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trailer: add interpret-trailers command
[alt-git.git] / transport.c
blob7388bb87dae96514801bcd604b74d31f54955f9a
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 }
481 return 1;
482 }
483
484 static int connect_setup(struct transport *transport, int for_push, int verbose)
485 {
486 struct git_transport_data *data = transport->data;
487
488 if (data->conn)
489 return 0;
490
491 data->conn = git_connect(data->fd, transport->url,
492 for_push ? data->options.receivepack :
493 data->options.uploadpack,
494 verbose ? CONNECT_VERBOSE : 0);
495
496 return 0;
497 }
498
499 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
500 {
501 struct git_transport_data *data = transport->data;
502 struct ref *refs;
503
504 connect_setup(transport, for_push, 0);
505 get_remote_heads(data->fd[0], NULL, 0, &refs,
506 for_push ? REF_NORMAL : 0,
507 &data->extra_have,
508 &data->shallow);
509 data->got_remote_heads = 1;
510
511 return refs;
512 }
513
514 static int fetch_refs_via_pack(struct transport *transport,
515 int nr_heads, struct ref **to_fetch)
516 {
517 struct git_transport_data *data = transport->data;
518 const struct ref *refs;
519 char *dest = xstrdup(transport->url);
520 struct fetch_pack_args args;
521 struct ref *refs_tmp = NULL;
522
523 memset(&args, 0, sizeof(args));
524 args.uploadpack = data->options.uploadpack;
525 args.keep_pack = data->options.keep;
526 args.lock_pack = 1;
527 args.use_thin_pack = data->options.thin;
528 args.include_tag = data->options.followtags;
529 args.verbose = (transport->verbose > 1);
530 args.quiet = (transport->verbose < 0);
531 args.no_progress = !transport->progress;
532 args.depth = data->options.depth;
533 args.check_self_contained_and_connected =
534 data->options.check_self_contained_and_connected;
535 args.cloning = transport->cloning;
536 args.update_shallow = data->options.update_shallow;
537
538 if (!data->got_remote_heads) {
539 connect_setup(transport, 0, 0);
540 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
541 NULL, &data->shallow);
542 data->got_remote_heads = 1;
543 }
544
545 refs = fetch_pack(&args, data->fd, data->conn,
546 refs_tmp ? refs_tmp : transport->remote_refs,
547 dest, to_fetch, nr_heads, &data->shallow,
548 &transport->pack_lockfile);
549 close(data->fd[0]);
550 close(data->fd[1]);
551 if (finish_connect(data->conn))
552 refs = NULL;
553 data->conn = NULL;
554 data->got_remote_heads = 0;
555 data->options.self_contained_and_connected =
556 args.self_contained_and_connected;
557
558 free_refs(refs_tmp);
559
560 free(dest);
561 return (refs ? 0 : -1);
562 }
563
564 static int push_had_errors(struct ref *ref)
565 {
566 for (; ref; ref = ref->next) {
567 switch (ref->status) {
568 case REF_STATUS_NONE:
569 case REF_STATUS_UPTODATE:
570 case REF_STATUS_OK:
571 break;
572 default:
573 return 1;
574 }
575 }
576 return 0;
577 }
578
579 int transport_refs_pushed(struct ref *ref)
580 {
581 for (; ref; ref = ref->next) {
582 switch(ref->status) {
583 case REF_STATUS_NONE:
584 case REF_STATUS_UPTODATE:
585 break;
586 default:
587 return 1;
588 }
589 }
590 return 0;
591 }
592
593 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
594 {
595 struct refspec rs;
596
597 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
598 return;
599
600 rs.src = ref->name;
601 rs.dst = NULL;
602
603 if (!remote_find_tracking(remote, &rs)) {
604 if (verbose)
605 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
606 if (ref->deletion) {
607 delete_ref(rs.dst, NULL, 0);
608 } else
609 update_ref("update by push", rs.dst,
610 ref->new_sha1, NULL, 0, 0);
611 free(rs.dst);
612 }
613 }
614
615 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
616 {
617 if (porcelain) {
618 if (from)
619 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
620 else
621 fprintf(stdout, "%c\t:%s\t", flag, to->name);
622 if (msg)
623 fprintf(stdout, "%s (%s)\n", summary, msg);
624 else
625 fprintf(stdout, "%s\n", summary);
626 } else {
627 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
628 if (from)
629 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
630 else
631 fputs(prettify_refname(to->name), stderr);
632 if (msg) {
633 fputs(" (", stderr);
634 fputs(msg, stderr);
635 fputc(')', stderr);
636 }
637 fputc('\n', stderr);
638 }
639 }
640
641 static const char *status_abbrev(unsigned char sha1[20])
642 {
643 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
644 }
645
646 static void print_ok_ref_status(struct ref *ref, int porcelain)
647 {
648 if (ref->deletion)
649 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
650 else if (is_null_sha1(ref->old_sha1))
651 print_ref_status('*',
652 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
653 "[new branch]"),
654 ref, ref->peer_ref, NULL, porcelain);
655 else {
656 char quickref[84];
657 char type;
658 const char *msg;
659
660 strcpy(quickref, status_abbrev(ref->old_sha1));
661 if (ref->forced_update) {
662 strcat(quickref, "...");
663 type = '+';
664 msg = "forced update";
665 } else {
666 strcat(quickref, "..");
667 type = ' ';
668 msg = NULL;
669 }
670 strcat(quickref, status_abbrev(ref->new_sha1));
671
672 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
673 }
674 }
675
676 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
677 {
678 if (!count)
679 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
680
681 switch(ref->status) {
682 case REF_STATUS_NONE:
683 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
684 break;
685 case REF_STATUS_REJECT_NODELETE:
686 print_ref_status('!', "[rejected]", ref, NULL,
687 "remote does not support deleting refs", porcelain);
688 break;
689 case REF_STATUS_UPTODATE:
690 print_ref_status('=', "[up to date]", ref,
691 ref->peer_ref, NULL, porcelain);
692 break;
693 case REF_STATUS_REJECT_NONFASTFORWARD:
694 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
695 "non-fast-forward", porcelain);
696 break;
697 case REF_STATUS_REJECT_ALREADY_EXISTS:
698 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
699 "already exists", porcelain);
700 break;
701 case REF_STATUS_REJECT_FETCH_FIRST:
702 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
703 "fetch first", porcelain);
704 break;
705 case REF_STATUS_REJECT_NEEDS_FORCE:
706 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
707 "needs force", porcelain);
708 break;
709 case REF_STATUS_REJECT_STALE:
710 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
711 "stale info", porcelain);
712 break;
713 case REF_STATUS_REJECT_SHALLOW:
714 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
715 "new shallow roots not allowed", porcelain);
716 break;
717 case REF_STATUS_REMOTE_REJECT:
718 print_ref_status('!', "[remote rejected]", ref,
719 ref->deletion ? NULL : ref->peer_ref,
720 ref->remote_status, porcelain);
721 break;
722 case REF_STATUS_EXPECTING_REPORT:
723 print_ref_status('!', "[remote failure]", ref,
724 ref->deletion ? NULL : ref->peer_ref,
725 "remote failed to report status", porcelain);
726 break;
727 case REF_STATUS_OK:
728 print_ok_ref_status(ref, porcelain);
729 break;
730 }
731
732 return 1;
733 }
734
735 void transport_print_push_status(const char *dest, struct ref *refs,
736 int verbose, int porcelain, unsigned int *reject_reasons)
737 {
738 struct ref *ref;
739 int n = 0;
740 unsigned char head_sha1[20];
741 char *head;
742
743 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
744
745 if (verbose) {
746 for (ref = refs; ref; ref = ref->next)
747 if (ref->status == REF_STATUS_UPTODATE)
748 n += print_one_push_status(ref, dest, n, porcelain);
749 }
750
751 for (ref = refs; ref; ref = ref->next)
752 if (ref->status == REF_STATUS_OK)
753 n += print_one_push_status(ref, dest, n, porcelain);
754
755 *reject_reasons = 0;
756 for (ref = refs; ref; ref = ref->next) {
757 if (ref->status != REF_STATUS_NONE &&
758 ref->status != REF_STATUS_UPTODATE &&
759 ref->status != REF_STATUS_OK)
760 n += print_one_push_status(ref, dest, n, porcelain);
761 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
762 if (head != NULL && !strcmp(head, ref->name))
763 *reject_reasons |= REJECT_NON_FF_HEAD;
764 else
765 *reject_reasons |= REJECT_NON_FF_OTHER;
766 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
767 *reject_reasons |= REJECT_ALREADY_EXISTS;
768 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
769 *reject_reasons |= REJECT_FETCH_FIRST;
770 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
771 *reject_reasons |= REJECT_NEEDS_FORCE;
772 }
773 }
774 }
775
776 void transport_verify_remote_names(int nr_heads, const char **heads)
777 {
778 int i;
779
780 for (i = 0; i < nr_heads; i++) {
781 const char *local = heads[i];
782 const char *remote = strrchr(heads[i], ':');
783
784 if (*local == '+')
785 local++;
786
787 /* A matching refspec is okay. */
788 if (remote == local && remote[1] == '\0')
789 continue;
790
791 remote = remote ? (remote + 1) : local;
792 if (check_refname_format(remote,
793 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
794 die("remote part of refspec is not a valid name in %s",
795 heads[i]);
796 }
797 }
798
799 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
800 {
801 struct git_transport_data *data = transport->data;
802 struct send_pack_args args;
803 int ret;
804
805 if (!data->got_remote_heads) {
806 struct ref *tmp_refs;
807 connect_setup(transport, 1, 0);
808
809 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
810 NULL, &data->shallow);
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_file(const char *url)
891 {
892 struct stat buf;
893 if (stat(url, &buf))
894 return 0;
895 return S_ISREG(buf.st_mode);
896 }
897
898 static int external_specification_len(const char *url)
899 {
900 return strchr(url, ':') - url;
901 }
902
903 struct transport *transport_get(struct remote *remote, const char *url)
904 {
905 const char *helper;
906 struct transport *ret = xcalloc(1, sizeof(*ret));
907
908 ret->progress = isatty(2);
909
910 if (!remote)
911 die("No remote provided to transport_get()");
912
913 ret->got_remote_refs = 0;
914 ret->remote = remote;
915 helper = remote->foreign_vcs;
916
917 if (!url && remote->url)
918 url = remote->url[0];
919 ret->url = url;
920
921 /* maybe it is a foreign URL? */
922 if (url) {
923 const char *p = url;
924
925 while (is_urlschemechar(p == url, *p))
926 p++;
927 if (starts_with(p, "::"))
928 helper = xstrndup(url, p - url);
929 }
930
931 if (helper) {
932 transport_helper_init(ret, helper);
933 } else if (starts_with(url, "rsync:")) {
934 ret->get_refs_list = get_refs_via_rsync;
935 ret->fetch = fetch_objs_via_rsync;
936 ret->push = rsync_transport_push;
937 ret->smart_options = NULL;
938 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
939 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
940 ret->data = data;
941 ret->get_refs_list = get_refs_from_bundle;
942 ret->fetch = fetch_refs_from_bundle;
943 ret->disconnect = close_bundle;
944 ret->smart_options = NULL;
945 } else if (!is_url(url)
946 || starts_with(url, "file://")
947 || starts_with(url, "git://")
948 || starts_with(url, "ssh://")
949 || starts_with(url, "git+ssh://")
950 || starts_with(url, "ssh+git://")) {
951 /* These are builtin smart transports. */
952 struct git_transport_data *data = xcalloc(1, sizeof(*data));
953 ret->data = data;
954 ret->set_option = NULL;
955 ret->get_refs_list = get_refs_via_connect;
956 ret->fetch = fetch_refs_via_pack;
957 ret->push_refs = git_transport_push;
958 ret->connect = connect_git;
959 ret->disconnect = disconnect_git;
960 ret->smart_options = &(data->options);
961
962 data->conn = NULL;
963 data->got_remote_heads = 0;
964 } else {
965 /* Unknown protocol in URL. Pass to external handler. */
966 int len = external_specification_len(url);
967 char *handler = xmalloc(len + 1);
968 handler[len] = 0;
969 strncpy(handler, url, len);
970 transport_helper_init(ret, handler);
971 }
972
973 if (ret->smart_options) {
974 ret->smart_options->thin = 1;
975 ret->smart_options->uploadpack = "git-upload-pack";
976 if (remote->uploadpack)
977 ret->smart_options->uploadpack = remote->uploadpack;
978 ret->smart_options->receivepack = "git-receive-pack";
979 if (remote->receivepack)
980 ret->smart_options->receivepack = remote->receivepack;
981 }
982
983 return ret;
984 }
985
986 int transport_set_option(struct transport *transport,
987 const char *name, const char *value)
988 {
989 int git_reports = 1, protocol_reports = 1;
990
991 if (transport->smart_options)
992 git_reports = set_git_option(transport->smart_options,
993 name, value);
994
995 if (transport->set_option)
996 protocol_reports = transport->set_option(transport, name,
997 value);
998
999 /* If either report is 0, report 0 (success). */
1000 if (!git_reports || !protocol_reports)
1001 return 0;
1002 /* If either reports -1 (invalid value), report -1. */
1003 if ((git_reports == -1) || (protocol_reports == -1))
1004 return -1;
1005 /* Otherwise if both report unknown, report unknown. */
1006 return 1;
1007 }
1008
1009 void transport_set_verbosity(struct transport *transport, int verbosity,
1010 int force_progress)
1011 {
1012 if (verbosity >= 1)
1013 transport->verbose = verbosity <= 3 ? verbosity : 3;
1014 if (verbosity < 0)
1015 transport->verbose = -1;
1016
1017 /**
1018 * Rules used to determine whether to report progress (processing aborts
1019 * when a rule is satisfied):
1020 *
1021 * . Report progress, if force_progress is 1 (ie. --progress).
1022 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1023 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1024 * . Report progress if isatty(2) is 1.
1025 **/
1026 if (force_progress >= 0)
1027 transport->progress = !!force_progress;
1028 else
1029 transport->progress = verbosity >= 0 && isatty(2);
1030 }
1031
1032 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1033 {
1034 int i;
1035
1036 fprintf(stderr, "The following submodule paths contain changes that can\n"
1037 "not be found on any remote:\n");
1038 for (i = 0; i < needs_pushing->nr; i++)
1039 printf(" %s\n", needs_pushing->items[i].string);
1040 fprintf(stderr, "\nPlease try\n\n"
1041 " git push --recurse-submodules=on-demand\n\n"
1042 "or cd to the path and use\n\n"
1043 " git push\n\n"
1044 "to push them to a remote.\n\n");
1045
1046 string_list_clear(needs_pushing, 0);
1047
1048 die("Aborting.");
1049 }
1050
1051 static int run_pre_push_hook(struct transport *transport,
1052 struct ref *remote_refs)
1053 {
1054 int ret = 0, x;
1055 struct ref *r;
1056 struct child_process proc = CHILD_PROCESS_INIT;
1057 struct strbuf buf;
1058 const char *argv[4];
1059
1060 if (!(argv[0] = find_hook("pre-push")))
1061 return 0;
1062
1063 argv[1] = transport->remote->name;
1064 argv[2] = transport->url;
1065 argv[3] = NULL;
1066
1067 proc.argv = argv;
1068 proc.in = -1;
1069
1070 if (start_command(&proc)) {
1071 finish_command(&proc);
1072 return -1;
1073 }
1074
1075 strbuf_init(&buf, 256);
1076
1077 for (r = remote_refs; r; r = r->next) {
1078 if (!r->peer_ref) continue;
1079 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1080 if (r->status == REF_STATUS_REJECT_STALE) continue;
1081 if (r->status == REF_STATUS_UPTODATE) continue;
1082
1083 strbuf_reset(&buf);
1084 strbuf_addf( &buf, "%s %s %s %s\n",
1085 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1086 r->name, sha1_to_hex(r->old_sha1));
1087
1088 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1089 ret = -1;
1090 break;
1091 }
1092 }
1093
1094 strbuf_release(&buf);
1095
1096 x = close(proc.in);
1097 if (!ret)
1098 ret = x;
1099
1100 x = finish_command(&proc);
1101 if (!ret)
1102 ret = x;
1103
1104 return ret;
1105 }
1106
1107 int transport_push(struct transport *transport,
1108 int refspec_nr, const char **refspec, int flags,
1109 unsigned int *reject_reasons)
1110 {
1111 *reject_reasons = 0;
1112 transport_verify_remote_names(refspec_nr, refspec);
1113
1114 if (transport->push) {
1115 /* Maybe FIXME. But no important transport uses this case. */
1116 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1117 die("This transport does not support using --set-upstream");
1118
1119 return transport->push(transport, refspec_nr, refspec, flags);
1120 } else if (transport->push_refs) {
1121 struct ref *remote_refs;
1122 struct ref *local_refs = get_local_heads();
1123 int match_flags = MATCH_REFS_NONE;
1124 int verbose = (transport->verbose > 0);
1125 int quiet = (transport->verbose < 0);
1126 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1127 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1128 int push_ret, ret, err;
1129
1130 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1131 return -1;
1132
1133 remote_refs = transport->get_refs_list(transport, 1);
1134
1135 if (flags & TRANSPORT_PUSH_ALL)
1136 match_flags |= MATCH_REFS_ALL;
1137 if (flags & TRANSPORT_PUSH_MIRROR)
1138 match_flags |= MATCH_REFS_MIRROR;
1139 if (flags & TRANSPORT_PUSH_PRUNE)
1140 match_flags |= MATCH_REFS_PRUNE;
1141 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1142 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1143
1144 if (match_push_refs(local_refs, &remote_refs,
1145 refspec_nr, refspec, match_flags)) {
1146 return -1;
1147 }
1148
1149 if (transport->smart_options &&
1150 transport->smart_options->cas &&
1151 !is_empty_cas(transport->smart_options->cas))
1152 apply_push_cas(transport->smart_options->cas,
1153 transport->remote, remote_refs);
1154
1155 set_ref_status_for_push(remote_refs,
1156 flags & TRANSPORT_PUSH_MIRROR,
1157 flags & TRANSPORT_PUSH_FORCE);
1158
1159 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1160 if (run_pre_push_hook(transport, remote_refs))
1161 return -1;
1162
1163 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1164 struct ref *ref = remote_refs;
1165 for (; ref; ref = ref->next)
1166 if (!is_null_sha1(ref->new_sha1) &&
1167 !push_unpushed_submodules(ref->new_sha1,
1168 transport->remote->name))
1169 die ("Failed to push all needed submodules!");
1170 }
1171
1172 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1173 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1174 struct ref *ref = remote_refs;
1175 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1176
1177 for (; ref; ref = ref->next)
1178 if (!is_null_sha1(ref->new_sha1) &&
1179 find_unpushed_submodules(ref->new_sha1,
1180 transport->remote->name, &needs_pushing))
1181 die_with_unpushed_submodules(&needs_pushing);
1182 }
1183
1184 push_ret = transport->push_refs(transport, remote_refs, flags);
1185 err = push_had_errors(remote_refs);
1186 ret = push_ret | err;
1187
1188 if (!quiet || err)
1189 transport_print_push_status(transport->url, remote_refs,
1190 verbose | porcelain, porcelain,
1191 reject_reasons);
1192
1193 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1194 set_upstreams(transport, remote_refs, pretend);
1195
1196 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1197 struct ref *ref;
1198 for (ref = remote_refs; ref; ref = ref->next)
1199 transport_update_tracking_ref(transport->remote, ref, verbose);
1200 }
1201
1202 if (porcelain && !push_ret)
1203 puts("Done");
1204 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1205 fprintf(stderr, "Everything up-to-date\n");
1206
1207 return ret;
1208 }
1209 return 1;
1210 }
1211
1212 const struct ref *transport_get_remote_refs(struct transport *transport)
1213 {
1214 if (!transport->got_remote_refs) {
1215 transport->remote_refs = transport->get_refs_list(transport, 0);
1216 transport->got_remote_refs = 1;
1217 }
1218
1219 return transport->remote_refs;
1220 }
1221
1222 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1223 {
1224 int rc;
1225 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1226 struct ref **heads = NULL;
1227 struct ref *rm;
1228
1229 for (rm = refs; rm; rm = rm->next) {
1230 nr_refs++;
1231 if (rm->peer_ref &&
1232 !is_null_sha1(rm->old_sha1) &&
1233 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1234 continue;
1235 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1236 heads[nr_heads++] = rm;
1237 }
1238
1239 if (!nr_heads) {
1240 /*
1241 * When deepening of a shallow repository is requested,
1242 * then local and remote refs are likely to still be equal.
1243 * Just feed them all to the fetch method in that case.
1244 * This condition shouldn't be met in a non-deepening fetch
1245 * (see builtin/fetch.c:quickfetch()).
1246 */
1247 heads = xmalloc(nr_refs * sizeof(*heads));
1248 for (rm = refs; rm; rm = rm->next)
1249 heads[nr_heads++] = rm;
1250 }
1251
1252 rc = transport->fetch(transport, nr_heads, heads);
1253
1254 free(heads);
1255 return rc;
1256 }
1257
1258 void transport_unlock_pack(struct transport *transport)
1259 {
1260 if (transport->pack_lockfile) {
1261 unlink_or_warn(transport->pack_lockfile);
1262 free(transport->pack_lockfile);
1263 transport->pack_lockfile = NULL;
1264 }
1265 }
1266
1267 int transport_connect(struct transport *transport, const char *name,
1268 const char *exec, int fd[2])
1269 {
1270 if (transport->connect)
1271 return transport->connect(transport, name, exec, fd);
1272 else
1273 die("Operation not supported by protocol");
1274 }
1275
1276 int transport_disconnect(struct transport *transport)
1277 {
1278 int ret = 0;
1279 if (transport->disconnect)
1280 ret = transport->disconnect(transport);
1281 free(transport);
1282 return ret;
1283 }
1284
1285 /*
1286 * Strip username (and password) from a URL and return
1287 * it in a newly allocated string.
1288 */
1289 char *transport_anonymize_url(const char *url)
1290 {
1291 char *anon_url, *scheme_prefix, *anon_part;
1292 size_t anon_len, prefix_len = 0;
1293
1294 anon_part = strchr(url, '@');
1295 if (url_is_local_not_ssh(url) || !anon_part)
1296 goto literal_copy;
1297
1298 anon_len = strlen(++anon_part);
1299 scheme_prefix = strstr(url, "://");
1300 if (!scheme_prefix) {
1301 if (!strchr(anon_part, ':'))
1302 /* cannot be "me@there:/path/name" */
1303 goto literal_copy;
1304 } else {
1305 const char *cp;
1306 /* make sure scheme is reasonable */
1307 for (cp = url; cp < scheme_prefix; cp++) {
1308 switch (*cp) {
1309 /* RFC 1738 2.1 */
1310 case '+': case '.': case '-':
1311 break; /* ok */
1312 default:
1313 if (isalnum(*cp))
1314 break;
1315 /* it isn't */
1316 goto literal_copy;
1317 }
1318 }
1319 /* @ past the first slash does not count */
1320 cp = strchr(scheme_prefix + 3, '/');
1321 if (cp && cp < anon_part)
1322 goto literal_copy;
1323 prefix_len = scheme_prefix - url + 3;
1324 }
1325 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1326 memcpy(anon_url, url, prefix_len);
1327 memcpy(anon_url + prefix_len, anon_part, anon_len);
1328 return anon_url;
1329 literal_copy:
1330 return xstrdup(url);
1331 }
1332
1333 struct alternate_refs_data {
1334 alternate_ref_fn *fn;
1335 void *data;
1336 };
1337
1338 static int refs_from_alternate_cb(struct alternate_object_database *e,
1339 void *data)
1340 {
1341 char *other;
1342 size_t len;
1343 struct remote *remote;
1344 struct transport *transport;
1345 const struct ref *extra;
1346 struct alternate_refs_data *cb = data;
1347
1348 e->name[-1] = '\0';
1349 other = xstrdup(real_path(e->base));
1350 e->name[-1] = '/';
1351 len = strlen(other);
1352
1353 while (other[len-1] == '/')
1354 other[--len] = '\0';
1355 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1356 goto out;
1357 /* Is this a git repository with refs? */
1358 memcpy(other + len - 8, "/refs", 6);
1359 if (!is_directory(other))
1360 goto out;
1361 other[len - 8] = '\0';
1362 remote = remote_get(other);
1363 transport = transport_get(remote, other);
1364 for (extra = transport_get_remote_refs(transport);
1365 extra;
1366 extra = extra->next)
1367 cb->fn(extra, cb->data);
1368 transport_disconnect(transport);
1369 out:
1370 free(other);
1371 return 0;
1372 }
1373
1374 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1375 {
1376 struct alternate_refs_data cb;
1377 cb.fn = fn;
1378 cb.data = data;
1379 foreach_alt_odb(refs_from_alternate_cb, &cb);
1380 }
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