83f36d7cdebdede92274e661d3c97d6b999a8518
[git/git.git] / builtin / fetch.c
1 /*
2 * "git fetch"
3 */
4 #include "cache.h"
5 #include "config.h"
6 #include "repository.h"
7 #include "refs.h"
8 #include "refspec.h"
9 #include "object-store.h"
10 #include "commit.h"
11 #include "builtin.h"
12 #include "string-list.h"
13 #include "remote.h"
14 #include "transport.h"
15 #include "run-command.h"
16 #include "parse-options.h"
17 #include "sigchain.h"
18 #include "submodule-config.h"
19 #include "submodule.h"
20 #include "connected.h"
21 #include "argv-array.h"
22 #include "utf8.h"
23 #include "packfile.h"
24 #include "list-objects-filter-options.h"
25
26 static const char * const builtin_fetch_usage[] = {
27 N_("git fetch [<options>] [<repository> [<refspec>...]]"),
28 N_("git fetch [<options>] <group>"),
29 N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
30 N_("git fetch --all [<options>]"),
31 NULL
32 };
33
34 enum {
35 TAGS_UNSET = 0,
36 TAGS_DEFAULT = 1,
37 TAGS_SET = 2
38 };
39
40 static int fetch_prune_config = -1; /* unspecified */
41 static int prune = -1; /* unspecified */
42 #define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
43
44 static int fetch_prune_tags_config = -1; /* unspecified */
45 static int prune_tags = -1; /* unspecified */
46 #define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
47
48 static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity, deepen_relative;
49 static int progress = -1;
50 static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
51 static int max_children = 1;
52 static enum transport_family family;
53 static const char *depth;
54 static const char *deepen_since;
55 static const char *upload_pack;
56 static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
57 static struct strbuf default_rla = STRBUF_INIT;
58 static struct transport *gtransport;
59 static struct transport *gsecondary;
60 static const char *submodule_prefix = "";
61 static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
62 static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
63 static int shown_url = 0;
64 static struct refspec refmap = REFSPEC_INIT_FETCH;
65 static struct list_objects_filter_options filter_options;
66 static struct string_list server_options = STRING_LIST_INIT_DUP;
67
68 static int git_fetch_config(const char *k, const char *v, void *cb)
69 {
70 if (!strcmp(k, "fetch.prune")) {
71 fetch_prune_config = git_config_bool(k, v);
72 return 0;
73 }
74
75 if (!strcmp(k, "fetch.prunetags")) {
76 fetch_prune_tags_config = git_config_bool(k, v);
77 return 0;
78 }
79
80 if (!strcmp(k, "submodule.recurse")) {
81 int r = git_config_bool(k, v) ?
82 RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
83 recurse_submodules = r;
84 }
85
86 if (!strcmp(k, "submodule.fetchjobs")) {
87 max_children = parse_submodule_fetchjobs(k, v);
88 return 0;
89 } else if (!strcmp(k, "fetch.recursesubmodules")) {
90 recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
91 return 0;
92 }
93
94 return git_default_config(k, v, cb);
95 }
96
97 static int gitmodules_fetch_config(const char *var, const char *value, void *cb)
98 {
99 if (!strcmp(var, "submodule.fetchjobs")) {
100 max_children = parse_submodule_fetchjobs(var, value);
101 return 0;
102 } else if (!strcmp(var, "fetch.recursesubmodules")) {
103 recurse_submodules = parse_fetch_recurse_submodules_arg(var, value);
104 return 0;
105 }
106
107 return 0;
108 }
109
110 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
111 {
112 /*
113 * "git fetch --refmap='' origin foo"
114 * can be used to tell the command not to store anywhere
115 */
116 refspec_append(&refmap, arg);
117
118 return 0;
119 }
120
121 static struct option builtin_fetch_options[] = {
122 OPT__VERBOSITY(&verbosity),
123 OPT_BOOL(0, "all", &all,
124 N_("fetch from all remotes")),
125 OPT_BOOL('a', "append", &append,
126 N_("append to .git/FETCH_HEAD instead of overwriting")),
127 OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
128 N_("path to upload pack on remote end")),
129 OPT__FORCE(&force, N_("force overwrite of local branch"), 0),
130 OPT_BOOL('m', "multiple", &multiple,
131 N_("fetch from multiple remotes")),
132 OPT_SET_INT('t', "tags", &tags,
133 N_("fetch all tags and associated objects"), TAGS_SET),
134 OPT_SET_INT('n', NULL, &tags,
135 N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
136 OPT_INTEGER('j', "jobs", &max_children,
137 N_("number of submodules fetched in parallel")),
138 OPT_BOOL('p', "prune", &prune,
139 N_("prune remote-tracking branches no longer on remote")),
140 OPT_BOOL('P', "prune-tags", &prune_tags,
141 N_("prune local tags no longer on remote and clobber changed tags")),
142 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
143 N_("control recursive fetching of submodules"),
144 PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
145 OPT_BOOL(0, "dry-run", &dry_run,
146 N_("dry run")),
147 OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
148 OPT_BOOL('u', "update-head-ok", &update_head_ok,
149 N_("allow updating of HEAD ref")),
150 OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
151 OPT_STRING(0, "depth", &depth, N_("depth"),
152 N_("deepen history of shallow clone")),
153 OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
154 N_("deepen history of shallow repository based on time")),
155 OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
156 N_("deepen history of shallow clone, excluding rev")),
157 OPT_INTEGER(0, "deepen", &deepen_relative,
158 N_("deepen history of shallow clone")),
159 OPT_SET_INT_F(0, "unshallow", &unshallow,
160 N_("convert to a complete repository"),
161 1, PARSE_OPT_NONEG),
162 { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
163 N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
164 { OPTION_CALLBACK, 0, "recurse-submodules-default",
165 &recurse_submodules_default, N_("on-demand"),
166 N_("default for recursive fetching of submodules "
167 "(lower priority than config files)"),
168 PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules },
169 OPT_BOOL(0, "update-shallow", &update_shallow,
170 N_("accept refs that update .git/shallow")),
171 { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
172 N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
173 OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
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
182 static void unlock_pack(void)
183 {
184 if (gtransport)
185 transport_unlock_pack(gtransport);
186 if (gsecondary)
187 transport_unlock_pack(gsecondary);
188 }
189
190 static void unlock_pack_on_signal(int signo)
191 {
192 unlock_pack();
193 sigchain_pop(signo);
194 raise(signo);
195 }
196
197 static 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_item 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
235 static 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
247 static 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
258 static 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, NULL); 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
342 static struct ref *get_ref_map(struct transport *transport,
343 struct refspec *rs,
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 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
351
352 /* opportunistically-updated references: */
353 struct ref *orefs = NULL, **oref_tail = &orefs;
354
355 const struct ref *remote_refs;
356
357 if (rs->nr)
358 refspec_ref_prefixes(rs, &ref_prefixes);
359 else if (transport->remote && transport->remote->fetch.nr)
360 refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
361
362 if (ref_prefixes.argc &&
363 (tags == TAGS_SET || (tags == TAGS_DEFAULT && !rs->nr))) {
364 argv_array_push(&ref_prefixes, "refs/tags/");
365 }
366
367 remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
368
369 argv_array_clear(&ref_prefixes);
370
371 if (rs->nr) {
372 struct refspec *fetch_refspec;
373
374 for (i = 0; i < rs->nr; i++) {
375 get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
376 if (rs->items[i].dst && rs->items[i].dst[0])
377 *autotags = 1;
378 }
379 /* Merge everything on the command line (but not --tags) */
380 for (rm = ref_map; rm; rm = rm->next)
381 rm->fetch_head_status = FETCH_HEAD_MERGE;
382
383 /*
384 * For any refs that we happen to be fetching via
385 * command-line arguments, the destination ref might
386 * have been missing or have been different than the
387 * remote-tracking ref that would be derived from the
388 * configured refspec. In these cases, we want to
389 * take the opportunity to update their configured
390 * remote-tracking reference. However, we do not want
391 * to mention these entries in FETCH_HEAD at all, as
392 * they would simply be duplicates of existing
393 * entries, so we set them FETCH_HEAD_IGNORE below.
394 *
395 * We compute these entries now, based only on the
396 * refspecs specified on the command line. But we add
397 * them to the list following the refspecs resulting
398 * from the tags option so that one of the latter,
399 * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
400 * by ref_remove_duplicates() in favor of one of these
401 * opportunistic entries with FETCH_HEAD_IGNORE.
402 */
403 if (refmap.nr)
404 fetch_refspec = &refmap;
405 else
406 fetch_refspec = &transport->remote->fetch;
407
408 for (i = 0; i < fetch_refspec->nr; i++)
409 get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
410 } else if (refmap.nr) {
411 die("--refmap option is only meaningful with command-line refspec(s).");
412 } else {
413 /* Use the defaults */
414 struct remote *remote = transport->remote;
415 struct branch *branch = branch_get(NULL);
416 int has_merge = branch_has_merge_config(branch);
417 if (remote &&
418 (remote->fetch.nr ||
419 /* Note: has_merge implies non-NULL branch->remote_name */
420 (has_merge && !strcmp(branch->remote_name, remote->name)))) {
421 for (i = 0; i < remote->fetch.nr; i++) {
422 get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
423 if (remote->fetch.items[i].dst &&
424 remote->fetch.items[i].dst[0])
425 *autotags = 1;
426 if (!i && !has_merge && ref_map &&
427 !remote->fetch.items[0].pattern)
428 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
429 }
430 /*
431 * if the remote we're fetching from is the same
432 * as given in branch.<name>.remote, we add the
433 * ref given in branch.<name>.merge, too.
434 *
435 * Note: has_merge implies non-NULL branch->remote_name
436 */
437 if (has_merge &&
438 !strcmp(branch->remote_name, remote->name))
439 add_merge_config(&ref_map, remote_refs, branch, &tail);
440 } else {
441 ref_map = get_remote_ref(remote_refs, "HEAD");
442 if (!ref_map)
443 die(_("Couldn't find remote ref HEAD"));
444 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
445 tail = &ref_map->next;
446 }
447 }
448
449 if (tags == TAGS_SET)
450 /* also fetch all tags */
451 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
452 else if (tags == TAGS_DEFAULT && *autotags)
453 find_non_local_tags(transport, &ref_map, &tail);
454
455 /* Now append any refs to be updated opportunistically: */
456 *tail = orefs;
457 for (rm = orefs; rm; rm = rm->next) {
458 rm->fetch_head_status = FETCH_HEAD_IGNORE;
459 tail = &rm->next;
460 }
461
462 return ref_remove_duplicates(ref_map);
463 }
464
465 #define STORE_REF_ERROR_OTHER 1
466 #define STORE_REF_ERROR_DF_CONFLICT 2
467
468 static int s_update_ref(const char *action,
469 struct ref *ref,
470 int check_old)
471 {
472 char *msg;
473 char *rla = getenv("GIT_REFLOG_ACTION");
474 struct ref_transaction *transaction;
475 struct strbuf err = STRBUF_INIT;
476 int ret, df_conflict = 0;
477
478 if (dry_run)
479 return 0;
480 if (!rla)
481 rla = default_rla.buf;
482 msg = xstrfmt("%s: %s", rla, action);
483
484 transaction = ref_transaction_begin(&err);
485 if (!transaction ||
486 ref_transaction_update(transaction, ref->name,
487 &ref->new_oid,
488 check_old ? &ref->old_oid : NULL,
489 0, msg, &err))
490 goto fail;
491
492 ret = ref_transaction_commit(transaction, &err);
493 if (ret) {
494 df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
495 goto fail;
496 }
497
498 ref_transaction_free(transaction);
499 strbuf_release(&err);
500 free(msg);
501 return 0;
502 fail:
503 ref_transaction_free(transaction);
504 error("%s", err.buf);
505 strbuf_release(&err);
506 free(msg);
507 return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
508 : STORE_REF_ERROR_OTHER;
509 }
510
511 static int refcol_width = 10;
512 static int compact_format;
513
514 static void adjust_refcol_width(const struct ref *ref)
515 {
516 int max, rlen, llen, len;
517
518 /* uptodate lines are only shown on high verbosity level */
519 if (!verbosity && !oidcmp(&ref->peer_ref->old_oid, &ref->old_oid))
520 return;
521
522 max = term_columns();
523 rlen = utf8_strwidth(prettify_refname(ref->name));
524
525 llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
526
527 /*
528 * rough estimation to see if the output line is too long and
529 * should not be counted (we can't do precise calculation
530 * anyway because we don't know if the error explanation part
531 * will be printed in update_local_ref)
532 */
533 if (compact_format) {
534 llen = 0;
535 max = max * 2 / 3;
536 }
537 len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
538 if (len >= max)
539 return;
540
541 /*
542 * Not precise calculation for compact mode because '*' can
543 * appear on the left hand side of '->' and shrink the column
544 * back.
545 */
546 if (refcol_width < rlen)
547 refcol_width = rlen;
548 }
549
550 static void prepare_format_display(struct ref *ref_map)
551 {
552 struct ref *rm;
553 const char *format = "full";
554
555 git_config_get_string_const("fetch.output", &format);
556 if (!strcasecmp(format, "full"))
557 compact_format = 0;
558 else if (!strcasecmp(format, "compact"))
559 compact_format = 1;
560 else
561 die(_("configuration fetch.output contains invalid value %s"),
562 format);
563
564 for (rm = ref_map; rm; rm = rm->next) {
565 if (rm->status == REF_STATUS_REJECT_SHALLOW ||
566 !rm->peer_ref ||
567 !strcmp(rm->name, "HEAD"))
568 continue;
569
570 adjust_refcol_width(rm);
571 }
572 }
573
574 static void print_remote_to_local(struct strbuf *display,
575 const char *remote, const char *local)
576 {
577 strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
578 }
579
580 static int find_and_replace(struct strbuf *haystack,
581 const char *needle,
582 const char *placeholder)
583 {
584 const char *p = strstr(haystack->buf, needle);
585 int plen, nlen;
586
587 if (!p)
588 return 0;
589
590 if (p > haystack->buf && p[-1] != '/')
591 return 0;
592
593 plen = strlen(p);
594 nlen = strlen(needle);
595 if (plen > nlen && p[nlen] != '/')
596 return 0;
597
598 strbuf_splice(haystack, p - haystack->buf, nlen,
599 placeholder, strlen(placeholder));
600 return 1;
601 }
602
603 static void print_compact(struct strbuf *display,
604 const char *remote, const char *local)
605 {
606 struct strbuf r = STRBUF_INIT;
607 struct strbuf l = STRBUF_INIT;
608
609 if (!strcmp(remote, local)) {
610 strbuf_addf(display, "%-*s -> *", refcol_width, remote);
611 return;
612 }
613
614 strbuf_addstr(&r, remote);
615 strbuf_addstr(&l, local);
616
617 if (!find_and_replace(&r, local, "*"))
618 find_and_replace(&l, remote, "*");
619 print_remote_to_local(display, r.buf, l.buf);
620
621 strbuf_release(&r);
622 strbuf_release(&l);
623 }
624
625 static void format_display(struct strbuf *display, char code,
626 const char *summary, const char *error,
627 const char *remote, const char *local,
628 int summary_width)
629 {
630 int width = (summary_width + strlen(summary) - gettext_width(summary));
631
632 strbuf_addf(display, "%c %-*s ", code, width, summary);
633 if (!compact_format)
634 print_remote_to_local(display, remote, local);
635 else
636 print_compact(display, remote, local);
637 if (error)
638 strbuf_addf(display, " (%s)", error);
639 }
640
641 static int update_local_ref(struct ref *ref,
642 const char *remote,
643 const struct ref *remote_ref,
644 struct strbuf *display,
645 int summary_width)
646 {
647 struct commit *current = NULL, *updated;
648 enum object_type type;
649 struct branch *current_branch = branch_get(NULL);
650 const char *pretty_ref = prettify_refname(ref->name);
651
652 type = oid_object_info(the_repository, &ref->new_oid, NULL);
653 if (type < 0)
654 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
655
656 if (!oidcmp(&ref->old_oid, &ref->new_oid)) {
657 if (verbosity > 0)
658 format_display(display, '=', _("[up to date]"), NULL,
659 remote, pretty_ref, summary_width);
660 return 0;
661 }
662
663 if (current_branch &&
664 !strcmp(ref->name, current_branch->name) &&
665 !(update_head_ok || is_bare_repository()) &&
666 !is_null_oid(&ref->old_oid)) {
667 /*
668 * If this is the head, and it's not okay to update
669 * the head, and the old value of the head isn't empty...
670 */
671 format_display(display, '!', _("[rejected]"),
672 _("can't fetch in current branch"),
673 remote, pretty_ref, summary_width);
674 return 1;
675 }
676
677 if (!is_null_oid(&ref->old_oid) &&
678 starts_with(ref->name, "refs/tags/")) {
679 int r;
680 r = s_update_ref("updating tag", ref, 0);
681 format_display(display, r ? '!' : 't', _("[tag update]"),
682 r ? _("unable to update local ref") : NULL,
683 remote, pretty_ref, summary_width);
684 return r;
685 }
686
687 current = lookup_commit_reference_gently(&ref->old_oid, 1);
688 updated = lookup_commit_reference_gently(&ref->new_oid, 1);
689 if (!current || !updated) {
690 const char *msg;
691 const char *what;
692 int r;
693 /*
694 * Nicely describe the new ref we're fetching.
695 * Base this on the remote's ref name, as it's
696 * more likely to follow a standard layout.
697 */
698 const char *name = remote_ref ? remote_ref->name : "";
699 if (starts_with(name, "refs/tags/")) {
700 msg = "storing tag";
701 what = _("[new tag]");
702 } else if (starts_with(name, "refs/heads/")) {
703 msg = "storing head";
704 what = _("[new branch]");
705 } else {
706 msg = "storing ref";
707 what = _("[new ref]");
708 }
709
710 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
711 (recurse_submodules != RECURSE_SUBMODULES_ON))
712 check_for_new_submodule_commits(&ref->new_oid);
713 r = s_update_ref(msg, ref, 0);
714 format_display(display, r ? '!' : '*', what,
715 r ? _("unable to update local ref") : NULL,
716 remote, pretty_ref, summary_width);
717 return r;
718 }
719
720 if (in_merge_bases(current, updated)) {
721 struct strbuf quickref = STRBUF_INIT;
722 int r;
723 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
724 strbuf_addstr(&quickref, "..");
725 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
726 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
727 (recurse_submodules != RECURSE_SUBMODULES_ON))
728 check_for_new_submodule_commits(&ref->new_oid);
729 r = s_update_ref("fast-forward", ref, 1);
730 format_display(display, r ? '!' : ' ', quickref.buf,
731 r ? _("unable to update local ref") : NULL,
732 remote, pretty_ref, summary_width);
733 strbuf_release(&quickref);
734 return r;
735 } else if (force || ref->force) {
736 struct strbuf quickref = STRBUF_INIT;
737 int r;
738 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
739 strbuf_addstr(&quickref, "...");
740 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
741 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
742 (recurse_submodules != RECURSE_SUBMODULES_ON))
743 check_for_new_submodule_commits(&ref->new_oid);
744 r = s_update_ref("forced-update", ref, 1);
745 format_display(display, r ? '!' : '+', quickref.buf,
746 r ? _("unable to update local ref") : _("forced update"),
747 remote, pretty_ref, summary_width);
748 strbuf_release(&quickref);
749 return r;
750 } else {
751 format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
752 remote, pretty_ref, summary_width);
753 return 1;
754 }
755 }
756
757 static int iterate_ref_map(void *cb_data, struct object_id *oid)
758 {
759 struct ref **rm = cb_data;
760 struct ref *ref = *rm;
761
762 while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
763 ref = ref->next;
764 if (!ref)
765 return -1; /* end of the list */
766 *rm = ref->next;
767 oidcpy(oid, &ref->old_oid);
768 return 0;
769 }
770
771 static int store_updated_refs(const char *raw_url, const char *remote_name,
772 struct ref *ref_map)
773 {
774 FILE *fp;
775 struct commit *commit;
776 int url_len, i, rc = 0;
777 struct strbuf note = STRBUF_INIT;
778 const char *what, *kind;
779 struct ref *rm;
780 char *url;
781 const char *filename = dry_run ? "/dev/null" : git_path_fetch_head(the_repository);
782 int want_status;
783 int summary_width = transport_summary_width(ref_map);
784
785 fp = fopen(filename, "a");
786 if (!fp)
787 return error_errno(_("cannot open %s"), filename);
788
789 if (raw_url)
790 url = transport_anonymize_url(raw_url);
791 else
792 url = xstrdup("foreign");
793
794 rm = ref_map;
795 if (check_connected(iterate_ref_map, &rm, NULL)) {
796 rc = error(_("%s did not send all necessary objects\n"), url);
797 goto abort;
798 }
799
800 prepare_format_display(ref_map);
801
802 /*
803 * We do a pass for each fetch_head_status type in their enum order, so
804 * merged entries are written before not-for-merge. That lets readers
805 * use FETCH_HEAD as a refname to refer to the ref to be merged.
806 */
807 for (want_status = FETCH_HEAD_MERGE;
808 want_status <= FETCH_HEAD_IGNORE;
809 want_status++) {
810 for (rm = ref_map; rm; rm = rm->next) {
811 struct ref *ref = NULL;
812 const char *merge_status_marker = "";
813
814 if (rm->status == REF_STATUS_REJECT_SHALLOW) {
815 if (want_status == FETCH_HEAD_MERGE)
816 warning(_("reject %s because shallow roots are not allowed to be updated"),
817 rm->peer_ref ? rm->peer_ref->name : rm->name);
818 continue;
819 }
820
821 commit = lookup_commit_reference_gently(&rm->old_oid,
822 1);
823 if (!commit)
824 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
825
826 if (rm->fetch_head_status != want_status)
827 continue;
828
829 if (rm->peer_ref) {
830 ref = alloc_ref(rm->peer_ref->name);
831 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
832 oidcpy(&ref->new_oid, &rm->old_oid);
833 ref->force = rm->peer_ref->force;
834 }
835
836
837 if (!strcmp(rm->name, "HEAD")) {
838 kind = "";
839 what = "";
840 }
841 else if (starts_with(rm->name, "refs/heads/")) {
842 kind = "branch";
843 what = rm->name + 11;
844 }
845 else if (starts_with(rm->name, "refs/tags/")) {
846 kind = "tag";
847 what = rm->name + 10;
848 }
849 else if (starts_with(rm->name, "refs/remotes/")) {
850 kind = "remote-tracking branch";
851 what = rm->name + 13;
852 }
853 else {
854 kind = "";
855 what = rm->name;
856 }
857
858 url_len = strlen(url);
859 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
860 ;
861 url_len = i + 1;
862 if (4 < i && !strncmp(".git", url + i - 3, 4))
863 url_len = i - 3;
864
865 strbuf_reset(&note);
866 if (*what) {
867 if (*kind)
868 strbuf_addf(&note, "%s ", kind);
869 strbuf_addf(&note, "'%s' of ", what);
870 }
871 switch (rm->fetch_head_status) {
872 case FETCH_HEAD_NOT_FOR_MERGE:
873 merge_status_marker = "not-for-merge";
874 /* fall-through */
875 case FETCH_HEAD_MERGE:
876 fprintf(fp, "%s\t%s\t%s",
877 oid_to_hex(&rm->old_oid),
878 merge_status_marker,
879 note.buf);
880 for (i = 0; i < url_len; ++i)
881 if ('\n' == url[i])
882 fputs("\\n", fp);
883 else
884 fputc(url[i], fp);
885 fputc('\n', fp);
886 break;
887 default:
888 /* do not write anything to FETCH_HEAD */
889 break;
890 }
891
892 strbuf_reset(&note);
893 if (ref) {
894 rc |= update_local_ref(ref, what, rm, &note,
895 summary_width);
896 free(ref);
897 } else
898 format_display(&note, '*',
899 *kind ? kind : "branch", NULL,
900 *what ? what : "HEAD",
901 "FETCH_HEAD", summary_width);
902 if (note.len) {
903 if (verbosity >= 0 && !shown_url) {
904 fprintf(stderr, _("From %.*s\n"),
905 url_len, url);
906 shown_url = 1;
907 }
908 if (verbosity >= 0)
909 fprintf(stderr, " %s\n", note.buf);
910 }
911 }
912 }
913
914 if (rc & STORE_REF_ERROR_DF_CONFLICT)
915 error(_("some local refs could not be updated; try running\n"
916 " 'git remote prune %s' to remove any old, conflicting "
917 "branches"), remote_name);
918
919 abort:
920 strbuf_release(&note);
921 free(url);
922 fclose(fp);
923 return rc;
924 }
925
926 /*
927 * We would want to bypass the object transfer altogether if
928 * everything we are going to fetch already exists and is connected
929 * locally.
930 */
931 static int quickfetch(struct ref *ref_map)
932 {
933 struct ref *rm = ref_map;
934 struct check_connected_options opt = CHECK_CONNECTED_INIT;
935
936 /*
937 * If we are deepening a shallow clone we already have these
938 * objects reachable. Running rev-list here will return with
939 * a good (0) exit status and we'll bypass the fetch that we
940 * really need to perform. Claiming failure now will ensure
941 * we perform the network exchange to deepen our history.
942 */
943 if (deepen)
944 return -1;
945 opt.quiet = 1;
946 return check_connected(iterate_ref_map, &rm, &opt);
947 }
948
949 static int fetch_refs(struct transport *transport, struct ref *ref_map)
950 {
951 int ret = quickfetch(ref_map);
952 if (ret)
953 ret = transport_fetch_refs(transport, ref_map);
954 if (!ret)
955 ret |= store_updated_refs(transport->url,
956 transport->remote->name,
957 ref_map);
958 transport_unlock_pack(transport);
959 return ret;
960 }
961
962 static int prune_refs(struct refspec *rs, struct ref *ref_map,
963 const char *raw_url)
964 {
965 int url_len, i, result = 0;
966 struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
967 char *url;
968 int summary_width = transport_summary_width(stale_refs);
969 const char *dangling_msg = dry_run
970 ? _(" (%s will become dangling)")
971 : _(" (%s has become dangling)");
972
973 if (raw_url)
974 url = transport_anonymize_url(raw_url);
975 else
976 url = xstrdup("foreign");
977
978 url_len = strlen(url);
979 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
980 ;
981
982 url_len = i + 1;
983 if (4 < i && !strncmp(".git", url + i - 3, 4))
984 url_len = i - 3;
985
986 if (!dry_run) {
987 struct string_list refnames = STRING_LIST_INIT_NODUP;
988
989 for (ref = stale_refs; ref; ref = ref->next)
990 string_list_append(&refnames, ref->name);
991
992 result = delete_refs("fetch: prune", &refnames, 0);
993 string_list_clear(&refnames, 0);
994 }
995
996 if (verbosity >= 0) {
997 for (ref = stale_refs; ref; ref = ref->next) {
998 struct strbuf sb = STRBUF_INIT;
999 if (!shown_url) {
1000 fprintf(stderr, _("From %.*s\n"), url_len, url);
1001 shown_url = 1;
1002 }
1003 format_display(&sb, '-', _("[deleted]"), NULL,
1004 _("(none)"), prettify_refname(ref->name),
1005 summary_width);
1006 fprintf(stderr, " %s\n",sb.buf);
1007 strbuf_release(&sb);
1008 warn_dangling_symref(stderr, dangling_msg, ref->name);
1009 }
1010 }
1011
1012 free(url);
1013 free_refs(stale_refs);
1014 return result;
1015 }
1016
1017 static void check_not_current_branch(struct ref *ref_map)
1018 {
1019 struct branch *current_branch = branch_get(NULL);
1020
1021 if (is_bare_repository() || !current_branch)
1022 return;
1023
1024 for (; ref_map; ref_map = ref_map->next)
1025 if (ref_map->peer_ref && !strcmp(current_branch->refname,
1026 ref_map->peer_ref->name))
1027 die(_("Refusing to fetch into current branch %s "
1028 "of non-bare repository"), current_branch->refname);
1029 }
1030
1031 static int truncate_fetch_head(void)
1032 {
1033 const char *filename = git_path_fetch_head(the_repository);
1034 FILE *fp = fopen_for_writing(filename);
1035
1036 if (!fp)
1037 return error_errno(_("cannot open %s"), filename);
1038 fclose(fp);
1039 return 0;
1040 }
1041
1042 static void set_option(struct transport *transport, const char *name, const char *value)
1043 {
1044 int r = transport_set_option(transport, name, value);
1045 if (r < 0)
1046 die(_("Option \"%s\" value \"%s\" is not valid for %s"),
1047 name, value, transport->url);
1048 if (r > 0)
1049 warning(_("Option \"%s\" is ignored for %s\n"),
1050 name, transport->url);
1051 }
1052
1053 static struct transport *prepare_transport(struct remote *remote, int deepen)
1054 {
1055 struct transport *transport;
1056 transport = transport_get(remote, NULL);
1057 transport_set_verbosity(transport, verbosity, progress);
1058 transport->family = family;
1059 if (upload_pack)
1060 set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
1061 if (keep)
1062 set_option(transport, TRANS_OPT_KEEP, "yes");
1063 if (depth)
1064 set_option(transport, TRANS_OPT_DEPTH, depth);
1065 if (deepen && deepen_since)
1066 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
1067 if (deepen && deepen_not.nr)
1068 set_option(transport, TRANS_OPT_DEEPEN_NOT,
1069 (const char *)&deepen_not);
1070 if (deepen_relative)
1071 set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
1072 if (update_shallow)
1073 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
1074 if (filter_options.choice) {
1075 set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
1076 filter_options.filter_spec);
1077 set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
1078 }
1079 return transport;
1080 }
1081
1082 static void backfill_tags(struct transport *transport, struct ref *ref_map)
1083 {
1084 int cannot_reuse;
1085
1086 /*
1087 * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
1088 * when remote helper is used (setting it to an empty string
1089 * is not unsetting). We could extend the remote helper
1090 * protocol for that, but for now, just force a new connection
1091 * without deepen-since. Similar story for deepen-not.
1092 */
1093 cannot_reuse = transport->cannot_reuse ||
1094 deepen_since || deepen_not.nr;
1095 if (cannot_reuse) {
1096 gsecondary = prepare_transport(transport->remote, 0);
1097 transport = gsecondary;
1098 }
1099
1100 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
1101 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
1102 transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
1103 fetch_refs(transport, ref_map);
1104
1105 if (gsecondary) {
1106 transport_disconnect(gsecondary);
1107 gsecondary = NULL;
1108 }
1109 }
1110
1111 static int do_fetch(struct transport *transport,
1112 struct refspec *rs)
1113 {
1114 struct string_list existing_refs = STRING_LIST_INIT_DUP;
1115 struct ref *ref_map;
1116 struct ref *rm;
1117 int autotags = (transport->remote->fetch_tags == 1);
1118 int retcode = 0;
1119
1120 for_each_ref(add_existing, &existing_refs);
1121
1122 if (tags == TAGS_DEFAULT) {
1123 if (transport->remote->fetch_tags == 2)
1124 tags = TAGS_SET;
1125 if (transport->remote->fetch_tags == -1)
1126 tags = TAGS_UNSET;
1127 }
1128
1129 /* if not appending, truncate FETCH_HEAD */
1130 if (!append && !dry_run) {
1131 retcode = truncate_fetch_head();
1132 if (retcode)
1133 goto cleanup;
1134 }
1135
1136 ref_map = get_ref_map(transport, rs, tags, &autotags);
1137 if (!update_head_ok)
1138 check_not_current_branch(ref_map);
1139
1140 for (rm = ref_map; rm; rm = rm->next) {
1141 if (rm->peer_ref) {
1142 struct string_list_item *peer_item =
1143 string_list_lookup(&existing_refs,
1144 rm->peer_ref->name);
1145 if (peer_item) {
1146 struct object_id *old_oid = peer_item->util;
1147 oidcpy(&rm->peer_ref->old_oid, old_oid);
1148 }
1149 }
1150 }
1151
1152 if (tags == TAGS_DEFAULT && autotags)
1153 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
1154 if (prune) {
1155 /*
1156 * We only prune based on refspecs specified
1157 * explicitly (via command line or configuration); we
1158 * don't care whether --tags was specified.
1159 */
1160 if (rs->nr) {
1161 prune_refs(rs, ref_map, transport->url);
1162 } else {
1163 prune_refs(&transport->remote->fetch,
1164 ref_map,
1165 transport->url);
1166 }
1167 }
1168 if (fetch_refs(transport, ref_map)) {
1169 free_refs(ref_map);
1170 retcode = 1;
1171 goto cleanup;
1172 }
1173 free_refs(ref_map);
1174
1175 /* if neither --no-tags nor --tags was specified, do automated tag
1176 * following ... */
1177 if (tags == TAGS_DEFAULT && autotags) {
1178 struct ref **tail = &ref_map;
1179 ref_map = NULL;
1180 find_non_local_tags(transport, &ref_map, &tail);
1181 if (ref_map)
1182 backfill_tags(transport, ref_map);
1183 free_refs(ref_map);
1184 }
1185
1186 cleanup:
1187 string_list_clear(&existing_refs, 1);
1188 return retcode;
1189 }
1190
1191 static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1192 {
1193 struct string_list *list = priv;
1194 if (!remote->skip_default_update)
1195 string_list_append(list, remote->name);
1196 return 0;
1197 }
1198
1199 struct remote_group_data {
1200 const char *name;
1201 struct string_list *list;
1202 };
1203
1204 static int get_remote_group(const char *key, const char *value, void *priv)
1205 {
1206 struct remote_group_data *g = priv;
1207
1208 if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
1209 /* split list by white space */
1210 while (*value) {
1211 size_t wordlen = strcspn(value, " \t\n");
1212
1213 if (wordlen >= 1)
1214 string_list_append_nodup(g->list,
1215 xstrndup(value, wordlen));
1216 value += wordlen + (value[wordlen] != '\0');
1217 }
1218 }
1219
1220 return 0;
1221 }
1222
1223 static int add_remote_or_group(const char *name, struct string_list *list)
1224 {
1225 int prev_nr = list->nr;
1226 struct remote_group_data g;
1227 g.name = name; g.list = list;
1228
1229 git_config(get_remote_group, &g);
1230 if (list->nr == prev_nr) {
1231 struct remote *remote = remote_get(name);
1232 if (!remote_is_configured(remote, 0))
1233 return 0;
1234 string_list_append(list, remote->name);
1235 }
1236 return 1;
1237 }
1238
1239 static void add_options_to_argv(struct argv_array *argv)
1240 {
1241 if (dry_run)
1242 argv_array_push(argv, "--dry-run");
1243 if (prune != -1)
1244 argv_array_push(argv, prune ? "--prune" : "--no-prune");
1245 if (prune_tags != -1)
1246 argv_array_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
1247 if (update_head_ok)
1248 argv_array_push(argv, "--update-head-ok");
1249 if (force)
1250 argv_array_push(argv, "--force");
1251 if (keep)
1252 argv_array_push(argv, "--keep");
1253 if (recurse_submodules == RECURSE_SUBMODULES_ON)
1254 argv_array_push(argv, "--recurse-submodules");
1255 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
1256 argv_array_push(argv, "--recurse-submodules=on-demand");
1257 if (tags == TAGS_SET)
1258 argv_array_push(argv, "--tags");
1259 else if (tags == TAGS_UNSET)
1260 argv_array_push(argv, "--no-tags");
1261 if (verbosity >= 2)
1262 argv_array_push(argv, "-v");
1263 if (verbosity >= 1)
1264 argv_array_push(argv, "-v");
1265 else if (verbosity < 0)
1266 argv_array_push(argv, "-q");
1267
1268 }
1269
1270 static int fetch_multiple(struct string_list *list)
1271 {
1272 int i, result = 0;
1273 struct argv_array argv = ARGV_ARRAY_INIT;
1274
1275 if (!append && !dry_run) {
1276 int errcode = truncate_fetch_head();
1277 if (errcode)
1278 return errcode;
1279 }
1280
1281 argv_array_pushl(&argv, "fetch", "--append", NULL);
1282 add_options_to_argv(&argv);
1283
1284 for (i = 0; i < list->nr; i++) {
1285 const char *name = list->items[i].string;
1286 argv_array_push(&argv, name);
1287 if (verbosity >= 0)
1288 printf(_("Fetching %s\n"), name);
1289 if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
1290 error(_("Could not fetch %s"), name);
1291 result = 1;
1292 }
1293 argv_array_pop(&argv);
1294 }
1295
1296 argv_array_clear(&argv);
1297 return result;
1298 }
1299
1300 /*
1301 * Fetching from the promisor remote should use the given filter-spec
1302 * or inherit the default filter-spec from the config.
1303 */
1304 static inline void fetch_one_setup_partial(struct remote *remote)
1305 {
1306 /*
1307 * Explicit --no-filter argument overrides everything, regardless
1308 * of any prior partial clones and fetches.
1309 */
1310 if (filter_options.no_filter)
1311 return;
1312
1313 /*
1314 * If no prior partial clone/fetch and the current fetch DID NOT
1315 * request a partial-fetch, do a normal fetch.
1316 */
1317 if (!repository_format_partial_clone && !filter_options.choice)
1318 return;
1319
1320 /*
1321 * If this is the FIRST partial-fetch request, we enable partial
1322 * on this repo and remember the given filter-spec as the default
1323 * for subsequent fetches to this remote.
1324 */
1325 if (!repository_format_partial_clone && filter_options.choice) {
1326 partial_clone_register(remote->name, &filter_options);
1327 return;
1328 }
1329
1330 /*
1331 * We are currently limited to only ONE promisor remote and only
1332 * allow partial-fetches from the promisor remote.
1333 */
1334 if (strcmp(remote->name, repository_format_partial_clone)) {
1335 if (filter_options.choice)
1336 die(_("--filter can only be used with the remote configured in core.partialClone"));
1337 return;
1338 }
1339
1340 /*
1341 * Do a partial-fetch from the promisor remote using either the
1342 * explicitly given filter-spec or inherit the filter-spec from
1343 * the config.
1344 */
1345 if (!filter_options.choice)
1346 partial_clone_get_default_filter_spec(&filter_options);
1347 return;
1348 }
1349
1350 static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
1351 {
1352 struct refspec rs = REFSPEC_INIT_FETCH;
1353 int i;
1354 int exit_code;
1355 int maybe_prune_tags;
1356 int remote_via_config = remote_is_configured(remote, 0);
1357
1358 if (!remote)
1359 die(_("No remote repository specified. Please, specify either a URL or a\n"
1360 "remote name from which new revisions should be fetched."));
1361
1362 gtransport = prepare_transport(remote, 1);
1363
1364 if (prune < 0) {
1365 /* no command line request */
1366 if (0 <= remote->prune)
1367 prune = remote->prune;
1368 else if (0 <= fetch_prune_config)
1369 prune = fetch_prune_config;
1370 else
1371 prune = PRUNE_BY_DEFAULT;
1372 }
1373
1374 if (prune_tags < 0) {
1375 /* no command line request */
1376 if (0 <= remote->prune_tags)
1377 prune_tags = remote->prune_tags;
1378 else if (0 <= fetch_prune_tags_config)
1379 prune_tags = fetch_prune_tags_config;
1380 else
1381 prune_tags = PRUNE_TAGS_BY_DEFAULT;
1382 }
1383
1384 maybe_prune_tags = prune_tags_ok && prune_tags;
1385 if (maybe_prune_tags && remote_via_config)
1386 refspec_append(&remote->fetch, TAG_REFSPEC);
1387
1388 if (maybe_prune_tags && (argc || !remote_via_config))
1389 refspec_append(&rs, TAG_REFSPEC);
1390
1391 for (i = 0; i < argc; i++) {
1392 if (!strcmp(argv[i], "tag")) {
1393 char *tag;
1394 i++;
1395 if (i >= argc)
1396 die(_("You need to specify a tag name."));
1397
1398 tag = xstrfmt("refs/tags/%s:refs/tags/%s",
1399 argv[i], argv[i]);
1400 refspec_append(&rs, tag);
1401 free(tag);
1402 } else {
1403 refspec_append(&rs, argv[i]);
1404 }
1405 }
1406
1407 if (server_options.nr)
1408 gtransport->server_options = &server_options;
1409
1410 sigchain_push_common(unlock_pack_on_signal);
1411 atexit(unlock_pack);
1412 exit_code = do_fetch(gtransport, &rs);
1413 refspec_clear(&rs);
1414 transport_disconnect(gtransport);
1415 gtransport = NULL;
1416 return exit_code;
1417 }
1418
1419 int cmd_fetch(int argc, const char **argv, const char *prefix)
1420 {
1421 int i;
1422 struct string_list list = STRING_LIST_INIT_DUP;
1423 struct remote *remote = NULL;
1424 int result = 0;
1425 int prune_tags_ok = 1;
1426 struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
1427
1428 packet_trace_identity("fetch");
1429
1430 fetch_if_missing = 0;
1431
1432 /* Record the command line for the reflog */
1433 strbuf_addstr(&default_rla, "fetch");
1434 for (i = 1; i < argc; i++)
1435 strbuf_addf(&default_rla, " %s", argv[i]);
1436
1437 config_from_gitmodules(gitmodules_fetch_config, NULL);
1438 git_config(git_fetch_config, NULL);
1439
1440 argc = parse_options(argc, argv, prefix,
1441 builtin_fetch_options, builtin_fetch_usage, 0);
1442
1443 if (deepen_relative) {
1444 if (deepen_relative < 0)
1445 die(_("Negative depth in --deepen is not supported"));
1446 if (depth)
1447 die(_("--deepen and --depth are mutually exclusive"));
1448 depth = xstrfmt("%d", deepen_relative);
1449 }
1450 if (unshallow) {
1451 if (depth)
1452 die(_("--depth and --unshallow cannot be used together"));
1453 else if (!is_repository_shallow(the_repository))
1454 die(_("--unshallow on a complete repository does not make sense"));
1455 else
1456 depth = xstrfmt("%d", INFINITE_DEPTH);
1457 }
1458
1459 /* no need to be strict, transport_set_option() will validate it again */
1460 if (depth && atoi(depth) < 1)
1461 die(_("depth %s is not a positive number"), depth);
1462 if (depth || deepen_since || deepen_not.nr)
1463 deepen = 1;
1464
1465 if (filter_options.choice && !repository_format_partial_clone)
1466 die("--filter can only be used when extensions.partialClone is set");
1467
1468 if (all) {
1469 if (argc == 1)
1470 die(_("fetch --all does not take a repository argument"));
1471 else if (argc > 1)
1472 die(_("fetch --all does not make sense with refspecs"));
1473 (void) for_each_remote(get_one_remote_for_fetch, &list);
1474 } else if (argc == 0) {
1475 /* No arguments -- use default remote */
1476 remote = remote_get(NULL);
1477 } else if (multiple) {
1478 /* All arguments are assumed to be remotes or groups */
1479 for (i = 0; i < argc; i++)
1480 if (!add_remote_or_group(argv[i], &list))
1481 die(_("No such remote or remote group: %s"), argv[i]);
1482 } else {
1483 /* Single remote or group */
1484 (void) add_remote_or_group(argv[0], &list);
1485 if (list.nr > 1) {
1486 /* More than one remote */
1487 if (argc > 1)
1488 die(_("Fetching a group and specifying refspecs does not make sense"));
1489 } else {
1490 /* Zero or one remotes */
1491 remote = remote_get(argv[0]);
1492 prune_tags_ok = (argc == 1);
1493 argc--;
1494 argv++;
1495 }
1496 }
1497
1498 if (remote) {
1499 if (filter_options.choice || repository_format_partial_clone)
1500 fetch_one_setup_partial(remote);
1501 result = fetch_one(remote, argc, argv, prune_tags_ok);
1502 } else {
1503 if (filter_options.choice)
1504 die(_("--filter can only be used with the remote configured in core.partialClone"));
1505 /* TODO should this also die if we have a previous partial-clone? */
1506 result = fetch_multiple(&list);
1507 }
1508
1509 if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
1510 struct argv_array options = ARGV_ARRAY_INIT;
1511
1512 add_options_to_argv(&options);
1513 result = fetch_populated_submodules(the_repository,
1514 &options,
1515 submodule_prefix,
1516 recurse_submodules,
1517 recurse_submodules_default,
1518 verbosity < 0,
1519 max_children);
1520 argv_array_clear(&options);
1521 }
1522
1523 string_list_clear(&list, 0);
1524
1525 close_all_packs(the_repository->objects);
1526
1527 argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
1528 if (verbosity < 0)
1529 argv_array_push(&argv_gc_auto, "--quiet");
1530 run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
1531 argv_array_clear(&argv_gc_auto);
1532
1533 return result;
1534 }