1/*
2 * "git push"
3 */
4#include "cache.h"
5#include "config.h"
6#include "refs.h"
7#include "refspec.h"
8#include "run-command.h"
9#include "builtin.h"
10#include "remote.h"
11#include "transport.h"
12#include "parse-options.h"
13#include "submodule.h"
14#include "submodule-config.h"
15#include "send-pack.h"
16#include "color.h"
17static const char * const push_usage[] = {
19 N_("git push [<options>] [<repository> [<refspec>...]]"),
20 NULL,
21};
22static int push_use_color = -1;
24static char push_colors[][COLOR_MAXLEN] = {
25 GIT_COLOR_RESET,
26 GIT_COLOR_RED, /* ERROR */
27};
28enum color_push {
30 PUSH_COLOR_RESET = 0,
31 PUSH_COLOR_ERROR = 1
32};
33static int parse_push_color_slot(const char *slot)
35{
36 if (!strcasecmp(slot, "reset"))
37 return PUSH_COLOR_RESET;
38 if (!strcasecmp(slot, "error"))
39 return PUSH_COLOR_ERROR;
40 return -1;
41}
42static const char *push_get_color(enum color_push ix)
44{
45 if (want_color_stderr(push_use_color))
46 return push_colors[ix];
47 return "";
48}
49static int thin = 1;
51static int deleterefs;
52static const char *receivepack;
53static int verbosity;
54static int progress = -1;
55static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
56static enum transport_family family;
57static struct push_cas_option cas;
59static struct refspec rs = REFSPEC_INIT_PUSH;
61static struct string_list push_options_config = STRING_LIST_INIT_DUP;
63static const char *map_refspec(const char *ref,
65 struct remote *remote, struct ref *local_refs)
66{
67 struct ref *matched = NULL;
68 /* Does "ref" uniquely name our ref? */
70 if (count_refspec_match(ref, local_refs, &matched) != 1)
71 return ref;
72 if (remote->push.nr) {
74 struct refspec_item query;
75 memset(&query, 0, sizeof(struct refspec_item));
76 query.src = matched->name;
77 if (!query_refspecs(&remote->push, &query) && query.dst) {
78 struct strbuf buf = STRBUF_INIT;
79 strbuf_addf(&buf, "%s%s:%s",
80 query.force ? "+" : "",
81 query.src, query.dst);
82 return strbuf_detach(&buf, NULL);
83 }
84 }
85 if (push_default == PUSH_DEFAULT_UPSTREAM &&
87 starts_with(matched->name, "refs/heads/")) {
88 struct branch *branch = branch_get(matched->name + 11);
89 if (branch->merge_nr == 1 && branch->merge[0]->src) {
90 struct strbuf buf = STRBUF_INIT;
91 strbuf_addf(&buf, "%s:%s",
92 ref, branch->merge[0]->src);
93 return strbuf_detach(&buf, NULL);
94 }
95 }
96 return ref;
98}
99static void set_refspecs(const char **refs, int nr, const char *repo)
101{
102 struct remote *remote = NULL;
103 struct ref *local_refs = NULL;
104 int i;
105 for (i = 0; i < nr; i++) {
107 const char *ref = refs[i];
108 if (!strcmp("tag", ref)) {
109 struct strbuf tagref = STRBUF_INIT;
110 if (nr <= ++i)
111 die(_("tag shorthand without <tag>"));
112 ref = refs[i];
113 if (deleterefs)
114 strbuf_addf(&tagref, ":refs/tags/%s", ref);
115 else
116 strbuf_addf(&tagref, "refs/tags/%s", ref);
117 ref = strbuf_detach(&tagref, NULL);
118 } else if (deleterefs) {
119 struct strbuf delref = STRBUF_INIT;
120 if (strchr(ref, ':'))
121 die(_("--delete only accepts plain target ref names"));
122 strbuf_addf(&delref, ":%s", ref);
123 ref = strbuf_detach(&delref, NULL);
124 } else if (!strchr(ref, ':')) {
125 if (!remote) {
126 /* lazily grab remote and local_refs */
127 remote = remote_get(repo);
128 local_refs = get_local_heads();
129 }
130 ref = map_refspec(ref, remote, local_refs);
131 }
132 refspec_append(&rs, ref);
133 }
134}
135static int push_url_of_remote(struct remote *remote, const char ***url_p)
137{
138 if (remote->pushurl_nr) {
139 *url_p = remote->pushurl;
140 return remote->pushurl_nr;
141 }
142 *url_p = remote->url;
143 return remote->url_nr;
144}
145static NORETURN int die_push_simple(struct branch *branch, struct remote *remote) {
147 /*
148 * There's no point in using shorten_unambiguous_ref here,
149 * as the ambiguity would be on the remote side, not what
150 * we have locally. Plus, this is supposed to be the simple
151 * mode. If the user is doing something crazy like setting
152 * upstream to a non-branch, we should probably be showing
153 * them the big ugly fully qualified ref.
154 */
155 const char *advice_maybe = "";
156 const char *short_upstream = branch->merge[0]->src;
157 skip_prefix(short_upstream, "refs/heads/", &short_upstream);
159 /*
161 * Don't show advice for people who explicitly set
162 * push.default.
163 */
164 if (push_default == PUSH_DEFAULT_UNSPECIFIED)
165 advice_maybe = _("\n"
166 "To choose either option permanently, "
167 "see push.default in 'git help config'.");
168 die(_("The upstream branch of your current branch does not match\n"
169 "the name of your current branch. To push to the upstream branch\n"
170 "on the remote, use\n"
171 "\n"
172 " git push %s HEAD:%s\n"
173 "\n"
174 "To push to the branch of the same name on the remote, use\n"
175 "\n"
176 " git push %s %s\n"
177 "%s"),
178 remote->name, short_upstream,
179 remote->name, branch->name, advice_maybe);
180}
181static const char message_detached_head_die[] =
183 N_("You are not currently on a branch.\n"
184 "To push the history leading to the current (detached HEAD)\n"
185 "state now, use\n"
186 "\n"
187 " git push %s HEAD:<name-of-remote-branch>\n");
188static void setup_push_upstream(struct remote *remote, struct branch *branch,
190 int triangular, int simple)
191{
192 struct strbuf refspec = STRBUF_INIT;
193 if (!branch)
195 die(_(message_detached_head_die), remote->name);
196 if (!branch->merge_nr || !branch->merge || !branch->remote_name)
197 die(_("The current branch %s has no upstream branch.\n"
198 "To push the current branch and set the remote as upstream, use\n"
199 "\n"
200 " git push --set-upstream %s %s\n"),
201 branch->name,
202 remote->name,
203 branch->name);
204 if (branch->merge_nr != 1)
205 die(_("The current branch %s has multiple upstream branches, "
206 "refusing to push."), branch->name);
207 if (triangular)
208 die(_("You are pushing to remote '%s', which is not the upstream of\n"
209 "your current branch '%s', without telling me what to push\n"
210 "to update which remote branch."),
211 remote->name, branch->name);
212 if (simple) {
214 /* Additional safety */
215 if (strcmp(branch->refname, branch->merge[0]->src))
216 die_push_simple(branch, remote);
217 }
218 strbuf_addf(&refspec, "%s:%s", branch->refname, branch->merge[0]->src);
220 refspec_append(&rs, refspec.buf);
221}
222static void setup_push_current(struct remote *remote, struct branch *branch)
224{
225 struct strbuf refspec = STRBUF_INIT;
226 if (!branch)
228 die(_(message_detached_head_die), remote->name);
229 strbuf_addf(&refspec, "%s:%s", branch->refname, branch->refname);
230 refspec_append(&rs, refspec.buf);
231}
232static int is_workflow_triangular(struct remote *remote)
234{
235 struct remote *fetch_remote = remote_get(NULL);
236 return (fetch_remote && fetch_remote != remote);
237}
238static void setup_default_push_refspecs(struct remote *remote)
240{
241 struct branch *branch = branch_get(NULL);
242 int triangular = is_workflow_triangular(remote);
243 switch (push_default) {
245 default:
246 case PUSH_DEFAULT_MATCHING:
247 refspec_append(&rs, ":");
248 break;
249 case PUSH_DEFAULT_UNSPECIFIED:
251 case PUSH_DEFAULT_SIMPLE:
252 if (triangular)
253 setup_push_current(remote, branch);
254 else
255 setup_push_upstream(remote, branch, triangular, 1);
256 break;
257 case PUSH_DEFAULT_UPSTREAM:
259 setup_push_upstream(remote, branch, triangular, 0);
260 break;
261 case PUSH_DEFAULT_CURRENT:
263 setup_push_current(remote, branch);
264 break;
265 case PUSH_DEFAULT_NOTHING:
267 die(_("You didn't specify any refspecs to push, and "
268 "push.default is \"nothing\"."));
269 break;
270 }
271}
272static const char message_advice_pull_before_push[] =
274 N_("Updates were rejected because the tip of your current branch is behind\n"
275 "its remote counterpart. Integrate the remote changes (e.g.\n"
276 "'git pull ...') before pushing again.\n"
277 "See the 'Note about fast-forwards' in 'git push --help' for details.");
278static const char message_advice_checkout_pull_push[] =
280 N_("Updates were rejected because a pushed branch tip is behind its remote\n"
281 "counterpart. Check out this branch and integrate the remote changes\n"
282 "(e.g. 'git pull ...') before pushing again.\n"
283 "See the 'Note about fast-forwards' in 'git push --help' for details.");
284static const char message_advice_ref_fetch_first[] =
286 N_("Updates were rejected because the remote contains work that you do\n"
287 "not have locally. This is usually caused by another repository pushing\n"
288 "to the same ref. You may want to first integrate the remote changes\n"
289 "(e.g., 'git pull ...') before pushing again.\n"
290 "See the 'Note about fast-forwards' in 'git push --help' for details.");
291static const char message_advice_ref_already_exists[] =
293 N_("Updates were rejected because the tag already exists in the remote.");
294static const char message_advice_ref_needs_force[] =
296 N_("You cannot update a remote ref that points at a non-commit object,\n"
297 "or update a remote ref to make it point at a non-commit object,\n"
298 "without using the '--force' option.\n");
299static void advise_pull_before_push(void)
301{
302 if (!advice_push_non_ff_current || !advice_push_update_rejected)
303 return;
304 advise(_(message_advice_pull_before_push));
305}
306static void advise_checkout_pull_push(void)
308{
309 if (!advice_push_non_ff_matching || !advice_push_update_rejected)
310 return;
311 advise(_(message_advice_checkout_pull_push));
312}
313static void advise_ref_already_exists(void)
315{
316 if (!advice_push_already_exists || !advice_push_update_rejected)
317 return;
318 advise(_(message_advice_ref_already_exists));
319}
320static void advise_ref_fetch_first(void)
322{
323 if (!advice_push_fetch_first || !advice_push_update_rejected)
324 return;
325 advise(_(message_advice_ref_fetch_first));
326}
327static void advise_ref_needs_force(void)
329{
330 if (!advice_push_needs_force || !advice_push_update_rejected)
331 return;
332 advise(_(message_advice_ref_needs_force));
333}
334static int push_with_options(struct transport *transport, struct refspec *rs,
336 int flags)
337{
338 int err;
339 unsigned int reject_reasons;
340 transport_set_verbosity(transport, verbosity, progress);
342 transport->family = family;
343 if (receivepack)
345 transport_set_option(transport,
346 TRANS_OPT_RECEIVEPACK, receivepack);
347 transport_set_option(transport, TRANS_OPT_THIN, thin ? "yes" : NULL);
348 if (!is_empty_cas(&cas)) {
350 if (!transport->smart_options)
351 die("underlying transport does not support --%s option",
352 CAS_OPT_NAME);
353 transport->smart_options->cas = &cas;
354 }
355 if (verbosity > 0)
357 fprintf(stderr, _("Pushing to %s\n"), transport->url);
358 err = transport_push(transport, rs, flags, &reject_reasons);
359 if (err != 0) {
360 fprintf(stderr, "%s", push_get_color(PUSH_COLOR_ERROR));
361 error(_("failed to push some refs to '%s'"), transport->url);
362 fprintf(stderr, "%s", push_get_color(PUSH_COLOR_RESET));
363 }
364 err |= transport_disconnect(transport);
366 if (!err)
367 return 0;
368 if (reject_reasons & REJECT_NON_FF_HEAD) {
370 advise_pull_before_push();
371 } else if (reject_reasons & REJECT_NON_FF_OTHER) {
372 advise_checkout_pull_push();
373 } else if (reject_reasons & REJECT_ALREADY_EXISTS) {
374 advise_ref_already_exists();
375 } else if (reject_reasons & REJECT_FETCH_FIRST) {
376 advise_ref_fetch_first();
377 } else if (reject_reasons & REJECT_NEEDS_FORCE) {
378 advise_ref_needs_force();
379 }
380 return 1;
382}
383static int do_push(const char *repo, int flags,
385 const struct string_list *push_options)
386{
387 int i, errs;
388 struct remote *remote = pushremote_get(repo);
389 const char **url;
390 int url_nr;
391 struct refspec *push_refspec = &rs;
392 if (!remote) {
394 if (repo)
395 die(_("bad repository '%s'"), repo);
396 die(_("No configured push destination.\n"
397 "Either specify the URL from the command-line or configure a remote repository using\n"
398 "\n"
399 " git remote add <name> <url>\n"
400 "\n"
401 "and then push using the remote name\n"
402 "\n"
403 " git push <name>\n"));
404 }
405 if (remote->mirror)
407 flags |= (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE);
408 if (push_options->nr)
410 flags |= TRANSPORT_PUSH_OPTIONS;
411 if (!push_refspec->nr && !(flags & TRANSPORT_PUSH_ALL)) {
413 if (remote->push.nr) {
414 push_refspec = &remote->push;
415 } else if (!(flags & TRANSPORT_PUSH_MIRROR))
416 setup_default_push_refspecs(remote);
417 }
418 errs = 0;
419 url_nr = push_url_of_remote(remote, &url);
420 if (url_nr) {
421 for (i = 0; i < url_nr; i++) {
422 struct transport *transport =
423 transport_get(remote, url[i]);
424 if (flags & TRANSPORT_PUSH_OPTIONS)
425 transport->push_options = push_options;
426 if (push_with_options(transport, push_refspec, flags))
427 errs++;
428 }
429 } else {
430 struct transport *transport =
431 transport_get(remote, NULL);
432 if (flags & TRANSPORT_PUSH_OPTIONS)
433 transport->push_options = push_options;
434 if (push_with_options(transport, push_refspec, flags))
435 errs++;
436 }
437 return !!errs;
438}
439static int option_parse_recurse_submodules(const struct option *opt,
441 const char *arg, int unset)
442{
443 int *recurse_submodules = opt->value;
444 if (unset)
446 *recurse_submodules = RECURSE_SUBMODULES_OFF;
447 else if (arg)
448 *recurse_submodules = parse_push_recurse_submodules_arg(opt->long_name, arg);
449 else
450 die("%s missing parameter", opt->long_name);
451 return 0;
453}
454static void set_push_cert_flags(int *flags, int v)
456{
457 switch (v) {
458 case SEND_PACK_PUSH_CERT_NEVER:
459 *flags &= ~(TRANSPORT_PUSH_CERT_ALWAYS | TRANSPORT_PUSH_CERT_IF_ASKED);
460 break;
461 case SEND_PACK_PUSH_CERT_ALWAYS:
462 *flags |= TRANSPORT_PUSH_CERT_ALWAYS;
463 *flags &= ~TRANSPORT_PUSH_CERT_IF_ASKED;
464 break;
465 case SEND_PACK_PUSH_CERT_IF_ASKED:
466 *flags |= TRANSPORT_PUSH_CERT_IF_ASKED;
467 *flags &= ~TRANSPORT_PUSH_CERT_ALWAYS;
468 break;
469 }
470}
471static int git_push_config(const char *k, const char *v, void *cb)
474{
475 const char *slot_name;
476 int *flags = cb;
477 int status;
478 status = git_gpg_config(k, v, NULL);
480 if (status)
481 return status;
482 if (!strcmp(k, "push.followtags")) {
484 if (git_config_bool(k, v))
485 *flags |= TRANSPORT_PUSH_FOLLOW_TAGS;
486 else
487 *flags &= ~TRANSPORT_PUSH_FOLLOW_TAGS;
488 return 0;
489 } else if (!strcmp(k, "push.gpgsign")) {
490 const char *value;
491 if (!git_config_get_value("push.gpgsign", &value)) {
492 switch (git_parse_maybe_bool(value)) {
493 case 0:
494 set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_NEVER);
495 break;
496 case 1:
497 set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_ALWAYS);
498 break;
499 default:
500 if (value && !strcasecmp(value, "if-asked"))
501 set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_IF_ASKED);
502 else
503 return error("Invalid value for '%s'", k);
504 }
505 }
506 } else if (!strcmp(k, "push.recursesubmodules")) {
507 const char *value;
508 if (!git_config_get_value("push.recursesubmodules", &value))
509 recurse_submodules = parse_push_recurse_submodules_arg(k, value);
510 } else if (!strcmp(k, "submodule.recurse")) {
511 int val = git_config_bool(k, v) ?
512 RECURSE_SUBMODULES_ON_DEMAND : RECURSE_SUBMODULES_OFF;
513 recurse_submodules = val;
514 } else if (!strcmp(k, "push.pushoption")) {
515 if (!v)
516 return config_error_nonbool(k);
517 else
518 if (!*v)
519 string_list_clear(&push_options_config, 0);
520 else
521 string_list_append(&push_options_config, v);
522 return 0;
523 } else if (!strcmp(k, "color.push")) {
524 push_use_color = git_config_colorbool(k, v);
525 return 0;
526 } else if (skip_prefix(k, "color.push.", &slot_name)) {
527 int slot = parse_push_color_slot(slot_name);
528 if (slot < 0)
529 return 0;
530 if (!v)
531 return config_error_nonbool(k);
532 return color_parse(v, push_colors[slot]);
533 }
534 return git_default_config(k, v, NULL);
536}
537int cmd_push(int argc, const char **argv, const char *prefix)
539{
540 int flags = 0;
541 int tags = 0;
542 int push_cert = -1;
543 int rc;
544 const char *repo = NULL; /* default repository */
545 struct string_list push_options_cmdline = STRING_LIST_INIT_DUP;
546 struct string_list *push_options;
547 const struct string_list_item *item;
548 struct option options[] = {
550 OPT__VERBOSITY(&verbosity),
551 OPT_STRING( 0 , "repo", &repo, N_("repository"), N_("repository")),
552 OPT_BIT( 0 , "all", &flags, N_("push all refs"), TRANSPORT_PUSH_ALL),
553 OPT_BIT( 0 , "mirror", &flags, N_("mirror all refs"),
554 (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
555 OPT_BOOL('d', "delete", &deleterefs, N_("delete refs")),
556 OPT_BOOL( 0 , "tags", &tags, N_("push tags (can't be used with --all or --mirror)")),
557 OPT_BIT('n' , "dry-run", &flags, N_("dry run"), TRANSPORT_PUSH_DRY_RUN),
558 OPT_BIT( 0, "porcelain", &flags, N_("machine-readable output"), TRANSPORT_PUSH_PORCELAIN),
559 OPT_BIT('f', "force", &flags, N_("force updates"), TRANSPORT_PUSH_FORCE),
560 { OPTION_CALLBACK,
561 0, CAS_OPT_NAME, &cas, N_("<refname>:<expect>"),
562 N_("require old value of ref to be at this value"),
563 PARSE_OPT_OPTARG | PARSE_OPT_LITERAL_ARGHELP, parseopt_push_cas_option },
564 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, "(check|on-demand|no)",
565 N_("control recursive pushing of submodules"),
566 PARSE_OPT_OPTARG, option_parse_recurse_submodules },
567 OPT_BOOL_F( 0 , "thin", &thin, N_("use thin pack"), PARSE_OPT_NOCOMPLETE),
568 OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", N_("receive pack program")),
569 OPT_STRING( 0 , "exec", &receivepack, "receive-pack", N_("receive pack program")),
570 OPT_BIT('u', "set-upstream", &flags, N_("set upstream for git pull/status"),
571 TRANSPORT_PUSH_SET_UPSTREAM),
572 OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
573 OPT_BIT(0, "prune", &flags, N_("prune locally removed refs"),
574 TRANSPORT_PUSH_PRUNE),
575 OPT_BIT(0, "no-verify", &flags, N_("bypass pre-push hook"), TRANSPORT_PUSH_NO_HOOK),
576 OPT_BIT(0, "follow-tags", &flags, N_("push missing but relevant tags"),
577 TRANSPORT_PUSH_FOLLOW_TAGS),
578 { OPTION_CALLBACK,
579 0, "signed", &push_cert, "(yes|no|if-asked)", N_("GPG sign the push"),
580 PARSE_OPT_OPTARG, option_parse_push_signed },
581 OPT_BIT(0, "atomic", &flags, N_("request atomic transaction on remote side"), TRANSPORT_PUSH_ATOMIC),
582 OPT_STRING_LIST('o', "push-option", &push_options_cmdline, N_("server-specific"), N_("option to transmit")),
583 OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
584 TRANSPORT_FAMILY_IPV4),
585 OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
586 TRANSPORT_FAMILY_IPV6),
587 OPT_END()
588 };
589 packet_trace_identity("push");
591 git_config(git_push_config, &flags);
592 argc = parse_options(argc, argv, prefix, options, push_usage, 0);
593 push_options = (push_options_cmdline.nr
594 ? &push_options_cmdline
595 : &push_options_config);
596 set_push_cert_flags(&flags, push_cert);
597 if (deleterefs && (tags || (flags & (TRANSPORT_PUSH_ALL | TRANSPORT_PUSH_MIRROR))))
599 die(_("--delete is incompatible with --all, --mirror and --tags"));
600 if (deleterefs && argc < 2)
601 die(_("--delete doesn't make sense without any refs"));
602 if (flags & TRANSPORT_PUSH_ALL) {
603 if (tags)
604 die(_("--all and --tags are incompatible"));
605 if (argc >= 2)
606 die(_("--all can't be combined with refspecs"));
607 }
608 if (flags & TRANSPORT_PUSH_MIRROR) {
609 if (tags)
610 die(_("--mirror and --tags are incompatible"));
611 if (argc >= 2)
612 die(_("--mirror can't be combined with refspecs"));
613 }
614 if ((flags & TRANSPORT_PUSH_ALL) && (flags & TRANSPORT_PUSH_MIRROR))
615 die(_("--all and --mirror are incompatible"));
616 if (recurse_submodules == RECURSE_SUBMODULES_CHECK)
618 flags |= TRANSPORT_RECURSE_SUBMODULES_CHECK;
619 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
620 flags |= TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND;
621 else if (recurse_submodules == RECURSE_SUBMODULES_ONLY)
622 flags |= TRANSPORT_RECURSE_SUBMODULES_ONLY;
623 if (tags)
625 refspec_append(&rs, "refs/tags/*");
626 if (argc > 0) {
628 repo = argv[0];
629 set_refspecs(argv + 1, argc - 1, repo);
630 }
631 for_each_string_list_item(item, push_options)
633 if (strchr(item->string, '\n'))
634 die(_("push options must not have new line characters"));
635 rc = do_push(repo, flags, push_options);
637 string_list_clear(&push_options_cmdline, 0);
638 string_list_clear(&push_options_config, 0);
639 if (rc == -1)
640 usage_with_options(push_usage, options);
641 else
642 return rc;
643}