1/*
2 * "git push"
3 */
4#include "cache.h"
5#include "config.h"
6#include "refs.h"
7#include "run-command.h"
8#include "builtin.h"
9#include "remote.h"
10#include "transport.h"
11#include "parse-options.h"
12#include "submodule.h"
13#include "submodule-config.h"
14#include "send-pack.h"
15static const char * const push_usage[] = {
17 N_("git push [<options>] [<repository> [<refspec>...]]"),
18 NULL,
19};
20static int thin = 1;
22static int deleterefs;
23static const char *receivepack;
24static int verbosity;
25static int progress = -1;
26static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
27static enum transport_family family;
28static struct push_cas_option cas;
30static const char **refspec;
32static int refspec_nr;
33static int refspec_alloc;
34static struct string_list push_options_config = STRING_LIST_INIT_DUP;
36static void add_refspec(const char *ref)
38{
39 refspec_nr++;
40 ALLOC_GROW(refspec, refspec_nr, refspec_alloc);
41 refspec[refspec_nr-1] = ref;
42}
43static const char *map_refspec(const char *ref,
45 struct remote *remote, struct ref *local_refs)
46{
47 struct ref *matched = NULL;
48 /* Does "ref" uniquely name our ref? */
50 if (count_refspec_match(ref, local_refs, &matched) != 1)
51 return ref;
52 if (remote->push) {
54 struct refspec query;
55 memset(&query, 0, sizeof(struct refspec));
56 query.src = matched->name;
57 if (!query_refspecs(remote->push, remote->push_refspec_nr, &query) &&
58 query.dst) {
59 struct strbuf buf = STRBUF_INIT;
60 strbuf_addf(&buf, "%s%s:%s",
61 query.force ? "+" : "",
62 query.src, query.dst);
63 return strbuf_detach(&buf, NULL);
64 }
65 }
66 if (push_default == PUSH_DEFAULT_UPSTREAM &&
68 starts_with(matched->name, "refs/heads/")) {
69 struct branch *branch = branch_get(matched->name + 11);
70 if (branch->merge_nr == 1 && branch->merge[0]->src) {
71 struct strbuf buf = STRBUF_INIT;
72 strbuf_addf(&buf, "%s:%s",
73 ref, branch->merge[0]->src);
74 return strbuf_detach(&buf, NULL);
75 }
76 }
77 return ref;
79}
80static void set_refspecs(const char **refs, int nr, const char *repo)
82{
83 struct remote *remote = NULL;
84 struct ref *local_refs = NULL;
85 int i;
86 for (i = 0; i < nr; i++) {
88 const char *ref = refs[i];
89 if (!strcmp("tag", ref)) {
90 struct strbuf tagref = STRBUF_INIT;
91 if (nr <= ++i)
92 die(_("tag shorthand without <tag>"));
93 ref = refs[i];
94 if (deleterefs)
95 strbuf_addf(&tagref, ":refs/tags/%s", ref);
96 else
97 strbuf_addf(&tagref, "refs/tags/%s", ref);
98 ref = strbuf_detach(&tagref, NULL);
99 } else if (deleterefs) {
100 struct strbuf delref = STRBUF_INIT;
101 if (strchr(ref, ':'))
102 die(_("--delete only accepts plain target ref names"));
103 strbuf_addf(&delref, ":%s", ref);
104 ref = strbuf_detach(&delref, NULL);
105 } else if (!strchr(ref, ':')) {
106 if (!remote) {
107 /* lazily grab remote and local_refs */
108 remote = remote_get(repo);
109 local_refs = get_local_heads();
110 }
111 ref = map_refspec(ref, remote, local_refs);
112 }
113 add_refspec(ref);
114 }
115}
116static int push_url_of_remote(struct remote *remote, const char ***url_p)
118{
119 if (remote->pushurl_nr) {
120 *url_p = remote->pushurl;
121 return remote->pushurl_nr;
122 }
123 *url_p = remote->url;
124 return remote->url_nr;
125}
126static NORETURN int die_push_simple(struct branch *branch, struct remote *remote) {
128 /*
129 * There's no point in using shorten_unambiguous_ref here,
130 * as the ambiguity would be on the remote side, not what
131 * we have locally. Plus, this is supposed to be the simple
132 * mode. If the user is doing something crazy like setting
133 * upstream to a non-branch, we should probably be showing
134 * them the big ugly fully qualified ref.
135 */
136 const char *advice_maybe = "";
137 const char *short_upstream = branch->merge[0]->src;
138 skip_prefix(short_upstream, "refs/heads/", &short_upstream);
140 /*
142 * Don't show advice for people who explicitly set
143 * push.default.
144 */
145 if (push_default == PUSH_DEFAULT_UNSPECIFIED)
146 advice_maybe = _("\n"
147 "To choose either option permanently, "
148 "see push.default in 'git help config'.");
149 die(_("The upstream branch of your current branch does not match\n"
150 "the name of your current branch. To push to the upstream branch\n"
151 "on the remote, use\n"
152 "\n"
153 " git push %s HEAD:%s\n"
154 "\n"
155 "To push to the branch of the same name on the remote, use\n"
156 "\n"
157 " git push %s %s\n"
158 "%s"),
159 remote->name, short_upstream,
160 remote->name, branch->name, advice_maybe);
161}
162static const char message_detached_head_die[] =
164 N_("You are not currently on a branch.\n"
165 "To push the history leading to the current (detached HEAD)\n"
166 "state now, use\n"
167 "\n"
168 " git push %s HEAD:<name-of-remote-branch>\n");
169static void setup_push_upstream(struct remote *remote, struct branch *branch,
171 int triangular, int simple)
172{
173 struct strbuf refspec = STRBUF_INIT;
174 if (!branch)
176 die(_(message_detached_head_die), remote->name);
177 if (!branch->merge_nr || !branch->merge || !branch->remote_name)
178 die(_("The current branch %s has no upstream branch.\n"
179 "To push the current branch and set the remote as upstream, use\n"
180 "\n"
181 " git push --set-upstream %s %s\n"),
182 branch->name,
183 remote->name,
184 branch->name);
185 if (branch->merge_nr != 1)
186 die(_("The current branch %s has multiple upstream branches, "
187 "refusing to push."), branch->name);
188 if (triangular)
189 die(_("You are pushing to remote '%s', which is not the upstream of\n"
190 "your current branch '%s', without telling me what to push\n"
191 "to update which remote branch."),
192 remote->name, branch->name);
193 if (simple) {
195 /* Additional safety */
196 if (strcmp(branch->refname, branch->merge[0]->src))
197 die_push_simple(branch, remote);
198 }
199 strbuf_addf(&refspec, "%s:%s", branch->refname, branch->merge[0]->src);
201 add_refspec(refspec.buf);
202}
203static void setup_push_current(struct remote *remote, struct branch *branch)
205{
206 struct strbuf refspec = STRBUF_INIT;
207 if (!branch)
209 die(_(message_detached_head_die), remote->name);
210 strbuf_addf(&refspec, "%s:%s", branch->refname, branch->refname);
211 add_refspec(refspec.buf);
212}
213static int is_workflow_triangular(struct remote *remote)
215{
216 struct remote *fetch_remote = remote_get(NULL);
217 return (fetch_remote && fetch_remote != remote);
218}
219static void setup_default_push_refspecs(struct remote *remote)
221{
222 struct branch *branch = branch_get(NULL);
223 int triangular = is_workflow_triangular(remote);
224 switch (push_default) {
226 default:
227 case PUSH_DEFAULT_MATCHING:
228 add_refspec(":");
229 break;
230 case PUSH_DEFAULT_UNSPECIFIED:
232 case PUSH_DEFAULT_SIMPLE:
233 if (triangular)
234 setup_push_current(remote, branch);
235 else
236 setup_push_upstream(remote, branch, triangular, 1);
237 break;
238 case PUSH_DEFAULT_UPSTREAM:
240 setup_push_upstream(remote, branch, triangular, 0);
241 break;
242 case PUSH_DEFAULT_CURRENT:
244 setup_push_current(remote, branch);
245 break;
246 case PUSH_DEFAULT_NOTHING:
248 die(_("You didn't specify any refspecs to push, and "
249 "push.default is \"nothing\"."));
250 break;
251 }
252}
253static const char message_advice_pull_before_push[] =
255 N_("Updates were rejected because the tip of your current branch is behind\n"
256 "its remote counterpart. Integrate the remote changes (e.g.\n"
257 "'git pull ...') before pushing again.\n"
258 "See the 'Note about fast-forwards' in 'git push --help' for details.");
259static const char message_advice_checkout_pull_push[] =
261 N_("Updates were rejected because a pushed branch tip is behind its remote\n"
262 "counterpart. Check out this branch and integrate the remote changes\n"
263 "(e.g. 'git pull ...') before pushing again.\n"
264 "See the 'Note about fast-forwards' in 'git push --help' for details.");
265static const char message_advice_ref_fetch_first[] =
267 N_("Updates were rejected because the remote contains work that you do\n"
268 "not have locally. This is usually caused by another repository pushing\n"
269 "to the same ref. You may want to first integrate the remote changes\n"
270 "(e.g., 'git pull ...') before pushing again.\n"
271 "See the 'Note about fast-forwards' in 'git push --help' for details.");
272static const char message_advice_ref_already_exists[] =
274 N_("Updates were rejected because the tag already exists in the remote.");
275static const char message_advice_ref_needs_force[] =
277 N_("You cannot update a remote ref that points at a non-commit object,\n"
278 "or update a remote ref to make it point at a non-commit object,\n"
279 "without using the '--force' option.\n");
280static void advise_pull_before_push(void)
282{
283 if (!advice_push_non_ff_current || !advice_push_update_rejected)
284 return;
285 advise(_(message_advice_pull_before_push));
286}
287static void advise_checkout_pull_push(void)
289{
290 if (!advice_push_non_ff_matching || !advice_push_update_rejected)
291 return;
292 advise(_(message_advice_checkout_pull_push));
293}
294static void advise_ref_already_exists(void)
296{
297 if (!advice_push_already_exists || !advice_push_update_rejected)
298 return;
299 advise(_(message_advice_ref_already_exists));
300}
301static void advise_ref_fetch_first(void)
303{
304 if (!advice_push_fetch_first || !advice_push_update_rejected)
305 return;
306 advise(_(message_advice_ref_fetch_first));
307}
308static void advise_ref_needs_force(void)
310{
311 if (!advice_push_needs_force || !advice_push_update_rejected)
312 return;
313 advise(_(message_advice_ref_needs_force));
314}
315static int push_with_options(struct transport *transport, int flags)
317{
318 int err;
319 unsigned int reject_reasons;
320 transport_set_verbosity(transport, verbosity, progress);
322 transport->family = family;
323 if (receivepack)
325 transport_set_option(transport,
326 TRANS_OPT_RECEIVEPACK, receivepack);
327 transport_set_option(transport, TRANS_OPT_THIN, thin ? "yes" : NULL);
328 if (!is_empty_cas(&cas)) {
330 if (!transport->smart_options)
331 die("underlying transport does not support --%s option",
332 CAS_OPT_NAME);
333 transport->smart_options->cas = &cas;
334 }
335 if (verbosity > 0)
337 fprintf(stderr, _("Pushing to %s\n"), transport->url);
338 err = transport_push(transport, refspec_nr, refspec, flags,
339 &reject_reasons);
340 if (err != 0)
341 error(_("failed to push some refs to '%s'"), transport->url);
342 err |= transport_disconnect(transport);
344 if (!err)
345 return 0;
346 if (reject_reasons & REJECT_NON_FF_HEAD) {
348 advise_pull_before_push();
349 } else if (reject_reasons & REJECT_NON_FF_OTHER) {
350 advise_checkout_pull_push();
351 } else if (reject_reasons & REJECT_ALREADY_EXISTS) {
352 advise_ref_already_exists();
353 } else if (reject_reasons & REJECT_FETCH_FIRST) {
354 advise_ref_fetch_first();
355 } else if (reject_reasons & REJECT_NEEDS_FORCE) {
356 advise_ref_needs_force();
357 }
358 return 1;
360}
361static int do_push(const char *repo, int flags,
363 const struct string_list *push_options)
364{
365 int i, errs;
366 struct remote *remote = pushremote_get(repo);
367 const char **url;
368 int url_nr;
369 if (!remote) {
371 if (repo)
372 die(_("bad repository '%s'"), repo);
373 die(_("No configured push destination.\n"
374 "Either specify the URL from the command-line or configure a remote repository using\n"
375 "\n"
376 " git remote add <name> <url>\n"
377 "\n"
378 "and then push using the remote name\n"
379 "\n"
380 " git push <name>\n"));
381 }
382 if (remote->mirror)
384 flags |= (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE);
385 if (push_options->nr)
387 flags |= TRANSPORT_PUSH_OPTIONS;
388 if ((flags & TRANSPORT_PUSH_ALL) && refspec) {
390 if (!strcmp(*refspec, "refs/tags/*"))
391 return error(_("--all and --tags are incompatible"));
392 return error(_("--all can't be combined with refspecs"));
393 }
394 if ((flags & TRANSPORT_PUSH_MIRROR) && refspec) {
396 if (!strcmp(*refspec, "refs/tags/*"))
397 return error(_("--mirror and --tags are incompatible"));
398 return error(_("--mirror can't be combined with refspecs"));
399 }
400 if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) ==
402 (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) {
403 return error(_("--all and --mirror are incompatible"));
404 }
405 if (!refspec && !(flags & TRANSPORT_PUSH_ALL)) {
407 if (remote->push_refspec_nr) {
408 refspec = remote->push_refspec;
409 refspec_nr = remote->push_refspec_nr;
410 } else if (!(flags & TRANSPORT_PUSH_MIRROR))
411 setup_default_push_refspecs(remote);
412 }
413 errs = 0;
414 url_nr = push_url_of_remote(remote, &url);
415 if (url_nr) {
416 for (i = 0; i < url_nr; i++) {
417 struct transport *transport =
418 transport_get(remote, url[i]);
419 if (flags & TRANSPORT_PUSH_OPTIONS)
420 transport->push_options = push_options;
421 if (push_with_options(transport, flags))
422 errs++;
423 }
424 } else {
425 struct transport *transport =
426 transport_get(remote, NULL);
427 if (flags & TRANSPORT_PUSH_OPTIONS)
428 transport->push_options = push_options;
429 if (push_with_options(transport, flags))
430 errs++;
431 }
432 return !!errs;
433}
434static int option_parse_recurse_submodules(const struct option *opt,
436 const char *arg, int unset)
437{
438 int *recurse_submodules = opt->value;
439 if (unset)
441 *recurse_submodules = RECURSE_SUBMODULES_OFF;
442 else if (arg)
443 *recurse_submodules = parse_push_recurse_submodules_arg(opt->long_name, arg);
444 else
445 die("%s missing parameter", opt->long_name);
446 return 0;
448}
449static void set_push_cert_flags(int *flags, int v)
451{
452 switch (v) {
453 case SEND_PACK_PUSH_CERT_NEVER:
454 *flags &= ~(TRANSPORT_PUSH_CERT_ALWAYS | TRANSPORT_PUSH_CERT_IF_ASKED);
455 break;
456 case SEND_PACK_PUSH_CERT_ALWAYS:
457 *flags |= TRANSPORT_PUSH_CERT_ALWAYS;
458 *flags &= ~TRANSPORT_PUSH_CERT_IF_ASKED;
459 break;
460 case SEND_PACK_PUSH_CERT_IF_ASKED:
461 *flags |= TRANSPORT_PUSH_CERT_IF_ASKED;
462 *flags &= ~TRANSPORT_PUSH_CERT_ALWAYS;
463 break;
464 }
465}
466static int git_push_config(const char *k, const char *v, void *cb)
469{
470 int *flags = cb;
471 int status;
472 status = git_gpg_config(k, v, NULL);
474 if (status)
475 return status;
476 if (!strcmp(k, "push.followtags")) {
478 if (git_config_bool(k, v))
479 *flags |= TRANSPORT_PUSH_FOLLOW_TAGS;
480 else
481 *flags &= ~TRANSPORT_PUSH_FOLLOW_TAGS;
482 return 0;
483 } else if (!strcmp(k, "push.gpgsign")) {
484 const char *value;
485 if (!git_config_get_value("push.gpgsign", &value)) {
486 switch (git_parse_maybe_bool(value)) {
487 case 0:
488 set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_NEVER);
489 break;
490 case 1:
491 set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_ALWAYS);
492 break;
493 default:
494 if (value && !strcasecmp(value, "if-asked"))
495 set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_IF_ASKED);
496 else
497 return error("Invalid value for '%s'", k);
498 }
499 }
500 } else if (!strcmp(k, "push.recursesubmodules")) {
501 const char *value;
502 if (!git_config_get_value("push.recursesubmodules", &value))
503 recurse_submodules = parse_push_recurse_submodules_arg(k, value);
504 } else if (!strcmp(k, "submodule.recurse")) {
505 int val = git_config_bool(k, v) ?
506 RECURSE_SUBMODULES_ON_DEMAND : RECURSE_SUBMODULES_OFF;
507 recurse_submodules = val;
508 } else if (!strcmp(k, "push.pushoption")) {
509 if (!v)
510 return config_error_nonbool(k);
511 else
512 if (!*v)
513 string_list_clear(&push_options_config, 0);
514 else
515 string_list_append(&push_options_config, v);
516 return 0;
517 }
518 return git_default_config(k, v, NULL);
520}
521int cmd_push(int argc, const char **argv, const char *prefix)
523{
524 int flags = 0;
525 int tags = 0;
526 int push_cert = -1;
527 int rc;
528 const char *repo = NULL; /* default repository */
529 struct string_list push_options_cmdline = STRING_LIST_INIT_DUP;
530 struct string_list *push_options;
531 const struct string_list_item *item;
532 struct option options[] = {
534 OPT__VERBOSITY(&verbosity),
535 OPT_STRING( 0 , "repo", &repo, N_("repository"), N_("repository")),
536 OPT_BIT( 0 , "all", &flags, N_("push all refs"), TRANSPORT_PUSH_ALL),
537 OPT_BIT( 0 , "mirror", &flags, N_("mirror all refs"),
538 (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
539 OPT_BOOL('d', "delete", &deleterefs, N_("delete refs")),
540 OPT_BOOL( 0 , "tags", &tags, N_("push tags (can't be used with --all or --mirror)")),
541 OPT_BIT('n' , "dry-run", &flags, N_("dry run"), TRANSPORT_PUSH_DRY_RUN),
542 OPT_BIT( 0, "porcelain", &flags, N_("machine-readable output"), TRANSPORT_PUSH_PORCELAIN),
543 OPT_BIT('f', "force", &flags, N_("force updates"), TRANSPORT_PUSH_FORCE),
544 { OPTION_CALLBACK,
545 0, CAS_OPT_NAME, &cas, N_("refname>:<expect"),
546 N_("require old value of ref to be at this value"),
547 PARSE_OPT_OPTARG, parseopt_push_cas_option },
548 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, "check|on-demand|no",
549 N_("control recursive pushing of submodules"),
550 PARSE_OPT_OPTARG, option_parse_recurse_submodules },
551 OPT_BOOL( 0 , "thin", &thin, N_("use thin pack")),
552 OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", N_("receive pack program")),
553 OPT_STRING( 0 , "exec", &receivepack, "receive-pack", N_("receive pack program")),
554 OPT_BIT('u', "set-upstream", &flags, N_("set upstream for git pull/status"),
555 TRANSPORT_PUSH_SET_UPSTREAM),
556 OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
557 OPT_BIT(0, "prune", &flags, N_("prune locally removed refs"),
558 TRANSPORT_PUSH_PRUNE),
559 OPT_BIT(0, "no-verify", &flags, N_("bypass pre-push hook"), TRANSPORT_PUSH_NO_HOOK),
560 OPT_BIT(0, "follow-tags", &flags, N_("push missing but relevant tags"),
561 TRANSPORT_PUSH_FOLLOW_TAGS),
562 { OPTION_CALLBACK,
563 0, "signed", &push_cert, "yes|no|if-asked", N_("GPG sign the push"),
564 PARSE_OPT_OPTARG, option_parse_push_signed },
565 OPT_BIT(0, "atomic", &flags, N_("request atomic transaction on remote side"), TRANSPORT_PUSH_ATOMIC),
566 OPT_STRING_LIST('o', "push-option", &push_options_cmdline, N_("server-specific"), N_("option to transmit")),
567 OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
568 TRANSPORT_FAMILY_IPV4),
569 OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
570 TRANSPORT_FAMILY_IPV6),
571 OPT_END()
572 };
573 packet_trace_identity("push");
575 git_config(git_push_config, &flags);
576 argc = parse_options(argc, argv, prefix, options, push_usage, 0);
577 push_options = (push_options_cmdline.nr
578 ? &push_options_cmdline
579 : &push_options_config);
580 set_push_cert_flags(&flags, push_cert);
581 if (deleterefs && (tags || (flags & (TRANSPORT_PUSH_ALL | TRANSPORT_PUSH_MIRROR))))
583 die(_("--delete is incompatible with --all, --mirror and --tags"));
584 if (deleterefs && argc < 2)
585 die(_("--delete doesn't make sense without any refs"));
586 if (recurse_submodules == RECURSE_SUBMODULES_CHECK)
588 flags |= TRANSPORT_RECURSE_SUBMODULES_CHECK;
589 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
590 flags |= TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND;
591 else if (recurse_submodules == RECURSE_SUBMODULES_ONLY)
592 flags |= TRANSPORT_RECURSE_SUBMODULES_ONLY;
593 if (tags)
595 add_refspec("refs/tags/*");
596 if (argc > 0) {
598 repo = argv[0];
599 set_refspecs(argv + 1, argc - 1, repo);
600 }
601 for_each_string_list_item(item, push_options)
603 if (strchr(item->string, '\n'))
604 die(_("push options must not have new line characters"));
605 rc = do_push(repo, flags, push_options);
607 string_list_clear(&push_options_cmdline, 0);
608 string_list_clear(&push_options_config, 0);
609 if (rc == -1)
610 usage_with_options(push_usage, options);
611 else
612 return rc;
613}