include agent identifier in capability string
[git/git.git] / builtin / send-pack.c
1 #include "builtin.h"
2 #include "commit.h"
3 #include "refs.h"
4 #include "pkt-line.h"
5 #include "sideband.h"
6 #include "run-command.h"
7 #include "remote.h"
8 #include "send-pack.h"
9 #include "quote.h"
10 #include "transport.h"
11 #include "version.h"
12
13 static const char send_pack_usage[] =
14 "git send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
15 " --all and explicit <ref> specification are mutually exclusive.";
16
17 static struct send_pack_args args;
18
19 static int feed_object(const unsigned char *sha1, int fd, int negative)
20 {
21 char buf[42];
22
23 if (negative && !has_sha1_file(sha1))
24 return 1;
25
26 memcpy(buf + negative, sha1_to_hex(sha1), 40);
27 if (negative)
28 buf[0] = '^';
29 buf[40 + negative] = '\n';
30 return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs");
31 }
32
33 /*
34 * Make a pack stream and spit it out into file descriptor fd
35 */
36 static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args)
37 {
38 /*
39 * The child becomes pack-objects --revs; we feed
40 * the revision parameters to it via its stdin and
41 * let its stdout go back to the other end.
42 */
43 const char *argv[] = {
44 "pack-objects",
45 "--all-progress-implied",
46 "--revs",
47 "--stdout",
48 NULL,
49 NULL,
50 NULL,
51 NULL,
52 NULL,
53 };
54 struct child_process po;
55 int i;
56
57 i = 4;
58 if (args->use_thin_pack)
59 argv[i++] = "--thin";
60 if (args->use_ofs_delta)
61 argv[i++] = "--delta-base-offset";
62 if (args->quiet || !args->progress)
63 argv[i++] = "-q";
64 if (args->progress)
65 argv[i++] = "--progress";
66 memset(&po, 0, sizeof(po));
67 po.argv = argv;
68 po.in = -1;
69 po.out = args->stateless_rpc ? -1 : fd;
70 po.git_cmd = 1;
71 if (start_command(&po))
72 die_errno("git pack-objects failed");
73
74 /*
75 * We feed the pack-objects we just spawned with revision
76 * parameters by writing to the pipe.
77 */
78 for (i = 0; i < extra->nr; i++)
79 if (!feed_object(extra->array[i], po.in, 1))
80 break;
81
82 while (refs) {
83 if (!is_null_sha1(refs->old_sha1) &&
84 !feed_object(refs->old_sha1, po.in, 1))
85 break;
86 if (!is_null_sha1(refs->new_sha1) &&
87 !feed_object(refs->new_sha1, po.in, 0))
88 break;
89 refs = refs->next;
90 }
91
92 close(po.in);
93
94 if (args->stateless_rpc) {
95 char *buf = xmalloc(LARGE_PACKET_MAX);
96 while (1) {
97 ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
98 if (n <= 0)
99 break;
100 send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
101 }
102 free(buf);
103 close(po.out);
104 po.out = -1;
105 }
106
107 if (finish_command(&po))
108 return -1;
109 return 0;
110 }
111
112 static int receive_status(int in, struct ref *refs)
113 {
114 struct ref *hint;
115 char line[1000];
116 int ret = 0;
117 int len = packet_read_line(in, line, sizeof(line));
118 if (len < 10 || memcmp(line, "unpack ", 7))
119 return error("did not receive remote status");
120 if (memcmp(line, "unpack ok\n", 10)) {
121 char *p = line + strlen(line) - 1;
122 if (*p == '\n')
123 *p = '\0';
124 error("unpack failed: %s", line + 7);
125 ret = -1;
126 }
127 hint = NULL;
128 while (1) {
129 char *refname;
130 char *msg;
131 len = packet_read_line(in, line, sizeof(line));
132 if (!len)
133 break;
134 if (len < 3 ||
135 (memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) {
136 fprintf(stderr, "protocol error: %s\n", line);
137 ret = -1;
138 break;
139 }
140
141 line[strlen(line)-1] = '\0';
142 refname = line + 3;
143 msg = strchr(refname, ' ');
144 if (msg)
145 *msg++ = '\0';
146
147 /* first try searching at our hint, falling back to all refs */
148 if (hint)
149 hint = find_ref_by_name(hint, refname);
150 if (!hint)
151 hint = find_ref_by_name(refs, refname);
152 if (!hint) {
153 warning("remote reported status on unknown ref: %s",
154 refname);
155 continue;
156 }
157 if (hint->status != REF_STATUS_EXPECTING_REPORT) {
158 warning("remote reported status on unexpected ref: %s",
159 refname);
160 continue;
161 }
162
163 if (line[0] == 'o' && line[1] == 'k')
164 hint->status = REF_STATUS_OK;
165 else {
166 hint->status = REF_STATUS_REMOTE_REJECT;
167 ret = -1;
168 }
169 if (msg)
170 hint->remote_status = xstrdup(msg);
171 /* start our next search from the next ref */
172 hint = hint->next;
173 }
174 return ret;
175 }
176
177 static void print_helper_status(struct ref *ref)
178 {
179 struct strbuf buf = STRBUF_INIT;
180
181 for (; ref; ref = ref->next) {
182 const char *msg = NULL;
183 const char *res;
184
185 switch(ref->status) {
186 case REF_STATUS_NONE:
187 res = "error";
188 msg = "no match";
189 break;
190
191 case REF_STATUS_OK:
192 res = "ok";
193 break;
194
195 case REF_STATUS_UPTODATE:
196 res = "ok";
197 msg = "up to date";
198 break;
199
200 case REF_STATUS_REJECT_NONFASTFORWARD:
201 res = "error";
202 msg = "non-fast forward";
203 break;
204
205 case REF_STATUS_REJECT_NODELETE:
206 case REF_STATUS_REMOTE_REJECT:
207 res = "error";
208 break;
209
210 case REF_STATUS_EXPECTING_REPORT:
211 default:
212 continue;
213 }
214
215 strbuf_reset(&buf);
216 strbuf_addf(&buf, "%s %s", res, ref->name);
217 if (ref->remote_status)
218 msg = ref->remote_status;
219 if (msg) {
220 strbuf_addch(&buf, ' ');
221 quote_two_c_style(&buf, "", msg, 0);
222 }
223 strbuf_addch(&buf, '\n');
224
225 safe_write(1, buf.buf, buf.len);
226 }
227 strbuf_release(&buf);
228 }
229
230 static int sideband_demux(int in, int out, void *data)
231 {
232 int *fd = data, ret;
233 #ifdef NO_PTHREADS
234 close(fd[1]);
235 #endif
236 ret = recv_sideband("send-pack", fd[0], out);
237 close(out);
238 return ret;
239 }
240
241 int send_pack(struct send_pack_args *args,
242 int fd[], struct child_process *conn,
243 struct ref *remote_refs,
244 struct extra_have_objects *extra_have)
245 {
246 int in = fd[0];
247 int out = fd[1];
248 struct strbuf req_buf = STRBUF_INIT;
249 struct ref *ref;
250 int new_refs;
251 int allow_deleting_refs = 0;
252 int status_report = 0;
253 int use_sideband = 0;
254 int quiet_supported = 0;
255 unsigned cmds_sent = 0;
256 int ret;
257 struct async demux;
258
259 /* Does the other end support the reporting? */
260 if (server_supports("report-status"))
261 status_report = 1;
262 if (server_supports("delete-refs"))
263 allow_deleting_refs = 1;
264 if (server_supports("ofs-delta"))
265 args->use_ofs_delta = 1;
266 if (server_supports("side-band-64k"))
267 use_sideband = 1;
268 if (server_supports("quiet"))
269 quiet_supported = 1;
270
271 if (!remote_refs) {
272 fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
273 "Perhaps you should specify a branch such as 'master'.\n");
274 return 0;
275 }
276
277 /*
278 * Finally, tell the other end!
279 */
280 new_refs = 0;
281 for (ref = remote_refs; ref; ref = ref->next) {
282 if (!ref->peer_ref && !args->send_mirror)
283 continue;
284
285 /* Check for statuses set by set_ref_status_for_push() */
286 switch (ref->status) {
287 case REF_STATUS_REJECT_NONFASTFORWARD:
288 case REF_STATUS_UPTODATE:
289 continue;
290 default:
291 ; /* do nothing */
292 }
293
294 if (ref->deletion && !allow_deleting_refs) {
295 ref->status = REF_STATUS_REJECT_NODELETE;
296 continue;
297 }
298
299 if (!ref->deletion)
300 new_refs++;
301
302 if (args->dry_run) {
303 ref->status = REF_STATUS_OK;
304 } else {
305 char *old_hex = sha1_to_hex(ref->old_sha1);
306 char *new_hex = sha1_to_hex(ref->new_sha1);
307 int quiet = quiet_supported && (args->quiet || !args->progress);
308
309 if (!cmds_sent && (status_report || use_sideband || args->quiet)) {
310 packet_buf_write(&req_buf,
311 "%s %s %s%c%s%s%s agent=%s",
312 old_hex, new_hex, ref->name, 0,
313 status_report ? " report-status" : "",
314 use_sideband ? " side-band-64k" : "",
315 quiet ? " quiet" : "",
316 git_user_agent_sanitized());
317 }
318 else
319 packet_buf_write(&req_buf, "%s %s %s",
320 old_hex, new_hex, ref->name);
321 ref->status = status_report ?
322 REF_STATUS_EXPECTING_REPORT :
323 REF_STATUS_OK;
324 cmds_sent++;
325 }
326 }
327
328 if (args->stateless_rpc) {
329 if (!args->dry_run && cmds_sent) {
330 packet_buf_flush(&req_buf);
331 send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
332 }
333 } else {
334 safe_write(out, req_buf.buf, req_buf.len);
335 packet_flush(out);
336 }
337 strbuf_release(&req_buf);
338
339 if (use_sideband && cmds_sent) {
340 memset(&demux, 0, sizeof(demux));
341 demux.proc = sideband_demux;
342 demux.data = fd;
343 demux.out = -1;
344 if (start_async(&demux))
345 die("send-pack: unable to fork off sideband demultiplexer");
346 in = demux.out;
347 }
348
349 if (new_refs && cmds_sent) {
350 if (pack_objects(out, remote_refs, extra_have, args) < 0) {
351 for (ref = remote_refs; ref; ref = ref->next)
352 ref->status = REF_STATUS_NONE;
353 if (args->stateless_rpc)
354 close(out);
355 if (git_connection_is_socket(conn))
356 shutdown(fd[0], SHUT_WR);
357 if (use_sideband)
358 finish_async(&demux);
359 return -1;
360 }
361 }
362 if (args->stateless_rpc && cmds_sent)
363 packet_flush(out);
364
365 if (status_report && cmds_sent)
366 ret = receive_status(in, remote_refs);
367 else
368 ret = 0;
369 if (args->stateless_rpc)
370 packet_flush(out);
371
372 if (use_sideband && cmds_sent) {
373 if (finish_async(&demux)) {
374 error("error in sideband demultiplexer");
375 ret = -1;
376 }
377 close(demux.out);
378 }
379
380 if (ret < 0)
381 return ret;
382
383 if (args->porcelain)
384 return 0;
385
386 for (ref = remote_refs; ref; ref = ref->next) {
387 switch (ref->status) {
388 case REF_STATUS_NONE:
389 case REF_STATUS_UPTODATE:
390 case REF_STATUS_OK:
391 break;
392 default:
393 return -1;
394 }
395 }
396 return 0;
397 }
398
399 int cmd_send_pack(int argc, const char **argv, const char *prefix)
400 {
401 int i, nr_refspecs = 0;
402 const char **refspecs = NULL;
403 const char *remote_name = NULL;
404 struct remote *remote = NULL;
405 const char *dest = NULL;
406 int fd[2];
407 struct child_process *conn;
408 struct extra_have_objects extra_have;
409 struct ref *remote_refs, *local_refs;
410 int ret;
411 int helper_status = 0;
412 int send_all = 0;
413 const char *receivepack = "git-receive-pack";
414 int flags;
415 int nonfastforward = 0;
416 int progress = -1;
417
418 argv++;
419 for (i = 1; i < argc; i++, argv++) {
420 const char *arg = *argv;
421
422 if (*arg == '-') {
423 if (!prefixcmp(arg, "--receive-pack=")) {
424 receivepack = arg + 15;
425 continue;
426 }
427 if (!prefixcmp(arg, "--exec=")) {
428 receivepack = arg + 7;
429 continue;
430 }
431 if (!prefixcmp(arg, "--remote=")) {
432 remote_name = arg + 9;
433 continue;
434 }
435 if (!strcmp(arg, "--all")) {
436 send_all = 1;
437 continue;
438 }
439 if (!strcmp(arg, "--dry-run")) {
440 args.dry_run = 1;
441 continue;
442 }
443 if (!strcmp(arg, "--mirror")) {
444 args.send_mirror = 1;
445 continue;
446 }
447 if (!strcmp(arg, "--force")) {
448 args.force_update = 1;
449 continue;
450 }
451 if (!strcmp(arg, "--quiet")) {
452 args.quiet = 1;
453 continue;
454 }
455 if (!strcmp(arg, "--verbose")) {
456 args.verbose = 1;
457 continue;
458 }
459 if (!strcmp(arg, "--progress")) {
460 progress = 1;
461 continue;
462 }
463 if (!strcmp(arg, "--no-progress")) {
464 progress = 0;
465 continue;
466 }
467 if (!strcmp(arg, "--thin")) {
468 args.use_thin_pack = 1;
469 continue;
470 }
471 if (!strcmp(arg, "--stateless-rpc")) {
472 args.stateless_rpc = 1;
473 continue;
474 }
475 if (!strcmp(arg, "--helper-status")) {
476 helper_status = 1;
477 continue;
478 }
479 usage(send_pack_usage);
480 }
481 if (!dest) {
482 dest = arg;
483 continue;
484 }
485 refspecs = (const char **) argv;
486 nr_refspecs = argc - i;
487 break;
488 }
489 if (!dest)
490 usage(send_pack_usage);
491 /*
492 * --all and --mirror are incompatible; neither makes sense
493 * with any refspecs.
494 */
495 if ((refspecs && (send_all || args.send_mirror)) ||
496 (send_all && args.send_mirror))
497 usage(send_pack_usage);
498
499 if (remote_name) {
500 remote = remote_get(remote_name);
501 if (!remote_has_url(remote, dest)) {
502 die("Destination %s is not a uri for %s",
503 dest, remote_name);
504 }
505 }
506
507 if (progress == -1)
508 progress = !args.quiet && isatty(2);
509 args.progress = progress;
510
511 if (args.stateless_rpc) {
512 conn = NULL;
513 fd[0] = 0;
514 fd[1] = 1;
515 } else {
516 conn = git_connect(fd, dest, receivepack,
517 args.verbose ? CONNECT_VERBOSE : 0);
518 }
519
520 memset(&extra_have, 0, sizeof(extra_have));
521
522 get_remote_heads(fd[0], &remote_refs, REF_NORMAL, &extra_have);
523
524 transport_verify_remote_names(nr_refspecs, refspecs);
525
526 local_refs = get_local_heads();
527
528 flags = MATCH_REFS_NONE;
529
530 if (send_all)
531 flags |= MATCH_REFS_ALL;
532 if (args.send_mirror)
533 flags |= MATCH_REFS_MIRROR;
534
535 /* match them up */
536 if (match_push_refs(local_refs, &remote_refs, nr_refspecs, refspecs, flags))
537 return -1;
538
539 set_ref_status_for_push(remote_refs, args.send_mirror,
540 args.force_update);
541
542 ret = send_pack(&args, fd, conn, remote_refs, &extra_have);
543
544 if (helper_status)
545 print_helper_status(remote_refs);
546
547 close(fd[1]);
548 close(fd[0]);
549
550 ret |= finish_connect(conn);
551
552 if (!helper_status)
553 transport_print_push_status(dest, remote_refs, args.verbose, 0, &nonfastforward);
554
555 if (!args.dry_run && remote) {
556 struct ref *ref;
557 for (ref = remote_refs; ref; ref = ref->next)
558 transport_update_tracking_ref(remote, ref, args.verbose);
559 }
560
561 if (!ret && !transport_refs_pushed(remote_refs))
562 fprintf(stderr, "Everything up-to-date\n");
563
564 return ret;
565 }