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Sync with 2.1-rc1
[git/jrn.git] / transport.c
blobc25ee7c713a6972913b6a9acc4d7db7e982f5ff1
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;
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 memset(&rsync, 0, sizeof(rsync));
222 rsync.argv = args;
223 rsync.stdout_to_stderr = 1;
224 args[0] = "rsync";
225 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
226 args[2] = buf.buf;
227 args[3] = temp_dir.buf;
228 args[4] = NULL;
229
230 if (run_command(&rsync))
231 die ("Could not run rsync to get refs");
232
233 strbuf_reset(&buf);
234 strbuf_addstr(&buf, rsync_url(transport->url));
235 strbuf_addstr(&buf, "/packed-refs");
236
237 args[2] = buf.buf;
238
239 if (run_command(&rsync))
240 die ("Could not run rsync to get refs");
241
242 /* read the copied refs */
243
244 strbuf_addstr(&temp_dir, "/refs");
245 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
246 strbuf_setlen(&temp_dir, temp_dir_len);
247
248 tail = &dummy;
249 strbuf_addstr(&temp_dir, "/packed-refs");
250 insert_packed_refs(temp_dir.buf, &tail);
251 strbuf_setlen(&temp_dir, temp_dir_len);
252
253 if (remove_dir_recursively(&temp_dir, 0))
254 warning ("Error removing temporary directory %s.",
255 temp_dir.buf);
256
257 strbuf_release(&buf);
258 strbuf_release(&temp_dir);
259
260 return dummy.next;
261 }
262
263 static int fetch_objs_via_rsync(struct transport *transport,
264 int nr_objs, struct ref **to_fetch)
265 {
266 struct child_process rsync;
267
268 memset(&rsync, 0, sizeof(rsync));
269 rsync.stdout_to_stderr = 1;
270 argv_array_push(&rsync.args, "rsync");
271 argv_array_push(&rsync.args, (transport->verbose > 1) ? "-rv" : "-r");
272 argv_array_push(&rsync.args, "--ignore-existing");
273 argv_array_push(&rsync.args, "--exclude");
274 argv_array_push(&rsync.args, "info");
275 argv_array_pushf(&rsync.args, "%s/objects/", rsync_url(transport->url));
276 argv_array_push(&rsync.args, get_object_directory());
277
278 /* NEEDSWORK: handle one level of alternates */
279 return run_command(&rsync);
280 }
281
282 static int write_one_ref(const char *name, const unsigned char *sha1,
283 int flags, void *data)
284 {
285 struct strbuf *buf = data;
286 int len = buf->len;
287
288 /* when called via for_each_ref(), flags is non-zero */
289 if (flags && !starts_with(name, "refs/heads/") &&
290 !starts_with(name, "refs/tags/"))
291 return 0;
292
293 strbuf_addstr(buf, name);
294 if (safe_create_leading_directories(buf->buf) ||
295 write_file(buf->buf, 0, "%s\n", sha1_to_hex(sha1)))
296 return error("problems writing temporary file %s: %s",
297 buf->buf, strerror(errno));
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;
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 memset(&rsync, 0, sizeof(rsync));
340 rsync.argv = args;
341 rsync.stdout_to_stderr = 1;
342 i = 0;
343 args[i++] = "rsync";
344 args[i++] = "-a";
345 if (flags & TRANSPORT_PUSH_DRY_RUN)
346 args[i++] = "--dry-run";
347 if (transport->verbose > 1)
348 args[i++] = "-v";
349 args[i++] = "--ignore-existing";
350 args[i++] = "--exclude";
351 args[i++] = "info";
352 args[i++] = get_object_directory();
353 args[i++] = buf.buf;
354 args[i++] = NULL;
355
356 if (run_command(&rsync))
357 return error("Could not push objects to %s",
358 rsync_url(transport->url));
359
360 /* copy the refs to the temporary directory; they could be packed. */
361
362 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
363 if (!mkdtemp(temp_dir.buf))
364 die_errno ("Could not make temporary directory");
365 strbuf_addch(&temp_dir, '/');
366
367 if (flags & TRANSPORT_PUSH_ALL) {
368 if (for_each_ref(write_one_ref, &temp_dir))
369 return -1;
370 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
371 return -1;
372
373 i = 2;
374 if (flags & TRANSPORT_PUSH_DRY_RUN)
375 args[i++] = "--dry-run";
376 if (!(flags & TRANSPORT_PUSH_FORCE))
377 args[i++] = "--ignore-existing";
378 args[i++] = temp_dir.buf;
379 args[i++] = rsync_url(transport->url);
380 args[i++] = NULL;
381 if (run_command(&rsync))
382 result = error("Could not push to %s",
383 rsync_url(transport->url));
384
385 if (remove_dir_recursively(&temp_dir, 0))
386 warning ("Could not remove temporary directory %s.",
387 temp_dir.buf);
388
389 strbuf_release(&buf);
390 strbuf_release(&temp_dir);
391
392 return result;
393 }
394
395 struct bundle_transport_data {
396 int fd;
397 struct bundle_header header;
398 };
399
400 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
401 {
402 struct bundle_transport_data *data = transport->data;
403 struct ref *result = NULL;
404 int i;
405
406 if (for_push)
407 return NULL;
408
409 if (data->fd > 0)
410 close(data->fd);
411 data->fd = read_bundle_header(transport->url, &data->header);
412 if (data->fd < 0)
413 die ("Could not read bundle '%s'.", transport->url);
414 for (i = 0; i < data->header.references.nr; i++) {
415 struct ref_list_entry *e = data->header.references.list + i;
416 struct ref *ref = alloc_ref(e->name);
417 hashcpy(ref->old_sha1, e->sha1);
418 ref->next = result;
419 result = ref;
420 }
421 return result;
422 }
423
424 static int fetch_refs_from_bundle(struct transport *transport,
425 int nr_heads, struct ref **to_fetch)
426 {
427 struct bundle_transport_data *data = transport->data;
428 return unbundle(&data->header, data->fd,
429 transport->progress ? BUNDLE_VERBOSE : 0);
430 }
431
432 static int close_bundle(struct transport *transport)
433 {
434 struct bundle_transport_data *data = transport->data;
435 if (data->fd > 0)
436 close(data->fd);
437 free(data);
438 return 0;
439 }
440
441 struct git_transport_data {
442 struct git_transport_options options;
443 struct child_process *conn;
444 int fd[2];
445 unsigned got_remote_heads : 1;
446 struct sha1_array extra_have;
447 struct sha1_array shallow;
448 };
449
450 static int set_git_option(struct git_transport_options *opts,
451 const char *name, const char *value)
452 {
453 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
454 opts->uploadpack = value;
455 return 0;
456 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
457 opts->receivepack = value;
458 return 0;
459 } else if (!strcmp(name, TRANS_OPT_THIN)) {
460 opts->thin = !!value;
461 return 0;
462 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
463 opts->followtags = !!value;
464 return 0;
465 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
466 opts->keep = !!value;
467 return 0;
468 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
469 opts->update_shallow = !!value;
470 return 0;
471 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
472 if (!value)
473 opts->depth = 0;
474 else {
475 char *end;
476 opts->depth = strtol(value, &end, 0);
477 if (*end)
478 die("transport: invalid depth option '%s'", value);
479 }
480 return 0;
481 }
482 return 1;
483 }
484
485 static int connect_setup(struct transport *transport, int for_push, int verbose)
486 {
487 struct git_transport_data *data = transport->data;
488
489 if (data->conn)
490 return 0;
491
492 data->conn = git_connect(data->fd, transport->url,
493 for_push ? data->options.receivepack :
494 data->options.uploadpack,
495 verbose ? CONNECT_VERBOSE : 0);
496
497 return 0;
498 }
499
500 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
501 {
502 struct git_transport_data *data = transport->data;
503 struct ref *refs;
504
505 connect_setup(transport, for_push, 0);
506 get_remote_heads(data->fd[0], NULL, 0, &refs,
507 for_push ? REF_NORMAL : 0,
508 &data->extra_have,
509 &data->shallow);
510 data->got_remote_heads = 1;
511
512 return refs;
513 }
514
515 static int fetch_refs_via_pack(struct transport *transport,
516 int nr_heads, struct ref **to_fetch)
517 {
518 struct git_transport_data *data = transport->data;
519 const struct ref *refs;
520 char *dest = xstrdup(transport->url);
521 struct fetch_pack_args args;
522 struct ref *refs_tmp = NULL;
523
524 memset(&args, 0, sizeof(args));
525 args.uploadpack = data->options.uploadpack;
526 args.keep_pack = data->options.keep;
527 args.lock_pack = 1;
528 args.use_thin_pack = data->options.thin;
529 args.include_tag = data->options.followtags;
530 args.verbose = (transport->verbose > 1);
531 args.quiet = (transport->verbose < 0);
532 args.no_progress = !transport->progress;
533 args.depth = data->options.depth;
534 args.check_self_contained_and_connected =
535 data->options.check_self_contained_and_connected;
536 args.cloning = transport->cloning;
537 args.update_shallow = data->options.update_shallow;
538
539 if (!data->got_remote_heads) {
540 connect_setup(transport, 0, 0);
541 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
542 NULL, &data->shallow);
543 data->got_remote_heads = 1;
544 }
545
546 refs = fetch_pack(&args, data->fd, data->conn,
547 refs_tmp ? refs_tmp : transport->remote_refs,
548 dest, to_fetch, nr_heads, &data->shallow,
549 &transport->pack_lockfile);
550 close(data->fd[0]);
551 close(data->fd[1]);
552 if (finish_connect(data->conn))
553 refs = NULL;
554 data->conn = NULL;
555 data->got_remote_heads = 0;
556 data->options.self_contained_and_connected =
557 args.self_contained_and_connected;
558
559 free_refs(refs_tmp);
560
561 free(dest);
562 return (refs ? 0 : -1);
563 }
564
565 static int push_had_errors(struct ref *ref)
566 {
567 for (; ref; ref = ref->next) {
568 switch (ref->status) {
569 case REF_STATUS_NONE:
570 case REF_STATUS_UPTODATE:
571 case REF_STATUS_OK:
572 break;
573 default:
574 return 1;
575 }
576 }
577 return 0;
578 }
579
580 int transport_refs_pushed(struct ref *ref)
581 {
582 for (; ref; ref = ref->next) {
583 switch(ref->status) {
584 case REF_STATUS_NONE:
585 case REF_STATUS_UPTODATE:
586 break;
587 default:
588 return 1;
589 }
590 }
591 return 0;
592 }
593
594 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
595 {
596 struct refspec rs;
597
598 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
599 return;
600
601 rs.src = ref->name;
602 rs.dst = NULL;
603
604 if (!remote_find_tracking(remote, &rs)) {
605 if (verbose)
606 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
607 if (ref->deletion) {
608 delete_ref(rs.dst, NULL, 0);
609 } else
610 update_ref("update by push", rs.dst,
611 ref->new_sha1, NULL, 0, 0);
612 free(rs.dst);
613 }
614 }
615
616 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
617 {
618 if (porcelain) {
619 if (from)
620 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
621 else
622 fprintf(stdout, "%c\t:%s\t", flag, to->name);
623 if (msg)
624 fprintf(stdout, "%s (%s)\n", summary, msg);
625 else
626 fprintf(stdout, "%s\n", summary);
627 } else {
628 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
629 if (from)
630 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
631 else
632 fputs(prettify_refname(to->name), stderr);
633 if (msg) {
634 fputs(" (", stderr);
635 fputs(msg, stderr);
636 fputc(')', stderr);
637 }
638 fputc('\n', stderr);
639 }
640 }
641
642 static const char *status_abbrev(unsigned char sha1[20])
643 {
644 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
645 }
646
647 static void print_ok_ref_status(struct ref *ref, int porcelain)
648 {
649 if (ref->deletion)
650 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
651 else if (is_null_sha1(ref->old_sha1))
652 print_ref_status('*',
653 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
654 "[new branch]"),
655 ref, ref->peer_ref, NULL, porcelain);
656 else {
657 char quickref[84];
658 char type;
659 const char *msg;
660
661 strcpy(quickref, status_abbrev(ref->old_sha1));
662 if (ref->forced_update) {
663 strcat(quickref, "...");
664 type = '+';
665 msg = "forced update";
666 } else {
667 strcat(quickref, "..");
668 type = ' ';
669 msg = NULL;
670 }
671 strcat(quickref, status_abbrev(ref->new_sha1));
672
673 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
674 }
675 }
676
677 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
678 {
679 if (!count)
680 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
681
682 switch(ref->status) {
683 case REF_STATUS_NONE:
684 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
685 break;
686 case REF_STATUS_REJECT_NODELETE:
687 print_ref_status('!', "[rejected]", ref, NULL,
688 "remote does not support deleting refs", porcelain);
689 break;
690 case REF_STATUS_UPTODATE:
691 print_ref_status('=', "[up to date]", ref,
692 ref->peer_ref, NULL, porcelain);
693 break;
694 case REF_STATUS_REJECT_NONFASTFORWARD:
695 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
696 "non-fast-forward", porcelain);
697 break;
698 case REF_STATUS_REJECT_ALREADY_EXISTS:
699 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
700 "already exists", porcelain);
701 break;
702 case REF_STATUS_REJECT_FETCH_FIRST:
703 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
704 "fetch first", porcelain);
705 break;
706 case REF_STATUS_REJECT_NEEDS_FORCE:
707 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
708 "needs force", porcelain);
709 break;
710 case REF_STATUS_REJECT_STALE:
711 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
712 "stale info", porcelain);
713 break;
714 case REF_STATUS_REJECT_SHALLOW:
715 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
716 "new shallow roots not allowed", 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,
811 NULL, &data->shallow);
812 data->got_remote_heads = 1;
813 }
814
815 memset(&args, 0, sizeof(args));
816 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
817 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
818 args.use_thin_pack = data->options.thin;
819 args.verbose = (transport->verbose > 0);
820 args.quiet = (transport->verbose < 0);
821 args.progress = transport->progress;
822 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
823 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
824
825 ret = send_pack(&args, data->fd, data->conn, remote_refs,
826 &data->extra_have);
827
828 close(data->fd[1]);
829 close(data->fd[0]);
830 ret |= finish_connect(data->conn);
831 data->conn = NULL;
832 data->got_remote_heads = 0;
833
834 return ret;
835 }
836
837 static int connect_git(struct transport *transport, const char *name,
838 const char *executable, int fd[2])
839 {
840 struct git_transport_data *data = transport->data;
841 data->conn = git_connect(data->fd, transport->url,
842 executable, 0);
843 fd[0] = data->fd[0];
844 fd[1] = data->fd[1];
845 return 0;
846 }
847
848 static int disconnect_git(struct transport *transport)
849 {
850 struct git_transport_data *data = transport->data;
851 if (data->conn) {
852 if (data->got_remote_heads)
853 packet_flush(data->fd[1]);
854 close(data->fd[0]);
855 close(data->fd[1]);
856 finish_connect(data->conn);
857 }
858
859 free(data);
860 return 0;
861 }
862
863 void transport_take_over(struct transport *transport,
864 struct child_process *child)
865 {
866 struct git_transport_data *data;
867
868 if (!transport->smart_options)
869 die("Bug detected: Taking over transport requires non-NULL "
870 "smart_options field.");
871
872 data = xcalloc(1, sizeof(*data));
873 data->options = *transport->smart_options;
874 data->conn = child;
875 data->fd[0] = data->conn->out;
876 data->fd[1] = data->conn->in;
877 data->got_remote_heads = 0;
878 transport->data = data;
879
880 transport->set_option = NULL;
881 transport->get_refs_list = get_refs_via_connect;
882 transport->fetch = fetch_refs_via_pack;
883 transport->push = NULL;
884 transport->push_refs = git_transport_push;
885 transport->disconnect = disconnect_git;
886 transport->smart_options = &(data->options);
887
888 transport->cannot_reuse = 1;
889 }
890
891 static int is_file(const char *url)
892 {
893 struct stat buf;
894 if (stat(url, &buf))
895 return 0;
896 return S_ISREG(buf.st_mode);
897 }
898
899 static int external_specification_len(const char *url)
900 {
901 return strchr(url, ':') - url;
902 }
903
904 struct transport *transport_get(struct remote *remote, const char *url)
905 {
906 const char *helper;
907 struct transport *ret = xcalloc(1, sizeof(*ret));
908
909 ret->progress = isatty(2);
910
911 if (!remote)
912 die("No remote provided to transport_get()");
913
914 ret->got_remote_refs = 0;
915 ret->remote = remote;
916 helper = remote->foreign_vcs;
917
918 if (!url && remote->url)
919 url = remote->url[0];
920 ret->url = url;
921
922 /* maybe it is a foreign URL? */
923 if (url) {
924 const char *p = url;
925
926 while (is_urlschemechar(p == url, *p))
927 p++;
928 if (starts_with(p, "::"))
929 helper = xstrndup(url, p - url);
930 }
931
932 if (helper) {
933 transport_helper_init(ret, helper);
934 } else if (starts_with(url, "rsync:")) {
935 ret->get_refs_list = get_refs_via_rsync;
936 ret->fetch = fetch_objs_via_rsync;
937 ret->push = rsync_transport_push;
938 ret->smart_options = NULL;
939 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
940 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
941 ret->data = data;
942 ret->get_refs_list = get_refs_from_bundle;
943 ret->fetch = fetch_refs_from_bundle;
944 ret->disconnect = close_bundle;
945 ret->smart_options = NULL;
946 } else if (!is_url(url)
947 || starts_with(url, "file://")
948 || starts_with(url, "git://")
949 || starts_with(url, "ssh://")
950 || starts_with(url, "git+ssh://")
951 || starts_with(url, "ssh+git://")) {
952 /* These are builtin smart transports. */
953 struct git_transport_data *data = xcalloc(1, sizeof(*data));
954 ret->data = data;
955 ret->set_option = NULL;
956 ret->get_refs_list = get_refs_via_connect;
957 ret->fetch = fetch_refs_via_pack;
958 ret->push_refs = git_transport_push;
959 ret->connect = connect_git;
960 ret->disconnect = disconnect_git;
961 ret->smart_options = &(data->options);
962
963 data->conn = NULL;
964 data->got_remote_heads = 0;
965 } else {
966 /* Unknown protocol in URL. Pass to external handler. */
967 int len = external_specification_len(url);
968 char *handler = xmalloc(len + 1);
969 handler[len] = 0;
970 strncpy(handler, url, len);
971 transport_helper_init(ret, handler);
972 }
973
974 if (ret->smart_options) {
975 ret->smart_options->thin = 1;
976 ret->smart_options->uploadpack = "git-upload-pack";
977 if (remote->uploadpack)
978 ret->smart_options->uploadpack = remote->uploadpack;
979 ret->smart_options->receivepack = "git-receive-pack";
980 if (remote->receivepack)
981 ret->smart_options->receivepack = remote->receivepack;
982 }
983
984 return ret;
985 }
986
987 int transport_set_option(struct transport *transport,
988 const char *name, const char *value)
989 {
990 int git_reports = 1, protocol_reports = 1;
991
992 if (transport->smart_options)
993 git_reports = set_git_option(transport->smart_options,
994 name, value);
995
996 if (transport->set_option)
997 protocol_reports = transport->set_option(transport, name,
998 value);
999
1000 /* If either report is 0, report 0 (success). */
1001 if (!git_reports || !protocol_reports)
1002 return 0;
1003 /* If either reports -1 (invalid value), report -1. */
1004 if ((git_reports == -1) || (protocol_reports == -1))
1005 return -1;
1006 /* Otherwise if both report unknown, report unknown. */
1007 return 1;
1008 }
1009
1010 void transport_set_verbosity(struct transport *transport, int verbosity,
1011 int force_progress)
1012 {
1013 if (verbosity >= 1)
1014 transport->verbose = verbosity <= 3 ? verbosity : 3;
1015 if (verbosity < 0)
1016 transport->verbose = -1;
1017
1018 /**
1019 * Rules used to determine whether to report progress (processing aborts
1020 * when a rule is satisfied):
1021 *
1022 * . Report progress, if force_progress is 1 (ie. --progress).
1023 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1024 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1025 * . Report progress if isatty(2) is 1.
1026 **/
1027 if (force_progress >= 0)
1028 transport->progress = !!force_progress;
1029 else
1030 transport->progress = verbosity >= 0 && isatty(2);
1031 }
1032
1033 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1034 {
1035 int i;
1036
1037 fprintf(stderr, "The following submodule paths contain changes that can\n"
1038 "not be found on any remote:\n");
1039 for (i = 0; i < needs_pushing->nr; i++)
1040 printf(" %s\n", needs_pushing->items[i].string);
1041 fprintf(stderr, "\nPlease try\n\n"
1042 " git push --recurse-submodules=on-demand\n\n"
1043 "or cd to the path and use\n\n"
1044 " git push\n\n"
1045 "to push them to a remote.\n\n");
1046
1047 string_list_clear(needs_pushing, 0);
1048
1049 die("Aborting.");
1050 }
1051
1052 static int run_pre_push_hook(struct transport *transport,
1053 struct ref *remote_refs)
1054 {
1055 int ret = 0, x;
1056 struct ref *r;
1057 struct child_process proc;
1058 struct strbuf buf;
1059 const char *argv[4];
1060
1061 if (!(argv[0] = find_hook("pre-push")))
1062 return 0;
1063
1064 argv[1] = transport->remote->name;
1065 argv[2] = transport->url;
1066 argv[3] = NULL;
1067
1068 memset(&proc, 0, sizeof(proc));
1069 proc.argv = argv;
1070 proc.in = -1;
1071
1072 if (start_command(&proc)) {
1073 finish_command(&proc);
1074 return -1;
1075 }
1076
1077 strbuf_init(&buf, 256);
1078
1079 for (r = remote_refs; r; r = r->next) {
1080 if (!r->peer_ref) continue;
1081 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1082 if (r->status == REF_STATUS_REJECT_STALE) continue;
1083 if (r->status == REF_STATUS_UPTODATE) continue;
1084
1085 strbuf_reset(&buf);
1086 strbuf_addf( &buf, "%s %s %s %s\n",
1087 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1088 r->name, sha1_to_hex(r->old_sha1));
1089
1090 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1091 ret = -1;
1092 break;
1093 }
1094 }
1095
1096 strbuf_release(&buf);
1097
1098 x = close(proc.in);
1099 if (!ret)
1100 ret = x;
1101
1102 x = finish_command(&proc);
1103 if (!ret)
1104 ret = x;
1105
1106 return ret;
1107 }
1108
1109 int transport_push(struct transport *transport,
1110 int refspec_nr, const char **refspec, int flags,
1111 unsigned int *reject_reasons)
1112 {
1113 *reject_reasons = 0;
1114 transport_verify_remote_names(refspec_nr, refspec);
1115
1116 if (transport->push) {
1117 /* Maybe FIXME. But no important transport uses this case. */
1118 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1119 die("This transport does not support using --set-upstream");
1120
1121 return transport->push(transport, refspec_nr, refspec, flags);
1122 } else if (transport->push_refs) {
1123 struct ref *remote_refs;
1124 struct ref *local_refs = get_local_heads();
1125 int match_flags = MATCH_REFS_NONE;
1126 int verbose = (transport->verbose > 0);
1127 int quiet = (transport->verbose < 0);
1128 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1129 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1130 int push_ret, ret, err;
1131
1132 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1133 return -1;
1134
1135 remote_refs = transport->get_refs_list(transport, 1);
1136
1137 if (flags & TRANSPORT_PUSH_ALL)
1138 match_flags |= MATCH_REFS_ALL;
1139 if (flags & TRANSPORT_PUSH_MIRROR)
1140 match_flags |= MATCH_REFS_MIRROR;
1141 if (flags & TRANSPORT_PUSH_PRUNE)
1142 match_flags |= MATCH_REFS_PRUNE;
1143 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1144 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1145
1146 if (match_push_refs(local_refs, &remote_refs,
1147 refspec_nr, refspec, match_flags)) {
1148 return -1;
1149 }
1150
1151 if (transport->smart_options &&
1152 transport->smart_options->cas &&
1153 !is_empty_cas(transport->smart_options->cas))
1154 apply_push_cas(transport->smart_options->cas,
1155 transport->remote, remote_refs);
1156
1157 set_ref_status_for_push(remote_refs,
1158 flags & TRANSPORT_PUSH_MIRROR,
1159 flags & TRANSPORT_PUSH_FORCE);
1160
1161 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1162 if (run_pre_push_hook(transport, remote_refs))
1163 return -1;
1164
1165 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1166 struct ref *ref = remote_refs;
1167 for (; ref; ref = ref->next)
1168 if (!is_null_sha1(ref->new_sha1) &&
1169 !push_unpushed_submodules(ref->new_sha1,
1170 transport->remote->name))
1171 die ("Failed to push all needed submodules!");
1172 }
1173
1174 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1175 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1176 struct ref *ref = remote_refs;
1177 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1178
1179 for (; ref; ref = ref->next)
1180 if (!is_null_sha1(ref->new_sha1) &&
1181 find_unpushed_submodules(ref->new_sha1,
1182 transport->remote->name, &needs_pushing))
1183 die_with_unpushed_submodules(&needs_pushing);
1184 }
1185
1186 push_ret = transport->push_refs(transport, remote_refs, flags);
1187 err = push_had_errors(remote_refs);
1188 ret = push_ret | err;
1189
1190 if (!quiet || err)
1191 transport_print_push_status(transport->url, remote_refs,
1192 verbose | porcelain, porcelain,
1193 reject_reasons);
1194
1195 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1196 set_upstreams(transport, remote_refs, pretend);
1197
1198 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1199 struct ref *ref;
1200 for (ref = remote_refs; ref; ref = ref->next)
1201 transport_update_tracking_ref(transport->remote, ref, verbose);
1202 }
1203
1204 if (porcelain && !push_ret)
1205 puts("Done");
1206 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1207 fprintf(stderr, "Everything up-to-date\n");
1208
1209 return ret;
1210 }
1211 return 1;
1212 }
1213
1214 const struct ref *transport_get_remote_refs(struct transport *transport)
1215 {
1216 if (!transport->got_remote_refs) {
1217 transport->remote_refs = transport->get_refs_list(transport, 0);
1218 transport->got_remote_refs = 1;
1219 }
1220
1221 return transport->remote_refs;
1222 }
1223
1224 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1225 {
1226 int rc;
1227 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1228 struct ref **heads = NULL;
1229 struct ref *rm;
1230
1231 for (rm = refs; rm; rm = rm->next) {
1232 nr_refs++;
1233 if (rm->peer_ref &&
1234 !is_null_sha1(rm->old_sha1) &&
1235 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1236 continue;
1237 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1238 heads[nr_heads++] = rm;
1239 }
1240
1241 if (!nr_heads) {
1242 /*
1243 * When deepening of a shallow repository is requested,
1244 * then local and remote refs are likely to still be equal.
1245 * Just feed them all to the fetch method in that case.
1246 * This condition shouldn't be met in a non-deepening fetch
1247 * (see builtin/fetch.c:quickfetch()).
1248 */
1249 heads = xmalloc(nr_refs * sizeof(*heads));
1250 for (rm = refs; rm; rm = rm->next)
1251 heads[nr_heads++] = rm;
1252 }
1253
1254 rc = transport->fetch(transport, nr_heads, heads);
1255
1256 free(heads);
1257 return rc;
1258 }
1259
1260 void transport_unlock_pack(struct transport *transport)
1261 {
1262 if (transport->pack_lockfile) {
1263 unlink_or_warn(transport->pack_lockfile);
1264 free(transport->pack_lockfile);
1265 transport->pack_lockfile = NULL;
1266 }
1267 }
1268
1269 int transport_connect(struct transport *transport, const char *name,
1270 const char *exec, int fd[2])
1271 {
1272 if (transport->connect)
1273 return transport->connect(transport, name, exec, fd);
1274 else
1275 die("Operation not supported by protocol");
1276 }
1277
1278 int transport_disconnect(struct transport *transport)
1279 {
1280 int ret = 0;
1281 if (transport->disconnect)
1282 ret = transport->disconnect(transport);
1283 free(transport);
1284 return ret;
1285 }
1286
1287 /*
1288 * Strip username (and password) from a URL and return
1289 * it in a newly allocated string.
1290 */
1291 char *transport_anonymize_url(const char *url)
1292 {
1293 char *anon_url, *scheme_prefix, *anon_part;
1294 size_t anon_len, prefix_len = 0;
1295
1296 anon_part = strchr(url, '@');
1297 if (url_is_local_not_ssh(url) || !anon_part)
1298 goto literal_copy;
1299
1300 anon_len = strlen(++anon_part);
1301 scheme_prefix = strstr(url, "://");
1302 if (!scheme_prefix) {
1303 if (!strchr(anon_part, ':'))
1304 /* cannot be "me@there:/path/name" */
1305 goto literal_copy;
1306 } else {
1307 const char *cp;
1308 /* make sure scheme is reasonable */
1309 for (cp = url; cp < scheme_prefix; cp++) {
1310 switch (*cp) {
1311 /* RFC 1738 2.1 */
1312 case '+': case '.': case '-':
1313 break; /* ok */
1314 default:
1315 if (isalnum(*cp))
1316 break;
1317 /* it isn't */
1318 goto literal_copy;
1319 }
1320 }
1321 /* @ past the first slash does not count */
1322 cp = strchr(scheme_prefix + 3, '/');
1323 if (cp && cp < anon_part)
1324 goto literal_copy;
1325 prefix_len = scheme_prefix - url + 3;
1326 }
1327 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1328 memcpy(anon_url, url, prefix_len);
1329 memcpy(anon_url + prefix_len, anon_part, anon_len);
1330 return anon_url;
1331 literal_copy:
1332 return xstrdup(url);
1333 }
1334
1335 struct alternate_refs_data {
1336 alternate_ref_fn *fn;
1337 void *data;
1338 };
1339
1340 static int refs_from_alternate_cb(struct alternate_object_database *e,
1341 void *data)
1342 {
1343 char *other;
1344 size_t len;
1345 struct remote *remote;
1346 struct transport *transport;
1347 const struct ref *extra;
1348 struct alternate_refs_data *cb = data;
1349
1350 e->name[-1] = '\0';
1351 other = xstrdup(real_path(e->base));
1352 e->name[-1] = '/';
1353 len = strlen(other);
1354
1355 while (other[len-1] == '/')
1356 other[--len] = '\0';
1357 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1358 goto out;
1359 /* Is this a git repository with refs? */
1360 memcpy(other + len - 8, "/refs", 6);
1361 if (!is_directory(other))
1362 goto out;
1363 other[len - 8] = '\0';
1364 remote = remote_get(other);
1365 transport = transport_get(remote, other);
1366 for (extra = transport_get_remote_refs(transport);
1367 extra;
1368 extra = extra->next)
1369 cb->fn(extra, cb->data);
1370 transport_disconnect(transport);
1371 out:
1372 free(other);
1373 return 0;
1374 }
1375
1376 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1377 {
1378 struct alternate_refs_data cb;
1379 cb.fn = fn;
1380 cb.data = data;
1381 foreach_alt_odb(refs_from_alternate_cb, &cb);
1382 }
Jonathan Nieder’s miscellaneous git branches