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bundle.c: use a temporary variable for OIDs and names
[git.git] / transport.c
blob95c1138e9ae8855daba67916c9ee0e1a984d8139
1 #include "cache.h"
2 #include "config.h"
3 #include "transport.h"
4 #include "run-command.h"
5 #include "pkt-line.h"
6 #include "fetch-pack.h"
7 #include "remote.h"
8 #include "connect.h"
9 #include "send-pack.h"
10 #include "walker.h"
11 #include "bundle.h"
12 #include "dir.h"
13 #include "refs.h"
14 #include "refspec.h"
15 #include "branch.h"
16 #include "url.h"
17 #include "submodule.h"
18 #include "string-list.h"
19 #include "oid-array.h"
20 #include "sigchain.h"
21 #include "transport-internal.h"
22 #include "protocol.h"
23 #include "object-store.h"
24 #include "color.h"
25
26 static int transport_use_color = -1;
27 static char transport_colors[][COLOR_MAXLEN] = {
28 GIT_COLOR_RESET,
29 GIT_COLOR_RED /* REJECTED */
30 };
31
32 enum color_transport {
33 TRANSPORT_COLOR_RESET = 0,
34 TRANSPORT_COLOR_REJECTED = 1
35 };
36
37 static int transport_color_config(void)
38 {
39 const char *keys[] = {
40 "color.transport.reset",
41 "color.transport.rejected"
42 }, *key = "color.transport";
43 char *value;
44 int i;
45 static int initialized;
46
47 if (initialized)
48 return 0;
49 initialized = 1;
50
51 if (!git_config_get_string(key, &value))
52 transport_use_color = git_config_colorbool(key, value);
53
54 if (!want_color_stderr(transport_use_color))
55 return 0;
56
57 for (i = 0; i < ARRAY_SIZE(keys); i++)
58 if (!git_config_get_string(keys[i], &value)) {
59 if (!value)
60 return config_error_nonbool(keys[i]);
61 if (color_parse(value, transport_colors[i]) < 0)
62 return -1;
63 }
64
65 return 0;
66 }
67
68 static const char *transport_get_color(enum color_transport ix)
69 {
70 if (want_color_stderr(transport_use_color))
71 return transport_colors[ix];
72 return "";
73 }
74
75 static void set_upstreams(struct transport *transport, struct ref *refs,
76 int pretend)
77 {
78 struct ref *ref;
79 for (ref = refs; ref; ref = ref->next) {
80 const char *localname;
81 const char *tmp;
82 const char *remotename;
83 int flag = 0;
84 /*
85 * Check suitability for tracking. Must be successful /
86 * already up-to-date ref create/modify (not delete).
87 */
88 if (ref->status != REF_STATUS_OK &&
89 ref->status != REF_STATUS_UPTODATE)
90 continue;
91 if (!ref->peer_ref)
92 continue;
93 if (is_null_oid(&ref->new_oid))
94 continue;
95
96 /* Follow symbolic refs (mainly for HEAD). */
97 localname = ref->peer_ref->name;
98 remotename = ref->name;
99 tmp = resolve_ref_unsafe(localname, RESOLVE_REF_READING,
100 NULL, &flag);
101 if (tmp && flag & REF_ISSYMREF &&
102 starts_with(tmp, "refs/heads/"))
103 localname = tmp;
104
105 /* Both source and destination must be local branches. */
106 if (!localname || !starts_with(localname, "refs/heads/"))
107 continue;
108 if (!remotename || !starts_with(remotename, "refs/heads/"))
109 continue;
110
111 if (!pretend) {
112 int flag = transport->verbose < 0 ? 0 : BRANCH_CONFIG_VERBOSE;
113 install_branch_config(flag, localname + 11,
114 transport->remote->name, remotename);
115 } else if (transport->verbose >= 0)
116 printf(_("Would set upstream of '%s' to '%s' of '%s'\n"),
117 localname + 11, remotename + 11,
118 transport->remote->name);
119 }
120 }
121
122 struct bundle_transport_data {
123 int fd;
124 struct bundle_header header;
125 unsigned get_refs_from_bundle_called : 1;
126 };
127
128 static struct ref *get_refs_from_bundle(struct transport *transport,
129 int for_push,
130 struct transport_ls_refs_options *transport_options)
131 {
132 struct bundle_transport_data *data = transport->data;
133 struct ref *result = NULL;
134 int i;
135
136 if (for_push)
137 return NULL;
138
139 data->get_refs_from_bundle_called = 1;
140
141 if (data->fd > 0)
142 close(data->fd);
143 data->fd = read_bundle_header(transport->url, &data->header);
144 if (data->fd < 0)
145 die(_("could not read bundle '%s'"), transport->url);
146
147 transport->hash_algo = data->header.hash_algo;
148
149 for (i = 0; i < data->header.references.nr; i++) {
150 struct ref_list_entry *e = data->header.references.list + i;
151 const char *name = e->name;
152 struct ref *ref = alloc_ref(name);
153 struct object_id *oid = &e->oid;
154 oidcpy(&ref->old_oid, oid);
155 ref->next = result;
156 result = ref;
157 }
158 return result;
159 }
160
161 static int fetch_refs_from_bundle(struct transport *transport,
162 int nr_heads, struct ref **to_fetch)
163 {
164 struct bundle_transport_data *data = transport->data;
165 int ret;
166
167 if (!data->get_refs_from_bundle_called)
168 get_refs_from_bundle(transport, 0, NULL);
169 ret = unbundle(the_repository, &data->header, data->fd,
170 transport->progress ? BUNDLE_VERBOSE : 0);
171 transport->hash_algo = data->header.hash_algo;
172 return ret;
173 }
174
175 static int close_bundle(struct transport *transport)
176 {
177 struct bundle_transport_data *data = transport->data;
178 if (data->fd > 0)
179 close(data->fd);
180 free(data);
181 return 0;
182 }
183
184 struct git_transport_data {
185 struct git_transport_options options;
186 struct child_process *conn;
187 int fd[2];
188 unsigned got_remote_heads : 1;
189 enum protocol_version version;
190 struct oid_array extra_have;
191 struct oid_array shallow;
192 };
193
194 static int set_git_option(struct git_transport_options *opts,
195 const char *name, const char *value)
196 {
197 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
198 opts->uploadpack = value;
199 return 0;
200 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
201 opts->receivepack = value;
202 return 0;
203 } else if (!strcmp(name, TRANS_OPT_THIN)) {
204 opts->thin = !!value;
205 return 0;
206 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
207 opts->followtags = !!value;
208 return 0;
209 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
210 opts->keep = !!value;
211 return 0;
212 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
213 opts->update_shallow = !!value;
214 return 0;
215 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
216 if (!value)
217 opts->depth = 0;
218 else {
219 char *end;
220 opts->depth = strtol(value, &end, 0);
221 if (*end)
222 die(_("transport: invalid depth option '%s'"), value);
223 }
224 return 0;
225 } else if (!strcmp(name, TRANS_OPT_DEEPEN_SINCE)) {
226 opts->deepen_since = value;
227 return 0;
228 } else if (!strcmp(name, TRANS_OPT_DEEPEN_NOT)) {
229 opts->deepen_not = (const struct string_list *)value;
230 return 0;
231 } else if (!strcmp(name, TRANS_OPT_DEEPEN_RELATIVE)) {
232 opts->deepen_relative = !!value;
233 return 0;
234 } else if (!strcmp(name, TRANS_OPT_FROM_PROMISOR)) {
235 opts->from_promisor = !!value;
236 return 0;
237 } else if (!strcmp(name, TRANS_OPT_LIST_OBJECTS_FILTER)) {
238 list_objects_filter_die_if_populated(&opts->filter_options);
239 parse_list_objects_filter(&opts->filter_options, value);
240 return 0;
241 } else if (!strcmp(name, TRANS_OPT_REJECT_SHALLOW)) {
242 opts->reject_shallow = !!value;
243 return 0;
244 }
245 return 1;
246 }
247
248 static int connect_setup(struct transport *transport, int for_push)
249 {
250 struct git_transport_data *data = transport->data;
251 int flags = transport->verbose > 0 ? CONNECT_VERBOSE : 0;
252
253 if (data->conn)
254 return 0;
255
256 switch (transport->family) {
257 case TRANSPORT_FAMILY_ALL: break;
258 case TRANSPORT_FAMILY_IPV4: flags |= CONNECT_IPV4; break;
259 case TRANSPORT_FAMILY_IPV6: flags |= CONNECT_IPV6; break;
260 }
261
262 data->conn = git_connect(data->fd, transport->url,
263 for_push ? data->options.receivepack :
264 data->options.uploadpack,
265 flags);
266
267 return 0;
268 }
269
270 static void die_if_server_options(struct transport *transport)
271 {
272 if (!transport->server_options || !transport->server_options->nr)
273 return;
274 advise(_("see protocol.version in 'git help config' for more details"));
275 die(_("server options require protocol version 2 or later"));
276 }
277
278 /*
279 * Obtains the protocol version from the transport and writes it to
280 * transport->data->version, first connecting if not already connected.
281 *
282 * If the protocol version is one that allows skipping the listing of remote
283 * refs, and must_list_refs is 0, the listing of remote refs is skipped and
284 * this function returns NULL. Otherwise, this function returns the list of
285 * remote refs.
286 */
287 static struct ref *handshake(struct transport *transport, int for_push,
288 struct transport_ls_refs_options *options,
289 int must_list_refs)
290 {
291 struct git_transport_data *data = transport->data;
292 struct ref *refs = NULL;
293 struct packet_reader reader;
294 int sid_len;
295 const char *server_sid;
296
297 connect_setup(transport, for_push);
298
299 packet_reader_init(&reader, data->fd[0], NULL, 0,
300 PACKET_READ_CHOMP_NEWLINE |
301 PACKET_READ_GENTLE_ON_EOF |
302 PACKET_READ_DIE_ON_ERR_PACKET);
303
304 data->version = discover_version(&reader);
305 switch (data->version) {
306 case protocol_v2:
307 if (server_feature_v2("session-id", &server_sid))
308 trace2_data_string("transfer", NULL, "server-sid", server_sid);
309 if (must_list_refs)
310 get_remote_refs(data->fd[1], &reader, &refs, for_push,
311 options,
312 transport->server_options,
313 transport->stateless_rpc);
314 break;
315 case protocol_v1:
316 case protocol_v0:
317 die_if_server_options(transport);
318 get_remote_heads(&reader, &refs,
319 for_push ? REF_NORMAL : 0,
320 &data->extra_have,
321 &data->shallow);
322 server_sid = server_feature_value("session-id", &sid_len);
323 if (server_sid) {
324 char *sid = xstrndup(server_sid, sid_len);
325 trace2_data_string("transfer", NULL, "server-sid", sid);
326 free(sid);
327 }
328 break;
329 case protocol_unknown_version:
330 BUG("unknown protocol version");
331 }
332 data->got_remote_heads = 1;
333 transport->hash_algo = reader.hash_algo;
334
335 if (reader.line_peeked)
336 BUG("buffer must be empty at the end of handshake()");
337
338 return refs;
339 }
340
341 static struct ref *get_refs_via_connect(struct transport *transport, int for_push,
342 struct transport_ls_refs_options *options)
343 {
344 return handshake(transport, for_push, options, 1);
345 }
346
347 static int fetch_refs_via_pack(struct transport *transport,
348 int nr_heads, struct ref **to_fetch)
349 {
350 int ret = 0;
351 struct git_transport_data *data = transport->data;
352 struct ref *refs = NULL;
353 struct fetch_pack_args args;
354 struct ref *refs_tmp = NULL;
355
356 memset(&args, 0, sizeof(args));
357 args.uploadpack = data->options.uploadpack;
358 args.keep_pack = data->options.keep;
359 args.lock_pack = 1;
360 args.use_thin_pack = data->options.thin;
361 args.include_tag = data->options.followtags;
362 args.verbose = (transport->verbose > 1);
363 args.quiet = (transport->verbose < 0);
364 args.no_progress = !transport->progress;
365 args.depth = data->options.depth;
366 args.deepen_since = data->options.deepen_since;
367 args.deepen_not = data->options.deepen_not;
368 args.deepen_relative = data->options.deepen_relative;
369 args.check_self_contained_and_connected =
370 data->options.check_self_contained_and_connected;
371 args.cloning = transport->cloning;
372 args.update_shallow = data->options.update_shallow;
373 args.from_promisor = data->options.from_promisor;
374 args.filter_options = data->options.filter_options;
375 args.stateless_rpc = transport->stateless_rpc;
376 args.server_options = transport->server_options;
377 args.negotiation_tips = data->options.negotiation_tips;
378 args.reject_shallow_remote = transport->smart_options->reject_shallow;
379
380 if (!data->got_remote_heads) {
381 int i;
382 int must_list_refs = 0;
383 for (i = 0; i < nr_heads; i++) {
384 if (!to_fetch[i]->exact_oid) {
385 must_list_refs = 1;
386 break;
387 }
388 }
389 refs_tmp = handshake(transport, 0, NULL, must_list_refs);
390 }
391
392 if (data->version == protocol_unknown_version)
393 BUG("unknown protocol version");
394 else if (data->version <= protocol_v1)
395 die_if_server_options(transport);
396
397 if (data->options.acked_commits) {
398 if (data->version < protocol_v2) {
399 warning(_("--negotiate-only requires protocol v2"));
400 ret = -1;
401 } else if (!server_supports_feature("fetch", "wait-for-done", 0)) {
402 warning(_("server does not support wait-for-done"));
403 ret = -1;
404 } else {
405 negotiate_using_fetch(data->options.negotiation_tips,
406 transport->server_options,
407 transport->stateless_rpc,
408 data->fd,
409 data->options.acked_commits);
410 ret = 0;
411 }
412 goto cleanup;
413 }
414
415 refs = fetch_pack(&args, data->fd,
416 refs_tmp ? refs_tmp : transport->remote_refs,
417 to_fetch, nr_heads, &data->shallow,
418 &transport->pack_lockfiles, data->version);
419
420 data->got_remote_heads = 0;
421 data->options.self_contained_and_connected =
422 args.self_contained_and_connected;
423 data->options.connectivity_checked = args.connectivity_checked;
424
425 if (refs == NULL)
426 ret = -1;
427 if (report_unmatched_refs(to_fetch, nr_heads))
428 ret = -1;
429
430 cleanup:
431 close(data->fd[0]);
432 if (data->fd[1] >= 0)
433 close(data->fd[1]);
434 if (finish_connect(data->conn))
435 ret = -1;
436 data->conn = NULL;
437
438 free_refs(refs_tmp);
439 free_refs(refs);
440 return ret;
441 }
442
443 static int push_had_errors(struct ref *ref)
444 {
445 for (; ref; ref = ref->next) {
446 switch (ref->status) {
447 case REF_STATUS_NONE:
448 case REF_STATUS_UPTODATE:
449 case REF_STATUS_OK:
450 break;
451 default:
452 return 1;
453 }
454 }
455 return 0;
456 }
457
458 int transport_refs_pushed(struct ref *ref)
459 {
460 for (; ref; ref = ref->next) {
461 switch(ref->status) {
462 case REF_STATUS_NONE:
463 case REF_STATUS_UPTODATE:
464 break;
465 default:
466 return 1;
467 }
468 }
469 return 0;
470 }
471
472 static void update_one_tracking_ref(struct remote *remote, char *refname,
473 struct object_id *new_oid, int deletion,
474 int verbose)
475 {
476 struct refspec_item rs;
477
478 memset(&rs, 0, sizeof(rs));
479 rs.src = refname;
480 rs.dst = NULL;
481
482 if (!remote_find_tracking(remote, &rs)) {
483 if (verbose)
484 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
485 if (deletion)
486 delete_ref(NULL, rs.dst, NULL, 0);
487 else
488 update_ref("update by push", rs.dst, new_oid,
489 NULL, 0, 0);
490 free(rs.dst);
491 }
492 }
493
494 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
495 {
496 char *refname;
497 struct object_id *new_oid;
498 struct ref_push_report *report;
499
500 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
501 return;
502
503 report = ref->report;
504 if (!report)
505 update_one_tracking_ref(remote, ref->name, &ref->new_oid,
506 ref->deletion, verbose);
507 else
508 for (; report; report = report->next) {
509 refname = report->ref_name ? (char *)report->ref_name : ref->name;
510 new_oid = report->new_oid ? report->new_oid : &ref->new_oid;
511 update_one_tracking_ref(remote, refname, new_oid,
512 is_null_oid(new_oid), verbose);
513 }
514 }
515
516 static void print_ref_status(char flag, const char *summary,
517 struct ref *to, struct ref *from, const char *msg,
518 struct ref_push_report *report,
519 int porcelain, int summary_width)
520 {
521 const char *to_name;
522
523 if (report && report->ref_name)
524 to_name = report->ref_name;
525 else
526 to_name = to->name;
527
528 if (porcelain) {
529 if (from)
530 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to_name);
531 else
532 fprintf(stdout, "%c\t:%s\t", flag, to_name);
533 if (msg)
534 fprintf(stdout, "%s (%s)\n", summary, msg);
535 else
536 fprintf(stdout, "%s\n", summary);
537 } else {
538 const char *red = "", *reset = "";
539 if (push_had_errors(to)) {
540 red = transport_get_color(TRANSPORT_COLOR_REJECTED);
541 reset = transport_get_color(TRANSPORT_COLOR_RESET);
542 }
543 fprintf(stderr, " %s%c %-*s%s ", red, flag, summary_width,
544 summary, reset);
545 if (from)
546 fprintf(stderr, "%s -> %s",
547 prettify_refname(from->name),
548 prettify_refname(to_name));
549 else
550 fputs(prettify_refname(to_name), stderr);
551 if (msg) {
552 fputs(" (", stderr);
553 fputs(msg, stderr);
554 fputc(')', stderr);
555 }
556 fputc('\n', stderr);
557 }
558 }
559
560 static void print_ok_ref_status(struct ref *ref,
561 struct ref_push_report *report,
562 int porcelain, int summary_width)
563 {
564 struct object_id *old_oid;
565 struct object_id *new_oid;
566 const char *ref_name;
567 int forced_update;
568
569 if (report && report->old_oid)
570 old_oid = report->old_oid;
571 else
572 old_oid = &ref->old_oid;
573 if (report && report->new_oid)
574 new_oid = report->new_oid;
575 else
576 new_oid = &ref->new_oid;
577 if (report && report->forced_update)
578 forced_update = report->forced_update;
579 else
580 forced_update = ref->forced_update;
581 if (report && report->ref_name)
582 ref_name = report->ref_name;
583 else
584 ref_name = ref->name;
585
586 if (ref->deletion)
587 print_ref_status('-', "[deleted]", ref, NULL, NULL,
588 report, porcelain, summary_width);
589 else if (is_null_oid(old_oid))
590 print_ref_status('*',
591 (starts_with(ref_name, "refs/tags/")
592 ? "[new tag]"
593 : (starts_with(ref_name, "refs/heads/")
594 ? "[new branch]"
595 : "[new reference]")),
596 ref, ref->peer_ref, NULL,
597 report, porcelain, summary_width);
598 else {
599 struct strbuf quickref = STRBUF_INIT;
600 char type;
601 const char *msg;
602
603 strbuf_add_unique_abbrev(&quickref, old_oid,
604 DEFAULT_ABBREV);
605 if (forced_update) {
606 strbuf_addstr(&quickref, "...");
607 type = '+';
608 msg = "forced update";
609 } else {
610 strbuf_addstr(&quickref, "..");
611 type = ' ';
612 msg = NULL;
613 }
614 strbuf_add_unique_abbrev(&quickref, new_oid,
615 DEFAULT_ABBREV);
616
617 print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg,
618 report, porcelain, summary_width);
619 strbuf_release(&quickref);
620 }
621 }
622
623 static int print_one_push_report(struct ref *ref, const char *dest, int count,
624 struct ref_push_report *report,
625 int porcelain, int summary_width)
626 {
627 if (!count) {
628 char *url = transport_anonymize_url(dest);
629 fprintf(porcelain ? stdout : stderr, "To %s\n", url);
630 free(url);
631 }
632
633 switch(ref->status) {
634 case REF_STATUS_NONE:
635 print_ref_status('X', "[no match]", ref, NULL, NULL,
636 report, porcelain, summary_width);
637 break;
638 case REF_STATUS_REJECT_NODELETE:
639 print_ref_status('!', "[rejected]", ref, NULL,
640 "remote does not support deleting refs",
641 report, porcelain, summary_width);
642 break;
643 case REF_STATUS_UPTODATE:
644 print_ref_status('=', "[up to date]", ref,
645 ref->peer_ref, NULL,
646 report, porcelain, summary_width);
647 break;
648 case REF_STATUS_REJECT_NONFASTFORWARD:
649 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
650 "non-fast-forward",
651 report, porcelain, summary_width);
652 break;
653 case REF_STATUS_REJECT_ALREADY_EXISTS:
654 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
655 "already exists",
656 report, porcelain, summary_width);
657 break;
658 case REF_STATUS_REJECT_FETCH_FIRST:
659 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
660 "fetch first",
661 report, porcelain, summary_width);
662 break;
663 case REF_STATUS_REJECT_NEEDS_FORCE:
664 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
665 "needs force",
666 report, porcelain, summary_width);
667 break;
668 case REF_STATUS_REJECT_STALE:
669 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
670 "stale info",
671 report, porcelain, summary_width);
672 break;
673 case REF_STATUS_REJECT_REMOTE_UPDATED:
674 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
675 "remote ref updated since checkout",
676 report, porcelain, summary_width);
677 break;
678 case REF_STATUS_REJECT_SHALLOW:
679 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
680 "new shallow roots not allowed",
681 report, porcelain, summary_width);
682 break;
683 case REF_STATUS_REMOTE_REJECT:
684 print_ref_status('!', "[remote rejected]", ref,
685 ref->deletion ? NULL : ref->peer_ref,
686 ref->remote_status,
687 report, porcelain, summary_width);
688 break;
689 case REF_STATUS_EXPECTING_REPORT:
690 print_ref_status('!', "[remote failure]", ref,
691 ref->deletion ? NULL : ref->peer_ref,
692 "remote failed to report status",
693 report, porcelain, summary_width);
694 break;
695 case REF_STATUS_ATOMIC_PUSH_FAILED:
696 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
697 "atomic push failed",
698 report, porcelain, summary_width);
699 break;
700 case REF_STATUS_OK:
701 print_ok_ref_status(ref, report, porcelain, summary_width);
702 break;
703 }
704
705 return 1;
706 }
707
708 static int print_one_push_status(struct ref *ref, const char *dest, int count,
709 int porcelain, int summary_width)
710 {
711 struct ref_push_report *report;
712 int n = 0;
713
714 if (!ref->report)
715 return print_one_push_report(ref, dest, count,
716 NULL, porcelain, summary_width);
717
718 for (report = ref->report; report; report = report->next)
719 print_one_push_report(ref, dest, count + n++,
720 report, porcelain, summary_width);
721 return n;
722 }
723
724 static int measure_abbrev(const struct object_id *oid, int sofar)
725 {
726 char hex[GIT_MAX_HEXSZ + 1];
727 int w = find_unique_abbrev_r(hex, oid, DEFAULT_ABBREV);
728
729 return (w < sofar) ? sofar : w;
730 }
731
732 int transport_summary_width(const struct ref *refs)
733 {
734 int maxw = -1;
735
736 for (; refs; refs = refs->next) {
737 maxw = measure_abbrev(&refs->old_oid, maxw);
738 maxw = measure_abbrev(&refs->new_oid, maxw);
739 }
740 if (maxw < 0)
741 maxw = FALLBACK_DEFAULT_ABBREV;
742 return (2 * maxw + 3);
743 }
744
745 void transport_print_push_status(const char *dest, struct ref *refs,
746 int verbose, int porcelain, unsigned int *reject_reasons)
747 {
748 struct ref *ref;
749 int n = 0;
750 char *head;
751 int summary_width = transport_summary_width(refs);
752
753 if (transport_color_config() < 0)
754 warning(_("could not parse transport.color.* config"));
755
756 head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
757
758 if (verbose) {
759 for (ref = refs; ref; ref = ref->next)
760 if (ref->status == REF_STATUS_UPTODATE)
761 n += print_one_push_status(ref, dest, n,
762 porcelain, summary_width);
763 }
764
765 for (ref = refs; ref; ref = ref->next)
766 if (ref->status == REF_STATUS_OK)
767 n += print_one_push_status(ref, dest, n,
768 porcelain, summary_width);
769
770 *reject_reasons = 0;
771 for (ref = refs; ref; ref = ref->next) {
772 if (ref->status != REF_STATUS_NONE &&
773 ref->status != REF_STATUS_UPTODATE &&
774 ref->status != REF_STATUS_OK)
775 n += print_one_push_status(ref, dest, n,
776 porcelain, summary_width);
777 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
778 if (head != NULL && !strcmp(head, ref->name))
779 *reject_reasons |= REJECT_NON_FF_HEAD;
780 else
781 *reject_reasons |= REJECT_NON_FF_OTHER;
782 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
783 *reject_reasons |= REJECT_ALREADY_EXISTS;
784 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
785 *reject_reasons |= REJECT_FETCH_FIRST;
786 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
787 *reject_reasons |= REJECT_NEEDS_FORCE;
788 } else if (ref->status == REF_STATUS_REJECT_REMOTE_UPDATED) {
789 *reject_reasons |= REJECT_REF_NEEDS_UPDATE;
790 }
791 }
792 free(head);
793 }
794
795 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
796 {
797 struct git_transport_data *data = transport->data;
798 struct send_pack_args args;
799 int ret = 0;
800
801 if (transport_color_config() < 0)
802 return -1;
803
804 if (!data->got_remote_heads)
805 get_refs_via_connect(transport, 1, NULL);
806
807 memset(&args, 0, sizeof(args));
808 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
809 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
810 args.use_thin_pack = data->options.thin;
811 args.verbose = (transport->verbose > 0);
812 args.quiet = (transport->verbose < 0);
813 args.progress = transport->progress;
814 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
815 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
816 args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
817 args.push_options = transport->push_options;
818 args.url = transport->url;
819
820 if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
821 args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
822 else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
823 args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
824 else
825 args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
826
827 switch (data->version) {
828 case protocol_v2:
829 die(_("support for protocol v2 not implemented yet"));
830 break;
831 case protocol_v1:
832 case protocol_v0:
833 ret = send_pack(&args, data->fd, data->conn, remote_refs,
834 &data->extra_have);
835 break;
836 case protocol_unknown_version:
837 BUG("unknown protocol version");
838 }
839
840 close(data->fd[1]);
841 close(data->fd[0]);
842 /*
843 * Atomic push may abort the connection early and close the pipe,
844 * which may cause an error for `finish_connect()`. Ignore this error
845 * for atomic git-push.
846 */
847 if (ret || args.atomic)
848 finish_connect(data->conn);
849 else
850 ret = finish_connect(data->conn);
851 data->conn = NULL;
852 data->got_remote_heads = 0;
853
854 return ret;
855 }
856
857 static int connect_git(struct transport *transport, const char *name,
858 const char *executable, int fd[2])
859 {
860 struct git_transport_data *data = transport->data;
861 data->conn = git_connect(data->fd, transport->url,
862 executable, 0);
863 fd[0] = data->fd[0];
864 fd[1] = data->fd[1];
865 return 0;
866 }
867
868 static int disconnect_git(struct transport *transport)
869 {
870 struct git_transport_data *data = transport->data;
871 if (data->conn) {
872 if (data->got_remote_heads && !transport->stateless_rpc)
873 packet_flush(data->fd[1]);
874 close(data->fd[0]);
875 if (data->fd[1] >= 0)
876 close(data->fd[1]);
877 finish_connect(data->conn);
878 }
879
880 free(data);
881 return 0;
882 }
883
884 static struct transport_vtable taken_over_vtable = {
885 NULL,
886 get_refs_via_connect,
887 fetch_refs_via_pack,
888 git_transport_push,
889 NULL,
890 disconnect_git
891 };
892
893 void transport_take_over(struct transport *transport,
894 struct child_process *child)
895 {
896 struct git_transport_data *data;
897
898 if (!transport->smart_options)
899 BUG("taking over transport requires non-NULL "
900 "smart_options field.");
901
902 CALLOC_ARRAY(data, 1);
903 data->options = *transport->smart_options;
904 data->conn = child;
905 data->fd[0] = data->conn->out;
906 data->fd[1] = data->conn->in;
907 data->got_remote_heads = 0;
908 transport->data = data;
909
910 transport->vtable = &taken_over_vtable;
911 transport->smart_options = &(data->options);
912
913 transport->cannot_reuse = 1;
914 }
915
916 static int is_file(const char *url)
917 {
918 struct stat buf;
919 if (stat(url, &buf))
920 return 0;
921 return S_ISREG(buf.st_mode);
922 }
923
924 static int external_specification_len(const char *url)
925 {
926 return strchr(url, ':') - url;
927 }
928
929 static const struct string_list *protocol_whitelist(void)
930 {
931 static int enabled = -1;
932 static struct string_list allowed = STRING_LIST_INIT_DUP;
933
934 if (enabled < 0) {
935 const char *v = getenv("GIT_ALLOW_PROTOCOL");
936 if (v) {
937 string_list_split(&allowed, v, ':', -1);
938 string_list_sort(&allowed);
939 enabled = 1;
940 } else {
941 enabled = 0;
942 }
943 }
944
945 return enabled ? &allowed : NULL;
946 }
947
948 enum protocol_allow_config {
949 PROTOCOL_ALLOW_NEVER = 0,
950 PROTOCOL_ALLOW_USER_ONLY,
951 PROTOCOL_ALLOW_ALWAYS
952 };
953
954 static enum protocol_allow_config parse_protocol_config(const char *key,
955 const char *value)
956 {
957 if (!strcasecmp(value, "always"))
958 return PROTOCOL_ALLOW_ALWAYS;
959 else if (!strcasecmp(value, "never"))
960 return PROTOCOL_ALLOW_NEVER;
961 else if (!strcasecmp(value, "user"))
962 return PROTOCOL_ALLOW_USER_ONLY;
963
964 die(_("unknown value for config '%s': %s"), key, value);
965 }
966
967 static enum protocol_allow_config get_protocol_config(const char *type)
968 {
969 char *key = xstrfmt("protocol.%s.allow", type);
970 char *value;
971
972 /* first check the per-protocol config */
973 if (!git_config_get_string(key, &value)) {
974 enum protocol_allow_config ret =
975 parse_protocol_config(key, value);
976 free(key);
977 free(value);
978 return ret;
979 }
980 free(key);
981
982 /* if defined, fallback to user-defined default for unknown protocols */
983 if (!git_config_get_string("protocol.allow", &value)) {
984 enum protocol_allow_config ret =
985 parse_protocol_config("protocol.allow", value);
986 free(value);
987 return ret;
988 }
989
990 /* fallback to built-in defaults */
991 /* known safe */
992 if (!strcmp(type, "http") ||
993 !strcmp(type, "https") ||
994 !strcmp(type, "git") ||
995 !strcmp(type, "ssh") ||
996 !strcmp(type, "file"))
997 return PROTOCOL_ALLOW_ALWAYS;
998
999 /* known scary; err on the side of caution */
1000 if (!strcmp(type, "ext"))
1001 return PROTOCOL_ALLOW_NEVER;
1002
1003 /* unknown; by default let them be used only directly by the user */
1004 return PROTOCOL_ALLOW_USER_ONLY;
1005 }
1006
1007 int is_transport_allowed(const char *type, int from_user)
1008 {
1009 const struct string_list *whitelist = protocol_whitelist();
1010 if (whitelist)
1011 return string_list_has_string(whitelist, type);
1012
1013 switch (get_protocol_config(type)) {
1014 case PROTOCOL_ALLOW_ALWAYS:
1015 return 1;
1016 case PROTOCOL_ALLOW_NEVER:
1017 return 0;
1018 case PROTOCOL_ALLOW_USER_ONLY:
1019 if (from_user < 0)
1020 from_user = git_env_bool("GIT_PROTOCOL_FROM_USER", 1);
1021 return from_user;
1022 }
1023
1024 BUG("invalid protocol_allow_config type");
1025 }
1026
1027 void transport_check_allowed(const char *type)
1028 {
1029 if (!is_transport_allowed(type, -1))
1030 die(_("transport '%s' not allowed"), type);
1031 }
1032
1033 static struct transport_vtable bundle_vtable = {
1034 NULL,
1035 get_refs_from_bundle,
1036 fetch_refs_from_bundle,
1037 NULL,
1038 NULL,
1039 close_bundle
1040 };
1041
1042 static struct transport_vtable builtin_smart_vtable = {
1043 NULL,
1044 get_refs_via_connect,
1045 fetch_refs_via_pack,
1046 git_transport_push,
1047 connect_git,
1048 disconnect_git
1049 };
1050
1051 struct transport *transport_get(struct remote *remote, const char *url)
1052 {
1053 const char *helper;
1054 struct transport *ret = xcalloc(1, sizeof(*ret));
1055
1056 ret->progress = isatty(2);
1057 string_list_init(&ret->pack_lockfiles, 1);
1058
1059 if (!remote)
1060 BUG("No remote provided to transport_get()");
1061
1062 ret->got_remote_refs = 0;
1063 ret->remote = remote;
1064 helper = remote->foreign_vcs;
1065
1066 if (!url && remote->url)
1067 url = remote->url[0];
1068 ret->url = url;
1069
1070 /* maybe it is a foreign URL? */
1071 if (url) {
1072 const char *p = url;
1073
1074 while (is_urlschemechar(p == url, *p))
1075 p++;
1076 if (starts_with(p, "::"))
1077 helper = xstrndup(url, p - url);
1078 }
1079
1080 if (helper) {
1081 transport_helper_init(ret, helper);
1082 } else if (starts_with(url, "rsync:")) {
1083 die(_("git-over-rsync is no longer supported"));
1084 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
1085 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
1086 transport_check_allowed("file");
1087 ret->data = data;
1088 ret->vtable = &bundle_vtable;
1089 ret->smart_options = NULL;
1090 } else if (!is_url(url)
1091 || starts_with(url, "file://")
1092 || starts_with(url, "git://")
1093 || starts_with(url, "ssh://")
1094 || starts_with(url, "git+ssh://") /* deprecated - do not use */
1095 || starts_with(url, "ssh+git://") /* deprecated - do not use */
1096 ) {
1097 /*
1098 * These are builtin smart transports; "allowed" transports
1099 * will be checked individually in git_connect.
1100 */
1101 struct git_transport_data *data = xcalloc(1, sizeof(*data));
1102 ret->data = data;
1103 ret->vtable = &builtin_smart_vtable;
1104 ret->smart_options = &(data->options);
1105
1106 data->conn = NULL;
1107 data->got_remote_heads = 0;
1108 } else {
1109 /* Unknown protocol in URL. Pass to external handler. */
1110 int len = external_specification_len(url);
1111 char *handler = xmemdupz(url, len);
1112 transport_helper_init(ret, handler);
1113 }
1114
1115 if (ret->smart_options) {
1116 ret->smart_options->thin = 1;
1117 ret->smart_options->uploadpack = "git-upload-pack";
1118 if (remote->uploadpack)
1119 ret->smart_options->uploadpack = remote->uploadpack;
1120 ret->smart_options->receivepack = "git-receive-pack";
1121 if (remote->receivepack)
1122 ret->smart_options->receivepack = remote->receivepack;
1123 }
1124
1125 ret->hash_algo = &hash_algos[GIT_HASH_SHA1];
1126
1127 return ret;
1128 }
1129
1130 const struct git_hash_algo *transport_get_hash_algo(struct transport *transport)
1131 {
1132 return transport->hash_algo;
1133 }
1134
1135 int transport_set_option(struct transport *transport,
1136 const char *name, const char *value)
1137 {
1138 int git_reports = 1, protocol_reports = 1;
1139
1140 if (transport->smart_options)
1141 git_reports = set_git_option(transport->smart_options,
1142 name, value);
1143
1144 if (transport->vtable->set_option)
1145 protocol_reports = transport->vtable->set_option(transport,
1146 name, value);
1147
1148 /* If either report is 0, report 0 (success). */
1149 if (!git_reports || !protocol_reports)
1150 return 0;
1151 /* If either reports -1 (invalid value), report -1. */
1152 if ((git_reports == -1) || (protocol_reports == -1))
1153 return -1;
1154 /* Otherwise if both report unknown, report unknown. */
1155 return 1;
1156 }
1157
1158 void transport_set_verbosity(struct transport *transport, int verbosity,
1159 int force_progress)
1160 {
1161 if (verbosity >= 1)
1162 transport->verbose = verbosity <= 3 ? verbosity : 3;
1163 if (verbosity < 0)
1164 transport->verbose = -1;
1165
1166 /**
1167 * Rules used to determine whether to report progress (processing aborts
1168 * when a rule is satisfied):
1169 *
1170 * . Report progress, if force_progress is 1 (ie. --progress).
1171 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1172 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1173 * . Report progress if isatty(2) is 1.
1174 **/
1175 if (force_progress >= 0)
1176 transport->progress = !!force_progress;
1177 else
1178 transport->progress = verbosity >= 0 && isatty(2);
1179 }
1180
1181 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1182 {
1183 int i;
1184
1185 fprintf(stderr, _("The following submodule paths contain changes that can\n"
1186 "not be found on any remote:\n"));
1187 for (i = 0; i < needs_pushing->nr; i++)
1188 fprintf(stderr, " %s\n", needs_pushing->items[i].string);
1189 fprintf(stderr, _("\nPlease try\n\n"
1190 " git push --recurse-submodules=on-demand\n\n"
1191 "or cd to the path and use\n\n"
1192 " git push\n\n"
1193 "to push them to a remote.\n\n"));
1194
1195 string_list_clear(needs_pushing, 0);
1196
1197 die(_("Aborting."));
1198 }
1199
1200 static int run_pre_push_hook(struct transport *transport,
1201 struct ref *remote_refs)
1202 {
1203 int ret = 0, x;
1204 struct ref *r;
1205 struct child_process proc = CHILD_PROCESS_INIT;
1206 struct strbuf buf;
1207 const char *argv[4];
1208
1209 if (!(argv[0] = find_hook("pre-push")))
1210 return 0;
1211
1212 argv[1] = transport->remote->name;
1213 argv[2] = transport->url;
1214 argv[3] = NULL;
1215
1216 proc.argv = argv;
1217 proc.in = -1;
1218 proc.trace2_hook_name = "pre-push";
1219
1220 if (start_command(&proc)) {
1221 finish_command(&proc);
1222 return -1;
1223 }
1224
1225 sigchain_push(SIGPIPE, SIG_IGN);
1226
1227 strbuf_init(&buf, 256);
1228
1229 for (r = remote_refs; r; r = r->next) {
1230 if (!r->peer_ref) continue;
1231 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1232 if (r->status == REF_STATUS_REJECT_STALE) continue;
1233 if (r->status == REF_STATUS_REJECT_REMOTE_UPDATED) continue;
1234 if (r->status == REF_STATUS_UPTODATE) continue;
1235
1236 strbuf_reset(&buf);
1237 strbuf_addf( &buf, "%s %s %s %s\n",
1238 r->peer_ref->name, oid_to_hex(&r->new_oid),
1239 r->name, oid_to_hex(&r->old_oid));
1240
1241 if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
1242 /* We do not mind if a hook does not read all refs. */
1243 if (errno != EPIPE)
1244 ret = -1;
1245 break;
1246 }
1247 }
1248
1249 strbuf_release(&buf);
1250
1251 x = close(proc.in);
1252 if (!ret)
1253 ret = x;
1254
1255 sigchain_pop(SIGPIPE);
1256
1257 x = finish_command(&proc);
1258 if (!ret)
1259 ret = x;
1260
1261 return ret;
1262 }
1263
1264 int transport_push(struct repository *r,
1265 struct transport *transport,
1266 struct refspec *rs, int flags,
1267 unsigned int *reject_reasons)
1268 {
1269 *reject_reasons = 0;
1270
1271 if (transport_color_config() < 0)
1272 return -1;
1273
1274 if (transport->vtable->push_refs) {
1275 struct ref *remote_refs;
1276 struct ref *local_refs = get_local_heads();
1277 int match_flags = MATCH_REFS_NONE;
1278 int verbose = (transport->verbose > 0);
1279 int quiet = (transport->verbose < 0);
1280 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1281 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1282 int push_ret, ret, err;
1283 struct transport_ls_refs_options transport_options =
1284 TRANSPORT_LS_REFS_OPTIONS_INIT;
1285
1286 if (check_push_refs(local_refs, rs) < 0)
1287 return -1;
1288
1289 refspec_ref_prefixes(rs, &transport_options.ref_prefixes);
1290
1291 trace2_region_enter("transport_push", "get_refs_list", r);
1292 remote_refs = transport->vtable->get_refs_list(transport, 1,
1293 &transport_options);
1294 trace2_region_leave("transport_push", "get_refs_list", r);
1295
1296 strvec_clear(&transport_options.ref_prefixes);
1297
1298 if (flags & TRANSPORT_PUSH_ALL)
1299 match_flags |= MATCH_REFS_ALL;
1300 if (flags & TRANSPORT_PUSH_MIRROR)
1301 match_flags |= MATCH_REFS_MIRROR;
1302 if (flags & TRANSPORT_PUSH_PRUNE)
1303 match_flags |= MATCH_REFS_PRUNE;
1304 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1305 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1306
1307 if (match_push_refs(local_refs, &remote_refs, rs, match_flags))
1308 return -1;
1309
1310 if (transport->smart_options &&
1311 transport->smart_options->cas &&
1312 !is_empty_cas(transport->smart_options->cas))
1313 apply_push_cas(transport->smart_options->cas,
1314 transport->remote, remote_refs);
1315
1316 set_ref_status_for_push(remote_refs,
1317 flags & TRANSPORT_PUSH_MIRROR,
1318 flags & TRANSPORT_PUSH_FORCE);
1319
1320 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1321 if (run_pre_push_hook(transport, remote_refs))
1322 return -1;
1323
1324 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1325 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1326 !is_bare_repository()) {
1327 struct ref *ref = remote_refs;
1328 struct oid_array commits = OID_ARRAY_INIT;
1329
1330 trace2_region_enter("transport_push", "push_submodules", r);
1331 for (; ref; ref = ref->next)
1332 if (!is_null_oid(&ref->new_oid))
1333 oid_array_append(&commits,
1334 &ref->new_oid);
1335
1336 if (!push_unpushed_submodules(r,
1337 &commits,
1338 transport->remote,
1339 rs,
1340 transport->push_options,
1341 pretend)) {
1342 oid_array_clear(&commits);
1343 trace2_region_leave("transport_push", "push_submodules", r);
1344 die(_("failed to push all needed submodules"));
1345 }
1346 oid_array_clear(&commits);
1347 trace2_region_leave("transport_push", "push_submodules", r);
1348 }
1349
1350 if (((flags & TRANSPORT_RECURSE_SUBMODULES_CHECK) ||
1351 ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1352 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1353 !pretend)) && !is_bare_repository()) {
1354 struct ref *ref = remote_refs;
1355 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1356 struct oid_array commits = OID_ARRAY_INIT;
1357
1358 trace2_region_enter("transport_push", "check_submodules", r);
1359 for (; ref; ref = ref->next)
1360 if (!is_null_oid(&ref->new_oid))
1361 oid_array_append(&commits,
1362 &ref->new_oid);
1363
1364 if (find_unpushed_submodules(r,
1365 &commits,
1366 transport->remote->name,
1367 &needs_pushing)) {
1368 oid_array_clear(&commits);
1369 trace2_region_leave("transport_push", "check_submodules", r);
1370 die_with_unpushed_submodules(&needs_pushing);
1371 }
1372 string_list_clear(&needs_pushing, 0);
1373 oid_array_clear(&commits);
1374 trace2_region_leave("transport_push", "check_submodules", r);
1375 }
1376
1377 if (!(flags & TRANSPORT_RECURSE_SUBMODULES_ONLY)) {
1378 trace2_region_enter("transport_push", "push_refs", r);
1379 push_ret = transport->vtable->push_refs(transport, remote_refs, flags);
1380 trace2_region_leave("transport_push", "push_refs", r);
1381 } else
1382 push_ret = 0;
1383 err = push_had_errors(remote_refs);
1384 ret = push_ret | err;
1385
1386 if (!quiet || err)
1387 transport_print_push_status(transport->url, remote_refs,
1388 verbose | porcelain, porcelain,
1389 reject_reasons);
1390
1391 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1392 set_upstreams(transport, remote_refs, pretend);
1393
1394 if (!(flags & (TRANSPORT_PUSH_DRY_RUN |
1395 TRANSPORT_RECURSE_SUBMODULES_ONLY))) {
1396 struct ref *ref;
1397 for (ref = remote_refs; ref; ref = ref->next)
1398 transport_update_tracking_ref(transport->remote, ref, verbose);
1399 }
1400
1401 if (porcelain && !push_ret)
1402 puts("Done");
1403 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1404 fprintf(stderr, "Everything up-to-date\n");
1405
1406 return ret;
1407 }
1408 return 1;
1409 }
1410
1411 const struct ref *transport_get_remote_refs(struct transport *transport,
1412 struct transport_ls_refs_options *transport_options)
1413 {
1414 if (!transport->got_remote_refs) {
1415 transport->remote_refs =
1416 transport->vtable->get_refs_list(transport, 0,
1417 transport_options);
1418 transport->got_remote_refs = 1;
1419 }
1420
1421 return transport->remote_refs;
1422 }
1423
1424 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1425 {
1426 int rc;
1427 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1428 struct ref **heads = NULL;
1429 struct ref *rm;
1430
1431 for (rm = refs; rm; rm = rm->next) {
1432 nr_refs++;
1433 if (rm->peer_ref &&
1434 !is_null_oid(&rm->old_oid) &&
1435 oideq(&rm->peer_ref->old_oid, &rm->old_oid))
1436 continue;
1437 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1438 heads[nr_heads++] = rm;
1439 }
1440
1441 if (!nr_heads) {
1442 /*
1443 * When deepening of a shallow repository is requested,
1444 * then local and remote refs are likely to still be equal.
1445 * Just feed them all to the fetch method in that case.
1446 * This condition shouldn't be met in a non-deepening fetch
1447 * (see builtin/fetch.c:quickfetch()).
1448 */
1449 ALLOC_ARRAY(heads, nr_refs);
1450 for (rm = refs; rm; rm = rm->next)
1451 heads[nr_heads++] = rm;
1452 }
1453
1454 rc = transport->vtable->fetch(transport, nr_heads, heads);
1455
1456 free(heads);
1457 return rc;
1458 }
1459
1460 void transport_unlock_pack(struct transport *transport)
1461 {
1462 int i;
1463
1464 for (i = 0; i < transport->pack_lockfiles.nr; i++)
1465 unlink_or_warn(transport->pack_lockfiles.items[i].string);
1466 string_list_clear(&transport->pack_lockfiles, 0);
1467 }
1468
1469 int transport_connect(struct transport *transport, const char *name,
1470 const char *exec, int fd[2])
1471 {
1472 if (transport->vtable->connect)
1473 return transport->vtable->connect(transport, name, exec, fd);
1474 else
1475 die(_("operation not supported by protocol"));
1476 }
1477
1478 int transport_disconnect(struct transport *transport)
1479 {
1480 int ret = 0;
1481 if (transport->vtable->disconnect)
1482 ret = transport->vtable->disconnect(transport);
1483 if (transport->got_remote_refs)
1484 free_refs((void *)transport->remote_refs);
1485 free(transport);
1486 return ret;
1487 }
1488
1489 /*
1490 * Strip username (and password) from a URL and return
1491 * it in a newly allocated string.
1492 */
1493 char *transport_anonymize_url(const char *url)
1494 {
1495 char *scheme_prefix, *anon_part;
1496 size_t anon_len, prefix_len = 0;
1497
1498 anon_part = strchr(url, '@');
1499 if (url_is_local_not_ssh(url) || !anon_part)
1500 goto literal_copy;
1501
1502 anon_len = strlen(++anon_part);
1503 scheme_prefix = strstr(url, "://");
1504 if (!scheme_prefix) {
1505 if (!strchr(anon_part, ':'))
1506 /* cannot be "me@there:/path/name" */
1507 goto literal_copy;
1508 } else {
1509 const char *cp;
1510 /* make sure scheme is reasonable */
1511 for (cp = url; cp < scheme_prefix; cp++) {
1512 switch (*cp) {
1513 /* RFC 1738 2.1 */
1514 case '+': case '.': case '-':
1515 break; /* ok */
1516 default:
1517 if (isalnum(*cp))
1518 break;
1519 /* it isn't */
1520 goto literal_copy;
1521 }
1522 }
1523 /* @ past the first slash does not count */
1524 cp = strchr(scheme_prefix + 3, '/');
1525 if (cp && cp < anon_part)
1526 goto literal_copy;
1527 prefix_len = scheme_prefix - url + 3;
1528 }
1529 return xstrfmt("%.*s%.*s", (int)prefix_len, url,
1530 (int)anon_len, anon_part);
1531 literal_copy:
1532 return xstrdup(url);
1533 }
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