?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge branch 'jc/config-mak-document-darwin-vs-macosx' into jch
[git/jrn.git] / transport.c
blob6fb9346792385e1bc13d1e3a416a3803adc01436
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,
172 RESOLVE_REF_READING, &flag);
173 if (tmp && flag & REF_ISSYMREF &&
174 starts_with(tmp, "refs/heads/"))
175 localname = tmp;
176
177 /* Both source and destination must be local branches. */
178 if (!localname || !starts_with(localname, "refs/heads/"))
179 continue;
180 if (!remotename || !starts_with(remotename, "refs/heads/"))
181 continue;
182
183 if (!pretend)
184 install_branch_config(BRANCH_CONFIG_VERBOSE,
185 localname + 11, transport->remote->name,
186 remotename);
187 else
188 printf("Would set upstream of '%s' to '%s' of '%s'\n",
189 localname + 11, remotename + 11,
190 transport->remote->name);
191 }
192 }
193
194 static const char *rsync_url(const char *url)
195 {
196 if (!starts_with(url, "rsync://"))
197 skip_prefix(url, "rsync:", &url);
198 return url;
199 }
200
201 static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
202 {
203 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
204 struct ref dummy = {NULL}, *tail = &dummy;
205 struct child_process rsync;
206 const char *args[5];
207 int temp_dir_len;
208
209 if (for_push)
210 return NULL;
211
212 /* copy the refs to the temporary directory */
213
214 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
215 if (!mkdtemp(temp_dir.buf))
216 die_errno ("Could not make temporary directory");
217 temp_dir_len = temp_dir.len;
218
219 strbuf_addstr(&buf, rsync_url(transport->url));
220 strbuf_addstr(&buf, "/refs");
221
222 memset(&rsync, 0, sizeof(rsync));
223 rsync.argv = args;
224 rsync.stdout_to_stderr = 1;
225 args[0] = "rsync";
226 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
227 args[2] = buf.buf;
228 args[3] = temp_dir.buf;
229 args[4] = NULL;
230
231 if (run_command(&rsync))
232 die ("Could not run rsync to get refs");
233
234 strbuf_reset(&buf);
235 strbuf_addstr(&buf, rsync_url(transport->url));
236 strbuf_addstr(&buf, "/packed-refs");
237
238 args[2] = buf.buf;
239
240 if (run_command(&rsync))
241 die ("Could not run rsync to get refs");
242
243 /* read the copied refs */
244
245 strbuf_addstr(&temp_dir, "/refs");
246 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
247 strbuf_setlen(&temp_dir, temp_dir_len);
248
249 tail = &dummy;
250 strbuf_addstr(&temp_dir, "/packed-refs");
251 insert_packed_refs(temp_dir.buf, &tail);
252 strbuf_setlen(&temp_dir, temp_dir_len);
253
254 if (remove_dir_recursively(&temp_dir, 0))
255 warning ("Error removing temporary directory %s.",
256 temp_dir.buf);
257
258 strbuf_release(&buf);
259 strbuf_release(&temp_dir);
260
261 return dummy.next;
262 }
263
264 static int fetch_objs_via_rsync(struct transport *transport,
265 int nr_objs, struct ref **to_fetch)
266 {
267 struct child_process rsync;
268
269 memset(&rsync, 0, sizeof(rsync));
270 rsync.stdout_to_stderr = 1;
271 argv_array_push(&rsync.args, "rsync");
272 argv_array_push(&rsync.args, (transport->verbose > 1) ? "-rv" : "-r");
273 argv_array_push(&rsync.args, "--ignore-existing");
274 argv_array_push(&rsync.args, "--exclude");
275 argv_array_push(&rsync.args, "info");
276 argv_array_pushf(&rsync.args, "%s/objects/", rsync_url(transport->url));
277 argv_array_push(&rsync.args, get_object_directory());
278
279 /* NEEDSWORK: handle one level of alternates */
280 return run_command(&rsync);
281 }
282
283 static int write_one_ref(const char *name, const unsigned char *sha1,
284 int flags, void *data)
285 {
286 struct strbuf *buf = data;
287 int len = buf->len;
288
289 /* when called via for_each_ref(), flags is non-zero */
290 if (flags && !starts_with(name, "refs/heads/") &&
291 !starts_with(name, "refs/tags/"))
292 return 0;
293
294 strbuf_addstr(buf, name);
295 if (safe_create_leading_directories(buf->buf) ||
296 write_file(buf->buf, 0, "%s\n", sha1_to_hex(sha1)))
297 return error("problems writing temporary file %s: %s",
298 buf->buf, strerror(errno));
299 strbuf_setlen(buf, len);
300 return 0;
301 }
302
303 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
304 int refspec_nr, const char **refspec)
305 {
306 int i;
307
308 for (i = 0; i < refspec_nr; i++) {
309 unsigned char sha1[20];
310 char *ref;
311
312 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
313 return error("Could not get ref %s", refspec[i]);
314
315 if (write_one_ref(ref, sha1, 0, temp_dir)) {
316 free(ref);
317 return -1;
318 }
319 free(ref);
320 }
321 return 0;
322 }
323
324 static int rsync_transport_push(struct transport *transport,
325 int refspec_nr, const char **refspec, int flags)
326 {
327 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
328 int result = 0, i;
329 struct child_process rsync;
330 const char *args[10];
331
332 if (flags & TRANSPORT_PUSH_MIRROR)
333 return error("rsync transport does not support mirror mode");
334
335 /* first push the objects */
336
337 strbuf_addstr(&buf, rsync_url(transport->url));
338 strbuf_addch(&buf, '/');
339
340 memset(&rsync, 0, sizeof(rsync));
341 rsync.argv = args;
342 rsync.stdout_to_stderr = 1;
343 i = 0;
344 args[i++] = "rsync";
345 args[i++] = "-a";
346 if (flags & TRANSPORT_PUSH_DRY_RUN)
347 args[i++] = "--dry-run";
348 if (transport->verbose > 1)
349 args[i++] = "-v";
350 args[i++] = "--ignore-existing";
351 args[i++] = "--exclude";
352 args[i++] = "info";
353 args[i++] = get_object_directory();
354 args[i++] = buf.buf;
355 args[i++] = NULL;
356
357 if (run_command(&rsync))
358 return error("Could not push objects to %s",
359 rsync_url(transport->url));
360
361 /* copy the refs to the temporary directory; they could be packed. */
362
363 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
364 if (!mkdtemp(temp_dir.buf))
365 die_errno ("Could not make temporary directory");
366 strbuf_addch(&temp_dir, '/');
367
368 if (flags & TRANSPORT_PUSH_ALL) {
369 if (for_each_ref(write_one_ref, &temp_dir))
370 return -1;
371 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
372 return -1;
373
374 i = 2;
375 if (flags & TRANSPORT_PUSH_DRY_RUN)
376 args[i++] = "--dry-run";
377 if (!(flags & TRANSPORT_PUSH_FORCE))
378 args[i++] = "--ignore-existing";
379 args[i++] = temp_dir.buf;
380 args[i++] = rsync_url(transport->url);
381 args[i++] = NULL;
382 if (run_command(&rsync))
383 result = error("Could not push to %s",
384 rsync_url(transport->url));
385
386 if (remove_dir_recursively(&temp_dir, 0))
387 warning ("Could not remove temporary directory %s.",
388 temp_dir.buf);
389
390 strbuf_release(&buf);
391 strbuf_release(&temp_dir);
392
393 return result;
394 }
395
396 struct bundle_transport_data {
397 int fd;
398 struct bundle_header header;
399 };
400
401 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
402 {
403 struct bundle_transport_data *data = transport->data;
404 struct ref *result = NULL;
405 int i;
406
407 if (for_push)
408 return NULL;
409
410 if (data->fd > 0)
411 close(data->fd);
412 data->fd = read_bundle_header(transport->url, &data->header);
413 if (data->fd < 0)
414 die ("Could not read bundle '%s'.", transport->url);
415 for (i = 0; i < data->header.references.nr; i++) {
416 struct ref_list_entry *e = data->header.references.list + i;
417 struct ref *ref = alloc_ref(e->name);
418 hashcpy(ref->old_sha1, e->sha1);
419 ref->next = result;
420 result = ref;
421 }
422 return result;
423 }
424
425 static int fetch_refs_from_bundle(struct transport *transport,
426 int nr_heads, struct ref **to_fetch)
427 {
428 struct bundle_transport_data *data = transport->data;
429 return unbundle(&data->header, data->fd,
430 transport->progress ? BUNDLE_VERBOSE : 0);
431 }
432
433 static int close_bundle(struct transport *transport)
434 {
435 struct bundle_transport_data *data = transport->data;
436 if (data->fd > 0)
437 close(data->fd);
438 free(data);
439 return 0;
440 }
441
442 struct git_transport_data {
443 struct git_transport_options options;
444 struct child_process *conn;
445 int fd[2];
446 unsigned got_remote_heads : 1;
447 struct sha1_array extra_have;
448 struct sha1_array shallow;
449 };
450
451 static int set_git_option(struct git_transport_options *opts,
452 const char *name, const char *value)
453 {
454 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
455 opts->uploadpack = value;
456 return 0;
457 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
458 opts->receivepack = value;
459 return 0;
460 } else if (!strcmp(name, TRANS_OPT_THIN)) {
461 opts->thin = !!value;
462 return 0;
463 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
464 opts->followtags = !!value;
465 return 0;
466 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
467 opts->keep = !!value;
468 return 0;
469 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
470 opts->update_shallow = !!value;
471 return 0;
472 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
473 if (!value)
474 opts->depth = 0;
475 else {
476 char *end;
477 opts->depth = strtol(value, &end, 0);
478 if (*end)
479 die("transport: invalid depth option '%s'", value);
480 }
481 return 0;
482 }
483 return 1;
484 }
485
486 static int connect_setup(struct transport *transport, int for_push, int verbose)
487 {
488 struct git_transport_data *data = transport->data;
489
490 if (data->conn)
491 return 0;
492
493 data->conn = git_connect(data->fd, transport->url,
494 for_push ? data->options.receivepack :
495 data->options.uploadpack,
496 verbose ? CONNECT_VERBOSE : 0);
497
498 return 0;
499 }
500
501 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
502 {
503 struct git_transport_data *data = transport->data;
504 struct ref *refs;
505
506 connect_setup(transport, for_push, 0);
507 get_remote_heads(data->fd[0], NULL, 0, &refs,
508 for_push ? REF_NORMAL : 0,
509 &data->extra_have,
510 &data->shallow);
511 data->got_remote_heads = 1;
512
513 return refs;
514 }
515
516 static int fetch_refs_via_pack(struct transport *transport,
517 int nr_heads, struct ref **to_fetch)
518 {
519 struct git_transport_data *data = transport->data;
520 const struct ref *refs;
521 char *dest = xstrdup(transport->url);
522 struct fetch_pack_args args;
523 struct ref *refs_tmp = NULL;
524
525 memset(&args, 0, sizeof(args));
526 args.uploadpack = data->options.uploadpack;
527 args.keep_pack = data->options.keep;
528 args.lock_pack = 1;
529 args.use_thin_pack = data->options.thin;
530 args.include_tag = data->options.followtags;
531 args.verbose = (transport->verbose > 1);
532 args.quiet = (transport->verbose < 0);
533 args.no_progress = !transport->progress;
534 args.depth = data->options.depth;
535 args.check_self_contained_and_connected =
536 data->options.check_self_contained_and_connected;
537 args.cloning = transport->cloning;
538 args.update_shallow = data->options.update_shallow;
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,
543 NULL, &data->shallow);
544 data->got_remote_heads = 1;
545 }
546
547 refs = fetch_pack(&args, data->fd, data->conn,
548 refs_tmp ? refs_tmp : transport->remote_refs,
549 dest, to_fetch, nr_heads, &data->shallow,
550 &transport->pack_lockfile);
551 close(data->fd[0]);
552 close(data->fd[1]);
553 if (finish_connect(data->conn))
554 refs = NULL;
555 data->conn = NULL;
556 data->got_remote_heads = 0;
557 data->options.self_contained_and_connected =
558 args.self_contained_and_connected;
559
560 free_refs(refs_tmp);
561
562 free(dest);
563 return (refs ? 0 : -1);
564 }
565
566 static int push_had_errors(struct ref *ref)
567 {
568 for (; ref; ref = ref->next) {
569 switch (ref->status) {
570 case REF_STATUS_NONE:
571 case REF_STATUS_UPTODATE:
572 case REF_STATUS_OK:
573 break;
574 default:
575 return 1;
576 }
577 }
578 return 0;
579 }
580
581 int transport_refs_pushed(struct ref *ref)
582 {
583 for (; ref; ref = ref->next) {
584 switch(ref->status) {
585 case REF_STATUS_NONE:
586 case REF_STATUS_UPTODATE:
587 break;
588 default:
589 return 1;
590 }
591 }
592 return 0;
593 }
594
595 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
596 {
597 struct refspec rs;
598
599 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
600 return;
601
602 rs.src = ref->name;
603 rs.dst = NULL;
604
605 if (!remote_find_tracking(remote, &rs)) {
606 if (verbose)
607 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
608 if (ref->deletion) {
609 delete_ref(rs.dst, NULL, 0);
610 } else
611 update_ref("update by push", rs.dst,
612 ref->new_sha1, NULL, 0, 0);
613 free(rs.dst);
614 }
615 }
616
617 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
618 {
619 if (porcelain) {
620 if (from)
621 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
622 else
623 fprintf(stdout, "%c\t:%s\t", flag, to->name);
624 if (msg)
625 fprintf(stdout, "%s (%s)\n", summary, msg);
626 else
627 fprintf(stdout, "%s\n", summary);
628 } else {
629 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
630 if (from)
631 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
632 else
633 fputs(prettify_refname(to->name), stderr);
634 if (msg) {
635 fputs(" (", stderr);
636 fputs(msg, stderr);
637 fputc(')', stderr);
638 }
639 fputc('\n', stderr);
640 }
641 }
642
643 static const char *status_abbrev(unsigned char sha1[20])
644 {
645 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
646 }
647
648 static void print_ok_ref_status(struct ref *ref, int porcelain)
649 {
650 if (ref->deletion)
651 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
652 else if (is_null_sha1(ref->old_sha1))
653 print_ref_status('*',
654 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
655 "[new branch]"),
656 ref, ref->peer_ref, NULL, porcelain);
657 else {
658 char quickref[84];
659 char type;
660 const char *msg;
661
662 strcpy(quickref, status_abbrev(ref->old_sha1));
663 if (ref->forced_update) {
664 strcat(quickref, "...");
665 type = '+';
666 msg = "forced update";
667 } else {
668 strcat(quickref, "..");
669 type = ' ';
670 msg = NULL;
671 }
672 strcat(quickref, status_abbrev(ref->new_sha1));
673
674 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
675 }
676 }
677
678 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
679 {
680 if (!count)
681 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
682
683 switch(ref->status) {
684 case REF_STATUS_NONE:
685 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
686 break;
687 case REF_STATUS_REJECT_NODELETE:
688 print_ref_status('!', "[rejected]", ref, NULL,
689 "remote does not support deleting refs", porcelain);
690 break;
691 case REF_STATUS_UPTODATE:
692 print_ref_status('=', "[up to date]", ref,
693 ref->peer_ref, NULL, porcelain);
694 break;
695 case REF_STATUS_REJECT_NONFASTFORWARD:
696 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
697 "non-fast-forward", porcelain);
698 break;
699 case REF_STATUS_REJECT_ALREADY_EXISTS:
700 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
701 "already exists", porcelain);
702 break;
703 case REF_STATUS_REJECT_FETCH_FIRST:
704 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
705 "fetch first", porcelain);
706 break;
707 case REF_STATUS_REJECT_NEEDS_FORCE:
708 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
709 "needs force", porcelain);
710 break;
711 case REF_STATUS_REJECT_STALE:
712 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
713 "stale info", porcelain);
714 break;
715 case REF_STATUS_REJECT_SHALLOW:
716 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
717 "new shallow roots not allowed", porcelain);
718 break;
719 case REF_STATUS_REMOTE_REJECT:
720 print_ref_status('!', "[remote rejected]", ref,
721 ref->deletion ? NULL : ref->peer_ref,
722 ref->remote_status, porcelain);
723 break;
724 case REF_STATUS_EXPECTING_REPORT:
725 print_ref_status('!', "[remote failure]", ref,
726 ref->deletion ? NULL : ref->peer_ref,
727 "remote failed to report status", porcelain);
728 break;
729 case REF_STATUS_OK:
730 print_ok_ref_status(ref, porcelain);
731 break;
732 }
733
734 return 1;
735 }
736
737 void transport_print_push_status(const char *dest, struct ref *refs,
738 int verbose, int porcelain, unsigned int *reject_reasons)
739 {
740 struct ref *ref;
741 int n = 0;
742 unsigned char head_sha1[20];
743 char *head;
744
745 head = resolve_refdup("HEAD", head_sha1, RESOLVE_REF_READING, NULL);
746
747 if (verbose) {
748 for (ref = refs; ref; ref = ref->next)
749 if (ref->status == REF_STATUS_UPTODATE)
750 n += print_one_push_status(ref, dest, n, porcelain);
751 }
752
753 for (ref = refs; ref; ref = ref->next)
754 if (ref->status == REF_STATUS_OK)
755 n += print_one_push_status(ref, dest, n, porcelain);
756
757 *reject_reasons = 0;
758 for (ref = refs; ref; ref = ref->next) {
759 if (ref->status != REF_STATUS_NONE &&
760 ref->status != REF_STATUS_UPTODATE &&
761 ref->status != REF_STATUS_OK)
762 n += print_one_push_status(ref, dest, n, porcelain);
763 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
764 if (head != NULL && !strcmp(head, ref->name))
765 *reject_reasons |= REJECT_NON_FF_HEAD;
766 else
767 *reject_reasons |= REJECT_NON_FF_OTHER;
768 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
769 *reject_reasons |= REJECT_ALREADY_EXISTS;
770 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
771 *reject_reasons |= REJECT_FETCH_FIRST;
772 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
773 *reject_reasons |= REJECT_NEEDS_FORCE;
774 }
775 }
776 }
777
778 void transport_verify_remote_names(int nr_heads, const char **heads)
779 {
780 int i;
781
782 for (i = 0; i < nr_heads; i++) {
783 const char *local = heads[i];
784 const char *remote = strrchr(heads[i], ':');
785
786 if (*local == '+')
787 local++;
788
789 /* A matching refspec is okay. */
790 if (remote == local && remote[1] == '\0')
791 continue;
792
793 remote = remote ? (remote + 1) : local;
794 if (check_refname_format(remote,
795 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
796 die("remote part of refspec is not a valid name in %s",
797 heads[i]);
798 }
799 }
800
801 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
802 {
803 struct git_transport_data *data = transport->data;
804 struct send_pack_args args;
805 int ret;
806
807 if (!data->got_remote_heads) {
808 struct ref *tmp_refs;
809 connect_setup(transport, 1, 0);
810
811 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
812 NULL, &data->shallow);
813 data->got_remote_heads = 1;
814 }
815
816 memset(&args, 0, sizeof(args));
817 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
818 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
819 args.use_thin_pack = data->options.thin;
820 args.verbose = (transport->verbose > 0);
821 args.quiet = (transport->verbose < 0);
822 args.progress = transport->progress;
823 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
824 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
825
826 ret = send_pack(&args, data->fd, data->conn, remote_refs,
827 &data->extra_have);
828
829 close(data->fd[1]);
830 close(data->fd[0]);
831 ret |= finish_connect(data->conn);
832 data->conn = NULL;
833 data->got_remote_heads = 0;
834
835 return ret;
836 }
837
838 static int connect_git(struct transport *transport, const char *name,
839 const char *executable, int fd[2])
840 {
841 struct git_transport_data *data = transport->data;
842 data->conn = git_connect(data->fd, transport->url,
843 executable, 0);
844 fd[0] = data->fd[0];
845 fd[1] = data->fd[1];
846 return 0;
847 }
848
849 static int disconnect_git(struct transport *transport)
850 {
851 struct git_transport_data *data = transport->data;
852 if (data->conn) {
853 if (data->got_remote_heads)
854 packet_flush(data->fd[1]);
855 close(data->fd[0]);
856 close(data->fd[1]);
857 finish_connect(data->conn);
858 }
859
860 free(data);
861 return 0;
862 }
863
864 void transport_take_over(struct transport *transport,
865 struct child_process *child)
866 {
867 struct git_transport_data *data;
868
869 if (!transport->smart_options)
870 die("Bug detected: Taking over transport requires non-NULL "
871 "smart_options field.");
872
873 data = xcalloc(1, sizeof(*data));
874 data->options = *transport->smart_options;
875 data->conn = child;
876 data->fd[0] = data->conn->out;
877 data->fd[1] = data->conn->in;
878 data->got_remote_heads = 0;
879 transport->data = data;
880
881 transport->set_option = NULL;
882 transport->get_refs_list = get_refs_via_connect;
883 transport->fetch = fetch_refs_via_pack;
884 transport->push = NULL;
885 transport->push_refs = git_transport_push;
886 transport->disconnect = disconnect_git;
887 transport->smart_options = &(data->options);
888
889 transport->cannot_reuse = 1;
890 }
891
892 static int is_file(const char *url)
893 {
894 struct stat buf;
895 if (stat(url, &buf))
896 return 0;
897 return S_ISREG(buf.st_mode);
898 }
899
900 static int external_specification_len(const char *url)
901 {
902 return strchr(url, ':') - url;
903 }
904
905 struct transport *transport_get(struct remote *remote, const char *url)
906 {
907 const char *helper;
908 struct transport *ret = xcalloc(1, sizeof(*ret));
909
910 ret->progress = isatty(2);
911
912 if (!remote)
913 die("No remote provided to transport_get()");
914
915 ret->got_remote_refs = 0;
916 ret->remote = remote;
917 helper = remote->foreign_vcs;
918
919 if (!url && remote->url)
920 url = remote->url[0];
921 ret->url = url;
922
923 /* maybe it is a foreign URL? */
924 if (url) {
925 const char *p = url;
926
927 while (is_urlschemechar(p == url, *p))
928 p++;
929 if (starts_with(p, "::"))
930 helper = xstrndup(url, p - url);
931 }
932
933 if (helper) {
934 transport_helper_init(ret, helper);
935 } else if (starts_with(url, "rsync:")) {
936 ret->get_refs_list = get_refs_via_rsync;
937 ret->fetch = fetch_objs_via_rsync;
938 ret->push = rsync_transport_push;
939 ret->smart_options = NULL;
940 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
941 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
942 ret->data = data;
943 ret->get_refs_list = get_refs_from_bundle;
944 ret->fetch = fetch_refs_from_bundle;
945 ret->disconnect = close_bundle;
946 ret->smart_options = NULL;
947 } else if (!is_url(url)
948 || starts_with(url, "file://")
949 || starts_with(url, "git://")
950 || starts_with(url, "ssh://")
951 || starts_with(url, "git+ssh://")
952 || starts_with(url, "ssh+git://")) {
953 /* These are builtin smart transports. */
954 struct git_transport_data *data = xcalloc(1, sizeof(*data));
955 ret->data = data;
956 ret->set_option = NULL;
957 ret->get_refs_list = get_refs_via_connect;
958 ret->fetch = fetch_refs_via_pack;
959 ret->push_refs = git_transport_push;
960 ret->connect = connect_git;
961 ret->disconnect = disconnect_git;
962 ret->smart_options = &(data->options);
963
964 data->conn = NULL;
965 data->got_remote_heads = 0;
966 } else {
967 /* Unknown protocol in URL. Pass to external handler. */
968 int len = external_specification_len(url);
969 char *handler = xmalloc(len + 1);
970 handler[len] = 0;
971 strncpy(handler, url, len);
972 transport_helper_init(ret, handler);
973 }
974
975 if (ret->smart_options) {
976 ret->smart_options->thin = 1;
977 ret->smart_options->uploadpack = "git-upload-pack";
978 if (remote->uploadpack)
979 ret->smart_options->uploadpack = remote->uploadpack;
980 ret->smart_options->receivepack = "git-receive-pack";
981 if (remote->receivepack)
982 ret->smart_options->receivepack = remote->receivepack;
983 }
984
985 return ret;
986 }
987
988 int transport_set_option(struct transport *transport,
989 const char *name, const char *value)
990 {
991 int git_reports = 1, protocol_reports = 1;
992
993 if (transport->smart_options)
994 git_reports = set_git_option(transport->smart_options,
995 name, value);
996
997 if (transport->set_option)
998 protocol_reports = transport->set_option(transport, name,
999 value);
1000
1001 /* If either report is 0, report 0 (success). */
1002 if (!git_reports || !protocol_reports)
1003 return 0;
1004 /* If either reports -1 (invalid value), report -1. */
1005 if ((git_reports == -1) || (protocol_reports == -1))
1006 return -1;
1007 /* Otherwise if both report unknown, report unknown. */
1008 return 1;
1009 }
1010
1011 void transport_set_verbosity(struct transport *transport, int verbosity,
1012 int force_progress)
1013 {
1014 if (verbosity >= 1)
1015 transport->verbose = verbosity <= 3 ? verbosity : 3;
1016 if (verbosity < 0)
1017 transport->verbose = -1;
1018
1019 /**
1020 * Rules used to determine whether to report progress (processing aborts
1021 * when a rule is satisfied):
1022 *
1023 * . Report progress, if force_progress is 1 (ie. --progress).
1024 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1025 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1026 * . Report progress if isatty(2) is 1.
1027 **/
1028 if (force_progress >= 0)
1029 transport->progress = !!force_progress;
1030 else
1031 transport->progress = verbosity >= 0 && isatty(2);
1032 }
1033
1034 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1035 {
1036 int i;
1037
1038 fprintf(stderr, "The following submodule paths contain changes that can\n"
1039 "not be found on any remote:\n");
1040 for (i = 0; i < needs_pushing->nr; i++)
1041 printf(" %s\n", needs_pushing->items[i].string);
1042 fprintf(stderr, "\nPlease try\n\n"
1043 " git push --recurse-submodules=on-demand\n\n"
1044 "or cd to the path and use\n\n"
1045 " git push\n\n"
1046 "to push them to a remote.\n\n");
1047
1048 string_list_clear(needs_pushing, 0);
1049
1050 die("Aborting.");
1051 }
1052
1053 static int run_pre_push_hook(struct transport *transport,
1054 struct ref *remote_refs)
1055 {
1056 int ret = 0, x;
1057 struct ref *r;
1058 struct child_process proc;
1059 struct strbuf buf;
1060 const char *argv[4];
1061
1062 if (!(argv[0] = find_hook("pre-push")))
1063 return 0;
1064
1065 argv[1] = transport->remote->name;
1066 argv[2] = transport->url;
1067 argv[3] = NULL;
1068
1069 memset(&proc, 0, sizeof(proc));
1070 proc.argv = argv;
1071 proc.in = -1;
1072
1073 if (start_command(&proc)) {
1074 finish_command(&proc);
1075 return -1;
1076 }
1077
1078 strbuf_init(&buf, 256);
1079
1080 for (r = remote_refs; r; r = r->next) {
1081 if (!r->peer_ref) continue;
1082 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1083 if (r->status == REF_STATUS_REJECT_STALE) continue;
1084 if (r->status == REF_STATUS_UPTODATE) continue;
1085
1086 strbuf_reset(&buf);
1087 strbuf_addf( &buf, "%s %s %s %s\n",
1088 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1089 r->name, sha1_to_hex(r->old_sha1));
1090
1091 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1092 ret = -1;
1093 break;
1094 }
1095 }
1096
1097 strbuf_release(&buf);
1098
1099 x = close(proc.in);
1100 if (!ret)
1101 ret = x;
1102
1103 x = finish_command(&proc);
1104 if (!ret)
1105 ret = x;
1106
1107 return ret;
1108 }
1109
1110 int transport_push(struct transport *transport,
1111 int refspec_nr, const char **refspec, int flags,
1112 unsigned int *reject_reasons)
1113 {
1114 *reject_reasons = 0;
1115 transport_verify_remote_names(refspec_nr, refspec);
1116
1117 if (transport->push) {
1118 /* Maybe FIXME. But no important transport uses this case. */
1119 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1120 die("This transport does not support using --set-upstream");
1121
1122 return transport->push(transport, refspec_nr, refspec, flags);
1123 } else if (transport->push_refs) {
1124 struct ref *remote_refs;
1125 struct ref *local_refs = get_local_heads();
1126 int match_flags = MATCH_REFS_NONE;
1127 int verbose = (transport->verbose > 0);
1128 int quiet = (transport->verbose < 0);
1129 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1130 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1131 int push_ret, ret, err;
1132
1133 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1134 return -1;
1135
1136 remote_refs = transport->get_refs_list(transport, 1);
1137
1138 if (flags & TRANSPORT_PUSH_ALL)
1139 match_flags |= MATCH_REFS_ALL;
1140 if (flags & TRANSPORT_PUSH_MIRROR)
1141 match_flags |= MATCH_REFS_MIRROR;
1142 if (flags & TRANSPORT_PUSH_PRUNE)
1143 match_flags |= MATCH_REFS_PRUNE;
1144 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1145 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1146
1147 if (match_push_refs(local_refs, &remote_refs,
1148 refspec_nr, refspec, match_flags)) {
1149 return -1;
1150 }
1151
1152 if (transport->smart_options &&
1153 transport->smart_options->cas &&
1154 !is_empty_cas(transport->smart_options->cas))
1155 apply_push_cas(transport->smart_options->cas,
1156 transport->remote, remote_refs);
1157
1158 set_ref_status_for_push(remote_refs,
1159 flags & TRANSPORT_PUSH_MIRROR,
1160 flags & TRANSPORT_PUSH_FORCE);
1161
1162 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1163 if (run_pre_push_hook(transport, remote_refs))
1164 return -1;
1165
1166 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1167 struct ref *ref = remote_refs;
1168 for (; ref; ref = ref->next)
1169 if (!is_null_sha1(ref->new_sha1) &&
1170 !push_unpushed_submodules(ref->new_sha1,
1171 transport->remote->name))
1172 die ("Failed to push all needed submodules!");
1173 }
1174
1175 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1176 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1177 struct ref *ref = remote_refs;
1178 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1179
1180 for (; ref; ref = ref->next)
1181 if (!is_null_sha1(ref->new_sha1) &&
1182 find_unpushed_submodules(ref->new_sha1,
1183 transport->remote->name, &needs_pushing))
1184 die_with_unpushed_submodules(&needs_pushing);
1185 }
1186
1187 push_ret = transport->push_refs(transport, remote_refs, flags);
1188 err = push_had_errors(remote_refs);
1189 ret = push_ret | err;
1190
1191 if (!quiet || err)
1192 transport_print_push_status(transport->url, remote_refs,
1193 verbose | porcelain, porcelain,
1194 reject_reasons);
1195
1196 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1197 set_upstreams(transport, remote_refs, pretend);
1198
1199 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1200 struct ref *ref;
1201 for (ref = remote_refs; ref; ref = ref->next)
1202 transport_update_tracking_ref(transport->remote, ref, verbose);
1203 }
1204
1205 if (porcelain && !push_ret)
1206 puts("Done");
1207 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1208 fprintf(stderr, "Everything up-to-date\n");
1209
1210 return ret;
1211 }
1212 return 1;
1213 }
1214
1215 const struct ref *transport_get_remote_refs(struct transport *transport)
1216 {
1217 if (!transport->got_remote_refs) {
1218 transport->remote_refs = transport->get_refs_list(transport, 0);
1219 transport->got_remote_refs = 1;
1220 }
1221
1222 return transport->remote_refs;
1223 }
1224
1225 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1226 {
1227 int rc;
1228 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1229 struct ref **heads = NULL;
1230 struct ref *rm;
1231
1232 for (rm = refs; rm; rm = rm->next) {
1233 nr_refs++;
1234 if (rm->peer_ref &&
1235 !is_null_sha1(rm->old_sha1) &&
1236 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1237 continue;
1238 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1239 heads[nr_heads++] = rm;
1240 }
1241
1242 if (!nr_heads) {
1243 /*
1244 * When deepening of a shallow repository is requested,
1245 * then local and remote refs are likely to still be equal.
1246 * Just feed them all to the fetch method in that case.
1247 * This condition shouldn't be met in a non-deepening fetch
1248 * (see builtin/fetch.c:quickfetch()).
1249 */
1250 heads = xmalloc(nr_refs * sizeof(*heads));
1251 for (rm = refs; rm; rm = rm->next)
1252 heads[nr_heads++] = rm;
1253 }
1254
1255 rc = transport->fetch(transport, nr_heads, heads);
1256
1257 free(heads);
1258 return rc;
1259 }
1260
1261 void transport_unlock_pack(struct transport *transport)
1262 {
1263 if (transport->pack_lockfile) {
1264 unlink_or_warn(transport->pack_lockfile);
1265 free(transport->pack_lockfile);
1266 transport->pack_lockfile = NULL;
1267 }
1268 }
1269
1270 int transport_connect(struct transport *transport, const char *name,
1271 const char *exec, int fd[2])
1272 {
1273 if (transport->connect)
1274 return transport->connect(transport, name, exec, fd);
1275 else
1276 die("Operation not supported by protocol");
1277 }
1278
1279 int transport_disconnect(struct transport *transport)
1280 {
1281 int ret = 0;
1282 if (transport->disconnect)
1283 ret = transport->disconnect(transport);
1284 free(transport);
1285 return ret;
1286 }
1287
1288 /*
1289 * Strip username (and password) from a URL and return
1290 * it in a newly allocated string.
1291 */
1292 char *transport_anonymize_url(const char *url)
1293 {
1294 char *anon_url, *scheme_prefix, *anon_part;
1295 size_t anon_len, prefix_len = 0;
1296
1297 anon_part = strchr(url, '@');
1298 if (url_is_local_not_ssh(url) || !anon_part)
1299 goto literal_copy;
1300
1301 anon_len = strlen(++anon_part);
1302 scheme_prefix = strstr(url, "://");
1303 if (!scheme_prefix) {
1304 if (!strchr(anon_part, ':'))
1305 /* cannot be "me@there:/path/name" */
1306 goto literal_copy;
1307 } else {
1308 const char *cp;
1309 /* make sure scheme is reasonable */
1310 for (cp = url; cp < scheme_prefix; cp++) {
1311 switch (*cp) {
1312 /* RFC 1738 2.1 */
1313 case '+': case '.': case '-':
1314 break; /* ok */
1315 default:
1316 if (isalnum(*cp))
1317 break;
1318 /* it isn't */
1319 goto literal_copy;
1320 }
1321 }
1322 /* @ past the first slash does not count */
1323 cp = strchr(scheme_prefix + 3, '/');
1324 if (cp && cp < anon_part)
1325 goto literal_copy;
1326 prefix_len = scheme_prefix - url + 3;
1327 }
1328 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1329 memcpy(anon_url, url, prefix_len);
1330 memcpy(anon_url + prefix_len, anon_part, anon_len);
1331 return anon_url;
1332 literal_copy:
1333 return xstrdup(url);
1334 }
1335
1336 struct alternate_refs_data {
1337 alternate_ref_fn *fn;
1338 void *data;
1339 };
1340
1341 static int refs_from_alternate_cb(struct alternate_object_database *e,
1342 void *data)
1343 {
1344 char *other;
1345 size_t len;
1346 struct remote *remote;
1347 struct transport *transport;
1348 const struct ref *extra;
1349 struct alternate_refs_data *cb = data;
1350
1351 e->name[-1] = '\0';
1352 other = xstrdup(real_path(e->base));
1353 e->name[-1] = '/';
1354 len = strlen(other);
1355
1356 while (other[len-1] == '/')
1357 other[--len] = '\0';
1358 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1359 goto out;
1360 /* Is this a git repository with refs? */
1361 memcpy(other + len - 8, "/refs", 6);
1362 if (!is_directory(other))
1363 goto out;
1364 other[len - 8] = '\0';
1365 remote = remote_get(other);
1366 transport = transport_get(remote, other);
1367 for (extra = transport_get_remote_refs(transport);
1368 extra;
1369 extra = extra->next)
1370 cb->fn(extra, cb->data);
1371 transport_disconnect(transport);
1372 out:
1373 free(other);
1374 return 0;
1375 }
1376
1377 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1378 {
1379 struct alternate_refs_data cb;
1380 cb.fn = fn;
1381 cb.data = data;
1382 foreach_alt_odb(refs_from_alternate_cb, &cb);
1383 }
Jonathan Nieder’s miscellaneous git branches