-
Notifications
You must be signed in to change notification settings - Fork 271
/
doveadm-dsync.c
1387 lines (1244 loc) · 38.7 KB
/
doveadm-dsync.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
/* Copyright (c) 2009-2017 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "lib-signals.h"
#include "array.h"
#include "execv-const.h"
#include "fd-set-nonblock.h"
#include "child-wait.h"
#include "istream.h"
#include "ostream.h"
#include "iostream-ssl.h"
#include "iostream-rawlog.h"
#include "write-full.h"
#include "str.h"
#include "strescape.h"
#include "var-expand.h"
#include "process-title.h"
#include "settings-parser.h"
#include "imap-util.h"
#include "master-service.h"
#include "master-service-settings.h"
#include "master-service-ssl-settings.h"
#include "mail-storage.h"
#include "mail-storage-service.h"
#include "mail-user.h"
#include "mail-namespace.h"
#include "mailbox-list-private.h"
#include "doveadm-settings.h"
#include "doveadm-mail.h"
#include "doveadm-print.h"
#include "doveadm-server.h"
#include "client-connection.h"
#include "server-connection.h"
#include "dsync/dsync-brain.h"
#include "dsync/dsync-ibc.h"
#include "doveadm-dsync.h"
#include <stdio.h>
#include <unistd.h>
#include <ctype.h>
#include <sys/wait.h>
#define DSYNC_COMMON_GETOPT_ARGS "+1a:dDEfg:I:l:m:n:NO:Pr:Rs:t:e:T:Ux:"
#define DSYNC_REMOTE_CMD_EXIT_WAIT_SECS 30
/* The broken_char is mainly set to get a proper error message when trying to
convert a mailbox with a name that can't be used properly translated between
vname/storage_name and would otherwise be mixed up with a normal "mailbox
doesn't exist" error message. This could be any control character, since
none of them are allowed to be created in regular mailbox names. */
#define DSYNC_LIST_BROKEN_CHAR '\003'
#define DSYNC_DEFAULT_IO_STREAM_TIMEOUT_SECS (60*10)
enum dsync_run_type {
DSYNC_RUN_TYPE_LOCAL,
DSYNC_RUN_TYPE_STREAM,
DSYNC_RUN_TYPE_CMD
};
struct dsync_cmd_context {
struct doveadm_mail_cmd_context ctx;
enum dsync_brain_sync_type sync_type;
const char *mailbox;
const char *sync_flags;
const char *virtual_all_box;
guid_128_t mailbox_guid;
const char *state_input, *rawlog_path;
ARRAY_TYPE(const_string) exclude_mailboxes;
ARRAY_TYPE(const_string) namespace_prefixes;
time_t sync_since_timestamp;
time_t sync_until_timestamp;
uoff_t sync_max_size;
unsigned int io_timeout_secs;
const char *remote_name;
const char *local_location;
pid_t remote_pid;
const char *const *remote_cmd_args;
struct child_wait *child_wait;
int exit_status;
int fd_in, fd_out, fd_err;
struct io *io_err;
struct istream *input, *err_stream;
struct ostream *output;
size_t input_orig_bufsize, output_orig_bufsize;
struct ssl_iostream_context *ssl_ctx;
struct ssl_iostream *ssl_iostream;
enum dsync_run_type run_type;
struct server_connection *tcp_conn;
const char *error;
unsigned int lock_timeout;
unsigned int lock:1;
unsigned int purge_remote:1;
unsigned int sync_visible_namespaces:1;
unsigned int default_replica_location:1;
unsigned int oneway:1;
unsigned int backup:1;
unsigned int reverse_backup:1;
unsigned int remote_user_prefix:1;
unsigned int no_mail_sync:1;
unsigned int no_mailbox_renames:1;
unsigned int local_location_from_arg:1;
unsigned int replicator_notify:1;
unsigned int exited:1;
unsigned int empty_hdr_workaround:1;
};
static bool legacy_dsync = FALSE;
static void remote_error_input(struct dsync_cmd_context *ctx)
{
const unsigned char *data;
size_t size;
const char *line;
switch (i_stream_read(ctx->err_stream)) {
case -2:
data = i_stream_get_data(ctx->err_stream, &size);
fprintf(stderr, "%.*s", (int)size, data);
i_stream_skip(ctx->err_stream, size);
break;
case -1:
if (ctx->io_err != NULL)
io_remove(&ctx->io_err);
break;
default:
while ((line = i_stream_next_line(ctx->err_stream)) != NULL)
fprintf(stderr, "%s\n", line);
break;
}
}
static void
run_cmd(struct dsync_cmd_context *ctx, const char *const *args)
{
int fd_in[2], fd_out[2], fd_err[2];
ctx->remote_cmd_args = p_strarray_dup(ctx->ctx.pool, args);
if (pipe(fd_in) < 0 || pipe(fd_out) < 0 || pipe(fd_err) < 0)
i_fatal("pipe() failed: %m");
ctx->remote_pid = fork();
switch (ctx->remote_pid) {
case -1:
i_fatal("fork() failed: %m");
case 0:
/* child, which will execute the proxy server. stdin/stdout
goes to pipes which we'll pass to proxy client. */
if (dup2(fd_in[0], STDIN_FILENO) < 0 ||
dup2(fd_out[1], STDOUT_FILENO) < 0 ||
dup2(fd_err[1], STDERR_FILENO) < 0)
i_fatal("dup2() failed: %m");
i_close_fd(&fd_in[0]);
i_close_fd(&fd_in[1]);
i_close_fd(&fd_out[0]);
i_close_fd(&fd_out[1]);
i_close_fd(&fd_err[0]);
i_close_fd(&fd_err[1]);
execvp_const(args[0], args);
default:
/* parent */
break;
}
i_close_fd(&fd_in[0]);
i_close_fd(&fd_out[1]);
i_close_fd(&fd_err[1]);
ctx->fd_in = fd_out[0];
ctx->fd_out = fd_in[1];
ctx->fd_err = fd_err[0];
if (ctx->remote_user_prefix) {
const char *prefix =
t_strdup_printf("%s\n", ctx->ctx.cur_username);
if (write_full(ctx->fd_out, prefix, strlen(prefix)) < 0)
i_fatal("write(remote out) failed: %m");
}
fd_set_nonblock(ctx->fd_err, TRUE);
ctx->err_stream = i_stream_create_fd(ctx->fd_err, IO_BLOCK_SIZE, FALSE);
i_stream_set_return_partial_line(ctx->err_stream, TRUE);
}
static void
mirror_get_remote_cmd_line(const char *const *argv,
const char *const **cmd_args_r)
{
ARRAY_TYPE(const_string) cmd_args;
unsigned int i;
const char *p;
i_assert(argv[0] != NULL);
t_array_init(&cmd_args, 16);
for (i = 0; argv[i] != NULL; i++) {
p = argv[i];
array_append(&cmd_args, &p, 1);
}
if (legacy_dsync) {
/* we're executing dsync */
p = "server";
} else {
/* we're executing doveadm */
p = "dsync-server";
}
array_append(&cmd_args, &p, 1);
array_append_zero(&cmd_args);
*cmd_args_r = array_idx(&cmd_args, 0);
}
static const char *const *
get_ssh_cmd_args(const char *host, const char *login, const char *mail_user)
{
static struct var_expand_table static_tab[] = {
{ 'u', NULL, "user" },
{ '\0', NULL, "login" },
{ '\0', NULL, "host" },
{ '\0', NULL, NULL }
};
struct var_expand_table *tab;
ARRAY_TYPE(const_string) cmd_args;
string_t *str, *str2;
const char *value, *const *args;
tab = t_malloc(sizeof(static_tab));
memcpy(tab, static_tab, sizeof(static_tab));
tab[0].value = mail_user;
tab[1].value = login;
tab[2].value = host;
t_array_init(&cmd_args, 8);
str = t_str_new(128);
str2 = t_str_new(128);
args = t_strsplit(doveadm_settings->dsync_remote_cmd, " ");
for (; *args != NULL; args++) {
if (strchr(*args, '%') == NULL)
value = *args;
else {
/* some automation: if parameter's all %variables
expand to empty, but the %variable isn't the only
text in the parameter, skip it. */
str_truncate(str, 0);
str_truncate(str2, 0);
var_expand(str, *args, tab);
var_expand(str2, *args, static_tab);
if (strcmp(str_c(str), str_c(str2)) == 0 &&
str_len(str) > 0)
continue;
value = t_strdup(str_c(str));
}
array_append(&cmd_args, &value, 1);
}
array_append_zero(&cmd_args);
return array_idx(&cmd_args, 0);
}
static bool mirror_get_remote_cmd(struct dsync_cmd_context *ctx,
const char *user,
const char *const **cmd_args_r)
{
const char *p, *host, *const *argv = ctx->ctx.args;
if (argv[1] != NULL) {
/* more than one parameter, so it contains a full command
(e.g. ssh host dsync) */
mirror_get_remote_cmd_line(argv, cmd_args_r);
return TRUE;
}
/* if it begins with /[a-z0-9]+:/, it's a mail location
(e.g. mdbox:~/mail) */
for (p = argv[0]; *p != '\0'; p++) {
if (!i_isalnum(*p)) {
if (*p == ':')
return FALSE;
break;
}
}
if (strchr(argv[0], ' ') != NULL || strchr(argv[0], '/') != NULL) {
/* a) the whole command is in one string. this is mainly for
backwards compatibility.
b) script/path */
mirror_get_remote_cmd_line(t_strsplit(argv[0], " "),
cmd_args_r);
return TRUE;
}
/* [user@]host */
host = strchr(argv[0], '@');
if (host != NULL)
user = t_strdup_until(argv[0], host++);
else
host = argv[0];
/* we'll assume virtual users, so in user@host it really means not to
give ssh a username, but to give dsync -u user parameter. */
*cmd_args_r = get_ssh_cmd_args(host, "", user);
return TRUE;
}
static void doveadm_user_init_dsync(struct mail_user *user)
{
struct mail_namespace *ns;
user->dsyncing = TRUE;
for (ns = user->namespaces; ns != NULL; ns = ns->next)
ns->list->set.broken_char = DSYNC_LIST_BROKEN_CHAR;
}
static bool paths_are_equal(struct mail_user *user1, struct mail_user *user2,
enum mailbox_list_path_type type)
{
const char *path1, *path2;
i_assert(user1->namespaces != NULL);
i_assert(user2->namespaces != NULL);
return mailbox_list_get_root_path(user1->namespaces->list, type, &path1) &&
mailbox_list_get_root_path(user2->namespaces->list, type, &path2) &&
strcmp(path1, path2) == 0;
}
static int
cmd_dsync_run_local(struct dsync_cmd_context *ctx, struct mail_user *user,
struct dsync_brain *brain, struct dsync_ibc *ibc2,
const char **changes_during_sync_r,
enum mail_error *mail_error_r)
{
struct dsync_brain *brain2;
struct mail_user *user2;
struct setting_parser_context *set_parser;
const char *location;
bool brain1_running, brain2_running, changed1, changed2;
bool remote_only_changes;
int ret;
*mail_error_r = 0;
if (ctx->local_location_from_arg)
location = ctx->ctx.args[0];
else {
i_assert(ctx->local_location != NULL);
location = ctx->local_location;
}
i_set_failure_prefix("dsync(%s): ", user->username);
/* update mail_location and create another user for the
second location. */
set_parser = mail_storage_service_user_get_settings_parser(ctx->ctx.cur_service_user);
if (settings_parse_keyvalue(set_parser, "mail_location", location) < 0)
i_unreached();
ret = mail_storage_service_next(ctx->ctx.storage_service,
ctx->ctx.cur_service_user, &user2);
if (ret < 0) {
ctx->ctx.exit_code = ret == -1 ? EX_TEMPFAIL : EX_CONFIG;
return -1;
}
doveadm_user_init_dsync(user2);
if (mail_namespaces_get_root_sep(user->namespaces) !=
mail_namespaces_get_root_sep(user2->namespaces)) {
i_error("Mail locations must use the same "
"virtual mailbox hierarchy separator "
"(specify separator for the default namespace)");
ctx->ctx.exit_code = EX_CONFIG;
mail_user_unref(&user2);
return -1;
}
if (paths_are_equal(user, user2, MAILBOX_LIST_PATH_TYPE_MAILBOX) &&
paths_are_equal(user, user2, MAILBOX_LIST_PATH_TYPE_INDEX)) {
i_error("Both source and destination mail_location "
"points to same directory: %s",
mailbox_list_get_root_forced(user->namespaces->list,
MAILBOX_LIST_PATH_TYPE_MAILBOX));
ctx->ctx.exit_code = EX_CONFIG;
mail_user_unref(&user2);
return -1;
}
brain2 = dsync_brain_slave_init(user2, ibc2, TRUE, "");
mail_user_unref(&user2);
brain1_running = brain2_running = TRUE;
changed1 = changed2 = TRUE;
while (brain1_running || brain2_running) {
if (dsync_brain_has_failed(brain) ||
dsync_brain_has_failed(brain2))
break;
if (doveadm_is_killed()) {
i_warning("Killed with signal %d", doveadm_killed_signo());
break;
}
i_assert(changed1 || changed2);
brain1_running = dsync_brain_run(brain, &changed1);
brain2_running = dsync_brain_run(brain2, &changed2);
}
*changes_during_sync_r = t_strdup(dsync_brain_get_unexpected_changes_reason(brain2, &remote_only_changes));
if (dsync_brain_deinit(&brain2, mail_error_r) < 0)
return -1;
return doveadm_is_killed() ? -1 : 0;
}
static void cmd_dsync_remote_exited(const struct child_wait_status *status,
struct dsync_cmd_context *ctx)
{
ctx->exited = TRUE;
ctx->exit_status = status->status;
io_loop_stop(current_ioloop);
}
static void cmd_dsync_wait_remote(struct dsync_cmd_context *ctx)
{
struct timeout *to;
/* wait in ioloop for the remote process to die. while we're running
we're also reading and printing all errors that still coming from
it. */
to = timeout_add(DSYNC_REMOTE_CMD_EXIT_WAIT_SECS*1000,
io_loop_stop, current_ioloop);
io_loop_run(current_ioloop);
timeout_remove(&to);
if (!ctx->exited) {
i_error("Remote command process isn't dying, killing it");
if (kill(ctx->remote_pid, SIGKILL) < 0 && errno != ESRCH) {
i_error("kill(%ld, SIGKILL) failed: %m",
(long)ctx->remote_pid);
}
}
}
static void cmd_dsync_log_remote_status(int status, bool remote_errors_logged,
const char *const *remote_cmd_args)
{
if (status == -1)
;
else if (WIFSIGNALED(status)) {
i_error("Remote command died with signal %d: %s", WTERMSIG(status),
t_strarray_join(remote_cmd_args, " "));
} else if (!WIFEXITED(status)) {
i_error("Remote command failed with status %d: %s", status,
t_strarray_join(remote_cmd_args, " "));
} else if (WEXITSTATUS(status) == EX_TEMPFAIL && remote_errors_logged) {
/* remote most likely already logged the error.
don't bother logging another line about it */
} else if (WEXITSTATUS(status) != 0) {
i_error("Remote command returned error %d: %s", WEXITSTATUS(status),
t_strarray_join(remote_cmd_args, " "));
}
}
static void cmd_dsync_run_remote(struct mail_user *user)
{
i_set_failure_prefix("dsync-local(%s): ", user->username);
io_loop_run(current_ioloop);
}
static const char *const *
parse_ssh_location(const char *location, const char *username)
{
const char *host, *login;
host = strchr(location, '@');
if (host != NULL)
login = t_strdup_until(location, host++);
else {
host = location;
login = "";
}
return get_ssh_cmd_args(host, login, username);
}
static struct dsync_ibc *
cmd_dsync_icb_stream_init(struct dsync_cmd_context *ctx,
const char *name, const char *temp_prefix)
{
if (ctx->input == NULL) {
fd_set_nonblock(ctx->fd_in, TRUE);
fd_set_nonblock(ctx->fd_out, TRUE);
ctx->input = i_stream_create_fd(ctx->fd_in, (size_t)-1, FALSE);
ctx->output = o_stream_create_fd(ctx->fd_out, (size_t)-1, FALSE);
} else {
i_assert(ctx->fd_in == -1 && ctx->fd_out == -1);
ctx->fd_in = i_stream_get_fd(ctx->input);
ctx->fd_out = o_stream_get_fd(ctx->output);
ctx->input_orig_bufsize = i_stream_get_max_buffer_size(ctx->input);
ctx->output_orig_bufsize = o_stream_get_max_buffer_size(ctx->output);
i_stream_set_max_buffer_size(ctx->input, (size_t)-1);
o_stream_set_max_buffer_size(ctx->output, (size_t)-1);
}
if (ctx->rawlog_path != NULL) {
iostream_rawlog_create_path(ctx->rawlog_path,
&ctx->input, &ctx->output);
}
i_stream_ref(ctx->input);
o_stream_ref(ctx->output);
return dsync_ibc_init_stream(ctx->input, ctx->output,
name, temp_prefix, ctx->io_timeout_secs);
}
static void
dsync_replicator_notify(struct dsync_cmd_context *ctx,
enum dsync_brain_sync_type sync_type,
const char *state_str)
{
#define REPLICATOR_HANDSHAKE "VERSION\treplicator-doveadm-client\t1\t0\n"
const char *path;
string_t *str;
int fd;
path = t_strdup_printf("%s/replicator-doveadm",
ctx->ctx.cur_mail_user->set->base_dir);
fd = net_connect_unix(path);
if (fd == -1) {
if (errno == ECONNREFUSED || errno == ENOENT) {
/* replicator not running on this server. ignore. */
return;
}
i_error("net_connect_unix(%s) failed: %m", path);
return;
}
fd_set_nonblock(fd, FALSE);
str = t_str_new(128);
str_append(str, REPLICATOR_HANDSHAKE"NOTIFY\t");
str_append_tabescaped(str, ctx->ctx.cur_mail_user->username);
str_append_c(str, '\t');
if (sync_type == DSYNC_BRAIN_SYNC_TYPE_FULL)
str_append_c(str, 'f');
str_append_c(str, '\t');
str_append_tabescaped(str, state_str);
str_append_c(str, '\n');
if (write_full(fd, str_data(str), str_len(str)) < 0)
i_error("write(%s) failed: %m", path);
/* we only wanted to notify replicator. we don't care enough about the
answer to wait for it. */
if (close(fd) < 0)
i_error("close(%s) failed: %m", path);
}
static int
cmd_dsync_run(struct doveadm_mail_cmd_context *_ctx, struct mail_user *user)
{
struct dsync_cmd_context *ctx = (struct dsync_cmd_context *)_ctx;
struct dsync_ibc *ibc, *ibc2 = NULL;
struct dsync_brain *brain;
struct dsync_brain_settings set;
struct mail_namespace *ns;
const char *const *strp;
enum dsync_brain_flags brain_flags;
enum mail_error mail_error = 0, mail_error2;
bool remote_errors_logged = FALSE;
const char *changes_during_sync, *changes_during_sync2 = NULL;
bool remote_only_changes;
int ret = 0;
i_zero(&set);
if (_ctx->cur_client_ip.family != 0) {
/* include the doveadm client's IP address in the ps output */
set.process_title_prefix = t_strdup_printf(
"%s ", net_ip2addr(&_ctx->cur_client_ip));
}
set.sync_since_timestamp = ctx->sync_since_timestamp;
set.sync_until_timestamp = ctx->sync_until_timestamp;
if (set.sync_since_timestamp > 0 && set.sync_until_timestamp > 0 &&
set.sync_since_timestamp > set.sync_until_timestamp) {
i_fatal("start date is later than end date");
}
set.sync_max_size = ctx->sync_max_size;
set.sync_box = ctx->mailbox;
set.sync_flag = ctx->sync_flags;
set.virtual_all_box = ctx->virtual_all_box;
memcpy(set.sync_box_guid, ctx->mailbox_guid, sizeof(set.sync_box_guid));
set.lock_timeout_secs = ctx->lock_timeout;
set.state = ctx->state_input;
set.mailbox_alt_char = doveadm_settings->dsync_alt_char[0];
if (array_count(&ctx->exclude_mailboxes) > 0) {
/* array is NULL-terminated in init() */
set.exclude_mailboxes = array_idx(&ctx->exclude_mailboxes, 0);
}
doveadm_user_init_dsync(user);
t_array_init(&set.sync_namespaces, array_count(&ctx->namespace_prefixes));
array_foreach(&ctx->namespace_prefixes, strp) {
ns = mail_namespace_find(user->namespaces, *strp);
if (ns == NULL) {
i_error("Namespace not found: '%s'", *strp);
ctx->ctx.exit_code = EX_USAGE;
return -1;
}
array_append(&set.sync_namespaces, &ns, 1);
}
if (ctx->run_type == DSYNC_RUN_TYPE_LOCAL)
dsync_ibc_init_pipe(&ibc, &ibc2);
else {
string_t *temp_prefix = t_str_new(64);
mail_user_set_get_temp_prefix(temp_prefix, user->set);
ibc = cmd_dsync_icb_stream_init(ctx, ctx->remote_name,
str_c(temp_prefix));
if (ctx->fd_err != -1) {
ctx->io_err = io_add(ctx->fd_err, IO_READ,
remote_error_input, ctx);
}
}
brain_flags = DSYNC_BRAIN_FLAG_SEND_MAIL_REQUESTS;
if (ctx->sync_visible_namespaces)
brain_flags |= DSYNC_BRAIN_FLAG_SYNC_VISIBLE_NAMESPACES;
if (ctx->purge_remote)
brain_flags |= DSYNC_BRAIN_FLAG_PURGE_REMOTE;
if (ctx->no_mailbox_renames)
brain_flags |= DSYNC_BRAIN_FLAG_NO_MAILBOX_RENAMES;
if (ctx->backup) {
if (ctx->reverse_backup)
brain_flags |= DSYNC_BRAIN_FLAG_BACKUP_RECV;
else
brain_flags |= DSYNC_BRAIN_FLAG_BACKUP_SEND;
}
if (ctx->no_mail_sync)
brain_flags |= DSYNC_BRAIN_FLAG_NO_MAIL_SYNC;
if (ctx->oneway)
brain_flags |= DSYNC_BRAIN_FLAG_NO_BACKUP_OVERWRITE;
if (ctx->empty_hdr_workaround)
brain_flags |= DSYNC_BRAIN_FLAG_EMPTY_HDR_WORKAROUND;
if (doveadm_debug)
brain_flags |= DSYNC_BRAIN_FLAG_DEBUG;
child_wait_init();
brain = dsync_brain_master_init(user, ibc, ctx->sync_type,
brain_flags, &set);
switch (ctx->run_type) {
case DSYNC_RUN_TYPE_LOCAL:
if (cmd_dsync_run_local(ctx, user, brain, ibc2,
&changes_during_sync2, &mail_error) < 0)
ret = -1;
break;
case DSYNC_RUN_TYPE_CMD:
ctx->child_wait = child_wait_new_with_pid(ctx->remote_pid,
cmd_dsync_remote_exited, ctx);
/* fall through */
case DSYNC_RUN_TYPE_STREAM:
cmd_dsync_run_remote(user);
break;
}
if (ctx->state_input != NULL) {
string_t *state_str = t_str_new(128);
dsync_brain_get_state(brain, state_str);
doveadm_print(str_c(state_str));
}
changes_during_sync = dsync_brain_get_unexpected_changes_reason(brain, &remote_only_changes);
if (changes_during_sync != NULL || changes_during_sync2 != NULL) {
/* don't log a warning when running via doveadm server
(e.g. called by replicator) */
if (ctx->ctx.conn == NULL) {
i_warning("Mailbox changes caused a desync. "
"You may want to run dsync again: %s",
changes_during_sync == NULL ||
(remote_only_changes && changes_during_sync2 != NULL) ?
changes_during_sync2 : changes_during_sync);
}
ctx->ctx.exit_code = 2;
}
if (dsync_brain_deinit(&brain, &mail_error2) < 0)
ret = -1;
if (ret < 0) {
/* tempfail is the default error. prefer to use a non-tempfail
if that exists. */
if (mail_error2 != 0 &&
(mail_error == 0 || mail_error == MAIL_ERROR_TEMP))
mail_error = mail_error2;
doveadm_mail_failed_error(&ctx->ctx, mail_error);
}
dsync_ibc_deinit(&ibc);
if (ibc2 != NULL)
dsync_ibc_deinit(&ibc2);
if (ctx->ssl_iostream != NULL)
ssl_iostream_destroy(&ctx->ssl_iostream);
if (ctx->ssl_ctx != NULL)
ssl_iostream_context_deinit(&ctx->ssl_ctx);
if (ctx->input != NULL) {
i_stream_set_max_buffer_size(ctx->input, ctx->input_orig_bufsize);
i_stream_unref(&ctx->input);
}
if (ctx->output != NULL) {
o_stream_set_max_buffer_size(ctx->output, ctx->output_orig_bufsize);
o_stream_unref(&ctx->output);
}
if (ctx->fd_in != -1) {
if (ctx->fd_out != ctx->fd_in)
i_close_fd(&ctx->fd_out);
i_close_fd(&ctx->fd_in);
}
/* print any final errors after the process has died. not closing
stdin/stdout before wait() may cause the process to hang, but stderr
shouldn't (at least with ssh) and we need stderr to be open to be
able to print the final errors */
if (ctx->run_type == DSYNC_RUN_TYPE_CMD) {
cmd_dsync_wait_remote(ctx);
remote_error_input(ctx);
remote_errors_logged = ctx->err_stream->v_offset > 0;
i_stream_destroy(&ctx->err_stream);
cmd_dsync_log_remote_status(ctx->exit_status, remote_errors_logged,
ctx->remote_cmd_args);
} else {
i_assert(ctx->err_stream == NULL);
}
if (ctx->io_err != NULL)
io_remove(&ctx->io_err);
if (ctx->fd_err != -1)
i_close_fd(&ctx->fd_err);
if (ctx->child_wait != NULL)
child_wait_free(&ctx->child_wait);
child_wait_deinit();
return ret;
}
static void dsync_connected_callback(int exit_code, const char *error,
void *context)
{
struct dsync_cmd_context *ctx = context;
ctx->ctx.exit_code = exit_code;
switch (exit_code) {
case 0:
server_connection_extract(ctx->tcp_conn, &ctx->input,
&ctx->output, &ctx->ssl_iostream);
break;
case SERVER_EXIT_CODE_DISCONNECTED:
ctx->ctx.exit_code = EX_TEMPFAIL;
ctx->error = p_strdup_printf(ctx->ctx.pool,
"Disconnected from remote: %s", error);
break;
case EX_NOUSER:
ctx->error = "Unknown user in remote";
break;
default:
ctx->error = p_strdup_printf(ctx->ctx.pool,
"Failed to start remote dsync-server command: "
"Remote exit_code=%u %s",
exit_code, error == NULL ? "" : error);
break;
}
io_loop_stop(current_ioloop);
}
static int dsync_init_ssl_ctx(struct dsync_cmd_context *ctx,
const struct mail_storage_settings *mail_set,
const char **error_r)
{
struct ssl_iostream_settings ssl_set;
if (ctx->ssl_ctx != NULL)
return 0;
i_zero(&ssl_set);
ssl_set.ca_dir = mail_set->ssl_client_ca_dir;
ssl_set.ca_file = mail_set->ssl_client_ca_file;
ssl_set.verify_remote_cert = TRUE;
ssl_set.crypto_device = mail_set->ssl_crypto_device;
return ssl_iostream_context_init_client(&ssl_set, &ctx->ssl_ctx, error_r);
}
static int
dsync_connect_tcp(struct dsync_cmd_context *ctx,
const struct mail_storage_settings *mail_set,
const char *target, bool ssl, const char **error_r)
{
struct doveadm_server *server;
struct server_connection *conn;
struct ioloop *ioloop;
string_t *cmd;
const char *error;
server = p_new(ctx->ctx.pool, struct doveadm_server, 1);
server->name = p_strdup(ctx->ctx.pool, target);
if (ssl) {
if (dsync_init_ssl_ctx(ctx, mail_set, &error) < 0) {
*error_r = t_strdup_printf(
"Couldn't initialize SSL context: %s", error);
return -1;
}
server->ssl_ctx = ctx->ssl_ctx;
}
p_array_init(&server->connections, ctx->ctx.pool, 1);
p_array_init(&server->queue, ctx->ctx.pool, 1);
ioloop = io_loop_create();
if (doveadm_verbose_proctitle) {
process_title_set(t_strdup_printf(
"[dsync - connecting to %s]", server->name));
}
if (server_connection_create(server, &conn) < 0) {
*error_r = "Couldn't create server connection";
return -1;
}
/* <flags> <username> <command> [<args>] */
cmd = t_str_new(256);
if (doveadm_debug)
str_append_c(cmd, 'D');
str_append_c(cmd, '\t');
str_append_tabescaped(cmd, ctx->ctx.cur_username);
str_append(cmd, "\tdsync-server\t-u");
str_append_tabescaped(cmd, ctx->ctx.cur_username);
if (ctx->replicator_notify)
str_append(cmd, "\t-U");
str_append_c(cmd, '\n');
if (doveadm_verbose_proctitle) {
process_title_set(t_strdup_printf(
"[dsync - running dsync-server on %s]", server->name));
}
ctx->tcp_conn = conn;
server_connection_cmd(conn, str_c(cmd), NULL,
dsync_connected_callback, ctx);
io_loop_run(ioloop);
ctx->tcp_conn = NULL;
if (array_count(&server->connections) > 0)
server_connection_destroy(&conn);
io_loop_destroy(&ioloop);
if (ctx->error != NULL) {
*error_r = ctx->error;
ctx->error = NULL;
return -1;
}
ctx->run_type = DSYNC_RUN_TYPE_STREAM;
return 0;
}
static int
parse_location(struct dsync_cmd_context *ctx,
const struct mail_storage_settings *mail_set,
const char *location,
const char *const **remote_cmd_args_r, const char **error_r)
{
if (strncmp(location, "tcp:", 4) == 0) {
/* TCP connection to remote dsync */
ctx->remote_name = location+4;
return dsync_connect_tcp(ctx, mail_set, ctx->remote_name,
FALSE, error_r);
}
if (strncmp(location, "tcps:", 5) == 0) {
/* TCP+SSL connection to remote dsync */
ctx->remote_name = location+5;
return dsync_connect_tcp(ctx, mail_set, ctx->remote_name,
TRUE, error_r);
}
if (strncmp(location, "remote:", 7) == 0) {
/* this is a remote (ssh) command */
ctx->remote_name = location+7;
} else if (strncmp(location, "remoteprefix:", 13) == 0) {
/* this is a remote (ssh) command with a "user\n"
prefix sent before dsync actually starts */
ctx->remote_name = location+13;
ctx->remote_user_prefix = TRUE;
} else {
/* local with e.g. maildir:path */
ctx->remote_name = NULL;
return 0;
}
*remote_cmd_args_r =
parse_ssh_location(ctx->remote_name, ctx->ctx.cur_username);
return 0;
}
static int cmd_dsync_prerun(struct doveadm_mail_cmd_context *_ctx,
struct mail_storage_service_user *service_user,
const char **error_r)
{
struct dsync_cmd_context *ctx = (struct dsync_cmd_context *)_ctx;
const char *const *remote_cmd_args = NULL;
const struct mail_user_settings *user_set;
const struct mail_storage_settings *mail_set;
const char *username = "";
user_set = mail_storage_service_user_get_set(service_user)[0];
mail_set = mail_storage_service_user_get_mail_set(service_user);
ctx->fd_in = -1;
ctx->fd_out = -1;
ctx->fd_err = -1;
ctx->run_type = DSYNC_RUN_TYPE_LOCAL;
ctx->remote_name = "remote";
if (ctx->default_replica_location) {
ctx->local_location =
mail_user_set_plugin_getenv(user_set, "mail_replica");
if (ctx->local_location == NULL ||
*ctx->local_location == '\0') {
*error_r = "User has no mail_replica in userdb";
_ctx->exit_code = DOVEADM_EX_NOTFOUND;
return -1;
}
} else {
/* if we're executing remotely, give -u parameter if we also
did a userdb lookup. */
if ((_ctx->service_flags & MAIL_STORAGE_SERVICE_FLAG_USERDB_LOOKUP) != 0)
username = _ctx->cur_username;
if (!mirror_get_remote_cmd(ctx, username, &remote_cmd_args)) {
/* it's a mail_location */
if (_ctx->args[1] != NULL)
doveadm_mail_help_name(_ctx->cmd->name);
ctx->local_location = _ctx->args[0];
ctx->local_location_from_arg = TRUE;
}
}
if (remote_cmd_args == NULL && ctx->local_location != NULL) {
if (parse_location(ctx, mail_set, ctx->local_location,
&remote_cmd_args, error_r) < 0)
return -1;
}
if (remote_cmd_args != NULL) {
/* do this before mail_storage_service_next() in case it
drops process privileges */
run_cmd(ctx, remote_cmd_args);
ctx->run_type = DSYNC_RUN_TYPE_CMD;
}
if (ctx->sync_visible_namespaces &&
ctx->run_type == DSYNC_RUN_TYPE_LOCAL)
i_fatal("-N parameter requires syncing with remote host");
return 0;
}
static void cmd_dsync_init(struct doveadm_mail_cmd_context *_ctx,
const char *const args[])
{
struct dsync_cmd_context *ctx = (struct dsync_cmd_context *)_ctx;
if (ctx->default_replica_location) {
if (args[0] != NULL)
i_error("Don't give mail location with -d parameter");
} else {
if (args[0] == NULL)
doveadm_mail_help_name(_ctx->cmd->name);
}
if (array_count(&ctx->exclude_mailboxes) > 0)
array_append_zero(&ctx->exclude_mailboxes);
lib_signals_ignore(SIGHUP, TRUE);
}
static void cmd_dsync_preinit(struct doveadm_mail_cmd_context *ctx)
{
if ((ctx->service_flags & MAIL_STORAGE_SERVICE_FLAG_USERDB_LOOKUP) == 0)
ctx->service_flags |= MAIL_STORAGE_SERVICE_FLAG_NO_CHDIR;
}
static bool
cmd_mailbox_dsync_parse_arg(struct doveadm_mail_cmd_context *_ctx, int c)
{
struct dsync_cmd_context *ctx = (struct dsync_cmd_context *)_ctx;
const char *str, *error;
bool utc;
switch (c) {
case '1':
ctx->oneway = TRUE;
ctx->backup = TRUE;
break;
case 'a':
ctx->virtual_all_box = optarg;
break;
case 'd':
ctx->default_replica_location = TRUE;
break;
case 'D':
ctx->no_mailbox_renames = TRUE;