promisor-remote: parse remote.*.partialclonefilter
[git/git.git] / builtin / fetch.c
1 /*
2 * "git fetch"
3 */
4 #include "cache.h"
5 #include "config.h"
6 #include "repository.h"
7 #include "refs.h"
8 #include "refspec.h"
9 #include "object-store.h"
10 #include "commit.h"
11 #include "builtin.h"
12 #include "string-list.h"
13 #include "remote.h"
14 #include "transport.h"
15 #include "run-command.h"
16 #include "parse-options.h"
17 #include "sigchain.h"
18 #include "submodule-config.h"
19 #include "submodule.h"
20 #include "connected.h"
21 #include "argv-array.h"
22 #include "utf8.h"
23 #include "packfile.h"
24 #include "list-objects-filter-options.h"
25 #include "commit-reach.h"
26 #include "promisor-remote.h"
27
28 static const char * const builtin_fetch_usage[] = {
29 N_("git fetch [<options>] [<repository> [<refspec>...]]"),
30 N_("git fetch [<options>] <group>"),
31 N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
32 N_("git fetch --all [<options>]"),
33 NULL
34 };
35
36 enum {
37 TAGS_UNSET = 0,
38 TAGS_DEFAULT = 1,
39 TAGS_SET = 2
40 };
41
42 static int fetch_prune_config = -1; /* unspecified */
43 static int prune = -1; /* unspecified */
44 #define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
45
46 static int fetch_prune_tags_config = -1; /* unspecified */
47 static int prune_tags = -1; /* unspecified */
48 #define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
49
50 static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity, deepen_relative;
51 static int progress = -1;
52 static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
53 static int max_children = 1;
54 static enum transport_family family;
55 static const char *depth;
56 static const char *deepen_since;
57 static const char *upload_pack;
58 static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
59 static struct strbuf default_rla = STRBUF_INIT;
60 static struct transport *gtransport;
61 static struct transport *gsecondary;
62 static const char *submodule_prefix = "";
63 static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
64 static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
65 static int shown_url = 0;
66 static struct refspec refmap = REFSPEC_INIT_FETCH;
67 static struct list_objects_filter_options filter_options;
68 static struct string_list server_options = STRING_LIST_INIT_DUP;
69 static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
70
71 static int git_fetch_config(const char *k, const char *v, void *cb)
72 {
73 if (!strcmp(k, "fetch.prune")) {
74 fetch_prune_config = git_config_bool(k, v);
75 return 0;
76 }
77
78 if (!strcmp(k, "fetch.prunetags")) {
79 fetch_prune_tags_config = git_config_bool(k, v);
80 return 0;
81 }
82
83 if (!strcmp(k, "submodule.recurse")) {
84 int r = git_config_bool(k, v) ?
85 RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
86 recurse_submodules = r;
87 }
88
89 if (!strcmp(k, "submodule.fetchjobs")) {
90 max_children = parse_submodule_fetchjobs(k, v);
91 return 0;
92 } else if (!strcmp(k, "fetch.recursesubmodules")) {
93 recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
94 return 0;
95 }
96
97 return git_default_config(k, v, cb);
98 }
99
100 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
101 {
102 BUG_ON_OPT_NEG(unset);
103
104 /*
105 * "git fetch --refmap='' origin foo"
106 * can be used to tell the command not to store anywhere
107 */
108 refspec_append(&refmap, arg);
109
110 return 0;
111 }
112
113 static struct option builtin_fetch_options[] = {
114 OPT__VERBOSITY(&verbosity),
115 OPT_BOOL(0, "all", &all,
116 N_("fetch from all remotes")),
117 OPT_BOOL('a', "append", &append,
118 N_("append to .git/FETCH_HEAD instead of overwriting")),
119 OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
120 N_("path to upload pack on remote end")),
121 OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
122 OPT_BOOL('m', "multiple", &multiple,
123 N_("fetch from multiple remotes")),
124 OPT_SET_INT('t', "tags", &tags,
125 N_("fetch all tags and associated objects"), TAGS_SET),
126 OPT_SET_INT('n', NULL, &tags,
127 N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
128 OPT_INTEGER('j', "jobs", &max_children,
129 N_("number of submodules fetched in parallel")),
130 OPT_BOOL('p', "prune", &prune,
131 N_("prune remote-tracking branches no longer on remote")),
132 OPT_BOOL('P', "prune-tags", &prune_tags,
133 N_("prune local tags no longer on remote and clobber changed tags")),
134 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
135 N_("control recursive fetching of submodules"),
136 PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
137 OPT_BOOL(0, "dry-run", &dry_run,
138 N_("dry run")),
139 OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
140 OPT_BOOL('u', "update-head-ok", &update_head_ok,
141 N_("allow updating of HEAD ref")),
142 OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
143 OPT_STRING(0, "depth", &depth, N_("depth"),
144 N_("deepen history of shallow clone")),
145 OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
146 N_("deepen history of shallow repository based on time")),
147 OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
148 N_("deepen history of shallow clone, excluding rev")),
149 OPT_INTEGER(0, "deepen", &deepen_relative,
150 N_("deepen history of shallow clone")),
151 OPT_SET_INT_F(0, "unshallow", &unshallow,
152 N_("convert to a complete repository"),
153 1, PARSE_OPT_NONEG),
154 { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
155 N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
156 { OPTION_CALLBACK, 0, "recurse-submodules-default",
157 &recurse_submodules_default, N_("on-demand"),
158 N_("default for recursive fetching of submodules "
159 "(lower priority than config files)"),
160 PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules },
161 OPT_BOOL(0, "update-shallow", &update_shallow,
162 N_("accept refs that update .git/shallow")),
163 { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
164 N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
165 OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
166 OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
167 TRANSPORT_FAMILY_IPV4),
168 OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
169 TRANSPORT_FAMILY_IPV6),
170 OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
171 N_("report that we have only objects reachable from this object")),
172 OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
173 OPT_END()
174 };
175
176 static void unlock_pack(void)
177 {
178 if (gtransport)
179 transport_unlock_pack(gtransport);
180 if (gsecondary)
181 transport_unlock_pack(gsecondary);
182 }
183
184 static void unlock_pack_on_signal(int signo)
185 {
186 unlock_pack();
187 sigchain_pop(signo);
188 raise(signo);
189 }
190
191 static void add_merge_config(struct ref **head,
192 const struct ref *remote_refs,
193 struct branch *branch,
194 struct ref ***tail)
195 {
196 int i;
197
198 for (i = 0; i < branch->merge_nr; i++) {
199 struct ref *rm, **old_tail = *tail;
200 struct refspec_item refspec;
201
202 for (rm = *head; rm; rm = rm->next) {
203 if (branch_merge_matches(branch, i, rm->name)) {
204 rm->fetch_head_status = FETCH_HEAD_MERGE;
205 break;
206 }
207 }
208 if (rm)
209 continue;
210
211 /*
212 * Not fetched to a remote-tracking branch? We need to fetch
213 * it anyway to allow this branch's "branch.$name.merge"
214 * to be honored by 'git pull', but we do not have to
215 * fail if branch.$name.merge is misconfigured to point
216 * at a nonexisting branch. If we were indeed called by
217 * 'git pull', it will notice the misconfiguration because
218 * there is no entry in the resulting FETCH_HEAD marked
219 * for merging.
220 */
221 memset(&refspec, 0, sizeof(refspec));
222 refspec.src = branch->merge[i]->src;
223 get_fetch_map(remote_refs, &refspec, tail, 1);
224 for (rm = *old_tail; rm; rm = rm->next)
225 rm->fetch_head_status = FETCH_HEAD_MERGE;
226 }
227 }
228
229 static int will_fetch(struct ref **head, const unsigned char *sha1)
230 {
231 struct ref *rm = *head;
232 while (rm) {
233 if (hasheq(rm->old_oid.hash, sha1))
234 return 1;
235 rm = rm->next;
236 }
237 return 0;
238 }
239
240 struct refname_hash_entry {
241 struct hashmap_entry ent; /* must be the first member */
242 struct object_id oid;
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 find_non_local_tags(const struct ref *refs,
292 struct ref **head,
293 struct ref ***tail)
294 {
295 struct hashmap existing_refs;
296 struct hashmap remote_refs;
297 struct string_list remote_refs_list = STRING_LIST_INIT_NODUP;
298 struct string_list_item *remote_ref_item;
299 const struct ref *ref;
300 struct refname_hash_entry *item = NULL;
301
302 refname_hash_init(&existing_refs);
303 refname_hash_init(&remote_refs);
304
305 for_each_ref(add_one_refname, &existing_refs);
306 for (ref = refs; ref; ref = ref->next) {
307 if (!starts_with(ref->name, "refs/tags/"))
308 continue;
309
310 /*
311 * The peeled ref always follows the matching base
312 * ref, so if we see a peeled ref that we don't want
313 * to fetch then we can mark the ref entry in the list
314 * as one to ignore by setting util to NULL.
315 */
316 if (ends_with(ref->name, "^{}")) {
317 if (item &&
318 !has_object_file_with_flags(&ref->old_oid,
319 OBJECT_INFO_QUICK) &&
320 !will_fetch(head, ref->old_oid.hash) &&
321 !has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
322 !will_fetch(head, item->oid.hash))
323 oidclr(&item->oid);
324 item = NULL;
325 continue;
326 }
327
328 /*
329 * If item is non-NULL here, then we previously saw a
330 * ref not followed by a peeled reference, so we need
331 * to check if it is a lightweight tag that we want to
332 * fetch.
333 */
334 if (item &&
335 !has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
336 !will_fetch(head, item->oid.hash))
337 oidclr(&item->oid);
338
339 item = NULL;
340
341 /* skip duplicates and refs that we already have */
342 if (refname_hash_exists(&remote_refs, ref->name) ||
343 refname_hash_exists(&existing_refs, ref->name))
344 continue;
345
346 item = refname_hash_add(&remote_refs, ref->name, &ref->old_oid);
347 string_list_insert(&remote_refs_list, ref->name);
348 }
349 hashmap_free(&existing_refs, 1);
350
351 /*
352 * We may have a final lightweight tag that needs to be
353 * checked to see if it needs fetching.
354 */
355 if (item &&
356 !has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
357 !will_fetch(head, item->oid.hash))
358 oidclr(&item->oid);
359
360 /*
361 * For all the tags in the remote_refs_list,
362 * add them to the list of refs to be fetched
363 */
364 for_each_string_list_item(remote_ref_item, &remote_refs_list) {
365 const char *refname = remote_ref_item->string;
366
367 item = hashmap_get_from_hash(&remote_refs, strhash(refname), refname);
368 if (!item)
369 BUG("unseen remote ref?");
370
371 /* Unless we have already decided to ignore this item... */
372 if (!is_null_oid(&item->oid)) {
373 struct ref *rm = alloc_ref(item->refname);
374 rm->peer_ref = alloc_ref(item->refname);
375 oidcpy(&rm->old_oid, &item->oid);
376 **tail = rm;
377 *tail = &rm->next;
378 }
379 }
380 hashmap_free(&remote_refs, 1);
381 string_list_clear(&remote_refs_list, 0);
382 }
383
384 static struct ref *get_ref_map(struct remote *remote,
385 const struct ref *remote_refs,
386 struct refspec *rs,
387 int tags, int *autotags)
388 {
389 int i;
390 struct ref *rm;
391 struct ref *ref_map = NULL;
392 struct ref **tail = &ref_map;
393
394 /* opportunistically-updated references: */
395 struct ref *orefs = NULL, **oref_tail = &orefs;
396
397 struct hashmap existing_refs;
398
399 if (rs->nr) {
400 struct refspec *fetch_refspec;
401
402 for (i = 0; i < rs->nr; i++) {
403 get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
404 if (rs->items[i].dst && rs->items[i].dst[0])
405 *autotags = 1;
406 }
407 /* Merge everything on the command line (but not --tags) */
408 for (rm = ref_map; rm; rm = rm->next)
409 rm->fetch_head_status = FETCH_HEAD_MERGE;
410
411 /*
412 * For any refs that we happen to be fetching via
413 * command-line arguments, the destination ref might
414 * have been missing or have been different than the
415 * remote-tracking ref that would be derived from the
416 * configured refspec. In these cases, we want to
417 * take the opportunity to update their configured
418 * remote-tracking reference. However, we do not want
419 * to mention these entries in FETCH_HEAD at all, as
420 * they would simply be duplicates of existing
421 * entries, so we set them FETCH_HEAD_IGNORE below.
422 *
423 * We compute these entries now, based only on the
424 * refspecs specified on the command line. But we add
425 * them to the list following the refspecs resulting
426 * from the tags option so that one of the latter,
427 * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
428 * by ref_remove_duplicates() in favor of one of these
429 * opportunistic entries with FETCH_HEAD_IGNORE.
430 */
431 if (refmap.nr)
432 fetch_refspec = &refmap;
433 else
434 fetch_refspec = &remote->fetch;
435
436 for (i = 0; i < fetch_refspec->nr; i++)
437 get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
438 } else if (refmap.nr) {
439 die("--refmap option is only meaningful with command-line refspec(s).");
440 } else {
441 /* Use the defaults */
442 struct branch *branch = branch_get(NULL);
443 int has_merge = branch_has_merge_config(branch);
444 if (remote &&
445 (remote->fetch.nr ||
446 /* Note: has_merge implies non-NULL branch->remote_name */
447 (has_merge && !strcmp(branch->remote_name, remote->name)))) {
448 for (i = 0; i < remote->fetch.nr; i++) {
449 get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
450 if (remote->fetch.items[i].dst &&
451 remote->fetch.items[i].dst[0])
452 *autotags = 1;
453 if (!i && !has_merge && ref_map &&
454 !remote->fetch.items[0].pattern)
455 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
456 }
457 /*
458 * if the remote we're fetching from is the same
459 * as given in branch.<name>.remote, we add the
460 * ref given in branch.<name>.merge, too.
461 *
462 * Note: has_merge implies non-NULL branch->remote_name
463 */
464 if (has_merge &&
465 !strcmp(branch->remote_name, remote->name))
466 add_merge_config(&ref_map, remote_refs, branch, &tail);
467 } else {
468 ref_map = get_remote_ref(remote_refs, "HEAD");
469 if (!ref_map)
470 die(_("Couldn't find remote ref HEAD"));
471 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
472 tail = &ref_map->next;
473 }
474 }
475
476 if (tags == TAGS_SET)
477 /* also fetch all tags */
478 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
479 else if (tags == TAGS_DEFAULT && *autotags)
480 find_non_local_tags(remote_refs, &ref_map, &tail);
481
482 /* Now append any refs to be updated opportunistically: */
483 *tail = orefs;
484 for (rm = orefs; rm; rm = rm->next) {
485 rm->fetch_head_status = FETCH_HEAD_IGNORE;
486 tail = &rm->next;
487 }
488
489 ref_map = ref_remove_duplicates(ref_map);
490
491 refname_hash_init(&existing_refs);
492 for_each_ref(add_one_refname, &existing_refs);
493
494 for (rm = ref_map; rm; rm = rm->next) {
495 if (rm->peer_ref) {
496 const char *refname = rm->peer_ref->name;
497 struct refname_hash_entry *peer_item;
498
499 peer_item = hashmap_get_from_hash(&existing_refs,
500 strhash(refname),
501 refname);
502 if (peer_item) {
503 struct object_id *old_oid = &peer_item->oid;
504 oidcpy(&rm->peer_ref->old_oid, old_oid);
505 }
506 }
507 }
508 hashmap_free(&existing_refs, 1);
509
510 return ref_map;
511 }
512
513 #define STORE_REF_ERROR_OTHER 1
514 #define STORE_REF_ERROR_DF_CONFLICT 2
515
516 static int s_update_ref(const char *action,
517 struct ref *ref,
518 int check_old)
519 {
520 char *msg;
521 char *rla = getenv("GIT_REFLOG_ACTION");
522 struct ref_transaction *transaction;
523 struct strbuf err = STRBUF_INIT;
524 int ret, df_conflict = 0;
525
526 if (dry_run)
527 return 0;
528 if (!rla)
529 rla = default_rla.buf;
530 msg = xstrfmt("%s: %s", rla, action);
531
532 transaction = ref_transaction_begin(&err);
533 if (!transaction ||
534 ref_transaction_update(transaction, ref->name,
535 &ref->new_oid,
536 check_old ? &ref->old_oid : NULL,
537 0, msg, &err))
538 goto fail;
539
540 ret = ref_transaction_commit(transaction, &err);
541 if (ret) {
542 df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
543 goto fail;
544 }
545
546 ref_transaction_free(transaction);
547 strbuf_release(&err);
548 free(msg);
549 return 0;
550 fail:
551 ref_transaction_free(transaction);
552 error("%s", err.buf);
553 strbuf_release(&err);
554 free(msg);
555 return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
556 : STORE_REF_ERROR_OTHER;
557 }
558
559 static int refcol_width = 10;
560 static int compact_format;
561
562 static void adjust_refcol_width(const struct ref *ref)
563 {
564 int max, rlen, llen, len;
565
566 /* uptodate lines are only shown on high verbosity level */
567 if (!verbosity && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
568 return;
569
570 max = term_columns();
571 rlen = utf8_strwidth(prettify_refname(ref->name));
572
573 llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
574
575 /*
576 * rough estimation to see if the output line is too long and
577 * should not be counted (we can't do precise calculation
578 * anyway because we don't know if the error explanation part
579 * will be printed in update_local_ref)
580 */
581 if (compact_format) {
582 llen = 0;
583 max = max * 2 / 3;
584 }
585 len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
586 if (len >= max)
587 return;
588
589 /*
590 * Not precise calculation for compact mode because '*' can
591 * appear on the left hand side of '->' and shrink the column
592 * back.
593 */
594 if (refcol_width < rlen)
595 refcol_width = rlen;
596 }
597
598 static void prepare_format_display(struct ref *ref_map)
599 {
600 struct ref *rm;
601 const char *format = "full";
602
603 git_config_get_string_const("fetch.output", &format);
604 if (!strcasecmp(format, "full"))
605 compact_format = 0;
606 else if (!strcasecmp(format, "compact"))
607 compact_format = 1;
608 else
609 die(_("configuration fetch.output contains invalid value %s"),
610 format);
611
612 for (rm = ref_map; rm; rm = rm->next) {
613 if (rm->status == REF_STATUS_REJECT_SHALLOW ||
614 !rm->peer_ref ||
615 !strcmp(rm->name, "HEAD"))
616 continue;
617
618 adjust_refcol_width(rm);
619 }
620 }
621
622 static void print_remote_to_local(struct strbuf *display,
623 const char *remote, const char *local)
624 {
625 strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
626 }
627
628 static int find_and_replace(struct strbuf *haystack,
629 const char *needle,
630 const char *placeholder)
631 {
632 const char *p = NULL;
633 int plen, nlen;
634
635 nlen = strlen(needle);
636 if (ends_with(haystack->buf, needle))
637 p = haystack->buf + haystack->len - nlen;
638 else
639 p = strstr(haystack->buf, needle);
640 if (!p)
641 return 0;
642
643 if (p > haystack->buf && p[-1] != '/')
644 return 0;
645
646 plen = strlen(p);
647 if (plen > nlen && p[nlen] != '/')
648 return 0;
649
650 strbuf_splice(haystack, p - haystack->buf, nlen,
651 placeholder, strlen(placeholder));
652 return 1;
653 }
654
655 static void print_compact(struct strbuf *display,
656 const char *remote, const char *local)
657 {
658 struct strbuf r = STRBUF_INIT;
659 struct strbuf l = STRBUF_INIT;
660
661 if (!strcmp(remote, local)) {
662 strbuf_addf(display, "%-*s -> *", refcol_width, remote);
663 return;
664 }
665
666 strbuf_addstr(&r, remote);
667 strbuf_addstr(&l, local);
668
669 if (!find_and_replace(&r, local, "*"))
670 find_and_replace(&l, remote, "*");
671 print_remote_to_local(display, r.buf, l.buf);
672
673 strbuf_release(&r);
674 strbuf_release(&l);
675 }
676
677 static void format_display(struct strbuf *display, char code,
678 const char *summary, const char *error,
679 const char *remote, const char *local,
680 int summary_width)
681 {
682 int width = (summary_width + strlen(summary) - gettext_width(summary));
683
684 strbuf_addf(display, "%c %-*s ", code, width, summary);
685 if (!compact_format)
686 print_remote_to_local(display, remote, local);
687 else
688 print_compact(display, remote, local);
689 if (error)
690 strbuf_addf(display, " (%s)", error);
691 }
692
693 static int update_local_ref(struct ref *ref,
694 const char *remote,
695 const struct ref *remote_ref,
696 struct strbuf *display,
697 int summary_width)
698 {
699 struct commit *current = NULL, *updated;
700 enum object_type type;
701 struct branch *current_branch = branch_get(NULL);
702 const char *pretty_ref = prettify_refname(ref->name);
703
704 type = oid_object_info(the_repository, &ref->new_oid, NULL);
705 if (type < 0)
706 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
707
708 if (oideq(&ref->old_oid, &ref->new_oid)) {
709 if (verbosity > 0)
710 format_display(display, '=', _("[up to date]"), NULL,
711 remote, pretty_ref, summary_width);
712 return 0;
713 }
714
715 if (current_branch &&
716 !strcmp(ref->name, current_branch->name) &&
717 !(update_head_ok || is_bare_repository()) &&
718 !is_null_oid(&ref->old_oid)) {
719 /*
720 * If this is the head, and it's not okay to update
721 * the head, and the old value of the head isn't empty...
722 */
723 format_display(display, '!', _("[rejected]"),
724 _("can't fetch in current branch"),
725 remote, pretty_ref, summary_width);
726 return 1;
727 }
728
729 if (!is_null_oid(&ref->old_oid) &&
730 starts_with(ref->name, "refs/tags/")) {
731 if (force || ref->force) {
732 int r;
733 r = s_update_ref("updating tag", ref, 0);
734 format_display(display, r ? '!' : 't', _("[tag update]"),
735 r ? _("unable to update local ref") : NULL,
736 remote, pretty_ref, summary_width);
737 return r;
738 } else {
739 format_display(display, '!', _("[rejected]"), _("would clobber existing tag"),
740 remote, pretty_ref, summary_width);
741 return 1;
742 }
743 }
744
745 current = lookup_commit_reference_gently(the_repository,
746 &ref->old_oid, 1);
747 updated = lookup_commit_reference_gently(the_repository,
748 &ref->new_oid, 1);
749 if (!current || !updated) {
750 const char *msg;
751 const char *what;
752 int r;
753 /*
754 * Nicely describe the new ref we're fetching.
755 * Base this on the remote's ref name, as it's
756 * more likely to follow a standard layout.
757 */
758 const char *name = remote_ref ? remote_ref->name : "";
759 if (starts_with(name, "refs/tags/")) {
760 msg = "storing tag";
761 what = _("[new tag]");
762 } else if (starts_with(name, "refs/heads/")) {
763 msg = "storing head";
764 what = _("[new branch]");
765 } else {
766 msg = "storing ref";
767 what = _("[new ref]");
768 }
769
770 r = s_update_ref(msg, ref, 0);
771 format_display(display, r ? '!' : '*', what,
772 r ? _("unable to update local ref") : NULL,
773 remote, pretty_ref, summary_width);
774 return r;
775 }
776
777 if (in_merge_bases(current, updated)) {
778 struct strbuf quickref = STRBUF_INIT;
779 int r;
780 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
781 strbuf_addstr(&quickref, "..");
782 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
783 r = s_update_ref("fast-forward", ref, 1);
784 format_display(display, r ? '!' : ' ', quickref.buf,
785 r ? _("unable to update local ref") : NULL,
786 remote, pretty_ref, summary_width);
787 strbuf_release(&quickref);
788 return r;
789 } else if (force || ref->force) {
790 struct strbuf quickref = STRBUF_INIT;
791 int r;
792 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
793 strbuf_addstr(&quickref, "...");
794 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
795 r = s_update_ref("forced-update", ref, 1);
796 format_display(display, r ? '!' : '+', quickref.buf,
797 r ? _("unable to update local ref") : _("forced update"),
798 remote, pretty_ref, summary_width);
799 strbuf_release(&quickref);
800 return r;
801 } else {
802 format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
803 remote, pretty_ref, summary_width);
804 return 1;
805 }
806 }
807
808 static int iterate_ref_map(void *cb_data, struct object_id *oid)
809 {
810 struct ref **rm = cb_data;
811 struct ref *ref = *rm;
812
813 while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
814 ref = ref->next;
815 if (!ref)
816 return -1; /* end of the list */
817 *rm = ref->next;
818 oidcpy(oid, &ref->old_oid);
819 return 0;
820 }
821
822 static int store_updated_refs(const char *raw_url, const char *remote_name,
823 int connectivity_checked, struct ref *ref_map)
824 {
825 FILE *fp;
826 struct commit *commit;
827 int url_len, i, rc = 0;
828 struct strbuf note = STRBUF_INIT;
829 const char *what, *kind;
830 struct ref *rm;
831 char *url;
832 const char *filename = dry_run ? "/dev/null" : git_path_fetch_head(the_repository);
833 int want_status;
834 int summary_width = transport_summary_width(ref_map);
835
836 fp = fopen(filename, "a");
837 if (!fp)
838 return error_errno(_("cannot open %s"), filename);
839
840 if (raw_url)
841 url = transport_anonymize_url(raw_url);
842 else
843 url = xstrdup("foreign");
844
845 if (!connectivity_checked) {
846 rm = ref_map;
847 if (check_connected(iterate_ref_map, &rm, NULL)) {
848 rc = error(_("%s did not send all necessary objects\n"), url);
849 goto abort;
850 }
851 }
852
853 prepare_format_display(ref_map);
854
855 /*
856 * We do a pass for each fetch_head_status type in their enum order, so
857 * merged entries are written before not-for-merge. That lets readers
858 * use FETCH_HEAD as a refname to refer to the ref to be merged.
859 */
860 for (want_status = FETCH_HEAD_MERGE;
861 want_status <= FETCH_HEAD_IGNORE;
862 want_status++) {
863 for (rm = ref_map; rm; rm = rm->next) {
864 struct ref *ref = NULL;
865 const char *merge_status_marker = "";
866
867 if (rm->status == REF_STATUS_REJECT_SHALLOW) {
868 if (want_status == FETCH_HEAD_MERGE)
869 warning(_("reject %s because shallow roots are not allowed to be updated"),
870 rm->peer_ref ? rm->peer_ref->name : rm->name);
871 continue;
872 }
873
874 commit = lookup_commit_reference_gently(the_repository,
875 &rm->old_oid,
876 1);
877 if (!commit)
878 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
879
880 if (rm->fetch_head_status != want_status)
881 continue;
882
883 if (rm->peer_ref) {
884 ref = alloc_ref(rm->peer_ref->name);
885 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
886 oidcpy(&ref->new_oid, &rm->old_oid);
887 ref->force = rm->peer_ref->force;
888 }
889
890 if (recurse_submodules != RECURSE_SUBMODULES_OFF)
891 check_for_new_submodule_commits(&rm->old_oid);
892
893 if (!strcmp(rm->name, "HEAD")) {
894 kind = "";
895 what = "";
896 }
897 else if (starts_with(rm->name, "refs/heads/")) {
898 kind = "branch";
899 what = rm->name + 11;
900 }
901 else if (starts_with(rm->name, "refs/tags/")) {
902 kind = "tag";
903 what = rm->name + 10;
904 }
905 else if (starts_with(rm->name, "refs/remotes/")) {
906 kind = "remote-tracking branch";
907 what = rm->name + 13;
908 }
909 else {
910 kind = "";
911 what = rm->name;
912 }
913
914 url_len = strlen(url);
915 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
916 ;
917 url_len = i + 1;
918 if (4 < i && !strncmp(".git", url + i - 3, 4))
919 url_len = i - 3;
920
921 strbuf_reset(&note);
922 if (*what) {
923 if (*kind)
924 strbuf_addf(&note, "%s ", kind);
925 strbuf_addf(&note, "'%s' of ", what);
926 }
927 switch (rm->fetch_head_status) {
928 case FETCH_HEAD_NOT_FOR_MERGE:
929 merge_status_marker = "not-for-merge";
930 /* fall-through */
931 case FETCH_HEAD_MERGE:
932 fprintf(fp, "%s\t%s\t%s",
933 oid_to_hex(&rm->old_oid),
934 merge_status_marker,
935 note.buf);
936 for (i = 0; i < url_len; ++i)
937 if ('\n' == url[i])
938 fputs("\\n", fp);
939 else
940 fputc(url[i], fp);
941 fputc('\n', fp);
942 break;
943 default:
944 /* do not write anything to FETCH_HEAD */
945 break;
946 }
947
948 strbuf_reset(&note);
949 if (ref) {
950 rc |= update_local_ref(ref, what, rm, &note,
951 summary_width);
952 free(ref);
953 } else
954 format_display(&note, '*',
955 *kind ? kind : "branch", NULL,
956 *what ? what : "HEAD",
957 "FETCH_HEAD", summary_width);
958 if (note.len) {
959 if (verbosity >= 0 && !shown_url) {
960 fprintf(stderr, _("From %.*s\n"),
961 url_len, url);
962 shown_url = 1;
963 }
964 if (verbosity >= 0)
965 fprintf(stderr, " %s\n", note.buf);
966 }
967 }
968 }
969
970 if (rc & STORE_REF_ERROR_DF_CONFLICT)
971 error(_("some local refs could not be updated; try running\n"
972 " 'git remote prune %s' to remove any old, conflicting "
973 "branches"), remote_name);
974
975 abort:
976 strbuf_release(&note);
977 free(url);
978 fclose(fp);
979 return rc;
980 }
981
982 /*
983 * We would want to bypass the object transfer altogether if
984 * everything we are going to fetch already exists and is connected
985 * locally.
986 */
987 static int check_exist_and_connected(struct ref *ref_map)
988 {
989 struct ref *rm = ref_map;
990 struct check_connected_options opt = CHECK_CONNECTED_INIT;
991 struct ref *r;
992
993 /*
994 * If we are deepening a shallow clone we already have these
995 * objects reachable. Running rev-list here will return with
996 * a good (0) exit status and we'll bypass the fetch that we
997 * really need to perform. Claiming failure now will ensure
998 * we perform the network exchange to deepen our history.
999 */
1000 if (deepen)
1001 return -1;
1002
1003 /*
1004 * check_connected() allows objects to merely be promised, but
1005 * we need all direct targets to exist.
1006 */
1007 for (r = rm; r; r = r->next) {
1008 if (!has_object_file(&r->old_oid))
1009 return -1;
1010 }
1011
1012 opt.quiet = 1;
1013 return check_connected(iterate_ref_map, &rm, &opt);
1014 }
1015
1016 static int fetch_refs(struct transport *transport, struct ref *ref_map)
1017 {
1018 int ret = check_exist_and_connected(ref_map);
1019 if (ret)
1020 ret = transport_fetch_refs(transport, ref_map);
1021 if (!ret)
1022 /*
1023 * Keep the new pack's ".keep" file around to allow the caller
1024 * time to update refs to reference the new objects.
1025 */
1026 return 0;
1027 transport_unlock_pack(transport);
1028 return ret;
1029 }
1030
1031 /* Update local refs based on the ref values fetched from a remote */
1032 static int consume_refs(struct transport *transport, struct ref *ref_map)
1033 {
1034 int connectivity_checked = transport->smart_options
1035 ? transport->smart_options->connectivity_checked : 0;
1036 int ret = store_updated_refs(transport->url,
1037 transport->remote->name,
1038 connectivity_checked,
1039 ref_map);
1040 transport_unlock_pack(transport);
1041 return ret;
1042 }
1043
1044 static int prune_refs(struct refspec *rs, struct ref *ref_map,
1045 const char *raw_url)
1046 {
1047 int url_len, i, result = 0;
1048 struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
1049 char *url;
1050 int summary_width = transport_summary_width(stale_refs);
1051 const char *dangling_msg = dry_run
1052 ? _(" (%s will become dangling)")
1053 : _(" (%s has become dangling)");
1054
1055 if (raw_url)
1056 url = transport_anonymize_url(raw_url);
1057 else
1058 url = xstrdup("foreign");
1059
1060 url_len = strlen(url);
1061 for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
1062 ;
1063
1064 url_len = i + 1;
1065 if (4 < i && !strncmp(".git", url + i - 3, 4))
1066 url_len = i - 3;
1067
1068 if (!dry_run) {
1069 struct string_list refnames = STRING_LIST_INIT_NODUP;
1070
1071 for (ref = stale_refs; ref; ref = ref->next)
1072 string_list_append(&refnames, ref->name);
1073
1074 result = delete_refs("fetch: prune", &refnames, 0);
1075 string_list_clear(&refnames, 0);
1076 }
1077
1078 if (verbosity >= 0) {
1079 for (ref = stale_refs; ref; ref = ref->next) {
1080 struct strbuf sb = STRBUF_INIT;
1081 if (!shown_url) {
1082 fprintf(stderr, _("From %.*s\n"), url_len, url);
1083 shown_url = 1;
1084 }
1085 format_display(&sb, '-', _("[deleted]"), NULL,
1086 _("(none)"), prettify_refname(ref->name),
1087 summary_width);
1088 fprintf(stderr, " %s\n",sb.buf);
1089 strbuf_release(&sb);
1090 warn_dangling_symref(stderr, dangling_msg, ref->name);
1091 }
1092 }
1093
1094 free(url);
1095 free_refs(stale_refs);
1096 return result;
1097 }
1098
1099 static void check_not_current_branch(struct ref *ref_map)
1100 {
1101 struct branch *current_branch = branch_get(NULL);
1102
1103 if (is_bare_repository() || !current_branch)
1104 return;
1105
1106 for (; ref_map; ref_map = ref_map->next)
1107 if (ref_map->peer_ref && !strcmp(current_branch->refname,
1108 ref_map->peer_ref->name))
1109 die(_("Refusing to fetch into current branch %s "
1110 "of non-bare repository"), current_branch->refname);
1111 }
1112
1113 static int truncate_fetch_head(void)
1114 {
1115 const char *filename = git_path_fetch_head(the_repository);
1116 FILE *fp = fopen_for_writing(filename);
1117
1118 if (!fp)
1119 return error_errno(_("cannot open %s"), filename);
1120 fclose(fp);
1121 return 0;
1122 }
1123
1124 static void set_option(struct transport *transport, const char *name, const char *value)
1125 {
1126 int r = transport_set_option(transport, name, value);
1127 if (r < 0)
1128 die(_("Option \"%s\" value \"%s\" is not valid for %s"),
1129 name, value, transport->url);
1130 if (r > 0)
1131 warning(_("Option \"%s\" is ignored for %s\n"),
1132 name, transport->url);
1133 }
1134
1135
1136 static int add_oid(const char *refname, const struct object_id *oid, int flags,
1137 void *cb_data)
1138 {
1139 struct oid_array *oids = cb_data;
1140
1141 oid_array_append(oids, oid);
1142 return 0;
1143 }
1144
1145 static void add_negotiation_tips(struct git_transport_options *smart_options)
1146 {
1147 struct oid_array *oids = xcalloc(1, sizeof(*oids));
1148 int i;
1149
1150 for (i = 0; i < negotiation_tip.nr; i++) {
1151 const char *s = negotiation_tip.items[i].string;
1152 int old_nr;
1153 if (!has_glob_specials(s)) {
1154 struct object_id oid;
1155 if (get_oid(s, &oid))
1156 die("%s is not a valid object", s);
1157 oid_array_append(oids, &oid);
1158 continue;
1159 }
1160 old_nr = oids->nr;
1161 for_each_glob_ref(add_oid, s, oids);
1162 if (old_nr == oids->nr)
1163 warning("Ignoring --negotiation-tip=%s because it does not match any refs",
1164 s);
1165 }
1166 smart_options->negotiation_tips = oids;
1167 }
1168
1169 static struct transport *prepare_transport(struct remote *remote, int deepen)
1170 {
1171 struct transport *transport;
1172
1173 transport = transport_get(remote, NULL);
1174 transport_set_verbosity(transport, verbosity, progress);
1175 transport->family = family;
1176 if (upload_pack)
1177 set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
1178 if (keep)
1179 set_option(transport, TRANS_OPT_KEEP, "yes");
1180 if (depth)
1181 set_option(transport, TRANS_OPT_DEPTH, depth);
1182 if (deepen && deepen_since)
1183 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
1184 if (deepen && deepen_not.nr)
1185 set_option(transport, TRANS_OPT_DEEPEN_NOT,
1186 (const char *)&deepen_not);
1187 if (deepen_relative)
1188 set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
1189 if (update_shallow)
1190 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
1191 if (filter_options.choice) {
1192 struct strbuf expanded_filter_spec = STRBUF_INIT;
1193 expand_list_objects_filter_spec(&filter_options,
1194 &expanded_filter_spec);
1195 set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
1196 expanded_filter_spec.buf);
1197 set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
1198 strbuf_release(&expanded_filter_spec);
1199 }
1200 if (negotiation_tip.nr) {
1201 if (transport->smart_options)
1202 add_negotiation_tips(transport->smart_options);
1203 else
1204 warning("Ignoring --negotiation-tip because the protocol does not support it.");
1205 }
1206 return transport;
1207 }
1208
1209 static void backfill_tags(struct transport *transport, struct ref *ref_map)
1210 {
1211 int cannot_reuse;
1212
1213 /*
1214 * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
1215 * when remote helper is used (setting it to an empty string
1216 * is not unsetting). We could extend the remote helper
1217 * protocol for that, but for now, just force a new connection
1218 * without deepen-since. Similar story for deepen-not.
1219 */
1220 cannot_reuse = transport->cannot_reuse ||
1221 deepen_since || deepen_not.nr;
1222 if (cannot_reuse) {
1223 gsecondary = prepare_transport(transport->remote, 0);
1224 transport = gsecondary;
1225 }
1226
1227 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
1228 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
1229 transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
1230 if (!fetch_refs(transport, ref_map))
1231 consume_refs(transport, ref_map);
1232
1233 if (gsecondary) {
1234 transport_disconnect(gsecondary);
1235 gsecondary = NULL;
1236 }
1237 }
1238
1239 static int do_fetch(struct transport *transport,
1240 struct refspec *rs)
1241 {
1242 struct ref *ref_map;
1243 int autotags = (transport->remote->fetch_tags == 1);
1244 int retcode = 0;
1245 const struct ref *remote_refs;
1246 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
1247 int must_list_refs = 1;
1248
1249 if (tags == TAGS_DEFAULT) {
1250 if (transport->remote->fetch_tags == 2)
1251 tags = TAGS_SET;
1252 if (transport->remote->fetch_tags == -1)
1253 tags = TAGS_UNSET;
1254 }
1255
1256 /* if not appending, truncate FETCH_HEAD */
1257 if (!append && !dry_run) {
1258 retcode = truncate_fetch_head();
1259 if (retcode)
1260 goto cleanup;
1261 }
1262
1263 if (rs->nr) {
1264 int i;
1265
1266 refspec_ref_prefixes(rs, &ref_prefixes);
1267
1268 /*
1269 * We can avoid listing refs if all of them are exact
1270 * OIDs
1271 */
1272 must_list_refs = 0;
1273 for (i = 0; i < rs->nr; i++) {
1274 if (!rs->items[i].exact_sha1) {
1275 must_list_refs = 1;
1276 break;
1277 }
1278 }
1279 } else if (transport->remote && transport->remote->fetch.nr)
1280 refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
1281
1282 if (tags == TAGS_SET || tags == TAGS_DEFAULT) {
1283 must_list_refs = 1;
1284 if (ref_prefixes.argc)
1285 argv_array_push(&ref_prefixes, "refs/tags/");
1286 }
1287
1288 if (must_list_refs)
1289 remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
1290 else
1291 remote_refs = NULL;
1292
1293 argv_array_clear(&ref_prefixes);
1294
1295 ref_map = get_ref_map(transport->remote, remote_refs, rs,
1296 tags, &autotags);
1297 if (!update_head_ok)
1298 check_not_current_branch(ref_map);
1299
1300 if (tags == TAGS_DEFAULT && autotags)
1301 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
1302 if (prune) {
1303 /*
1304 * We only prune based on refspecs specified
1305 * explicitly (via command line or configuration); we
1306 * don't care whether --tags was specified.
1307 */
1308 if (rs->nr) {
1309 prune_refs(rs, ref_map, transport->url);
1310 } else {
1311 prune_refs(&transport->remote->fetch,
1312 ref_map,
1313 transport->url);
1314 }
1315 }
1316 if (fetch_refs(transport, ref_map) || consume_refs(transport, ref_map)) {
1317 free_refs(ref_map);
1318 retcode = 1;
1319 goto cleanup;
1320 }
1321 free_refs(ref_map);
1322
1323 /* if neither --no-tags nor --tags was specified, do automated tag
1324 * following ... */
1325 if (tags == TAGS_DEFAULT && autotags) {
1326 struct ref **tail = &ref_map;
1327 ref_map = NULL;
1328 find_non_local_tags(remote_refs, &ref_map, &tail);
1329 if (ref_map)
1330 backfill_tags(transport, ref_map);
1331 free_refs(ref_map);
1332 }
1333
1334 cleanup:
1335 return retcode;
1336 }
1337
1338 static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1339 {
1340 struct string_list *list = priv;
1341 if (!remote->skip_default_update)
1342 string_list_append(list, remote->name);
1343 return 0;
1344 }
1345
1346 struct remote_group_data {
1347 const char *name;
1348 struct string_list *list;
1349 };
1350
1351 static int get_remote_group(const char *key, const char *value, void *priv)
1352 {
1353 struct remote_group_data *g = priv;
1354
1355 if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
1356 /* split list by white space */
1357 while (*value) {
1358 size_t wordlen = strcspn(value, " \t\n");
1359
1360 if (wordlen >= 1)
1361 string_list_append_nodup(g->list,
1362 xstrndup(value, wordlen));
1363 value += wordlen + (value[wordlen] != '\0');
1364 }
1365 }
1366
1367 return 0;
1368 }
1369
1370 static int add_remote_or_group(const char *name, struct string_list *list)
1371 {
1372 int prev_nr = list->nr;
1373 struct remote_group_data g;
1374 g.name = name; g.list = list;
1375
1376 git_config(get_remote_group, &g);
1377 if (list->nr == prev_nr) {
1378 struct remote *remote = remote_get(name);
1379 if (!remote_is_configured(remote, 0))
1380 return 0;
1381 string_list_append(list, remote->name);
1382 }
1383 return 1;
1384 }
1385
1386 static void add_options_to_argv(struct argv_array *argv)
1387 {
1388 if (dry_run)
1389 argv_array_push(argv, "--dry-run");
1390 if (prune != -1)
1391 argv_array_push(argv, prune ? "--prune" : "--no-prune");
1392 if (prune_tags != -1)
1393 argv_array_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
1394 if (update_head_ok)
1395 argv_array_push(argv, "--update-head-ok");
1396 if (force)
1397 argv_array_push(argv, "--force");
1398 if (keep)
1399 argv_array_push(argv, "--keep");
1400 if (recurse_submodules == RECURSE_SUBMODULES_ON)
1401 argv_array_push(argv, "--recurse-submodules");
1402 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
1403 argv_array_push(argv, "--recurse-submodules=on-demand");
1404 if (tags == TAGS_SET)
1405 argv_array_push(argv, "--tags");
1406 else if (tags == TAGS_UNSET)
1407 argv_array_push(argv, "--no-tags");
1408 if (verbosity >= 2)
1409 argv_array_push(argv, "-v");
1410 if (verbosity >= 1)
1411 argv_array_push(argv, "-v");
1412 else if (verbosity < 0)
1413 argv_array_push(argv, "-q");
1414
1415 }
1416
1417 static int fetch_multiple(struct string_list *list)
1418 {
1419 int i, result = 0;
1420 struct argv_array argv = ARGV_ARRAY_INIT;
1421
1422 if (!append && !dry_run) {
1423 int errcode = truncate_fetch_head();
1424 if (errcode)
1425 return errcode;
1426 }
1427
1428 argv_array_pushl(&argv, "fetch", "--append", NULL);
1429 add_options_to_argv(&argv);
1430
1431 for (i = 0; i < list->nr; i++) {
1432 const char *name = list->items[i].string;
1433 argv_array_push(&argv, name);
1434 if (verbosity >= 0)
1435 printf(_("Fetching %s\n"), name);
1436 if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
1437 error(_("Could not fetch %s"), name);
1438 result = 1;
1439 }
1440 argv_array_pop(&argv);
1441 }
1442
1443 argv_array_clear(&argv);
1444 return result;
1445 }
1446
1447 /*
1448 * Fetching from the promisor remote should use the given filter-spec
1449 * or inherit the default filter-spec from the config.
1450 */
1451 static inline void fetch_one_setup_partial(struct remote *remote)
1452 {
1453 /*
1454 * Explicit --no-filter argument overrides everything, regardless
1455 * of any prior partial clones and fetches.
1456 */
1457 if (filter_options.no_filter)
1458 return;
1459
1460 /*
1461 * If no prior partial clone/fetch and the current fetch DID NOT
1462 * request a partial-fetch, do a normal fetch.
1463 */
1464 if (!has_promisor_remote() && !filter_options.choice)
1465 return;
1466
1467 /*
1468 * If this is the FIRST partial-fetch request, we enable partial
1469 * on this repo and remember the given filter-spec as the default
1470 * for subsequent fetches to this remote.
1471 */
1472 if (!has_promisor_remote() && filter_options.choice) {
1473 partial_clone_register(remote->name, &filter_options);
1474 return;
1475 }
1476
1477 /*
1478 * We are currently limited to only ONE promisor remote and only
1479 * allow partial-fetches from the promisor remote.
1480 */
1481 if (!promisor_remote_find(remote->name)) {
1482 if (filter_options.choice)
1483 die(_("--filter can only be used with the remote "
1484 "configured in extensions.partialClone"));
1485 return;
1486 }
1487
1488 /*
1489 * Do a partial-fetch from the promisor remote using either the
1490 * explicitly given filter-spec or inherit the filter-spec from
1491 * the config.
1492 */
1493 if (!filter_options.choice)
1494 partial_clone_get_default_filter_spec(&filter_options, remote->name);
1495 return;
1496 }
1497
1498 static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
1499 {
1500 struct refspec rs = REFSPEC_INIT_FETCH;
1501 int i;
1502 int exit_code;
1503 int maybe_prune_tags;
1504 int remote_via_config = remote_is_configured(remote, 0);
1505
1506 if (!remote)
1507 die(_("No remote repository specified. Please, specify either a URL or a\n"
1508 "remote name from which new revisions should be fetched."));
1509
1510 gtransport = prepare_transport(remote, 1);
1511
1512 if (prune < 0) {
1513 /* no command line request */
1514 if (0 <= remote->prune)
1515 prune = remote->prune;
1516 else if (0 <= fetch_prune_config)
1517 prune = fetch_prune_config;
1518 else
1519 prune = PRUNE_BY_DEFAULT;
1520 }
1521
1522 if (prune_tags < 0) {
1523 /* no command line request */
1524 if (0 <= remote->prune_tags)
1525 prune_tags = remote->prune_tags;
1526 else if (0 <= fetch_prune_tags_config)
1527 prune_tags = fetch_prune_tags_config;
1528 else
1529 prune_tags = PRUNE_TAGS_BY_DEFAULT;
1530 }
1531
1532 maybe_prune_tags = prune_tags_ok && prune_tags;
1533 if (maybe_prune_tags && remote_via_config)
1534 refspec_append(&remote->fetch, TAG_REFSPEC);
1535
1536 if (maybe_prune_tags && (argc || !remote_via_config))
1537 refspec_append(&rs, TAG_REFSPEC);
1538
1539 for (i = 0; i < argc; i++) {
1540 if (!strcmp(argv[i], "tag")) {
1541 char *tag;
1542 i++;
1543 if (i >= argc)
1544 die(_("You need to specify a tag name."));
1545
1546 tag = xstrfmt("refs/tags/%s:refs/tags/%s",
1547 argv[i], argv[i]);
1548 refspec_append(&rs, tag);
1549 free(tag);
1550 } else {
1551 refspec_append(&rs, argv[i]);
1552 }
1553 }
1554
1555 if (server_options.nr)
1556 gtransport->server_options = &server_options;
1557
1558 sigchain_push_common(unlock_pack_on_signal);
1559 atexit(unlock_pack);
1560 sigchain_push(SIGPIPE, SIG_IGN);
1561 exit_code = do_fetch(gtransport, &rs);
1562 sigchain_pop(SIGPIPE);
1563 refspec_clear(&rs);
1564 transport_disconnect(gtransport);
1565 gtransport = NULL;
1566 return exit_code;
1567 }
1568
1569 int cmd_fetch(int argc, const char **argv, const char *prefix)
1570 {
1571 int i;
1572 struct string_list list = STRING_LIST_INIT_DUP;
1573 struct remote *remote = NULL;
1574 int result = 0;
1575 int prune_tags_ok = 1;
1576 struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
1577
1578 packet_trace_identity("fetch");
1579
1580 fetch_if_missing = 0;
1581
1582 /* Record the command line for the reflog */
1583 strbuf_addstr(&default_rla, "fetch");
1584 for (i = 1; i < argc; i++)
1585 strbuf_addf(&default_rla, " %s", argv[i]);
1586
1587 fetch_config_from_gitmodules(&max_children, &recurse_submodules);
1588 git_config(git_fetch_config, NULL);
1589
1590 argc = parse_options(argc, argv, prefix,
1591 builtin_fetch_options, builtin_fetch_usage, 0);
1592
1593 if (deepen_relative) {
1594 if (deepen_relative < 0)
1595 die(_("Negative depth in --deepen is not supported"));
1596 if (depth)
1597 die(_("--deepen and --depth are mutually exclusive"));
1598 depth = xstrfmt("%d", deepen_relative);
1599 }
1600 if (unshallow) {
1601 if (depth)
1602 die(_("--depth and --unshallow cannot be used together"));
1603 else if (!is_repository_shallow(the_repository))
1604 die(_("--unshallow on a complete repository does not make sense"));
1605 else
1606 depth = xstrfmt("%d", INFINITE_DEPTH);
1607 }
1608
1609 /* no need to be strict, transport_set_option() will validate it again */
1610 if (depth && atoi(depth) < 1)
1611 die(_("depth %s is not a positive number"), depth);
1612 if (depth || deepen_since || deepen_not.nr)
1613 deepen = 1;
1614
1615 if (filter_options.choice && !has_promisor_remote())
1616 die("--filter can only be used when extensions.partialClone is set");
1617
1618 if (all) {
1619 if (argc == 1)
1620 die(_("fetch --all does not take a repository argument"));
1621 else if (argc > 1)
1622 die(_("fetch --all does not make sense with refspecs"));
1623 (void) for_each_remote(get_one_remote_for_fetch, &list);
1624 } else if (argc == 0) {
1625 /* No arguments -- use default remote */
1626 remote = remote_get(NULL);
1627 } else if (multiple) {
1628 /* All arguments are assumed to be remotes or groups */
1629 for (i = 0; i < argc; i++)
1630 if (!add_remote_or_group(argv[i], &list))
1631 die(_("No such remote or remote group: %s"), argv[i]);
1632 } else {
1633 /* Single remote or group */
1634 (void) add_remote_or_group(argv[0], &list);
1635 if (list.nr > 1) {
1636 /* More than one remote */
1637 if (argc > 1)
1638 die(_("Fetching a group and specifying refspecs does not make sense"));
1639 } else {
1640 /* Zero or one remotes */
1641 remote = remote_get(argv[0]);
1642 prune_tags_ok = (argc == 1);
1643 argc--;
1644 argv++;
1645 }
1646 }
1647
1648 if (remote) {
1649 if (filter_options.choice || has_promisor_remote())
1650 fetch_one_setup_partial(remote);
1651 result = fetch_one(remote, argc, argv, prune_tags_ok);
1652 } else {
1653 if (filter_options.choice)
1654 die(_("--filter can only be used with the remote "
1655 "configured in extensions.partialclone"));
1656 /* TODO should this also die if we have a previous partial-clone? */
1657 result = fetch_multiple(&list);
1658 }
1659
1660 if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
1661 struct argv_array options = ARGV_ARRAY_INIT;
1662
1663 add_options_to_argv(&options);
1664 result = fetch_populated_submodules(the_repository,
1665 &options,
1666 submodule_prefix,
1667 recurse_submodules,
1668 recurse_submodules_default,
1669 verbosity < 0,
1670 max_children);
1671 argv_array_clear(&options);
1672 }
1673
1674 string_list_clear(&list, 0);
1675
1676 close_all_packs(the_repository->objects);
1677
1678 argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
1679 if (verbosity < 0)
1680 argv_array_push(&argv_gc_auto, "--quiet");
1681 run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
1682 argv_array_clear(&argv_gc_auto);
1683
1684 return result;
1685 }