Support mandatory capabilities
[git/git.git] / transport.c
CommitLineData
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1#include "cache.h"
2#include "transport.h"
3#include "run-command.h"
c29727d5
DB
4#include "pkt-line.h"
5#include "fetch-pack.h"
40cb4fab 6#include "send-pack.h"
c29727d5 7#include "walker.h"
c7a8a162 8#include "bundle.h"
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9#include "dir.h"
10#include "refs.h"
11
12/* rsync support */
13
14/*
15 * We copy packed-refs and refs/ into a temporary file, then read the
16 * loose refs recursively (sorting whenever possible), and then inserting
17 * those packed refs that are not yet in the list (not validating, but
18 * assuming that the file is sorted).
19 *
20 * Appears refactoring this from refs.c is too cumbersome.
21 */
22
23static int str_cmp(const void *a, const void *b)
24{
25 const char *s1 = a;
26 const char *s2 = b;
27
28 return strcmp(s1, s2);
29}
30
31/* path->buf + name_offset is expected to point to "refs/" */
32
33static int read_loose_refs(struct strbuf *path, int name_offset,
34 struct ref **tail)
35{
36 DIR *dir = opendir(path->buf);
37 struct dirent *de;
38 struct {
39 char **entries;
40 int nr, alloc;
41 } list;
42 int i, pathlen;
43
44 if (!dir)
45 return -1;
46
47 memset (&list, 0, sizeof(list));
48
49 while ((de = readdir(dir))) {
8ca12c0d 50 if (is_dot_or_dotdot(de->d_name))
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51 continue;
52 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
53 list.entries[list.nr++] = xstrdup(de->d_name);
54 }
55 closedir(dir);
56
57 /* sort the list */
58
59 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
60
61 pathlen = path->len;
62 strbuf_addch(path, '/');
63
64 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
65 strbuf_addstr(path, list.entries[i]);
66 if (read_loose_refs(path, name_offset, tail)) {
67 int fd = open(path->buf, O_RDONLY);
68 char buffer[40];
69 struct ref *next;
70
71 if (fd < 0)
72 continue;
59c69c0c 73 next = alloc_ref(path->buf + name_offset);
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74 if (read_in_full(fd, buffer, 40) != 40 ||
75 get_sha1_hex(buffer, next->old_sha1)) {
76 close(fd);
77 free(next);
78 continue;
79 }
80 close(fd);
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81 (*tail)->next = next;
82 *tail = next;
83 }
84 }
85 strbuf_setlen(path, pathlen);
86
87 for (i = 0; i < list.nr; i++)
88 free(list.entries[i]);
89 free(list.entries);
90
91 return 0;
92}
93
94/* insert the packed refs for which no loose refs were found */
95
96static void insert_packed_refs(const char *packed_refs, struct ref **list)
97{
98 FILE *f = fopen(packed_refs, "r");
99 static char buffer[PATH_MAX];
100
101 if (!f)
102 return;
103
104 for (;;) {
47ec7943 105 int cmp = cmp, len;
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106
107 if (!fgets(buffer, sizeof(buffer), f)) {
108 fclose(f);
109 return;
110 }
111
112 if (hexval(buffer[0]) > 0xf)
113 continue;
114 len = strlen(buffer);
872c930d 115 if (len && buffer[len - 1] == '\n')
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116 buffer[--len] = '\0';
117 if (len < 41)
118 continue;
119 while ((*list)->next &&
120 (cmp = strcmp(buffer + 41,
121 (*list)->next->name)) > 0)
122 list = &(*list)->next;
123 if (!(*list)->next || cmp < 0) {
59c69c0c 124 struct ref *next = alloc_ref(buffer + 41);
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125 buffer[40] = '\0';
126 if (get_sha1_hex(buffer, next->old_sha1)) {
127 warning ("invalid SHA-1: %s", buffer);
128 free(next);
129 continue;
130 }
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131 next->next = (*list)->next;
132 (*list)->next = next;
133 list = &(*list)->next;
134 }
135 }
136}
137
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138static const char *rsync_url(const char *url)
139{
140 return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
141}
142
64fcef2d 143static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
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144{
145 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
146 struct ref dummy, *tail = &dummy;
147 struct child_process rsync;
148 const char *args[5];
149 int temp_dir_len;
150
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DB
151 if (for_push)
152 return NULL;
153
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154 /* copy the refs to the temporary directory */
155
156 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
157 if (!mkdtemp(temp_dir.buf))
0721c314 158 die_errno ("Could not make temporary directory");
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159 temp_dir_len = temp_dir.len;
160
7efaeba2 161 strbuf_addstr(&buf, rsync_url(transport->url));
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162 strbuf_addstr(&buf, "/refs");
163
164 memset(&rsync, 0, sizeof(rsync));
165 rsync.argv = args;
166 rsync.stdout_to_stderr = 1;
167 args[0] = "rsync";
2b5a06ed 168 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
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169 args[2] = buf.buf;
170 args[3] = temp_dir.buf;
171 args[4] = NULL;
172
173 if (run_command(&rsync))
174 die ("Could not run rsync to get refs");
175
176 strbuf_reset(&buf);
7efaeba2 177 strbuf_addstr(&buf, rsync_url(transport->url));
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178 strbuf_addstr(&buf, "/packed-refs");
179
180 args[2] = buf.buf;
181
182 if (run_command(&rsync))
183 die ("Could not run rsync to get refs");
184
185 /* read the copied refs */
186
187 strbuf_addstr(&temp_dir, "/refs");
188 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
189 strbuf_setlen(&temp_dir, temp_dir_len);
190
191 tail = &dummy;
192 strbuf_addstr(&temp_dir, "/packed-refs");
193 insert_packed_refs(temp_dir.buf, &tail);
194 strbuf_setlen(&temp_dir, temp_dir_len);
195
196 if (remove_dir_recursively(&temp_dir, 0))
197 warning ("Error removing temporary directory %s.",
198 temp_dir.buf);
199
200 strbuf_release(&buf);
201 strbuf_release(&temp_dir);
202
203 return dummy.next;
204}
205
206static int fetch_objs_via_rsync(struct transport *transport,
37148311 207 int nr_objs, struct ref **to_fetch)
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208{
209 struct strbuf buf = STRBUF_INIT;
210 struct child_process rsync;
211 const char *args[8];
212 int result;
213
7efaeba2 214 strbuf_addstr(&buf, rsync_url(transport->url));
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215 strbuf_addstr(&buf, "/objects/");
216
217 memset(&rsync, 0, sizeof(rsync));
218 rsync.argv = args;
219 rsync.stdout_to_stderr = 1;
220 args[0] = "rsync";
2b5a06ed 221 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
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222 args[2] = "--ignore-existing";
223 args[3] = "--exclude";
224 args[4] = "info";
225 args[5] = buf.buf;
226 args[6] = get_object_directory();
227 args[7] = NULL;
228
229 /* NEEDSWORK: handle one level of alternates */
230 result = run_command(&rsync);
231
232 strbuf_release(&buf);
233
234 return result;
235}
236
237static int write_one_ref(const char *name, const unsigned char *sha1,
238 int flags, void *data)
239{
240 struct strbuf *buf = data;
241 int len = buf->len;
242 FILE *f;
243
244 /* when called via for_each_ref(), flags is non-zero */
245 if (flags && prefixcmp(name, "refs/heads/") &&
246 prefixcmp(name, "refs/tags/"))
247 return 0;
248
249 strbuf_addstr(buf, name);
250 if (safe_create_leading_directories(buf->buf) ||
251 !(f = fopen(buf->buf, "w")) ||
252 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
253 fclose(f))
254 return error("problems writing temporary file %s", buf->buf);
255 strbuf_setlen(buf, len);
256 return 0;
257}
258
259static int write_refs_to_temp_dir(struct strbuf *temp_dir,
260 int refspec_nr, const char **refspec)
261{
262 int i;
263
264 for (i = 0; i < refspec_nr; i++) {
265 unsigned char sha1[20];
266 char *ref;
267
268 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
269 return error("Could not get ref %s", refspec[i]);
270
271 if (write_one_ref(ref, sha1, 0, temp_dir)) {
272 free(ref);
273 return -1;
274 }
275 free(ref);
276 }
277 return 0;
278}
279
280static int rsync_transport_push(struct transport *transport,
281 int refspec_nr, const char **refspec, int flags)
282{
283 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
284 int result = 0, i;
285 struct child_process rsync;
ee020f35 286 const char *args[10];
cd547b48 287
94c89ba6
AW
288 if (flags & TRANSPORT_PUSH_MIRROR)
289 return error("rsync transport does not support mirror mode");
290
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291 /* first push the objects */
292
7efaeba2 293 strbuf_addstr(&buf, rsync_url(transport->url));
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294 strbuf_addch(&buf, '/');
295
296 memset(&rsync, 0, sizeof(rsync));
297 rsync.argv = args;
298 rsync.stdout_to_stderr = 1;
ee020f35
SP
299 i = 0;
300 args[i++] = "rsync";
301 args[i++] = "-a";
302 if (flags & TRANSPORT_PUSH_DRY_RUN)
303 args[i++] = "--dry-run";
304 if (transport->verbose > 0)
305 args[i++] = "-v";
306 args[i++] = "--ignore-existing";
307 args[i++] = "--exclude";
308 args[i++] = "info";
309 args[i++] = get_object_directory();
310 args[i++] = buf.buf;
311 args[i++] = NULL;
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312
313 if (run_command(&rsync))
7efaeba2
JS
314 return error("Could not push objects to %s",
315 rsync_url(transport->url));
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316
317 /* copy the refs to the temporary directory; they could be packed. */
318
319 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
320 if (!mkdtemp(temp_dir.buf))
0721c314 321 die_errno ("Could not make temporary directory");
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322 strbuf_addch(&temp_dir, '/');
323
324 if (flags & TRANSPORT_PUSH_ALL) {
325 if (for_each_ref(write_one_ref, &temp_dir))
326 return -1;
327 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
328 return -1;
329
ee020f35
SP
330 i = 2;
331 if (flags & TRANSPORT_PUSH_DRY_RUN)
332 args[i++] = "--dry-run";
333 if (!(flags & TRANSPORT_PUSH_FORCE))
334 args[i++] = "--ignore-existing";
cd547b48 335 args[i++] = temp_dir.buf;
7efaeba2 336 args[i++] = rsync_url(transport->url);
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337 args[i++] = NULL;
338 if (run_command(&rsync))
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JS
339 result = error("Could not push to %s",
340 rsync_url(transport->url));
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341
342 if (remove_dir_recursively(&temp_dir, 0))
343 warning ("Could not remove temporary directory %s.",
344 temp_dir.buf);
345
346 strbuf_release(&buf);
347 strbuf_release(&temp_dir);
348
349 return result;
350}
c29727d5 351
c7a8a162
JS
352struct bundle_transport_data {
353 int fd;
354 struct bundle_header header;
355};
356
64fcef2d 357static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
c7a8a162
JS
358{
359 struct bundle_transport_data *data = transport->data;
360 struct ref *result = NULL;
361 int i;
362
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DB
363 if (for_push)
364 return NULL;
365
c7a8a162
JS
366 if (data->fd > 0)
367 close(data->fd);
368 data->fd = read_bundle_header(transport->url, &data->header);
369 if (data->fd < 0)
370 die ("Could not read bundle '%s'.", transport->url);
371 for (i = 0; i < data->header.references.nr; i++) {
372 struct ref_list_entry *e = data->header.references.list + i;
59c69c0c 373 struct ref *ref = alloc_ref(e->name);
c7a8a162 374 hashcpy(ref->old_sha1, e->sha1);
c7a8a162
JS
375 ref->next = result;
376 result = ref;
377 }
378 return result;
379}
380
1788c39c 381static int fetch_refs_from_bundle(struct transport *transport,
37148311 382 int nr_heads, struct ref **to_fetch)
c7a8a162
JS
383{
384 struct bundle_transport_data *data = transport->data;
385 return unbundle(&data->header, data->fd);
386}
387
388static int close_bundle(struct transport *transport)
389{
390 struct bundle_transport_data *data = transport->data;
391 if (data->fd > 0)
392 close(data->fd);
f4e95765 393 free(data);
c7a8a162
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394 return 0;
395}
396
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DB
397struct git_transport_data {
398 unsigned thin : 1;
c29727d5 399 unsigned keep : 1;
41fa7d2e 400 unsigned followtags : 1;
c29727d5 401 int depth;
ba227857
DB
402 struct child_process *conn;
403 int fd[2];
c29727d5 404 const char *uploadpack;
9b288516 405 const char *receivepack;
64fcef2d 406 struct extra_have_objects extra_have;
9b288516
DB
407};
408
409static int set_git_option(struct transport *connection,
410 const char *name, const char *value)
411{
412 struct git_transport_data *data = connection->data;
c29727d5
DB
413 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
414 data->uploadpack = value;
415 return 0;
416 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
9b288516
DB
417 data->receivepack = value;
418 return 0;
419 } else if (!strcmp(name, TRANS_OPT_THIN)) {
420 data->thin = !!value;
421 return 0;
41fa7d2e
SP
422 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
423 data->followtags = !!value;
424 return 0;
c29727d5
DB
425 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
426 data->keep = !!value;
427 return 0;
c29727d5
DB
428 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
429 if (!value)
430 data->depth = 0;
431 else
432 data->depth = atoi(value);
433 return 0;
9b288516
DB
434 }
435 return 1;
436}
437
64fcef2d 438static int connect_setup(struct transport *transport, int for_push, int verbose)
ba227857
DB
439{
440 struct git_transport_data *data = transport->data;
64fcef2d
DB
441 data->conn = git_connect(data->fd, transport->url,
442 for_push ? data->receivepack : data->uploadpack,
443 verbose ? CONNECT_VERBOSE : 0);
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DB
444 return 0;
445}
446
64fcef2d 447static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
c29727d5
DB
448{
449 struct git_transport_data *data = transport->data;
450 struct ref *refs;
c29727d5 451
64fcef2d
DB
452 connect_setup(transport, for_push, 0);
453 get_remote_heads(data->fd[0], &refs, 0, NULL,
454 for_push ? REF_NORMAL : 0, &data->extra_have);
c29727d5
DB
455
456 return refs;
457}
458
1788c39c 459static int fetch_refs_via_pack(struct transport *transport,
37148311 460 int nr_heads, struct ref **to_fetch)
c29727d5
DB
461{
462 struct git_transport_data *data = transport->data;
425b1393 463 char **heads = xmalloc(nr_heads * sizeof(*heads));
e4cd6c7a 464 char **origh = xmalloc(nr_heads * sizeof(*origh));
ba227857 465 const struct ref *refs;
c29727d5
DB
466 char *dest = xstrdup(transport->url);
467 struct fetch_pack_args args;
425b1393 468 int i;
00183cbb 469 struct ref *refs_tmp = NULL;
c29727d5 470
fa740529 471 memset(&args, 0, sizeof(args));
c29727d5 472 args.uploadpack = data->uploadpack;
c29727d5 473 args.keep_pack = data->keep;
fa740529 474 args.lock_pack = 1;
c29727d5 475 args.use_thin_pack = data->thin;
41fa7d2e 476 args.include_tag = data->followtags;
9b373229 477 args.verbose = (transport->verbose > 0);
fe8aa148 478 args.quiet = (transport->verbose < 0);
21188b1e 479 args.no_progress = args.quiet || (!transport->progress && !isatty(1));
c29727d5 480 args.depth = data->depth;
c29727d5 481
425b1393 482 for (i = 0; i < nr_heads; i++)
e4cd6c7a 483 origh[i] = heads[i] = xstrdup(to_fetch[i]->name);
ba227857 484
ba227857 485 if (!data->conn) {
64fcef2d 486 connect_setup(transport, 0, 0);
40c155ff 487 get_remote_heads(data->fd[0], &refs_tmp, 0, NULL, 0, NULL);
ba227857
DB
488 }
489
00183cbb
DB
490 refs = fetch_pack(&args, data->fd, data->conn,
491 refs_tmp ? refs_tmp : transport->remote_refs,
ba227857
DB
492 dest, nr_heads, heads, &transport->pack_lockfile);
493 close(data->fd[0]);
494 close(data->fd[1]);
495 if (finish_connect(data->conn))
496 refs = NULL;
497 data->conn = NULL;
c29727d5 498
00183cbb
DB
499 free_refs(refs_tmp);
500
425b1393 501 for (i = 0; i < nr_heads; i++)
e4cd6c7a
SP
502 free(origh[i]);
503 free(origh);
504 free(heads);
c29727d5 505 free(dest);
c6bc4005 506 return (refs ? 0 : -1);
c29727d5
DB
507}
508
481c7a6d
JK
509static int push_had_errors(struct ref *ref)
510{
511 for (; ref; ref = ref->next) {
512 switch (ref->status) {
513 case REF_STATUS_NONE:
514 case REF_STATUS_UPTODATE:
515 case REF_STATUS_OK:
516 break;
517 default:
518 return 1;
519 }
520 }
521 return 0;
522}
523
64fcef2d
DB
524static int refs_pushed(struct ref *ref)
525{
526 for (; ref; ref = ref->next) {
527 switch(ref->status) {
528 case REF_STATUS_NONE:
529 case REF_STATUS_UPTODATE:
530 break;
531 default:
532 return 1;
533 }
534 }
535 return 0;
536}
537
538static void update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
539{
540 struct refspec rs;
541
542 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
543 return;
544
545 rs.src = ref->name;
546 rs.dst = NULL;
547
548 if (!remote_find_tracking(remote, &rs)) {
549 if (verbose)
550 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
551 if (ref->deletion) {
552 delete_ref(rs.dst, NULL, 0);
553 } else
554 update_ref("update by push", rs.dst,
555 ref->new_sha1, NULL, 0, 0);
556 free(rs.dst);
557 }
558}
559
560#define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
561
1965ff74 562static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
64fcef2d 563{
1965ff74
LA
564 if (porcelain) {
565 if (from)
566 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
567 else
568 fprintf(stdout, "%c\t:%s\t", flag, to->name);
569 if (msg)
570 fprintf(stdout, "%s (%s)\n", summary, msg);
571 else
572 fprintf(stdout, "%s\n", summary);
573 } else {
574 fprintf(stderr, " %c %-*s ", flag, SUMMARY_WIDTH, summary);
575 if (from)
576 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
577 else
578 fputs(prettify_refname(to->name), stderr);
579 if (msg) {
580 fputs(" (", stderr);
581 fputs(msg, stderr);
582 fputc(')', stderr);
583 }
584 fputc('\n', stderr);
64fcef2d 585 }
64fcef2d
DB
586}
587
588static const char *status_abbrev(unsigned char sha1[20])
589{
590 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
591}
592
1965ff74 593static void print_ok_ref_status(struct ref *ref, int porcelain)
64fcef2d
DB
594{
595 if (ref->deletion)
1965ff74 596 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
64fcef2d
DB
597 else if (is_null_sha1(ref->old_sha1))
598 print_ref_status('*',
599 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
1965ff74
LA
600 "[new branch]"),
601 ref, ref->peer_ref, NULL, porcelain);
64fcef2d
DB
602 else {
603 char quickref[84];
604 char type;
605 const char *msg;
606
607 strcpy(quickref, status_abbrev(ref->old_sha1));
608 if (ref->nonfastforward) {
609 strcat(quickref, "...");
610 type = '+';
611 msg = "forced update";
612 } else {
613 strcat(quickref, "..");
614 type = ' ';
615 msg = NULL;
616 }
617 strcat(quickref, status_abbrev(ref->new_sha1));
618
1965ff74 619 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
64fcef2d
DB
620 }
621}
622
1965ff74 623static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
64fcef2d
DB
624{
625 if (!count)
626 fprintf(stderr, "To %s\n", dest);
627
628 switch(ref->status) {
629 case REF_STATUS_NONE:
1965ff74 630 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
64fcef2d
DB
631 break;
632 case REF_STATUS_REJECT_NODELETE:
633 print_ref_status('!', "[rejected]", ref, NULL,
1965ff74 634 "remote does not support deleting refs", porcelain);
64fcef2d
DB
635 break;
636 case REF_STATUS_UPTODATE:
637 print_ref_status('=', "[up to date]", ref,
1965ff74 638 ref->peer_ref, NULL, porcelain);
64fcef2d
DB
639 break;
640 case REF_STATUS_REJECT_NONFASTFORWARD:
641 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
a75d7b54 642 "non-fast-forward", porcelain);
64fcef2d
DB
643 break;
644 case REF_STATUS_REMOTE_REJECT:
645 print_ref_status('!', "[remote rejected]", ref,
1965ff74
LA
646 ref->deletion ? NULL : ref->peer_ref,
647 ref->remote_status, porcelain);
64fcef2d
DB
648 break;
649 case REF_STATUS_EXPECTING_REPORT:
650 print_ref_status('!', "[remote failure]", ref,
1965ff74
LA
651 ref->deletion ? NULL : ref->peer_ref,
652 "remote failed to report status", porcelain);
64fcef2d
DB
653 break;
654 case REF_STATUS_OK:
1965ff74 655 print_ok_ref_status(ref, porcelain);
64fcef2d
DB
656 break;
657 }
658
659 return 1;
660}
661
1965ff74 662static void print_push_status(const char *dest, struct ref *refs,
07436e43 663 int verbose, int porcelain, int * nonfastforward)
64fcef2d
DB
664{
665 struct ref *ref;
666 int n = 0;
667
668 if (verbose) {
669 for (ref = refs; ref; ref = ref->next)
670 if (ref->status == REF_STATUS_UPTODATE)
1965ff74 671 n += print_one_push_status(ref, dest, n, porcelain);
64fcef2d
DB
672 }
673
674 for (ref = refs; ref; ref = ref->next)
675 if (ref->status == REF_STATUS_OK)
1965ff74 676 n += print_one_push_status(ref, dest, n, porcelain);
64fcef2d 677
07436e43 678 *nonfastforward = 0;
64fcef2d
DB
679 for (ref = refs; ref; ref = ref->next) {
680 if (ref->status != REF_STATUS_NONE &&
681 ref->status != REF_STATUS_UPTODATE &&
682 ref->status != REF_STATUS_OK)
1965ff74 683 n += print_one_push_status(ref, dest, n, porcelain);
07436e43
MM
684 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD)
685 *nonfastforward = 1;
64fcef2d
DB
686 }
687}
688
689static void verify_remote_names(int nr_heads, const char **heads)
690{
691 int i;
692
693 for (i = 0; i < nr_heads; i++) {
694 const char *local = heads[i];
695 const char *remote = strrchr(heads[i], ':');
696
697 if (*local == '+')
698 local++;
699
700 /* A matching refspec is okay. */
701 if (remote == local && remote[1] == '\0')
702 continue;
703
704 remote = remote ? (remote + 1) : local;
705 switch (check_ref_format(remote)) {
706 case 0: /* ok */
707 case CHECK_REF_FORMAT_ONELEVEL:
708 /* ok but a single level -- that is fine for
709 * a match pattern.
710 */
711 case CHECK_REF_FORMAT_WILDCARD:
712 /* ok but ends with a pattern-match character */
713 continue;
714 }
715 die("remote part of refspec is not a valid name in %s",
716 heads[i]);
717 }
718}
719
720static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
f3fa1838 721{
9b288516 722 struct git_transport_data *data = transport->data;
40cb4fab 723 struct send_pack_args args;
64fcef2d
DB
724 int ret;
725
726 if (!data->conn) {
727 struct ref *tmp_refs;
728 connect_setup(transport, 1, 0);
729
730 get_remote_heads(data->fd[0], &tmp_refs, 0, NULL, REF_NORMAL,
731 NULL);
732 }
9b288516 733
de1a2fdd 734 memset(&args, 0, sizeof(args));
94c89ba6 735 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
40cb4fab
DB
736 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
737 args.use_thin_pack = data->thin;
a108e538 738 args.verbose = !!(flags & TRANSPORT_PUSH_VERBOSE);
12070329 739 args.quiet = !!(flags & TRANSPORT_PUSH_QUIET);
40cb4fab
DB
740 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
741
64fcef2d
DB
742 ret = send_pack(&args, data->fd, data->conn, remote_refs,
743 &data->extra_have);
744
745 close(data->fd[1]);
746 close(data->fd[0]);
747 ret |= finish_connect(data->conn);
748 data->conn = NULL;
749
750 return ret;
9b288516
DB
751}
752
f4e95765
SP
753static int disconnect_git(struct transport *transport)
754{
ba227857
DB
755 struct git_transport_data *data = transport->data;
756 if (data->conn) {
757 packet_flush(data->fd[1]);
758 close(data->fd[0]);
759 close(data->fd[1]);
760 finish_connect(data->conn);
761 }
762
763 free(data);
f4e95765
SP
764 return 0;
765}
766
9b288516
DB
767static int is_local(const char *url)
768{
769 const char *colon = strchr(url, ':');
770 const char *slash = strchr(url, '/');
be501813
JS
771 return !colon || (slash && slash < colon) ||
772 has_dos_drive_prefix(url);
9b288516
DB
773}
774
775static int is_file(const char *url)
776{
777 struct stat buf;
778 if (stat(url, &buf))
779 return 0;
780 return S_ISREG(buf.st_mode);
781}
782
e5f4e214 783struct transport *transport_get(struct remote *remote, const char *url)
9b288516 784{
8eb554ae
SP
785 struct transport *ret = xcalloc(1, sizeof(*ret));
786
c1d45cf7
DB
787 if (!remote)
788 die("No remote provided to transport_get()");
789
8eb554ae 790 ret->remote = remote;
fb0cc87e
DB
791
792 if (!url && remote && remote->url)
793 url = remote->url[0];
8eb554ae 794 ret->url = url;
8eb554ae 795
87422439
JS
796 /* maybe it is a foreign URL? */
797 if (url) {
798 const char *p = url;
799
800 while (isalnum(*p))
801 p++;
802 if (!prefixcmp(p, "::"))
803 remote->foreign_vcs = xstrndup(url, p - url);
804 }
805
c578f51d
DB
806 if (remote && remote->foreign_vcs) {
807 transport_helper_init(ret, remote->foreign_vcs);
808 return ret;
809 }
810
7efaeba2 811 if (!prefixcmp(url, "rsync:")) {
cd547b48
JS
812 ret->get_refs_list = get_refs_via_rsync;
813 ret->fetch = fetch_objs_via_rsync;
814 ret->push = rsync_transport_push;
824d5776 815
8eb554ae
SP
816 } else if (!prefixcmp(url, "http://")
817 || !prefixcmp(url, "https://")
818 || !prefixcmp(url, "ftp://")) {
c9e388bb 819 transport_helper_init(ret, "curl");
ccfc02a3
JS
820#ifdef NO_CURL
821 error("git was compiled without libcurl support.");
ccfc02a3 822#endif
824d5776 823
9b288516 824 } else if (is_local(url) && is_file(url)) {
c7a8a162 825 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
c7a8a162 826 ret->data = data;
824d5776
SP
827 ret->get_refs_list = get_refs_from_bundle;
828 ret->fetch = fetch_refs_from_bundle;
829 ret->disconnect = close_bundle;
830
9b288516
DB
831 } else {
832 struct git_transport_data *data = xcalloc(1, sizeof(*data));
9b288516 833 ret->data = data;
824d5776
SP
834 ret->set_option = set_git_option;
835 ret->get_refs_list = get_refs_via_connect;
836 ret->fetch = fetch_refs_via_pack;
64fcef2d 837 ret->push_refs = git_transport_push;
f4e95765 838 ret->disconnect = disconnect_git;
824d5776 839
9b288516 840 data->thin = 1;
ba227857 841 data->conn = NULL;
c29727d5 842 data->uploadpack = "git-upload-pack";
c1d45cf7 843 if (remote->uploadpack)
c29727d5 844 data->uploadpack = remote->uploadpack;
9b288516 845 data->receivepack = "git-receive-pack";
c1d45cf7 846 if (remote->receivepack)
9b288516 847 data->receivepack = remote->receivepack;
9b288516 848 }
8eb554ae 849
9b288516
DB
850 return ret;
851}
852
853int transport_set_option(struct transport *transport,
854 const char *name, const char *value)
855{
824d5776
SP
856 if (transport->set_option)
857 return transport->set_option(transport, name, value);
ab865e6e 858 return 1;
9b288516
DB
859}
860
861int transport_push(struct transport *transport,
07436e43 862 int refspec_nr, const char **refspec, int flags,
bb8cccd0 863 int *nonfastforward)
9b288516 864{
bb8cccd0 865 *nonfastforward = 0;
64fcef2d
DB
866 verify_remote_names(refspec_nr, refspec);
867
868 if (transport->push)
869 return transport->push(transport, refspec_nr, refspec, flags);
870 if (transport->push_refs) {
871 struct ref *remote_refs =
872 transport->get_refs_list(transport, 1);
64fcef2d
DB
873 struct ref *local_refs = get_local_heads();
874 int match_flags = MATCH_REFS_NONE;
875 int verbose = flags & TRANSPORT_PUSH_VERBOSE;
481c7a6d 876 int quiet = flags & TRANSPORT_PUSH_QUIET;
1965ff74 877 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
64fcef2d
DB
878 int ret;
879
880 if (flags & TRANSPORT_PUSH_ALL)
881 match_flags |= MATCH_REFS_ALL;
882 if (flags & TRANSPORT_PUSH_MIRROR)
883 match_flags |= MATCH_REFS_MIRROR;
884
6d2bf96e 885 if (match_refs(local_refs, &remote_refs,
64fcef2d
DB
886 refspec_nr, refspec, match_flags)) {
887 return -1;
888 }
889
890 ret = transport->push_refs(transport, remote_refs, flags);
891
481c7a6d
JK
892 if (!quiet || push_had_errors(remote_refs))
893 print_push_status(transport->url, remote_refs,
6ffd7812
JH
894 verbose | porcelain, porcelain,
895 nonfastforward);
64fcef2d
DB
896
897 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
898 struct ref *ref;
899 for (ref = remote_refs; ref; ref = ref->next)
900 update_tracking_ref(transport->remote, ref, verbose);
901 }
902
2e5ed5f2 903 if (!quiet && !ret && !refs_pushed(remote_refs))
64fcef2d
DB
904 fprintf(stderr, "Everything up-to-date\n");
905 return ret;
906 }
907 return 1;
9b288516
DB
908}
909
4577370e 910const struct ref *transport_get_remote_refs(struct transport *transport)
c29727d5
DB
911{
912 if (!transport->remote_refs)
64fcef2d 913 transport->remote_refs = transport->get_refs_list(transport, 0);
c29727d5
DB
914 return transport->remote_refs;
915}
916
37148311 917int transport_fetch_refs(struct transport *transport, struct ref *refs)
c29727d5 918{
425b1393 919 int rc;
86386829 920 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
37148311
DB
921 struct ref **heads = NULL;
922 struct ref *rm;
c29727d5
DB
923
924 for (rm = refs; rm; rm = rm->next) {
86386829 925 nr_refs++;
c29727d5 926 if (rm->peer_ref &&
37148311 927 !is_null_sha1(rm->old_sha1) &&
c29727d5
DB
928 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
929 continue;
7a2bff45 930 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
425b1393 931 heads[nr_heads++] = rm;
c29727d5
DB
932 }
933
86386829
NP
934 if (!nr_heads) {
935 /*
936 * When deepening of a shallow repository is requested,
937 * then local and remote refs are likely to still be equal.
938 * Just feed them all to the fetch method in that case.
939 * This condition shouldn't be met in a non-deepening fetch
940 * (see builtin-fetch.c:quickfetch()).
941 */
942 heads = xmalloc(nr_refs * sizeof(*heads));
943 for (rm = refs; rm; rm = rm->next)
944 heads[nr_heads++] = rm;
945 }
946
824d5776 947 rc = transport->fetch(transport, nr_heads, heads);
c29727d5 948 free(heads);
425b1393 949 return rc;
c29727d5
DB
950}
951
1788c39c
SP
952void transport_unlock_pack(struct transport *transport)
953{
954 if (transport->pack_lockfile) {
691f1a28 955 unlink_or_warn(transport->pack_lockfile);
1788c39c
SP
956 free(transport->pack_lockfile);
957 transport->pack_lockfile = NULL;
958 }
959}
960
9b288516
DB
961int transport_disconnect(struct transport *transport)
962{
963 int ret = 0;
824d5776
SP
964 if (transport->disconnect)
965 ret = transport->disconnect(transport);
9b288516
DB
966 free(transport);
967 return ret;
968}
47abd85b
AE
969
970/*
971 * Strip username (and password) from an url and return
972 * it in a newly allocated string.
973 */
974char *transport_anonymize_url(const char *url)
975{
976 char *anon_url, *scheme_prefix, *anon_part;
977 size_t anon_len, prefix_len = 0;
978
979 anon_part = strchr(url, '@');
980 if (is_local(url) || !anon_part)
981 goto literal_copy;
982
983 anon_len = strlen(++anon_part);
984 scheme_prefix = strstr(url, "://");
985 if (!scheme_prefix) {
986 if (!strchr(anon_part, ':'))
987 /* cannot be "me@there:/path/name" */
988 goto literal_copy;
989 } else {
990 const char *cp;
991 /* make sure scheme is reasonable */
992 for (cp = url; cp < scheme_prefix; cp++) {
993 switch (*cp) {
994 /* RFC 1738 2.1 */
995 case '+': case '.': case '-':
996 break; /* ok */
997 default:
998 if (isalnum(*cp))
999 break;
1000 /* it isn't */
1001 goto literal_copy;
1002 }
1003 }
1004 /* @ past the first slash does not count */
1005 cp = strchr(scheme_prefix + 3, '/');
1006 if (cp && cp < anon_part)
1007 goto literal_copy;
1008 prefix_len = scheme_prefix - url + 3;
1009 }
1010 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1011 memcpy(anon_url, url, prefix_len);
1012 memcpy(anon_url + prefix_len, anon_part, anon_len);
1013 return anon_url;
1014literal_copy:
1015 return xstrdup(url);
1016}