1#include "cache.h"
2#include "transport.h"
3#include "run-command.h"
4#include "pkt-line.h"
5#include "fetch-pack.h"
6#include "remote.h"
7#include "connect.h"
8#include "send-pack.h"
9#include "walker.h"
10#include "bundle.h"
11#include "dir.h"
12#include "refs.h"
13#include "branch.h"
14#include "url.h"
15#include "submodule.h"
16#include "string-list.h"
17#include "sha1-array.h"
18#include "sigchain.h"
19
20static void set_upstreams(struct transport *transport, struct ref *refs,
21 int pretend)
22{
23 struct ref *ref;
24 for (ref = refs; ref; ref = ref->next) {
25 const char *localname;
26 const char *tmp;
27 const char *remotename;
28 unsigned char sha[20];
29 int flag = 0;
30 /*
31 * Check suitability for tracking. Must be successful /
32 * already up-to-date ref create/modify (not delete).
33 */
34 if (ref->status != REF_STATUS_OK &&
35 ref->status != REF_STATUS_UPTODATE)
36 continue;
37 if (!ref->peer_ref)
38 continue;
39 if (is_null_oid(&ref->new_oid))
40 continue;
41
42 /* Follow symbolic refs (mainly for HEAD). */
43 localname = ref->peer_ref->name;
44 remotename = ref->name;
45 tmp = resolve_ref_unsafe(localname, RESOLVE_REF_READING,
46 sha, &flag);
47 if (tmp && flag & REF_ISSYMREF &&
48 starts_with(tmp, "refs/heads/"))
49 localname = tmp;
50
51 /* Both source and destination must be local branches. */
52 if (!localname || !starts_with(localname, "refs/heads/"))
53 continue;
54 if (!remotename || !starts_with(remotename, "refs/heads/"))
55 continue;
56
57 if (!pretend)
58 install_branch_config(BRANCH_CONFIG_VERBOSE,
59 localname + 11, transport->remote->name,
60 remotename);
61 else
62 printf("Would set upstream of '%s' to '%s' of '%s'\n",
63 localname + 11, remotename + 11,
64 transport->remote->name);
65 }
66}
67
68struct bundle_transport_data {
69 int fd;
70 struct bundle_header header;
71};
72
73static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
74{
75 struct bundle_transport_data *data = transport->data;
76 struct ref *result = NULL;
77 int i;
78
79 if (for_push)
80 return NULL;
81
82 if (data->fd > 0)
83 close(data->fd);
84 data->fd = read_bundle_header(transport->url, &data->header);
85 if (data->fd < 0)
86 die ("Could not read bundle '%s'.", transport->url);
87 for (i = 0; i < data->header.references.nr; i++) {
88 struct ref_list_entry *e = data->header.references.list + i;
89 struct ref *ref = alloc_ref(e->name);
90 hashcpy(ref->old_oid.hash, e->sha1);
91 ref->next = result;
92 result = ref;
93 }
94 return result;
95}
96
97static int fetch_refs_from_bundle(struct transport *transport,
98 int nr_heads, struct ref **to_fetch)
99{
100 struct bundle_transport_data *data = transport->data;
101 return unbundle(&data->header, data->fd,
102 transport->progress ? BUNDLE_VERBOSE : 0);
103}
104
105static int close_bundle(struct transport *transport)
106{
107 struct bundle_transport_data *data = transport->data;
108 if (data->fd > 0)
109 close(data->fd);
110 free(data);
111 return 0;
112}
113
114struct git_transport_data {
115 struct git_transport_options options;
116 struct child_process *conn;
117 int fd[2];
118 unsigned got_remote_heads : 1;
119 struct sha1_array extra_have;
120 struct sha1_array shallow;
121};
122
123static int set_git_option(struct git_transport_options *opts,
124 const char *name, const char *value)
125{
126 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
127 opts->uploadpack = value;
128 return 0;
129 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
130 opts->receivepack = value;
131 return 0;
132 } else if (!strcmp(name, TRANS_OPT_THIN)) {
133 opts->thin = !!value;
134 return 0;
135 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
136 opts->followtags = !!value;
137 return 0;
138 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
139 opts->keep = !!value;
140 return 0;
141 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
142 opts->update_shallow = !!value;
143 return 0;
144 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
145 if (!value)
146 opts->depth = 0;
147 else {
148 char *end;
149 opts->depth = strtol(value, &end, 0);
150 if (*end)
151 die("transport: invalid depth option '%s'", value);
152 }
153 return 0;
154 }
155 return 1;
156}
157
158static int connect_setup(struct transport *transport, int for_push)
159{
160 struct git_transport_data *data = transport->data;
161 int flags = transport->verbose > 0 ? CONNECT_VERBOSE : 0;
162
163 if (data->conn)
164 return 0;
165
166 switch (transport->family) {
167 case TRANSPORT_FAMILY_ALL: break;
168 case TRANSPORT_FAMILY_IPV4: flags |= CONNECT_IPV4; break;
169 case TRANSPORT_FAMILY_IPV6: flags |= CONNECT_IPV6; break;
170 }
171
172 data->conn = git_connect(data->fd, transport->url,
173 for_push ? data->options.receivepack :
174 data->options.uploadpack,
175 flags);
176
177 return 0;
178}
179
180static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
181{
182 struct git_transport_data *data = transport->data;
183 struct ref *refs;
184
185 connect_setup(transport, for_push);
186 get_remote_heads(data->fd[0], NULL, 0, &refs,
187 for_push ? REF_NORMAL : 0,
188 &data->extra_have,
189 &data->shallow);
190 data->got_remote_heads = 1;
191
192 return refs;
193}
194
195static int fetch_refs_via_pack(struct transport *transport,
196 int nr_heads, struct ref **to_fetch)
197{
198 struct git_transport_data *data = transport->data;
199 struct ref *refs;
200 char *dest = xstrdup(transport->url);
201 struct fetch_pack_args args;
202 struct ref *refs_tmp = NULL;
203
204 memset(&args, 0, sizeof(args));
205 args.uploadpack = data->options.uploadpack;
206 args.keep_pack = data->options.keep;
207 args.lock_pack = 1;
208 args.use_thin_pack = data->options.thin;
209 args.include_tag = data->options.followtags;
210 args.verbose = (transport->verbose > 1);
211 args.quiet = (transport->verbose < 0);
212 args.no_progress = !transport->progress;
213 args.depth = data->options.depth;
214 args.check_self_contained_and_connected =
215 data->options.check_self_contained_and_connected;
216 args.cloning = transport->cloning;
217 args.update_shallow = data->options.update_shallow;
218
219 if (!data->got_remote_heads) {
220 connect_setup(transport, 0);
221 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
222 NULL, &data->shallow);
223 data->got_remote_heads = 1;
224 }
225
226 refs = fetch_pack(&args, data->fd, data->conn,
227 refs_tmp ? refs_tmp : transport->remote_refs,
228 dest, to_fetch, nr_heads, &data->shallow,
229 &transport->pack_lockfile);
230 close(data->fd[0]);
231 close(data->fd[1]);
232 if (finish_connect(data->conn)) {
233 free_refs(refs);
234 refs = NULL;
235 }
236 data->conn = NULL;
237 data->got_remote_heads = 0;
238 data->options.self_contained_and_connected =
239 args.self_contained_and_connected;
240
241 free_refs(refs_tmp);
242 free_refs(refs);
243 free(dest);
244 return (refs ? 0 : -1);
245}
246
247static int push_had_errors(struct ref *ref)
248{
249 for (; ref; ref = ref->next) {
250 switch (ref->status) {
251 case REF_STATUS_NONE:
252 case REF_STATUS_UPTODATE:
253 case REF_STATUS_OK:
254 break;
255 default:
256 return 1;
257 }
258 }
259 return 0;
260}
261
262int transport_refs_pushed(struct ref *ref)
263{
264 for (; ref; ref = ref->next) {
265 switch(ref->status) {
266 case REF_STATUS_NONE:
267 case REF_STATUS_UPTODATE:
268 break;
269 default:
270 return 1;
271 }
272 }
273 return 0;
274}
275
276void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
277{
278 struct refspec rs;
279
280 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
281 return;
282
283 rs.src = ref->name;
284 rs.dst = NULL;
285
286 if (!remote_find_tracking(remote, &rs)) {
287 if (verbose)
288 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
289 if (ref->deletion) {
290 delete_ref(rs.dst, NULL, 0);
291 } else
292 update_ref("update by push", rs.dst,
293 ref->new_oid.hash, NULL, 0, 0);
294 free(rs.dst);
295 }
296}
297
298static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
299{
300 if (porcelain) {
301 if (from)
302 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
303 else
304 fprintf(stdout, "%c\t:%s\t", flag, to->name);
305 if (msg)
306 fprintf(stdout, "%s (%s)\n", summary, msg);
307 else
308 fprintf(stdout, "%s\n", summary);
309 } else {
310 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
311 if (from)
312 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
313 else
314 fputs(prettify_refname(to->name), stderr);
315 if (msg) {
316 fputs(" (", stderr);
317 fputs(msg, stderr);
318 fputc(')', stderr);
319 }
320 fputc('\n', stderr);
321 }
322}
323
324static void print_ok_ref_status(struct ref *ref, int porcelain)
325{
326 if (ref->deletion)
327 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
328 else if (is_null_oid(&ref->old_oid))
329 print_ref_status('*',
330 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
331 "[new branch]"),
332 ref, ref->peer_ref, NULL, porcelain);
333 else {
334 struct strbuf quickref = STRBUF_INIT;
335 char type;
336 const char *msg;
337
338 strbuf_add_unique_abbrev(&quickref, ref->old_oid.hash,
339 DEFAULT_ABBREV);
340 if (ref->forced_update) {
341 strbuf_addstr(&quickref, "...");
342 type = '+';
343 msg = "forced update";
344 } else {
345 strbuf_addstr(&quickref, "..");
346 type = ' ';
347 msg = NULL;
348 }
349 strbuf_add_unique_abbrev(&quickref, ref->new_oid.hash,
350 DEFAULT_ABBREV);
351
352 print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg, porcelain);
353 strbuf_release(&quickref);
354 }
355}
356
357static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
358{
359 if (!count)
360 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
361
362 switch(ref->status) {
363 case REF_STATUS_NONE:
364 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
365 break;
366 case REF_STATUS_REJECT_NODELETE:
367 print_ref_status('!', "[rejected]", ref, NULL,
368 "remote does not support deleting refs", porcelain);
369 break;
370 case REF_STATUS_UPTODATE:
371 print_ref_status('=', "[up to date]", ref,
372 ref->peer_ref, NULL, porcelain);
373 break;
374 case REF_STATUS_REJECT_NONFASTFORWARD:
375 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
376 "non-fast-forward", porcelain);
377 break;
378 case REF_STATUS_REJECT_ALREADY_EXISTS:
379 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
380 "already exists", porcelain);
381 break;
382 case REF_STATUS_REJECT_FETCH_FIRST:
383 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
384 "fetch first", porcelain);
385 break;
386 case REF_STATUS_REJECT_NEEDS_FORCE:
387 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
388 "needs force", porcelain);
389 break;
390 case REF_STATUS_REJECT_STALE:
391 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
392 "stale info", porcelain);
393 break;
394 case REF_STATUS_REJECT_SHALLOW:
395 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
396 "new shallow roots not allowed", porcelain);
397 break;
398 case REF_STATUS_REMOTE_REJECT:
399 print_ref_status('!', "[remote rejected]", ref,
400 ref->deletion ? NULL : ref->peer_ref,
401 ref->remote_status, porcelain);
402 break;
403 case REF_STATUS_EXPECTING_REPORT:
404 print_ref_status('!', "[remote failure]", ref,
405 ref->deletion ? NULL : ref->peer_ref,
406 "remote failed to report status", porcelain);
407 break;
408 case REF_STATUS_ATOMIC_PUSH_FAILED:
409 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
410 "atomic push failed", porcelain);
411 break;
412 case REF_STATUS_OK:
413 print_ok_ref_status(ref, porcelain);
414 break;
415 }
416
417 return 1;
418}
419
420void transport_print_push_status(const char *dest, struct ref *refs,
421 int verbose, int porcelain, unsigned int *reject_reasons)
422{
423 struct ref *ref;
424 int n = 0;
425 unsigned char head_sha1[20];
426 char *head;
427
428 head = resolve_refdup("HEAD", RESOLVE_REF_READING, head_sha1, NULL);
429
430 if (verbose) {
431 for (ref = refs; ref; ref = ref->next)
432 if (ref->status == REF_STATUS_UPTODATE)
433 n += print_one_push_status(ref, dest, n, porcelain);
434 }
435
436 for (ref = refs; ref; ref = ref->next)
437 if (ref->status == REF_STATUS_OK)
438 n += print_one_push_status(ref, dest, n, porcelain);
439
440 *reject_reasons = 0;
441 for (ref = refs; ref; ref = ref->next) {
442 if (ref->status != REF_STATUS_NONE &&
443 ref->status != REF_STATUS_UPTODATE &&
444 ref->status != REF_STATUS_OK)
445 n += print_one_push_status(ref, dest, n, porcelain);
446 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
447 if (head != NULL && !strcmp(head, ref->name))
448 *reject_reasons |= REJECT_NON_FF_HEAD;
449 else
450 *reject_reasons |= REJECT_NON_FF_OTHER;
451 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
452 *reject_reasons |= REJECT_ALREADY_EXISTS;
453 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
454 *reject_reasons |= REJECT_FETCH_FIRST;
455 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
456 *reject_reasons |= REJECT_NEEDS_FORCE;
457 }
458 }
459 free(head);
460}
461
462void transport_verify_remote_names(int nr_heads, const char **heads)
463{
464 int i;
465
466 for (i = 0; i < nr_heads; i++) {
467 const char *local = heads[i];
468 const char *remote = strrchr(heads[i], ':');
469
470 if (*local == '+')
471 local++;
472
473 /* A matching refspec is okay. */
474 if (remote == local && remote[1] == '\0')
475 continue;
476
477 remote = remote ? (remote + 1) : local;
478 if (check_refname_format(remote,
479 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
480 die("remote part of refspec is not a valid name in %s",
481 heads[i]);
482 }
483}
484
485static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
486{
487 struct git_transport_data *data = transport->data;
488 struct send_pack_args args;
489 int ret;
490
491 if (!data->got_remote_heads) {
492 struct ref *tmp_refs;
493 connect_setup(transport, 1);
494
495 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
496 NULL, &data->shallow);
497 data->got_remote_heads = 1;
498 }
499
500 memset(&args, 0, sizeof(args));
501 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
502 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
503 args.use_thin_pack = data->options.thin;
504 args.verbose = (transport->verbose > 0);
505 args.quiet = (transport->verbose < 0);
506 args.progress = transport->progress;
507 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
508 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
509 args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
510 args.url = transport->url;
511
512 if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
513 args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
514 else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
515 args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
516 else
517 args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
518
519 ret = send_pack(&args, data->fd, data->conn, remote_refs,
520 &data->extra_have);
521
522 close(data->fd[1]);
523 close(data->fd[0]);
524 ret |= finish_connect(data->conn);
525 data->conn = NULL;
526 data->got_remote_heads = 0;
527
528 return ret;
529}
530
531static int connect_git(struct transport *transport, const char *name,
532 const char *executable, int fd[2])
533{
534 struct git_transport_data *data = transport->data;
535 data->conn = git_connect(data->fd, transport->url,
536 executable, 0);
537 fd[0] = data->fd[0];
538 fd[1] = data->fd[1];
539 return 0;
540}
541
542static int disconnect_git(struct transport *transport)
543{
544 struct git_transport_data *data = transport->data;
545 if (data->conn) {
546 if (data->got_remote_heads)
547 packet_flush(data->fd[1]);
548 close(data->fd[0]);
549 close(data->fd[1]);
550 finish_connect(data->conn);
551 }
552
553 free(data);
554 return 0;
555}
556
557void transport_take_over(struct transport *transport,
558 struct child_process *child)
559{
560 struct git_transport_data *data;
561
562 if (!transport->smart_options)
563 die("Bug detected: Taking over transport requires non-NULL "
564 "smart_options field.");
565
566 data = xcalloc(1, sizeof(*data));
567 data->options = *transport->smart_options;
568 data->conn = child;
569 data->fd[0] = data->conn->out;
570 data->fd[1] = data->conn->in;
571 data->got_remote_heads = 0;
572 transport->data = data;
573
574 transport->set_option = NULL;
575 transport->get_refs_list = get_refs_via_connect;
576 transport->fetch = fetch_refs_via_pack;
577 transport->push = NULL;
578 transport->push_refs = git_transport_push;
579 transport->disconnect = disconnect_git;
580 transport->smart_options = &(data->options);
581
582 transport->cannot_reuse = 1;
583}
584
585static int is_file(const char *url)
586{
587 struct stat buf;
588 if (stat(url, &buf))
589 return 0;
590 return S_ISREG(buf.st_mode);
591}
592
593static int external_specification_len(const char *url)
594{
595 return strchr(url, ':') - url;
596}
597
598static const struct string_list *protocol_whitelist(void)
599{
600 static int enabled = -1;
601 static struct string_list allowed = STRING_LIST_INIT_DUP;
602
603 if (enabled < 0) {
604 const char *v = getenv("GIT_ALLOW_PROTOCOL");
605 if (v) {
606 string_list_split(&allowed, v, ':', -1);
607 string_list_sort(&allowed);
608 enabled = 1;
609 } else {
610 enabled = 0;
611 }
612 }
613
614 return enabled ? &allowed : NULL;
615}
616
617int is_transport_allowed(const char *type)
618{
619 const struct string_list *allowed = protocol_whitelist();
620 return !allowed || string_list_has_string(allowed, type);
621}
622
623void transport_check_allowed(const char *type)
624{
625 if (!is_transport_allowed(type))
626 die("transport '%s' not allowed", type);
627}
628
629int transport_restrict_protocols(void)
630{
631 return !!protocol_whitelist();
632}
633
634struct transport *transport_get(struct remote *remote, const char *url)
635{
636 const char *helper;
637 struct transport *ret = xcalloc(1, sizeof(*ret));
638
639 ret->progress = isatty(2);
640
641 if (!remote)
642 die("No remote provided to transport_get()");
643
644 ret->got_remote_refs = 0;
645 ret->remote = remote;
646 helper = remote->foreign_vcs;
647
648 if (!url && remote->url)
649 url = remote->url[0];
650 ret->url = url;
651
652 /* maybe it is a foreign URL? */
653 if (url) {
654 const char *p = url;
655
656 while (is_urlschemechar(p == url, *p))
657 p++;
658 if (starts_with(p, "::"))
659 helper = xstrndup(url, p - url);
660 }
661
662 if (helper) {
663 transport_helper_init(ret, helper);
664 } else if (starts_with(url, "rsync:")) {
665 die("git-over-rsync is no longer supported");
666 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
667 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
668 transport_check_allowed("file");
669 ret->data = data;
670 ret->get_refs_list = get_refs_from_bundle;
671 ret->fetch = fetch_refs_from_bundle;
672 ret->disconnect = close_bundle;
673 ret->smart_options = NULL;
674 } else if (!is_url(url)
675 || starts_with(url, "file://")
676 || starts_with(url, "git://")
677 || starts_with(url, "ssh://")
678 || starts_with(url, "git+ssh://") /* deprecated - do not use */
679 || starts_with(url, "ssh+git://") /* deprecated - do not use */
680 ) {
681 /*
682 * These are builtin smart transports; "allowed" transports
683 * will be checked individually in git_connect.
684 */
685 struct git_transport_data *data = xcalloc(1, sizeof(*data));
686 ret->data = data;
687 ret->set_option = NULL;
688 ret->get_refs_list = get_refs_via_connect;
689 ret->fetch = fetch_refs_via_pack;
690 ret->push_refs = git_transport_push;
691 ret->connect = connect_git;
692 ret->disconnect = disconnect_git;
693 ret->smart_options = &(data->options);
694
695 data->conn = NULL;
696 data->got_remote_heads = 0;
697 } else {
698 /* Unknown protocol in URL. Pass to external handler. */
699 int len = external_specification_len(url);
700 char *handler = xmemdupz(url, len);
701 transport_helper_init(ret, handler);
702 }
703
704 if (ret->smart_options) {
705 ret->smart_options->thin = 1;
706 ret->smart_options->uploadpack = "git-upload-pack";
707 if (remote->uploadpack)
708 ret->smart_options->uploadpack = remote->uploadpack;
709 ret->smart_options->receivepack = "git-receive-pack";
710 if (remote->receivepack)
711 ret->smart_options->receivepack = remote->receivepack;
712 }
713
714 return ret;
715}
716
717int transport_set_option(struct transport *transport,
718 const char *name, const char *value)
719{
720 int git_reports = 1, protocol_reports = 1;
721
722 if (transport->smart_options)
723 git_reports = set_git_option(transport->smart_options,
724 name, value);
725
726 if (transport->set_option)
727 protocol_reports = transport->set_option(transport, name,
728 value);
729
730 /* If either report is 0, report 0 (success). */
731 if (!git_reports || !protocol_reports)
732 return 0;
733 /* If either reports -1 (invalid value), report -1. */
734 if ((git_reports == -1) || (protocol_reports == -1))
735 return -1;
736 /* Otherwise if both report unknown, report unknown. */
737 return 1;
738}
739
740void transport_set_verbosity(struct transport *transport, int verbosity,
741 int force_progress)
742{
743 if (verbosity >= 1)
744 transport->verbose = verbosity <= 3 ? verbosity : 3;
745 if (verbosity < 0)
746 transport->verbose = -1;
747
748 /**
749 * Rules used to determine whether to report progress (processing aborts
750 * when a rule is satisfied):
751 *
752 * . Report progress, if force_progress is 1 (ie. --progress).
753 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
754 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
755 * . Report progress if isatty(2) is 1.
756 **/
757 if (force_progress >= 0)
758 transport->progress = !!force_progress;
759 else
760 transport->progress = verbosity >= 0 && isatty(2);
761}
762
763static void die_with_unpushed_submodules(struct string_list *needs_pushing)
764{
765 int i;
766
767 fprintf(stderr, "The following submodule paths contain changes that can\n"
768 "not be found on any remote:\n");
769 for (i = 0; i < needs_pushing->nr; i++)
770 printf(" %s\n", needs_pushing->items[i].string);
771 fprintf(stderr, "\nPlease try\n\n"
772 " git push --recurse-submodules=on-demand\n\n"
773 "or cd to the path and use\n\n"
774 " git push\n\n"
775 "to push them to a remote.\n\n");
776
777 string_list_clear(needs_pushing, 0);
778
779 die("Aborting.");
780}
781
782static int run_pre_push_hook(struct transport *transport,
783 struct ref *remote_refs)
784{
785 int ret = 0, x;
786 struct ref *r;
787 struct child_process proc = CHILD_PROCESS_INIT;
788 struct strbuf buf;
789 const char *argv[4];
790
791 if (!(argv[0] = find_hook("pre-push")))
792 return 0;
793
794 argv[1] = transport->remote->name;
795 argv[2] = transport->url;
796 argv[3] = NULL;
797
798 proc.argv = argv;
799 proc.in = -1;
800
801 if (start_command(&proc)) {
802 finish_command(&proc);
803 return -1;
804 }
805
806 sigchain_push(SIGPIPE, SIG_IGN);
807
808 strbuf_init(&buf, 256);
809
810 for (r = remote_refs; r; r = r->next) {
811 if (!r->peer_ref) continue;
812 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
813 if (r->status == REF_STATUS_REJECT_STALE) continue;
814 if (r->status == REF_STATUS_UPTODATE) continue;
815
816 strbuf_reset(&buf);
817 strbuf_addf( &buf, "%s %s %s %s\n",
818 r->peer_ref->name, oid_to_hex(&r->new_oid),
819 r->name, oid_to_hex(&r->old_oid));
820
821 if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
822 /* We do not mind if a hook does not read all refs. */
823 if (errno != EPIPE)
824 ret = -1;
825 break;
826 }
827 }
828
829 strbuf_release(&buf);
830
831 x = close(proc.in);
832 if (!ret)
833 ret = x;
834
835 sigchain_pop(SIGPIPE);
836
837 x = finish_command(&proc);
838 if (!ret)
839 ret = x;
840
841 return ret;
842}
843
844int transport_push(struct transport *transport,
845 int refspec_nr, const char **refspec, int flags,
846 unsigned int *reject_reasons)
847{
848 *reject_reasons = 0;
849 transport_verify_remote_names(refspec_nr, refspec);
850
851 if (transport->push) {
852 /* Maybe FIXME. But no important transport uses this case. */
853 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
854 die("This transport does not support using --set-upstream");
855
856 return transport->push(transport, refspec_nr, refspec, flags);
857 } else if (transport->push_refs) {
858 struct ref *remote_refs;
859 struct ref *local_refs = get_local_heads();
860 int match_flags = MATCH_REFS_NONE;
861 int verbose = (transport->verbose > 0);
862 int quiet = (transport->verbose < 0);
863 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
864 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
865 int push_ret, ret, err;
866
867 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
868 return -1;
869
870 remote_refs = transport->get_refs_list(transport, 1);
871
872 if (flags & TRANSPORT_PUSH_ALL)
873 match_flags |= MATCH_REFS_ALL;
874 if (flags & TRANSPORT_PUSH_MIRROR)
875 match_flags |= MATCH_REFS_MIRROR;
876 if (flags & TRANSPORT_PUSH_PRUNE)
877 match_flags |= MATCH_REFS_PRUNE;
878 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
879 match_flags |= MATCH_REFS_FOLLOW_TAGS;
880
881 if (match_push_refs(local_refs, &remote_refs,
882 refspec_nr, refspec, match_flags)) {
883 return -1;
884 }
885
886 if (transport->smart_options &&
887 transport->smart_options->cas &&
888 !is_empty_cas(transport->smart_options->cas))
889 apply_push_cas(transport->smart_options->cas,
890 transport->remote, remote_refs);
891
892 set_ref_status_for_push(remote_refs,
893 flags & TRANSPORT_PUSH_MIRROR,
894 flags & TRANSPORT_PUSH_FORCE);
895
896 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
897 if (run_pre_push_hook(transport, remote_refs))
898 return -1;
899
900 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
901 struct ref *ref = remote_refs;
902 for (; ref; ref = ref->next)
903 if (!is_null_oid(&ref->new_oid) &&
904 !push_unpushed_submodules(ref->new_oid.hash,
905 transport->remote->name))
906 die ("Failed to push all needed submodules!");
907 }
908
909 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
910 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
911 struct ref *ref = remote_refs;
912 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
913
914 for (; ref; ref = ref->next)
915 if (!is_null_oid(&ref->new_oid) &&
916 find_unpushed_submodules(ref->new_oid.hash,
917 transport->remote->name, &needs_pushing))
918 die_with_unpushed_submodules(&needs_pushing);
919 }
920
921 push_ret = transport->push_refs(transport, remote_refs, flags);
922 err = push_had_errors(remote_refs);
923 ret = push_ret | err;
924
925 if (!quiet || err)
926 transport_print_push_status(transport->url, remote_refs,
927 verbose | porcelain, porcelain,
928 reject_reasons);
929
930 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
931 set_upstreams(transport, remote_refs, pretend);
932
933 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
934 struct ref *ref;
935 for (ref = remote_refs; ref; ref = ref->next)
936 transport_update_tracking_ref(transport->remote, ref, verbose);
937 }
938
939 if (porcelain && !push_ret)
940 puts("Done");
941 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
942 fprintf(stderr, "Everything up-to-date\n");
943
944 return ret;
945 }
946 return 1;
947}
948
949const struct ref *transport_get_remote_refs(struct transport *transport)
950{
951 if (!transport->got_remote_refs) {
952 transport->remote_refs = transport->get_refs_list(transport, 0);
953 transport->got_remote_refs = 1;
954 }
955
956 return transport->remote_refs;
957}
958
959int transport_fetch_refs(struct transport *transport, struct ref *refs)
960{
961 int rc;
962 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
963 struct ref **heads = NULL;
964 struct ref *rm;
965
966 for (rm = refs; rm; rm = rm->next) {
967 nr_refs++;
968 if (rm->peer_ref &&
969 !is_null_oid(&rm->old_oid) &&
970 !oidcmp(&rm->peer_ref->old_oid, &rm->old_oid))
971 continue;
972 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
973 heads[nr_heads++] = rm;
974 }
975
976 if (!nr_heads) {
977 /*
978 * When deepening of a shallow repository is requested,
979 * then local and remote refs are likely to still be equal.
980 * Just feed them all to the fetch method in that case.
981 * This condition shouldn't be met in a non-deepening fetch
982 * (see builtin/fetch.c:quickfetch()).
983 */
984 ALLOC_ARRAY(heads, nr_refs);
985 for (rm = refs; rm; rm = rm->next)
986 heads[nr_heads++] = rm;
987 }
988
989 rc = transport->fetch(transport, nr_heads, heads);
990
991 free(heads);
992 return rc;
993}
994
995void transport_unlock_pack(struct transport *transport)
996{
997 if (transport->pack_lockfile) {
998 unlink_or_warn(transport->pack_lockfile);
999 free(transport->pack_lockfile);
1000 transport->pack_lockfile = NULL;
1001 }
1002}
1003
1004int transport_connect(struct transport *transport, const char *name,
1005 const char *exec, int fd[2])
1006{
1007 if (transport->connect)
1008 return transport->connect(transport, name, exec, fd);
1009 else
1010 die("Operation not supported by protocol");
1011}
1012
1013int transport_disconnect(struct transport *transport)
1014{
1015 int ret = 0;
1016 if (transport->disconnect)
1017 ret = transport->disconnect(transport);
1018 free(transport);
1019 return ret;
1020}
1021
1022/*
1023 * Strip username (and password) from a URL and return
1024 * it in a newly allocated string.
1025 */
1026char *transport_anonymize_url(const char *url)
1027{
1028 char *scheme_prefix, *anon_part;
1029 size_t anon_len, prefix_len = 0;
1030
1031 anon_part = strchr(url, '@');
1032 if (url_is_local_not_ssh(url) || !anon_part)
1033 goto literal_copy;
1034
1035 anon_len = strlen(++anon_part);
1036 scheme_prefix = strstr(url, "://");
1037 if (!scheme_prefix) {
1038 if (!strchr(anon_part, ':'))
1039 /* cannot be "me@there:/path/name" */
1040 goto literal_copy;
1041 } else {
1042 const char *cp;
1043 /* make sure scheme is reasonable */
1044 for (cp = url; cp < scheme_prefix; cp++) {
1045 switch (*cp) {
1046 /* RFC 1738 2.1 */
1047 case '+': case '.': case '-':
1048 break; /* ok */
1049 default:
1050 if (isalnum(*cp))
1051 break;
1052 /* it isn't */
1053 goto literal_copy;
1054 }
1055 }
1056 /* @ past the first slash does not count */
1057 cp = strchr(scheme_prefix + 3, '/');
1058 if (cp && cp < anon_part)
1059 goto literal_copy;
1060 prefix_len = scheme_prefix - url + 3;
1061 }
1062 return xstrfmt("%.*s%.*s", (int)prefix_len, url,
1063 (int)anon_len, anon_part);
1064literal_copy:
1065 return xstrdup(url);
1066}
1067
1068struct alternate_refs_data {
1069 alternate_ref_fn *fn;
1070 void *data;
1071};
1072
1073static int refs_from_alternate_cb(struct alternate_object_database *e,
1074 void *data)
1075{
1076 char *other;
1077 size_t len;
1078 struct remote *remote;
1079 struct transport *transport;
1080 const struct ref *extra;
1081 struct alternate_refs_data *cb = data;
1082
1083 e->name[-1] = '\0';
1084 other = xstrdup(real_path(e->base));
1085 e->name[-1] = '/';
1086 len = strlen(other);
1087
1088 while (other[len-1] == '/')
1089 other[--len] = '\0';
1090 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1091 goto out;
1092 /* Is this a git repository with refs? */
1093 memcpy(other + len - 8, "/refs", 6);
1094 if (!is_directory(other))
1095 goto out;
1096 other[len - 8] = '\0';
1097 remote = remote_get(other);
1098 transport = transport_get(remote, other);
1099 for (extra = transport_get_remote_refs(transport);
1100 extra;
1101 extra = extra->next)
1102 cb->fn(extra, cb->data);
1103 transport_disconnect(transport);
1104out:
1105 free(other);
1106 return 0;
1107}
1108
1109void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1110{
1111 struct alternate_refs_data cb;
1112 cb.fn = fn;
1113 cb.data = data;
1114 foreach_alt_odb(refs_from_alternate_cb, &cb);
1115}