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"
12static 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.";
16static struct send_pack_args args;
18static int feed_object(const unsigned char *sha1, int fd, int negative)
20{
21 char buf[42];
22 if (negative && !has_sha1_file(sha1))
24 return 1;
25 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/*
34 * Make a pack stream and spit it out into file descriptor fd
35 */
36static 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 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 /*
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 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 close(po.in);
93 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 if (finish_command(&po))
108 return -1;
109 return 0;
110}
111static 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 line[strlen(line)-1] = '\0';
142 refname = line + 3;
143 msg = strchr(refname, ' ');
144 if (msg)
145 *msg++ = '\0';
146 /* 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 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}
176static void print_helper_status(struct ref *ref)
178{
179 struct strbuf buf = STRBUF_INIT;
180 for (; ref; ref = ref->next) {
182 const char *msg = NULL;
183 const char *res;
184 switch(ref->status) {
186 case REF_STATUS_NONE:
187 res = "error";
188 msg = "no match";
189 break;
190 case REF_STATUS_OK:
192 res = "ok";
193 break;
194 case REF_STATUS_UPTODATE:
196 res = "ok";
197 msg = "up to date";
198 break;
199 case REF_STATUS_REJECT_NONFASTFORWARD:
201 res = "error";
202 msg = "non-fast forward";
203 break;
204 case REF_STATUS_REJECT_NODELETE:
206 case REF_STATUS_REMOTE_REJECT:
207 res = "error";
208 break;
209 case REF_STATUS_EXPECTING_REPORT:
211 default:
212 continue;
213 }
214 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 safe_write(1, buf.buf, buf.len);
226 }
227 strbuf_release(&buf);
228}
229static 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}
240int 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 int agent_supported = 0;
256 unsigned cmds_sent = 0;
257 int ret;
258 struct async demux;
259 /* Does the other end support the reporting? */
261 if (server_supports("report-status"))
262 status_report = 1;
263 if (server_supports("delete-refs"))
264 allow_deleting_refs = 1;
265 if (server_supports("ofs-delta"))
266 args->use_ofs_delta = 1;
267 if (server_supports("side-band-64k"))
268 use_sideband = 1;
269 if (server_supports("quiet"))
270 quiet_supported = 1;
271 if (server_supports("agent"))
272 agent_supported = 1;
273 if (!remote_refs) {
275 fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
276 "Perhaps you should specify a branch such as 'master'.\n");
277 return 0;
278 }
279 /*
281 * Finally, tell the other end!
282 */
283 new_refs = 0;
284 for (ref = remote_refs; ref; ref = ref->next) {
285 if (!ref->peer_ref && !args->send_mirror)
286 continue;
287 /* Check for statuses set by set_ref_status_for_push() */
289 switch (ref->status) {
290 case REF_STATUS_REJECT_NONFASTFORWARD:
291 case REF_STATUS_UPTODATE:
292 continue;
293 default:
294 ; /* do nothing */
295 }
296 if (ref->deletion && !allow_deleting_refs) {
298 ref->status = REF_STATUS_REJECT_NODELETE;
299 continue;
300 }
301 if (!ref->deletion)
303 new_refs++;
304 if (args->dry_run) {
306 ref->status = REF_STATUS_OK;
307 } else {
308 char *old_hex = sha1_to_hex(ref->old_sha1);
309 char *new_hex = sha1_to_hex(ref->new_sha1);
310 int quiet = quiet_supported && (args->quiet || !args->progress);
311 if (!cmds_sent && (status_report || use_sideband ||
313 quiet || agent_supported)) {
314 packet_buf_write(&req_buf,
315 "%s %s %s%c%s%s%s%s%s",
316 old_hex, new_hex, ref->name, 0,
317 status_report ? " report-status" : "",
318 use_sideband ? " side-band-64k" : "",
319 quiet ? " quiet" : "",
320 agent_supported ? " agent=" : "",
321 agent_supported ? git_user_agent_sanitized() : ""
322 );
323 }
324 else
325 packet_buf_write(&req_buf, "%s %s %s",
326 old_hex, new_hex, ref->name);
327 ref->status = status_report ?
328 REF_STATUS_EXPECTING_REPORT :
329 REF_STATUS_OK;
330 cmds_sent++;
331 }
332 }
333 if (args->stateless_rpc) {
335 if (!args->dry_run && cmds_sent) {
336 packet_buf_flush(&req_buf);
337 send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
338 }
339 } else {
340 safe_write(out, req_buf.buf, req_buf.len);
341 packet_flush(out);
342 }
343 strbuf_release(&req_buf);
344 if (use_sideband && cmds_sent) {
346 memset(&demux, 0, sizeof(demux));
347 demux.proc = sideband_demux;
348 demux.data = fd;
349 demux.out = -1;
350 if (start_async(&demux))
351 die("send-pack: unable to fork off sideband demultiplexer");
352 in = demux.out;
353 }
354 if (new_refs && cmds_sent) {
356 if (pack_objects(out, remote_refs, extra_have, args) < 0) {
357 for (ref = remote_refs; ref; ref = ref->next)
358 ref->status = REF_STATUS_NONE;
359 if (args->stateless_rpc)
360 close(out);
361 if (git_connection_is_socket(conn))
362 shutdown(fd[0], SHUT_WR);
363 if (use_sideband)
364 finish_async(&demux);
365 return -1;
366 }
367 }
368 if (args->stateless_rpc && cmds_sent)
369 packet_flush(out);
370 if (status_report && cmds_sent)
372 ret = receive_status(in, remote_refs);
373 else
374 ret = 0;
375 if (args->stateless_rpc)
376 packet_flush(out);
377 if (use_sideband && cmds_sent) {
379 if (finish_async(&demux)) {
380 error("error in sideband demultiplexer");
381 ret = -1;
382 }
383 close(demux.out);
384 }
385 if (ret < 0)
387 return ret;
388 if (args->porcelain)
390 return 0;
391 for (ref = remote_refs; ref; ref = ref->next) {
393 switch (ref->status) {
394 case REF_STATUS_NONE:
395 case REF_STATUS_UPTODATE:
396 case REF_STATUS_OK:
397 break;
398 default:
399 return -1;
400 }
401 }
402 return 0;
403}
404int cmd_send_pack(int argc, const char **argv, const char *prefix)
406{
407 int i, nr_refspecs = 0;
408 const char **refspecs = NULL;
409 const char *remote_name = NULL;
410 struct remote *remote = NULL;
411 const char *dest = NULL;
412 int fd[2];
413 struct child_process *conn;
414 struct extra_have_objects extra_have;
415 struct ref *remote_refs, *local_refs;
416 int ret;
417 int helper_status = 0;
418 int send_all = 0;
419 const char *receivepack = "git-receive-pack";
420 int flags;
421 int nonfastforward = 0;
422 int progress = -1;
423 argv++;
425 for (i = 1; i < argc; i++, argv++) {
426 const char *arg = *argv;
427 if (*arg == '-') {
429 if (!prefixcmp(arg, "--receive-pack=")) {
430 receivepack = arg + 15;
431 continue;
432 }
433 if (!prefixcmp(arg, "--exec=")) {
434 receivepack = arg + 7;
435 continue;
436 }
437 if (!prefixcmp(arg, "--remote=")) {
438 remote_name = arg + 9;
439 continue;
440 }
441 if (!strcmp(arg, "--all")) {
442 send_all = 1;
443 continue;
444 }
445 if (!strcmp(arg, "--dry-run")) {
446 args.dry_run = 1;
447 continue;
448 }
449 if (!strcmp(arg, "--mirror")) {
450 args.send_mirror = 1;
451 continue;
452 }
453 if (!strcmp(arg, "--force")) {
454 args.force_update = 1;
455 continue;
456 }
457 if (!strcmp(arg, "--quiet")) {
458 args.quiet = 1;
459 continue;
460 }
461 if (!strcmp(arg, "--verbose")) {
462 args.verbose = 1;
463 continue;
464 }
465 if (!strcmp(arg, "--progress")) {
466 progress = 1;
467 continue;
468 }
469 if (!strcmp(arg, "--no-progress")) {
470 progress = 0;
471 continue;
472 }
473 if (!strcmp(arg, "--thin")) {
474 args.use_thin_pack = 1;
475 continue;
476 }
477 if (!strcmp(arg, "--stateless-rpc")) {
478 args.stateless_rpc = 1;
479 continue;
480 }
481 if (!strcmp(arg, "--helper-status")) {
482 helper_status = 1;
483 continue;
484 }
485 usage(send_pack_usage);
486 }
487 if (!dest) {
488 dest = arg;
489 continue;
490 }
491 refspecs = (const char **) argv;
492 nr_refspecs = argc - i;
493 break;
494 }
495 if (!dest)
496 usage(send_pack_usage);
497 /*
498 * --all and --mirror are incompatible; neither makes sense
499 * with any refspecs.
500 */
501 if ((refspecs && (send_all || args.send_mirror)) ||
502 (send_all && args.send_mirror))
503 usage(send_pack_usage);
504 if (remote_name) {
506 remote = remote_get(remote_name);
507 if (!remote_has_url(remote, dest)) {
508 die("Destination %s is not a uri for %s",
509 dest, remote_name);
510 }
511 }
512 if (progress == -1)
514 progress = !args.quiet && isatty(2);
515 args.progress = progress;
516 if (args.stateless_rpc) {
518 conn = NULL;
519 fd[0] = 0;
520 fd[1] = 1;
521 } else {
522 conn = git_connect(fd, dest, receivepack,
523 args.verbose ? CONNECT_VERBOSE : 0);
524 }
525 memset(&extra_have, 0, sizeof(extra_have));
527 get_remote_heads(fd[0], &remote_refs, REF_NORMAL, &extra_have);
529 transport_verify_remote_names(nr_refspecs, refspecs);
531 local_refs = get_local_heads();
533 flags = MATCH_REFS_NONE;
535 if (send_all)
537 flags |= MATCH_REFS_ALL;
538 if (args.send_mirror)
539 flags |= MATCH_REFS_MIRROR;
540 /* match them up */
542 if (match_push_refs(local_refs, &remote_refs, nr_refspecs, refspecs, flags))
543 return -1;
544 set_ref_status_for_push(remote_refs, args.send_mirror,
546 args.force_update);
547 ret = send_pack(&args, fd, conn, remote_refs, &extra_have);
549 if (helper_status)
551 print_helper_status(remote_refs);
552 close(fd[1]);
554 close(fd[0]);
555 ret |= finish_connect(conn);
557 if (!helper_status)
559 transport_print_push_status(dest, remote_refs, args.verbose, 0, &nonfastforward);
560 if (!args.dry_run && remote) {
562 struct ref *ref;
563 for (ref = remote_refs; ref; ref = ref->next)
564 transport_update_tracking_ref(remote, ref, args.verbose);
565 }
566 if (!ret && !transport_refs_pushed(remote_refs))
568 fprintf(stderr, "Everything up-to-date\n");
569 return ret;
571}