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Merge branch 'sk/mingw-main'
[alt-git.git] / transport.c
blob59c9727d8d63d548001513c1560b5c7a7e065b95
1 #include "cache.h"
2 #include "transport.h"
3 #include "run-command.h"
4 #include "pkt-line.h"
5 #include "fetch-pack.h"
6 #include "remote.h"
7 #include "connect.h"
8 #include "send-pack.h"
9 #include "walker.h"
10 #include "bundle.h"
11 #include "dir.h"
12 #include "refs.h"
13 #include "branch.h"
14 #include "url.h"
15 #include "submodule.h"
16 #include "string-list.h"
17 #include "sha1-array.h"
18
19 /* rsync support */
20
21 /*
22 * We copy packed-refs and refs/ into a temporary file, then read the
23 * loose refs recursively (sorting whenever possible), and then inserting
24 * those packed refs that are not yet in the list (not validating, but
25 * assuming that the file is sorted).
26 *
27 * Appears refactoring this from refs.c is too cumbersome.
28 */
29
30 static int str_cmp(const void *a, const void *b)
31 {
32 const char *s1 = a;
33 const char *s2 = b;
34
35 return strcmp(s1, s2);
36 }
37
38 /* path->buf + name_offset is expected to point to "refs/" */
39
40 static int read_loose_refs(struct strbuf *path, int name_offset,
41 struct ref **tail)
42 {
43 DIR *dir = opendir(path->buf);
44 struct dirent *de;
45 struct {
46 char **entries;
47 int nr, alloc;
48 } list;
49 int i, pathlen;
50
51 if (!dir)
52 return -1;
53
54 memset (&list, 0, sizeof(list));
55
56 while ((de = readdir(dir))) {
57 if (is_dot_or_dotdot(de->d_name))
58 continue;
59 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
60 list.entries[list.nr++] = xstrdup(de->d_name);
61 }
62 closedir(dir);
63
64 /* sort the list */
65
66 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
67
68 pathlen = path->len;
69 strbuf_addch(path, '/');
70
71 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
72 strbuf_addstr(path, list.entries[i]);
73 if (read_loose_refs(path, name_offset, tail)) {
74 int fd = open(path->buf, O_RDONLY);
75 char buffer[40];
76 struct ref *next;
77
78 if (fd < 0)
79 continue;
80 next = alloc_ref(path->buf + name_offset);
81 if (read_in_full(fd, buffer, 40) != 40 ||
82 get_sha1_hex(buffer, next->old_sha1)) {
83 close(fd);
84 free(next);
85 continue;
86 }
87 close(fd);
88 (*tail)->next = next;
89 *tail = next;
90 }
91 }
92 strbuf_setlen(path, pathlen);
93
94 for (i = 0; i < list.nr; i++)
95 free(list.entries[i]);
96 free(list.entries);
97
98 return 0;
99 }
100
101 /* insert the packed refs for which no loose refs were found */
102
103 static void insert_packed_refs(const char *packed_refs, struct ref **list)
104 {
105 FILE *f = fopen(packed_refs, "r");
106 static char buffer[PATH_MAX];
107
108 if (!f)
109 return;
110
111 for (;;) {
112 int cmp = 0; /* assigned before used */
113 int len;
114
115 if (!fgets(buffer, sizeof(buffer), f)) {
116 fclose(f);
117 return;
118 }
119
120 if (hexval(buffer[0]) > 0xf)
121 continue;
122 len = strlen(buffer);
123 if (len && buffer[len - 1] == '\n')
124 buffer[--len] = '\0';
125 if (len < 41)
126 continue;
127 while ((*list)->next &&
128 (cmp = strcmp(buffer + 41,
129 (*list)->next->name)) > 0)
130 list = &(*list)->next;
131 if (!(*list)->next || cmp < 0) {
132 struct ref *next = alloc_ref(buffer + 41);
133 buffer[40] = '\0';
134 if (get_sha1_hex(buffer, next->old_sha1)) {
135 warning ("invalid SHA-1: %s", buffer);
136 free(next);
137 continue;
138 }
139 next->next = (*list)->next;
140 (*list)->next = next;
141 list = &(*list)->next;
142 }
143 }
144 }
145
146 static void set_upstreams(struct transport *transport, struct ref *refs,
147 int pretend)
148 {
149 struct ref *ref;
150 for (ref = refs; ref; ref = ref->next) {
151 const char *localname;
152 const char *tmp;
153 const char *remotename;
154 unsigned char sha[20];
155 int flag = 0;
156 /*
157 * Check suitability for tracking. Must be successful /
158 * already up-to-date ref create/modify (not delete).
159 */
160 if (ref->status != REF_STATUS_OK &&
161 ref->status != REF_STATUS_UPTODATE)
162 continue;
163 if (!ref->peer_ref)
164 continue;
165 if (is_null_sha1(ref->new_sha1))
166 continue;
167
168 /* Follow symbolic refs (mainly for HEAD). */
169 localname = ref->peer_ref->name;
170 remotename = ref->name;
171 tmp = resolve_ref_unsafe(localname, sha, 1, &flag);
172 if (tmp && flag & REF_ISSYMREF &&
173 starts_with(tmp, "refs/heads/"))
174 localname = tmp;
175
176 /* Both source and destination must be local branches. */
177 if (!localname || !starts_with(localname, "refs/heads/"))
178 continue;
179 if (!remotename || !starts_with(remotename, "refs/heads/"))
180 continue;
181
182 if (!pretend)
183 install_branch_config(BRANCH_CONFIG_VERBOSE,
184 localname + 11, transport->remote->name,
185 remotename);
186 else
187 printf("Would set upstream of '%s' to '%s' of '%s'\n",
188 localname + 11, remotename + 11,
189 transport->remote->name);
190 }
191 }
192
193 static const char *rsync_url(const char *url)
194 {
195 if (!starts_with(url, "rsync://"))
196 skip_prefix(url, "rsync:", &url);
197 return url;
198 }
199
200 static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
201 {
202 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
203 struct ref dummy = {NULL}, *tail = &dummy;
204 struct child_process rsync;
205 const char *args[5];
206 int temp_dir_len;
207
208 if (for_push)
209 return NULL;
210
211 /* copy the refs to the temporary directory */
212
213 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
214 if (!mkdtemp(temp_dir.buf))
215 die_errno ("Could not make temporary directory");
216 temp_dir_len = temp_dir.len;
217
218 strbuf_addstr(&buf, rsync_url(transport->url));
219 strbuf_addstr(&buf, "/refs");
220
221 memset(&rsync, 0, sizeof(rsync));
222 rsync.argv = args;
223 rsync.stdout_to_stderr = 1;
224 args[0] = "rsync";
225 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
226 args[2] = buf.buf;
227 args[3] = temp_dir.buf;
228 args[4] = NULL;
229
230 if (run_command(&rsync))
231 die ("Could not run rsync to get refs");
232
233 strbuf_reset(&buf);
234 strbuf_addstr(&buf, rsync_url(transport->url));
235 strbuf_addstr(&buf, "/packed-refs");
236
237 args[2] = buf.buf;
238
239 if (run_command(&rsync))
240 die ("Could not run rsync to get refs");
241
242 /* read the copied refs */
243
244 strbuf_addstr(&temp_dir, "/refs");
245 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
246 strbuf_setlen(&temp_dir, temp_dir_len);
247
248 tail = &dummy;
249 strbuf_addstr(&temp_dir, "/packed-refs");
250 insert_packed_refs(temp_dir.buf, &tail);
251 strbuf_setlen(&temp_dir, temp_dir_len);
252
253 if (remove_dir_recursively(&temp_dir, 0))
254 warning ("Error removing temporary directory %s.",
255 temp_dir.buf);
256
257 strbuf_release(&buf);
258 strbuf_release(&temp_dir);
259
260 return dummy.next;
261 }
262
263 static int fetch_objs_via_rsync(struct transport *transport,
264 int nr_objs, struct ref **to_fetch)
265 {
266 struct strbuf buf = STRBUF_INIT;
267 struct child_process rsync;
268 const char *args[8];
269 int result;
270
271 strbuf_addstr(&buf, rsync_url(transport->url));
272 strbuf_addstr(&buf, "/objects/");
273
274 memset(&rsync, 0, sizeof(rsync));
275 rsync.argv = args;
276 rsync.stdout_to_stderr = 1;
277 args[0] = "rsync";
278 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
279 args[2] = "--ignore-existing";
280 args[3] = "--exclude";
281 args[4] = "info";
282 args[5] = buf.buf;
283 args[6] = get_object_directory();
284 args[7] = NULL;
285
286 /* NEEDSWORK: handle one level of alternates */
287 result = run_command(&rsync);
288
289 strbuf_release(&buf);
290
291 return result;
292 }
293
294 static int write_one_ref(const char *name, const unsigned char *sha1,
295 int flags, void *data)
296 {
297 struct strbuf *buf = data;
298 int len = buf->len;
299 FILE *f;
300
301 /* when called via for_each_ref(), flags is non-zero */
302 if (flags && !starts_with(name, "refs/heads/") &&
303 !starts_with(name, "refs/tags/"))
304 return 0;
305
306 strbuf_addstr(buf, name);
307 if (safe_create_leading_directories(buf->buf) ||
308 !(f = fopen(buf->buf, "w")) ||
309 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
310 fclose(f))
311 return error("problems writing temporary file %s", buf->buf);
312 strbuf_setlen(buf, len);
313 return 0;
314 }
315
316 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
317 int refspec_nr, const char **refspec)
318 {
319 int i;
320
321 for (i = 0; i < refspec_nr; i++) {
322 unsigned char sha1[20];
323 char *ref;
324
325 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
326 return error("Could not get ref %s", refspec[i]);
327
328 if (write_one_ref(ref, sha1, 0, temp_dir)) {
329 free(ref);
330 return -1;
331 }
332 free(ref);
333 }
334 return 0;
335 }
336
337 static int rsync_transport_push(struct transport *transport,
338 int refspec_nr, const char **refspec, int flags)
339 {
340 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
341 int result = 0, i;
342 struct child_process rsync;
343 const char *args[10];
344
345 if (flags & TRANSPORT_PUSH_MIRROR)
346 return error("rsync transport does not support mirror mode");
347
348 /* first push the objects */
349
350 strbuf_addstr(&buf, rsync_url(transport->url));
351 strbuf_addch(&buf, '/');
352
353 memset(&rsync, 0, sizeof(rsync));
354 rsync.argv = args;
355 rsync.stdout_to_stderr = 1;
356 i = 0;
357 args[i++] = "rsync";
358 args[i++] = "-a";
359 if (flags & TRANSPORT_PUSH_DRY_RUN)
360 args[i++] = "--dry-run";
361 if (transport->verbose > 1)
362 args[i++] = "-v";
363 args[i++] = "--ignore-existing";
364 args[i++] = "--exclude";
365 args[i++] = "info";
366 args[i++] = get_object_directory();
367 args[i++] = buf.buf;
368 args[i++] = NULL;
369
370 if (run_command(&rsync))
371 return error("Could not push objects to %s",
372 rsync_url(transport->url));
373
374 /* copy the refs to the temporary directory; they could be packed. */
375
376 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
377 if (!mkdtemp(temp_dir.buf))
378 die_errno ("Could not make temporary directory");
379 strbuf_addch(&temp_dir, '/');
380
381 if (flags & TRANSPORT_PUSH_ALL) {
382 if (for_each_ref(write_one_ref, &temp_dir))
383 return -1;
384 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
385 return -1;
386
387 i = 2;
388 if (flags & TRANSPORT_PUSH_DRY_RUN)
389 args[i++] = "--dry-run";
390 if (!(flags & TRANSPORT_PUSH_FORCE))
391 args[i++] = "--ignore-existing";
392 args[i++] = temp_dir.buf;
393 args[i++] = rsync_url(transport->url);
394 args[i++] = NULL;
395 if (run_command(&rsync))
396 result = error("Could not push to %s",
397 rsync_url(transport->url));
398
399 if (remove_dir_recursively(&temp_dir, 0))
400 warning ("Could not remove temporary directory %s.",
401 temp_dir.buf);
402
403 strbuf_release(&buf);
404 strbuf_release(&temp_dir);
405
406 return result;
407 }
408
409 struct bundle_transport_data {
410 int fd;
411 struct bundle_header header;
412 };
413
414 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
415 {
416 struct bundle_transport_data *data = transport->data;
417 struct ref *result = NULL;
418 int i;
419
420 if (for_push)
421 return NULL;
422
423 if (data->fd > 0)
424 close(data->fd);
425 data->fd = read_bundle_header(transport->url, &data->header);
426 if (data->fd < 0)
427 die ("Could not read bundle '%s'.", transport->url);
428 for (i = 0; i < data->header.references.nr; i++) {
429 struct ref_list_entry *e = data->header.references.list + i;
430 struct ref *ref = alloc_ref(e->name);
431 hashcpy(ref->old_sha1, e->sha1);
432 ref->next = result;
433 result = ref;
434 }
435 return result;
436 }
437
438 static int fetch_refs_from_bundle(struct transport *transport,
439 int nr_heads, struct ref **to_fetch)
440 {
441 struct bundle_transport_data *data = transport->data;
442 return unbundle(&data->header, data->fd,
443 transport->progress ? BUNDLE_VERBOSE : 0);
444 }
445
446 static int close_bundle(struct transport *transport)
447 {
448 struct bundle_transport_data *data = transport->data;
449 if (data->fd > 0)
450 close(data->fd);
451 free(data);
452 return 0;
453 }
454
455 struct git_transport_data {
456 struct git_transport_options options;
457 struct child_process *conn;
458 int fd[2];
459 unsigned got_remote_heads : 1;
460 struct sha1_array extra_have;
461 struct sha1_array shallow;
462 };
463
464 static int set_git_option(struct git_transport_options *opts,
465 const char *name, const char *value)
466 {
467 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
468 opts->uploadpack = value;
469 return 0;
470 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
471 opts->receivepack = value;
472 return 0;
473 } else if (!strcmp(name, TRANS_OPT_THIN)) {
474 opts->thin = !!value;
475 return 0;
476 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
477 opts->followtags = !!value;
478 return 0;
479 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
480 opts->keep = !!value;
481 return 0;
482 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
483 opts->update_shallow = !!value;
484 return 0;
485 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
486 if (!value)
487 opts->depth = 0;
488 else {
489 char *end;
490 opts->depth = strtol(value, &end, 0);
491 if (*end)
492 die("transport: invalid depth option '%s'", value);
493 }
494 return 0;
495 }
496 return 1;
497 }
498
499 static int connect_setup(struct transport *transport, int for_push, int verbose)
500 {
501 struct git_transport_data *data = transport->data;
502
503 if (data->conn)
504 return 0;
505
506 data->conn = git_connect(data->fd, transport->url,
507 for_push ? data->options.receivepack :
508 data->options.uploadpack,
509 verbose ? CONNECT_VERBOSE : 0);
510
511 return 0;
512 }
513
514 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
515 {
516 struct git_transport_data *data = transport->data;
517 struct ref *refs;
518
519 connect_setup(transport, for_push, 0);
520 get_remote_heads(data->fd[0], NULL, 0, &refs,
521 for_push ? REF_NORMAL : 0,
522 &data->extra_have,
523 &data->shallow);
524 data->got_remote_heads = 1;
525
526 return refs;
527 }
528
529 static int fetch_refs_via_pack(struct transport *transport,
530 int nr_heads, struct ref **to_fetch)
531 {
532 struct git_transport_data *data = transport->data;
533 const struct ref *refs;
534 char *dest = xstrdup(transport->url);
535 struct fetch_pack_args args;
536 struct ref *refs_tmp = NULL;
537
538 memset(&args, 0, sizeof(args));
539 args.uploadpack = data->options.uploadpack;
540 args.keep_pack = data->options.keep;
541 args.lock_pack = 1;
542 args.use_thin_pack = data->options.thin;
543 args.include_tag = data->options.followtags;
544 args.verbose = (transport->verbose > 1);
545 args.quiet = (transport->verbose < 0);
546 args.no_progress = !transport->progress;
547 args.depth = data->options.depth;
548 args.check_self_contained_and_connected =
549 data->options.check_self_contained_and_connected;
550 args.cloning = transport->cloning;
551 args.update_shallow = data->options.update_shallow;
552
553 if (!data->got_remote_heads) {
554 connect_setup(transport, 0, 0);
555 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
556 NULL, &data->shallow);
557 data->got_remote_heads = 1;
558 }
559
560 refs = fetch_pack(&args, data->fd, data->conn,
561 refs_tmp ? refs_tmp : transport->remote_refs,
562 dest, to_fetch, nr_heads, &data->shallow,
563 &transport->pack_lockfile);
564 close(data->fd[0]);
565 close(data->fd[1]);
566 if (finish_connect(data->conn))
567 refs = NULL;
568 data->conn = NULL;
569 data->got_remote_heads = 0;
570 data->options.self_contained_and_connected =
571 args.self_contained_and_connected;
572
573 free_refs(refs_tmp);
574
575 free(dest);
576 return (refs ? 0 : -1);
577 }
578
579 static int push_had_errors(struct ref *ref)
580 {
581 for (; ref; ref = ref->next) {
582 switch (ref->status) {
583 case REF_STATUS_NONE:
584 case REF_STATUS_UPTODATE:
585 case REF_STATUS_OK:
586 break;
587 default:
588 return 1;
589 }
590 }
591 return 0;
592 }
593
594 int transport_refs_pushed(struct ref *ref)
595 {
596 for (; ref; ref = ref->next) {
597 switch(ref->status) {
598 case REF_STATUS_NONE:
599 case REF_STATUS_UPTODATE:
600 break;
601 default:
602 return 1;
603 }
604 }
605 return 0;
606 }
607
608 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
609 {
610 struct refspec rs;
611
612 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
613 return;
614
615 rs.src = ref->name;
616 rs.dst = NULL;
617
618 if (!remote_find_tracking(remote, &rs)) {
619 if (verbose)
620 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
621 if (ref->deletion) {
622 delete_ref(rs.dst, NULL, 0);
623 } else
624 update_ref("update by push", rs.dst,
625 ref->new_sha1, NULL, 0, 0);
626 free(rs.dst);
627 }
628 }
629
630 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
631 {
632 if (porcelain) {
633 if (from)
634 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
635 else
636 fprintf(stdout, "%c\t:%s\t", flag, to->name);
637 if (msg)
638 fprintf(stdout, "%s (%s)\n", summary, msg);
639 else
640 fprintf(stdout, "%s\n", summary);
641 } else {
642 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
643 if (from)
644 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
645 else
646 fputs(prettify_refname(to->name), stderr);
647 if (msg) {
648 fputs(" (", stderr);
649 fputs(msg, stderr);
650 fputc(')', stderr);
651 }
652 fputc('\n', stderr);
653 }
654 }
655
656 static const char *status_abbrev(unsigned char sha1[20])
657 {
658 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
659 }
660
661 static void print_ok_ref_status(struct ref *ref, int porcelain)
662 {
663 if (ref->deletion)
664 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
665 else if (is_null_sha1(ref->old_sha1))
666 print_ref_status('*',
667 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
668 "[new branch]"),
669 ref, ref->peer_ref, NULL, porcelain);
670 else {
671 char quickref[84];
672 char type;
673 const char *msg;
674
675 strcpy(quickref, status_abbrev(ref->old_sha1));
676 if (ref->forced_update) {
677 strcat(quickref, "...");
678 type = '+';
679 msg = "forced update";
680 } else {
681 strcat(quickref, "..");
682 type = ' ';
683 msg = NULL;
684 }
685 strcat(quickref, status_abbrev(ref->new_sha1));
686
687 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
688 }
689 }
690
691 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
692 {
693 if (!count)
694 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
695
696 switch(ref->status) {
697 case REF_STATUS_NONE:
698 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
699 break;
700 case REF_STATUS_REJECT_NODELETE:
701 print_ref_status('!', "[rejected]", ref, NULL,
702 "remote does not support deleting refs", porcelain);
703 break;
704 case REF_STATUS_UPTODATE:
705 print_ref_status('=', "[up to date]", ref,
706 ref->peer_ref, NULL, porcelain);
707 break;
708 case REF_STATUS_REJECT_NONFASTFORWARD:
709 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
710 "non-fast-forward", porcelain);
711 break;
712 case REF_STATUS_REJECT_ALREADY_EXISTS:
713 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
714 "already exists", porcelain);
715 break;
716 case REF_STATUS_REJECT_FETCH_FIRST:
717 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
718 "fetch first", porcelain);
719 break;
720 case REF_STATUS_REJECT_NEEDS_FORCE:
721 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
722 "needs force", porcelain);
723 break;
724 case REF_STATUS_REJECT_STALE:
725 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
726 "stale info", porcelain);
727 break;
728 case REF_STATUS_REJECT_SHALLOW:
729 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
730 "new shallow roots not allowed", porcelain);
731 break;
732 case REF_STATUS_REMOTE_REJECT:
733 print_ref_status('!', "[remote rejected]", ref,
734 ref->deletion ? NULL : ref->peer_ref,
735 ref->remote_status, porcelain);
736 break;
737 case REF_STATUS_EXPECTING_REPORT:
738 print_ref_status('!', "[remote failure]", ref,
739 ref->deletion ? NULL : ref->peer_ref,
740 "remote failed to report status", porcelain);
741 break;
742 case REF_STATUS_OK:
743 print_ok_ref_status(ref, porcelain);
744 break;
745 }
746
747 return 1;
748 }
749
750 void transport_print_push_status(const char *dest, struct ref *refs,
751 int verbose, int porcelain, unsigned int *reject_reasons)
752 {
753 struct ref *ref;
754 int n = 0;
755 unsigned char head_sha1[20];
756 char *head;
757
758 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
759
760 if (verbose) {
761 for (ref = refs; ref; ref = ref->next)
762 if (ref->status == REF_STATUS_UPTODATE)
763 n += print_one_push_status(ref, dest, n, porcelain);
764 }
765
766 for (ref = refs; ref; ref = ref->next)
767 if (ref->status == REF_STATUS_OK)
768 n += print_one_push_status(ref, dest, n, porcelain);
769
770 *reject_reasons = 0;
771 for (ref = refs; ref; ref = ref->next) {
772 if (ref->status != REF_STATUS_NONE &&
773 ref->status != REF_STATUS_UPTODATE &&
774 ref->status != REF_STATUS_OK)
775 n += print_one_push_status(ref, dest, n, porcelain);
776 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
777 if (head != NULL && !strcmp(head, ref->name))
778 *reject_reasons |= REJECT_NON_FF_HEAD;
779 else
780 *reject_reasons |= REJECT_NON_FF_OTHER;
781 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
782 *reject_reasons |= REJECT_ALREADY_EXISTS;
783 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
784 *reject_reasons |= REJECT_FETCH_FIRST;
785 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
786 *reject_reasons |= REJECT_NEEDS_FORCE;
787 }
788 }
789 }
790
791 void transport_verify_remote_names(int nr_heads, const char **heads)
792 {
793 int i;
794
795 for (i = 0; i < nr_heads; i++) {
796 const char *local = heads[i];
797 const char *remote = strrchr(heads[i], ':');
798
799 if (*local == '+')
800 local++;
801
802 /* A matching refspec is okay. */
803 if (remote == local && remote[1] == '\0')
804 continue;
805
806 remote = remote ? (remote + 1) : local;
807 if (check_refname_format(remote,
808 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
809 die("remote part of refspec is not a valid name in %s",
810 heads[i]);
811 }
812 }
813
814 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
815 {
816 struct git_transport_data *data = transport->data;
817 struct send_pack_args args;
818 int ret;
819
820 if (!data->got_remote_heads) {
821 struct ref *tmp_refs;
822 connect_setup(transport, 1, 0);
823
824 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
825 NULL, &data->shallow);
826 data->got_remote_heads = 1;
827 }
828
829 memset(&args, 0, sizeof(args));
830 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
831 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
832 args.use_thin_pack = data->options.thin;
833 args.verbose = (transport->verbose > 0);
834 args.quiet = (transport->verbose < 0);
835 args.progress = transport->progress;
836 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
837 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
838
839 ret = send_pack(&args, data->fd, data->conn, remote_refs,
840 &data->extra_have);
841
842 close(data->fd[1]);
843 close(data->fd[0]);
844 ret |= finish_connect(data->conn);
845 data->conn = NULL;
846 data->got_remote_heads = 0;
847
848 return ret;
849 }
850
851 static int connect_git(struct transport *transport, const char *name,
852 const char *executable, int fd[2])
853 {
854 struct git_transport_data *data = transport->data;
855 data->conn = git_connect(data->fd, transport->url,
856 executable, 0);
857 fd[0] = data->fd[0];
858 fd[1] = data->fd[1];
859 return 0;
860 }
861
862 static int disconnect_git(struct transport *transport)
863 {
864 struct git_transport_data *data = transport->data;
865 if (data->conn) {
866 if (data->got_remote_heads)
867 packet_flush(data->fd[1]);
868 close(data->fd[0]);
869 close(data->fd[1]);
870 finish_connect(data->conn);
871 }
872
873 free(data);
874 return 0;
875 }
876
877 void transport_take_over(struct transport *transport,
878 struct child_process *child)
879 {
880 struct git_transport_data *data;
881
882 if (!transport->smart_options)
883 die("Bug detected: Taking over transport requires non-NULL "
884 "smart_options field.");
885
886 data = xcalloc(1, sizeof(*data));
887 data->options = *transport->smart_options;
888 data->conn = child;
889 data->fd[0] = data->conn->out;
890 data->fd[1] = data->conn->in;
891 data->got_remote_heads = 0;
892 transport->data = data;
893
894 transport->set_option = NULL;
895 transport->get_refs_list = get_refs_via_connect;
896 transport->fetch = fetch_refs_via_pack;
897 transport->push = NULL;
898 transport->push_refs = git_transport_push;
899 transport->disconnect = disconnect_git;
900 transport->smart_options = &(data->options);
901
902 transport->cannot_reuse = 1;
903 }
904
905 static int is_file(const char *url)
906 {
907 struct stat buf;
908 if (stat(url, &buf))
909 return 0;
910 return S_ISREG(buf.st_mode);
911 }
912
913 static int external_specification_len(const char *url)
914 {
915 return strchr(url, ':') - url;
916 }
917
918 struct transport *transport_get(struct remote *remote, const char *url)
919 {
920 const char *helper;
921 struct transport *ret = xcalloc(1, sizeof(*ret));
922
923 ret->progress = isatty(2);
924
925 if (!remote)
926 die("No remote provided to transport_get()");
927
928 ret->got_remote_refs = 0;
929 ret->remote = remote;
930 helper = remote->foreign_vcs;
931
932 if (!url && remote->url)
933 url = remote->url[0];
934 ret->url = url;
935
936 /* maybe it is a foreign URL? */
937 if (url) {
938 const char *p = url;
939
940 while (is_urlschemechar(p == url, *p))
941 p++;
942 if (starts_with(p, "::"))
943 helper = xstrndup(url, p - url);
944 }
945
946 if (helper) {
947 transport_helper_init(ret, helper);
948 } else if (starts_with(url, "rsync:")) {
949 ret->get_refs_list = get_refs_via_rsync;
950 ret->fetch = fetch_objs_via_rsync;
951 ret->push = rsync_transport_push;
952 ret->smart_options = NULL;
953 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
954 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
955 ret->data = data;
956 ret->get_refs_list = get_refs_from_bundle;
957 ret->fetch = fetch_refs_from_bundle;
958 ret->disconnect = close_bundle;
959 ret->smart_options = NULL;
960 } else if (!is_url(url)
961 || starts_with(url, "file://")
962 || starts_with(url, "git://")
963 || starts_with(url, "ssh://")
964 || starts_with(url, "git+ssh://")
965 || starts_with(url, "ssh+git://")) {
966 /* These are builtin smart transports. */
967 struct git_transport_data *data = xcalloc(1, sizeof(*data));
968 ret->data = data;
969 ret->set_option = NULL;
970 ret->get_refs_list = get_refs_via_connect;
971 ret->fetch = fetch_refs_via_pack;
972 ret->push_refs = git_transport_push;
973 ret->connect = connect_git;
974 ret->disconnect = disconnect_git;
975 ret->smart_options = &(data->options);
976
977 data->conn = NULL;
978 data->got_remote_heads = 0;
979 } else {
980 /* Unknown protocol in URL. Pass to external handler. */
981 int len = external_specification_len(url);
982 char *handler = xmalloc(len + 1);
983 handler[len] = 0;
984 strncpy(handler, url, len);
985 transport_helper_init(ret, handler);
986 }
987
988 if (ret->smart_options) {
989 ret->smart_options->thin = 1;
990 ret->smart_options->uploadpack = "git-upload-pack";
991 if (remote->uploadpack)
992 ret->smart_options->uploadpack = remote->uploadpack;
993 ret->smart_options->receivepack = "git-receive-pack";
994 if (remote->receivepack)
995 ret->smart_options->receivepack = remote->receivepack;
996 }
997
998 return ret;
999 }
1000
1001 int transport_set_option(struct transport *transport,
1002 const char *name, const char *value)
1003 {
1004 int git_reports = 1, protocol_reports = 1;
1005
1006 if (transport->smart_options)
1007 git_reports = set_git_option(transport->smart_options,
1008 name, value);
1009
1010 if (transport->set_option)
1011 protocol_reports = transport->set_option(transport, name,
1012 value);
1013
1014 /* If either report is 0, report 0 (success). */
1015 if (!git_reports || !protocol_reports)
1016 return 0;
1017 /* If either reports -1 (invalid value), report -1. */
1018 if ((git_reports == -1) || (protocol_reports == -1))
1019 return -1;
1020 /* Otherwise if both report unknown, report unknown. */
1021 return 1;
1022 }
1023
1024 void transport_set_verbosity(struct transport *transport, int verbosity,
1025 int force_progress)
1026 {
1027 if (verbosity >= 1)
1028 transport->verbose = verbosity <= 3 ? verbosity : 3;
1029 if (verbosity < 0)
1030 transport->verbose = -1;
1031
1032 /**
1033 * Rules used to determine whether to report progress (processing aborts
1034 * when a rule is satisfied):
1035 *
1036 * . Report progress, if force_progress is 1 (ie. --progress).
1037 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1038 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1039 * . Report progress if isatty(2) is 1.
1040 **/
1041 if (force_progress >= 0)
1042 transport->progress = !!force_progress;
1043 else
1044 transport->progress = verbosity >= 0 && isatty(2);
1045 }
1046
1047 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1048 {
1049 int i;
1050
1051 fprintf(stderr, "The following submodule paths contain changes that can\n"
1052 "not be found on any remote:\n");
1053 for (i = 0; i < needs_pushing->nr; i++)
1054 printf(" %s\n", needs_pushing->items[i].string);
1055 fprintf(stderr, "\nPlease try\n\n"
1056 " git push --recurse-submodules=on-demand\n\n"
1057 "or cd to the path and use\n\n"
1058 " git push\n\n"
1059 "to push them to a remote.\n\n");
1060
1061 string_list_clear(needs_pushing, 0);
1062
1063 die("Aborting.");
1064 }
1065
1066 static int run_pre_push_hook(struct transport *transport,
1067 struct ref *remote_refs)
1068 {
1069 int ret = 0, x;
1070 struct ref *r;
1071 struct child_process proc;
1072 struct strbuf buf;
1073 const char *argv[4];
1074
1075 if (!(argv[0] = find_hook("pre-push")))
1076 return 0;
1077
1078 argv[1] = transport->remote->name;
1079 argv[2] = transport->url;
1080 argv[3] = NULL;
1081
1082 memset(&proc, 0, sizeof(proc));
1083 proc.argv = argv;
1084 proc.in = -1;
1085
1086 if (start_command(&proc)) {
1087 finish_command(&proc);
1088 return -1;
1089 }
1090
1091 strbuf_init(&buf, 256);
1092
1093 for (r = remote_refs; r; r = r->next) {
1094 if (!r->peer_ref) continue;
1095 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1096 if (r->status == REF_STATUS_REJECT_STALE) continue;
1097 if (r->status == REF_STATUS_UPTODATE) continue;
1098
1099 strbuf_reset(&buf);
1100 strbuf_addf( &buf, "%s %s %s %s\n",
1101 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1102 r->name, sha1_to_hex(r->old_sha1));
1103
1104 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1105 ret = -1;
1106 break;
1107 }
1108 }
1109
1110 strbuf_release(&buf);
1111
1112 x = close(proc.in);
1113 if (!ret)
1114 ret = x;
1115
1116 x = finish_command(&proc);
1117 if (!ret)
1118 ret = x;
1119
1120 return ret;
1121 }
1122
1123 int transport_push(struct transport *transport,
1124 int refspec_nr, const char **refspec, int flags,
1125 unsigned int *reject_reasons)
1126 {
1127 *reject_reasons = 0;
1128 transport_verify_remote_names(refspec_nr, refspec);
1129
1130 if (transport->push) {
1131 /* Maybe FIXME. But no important transport uses this case. */
1132 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1133 die("This transport does not support using --set-upstream");
1134
1135 return transport->push(transport, refspec_nr, refspec, flags);
1136 } else if (transport->push_refs) {
1137 struct ref *remote_refs;
1138 struct ref *local_refs = get_local_heads();
1139 int match_flags = MATCH_REFS_NONE;
1140 int verbose = (transport->verbose > 0);
1141 int quiet = (transport->verbose < 0);
1142 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1143 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1144 int push_ret, ret, err;
1145
1146 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1147 return -1;
1148
1149 remote_refs = transport->get_refs_list(transport, 1);
1150
1151 if (flags & TRANSPORT_PUSH_ALL)
1152 match_flags |= MATCH_REFS_ALL;
1153 if (flags & TRANSPORT_PUSH_MIRROR)
1154 match_flags |= MATCH_REFS_MIRROR;
1155 if (flags & TRANSPORT_PUSH_PRUNE)
1156 match_flags |= MATCH_REFS_PRUNE;
1157 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1158 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1159
1160 if (match_push_refs(local_refs, &remote_refs,
1161 refspec_nr, refspec, match_flags)) {
1162 return -1;
1163 }
1164
1165 if (transport->smart_options &&
1166 transport->smart_options->cas &&
1167 !is_empty_cas(transport->smart_options->cas))
1168 apply_push_cas(transport->smart_options->cas,
1169 transport->remote, remote_refs);
1170
1171 set_ref_status_for_push(remote_refs,
1172 flags & TRANSPORT_PUSH_MIRROR,
1173 flags & TRANSPORT_PUSH_FORCE);
1174
1175 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1176 if (run_pre_push_hook(transport, remote_refs))
1177 return -1;
1178
1179 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1180 struct ref *ref = remote_refs;
1181 for (; ref; ref = ref->next)
1182 if (!is_null_sha1(ref->new_sha1) &&
1183 !push_unpushed_submodules(ref->new_sha1,
1184 transport->remote->name))
1185 die ("Failed to push all needed submodules!");
1186 }
1187
1188 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1189 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1190 struct ref *ref = remote_refs;
1191 struct string_list needs_pushing;
1192
1193 memset(&needs_pushing, 0, sizeof(struct string_list));
1194 needs_pushing.strdup_strings = 1;
1195 for (; ref; ref = ref->next)
1196 if (!is_null_sha1(ref->new_sha1) &&
1197 find_unpushed_submodules(ref->new_sha1,
1198 transport->remote->name, &needs_pushing))
1199 die_with_unpushed_submodules(&needs_pushing);
1200 }
1201
1202 push_ret = transport->push_refs(transport, remote_refs, flags);
1203 err = push_had_errors(remote_refs);
1204 ret = push_ret | err;
1205
1206 if (!quiet || err)
1207 transport_print_push_status(transport->url, remote_refs,
1208 verbose | porcelain, porcelain,
1209 reject_reasons);
1210
1211 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1212 set_upstreams(transport, remote_refs, pretend);
1213
1214 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1215 struct ref *ref;
1216 for (ref = remote_refs; ref; ref = ref->next)
1217 transport_update_tracking_ref(transport->remote, ref, verbose);
1218 }
1219
1220 if (porcelain && !push_ret)
1221 puts("Done");
1222 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1223 fprintf(stderr, "Everything up-to-date\n");
1224
1225 return ret;
1226 }
1227 return 1;
1228 }
1229
1230 const struct ref *transport_get_remote_refs(struct transport *transport)
1231 {
1232 if (!transport->got_remote_refs) {
1233 transport->remote_refs = transport->get_refs_list(transport, 0);
1234 transport->got_remote_refs = 1;
1235 }
1236
1237 return transport->remote_refs;
1238 }
1239
1240 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1241 {
1242 int rc;
1243 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1244 struct ref **heads = NULL;
1245 struct ref *rm;
1246
1247 for (rm = refs; rm; rm = rm->next) {
1248 nr_refs++;
1249 if (rm->peer_ref &&
1250 !is_null_sha1(rm->old_sha1) &&
1251 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1252 continue;
1253 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1254 heads[nr_heads++] = rm;
1255 }
1256
1257 if (!nr_heads) {
1258 /*
1259 * When deepening of a shallow repository is requested,
1260 * then local and remote refs are likely to still be equal.
1261 * Just feed them all to the fetch method in that case.
1262 * This condition shouldn't be met in a non-deepening fetch
1263 * (see builtin/fetch.c:quickfetch()).
1264 */
1265 heads = xmalloc(nr_refs * sizeof(*heads));
1266 for (rm = refs; rm; rm = rm->next)
1267 heads[nr_heads++] = rm;
1268 }
1269
1270 rc = transport->fetch(transport, nr_heads, heads);
1271
1272 free(heads);
1273 return rc;
1274 }
1275
1276 void transport_unlock_pack(struct transport *transport)
1277 {
1278 if (transport->pack_lockfile) {
1279 unlink_or_warn(transport->pack_lockfile);
1280 free(transport->pack_lockfile);
1281 transport->pack_lockfile = NULL;
1282 }
1283 }
1284
1285 int transport_connect(struct transport *transport, const char *name,
1286 const char *exec, int fd[2])
1287 {
1288 if (transport->connect)
1289 return transport->connect(transport, name, exec, fd);
1290 else
1291 die("Operation not supported by protocol");
1292 }
1293
1294 int transport_disconnect(struct transport *transport)
1295 {
1296 int ret = 0;
1297 if (transport->disconnect)
1298 ret = transport->disconnect(transport);
1299 free(transport);
1300 return ret;
1301 }
1302
1303 /*
1304 * Strip username (and password) from a URL and return
1305 * it in a newly allocated string.
1306 */
1307 char *transport_anonymize_url(const char *url)
1308 {
1309 char *anon_url, *scheme_prefix, *anon_part;
1310 size_t anon_len, prefix_len = 0;
1311
1312 anon_part = strchr(url, '@');
1313 if (url_is_local_not_ssh(url) || !anon_part)
1314 goto literal_copy;
1315
1316 anon_len = strlen(++anon_part);
1317 scheme_prefix = strstr(url, "://");
1318 if (!scheme_prefix) {
1319 if (!strchr(anon_part, ':'))
1320 /* cannot be "me@there:/path/name" */
1321 goto literal_copy;
1322 } else {
1323 const char *cp;
1324 /* make sure scheme is reasonable */
1325 for (cp = url; cp < scheme_prefix; cp++) {
1326 switch (*cp) {
1327 /* RFC 1738 2.1 */
1328 case '+': case '.': case '-':
1329 break; /* ok */
1330 default:
1331 if (isalnum(*cp))
1332 break;
1333 /* it isn't */
1334 goto literal_copy;
1335 }
1336 }
1337 /* @ past the first slash does not count */
1338 cp = strchr(scheme_prefix + 3, '/');
1339 if (cp && cp < anon_part)
1340 goto literal_copy;
1341 prefix_len = scheme_prefix - url + 3;
1342 }
1343 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1344 memcpy(anon_url, url, prefix_len);
1345 memcpy(anon_url + prefix_len, anon_part, anon_len);
1346 return anon_url;
1347 literal_copy:
1348 return xstrdup(url);
1349 }
1350
1351 struct alternate_refs_data {
1352 alternate_ref_fn *fn;
1353 void *data;
1354 };
1355
1356 static int refs_from_alternate_cb(struct alternate_object_database *e,
1357 void *data)
1358 {
1359 char *other;
1360 size_t len;
1361 struct remote *remote;
1362 struct transport *transport;
1363 const struct ref *extra;
1364 struct alternate_refs_data *cb = data;
1365
1366 e->name[-1] = '\0';
1367 other = xstrdup(real_path(e->base));
1368 e->name[-1] = '/';
1369 len = strlen(other);
1370
1371 while (other[len-1] == '/')
1372 other[--len] = '\0';
1373 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1374 return 0;
1375 /* Is this a git repository with refs? */
1376 memcpy(other + len - 8, "/refs", 6);
1377 if (!is_directory(other))
1378 return 0;
1379 other[len - 8] = '\0';
1380 remote = remote_get(other);
1381 transport = transport_get(remote, other);
1382 for (extra = transport_get_remote_refs(transport);
1383 extra;
1384 extra = extra->next)
1385 cb->fn(extra, cb->data);
1386 transport_disconnect(transport);
1387 free(other);
1388 return 0;
1389 }
1390
1391 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1392 {
1393 struct alternate_refs_data cb;
1394 cb.fn = fn;
1395 cb.data = data;
1396 foreach_alt_odb(refs_from_alternate_cb, &cb);
1397 }
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