2 * Copyright (C) 2011-2012 Juho Vähä-Herttua
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
28 #define MAX_DEVICEID 18
29 #define MAX_SERVNAME 256
31 #define USE_LIBDL (defined(HAVE_LIBDL) && !defined(__APPLE__))
33 #if defined(WIN32) || USE_LIBDL
36 # if !defined(EFI32) && !defined(EFI64)
37 # define DNSSD_STDCALL __stdcall
39 # define DNSSD_STDCALL
43 # define DNSSD_STDCALL
46 typedef struct _DNSServiceRef_t
*DNSServiceRef
;
47 typedef union _TXTRecordRef_t
{ char PrivateData
[16]; char *ForceNaturalAlignment
; } TXTRecordRef
;
49 typedef uint32_t DNSServiceFlags
;
50 typedef int32_t DNSServiceErrorType
;
52 typedef void (DNSSD_STDCALL
*DNSServiceRegisterReply
)
55 DNSServiceFlags flags
,
56 DNSServiceErrorType errorCode
,
65 # define DNSSD_STDCALL
68 typedef DNSServiceErrorType (DNSSD_STDCALL
*DNSServiceRegister_t
)
71 DNSServiceFlags flags
,
72 uint32_t interfaceIndex
,
79 const void *txtRecord
,
80 DNSServiceRegisterReply callBack
,
83 typedef void (DNSSD_STDCALL
*DNSServiceRefDeallocate_t
)(DNSServiceRef sdRef
);
84 typedef void (DNSSD_STDCALL
*TXTRecordCreate_t
)
86 TXTRecordRef
*txtRecord
,
90 typedef void (DNSSD_STDCALL
*TXTRecordDeallocate_t
)(TXTRecordRef
*txtRecord
);
91 typedef DNSServiceErrorType (DNSSD_STDCALL
*TXTRecordSetValue_t
)
93 TXTRecordRef
*txtRecord
,
98 typedef uint16_t (DNSSD_STDCALL
*TXTRecordGetLength_t
)(const TXTRecordRef
*txtRecord
);
99 typedef const void * (DNSSD_STDCALL
*TXTRecordGetBytesPtr_t
)(const TXTRecordRef
*txtRecord
);
109 DNSServiceRegister_t DNSServiceRegister
;
110 DNSServiceRefDeallocate_t DNSServiceRefDeallocate
;
111 TXTRecordCreate_t TXTRecordCreate
;
112 TXTRecordSetValue_t TXTRecordSetValue
;
113 TXTRecordGetLength_t TXTRecordGetLength
;
114 TXTRecordGetBytesPtr_t TXTRecordGetBytesPtr
;
115 TXTRecordDeallocate_t TXTRecordDeallocate
;
117 DNSServiceRef raopService
;
118 DNSServiceRef airplayService
;
124 dnssd_init(int *error
)
128 if (error
) *error
= DNSSD_ERROR_NOERROR
;
130 dnssd
= calloc(1, sizeof(dnssd_t
));
132 if (error
) *error
= DNSSD_ERROR_OUTOFMEM
;
137 dnssd
->module
= LoadLibraryA("dnssd.dll");
138 if (!dnssd
->module
) {
139 if (error
) *error
= DNSSD_ERROR_LIBNOTFOUND
;
143 dnssd
->DNSServiceRegister
= (DNSServiceRegister_t
)GetProcAddress(dnssd
->module
, "DNSServiceRegister");
144 dnssd
->DNSServiceRefDeallocate
= (DNSServiceRefDeallocate_t
)GetProcAddress(dnssd
->module
, "DNSServiceRefDeallocate");
145 dnssd
->TXTRecordCreate
= (TXTRecordCreate_t
)GetProcAddress(dnssd
->module
, "TXTRecordCreate");
146 dnssd
->TXTRecordSetValue
= (TXTRecordSetValue_t
)GetProcAddress(dnssd
->module
, "TXTRecordSetValue");
147 dnssd
->TXTRecordGetLength
= (TXTRecordGetLength_t
)GetProcAddress(dnssd
->module
, "TXTRecordGetLength");
148 dnssd
->TXTRecordGetBytesPtr
= (TXTRecordGetBytesPtr_t
)GetProcAddress(dnssd
->module
, "TXTRecordGetBytesPtr");
149 dnssd
->TXTRecordDeallocate
= (TXTRecordDeallocate_t
)GetProcAddress(dnssd
->module
, "TXTRecordDeallocate");
151 if (!dnssd
->DNSServiceRegister
|| !dnssd
->DNSServiceRefDeallocate
|| !dnssd
->TXTRecordCreate
||
152 !dnssd
->TXTRecordSetValue
|| !dnssd
->TXTRecordGetLength
|| !dnssd
->TXTRecordGetBytesPtr
||
153 !dnssd
->TXTRecordDeallocate
) {
154 if (error
) *error
= DNSSD_ERROR_PROCNOTFOUND
;
155 FreeLibrary(dnssd
->module
);
160 dnssd
->module
= dlopen("libdns_sd.so", RTLD_LAZY
);
161 if (!dnssd
->module
) {
162 if (error
) *error
= DNSSD_ERROR_LIBNOTFOUND
;
166 dnssd
->DNSServiceRegister
= (DNSServiceRegister_t
)dlsym(dnssd
->module
, "DNSServiceRegister");
167 dnssd
->DNSServiceRefDeallocate
= (DNSServiceRefDeallocate_t
)dlsym(dnssd
->module
, "DNSServiceRefDeallocate");
168 dnssd
->TXTRecordCreate
= (TXTRecordCreate_t
)dlsym(dnssd
->module
, "TXTRecordCreate");
169 dnssd
->TXTRecordSetValue
= (TXTRecordSetValue_t
)dlsym(dnssd
->module
, "TXTRecordSetValue");
170 dnssd
->TXTRecordGetLength
= (TXTRecordGetLength_t
)dlsym(dnssd
->module
, "TXTRecordGetLength");
171 dnssd
->TXTRecordGetBytesPtr
= (TXTRecordGetBytesPtr_t
)dlsym(dnssd
->module
, "TXTRecordGetBytesPtr");
172 dnssd
->TXTRecordDeallocate
= (TXTRecordDeallocate_t
)dlsym(dnssd
->module
, "TXTRecordDeallocate");
174 if (!dnssd
->DNSServiceRegister
|| !dnssd
->DNSServiceRefDeallocate
|| !dnssd
->TXTRecordCreate
||
175 !dnssd
->TXTRecordSetValue
|| !dnssd
->TXTRecordGetLength
|| !dnssd
->TXTRecordGetBytesPtr
||
176 !dnssd
->TXTRecordDeallocate
) {
177 if (error
) *error
= DNSSD_ERROR_PROCNOTFOUND
;
178 dlclose(dnssd
->module
);
183 dnssd
->DNSServiceRegister
= &DNSServiceRegister
;
184 dnssd
->DNSServiceRefDeallocate
= &DNSServiceRefDeallocate
;
185 dnssd
->TXTRecordCreate
= &TXTRecordCreate
;
186 dnssd
->TXTRecordSetValue
= &TXTRecordSetValue
;
187 dnssd
->TXTRecordGetLength
= &TXTRecordGetLength
;
188 dnssd
->TXTRecordGetBytesPtr
= &TXTRecordGetBytesPtr
;
189 dnssd
->TXTRecordDeallocate
= &TXTRecordDeallocate
;
196 dnssd_destroy(dnssd_t
*dnssd
)
200 FreeLibrary(dnssd
->module
);
202 dlclose(dnssd
->module
);
209 dnssd_register_raop(dnssd_t
*dnssd
, const char *name
, unsigned short port
, const char *hwaddr
, int hwaddrlen
, int password
)
211 TXTRecordRef txtRecord
;
212 char servname
[MAX_SERVNAME
];
219 dnssd
->TXTRecordCreate(&txtRecord
, 0, NULL
);
220 dnssd
->TXTRecordSetValue(&txtRecord
, "txtvers", strlen(RAOP_TXTVERS
), RAOP_TXTVERS
);
221 dnssd
->TXTRecordSetValue(&txtRecord
, "ch", strlen(RAOP_CH
), RAOP_CH
);
222 dnssd
->TXTRecordSetValue(&txtRecord
, "cn", strlen(RAOP_CN
), RAOP_CN
);
223 dnssd
->TXTRecordSetValue(&txtRecord
, "et", strlen(RAOP_ET
), RAOP_ET
);
224 dnssd
->TXTRecordSetValue(&txtRecord
, "sv", strlen(RAOP_SV
), RAOP_SV
);
225 dnssd
->TXTRecordSetValue(&txtRecord
, "da", strlen(RAOP_DA
), RAOP_DA
);
226 dnssd
->TXTRecordSetValue(&txtRecord
, "sr", strlen(RAOP_SR
), RAOP_SR
);
227 dnssd
->TXTRecordSetValue(&txtRecord
, "ss", strlen(RAOP_SS
), RAOP_SS
);
229 dnssd
->TXTRecordSetValue(&txtRecord
, "pw", strlen("true"), "true");
231 dnssd
->TXTRecordSetValue(&txtRecord
, "pw", strlen("false"), "false");
233 dnssd
->TXTRecordSetValue(&txtRecord
, "vn", strlen(RAOP_VN
), RAOP_VN
);
234 dnssd
->TXTRecordSetValue(&txtRecord
, "tp", strlen(RAOP_TP
), RAOP_TP
);
235 dnssd
->TXTRecordSetValue(&txtRecord
, "md", strlen(RAOP_MD
), RAOP_MD
);
236 dnssd
->TXTRecordSetValue(&txtRecord
, "vs", strlen(GLOBAL_VERSION
), GLOBAL_VERSION
);
237 dnssd
->TXTRecordSetValue(&txtRecord
, "sm", strlen(RAOP_SM
), RAOP_SM
);
238 dnssd
->TXTRecordSetValue(&txtRecord
, "ek", strlen(RAOP_EK
), RAOP_EK
);
240 /* Convert hardware address to string */
241 ret
= utils_hwaddr_raop(servname
, sizeof(servname
), hwaddr
, hwaddrlen
);
243 /* FIXME: handle better */
247 /* Check that we have bytes for 'hw@name' format */
248 if (sizeof(servname
) < strlen(servname
)+1+strlen(name
)+1) {
249 /* FIXME: handle better */
253 strncat(servname
, "@", sizeof(servname
)-strlen(servname
)-1);
254 strncat(servname
, name
, sizeof(servname
)-strlen(servname
)-1);
256 /* Register the service */
257 dnssd
->DNSServiceRegister(&dnssd
->raopService
, 0, 0,
258 servname
, "_raop._tcp",
261 dnssd
->TXTRecordGetLength(&txtRecord
),
262 dnssd
->TXTRecordGetBytesPtr(&txtRecord
),
265 /* Deallocate TXT record */
266 dnssd
->TXTRecordDeallocate(&txtRecord
);
271 dnssd_register_airplay(dnssd_t
*dnssd
, const char *name
, unsigned short port
, const char *hwaddr
, int hwaddrlen
)
273 TXTRecordRef txtRecord
;
274 char deviceid
[3*MAX_HWADDR_LEN
];
282 /* Convert hardware address to string */
283 ret
= utils_hwaddr_airplay(deviceid
, sizeof(deviceid
), hwaddr
, hwaddrlen
);
285 /* FIXME: handle better */
289 features
[sizeof(features
)-1] = '\0';
290 snprintf(features
, sizeof(features
)-1, "0x%x", GLOBAL_FEATURES
);
292 dnssd
->TXTRecordCreate(&txtRecord
, 0, NULL
);
293 dnssd
->TXTRecordSetValue(&txtRecord
, "deviceid", strlen(deviceid
), deviceid
);
294 dnssd
->TXTRecordSetValue(&txtRecord
, "features", strlen(features
), features
);
295 dnssd
->TXTRecordSetValue(&txtRecord
, "model", strlen(GLOBAL_MODEL
), GLOBAL_MODEL
);
297 /* Register the service */
298 dnssd
->DNSServiceRegister(&dnssd
->airplayService
, 0, 0,
299 name
, "_airplay._tcp",
302 dnssd
->TXTRecordGetLength(&txtRecord
),
303 dnssd
->TXTRecordGetBytesPtr(&txtRecord
),
306 /* Deallocate TXT record */
307 dnssd
->TXTRecordDeallocate(&txtRecord
);
312 dnssd_unregister_raop(dnssd_t
*dnssd
)
316 if (!dnssd
->raopService
) {
320 dnssd
->DNSServiceRefDeallocate(dnssd
->raopService
);
321 dnssd
->raopService
= NULL
;
325 dnssd_unregister_airplay(dnssd_t
*dnssd
)
329 if (!dnssd
->airplayService
) {
333 dnssd
->DNSServiceRefDeallocate(dnssd
->airplayService
);
334 dnssd
->airplayService
= NULL
;