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rename_ref: don't ask read_ref_full where the ref came from
[git/mjg.git] / transport.c
blob055d2a27d945de69f20a890d5e184b7bd09f93d9
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 starts_with(tmp, "refs/heads/"))
174 localname = tmp;
175
176 /* Both source and destination must be local branches. */
177 if (!localname || !starts_with(localname, "refs/heads/"))
178 continue;
179 if (!remotename || !starts_with(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 if (!starts_with(url, "rsync://"))
196 skip_prefix(url, "rsync:", &url);
197 return url;
198 }
199
200 static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
201 {
202 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
203 struct ref dummy = {NULL}, *tail = &dummy;
204 struct child_process rsync = CHILD_PROCESS_INIT;
205 const char *args[5];
206 int temp_dir_len;
207
208 if (for_push)
209 return NULL;
210
211 /* copy the refs to the temporary directory */
212
213 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
214 if (!mkdtemp(temp_dir.buf))
215 die_errno ("Could not make temporary directory");
216 temp_dir_len = temp_dir.len;
217
218 strbuf_addstr(&buf, rsync_url(transport->url));
219 strbuf_addstr(&buf, "/refs");
220
221 rsync.argv = args;
222 rsync.stdout_to_stderr = 1;
223 args[0] = "rsync";
224 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
225 args[2] = buf.buf;
226 args[3] = temp_dir.buf;
227 args[4] = NULL;
228
229 if (run_command(&rsync))
230 die ("Could not run rsync to get refs");
231
232 strbuf_reset(&buf);
233 strbuf_addstr(&buf, rsync_url(transport->url));
234 strbuf_addstr(&buf, "/packed-refs");
235
236 args[2] = buf.buf;
237
238 if (run_command(&rsync))
239 die ("Could not run rsync to get refs");
240
241 /* read the copied refs */
242
243 strbuf_addstr(&temp_dir, "/refs");
244 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
245 strbuf_setlen(&temp_dir, temp_dir_len);
246
247 tail = &dummy;
248 strbuf_addstr(&temp_dir, "/packed-refs");
249 insert_packed_refs(temp_dir.buf, &tail);
250 strbuf_setlen(&temp_dir, temp_dir_len);
251
252 if (remove_dir_recursively(&temp_dir, 0))
253 warning ("Error removing temporary directory %s.",
254 temp_dir.buf);
255
256 strbuf_release(&buf);
257 strbuf_release(&temp_dir);
258
259 return dummy.next;
260 }
261
262 static int fetch_objs_via_rsync(struct transport *transport,
263 int nr_objs, struct ref **to_fetch)
264 {
265 struct child_process rsync = CHILD_PROCESS_INIT;
266
267 rsync.stdout_to_stderr = 1;
268 argv_array_push(&rsync.args, "rsync");
269 argv_array_push(&rsync.args, (transport->verbose > 1) ? "-rv" : "-r");
270 argv_array_push(&rsync.args, "--ignore-existing");
271 argv_array_push(&rsync.args, "--exclude");
272 argv_array_push(&rsync.args, "info");
273 argv_array_pushf(&rsync.args, "%s/objects/", rsync_url(transport->url));
274 argv_array_push(&rsync.args, get_object_directory());
275
276 /* NEEDSWORK: handle one level of alternates */
277 return run_command(&rsync);
278 }
279
280 static int write_one_ref(const char *name, const unsigned char *sha1,
281 int flags, void *data)
282 {
283 struct strbuf *buf = data;
284 int len = buf->len;
285 FILE *f;
286
287 /* when called via for_each_ref(), flags is non-zero */
288 if (flags && !starts_with(name, "refs/heads/") &&
289 !starts_with(name, "refs/tags/"))
290 return 0;
291
292 strbuf_addstr(buf, name);
293 if (safe_create_leading_directories(buf->buf) ||
294 !(f = fopen(buf->buf, "w")) ||
295 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
296 fclose(f))
297 return error("problems writing temporary file %s", buf->buf);
298 strbuf_setlen(buf, len);
299 return 0;
300 }
301
302 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
303 int refspec_nr, const char **refspec)
304 {
305 int i;
306
307 for (i = 0; i < refspec_nr; i++) {
308 unsigned char sha1[20];
309 char *ref;
310
311 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
312 return error("Could not get ref %s", refspec[i]);
313
314 if (write_one_ref(ref, sha1, 0, temp_dir)) {
315 free(ref);
316 return -1;
317 }
318 free(ref);
319 }
320 return 0;
321 }
322
323 static int rsync_transport_push(struct transport *transport,
324 int refspec_nr, const char **refspec, int flags)
325 {
326 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
327 int result = 0, i;
328 struct child_process rsync = CHILD_PROCESS_INIT;
329 const char *args[10];
330
331 if (flags & TRANSPORT_PUSH_MIRROR)
332 return error("rsync transport does not support mirror mode");
333
334 /* first push the objects */
335
336 strbuf_addstr(&buf, rsync_url(transport->url));
337 strbuf_addch(&buf, '/');
338
339 rsync.argv = args;
340 rsync.stdout_to_stderr = 1;
341 i = 0;
342 args[i++] = "rsync";
343 args[i++] = "-a";
344 if (flags & TRANSPORT_PUSH_DRY_RUN)
345 args[i++] = "--dry-run";
346 if (transport->verbose > 1)
347 args[i++] = "-v";
348 args[i++] = "--ignore-existing";
349 args[i++] = "--exclude";
350 args[i++] = "info";
351 args[i++] = get_object_directory();
352 args[i++] = buf.buf;
353 args[i++] = NULL;
354
355 if (run_command(&rsync))
356 return error("Could not push objects to %s",
357 rsync_url(transport->url));
358
359 /* copy the refs to the temporary directory; they could be packed. */
360
361 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
362 if (!mkdtemp(temp_dir.buf))
363 die_errno ("Could not make temporary directory");
364 strbuf_addch(&temp_dir, '/');
365
366 if (flags & TRANSPORT_PUSH_ALL) {
367 if (for_each_ref(write_one_ref, &temp_dir))
368 return -1;
369 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
370 return -1;
371
372 i = 2;
373 if (flags & TRANSPORT_PUSH_DRY_RUN)
374 args[i++] = "--dry-run";
375 if (!(flags & TRANSPORT_PUSH_FORCE))
376 args[i++] = "--ignore-existing";
377 args[i++] = temp_dir.buf;
378 args[i++] = rsync_url(transport->url);
379 args[i++] = NULL;
380 if (run_command(&rsync))
381 result = error("Could not push to %s",
382 rsync_url(transport->url));
383
384 if (remove_dir_recursively(&temp_dir, 0))
385 warning ("Could not remove temporary directory %s.",
386 temp_dir.buf);
387
388 strbuf_release(&buf);
389 strbuf_release(&temp_dir);
390
391 return result;
392 }
393
394 struct bundle_transport_data {
395 int fd;
396 struct bundle_header header;
397 };
398
399 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
400 {
401 struct bundle_transport_data *data = transport->data;
402 struct ref *result = NULL;
403 int i;
404
405 if (for_push)
406 return NULL;
407
408 if (data->fd > 0)
409 close(data->fd);
410 data->fd = read_bundle_header(transport->url, &data->header);
411 if (data->fd < 0)
412 die ("Could not read bundle '%s'.", transport->url);
413 for (i = 0; i < data->header.references.nr; i++) {
414 struct ref_list_entry *e = data->header.references.list + i;
415 struct ref *ref = alloc_ref(e->name);
416 hashcpy(ref->old_sha1, e->sha1);
417 ref->next = result;
418 result = ref;
419 }
420 return result;
421 }
422
423 static int fetch_refs_from_bundle(struct transport *transport,
424 int nr_heads, struct ref **to_fetch)
425 {
426 struct bundle_transport_data *data = transport->data;
427 return unbundle(&data->header, data->fd,
428 transport->progress ? BUNDLE_VERBOSE : 0);
429 }
430
431 static int close_bundle(struct transport *transport)
432 {
433 struct bundle_transport_data *data = transport->data;
434 if (data->fd > 0)
435 close(data->fd);
436 free(data);
437 return 0;
438 }
439
440 struct git_transport_data {
441 struct git_transport_options options;
442 struct child_process *conn;
443 int fd[2];
444 unsigned got_remote_heads : 1;
445 struct sha1_array extra_have;
446 struct sha1_array shallow;
447 };
448
449 static int set_git_option(struct git_transport_options *opts,
450 const char *name, const char *value)
451 {
452 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
453 opts->uploadpack = value;
454 return 0;
455 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
456 opts->receivepack = value;
457 return 0;
458 } else if (!strcmp(name, TRANS_OPT_THIN)) {
459 opts->thin = !!value;
460 return 0;
461 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
462 opts->followtags = !!value;
463 return 0;
464 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
465 opts->keep = !!value;
466 return 0;
467 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
468 opts->update_shallow = !!value;
469 return 0;
470 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
471 if (!value)
472 opts->depth = 0;
473 else {
474 char *end;
475 opts->depth = strtol(value, &end, 0);
476 if (*end)
477 die("transport: invalid depth option '%s'", value);
478 }
479 return 0;
480 } else if (!strcmp(name, TRANS_OPT_PUSH_CERT)) {
481 opts->push_cert = !!value;
482 return 0;
483 }
484 return 1;
485 }
486
487 static int connect_setup(struct transport *transport, int for_push, int verbose)
488 {
489 struct git_transport_data *data = transport->data;
490
491 if (data->conn)
492 return 0;
493
494 data->conn = git_connect(data->fd, transport->url,
495 for_push ? data->options.receivepack :
496 data->options.uploadpack,
497 verbose ? CONNECT_VERBOSE : 0);
498
499 return 0;
500 }
501
502 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
503 {
504 struct git_transport_data *data = transport->data;
505 struct ref *refs;
506
507 connect_setup(transport, for_push, 0);
508 get_remote_heads(data->fd[0], NULL, 0, &refs,
509 for_push ? REF_NORMAL : 0,
510 &data->extra_have,
511 &data->shallow);
512 data->got_remote_heads = 1;
513
514 return refs;
515 }
516
517 static int fetch_refs_via_pack(struct transport *transport,
518 int nr_heads, struct ref **to_fetch)
519 {
520 struct git_transport_data *data = transport->data;
521 const struct ref *refs;
522 char *dest = xstrdup(transport->url);
523 struct fetch_pack_args args;
524 struct ref *refs_tmp = NULL;
525
526 memset(&args, 0, sizeof(args));
527 args.uploadpack = data->options.uploadpack;
528 args.keep_pack = data->options.keep;
529 args.lock_pack = 1;
530 args.use_thin_pack = data->options.thin;
531 args.include_tag = data->options.followtags;
532 args.verbose = (transport->verbose > 1);
533 args.quiet = (transport->verbose < 0);
534 args.no_progress = !transport->progress;
535 args.depth = data->options.depth;
536 args.check_self_contained_and_connected =
537 data->options.check_self_contained_and_connected;
538 args.cloning = transport->cloning;
539 args.update_shallow = data->options.update_shallow;
540
541 if (!data->got_remote_heads) {
542 connect_setup(transport, 0, 0);
543 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
544 NULL, &data->shallow);
545 data->got_remote_heads = 1;
546 }
547
548 refs = fetch_pack(&args, data->fd, data->conn,
549 refs_tmp ? refs_tmp : transport->remote_refs,
550 dest, to_fetch, nr_heads, &data->shallow,
551 &transport->pack_lockfile);
552 close(data->fd[0]);
553 close(data->fd[1]);
554 if (finish_connect(data->conn))
555 refs = NULL;
556 data->conn = NULL;
557 data->got_remote_heads = 0;
558 data->options.self_contained_and_connected =
559 args.self_contained_and_connected;
560
561 free_refs(refs_tmp);
562
563 free(dest);
564 return (refs ? 0 : -1);
565 }
566
567 static int push_had_errors(struct ref *ref)
568 {
569 for (; ref; ref = ref->next) {
570 switch (ref->status) {
571 case REF_STATUS_NONE:
572 case REF_STATUS_UPTODATE:
573 case REF_STATUS_OK:
574 break;
575 default:
576 return 1;
577 }
578 }
579 return 0;
580 }
581
582 int transport_refs_pushed(struct ref *ref)
583 {
584 for (; ref; ref = ref->next) {
585 switch(ref->status) {
586 case REF_STATUS_NONE:
587 case REF_STATUS_UPTODATE:
588 break;
589 default:
590 return 1;
591 }
592 }
593 return 0;
594 }
595
596 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
597 {
598 struct refspec rs;
599
600 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
601 return;
602
603 rs.src = ref->name;
604 rs.dst = NULL;
605
606 if (!remote_find_tracking(remote, &rs)) {
607 if (verbose)
608 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
609 if (ref->deletion) {
610 delete_ref(rs.dst, NULL, 0);
611 } else
612 update_ref("update by push", rs.dst,
613 ref->new_sha1, NULL, 0, 0);
614 free(rs.dst);
615 }
616 }
617
618 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
619 {
620 if (porcelain) {
621 if (from)
622 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
623 else
624 fprintf(stdout, "%c\t:%s\t", flag, to->name);
625 if (msg)
626 fprintf(stdout, "%s (%s)\n", summary, msg);
627 else
628 fprintf(stdout, "%s\n", summary);
629 } else {
630 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
631 if (from)
632 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
633 else
634 fputs(prettify_refname(to->name), stderr);
635 if (msg) {
636 fputs(" (", stderr);
637 fputs(msg, stderr);
638 fputc(')', stderr);
639 }
640 fputc('\n', stderr);
641 }
642 }
643
644 static const char *status_abbrev(unsigned char sha1[20])
645 {
646 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
647 }
648
649 static void print_ok_ref_status(struct ref *ref, int porcelain)
650 {
651 if (ref->deletion)
652 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
653 else if (is_null_sha1(ref->old_sha1))
654 print_ref_status('*',
655 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
656 "[new branch]"),
657 ref, ref->peer_ref, NULL, porcelain);
658 else {
659 char quickref[84];
660 char type;
661 const char *msg;
662
663 strcpy(quickref, status_abbrev(ref->old_sha1));
664 if (ref->forced_update) {
665 strcat(quickref, "...");
666 type = '+';
667 msg = "forced update";
668 } else {
669 strcat(quickref, "..");
670 type = ' ';
671 msg = NULL;
672 }
673 strcat(quickref, status_abbrev(ref->new_sha1));
674
675 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
676 }
677 }
678
679 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
680 {
681 if (!count)
682 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
683
684 switch(ref->status) {
685 case REF_STATUS_NONE:
686 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
687 break;
688 case REF_STATUS_REJECT_NODELETE:
689 print_ref_status('!', "[rejected]", ref, NULL,
690 "remote does not support deleting refs", porcelain);
691 break;
692 case REF_STATUS_UPTODATE:
693 print_ref_status('=', "[up to date]", ref,
694 ref->peer_ref, NULL, porcelain);
695 break;
696 case REF_STATUS_REJECT_NONFASTFORWARD:
697 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
698 "non-fast-forward", porcelain);
699 break;
700 case REF_STATUS_REJECT_ALREADY_EXISTS:
701 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
702 "already exists", porcelain);
703 break;
704 case REF_STATUS_REJECT_FETCH_FIRST:
705 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
706 "fetch first", porcelain);
707 break;
708 case REF_STATUS_REJECT_NEEDS_FORCE:
709 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
710 "needs force", porcelain);
711 break;
712 case REF_STATUS_REJECT_STALE:
713 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
714 "stale info", porcelain);
715 break;
716 case REF_STATUS_REJECT_SHALLOW:
717 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
718 "new shallow roots not allowed", porcelain);
719 break;
720 case REF_STATUS_REMOTE_REJECT:
721 print_ref_status('!', "[remote rejected]", ref,
722 ref->deletion ? NULL : ref->peer_ref,
723 ref->remote_status, porcelain);
724 break;
725 case REF_STATUS_EXPECTING_REPORT:
726 print_ref_status('!', "[remote failure]", ref,
727 ref->deletion ? NULL : ref->peer_ref,
728 "remote failed to report status", porcelain);
729 break;
730 case REF_STATUS_OK:
731 print_ok_ref_status(ref, porcelain);
732 break;
733 }
734
735 return 1;
736 }
737
738 void transport_print_push_status(const char *dest, struct ref *refs,
739 int verbose, int porcelain, unsigned int *reject_reasons)
740 {
741 struct ref *ref;
742 int n = 0;
743 unsigned char head_sha1[20];
744 char *head;
745
746 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
747
748 if (verbose) {
749 for (ref = refs; ref; ref = ref->next)
750 if (ref->status == REF_STATUS_UPTODATE)
751 n += print_one_push_status(ref, dest, n, porcelain);
752 }
753
754 for (ref = refs; ref; ref = ref->next)
755 if (ref->status == REF_STATUS_OK)
756 n += print_one_push_status(ref, dest, n, porcelain);
757
758 *reject_reasons = 0;
759 for (ref = refs; ref; ref = ref->next) {
760 if (ref->status != REF_STATUS_NONE &&
761 ref->status != REF_STATUS_UPTODATE &&
762 ref->status != REF_STATUS_OK)
763 n += print_one_push_status(ref, dest, n, porcelain);
764 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
765 if (head != NULL && !strcmp(head, ref->name))
766 *reject_reasons |= REJECT_NON_FF_HEAD;
767 else
768 *reject_reasons |= REJECT_NON_FF_OTHER;
769 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
770 *reject_reasons |= REJECT_ALREADY_EXISTS;
771 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
772 *reject_reasons |= REJECT_FETCH_FIRST;
773 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
774 *reject_reasons |= REJECT_NEEDS_FORCE;
775 }
776 }
777 }
778
779 void transport_verify_remote_names(int nr_heads, const char **heads)
780 {
781 int i;
782
783 for (i = 0; i < nr_heads; i++) {
784 const char *local = heads[i];
785 const char *remote = strrchr(heads[i], ':');
786
787 if (*local == '+')
788 local++;
789
790 /* A matching refspec is okay. */
791 if (remote == local && remote[1] == '\0')
792 continue;
793
794 remote = remote ? (remote + 1) : local;
795 if (check_refname_format(remote,
796 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
797 die("remote part of refspec is not a valid name in %s",
798 heads[i]);
799 }
800 }
801
802 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
803 {
804 struct git_transport_data *data = transport->data;
805 struct send_pack_args args;
806 int ret;
807
808 if (!data->got_remote_heads) {
809 struct ref *tmp_refs;
810 connect_setup(transport, 1, 0);
811
812 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
813 NULL, &data->shallow);
814 data->got_remote_heads = 1;
815 }
816
817 memset(&args, 0, sizeof(args));
818 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
819 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
820 args.use_thin_pack = data->options.thin;
821 args.verbose = (transport->verbose > 0);
822 args.quiet = (transport->verbose < 0);
823 args.progress = transport->progress;
824 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
825 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
826 args.push_cert = !!(flags & TRANSPORT_PUSH_CERT);
827 args.url = transport->url;
828
829 ret = send_pack(&args, data->fd, data->conn, remote_refs,
830 &data->extra_have);
831
832 close(data->fd[1]);
833 close(data->fd[0]);
834 ret |= finish_connect(data->conn);
835 data->conn = NULL;
836 data->got_remote_heads = 0;
837
838 return ret;
839 }
840
841 static int connect_git(struct transport *transport, const char *name,
842 const char *executable, int fd[2])
843 {
844 struct git_transport_data *data = transport->data;
845 data->conn = git_connect(data->fd, transport->url,
846 executable, 0);
847 fd[0] = data->fd[0];
848 fd[1] = data->fd[1];
849 return 0;
850 }
851
852 static int disconnect_git(struct transport *transport)
853 {
854 struct git_transport_data *data = transport->data;
855 if (data->conn) {
856 if (data->got_remote_heads)
857 packet_flush(data->fd[1]);
858 close(data->fd[0]);
859 close(data->fd[1]);
860 finish_connect(data->conn);
861 }
862
863 free(data);
864 return 0;
865 }
866
867 void transport_take_over(struct transport *transport,
868 struct child_process *child)
869 {
870 struct git_transport_data *data;
871
872 if (!transport->smart_options)
873 die("Bug detected: Taking over transport requires non-NULL "
874 "smart_options field.");
875
876 data = xcalloc(1, sizeof(*data));
877 data->options = *transport->smart_options;
878 data->conn = child;
879 data->fd[0] = data->conn->out;
880 data->fd[1] = data->conn->in;
881 data->got_remote_heads = 0;
882 transport->data = data;
883
884 transport->set_option = NULL;
885 transport->get_refs_list = get_refs_via_connect;
886 transport->fetch = fetch_refs_via_pack;
887 transport->push = NULL;
888 transport->push_refs = git_transport_push;
889 transport->disconnect = disconnect_git;
890 transport->smart_options = &(data->options);
891
892 transport->cannot_reuse = 1;
893 }
894
895 static int is_file(const char *url)
896 {
897 struct stat buf;
898 if (stat(url, &buf))
899 return 0;
900 return S_ISREG(buf.st_mode);
901 }
902
903 static int external_specification_len(const char *url)
904 {
905 return strchr(url, ':') - url;
906 }
907
908 struct transport *transport_get(struct remote *remote, const char *url)
909 {
910 const char *helper;
911 struct transport *ret = xcalloc(1, sizeof(*ret));
912
913 ret->progress = isatty(2);
914
915 if (!remote)
916 die("No remote provided to transport_get()");
917
918 ret->got_remote_refs = 0;
919 ret->remote = remote;
920 helper = remote->foreign_vcs;
921
922 if (!url && remote->url)
923 url = remote->url[0];
924 ret->url = url;
925
926 /* maybe it is a foreign URL? */
927 if (url) {
928 const char *p = url;
929
930 while (is_urlschemechar(p == url, *p))
931 p++;
932 if (starts_with(p, "::"))
933 helper = xstrndup(url, p - url);
934 }
935
936 if (helper) {
937 transport_helper_init(ret, helper);
938 } else if (starts_with(url, "rsync:")) {
939 ret->get_refs_list = get_refs_via_rsync;
940 ret->fetch = fetch_objs_via_rsync;
941 ret->push = rsync_transport_push;
942 ret->smart_options = NULL;
943 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
944 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
945 ret->data = data;
946 ret->get_refs_list = get_refs_from_bundle;
947 ret->fetch = fetch_refs_from_bundle;
948 ret->disconnect = close_bundle;
949 ret->smart_options = NULL;
950 } else if (!is_url(url)
951 || starts_with(url, "file://")
952 || starts_with(url, "git://")
953 || starts_with(url, "ssh://")
954 || starts_with(url, "git+ssh://")
955 || starts_with(url, "ssh+git://")) {
956 /* These are builtin smart transports. */
957 struct git_transport_data *data = xcalloc(1, sizeof(*data));
958 ret->data = data;
959 ret->set_option = NULL;
960 ret->get_refs_list = get_refs_via_connect;
961 ret->fetch = fetch_refs_via_pack;
962 ret->push_refs = git_transport_push;
963 ret->connect = connect_git;
964 ret->disconnect = disconnect_git;
965 ret->smart_options = &(data->options);
966
967 data->conn = NULL;
968 data->got_remote_heads = 0;
969 } else {
970 /* Unknown protocol in URL. Pass to external handler. */
971 int len = external_specification_len(url);
972 char *handler = xmalloc(len + 1);
973 handler[len] = 0;
974 strncpy(handler, url, len);
975 transport_helper_init(ret, handler);
976 }
977
978 if (ret->smart_options) {
979 ret->smart_options->thin = 1;
980 ret->smart_options->uploadpack = "git-upload-pack";
981 if (remote->uploadpack)
982 ret->smart_options->uploadpack = remote->uploadpack;
983 ret->smart_options->receivepack = "git-receive-pack";
984 if (remote->receivepack)
985 ret->smart_options->receivepack = remote->receivepack;
986 }
987
988 return ret;
989 }
990
991 int transport_set_option(struct transport *transport,
992 const char *name, const char *value)
993 {
994 int git_reports = 1, protocol_reports = 1;
995
996 if (transport->smart_options)
997 git_reports = set_git_option(transport->smart_options,
998 name, value);
999
1000 if (transport->set_option)
1001 protocol_reports = transport->set_option(transport, name,
1002 value);
1003
1004 /* If either report is 0, report 0 (success). */
1005 if (!git_reports || !protocol_reports)
1006 return 0;
1007 /* If either reports -1 (invalid value), report -1. */
1008 if ((git_reports == -1) || (protocol_reports == -1))
1009 return -1;
1010 /* Otherwise if both report unknown, report unknown. */
1011 return 1;
1012 }
1013
1014 void transport_set_verbosity(struct transport *transport, int verbosity,
1015 int force_progress)
1016 {
1017 if (verbosity >= 1)
1018 transport->verbose = verbosity <= 3 ? verbosity : 3;
1019 if (verbosity < 0)
1020 transport->verbose = -1;
1021
1022 /**
1023 * Rules used to determine whether to report progress (processing aborts
1024 * when a rule is satisfied):
1025 *
1026 * . Report progress, if force_progress is 1 (ie. --progress).
1027 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1028 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1029 * . Report progress if isatty(2) is 1.
1030 **/
1031 if (force_progress >= 0)
1032 transport->progress = !!force_progress;
1033 else
1034 transport->progress = verbosity >= 0 && isatty(2);
1035 }
1036
1037 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1038 {
1039 int i;
1040
1041 fprintf(stderr, "The following submodule paths contain changes that can\n"
1042 "not be found on any remote:\n");
1043 for (i = 0; i < needs_pushing->nr; i++)
1044 printf(" %s\n", needs_pushing->items[i].string);
1045 fprintf(stderr, "\nPlease try\n\n"
1046 " git push --recurse-submodules=on-demand\n\n"
1047 "or cd to the path and use\n\n"
1048 " git push\n\n"
1049 "to push them to a remote.\n\n");
1050
1051 string_list_clear(needs_pushing, 0);
1052
1053 die("Aborting.");
1054 }
1055
1056 static int run_pre_push_hook(struct transport *transport,
1057 struct ref *remote_refs)
1058 {
1059 int ret = 0, x;
1060 struct ref *r;
1061 struct child_process proc = CHILD_PROCESS_INIT;
1062 struct strbuf buf;
1063 const char *argv[4];
1064
1065 if (!(argv[0] = find_hook("pre-push")))
1066 return 0;
1067
1068 argv[1] = transport->remote->name;
1069 argv[2] = transport->url;
1070 argv[3] = NULL;
1071
1072 proc.argv = argv;
1073 proc.in = -1;
1074
1075 if (start_command(&proc)) {
1076 finish_command(&proc);
1077 return -1;
1078 }
1079
1080 strbuf_init(&buf, 256);
1081
1082 for (r = remote_refs; r; r = r->next) {
1083 if (!r->peer_ref) continue;
1084 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1085 if (r->status == REF_STATUS_REJECT_STALE) continue;
1086 if (r->status == REF_STATUS_UPTODATE) continue;
1087
1088 strbuf_reset(&buf);
1089 strbuf_addf( &buf, "%s %s %s %s\n",
1090 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1091 r->name, sha1_to_hex(r->old_sha1));
1092
1093 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1094 ret = -1;
1095 break;
1096 }
1097 }
1098
1099 strbuf_release(&buf);
1100
1101 x = close(proc.in);
1102 if (!ret)
1103 ret = x;
1104
1105 x = finish_command(&proc);
1106 if (!ret)
1107 ret = x;
1108
1109 return ret;
1110 }
1111
1112 int transport_push(struct transport *transport,
1113 int refspec_nr, const char **refspec, int flags,
1114 unsigned int *reject_reasons)
1115 {
1116 *reject_reasons = 0;
1117 transport_verify_remote_names(refspec_nr, refspec);
1118
1119 if (transport->push) {
1120 /* Maybe FIXME. But no important transport uses this case. */
1121 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1122 die("This transport does not support using --set-upstream");
1123
1124 return transport->push(transport, refspec_nr, refspec, flags);
1125 } else if (transport->push_refs) {
1126 struct ref *remote_refs;
1127 struct ref *local_refs = get_local_heads();
1128 int match_flags = MATCH_REFS_NONE;
1129 int verbose = (transport->verbose > 0);
1130 int quiet = (transport->verbose < 0);
1131 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1132 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1133 int push_ret, ret, err;
1134
1135 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1136 return -1;
1137
1138 remote_refs = transport->get_refs_list(transport, 1);
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 = STRING_LIST_INIT_DUP;
1181
1182 for (; ref; ref = ref->next)
1183 if (!is_null_sha1(ref->new_sha1) &&
1184 find_unpushed_submodules(ref->new_sha1,
1185 transport->remote->name, &needs_pushing))
1186 die_with_unpushed_submodules(&needs_pushing);
1187 }
1188
1189 push_ret = transport->push_refs(transport, remote_refs, flags);
1190 err = push_had_errors(remote_refs);
1191 ret = push_ret | err;
1192
1193 if (!quiet || err)
1194 transport_print_push_status(transport->url, remote_refs,
1195 verbose | porcelain, porcelain,
1196 reject_reasons);
1197
1198 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1199 set_upstreams(transport, remote_refs, pretend);
1200
1201 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1202 struct ref *ref;
1203 for (ref = remote_refs; ref; ref = ref->next)
1204 transport_update_tracking_ref(transport->remote, ref, verbose);
1205 }
1206
1207 if (porcelain && !push_ret)
1208 puts("Done");
1209 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1210 fprintf(stderr, "Everything up-to-date\n");
1211
1212 return ret;
1213 }
1214 return 1;
1215 }
1216
1217 const struct ref *transport_get_remote_refs(struct transport *transport)
1218 {
1219 if (!transport->got_remote_refs) {
1220 transport->remote_refs = transport->get_refs_list(transport, 0);
1221 transport->got_remote_refs = 1;
1222 }
1223
1224 return transport->remote_refs;
1225 }
1226
1227 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1228 {
1229 int rc;
1230 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1231 struct ref **heads = NULL;
1232 struct ref *rm;
1233
1234 for (rm = refs; rm; rm = rm->next) {
1235 nr_refs++;
1236 if (rm->peer_ref &&
1237 !is_null_sha1(rm->old_sha1) &&
1238 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1239 continue;
1240 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1241 heads[nr_heads++] = rm;
1242 }
1243
1244 if (!nr_heads) {
1245 /*
1246 * When deepening of a shallow repository is requested,
1247 * then local and remote refs are likely to still be equal.
1248 * Just feed them all to the fetch method in that case.
1249 * This condition shouldn't be met in a non-deepening fetch
1250 * (see builtin/fetch.c:quickfetch()).
1251 */
1252 heads = xmalloc(nr_refs * sizeof(*heads));
1253 for (rm = refs; rm; rm = rm->next)
1254 heads[nr_heads++] = rm;
1255 }
1256
1257 rc = transport->fetch(transport, nr_heads, heads);
1258
1259 free(heads);
1260 return rc;
1261 }
1262
1263 void transport_unlock_pack(struct transport *transport)
1264 {
1265 if (transport->pack_lockfile) {
1266 unlink_or_warn(transport->pack_lockfile);
1267 free(transport->pack_lockfile);
1268 transport->pack_lockfile = NULL;
1269 }
1270 }
1271
1272 int transport_connect(struct transport *transport, const char *name,
1273 const char *exec, int fd[2])
1274 {
1275 if (transport->connect)
1276 return transport->connect(transport, name, exec, fd);
1277 else
1278 die("Operation not supported by protocol");
1279 }
1280
1281 int transport_disconnect(struct transport *transport)
1282 {
1283 int ret = 0;
1284 if (transport->disconnect)
1285 ret = transport->disconnect(transport);
1286 free(transport);
1287 return ret;
1288 }
1289
1290 /*
1291 * Strip username (and password) from a URL and return
1292 * it in a newly allocated string.
1293 */
1294 char *transport_anonymize_url(const char *url)
1295 {
1296 char *anon_url, *scheme_prefix, *anon_part;
1297 size_t anon_len, prefix_len = 0;
1298
1299 anon_part = strchr(url, '@');
1300 if (url_is_local_not_ssh(url) || !anon_part)
1301 goto literal_copy;
1302
1303 anon_len = strlen(++anon_part);
1304 scheme_prefix = strstr(url, "://");
1305 if (!scheme_prefix) {
1306 if (!strchr(anon_part, ':'))
1307 /* cannot be "me@there:/path/name" */
1308 goto literal_copy;
1309 } else {
1310 const char *cp;
1311 /* make sure scheme is reasonable */
1312 for (cp = url; cp < scheme_prefix; cp++) {
1313 switch (*cp) {
1314 /* RFC 1738 2.1 */
1315 case '+': case '.': case '-':
1316 break; /* ok */
1317 default:
1318 if (isalnum(*cp))
1319 break;
1320 /* it isn't */
1321 goto literal_copy;
1322 }
1323 }
1324 /* @ past the first slash does not count */
1325 cp = strchr(scheme_prefix + 3, '/');
1326 if (cp && cp < anon_part)
1327 goto literal_copy;
1328 prefix_len = scheme_prefix - url + 3;
1329 }
1330 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1331 memcpy(anon_url, url, prefix_len);
1332 memcpy(anon_url + prefix_len, anon_part, anon_len);
1333 return anon_url;
1334 literal_copy:
1335 return xstrdup(url);
1336 }
1337
1338 struct alternate_refs_data {
1339 alternate_ref_fn *fn;
1340 void *data;
1341 };
1342
1343 static int refs_from_alternate_cb(struct alternate_object_database *e,
1344 void *data)
1345 {
1346 char *other;
1347 size_t len;
1348 struct remote *remote;
1349 struct transport *transport;
1350 const struct ref *extra;
1351 struct alternate_refs_data *cb = data;
1352
1353 e->name[-1] = '\0';
1354 other = xstrdup(real_path(e->base));
1355 e->name[-1] = '/';
1356 len = strlen(other);
1357
1358 while (other[len-1] == '/')
1359 other[--len] = '\0';
1360 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1361 goto out;
1362 /* Is this a git repository with refs? */
1363 memcpy(other + len - 8, "/refs", 6);
1364 if (!is_directory(other))
1365 goto out;
1366 other[len - 8] = '\0';
1367 remote = remote_get(other);
1368 transport = transport_get(remote, other);
1369 for (extra = transport_get_remote_refs(transport);
1370 extra;
1371 extra = extra->next)
1372 cb->fn(extra, cb->data);
1373 transport_disconnect(transport);
1374 out:
1375 free(other);
1376 return 0;
1377 }
1378
1379 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1380 {
1381 struct alternate_refs_data cb;
1382 cb.fn = fn;
1383 cb.data = data;
1384 foreach_alt_odb(refs_from_alternate_cb, &cb);
1385 }
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