clone: use --progress to force progress reporting
[git/git.git] / transport.c
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
12 /* rsync support */
13
14 /*
15 * We copy packed-refs and refs/ into a temporary file, then read the
16 * loose refs recursively (sorting whenever possible), and then inserting
17 * those packed refs that are not yet in the list (not validating, but
18 * assuming that the file is sorted).
19 *
20 * Appears refactoring this from refs.c is too cumbersome.
21 */
22
23 static int str_cmp(const void *a, const void *b)
24 {
25 const char *s1 = a;
26 const char *s2 = b;
27
28 return strcmp(s1, s2);
29 }
30
31 /* path->buf + name_offset is expected to point to "refs/" */
32
33 static int read_loose_refs(struct strbuf *path, int name_offset,
34 struct ref **tail)
35 {
36 DIR *dir = opendir(path->buf);
37 struct dirent *de;
38 struct {
39 char **entries;
40 int nr, alloc;
41 } list;
42 int i, pathlen;
43
44 if (!dir)
45 return -1;
46
47 memset (&list, 0, sizeof(list));
48
49 while ((de = readdir(dir))) {
50 if (is_dot_or_dotdot(de->d_name))
51 continue;
52 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
53 list.entries[list.nr++] = xstrdup(de->d_name);
54 }
55 closedir(dir);
56
57 /* sort the list */
58
59 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
60
61 pathlen = path->len;
62 strbuf_addch(path, '/');
63
64 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
65 strbuf_addstr(path, list.entries[i]);
66 if (read_loose_refs(path, name_offset, tail)) {
67 int fd = open(path->buf, O_RDONLY);
68 char buffer[40];
69 struct ref *next;
70
71 if (fd < 0)
72 continue;
73 next = alloc_ref(path->buf + name_offset);
74 if (read_in_full(fd, buffer, 40) != 40 ||
75 get_sha1_hex(buffer, next->old_sha1)) {
76 close(fd);
77 free(next);
78 continue;
79 }
80 close(fd);
81 (*tail)->next = next;
82 *tail = next;
83 }
84 }
85 strbuf_setlen(path, pathlen);
86
87 for (i = 0; i < list.nr; i++)
88 free(list.entries[i]);
89 free(list.entries);
90
91 return 0;
92 }
93
94 /* insert the packed refs for which no loose refs were found */
95
96 static void insert_packed_refs(const char *packed_refs, struct ref **list)
97 {
98 FILE *f = fopen(packed_refs, "r");
99 static char buffer[PATH_MAX];
100
101 if (!f)
102 return;
103
104 for (;;) {
105 int cmp = cmp, len;
106
107 if (!fgets(buffer, sizeof(buffer), f)) {
108 fclose(f);
109 return;
110 }
111
112 if (hexval(buffer[0]) > 0xf)
113 continue;
114 len = strlen(buffer);
115 if (len && buffer[len - 1] == '\n')
116 buffer[--len] = '\0';
117 if (len < 41)
118 continue;
119 while ((*list)->next &&
120 (cmp = strcmp(buffer + 41,
121 (*list)->next->name)) > 0)
122 list = &(*list)->next;
123 if (!(*list)->next || cmp < 0) {
124 struct ref *next = alloc_ref(buffer + 41);
125 buffer[40] = '\0';
126 if (get_sha1_hex(buffer, next->old_sha1)) {
127 warning ("invalid SHA-1: %s", buffer);
128 free(next);
129 continue;
130 }
131 next->next = (*list)->next;
132 (*list)->next = next;
133 list = &(*list)->next;
134 }
135 }
136 }
137
138 static const char *rsync_url(const char *url)
139 {
140 return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
141 }
142
143 static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
144 {
145 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
146 struct ref dummy, *tail = &dummy;
147 struct child_process rsync;
148 const char *args[5];
149 int temp_dir_len;
150
151 if (for_push)
152 return NULL;
153
154 /* copy the refs to the temporary directory */
155
156 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
157 if (!mkdtemp(temp_dir.buf))
158 die_errno ("Could not make temporary directory");
159 temp_dir_len = temp_dir.len;
160
161 strbuf_addstr(&buf, rsync_url(transport->url));
162 strbuf_addstr(&buf, "/refs");
163
164 memset(&rsync, 0, sizeof(rsync));
165 rsync.argv = args;
166 rsync.stdout_to_stderr = 1;
167 args[0] = "rsync";
168 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
169 args[2] = buf.buf;
170 args[3] = temp_dir.buf;
171 args[4] = NULL;
172
173 if (run_command(&rsync))
174 die ("Could not run rsync to get refs");
175
176 strbuf_reset(&buf);
177 strbuf_addstr(&buf, rsync_url(transport->url));
178 strbuf_addstr(&buf, "/packed-refs");
179
180 args[2] = buf.buf;
181
182 if (run_command(&rsync))
183 die ("Could not run rsync to get refs");
184
185 /* read the copied refs */
186
187 strbuf_addstr(&temp_dir, "/refs");
188 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
189 strbuf_setlen(&temp_dir, temp_dir_len);
190
191 tail = &dummy;
192 strbuf_addstr(&temp_dir, "/packed-refs");
193 insert_packed_refs(temp_dir.buf, &tail);
194 strbuf_setlen(&temp_dir, temp_dir_len);
195
196 if (remove_dir_recursively(&temp_dir, 0))
197 warning ("Error removing temporary directory %s.",
198 temp_dir.buf);
199
200 strbuf_release(&buf);
201 strbuf_release(&temp_dir);
202
203 return dummy.next;
204 }
205
206 static int fetch_objs_via_rsync(struct transport *transport,
207 int nr_objs, const struct ref **to_fetch)
208 {
209 struct strbuf buf = STRBUF_INIT;
210 struct child_process rsync;
211 const char *args[8];
212 int result;
213
214 strbuf_addstr(&buf, rsync_url(transport->url));
215 strbuf_addstr(&buf, "/objects/");
216
217 memset(&rsync, 0, sizeof(rsync));
218 rsync.argv = args;
219 rsync.stdout_to_stderr = 1;
220 args[0] = "rsync";
221 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
222 args[2] = "--ignore-existing";
223 args[3] = "--exclude";
224 args[4] = "info";
225 args[5] = buf.buf;
226 args[6] = get_object_directory();
227 args[7] = NULL;
228
229 /* NEEDSWORK: handle one level of alternates */
230 result = run_command(&rsync);
231
232 strbuf_release(&buf);
233
234 return result;
235 }
236
237 static int write_one_ref(const char *name, const unsigned char *sha1,
238 int flags, void *data)
239 {
240 struct strbuf *buf = data;
241 int len = buf->len;
242 FILE *f;
243
244 /* when called via for_each_ref(), flags is non-zero */
245 if (flags && prefixcmp(name, "refs/heads/") &&
246 prefixcmp(name, "refs/tags/"))
247 return 0;
248
249 strbuf_addstr(buf, name);
250 if (safe_create_leading_directories(buf->buf) ||
251 !(f = fopen(buf->buf, "w")) ||
252 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
253 fclose(f))
254 return error("problems writing temporary file %s", buf->buf);
255 strbuf_setlen(buf, len);
256 return 0;
257 }
258
259 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
260 int refspec_nr, const char **refspec)
261 {
262 int i;
263
264 for (i = 0; i < refspec_nr; i++) {
265 unsigned char sha1[20];
266 char *ref;
267
268 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
269 return error("Could not get ref %s", refspec[i]);
270
271 if (write_one_ref(ref, sha1, 0, temp_dir)) {
272 free(ref);
273 return -1;
274 }
275 free(ref);
276 }
277 return 0;
278 }
279
280 static int rsync_transport_push(struct transport *transport,
281 int refspec_nr, const char **refspec, int flags)
282 {
283 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
284 int result = 0, i;
285 struct child_process rsync;
286 const char *args[10];
287
288 if (flags & TRANSPORT_PUSH_MIRROR)
289 return error("rsync transport does not support mirror mode");
290
291 /* first push the objects */
292
293 strbuf_addstr(&buf, rsync_url(transport->url));
294 strbuf_addch(&buf, '/');
295
296 memset(&rsync, 0, sizeof(rsync));
297 rsync.argv = args;
298 rsync.stdout_to_stderr = 1;
299 i = 0;
300 args[i++] = "rsync";
301 args[i++] = "-a";
302 if (flags & TRANSPORT_PUSH_DRY_RUN)
303 args[i++] = "--dry-run";
304 if (transport->verbose > 0)
305 args[i++] = "-v";
306 args[i++] = "--ignore-existing";
307 args[i++] = "--exclude";
308 args[i++] = "info";
309 args[i++] = get_object_directory();
310 args[i++] = buf.buf;
311 args[i++] = NULL;
312
313 if (run_command(&rsync))
314 return error("Could not push objects to %s",
315 rsync_url(transport->url));
316
317 /* copy the refs to the temporary directory; they could be packed. */
318
319 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
320 if (!mkdtemp(temp_dir.buf))
321 die_errno ("Could not make temporary directory");
322 strbuf_addch(&temp_dir, '/');
323
324 if (flags & TRANSPORT_PUSH_ALL) {
325 if (for_each_ref(write_one_ref, &temp_dir))
326 return -1;
327 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
328 return -1;
329
330 i = 2;
331 if (flags & TRANSPORT_PUSH_DRY_RUN)
332 args[i++] = "--dry-run";
333 if (!(flags & TRANSPORT_PUSH_FORCE))
334 args[i++] = "--ignore-existing";
335 args[i++] = temp_dir.buf;
336 args[i++] = rsync_url(transport->url);
337 args[i++] = NULL;
338 if (run_command(&rsync))
339 result = error("Could not push to %s",
340 rsync_url(transport->url));
341
342 if (remove_dir_recursively(&temp_dir, 0))
343 warning ("Could not remove temporary directory %s.",
344 temp_dir.buf);
345
346 strbuf_release(&buf);
347 strbuf_release(&temp_dir);
348
349 return result;
350 }
351
352 struct bundle_transport_data {
353 int fd;
354 struct bundle_header header;
355 };
356
357 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
358 {
359 struct bundle_transport_data *data = transport->data;
360 struct ref *result = NULL;
361 int i;
362
363 if (for_push)
364 return NULL;
365
366 if (data->fd > 0)
367 close(data->fd);
368 data->fd = read_bundle_header(transport->url, &data->header);
369 if (data->fd < 0)
370 die ("Could not read bundle '%s'.", transport->url);
371 for (i = 0; i < data->header.references.nr; i++) {
372 struct ref_list_entry *e = data->header.references.list + i;
373 struct ref *ref = alloc_ref(e->name);
374 hashcpy(ref->old_sha1, e->sha1);
375 ref->next = result;
376 result = ref;
377 }
378 return result;
379 }
380
381 static int fetch_refs_from_bundle(struct transport *transport,
382 int nr_heads, const struct ref **to_fetch)
383 {
384 struct bundle_transport_data *data = transport->data;
385 return unbundle(&data->header, data->fd);
386 }
387
388 static int close_bundle(struct transport *transport)
389 {
390 struct bundle_transport_data *data = transport->data;
391 if (data->fd > 0)
392 close(data->fd);
393 free(data);
394 return 0;
395 }
396
397 struct git_transport_data {
398 unsigned thin : 1;
399 unsigned keep : 1;
400 unsigned followtags : 1;
401 int depth;
402 struct child_process *conn;
403 int fd[2];
404 const char *uploadpack;
405 const char *receivepack;
406 struct extra_have_objects extra_have;
407 };
408
409 static int set_git_option(struct transport *connection,
410 const char *name, const char *value)
411 {
412 struct git_transport_data *data = connection->data;
413 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
414 data->uploadpack = value;
415 return 0;
416 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
417 data->receivepack = value;
418 return 0;
419 } else if (!strcmp(name, TRANS_OPT_THIN)) {
420 data->thin = !!value;
421 return 0;
422 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
423 data->followtags = !!value;
424 return 0;
425 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
426 data->keep = !!value;
427 return 0;
428 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
429 if (!value)
430 data->depth = 0;
431 else
432 data->depth = atoi(value);
433 return 0;
434 }
435 return 1;
436 }
437
438 static int connect_setup(struct transport *transport, int for_push, int verbose)
439 {
440 struct git_transport_data *data = transport->data;
441 data->conn = git_connect(data->fd, transport->url,
442 for_push ? data->receivepack : data->uploadpack,
443 verbose ? CONNECT_VERBOSE : 0);
444 return 0;
445 }
446
447 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
448 {
449 struct git_transport_data *data = transport->data;
450 struct ref *refs;
451
452 connect_setup(transport, for_push, 0);
453 get_remote_heads(data->fd[0], &refs, 0, NULL,
454 for_push ? REF_NORMAL : 0, &data->extra_have);
455
456 return refs;
457 }
458
459 static int fetch_refs_via_pack(struct transport *transport,
460 int nr_heads, const struct ref **to_fetch)
461 {
462 struct git_transport_data *data = transport->data;
463 char **heads = xmalloc(nr_heads * sizeof(*heads));
464 char **origh = xmalloc(nr_heads * sizeof(*origh));
465 const struct ref *refs;
466 char *dest = xstrdup(transport->url);
467 struct fetch_pack_args args;
468 int i;
469 struct ref *refs_tmp = NULL;
470
471 memset(&args, 0, sizeof(args));
472 args.uploadpack = data->uploadpack;
473 args.keep_pack = data->keep;
474 args.lock_pack = 1;
475 args.use_thin_pack = data->thin;
476 args.include_tag = data->followtags;
477 args.verbose = (transport->verbose > 0);
478 args.quiet = (transport->verbose < 0);
479 args.no_progress = args.quiet || (!transport->progress && !isatty(2));
480 args.depth = data->depth;
481
482 for (i = 0; i < nr_heads; i++)
483 origh[i] = heads[i] = xstrdup(to_fetch[i]->name);
484
485 if (!data->conn) {
486 connect_setup(transport, 0, 0);
487 get_remote_heads(data->fd[0], &refs_tmp, 0, NULL, 0, NULL);
488 }
489
490 refs = fetch_pack(&args, data->fd, data->conn,
491 refs_tmp ? refs_tmp : transport->remote_refs,
492 dest, nr_heads, heads, &transport->pack_lockfile);
493 close(data->fd[0]);
494 close(data->fd[1]);
495 if (finish_connect(data->conn))
496 refs = NULL;
497 data->conn = NULL;
498
499 free_refs(refs_tmp);
500
501 for (i = 0; i < nr_heads; i++)
502 free(origh[i]);
503 free(origh);
504 free(heads);
505 free(dest);
506 return (refs ? 0 : -1);
507 }
508
509 static int push_had_errors(struct ref *ref)
510 {
511 for (; ref; ref = ref->next) {
512 switch (ref->status) {
513 case REF_STATUS_NONE:
514 case REF_STATUS_UPTODATE:
515 case REF_STATUS_OK:
516 break;
517 default:
518 return 1;
519 }
520 }
521 return 0;
522 }
523
524 static int refs_pushed(struct ref *ref)
525 {
526 for (; ref; ref = ref->next) {
527 switch(ref->status) {
528 case REF_STATUS_NONE:
529 case REF_STATUS_UPTODATE:
530 break;
531 default:
532 return 1;
533 }
534 }
535 return 0;
536 }
537
538 static void update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
539 {
540 struct refspec rs;
541
542 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
543 return;
544
545 rs.src = ref->name;
546 rs.dst = NULL;
547
548 if (!remote_find_tracking(remote, &rs)) {
549 if (verbose)
550 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
551 if (ref->deletion) {
552 delete_ref(rs.dst, NULL, 0);
553 } else
554 update_ref("update by push", rs.dst,
555 ref->new_sha1, NULL, 0, 0);
556 free(rs.dst);
557 }
558 }
559
560 #define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
561
562 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
563 {
564 if (porcelain) {
565 if (from)
566 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
567 else
568 fprintf(stdout, "%c\t:%s\t", flag, to->name);
569 if (msg)
570 fprintf(stdout, "%s (%s)\n", summary, msg);
571 else
572 fprintf(stdout, "%s\n", summary);
573 } else {
574 fprintf(stderr, " %c %-*s ", flag, SUMMARY_WIDTH, summary);
575 if (from)
576 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
577 else
578 fputs(prettify_refname(to->name), stderr);
579 if (msg) {
580 fputs(" (", stderr);
581 fputs(msg, stderr);
582 fputc(')', stderr);
583 }
584 fputc('\n', stderr);
585 }
586 }
587
588 static const char *status_abbrev(unsigned char sha1[20])
589 {
590 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
591 }
592
593 static void print_ok_ref_status(struct ref *ref, int porcelain)
594 {
595 if (ref->deletion)
596 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
597 else if (is_null_sha1(ref->old_sha1))
598 print_ref_status('*',
599 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
600 "[new branch]"),
601 ref, ref->peer_ref, NULL, porcelain);
602 else {
603 char quickref[84];
604 char type;
605 const char *msg;
606
607 strcpy(quickref, status_abbrev(ref->old_sha1));
608 if (ref->nonfastforward) {
609 strcat(quickref, "...");
610 type = '+';
611 msg = "forced update";
612 } else {
613 strcat(quickref, "..");
614 type = ' ';
615 msg = NULL;
616 }
617 strcat(quickref, status_abbrev(ref->new_sha1));
618
619 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
620 }
621 }
622
623 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
624 {
625 if (!count)
626 fprintf(stderr, "To %s\n", dest);
627
628 switch(ref->status) {
629 case REF_STATUS_NONE:
630 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
631 break;
632 case REF_STATUS_REJECT_NODELETE:
633 print_ref_status('!', "[rejected]", ref, NULL,
634 "remote does not support deleting refs", porcelain);
635 break;
636 case REF_STATUS_UPTODATE:
637 print_ref_status('=', "[up to date]", ref,
638 ref->peer_ref, NULL, porcelain);
639 break;
640 case REF_STATUS_REJECT_NONFASTFORWARD:
641 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
642 "non-fast-forward", porcelain);
643 break;
644 case REF_STATUS_REMOTE_REJECT:
645 print_ref_status('!', "[remote rejected]", ref,
646 ref->deletion ? NULL : ref->peer_ref,
647 ref->remote_status, porcelain);
648 break;
649 case REF_STATUS_EXPECTING_REPORT:
650 print_ref_status('!', "[remote failure]", ref,
651 ref->deletion ? NULL : ref->peer_ref,
652 "remote failed to report status", porcelain);
653 break;
654 case REF_STATUS_OK:
655 print_ok_ref_status(ref, porcelain);
656 break;
657 }
658
659 return 1;
660 }
661
662 static void print_push_status(const char *dest, struct ref *refs,
663 int verbose, int porcelain, int * nonfastforward)
664 {
665 struct ref *ref;
666 int n = 0;
667
668 if (verbose) {
669 for (ref = refs; ref; ref = ref->next)
670 if (ref->status == REF_STATUS_UPTODATE)
671 n += print_one_push_status(ref, dest, n, porcelain);
672 }
673
674 for (ref = refs; ref; ref = ref->next)
675 if (ref->status == REF_STATUS_OK)
676 n += print_one_push_status(ref, dest, n, porcelain);
677
678 *nonfastforward = 0;
679 for (ref = refs; ref; ref = ref->next) {
680 if (ref->status != REF_STATUS_NONE &&
681 ref->status != REF_STATUS_UPTODATE &&
682 ref->status != REF_STATUS_OK)
683 n += print_one_push_status(ref, dest, n, porcelain);
684 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD)
685 *nonfastforward = 1;
686 }
687 }
688
689 static void verify_remote_names(int nr_heads, const char **heads)
690 {
691 int i;
692
693 for (i = 0; i < nr_heads; i++) {
694 const char *local = heads[i];
695 const char *remote = strrchr(heads[i], ':');
696
697 if (*local == '+')
698 local++;
699
700 /* A matching refspec is okay. */
701 if (remote == local && remote[1] == '\0')
702 continue;
703
704 remote = remote ? (remote + 1) : local;
705 switch (check_ref_format(remote)) {
706 case 0: /* ok */
707 case CHECK_REF_FORMAT_ONELEVEL:
708 /* ok but a single level -- that is fine for
709 * a match pattern.
710 */
711 case CHECK_REF_FORMAT_WILDCARD:
712 /* ok but ends with a pattern-match character */
713 continue;
714 }
715 die("remote part of refspec is not a valid name in %s",
716 heads[i]);
717 }
718 }
719
720 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
721 {
722 struct git_transport_data *data = transport->data;
723 struct send_pack_args args;
724 int ret;
725
726 if (!data->conn) {
727 struct ref *tmp_refs;
728 connect_setup(transport, 1, 0);
729
730 get_remote_heads(data->fd[0], &tmp_refs, 0, NULL, REF_NORMAL,
731 NULL);
732 }
733
734 memset(&args, 0, sizeof(args));
735 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
736 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
737 args.use_thin_pack = data->thin;
738 args.verbose = !!(flags & TRANSPORT_PUSH_VERBOSE);
739 args.quiet = !!(flags & TRANSPORT_PUSH_QUIET);
740 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
741
742 ret = send_pack(&args, data->fd, data->conn, remote_refs,
743 &data->extra_have);
744
745 close(data->fd[1]);
746 close(data->fd[0]);
747 ret |= finish_connect(data->conn);
748 data->conn = NULL;
749
750 return ret;
751 }
752
753 static int disconnect_git(struct transport *transport)
754 {
755 struct git_transport_data *data = transport->data;
756 if (data->conn) {
757 packet_flush(data->fd[1]);
758 close(data->fd[0]);
759 close(data->fd[1]);
760 finish_connect(data->conn);
761 }
762
763 free(data);
764 return 0;
765 }
766
767 static int is_local(const char *url)
768 {
769 const char *colon = strchr(url, ':');
770 const char *slash = strchr(url, '/');
771 return !colon || (slash && slash < colon) ||
772 has_dos_drive_prefix(url);
773 }
774
775 static int is_file(const char *url)
776 {
777 struct stat buf;
778 if (stat(url, &buf))
779 return 0;
780 return S_ISREG(buf.st_mode);
781 }
782
783 struct transport *transport_get(struct remote *remote, const char *url)
784 {
785 struct transport *ret = xcalloc(1, sizeof(*ret));
786
787 if (!remote)
788 die("No remote provided to transport_get()");
789
790 ret->remote = remote;
791 ret->url = url;
792
793 if (!prefixcmp(url, "rsync:")) {
794 ret->get_refs_list = get_refs_via_rsync;
795 ret->fetch = fetch_objs_via_rsync;
796 ret->push = rsync_transport_push;
797
798 } else if (!prefixcmp(url, "http://")
799 || !prefixcmp(url, "https://")
800 || !prefixcmp(url, "ftp://")) {
801 transport_helper_init(ret, "curl");
802 #ifdef NO_CURL
803 error("git was compiled without libcurl support.");
804 #endif
805
806 } else if (is_local(url) && is_file(url)) {
807 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
808 ret->data = data;
809 ret->get_refs_list = get_refs_from_bundle;
810 ret->fetch = fetch_refs_from_bundle;
811 ret->disconnect = close_bundle;
812
813 } else {
814 struct git_transport_data *data = xcalloc(1, sizeof(*data));
815 ret->data = data;
816 ret->set_option = set_git_option;
817 ret->get_refs_list = get_refs_via_connect;
818 ret->fetch = fetch_refs_via_pack;
819 ret->push_refs = git_transport_push;
820 ret->disconnect = disconnect_git;
821
822 data->thin = 1;
823 data->conn = NULL;
824 data->uploadpack = "git-upload-pack";
825 if (remote->uploadpack)
826 data->uploadpack = remote->uploadpack;
827 data->receivepack = "git-receive-pack";
828 if (remote->receivepack)
829 data->receivepack = remote->receivepack;
830 }
831
832 return ret;
833 }
834
835 int transport_set_option(struct transport *transport,
836 const char *name, const char *value)
837 {
838 if (transport->set_option)
839 return transport->set_option(transport, name, value);
840 return 1;
841 }
842
843 int transport_push(struct transport *transport,
844 int refspec_nr, const char **refspec, int flags,
845 int *nonfastforward)
846 {
847 *nonfastforward = 0;
848 verify_remote_names(refspec_nr, refspec);
849
850 if (transport->push)
851 return transport->push(transport, refspec_nr, refspec, flags);
852 if (transport->push_refs) {
853 struct ref *remote_refs =
854 transport->get_refs_list(transport, 1);
855 struct ref *local_refs = get_local_heads();
856 int match_flags = MATCH_REFS_NONE;
857 int verbose = flags & TRANSPORT_PUSH_VERBOSE;
858 int quiet = flags & TRANSPORT_PUSH_QUIET;
859 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
860 int ret;
861
862 if (flags & TRANSPORT_PUSH_ALL)
863 match_flags |= MATCH_REFS_ALL;
864 if (flags & TRANSPORT_PUSH_MIRROR)
865 match_flags |= MATCH_REFS_MIRROR;
866
867 if (match_refs(local_refs, &remote_refs,
868 refspec_nr, refspec, match_flags)) {
869 return -1;
870 }
871
872 ret = transport->push_refs(transport, remote_refs, flags);
873
874 if (!quiet || push_had_errors(remote_refs))
875 print_push_status(transport->url, remote_refs,
876 verbose | porcelain, porcelain,
877 nonfastforward);
878
879 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
880 struct ref *ref;
881 for (ref = remote_refs; ref; ref = ref->next)
882 update_tracking_ref(transport->remote, ref, verbose);
883 }
884
885 if (!quiet && !ret && !refs_pushed(remote_refs))
886 fprintf(stderr, "Everything up-to-date\n");
887 return ret;
888 }
889 return 1;
890 }
891
892 const struct ref *transport_get_remote_refs(struct transport *transport)
893 {
894 if (!transport->remote_refs)
895 transport->remote_refs = transport->get_refs_list(transport, 0);
896 return transport->remote_refs;
897 }
898
899 int transport_fetch_refs(struct transport *transport, const struct ref *refs)
900 {
901 int rc;
902 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
903 const struct ref **heads = NULL;
904 const struct ref *rm;
905
906 for (rm = refs; rm; rm = rm->next) {
907 nr_refs++;
908 if (rm->peer_ref &&
909 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
910 continue;
911 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
912 heads[nr_heads++] = rm;
913 }
914
915 if (!nr_heads) {
916 /*
917 * When deepening of a shallow repository is requested,
918 * then local and remote refs are likely to still be equal.
919 * Just feed them all to the fetch method in that case.
920 * This condition shouldn't be met in a non-deepening fetch
921 * (see builtin-fetch.c:quickfetch()).
922 */
923 heads = xmalloc(nr_refs * sizeof(*heads));
924 for (rm = refs; rm; rm = rm->next)
925 heads[nr_heads++] = rm;
926 }
927
928 rc = transport->fetch(transport, nr_heads, heads);
929 free(heads);
930 return rc;
931 }
932
933 void transport_unlock_pack(struct transport *transport)
934 {
935 if (transport->pack_lockfile) {
936 unlink_or_warn(transport->pack_lockfile);
937 free(transport->pack_lockfile);
938 transport->pack_lockfile = NULL;
939 }
940 }
941
942 int transport_disconnect(struct transport *transport)
943 {
944 int ret = 0;
945 if (transport->disconnect)
946 ret = transport->disconnect(transport);
947 free(transport);
948 return ret;
949 }
950
951 /*
952 * Strip username (and password) from an url and return
953 * it in a newly allocated string.
954 */
955 char *transport_anonymize_url(const char *url)
956 {
957 char *anon_url, *scheme_prefix, *anon_part;
958 size_t anon_len, prefix_len = 0;
959
960 anon_part = strchr(url, '@');
961 if (is_local(url) || !anon_part)
962 goto literal_copy;
963
964 anon_len = strlen(++anon_part);
965 scheme_prefix = strstr(url, "://");
966 if (!scheme_prefix) {
967 if (!strchr(anon_part, ':'))
968 /* cannot be "me@there:/path/name" */
969 goto literal_copy;
970 } else {
971 const char *cp;
972 /* make sure scheme is reasonable */
973 for (cp = url; cp < scheme_prefix; cp++) {
974 switch (*cp) {
975 /* RFC 1738 2.1 */
976 case '+': case '.': case '-':
977 break; /* ok */
978 default:
979 if (isalnum(*cp))
980 break;
981 /* it isn't */
982 goto literal_copy;
983 }
984 }
985 /* @ past the first slash does not count */
986 cp = strchr(scheme_prefix + 3, '/');
987 if (cp && cp < anon_part)
988 goto literal_copy;
989 prefix_len = scheme_prefix - url + 3;
990 }
991 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
992 memcpy(anon_url, url, prefix_len);
993 memcpy(anon_url + prefix_len, anon_part, anon_len);
994 return anon_url;
995 literal_copy:
996 return xstrdup(url);
997 }