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calloc() and xcalloc() takes nmemb and then size
[alt-git.git] / transport.c
blob662421bb5e076177f0fc320330287d3da50303a5
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 child_process rsync;
267
268 memset(&rsync, 0, sizeof(rsync));
269 rsync.stdout_to_stderr = 1;
270 argv_array_push(&rsync.args, "rsync");
271 argv_array_push(&rsync.args, (transport->verbose > 1) ? "-rv" : "-r");
272 argv_array_push(&rsync.args, "--ignore-existing");
273 argv_array_push(&rsync.args, "--exclude");
274 argv_array_push(&rsync.args, "info");
275 argv_array_pushf(&rsync.args, "%s/objects/", rsync_url(transport->url));
276 argv_array_push(&rsync.args, get_object_directory());
277
278 /* NEEDSWORK: handle one level of alternates */
279 return run_command(&rsync);
280 }
281
282 static int write_one_ref(const char *name, const unsigned char *sha1,
283 int flags, void *data)
284 {
285 struct strbuf *buf = data;
286 int len = buf->len;
287 FILE *f;
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 !(f = fopen(buf->buf, "w")) ||
297 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
298 fclose(f))
299 return error("problems writing temporary file %s", buf->buf);
300 strbuf_setlen(buf, len);
301 return 0;
302 }
303
304 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
305 int refspec_nr, const char **refspec)
306 {
307 int i;
308
309 for (i = 0; i < refspec_nr; i++) {
310 unsigned char sha1[20];
311 char *ref;
312
313 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
314 return error("Could not get ref %s", refspec[i]);
315
316 if (write_one_ref(ref, sha1, 0, temp_dir)) {
317 free(ref);
318 return -1;
319 }
320 free(ref);
321 }
322 return 0;
323 }
324
325 static int rsync_transport_push(struct transport *transport,
326 int refspec_nr, const char **refspec, int flags)
327 {
328 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
329 int result = 0, i;
330 struct child_process rsync;
331 const char *args[10];
332
333 if (flags & TRANSPORT_PUSH_MIRROR)
334 return error("rsync transport does not support mirror mode");
335
336 /* first push the objects */
337
338 strbuf_addstr(&buf, rsync_url(transport->url));
339 strbuf_addch(&buf, '/');
340
341 memset(&rsync, 0, sizeof(rsync));
342 rsync.argv = args;
343 rsync.stdout_to_stderr = 1;
344 i = 0;
345 args[i++] = "rsync";
346 args[i++] = "-a";
347 if (flags & TRANSPORT_PUSH_DRY_RUN)
348 args[i++] = "--dry-run";
349 if (transport->verbose > 1)
350 args[i++] = "-v";
351 args[i++] = "--ignore-existing";
352 args[i++] = "--exclude";
353 args[i++] = "info";
354 args[i++] = get_object_directory();
355 args[i++] = buf.buf;
356 args[i++] = NULL;
357
358 if (run_command(&rsync))
359 return error("Could not push objects to %s",
360 rsync_url(transport->url));
361
362 /* copy the refs to the temporary directory; they could be packed. */
363
364 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
365 if (!mkdtemp(temp_dir.buf))
366 die_errno ("Could not make temporary directory");
367 strbuf_addch(&temp_dir, '/');
368
369 if (flags & TRANSPORT_PUSH_ALL) {
370 if (for_each_ref(write_one_ref, &temp_dir))
371 return -1;
372 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
373 return -1;
374
375 i = 2;
376 if (flags & TRANSPORT_PUSH_DRY_RUN)
377 args[i++] = "--dry-run";
378 if (!(flags & TRANSPORT_PUSH_FORCE))
379 args[i++] = "--ignore-existing";
380 args[i++] = temp_dir.buf;
381 args[i++] = rsync_url(transport->url);
382 args[i++] = NULL;
383 if (run_command(&rsync))
384 result = error("Could not push to %s",
385 rsync_url(transport->url));
386
387 if (remove_dir_recursively(&temp_dir, 0))
388 warning ("Could not remove temporary directory %s.",
389 temp_dir.buf);
390
391 strbuf_release(&buf);
392 strbuf_release(&temp_dir);
393
394 return result;
395 }
396
397 struct bundle_transport_data {
398 int fd;
399 struct bundle_header header;
400 };
401
402 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
403 {
404 struct bundle_transport_data *data = transport->data;
405 struct ref *result = NULL;
406 int i;
407
408 if (for_push)
409 return NULL;
410
411 if (data->fd > 0)
412 close(data->fd);
413 data->fd = read_bundle_header(transport->url, &data->header);
414 if (data->fd < 0)
415 die ("Could not read bundle '%s'.", transport->url);
416 for (i = 0; i < data->header.references.nr; i++) {
417 struct ref_list_entry *e = data->header.references.list + i;
418 struct ref *ref = alloc_ref(e->name);
419 hashcpy(ref->old_sha1, e->sha1);
420 ref->next = result;
421 result = ref;
422 }
423 return result;
424 }
425
426 static int fetch_refs_from_bundle(struct transport *transport,
427 int nr_heads, struct ref **to_fetch)
428 {
429 struct bundle_transport_data *data = transport->data;
430 return unbundle(&data->header, data->fd,
431 transport->progress ? BUNDLE_VERBOSE : 0);
432 }
433
434 static int close_bundle(struct transport *transport)
435 {
436 struct bundle_transport_data *data = transport->data;
437 if (data->fd > 0)
438 close(data->fd);
439 free(data);
440 return 0;
441 }
442
443 struct git_transport_data {
444 struct git_transport_options options;
445 struct child_process *conn;
446 int fd[2];
447 unsigned got_remote_heads : 1;
448 struct sha1_array extra_have;
449 struct sha1_array shallow;
450 };
451
452 static int set_git_option(struct git_transport_options *opts,
453 const char *name, const char *value)
454 {
455 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
456 opts->uploadpack = value;
457 return 0;
458 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
459 opts->receivepack = value;
460 return 0;
461 } else if (!strcmp(name, TRANS_OPT_THIN)) {
462 opts->thin = !!value;
463 return 0;
464 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
465 opts->followtags = !!value;
466 return 0;
467 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
468 opts->keep = !!value;
469 return 0;
470 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
471 opts->update_shallow = !!value;
472 return 0;
473 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
474 if (!value)
475 opts->depth = 0;
476 else {
477 char *end;
478 opts->depth = strtol(value, &end, 0);
479 if (*end)
480 die("transport: invalid depth option '%s'", value);
481 }
482 return 0;
483 }
484 return 1;
485 }
486
487 static int connect_setup(struct transport *transport, int for_push, int verbose)
488 {
489 struct git_transport_data *data = transport->data;
490
491 if (data->conn)
492 return 0;
493
494 data->conn = git_connect(data->fd, transport->url,
495 for_push ? data->options.receivepack :
496 data->options.uploadpack,
497 verbose ? CONNECT_VERBOSE : 0);
498
499 return 0;
500 }
501
502 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
503 {
504 struct git_transport_data *data = transport->data;
505 struct ref *refs;
506
507 connect_setup(transport, for_push, 0);
508 get_remote_heads(data->fd[0], NULL, 0, &refs,
509 for_push ? REF_NORMAL : 0,
510 &data->extra_have,
511 &data->shallow);
512 data->got_remote_heads = 1;
513
514 return refs;
515 }
516
517 static int fetch_refs_via_pack(struct transport *transport,
518 int nr_heads, struct ref **to_fetch)
519 {
520 struct git_transport_data *data = transport->data;
521 const struct ref *refs;
522 char *dest = xstrdup(transport->url);
523 struct fetch_pack_args args;
524 struct ref *refs_tmp = NULL;
525
526 memset(&args, 0, sizeof(args));
527 args.uploadpack = data->options.uploadpack;
528 args.keep_pack = data->options.keep;
529 args.lock_pack = 1;
530 args.use_thin_pack = data->options.thin;
531 args.include_tag = data->options.followtags;
532 args.verbose = (transport->verbose > 1);
533 args.quiet = (transport->verbose < 0);
534 args.no_progress = !transport->progress;
535 args.depth = data->options.depth;
536 args.check_self_contained_and_connected =
537 data->options.check_self_contained_and_connected;
538 args.cloning = transport->cloning;
539 args.update_shallow = data->options.update_shallow;
540
541 if (!data->got_remote_heads) {
542 connect_setup(transport, 0, 0);
543 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
544 NULL, &data->shallow);
545 data->got_remote_heads = 1;
546 }
547
548 refs = fetch_pack(&args, data->fd, data->conn,
549 refs_tmp ? refs_tmp : transport->remote_refs,
550 dest, to_fetch, nr_heads, &data->shallow,
551 &transport->pack_lockfile);
552 close(data->fd[0]);
553 close(data->fd[1]);
554 if (finish_connect(data->conn))
555 refs = NULL;
556 data->conn = NULL;
557 data->got_remote_heads = 0;
558 data->options.self_contained_and_connected =
559 args.self_contained_and_connected;
560
561 free_refs(refs_tmp);
562
563 free(dest);
564 return (refs ? 0 : -1);
565 }
566
567 static int push_had_errors(struct ref *ref)
568 {
569 for (; ref; ref = ref->next) {
570 switch (ref->status) {
571 case REF_STATUS_NONE:
572 case REF_STATUS_UPTODATE:
573 case REF_STATUS_OK:
574 break;
575 default:
576 return 1;
577 }
578 }
579 return 0;
580 }
581
582 int transport_refs_pushed(struct ref *ref)
583 {
584 for (; ref; ref = ref->next) {
585 switch(ref->status) {
586 case REF_STATUS_NONE:
587 case REF_STATUS_UPTODATE:
588 break;
589 default:
590 return 1;
591 }
592 }
593 return 0;
594 }
595
596 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
597 {
598 struct refspec rs;
599
600 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
601 return;
602
603 rs.src = ref->name;
604 rs.dst = NULL;
605
606 if (!remote_find_tracking(remote, &rs)) {
607 if (verbose)
608 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
609 if (ref->deletion) {
610 delete_ref(rs.dst, NULL, 0);
611 } else
612 update_ref("update by push", rs.dst,
613 ref->new_sha1, NULL, 0, 0);
614 free(rs.dst);
615 }
616 }
617
618 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
619 {
620 if (porcelain) {
621 if (from)
622 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
623 else
624 fprintf(stdout, "%c\t:%s\t", flag, to->name);
625 if (msg)
626 fprintf(stdout, "%s (%s)\n", summary, msg);
627 else
628 fprintf(stdout, "%s\n", summary);
629 } else {
630 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
631 if (from)
632 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
633 else
634 fputs(prettify_refname(to->name), stderr);
635 if (msg) {
636 fputs(" (", stderr);
637 fputs(msg, stderr);
638 fputc(')', stderr);
639 }
640 fputc('\n', stderr);
641 }
642 }
643
644 static const char *status_abbrev(unsigned char sha1[20])
645 {
646 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
647 }
648
649 static void print_ok_ref_status(struct ref *ref, int porcelain)
650 {
651 if (ref->deletion)
652 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
653 else if (is_null_sha1(ref->old_sha1))
654 print_ref_status('*',
655 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
656 "[new branch]"),
657 ref, ref->peer_ref, NULL, porcelain);
658 else {
659 char quickref[84];
660 char type;
661 const char *msg;
662
663 strcpy(quickref, status_abbrev(ref->old_sha1));
664 if (ref->forced_update) {
665 strcat(quickref, "...");
666 type = '+';
667 msg = "forced update";
668 } else {
669 strcat(quickref, "..");
670 type = ' ';
671 msg = NULL;
672 }
673 strcat(quickref, status_abbrev(ref->new_sha1));
674
675 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
676 }
677 }
678
679 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
680 {
681 if (!count)
682 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
683
684 switch(ref->status) {
685 case REF_STATUS_NONE:
686 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
687 break;
688 case REF_STATUS_REJECT_NODELETE:
689 print_ref_status('!', "[rejected]", ref, NULL,
690 "remote does not support deleting refs", porcelain);
691 break;
692 case REF_STATUS_UPTODATE:
693 print_ref_status('=', "[up to date]", ref,
694 ref->peer_ref, NULL, porcelain);
695 break;
696 case REF_STATUS_REJECT_NONFASTFORWARD:
697 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
698 "non-fast-forward", porcelain);
699 break;
700 case REF_STATUS_REJECT_ALREADY_EXISTS:
701 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
702 "already exists", porcelain);
703 break;
704 case REF_STATUS_REJECT_FETCH_FIRST:
705 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
706 "fetch first", porcelain);
707 break;
708 case REF_STATUS_REJECT_NEEDS_FORCE:
709 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
710 "needs force", porcelain);
711 break;
712 case REF_STATUS_REJECT_STALE:
713 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
714 "stale info", porcelain);
715 break;
716 case REF_STATUS_REJECT_SHALLOW:
717 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
718 "new shallow roots not allowed", porcelain);
719 break;
720 case REF_STATUS_REMOTE_REJECT:
721 print_ref_status('!', "[remote rejected]", ref,
722 ref->deletion ? NULL : ref->peer_ref,
723 ref->remote_status, porcelain);
724 break;
725 case REF_STATUS_EXPECTING_REPORT:
726 print_ref_status('!', "[remote failure]", ref,
727 ref->deletion ? NULL : ref->peer_ref,
728 "remote failed to report status", porcelain);
729 break;
730 case REF_STATUS_OK:
731 print_ok_ref_status(ref, porcelain);
732 break;
733 }
734
735 return 1;
736 }
737
738 void transport_print_push_status(const char *dest, struct ref *refs,
739 int verbose, int porcelain, unsigned int *reject_reasons)
740 {
741 struct ref *ref;
742 int n = 0;
743 unsigned char head_sha1[20];
744 char *head;
745
746 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
747
748 if (verbose) {
749 for (ref = refs; ref; ref = ref->next)
750 if (ref->status == REF_STATUS_UPTODATE)
751 n += print_one_push_status(ref, dest, n, porcelain);
752 }
753
754 for (ref = refs; ref; ref = ref->next)
755 if (ref->status == REF_STATUS_OK)
756 n += print_one_push_status(ref, dest, n, porcelain);
757
758 *reject_reasons = 0;
759 for (ref = refs; ref; ref = ref->next) {
760 if (ref->status != REF_STATUS_NONE &&
761 ref->status != REF_STATUS_UPTODATE &&
762 ref->status != REF_STATUS_OK)
763 n += print_one_push_status(ref, dest, n, porcelain);
764 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
765 if (head != NULL && !strcmp(head, ref->name))
766 *reject_reasons |= REJECT_NON_FF_HEAD;
767 else
768 *reject_reasons |= REJECT_NON_FF_OTHER;
769 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
770 *reject_reasons |= REJECT_ALREADY_EXISTS;
771 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
772 *reject_reasons |= REJECT_FETCH_FIRST;
773 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
774 *reject_reasons |= REJECT_NEEDS_FORCE;
775 }
776 }
777 }
778
779 void transport_verify_remote_names(int nr_heads, const char **heads)
780 {
781 int i;
782
783 for (i = 0; i < nr_heads; i++) {
784 const char *local = heads[i];
785 const char *remote = strrchr(heads[i], ':');
786
787 if (*local == '+')
788 local++;
789
790 /* A matching refspec is okay. */
791 if (remote == local && remote[1] == '\0')
792 continue;
793
794 remote = remote ? (remote + 1) : local;
795 if (check_refname_format(remote,
796 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
797 die("remote part of refspec is not a valid name in %s",
798 heads[i]);
799 }
800 }
801
802 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
803 {
804 struct git_transport_data *data = transport->data;
805 struct send_pack_args args;
806 int ret;
807
808 if (!data->got_remote_heads) {
809 struct ref *tmp_refs;
810 connect_setup(transport, 1, 0);
811
812 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
813 NULL, &data->shallow);
814 data->got_remote_heads = 1;
815 }
816
817 memset(&args, 0, sizeof(args));
818 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
819 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
820 args.use_thin_pack = data->options.thin;
821 args.verbose = (transport->verbose > 0);
822 args.quiet = (transport->verbose < 0);
823 args.progress = transport->progress;
824 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
825 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
826
827 ret = send_pack(&args, data->fd, data->conn, remote_refs,
828 &data->extra_have);
829
830 close(data->fd[1]);
831 close(data->fd[0]);
832 ret |= finish_connect(data->conn);
833 data->conn = NULL;
834 data->got_remote_heads = 0;
835
836 return ret;
837 }
838
839 static int connect_git(struct transport *transport, const char *name,
840 const char *executable, int fd[2])
841 {
842 struct git_transport_data *data = transport->data;
843 data->conn = git_connect(data->fd, transport->url,
844 executable, 0);
845 fd[0] = data->fd[0];
846 fd[1] = data->fd[1];
847 return 0;
848 }
849
850 static int disconnect_git(struct transport *transport)
851 {
852 struct git_transport_data *data = transport->data;
853 if (data->conn) {
854 if (data->got_remote_heads)
855 packet_flush(data->fd[1]);
856 close(data->fd[0]);
857 close(data->fd[1]);
858 finish_connect(data->conn);
859 }
860
861 free(data);
862 return 0;
863 }
864
865 void transport_take_over(struct transport *transport,
866 struct child_process *child)
867 {
868 struct git_transport_data *data;
869
870 if (!transport->smart_options)
871 die("Bug detected: Taking over transport requires non-NULL "
872 "smart_options field.");
873
874 data = xcalloc(1, sizeof(*data));
875 data->options = *transport->smart_options;
876 data->conn = child;
877 data->fd[0] = data->conn->out;
878 data->fd[1] = data->conn->in;
879 data->got_remote_heads = 0;
880 transport->data = data;
881
882 transport->set_option = NULL;
883 transport->get_refs_list = get_refs_via_connect;
884 transport->fetch = fetch_refs_via_pack;
885 transport->push = NULL;
886 transport->push_refs = git_transport_push;
887 transport->disconnect = disconnect_git;
888 transport->smart_options = &(data->options);
889
890 transport->cannot_reuse = 1;
891 }
892
893 static int is_file(const char *url)
894 {
895 struct stat buf;
896 if (stat(url, &buf))
897 return 0;
898 return S_ISREG(buf.st_mode);
899 }
900
901 static int external_specification_len(const char *url)
902 {
903 return strchr(url, ':') - url;
904 }
905
906 struct transport *transport_get(struct remote *remote, const char *url)
907 {
908 const char *helper;
909 struct transport *ret = xcalloc(1, sizeof(*ret));
910
911 ret->progress = isatty(2);
912
913 if (!remote)
914 die("No remote provided to transport_get()");
915
916 ret->got_remote_refs = 0;
917 ret->remote = remote;
918 helper = remote->foreign_vcs;
919
920 if (!url && remote->url)
921 url = remote->url[0];
922 ret->url = url;
923
924 /* maybe it is a foreign URL? */
925 if (url) {
926 const char *p = url;
927
928 while (is_urlschemechar(p == url, *p))
929 p++;
930 if (starts_with(p, "::"))
931 helper = xstrndup(url, p - url);
932 }
933
934 if (helper) {
935 transport_helper_init(ret, helper);
936 } else if (starts_with(url, "rsync:")) {
937 ret->get_refs_list = get_refs_via_rsync;
938 ret->fetch = fetch_objs_via_rsync;
939 ret->push = rsync_transport_push;
940 ret->smart_options = NULL;
941 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
942 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
943 ret->data = data;
944 ret->get_refs_list = get_refs_from_bundle;
945 ret->fetch = fetch_refs_from_bundle;
946 ret->disconnect = close_bundle;
947 ret->smart_options = NULL;
948 } else if (!is_url(url)
949 || starts_with(url, "file://")
950 || starts_with(url, "git://")
951 || starts_with(url, "ssh://")
952 || starts_with(url, "git+ssh://")
953 || starts_with(url, "ssh+git://")) {
954 /* These are builtin smart transports. */
955 struct git_transport_data *data = xcalloc(1, sizeof(*data));
956 ret->data = data;
957 ret->set_option = NULL;
958 ret->get_refs_list = get_refs_via_connect;
959 ret->fetch = fetch_refs_via_pack;
960 ret->push_refs = git_transport_push;
961 ret->connect = connect_git;
962 ret->disconnect = disconnect_git;
963 ret->smart_options = &(data->options);
964
965 data->conn = NULL;
966 data->got_remote_heads = 0;
967 } else {
968 /* Unknown protocol in URL. Pass to external handler. */
969 int len = external_specification_len(url);
970 char *handler = xmalloc(len + 1);
971 handler[len] = 0;
972 strncpy(handler, url, len);
973 transport_helper_init(ret, handler);
974 }
975
976 if (ret->smart_options) {
977 ret->smart_options->thin = 1;
978 ret->smart_options->uploadpack = "git-upload-pack";
979 if (remote->uploadpack)
980 ret->smart_options->uploadpack = remote->uploadpack;
981 ret->smart_options->receivepack = "git-receive-pack";
982 if (remote->receivepack)
983 ret->smart_options->receivepack = remote->receivepack;
984 }
985
986 return ret;
987 }
988
989 int transport_set_option(struct transport *transport,
990 const char *name, const char *value)
991 {
992 int git_reports = 1, protocol_reports = 1;
993
994 if (transport->smart_options)
995 git_reports = set_git_option(transport->smart_options,
996 name, value);
997
998 if (transport->set_option)
999 protocol_reports = transport->set_option(transport, name,
1000 value);
1001
1002 /* If either report is 0, report 0 (success). */
1003 if (!git_reports || !protocol_reports)
1004 return 0;
1005 /* If either reports -1 (invalid value), report -1. */
1006 if ((git_reports == -1) || (protocol_reports == -1))
1007 return -1;
1008 /* Otherwise if both report unknown, report unknown. */
1009 return 1;
1010 }
1011
1012 void transport_set_verbosity(struct transport *transport, int verbosity,
1013 int force_progress)
1014 {
1015 if (verbosity >= 1)
1016 transport->verbose = verbosity <= 3 ? verbosity : 3;
1017 if (verbosity < 0)
1018 transport->verbose = -1;
1019
1020 /**
1021 * Rules used to determine whether to report progress (processing aborts
1022 * when a rule is satisfied):
1023 *
1024 * . Report progress, if force_progress is 1 (ie. --progress).
1025 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1026 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1027 * . Report progress if isatty(2) is 1.
1028 **/
1029 if (force_progress >= 0)
1030 transport->progress = !!force_progress;
1031 else
1032 transport->progress = verbosity >= 0 && isatty(2);
1033 }
1034
1035 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1036 {
1037 int i;
1038
1039 fprintf(stderr, "The following submodule paths contain changes that can\n"
1040 "not be found on any remote:\n");
1041 for (i = 0; i < needs_pushing->nr; i++)
1042 printf(" %s\n", needs_pushing->items[i].string);
1043 fprintf(stderr, "\nPlease try\n\n"
1044 " git push --recurse-submodules=on-demand\n\n"
1045 "or cd to the path and use\n\n"
1046 " git push\n\n"
1047 "to push them to a remote.\n\n");
1048
1049 string_list_clear(needs_pushing, 0);
1050
1051 die("Aborting.");
1052 }
1053
1054 static int run_pre_push_hook(struct transport *transport,
1055 struct ref *remote_refs)
1056 {
1057 int ret = 0, x;
1058 struct ref *r;
1059 struct child_process proc;
1060 struct strbuf buf;
1061 const char *argv[4];
1062
1063 if (!(argv[0] = find_hook("pre-push")))
1064 return 0;
1065
1066 argv[1] = transport->remote->name;
1067 argv[2] = transport->url;
1068 argv[3] = NULL;
1069
1070 memset(&proc, 0, sizeof(proc));
1071 proc.argv = argv;
1072 proc.in = -1;
1073
1074 if (start_command(&proc)) {
1075 finish_command(&proc);
1076 return -1;
1077 }
1078
1079 strbuf_init(&buf, 256);
1080
1081 for (r = remote_refs; r; r = r->next) {
1082 if (!r->peer_ref) continue;
1083 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1084 if (r->status == REF_STATUS_REJECT_STALE) continue;
1085 if (r->status == REF_STATUS_UPTODATE) continue;
1086
1087 strbuf_reset(&buf);
1088 strbuf_addf( &buf, "%s %s %s %s\n",
1089 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1090 r->name, sha1_to_hex(r->old_sha1));
1091
1092 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1093 ret = -1;
1094 break;
1095 }
1096 }
1097
1098 strbuf_release(&buf);
1099
1100 x = close(proc.in);
1101 if (!ret)
1102 ret = x;
1103
1104 x = finish_command(&proc);
1105 if (!ret)
1106 ret = x;
1107
1108 return ret;
1109 }
1110
1111 int transport_push(struct transport *transport,
1112 int refspec_nr, const char **refspec, int flags,
1113 unsigned int *reject_reasons)
1114 {
1115 *reject_reasons = 0;
1116 transport_verify_remote_names(refspec_nr, refspec);
1117
1118 if (transport->push) {
1119 /* Maybe FIXME. But no important transport uses this case. */
1120 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1121 die("This transport does not support using --set-upstream");
1122
1123 return transport->push(transport, refspec_nr, refspec, flags);
1124 } else if (transport->push_refs) {
1125 struct ref *remote_refs;
1126 struct ref *local_refs = get_local_heads();
1127 int match_flags = MATCH_REFS_NONE;
1128 int verbose = (transport->verbose > 0);
1129 int quiet = (transport->verbose < 0);
1130 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1131 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1132 int push_ret, ret, err;
1133
1134 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1135 return -1;
1136
1137 remote_refs = transport->get_refs_list(transport, 1);
1138
1139 if (flags & TRANSPORT_PUSH_ALL)
1140 match_flags |= MATCH_REFS_ALL;
1141 if (flags & TRANSPORT_PUSH_MIRROR)
1142 match_flags |= MATCH_REFS_MIRROR;
1143 if (flags & TRANSPORT_PUSH_PRUNE)
1144 match_flags |= MATCH_REFS_PRUNE;
1145 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1146 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1147
1148 if (match_push_refs(local_refs, &remote_refs,
1149 refspec_nr, refspec, match_flags)) {
1150 return -1;
1151 }
1152
1153 if (transport->smart_options &&
1154 transport->smart_options->cas &&
1155 !is_empty_cas(transport->smart_options->cas))
1156 apply_push_cas(transport->smart_options->cas,
1157 transport->remote, remote_refs);
1158
1159 set_ref_status_for_push(remote_refs,
1160 flags & TRANSPORT_PUSH_MIRROR,
1161 flags & TRANSPORT_PUSH_FORCE);
1162
1163 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1164 if (run_pre_push_hook(transport, remote_refs))
1165 return -1;
1166
1167 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1168 struct ref *ref = remote_refs;
1169 for (; ref; ref = ref->next)
1170 if (!is_null_sha1(ref->new_sha1) &&
1171 !push_unpushed_submodules(ref->new_sha1,
1172 transport->remote->name))
1173 die ("Failed to push all needed submodules!");
1174 }
1175
1176 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1177 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1178 struct ref *ref = remote_refs;
1179 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1180
1181 for (; ref; ref = ref->next)
1182 if (!is_null_sha1(ref->new_sha1) &&
1183 find_unpushed_submodules(ref->new_sha1,
1184 transport->remote->name, &needs_pushing))
1185 die_with_unpushed_submodules(&needs_pushing);
1186 }
1187
1188 push_ret = transport->push_refs(transport, remote_refs, flags);
1189 err = push_had_errors(remote_refs);
1190 ret = push_ret | err;
1191
1192 if (!quiet || err)
1193 transport_print_push_status(transport->url, remote_refs,
1194 verbose | porcelain, porcelain,
1195 reject_reasons);
1196
1197 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1198 set_upstreams(transport, remote_refs, pretend);
1199
1200 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1201 struct ref *ref;
1202 for (ref = remote_refs; ref; ref = ref->next)
1203 transport_update_tracking_ref(transport->remote, ref, verbose);
1204 }
1205
1206 if (porcelain && !push_ret)
1207 puts("Done");
1208 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1209 fprintf(stderr, "Everything up-to-date\n");
1210
1211 return ret;
1212 }
1213 return 1;
1214 }
1215
1216 const struct ref *transport_get_remote_refs(struct transport *transport)
1217 {
1218 if (!transport->got_remote_refs) {
1219 transport->remote_refs = transport->get_refs_list(transport, 0);
1220 transport->got_remote_refs = 1;
1221 }
1222
1223 return transport->remote_refs;
1224 }
1225
1226 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1227 {
1228 int rc;
1229 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1230 struct ref **heads = NULL;
1231 struct ref *rm;
1232
1233 for (rm = refs; rm; rm = rm->next) {
1234 nr_refs++;
1235 if (rm->peer_ref &&
1236 !is_null_sha1(rm->old_sha1) &&
1237 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1238 continue;
1239 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1240 heads[nr_heads++] = rm;
1241 }
1242
1243 if (!nr_heads) {
1244 /*
1245 * When deepening of a shallow repository is requested,
1246 * then local and remote refs are likely to still be equal.
1247 * Just feed them all to the fetch method in that case.
1248 * This condition shouldn't be met in a non-deepening fetch
1249 * (see builtin/fetch.c:quickfetch()).
1250 */
1251 heads = xmalloc(nr_refs * sizeof(*heads));
1252 for (rm = refs; rm; rm = rm->next)
1253 heads[nr_heads++] = rm;
1254 }
1255
1256 rc = transport->fetch(transport, nr_heads, heads);
1257
1258 free(heads);
1259 return rc;
1260 }
1261
1262 void transport_unlock_pack(struct transport *transport)
1263 {
1264 if (transport->pack_lockfile) {
1265 unlink_or_warn(transport->pack_lockfile);
1266 free(transport->pack_lockfile);
1267 transport->pack_lockfile = NULL;
1268 }
1269 }
1270
1271 int transport_connect(struct transport *transport, const char *name,
1272 const char *exec, int fd[2])
1273 {
1274 if (transport->connect)
1275 return transport->connect(transport, name, exec, fd);
1276 else
1277 die("Operation not supported by protocol");
1278 }
1279
1280 int transport_disconnect(struct transport *transport)
1281 {
1282 int ret = 0;
1283 if (transport->disconnect)
1284 ret = transport->disconnect(transport);
1285 free(transport);
1286 return ret;
1287 }
1288
1289 /*
1290 * Strip username (and password) from a URL and return
1291 * it in a newly allocated string.
1292 */
1293 char *transport_anonymize_url(const char *url)
1294 {
1295 char *anon_url, *scheme_prefix, *anon_part;
1296 size_t anon_len, prefix_len = 0;
1297
1298 anon_part = strchr(url, '@');
1299 if (url_is_local_not_ssh(url) || !anon_part)
1300 goto literal_copy;
1301
1302 anon_len = strlen(++anon_part);
1303 scheme_prefix = strstr(url, "://");
1304 if (!scheme_prefix) {
1305 if (!strchr(anon_part, ':'))
1306 /* cannot be "me@there:/path/name" */
1307 goto literal_copy;
1308 } else {
1309 const char *cp;
1310 /* make sure scheme is reasonable */
1311 for (cp = url; cp < scheme_prefix; cp++) {
1312 switch (*cp) {
1313 /* RFC 1738 2.1 */
1314 case '+': case '.': case '-':
1315 break; /* ok */
1316 default:
1317 if (isalnum(*cp))
1318 break;
1319 /* it isn't */
1320 goto literal_copy;
1321 }
1322 }
1323 /* @ past the first slash does not count */
1324 cp = strchr(scheme_prefix + 3, '/');
1325 if (cp && cp < anon_part)
1326 goto literal_copy;
1327 prefix_len = scheme_prefix - url + 3;
1328 }
1329 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1330 memcpy(anon_url, url, prefix_len);
1331 memcpy(anon_url + prefix_len, anon_part, anon_len);
1332 return anon_url;
1333 literal_copy:
1334 return xstrdup(url);
1335 }
1336
1337 struct alternate_refs_data {
1338 alternate_ref_fn *fn;
1339 void *data;
1340 };
1341
1342 static int refs_from_alternate_cb(struct alternate_object_database *e,
1343 void *data)
1344 {
1345 char *other;
1346 size_t len;
1347 struct remote *remote;
1348 struct transport *transport;
1349 const struct ref *extra;
1350 struct alternate_refs_data *cb = data;
1351
1352 e->name[-1] = '\0';
1353 other = xstrdup(real_path(e->base));
1354 e->name[-1] = '/';
1355 len = strlen(other);
1356
1357 while (other[len-1] == '/')
1358 other[--len] = '\0';
1359 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1360 goto out;
1361 /* Is this a git repository with refs? */
1362 memcpy(other + len - 8, "/refs", 6);
1363 if (!is_directory(other))
1364 goto out;
1365 other[len - 8] = '\0';
1366 remote = remote_get(other);
1367 transport = transport_get(remote, other);
1368 for (extra = transport_get_remote_refs(transport);
1369 extra;
1370 extra = extra->next)
1371 cb->fn(extra, cb->data);
1372 transport_disconnect(transport);
1373 out:
1374 free(other);
1375 return 0;
1376 }
1377
1378 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1379 {
1380 struct alternate_refs_data cb;
1381 cb.fn = fn;
1382 cb.data = data;
1383 foreach_alt_odb(refs_from_alternate_cb, &cb);
1384 }
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