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