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#include "sigchain.h"
19
20/* rsync support */
21
22/*
23 * We copy packed-refs and refs/ into a temporary file, then read the
24 * loose refs recursively (sorting whenever possible), and then inserting
25 * those packed refs that are not yet in the list (not validating, but
26 * assuming that the file is sorted).
27 *
28 * Appears refactoring this from refs.c is too cumbersome.
29 */
30
31static int str_cmp(const void *a, const void *b)
32{
33 const char *s1 = a;
34 const char *s2 = b;
35
36 return strcmp(s1, s2);
37}
38
39/* path->buf + name_offset is expected to point to "refs/" */
40
41static int read_loose_refs(struct strbuf *path, int name_offset,
42 struct ref **tail)
43{
44 DIR *dir = opendir(path->buf);
45 struct dirent *de;
46 struct {
47 char **entries;
48 int nr, alloc;
49 } list;
50 int i, pathlen;
51
52 if (!dir)
53 return -1;
54
55 memset (&list, 0, sizeof(list));
56
57 while ((de = readdir(dir))) {
58 if (is_dot_or_dotdot(de->d_name))
59 continue;
60 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
61 list.entries[list.nr++] = xstrdup(de->d_name);
62 }
63 closedir(dir);
64
65 /* sort the list */
66
67 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
68
69 pathlen = path->len;
70 strbuf_addch(path, '/');
71
72 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
73 strbuf_addstr(path, list.entries[i]);
74 if (read_loose_refs(path, name_offset, tail)) {
75 int fd = open(path->buf, O_RDONLY);
76 char buffer[40];
77 struct ref *next;
78
79 if (fd < 0)
80 continue;
81 next = alloc_ref(path->buf + name_offset);
82 if (read_in_full(fd, buffer, 40) != 40 ||
83 get_oid_hex(buffer, &next->old_oid)) {
84 close(fd);
85 free(next);
86 continue;
87 }
88 close(fd);
89 (*tail)->next = next;
90 *tail = next;
91 }
92 }
93 strbuf_setlen(path, pathlen);
94
95 for (i = 0; i < list.nr; i++)
96 free(list.entries[i]);
97 free(list.entries);
98
99 return 0;
100}
101
102/* insert the packed refs for which no loose refs were found */
103
104static void insert_packed_refs(const char *packed_refs, struct ref **list)
105{
106 FILE *f = fopen(packed_refs, "r");
107 static char buffer[PATH_MAX];
108
109 if (!f)
110 return;
111
112 for (;;) {
113 int cmp = 0; /* assigned before used */
114 int len;
115
116 if (!fgets(buffer, sizeof(buffer), f)) {
117 fclose(f);
118 return;
119 }
120
121 if (!isxdigit(buffer[0]))
122 continue;
123 len = strlen(buffer);
124 if (len && buffer[len - 1] == '\n')
125 buffer[--len] = '\0';
126 if (len < 41)
127 continue;
128 while ((*list)->next &&
129 (cmp = strcmp(buffer + 41,
130 (*list)->next->name)) > 0)
131 list = &(*list)->next;
132 if (!(*list)->next || cmp < 0) {
133 struct ref *next = alloc_ref(buffer + 41);
134 buffer[40] = '\0';
135 if (get_oid_hex(buffer, &next->old_oid)) {
136 warning ("invalid SHA-1: %s", buffer);
137 free(next);
138 continue;
139 }
140 next->next = (*list)->next;
141 (*list)->next = next;
142 list = &(*list)->next;
143 }
144 }
145}
146
147static void set_upstreams(struct transport *transport, struct ref *refs,
148 int pretend)
149{
150 struct ref *ref;
151 for (ref = refs; ref; ref = ref->next) {
152 const char *localname;
153 const char *tmp;
154 const char *remotename;
155 unsigned char sha[20];
156 int flag = 0;
157 /*
158 * Check suitability for tracking. Must be successful /
159 * already up-to-date ref create/modify (not delete).
160 */
161 if (ref->status != REF_STATUS_OK &&
162 ref->status != REF_STATUS_UPTODATE)
163 continue;
164 if (!ref->peer_ref)
165 continue;
166 if (is_null_oid(&ref->new_oid))
167 continue;
168
169 /* Follow symbolic refs (mainly for HEAD). */
170 localname = ref->peer_ref->name;
171 remotename = ref->name;
172 tmp = resolve_ref_unsafe(localname, RESOLVE_REF_READING,
173 sha, &flag);
174 if (tmp && flag & REF_ISSYMREF &&
175 starts_with(tmp, "refs/heads/"))
176 localname = tmp;
177
178 /* Both source and destination must be local branches. */
179 if (!localname || !starts_with(localname, "refs/heads/"))
180 continue;
181 if (!remotename || !starts_with(remotename, "refs/heads/"))
182 continue;
183
184 if (!pretend)
185 install_branch_config(BRANCH_CONFIG_VERBOSE,
186 localname + 11, transport->remote->name,
187 remotename);
188 else
189 printf("Would set upstream of '%s' to '%s' of '%s'\n",
190 localname + 11, remotename + 11,
191 transport->remote->name);
192 }
193}
194
195static const char *rsync_url(const char *url)
196{
197 if (!starts_with(url, "rsync://"))
198 skip_prefix(url, "rsync:", &url);
199 return url;
200}
201
202static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
203{
204 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
205 struct ref dummy = {NULL}, *tail = &dummy;
206 struct child_process rsync = CHILD_PROCESS_INIT;
207 const char *args[5];
208 int temp_dir_len;
209
210 if (for_push)
211 return NULL;
212
213 /* copy the refs to the temporary directory */
214
215 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
216 if (!mkdtemp(temp_dir.buf))
217 die_errno ("Could not make temporary directory");
218 temp_dir_len = temp_dir.len;
219
220 strbuf_addstr(&buf, rsync_url(transport->url));
221 strbuf_addstr(&buf, "/refs");
222
223 rsync.argv = args;
224 rsync.stdout_to_stderr = 1;
225 args[0] = "rsync";
226 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
227 args[2] = buf.buf;
228 args[3] = temp_dir.buf;
229 args[4] = NULL;
230
231 if (run_command(&rsync))
232 die ("Could not run rsync to get refs");
233
234 strbuf_reset(&buf);
235 strbuf_addstr(&buf, rsync_url(transport->url));
236 strbuf_addstr(&buf, "/packed-refs");
237
238 args[2] = buf.buf;
239
240 if (run_command(&rsync))
241 die ("Could not run rsync to get refs");
242
243 /* read the copied refs */
244
245 strbuf_addstr(&temp_dir, "/refs");
246 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
247 strbuf_setlen(&temp_dir, temp_dir_len);
248
249 tail = &dummy;
250 strbuf_addstr(&temp_dir, "/packed-refs");
251 insert_packed_refs(temp_dir.buf, &tail);
252 strbuf_setlen(&temp_dir, temp_dir_len);
253
254 if (remove_dir_recursively(&temp_dir, 0))
255 warning ("Error removing temporary directory %s.",
256 temp_dir.buf);
257
258 strbuf_release(&buf);
259 strbuf_release(&temp_dir);
260
261 return dummy.next;
262}
263
264static int fetch_objs_via_rsync(struct transport *transport,
265 int nr_objs, struct ref **to_fetch)
266{
267 struct child_process rsync = CHILD_PROCESS_INIT;
268
269 rsync.stdout_to_stderr = 1;
270 argv_array_push(&rsync.args, "rsync");
271 argv_array_push(&rsync.args, (transport->verbose > 1) ? "-rv" : "-r");
272 argv_array_push(&rsync.args, "--ignore-existing");
273 argv_array_push(&rsync.args, "--exclude");
274 argv_array_push(&rsync.args, "info");
275 argv_array_pushf(&rsync.args, "%s/objects/", rsync_url(transport->url));
276 argv_array_push(&rsync.args, get_object_directory());
277
278 /* NEEDSWORK: handle one level of alternates */
279 return run_command(&rsync);
280}
281
282static int write_one_ref(const char *name, const struct object_id *oid,
283 int flags, void *data)
284{
285 struct strbuf *buf = data;
286 int len = buf->len;
287
288 /* 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
293 strbuf_addstr(buf, name);
294 if (safe_create_leading_directories(buf->buf) ||
295 write_file_gently(buf->buf, "%s", oid_to_hex(oid)))
296 return error("problems writing temporary file %s: %s",
297 buf->buf, strerror(errno));
298 strbuf_setlen(buf, len);
299 return 0;
300}
301
302static int write_refs_to_temp_dir(struct strbuf *temp_dir,
303 int refspec_nr, const char **refspec)
304{
305 int i;
306
307 for (i = 0; i < refspec_nr; i++) {
308 struct object_id oid;
309 char *ref;
310
311 if (dwim_ref(refspec[i], strlen(refspec[i]), oid.hash, &ref) != 1)
312 return error("Could not get ref %s", refspec[i]);
313
314 if (write_one_ref(ref, &oid, 0, temp_dir)) {
315 free(ref);
316 return -1;
317 }
318 free(ref);
319 }
320 return 0;
321}
322
323static int rsync_transport_push(struct transport *transport,
324 int refspec_nr, const char **refspec, int flags)
325{
326 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
327 int result = 0, i;
328 struct child_process rsync = CHILD_PROCESS_INIT;
329 const char *args[10];
330
331 if (flags & TRANSPORT_PUSH_MIRROR)
332 return error("rsync transport does not support mirror mode");
333
334 /* first push the objects */
335
336 strbuf_addstr(&buf, rsync_url(transport->url));
337 strbuf_addch(&buf, '/');
338
339 rsync.argv = args;
340 rsync.stdout_to_stderr = 1;
341 i = 0;
342 args[i++] = "rsync";
343 args[i++] = "-a";
344 if (flags & TRANSPORT_PUSH_DRY_RUN)
345 args[i++] = "--dry-run";
346 if (transport->verbose > 1)
347 args[i++] = "-v";
348 args[i++] = "--ignore-existing";
349 args[i++] = "--exclude";
350 args[i++] = "info";
351 args[i++] = get_object_directory();
352 args[i++] = buf.buf;
353 args[i++] = NULL;
354
355 if (run_command(&rsync))
356 return error("Could not push objects to %s",
357 rsync_url(transport->url));
358
359 /* copy the refs to the temporary directory; they could be packed. */
360
361 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
362 if (!mkdtemp(temp_dir.buf))
363 die_errno ("Could not make temporary directory");
364 strbuf_addch(&temp_dir, '/');
365
366 if (flags & TRANSPORT_PUSH_ALL) {
367 if (for_each_ref(write_one_ref, &temp_dir))
368 return -1;
369 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
370 return -1;
371
372 i = 2;
373 if (flags & TRANSPORT_PUSH_DRY_RUN)
374 args[i++] = "--dry-run";
375 if (!(flags & TRANSPORT_PUSH_FORCE))
376 args[i++] = "--ignore-existing";
377 args[i++] = temp_dir.buf;
378 args[i++] = rsync_url(transport->url);
379 args[i++] = NULL;
380 if (run_command(&rsync))
381 result = error("Could not push to %s",
382 rsync_url(transport->url));
383
384 if (remove_dir_recursively(&temp_dir, 0))
385 warning ("Could not remove temporary directory %s.",
386 temp_dir.buf);
387
388 strbuf_release(&buf);
389 strbuf_release(&temp_dir);
390
391 return result;
392}
393
394struct bundle_transport_data {
395 int fd;
396 struct bundle_header header;
397};
398
399static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
400{
401 struct bundle_transport_data *data = transport->data;
402 struct ref *result = NULL;
403 int i;
404
405 if (for_push)
406 return NULL;
407
408 if (data->fd > 0)
409 close(data->fd);
410 data->fd = read_bundle_header(transport->url, &data->header);
411 if (data->fd < 0)
412 die ("Could not read bundle '%s'.", transport->url);
413 for (i = 0; i < data->header.references.nr; i++) {
414 struct ref_list_entry *e = data->header.references.list + i;
415 struct ref *ref = alloc_ref(e->name);
416 hashcpy(ref->old_oid.hash, e->sha1);
417 ref->next = result;
418 result = ref;
419 }
420 return result;
421}
422
423static int fetch_refs_from_bundle(struct transport *transport,
424 int nr_heads, struct ref **to_fetch)
425{
426 struct bundle_transport_data *data = transport->data;
427 return unbundle(&data->header, data->fd,
428 transport->progress ? BUNDLE_VERBOSE : 0);
429}
430
431static int close_bundle(struct transport *transport)
432{
433 struct bundle_transport_data *data = transport->data;
434 if (data->fd > 0)
435 close(data->fd);
436 free(data);
437 return 0;
438}
439
440struct git_transport_data {
441 struct git_transport_options options;
442 struct child_process *conn;
443 int fd[2];
444 unsigned got_remote_heads : 1;
445 struct sha1_array extra_have;
446 struct sha1_array shallow;
447};
448
449static int set_git_option(struct git_transport_options *opts,
450 const char *name, const char *value)
451{
452 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
453 opts->uploadpack = value;
454 return 0;
455 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
456 opts->receivepack = value;
457 return 0;
458 } else if (!strcmp(name, TRANS_OPT_THIN)) {
459 opts->thin = !!value;
460 return 0;
461 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
462 opts->followtags = !!value;
463 return 0;
464 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
465 opts->keep = !!value;
466 return 0;
467 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
468 opts->update_shallow = !!value;
469 return 0;
470 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
471 if (!value)
472 opts->depth = 0;
473 else {
474 char *end;
475 opts->depth = strtol(value, &end, 0);
476 if (*end)
477 die("transport: invalid depth option '%s'", value);
478 }
479 return 0;
480 }
481 return 1;
482}
483
484static int connect_setup(struct transport *transport, int for_push)
485{
486 struct git_transport_data *data = transport->data;
487 int flags = transport->verbose > 0 ? CONNECT_VERBOSE : 0;
488
489 if (data->conn)
490 return 0;
491
492 switch (transport->family) {
493 case TRANSPORT_FAMILY_ALL: break;
494 case TRANSPORT_FAMILY_IPV4: flags |= CONNECT_IPV4; break;
495 case TRANSPORT_FAMILY_IPV6: flags |= CONNECT_IPV6; break;
496 }
497
498 data->conn = git_connect(data->fd, transport->url,
499 for_push ? data->options.receivepack :
500 data->options.uploadpack,
501 flags);
502
503 return 0;
504}
505
506static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
507{
508 struct git_transport_data *data = transport->data;
509 struct ref *refs;
510
511 connect_setup(transport, for_push);
512 get_remote_heads(data->fd[0], NULL, 0, &refs,
513 for_push ? REF_NORMAL : 0,
514 &data->extra_have,
515 &data->shallow);
516 data->got_remote_heads = 1;
517
518 return refs;
519}
520
521static int fetch_refs_via_pack(struct transport *transport,
522 int nr_heads, struct ref **to_fetch)
523{
524 struct git_transport_data *data = transport->data;
525 struct ref *refs;
526 char *dest = xstrdup(transport->url);
527 struct fetch_pack_args args;
528 struct ref *refs_tmp = NULL;
529
530 memset(&args, 0, sizeof(args));
531 args.uploadpack = data->options.uploadpack;
532 args.keep_pack = data->options.keep;
533 args.lock_pack = 1;
534 args.use_thin_pack = data->options.thin;
535 args.include_tag = data->options.followtags;
536 args.verbose = (transport->verbose > 1);
537 args.quiet = (transport->verbose < 0);
538 args.no_progress = !transport->progress;
539 args.depth = data->options.depth;
540 args.check_self_contained_and_connected =
541 data->options.check_self_contained_and_connected;
542 args.cloning = transport->cloning;
543 args.update_shallow = data->options.update_shallow;
544
545 if (!data->got_remote_heads) {
546 connect_setup(transport, 0);
547 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
548 NULL, &data->shallow);
549 data->got_remote_heads = 1;
550 }
551
552 refs = fetch_pack(&args, data->fd, data->conn,
553 refs_tmp ? refs_tmp : transport->remote_refs,
554 dest, to_fetch, nr_heads, &data->shallow,
555 &transport->pack_lockfile);
556 close(data->fd[0]);
557 close(data->fd[1]);
558 if (finish_connect(data->conn)) {
559 free_refs(refs);
560 refs = NULL;
561 }
562 data->conn = NULL;
563 data->got_remote_heads = 0;
564 data->options.self_contained_and_connected =
565 args.self_contained_and_connected;
566
567 free_refs(refs_tmp);
568 free_refs(refs);
569 free(dest);
570 return (refs ? 0 : -1);
571}
572
573static int push_had_errors(struct ref *ref)
574{
575 for (; ref; ref = ref->next) {
576 switch (ref->status) {
577 case REF_STATUS_NONE:
578 case REF_STATUS_UPTODATE:
579 case REF_STATUS_OK:
580 break;
581 default:
582 return 1;
583 }
584 }
585 return 0;
586}
587
588int transport_refs_pushed(struct ref *ref)
589{
590 for (; ref; ref = ref->next) {
591 switch(ref->status) {
592 case REF_STATUS_NONE:
593 case REF_STATUS_UPTODATE:
594 break;
595 default:
596 return 1;
597 }
598 }
599 return 0;
600}
601
602void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
603{
604 struct refspec rs;
605
606 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
607 return;
608
609 rs.src = ref->name;
610 rs.dst = NULL;
611
612 if (!remote_find_tracking(remote, &rs)) {
613 if (verbose)
614 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
615 if (ref->deletion) {
616 delete_ref(rs.dst, NULL, 0);
617 } else
618 update_ref("update by push", rs.dst,
619 ref->new_oid.hash, NULL, 0, 0);
620 free(rs.dst);
621 }
622}
623
624static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
625{
626 if (porcelain) {
627 if (from)
628 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
629 else
630 fprintf(stdout, "%c\t:%s\t", flag, to->name);
631 if (msg)
632 fprintf(stdout, "%s (%s)\n", summary, msg);
633 else
634 fprintf(stdout, "%s\n", summary);
635 } else {
636 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
637 if (from)
638 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
639 else
640 fputs(prettify_refname(to->name), stderr);
641 if (msg) {
642 fputs(" (", stderr);
643 fputs(msg, stderr);
644 fputc(')', stderr);
645 }
646 fputc('\n', stderr);
647 }
648}
649
650static const char *status_abbrev(unsigned char sha1[20])
651{
652 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
653}
654
655static void print_ok_ref_status(struct ref *ref, int porcelain)
656{
657 if (ref->deletion)
658 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
659 else if (is_null_oid(&ref->old_oid))
660 print_ref_status('*',
661 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
662 "[new branch]"),
663 ref, ref->peer_ref, NULL, porcelain);
664 else {
665 struct strbuf quickref = STRBUF_INIT;
666 char type;
667 const char *msg;
668
669 strbuf_addstr(&quickref, status_abbrev(ref->old_oid.hash));
670 if (ref->forced_update) {
671 strbuf_addstr(&quickref, "...");
672 type = '+';
673 msg = "forced update";
674 } else {
675 strbuf_addstr(&quickref, "..");
676 type = ' ';
677 msg = NULL;
678 }
679 strbuf_addstr(&quickref, status_abbrev(ref->new_oid.hash));
680
681 print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg, porcelain);
682 strbuf_release(&quickref);
683 }
684}
685
686static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
687{
688 if (!count)
689 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
690
691 switch(ref->status) {
692 case REF_STATUS_NONE:
693 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
694 break;
695 case REF_STATUS_REJECT_NODELETE:
696 print_ref_status('!', "[rejected]", ref, NULL,
697 "remote does not support deleting refs", porcelain);
698 break;
699 case REF_STATUS_UPTODATE:
700 print_ref_status('=', "[up to date]", ref,
701 ref->peer_ref, NULL, porcelain);
702 break;
703 case REF_STATUS_REJECT_NONFASTFORWARD:
704 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
705 "non-fast-forward", porcelain);
706 break;
707 case REF_STATUS_REJECT_ALREADY_EXISTS:
708 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
709 "already exists", porcelain);
710 break;
711 case REF_STATUS_REJECT_FETCH_FIRST:
712 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
713 "fetch first", porcelain);
714 break;
715 case REF_STATUS_REJECT_NEEDS_FORCE:
716 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
717 "needs force", porcelain);
718 break;
719 case REF_STATUS_REJECT_STALE:
720 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
721 "stale info", porcelain);
722 break;
723 case REF_STATUS_REJECT_SHALLOW:
724 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
725 "new shallow roots not allowed", porcelain);
726 break;
727 case REF_STATUS_REMOTE_REJECT:
728 print_ref_status('!', "[remote rejected]", ref,
729 ref->deletion ? NULL : ref->peer_ref,
730 ref->remote_status, porcelain);
731 break;
732 case REF_STATUS_EXPECTING_REPORT:
733 print_ref_status('!', "[remote failure]", ref,
734 ref->deletion ? NULL : ref->peer_ref,
735 "remote failed to report status", porcelain);
736 break;
737 case REF_STATUS_ATOMIC_PUSH_FAILED:
738 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
739 "atomic push failed", porcelain);
740 break;
741 case REF_STATUS_OK:
742 print_ok_ref_status(ref, porcelain);
743 break;
744 }
745
746 return 1;
747}
748
749void transport_print_push_status(const char *dest, struct ref *refs,
750 int verbose, int porcelain, unsigned int *reject_reasons)
751{
752 struct ref *ref;
753 int n = 0;
754 unsigned char head_sha1[20];
755 char *head;
756
757 head = resolve_refdup("HEAD", RESOLVE_REF_READING, head_sha1, NULL);
758
759 if (verbose) {
760 for (ref = refs; ref; ref = ref->next)
761 if (ref->status == REF_STATUS_UPTODATE)
762 n += print_one_push_status(ref, dest, n, porcelain);
763 }
764
765 for (ref = refs; ref; ref = ref->next)
766 if (ref->status == REF_STATUS_OK)
767 n += print_one_push_status(ref, dest, n, porcelain);
768
769 *reject_reasons = 0;
770 for (ref = refs; ref; ref = ref->next) {
771 if (ref->status != REF_STATUS_NONE &&
772 ref->status != REF_STATUS_UPTODATE &&
773 ref->status != REF_STATUS_OK)
774 n += print_one_push_status(ref, dest, n, porcelain);
775 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
776 if (head != NULL && !strcmp(head, ref->name))
777 *reject_reasons |= REJECT_NON_FF_HEAD;
778 else
779 *reject_reasons |= REJECT_NON_FF_OTHER;
780 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
781 *reject_reasons |= REJECT_ALREADY_EXISTS;
782 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
783 *reject_reasons |= REJECT_FETCH_FIRST;
784 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
785 *reject_reasons |= REJECT_NEEDS_FORCE;
786 }
787 }
788 free(head);
789}
790
791void transport_verify_remote_names(int nr_heads, const char **heads)
792{
793 int i;
794
795 for (i = 0; i < nr_heads; i++) {
796 const char *local = heads[i];
797 const char *remote = strrchr(heads[i], ':');
798
799 if (*local == '+')
800 local++;
801
802 /* A matching refspec is okay. */
803 if (remote == local && remote[1] == '\0')
804 continue;
805
806 remote = remote ? (remote + 1) : local;
807 if (check_refname_format(remote,
808 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
809 die("remote part of refspec is not a valid name in %s",
810 heads[i]);
811 }
812}
813
814static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
815{
816 struct git_transport_data *data = transport->data;
817 struct send_pack_args args;
818 int ret;
819
820 if (!data->got_remote_heads) {
821 struct ref *tmp_refs;
822 connect_setup(transport, 1);
823
824 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL,
825 NULL, &data->shallow);
826 data->got_remote_heads = 1;
827 }
828
829 memset(&args, 0, sizeof(args));
830 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
831 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
832 args.use_thin_pack = data->options.thin;
833 args.verbose = (transport->verbose > 0);
834 args.quiet = (transport->verbose < 0);
835 args.progress = transport->progress;
836 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
837 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
838 args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
839 args.url = transport->url;
840
841 if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
842 args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
843 else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
844 args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
845 else
846 args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
847
848 ret = send_pack(&args, data->fd, data->conn, remote_refs,
849 &data->extra_have);
850
851 close(data->fd[1]);
852 close(data->fd[0]);
853 ret |= finish_connect(data->conn);
854 data->conn = NULL;
855 data->got_remote_heads = 0;
856
857 return ret;
858}
859
860static int connect_git(struct transport *transport, const char *name,
861 const char *executable, int fd[2])
862{
863 struct git_transport_data *data = transport->data;
864 data->conn = git_connect(data->fd, transport->url,
865 executable, 0);
866 fd[0] = data->fd[0];
867 fd[1] = data->fd[1];
868 return 0;
869}
870
871static int disconnect_git(struct transport *transport)
872{
873 struct git_transport_data *data = transport->data;
874 if (data->conn) {
875 if (data->got_remote_heads)
876 packet_flush(data->fd[1]);
877 close(data->fd[0]);
878 close(data->fd[1]);
879 finish_connect(data->conn);
880 }
881
882 free(data);
883 return 0;
884}
885
886void transport_take_over(struct transport *transport,
887 struct child_process *child)
888{
889 struct git_transport_data *data;
890
891 if (!transport->smart_options)
892 die("Bug detected: Taking over transport requires non-NULL "
893 "smart_options field.");
894
895 data = xcalloc(1, sizeof(*data));
896 data->options = *transport->smart_options;
897 data->conn = child;
898 data->fd[0] = data->conn->out;
899 data->fd[1] = data->conn->in;
900 data->got_remote_heads = 0;
901 transport->data = data;
902
903 transport->set_option = NULL;
904 transport->get_refs_list = get_refs_via_connect;
905 transport->fetch = fetch_refs_via_pack;
906 transport->push = NULL;
907 transport->push_refs = git_transport_push;
908 transport->disconnect = disconnect_git;
909 transport->smart_options = &(data->options);
910
911 transport->cannot_reuse = 1;
912}
913
914static int is_file(const char *url)
915{
916 struct stat buf;
917 if (stat(url, &buf))
918 return 0;
919 return S_ISREG(buf.st_mode);
920}
921
922static int external_specification_len(const char *url)
923{
924 return strchr(url, ':') - url;
925}
926
927static const struct string_list *protocol_whitelist(void)
928{
929 static int enabled = -1;
930 static struct string_list allowed = STRING_LIST_INIT_DUP;
931
932 if (enabled < 0) {
933 const char *v = getenv("GIT_ALLOW_PROTOCOL");
934 if (v) {
935 string_list_split(&allowed, v, ':', -1);
936 string_list_sort(&allowed);
937 enabled = 1;
938 } else {
939 enabled = 0;
940 }
941 }
942
943 return enabled ? &allowed : NULL;
944}
945
946int is_transport_allowed(const char *type)
947{
948 const struct string_list *allowed = protocol_whitelist();
949 return !allowed || string_list_has_string(allowed, type);
950}
951
952void transport_check_allowed(const char *type)
953{
954 if (!is_transport_allowed(type))
955 die("transport '%s' not allowed", type);
956}
957
958int transport_restrict_protocols(void)
959{
960 return !!protocol_whitelist();
961}
962
963struct transport *transport_get(struct remote *remote, const char *url)
964{
965 const char *helper;
966 struct transport *ret = xcalloc(1, sizeof(*ret));
967
968 ret->progress = isatty(2);
969
970 if (!remote)
971 die("No remote provided to transport_get()");
972
973 ret->got_remote_refs = 0;
974 ret->remote = remote;
975 helper = remote->foreign_vcs;
976
977 if (!url && remote->url)
978 url = remote->url[0];
979 ret->url = url;
980
981 /* maybe it is a foreign URL? */
982 if (url) {
983 const char *p = url;
984
985 while (is_urlschemechar(p == url, *p))
986 p++;
987 if (starts_with(p, "::"))
988 helper = xstrndup(url, p - url);
989 }
990
991 if (helper) {
992 transport_helper_init(ret, helper);
993 } else if (starts_with(url, "rsync:")) {
994 transport_check_allowed("rsync");
995 ret->get_refs_list = get_refs_via_rsync;
996 ret->fetch = fetch_objs_via_rsync;
997 ret->push = rsync_transport_push;
998 ret->smart_options = NULL;
999 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
1000 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
1001 transport_check_allowed("file");
1002 ret->data = data;
1003 ret->get_refs_list = get_refs_from_bundle;
1004 ret->fetch = fetch_refs_from_bundle;
1005 ret->disconnect = close_bundle;
1006 ret->smart_options = NULL;
1007 } else if (!is_url(url)
1008 || starts_with(url, "file://")
1009 || starts_with(url, "git://")
1010 || starts_with(url, "ssh://")
1011 || starts_with(url, "git+ssh://")
1012 || starts_with(url, "ssh+git://")) {
1013 /*
1014 * These are builtin smart transports; "allowed" transports
1015 * will be checked individually in git_connect.
1016 */
1017 struct git_transport_data *data = xcalloc(1, sizeof(*data));
1018 ret->data = data;
1019 ret->set_option = NULL;
1020 ret->get_refs_list = get_refs_via_connect;
1021 ret->fetch = fetch_refs_via_pack;
1022 ret->push_refs = git_transport_push;
1023 ret->connect = connect_git;
1024 ret->disconnect = disconnect_git;
1025 ret->smart_options = &(data->options);
1026
1027 data->conn = NULL;
1028 data->got_remote_heads = 0;
1029 } else {
1030 /* Unknown protocol in URL. Pass to external handler. */
1031 int len = external_specification_len(url);
1032 char *handler = xmemdupz(url, len);
1033 transport_helper_init(ret, handler);
1034 }
1035
1036 if (ret->smart_options) {
1037 ret->smart_options->thin = 1;
1038 ret->smart_options->uploadpack = "git-upload-pack";
1039 if (remote->uploadpack)
1040 ret->smart_options->uploadpack = remote->uploadpack;
1041 ret->smart_options->receivepack = "git-receive-pack";
1042 if (remote->receivepack)
1043 ret->smart_options->receivepack = remote->receivepack;
1044 }
1045
1046 return ret;
1047}
1048
1049int transport_set_option(struct transport *transport,
1050 const char *name, const char *value)
1051{
1052 int git_reports = 1, protocol_reports = 1;
1053
1054 if (transport->smart_options)
1055 git_reports = set_git_option(transport->smart_options,
1056 name, value);
1057
1058 if (transport->set_option)
1059 protocol_reports = transport->set_option(transport, name,
1060 value);
1061
1062 /* If either report is 0, report 0 (success). */
1063 if (!git_reports || !protocol_reports)
1064 return 0;
1065 /* If either reports -1 (invalid value), report -1. */
1066 if ((git_reports == -1) || (protocol_reports == -1))
1067 return -1;
1068 /* Otherwise if both report unknown, report unknown. */
1069 return 1;
1070}
1071
1072void transport_set_verbosity(struct transport *transport, int verbosity,
1073 int force_progress)
1074{
1075 if (verbosity >= 1)
1076 transport->verbose = verbosity <= 3 ? verbosity : 3;
1077 if (verbosity < 0)
1078 transport->verbose = -1;
1079
1080 /**
1081 * Rules used to determine whether to report progress (processing aborts
1082 * when a rule is satisfied):
1083 *
1084 * . Report progress, if force_progress is 1 (ie. --progress).
1085 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1086 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1087 * . Report progress if isatty(2) is 1.
1088 **/
1089 if (force_progress >= 0)
1090 transport->progress = !!force_progress;
1091 else
1092 transport->progress = verbosity >= 0 && isatty(2);
1093}
1094
1095static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1096{
1097 int i;
1098
1099 fprintf(stderr, "The following submodule paths contain changes that can\n"
1100 "not be found on any remote:\n");
1101 for (i = 0; i < needs_pushing->nr; i++)
1102 printf(" %s\n", needs_pushing->items[i].string);
1103 fprintf(stderr, "\nPlease try\n\n"
1104 " git push --recurse-submodules=on-demand\n\n"
1105 "or cd to the path and use\n\n"
1106 " git push\n\n"
1107 "to push them to a remote.\n\n");
1108
1109 string_list_clear(needs_pushing, 0);
1110
1111 die("Aborting.");
1112}
1113
1114static int run_pre_push_hook(struct transport *transport,
1115 struct ref *remote_refs)
1116{
1117 int ret = 0, x;
1118 struct ref *r;
1119 struct child_process proc = CHILD_PROCESS_INIT;
1120 struct strbuf buf;
1121 const char *argv[4];
1122
1123 if (!(argv[0] = find_hook("pre-push")))
1124 return 0;
1125
1126 argv[1] = transport->remote->name;
1127 argv[2] = transport->url;
1128 argv[3] = NULL;
1129
1130 proc.argv = argv;
1131 proc.in = -1;
1132
1133 if (start_command(&proc)) {
1134 finish_command(&proc);
1135 return -1;
1136 }
1137
1138 sigchain_push(SIGPIPE, SIG_IGN);
1139
1140 strbuf_init(&buf, 256);
1141
1142 for (r = remote_refs; r; r = r->next) {
1143 if (!r->peer_ref) continue;
1144 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1145 if (r->status == REF_STATUS_REJECT_STALE) continue;
1146 if (r->status == REF_STATUS_UPTODATE) continue;
1147
1148 strbuf_reset(&buf);
1149 strbuf_addf( &buf, "%s %s %s %s\n",
1150 r->peer_ref->name, oid_to_hex(&r->new_oid),
1151 r->name, oid_to_hex(&r->old_oid));
1152
1153 if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
1154 /* We do not mind if a hook does not read all refs. */
1155 if (errno != EPIPE)
1156 ret = -1;
1157 break;
1158 }
1159 }
1160
1161 strbuf_release(&buf);
1162
1163 x = close(proc.in);
1164 if (!ret)
1165 ret = x;
1166
1167 sigchain_pop(SIGPIPE);
1168
1169 x = finish_command(&proc);
1170 if (!ret)
1171 ret = x;
1172
1173 return ret;
1174}
1175
1176int transport_push(struct transport *transport,
1177 int refspec_nr, const char **refspec, int flags,
1178 unsigned int *reject_reasons)
1179{
1180 *reject_reasons = 0;
1181 transport_verify_remote_names(refspec_nr, refspec);
1182
1183 if (transport->push) {
1184 /* Maybe FIXME. But no important transport uses this case. */
1185 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1186 die("This transport does not support using --set-upstream");
1187
1188 return transport->push(transport, refspec_nr, refspec, flags);
1189 } else if (transport->push_refs) {
1190 struct ref *remote_refs;
1191 struct ref *local_refs = get_local_heads();
1192 int match_flags = MATCH_REFS_NONE;
1193 int verbose = (transport->verbose > 0);
1194 int quiet = (transport->verbose < 0);
1195 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1196 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1197 int push_ret, ret, err;
1198
1199 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1200 return -1;
1201
1202 remote_refs = transport->get_refs_list(transport, 1);
1203
1204 if (flags & TRANSPORT_PUSH_ALL)
1205 match_flags |= MATCH_REFS_ALL;
1206 if (flags & TRANSPORT_PUSH_MIRROR)
1207 match_flags |= MATCH_REFS_MIRROR;
1208 if (flags & TRANSPORT_PUSH_PRUNE)
1209 match_flags |= MATCH_REFS_PRUNE;
1210 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1211 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1212
1213 if (match_push_refs(local_refs, &remote_refs,
1214 refspec_nr, refspec, match_flags)) {
1215 return -1;
1216 }
1217
1218 if (transport->smart_options &&
1219 transport->smart_options->cas &&
1220 !is_empty_cas(transport->smart_options->cas))
1221 apply_push_cas(transport->smart_options->cas,
1222 transport->remote, remote_refs);
1223
1224 set_ref_status_for_push(remote_refs,
1225 flags & TRANSPORT_PUSH_MIRROR,
1226 flags & TRANSPORT_PUSH_FORCE);
1227
1228 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1229 if (run_pre_push_hook(transport, remote_refs))
1230 return -1;
1231
1232 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
1233 struct ref *ref = remote_refs;
1234 for (; ref; ref = ref->next)
1235 if (!is_null_oid(&ref->new_oid) &&
1236 !push_unpushed_submodules(ref->new_oid.hash,
1237 transport->remote->name))
1238 die ("Failed to push all needed submodules!");
1239 }
1240
1241 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1242 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
1243 struct ref *ref = remote_refs;
1244 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1245
1246 for (; ref; ref = ref->next)
1247 if (!is_null_oid(&ref->new_oid) &&
1248 find_unpushed_submodules(ref->new_oid.hash,
1249 transport->remote->name, &needs_pushing))
1250 die_with_unpushed_submodules(&needs_pushing);
1251 }
1252
1253 push_ret = transport->push_refs(transport, remote_refs, flags);
1254 err = push_had_errors(remote_refs);
1255 ret = push_ret | err;
1256
1257 if (!quiet || err)
1258 transport_print_push_status(transport->url, remote_refs,
1259 verbose | porcelain, porcelain,
1260 reject_reasons);
1261
1262 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1263 set_upstreams(transport, remote_refs, pretend);
1264
1265 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1266 struct ref *ref;
1267 for (ref = remote_refs; ref; ref = ref->next)
1268 transport_update_tracking_ref(transport->remote, ref, verbose);
1269 }
1270
1271 if (porcelain && !push_ret)
1272 puts("Done");
1273 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1274 fprintf(stderr, "Everything up-to-date\n");
1275
1276 return ret;
1277 }
1278 return 1;
1279}
1280
1281const struct ref *transport_get_remote_refs(struct transport *transport)
1282{
1283 if (!transport->got_remote_refs) {
1284 transport->remote_refs = transport->get_refs_list(transport, 0);
1285 transport->got_remote_refs = 1;
1286 }
1287
1288 return transport->remote_refs;
1289}
1290
1291int transport_fetch_refs(struct transport *transport, struct ref *refs)
1292{
1293 int rc;
1294 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1295 struct ref **heads = NULL;
1296 struct ref *rm;
1297
1298 for (rm = refs; rm; rm = rm->next) {
1299 nr_refs++;
1300 if (rm->peer_ref &&
1301 !is_null_oid(&rm->old_oid) &&
1302 !oidcmp(&rm->peer_ref->old_oid, &rm->old_oid))
1303 continue;
1304 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1305 heads[nr_heads++] = rm;
1306 }
1307
1308 if (!nr_heads) {
1309 /*
1310 * When deepening of a shallow repository is requested,
1311 * then local and remote refs are likely to still be equal.
1312 * Just feed them all to the fetch method in that case.
1313 * This condition shouldn't be met in a non-deepening fetch
1314 * (see builtin/fetch.c:quickfetch()).
1315 */
1316 heads = xmalloc(nr_refs * sizeof(*heads));
1317 for (rm = refs; rm; rm = rm->next)
1318 heads[nr_heads++] = rm;
1319 }
1320
1321 rc = transport->fetch(transport, nr_heads, heads);
1322
1323 free(heads);
1324 return rc;
1325}
1326
1327void transport_unlock_pack(struct transport *transport)
1328{
1329 if (transport->pack_lockfile) {
1330 unlink_or_warn(transport->pack_lockfile);
1331 free(transport->pack_lockfile);
1332 transport->pack_lockfile = NULL;
1333 }
1334}
1335
1336int transport_connect(struct transport *transport, const char *name,
1337 const char *exec, int fd[2])
1338{
1339 if (transport->connect)
1340 return transport->connect(transport, name, exec, fd);
1341 else
1342 die("Operation not supported by protocol");
1343}
1344
1345int transport_disconnect(struct transport *transport)
1346{
1347 int ret = 0;
1348 if (transport->disconnect)
1349 ret = transport->disconnect(transport);
1350 free(transport);
1351 return ret;
1352}
1353
1354/*
1355 * Strip username (and password) from a URL and return
1356 * it in a newly allocated string.
1357 */
1358char *transport_anonymize_url(const char *url)
1359{
1360 char *anon_url, *scheme_prefix, *anon_part;
1361 size_t anon_len, prefix_len = 0;
1362
1363 anon_part = strchr(url, '@');
1364 if (url_is_local_not_ssh(url) || !anon_part)
1365 goto literal_copy;
1366
1367 anon_len = strlen(++anon_part);
1368 scheme_prefix = strstr(url, "://");
1369 if (!scheme_prefix) {
1370 if (!strchr(anon_part, ':'))
1371 /* cannot be "me@there:/path/name" */
1372 goto literal_copy;
1373 } else {
1374 const char *cp;
1375 /* make sure scheme is reasonable */
1376 for (cp = url; cp < scheme_prefix; cp++) {
1377 switch (*cp) {
1378 /* RFC 1738 2.1 */
1379 case '+': case '.': case '-':
1380 break; /* ok */
1381 default:
1382 if (isalnum(*cp))
1383 break;
1384 /* it isn't */
1385 goto literal_copy;
1386 }
1387 }
1388 /* @ past the first slash does not count */
1389 cp = strchr(scheme_prefix + 3, '/');
1390 if (cp && cp < anon_part)
1391 goto literal_copy;
1392 prefix_len = scheme_prefix - url + 3;
1393 }
1394 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1395 memcpy(anon_url, url, prefix_len);
1396 memcpy(anon_url + prefix_len, anon_part, anon_len);
1397 return anon_url;
1398literal_copy:
1399 return xstrdup(url);
1400}
1401
1402struct alternate_refs_data {
1403 alternate_ref_fn *fn;
1404 void *data;
1405};
1406
1407static int refs_from_alternate_cb(struct alternate_object_database *e,
1408 void *data)
1409{
1410 char *other;
1411 size_t len;
1412 struct remote *remote;
1413 struct transport *transport;
1414 const struct ref *extra;
1415 struct alternate_refs_data *cb = data;
1416
1417 e->name[-1] = '\0';
1418 other = xstrdup(real_path(e->base));
1419 e->name[-1] = '/';
1420 len = strlen(other);
1421
1422 while (other[len-1] == '/')
1423 other[--len] = '\0';
1424 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1425 goto out;
1426 /* Is this a git repository with refs? */
1427 memcpy(other + len - 8, "/refs", 6);
1428 if (!is_directory(other))
1429 goto out;
1430 other[len - 8] = '\0';
1431 remote = remote_get(other);
1432 transport = transport_get(remote, other);
1433 for (extra = transport_get_remote_refs(transport);
1434 extra;
1435 extra = extra->next)
1436 cb->fn(extra, cb->data);
1437 transport_disconnect(transport);
1438out:
1439 free(other);
1440 return 0;
1441}
1442
1443void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1444{
1445 struct alternate_refs_data cb;
1446 cb.fn = fn;
1447 cb.data = data;
1448 foreach_alt_odb(refs_from_alternate_cb, &cb);
1449}