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.
26 #define MAX_DEVICEID 18
27 #define MAX_SERVNAME 256
33 # if !defined(EFI32) && !defined(EFI64)
34 # define DNSSD_API __stdcall
39 typedef struct _DNSServiceRef_t
*DNSServiceRef
;
40 typedef union _TXTRecordRef_t
{ char PrivateData
[16]; char *ForceNaturalAlignment
; } TXTRecordRef
;
42 typedef uint32_t DNSServiceFlags
;
43 typedef int32_t DNSServiceErrorType
;
45 typedef void (DNSSD_API
*DNSServiceRegisterReply
)
48 DNSServiceFlags flags
,
49 DNSServiceErrorType errorCode
,
57 typedef DNSServiceErrorType (DNSSD_API
*DNSServiceRegister_t
)
60 DNSServiceFlags flags
,
61 uint32_t interfaceIndex
,
68 const void *txtRecord
,
69 DNSServiceRegisterReply callBack
,
72 typedef void (DNSSD_API
*DNSServiceRefDeallocate_t
)(DNSServiceRef sdRef
);
73 typedef void (DNSSD_API
*TXTRecordCreate_t
)
75 TXTRecordRef
*txtRecord
,
79 typedef void (DNSSD_API
*TXTRecordDeallocate_t
)(TXTRecordRef
*txtRecord
);
80 typedef DNSServiceErrorType (DNSSD_API
*TXTRecordSetValue_t
)
82 TXTRecordRef
*txtRecord
,
87 typedef uint16_t (DNSSD_API
*TXTRecordGetLength_t
)(const TXTRecordRef
*txtRecord
);
88 typedef const void * (DNSSD_API
*TXTRecordGetBytesPtr_t
)(const TXTRecordRef
*txtRecord
);
96 DNSServiceRegister_t DNSServiceRegister
;
97 DNSServiceRefDeallocate_t DNSServiceRefDeallocate
;
98 TXTRecordCreate_t TXTRecordCreate
;
99 TXTRecordSetValue_t TXTRecordSetValue
;
100 TXTRecordGetLength_t TXTRecordGetLength
;
101 TXTRecordGetBytesPtr_t TXTRecordGetBytesPtr
;
102 TXTRecordDeallocate_t TXTRecordDeallocate
;
104 char hwaddr
[MAX_HWADDR_LEN
];
107 DNSServiceRef raopService
;
108 DNSServiceRef airplayService
;
114 dnssd_init(const char *hwaddr
, int hwaddrlen
, int *error
)
118 if (error
) *error
= DNSSD_ERROR_NOERROR
;
119 if (hwaddrlen
> MAX_HWADDR_LEN
) {
120 if (error
) *error
= DNSSD_ERROR_HWADDRLEN
;
124 dnssd
= calloc(1, sizeof(dnssd_t
));
126 if (error
) *error
= DNSSD_ERROR_OUTOFMEM
;
131 dnssd
->module
= LoadLibraryA("dnssd.dll");
132 if (!dnssd
->module
) {
133 if (error
) *error
= DNSSD_ERROR_LIBNOTFOUND
;
137 dnssd
->DNSServiceRegister
= (DNSServiceRegister_t
)GetProcAddress(dnssd
->module
, "DNSServiceRegister");
138 dnssd
->DNSServiceRefDeallocate
= (DNSServiceRefDeallocate_t
)GetProcAddress(dnssd
->module
, "DNSServiceRefDeallocate");
139 dnssd
->TXTRecordCreate
= (TXTRecordCreate_t
)GetProcAddress(dnssd
->module
, "TXTRecordCreate");
140 dnssd
->TXTRecordSetValue
= (TXTRecordSetValue_t
)GetProcAddress(dnssd
->module
, "TXTRecordSetValue");
141 dnssd
->TXTRecordGetLength
= (TXTRecordGetLength_t
)GetProcAddress(dnssd
->module
, "TXTRecordGetLength");
142 dnssd
->TXTRecordGetBytesPtr
= (TXTRecordGetBytesPtr_t
)GetProcAddress(dnssd
->module
, "TXTRecordGetBytesPtr");
143 dnssd
->TXTRecordDeallocate
= (TXTRecordDeallocate_t
)GetProcAddress(dnssd
->module
, "TXTRecordDeallocate");
145 if (!dnssd
->DNSServiceRegister
|| !dnssd
->DNSServiceRefDeallocate
|| !dnssd
->TXTRecordCreate
||
146 !dnssd
->TXTRecordSetValue
|| !dnssd
->TXTRecordGetLength
|| !dnssd
->TXTRecordGetBytesPtr
||
147 !dnssd
->TXTRecordDeallocate
) {
148 if (error
) *error
= DNSSD_ERROR_PROCNOTFOUND
;
149 FreeLibrary(dnssd
->module
);
154 dnssd
->DNSServiceRegister
= &DNSServiceRegister
;
155 dnssd
->DNSServiceRefDeallocate
= &DNSServiceRefDeallocate
;
156 dnssd
->TXTRecordCreate
= &TXTRecordCreate
;
157 dnssd
->TXTRecordSetValue
= &TXTRecordSetValue
;
158 dnssd
->TXTRecordGetLength
= &TXTRecordGetLength
;
159 dnssd
->TXTRecordGetBytesPtr
= &TXTRecordGetBytesPtr
;
160 dnssd
->TXTRecordDeallocate
= &TXTRecordDeallocate
;
163 memcpy(dnssd
->hwaddr
, hwaddr
, hwaddrlen
);
164 dnssd
->hwaddrlen
= hwaddrlen
;
170 dnssd_destroy(dnssd_t
*dnssd
)
174 FreeLibrary(dnssd
->module
);
181 dnssd_register_raop(dnssd_t
*dnssd
, const char *name
, unsigned short port
)
183 TXTRecordRef txtRecord
;
184 char servname
[MAX_SERVNAME
];
189 dnssd
->TXTRecordCreate(&txtRecord
, 0, NULL
);
190 dnssd
->TXTRecordSetValue(&txtRecord
, "txtvers", strlen(RAOP_TXTVERS
), RAOP_TXTVERS
);
191 dnssd
->TXTRecordSetValue(&txtRecord
, "ch", strlen(RAOP_CH
), RAOP_CH
);
192 dnssd
->TXTRecordSetValue(&txtRecord
, "cn", strlen(RAOP_CN
), RAOP_CN
);
193 dnssd
->TXTRecordSetValue(&txtRecord
, "et", strlen(RAOP_ET
), RAOP_ET
);
194 dnssd
->TXTRecordSetValue(&txtRecord
, "sv", strlen(RAOP_SV
), RAOP_SV
);
195 dnssd
->TXTRecordSetValue(&txtRecord
, "da", strlen(RAOP_DA
), RAOP_DA
);
196 dnssd
->TXTRecordSetValue(&txtRecord
, "sr", strlen(RAOP_SR
), RAOP_SR
);
197 dnssd
->TXTRecordSetValue(&txtRecord
, "ss", strlen(RAOP_SS
), RAOP_SS
);
198 dnssd
->TXTRecordSetValue(&txtRecord
, "pw", strlen(RAOP_PW
), RAOP_PW
);
199 dnssd
->TXTRecordSetValue(&txtRecord
, "vn", strlen(RAOP_VN
), RAOP_VN
);
200 dnssd
->TXTRecordSetValue(&txtRecord
, "tp", strlen(RAOP_TP
), RAOP_TP
);
201 dnssd
->TXTRecordSetValue(&txtRecord
, "md", strlen(RAOP_MD
), RAOP_MD
);
202 dnssd
->TXTRecordSetValue(&txtRecord
, "vs", strlen(GLOBAL_VERSION
), GLOBAL_VERSION
);
203 dnssd
->TXTRecordSetValue(&txtRecord
, "am", strlen(RAOP_AM
), RAOP_AM
);
204 dnssd
->TXTRecordSetValue(&txtRecord
, "sf", strlen(RAOP_SF
), RAOP_SF
);
206 /* Convert hardware address to string */
207 ret
= utils_hwaddr_raop(servname
, sizeof(servname
), dnssd
->hwaddr
, dnssd
->hwaddrlen
);
209 /* FIXME: handle better */
213 /* Check that we have bytes for 'hw@name' format */
214 if (sizeof(servname
) < strlen(servname
)+1+strlen(name
)+1) {
215 /* FIXME: handle better */
219 strncat(servname
, "@", sizeof(servname
)-strlen(servname
)-1);
220 strncat(servname
, name
, sizeof(servname
)-strlen(servname
)-1);
222 /* Register the service */
223 dnssd
->DNSServiceRegister(&dnssd
->raopService
, 0, 0,
224 servname
, "_raop._tcp",
227 dnssd
->TXTRecordGetLength(&txtRecord
),
228 dnssd
->TXTRecordGetBytesPtr(&txtRecord
),
231 /* Deallocate TXT record */
232 dnssd
->TXTRecordDeallocate(&txtRecord
);
237 dnssd_register_airplay(dnssd_t
*dnssd
, const char *name
, unsigned short port
)
239 TXTRecordRef txtRecord
;
240 char deviceid
[3*MAX_HWADDR_LEN
];
246 /* Convert hardware address to string */
247 ret
= utils_hwaddr_airplay(deviceid
, sizeof(deviceid
), dnssd
->hwaddr
, dnssd
->hwaddrlen
);
249 /* FIXME: handle better */
253 features
[sizeof(features
)-1] = '\0';
254 snprintf(features
, sizeof(features
)-1, "0x%x", GLOBAL_FEATURES
);
256 dnssd
->TXTRecordCreate(&txtRecord
, 0, NULL
);
257 dnssd
->TXTRecordSetValue(&txtRecord
, "deviceid", strlen(deviceid
), deviceid
);
258 dnssd
->TXTRecordSetValue(&txtRecord
, "features", strlen(features
), features
);
259 dnssd
->TXTRecordSetValue(&txtRecord
, "model", strlen(GLOBAL_MODEL
), GLOBAL_MODEL
);
261 /* Register the service */
262 dnssd
->DNSServiceRegister(&dnssd
->airplayService
, 0, 0,
263 name
, "_airplay._tcp",
266 dnssd
->TXTRecordGetLength(&txtRecord
),
267 dnssd
->TXTRecordGetBytesPtr(&txtRecord
),
270 /* Deallocate TXT record */
271 dnssd
->TXTRecordDeallocate(&txtRecord
);
276 dnssd_unregister_raop(dnssd_t
*dnssd
)
280 if (!dnssd
->raopService
) {
284 dnssd
->DNSServiceRefDeallocate(dnssd
->raopService
);
285 dnssd
->raopService
= NULL
;
289 dnssd_unregister_airplay(dnssd_t
*dnssd
)
293 if (!dnssd
->airplayService
) {
297 dnssd
->DNSServiceRefDeallocate(dnssd
->airplayService
);
298 dnssd
->airplayService
= NULL
;