-
Notifications
You must be signed in to change notification settings - Fork 909
/
pv_branch.c
551 lines (508 loc) · 12.9 KB
/
pv_branch.c
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
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
/*
* Copyright (C) 2008 Daniel-Constantin Mierla (asipto.com)
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version
*
* Kamailio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "../../parser/parse_uri.h"
#include "../../dset.h"
#include "../../onsend.h"
#include "../../socket_info.h"
#include "pv_core.h"
#include "pv_branch.h"
int pv_get_branchx(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
int idx = 0;
int idxf = 0;
branch_t *br;
/* get the index */
if(pv_get_spec_index(msg, param, &idx, &idxf)!=0)
{
LM_ERR("invalid index\n");
return pv_get_null(msg, param, res);
}
br = get_sip_branch(idx);
/* branch(count) doesn't need a valid branch, everything else does */
if(br->len == 0 && ( param->pvn.u.isname.name.n != 5/* count*/ ))
{
LM_ERR("error accessing branch [%d]\n", idx);
return pv_get_null(msg, param, res);
}
switch(param->pvn.u.isname.name.n)
{
case 1: /* dst uri */
if(br->dst_uri_len==0)
return pv_get_null(msg, param, res);
return pv_get_strlval(msg, param, res, br->dst_uri, br->dst_uri_len);
case 2: /* path */
if(br->path_len==0)
return pv_get_null(msg, param, res);
return pv_get_strlval(msg, param, res, br->path, br->path_len);
case 3: /* Q */
if(br->q == Q_UNSPECIFIED)
return pv_get_null(msg, param, res);
return pv_get_sintval(msg, param, res, br->q);
case 4: /* send socket */
if(br->force_send_socket!=0)
return pv_get_strval(msg, param, res, &br->force_send_socket->sock_str);
return pv_get_null(msg, param, res);
case 5: /* count */
return pv_get_uintval(msg, param, res, nr_branches);
case 6: /* flags */
return pv_get_uintval(msg, param, res, br->flags);
case 7: /* ruid */
if(br->ruid_len==0)
return pv_get_null(msg, param, res);
return pv_get_strlval(msg, param, res, br->ruid, br->ruid_len);
case 8: /* location_ua */
if(br->location_ua_len==0)
return pv_get_null(msg, param, res);
return pv_get_strlval(msg, param, res, br->location_ua, br->location_ua_len);
default:
/* 0 - uri */
return pv_get_strlval(msg, param, res, br->uri, br->len);
}
return 0;
}
int pv_set_branchx(struct sip_msg* msg, pv_param_t *param,
int op, pv_value_t *val)
{
int idx = 0;
int idxf = 0;
branch_t *br;
struct socket_info *si;
int port, proto;
str host;
char backup;
if(msg==NULL || param==NULL)
{
LM_ERR("bad parameters\n");
return -1;
}
/* get the index */
if(pv_get_spec_index(msg, param, &idx, &idxf)!=0)
{
LM_ERR("invalid index\n");
return -1;
}
br = get_sip_branch(idx);
if(br==NULL)
{
LM_DBG("no branch to operate on\n");
return -1;
}
switch(param->pvn.u.isname.name.n)
{
case 1: /* dst uri */
if(val==NULL || (val->flags&PV_VAL_NULL))
{
br->dst_uri[0] = '\0';
br->dst_uri_len = 0;
break;
}
if(!(val->flags&PV_VAL_STR))
{
LM_ERR("str value required to set branch dst uri\n");
return -1;
}
if(val->rs.len<=0)
{
br->dst_uri[0] = '\0';
br->dst_uri_len = 0;
break;
}
if (unlikely(val->rs.len > MAX_URI_SIZE - 1))
{
LM_ERR("too long dst uri: %.*s\n",
val->rs.len, val->rs.s);
return -1;
}
memcpy(br->dst_uri, val->rs.s, val->rs.len);
br->dst_uri[val->rs.len] = 0;
br->dst_uri_len = val->rs.len;
break;
case 2: /* path */
if(val==NULL || (val->flags&PV_VAL_NULL))
{
br->path[0] = '\0';
br->path_len = 0;
break;
}
if(!(val->flags&PV_VAL_STR))
{
LM_ERR("str value required to set branch path\n");
return -1;
}
if(val->rs.len<=0)
{
br->path[0] = '\0';
br->path_len = 0;
break;
}
if (unlikely(val->rs.len > MAX_PATH_SIZE - 1))
{
LM_ERR("path too long: %.*s\n",
val->rs.len, val->rs.s);
return -1;
}
memcpy(br->path, val->rs.s, val->rs.len);
br->path[val->rs.len] = 0;
br->path_len = val->rs.len;
break;
case 3: /* Q */
if(val==NULL || (val->flags&PV_VAL_NULL))
{
br->q = Q_UNSPECIFIED;
break;
}
if(!(val->flags&PV_VAL_INT))
{
LM_ERR("int value required to set branch q\n");
return -1;
}
br->q = val->ri;
break;
case 4: /* send socket */
if(val==NULL || (val->flags&PV_VAL_NULL))
{
br->force_send_socket = NULL;
break;
}
if(!(val->flags&PV_VAL_STR))
{
LM_ERR("str value required to set branch send sock\n");
return -1;
}
if(val->rs.len<=0)
{
br->force_send_socket = NULL;
break;
}
backup = val->rs.s[val->rs.len];
val->rs.s[val->rs.len] = '\0';
if (parse_phostport(val->rs.s, &host.s, &host.len, &port,
&proto) < 0)
{
LM_ERR("invalid socket specification\n");
val->rs.s[val->rs.len] = backup;
return -1;
}
val->rs.s[val->rs.len] = backup;
si = grep_sock_info(&host, (unsigned short)port,
(unsigned short)proto);
if (si!=NULL)
{
br->force_send_socket = si;
} else {
LM_WARN("no socket found to match [%.*s]\n",
val->rs.len, val->rs.s);
br->force_send_socket = NULL;
}
break;
case 5: /* count */
/* do nothing - cannot set the branch counter */
break;
case 6: /* flags */
if(val==NULL || (val->flags&PV_VAL_NULL))
{
br->flags = 0;
break;
}
if(!(val->flags&PV_VAL_INT))
{
LM_ERR("int value required to set branch flags\n");
return -1;
}
br->flags = val->ri;
break;
case 7: /* ruid */
/* do nothing - cannot set the ruid */
break;
case 8: /* location_ua */
/* do nothing - cannot set the location_ua */
break;
default:
/* 0 - uri */
if(val==NULL || (val->flags&PV_VAL_NULL))
{
drop_sip_branch(idx);
} else {
if(!(val->flags&PV_VAL_STR))
{
LM_ERR("str value required to set branch uri\n");
return -1;
}
if(val->rs.len<=0)
{
drop_sip_branch(idx);
} else {
if (unlikely(val->rs.len > MAX_URI_SIZE - 1))
{
LM_ERR("too long r-uri: %.*s\n",
val->rs.len, val->rs.s);
return -1;
}
memcpy(br->uri, val->rs.s, val->rs.len);
br->uri[val->rs.len] = 0;
br->len = val->rs.len;
}
}
}
return 0;
}
int pv_parse_branchx_name(pv_spec_p sp, str *in)
{
if(sp==NULL || in==NULL || in->len<=0)
return -1;
switch(in->len)
{
case 3:
if(strncmp(in->s, "uri", 3)==0)
sp->pvp.pvn.u.isname.name.n = 0;
else goto error;
break;
case 7:
if(strncmp(in->s, "dst_uri", 7)==0)
sp->pvp.pvn.u.isname.name.n = 1;
else goto error;
break;
case 4:
if(strncmp(in->s, "path", 4)==0)
sp->pvp.pvn.u.isname.name.n = 2;
else if (strncmp(in->s, "ruid", 4)==0)
sp->pvp.pvn.u.isname.name.n = 7;
else goto error;
break;
case 1:
if(*in->s=='q' || *in->s=='Q')
sp->pvp.pvn.u.isname.name.n = 3;
else goto error;
break;
case 11:
if(strncmp(in->s, "send_socket", 11)==0)
sp->pvp.pvn.u.isname.name.n = 4;
else if(strncmp(in->s, "location_ua", 11)==0)
sp->pvp.pvn.u.isname.name.n = 8;
else goto error;
break;
case 5:
if(strncmp(in->s, "count", 5)==0)
sp->pvp.pvn.u.isname.name.n = 5;
else if(strncmp(in->s, "flags", 5)==0)
sp->pvp.pvn.u.isname.name.n = 6;
else goto error;
break;
default:
goto error;
}
sp->pvp.pvn.type = PV_NAME_INTSTR;
sp->pvp.pvn.u.isname.type = 0;
return 0;
error:
LM_ERR("unknown PV branch name %.*s\n", in->len, in->s);
return -1;
}
int pv_get_sndfrom(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
struct onsend_info* snd_inf;
str s;
snd_inf=get_onsend_info();
if (! likely(snd_inf && snd_inf->send_sock))
return pv_get_null(msg, param, res);
switch(param->pvn.u.isname.name.n)
{
case 1: /* af */
return pv_get_uintval(msg, param, res,
(int)snd_inf->send_sock->address.af);
case 2: /* port */
return pv_get_uintval(msg, param, res,
(int)snd_inf->send_sock->port_no);
case 3: /* proto */
return pv_get_uintval(msg, param, res,
(int)snd_inf->send_sock->proto);
case 4: /* buf */
s.s = snd_inf->buf;
s.len = snd_inf->len;
return pv_get_strval(msg, param, res, &s);
case 5: /* len */
return pv_get_uintval(msg, param, res,
(int)snd_inf->len);
default:
/* 0 - ip */
return pv_get_strval(msg, param, res,
&snd_inf->send_sock->address_str);
}
return 0;
}
int pv_get_sndto(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
struct onsend_info* snd_inf;
struct ip_addr ip;
str s;
snd_inf=get_onsend_info();
if (! likely(snd_inf && snd_inf->send_sock))
return pv_get_null(msg, param, res);
switch(param->pvn.u.isname.name.n)
{
case 1: /* af */
return pv_get_uintval(msg, param, res,
(int)snd_inf->send_sock->address.af);
case 2: /* port */
return pv_get_uintval(msg, param, res,
(int)su_getport(snd_inf->to));
case 3: /* proto */
return pv_get_uintval(msg, param, res,
(int)snd_inf->send_sock->proto);
case 4: /* buf */
s.s = snd_inf->buf;
s.len = snd_inf->len;
return pv_get_strval(msg, param, res, &s);
case 5: /* len */
return pv_get_uintval(msg, param, res,
(int)snd_inf->len);
default:
/* 0 - ip */
su2ip_addr(&ip, snd_inf->to);
s.s = ip_addr2a(&ip);
s.len = strlen(s.s);
return pv_get_strval(msg, param, res, &s);
}
return 0;
}
int pv_parse_snd_name(pv_spec_p sp, str *in)
{
if(sp==NULL || in==NULL || in->len<=0)
return -1;
switch(in->len)
{
case 2:
if(strncmp(in->s, "ip", 2)==0)
sp->pvp.pvn.u.isname.name.n = 0;
else if(strncmp(in->s, "af", 2)==0)
sp->pvp.pvn.u.isname.name.n = 1;
else goto error;
break;
case 3:
if(strncmp(in->s, "buf", 3)==0)
sp->pvp.pvn.u.isname.name.n = 4;
else if(strncmp(in->s, "len", 3)==0)
sp->pvp.pvn.u.isname.name.n = 5;
else goto error;
break;
case 4:
if(strncmp(in->s, "port", 4)==0)
sp->pvp.pvn.u.isname.name.n = 2;
else goto error;
break;
case 5:
if(strncmp(in->s, "proto", 5)==0)
sp->pvp.pvn.u.isname.name.n = 3;
else goto error;
break;
default:
goto error;
}
sp->pvp.pvn.type = PV_NAME_INTSTR;
sp->pvp.pvn.u.isname.type = 0;
return 0;
error:
LM_ERR("unknown PV snd name %.*s\n", in->len, in->s);
return -1;
}
int pv_get_nh(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
struct sip_uri parsed_uri;
str uri;
if(msg==NULL || res==NULL)
return -1;
if(msg->first_line.type == SIP_REPLY) /* REPLY doesnt have r/d-uri */
return pv_get_null(msg, param, res);
if (msg->dst_uri.s != NULL && msg->dst_uri.len>0)
{
uri = msg->dst_uri;
} else {
if (msg->new_uri.s!=NULL && msg->new_uri.len>0)
{
uri = msg->new_uri;
} else {
uri = msg->first_line.u.request.uri;
}
}
if(param->pvn.u.isname.name.n==0) /* uri */
{
return pv_get_strval(msg, param, res, &uri);
}
if(parse_uri(uri.s, uri.len, &parsed_uri)!=0)
{
LM_ERR("failed to parse nh uri [%.*s]\n", uri.len, uri.s);
return pv_get_null(msg, param, res);
}
if(param->pvn.u.isname.name.n==1) /* username */
{
if(parsed_uri.user.s==NULL || parsed_uri.user.len<=0)
return pv_get_null(msg, param, res);
return pv_get_strval(msg, param, res, &parsed_uri.user);
} else if(param->pvn.u.isname.name.n==2) /* domain */ {
if(parsed_uri.host.s==NULL || parsed_uri.host.len<=0)
return pv_get_null(msg, param, res);
return pv_get_strval(msg, param, res, &parsed_uri.host);
} else if(param->pvn.u.isname.name.n==3) /* port */ {
if(parsed_uri.port.s==NULL)
return pv_get_5060(msg, param, res);
return pv_get_strintval(msg, param, res, &parsed_uri.port,
(int)parsed_uri.port_no);
} else if(param->pvn.u.isname.name.n==4) /* protocol */ {
if(parsed_uri.transport_val.s==NULL)
return pv_get_udp(msg, param, res);
return pv_get_strintval(msg, param, res, &parsed_uri.transport_val,
(int)parsed_uri.proto);
}
LM_ERR("unknown specifier\n");
return pv_get_null(msg, param, res);
}
int pv_parse_nh_name(pv_spec_p sp, str *in)
{
if(sp==NULL || in==NULL || in->len<=0)
return -1;
switch(in->len)
{
case 1:
if(strncmp(in->s, "u", 1)==0)
sp->pvp.pvn.u.isname.name.n = 0;
else if(strncmp(in->s, "U", 1)==0)
sp->pvp.pvn.u.isname.name.n = 1;
else if(strncmp(in->s, "d", 1)==0)
sp->pvp.pvn.u.isname.name.n = 2;
else if(strncmp(in->s, "p", 1)==0)
sp->pvp.pvn.u.isname.name.n = 3;
else if(strncmp(in->s, "P", 1)==0)
sp->pvp.pvn.u.isname.name.n = 4;
else goto error;
break;
default:
goto error;
}
sp->pvp.pvn.type = PV_NAME_INTSTR;
sp->pvp.pvn.u.isname.type = 0;
return 0;
error:
LM_ERR("unknown PV nh name %.*s\n", in->len, in->s);
return -1;
}