1/*
2 * "git fetch"
3 */
4#include "cache.h"
5#include "config.h"
6#include "repository.h"
7#include "refs.h"
8#include "object-store.h"
9#include "commit.h"
10#include "builtin.h"
11#include "string-list.h"
12#include "remote.h"
13#include "transport.h"
14#include "run-command.h"
15#include "parse-options.h"
16#include "sigchain.h"
17#include "submodule-config.h"
18#include "submodule.h"
19#include "connected.h"
20#include "argv-array.h"
21#include "utf8.h"
22#include "packfile.h"
23#include "list-objects-filter-options.h"
24
25static const char * const builtin_fetch_usage[] = {
26 N_("git fetch [<options>] [<repository> [<refspec>...]]"),
27 N_("git fetch [<options>] <group>"),
28 N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
29 N_("git fetch --all [<options>]"),
30 NULL
31};
32
33enum {
34 TAGS_UNSET = 0,
35 TAGS_DEFAULT = 1,
36 TAGS_SET = 2
37};
38
39static int fetch_prune_config = -1; /* unspecified */
40static int prune = -1; /* unspecified */
41#define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
42
43static int fetch_prune_tags_config = -1; /* unspecified */
44static int prune_tags = -1; /* unspecified */
45#define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
46
47static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity, deepen_relative;
48static int progress = -1;
49static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
50static int max_children = 1;
51static enum transport_family family;
52static const char *depth;
53static const char *deepen_since;
54static const char *upload_pack;
55static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
56static struct strbuf default_rla = STRBUF_INIT;
57static struct transport *gtransport;
58static struct transport *gsecondary;
59static const char *submodule_prefix = "";
60static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
61static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
62static int shown_url = 0;
63static int refmap_alloc, refmap_nr;
64static const char **refmap_array;
65static struct list_objects_filter_options filter_options;
66
67static int git_fetch_config(const char *k, const char *v, void *cb)
68{
69 if (!strcmp(k, "fetch.prune")) {
70 fetch_prune_config = git_config_bool(k, v);
71 return 0;
72 }
73
74 if (!strcmp(k, "fetch.prunetags")) {
75 fetch_prune_tags_config = git_config_bool(k, v);
76 return 0;
77 }
78
79 if (!strcmp(k, "submodule.recurse")) {
80 int r = git_config_bool(k, v) ?
81 RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
82 recurse_submodules = r;
83 }
84
85 if (!strcmp(k, "submodule.fetchjobs")) {
86 max_children = parse_submodule_fetchjobs(k, v);
87 return 0;
88 } else if (!strcmp(k, "fetch.recursesubmodules")) {
89 recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
90 return 0;
91 }
92
93 return git_default_config(k, v, cb);
94}
95
96static int gitmodules_fetch_config(const char *var, const char *value, void *cb)
97{
98 if (!strcmp(var, "submodule.fetchjobs")) {
99 max_children = parse_submodule_fetchjobs(var, value);
100 return 0;
101 } else if (!strcmp(var, "fetch.recursesubmodules")) {
102 recurse_submodules = parse_fetch_recurse_submodules_arg(var, value);
103 return 0;
104 }
105
106 return 0;
107}
108
109static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
110{
111 ALLOC_GROW(refmap_array, refmap_nr + 1, refmap_alloc);
112
113 /*
114 * "git fetch --refmap='' origin foo"
115 * can be used to tell the command not to store anywhere
116 */
117 if (*arg)
118 refmap_array[refmap_nr++] = arg;
119 return 0;
120}
121
122static struct option builtin_fetch_options[] = {
123 OPT__VERBOSITY(&verbosity),
124 OPT_BOOL(0, "all", &all,
125 N_("fetch from all remotes")),
126 OPT_BOOL('a', "append", &append,
127 N_("append to .git/FETCH_HEAD instead of overwriting")),
128 OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
129 N_("path to upload pack on remote end")),
130 OPT__FORCE(&force, N_("force overwrite of local branch"), 0),
131 OPT_BOOL('m', "multiple", &multiple,
132 N_("fetch from multiple remotes")),
133 OPT_SET_INT('t', "tags", &tags,
134 N_("fetch all tags and associated objects"), TAGS_SET),
135 OPT_SET_INT('n', NULL, &tags,
136 N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
137 OPT_INTEGER('j', "jobs", &max_children,
138 N_("number of submodules fetched in parallel")),
139 OPT_BOOL('p', "prune", &prune,
140 N_("prune remote-tracking branches no longer on remote")),
141 OPT_BOOL('P', "prune-tags", &prune_tags,
142 N_("prune local tags no longer on remote and clobber changed tags")),
143 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
144 N_("control recursive fetching of submodules"),
145 PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
146 OPT_BOOL(0, "dry-run", &dry_run,
147 N_("dry run")),
148 OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
149 OPT_BOOL('u', "update-head-ok", &update_head_ok,
150 N_("allow updating of HEAD ref")),
151 OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
152 OPT_STRING(0, "depth", &depth, N_("depth"),
153 N_("deepen history of shallow clone")),
154 OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
155 N_("deepen history of shallow repository based on time")),
156 OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
157 N_("deepen history of shallow clone, excluding rev")),
158 OPT_INTEGER(0, "deepen", &deepen_relative,
159 N_("deepen history of shallow clone")),
160 { OPTION_SET_INT, 0, "unshallow", &unshallow, NULL,
161 N_("convert to a complete repository"),
162 PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 1 },
163 { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
164 N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
165 { OPTION_CALLBACK, 0, "recurse-submodules-default",
166 &recurse_submodules_default, N_("on-demand"),
167 N_("default for recursive fetching of submodules "
168 "(lower priority than config files)"),
169 PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules },
170 OPT_BOOL(0, "update-shallow", &update_shallow,
171 N_("accept refs that update .git/shallow")),
172 { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
173 N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
174 OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
175 TRANSPORT_FAMILY_IPV4),
176 OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
177 TRANSPORT_FAMILY_IPV6),
178 OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
179 OPT_END()
180};
181
182static void unlock_pack(void)
183{
184 if (gtransport)
185 transport_unlock_pack(gtransport);
186 if (gsecondary)
187 transport_unlock_pack(gsecondary);
188}
189
190static void unlock_pack_on_signal(int signo)
191{
192 unlock_pack();
193 sigchain_pop(signo);
194 raise(signo);
195}
196
197static void add_merge_config(struct ref **head,
198 const struct ref *remote_refs,
199 struct branch *branch,
200 struct ref ***tail)
201{
202 int i;
203
204 for (i = 0; i < branch->merge_nr; i++) {
205 struct ref *rm, **old_tail = *tail;
206 struct refspec refspec;
207
208 for (rm = *head; rm; rm = rm->next) {
209 if (branch_merge_matches(branch, i, rm->name)) {
210 rm->fetch_head_status = FETCH_HEAD_MERGE;
211 break;
212 }
213 }
214 if (rm)
215 continue;
216
217 /*
218 * Not fetched to a remote-tracking branch? We need to fetch
219 * it anyway to allow this branch's "branch.$name.merge"
220 * to be honored by 'git pull', but we do not have to
221 * fail if branch.$name.merge is misconfigured to point
222 * at a nonexisting branch. If we were indeed called by
223 * 'git pull', it will notice the misconfiguration because
224 * there is no entry in the resulting FETCH_HEAD marked
225 * for merging.
226 */
227 memset(&refspec, 0, sizeof(refspec));
228 refspec.src = branch->merge[i]->src;
229 get_fetch_map(remote_refs, &refspec, tail, 1);
230 for (rm = *old_tail; rm; rm = rm->next)
231 rm->fetch_head_status = FETCH_HEAD_MERGE;
232 }
233}
234
235static int add_existing(const char *refname, const struct object_id *oid,
236 int flag, void *cbdata)
237{
238 struct string_list *list = (struct string_list *)cbdata;
239 struct string_list_item *item = string_list_insert(list, refname);
240 struct object_id *old_oid = xmalloc(sizeof(*old_oid));
241
242 oidcpy(old_oid, oid);
243 item->util = old_oid;
244 return 0;
245}
246
247static int will_fetch(struct ref **head, const unsigned char *sha1)
248{
249 struct ref *rm = *head;
250 while (rm) {
251 if (!hashcmp(rm->old_oid.hash, sha1))
252 return 1;
253 rm = rm->next;
254 }
255 return 0;
256}
257
258static void find_non_local_tags(struct transport *transport,
259 struct ref **head,
260 struct ref ***tail)
261{
262 struct string_list existing_refs = STRING_LIST_INIT_DUP;
263 struct string_list remote_refs = STRING_LIST_INIT_NODUP;
264 const struct ref *ref;
265 struct string_list_item *item = NULL;
266
267 for_each_ref(add_existing, &existing_refs);
268 for (ref = transport_get_remote_refs(transport); ref; ref = ref->next) {
269 if (!starts_with(ref->name, "refs/tags/"))
270 continue;
271
272 /*
273 * The peeled ref always follows the matching base
274 * ref, so if we see a peeled ref that we don't want
275 * to fetch then we can mark the ref entry in the list
276 * as one to ignore by setting util to NULL.
277 */
278 if (ends_with(ref->name, "^{}")) {
279 if (item &&
280 !has_object_file_with_flags(&ref->old_oid,
281 OBJECT_INFO_QUICK) &&
282 !will_fetch(head, ref->old_oid.hash) &&
283 !has_sha1_file_with_flags(item->util,
284 OBJECT_INFO_QUICK) &&
285 !will_fetch(head, item->util))
286 item->util = NULL;
287 item = NULL;
288 continue;
289 }
290
291 /*
292 * If item is non-NULL here, then we previously saw a
293 * ref not followed by a peeled reference, so we need
294 * to check if it is a lightweight tag that we want to
295 * fetch.
296 */
297 if (item &&
298 !has_sha1_file_with_flags(item->util, OBJECT_INFO_QUICK) &&
299 !will_fetch(head, item->util))
300 item->util = NULL;
301
302 item = NULL;
303
304 /* skip duplicates and refs that we already have */
305 if (string_list_has_string(&remote_refs, ref->name) ||
306 string_list_has_string(&existing_refs, ref->name))
307 continue;
308
309 item = string_list_insert(&remote_refs, ref->name);
310 item->util = (void *)&ref->old_oid;
311 }
312 string_list_clear(&existing_refs, 1);
313
314 /*
315 * We may have a final lightweight tag that needs to be
316 * checked to see if it needs fetching.
317 */
318 if (item &&
319 !has_sha1_file_with_flags(item->util, OBJECT_INFO_QUICK) &&
320 !will_fetch(head, item->util))
321 item->util = NULL;
322
323 /*
324 * For all the tags in the remote_refs string list,
325 * add them to the list of refs to be fetched
326 */
327 for_each_string_list_item(item, &remote_refs) {
328 /* Unless we have already decided to ignore this item... */
329 if (item->util)
330 {
331 struct ref *rm = alloc_ref(item->string);
332 rm->peer_ref = alloc_ref(item->string);
333 oidcpy(&rm->old_oid, item->util);
334 **tail = rm;
335 *tail = &rm->next;
336 }
337 }
338
339 string_list_clear(&remote_refs, 0);
340}
341
342static struct ref *get_ref_map(struct transport *transport,
343 struct refspec *refspecs, int refspec_count,
344 int tags, int *autotags)
345{
346 int i;
347 struct ref *rm;
348 struct ref *ref_map = NULL;
349 struct ref **tail = &ref_map;
350
351 /* opportunistically-updated references: */
352 struct ref *orefs = NULL, **oref_tail = &orefs;
353
354 const struct ref *remote_refs = transport_get_remote_refs(transport);
355
356 if (refspec_count) {
357 struct refspec *fetch_refspec;
358 int fetch_refspec_nr;
359
360 for (i = 0; i < refspec_count; i++) {
361 get_fetch_map(remote_refs, &refspecs[i], &tail, 0);
362 if (refspecs[i].dst && refspecs[i].dst[0])
363 *autotags = 1;
364 }
365 /* Merge everything on the command line (but not --tags) */
366 for (rm = ref_map; rm; rm = rm->next)
367 rm->fetch_head_status = FETCH_HEAD_MERGE;
368
369 /*
370 * For any refs that we happen to be fetching via
371 * command-line arguments, the destination ref might
372 * have been missing or have been different than the
373 * remote-tracking ref that would be derived from the
374 * configured refspec. In these cases, we want to
375 * take the opportunity to update their configured
376 * remote-tracking reference. However, we do not want
377 * to mention these entries in FETCH_HEAD at all, as
378 * they would simply be duplicates of existing
379 * entries, so we set them FETCH_HEAD_IGNORE below.
380 *
381 * We compute these entries now, based only on the
382 * refspecs specified on the command line. But we add
383 * them to the list following the refspecs resulting
384 * from the tags option so that one of the latter,
385 * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
386 * by ref_remove_duplicates() in favor of one of these
387 * opportunistic entries with FETCH_HEAD_IGNORE.
388 */
389 if (refmap_array) {
390 fetch_refspec = parse_fetch_refspec(refmap_nr, refmap_array);
391 fetch_refspec_nr = refmap_nr;
392 } else {
393 fetch_refspec = transport->remote->fetch;
394 fetch_refspec_nr = transport->remote->fetch_refspec_nr;
395 }
396
397 for (i = 0; i < fetch_refspec_nr; i++)
398 get_fetch_map(ref_map, &fetch_refspec[i], &oref_tail, 1);
399 } else if (refmap_array) {
400 die("--refmap option is only meaningful with command-line refspec(s).");
401 } else {
402 /* Use the defaults */
403 struct remote *remote = transport->remote;
404 struct branch *branch = branch_get(NULL);
405 int has_merge = branch_has_merge_config(branch);
406 if (remote &&
407 (remote->fetch_refspec_nr ||
408 /* Note: has_merge implies non-NULL branch->remote_name */
409 (has_merge && !strcmp(branch->remote_name, remote->name)))) {
410 for (i = 0; i < remote->fetch_refspec_nr; i++) {
411 get_fetch_map(remote_refs, &remote->fetch[i], &tail, 0);
412 if (remote->fetch[i].dst &&
413 remote->fetch[i].dst[0])
414 *autotags = 1;
415 if (!i && !has_merge && ref_map &&
416 !remote->fetch[0].pattern)
417 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
418 }
419 /*
420 * if the remote we're fetching from is the same
421 * as given in branch.<name>.remote, we add the
422 * ref given in branch.<name>.merge, too.
423 *
424 * Note: has_merge implies non-NULL branch->remote_name
425 */
426 if (has_merge &&
427 !strcmp(branch->remote_name, remote->name))
428 add_merge_config(&ref_map, remote_refs, branch, &tail);
429 } else {
430 ref_map = get_remote_ref(remote_refs, "HEAD");
431 if (!ref_map)
432 die(_("Couldn't find remote ref HEAD"));
433 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
434 tail = &ref_map->next;
435 }
436 }
437
438 if (tags == TAGS_SET)
439 /* also fetch all tags */
440 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
441 else if (tags == TAGS_DEFAULT && *autotags)
442 find_non_local_tags(transport, &ref_map, &tail);
443
444 /* Now append any refs to be updated opportunistically: */
445 *tail = orefs;
446 for (rm = orefs; rm; rm = rm->next) {
447 rm->fetch_head_status = FETCH_HEAD_IGNORE;
448 tail = &rm->next;
449 }
450
451 return ref_remove_duplicates(ref_map);
452}
453
454#define STORE_REF_ERROR_OTHER 1
455#define STORE_REF_ERROR_DF_CONFLICT 2
456
457static int s_update_ref(const char *action,
458 struct ref *ref,
459 int check_old)
460{
461 char *msg;
462 char *rla = getenv("GIT_REFLOG_ACTION");
463 struct ref_transaction *transaction;
464 struct strbuf err = STRBUF_INIT;
465 int ret, df_conflict = 0;
466
467 if (dry_run)
468 return 0;
469 if (!rla)
470 rla = default_rla.buf;
471 msg = xstrfmt("%s: %s", rla, action);
472
473 transaction = ref_transaction_begin(&err);
474 if (!transaction ||
475 ref_transaction_update(transaction, ref->name,
476 &ref->new_oid,
477 check_old ? &ref->old_oid : NULL,
478 0, msg, &err))
479 goto fail;
480
481 ret = ref_transaction_commit(transaction, &err);
482 if (ret) {
483 df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
484 goto fail;
485 }
486
487 ref_transaction_free(transaction);
488 strbuf_release(&err);
489 free(msg);
490 return 0;
491fail:
492 ref_transaction_free(transaction);
493 error("%s", err.buf);
494 strbuf_release(&err);
495 free(msg);
496 return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
497 : STORE_REF_ERROR_OTHER;
498}
499
500static int refcol_width = 10;
501static int compact_format;
502
503static void adjust_refcol_width(const struct ref *ref)
504{
505 int max, rlen, llen, len;
506
507 /* uptodate lines are only shown on high verbosity level */
508 if (!verbosity && !oidcmp(&ref->peer_ref->old_oid, &ref->old_oid))
509 return;
510
511 max = term_columns();
512 rlen = utf8_strwidth(prettify_refname(ref->name));
513
514 llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
515
516 /*
517 * rough estimation to see if the output line is too long and
518 * should not be counted (we can't do precise calculation
519 * anyway because we don't know if the error explanation part
520 * will be printed in update_local_ref)
521 */
522 if (compact_format) {
523 llen = 0;
524 max = max * 2 / 3;
525 }
526 len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
527 if (len >= max)
528 return;
529
530 /*
531 * Not precise calculation for compact mode because '*' can
532 * appear on the left hand side of '->' and shrink the column
533 * back.
534 */
535 if (refcol_width < rlen)
536 refcol_width = rlen;
537}
538
539static void prepare_format_display(struct ref *ref_map)
540{
541 struct ref *rm;
542 const char *format = "full";
543
544 git_config_get_string_const("fetch.output", &format);
545 if (!strcasecmp(format, "full"))
546 compact_format = 0;
547 else if (!strcasecmp(format, "compact"))
548 compact_format = 1;
549 else
550 die(_("configuration fetch.output contains invalid value %s"),
551 format);
552
553 for (rm = ref_map; rm; rm = rm->next) {
554 if (rm->status == REF_STATUS_REJECT_SHALLOW ||
555 !rm->peer_ref ||
556 !strcmp(rm->name, "HEAD"))
557 continue;
558
559 adjust_refcol_width(rm);
560 }
561}
562
563static void print_remote_to_local(struct strbuf *display,
564 const char *remote, const char *local)
565{
566 strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
567}
568
569static int find_and_replace(struct strbuf *haystack,
570 const char *needle,
571 const char *placeholder)
572{
573 const char *p = strstr(haystack->buf, needle);
574 int plen, nlen;
575
576 if (!p)
577 return 0;
578
579 if (p > haystack->buf && p[-1] != '/')
580 return 0;
581
582 plen = strlen(p);
583 nlen = strlen(needle);
584 if (plen > nlen && p[nlen] != '/')
585 return 0;
586
587 strbuf_splice(haystack, p - haystack->buf, nlen,
588 placeholder, strlen(placeholder));
589 return 1;
590}
591
592static void print_compact(struct strbuf *display,
593 const char *remote, const char *local)
594{
595 struct strbuf r = STRBUF_INIT;
596 struct strbuf l = STRBUF_INIT;
597
598 if (!strcmp(remote, local)) {
599 strbuf_addf(display, "%-*s -> *", refcol_width, remote);
600 return;
601 }
602
603 strbuf_addstr(&r, remote);
604 strbuf_addstr(&l, local);
605
606 if (!find_and_replace(&r, local, "*"))
607 find_and_replace(&l, remote, "*");
608 print_remote_to_local(display, r.buf, l.buf);
609
610 strbuf_release(&r);
611 strbuf_release(&l);
612}
613
614static void format_display(struct strbuf *display, char code,
615 const char *summary, const char *error,
616 const char *remote, const char *local,
617 int summary_width)
618{
619 int width = (summary_width + strlen(summary) - gettext_width(summary));
620
621 strbuf_addf(display, "%c %-*s ", code, width, summary);
622 if (!compact_format)
623 print_remote_to_local(display, remote, local);
624 else
625 print_compact(display, remote, local);
626 if (error)
627 strbuf_addf(display, " (%s)", error);
628}
629
630static int update_local_ref(struct ref *ref,
631 const char *remote,
632 const struct ref *remote_ref,
633 struct strbuf *display,
634 int summary_width)
635{
636 struct commit *current = NULL, *updated;
637 enum object_type type;
638 struct branch *current_branch = branch_get(NULL);
639 const char *pretty_ref = prettify_refname(ref->name);
640
641 type = oid_object_info(the_repository, &ref->new_oid, NULL);
642 if (type < 0)
643 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
644
645 if (!oidcmp(&ref->old_oid, &ref->new_oid)) {
646 if (verbosity > 0)
647 format_display(display, '=', _("[up to date]"), NULL,
648 remote, pretty_ref, summary_width);
649 return 0;
650 }
651
652 if (current_branch &&
653 !strcmp(ref->name, current_branch->name) &&
654 !(update_head_ok || is_bare_repository()) &&
655 !is_null_oid(&ref->old_oid)) {
656 /*
657 * If this is the head, and it's not okay to update
658 * the head, and the old value of the head isn't empty...
659 */
660 format_display(display, '!', _("[rejected]"),
661 _("can't fetch in current branch"),
662 remote, pretty_ref, summary_width);
663 return 1;
664 }
665
666 if (!is_null_oid(&ref->old_oid) &&
667 starts_with(ref->name, "refs/tags/")) {
668 int r;
669 r = s_update_ref("updating tag", ref, 0);
670 format_display(display, r ? '!' : 't', _("[tag update]"),
671 r ? _("unable to update local ref") : NULL,
672 remote, pretty_ref, summary_width);
673 return r;
674 }
675
676 current = lookup_commit_reference_gently(&ref->old_oid, 1);
677 updated = lookup_commit_reference_gently(&ref->new_oid, 1);
678 if (!current || !updated) {
679 const char *msg;
680 const char *what;
681 int r;
682 /*
683 * Nicely describe the new ref we're fetching.
684 * Base this on the remote's ref name, as it's
685 * more likely to follow a standard layout.
686 */
687 const char *name = remote_ref ? remote_ref->name : "";
688 if (starts_with(name, "refs/tags/")) {
689 msg = "storing tag";
690 what = _("[new tag]");
691 } else if (starts_with(name, "refs/heads/")) {
692 msg = "storing head";
693 what = _("[new branch]");
694 } else {
695 msg = "storing ref";
696 what = _("[new ref]");
697 }
698
699 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
700 (recurse_submodules != RECURSE_SUBMODULES_ON))
701 check_for_new_submodule_commits(&ref->new_oid);
702 r = s_update_ref(msg, ref, 0);
703 format_display(display, r ? '!' : '*', what,
704 r ? _("unable to update local ref") : NULL,
705 remote, pretty_ref, summary_width);
706 return r;
707 }
708
709 if (in_merge_bases(current, updated)) {
710 struct strbuf quickref = STRBUF_INIT;
711 int r;
712 strbuf_add_unique_abbrev(&quickref, ¤t->object.oid, DEFAULT_ABBREV);
713 strbuf_addstr(&quickref, "..");
714 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
715 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
716 (recurse_submodules != RECURSE_SUBMODULES_ON))
717 check_for_new_submodule_commits(&ref->new_oid);
718 r = s_update_ref("fast-forward", ref, 1);
719 format_display(display, r ? '!' : ' ', quickref.buf,
720 r ? _("unable to update local ref") : NULL,
721 remote, pretty_ref, summary_width);
722 strbuf_release(&quickref);
723 return r;
724 } else if (force || ref->force) {
725 struct strbuf quickref = STRBUF_INIT;
726 int r;
727 strbuf_add_unique_abbrev(&quickref, ¤t->object.oid, DEFAULT_ABBREV);
728 strbuf_addstr(&quickref, "...");
729 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
730 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
731 (recurse_submodules != RECURSE_SUBMODULES_ON))
732 check_for_new_submodule_commits(&ref->new_oid);
733 r = s_update_ref("forced-update", ref, 1);
734 format_display(display, r ? '!' : '+', quickref.buf,
735 r ? _("unable to update local ref") : _("forced update"),
736 remote, pretty_ref, summary_width);
737 strbuf_release(&quickref);
738 return r;
739 } else {
740 format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
741 remote, pretty_ref, summary_width);
742 return 1;
743 }
744}
745
746static int iterate_ref_map(void *cb_data, struct object_id *oid)
747{
748 struct ref **rm = cb_data;
749 struct ref *ref = *rm;
750
751 while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
752 ref = ref->next;
753 if (!ref)
754 return -1; /* end of the list */
755 *rm = ref->next;
756 oidcpy(oid, &ref->old_oid);
757 return 0;
758}
759
760static int store_updated_refs(const char *raw_url, const char *remote_name,
761 struct ref *ref_map)
762{
763 FILE *fp;
764 struct commit *commit;
765 int url_len, i, rc = 0;
766 struct strbuf note = STRBUF_INIT;
767 const char *what, *kind;
768 struct ref *rm;
769 char *url;
770 const char *filename = dry_run ? "/dev/null" : git_path_fetch_head(the_repository);
771 int want_status;
772 int summary_width = transport_summary_width(ref_map);
773
774 fp = fopen(filename, "a");
775 if (!fp)
776 return error_errno(_("cannot open %s"), filename);
777
778 if (raw_url)
779 url = transport_anonymize_url(raw_url);
780 else
781 url = xstrdup("foreign");
782
783 rm = ref_map;
784 if (check_connected(iterate_ref_map, &rm, NULL)) {
785 rc = error(_("%s did not send all necessary objects\n"), url);
786 goto abort;
787 }
788
789 prepare_format_display(ref_map);
790
791 /*
792 * We do a pass for each fetch_head_status type in their enum order, so
793 * merged entries are written before not-for-merge. That lets readers
794 * use FETCH_HEAD as a refname to refer to the ref to be merged.
795 */
796 for (want_status = FETCH_HEAD_MERGE;
797 want_status <= FETCH_HEAD_IGNORE;
798 want_status++) {
799 for (rm = ref_map; rm; rm = rm->next) {
800 struct ref *ref = NULL;
801 const char *merge_status_marker = "";
802
803 if (rm->status == REF_STATUS_REJECT_SHALLOW) {
804 if (want_status == FETCH_HEAD_MERGE)
805 warning(_("reject %s because shallow roots are not allowed to be updated"),
806 rm->peer_ref ? rm->peer_ref->name : rm->name);
807 continue;
808 }
809
810 commit = lookup_commit_reference_gently(&rm->old_oid,
811 1);
812 if (!commit)
813 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
814
815 if (rm->fetch_head_status != want_status)
816 continue;
817
818 if (rm->peer_ref) {
819 ref = alloc_ref(rm->peer_ref->name);
820 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
821 oidcpy(&ref->new_oid, &rm->old_oid);
822 ref->force = rm->peer_ref->force;
823 }
824
825
826 if (!strcmp(rm->name, "HEAD")) {
827 kind = "";
828 what = "";
829 }
830 else if (starts_with(rm->name, "refs/heads/")) {
831 kind = "branch";
832 what = rm->name + 11;
833 }
834 else if (starts_with(rm->name, "refs/tags/")) {
835 kind = "tag";
836 what = rm->name + 10;
837 }
838 else if (starts_with(rm->name, "refs/remotes/")) {
839 kind = "remote-tracking branch";
840 what = rm->name + 13;
841 }
842 else {
843 kind = "";
844 what = rm->name;
845 }
846
847 url_len = strlen(url);
848 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
849 ;
850 url_len = i + 1;
851 if (4 < i && !strncmp(".git", url + i - 3, 4))
852 url_len = i - 3;
853
854 strbuf_reset(¬e);
855 if (*what) {
856 if (*kind)
857 strbuf_addf(¬e, "%s ", kind);
858 strbuf_addf(¬e, "'%s' of ", what);
859 }
860 switch (rm->fetch_head_status) {
861 case FETCH_HEAD_NOT_FOR_MERGE:
862 merge_status_marker = "not-for-merge";
863 /* fall-through */
864 case FETCH_HEAD_MERGE:
865 fprintf(fp, "%s\t%s\t%s",
866 oid_to_hex(&rm->old_oid),
867 merge_status_marker,
868 note.buf);
869 for (i = 0; i < url_len; ++i)
870 if ('\n' == url[i])
871 fputs("\\n", fp);
872 else
873 fputc(url[i], fp);
874 fputc('\n', fp);
875 break;
876 default:
877 /* do not write anything to FETCH_HEAD */
878 break;
879 }
880
881 strbuf_reset(¬e);
882 if (ref) {
883 rc |= update_local_ref(ref, what, rm, ¬e,
884 summary_width);
885 free(ref);
886 } else
887 format_display(¬e, '*',
888 *kind ? kind : "branch", NULL,
889 *what ? what : "HEAD",
890 "FETCH_HEAD", summary_width);
891 if (note.len) {
892 if (verbosity >= 0 && !shown_url) {
893 fprintf(stderr, _("From %.*s\n"),
894 url_len, url);
895 shown_url = 1;
896 }
897 if (verbosity >= 0)
898 fprintf(stderr, " %s\n", note.buf);
899 }
900 }
901 }
902
903 if (rc & STORE_REF_ERROR_DF_CONFLICT)
904 error(_("some local refs could not be updated; try running\n"
905 " 'git remote prune %s' to remove any old, conflicting "
906 "branches"), remote_name);
907
908 abort:
909 strbuf_release(¬e);
910 free(url);
911 fclose(fp);
912 return rc;
913}
914
915/*
916 * We would want to bypass the object transfer altogether if
917 * everything we are going to fetch already exists and is connected
918 * locally.
919 */
920static int quickfetch(struct ref *ref_map)
921{
922 struct ref *rm = ref_map;
923 struct check_connected_options opt = CHECK_CONNECTED_INIT;
924
925 /*
926 * If we are deepening a shallow clone we already have these
927 * objects reachable. Running rev-list here will return with
928 * a good (0) exit status and we'll bypass the fetch that we
929 * really need to perform. Claiming failure now will ensure
930 * we perform the network exchange to deepen our history.
931 */
932 if (deepen)
933 return -1;
934 opt.quiet = 1;
935 return check_connected(iterate_ref_map, &rm, &opt);
936}
937
938static int fetch_refs(struct transport *transport, struct ref *ref_map)
939{
940 int ret = quickfetch(ref_map);
941 if (ret)
942 ret = transport_fetch_refs(transport, ref_map);
943 if (!ret)
944 ret |= store_updated_refs(transport->url,
945 transport->remote->name,
946 ref_map);
947 transport_unlock_pack(transport);
948 return ret;
949}
950
951static int prune_refs(struct refspec *refs, int ref_count, struct ref *ref_map,
952 const char *raw_url)
953{
954 int url_len, i, result = 0;
955 struct ref *ref, *stale_refs = get_stale_heads(refs, ref_count, ref_map);
956 char *url;
957 int summary_width = transport_summary_width(stale_refs);
958 const char *dangling_msg = dry_run
959 ? _(" (%s will become dangling)")
960 : _(" (%s has become dangling)");
961
962 if (raw_url)
963 url = transport_anonymize_url(raw_url);
964 else
965 url = xstrdup("foreign");
966
967 url_len = strlen(url);
968 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
969 ;
970
971 url_len = i + 1;
972 if (4 < i && !strncmp(".git", url + i - 3, 4))
973 url_len = i - 3;
974
975 if (!dry_run) {
976 struct string_list refnames = STRING_LIST_INIT_NODUP;
977
978 for (ref = stale_refs; ref; ref = ref->next)
979 string_list_append(&refnames, ref->name);
980
981 result = delete_refs("fetch: prune", &refnames, 0);
982 string_list_clear(&refnames, 0);
983 }
984
985 if (verbosity >= 0) {
986 for (ref = stale_refs; ref; ref = ref->next) {
987 struct strbuf sb = STRBUF_INIT;
988 if (!shown_url) {
989 fprintf(stderr, _("From %.*s\n"), url_len, url);
990 shown_url = 1;
991 }
992 format_display(&sb, '-', _("[deleted]"), NULL,
993 _("(none)"), prettify_refname(ref->name),
994 summary_width);
995 fprintf(stderr, " %s\n",sb.buf);
996 strbuf_release(&sb);
997 warn_dangling_symref(stderr, dangling_msg, ref->name);
998 }
999 }
1000
1001 free(url);
1002 free_refs(stale_refs);
1003 return result;
1004}
1005
1006static void check_not_current_branch(struct ref *ref_map)
1007{
1008 struct branch *current_branch = branch_get(NULL);
1009
1010 if (is_bare_repository() || !current_branch)
1011 return;
1012
1013 for (; ref_map; ref_map = ref_map->next)
1014 if (ref_map->peer_ref && !strcmp(current_branch->refname,
1015 ref_map->peer_ref->name))
1016 die(_("Refusing to fetch into current branch %s "
1017 "of non-bare repository"), current_branch->refname);
1018}
1019
1020static int truncate_fetch_head(void)
1021{
1022 const char *filename = git_path_fetch_head(the_repository);
1023 FILE *fp = fopen_for_writing(filename);
1024
1025 if (!fp)
1026 return error_errno(_("cannot open %s"), filename);
1027 fclose(fp);
1028 return 0;
1029}
1030
1031static void set_option(struct transport *transport, const char *name, const char *value)
1032{
1033 int r = transport_set_option(transport, name, value);
1034 if (r < 0)
1035 die(_("Option \"%s\" value \"%s\" is not valid for %s"),
1036 name, value, transport->url);
1037 if (r > 0)
1038 warning(_("Option \"%s\" is ignored for %s\n"),
1039 name, transport->url);
1040}
1041
1042static struct transport *prepare_transport(struct remote *remote, int deepen)
1043{
1044 struct transport *transport;
1045 transport = transport_get(remote, NULL);
1046 transport_set_verbosity(transport, verbosity, progress);
1047 transport->family = family;
1048 if (upload_pack)
1049 set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
1050 if (keep)
1051 set_option(transport, TRANS_OPT_KEEP, "yes");
1052 if (depth)
1053 set_option(transport, TRANS_OPT_DEPTH, depth);
1054 if (deepen && deepen_since)
1055 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
1056 if (deepen && deepen_not.nr)
1057 set_option(transport, TRANS_OPT_DEEPEN_NOT,
1058 (const char *)&deepen_not);
1059 if (deepen_relative)
1060 set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
1061 if (update_shallow)
1062 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
1063 if (filter_options.choice) {
1064 set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
1065 filter_options.filter_spec);
1066 set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
1067 }
1068 return transport;
1069}
1070
1071static void backfill_tags(struct transport *transport, struct ref *ref_map)
1072{
1073 int cannot_reuse;
1074
1075 /*
1076 * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
1077 * when remote helper is used (setting it to an empty string
1078 * is not unsetting). We could extend the remote helper
1079 * protocol for that, but for now, just force a new connection
1080 * without deepen-since. Similar story for deepen-not.
1081 */
1082 cannot_reuse = transport->cannot_reuse ||
1083 deepen_since || deepen_not.nr;
1084 if (cannot_reuse) {
1085 gsecondary = prepare_transport(transport->remote, 0);
1086 transport = gsecondary;
1087 }
1088
1089 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
1090 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
1091 transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
1092 fetch_refs(transport, ref_map);
1093
1094 if (gsecondary) {
1095 transport_disconnect(gsecondary);
1096 gsecondary = NULL;
1097 }
1098}
1099
1100static int do_fetch(struct transport *transport,
1101 struct refspec *refs, int ref_count)
1102{
1103 struct string_list existing_refs = STRING_LIST_INIT_DUP;
1104 struct ref *ref_map;
1105 struct ref *rm;
1106 int autotags = (transport->remote->fetch_tags == 1);
1107 int retcode = 0;
1108
1109 for_each_ref(add_existing, &existing_refs);
1110
1111 if (tags == TAGS_DEFAULT) {
1112 if (transport->remote->fetch_tags == 2)
1113 tags = TAGS_SET;
1114 if (transport->remote->fetch_tags == -1)
1115 tags = TAGS_UNSET;
1116 }
1117
1118 /* if not appending, truncate FETCH_HEAD */
1119 if (!append && !dry_run) {
1120 retcode = truncate_fetch_head();
1121 if (retcode)
1122 goto cleanup;
1123 }
1124
1125 ref_map = get_ref_map(transport, refs, ref_count, tags, &autotags);
1126 if (!update_head_ok)
1127 check_not_current_branch(ref_map);
1128
1129 for (rm = ref_map; rm; rm = rm->next) {
1130 if (rm->peer_ref) {
1131 struct string_list_item *peer_item =
1132 string_list_lookup(&existing_refs,
1133 rm->peer_ref->name);
1134 if (peer_item) {
1135 struct object_id *old_oid = peer_item->util;
1136 oidcpy(&rm->peer_ref->old_oid, old_oid);
1137 }
1138 }
1139 }
1140
1141 if (tags == TAGS_DEFAULT && autotags)
1142 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
1143 if (prune) {
1144 /*
1145 * We only prune based on refspecs specified
1146 * explicitly (via command line or configuration); we
1147 * don't care whether --tags was specified.
1148 */
1149 if (ref_count) {
1150 prune_refs(refs, ref_count, ref_map, transport->url);
1151 } else {
1152 prune_refs(transport->remote->fetch,
1153 transport->remote->fetch_refspec_nr,
1154 ref_map,
1155 transport->url);
1156 }
1157 }
1158 if (fetch_refs(transport, ref_map)) {
1159 free_refs(ref_map);
1160 retcode = 1;
1161 goto cleanup;
1162 }
1163 free_refs(ref_map);
1164
1165 /* if neither --no-tags nor --tags was specified, do automated tag
1166 * following ... */
1167 if (tags == TAGS_DEFAULT && autotags) {
1168 struct ref **tail = &ref_map;
1169 ref_map = NULL;
1170 find_non_local_tags(transport, &ref_map, &tail);
1171 if (ref_map)
1172 backfill_tags(transport, ref_map);
1173 free_refs(ref_map);
1174 }
1175
1176 cleanup:
1177 string_list_clear(&existing_refs, 1);
1178 return retcode;
1179}
1180
1181static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1182{
1183 struct string_list *list = priv;
1184 if (!remote->skip_default_update)
1185 string_list_append(list, remote->name);
1186 return 0;
1187}
1188
1189struct remote_group_data {
1190 const char *name;
1191 struct string_list *list;
1192};
1193
1194static int get_remote_group(const char *key, const char *value, void *priv)
1195{
1196 struct remote_group_data *g = priv;
1197
1198 if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
1199 /* split list by white space */
1200 while (*value) {
1201 size_t wordlen = strcspn(value, " \t\n");
1202
1203 if (wordlen >= 1)
1204 string_list_append_nodup(g->list,
1205 xstrndup(value, wordlen));
1206 value += wordlen + (value[wordlen] != '\0');
1207 }
1208 }
1209
1210 return 0;
1211}
1212
1213static int add_remote_or_group(const char *name, struct string_list *list)
1214{
1215 int prev_nr = list->nr;
1216 struct remote_group_data g;
1217 g.name = name; g.list = list;
1218
1219 git_config(get_remote_group, &g);
1220 if (list->nr == prev_nr) {
1221 struct remote *remote = remote_get(name);
1222 if (!remote_is_configured(remote, 0))
1223 return 0;
1224 string_list_append(list, remote->name);
1225 }
1226 return 1;
1227}
1228
1229static void add_options_to_argv(struct argv_array *argv)
1230{
1231 if (dry_run)
1232 argv_array_push(argv, "--dry-run");
1233 if (prune != -1)
1234 argv_array_push(argv, prune ? "--prune" : "--no-prune");
1235 if (prune_tags != -1)
1236 argv_array_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
1237 if (update_head_ok)
1238 argv_array_push(argv, "--update-head-ok");
1239 if (force)
1240 argv_array_push(argv, "--force");
1241 if (keep)
1242 argv_array_push(argv, "--keep");
1243 if (recurse_submodules == RECURSE_SUBMODULES_ON)
1244 argv_array_push(argv, "--recurse-submodules");
1245 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
1246 argv_array_push(argv, "--recurse-submodules=on-demand");
1247 if (tags == TAGS_SET)
1248 argv_array_push(argv, "--tags");
1249 else if (tags == TAGS_UNSET)
1250 argv_array_push(argv, "--no-tags");
1251 if (verbosity >= 2)
1252 argv_array_push(argv, "-v");
1253 if (verbosity >= 1)
1254 argv_array_push(argv, "-v");
1255 else if (verbosity < 0)
1256 argv_array_push(argv, "-q");
1257
1258}
1259
1260static int fetch_multiple(struct string_list *list)
1261{
1262 int i, result = 0;
1263 struct argv_array argv = ARGV_ARRAY_INIT;
1264
1265 if (!append && !dry_run) {
1266 int errcode = truncate_fetch_head();
1267 if (errcode)
1268 return errcode;
1269 }
1270
1271 argv_array_pushl(&argv, "fetch", "--append", NULL);
1272 add_options_to_argv(&argv);
1273
1274 for (i = 0; i < list->nr; i++) {
1275 const char *name = list->items[i].string;
1276 argv_array_push(&argv, name);
1277 if (verbosity >= 0)
1278 printf(_("Fetching %s\n"), name);
1279 if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
1280 error(_("Could not fetch %s"), name);
1281 result = 1;
1282 }
1283 argv_array_pop(&argv);
1284 }
1285
1286 argv_array_clear(&argv);
1287 return result;
1288}
1289
1290/*
1291 * Fetching from the promisor remote should use the given filter-spec
1292 * or inherit the default filter-spec from the config.
1293 */
1294static inline void fetch_one_setup_partial(struct remote *remote)
1295{
1296 /*
1297 * Explicit --no-filter argument overrides everything, regardless
1298 * of any prior partial clones and fetches.
1299 */
1300 if (filter_options.no_filter)
1301 return;
1302
1303 /*
1304 * If no prior partial clone/fetch and the current fetch DID NOT
1305 * request a partial-fetch, do a normal fetch.
1306 */
1307 if (!repository_format_partial_clone && !filter_options.choice)
1308 return;
1309
1310 /*
1311 * If this is the FIRST partial-fetch request, we enable partial
1312 * on this repo and remember the given filter-spec as the default
1313 * for subsequent fetches to this remote.
1314 */
1315 if (!repository_format_partial_clone && filter_options.choice) {
1316 partial_clone_register(remote->name, &filter_options);
1317 return;
1318 }
1319
1320 /*
1321 * We are currently limited to only ONE promisor remote and only
1322 * allow partial-fetches from the promisor remote.
1323 */
1324 if (strcmp(remote->name, repository_format_partial_clone)) {
1325 if (filter_options.choice)
1326 die(_("--filter can only be used with the remote configured in core.partialClone"));
1327 return;
1328 }
1329
1330 /*
1331 * Do a partial-fetch from the promisor remote using either the
1332 * explicitly given filter-spec or inherit the filter-spec from
1333 * the config.
1334 */
1335 if (!filter_options.choice)
1336 partial_clone_get_default_filter_spec(&filter_options);
1337 return;
1338}
1339
1340static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
1341{
1342 static const char **refs = NULL;
1343 struct refspec *refspec;
1344 int ref_nr = 0;
1345 int j = 0;
1346 int exit_code;
1347 int maybe_prune_tags;
1348 int remote_via_config = remote_is_configured(remote, 0);
1349
1350 if (!remote)
1351 die(_("No remote repository specified. Please, specify either a URL or a\n"
1352 "remote name from which new revisions should be fetched."));
1353
1354 gtransport = prepare_transport(remote, 1);
1355
1356 if (prune < 0) {
1357 /* no command line request */
1358 if (0 <= remote->prune)
1359 prune = remote->prune;
1360 else if (0 <= fetch_prune_config)
1361 prune = fetch_prune_config;
1362 else
1363 prune = PRUNE_BY_DEFAULT;
1364 }
1365
1366 if (prune_tags < 0) {
1367 /* no command line request */
1368 if (0 <= remote->prune_tags)
1369 prune_tags = remote->prune_tags;
1370 else if (0 <= fetch_prune_tags_config)
1371 prune_tags = fetch_prune_tags_config;
1372 else
1373 prune_tags = PRUNE_TAGS_BY_DEFAULT;
1374 }
1375
1376 maybe_prune_tags = prune_tags_ok && prune_tags;
1377 if (maybe_prune_tags && remote_via_config)
1378 add_prune_tags_to_fetch_refspec(remote);
1379
1380 if (argc > 0 || (maybe_prune_tags && !remote_via_config)) {
1381 size_t nr_alloc = st_add3(argc, maybe_prune_tags, 1);
1382 refs = xcalloc(nr_alloc, sizeof(const char *));
1383 if (maybe_prune_tags) {
1384 refs[j++] = xstrdup("refs/tags/*:refs/tags/*");
1385 ref_nr++;
1386 }
1387 }
1388
1389 if (argc > 0) {
1390 int i;
1391 for (i = 0; i < argc; i++) {
1392 if (!strcmp(argv[i], "tag")) {
1393 i++;
1394 if (i >= argc)
1395 die(_("You need to specify a tag name."));
1396 refs[j++] = xstrfmt("refs/tags/%s:refs/tags/%s",
1397 argv[i], argv[i]);
1398 } else
1399 refs[j++] = argv[i];
1400 ref_nr++;
1401 }
1402 }
1403
1404 sigchain_push_common(unlock_pack_on_signal);
1405 atexit(unlock_pack);
1406 refspec = parse_fetch_refspec(ref_nr, refs);
1407 exit_code = do_fetch(gtransport, refspec, ref_nr);
1408 free_refspec(ref_nr, refspec);
1409 transport_disconnect(gtransport);
1410 gtransport = NULL;
1411 return exit_code;
1412}
1413
1414int cmd_fetch(int argc, const char **argv, const char *prefix)
1415{
1416 int i;
1417 struct string_list list = STRING_LIST_INIT_DUP;
1418 struct remote *remote = NULL;
1419 int result = 0;
1420 int prune_tags_ok = 1;
1421 struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
1422
1423 packet_trace_identity("fetch");
1424
1425 fetch_if_missing = 0;
1426
1427 /* Record the command line for the reflog */
1428 strbuf_addstr(&default_rla, "fetch");
1429 for (i = 1; i < argc; i++)
1430 strbuf_addf(&default_rla, " %s", argv[i]);
1431
1432 config_from_gitmodules(gitmodules_fetch_config, NULL);
1433 git_config(git_fetch_config, NULL);
1434
1435 argc = parse_options(argc, argv, prefix,
1436 builtin_fetch_options, builtin_fetch_usage, 0);
1437
1438 if (deepen_relative) {
1439 if (deepen_relative < 0)
1440 die(_("Negative depth in --deepen is not supported"));
1441 if (depth)
1442 die(_("--deepen and --depth are mutually exclusive"));
1443 depth = xstrfmt("%d", deepen_relative);
1444 }
1445 if (unshallow) {
1446 if (depth)
1447 die(_("--depth and --unshallow cannot be used together"));
1448 else if (!is_repository_shallow(the_repository))
1449 die(_("--unshallow on a complete repository does not make sense"));
1450 else
1451 depth = xstrfmt("%d", INFINITE_DEPTH);
1452 }
1453
1454 /* no need to be strict, transport_set_option() will validate it again */
1455 if (depth && atoi(depth) < 1)
1456 die(_("depth %s is not a positive number"), depth);
1457 if (depth || deepen_since || deepen_not.nr)
1458 deepen = 1;
1459
1460 if (filter_options.choice && !repository_format_partial_clone)
1461 die("--filter can only be used when extensions.partialClone is set");
1462
1463 if (all) {
1464 if (argc == 1)
1465 die(_("fetch --all does not take a repository argument"));
1466 else if (argc > 1)
1467 die(_("fetch --all does not make sense with refspecs"));
1468 (void) for_each_remote(get_one_remote_for_fetch, &list);
1469 } else if (argc == 0) {
1470 /* No arguments -- use default remote */
1471 remote = remote_get(NULL);
1472 } else if (multiple) {
1473 /* All arguments are assumed to be remotes or groups */
1474 for (i = 0; i < argc; i++)
1475 if (!add_remote_or_group(argv[i], &list))
1476 die(_("No such remote or remote group: %s"), argv[i]);
1477 } else {
1478 /* Single remote or group */
1479 (void) add_remote_or_group(argv[0], &list);
1480 if (list.nr > 1) {
1481 /* More than one remote */
1482 if (argc > 1)
1483 die(_("Fetching a group and specifying refspecs does not make sense"));
1484 } else {
1485 /* Zero or one remotes */
1486 remote = remote_get(argv[0]);
1487 prune_tags_ok = (argc == 1);
1488 argc--;
1489 argv++;
1490 }
1491 }
1492
1493 if (remote) {
1494 if (filter_options.choice || repository_format_partial_clone)
1495 fetch_one_setup_partial(remote);
1496 result = fetch_one(remote, argc, argv, prune_tags_ok);
1497 } else {
1498 if (filter_options.choice)
1499 die(_("--filter can only be used with the remote configured in core.partialClone"));
1500 /* TODO should this also die if we have a previous partial-clone? */
1501 result = fetch_multiple(&list);
1502 }
1503
1504 if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
1505 struct argv_array options = ARGV_ARRAY_INIT;
1506
1507 add_options_to_argv(&options);
1508 result = fetch_populated_submodules(the_repository,
1509 &options,
1510 submodule_prefix,
1511 recurse_submodules,
1512 recurse_submodules_default,
1513 verbosity < 0,
1514 max_children);
1515 argv_array_clear(&options);
1516 }
1517
1518 string_list_clear(&list, 0);
1519
1520 close_all_packs(the_repository->objects);
1521
1522 argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
1523 if (verbosity < 0)
1524 argv_array_push(&argv_gc_auto, "--quiet");
1525 run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
1526 argv_array_clear(&argv_gc_auto);
1527
1528 return result;
1529}