dnssd_ipc.h revision cda73f64f20b8a0afc4909f5ea1f055ec7913856
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#ifndef DNSSD_IPC_H
#define DNSSD_IPC_H
#include "dns_sd.h"
//
// Common cross platform services
//
#if defined(WIN32)
# include <winsock2.h>
# define dnssd_InvalidSocket INVALID_SOCKET
# define dnssd_SocketValid(s) ((s) != INVALID_SOCKET)
# define dnssd_EWOULDBLOCK WSAEWOULDBLOCK
# define dnssd_EINTR WSAEINTR
# define dnssd_ECONNRESET WSAECONNRESET
# define dnssd_sock_t SOCKET
# define dnssd_socklen_t int
# define dnssd_errno WSAGetLastError()
# define dnssd_strerror(X) win32_strerror(X)
# define ssize_t int
extern char *win32_strerror(int inErrorCode);
#else
# include <unistd.h>
# include <string.h>
# include <stdio.h>
# include <stdlib.h>
# define dnssd_InvalidSocket -1
# define dnssd_SocketValid(s) ((s) >= 0)
# define dnssd_EWOULDBLOCK EWOULDBLOCK
# define dnssd_EINTR EINTR
# define dnssd_ECONNRESET ECONNRESET
# define dnssd_EPIPE EPIPE
# define dnssd_sock_t int
# define dnssd_socklen_t unsigned int
# define dnssd_errno errno
# define dnssd_strerror(X) strerror(X)
#endif
#if defined(USE_TCP_LOOPBACK)
# define MDNS_TCP_SERVERADDR "127.0.0.1"
# define MDNS_TCP_SERVERPORT 5354
# define LISTENQ 5
# define dnssd_sockaddr_t struct sockaddr_in
#else
# ifndef MDNS_UDS_SERVERPATH
# define MDNS_UDS_SERVERPATH "/var/run/mDNSResponder"
# endif
# define MDNS_UDS_SERVERPATH_ENVVAR "DNSSD_UDS_PATH"
# define LISTENQ 100
// longest legal control path length
# define dnssd_sockaddr_t struct sockaddr_un
#endif
// Compatibility workaround
#ifndef AF_LOCAL
#endif
// General UDS constants
// IPC data encoding constants and types
#define VERSION 1
// Structure packing macro. If we're not using GNUC, it's not fatal. Most compilers naturally pack the on-the-wire
// structures correctly anyway, so a plain "struct" is usually fine. In the event that structures are not packed
// correctly, our compile-time assertion checks will catch it and prevent inadvertent generation of non-working code.
#ifndef packedstruct
#else
#define packedstruct struct
#define packedunion union
#endif
#endif
typedef enum
{
request_op_none = 0, // No request yet received on this connection
reg_record_request, // reg/remove record only valid for connected sockets
setdomain_request, // Up to here is in Tiger and B4W 1.0.3
getproperty_request, // New in B4W 1.0.4
port_mapping_request, // New in Leopard and B4W 2.0
send_bpf, // New in SL
cancel_request = 63
} request_op_t;
typedef enum
{
enumeration_reply_op = 64,
reg_record_reply_op, // Up to here is in Tiger and B4W 1.0.3
getproperty_reply_op, // New in B4W 1.0.4
port_mapping_reply_op, // New in Leopard and B4W 2.0
} reply_op_t;
#if defined(_WIN64)
# pragma pack(1)
#endif
// Define context object big enough to hold a 64-bit pointer,
// to accomodate 64-bit clients communicating with 32-bit daemon.
// There's no reason for the daemon to ever be a 64-bit process, but its clients might be
typedef packedunion
{
void *context;
typedef packedstruct
{
client_context_t client_context; // context passed from client, returned by server in corresponding reply
// socket connected by DNSServiceCreateConnection(). Must be unique in the scope of the connection, such that and
// index/socket pair uniquely identifies a record. (Used to select records for removal by DNSServiceRemoveRecord())
} ipc_msg_hdr;
#if defined(_WIN64)
# pragma pack()
#endif
// routines to write to and extract data from message buffers.
// caller responsible for bounds checking.
// ptr is the address of the pointer to the start of the field.
// it is advanced to point to the next field, or the end of the message
#define put_flags put_uint32
#define get_flags get_uint32
#define put_error_code put_uint32
#define get_error_code get_uint32
const char *get_rdata(const char **ptr, const char *end, int rdlen); // return value is rdata pointed to by *ptr -
// rdata is not copied from buffer.
{
// Check that the compiler generated our on-the-wire packet format structure definitions
// properly packed, without adding padding bytes to align fields on 32-bit or 64-bit boundaries.
};
#endif // DNSSD_IPC_H