0bf8fa7030fec46984503f80c9046b73f57fe648
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
27static 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
35enum {
36 TAGS_UNSET = 0,
37 TAGS_DEFAULT = 1,
38 TAGS_SET = 2
39};
40
41static int fetch_prune_config = -1; /* unspecified */
42static int prune = -1; /* unspecified */
43#define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
44
45static int fetch_prune_tags_config = -1; /* unspecified */
46static int prune_tags = -1; /* unspecified */
47#define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
48
49static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity, deepen_relative;
50static int progress = -1;
51static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
52static int max_children = 1;
53static enum transport_family family;
54static const char *depth;
55static const char *deepen_since;
56static const char *upload_pack;
57static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
58static struct strbuf default_rla = STRBUF_INIT;
59static struct transport *gtransport;
60static struct transport *gsecondary;
61static const char *submodule_prefix = "";
62static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
63static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
64static int shown_url = 0;
65static struct refspec refmap = REFSPEC_INIT_FETCH;
66static struct list_objects_filter_options filter_options;
67static struct string_list server_options = STRING_LIST_INIT_DUP;
68static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
69
70static 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
99static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
100{
101 /*
102 * "git fetch --refmap='' origin foo"
103 * can be used to tell the command not to store anywhere
104 */
105 refspec_append(&refmap, arg);
106
107 return 0;
108}
109
110static struct option builtin_fetch_options[] = {
111 OPT__VERBOSITY(&verbosity),
112 OPT_BOOL(0, "all", &all,
113 N_("fetch from all remotes")),
114 OPT_BOOL('a', "append", &append,
115 N_("append to .git/FETCH_HEAD instead of overwriting")),
116 OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
117 N_("path to upload pack on remote end")),
118 OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
119 OPT_BOOL('m', "multiple", &multiple,
120 N_("fetch from multiple remotes")),
121 OPT_SET_INT('t', "tags", &tags,
122 N_("fetch all tags and associated objects"), TAGS_SET),
123 OPT_SET_INT('n', NULL, &tags,
124 N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
125 OPT_INTEGER('j', "jobs", &max_children,
126 N_("number of submodules fetched in parallel")),
127 OPT_BOOL('p', "prune", &prune,
128 N_("prune remote-tracking branches no longer on remote")),
129 OPT_BOOL('P', "prune-tags", &prune_tags,
130 N_("prune local tags no longer on remote and clobber changed tags")),
131 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
132 N_("control recursive fetching of submodules"),
133 PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
134 OPT_BOOL(0, "dry-run", &dry_run,
135 N_("dry run")),
136 OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
137 OPT_BOOL('u', "update-head-ok", &update_head_ok,
138 N_("allow updating of HEAD ref")),
139 OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
140 OPT_STRING(0, "depth", &depth, N_("depth"),
141 N_("deepen history of shallow clone")),
142 OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
143 N_("deepen history of shallow repository based on time")),
144 OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
145 N_("deepen history of shallow clone, excluding rev")),
146 OPT_INTEGER(0, "deepen", &deepen_relative,
147 N_("deepen history of shallow clone")),
148 OPT_SET_INT_F(0, "unshallow", &unshallow,
149 N_("convert to a complete repository"),
150 1, PARSE_OPT_NONEG),
151 { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
152 N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
153 { OPTION_CALLBACK, 0, "recurse-submodules-default",
154 &recurse_submodules_default, N_("on-demand"),
155 N_("default for recursive fetching of submodules "
156 "(lower priority than config files)"),
157 PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules },
158 OPT_BOOL(0, "update-shallow", &update_shallow,
159 N_("accept refs that update .git/shallow")),
160 { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
161 N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
162 OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
163 OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
164 TRANSPORT_FAMILY_IPV4),
165 OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
166 TRANSPORT_FAMILY_IPV6),
167 OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
168 N_("report that we have only objects reachable from this object")),
169 OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
170 OPT_END()
171};
172
173static void unlock_pack(void)
174{
175 if (gtransport)
176 transport_unlock_pack(gtransport);
177 if (gsecondary)
178 transport_unlock_pack(gsecondary);
179}
180
181static void unlock_pack_on_signal(int signo)
182{
183 unlock_pack();
184 sigchain_pop(signo);
185 raise(signo);
186}
187
188static void add_merge_config(struct ref **head,
189 const struct ref *remote_refs,
190 struct branch *branch,
191 struct ref ***tail)
192{
193 int i;
194
195 for (i = 0; i < branch->merge_nr; i++) {
196 struct ref *rm, **old_tail = *tail;
197 struct refspec_item refspec;
198
199 for (rm = *head; rm; rm = rm->next) {
200 if (branch_merge_matches(branch, i, rm->name)) {
201 rm->fetch_head_status = FETCH_HEAD_MERGE;
202 break;
203 }
204 }
205 if (rm)
206 continue;
207
208 /*
209 * Not fetched to a remote-tracking branch? We need to fetch
210 * it anyway to allow this branch's "branch.$name.merge"
211 * to be honored by 'git pull', but we do not have to
212 * fail if branch.$name.merge is misconfigured to point
213 * at a nonexisting branch. If we were indeed called by
214 * 'git pull', it will notice the misconfiguration because
215 * there is no entry in the resulting FETCH_HEAD marked
216 * for merging.
217 */
218 memset(&refspec, 0, sizeof(refspec));
219 refspec.src = branch->merge[i]->src;
220 get_fetch_map(remote_refs, &refspec, tail, 1);
221 for (rm = *old_tail; rm; rm = rm->next)
222 rm->fetch_head_status = FETCH_HEAD_MERGE;
223 }
224}
225
226static int will_fetch(struct ref **head, const unsigned char *sha1)
227{
228 struct ref *rm = *head;
229 while (rm) {
230 if (hasheq(rm->old_oid.hash, sha1))
231 return 1;
232 rm = rm->next;
233 }
234 return 0;
235}
236
237struct refname_hash_entry {
238 struct hashmap_entry ent; /* must be the first member */
239 struct object_id oid;
240 char refname[FLEX_ARRAY];
241};
242
243static int refname_hash_entry_cmp(const void *hashmap_cmp_fn_data,
244 const void *e1_,
245 const void *e2_,
246 const void *keydata)
247{
248 const struct refname_hash_entry *e1 = e1_;
249 const struct refname_hash_entry *e2 = e2_;
250
251 return strcmp(e1->refname, keydata ? keydata : e2->refname);
252}
253
254static struct refname_hash_entry *refname_hash_add(struct hashmap *map,
255 const char *refname,
256 const struct object_id *oid)
257{
258 struct refname_hash_entry *ent;
259 size_t len = strlen(refname);
260
261 FLEX_ALLOC_MEM(ent, refname, refname, len);
262 hashmap_entry_init(ent, strhash(refname));
263 oidcpy(&ent->oid, oid);
264 hashmap_add(map, ent);
265 return ent;
266}
267
268static int add_one_refname(const char *refname,
269 const struct object_id *oid,
270 int flag, void *cbdata)
271{
272 struct hashmap *refname_map = cbdata;
273
274 (void) refname_hash_add(refname_map, refname, oid);
275 return 0;
276}
277
278static void refname_hash_init(struct hashmap *map)
279{
280 hashmap_init(map, refname_hash_entry_cmp, NULL, 0);
281}
282
283static int refname_hash_exists(struct hashmap *map, const char *refname)
284{
285 return !!hashmap_get_from_hash(map, strhash(refname), refname);
286}
287
288static void clear_item(struct refname_hash_entry *item)
289{
290 oidclr(&item->oid);
291}
292
293static void find_non_local_tags(const struct ref *refs,
294 struct ref **head,
295 struct ref ***tail)
296{
297 struct hashmap existing_refs;
298 struct hashmap remote_refs;
299 struct string_list remote_refs_list = STRING_LIST_INIT_NODUP;
300 struct string_list_item *remote_ref_item;
301 const struct ref *ref;
302 struct refname_hash_entry *item = NULL;
303
304 refname_hash_init(&existing_refs);
305 refname_hash_init(&remote_refs);
306
307 for_each_ref(add_one_refname, &existing_refs);
308 for (ref = refs; ref; ref = ref->next) {
309 if (!starts_with(ref->name, "refs/tags/"))
310 continue;
311
312 /*
313 * The peeled ref always follows the matching base
314 * ref, so if we see a peeled ref that we don't want
315 * to fetch then we can mark the ref entry in the list
316 * as one to ignore by setting util to NULL.
317 */
318 if (ends_with(ref->name, "^{}")) {
319 if (item &&
320 !has_object_file_with_flags(&ref->old_oid,
321 OBJECT_INFO_QUICK) &&
322 !will_fetch(head, ref->old_oid.hash) &&
323 !has_sha1_file_with_flags(item->oid.hash,
324 OBJECT_INFO_QUICK) &&
325 !will_fetch(head, item->oid.hash))
326 clear_item(item);
327 item = NULL;
328 continue;
329 }
330
331 /*
332 * If item is non-NULL here, then we previously saw a
333 * ref not followed by a peeled reference, so we need
334 * to check if it is a lightweight tag that we want to
335 * fetch.
336 */
337 if (item &&
338 !has_sha1_file_with_flags(item->oid.hash, OBJECT_INFO_QUICK) &&
339 !will_fetch(head, item->oid.hash))
340 clear_item(item);
341
342 item = NULL;
343
344 /* skip duplicates and refs that we already have */
345 if (refname_hash_exists(&remote_refs, ref->name) ||
346 refname_hash_exists(&existing_refs, ref->name))
347 continue;
348
349 item = refname_hash_add(&remote_refs, ref->name, &ref->old_oid);
350 string_list_insert(&remote_refs_list, ref->name);
351 }
352 hashmap_free(&existing_refs, 1);
353
354 /*
355 * We may have a final lightweight tag that needs to be
356 * checked to see if it needs fetching.
357 */
358 if (item &&
359 !has_sha1_file_with_flags(item->oid.hash, OBJECT_INFO_QUICK) &&
360 !will_fetch(head, item->oid.hash))
361 clear_item(item);
362
363 /*
364 * For all the tags in the remote_refs_list,
365 * add them to the list of refs to be fetched
366 */
367 for_each_string_list_item(remote_ref_item, &remote_refs_list) {
368 const char *refname = remote_ref_item->string;
369 struct ref *rm;
370
371 item = hashmap_get_from_hash(&remote_refs, strhash(refname), refname);
372 if (!item)
373 BUG("unseen remote ref?");
374
375 /* Unless we have already decided to ignore this item... */
376 if (is_null_oid(&item->oid))
377 continue;
378
379 rm = alloc_ref(item->refname);
380 rm->peer_ref = alloc_ref(item->refname);
381 oidcpy(&rm->old_oid, &item->oid);
382 **tail = rm;
383 *tail = &rm->next;
384 }
385 hashmap_free(&remote_refs, 1);
386 string_list_clear(&remote_refs_list, 0);
387}
388
389static struct ref *get_ref_map(struct remote *remote,
390 const struct ref *remote_refs,
391 struct refspec *rs,
392 int tags, int *autotags)
393{
394 int i;
395 struct ref *rm;
396 struct ref *ref_map = NULL;
397 struct ref **tail = &ref_map;
398
399 /* opportunistically-updated references: */
400 struct ref *orefs = NULL, **oref_tail = &orefs;
401
402 struct hashmap existing_refs;
403
404 if (rs->nr) {
405 struct refspec *fetch_refspec;
406
407 for (i = 0; i < rs->nr; i++) {
408 get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
409 if (rs->items[i].dst && rs->items[i].dst[0])
410 *autotags = 1;
411 }
412 /* Merge everything on the command line (but not --tags) */
413 for (rm = ref_map; rm; rm = rm->next)
414 rm->fetch_head_status = FETCH_HEAD_MERGE;
415
416 /*
417 * For any refs that we happen to be fetching via
418 * command-line arguments, the destination ref might
419 * have been missing or have been different than the
420 * remote-tracking ref that would be derived from the
421 * configured refspec. In these cases, we want to
422 * take the opportunity to update their configured
423 * remote-tracking reference. However, we do not want
424 * to mention these entries in FETCH_HEAD at all, as
425 * they would simply be duplicates of existing
426 * entries, so we set them FETCH_HEAD_IGNORE below.
427 *
428 * We compute these entries now, based only on the
429 * refspecs specified on the command line. But we add
430 * them to the list following the refspecs resulting
431 * from the tags option so that one of the latter,
432 * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
433 * by ref_remove_duplicates() in favor of one of these
434 * opportunistic entries with FETCH_HEAD_IGNORE.
435 */
436 if (refmap.nr)
437 fetch_refspec = &refmap;
438 else
439 fetch_refspec = &remote->fetch;
440
441 for (i = 0; i < fetch_refspec->nr; i++)
442 get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
443 } else if (refmap.nr) {
444 die("--refmap option is only meaningful with command-line refspec(s).");
445 } else {
446 /* Use the defaults */
447 struct branch *branch = branch_get(NULL);
448 int has_merge = branch_has_merge_config(branch);
449 if (remote &&
450 (remote->fetch.nr ||
451 /* Note: has_merge implies non-NULL branch->remote_name */
452 (has_merge && !strcmp(branch->remote_name, remote->name)))) {
453 for (i = 0; i < remote->fetch.nr; i++) {
454 get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
455 if (remote->fetch.items[i].dst &&
456 remote->fetch.items[i].dst[0])
457 *autotags = 1;
458 if (!i && !has_merge && ref_map &&
459 !remote->fetch.items[0].pattern)
460 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
461 }
462 /*
463 * if the remote we're fetching from is the same
464 * as given in branch.<name>.remote, we add the
465 * ref given in branch.<name>.merge, too.
466 *
467 * Note: has_merge implies non-NULL branch->remote_name
468 */
469 if (has_merge &&
470 !strcmp(branch->remote_name, remote->name))
471 add_merge_config(&ref_map, remote_refs, branch, &tail);
472 } else {
473 ref_map = get_remote_ref(remote_refs, "HEAD");
474 if (!ref_map)
475 die(_("Couldn't find remote ref HEAD"));
476 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
477 tail = &ref_map->next;
478 }
479 }
480
481 if (tags == TAGS_SET)
482 /* also fetch all tags */
483 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
484 else if (tags == TAGS_DEFAULT && *autotags)
485 find_non_local_tags(remote_refs, &ref_map, &tail);
486
487 /* Now append any refs to be updated opportunistically: */
488 *tail = orefs;
489 for (rm = orefs; rm; rm = rm->next) {
490 rm->fetch_head_status = FETCH_HEAD_IGNORE;
491 tail = &rm->next;
492 }
493
494 ref_map = ref_remove_duplicates(ref_map);
495
496 refname_hash_init(&existing_refs);
497 for_each_ref(add_one_refname, &existing_refs);
498
499 for (rm = ref_map; rm; rm = rm->next) {
500 if (rm->peer_ref) {
501 const char *refname = rm->peer_ref->name;
502 struct refname_hash_entry *peer_item;
503
504 peer_item = hashmap_get_from_hash(&existing_refs,
505 strhash(refname),
506 refname);
507 if (peer_item) {
508 struct object_id *old_oid = &peer_item->oid;
509 oidcpy(&rm->peer_ref->old_oid, old_oid);
510 }
511 }
512 }
513 hashmap_free(&existing_refs, 1);
514
515 return ref_map;
516}
517
518#define STORE_REF_ERROR_OTHER 1
519#define STORE_REF_ERROR_DF_CONFLICT 2
520
521static int s_update_ref(const char *action,
522 struct ref *ref,
523 int check_old)
524{
525 char *msg;
526 char *rla = getenv("GIT_REFLOG_ACTION");
527 struct ref_transaction *transaction;
528 struct strbuf err = STRBUF_INIT;
529 int ret, df_conflict = 0;
530
531 if (dry_run)
532 return 0;
533 if (!rla)
534 rla = default_rla.buf;
535 msg = xstrfmt("%s: %s", rla, action);
536
537 transaction = ref_transaction_begin(&err);
538 if (!transaction ||
539 ref_transaction_update(transaction, ref->name,
540 &ref->new_oid,
541 check_old ? &ref->old_oid : NULL,
542 0, msg, &err))
543 goto fail;
544
545 ret = ref_transaction_commit(transaction, &err);
546 if (ret) {
547 df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
548 goto fail;
549 }
550
551 ref_transaction_free(transaction);
552 strbuf_release(&err);
553 free(msg);
554 return 0;
555fail:
556 ref_transaction_free(transaction);
557 error("%s", err.buf);
558 strbuf_release(&err);
559 free(msg);
560 return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
561 : STORE_REF_ERROR_OTHER;
562}
563
564static int refcol_width = 10;
565static int compact_format;
566
567static void adjust_refcol_width(const struct ref *ref)
568{
569 int max, rlen, llen, len;
570
571 /* uptodate lines are only shown on high verbosity level */
572 if (!verbosity && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
573 return;
574
575 max = term_columns();
576 rlen = utf8_strwidth(prettify_refname(ref->name));
577
578 llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
579
580 /*
581 * rough estimation to see if the output line is too long and
582 * should not be counted (we can't do precise calculation
583 * anyway because we don't know if the error explanation part
584 * will be printed in update_local_ref)
585 */
586 if (compact_format) {
587 llen = 0;
588 max = max * 2 / 3;
589 }
590 len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
591 if (len >= max)
592 return;
593
594 /*
595 * Not precise calculation for compact mode because '*' can
596 * appear on the left hand side of '->' and shrink the column
597 * back.
598 */
599 if (refcol_width < rlen)
600 refcol_width = rlen;
601}
602
603static void prepare_format_display(struct ref *ref_map)
604{
605 struct ref *rm;
606 const char *format = "full";
607
608 git_config_get_string_const("fetch.output", &format);
609 if (!strcasecmp(format, "full"))
610 compact_format = 0;
611 else if (!strcasecmp(format, "compact"))
612 compact_format = 1;
613 else
614 die(_("configuration fetch.output contains invalid value %s"),
615 format);
616
617 for (rm = ref_map; rm; rm = rm->next) {
618 if (rm->status == REF_STATUS_REJECT_SHALLOW ||
619 !rm->peer_ref ||
620 !strcmp(rm->name, "HEAD"))
621 continue;
622
623 adjust_refcol_width(rm);
624 }
625}
626
627static void print_remote_to_local(struct strbuf *display,
628 const char *remote, const char *local)
629{
630 strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
631}
632
633static int find_and_replace(struct strbuf *haystack,
634 const char *needle,
635 const char *placeholder)
636{
637 const char *p = strstr(haystack->buf, needle);
638 int plen, nlen;
639
640 if (!p)
641 return 0;
642
643 if (p > haystack->buf && p[-1] != '/')
644 return 0;
645
646 plen = strlen(p);
647 nlen = strlen(needle);
648 if (plen > nlen && p[nlen] != '/')
649 return 0;
650
651 strbuf_splice(haystack, p - haystack->buf, nlen,
652 placeholder, strlen(placeholder));
653 return 1;
654}
655
656static void print_compact(struct strbuf *display,
657 const char *remote, const char *local)
658{
659 struct strbuf r = STRBUF_INIT;
660 struct strbuf l = STRBUF_INIT;
661
662 if (!strcmp(remote, local)) {
663 strbuf_addf(display, "%-*s -> *", refcol_width, remote);
664 return;
665 }
666
667 strbuf_addstr(&r, remote);
668 strbuf_addstr(&l, local);
669
670 if (!find_and_replace(&r, local, "*"))
671 find_and_replace(&l, remote, "*");
672 print_remote_to_local(display, r.buf, l.buf);
673
674 strbuf_release(&r);
675 strbuf_release(&l);
676}
677
678static void format_display(struct strbuf *display, char code,
679 const char *summary, const char *error,
680 const char *remote, const char *local,
681 int summary_width)
682{
683 int width = (summary_width + strlen(summary) - gettext_width(summary));
684
685 strbuf_addf(display, "%c %-*s ", code, width, summary);
686 if (!compact_format)
687 print_remote_to_local(display, remote, local);
688 else
689 print_compact(display, remote, local);
690 if (error)
691 strbuf_addf(display, " (%s)", error);
692}
693
694static int update_local_ref(struct ref *ref,
695 const char *remote,
696 const struct ref *remote_ref,
697 struct strbuf *display,
698 int summary_width)
699{
700 struct commit *current = NULL, *updated;
701 enum object_type type;
702 struct branch *current_branch = branch_get(NULL);
703 const char *pretty_ref = prettify_refname(ref->name);
704
705 type = oid_object_info(the_repository, &ref->new_oid, NULL);
706 if (type < 0)
707 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
708
709 if (oideq(&ref->old_oid, &ref->new_oid)) {
710 if (verbosity > 0)
711 format_display(display, '=', _("[up to date]"), NULL,
712 remote, pretty_ref, summary_width);
713 return 0;
714 }
715
716 if (current_branch &&
717 !strcmp(ref->name, current_branch->name) &&
718 !(update_head_ok || is_bare_repository()) &&
719 !is_null_oid(&ref->old_oid)) {
720 /*
721 * If this is the head, and it's not okay to update
722 * the head, and the old value of the head isn't empty...
723 */
724 format_display(display, '!', _("[rejected]"),
725 _("can't fetch in current branch"),
726 remote, pretty_ref, summary_width);
727 return 1;
728 }
729
730 if (!is_null_oid(&ref->old_oid) &&
731 starts_with(ref->name, "refs/tags/")) {
732 if (force || ref->force) {
733 int r;
734 r = s_update_ref("updating tag", ref, 0);
735 format_display(display, r ? '!' : 't', _("[tag update]"),
736 r ? _("unable to update local ref") : NULL,
737 remote, pretty_ref, summary_width);
738 return r;
739 } else {
740 format_display(display, '!', _("[rejected]"), _("would clobber existing tag"),
741 remote, pretty_ref, summary_width);
742 return 1;
743 }
744 }
745
746 current = lookup_commit_reference_gently(the_repository,
747 &ref->old_oid, 1);
748 updated = lookup_commit_reference_gently(the_repository,
749 &ref->new_oid, 1);
750 if (!current || !updated) {
751 const char *msg;
752 const char *what;
753 int r;
754 /*
755 * Nicely describe the new ref we're fetching.
756 * Base this on the remote's ref name, as it's
757 * more likely to follow a standard layout.
758 */
759 const char *name = remote_ref ? remote_ref->name : "";
760 if (starts_with(name, "refs/tags/")) {
761 msg = "storing tag";
762 what = _("[new tag]");
763 } else if (starts_with(name, "refs/heads/")) {
764 msg = "storing head";
765 what = _("[new branch]");
766 } else {
767 msg = "storing ref";
768 what = _("[new ref]");
769 }
770
771 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
772 (recurse_submodules != RECURSE_SUBMODULES_ON))
773 check_for_new_submodule_commits(&ref->new_oid);
774 r = s_update_ref(msg, ref, 0);
775 format_display(display, r ? '!' : '*', what,
776 r ? _("unable to update local ref") : NULL,
777 remote, pretty_ref, summary_width);
778 return r;
779 }
780
781 if (in_merge_bases(current, updated)) {
782 struct strbuf quickref = STRBUF_INIT;
783 int r;
784 strbuf_add_unique_abbrev(&quickref, ¤t->object.oid, DEFAULT_ABBREV);
785 strbuf_addstr(&quickref, "..");
786 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
787 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
788 (recurse_submodules != RECURSE_SUBMODULES_ON))
789 check_for_new_submodule_commits(&ref->new_oid);
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, ¤t->object.oid, DEFAULT_ABBREV);
800 strbuf_addstr(&quickref, "...");
801 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
802 if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
803 (recurse_submodules != RECURSE_SUBMODULES_ON))
804 check_for_new_submodule_commits(&ref->new_oid);
805 r = s_update_ref("forced-update", ref, 1);
806 format_display(display, r ? '!' : '+', quickref.buf,
807 r ? _("unable to update local ref") : _("forced update"),
808 remote, pretty_ref, summary_width);
809 strbuf_release(&quickref);
810 return r;
811 } else {
812 format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
813 remote, pretty_ref, summary_width);
814 return 1;
815 }
816}
817
818static int iterate_ref_map(void *cb_data, struct object_id *oid)
819{
820 struct ref **rm = cb_data;
821 struct ref *ref = *rm;
822
823 while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
824 ref = ref->next;
825 if (!ref)
826 return -1; /* end of the list */
827 *rm = ref->next;
828 oidcpy(oid, &ref->old_oid);
829 return 0;
830}
831
832static int store_updated_refs(const char *raw_url, const char *remote_name,
833 int connectivity_checked, struct ref *ref_map)
834{
835 FILE *fp;
836 struct commit *commit;
837 int url_len, i, rc = 0;
838 struct strbuf note = STRBUF_INIT;
839 const char *what, *kind;
840 struct ref *rm;
841 char *url;
842 const char *filename = dry_run ? "/dev/null" : git_path_fetch_head(the_repository);
843 int want_status;
844 int summary_width = transport_summary_width(ref_map);
845
846 fp = fopen(filename, "a");
847 if (!fp)
848 return error_errno(_("cannot open %s"), filename);
849
850 if (raw_url)
851 url = transport_anonymize_url(raw_url);
852 else
853 url = xstrdup("foreign");
854
855 if (!connectivity_checked) {
856 rm = ref_map;
857 if (check_connected(iterate_ref_map, &rm, NULL)) {
858 rc = error(_("%s did not send all necessary objects\n"), url);
859 goto abort;
860 }
861 }
862
863 prepare_format_display(ref_map);
864
865 /*
866 * We do a pass for each fetch_head_status type in their enum order, so
867 * merged entries are written before not-for-merge. That lets readers
868 * use FETCH_HEAD as a refname to refer to the ref to be merged.
869 */
870 for (want_status = FETCH_HEAD_MERGE;
871 want_status <= FETCH_HEAD_IGNORE;
872 want_status++) {
873 for (rm = ref_map; rm; rm = rm->next) {
874 struct ref *ref = NULL;
875 const char *merge_status_marker = "";
876
877 if (rm->status == REF_STATUS_REJECT_SHALLOW) {
878 if (want_status == FETCH_HEAD_MERGE)
879 warning(_("reject %s because shallow roots are not allowed to be updated"),
880 rm->peer_ref ? rm->peer_ref->name : rm->name);
881 continue;
882 }
883
884 commit = lookup_commit_reference_gently(the_repository,
885 &rm->old_oid,
886 1);
887 if (!commit)
888 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
889
890 if (rm->fetch_head_status != want_status)
891 continue;
892
893 if (rm->peer_ref) {
894 ref = alloc_ref(rm->peer_ref->name);
895 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
896 oidcpy(&ref->new_oid, &rm->old_oid);
897 ref->force = rm->peer_ref->force;
898 }
899
900
901 if (!strcmp(rm->name, "HEAD")) {
902 kind = "";
903 what = "";
904 }
905 else if (starts_with(rm->name, "refs/heads/")) {
906 kind = "branch";
907 what = rm->name + 11;
908 }
909 else if (starts_with(rm->name, "refs/tags/")) {
910 kind = "tag";
911 what = rm->name + 10;
912 }
913 else if (starts_with(rm->name, "refs/remotes/")) {
914 kind = "remote-tracking branch";
915 what = rm->name + 13;
916 }
917 else {
918 kind = "";
919 what = rm->name;
920 }
921
922 url_len = strlen(url);
923 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
924 ;
925 url_len = i + 1;
926 if (4 < i && !strncmp(".git", url + i - 3, 4))
927 url_len = i - 3;
928
929 strbuf_reset(¬e);
930 if (*what) {
931 if (*kind)
932 strbuf_addf(¬e, "%s ", kind);
933 strbuf_addf(¬e, "'%s' of ", what);
934 }
935 switch (rm->fetch_head_status) {
936 case FETCH_HEAD_NOT_FOR_MERGE:
937 merge_status_marker = "not-for-merge";
938 /* fall-through */
939 case FETCH_HEAD_MERGE:
940 fprintf(fp, "%s\t%s\t%s",
941 oid_to_hex(&rm->old_oid),
942 merge_status_marker,
943 note.buf);
944 for (i = 0; i < url_len; ++i)
945 if ('\n' == url[i])
946 fputs("\\n", fp);
947 else
948 fputc(url[i], fp);
949 fputc('\n', fp);
950 break;
951 default:
952 /* do not write anything to FETCH_HEAD */
953 break;
954 }
955
956 strbuf_reset(¬e);
957 if (ref) {
958 rc |= update_local_ref(ref, what, rm, ¬e,
959 summary_width);
960 free(ref);
961 } else
962 format_display(¬e, '*',
963 *kind ? kind : "branch", NULL,
964 *what ? what : "HEAD",
965 "FETCH_HEAD", summary_width);
966 if (note.len) {
967 if (verbosity >= 0 && !shown_url) {
968 fprintf(stderr, _("From %.*s\n"),
969 url_len, url);
970 shown_url = 1;
971 }
972 if (verbosity >= 0)
973 fprintf(stderr, " %s\n", note.buf);
974 }
975 }
976 }
977
978 if (rc & STORE_REF_ERROR_DF_CONFLICT)
979 error(_("some local refs could not be updated; try running\n"
980 " 'git remote prune %s' to remove any old, conflicting "
981 "branches"), remote_name);
982
983 abort:
984 strbuf_release(¬e);
985 free(url);
986 fclose(fp);
987 return rc;
988}
989
990/*
991 * We would want to bypass the object transfer altogether if
992 * everything we are going to fetch already exists and is connected
993 * locally.
994 */
995static int quickfetch(struct ref *ref_map)
996{
997 struct ref *rm = ref_map;
998 struct check_connected_options opt = CHECK_CONNECTED_INIT;
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 opt.quiet = 1;
1010 return check_connected(iterate_ref_map, &rm, &opt);
1011}
1012
1013static int fetch_refs(struct transport *transport, struct ref *ref_map)
1014{
1015 int ret = quickfetch(ref_map);
1016 if (ret)
1017 ret = transport_fetch_refs(transport, ref_map);
1018 if (!ret)
1019 /*
1020 * Keep the new pack's ".keep" file around to allow the caller
1021 * time to update refs to reference the new objects.
1022 */
1023 return 0;
1024 transport_unlock_pack(transport);
1025 return ret;
1026}
1027
1028/* Update local refs based on the ref values fetched from a remote */
1029static int consume_refs(struct transport *transport, struct ref *ref_map)
1030{
1031 int connectivity_checked = transport->smart_options
1032 ? transport->smart_options->connectivity_checked : 0;
1033 int ret = store_updated_refs(transport->url,
1034 transport->remote->name,
1035 connectivity_checked,
1036 ref_map);
1037 transport_unlock_pack(transport);
1038 return ret;
1039}
1040
1041static int prune_refs(struct refspec *rs, struct ref *ref_map,
1042 const char *raw_url)
1043{
1044 int url_len, i, result = 0;
1045 struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
1046 char *url;
1047 int summary_width = transport_summary_width(stale_refs);
1048 const char *dangling_msg = dry_run
1049 ? _(" (%s will become dangling)")
1050 : _(" (%s has become dangling)");
1051
1052 if (raw_url)
1053 url = transport_anonymize_url(raw_url);
1054 else
1055 url = xstrdup("foreign");
1056
1057 url_len = strlen(url);
1058 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
1059 ;
1060
1061 url_len = i + 1;
1062 if (4 < i && !strncmp(".git", url + i - 3, 4))
1063 url_len = i - 3;
1064
1065 if (!dry_run) {
1066 struct string_list refnames = STRING_LIST_INIT_NODUP;
1067
1068 for (ref = stale_refs; ref; ref = ref->next)
1069 string_list_append(&refnames, ref->name);
1070
1071 result = delete_refs("fetch: prune", &refnames, 0);
1072 string_list_clear(&refnames, 0);
1073 }
1074
1075 if (verbosity >= 0) {
1076 for (ref = stale_refs; ref; ref = ref->next) {
1077 struct strbuf sb = STRBUF_INIT;
1078 if (!shown_url) {
1079 fprintf(stderr, _("From %.*s\n"), url_len, url);
1080 shown_url = 1;
1081 }
1082 format_display(&sb, '-', _("[deleted]"), NULL,
1083 _("(none)"), prettify_refname(ref->name),
1084 summary_width);
1085 fprintf(stderr, " %s\n",sb.buf);
1086 strbuf_release(&sb);
1087 warn_dangling_symref(stderr, dangling_msg, ref->name);
1088 }
1089 }
1090
1091 free(url);
1092 free_refs(stale_refs);
1093 return result;
1094}
1095
1096static void check_not_current_branch(struct ref *ref_map)
1097{
1098 struct branch *current_branch = branch_get(NULL);
1099
1100 if (is_bare_repository() || !current_branch)
1101 return;
1102
1103 for (; ref_map; ref_map = ref_map->next)
1104 if (ref_map->peer_ref && !strcmp(current_branch->refname,
1105 ref_map->peer_ref->name))
1106 die(_("Refusing to fetch into current branch %s "
1107 "of non-bare repository"), current_branch->refname);
1108}
1109
1110static int truncate_fetch_head(void)
1111{
1112 const char *filename = git_path_fetch_head(the_repository);
1113 FILE *fp = fopen_for_writing(filename);
1114
1115 if (!fp)
1116 return error_errno(_("cannot open %s"), filename);
1117 fclose(fp);
1118 return 0;
1119}
1120
1121static void set_option(struct transport *transport, const char *name, const char *value)
1122{
1123 int r = transport_set_option(transport, name, value);
1124 if (r < 0)
1125 die(_("Option \"%s\" value \"%s\" is not valid for %s"),
1126 name, value, transport->url);
1127 if (r > 0)
1128 warning(_("Option \"%s\" is ignored for %s\n"),
1129 name, transport->url);
1130}
1131
1132
1133static int add_oid(const char *refname, const struct object_id *oid, int flags,
1134 void *cb_data)
1135{
1136 struct oid_array *oids = cb_data;
1137
1138 oid_array_append(oids, oid);
1139 return 0;
1140}
1141
1142static void add_negotiation_tips(struct git_transport_options *smart_options)
1143{
1144 struct oid_array *oids = xcalloc(1, sizeof(*oids));
1145 int i;
1146
1147 for (i = 0; i < negotiation_tip.nr; i++) {
1148 const char *s = negotiation_tip.items[i].string;
1149 int old_nr;
1150 if (!has_glob_specials(s)) {
1151 struct object_id oid;
1152 if (get_oid(s, &oid))
1153 die("%s is not a valid object", s);
1154 oid_array_append(oids, &oid);
1155 continue;
1156 }
1157 old_nr = oids->nr;
1158 for_each_glob_ref(add_oid, s, oids);
1159 if (old_nr == oids->nr)
1160 warning("Ignoring --negotiation-tip=%s because it does not match any refs",
1161 s);
1162 }
1163 smart_options->negotiation_tips = oids;
1164}
1165
1166static struct transport *prepare_transport(struct remote *remote, int deepen)
1167{
1168 struct transport *transport;
1169 transport = transport_get(remote, NULL);
1170 transport_set_verbosity(transport, verbosity, progress);
1171 transport->family = family;
1172 if (upload_pack)
1173 set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
1174 if (keep)
1175 set_option(transport, TRANS_OPT_KEEP, "yes");
1176 if (depth)
1177 set_option(transport, TRANS_OPT_DEPTH, depth);
1178 if (deepen && deepen_since)
1179 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
1180 if (deepen && deepen_not.nr)
1181 set_option(transport, TRANS_OPT_DEEPEN_NOT,
1182 (const char *)&deepen_not);
1183 if (deepen_relative)
1184 set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
1185 if (update_shallow)
1186 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
1187 if (filter_options.choice) {
1188 set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
1189 filter_options.filter_spec);
1190 set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
1191 }
1192 if (negotiation_tip.nr) {
1193 if (transport->smart_options)
1194 add_negotiation_tips(transport->smart_options);
1195 else
1196 warning("Ignoring --negotiation-tip because the protocol does not support it.");
1197 }
1198 return transport;
1199}
1200
1201static void backfill_tags(struct transport *transport, struct ref *ref_map)
1202{
1203 int cannot_reuse;
1204
1205 /*
1206 * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
1207 * when remote helper is used (setting it to an empty string
1208 * is not unsetting). We could extend the remote helper
1209 * protocol for that, but for now, just force a new connection
1210 * without deepen-since. Similar story for deepen-not.
1211 */
1212 cannot_reuse = transport->cannot_reuse ||
1213 deepen_since || deepen_not.nr;
1214 if (cannot_reuse) {
1215 gsecondary = prepare_transport(transport->remote, 0);
1216 transport = gsecondary;
1217 }
1218
1219 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
1220 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
1221 transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
1222 if (!fetch_refs(transport, ref_map))
1223 consume_refs(transport, ref_map);
1224
1225 if (gsecondary) {
1226 transport_disconnect(gsecondary);
1227 gsecondary = NULL;
1228 }
1229}
1230
1231static int do_fetch(struct transport *transport,
1232 struct refspec *rs)
1233{
1234 struct ref *ref_map;
1235 int autotags = (transport->remote->fetch_tags == 1);
1236 int retcode = 0;
1237 const struct ref *remote_refs;
1238 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
1239
1240 if (tags == TAGS_DEFAULT) {
1241 if (transport->remote->fetch_tags == 2)
1242 tags = TAGS_SET;
1243 if (transport->remote->fetch_tags == -1)
1244 tags = TAGS_UNSET;
1245 }
1246
1247 /* if not appending, truncate FETCH_HEAD */
1248 if (!append && !dry_run) {
1249 retcode = truncate_fetch_head();
1250 if (retcode)
1251 goto cleanup;
1252 }
1253
1254 if (rs->nr)
1255 refspec_ref_prefixes(rs, &ref_prefixes);
1256 else if (transport->remote && transport->remote->fetch.nr)
1257 refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
1258
1259 if (ref_prefixes.argc &&
1260 (tags == TAGS_SET || (tags == TAGS_DEFAULT))) {
1261 argv_array_push(&ref_prefixes, "refs/tags/");
1262 }
1263
1264 remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
1265 argv_array_clear(&ref_prefixes);
1266
1267 ref_map = get_ref_map(transport->remote, remote_refs, rs,
1268 tags, &autotags);
1269 if (!update_head_ok)
1270 check_not_current_branch(ref_map);
1271
1272 if (tags == TAGS_DEFAULT && autotags)
1273 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
1274 if (prune) {
1275 /*
1276 * We only prune based on refspecs specified
1277 * explicitly (via command line or configuration); we
1278 * don't care whether --tags was specified.
1279 */
1280 if (rs->nr) {
1281 prune_refs(rs, ref_map, transport->url);
1282 } else {
1283 prune_refs(&transport->remote->fetch,
1284 ref_map,
1285 transport->url);
1286 }
1287 }
1288 if (fetch_refs(transport, ref_map) || consume_refs(transport, ref_map)) {
1289 free_refs(ref_map);
1290 retcode = 1;
1291 goto cleanup;
1292 }
1293 free_refs(ref_map);
1294
1295 /* if neither --no-tags nor --tags was specified, do automated tag
1296 * following ... */
1297 if (tags == TAGS_DEFAULT && autotags) {
1298 struct ref **tail = &ref_map;
1299 ref_map = NULL;
1300 find_non_local_tags(remote_refs, &ref_map, &tail);
1301 if (ref_map)
1302 backfill_tags(transport, ref_map);
1303 free_refs(ref_map);
1304 }
1305
1306 cleanup:
1307 return retcode;
1308}
1309
1310static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1311{
1312 struct string_list *list = priv;
1313 if (!remote->skip_default_update)
1314 string_list_append(list, remote->name);
1315 return 0;
1316}
1317
1318struct remote_group_data {
1319 const char *name;
1320 struct string_list *list;
1321};
1322
1323static int get_remote_group(const char *key, const char *value, void *priv)
1324{
1325 struct remote_group_data *g = priv;
1326
1327 if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
1328 /* split list by white space */
1329 while (*value) {
1330 size_t wordlen = strcspn(value, " \t\n");
1331
1332 if (wordlen >= 1)
1333 string_list_append_nodup(g->list,
1334 xstrndup(value, wordlen));
1335 value += wordlen + (value[wordlen] != '\0');
1336 }
1337 }
1338
1339 return 0;
1340}
1341
1342static int add_remote_or_group(const char *name, struct string_list *list)
1343{
1344 int prev_nr = list->nr;
1345 struct remote_group_data g;
1346 g.name = name; g.list = list;
1347
1348 git_config(get_remote_group, &g);
1349 if (list->nr == prev_nr) {
1350 struct remote *remote = remote_get(name);
1351 if (!remote_is_configured(remote, 0))
1352 return 0;
1353 string_list_append(list, remote->name);
1354 }
1355 return 1;
1356}
1357
1358static void add_options_to_argv(struct argv_array *argv)
1359{
1360 if (dry_run)
1361 argv_array_push(argv, "--dry-run");
1362 if (prune != -1)
1363 argv_array_push(argv, prune ? "--prune" : "--no-prune");
1364 if (prune_tags != -1)
1365 argv_array_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
1366 if (update_head_ok)
1367 argv_array_push(argv, "--update-head-ok");
1368 if (force)
1369 argv_array_push(argv, "--force");
1370 if (keep)
1371 argv_array_push(argv, "--keep");
1372 if (recurse_submodules == RECURSE_SUBMODULES_ON)
1373 argv_array_push(argv, "--recurse-submodules");
1374 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
1375 argv_array_push(argv, "--recurse-submodules=on-demand");
1376 if (tags == TAGS_SET)
1377 argv_array_push(argv, "--tags");
1378 else if (tags == TAGS_UNSET)
1379 argv_array_push(argv, "--no-tags");
1380 if (verbosity >= 2)
1381 argv_array_push(argv, "-v");
1382 if (verbosity >= 1)
1383 argv_array_push(argv, "-v");
1384 else if (verbosity < 0)
1385 argv_array_push(argv, "-q");
1386
1387}
1388
1389static int fetch_multiple(struct string_list *list)
1390{
1391 int i, result = 0;
1392 struct argv_array argv = ARGV_ARRAY_INIT;
1393
1394 if (!append && !dry_run) {
1395 int errcode = truncate_fetch_head();
1396 if (errcode)
1397 return errcode;
1398 }
1399
1400 argv_array_pushl(&argv, "fetch", "--append", NULL);
1401 add_options_to_argv(&argv);
1402
1403 for (i = 0; i < list->nr; i++) {
1404 const char *name = list->items[i].string;
1405 argv_array_push(&argv, name);
1406 if (verbosity >= 0)
1407 printf(_("Fetching %s\n"), name);
1408 if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
1409 error(_("Could not fetch %s"), name);
1410 result = 1;
1411 }
1412 argv_array_pop(&argv);
1413 }
1414
1415 argv_array_clear(&argv);
1416 return result;
1417}
1418
1419/*
1420 * Fetching from the promisor remote should use the given filter-spec
1421 * or inherit the default filter-spec from the config.
1422 */
1423static inline void fetch_one_setup_partial(struct remote *remote)
1424{
1425 /*
1426 * Explicit --no-filter argument overrides everything, regardless
1427 * of any prior partial clones and fetches.
1428 */
1429 if (filter_options.no_filter)
1430 return;
1431
1432 /*
1433 * If no prior partial clone/fetch and the current fetch DID NOT
1434 * request a partial-fetch, do a normal fetch.
1435 */
1436 if (!repository_format_partial_clone && !filter_options.choice)
1437 return;
1438
1439 /*
1440 * If this is the FIRST partial-fetch request, we enable partial
1441 * on this repo and remember the given filter-spec as the default
1442 * for subsequent fetches to this remote.
1443 */
1444 if (!repository_format_partial_clone && filter_options.choice) {
1445 partial_clone_register(remote->name, &filter_options);
1446 return;
1447 }
1448
1449 /*
1450 * We are currently limited to only ONE promisor remote and only
1451 * allow partial-fetches from the promisor remote.
1452 */
1453 if (strcmp(remote->name, repository_format_partial_clone)) {
1454 if (filter_options.choice)
1455 die(_("--filter can only be used with the remote configured in core.partialClone"));
1456 return;
1457 }
1458
1459 /*
1460 * Do a partial-fetch from the promisor remote using either the
1461 * explicitly given filter-spec or inherit the filter-spec from
1462 * the config.
1463 */
1464 if (!filter_options.choice)
1465 partial_clone_get_default_filter_spec(&filter_options);
1466 return;
1467}
1468
1469static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
1470{
1471 struct refspec rs = REFSPEC_INIT_FETCH;
1472 int i;
1473 int exit_code;
1474 int maybe_prune_tags;
1475 int remote_via_config = remote_is_configured(remote, 0);
1476
1477 if (!remote)
1478 die(_("No remote repository specified. Please, specify either a URL or a\n"
1479 "remote name from which new revisions should be fetched."));
1480
1481 gtransport = prepare_transport(remote, 1);
1482
1483 if (prune < 0) {
1484 /* no command line request */
1485 if (0 <= remote->prune)
1486 prune = remote->prune;
1487 else if (0 <= fetch_prune_config)
1488 prune = fetch_prune_config;
1489 else
1490 prune = PRUNE_BY_DEFAULT;
1491 }
1492
1493 if (prune_tags < 0) {
1494 /* no command line request */
1495 if (0 <= remote->prune_tags)
1496 prune_tags = remote->prune_tags;
1497 else if (0 <= fetch_prune_tags_config)
1498 prune_tags = fetch_prune_tags_config;
1499 else
1500 prune_tags = PRUNE_TAGS_BY_DEFAULT;
1501 }
1502
1503 maybe_prune_tags = prune_tags_ok && prune_tags;
1504 if (maybe_prune_tags && remote_via_config)
1505 refspec_append(&remote->fetch, TAG_REFSPEC);
1506
1507 if (maybe_prune_tags && (argc || !remote_via_config))
1508 refspec_append(&rs, TAG_REFSPEC);
1509
1510 for (i = 0; i < argc; i++) {
1511 if (!strcmp(argv[i], "tag")) {
1512 char *tag;
1513 i++;
1514 if (i >= argc)
1515 die(_("You need to specify a tag name."));
1516
1517 tag = xstrfmt("refs/tags/%s:refs/tags/%s",
1518 argv[i], argv[i]);
1519 refspec_append(&rs, tag);
1520 free(tag);
1521 } else {
1522 refspec_append(&rs, argv[i]);
1523 }
1524 }
1525
1526 if (server_options.nr)
1527 gtransport->server_options = &server_options;
1528
1529 sigchain_push_common(unlock_pack_on_signal);
1530 atexit(unlock_pack);
1531 exit_code = do_fetch(gtransport, &rs);
1532 refspec_clear(&rs);
1533 transport_disconnect(gtransport);
1534 gtransport = NULL;
1535 return exit_code;
1536}
1537
1538int cmd_fetch(int argc, const char **argv, const char *prefix)
1539{
1540 int i;
1541 struct string_list list = STRING_LIST_INIT_DUP;
1542 struct remote *remote = NULL;
1543 int result = 0;
1544 int prune_tags_ok = 1;
1545 struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
1546
1547 packet_trace_identity("fetch");
1548
1549 fetch_if_missing = 0;
1550
1551 /* Record the command line for the reflog */
1552 strbuf_addstr(&default_rla, "fetch");
1553 for (i = 1; i < argc; i++)
1554 strbuf_addf(&default_rla, " %s", argv[i]);
1555
1556 fetch_config_from_gitmodules(&max_children, &recurse_submodules);
1557 git_config(git_fetch_config, NULL);
1558
1559 argc = parse_options(argc, argv, prefix,
1560 builtin_fetch_options, builtin_fetch_usage, 0);
1561
1562 if (deepen_relative) {
1563 if (deepen_relative < 0)
1564 die(_("Negative depth in --deepen is not supported"));
1565 if (depth)
1566 die(_("--deepen and --depth are mutually exclusive"));
1567 depth = xstrfmt("%d", deepen_relative);
1568 }
1569 if (unshallow) {
1570 if (depth)
1571 die(_("--depth and --unshallow cannot be used together"));
1572 else if (!is_repository_shallow(the_repository))
1573 die(_("--unshallow on a complete repository does not make sense"));
1574 else
1575 depth = xstrfmt("%d", INFINITE_DEPTH);
1576 }
1577
1578 /* no need to be strict, transport_set_option() will validate it again */
1579 if (depth && atoi(depth) < 1)
1580 die(_("depth %s is not a positive number"), depth);
1581 if (depth || deepen_since || deepen_not.nr)
1582 deepen = 1;
1583
1584 if (filter_options.choice && !repository_format_partial_clone)
1585 die("--filter can only be used when extensions.partialClone is set");
1586
1587 if (all) {
1588 if (argc == 1)
1589 die(_("fetch --all does not take a repository argument"));
1590 else if (argc > 1)
1591 die(_("fetch --all does not make sense with refspecs"));
1592 (void) for_each_remote(get_one_remote_for_fetch, &list);
1593 } else if (argc == 0) {
1594 /* No arguments -- use default remote */
1595 remote = remote_get(NULL);
1596 } else if (multiple) {
1597 /* All arguments are assumed to be remotes or groups */
1598 for (i = 0; i < argc; i++)
1599 if (!add_remote_or_group(argv[i], &list))
1600 die(_("No such remote or remote group: %s"), argv[i]);
1601 } else {
1602 /* Single remote or group */
1603 (void) add_remote_or_group(argv[0], &list);
1604 if (list.nr > 1) {
1605 /* More than one remote */
1606 if (argc > 1)
1607 die(_("Fetching a group and specifying refspecs does not make sense"));
1608 } else {
1609 /* Zero or one remotes */
1610 remote = remote_get(argv[0]);
1611 prune_tags_ok = (argc == 1);
1612 argc--;
1613 argv++;
1614 }
1615 }
1616
1617 if (remote) {
1618 if (filter_options.choice || repository_format_partial_clone)
1619 fetch_one_setup_partial(remote);
1620 result = fetch_one(remote, argc, argv, prune_tags_ok);
1621 } else {
1622 if (filter_options.choice)
1623 die(_("--filter can only be used with the remote configured in core.partialClone"));
1624 /* TODO should this also die if we have a previous partial-clone? */
1625 result = fetch_multiple(&list);
1626 }
1627
1628 if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
1629 struct argv_array options = ARGV_ARRAY_INIT;
1630
1631 add_options_to_argv(&options);
1632 result = fetch_populated_submodules(the_repository,
1633 &options,
1634 submodule_prefix,
1635 recurse_submodules,
1636 recurse_submodules_default,
1637 verbosity < 0,
1638 max_children);
1639 argv_array_clear(&options);
1640 }
1641
1642 string_list_clear(&list, 0);
1643
1644 close_all_packs(the_repository->objects);
1645
1646 argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
1647 if (verbosity < 0)
1648 argv_array_push(&argv_gc_auto, "--quiet");
1649 run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
1650 argv_array_clear(&argv_gc_auto);
1651
1652 return result;
1653}