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chromium / external / github.com / git / git / refs/tags/v2.7.3 / . / remote.c
blob: 6e5c1a876f5044ffdea71531695ce04305b072f1 [file] [log] [blame]
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]1#include "cache.h"
2#include "remote.h"
3#include "refs.h"
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]4#include "commit.h"
5#include "diff.h"
6#include "revision.h"
Alexander Potashev8ca12c02009-01-10 12:07:50[diff] [blame]7#include "dir.h"
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]8#include "tag.h"
Julian Phillips73cf0822009-10-25 21:28:11[diff] [blame]9#include "string-list.h"
Jeff Kinged81c762012-05-21 22:19:28[diff] [blame]10#include "mergesort.h"
Jeff King0b282cc2015-09-24 21:07:58[diff] [blame]11#include "argv-array.h"
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]12
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]13enum map_direction { FROM_SRC, FROM_DST };
14
Daniel Barkalowe0aaa292008-04-17 23:32:35[diff] [blame]15static struct refspec s_tag_refspec = {
16 0,
17 1,
Junio C Hamanob84c3432008-05-25 20:38:44[diff] [blame]18 0,
Junio C Hamano6e7b66e2013-01-29 22:02:15[diff] [blame]19 0,
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]20 "refs/tags/*",
21 "refs/tags/*"
Daniel Barkalowe0aaa292008-04-17 23:32:35[diff] [blame]22};
23
24const struct refspec *tag_refspec = &s_tag_refspec;
25
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]26struct counted_string {
27 size_t len;
28 const char *s;
29};
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]30struct rewrite {
31 const char *base;
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]32 size_t baselen;
33 struct counted_string *instead_of;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]34 int instead_of_nr;
35 int instead_of_alloc;
36};
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]37struct rewrites {
38 struct rewrite **rewrite;
39 int rewrite_alloc;
40 int rewrite_nr;
41};
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]42
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]43static struct remote **remotes;
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]44static int remotes_alloc;
45static int remotes_nr;
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]46static struct hashmap remotes_hash;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]47
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]48static struct branch **branches;
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]49static int branches_alloc;
50static int branches_nr;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]51
52static struct branch *current_branch;
Ramkumar Ramachandraf24f7152013-04-02 07:40:32[diff] [blame]53static const char *pushremote_name;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]54
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]55static struct rewrites rewrites;
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]56static struct rewrites rewrites_push;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]57
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]58static int valid_remote(const struct remote *remote)
59{
Daniel Barkalowc578f512009-11-18 01:42:25[diff] [blame]60 return (!!remote->url) || (!!remote->foreign_vcs);
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]61}
62
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]63static const char *alias_url(const char *url, struct rewrites *r)
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]64{
65 int i, j;
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]66 struct counted_string *longest;
67 int longest_i;
68
69 longest = NULL;
70 longest_i = -1;
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]71 for (i = 0; i < r->rewrite_nr; i++) {
72 if (!r->rewrite[i])
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]73 continue;
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]74 for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) {
Christian Couder59556542013-11-30 20:55:40[diff] [blame]75 if (starts_with(url, r->rewrite[i]->instead_of[j].s) &&
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]76 (!longest ||
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]77 longest->len < r->rewrite[i]->instead_of[j].len)) {
78 longest = &(r->rewrite[i]->instead_of[j]);
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]79 longest_i = i;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]80 }
81 }
82 }
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]83 if (!longest)
84 return url;
85
Jeff King75faa452015-09-24 21:07:03[diff] [blame]86 return xstrfmt("%s%s", r->rewrite[longest_i]->base, url + longest->len);
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]87}
88
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]89static void add_push_refspec(struct remote *remote, const char *ref)
90{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]91 ALLOC_GROW(remote->push_refspec,
92 remote->push_refspec_nr + 1,
93 remote->push_refspec_alloc);
94 remote->push_refspec[remote->push_refspec_nr++] = ref;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]95}
96
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]97static void add_fetch_refspec(struct remote *remote, const char *ref)
98{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]99 ALLOC_GROW(remote->fetch_refspec,
100 remote->fetch_refspec_nr + 1,
101 remote->fetch_refspec_alloc);
102 remote->fetch_refspec[remote->fetch_refspec_nr++] = ref;
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]103}
104
Shawn O. Pearce28b91f82007-09-19 04:49:27[diff] [blame]105static void add_url(struct remote *remote, const char *url)
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]106{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]107 ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
108 remote->url[remote->url_nr++] = url;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]109}
110
Michael J Gruber20346232009-06-09 16:01:34[diff] [blame]111static void add_pushurl(struct remote *remote, const char *pushurl)
112{
113 ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc);
114 remote->pushurl[remote->pushurl_nr++] = pushurl;
115}
116
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]117static void add_pushurl_alias(struct remote *remote, const char *url)
118{
119 const char *pushurl = alias_url(url, &rewrites_push);
120 if (pushurl != url)
121 add_pushurl(remote, pushurl);
122}
123
124static void add_url_alias(struct remote *remote, const char *url)
125{
126 add_url(remote, alias_url(url, &rewrites));
127 add_pushurl_alias(remote, url);
128}
129
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]130struct remotes_hash_key {
131 const char *str;
132 int len;
133};
134
135static int remotes_hash_cmp(const struct remote *a, const struct remote *b, const struct remotes_hash_key *key)
136{
137 if (key)
138 return strncmp(a->name, key->str, key->len) || a->name[key->len];
139 else
140 return strcmp(a->name, b->name);
141}
142
143static inline void init_remotes_hash(void)
144{
145 if (!remotes_hash.cmpfn)
146 hashmap_init(&remotes_hash, (hashmap_cmp_fn)remotes_hash_cmp, 0);
147}
148
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]149static struct remote *make_remote(const char *name, int len)
150{
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]151 struct remote *ret, *replaced;
152 struct remotes_hash_key lookup;
153 struct hashmap_entry lookup_entry;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]154
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]155 if (!len)
156 len = strlen(name);
157
158 init_remotes_hash();
159 lookup.str = name;
160 lookup.len = len;
161 hashmap_entry_init(&lookup_entry, memhash(name, len));
162
163 if ((ret = hashmap_get(&remotes_hash, &lookup_entry, &lookup)) != NULL)
164 return ret;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]165
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]166 ret = xcalloc(1, sizeof(struct remote));
Michael Schubert737c5a92013-07-13 09:36:24[diff] [blame]167 ret->prune = -1; /* unspecified */
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]168 ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc);
169 remotes[remotes_nr++] = ret;
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]170 ret->name = xstrndup(name, len);
171
172 hashmap_entry_init(ret, lookup_entry.hash);
173 replaced = hashmap_put(&remotes_hash, ret);
174 assert(replaced == NULL); /* no previous entry overwritten */
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]175 return ret;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]176}
177
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]178static void add_merge(struct branch *branch, const char *name)
179{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]180 ALLOC_GROW(branch->merge_name, branch->merge_nr + 1,
181 branch->merge_alloc);
182 branch->merge_name[branch->merge_nr++] = name;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]183}
184
185static struct branch *make_branch(const char *name, int len)
186{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]187 struct branch *ret;
188 int i;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]189
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]190 for (i = 0; i < branches_nr; i++) {
191 if (len ? (!strncmp(name, branches[i]->name, len) &&
192 !branches[i]->name[len]) :
193 !strcmp(name, branches[i]->name))
194 return branches[i];
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]195 }
196
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]197 ALLOC_GROW(branches, branches_nr + 1, branches_alloc);
198 ret = xcalloc(1, sizeof(struct branch));
199 branches[branches_nr++] = ret;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]200 if (len)
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]201 ret->name = xstrndup(name, len);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]202 else
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]203 ret->name = xstrdup(name);
Jeff Kingfa3f60b2014-06-18 20:02:13[diff] [blame]204 ret->refname = xstrfmt("refs/heads/%s", ret->name);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]205
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]206 return ret;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]207}
208
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]209static struct rewrite *make_rewrite(struct rewrites *r, const char *base, int len)
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]210{
211 struct rewrite *ret;
212 int i;
213
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]214 for (i = 0; i < r->rewrite_nr; i++) {
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]215 if (len
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]216 ? (len == r->rewrite[i]->baselen &&
217 !strncmp(base, r->rewrite[i]->base, len))
218 : !strcmp(base, r->rewrite[i]->base))
219 return r->rewrite[i];
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]220 }
221
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]222 ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc);
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]223 ret = xcalloc(1, sizeof(struct rewrite));
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]224 r->rewrite[r->rewrite_nr++] = ret;
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]225 if (len) {
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]226 ret->base = xstrndup(base, len);
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]227 ret->baselen = len;
228 }
229 else {
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]230 ret->base = xstrdup(base);
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]231 ret->baselen = strlen(base);
232 }
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]233 return ret;
234}
235
236static void add_instead_of(struct rewrite *rewrite, const char *instead_of)
237{
238 ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc);
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]239 rewrite->instead_of[rewrite->instead_of_nr].s = instead_of;
240 rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of);
241 rewrite->instead_of_nr++;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]242}
243
Jeff King0e265a92015-09-24 21:07:20[diff] [blame]244static const char *skip_spaces(const char *s)
245{
246 while (isspace(*s))
247 s++;
248 return s;
249}
250
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]251static void read_remotes_file(struct remote *remote)
252{
Jeff King0e265a92015-09-24 21:07:20[diff] [blame]253 struct strbuf buf = STRBUF_INIT;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]254 FILE *f = fopen(git_path("remotes/%s", remote->name), "r");
255
256 if (!f)
257 return;
Miklos Vajna89cf4c72008-11-10 20:43:00[diff] [blame]258 remote->origin = REMOTE_REMOTES;
Jeff King0e265a92015-09-24 21:07:20[diff] [blame]259 while (strbuf_getline(&buf, f, '\n') != EOF) {
260 const char *v;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]261
Jeff King0e265a92015-09-24 21:07:20[diff] [blame]262 strbuf_rtrim(&buf);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]263
Jeff King0e265a92015-09-24 21:07:20[diff] [blame]264 if (skip_prefix(buf.buf, "URL:", &v))
265 add_url_alias(remote, xstrdup(skip_spaces(v)));
266 else if (skip_prefix(buf.buf, "Push:", &v))
267 add_push_refspec(remote, xstrdup(skip_spaces(v)));
268 else if (skip_prefix(buf.buf, "Pull:", &v))
269 add_fetch_refspec(remote, xstrdup(skip_spaces(v)));
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]270 }
Jeff King0e265a92015-09-24 21:07:20[diff] [blame]271 strbuf_release(&buf);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]272 fclose(f);
273}
274
275static void read_branches_file(struct remote *remote)
276{
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]277 char *frag;
Jeff Kingf28e3ab2015-09-24 21:07:18[diff] [blame]278 struct strbuf buf = STRBUF_INIT;
279 FILE *f = fopen(git_path("branches/%s", remote->name), "r");
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]280
281 if (!f)
282 return;
Jeff Kingf28e3ab2015-09-24 21:07:18[diff] [blame]283
284 strbuf_getline(&buf, f, '\n');
Johannes Sixt0fb19902015-10-23 06:02:51[diff] [blame]285 fclose(f);
Jeff Kingf28e3ab2015-09-24 21:07:18[diff] [blame]286 strbuf_trim(&buf);
287 if (!buf.len) {
288 strbuf_release(&buf);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]289 return;
Jeff Kingf28e3ab2015-09-24 21:07:18[diff] [blame]290 }
291
Miklos Vajna89cf4c72008-11-10 20:43:00[diff] [blame]292 remote->origin = REMOTE_BRANCHES;
Daniel Barkalow472fa4c2008-03-25 23:35:28[diff] [blame]293
294 /*
Ramkumar Ramachandra55cfde22013-06-22 07:58:12[diff] [blame]295 * The branches file would have URL and optionally
Daniel Barkalow472fa4c2008-03-25 23:35:28[diff] [blame]296 * #branch specified. The "master" (or specified) branch is
Jeff Kingf28e3ab2015-09-24 21:07:18[diff] [blame]297 * fetched and stored in the local branch matching the
298 * remote name.
Daniel Barkalow472fa4c2008-03-25 23:35:28[diff] [blame]299 */
Jeff Kingf28e3ab2015-09-24 21:07:18[diff] [blame]300 frag = strchr(buf.buf, '#');
301 if (frag)
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]302 *(frag++) = '\0';
Jeff Kingf28e3ab2015-09-24 21:07:18[diff] [blame]303 else
304 frag = "master";
Ramkumar Ramachandra55cfde22013-06-22 07:58:12[diff] [blame]305
Jeff Kingf28e3ab2015-09-24 21:07:18[diff] [blame]306 add_url_alias(remote, strbuf_detach(&buf, NULL));
307 add_fetch_refspec(remote, xstrfmt("refs/heads/%s:refs/heads/%s",
308 frag, remote->name));
309
Martin Koegler18afe102008-11-10 21:47:11[diff] [blame]310 /*
311 * Cogito compatible push: push current HEAD to remote #branch
312 * (master if missing)
313 */
Jeff Kingf28e3ab2015-09-24 21:07:18[diff] [blame]314 add_push_refspec(remote, xstrfmt("HEAD:refs/heads/%s", frag));
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]315 remote->fetch_tags = 1; /* always auto-follow */
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]316}
317
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]318static int handle_config(const char *key, const char *value, void *cb)
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]319{
320 const char *name;
321 const char *subkey;
322 struct remote *remote;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]323 struct branch *branch;
Christian Couder59556542013-11-30 20:55:40[diff] [blame]324 if (starts_with(key, "branch.")) {
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]325 name = key + 7;
326 subkey = strrchr(name, '.');
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]327 if (!subkey)
328 return 0;
Junio C Hamano896c0532007-12-15 04:34:56[diff] [blame]329 branch = make_branch(name, subkey - name);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]330 if (!strcmp(subkey, ".remote")) {
Jeff Kinge41bf352015-05-01 22:44:41[diff] [blame]331 return git_config_string(&branch->remote_name, key, value);
Ramkumar Ramachandra9f765ce2013-04-02 07:40:34[diff] [blame]332 } else if (!strcmp(subkey, ".pushremote")) {
Jeff Kingda66b272015-05-21 04:45:20[diff] [blame]333 return git_config_string(&branch->pushremote_name, key, value);
Junio C Hamanod2370cc2008-02-11 19:00:10[diff] [blame]334 } else if (!strcmp(subkey, ".merge")) {
335 if (!value)
336 return config_error_nonbool(key);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]337 add_merge(branch, xstrdup(value));
Junio C Hamanod2370cc2008-02-11 19:00:10[diff] [blame]338 }
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]339 return 0;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]340 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]341 if (starts_with(key, "url.")) {
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]342 struct rewrite *rewrite;
Daniel Barkalow60e3aba2008-04-12 19:32:00[diff] [blame]343 name = key + 4;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]344 subkey = strrchr(name, '.');
345 if (!subkey)
346 return 0;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]347 if (!strcmp(subkey, ".insteadof")) {
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]348 rewrite = make_rewrite(&rewrites, name, subkey - name);
349 if (!value)
350 return config_error_nonbool(key);
351 add_instead_of(rewrite, xstrdup(value));
352 } else if (!strcmp(subkey, ".pushinsteadof")) {
353 rewrite = make_rewrite(&rewrites_push, name, subkey - name);
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]354 if (!value)
355 return config_error_nonbool(key);
356 add_instead_of(rewrite, xstrdup(value));
357 }
358 }
Ramkumar Ramachandra224c2172013-04-02 07:40:33[diff] [blame]359
Christian Couder59556542013-11-30 20:55:40[diff] [blame]360 if (!starts_with(key, "remote."))
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]361 return 0;
362 name = key + 7;
Ramkumar Ramachandra224c2172013-04-02 07:40:33[diff] [blame]363
364 /* Handle remote.* variables */
365 if (!strcmp(name, "pushdefault"))
366 return git_config_string(&pushremote_name, key, value);
367
368 /* Handle remote.<name>.* variables */
Brandon Caseyc82efaf2008-10-14 20:30:21[diff] [blame]369 if (*name == '/') {
370 warning("Config remote shorthand cannot begin with '/': %s",
371 name);
372 return 0;
373 }
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]374 subkey = strrchr(name, '.');
375 if (!subkey)
Johannes Sixtcd294bc2009-04-23 13:49:05[diff] [blame]376 return 0;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]377 remote = make_remote(name, subkey - name);
Miklos Vajna89cf4c72008-11-10 20:43:00[diff] [blame]378 remote->origin = REMOTE_CONFIG;
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]379 if (!strcmp(subkey, ".mirror"))
380 remote->mirror = git_config_bool(key, value);
381 else if (!strcmp(subkey, ".skipdefaultupdate"))
382 remote->skip_default_update = git_config_bool(key, value);
Björn Gustavsson7cc91a22009-11-09 20:11:06[diff] [blame]383 else if (!strcmp(subkey, ".skipfetchall"))
384 remote->skip_default_update = git_config_bool(key, value);
Michael Schubert737c5a92013-07-13 09:36:24[diff] [blame]385 else if (!strcmp(subkey, ".prune"))
386 remote->prune = git_config_bool(key, value);
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]387 else if (!strcmp(subkey, ".url")) {
388 const char *v;
389 if (git_config_string(&v, key, value))
390 return -1;
391 add_url(remote, v);
Michael J Gruber20346232009-06-09 16:01:34[diff] [blame]392 } else if (!strcmp(subkey, ".pushurl")) {
393 const char *v;
394 if (git_config_string(&v, key, value))
395 return -1;
396 add_pushurl(remote, v);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]397 } else if (!strcmp(subkey, ".push")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]398 const char *v;
399 if (git_config_string(&v, key, value))
400 return -1;
401 add_push_refspec(remote, v);
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]402 } else if (!strcmp(subkey, ".fetch")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]403 const char *v;
404 if (git_config_string(&v, key, value))
405 return -1;
406 add_fetch_refspec(remote, v);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]407 } else if (!strcmp(subkey, ".receivepack")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]408 const char *v;
409 if (git_config_string(&v, key, value))
410 return -1;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]411 if (!remote->receivepack)
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]412 remote->receivepack = v;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]413 else
414 error("more than one receivepack given, using the first");
Daniel Barkalow0012ba22007-09-11 03:02:51[diff] [blame]415 } else if (!strcmp(subkey, ".uploadpack")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]416 const char *v;
417 if (git_config_string(&v, key, value))
418 return -1;
Daniel Barkalow0012ba22007-09-11 03:02:51[diff] [blame]419 if (!remote->uploadpack)
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]420 remote->uploadpack = v;
Daniel Barkalow0012ba22007-09-11 03:02:51[diff] [blame]421 else
422 error("more than one uploadpack given, using the first");
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]423 } else if (!strcmp(subkey, ".tagopt")) {
424 if (!strcmp(value, "--no-tags"))
425 remote->fetch_tags = -1;
Samuel Tardieu944163a2010-04-19 23:31:25[diff] [blame]426 else if (!strcmp(value, "--tags"))
427 remote->fetch_tags = 2;
Sam Vilain14c98212007-12-03 21:48:54[diff] [blame]428 } else if (!strcmp(subkey, ".proxy")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]429 return git_config_string((const char **)&remote->http_proxy,
430 key, value);
Daniel Barkalowc578f512009-11-18 01:42:25[diff] [blame]431 } else if (!strcmp(subkey, ".vcs")) {
432 return git_config_string(&remote->foreign_vcs, key, value);
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]433 }
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]434 return 0;
435}
436
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]437static void alias_all_urls(void)
438{
439 int i, j;
440 for (i = 0; i < remotes_nr; i++) {
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]441 int add_pushurl_aliases;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]442 if (!remotes[i])
443 continue;
Michael J Gruber20346232009-06-09 16:01:34[diff] [blame]444 for (j = 0; j < remotes[i]->pushurl_nr; j++) {
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]445 remotes[i]->pushurl[j] = alias_url(remotes[i]->pushurl[j], &rewrites);
Michael J Gruber20346232009-06-09 16:01:34[diff] [blame]446 }
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]447 add_pushurl_aliases = remotes[i]->pushurl_nr == 0;
448 for (j = 0; j < remotes[i]->url_nr; j++) {
449 if (add_pushurl_aliases)
450 add_pushurl_alias(remotes[i], remotes[i]->url[j]);
451 remotes[i]->url[j] = alias_url(remotes[i]->url[j], &rewrites);
452 }
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]453 }
454}
455
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]456static void read_config(void)
457{
Jeff Kinge41bf352015-05-01 22:44:41[diff] [blame]458 static int loaded;
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]459 struct object_id oid;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]460 const char *head_ref;
461 int flag;
Jeff Kinge41bf352015-05-01 22:44:41[diff] [blame]462
463 if (loaded)
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]464 return;
Jeff Kinge41bf352015-05-01 22:44:41[diff] [blame]465 loaded = 1;
466
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]467 current_branch = NULL;
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]468 head_ref = resolve_ref_unsafe("HEAD", 0, oid.hash, &flag);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]469 if (head_ref && (flag & REF_ISSYMREF) &&
Jeff King95b567c2014-06-18 19:48:29[diff] [blame]470 skip_prefix(head_ref, "refs/heads/", &head_ref)) {
471 current_branch = make_branch(head_ref, 0);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]472 }
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]473 git_config(handle_config, NULL);
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]474 alias_all_urls();
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]475}
476
Junio C Hamano47c6ef12008-07-27 06:15:51[diff] [blame]477/*
Brandon Casey2cb1f362008-08-22 00:16:30[diff] [blame]478 * This function frees a refspec array.
479 * Warning: code paths should be checked to ensure that the src
480 * and dst pointers are always freeable pointers as well
481 * as the refspec pointer itself.
482 */
Nanako Shiraishi697d7f52008-09-25 09:41:00[diff] [blame]483static void free_refspecs(struct refspec *refspec, int nr_refspec)
Brandon Casey2cb1f362008-08-22 00:16:30[diff] [blame]484{
485 int i;
486
487 if (!refspec)
488 return;
489
490 for (i = 0; i < nr_refspec; i++) {
491 free(refspec[i].src);
492 free(refspec[i].dst);
493 }
494 free(refspec);
495}
496
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]497static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]498{
499 int i;
Brian Gesiakda7a4782014-05-26 15:33:55[diff] [blame]500 struct refspec *rs = xcalloc(nr_refspec, sizeof(*rs));
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]501
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]502 for (i = 0; i < nr_refspec; i++) {
Junio C Hamano47c6ef12008-07-27 06:15:51[diff] [blame]503 size_t llen;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]504 int is_glob;
505 const char *lhs, *rhs;
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]506 int flags;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]507
Benjamin Kramer8e76bf32009-03-13 12:51:33[diff] [blame]508 is_glob = 0;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]509
510 lhs = refspec[i];
511 if (*lhs == '+') {
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]512 rs[i].force = 1;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]513 lhs++;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]514 }
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]515
516 rhs = strrchr(lhs, ':');
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]517
518 /*
519 * Before going on, special case ":" (or "+:") as a refspec
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]520 * for pushing matching refs.
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]521 */
522 if (!fetch && rhs == lhs && rhs[1] == '\0') {
523 rs[i].matching = 1;
524 continue;
525 }
526
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]527 if (rhs) {
Junio C Hamano47c6ef12008-07-27 06:15:51[diff] [blame]528 size_t rlen = strlen(++rhs);
Daniel Barkalowabd2bde2009-03-07 06:11:39[diff] [blame]529 is_glob = (1 <= rlen && strchr(rhs, '*'));
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]530 rs[i].dst = xstrndup(rhs, rlen);
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]531 }
532
533 llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
Daniel Barkalowabd2bde2009-03-07 06:11:39[diff] [blame]534 if (1 <= llen && memchr(lhs, '*', llen)) {
Junio C Hamano7d19da42008-03-26 04:15:52[diff] [blame]535 if ((rhs && !is_glob) || (!rhs && fetch))
536 goto invalid;
537 is_glob = 1;
Junio C Hamano7d19da42008-03-26 04:15:52[diff] [blame]538 } else if (rhs && is_glob) {
539 goto invalid;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]540 }
Junio C Hamano7d19da42008-03-26 04:15:52[diff] [blame]541
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]542 rs[i].pattern = is_glob;
543 rs[i].src = xstrndup(lhs, llen);
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]544 flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0);
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]545
546 if (fetch) {
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]547 struct object_id unused;
Junio C Hamano6e7b66e2013-01-29 22:02:15[diff] [blame]548
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]549 /* LHS */
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]550 if (!*rs[i].src)
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]551 ; /* empty is ok; it means "HEAD" */
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]552 else if (llen == GIT_SHA1_HEXSZ && !get_oid_hex(rs[i].src, &unused))
Junio C Hamano6e7b66e2013-01-29 22:02:15[diff] [blame]553 rs[i].exact_sha1 = 1; /* ok */
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]554 else if (!check_refname_format(rs[i].src, flags))
555 ; /* valid looking ref is ok */
556 else
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]557 goto invalid;
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]558 /* RHS */
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]559 if (!rs[i].dst)
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]560 ; /* missing is ok; it is the same as empty */
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]561 else if (!*rs[i].dst)
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]562 ; /* empty is ok; it means "do not store" */
563 else if (!check_refname_format(rs[i].dst, flags))
564 ; /* valid looking ref is ok */
565 else
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]566 goto invalid;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]567 } else {
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]568 /*
569 * LHS
570 * - empty is allowed; it means delete.
571 * - when wildcarded, it must be a valid looking ref.
572 * - otherwise, it must be an extended SHA-1, but
573 * there is no existing way to validate this.
574 */
575 if (!*rs[i].src)
576 ; /* empty is ok */
577 else if (is_glob) {
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]578 if (check_refname_format(rs[i].src, flags))
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]579 goto invalid;
580 }
581 else
582 ; /* anything goes, for now */
583 /*
584 * RHS
585 * - missing is allowed, but LHS then must be a
586 * valid looking ref.
587 * - empty is not allowed.
588 * - otherwise it must be a valid looking ref.
589 */
590 if (!rs[i].dst) {
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]591 if (check_refname_format(rs[i].src, flags))
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]592 goto invalid;
593 } else if (!*rs[i].dst) {
594 goto invalid;
595 } else {
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]596 if (check_refname_format(rs[i].dst, flags))
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]597 goto invalid;
598 }
Daniel Barkalowef00d152008-03-18 02:05:23[diff] [blame]599 }
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]600 }
601 return rs;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]602
603 invalid:
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]604 if (verify) {
Brandon Casey2cb1f362008-08-22 00:16:30[diff] [blame]605 /*
606 * nr_refspec must be greater than zero and i must be valid
607 * since it is only possible to reach this point from within
608 * the for loop above.
609 */
610 free_refspecs(rs, i+1);
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]611 return NULL;
612 }
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]613 die("Invalid refspec '%s'", refspec[i]);
614}
615
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]616int valid_fetch_refspec(const char *fetch_refspec_str)
617{
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]618 struct refspec *refspec;
619
Gary V. Vaughan66dbfd52010-05-14 09:31:33[diff] [blame]620 refspec = parse_refspec_internal(1, &fetch_refspec_str, 1, 1);
Brandon Casey2cb1f362008-08-22 00:16:30[diff] [blame]621 free_refspecs(refspec, 1);
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]622 return !!refspec;
623}
624
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]625struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec)
626{
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]627 return parse_refspec_internal(nr_refspec, refspec, 1, 0);
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]628}
629
Nanako Shiraishi697d7f52008-09-25 09:41:00[diff] [blame]630static struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]631{
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]632 return parse_refspec_internal(nr_refspec, refspec, 0, 0);
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]633}
634
Daniel Barkalow72ff8942009-11-18 01:42:28[diff] [blame]635void free_refspec(int nr_refspec, struct refspec *refspec)
636{
637 int i;
638 for (i = 0; i < nr_refspec; i++) {
639 free(refspec[i].src);
640 free(refspec[i].dst);
641 }
642 free(refspec);
643}
644
Daniel Barkalowdf93e332008-02-15 19:14:18[diff] [blame]645static int valid_remote_nick(const char *name)
646{
Alexander Potashev8ca12c02009-01-10 12:07:50[diff] [blame]647 if (!name[0] || is_dot_or_dotdot(name))
Daniel Barkalowdf93e332008-02-15 19:14:18[diff] [blame]648 return 0;
649 return !strchr(name, '/'); /* no slash */
650}
651
Jeff Kingf0521542015-05-21 04:45:16[diff] [blame]652const char *remote_for_branch(struct branch *branch, int *explicit)
653{
654 if (branch && branch->remote_name) {
655 if (explicit)
656 *explicit = 1;
657 return branch->remote_name;
658 }
659 if (explicit)
660 *explicit = 0;
661 return "origin";
662}
663
Jeff Kingda66b272015-05-21 04:45:20[diff] [blame]664const char *pushremote_for_branch(struct branch *branch, int *explicit)
665{
666 if (branch && branch->pushremote_name) {
667 if (explicit)
668 *explicit = 1;
669 return branch->pushremote_name;
670 }
671 if (pushremote_name) {
672 if (explicit)
673 *explicit = 1;
674 return pushremote_name;
675 }
676 return remote_for_branch(branch, explicit);
677}
678
679static struct remote *remote_get_1(const char *name,
680 const char *(*get_default)(struct branch *, int *))
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]681{
682 struct remote *ret;
Daniel Barkalowfa685bd2009-03-11 05:47:20[diff] [blame]683 int name_given = 0;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]684
Jeff King8770e6f2015-05-21 04:45:23[diff] [blame]685 read_config();
686
Daniel Barkalowfa685bd2009-03-11 05:47:20[diff] [blame]687 if (name)
688 name_given = 1;
Jeff Kingda66b272015-05-21 04:45:20[diff] [blame]689 else
690 name = get_default(current_branch, &name_given);
Junio C Hamano9326d492009-03-16 07:35:09[diff] [blame]691
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]692 ret = make_remote(name, 0);
Daniel Barkalowdf93e332008-02-15 19:14:18[diff] [blame]693 if (valid_remote_nick(name)) {
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]694 if (!valid_remote(ret))
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]695 read_remotes_file(ret);
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]696 if (!valid_remote(ret))
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]697 read_branches_file(ret);
698 }
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]699 if (name_given && !valid_remote(ret))
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]700 add_url_alias(ret, name);
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]701 if (!valid_remote(ret))
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]702 return NULL;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]703 ret->fetch = parse_fetch_refspec(ret->fetch_refspec_nr, ret->fetch_refspec);
704 ret->push = parse_push_refspec(ret->push_refspec_nr, ret->push_refspec);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]705 return ret;
706}
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]707
Ramkumar Ramachandraf24f7152013-04-02 07:40:32[diff] [blame]708struct remote *remote_get(const char *name)
709{
Jeff Kingda66b272015-05-21 04:45:20[diff] [blame]710 return remote_get_1(name, remote_for_branch);
Ramkumar Ramachandraf24f7152013-04-02 07:40:32[diff] [blame]711}
712
713struct remote *pushremote_get(const char *name)
714{
Jeff Kingda66b272015-05-21 04:45:20[diff] [blame]715 return remote_get_1(name, pushremote_for_branch);
Ramkumar Ramachandraf24f7152013-04-02 07:40:32[diff] [blame]716}
717
Finn Arne Gangstad9a23ba32009-04-06 13:41:01[diff] [blame]718int remote_is_configured(const char *name)
719{
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]720 struct remotes_hash_key lookup;
721 struct hashmap_entry lookup_entry;
Finn Arne Gangstad9a23ba32009-04-06 13:41:01[diff] [blame]722 read_config();
723
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]724 init_remotes_hash();
725 lookup.str = name;
726 lookup.len = strlen(name);
727 hashmap_entry_init(&lookup_entry, memhash(name, lookup.len));
728
729 return hashmap_get(&remotes_hash, &lookup_entry, &lookup) != NULL;
Finn Arne Gangstad9a23ba32009-04-06 13:41:01[diff] [blame]730}
731
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]732int for_each_remote(each_remote_fn fn, void *priv)
733{
734 int i, result = 0;
735 read_config();
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]736 for (i = 0; i < remotes_nr && !result; i++) {
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]737 struct remote *r = remotes[i];
738 if (!r)
739 continue;
740 if (!r->fetch)
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]741 r->fetch = parse_fetch_refspec(r->fetch_refspec_nr,
742 r->fetch_refspec);
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]743 if (!r->push)
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]744 r->push = parse_push_refspec(r->push_refspec_nr,
745 r->push_refspec);
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]746 result = fn(r, priv);
747 }
748 return result;
749}
750
Michael Haggertydf02ebd2013-10-30 05:33:10[diff] [blame]751static void handle_duplicate(struct ref *ref1, struct ref *ref2)
752{
Michael Haggertyf096e6e2013-10-30 05:33:12[diff] [blame]753 if (strcmp(ref1->name, ref2->name)) {
754 if (ref1->fetch_head_status != FETCH_HEAD_IGNORE &&
755 ref2->fetch_head_status != FETCH_HEAD_IGNORE) {
756 die(_("Cannot fetch both %s and %s to %s"),
757 ref1->name, ref2->name, ref2->peer_ref->name);
758 } else if (ref1->fetch_head_status != FETCH_HEAD_IGNORE &&
759 ref2->fetch_head_status == FETCH_HEAD_IGNORE) {
760 warning(_("%s usually tracks %s, not %s"),
761 ref2->peer_ref->name, ref2->name, ref1->name);
762 } else if (ref1->fetch_head_status == FETCH_HEAD_IGNORE &&
763 ref2->fetch_head_status == FETCH_HEAD_IGNORE) {
764 die(_("%s tracks both %s and %s"),
765 ref2->peer_ref->name, ref1->name, ref2->name);
766 } else {
767 /*
768 * This last possibility doesn't occur because
769 * FETCH_HEAD_IGNORE entries always appear at
770 * the end of the list.
771 */
772 die(_("Internal error"));
773 }
774 }
Michael Haggertydf02ebd2013-10-30 05:33:10[diff] [blame]775 free(ref2->peer_ref);
776 free(ref2);
777}
778
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]779struct ref *ref_remove_duplicates(struct ref *ref_map)
Daniel Barkalow2467a4f2007-10-08 04:25:07[diff] [blame]780{
Thiago Farina183113a2010-07-04 19:46:19[diff] [blame]781 struct string_list refs = STRING_LIST_INIT_NODUP;
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]782 struct ref *retval = NULL;
783 struct ref **p = &retval;
Julian Phillips73cf0822009-10-25 21:28:11[diff] [blame]784
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]785 while (ref_map) {
786 struct ref *ref = ref_map;
Julian Phillips73cf0822009-10-25 21:28:11[diff] [blame]787
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]788 ref_map = ref_map->next;
789 ref->next = NULL;
790
791 if (!ref->peer_ref) {
792 *p = ref;
793 p = &ref->next;
Michael Haggerty09ea1f82013-10-30 05:33:07[diff] [blame]794 } else {
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]795 struct string_list_item *item =
796 string_list_insert(&refs, ref->peer_ref->name);
797
798 if (item->util) {
799 /* Entry already existed */
Michael Haggertydf02ebd2013-10-30 05:33:10[diff] [blame]800 handle_duplicate((struct ref *)item->util, ref);
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]801 } else {
802 *p = ref;
803 p = &ref->next;
804 item->util = ref;
805 }
Daniel Barkalow2467a4f2007-10-08 04:25:07[diff] [blame]806 }
Daniel Barkalow2467a4f2007-10-08 04:25:07[diff] [blame]807 }
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]808
Julian Phillips73cf0822009-10-25 21:28:11[diff] [blame]809 string_list_clear(&refs, 0);
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]810 return retval;
Daniel Barkalow2467a4f2007-10-08 04:25:07[diff] [blame]811}
812
Shawn O. Pearce28b91f82007-09-19 04:49:27[diff] [blame]813int remote_has_url(struct remote *remote, const char *url)
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]814{
815 int i;
Shawn O. Pearce28b91f82007-09-19 04:49:27[diff] [blame]816 for (i = 0; i < remote->url_nr; i++) {
817 if (!strcmp(remote->url[i], url))
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]818 return 1;
819 }
820 return 0;
821}
822
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]823static int match_name_with_pattern(const char *key, const char *name,
824 const char *value, char **result)
Daniel Barkalowa3c84232009-03-07 06:11:29[diff] [blame]825{
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]826 const char *kstar = strchr(key, '*');
827 size_t klen;
Daniel Barkalowabd2bde2009-03-07 06:11:39[diff] [blame]828 size_t ksuffixlen;
829 size_t namelen;
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]830 int ret;
831 if (!kstar)
832 die("Key '%s' of pattern had no '*'", key);
833 klen = kstar - key;
Daniel Barkalowabd2bde2009-03-07 06:11:39[diff] [blame]834 ksuffixlen = strlen(kstar + 1);
835 namelen = strlen(name);
836 ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen &&
837 !memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen);
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]838 if (ret && value) {
René Scharfe07bfa572014-09-21 08:23:37[diff] [blame]839 struct strbuf sb = STRBUF_INIT;
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]840 const char *vstar = strchr(value, '*');
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]841 if (!vstar)
842 die("Value '%s' of pattern has no '*'", value);
René Scharfe07bfa572014-09-21 08:23:37[diff] [blame]843 strbuf_add(&sb, value, vstar - value);
844 strbuf_add(&sb, name + klen, namelen - klen - ksuffixlen);
845 strbuf_addstr(&sb, vstar + 1);
846 *result = strbuf_detach(&sb, NULL);
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]847 }
Daniel Barkalowa3c84232009-03-07 06:11:29[diff] [blame]848 return ret;
849}
850
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]851static void query_refspecs_multiple(struct refspec *refs, int ref_count, struct refspec *query, struct string_list *results)
852{
853 int i;
854 int find_src = !query->src;
855
856 if (find_src && !query->dst)
857 error("query_refspecs_multiple: need either src or dst");
858
859 for (i = 0; i < ref_count; i++) {
860 struct refspec *refspec = &refs[i];
861 const char *key = find_src ? refspec->dst : refspec->src;
862 const char *value = find_src ? refspec->src : refspec->dst;
863 const char *needle = find_src ? query->dst : query->src;
864 char **result = find_src ? &query->src : &query->dst;
865
866 if (!refspec->dst)
867 continue;
868 if (refspec->pattern) {
869 if (match_name_with_pattern(key, needle, value, result))
870 string_list_append_nodup(results, *result);
871 } else if (!strcmp(needle, key)) {
872 string_list_append(results, value);
873 }
874 }
875}
876
Junio C Hamanoca024652013-12-03 23:41:15[diff] [blame]877int query_refspecs(struct refspec *refs, int ref_count, struct refspec *query)
Daniel Barkalow72ff8942009-11-18 01:42:28[diff] [blame]878{
879 int i;
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]880 int find_src = !query->src;
Michael Haggerty049bff82013-10-30 05:33:01[diff] [blame]881 const char *needle = find_src ? query->dst : query->src;
882 char **result = find_src ? &query->src : &query->dst;
Daniel Barkalow72ff8942009-11-18 01:42:28[diff] [blame]883
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]884 if (find_src && !query->dst)
885 return error("query_refspecs: need either src or dst");
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]886
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]887 for (i = 0; i < ref_count; i++) {
888 struct refspec *refspec = &refs[i];
889 const char *key = find_src ? refspec->dst : refspec->src;
890 const char *value = find_src ? refspec->src : refspec->dst;
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]891
Shawn O. Pearce009c5bc2007-09-25 04:13:14[diff] [blame]892 if (!refspec->dst)
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]893 continue;
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]894 if (refspec->pattern) {
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]895 if (match_name_with_pattern(key, needle, value, result)) {
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]896 query->force = refspec->force;
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]897 return 0;
898 }
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]899 } else if (!strcmp(needle, key)) {
900 *result = xstrdup(value);
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]901 query->force = refspec->force;
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]902 return 0;
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]903 }
904 }
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]905 return -1;
906}
907
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]908char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
909 const char *name)
910{
911 struct refspec query;
912
913 memset(&query, 0, sizeof(struct refspec));
914 query.src = (char *)name;
915
916 if (query_refspecs(refspecs, nr_refspec, &query))
917 return NULL;
918
919 return query.dst;
920}
921
922int remote_find_tracking(struct remote *remote, struct refspec *refspec)
923{
924 return query_refspecs(remote->fetch, remote->fetch_refspec_nr, refspec);
925}
926
René Scharfe80097682008-10-18 08:37:40[diff] [blame]927static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen,
928 const char *name)
929{
930 size_t len = strlen(name);
Jeff King50a6c8e2016-02-22 22:44:35[diff] [blame]931 struct ref *ref = xcalloc(1, st_add4(sizeof(*ref), prefixlen, len, 1));
René Scharfe80097682008-10-18 08:37:40[diff] [blame]932 memcpy(ref->name, prefix, prefixlen);
933 memcpy(ref->name + prefixlen, name, len);
934 return ref;
935}
936
René Scharfe59c69c02008-10-18 08:44:18[diff] [blame]937struct ref *alloc_ref(const char *name)
Daniel Barkalowdfd255d2007-07-10 04:47:23[diff] [blame]938{
René Scharfe59c69c02008-10-18 08:44:18[diff] [blame]939 return alloc_ref_with_prefix("", 0, name);
Krzysztof Kowalczyk737922a2008-05-10 23:26:58[diff] [blame]940}
941
Jeff King59a57752011-06-07 23:03:03[diff] [blame]942struct ref *copy_ref(const struct ref *ref)
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]943{
Jay Soffian7b3db092009-02-27 19:10:04[diff] [blame]944 struct ref *cpy;
945 size_t len;
946 if (!ref)
947 return NULL;
Jeff King50a6c8e2016-02-22 22:44:35[diff] [blame]948 len = st_add3(sizeof(struct ref), strlen(ref->name), 1);
949 cpy = xmalloc(len);
950 memcpy(cpy, ref, len);
Jay Soffian7b3db092009-02-27 19:10:04[diff] [blame]951 cpy->next = NULL;
Jeff King8c53f072015-01-13 01:59:09[diff] [blame]952 cpy->symref = xstrdup_or_null(ref->symref);
953 cpy->remote_status = xstrdup_or_null(ref->remote_status);
Jay Soffian7b3db092009-02-27 19:10:04[diff] [blame]954 cpy->peer_ref = copy_ref(ref->peer_ref);
955 return cpy;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]956}
957
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]958struct ref *copy_ref_list(const struct ref *ref)
959{
960 struct ref *ret = NULL;
961 struct ref **tail = &ret;
962 while (ref) {
963 *tail = copy_ref(ref);
964 ref = ref->next;
965 tail = &((*tail)->next);
966 }
967 return ret;
968}
969
Nanako Shiraishi697d7f52008-09-25 09:41:00[diff] [blame]970static void free_ref(struct ref *ref)
Daniel Barkalowbe885d92008-04-26 19:53:12[diff] [blame]971{
972 if (!ref)
973 return;
Jay Soffian7b3db092009-02-27 19:10:04[diff] [blame]974 free_ref(ref->peer_ref);
Daniel Barkalowbe885d92008-04-26 19:53:12[diff] [blame]975 free(ref->remote_status);
976 free(ref->symref);
977 free(ref);
978}
979
Daniel Barkalowdfd255d2007-07-10 04:47:23[diff] [blame]980void free_refs(struct ref *ref)
981{
982 struct ref *next;
983 while (ref) {
984 next = ref->next;
Daniel Barkalowbe885d92008-04-26 19:53:12[diff] [blame]985 free_ref(ref);
Daniel Barkalowdfd255d2007-07-10 04:47:23[diff] [blame]986 ref = next;
987 }
988}
989
Jeff Kinged81c762012-05-21 22:19:28[diff] [blame]990int ref_compare_name(const void *va, const void *vb)
991{
992 const struct ref *a = va, *b = vb;
993 return strcmp(a->name, b->name);
994}
995
996static void *ref_list_get_next(const void *a)
997{
998 return ((const struct ref *)a)->next;
999}
1000
1001static void ref_list_set_next(void *a, void *next)
1002{
1003 ((struct ref *)a)->next = next;
1004}
1005
1006void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *))
1007{
1008 *l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp);
1009}
1010
Junio C Hamanoca024652013-12-03 23:41:15[diff] [blame]1011int count_refspec_match(const char *pattern,
1012 struct ref *refs,
1013 struct ref **matched_ref)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1014{
1015 int patlen = strlen(pattern);
1016 struct ref *matched_weak = NULL;
1017 struct ref *matched = NULL;
1018 int weak_match = 0;
1019 int match = 0;
1020
1021 for (weak_match = match = 0; refs; refs = refs->next) {
1022 char *name = refs->name;
1023 int namelen = strlen(name);
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1024
Michael Haggerty54457fe2014-01-14 03:16:07[diff] [blame]1025 if (!refname_match(pattern, name))
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1026 continue;
1027
1028 /* A match is "weak" if it is with refs outside
1029 * heads or tags, and did not specify the pattern
1030 * in full (e.g. "refs/remotes/origin/master") or at
1031 * least from the toplevel (e.g. "remotes/origin/master");
1032 * otherwise "git push $URL master" would result in
1033 * ambiguity between remotes/origin/master and heads/master
1034 * at the remote site.
1035 */
1036 if (namelen != patlen &&
1037 patlen != namelen - 5 &&
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1038 !starts_with(name, "refs/heads/") &&
1039 !starts_with(name, "refs/tags/")) {
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1040 /* We want to catch the case where only weak
1041 * matches are found and there are multiple
1042 * matches, and where more than one strong
1043 * matches are found, as ambiguous. One
1044 * strong match with zero or more weak matches
1045 * are acceptable as a unique match.
1046 */
1047 matched_weak = refs;
1048 weak_match++;
1049 }
1050 else {
1051 matched = refs;
1052 match++;
1053 }
1054 }
1055 if (!matched) {
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1056 if (matched_ref)
1057 *matched_ref = matched_weak;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1058 return weak_match;
1059 }
1060 else {
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1061 if (matched_ref)
1062 *matched_ref = matched;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1063 return match;
1064 }
1065}
1066
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1067static void tail_link_ref(struct ref *ref, struct ref ***tail)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1068{
1069 **tail = ref;
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1070 while (ref->next)
1071 ref = ref->next;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1072 *tail = &ref->next;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1073}
1074
Felipe Contreras67655242012-02-22 22:43:40[diff] [blame]1075static struct ref *alloc_delete_ref(void)
1076{
1077 struct ref *ref = alloc_ref("(delete)");
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1078 oidclr(&ref->new_oid);
Felipe Contreras67655242012-02-22 22:43:40[diff] [blame]1079 return ref;
1080}
1081
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1082static int try_explicit_object_name(const char *name,
1083 struct ref **match)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1084{
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1085 struct object_id oid;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1086
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1087 if (!*name) {
1088 if (match)
1089 *match = alloc_delete_ref();
1090 return 0;
1091 }
1092
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1093 if (get_sha1(name, oid.hash))
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1094 return -1;
1095
1096 if (match) {
1097 *match = alloc_ref(name);
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1098 oidcpy(&(*match)->new_oid, &oid);
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1099 }
1100 return 0;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1101}
1102
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1103static struct ref *make_linked_ref(const char *name, struct ref ***tail)
Junio C Hamano163f0ee2007-06-09 07:07:34[diff] [blame]1104{
René Scharfe59c69c02008-10-18 08:44:18[diff] [blame]1105 struct ref *ret = alloc_ref(name);
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1106 tail_link_ref(ret, tail);
1107 return ret;
Junio C Hamano163f0ee2007-06-09 07:07:34[diff] [blame]1108}
1109
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1110static char *guess_ref(const char *name, struct ref *peer)
1111{
1112 struct strbuf buf = STRBUF_INIT;
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1113 struct object_id oid;
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1114
Ronnie Sahlberg7695d112014-07-15 19:59:36[diff] [blame]1115 const char *r = resolve_ref_unsafe(peer->name, RESOLVE_REF_READING,
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1116 oid.hash, NULL);
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1117 if (!r)
1118 return NULL;
1119
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1120 if (starts_with(r, "refs/heads/"))
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1121 strbuf_addstr(&buf, "refs/heads/");
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1122 else if (starts_with(r, "refs/tags/"))
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1123 strbuf_addstr(&buf, "refs/tags/");
1124 else
1125 return NULL;
1126
1127 strbuf_addstr(&buf, name);
1128 return strbuf_detach(&buf, NULL);
1129}
1130
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1131static int match_explicit_lhs(struct ref *src,
1132 struct refspec *rs,
1133 struct ref **match,
1134 int *allocated_match)
1135{
1136 switch (count_refspec_match(rs->src, src, match)) {
1137 case 1:
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1138 if (allocated_match)
1139 *allocated_match = 0;
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1140 return 0;
1141 case 0:
1142 /* The source could be in the get_sha1() format
1143 * not a reference name. :refs/other is a
1144 * way to delete 'other' ref at the remote end.
1145 */
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1146 if (try_explicit_object_name(rs->src, match) < 0)
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1147 return error("src refspec %s does not match any.", rs->src);
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1148 if (allocated_match)
1149 *allocated_match = 1;
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1150 return 0;
1151 default:
1152 return error("src refspec %s matches more than one.", rs->src);
1153 }
1154}
1155
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1156static int match_explicit(struct ref *src, struct ref *dst,
1157 struct ref ***dst_tail,
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1158 struct refspec *rs)
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1159{
1160 struct ref *matched_src, *matched_dst;
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1161 int allocated_src;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1162
1163 const char *dst_value = rs->dst;
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1164 char *dst_guess;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1165
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1166 if (rs->pattern || rs->matching)
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1167 return 0;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1168
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1169 matched_src = matched_dst = NULL;
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1170 if (match_explicit_lhs(src, rs, &matched_src, &allocated_src) < 0)
1171 return -1;
Junio C Hamano3c8b7df2007-06-09 07:14:04[diff] [blame]1172
Shawn O. Pearce4491e622007-09-25 04:13:25[diff] [blame]1173 if (!dst_value) {
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1174 struct object_id oid;
Daniel Barkalow9f0ea7e2008-02-20 17:54:05[diff] [blame]1175 int flag;
1176
Ronnie Sahlberg7695d112014-07-15 19:59:36[diff] [blame]1177 dst_value = resolve_ref_unsafe(matched_src->name,
1178 RESOLVE_REF_READING,
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1179 oid.hash, &flag);
Daniel Barkalow9f0ea7e2008-02-20 17:54:05[diff] [blame]1180 if (!dst_value ||
1181 ((flag & REF_ISSYMREF) &&
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1182 !starts_with(dst_value, "refs/heads/")))
Daniel Barkalow9f0ea7e2008-02-20 17:54:05[diff] [blame]1183 die("%s cannot be resolved to branch.",
1184 matched_src->name);
Shawn O. Pearce4491e622007-09-25 04:13:25[diff] [blame]1185 }
Junio C Hamano3c8b7df2007-06-09 07:14:04[diff] [blame]1186
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1187 switch (count_refspec_match(dst_value, dst, &matched_dst)) {
1188 case 1:
1189 break;
1190 case 0:
René Scharfe50e19a82014-06-06 17:24:48[diff] [blame]1191 if (starts_with(dst_value, "refs/"))
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1192 matched_dst = make_linked_ref(dst_value, dst_tail);
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1193 else if (is_null_oid(&matched_src->new_oid))
Jeff King5742c822012-07-03 18:04:39[diff] [blame]1194 error("unable to delete '%s': remote ref does not exist",
1195 dst_value);
Brian Gianforcaroeeefa7c2009-09-01 05:35:10[diff] [blame]1196 else if ((dst_guess = guess_ref(dst_value, matched_src)))
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1197 matched_dst = make_linked_ref(dst_guess, dst_tail);
Junio C Hamano3c8b7df2007-06-09 07:14:04[diff] [blame]1198 else
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1199 error("unable to push to unqualified destination: %s\n"
1200 "The destination refspec neither matches an "
1201 "existing ref on the remote nor\n"
1202 "begins with refs/, and we are unable to "
1203 "guess a prefix based on the source ref.",
1204 dst_value);
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1205 break;
1206 default:
Junio C Hamano3c8b7df2007-06-09 07:14:04[diff] [blame]1207 matched_dst = NULL;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1208 error("dst refspec %s matches more than one.",
1209 dst_value);
1210 break;
1211 }
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1212 if (!matched_dst)
1213 return -1;
1214 if (matched_dst->peer_ref)
1215 return error("dst ref %s receives from more than one src.",
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1216 matched_dst->name);
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1217 else {
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1218 matched_dst->peer_ref = allocated_src ?
1219 matched_src :
1220 copy_ref(matched_src);
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1221 matched_dst->force = rs->force;
1222 }
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1223 return 0;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1224}
1225
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1226static int match_explicit_refs(struct ref *src, struct ref *dst,
1227 struct ref ***dst_tail, struct refspec *rs,
1228 int rs_nr)
1229{
1230 int i, errs;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1231 for (i = errs = 0; i < rs_nr; i++)
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1232 errs += match_explicit(src, dst, dst_tail, &rs[i]);
1233 return errs;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1234}
1235
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1236static char *get_ref_match(const struct refspec *rs, int rs_nr, const struct ref *ref,
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1237 int send_mirror, int direction, const struct refspec **ret_pat)
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1238{
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1239 const struct refspec *pat;
1240 char *name;
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1241 int i;
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1242 int matching_refs = -1;
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1243 for (i = 0; i < rs_nr; i++) {
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1244 if (rs[i].matching &&
1245 (matching_refs == -1 || rs[i].force)) {
1246 matching_refs = i;
1247 continue;
1248 }
1249
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1250 if (rs[i].pattern) {
1251 const char *dst_side = rs[i].dst ? rs[i].dst : rs[i].src;
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1252 int match;
1253 if (direction == FROM_SRC)
1254 match = match_name_with_pattern(rs[i].src, ref->name, dst_side, &name);
1255 else
1256 match = match_name_with_pattern(dst_side, ref->name, rs[i].src, &name);
1257 if (match) {
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1258 matching_refs = i;
1259 break;
1260 }
1261 }
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1262 }
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1263 if (matching_refs == -1)
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1264 return NULL;
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1265
1266 pat = rs + matching_refs;
1267 if (pat->matching) {
1268 /*
1269 * "matching refs"; traditionally we pushed everything
1270 * including refs outside refs/heads/ hierarchy, but
1271 * that does not make much sense these days.
1272 */
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1273 if (!send_mirror && !starts_with(ref->name, "refs/heads/"))
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1274 return NULL;
1275 name = xstrdup(ref->name);
1276 }
1277 if (ret_pat)
1278 *ret_pat = pat;
1279 return name;
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1280}
1281
Clemens Buchacher6d2bf962009-05-31 14:26:48[diff] [blame]1282static struct ref **tail_ref(struct ref **head)
1283{
1284 struct ref **tail = head;
1285 while (*tail)
1286 tail = &((*tail)->next);
1287 return tail;
1288}
1289
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1290struct tips {
1291 struct commit **tip;
1292 int nr, alloc;
1293};
1294
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1295static void add_to_tips(struct tips *tips, const struct object_id *oid)
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1296{
1297 struct commit *commit;
1298
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1299 if (is_null_oid(oid))
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1300 return;
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1301 commit = lookup_commit_reference_gently(oid->hash, 1);
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1302 if (!commit || (commit->object.flags & TMP_MARK))
1303 return;
1304 commit->object.flags |= TMP_MARK;
1305 ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc);
1306 tips->tip[tips->nr++] = commit;
1307}
1308
1309static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail)
1310{
1311 struct string_list dst_tag = STRING_LIST_INIT_NODUP;
1312 struct string_list src_tag = STRING_LIST_INIT_NODUP;
1313 struct string_list_item *item;
1314 struct ref *ref;
1315 struct tips sent_tips;
1316
1317 /*
1318 * Collect everything we know they would have at the end of
1319 * this push, and collect all tags they have.
1320 */
1321 memset(&sent_tips, 0, sizeof(sent_tips));
1322 for (ref = *dst; ref; ref = ref->next) {
1323 if (ref->peer_ref &&
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1324 !is_null_oid(&ref->peer_ref->new_oid))
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1325 add_to_tips(&sent_tips, &ref->peer_ref->new_oid);
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1326 else
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1327 add_to_tips(&sent_tips, &ref->old_oid);
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1328 if (starts_with(ref->name, "refs/tags/"))
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1329 string_list_append(&dst_tag, ref->name);
1330 }
1331 clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK);
1332
Michael Haggerty3383e192014-11-25 08:02:35[diff] [blame]1333 string_list_sort(&dst_tag);
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1334
1335 /* Collect tags they do not have. */
1336 for (ref = src; ref; ref = ref->next) {
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1337 if (!starts_with(ref->name, "refs/tags/"))
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1338 continue; /* not a tag */
1339 if (string_list_has_string(&dst_tag, ref->name))
1340 continue; /* they already have it */
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1341 if (sha1_object_info(ref->new_oid.hash, NULL) != OBJ_TAG)
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1342 continue; /* be conservative */
1343 item = string_list_append(&src_tag, ref->name);
1344 item->util = ref;
1345 }
1346 string_list_clear(&dst_tag, 0);
1347
1348 /*
1349 * At this point, src_tag lists tags that are missing from
1350 * dst, and sent_tips lists the tips we are pushing or those
1351 * that we know they already have. An element in the src_tag
1352 * that is an ancestor of any of the sent_tips needs to be
1353 * sent to the other side.
1354 */
1355 if (sent_tips.nr) {
1356 for_each_string_list_item(item, &src_tag) {
1357 struct ref *ref = item->util;
1358 struct ref *dst_ref;
1359 struct commit *commit;
1360
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1361 if (is_null_oid(&ref->new_oid))
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1362 continue;
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1363 commit = lookup_commit_reference_gently(ref->new_oid.hash, 1);
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1364 if (!commit)
1365 /* not pushing a commit, which is not an error */
1366 continue;
1367
1368 /*
1369 * Is this tag, which they do not have, reachable from
1370 * any of the commits we are sending?
1371 */
1372 if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip))
1373 continue;
1374
1375 /* Add it in */
1376 dst_ref = make_linked_ref(ref->name, dst_tail);
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1377 oidcpy(&dst_ref->new_oid, &ref->new_oid);
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1378 dst_ref->peer_ref = copy_ref(ref);
1379 }
1380 }
1381 string_list_clear(&src_tag, 0);
1382 free(sent_tips.tip);
1383}
1384
Junio C Hamano47a59182013-07-08 20:56:53[diff] [blame]1385struct ref *find_ref_by_name(const struct ref *list, const char *name)
1386{
1387 for ( ; list; list = list->next)
1388 if (!strcmp(list->name, name))
1389 return (struct ref *)list;
1390 return NULL;
1391}
1392
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1393static void prepare_ref_index(struct string_list *ref_index, struct ref *ref)
1394{
1395 for ( ; ref; ref = ref->next)
1396 string_list_append_nodup(ref_index, ref->name)->util = ref;
1397
Michael Haggerty3383e192014-11-25 08:02:35[diff] [blame]1398 string_list_sort(ref_index);
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1399}
1400
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1401/*
Jeff Kingba928c12014-03-05 19:04:54[diff] [blame]1402 * Given only the set of local refs, sanity-check the set of push
1403 * refspecs. We can't catch all errors that match_push_refs would,
1404 * but we can catch some errors early before even talking to the
1405 * remote side.
1406 */
1407int check_push_refs(struct ref *src, int nr_refspec, const char **refspec_names)
1408{
1409 struct refspec *refspec = parse_push_refspec(nr_refspec, refspec_names);
1410 int ret = 0;
1411 int i;
1412
1413 for (i = 0; i < nr_refspec; i++) {
1414 struct refspec *rs = refspec + i;
1415
1416 if (rs->pattern || rs->matching)
1417 continue;
1418
1419 ret |= match_explicit_lhs(src, rs, NULL, NULL);
1420 }
1421
1422 free_refspec(nr_refspec, refspec);
1423 return ret;
1424}
1425
1426/*
Junio C Hamano29753cd2011-09-09 18:54:58[diff] [blame]1427 * Given the set of refs the local repository has, the set of refs the
1428 * remote repository has, and the refspec used for push, determine
1429 * what remote refs we will update and with what value by setting
1430 * peer_ref (which object is being pushed) and force (if the push is
1431 * forced) in elements of "dst". The function may add new elements to
1432 * dst (e.g. pushing to a new branch, done in match_explicit_refs).
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1433 */
Junio C Hamano29753cd2011-09-09 18:54:58[diff] [blame]1434int match_push_refs(struct ref *src, struct ref **dst,
1435 int nr_refspec, const char **refspec, int flags)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1436{
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1437 struct refspec *rs;
Andy Whitcroft28b9d6e2007-11-09 23:32:10[diff] [blame]1438 int send_all = flags & MATCH_REFS_ALL;
1439 int send_mirror = flags & MATCH_REFS_MIRROR;
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1440 int send_prune = flags & MATCH_REFS_PRUNE;
Jay Soffian5f48cb92009-02-25 08:32:17[diff] [blame]1441 int errs;
Linus Torvalds2af202b2009-06-18 17:28:43[diff] [blame]1442 static const char *default_refspec[] = { ":", NULL };
Felipe Contrerasb1d8b1f2012-02-22 22:43:38[diff] [blame]1443 struct ref *ref, **dst_tail = tail_ref(dst);
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1444 struct string_list dst_ref_index = STRING_LIST_INIT_NODUP;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1445
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1446 if (!nr_refspec) {
1447 nr_refspec = 1;
1448 refspec = default_refspec;
1449 }
1450 rs = parse_push_refspec(nr_refspec, (const char **) refspec);
Clemens Buchacher6d2bf962009-05-31 14:26:48[diff] [blame]1451 errs = match_explicit_refs(src, *dst, &dst_tail, rs, nr_refspec);
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1452
1453 /* pick the remainder */
Felipe Contrerasb1d8b1f2012-02-22 22:43:38[diff] [blame]1454 for (ref = src; ref; ref = ref->next) {
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1455 struct string_list_item *dst_item;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1456 struct ref *dst_peer;
Alex Riesen6e66bf32007-06-07 23:43:05[diff] [blame]1457 const struct refspec *pat = NULL;
1458 char *dst_name;
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1459
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1460 dst_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_SRC, &pat);
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1461 if (!dst_name)
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1462 continue;
1463
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1464 if (!dst_ref_index.nr)
1465 prepare_ref_index(&dst_ref_index, *dst);
1466
1467 dst_item = string_list_lookup(&dst_ref_index, dst_name);
1468 dst_peer = dst_item ? dst_item->util : NULL;
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1469 if (dst_peer) {
1470 if (dst_peer->peer_ref)
1471 /* We're already sending something to this ref. */
1472 goto free_name;
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1473 } else {
1474 if (pat->matching && !(send_all || send_mirror))
1475 /*
1476 * Remote doesn't have it, and we have no
1477 * explicit pattern, and we don't have
Justin Lebar01689902014-03-31 22:11:46[diff] [blame]1478 * --all or --mirror.
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1479 */
1480 goto free_name;
1481
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1482 /* Create a new one and link it */
Clemens Buchacher6d2bf962009-05-31 14:26:48[diff] [blame]1483 dst_peer = make_linked_ref(dst_name, &dst_tail);
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1484 oidcpy(&dst_peer->new_oid, &ref->new_oid);
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1485 string_list_insert(&dst_ref_index,
1486 dst_peer->name)->util = dst_peer;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1487 }
Felipe Contrerasb1d8b1f2012-02-22 22:43:38[diff] [blame]1488 dst_peer->peer_ref = copy_ref(ref);
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1489 dst_peer->force = pat->force;
Alex Riesen6e66bf32007-06-07 23:43:05[diff] [blame]1490 free_name:
1491 free(dst_name);
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1492 }
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1493
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1494 string_list_clear(&dst_ref_index, 0);
1495
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1496 if (flags & MATCH_REFS_FOLLOW_TAGS)
1497 add_missing_tags(src, dst, &dst_tail);
1498
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1499 if (send_prune) {
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1500 struct string_list src_ref_index = STRING_LIST_INIT_NODUP;
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1501 /* check for missing refs on the remote */
1502 for (ref = *dst; ref; ref = ref->next) {
1503 char *src_name;
1504
1505 if (ref->peer_ref)
1506 /* We're already sending something to this ref. */
1507 continue;
1508
1509 src_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_DST, NULL);
1510 if (src_name) {
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1511 if (!src_ref_index.nr)
1512 prepare_ref_index(&src_ref_index, src);
1513 if (!string_list_has_string(&src_ref_index,
1514 src_name))
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1515 ref->peer_ref = alloc_delete_ref();
1516 free(src_name);
1517 }
1518 }
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1519 string_list_clear(&src_ref_index, 0);
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1520 }
Jay Soffian5f48cb92009-02-25 08:32:17[diff] [blame]1521 if (errs)
1522 return -1;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1523 return 0;
1524}
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1525
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1526void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1527 int force_update)
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1528{
1529 struct ref *ref;
1530
1531 for (ref = remote_refs; ref; ref = ref->next) {
Chris Rorvick8c5f6f72012-11-30 01:41:36[diff] [blame]1532 int force_ref_update = ref->force || force_update;
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1533 int reject_reason = 0;
Chris Rorvick8c5f6f72012-11-30 01:41:36[diff] [blame]1534
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1535 if (ref->peer_ref)
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1536 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1537 else if (!send_mirror)
1538 continue;
1539
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1540 ref->deletion = is_null_oid(&ref->new_oid);
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1541 if (!ref->deletion &&
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1542 !oidcmp(&ref->old_oid, &ref->new_oid)) {
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1543 ref->status = REF_STATUS_UPTODATE;
1544 continue;
1545 }
1546
Chris Rorvicka272b282012-11-30 01:41:40[diff] [blame]1547 /*
Andrew Wheelerb2e93f82016-01-29 23:18:42[diff] [blame]1548 * If the remote ref has moved and is now different
1549 * from what we expect, reject any push.
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1550 *
1551 * It also is an error if the user told us to check
1552 * with the remote-tracking branch to find the value
1553 * to expect, but we did not have such a tracking
1554 * branch.
1555 */
1556 if (ref->expect_old_sha1) {
1557 if (ref->expect_old_no_trackback ||
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1558 oidcmp(&ref->old_oid, &ref->old_oid_expect))
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1559 reject_reason = REF_STATUS_REJECT_STALE;
Andrew Wheelerb2e93f82016-01-29 23:18:42[diff] [blame]1560 else
1561 /* If the ref isn't stale then force the update. */
1562 force_ref_update = 1;
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1563 }
1564
1565 /*
Andrew Wheelerb2e93f82016-01-29 23:18:42[diff] [blame]1566 * If the update isn't already rejected then check
1567 * the usual "must fast-forward" rules.
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1568 *
Junio C Hamano256b9d72013-01-16 21:02:27[diff] [blame]1569 * Decide whether an individual refspec A:B can be
1570 * pushed. The push will succeed if any of the
1571 * following are true:
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1572 *
Chris Rorvicka272b282012-11-30 01:41:40[diff] [blame]1573 * (1) the remote reference B does not exist
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1574 *
Chris Rorvicka272b282012-11-30 01:41:40[diff] [blame]1575 * (2) the remote reference B is being removed (i.e.,
1576 * pushing :B where no source is specified)
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1577 *
Junio C Hamano256b9d72013-01-16 21:02:27[diff] [blame]1578 * (3) the destination is not under refs/tags/, and
1579 * if the old and new value is a commit, the new
1580 * is a descendant of the old.
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1581 *
Chris Rorvicka272b282012-11-30 01:41:40[diff] [blame]1582 * (4) it is forced using the +A:B notation, or by
1583 * passing the --force argument
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1584 */
1585
Andrew Wheelerb2e93f82016-01-29 23:18:42[diff] [blame]1586 if (!reject_reason && !ref->deletion && !is_null_oid(&ref->old_oid)) {
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1587 if (starts_with(ref->name, "refs/tags/"))
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1588 reject_reason = REF_STATUS_REJECT_ALREADY_EXISTS;
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1589 else if (!has_object_file(&ref->old_oid))
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1590 reject_reason = REF_STATUS_REJECT_FETCH_FIRST;
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1591 else if (!lookup_commit_reference_gently(ref->old_oid.hash, 1) ||
1592 !lookup_commit_reference_gently(ref->new_oid.hash, 1))
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1593 reject_reason = REF_STATUS_REJECT_NEEDS_FORCE;
brian m. carlson6f3d57b2015-11-10 02:22:25[diff] [blame]1594 else if (!ref_newer(&ref->new_oid, &ref->old_oid))
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1595 reject_reason = REF_STATUS_REJECT_NONFASTFORWARD;
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1596 }
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1597
1598 /*
1599 * "--force" will defeat any rejection implemented
1600 * by the rules above.
1601 */
1602 if (!force_ref_update)
1603 ref->status = reject_reason;
1604 else if (reject_reason)
1605 ref->forced_update = 1;
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1606 }
1607}
1608
Junio C Hamano05e73682014-10-14 21:42:04[diff] [blame]1609static void set_merge(struct branch *ret)
1610{
Jeff King9e3751d2015-05-21 04:45:13[diff] [blame]1611 struct remote *remote;
Junio C Hamano05e73682014-10-14 21:42:04[diff] [blame]1612 char *ref;
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1613 struct object_id oid;
Junio C Hamano05e73682014-10-14 21:42:04[diff] [blame]1614 int i;
1615
Jeff Kingee2499f2015-05-21 04:45:09[diff] [blame]1616 if (!ret)
1617 return; /* no branch */
1618 if (ret->merge)
1619 return; /* already run */
1620 if (!ret->remote_name || !ret->merge_nr) {
1621 /*
1622 * no merge config; let's make sure we don't confuse callers
1623 * with a non-zero merge_nr but a NULL merge
1624 */
1625 ret->merge_nr = 0;
1626 return;
1627 }
1628
Jeff King9e3751d2015-05-21 04:45:13[diff] [blame]1629 remote = remote_get(ret->remote_name);
1630
Junio C Hamano05e73682014-10-14 21:42:04[diff] [blame]1631 ret->merge = xcalloc(ret->merge_nr, sizeof(*ret->merge));
1632 for (i = 0; i < ret->merge_nr; i++) {
1633 ret->merge[i] = xcalloc(1, sizeof(**ret->merge));
1634 ret->merge[i]->src = xstrdup(ret->merge_name[i]);
Jeff King9e3751d2015-05-21 04:45:13[diff] [blame]1635 if (!remote_find_tracking(remote, ret->merge[i]) ||
Junio C Hamano05e73682014-10-14 21:42:04[diff] [blame]1636 strcmp(ret->remote_name, "."))
1637 continue;
1638 if (dwim_ref(ret->merge_name[i], strlen(ret->merge_name[i]),
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1639 oid.hash, &ref) == 1)
Junio C Hamano05e73682014-10-14 21:42:04[diff] [blame]1640 ret->merge[i]->dst = ref;
1641 else
1642 ret->merge[i]->dst = xstrdup(ret->merge_name[i]);
1643 }
1644}
1645
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1646struct branch *branch_get(const char *name)
1647{
1648 struct branch *ret;
1649
1650 read_config();
1651 if (!name || !*name || !strcmp(name, "HEAD"))
1652 ret = current_branch;
1653 else
1654 ret = make_branch(name, 0);
Jeff Kingee2499f2015-05-21 04:45:09[diff] [blame]1655 set_merge(ret);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1656 return ret;
1657}
1658
1659int branch_has_merge_config(struct branch *branch)
1660{
1661 return branch && !!branch->merge;
1662}
1663
Shawn O. Pearce85682c12007-09-18 08:54:53[diff] [blame]1664int branch_merge_matches(struct branch *branch,
1665 int i,
1666 const char *refname)
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1667{
Shawn O. Pearce85682c12007-09-18 08:54:53[diff] [blame]1668 if (!branch || i < 0 || i >= branch->merge_nr)
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1669 return 0;
Michael Haggerty54457fe2014-01-14 03:16:07[diff] [blame]1670 return refname_match(branch->merge[i]->src, refname);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1671}
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1672
Jeff King3a429d02015-05-21 04:45:32[diff] [blame]1673__attribute((format (printf,2,3)))
1674static const char *error_buf(struct strbuf *err, const char *fmt, ...)
Jeff Kinga9f9f8c2015-05-21 04:45:28[diff] [blame]1675{
Jeff King3a429d02015-05-21 04:45:32[diff] [blame]1676 if (err) {
1677 va_list ap;
1678 va_start(ap, fmt);
1679 strbuf_vaddf(err, fmt, ap);
1680 va_end(ap);
1681 }
1682 return NULL;
1683}
1684
1685const char *branch_get_upstream(struct branch *branch, struct strbuf *err)
1686{
1687 if (!branch)
1688 return error_buf(err, _("HEAD does not point to a branch"));
Jeff King1ca41a12015-05-22 00:46:43[diff] [blame]1689
1690 if (!branch->merge || !branch->merge[0]) {
1691 /*
1692 * no merge config; is it because the user didn't define any,
1693 * or because it is not a real branch, and get_branch
1694 * auto-vivified it?
1695 */
Jeff King3a429d02015-05-21 04:45:32[diff] [blame]1696 if (!ref_exists(branch->refname))
1697 return error_buf(err, _("no such branch: '%s'"),
1698 branch->name);
Jeff King1ca41a12015-05-22 00:46:43[diff] [blame]1699 return error_buf(err,
1700 _("no upstream configured for branch '%s'"),
1701 branch->name);
1702 }
1703
1704 if (!branch->merge[0]->dst)
Jeff King3a429d02015-05-21 04:45:32[diff] [blame]1705 return error_buf(err,
1706 _("upstream branch '%s' not stored as a remote-tracking branch"),
1707 branch->merge[0]->src);
Jeff King3a429d02015-05-21 04:45:32[diff] [blame]1708
Jeff Kinga9f9f8c2015-05-21 04:45:28[diff] [blame]1709 return branch->merge[0]->dst;
1710}
1711
Jeff Kinge291c752015-05-21 04:45:36[diff] [blame]1712static const char *tracking_for_push_dest(struct remote *remote,
1713 const char *refname,
1714 struct strbuf *err)
1715{
1716 char *ret;
1717
1718 ret = apply_refspecs(remote->fetch, remote->fetch_refspec_nr, refname);
1719 if (!ret)
1720 return error_buf(err,
1721 _("push destination '%s' on remote '%s' has no local tracking branch"),
1722 refname, remote->name);
1723 return ret;
1724}
1725
1726static const char *branch_get_push_1(struct branch *branch, struct strbuf *err)
1727{
1728 struct remote *remote;
1729
1730 if (!branch)
1731 return error_buf(err, _("HEAD does not point to a branch"));
1732
1733 remote = remote_get(pushremote_for_branch(branch, NULL));
1734 if (!remote)
1735 return error_buf(err,
1736 _("branch '%s' has no remote for pushing"),
1737 branch->name);
1738
1739 if (remote->push_refspec_nr) {
1740 char *dst;
1741 const char *ret;
1742
1743 dst = apply_refspecs(remote->push, remote->push_refspec_nr,
1744 branch->refname);
1745 if (!dst)
1746 return error_buf(err,
1747 _("push refspecs for '%s' do not include '%s'"),
1748 remote->name, branch->name);
1749
1750 ret = tracking_for_push_dest(remote, dst, err);
1751 free(dst);
1752 return ret;
1753 }
1754
1755 if (remote->mirror)
1756 return tracking_for_push_dest(remote, branch->refname, err);
1757
1758 switch (push_default) {
1759 case PUSH_DEFAULT_NOTHING:
1760 return error_buf(err, _("push has no destination (push.default is 'nothing')"));
1761
1762 case PUSH_DEFAULT_MATCHING:
1763 case PUSH_DEFAULT_CURRENT:
1764 return tracking_for_push_dest(remote, branch->refname, err);
1765
1766 case PUSH_DEFAULT_UPSTREAM:
1767 return branch_get_upstream(branch, err);
1768
1769 case PUSH_DEFAULT_UNSPECIFIED:
1770 case PUSH_DEFAULT_SIMPLE:
1771 {
1772 const char *up, *cur;
1773
1774 up = branch_get_upstream(branch, err);
1775 if (!up)
1776 return NULL;
1777 cur = tracking_for_push_dest(remote, branch->refname, err);
1778 if (!cur)
1779 return NULL;
1780 if (strcmp(cur, up))
1781 return error_buf(err,
1782 _("cannot resolve 'simple' push to a single destination"));
1783 return cur;
1784 }
1785 }
1786
1787 die("BUG: unhandled push situation");
1788}
1789
1790const char *branch_get_push(struct branch *branch, struct strbuf *err)
1791{
1792 if (!branch->push_tracking_ref)
1793 branch->push_tracking_ref = branch_get_push_1(branch, err);
1794 return branch->push_tracking_ref;
1795}
1796
Junio C Hamanof8fb9712012-12-11 21:00:52[diff] [blame]1797static int ignore_symref_update(const char *refname)
1798{
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1799 struct object_id oid;
Junio C Hamanof8fb9712012-12-11 21:00:52[diff] [blame]1800 int flag;
1801
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1802 if (!resolve_ref_unsafe(refname, 0, oid.hash, &flag))
Junio C Hamanof8fb9712012-12-11 21:00:52[diff] [blame]1803 return 0; /* non-existing refs are OK */
1804 return (flag & REF_ISSYMREF);
1805}
1806
Michael Haggertyf166db22013-10-30 05:32:56[diff] [blame]1807/*
1808 * Create and return a list of (struct ref) consisting of copies of
1809 * each remote_ref that matches refspec. refspec must be a pattern.
1810 * Fill in the copies' peer_ref to describe the local tracking refs to
1811 * which they map. Omit any references that would map to an existing
1812 * local symbolic ref.
1813 */
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1814static struct ref *get_expanded_map(const struct ref *remote_refs,
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1815 const struct refspec *refspec)
1816{
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1817 const struct ref *ref;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1818 struct ref *ret = NULL;
1819 struct ref **tail = &ret;
1820
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1821 for (ref = remote_refs; ref; ref = ref->next) {
Michael Haggertye31a17f2013-10-30 05:32:57[diff] [blame]1822 char *expn_name = NULL;
1823
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1824 if (strchr(ref->name, '^'))
1825 continue; /* a dereference item */
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]1826 if (match_name_with_pattern(refspec->src, ref->name,
Junio C Hamanof8fb9712012-12-11 21:00:52[diff] [blame]1827 refspec->dst, &expn_name) &&
1828 !ignore_symref_update(expn_name)) {
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1829 struct ref *cpy = copy_ref(ref);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1830
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]1831 cpy->peer_ref = alloc_ref(expn_name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1832 if (refspec->force)
1833 cpy->peer_ref->force = 1;
1834 *tail = cpy;
1835 tail = &cpy->next;
1836 }
Michael Haggertye31a17f2013-10-30 05:32:57[diff] [blame]1837 free(expn_name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1838 }
1839
1840 return ret;
1841}
1842
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1843static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name)
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1844{
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1845 const struct ref *ref;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1846 for (ref = refs; ref; ref = ref->next) {
Michael Haggerty54457fe2014-01-14 03:16:07[diff] [blame]1847 if (refname_match(name, ref->name))
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1848 return ref;
1849 }
1850 return NULL;
1851}
1852
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1853struct ref *get_remote_ref(const struct ref *remote_refs, const char *name)
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1854{
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1855 const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1856
1857 if (!ref)
Junio C Hamano9ad7c5a2007-10-27 06:09:48[diff] [blame]1858 return NULL;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1859
1860 return copy_ref(ref);
1861}
1862
1863static struct ref *get_local_ref(const char *name)
1864{
Clemens Buchacher3eb96992009-06-17 13:38:36[diff] [blame]1865 if (!name || name[0] == '\0')
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1866 return NULL;
1867
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1868 if (starts_with(name, "refs/"))
René Scharfe59c69c02008-10-18 08:44:18[diff] [blame]1869 return alloc_ref(name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1870
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1871 if (starts_with(name, "heads/") ||
1872 starts_with(name, "tags/") ||
1873 starts_with(name, "remotes/"))
René Scharfe80097682008-10-18 08:37:40[diff] [blame]1874 return alloc_ref_with_prefix("refs/", 5, name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1875
René Scharfe80097682008-10-18 08:37:40[diff] [blame]1876 return alloc_ref_with_prefix("refs/heads/", 11, name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1877}
1878
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1879int get_fetch_map(const struct ref *remote_refs,
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1880 const struct refspec *refspec,
Junio C Hamano9ad7c5a2007-10-27 06:09:48[diff] [blame]1881 struct ref ***tail,
1882 int missing_ok)
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1883{
Daniel Barkalowef00d152008-03-18 02:05:23[diff] [blame]1884 struct ref *ref_map, **rmp;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1885
1886 if (refspec->pattern) {
1887 ref_map = get_expanded_map(remote_refs, refspec);
1888 } else {
Junio C Hamano9ad7c5a2007-10-27 06:09:48[diff] [blame]1889 const char *name = refspec->src[0] ? refspec->src : "HEAD";
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1890
Junio C Hamano6e7b66e2013-01-29 22:02:15[diff] [blame]1891 if (refspec->exact_sha1) {
1892 ref_map = alloc_ref(name);
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1893 get_oid_hex(name, &ref_map->old_oid);
Junio C Hamano6e7b66e2013-01-29 22:02:15[diff] [blame]1894 } else {
1895 ref_map = get_remote_ref(remote_refs, name);
1896 }
Junio C Hamano9ad7c5a2007-10-27 06:09:48[diff] [blame]1897 if (!missing_ok && !ref_map)
1898 die("Couldn't find remote ref %s", name);
1899 if (ref_map) {
1900 ref_map->peer_ref = get_local_ref(refspec->dst);
1901 if (ref_map->peer_ref && refspec->force)
1902 ref_map->peer_ref->force = 1;
1903 }
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1904 }
1905
Daniel Barkalowef00d152008-03-18 02:05:23[diff] [blame]1906 for (rmp = &ref_map; *rmp; ) {
1907 if ((*rmp)->peer_ref) {
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1908 if (!starts_with((*rmp)->peer_ref->name, "refs/") ||
Junio C Hamano5c08c1f2012-05-04 22:35:18[diff] [blame]1909 check_refname_format((*rmp)->peer_ref->name, 0)) {
Daniel Barkalowef00d152008-03-18 02:05:23[diff] [blame]1910 struct ref *ignore = *rmp;
1911 error("* Ignoring funny ref '%s' locally",
1912 (*rmp)->peer_ref->name);
1913 *rmp = (*rmp)->next;
1914 free(ignore->peer_ref);
1915 free(ignore);
1916 continue;
1917 }
1918 }
1919 rmp = &((*rmp)->next);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1920 }
1921
Alex Riesen8f70a762007-10-12 20:40:04[diff] [blame]1922 if (ref_map)
1923 tail_link_ref(ref_map, tail);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1924
1925 return 0;
1926}
Daniel Barkalowbe885d92008-04-26 19:53:12[diff] [blame]1927
1928int resolve_remote_symref(struct ref *ref, struct ref *list)
1929{
1930 if (!ref->symref)
1931 return 0;
1932 for (; list; list = list->next)
1933 if (!strcmp(ref->symref, list->name)) {
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]1934 oidcpy(&ref->old_oid, &list->old_oid);
Daniel Barkalowbe885d92008-04-26 19:53:12[diff] [blame]1935 return 0;
1936 }
1937 return 1;
1938}
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1939
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]1940static void unmark_and_free(struct commit_list *list, unsigned int mark)
1941{
1942 while (list) {
René Scharfee510ab82015-10-24 16:21:31[diff] [blame]1943 struct commit *commit = pop_commit(&list);
1944 commit->object.flags &= ~mark;
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]1945 }
1946}
1947
brian m. carlson6f3d57b2015-11-10 02:22:25[diff] [blame]1948int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid)
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]1949{
1950 struct object *o;
1951 struct commit *old, *new;
1952 struct commit_list *list, *used;
1953 int found = 0;
1954
Junio C Hamano75e5c0d2013-01-23 21:55:30[diff] [blame]1955 /*
1956 * Both new and old must be commit-ish and new is descendant of
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]1957 * old. Otherwise we require --force.
1958 */
brian m. carlson6f3d57b2015-11-10 02:22:25[diff] [blame]1959 o = deref_tag(parse_object(old_oid->hash), NULL, 0);
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]1960 if (!o || o->type != OBJ_COMMIT)
1961 return 0;
1962 old = (struct commit *) o;
1963
brian m. carlson6f3d57b2015-11-10 02:22:25[diff] [blame]1964 o = deref_tag(parse_object(new_oid->hash), NULL, 0);
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]1965 if (!o || o->type != OBJ_COMMIT)
1966 return 0;
1967 new = (struct commit *) o;
1968
1969 if (parse_commit(new) < 0)
1970 return 0;
1971
1972 used = list = NULL;
1973 commit_list_insert(new, &list);
1974 while (list) {
1975 new = pop_most_recent_commit(&list, TMP_MARK);
1976 commit_list_insert(new, &used);
1977 if (new == old) {
1978 found = 1;
1979 break;
1980 }
1981 }
1982 unmark_and_free(list, TMP_MARK);
1983 unmark_and_free(used, TMP_MARK);
1984 return found;
1985}
1986
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1987/*
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1988 * Compare a branch with its upstream, and save their differences (number
Jeff King979cb242015-05-22 00:49:11[diff] [blame]1989 * of commits) in *num_ours and *num_theirs. The name of the upstream branch
1990 * (or NULL if no upstream is defined) is returned via *upstream_name, if it
1991 * is not itself NULL.
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1992 *
Jeff King979cb242015-05-22 00:49:11[diff] [blame]1993 * Returns -1 if num_ours and num_theirs could not be filled in (e.g., no
1994 * upstream defined, or ref does not exist), 0 otherwise.
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1995 */
Jeff King979cb242015-05-22 00:49:11[diff] [blame]1996int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs,
1997 const char **upstream_name)
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1998{
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]1999 struct object_id oid;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2000 struct commit *ours, *theirs;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2001 struct rev_info revs;
Jeff King0b282cc2015-09-24 21:07:58[diff] [blame]2002 const char *base;
2003 struct argv_array argv = ARGV_ARRAY_INIT;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2004
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2005 /* Cannot stat unless we are marked to build on top of somebody else. */
Jeff King3a429d02015-05-21 04:45:32[diff] [blame]2006 base = branch_get_upstream(branch, NULL);
Jeff King979cb242015-05-22 00:49:11[diff] [blame]2007 if (upstream_name)
2008 *upstream_name = base;
Jeff Kinga9f9f8c2015-05-21 04:45:28[diff] [blame]2009 if (!base)
Jeff King979cb242015-05-22 00:49:11[diff] [blame]2010 return -1;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2011
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2012 /* Cannot stat if what we used to build on no longer exists */
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]2013 if (read_ref(base, oid.hash))
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2014 return -1;
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]2015 theirs = lookup_commit_reference(oid.hash);
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2016 if (!theirs)
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2017 return -1;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2018
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]2019 if (read_ref(branch->refname, oid.hash))
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2020 return -1;
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]2021 ours = lookup_commit_reference(oid.hash);
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2022 if (!ours)
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2023 return -1;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2024
2025 /* are we the same? */
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2026 if (theirs == ours) {
2027 *num_theirs = *num_ours = 0;
Jeff King979cb242015-05-22 00:49:11[diff] [blame]2028 return 0;
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2029 }
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2030
Junio C Hamano8fbf8792009-04-21 23:32:18[diff] [blame]2031 /* Run "rev-list --left-right ours...theirs" internally... */
Jeff King0b282cc2015-09-24 21:07:58[diff] [blame]2032 argv_array_push(&argv, ""); /* ignored */
2033 argv_array_push(&argv, "--left-right");
2034 argv_array_pushf(&argv, "%s...%s",
brian m. carlsonf2fd0762015-11-10 02:22:28[diff] [blame]2035 oid_to_hex(&ours->object.oid),
2036 oid_to_hex(&theirs->object.oid));
Jeff King0b282cc2015-09-24 21:07:58[diff] [blame]2037 argv_array_push(&argv, "--");
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2038
2039 init_revisions(&revs, NULL);
Jeff King0b282cc2015-09-24 21:07:58[diff] [blame]2040 setup_revisions(argv.argc, argv.argv, &revs, NULL);
Stefan Beller81c3ce32014-08-10 21:33:26[diff] [blame]2041 if (prepare_revision_walk(&revs))
2042 die("revision walk setup failed");
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2043
2044 /* ... and count the commits on each side. */
2045 *num_ours = 0;
2046 *num_theirs = 0;
2047 while (1) {
2048 struct commit *c = get_revision(&revs);
2049 if (!c)
2050 break;
2051 if (c->object.flags & SYMMETRIC_LEFT)
2052 (*num_ours)++;
2053 else
2054 (*num_theirs)++;
2055 }
Junio C Hamanoc0234b22008-07-03 19:09:48[diff] [blame]2056
2057 /* clear object flags smudged by the above traversal */
2058 clear_commit_marks(ours, ALL_REV_FLAGS);
2059 clear_commit_marks(theirs, ALL_REV_FLAGS);
Jeff King0b282cc2015-09-24 21:07:58[diff] [blame]2060
2061 argv_array_clear(&argv);
Jeff King979cb242015-05-22 00:49:11[diff] [blame]2062 return 0;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2063}
2064
2065/*
2066 * Return true when there is anything to report, otherwise false.
2067 */
2068int format_tracking_info(struct branch *branch, struct strbuf *sb)
2069{
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2070 int ours, theirs;
Jeff King979cb242015-05-22 00:49:11[diff] [blame]2071 const char *full_base;
Stefan Beller2f50bab2014-08-10 19:43:33[diff] [blame]2072 char *base;
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2073 int upstream_is_gone = 0;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2074
Jeff King979cb242015-05-22 00:49:11[diff] [blame]2075 if (stat_tracking_info(branch, &ours, &theirs, &full_base) < 0) {
2076 if (!full_base)
2077 return 0;
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2078 upstream_is_gone = 1;
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2079 }
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2080
Jeff King979cb242015-05-22 00:49:11[diff] [blame]2081 base = shorten_unambiguous_ref(full_base, 0);
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2082 if (upstream_is_gone) {
2083 strbuf_addf(sb,
2084 _("Your branch is based on '%s', but the upstream is gone.\n"),
2085 base);
2086 if (advice_status_hints)
2087 strbuf_addf(sb,
2088 _(" (use \"git branch --unset-upstream\" to fixup)\n"));
Jiang Xinf2234592013-08-26 07:02:49[diff] [blame]2089 } else if (!ours && !theirs) {
2090 strbuf_addf(sb,
2091 _("Your branch is up-to-date with '%s'.\n"),
2092 base);
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2093 } else if (!theirs) {
Jiang Xin8a5b7492012-02-02 02:02:23[diff] [blame]2094 strbuf_addf(sb,
2095 Q_("Your branch is ahead of '%s' by %d commit.\n",
2096 "Your branch is ahead of '%s' by %d commits.\n",
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2097 ours),
2098 base, ours);
Jeff King491e3072012-12-03 06:16:57[diff] [blame]2099 if (advice_status_hints)
2100 strbuf_addf(sb,
2101 _(" (use \"git push\" to publish your local commits)\n"));
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2102 } else if (!ours) {
Jiang Xin8a5b7492012-02-02 02:02:23[diff] [blame]2103 strbuf_addf(sb,
2104 Q_("Your branch is behind '%s' by %d commit, "
2105 "and can be fast-forwarded.\n",
2106 "Your branch is behind '%s' by %d commits, "
2107 "and can be fast-forwarded.\n",
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2108 theirs),
2109 base, theirs);
Jeff King491e3072012-12-03 06:16:57[diff] [blame]2110 if (advice_status_hints)
2111 strbuf_addf(sb,
2112 _(" (use \"git pull\" to update your local branch)\n"));
Matthieu Moyc190ced2012-11-15 10:45:00[diff] [blame]2113 } else {
Jiang Xin8a5b7492012-02-02 02:02:23[diff] [blame]2114 strbuf_addf(sb,
2115 Q_("Your branch and '%s' have diverged,\n"
2116 "and have %d and %d different commit each, "
2117 "respectively.\n",
2118 "Your branch and '%s' have diverged,\n"
2119 "and have %d and %d different commits each, "
2120 "respectively.\n",
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2121 theirs),
2122 base, ours, theirs);
Jeff King491e3072012-12-03 06:16:57[diff] [blame]2123 if (advice_status_hints)
2124 strbuf_addf(sb,
2125 _(" (use \"git pull\" to merge the remote branch into yours)\n"));
Matthieu Moyc190ced2012-11-15 10:45:00[diff] [blame]2126 }
Stefan Beller2f50bab2014-08-10 19:43:33[diff] [blame]2127 free(base);
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2128 return 1;
2129}
Jay Soffian454e2022009-02-25 08:32:11[diff] [blame]2130
Michael Haggerty455ade62015-05-25 18:39:01[diff] [blame]2131static int one_local_ref(const char *refname, const struct object_id *oid,
2132 int flag, void *cb_data)
Jay Soffian454e2022009-02-25 08:32:11[diff] [blame]2133{
2134 struct ref ***local_tail = cb_data;
2135 struct ref *ref;
Jay Soffian454e2022009-02-25 08:32:11[diff] [blame]2136
2137 /* we already know it starts with refs/ to get here */
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]2138 if (check_refname_format(refname + 5, 0))
Jay Soffian454e2022009-02-25 08:32:11[diff] [blame]2139 return 0;
2140
Jeff King96ffc062016-02-22 22:44:32[diff] [blame]2141 ref = alloc_ref(refname);
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]2142 oidcpy(&ref->new_oid, oid);
Jay Soffian454e2022009-02-25 08:32:11[diff] [blame]2143 **local_tail = ref;
2144 *local_tail = &ref->next;
2145 return 0;
2146}
2147
2148struct ref *get_local_heads(void)
2149{
Nguyễn Thái Ngọc Duy55f05662009-04-16 22:16:23[diff] [blame]2150 struct ref *local_refs = NULL, **local_tail = &local_refs;
Michael Haggerty2b2a5be2015-05-25 18:38:28[diff] [blame]2151
Jay Soffian454e2022009-02-25 08:32:11[diff] [blame]2152 for_each_ref(one_local_ref, &local_tail);
2153 return local_refs;
2154}
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2155
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2156struct ref *guess_remote_head(const struct ref *head,
2157 const struct ref *refs,
2158 int all)
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2159{
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2160 const struct ref *r;
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2161 struct ref *list = NULL;
2162 struct ref **tail = &list;
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2163
Jay Soffian6cb4e6c2009-02-25 08:32:14[diff] [blame]2164 if (!head)
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2165 return NULL;
2166
Jeff Kingfbb074c2009-02-27 19:10:06[diff] [blame]2167 /*
2168 * Some transports support directly peeking at
2169 * where HEAD points; if that is the case, then
2170 * we don't have to guess.
2171 */
2172 if (head->symref)
2173 return copy_ref(find_ref_by_name(refs, head->symref));
2174
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2175 /* If refs/heads/master could be right, it is. */
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2176 if (!all) {
2177 r = find_ref_by_name(refs, "refs/heads/master");
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]2178 if (r && !oidcmp(&r->old_oid, &head->old_oid))
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2179 return copy_ref(r);
2180 }
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2181
2182 /* Look for another ref that points there */
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2183 for (r = refs; r; r = r->next) {
Jeff King61adfd32011-06-03 05:11:13[diff] [blame]2184 if (r != head &&
Christian Couder59556542013-11-30 20:55:40[diff] [blame]2185 starts_with(r->name, "refs/heads/") &&
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]2186 !oidcmp(&r->old_oid, &head->old_oid)) {
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2187 *tail = copy_ref(r);
2188 tail = &((*tail)->next);
2189 if (!all)
2190 break;
2191 }
2192 }
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2193
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2194 return list;
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2195}
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2196
2197struct stale_heads_info {
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2198 struct string_list *ref_names;
2199 struct ref **stale_refs_tail;
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2200 struct refspec *refs;
2201 int ref_count;
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2202};
2203
Michael Haggerty455ade62015-05-25 18:39:01[diff] [blame]2204static int get_stale_heads_cb(const char *refname, const struct object_id *oid,
2205 int flags, void *cb_data)
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2206{
2207 struct stale_heads_info *info = cb_data;
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2208 struct string_list matches = STRING_LIST_INIT_DUP;
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2209 struct refspec query;
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2210 int i, stale = 1;
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2211 memset(&query, 0, sizeof(struct refspec));
2212 query.dst = (char *)refname;
2213
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2214 query_refspecs_multiple(info->refs, info->ref_count, &query, &matches);
2215 if (matches.nr == 0)
2216 goto clean_exit; /* No matches */
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2217
2218 /*
2219 * If we did find a suitable refspec and it's not a symref and
2220 * it's not in the list of refs that currently exist in that
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2221 * remote, we consider it to be stale. In order to deal with
2222 * overlapping refspecs, we need to go over all of the
2223 * matching refs.
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2224 */
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2225 if (flags & REF_ISSYMREF)
2226 goto clean_exit;
2227
2228 for (i = 0; stale && i < matches.nr; i++)
2229 if (string_list_has_string(info->ref_names, matches.items[i].string))
2230 stale = 0;
2231
2232 if (stale) {
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2233 struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]2234 oidcpy(&ref->new_oid, oid);
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2235 }
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2236
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2237clean_exit:
2238 string_list_clear(&matches, 0);
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2239 return 0;
2240}
2241
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2242struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map)
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2243{
2244 struct ref *ref, *stale_refs = NULL;
Thiago Farina183113a2010-07-04 19:46:19[diff] [blame]2245 struct string_list ref_names = STRING_LIST_INIT_NODUP;
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2246 struct stale_heads_info info;
Michael Haggerty2b2a5be2015-05-25 18:38:28[diff] [blame]2247
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2248 info.ref_names = &ref_names;
2249 info.stale_refs_tail = &stale_refs;
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2250 info.refs = refs;
2251 info.ref_count = ref_count;
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2252 for (ref = fetch_map; ref; ref = ref->next)
Julian Phillips1d2f80f2010-06-25 23:41:38[diff] [blame]2253 string_list_append(&ref_names, ref->name);
Michael Haggerty3383e192014-11-25 08:02:35[diff] [blame]2254 string_list_sort(&ref_names);
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2255 for_each_ref(get_stale_heads_cb, &info);
2256 string_list_clear(&ref_names, 0);
2257 return stale_refs;
2258}
Junio C Hamano28f5d172013-07-08 22:34:36[diff] [blame]2259
2260/*
2261 * Compare-and-swap
2262 */
Junio C Hamanoa355b112015-01-14 22:58:44[diff] [blame]2263static void clear_cas_option(struct push_cas_option *cas)
Junio C Hamano28f5d172013-07-08 22:34:36[diff] [blame]2264{
2265 int i;
2266
2267 for (i = 0; i < cas->nr; i++)
2268 free(cas->entry[i].refname);
2269 free(cas->entry);
2270 memset(cas, 0, sizeof(*cas));
2271}
2272
2273static struct push_cas *add_cas_entry(struct push_cas_option *cas,
2274 const char *refname,
2275 size_t refnamelen)
2276{
2277 struct push_cas *entry;
2278 ALLOC_GROW(cas->entry, cas->nr + 1, cas->alloc);
2279 entry = &cas->entry[cas->nr++];
2280 memset(entry, 0, sizeof(*entry));
2281 entry->refname = xmemdupz(refname, refnamelen);
2282 return entry;
2283}
2284
2285int parse_push_cas_option(struct push_cas_option *cas, const char *arg, int unset)
2286{
2287 const char *colon;
2288 struct push_cas *entry;
2289
2290 if (unset) {
2291 /* "--no-<option>" */
2292 clear_cas_option(cas);
2293 return 0;
2294 }
2295
2296 if (!arg) {
2297 /* just "--<option>" */
2298 cas->use_tracking_for_rest = 1;
2299 return 0;
2300 }
2301
2302 /* "--<option>=refname" or "--<option>=refname:value" */
2303 colon = strchrnul(arg, ':');
2304 entry = add_cas_entry(cas, arg, colon - arg);
2305 if (!*colon)
2306 entry->use_tracking = 1;
2307 else if (get_sha1(colon + 1, entry->expect))
2308 return error("cannot parse expected object name '%s'", colon + 1);
2309 return 0;
2310}
2311
2312int parseopt_push_cas_option(const struct option *opt, const char *arg, int unset)
2313{
2314 return parse_push_cas_option(opt->value, arg, unset);
2315}
Junio C Hamano91048a92013-07-09 18:01:06[diff] [blame]2316
2317int is_empty_cas(const struct push_cas_option *cas)
2318{
2319 return !cas->use_tracking_for_rest && !cas->nr;
2320}
2321
2322/*
2323 * Look at remote.fetch refspec and see if we have a remote
2324 * tracking branch for the refname there. Fill its current
2325 * value in sha1[].
2326 * If we cannot do so, return negative to signal an error.
2327 */
2328static int remote_tracking(struct remote *remote, const char *refname,
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]2329 struct object_id *oid)
Junio C Hamano91048a92013-07-09 18:01:06[diff] [blame]2330{
2331 char *dst;
2332
2333 dst = apply_refspecs(remote->fetch, remote->fetch_refspec_nr, refname);
2334 if (!dst)
2335 return -1; /* no tracking ref for refname at remote */
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]2336 if (read_ref(dst, oid->hash))
Junio C Hamano91048a92013-07-09 18:01:06[diff] [blame]2337 return -1; /* we know what the tracking ref is but we cannot read it */
2338 return 0;
2339}
2340
2341static void apply_cas(struct push_cas_option *cas,
2342 struct remote *remote,
2343 struct ref *ref)
2344{
2345 int i;
2346
2347 /* Find an explicit --<option>=<name>[:<value>] entry */
2348 for (i = 0; i < cas->nr; i++) {
2349 struct push_cas *entry = &cas->entry[i];
Michael Haggerty54457fe2014-01-14 03:16:07[diff] [blame]2350 if (!refname_match(entry->refname, ref->name))
Junio C Hamano91048a92013-07-09 18:01:06[diff] [blame]2351 continue;
2352 ref->expect_old_sha1 = 1;
2353 if (!entry->use_tracking)
brian m. carlsonf4e54d02015-11-10 02:22:20[diff] [blame]2354 hashcpy(ref->old_oid_expect.hash, cas->entry[i].expect);
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]2355 else if (remote_tracking(remote, ref->name, &ref->old_oid_expect))
Junio C Hamano91048a92013-07-09 18:01:06[diff] [blame]2356 ref->expect_old_no_trackback = 1;
2357 return;
2358 }
2359
2360 /* Are we using "--<option>" to cover all? */
2361 if (!cas->use_tracking_for_rest)
2362 return;
2363
2364 ref->expect_old_sha1 = 1;
brian m. carlsonfcd30b12015-11-10 02:22:30[diff] [blame]2365 if (remote_tracking(remote, ref->name, &ref->old_oid_expect))
Junio C Hamano91048a92013-07-09 18:01:06[diff] [blame]2366 ref->expect_old_no_trackback = 1;
2367}
2368
2369void apply_push_cas(struct push_cas_option *cas,
2370 struct remote *remote,
2371 struct ref *remote_refs)
2372{
2373 struct ref *ref;
2374 for (ref = remote_refs; ref; ref = ref->next)
2375 apply_cas(cas, remote, ref);
2376}