-
-
Notifications
You must be signed in to change notification settings - Fork 732
/
check_data.c
1393 lines (1250 loc) · 44 KB
/
check_data.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
/*
* Soft: Keepalived is a failover program for the LVS project
* <www.linuxvirtualserver.org>. It monitor & manipulate
* a loadbalanced server pool using multi-layer checks.
*
* Part: Healthcheckers dynamic data structure definition.
*
* Author: Alexandre Cassen, <acassen@linux-vs.org>
*
* This program 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.
*
* This program 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.
*
* Copyright (C) 2001-2017 Alexandre Cassen, <acassen@gmail.com>
*/
#include "config.h"
#include <stdint.h>
#include <stdio.h>
#include <inttypes.h>
#include "main.h"
#include "check_data.h"
#include "check_parser.h"
#include "check_api.h"
#include "check_misc.h"
#include "check_daemon.h"
#include "global_data.h"
#include "check_ssl.h"
#include "logger.h"
#include "utils.h"
#include "ipwrapper.h"
#include "parser.h"
#include "libipvs.h"
#include "keepalived_magic.h"
#include "track_file.h"
#ifdef _WITH_BFD_
#include "check_bfd.h"
#endif
/* global vars */
check_data_t *check_data = NULL;
check_data_t *old_check_data = NULL;
/* SSL facility functions */
ssl_data_t *
alloc_ssl(void)
{
ssl_data_t *ssl_data;
PMALLOC(ssl_data);
return ssl_data;
}
void
free_ssl(void)
{
ssl_data_t *ssl;
if (!check_data || !check_data->ssl)
return;
ssl = check_data->ssl;
clear_ssl(ssl);
FREE_CONST_PTR(ssl->password);
FREE_CONST_PTR(ssl->cafile);
FREE_CONST_PTR(ssl->certfile);
FREE_CONST_PTR(ssl->keyfile);
FREE(ssl);
check_data->ssl = NULL;
}
static void
dump_ssl(FILE *fp)
{
ssl_data_t *ssl = check_data->ssl;
if (!ssl->password && !ssl->cafile && !ssl->certfile && !ssl->keyfile) {
conf_write(fp, " Using autogen SSL context");
return;
}
if (ssl->password)
conf_write(fp, " Password : %s", ssl->password); /* lgtm[security] lgtm[external/cwe/cwe-313] the password is read from a file */
if (ssl->cafile)
conf_write(fp, " CA-file : %s", ssl->cafile);
if (ssl->certfile)
conf_write(fp, " Certificate file : %s", ssl->certfile);
if (ssl->keyfile)
conf_write(fp, " Key file : %s", ssl->keyfile);
}
/* Virtual server group facility functions */
static void
free_vsg_entry_list(list_head_t *l)
{
virtual_server_group_entry_t *vsge, *vsge_tmp;
list_for_each_entry_safe(vsge, vsge_tmp, l, e_list) {
list_del_init(&vsge->e_list);
FREE(vsge);
}
}
static void
dump_vsg_entry(FILE *fp, const virtual_server_group_entry_t *vsg_entry)
{
char start_addr[INET6_ADDRSTRLEN];
if (vsg_entry->is_fwmark) {
conf_write(fp, " FWMARK = %u%s", vsg_entry->vfwmark, vsg_entry->fwm_family == AF_INET ? " IPv4" : vsg_entry->fwm_family == AF_INET6 ? " IPv6" : "");
conf_write(fp, " Alive: %u IPv4, %u IPv6",
vsg_entry->fwm4_alive, vsg_entry->fwm6_alive);
} else {
if (inet_sockaddrcmp(&vsg_entry->addr, &vsg_entry->addr_end)) {
strcpy(start_addr, inet_sockaddrtos(&vsg_entry->addr));
conf_write(fp, " VIP Range = %s-%s, VPORT = %d",
start_addr,
inet_sockaddrtos(&vsg_entry->addr_end),
ntohs(inet_sockaddrport(&vsg_entry->addr)));
} else
conf_write(fp, " VIP = %s, VPORT = %d"
, inet_sockaddrtos(&vsg_entry->addr)
, ntohs(inet_sockaddrport(&vsg_entry->addr)));
conf_write(fp, " Alive: %u tcp, %u udp, %u sctp",
vsg_entry->tcp_alive, vsg_entry->udp_alive, vsg_entry->sctp_alive);
}
conf_write(fp, " reloaded = %s", vsg_entry->reloaded ? "True" : "False");
}
static void
dump_vsg_entry_list(FILE *fp, const list_head_t *l)
{
virtual_server_group_entry_t *vsge;
list_for_each_entry(vsge, l, e_list)
dump_vsg_entry(fp, vsge);
}
void
free_vsg(virtual_server_group_t *vsg)
{
list_del_init(&vsg->e_list);
FREE_PTR(vsg->gname);
free_vsg_entry_list(&vsg->addr_range);
free_vsg_entry_list(&vsg->vfwmark);
FREE(vsg);
}
static void
free_vsg_list(list_head_t *l)
{
virtual_server_group_t *vsg, *vsg_tmp;
list_for_each_entry_safe(vsg, vsg_tmp, l, e_list)
free_vsg(vsg);
}
static void
dump_vsg(FILE *fp, const virtual_server_group_t *vsg)
{
conf_write(fp, " ------< Virtual server group >------");
conf_write(fp, " Virtual Server Group = %s, IPv4 = %s, IPv6 = %s", vsg->gname, vsg->have_ipv4 ? "yes" : "no", vsg->have_ipv6 ? "yes" : "no");
#ifdef _WITH_NFTABLES_
if (global_data->ipvs_nf_table_name &&
(vsg->auto_fwmark[TCP_INDEX] ||
vsg->auto_fwmark[UDP_INDEX] ||
vsg->auto_fwmark[SCTP_INDEX]))
conf_write(fp, " Fwmark TCP: %u UDP: %u SCTP: %u", vsg->auto_fwmark[TCP_INDEX], vsg->auto_fwmark[UDP_INDEX], vsg->auto_fwmark[SCTP_INDEX]);
#endif
dump_vsg_entry_list(fp, &vsg->addr_range);
dump_vsg_entry_list(fp, &vsg->vfwmark);
}
static void
dump_vsg_list(FILE *fp, const list_head_t *l)
{
virtual_server_group_t *vsg;
list_for_each_entry(vsg, l, e_list)
dump_vsg(fp, vsg);
}
virtual_server_group_t *
alloc_vsg(const char *gname)
{
virtual_server_group_t *new;
PMALLOC(new);
INIT_LIST_HEAD(&new->e_list);
INIT_LIST_HEAD(&new->addr_range);
INIT_LIST_HEAD(&new->vfwmark);
new->gname = STRDUP(gname);
return new;
}
void
alloc_vsg_entry(const vector_t *strvec)
{
virtual_server_group_entry_t *new;
uint32_t start;
const char *port_str;
uint32_t range;
unsigned fwmark;
const char *family_str;
const char *addr_str = strvec_slot(strvec, 0);
char *endptr;
const char *mask_str;
unsigned mask;
uint32_t mask_bit, mask_bits;
bool bad;
unsigned i;
const char *end_str;
int diff;
PMALLOC(new);
INIT_LIST_HEAD(&new->e_list);
if (!strcmp(addr_str, "fwmark")) {
if (!read_unsigned_strvec(strvec, 1, &fwmark, 0, UINT32_MAX, true)) {
report_config_error(CONFIG_GENERAL_ERROR, "(%s): fwmark '%s' must be in [0, %u] - ignoring", current_vsg->gname, strvec_slot(strvec, 1), UINT32_MAX);
FREE(new);
return;
}
if (vector_size(strvec) > 2) {
family_str = strvec_slot(strvec, 2);
if (!strcmp(family_str, "inet")) {
new->fwm_family = AF_INET;
current_vsg->have_ipv4 = true;
} else if (!strcmp(family_str, "inet6")) {
new->fwm_family = AF_INET6;
current_vsg->have_ipv6 = true;
} else {
report_config_error(CONFIG_GENERAL_ERROR, "(%s): fwmark '%u' family %s unknown - ignoring", current_vsg->gname, fwmark, family_str);
FREE(new);
return;
}
} else {
new->fwm_family = AF_UNSPEC;
current_vsg->fwmark_no_family = true;
}
new->vfwmark = fwmark;
new->is_fwmark = true;
list_add_tail(&new->e_list, ¤t_vsg->vfwmark);
} else {
if (vector_size(strvec) >= 2) {
/* Don't pass a port number of 0. This was added v2.0.7 to support legacy
* configuration since previously having no port wasn't allowed. */
port_str = strvec_slot(strvec, 1);
if (!port_str[strspn(port_str, "0")])
port_str = NULL;
}
else
port_str = NULL;
if (inet_stosockaddr(addr_str, port_str, &new->addr)) {
report_config_error(CONFIG_GENERAL_ERROR, "Invalid virtual server group IP address %s %s%s%s - skipping", strvec_slot(strvec, 0),
port_str ? "/port" : "", port_str ? "/" : "", port_str ? port_str : "");
FREE(new);
return;
}
#ifndef LIBIPVS_USE_NL
if (new->addr.ss_family != AF_INET) {
report_config_error(CONFIG_GENERAL_ERROR, "IPVS does not support IPv6 in this build - skipping %s", addr_str);
FREE(new);
return;
}
#endif
if ((mask_str = strchr(addr_str, '/'))) {
mask = strtoul(mask_str + 1, &endptr, 10);
if (*endptr ||
!mask ||
(new->addr.ss_family == AF_INET && mask > 32) ||
(new->addr.ss_family == AF_INET6 && mask > 128)) {
report_config_error(CONFIG_GENERAL_ERROR, "Invalid netmask - %s - skipping", addr_str);
FREE(new);
return;
}
new->addr_end = new->addr;
bad = false;
if (new->addr.ss_family == AF_INET && mask < 32) {
for (i = mask, mask_bit = 1, mask_bits = 0; i < 32; i++, mask_bit <<= 1)
mask_bits |= mask_bit;
if (PTR_CAST(struct sockaddr_in, &new->addr)->sin_addr.s_addr & htonl(mask_bits))
bad = true;
else
PTR_CAST(struct sockaddr_in, &new->addr_end)->sin_addr.s_addr |= htonl(mask_bits);
} else if (mask < 128) {
for (i = mask % 16, mask_bit = 1, mask_bits = 0; i < 16; i++, mask_bit <<= 1)
mask_bits |= mask_bit;
i = mask / 16;
if (PTR_CAST(struct sockaddr_in6, &new->addr)->sin6_addr.s6_addr16[i] & htons(mask_bits))
bad = true;
else {
PTR_CAST(struct sockaddr_in6, &new->addr_end)->sin6_addr.s6_addr16[i] |= htons(mask_bits);
for (i++; i < 8; i++) {
if (PTR_CAST(struct sockaddr_in6, &new->addr)->sin6_addr.s6_addr16[i])
bad = true;
else
PTR_CAST(struct sockaddr_in6, &new->addr_end)->sin6_addr.s6_addr16[i] = 0xffff;
}
}
}
if (bad) {
report_config_error(CONFIG_GENERAL_ERROR, "Address mask bits not empty - %s - skipping", addr_str);
FREE(new);
return;
}
} else {
if ((end_str = strchr(addr_str, '-')) &&
((new->addr.ss_family == AF_INET && strchr(end_str + 1, '.')) ||
(new->addr.ss_family == AF_INET6 && strchr(end_str + 1, ':')))) {
if (inet_stosockaddr(++end_str, port_str, &new->addr_end)) {
report_config_error(CONFIG_GENERAL_ERROR, "Invalid range end %s - skipping", addr_str);
FREE(new);
return;
}
if (new->addr.ss_family != new->addr_end.ss_family) {
report_config_error(CONFIG_GENERAL_ERROR, "Range address families do not match %s - skipping", addr_str);
FREE(new);
return;
}
bad = false;
if (new->addr.ss_family == AF_INET) {
if (htonl(PTR_CAST(struct sockaddr_in, &new->addr)->sin_addr.s_addr) >
htonl(PTR_CAST(struct sockaddr_in, &new->addr_end)->sin_addr.s_addr))
bad = true;
} else {
for (i = 0; i < 8; i++) {
diff = htons(PTR_CAST(struct sockaddr_in6, &new->addr_end)->sin6_addr.s6_addr16[i]) -
htons(PTR_CAST(struct sockaddr_in6, &new->addr)->sin6_addr.s6_addr16[i]);
if (diff < 0) {
bad = true;
break;
}
if (diff > 0)
break;
}
}
if (bad) {
report_config_error(CONFIG_GENERAL_ERROR, "Address range end is less than address range start - %s - skipping", addr_str);
FREE(new);
return;
}
} else {
if (!inet_stor(addr_str, &range)) {
FREE(new);
return;
}
/* If no range specified, range == UINT32_MAX */
new->addr_end = new->addr;
if (range != UINT32_MAX) {
if (new->addr.ss_family == AF_INET) {
PTR_CAST(struct sockaddr_in, &new->addr_end)->sin_addr.s_addr &= htonl(~0xFF);
PTR_CAST(struct sockaddr_in, &new->addr_end)->sin_addr.s_addr |= htonl(range);
start = ntohl(PTR_CAST(struct sockaddr_in, &new->addr)->sin_addr.s_addr) & 0xFF;
} else {
PTR_CAST(struct sockaddr_in6, &new->addr_end)->sin6_addr.s6_addr16[7] = htons(range);
start = ntohs(PTR_CAST(struct sockaddr_in6, &new->addr)->sin6_addr.s6_addr16[7]);
}
if (start >= range) {
report_config_error(CONFIG_GENERAL_ERROR, "Address range end is not greater than address range start - %s - skipping", addr_str);
FREE(new);
return;
}
}
}
}
new->is_fwmark = false;
list_add_tail(&new->e_list, ¤t_vsg->addr_range);
if (new->addr.ss_family == AF_INET)
current_vsg->have_ipv4 = true;
else
current_vsg->have_ipv6 = true;
}
}
static void
dump_forwarding_method(FILE *fp, const char *prefix, const real_server_t *rs)
{
const char *fwd_method = "forwarding method = ";
#ifdef _HAVE_IPVS_TUN_TYPE_
const char *csum_str = "";
const char *tun_type = "TUN, type = ";
#endif
switch (rs->forwarding_method) {
case IP_VS_CONN_F_MASQ:
conf_write(fp, " %s%sNAT", prefix, fwd_method);
break;
case IP_VS_CONN_F_DROUTE:
conf_write(fp, " %s%sDR", prefix, fwd_method);
break;
case IP_VS_CONN_F_TUNNEL:
#ifdef _HAVE_IPVS_TUN_TYPE_
if (rs->tun_type == IP_VS_CONN_F_TUNNEL_TYPE_IPIP)
conf_write(fp, " %s%s%sIPIP", prefix, fwd_method, tun_type);
else {
#ifdef _HAVE_IPVS_TUN_CSUM_
csum_str = rs->tun_flags == IP_VS_TUNNEL_ENCAP_FLAG_NOCSUM ? ", no checksum" :
rs->tun_flags == IP_VS_TUNNEL_ENCAP_FLAG_CSUM ? ", checksum" :
rs->tun_flags == IP_VS_TUNNEL_ENCAP_FLAG_REMCSUM ? ", remote checksum" :
", unknown checksum type";
#endif
if (rs->tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE)
conf_write(fp, " %s%sGUE, port = %u%s", fwd_method, tun_type, ntohs(rs->tun_port), csum_str);
#ifdef _HAVE_IPVS_TUN_GRE_
else if (rs->tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GRE)
conf_write(fp, " %s%sGRE%s", fwd_method, tun_type, csum_str);
#endif
}
#else
conf_write(fp, " %s%sTUN", prefix, fwd_method);
#endif
break;
default:
conf_write(fp, " %s 0x%x", fwd_method, rs->forwarding_method);
break;
}
}
/*
* Real server facility functions
*/
void
free_rs(real_server_t *rs)
{
list_del_init(&rs->e_list);
free_notify_script(&rs->notify_up);
free_notify_script(&rs->notify_down);
free_track_file_monitor_list(&rs->track_files);
#ifdef _WITH_BFD_
free_checker_tracked_bfd_list(&rs->tracked_bfds);
#endif
FREE_CONST_PTR(rs->virtualhost);
#ifdef _WITH_SNMP_CHECKER_
FREE_CONST_PTR(rs->snmp_name);
#endif
free_rs_checkers(rs);
FREE(rs);
}
static void
free_rs_list(list_head_t *l)
{
real_server_t *rs, *rs_tmp;
list_for_each_entry_safe(rs, rs_tmp, l, e_list)
free_rs(rs);
}
void
dump_tracking_rs(FILE *fp, const void *data)
{
const tracking_obj_t *top = PTR_CAST_CONST(tracking_obj_t, data);
const checker_t *checker = top->obj.checker;
conf_write(fp, " %s -> %s, weight %d%s", FMT_VS(checker->vs), FMT_RS(checker->rs, checker->vs), top->weight, top->weight_multiplier == -1 ? " reverse" : "");
}
static void
dump_notify_vs_rs_script(FILE *fp, const notify_script_t *script, const char *type, const char *state)
{
if (script->path)
conf_write(fp, " %s %s notify script = %s, params = %s, uid:gid %u:%u", type, state,
script->path, cmd_str(script), script->uid, script->gid);
else
conf_write(fp, " %s %s notify script = %s, uid:gid %u:%u", type, state,
cmd_str(script), script->uid, script->gid);
}
static void
dump_rs(FILE *fp, const real_server_t *rs)
{
#ifdef _WITH_BFD_
cref_tracked_bfd_t *tbfd;
#endif
conf_write(fp, " ------< Real server >------");
conf_write(fp, " RIP = %s, RPORT = %d, WEIGHT = %d EFF WEIGHT = %" PRIi64
, inet_sockaddrtos(&rs->addr)
, ntohs(inet_sockaddrport(&rs->addr))
, real_weight(rs->effective_weight), rs->effective_weight);
dump_forwarding_method(fp, "", rs);
conf_write(fp, " Alpha is %s", rs->alpha ? "ON" : "OFF");
conf_write(fp, " connection timeout = %s", format_decimal(rs->connection_to, TIMER_HZ_DIGITS));
conf_write(fp, " connection limit range = %" PRIu32 " -> %" PRIu32, rs->l_threshold, rs->u_threshold);
conf_write(fp, " Delay loop = %s" , format_decimal(rs->delay_loop, TIMER_HZ_DIGITS));
if (rs->retry != UINT_MAX)
conf_write(fp, " Retry count = %u" , rs->retry);
if (rs->delay_before_retry != ULONG_MAX)
conf_write(fp, " Retry delay = %s" , format_decimal(rs->delay_before_retry, TIMER_HZ_DIGITS));
if (rs->warmup != ULONG_MAX)
conf_write(fp, " Warmup = %s", format_decimal(rs->warmup, TIMER_HZ_DIGITS));
conf_write(fp, " Inhibit on failure is %s", rs->inhibit ? "ON" : "OFF");
if (rs->notify_up)
dump_notify_vs_rs_script(fp, rs->notify_up, "RS", "up");
if (rs->notify_down)
dump_notify_vs_rs_script(fp, rs->notify_down, "RS", "down");
if (rs->virtualhost)
conf_write(fp, " VirtualHost = '%s'", rs->virtualhost);
#ifdef _WITH_SNMP_CHECKER_
if (rs->snmp_name)
conf_write(fp, " SNMP name = %s", rs->snmp_name);
#endif
conf_write(fp, " Using smtp notification = %s", rs->smtp_alert ? "yes" : "no");
conf_write(fp, " initial weight = %d", rs->iweight);
conf_write(fp, " effective weight = %" PRIi64, rs->effective_weight);
conf_write(fp, " previous effective_weight = %" PRIi64, rs->peffective_weight);
conf_write(fp, " alive = %d", rs->alive);
conf_write(fp, " num failed checkers = %u", rs->num_failed_checkers);
conf_write(fp, " RS set = %d", rs->set);
conf_write(fp, " reloaded = %d", rs->reloaded);
if (!list_empty(&rs->track_files)) {
conf_write(fp, " Tracked Files");
dump_track_file_monitor_list(fp, &rs->track_files);
}
#ifdef _WITH_BFD_
if (!list_empty(&rs->tracked_bfds)) {
conf_write(fp, " Tracked BFDs");
list_for_each_entry(tbfd, &rs->tracked_bfds, e_list)
conf_write(fp, " %s", tbfd->bfd->bname);
}
#endif
}
static void
dump_rs_list(FILE *fp, const list_head_t *l)
{
real_server_t *rs;
list_for_each_entry(rs, l, e_list)
dump_rs(fp, rs);
}
real_server_t *
alloc_rs(const char *ip, const char *port)
{
real_server_t *new;
const char *port_str;
/* inet_stosockaddr rejects port 0 */
port_str = (port && port[strspn(port, "0")]) ? port : NULL;
PMALLOC(new);
INIT_LIST_HEAD(&new->e_list);
INIT_LIST_HEAD(&new->track_files);
#ifdef _WITH_BFD_
INIT_LIST_HEAD(&new->tracked_bfds);
#endif
INIT_LIST_HEAD(&new->checkers_list);
if (inet_stosockaddr(ip, port_str, &new->addr)) {
report_config_error(CONFIG_GENERAL_ERROR, "Invalid real server ip address/port %s/%s - skipping", ip, port);
skip_block(true);
FREE(new);
return NULL;
}
#ifndef LIBIPVS_USE_NL
if (new->addr.ss_family != AF_INET) {
report_config_error(CONFIG_GENERAL_ERROR, "IPVS does not support IPv6 in this build - skipping %s/%s", ip, port);
skip_block(true);
FREE(new);
return NULL;
}
#else
#if !HAVE_DECL_IPVS_DEST_ATTR_ADDR_FAMILY
if (current_vs->af != AF_UNSPEC && new->addr.ss_family != current_vs->af) {
report_config_error(CONFIG_GENERAL_ERROR, "Your kernel doesn't support mixed IPv4/IPv6 for virtual/real servers");
skip_block(true);
FREE(new);
return NULL;
}
#endif
#endif
new->effective_weight = INT64_MAX;
new->forwarding_method = current_vs->forwarding_method;
#ifdef _HAVE_IPVS_TUN_TYPE_
new->tun_type = current_vs->tun_type;
new->tun_port = current_vs->tun_port;
#ifdef _HAVE_IPVS_TUN_CSUM_
new->tun_flags = current_vs->tun_flags;
#endif
#endif
new->alpha = -1;
new->inhibit = -1;
new->connection_to = UINT_MAX;
new->delay_loop = ULONG_MAX;
new->warmup = ULONG_MAX;
new->retry = UINT_MAX;
new->delay_before_retry = ULONG_MAX;
new->virtualhost = NULL;
#ifdef _WITH_SNMP_CHECKER_
new->snmp_name = NULL;
#endif
new->smtp_alert = -1;
return new;
}
/*
* Virtual server facility functions
*/
void
free_vs(virtual_server_t *vs)
{
list_del_init(&vs->e_list);
FREE_CONST_PTR(vs->vsgname);
FREE_CONST_PTR(vs->virtualhost);
#ifdef _WITH_SNMP_CHECKER_
FREE_CONST_PTR(vs->snmp_name);
#endif
FREE_PTR(vs->s_svr);
free_rs_list(&vs->rs);
free_notify_script(&vs->notify_quorum_up);
free_notify_script(&vs->notify_quorum_down);
FREE(vs);
}
static void
free_vs_list(list_head_t *l)
{
virtual_server_t *vs, *vs_tmp;
list_for_each_entry_safe(vs, vs_tmp, l, e_list)
free_vs(vs);
}
static void
dump_vs(FILE *fp, const virtual_server_t *vs)
{
conf_write(fp, " ------< Virtual server >------");
if (vs->vsgname)
conf_write(fp, " VS GROUP = %s", FMT_VS(vs));
else if (vs->vfwmark)
conf_write(fp, " VS FWMARK = %u", vs->vfwmark);
else
conf_write(fp, " VS VIP = %s, VPORT = %d"
, inet_sockaddrtos(&vs->addr), ntohs(inet_sockaddrport(&vs->addr)));
if (vs->virtualhost)
conf_write(fp, " VirtualHost = %s", vs->virtualhost);
#ifdef _WITH_SNMP_CHECKER_
if (vs->snmp_name)
conf_write(fp, " SNMP name = '%s'", vs->snmp_name);
#endif
if (vs->af != AF_UNSPEC)
conf_write(fp, " Address family = inet%s", vs->af == AF_INET ? "" : "6");
else if (vs->vsg && vs->vsg->have_ipv4 && vs->vsg->have_ipv6)
conf_write(fp, " Address family = IPv4 & IPv6");
else
conf_write(fp, " Address family = unknown");
conf_write(fp, " connection timeout = %s", format_decimal(vs->connection_to, TIMER_HZ_DIGITS));
conf_write(fp, " delay_loop = %s", format_decimal(vs->delay_loop, TIMER_HZ_DIGITS));
conf_write(fp, " lvs_sched = %s", vs->sched);
conf_write(fp, " Hashed = %sabled", vs->flags & IP_VS_SVC_F_HASHED ? "en" : "dis");
#ifdef IP_VS_SVC_F_SCHED1
if (!strcmp(vs->sched, "sh"))
{
conf_write(fp, " sh-port = %sabled", vs->flags & IP_VS_SVC_F_SCHED_SH_PORT ? "en" : "dis");
conf_write(fp, " sh-fallback = %sabled", vs->flags & IP_VS_SVC_F_SCHED_SH_FALLBACK ? "en" : "dis");
}
else if (!strcmp(vs->sched, "mh"))
{
conf_write(fp, " mh-port = %sabled", vs->flags & IP_VS_SVC_F_SCHED_MH_PORT ? "en" : "dis");
conf_write(fp, " mh-fallback = %sabled", vs->flags & IP_VS_SVC_F_SCHED_MH_FALLBACK ? "en" : "dis");
}
else
{
conf_write(fp, " flag-1 = %sabled", vs->flags & IP_VS_SVC_F_SCHED1 ? "en" : "dis");
conf_write(fp, " flag-2 = %sabled", vs->flags & IP_VS_SVC_F_SCHED2 ? "en" : "dis");
conf_write(fp, " flag-3 = %sabled", vs->flags & IP_VS_SVC_F_SCHED3 ? "en" : "dis");
}
#endif
conf_write(fp, " One packet scheduling = %sabled%s",
(vs->flags & IP_VS_SVC_F_ONEPACKET) ? "en" : "dis",
((vs->flags & IP_VS_SVC_F_ONEPACKET) && vs->service_type != IPPROTO_UDP) ? " (inactive due to not UDP)" : "");
if (vs->persistence_timeout)
conf_write(fp, " persistence timeout = %u", vs->persistence_timeout);
if (vs->persistence_granularity != 0xffffffff) {
if (vs->af == AF_INET6)
conf_write(fp, " persistence granularity = %" PRIu32,
vs->persistence_granularity);
else
conf_write(fp, " persistence granularity = %s",
inet_ntop2(vs->persistence_granularity));
}
if (vs->service_type == IPPROTO_TCP)
conf_write(fp, " protocol = TCP");
else if (vs->service_type == IPPROTO_UDP)
conf_write(fp, " protocol = UDP");
else if (vs->service_type == IPPROTO_SCTP)
conf_write(fp, " protocol = SCTP");
else if (vs->service_type == IPPROTO_IP)
conf_write(fp, " protocol = none");
else
conf_write(fp, " protocol = %d", vs->service_type);
conf_write(fp, " alpha is %s", vs->alpha ? "ON" : "OFF");
conf_write(fp, " omega is %s", vs->omega ? "ON" : "OFF");
if (vs->retry != UINT_MAX)
conf_write(fp, " Retry count = %u" , vs->retry);
if (vs->delay_before_retry != ULONG_MAX)
conf_write(fp, " Retry delay = %s" , format_decimal(vs->delay_before_retry, TIMER_HZ_DIGITS));
if (vs->warmup != ULONG_MAX)
conf_write(fp, " Warmup = %s", format_decimal(vs->warmup, TIMER_HZ_DIGITS));
conf_write(fp, " Inhibit on failure is %s", vs->inhibit ? "ON" : "OFF");
conf_write(fp, " quorum = %u, hysteresis = %u", vs->quorum, vs->hysteresis);
if (vs->notify_quorum_up)
dump_notify_vs_rs_script(fp, vs->notify_quorum_up, "Quorum", "up");
if (vs->notify_quorum_down)
dump_notify_vs_rs_script(fp, vs->notify_quorum_down, "Quorum", "down");
if (vs->ha_suspend)
conf_write(fp, " Using HA suspend");
conf_write(fp, " Using smtp notification = %s", vs->smtp_alert ? "yes" : "no");
real_server_t rs = { .forwarding_method = vs->forwarding_method };
#ifdef _HAVE_IPVS_TUN_TYPE_
rs.tun_type = vs->tun_type;
rs.tun_port = vs->tun_port;
#ifdef _HAVE_IPVS_TUN_CSUM_
rs.tun_flags = vs->tun_flags;
#endif
#endif
dump_forwarding_method(fp, "default ", &rs);
if (vs->s_svr) {
conf_write(fp, " sorry server %s= %s"
, vs->s_svr_duplicates_rs ? "(duplicates rs) " : ""
, FMT_RS(vs->s_svr, vs));
dump_forwarding_method(fp, " ", vs->s_svr);
conf_write(fp, " Inhibit on failure is %s", vs->s_svr->inhibit ? "ON" : "OFF");
conf_write(fp, " set = %d", vs->s_svr->set);
conf_write(fp, " alive = %d", vs->s_svr->alive);
}
conf_write(fp, " VS alive = %d", vs->alive);
conf_write(fp, " quorum_state_up = %d", vs->quorum_state_up);
conf_write(fp, " reloaded = %d", vs->reloaded);
dump_rs_list(fp, &vs->rs);
}
static void
dump_vs_list(FILE *fp, const list_head_t *l)
{
virtual_server_t *vs;
list_for_each_entry(vs, l, e_list)
dump_vs(fp, vs);
}
virtual_server_t *
alloc_vs(const char *param1, const char *param2)
{
virtual_server_t *new;
const char *port_str;
unsigned fwmark;
PMALLOC(new);
INIT_LIST_HEAD(&new->e_list);
new->af = AF_UNSPEC;
if (!strcmp(param1, "group"))
new->vsgname = STRDUP(param2);
else if (!strcmp(param1, "fwmark")) {
if (!read_unsigned(param2, &fwmark, 0, IPVS_FWMARK_MAX, true)) {
report_config_error(CONFIG_GENERAL_ERROR, "virtual server fwmark '%s' must be in [0, %u] - ignoring", param2, IPVS_FWMARK_MAX);
skip_block(true);
FREE(new);
return NULL;
}
new->vfwmark = fwmark;
} else {
/* Don't pass a zero for port number to inet_stosockaddr. This was added in v2.0.7
* to support legacy configuration since previously having no port wasn't allowed. */
port_str = (param2 && param2[strspn(param2, "0")]) ? param2 : NULL;
if (inet_stosockaddr(param1, port_str, &new->addr)) {
report_config_error(CONFIG_GENERAL_ERROR, "Invalid virtual server IP address%s %s%s%s - skipping",
port_str ? "/port" : "", param1, port_str ? "/" : "", port_str ? port_str : "");
skip_block(true);
FREE(new);
return NULL;
}
new->af = new->addr.ss_family;
#ifndef LIBIPVS_USE_NL
if (new->af != AF_INET) {
report_config_error(CONFIG_GENERAL_ERROR, "IPVS with IPv6 is not supported by this build");
FREE(new);
skip_block(true);
return NULL;
}
#endif
}
new->virtualhost = NULL;
#ifdef _WITH_SNMP_CHECKER_
new->snmp_name = NULL;
#endif
new->alpha = false;
new->omega = false;
new->notify_quorum_up = NULL;
new->notify_quorum_down = NULL;
new->quorum = 1;
new->hysteresis = 0;
new->quorum_state_up = true;
new->flags = 0;
new->forwarding_method = IP_VS_CONN_F_FWD_MASK; /* So we can detect if it has been set */
new->connection_to = 5 * TIMER_HZ;
new->delay_loop = KEEPALIVED_DEFAULT_DELAY;
new->warmup = ULONG_MAX;
new->retry = UINT_MAX;
new->delay_before_retry = ULONG_MAX;
new->weight = 1;
new->smtp_alert = -1;
new->persistence_granularity = 0xffffffff;
INIT_LIST_HEAD(&new->rs);
return new;
}
/* Sorry server facility functions */
void
alloc_ssvr(const char *ip, const char *port)
{
real_server_t *new;
const char *port_str;
/* inet_stosockaddr rejects port 0 */
port_str = (port && port[strspn(port, "0")]) ? port : NULL;
PMALLOC(new);
new->effective_weight = 1;
new->iweight = 1;
new->forwarding_method = current_vs->forwarding_method;
#ifdef _HAVE_IPVS_TUN_TYPE_
new->tun_type = current_vs->tun_type;
new->tun_port = current_vs->tun_port;
#ifdef _HAVE_IPVS_TUN_CSUM_
new->tun_flags = current_vs->tun_flags;
#endif
#endif
if (inet_stosockaddr(ip, port_str, &new->addr)) {
report_config_error(CONFIG_GENERAL_ERROR, "Invalid sorry server IP address %s - skipping", ip);
FREE(new);
return;
}
current_vs->s_svr = new;
}
#ifdef _WITH_BFD_
/* Track bfd dump */
static void
dump_checker_bfd(FILE *fp, const checker_tracked_bfd_t *cbfd)
{
conf_write(fp, " Checker Track BFD = %s", cbfd->bname);
// conf_write(fp, " Weight = %d", cbfd->weight);
conf_write(fp, " Tracking RS :");
dump_bfds_rs_list(fp, &cbfd->tracking_rs);
}
static void
dump_checker_bfd_list(FILE *fp, const list_head_t *l)
{
checker_tracked_bfd_t *cbfd;
list_for_each_entry(cbfd, l, e_list)
dump_checker_bfd(fp, cbfd);
}
void
free_checker_bfd(checker_tracked_bfd_t *cbfd)
{
list_del_init(&cbfd->e_list);
FREE(cbfd->bname);
free_bfds_rs_list(&cbfd->tracking_rs);
FREE(cbfd);
}
static void
free_checker_bfd_list(list_head_t *l)
{
checker_tracked_bfd_t *cbfd, *cbfd_tmp;
list_for_each_entry_safe(cbfd, cbfd_tmp, l, e_list)
free_checker_bfd(cbfd);
}
#endif
/* data facility functions */
check_data_t *
alloc_check_data(void)
{
check_data_t *new;
PMALLOC(new);
INIT_LIST_HEAD(&new->vs);
INIT_LIST_HEAD(&new->vs_group);
INIT_LIST_HEAD(&new->track_files);
#ifdef _WITH_BFD_
INIT_LIST_HEAD(&new->track_bfds);
#endif
return new;
}
void
free_check_data(check_data_t *data)
{
free_vs_list(&data->vs);
free_vsg_list(&data->vs_group);
free_track_file_list(&data->track_files);
#ifdef _WITH_BFD_
free_checker_bfd_list(&data->track_bfds);
#endif
FREE(data);
}
static void
dump_check_data(FILE *fp, const check_data_t *data)
{
if (data->ssl) {
conf_write(fp, "------< SSL definitions >------");
dump_ssl(fp);
}
if (!list_empty(&data->vs)) {
conf_write(fp, "------< LVS Topology >------");
conf_write(fp, " System is compiled with LVS v%d.%d.%d"
, NVERSION(IP_VS_VERSION_CODE));
if (!list_empty(&data->vs_group))
dump_vsg_list(fp, &data->vs_group);
dump_vs_list(fp, &data->vs);
}
dump_checkers(fp);
if (!list_empty(&data->track_files)) {
conf_write(fp, "------< Checker track files >------");
dump_track_file_list(fp, &data->track_files);
}
#ifdef _WITH_BFD_
if (!list_empty(&data->track_bfds)) {
conf_write(fp, "------< Checker track BFDs >------");
dump_checker_bfd_list(fp, &data->track_bfds);
}
#endif
}
void
dump_data_check(FILE *fp)
{
dump_global_data(fp, global_data);
dump_check_data(fp, check_data);
}
const char *
format_vs(const virtual_server_t *vs)
{
/* alloc large buffer because of unknown length of vs->vsgname */
static char ret[512];
if (vs->vsgname)
snprintf (ret, sizeof (ret) - 1, "[%s]:%d"
, vs->vsgname
, ntohs(inet_sockaddrport(&vs->addr)));
else if (vs->vfwmark)
snprintf (ret, sizeof (ret) - 1, "FWM %u", vs->vfwmark);
else
snprintf(ret, sizeof(ret) - 1, "%s"
, inet_sockaddrtotrio(&vs->addr, vs->service_type));
return ret;
}
const char *
format_vsge(const virtual_server_group_entry_t *vsge)
{
static char ret[INET6_ADDRSTRLEN + 1 + INET6_ADDRSTRLEN + 1 + 5 + 1]; /* IPv6 addr-IPv6 addr:ppppp */
unsigned offs;