1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
|
/*
* Dynamic wrapper for Bonjour SDK for Windows.
*
* Copyright 2018 by Apple Inc.
*
* Licensed under Apache License v2.0. See the file "LICENSE" for more
* information.
*/
//#include <cups/http-private.h>
#include <cups/thread-private.h>
#include "dns_sd.h"
/*
* Pointers for functions...
*/
static int dnssd_initialized = 0;
static _cups_mutex_t dnssd_mutex = _CUPS_MUTEX_INITIALIZER;
static DNSServiceErrorType (*dnssd_add_record)(DNSServiceRef sdRef, DNSRecordRef *RecordRef, DNSServiceFlags flags, uint16_t rrtype, uint16_t rdlen, const void *rdata, uint32_t ttl);
static DNSServiceErrorType (*dnssd_browse)(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex, const char *regtype, const char *domain, DNSServiceBrowseReply callBack, void *context);
static DNSServiceErrorType (*dnssd_construct_full_name)(char * const fullName, const char * const service, const char * const regtype, const char * const domain);
static DNSServiceErrorType (*dnssd_create_connection)(DNSServiceRef *sdRef);
static DNSServiceErrorType (*dnssd_process_result)(DNSServiceRef sdRef);
static DNSServiceErrorType (*dnssd_query_record)(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex, const char *fullname, uint16_t rrtype, uint16_t rrclass, DNSServiceQueryRecordReply callBack, void *context);
static void (*dnssd_deallocate)(DNSServiceRef sdRef);
static int (*dnssd_sock_fd)(DNSServiceRef sdRef);
static DNSServiceErrorType (*dnssd_register)(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex, const char *name, const char *regtype, const char *domain, const char *host, uint16_t port, uint16_t txtLen, const void *txtRecord, DNSServiceRegisterReply callBack, void *context);
static DNSServiceErrorType (*dnssd_remove_record)(DNSServiceRef sdRef, DNSRecordRef RecordRef, DNSServiceFlags flags);
static DNSServiceErrorType (*dnssd_resolve)(DNSServiceRef *sdRef, DNSServiceFlags flags, uint32_t interfaceIndex, const char *name, const char *regtype, const char *domain, DNSServiceResolveReply callBack, void *context);
static DNSServiceErrorType (*dnssd_update_record)(DNSServiceRef sdRef, DNSRecordRef RecordRef, DNSServiceFlags flags, uint16_t rdlen, const void *rdata, uint32_t ttl);
static void (*dnssd_txt_create)(TXTRecordRef *txtRecord, uint16_t bufferLen, void *buffer);
static void (*dnssd_txt_deallocate)(TXTRecordRef *txtRecord);
static const void *(*dnssd_txt_get_bytes_ptr)(const TXTRecordRef *txtRecord);
static uint16_t (*dnssd_txt_get_count)(uint16_t txtLen, const void *txtRecord);
static uint16_t (*dnssd_txt_get_length)(const TXTRecordRef *txtRecord);
static DNSServiceErrorType (*dnssd_txt_get_item_at_index)(uint16_t txtLen, const void *txtRecord, uint16_t itemIndex, uint16_t keyBufLen, char *key, uint8_t *valueLen, const void **value);
static const void *(*dnssd_txt_get_value_ptr)(uint16_t txtLen, const void *txtRecord, const char *key, uint8_t *valueLen);
static DNSServiceErrorType (*dnssd_txt_set_value)(TXTRecordRef *txtRecord, const char *key, uint8_t valueSize, const void *value);
/*
* Function to initialize pointers...
*/
static void
dnssd_init(void)
{
_cupsMutexLock(&dnssd_mutex);
if (!dnssd_initialized)
{
HINSTANCE dll_handle = LoadLibraryA("dnssd.dll");
if (dll_handle)
{
dnssd_add_record = (DNSServiceErrorType (*)(DNSServiceRef, DNSRecordRef *, DNSServiceFlags, uint16_t, uint16_t, const void *, uint32_t))GetProcAddress(dll_handle, "DNSServiceAddRecord");
dnssd_browse = (DNSServiceErrorType(*)(DNSServiceRef *, DNSServiceFlags, uint32_t, const char *, const char *, DNSServiceBrowseReply, void *))GetProcAddress(dll_handle, "DNSServiceBrowse");
dnssd_construct_full_name = (DNSServiceErrorType(*)(char * const, const char * const, const char * const, const char * const))GetProcAddress(dll_handle, "DNSServiceConstructFullName");
dnssd_create_connection = (DNSServiceErrorType(*)(DNSServiceRef *))GetProcAddress(dll_handle, "DNSServiceCreateConnection");
dnssd_deallocate = (DNSServiceErrorType(*)(DNSServiceRef))GetProcAddress(dll_handle, "DNSServiceRefDeallocate");
dnssd_process_result = (DNSServiceErrorType(*)(DNSServiceRef))GetProcAddress(dll_handle, "DNSServiceProcessResult");
dnssd_query_record = (DNSServiceErrorType(*)(DNSServiceRef *, DNSServiceFlags, uint32_t, const char *, uint16_t, uint16_t, DNSServiceQueryRecordReply, void *))GetProcAddress(dll_handle, "DNSServiceQueryRecord");
dnssd_register = (DNSServiceErrorType(*)(DNSServiceRef *, DNSServiceFlags, uint32_t, const char *, const char *, const char *, const char *, uint16_t, uint16_t, const void *, DNSServiceRegisterReply, void *))GetProcAddress(dll_handle, "DNSServiceRegister");
dnssd_remove_record = (DNSServiceErrorType(*)(DNSServiceRef, DNSRecordRef, DNSServiceFlags))GetProcAddress(dll_handle, "DNSServiceRemoveRecord");
dnssd_resolve = (DNSServiceErrorType(*)(DNSServiceRef *, DNSServiceFlags, uint32_t, const char *, const char *, const char *, DNSServiceResolveReply, void *))GetProcAddress(dll_handle, "DNSServiceResolve");
dnssd_sock_fd = (int(*)(DNSServiceRef))GetProcAddress(dll_handle, "DNSServiceRefSockFD");
dnssd_update_record = (DNSServiceErrorType(*)(DNSServiceRef, DNSRecordRef, DNSServiceFlags, uint16_t, const void *, uint32_t))GetProcAddress(dll_handle, "DNSServiceUpdateRecord");
dnssd_txt_create = (void (*)(TXTRecordRef *, uint16_t, void *))GetProcAddress(dll_handle, "TXTRecordCreate");
dnssd_txt_deallocate = (void (*)(TXTRecordRef *))GetProcAddress(dll_handle, "TXTRecordDeallocate");
dnssd_txt_get_bytes_ptr = (const void *(*)(const TXTRecordRef *))GetProcAddress(dll_handle, "TXTRecordGetBytesPtr");
dnssd_txt_get_count = (uint16_t (*)(uint16_t, const void *))GetProcAddress(dll_handle, "TXTRecordGetCount");
dnssd_txt_get_item_at_index = (DNSServiceErrorType (*)(uint16_t, const void *, uint16_t, uint16_t, char *, uint8_t *, const void **))GetProcAddress(dll_handle, "TXTRecordGetItemAtIndex");
dnssd_txt_get_length = (uint16_t (*)(const TXTRecordRef *))GetProcAddress(dll_handle, "TXTRecordGetLength");
dnssd_txt_get_value_ptr = (const void *(*)(uint16_t, const void *, const char *, uint8_t *))GetProcAddress(dll_handle, "TXTRecordGetValuePtr");
dnssd_txt_set_value = (DNSServiceErrorType (*)(TXTRecordRef *, const char *, uint8_t, const void *))GetProcAddress(dll_handle, "TXTRecordSetValue");
}
dnssd_initialized = 1;
}
_cupsMutexUnlock(&dnssd_mutex);
}
// DNSServiceAddRecord
DNSServiceErrorType DNSSD_API DNSServiceAddRecord
(
DNSServiceRef sdRef,
DNSRecordRef *RecordRef,
DNSServiceFlags flags,
uint16_t rrtype,
uint16_t rdlen,
const void *rdata,
uint32_t ttl
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_add_record)
return (*dnssd_add_record)(sdRef, RecordRef, flags, rrtype, rdlen, rdata, ttl);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// DNSServiceBrowse
DNSServiceErrorType DNSSD_API DNSServiceBrowse
(
DNSServiceRef *sdRef,
DNSServiceFlags flags,
uint32_t interfaceIndex,
const char *regtype,
const char *domain, /* may be NULL */
DNSServiceBrowseReply callBack,
void *context /* may be NULL */
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_browse)
return (*dnssd_browse)(sdRef, flags, interfaceIndex, regtype, domain, callBack, context);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// DNSServiceConstructFullName
DNSServiceErrorType DNSSD_API DNSServiceConstructFullName
(
char * const fullName,
const char * const service, /* may be NULL */
const char * const regtype,
const char * const domain
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_construct_full_name)
return (*dnssd_construct_full_name)(fullName, service, regtype, domain);
else
return (-1);
}
// DNSServiceCreateConnection
DNSServiceErrorType DNSSD_API DNSServiceCreateConnection(DNSServiceRef *sdRef)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_create_connection)
return (*dnssd_create_connection)(sdRef);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// DNSServiceProcessResult
DNSServiceErrorType DNSSD_API DNSServiceProcessResult(DNSServiceRef sdRef)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_process_result)
return (*dnssd_process_result)(sdRef);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// DNSServiceQueryRecord
DNSServiceErrorType DNSSD_API DNSServiceQueryRecord
(
DNSServiceRef *sdRef,
DNSServiceFlags flags,
uint32_t interfaceIndex,
const char *fullname,
uint16_t rrtype,
uint16_t rrclass,
DNSServiceQueryRecordReply callBack,
void *context /* may be NULL */
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_query_record)
return (*dnssd_query_record)(sdRef, flags, interfaceIndex, fullname, rrtype, rrclass, callBack, context);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// DNSServiceRefDeallocate
void DNSSD_API DNSServiceRefDeallocate(DNSServiceRef sdRef)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_deallocate)
(*dnssd_deallocate)(sdRef);
}
// DNSServiceRefSockFD
int DNSSD_API DNSServiceRefSockFD(DNSServiceRef sdRef)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_sock_fd)
return (*dnssd_sock_fd)(sdRef);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// DNSServiceRegister
DNSServiceErrorType DNSSD_API DNSServiceRegister
(
DNSServiceRef *sdRef,
DNSServiceFlags flags,
uint32_t interfaceIndex,
const char *name, /* may be NULL */
const char *regtype,
const char *domain, /* may be NULL */
const char *host, /* may be NULL */
uint16_t port, /* In network byte order */
uint16_t txtLen,
const void *txtRecord, /* may be NULL */
DNSServiceRegisterReply callBack, /* may be NULL */
void *context /* may be NULL */
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_register)
return (*dnssd_register)(sdRef, flags, interfaceIndex, name, regtype, domain, host, port, txtLen, txtRecord, callBack, context);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// DNSServiceRemoveRecord
DNSServiceErrorType DNSSD_API DNSServiceRemoveRecord
(
DNSServiceRef sdRef,
DNSRecordRef RecordRef,
DNSServiceFlags flags
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_remove_record)
return (*dnssd_remove_record)(sdRef, RecordRef, flags);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// DNSServiceResolve
DNSServiceErrorType DNSSD_API DNSServiceResolve
(
DNSServiceRef *sdRef,
DNSServiceFlags flags,
uint32_t interfaceIndex,
const char *name,
const char *regtype,
const char *domain,
DNSServiceResolveReply callBack,
void *context /* may be NULL */
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_resolve)
return (*dnssd_resolve)(sdRef, flags, interfaceIndex, name, regtype, domain, callBack, context);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// DNSServiceUpdateRecord
DNSServiceErrorType DNSSD_API DNSServiceUpdateRecord
(
DNSServiceRef sdRef,
DNSRecordRef RecordRef, /* may be NULL */
DNSServiceFlags flags,
uint16_t rdlen,
const void *rdata,
uint32_t ttl
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_update_record)
return (*dnssd_update_record)(sdRef, RecordRef, flags, rdlen, rdata, ttl);
else
return (kDNSServiceErr_ServiceNotRunning);
}
// TXTRecordCreate
void DNSSD_API
TXTRecordCreate(
TXTRecordRef *txtRecord,
uint16_t bufferLen,
void *buffer)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_txt_create)
(*dnssd_txt_create)(txtRecord, bufferLen, buffer);
}
// TXTRecordDeallocate
void DNSSD_API TXTRecordDeallocate
(
TXTRecordRef *txtRecord
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_txt_deallocate)
(*dnssd_txt_deallocate)(txtRecord);
}
// TXTRecordGetBytesPtr
const void * DNSSD_API TXTRecordGetBytesPtr
(
const TXTRecordRef *txtRecord
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_txt_get_bytes_ptr)
return (*dnssd_txt_get_bytes_ptr)(txtRecord);
else
return (NULL);
}
// TXTRecordGetLength
uint16_t DNSSD_API TXTRecordGetLength
(
const TXTRecordRef *txtRecord
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_txt_get_length)
return (*dnssd_txt_get_length)(txtRecord);
else
return (0);
}
// TXTRecordSetValue
DNSServiceErrorType DNSSD_API TXTRecordSetValue
(
TXTRecordRef *txtRecord,
const char *key,
uint8_t valueSize, /* may be zero */
const void *value /* may be NULL */
)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_txt_set_value)
return (*dnssd_txt_set_value)(txtRecord, key, valueSize, value);
else
return (-1);
}
// TXTRecordGetCount
uint16_t DNSSD_API
TXTRecordGetCount(
uint16_t txtLen,
const void *txtRecord)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_txt_get_count)
return (*dnssd_txt_get_count)(txtLen, txtRecord);
else
return (0);
}
// TXTRecordGetItemAtIndex
DNSServiceErrorType DNSSD_API
TXTRecordGetItemAtIndex(
uint16_t txtLen,
const void *txtRecord,
uint16_t itemIndex,
uint16_t keyBufLen,
char *key,
uint8_t *valueLen,
const void **value)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_txt_get_item_at_index)
return (*dnssd_txt_get_item_at_index)(txtLen, txtRecord, itemIndex, keyBufLen, key, valueLen, value);
else
return (-1);
}
// TXTRecordGetValuePtr
const void * DNSSD_API
TXTRecordGetValuePtr(
uint16_t txtLen,
const void *txtRecord,
const char *key,
uint8_t *valueLen)
{
if (!dnssd_initialized)
dnssd_init();
if (dnssd_txt_get_value_ptr)
return (*dnssd_txt_get_value_ptr)(txtLen, txtRecord, key, valueLen);
else
return (NULL);
}
|
