?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge branch 'jk/http-auth-redirects' into maint
[git.git] / transport.c
blobde255880a41248857990380d7622512fd18160b0
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 #include "submodule.h"
14 #include "string-list.h"
15
16 /* rsync support */
17
18 /*
19 * We copy packed-refs and refs/ into a temporary file, then read the
20 * loose refs recursively (sorting whenever possible), and then inserting
21 * those packed refs that are not yet in the list (not validating, but
22 * assuming that the file is sorted).
23 *
24 * Appears refactoring this from refs.c is too cumbersome.
25 */
26
27 static int str_cmp(const void *a, const void *b)
28 {
29 const char *s1 = a;
30 const char *s2 = b;
31
32 return strcmp(s1, s2);
33 }
34
35 /* path->buf + name_offset is expected to point to "refs/" */
36
37 static int read_loose_refs(struct strbuf *path, int name_offset,
38 struct ref **tail)
39 {
40 DIR *dir = opendir(path->buf);
41 struct dirent *de;
42 struct {
43 char **entries;
44 int nr, alloc;
45 } list;
46 int i, pathlen;
47
48 if (!dir)
49 return -1;
50
51 memset (&list, 0, sizeof(list));
52
53 while ((de = readdir(dir))) {
54 if (is_dot_or_dotdot(de->d_name))
55 continue;
56 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
57 list.entries[list.nr++] = xstrdup(de->d_name);
58 }
59 closedir(dir);
60
61 /* sort the list */
62
63 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
64
65 pathlen = path->len;
66 strbuf_addch(path, '/');
67
68 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
69 strbuf_addstr(path, list.entries[i]);
70 if (read_loose_refs(path, name_offset, tail)) {
71 int fd = open(path->buf, O_RDONLY);
72 char buffer[40];
73 struct ref *next;
74
75 if (fd < 0)
76 continue;
77 next = alloc_ref(path->buf + name_offset);
78 if (read_in_full(fd, buffer, 40) != 40 ||
79 get_sha1_hex(buffer, next->old_sha1)) {
80 close(fd);
81 free(next);
82 continue;
83 }
84 close(fd);
85 (*tail)->next = next;
86 *tail = next;
87 }
88 }
89 strbuf_setlen(path, pathlen);
90
91 for (i = 0; i < list.nr; i++)
92 free(list.entries[i]);
93 free(list.entries);
94
95 return 0;
96 }
97
98 /* insert the packed refs for which no loose refs were found */
99
100 static void insert_packed_refs(const char *packed_refs, struct ref **list)
101 {
102 FILE *f = fopen(packed_refs, "r");
103 static char buffer[PATH_MAX];
104
105 if (!f)
106 return;
107
108 for (;;) {
109 int cmp = 0; /* assigned before used */
110 int len;
111
112 if (!fgets(buffer, sizeof(buffer), f)) {
113 fclose(f);
114 return;
115 }
116
117 if (hexval(buffer[0]) > 0xf)
118 continue;
119 len = strlen(buffer);
120 if (len && buffer[len - 1] == '\n')
121 buffer[--len] = '\0';
122 if (len < 41)
123 continue;
124 while ((*list)->next &&
125 (cmp = strcmp(buffer + 41,
126 (*list)->next->name)) > 0)
127 list = &(*list)->next;
128 if (!(*list)->next || cmp < 0) {
129 struct ref *next = alloc_ref(buffer + 41);
130 buffer[40] = '\0';
131 if (get_sha1_hex(buffer, next->old_sha1)) {
132 warning ("invalid SHA-1: %s", buffer);
133 free(next);
134 continue;
135 }
136 next->next = (*list)->next;
137 (*list)->next = next;
138 list = &(*list)->next;
139 }
140 }
141 }
142
143 static void set_upstreams(struct transport *transport, struct ref *refs,
144 int pretend)
145 {
146 struct ref *ref;
147 for (ref = refs; ref; ref = ref->next) {
148 const char *localname;
149 const char *tmp;
150 const char *remotename;
151 unsigned char sha[20];
152 int flag = 0;
153 /*
154 * Check suitability for tracking. Must be successful /
155 * already up-to-date ref create/modify (not delete).
156 */
157 if (ref->status != REF_STATUS_OK &&
158 ref->status != REF_STATUS_UPTODATE)
159 continue;
160 if (!ref->peer_ref)
161 continue;
162 if (is_null_sha1(ref->new_sha1))
163 continue;
164
165 /* Follow symbolic refs (mainly for HEAD). */
166 localname = ref->peer_ref->name;
167 remotename = ref->name;
168 tmp = resolve_ref_unsafe(localname, sha, 1, &flag);
169 if (tmp && flag & REF_ISSYMREF &&
170 !prefixcmp(tmp, "refs/heads/"))
171 localname = tmp;
172
173 /* Both source and destination must be local branches. */
174 if (!localname || prefixcmp(localname, "refs/heads/"))
175 continue;
176 if (!remotename || prefixcmp(remotename, "refs/heads/"))
177 continue;
178
179 if (!pretend)
180 install_branch_config(BRANCH_CONFIG_VERBOSE,
181 localname + 11, transport->remote->name,
182 remotename);
183 else
184 printf("Would set upstream of '%s' to '%s' of '%s'\n",
185 localname + 11, remotename + 11,
186 transport->remote->name);
187 }
188 }
189
190 static const char *rsync_url(const char *url)
191 {
192 return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
193 }
194
195 static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
196 {
197 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
198 struct ref dummy = {NULL}, *tail = &dummy;
199 struct child_process rsync;
200 const char *args[5];
201 int temp_dir_len;
202
203 if (for_push)
204 return NULL;
205
206 /* copy the refs to the temporary directory */
207
208 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
209 if (!mkdtemp(temp_dir.buf))
210 die_errno ("Could not make temporary directory");
211 temp_dir_len = temp_dir.len;
212
213 strbuf_addstr(&buf, rsync_url(transport->url));
214 strbuf_addstr(&buf, "/refs");
215
216 memset(&rsync, 0, sizeof(rsync));
217 rsync.argv = args;
218 rsync.stdout_to_stderr = 1;
219 args[0] = "rsync";
220 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
221 args[2] = buf.buf;
222 args[3] = temp_dir.buf;
223 args[4] = NULL;
224
225 if (run_command(&rsync))
226 die ("Could not run rsync to get refs");
227
228 strbuf_reset(&buf);
229 strbuf_addstr(&buf, rsync_url(transport->url));
230 strbuf_addstr(&buf, "/packed-refs");
231
232 args[2] = buf.buf;
233
234 if (run_command(&rsync))
235 die ("Could not run rsync to get refs");
236
237 /* read the copied refs */
238
239 strbuf_addstr(&temp_dir, "/refs");
240 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
241 strbuf_setlen(&temp_dir, temp_dir_len);
242
243 tail = &dummy;
244 strbuf_addstr(&temp_dir, "/packed-refs");
245 insert_packed_refs(temp_dir.buf, &tail);
246 strbuf_setlen(&temp_dir, temp_dir_len);
247
248 if (remove_dir_recursively(&temp_dir, 0))
249 warning ("Error removing temporary directory %s.",
250 temp_dir.buf);
251
252 strbuf_release(&buf);
253 strbuf_release(&temp_dir);
254
255 return dummy.next;
256 }
257
258 static int fetch_objs_via_rsync(struct transport *transport,
259 int nr_objs, struct ref **to_fetch)
260 {
261 struct strbuf buf = STRBUF_INIT;
262 struct child_process rsync;
263 const char *args[8];
264 int result;
265
266 strbuf_addstr(&buf, rsync_url(transport->url));
267 strbuf_addstr(&buf, "/objects/");
268
269 memset(&rsync, 0, sizeof(rsync));
270 rsync.argv = args;
271 rsync.stdout_to_stderr = 1;
272 args[0] = "rsync";
273 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
274 args[2] = "--ignore-existing";
275 args[3] = "--exclude";
276 args[4] = "info";
277 args[5] = buf.buf;
278 args[6] = get_object_directory();
279 args[7] = NULL;
280
281 /* NEEDSWORK: handle one level of alternates */
282 result = run_command(&rsync);
283
284 strbuf_release(&buf);
285
286 return result;
287 }
288
289 static int write_one_ref(const char *name, const unsigned char *sha1,
290 int flags, void *data)
291 {
292 struct strbuf *buf = data;
293 int len = buf->len;
294 FILE *f;
295
296 /* when called via for_each_ref(), flags is non-zero */
297 if (flags && prefixcmp(name, "refs/heads/") &&
298 prefixcmp(name, "refs/tags/"))
299 return 0;
300
301 strbuf_addstr(buf, name);
302 if (safe_create_leading_directories(buf->buf) ||
303 !(f = fopen(buf->buf, "w")) ||
304 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
305 fclose(f))
306 return error("problems writing temporary file %s", buf->buf);
307 strbuf_setlen(buf, len);
308 return 0;
309 }
310
311 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
312 int refspec_nr, const char **refspec)
313 {
314 int i;
315
316 for (i = 0; i < refspec_nr; i++) {
317 unsigned char sha1[20];
318 char *ref;
319
320 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
321 return error("Could not get ref %s", refspec[i]);
322
323 if (write_one_ref(ref, sha1, 0, temp_dir)) {
324 free(ref);
325 return -1;
326 }
327 free(ref);
328 }
329 return 0;
330 }
331
332 static int rsync_transport_push(struct transport *transport,
333 int refspec_nr, const char **refspec, int flags)
334 {
335 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
336 int result = 0, i;
337 struct child_process rsync;
338 const char *args[10];
339
340 if (flags & TRANSPORT_PUSH_MIRROR)
341 return error("rsync transport does not support mirror mode");
342
343 /* first push the objects */
344
345 strbuf_addstr(&buf, rsync_url(transport->url));
346 strbuf_addch(&buf, '/');
347
348 memset(&rsync, 0, sizeof(rsync));
349 rsync.argv = args;
350 rsync.stdout_to_stderr = 1;
351 i = 0;
352 args[i++] = "rsync";
353 args[i++] = "-a";
354 if (flags & TRANSPORT_PUSH_DRY_RUN)
355 args[i++] = "--dry-run";
356 if (transport->verbose > 1)
357 args[i++] = "-v";
358 args[i++] = "--ignore-existing";
359 args[i++] = "--exclude";
360 args[i++] = "info";
361 args[i++] = get_object_directory();
362 args[i++] = buf.buf;
363 args[i++] = NULL;
364
365 if (run_command(&rsync))
366 return error("Could not push objects to %s",
367 rsync_url(transport->url));
368
369 /* copy the refs to the temporary directory; they could be packed. */
370
371 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
372 if (!mkdtemp(temp_dir.buf))
373 die_errno ("Could not make temporary directory");
374 strbuf_addch(&temp_dir, '/');
375
376 if (flags & TRANSPORT_PUSH_ALL) {
377 if (for_each_ref(write_one_ref, &temp_dir))
378 return -1;
379 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
380 return -1;
381
382 i = 2;
383 if (flags & TRANSPORT_PUSH_DRY_RUN)
384 args[i++] = "--dry-run";
385 if (!(flags & TRANSPORT_PUSH_FORCE))
386 args[i++] = "--ignore-existing";
387 args[i++] = temp_dir.buf;
388 args[i++] = rsync_url(transport->url);
389 args[i++] = NULL;
390 if (run_command(&rsync))
391 result = error("Could not push to %s",
392 rsync_url(transport->url));
393
394 if (remove_dir_recursively(&temp_dir, 0))
395 warning ("Could not remove temporary directory %s.",
396 temp_dir.buf);
397
398 strbuf_release(&buf);
399 strbuf_release(&temp_dir);
400
401 return result;
402 }
403
404 struct bundle_transport_data {
405 int fd;
406 struct bundle_header header;
407 };
408
409 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
410 {
411 struct bundle_transport_data *data = transport->data;
412 struct ref *result = NULL;
413 int i;
414
415 if (for_push)
416 return NULL;
417
418 if (data->fd > 0)
419 close(data->fd);
420 data->fd = read_bundle_header(transport->url, &data->header);
421 if (data->fd < 0)
422 die ("Could not read bundle '%s'.", transport->url);
423 for (i = 0; i < data->header.references.nr; i++) {
424 struct ref_list_entry *e = data->header.references.list + i;
425 struct ref *ref = alloc_ref(e->name);
426 hashcpy(ref->old_sha1, e->sha1);
427 ref->next = result;
428 result = ref;
429 }
430 return result;
431 }
432
433 static int fetch_refs_from_bundle(struct transport *transport,
434 int nr_heads, struct ref **to_fetch)
435 {
436 struct bundle_transport_data *data = transport->data;
437 return unbundle(&data->header, data->fd,
438 transport->progress ? BUNDLE_VERBOSE : 0);
439 }
440
441 static int close_bundle(struct transport *transport)
442 {
443 struct bundle_transport_data *data = transport->data;
444 if (data->fd > 0)
445 close(data->fd);
446 free(data);
447 return 0;
448 }
449
450 struct git_transport_data {
451 struct git_transport_options options;
452 struct child_process *conn;
453 int fd[2];
454 unsigned got_remote_heads : 1;
455 struct extra_have_objects extra_have;
456 };
457
458 static int set_git_option(struct git_transport_options *opts,
459 const char *name, const char *value)
460 {
461 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
462 opts->uploadpack = value;
463 return 0;
464 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
465 opts->receivepack = value;
466 return 0;
467 } else if (!strcmp(name, TRANS_OPT_THIN)) {
468 opts->thin = !!value;
469 return 0;
470 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
471 opts->followtags = !!value;
472 return 0;
473 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
474 opts->keep = !!value;
475 return 0;
476 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
477 if (!value)
478 opts->depth = 0;
479 else {
480 char *end;
481 opts->depth = strtol(value, &end, 0);
482 if (*end)
483 die("transport: invalid depth option '%s'", value);
484 }
485 return 0;
486 }
487 return 1;
488 }
489
490 static int connect_setup(struct transport *transport, int for_push, int verbose)
491 {
492 struct git_transport_data *data = transport->data;
493
494 if (data->conn)
495 return 0;
496
497 data->conn = git_connect(data->fd, transport->url,
498 for_push ? data->options.receivepack :
499 data->options.uploadpack,
500 verbose ? CONNECT_VERBOSE : 0);
501
502 return 0;
503 }
504
505 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
506 {
507 struct git_transport_data *data = transport->data;
508 struct ref *refs;
509
510 connect_setup(transport, for_push, 0);
511 get_remote_heads(data->fd[0], NULL, 0, &refs,
512 for_push ? REF_NORMAL : 0, &data->extra_have);
513 data->got_remote_heads = 1;
514
515 return refs;
516 }
517
518 static int fetch_refs_via_pack(struct transport *transport,
519 int nr_heads, struct ref **to_fetch)
520 {
521 struct git_transport_data *data = transport->data;
522 const struct ref *refs;
523 char *dest = xstrdup(transport->url);
524 struct fetch_pack_args args;
525 struct ref *refs_tmp = NULL;
526
527 memset(&args, 0, sizeof(args));
528 args.uploadpack = data->options.uploadpack;
529 args.keep_pack = data->options.keep;
530 args.lock_pack = 1;
531 args.use_thin_pack = data->options.thin;
532 args.include_tag = data->options.followtags;
533 args.verbose = (transport->verbose > 1);
534 args.quiet = (transport->verbose < 0);
535 args.no_progress = !transport->progress;
536 args.depth = data->options.depth;
537 args.check_self_contained_and_connected =
538 data->options.check_self_contained_and_connected;
539
540 if (!data->got_remote_heads) {
541 connect_setup(transport, 0, 0);
542 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 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, to_fetch, nr_heads,
549 &transport->pack_lockfile);
550 close(data->fd[0]);
551 close(data->fd[1]);
552 if (finish_connect(data->conn))
553 refs = NULL;
554 data->conn = NULL;
555 data->got_remote_heads = 0;
556 data->options.self_contained_and_connected =
557 args.self_contained_and_connected;
558
559 free_refs(refs_tmp);
560
561 free(dest);
562 return (refs ? 0 : -1);
563 }
564
565 static int push_had_errors(struct ref *ref)
566 {
567 for (; ref; ref = ref->next) {
568 switch (ref->status) {
569 case REF_STATUS_NONE:
570 case REF_STATUS_UPTODATE:
571 case REF_STATUS_OK:
572 break;
573 default:
574 return 1;
575 }
576 }
577 return 0;
578 }
579
580 int transport_refs_pushed(struct ref *ref)
581 {
582 for (; ref; ref = ref->next) {
583 switch(ref->status) {
584 case REF_STATUS_NONE:
585 case REF_STATUS_UPTODATE:
586 break;
587 default:
588 return 1;
589 }
590 }
591 return 0;
592 }
593
594 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
595 {
596 struct refspec rs;
597
598 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
599 return;
600
601 rs.src = ref->name;
602 rs.dst = NULL;
603
604 if (!remote_find_tracking(remote, &rs)) {
605 if (verbose)
606 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
607 if (ref->deletion) {
608 delete_ref(rs.dst, NULL, 0);
609 } else
610 update_ref("update by push", rs.dst,
611 ref->new_sha1, NULL, 0, 0);
612 free(rs.dst);
613 }
614 }
615
616 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
617 {
618 if (porcelain) {
619 if (from)
620 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
621 else
622 fprintf(stdout, "%c\t:%s\t", flag, to->name);
623 if (msg)
624 fprintf(stdout, "%s (%s)\n", summary, msg);
625 else
626 fprintf(stdout, "%s\n", summary);
627 } else {
628 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
629 if (from)
630 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
631 else
632 fputs(prettify_refname(to->name), stderr);
633 if (msg) {
634 fputs(" (", stderr);
635 fputs(msg, stderr);
636 fputc(')', stderr);
637 }
638 fputc('\n', stderr);
639 }
640 }
641
642 static const char *status_abbrev(unsigned char sha1[20])
643 {
644 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
645 }
646
647 static void print_ok_ref_status(struct ref *ref, int porcelain)
648 {
649 if (ref->deletion)
650 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
651 else if (is_null_sha1(ref->old_sha1))
652 print_ref_status('*',
653 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
654 "[new branch]"),
655 ref, ref->peer_ref, NULL, porcelain);
656 else {
657 char quickref[84];
658 char type;
659 const char *msg;
660
661 strcpy(quickref, status_abbrev(ref->old_sha1));
662 if (ref->forced_update) {
663 strcat(quickref, "...");
664 type = '+';
665 msg = "forced update";
666 } else {
667 strcat(quickref, "..");
668 type = ' ';
669 msg = NULL;
670 }
671 strcat(quickref, status_abbrev(ref->new_sha1));
672
673 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
674 }
675 }
676
677 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
678 {
679 if (!count)
680 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
681
682 switch(ref->status) {
683 case REF_STATUS_NONE:
684 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
685 break;
686 case REF_STATUS_REJECT_NODELETE:
687 print_ref_status('!', "[rejected]", ref, NULL,
688 "remote does not support deleting refs", porcelain);
689 break;
690 case REF_STATUS_UPTODATE:
691 print_ref_status('=', "[up to date]", ref,
692 ref->peer_ref, NULL, porcelain);
693 break;
694 case REF_STATUS_REJECT_NONFASTFORWARD:
695 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
696 "non-fast-forward", porcelain);
697 break;
698 case REF_STATUS_REJECT_ALREADY_EXISTS:
699 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
700 "already exists", porcelain);
701 break;
702 case REF_STATUS_REJECT_FETCH_FIRST:
703 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
704 "fetch first", porcelain);
705 break;
706 case REF_STATUS_REJECT_NEEDS_FORCE:
707 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
708 "needs force", porcelain);
709 break;
710 case REF_STATUS_REMOTE_REJECT:
711 print_ref_status('!', "[remote rejected]", ref,
712 ref->deletion ? NULL : ref->peer_ref,
713 ref->remote_status, porcelain);
714 break;
715 case REF_STATUS_EXPECTING_REPORT:
716 print_ref_status('!', "[remote failure]", ref,
717 ref->deletion ? NULL : ref->peer_ref,
718 "remote failed to report status", porcelain);
719 break;
720 case REF_STATUS_OK:
721 print_ok_ref_status(ref, porcelain);
722 break;
723 }
724
725 return 1;
726 }
727
728 void transport_print_push_status(const char *dest, struct ref *refs,
729 int verbose, int porcelain, unsigned int *reject_reasons)
730 {
731 struct ref *ref;
732 int n = 0;
733 unsigned char head_sha1[20];
734 char *head;
735
736 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
737
738 if (verbose) {
739 for (ref = refs; ref; ref = ref->next)
740 if (ref->status == REF_STATUS_UPTODATE)
741 n += print_one_push_status(ref, dest, n, porcelain);
742 }
743
744 for (ref = refs; ref; ref = ref->next)
745 if (ref->status == REF_STATUS_OK)
746 n += print_one_push_status(ref, dest, n, porcelain);
747
748 *reject_reasons = 0;
749 for (ref = refs; ref; ref = ref->next) {
750 if (ref->status != REF_STATUS_NONE &&
751 ref->status != REF_STATUS_UPTODATE &&
752 ref->status != REF_STATUS_OK)
753 n += print_one_push_status(ref, dest, n, porcelain);
754 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
755 if (head != NULL && !strcmp(head, ref->name))
756 *reject_reasons |= REJECT_NON_FF_HEAD;
757 else
758 *reject_reasons |= REJECT_NON_FF_OTHER;
759 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
760 *reject_reasons |= REJECT_ALREADY_EXISTS;
761 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
762 *reject_reasons |= REJECT_FETCH_FIRST;
763 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
764 *reject_reasons |= REJECT_NEEDS_FORCE;
765 }
766 }
767 }
768
769 void transport_verify_remote_names(int nr_heads, const char **heads)
770 {
771 int i;
772
773 for (i = 0; i < nr_heads; i++) {
774 const char *local = heads[i];
775 const char *remote = strrchr(heads[i], ':');
776
777 if (*local == '+')
778 local++;
779
780 /* A matching refspec is okay. */
781 if (remote == local && remote[1] == '\0')
782 continue;
783
784 remote = remote ? (remote + 1) : local;
785 if (check_refname_format(remote,
786 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
787 die("remote part of refspec is not a valid name in %s",
788 heads[i]);
789 }
790 }
791
792 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
793 {
794 struct git_transport_data *data = transport->data;
795 struct send_pack_args args;
796 int ret;
797
798 if (!data->got_remote_heads) {
799 struct ref *tmp_refs;
800 connect_setup(transport, 1, 0);
801
802 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL, NULL);
803 data->got_remote_heads = 1;
804 }
805
806 memset(&args, 0, sizeof(args));
807 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
808 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
809 args.use_thin_pack = data->options.thin;
810 args.verbose = (transport->verbose > 0);
811 args.quiet = (transport->verbose < 0);
812 args.progress = transport->progress;
813 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
814 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
815
816 ret = send_pack(&args, data->fd, data->conn, remote_refs,
817 &data->extra_have);
818
819 close(data->fd[1]);
820 close(data->fd[0]);
821 ret |= finish_connect(data->conn);
822 data->conn = NULL;
823 data->got_remote_heads = 0;
824
825 return ret;
826 }
827
828 static int connect_git(struct transport *transport, const char *name,
829 const char *executable, int fd[2])
830 {
831 struct git_transport_data *data = transport->data;
832 data->conn = git_connect(data->fd, transport->url,
833 executable, 0);
834 fd[0] = data->fd[0];
835 fd[1] = data->fd[1];
836 return 0;
837 }
838
839 static int disconnect_git(struct transport *transport)
840 {
841 struct git_transport_data *data = transport->data;
842 if (data->conn) {
843 if (data->got_remote_heads)
844 packet_flush(data->fd[1]);
845 close(data->fd[0]);
846 close(data->fd[1]);
847 finish_connect(data->conn);
848 }
849
850 free(data);
851 return 0;
852 }
853
854 void transport_take_over(struct transport *transport,
855 struct child_process *child)
856 {
857 struct git_transport_data *data;
858
859 if (!transport->smart_options)
860 die("Bug detected: Taking over transport requires non-NULL "
861 "smart_options field.");
862
863 data = xcalloc(1, sizeof(*data));
864 data->options = *transport->smart_options;
865 data->conn = child;
866 data->fd[0] = data->conn->out;
867 data->fd[1] = data->conn->in;
868 data->got_remote_heads = 0;
869 transport->data = data;
870
871 transport->set_option = NULL;
872 transport->get_refs_list = get_refs_via_connect;
873 transport->fetch = fetch_refs_via_pack;
874 transport->push = NULL;
875 transport->push_refs = git_transport_push;
876 transport->disconnect = disconnect_git;
877 transport->smart_options = &(data->options);
878
879 transport->cannot_reuse = 1;
880 }
881
882 static int is_local(const char *url)
883 {
884 const char *colon = strchr(url, ':');
885 const char *slash = strchr(url, '/');
886 return !colon || (slash && slash < colon) ||
887 has_dos_drive_prefix(url);
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 (!prefixcmp(p, "::"))
928 helper = xstrndup(url, p - url);
929 }
930
931 if (helper) {
932 transport_helper_init(ret, helper);
933 } else if (!prefixcmp(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 (is_local(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 || !prefixcmp(url, "file://")
947 || !prefixcmp(url, "git://")
948 || !prefixcmp(url, "ssh://")
949 || !prefixcmp(url, "git+ssh://")
950 || !prefixcmp(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;
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 memset(&proc, 0, sizeof(proc));
1068 proc.argv = argv;
1069 proc.in = -1;
1070
1071 if (start_command(&proc)) {
1072 finish_command(&proc);
1073 return -1;
1074 }
1075
1076 strbuf_init(&buf, 256);
1077
1078 for (r = remote_refs; r; r = r->next) {
1079 if (!r->peer_ref) continue;
1080 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) 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 transport->get_refs_list(transport, 1);
1123 struct ref *local_refs = get_local_heads();
1124 int match_flags = MATCH_REFS_NONE;
1125 int verbose = (transport->verbose > 0);
1126 int quiet = (transport->verbose < 0);
1127 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1128 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1129 int push_ret, ret, err;
1130
1131 if (flags & TRANSPORT_PUSH_ALL)
1132 match_flags |= MATCH_REFS_ALL;
1133 if (flags & TRANSPORT_PUSH_MIRROR)
1134 match_flags |= MATCH_REFS_MIRROR;
1135 if (flags & TRANSPORT_PUSH_PRUNE)
1136 match_flags |= MATCH_REFS_PRUNE;
1137 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1138 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1139
1140 if (match_push_refs(local_refs, &remote_refs,
1141 refspec_nr, refspec, match_flags)) {
1142 return -1;
1143 }
1144
1145 set_ref_status_for_push(remote_refs,
1146 flags & TRANSPORT_PUSH_MIRROR,
1147 flags & TRANSPORT_PUSH_FORCE);
1148
1149 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1150 if (run_pre_push_hook(transport, remote_refs))
1151 return -1;
1152
1153 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1154 struct ref *ref = remote_refs;
1155 for (; ref; ref = ref->next)
1156 if (!is_null_sha1(ref->new_sha1) &&
1157 !push_unpushed_submodules(ref->new_sha1,
1158 transport->remote->name))
1159 die ("Failed to push all needed submodules!");
1160 }
1161
1162 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1163 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1164 struct ref *ref = remote_refs;
1165 struct string_list needs_pushing;
1166
1167 memset(&needs_pushing, 0, sizeof(struct string_list));
1168 needs_pushing.strdup_strings = 1;
1169 for (; ref; ref = ref->next)
1170 if (!is_null_sha1(ref->new_sha1) &&
1171 find_unpushed_submodules(ref->new_sha1,
1172 transport->remote->name, &needs_pushing))
1173 die_with_unpushed_submodules(&needs_pushing);
1174 }
1175
1176 push_ret = transport->push_refs(transport, remote_refs, flags);
1177 err = push_had_errors(remote_refs);
1178 ret = push_ret | err;
1179
1180 if (!quiet || err)
1181 transport_print_push_status(transport->url, remote_refs,
1182 verbose | porcelain, porcelain,
1183 reject_reasons);
1184
1185 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1186 set_upstreams(transport, remote_refs, pretend);
1187
1188 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1189 struct ref *ref;
1190 for (ref = remote_refs; ref; ref = ref->next)
1191 transport_update_tracking_ref(transport->remote, ref, verbose);
1192 }
1193
1194 if (porcelain && !push_ret)
1195 puts("Done");
1196 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1197 fprintf(stderr, "Everything up-to-date\n");
1198
1199 return ret;
1200 }
1201 return 1;
1202 }
1203
1204 const struct ref *transport_get_remote_refs(struct transport *transport)
1205 {
1206 if (!transport->got_remote_refs) {
1207 transport->remote_refs = transport->get_refs_list(transport, 0);
1208 transport->got_remote_refs = 1;
1209 }
1210
1211 return transport->remote_refs;
1212 }
1213
1214 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1215 {
1216 int rc;
1217 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1218 struct ref **heads = NULL;
1219 struct ref *rm;
1220
1221 for (rm = refs; rm; rm = rm->next) {
1222 nr_refs++;
1223 if (rm->peer_ref &&
1224 !is_null_sha1(rm->old_sha1) &&
1225 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1226 continue;
1227 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1228 heads[nr_heads++] = rm;
1229 }
1230
1231 if (!nr_heads) {
1232 /*
1233 * When deepening of a shallow repository is requested,
1234 * then local and remote refs are likely to still be equal.
1235 * Just feed them all to the fetch method in that case.
1236 * This condition shouldn't be met in a non-deepening fetch
1237 * (see builtin/fetch.c:quickfetch()).
1238 */
1239 heads = xmalloc(nr_refs * sizeof(*heads));
1240 for (rm = refs; rm; rm = rm->next)
1241 heads[nr_heads++] = rm;
1242 }
1243
1244 rc = transport->fetch(transport, nr_heads, heads);
1245
1246 free(heads);
1247 return rc;
1248 }
1249
1250 void transport_unlock_pack(struct transport *transport)
1251 {
1252 if (transport->pack_lockfile) {
1253 unlink_or_warn(transport->pack_lockfile);
1254 free(transport->pack_lockfile);
1255 transport->pack_lockfile = NULL;
1256 }
1257 }
1258
1259 int transport_connect(struct transport *transport, const char *name,
1260 const char *exec, int fd[2])
1261 {
1262 if (transport->connect)
1263 return transport->connect(transport, name, exec, fd);
1264 else
1265 die("Operation not supported by protocol");
1266 }
1267
1268 int transport_disconnect(struct transport *transport)
1269 {
1270 int ret = 0;
1271 if (transport->disconnect)
1272 ret = transport->disconnect(transport);
1273 free(transport);
1274 return ret;
1275 }
1276
1277 /*
1278 * Strip username (and password) from a URL and return
1279 * it in a newly allocated string.
1280 */
1281 char *transport_anonymize_url(const char *url)
1282 {
1283 char *anon_url, *scheme_prefix, *anon_part;
1284 size_t anon_len, prefix_len = 0;
1285
1286 anon_part = strchr(url, '@');
1287 if (is_local(url) || !anon_part)
1288 goto literal_copy;
1289
1290 anon_len = strlen(++anon_part);
1291 scheme_prefix = strstr(url, "://");
1292 if (!scheme_prefix) {
1293 if (!strchr(anon_part, ':'))
1294 /* cannot be "me@there:/path/name" */
1295 goto literal_copy;
1296 } else {
1297 const char *cp;
1298 /* make sure scheme is reasonable */
1299 for (cp = url; cp < scheme_prefix; cp++) {
1300 switch (*cp) {
1301 /* RFC 1738 2.1 */
1302 case '+': case '.': case '-':
1303 break; /* ok */
1304 default:
1305 if (isalnum(*cp))
1306 break;
1307 /* it isn't */
1308 goto literal_copy;
1309 }
1310 }
1311 /* @ past the first slash does not count */
1312 cp = strchr(scheme_prefix + 3, '/');
1313 if (cp && cp < anon_part)
1314 goto literal_copy;
1315 prefix_len = scheme_prefix - url + 3;
1316 }
1317 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1318 memcpy(anon_url, url, prefix_len);
1319 memcpy(anon_url + prefix_len, anon_part, anon_len);
1320 return anon_url;
1321 literal_copy:
1322 return xstrdup(url);
1323 }
1324
1325 struct alternate_refs_data {
1326 alternate_ref_fn *fn;
1327 void *data;
1328 };
1329
1330 static int refs_from_alternate_cb(struct alternate_object_database *e,
1331 void *data)
1332 {
1333 char *other;
1334 size_t len;
1335 struct remote *remote;
1336 struct transport *transport;
1337 const struct ref *extra;
1338 struct alternate_refs_data *cb = data;
1339
1340 e->name[-1] = '\0';
1341 other = xstrdup(real_path(e->base));
1342 e->name[-1] = '/';
1343 len = strlen(other);
1344
1345 while (other[len-1] == '/')
1346 other[--len] = '\0';
1347 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1348 return 0;
1349 /* Is this a git repository with refs? */
1350 memcpy(other + len - 8, "/refs", 6);
1351 if (!is_directory(other))
1352 return 0;
1353 other[len - 8] = '\0';
1354 remote = remote_get(other);
1355 transport = transport_get(remote, other);
1356 for (extra = transport_get_remote_refs(transport);
1357 extra;
1358 extra = extra->next)
1359 cb->fn(extra, cb->data);
1360 transport_disconnect(transport);
1361 free(other);
1362 return 0;
1363 }
1364
1365 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1366 {
1367 struct alternate_refs_data cb;
1368 cb.fn = fn;
1369 cb.data = data;
1370 foreach_alt_odb(refs_from_alternate_cb, &cb);
1371 }
The Best VCS Around