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/* rsync support */
20/*
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 */
29static int str_cmp(const void *a, const void *b)
31{
32 const char *s1 = a;
33 const char *s2 = b;
34 return strcmp(s1, s2);
36}
37/* path->buf + name_offset is expected to point to "refs/" */
39static 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 if (!dir)
52 return -1;
53 memset (&list, 0, sizeof(list));
55 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 /* sort the list */
65 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
67 pathlen = path->len;
69 strbuf_addch(path, '/');
70 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 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 for (i = 0; i < list.nr; i++)
95 free(list.entries[i]);
96 free(list.entries);
97 return 0;
99}
100/* insert the packed refs for which no loose refs were found */
102static 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 if (!f)
109 return;
110 for (;;) {
112 int cmp = 0; /* assigned before used */
113 int len;
114 if (!fgets(buffer, sizeof(buffer), f)) {
116 fclose(f);
117 return;
118 }
119 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}
145static 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 /* 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 /* 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 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}
192static const char *rsync_url(const char *url)
194{
195 if (!starts_with(url, "rsync://"))
196 skip_prefix(url, "rsync:", &url);
197 return url;
198}
199static 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 if (for_push)
209 return NULL;
210 /* copy the refs to the temporary directory */
212 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 strbuf_addstr(&buf, rsync_url(transport->url));
219 strbuf_addstr(&buf, "/refs");
220 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 if (run_command(&rsync))
231 die ("Could not run rsync to get refs");
232 strbuf_reset(&buf);
234 strbuf_addstr(&buf, rsync_url(transport->url));
235 strbuf_addstr(&buf, "/packed-refs");
236 args[2] = buf.buf;
238 if (run_command(&rsync))
240 die ("Could not run rsync to get refs");
241 /* read the copied refs */
243 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 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 if (remove_dir_recursively(&temp_dir, 0))
254 warning ("Error removing temporary directory %s.",
255 temp_dir.buf);
256 strbuf_release(&buf);
258 strbuf_release(&temp_dir);
259 return dummy.next;
261}
262static int fetch_objs_via_rsync(struct transport *transport,
264 int nr_objs, struct ref **to_fetch)
265{
266 struct child_process rsync;
267 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 /* NEEDSWORK: handle one level of alternates */
279 return run_command(&rsync);
280}
281static 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 /* 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 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}
303static int write_refs_to_temp_dir(struct strbuf *temp_dir,
305 int refspec_nr, const char **refspec)
306{
307 int i;
308 for (i = 0; i < refspec_nr; i++) {
310 unsigned char sha1[20];
311 char *ref;
312 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
314 return error("Could not get ref %s", refspec[i]);
315 if (write_one_ref(ref, sha1, 0, temp_dir)) {
317 free(ref);
318 return -1;
319 }
320 free(ref);
321 }
322 return 0;
323}
324static 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 if (flags & TRANSPORT_PUSH_MIRROR)
334 return error("rsync transport does not support mirror mode");
335 /* first push the objects */
337 strbuf_addstr(&buf, rsync_url(transport->url));
339 strbuf_addch(&buf, '/');
340 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 if (run_command(&rsync))
359 return error("Could not push objects to %s",
360 rsync_url(transport->url));
361 /* copy the refs to the temporary directory; they could be packed. */
363 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 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 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 if (remove_dir_recursively(&temp_dir, 0))
388 warning ("Could not remove temporary directory %s.",
389 temp_dir.buf);
390 strbuf_release(&buf);
392 strbuf_release(&temp_dir);
393 return result;
395}
396struct bundle_transport_data {
398 int fd;
399 struct bundle_header header;
400};
401static 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 if (for_push)
409 return NULL;
410 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}
425static 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}
433static 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}
442struct 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};
451static 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 } else if (!strcmp(name, TRANS_OPT_PUSH_CERT)) {
484 opts->push_cert = !!value;
485 return 0;
486 }
487 return 1;
488}
489static int connect_setup(struct transport *transport, int for_push, int verbose)
491{
492 struct git_transport_data *data = transport->data;
493 if (data->conn)
495 return 0;
496 data->conn = git_connect(data->fd, transport->url,
498 for_push ? data->options.receivepack :
499 data->options.uploadpack,
500 verbose ? CONNECT_VERBOSE : 0);
501 return 0;
503}
504static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
506{
507 struct git_transport_data *data = transport->data;
508 struct ref *refs;
509 connect_setup(transport, for_push, 0);
511 get_remote_heads(data->fd[0], NULL, 0, &refs,
512 for_push ? REF_NORMAL : 0,
513 &data->extra_have,
514 &data->shallow);
515 data->got_remote_heads = 1;
516 return refs;
518}
519static int fetch_refs_via_pack(struct transport *transport,
521 int nr_heads, struct ref **to_fetch)
522{
523 struct git_transport_data *data = transport->data;
524 const struct ref *refs;
525 char *dest = xstrdup(transport->url);
526 struct fetch_pack_args args;
527 struct ref *refs_tmp = NULL;
528 memset(&args, 0, sizeof(args));
530 args.uploadpack = data->options.uploadpack;
531 args.keep_pack = data->options.keep;
532 args.lock_pack = 1;
533 args.use_thin_pack = data->options.thin;
534 args.include_tag = data->options.followtags;
535 args.verbose = (transport->verbose > 1);
536 args.quiet = (transport->verbose < 0);
537 args.no_progress = !transport->progress;
538 args.depth = data->options.depth;
539 args.check_self_contained_and_connected =
540 data->options.check_self_contained_and_connected;
541 args.cloning = transport->cloning;
542 args.update_shallow = data->options.update_shallow;
543 if (!data->got_remote_heads) {
545 connect_setup(transport, 0, 0);
546 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
547 NULL, &data->shallow);
548 data->got_remote_heads = 1;
549 }
550 refs = fetch_pack(&args, data->fd, data->conn,
552 refs_tmp ? refs_tmp : transport->remote_refs,
553 dest, to_fetch, nr_heads, &data->shallow,
554 &transport->pack_lockfile);
555 close(data->fd[0]);
556 close(data->fd[1]);
557 if (finish_connect(data->conn))
558 refs = NULL;
559 data->conn = NULL;
560 data->got_remote_heads = 0;
561 data->options.self_contained_and_connected =
562 args.self_contained_and_connected;
563 free_refs(refs_tmp);
565 free(dest);
567 return (refs ? 0 : -1);
568}
569static int push_had_errors(struct ref *ref)
571{
572 for (; ref; ref = ref->next) {
573 switch (ref->status) {
574 case REF_STATUS_NONE:
575 case REF_STATUS_UPTODATE:
576 case REF_STATUS_OK:
577 break;
578 default:
579 return 1;
580 }
581 }
582 return 0;
583}
584int transport_refs_pushed(struct ref *ref)
586{
587 for (; ref; ref = ref->next) {
588 switch(ref->status) {
589 case REF_STATUS_NONE:
590 case REF_STATUS_UPTODATE:
591 break;
592 default:
593 return 1;
594 }
595 }
596 return 0;
597}
598void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
600{
601 struct refspec rs;
602 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
604 return;
605 rs.src = ref->name;
607 rs.dst = NULL;
608 if (!remote_find_tracking(remote, &rs)) {
610 if (verbose)
611 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
612 if (ref->deletion) {
613 delete_ref(rs.dst, NULL, 0);
614 } else
615 update_ref("update by push", rs.dst,
616 ref->new_sha1, NULL, 0, 0);
617 free(rs.dst);
618 }
619}
620static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
622{
623 if (porcelain) {
624 if (from)
625 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
626 else
627 fprintf(stdout, "%c\t:%s\t", flag, to->name);
628 if (msg)
629 fprintf(stdout, "%s (%s)\n", summary, msg);
630 else
631 fprintf(stdout, "%s\n", summary);
632 } else {
633 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
634 if (from)
635 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
636 else
637 fputs(prettify_refname(to->name), stderr);
638 if (msg) {
639 fputs(" (", stderr);
640 fputs(msg, stderr);
641 fputc(')', stderr);
642 }
643 fputc('\n', stderr);
644 }
645}
646static const char *status_abbrev(unsigned char sha1[20])
648{
649 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
650}
651static void print_ok_ref_status(struct ref *ref, int porcelain)
653{
654 if (ref->deletion)
655 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
656 else if (is_null_sha1(ref->old_sha1))
657 print_ref_status('*',
658 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
659 "[new branch]"),
660 ref, ref->peer_ref, NULL, porcelain);
661 else {
662 char quickref[84];
663 char type;
664 const char *msg;
665 strcpy(quickref, status_abbrev(ref->old_sha1));
667 if (ref->forced_update) {
668 strcat(quickref, "...");
669 type = '+';
670 msg = "forced update";
671 } else {
672 strcat(quickref, "..");
673 type = ' ';
674 msg = NULL;
675 }
676 strcat(quickref, status_abbrev(ref->new_sha1));
677 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
679 }
680}
681static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
683{
684 if (!count)
685 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
686 switch(ref->status) {
688 case REF_STATUS_NONE:
689 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
690 break;
691 case REF_STATUS_REJECT_NODELETE:
692 print_ref_status('!', "[rejected]", ref, NULL,
693 "remote does not support deleting refs", porcelain);
694 break;
695 case REF_STATUS_UPTODATE:
696 print_ref_status('=', "[up to date]", ref,
697 ref->peer_ref, NULL, porcelain);
698 break;
699 case REF_STATUS_REJECT_NONFASTFORWARD:
700 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
701 "non-fast-forward", porcelain);
702 break;
703 case REF_STATUS_REJECT_ALREADY_EXISTS:
704 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
705 "already exists", porcelain);
706 break;
707 case REF_STATUS_REJECT_FETCH_FIRST:
708 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
709 "fetch first", porcelain);
710 break;
711 case REF_STATUS_REJECT_NEEDS_FORCE:
712 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
713 "needs force", porcelain);
714 break;
715 case REF_STATUS_REJECT_STALE:
716 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
717 "stale info", porcelain);
718 break;
719 case REF_STATUS_REJECT_SHALLOW:
720 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
721 "new shallow roots not allowed", porcelain);
722 break;
723 case REF_STATUS_REMOTE_REJECT:
724 print_ref_status('!', "[remote rejected]", ref,
725 ref->deletion ? NULL : ref->peer_ref,
726 ref->remote_status, porcelain);
727 break;
728 case REF_STATUS_EXPECTING_REPORT:
729 print_ref_status('!', "[remote failure]", ref,
730 ref->deletion ? NULL : ref->peer_ref,
731 "remote failed to report status", porcelain);
732 break;
733 case REF_STATUS_OK:
734 print_ok_ref_status(ref, porcelain);
735 break;
736 }
737 return 1;
739}
740void transport_print_push_status(const char *dest, struct ref *refs,
742 int verbose, int porcelain, unsigned int *reject_reasons)
743{
744 struct ref *ref;
745 int n = 0;
746 unsigned char head_sha1[20];
747 char *head;
748 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
750 if (verbose) {
752 for (ref = refs; ref; ref = ref->next)
753 if (ref->status == REF_STATUS_UPTODATE)
754 n += print_one_push_status(ref, dest, n, porcelain);
755 }
756 for (ref = refs; ref; ref = ref->next)
758 if (ref->status == REF_STATUS_OK)
759 n += print_one_push_status(ref, dest, n, porcelain);
760 *reject_reasons = 0;
762 for (ref = refs; ref; ref = ref->next) {
763 if (ref->status != REF_STATUS_NONE &&
764 ref->status != REF_STATUS_UPTODATE &&
765 ref->status != REF_STATUS_OK)
766 n += print_one_push_status(ref, dest, n, porcelain);
767 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
768 if (head != NULL && !strcmp(head, ref->name))
769 *reject_reasons |= REJECT_NON_FF_HEAD;
770 else
771 *reject_reasons |= REJECT_NON_FF_OTHER;
772 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
773 *reject_reasons |= REJECT_ALREADY_EXISTS;
774 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
775 *reject_reasons |= REJECT_FETCH_FIRST;
776 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
777 *reject_reasons |= REJECT_NEEDS_FORCE;
778 }
779 }
780}
781void transport_verify_remote_names(int nr_heads, const char **heads)
783{
784 int i;
785 for (i = 0; i < nr_heads; i++) {
787 const char *local = heads[i];
788 const char *remote = strrchr(heads[i], ':');
789 if (*local == '+')
791 local++;
792 /* A matching refspec is okay. */
794 if (remote == local && remote[1] == '\0')
795 continue;
796 remote = remote ? (remote + 1) : local;
798 if (check_refname_format(remote,
799 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
800 die("remote part of refspec is not a valid name in %s",
801 heads[i]);
802 }
803}
804static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
806{
807 struct git_transport_data *data = transport->data;
808 struct send_pack_args args;
809 int ret;
810 if (!data->got_remote_heads) {
812 struct ref *tmp_refs;
813 connect_setup(transport, 1, 0);
814 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
816 NULL, &data->shallow);
817 data->got_remote_heads = 1;
818 }
819 memset(&args, 0, sizeof(args));
821 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
822 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
823 args.use_thin_pack = data->options.thin;
824 args.verbose = (transport->verbose > 0);
825 args.quiet = (transport->verbose < 0);
826 args.progress = transport->progress;
827 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
828 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
829 args.push_cert = !!(flags & TRANSPORT_PUSH_CERT);
830 args.url = transport->url;
831 ret = send_pack(&args, data->fd, data->conn, remote_refs,
833 &data->extra_have);
834 close(data->fd[1]);
836 close(data->fd[0]);
837 ret |= finish_connect(data->conn);
838 data->conn = NULL;
839 data->got_remote_heads = 0;
840 return ret;
842}
843static int connect_git(struct transport *transport, const char *name,
845 const char *executable, int fd[2])
846{
847 struct git_transport_data *data = transport->data;
848 data->conn = git_connect(data->fd, transport->url,
849 executable, 0);
850 fd[0] = data->fd[0];
851 fd[1] = data->fd[1];
852 return 0;
853}
854static int disconnect_git(struct transport *transport)
856{
857 struct git_transport_data *data = transport->data;
858 if (data->conn) {
859 if (data->got_remote_heads)
860 packet_flush(data->fd[1]);
861 close(data->fd[0]);
862 close(data->fd[1]);
863 finish_connect(data->conn);
864 }
865 free(data);
867 return 0;
868}
869void transport_take_over(struct transport *transport,
871 struct child_process *child)
872{
873 struct git_transport_data *data;
874 if (!transport->smart_options)
876 die("Bug detected: Taking over transport requires non-NULL "
877 "smart_options field.");
878 data = xcalloc(1, sizeof(*data));
880 data->options = *transport->smart_options;
881 data->conn = child;
882 data->fd[0] = data->conn->out;
883 data->fd[1] = data->conn->in;
884 data->got_remote_heads = 0;
885 transport->data = data;
886 transport->set_option = NULL;
888 transport->get_refs_list = get_refs_via_connect;
889 transport->fetch = fetch_refs_via_pack;
890 transport->push = NULL;
891 transport->push_refs = git_transport_push;
892 transport->disconnect = disconnect_git;
893 transport->smart_options = &(data->options);
894 transport->cannot_reuse = 1;
896}
897static int is_file(const char *url)
899{
900 struct stat buf;
901 if (stat(url, &buf))
902 return 0;
903 return S_ISREG(buf.st_mode);
904}
905static int external_specification_len(const char *url)
907{
908 return strchr(url, ':') - url;
909}
910struct transport *transport_get(struct remote *remote, const char *url)
912{
913 const char *helper;
914 struct transport *ret = xcalloc(1, sizeof(*ret));
915 ret->progress = isatty(2);
917 if (!remote)
919 die("No remote provided to transport_get()");
920 ret->got_remote_refs = 0;
922 ret->remote = remote;
923 helper = remote->foreign_vcs;
924 if (!url && remote->url)
926 url = remote->url[0];
927 ret->url = url;
928 /* maybe it is a foreign URL? */
930 if (url) {
931 const char *p = url;
932 while (is_urlschemechar(p == url, *p))
934 p++;
935 if (starts_with(p, "::"))
936 helper = xstrndup(url, p - url);
937 }
938 if (helper) {
940 transport_helper_init(ret, helper);
941 } else if (starts_with(url, "rsync:")) {
942 ret->get_refs_list = get_refs_via_rsync;
943 ret->fetch = fetch_objs_via_rsync;
944 ret->push = rsync_transport_push;
945 ret->smart_options = NULL;
946 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
947 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
948 ret->data = data;
949 ret->get_refs_list = get_refs_from_bundle;
950 ret->fetch = fetch_refs_from_bundle;
951 ret->disconnect = close_bundle;
952 ret->smart_options = NULL;
953 } else if (!is_url(url)
954 || starts_with(url, "file://")
955 || starts_with(url, "git://")
956 || starts_with(url, "ssh://")
957 || starts_with(url, "git+ssh://")
958 || starts_with(url, "ssh+git://")) {
959 /* These are builtin smart transports. */
960 struct git_transport_data *data = xcalloc(1, sizeof(*data));
961 ret->data = data;
962 ret->set_option = NULL;
963 ret->get_refs_list = get_refs_via_connect;
964 ret->fetch = fetch_refs_via_pack;
965 ret->push_refs = git_transport_push;
966 ret->connect = connect_git;
967 ret->disconnect = disconnect_git;
968 ret->smart_options = &(data->options);
969 data->conn = NULL;
971 data->got_remote_heads = 0;
972 } else {
973 /* Unknown protocol in URL. Pass to external handler. */
974 int len = external_specification_len(url);
975 char *handler = xmalloc(len + 1);
976 handler[len] = 0;
977 strncpy(handler, url, len);
978 transport_helper_init(ret, handler);
979 }
980 if (ret->smart_options) {
982 ret->smart_options->thin = 1;
983 ret->smart_options->uploadpack = "git-upload-pack";
984 if (remote->uploadpack)
985 ret->smart_options->uploadpack = remote->uploadpack;
986 ret->smart_options->receivepack = "git-receive-pack";
987 if (remote->receivepack)
988 ret->smart_options->receivepack = remote->receivepack;
989 }
990 return ret;
992}
993int transport_set_option(struct transport *transport,
995 const char *name, const char *value)
996{
997 int git_reports = 1, protocol_reports = 1;
998 if (transport->smart_options)
1000 git_reports = set_git_option(transport->smart_options,
1001 name, value);
1002 if (transport->set_option)
1004 protocol_reports = transport->set_option(transport, name,
1005 value);
1006 /* If either report is 0, report 0 (success). */
1008 if (!git_reports || !protocol_reports)
1009 return 0;
1010 /* If either reports -1 (invalid value), report -1. */
1011 if ((git_reports == -1) || (protocol_reports == -1))
1012 return -1;
1013 /* Otherwise if both report unknown, report unknown. */
1014 return 1;
1015}
1016void transport_set_verbosity(struct transport *transport, int verbosity,
1018 int force_progress)
1019{
1020 if (verbosity >= 1)
1021 transport->verbose = verbosity <= 3 ? verbosity : 3;
1022 if (verbosity < 0)
1023 transport->verbose = -1;
1024 /**
1026 * Rules used to determine whether to report progress (processing aborts
1027 * when a rule is satisfied):
1028 *
1029 * . Report progress, if force_progress is 1 (ie. --progress).
1030 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1031 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1032 * . Report progress if isatty(2) is 1.
1033 **/
1034 if (force_progress >= 0)
1035 transport->progress = !!force_progress;
1036 else
1037 transport->progress = verbosity >= 0 && isatty(2);
1038}
1039static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1041{
1042 int i;
1043 fprintf(stderr, "The following submodule paths contain changes that can\n"
1045 "not be found on any remote:\n");
1046 for (i = 0; i < needs_pushing->nr; i++)
1047 printf(" %s\n", needs_pushing->items[i].string);
1048 fprintf(stderr, "\nPlease try\n\n"
1049 " git push --recurse-submodules=on-demand\n\n"
1050 "or cd to the path and use\n\n"
1051 " git push\n\n"
1052 "to push them to a remote.\n\n");
1053 string_list_clear(needs_pushing, 0);
1055 die("Aborting.");
1057}
1058static int run_pre_push_hook(struct transport *transport,
1060 struct ref *remote_refs)
1061{
1062 int ret = 0, x;
1063 struct ref *r;
1064 struct child_process proc;
1065 struct strbuf buf;
1066 const char *argv[4];
1067 if (!(argv[0] = find_hook("pre-push")))
1069 return 0;
1070 argv[1] = transport->remote->name;
1072 argv[2] = transport->url;
1073 argv[3] = NULL;
1074 memset(&proc, 0, sizeof(proc));
1076 proc.argv = argv;
1077 proc.in = -1;
1078 if (start_command(&proc)) {
1080 finish_command(&proc);
1081 return -1;
1082 }
1083 strbuf_init(&buf, 256);
1085 for (r = remote_refs; r; r = r->next) {
1087 if (!r->peer_ref) continue;
1088 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1089 if (r->status == REF_STATUS_REJECT_STALE) continue;
1090 if (r->status == REF_STATUS_UPTODATE) continue;
1091 strbuf_reset(&buf);
1093 strbuf_addf( &buf, "%s %s %s %s\n",
1094 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1095 r->name, sha1_to_hex(r->old_sha1));
1096 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1098 ret = -1;
1099 break;
1100 }
1101 }
1102 strbuf_release(&buf);
1104 x = close(proc.in);
1106 if (!ret)
1107 ret = x;
1108 x = finish_command(&proc);
1110 if (!ret)
1111 ret = x;
1112 return ret;
1114}
1115int transport_push(struct transport *transport,
1117 int refspec_nr, const char **refspec, int flags,
1118 unsigned int *reject_reasons)
1119{
1120 *reject_reasons = 0;
1121 transport_verify_remote_names(refspec_nr, refspec);
1122 if (transport->push) {
1124 /* Maybe FIXME. But no important transport uses this case. */
1125 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1126 die("This transport does not support using --set-upstream");
1127 return transport->push(transport, refspec_nr, refspec, flags);
1129 } else if (transport->push_refs) {
1130 struct ref *remote_refs;
1131 struct ref *local_refs = get_local_heads();
1132 int match_flags = MATCH_REFS_NONE;
1133 int verbose = (transport->verbose > 0);
1134 int quiet = (transport->verbose < 0);
1135 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1136 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1137 int push_ret, ret, err;
1138 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1140 return -1;
1141 remote_refs = transport->get_refs_list(transport, 1);
1143 if (flags & TRANSPORT_PUSH_ALL)
1145 match_flags |= MATCH_REFS_ALL;
1146 if (flags & TRANSPORT_PUSH_MIRROR)
1147 match_flags |= MATCH_REFS_MIRROR;
1148 if (flags & TRANSPORT_PUSH_PRUNE)
1149 match_flags |= MATCH_REFS_PRUNE;
1150 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1151 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1152 if (match_push_refs(local_refs, &remote_refs,
1154 refspec_nr, refspec, match_flags)) {
1155 return -1;
1156 }
1157 if (transport->smart_options &&
1159 transport->smart_options->cas &&
1160 !is_empty_cas(transport->smart_options->cas))
1161 apply_push_cas(transport->smart_options->cas,
1162 transport->remote, remote_refs);
1163 set_ref_status_for_push(remote_refs,
1165 flags & TRANSPORT_PUSH_MIRROR,
1166 flags & TRANSPORT_PUSH_FORCE);
1167 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1169 if (run_pre_push_hook(transport, remote_refs))
1170 return -1;
1171 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1173 struct ref *ref = remote_refs;
1174 for (; ref; ref = ref->next)
1175 if (!is_null_sha1(ref->new_sha1) &&
1176 !push_unpushed_submodules(ref->new_sha1,
1177 transport->remote->name))
1178 die ("Failed to push all needed submodules!");
1179 }
1180 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1182 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1183 struct ref *ref = remote_refs;
1184 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1185 for (; ref; ref = ref->next)
1187 if (!is_null_sha1(ref->new_sha1) &&
1188 find_unpushed_submodules(ref->new_sha1,
1189 transport->remote->name, &needs_pushing))
1190 die_with_unpushed_submodules(&needs_pushing);
1191 }
1192 push_ret = transport->push_refs(transport, remote_refs, flags);
1194 err = push_had_errors(remote_refs);
1195 ret = push_ret | err;
1196 if (!quiet || err)
1198 transport_print_push_status(transport->url, remote_refs,
1199 verbose | porcelain, porcelain,
1200 reject_reasons);
1201 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1203 set_upstreams(transport, remote_refs, pretend);
1204 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1206 struct ref *ref;
1207 for (ref = remote_refs; ref; ref = ref->next)
1208 transport_update_tracking_ref(transport->remote, ref, verbose);
1209 }
1210 if (porcelain && !push_ret)
1212 puts("Done");
1213 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1214 fprintf(stderr, "Everything up-to-date\n");
1215 return ret;
1217 }
1218 return 1;
1219}
1220const struct ref *transport_get_remote_refs(struct transport *transport)
1222{
1223 if (!transport->got_remote_refs) {
1224 transport->remote_refs = transport->get_refs_list(transport, 0);
1225 transport->got_remote_refs = 1;
1226 }
1227 return transport->remote_refs;
1229}
1230int transport_fetch_refs(struct transport *transport, struct ref *refs)
1232{
1233 int rc;
1234 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1235 struct ref **heads = NULL;
1236 struct ref *rm;
1237 for (rm = refs; rm; rm = rm->next) {
1239 nr_refs++;
1240 if (rm->peer_ref &&
1241 !is_null_sha1(rm->old_sha1) &&
1242 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1243 continue;
1244 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1245 heads[nr_heads++] = rm;
1246 }
1247 if (!nr_heads) {
1249 /*
1250 * When deepening of a shallow repository is requested,
1251 * then local and remote refs are likely to still be equal.
1252 * Just feed them all to the fetch method in that case.
1253 * This condition shouldn't be met in a non-deepening fetch
1254 * (see builtin/fetch.c:quickfetch()).
1255 */
1256 heads = xmalloc(nr_refs * sizeof(*heads));
1257 for (rm = refs; rm; rm = rm->next)
1258 heads[nr_heads++] = rm;
1259 }
1260 rc = transport->fetch(transport, nr_heads, heads);
1262 free(heads);
1264 return rc;
1265}
1266void transport_unlock_pack(struct transport *transport)
1268{
1269 if (transport->pack_lockfile) {
1270 unlink_or_warn(transport->pack_lockfile);
1271 free(transport->pack_lockfile);
1272 transport->pack_lockfile = NULL;
1273 }
1274}
1275int transport_connect(struct transport *transport, const char *name,
1277 const char *exec, int fd[2])
1278{
1279 if (transport->connect)
1280 return transport->connect(transport, name, exec, fd);
1281 else
1282 die("Operation not supported by protocol");
1283}
1284int transport_disconnect(struct transport *transport)
1286{
1287 int ret = 0;
1288 if (transport->disconnect)
1289 ret = transport->disconnect(transport);
1290 free(transport);
1291 return ret;
1292}
1293/*
1295 * Strip username (and password) from a URL and return
1296 * it in a newly allocated string.
1297 */
1298char *transport_anonymize_url(const char *url)
1299{
1300 char *anon_url, *scheme_prefix, *anon_part;
1301 size_t anon_len, prefix_len = 0;
1302 anon_part = strchr(url, '@');
1304 if (url_is_local_not_ssh(url) || !anon_part)
1305 goto literal_copy;
1306 anon_len = strlen(++anon_part);
1308 scheme_prefix = strstr(url, "://");
1309 if (!scheme_prefix) {
1310 if (!strchr(anon_part, ':'))
1311 /* cannot be "me@there:/path/name" */
1312 goto literal_copy;
1313 } else {
1314 const char *cp;
1315 /* make sure scheme is reasonable */
1316 for (cp = url; cp < scheme_prefix; cp++) {
1317 switch (*cp) {
1318 /* RFC 1738 2.1 */
1319 case '+': case '.': case '-':
1320 break; /* ok */
1321 default:
1322 if (isalnum(*cp))
1323 break;
1324 /* it isn't */
1325 goto literal_copy;
1326 }
1327 }
1328 /* @ past the first slash does not count */
1329 cp = strchr(scheme_prefix + 3, '/');
1330 if (cp && cp < anon_part)
1331 goto literal_copy;
1332 prefix_len = scheme_prefix - url + 3;
1333 }
1334 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1335 memcpy(anon_url, url, prefix_len);
1336 memcpy(anon_url + prefix_len, anon_part, anon_len);
1337 return anon_url;
1338literal_copy:
1339 return xstrdup(url);
1340}
1341struct alternate_refs_data {
1343 alternate_ref_fn *fn;
1344 void *data;
1345};
1346static int refs_from_alternate_cb(struct alternate_object_database *e,
1348 void *data)
1349{
1350 char *other;
1351 size_t len;
1352 struct remote *remote;
1353 struct transport *transport;
1354 const struct ref *extra;
1355 struct alternate_refs_data *cb = data;
1356 e->name[-1] = '\0';
1358 other = xstrdup(real_path(e->base));
1359 e->name[-1] = '/';
1360 len = strlen(other);
1361 while (other[len-1] == '/')
1363 other[--len] = '\0';
1364 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1365 goto out;
1366 /* Is this a git repository with refs? */
1367 memcpy(other + len - 8, "/refs", 6);
1368 if (!is_directory(other))
1369 goto out;
1370 other[len - 8] = '\0';
1371 remote = remote_get(other);
1372 transport = transport_get(remote, other);
1373 for (extra = transport_get_remote_refs(transport);
1374 extra;
1375 extra = extra->next)
1376 cb->fn(extra, cb->data);
1377 transport_disconnect(transport);
1378out:
1379 free(other);
1380 return 0;
1381}
1382void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1384{
1385 struct alternate_refs_data cb;
1386 cb.fn = fn;
1387 cb.data = data;
1388 foreach_alt_odb(refs_from_alternate_cb, &cb);
1389}