4b22b9337f359bfd063322244f5336cc7c6ffcfars/* -*- Mode: C; tab-width: 4 -*-
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome * Copyright (c) 2004-2015 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#include <sys/socket.h> // Needed for socket() etc.
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#include <netinet/in.h> // Needed for sockaddr_in
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome#include "mDNSEmbeddedAPI.h" // Defines the interface provided to the client layer above
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome// Bind a UDP socket to find the source address to a destination
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport void mDNSPlatformSourceAddrForDest(mDNSAddr *const src, const mDNSAddr *const dst)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome union { struct sockaddr s; struct sockaddr_in a4; struct sockaddr_in6 a6; } addr;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome addr.a4.sin_port = 1; // Not important, any port will do
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome addr.a4.sin_addr.s_addr = dst->ip.v4.NotAnInteger;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome addr.a6.sin6_port = 1; // Not important, any port will do
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome addr.a6.sin6_addr = *(struct in6_addr*)&dst->ip.v6;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else return;
cda73f64f20b8a0afc4909f5ea1f055ec7913856Toomas Soome LogMsg("mDNSPlatformSourceAddrForDest: connect %#a failed errno %d (%s)", dst, errno,
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome { LogMsg("mDNSPlatformSourceAddrForDest: getsockname failed errno %d (%s)", errno, strerror(errno)); goto exit; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (dst->type == mDNSAddrType_IPv4) src->ip.v4.NotAnInteger = addr.a4.sin_addr.s_addr;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else src->ip.v6 = *(mDNSv6Addr*)&addr.a6.sin6_addr;
4b22b9337f359bfd063322244f5336cc7c6ffcfars// dst must be at least MAX_ESCAPED_DOMAIN_NAME bytes, and option must be less than 32 bytes in length
4b22b9337f359bfd063322244f5336cc7c6ffcfarsmDNSlocal mDNSBool GetConfigOption(char *dst, const char *option, FILE *f)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome char buf[32+1+MAX_ESCAPED_DOMAIN_NAME]; // Option name, one space, option value
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (len + 1 + MAX_ESCAPED_DOMAIN_NAME > sizeof(buf)-1) { LogMsg("GetConfigOption: option %s too long", option); return mDNSfalse; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome fseek(f, 0, SEEK_SET); // set position to beginning of stream
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome while (fgets(buf, sizeof(buf), f)) // Read at most sizeof(buf)-1 bytes from file, and append '\0' C-string terminator
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome strncpy(dst, buf + len + 1, MAX_ESCAPED_DOMAIN_NAME-1);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (dst[MAX_ESCAPED_DOMAIN_NAME-1]) dst[MAX_ESCAPED_DOMAIN_NAME-1] = '\0';
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (len && dst[len-1] == '\n') dst[len-1] = '\0'; // chop newline
4b22b9337f359bfd063322244f5336cc7c6ffcfarsmDNSexport void ReadDDNSSettingsFromConfFile(mDNS *const m, const char *const filename, domainname *const hostname, domainname *const domain, mDNSBool *DomainDiscoveryDisabled)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (DomainDiscoveryDisabled) *DomainDiscoveryDisabled = mDNSfalse;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (DomainDiscoveryDisabled && GetConfigOption(buf, "DomainDiscoveryDisabled", f) && !strcasecmp(buf, "true")) *DomainDiscoveryDisabled = mDNStrue;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (hostname && GetConfigOption(buf, "hostname", f) && !MakeDomainNameFromDNSNameString(hostname, buf)) goto badf;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (domain && GetConfigOption(buf, "zone", f) && !MakeDomainNameFromDNSNameString(domain, buf)) goto badf;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome GetConfigOption(buf, "secret-64", f); // failure means no authentication
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (errno != ENOENT) LogMsg("ERROR: Config file exists, but cannot be opened.");
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome DomainAuthInfo *info = (DomainAuthInfo*)mDNSPlatformMemAllocate(sizeof(*info));
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome // for now we assume keyname = service reg domain and we use same key for service and hostname registration
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome err = mDNS_SetSecretForDomain(m, info, domain, domain, buf, NULL, 0, mDNSfalse);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (err) LogMsg("ERROR: mDNS_SetSecretForDomain returned %d for domain %##s", err, domain->c);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport void mDNSPlatformWriteDebugMsg(const char *msg)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas SoomemDNSexport void mDNSPlatformWriteLogMsg(const char *ident, const char *buffer, mDNSLogLevel_t loglevel)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome mDNSs32 t = mDNSStorage.timenow ? mDNSStorage.timenow : mDNSPlatformClockDivisor ? mDNS_TimeNow_NoLock(&mDNSStorage) : 0;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (mDNS_DebugMode) // In debug mode we write to stderr
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (ident && ident[0] && mDNSPlatformClockDivisor)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome fprintf(stderr,"%8d.%03d: %s\n", (int)(t/1000), ms, buffer);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome else // else, in production mode, we write to syslog
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case MDNS_LOG_MSG: syslog_level = LOG_ERR; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case MDNS_LOG_OPERATION: syslog_level = LOG_WARNING; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case MDNS_LOG_SPS: syslog_level = LOG_NOTICE; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case MDNS_LOG_INFO: syslog_level = LOG_INFO; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome case MDNS_LOG_DEBUG: syslog_level = LOG_DEBUG; break;
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome fprintf(stderr, "Unknown loglevel %d, assuming LOG_ERR\n", loglevel);
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (!log_inited) { openlog(ident, LOG_CONS, LOG_DAEMON); log_inited++; }
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome if (ident && ident[0] && mDNSPlatformClockDivisor)
5ffb0c9b03b5149ff4f5821a62be4a52408ada2aToomas Soome syslog(syslog_level, "%8d.%03d: %s", (int)(t/1000), ms, buffer);