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git-remote-mediawiki: don't include HTTP login/password in author
[git.git] / transport.c
blob98c577804f177b1c6f9df0e34e5fc3a656a81d27
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 "send-pack.h"
7 #include "walker.h"
8 #include "bundle.h"
9 #include "dir.h"
10 #include "refs.h"
11 #include "branch.h"
12 #include "url.h"
13
14 /* rsync support */
15
16 /*
17 * We copy packed-refs and refs/ into a temporary file, then read the
18 * loose refs recursively (sorting whenever possible), and then inserting
19 * those packed refs that are not yet in the list (not validating, but
20 * assuming that the file is sorted).
21 *
22 * Appears refactoring this from refs.c is too cumbersome.
23 */
24
25 static int str_cmp(const void *a, const void *b)
26 {
27 const char *s1 = a;
28 const char *s2 = b;
29
30 return strcmp(s1, s2);
31 }
32
33 /* path->buf + name_offset is expected to point to "refs/" */
34
35 static int read_loose_refs(struct strbuf *path, int name_offset,
36 struct ref **tail)
37 {
38 DIR *dir = opendir(path->buf);
39 struct dirent *de;
40 struct {
41 char **entries;
42 int nr, alloc;
43 } list;
44 int i, pathlen;
45
46 if (!dir)
47 return -1;
48
49 memset (&list, 0, sizeof(list));
50
51 while ((de = readdir(dir))) {
52 if (is_dot_or_dotdot(de->d_name))
53 continue;
54 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
55 list.entries[list.nr++] = xstrdup(de->d_name);
56 }
57 closedir(dir);
58
59 /* sort the list */
60
61 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
62
63 pathlen = path->len;
64 strbuf_addch(path, '/');
65
66 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
67 strbuf_addstr(path, list.entries[i]);
68 if (read_loose_refs(path, name_offset, tail)) {
69 int fd = open(path->buf, O_RDONLY);
70 char buffer[40];
71 struct ref *next;
72
73 if (fd < 0)
74 continue;
75 next = alloc_ref(path->buf + name_offset);
76 if (read_in_full(fd, buffer, 40) != 40 ||
77 get_sha1_hex(buffer, next->old_sha1)) {
78 close(fd);
79 free(next);
80 continue;
81 }
82 close(fd);
83 (*tail)->next = next;
84 *tail = next;
85 }
86 }
87 strbuf_setlen(path, pathlen);
88
89 for (i = 0; i < list.nr; i++)
90 free(list.entries[i]);
91 free(list.entries);
92
93 return 0;
94 }
95
96 /* insert the packed refs for which no loose refs were found */
97
98 static void insert_packed_refs(const char *packed_refs, struct ref **list)
99 {
100 FILE *f = fopen(packed_refs, "r");
101 static char buffer[PATH_MAX];
102
103 if (!f)
104 return;
105
106 for (;;) {
107 int cmp = cmp, len;
108
109 if (!fgets(buffer, sizeof(buffer), f)) {
110 fclose(f);
111 return;
112 }
113
114 if (hexval(buffer[0]) > 0xf)
115 continue;
116 len = strlen(buffer);
117 if (len && buffer[len - 1] == '\n')
118 buffer[--len] = '\0';
119 if (len < 41)
120 continue;
121 while ((*list)->next &&
122 (cmp = strcmp(buffer + 41,
123 (*list)->next->name)) > 0)
124 list = &(*list)->next;
125 if (!(*list)->next || cmp < 0) {
126 struct ref *next = alloc_ref(buffer + 41);
127 buffer[40] = '\0';
128 if (get_sha1_hex(buffer, next->old_sha1)) {
129 warning ("invalid SHA-1: %s", buffer);
130 free(next);
131 continue;
132 }
133 next->next = (*list)->next;
134 (*list)->next = next;
135 list = &(*list)->next;
136 }
137 }
138 }
139
140 static void set_upstreams(struct transport *transport, struct ref *refs,
141 int pretend)
142 {
143 struct ref *ref;
144 for (ref = refs; ref; ref = ref->next) {
145 const char *localname;
146 const char *tmp;
147 const char *remotename;
148 unsigned char sha[20];
149 int flag = 0;
150 /*
151 * Check suitability for tracking. Must be successful /
152 * already up-to-date ref create/modify (not delete).
153 */
154 if (ref->status != REF_STATUS_OK &&
155 ref->status != REF_STATUS_UPTODATE)
156 continue;
157 if (!ref->peer_ref)
158 continue;
159 if (is_null_sha1(ref->new_sha1))
160 continue;
161
162 /* Follow symbolic refs (mainly for HEAD). */
163 localname = ref->peer_ref->name;
164 remotename = ref->name;
165 tmp = resolve_ref(localname, sha, 1, &flag);
166 if (tmp && flag & REF_ISSYMREF &&
167 !prefixcmp(tmp, "refs/heads/"))
168 localname = tmp;
169
170 /* Both source and destination must be local branches. */
171 if (!localname || prefixcmp(localname, "refs/heads/"))
172 continue;
173 if (!remotename || prefixcmp(remotename, "refs/heads/"))
174 continue;
175
176 if (!pretend)
177 install_branch_config(BRANCH_CONFIG_VERBOSE,
178 localname + 11, transport->remote->name,
179 remotename);
180 else
181 printf("Would set upstream of '%s' to '%s' of '%s'\n",
182 localname + 11, remotename + 11,
183 transport->remote->name);
184 }
185 }
186
187 static const char *rsync_url(const char *url)
188 {
189 return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
190 }
191
192 static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
193 {
194 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
195 struct ref dummy = {NULL}, *tail = &dummy;
196 struct child_process rsync;
197 const char *args[5];
198 int temp_dir_len;
199
200 if (for_push)
201 return NULL;
202
203 /* copy the refs to the temporary directory */
204
205 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
206 if (!mkdtemp(temp_dir.buf))
207 die_errno ("Could not make temporary directory");
208 temp_dir_len = temp_dir.len;
209
210 strbuf_addstr(&buf, rsync_url(transport->url));
211 strbuf_addstr(&buf, "/refs");
212
213 memset(&rsync, 0, sizeof(rsync));
214 rsync.argv = args;
215 rsync.stdout_to_stderr = 1;
216 args[0] = "rsync";
217 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
218 args[2] = buf.buf;
219 args[3] = temp_dir.buf;
220 args[4] = NULL;
221
222 if (run_command(&rsync))
223 die ("Could not run rsync to get refs");
224
225 strbuf_reset(&buf);
226 strbuf_addstr(&buf, rsync_url(transport->url));
227 strbuf_addstr(&buf, "/packed-refs");
228
229 args[2] = buf.buf;
230
231 if (run_command(&rsync))
232 die ("Could not run rsync to get refs");
233
234 /* read the copied refs */
235
236 strbuf_addstr(&temp_dir, "/refs");
237 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
238 strbuf_setlen(&temp_dir, temp_dir_len);
239
240 tail = &dummy;
241 strbuf_addstr(&temp_dir, "/packed-refs");
242 insert_packed_refs(temp_dir.buf, &tail);
243 strbuf_setlen(&temp_dir, temp_dir_len);
244
245 if (remove_dir_recursively(&temp_dir, 0))
246 warning ("Error removing temporary directory %s.",
247 temp_dir.buf);
248
249 strbuf_release(&buf);
250 strbuf_release(&temp_dir);
251
252 return dummy.next;
253 }
254
255 static int fetch_objs_via_rsync(struct transport *transport,
256 int nr_objs, struct ref **to_fetch)
257 {
258 struct strbuf buf = STRBUF_INIT;
259 struct child_process rsync;
260 const char *args[8];
261 int result;
262
263 strbuf_addstr(&buf, rsync_url(transport->url));
264 strbuf_addstr(&buf, "/objects/");
265
266 memset(&rsync, 0, sizeof(rsync));
267 rsync.argv = args;
268 rsync.stdout_to_stderr = 1;
269 args[0] = "rsync";
270 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
271 args[2] = "--ignore-existing";
272 args[3] = "--exclude";
273 args[4] = "info";
274 args[5] = buf.buf;
275 args[6] = get_object_directory();
276 args[7] = NULL;
277
278 /* NEEDSWORK: handle one level of alternates */
279 result = run_command(&rsync);
280
281 strbuf_release(&buf);
282
283 return result;
284 }
285
286 static int write_one_ref(const char *name, const unsigned char *sha1,
287 int flags, void *data)
288 {
289 struct strbuf *buf = data;
290 int len = buf->len;
291 FILE *f;
292
293 /* when called via for_each_ref(), flags is non-zero */
294 if (flags && prefixcmp(name, "refs/heads/") &&
295 prefixcmp(name, "refs/tags/"))
296 return 0;
297
298 strbuf_addstr(buf, name);
299 if (safe_create_leading_directories(buf->buf) ||
300 !(f = fopen(buf->buf, "w")) ||
301 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
302 fclose(f))
303 return error("problems writing temporary file %s", buf->buf);
304 strbuf_setlen(buf, len);
305 return 0;
306 }
307
308 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
309 int refspec_nr, const char **refspec)
310 {
311 int i;
312
313 for (i = 0; i < refspec_nr; i++) {
314 unsigned char sha1[20];
315 char *ref;
316
317 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
318 return error("Could not get ref %s", refspec[i]);
319
320 if (write_one_ref(ref, sha1, 0, temp_dir)) {
321 free(ref);
322 return -1;
323 }
324 free(ref);
325 }
326 return 0;
327 }
328
329 static int rsync_transport_push(struct transport *transport,
330 int refspec_nr, const char **refspec, int flags)
331 {
332 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
333 int result = 0, i;
334 struct child_process rsync;
335 const char *args[10];
336
337 if (flags & TRANSPORT_PUSH_MIRROR)
338 return error("rsync transport does not support mirror mode");
339
340 /* first push the objects */
341
342 strbuf_addstr(&buf, rsync_url(transport->url));
343 strbuf_addch(&buf, '/');
344
345 memset(&rsync, 0, sizeof(rsync));
346 rsync.argv = args;
347 rsync.stdout_to_stderr = 1;
348 i = 0;
349 args[i++] = "rsync";
350 args[i++] = "-a";
351 if (flags & TRANSPORT_PUSH_DRY_RUN)
352 args[i++] = "--dry-run";
353 if (transport->verbose > 0)
354 args[i++] = "-v";
355 args[i++] = "--ignore-existing";
356 args[i++] = "--exclude";
357 args[i++] = "info";
358 args[i++] = get_object_directory();
359 args[i++] = buf.buf;
360 args[i++] = NULL;
361
362 if (run_command(&rsync))
363 return error("Could not push objects to %s",
364 rsync_url(transport->url));
365
366 /* copy the refs to the temporary directory; they could be packed. */
367
368 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
369 if (!mkdtemp(temp_dir.buf))
370 die_errno ("Could not make temporary directory");
371 strbuf_addch(&temp_dir, '/');
372
373 if (flags & TRANSPORT_PUSH_ALL) {
374 if (for_each_ref(write_one_ref, &temp_dir))
375 return -1;
376 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
377 return -1;
378
379 i = 2;
380 if (flags & TRANSPORT_PUSH_DRY_RUN)
381 args[i++] = "--dry-run";
382 if (!(flags & TRANSPORT_PUSH_FORCE))
383 args[i++] = "--ignore-existing";
384 args[i++] = temp_dir.buf;
385 args[i++] = rsync_url(transport->url);
386 args[i++] = NULL;
387 if (run_command(&rsync))
388 result = error("Could not push to %s",
389 rsync_url(transport->url));
390
391 if (remove_dir_recursively(&temp_dir, 0))
392 warning ("Could not remove temporary directory %s.",
393 temp_dir.buf);
394
395 strbuf_release(&buf);
396 strbuf_release(&temp_dir);
397
398 return result;
399 }
400
401 struct bundle_transport_data {
402 int fd;
403 struct bundle_header header;
404 };
405
406 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
407 {
408 struct bundle_transport_data *data = transport->data;
409 struct ref *result = NULL;
410 int i;
411
412 if (for_push)
413 return NULL;
414
415 if (data->fd > 0)
416 close(data->fd);
417 data->fd = read_bundle_header(transport->url, &data->header);
418 if (data->fd < 0)
419 die ("Could not read bundle '%s'.", transport->url);
420 for (i = 0; i < data->header.references.nr; i++) {
421 struct ref_list_entry *e = data->header.references.list + i;
422 struct ref *ref = alloc_ref(e->name);
423 hashcpy(ref->old_sha1, e->sha1);
424 ref->next = result;
425 result = ref;
426 }
427 return result;
428 }
429
430 static int fetch_refs_from_bundle(struct transport *transport,
431 int nr_heads, struct ref **to_fetch)
432 {
433 struct bundle_transport_data *data = transport->data;
434 return unbundle(&data->header, data->fd);
435 }
436
437 static int close_bundle(struct transport *transport)
438 {
439 struct bundle_transport_data *data = transport->data;
440 if (data->fd > 0)
441 close(data->fd);
442 free(data);
443 return 0;
444 }
445
446 struct git_transport_data {
447 struct git_transport_options options;
448 struct child_process *conn;
449 int fd[2];
450 unsigned got_remote_heads : 1;
451 struct extra_have_objects extra_have;
452 };
453
454 static int set_git_option(struct git_transport_options *opts,
455 const char *name, const char *value)
456 {
457 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
458 opts->uploadpack = value;
459 return 0;
460 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
461 opts->receivepack = value;
462 return 0;
463 } else if (!strcmp(name, TRANS_OPT_THIN)) {
464 opts->thin = !!value;
465 return 0;
466 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
467 opts->followtags = !!value;
468 return 0;
469 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
470 opts->keep = !!value;
471 return 0;
472 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
473 if (!value)
474 opts->depth = 0;
475 else
476 opts->depth = atoi(value);
477 return 0;
478 }
479 return 1;
480 }
481
482 static int connect_setup(struct transport *transport, int for_push, int verbose)
483 {
484 struct git_transport_data *data = transport->data;
485 struct strbuf sb = STRBUF_INIT;
486
487 if (data->conn)
488 return 0;
489
490 strbuf_addstr(&sb, for_push ? data->options.receivepack :
491 data->options.uploadpack);
492 if (for_push && transport->verbose < 0)
493 strbuf_addstr(&sb, " --quiet");
494 data->conn = git_connect(data->fd, transport->url, sb.buf,
495 verbose ? CONNECT_VERBOSE : 0);
496 strbuf_release(&sb);
497
498 return 0;
499 }
500
501 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
502 {
503 struct git_transport_data *data = transport->data;
504 struct ref *refs;
505
506 connect_setup(transport, for_push, 0);
507 get_remote_heads(data->fd[0], &refs, 0, NULL,
508 for_push ? REF_NORMAL : 0, &data->extra_have);
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 char **heads = xmalloc(nr_heads * sizeof(*heads));
519 char **origh = xmalloc(nr_heads * sizeof(*origh));
520 const struct ref *refs;
521 char *dest = xstrdup(transport->url);
522 struct fetch_pack_args args;
523 int i;
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 > 0);
533 args.quiet = (transport->verbose < 0);
534 args.no_progress = !transport->progress;
535 args.depth = data->options.depth;
536
537 for (i = 0; i < nr_heads; i++)
538 origh[i] = heads[i] = xstrdup(to_fetch[i]->name);
539
540 if (!data->got_remote_heads) {
541 connect_setup(transport, 0, 0);
542 get_remote_heads(data->fd[0], &refs_tmp, 0, NULL, 0, NULL);
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, nr_heads, heads, &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
556 free_refs(refs_tmp);
557
558 for (i = 0; i < nr_heads; i++)
559 free(origh[i]);
560 free(origh);
561 free(heads);
562 free(dest);
563 return (refs ? 0 : -1);
564 }
565
566 static int push_had_errors(struct ref *ref)
567 {
568 for (; ref; ref = ref->next) {
569 switch (ref->status) {
570 case REF_STATUS_NONE:
571 case REF_STATUS_UPTODATE:
572 case REF_STATUS_OK:
573 break;
574 default:
575 return 1;
576 }
577 }
578 return 0;
579 }
580
581 int transport_refs_pushed(struct ref *ref)
582 {
583 for (; ref; ref = ref->next) {
584 switch(ref->status) {
585 case REF_STATUS_NONE:
586 case REF_STATUS_UPTODATE:
587 break;
588 default:
589 return 1;
590 }
591 }
592 return 0;
593 }
594
595 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
596 {
597 struct refspec rs;
598
599 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
600 return;
601
602 rs.src = ref->name;
603 rs.dst = NULL;
604
605 if (!remote_find_tracking(remote, &rs)) {
606 if (verbose)
607 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
608 if (ref->deletion) {
609 delete_ref(rs.dst, NULL, 0);
610 } else
611 update_ref("update by push", rs.dst,
612 ref->new_sha1, NULL, 0, 0);
613 free(rs.dst);
614 }
615 }
616
617 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
618 {
619 if (porcelain) {
620 if (from)
621 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
622 else
623 fprintf(stdout, "%c\t:%s\t", flag, to->name);
624 if (msg)
625 fprintf(stdout, "%s (%s)\n", summary, msg);
626 else
627 fprintf(stdout, "%s\n", summary);
628 } else {
629 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
630 if (from)
631 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
632 else
633 fputs(prettify_refname(to->name), stderr);
634 if (msg) {
635 fputs(" (", stderr);
636 fputs(msg, stderr);
637 fputc(')', stderr);
638 }
639 fputc('\n', stderr);
640 }
641 }
642
643 static const char *status_abbrev(unsigned char sha1[20])
644 {
645 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
646 }
647
648 static void print_ok_ref_status(struct ref *ref, int porcelain)
649 {
650 if (ref->deletion)
651 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
652 else if (is_null_sha1(ref->old_sha1))
653 print_ref_status('*',
654 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
655 "[new branch]"),
656 ref, ref->peer_ref, NULL, porcelain);
657 else {
658 char quickref[84];
659 char type;
660 const char *msg;
661
662 strcpy(quickref, status_abbrev(ref->old_sha1));
663 if (ref->nonfastforward) {
664 strcat(quickref, "...");
665 type = '+';
666 msg = "forced update";
667 } else {
668 strcat(quickref, "..");
669 type = ' ';
670 msg = NULL;
671 }
672 strcat(quickref, status_abbrev(ref->new_sha1));
673
674 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
675 }
676 }
677
678 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
679 {
680 if (!count)
681 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
682
683 switch(ref->status) {
684 case REF_STATUS_NONE:
685 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
686 break;
687 case REF_STATUS_REJECT_NODELETE:
688 print_ref_status('!', "[rejected]", ref, NULL,
689 "remote does not support deleting refs", porcelain);
690 break;
691 case REF_STATUS_UPTODATE:
692 print_ref_status('=', "[up to date]", ref,
693 ref->peer_ref, NULL, porcelain);
694 break;
695 case REF_STATUS_REJECT_NONFASTFORWARD:
696 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
697 "non-fast-forward", porcelain);
698 break;
699 case REF_STATUS_REMOTE_REJECT:
700 print_ref_status('!', "[remote rejected]", ref,
701 ref->deletion ? NULL : ref->peer_ref,
702 ref->remote_status, porcelain);
703 break;
704 case REF_STATUS_EXPECTING_REPORT:
705 print_ref_status('!', "[remote failure]", ref,
706 ref->deletion ? NULL : ref->peer_ref,
707 "remote failed to report status", porcelain);
708 break;
709 case REF_STATUS_OK:
710 print_ok_ref_status(ref, porcelain);
711 break;
712 }
713
714 return 1;
715 }
716
717 void transport_print_push_status(const char *dest, struct ref *refs,
718 int verbose, int porcelain, int *nonfastforward)
719 {
720 struct ref *ref;
721 int n = 0;
722
723 if (verbose) {
724 for (ref = refs; ref; ref = ref->next)
725 if (ref->status == REF_STATUS_UPTODATE)
726 n += print_one_push_status(ref, dest, n, porcelain);
727 }
728
729 for (ref = refs; ref; ref = ref->next)
730 if (ref->status == REF_STATUS_OK)
731 n += print_one_push_status(ref, dest, n, porcelain);
732
733 *nonfastforward = 0;
734 for (ref = refs; ref; ref = ref->next) {
735 if (ref->status != REF_STATUS_NONE &&
736 ref->status != REF_STATUS_UPTODATE &&
737 ref->status != REF_STATUS_OK)
738 n += print_one_push_status(ref, dest, n, porcelain);
739 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD)
740 *nonfastforward = 1;
741 }
742 }
743
744 void transport_verify_remote_names(int nr_heads, const char **heads)
745 {
746 int i;
747
748 for (i = 0; i < nr_heads; i++) {
749 const char *local = heads[i];
750 const char *remote = strrchr(heads[i], ':');
751
752 if (*local == '+')
753 local++;
754
755 /* A matching refspec is okay. */
756 if (remote == local && remote[1] == '\0')
757 continue;
758
759 remote = remote ? (remote + 1) : local;
760 switch (check_ref_format(remote)) {
761 case 0: /* ok */
762 case CHECK_REF_FORMAT_ONELEVEL:
763 /* ok but a single level -- that is fine for
764 * a match pattern.
765 */
766 case CHECK_REF_FORMAT_WILDCARD:
767 /* ok but ends with a pattern-match character */
768 continue;
769 }
770 die("remote part of refspec is not a valid name in %s",
771 heads[i]);
772 }
773 }
774
775 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
776 {
777 struct git_transport_data *data = transport->data;
778 struct send_pack_args args;
779 int ret;
780
781 if (!data->got_remote_heads) {
782 struct ref *tmp_refs;
783 connect_setup(transport, 1, 0);
784
785 get_remote_heads(data->fd[0], &tmp_refs, 0, NULL, REF_NORMAL,
786 NULL);
787 data->got_remote_heads = 1;
788 }
789
790 memset(&args, 0, sizeof(args));
791 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
792 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
793 args.use_thin_pack = data->options.thin;
794 args.verbose = (transport->verbose > 0);
795 args.quiet = (transport->verbose < 0);
796 args.progress = transport->progress;
797 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
798 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
799
800 ret = send_pack(&args, data->fd, data->conn, remote_refs,
801 &data->extra_have);
802
803 close(data->fd[1]);
804 close(data->fd[0]);
805 ret |= finish_connect(data->conn);
806 data->conn = NULL;
807 data->got_remote_heads = 0;
808
809 return ret;
810 }
811
812 static int connect_git(struct transport *transport, const char *name,
813 const char *executable, int fd[2])
814 {
815 struct git_transport_data *data = transport->data;
816 data->conn = git_connect(data->fd, transport->url,
817 executable, 0);
818 fd[0] = data->fd[0];
819 fd[1] = data->fd[1];
820 return 0;
821 }
822
823 static int disconnect_git(struct transport *transport)
824 {
825 struct git_transport_data *data = transport->data;
826 if (data->conn) {
827 if (data->got_remote_heads)
828 packet_flush(data->fd[1]);
829 close(data->fd[0]);
830 close(data->fd[1]);
831 finish_connect(data->conn);
832 }
833
834 free(data);
835 return 0;
836 }
837
838 void transport_take_over(struct transport *transport,
839 struct child_process *child)
840 {
841 struct git_transport_data *data;
842
843 if (!transport->smart_options)
844 die("Bug detected: Taking over transport requires non-NULL "
845 "smart_options field.");
846
847 data = xcalloc(1, sizeof(*data));
848 data->options = *transport->smart_options;
849 data->conn = child;
850 data->fd[0] = data->conn->out;
851 data->fd[1] = data->conn->in;
852 data->got_remote_heads = 0;
853 transport->data = data;
854
855 transport->set_option = NULL;
856 transport->get_refs_list = get_refs_via_connect;
857 transport->fetch = fetch_refs_via_pack;
858 transport->push = NULL;
859 transport->push_refs = git_transport_push;
860 transport->disconnect = disconnect_git;
861 transport->smart_options = &(data->options);
862 }
863
864 static int is_local(const char *url)
865 {
866 const char *colon = strchr(url, ':');
867 const char *slash = strchr(url, '/');
868 return !colon || (slash && slash < colon) ||
869 has_dos_drive_prefix(url);
870 }
871
872 static int is_file(const char *url)
873 {
874 struct stat buf;
875 if (stat(url, &buf))
876 return 0;
877 return S_ISREG(buf.st_mode);
878 }
879
880 static int external_specification_len(const char *url)
881 {
882 return strchr(url, ':') - url;
883 }
884
885 struct transport *transport_get(struct remote *remote, const char *url)
886 {
887 const char *helper;
888 struct transport *ret = xcalloc(1, sizeof(*ret));
889
890 ret->progress = isatty(2);
891
892 if (!remote)
893 die("No remote provided to transport_get()");
894
895 ret->got_remote_refs = 0;
896 ret->remote = remote;
897 helper = remote->foreign_vcs;
898
899 if (!url && remote->url)
900 url = remote->url[0];
901 ret->url = url;
902
903 /* maybe it is a foreign URL? */
904 if (url) {
905 const char *p = url;
906
907 while (is_urlschemechar(p == url, *p))
908 p++;
909 if (!prefixcmp(p, "::"))
910 helper = xstrndup(url, p - url);
911 }
912
913 if (helper) {
914 transport_helper_init(ret, helper);
915 } else if (!prefixcmp(url, "rsync:")) {
916 ret->get_refs_list = get_refs_via_rsync;
917 ret->fetch = fetch_objs_via_rsync;
918 ret->push = rsync_transport_push;
919 ret->smart_options = NULL;
920 } else if (is_local(url) && is_file(url)) {
921 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
922 ret->data = data;
923 ret->get_refs_list = get_refs_from_bundle;
924 ret->fetch = fetch_refs_from_bundle;
925 ret->disconnect = close_bundle;
926 ret->smart_options = NULL;
927 } else if (!is_url(url)
928 || !prefixcmp(url, "file://")
929 || !prefixcmp(url, "git://")
930 || !prefixcmp(url, "ssh://")
931 || !prefixcmp(url, "git+ssh://")
932 || !prefixcmp(url, "ssh+git://")) {
933 /* These are builtin smart transports. */
934 struct git_transport_data *data = xcalloc(1, sizeof(*data));
935 ret->data = data;
936 ret->set_option = NULL;
937 ret->get_refs_list = get_refs_via_connect;
938 ret->fetch = fetch_refs_via_pack;
939 ret->push_refs = git_transport_push;
940 ret->connect = connect_git;
941 ret->disconnect = disconnect_git;
942 ret->smart_options = &(data->options);
943
944 data->conn = NULL;
945 data->got_remote_heads = 0;
946 } else {
947 /* Unknown protocol in URL. Pass to external handler. */
948 int len = external_specification_len(url);
949 char *handler = xmalloc(len + 1);
950 handler[len] = 0;
951 strncpy(handler, url, len);
952 transport_helper_init(ret, handler);
953 }
954
955 if (ret->smart_options) {
956 ret->smart_options->thin = 1;
957 ret->smart_options->uploadpack = "git-upload-pack";
958 if (remote->uploadpack)
959 ret->smart_options->uploadpack = remote->uploadpack;
960 ret->smart_options->receivepack = "git-receive-pack";
961 if (remote->receivepack)
962 ret->smart_options->receivepack = remote->receivepack;
963 }
964
965 return ret;
966 }
967
968 int transport_set_option(struct transport *transport,
969 const char *name, const char *value)
970 {
971 int git_reports = 1, protocol_reports = 1;
972
973 if (transport->smart_options)
974 git_reports = set_git_option(transport->smart_options,
975 name, value);
976
977 if (transport->set_option)
978 protocol_reports = transport->set_option(transport, name,
979 value);
980
981 /* If either report is 0, report 0 (success). */
982 if (!git_reports || !protocol_reports)
983 return 0;
984 /* If either reports -1 (invalid value), report -1. */
985 if ((git_reports == -1) || (protocol_reports == -1))
986 return -1;
987 /* Otherwise if both report unknown, report unknown. */
988 return 1;
989 }
990
991 void transport_set_verbosity(struct transport *transport, int verbosity,
992 int force_progress)
993 {
994 if (verbosity >= 2)
995 transport->verbose = verbosity <= 3 ? verbosity : 3;
996 if (verbosity < 0)
997 transport->verbose = -1;
998
999 /**
1000 * Rules used to determine whether to report progress (processing aborts
1001 * when a rule is satisfied):
1002 *
1003 * 1. Report progress, if force_progress is 1 (ie. --progress).
1004 * 2. Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1005 * 3. Report progress if isatty(2) is 1.
1006 **/
1007 transport->progress = force_progress || (verbosity >= 0 && isatty(2));
1008 }
1009
1010 int transport_push(struct transport *transport,
1011 int refspec_nr, const char **refspec, int flags,
1012 int *nonfastforward)
1013 {
1014 *nonfastforward = 0;
1015 transport_verify_remote_names(refspec_nr, refspec);
1016
1017 if (transport->push) {
1018 /* Maybe FIXME. But no important transport uses this case. */
1019 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1020 die("This transport does not support using --set-upstream");
1021
1022 return transport->push(transport, refspec_nr, refspec, flags);
1023 } else if (transport->push_refs) {
1024 struct ref *remote_refs =
1025 transport->get_refs_list(transport, 1);
1026 struct ref *local_refs = get_local_heads();
1027 int match_flags = MATCH_REFS_NONE;
1028 int verbose = (transport->verbose > 0);
1029 int quiet = (transport->verbose < 0);
1030 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1031 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1032 int push_ret, ret, err;
1033
1034 if (flags & TRANSPORT_PUSH_ALL)
1035 match_flags |= MATCH_REFS_ALL;
1036 if (flags & TRANSPORT_PUSH_MIRROR)
1037 match_flags |= MATCH_REFS_MIRROR;
1038
1039 if (match_refs(local_refs, &remote_refs,
1040 refspec_nr, refspec, match_flags)) {
1041 return -1;
1042 }
1043
1044 set_ref_status_for_push(remote_refs,
1045 flags & TRANSPORT_PUSH_MIRROR,
1046 flags & TRANSPORT_PUSH_FORCE);
1047
1048 push_ret = transport->push_refs(transport, remote_refs, flags);
1049 err = push_had_errors(remote_refs);
1050 ret = push_ret | err;
1051
1052 if (!quiet || err)
1053 transport_print_push_status(transport->url, remote_refs,
1054 verbose | porcelain, porcelain,
1055 nonfastforward);
1056
1057 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1058 set_upstreams(transport, remote_refs, pretend);
1059
1060 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1061 struct ref *ref;
1062 for (ref = remote_refs; ref; ref = ref->next)
1063 transport_update_tracking_ref(transport->remote, ref, verbose);
1064 }
1065
1066 if (porcelain && !push_ret)
1067 puts("Done");
1068 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1069 fprintf(stderr, "Everything up-to-date\n");
1070
1071 return ret;
1072 }
1073 return 1;
1074 }
1075
1076 const struct ref *transport_get_remote_refs(struct transport *transport)
1077 {
1078 if (!transport->got_remote_refs) {
1079 transport->remote_refs = transport->get_refs_list(transport, 0);
1080 transport->got_remote_refs = 1;
1081 }
1082
1083 return transport->remote_refs;
1084 }
1085
1086 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1087 {
1088 int rc;
1089 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1090 struct ref **heads = NULL;
1091 struct ref *rm;
1092
1093 for (rm = refs; rm; rm = rm->next) {
1094 nr_refs++;
1095 if (rm->peer_ref &&
1096 !is_null_sha1(rm->old_sha1) &&
1097 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1098 continue;
1099 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1100 heads[nr_heads++] = rm;
1101 }
1102
1103 if (!nr_heads) {
1104 /*
1105 * When deepening of a shallow repository is requested,
1106 * then local and remote refs are likely to still be equal.
1107 * Just feed them all to the fetch method in that case.
1108 * This condition shouldn't be met in a non-deepening fetch
1109 * (see builtin-fetch.c:quickfetch()).
1110 */
1111 heads = xmalloc(nr_refs * sizeof(*heads));
1112 for (rm = refs; rm; rm = rm->next)
1113 heads[nr_heads++] = rm;
1114 }
1115
1116 rc = transport->fetch(transport, nr_heads, heads);
1117
1118 free(heads);
1119 return rc;
1120 }
1121
1122 void transport_unlock_pack(struct transport *transport)
1123 {
1124 if (transport->pack_lockfile) {
1125 unlink_or_warn(transport->pack_lockfile);
1126 free(transport->pack_lockfile);
1127 transport->pack_lockfile = NULL;
1128 }
1129 }
1130
1131 int transport_connect(struct transport *transport, const char *name,
1132 const char *exec, int fd[2])
1133 {
1134 if (transport->connect)
1135 return transport->connect(transport, name, exec, fd);
1136 else
1137 die("Operation not supported by protocol");
1138 }
1139
1140 int transport_disconnect(struct transport *transport)
1141 {
1142 int ret = 0;
1143 if (transport->disconnect)
1144 ret = transport->disconnect(transport);
1145 free(transport);
1146 return ret;
1147 }
1148
1149 /*
1150 * Strip username (and password) from an url and return
1151 * it in a newly allocated string.
1152 */
1153 char *transport_anonymize_url(const char *url)
1154 {
1155 char *anon_url, *scheme_prefix, *anon_part;
1156 size_t anon_len, prefix_len = 0;
1157
1158 anon_part = strchr(url, '@');
1159 if (is_local(url) || !anon_part)
1160 goto literal_copy;
1161
1162 anon_len = strlen(++anon_part);
1163 scheme_prefix = strstr(url, "://");
1164 if (!scheme_prefix) {
1165 if (!strchr(anon_part, ':'))
1166 /* cannot be "me@there:/path/name" */
1167 goto literal_copy;
1168 } else {
1169 const char *cp;
1170 /* make sure scheme is reasonable */
1171 for (cp = url; cp < scheme_prefix; cp++) {
1172 switch (*cp) {
1173 /* RFC 1738 2.1 */
1174 case '+': case '.': case '-':
1175 break; /* ok */
1176 default:
1177 if (isalnum(*cp))
1178 break;
1179 /* it isn't */
1180 goto literal_copy;
1181 }
1182 }
1183 /* @ past the first slash does not count */
1184 cp = strchr(scheme_prefix + 3, '/');
1185 if (cp && cp < anon_part)
1186 goto literal_copy;
1187 prefix_len = scheme_prefix - url + 3;
1188 }
1189 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1190 memcpy(anon_url, url, prefix_len);
1191 memcpy(anon_url + prefix_len, anon_part, anon_len);
1192 return anon_url;
1193 literal_copy:
1194 return xstrdup(url);
1195 }
1196
1197 struct alternate_refs_data {
1198 alternate_ref_fn *fn;
1199 void *data;
1200 };
1201
1202 static int refs_from_alternate_cb(struct alternate_object_database *e,
1203 void *data)
1204 {
1205 char *other;
1206 size_t len;
1207 struct remote *remote;
1208 struct transport *transport;
1209 const struct ref *extra;
1210 struct alternate_refs_data *cb = data;
1211
1212 e->name[-1] = '\0';
1213 other = xstrdup(real_path(e->base));
1214 e->name[-1] = '/';
1215 len = strlen(other);
1216
1217 while (other[len-1] == '/')
1218 other[--len] = '\0';
1219 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1220 return 0;
1221 /* Is this a git repository with refs? */
1222 memcpy(other + len - 8, "/refs", 6);
1223 if (!is_directory(other))
1224 return 0;
1225 other[len - 8] = '\0';
1226 remote = remote_get(other);
1227 transport = transport_get(remote, other);
1228 for (extra = transport_get_remote_refs(transport);
1229 extra;
1230 extra = extra->next)
1231 cb->fn(extra, cb->data);
1232 transport_disconnect(transport);
1233 free(other);
1234 return 0;
1235 }
1236
1237 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1238 {
1239 struct alternate_refs_data cb;
1240 cb.fn = fn;
1241 cb.data = data;
1242 foreach_alt_odb(refs_from_alternate_cb, &cb);
1243 }
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