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, RESOLVE_REF_READING,
172 sha, &flag);
173 if (tmp && flag & REF_ISSYMREF &&
174 starts_with(tmp, "refs/heads/"))
175 localname = tmp;
176 /* Both source and destination must be local branches. */
178 if (!localname || !starts_with(localname, "refs/heads/"))
179 continue;
180 if (!remotename || !starts_with(remotename, "refs/heads/"))
181 continue;
182 if (!pretend)
184 install_branch_config(BRANCH_CONFIG_VERBOSE,
185 localname + 11, transport->remote->name,
186 remotename);
187 else
188 printf("Would set upstream of '%s' to '%s' of '%s'\n",
189 localname + 11, remotename + 11,
190 transport->remote->name);
191 }
192}
193static const char *rsync_url(const char *url)
195{
196 if (!starts_with(url, "rsync://"))
197 skip_prefix(url, "rsync:", &url);
198 return url;
199}
200static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
202{
203 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
204 struct ref dummy = {NULL}, *tail = &dummy;
205 struct child_process rsync = CHILD_PROCESS_INIT;
206 const char *args[5];
207 int temp_dir_len;
208 if (for_push)
210 return NULL;
211 /* copy the refs to the temporary directory */
213 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
215 if (!mkdtemp(temp_dir.buf))
216 die_errno ("Could not make temporary directory");
217 temp_dir_len = temp_dir.len;
218 strbuf_addstr(&buf, rsync_url(transport->url));
220 strbuf_addstr(&buf, "/refs");
221 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 = CHILD_PROCESS_INIT;
267 rsync.stdout_to_stderr = 1;
269 argv_array_push(&rsync.args, "rsync");
270 argv_array_push(&rsync.args, (transport->verbose > 1) ? "-rv" : "-r");
271 argv_array_push(&rsync.args, "--ignore-existing");
272 argv_array_push(&rsync.args, "--exclude");
273 argv_array_push(&rsync.args, "info");
274 argv_array_pushf(&rsync.args, "%s/objects/", rsync_url(transport->url));
275 argv_array_push(&rsync.args, get_object_directory());
276 /* NEEDSWORK: handle one level of alternates */
278 return run_command(&rsync);
279}
280static int write_one_ref(const char *name, const unsigned char *sha1,
282 int flags, void *data)
283{
284 struct strbuf *buf = data;
285 int len = buf->len;
286 FILE *f;
287 /* when called via for_each_ref(), flags is non-zero */
289 if (flags && !starts_with(name, "refs/heads/") &&
290 !starts_with(name, "refs/tags/"))
291 return 0;
292 strbuf_addstr(buf, name);
294 if (safe_create_leading_directories(buf->buf) ||
295 !(f = fopen(buf->buf, "w")) ||
296 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
297 fclose(f))
298 return error("problems writing temporary file %s", buf->buf);
299 strbuf_setlen(buf, len);
300 return 0;
301}
302static int write_refs_to_temp_dir(struct strbuf *temp_dir,
304 int refspec_nr, const char **refspec)
305{
306 int i;
307 for (i = 0; i < refspec_nr; i++) {
309 unsigned char sha1[20];
310 char *ref;
311 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
313 return error("Could not get ref %s", refspec[i]);
314 if (write_one_ref(ref, sha1, 0, temp_dir)) {
316 free(ref);
317 return -1;
318 }
319 free(ref);
320 }
321 return 0;
322}
323static int rsync_transport_push(struct transport *transport,
325 int refspec_nr, const char **refspec, int flags)
326{
327 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
328 int result = 0, i;
329 struct child_process rsync = CHILD_PROCESS_INIT;
330 const char *args[10];
331 if (flags & TRANSPORT_PUSH_MIRROR)
333 return error("rsync transport does not support mirror mode");
334 /* first push the objects */
336 strbuf_addstr(&buf, rsync_url(transport->url));
338 strbuf_addch(&buf, '/');
339 rsync.argv = args;
341 rsync.stdout_to_stderr = 1;
342 i = 0;
343 args[i++] = "rsync";
344 args[i++] = "-a";
345 if (flags & TRANSPORT_PUSH_DRY_RUN)
346 args[i++] = "--dry-run";
347 if (transport->verbose > 1)
348 args[i++] = "-v";
349 args[i++] = "--ignore-existing";
350 args[i++] = "--exclude";
351 args[i++] = "info";
352 args[i++] = get_object_directory();
353 args[i++] = buf.buf;
354 args[i++] = NULL;
355 if (run_command(&rsync))
357 return error("Could not push objects to %s",
358 rsync_url(transport->url));
359 /* copy the refs to the temporary directory; they could be packed. */
361 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
363 if (!mkdtemp(temp_dir.buf))
364 die_errno ("Could not make temporary directory");
365 strbuf_addch(&temp_dir, '/');
366 if (flags & TRANSPORT_PUSH_ALL) {
368 if (for_each_ref(write_one_ref, &temp_dir))
369 return -1;
370 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
371 return -1;
372 i = 2;
374 if (flags & TRANSPORT_PUSH_DRY_RUN)
375 args[i++] = "--dry-run";
376 if (!(flags & TRANSPORT_PUSH_FORCE))
377 args[i++] = "--ignore-existing";
378 args[i++] = temp_dir.buf;
379 args[i++] = rsync_url(transport->url);
380 args[i++] = NULL;
381 if (run_command(&rsync))
382 result = error("Could not push to %s",
383 rsync_url(transport->url));
384 if (remove_dir_recursively(&temp_dir, 0))
386 warning ("Could not remove temporary directory %s.",
387 temp_dir.buf);
388 strbuf_release(&buf);
390 strbuf_release(&temp_dir);
391 return result;
393}
394struct bundle_transport_data {
396 int fd;
397 struct bundle_header header;
398};
399static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
401{
402 struct bundle_transport_data *data = transport->data;
403 struct ref *result = NULL;
404 int i;
405 if (for_push)
407 return NULL;
408 if (data->fd > 0)
410 close(data->fd);
411 data->fd = read_bundle_header(transport->url, &data->header);
412 if (data->fd < 0)
413 die ("Could not read bundle '%s'.", transport->url);
414 for (i = 0; i < data->header.references.nr; i++) {
415 struct ref_list_entry *e = data->header.references.list + i;
416 struct ref *ref = alloc_ref(e->name);
417 hashcpy(ref->old_sha1, e->sha1);
418 ref->next = result;
419 result = ref;
420 }
421 return result;
422}
423static int fetch_refs_from_bundle(struct transport *transport,
425 int nr_heads, struct ref **to_fetch)
426{
427 struct bundle_transport_data *data = transport->data;
428 return unbundle(&data->header, data->fd,
429 transport->progress ? BUNDLE_VERBOSE : 0);
430}
431static int close_bundle(struct transport *transport)
433{
434 struct bundle_transport_data *data = transport->data;
435 if (data->fd > 0)
436 close(data->fd);
437 free(data);
438 return 0;
439}
440struct git_transport_data {
442 struct git_transport_options options;
443 struct child_process *conn;
444 int fd[2];
445 unsigned got_remote_heads : 1;
446 struct sha1_array extra_have;
447 struct sha1_array shallow;
448};
449static int set_git_option(struct git_transport_options *opts,
451 const char *name, const char *value)
452{
453 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
454 opts->uploadpack = value;
455 return 0;
456 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
457 opts->receivepack = value;
458 return 0;
459 } else if (!strcmp(name, TRANS_OPT_THIN)) {
460 opts->thin = !!value;
461 return 0;
462 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
463 opts->followtags = !!value;
464 return 0;
465 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
466 opts->keep = !!value;
467 return 0;
468 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
469 opts->update_shallow = !!value;
470 return 0;
471 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
472 if (!value)
473 opts->depth = 0;
474 else {
475 char *end;
476 opts->depth = strtol(value, &end, 0);
477 if (*end)
478 die("transport: invalid depth option '%s'", value);
479 }
480 return 0;
481 } else if (!strcmp(name, TRANS_OPT_PUSH_CERT)) {
482 opts->push_cert = !!value;
483 return 0;
484 }
485 return 1;
486}
487static int connect_setup(struct transport *transport, int for_push, int verbose)
489{
490 struct git_transport_data *data = transport->data;
491 if (data->conn)
493 return 0;
494 data->conn = git_connect(data->fd, transport->url,
496 for_push ? data->options.receivepack :
497 data->options.uploadpack,
498 verbose ? CONNECT_VERBOSE : 0);
499 return 0;
501}
502static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
504{
505 struct git_transport_data *data = transport->data;
506 struct ref *refs;
507 connect_setup(transport, for_push, 0);
509 get_remote_heads(data->fd[0], NULL, 0, &refs,
510 for_push ? REF_NORMAL : 0,
511 &data->extra_have,
512 &data->shallow);
513 data->got_remote_heads = 1;
514 return refs;
516}
517static int fetch_refs_via_pack(struct transport *transport,
519 int nr_heads, struct ref **to_fetch)
520{
521 struct git_transport_data *data = transport->data;
522 const struct ref *refs;
523 char *dest = xstrdup(transport->url);
524 struct fetch_pack_args args;
525 struct ref *refs_tmp = NULL;
526 memset(&args, 0, sizeof(args));
528 args.uploadpack = data->options.uploadpack;
529 args.keep_pack = data->options.keep;
530 args.lock_pack = 1;
531 args.use_thin_pack = data->options.thin;
532 args.include_tag = data->options.followtags;
533 args.verbose = (transport->verbose > 1);
534 args.quiet = (transport->verbose < 0);
535 args.no_progress = !transport->progress;
536 args.depth = data->options.depth;
537 args.check_self_contained_and_connected =
538 data->options.check_self_contained_and_connected;
539 args.cloning = transport->cloning;
540 args.update_shallow = data->options.update_shallow;
541 if (!data->got_remote_heads) {
543 connect_setup(transport, 0, 0);
544 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
545 NULL, &data->shallow);
546 data->got_remote_heads = 1;
547 }
548 refs = fetch_pack(&args, data->fd, data->conn,
550 refs_tmp ? refs_tmp : transport->remote_refs,
551 dest, to_fetch, nr_heads, &data->shallow,
552 &transport->pack_lockfile);
553 close(data->fd[0]);
554 close(data->fd[1]);
555 if (finish_connect(data->conn))
556 refs = NULL;
557 data->conn = NULL;
558 data->got_remote_heads = 0;
559 data->options.self_contained_and_connected =
560 args.self_contained_and_connected;
561 free_refs(refs_tmp);
563 free(dest);
565 return (refs ? 0 : -1);
566}
567static int push_had_errors(struct ref *ref)
569{
570 for (; ref; ref = ref->next) {
571 switch (ref->status) {
572 case REF_STATUS_NONE:
573 case REF_STATUS_UPTODATE:
574 case REF_STATUS_OK:
575 break;
576 default:
577 return 1;
578 }
579 }
580 return 0;
581}
582int transport_refs_pushed(struct ref *ref)
584{
585 for (; ref; ref = ref->next) {
586 switch(ref->status) {
587 case REF_STATUS_NONE:
588 case REF_STATUS_UPTODATE:
589 break;
590 default:
591 return 1;
592 }
593 }
594 return 0;
595}
596void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
598{
599 struct refspec rs;
600 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
602 return;
603 rs.src = ref->name;
605 rs.dst = NULL;
606 if (!remote_find_tracking(remote, &rs)) {
608 if (verbose)
609 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
610 if (ref->deletion) {
611 delete_ref(rs.dst, NULL, 0);
612 } else
613 update_ref("update by push", rs.dst,
614 ref->new_sha1, NULL, 0, 0);
615 free(rs.dst);
616 }
617}
618static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
620{
621 if (porcelain) {
622 if (from)
623 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
624 else
625 fprintf(stdout, "%c\t:%s\t", flag, to->name);
626 if (msg)
627 fprintf(stdout, "%s (%s)\n", summary, msg);
628 else
629 fprintf(stdout, "%s\n", summary);
630 } else {
631 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
632 if (from)
633 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
634 else
635 fputs(prettify_refname(to->name), stderr);
636 if (msg) {
637 fputs(" (", stderr);
638 fputs(msg, stderr);
639 fputc(')', stderr);
640 }
641 fputc('\n', stderr);
642 }
643}
644static const char *status_abbrev(unsigned char sha1[20])
646{
647 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
648}
649static void print_ok_ref_status(struct ref *ref, int porcelain)
651{
652 if (ref->deletion)
653 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
654 else if (is_null_sha1(ref->old_sha1))
655 print_ref_status('*',
656 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
657 "[new branch]"),
658 ref, ref->peer_ref, NULL, porcelain);
659 else {
660 char quickref[84];
661 char type;
662 const char *msg;
663 strcpy(quickref, status_abbrev(ref->old_sha1));
665 if (ref->forced_update) {
666 strcat(quickref, "...");
667 type = '+';
668 msg = "forced update";
669 } else {
670 strcat(quickref, "..");
671 type = ' ';
672 msg = NULL;
673 }
674 strcat(quickref, status_abbrev(ref->new_sha1));
675 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
677 }
678}
679static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
681{
682 if (!count)
683 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
684 switch(ref->status) {
686 case REF_STATUS_NONE:
687 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
688 break;
689 case REF_STATUS_REJECT_NODELETE:
690 print_ref_status('!', "[rejected]", ref, NULL,
691 "remote does not support deleting refs", porcelain);
692 break;
693 case REF_STATUS_UPTODATE:
694 print_ref_status('=', "[up to date]", ref,
695 ref->peer_ref, NULL, porcelain);
696 break;
697 case REF_STATUS_REJECT_NONFASTFORWARD:
698 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
699 "non-fast-forward", porcelain);
700 break;
701 case REF_STATUS_REJECT_ALREADY_EXISTS:
702 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
703 "already exists", porcelain);
704 break;
705 case REF_STATUS_REJECT_FETCH_FIRST:
706 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
707 "fetch first", porcelain);
708 break;
709 case REF_STATUS_REJECT_NEEDS_FORCE:
710 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
711 "needs force", porcelain);
712 break;
713 case REF_STATUS_REJECT_STALE:
714 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
715 "stale info", porcelain);
716 break;
717 case REF_STATUS_REJECT_SHALLOW:
718 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
719 "new shallow roots not allowed", porcelain);
720 break;
721 case REF_STATUS_REMOTE_REJECT:
722 print_ref_status('!', "[remote rejected]", ref,
723 ref->deletion ? NULL : ref->peer_ref,
724 ref->remote_status, porcelain);
725 break;
726 case REF_STATUS_EXPECTING_REPORT:
727 print_ref_status('!', "[remote failure]", ref,
728 ref->deletion ? NULL : ref->peer_ref,
729 "remote failed to report status", porcelain);
730 break;
731 case REF_STATUS_OK:
732 print_ok_ref_status(ref, porcelain);
733 break;
734 }
735 return 1;
737}
738void transport_print_push_status(const char *dest, struct ref *refs,
740 int verbose, int porcelain, unsigned int *reject_reasons)
741{
742 struct ref *ref;
743 int n = 0;
744 unsigned char head_sha1[20];
745 char *head;
746 head = resolve_refdup("HEAD", RESOLVE_REF_READING, head_sha1, NULL);
748 if (verbose) {
750 for (ref = refs; ref; ref = ref->next)
751 if (ref->status == REF_STATUS_UPTODATE)
752 n += print_one_push_status(ref, dest, n, porcelain);
753 }
754 for (ref = refs; ref; ref = ref->next)
756 if (ref->status == REF_STATUS_OK)
757 n += print_one_push_status(ref, dest, n, porcelain);
758 *reject_reasons = 0;
760 for (ref = refs; ref; ref = ref->next) {
761 if (ref->status != REF_STATUS_NONE &&
762 ref->status != REF_STATUS_UPTODATE &&
763 ref->status != REF_STATUS_OK)
764 n += print_one_push_status(ref, dest, n, porcelain);
765 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
766 if (head != NULL && !strcmp(head, ref->name))
767 *reject_reasons |= REJECT_NON_FF_HEAD;
768 else
769 *reject_reasons |= REJECT_NON_FF_OTHER;
770 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
771 *reject_reasons |= REJECT_ALREADY_EXISTS;
772 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
773 *reject_reasons |= REJECT_FETCH_FIRST;
774 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
775 *reject_reasons |= REJECT_NEEDS_FORCE;
776 }
777 }
778}
779void transport_verify_remote_names(int nr_heads, const char **heads)
781{
782 int i;
783 for (i = 0; i < nr_heads; i++) {
785 const char *local = heads[i];
786 const char *remote = strrchr(heads[i], ':');
787 if (*local == '+')
789 local++;
790 /* A matching refspec is okay. */
792 if (remote == local && remote[1] == '\0')
793 continue;
794 remote = remote ? (remote + 1) : local;
796 if (check_refname_format(remote,
797 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
798 die("remote part of refspec is not a valid name in %s",
799 heads[i]);
800 }
801}
802static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
804{
805 struct git_transport_data *data = transport->data;
806 struct send_pack_args args;
807 int ret;
808 if (!data->got_remote_heads) {
810 struct ref *tmp_refs;
811 connect_setup(transport, 1, 0);
812 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
814 NULL, &data->shallow);
815 data->got_remote_heads = 1;
816 }
817 memset(&args, 0, sizeof(args));
819 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
820 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
821 args.use_thin_pack = data->options.thin;
822 args.verbose = (transport->verbose > 0);
823 args.quiet = (transport->verbose < 0);
824 args.progress = transport->progress;
825 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
826 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
827 args.push_cert = !!(flags & TRANSPORT_PUSH_CERT);
828 args.url = transport->url;
829 ret = send_pack(&args, data->fd, data->conn, remote_refs,
831 &data->extra_have);
832 close(data->fd[1]);
834 close(data->fd[0]);
835 ret |= finish_connect(data->conn);
836 data->conn = NULL;
837 data->got_remote_heads = 0;
838 return ret;
840}
841static int connect_git(struct transport *transport, const char *name,
843 const char *executable, int fd[2])
844{
845 struct git_transport_data *data = transport->data;
846 data->conn = git_connect(data->fd, transport->url,
847 executable, 0);
848 fd[0] = data->fd[0];
849 fd[1] = data->fd[1];
850 return 0;
851}
852static int disconnect_git(struct transport *transport)
854{
855 struct git_transport_data *data = transport->data;
856 if (data->conn) {
857 if (data->got_remote_heads)
858 packet_flush(data->fd[1]);
859 close(data->fd[0]);
860 close(data->fd[1]);
861 finish_connect(data->conn);
862 }
863 free(data);
865 return 0;
866}
867void transport_take_over(struct transport *transport,
869 struct child_process *child)
870{
871 struct git_transport_data *data;
872 if (!transport->smart_options)
874 die("Bug detected: Taking over transport requires non-NULL "
875 "smart_options field.");
876 data = xcalloc(1, sizeof(*data));
878 data->options = *transport->smart_options;
879 data->conn = child;
880 data->fd[0] = data->conn->out;
881 data->fd[1] = data->conn->in;
882 data->got_remote_heads = 0;
883 transport->data = data;
884 transport->set_option = NULL;
886 transport->get_refs_list = get_refs_via_connect;
887 transport->fetch = fetch_refs_via_pack;
888 transport->push = NULL;
889 transport->push_refs = git_transport_push;
890 transport->disconnect = disconnect_git;
891 transport->smart_options = &(data->options);
892 transport->cannot_reuse = 1;
894}
895static int is_file(const char *url)
897{
898 struct stat buf;
899 if (stat(url, &buf))
900 return 0;
901 return S_ISREG(buf.st_mode);
902}
903static int external_specification_len(const char *url)
905{
906 return strchr(url, ':') - url;
907}
908struct transport *transport_get(struct remote *remote, const char *url)
910{
911 const char *helper;
912 struct transport *ret = xcalloc(1, sizeof(*ret));
913 ret->progress = isatty(2);
915 if (!remote)
917 die("No remote provided to transport_get()");
918 ret->got_remote_refs = 0;
920 ret->remote = remote;
921 helper = remote->foreign_vcs;
922 if (!url && remote->url)
924 url = remote->url[0];
925 ret->url = url;
926 /* maybe it is a foreign URL? */
928 if (url) {
929 const char *p = url;
930 while (is_urlschemechar(p == url, *p))
932 p++;
933 if (starts_with(p, "::"))
934 helper = xstrndup(url, p - url);
935 }
936 if (helper) {
938 transport_helper_init(ret, helper);
939 } else if (starts_with(url, "rsync:")) {
940 ret->get_refs_list = get_refs_via_rsync;
941 ret->fetch = fetch_objs_via_rsync;
942 ret->push = rsync_transport_push;
943 ret->smart_options = NULL;
944 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
945 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
946 ret->data = data;
947 ret->get_refs_list = get_refs_from_bundle;
948 ret->fetch = fetch_refs_from_bundle;
949 ret->disconnect = close_bundle;
950 ret->smart_options = NULL;
951 } else if (!is_url(url)
952 || starts_with(url, "file://")
953 || starts_with(url, "git://")
954 || starts_with(url, "ssh://")
955 || starts_with(url, "git+ssh://")
956 || starts_with(url, "ssh+git://")) {
957 /* These are builtin smart transports. */
958 struct git_transport_data *data = xcalloc(1, sizeof(*data));
959 ret->data = data;
960 ret->set_option = NULL;
961 ret->get_refs_list = get_refs_via_connect;
962 ret->fetch = fetch_refs_via_pack;
963 ret->push_refs = git_transport_push;
964 ret->connect = connect_git;
965 ret->disconnect = disconnect_git;
966 ret->smart_options = &(data->options);
967 data->conn = NULL;
969 data->got_remote_heads = 0;
970 } else {
971 /* Unknown protocol in URL. Pass to external handler. */
972 int len = external_specification_len(url);
973 char *handler = xmalloc(len + 1);
974 handler[len] = 0;
975 strncpy(handler, url, len);
976 transport_helper_init(ret, handler);
977 }
978 if (ret->smart_options) {
980 ret->smart_options->thin = 1;
981 ret->smart_options->uploadpack = "git-upload-pack";
982 if (remote->uploadpack)
983 ret->smart_options->uploadpack = remote->uploadpack;
984 ret->smart_options->receivepack = "git-receive-pack";
985 if (remote->receivepack)
986 ret->smart_options->receivepack = remote->receivepack;
987 }
988 return ret;
990}
991int transport_set_option(struct transport *transport,
993 const char *name, const char *value)
994{
995 int git_reports = 1, protocol_reports = 1;
996 if (transport->smart_options)
998 git_reports = set_git_option(transport->smart_options,
999 name, value);
1000 if (transport->set_option)
1002 protocol_reports = transport->set_option(transport, name,
1003 value);
1004 /* If either report is 0, report 0 (success). */
1006 if (!git_reports || !protocol_reports)
1007 return 0;
1008 /* If either reports -1 (invalid value), report -1. */
1009 if ((git_reports == -1) || (protocol_reports == -1))
1010 return -1;
1011 /* Otherwise if both report unknown, report unknown. */
1012 return 1;
1013}
1014void transport_set_verbosity(struct transport *transport, int verbosity,
1016 int force_progress)
1017{
1018 if (verbosity >= 1)
1019 transport->verbose = verbosity <= 3 ? verbosity : 3;
1020 if (verbosity < 0)
1021 transport->verbose = -1;
1022 /**
1024 * Rules used to determine whether to report progress (processing aborts
1025 * when a rule is satisfied):
1026 *
1027 * . Report progress, if force_progress is 1 (ie. --progress).
1028 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1029 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1030 * . Report progress if isatty(2) is 1.
1031 **/
1032 if (force_progress >= 0)
1033 transport->progress = !!force_progress;
1034 else
1035 transport->progress = verbosity >= 0 && isatty(2);
1036}
1037static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1039{
1040 int i;
1041 fprintf(stderr, "The following submodule paths contain changes that can\n"
1043 "not be found on any remote:\n");
1044 for (i = 0; i < needs_pushing->nr; i++)
1045 printf(" %s\n", needs_pushing->items[i].string);
1046 fprintf(stderr, "\nPlease try\n\n"
1047 " git push --recurse-submodules=on-demand\n\n"
1048 "or cd to the path and use\n\n"
1049 " git push\n\n"
1050 "to push them to a remote.\n\n");
1051 string_list_clear(needs_pushing, 0);
1053 die("Aborting.");
1055}
1056static int run_pre_push_hook(struct transport *transport,
1058 struct ref *remote_refs)
1059{
1060 int ret = 0, x;
1061 struct ref *r;
1062 struct child_process proc = CHILD_PROCESS_INIT;
1063 struct strbuf buf;
1064 const char *argv[4];
1065 if (!(argv[0] = find_hook("pre-push")))
1067 return 0;
1068 argv[1] = transport->remote->name;
1070 argv[2] = transport->url;
1071 argv[3] = NULL;
1072 proc.argv = argv;
1074 proc.in = -1;
1075 if (start_command(&proc)) {
1077 finish_command(&proc);
1078 return -1;
1079 }
1080 strbuf_init(&buf, 256);
1082 for (r = remote_refs; r; r = r->next) {
1084 if (!r->peer_ref) continue;
1085 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1086 if (r->status == REF_STATUS_REJECT_STALE) continue;
1087 if (r->status == REF_STATUS_UPTODATE) continue;
1088 strbuf_reset(&buf);
1090 strbuf_addf( &buf, "%s %s %s %s\n",
1091 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1092 r->name, sha1_to_hex(r->old_sha1));
1093 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1095 ret = -1;
1096 break;
1097 }
1098 }
1099 strbuf_release(&buf);
1101 x = close(proc.in);
1103 if (!ret)
1104 ret = x;
1105 x = finish_command(&proc);
1107 if (!ret)
1108 ret = x;
1109 return ret;
1111}
1112int transport_push(struct transport *transport,
1114 int refspec_nr, const char **refspec, int flags,
1115 unsigned int *reject_reasons)
1116{
1117 *reject_reasons = 0;
1118 transport_verify_remote_names(refspec_nr, refspec);
1119 if (transport->push) {
1121 /* Maybe FIXME. But no important transport uses this case. */
1122 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1123 die("This transport does not support using --set-upstream");
1124 return transport->push(transport, refspec_nr, refspec, flags);
1126 } else if (transport->push_refs) {
1127 struct ref *remote_refs;
1128 struct ref *local_refs = get_local_heads();
1129 int match_flags = MATCH_REFS_NONE;
1130 int verbose = (transport->verbose > 0);
1131 int quiet = (transport->verbose < 0);
1132 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1133 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1134 int push_ret, ret, err;
1135 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1137 return -1;
1138 remote_refs = transport->get_refs_list(transport, 1);
1140 if (flags & TRANSPORT_PUSH_ALL)
1142 match_flags |= MATCH_REFS_ALL;
1143 if (flags & TRANSPORT_PUSH_MIRROR)
1144 match_flags |= MATCH_REFS_MIRROR;
1145 if (flags & TRANSPORT_PUSH_PRUNE)
1146 match_flags |= MATCH_REFS_PRUNE;
1147 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1148 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1149 if (match_push_refs(local_refs, &remote_refs,
1151 refspec_nr, refspec, match_flags)) {
1152 return -1;
1153 }
1154 if (transport->smart_options &&
1156 transport->smart_options->cas &&
1157 !is_empty_cas(transport->smart_options->cas))
1158 apply_push_cas(transport->smart_options->cas,
1159 transport->remote, remote_refs);
1160 set_ref_status_for_push(remote_refs,
1162 flags & TRANSPORT_PUSH_MIRROR,
1163 flags & TRANSPORT_PUSH_FORCE);
1164 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1166 if (run_pre_push_hook(transport, remote_refs))
1167 return -1;
1168 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1170 struct ref *ref = remote_refs;
1171 for (; ref; ref = ref->next)
1172 if (!is_null_sha1(ref->new_sha1) &&
1173 !push_unpushed_submodules(ref->new_sha1,
1174 transport->remote->name))
1175 die ("Failed to push all needed submodules!");
1176 }
1177 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1179 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1180 struct ref *ref = remote_refs;
1181 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1182 for (; ref; ref = ref->next)
1184 if (!is_null_sha1(ref->new_sha1) &&
1185 find_unpushed_submodules(ref->new_sha1,
1186 transport->remote->name, &needs_pushing))
1187 die_with_unpushed_submodules(&needs_pushing);
1188 }
1189 push_ret = transport->push_refs(transport, remote_refs, flags);
1191 err = push_had_errors(remote_refs);
1192 ret = push_ret | err;
1193 if (!quiet || err)
1195 transport_print_push_status(transport->url, remote_refs,
1196 verbose | porcelain, porcelain,
1197 reject_reasons);
1198 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1200 set_upstreams(transport, remote_refs, pretend);
1201 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1203 struct ref *ref;
1204 for (ref = remote_refs; ref; ref = ref->next)
1205 transport_update_tracking_ref(transport->remote, ref, verbose);
1206 }
1207 if (porcelain && !push_ret)
1209 puts("Done");
1210 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1211 fprintf(stderr, "Everything up-to-date\n");
1212 return ret;
1214 }
1215 return 1;
1216}
1217const struct ref *transport_get_remote_refs(struct transport *transport)
1219{
1220 if (!transport->got_remote_refs) {
1221 transport->remote_refs = transport->get_refs_list(transport, 0);
1222 transport->got_remote_refs = 1;
1223 }
1224 return transport->remote_refs;
1226}
1227int transport_fetch_refs(struct transport *transport, struct ref *refs)
1229{
1230 int rc;
1231 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1232 struct ref **heads = NULL;
1233 struct ref *rm;
1234 for (rm = refs; rm; rm = rm->next) {
1236 nr_refs++;
1237 if (rm->peer_ref &&
1238 !is_null_sha1(rm->old_sha1) &&
1239 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1240 continue;
1241 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1242 heads[nr_heads++] = rm;
1243 }
1244 if (!nr_heads) {
1246 /*
1247 * When deepening of a shallow repository is requested,
1248 * then local and remote refs are likely to still be equal.
1249 * Just feed them all to the fetch method in that case.
1250 * This condition shouldn't be met in a non-deepening fetch
1251 * (see builtin/fetch.c:quickfetch()).
1252 */
1253 heads = xmalloc(nr_refs * sizeof(*heads));
1254 for (rm = refs; rm; rm = rm->next)
1255 heads[nr_heads++] = rm;
1256 }
1257 rc = transport->fetch(transport, nr_heads, heads);
1259 free(heads);
1261 return rc;
1262}
1263void transport_unlock_pack(struct transport *transport)
1265{
1266 if (transport->pack_lockfile) {
1267 unlink_or_warn(transport->pack_lockfile);
1268 free(transport->pack_lockfile);
1269 transport->pack_lockfile = NULL;
1270 }
1271}
1272int transport_connect(struct transport *transport, const char *name,
1274 const char *exec, int fd[2])
1275{
1276 if (transport->connect)
1277 return transport->connect(transport, name, exec, fd);
1278 else
1279 die("Operation not supported by protocol");
1280}
1281int transport_disconnect(struct transport *transport)
1283{
1284 int ret = 0;
1285 if (transport->disconnect)
1286 ret = transport->disconnect(transport);
1287 free(transport);
1288 return ret;
1289}
1290/*
1292 * Strip username (and password) from a URL and return
1293 * it in a newly allocated string.
1294 */
1295char *transport_anonymize_url(const char *url)
1296{
1297 char *anon_url, *scheme_prefix, *anon_part;
1298 size_t anon_len, prefix_len = 0;
1299 anon_part = strchr(url, '@');
1301 if (url_is_local_not_ssh(url) || !anon_part)
1302 goto literal_copy;
1303 anon_len = strlen(++anon_part);
1305 scheme_prefix = strstr(url, "://");
1306 if (!scheme_prefix) {
1307 if (!strchr(anon_part, ':'))
1308 /* cannot be "me@there:/path/name" */
1309 goto literal_copy;
1310 } else {
1311 const char *cp;
1312 /* make sure scheme is reasonable */
1313 for (cp = url; cp < scheme_prefix; cp++) {
1314 switch (*cp) {
1315 /* RFC 1738 2.1 */
1316 case '+': case '.': case '-':
1317 break; /* ok */
1318 default:
1319 if (isalnum(*cp))
1320 break;
1321 /* it isn't */
1322 goto literal_copy;
1323 }
1324 }
1325 /* @ past the first slash does not count */
1326 cp = strchr(scheme_prefix + 3, '/');
1327 if (cp && cp < anon_part)
1328 goto literal_copy;
1329 prefix_len = scheme_prefix - url + 3;
1330 }
1331 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1332 memcpy(anon_url, url, prefix_len);
1333 memcpy(anon_url + prefix_len, anon_part, anon_len);
1334 return anon_url;
1335literal_copy:
1336 return xstrdup(url);
1337}
1338struct alternate_refs_data {
1340 alternate_ref_fn *fn;
1341 void *data;
1342};
1343static int refs_from_alternate_cb(struct alternate_object_database *e,
1345 void *data)
1346{
1347 char *other;
1348 size_t len;
1349 struct remote *remote;
1350 struct transport *transport;
1351 const struct ref *extra;
1352 struct alternate_refs_data *cb = data;
1353 e->name[-1] = '\0';
1355 other = xstrdup(real_path(e->base));
1356 e->name[-1] = '/';
1357 len = strlen(other);
1358 while (other[len-1] == '/')
1360 other[--len] = '\0';
1361 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1362 goto out;
1363 /* Is this a git repository with refs? */
1364 memcpy(other + len - 8, "/refs", 6);
1365 if (!is_directory(other))
1366 goto out;
1367 other[len - 8] = '\0';
1368 remote = remote_get(other);
1369 transport = transport_get(remote, other);
1370 for (extra = transport_get_remote_refs(transport);
1371 extra;
1372 extra = extra->next)
1373 cb->fn(extra, cb->data);
1374 transport_disconnect(transport);
1375out:
1376 free(other);
1377 return 0;
1378}
1379void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1381{
1382 struct alternate_refs_data cb;
1383 cb.fn = fn;
1384 cb.data = data;
1385 foreach_alt_odb(refs_from_alternate_cb, &cb);
1386}