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hashmap: add string interning API
[alt-git.git] / transport.c
blob325f03e1eef97df296bb1cc9f7d2d33c218dde26
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 return !starts_with(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
196 }
197
198 static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
199 {
200 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
201 struct ref dummy = {NULL}, *tail = &dummy;
202 struct child_process rsync;
203 const char *args[5];
204 int temp_dir_len;
205
206 if (for_push)
207 return NULL;
208
209 /* copy the refs to the temporary directory */
210
211 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
212 if (!mkdtemp(temp_dir.buf))
213 die_errno ("Could not make temporary directory");
214 temp_dir_len = temp_dir.len;
215
216 strbuf_addstr(&buf, rsync_url(transport->url));
217 strbuf_addstr(&buf, "/refs");
218
219 memset(&rsync, 0, sizeof(rsync));
220 rsync.argv = args;
221 rsync.stdout_to_stderr = 1;
222 args[0] = "rsync";
223 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
224 args[2] = buf.buf;
225 args[3] = temp_dir.buf;
226 args[4] = NULL;
227
228 if (run_command(&rsync))
229 die ("Could not run rsync to get refs");
230
231 strbuf_reset(&buf);
232 strbuf_addstr(&buf, rsync_url(transport->url));
233 strbuf_addstr(&buf, "/packed-refs");
234
235 args[2] = buf.buf;
236
237 if (run_command(&rsync))
238 die ("Could not run rsync to get refs");
239
240 /* read the copied refs */
241
242 strbuf_addstr(&temp_dir, "/refs");
243 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
244 strbuf_setlen(&temp_dir, temp_dir_len);
245
246 tail = &dummy;
247 strbuf_addstr(&temp_dir, "/packed-refs");
248 insert_packed_refs(temp_dir.buf, &tail);
249 strbuf_setlen(&temp_dir, temp_dir_len);
250
251 if (remove_dir_recursively(&temp_dir, 0))
252 warning ("Error removing temporary directory %s.",
253 temp_dir.buf);
254
255 strbuf_release(&buf);
256 strbuf_release(&temp_dir);
257
258 return dummy.next;
259 }
260
261 static int fetch_objs_via_rsync(struct transport *transport,
262 int nr_objs, struct ref **to_fetch)
263 {
264 struct strbuf buf = STRBUF_INIT;
265 struct child_process rsync;
266 const char *args[8];
267 int result;
268
269 strbuf_addstr(&buf, rsync_url(transport->url));
270 strbuf_addstr(&buf, "/objects/");
271
272 memset(&rsync, 0, sizeof(rsync));
273 rsync.argv = args;
274 rsync.stdout_to_stderr = 1;
275 args[0] = "rsync";
276 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
277 args[2] = "--ignore-existing";
278 args[3] = "--exclude";
279 args[4] = "info";
280 args[5] = buf.buf;
281 args[6] = get_object_directory();
282 args[7] = NULL;
283
284 /* NEEDSWORK: handle one level of alternates */
285 result = run_command(&rsync);
286
287 strbuf_release(&buf);
288
289 return result;
290 }
291
292 static int write_one_ref(const char *name, const unsigned char *sha1,
293 int flags, void *data)
294 {
295 struct strbuf *buf = data;
296 int len = buf->len;
297 FILE *f;
298
299 /* when called via for_each_ref(), flags is non-zero */
300 if (flags && !starts_with(name, "refs/heads/") &&
301 !starts_with(name, "refs/tags/"))
302 return 0;
303
304 strbuf_addstr(buf, name);
305 if (safe_create_leading_directories(buf->buf) ||
306 !(f = fopen(buf->buf, "w")) ||
307 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
308 fclose(f))
309 return error("problems writing temporary file %s", buf->buf);
310 strbuf_setlen(buf, len);
311 return 0;
312 }
313
314 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
315 int refspec_nr, const char **refspec)
316 {
317 int i;
318
319 for (i = 0; i < refspec_nr; i++) {
320 unsigned char sha1[20];
321 char *ref;
322
323 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
324 return error("Could not get ref %s", refspec[i]);
325
326 if (write_one_ref(ref, sha1, 0, temp_dir)) {
327 free(ref);
328 return -1;
329 }
330 free(ref);
331 }
332 return 0;
333 }
334
335 static int rsync_transport_push(struct transport *transport,
336 int refspec_nr, const char **refspec, int flags)
337 {
338 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
339 int result = 0, i;
340 struct child_process rsync;
341 const char *args[10];
342
343 if (flags & TRANSPORT_PUSH_MIRROR)
344 return error("rsync transport does not support mirror mode");
345
346 /* first push the objects */
347
348 strbuf_addstr(&buf, rsync_url(transport->url));
349 strbuf_addch(&buf, '/');
350
351 memset(&rsync, 0, sizeof(rsync));
352 rsync.argv = args;
353 rsync.stdout_to_stderr = 1;
354 i = 0;
355 args[i++] = "rsync";
356 args[i++] = "-a";
357 if (flags & TRANSPORT_PUSH_DRY_RUN)
358 args[i++] = "--dry-run";
359 if (transport->verbose > 1)
360 args[i++] = "-v";
361 args[i++] = "--ignore-existing";
362 args[i++] = "--exclude";
363 args[i++] = "info";
364 args[i++] = get_object_directory();
365 args[i++] = buf.buf;
366 args[i++] = NULL;
367
368 if (run_command(&rsync))
369 return error("Could not push objects to %s",
370 rsync_url(transport->url));
371
372 /* copy the refs to the temporary directory; they could be packed. */
373
374 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
375 if (!mkdtemp(temp_dir.buf))
376 die_errno ("Could not make temporary directory");
377 strbuf_addch(&temp_dir, '/');
378
379 if (flags & TRANSPORT_PUSH_ALL) {
380 if (for_each_ref(write_one_ref, &temp_dir))
381 return -1;
382 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
383 return -1;
384
385 i = 2;
386 if (flags & TRANSPORT_PUSH_DRY_RUN)
387 args[i++] = "--dry-run";
388 if (!(flags & TRANSPORT_PUSH_FORCE))
389 args[i++] = "--ignore-existing";
390 args[i++] = temp_dir.buf;
391 args[i++] = rsync_url(transport->url);
392 args[i++] = NULL;
393 if (run_command(&rsync))
394 result = error("Could not push to %s",
395 rsync_url(transport->url));
396
397 if (remove_dir_recursively(&temp_dir, 0))
398 warning ("Could not remove temporary directory %s.",
399 temp_dir.buf);
400
401 strbuf_release(&buf);
402 strbuf_release(&temp_dir);
403
404 return result;
405 }
406
407 struct bundle_transport_data {
408 int fd;
409 struct bundle_header header;
410 };
411
412 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
413 {
414 struct bundle_transport_data *data = transport->data;
415 struct ref *result = NULL;
416 int i;
417
418 if (for_push)
419 return NULL;
420
421 if (data->fd > 0)
422 close(data->fd);
423 data->fd = read_bundle_header(transport->url, &data->header);
424 if (data->fd < 0)
425 die ("Could not read bundle '%s'.", transport->url);
426 for (i = 0; i < data->header.references.nr; i++) {
427 struct ref_list_entry *e = data->header.references.list + i;
428 struct ref *ref = alloc_ref(e->name);
429 hashcpy(ref->old_sha1, e->sha1);
430 ref->next = result;
431 result = ref;
432 }
433 return result;
434 }
435
436 static int fetch_refs_from_bundle(struct transport *transport,
437 int nr_heads, struct ref **to_fetch)
438 {
439 struct bundle_transport_data *data = transport->data;
440 return unbundle(&data->header, data->fd,
441 transport->progress ? BUNDLE_VERBOSE : 0);
442 }
443
444 static int close_bundle(struct transport *transport)
445 {
446 struct bundle_transport_data *data = transport->data;
447 if (data->fd > 0)
448 close(data->fd);
449 free(data);
450 return 0;
451 }
452
453 struct git_transport_data {
454 struct git_transport_options options;
455 struct child_process *conn;
456 int fd[2];
457 unsigned got_remote_heads : 1;
458 struct sha1_array extra_have;
459 struct sha1_array shallow;
460 };
461
462 static int set_git_option(struct git_transport_options *opts,
463 const char *name, const char *value)
464 {
465 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
466 opts->uploadpack = value;
467 return 0;
468 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
469 opts->receivepack = value;
470 return 0;
471 } else if (!strcmp(name, TRANS_OPT_THIN)) {
472 opts->thin = !!value;
473 return 0;
474 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
475 opts->followtags = !!value;
476 return 0;
477 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
478 opts->keep = !!value;
479 return 0;
480 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
481 opts->update_shallow = !!value;
482 return 0;
483 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
484 if (!value)
485 opts->depth = 0;
486 else {
487 char *end;
488 opts->depth = strtol(value, &end, 0);
489 if (*end)
490 die("transport: invalid depth option '%s'", value);
491 }
492 return 0;
493 }
494 return 1;
495 }
496
497 static int connect_setup(struct transport *transport, int for_push, int verbose)
498 {
499 struct git_transport_data *data = transport->data;
500
501 if (data->conn)
502 return 0;
503
504 data->conn = git_connect(data->fd, transport->url,
505 for_push ? data->options.receivepack :
506 data->options.uploadpack,
507 verbose ? CONNECT_VERBOSE : 0);
508
509 return 0;
510 }
511
512 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
513 {
514 struct git_transport_data *data = transport->data;
515 struct ref *refs;
516
517 connect_setup(transport, for_push, 0);
518 get_remote_heads(data->fd[0], NULL, 0, &refs,
519 for_push ? REF_NORMAL : 0,
520 &data->extra_have,
521 &data->shallow);
522 data->got_remote_heads = 1;
523
524 return refs;
525 }
526
527 static int fetch_refs_via_pack(struct transport *transport,
528 int nr_heads, struct ref **to_fetch)
529 {
530 struct git_transport_data *data = transport->data;
531 const struct ref *refs;
532 char *dest = xstrdup(transport->url);
533 struct fetch_pack_args args;
534 struct ref *refs_tmp = NULL;
535
536 memset(&args, 0, sizeof(args));
537 args.uploadpack = data->options.uploadpack;
538 args.keep_pack = data->options.keep;
539 args.lock_pack = 1;
540 args.use_thin_pack = data->options.thin;
541 args.include_tag = data->options.followtags;
542 args.verbose = (transport->verbose > 1);
543 args.quiet = (transport->verbose < 0);
544 args.no_progress = !transport->progress;
545 args.depth = data->options.depth;
546 args.check_self_contained_and_connected =
547 data->options.check_self_contained_and_connected;
548 args.cloning = transport->cloning;
549 args.update_shallow = data->options.update_shallow;
550
551 if (!data->got_remote_heads) {
552 connect_setup(transport, 0, 0);
553 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
554 NULL, &data->shallow);
555 data->got_remote_heads = 1;
556 }
557
558 refs = fetch_pack(&args, data->fd, data->conn,
559 refs_tmp ? refs_tmp : transport->remote_refs,
560 dest, to_fetch, nr_heads, &data->shallow,
561 &transport->pack_lockfile);
562 close(data->fd[0]);
563 close(data->fd[1]);
564 if (finish_connect(data->conn))
565 refs = NULL;
566 data->conn = NULL;
567 data->got_remote_heads = 0;
568 data->options.self_contained_and_connected =
569 args.self_contained_and_connected;
570
571 free_refs(refs_tmp);
572
573 free(dest);
574 return (refs ? 0 : -1);
575 }
576
577 static int push_had_errors(struct ref *ref)
578 {
579 for (; ref; ref = ref->next) {
580 switch (ref->status) {
581 case REF_STATUS_NONE:
582 case REF_STATUS_UPTODATE:
583 case REF_STATUS_OK:
584 break;
585 default:
586 return 1;
587 }
588 }
589 return 0;
590 }
591
592 int transport_refs_pushed(struct ref *ref)
593 {
594 for (; ref; ref = ref->next) {
595 switch(ref->status) {
596 case REF_STATUS_NONE:
597 case REF_STATUS_UPTODATE:
598 break;
599 default:
600 return 1;
601 }
602 }
603 return 0;
604 }
605
606 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
607 {
608 struct refspec rs;
609
610 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
611 return;
612
613 rs.src = ref->name;
614 rs.dst = NULL;
615
616 if (!remote_find_tracking(remote, &rs)) {
617 if (verbose)
618 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
619 if (ref->deletion) {
620 delete_ref(rs.dst, NULL, 0);
621 } else
622 update_ref("update by push", rs.dst,
623 ref->new_sha1, NULL, 0, 0);
624 free(rs.dst);
625 }
626 }
627
628 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
629 {
630 if (porcelain) {
631 if (from)
632 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
633 else
634 fprintf(stdout, "%c\t:%s\t", flag, to->name);
635 if (msg)
636 fprintf(stdout, "%s (%s)\n", summary, msg);
637 else
638 fprintf(stdout, "%s\n", summary);
639 } else {
640 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
641 if (from)
642 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
643 else
644 fputs(prettify_refname(to->name), stderr);
645 if (msg) {
646 fputs(" (", stderr);
647 fputs(msg, stderr);
648 fputc(')', stderr);
649 }
650 fputc('\n', stderr);
651 }
652 }
653
654 static const char *status_abbrev(unsigned char sha1[20])
655 {
656 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
657 }
658
659 static void print_ok_ref_status(struct ref *ref, int porcelain)
660 {
661 if (ref->deletion)
662 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
663 else if (is_null_sha1(ref->old_sha1))
664 print_ref_status('*',
665 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
666 "[new branch]"),
667 ref, ref->peer_ref, NULL, porcelain);
668 else {
669 char quickref[84];
670 char type;
671 const char *msg;
672
673 strcpy(quickref, status_abbrev(ref->old_sha1));
674 if (ref->forced_update) {
675 strcat(quickref, "...");
676 type = '+';
677 msg = "forced update";
678 } else {
679 strcat(quickref, "..");
680 type = ' ';
681 msg = NULL;
682 }
683 strcat(quickref, status_abbrev(ref->new_sha1));
684
685 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
686 }
687 }
688
689 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
690 {
691 if (!count)
692 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
693
694 switch(ref->status) {
695 case REF_STATUS_NONE:
696 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
697 break;
698 case REF_STATUS_REJECT_NODELETE:
699 print_ref_status('!', "[rejected]", ref, NULL,
700 "remote does not support deleting refs", porcelain);
701 break;
702 case REF_STATUS_UPTODATE:
703 print_ref_status('=', "[up to date]", ref,
704 ref->peer_ref, NULL, porcelain);
705 break;
706 case REF_STATUS_REJECT_NONFASTFORWARD:
707 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
708 "non-fast-forward", porcelain);
709 break;
710 case REF_STATUS_REJECT_ALREADY_EXISTS:
711 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
712 "already exists", porcelain);
713 break;
714 case REF_STATUS_REJECT_FETCH_FIRST:
715 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
716 "fetch first", porcelain);
717 break;
718 case REF_STATUS_REJECT_NEEDS_FORCE:
719 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
720 "needs force", porcelain);
721 break;
722 case REF_STATUS_REJECT_STALE:
723 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
724 "stale info", porcelain);
725 break;
726 case REF_STATUS_REJECT_SHALLOW:
727 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
728 "new shallow roots not allowed", porcelain);
729 break;
730 case REF_STATUS_REMOTE_REJECT:
731 print_ref_status('!', "[remote rejected]", ref,
732 ref->deletion ? NULL : ref->peer_ref,
733 ref->remote_status, porcelain);
734 break;
735 case REF_STATUS_EXPECTING_REPORT:
736 print_ref_status('!', "[remote failure]", ref,
737 ref->deletion ? NULL : ref->peer_ref,
738 "remote failed to report status", porcelain);
739 break;
740 case REF_STATUS_OK:
741 print_ok_ref_status(ref, porcelain);
742 break;
743 }
744
745 return 1;
746 }
747
748 void transport_print_push_status(const char *dest, struct ref *refs,
749 int verbose, int porcelain, unsigned int *reject_reasons)
750 {
751 struct ref *ref;
752 int n = 0;
753 unsigned char head_sha1[20];
754 char *head;
755
756 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
757
758 if (verbose) {
759 for (ref = refs; ref; ref = ref->next)
760 if (ref->status == REF_STATUS_UPTODATE)
761 n += print_one_push_status(ref, dest, n, porcelain);
762 }
763
764 for (ref = refs; ref; ref = ref->next)
765 if (ref->status == REF_STATUS_OK)
766 n += print_one_push_status(ref, dest, n, porcelain);
767
768 *reject_reasons = 0;
769 for (ref = refs; ref; ref = ref->next) {
770 if (ref->status != REF_STATUS_NONE &&
771 ref->status != REF_STATUS_UPTODATE &&
772 ref->status != REF_STATUS_OK)
773 n += print_one_push_status(ref, dest, n, porcelain);
774 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
775 if (head != NULL && !strcmp(head, ref->name))
776 *reject_reasons |= REJECT_NON_FF_HEAD;
777 else
778 *reject_reasons |= REJECT_NON_FF_OTHER;
779 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
780 *reject_reasons |= REJECT_ALREADY_EXISTS;
781 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
782 *reject_reasons |= REJECT_FETCH_FIRST;
783 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
784 *reject_reasons |= REJECT_NEEDS_FORCE;
785 }
786 }
787 }
788
789 void transport_verify_remote_names(int nr_heads, const char **heads)
790 {
791 int i;
792
793 for (i = 0; i < nr_heads; i++) {
794 const char *local = heads[i];
795 const char *remote = strrchr(heads[i], ':');
796
797 if (*local == '+')
798 local++;
799
800 /* A matching refspec is okay. */
801 if (remote == local && remote[1] == '\0')
802 continue;
803
804 remote = remote ? (remote + 1) : local;
805 if (check_refname_format(remote,
806 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
807 die("remote part of refspec is not a valid name in %s",
808 heads[i]);
809 }
810 }
811
812 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
813 {
814 struct git_transport_data *data = transport->data;
815 struct send_pack_args args;
816 int ret;
817
818 if (!data->got_remote_heads) {
819 struct ref *tmp_refs;
820 connect_setup(transport, 1, 0);
821
822 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
823 NULL, &data->shallow);
824 data->got_remote_heads = 1;
825 }
826
827 memset(&args, 0, sizeof(args));
828 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
829 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
830 args.use_thin_pack = data->options.thin;
831 args.verbose = (transport->verbose > 0);
832 args.quiet = (transport->verbose < 0);
833 args.progress = transport->progress;
834 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
835 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
836
837 ret = send_pack(&args, data->fd, data->conn, remote_refs,
838 &data->extra_have);
839
840 close(data->fd[1]);
841 close(data->fd[0]);
842 ret |= finish_connect(data->conn);
843 data->conn = NULL;
844 data->got_remote_heads = 0;
845
846 return ret;
847 }
848
849 static int connect_git(struct transport *transport, const char *name,
850 const char *executable, int fd[2])
851 {
852 struct git_transport_data *data = transport->data;
853 data->conn = git_connect(data->fd, transport->url,
854 executable, 0);
855 fd[0] = data->fd[0];
856 fd[1] = data->fd[1];
857 return 0;
858 }
859
860 static int disconnect_git(struct transport *transport)
861 {
862 struct git_transport_data *data = transport->data;
863 if (data->conn) {
864 if (data->got_remote_heads)
865 packet_flush(data->fd[1]);
866 close(data->fd[0]);
867 close(data->fd[1]);
868 finish_connect(data->conn);
869 }
870
871 free(data);
872 return 0;
873 }
874
875 void transport_take_over(struct transport *transport,
876 struct child_process *child)
877 {
878 struct git_transport_data *data;
879
880 if (!transport->smart_options)
881 die("Bug detected: Taking over transport requires non-NULL "
882 "smart_options field.");
883
884 data = xcalloc(1, sizeof(*data));
885 data->options = *transport->smart_options;
886 data->conn = child;
887 data->fd[0] = data->conn->out;
888 data->fd[1] = data->conn->in;
889 data->got_remote_heads = 0;
890 transport->data = data;
891
892 transport->set_option = NULL;
893 transport->get_refs_list = get_refs_via_connect;
894 transport->fetch = fetch_refs_via_pack;
895 transport->push = NULL;
896 transport->push_refs = git_transport_push;
897 transport->disconnect = disconnect_git;
898 transport->smart_options = &(data->options);
899
900 transport->cannot_reuse = 1;
901 }
902
903 static int is_file(const char *url)
904 {
905 struct stat buf;
906 if (stat(url, &buf))
907 return 0;
908 return S_ISREG(buf.st_mode);
909 }
910
911 static int external_specification_len(const char *url)
912 {
913 return strchr(url, ':') - url;
914 }
915
916 struct transport *transport_get(struct remote *remote, const char *url)
917 {
918 const char *helper;
919 struct transport *ret = xcalloc(1, sizeof(*ret));
920
921 ret->progress = isatty(2);
922
923 if (!remote)
924 die("No remote provided to transport_get()");
925
926 ret->got_remote_refs = 0;
927 ret->remote = remote;
928 helper = remote->foreign_vcs;
929
930 if (!url && remote->url)
931 url = remote->url[0];
932 ret->url = url;
933
934 /* maybe it is a foreign URL? */
935 if (url) {
936 const char *p = url;
937
938 while (is_urlschemechar(p == url, *p))
939 p++;
940 if (starts_with(p, "::"))
941 helper = xstrndup(url, p - url);
942 }
943
944 if (helper) {
945 transport_helper_init(ret, helper);
946 } else if (starts_with(url, "rsync:")) {
947 ret->get_refs_list = get_refs_via_rsync;
948 ret->fetch = fetch_objs_via_rsync;
949 ret->push = rsync_transport_push;
950 ret->smart_options = NULL;
951 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
952 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
953 ret->data = data;
954 ret->get_refs_list = get_refs_from_bundle;
955 ret->fetch = fetch_refs_from_bundle;
956 ret->disconnect = close_bundle;
957 ret->smart_options = NULL;
958 } else if (!is_url(url)
959 || starts_with(url, "file://")
960 || starts_with(url, "git://")
961 || starts_with(url, "ssh://")
962 || starts_with(url, "git+ssh://")
963 || starts_with(url, "ssh+git://")) {
964 /* These are builtin smart transports. */
965 struct git_transport_data *data = xcalloc(1, sizeof(*data));
966 ret->data = data;
967 ret->set_option = NULL;
968 ret->get_refs_list = get_refs_via_connect;
969 ret->fetch = fetch_refs_via_pack;
970 ret->push_refs = git_transport_push;
971 ret->connect = connect_git;
972 ret->disconnect = disconnect_git;
973 ret->smart_options = &(data->options);
974
975 data->conn = NULL;
976 data->got_remote_heads = 0;
977 } else {
978 /* Unknown protocol in URL. Pass to external handler. */
979 int len = external_specification_len(url);
980 char *handler = xmalloc(len + 1);
981 handler[len] = 0;
982 strncpy(handler, url, len);
983 transport_helper_init(ret, handler);
984 }
985
986 if (ret->smart_options) {
987 ret->smart_options->thin = 1;
988 ret->smart_options->uploadpack = "git-upload-pack";
989 if (remote->uploadpack)
990 ret->smart_options->uploadpack = remote->uploadpack;
991 ret->smart_options->receivepack = "git-receive-pack";
992 if (remote->receivepack)
993 ret->smart_options->receivepack = remote->receivepack;
994 }
995
996 return ret;
997 }
998
999 int transport_set_option(struct transport *transport,
1000 const char *name, const char *value)
1001 {
1002 int git_reports = 1, protocol_reports = 1;
1003
1004 if (transport->smart_options)
1005 git_reports = set_git_option(transport->smart_options,
1006 name, value);
1007
1008 if (transport->set_option)
1009 protocol_reports = transport->set_option(transport, name,
1010 value);
1011
1012 /* If either report is 0, report 0 (success). */
1013 if (!git_reports || !protocol_reports)
1014 return 0;
1015 /* If either reports -1 (invalid value), report -1. */
1016 if ((git_reports == -1) || (protocol_reports == -1))
1017 return -1;
1018 /* Otherwise if both report unknown, report unknown. */
1019 return 1;
1020 }
1021
1022 void transport_set_verbosity(struct transport *transport, int verbosity,
1023 int force_progress)
1024 {
1025 if (verbosity >= 1)
1026 transport->verbose = verbosity <= 3 ? verbosity : 3;
1027 if (verbosity < 0)
1028 transport->verbose = -1;
1029
1030 /**
1031 * Rules used to determine whether to report progress (processing aborts
1032 * when a rule is satisfied):
1033 *
1034 * . Report progress, if force_progress is 1 (ie. --progress).
1035 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1036 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1037 * . Report progress if isatty(2) is 1.
1038 **/
1039 if (force_progress >= 0)
1040 transport->progress = !!force_progress;
1041 else
1042 transport->progress = verbosity >= 0 && isatty(2);
1043 }
1044
1045 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1046 {
1047 int i;
1048
1049 fprintf(stderr, "The following submodule paths contain changes that can\n"
1050 "not be found on any remote:\n");
1051 for (i = 0; i < needs_pushing->nr; i++)
1052 printf(" %s\n", needs_pushing->items[i].string);
1053 fprintf(stderr, "\nPlease try\n\n"
1054 " git push --recurse-submodules=on-demand\n\n"
1055 "or cd to the path and use\n\n"
1056 " git push\n\n"
1057 "to push them to a remote.\n\n");
1058
1059 string_list_clear(needs_pushing, 0);
1060
1061 die("Aborting.");
1062 }
1063
1064 static int run_pre_push_hook(struct transport *transport,
1065 struct ref *remote_refs)
1066 {
1067 int ret = 0, x;
1068 struct ref *r;
1069 struct child_process proc;
1070 struct strbuf buf;
1071 const char *argv[4];
1072
1073 if (!(argv[0] = find_hook("pre-push")))
1074 return 0;
1075
1076 argv[1] = transport->remote->name;
1077 argv[2] = transport->url;
1078 argv[3] = NULL;
1079
1080 memset(&proc, 0, sizeof(proc));
1081 proc.argv = argv;
1082 proc.in = -1;
1083
1084 if (start_command(&proc)) {
1085 finish_command(&proc);
1086 return -1;
1087 }
1088
1089 strbuf_init(&buf, 256);
1090
1091 for (r = remote_refs; r; r = r->next) {
1092 if (!r->peer_ref) continue;
1093 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1094 if (r->status == REF_STATUS_REJECT_STALE) continue;
1095 if (r->status == REF_STATUS_UPTODATE) continue;
1096
1097 strbuf_reset(&buf);
1098 strbuf_addf( &buf, "%s %s %s %s\n",
1099 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1100 r->name, sha1_to_hex(r->old_sha1));
1101
1102 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1103 ret = -1;
1104 break;
1105 }
1106 }
1107
1108 strbuf_release(&buf);
1109
1110 x = close(proc.in);
1111 if (!ret)
1112 ret = x;
1113
1114 x = finish_command(&proc);
1115 if (!ret)
1116 ret = x;
1117
1118 return ret;
1119 }
1120
1121 int transport_push(struct transport *transport,
1122 int refspec_nr, const char **refspec, int flags,
1123 unsigned int *reject_reasons)
1124 {
1125 *reject_reasons = 0;
1126 transport_verify_remote_names(refspec_nr, refspec);
1127
1128 if (transport->push) {
1129 /* Maybe FIXME. But no important transport uses this case. */
1130 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1131 die("This transport does not support using --set-upstream");
1132
1133 return transport->push(transport, refspec_nr, refspec, flags);
1134 } else if (transport->push_refs) {
1135 struct ref *remote_refs;
1136 struct ref *local_refs = get_local_heads();
1137 int match_flags = MATCH_REFS_NONE;
1138 int verbose = (transport->verbose > 0);
1139 int quiet = (transport->verbose < 0);
1140 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1141 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1142 int push_ret, ret, err;
1143
1144 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1145 return -1;
1146
1147 remote_refs = transport->get_refs_list(transport, 1);
1148
1149 if (flags & TRANSPORT_PUSH_ALL)
1150 match_flags |= MATCH_REFS_ALL;
1151 if (flags & TRANSPORT_PUSH_MIRROR)
1152 match_flags |= MATCH_REFS_MIRROR;
1153 if (flags & TRANSPORT_PUSH_PRUNE)
1154 match_flags |= MATCH_REFS_PRUNE;
1155 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1156 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1157
1158 if (match_push_refs(local_refs, &remote_refs,
1159 refspec_nr, refspec, match_flags)) {
1160 return -1;
1161 }
1162
1163 if (transport->smart_options &&
1164 transport->smart_options->cas &&
1165 !is_empty_cas(transport->smart_options->cas))
1166 apply_push_cas(transport->smart_options->cas,
1167 transport->remote, remote_refs);
1168
1169 set_ref_status_for_push(remote_refs,
1170 flags & TRANSPORT_PUSH_MIRROR,
1171 flags & TRANSPORT_PUSH_FORCE);
1172
1173 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1174 if (run_pre_push_hook(transport, remote_refs))
1175 return -1;
1176
1177 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1178 struct ref *ref = remote_refs;
1179 for (; ref; ref = ref->next)
1180 if (!is_null_sha1(ref->new_sha1) &&
1181 !push_unpushed_submodules(ref->new_sha1,
1182 transport->remote->name))
1183 die ("Failed to push all needed submodules!");
1184 }
1185
1186 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1187 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1188 struct ref *ref = remote_refs;
1189 struct string_list needs_pushing;
1190
1191 memset(&needs_pushing, 0, sizeof(struct string_list));
1192 needs_pushing.strdup_strings = 1;
1193 for (; ref; ref = ref->next)
1194 if (!is_null_sha1(ref->new_sha1) &&
1195 find_unpushed_submodules(ref->new_sha1,
1196 transport->remote->name, &needs_pushing))
1197 die_with_unpushed_submodules(&needs_pushing);
1198 }
1199
1200 push_ret = transport->push_refs(transport, remote_refs, flags);
1201 err = push_had_errors(remote_refs);
1202 ret = push_ret | err;
1203
1204 if (!quiet || err)
1205 transport_print_push_status(transport->url, remote_refs,
1206 verbose | porcelain, porcelain,
1207 reject_reasons);
1208
1209 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1210 set_upstreams(transport, remote_refs, pretend);
1211
1212 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1213 struct ref *ref;
1214 for (ref = remote_refs; ref; ref = ref->next)
1215 transport_update_tracking_ref(transport->remote, ref, verbose);
1216 }
1217
1218 if (porcelain && !push_ret)
1219 puts("Done");
1220 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1221 fprintf(stderr, "Everything up-to-date\n");
1222
1223 return ret;
1224 }
1225 return 1;
1226 }
1227
1228 const struct ref *transport_get_remote_refs(struct transport *transport)
1229 {
1230 if (!transport->got_remote_refs) {
1231 transport->remote_refs = transport->get_refs_list(transport, 0);
1232 transport->got_remote_refs = 1;
1233 }
1234
1235 return transport->remote_refs;
1236 }
1237
1238 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1239 {
1240 int rc;
1241 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1242 struct ref **heads = NULL;
1243 struct ref *rm;
1244
1245 for (rm = refs; rm; rm = rm->next) {
1246 nr_refs++;
1247 if (rm->peer_ref &&
1248 !is_null_sha1(rm->old_sha1) &&
1249 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1250 continue;
1251 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1252 heads[nr_heads++] = rm;
1253 }
1254
1255 if (!nr_heads) {
1256 /*
1257 * When deepening of a shallow repository is requested,
1258 * then local and remote refs are likely to still be equal.
1259 * Just feed them all to the fetch method in that case.
1260 * This condition shouldn't be met in a non-deepening fetch
1261 * (see builtin/fetch.c:quickfetch()).
1262 */
1263 heads = xmalloc(nr_refs * sizeof(*heads));
1264 for (rm = refs; rm; rm = rm->next)
1265 heads[nr_heads++] = rm;
1266 }
1267
1268 rc = transport->fetch(transport, nr_heads, heads);
1269
1270 free(heads);
1271 return rc;
1272 }
1273
1274 void transport_unlock_pack(struct transport *transport)
1275 {
1276 if (transport->pack_lockfile) {
1277 unlink_or_warn(transport->pack_lockfile);
1278 free(transport->pack_lockfile);
1279 transport->pack_lockfile = NULL;
1280 }
1281 }
1282
1283 int transport_connect(struct transport *transport, const char *name,
1284 const char *exec, int fd[2])
1285 {
1286 if (transport->connect)
1287 return transport->connect(transport, name, exec, fd);
1288 else
1289 die("Operation not supported by protocol");
1290 }
1291
1292 int transport_disconnect(struct transport *transport)
1293 {
1294 int ret = 0;
1295 if (transport->disconnect)
1296 ret = transport->disconnect(transport);
1297 free(transport);
1298 return ret;
1299 }
1300
1301 /*
1302 * Strip username (and password) from a URL and return
1303 * it in a newly allocated string.
1304 */
1305 char *transport_anonymize_url(const char *url)
1306 {
1307 char *anon_url, *scheme_prefix, *anon_part;
1308 size_t anon_len, prefix_len = 0;
1309
1310 anon_part = strchr(url, '@');
1311 if (url_is_local_not_ssh(url) || !anon_part)
1312 goto literal_copy;
1313
1314 anon_len = strlen(++anon_part);
1315 scheme_prefix = strstr(url, "://");
1316 if (!scheme_prefix) {
1317 if (!strchr(anon_part, ':'))
1318 /* cannot be "me@there:/path/name" */
1319 goto literal_copy;
1320 } else {
1321 const char *cp;
1322 /* make sure scheme is reasonable */
1323 for (cp = url; cp < scheme_prefix; cp++) {
1324 switch (*cp) {
1325 /* RFC 1738 2.1 */
1326 case '+': case '.': case '-':
1327 break; /* ok */
1328 default:
1329 if (isalnum(*cp))
1330 break;
1331 /* it isn't */
1332 goto literal_copy;
1333 }
1334 }
1335 /* @ past the first slash does not count */
1336 cp = strchr(scheme_prefix + 3, '/');
1337 if (cp && cp < anon_part)
1338 goto literal_copy;
1339 prefix_len = scheme_prefix - url + 3;
1340 }
1341 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1342 memcpy(anon_url, url, prefix_len);
1343 memcpy(anon_url + prefix_len, anon_part, anon_len);
1344 return anon_url;
1345 literal_copy:
1346 return xstrdup(url);
1347 }
1348
1349 struct alternate_refs_data {
1350 alternate_ref_fn *fn;
1351 void *data;
1352 };
1353
1354 static int refs_from_alternate_cb(struct alternate_object_database *e,
1355 void *data)
1356 {
1357 char *other;
1358 size_t len;
1359 struct remote *remote;
1360 struct transport *transport;
1361 const struct ref *extra;
1362 struct alternate_refs_data *cb = data;
1363
1364 e->name[-1] = '\0';
1365 other = xstrdup(real_path(e->base));
1366 e->name[-1] = '/';
1367 len = strlen(other);
1368
1369 while (other[len-1] == '/')
1370 other[--len] = '\0';
1371 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1372 return 0;
1373 /* Is this a git repository with refs? */
1374 memcpy(other + len - 8, "/refs", 6);
1375 if (!is_directory(other))
1376 return 0;
1377 other[len - 8] = '\0';
1378 remote = remote_get(other);
1379 transport = transport_get(remote, other);
1380 for (extra = transport_get_remote_refs(transport);
1381 extra;
1382 extra = extra->next)
1383 cb->fn(extra, cb->data);
1384 transport_disconnect(transport);
1385 free(other);
1386 return 0;
1387 }
1388
1389 void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1390 {
1391 struct alternate_refs_data cb;
1392 cb.fn = fn;
1393 cb.data = data;
1394 foreach_alt_odb(refs_from_alternate_cb, &cb);
1395 }
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