promisor-remote: parse remote.*.partialclonefilter
[git/git.git] / builtin / fetch.c
CommitLineData
b888d61c
DB
1/*
2 * "git fetch"
3 */
4#include "cache.h"
b2141fc1 5#include "config.h"
e724197f 6#include "repository.h"
b888d61c 7#include "refs.h"
ec0cb496 8#include "refspec.h"
cbd53a21 9#include "object-store.h"
b888d61c
DB
10#include "commit.h"
11#include "builtin.h"
c455c87c 12#include "string-list.h"
b888d61c
DB
13#include "remote.h"
14#include "transport.h"
4191c356 15#include "run-command.h"
83201998 16#include "parse-options.h"
4a16d072 17#include "sigchain.h"
027771fc 18#include "submodule-config.h"
7dce19d3 19#include "submodule.h"
f96400cb 20#include "connected.h"
85556d4e 21#include "argv-array.h"
6bc91f23 22#include "utf8.h"
3836d88a 23#include "packfile.h"
acb0c572 24#include "list-objects-filter-options.h"
64043556 25#include "commit-reach.h"
b14ed5ad 26#include "promisor-remote.h"
b888d61c 27
83201998 28static const char * const builtin_fetch_usage[] = {
719acedb
NTND
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>]"),
83201998
KH
33 NULL
34};
b888d61c 35
83201998
KH
36enum {
37 TAGS_UNSET = 0,
38 TAGS_DEFAULT = 1,
39 TAGS_SET = 2
40};
41
737c5a9c
MS
42static int fetch_prune_config = -1; /* unspecified */
43static int prune = -1; /* unspecified */
44#define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
45
97716d21
ÆAB
46static int fetch_prune_tags_config = -1; /* unspecified */
47static int prune_tags = -1; /* unspecified */
48#define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
49
cccf74e2 50static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity, deepen_relative;
8c69832d 51static int progress = -1;
508ea882 52static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
f20e7c1e 53static int max_children = 1;
c915f11e 54static enum transport_family family;
4191c356 55static const char *depth;
508ea882 56static const char *deepen_since;
83201998 57static const char *upload_pack;
a45a2600 58static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
2d324efa 59static struct strbuf default_rla = STRBUF_INIT;
af234459 60static struct transport *gtransport;
b26ed430 61static struct transport *gsecondary;
7dce19d3 62static const char *submodule_prefix = "";
8c69832d 63static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
e8906a90 64static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
4b3b33a7 65static int shown_url = 0;
e4cffacc 66static struct refspec refmap = REFSPEC_INIT_FETCH;
acb0c572 67static struct list_objects_filter_options filter_options;
5e3548ef 68static struct string_list server_options = STRING_LIST_INIT_DUP;
3390e42a 69static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
e4022ed2 70
737c5a9c
MS
71static 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 }
58f4203e 77
97716d21
ÆAB
78 if (!strcmp(k, "fetch.prunetags")) {
79 fetch_prune_tags_config = git_config_bool(k, v);
80 return 0;
81 }
82
58f4203e
SB
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
f20e7c1e
BW
89 if (!strcmp(k, "submodule.fetchjobs")) {
90 max_children = parse_submodule_fetchjobs(k, v);
91 return 0;
8fa29159
BW
92 } else if (!strcmp(k, "fetch.recursesubmodules")) {
93 recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
94 return 0;
f20e7c1e
BW
95 }
96
72549dfd 97 return git_default_config(k, v, cb);
737c5a9c
MS
98}
99
c5558f80
JH
100static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
101{
517fe807
JK
102 BUG_ON_OPT_NEG(unset);
103
c5558f80
JH
104 /*
105 * "git fetch --refmap='' origin foo"
106 * can be used to tell the command not to store anywhere
107 */
e4cffacc
BW
108 refspec_append(&refmap, arg);
109
c5558f80
JH
110 return 0;
111}
112
83201998 113static struct option builtin_fetch_options[] = {
7f87aff2 114 OPT__VERBOSITY(&verbosity),
d5d09d47
SB
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")),
719acedb
NTND
119 OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
120 N_("path to upload pack on remote end")),
8cd4b7c1 121 OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
d5d09d47
SB
122 OPT_BOOL('m', "multiple", &multiple,
123 N_("fetch from multiple remotes")),
83201998 124 OPT_SET_INT('t', "tags", &tags,
719acedb 125 N_("fetch all tags and associated objects"), TAGS_SET),
e7951290 126 OPT_SET_INT('n', NULL, &tags,
719acedb 127 N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
62104ba1
SB
128 OPT_INTEGER('j', "jobs", &max_children,
129 N_("number of submodules fetched in parallel")),
d5d09d47
SB
130 OPT_BOOL('p', "prune", &prune,
131 N_("prune remote-tracking branches no longer on remote")),
97716d21
ÆAB
132 OPT_BOOL('P', "prune-tags", &prune_tags,
133 N_("prune local tags no longer on remote and clobber changed tags")),
886dc154 134 { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
719acedb 135 N_("control recursive fetching of submodules"),
886dc154 136 PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
d5d09d47
SB
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,
719acedb
NTND
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")),
508ea882
NTND
145 OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
146 N_("deepen history of shallow repository based on time")),
a45a2600 147 OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
6d873865 148 N_("deepen history of shallow clone, excluding rev")),
cccf74e2
NTND
149 OPT_INTEGER(0, "deepen", &deepen_relative,
150 N_("deepen history of shallow clone")),
3e4a67b4
NTND
151 OPT_SET_INT_F(0, "unshallow", &unshallow,
152 N_("convert to a complete repository"),
153 1, PARSE_OPT_NONEG),
719acedb
NTND
154 { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
155 N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
8c69832d
SB
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 },
48d25cae
NTND
161 OPT_BOOL(0, "update-shallow", &update_shallow,
162 N_("accept refs that update .git/shallow")),
c5558f80
JH
163 { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
164 N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
5e3548ef 165 OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
c915f11e
EW
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),
3390e42a
JT
170 OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
171 N_("report that we have only objects reachable from this object")),
acb0c572 172 OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
83201998
KH
173 OPT_END()
174};
175
e4022ed2
SP
176static void unlock_pack(void)
177{
af234459
JH
178 if (gtransport)
179 transport_unlock_pack(gtransport);
b26ed430
JH
180 if (gsecondary)
181 transport_unlock_pack(gsecondary);
e4022ed2
SP
182}
183
184static void unlock_pack_on_signal(int signo)
185{
186 unlock_pack();
4a16d072 187 sigchain_pop(signo);
e4022ed2
SP
188 raise(signo);
189}
b888d61c 190
85682c19 191static void add_merge_config(struct ref **head,
4577370e 192 const struct ref *remote_refs,
85682c19
SP
193 struct branch *branch,
194 struct ref ***tail)
b888d61c 195{
85682c19 196 int i;
b888d61c 197
85682c19
SP
198 for (i = 0; i < branch->merge_nr; i++) {
199 struct ref *rm, **old_tail = *tail;
0ad4a5ff 200 struct refspec_item refspec;
85682c19
SP
201
202 for (rm = *head; rm; rm = rm->next) {
203 if (branch_merge_matches(branch, i, rm->name)) {
900f2814 204 rm->fetch_head_status = FETCH_HEAD_MERGE;
85682c19
SP
205 break;
206 }
b888d61c 207 }
85682c19
SP
208 if (rm)
209 continue;
210
9ad7c5ae 211 /*
8b3f3f84 212 * Not fetched to a remote-tracking branch? We need to fetch
85682c19 213 * it anyway to allow this branch's "branch.$name.merge"
05207a28 214 * to be honored by 'git pull', but we do not have to
9ad7c5ae
JH
215 * fail if branch.$name.merge is misconfigured to point
216 * at a nonexisting branch. If we were indeed called by
05207a28 217 * 'git pull', it will notice the misconfiguration because
9ad7c5ae
JH
218 * there is no entry in the resulting FETCH_HEAD marked
219 * for merging.
85682c19 220 */
8da61a2a 221 memset(&refspec, 0, sizeof(refspec));
85682c19 222 refspec.src = branch->merge[i]->src;
9ad7c5ae 223 get_fetch_map(remote_refs, &refspec, tail, 1);
85682c19 224 for (rm = *old_tail; rm; rm = rm->next)
900f2814 225 rm->fetch_head_status = FETCH_HEAD_MERGE;
b888d61c
DB
226 }
227}
228
a0fbb5a3
MH
229static int will_fetch(struct ref **head, const unsigned char *sha1)
230{
231 struct ref *rm = *head;
232 while (rm) {
e3ff0683 233 if (hasheq(rm->old_oid.hash, sha1))
a0fbb5a3
MH
234 return 1;
235 rm = rm->next;
236 }
237 return 0;
238}
239
e198b3a7
JH
240struct 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
246static 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
257static 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
271static 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
281static void refname_hash_init(struct hashmap *map)
282{
283 hashmap_init(map, refname_hash_entry_cmp, NULL, 0);
284}
285
286static int refname_hash_exists(struct hashmap *map, const char *refname)
287{
288 return !!hashmap_get_from_hash(map, strhash(refname), refname);
289}
290
6d1700d5
BW
291static void find_non_local_tags(const struct ref *refs,
292 struct ref **head,
293 struct ref ***tail)
a0fbb5a3 294{
e198b3a7
JH
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;
a0fbb5a3 299 const struct ref *ref;
e198b3a7
JH
300 struct refname_hash_entry *item = NULL;
301
302 refname_hash_init(&existing_refs);
303 refname_hash_init(&remote_refs);
a0fbb5a3 304
e198b3a7 305 for_each_ref(add_one_refname, &existing_refs);
6d1700d5 306 for (ref = refs; ref; ref = ref->next) {
ad704485 307 if (!starts_with(ref->name, "refs/tags/"))
a0fbb5a3
MH
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 */
ad704485 316 if (ends_with(ref->name, "^{}")) {
5827a035 317 if (item &&
e83e71c5
JT
318 !has_object_file_with_flags(&ref->old_oid,
319 OBJECT_INFO_QUICK) &&
f4e54d02 320 !will_fetch(head, ref->old_oid.hash) &&
98374a07 321 !has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
e198b3a7
JH
322 !will_fetch(head, item->oid.hash))
323 oidclr(&item->oid);
a0fbb5a3
MH
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 */
5827a035 334 if (item &&
98374a07 335 !has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
e198b3a7
JH
336 !will_fetch(head, item->oid.hash))
337 oidclr(&item->oid);
a0fbb5a3
MH
338
339 item = NULL;
340
341 /* skip duplicates and refs that we already have */
e198b3a7
JH
342 if (refname_hash_exists(&remote_refs, ref->name) ||
343 refname_hash_exists(&existing_refs, ref->name))
a0fbb5a3
MH
344 continue;
345
e198b3a7
JH
346 item = refname_hash_add(&remote_refs, ref->name, &ref->old_oid);
347 string_list_insert(&remote_refs_list, ref->name);
a0fbb5a3 348 }
e198b3a7 349 hashmap_free(&existing_refs, 1);
a0fbb5a3
MH
350
351 /*
352 * We may have a final lightweight tag that needs to be
353 * checked to see if it needs fetching.
354 */
5827a035 355 if (item &&
98374a07 356 !has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
e198b3a7
JH
357 !will_fetch(head, item->oid.hash))
358 oidclr(&item->oid);
a0fbb5a3
MH
359
360 /*
e198b3a7 361 * For all the tags in the remote_refs_list,
a0fbb5a3
MH
362 * add them to the list of refs to be fetched
363 */
e198b3a7
JH
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
a0fbb5a3 371 /* Unless we have already decided to ignore this item... */
e198b3a7
JH
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);
a0fbb5a3
MH
376 **tail = rm;
377 *tail = &rm->next;
378 }
379 }
e198b3a7
JH
380 hashmap_free(&remote_refs, 1);
381 string_list_clear(&remote_refs_list, 0);
a0fbb5a3 382}
767f176a 383
6d1700d5
BW
384static struct ref *get_ref_map(struct remote *remote,
385 const struct ref *remote_refs,
65d96c8b 386 struct refspec *rs,
f137a45e 387 int tags, int *autotags)
b888d61c
DB
388{
389 int i;
390 struct ref *rm;
391 struct ref *ref_map = NULL;
392 struct ref **tail = &ref_map;
393
c5a84e92
MH
394 /* opportunistically-updated references: */
395 struct ref *orefs = NULL, **oref_tail = &orefs;
b888d61c 396
e198b3a7 397 struct hashmap existing_refs;
f2690487 398
65d96c8b 399 if (rs->nr) {
c5558f80 400 struct refspec *fetch_refspec;
c5558f80 401
65d96c8b
BW
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])
b888d61c
DB
405 *autotags = 1;
406 }
0281c930 407 /* Merge everything on the command line (but not --tags) */
b888d61c 408 for (rm = ref_map; rm; rm = rm->next)
900f2814 409 rm->fetch_head_status = FETCH_HEAD_MERGE;
f2690487
JK
410
411 /*
0281c930
MH
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.
f2690487 430 */
65d96c8b
BW
431 if (refmap.nr)
432 fetch_refspec = &refmap;
433 else
6d1700d5 434 fetch_refspec = &remote->fetch;
c5558f80 435
65d96c8b
BW
436 for (i = 0; i < fetch_refspec->nr; i++)
437 get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
e4cffacc 438 } else if (refmap.nr) {
c5558f80 439 die("--refmap option is only meaningful with command-line refspec(s).");
b888d61c
DB
440 } else {
441 /* Use the defaults */
85682c19
SP
442 struct branch *branch = branch_get(NULL);
443 int has_merge = branch_has_merge_config(branch);
3ee1757b 444 if (remote &&
e5349abf 445 (remote->fetch.nr ||
f31dbdc7 446 /* Note: has_merge implies non-NULL branch->remote_name */
3ee1757b 447 (has_merge && !strcmp(branch->remote_name, remote->name)))) {
e5349abf
BW
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])
b888d61c 452 *autotags = 1;
85682c19 453 if (!i && !has_merge && ref_map &&
e5349abf 454 !remote->fetch.items[0].pattern)
900f2814 455 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
b888d61c 456 }
da0204df
JS
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.
f31dbdc7
BC
461 *
462 * Note: has_merge implies non-NULL branch->remote_name
da0204df 463 */
9ad7c5ae
JH
464 if (has_merge &&
465 !strcmp(branch->remote_name, remote->name))
85682c19 466 add_merge_config(&ref_map, remote_refs, branch, &tail);
b888d61c
DB
467 } else {
468 ref_map = get_remote_ref(remote_refs, "HEAD");
9ad7c5ae 469 if (!ref_map)
bd4a51fc 470 die(_("Couldn't find remote ref HEAD"));
900f2814 471 ref_map->fetch_head_status = FETCH_HEAD_MERGE;
5aaf7f2a 472 tail = &ref_map->next;
b888d61c
DB
473 }
474 }
0281c930 475
c5a84e92
MH
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)
6d1700d5 480 find_non_local_tags(remote_refs, &ref_map, &tail);
0281c930 481
c5a84e92
MH
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
14b8ced3
BW
489 ref_map = ref_remove_duplicates(ref_map);
490
e198b3a7
JH
491 refname_hash_init(&existing_refs);
492 for_each_ref(add_one_refname, &existing_refs);
493
14b8ced3
BW
494 for (rm = ref_map; rm; rm = rm->next) {
495 if (rm->peer_ref) {
e198b3a7
JH
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);
14b8ced3 502 if (peer_item) {
e198b3a7 503 struct object_id *old_oid = &peer_item->oid;
14b8ced3
BW
504 oidcpy(&rm->peer_ref->old_oid, old_oid);
505 }
506 }
507 }
e198b3a7 508 hashmap_free(&existing_refs, 1);
14b8ced3
BW
509
510 return ref_map;
b888d61c
DB
511}
512
fa250759
JK
513#define STORE_REF_ERROR_OTHER 1
514#define STORE_REF_ERROR_DF_CONFLICT 2
515
b888d61c
DB
516static int s_update_ref(const char *action,
517 struct ref *ref,
518 int check_old)
519{
1412f762 520 char *msg;
b888d61c 521 char *rla = getenv("GIT_REFLOG_ACTION");
cd94f765
RS
522 struct ref_transaction *transaction;
523 struct strbuf err = STRBUF_INIT;
524 int ret, df_conflict = 0;
b888d61c 525
28a15401
JS
526 if (dry_run)
527 return 0;
b888d61c 528 if (!rla)
2d324efa 529 rla = default_rla.buf;
1412f762 530 msg = xstrfmt("%s: %s", rla, action);
cd94f765
RS
531
532 transaction = ref_transaction_begin(&err);
533 if (!transaction ||
1d147bdf 534 ref_transaction_update(transaction, ref->name,
89f3bbdd 535 &ref->new_oid,
536 check_old ? &ref->old_oid : NULL,
1d147bdf 537 0, msg, &err))
cd94f765
RS
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);
1412f762 548 free(msg);
b888d61c 549 return 0;
cd94f765
RS
550fail:
551 ref_transaction_free(transaction);
552 error("%s", err.buf);
553 strbuf_release(&err);
1412f762 554 free(msg);
cd94f765
RS
555 return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
556 : STORE_REF_ERROR_OTHER;
b888d61c
DB
557}
558
6bc91f23 559static int refcol_width = 10;
bc437d10 560static int compact_format;
6bc91f23
NTND
561
562static 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 */
4a7e27e9 567 if (!verbosity && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
6bc91f23
NTND
568 return;
569
570 max = term_columns();
571 rlen = utf8_strwidth(prettify_refname(ref->name));
bc437d10 572
6bc91f23
NTND
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 */
bc437d10
NTND
581 if (compact_format) {
582 llen = 0;
583 max = max * 2 / 3;
584 }
6bc91f23
NTND
585 len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
586 if (len >= max)
587 return;
588
bc437d10
NTND
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 */
6bc91f23
NTND
594 if (refcol_width < rlen)
595 refcol_width = rlen;
596}
597
598static void prepare_format_display(struct ref *ref_map)
599{
600 struct ref *rm;
bc437d10
NTND
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);
6bc91f23
NTND
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}
165f3902 621
bc437d10
NTND
622static 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
628static int find_and_replace(struct strbuf *haystack,
629 const char *needle,
630 const char *placeholder)
631{
dc40b24d 632 const char *p = NULL;
bc437d10
NTND
633 int plen, nlen;
634
dc40b24d
NTND
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);
bc437d10
NTND
640 if (!p)
641 return 0;
642
643 if (p > haystack->buf && p[-1] != '/')
644 return 0;
645
646 plen = strlen(p);
bc437d10
NTND
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
655static 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
d0b39a03
NTND
677static void format_display(struct strbuf *display, char code,
678 const char *summary, const char *error,
901f3d40
JH
679 const char *remote, const char *local,
680 int summary_width)
d0b39a03 681{
901f3d40
JH
682 int width = (summary_width + strlen(summary) - gettext_width(summary));
683
684 strbuf_addf(display, "%c %-*s ", code, width, summary);
bc437d10
NTND
685 if (!compact_format)
686 print_remote_to_local(display, remote, local);
687 else
688 print_compact(display, remote, local);
d0b39a03
NTND
689 if (error)
690 strbuf_addf(display, " (%s)", error);
691}
165f3902 692
b888d61c 693static int update_local_ref(struct ref *ref,
165f3902 694 const char *remote,
6da618d5 695 const struct ref *remote_ref,
901f3d40
JH
696 struct strbuf *display,
697 int summary_width)
b888d61c 698{
b888d61c
DB
699 struct commit *current = NULL, *updated;
700 enum object_type type;
701 struct branch *current_branch = branch_get(NULL);
4577e483 702 const char *pretty_ref = prettify_refname(ref->name);
b888d61c 703
0df8e965 704 type = oid_object_info(the_repository, &ref->new_oid, NULL);
b888d61c 705 if (type < 0)
f4e54d02 706 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
b888d61c 707
4a7e27e9 708 if (oideq(&ref->old_oid, &ref->new_oid)) {
7f87aff2 709 if (verbosity > 0)
d0b39a03 710 format_display(display, '=', _("[up to date]"), NULL,
901f3d40 711 remote, pretty_ref, summary_width);
b888d61c
DB
712 return 0;
713 }
714
b3abdd9d
SP
715 if (current_branch &&
716 !strcmp(ref->name, current_branch->name) &&
b888d61c 717 !(update_head_ok || is_bare_repository()) &&
f4e54d02 718 !is_null_oid(&ref->old_oid)) {
b888d61c
DB
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 */
d0b39a03
NTND
723 format_display(display, '!', _("[rejected]"),
724 _("can't fetch in current branch"),
901f3d40 725 remote, pretty_ref, summary_width);
b888d61c
DB
726 return 1;
727 }
728
f4e54d02 729 if (!is_null_oid(&ref->old_oid) &&
59556548 730 starts_with(ref->name, "refs/tags/")) {
0bc8d71b
ÆAB
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 }
b888d61c
DB
743 }
744
21e1ee8f
SB
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);
b888d61c 749 if (!current || !updated) {
165f3902
NP
750 const char *msg;
751 const char *what;
6315472e 752 int r;
0997adaa
MB
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 : "";
59556548 759 if (starts_with(name, "refs/tags/")) {
b888d61c 760 msg = "storing tag";
f7b3742a 761 what = _("[new tag]");
59556548 762 } else if (starts_with(name, "refs/heads/")) {
b888d61c 763 msg = "storing head";
f7b3742a 764 what = _("[new branch]");
0997adaa
MB
765 } else {
766 msg = "storing ref";
767 what = _("[new ref]");
165f3902
NP
768 }
769
6315472e 770 r = s_update_ref(msg, ref, 0);
d0b39a03
NTND
771 format_display(display, r ? '!' : '*', what,
772 r ? _("unable to update local ref") : NULL,
901f3d40 773 remote, pretty_ref, summary_width);
6315472e 774 return r;
b888d61c
DB
775 }
776
a20efee9 777 if (in_merge_bases(current, updated)) {
bd22d4ff 778 struct strbuf quickref = STRBUF_INIT;
6315472e 779 int r;
30e677e0 780 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
bd22d4ff 781 strbuf_addstr(&quickref, "..");
30e677e0 782 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
a75d7b54 783 r = s_update_ref("fast-forward", ref, 1);
d0b39a03
NTND
784 format_display(display, r ? '!' : ' ', quickref.buf,
785 r ? _("unable to update local ref") : NULL,
901f3d40 786 remote, pretty_ref, summary_width);
bd22d4ff 787 strbuf_release(&quickref);
6315472e 788 return r;
165f3902 789 } else if (force || ref->force) {
bd22d4ff 790 struct strbuf quickref = STRBUF_INIT;
6315472e 791 int r;
30e677e0 792 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
bd22d4ff 793 strbuf_addstr(&quickref, "...");
30e677e0 794 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
6315472e 795 r = s_update_ref("forced-update", ref, 1);
d0b39a03
NTND
796 format_display(display, r ? '!' : '+', quickref.buf,
797 r ? _("unable to update local ref") : _("forced update"),
901f3d40 798 remote, pretty_ref, summary_width);
bd22d4ff 799 strbuf_release(&quickref);
6315472e 800 return r;
165f3902 801 } else {
d0b39a03 802 format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
901f3d40 803 remote, pretty_ref, summary_width);
b888d61c
DB
804 return 1;
805 }
b888d61c
DB
806}
807
6ccac9ee 808static int iterate_ref_map(void *cb_data, struct object_id *oid)
6b67e0dc 809{
f0e278b1
JH
810 struct ref **rm = cb_data;
811 struct ref *ref = *rm;
6b67e0dc 812
4820a33b
NTND
813 while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
814 ref = ref->next;
f0e278b1
JH
815 if (!ref)
816 return -1; /* end of the list */
817 *rm = ref->next;
6ccac9ee 818 oidcpy(oid, &ref->old_oid);
f0e278b1 819 return 0;
6b67e0dc
JH
820}
821
47abd85b 822static int store_updated_refs(const char *raw_url, const char *remote_name,
cf1e7c07 823 int connectivity_checked, struct ref *ref_map)
b888d61c
DB
824{
825 FILE *fp;
826 struct commit *commit;
4b3b33a7 827 int url_len, i, rc = 0;
5914f2d0 828 struct strbuf note = STRBUF_INIT;
b888d61c
DB
829 const char *what, *kind;
830 struct ref *rm;
dcf69262 831 char *url;
102de880 832 const char *filename = dry_run ? "/dev/null" : git_path_fetch_head(the_repository);
900f2814 833 int want_status;
11fd66de 834 int summary_width = transport_summary_width(ref_map);
b888d61c 835
d6617c7c
AGR
836 fp = fopen(filename, "a");
837 if (!fp)
6da31d7f 838 return error_errno(_("cannot open %s"), filename);
47abd85b 839
fb0cc87e
DB
840 if (raw_url)
841 url = transport_anonymize_url(raw_url);
842 else
843 url = xstrdup("foreign");
6b67e0dc 844
cf1e7c07
JT
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 }
9516a598 851 }
6b67e0dc 852
6bc91f23
NTND
853 prepare_format_display(ref_map);
854
96890f4c 855 /*
900f2814
JK
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.
96890f4c 859 */
900f2814
JK
860 for (want_status = FETCH_HEAD_MERGE;
861 want_status <= FETCH_HEAD_IGNORE;
862 want_status++) {
96890f4c
JH
863 for (rm = ref_map; rm; rm = rm->next) {
864 struct ref *ref = NULL;
900f2814 865 const char *merge_status_marker = "";
96890f4c 866
4820a33b
NTND
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
21e1ee8f
SB
874 commit = lookup_commit_reference_gently(the_repository,
875 &rm->old_oid,
bc83266a 876 1);
96890f4c 877 if (!commit)
900f2814 878 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
96890f4c 879
900f2814 880 if (rm->fetch_head_status != want_status)
96890f4c
JH
881 continue;
882
883 if (rm->peer_ref) {
6f687c21 884 ref = alloc_ref(rm->peer_ref->name);
f4e54d02 885 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
886 oidcpy(&ref->new_oid, &rm->old_oid);
96890f4c
JH
887 ref->force = rm->peer_ref->force;
888 }
b888d61c 889
be76c212
SB
890 if (recurse_submodules != RECURSE_SUBMODULES_OFF)
891 check_for_new_submodule_commits(&rm->old_oid);
b888d61c 892
96890f4c
JH
893 if (!strcmp(rm->name, "HEAD")) {
894 kind = "";
895 what = "";
896 }
59556548 897 else if (starts_with(rm->name, "refs/heads/")) {
96890f4c
JH
898 kind = "branch";
899 what = rm->name + 11;
900 }
59556548 901 else if (starts_with(rm->name, "refs/tags/")) {
96890f4c
JH
902 kind = "tag";
903 what = rm->name + 10;
904 }
59556548 905 else if (starts_with(rm->name, "refs/remotes/")) {
96890f4c
JH
906 kind = "remote-tracking branch";
907 what = rm->name + 13;
908 }
909 else {
910 kind = "";
911 what = rm->name;
912 }
b888d61c 913
96890f4c
JH
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 }
900f2814
JK
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",
f4e54d02 933 oid_to_hex(&rm->old_oid),
900f2814
JK
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 }
96890f4c
JH
947
948 strbuf_reset(&note);
949 if (ref) {
901f3d40
JH
950 rc |= update_local_ref(ref, what, rm, &note,
951 summary_width);
96890f4c
JH
952 free(ref);
953 } else
d0b39a03
NTND
954 format_display(&note, '*',
955 *kind ? kind : "branch", NULL,
956 *what ? what : "HEAD",
901f3d40 957 "FETCH_HEAD", summary_width);
96890f4c
JH
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);
165f3902
NP
966 }
967 }
b888d61c 968 }
9516a598 969
fa250759 970 if (rc & STORE_REF_ERROR_DF_CONFLICT)
bd4a51fc 971 error(_("some local refs could not be updated; try running\n"
f3cb169b 972 " 'git remote prune %s' to remove any old, conflicting "
bd4a51fc 973 "branches"), remote_name);
9516a598
TRC
974
975 abort:
5914f2d0 976 strbuf_release(&note);
9516a598
TRC
977 free(url);
978 fclose(fp);
efb98b44 979 return rc;
b888d61c
DB
980}
981
4191c356
SP
982/*
983 * We would want to bypass the object transfer altogether if
d9eb0205 984 * everything we are going to fetch already exists and is connected
4191c356 985 * locally.
4191c356 986 */
35f9e3e5 987static int check_exist_and_connected(struct ref *ref_map)
4191c356 988{
f0e278b1 989 struct ref *rm = ref_map;
7043c707 990 struct check_connected_options opt = CHECK_CONNECTED_INIT;
35f9e3e5 991 struct ref *r;
f0e278b1 992
4191c356
SP
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 */
508ea882 1000 if (deepen)
4191c356 1001 return -1;
35f9e3e5
JT
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
7043c707
JK
1012 opt.quiet = 1;
1013 return check_connected(iterate_ref_map, &rm, &opt);
4191c356
SP
1014}
1015
e2842b39 1016static int fetch_refs(struct transport *transport, struct ref *ref_map)
b888d61c 1017{
35f9e3e5 1018 int ret = check_exist_and_connected(ref_map);
4191c356 1019 if (ret)
e2842b39 1020 ret = transport_fetch_refs(transport, ref_map);
b888d61c 1021 if (!ret)
05c44226
BW
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 */
1032static int consume_refs(struct transport *transport, struct ref *ref_map)
1033{
cf1e7c07
JT
1034 int connectivity_checked = transport->smart_options
1035 ? transport->smart_options->connectivity_checked : 0;
05c44226
BW
1036 int ret = store_updated_refs(transport->url,
1037 transport->remote->name,
cf1e7c07 1038 connectivity_checked,
05c44226 1039 ref_map);
1788c39c 1040 transport_unlock_pack(transport);
b888d61c
DB
1041 return ret;
1042}
1043
def11e71
BW
1044static int prune_refs(struct refspec *rs, struct ref *ref_map,
1045 const char *raw_url)
f360d844 1046{
4b3b33a7 1047 int url_len, i, result = 0;
a2ac50cb 1048 struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
4b3b33a7 1049 char *url;
11fd66de 1050 int summary_width = transport_summary_width(stale_refs);
f360d844 1051 const char *dangling_msg = dry_run
18986d53
NTND
1052 ? _(" (%s will become dangling)")
1053 : _(" (%s has become dangling)");
f360d844 1054
4b3b33a7
TM
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
a087b432
MH
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
64da4199 1074 result = delete_refs("fetch: prune", &refnames, 0);
a087b432
MH
1075 string_list_clear(&refnames, 0);
1076 }
1077
1078 if (verbosity >= 0) {
1079 for (ref = stale_refs; ref; ref = ref->next) {
d0b39a03 1080 struct strbuf sb = STRBUF_INIT;
a087b432
MH
1081 if (!shown_url) {
1082 fprintf(stderr, _("From %.*s\n"), url_len, url);
1083 shown_url = 1;
1084 }
2cb040ba 1085 format_display(&sb, '-', _("[deleted]"), NULL,
901f3d40
JH
1086 _("(none)"), prettify_refname(ref->name),
1087 summary_width);
d0b39a03
NTND
1088 fprintf(stderr, " %s\n",sb.buf);
1089 strbuf_release(&sb);
f360d844
JS
1090 warn_dangling_symref(stderr, dangling_msg, ref->name);
1091 }
1092 }
a087b432 1093
4b3b33a7 1094 free(url);
f360d844
JS
1095 free_refs(stale_refs);
1096 return result;
1097}
1098
8ee5d731
JS
1099static 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))
bd4a51fc
ÆAB
1109 die(_("Refusing to fetch into current branch %s "
1110 "of non-bare repository"), current_branch->refname);
8ee5d731
JS
1111}
1112
e6cc5104
JH
1113static int truncate_fetch_head(void)
1114{
102de880 1115 const char *filename = git_path_fetch_head(the_repository);
ea56518d 1116 FILE *fp = fopen_for_writing(filename);
e6cc5104
JH
1117
1118 if (!fp)
6da31d7f 1119 return error_errno(_("cannot open %s"), filename);
e6cc5104
JH
1120 fclose(fp);
1121 return 0;
1122}
1123
db5723c6
JH
1124static 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
3390e42a
JT
1135
1136static 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
1145static 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
508ea882 1169static struct transport *prepare_transport(struct remote *remote, int deepen)
db5723c6
JH
1170{
1171 struct transport *transport;
87c2d9d3 1172
db5723c6
JH
1173 transport = transport_get(remote, NULL);
1174 transport_set_verbosity(transport, verbosity, progress);
c915f11e 1175 transport->family = family;
db5723c6
JH
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);
508ea882
NTND
1182 if (deepen && deepen_since)
1183 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
a45a2600
NTND
1184 if (deepen && deepen_not.nr)
1185 set_option(transport, TRANS_OPT_DEEPEN_NOT,
1186 (const char *)&deepen_not);
cccf74e2
NTND
1187 if (deepen_relative)
1188 set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
48d25cae
NTND
1189 if (update_shallow)
1190 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
acb0c572 1191 if (filter_options.choice) {
87c2d9d3
JS
1192 struct strbuf expanded_filter_spec = STRBUF_INIT;
1193 expand_list_objects_filter_spec(&filter_options,
1194 &expanded_filter_spec);
acb0c572 1195 set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
87c2d9d3 1196 expanded_filter_spec.buf);
acb0c572 1197 set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
87c2d9d3 1198 strbuf_release(&expanded_filter_spec);
acb0c572 1199 }
3390e42a
JT
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 }
db5723c6
JH
1206 return transport;
1207}
1208
069d5032
JH
1209static void backfill_tags(struct transport *transport, struct ref *ref_map)
1210{
508ea882
NTND
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
a45a2600 1218 * without deepen-since. Similar story for deepen-not.
508ea882 1219 */
a45a2600
NTND
1220 cannot_reuse = transport->cannot_reuse ||
1221 deepen_since || deepen_not.nr;
508ea882
NTND
1222 if (cannot_reuse) {
1223 gsecondary = prepare_transport(transport->remote, 0);
b26ed430
JH
1224 transport = gsecondary;
1225 }
1226
069d5032
JH
1227 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
1228 transport_set_option(transport, TRANS_OPT_DEPTH, "0");
cccf74e2 1229 transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
e2842b39 1230 if (!fetch_refs(transport, ref_map))
05c44226 1231 consume_refs(transport, ref_map);
b26ed430
JH
1232
1233 if (gsecondary) {
1234 transport_disconnect(gsecondary);
1235 gsecondary = NULL;
1236 }
069d5032
JH
1237}
1238
b888d61c 1239static int do_fetch(struct transport *transport,
65a1301f 1240 struct refspec *rs)
b888d61c 1241{
7f98428d 1242 struct ref *ref_map;
b888d61c 1243 int autotags = (transport->remote->fetch_tags == 1);
5b87d8d3 1244 int retcode = 0;
6d1700d5
BW
1245 const struct ref *remote_refs;
1246 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
e70a3030 1247 int must_list_refs = 1;
b1a01e1c 1248
ed368546
DJ
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 }
b888d61c 1255
b888d61c 1256 /* if not appending, truncate FETCH_HEAD */
28a15401 1257 if (!append && !dry_run) {
5b87d8d3
MH
1258 retcode = truncate_fetch_head();
1259 if (retcode)
1260 goto cleanup;
d6617c7c 1261 }
b888d61c 1262
e70a3030
JT
1263 if (rs->nr) {
1264 int i;
1265
6d1700d5 1266 refspec_ref_prefixes(rs, &ref_prefixes);
e70a3030
JT
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)
6d1700d5 1280 refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
b888d61c 1281
e70a3030
JT
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/");
b888d61c
DB
1286 }
1287
e70a3030
JT
1288 if (must_list_refs)
1289 remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
1290 else
1291 remote_refs = NULL;
1292
6d1700d5
BW
1293 argv_array_clear(&ref_prefixes);
1294
1295 ref_map = get_ref_map(transport->remote, remote_refs, rs,
1296 tags, &autotags);
8ee5d731
JS
1297 if (!update_head_ok)
1298 check_not_current_branch(ref_map);
b888d61c 1299
41fa7d2e
SP
1300 if (tags == TAGS_DEFAULT && autotags)
1301 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
ed43de6e 1302 if (prune) {
0838bf47
MH
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 */
65a1301f 1308 if (rs->nr) {
def11e71 1309 prune_refs(rs, ref_map, transport->url);
e8c1e6c7 1310 } else {
def11e71 1311 prune_refs(&transport->remote->fetch,
4b3b33a7
TM
1312 ref_map,
1313 transport->url);
e8c1e6c7 1314 }
ed43de6e 1315 }
e2842b39 1316 if (fetch_refs(transport, ref_map) || consume_refs(transport, ref_map)) {
10a6cc88
TM
1317 free_refs(ref_map);
1318 retcode = 1;
1319 goto cleanup;
1320 }
7f98428d 1321 free_refs(ref_map);
b888d61c
DB
1322
1323 /* if neither --no-tags nor --tags was specified, do automated tag
1324 * following ... */
83201998 1325 if (tags == TAGS_DEFAULT && autotags) {
c50b2b47
SP
1326 struct ref **tail = &ref_map;
1327 ref_map = NULL;
6d1700d5 1328 find_non_local_tags(remote_refs, &ref_map, &tail);
069d5032
JH
1329 if (ref_map)
1330 backfill_tags(transport, ref_map);
b888d61c
DB
1331 free_refs(ref_map);
1332 }
1333
5b87d8d3 1334 cleanup:
5b87d8d3 1335 return retcode;
b888d61c
DB
1336}
1337
9c4a036b
BG
1338static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1339{
1340 struct string_list *list = priv;
7cc91a2f 1341 if (!remote->skip_default_update)
1d2f80fa 1342 string_list_append(list, remote->name);
9c4a036b
BG
1343 return 0;
1344}
1345
1346struct remote_group_data {
1347 const char *name;
1348 struct string_list *list;
1349};
1350
1351static int get_remote_group(const char *key, const char *value, void *priv)
1352{
1353 struct remote_group_data *g = priv;
1354
bc598c32 1355 if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
9c4a036b 1356 /* split list by white space */
9c4a036b 1357 while (*value) {
5f65499f
MH
1358 size_t wordlen = strcspn(value, " \t\n");
1359
e286542d 1360 if (wordlen >= 1)
b7410f61 1361 string_list_append_nodup(g->list,
e286542d
MH
1362 xstrndup(value, wordlen));
1363 value += wordlen + (value[wordlen] != '\0');
9c4a036b
BG
1364 }
1365 }
1366
1367 return 0;
1368}
1369
1370static int add_remote_or_group(const char *name, struct string_list *list)
1371{
1372 int prev_nr = list->nr;
66dbfd55
GV
1373 struct remote_group_data g;
1374 g.name = name; g.list = list;
9c4a036b
BG
1375
1376 git_config(get_remote_group, &g);
1377 if (list->nr == prev_nr) {
674468b3 1378 struct remote *remote = remote_get(name);
e459b073 1379 if (!remote_is_configured(remote, 0))
9c4a036b 1380 return 0;
1d2f80fa 1381 string_list_append(list, remote->name);
9c4a036b
BG
1382 }
1383 return 1;
1384}
1385
85556d4e 1386static void add_options_to_argv(struct argv_array *argv)
9c4a036b 1387{
28a15401 1388 if (dry_run)
85556d4e 1389 argv_array_push(argv, "--dry-run");
90765fa3
MH
1390 if (prune != -1)
1391 argv_array_push(argv, prune ? "--prune" : "--no-prune");
97716d21
ÆAB
1392 if (prune_tags != -1)
1393 argv_array_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
bba5322a 1394 if (update_head_ok)
85556d4e 1395 argv_array_push(argv, "--update-head-ok");
bba5322a 1396 if (force)
85556d4e 1397 argv_array_push(argv, "--force");
bba5322a 1398 if (keep)
85556d4e 1399 argv_array_push(argv, "--keep");
be254a0e 1400 if (recurse_submodules == RECURSE_SUBMODULES_ON)
85556d4e 1401 argv_array_push(argv, "--recurse-submodules");
8f0700dd 1402 else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
85556d4e 1403 argv_array_push(argv, "--recurse-submodules=on-demand");
85566460
DJ
1404 if (tags == TAGS_SET)
1405 argv_array_push(argv, "--tags");
1406 else if (tags == TAGS_UNSET)
1407 argv_array_push(argv, "--no-tags");
9c4a036b 1408 if (verbosity >= 2)
85556d4e 1409 argv_array_push(argv, "-v");
9c4a036b 1410 if (verbosity >= 1)
85556d4e 1411 argv_array_push(argv, "-v");
9c4a036b 1412 else if (verbosity < 0)
85556d4e 1413 argv_array_push(argv, "-q");
7dce19d3
JL
1414
1415}
1416
1417static int fetch_multiple(struct string_list *list)
1418{
1419 int i, result = 0;
85556d4e 1420 struct argv_array argv = ARGV_ARRAY_INIT;
9c4a036b 1421
e6cc5104
JH
1422 if (!append && !dry_run) {
1423 int errcode = truncate_fetch_head();
1424 if (errcode)
1425 return errcode;
1426 }
1427
85556d4e
JK
1428 argv_array_pushl(&argv, "fetch", "--append", NULL);
1429 add_options_to_argv(&argv);
1430
9c4a036b
BG
1431 for (i = 0; i < list->nr; i++) {
1432 const char *name = list->items[i].string;
85556d4e 1433 argv_array_push(&argv, name);
9c4a036b 1434 if (verbosity >= 0)
bd4a51fc 1435 printf(_("Fetching %s\n"), name);
85556d4e 1436 if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
bd4a51fc 1437 error(_("Could not fetch %s"), name);
9c4a036b
BG
1438 result = 1;
1439 }
85556d4e 1440 argv_array_pop(&argv);
9c4a036b
BG
1441 }
1442
85556d4e 1443 argv_array_clear(&argv);
9c4a036b
BG
1444 return result;
1445}
1446
aa57b871
JH
1447/*
1448 * Fetching from the promisor remote should use the given filter-spec
1449 * or inherit the default filter-spec from the config.
1450 */
1451static 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 */
b14ed5ad 1464 if (!has_promisor_remote() && !filter_options.choice)
aa57b871
JH
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 */
b14ed5ad 1472 if (!has_promisor_remote() && filter_options.choice) {
aa57b871
JH
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 */
b14ed5ad 1481 if (!promisor_remote_find(remote->name)) {
aa57b871 1482 if (filter_options.choice)
e0137875 1483 die(_("--filter can only be used with the remote "
32ceace3 1484 "configured in extensions.partialClone"));
aa57b871
JH
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)
fa3d1b63 1494 partial_clone_get_default_filter_spec(&filter_options, remote->name);
aa57b871
JH
1495 return;
1496}
1497
97716d21 1498static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
b888d61c 1499{
d7c8e307
BW
1500 struct refspec rs = REFSPEC_INIT_FETCH;
1501 int i;
7b7f39ea 1502 int exit_code;
6317972c
ÆAB
1503 int maybe_prune_tags;
1504 int remote_via_config = remote_is_configured(remote, 0);
b888d61c 1505
fa685bdf 1506 if (!remote)
bd4a51fc
ÆAB
1507 die(_("No remote repository specified. Please, specify either a URL or a\n"
1508 "remote name from which new revisions should be fetched."));
fa685bdf 1509
508ea882 1510 gtransport = prepare_transport(remote, 1);
737c5a9c
MS
1511
1512 if (prune < 0) {
1513 /* no command line request */
07118832
ÆAB
1514 if (0 <= remote->prune)
1515 prune = remote->prune;
737c5a9c
MS
1516 else if (0 <= fetch_prune_config)
1517 prune = fetch_prune_config;
1518 else
1519 prune = PRUNE_BY_DEFAULT;
1520 }
1521
97716d21
ÆAB
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
6317972c
ÆAB
1532 maybe_prune_tags = prune_tags_ok && prune_tags;
1533 if (maybe_prune_tags && remote_via_config)
95303500 1534 refspec_append(&remote->fetch, TAG_REFSPEC);
97716d21 1535
d7c8e307
BW
1536 if (maybe_prune_tags && (argc || !remote_via_config))
1537 refspec_append(&rs, TAG_REFSPEC);
6317972c 1538
d7c8e307
BW
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]);
b888d61c 1552 }
b888d61c
DB
1553 }
1554
5e3548ef
BW
1555 if (server_options.nr)
1556 gtransport->server_options = &server_options;
1557
57b235a4 1558 sigchain_push_common(unlock_pack_on_signal);
e4022ed2 1559 atexit(unlock_pack);
14358894 1560 sigchain_push(SIGPIPE, SIG_IGN);
65a1301f 1561 exit_code = do_fetch(gtransport, &rs);
14358894 1562 sigchain_pop(SIGPIPE);
d7c8e307 1563 refspec_clear(&rs);
af234459
JH
1564 transport_disconnect(gtransport);
1565 gtransport = NULL;
7b7f39ea 1566 return exit_code;
b888d61c 1567}
9c4a036b
BG
1568
1569int cmd_fetch(int argc, const char **argv, const char *prefix)
1570{
1571 int i;
b7410f61 1572 struct string_list list = STRING_LIST_INIT_DUP;
a1743343 1573 struct remote *remote = NULL;
9c4a036b 1574 int result = 0;
c1a7902f 1575 int prune_tags_ok = 1;
1991006c 1576 struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
9c4a036b 1577
bbc30f99
JK
1578 packet_trace_identity("fetch");
1579
acb0c572
JH
1580 fetch_if_missing = 0;
1581
9c4a036b
BG
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
71a6953d 1587 fetch_config_from_gitmodules(&max_children, &recurse_submodules);
737c5a9c
MS
1588 git_config(git_fetch_config, NULL);
1589
9c4a036b
BG
1590 argc = parse_options(argc, argv, prefix,
1591 builtin_fetch_options, builtin_fetch_usage, 0);
1592
cccf74e2
NTND
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 }
4dcb167f
NTND
1600 if (unshallow) {
1601 if (depth)
1602 die(_("--depth and --unshallow cannot be used together"));
c8813487 1603 else if (!is_repository_shallow(the_repository))
4dcb167f 1604 die(_("--unshallow on a complete repository does not make sense"));
2805bb59
JK
1605 else
1606 depth = xstrfmt("%d", INFINITE_DEPTH);
4dcb167f
NTND
1607 }
1608
5594bcad
NTND
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);
a45a2600 1612 if (depth || deepen_since || deepen_not.nr)
508ea882 1613 deepen = 1;
5594bcad 1614
b14ed5ad 1615 if (filter_options.choice && !has_promisor_remote())
acb0c572
JH
1616 die("--filter can only be used when extensions.partialClone is set");
1617
9c4a036b
BG
1618 if (all) {
1619 if (argc == 1)
bd4a51fc 1620 die(_("fetch --all does not take a repository argument"));
9c4a036b 1621 else if (argc > 1)
bd4a51fc 1622 die(_("fetch --all does not make sense with refspecs"));
9c4a036b 1623 (void) for_each_remote(get_one_remote_for_fetch, &list);
9c4a036b
BG
1624 } else if (argc == 0) {
1625 /* No arguments -- use default remote */
1626 remote = remote_get(NULL);
16679e37
BG
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))
bd4a51fc 1631 die(_("No such remote or remote group: %s"), argv[i]);
9c4a036b
BG
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)
bd4a51fc 1638 die(_("Fetching a group and specifying refspecs does not make sense"));
9c4a036b
BG
1639 } else {
1640 /* Zero or one remotes */
1641 remote = remote_get(argv[0]);
c1a7902f 1642 prune_tags_ok = (argc == 1);
a1743343
JT
1643 argc--;
1644 argv++;
9c4a036b
BG
1645 }
1646 }
1647
acb0c572 1648 if (remote) {
b14ed5ad 1649 if (filter_options.choice || has_promisor_remote())
aa57b871 1650 fetch_one_setup_partial(remote);
c1a7902f 1651 result = fetch_one(remote, argc, argv, prune_tags_ok);
acb0c572
JH
1652 } else {
1653 if (filter_options.choice)
e0137875
CC
1654 die(_("--filter can only be used with the remote "
1655 "configured in extensions.partialclone"));
aa57b871 1656 /* TODO should this also die if we have a previous partial-clone? */
a1743343 1657 result = fetch_multiple(&list);
acb0c572 1658 }
a1743343 1659
be254a0e 1660 if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
85556d4e
JK
1661 struct argv_array options = ARGV_ARRAY_INIT;
1662
1663 add_options_to_argv(&options);
e724197f
BW
1664 result = fetch_populated_submodules(the_repository,
1665 &options,
7dce19d3 1666 submodule_prefix,
8f0700dd 1667 recurse_submodules,
8fa29159 1668 recurse_submodules_default,
62104ba1
SB
1669 verbosity < 0,
1670 max_children);
85556d4e 1671 argv_array_clear(&options);
7dce19d3
JL
1672 }
1673
9c4a036b
BG
1674 string_list_clear(&list, 0);
1675
d0b59866 1676 close_all_packs(the_repository->objects);
0898c962 1677
1991006c 1678 argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
6fceed3b
NTND
1679 if (verbosity < 0)
1680 argv_array_push(&argv_gc_auto, "--quiet");
1991006c
NTND
1681 run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
1682 argv_array_clear(&argv_gc_auto);
131b8fcb 1683
9c4a036b
BG
1684 return result;
1685}