]> git.ipfire.org Git - thirdparty/git.git/blob - builtin/fetch.c
Merge branch 'cb/xdiff-no-system-includes-in-dot-c' into maint
[thirdparty/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 #include "commit-reach.h"
26
27 static const char * const builtin_fetch_usage[] = {
28 N_("git fetch [<options>] [<repository> [<refspec>...]]"),
29 N_("git fetch [<options>] <group>"),
30 N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
31 N_("git fetch --all [<options>]"),
32 NULL
33 };
34
35 enum {
36 TAGS_UNSET = 0,
37 TAGS_DEFAULT = 1,
38 TAGS_SET = 2
39 };
40
41 static int fetch_prune_config = -1; /* unspecified */
42 static int prune = -1; /* unspecified */
43 #define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
44
45 static int fetch_prune_tags_config = -1; /* unspecified */
46 static int prune_tags = -1; /* unspecified */
47 #define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
48
49 static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity, deepen_relative;
50 static int progress = -1;
51 static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
52 static int max_children = 1;
53 static enum transport_family family;
54 static const char *depth;
55 static const char *deepen_since;
56 static const char *upload_pack;
57 static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
58 static struct strbuf default_rla = STRBUF_INIT;
59 static struct transport *gtransport;
60 static struct transport *gsecondary;
61 static const char *submodule_prefix = "";
62 static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
63 static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
64 static int shown_url = 0;
65 static struct refspec refmap = REFSPEC_INIT_FETCH;
66 static struct list_objects_filter_options filter_options;
67 static struct string_list server_options = STRING_LIST_INIT_DUP;
68 static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
69
70 static int git_fetch_config(const char *k, const char *v, void *cb)
71 {
72 if (!strcmp(k, "fetch.prune")) {
73 fetch_prune_config = git_config_bool(k, v);
74 return 0;
75 }
76
77 if (!strcmp(k, "fetch.prunetags")) {
78 fetch_prune_tags_config = git_config_bool(k, v);
79 return 0;
80 }
81
82 if (!strcmp(k, "submodule.recurse")) {
83 int r = git_config_bool(k, v) ?
84 RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
85 recurse_submodules = r;
86 }
87
88 if (!strcmp(k, "submodule.fetchjobs")) {
89 max_children = parse_submodule_fetchjobs(k, v);
90 return 0;
91 } else if (!strcmp(k, "fetch.recursesubmodules")) {
92 recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
93 return 0;
94 }
95
96 return git_default_config(k, v, cb);
97 }
98
99 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
100 {
101 BUG_ON_OPT_NEG(unset);
102
103 /*
104 * "git fetch --refmap='' origin foo"
105 * can be used to tell the command not to store anywhere
106 */
107 refspec_append(&refmap, arg);
108
109 return 0;
110 }
111
112 static struct option builtin_fetch_options[] = {
113 OPT__VERBOSITY(&verbosity),
114 OPT_BOOL(0, "all", &all,
115 N_("fetch from all remotes")),
116 OPT_BOOL('a', "append", &append,
117 N_("append to .git/FETCH_HEAD instead of overwriting")),
118 OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
119 N_("path to upload pack on remote end")),
120 OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
121 OPT_BOOL('m', "multiple", &multiple,
122 N_("fetch from multiple remotes")),
123 OPT_SET_INT('t', "tags", &tags,
124 N_("fetch all tags and associated objects"), TAGS_SET),
125 OPT_SET_INT('n', NULL, &tags,
126 N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
127 OPT_INTEGER('j', "jobs", &max_children,
128 N_("number of submodules fetched in parallel")),
129 OPT_BOOL('p', "prune", &prune,
130 N_("prune remote-tracking branches no longer on remote")),
131 OPT_BOOL('P', "prune-tags", &prune_tags,
132 N_("prune local tags no longer on remote and clobber changed tags")),
133 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
134 N_("control recursive fetching of submodules"),
135 PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
136 OPT_BOOL(0, "dry-run", &dry_run,
137 N_("dry run")),
138 OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
139 OPT_BOOL('u', "update-head-ok", &update_head_ok,
140 N_("allow updating of HEAD ref")),
141 OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
142 OPT_STRING(0, "depth", &depth, N_("depth"),
143 N_("deepen history of shallow clone")),
144 OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
145 N_("deepen history of shallow repository based on time")),
146 OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
147 N_("deepen history of shallow clone, excluding rev")),
148 OPT_INTEGER(0, "deepen", &deepen_relative,
149 N_("deepen history of shallow clone")),
150 OPT_SET_INT_F(0, "unshallow", &unshallow,
151 N_("convert to a complete repository"),
152 1, PARSE_OPT_NONEG),
153 { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
154 N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
155 { OPTION_CALLBACK, 0, "recurse-submodules-default",
156 &recurse_submodules_default, N_("on-demand"),
157 N_("default for recursive fetching of submodules "
158 "(lower priority than config files)"),
159 PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules },
160 OPT_BOOL(0, "update-shallow", &update_shallow,
161 N_("accept refs that update .git/shallow")),
162 { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
163 N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
164 OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
165 OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
166 TRANSPORT_FAMILY_IPV4),
167 OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
168 TRANSPORT_FAMILY_IPV6),
169 OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
170 N_("report that we have only objects reachable from this object")),
171 OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
172 OPT_END()
173 };
174
175 static void unlock_pack(void)
176 {
177 if (gtransport)
178 transport_unlock_pack(gtransport);
179 if (gsecondary)
180 transport_unlock_pack(gsecondary);
181 }
182
183 static void unlock_pack_on_signal(int signo)
184 {
185 unlock_pack();
186 sigchain_pop(signo);
187 raise(signo);
188 }
189
190 static void add_merge_config(struct ref **head,
191 const struct ref *remote_refs,
192 struct branch *branch,
193 struct ref ***tail)
194 {
195 int i;
196
197 for (i = 0; i < branch->merge_nr; i++) {
198 struct ref *rm, **old_tail = *tail;
199 struct refspec_item refspec;
200
201 for (rm = *head; rm; rm = rm->next) {
202 if (branch_merge_matches(branch, i, rm->name)) {
203 rm->fetch_head_status = FETCH_HEAD_MERGE;
204 break;
205 }
206 }
207 if (rm)
208 continue;
209
210 /*
211 * Not fetched to a remote-tracking branch? We need to fetch
212 * it anyway to allow this branch's "branch.$name.merge"
213 * to be honored by 'git pull', but we do not have to
214 * fail if branch.$name.merge is misconfigured to point
215 * at a nonexisting branch. If we were indeed called by
216 * 'git pull', it will notice the misconfiguration because
217 * there is no entry in the resulting FETCH_HEAD marked
218 * for merging.
219 */
220 memset(&refspec, 0, sizeof(refspec));
221 refspec.src = branch->merge[i]->src;
222 get_fetch_map(remote_refs, &refspec, tail, 1);
223 for (rm = *old_tail; rm; rm = rm->next)
224 rm->fetch_head_status = FETCH_HEAD_MERGE;
225 }
226 }
227
228 static int will_fetch(struct ref **head, const unsigned char *sha1)
229 {
230 struct ref *rm = *head;
231 while (rm) {
232 if (hasheq(rm->old_oid.hash, sha1))
233 return 1;
234 rm = rm->next;
235 }
236 return 0;
237 }
238
239 struct refname_hash_entry {
240 struct hashmap_entry ent; /* must be the first member */
241 struct object_id oid;
242 int ignore;
243 char refname[FLEX_ARRAY];
244 };
245
246 static int refname_hash_entry_cmp(const void *hashmap_cmp_fn_data,
247 const void *e1_,
248 const void *e2_,
249 const void *keydata)
250 {
251 const struct refname_hash_entry *e1 = e1_;
252 const struct refname_hash_entry *e2 = e2_;
253
254 return strcmp(e1->refname, keydata ? keydata : e2->refname);
255 }
256
257 static struct refname_hash_entry *refname_hash_add(struct hashmap *map,
258 const char *refname,
259 const struct object_id *oid)
260 {
261 struct refname_hash_entry *ent;
262 size_t len = strlen(refname);
263
264 FLEX_ALLOC_MEM(ent, refname, refname, len);
265 hashmap_entry_init(ent, strhash(refname));
266 oidcpy(&ent->oid, oid);
267 hashmap_add(map, ent);
268 return ent;
269 }
270
271 static int add_one_refname(const char *refname,
272 const struct object_id *oid,
273 int flag, void *cbdata)
274 {
275 struct hashmap *refname_map = cbdata;
276
277 (void) refname_hash_add(refname_map, refname, oid);
278 return 0;
279 }
280
281 static void refname_hash_init(struct hashmap *map)
282 {
283 hashmap_init(map, refname_hash_entry_cmp, NULL, 0);
284 }
285
286 static int refname_hash_exists(struct hashmap *map, const char *refname)
287 {
288 return !!hashmap_get_from_hash(map, strhash(refname), refname);
289 }
290
291 static void clear_item(struct refname_hash_entry *item)
292 {
293 item->ignore = 1;
294 }
295
296 static void find_non_local_tags(const struct ref *refs,
297 struct ref **head,
298 struct ref ***tail)
299 {
300 struct hashmap existing_refs;
301 struct hashmap remote_refs;
302 struct string_list remote_refs_list = STRING_LIST_INIT_NODUP;
303 struct string_list_item *remote_ref_item;
304 const struct ref *ref;
305 struct refname_hash_entry *item = NULL;
306
307 refname_hash_init(&existing_refs);
308 refname_hash_init(&remote_refs);
309
310 for_each_ref(add_one_refname, &existing_refs);
311 for (ref = refs; ref; ref = ref->next) {
312 if (!starts_with(ref->name, "refs/tags/"))
313 continue;
314
315 /*
316 * The peeled ref always follows the matching base
317 * ref, so if we see a peeled ref that we don't want
318 * to fetch then we can mark the ref entry in the list
319 * as one to ignore by setting util to NULL.
320 */
321 if (ends_with(ref->name, "^{}")) {
322 if (item &&
323 !has_object_file_with_flags(&ref->old_oid,
324 OBJECT_INFO_QUICK) &&
325 !will_fetch(head, ref->old_oid.hash) &&
326 !has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
327 !will_fetch(head, item->oid.hash))
328 clear_item(item);
329 item = NULL;
330 continue;
331 }
332
333 /*
334 * If item is non-NULL here, then we previously saw a
335 * ref not followed by a peeled reference, so we need
336 * to check if it is a lightweight tag that we want to
337 * fetch.
338 */
339 if (item &&
340 !has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
341 !will_fetch(head, item->oid.hash))
342 clear_item(item);
343
344 item = NULL;
345
346 /* skip duplicates and refs that we already have */
347 if (refname_hash_exists(&remote_refs, ref->name) ||
348 refname_hash_exists(&existing_refs, ref->name))
349 continue;
350
351 item = refname_hash_add(&remote_refs, ref->name, &ref->old_oid);
352 string_list_insert(&remote_refs_list, ref->name);
353 }
354 hashmap_free(&existing_refs, 1);
355
356 /*
357 * We may have a final lightweight tag that needs to be
358 * checked to see if it needs fetching.
359 */
360 if (item &&
361 !has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
362 !will_fetch(head, item->oid.hash))
363 clear_item(item);
364
365 /*
366 * For all the tags in the remote_refs_list,
367 * add them to the list of refs to be fetched
368 */
369 for_each_string_list_item(remote_ref_item, &remote_refs_list) {
370 const char *refname = remote_ref_item->string;
371 struct ref *rm;
372
373 item = hashmap_get_from_hash(&remote_refs, strhash(refname), refname);
374 if (!item)
375 BUG("unseen remote ref?");
376
377 /* Unless we have already decided to ignore this item... */
378 if (item->ignore)
379 continue;
380
381 rm = alloc_ref(item->refname);
382 rm->peer_ref = alloc_ref(item->refname);
383 oidcpy(&rm->old_oid, &item->oid);
384 **tail = rm;
385 *tail = &rm->next;
386 }
387 hashmap_free(&remote_refs, 1);
388 string_list_clear(&remote_refs_list, 0);
389 }
390
391 static struct ref *get_ref_map(struct remote *remote,
392 const struct ref *remote_refs,
393 struct refspec *rs,
394 int tags, int *autotags)
395 {
396 int i;
397 struct ref *rm;
398 struct ref *ref_map = NULL;
399 struct ref **tail = &ref_map;
400
401 /* opportunistically-updated references: */
402 struct ref *orefs = NULL, **oref_tail = &orefs;
403
404 struct hashmap existing_refs;
405
406 if (rs->nr) {
407 struct refspec *fetch_refspec;
408
409 for (i = 0; i < rs->nr; i++) {
410 get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
411 if (rs->items[i].dst && rs->items[i].dst[0])
412 *autotags = 1;
413 }
414 /* Merge everything on the command line (but not --tags) */
415 for (rm = ref_map; rm; rm = rm->next)
416 rm->fetch_head_status = FETCH_HEAD_MERGE;
417
418 /*
419 * For any refs that we happen to be fetching via
420 * command-line arguments, the destination ref might
421 * have been missing or have been different than the
422 * remote-tracking ref that would be derived from the
423 * configured refspec. In these cases, we want to
424 * take the opportunity to update their configured
425 * remote-tracking reference. However, we do not want
426 * to mention these entries in FETCH_HEAD at all, as
427 * they would simply be duplicates of existing
428 * entries, so we set them FETCH_HEAD_IGNORE below.
429 *
430 * We compute these entries now, based only on the
431 * refspecs specified on the command line. But we add
432 * them to the list following the refspecs resulting
433 * from the tags option so that one of the latter,
434 * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
435 * by ref_remove_duplicates() in favor of one of these
436 * opportunistic entries with FETCH_HEAD_IGNORE.
437 */
438 if (refmap.nr)
439 fetch_refspec = &refmap;
440 else
441 fetch_refspec = &remote->fetch;
442
443 for (i = 0; i < fetch_refspec->nr; i++)
444 get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
445 } else if (refmap.nr) {
446 die("--refmap option is only meaningful with command-line refspec(s).");
447 } else {
448 /* Use the defaults */
449 struct branch *branch = branch_get(NULL);
450 int has_merge = branch_has_merge_config(branch);
451 if (remote &&
452 (remote->fetch.nr ||
453 /* Note: has_merge implies non-NULL branch->remote_name */
454 (has_merge && !strcmp(branch->remote_name, remote->name)))) {
455 for (i = 0; i < remote->fetch.nr; i++) {
456 get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
457 if (remote->fetch.items[i].dst &&
458 remote->fetch.items[i].dst[0])
459 *autotags = 1;
460 if (!i && !has_merge && ref_map &&
461 !remote->fetch.items[0].pattern)
462 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
463 }
464 /*
465 * if the remote we're fetching from is the same
466 * as given in branch.<name>.remote, we add the
467 * ref given in branch.<name>.merge, too.
468 *
469 * Note: has_merge implies non-NULL branch->remote_name
470 */
471 if (has_merge &&
472 !strcmp(branch->remote_name, remote->name))
473 add_merge_config(&ref_map, remote_refs, branch, &tail);
474 } else {
475 ref_map = get_remote_ref(remote_refs, "HEAD");
476 if (!ref_map)
477 die(_("Couldn't find remote ref HEAD"));
478 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
479 tail = &ref_map->next;
480 }
481 }
482
483 if (tags == TAGS_SET)
484 /* also fetch all tags */
485 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
486 else if (tags == TAGS_DEFAULT && *autotags)
487 find_non_local_tags(remote_refs, &ref_map, &tail);
488
489 /* Now append any refs to be updated opportunistically: */
490 *tail = orefs;
491 for (rm = orefs; rm; rm = rm->next) {
492 rm->fetch_head_status = FETCH_HEAD_IGNORE;
493 tail = &rm->next;
494 }
495
496 ref_map = ref_remove_duplicates(ref_map);
497
498 refname_hash_init(&existing_refs);
499 for_each_ref(add_one_refname, &existing_refs);
500
501 for (rm = ref_map; rm; rm = rm->next) {
502 if (rm->peer_ref) {
503 const char *refname = rm->peer_ref->name;
504 struct refname_hash_entry *peer_item;
505
506 peer_item = hashmap_get_from_hash(&existing_refs,
507 strhash(refname),
508 refname);
509 if (peer_item) {
510 struct object_id *old_oid = &peer_item->oid;
511 oidcpy(&rm->peer_ref->old_oid, old_oid);
512 }
513 }
514 }
515 hashmap_free(&existing_refs, 1);
516
517 return ref_map;
518 }
519
520 #define STORE_REF_ERROR_OTHER 1
521 #define STORE_REF_ERROR_DF_CONFLICT 2
522
523 static int s_update_ref(const char *action,
524 struct ref *ref,
525 int check_old)
526 {
527 char *msg;
528 char *rla = getenv("GIT_REFLOG_ACTION");
529 struct ref_transaction *transaction;
530 struct strbuf err = STRBUF_INIT;
531 int ret, df_conflict = 0;
532
533 if (dry_run)
534 return 0;
535 if (!rla)
536 rla = default_rla.buf;
537 msg = xstrfmt("%s: %s", rla, action);
538
539 transaction = ref_transaction_begin(&err);
540 if (!transaction ||
541 ref_transaction_update(transaction, ref->name,
542 &ref->new_oid,
543 check_old ? &ref->old_oid : NULL,
544 0, msg, &err))
545 goto fail;
546
547 ret = ref_transaction_commit(transaction, &err);
548 if (ret) {
549 df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
550 goto fail;
551 }
552
553 ref_transaction_free(transaction);
554 strbuf_release(&err);
555 free(msg);
556 return 0;
557 fail:
558 ref_transaction_free(transaction);
559 error("%s", err.buf);
560 strbuf_release(&err);
561 free(msg);
562 return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
563 : STORE_REF_ERROR_OTHER;
564 }
565
566 static int refcol_width = 10;
567 static int compact_format;
568
569 static void adjust_refcol_width(const struct ref *ref)
570 {
571 int max, rlen, llen, len;
572
573 /* uptodate lines are only shown on high verbosity level */
574 if (!verbosity && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
575 return;
576
577 max = term_columns();
578 rlen = utf8_strwidth(prettify_refname(ref->name));
579
580 llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
581
582 /*
583 * rough estimation to see if the output line is too long and
584 * should not be counted (we can't do precise calculation
585 * anyway because we don't know if the error explanation part
586 * will be printed in update_local_ref)
587 */
588 if (compact_format) {
589 llen = 0;
590 max = max * 2 / 3;
591 }
592 len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
593 if (len >= max)
594 return;
595
596 /*
597 * Not precise calculation for compact mode because '*' can
598 * appear on the left hand side of '->' and shrink the column
599 * back.
600 */
601 if (refcol_width < rlen)
602 refcol_width = rlen;
603 }
604
605 static void prepare_format_display(struct ref *ref_map)
606 {
607 struct ref *rm;
608 const char *format = "full";
609
610 git_config_get_string_const("fetch.output", &format);
611 if (!strcasecmp(format, "full"))
612 compact_format = 0;
613 else if (!strcasecmp(format, "compact"))
614 compact_format = 1;
615 else
616 die(_("configuration fetch.output contains invalid value %s"),
617 format);
618
619 for (rm = ref_map; rm; rm = rm->next) {
620 if (rm->status == REF_STATUS_REJECT_SHALLOW ||
621 !rm->peer_ref ||
622 !strcmp(rm->name, "HEAD"))
623 continue;
624
625 adjust_refcol_width(rm);
626 }
627 }
628
629 static void print_remote_to_local(struct strbuf *display,
630 const char *remote, const char *local)
631 {
632 strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
633 }
634
635 static int find_and_replace(struct strbuf *haystack,
636 const char *needle,
637 const char *placeholder)
638 {
639 const char *p = NULL;
640 int plen, nlen;
641
642 nlen = strlen(needle);
643 if (ends_with(haystack->buf, needle))
644 p = haystack->buf + haystack->len - nlen;
645 else
646 p = strstr(haystack->buf, needle);
647 if (!p)
648 return 0;
649
650 if (p > haystack->buf && p[-1] != '/')
651 return 0;
652
653 plen = strlen(p);
654 if (plen > nlen && p[nlen] != '/')
655 return 0;
656
657 strbuf_splice(haystack, p - haystack->buf, nlen,
658 placeholder, strlen(placeholder));
659 return 1;
660 }
661
662 static void print_compact(struct strbuf *display,
663 const char *remote, const char *local)
664 {
665 struct strbuf r = STRBUF_INIT;
666 struct strbuf l = STRBUF_INIT;
667
668 if (!strcmp(remote, local)) {
669 strbuf_addf(display, "%-*s -> *", refcol_width, remote);
670 return;
671 }
672
673 strbuf_addstr(&r, remote);
674 strbuf_addstr(&l, local);
675
676 if (!find_and_replace(&r, local, "*"))
677 find_and_replace(&l, remote, "*");
678 print_remote_to_local(display, r.buf, l.buf);
679
680 strbuf_release(&r);
681 strbuf_release(&l);
682 }
683
684 static void format_display(struct strbuf *display, char code,
685 const char *summary, const char *error,
686 const char *remote, const char *local,
687 int summary_width)
688 {
689 int width = (summary_width + strlen(summary) - gettext_width(summary));
690
691 strbuf_addf(display, "%c %-*s ", code, width, summary);
692 if (!compact_format)
693 print_remote_to_local(display, remote, local);
694 else
695 print_compact(display, remote, local);
696 if (error)
697 strbuf_addf(display, " (%s)", error);
698 }
699
700 static int update_local_ref(struct ref *ref,
701 const char *remote,
702 const struct ref *remote_ref,
703 struct strbuf *display,
704 int summary_width)
705 {
706 struct commit *current = NULL, *updated;
707 enum object_type type;
708 struct branch *current_branch = branch_get(NULL);
709 const char *pretty_ref = prettify_refname(ref->name);
710
711 type = oid_object_info(the_repository, &ref->new_oid, NULL);
712 if (type < 0)
713 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
714
715 if (oideq(&ref->old_oid, &ref->new_oid)) {
716 if (verbosity > 0)
717 format_display(display, '=', _("[up to date]"), NULL,
718 remote, pretty_ref, summary_width);
719 return 0;
720 }
721
722 if (current_branch &&
723 !strcmp(ref->name, current_branch->name) &&
724 !(update_head_ok || is_bare_repository()) &&
725 !is_null_oid(&ref->old_oid)) {
726 /*
727 * If this is the head, and it's not okay to update
728 * the head, and the old value of the head isn't empty...
729 */
730 format_display(display, '!', _("[rejected]"),
731 _("can't fetch in current branch"),
732 remote, pretty_ref, summary_width);
733 return 1;
734 }
735
736 if (!is_null_oid(&ref->old_oid) &&
737 starts_with(ref->name, "refs/tags/")) {
738 if (force || ref->force) {
739 int r;
740 r = s_update_ref("updating tag", ref, 0);
741 format_display(display, r ? '!' : 't', _("[tag update]"),
742 r ? _("unable to update local ref") : NULL,
743 remote, pretty_ref, summary_width);
744 return r;
745 } else {
746 format_display(display, '!', _("[rejected]"), _("would clobber existing tag"),
747 remote, pretty_ref, summary_width);
748 return 1;
749 }
750 }
751
752 current = lookup_commit_reference_gently(the_repository,
753 &ref->old_oid, 1);
754 updated = lookup_commit_reference_gently(the_repository,
755 &ref->new_oid, 1);
756 if (!current || !updated) {
757 const char *msg;
758 const char *what;
759 int r;
760 /*
761 * Nicely describe the new ref we're fetching.
762 * Base this on the remote's ref name, as it's
763 * more likely to follow a standard layout.
764 */
765 const char *name = remote_ref ? remote_ref->name : "";
766 if (starts_with(name, "refs/tags/")) {
767 msg = "storing tag";
768 what = _("[new tag]");
769 } else if (starts_with(name, "refs/heads/")) {
770 msg = "storing head";
771 what = _("[new branch]");
772 } else {
773 msg = "storing ref";
774 what = _("[new ref]");
775 }
776
777 r = s_update_ref(msg, ref, 0);
778 format_display(display, r ? '!' : '*', what,
779 r ? _("unable to update local ref") : NULL,
780 remote, pretty_ref, summary_width);
781 return r;
782 }
783
784 if (in_merge_bases(current, updated)) {
785 struct strbuf quickref = STRBUF_INIT;
786 int r;
787 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
788 strbuf_addstr(&quickref, "..");
789 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
790 r = s_update_ref("fast-forward", ref, 1);
791 format_display(display, r ? '!' : ' ', quickref.buf,
792 r ? _("unable to update local ref") : NULL,
793 remote, pretty_ref, summary_width);
794 strbuf_release(&quickref);
795 return r;
796 } else if (force || ref->force) {
797 struct strbuf quickref = STRBUF_INIT;
798 int r;
799 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
800 strbuf_addstr(&quickref, "...");
801 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
802 r = s_update_ref("forced-update", ref, 1);
803 format_display(display, r ? '!' : '+', quickref.buf,
804 r ? _("unable to update local ref") : _("forced update"),
805 remote, pretty_ref, summary_width);
806 strbuf_release(&quickref);
807 return r;
808 } else {
809 format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
810 remote, pretty_ref, summary_width);
811 return 1;
812 }
813 }
814
815 static int iterate_ref_map(void *cb_data, struct object_id *oid)
816 {
817 struct ref **rm = cb_data;
818 struct ref *ref = *rm;
819
820 while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
821 ref = ref->next;
822 if (!ref)
823 return -1; /* end of the list */
824 *rm = ref->next;
825 oidcpy(oid, &ref->old_oid);
826 return 0;
827 }
828
829 static int store_updated_refs(const char *raw_url, const char *remote_name,
830 int connectivity_checked, struct ref *ref_map)
831 {
832 FILE *fp;
833 struct commit *commit;
834 int url_len, i, rc = 0;
835 struct strbuf note = STRBUF_INIT;
836 const char *what, *kind;
837 struct ref *rm;
838 char *url;
839 const char *filename = dry_run ? "/dev/null" : git_path_fetch_head(the_repository);
840 int want_status;
841 int summary_width = transport_summary_width(ref_map);
842
843 fp = fopen(filename, "a");
844 if (!fp)
845 return error_errno(_("cannot open %s"), filename);
846
847 if (raw_url)
848 url = transport_anonymize_url(raw_url);
849 else
850 url = xstrdup("foreign");
851
852 if (!connectivity_checked) {
853 rm = ref_map;
854 if (check_connected(iterate_ref_map, &rm, NULL)) {
855 rc = error(_("%s did not send all necessary objects\n"), url);
856 goto abort;
857 }
858 }
859
860 prepare_format_display(ref_map);
861
862 /*
863 * We do a pass for each fetch_head_status type in their enum order, so
864 * merged entries are written before not-for-merge. That lets readers
865 * use FETCH_HEAD as a refname to refer to the ref to be merged.
866 */
867 for (want_status = FETCH_HEAD_MERGE;
868 want_status <= FETCH_HEAD_IGNORE;
869 want_status++) {
870 for (rm = ref_map; rm; rm = rm->next) {
871 struct ref *ref = NULL;
872 const char *merge_status_marker = "";
873
874 if (rm->status == REF_STATUS_REJECT_SHALLOW) {
875 if (want_status == FETCH_HEAD_MERGE)
876 warning(_("reject %s because shallow roots are not allowed to be updated"),
877 rm->peer_ref ? rm->peer_ref->name : rm->name);
878 continue;
879 }
880
881 commit = lookup_commit_reference_gently(the_repository,
882 &rm->old_oid,
883 1);
884 if (!commit)
885 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
886
887 if (rm->fetch_head_status != want_status)
888 continue;
889
890 if (rm->peer_ref) {
891 ref = alloc_ref(rm->peer_ref->name);
892 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
893 oidcpy(&ref->new_oid, &rm->old_oid);
894 ref->force = rm->peer_ref->force;
895 }
896
897 if (recurse_submodules != RECURSE_SUBMODULES_OFF)
898 check_for_new_submodule_commits(&rm->old_oid);
899
900 if (!strcmp(rm->name, "HEAD")) {
901 kind = "";
902 what = "";
903 }
904 else if (starts_with(rm->name, "refs/heads/")) {
905 kind = "branch";
906 what = rm->name + 11;
907 }
908 else if (starts_with(rm->name, "refs/tags/")) {
909 kind = "tag";
910 what = rm->name + 10;
911 }
912 else if (starts_with(rm->name, "refs/remotes/")) {
913 kind = "remote-tracking branch";
914 what = rm->name + 13;
915 }
916 else {
917 kind = "";
918 what = rm->name;
919 }
920
921 url_len = strlen(url);
922 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
923 ;
924 url_len = i + 1;
925 if (4 < i && !strncmp(".git", url + i - 3, 4))
926 url_len = i - 3;
927
928 strbuf_reset(&note);
929 if (*what) {
930 if (*kind)
931 strbuf_addf(&note, "%s ", kind);
932 strbuf_addf(&note, "'%s' of ", what);
933 }
934 switch (rm->fetch_head_status) {
935 case FETCH_HEAD_NOT_FOR_MERGE:
936 merge_status_marker = "not-for-merge";
937 /* fall-through */
938 case FETCH_HEAD_MERGE:
939 fprintf(fp, "%s\t%s\t%s",
940 oid_to_hex(&rm->old_oid),
941 merge_status_marker,
942 note.buf);
943 for (i = 0; i < url_len; ++i)
944 if ('\n' == url[i])
945 fputs("\\n", fp);
946 else
947 fputc(url[i], fp);
948 fputc('\n', fp);
949 break;
950 default:
951 /* do not write anything to FETCH_HEAD */
952 break;
953 }
954
955 strbuf_reset(&note);
956 if (ref) {
957 rc |= update_local_ref(ref, what, rm, &note,
958 summary_width);
959 free(ref);
960 } else
961 format_display(&note, '*',
962 *kind ? kind : "branch", NULL,
963 *what ? what : "HEAD",
964 "FETCH_HEAD", summary_width);
965 if (note.len) {
966 if (verbosity >= 0 && !shown_url) {
967 fprintf(stderr, _("From %.*s\n"),
968 url_len, url);
969 shown_url = 1;
970 }
971 if (verbosity >= 0)
972 fprintf(stderr, " %s\n", note.buf);
973 }
974 }
975 }
976
977 if (rc & STORE_REF_ERROR_DF_CONFLICT)
978 error(_("some local refs could not be updated; try running\n"
979 " 'git remote prune %s' to remove any old, conflicting "
980 "branches"), remote_name);
981
982 abort:
983 strbuf_release(&note);
984 free(url);
985 fclose(fp);
986 return rc;
987 }
988
989 /*
990 * We would want to bypass the object transfer altogether if
991 * everything we are going to fetch already exists and is connected
992 * locally.
993 */
994 static int check_exist_and_connected(struct ref *ref_map)
995 {
996 struct ref *rm = ref_map;
997 struct check_connected_options opt = CHECK_CONNECTED_INIT;
998 struct ref *r;
999
1000 /*
1001 * If we are deepening a shallow clone we already have these
1002 * objects reachable. Running rev-list here will return with
1003 * a good (0) exit status and we'll bypass the fetch that we
1004 * really need to perform. Claiming failure now will ensure
1005 * we perform the network exchange to deepen our history.
1006 */
1007 if (deepen)
1008 return -1;
1009
1010 /*
1011 * check_connected() allows objects to merely be promised, but
1012 * we need all direct targets to exist.
1013 */
1014 for (r = rm; r; r = r->next) {
1015 if (!has_object_file(&r->old_oid))
1016 return -1;
1017 }
1018
1019 opt.quiet = 1;
1020 return check_connected(iterate_ref_map, &rm, &opt);
1021 }
1022
1023 static int fetch_refs(struct transport *transport, struct ref *ref_map)
1024 {
1025 int ret = check_exist_and_connected(ref_map);
1026 if (ret)
1027 ret = transport_fetch_refs(transport, ref_map);
1028 if (!ret)
1029 /*
1030 * Keep the new pack's ".keep" file around to allow the caller
1031 * time to update refs to reference the new objects.
1032 */
1033 return 0;
1034 transport_unlock_pack(transport);
1035 return ret;
1036 }
1037
1038 /* Update local refs based on the ref values fetched from a remote */
1039 static int consume_refs(struct transport *transport, struct ref *ref_map)
1040 {
1041 int connectivity_checked = transport->smart_options
1042 ? transport->smart_options->connectivity_checked : 0;
1043 int ret = store_updated_refs(transport->url,
1044 transport->remote->name,
1045 connectivity_checked,
1046 ref_map);
1047 transport_unlock_pack(transport);
1048 return ret;
1049 }
1050
1051 static int prune_refs(struct refspec *rs, struct ref *ref_map,
1052 const char *raw_url)
1053 {
1054 int url_len, i, result = 0;
1055 struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
1056 char *url;
1057 int summary_width = transport_summary_width(stale_refs);
1058 const char *dangling_msg = dry_run
1059 ? _(" (%s will become dangling)")
1060 : _(" (%s has become dangling)");
1061
1062 if (raw_url)
1063 url = transport_anonymize_url(raw_url);
1064 else
1065 url = xstrdup("foreign");
1066
1067 url_len = strlen(url);
1068 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
1069 ;
1070
1071 url_len = i + 1;
1072 if (4 < i && !strncmp(".git", url + i - 3, 4))
1073 url_len = i - 3;
1074
1075 if (!dry_run) {
1076 struct string_list refnames = STRING_LIST_INIT_NODUP;
1077
1078 for (ref = stale_refs; ref; ref = ref->next)
1079 string_list_append(&refnames, ref->name);
1080
1081 result = delete_refs("fetch: prune", &refnames, 0);
1082 string_list_clear(&refnames, 0);
1083 }
1084
1085 if (verbosity >= 0) {
1086 for (ref = stale_refs; ref; ref = ref->next) {
1087 struct strbuf sb = STRBUF_INIT;
1088 if (!shown_url) {
1089 fprintf(stderr, _("From %.*s\n"), url_len, url);
1090 shown_url = 1;
1091 }
1092 format_display(&sb, '-', _("[deleted]"), NULL,
1093 _("(none)"), prettify_refname(ref->name),
1094 summary_width);
1095 fprintf(stderr, " %s\n",sb.buf);
1096 strbuf_release(&sb);
1097 warn_dangling_symref(stderr, dangling_msg, ref->name);
1098 }
1099 }
1100
1101 free(url);
1102 free_refs(stale_refs);
1103 return result;
1104 }
1105
1106 static void check_not_current_branch(struct ref *ref_map)
1107 {
1108 struct branch *current_branch = branch_get(NULL);
1109
1110 if (is_bare_repository() || !current_branch)
1111 return;
1112
1113 for (; ref_map; ref_map = ref_map->next)
1114 if (ref_map->peer_ref && !strcmp(current_branch->refname,
1115 ref_map->peer_ref->name))
1116 die(_("Refusing to fetch into current branch %s "
1117 "of non-bare repository"), current_branch->refname);
1118 }
1119
1120 static int truncate_fetch_head(void)
1121 {
1122 const char *filename = git_path_fetch_head(the_repository);
1123 FILE *fp = fopen_for_writing(filename);
1124
1125 if (!fp)
1126 return error_errno(_("cannot open %s"), filename);
1127 fclose(fp);
1128 return 0;
1129 }
1130
1131 static void set_option(struct transport *transport, const char *name, const char *value)
1132 {
1133 int r = transport_set_option(transport, name, value);
1134 if (r < 0)
1135 die(_("Option \"%s\" value \"%s\" is not valid for %s"),
1136 name, value, transport->url);
1137 if (r > 0)
1138 warning(_("Option \"%s\" is ignored for %s\n"),
1139 name, transport->url);
1140 }
1141
1142
1143 static int add_oid(const char *refname, const struct object_id *oid, int flags,
1144 void *cb_data)
1145 {
1146 struct oid_array *oids = cb_data;
1147
1148 oid_array_append(oids, oid);
1149 return 0;
1150 }
1151
1152 static void add_negotiation_tips(struct git_transport_options *smart_options)
1153 {
1154 struct oid_array *oids = xcalloc(1, sizeof(*oids));
1155 int i;
1156
1157 for (i = 0; i < negotiation_tip.nr; i++) {
1158 const char *s = negotiation_tip.items[i].string;
1159 int old_nr;
1160 if (!has_glob_specials(s)) {
1161 struct object_id oid;
1162 if (get_oid(s, &oid))
1163 die("%s is not a valid object", s);
1164 oid_array_append(oids, &oid);
1165 continue;
1166 }
1167 old_nr = oids->nr;
1168 for_each_glob_ref(add_oid, s, oids);
1169 if (old_nr == oids->nr)
1170 warning("Ignoring --negotiation-tip=%s because it does not match any refs",
1171 s);
1172 }
1173 smart_options->negotiation_tips = oids;
1174 }
1175
1176 static struct transport *prepare_transport(struct remote *remote, int deepen)
1177 {
1178 struct transport *transport;
1179
1180 transport = transport_get(remote, NULL);
1181 transport_set_verbosity(transport, verbosity, progress);
1182 transport->family = family;
1183 if (upload_pack)
1184 set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
1185 if (keep)
1186 set_option(transport, TRANS_OPT_KEEP, "yes");
1187 if (depth)
1188 set_option(transport, TRANS_OPT_DEPTH, depth);
1189 if (deepen && deepen_since)
1190 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
1191 if (deepen && deepen_not.nr)
1192 set_option(transport, TRANS_OPT_DEEPEN_NOT,
1193 (const char *)&deepen_not);
1194 if (deepen_relative)
1195 set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
1196 if (update_shallow)
1197 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
1198 if (filter_options.choice) {
1199 struct strbuf expanded_filter_spec = STRBUF_INIT;
1200 expand_list_objects_filter_spec(&filter_options,
1201 &expanded_filter_spec);
1202 set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
1203 expanded_filter_spec.buf);
1204 set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
1205 strbuf_release(&expanded_filter_spec);
1206 }
1207 if (negotiation_tip.nr) {
1208 if (transport->smart_options)
1209 add_negotiation_tips(transport->smart_options);
1210 else
1211 warning("Ignoring --negotiation-tip because the protocol does not support it.");
1212 }
1213 return transport;
1214 }
1215
1216 static void backfill_tags(struct transport *transport, struct ref *ref_map)
1217 {
1218 int cannot_reuse;
1219
1220 /*
1221 * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
1222 * when remote helper is used (setting it to an empty string
1223 * is not unsetting). We could extend the remote helper
1224 * protocol for that, but for now, just force a new connection
1225 * without deepen-since. Similar story for deepen-not.
1226 */
1227 cannot_reuse = transport->cannot_reuse ||
1228 deepen_since || deepen_not.nr;
1229 if (cannot_reuse) {
1230 gsecondary = prepare_transport(transport->remote, 0);
1231 transport = gsecondary;
1232 }
1233
1234 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
1235 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
1236 transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
1237 if (!fetch_refs(transport, ref_map))
1238 consume_refs(transport, ref_map);
1239
1240 if (gsecondary) {
1241 transport_disconnect(gsecondary);
1242 gsecondary = NULL;
1243 }
1244 }
1245
1246 static int do_fetch(struct transport *transport,
1247 struct refspec *rs)
1248 {
1249 struct ref *ref_map;
1250 int autotags = (transport->remote->fetch_tags == 1);
1251 int retcode = 0;
1252 const struct ref *remote_refs;
1253 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
1254 int must_list_refs = 1;
1255
1256 if (tags == TAGS_DEFAULT) {
1257 if (transport->remote->fetch_tags == 2)
1258 tags = TAGS_SET;
1259 if (transport->remote->fetch_tags == -1)
1260 tags = TAGS_UNSET;
1261 }
1262
1263 /* if not appending, truncate FETCH_HEAD */
1264 if (!append && !dry_run) {
1265 retcode = truncate_fetch_head();
1266 if (retcode)
1267 goto cleanup;
1268 }
1269
1270 if (rs->nr) {
1271 int i;
1272
1273 refspec_ref_prefixes(rs, &ref_prefixes);
1274
1275 /*
1276 * We can avoid listing refs if all of them are exact
1277 * OIDs
1278 */
1279 must_list_refs = 0;
1280 for (i = 0; i < rs->nr; i++) {
1281 if (!rs->items[i].exact_sha1) {
1282 must_list_refs = 1;
1283 break;
1284 }
1285 }
1286 } else if (transport->remote && transport->remote->fetch.nr)
1287 refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
1288
1289 if (tags == TAGS_SET || tags == TAGS_DEFAULT) {
1290 must_list_refs = 1;
1291 if (ref_prefixes.argc)
1292 argv_array_push(&ref_prefixes, "refs/tags/");
1293 }
1294
1295 if (must_list_refs)
1296 remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
1297 else
1298 remote_refs = NULL;
1299
1300 argv_array_clear(&ref_prefixes);
1301
1302 ref_map = get_ref_map(transport->remote, remote_refs, rs,
1303 tags, &autotags);
1304 if (!update_head_ok)
1305 check_not_current_branch(ref_map);
1306
1307 if (tags == TAGS_DEFAULT && autotags)
1308 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
1309 if (prune) {
1310 /*
1311 * We only prune based on refspecs specified
1312 * explicitly (via command line or configuration); we
1313 * don't care whether --tags was specified.
1314 */
1315 if (rs->nr) {
1316 prune_refs(rs, ref_map, transport->url);
1317 } else {
1318 prune_refs(&transport->remote->fetch,
1319 ref_map,
1320 transport->url);
1321 }
1322 }
1323 if (fetch_refs(transport, ref_map) || consume_refs(transport, ref_map)) {
1324 free_refs(ref_map);
1325 retcode = 1;
1326 goto cleanup;
1327 }
1328 free_refs(ref_map);
1329
1330 /* if neither --no-tags nor --tags was specified, do automated tag
1331 * following ... */
1332 if (tags == TAGS_DEFAULT && autotags) {
1333 struct ref **tail = &ref_map;
1334 ref_map = NULL;
1335 find_non_local_tags(remote_refs, &ref_map, &tail);
1336 if (ref_map)
1337 backfill_tags(transport, ref_map);
1338 free_refs(ref_map);
1339 }
1340
1341 cleanup:
1342 return retcode;
1343 }
1344
1345 static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1346 {
1347 struct string_list *list = priv;
1348 if (!remote->skip_default_update)
1349 string_list_append(list, remote->name);
1350 return 0;
1351 }
1352
1353 struct remote_group_data {
1354 const char *name;
1355 struct string_list *list;
1356 };
1357
1358 static int get_remote_group(const char *key, const char *value, void *priv)
1359 {
1360 struct remote_group_data *g = priv;
1361
1362 if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
1363 /* split list by white space */
1364 while (*value) {
1365 size_t wordlen = strcspn(value, " \t\n");
1366
1367 if (wordlen >= 1)
1368 string_list_append_nodup(g->list,
1369 xstrndup(value, wordlen));
1370 value += wordlen + (value[wordlen] != '\0');
1371 }
1372 }
1373
1374 return 0;
1375 }
1376
1377 static int add_remote_or_group(const char *name, struct string_list *list)
1378 {
1379 int prev_nr = list->nr;
1380 struct remote_group_data g;
1381 g.name = name; g.list = list;
1382
1383 git_config(get_remote_group, &g);
1384 if (list->nr == prev_nr) {
1385 struct remote *remote = remote_get(name);
1386 if (!remote_is_configured(remote, 0))
1387 return 0;
1388 string_list_append(list, remote->name);
1389 }
1390 return 1;
1391 }
1392
1393 static void add_options_to_argv(struct argv_array *argv)
1394 {
1395 if (dry_run)
1396 argv_array_push(argv, "--dry-run");
1397 if (prune != -1)
1398 argv_array_push(argv, prune ? "--prune" : "--no-prune");
1399 if (prune_tags != -1)
1400 argv_array_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
1401 if (update_head_ok)
1402 argv_array_push(argv, "--update-head-ok");
1403 if (force)
1404 argv_array_push(argv, "--force");
1405 if (keep)
1406 argv_array_push(argv, "--keep");
1407 if (recurse_submodules == RECURSE_SUBMODULES_ON)
1408 argv_array_push(argv, "--recurse-submodules");
1409 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
1410 argv_array_push(argv, "--recurse-submodules=on-demand");
1411 if (tags == TAGS_SET)
1412 argv_array_push(argv, "--tags");
1413 else if (tags == TAGS_UNSET)
1414 argv_array_push(argv, "--no-tags");
1415 if (verbosity >= 2)
1416 argv_array_push(argv, "-v");
1417 if (verbosity >= 1)
1418 argv_array_push(argv, "-v");
1419 else if (verbosity < 0)
1420 argv_array_push(argv, "-q");
1421
1422 }
1423
1424 static int fetch_multiple(struct string_list *list)
1425 {
1426 int i, result = 0;
1427 struct argv_array argv = ARGV_ARRAY_INIT;
1428
1429 if (!append && !dry_run) {
1430 int errcode = truncate_fetch_head();
1431 if (errcode)
1432 return errcode;
1433 }
1434
1435 argv_array_pushl(&argv, "fetch", "--append", NULL);
1436 add_options_to_argv(&argv);
1437
1438 for (i = 0; i < list->nr; i++) {
1439 const char *name = list->items[i].string;
1440 argv_array_push(&argv, name);
1441 if (verbosity >= 0)
1442 printf(_("Fetching %s\n"), name);
1443 if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
1444 error(_("Could not fetch %s"), name);
1445 result = 1;
1446 }
1447 argv_array_pop(&argv);
1448 }
1449
1450 argv_array_clear(&argv);
1451 return result;
1452 }
1453
1454 /*
1455 * Fetching from the promisor remote should use the given filter-spec
1456 * or inherit the default filter-spec from the config.
1457 */
1458 static inline void fetch_one_setup_partial(struct remote *remote)
1459 {
1460 /*
1461 * Explicit --no-filter argument overrides everything, regardless
1462 * of any prior partial clones and fetches.
1463 */
1464 if (filter_options.no_filter)
1465 return;
1466
1467 /*
1468 * If no prior partial clone/fetch and the current fetch DID NOT
1469 * request a partial-fetch, do a normal fetch.
1470 */
1471 if (!repository_format_partial_clone && !filter_options.choice)
1472 return;
1473
1474 /*
1475 * If this is the FIRST partial-fetch request, we enable partial
1476 * on this repo and remember the given filter-spec as the default
1477 * for subsequent fetches to this remote.
1478 */
1479 if (!repository_format_partial_clone && filter_options.choice) {
1480 partial_clone_register(remote->name, &filter_options);
1481 return;
1482 }
1483
1484 /*
1485 * We are currently limited to only ONE promisor remote and only
1486 * allow partial-fetches from the promisor remote.
1487 */
1488 if (strcmp(remote->name, repository_format_partial_clone)) {
1489 if (filter_options.choice)
1490 die(_("--filter can only be used with the remote "
1491 "configured in extensions.partialClone"));
1492 return;
1493 }
1494
1495 /*
1496 * Do a partial-fetch from the promisor remote using either the
1497 * explicitly given filter-spec or inherit the filter-spec from
1498 * the config.
1499 */
1500 if (!filter_options.choice)
1501 partial_clone_get_default_filter_spec(&filter_options);
1502 return;
1503 }
1504
1505 static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
1506 {
1507 struct refspec rs = REFSPEC_INIT_FETCH;
1508 int i;
1509 int exit_code;
1510 int maybe_prune_tags;
1511 int remote_via_config = remote_is_configured(remote, 0);
1512
1513 if (!remote)
1514 die(_("No remote repository specified. Please, specify either a URL or a\n"
1515 "remote name from which new revisions should be fetched."));
1516
1517 gtransport = prepare_transport(remote, 1);
1518
1519 if (prune < 0) {
1520 /* no command line request */
1521 if (0 <= remote->prune)
1522 prune = remote->prune;
1523 else if (0 <= fetch_prune_config)
1524 prune = fetch_prune_config;
1525 else
1526 prune = PRUNE_BY_DEFAULT;
1527 }
1528
1529 if (prune_tags < 0) {
1530 /* no command line request */
1531 if (0 <= remote->prune_tags)
1532 prune_tags = remote->prune_tags;
1533 else if (0 <= fetch_prune_tags_config)
1534 prune_tags = fetch_prune_tags_config;
1535 else
1536 prune_tags = PRUNE_TAGS_BY_DEFAULT;
1537 }
1538
1539 maybe_prune_tags = prune_tags_ok && prune_tags;
1540 if (maybe_prune_tags && remote_via_config)
1541 refspec_append(&remote->fetch, TAG_REFSPEC);
1542
1543 if (maybe_prune_tags && (argc || !remote_via_config))
1544 refspec_append(&rs, TAG_REFSPEC);
1545
1546 for (i = 0; i < argc; i++) {
1547 if (!strcmp(argv[i], "tag")) {
1548 char *tag;
1549 i++;
1550 if (i >= argc)
1551 die(_("You need to specify a tag name."));
1552
1553 tag = xstrfmt("refs/tags/%s:refs/tags/%s",
1554 argv[i], argv[i]);
1555 refspec_append(&rs, tag);
1556 free(tag);
1557 } else {
1558 refspec_append(&rs, argv[i]);
1559 }
1560 }
1561
1562 if (server_options.nr)
1563 gtransport->server_options = &server_options;
1564
1565 sigchain_push_common(unlock_pack_on_signal);
1566 atexit(unlock_pack);
1567 sigchain_push(SIGPIPE, SIG_IGN);
1568 exit_code = do_fetch(gtransport, &rs);
1569 sigchain_pop(SIGPIPE);
1570 refspec_clear(&rs);
1571 transport_disconnect(gtransport);
1572 gtransport = NULL;
1573 return exit_code;
1574 }
1575
1576 int cmd_fetch(int argc, const char **argv, const char *prefix)
1577 {
1578 int i;
1579 struct string_list list = STRING_LIST_INIT_DUP;
1580 struct remote *remote = NULL;
1581 int result = 0;
1582 int prune_tags_ok = 1;
1583 struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
1584
1585 packet_trace_identity("fetch");
1586
1587 fetch_if_missing = 0;
1588
1589 /* Record the command line for the reflog */
1590 strbuf_addstr(&default_rla, "fetch");
1591 for (i = 1; i < argc; i++)
1592 strbuf_addf(&default_rla, " %s", argv[i]);
1593
1594 fetch_config_from_gitmodules(&max_children, &recurse_submodules);
1595 git_config(git_fetch_config, NULL);
1596
1597 argc = parse_options(argc, argv, prefix,
1598 builtin_fetch_options, builtin_fetch_usage, 0);
1599
1600 if (deepen_relative) {
1601 if (deepen_relative < 0)
1602 die(_("Negative depth in --deepen is not supported"));
1603 if (depth)
1604 die(_("--deepen and --depth are mutually exclusive"));
1605 depth = xstrfmt("%d", deepen_relative);
1606 }
1607 if (unshallow) {
1608 if (depth)
1609 die(_("--depth and --unshallow cannot be used together"));
1610 else if (!is_repository_shallow(the_repository))
1611 die(_("--unshallow on a complete repository does not make sense"));
1612 else
1613 depth = xstrfmt("%d", INFINITE_DEPTH);
1614 }
1615
1616 /* no need to be strict, transport_set_option() will validate it again */
1617 if (depth && atoi(depth) < 1)
1618 die(_("depth %s is not a positive number"), depth);
1619 if (depth || deepen_since || deepen_not.nr)
1620 deepen = 1;
1621
1622 if (filter_options.choice && !repository_format_partial_clone)
1623 die("--filter can only be used when extensions.partialClone is set");
1624
1625 if (all) {
1626 if (argc == 1)
1627 die(_("fetch --all does not take a repository argument"));
1628 else if (argc > 1)
1629 die(_("fetch --all does not make sense with refspecs"));
1630 (void) for_each_remote(get_one_remote_for_fetch, &list);
1631 } else if (argc == 0) {
1632 /* No arguments -- use default remote */
1633 remote = remote_get(NULL);
1634 } else if (multiple) {
1635 /* All arguments are assumed to be remotes or groups */
1636 for (i = 0; i < argc; i++)
1637 if (!add_remote_or_group(argv[i], &list))
1638 die(_("No such remote or remote group: %s"), argv[i]);
1639 } else {
1640 /* Single remote or group */
1641 (void) add_remote_or_group(argv[0], &list);
1642 if (list.nr > 1) {
1643 /* More than one remote */
1644 if (argc > 1)
1645 die(_("Fetching a group and specifying refspecs does not make sense"));
1646 } else {
1647 /* Zero or one remotes */
1648 remote = remote_get(argv[0]);
1649 prune_tags_ok = (argc == 1);
1650 argc--;
1651 argv++;
1652 }
1653 }
1654
1655 if (remote) {
1656 if (filter_options.choice || repository_format_partial_clone)
1657 fetch_one_setup_partial(remote);
1658 result = fetch_one(remote, argc, argv, prune_tags_ok);
1659 } else {
1660 if (filter_options.choice)
1661 die(_("--filter can only be used with the remote "
1662 "configured in extensions.partialclone"));
1663 /* TODO should this also die if we have a previous partial-clone? */
1664 result = fetch_multiple(&list);
1665 }
1666
1667 if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
1668 struct argv_array options = ARGV_ARRAY_INIT;
1669
1670 add_options_to_argv(&options);
1671 result = fetch_populated_submodules(the_repository,
1672 &options,
1673 submodule_prefix,
1674 recurse_submodules,
1675 recurse_submodules_default,
1676 verbosity < 0,
1677 max_children);
1678 argv_array_clear(&options);
1679 }
1680
1681 string_list_clear(&list, 0);
1682
1683 close_object_store(the_repository->objects);
1684
1685 argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
1686 if (verbosity < 0)
1687 argv_array_push(&argv_gc_auto, "--quiet");
1688 run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
1689 argv_array_clear(&argv_gc_auto);
1690
1691 return result;
1692 }