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shallow.c: extend setup_*_shallow() to accept extra shallow commits
[git/gitweb.git] / transport.c
blob90453df9c6ffc08b39a49002e31468d4ff6f5b3d
1 #include "cache.h"
2 #include "transport.h"
3 #include "run-command.h"
4 #include "pkt-line.h"
5 #include "fetch-pack.h"
6 #include "remote.h"
7 #include "connect.h"
8 #include "send-pack.h"
9 #include "walker.h"
10 #include "bundle.h"
11 #include "dir.h"
12 #include "refs.h"
13 #include "branch.h"
14 #include "url.h"
15 #include "submodule.h"
16 #include "string-list.h"
17 #include "sha1-array.h"
18
19 /* rsync support */
20
21 /*
22 * We copy packed-refs and refs/ into a temporary file, then read the
23 * loose refs recursively (sorting whenever possible), and then inserting
24 * those packed refs that are not yet in the list (not validating, but
25 * assuming that the file is sorted).
26 *
27 * Appears refactoring this from refs.c is too cumbersome.
28 */
29
30 static int str_cmp(const void *a, const void *b)
31 {
32 const char *s1 = a;
33 const char *s2 = b;
34
35 return strcmp(s1, s2);
36 }
37
38 /* path->buf + name_offset is expected to point to "refs/" */
39
40 static int read_loose_refs(struct strbuf *path, int name_offset,
41 struct ref **tail)
42 {
43 DIR *dir = opendir(path->buf);
44 struct dirent *de;
45 struct {
46 char **entries;
47 int nr, alloc;
48 } list;
49 int i, pathlen;
50
51 if (!dir)
52 return -1;
53
54 memset (&list, 0, sizeof(list));
55
56 while ((de = readdir(dir))) {
57 if (is_dot_or_dotdot(de->d_name))
58 continue;
59 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
60 list.entries[list.nr++] = xstrdup(de->d_name);
61 }
62 closedir(dir);
63
64 /* sort the list */
65
66 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
67
68 pathlen = path->len;
69 strbuf_addch(path, '/');
70
71 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
72 strbuf_addstr(path, list.entries[i]);
73 if (read_loose_refs(path, name_offset, tail)) {
74 int fd = open(path->buf, O_RDONLY);
75 char buffer[40];
76 struct ref *next;
77
78 if (fd < 0)
79 continue;
80 next = alloc_ref(path->buf + name_offset);
81 if (read_in_full(fd, buffer, 40) != 40 ||
82 get_sha1_hex(buffer, next->old_sha1)) {
83 close(fd);
84 free(next);
85 continue;
86 }
87 close(fd);
88 (*tail)->next = next;
89 *tail = next;
90 }
91 }
92 strbuf_setlen(path, pathlen);
93
94 for (i = 0; i < list.nr; i++)
95 free(list.entries[i]);
96 free(list.entries);
97
98 return 0;
99 }
100
101 /* insert the packed refs for which no loose refs were found */
102
103 static void insert_packed_refs(const char *packed_refs, struct ref **list)
104 {
105 FILE *f = fopen(packed_refs, "r");
106 static char buffer[PATH_MAX];
107
108 if (!f)
109 return;
110
111 for (;;) {
112 int cmp = 0; /* assigned before used */
113 int len;
114
115 if (!fgets(buffer, sizeof(buffer), f)) {
116 fclose(f);
117 return;
118 }
119
120 if (hexval(buffer[0]) > 0xf)
121 continue;
122 len = strlen(buffer);
123 if (len && buffer[len - 1] == '\n')
124 buffer[--len] = '\0';
125 if (len < 41)
126 continue;
127 while ((*list)->next &&
128 (cmp = strcmp(buffer + 41,
129 (*list)->next->name)) > 0)
130 list = &(*list)->next;
131 if (!(*list)->next || cmp < 0) {
132 struct ref *next = alloc_ref(buffer + 41);
133 buffer[40] = '\0';
134 if (get_sha1_hex(buffer, next->old_sha1)) {
135 warning ("invalid SHA-1: %s", buffer);
136 free(next);
137 continue;
138 }
139 next->next = (*list)->next;
140 (*list)->next = next;
141 list = &(*list)->next;
142 }
143 }
144 }
145
146 static void set_upstreams(struct transport *transport, struct ref *refs,
147 int pretend)
148 {
149 struct ref *ref;
150 for (ref = refs; ref; ref = ref->next) {
151 const char *localname;
152 const char *tmp;
153 const char *remotename;
154 unsigned char sha[20];
155 int flag = 0;
156 /*
157 * Check suitability for tracking. Must be successful /
158 * already up-to-date ref create/modify (not delete).
159 */
160 if (ref->status != REF_STATUS_OK &&
161 ref->status != REF_STATUS_UPTODATE)
162 continue;
163 if (!ref->peer_ref)
164 continue;
165 if (is_null_sha1(ref->new_sha1))
166 continue;
167
168 /* Follow symbolic refs (mainly for HEAD). */
169 localname = ref->peer_ref->name;
170 remotename = ref->name;
171 tmp = resolve_ref_unsafe(localname, sha, 1, &flag);
172 if (tmp && flag & REF_ISSYMREF &&
173 !prefixcmp(tmp, "refs/heads/"))
174 localname = tmp;
175
176 /* Both source and destination must be local branches. */
177 if (!localname || prefixcmp(localname, "refs/heads/"))
178 continue;
179 if (!remotename || prefixcmp(remotename, "refs/heads/"))
180 continue;
181
182 if (!pretend)
183 install_branch_config(BRANCH_CONFIG_VERBOSE,
184 localname + 11, transport->remote->name,
185 remotename);
186 else
187 printf("Would set upstream of '%s' to '%s' of '%s'\n",
188 localname + 11, remotename + 11,
189 transport->remote->name);
190 }
191 }
192
193 static const char *rsync_url(const char *url)
194 {
195 return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
196 }
197
198 static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
199 {
200 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
201 struct ref dummy = {NULL}, *tail = &dummy;
202 struct child_process rsync;
203 const char *args[5];
204 int temp_dir_len;
205
206 if (for_push)
207 return NULL;
208
209 /* copy the refs to the temporary directory */
210
211 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
212 if (!mkdtemp(temp_dir.buf))
213 die_errno ("Could not make temporary directory");
214 temp_dir_len = temp_dir.len;
215
216 strbuf_addstr(&buf, rsync_url(transport->url));
217 strbuf_addstr(&buf, "/refs");
218
219 memset(&rsync, 0, sizeof(rsync));
220 rsync.argv = args;
221 rsync.stdout_to_stderr = 1;
222 args[0] = "rsync";
223 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
224 args[2] = buf.buf;
225 args[3] = temp_dir.buf;
226 args[4] = NULL;
227
228 if (run_command(&rsync))
229 die ("Could not run rsync to get refs");
230
231 strbuf_reset(&buf);
232 strbuf_addstr(&buf, rsync_url(transport->url));
233 strbuf_addstr(&buf, "/packed-refs");
234
235 args[2] = buf.buf;
236
237 if (run_command(&rsync))
238 die ("Could not run rsync to get refs");
239
240 /* read the copied refs */
241
242 strbuf_addstr(&temp_dir, "/refs");
243 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
244 strbuf_setlen(&temp_dir, temp_dir_len);
245
246 tail = &dummy;
247 strbuf_addstr(&temp_dir, "/packed-refs");
248 insert_packed_refs(temp_dir.buf, &tail);
249 strbuf_setlen(&temp_dir, temp_dir_len);
250
251 if (remove_dir_recursively(&temp_dir, 0))
252 warning ("Error removing temporary directory %s.",
253 temp_dir.buf);
254
255 strbuf_release(&buf);
256 strbuf_release(&temp_dir);
257
258 return dummy.next;
259 }
260
261 static int fetch_objs_via_rsync(struct transport *transport,
262 int nr_objs, struct ref **to_fetch)
263 {
264 struct strbuf buf = STRBUF_INIT;
265 struct child_process rsync;
266 const char *args[8];
267 int result;
268
269 strbuf_addstr(&buf, rsync_url(transport->url));
270 strbuf_addstr(&buf, "/objects/");
271
272 memset(&rsync, 0, sizeof(rsync));
273 rsync.argv = args;
274 rsync.stdout_to_stderr = 1;
275 args[0] = "rsync";
276 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
277 args[2] = "--ignore-existing";
278 args[3] = "--exclude";
279 args[4] = "info";
280 args[5] = buf.buf;
281 args[6] = get_object_directory();
282 args[7] = NULL;
283
284 /* NEEDSWORK: handle one level of alternates */
285 result = run_command(&rsync);
286
287 strbuf_release(&buf);
288
289 return result;
290 }
291
292 static int write_one_ref(const char *name, const unsigned char *sha1,
293 int flags, void *data)
294 {
295 struct strbuf *buf = data;
296 int len = buf->len;
297 FILE *f;
298
299 /* when called via for_each_ref(), flags is non-zero */
300 if (flags && prefixcmp(name, "refs/heads/") &&
301 prefixcmp(name, "refs/tags/"))
302 return 0;
303
304 strbuf_addstr(buf, name);
305 if (safe_create_leading_directories(buf->buf) ||
306 !(f = fopen(buf->buf, "w")) ||
307 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
308 fclose(f))
309 return error("problems writing temporary file %s", buf->buf);
310 strbuf_setlen(buf, len);
311 return 0;
312 }
313
314 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
315 int refspec_nr, const char **refspec)
316 {
317 int i;
318
319 for (i = 0; i < refspec_nr; i++) {
320 unsigned char sha1[20];
321 char *ref;
322
323 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
324 return error("Could not get ref %s", refspec[i]);
325
326 if (write_one_ref(ref, sha1, 0, temp_dir)) {
327 free(ref);
328 return -1;
329 }
330 free(ref);
331 }
332 return 0;
333 }
334
335 static int rsync_transport_push(struct transport *transport,
336 int refspec_nr, const char **refspec, int flags)
337 {
338 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
339 int result = 0, i;
340 struct child_process rsync;
341 const char *args[10];
342
343 if (flags & TRANSPORT_PUSH_MIRROR)
344 return error("rsync transport does not support mirror mode");
345
346 /* first push the objects */
347
348 strbuf_addstr(&buf, rsync_url(transport->url));
349 strbuf_addch(&buf, '/');
350
351 memset(&rsync, 0, sizeof(rsync));
352 rsync.argv = args;
353 rsync.stdout_to_stderr = 1;
354 i = 0;
355 args[i++] = "rsync";
356 args[i++] = "-a";
357 if (flags & TRANSPORT_PUSH_DRY_RUN)
358 args[i++] = "--dry-run";
359 if (transport->verbose > 1)
360 args[i++] = "-v";
361 args[i++] = "--ignore-existing";
362 args[i++] = "--exclude";
363 args[i++] = "info";
364 args[i++] = get_object_directory();
365 args[i++] = buf.buf;
366 args[i++] = NULL;
367
368 if (run_command(&rsync))
369 return error("Could not push objects to %s",
370 rsync_url(transport->url));
371
372 /* copy the refs to the temporary directory; they could be packed. */
373
374 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
375 if (!mkdtemp(temp_dir.buf))
376 die_errno ("Could not make temporary directory");
377 strbuf_addch(&temp_dir, '/');
378
379 if (flags & TRANSPORT_PUSH_ALL) {
380 if (for_each_ref(write_one_ref, &temp_dir))
381 return -1;
382 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
383 return -1;
384
385 i = 2;
386 if (flags & TRANSPORT_PUSH_DRY_RUN)
387 args[i++] = "--dry-run";
388 if (!(flags & TRANSPORT_PUSH_FORCE))
389 args[i++] = "--ignore-existing";
390 args[i++] = temp_dir.buf;
391 args[i++] = rsync_url(transport->url);
392 args[i++] = NULL;
393 if (run_command(&rsync))
394 result = error("Could not push to %s",
395 rsync_url(transport->url));
396
397 if (remove_dir_recursively(&temp_dir, 0))
398 warning ("Could not remove temporary directory %s.",
399 temp_dir.buf);
400
401 strbuf_release(&buf);
402 strbuf_release(&temp_dir);
403
404 return result;
405 }
406
407 struct bundle_transport_data {
408 int fd;
409 struct bundle_header header;
410 };
411
412 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
413 {
414 struct bundle_transport_data *data = transport->data;
415 struct ref *result = NULL;
416 int i;
417
418 if (for_push)
419 return NULL;
420
421 if (data->fd > 0)
422 close(data->fd);
423 data->fd = read_bundle_header(transport->url, &data->header);
424 if (data->fd < 0)
425 die ("Could not read bundle '%s'.", transport->url);
426 for (i = 0; i < data->header.references.nr; i++) {
427 struct ref_list_entry *e = data->header.references.list + i;
428 struct ref *ref = alloc_ref(e->name);
429 hashcpy(ref->old_sha1, e->sha1);
430 ref->next = result;
431 result = ref;
432 }
433 return result;
434 }
435
436 static int fetch_refs_from_bundle(struct transport *transport,
437 int nr_heads, struct ref **to_fetch)
438 {
439 struct bundle_transport_data *data = transport->data;
440 return unbundle(&data->header, data->fd,
441 transport->progress ? BUNDLE_VERBOSE : 0);
442 }
443
444 static int close_bundle(struct transport *transport)
445 {
446 struct bundle_transport_data *data = transport->data;
447 if (data->fd > 0)
448 close(data->fd);
449 free(data);
450 return 0;
451 }
452
453 struct git_transport_data {
454 struct git_transport_options options;
455 struct child_process *conn;
456 int fd[2];
457 unsigned got_remote_heads : 1;
458 struct sha1_array extra_have;
459 };
460
461 static int set_git_option(struct git_transport_options *opts,
462 const char *name, const char *value)
463 {
464 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
465 opts->uploadpack = value;
466 return 0;
467 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
468 opts->receivepack = value;
469 return 0;
470 } else if (!strcmp(name, TRANS_OPT_THIN)) {
471 opts->thin = !!value;
472 return 0;
473 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
474 opts->followtags = !!value;
475 return 0;
476 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
477 opts->keep = !!value;
478 return 0;
479 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
480 if (!value)
481 opts->depth = 0;
482 else {
483 char *end;
484 opts->depth = strtol(value, &end, 0);
485 if (*end)
486 die("transport: invalid depth option '%s'", value);
487 }
488 return 0;
489 }
490 return 1;
491 }
492
493 static int connect_setup(struct transport *transport, int for_push, int verbose)
494 {
495 struct git_transport_data *data = transport->data;
496
497 if (data->conn)
498 return 0;
499
500 data->conn = git_connect(data->fd, transport->url,
501 for_push ? data->options.receivepack :
502 data->options.uploadpack,
503 verbose ? CONNECT_VERBOSE : 0);
504
505 return 0;
506 }
507
508 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
509 {
510 struct git_transport_data *data = transport->data;
511 struct ref *refs;
512
513 connect_setup(transport, for_push, 0);
514 get_remote_heads(data->fd[0], NULL, 0, &refs,
515 for_push ? REF_NORMAL : 0, &data->extra_have, NULL);
516 data->got_remote_heads = 1;
517
518 return refs;
519 }
520
521 static int fetch_refs_via_pack(struct transport *transport,
522 int nr_heads, struct ref **to_fetch)
523 {
524 struct git_transport_data *data = transport->data;
525 const struct ref *refs;
526 char *dest = xstrdup(transport->url);
527 struct fetch_pack_args args;
528 struct ref *refs_tmp = NULL;
529
530 memset(&args, 0, sizeof(args));
531 args.uploadpack = data->options.uploadpack;
532 args.keep_pack = data->options.keep;
533 args.lock_pack = 1;
534 args.use_thin_pack = data->options.thin;
535 args.include_tag = data->options.followtags;
536 args.verbose = (transport->verbose > 1);
537 args.quiet = (transport->verbose < 0);
538 args.no_progress = !transport->progress;
539 args.depth = data->options.depth;
540 args.check_self_contained_and_connected =
541 data->options.check_self_contained_and_connected;
542
543 if (!data->got_remote_heads) {
544 connect_setup(transport, 0, 0);
545 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
546 NULL, NULL);
547 data->got_remote_heads = 1;
548 }
549
550 refs = fetch_pack(&args, data->fd, data->conn,
551 refs_tmp ? refs_tmp : transport->remote_refs,
552 dest, to_fetch, nr_heads,
553 &transport->pack_lockfile);
554 close(data->fd[0]);
555 close(data->fd[1]);
556 if (finish_connect(data->conn))
557 refs = NULL;
558 data->conn = NULL;
559 data->got_remote_heads = 0;
560 data->options.self_contained_and_connected =
561 args.self_contained_and_connected;
562
563 free_refs(refs_tmp);
564
565 free(dest);
566 return (refs ? 0 : -1);
567 }
568
569 static int push_had_errors(struct ref *ref)
570 {
571 for (; ref; ref = ref->next) {
572 switch (ref->status) {
573 case REF_STATUS_NONE:
574 case REF_STATUS_UPTODATE:
575 case REF_STATUS_OK:
576 break;
577 default:
578 return 1;
579 }
580 }
581 return 0;
582 }
583
584 int transport_refs_pushed(struct ref *ref)
585 {
586 for (; ref; ref = ref->next) {
587 switch(ref->status) {
588 case REF_STATUS_NONE:
589 case REF_STATUS_UPTODATE:
590 break;
591 default:
592 return 1;
593 }
594 }
595 return 0;
596 }
597
598 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
599 {
600 struct refspec rs;
601
602 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
603 return;
604
605 rs.src = ref->name;
606 rs.dst = NULL;
607
608 if (!remote_find_tracking(remote, &rs)) {
609 if (verbose)
610 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
611 if (ref->deletion) {
612 delete_ref(rs.dst, NULL, 0);
613 } else
614 update_ref("update by push", rs.dst,
615 ref->new_sha1, NULL, 0, 0);
616 free(rs.dst);
617 }
618 }
619
620 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
621 {
622 if (porcelain) {
623 if (from)
624 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
625 else
626 fprintf(stdout, "%c\t:%s\t", flag, to->name);
627 if (msg)
628 fprintf(stdout, "%s (%s)\n", summary, msg);
629 else
630 fprintf(stdout, "%s\n", summary);
631 } else {
632 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
633 if (from)
634 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
635 else
636 fputs(prettify_refname(to->name), stderr);
637 if (msg) {
638 fputs(" (", stderr);
639 fputs(msg, stderr);
640 fputc(')', stderr);
641 }
642 fputc('\n', stderr);
643 }
644 }
645
646 static const char *status_abbrev(unsigned char sha1[20])
647 {
648 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
649 }
650
651 static void print_ok_ref_status(struct ref *ref, int porcelain)
652 {
653 if (ref->deletion)
654 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
655 else if (is_null_sha1(ref->old_sha1))
656 print_ref_status('*',
657 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
658 "[new branch]"),
659 ref, ref->peer_ref, NULL, porcelain);
660 else {
661 char quickref[84];
662 char type;
663 const char *msg;
664
665 strcpy(quickref, status_abbrev(ref->old_sha1));
666 if (ref->forced_update) {
667 strcat(quickref, "...");
668 type = '+';
669 msg = "forced update";
670 } else {
671 strcat(quickref, "..");
672 type = ' ';
673 msg = NULL;
674 }
675 strcat(quickref, status_abbrev(ref->new_sha1));
676
677 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
678 }
679 }
680
681 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
682 {
683 if (!count)
684 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
685
686 switch(ref->status) {
687 case REF_STATUS_NONE:
688 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
689 break;
690 case REF_STATUS_REJECT_NODELETE:
691 print_ref_status('!', "[rejected]", ref, NULL,
692 "remote does not support deleting refs", porcelain);
693 break;
694 case REF_STATUS_UPTODATE:
695 print_ref_status('=', "[up to date]", ref,
696 ref->peer_ref, NULL, porcelain);
697 break;
698 case REF_STATUS_REJECT_NONFASTFORWARD:
699 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
700 "non-fast-forward", porcelain);
701 break;
702 case REF_STATUS_REJECT_ALREADY_EXISTS:
703 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
704 "already exists", porcelain);
705 break;
706 case REF_STATUS_REJECT_FETCH_FIRST:
707 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
708 "fetch first", porcelain);
709 break;
710 case REF_STATUS_REJECT_NEEDS_FORCE:
711 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
712 "needs force", porcelain);
713 break;
714 case REF_STATUS_REJECT_STALE:
715 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
716 "stale info", porcelain);
717 break;
718 case REF_STATUS_REMOTE_REJECT:
719 print_ref_status('!', "[remote rejected]", ref,
720 ref->deletion ? NULL : ref->peer_ref,
721 ref->remote_status, porcelain);
722 break;
723 case REF_STATUS_EXPECTING_REPORT:
724 print_ref_status('!', "[remote failure]", ref,
725 ref->deletion ? NULL : ref->peer_ref,
726 "remote failed to report status", porcelain);
727 break;
728 case REF_STATUS_OK:
729 print_ok_ref_status(ref, porcelain);
730 break;
731 }
732
733 return 1;
734 }
735
736 void transport_print_push_status(const char *dest, struct ref *refs,
737 int verbose, int porcelain, unsigned int *reject_reasons)
738 {
739 struct ref *ref;
740 int n = 0;
741 unsigned char head_sha1[20];
742 char *head;
743
744 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
745
746 if (verbose) {
747 for (ref = refs; ref; ref = ref->next)
748 if (ref->status == REF_STATUS_UPTODATE)
749 n += print_one_push_status(ref, dest, n, porcelain);
750 }
751
752 for (ref = refs; ref; ref = ref->next)
753 if (ref->status == REF_STATUS_OK)
754 n += print_one_push_status(ref, dest, n, porcelain);
755
756 *reject_reasons = 0;
757 for (ref = refs; ref; ref = ref->next) {
758 if (ref->status != REF_STATUS_NONE &&
759 ref->status != REF_STATUS_UPTODATE &&
760 ref->status != REF_STATUS_OK)
761 n += print_one_push_status(ref, dest, n, porcelain);
762 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
763 if (head != NULL && !strcmp(head, ref->name))
764 *reject_reasons |= REJECT_NON_FF_HEAD;
765 else
766 *reject_reasons |= REJECT_NON_FF_OTHER;
767 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
768 *reject_reasons |= REJECT_ALREADY_EXISTS;
769 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
770 *reject_reasons |= REJECT_FETCH_FIRST;
771 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
772 *reject_reasons |= REJECT_NEEDS_FORCE;
773 }
774 }
775 }
776
777 void transport_verify_remote_names(int nr_heads, const char **heads)
778 {
779 int i;
780
781 for (i = 0; i < nr_heads; i++) {
782 const char *local = heads[i];
783 const char *remote = strrchr(heads[i], ':');
784
785 if (*local == '+')
786 local++;
787
788 /* A matching refspec is okay. */
789 if (remote == local && remote[1] == '\0')
790 continue;
791
792 remote = remote ? (remote + 1) : local;
793 if (check_refname_format(remote,
794 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
795 die("remote part of refspec is not a valid name in %s",
796 heads[i]);
797 }
798 }
799
800 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
801 {
802 struct git_transport_data *data = transport->data;
803 struct send_pack_args args;
804 int ret;
805
806 if (!data->got_remote_heads) {
807 struct ref *tmp_refs;
808 connect_setup(transport, 1, 0);
809
810 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL, NULL, NULL);
811 data->got_remote_heads = 1;
812 }
813
814 memset(&args, 0, sizeof(args));
815 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
816 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
817 args.use_thin_pack = data->options.thin;
818 args.verbose = (transport->verbose > 0);
819 args.quiet = (transport->verbose < 0);
820 args.progress = transport->progress;
821 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
822 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
823
824 ret = send_pack(&args, data->fd, data->conn, remote_refs,
825 &data->extra_have);
826
827 close(data->fd[1]);
828 close(data->fd[0]);
829 ret |= finish_connect(data->conn);
830 data->conn = NULL;
831 data->got_remote_heads = 0;
832
833 return ret;
834 }
835
836 static int connect_git(struct transport *transport, const char *name,
837 const char *executable, int fd[2])
838 {
839 struct git_transport_data *data = transport->data;
840 data->conn = git_connect(data->fd, transport->url,
841 executable, 0);
842 fd[0] = data->fd[0];
843 fd[1] = data->fd[1];
844 return 0;
845 }
846
847 static int disconnect_git(struct transport *transport)
848 {
849 struct git_transport_data *data = transport->data;
850 if (data->conn) {
851 if (data->got_remote_heads)
852 packet_flush(data->fd[1]);
853 close(data->fd[0]);
854 close(data->fd[1]);
855 finish_connect(data->conn);
856 }
857
858 free(data);
859 return 0;
860 }
861
862 void transport_take_over(struct transport *transport,
863 struct child_process *child)
864 {
865 struct git_transport_data *data;
866
867 if (!transport->smart_options)
868 die("Bug detected: Taking over transport requires non-NULL "
869 "smart_options field.");
870
871 data = xcalloc(1, sizeof(*data));
872 data->options = *transport->smart_options;
873 data->conn = child;
874 data->fd[0] = data->conn->out;
875 data->fd[1] = data->conn->in;
876 data->got_remote_heads = 0;
877 transport->data = data;
878
879 transport->set_option = NULL;
880 transport->get_refs_list = get_refs_via_connect;
881 transport->fetch = fetch_refs_via_pack;
882 transport->push = NULL;
883 transport->push_refs = git_transport_push;
884 transport->disconnect = disconnect_git;
885 transport->smart_options = &(data->options);
886
887 transport->cannot_reuse = 1;
888 }
889
890 static int is_local(const char *url)
891 {
892 const char *colon = strchr(url, ':');
893 const char *slash = strchr(url, '/');
894 return !colon || (slash && slash < colon) ||
895 has_dos_drive_prefix(url);
896 }
897
898 static int is_file(const char *url)
899 {
900 struct stat buf;
901 if (stat(url, &buf))
902 return 0;
903 return S_ISREG(buf.st_mode);
904 }
905
906 static int external_specification_len(const char *url)
907 {
908 return strchr(url, ':') - url;
909 }
910
911 struct transport *transport_get(struct remote *remote, const char *url)
912 {
913 const char *helper;
914 struct transport *ret = xcalloc(1, sizeof(*ret));
915
916 ret->progress = isatty(2);
917
918 if (!remote)
919 die("No remote provided to transport_get()");
920
921 ret->got_remote_refs = 0;
922 ret->remote = remote;
923 helper = remote->foreign_vcs;
924
925 if (!url && remote->url)
926 url = remote->url[0];
927 ret->url = url;
928
929 /* maybe it is a foreign URL? */
930 if (url) {
931 const char *p = url;
932
933 while (is_urlschemechar(p == url, *p))
934 p++;
935 if (!prefixcmp(p, "::"))
936 helper = xstrndup(url, p - url);
937 }
938
939 if (helper) {
940 transport_helper_init(ret, helper);
941 } else if (!prefixcmp(url, "rsync:")) {
942 ret->get_refs_list = get_refs_via_rsync;
943 ret->fetch = fetch_objs_via_rsync;
944 ret->push = rsync_transport_push;
945 ret->smart_options = NULL;
946 } else if (is_local(url) && is_file(url) && is_bundle(url, 1)) {
947 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
948 ret->data = data;
949 ret->get_refs_list = get_refs_from_bundle;
950 ret->fetch = fetch_refs_from_bundle;
951 ret->disconnect = close_bundle;
952 ret->smart_options = NULL;
953 } else if (!is_url(url)
954 || !prefixcmp(url, "file://")
955 || !prefixcmp(url, "git://")
956 || !prefixcmp(url, "ssh://")
957 || !prefixcmp(url, "git+ssh://")
958 || !prefixcmp(url, "ssh+git://")) {
959 /* These are builtin smart transports. */
960 struct git_transport_data *data = xcalloc(1, sizeof(*data));
961 ret->data = data;
962 ret->set_option = NULL;
963 ret->get_refs_list = get_refs_via_connect;
964 ret->fetch = fetch_refs_via_pack;
965 ret->push_refs = git_transport_push;
966 ret->connect = connect_git;
967 ret->disconnect = disconnect_git;
968 ret->smart_options = &(data->options);
969
970 data->conn = NULL;
971 data->got_remote_heads = 0;
972 } else {
973 /* Unknown protocol in URL. Pass to external handler. */
974 int len = external_specification_len(url);
975 char *handler = xmalloc(len + 1);
976 handler[len] = 0;
977 strncpy(handler, url, len);
978 transport_helper_init(ret, handler);
979 }
980
981 if (ret->smart_options) {
982 ret->smart_options->thin = 1;
983 ret->smart_options->uploadpack = "git-upload-pack";
984 if (remote->uploadpack)
985 ret->smart_options->uploadpack = remote->uploadpack;
986 ret->smart_options->receivepack = "git-receive-pack";
987 if (remote->receivepack)
988 ret->smart_options->receivepack = remote->receivepack;
989 }
990
991 return ret;
992 }
993
994 int transport_set_option(struct transport *transport,
995 const char *name, const char *value)
996 {
997 int git_reports = 1, protocol_reports = 1;
998
999 if (transport->smart_options)
1000 git_reports = set_git_option(transport->smart_options,
1001 name, value);
1002
1003 if (transport->set_option)
1004 protocol_reports = transport->set_option(transport, name,
1005 value);
1006
1007 /* If either report is 0, report 0 (success). */
1008 if (!git_reports || !protocol_reports)
1009 return 0;
1010 /* If either reports -1 (invalid value), report -1. */
1011 if ((git_reports == -1) || (protocol_reports == -1))
1012 return -1;
1013 /* Otherwise if both report unknown, report unknown. */
1014 return 1;
1015 }
1016
1017 void transport_set_verbosity(struct transport *transport, int verbosity,
1018 int force_progress)
1019 {
1020 if (verbosity >= 1)
1021 transport->verbose = verbosity <= 3 ? verbosity : 3;
1022 if (verbosity < 0)
1023 transport->verbose = -1;
1024
1025 /**
1026 * Rules used to determine whether to report progress (processing aborts
1027 * when a rule is satisfied):
1028 *
1029 * . Report progress, if force_progress is 1 (ie. --progress).
1030 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1031 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1032 * . Report progress if isatty(2) is 1.
1033 **/
1034 if (force_progress >= 0)
1035 transport->progress = !!force_progress;
1036 else
1037 transport->progress = verbosity >= 0 && isatty(2);
1038 }
1039
1040 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1041 {
1042 int i;
1043
1044 fprintf(stderr, "The following submodule paths contain changes that can\n"
1045 "not be found on any remote:\n");
1046 for (i = 0; i < needs_pushing->nr; i++)
1047 printf(" %s\n", needs_pushing->items[i].string);
1048 fprintf(stderr, "\nPlease try\n\n"
1049 " git push --recurse-submodules=on-demand\n\n"
1050 "or cd to the path and use\n\n"
1051 " git push\n\n"
1052 "to push them to a remote.\n\n");
1053
1054 string_list_clear(needs_pushing, 0);
1055
1056 die("Aborting.");
1057 }
1058
1059 static int run_pre_push_hook(struct transport *transport,
1060 struct ref *remote_refs)
1061 {
1062 int ret = 0, x;
1063 struct ref *r;
1064 struct child_process proc;
1065 struct strbuf buf;
1066 const char *argv[4];
1067
1068 if (!(argv[0] = find_hook("pre-push")))
1069 return 0;
1070
1071 argv[1] = transport->remote->name;
1072 argv[2] = transport->url;
1073 argv[3] = NULL;
1074
1075 memset(&proc, 0, sizeof(proc));
1076 proc.argv = argv;
1077 proc.in = -1;
1078
1079 if (start_command(&proc)) {
1080 finish_command(&proc);
1081 return -1;
1082 }
1083
1084 strbuf_init(&buf, 256);
1085
1086 for (r = remote_refs; r; r = r->next) {
1087 if (!r->peer_ref) continue;
1088 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1089 if (r->status == REF_STATUS_REJECT_STALE) continue;
1090 if (r->status == REF_STATUS_UPTODATE) continue;
1091
1092 strbuf_reset(&buf);
1093 strbuf_addf( &buf, "%s %s %s %s\n",
1094 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1095 r->name, sha1_to_hex(r->old_sha1));
1096
1097 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1098 ret = -1;
1099 break;
1100 }
1101 }
1102
1103 strbuf_release(&buf);
1104
1105 x = close(proc.in);
1106 if (!ret)
1107 ret = x;
1108
1109 x = finish_command(&proc);
1110 if (!ret)
1111 ret = x;
1112
1113 return ret;
1114 }
1115
1116 int transport_push(struct transport *transport,
1117 int refspec_nr, const char **refspec, int flags,
1118 unsigned int *reject_reasons)
1119 {
1120 *reject_reasons = 0;
1121 transport_verify_remote_names(refspec_nr, refspec);
1122
1123 if (transport->push) {
1124 /* Maybe FIXME. But no important transport uses this case. */
1125 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1126 die("This transport does not support using --set-upstream");
1127
1128 return transport->push(transport, refspec_nr, refspec, flags);
1129 } else if (transport->push_refs) {
1130 struct ref *remote_refs =
1131 transport->get_refs_list(transport, 1);
1132 struct ref *local_refs = get_local_heads();
1133 int match_flags = MATCH_REFS_NONE;
1134 int verbose = (transport->verbose > 0);
1135 int quiet = (transport->verbose < 0);
1136 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1137 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1138 int push_ret, ret, err;
1139
1140 if (flags & TRANSPORT_PUSH_ALL)
1141 match_flags |= MATCH_REFS_ALL;
1142 if (flags & TRANSPORT_PUSH_MIRROR)
1143 match_flags |= MATCH_REFS_MIRROR;
1144 if (flags & TRANSPORT_PUSH_PRUNE)
1145 match_flags |= MATCH_REFS_PRUNE;
1146 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1147 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1148
1149 if (match_push_refs(local_refs, &remote_refs,
1150 refspec_nr, refspec, match_flags)) {
1151 return -1;
1152 }
1153
1154 if (transport->smart_options &&
1155 transport->smart_options->cas &&
1156 !is_empty_cas(transport->smart_options->cas))
1157 apply_push_cas(transport->smart_options->cas,
1158 transport->remote, remote_refs);
1159
1160 set_ref_status_for_push(remote_refs,
1161 flags & TRANSPORT_PUSH_MIRROR,
1162 flags & TRANSPORT_PUSH_FORCE);
1163
1164 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1165 if (run_pre_push_hook(transport, remote_refs))
1166 return -1;
1167
1168 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1169 struct ref *ref = remote_refs;
1170 for (; ref; ref = ref->next)
1171 if (!is_null_sha1(ref->new_sha1) &&
1172 !push_unpushed_submodules(ref->new_sha1,
1173 transport->remote->name))
1174 die ("Failed to push all needed submodules!");
1175 }
1176
1177 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1178 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1179 struct ref *ref = remote_refs;
1180 struct string_list needs_pushing;
1181
1182 memset(&needs_pushing, 0, sizeof(struct string_list));
1183 needs_pushing.strdup_strings = 1;
1184 for (; ref; ref = ref->next)
1185 if (!is_null_sha1(ref->new_sha1) &&
1186 find_unpushed_submodules(ref->new_sha1,
1187 transport->remote->name, &needs_pushing))
1188 die_with_unpushed_submodules(&needs_pushing);
1189 }
1190
1191 push_ret = transport->push_refs(transport, remote_refs, flags);
1192 err = push_had_errors(remote_refs);
1193 ret = push_ret | err;
1194
1195 if (!quiet || err)
1196 transport_print_push_status(transport->url, remote_refs,
1197 verbose | porcelain, porcelain,
1198 reject_reasons);
1199
1200 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1201 set_upstreams(transport, remote_refs, pretend);
1202
1203 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1204 struct ref *ref;
1205 for (ref = remote_refs; ref; ref = ref->next)
1206 transport_update_tracking_ref(transport->remote, ref, verbose);
1207 }
1208
1209 if (porcelain && !push_ret)
1210 puts("Done");
1211 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1212 fprintf(stderr, "Everything up-to-date\n");
1213
1214 return ret;
1215 }
1216 return 1;
1217 }
1218
1219 const struct ref *transport_get_remote_refs(struct transport *transport)
1220 {
1221 if (!transport->got_remote_refs) {
1222 transport->remote_refs = transport->get_refs_list(transport, 0);
1223 transport->got_remote_refs = 1;
1224 }
1225
1226 return transport->remote_refs;
1227 }
1228
1229 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1230 {
1231 int rc;
1232 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1233 struct ref **heads = NULL;
1234 struct ref *rm;
1235
1236 for (rm = refs; rm; rm = rm->next) {
1237 nr_refs++;
1238 if (rm->peer_ref &&
1239 !is_null_sha1(rm->old_sha1) &&
1240 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1241 continue;
1242 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1243 heads[nr_heads++] = rm;
1244 }
1245
1246 if (!nr_heads) {
1247 /*
1248 * When deepening of a shallow repository is requested,
1249 * then local and remote refs are likely to still be equal.
1250 * Just feed them all to the fetch method in that case.
1251 * This condition shouldn't be met in a non-deepening fetch
1252 * (see builtin/fetch.c:quickfetch()).
1253 */
1254 heads = xmalloc(nr_refs * sizeof(*heads));
1255 for (rm = refs; rm; rm = rm->next)
1256 heads[nr_heads++] = rm;
1257 }
1258
1259 rc = transport->fetch(transport, nr_heads, heads);
1260
1261 free(heads);
1262 return rc;
1263 }
1264
1265 void transport_unlock_pack(struct transport *transport)
1266 {
1267 if (transport->pack_lockfile) {
1268 unlink_or_warn(transport->pack_lockfile);
1269 free(transport->pack_lockfile);
1270 transport->pack_lockfile = NULL;
1271 }
1272 }
1273
1274 int transport_connect(struct transport *transport, const char *name,
1275 const char *exec, int fd[2])
1276 {
1277 if (transport->connect)
1278 return transport->connect(transport, name, exec, fd);
1279 else
1280 die("Operation not supported by protocol");
1281 }
1282
1283 int transport_disconnect(struct transport *transport)
1284 {
1285 int ret = 0;
1286 if (transport->disconnect)
1287 ret = transport->disconnect(transport);
1288 free(transport);
1289 return ret;
1290 }
1291
1292 /*
1293 * Strip username (and password) from a URL and return
1294 * it in a newly allocated string.
1295 */
1296 char *transport_anonymize_url(const char *url)
1297 {
1298 char *anon_url, *scheme_prefix, *anon_part;
1299 size_t anon_len, prefix_len = 0;
1300
1301 anon_part = strchr(url, '@');
1302 if (is_local(url) || !anon_part)
1303 goto literal_copy;
1304
1305 anon_len = strlen(++anon_part);
1306 scheme_prefix = strstr(url, "://");
1307 if (!scheme_prefix) {
1308 if (!strchr(anon_part, ':'))
1309 /* cannot be "me@there:/path/name" */
1310 goto literal_copy;
1311 } else {
1312 const char *cp;
1313 /* make sure scheme is reasonable */
1314 for (cp = url; cp < scheme_prefix; cp++) {
1315 switch (*cp) {
1316 /* RFC 1738 2.1 */
1317 case '+': case '.': case '-':
1318 break; /* ok */
1319 default:
1320 if (isalnum(*cp))
1321 break;
1322 /* it isn't */
1323 goto literal_copy;
1324 }
1325 }
1326 /* @ past the first slash does not count */
1327 cp = strchr(scheme_prefix + 3, '/');
1328 if (cp && cp < anon_part)
1329 goto literal_copy;
1330 prefix_len = scheme_prefix - url + 3;
1331 }
1332 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1333 memcpy(anon_url, url, prefix_len);
1334 memcpy(anon_url + prefix_len, anon_part, anon_len);
1335 return anon_url;
1336 literal_copy:
1337 return xstrdup(url);
1338 }
1339
1340 struct alternate_refs_data {
1341 alternate_ref_fn *fn;
1342 void *data;
1343 };
1344
1345 static int refs_from_alternate_cb(struct alternate_object_database *e,
1346 void *data)
1347 {
1348 char *other;
1349 size_t len;
1350 struct remote *remote;
1351 struct transport *transport;
1352 const struct ref *extra;
1353 struct alternate_refs_data *cb = data;
1354
1355 e->name[-1] = '\0';
1356 other = xstrdup(real_path(e->base));
1357 e->name[-1] = '/';
1358 len = strlen(other);
1359
1360 while (other[len-1] == '/')
1361 other[--len] = '\0';
1362 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1363 return 0;
1364 /* Is this a git repository with refs? */
1365 memcpy(other + len - 8, "/refs", 6);
1366 if (!is_directory(other))
1367 return 0;
1368 other[len - 8] = '\0';
1369 remote = remote_get(other);
1370 transport = transport_get(remote, other);
1371 for (extra = transport_get_remote_refs(transport);
1372 extra;
1373 extra = extra->next)
1374 cb->fn(extra, cb->data);
1375 transport_disconnect(transport);
1376 free(other);
1377 return 0;
1378 }
1379
1380 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1381 {
1382 struct alternate_refs_data cb;
1383 cb.fn = fn;
1384 cb.data = data;
1385 foreach_alt_odb(refs_from_alternate_cb, &cb);
1386 }
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