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
31 # define DNSSD_STDCALL
34 # if !defined(EFI32) && !defined(EFI64)
35 # define DNSSD_STDCALL __stdcall
37 # define DNSSD_STDCALL
40 typedef struct _DNSServiceRef_t
*DNSServiceRef
;
41 typedef union _TXTRecordRef_t
{ char PrivateData
[16]; char *ForceNaturalAlignment
; } TXTRecordRef
;
43 typedef uint32_t DNSServiceFlags
;
44 typedef int32_t DNSServiceErrorType
;
46 typedef void (DNSSD_STDCALL
*DNSServiceRegisterReply
)
49 DNSServiceFlags flags
,
50 DNSServiceErrorType errorCode
,
58 typedef DNSServiceErrorType (DNSSD_STDCALL
*DNSServiceRegister_t
)
61 DNSServiceFlags flags
,
62 uint32_t interfaceIndex
,
69 const void *txtRecord
,
70 DNSServiceRegisterReply callBack
,
73 typedef void (DNSSD_STDCALL
*DNSServiceRefDeallocate_t
)(DNSServiceRef sdRef
);
74 typedef void (DNSSD_STDCALL
*TXTRecordCreate_t
)
76 TXTRecordRef
*txtRecord
,
80 typedef void (DNSSD_STDCALL
*TXTRecordDeallocate_t
)(TXTRecordRef
*txtRecord
);
81 typedef DNSServiceErrorType (DNSSD_STDCALL
*TXTRecordSetValue_t
)
83 TXTRecordRef
*txtRecord
,
88 typedef uint16_t (DNSSD_STDCALL
*TXTRecordGetLength_t
)(const TXTRecordRef
*txtRecord
);
89 typedef const void * (DNSSD_STDCALL
*TXTRecordGetBytesPtr_t
)(const TXTRecordRef
*txtRecord
);
97 DNSServiceRegister_t DNSServiceRegister
;
98 DNSServiceRefDeallocate_t DNSServiceRefDeallocate
;
99 TXTRecordCreate_t TXTRecordCreate
;
100 TXTRecordSetValue_t TXTRecordSetValue
;
101 TXTRecordGetLength_t TXTRecordGetLength
;
102 TXTRecordGetBytesPtr_t TXTRecordGetBytesPtr
;
103 TXTRecordDeallocate_t TXTRecordDeallocate
;
105 char hwaddr
[MAX_HWADDR_LEN
];
108 DNSServiceRef raopService
;
109 DNSServiceRef airplayService
;
115 dnssd_init(const char *hwaddr
, int hwaddrlen
, int *error
)
119 if (error
) *error
= DNSSD_ERROR_NOERROR
;
120 if (hwaddrlen
> MAX_HWADDR_LEN
) {
121 if (error
) *error
= DNSSD_ERROR_HWADDRLEN
;
125 dnssd
= calloc(1, sizeof(dnssd_t
));
127 if (error
) *error
= DNSSD_ERROR_OUTOFMEM
;
132 dnssd
->module
= LoadLibraryA("dnssd.dll");
133 if (!dnssd
->module
) {
134 if (error
) *error
= DNSSD_ERROR_LIBNOTFOUND
;
138 dnssd
->DNSServiceRegister
= (DNSServiceRegister_t
)GetProcAddress(dnssd
->module
, "DNSServiceRegister");
139 dnssd
->DNSServiceRefDeallocate
= (DNSServiceRefDeallocate_t
)GetProcAddress(dnssd
->module
, "DNSServiceRefDeallocate");
140 dnssd
->TXTRecordCreate
= (TXTRecordCreate_t
)GetProcAddress(dnssd
->module
, "TXTRecordCreate");
141 dnssd
->TXTRecordSetValue
= (TXTRecordSetValue_t
)GetProcAddress(dnssd
->module
, "TXTRecordSetValue");
142 dnssd
->TXTRecordGetLength
= (TXTRecordGetLength_t
)GetProcAddress(dnssd
->module
, "TXTRecordGetLength");
143 dnssd
->TXTRecordGetBytesPtr
= (TXTRecordGetBytesPtr_t
)GetProcAddress(dnssd
->module
, "TXTRecordGetBytesPtr");
144 dnssd
->TXTRecordDeallocate
= (TXTRecordDeallocate_t
)GetProcAddress(dnssd
->module
, "TXTRecordDeallocate");
146 if (!dnssd
->DNSServiceRegister
|| !dnssd
->DNSServiceRefDeallocate
|| !dnssd
->TXTRecordCreate
||
147 !dnssd
->TXTRecordSetValue
|| !dnssd
->TXTRecordGetLength
|| !dnssd
->TXTRecordGetBytesPtr
||
148 !dnssd
->TXTRecordDeallocate
) {
149 if (error
) *error
= DNSSD_ERROR_PROCNOTFOUND
;
150 FreeLibrary(dnssd
->module
);
155 dnssd
->DNSServiceRegister
= &DNSServiceRegister
;
156 dnssd
->DNSServiceRefDeallocate
= &DNSServiceRefDeallocate
;
157 dnssd
->TXTRecordCreate
= &TXTRecordCreate
;
158 dnssd
->TXTRecordSetValue
= &TXTRecordSetValue
;
159 dnssd
->TXTRecordGetLength
= &TXTRecordGetLength
;
160 dnssd
->TXTRecordGetBytesPtr
= &TXTRecordGetBytesPtr
;
161 dnssd
->TXTRecordDeallocate
= &TXTRecordDeallocate
;
164 memcpy(dnssd
->hwaddr
, hwaddr
, hwaddrlen
);
165 dnssd
->hwaddrlen
= hwaddrlen
;
171 dnssd_destroy(dnssd_t
*dnssd
)
175 FreeLibrary(dnssd
->module
);
182 dnssd_register_raop(dnssd_t
*dnssd
, const char *name
, unsigned short port
)
184 TXTRecordRef txtRecord
;
185 char servname
[MAX_SERVNAME
];
190 dnssd
->TXTRecordCreate(&txtRecord
, 0, NULL
);
191 dnssd
->TXTRecordSetValue(&txtRecord
, "txtvers", strlen(RAOP_TXTVERS
), RAOP_TXTVERS
);
192 dnssd
->TXTRecordSetValue(&txtRecord
, "ch", strlen(RAOP_CH
), RAOP_CH
);
193 dnssd
->TXTRecordSetValue(&txtRecord
, "cn", strlen(RAOP_CN
), RAOP_CN
);
194 dnssd
->TXTRecordSetValue(&txtRecord
, "et", strlen(RAOP_ET
), RAOP_ET
);
195 dnssd
->TXTRecordSetValue(&txtRecord
, "sv", strlen(RAOP_SV
), RAOP_SV
);
196 dnssd
->TXTRecordSetValue(&txtRecord
, "da", strlen(RAOP_DA
), RAOP_DA
);
197 dnssd
->TXTRecordSetValue(&txtRecord
, "sr", strlen(RAOP_SR
), RAOP_SR
);
198 dnssd
->TXTRecordSetValue(&txtRecord
, "ss", strlen(RAOP_SS
), RAOP_SS
);
199 dnssd
->TXTRecordSetValue(&txtRecord
, "pw", strlen(RAOP_PW
), RAOP_PW
);
200 dnssd
->TXTRecordSetValue(&txtRecord
, "vn", strlen(RAOP_VN
), RAOP_VN
);
201 dnssd
->TXTRecordSetValue(&txtRecord
, "tp", strlen(RAOP_TP
), RAOP_TP
);
202 dnssd
->TXTRecordSetValue(&txtRecord
, "md", strlen(RAOP_MD
), RAOP_MD
);
203 dnssd
->TXTRecordSetValue(&txtRecord
, "vs", strlen(GLOBAL_VERSION
), GLOBAL_VERSION
);
204 dnssd
->TXTRecordSetValue(&txtRecord
, "am", strlen(RAOP_AM
), RAOP_AM
);
205 dnssd
->TXTRecordSetValue(&txtRecord
, "sf", strlen(RAOP_SF
), RAOP_SF
);
207 /* Convert hardware address to string */
208 ret
= utils_hwaddr_raop(servname
, sizeof(servname
), dnssd
->hwaddr
, dnssd
->hwaddrlen
);
210 /* FIXME: handle better */
214 /* Check that we have bytes for 'hw@name' format */
215 if (sizeof(servname
) < strlen(servname
)+1+strlen(name
)+1) {
216 /* FIXME: handle better */
220 strncat(servname
, "@", sizeof(servname
)-strlen(servname
)-1);
221 strncat(servname
, name
, sizeof(servname
)-strlen(servname
)-1);
223 /* Register the service */
224 dnssd
->DNSServiceRegister(&dnssd
->raopService
, 0, 0,
225 servname
, "_raop._tcp",
228 dnssd
->TXTRecordGetLength(&txtRecord
),
229 dnssd
->TXTRecordGetBytesPtr(&txtRecord
),
232 /* Deallocate TXT record */
233 dnssd
->TXTRecordDeallocate(&txtRecord
);
238 dnssd_register_airplay(dnssd_t
*dnssd
, const char *name
, unsigned short port
)
240 TXTRecordRef txtRecord
;
241 char deviceid
[3*MAX_HWADDR_LEN
];
247 /* Convert hardware address to string */
248 ret
= utils_hwaddr_airplay(deviceid
, sizeof(deviceid
), dnssd
->hwaddr
, dnssd
->hwaddrlen
);
250 /* FIXME: handle better */
254 features
[sizeof(features
)-1] = '\0';
255 snprintf(features
, sizeof(features
)-1, "0x%x", GLOBAL_FEATURES
);
257 dnssd
->TXTRecordCreate(&txtRecord
, 0, NULL
);
258 dnssd
->TXTRecordSetValue(&txtRecord
, "deviceid", strlen(deviceid
), deviceid
);
259 dnssd
->TXTRecordSetValue(&txtRecord
, "features", strlen(features
), features
);
260 dnssd
->TXTRecordSetValue(&txtRecord
, "model", strlen(GLOBAL_MODEL
), GLOBAL_MODEL
);
262 /* Register the service */
263 dnssd
->DNSServiceRegister(&dnssd
->airplayService
, 0, 0,
264 name
, "_airplay._tcp",
267 dnssd
->TXTRecordGetLength(&txtRecord
),
268 dnssd
->TXTRecordGetBytesPtr(&txtRecord
),
271 /* Deallocate TXT record */
272 dnssd
->TXTRecordDeallocate(&txtRecord
);
277 dnssd_unregister_raop(dnssd_t
*dnssd
)
281 if (!dnssd
->raopService
) {
285 dnssd
->DNSServiceRefDeallocate(dnssd
->raopService
);
286 dnssd
->raopService
= NULL
;
290 dnssd_unregister_airplay(dnssd_t
*dnssd
)
294 if (!dnssd
->airplayService
) {
298 dnssd
->DNSServiceRefDeallocate(dnssd
->airplayService
);
299 dnssd
->airplayService
= NULL
;