libpurple/protocols/bonjour/dns_sd_proxy.c

   1 /*
   2  * Purple is the legal property of its developers, whose names are too numerous
   3  * to list here.  Please refer to the COPYRIGHT file distributed with this
   4  * source distribution.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301, USA.
  19  */
  20
  21 #include "internal.h"
  22 #include <purple.h>
  23
  24 #include "dns_sd_proxy.h"
  25
  26 static DNSServiceErrorType (DNSSD_API* _DNSServiceAddRecord)(DNSServiceRef sdRef, DNSRecordRef *RecordRef, DNSServiceFlags flags,
  27                 uint16_t rrtype, uint16_t rdlen, const void *rdata, uint32_t ttl);
  28 static DNSServiceErrorType (DNSSD_API* _DNSServiceBrowse)(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex,
  29         const char *regtype, const char *domain, DNSServiceBrowseReply callBack, void *context);
  30 static int (DNSSD_API* _DNSServiceConstructFullName)(char *fullName, const char *service, const char *regtype, const char *domain);
  31 static DNSServiceErrorType (DNSSD_API* _DNSServiceGetAddrInfo)(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex,
  32         DNSServiceProtocol protocol, const char *hostname, DNSServiceGetAddrInfoReply callBack, void *context);
  33 static DNSServiceErrorType (DNSSD_API* _DNSServiceProcessResult)(DNSServiceRef sdRef);
  34 static DNSServiceErrorType (DNSSD_API* _DNSServiceQueryRecord)(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex,
  35         const char *fullname, uint16_t rrtype, uint16_t rrclass, DNSServiceQueryRecordReply callBack, void *context);
  36 static void (DNSSD_API* _DNSServiceRefDeallocate)(DNSServiceRef sdRef);
  37 static int (DNSSD_API* _DNSServiceRefSockFD)(DNSServiceRef sdRef);
  38 static DNSServiceErrorType (DNSSD_API* _DNSServiceRegister)(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex,
  39         const char *name, const char *regtype, const char *domain, const char *host, uint16_t port, uint16_t txtLen,
  40         const void *txtRecord, DNSServiceRegisterReply callBack, void *context);
  41 static DNSServiceErrorType (DNSSD_API* _DNSServiceResolve)(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex, const char *name,
  42         const char *regtype, const char *domain, DNSServiceResolveReply callBack, void *context);
  43 static DNSServiceErrorType (DNSSD_API* _DNSServiceRemoveRecord)(DNSServiceRef sdRef, DNSRecordRef RecordRef, DNSServiceFlags flags);
  44 static DNSServiceErrorType (DNSSD_API* _DNSServiceUpdateRecord)(DNSServiceRef sdRef, DNSRecordRef RecordRef, DNSServiceFlags flags,
  45         uint16_t rdlen, const void *rdata, uint32_t ttl);
  46 static void (DNSSD_API* _TXTRecordCreate)(TXTRecordRef *txtRecord, uint16_t bufferLen, void *buffer);
  47 static void (DNSSD_API* _TXTRecordDeallocate)(TXTRecordRef *txtRecord);
  48 static const void * (DNSSD_API* _TXTRecordGetBytesPtr)(const TXTRecordRef *txtRecord);
  49 static int16_t (DNSSD_API* _TXTRecordGetLength)(const TXTRecordRef *txtRecord);
  50 static const void * (DNSSD_API* _TXTRecordGetValuePtr)(uint16_t txtLen, const void *txtRecord, const char *key, uint8_t *valueLen);
  51 static DNSServiceErrorType (DNSSD_API* _TXTRecordSetValue)(TXTRecordRef *txtRecord, const char *key, uint8_t valueSize, const void *value);
  52
  53
  54 gboolean dns_sd_available(void) {
  55         static gboolean initialized = FALSE;
  56         static gboolean loaded = FALSE;
  57
  58         if (!initialized) {
  59                 initialized = TRUE;
  60                 if ((_DNSServiceAddRecord = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceAddRecord"))
  61                                 && (_DNSServiceBrowse = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceBrowse"))
  62                                 && (_DNSServiceConstructFullName = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceConstructFullName"))
  63                                 && (_DNSServiceGetAddrInfo = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceGetAddrInfo"))
  64                                 && (_DNSServiceProcessResult = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceProcessResult"))
  65                                 && (_DNSServiceQueryRecord = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceQueryRecord"))
  66                                 && (_DNSServiceRefDeallocate = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceRefDeallocate"))
  67                                 && (_DNSServiceRefSockFD = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceRefSockFD"))
  68                                 && (_DNSServiceRegister = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceRegister"))
  69                                 && (_DNSServiceResolve = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceResolve"))
  70                                 && (_DNSServiceRemoveRecord = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceRemoveRecord"))
  71                                 && (_DNSServiceUpdateRecord = (void *) wpurple_find_and_loadproc("dnssd.dll", "DNSServiceUpdateRecord"))
  72                                 && (_TXTRecordCreate = (void *) wpurple_find_and_loadproc("dnssd.dll", "TXTRecordCreate"))
  73                                 && (_TXTRecordDeallocate = (void *) wpurple_find_and_loadproc("dnssd.dll", "TXTRecordDeallocate"))
  74                                 && (_TXTRecordGetBytesPtr = (void *) wpurple_find_and_loadproc("dnssd.dll", "TXTRecordGetBytesPtr"))
  75                                 && (_TXTRecordGetLength = (void *) wpurple_find_and_loadproc("dnssd.dll", "TXTRecordGetLength"))
  76                                 && (_TXTRecordGetValuePtr = (void *) wpurple_find_and_loadproc("dnssd.dll", "TXTRecordGetValuePtr"))
  77                                 && (_TXTRecordSetValue = (void *) wpurple_find_and_loadproc("dnssd.dll", "TXTRecordSetValue"))) {
  78                         loaded = TRUE;
  79                 }
  80         }
  81         return loaded;
  82 }
  83
  84
  85 DNSServiceErrorType _wpurple_DNSServiceAddRecord(DNSServiceRef sdRef, DNSRecordRef *RecordRef, DNSServiceFlags flags,
  86                 uint16_t rrtype, uint16_t rdlen, const void *rdata, uint32_t ttl) {
  87         g_return_val_if_fail(_DNSServiceAddRecord != NULL, kDNSServiceErr_Unknown);
  88         return (_DNSServiceAddRecord)(sdRef, RecordRef, flags, rrtype, rdlen, rdata, ttl);
  89 }
  90
  91 DNSServiceErrorType _wpurple_DNSServiceBrowse(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex,
  92                 const char *regtype, const char *domain, DNSServiceBrowseReply callBack, void *context) {
  93         g_return_val_if_fail(_DNSServiceBrowse != NULL, kDNSServiceErr_Unknown);
  94         return (_DNSServiceBrowse)(sdRef, flags, interfaceIndex, regtype, domain, callBack, context);
  95 }
  96
  97 int _wpurple_DNSServiceConstructFullName(char *fullName, const char *service, const char *regtype, const char *domain) {
  98         g_return_val_if_fail(_DNSServiceConstructFullName != NULL, 0);
  99         return (_DNSServiceConstructFullName)(fullName, service, regtype, domain);
 100 }
 101
 102 DNSServiceErrorType _wpurple_DNSServiceGetAddrInfo(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex,
 103                 DNSServiceProtocol protocol, const char *hostname, DNSServiceGetAddrInfoReply callBack, void *context) {
 104         g_return_val_if_fail(_DNSServiceGetAddrInfo != NULL, 0);
 105         return (_DNSServiceGetAddrInfo)(sdRef, flags, interfaceIndex, protocol, hostname, callBack, context);
 106 }
 107
 108 DNSServiceErrorType _wpurple_DNSServiceProcessResult(DNSServiceRef sdRef) {
 109         g_return_val_if_fail(_DNSServiceProcessResult != NULL, kDNSServiceErr_Unknown);
 110         return (_DNSServiceProcessResult)(sdRef);
 111 }
 112
 113
 114 DNSServiceErrorType _wpurple_DNSServiceQueryRecord(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex,
 115                 const char *fullname, uint16_t rrtype, uint16_t rrclass, DNSServiceQueryRecordReply callBack, void *context) {
 116         g_return_val_if_fail(_DNSServiceQueryRecord != NULL, kDNSServiceErr_Unknown);
 117         return (_DNSServiceQueryRecord)(sdRef, flags, interfaceIndex, fullname, rrtype, rrclass, callBack, context);
 118 }
 119
 120 void _wpurple_DNSServiceRefDeallocate(DNSServiceRef sdRef) {
 121         g_return_if_fail(_DNSServiceRefDeallocate != NULL);
 122         (_DNSServiceRefDeallocate)(sdRef);
 123 }
 124
 125 int _wpurple_DNSServiceRefSockFD(DNSServiceRef sdRef) {
 126         g_return_val_if_fail(_DNSServiceRefSockFD != NULL, -1);
 127         return (_DNSServiceRefSockFD)(sdRef);
 128 }
 129
 130 DNSServiceErrorType _wpurple_DNSServiceRegister(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex,
 131                 const char *name, const char *regtype, const char *domain, const char *host, uint16_t port, uint16_t txtLen,
 132                 const void *txtRecord, DNSServiceRegisterReply callBack, void *context) {
 133         g_return_val_if_fail(_DNSServiceRegister != NULL, kDNSServiceErr_Unknown);
 134         return (_DNSServiceRegister)(sdRef, flags, interfaceIndex, name, regtype, domain, host, port, txtLen, txtRecord, callBack, context);
 135 }
 136
 137 DNSServiceErrorType _wpurple_DNSServiceResolve(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex, const char *name,
 138                 const char *regtype, const char *domain, DNSServiceResolveReply callBack, void *context) {
 139         g_return_val_if_fail(_DNSServiceResolve != NULL, kDNSServiceErr_Unknown);
 140         return (_DNSServiceResolve)(sdRef, flags, interfaceIndex, name, regtype, domain, callBack, context);
 141 }
 142
 143 DNSServiceErrorType _wpurple_DNSServiceRemoveRecord(DNSServiceRef sdRef, DNSRecordRef RecordRef, DNSServiceFlags flags) {
 144         g_return_val_if_fail(_DNSServiceRemoveRecord != NULL, kDNSServiceErr_Unknown);
 145         return (_DNSServiceRemoveRecord)(sdRef, RecordRef, flags);
 146 }
 147
 148 DNSServiceErrorType _wpurple_DNSServiceUpdateRecord(DNSServiceRef sdRef, DNSRecordRef RecordRef, DNSServiceFlags flags,
 149                 uint16_t rdlen, const void *rdata, uint32_t ttl) {
 150         g_return_val_if_fail(_DNSServiceUpdateRecord != NULL, kDNSServiceErr_Unknown);
 151         return (_DNSServiceUpdateRecord)(sdRef, RecordRef, flags, rdlen, rdata, ttl);
 152 }
 153
 154 void _wpurple_TXTRecordCreate(TXTRecordRef *txtRecord, uint16_t bufferLen, void *buffer) {
 155         g_return_if_fail(_TXTRecordCreate != NULL);
 156         (_TXTRecordCreate)(txtRecord, bufferLen, buffer);
 157 }
 158
 159 void _wpurple_TXTRecordDeallocate(TXTRecordRef *txtRecord) {
 160         g_return_if_fail(_TXTRecordDeallocate != NULL);
 161         (_TXTRecordDeallocate)(txtRecord);
 162 }
 163
 164 const void * _wpurple_TXTRecordGetBytesPtr(const TXTRecordRef *txtRecord) {
 165         g_return_val_if_fail(_TXTRecordGetBytesPtr != NULL, NULL);
 166         return (_TXTRecordGetBytesPtr)(txtRecord);
 167 }
 168
 169 uint16_t _wpurple_TXTRecordGetLength(const TXTRecordRef *txtRecord) {
 170         g_return_val_if_fail(_TXTRecordGetLength != NULL, 0);
 171         return (_TXTRecordGetLength)(txtRecord);
 172 }
 173
 174 const void * _wpurple_TXTRecordGetValuePtr(uint16_t txtLen, const void *txtRecord, const char *key, uint8_t *valueLen) {
 175         g_return_val_if_fail(_TXTRecordGetValuePtr != NULL, NULL);
 176         return (_TXTRecordGetValuePtr)(txtLen, txtRecord, key, valueLen);
 177 }
 178
 179 DNSServiceErrorType _wpurple_TXTRecordSetValue(TXTRecordRef *txtRecord, const char *key, uint8_t valueSize, const void *value) {
 180         g_return_val_if_fail(_TXTRecordSetValue != NULL, kDNSServiceErr_Unknown);
 181         return (_TXTRecordSetValue)(txtRecord, key, valueSize, value);
 182 }
 183