libpurple/protocols/bonjour/dns_sd_proxy.c

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