4b22b9337f359bfd063322244f5336cc7c6ffcfars/* -*- Mode: C; tab-width: 4 -*-
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome * Copyright (c) 2003-2015 Apple Inc. All rights reserved.
4b22b9337f359bfd063322244f5336cc7c6ffcfars * Licensed under the Apache License, Version 2.0 (the "License");
4b22b9337f359bfd063322244f5336cc7c6ffcfars * you may not use this file except in compliance with the License.
4b22b9337f359bfd063322244f5336cc7c6ffcfars * You may obtain a copy of the License at
4b22b9337f359bfd063322244f5336cc7c6ffcfars * Unless required by applicable law or agreed to in writing, software
4b22b9337f359bfd063322244f5336cc7c6ffcfars * distributed under the License is distributed on an "AS IS" BASIS,
4b22b9337f359bfd063322244f5336cc7c6ffcfars * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
4b22b9337f359bfd063322244f5336cc7c6ffcfars * See the License for the specific language governing permissions and
4b22b9337f359bfd063322244f5336cc7c6ffcfars * limitations under the License.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Normally we append search domains only for queries with a single label that are not
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// fully qualified. This can be overridden to apply search domains for queries (that are
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// not fully qualified) with any number of labels e.g., moon, moon.cs, moon.cs.be, etc.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Apple-specific functionality, not required for other platforms
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#include <sys/proc_info.h> // for struct proc_bsdshortinfo
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif //LOCAL_PEERPID
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome//upto 16 characters of process name (defined in <sys/proc.h> but we do not want to include that file)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomeint WCFIsServerRunning(WCFConnection *conn) __attribute__((weak_import));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomeint WCFNameResolvesToAddr(WCFConnection *conn, char* domainName, struct sockaddr* address, uid_t userid) __attribute__((weak_import));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomeint WCFNameResolvesToName(WCFConnection *conn, char* fromName, char* toName, uid_t userid) __attribute__((weak_import));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Do we really need to define a macro for "if"?
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // ! NO_WCF
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// User IDs 0-500 are system-wide processes, not actual users in the usual sense
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// User IDs for real user accounts start at 501 and count up from there
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soometypedef void (*req_termination_fn)(request_state *request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AuthRecord *rr; // Pointer to variable-sized AuthRecord (Why a pointer? Why not just embed it here?)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// A single registered service: ServiceRecordSet + bookkeeping
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Note that we duplicate some fields from parent service_info object
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// to facilitate cleanup, when instances and parent may be deallocated at different times.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSBool renameonmemfree; // Set on config change when we deregister original name
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSBool clientnotified; // Has client been notified of successful registration yet?
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSBool default_local; // is this the "local." from an empty-string registration?
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSBool external_advertise; // is this is being advertised externally?
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ServiceRecordSet srs; // note -- variable-sized object -- must be last field in struct
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// for multi-domain default browsing
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request_state *primary; // If this operation is on a shared socket, pointer to primary
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // request_state for the original DNSServiceCreateConnection() operation
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char pid_name[MAXCOMLEN]; // Client's process name
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: On a shared connection these fields in the primary structure, including hdr, are re-used
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // for each new request. This is because, until we've read the ipc_msg_hdr to find out what the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // operation is, we don't know if we're going to need to allocate a new request_state or not.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 hdr_bytes; // bytes of header already read
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 data_bytes; // bytes of message data already read
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char *msgbuf; // pointer to data storage to pass to free()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const char *msgptr; // pointer to data to be read from (may be modified)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char *msgend; // pointer to byte after last byte of message
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // reply, termination, error, and client context info
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int no_reply; // don't send asynchronous replies to client
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSs32 time_blocked; // record time of a blocked client
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome struct reply_state *replies; // corresponding (active) reply list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome registered_record_entry *reg_recs; // list of registrations for a connection-oriented request
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSBool autoname; // Set if this name is tied to the Computer Name
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSBool autorename; // Set if this client wants us to automatically rename on conflict
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSBool allowremotequery; // Respond to unicast queries from outside the local link?
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSIPPort ReqExt; // External port we originally requested, for logging purposes
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// struct physically sits between ipc message header and call-specific fields in the message buffer
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soometypedef struct
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags; // Note: This field is in NETWORK byte order
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 ifi; // Note: This field is in NETWORK byte order
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceErrorType error; // Note: This field is in NETWORK byte order
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome struct reply_state *next; // If there are multiple unsent replies
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport const char ProgramName[] = "mDNSResponder";
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomestatic dnssd_sock_t listenfd = dnssd_InvalidSocket;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif //LOCAL_PEERPID
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void set_peer_pid(request_state *request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void LogMcastClientInfo(request_state *req);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void GetMcastClients(request_state *req);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomestatic mDNSu32 mcount; // tracks the current active mcast operations for McastLogging
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomestatic mDNSu32 i_mcount; // sets mcount when McastLogging is enabled(PROF signal is sent)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomestatic mDNSu32 n_mrecords; // tracks the current active mcast records for McastLogging
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomestatic mDNSu32 n_mquests; // tracks the current active mcast questions for McastLogging
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Note asymmetry here between registration and browsing.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// For service registrations we only automatically register in domains that explicitly appear in local configuration data
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// (so AutoRegistrationDomains could equally well be called SCPrefRegDomains)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// For service browsing we also learn automatic browsing domains from the network, so for that case we have:
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// 1. SCPrefBrowseDomains (local configuration data)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// 2. LocalDomainEnumRecords (locally-generated local-only PTR records -- equivalent to slElem->AuthRecs in uDNS.c)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// 3. AutoBrowseDomains, which is populated by tracking add/rmv events in AutomaticBrowseDomainChange, the callback function for our mDNS_GetDomains call.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// By creating and removing our own LocalDomainEnumRecords, we trigger AutomaticBrowseDomainChange callbacks just like domains learned from the network would.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport DNameListElem *AutoRegistrationDomains; // Domains where we automatically register for empty-string registrations
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomestatic DNameListElem *SCPrefBrowseDomains; // List of automatic browsing domains read from SCPreferences for "empty string" browsing
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soomestatic ARListElem *LocalDomainEnumRecords; // List of locally-generated PTR records to augment those we learn from the network
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport DNameListElem *AutoBrowseDomains; // List created from those local-only PTR records plus records we get from the network
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#define MSG_PAD_BYTES 5 // pad message buffer (read from client) with n zero'd bytes to guarantee
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // n get_string() calls w/o buffer overrun
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// initialization, setup/teardown functions
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// If a platform specifies its own PID file name, we use that
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal char *AnonDataToString(const mDNSu8 *ad, int adlen, char *adstr, int adstrlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%s: %s", errmsg, dnssd_strerror(dnssd_errno));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// hack to search-replace perror's to LogMsg's
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%s: %d (%s)", errmsg, dnssd_errno, dnssd_strerror(dnssd_errno));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Throttled version of my_perror: Logs once every 250 msgs
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void my_throttled_perror(char *err_msg)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// LogMcastQuestion/LogMcastQ should be called after the DNSQuestion struct is initialized(especially for q->TargetQID)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Hence all calls are made after mDNS_StartQuery()/mDNS_StopQuery()/mDNS_StopBrowse() is called.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void LogMcastQuestion(mDNS *const m, const DNSQuestion *const q, request_state *req, q_state status)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNSOpaque16IsZero(q->TargetQID)) // Check for Mcast Query
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcast("%s: %##s (%s) (%s) Client(%d)[%s]", status ? "+Question" : "-Question", q->qname.c, DNSTypeName(q->qtype),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->InterfaceID == mDNSInterface_LocalOnly ? "lo" : q->InterfaceID == mDNSInterface_P2P ? "p2p" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->InterfaceID == mDNSInterface_Any ? "any" : InterfaceNameForID(m, q->InterfaceID),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastStateInfo(m, mflag, mDNSfalse, mDNSfalse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// LogMcastService/LogMcastS should be called after the AuthRecord struct is initialized
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Hence all calls are made after mDNS_Register()/ just before mDNS_Deregister()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void LogMcastService(mDNS *const m, const AuthRecord *const ar, request_state *req, reg_state status)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!AuthRecord_uDNS(ar)) // Check for Mcast Service
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcast("%s: %##s (%s) (%s) Client(%d)[%s]", status ? "+Service" : "-Service", ar->resrec.name->c, DNSTypeName(ar->resrec.rrtype),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ar->resrec.InterfaceID == mDNSInterface_LocalOnly ? "lo" : ar->resrec.InterfaceID == mDNSInterface_P2P ? "p2p" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ar->resrec.InterfaceID == mDNSInterface_Any ? "all" : InterfaceNameForID(m, ar->resrec.InterfaceID),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastStateInfo(m, mflag, mDNSfalse, mDNSfalse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// For complete Mcast State Log, pass mDNStrue to mstatelog in LogMcastStateInfo()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport void LogMcastStateInfo(mDNS *const m, mDNSBool mflag, mDNSBool start, mDNSBool mstatelog)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->primary) // If this is a subbordinate operation, check that the parent is in the list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (r = all_requests; r && r != req; r=r->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For non-subbordinate operations, and subbordinate operations that have lost their parent, write out their info
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("--- MCAST RECORDS COUNT[%d] MCAST QUESTIONS COUNT[%d] ---", n_mrecords, n_mquests);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome n_mrecords = n_mquests = 0; // Reset the values
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // mcount is initialized to 0 when the PROF signal is sent since mcount could have
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // wrong value if MulticastLogging is disabled and then re-enabled
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("--- START MCAST STATE LOG ---");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->primary) // If this is a subbordinate operation, check that the parent is in the list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (r = all_requests; r && r != req; r=r->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("%3d: Orphan operation; parent not found in request list", req->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For non-subbordinate operations, and subbordinate operations that have lost their parent, write out their info
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("--- MCOUNT[%d]: IMPKTNUM[%d] ---", mcount, i_mpktnum);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("--- MCOUNT[%d]: CMPKTNUM[%d] - IMPKTNUM[%d] = [%d]PKTS ---", mcount, m->MPktNum, i_mpktnum, (m->MPktNum - i_mpktnum));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("--- END MCAST STATE LOG ---");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void abort_request(request_state *req)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("abort_request: ERROR: Attempt to abort operation %p with req->terminate %p", req, req->terminate); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // First stop whatever mDNSCore operation we were doing
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If this is actually a shared connection operation, then its req->terminate function will scan
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // the all_requests list and terminate any subbordinate operations sharing this file descriptor
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("abort_request: ERROR: Attempt to abort operation %p with invalid fd %d", req, req->sd); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Now, if this request_state is not subordinate to some other primary, close file descriptor and discard replies
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->errsd != req->sd) LogOperation("%3d: Removing FD and closing errsd %d", req->sd, req->errsd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else LogOperation("%3d: Removing FD", req->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome udsSupportRemoveFDFromEventLoop(req->sd, req->platform_data); // Note: This also closes file descriptor req->sd for us
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->errsd != req->sd) { dnssd_close(req->errsd); req->errsd = req->sd; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Set req->sd to something invalid, so that udsserver_idle knows to unlink and free this structure
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#if APPLE_OSX_mDNSResponder && MACOSX_MDNS_MALLOC_DEBUGGING
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Don't use dnssd_InvalidSocket (-1) because that's the sentinel value MACOSX_MDNS_MALLOC_DEBUGGING uses
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // for detecting when the memory for an object is inadvertently freed while the object is still on some list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We also set req->terminate to a bogus value so we know if abort_request() gets called again for this request
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void AbortUnlinkAndFree(request_state *req)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (*p) { *p = req->next; freeL("request_state/AbortUnlinkAndFree", req); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else LogMsg("AbortUnlinkAndFree: ERROR: Attempt to abort operation %p not in list", req);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal reply_state *create_reply(const reply_op_t op, const size_t datalen, request_state *const request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: create_reply - data length less than length of required fields");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome reply = mallocL("reply_state", sizeof(reply_state) + datalen - sizeof(reply_hdr));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome reply->totallen = (mDNSu32)datalen + sizeof(ipc_msg_hdr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome reply->mhdr->client_context = request->hdr.client_context;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Append a reply to the list in a request object
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// If our request is sharing a connection, then we append our reply_state onto the primary's list
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome// If the request does not want asynchronous replies, then the reply is freed instead of being appended to any list.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void append_reply(request_state *req, reply_state *rep)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Generates a response message giving name, type, domain, plus interface index,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// suitable for a browse result or service registration result.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// On successful completion rep is set to point to a malloc'd reply_state struct
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus GenerateNTDResponse(const domainname *const servicename, const mDNSInterfaceID id,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request_state *const request, reply_state **const rep, reply_op_t op, DNSServiceFlags flags, mStatus err)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!DeconstructServiceName(servicename, &name, &type, &dom))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConvertDomainLabelToCString_unescaped(&name, namestr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Calculate reply data length
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Build reply header
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (*rep)->rhdr->ifi = dnssd_htonl(mDNSPlatformInterfaceIndexfromInterfaceID(&mDNSStorage, id, mDNSfalse));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Build reply body
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Special support to enable the DNSServiceBrowse call made by Bonjour Browser
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Remove after Bonjour Browser is updated to use DNSServiceQueryRecord instead of DNSServiceBrowse
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void GenerateBonjourBrowserResponse(const domainname *const servicename, const mDNSInterfaceID id,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request_state *const request, reply_state **const rep, reply_op_t op, DNSServiceFlags flags, mStatus err)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 1. Put first label in namestr
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConvertDomainLabelToCString_unescaped((const domainlabel *)servicename, namestr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 2. Put second label and "local" into typestr
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_snprintf(typestr, sizeof(typestr), "%#s.local.", SecondLabel(servicename));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Calculate reply data length
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Build reply header
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (*rep)->rhdr->ifi = dnssd_htonl(mDNSPlatformInterfaceIndexfromInterfaceID(&mDNSStorage, id, mDNSfalse));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Build reply body
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Returns a resource record (allocated w/ malloc) containing the data found in an IPC message
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Data must be in the following format: flags, interfaceIndex, name, rrtype, rrclass, rdlen, rdata, (optional) ttl
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// (ttl only extracted/set if ttl argument is non-zero). Returns NULL for a bad-parameter error
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal AuthRecord *read_rr_from_ipc_msg(request_state *request, int GetTTL, int validate_flags)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 interfaceIndex = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int str_err = get_string(&request->msgptr, request->msgend, name, sizeof(name));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu16 type = get_uint16(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu16 class = get_uint16(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu16 rdlen = get_uint16(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const char *rdata = get_rdata (&request->msgptr, request->msgend, rdlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 ttl = GetTTL ? get_uint32(&request->msgptr, request->msgend) : 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int storage_size = rdlen > sizeof(RDataBody) ? rdlen : sizeof(RDataBody);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (str_err) { LogMsg("ERROR: read_rr_from_ipc_msg - get_string"); return NULL; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->msgptr) { LogMsg("Error reading Resource Record from client"); return NULL; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome !((flags & kDNSServiceFlagsShared) == kDNSServiceFlagsShared) &&
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome !((flags & kDNSServiceFlagsUnique) == kDNSServiceFlagsUnique))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: Bad resource record flags (must be kDNSServiceFlagsShared or kDNSServiceFlagsUnique)");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rr = mallocL("AuthRecord/read_rr_from_ipc_msg", sizeof(AuthRecord) - sizeof(RDataBody) + storage_size);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome InterfaceID = mDNSPlatformInterfaceIDfromInterfaceIndex(&mDNSStorage, interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if ((InterfaceID == mDNSInterface_Any) && (flags & kDNSServiceFlagsIncludeP2P)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if ((InterfaceID == mDNSInterface_Any) && (flags & kDNSServiceFlagsIncludeP2P))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if ((InterfaceID == mDNSInterface_Any) && (flags & kDNSServiceFlagsIncludeAWDL))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_SetupResourceRecord(rr, mDNSNULL, InterfaceID, type, 0,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (mDNSu8) ((flags & kDNSServiceFlagsShared) ? kDNSRecordTypeShared : kDNSRecordTypeUnique), artype, mDNSNULL, mDNSNULL);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&rr->namestorage, name))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (flags & kDNSServiceFlagsAllowRemoteQuery) rr->AllowRemoteQuery = mDNStrue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemCopy(rr->resrec.rdata->u.data, rdata, rdlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rr->resrec.namehash = DomainNameHashValue(rr->resrec.name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome SetNewRData(&rr->resrec, mDNSNULL, 0); // Sets rr->rdatahash for us
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal int build_domainname_from_strings(domainname *srv, char *name, char *regtype, char *domain)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainLabelFromLiteralString(&n, name)) return -1;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&t, regtype)) return -1;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&d, domain)) return -1;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!ConstructServiceName(srv, &n, &t, &d)) return -1;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void send_all(dnssd_sock_t s, const char *ptr, int len)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // On a freshly-created Unix Domain Socket, the kernel should *never* fail to buffer a small write for us
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // (four bytes for a typical error code return, 12 bytes for DNSServiceGetProperty(DaemonVersion)).
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If it does fail, we don't attempt to handle this failure, but we do log it so we know something is wrong.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: send_all(%d) wrote %d of %d errno %d (%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome s, n, len, dnssd_errno, dnssd_strerror(dnssd_errno));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mDNSBool AuthorizedDomain(const request_state * const request, const domainname * const d, const DNameListElem * const doms)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int bestDelta = -1; // the delta of the best match, lower is better
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((bestDelta == -1 || delta <= bestDelta) && SameDomainName(&delem->name, SkipLeadingLabels(d, delta)))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome allow = (allow || (delem->uid == request->uid));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mDNSBool callExternalHelpers(mDNSInterfaceID InterfaceID, const domainname *const domain, DNSServiceFlags flags)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ( ((InterfaceID == mDNSInterface_Any) && (flags & (kDNSServiceFlagsIncludeP2P | kDNSServiceFlagsIncludeAWDL)) && IsLocalDomain(domain))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void external_start_advertising_helper(service_instance *const instance)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNSIPPortIsZero(instance->request->u.servicereg.port))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("external_start_advertising_helper: Not registering service with port number zero");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (instance->external_advertise) LogMsg("external_start_advertising_helper: external_advertise already set!");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for ( i = 0; i < instance->request->u.servicereg.num_subtypes; i++)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_advertising_service(&st[i].resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_advertising_service(&instance->srs.RR_PTR.resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_advertising_service(&instance->srs.RR_SRV.resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_advertising_service(&instance->srs.RR_TXT.resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_advertising_service(&e->r.resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void external_stop_advertising_helper(service_instance *const instance)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("external_stop_advertising_helper: calling external_stop_advertising_service");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for ( i = 0; i < instance->request->u.servicereg.num_subtypes; i++)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_advertising_service(&st[i].resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_advertising_service(&instance->srs.RR_PTR.resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_advertising_service(&instance->srs.RR_SRV.resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_advertising_service(&instance->srs.RR_TXT.resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_advertising_service(&e->r.resrec, instance->request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport void FreeExtraRR(mDNS *const m, AuthRecord *const rr, mStatus result)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ExtraResourceRecord *extra = (ExtraResourceRecord *)rr->RecordContext;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)m; // Unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (result != mStatus_MemFree) { LogMsg("Error: FreeExtraRR invoked with unexpected error %d", result); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo(" FreeExtraRR %s", RRDisplayString(m, &rr->resrec));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("ExtraResourceRecord/FreeExtraRR", extra);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void unlink_and_free_service_instance(service_instance *srv)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ExtraResourceRecord *e = srv->srs.Extras, *tmp;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // clear pointers from parent struct
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome service_instance **p = &srv->request->u.servicereg.instances;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome FreeExtraRR(&mDNSStorage, &tmp->r, mStatus_MemFree);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (srv->srs.RR_TXT.resrec.rdata != &srv->srs.RR_TXT.rdatastorage)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("TXT RData", srv->srs.RR_TXT.resrec.rdata);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Count how many other service records we have locally with the same name, but different rdata.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// For auto-named services, we can have at most one per machine -- if we allowed two auto-named services of
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// the same type on the same machine, we'd get into an infinite autoimmune-response loop of continuous renaming.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport int CountPeerRegistrations(mDNS *const m, ServiceRecordSet *const srs)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (rr->resrec.rrtype == kDNSType_SRV && SameDomainName(rr->resrec.name, r->name) && !IdenticalSameNameRecord(&rr->resrec, r))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome verbosedebugf("%d peer registrations for %##s", count, r->name->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport int CountExistingRegistrations(domainname *srv, mDNSIPPort port)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (rr = mDNSStorage.ResourceRecords; rr; rr=rr->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSSameIPPort(rr->resrec.rdata->u.srv.port, port) &&
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void SendServiceRemovalNotification(ServiceRecordSet *const srs)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome service_instance *instance = srs->ServiceContext;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (GenerateNTDResponse(srs->RR_SRV.resrec.name, srs->RR_SRV.resrec.InterfaceID, instance->request, &rep, reg_service_reply_op, 0, mStatus_NoError) != mStatus_NoError)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: SendServiceRemovalNotification: %##s is not valid DNS-SD SRV name", instance->request->sd, srs->RR_SRV.resrec.name->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else { append_reply(instance->request, rep); instance->clientnotified = mDNSfalse; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// service registration callback performs three duties - frees memory for deregistered services,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// handles name conflicts, and delivers completed registration information to the client
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void regservice_callback(mDNS *const m, ServiceRecordSet *const srs, mStatus result)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)m; // Unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!srs) { LogMsg("regservice_callback: srs is NULL %d", result); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!instance) { LogMsg("regservice_callback: srs->ServiceContext is NULL %d", result); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // don't send errors up to client for wide-area, empty-string registrations
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome instance->request->u.servicereg.default_domain &&
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (result == mStatus_NoError) ? "%s DNSServiceRegister(%##s, %u) REGISTERED" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (result == mStatus_MemFree) ? "%s DNSServiceRegister(%##s, %u) DEREGISTERED" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (result == mStatus_NameConflict) ? "%s DNSServiceRegister(%##s, %u) NAME CONFLICT" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome "%s DNSServiceRegister(%##s, %u) %s %d";
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (instance->request) mDNS_snprintf(prefix, sizeof(prefix), "%3d:", instance->request->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation(fmt, prefix, srs->RR_SRV.resrec.name->c, mDNSVal16(srs->RR_SRV.resrec.rdata->u.srv.port),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome SuppressError ? "suppressed error" : "CALLBACK", result);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!instance->request && result != mStatus_MemFree) { LogMsg("regservice_callback: instance->request is NULL %d", result); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (instance->request->u.servicereg.allowremotequery)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (e = instance->srs.Extras; e; e = e->next) e->r.AllowRemoteQuery = mDNStrue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (GenerateNTDResponse(srs->RR_SRV.resrec.name, srs->RR_SRV.resrec.InterfaceID, instance->request, &rep, reg_service_reply_op, kDNSServiceFlagsAdd, result) != mStatus_NoError)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: regservice_callback: %##s is not valid DNS-SD SRV name", instance->request->sd, srs->RR_SRV.resrec.name->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else { append_reply(instance->request, rep); instance->clientnotified = mDNStrue; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (callExternalHelpers(instance->request->u.servicereg.InterfaceID, &instance->domain, instance->request->flags))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("regservice_callback: calling external_start_advertising_helper()");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (instance->request->u.servicereg.autoname && CountPeerRegistrations(m, srs) == 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome RecordUpdatedNiceLabel(m, 0); // Successfully got new name, tell user immediately
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (instance->request && instance->renameonmemfree)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_RenameAndReregisterService(m, srs, &instance->request->u.servicereg.name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (err) LogMsg("ERROR: regservice_callback - RenameAndReregisterService returned %d", err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // error should never happen - safest to log and continue
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (instance->request->u.servicereg.autorename)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (instance->request->u.servicereg.autoname && CountPeerRegistrations(m, srs) == 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // On conflict for an autoname service, rename and reregister *all* autoname services
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_ConfigChanged(m); // Will call back into udsserver_handle_configchange()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else // On conflict for a non-autoname service, rename and reregister just that one service
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (instance->clientnotified) SendServiceRemovalNotification(srs);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_RenameAndReregisterService(m, srs, mDNSNULL);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (GenerateNTDResponse(srs->RR_SRV.resrec.name, srs->RR_SRV.resrec.InterfaceID, instance->request, &rep, reg_service_reply_op, kDNSServiceFlagsAdd, result) != mStatus_NoError)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: regservice_callback: %##s is not valid DNS-SD SRV name", instance->request->sd, srs->RR_SRV.resrec.name->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else { append_reply(instance->request, rep); instance->clientnotified = mDNStrue; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else // Not mStatus_NoError, mStatus_MemFree, or mStatus_NameConflict
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (GenerateNTDResponse(srs->RR_SRV.resrec.name, srs->RR_SRV.resrec.InterfaceID, instance->request, &rep, reg_service_reply_op, kDNSServiceFlagsAdd, result) != mStatus_NoError)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: regservice_callback: %##s is not valid DNS-SD SRV name", instance->request->sd, srs->RR_SRV.resrec.name->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else { append_reply(instance->request, rep); instance->clientnotified = mDNStrue; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void regrecord_callback(mDNS *const m, AuthRecord *rr, mStatus result)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)m; // Unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!rr->RecordContext) // parent struct already freed by termination callback
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("Error: regrecord_callback: successful registration of orphaned record %s", ARDisplayString(m, rr));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (result != mStatus_MemFree) LogMsg("regrecord_callback: error %d received after parent termination", result);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We come here when the record is being deregistered either from DNSServiceRemoveRecord or connection_termination.
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // If the record has been updated, we need to free the rdata. Every time we call mDNS_Update, it calls update_callback
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // with the old rdata (so that we can free it) and stores the new rdata in "rr->resrec.rdata". This means, we need
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to free the latest rdata for which the update_callback was never called with.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (rr->resrec.rdata != &rr->rdatastorage) freeL("RData/regrecord_callback", rr->resrec.rdata);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome registered_record_entry *re = rr->RecordContext;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char *fmt = (result == mStatus_NoError) ? "%3d: DNSServiceRegisterRecord(%u %s) REGISTERED" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (result == mStatus_MemFree) ? "%3d: DNSServiceRegisterRecord(%u %s) DEREGISTERED" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (result == mStatus_NameConflict) ? "%3d: DNSServiceRegisterRecord(%u %s) NAME CONFLICT" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome "%3d: DNSServiceRegisterRecord(%u %s) %d";
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation(fmt, request->sd, re->key, RRDisplayString(m, &rr->resrec), result);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int len = sizeof(DNSServiceFlags) + sizeof(mDNSu32) + sizeof(DNSServiceErrorType);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome reply_state *reply = create_reply(reg_record_reply_op, len, request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome reply->mhdr->client_context = re->regrec_client_context;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome reply->rhdr->ifi = dnssd_htonl(mDNSPlatformInterfaceIndexfromInterfaceID(m, rr->resrec.InterfaceID, mDNSfalse));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If this is a callback to a keepalive record, do not free it.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("regrecord_callback: Callback with error code mStatus_BadStateErr - not freeing the record.");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // unlink from list, free memory
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome registered_record_entry **ptr = &request->u.reg_recs;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (*ptr && (*ptr) != re) ptr = &(*ptr)->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!*ptr) { LogMsg("regrecord_callback - record not in list!"); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("registered_record_entry AuthRecord regrecord_callback", re->rr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("registered_record_entry regrecord_callback", re);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (re->external_advertise) LogMsg("regrecord_callback: external_advertise already set!");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (callExternalHelpers(re->origInterfaceID, &rr->namestorage, request->flags))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("regrecord_callback: calling external_start_advertising_service");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_advertising_service(&rr->resrec, request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// set_peer_pid() is called after mem is allocated for each new request in NewRequest()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// This accounts for 2 places (connect_callback, request_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void set_peer_pid(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to extract the pid value
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (getsockopt(request->sd, SOL_LOCAL, LOCAL_PEERPID, &p, &len) != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to extract the process name from the pid value
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (proc_pidinfo(p, PROC_PIDT_SHORTBSDINFO, 1, &proc, PROC_PIDT_SHORTBSDINFO_SIZE) == 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformStrCopy(request->pid_name, proc.pbsi_comm);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome debugf("set_peer_pid: Client PEERPID is %d %s", p, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#else // !LOCAL_PEERPID
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogInfo("set_peer_pid: Not Supported on this version of OS");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // LOCAL_PEERPID
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void connection_termination(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // When terminating a shared connection, we need to scan the all_requests list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // and terminate any subbordinate operations sharing this file descriptor
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceCreateConnection STOP PID[%d](%s)", request->sd, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Since we're already doing a list traversal, we unlink the request directly instead of using AbortUnlinkAndFree()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (tmp->primary == tmp) LogMsg("connection_termination ERROR (*req)->primary == *req for %p %d", tmp, tmp->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (tmp->replies) LogMsg("connection_termination ERROR How can subordinate req %p %d have replies queued?", tmp, tmp->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("request_state/connection_termination", tmp);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome registered_record_entry *ptr = request->u.reg_recs;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceRegisterRecord(%u %s) STOP PID[%d](%s)", request->sd, ptr->key, RRDisplayString(&mDNSStorage, &ptr->rr->resrec), request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.reg_recs = request->u.reg_recs->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_advertising_service(&ptr->rr->resrec, request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastS(&mDNSStorage, ptr->rr, request, reg_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_Deregister(&mDNSStorage, ptr->rr); // Will free ptr->rr for us
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("registered_record_entry/connection_termination", ptr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void handle_cancel_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: Cancel %08X %08X", request->sd, request->hdr.client_context.u32[1], request->hdr.client_context.u32[0]);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (*req)->hdr.client_context.u32[0] == request->hdr.client_context.u32[0] &&
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (*req)->hdr.client_context.u32[1] == request->hdr.client_context.u32[1])
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Since we're already doing a list traversal, we unlink the request directly instead of using AbortUnlinkAndFree()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("request_state/handle_cancel_request", tmp);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_regrecord_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AuthRecord *rr = read_rr_from_ipc_msg(request, 1, 1);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Don't allow non-local domains to be regsitered as LocalOnly. Allowing this would permit
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // clients to register records such as www.bigbank.com A w.x.y.z to redirect Safari.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (rr->resrec.InterfaceID == mDNSInterface_LocalOnly && !IsLocalDomain(rr->resrec.name) &&
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rr->resrec.rrclass == kDNSClass_IN && (rr->resrec.rrtype == kDNSType_A || rr->resrec.rrtype == kDNSType_AAAA ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("AuthRecord/handle_regrecord_request", rr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // allocate registration entry, link into list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome re = mallocL("registered_record_entry", sizeof(registered_record_entry));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome re->regrec_client_context = request->hdr.client_context;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (rr->resrec.InterfaceID == mDNSInterface_P2P)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!AuthorizedDomain(request, rr->resrec.name, AutoRegistrationDomains)) return (mStatus_NoError);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rr->resrec.rroriginalttl = DefaultTTLforRRType(rr->resrec.rrtype);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceRegisterRecord(%u %s) START PID[%d](%s)", request->sd, re->key, RRDisplayString(&mDNSStorage, &rr->resrec),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceRegisterRecord(%u %s) ERROR (%d)", request->sd, re->key, RRDisplayString(&mDNSStorage, &rr->resrec), err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("registered_record_entry/AuthRecord", rr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastS(&mDNSStorage, rr, request, reg_start);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void UpdateDeviceInfoRecord(mDNS *const m);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void regservice_termination_callback(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("regservice_termination_callback context is NULL");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome service_instance *p = request->u.servicereg.instances;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.instances = request->u.servicereg.instances->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // only safe to free memory if registration is not valid, i.e. deregister fails (which invalidates p)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceRegister(%##s, %u) STOP PID[%d](%s)", request->sd, p->srs.RR_SRV.resrec.name->c,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSVal16(p->srs.RR_SRV.resrec.rdata->u.srv.port), request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Clear backpointer *before* calling mDNS_DeregisterService/unlink_and_free_service_instance
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We don't need unlink_and_free_service_instance to cut its element from the list, because we're already advancing
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // request->u.servicereg.instances as we work our way through the list, implicitly cutting one element at a time
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We can't clear p->request *after* the calling mDNS_DeregisterService/unlink_and_free_service_instance
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // because by then we might have already freed p
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastS(&mDNSStorage, &p->srs.RR_SRV, request, reg_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNS_DeregisterService(&mDNSStorage, &p->srs))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Don't touch service_instance *p after this -- it's likely to have been freed already
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("service_info txtdata", request->u.servicereg.txtdata);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Clear autoname before calling UpdateDeviceInfoRecord() so it doesn't mistakenly include this in its count of active autoname registrations
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal request_state *LocateSubordinateRequest(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->hdr.client_context.u32[0] == request->hdr.client_context.u32[0] &&
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->hdr.client_context.u32[1] == request->hdr.client_context.u32[1]) return(req);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus add_record_to_service(request_state *request, service_instance *instance, mDNSu16 rrtype, mDNSu16 rdlen, const char *rdata, mDNSu32 ttl)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 coreFlags = 0; // translate to corresponding mDNSCore flag definitions
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int size = rdlen > sizeof(RDataBody) ? rdlen : sizeof(RDataBody);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ExtraResourceRecord *extra = mallocL("ExtraResourceRecord", sizeof(*extra) - sizeof(RDataBody) + size);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!extra) { my_perror("ERROR: malloc"); return mStatus_NoMemoryErr; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemZero(extra, sizeof(ExtraResourceRecord)); // OK if oversized rdata not zero'd
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome extra->r.rdatastorage.MaxRDLength = (mDNSu16) size;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemCopy(&extra->r.rdatastorage.u.data, rdata, rdlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // use InterfaceID value from DNSServiceRegister() call that created the original service
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome extra->r.resrec.InterfaceID = request->u.servicereg.InterfaceID;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->flags & kDNSServiceFlagsIncludeP2P)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->flags & kDNSServiceFlagsIncludeAWDL)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome result = mDNS_AddRecordToService(&mDNSStorage, srs, extra, &extra->r.rdatastorage, ttl, coreFlags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("ExtraResourceRecord/add_record_to_service", extra);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastS(&mDNSStorage, &srs->RR_PTR, request, reg_start);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome && callExternalHelpers(request->u.servicereg.InterfaceID, &instance->domain, request->flags))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("add_record_to_service: calling external_start_advertising_service");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_advertising_service(&extra->r.resrec, request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_add_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags (&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu16 rrtype = get_uint16(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu16 rdlen = get_uint16(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const char *rdata = get_rdata (&request->msgptr, request->msgend, rdlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 ttl = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->msgptr) { LogMsg("%3d: DNSServiceAddRecord(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If this is a shared connection, check if the operation actually applies to a subordinate request_state object
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate == connection_termination) request = LocateSubordinateRequest(request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate != regservice_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: DNSServiceAddRecord(not a registered service ref)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For a service registered with zero port, don't allow adding records. This mostly happens due to a bug
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // in the application. See radar://9165807.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNSIPPortIsZero(request->u.servicereg.port))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: DNSServiceAddRecord: adding record to a service registered with zero port", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceAddRecord(%X, %##s, %s, %d)", request->sd, flags,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (request->u.servicereg.instances) ? request->u.servicereg.instances->srs.RR_SRV.resrec.name->c : NULL, DNSTypeName(rrtype), rdlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (i = request->u.servicereg.instances; i; i = i->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome result = add_record_to_service(request, i, rrtype, rdlen, rdata, ttl);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else result = mStatus_NoError; // suppress non-local default errors
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void update_callback(mDNS *const m, AuthRecord *const rr, RData *oldrd, mDNSu16 oldrdlen)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSBool external_advertise = (rr->UpdateContext) ? *((mDNSBool *)rr->UpdateContext) : mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)m; // Unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // There are three cases.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 1. We have updated the primary TXT record of the service
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 2. We have updated the TXT record that was added to the service using DNSServiceAddRecord
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 3. We have updated the TXT record that was registered using DNSServiceRegisterRecord
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // external_advertise is set if we have advertised at least once during the initial addition
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // of the record in all of the three cases above. We should have checked for InterfaceID/LocalDomain
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // checks during the first time and hence we don't do any checks here
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Since we don't have a copy of the flags value used when the record was registered,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // we'll have to derive it from the ARType field.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (rr->ARType == AuthRecordAnyIncludeAWDL)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (ext.rdlength == oldrdlen && mDNSPlatformMemSame(&ext.rdata->u, &oldrd->u, oldrdlen)) goto exit;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_advertising_service(&ext, flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("update_callback: calling external_start_advertising_service");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_advertising_service(&rr->resrec, flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (oldrd != &rr->rdatastorage) freeL("RData/update_callback", oldrd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus update_record(AuthRecord *rr, mDNSu16 rdlen, const char *rdata, mDNSu32 ttl, const mDNSBool *const external_advertise)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const int rdsize = rdlen > sizeof(RDataBody) ? rdlen : sizeof(RDataBody);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome RData *newrd = mallocL("RData/update_record", sizeof(RData) - sizeof(RDataBody) + rdsize);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // BIND named (name daemon) doesn't allow TXT records with zero-length rdata. This is strictly speaking correct,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // since RFC 1035 specifies a TXT record as "One or more <character-string>s", not "Zero or more <character-string>s".
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Since some legacy apps try to create zero-length TXT records, we'll silently correct it here.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (rr->resrec.rrtype == kDNSType_TXT && rdlen == 0) { rdlen = 1; newrd->u.txt.c[0] = 0; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (external_advertise) rr->UpdateContext = (void *)external_advertise;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome result = mDNS_Update(&mDNSStorage, rr, ttl, rdlen, newrd, update_callback);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (result) { LogMsg("update_record: Error %d for %s", (int)result, ARDisplayString(&mDNSStorage, rr)); freeL("RData/update_record", newrd); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_update_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // get the message data
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags (&request->msgptr, request->msgend); // flags unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu16 rdlen = get_uint16(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const char *rdata = get_rdata (&request->msgptr, request->msgend, rdlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 ttl = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->msgptr) { LogMsg("%3d: DNSServiceUpdateRecord(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If this is a shared connection, check if the operation actually applies to a subordinate request_state object
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate == connection_termination) request = LocateSubordinateRequest(request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate == connection_termination)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // update an individually registered record
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (reptr = request->u.reg_recs; reptr; reptr = reptr->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome result = update_record(reptr->rr, rdlen, rdata, ttl, &reptr->external_advertise);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceUpdateRecord(%##s, %s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->sd, reptr->rr->resrec.name->c, reptr->rr ? DNSTypeName(reptr->rr->resrec.rrtype) : "<NONE>");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate != regservice_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: DNSServiceUpdateRecord(not a registered service ref)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For a service registered with zero port, only SRV record is initialized. Don't allow any updates.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNSIPPortIsZero(request->u.servicereg.port))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: DNSServiceUpdateRecord: updating the record of a service registered with zero port", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // update the saved off TXT data for the service
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { freeL("service_info txtdata", request->u.servicereg.txtdata); request->u.servicereg.txtdata = NULL; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.txtdata = mallocL("service_info txtdata", rdlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->u.servicereg.txtdata) FatalError("ERROR: handle_update_request - malloc");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemCopy(request->u.servicereg.txtdata, rdata, rdlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // update a record from a service record set
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (i = request->u.servicereg.instances; i; i = i->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (hdr->reg_index == TXT_RECORD_INDEX) rr = &i->srs.RR_TXT;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (e->ClientID == hdr->reg_index) { rr = &e->r; break; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!rr) { result = mStatus_BadReferenceErr; goto end; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome result = update_record(rr, rdlen, rdata, ttl, &i->external_advertise);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else result = mStatus_NoError; // suppress non-local default errors
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate == regservice_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceUpdateRecord(%##s, %s)", request->sd,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (request->u.servicereg.instances) ? request->u.servicereg.instances->srs.RR_SRV.resrec.name->c : NULL,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rr ? DNSTypeName(rr->resrec.rrtype) : "<NONE>");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// remove a resource record registered via DNSServiceRegisterRecord()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus remove_record(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome registered_record_entry *e, **ptr = &request->u.reg_recs;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (*ptr && (*ptr)->key != request->hdr.reg_index) ptr = &(*ptr)->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!*ptr) { LogMsg("%3d: DNSServiceRemoveRecord(%u) not found", request->sd, request->hdr.reg_index); return mStatus_BadReferenceErr; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceRemoveRecord(%u %s)", request->sd, e->key, RRDisplayString(&mDNSStorage, &e->rr->resrec));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_advertising_service(&e->rr->resrec, request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastS(&mDNSStorage, e->rr, request, reg_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_Deregister(&mDNSStorage, e->rr); // Will free e->rr for us; we're responsible for freeing e
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: remove_record, mDNS_Deregister: %d", err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("registered_record_entry AuthRecord remove_record", e->rr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("registered_record_entry remove_record", e);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus remove_extra(const request_state *const request, service_instance *const serv, mDNSu16 *const rrtype)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ptr = serv->srs.Extras; ptr; ptr = ptr->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (ptr->ClientID == request->hdr.reg_index) // found match
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (serv->external_advertise) external_stop_advertising_service(&ptr->r.resrec, request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_RemoveRecordFromService(&mDNSStorage, &serv->srs, ptr, FreeExtraRR, ptr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_removerecord_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_flags(&request->msgptr, request->msgend); // flags unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->msgptr) { LogMsg("%3d: DNSServiceRemoveRecord(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If this is a shared connection, check if the operation actually applies to a subordinate request_state object
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate == connection_termination) request = LocateSubordinateRequest(request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate == connection_termination)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = remove_record(request); // remove individually registered record
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (request->terminate != regservice_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: DNSServiceRemoveRecord(not a registered service ref)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceRemoveRecord(%##s, %s)", request->sd,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (request->u.servicereg.instances) ? request->u.servicereg.instances->srs.RR_SRV.resrec.name->c : NULL,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (i = request->u.servicereg.instances; i; i = i->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else err = mStatus_NoError; // suppress non-local default errors
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// If there's a comma followed by another character,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// FindFirstSubType overwrites the comma with a nul and returns the pointer to the next character.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Otherwise, it returns a pointer to the final nul at the end of the string
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal char *FindFirstSubType(char *p, char **AnonData)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// If there's a comma followed by another character,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// FindNextSubType overwrites the comma with a nul and returns the pointer to the next character.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// If it finds an illegal unescaped dot in the subtype name, it returns mDNSNULL
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Otherwise, it returns a pointer to the final nul at the end of the string
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (p[0] == '\\' && p[1]) // If escape character
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (p[1]) *p++ = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (p[0] == '.')
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Returns -1 if illegal subtype found
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport mDNSs32 ChopSubTypes(char *regtype, char **AnonData)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char *stp = FindFirstSubType(regtype, AnonData);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport AuthRecord *AllocateSubTypes(mDNSs32 NumSubTypes, char *p, char **AnonData)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // "p" is pointing at the regtype e.g., _http._tcp followed by ":<AnonData>" indicated
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // by AnonData being non-NULL which is in turn follwed by ",<SubTypes>" indicated by
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // NumSubTypes being non-zero. We need to skip the initial regtype to get to the actual
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // data that we want. When we come here, ChopSubTypes has null terminated like this e.g.,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // _http._tcp<NULL><AnonData><NULL><SubType1><NULL><SubType2><NULL> etc.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 1. If we have Anonymous data and subtypes, skip the regtype (e.g., "_http._tcp")
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to get the AnonData and then skip the AnonData to get to the SubType.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 2. If we have only SubTypes, skip the regtype to get to the SubType data.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 3. If we have only AnonData, skip the regtype to get to the AnonData.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 4. If we don't have AnonData or NumStypes, it is a noop.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Skip the regtype
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (*p) p++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome st = mallocL("ServiceSubTypes", NumSubTypes * sizeof(AuthRecord));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (i = 0; i < NumSubTypes; i++)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_SetupResourceRecord(&st[i], mDNSNULL, mDNSInterface_Any, kDNSQType_ANY, kStandardTTL, 0, AuthRecordAny, mDNSNULL, mDNSNULL);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // First time through we skip the regtype or AnonData. Subsequently, the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // previous subtype.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (*p) p++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&st[i].namestorage, p))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If NumSubTypes is zero and AnonData is non-NULL, we still return NULL but AnonData has been
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // initialized. The caller knows how to handle this.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus register_service_instance(request_state *request, const domainname *domain)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const int extra_size = (request->u.servicereg.txtlen > sizeof(RDataBody)) ? (request->u.servicereg.txtlen - sizeof(RDataBody)) : 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const mDNSBool DomainIsLocal = SameDomainName(domain, &localdomain);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSInterfaceID interfaceID = request->u.servicereg.InterfaceID;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->flags & kDNSServiceFlagsIncludeP2P)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->flags & kDNSServiceFlagsIncludeAWDL)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Client guarantees that record names are unique, so we can skip sending out initial
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // probe messages. Standard name conflict resolution is still done if a conflict is discovered.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->flags & kDNSServiceFlagsKnownUnique)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->flags & kDNSServiceFlagsWakeOnlyService)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the client specified an interface, but no domain, then we honor the specified interface for the "local" (mDNS)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // registration but for the wide-area registrations we don't (currently) have any concept of a wide-area unicast
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // registrations scoped to a specific interface, so for the automatic domains we add we must *not* specify an interface.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // (Specifying an interface with an apparently wide-area domain (i.e. something other than "local")
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // currently forces the registration to use mDNS multicast despite the apparently wide-area domain.)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.servicereg.default_domain && !DomainIsLocal) interfaceID = mDNSInterface_Any;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ptr = &request->u.servicereg.instances; *ptr; ptr = &(*ptr)->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("register_service_instance: domain %##s already registered for %#s.%##s",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome domain->c, &request->u.servicereg.name, &request->u.servicereg.type);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome instance = mallocL("service_instance", sizeof(*instance) + extra_size);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!instance) { my_perror("ERROR: malloc"); return mStatus_NoMemoryErr; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome instance->default_local = (request->u.servicereg.default_domain && DomainIsLocal);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome instance->subtypes = AllocateSubTypes(request->u.servicereg.num_subtypes, request->u.servicereg.type_as_string, mDNSNULL);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome instance->subtypes = AllocateSubTypes(request->u.servicereg.num_subtypes, request->u.servicereg.type_as_string, &AnonData);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome instance->srs.AnonData = (const mDNSu8 *)AnonData;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.servicereg.num_subtypes && !instance->subtypes)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome result = mDNS_RegisterService(&mDNSStorage, &instance->srs,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome &request->u.servicereg.name, &request->u.servicereg.type, domain,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.host.c[0] ? &request->u.servicereg.host : NULL,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.txtdata, request->u.servicereg.txtlen,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome instance->subtypes, request->u.servicereg.num_subtypes,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome interfaceID, regservice_callback, instance, coreFlags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *ptr = instance; // Append this to the end of our request->u.servicereg.instances list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceRegister(%##s, %u) ADDED", instance->request->sd,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome instance->srs.RR_SRV.resrec.name->c, mDNSVal16(request->u.servicereg.port));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastS(&mDNSStorage, &instance->srs.RR_SRV, request, reg_start);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("register_service_instance %#s.%##s%##s error %d",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome &request->u.servicereg.name, &request->u.servicereg.type, domain->c, result);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void udsserver_default_reg_domain_changed(const DNameListElem *const d, const mDNSBool add)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome machserver_automatic_registration_domain_changed(&d->name, add);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%s registration domain %##s", add ? "Adding" : "Removing", d->name.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (request = all_requests; request; request = request->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate != regservice_termination_callback) continue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->u.servicereg.default_domain) continue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!d->uid || SystemUID(request->uid) || request->uid == d->uid)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome service_instance **ptr = &request->u.servicereg.instances;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (*ptr && !SameDomainName(&(*ptr)->domain, &d->name)) ptr = &(*ptr)->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we don't already have this domain in our list for this registration, add it now
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!*ptr) register_service_instance(request, &d->name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else debugf("udsserver_default_reg_domain_changed %##s already in list, not re-adding", &d->name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Normally we should not fail to find the specified instance
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // One case where this can happen is if a uDNS update fails for some reason,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // and regservice_callback then calls unlink_and_free_service_instance and disposes of that instance.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("udsserver_default_reg_domain_changed domain %##s not found for service %#s type %s",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome &d->name, request->u.servicereg.name.c, request->u.servicereg.type_as_string);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (p = AutoRegistrationDomains; p; p=p->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!p->uid || SystemUID(request->uid) || request->uid == p->uid)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (p) debugf("udsserver_default_reg_domain_changed %##s still in list, not removing", &d->name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (si->clientnotified) SendServiceRemovalNotification(&si->srs); // Do this *before* clearing si->request backpointer
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Now that we've cut this service_instance from the list, we MUST clear the si->request backpointer.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Otherwise what can happen is this: While our mDNS_DeregisterService is in the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // process of completing asynchronously, the client cancels the entire operation, so
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // regservice_termination_callback then runs through the whole list deregistering each
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // instance, clearing the backpointers, and then disposing the parent request_state object.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // However, because this service_instance isn't in the list any more, regservice_termination_callback
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // has no way to find it and clear its backpointer, and then when our mDNS_DeregisterService finally
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // completes later with a mStatus_MemFree message, it calls unlink_and_free_service_instance() with
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // a service_instance with a stale si->request backpointer pointing to memory that's already been freed.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_DeregisterService(&mDNSStorage, &si->srs);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (err) { LogMsg("udsserver_default_reg_domain_changed err %d", err); unlink_and_free_service_instance(si); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Don't allow normal and anonymous registration to coexist.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mDNSBool CheckForMixedRegistrations(domainname *regtype, domainname *domain, mDNSBool AnonData)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We only care about local domains where the anonymous extension is
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // implemented.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!SameDomainName(domain, (const domainname *) "\x5" "local"))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (request = all_requests; request; request = request->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate != regservice_termination_callback) continue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ptr = request->u.servicereg.instances; ptr ; ptr = ptr->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!SameDomainName(&ptr->domain, (const domainname *)"\x5" "local") ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome !SameDomainName(&request->u.servicereg.type, regtype))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we are about to register a anonymous registraion, we dont't want to
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // allow the regular ones and vice versa.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("CheckForMixedRegistrations: Normal registration already exists for %##s", regtype->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Allow multiple regular registrations
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("CheckForMixedRegistrations: Anonymous registration already exists for %##s", regtype->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Returns true if the interfaceIndex value matches one of the pre-defined
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// special values listed in the switch statement below.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mDNSBool PreDefinedInterfaceIndex(mDNSu32 interfaceIndex)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_regservice_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char name[256]; // Lots of spare space for extra-long names that we'll auto-truncate down to 63 bytes
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char domain[MAX_ESCAPED_DOMAIN_NAME], host[MAX_ESCAPED_DOMAIN_NAME];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 interfaceIndex = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Map kDNSServiceInterfaceIndexP2P to kDNSServiceInterfaceIndexAny with the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // kDNSServiceFlagsIncludeP2P flag set.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (interfaceIndex == kDNSServiceInterfaceIndexP2P)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("handle_regservice_request: mapping kDNSServiceInterfaceIndexP2P to kDNSServiceInterfaceIndexAny + kDNSServiceFlagsIncludeP2P");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome InterfaceID = mDNSPlatformInterfaceIDfromInterfaceIndex(&mDNSStorage, interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // The registration is scoped to a specific interface index, but the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // interface is not currently in our list.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If it's one of the specially defined inteface index values, just return an error.
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogInfo("handle_regservice_request: bad interfaceIndex %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Otherwise, use the specified interface index value and the registration will
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // be applied to that interface when it comes up.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome InterfaceID = (mDNSInterfaceID)(uintptr_t)interfaceIndex;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("handle_regservice_request: registration pending for interface index %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (get_string(&request->msgptr, request->msgend, name, sizeof(name)) < 0 ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_string(&request->msgptr, request->msgend, type_as_string, MAX_ESCAPED_DOMAIN_NAME) < 0 ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_string(&request->msgptr, request->msgend, domain, MAX_ESCAPED_DOMAIN_NAME) < 0 ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_string(&request->msgptr, request->msgend, host, MAX_ESCAPED_DOMAIN_NAME) < 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("ERROR: handle_regservice_request - Couldn't read name/regtype/domain"); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.InterfaceID = InterfaceID;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformStrCopy(request->u.servicereg.type_as_string, type_as_string);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->msgptr + 2 > request->msgend) request->msgptr = NULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.port.b[0] = *request->msgptr++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.port.b[1] = *request->msgptr++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.txtlen = get_uint16(&request->msgptr, request->msgend);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome msgTXTData = get_rdata(&request->msgptr, request->msgend, request->u.servicereg.txtlen);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome if (!request->msgptr) { LogMsg("%3d: DNSServiceRegister(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.txtdata = mallocL("service_info txtdata", request->u.servicereg.txtlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->u.servicereg.txtdata) FatalError("ERROR: handle_regservice_request - malloc");
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome mDNSPlatformMemCopy(request->u.servicereg.txtdata, msgTXTData, request->u.servicereg.txtlen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Check for sub-types after the service type
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.num_subtypes = ChopSubTypes(request->u.servicereg.type_as_string, &AnonData); // Note: Modifies regtype string to remove trailing subtypes
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: handle_regservice_request - ChopSubTypes failed %s", request->u.servicereg.type_as_string);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: handle_regservice_request: AnonDataLen %d", AnonDataLen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Don't try to construct "domainname t" until *after* ChopSubTypes has worked its magic
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!*request->u.servicereg.type_as_string || !MakeDomainNameFromDNSNameString(&request->u.servicereg.type, request->u.servicereg.type_as_string))
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome { LogMsg("ERROR: handle_regservice_request - type_as_string bad %s", request->u.servicereg.type_as_string); goto bad_param; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.name = mDNSStorage.nicelabel;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the client is allowing AutoRename, then truncate name to legal length before converting it to a DomainLabel
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((flags & kDNSServiceFlagsNoAutoRename) == 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int newlen = TruncateUTF8ToLength((mDNSu8*)name, mDNSPlatformStrLen(name), MAX_DOMAIN_LABEL);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainLabelFromLiteralString(&request->u.servicereg.name, name))
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome { LogMsg("ERROR: handle_regservice_request - name bad %s", name); goto bad_param; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.default_domain = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&d, domain))
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome { LogMsg("ERROR: handle_regservice_request - domain bad %s", domain); goto bad_param; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.default_domain = mDNStrue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We don't allow the anonymous and the regular ones to coexist
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome if (!CheckForMixedRegistrations(&request->u.servicereg.type, &d, request->u.servicereg.AnonData)) { goto bad_param; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!ConstructServiceName(&srv, &request->u.servicereg.name, &request->u.servicereg.type, &d))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: handle_regservice_request - Couldn't ConstructServiceName from, “%#s” “%##s” “%##s”",
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome request->u.servicereg.name.c, request->u.servicereg.type.c, d.c); goto bad_param;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&request->u.servicereg.host, host))
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome { LogMsg("ERROR: handle_regservice_request - host bad %s", host); goto bad_param; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.autorename = (flags & kDNSServiceFlagsNoAutoRename ) == 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.servicereg.allowremotequery = (flags & kDNSServiceFlagsAllowRemoteQuery) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Some clients use mDNS for lightweight copy protection, registering a pseudo-service with
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // a port number of zero. When two instances of the protected client are allowed to run on one
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // machine, we don't want to see misleading "Bogus client" messages in syslog and the console.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!mDNSIPPortIsZero(request->u.servicereg.port))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int count = CountExistingRegistrations(&srv, request->u.servicereg.port);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("Client application[%d](%s) registered %d identical instances of service %##s port %u.", request->process_id,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->pid_name, count+1, srv.c, mDNSVal16(request->u.servicereg.port));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceRegister(%X, %d, \"%s\", \"%s\", \"%s\", \"%s\", %u) START PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->sd, flags, interfaceIndex, name, request->u.servicereg.type_as_string, domain, host,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSVal16(request->u.servicereg.port), request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We need to unconditionally set request->terminate, because even if we didn't successfully
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // start any registrations right now, subsequent configuration changes may cause successful
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // registrations to be added, and we'll need to cancel them before freeing this memory.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We also need to set request->terminate first, before adding additional service instances,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // because the uds_validatelists uses the request->terminate function pointer to determine
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // what kind of request this is, and therefore what kind of list validation is required.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->terminate = regservice_termination_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = AuthorizedDomain(request, &d, AutoRegistrationDomains) ? register_service_instance(request, &d) : mStatus_NoError;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.servicereg.autoname) UpdateDeviceInfoRecord(&mDNSStorage);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note that we don't report errors for non-local, non-explicit domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ptr = AutoRegistrationDomains; ptr; ptr = ptr->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!ptr->uid || SystemUID(request->uid) || request->uid == ptr->uid)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome register_service_instance(request, &ptr->name);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome freeL("handle_regservice_request (txtdata)", request->u.servicereg.txtdata);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void FoundInstance(mDNS *const m, DNSQuestion *question, const ResourceRecord *const answer, QC_result AddRecord)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = AddRecord ? kDNSServiceFlagsAdd : 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request_state *req = question->QuestionContext;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)m; // Unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: FoundInstance: Should not be called with rrtype %d (not a PTR record)", req->sd, answer->rrtype); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNSOpaque16IsZero(question->TargetQID) && (question->BrowseThreshold > 0) && (question->CurrentAnswers >= question->BrowseThreshold))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (GenerateNTDResponse(&answer->rdata->u.name, answer->InterfaceID, req, &rep, browse_reply_op, flags, mStatus_NoError) != mStatus_NoError)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (SameDomainName(&req->u.browser.regtype, (const domainname*)"\x09_services\x07_dns-sd\x04_udp"))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Special support to enable the DNSServiceBrowse call made by Bonjour Browser
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Remove after Bonjour Browser is updated to use DNSServiceQueryRecord instead of DNSServiceBrowse
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome GenerateBonjourBrowserResponse(&answer->rdata->u.name, answer->InterfaceID, req, &rep, browse_reply_op, flags, mStatus_NoError);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: FoundInstance: %##s PTR %##s received from network is not valid DNS-SD service pointer",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->sd, answer->name->c, answer->rdata->u.name.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceBrowse(%##s, %s) RESULT %s %d: %s",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->sd, question->qname.c, DNSTypeName(question->qtype), AddRecord ? "Add" : "Rmv",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformInterfaceIndexfromInterfaceID(m, answer->InterfaceID, mDNSfalse), RRDisplayString(m, answer));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus add_domain_to_browser(request_state *info, const domainname *d)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (p = info->u.browser.browsers; p; p = p->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { debugf("add_domain_to_browser %##s already in list", d->c); return mStatus_AlreadyRegistered; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_StartBrowse(&mDNSStorage, &b->q, &info->u.browser.regtype, d, info->u.browser.AnonData, info->u.browser.interface_id, info->flags,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome info->u.browser.ForceMCast, (info->flags & kDNSServiceFlagsBackgroundTrafficClass) != 0, FoundInstance, info);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("mDNS_StartBrowse returned %d for type %##s domain %##s", err, info->u.browser.regtype.c, d->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceBrowse(%##s) START PID[%d](%s)", info->sd, b->q.qname.c, info->process_id,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (callExternalHelpers(info->u.browser.interface_id, &b->domain, info->flags))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConstructServiceName(&tmp, NULL, &info->u.browser.regtype, &b->domain);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("add_domain_to_browser: calling external_start_browsing_for_service()");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_browsing_for_service(info->u.browser.interface_id, &tmp, kDNSType_PTR, info->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void browse_termination_callback(request_state *info)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Stop the domain enumeration queries to discover the WAB legacy browse domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("%3d: DNSServiceBrowse Cancel WAB PID[%d](%s)", info->sd, info->process_id, info->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome uDNS_StopWABQueries(&mDNSStorage, UDNS_WAB_LBROWSE_QUERY);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("Anonymous", (void *)info->u.browser.AnonData);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (callExternalHelpers(info->u.browser.interface_id, &ptr->domain, info->flags))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConstructServiceName(&tmp, NULL, &info->u.browser.regtype, &ptr->domain);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("browse_termination_callback: calling external_stop_browsing_for_service()");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_browsing_for_service(info->u.browser.interface_id, &tmp, kDNSType_PTR, info->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceBrowse(%##s) STOP PID[%d](%s)", info->sd, ptr->q.qname.c, info->process_id, info->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopBrowse(&mDNSStorage, &ptr->q); // no need to error-check result
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, &ptr->q, info, q_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("browser_t/browse_termination_callback", ptr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void udsserver_automatic_browse_domain_changed(const DNameListElem *const d, const mDNSBool add)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome debugf("udsserver_automatic_browse_domain_changed: %s default browse domain %##s", add ? "Adding" : "Removing", d->name.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome machserver_automatic_browse_domain_changed(&d->name, add);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (request = all_requests; request; request = request->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->terminate != browse_termination_callback) continue; // Not a browse operation
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->u.browser.default_domain) continue; // Not an auto-browse operation
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!d->uid || SystemUID(request->uid) || request->uid == d->uid)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome browser_t **ptr = &request->u.browser.browsers;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (*ptr && !SameDomainName(&(*ptr)->domain, &d->name)) ptr = &(*ptr)->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we don't already have this domain in our list for this browse operation, add it now
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!*ptr) add_domain_to_browser(request, &d->name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else debugf("udsserver_automatic_browse_domain_changed %##s already in list, not re-adding", &d->name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!*ptr) LogMsg("udsserver_automatic_browse_domain_changed ERROR %##s not found", &d->name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!p->uid || SystemUID(request->uid) || request->uid == p->uid)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (p) debugf("udsserver_automatic_browse_domain_changed %##s still in list, not removing", &d->name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQueryWithRemoves(&mDNSStorage, &rem->q);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("browser_t/udsserver_automatic_browse_domain_changed", rem);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void FreeARElemCallback(mDNS *const m, AuthRecord *const rr, mStatus result)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)m; // unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // On shutdown, mDNS_Close automatically deregisters all records
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Since in this case no one has called DeregisterLocalOnlyDomainEnumPTR to cut the record
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // from the LocalDomainEnumRecords list, we do this here before we free the memory.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // (This should actually no longer be necessary, now that we do the proper cleanup in
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // udsserver_exit. To confirm this, we'll log an error message if we do find a record that
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // hasn't been cut from the list yet. If these messages don't appear, we can delete this code.)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (*ptr && &(*ptr)->ar != rr) ptr = &(*ptr)->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (*ptr) { *ptr = (*ptr)->next; LogMsg("FreeARElemCallback: Have to cut %s", ARDisplayString(m, rr)); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// RegisterLocalOnlyDomainEnumPTR and DeregisterLocalOnlyDomainEnumPTR largely duplicate code in
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// "FoundDomain" in uDNS.c for creating and destroying these special mDNSInterface_LocalOnly records.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// We may want to turn the common code into a subroutine.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void RegisterLocalOnlyDomainEnumPTR(mDNS *m, const domainname *d, int type)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // allocate/register legacy and non-legacy _browse PTR record
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ARListElem *ptr = mDNSPlatformMemAllocate(sizeof(*ptr));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (type == mDNS_DomainTypeBrowse ) ? "browse domain " :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (type == mDNS_DomainTypeRegistration ) ? "registration dom" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (type == mDNS_DomainTypeBrowseAutomatic) ? "automatic browse" : "?", d->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_SetupResourceRecord(&ptr->ar, mDNSNULL, mDNSInterface_LocalOnly, kDNSType_PTR, 7200, kDNSRecordTypeShared, AuthRecordLocalOnly, FreeARElemCallback, ptr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome MakeDomainNameFromDNSNameString(&ptr->ar.namestorage, mDNS_DomainTypeNames[type]);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AppendDNSNameString (&ptr->ar.namestorage, "local");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AssignDomainName(&ptr->ar.resrec.rdata->u.name, d);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("SetSCPrefsBrowseDomain: mDNS_Register returned error %d", err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void DeregisterLocalOnlyDomainEnumPTR(mDNS *m, const domainname *d, int type)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome domainname lhs; // left-hand side of PTR, for comparison
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (type == mDNS_DomainTypeBrowse ) ? "browse domain " :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (type == mDNS_DomainTypeRegistration ) ? "registration dom" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (type == mDNS_DomainTypeBrowseAutomatic) ? "automatic browse" : "?", d->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome MakeDomainNameFromDNSNameString(&lhs, mDNS_DomainTypeNames[type]);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (SameDomainName(&(*ptr)->ar.resrec.rdata->u.name, d) && SameDomainName((*ptr)->ar.resrec.name, &lhs))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void AddAutoBrowseDomain(const mDNSu32 uid, const domainname *const name)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNameListElem *new = mDNSPlatformMemAllocate(sizeof(DNameListElem));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome udsserver_automatic_browse_domain_changed(new, mDNStrue);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void RmvAutoBrowseDomain(const mDNSu32 uid, const domainname *const name)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (*p && (!SameDomainName(&(*p)->name, name) || (*p)->uid != uid)) p = &(*p)->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!*p) LogMsg("RmvAutoBrowseDomain: Got remove event for domain %##s not in list", name->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome udsserver_automatic_browse_domain_changed(ptr, mDNSfalse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void SetPrefsBrowseDomains(mDNS *m, DNameListElem *browseDomains, mDNSBool add)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome RegisterLocalOnlyDomainEnumPTR(m, &d->name, mDNS_DomainTypeBrowse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DeregisterLocalOnlyDomainEnumPTR(m, &d->name, mDNS_DomainTypeBrowse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void UpdateDeviceInfoRecord(mDNS *const m)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // Don't need to register the device info record for kDNSServiceInterfaceIndexLocalOnly registrations.
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome if (req->terminate == regservice_termination_callback && req->u.servicereg.autoname && req->interfaceIndex != kDNSServiceInterfaceIndexLocalOnly)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If DeviceInfo record is currently registered, see if we need to deregister it
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (m->DeviceInfo.resrec.RecordType != kDNSRecordTypeUnregistered)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (num_autoname == 0 || !SameDomainLabelCS(m->DeviceInfo.resrec.name->c, m->nicelabel.c))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("UpdateDeviceInfoRecord Deregister %##s", m->DeviceInfo.resrec.name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If DeviceInfo record is not currently registered, see if we need to register it
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (m->DeviceInfo.resrec.RecordType == kDNSRecordTypeUnregistered)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_SetupResourceRecord(&m->DeviceInfo, mDNSNULL, mDNSNULL, kDNSType_TXT, kStandardTTL, kDNSRecordTypeAdvisory, AuthRecordAny, mDNSNULL, mDNSNULL);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConstructServiceName(&m->DeviceInfo.namestorage, &m->nicelabel, &DeviceInfoName, &localdomain);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome m->DeviceInfo.resrec.rdlength = initializeDeviceInfoTXT(m, m->DeviceInfo.resrec.rdata->u.data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("UpdateDeviceInfoRecord Register %##s", m->DeviceInfo.resrec.name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#else // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void UpdateDeviceInfoRecord(mDNS *const m)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)m; // unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport void udsserver_handle_configchange(mDNS *const m)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For autoname services, see if the default service name has changed, necessitating an automatic update
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->terminate == regservice_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->u.servicereg.autoname && !SameDomainLabelCS(req->u.servicereg.name.c, m->nicelabel.c))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ptr = req->u.servicereg.instances; ptr; ptr = ptr->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (ptr->clientnotified) SendServiceRemovalNotification(&ptr->srs);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("udsserver_handle_configchange: Calling deregister for Service %##s", ptr->srs.RR_PTR.resrec.name->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNS_DeregisterService_drt(m, &ptr->srs, mDNS_Dereg_rapid))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome regservice_callback(m, &ptr->srs, mStatus_MemFree); // If service deregistered already, we can re-register immediately
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Let the platform layer get the current DNS information
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformSetDNSConfig(m, mDNSfalse, mDNSfalse, mDNSNULL, &RegDomains, &BrowseDomains, mDNSfalse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Any automatic registration domains are also implicitly automatic browsing domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (RegDomains) SetPrefsBrowseDomains(m, RegDomains, mDNStrue); // Add the new list first
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (AutoRegistrationDomains) SetPrefsBrowseDomains(m, AutoRegistrationDomains, mDNSfalse); // Then clear the old list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Add any new domains not already in our AutoRegistrationDomains list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (*pp && ((*pp)->uid != p->uid || !SameDomainName(&(*pp)->name, &p->name))) pp = &(*pp)->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!*pp) // If not found in our existing list, this is a new default registration domain
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome RegisterLocalOnlyDomainEnumPTR(m, &p->name, mDNS_DomainTypeRegistration);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome udsserver_default_reg_domain_changed(p, mDNStrue);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else // else found same domainname in both old and new lists, so no change, just delete old copy
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Delete any domains in our old AutoRegistrationDomains list that are now gone
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AutoRegistrationDomains = AutoRegistrationDomains->next; // Cut record from list FIRST,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DeregisterLocalOnlyDomainEnumPTR(m, &del->name, mDNS_DomainTypeRegistration);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome udsserver_default_reg_domain_changed(del, mDNSfalse); // before calling udsserver_default_reg_domain_changed()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Now we have our new updated automatic registration domain list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Add new browse domains to internal list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (BrowseDomains) SetPrefsBrowseDomains(m, BrowseDomains, mDNStrue);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Remove old browse domains from internal list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome SetPrefsBrowseDomains(m, SCPrefBrowseDomains, mDNSfalse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome SCPrefBrowseDomains = SCPrefBrowseDomains->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Replace the old browse domains array with the new array
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void AutomaticBrowseDomainChange(mDNS *const m, DNSQuestion *q, const ResourceRecord *const answer, QC_result AddRecord)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)m; // unused;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)q; // unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("AutomaticBrowseDomainChange: %s automatic browse domain %##s",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AddRecord ? "Adding" : "Removing", answer->rdata->u.name.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (AddRecord) AddAutoBrowseDomain(0, &answer->rdata->u.name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else RmvAutoBrowseDomain(0, &answer->rdata->u.name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_browse_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char regtype[MAX_ESCAPED_DOMAIN_NAME], domain[MAX_ESCAPED_DOMAIN_NAME];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 interfaceIndex = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSInterfaceID InterfaceID = mDNSPlatformInterfaceIDfromInterfaceIndex(&mDNSStorage, interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // The browse is scoped to a specific interface index, but the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // interface is not currently in our list.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If it's one of the specially defined inteface index values, just return an error.
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogInfo("handle_browse_request: bad interfaceIndex %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Otherwise, use the specified interface index value and the browse will
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // be applied to that interface when it comes up.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome InterfaceID = (mDNSInterfaceID)(uintptr_t)interfaceIndex;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("handle_browse_request: browse pending for interface index %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (get_string(&request->msgptr, request->msgend, regtype, MAX_ESCAPED_DOMAIN_NAME) < 0 ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_string(&request->msgptr, request->msgend, domain, MAX_ESCAPED_DOMAIN_NAME) < 0) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->msgptr) { LogMsg("%3d: DNSServiceBrowse(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome NumSubTypes = ChopSubTypes(regtype, &AnonData); // Note: Modifies regtype string to remove trailing subtypes
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("handle_browse_request: AnonDataLen %d", AnonDataLen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Account for the null byte
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!AppendDNSNameString(&typedn, regtype + strlen(regtype) + 1 + AnonDataLen))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!regtype[0] || !AppendDNSNameString(&typedn, regtype)) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&temp, regtype)) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For over-long service types, we only allow domain "local"
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (temp.c[0] > 15 && domain[0] == 0) mDNSPlatformStrCopy(domain, "local.");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Set up browser info
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.browser.ForceMCast = (flags & kDNSServiceFlagsForceMulticast) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AssignDomainName(&request->u.browser.regtype, &typedn);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.browser.default_domain = !domain[0];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceBrowse(%X, %d, \"%##s\", \"%s\") START PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->sd, request->flags, interfaceIndex, request->u.browser.regtype.c, domain, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Start the domain enumeration queries to discover the WAB browse domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("%3d: DNSServiceBrowse Start WAB PID[%d](%s)", request->sd, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome uDNS_StartWABQueries(&mDNSStorage, UDNS_WAB_LBROWSE_QUERY);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.browser.AnonData = mallocL("Anonymous", len);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemCopy((void *)request->u.browser.AnonData, AnonData, len);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We need to unconditionally set request->terminate, because even if we didn't successfully
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // start any browses right now, subsequent configuration changes may cause successful
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // browses to be added, and we'll need to cancel them before freeing this memory.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->terminate = browse_termination_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&d, domain)) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (sdom = AutoBrowseDomains; sdom; sdom = sdom->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!sdom->uid || SystemUID(request->uid) || request->uid == sdom->uid)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = add_domain_to_browser(request, &sdom->name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (SameDomainName(&sdom->name, &localdomain)) break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else err = mStatus_NoError; // suppress errors for non-local "default" domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void resolve_result_callback(mDNS *const m, DNSQuestion *question, const ResourceRecord *const answer, QC_result AddRecord)
4b22b9337f359bfd063322244f5336cc7c6ffcfars char fullname[MAX_ESCAPED_DOMAIN_NAME], target[MAX_ESCAPED_DOMAIN_NAME];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request_state *req = question->QuestionContext;
4b22b9337f359bfd063322244f5336cc7c6ffcfars (void)m; // Unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceResolve(%##s) %s %s", req->sd, question->qname.c, AddRecord ? "ADD" : "RMV", RRDisplayString(m, answer));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->u.resolve.srv == answer) req->u.resolve.srv = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->u.resolve.txt == answer) req->u.resolve.txt = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (answer->rrtype == kDNSType_SRV) req->u.resolve.srv = answer;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (answer->rrtype == kDNSType_TXT) req->u.resolve.txt = answer;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!req->u.resolve.txt || !req->u.resolve.srv) return; // only deliver result to client if we have both answers
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConvertDomainNameToCString(answer->name, fullname);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConvertDomainNameToCString(&req->u.resolve.srv->rdata->u.srv.target, target);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // calculate reply length
4b22b9337f359bfd063322244f5336cc7c6ffcfars // allocate/init reply header
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rep = create_reply(resolve_reply_op, len, req);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rep->rhdr->ifi = dnssd_htonl(mDNSPlatformInterfaceIndexfromInterfaceID(m, answer->InterfaceID, mDNSfalse));
4b22b9337f359bfd063322244f5336cc7c6ffcfars // write reply data to message
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *data++ = req->u.resolve.srv->rdata->u.srv.port.b[0];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *data++ = req->u.resolve.srv->rdata->u.srv.port.b[1];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome put_uint16(req->u.resolve.txt->rdlength, &data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome put_rdata (req->u.resolve.txt->rdlength, req->u.resolve.txt->rdata->u.data, &data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceResolve(%s) RESULT %s:%d", req->sd, fullname, target, mDNSVal16(req->u.resolve.srv->rdata->u.srv.port));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void resolve_termination_callback(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceResolve(%##s) STOP PID[%d](%s)", request->sd, request->u.resolve.qtxt.qname.c, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, &request->u.resolve.qtxt);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, &request->u.resolve.qsrv);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, &request->u.resolve.qsrv, request, q_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_resolving_service(request->u.resolve.qsrv.InterfaceID, &request->u.resolve.qsrv.qname, request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_resolve_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char name[256], regtype[MAX_ESCAPED_DOMAIN_NAME], domain[MAX_ESCAPED_DOMAIN_NAME];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // extract the data from the message
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 interfaceIndex = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Map kDNSServiceInterfaceIndexP2P to kDNSServiceInterfaceIndexAny with the kDNSServiceFlagsIncludeP2P
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // flag set so that the resolve will run over P2P interfaces that are not yet created.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (interfaceIndex == kDNSServiceInterfaceIndexP2P)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("handle_resolve_request: mapping kDNSServiceInterfaceIndexP2P to kDNSServiceInterfaceIndexAny + kDNSServiceFlagsIncludeP2P");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome InterfaceID = mDNSPlatformInterfaceIDfromInterfaceIndex(&mDNSStorage, interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // The operation is scoped to a specific interface index, but the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // interface is not currently in our list.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If it's one of the specially defined inteface index values, just return an error.
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogInfo("handle_resolve_request: bad interfaceIndex %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Otherwise, use the specified interface index value and the operation will
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // be applied to that interface when it comes up.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome InterfaceID = (mDNSInterfaceID)(uintptr_t)interfaceIndex;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("handle_resolve_request: resolve pending for interface index %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (get_string(&request->msgptr, request->msgend, name, 256) < 0 ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_string(&request->msgptr, request->msgend, regtype, MAX_ESCAPED_DOMAIN_NAME) < 0 ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_string(&request->msgptr, request->msgend, domain, MAX_ESCAPED_DOMAIN_NAME) < 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("ERROR: handle_resolve_request - Couldn't read name/regtype/domain"); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->msgptr) { LogMsg("%3d: DNSServiceResolve(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (build_domainname_from_strings(&fqdn, name, regtype, domain) < 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("ERROR: handle_resolve_request bad “%s” “%s” “%s”", name, regtype, domain); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemZero(&request->u.resolve, sizeof(request->u.resolve));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // format questions
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.InterfaceID = InterfaceID;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AssignDomainName(&request->u.resolve.qsrv.qname, &fqdn);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.LongLived = (flags & kDNSServiceFlagsLongLivedQuery ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.ExpectUnique = mDNStrue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.ForceMCast = (flags & kDNSServiceFlagsForceMulticast ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.ReturnIntermed = (flags & kDNSServiceFlagsReturnIntermediates) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.SuppressUnusable = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.DenyOnCellInterface = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.DenyOnExpInterface = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.AppendSearchDomains = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.RetryWithSearchDomains = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.WakeOnResolve = (flags & kDNSServiceFlagsWakeOnResolve) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.UseBackgroundTrafficClass = (flags & kDNSServiceFlagsBackgroundTrafficClass) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.ValidationRequired = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.ValidatingResponse = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.pid = request->process_id;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.QuestionCallback = resolve_result_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.QuestionContext = request;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.InterfaceID = InterfaceID;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AssignDomainName(&request->u.resolve.qtxt.qname, &fqdn);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.LongLived = (flags & kDNSServiceFlagsLongLivedQuery ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.ExpectUnique = mDNStrue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.ForceMCast = (flags & kDNSServiceFlagsForceMulticast ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.ReturnIntermed = (flags & kDNSServiceFlagsReturnIntermediates) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.SuppressUnusable = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.DenyOnCellInterface = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.DenyOnExpInterface = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.AppendSearchDomains = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.RetryWithSearchDomains = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.UseBackgroundTrafficClass = (flags & kDNSServiceFlagsBackgroundTrafficClass) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.ValidationRequired = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.ValidatingResponse = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.pid = request->process_id;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.QuestionCallback = resolve_result_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qtxt.QuestionContext = request;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.ReportTime = NonZeroTime(mDNS_TimeNow(&mDNSStorage) + 130 * mDNSPlatformOneSecond);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.external_advertise = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!AuthorizedDomain(request, &fqdn, AutoBrowseDomains)) return(mStatus_NoError);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // ask the questions
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceResolve(%X %d %##s) START PID[%d](%s)", request->sd, flags, interfaceIndex,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.qsrv.qname.c, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_StartQuery(&mDNSStorage, &request->u.resolve.qsrv);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_StartQuery(&mDNSStorage, &request->u.resolve.qtxt);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, &request->u.resolve.qsrv);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->terminate = resolve_termination_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, &request->u.resolve.qsrv, request, q_start);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (callExternalHelpers(InterfaceID, &fqdn, flags))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.resolve.external_advertise = mDNStrue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("handle_resolve_request: calling external_start_resolving_service()");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_resolving_service(InterfaceID, &fqdn, flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// mDNS operation functions. Each operation has 3 associated functions - a request handler that parses
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// the client's request and makes the appropriate mDNSCore call, a result handler (passed as a callback
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// to the mDNSCore routine) that sends results back to the client, and a termination routine that aborts
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// the mDNSCore operation if the client dies or closes its socket.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Returns -1 to tell the caller that it should not try to reissue the query anymore
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Returns 1 on successfully appending a search domain and the caller should reissue the new query
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Returns 0 when there are no more search domains and the caller should reissue the query
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal int AppendNewSearchDomain(mDNS *const m, DNSQuestion *question)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Sanity check: The caller already checks this. We use -1 to indicate that we have searched all
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // the domains and should try the single label query directly on the wire.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("AppendNewSearchDomain: question %##s (%s) SearchListIndex is -1", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("AppendNewSearchDomain: question %##s (%s) AppendSearchDoamins is 0", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Save the original name, before we modify them below.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome question->qnameOrig = mallocL("AppendNewSearchDomain", sizeof(domainname));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!question->qnameOrig) { LogMsg("AppendNewSearchDomain: ERROR!! malloc failure"); return -1; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AssignDomainName(question->qnameOrig, &question->qname);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("AppendSearchDomain: qnameOrig %##s", question->qnameOrig->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome sd = uDNS_GetNextSearchDomain(m, question->InterfaceID, &question->SearchListIndex, !question->AppendLocalSearchDomains);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We use -1 to indicate that we have searched all the domains and should try the single label
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // query directly on the wire. uDNS_GetNextSearchDomain should never return a negative value
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("AppendNewSearchDomain: ERROR!! uDNS_GetNextSearchDomain returned -1");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Not a common case. Perhaps, we should try the next search domain if it exceeds ?
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (sd && (DomainNameLength(question->qnameOrig) + DomainNameLength(sd)) > MAX_DOMAIN_NAME)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("AppendNewSearchDomain: ERROR!! exceeding max domain length for %##s (%s) SearchDomain %##s length %d, Question name length %d", question->qnameOrig->c, DNSTypeName(question->qtype), sd->c, DomainNameLength(question->qnameOrig), DomainNameLength(sd));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // if there are no more search domains and we have already tried this question
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // without appending search domains, then we are done.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("AppnedNewSearchDomain: No more search domains for question with name %##s (%s), not trying anymore", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Stop the question before changing the name as negative cache entries could be pointing at this question.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Even if we don't change the question in the case of returning 0, the caller is going to restart the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // question.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (err) { LogMsg("AppendNewSearchDomain: ERROR!! %##s %s mDNS_StopQuery: %d, while retrying with search domains", question->qname.c, DNSTypeName(question->qtype), (int)err); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AssignDomainName(&question->qname, question->qnameOrig);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("AppnedNewSearchDomain: Returning question with name %##s, SearchListIndex %d", question->qname.c, question->SearchListIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Try the question as single label
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("AppnedNewSearchDomain: No more search domains for question with name %##s (%s), trying one last time", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mDNSBool DomainInSearchList(const domainname *domain, mDNSBool excludeLocal)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (excludeLocal && SameDomainName(&s->domain, &localdomain))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: When qcount == scount, we do a complete match of the domain
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // which is expected by the callers.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const domainname *d = SkipLeadingLabels(domain, (qcount - scount));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// The caller already checks that this is a dotlocal question.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mDNSBool ShouldDeliverNegativeResponse(mDNS *const m, DNSQuestion *question)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the question matches the search domain exactly or the search domain is a
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // subdomain of the question, it is most likely a valid unicast domain and hence
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // don't suppress negative responses.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the user has configured ".local" as a search domain, we don't want
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to deliver a negative response for names ending in ".local" as that would
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // prevent bonjour discovery. Passing mDNStrue for the last argument excludes
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // ".local" search domains.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (DomainInSearchList(&question->qname, mDNStrue))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("ShouldDeliverNegativeResponse: Question %##s (%s) in SearchList", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Deliver negative response for A/AAAA if there was a positive response for AAAA/A respectively.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (question->qtype != kDNSType_A && question->qtype != kDNSType_AAAA)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("ShouldDeliverNegativeResponse: Question %##s (%s) not answering local question with negative unicast response",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome qtype = (question->qtype == kDNSType_A ? kDNSType_AAAA : kDNSType_A);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!mDNS_CheckForCacheRecord(m, question, qtype))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("ShouldDeliverNegativeResponse:Question %##s (%s) not answering local question with negative unicast response"
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome " (can't find positive record)", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("ShouldDeliverNegativeResponse:Question %##s (%s) answering local with negative unicast response (found positive record)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Workaround for networks using Microsoft Active Directory using "local" as a private internal
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// top-level domain
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus SendAdditionalQuery(DNSQuestion *q, request_state *request, mStatus err)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome extern domainname ActiveDirectoryPrimaryDomain;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome #define VALID_MSAD_SRV_TRANSPORT(T) (SameDomainLabel((T)->c, (const mDNSu8 *)"\x4_tcp") || SameDomainLabel((T)->c, (const mDNSu8 *)"\x4_udp"))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome #define VALID_MSAD_SRV(Q) ((Q)->qtype == kDNSType_SRV && VALID_MSAD_SRV_TRANSPORT(SecondLabel(&(Q)->qname)))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("SendAdditionalQuery: question2 NULL for %##s (%s)", q->qname.c, DNSTypeName(q->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Sanity check: If we already sent an additonal query, we don't need to send one more.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 1. When the application calls DNSServiceQueryRecord or DNSServiceGetAddrInfo with a .local name, this function
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // is called to see whether a unicast query should be sent or not.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // 2. As a result of appending search domains, the question may be end up with a .local suffix even though it
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // was not a .local name to start with. In that case, queryrecord_result_callback calls this function to
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // send the additional query.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Thus, it should not be called more than once.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("SendAdditionalQuery: question2 already sent for %##s (%s), no more q2", q->qname.c, DNSTypeName(q->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!q->ForceMCast && SameDomainLabel(LastLabel(&q->qname), (const mDNSu8 *)&localdomain))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (q->qtype == kDNSType_A || q->qtype == kDNSType_AAAA || VALID_MSAD_SRV(q))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q2 = mallocL("DNSQuestion", sizeof(DNSQuestion));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!q2) FatalError("ERROR: SendAdditionalQuery malloc");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Always set the QuestionContext to indicate that this question should be stopped
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // before freeing. Don't rely on "q".
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the query starts as a single label e.g., somehost, and we have search domains with .local,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // queryrecord_result_callback calls this function when .local is appended to "somehost".
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // At that time, the name in "q" is pointing at somehost.local and its qnameOrig pointing at
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // "somehost". We need to copy that information so that when we retry with a different search
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // domain e.g., mycompany.local, we get "somehost.mycompany.local".
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (*question2)->qnameOrig = mallocL("SendAdditionalQuery", DomainNameLength(q->qnameOrig));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!(*question2)->qnameOrig) { LogMsg("SendAdditionalQuery: ERROR!! malloc failure"); return mStatus_NoMemoryErr; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AssignDomainName((*question2)->qnameOrig, q->qnameOrig);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("SendAdditionalQuery: qnameOrig %##s", (*question2)->qnameOrig->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For names of the form "<one-or-more-labels>.bar.local." we always do a second unicast query in parallel.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For names of the form "<one-label>.local." it's less clear whether we should do a unicast query.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the name being queried is exactly the same as the name in the DHCP "domain" option (e.g. the DHCP
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // "domain" is my-small-company.local, and the user types "my-small-company.local" into their web browser)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // then that's a hint that it's worth doing a unicast query. Otherwise, we first check to see if the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // site's DNS server claims there's an SOA record for "local", and if so, that's also a hint that queries
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // for names in the "local" domain will be safely answered privately before they hit the root name servers.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note that in the "my-small-company.local" example above there will typically be an SOA record for
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // "my-small-company.local" but *not* for "local", which is why the "local SOA" check would fail in that case.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We need to check against both ActiveDirectoryPrimaryDomain and SearchList. If it matches against either
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // of those, we don't want do the SOA check for the local
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (labels == 2 && !SameDomainName(&q->qname, &ActiveDirectoryPrimaryDomain) && !DomainInSearchList(&q->qname, mDNSfalse))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Don't append search domains for the .local SOA query
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceQueryRecord(%##s, %s) unicast", request->sd, q2->qname.c, DNSTypeName(q2->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (err) LogMsg("%3d: ERROR: DNSServiceQueryRecord %##s %s mDNS_StartQuery: %d", request->sd, q2->qname.c, DNSTypeName(q2->qtype), (int)err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#else // !UNICAST_DISABLED
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // !UNICAST_DISABLED
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// This function tries to append a search domain if valid and possible. If so, returns true.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mDNSBool RetryQuestionWithSearchDomains(mDNS *const m, DNSQuestion *question, request_state *req, QC_result AddRecord)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // RetryWithSearchDomains tells the core to call us back so that we can retry with search domains if there is no
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // answer in the cache or /etc/hosts. In the first call back from the core, we clear RetryWithSearchDomains so
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // that we don't get called back repeatedly. If we got an answer from the cache or /etc/hosts, we don't touch
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // RetryWithSearchDomains which may or may not be set.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we get e.g., NXDOMAIN and the query is neither suppressed nor exhausted the domain search list and
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // is a valid question for appending search domains, retry by appending domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((AddRecord != QC_suppressed) && question->SearchListIndex != -1 && question->AppendSearchDomains)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // As long as the result is either zero or 1, we retry the question. If we exahaust the search
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // domains (result is zero) we try the original query (as it was before appending the search
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // domains) as such on the wire as a last resort if we have not tried them before. For queries
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // with more than one label, we have already tried them before appending search domains and
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // hence don't retry again
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: RetryQuestionWithSearchDomains(%##s, %s), retrying after appending search domain", req->sd, question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the result was zero, it meant that there are no search domains and we just retried the question
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // as a single label and we should not retry with search domains anymore.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: ERROR: RetryQuestionWithSearchDomains %##s %s mDNS_StartQuery: %d, while retrying with search domains", req->sd, question->qname.c, DNSTypeName(question->qtype), (int)err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We have already stopped the query and could not restart. Reset the appropriate pointers
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // so that we don't call stop again when the question terminates
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("%3d: RetryQuestionWithSearchDomains: Not appending search domains - SuppressQuery %d, SearchListIndex %d, AppendSearchDomains %d", req->sd, AddRecord, question->SearchListIndex, question->AppendSearchDomains);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void queryrecord_result_reply(mDNS *const m, request_state *req, DNSQuestion *question, const ResourceRecord *const answer, QC_result AddRecord,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConvertDomainNameToCString(answer->name, name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: %s(%##s, %s) %s %s", req->sd,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->hdr.op == query_request ? "DNSServiceQueryRecord" : "DNSServiceGetAddrInfo",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome question->qname.c, DNSTypeName(question->qtype), AddRecord ? "ADD" : "RMV", RRDisplayString(m, answer));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome len = sizeof(DNSServiceFlags); // calculate reply data length
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome len += 3 * sizeof(mDNSu16); // type, class, rdlen
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rep = create_reply(req->hdr.op == query_request ? query_reply_op : addrinfo_reply_op, len, req);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (question->ValidationRequired && question->ValidationState == DNSSECValDone)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome switch (question->ValidationStatus) //Set the dnssec flags to be passed on to the Apps here
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("queryrecord_result_reply unknown status %d for %##s", question->ValidationStatus, question->qname.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Call mDNSPlatformInterfaceIndexfromInterfaceID, but suppressNetworkChange (last argument). Otherwise, if the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // InterfaceID is not valid, then it simulates a "NetworkChanged" which in turn makes questions
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to be stopped and started including *this* one. Normally the InterfaceID is valid. But when we
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // are using the /etc/hosts entries to answer a question, the InterfaceID may not be known to the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // mDNS core . Eventually, we should remove the calls to "NetworkChanged" in
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // mDNSPlatformInterfaceIndexfromInterfaceID when it can't find InterfaceID as ResourceRecords
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // should not have existed to answer this question if the corresponding interface is not valid.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rep->rhdr->ifi = dnssd_htonl(mDNSPlatformInterfaceIndexfromInterfaceID(m, answer->InterfaceID, mDNStrue));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We need to use putRData here instead of the crude put_rdata function, because the crude put_rdata
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // function just does a blind memory copy without regard to structures that may have holes in them.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!putRData(mDNSNULL, (mDNSu8 *)data, (mDNSu8 *)rep->rhdr + len, answer))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("queryrecord_result_reply putRData failed %d", (mDNSu8 *)rep->rhdr + len - (mDNSu8 *)data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome put_uint32(AddRecord ? answer->rroriginalttl : 0, &data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Stop the question, if we just timed out
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Reset the pointers so that we don't call stop on termination
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if ((AddRecord == QC_add) && req->hdr.op == addrinfo_request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: We count all answers including LocalOnly e.g., /etc/hosts. If we
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // exclude that, v4ans/v6ans will be zero and we would wrongly think that
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // we did not answer questions and setup the status to deliver triggers.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if ((AddRecord == QC_add) && req->hdr.op == query_request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (question->qtype == kDNSType_A || question->qtype == kDNSType_AAAA)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (WCFIsServerRunning((WCFConnection *)m->WCF) && answer->rdlength != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (getsockopt(req->sd, 0, LOCAL_PEERCRED, &x, &xucredlen) >= 0 &&
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (answer->rrtype == kDNSType_A || answer->rrtype == kDNSType_AAAA)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome struct sockaddr_in *const sin = (struct sockaddr_in *)&addr;
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // Instead of this stupid call to putRData it would be much simpler to just assign the value in the sensible way, like this:
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // sin->sin_addr.s_addr = answer->rdata->u.ipv4.NotAnInteger;
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome if (!putRData(mDNSNULL, (mDNSu8 *)&sin->sin_addr, (mDNSu8 *)(&sin->sin_addr + sizeof(mDNSv4Addr)), answer))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("queryrecord_result_reply: WCF AF_INET putRData failed");
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome struct sockaddr_in6 *const sin6 = (struct sockaddr_in6 *)&addr;
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // Instead of this stupid call to putRData it would be much simpler to just assign the value in the sensible way, like this:
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // sin6->sin6_addr.__u6_addr.__u6_addr32[0] = answer->rdata->u.ipv6.l[0];
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // sin6->sin6_addr.__u6_addr.__u6_addr32[1] = answer->rdata->u.ipv6.l[1];
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // sin6->sin6_addr.__u6_addr.__u6_addr32[2] = answer->rdata->u.ipv6.l[2];
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // sin6->sin6_addr.__u6_addr.__u6_addr32[3] = answer->rdata->u.ipv6.l[3];
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome if (!putRData(mDNSNULL, (mDNSu8 *)&sin6->sin6_addr, (mDNSu8 *)(&sin6->sin6_addr + sizeof(mDNSv6Addr)), answer))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("queryrecord_result_reply: WCF AF_INET6 putRData failed");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome debugf("queryrecord_result_reply: Name %s, uid %u, addr length %d", name, x.cr_uid, addr.ss_len);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome CHECK_WCF_FUNCTION((WCFConnection *)WCFNameResolvesToAddr)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome WCFNameResolvesToAddr(m->WCF, name, (struct sockaddr *)&addr, x.cr_uid);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!putRData(mDNSNULL, cname.c, (mDNSu8 *)(cname.c + MAX_DOMAIN_NAME), answer))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("queryrecord_result_reply: WCF CNAME putRData failed");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConvertDomainNameToCString(&cname, cname_cstr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome CHECK_WCF_FUNCTION((WCFConnection *)WCFNameResolvesToAddr)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome WCFNameResolvesToName(m->WCF, name, cname_cstr, x.cr_uid);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else my_perror("queryrecord_result_reply: ERROR: getsockopt LOCAL_PEERCRED");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void queryrecord_result_callback(mDNS *const m, DNSQuestion *question, const ResourceRecord *const answer, QC_result AddRecord)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request_state *req = question->QuestionContext;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceErrorType error = kDNSServiceErr_NoError;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Sanity check: QuestionContext is set to NULL after we stop the question and hence we should not
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // get any callbacks from the core after this.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("queryrecord_result_callback: ERROR!! QuestionContext NULL for %##s (%s)", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->hdr.op == query_request && question == req->u.queryrecord.q2)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->hdr.op == addrinfo_request && question == req->u.addrinfo.q42)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->hdr.op == addrinfo_request && question == req->u.addrinfo.q62)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (q && question->qtype != q->qtype && !SameDomainName(&question->qname, &q->qname))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_result_callback: Stopping q2 local %##s", question->qname.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We got a negative response for the SOA record indicating that .local does not exist.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // But we might have other search domains (that does not end in .local) that can be
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // appended to this question. In that case, we want to retry the question. Otherwise,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // we don't want to try this question as unicast.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (answer->RecordType == kDNSRecordTypePacketNegative && !q->AppendSearchDomains)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_result_callback: question %##s AppendSearchDomains zero", q->qname.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we got a non-negative answer for our "local SOA" test query, start an additional parallel unicast query
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: When we copy the original question, we copy everything including the AppendSearchDomains,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // RetryWithSearchDomains except for qnameOrig which can be non-NULL if the original question is
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // e.g., somehost and then we appended e.g., ".local" and retried that question. See comment in
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // SendAdditionalQuery as to how qnameOrig gets initialized.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceQueryRecord(%##s, %s) unicast, context %p", req->sd, question->qname.c, DNSTypeName(question->qtype), question->QuestionContext);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the original question timed out, its QuestionContext would already be set to NULL and that's what we copied above.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Hence, we need to set it explicitly here.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (err) LogMsg("%3d: ERROR: queryrecord_result_callback %##s %s mDNS_StartQuery: %d", req->sd, question->qname.c, DNSTypeName(question->qtype), (int)err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we got a positive response to local SOA, then try the .local question as unicast
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (answer->RecordType != kDNSRecordTypePacketNegative) return;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Fall through and get the next search domain. The question is pointing at .local
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // and we don't want to try that. Try the next search domain. Don't try with local
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // search domains for the unicast question anymore.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: we started the question above which will be stopped immediately (never sent on the wire)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // before we pick the next search domain below. RetryQuestionWithSearchDomains assumes that the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // question has already started.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (q && AddRecord && AddRecord != QC_dnssec && (question->InterfaceID == mDNSInterface_Unicast) && !answer->rdlength)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we get a negative response to the unicast query that we sent above, retry after appending search domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: We could have appended search domains below (where do it for regular unicast questions) instead of doing it here.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // As we ignore negative unicast answers below, we would never reach the code where the search domains are appended.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // To keep things simple, we handle unicast ".local" separately here.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_result_callback: Retrying .local question %##s (%s) as unicast after appending search domains", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (RetryQuestionWithSearchDomains(m, question, req, AddRecord))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (question->AppendSearchDomains && !question->AppendLocalSearchDomains && IsLocalDomain(&question->qname))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If "local" is the last search domain, we need to stop the question so that we don't send the "local"
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // question on the wire as we got a negative response for the local SOA. But, we can't stop the question
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // yet as we may have to timeout the question (done by the "core") for which we need to leave the question
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // in the list. We leave it disabled so that it does not hit the wire.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_result_callback: Disabling .local question %##s (%s)", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we are here it means that either "question" is not "q2" OR we got a positive response for "q2" OR we have no more search
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // domains to append for "q2". In all cases, fall through and deliver the response
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If a query is being suppressed for some reason, we don't have to do any other
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // processing.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: We don't check for "SuppressQuery" and instead use QC_suppressed because
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // the "core" needs to temporarily turn off SuppressQuery to answer this query.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_result_callback: Suppressed question %##s (%s)", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome queryrecord_result_reply(m, req, question, answer, AddRecord, kDNSServiceErr_NoSuchRecord);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (answer->RecordType == kDNSRecordTypePacketNegative)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If this question needs to be timed out and we have reached the stop time, mark
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // the error as timeout. It is possible that we might get a negative response from an
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // external DNS server at the same time when this question reaches its stop time. We
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // can't tell the difference as there is no indication in the callback. This should
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // be okay as we will be timing out this query anyway.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_result_callback:Question %##s (%s) timing out, InterfaceID %p", question->qname.c, DNSTypeName(question->qtype), question->InterfaceID);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // When we're doing parallel unicast and multicast queries for dot-local names (for supporting Microsoft
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Active Directory sites) we need to ignore negative unicast answers. Otherwise we'll generate negative
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // answers for just about every single multicast name we ever look up, since the Microsoft Active Directory
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // server is going to assert that pretty much every single multicast name doesn't exist.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we are timing out this query, we need to deliver the negative answer to the application
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!answer->InterfaceID && IsLocalDomain(answer->name))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Sanity check: "q" will be set only if "question" is the .local unicast query.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("queryrecord_result_callback: ERROR!! answering multicast question %s with unicast cache record",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!ShouldDeliverNegativeResponse(m, question))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_result_callback:Question %##s (%s) answering local with negative unicast response", question->qname.c,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we get a negative answer, try appending search domains. Don't append search domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // - if we are timing out this question
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // - if the negative response was received as a result of a multicast query
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // - if this is an additional query (q2), we already appended search domains above (indicated by "!q" below)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // - if this response is forced e.g., dnssec validation result
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!q && !answer->InterfaceID && !answer->rdlength && AddRecord && AddRecord != QC_dnssec)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the original question did not end in .local, we did not send an SOA query
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to figure out whether we should send an additional unicast query or not. If we just
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // appended .local, we need to see if we need to send an additional query. This should
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // normally happen just once because after we append .local, we ignore all negative
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // responses for .local above.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_result_callback: Retrying question %##s (%s) after appending search domains", question->qname.c, DNSTypeName(question->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (RetryQuestionWithSearchDomains(m, question, req, AddRecord))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: We need to call SendAdditionalQuery every time after appending a search domain as .local could
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // be anywhere in the search domain list.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (err) LogMsg("queryrecord_result_callback: Sending .local SOA query failed, after appending domains");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome queryrecord_result_reply(m, req, question, answer, AddRecord, error);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void queryrecord_termination_callback(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceQueryRecord(%##s, %s) STOP PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->sd, request->u.queryrecord.q.qname.c, DNSTypeName(request->u.queryrecord.q.qtype), request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, &request->u.queryrecord.q); // no need to error check
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, &request->u.queryrecord.q, request, q_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.queryrecord.q.QuestionContext = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSQuestion *question = &request->u.queryrecord.q;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_termination_callback: question %##s (%s) already stopped, InterfaceID %p", question->qname.c, DNSTypeName(question->qtype), question->InterfaceID);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("QueryTermination", request->u.queryrecord.q.qnameOrig);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (callExternalHelpers(request->u.queryrecord.q.InterfaceID, &request->u.queryrecord.q.qname, request->flags))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_termination_callback: calling external_stop_browsing_for_service()");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_stop_browsing_for_service(request->u.queryrecord.q.InterfaceID, &request->u.queryrecord.q.qname, request->u.queryrecord.q.qtype, request->flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.queryrecord.q2->QuestionContext)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_termination_callback: Stopping q2 %##s", request->u.queryrecord.q2->qname.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, request->u.queryrecord.q2);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, request->u.queryrecord.q2, request, q_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSQuestion *question = request->u.queryrecord.q2;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_termination_callback: q2 %##s (%s) already stopped, InterfaceID %p", question->qname.c, DNSTypeName(question->qtype), question->InterfaceID);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("queryrecord_termination_callback: freeing q2 qnameOrig %##s", request->u.queryrecord.q2->qnameOrig->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("QueryTermination q2", request->u.queryrecord.q2->qnameOrig);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.queryrecord.q2->qnameOrig = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("queryrecord Q2", request->u.queryrecord.q2);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we are receiving poisitive answers, provide the hint to the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // upper layer.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.queryrecord.q.qtype == kDNSType_A)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (request->u.queryrecord.q.qtype == kDNSType_AAAA)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformTriggerDNSRetry(&mDNSStorage, v4q, v6q);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void SetQuestionPolicy(DNSQuestion *q, request_state *req)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // The policy is either based on pid or UUID. Pass a zero pid
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to the "core" if the UUID is valid. If we always pass the pid,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // then the "core" needs to determine whether the uuid is valid
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // by examining all the 16 bytes at the time of the policy
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // check and also when setting the delegate socket option. Also, it
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // requires that we zero out the uuid wherever the question is
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // initialized to make sure that it is not interpreted as valid.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // To prevent these intrusive changes, just pass a zero pid to indicate
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // that pid is not valid when uuid is valid. In future if we need the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // pid in the question, we will reevaluate this strategy.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (i = 0; i < UUID_SIZE; i++)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome //debugf("SetQuestionPolicy: q->euid[%d] q->pid[%d] uuid is valid : %s", q->euid, q->pid, req->validUUID ? "true" : "false");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_queryrecord_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSQuestion *const q = &request->u.queryrecord.q;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 interfaceIndex = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSInterfaceID InterfaceID = mDNSPlatformInterfaceIDfromInterfaceIndex(&mDNSStorage, interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // The request is scoped to a specific interface index, but the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // interface is not currently in our list.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If it's one of the specially defined inteface index values, just return an error.
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // Also, caller should return an error immediately if lo0 (index 1) is not configured
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // into the current active interfaces. See background in Radar 21967160.
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome if (PreDefinedInterfaceIndex(interfaceIndex) || interfaceIndex == 1)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogInfo("handle_queryrecord_request: bad interfaceIndex %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Otherwise, use the specified interface index value and the request will
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // be applied to that interface when it comes up.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome InterfaceID = (mDNSInterfaceID)(uintptr_t)interfaceIndex;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("handle_queryrecord_request: query pending for interface index %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (get_string(&request->msgptr, request->msgend, name, 256) < 0) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rrtype = get_uint16(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rrclass = get_uint16(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: DNSServiceQueryRecord(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemZero(&request->u.queryrecord, sizeof(request->u.queryrecord));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&q->qname, name)) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!AuthorizedDomain(request, &q->qname, AutoBrowseDomains)) return (mStatus_NoError);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->LongLived = (flags & kDNSServiceFlagsLongLivedQuery ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->ForceMCast = (flags & kDNSServiceFlagsForceMulticast ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->ReturnIntermed = (flags & kDNSServiceFlagsReturnIntermediates) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->SuppressUnusable = (flags & kDNSServiceFlagsSuppressUnusable ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->TimeoutQuestion = (flags & kDNSServiceFlagsTimeout ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->UseBackgroundTrafficClass = (flags & kDNSServiceFlagsBackgroundTrafficClass) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->DenyOnCellInterface = (flags & kDNSServiceFlagsDenyCellular) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->DenyOnExpInterface = (flags & kDNSServiceFlagsDenyExpensive) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->ValidationRequired = DNSSEC_VALIDATION_SECURE;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if ((flags & kDNSServiceFlagsValidateOptional) != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->ValidationRequired = DNSSEC_VALIDATION_SECURE_OPTIONAL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->QuestionCallback = queryrecord_result_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome //Turn off dnssec validation for local domains and Question Types: RRSIG/ANY(ANY Type is not supported yet)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((IsLocalDomain(&q->qname)) || (q->qtype == kDNSServiceType_RRSIG) || (q->qtype == kDNSServiceType_ANY))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Don't append search domains for fully qualified domain names including queries
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // such as e.g., "abc." that has only one label. We convert all names to FQDNs as internally
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // we only deal with FQDNs. Hence, we cannot look at qname to figure out whether we should
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // append search domains or not. So, we record that information in AppendSearchDomains.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We append search domains only for queries that are a single label. If overriden using command line
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // argument "AlwaysAppendSearchDomains", then we do it for any query which is not fully qualified.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For DNSSEC questions, append search domains only if kDNSServiceFlagsValidateOptional is set.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((!(q->ValidationRequired == DNSSEC_VALIDATION_SECURE)) && (!(q->ValidationRequired == DNSSEC_VALIDATION_INSECURE))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome && (rrtype == kDNSType_A || rrtype == kDNSType_AAAA) && name[strlen(name) - 1] != '.' &&
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (AlwaysAppendSearchDomains || CountLabels(&q->qname) == 1))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For single label queries that are not fully qualified, look at /etc/hosts, cache and try
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // search domains before trying them on the wire as a single label query. RetryWithSearchDomains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // tell the core to call back into the UDS layer if there is no valid response in /etc/hosts or
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // the cache
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->RetryWithSearchDomains = ApplySearchDomainsFirst(q) ? 1 : 0;
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogOperation("%3d: DNSServiceQueryRecord(%X, %d, %##s, %s) START PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->sd, flags, interfaceIndex, q->qname.c, DNSTypeName(q->qtype), request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: ERROR: DNSServiceQueryRecord %##s %s mDNS_StartQuery: %d", request->sd, q->qname.c, DNSTypeName(q->qtype), (int)err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->terminate = queryrecord_termination_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (callExternalHelpers(q->InterfaceID, &q->qname, flags))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("handle_queryrecord_request: calling external_start_browsing_for_service()");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome external_start_browsing_for_service(q->InterfaceID, &q->qname, q->qtype, flags);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal reply_state *format_enumeration_reply(request_state *request,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const char *domain, DNSServiceFlags flags, mDNSu32 ifi, DNSServiceErrorType err)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome reply = create_reply(enumeration_reply_op, len, request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void enum_termination_callback(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Stop the domain enumeration queries to discover the WAB Browse/Registration domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.enumeration.flags & kDNSServiceFlagsRegistrationDomains)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("%3d: DNSServiceEnumeration Cancel WAB Registration PID[%d](%s)", request->sd, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome uDNS_StopWABQueries(&mDNSStorage, UDNS_WAB_REG_QUERY);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("%3d: DNSServiceEnumeration Cancel WAB Browse PID[%d](%s)", request->sd, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome uDNS_StopWABQueries(&mDNSStorage, UDNS_WAB_BROWSE_QUERY);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopGetDomains(&mDNSStorage, &request->u.enumeration.q_all);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopGetDomains(&mDNSStorage, &request->u.enumeration.q_default);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void enum_result_callback(mDNS *const m,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSQuestion *const question, const ResourceRecord *const answer, QC_result AddRecord)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request_state *request = question->QuestionContext;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (void)m; // Unused
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!AuthorizedDomain(request, &answer->rdata->u.name, request->u.enumeration.flags ? AutoRegistrationDomains : AutoBrowseDomains)) return;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We only return add/remove events for the browse and registration lists
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For the default browse and registration answers, we only give an "ADD" event
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (question == &request->u.enumeration.q_default && !AddRecord) return;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (question == &request->u.enumeration.q_default) flags |= kDNSServiceFlagsDefault;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ConvertDomainNameToCString(&answer->rdata->u.name, domain);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note that we do NOT propagate specific interface indexes to the client - for example, a domain we learn from
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // a machine's system preferences may be discovered on the LocalOnly interface, but should be browsed on the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // network, so we just pass kDNSServiceInterfaceIndexAny
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome reply = format_enumeration_reply(request, domain, flags, kDNSServiceInterfaceIndexAny, kDNSServiceErr_NoError);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!reply) { LogMsg("ERROR: enum_result_callback, format_enumeration_reply"); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceEnumerateDomains(%#2s) RESULT %s: %s", request->sd, question->qname.c, AddRecord ? "Add" : "Rmv", domain);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_enum_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags reg = flags & kDNSServiceFlagsRegistrationDomains;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_DomainType t_all = reg ? mDNS_DomainTypeRegistration : mDNS_DomainTypeBrowse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_DomainType t_default = reg ? mDNS_DomainTypeRegistrationDefault : mDNS_DomainTypeBrowseDefault;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 interfaceIndex = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSInterfaceID InterfaceID = mDNSPlatformInterfaceIDfromInterfaceIndex(&mDNSStorage, interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (interfaceIndex && !InterfaceID) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: DNSServiceEnumerateDomains(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // mark which kind of enumeration we're doing so that we know what domain enumeration queries to stop
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // enumeration requires multiple questions, so we must link all the context pointers so that
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // necessary context can be reached from the callbacks
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.enumeration.q_all.QuestionContext = request;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.enumeration.q_default.QuestionContext = request;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // if the caller hasn't specified an explicit interface, we use local-only to get the system-wide list.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!InterfaceID) InterfaceID = mDNSInterface_LocalOnly;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // make the calls
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceEnumerateDomains(%X=%s)", request->sd, flags,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (flags & kDNSServiceFlagsBrowseDomains ) ? "kDNSServiceFlagsBrowseDomains" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (flags & kDNSServiceFlagsRegistrationDomains) ? "kDNSServiceFlagsRegistrationDomains" : "<<Unknown>>");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_GetDomains(&mDNSStorage, &request->u.enumeration.q_all, t_all, NULL, InterfaceID, enum_result_callback, request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_GetDomains(&mDNSStorage, &request->u.enumeration.q_default, t_default, NULL, InterfaceID, enum_result_callback, request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (err) mDNS_StopGetDomains(&mDNSStorage, &request->u.enumeration.q_all);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else request->terminate = enum_termination_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Start the domain enumeration queries to discover the WAB Browse/Registration domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("%3d: DNSServiceEnumerateDomains Start WAB Registration PID[%d](%s)", request->sd, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome uDNS_StartWABQueries(&mDNSStorage, UDNS_WAB_REG_QUERY);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("%3d: DNSServiceEnumerateDomains Start WAB Browse PID[%d](%s)", request->sd, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome uDNS_StartWABQueries(&mDNSStorage, UDNS_WAB_BROWSE_QUERY);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_reconfirm_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AuthRecord *rr = read_rr_from_ipc_msg(request, 0, 0);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome status = mDNS_ReconfirmByValue(&mDNSStorage, &rr->resrec);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome "%3d: DNSServiceReconfirmRecord(%s) interface %d initiated" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome "%3d: DNSServiceReconfirmRecord(%s) interface %d failed: %d",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->sd, RRDisplayString(&mDNSStorage, &rr->resrec),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformInterfaceIndexfromInterfaceID(&mDNSStorage, rr->resrec.InterfaceID, mDNSfalse), status);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("AuthRecord/handle_reconfirm_request", rr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_release_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char name[256], regtype[MAX_ESCAPED_DOMAIN_NAME], domain[MAX_ESCAPED_DOMAIN_NAME];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // extract the data from the message
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (get_string(&request->msgptr, request->msgend, name, 256) < 0 ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_string(&request->msgptr, request->msgend, regtype, MAX_ESCAPED_DOMAIN_NAME) < 0 ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_string(&request->msgptr, request->msgend, domain, MAX_ESCAPED_DOMAIN_NAME) < 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: handle_release_request - Couldn't read name/regtype/domain");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: PeerConnectionRelease(unreadable parameters)", request->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (build_domainname_from_strings(&instance, name, regtype, domain) < 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: handle_release_request bad “%s” “%s” “%s”", name, regtype, domain);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: PeerConnectionRelease(%X %##s) START PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->sd, flags, instance.c, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#else // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_release_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_setdomain_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (get_string(&request->msgptr, request->msgend, domainstr, MAX_ESCAPED_DOMAIN_NAME) < 0 ||
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome !MakeDomainNameFromDNSNameString(&domain, domainstr))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: DNSServiceSetDefaultDomainForUser(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceSetDefaultDomainForUser(%##s)", request->sd, domain.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void handle_getproperty_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const mStatus BadParamErr = dnssd_htonl((mDNSu32)mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (get_string(&request->msgptr, request->msgend, prop, sizeof(prop)) >= 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceGetProperty(%s)", request->sd, prop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!strcmp(prop, kDNSServiceProperty_DaemonVersion))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DaemonVersionReply x = { 0, dnssd_htonl(4), dnssd_htonl(_DNS_SD_H) };
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome send_all(request->sd, (const char *)&x, sizeof(x));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we didn't recogize the requested property name, return BadParamErr
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome send_all(request->sd, (const char *)&BadParamErr, sizeof(BadParamErr));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// The caller can specify either the pid or the uuid. If the pid is not specified,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// update the effective uuid. Don't overwrite the pid which is used for debugging
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// purposes and initialized when the socket is opened.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void handle_connection_delegate_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome pid = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (getsockopt(request->sd, SOL_LOCAL, LOCAL_PEEREPID, &request->process_id, &len) != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to extract the process name from the pid value
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (proc_pidinfo(request->process_id, PROC_PIDT_SHORTBSDINFO, 1, &proc, PROC_PIDT_SHORTBSDINFO_SIZE) == 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformStrCopy(request->pid_name, proc.pbsi_comm);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome debugf("handle_connection_delegate_request: process id %d, name %s", request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (getsockopt(request->sd, SOL_LOCAL, LOCAL_PEEREUUID, request->uuid, &len) != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void handle_connection_delegate_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void handle_getpid_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu16 srcport = get_uint16(&request->msgptr, request->msgend);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsg("%3d: DNSServiceGetPID START", request->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu16 port = mDNSPlatformGetUDPPort(q->LocalSocket);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsg("DNSServiceGetPID: srcport %d, pid %d [%s] question %##s", htons(srcport), pid, req->pid_name, q->qname.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we cannot find in the client requests, look to see if this was
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // started by mDNSResponder.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (q = mDNSStorage.Questions; q; q = q->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu16 port = mDNSPlatformGetUDPPort(q->LocalSocket);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsg("DNSServiceGetPID: srcport %d, pid %d [%s], question %##s", htons(srcport), pid, "_mDNSResponder", q->qname.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome send_all(request->sd, (const char *)&pi, sizeof(PIDInfo));
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsg("%3d: DNSServiceGetPID STOP", request->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#define DNSServiceProtocol(X) ((X) == NATOp_AddrRequest ? 0 : (X) == NATOp_MapUDP ? kDNSServiceProtocol_UDP : kDNSServiceProtocol_TCP)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void port_mapping_termination_callback(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceNATPortMappingCreate(%X, %u, %u, %d) STOP PID[%d](%s)", request->sd,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceProtocol(request->u.pm.NATinfo.Protocol),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSVal16(request->u.pm.NATinfo.IntPort), mDNSVal16(request->u.pm.ReqExt), request->u.pm.NATinfo.NATLease,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopNATOperation(&mDNSStorage, &request->u.pm.NATinfo);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Called via function pointer when we get a NAT Traversal (address request or port mapping) response
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void port_mapping_create_request_callback(mDNS *m, NATTraversalInfo *n)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request_state *request = (request_state *)n->clientContext;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request) { LogMsg("port_mapping_create_request_callback called with unknown request_state object"); return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // calculate reply data length
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome replyLen += 3 * sizeof(mDNSu32); // if index + addr + ttl
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome replyLen += 2 * sizeof(mDNSu16); // Internal Port + External Port
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rep = create_reply(port_mapping_reply_op, replyLen, request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rep->rhdr->ifi = dnssd_htonl(mDNSPlatformInterfaceIndexfromInterfaceID(m, n->InterfaceID, mDNSfalse));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *data++ = request->u.pm.NATinfo.ExternalAddress.b[0];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *data++ = request->u.pm.NATinfo.ExternalAddress.b[1];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *data++ = request->u.pm.NATinfo.ExternalAddress.b[2];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *data++ = request->u.pm.NATinfo.ExternalAddress.b[3];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *data++ = DNSServiceProtocol(request->u.pm.NATinfo.Protocol);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *data++ = request->u.pm.NATinfo.ExternalPort.b[0];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *data++ = request->u.pm.NATinfo.ExternalPort.b[1];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome put_uint32(request->u.pm.NATinfo.Lifetime, &data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceNATPortMappingCreate(%X, %u, %u, %d) RESULT %.4a:%u TTL %u", request->sd,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceProtocol(request->u.pm.NATinfo.Protocol),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSVal16(request->u.pm.NATinfo.IntPort), mDNSVal16(request->u.pm.ReqExt), request->u.pm.NATinfo.NATLease,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome &request->u.pm.NATinfo.ExternalAddress, mDNSVal16(request->u.pm.NATinfo.ExternalPort), request->u.pm.NATinfo.Lifetime);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_port_mapping_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 interfaceIndex = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSInterfaceID InterfaceID = mDNSPlatformInterfaceIDfromInterfaceIndex(&mDNSStorage, interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu8 protocol = (mDNSu8)get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (interfaceIndex && !InterfaceID) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->msgptr + 8 > request->msgend) request->msgptr = NULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.pm.NATinfo.IntPort.b[0] = *request->msgptr++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.pm.NATinfo.IntPort.b[1] = *request->msgptr++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.pm.ReqExt.b[0] = *request->msgptr++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.pm.ReqExt.b[1] = *request->msgptr++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ttl = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: DNSServiceNATPortMappingCreate(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (protocol == 0) // If protocol == 0 (i.e. just request public address) then IntPort, ExtPort, ttl must be zero too
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!mDNSIPPortIsZero(request->u.pm.NATinfo.IntPort) || !mDNSIPPortIsZero(request->u.pm.ReqExt) || ttl) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNSIPPortIsZero(request->u.pm.NATinfo.IntPort)) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!(protocol & (kDNSServiceProtocol_UDP | kDNSServiceProtocol_TCP))) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.pm.NATinfo.Protocol = !protocol ? NATOp_AddrRequest : (protocol == kDNSServiceProtocol_UDP) ? NATOp_MapUDP : NATOp_MapTCP;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // u.pm.NATinfo.IntPort = already set above
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.pm.NATinfo.RequestedPort = request->u.pm.ReqExt;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.pm.NATinfo.clientCallback = port_mapping_create_request_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceNATPortMappingCreate(%X, %u, %u, %d) START PID[%d](%s)", request->sd,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome protocol, mDNSVal16(request->u.pm.NATinfo.IntPort), mDNSVal16(request->u.pm.ReqExt), request->u.pm.NATinfo.NATLease,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_StartNATOperation(&mDNSStorage, &request->u.pm.NATinfo);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (err) LogMsg("ERROR: mDNS_StartNATOperation: %d", (int)err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else request->terminate = port_mapping_termination_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void addrinfo_termination_callback(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceGetAddrInfo(%##s) STOP PID[%d](%s)", request->sd, request->u.addrinfo.q4.qname.c,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, &request->u.addrinfo.q4);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, &request->u.addrinfo.q4, request, q_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.QuestionContext = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("QueryTermination", request->u.addrinfo.q4.qnameOrig);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("addrinfo_termination_callback: Stopping q42 %##s", request->u.addrinfo.q42->qname.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, request->u.addrinfo.q42);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, request->u.addrinfo.q42, request, q_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("addrinfo_termination_callback: freeing q42 qnameOrig %##s", request->u.addrinfo.q42->qnameOrig->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("QueryTermination q42", request->u.addrinfo.q42->qnameOrig);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("addrinfo Q42", request->u.addrinfo.q42);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, &request->u.addrinfo.q6);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, &request->u.addrinfo.q6, request, q_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.QuestionContext = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("QueryTermination", request->u.addrinfo.q6.qnameOrig);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("addrinfo_termination_callback: Stopping q62 %##s", request->u.addrinfo.q62->qname.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, request->u.addrinfo.q62);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, request->u.addrinfo.q62, request, q_stop);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("addrinfo_termination_callback: freeing q62 qnameOrig %##s", request->u.addrinfo.q62->qnameOrig->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("QueryTermination q62", request->u.addrinfo.q62->qnameOrig);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome freeL("addrinfo Q62", request->u.addrinfo.q62);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.addrinfo.protocol & kDNSServiceProtocol_IPv4)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we are not delivering answers, we may be timing out prematurely.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note down the current state so that we know to retry when we see a
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // valid response again.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.addrinfo.q4.TimeoutQuestion && !request->u.addrinfo.v4ans)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformUpdateDNSStatus(&mDNSStorage, &request->u.addrinfo.q4);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we have a v4 answer and if we timed out prematurely before, provide
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // a trigger to the upper layer so that it can retry questions if needed.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.addrinfo.protocol & kDNSServiceProtocol_IPv6)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.addrinfo.q6.TimeoutQuestion && !request->u.addrinfo.v6ans)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformUpdateDNSStatus(&mDNSStorage, &request->u.addrinfo.q6);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformTriggerDNSRetry(&mDNSStorage, v4q, v6q);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mStatus handle_addrinfo_request(request_state *request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSs32 serviceIndex = -1; // default unscoped value for ServiceID is -1
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSServiceFlags flags = get_flags(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 interfaceIndex = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // NOTE: kDNSServiceFlagsServiceIndex flag can only be set for DNSServiceGetAddrInfo()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSServiceGetAddrInfo: kDNSServiceFlagsServiceIndex is SET by the client");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // if kDNSServiceFlagsServiceIndex is SET,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // interpret the interfaceID as the serviceId and set the interfaceID to 0.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemZero(&request->u.addrinfo, sizeof(request->u.addrinfo));
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome InterfaceID = mDNSPlatformInterfaceIDfromInterfaceIndex(&mDNSStorage, interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // The request is scoped to a specific interface index, but the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // interface is not currently in our list.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If it's one of the specially defined inteface index values, just return an error.
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogInfo("handle_addrinfo_request: bad interfaceIndex %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Otherwise, use the specified interface index value and the registration will
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // be applied to that interface when it comes up.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome InterfaceID = (mDNSInterfaceID)(uintptr_t)interfaceIndex;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("handle_addrinfo_request: query pending for interface index %d", interfaceIndex);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.interface_id = InterfaceID;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.protocol = get_uint32(&request->msgptr, request->msgend);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.addrinfo.protocol > (kDNSServiceProtocol_IPv4|kDNSServiceProtocol_IPv6)) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (get_string(&request->msgptr, request->msgend, hostname, 256) < 0) return(mStatus_BadParamErr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!request->msgptr) { LogMsg("%3d: DNSServiceGetAddrInfo(unreadable parameters)", request->sd); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!MakeDomainNameFromDNSNameString(&d, hostname))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("ERROR: handle_addrinfo_request: bad hostname: %s", hostname); return(mStatus_BadParamErr); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!AuthorizedDomain(request, &d, AutoBrowseDomains)) return (mStatus_NoError);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.protocol = (kDNSServiceProtocol_IPv4 | kDNSServiceProtocol_IPv6);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.InterfaceID = request->u.addrinfo.q6.InterfaceID = request->u.addrinfo.interface_id;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.ServiceID = request->u.addrinfo.q6.ServiceID = serviceIndex;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.flags = request->u.addrinfo.q6.flags = flags;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.Target = request->u.addrinfo.q6.Target = zeroAddr;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.qname = request->u.addrinfo.q6.qname = d;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.qclass = request->u.addrinfo.q6.qclass = kDNSServiceClass_IN;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.LongLived = request->u.addrinfo.q6.LongLived = (flags & kDNSServiceFlagsLongLivedQuery ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.ExpectUnique = request->u.addrinfo.q6.ExpectUnique = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.ForceMCast = request->u.addrinfo.q6.ForceMCast = (flags & kDNSServiceFlagsForceMulticast ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.ReturnIntermed = request->u.addrinfo.q6.ReturnIntermed = (flags & kDNSServiceFlagsReturnIntermediates) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.SuppressUnusable = request->u.addrinfo.q6.SuppressUnusable = (flags & kDNSServiceFlagsSuppressUnusable ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.TimeoutQuestion = request->u.addrinfo.q6.TimeoutQuestion = (flags & kDNSServiceFlagsTimeout ) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.WakeOnResolve = request->u.addrinfo.q6.WakeOnResolve = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.UseBackgroundTrafficClass = request->u.addrinfo.q6.UseBackgroundTrafficClass = (flags & kDNSServiceFlagsBackgroundTrafficClass) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.DenyOnCellInterface = request->u.addrinfo.q6.DenyOnCellInterface = (flags & kDNSServiceFlagsDenyCellular) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.DenyOnExpInterface = request->u.addrinfo.q6.DenyOnExpInterface = (flags & kDNSServiceFlagsDenyExpensive) != 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.ValidationRequired = request->u.addrinfo.q6.ValidationRequired = DNSSEC_VALIDATION_SECURE;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if ((flags & kDNSServiceFlagsValidateOptional) != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.ValidationRequired = request->u.addrinfo.q6.ValidationRequired = DNSSEC_VALIDATION_SECURE_OPTIONAL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.ValidatingResponse = request->u.addrinfo.q6.ValidatingResponse = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.ProxyQuestion = request->u.addrinfo.q6.ProxyQuestion = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.qnameOrig = request->u.addrinfo.q6.qnameOrig = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.AnonInfo = request->u.addrinfo.q6.AnonInfo = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome SetQuestionPolicy(&request->u.addrinfo.q4, request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome SetQuestionPolicy(&request->u.addrinfo.q6, request);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.DNSSECAuthInfo = request->u.addrinfo.q6.DNSSECAuthInfo = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.DAIFreeCallback = request->u.addrinfo.q6.DAIFreeCallback = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome //Turn off dnssec validation for local domains
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.ValidationRequired = request->u.addrinfo.q6.ValidationRequired = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.addrinfo.protocol & kDNSServiceProtocol_IPv6)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.qtype = kDNSServiceType_AAAA;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For DNSSEC questions, append search domains only if kDNSServiceFlagsValidateOptional is set
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((!(request->u.addrinfo.q6.ValidationRequired == DNSSEC_VALIDATION_SECURE)) && (!(request->u.addrinfo.q6.ValidationRequired == DNSSEC_VALIDATION_INSECURE))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome && hostname[strlen(hostname) - 1] != '.' && (AlwaysAppendSearchDomains || CountLabels(&d) == 1))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.AppendSearchDomains = 1;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.AppendLocalSearchDomains = 1;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.AppendSearchDomains = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.AppendLocalSearchDomains = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.RetryWithSearchDomains = (ApplySearchDomainsFirst(&request->u.addrinfo.q6) ? 1 : 0);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.QuestionCallback = queryrecord_result_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.QuestionContext = request;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_StartQuery(&mDNSStorage, &request->u.addrinfo.q6);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: mDNS_StartQuery: %d", (int)err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.QuestionContext = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = SendAdditionalQuery(&request->u.addrinfo.q6, request, err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome #endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->terminate = addrinfo_termination_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, &request->u.addrinfo.q6, request, q_start);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!err && (request->u.addrinfo.protocol & kDNSServiceProtocol_IPv4))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.qtype = kDNSServiceType_A;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We append search domains only for queries that are a single label. If overriden using cmd line arg
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // "AlwaysAppendSearchDomains", then we do it for any query which is not fully qualified.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For DNSSEC questions, append search domains only if kDNSServiceFlagsValidateOptional is set.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((!(request->u.addrinfo.q4.ValidationRequired == DNSSEC_VALIDATION_SECURE)) && (!(request->u.addrinfo.q4.ValidationRequired == DNSSEC_VALIDATION_INSECURE))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome && hostname[strlen(hostname) - 1] != '.' && (AlwaysAppendSearchDomains || CountLabels(&d) == 1))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.AppendSearchDomains = 1;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.AppendLocalSearchDomains = 1;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.AppendSearchDomains = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.AppendLocalSearchDomains = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.RetryWithSearchDomains = (ApplySearchDomainsFirst(&request->u.addrinfo.q4) ? 1 : 0);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.QuestionCallback = queryrecord_result_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.QuestionContext = request;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_StartQuery(&mDNSStorage, &request->u.addrinfo.q4);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: mDNS_StartQuery: %d", (int)err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q4.QuestionContext = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (request->u.addrinfo.protocol & kDNSServiceProtocol_IPv6)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we started a query for IPv6, we need to cancel it
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_StopQuery(&mDNSStorage, &request->u.addrinfo.q6);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->u.addrinfo.q6.QuestionContext = mDNSNULL;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = SendAdditionalQuery(&request->u.addrinfo.q4, request, err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome #endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome request->terminate = addrinfo_termination_callback;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastQ(&mDNSStorage, &request->u.addrinfo.q4, request, q_start);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogOperation("%3d: DNSServiceGetAddrInfo(%X, %d, %d, %##s) START PID[%d](%s)", request->sd, flags, interfaceIndex, request->u.addrinfo.protocol, d.c, request->process_id, request->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// ***************************************************************************
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome *p = mallocL("request_state", sizeof(request_state));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemZero(*p, sizeof(request_state));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// read_msg may be called any time when the transfer state (req->ts) is t_morecoming.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// if there is no data on the socket, the socket will be closed and t_terminated will be returned
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->ts == t_terminated || req->ts == t_error)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: ERROR: read_msg called with transfer state terminated or error", req->sd); req->ts = t_error; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->ts == t_complete) // this must be death or something is wrong
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int nread = udsSupportReadFD(req->sd, buf, 4, 0, req->platform_data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!nread) { req->ts = t_terminated; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: ERROR: read data from a completed request", req->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: ERROR: read_msg called with invalid transfer state (%d)", req->sd, req->ts); req->ts = t_error; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 nleft = sizeof(ipc_msg_hdr) - req->hdr_bytes;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome int nread = udsSupportReadFD(req->sd, (char *)&req->hdr + req->hdr_bytes, nleft, 0, req->platform_data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (nread == 0) { req->ts = t_terminated; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: ERROR: read_msg - read too many header bytes", req->sd); req->ts = t_error; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // only read data if header is complete
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: ERROR: client version 0x%08X daemon version 0x%08X", req->sd, req->hdr.version, VERSION); req->ts = t_error; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Largest conceivable single request is a DNSServiceRegisterRecord() or DNSServiceAddRecord()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // with 64kB of rdata. Adding 1009 byte for a maximal domain name, plus a safety margin
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // for other overhead, this means any message above 70kB is definitely bogus.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: ERROR: read_msg: hdr.datalen %u (0x%X) > 70000", req->sd, req->hdr.datalen, req->hdr.datalen); req->ts = t_error; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->msgbuf = mallocL("request_state msgbuf", req->hdr.datalen + MSG_PAD_BYTES);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!req->msgbuf) { my_perror("ERROR: malloc"); req->ts = t_error; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemZero(req->msgbuf, req->hdr.datalen + MSG_PAD_BYTES);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If our header is complete, but we're still needing more body data, then try to read it now
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: For cancel_request req->hdr.datalen == 0, but there's no error return socket for cancel_request
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Any time we need to get the error return socket we know we'll have at least one data byte
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // (even if only the one-byte empty C string placeholder for the old ctrl_path parameter)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->hdr_bytes == sizeof(ipc_msg_hdr) && req->data_bytes < req->hdr.datalen)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 nleft = req->hdr.datalen - req->data_bytes;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome struct iovec vec = { req->msgbuf + req->data_bytes, nleft }; // Tell recvmsg where we want the bytes put
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char cbuf[CMSG_SPACE(4 * sizeof(dnssd_sock_t))];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome nread = udsSupportReadFD(req->sd, (char *)req->msgbuf + req->data_bytes, nleft, 0, req->platform_data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (nread == 0) { req->ts = t_terminated; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: ERROR: read_msg - read too many data bytes", req->sd); req->ts = t_error; return; }
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsg("%3d: Expecting %d %d %d %d", req->sd, sizeof(cbuf), sizeof(cbuf), SOL_SOCKET, SCM_RIGHTS);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsg("%3d: Got %d %d %d %d", req->sd, msg.msg_controllen, cmsg ? cmsg->cmsg_len : -1, cmsg ? cmsg->cmsg_level : -1, cmsg ? cmsg->cmsg_type : -1);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // DEBUG_64BIT_SCM_RIGHTS
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome if (cmsg && cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Strictly speaking BPF_fd belongs solely in the platform support layer, but because
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // of privilege separation on Mac OS X we need to get BPF_fd from mDNSResponderHelper,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // and it's convenient to repurpose the existing fd-passing code here for that task
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome dnssd_sock_t x = *(dnssd_sock_t *)CMSG_DATA(cmsg);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: Got len %d, BPF %d", req->sd, cmsg->cmsg_len, x);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: read req->errsd %d", req->sd, req->errsd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // DEBUG_64BIT_SCM_RIGHTS
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsg("%3d: Client(PID [%d](%s)) sent result code socket %d via SCM_RIGHTS with req->data_bytes %d < req->hdr.datalen %d",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->sd, req->process_id, req->pid_name, req->errsd, req->data_bytes, req->hdr.datalen);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If our header and data are both complete, see if we need to make our separate error return socket
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->hdr_bytes == sizeof(ipc_msg_hdr) && req->data_bytes == req->hdr.datalen)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->terminate && req->hdr.op != cancel_request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome cliaddr.sin_addr.s_addr = inet_addr(MDNS_TCP_SERVERADDR);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome get_string(&req->msgptr, req->msgend, ctrl_path, MAX_CTLPATH); // path is first element in message buffer
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformMemZero(&cliaddr, sizeof(cliaddr));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformStrCopy(cliaddr.sun_path, ctrl_path);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the error return path UDS name is empty string, that tells us
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // that this is a new version of the library that's going to pass us
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // the error return path socket via sendmsg/recvmsg
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("%3d: read_msg: ERROR failed to get errsd via SCM_RIGHTS", req->sd); req->ts = t_error; return; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (connect(req->errsd, (struct sockaddr *)&cliaddr, sizeof(cliaddr)) < 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: read_msg: Couldn't connect to error return path socket “%s” errno %d (%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->sd, cliaddr.sun_path, dnssd_errno, dnssd_strerror(dnssd_errno));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: read_msg: stat failed “%s” errno %d (%s)", req->sd, cliaddr.sun_path, dnssd_errno, dnssd_strerror(dnssd_errno));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: read_msg: file “%s” mode %o (octal) uid %d gid %d", req->sd, cliaddr.sun_path, sb.st_mode, sb.st_uid, sb.st_gid);
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogOperation("%3d: Result code socket %d created %08X %08X", req->sd, req->errsd, req->hdr.client_context.u32[1], req->hdr.client_context.u32[0]);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (ioctlsocket(req->errsd, FIONBIO, &opt) != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (fcntl(req->errsd, F_SETFL, fcntl(req->errsd, F_GETFL, 0) | O_NONBLOCK) != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: ERROR: could not set control socket to non-blocking mode errno %d (%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->sd, dnssd_errno, dnssd_strerror(dnssd_errno));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (dnssd_errno == dnssd_EWOULDBLOCK || dnssd_errno == dnssd_EINTR) return;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: ERROR: read_msg errno %d (%s)", req->sd, dnssd_errno, dnssd_strerror(dnssd_errno));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ((X) == reg_record_request || (X) == add_record_request || (X) == update_record_request || (X) == remove_record_request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// The lightweight operations are the ones that don't need a dedicated request_state structure allocated for them
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#define LightweightOp(X) (RecordOrientedOp(X) || (X) == cancel_request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void request_callback(int fd, short filter, void *info)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->ts == t_terminated || req->ts == t_error)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("request_callback: req->ts %d != t_complete PID[%d][%s]", req->ts, req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("request_callback: ERROR: client IPC version %d incompatible with daemon IPC version %d PID[%d][%s]",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->hdr.version, VERSION, req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case connection_delegate_request: min_size = 4; /* pid */ break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case reg_service_request: min_size += sizeof(mDNSu32) + 4 /* name, type, domain, host */ + 4 /* port, textlen */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case add_record_request: min_size += 4 /* type, rdlen */ + 4 /* ttl */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case update_record_request: min_size += 2 /* rdlen */ + 4 /* ttl */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case browse_request: min_size += sizeof(mDNSu32) + 2 /* type, domain */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case resolve_request: min_size += sizeof(mDNSu32) + 3 /* type, type, domain */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case query_request: min_size += sizeof(mDNSu32) + 1 /* name */ + 4 /* type, class*/; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case enumeration_request: min_size += sizeof(mDNSu32); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case reg_record_request: min_size += sizeof(mDNSu32) + 1 /* name */ + 6 /* type, class, rdlen */ + 4 /* ttl */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case reconfirm_record_request: min_size += sizeof(mDNSu32) + 1 /* name */ + 6 /* type, class, rdlen */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case setdomain_request: min_size += 1 /* domain */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case port_mapping_request: min_size += sizeof(mDNSu32) + 4 /* udp/tcp */ + 4 /* int/ext port */ + 4 /* ttl */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case addrinfo_request: min_size += sizeof(mDNSu32) + 4 /* v4/v6 */ + 1 /* hostname */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case release_request: min_size += sizeof(mDNSu32) + 3 /* type, type, domain */; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome default: LogMsg("request_callback: ERROR: validate_message - unsupported req type: %d PID[%d][%s]",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("request_callback: Invalid message %d bytes; min for %d is %d PID[%d][%s]",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->data_bytes, req->hdr.op, min_size, req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (LightweightOp(req->hdr.op) && !req->terminate)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("request_callback: Reg/Add/Update/Remove %d require existing connection PID[%d][%s]",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If req->terminate is already set, this means this operation is sharing an existing connection
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->terminate && !LightweightOp(req->hdr.op))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // if the parent request is a delegate connection, copy the
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // relevant bits
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (i = 0; i < UUID_SIZE; i++)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome // Check if the request wants no asynchronous replies.
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome if (req->hdr.ipc_flags & IPC_FLAGS_NOREPLY) req->no_reply = 1;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If we're shutting down, don't allow new client requests
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We do allow "cancel" and "getproperty" during shutdown
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNSStorage.ShutdownTime && req->hdr.op != cancel_request && req->hdr.op != getproperty_request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // These are all operations that have their own first-class request_state object
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceCreateConnection START PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogOperation("%3d: DNSServiceCreateDelegateConnection START PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case resolve_request: err = handle_resolve_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case query_request: err = handle_queryrecord_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case browse_request: err = handle_browse_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case reg_service_request: err = handle_regservice_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case enumeration_request: err = handle_enum_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case reconfirm_record_request: err = handle_reconfirm_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case setdomain_request: err = handle_setdomain_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case getproperty_request: handle_getproperty_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case getpid_request: handle_getpid_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case port_mapping_request: err = handle_port_mapping_request(req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case addrinfo_request: err = handle_addrinfo_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case send_bpf: /* Do nothing for send_bpf */ break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // These are all operations that work with an existing request_state object
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case reg_record_request: err = handle_regrecord_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case add_record_request: err = handle_add_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case update_record_request: err = handle_update_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case remove_record_request: err = handle_removerecord_request(req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case cancel_request: handle_cancel_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case release_request: err = handle_release_request (req); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome default: LogMsg("request_callback: %3d:ERROR: Unsupported UDS req:%d PID[%d][%s]",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->sd, req->hdr.op, req->process_id, req->pid_name); break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // req->msgbuf may be NULL, e.g. for connection_request or remove_record_request
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->msgbuf) freeL("request_state msgbuf", req->msgbuf);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // There's no return data for a cancel request (DNSServiceRefDeallocate returns no result)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For a DNSServiceGetProperty call, the handler already generated the response, so no need to do it again here
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->hdr.op != cancel_request && req->hdr.op != getproperty_request && req->hdr.op != send_bpf && req->hdr.op != getpid_request)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome send_all(req->errsd, (const char *)&err_netorder, sizeof(err_netorder));
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogOperation("%3d: Result code socket %d closed %08X %08X (%d)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->sd, req->errsd, req->hdr.client_context.u32[1], req->hdr.client_context.u32[0], err);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Also need to reset the parent's errsd, if this is a subordinate operation
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->primary) req->primary->errsd = req->primary->sd;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Reset ready to accept the next req on this pipe
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void connect_callback(int fd, short filter, void *info)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome dnssd_socklen_t len = (dnssd_socklen_t) sizeof(cliaddr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome dnssd_sock_t sd = accept(fd, (struct sockaddr*) &cliaddr, &len);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Some environments (e.g. OS X) support turning off SIGPIPE for a socket
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (setsockopt(sd, SOL_SOCKET, SO_NOSIGPIPE, &optval, sizeof(optval)) < 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: WARNING: setsockopt - SO_NOSIGPIPE %d (%s)", sd, dnssd_errno, dnssd_strerror(dnssd_errno));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (fcntl(sd, F_SETFL, fcntl(sd, F_GETFL, 0) | O_NONBLOCK) != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome my_perror("ERROR: fcntl(sd, F_SETFL, O_NONBLOCK) - aborting client");
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome if (getsockopt(sd, 0, LOCAL_PEERCRED, &x, &xucredlen) >= 0 && x.cr_version == XUCRED_VERSION)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome request->uid = x.cr_uid; // save the effective userid of the client
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome my_perror("ERROR: getsockopt, LOCAL_PEERCRED");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome debugf("LOCAL_PEERCRED %d %u %u %d", xucredlen, x.cr_version, x.cr_uid, x.cr_ngroups);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogOperation("%3d: connect_callback: Adding FD for uid %u", request->sd, request->uid);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome udsSupportAddFDToEventLoop(sd, request_callback, request, &request->platform_data);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal mDNSBool uds_socket_setup(dnssd_sock_t skt)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome socklen_t optlen = sizeof(struct so_np_extensions);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (setsockopt(skt, SOL_SOCKET, SO_NP_EXTENSIONS, &sonpx, optlen) < 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome my_perror("WARNING: could not set sockopt - SO_NP_EXTENSIONS");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // SEH: do we even need to do this on windows?
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // This socket will be given to WSAEventSelect which will automatically set it to non-blocking
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (fcntl(skt, F_SETFL, fcntl(skt, F_GETFL, 0) | O_NONBLOCK) != 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome my_perror("ERROR: could not set listen socket to non-blocking mode");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome my_perror("ERROR: could not listen on listen socket");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mStatus_NoError != udsSupportAddFDToEventLoop(skt, connect_callback, (void *) NULL, (void **) NULL))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome my_perror("ERROR: could not add listen socket to event loop");
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogOperation("%3d: Listening for incoming Unix Domain Socket client requests", skt);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport int udsserver_init(dnssd_sock_t skts[], mDNSu32 count)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("udsserver_init: %d %d", _DNS_SD_H, mDNSStorage.mDNS_plat);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If a particular platform wants to opt out of having a PID file, define PID_FILE to be ""
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (i = 0; i < count; i++)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (dnssd_SocketValid(skts[i]) && !uds_socket_setup(skts[i]))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome my_perror("ERROR: socket(AF_DNSSD, SOCK_STREAM, 0); failed");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome laddr.sin_addr.s_addr = inet_addr(MDNS_TCP_SERVERADDR);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ret = bind(listenfd, (struct sockaddr *) &laddr, sizeof(laddr));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome my_perror("ERROR: bind(listenfd, (struct sockaddr *) &laddr, sizeof(laddr)); failed");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome unlink(MDNS_UDS_SERVERPATH); // OK if this fails
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // According to Stevens (section 3.2), there is no portable way to
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // determine whether sa_len is defined on a particular platform.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (strlen(MDNS_UDS_SERVERPATH) >= sizeof(laddr.sun_path))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("ERROR: MDNS_UDS_SERVERPATH must be < %d characters", (int)sizeof(laddr.sun_path));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformStrCopy(laddr.sun_path, MDNS_UDS_SERVERPATH);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ret = bind(listenfd, (struct sockaddr *) &laddr, sizeof(laddr));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome my_perror("ERROR: bind(listenfd, (struct sockaddr *) &laddr, sizeof(laddr)); failed");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Set maximum number of open file descriptors
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Due to bugs in OS X (<rdar://problem/2941095>, <rdar://problem/3342704>, <rdar://problem/3839173>)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // you have to get and set rlimits once before getrlimit will return sensible values
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (getrlimit(RLIMIT_NOFILE, &maxfds) < 0) { my_perror("ERROR: Unable to get file descriptor limit"); return 0; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (setrlimit(RLIMIT_NOFILE, &maxfds) < 0) my_perror("ERROR: Unable to set maximum file descriptor limit");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (getrlimit(RLIMIT_NOFILE, &maxfds) < 0) { my_perror("ERROR: Unable to get file descriptor limit"); return 0; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome newfds.rlim_max = (maxfds.rlim_max > MIN_OPENFILES) ? maxfds.rlim_max : MIN_OPENFILES;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome newfds.rlim_cur = (maxfds.rlim_cur > MIN_OPENFILES) ? maxfds.rlim_cur : MIN_OPENFILES;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (newfds.rlim_max != maxfds.rlim_max || newfds.rlim_cur != maxfds.rlim_cur)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (setrlimit(RLIMIT_NOFILE, &newfds) < 0) my_perror("ERROR: Unable to set maximum file descriptor limit");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (getrlimit(RLIMIT_NOFILE, &maxfds) < 0) { my_perror("ERROR: Unable to get file descriptor limit"); return 0; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome debugf("maxfds.rlim_max %d", (long)maxfds.rlim_max);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome debugf("maxfds.rlim_cur %d", (long)maxfds.rlim_cur);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We start a "LocalOnly" query looking for Automatic Browse Domain records.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // When Domain Enumeration in uDNS.c finds an "lb" record from the network, its "FoundDomain" routine
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // creates a "LocalOnly" record, which results in our AutomaticBrowseDomainChange callback being invoked
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_GetDomains(&mDNSStorage, &mDNSStorage.AutomaticBrowseDomainQ, mDNS_DomainTypeBrowseAutomatic,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSNULL, mDNSInterface_LocalOnly, AutomaticBrowseDomainChange, mDNSNULL);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Add "local" as recommended registration domain ("dns-sd -E"), recommended browsing domain ("dns-sd -F"), and automatic browsing domain
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome RegisterLocalOnlyDomainEnumPTR(&mDNSStorage, &localdomain, mDNS_DomainTypeRegistration);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome RegisterLocalOnlyDomainEnumPTR(&mDNSStorage, &localdomain, mDNS_DomainTypeBrowse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Cancel all outstanding client requests
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (all_requests) AbortUnlinkAndFree(all_requests);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Clean up any special mDNSInterface_LocalOnly records we created, both the entries for "local" we
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // created in udsserver_init, and others we created as a result of reading local configuration data
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LocalDomainEnumRecords = LocalDomainEnumRecords->next;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the launching environment created no listening socket,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // that means we created it ourselves, so we should clean it up on exit
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Currently, we're unable to remove /var/run/mdnsd because we've changed to userid "nobody"
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // to give up unnecessary privilege, but we need to be root to remove this Unix Domain Socket.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // It would be nice if we could find a solution to this problem
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome debugf("Unable to remove %s", MDNS_UDS_SERVERPATH);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void LogClientInfo(mDNS *const m, request_state *req)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNS_snprintf(prefix, sizeof(prefix), "%3d:", req->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("%s No operation yet on this socket", prefix);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == connection_termination)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (p = req->u.reg_recs; p; p=p->next) num_records++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (r = req->next; r; r=r->next) if (r->primary == req) num_ops++;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("%s DNSServiceCreateConnection: %d registered record%s, %d kDNSServiceFlagsShareConnection operation%s PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome prefix, num_records, num_records != 1 ? "s" : "", num_ops, num_ops != 1 ? "s" : "",
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsgNoIdent(" -> DNSServiceRegisterRecord 0x%08X %2d %3d %s PID[%d](%s)",
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome req->flags, req->interfaceIndex, p->key, ARDisplayString(m, p->rr), req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (r = req->next; r; r=r->next) if (r->primary == req) LogClientInfo(m, r);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == regservice_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ptr = req->u.servicereg.instances; ptr; ptr = ptr->next)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsgNoIdent("%s DNSServiceRegister 0x%08X %2d %##s%s %u/%u PID[%d](%s)",
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome (ptr == req->u.servicereg.instances) ? prefix : " ", req->flags, req->interfaceIndex, ptr->srs.RR_SRV.resrec.name->c,
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome AnonDataToString(ptr->srs.AnonData, 0, anonstr, sizeof(anonstr)), mDNSVal16(req->u.servicereg.port),
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome SRS_PORT(&ptr->srs), req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == browse_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (blist = req->u.browser.browsers; blist; blist = blist->next)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsgNoIdent("%s DNSServiceBrowse 0x%08X %2d %##s%s PID[%d](%s)",
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome (blist == req->u.browser.browsers) ? prefix : " ", req->flags, req->interfaceIndex, blist->q.qname.c,
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome AnonDataToString(req->u.browser.AnonData, 0, anonstr, sizeof(anonstr)), req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == resolve_termination_callback)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsgNoIdent("%s DNSServiceResolve 0x%08X %2d %##s PID[%d](%s)",
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome prefix, req->flags, req->interfaceIndex, req->u.resolve.qsrv.qname.c, req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == queryrecord_termination_callback)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsgNoIdent("%s DNSServiceQueryRecord 0x%08X %2d %##s (%s) PID[%d](%s)",
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome prefix, req->flags, req->interfaceIndex, req->u.queryrecord.q.qname.c, DNSTypeName(req->u.queryrecord.q.qtype), req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == enum_termination_callback)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsgNoIdent("%s DNSServiceEnumerateDomains 0x%08X %2d %##s PID[%d](%s)",
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome prefix, req->flags, req->interfaceIndex, req->u.enumeration.q_all.qname.c, req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == port_mapping_termination_callback)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsgNoIdent("%s DNSServiceNATPortMapping 0x%08X %2d %s%s Int %5d Req %5d Ext %.4a:%5d Req TTL %5d Granted TTL %5d PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->u.pm.NATinfo.Protocol & NATOp_MapTCP ? "TCP" : " ",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->u.pm.NATinfo.Protocol & NATOp_MapUDP ? "UDP" : " ",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == addrinfo_termination_callback)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsgNoIdent("%s DNSServiceGetAddrInfo 0x%08X %2d %s%s %##s PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->u.addrinfo.protocol & kDNSServiceProtocol_IPv4 ? "v4" : " ",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->u.addrinfo.protocol & kDNSServiceProtocol_IPv6 ? "v6" : " ",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->u.addrinfo.q4.qname.c, req->process_id, req->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("%s Unrecognized operation %p", prefix, req->terminate);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void GetMcastClients(request_state *req)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == regservice_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ptr = req->u.servicereg.instances; ptr; ptr = ptr->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == browse_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (blist = req->u.browser.browsers; blist; blist = blist->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == resolve_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((mDNSOpaque16IsZero(req->u.resolve.qsrv.TargetQID)) && (req->u.resolve.qsrv.ThisQInterval > 0))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == queryrecord_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((mDNSOpaque16IsZero(req->u.queryrecord.q.TargetQID)) && (req->u.queryrecord.q.ThisQInterval > 0))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == addrinfo_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((mDNSOpaque16IsZero(req->u.addrinfo.q4.TargetQID)) && (req->u.addrinfo.q4.ThisQInterval > 0))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void LogMcastClientInfo(request_state *req)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("No operation yet on this socket");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == connection_termination)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("R: -> DNSServiceRegisterRecord: %##s %s PID[%d](%s)", p->rr->resrec.name->c,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DNSTypeName(p->rr->resrec.rrtype), req->process_id, req->pid_name, i_mcount++);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == regservice_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ptr = req->u.servicereg.instances; ptr; ptr = ptr->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("R: DNSServiceRegister: %##s %u/%u PID[%d](%s)", ptr->srs.RR_SRV.resrec.name->c, mDNSVal16(req->u.servicereg.port),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome SRS_PORT(&ptr->srs), req->process_id, req->pid_name, i_mcount++);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == browse_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (blist = req->u.browser.browsers; blist; blist = blist->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("Q: DNSServiceBrowse %##s %s PID[%d](%s)", blist->q.qname.c, DNSTypeName(blist->q.qtype),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == resolve_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((mDNSOpaque16IsZero(req->u.resolve.qsrv.TargetQID)) && (req->u.resolve.qsrv.ThisQInterval > 0))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("Q: DNSServiceResolve %##s %s PID[%d](%s)", req->u.resolve.qsrv.qname.c, DNSTypeName(req->u.resolve.qsrv.qtype),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == queryrecord_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((mDNSOpaque16IsZero(req->u.queryrecord.q.TargetQID)) && (req->u.queryrecord.q.ThisQInterval > 0))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("Q: DNSServiceQueryRecord %##s %s PID[%d](%s)", req->u.queryrecord.q.qname.c, DNSTypeName(req->u.queryrecord.q.qtype),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == addrinfo_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((mDNSOpaque16IsZero(req->u.addrinfo.q4.TargetQID)) && (req->u.addrinfo.q4.ThisQInterval > 0))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMcastNoIdent("Q: DNSServiceGetAddrInfo %s%s %##s PID[%d](%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->u.addrinfo.protocol & kDNSServiceProtocol_IPv4 ? "v4" : " ",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->u.addrinfo.protocol & kDNSServiceProtocol_IPv6 ? "v6" : " ",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome req->u.addrinfo.q4.qname.c, req->process_id, req->pid_name, i_mcount++);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case kDNSRecordTypeUnregistered: return ("Unregistered ");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case kDNSRecordTypeDeregistering: return ("Deregistering");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case kDNSRecordTypeAdvisory: return ("Advisory ");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case kDNSRecordTypeVerified: return ("Verified ");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case kDNSRecordTypeKnownUnique: return ("KnownUnique ");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome default: return("Unknown");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ag = m->rrauth.rrauth_hash[slot]; ag; ag = ag->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (ar->RecordCallback != FreeEtcHosts) continue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (showheader) { showheader = mDNSfalse; LogMsgNoIdent(" State Interface"); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Print a maximum of 50 records
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (count++ >= 50) { truncated = mDNStrue; continue; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (ar->resrec.InterfaceID == mDNSInterface_LocalOnly)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent(" %s LO %s", RecordTypeName(ar->resrec.RecordType), ARDisplayString(m, ar));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSu32 scopeid = (mDNSu32)(uintptr_t)ar->resrec.InterfaceID;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent(" %s %u %s", RecordTypeName(ar->resrec.RecordType), scopeid, ARDisplayString(m, ar));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (truncated) LogMsgNoIdent("<Truncated: to 50 records, Total records %d, Total Auth Groups %d, Auth Slots %d>", count, m->rrauth.rrauth_totalused, authslot);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void LogLocalOnlyAuthRecords(mDNS *const m)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (ag = m->rrauth.rrauth_hash[slot]; ag; ag = ag->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (ar->RecordCallback == FreeEtcHosts) continue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (showheader) { showheader = mDNSfalse; LogMsgNoIdent(" State Interface"); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Print a maximum of 400 records
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent(" %s LO %s", RecordTypeName(ar->resrec.RecordType), ARDisplayString(m, ar));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent(" %s PP %s", RecordTypeName(ar->resrec.RecordType), ARDisplayString(m, ar));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal char *AnonInfoToString(AnonymousInfo *ai, char *anonstr, int anstrlen)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome return (AnonDataToString(ai->AnonData, ai->AnonDataLen, anonstr, anstrlen));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void LogOneAuthRecord(mDNS *const m, const AuthRecord *ar, mDNSs32 now, const char *const ifname)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (ar->LastAPTime + ar->ThisAPInterval - now) / mDNSPlatformOneSecond,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ar->expire ? (ar->expire - now) / mDNSPlatformOneSecond : 0,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ar->AnnounceCount ? (ar->LastAPTime + ar->ThisAPInterval - now) / mDNSPlatformOneSecond : 0,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ar->TimeExpire ? (ar->TimeExpire - now) / mDNSPlatformOneSecond : 0,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ARDisplayString(m, ar), AnonInfoToString(ar->resrec.AnonInfo, anstr, sizeof(anstr)));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void LogAuthRecords(mDNS *const m, const mDNSs32 now, AuthRecord *ResourceRecords, int *proxy)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const char *const ifname = InterfaceNameForID(m, ar->resrec.InterfaceID);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((ar->WakeUp.HMAC.l[0] != 0) == (proxy != mDNSNULL))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (showheader) { showheader = mDNSfalse; LogMsgNoIdent(" Int Next Expire State"); }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!mDNSPlatformMemSame(&owner, &ar->WakeUp, sizeof(owner)))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Proxying for H-MAC %.6a I-MAC %.6a Password %.6a seq %d", &owner.HMAC, &owner.IMAC, &owner.password, owner.seq);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (!mDNSSameEthAddress(&owner.HMAC, &owner.IMAC))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Proxying for H-MAC %.6a I-MAC %.6a seq %d", &owner.HMAC, &owner.IMAC, owner.seq);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Proxying for %.6a seq %d", &owner.HMAC, owner.seq);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent(" LO %s", ARDisplayString(m, ar));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent(" PP %s", ARDisplayString(m, ar));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ResourceRecord *nsec3 = ar->resrec.AnonInfo->nsec3RR;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // We just print the values from the AuthRecord to keep it nicely aligned though
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // all we want here is the nsec3 information.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ar->AnnounceCount ? (ar->LastAPTime + ar->ThisAPInterval - now) / mDNSPlatformOneSecond : 0,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ar->TimeExpire ? (ar->TimeExpire - now) / mDNSPlatformOneSecond : 0,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void PrintOneCacheRecord(mDNS *const m, const CacheRecord *cr, mDNSu32 slot, const mDNSu32 remain, const char *ifname, mDNSu32 *CacheUsed)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (cr->resrec.RecordType == kDNSRecordTypePacketNegative) ? "-" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (cr->resrec.RecordType & kDNSRecordTypePacketUniqueMask) ? " " : "+",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal void PrintCachedRecords(mDNS *const m, const CacheRecord *cr, mDNSu32 slot, const mDNSu32 remain, const char *ifname, mDNSu32 *CacheUsed)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // The records that are cached under the main cache record like nsec, soa don't have
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // their own lifetime. If the main cache record expires, they also expire.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome PrintOneCacheRecord(m, nsec, slot, remain, ifname, CacheUsed);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome PrintOneCacheRecord(m, soa, slot, remain, ifname, CacheUsed);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ResourceRecord *nsec3 = cr->resrec.AnonInfo->nsec3RR;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Even though it is a resource record, we print the sameway
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // as a cache record so that it aligns properly.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (nsec3->RecordType == kDNSRecordTypePacketNegative) ? "-" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (nsec3->RecordType & kDNSRecordTypePacketUniqueMask) ? " " : "+",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal char *AnonDataToString(const mDNSu8 *ad, int adlen, char *adstr, int adstrlen)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // If the caller is lazy to compute the length, we do it for them.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Print the anondata within brackets. Hence, we need space for two
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // brackets and a NULL byte.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport void LogMDNSStatistics(mDNS *const m)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Name Conflicts %u", m->mDNSStats.NameConflicts);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("KnownUnique Name Conflicts %u", m->mDNSStats.KnownUniqueNameConflicts);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Duplicate Query Suppressions %u", m->mDNSStats.DupQuerySuppressions);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("KA Suppressions %u", m->mDNSStats.KnownAnswerSuppressions);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("KA Multiple Packets %u", m->mDNSStats.KnownAnswerMultiplePkts);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Poof Cache Deletions %u", m->mDNSStats.PoofCacheDeletions);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("--------------------------------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Multicast packets Sent %u", m->MulticastPacketsSent);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Multicast packets Received %u", m->MPktNum);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Remote Subnet packets %u", m->RemoteSubnet);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("QU questions received %u", m->mDNSStats.UnicastBitInQueries);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Normal multicast questions %u", m->mDNSStats.NormalQueries);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Answers for questions %u", m->mDNSStats.MatchingAnswersForQueries);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Unicast responses %u", m->mDNSStats.UnicastResponses);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Multicast responses %u", m->mDNSStats.MulticastResponses);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Unicast response Demotions %u", m->mDNSStats.UnicastDemotedToMulticast);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("--------------------------------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Sleeps %u", m->mDNSStats.Sleeps);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Wakeups %u", m->mDNSStats.Wakes);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Interface UP events %u", m->mDNSStats.InterfaceUp);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Interface UP Flap events %u", m->mDNSStats.InterfaceUpFlap);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Interface Down events %u", m->mDNSStats.InterfaceDown);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Interface DownFlap events %u", m->mDNSStats.InterfaceDownFlap);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Cache refresh queries %u", m->mDNSStats.CacheRefreshQueries);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Cache refreshed %u", m->mDNSStats.CacheRefreshed);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Wakeup on Resolves %u", m->mDNSStats.WakeOnResolves);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Timenow 0x%08lX (%d)", (mDNSu32)now, now);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("------------ Cache -------------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (slot = 0; slot < CACHE_HASH_SLOTS; slot++)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (cg = m->rrcache_hash[slot]; cg; cg=cg->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome CacheUsed++; // Count one cache entity for the CacheGroup object
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome const mDNSs32 remain = cr->resrec.rroriginalttl - (now - cr->TimeRcvd) / mDNSPlatformOneSecond;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSInterfaceID InterfaceID = cr->resrec.InterfaceID;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!InterfaceID && cr->resrec.rDNSServer && cr->resrec.rDNSServer->scoped)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome InterfaceID = cr->resrec.rDNSServer->interface;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome PrintOneCacheRecord(m, cr, slot, remain, ifname, &CacheUsed);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome PrintCachedRecords(m, cr, slot, remain, ifname, &CacheUsed);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Cache use mismatch: rrcache_totalused is %lu, true count %lu", m->rrcache_totalused, CacheUsed);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Cache use mismatch: rrcache_active is %lu, true count %lu", m->rrcache_active, CacheActive);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Cache currently contains %lu entities; %lu referenced by active questions", CacheUsed, CacheActive);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("--------- Auth Records ---------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogAuthRecords(m, now, m->ResourceRecords, mDNSNULL);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("--------- LocalOnly, P2P Auth Records ---------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("--------- /etc/hosts ---------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("------ Duplicate Records -------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogAuthRecords(m, now, m->DuplicateRecords, mDNSNULL);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("----- Auth Records Proxied -----");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogAuthRecords(m, now, m->ResourceRecords, &ProxyA);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("-- Duplicate Records Proxied ---");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogAuthRecords(m, now, m->DuplicateRecords, &ProxyD);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("---------- Questions -----------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent(" Int Next if T NumAns VDNS Qptr DupOf SU SQ Type Name");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSs32 i = q->ThisQInterval / mDNSPlatformOneSecond;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSs32 n = (NextQSendTime(q) - now) / mDNSPlatformOneSecond;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char *ifname = InterfaceNameForID(m, q->InterfaceID);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("%6d%6d %-7s%s%s %5d 0x%x%x 0x%p 0x%p %1d %2d %-5s%##s%s%s",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ifname ? ifname : mDNSOpaque16IsZero(q->TargetQID) ? "" : "-U-",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSOpaque16IsZero(q->TargetQID) ? (q->LongLived ? "l" : " ") : (q->LongLived ? "L" : "O"),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome PrivateQuery(q) ? "P" : q->ValidationRequired ? "V" : q->ValidatingResponse ? "R" : " ",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->CurrentAnswers, q->validDNSServers.l[1], q->validDNSServers.l[0], q, q->DuplicateOf,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->SuppressUnusable, q->SuppressQuery, DNSTypeName(q->qtype), q->qname.c,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome AnonInfoToString(q->AnonInfo, anonstr, sizeof(anonstr)),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("%lu question%s; %lu active", CacheUsed, CacheUsed > 1 ? "s" : "", CacheActive);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("----- Local-Only Questions -----");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!m->LocalOnlyQuestions) LogMsgNoIdent("<None>");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else for (q = m->LocalOnlyQuestions; q; q=q->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome q->CurrentAnswers, DNSTypeName(q->qtype), q->qname.c, q->DuplicateOf ? " (dup)" : "");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("---- Active UDS Client Requests ----");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->primary) // If this is a subbordinate operation, check that the parent is in the list
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (r = all_requests; r && r != req; r=r->next) if (r == req->primary) goto foundparent;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("%3d: Orhpan operation %p; parent %p not found in request list", req->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // For non-subbordinate operations, and subbordinate operations that have lost their parent, write out their info
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("-------- NAT Traversals --------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("ExtAddress %.4a Retry %d Interval %d",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome m->retryGetAddr ? (m->retryGetAddr - now) / mDNSPlatformOneSecond : 0,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome m->retryIntervalGetAddr / mDNSPlatformOneSecond);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (nat = m->NATTraversals; nat; nat=nat->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("%p %s Int %5d %s Err %d Retry %5d Interval %5d Expire %5d Req %.4a:%d Ext %.4a:%d",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome nat->Protocol ? (nat->Protocol == NATOp_MapTCP ? "TCP" : "UDP") : "ADD",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome (nat->lastSuccessfulProtocol == NATTProtocolNone ? "None " :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome nat->lastSuccessfulProtocol == NATTProtocolNATPMP ? "NAT-PMP " :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome nat->lastSuccessfulProtocol == NATTProtocolUPNPIGD ? "UPnP/IGD" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome nat->lastSuccessfulProtocol == NATTProtocolPCP ? "PCP " :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome nat->retryPortMap ? (nat->retryPortMap - now) / mDNSPlatformOneSecond : 0,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome nat->ExpiryTime ? (nat->ExpiryTime - now) / mDNSPlatformOneSecond : 0,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome &nat->NewAddress, mDNSVal16(nat->RequestedPort),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome &nat->ExternalAddress, mDNSVal16(nat->ExternalPort));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("--------- AuthInfoList ---------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome a->hostname.c, (a->port.b[0] << 8 | a->port.b[1]),
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome &a->AutoTunnelInnerAddress, a->AutoTunnel ? " AutoTunnel" : "");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("--------- TunnelClients --------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!m->TunnelClients) LogMsgNoIdent("<None>");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("%##s local %.16a %.4a %.16a remote %.16a %.4a %5d %.16a interval %d",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome c->dstname.c, &c->loc_inner, &c->loc_outer, &c->loc_outer6, &c->rmt_inner, &c->rmt_outer, mDNSVal16(c->rmt_outer_port), &c->rmt_outer6, c->q.ThisQInterval);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome #endif // APPLE_OSX_mDNSResponder
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("---------- Misc State ----------");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("PrimaryMAC: %.6a", &m->PrimaryMAC);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome m->SleepState == SleepState_Transferring ? "Transferring" :
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome m->SleepState == SleepState_Sleeping ? "Sleeping" : "?",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!m->SPSSocket) LogMsgNoIdent("Not offering Sleep Proxy Service");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else LogMsgNoIdent("Offering Sleep Proxy Service: %#s", m->SPSRecords.RR_SRV.resrec.name->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (m->ProxyRecords == ProxyA + ProxyD) LogMsgNoIdent("ProxyRecords: %d + %d = %d", ProxyA, ProxyD, ProxyA + ProxyD);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else LogMsgNoIdent("ProxyRecords: MISMATCH %d + %d = %d ≠ %d", ProxyA, ProxyD, ProxyA + ProxyD, m->ProxyRecords);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("------ Auto Browse Domains -----");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!AutoBrowseDomains) LogMsgNoIdent("<None>");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else for (d=AutoBrowseDomains; d; d=d->next) LogMsgNoIdent("%##s", d->name.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("--- Auto Registration Domains --");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!AutoRegistrationDomains) LogMsgNoIdent("<None>");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else for (d=AutoRegistrationDomains; d; d=d->next) LogMsgNoIdent("%##s", d->name.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char *ifname = InterfaceNameForID(m, s->InterfaceID);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("%##s %s", s->domain.c, ifname ? ifname : "");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformFormatTime((unsigned long)ta->validFrom, fromTimeBuf, sizeof(fromTimeBuf));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSPlatformFormatTime((unsigned long)ta->validUntil, untilTimeBuf, sizeof(untilTimeBuf));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("%##s %d %d %d %d %s %s", ta->zone.c, ta->rds.keyTag,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome ta->rds.alg, ta->rds.digestType, ta->digestLen, fromTimeBuf, untilTimeBuf);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("Next Stats Time %u", m->NextStatLogTime - mDNSPlatformUTC());
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Unicast Cache size %u", m->rrcache_totalused_unicast);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Cache size %u", m->DNSSECStats.TotalMemUsed);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC usage percentage %u", ((unsigned long)(m->DNSSECStats.TotalMemUsed * 100))/m->rrcache_totalused_unicast);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Extra Packets (0 to 2) %u", m->DNSSECStats.ExtraPackets0);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Extra Packets (3 to 6) %u", m->DNSSECStats.ExtraPackets3);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Extra Packets (7 to 9) %u", m->DNSSECStats.ExtraPackets7);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Extra Packets ( >= 10) %u", m->DNSSECStats.ExtraPackets10);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Latency (0 to 4ms) %u", m->DNSSECStats.Latency0);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Latency (4 to 9ms) %u", m->DNSSECStats.Latency5);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Latency (10 to 19ms) %u", m->DNSSECStats.Latency10);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Latency (20 to 49ms) %u", m->DNSSECStats.Latency20);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Latency (50 to 99ms) %u", m->DNSSECStats.Latency50);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Latency ( >=100ms) %u", m->DNSSECStats.Latency100);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Secure Status %u", m->DNSSECStats.SecureStatus);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Insecure Status %u", m->DNSSECStats.InsecureStatus);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Indeterminate Status %u", m->DNSSECStats.IndeterminateStatus);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Bogus Status %u", m->DNSSECStats.BogusStatus);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC NoResponse Status %u", m->DNSSECStats.NoResponseStatus);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Probes sent %u", m->DNSSECStats.NumProbesSent);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Msg Size (<=1024) %u", m->DNSSECStats.MsgSize0);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Msg Size (<=2048) %u", m->DNSSECStats.MsgSize1);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogInfo("DNSSEC Msg Size (> 2048) %u", m->DNSSECStats.MsgSize2);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("---- Task Scheduling Timers ----");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("NewQuestion DelayAnswering %d %d %##s (%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome m->NewQuestions->DelayAnswering, m->NewQuestions->DelayAnswering-now,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome m->NewQuestions->qname.c, DNSTypeName(m->NewQuestions->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("NewLocalOnlyQuestions %##s (%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome m->NewLocalOnlyQuestions->qname.c, DNSTypeName(m->NewLocalOnlyQuestions->qtype));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("NewLocalRecords %02X %s", m->NewLocalRecords->resrec.RecordType, ARDisplayString(m, m->NewLocalRecords));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("SPSProxyListChanged%s", m->SPSProxyListChanged ? "" : " <NONE>");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("LocalRemoveEvents%s", m->LocalRemoveEvents ? "" : " <NONE>");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("m->AutoTunnelRelayAddr %.16a", &m->AutoTunnelRelayAddr);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("m->WABBrowseQueriesCount %d", m->WABBrowseQueriesCount);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("m->WABLBrowseQueriesCount %d", m->WABLBrowseQueriesCount);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("m->WABRegQueriesCount %d", m->WABRegQueriesCount);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("m->AutoTargetServices %d", m->AutoTargetServices);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent(" ABS (hex) ABS (dec) REL (hex) REL (dec)");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("m->timenow %08X %11d", now, now);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("m->timenow_adjust %08X %11d", m->timenow_adjust, m->timenow_adjust);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextScheduledEvent ", m->NextScheduledEvent);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextuDNSEvent ", m->NextuDNSEvent);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextSRVUpdate ", m->NextSRVUpdate);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextScheduledNATOp ", m->NextScheduledNATOp);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextCacheCheck ", m->NextCacheCheck);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextScheduledSPS ", m->NextScheduledSPS);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextScheduledKA ", m->NextScheduledKA);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextScheduledSPRetry ", m->NextScheduledSPRetry);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextScheduledQuery ", m->NextScheduledQuery);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextScheduledProbe ", m->NextScheduledProbe);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextScheduledResponse", m->NextScheduledResponse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->SuppressSending ", m->SuppressSending);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->SuppressProbes ", m->SuppressProbes);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->ProbeFailTime ", m->ProbeFailTime);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogTimer("m->NextScheduledStopTime ", m->NextScheduledStopTime);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#if APPLE_OSX_mDNSResponder && MACOSX_MDNS_MALLOC_DEBUGGING
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (req->next == (request_state *)~0 || (req->sd < 0 && req->sd != -2))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("UDS request list: %p is garbage (%d)", req, req->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("UDS request list: req->primary should not point to self %p/%d", req, req->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("UDS request list: Subordinate request %p/%d/%p should not have replies (%p)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if ((long)p & 3)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("UDS request list: req %p primary %p is misaligned (%d)", req, p, req->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (p && (p->next == (request_state *)~0 || (p->sd < 0 && p->sd != -2)))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("UDS request list: req %p primary %p is garbage (%d)", req, p, p->sd);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("UDS req->replies: %p is garbage", rep);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("UDS req->u.reg_recs: %p is garbage", r);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == regservice_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (s = req->u.servicereg.instances; s; s=s->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("UDS req->u.servicereg.instances: %p is garbage", s);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (req->terminate == browse_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (b = req->u.browser.browsers; b; b=b->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("UDS req->u.browser.browsers: %p is garbage", b);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (d->next == (DNameListElem *)~0 || d->name.c[0] > 63)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("SCPrefBrowseDomains: %p is garbage (%d)", d, d->name.c[0]);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (b->next == (ARListElem *)~0 || b->ar.resrec.name->c[0] > 63)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("LocalDomainEnumRecords: %p is garbage (%d)", b, b->ar.resrec.name->c[0]);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (d->next == (DNameListElem *)~0 || d->name.c[0] > 63)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("AutoBrowseDomains: %p is garbage (%d)", d, d->name.c[0]);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome for (d = AutoRegistrationDomains; d; d=d->next)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (d->next == (DNameListElem *)~0 || d->name.c[0] > 63)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMemCorruption("AutoRegistrationDomains: %p is garbage (%d)", d, d->name.c[0]);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#endif // APPLE_OSX_mDNSResponder && MACOSX_MDNS_MALLOC_DEBUGGING
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSlocal int send_msg(request_state *const req)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome reply_state *const rep = req->replies; // Send the first waiting reply
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome nwriten = send(req->sd, (char *)&rep->mhdr + rep->nwriten, rep->totallen - rep->nwriten, 0);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (dnssd_errno == dnssd_EINTR || dnssd_errno == dnssd_EWOULDBLOCK) nwriten = 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("send_msg ERROR: failed to write %d of %d bytes to fd %d errno %d (%s)",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome rep->totallen - rep->nwriten, rep->totallen, req->sd, dnssd_errno, dnssd_strerror(dnssd_errno));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome return (rep->nwriten == rep->totallen) ? t_complete : t_morecoming;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport mDNSs32 udsserver_idle(mDNSs32 nextevent)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (r->terminate == resolve_termination_callback)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (r->u.resolve.ReportTime && now - r->u.resolve.ReportTime >= 0)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsgNoIdent("Client application bug PID[%d](%s) : DNSServiceResolve(%##s) active for over two minutes. "
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome "This places considerable burden on the network.", r->process_id, r->pid_name, r->u.resolve.qsrv.qname.c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Note: Only primary req's have reply lists, not subordinate req's.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome r->replies->rhdr->flags |= dnssd_htonl(kDNSServiceFlagsMoreComing);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome result = send_msg(r); // Returns t_morecoming if buffer full because client is not reading
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome r->time_blocked = 0; // reset failure counter after successful send
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (result == t_terminated || result == t_error)
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsg("%3d: Could not write data to client PID[%d](%s) because of error - aborting connection", r->sd, r->process_id, r->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (r->replies) // If we failed to send everything, check our time_blocked timer
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNSStorage.SleepState != SleepState_Awake)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else if (now - r->time_blocked >= 10 * mDNSPlatformOneSecond * (r->unresponsiveness_reports+1))
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: Could not write data to client PID[%d](%s) after %ld seconds, %d repl%s waiting",
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome r->sd, r->process_id, r->pid_name, (now - r->time_blocked) / mDNSPlatformOneSecond, num, num == 1 ? "y" : "ies");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome LogMsg("%3d: Client PID[%d](%s) unresponsive; aborting connection", r->sd, r->process_id, r->pid_name);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!dnssd_SocketValid(r->sd)) // If this request is finished, unlink it from the list and free the memory
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Since we're already doing a list traversal, we unlink the request directly instead of using AbortUnlinkAndFree()
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // Check our structures are reasonable sizes. Including overly-large buffers, or embedding
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // other overly-large structures instead of having a pointer to them, can inadvertently
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // cause structure sizes (and therefore memory usage) to balloon unreasonably.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char sizecheck_request_state [(sizeof(request_state) <= 2000) ? 1 : -1];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char sizecheck_registered_record_entry[(sizeof(registered_record_entry) <= 60) ? 1 : -1];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char sizecheck_service_instance [(sizeof(service_instance) <= 6552) ? 1 : -1];
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome char sizecheck_browser_t [(sizeof(browser_t) <= 1128) ? 1 : -1];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char sizecheck_reply_hdr [(sizeof(reply_hdr) <= 12) ? 1 : -1];
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char sizecheck_reply_state [(sizeof(reply_state) <= 64) ? 1 : -1];