forked from git/git
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathtransport.c
1401 lines (1224 loc) · 36.6 KB
/
transport.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
#include "cache.h"
#include "config.h"
#include "transport.h"
#include "run-command.h"
#include "pkt-line.h"
#include "fetch-pack.h"
#include "remote.h"
#include "connect.h"
#include "send-pack.h"
#include "walker.h"
#include "bundle.h"
#include "dir.h"
#include "refs.h"
#include "refspec.h"
#include "branch.h"
#include "url.h"
#include "submodule.h"
#include "string-list.h"
#include "sha1-array.h"
#include "sigchain.h"
#include "transport-internal.h"
#include "protocol.h"
#include "object-store.h"
#include "color.h"
static int transport_use_color = -1;
static char transport_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
GIT_COLOR_RED /* REJECTED */
};
enum color_transport {
TRANSPORT_COLOR_RESET = 0,
TRANSPORT_COLOR_REJECTED = 1
};
static int transport_color_config(void)
{
const char *keys[] = {
"color.transport.reset",
"color.transport.rejected"
}, *key = "color.transport";
char *value;
int i;
static int initialized;
if (initialized)
return 0;
initialized = 1;
if (!git_config_get_string(key, &value))
transport_use_color = git_config_colorbool(key, value);
if (!want_color_stderr(transport_use_color))
return 0;
for (i = 0; i < ARRAY_SIZE(keys); i++)
if (!git_config_get_string(keys[i], &value)) {
if (!value)
return config_error_nonbool(keys[i]);
if (color_parse(value, transport_colors[i]) < 0)
return -1;
}
return 0;
}
static const char *transport_get_color(enum color_transport ix)
{
if (want_color_stderr(transport_use_color))
return transport_colors[ix];
return "";
}
static void set_upstreams(struct transport *transport, struct ref *refs,
int pretend)
{
struct ref *ref;
for (ref = refs; ref; ref = ref->next) {
const char *localname;
const char *tmp;
const char *remotename;
int flag = 0;
/*
* Check suitability for tracking. Must be successful /
* already up-to-date ref create/modify (not delete).
*/
if (ref->status != REF_STATUS_OK &&
ref->status != REF_STATUS_UPTODATE)
continue;
if (!ref->peer_ref)
continue;
if (is_null_oid(&ref->new_oid))
continue;
/* Follow symbolic refs (mainly for HEAD). */
localname = ref->peer_ref->name;
remotename = ref->name;
tmp = resolve_ref_unsafe(localname, RESOLVE_REF_READING,
NULL, &flag);
if (tmp && flag & REF_ISSYMREF &&
starts_with(tmp, "refs/heads/"))
localname = tmp;
/* Both source and destination must be local branches. */
if (!localname || !starts_with(localname, "refs/heads/"))
continue;
if (!remotename || !starts_with(remotename, "refs/heads/"))
continue;
if (!pretend)
install_branch_config(BRANCH_CONFIG_VERBOSE,
localname + 11, transport->remote->name,
remotename);
else
printf(_("Would set upstream of '%s' to '%s' of '%s'\n"),
localname + 11, remotename + 11,
transport->remote->name);
}
}
struct bundle_transport_data {
int fd;
struct bundle_header header;
unsigned get_refs_from_bundle_called : 1;
};
static struct ref *get_refs_from_bundle(struct transport *transport,
int for_push,
const struct argv_array *ref_prefixes)
{
struct bundle_transport_data *data = transport->data;
struct ref *result = NULL;
int i;
if (for_push)
return NULL;
data->get_refs_from_bundle_called = 1;
if (data->fd > 0)
close(data->fd);
data->fd = read_bundle_header(transport->url, &data->header);
if (data->fd < 0)
die(_("could not read bundle '%s'"), transport->url);
for (i = 0; i < data->header.references.nr; i++) {
struct ref_list_entry *e = data->header.references.list + i;
struct ref *ref = alloc_ref(e->name);
oidcpy(&ref->old_oid, &e->oid);
ref->next = result;
result = ref;
}
return result;
}
static int fetch_refs_from_bundle(struct transport *transport,
int nr_heads, struct ref **to_fetch)
{
struct bundle_transport_data *data = transport->data;
if (!data->get_refs_from_bundle_called)
get_refs_from_bundle(transport, 0, NULL);
return unbundle(the_repository, &data->header, data->fd,
transport->progress ? BUNDLE_VERBOSE : 0);
}
static int close_bundle(struct transport *transport)
{
struct bundle_transport_data *data = transport->data;
if (data->fd > 0)
close(data->fd);
free(data);
return 0;
}
struct git_transport_data {
struct git_transport_options options;
struct child_process *conn;
int fd[2];
unsigned got_remote_heads : 1;
enum protocol_version version;
struct oid_array extra_have;
struct oid_array shallow;
};
static int set_git_option(struct git_transport_options *opts,
const char *name, const char *value)
{
if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
opts->uploadpack = value;
return 0;
} else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
opts->receivepack = value;
return 0;
} else if (!strcmp(name, TRANS_OPT_THIN)) {
opts->thin = !!value;
return 0;
} else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
opts->followtags = !!value;
return 0;
} else if (!strcmp(name, TRANS_OPT_KEEP)) {
opts->keep = !!value;
return 0;
} else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
opts->update_shallow = !!value;
return 0;
} else if (!strcmp(name, TRANS_OPT_DEPTH)) {
if (!value)
opts->depth = 0;
else {
char *end;
opts->depth = strtol(value, &end, 0);
if (*end)
die(_("transport: invalid depth option '%s'"), value);
}
return 0;
} else if (!strcmp(name, TRANS_OPT_DEEPEN_SINCE)) {
opts->deepen_since = value;
return 0;
} else if (!strcmp(name, TRANS_OPT_DEEPEN_NOT)) {
opts->deepen_not = (const struct string_list *)value;
return 0;
} else if (!strcmp(name, TRANS_OPT_DEEPEN_RELATIVE)) {
opts->deepen_relative = !!value;
return 0;
} else if (!strcmp(name, TRANS_OPT_FROM_PROMISOR)) {
opts->from_promisor = !!value;
return 0;
} else if (!strcmp(name, TRANS_OPT_NO_DEPENDENTS)) {
opts->no_dependents = !!value;
return 0;
} else if (!strcmp(name, TRANS_OPT_LIST_OBJECTS_FILTER)) {
list_objects_filter_die_if_populated(&opts->filter_options);
parse_list_objects_filter(&opts->filter_options, value);
return 0;
}
return 1;
}
static int connect_setup(struct transport *transport, int for_push)
{
struct git_transport_data *data = transport->data;
int flags = transport->verbose > 0 ? CONNECT_VERBOSE : 0;
if (data->conn)
return 0;
switch (transport->family) {
case TRANSPORT_FAMILY_ALL: break;
case TRANSPORT_FAMILY_IPV4: flags |= CONNECT_IPV4; break;
case TRANSPORT_FAMILY_IPV6: flags |= CONNECT_IPV6; break;
}
data->conn = git_connect(data->fd, transport->url,
for_push ? data->options.receivepack :
data->options.uploadpack,
flags);
return 0;
}
static void die_if_server_options(struct transport *transport)
{
if (!transport->server_options || !transport->server_options->nr)
return;
advise(_("see protocol.version in 'git help config' for more details"));
die(_("server options require protocol version 2 or later"));
}
/*
* Obtains the protocol version from the transport and writes it to
* transport->data->version, first connecting if not already connected.
*
* If the protocol version is one that allows skipping the listing of remote
* refs, and must_list_refs is 0, the listing of remote refs is skipped and
* this function returns NULL. Otherwise, this function returns the list of
* remote refs.
*/
static struct ref *handshake(struct transport *transport, int for_push,
const struct argv_array *ref_prefixes,
int must_list_refs)
{
struct git_transport_data *data = transport->data;
struct ref *refs = NULL;
struct packet_reader reader;
connect_setup(transport, for_push);
packet_reader_init(&reader, data->fd[0], NULL, 0,
PACKET_READ_CHOMP_NEWLINE |
PACKET_READ_GENTLE_ON_EOF |
PACKET_READ_DIE_ON_ERR_PACKET);
data->version = discover_version(&reader);
switch (data->version) {
case protocol_v2:
if (must_list_refs)
get_remote_refs(data->fd[1], &reader, &refs, for_push,
ref_prefixes,
transport->server_options);
break;
case protocol_v1:
case protocol_v0:
die_if_server_options(transport);
get_remote_heads(&reader, &refs,
for_push ? REF_NORMAL : 0,
&data->extra_have,
&data->shallow);
break;
case protocol_unknown_version:
BUG("unknown protocol version");
}
data->got_remote_heads = 1;
if (reader.line_peeked)
BUG("buffer must be empty at the end of handshake()");
return refs;
}
static struct ref *get_refs_via_connect(struct transport *transport, int for_push,
const struct argv_array *ref_prefixes)
{
return handshake(transport, for_push, ref_prefixes, 1);
}
static int fetch_refs_via_pack(struct transport *transport,
int nr_heads, struct ref **to_fetch)
{
int ret = 0;
struct git_transport_data *data = transport->data;
struct ref *refs = NULL;
struct fetch_pack_args args;
struct ref *refs_tmp = NULL;
memset(&args, 0, sizeof(args));
args.uploadpack = data->options.uploadpack;
args.keep_pack = data->options.keep;
args.lock_pack = 1;
args.use_thin_pack = data->options.thin;
args.include_tag = data->options.followtags;
args.verbose = (transport->verbose > 1);
args.quiet = (transport->verbose < 0);
args.no_progress = !transport->progress;
args.depth = data->options.depth;
args.deepen_since = data->options.deepen_since;
args.deepen_not = data->options.deepen_not;
args.deepen_relative = data->options.deepen_relative;
args.check_self_contained_and_connected =
data->options.check_self_contained_and_connected;
args.cloning = transport->cloning;
args.update_shallow = data->options.update_shallow;
args.from_promisor = data->options.from_promisor;
args.no_dependents = data->options.no_dependents;
args.filter_options = data->options.filter_options;
args.stateless_rpc = transport->stateless_rpc;
args.server_options = transport->server_options;
args.negotiation_tips = data->options.negotiation_tips;
if (!data->got_remote_heads) {
int i;
int must_list_refs = 0;
for (i = 0; i < nr_heads; i++) {
if (!to_fetch[i]->exact_oid) {
must_list_refs = 1;
break;
}
}
refs_tmp = handshake(transport, 0, NULL, must_list_refs);
}
switch (data->version) {
case protocol_v2:
refs = fetch_pack(&args, data->fd,
refs_tmp ? refs_tmp : transport->remote_refs,
to_fetch, nr_heads, &data->shallow,
&transport->pack_lockfile, data->version);
break;
case protocol_v1:
case protocol_v0:
die_if_server_options(transport);
refs = fetch_pack(&args, data->fd,
refs_tmp ? refs_tmp : transport->remote_refs,
to_fetch, nr_heads, &data->shallow,
&transport->pack_lockfile, data->version);
break;
case protocol_unknown_version:
BUG("unknown protocol version");
}
close(data->fd[0]);
close(data->fd[1]);
if (finish_connect(data->conn))
ret = -1;
data->conn = NULL;
data->got_remote_heads = 0;
data->options.self_contained_and_connected =
args.self_contained_and_connected;
data->options.connectivity_checked = args.connectivity_checked;
if (refs == NULL)
ret = -1;
if (report_unmatched_refs(to_fetch, nr_heads))
ret = -1;
free_refs(refs_tmp);
free_refs(refs);
return ret;
}
static int push_had_errors(struct ref *ref)
{
for (; ref; ref = ref->next) {
switch (ref->status) {
case REF_STATUS_NONE:
case REF_STATUS_UPTODATE:
case REF_STATUS_OK:
break;
default:
return 1;
}
}
return 0;
}
int transport_refs_pushed(struct ref *ref)
{
for (; ref; ref = ref->next) {
switch(ref->status) {
case REF_STATUS_NONE:
case REF_STATUS_UPTODATE:
break;
default:
return 1;
}
}
return 0;
}
void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
{
struct refspec_item rs;
if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
return;
rs.src = ref->name;
rs.dst = NULL;
if (!remote_find_tracking(remote, &rs)) {
if (verbose)
fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
if (ref->deletion) {
delete_ref(NULL, rs.dst, NULL, 0);
} else
update_ref("update by push", rs.dst, &ref->new_oid,
NULL, 0, 0);
free(rs.dst);
}
}
static void print_ref_status(char flag, const char *summary,
struct ref *to, struct ref *from, const char *msg,
int porcelain, int summary_width)
{
if (porcelain) {
if (from)
fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
else
fprintf(stdout, "%c\t:%s\t", flag, to->name);
if (msg)
fprintf(stdout, "%s (%s)\n", summary, msg);
else
fprintf(stdout, "%s\n", summary);
} else {
const char *red = "", *reset = "";
if (push_had_errors(to)) {
red = transport_get_color(TRANSPORT_COLOR_REJECTED);
reset = transport_get_color(TRANSPORT_COLOR_RESET);
}
fprintf(stderr, " %s%c %-*s%s ", red, flag, summary_width,
summary, reset);
if (from)
fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
else
fputs(prettify_refname(to->name), stderr);
if (msg) {
fputs(" (", stderr);
fputs(msg, stderr);
fputc(')', stderr);
}
fputc('\n', stderr);
}
}
static void print_ok_ref_status(struct ref *ref, int porcelain, int summary_width)
{
if (ref->deletion)
print_ref_status('-', "[deleted]", ref, NULL, NULL,
porcelain, summary_width);
else if (is_null_oid(&ref->old_oid))
print_ref_status('*',
(starts_with(ref->name, "refs/tags/") ? "[new tag]" :
"[new branch]"),
ref, ref->peer_ref, NULL, porcelain, summary_width);
else {
struct strbuf quickref = STRBUF_INIT;
char type;
const char *msg;
strbuf_add_unique_abbrev(&quickref, &ref->old_oid,
DEFAULT_ABBREV);
if (ref->forced_update) {
strbuf_addstr(&quickref, "...");
type = '+';
msg = "forced update";
} else {
strbuf_addstr(&quickref, "..");
type = ' ';
msg = NULL;
}
strbuf_add_unique_abbrev(&quickref, &ref->new_oid,
DEFAULT_ABBREV);
print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg,
porcelain, summary_width);
strbuf_release(&quickref);
}
}
static int print_one_push_status(struct ref *ref, const char *dest, int count,
int porcelain, int summary_width)
{
if (!count) {
char *url = transport_anonymize_url(dest);
fprintf(porcelain ? stdout : stderr, "To %s\n", url);
free(url);
}
switch(ref->status) {
case REF_STATUS_NONE:
print_ref_status('X', "[no match]", ref, NULL, NULL,
porcelain, summary_width);
break;
case REF_STATUS_REJECT_NODELETE:
print_ref_status('!', "[rejected]", ref, NULL,
"remote does not support deleting refs",
porcelain, summary_width);
break;
case REF_STATUS_UPTODATE:
print_ref_status('=', "[up to date]", ref,
ref->peer_ref, NULL, porcelain, summary_width);
break;
case REF_STATUS_REJECT_NONFASTFORWARD:
print_ref_status('!', "[rejected]", ref, ref->peer_ref,
"non-fast-forward", porcelain, summary_width);
break;
case REF_STATUS_REJECT_ALREADY_EXISTS:
print_ref_status('!', "[rejected]", ref, ref->peer_ref,
"already exists", porcelain, summary_width);
break;
case REF_STATUS_REJECT_FETCH_FIRST:
print_ref_status('!', "[rejected]", ref, ref->peer_ref,
"fetch first", porcelain, summary_width);
break;
case REF_STATUS_REJECT_NEEDS_FORCE:
print_ref_status('!', "[rejected]", ref, ref->peer_ref,
"needs force", porcelain, summary_width);
break;
case REF_STATUS_REJECT_STALE:
print_ref_status('!', "[rejected]", ref, ref->peer_ref,
"stale info", porcelain, summary_width);
break;
case REF_STATUS_REJECT_SHALLOW:
print_ref_status('!', "[rejected]", ref, ref->peer_ref,
"new shallow roots not allowed",
porcelain, summary_width);
break;
case REF_STATUS_REMOTE_REJECT:
print_ref_status('!', "[remote rejected]", ref,
ref->deletion ? NULL : ref->peer_ref,
ref->remote_status, porcelain, summary_width);
break;
case REF_STATUS_EXPECTING_REPORT:
print_ref_status('!', "[remote failure]", ref,
ref->deletion ? NULL : ref->peer_ref,
"remote failed to report status",
porcelain, summary_width);
break;
case REF_STATUS_ATOMIC_PUSH_FAILED:
print_ref_status('!', "[rejected]", ref, ref->peer_ref,
"atomic push failed", porcelain, summary_width);
break;
case REF_STATUS_OK:
print_ok_ref_status(ref, porcelain, summary_width);
break;
}
return 1;
}
static int measure_abbrev(const struct object_id *oid, int sofar)
{
char hex[GIT_MAX_HEXSZ + 1];
int w = find_unique_abbrev_r(hex, oid, DEFAULT_ABBREV);
return (w < sofar) ? sofar : w;
}
int transport_summary_width(const struct ref *refs)
{
int maxw = -1;
for (; refs; refs = refs->next) {
maxw = measure_abbrev(&refs->old_oid, maxw);
maxw = measure_abbrev(&refs->new_oid, maxw);
}
if (maxw < 0)
maxw = FALLBACK_DEFAULT_ABBREV;
return (2 * maxw + 3);
}
void transport_print_push_status(const char *dest, struct ref *refs,
int verbose, int porcelain, unsigned int *reject_reasons)
{
struct ref *ref;
int n = 0;
char *head;
int summary_width = transport_summary_width(refs);
if (transport_color_config() < 0)
warning(_("could not parse transport.color.* config"));
head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
if (verbose) {
for (ref = refs; ref; ref = ref->next)
if (ref->status == REF_STATUS_UPTODATE)
n += print_one_push_status(ref, dest, n,
porcelain, summary_width);
}
for (ref = refs; ref; ref = ref->next)
if (ref->status == REF_STATUS_OK)
n += print_one_push_status(ref, dest, n,
porcelain, summary_width);
*reject_reasons = 0;
for (ref = refs; ref; ref = ref->next) {
if (ref->status != REF_STATUS_NONE &&
ref->status != REF_STATUS_UPTODATE &&
ref->status != REF_STATUS_OK)
n += print_one_push_status(ref, dest, n,
porcelain, summary_width);
if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
if (head != NULL && !strcmp(head, ref->name))
*reject_reasons |= REJECT_NON_FF_HEAD;
else
*reject_reasons |= REJECT_NON_FF_OTHER;
} else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
*reject_reasons |= REJECT_ALREADY_EXISTS;
} else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
*reject_reasons |= REJECT_FETCH_FIRST;
} else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
*reject_reasons |= REJECT_NEEDS_FORCE;
}
}
free(head);
}
static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
{
struct git_transport_data *data = transport->data;
struct send_pack_args args;
int ret = 0;
if (transport_color_config() < 0)
return -1;
if (!data->got_remote_heads)
get_refs_via_connect(transport, 1, NULL);
memset(&args, 0, sizeof(args));
args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
args.use_thin_pack = data->options.thin;
args.verbose = (transport->verbose > 0);
args.quiet = (transport->verbose < 0);
args.progress = transport->progress;
args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
args.push_options = transport->push_options;
args.url = transport->url;
if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
else
args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
switch (data->version) {
case protocol_v2:
die(_("support for protocol v2 not implemented yet"));
break;
case protocol_v1:
case protocol_v0:
ret = send_pack(&args, data->fd, data->conn, remote_refs,
&data->extra_have);
break;
case protocol_unknown_version:
BUG("unknown protocol version");
}
close(data->fd[1]);
close(data->fd[0]);
ret |= finish_connect(data->conn);
data->conn = NULL;
data->got_remote_heads = 0;
return ret;
}
static int connect_git(struct transport *transport, const char *name,
const char *executable, int fd[2])
{
struct git_transport_data *data = transport->data;
data->conn = git_connect(data->fd, transport->url,
executable, 0);
fd[0] = data->fd[0];
fd[1] = data->fd[1];
return 0;
}
static int disconnect_git(struct transport *transport)
{
struct git_transport_data *data = transport->data;
if (data->conn) {
if (data->got_remote_heads && !transport->stateless_rpc)
packet_flush(data->fd[1]);
close(data->fd[0]);
close(data->fd[1]);
finish_connect(data->conn);
}
free(data);
return 0;
}
static struct transport_vtable taken_over_vtable = {
NULL,
get_refs_via_connect,
fetch_refs_via_pack,
git_transport_push,
NULL,
disconnect_git
};
void transport_take_over(struct transport *transport,
struct child_process *child)
{
struct git_transport_data *data;
if (!transport->smart_options)
BUG("taking over transport requires non-NULL "
"smart_options field.");
data = xcalloc(1, sizeof(*data));
data->options = *transport->smart_options;
data->conn = child;
data->fd[0] = data->conn->out;
data->fd[1] = data->conn->in;
data->got_remote_heads = 0;
transport->data = data;
transport->vtable = &taken_over_vtable;
transport->smart_options = &(data->options);
transport->cannot_reuse = 1;
}
static int is_file(const char *url)
{
struct stat buf;
if (stat(url, &buf))
return 0;
return S_ISREG(buf.st_mode);
}
static int external_specification_len(const char *url)
{
return strchr(url, ':') - url;
}
static const struct string_list *protocol_whitelist(void)
{
static int enabled = -1;
static struct string_list allowed = STRING_LIST_INIT_DUP;
if (enabled < 0) {
const char *v = getenv("GIT_ALLOW_PROTOCOL");
if (v) {
string_list_split(&allowed, v, ':', -1);
string_list_sort(&allowed);
enabled = 1;
} else {
enabled = 0;
}
}
return enabled ? &allowed : NULL;
}
enum protocol_allow_config {
PROTOCOL_ALLOW_NEVER = 0,
PROTOCOL_ALLOW_USER_ONLY,
PROTOCOL_ALLOW_ALWAYS
};
static enum protocol_allow_config parse_protocol_config(const char *key,
const char *value)
{
if (!strcasecmp(value, "always"))
return PROTOCOL_ALLOW_ALWAYS;
else if (!strcasecmp(value, "never"))
return PROTOCOL_ALLOW_NEVER;
else if (!strcasecmp(value, "user"))
return PROTOCOL_ALLOW_USER_ONLY;
die(_("unknown value for config '%s': %s"), key, value);
}
static enum protocol_allow_config get_protocol_config(const char *type)
{
char *key = xstrfmt("protocol.%s.allow", type);
char *value;
/* first check the per-protocol config */
if (!git_config_get_string(key, &value)) {
enum protocol_allow_config ret =
parse_protocol_config(key, value);
free(key);
free(value);
return ret;
}
free(key);
/* if defined, fallback to user-defined default for unknown protocols */
if (!git_config_get_string("protocol.allow", &value)) {
enum protocol_allow_config ret =
parse_protocol_config("protocol.allow", value);
free(value);
return ret;
}
/* fallback to built-in defaults */
/* known safe */
if (!strcmp(type, "http") ||
!strcmp(type, "https") ||
!strcmp(type, "git") ||
!strcmp(type, "ssh") ||
!strcmp(type, "file"))
return PROTOCOL_ALLOW_ALWAYS;
/* known scary; err on the side of caution */
if (!strcmp(type, "ext"))
return PROTOCOL_ALLOW_NEVER;
/* unknown; by default let them be used only directly by the user */
return PROTOCOL_ALLOW_USER_ONLY;
}
int is_transport_allowed(const char *type, int from_user)
{
const struct string_list *whitelist = protocol_whitelist();
if (whitelist)
return string_list_has_string(whitelist, type);
switch (get_protocol_config(type)) {
case PROTOCOL_ALLOW_ALWAYS:
return 1;
case PROTOCOL_ALLOW_NEVER:
return 0;
case PROTOCOL_ALLOW_USER_ONLY:
if (from_user < 0)
from_user = git_env_bool("GIT_PROTOCOL_FROM_USER", 1);
return from_user;
}
BUG("invalid protocol_allow_config type");
}
void transport_check_allowed(const char *type)
{
if (!is_transport_allowed(type, -1))
die(_("transport '%s' not allowed"), type);
}
static struct transport_vtable bundle_vtable = {
NULL,
get_refs_from_bundle,
fetch_refs_from_bundle,
NULL,
NULL,
close_bundle
};
static struct transport_vtable builtin_smart_vtable = {
NULL,
get_refs_via_connect,
fetch_refs_via_pack,
git_transport_push,
connect_git,
disconnect_git
};
struct transport *transport_get(struct remote *remote, const char *url)
{
const char *helper;
struct transport *ret = xcalloc(1, sizeof(*ret));
ret->progress = isatty(2);
if (!remote)
BUG("No remote provided to transport_get()");
ret->got_remote_refs = 0;
ret->remote = remote;
helper = remote->foreign_vcs;
if (!url && remote->url)
url = remote->url[0];
ret->url = url;
/* maybe it is a foreign URL? */
if (url) {
const char *p = url;
while (is_urlschemechar(p == url, *p))
p++;
if (starts_with(p, "::"))
helper = xstrndup(url, p - url);
}
if (helper) {
transport_helper_init(ret, helper);
} else if (starts_with(url, "rsync:")) {
die(_("git-over-rsync is no longer supported"));
} else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
transport_check_allowed("file");
ret->data = data;
ret->vtable = &bundle_vtable;
ret->smart_options = NULL;
} else if (!is_url(url)
|| starts_with(url, "file://")
|| starts_with(url, "git://")
|| starts_with(url, "ssh://")
|| starts_with(url, "git+ssh://") /* deprecated - do not use */
|| starts_with(url, "ssh+git://") /* deprecated - do not use */
) {
/*
* These are builtin smart transports; "allowed" transports
* will be checked individually in git_connect.
*/
struct git_transport_data *data = xcalloc(1, sizeof(*data));
ret->data = data;
ret->vtable = &builtin_smart_vtable;
ret->smart_options = &(data->options);
data->conn = NULL;
data->got_remote_heads = 0;
} else {
/* Unknown protocol in URL. Pass to external handler. */
int len = external_specification_len(url);
char *handler = xmemdupz(url, len);
transport_helper_init(ret, handler);
}
if (ret->smart_options) {
ret->smart_options->thin = 1;
ret->smart_options->uploadpack = "git-upload-pack";
if (remote->uploadpack)
ret->smart_options->uploadpack = remote->uploadpack;
ret->smart_options->receivepack = "git-receive-pack";
if (remote->receivepack)
ret->smart_options->receivepack = remote->receivepack;
}
return ret;
}
int transport_set_option(struct transport *transport,
const char *name, const char *value)
{
int git_reports = 1, protocol_reports = 1;
if (transport->smart_options)
git_reports = set_git_option(transport->smart_options,