Support remote helpers implementing smart transports
[git/git.git] / transport.c
CommitLineData
9b288516
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1#include "cache.h"
2#include "transport.h"
3#include "run-command.h"
c29727d5
DB
4#include "pkt-line.h"
5#include "fetch-pack.h"
40cb4fab 6#include "send-pack.h"
c29727d5 7#include "walker.h"
c7a8a162 8#include "bundle.h"
cd547b48
JS
9#include "dir.h"
10#include "refs.h"
11
12/* rsync support */
13
14/*
15 * We copy packed-refs and refs/ into a temporary file, then read the
16 * loose refs recursively (sorting whenever possible), and then inserting
17 * those packed refs that are not yet in the list (not validating, but
18 * assuming that the file is sorted).
19 *
20 * Appears refactoring this from refs.c is too cumbersome.
21 */
22
23static int str_cmp(const void *a, const void *b)
24{
25 const char *s1 = a;
26 const char *s2 = b;
27
28 return strcmp(s1, s2);
29}
30
31/* path->buf + name_offset is expected to point to "refs/" */
32
33static int read_loose_refs(struct strbuf *path, int name_offset,
34 struct ref **tail)
35{
36 DIR *dir = opendir(path->buf);
37 struct dirent *de;
38 struct {
39 char **entries;
40 int nr, alloc;
41 } list;
42 int i, pathlen;
43
44 if (!dir)
45 return -1;
46
47 memset (&list, 0, sizeof(list));
48
49 while ((de = readdir(dir))) {
8ca12c0d 50 if (is_dot_or_dotdot(de->d_name))
cd547b48
JS
51 continue;
52 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
53 list.entries[list.nr++] = xstrdup(de->d_name);
54 }
55 closedir(dir);
56
57 /* sort the list */
58
59 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
60
61 pathlen = path->len;
62 strbuf_addch(path, '/');
63
64 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
65 strbuf_addstr(path, list.entries[i]);
66 if (read_loose_refs(path, name_offset, tail)) {
67 int fd = open(path->buf, O_RDONLY);
68 char buffer[40];
69 struct ref *next;
70
71 if (fd < 0)
72 continue;
59c69c0c 73 next = alloc_ref(path->buf + name_offset);
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74 if (read_in_full(fd, buffer, 40) != 40 ||
75 get_sha1_hex(buffer, next->old_sha1)) {
76 close(fd);
77 free(next);
78 continue;
79 }
80 close(fd);
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JS
81 (*tail)->next = next;
82 *tail = next;
83 }
84 }
85 strbuf_setlen(path, pathlen);
86
87 for (i = 0; i < list.nr; i++)
88 free(list.entries[i]);
89 free(list.entries);
90
91 return 0;
92}
93
94/* insert the packed refs for which no loose refs were found */
95
96static void insert_packed_refs(const char *packed_refs, struct ref **list)
97{
98 FILE *f = fopen(packed_refs, "r");
99 static char buffer[PATH_MAX];
100
101 if (!f)
102 return;
103
104 for (;;) {
47ec7943 105 int cmp = cmp, len;
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JS
106
107 if (!fgets(buffer, sizeof(buffer), f)) {
108 fclose(f);
109 return;
110 }
111
112 if (hexval(buffer[0]) > 0xf)
113 continue;
114 len = strlen(buffer);
872c930d 115 if (len && buffer[len - 1] == '\n')
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116 buffer[--len] = '\0';
117 if (len < 41)
118 continue;
119 while ((*list)->next &&
120 (cmp = strcmp(buffer + 41,
121 (*list)->next->name)) > 0)
122 list = &(*list)->next;
123 if (!(*list)->next || cmp < 0) {
59c69c0c 124 struct ref *next = alloc_ref(buffer + 41);
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125 buffer[40] = '\0';
126 if (get_sha1_hex(buffer, next->old_sha1)) {
127 warning ("invalid SHA-1: %s", buffer);
128 free(next);
129 continue;
130 }
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131 next->next = (*list)->next;
132 (*list)->next = next;
133 list = &(*list)->next;
134 }
135 }
136}
137
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138static const char *rsync_url(const char *url)
139{
140 return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
141}
142
64fcef2d 143static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
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144{
145 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
146 struct ref dummy, *tail = &dummy;
147 struct child_process rsync;
148 const char *args[5];
149 int temp_dir_len;
150
64fcef2d
DB
151 if (for_push)
152 return NULL;
153
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154 /* copy the refs to the temporary directory */
155
156 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
157 if (!mkdtemp(temp_dir.buf))
0721c314 158 die_errno ("Could not make temporary directory");
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159 temp_dir_len = temp_dir.len;
160
7efaeba2 161 strbuf_addstr(&buf, rsync_url(transport->url));
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162 strbuf_addstr(&buf, "/refs");
163
164 memset(&rsync, 0, sizeof(rsync));
165 rsync.argv = args;
166 rsync.stdout_to_stderr = 1;
167 args[0] = "rsync";
2b5a06ed 168 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
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169 args[2] = buf.buf;
170 args[3] = temp_dir.buf;
171 args[4] = NULL;
172
173 if (run_command(&rsync))
174 die ("Could not run rsync to get refs");
175
176 strbuf_reset(&buf);
7efaeba2 177 strbuf_addstr(&buf, rsync_url(transport->url));
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178 strbuf_addstr(&buf, "/packed-refs");
179
180 args[2] = buf.buf;
181
182 if (run_command(&rsync))
183 die ("Could not run rsync to get refs");
184
185 /* read the copied refs */
186
187 strbuf_addstr(&temp_dir, "/refs");
188 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
189 strbuf_setlen(&temp_dir, temp_dir_len);
190
191 tail = &dummy;
192 strbuf_addstr(&temp_dir, "/packed-refs");
193 insert_packed_refs(temp_dir.buf, &tail);
194 strbuf_setlen(&temp_dir, temp_dir_len);
195
196 if (remove_dir_recursively(&temp_dir, 0))
197 warning ("Error removing temporary directory %s.",
198 temp_dir.buf);
199
200 strbuf_release(&buf);
201 strbuf_release(&temp_dir);
202
203 return dummy.next;
204}
205
206static int fetch_objs_via_rsync(struct transport *transport,
37148311 207 int nr_objs, struct ref **to_fetch)
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JS
208{
209 struct strbuf buf = STRBUF_INIT;
210 struct child_process rsync;
211 const char *args[8];
212 int result;
213
7efaeba2 214 strbuf_addstr(&buf, rsync_url(transport->url));
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215 strbuf_addstr(&buf, "/objects/");
216
217 memset(&rsync, 0, sizeof(rsync));
218 rsync.argv = args;
219 rsync.stdout_to_stderr = 1;
220 args[0] = "rsync";
2b5a06ed 221 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
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222 args[2] = "--ignore-existing";
223 args[3] = "--exclude";
224 args[4] = "info";
225 args[5] = buf.buf;
226 args[6] = get_object_directory();
227 args[7] = NULL;
228
229 /* NEEDSWORK: handle one level of alternates */
230 result = run_command(&rsync);
231
232 strbuf_release(&buf);
233
234 return result;
235}
236
237static int write_one_ref(const char *name, const unsigned char *sha1,
238 int flags, void *data)
239{
240 struct strbuf *buf = data;
241 int len = buf->len;
242 FILE *f;
243
244 /* when called via for_each_ref(), flags is non-zero */
245 if (flags && prefixcmp(name, "refs/heads/") &&
246 prefixcmp(name, "refs/tags/"))
247 return 0;
248
249 strbuf_addstr(buf, name);
250 if (safe_create_leading_directories(buf->buf) ||
251 !(f = fopen(buf->buf, "w")) ||
252 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
253 fclose(f))
254 return error("problems writing temporary file %s", buf->buf);
255 strbuf_setlen(buf, len);
256 return 0;
257}
258
259static int write_refs_to_temp_dir(struct strbuf *temp_dir,
260 int refspec_nr, const char **refspec)
261{
262 int i;
263
264 for (i = 0; i < refspec_nr; i++) {
265 unsigned char sha1[20];
266 char *ref;
267
268 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
269 return error("Could not get ref %s", refspec[i]);
270
271 if (write_one_ref(ref, sha1, 0, temp_dir)) {
272 free(ref);
273 return -1;
274 }
275 free(ref);
276 }
277 return 0;
278}
279
280static int rsync_transport_push(struct transport *transport,
281 int refspec_nr, const char **refspec, int flags)
282{
283 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
284 int result = 0, i;
285 struct child_process rsync;
ee020f35 286 const char *args[10];
cd547b48 287
94c89ba6
AW
288 if (flags & TRANSPORT_PUSH_MIRROR)
289 return error("rsync transport does not support mirror mode");
290
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291 /* first push the objects */
292
7efaeba2 293 strbuf_addstr(&buf, rsync_url(transport->url));
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294 strbuf_addch(&buf, '/');
295
296 memset(&rsync, 0, sizeof(rsync));
297 rsync.argv = args;
298 rsync.stdout_to_stderr = 1;
ee020f35
SP
299 i = 0;
300 args[i++] = "rsync";
301 args[i++] = "-a";
302 if (flags & TRANSPORT_PUSH_DRY_RUN)
303 args[i++] = "--dry-run";
304 if (transport->verbose > 0)
305 args[i++] = "-v";
306 args[i++] = "--ignore-existing";
307 args[i++] = "--exclude";
308 args[i++] = "info";
309 args[i++] = get_object_directory();
310 args[i++] = buf.buf;
311 args[i++] = NULL;
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JS
312
313 if (run_command(&rsync))
7efaeba2
JS
314 return error("Could not push objects to %s",
315 rsync_url(transport->url));
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JS
316
317 /* copy the refs to the temporary directory; they could be packed. */
318
319 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
320 if (!mkdtemp(temp_dir.buf))
0721c314 321 die_errno ("Could not make temporary directory");
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322 strbuf_addch(&temp_dir, '/');
323
324 if (flags & TRANSPORT_PUSH_ALL) {
325 if (for_each_ref(write_one_ref, &temp_dir))
326 return -1;
327 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
328 return -1;
329
ee020f35
SP
330 i = 2;
331 if (flags & TRANSPORT_PUSH_DRY_RUN)
332 args[i++] = "--dry-run";
333 if (!(flags & TRANSPORT_PUSH_FORCE))
334 args[i++] = "--ignore-existing";
cd547b48 335 args[i++] = temp_dir.buf;
7efaeba2 336 args[i++] = rsync_url(transport->url);
cd547b48
JS
337 args[i++] = NULL;
338 if (run_command(&rsync))
7efaeba2
JS
339 result = error("Could not push to %s",
340 rsync_url(transport->url));
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JS
341
342 if (remove_dir_recursively(&temp_dir, 0))
343 warning ("Could not remove temporary directory %s.",
344 temp_dir.buf);
345
346 strbuf_release(&buf);
347 strbuf_release(&temp_dir);
348
349 return result;
350}
c29727d5 351
c7a8a162
JS
352struct bundle_transport_data {
353 int fd;
354 struct bundle_header header;
355};
356
64fcef2d 357static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
c7a8a162
JS
358{
359 struct bundle_transport_data *data = transport->data;
360 struct ref *result = NULL;
361 int i;
362
64fcef2d
DB
363 if (for_push)
364 return NULL;
365
c7a8a162
JS
366 if (data->fd > 0)
367 close(data->fd);
368 data->fd = read_bundle_header(transport->url, &data->header);
369 if (data->fd < 0)
370 die ("Could not read bundle '%s'.", transport->url);
371 for (i = 0; i < data->header.references.nr; i++) {
372 struct ref_list_entry *e = data->header.references.list + i;
59c69c0c 373 struct ref *ref = alloc_ref(e->name);
c7a8a162 374 hashcpy(ref->old_sha1, e->sha1);
c7a8a162
JS
375 ref->next = result;
376 result = ref;
377 }
378 return result;
379}
380
1788c39c 381static int fetch_refs_from_bundle(struct transport *transport,
37148311 382 int nr_heads, struct ref **to_fetch)
c7a8a162
JS
383{
384 struct bundle_transport_data *data = transport->data;
385 return unbundle(&data->header, data->fd);
386}
387
388static int close_bundle(struct transport *transport)
389{
390 struct bundle_transport_data *data = transport->data;
391 if (data->fd > 0)
392 close(data->fd);
f4e95765 393 free(data);
c7a8a162
JS
394 return 0;
395}
396
9b288516 397struct git_transport_data {
aa5af974 398 struct git_transport_options options;
ba227857
DB
399 struct child_process *conn;
400 int fd[2];
61b075bd 401 unsigned got_remote_heads : 1;
64fcef2d 402 struct extra_have_objects extra_have;
9b288516
DB
403};
404
aa5af974 405static int set_git_option(struct git_transport_options *opts,
9b288516
DB
406 const char *name, const char *value)
407{
c29727d5 408 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
aa5af974 409 opts->uploadpack = value;
c29727d5
DB
410 return 0;
411 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
aa5af974 412 opts->receivepack = value;
9b288516
DB
413 return 0;
414 } else if (!strcmp(name, TRANS_OPT_THIN)) {
aa5af974 415 opts->thin = !!value;
9b288516 416 return 0;
41fa7d2e 417 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
aa5af974 418 opts->followtags = !!value;
41fa7d2e 419 return 0;
c29727d5 420 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
aa5af974 421 opts->keep = !!value;
c29727d5 422 return 0;
c29727d5
DB
423 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
424 if (!value)
aa5af974 425 opts->depth = 0;
c29727d5 426 else
aa5af974 427 opts->depth = atoi(value);
c29727d5 428 return 0;
9b288516
DB
429 }
430 return 1;
431}
432
64fcef2d 433static int connect_setup(struct transport *transport, int for_push, int verbose)
ba227857
DB
434{
435 struct git_transport_data *data = transport->data;
61b075bd
IL
436
437 if (data->conn)
438 return 0;
439
64fcef2d 440 data->conn = git_connect(data->fd, transport->url,
aa5af974
IL
441 for_push ? data->options.receivepack :
442 data->options.uploadpack,
64fcef2d 443 verbose ? CONNECT_VERBOSE : 0);
61b075bd 444
ba227857
DB
445 return 0;
446}
447
64fcef2d 448static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
c29727d5
DB
449{
450 struct git_transport_data *data = transport->data;
451 struct ref *refs;
c29727d5 452
64fcef2d
DB
453 connect_setup(transport, for_push, 0);
454 get_remote_heads(data->fd[0], &refs, 0, NULL,
455 for_push ? REF_NORMAL : 0, &data->extra_have);
61b075bd 456 data->got_remote_heads = 1;
c29727d5
DB
457
458 return refs;
459}
460
1788c39c 461static int fetch_refs_via_pack(struct transport *transport,
37148311 462 int nr_heads, struct ref **to_fetch)
c29727d5
DB
463{
464 struct git_transport_data *data = transport->data;
425b1393 465 char **heads = xmalloc(nr_heads * sizeof(*heads));
e4cd6c7a 466 char **origh = xmalloc(nr_heads * sizeof(*origh));
ba227857 467 const struct ref *refs;
c29727d5
DB
468 char *dest = xstrdup(transport->url);
469 struct fetch_pack_args args;
425b1393 470 int i;
00183cbb 471 struct ref *refs_tmp = NULL;
c29727d5 472
fa740529 473 memset(&args, 0, sizeof(args));
aa5af974
IL
474 args.uploadpack = data->options.uploadpack;
475 args.keep_pack = data->options.keep;
fa740529 476 args.lock_pack = 1;
aa5af974
IL
477 args.use_thin_pack = data->options.thin;
478 args.include_tag = data->options.followtags;
9b373229 479 args.verbose = (transport->verbose > 0);
fe8aa148 480 args.quiet = (transport->verbose < 0);
21188b1e 481 args.no_progress = args.quiet || (!transport->progress && !isatty(1));
aa5af974 482 args.depth = data->options.depth;
c29727d5 483
425b1393 484 for (i = 0; i < nr_heads; i++)
e4cd6c7a 485 origh[i] = heads[i] = xstrdup(to_fetch[i]->name);
ba227857 486
61b075bd 487 if (!data->got_remote_heads) {
64fcef2d 488 connect_setup(transport, 0, 0);
40c155ff 489 get_remote_heads(data->fd[0], &refs_tmp, 0, NULL, 0, NULL);
61b075bd 490 data->got_remote_heads = 1;
ba227857
DB
491 }
492
00183cbb
DB
493 refs = fetch_pack(&args, data->fd, data->conn,
494 refs_tmp ? refs_tmp : transport->remote_refs,
ba227857
DB
495 dest, nr_heads, heads, &transport->pack_lockfile);
496 close(data->fd[0]);
497 close(data->fd[1]);
498 if (finish_connect(data->conn))
499 refs = NULL;
500 data->conn = NULL;
61b075bd 501 data->got_remote_heads = 0;
c29727d5 502
00183cbb
DB
503 free_refs(refs_tmp);
504
425b1393 505 for (i = 0; i < nr_heads; i++)
e4cd6c7a
SP
506 free(origh[i]);
507 free(origh);
508 free(heads);
c29727d5 509 free(dest);
c6bc4005 510 return (refs ? 0 : -1);
c29727d5
DB
511}
512
481c7a6d
JK
513static int push_had_errors(struct ref *ref)
514{
515 for (; ref; ref = ref->next) {
516 switch (ref->status) {
517 case REF_STATUS_NONE:
518 case REF_STATUS_UPTODATE:
519 case REF_STATUS_OK:
520 break;
521 default:
522 return 1;
523 }
524 }
525 return 0;
526}
527
64fcef2d
DB
528static int refs_pushed(struct ref *ref)
529{
530 for (; ref; ref = ref->next) {
531 switch(ref->status) {
532 case REF_STATUS_NONE:
533 case REF_STATUS_UPTODATE:
534 break;
535 default:
536 return 1;
537 }
538 }
539 return 0;
540}
541
542static void update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
543{
544 struct refspec rs;
545
546 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
547 return;
548
549 rs.src = ref->name;
550 rs.dst = NULL;
551
552 if (!remote_find_tracking(remote, &rs)) {
553 if (verbose)
554 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
555 if (ref->deletion) {
556 delete_ref(rs.dst, NULL, 0);
557 } else
558 update_ref("update by push", rs.dst,
559 ref->new_sha1, NULL, 0, 0);
560 free(rs.dst);
561 }
562}
563
564#define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
565
1965ff74 566static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
64fcef2d 567{
1965ff74
LA
568 if (porcelain) {
569 if (from)
570 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
571 else
572 fprintf(stdout, "%c\t:%s\t", flag, to->name);
573 if (msg)
574 fprintf(stdout, "%s (%s)\n", summary, msg);
575 else
576 fprintf(stdout, "%s\n", summary);
577 } else {
578 fprintf(stderr, " %c %-*s ", flag, SUMMARY_WIDTH, summary);
579 if (from)
580 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
581 else
582 fputs(prettify_refname(to->name), stderr);
583 if (msg) {
584 fputs(" (", stderr);
585 fputs(msg, stderr);
586 fputc(')', stderr);
587 }
588 fputc('\n', stderr);
64fcef2d 589 }
64fcef2d
DB
590}
591
592static const char *status_abbrev(unsigned char sha1[20])
593{
594 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
595}
596
1965ff74 597static void print_ok_ref_status(struct ref *ref, int porcelain)
64fcef2d
DB
598{
599 if (ref->deletion)
1965ff74 600 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
64fcef2d
DB
601 else if (is_null_sha1(ref->old_sha1))
602 print_ref_status('*',
603 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
1965ff74
LA
604 "[new branch]"),
605 ref, ref->peer_ref, NULL, porcelain);
64fcef2d
DB
606 else {
607 char quickref[84];
608 char type;
609 const char *msg;
610
611 strcpy(quickref, status_abbrev(ref->old_sha1));
612 if (ref->nonfastforward) {
613 strcat(quickref, "...");
614 type = '+';
615 msg = "forced update";
616 } else {
617 strcat(quickref, "..");
618 type = ' ';
619 msg = NULL;
620 }
621 strcat(quickref, status_abbrev(ref->new_sha1));
622
1965ff74 623 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
64fcef2d
DB
624 }
625}
626
1965ff74 627static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
64fcef2d
DB
628{
629 if (!count)
630 fprintf(stderr, "To %s\n", dest);
631
632 switch(ref->status) {
633 case REF_STATUS_NONE:
1965ff74 634 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
64fcef2d
DB
635 break;
636 case REF_STATUS_REJECT_NODELETE:
637 print_ref_status('!', "[rejected]", ref, NULL,
1965ff74 638 "remote does not support deleting refs", porcelain);
64fcef2d
DB
639 break;
640 case REF_STATUS_UPTODATE:
641 print_ref_status('=', "[up to date]", ref,
1965ff74 642 ref->peer_ref, NULL, porcelain);
64fcef2d
DB
643 break;
644 case REF_STATUS_REJECT_NONFASTFORWARD:
645 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
a75d7b54 646 "non-fast-forward", porcelain);
64fcef2d
DB
647 break;
648 case REF_STATUS_REMOTE_REJECT:
649 print_ref_status('!', "[remote rejected]", ref,
1965ff74
LA
650 ref->deletion ? NULL : ref->peer_ref,
651 ref->remote_status, porcelain);
64fcef2d
DB
652 break;
653 case REF_STATUS_EXPECTING_REPORT:
654 print_ref_status('!', "[remote failure]", ref,
1965ff74
LA
655 ref->deletion ? NULL : ref->peer_ref,
656 "remote failed to report status", porcelain);
64fcef2d
DB
657 break;
658 case REF_STATUS_OK:
1965ff74 659 print_ok_ref_status(ref, porcelain);
64fcef2d
DB
660 break;
661 }
662
663 return 1;
664}
665
1965ff74 666static void print_push_status(const char *dest, struct ref *refs,
07436e43 667 int verbose, int porcelain, int * nonfastforward)
64fcef2d
DB
668{
669 struct ref *ref;
670 int n = 0;
671
672 if (verbose) {
673 for (ref = refs; ref; ref = ref->next)
674 if (ref->status == REF_STATUS_UPTODATE)
1965ff74 675 n += print_one_push_status(ref, dest, n, porcelain);
64fcef2d
DB
676 }
677
678 for (ref = refs; ref; ref = ref->next)
679 if (ref->status == REF_STATUS_OK)
1965ff74 680 n += print_one_push_status(ref, dest, n, porcelain);
64fcef2d 681
07436e43 682 *nonfastforward = 0;
64fcef2d
DB
683 for (ref = refs; ref; ref = ref->next) {
684 if (ref->status != REF_STATUS_NONE &&
685 ref->status != REF_STATUS_UPTODATE &&
686 ref->status != REF_STATUS_OK)
1965ff74 687 n += print_one_push_status(ref, dest, n, porcelain);
07436e43
MM
688 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD)
689 *nonfastforward = 1;
64fcef2d
DB
690 }
691}
692
693static void verify_remote_names(int nr_heads, const char **heads)
694{
695 int i;
696
697 for (i = 0; i < nr_heads; i++) {
698 const char *local = heads[i];
699 const char *remote = strrchr(heads[i], ':');
700
701 if (*local == '+')
702 local++;
703
704 /* A matching refspec is okay. */
705 if (remote == local && remote[1] == '\0')
706 continue;
707
708 remote = remote ? (remote + 1) : local;
709 switch (check_ref_format(remote)) {
710 case 0: /* ok */
711 case CHECK_REF_FORMAT_ONELEVEL:
712 /* ok but a single level -- that is fine for
713 * a match pattern.
714 */
715 case CHECK_REF_FORMAT_WILDCARD:
716 /* ok but ends with a pattern-match character */
717 continue;
718 }
719 die("remote part of refspec is not a valid name in %s",
720 heads[i]);
721 }
722}
723
724static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
f3fa1838 725{
9b288516 726 struct git_transport_data *data = transport->data;
40cb4fab 727 struct send_pack_args args;
64fcef2d
DB
728 int ret;
729
61b075bd 730 if (!data->got_remote_heads) {
64fcef2d
DB
731 struct ref *tmp_refs;
732 connect_setup(transport, 1, 0);
733
734 get_remote_heads(data->fd[0], &tmp_refs, 0, NULL, REF_NORMAL,
735 NULL);
61b075bd 736 data->got_remote_heads = 1;
64fcef2d 737 }
9b288516 738
de1a2fdd 739 memset(&args, 0, sizeof(args));
94c89ba6 740 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
40cb4fab 741 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
aa5af974 742 args.use_thin_pack = data->options.thin;
a108e538 743 args.verbose = !!(flags & TRANSPORT_PUSH_VERBOSE);
12070329 744 args.quiet = !!(flags & TRANSPORT_PUSH_QUIET);
40cb4fab
DB
745 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
746
64fcef2d
DB
747 ret = send_pack(&args, data->fd, data->conn, remote_refs,
748 &data->extra_have);
749
750 close(data->fd[1]);
751 close(data->fd[0]);
752 ret |= finish_connect(data->conn);
753 data->conn = NULL;
61b075bd 754 data->got_remote_heads = 0;
64fcef2d
DB
755
756 return ret;
9b288516
DB
757}
758
f4e95765
SP
759static int disconnect_git(struct transport *transport)
760{
ba227857
DB
761 struct git_transport_data *data = transport->data;
762 if (data->conn) {
61b075bd
IL
763 if (data->got_remote_heads)
764 packet_flush(data->fd[1]);
ba227857
DB
765 close(data->fd[0]);
766 close(data->fd[1]);
767 finish_connect(data->conn);
768 }
769
770 free(data);
f4e95765
SP
771 return 0;
772}
773
61b075bd
IL
774void transport_take_over(struct transport *transport,
775 struct child_process *child)
776{
777 struct git_transport_data *data;
778
779 if (!transport->smart_options)
780 die("Bug detected: Taking over transport requires non-NULL "
781 "smart_options field.");
782
783 data = xcalloc(1, sizeof(*data));
784 data->options = *transport->smart_options;
785 data->conn = child;
786 data->fd[0] = data->conn->out;
787 data->fd[1] = data->conn->in;
788 data->got_remote_heads = 0;
789 transport->data = data;
790
791 transport->set_option = NULL;
792 transport->get_refs_list = get_refs_via_connect;
793 transport->fetch = fetch_refs_via_pack;
794 transport->push = NULL;
795 transport->push_refs = git_transport_push;
796 transport->disconnect = disconnect_git;
797 transport->smart_options = &(data->options);
798}
799
9b288516
DB
800static int is_local(const char *url)
801{
802 const char *colon = strchr(url, ':');
803 const char *slash = strchr(url, '/');
be501813
JS
804 return !colon || (slash && slash < colon) ||
805 has_dos_drive_prefix(url);
9b288516
DB
806}
807
808static int is_file(const char *url)
809{
810 struct stat buf;
811 if (stat(url, &buf))
812 return 0;
813 return S_ISREG(buf.st_mode);
814}
815
25d5cc48
IL
816static int is_url(const char *url)
817{
818 const char *url2, *first_slash;
819
820 if (!url)
821 return 0;
822 url2 = url;
823 first_slash = strchr(url, '/');
824
825 /* Input with no slash at all or slash first can't be URL. */
826 if (!first_slash || first_slash == url)
827 return 0;
828 /* Character before must be : and next must be /. */
829 if (first_slash[-1] != ':' || first_slash[1] != '/')
830 return 0;
831 /* There must be something before the :// */
832 if (first_slash == url + 1)
833 return 0;
834 /*
835 * Check all characters up to first slash - 1. Only alphanum
836 * is allowed.
837 */
838 url2 = url;
839 while (url2 < first_slash - 1) {
840 if (!isalnum((unsigned char)*url2))
841 return 0;
842 url2++;
843 }
844
845 /* Valid enough. */
846 return 1;
847}
848
849static int external_specification_len(const char *url)
850{
851 return strchr(url, ':') - url;
852}
853
e5f4e214 854struct transport *transport_get(struct remote *remote, const char *url)
9b288516 855{
8eb554ae
SP
856 struct transport *ret = xcalloc(1, sizeof(*ret));
857
c1d45cf7
DB
858 if (!remote)
859 die("No remote provided to transport_get()");
860
8eb554ae 861 ret->remote = remote;
fb0cc87e
DB
862
863 if (!url && remote && remote->url)
864 url = remote->url[0];
8eb554ae 865 ret->url = url;
8eb554ae 866
87422439
JS
867 /* maybe it is a foreign URL? */
868 if (url) {
869 const char *p = url;
870
871 while (isalnum(*p))
872 p++;
873 if (!prefixcmp(p, "::"))
874 remote->foreign_vcs = xstrndup(url, p - url);
875 }
876
c578f51d
DB
877 if (remote && remote->foreign_vcs) {
878 transport_helper_init(ret, remote->foreign_vcs);
25d5cc48 879 } else if (!prefixcmp(url, "rsync:")) {
cd547b48
JS
880 ret->get_refs_list = get_refs_via_rsync;
881 ret->fetch = fetch_objs_via_rsync;
882 ret->push = rsync_transport_push;
aa5af974 883 ret->smart_options = NULL;
9b288516 884 } else if (is_local(url) && is_file(url)) {
c7a8a162 885 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
c7a8a162 886 ret->data = data;
824d5776
SP
887 ret->get_refs_list = get_refs_from_bundle;
888 ret->fetch = fetch_refs_from_bundle;
889 ret->disconnect = close_bundle;
aa5af974 890 ret->smart_options = NULL;
25d5cc48
IL
891 } else if (!is_url(url)
892 || !prefixcmp(url, "file://")
893 || !prefixcmp(url, "git://")
894 || !prefixcmp(url, "ssh://")
895 || !prefixcmp(url, "git+ssh://")
896 || !prefixcmp(url, "ssh+git://")) {
897 /* These are builtin smart transports. */
9b288516 898 struct git_transport_data *data = xcalloc(1, sizeof(*data));
9b288516 899 ret->data = data;
aa5af974 900 ret->set_option = NULL;
824d5776
SP
901 ret->get_refs_list = get_refs_via_connect;
902 ret->fetch = fetch_refs_via_pack;
64fcef2d 903 ret->push_refs = git_transport_push;
f4e95765 904 ret->disconnect = disconnect_git;
aa5af974 905 ret->smart_options = &(data->options);
824d5776 906
ba227857 907 data->conn = NULL;
61b075bd 908 data->got_remote_heads = 0;
25d5cc48
IL
909 } else if (!prefixcmp(url, "http://")
910 || !prefixcmp(url, "https://")
911 || !prefixcmp(url, "ftp://")) {
912 /* These three are just plain special. */
913 transport_helper_init(ret, "curl");
914#ifdef NO_CURL
915 error("git was compiled without libcurl support.");
916#endif
917 } else {
918 /* Unknown protocol in URL. Pass to external handler. */
919 int len = external_specification_len(url);
920 char *handler = xmalloc(len + 1);
921 handler[len] = 0;
922 strncpy(handler, url, len);
923 transport_helper_init(ret, handler);
9b288516 924 }
8eb554ae 925
aa5af974
IL
926 if (ret->smart_options) {
927 ret->smart_options->thin = 1;
928 ret->smart_options->uploadpack = "git-upload-pack";
929 if (remote->uploadpack)
930 ret->smart_options->uploadpack = remote->uploadpack;
931 ret->smart_options->receivepack = "git-receive-pack";
932 if (remote->receivepack)
933 ret->smart_options->receivepack = remote->receivepack;
934 }
935
9b288516
DB
936 return ret;
937}
938
939int transport_set_option(struct transport *transport,
940 const char *name, const char *value)
941{
aa5af974
IL
942 int git_reports = 1, protocol_reports = 1;
943
944 if (transport->smart_options)
945 git_reports = set_git_option(transport->smart_options,
946 name, value);
947
824d5776 948 if (transport->set_option)
aa5af974
IL
949 protocol_reports = transport->set_option(transport, name,
950 value);
951
952 /* If either report is 0, report 0 (success). */
953 if (!git_reports || !protocol_reports)
954 return 0;
955 /* If either reports -1 (invalid value), report -1. */
956 if ((git_reports == -1) || (protocol_reports == -1))
957 return -1;
958 /* Otherwise if both report unknown, report unknown. */
ab865e6e 959 return 1;
9b288516
DB
960}
961
962int transport_push(struct transport *transport,
07436e43 963 int refspec_nr, const char **refspec, int flags,
bb8cccd0 964 int *nonfastforward)
9b288516 965{
bb8cccd0 966 *nonfastforward = 0;
64fcef2d
DB
967 verify_remote_names(refspec_nr, refspec);
968
61b075bd 969 if (transport->push) {
64fcef2d 970 return transport->push(transport, refspec_nr, refspec, flags);
61b075bd 971 } else if (transport->push_refs) {
64fcef2d
DB
972 struct ref *remote_refs =
973 transport->get_refs_list(transport, 1);
64fcef2d
DB
974 struct ref *local_refs = get_local_heads();
975 int match_flags = MATCH_REFS_NONE;
976 int verbose = flags & TRANSPORT_PUSH_VERBOSE;
481c7a6d 977 int quiet = flags & TRANSPORT_PUSH_QUIET;
1965ff74 978 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
64fcef2d
DB
979 int ret;
980
981 if (flags & TRANSPORT_PUSH_ALL)
982 match_flags |= MATCH_REFS_ALL;
983 if (flags & TRANSPORT_PUSH_MIRROR)
984 match_flags |= MATCH_REFS_MIRROR;
985
6d2bf96e 986 if (match_refs(local_refs, &remote_refs,
64fcef2d
DB
987 refspec_nr, refspec, match_flags)) {
988 return -1;
989 }
990
991 ret = transport->push_refs(transport, remote_refs, flags);
992
481c7a6d
JK
993 if (!quiet || push_had_errors(remote_refs))
994 print_push_status(transport->url, remote_refs,
6ffd7812
JH
995 verbose | porcelain, porcelain,
996 nonfastforward);
64fcef2d
DB
997
998 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
999 struct ref *ref;
1000 for (ref = remote_refs; ref; ref = ref->next)
1001 update_tracking_ref(transport->remote, ref, verbose);
1002 }
1003
2e5ed5f2 1004 if (!quiet && !ret && !refs_pushed(remote_refs))
64fcef2d
DB
1005 fprintf(stderr, "Everything up-to-date\n");
1006 return ret;
1007 }
1008 return 1;
9b288516
DB
1009}
1010
4577370e 1011const struct ref *transport_get_remote_refs(struct transport *transport)
c29727d5
DB
1012{
1013 if (!transport->remote_refs)
64fcef2d 1014 transport->remote_refs = transport->get_refs_list(transport, 0);
61b075bd 1015
c29727d5
DB
1016 return transport->remote_refs;
1017}
1018
37148311 1019int transport_fetch_refs(struct transport *transport, struct ref *refs)
c29727d5 1020{
425b1393 1021 int rc;
86386829 1022 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
37148311
DB
1023 struct ref **heads = NULL;
1024 struct ref *rm;
c29727d5
DB
1025
1026 for (rm = refs; rm; rm = rm->next) {
86386829 1027 nr_refs++;
c29727d5 1028 if (rm->peer_ref &&
37148311 1029 !is_null_sha1(rm->old_sha1) &&
c29727d5
DB
1030 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1031 continue;
7a2bff45 1032 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
425b1393 1033 heads[nr_heads++] = rm;
c29727d5
DB
1034 }
1035
86386829
NP
1036 if (!nr_heads) {
1037 /*
1038 * When deepening of a shallow repository is requested,
1039 * then local and remote refs are likely to still be equal.
1040 * Just feed them all to the fetch method in that case.
1041 * This condition shouldn't be met in a non-deepening fetch
1042 * (see builtin-fetch.c:quickfetch()).
1043 */
1044 heads = xmalloc(nr_refs * sizeof(*heads));
1045 for (rm = refs; rm; rm = rm->next)
1046 heads[nr_heads++] = rm;
1047 }
1048
824d5776 1049 rc = transport->fetch(transport, nr_heads, heads);
61b075bd 1050
c29727d5 1051 free(heads);
425b1393 1052 return rc;
c29727d5
DB
1053}
1054
1788c39c
SP
1055void transport_unlock_pack(struct transport *transport)
1056{
1057 if (transport->pack_lockfile) {
691f1a28 1058 unlink_or_warn(transport->pack_lockfile);
1788c39c
SP
1059 free(transport->pack_lockfile);
1060 transport->pack_lockfile = NULL;
1061 }
1062}
1063
9b288516
DB
1064int transport_disconnect(struct transport *transport)
1065{
1066 int ret = 0;
824d5776
SP
1067 if (transport->disconnect)
1068 ret = transport->disconnect(transport);
9b288516
DB
1069 free(transport);
1070 return ret;
1071}
47abd85b
AE
1072
1073/*
1074 * Strip username (and password) from an url and return
1075 * it in a newly allocated string.
1076 */
1077char *transport_anonymize_url(const char *url)
1078{
1079 char *anon_url, *scheme_prefix, *anon_part;
1080 size_t anon_len, prefix_len = 0;
1081
1082 anon_part = strchr(url, '@');
1083 if (is_local(url) || !anon_part)
1084 goto literal_copy;
1085
1086 anon_len = strlen(++anon_part);
1087 scheme_prefix = strstr(url, "://");
1088 if (!scheme_prefix) {
1089 if (!strchr(anon_part, ':'))
1090 /* cannot be "me@there:/path/name" */
1091 goto literal_copy;
1092 } else {
1093 const char *cp;
1094 /* make sure scheme is reasonable */
1095 for (cp = url; cp < scheme_prefix; cp++) {
1096 switch (*cp) {
1097 /* RFC 1738 2.1 */
1098 case '+': case '.': case '-':
1099 break; /* ok */
1100 default:
1101 if (isalnum(*cp))
1102 break;
1103 /* it isn't */
1104 goto literal_copy;
1105 }
1106 }
1107 /* @ past the first slash does not count */
1108 cp = strchr(scheme_prefix + 3, '/');
1109 if (cp && cp < anon_part)
1110 goto literal_copy;
1111 prefix_len = scheme_prefix - url + 3;
1112 }
1113 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1114 memcpy(anon_url, url, prefix_len);
1115 memcpy(anon_url + prefix_len, anon_part, anon_len);
1116 return anon_url;
1117literal_copy:
1118 return xstrdup(url);
1119}