-
Notifications
You must be signed in to change notification settings - Fork 564
/
dispatcher.c
1577 lines (1295 loc) · 43 KB
/
dispatcher.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
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/**
* dispatcher module -- stateless load balancing
*
* Copyright (C) 2004-2005 FhG Fokus
* Copyright (C) 2006-2010 Voice Sistem SRL
*
* This file is part of opensips, a free SIP server.
*
* opensips 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
*
* opensips 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include "../../sr_module.h"
#include "../../mi/mi.h"
#include "../../dprint.h"
#include "../../error.h"
#include "../../trim.h"
#include "../../route.h"
#include "../../status_report.h"
#include "../../mem/mem.h"
#include "../../mod_fix.h"
#include "../../db/db.h"
#include "../freeswitch/fs_api.h"
#include "dispatch.h"
#include "ds_bl.h"
#include "ds_fixups.h"
#include "ds_clustering.h"
#define DS_SET_ID_COL "setid"
#define DS_DEST_URI_COL "destination"
#define DS_DEST_SOCK_COL "socket"
#define DS_DEST_STATE_COL "state"
#define DS_DEST_WEIGHT_COL "weight"
#define DS_DEST_PRIO_COL "priority"
#define DS_DEST_ATTRS_COL "attrs"
#define DS_DEST_DESCRIPTION_COL "description"
#define DS_DEST_PROBE_MODE_COL "probe_mode"
#define DS_TABLE_NAME "dispatcher"
#define DS_PARTITION_DELIM ':'
/** parameters */
static str pvar_algo_param = str_init("");
str hash_pvar_param = {NULL, 0};
str algo_route_param = {NULL, 0};
pv_elem_t * hash_param_model = NULL;
int probing_threshold = 3; /* number of failed requests, before a destination
is taken into probing */
str ds_ping_method = {"OPTIONS",7};
str ds_ping_from = {"sip:dispatcher@localhost", 24};
static int ds_ping_interval = 0;
/* no MAX-FWD enforced from the module */
int ds_ping_maxfwd = -1;
int ds_probing_mode = 0;
int ds_persistent_state = 1;
int_list_t *ds_probing_list = NULL;
/* db partiton info */
typedef struct _ds_db_head
{
str partition_name;
str db_url;
str table_name;
str dst_avp;
str grp_avp;
str cnt_avp;
str sock_avp;
str attrs_avp;
str script_attrs_avp;
struct _ds_db_head *next;
} ds_db_head_t;
ds_db_head_t default_db_head = {
str_init(DS_DEFAULT_PARTITION_NAME),
{NULL, -1},
{NULL, -1},
{NULL, -1},
{NULL, -1},
{NULL, -1},
{NULL, -1},
{NULL, -1},
{NULL, -1},
NULL
};
ds_db_head_t *ds_db_heads = NULL;
/* status-report group for dispatcher partitions */
void *ds_srg=NULL;
/* may be used to avoid the undesired loading of the standard table */
str df_part_override;
typedef struct {
str name;
str default_value;
str* (*getter_func)(ds_db_head_t*);
} partition_specific_param_t;
#define DEF_GETTER_FUNC(PARAM_FIELD) str* getter_ ## PARAM_FIELD (ds_db_head_t \
*head) { \
return &(head-> PARAM_FIELD);}
#define GETTER_FUNC(PARAM_FIELD) &getter_ ## PARAM_FIELD
#define PARTITION_SPECIFIC_PARAM(PARAM_NAME, DEFAULT_VALUE) \
{str_init(#PARAM_NAME), str_init(DEFAULT_VALUE), GETTER_FUNC(PARAM_NAME)}
/*db common attributes*/
str ds_set_id_col = str_init(DS_SET_ID_COL);
str ds_dest_uri_col = str_init(DS_DEST_URI_COL);
str ds_dest_sock_col = str_init(DS_DEST_SOCK_COL);
str ds_dest_state_col = str_init(DS_DEST_STATE_COL);
str ds_dest_weight_col= str_init(DS_DEST_WEIGHT_COL);
str ds_dest_prio_col = str_init(DS_DEST_PRIO_COL);
str ds_dest_attrs_col = str_init(DS_DEST_ATTRS_COL);
str ds_dest_description_col = str_init(DS_DEST_DESCRIPTION_COL);
str ds_dest_probe_mode_col = str_init(DS_DEST_PROBE_MODE_COL);
str ds_setid_pvname = {NULL, 0};
pv_spec_t ds_setid_pv;
static str options_reply_codes_str= {0, 0};
static int* options_reply_codes = NULL;
static int options_codes_no;
static str probing_sock_s;
struct socket_info *probing_sock = NULL;
ds_partition_t *partitions = NULL, *default_partition = NULL;
/* event */
static str dispatcher_event = str_init("E_DISPATCHER_STATUS");
event_id_t dispatch_evi_id;
int fetch_freeswitch_stats;
int max_freeswitch_weight = 100;
/** module functions */
static int mod_init(void);
static int ds_child_init(int rank);
static int w_ds_select_dst(struct sip_msg *msg, int *set, int *alg,
void *flags, void *part, int *max_res);
static int w_ds_select_domain(struct sip_msg *msg, int *set, int *alg,
void *flags, void *part, int *max_res);
static int w_ds_next_dst(struct sip_msg *msg, void *part);
static int w_ds_next_domain(struct sip_msg *msg, void *part);
static int w_ds_mark_dst(struct sip_msg *msg, str *flags, void *part);
static int w_ds_count(struct sip_msg* msg, int *set, void *filter,
pv_spec_t *res_pv, void *part);
static int w_ds_is_in_list(struct sip_msg *msg, str *ip, int *port,
int *set, void *part, int *active_only, str *pattern);
static int w_ds_push_script_attrs(struct sip_msg *msg, str* script_attrs,
str *ip, int *port,int *set,void *part);
static int w_ds_get_script_attrs(struct sip_msg *msg, str *uri, int* set,
void *part, pv_spec_t *res_pv );
static void destroy(void);
mi_response_t *ds_mi_set(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *w_ds_mi_list(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *w_ds_mi_list_1(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *ds_mi_reload(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *ds_mi_reload_1(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *ds_mi_push_script_attrs(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *ds_mi_push_script_attrs_1(const mi_params_t *params,
struct mi_handler *async_hdl);
static int mi_child_init(void);
/* Parameters setters */
static int set_partition_arguments(unsigned int type, void * val);
static int set_probing_list(unsigned int type, void * val);
static cmd_export_t cmds[] = {
{"ds_select_dst", (cmd_function)w_ds_select_dst, {
{CMD_PARAM_INT, 0, 0},
{CMD_PARAM_INT, 0, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT, fixup_ds_flags, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fixup_ds_part, 0},
{CMD_PARAM_INT|CMD_PARAM_OPT, 0, 0}, {0, 0, 0}},
REQUEST_ROUTE|BRANCH_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"ds_select_domain", (cmd_function)w_ds_select_domain, {
{CMD_PARAM_INT, 0, 0},
{CMD_PARAM_INT, 0, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT, fixup_ds_flags, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fixup_ds_part, 0},
{CMD_PARAM_INT|CMD_PARAM_OPT, 0, 0}, {0, 0, 0}},
REQUEST_ROUTE|BRANCH_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"ds_next_dst", (cmd_function)w_ds_next_dst, {
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fixup_ds_part, 0},
{0, 0, 0}},
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_next_domain", (cmd_function)w_ds_next_domain, {
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fixup_ds_part, 0},
{0, 0, 0}},
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_mark_dst", (cmd_function)w_ds_mark_dst, {
{CMD_PARAM_STR|CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fixup_ds_part, 0},
{0, 0, 0}},
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_is_in_list", (cmd_function)w_ds_is_in_list, {
{CMD_PARAM_STR, 0, 0},
{CMD_PARAM_INT, 0, 0},
{CMD_PARAM_INT|CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fixup_ds_part, 0},
{CMD_PARAM_INT|CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT, 0, 0}, {0, 0, 0}},
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"ds_count", (cmd_function)w_ds_count, {
{CMD_PARAM_INT, 0, 0},
{CMD_PARAM_STR, fixup_ds_count_filter, 0},
{CMD_PARAM_VAR, 0, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fixup_ds_part, 0},
{0, 0, 0}},
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE|TIMER_ROUTE|EVENT_ROUTE},
{"ds_push_script_attrs", (cmd_function)w_ds_push_script_attrs, {
{CMD_PARAM_STR, 0, 0},
{CMD_PARAM_STR, 0, 0},
{CMD_PARAM_INT, 0, 0},
{CMD_PARAM_INT|CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fixup_ds_part, 0},
{0, 0, 0}},
ALL_ROUTES},
{"ds_get_script_attrs", (cmd_function)w_ds_get_script_attrs, {
{CMD_PARAM_STR, 0, 0},
{CMD_PARAM_INT, 0, 0},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fixup_ds_part, 0},
{CMD_PARAM_VAR, 0, 0},
{0, 0, 0}},
ALL_ROUTES},
{0,0,{{0,0,0}},0}
};
static param_export_t params[]={
{"partition", STR_PARAM | USE_FUNC_PARAM, (void*)&set_partition_arguments},
{"db_url", STR_PARAM, &default_db_head.db_url.s},
{"table_name", STR_PARAM, &default_db_head.table_name.s},
{"setid_col", STR_PARAM, &ds_set_id_col.s},
{"destination_col", STR_PARAM, &ds_dest_uri_col.s},
{"socket_col", STR_PARAM, &ds_dest_sock_col.s},
{"state_col", STR_PARAM, &ds_dest_state_col.s},
{"weight_col", STR_PARAM, &ds_dest_weight_col.s},
{"priority_col", STR_PARAM, &ds_dest_prio_col.s},
{"attrs_col", STR_PARAM, &ds_dest_attrs_col.s},
{"description_col", STR_PARAM, &ds_dest_description_col.s},
{"probe_mode_col", STR_PARAM, &ds_dest_probe_mode_col.s},
{"dst_avp", STR_PARAM, &default_db_head.dst_avp.s},
{"grp_avp", STR_PARAM, &default_db_head.grp_avp.s},
{"cnt_avp", STR_PARAM, &default_db_head.cnt_avp.s},
{"sock_avp", STR_PARAM, &default_db_head.sock_avp.s},
{"attrs_avp", STR_PARAM, &default_db_head.attrs_avp.s},
{"script_attrs_avp", STR_PARAM, &default_db_head.script_attrs_avp.s},
{"algo_route", STR_PARAM, &algo_route_param.s},
{"hash_pvar", STR_PARAM, &hash_pvar_param.s},
{"setid_pvar", STR_PARAM, &ds_setid_pvname.s},
{"pvar_algo_pattern", STR_PARAM, &pvar_algo_param.s},
{"ds_probing_threshhold", INT_PARAM, &probing_threshold},
{"ds_probing_threshold", INT_PARAM, &probing_threshold},
{"ds_ping_method", STR_PARAM, &ds_ping_method.s},
{"ds_ping_from", STR_PARAM, &ds_ping_from.s},
{"ds_ping_interval", INT_PARAM, &ds_ping_interval},
{"ds_ping_maxfwd", INT_PARAM, &ds_ping_maxfwd},
{"ds_probing_mode", INT_PARAM, &ds_probing_mode},
{"options_reply_codes", STR_PARAM, &options_reply_codes_str.s},
{"ds_probing_sock", STR_PARAM, &probing_sock_s.s},
{"ds_probing_list", STR_PARAM|USE_FUNC_PARAM, (void*)set_probing_list},
{"ds_define_blacklist", STR_PARAM|USE_FUNC_PARAM, (void*)set_ds_bl},
{"persistent_state", INT_PARAM, &ds_persistent_state},
{"fetch_freeswitch_stats", INT_PARAM, &fetch_freeswitch_stats},
{"max_freeswitch_weight", INT_PARAM, &max_freeswitch_weight},
{"cluster_id", INT_PARAM, &ds_cluster_id },
{"cluster_sharing_tag", STR_PARAM, &ds_cluster_shtag },
{"cluster_probing_mode", STR_PARAM, &ds_cluster_prob_mode_s},
{0,0,0}
};
static module_dependency_t *get_deps_ds_ping_interval(param_export_t *param)
{
if (*(int *)param->param_pointer <= 0)
return NULL;
return alloc_module_dep(MOD_TYPE_DEFAULT, "tm", DEP_ABORT);
}
static module_dependency_t *get_deps_fetch_fs_load(param_export_t *param)
{
if (*(int *)param->param_pointer <= 0)
return NULL;
return alloc_module_dep(MOD_TYPE_DEFAULT, "freeswitch", DEP_ABORT);
}
static mi_export_t mi_cmds[] = {
{ "ds_set_state", 0, 0, 0, {
{ds_mi_set, {"state", "group", "address", 0}},
{EMPTY_MI_RECIPE}}
},
{ "ds_list", 0, 0, 0, {
{w_ds_mi_list, {0}},
{w_ds_mi_list, {"partition", 0}},
{w_ds_mi_list_1, {"full", 0}},
{w_ds_mi_list_1, {"full", "partition", 0}},
{EMPTY_MI_RECIPE}}
},
{ "ds_reload", 0, 0, mi_child_init, {
{ds_mi_reload, {0}},
{ds_mi_reload_1, {"partition", 0}},
{EMPTY_MI_RECIPE}}
},
{ "ds_push_script_attrs", 0, 0, 0, {
{ds_mi_push_script_attrs, {"attrs", "ip", "port", "set", 0}},
{ds_mi_push_script_attrs_1, {"attrs", "ip", "port", "set", "partition", 0}},
{EMPTY_MI_RECIPE}}
},
{EMPTY_MI_EXPORT}
};
static dep_export_t deps = {
{ /* OpenSIPS module dependencies */
{ MOD_TYPE_SQLDB, NULL, DEP_ABORT },
{ MOD_TYPE_NULL, NULL, 0 },
},
{ /* modparam dependencies */
{ "ds_ping_interval", get_deps_ds_ping_interval },
{ "fetch_freeswitch_stats", get_deps_fetch_fs_load },
{ "cluster_id", get_deps_clusterer},
{ NULL, NULL },
},
};
/** module exports */
struct module_exports exports= {
"dispatcher",
MOD_TYPE_DEFAULT,/* class of this module */
MODULE_VERSION,
DEFAULT_DLFLAGS, /* dlopen flags */
0, /* load function */
&deps, /* OpenSIPS module dependencies */
cmds,
0,
params,
0, /* exported statistics */
mi_cmds, /* exported MI functions */
0, /* exported pseudo-variables */
0, /* exported transformations */
0, /* extra processes */
0, /* module pre-initialization function */
mod_init, /* module initialization function */
(response_function) 0,
(destroy_function) destroy,
ds_child_init, /* per-child init function */
0 /* reload confirm function */
};
DEF_GETTER_FUNC(db_url);
DEF_GETTER_FUNC(table_name);
DEF_GETTER_FUNC(dst_avp);
DEF_GETTER_FUNC(grp_avp);
DEF_GETTER_FUNC(cnt_avp);
DEF_GETTER_FUNC(sock_avp);
DEF_GETTER_FUNC(attrs_avp);
DEF_GETTER_FUNC(script_attrs_avp);
static partition_specific_param_t partition_params[] = {
{str_init("db_url"), {NULL, 0}, GETTER_FUNC(db_url)},
PARTITION_SPECIFIC_PARAM (table_name, DS_TABLE_NAME),
PARTITION_SPECIFIC_PARAM (dst_avp, "$avp(ds_dst_failover)"),
PARTITION_SPECIFIC_PARAM (grp_avp, "$avp(ds_grp_failover)"),
PARTITION_SPECIFIC_PARAM (cnt_avp, "$avp(ds_cnt_failover)"),
PARTITION_SPECIFIC_PARAM (sock_avp, "$avp(ds_sock_failover)"),
PARTITION_SPECIFIC_PARAM (attrs_avp, ""),
PARTITION_SPECIFIC_PARAM (script_attrs_avp, ""),
};
static const unsigned int partition_param_count = sizeof (partition_params) /
sizeof (partition_specific_param_t);
/*
Splits the arg from "partition_name[DELIM]value" to partition_name
and value. The arg is modified and will contain only value
*/
static int split_partition_argument(str *arg, str *partition_name)
{
char *delim_pos = memchr(arg->s, DS_PARTITION_DELIM, arg->len);
partition_name->s = NULL;
partition_name->len = 0;
if (delim_pos == NULL) {
/* No delim so the default partition is used */
return 0;
} else if (delim_pos - arg->s + 1 == arg->len){
LM_WARN("possibly empty parameter %.*s\n", arg->len, arg->s);
return 0;
} else {
switch (DS_PARTITION_DELIM) {
case ':':
if (*(delim_pos + 1) == '/'){
/* Fake delimiter as in mysql://... */
return 0;
}
/* else An actual delimiter has been found */
break;
default:
LM_CRIT("Partition delimiter %c was not properly implemented\n",
DS_PARTITION_DELIM);
return -1;
break;
}
}
partition_name->s = arg->s;
partition_name->len = delim_pos - arg->s;
arg->s = delim_pos + 1;
arg->len -= partition_name->len + 1;
trim(partition_name);
for (;arg->s[0] == ' ' && arg->len; ++arg->s, --arg->len);
return 0;
}
/*
Parse an argument "partition_name[DELIM]arg_value".
The arg string will be modified and will contain only "arg_value"
The found_head will contain the head which has the name
"partition_name"
If the head doesn't exist it will be created
*/
static int parse_partition_argument(str *arg, ds_db_head_t **found_head)
{
str partition_name;
if (split_partition_argument(arg, &partition_name) != 0)
return -1;
if (partition_name.len == 0
|| str_strcmp(&default_db_head.partition_name, &partition_name) == 0){
*found_head = &default_db_head;
return 0;
}
/* There is a partition name in arg so we won't use default head*/
ds_db_head_t *heads_it;
for (heads_it = ds_db_heads; heads_it; heads_it = heads_it->next)
if (memcmp(partition_name.s, heads_it->partition_name.s,
partition_name.len) == 0){
/* This partition already exists */
*found_head = heads_it;
return 0;
}
/* The partition does not exist - we create it */
ds_db_head_t *new_partition = pkg_malloc(sizeof (ds_db_head_t));
if (new_partition == NULL) {
LM_ERR("failed to allocate data in shm\n");
return -1;
}
/* Set default head values */
memset(new_partition, 0, sizeof(ds_db_head_t));
new_partition->next = ds_db_heads;
ds_db_heads = new_partition;
new_partition->partition_name = partition_name;
*found_head = new_partition;
return 0;
}
/* Load setids this proxy is responsible for probing into list */
static int set_probing_list(unsigned int type, void *val) {
str input = {(char*)val, strlen(val)};
if (set_list_from_string(input, &ds_probing_list) != 0 ||
ds_probing_list == NULL)
{
LM_ERR("Invalid set_probing_list input\n");
return -1;
}
return 0;
}
/* We parse the "partition" argument as: partition_name:arg1=val1; arg2=val2;*/
static int set_partition_arguments(unsigned int type, void *val)
{
static const char end_pair_delim = ';';
static const char eq_val_delim = '=';
static const str blacklist_param = str_init("ds_define_blacklist");
unsigned int i, fixed_end = 0;
str raw_line = {(char*)val, strlen(val)};
str arg, value;
ds_db_head_t *head = NULL;
if (raw_line.s[raw_line.len - 1] != end_pair_delim) {
raw_line.s[raw_line.len++] = end_pair_delim;
fixed_end = 1;
}
if (parse_partition_argument(&raw_line, &head) != 0)
return -1;
char *first_pos = raw_line.s; /* just for error messages */
char *end_pair_pos = q_memchr(raw_line.s, end_pair_delim, raw_line.len);
char *eq_pos = q_memchr(raw_line.s, eq_val_delim, raw_line.len);
if ((!end_pair_pos || !eq_pos) && head == &default_db_head) {
if (fixed_end)
raw_line.len--;
df_part_override = raw_line;
trim(&df_part_override);
if (!ZSTR(df_part_override))
return 0;
memset(&df_part_override, 0, sizeof df_part_override);
}
while (end_pair_pos != NULL && eq_pos != NULL) {
arg.s = raw_line.s;
arg.len = eq_pos - arg.s;
value.s = eq_pos + 1;
value.len = end_pair_pos - eq_pos - 1;
trim(&arg);
trim(&value);
if (arg.len <= 0 || value.len <= 0) {
LM_ERR("Wrong format in partition arguments specifier at pos %d\n",
(int)(arg.s - first_pos + 1));
return -1;
}
for (i = 0; i < partition_param_count; ++i)
if (str_strcmp(&arg, &partition_params[i].name) == 0) {
*(partition_params[i].getter_func(head)) = value;
break;
}
if ( i == partition_param_count) {
if (str_strcmp(&blacklist_param, &arg) == 0) {
value.s[value.len] = 0;
if (set_ds_bl_partition(value.s, head->partition_name) != 0)
return -1;
}
else{
/* No parameter found */
LM_ERR("No such parameter known: %.*s\n", arg.len, arg.s);
return -1;
}
}
raw_line.s = end_pair_pos + 1;
end_pair_pos = q_memchr(raw_line.s, end_pair_delim, raw_line.len);
eq_pos = q_memchr(raw_line.s, eq_val_delim, raw_line.len);
}
return 0;
}
static int partition_init(ds_db_head_t *db_head, ds_partition_t *partition)
{
/* Load stuff from DB. URL cannot be null!*/
if (db_head->db_url.s == NULL){
LM_ERR("[%.*s] DB URL is not defined!\n", db_head->partition_name.len,
db_head->partition_name.s);
return -1;
}
memset(partition, 0, sizeof(ds_partition_t));
partition->name = db_head->partition_name;
if (str_match(&partition->name, &df_part_override))
default_partition = partition;
partition->table_name = db_head->table_name;
partition->db_url = db_head->db_url;
partition->db_handle = pkg_malloc(sizeof(struct db_con_t *));
if (partition->db_handle == NULL) {
LM_ERR("Failed to allocate private data\n");
return -1;
}
*partition->db_handle = NULL;
/* handle AVPs spec */
pv_spec_t avp_spec;
if (pv_parse_spec(&db_head->dst_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->dst_avp.len, db_head->dst_avp.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &partition->dst_avp_name,
&partition->dst_avp_type)!=0) {
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->dst_avp.len,
db_head->dst_avp.s);
return -1;
}
if (pv_parse_spec(&db_head->grp_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->grp_avp.len, db_head->grp_avp.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &partition->grp_avp_name,
&partition->grp_avp_type)!=0) {
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->grp_avp.len,
db_head->grp_avp.s);
return -1;
}
if (pv_parse_spec(&db_head->cnt_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->cnt_avp.len, db_head->cnt_avp.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &partition->cnt_avp_name,
&partition->cnt_avp_type)!=0) {
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->cnt_avp.len,
db_head->cnt_avp.s);
return -1;
}
if (pv_parse_spec(&db_head->sock_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->sock_avp.len, db_head->sock_avp.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &partition->sock_avp_name,
&partition->sock_avp_type)!=0){
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->sock_avp.len,
db_head->sock_avp.s);
return -1;
}
if (db_head->attrs_avp.s && db_head->attrs_avp.len > 0) {
if (pv_parse_spec(&db_head->attrs_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->attrs_avp.len, db_head->attrs_avp.s);
return -1;
}
if (pv_get_avp_name(0, &(avp_spec.pvp), &partition->attrs_avp_name,
&partition->attrs_avp_type)!=0){
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->attrs_avp.len,
db_head->attrs_avp.s);
return -1;
}
} else {
partition->attrs_avp_name = -1;
partition->attrs_avp_type = 0;
}
if (db_head->script_attrs_avp.s && db_head->script_attrs_avp.len > 0) {
if (pv_parse_spec(&db_head->script_attrs_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s SCRIPT AVP definition\n",
db_head->script_attrs_avp.len, db_head->script_attrs_avp.s);
return -1;
}
if (pv_get_avp_name(0, &(avp_spec.pvp), &partition->script_attrs_avp_name,
&partition->script_attrs_avp_type)!=0){
LM_ERR("[%.*s]- invalid SCRIPT AVP definition\n", db_head->script_attrs_avp.len,
db_head->script_attrs_avp.s);
return -1;
}
} else {
partition->script_attrs_avp_name = -1;
partition->script_attrs_avp_type = 0;
}
return 0;
}
static int inherit_from_default_head(ds_db_head_t *head)
{
unsigned int i;
if (head == &default_db_head)
return 0;
for (i = 0; i < partition_param_count; ++i) {
str *def_param = partition_params[i].getter_func(&default_db_head);
str *p_param = partition_params[i].getter_func(head);
if (p_param->len == 0 && def_param->len > 0) {
/* Parameter not specified for function */
if (strstr(partition_params[i].name.s, "avp")) {
char *avp_end = q_memrchr(def_param->s, ')', def_param->len);
if (avp_end == NULL) {
LM_ERR ("wrong avp name %.*s\n", def_param->len,
def_param->s);
return -1;
}
p_param->len = def_param->len + 1 + head->partition_name.len;
p_param->s = pkg_malloc(p_param->len);
if (p_param->s == NULL) {
LM_ERR ("no more private memory\n");
return -1;
}
int fix_len = avp_end - def_param->s;
int rem_len = def_param->len - fix_len;
memcpy(p_param->s, def_param->s, fix_len);
p_param->s[fix_len] = '_';
memcpy(p_param->s + fix_len + 1, head->partition_name.s,
head->partition_name.len);
memcpy(p_param->s + fix_len + 1 + head->partition_name.len,
def_param->s + fix_len, rem_len);
LM_DBG("built implicit AVP spec '%.*s' for part '%.*s'\n",
p_param->len, p_param->s, head->partition_name.len,
head->partition_name.s);
} else {
memcpy(p_param, def_param, sizeof(str));
}
}
}
return 0;
}
void set_default_head_values(ds_db_head_t *head)
{
unsigned int i;
for (i = 0; i < partition_param_count; ++i) {
str *p_val = partition_params[i].getter_func(head);
if (p_val->s == NULL)
*p_val = partition_params[i].default_value;
else if (p_val->len == -1)
p_val->len = strlen(p_val -> s);
}
}
static inline int check_if_default_head_is_ok(void)
{
unsigned int i;
for (i = 0; i < partition_param_count; ++i)
if (partition_params[i].getter_func(&default_db_head)->s != NULL)
return 1;
return 0;
}
/**
* init module function
*/
static int mod_init(void)
{
ds_db_head_t *aux;
LM_DBG("initializing ...\n");
init_db_url(default_db_head.db_url, 1 /* can be null */);
if (check_if_default_head_is_ok()) {
default_db_head.next = ds_db_heads;
ds_db_heads = &default_db_head;
}
set_default_head_values(&default_db_head);
if (!ds_db_heads) {
LM_ERR("missing default partition, "
"please specify the 'db_url' parameter\n");
return -1;
}
ds_set_id_col.len = strlen(ds_set_id_col.s);
ds_dest_uri_col.len = strlen(ds_dest_uri_col.s);
ds_dest_sock_col.len = strlen(ds_dest_sock_col.s);
ds_dest_state_col.len = strlen(ds_dest_state_col.s);
ds_dest_weight_col.len = strlen(ds_dest_weight_col.s);
ds_dest_attrs_col.len = strlen(ds_dest_attrs_col.s);
if (fetch_freeswitch_stats) {
if (load_fs_api(&fs_api) == -1) {
LM_ERR("failed to load the FS API!\n");
return -1;
}
}
if(hash_pvar_param.s && (hash_pvar_param.len=strlen(hash_pvar_param.s))>0){
if(pv_parse_format(&hash_pvar_param, &hash_param_model) < 0
|| hash_param_model==NULL) {
LM_ERR("malformed PV string: %s\n", hash_pvar_param.s);
return -1;
}
} else {
hash_param_model = NULL;
}
if(ds_setid_pvname.s && (ds_setid_pvname.len=strlen(ds_setid_pvname.s))>0){
if(pv_parse_spec(&ds_setid_pvname, &ds_setid_pv)==NULL
|| !pv_is_w(&ds_setid_pv))
{
LM_ERR("[%s]- invalid setid_pvname\n", ds_setid_pvname.s);
return -1;
}
}
pvar_algo_param.len = strlen(pvar_algo_param.s);
if (pvar_algo_param.len)
ds_pvar_parse_pattern(pvar_algo_param);
if (algo_route_param.s)
algo_route_param.len = strlen(algo_route_param.s);
if (init_ds_bls()!=0) {
LM_ERR("failed to init DS blacklists\n");
return E_CFG;
}
ds_srg = sr_register_group( CHAR_INT("dispatcher"), 0 /*not public*/);
if (ds_srg==NULL) {
LM_ERR("failed to create dispatcher group for 'status-report'");
return E_UNSPEC;
}
/* Creating partitions from head */
ds_db_head_t *head_it = ds_db_heads;
while (head_it){
if (df_part_override.s && head_it == &default_db_head)
goto next_part;
if (inherit_from_default_head(head_it) != 0)
return -1;
ds_partition_t *partition = shm_malloc (sizeof(ds_partition_t));
if (partition_init(head_it, partition) != 0)
return -1;
partition->next = partitions;
partitions = partition;
if (init_ds_data(partition)!=0) {
LM_ERR("failed to init DS data holder\n");
return -1;
}
/* open DB connection to load provisioning data */
if (init_ds_db(partition)!= 0) {
LM_ERR("failed to init database support\n");
return -1;
}
/* do the actual data load */
if (ds_reload_db(partition, 1)!=0) {
LM_ERR("failed to load data from DB\n");
return -1;
}
/* close DB connection */
ds_disconnect_db(partition);
/* We keep track of corespondig default parition */
if (head_it == &default_db_head)
default_partition = partition;
next_part:
aux = head_it;
head_it = head_it->next;
if (aux != &default_db_head)
pkg_free(aux);
}
if (df_part_override.s && !default_partition) {
LM_ERR("partition '%.*s' is not defined\n",
df_part_override.len, df_part_override.s);
return -1;
}
/* Only, if the Probing-Timer is enabled the TM-API needs to be loaded: */
if (ds_ping_interval > 0)
{
load_tm_f load_tm;
if (ds_ping_from.s)
ds_ping_from.len = strlen(ds_ping_from.s);
if (ds_ping_method.s)
ds_ping_method.len = strlen(ds_ping_method.s);
/* parse the list of reply codes to be counted as success */
if(options_reply_codes_str.s) {
options_reply_codes_str.len = strlen(options_reply_codes_str.s);
if(parse_reply_codes(&options_reply_codes_str,&options_reply_codes,
&options_codes_no )< 0) {
LM_ERR("Bad format for options_reply_code parameter"
" - Need a code list separated by commas\n");
return -1;
}
}
/* parse and look for the socket to ping from */
if (probing_sock_s.s && (probing_sock_s.len = strlen(probing_sock_s.s))) {
probing_sock = parse_sock_info(&probing_sock_s);
if (probing_sock==NULL) {
LM_ERR("socket <%.*s> is not local to opensips (we must listen "
"on it\n", probing_sock_s.len, probing_sock_s.s);
return -1;
}
}
/* TM-Bindings */
load_tm=(load_tm_f)find_export("load_tm", 0);
if (load_tm==NULL) {
LM_ERR("failed to bind to the TM-Module - required for probing\n");
return -1;
}
/* let the auto-loading function load all TM stuff */
if (load_tm( &tmb ) == -1) {
LM_ERR("could not load the TM-functions - disable DS ping\n");
return -1;
}
/* Register the PING-Timer */
if (register_timer("ds-pinger", ds_check_timer, NULL,
ds_ping_interval, TIMER_FLAG_DELAY_ON_DELAY)<0) {
LM_ERR("failed to register timer for probing!\n");
return -1;
}
/* Register the weight-recalculation timer */
if (fetch_freeswitch_stats &&
register_timer("ds-update-weights", ds_update_weights, NULL,
fs_api.stats_update_interval, TIMER_FLAG_SKIP_ON_DELAY)<0) {
LM_ERR("failed to register timer for weight recalc!\n");
return -1;
}
}
/* register timer to flush the state of destination back to DB */
if (ds_persistent_state && register_timer("ds-flusher", ds_flusher_routine,
NULL, 30 , TIMER_FLAG_SKIP_ON_DELAY)<0) {
LM_ERR("failed to register timer for DB flushing!\n");
return -1;
}
dispatch_evi_id = evi_publish_event(dispatcher_event);
if (dispatch_evi_id == EVI_ERROR) {
LM_ERR("cannot register dispatcher event\n");