6 #include "run-command.h"
10 #include "transport.h"
12 static const char send_pack_usage[] =
13 "git send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
14 " --all and explicit <ref> specification are mutually exclusive.";
16 static struct send_pack_args args;
18 static int feed_object(const unsigned char *sha1, int fd, int negative)
22 if (negative && !has_sha1_file(sha1))
25 memcpy(buf + negative, sha1_to_hex(sha1), 40);
28 buf[40 + negative] = '\n';
29 return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs");
33 * Make a pack stream and spit it out into file descriptor fd
35 static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args)
38 * The child becomes pack-objects --revs; we feed
39 * the revision parameters to it via its stdin and
40 * let its stdout go back to the other end.
42 const char *argv[] = {
44 "--all-progress-implied",
53 struct child_process po;
57 if (args->use_thin_pack)
59 if (args->use_ofs_delta)
60 argv[i++] = "--delta-base-offset";
64 argv[i++] = "--progress";
65 memset(&po, 0, sizeof(po));
68 po.out = args->stateless_rpc ? -1 : fd;
70 if (start_command(&po))
71 die_errno("git pack-objects failed");
74 * We feed the pack-objects we just spawned with revision
75 * parameters by writing to the pipe.
77 for (i = 0; i < extra->nr; i++)
78 if (!feed_object(extra->array[i], po.in, 1))
82 if (!is_null_sha1(refs->old_sha1) &&
83 !feed_object(refs->old_sha1, po.in, 1))
85 if (!is_null_sha1(refs->new_sha1) &&
86 !feed_object(refs->new_sha1, po.in, 0))
93 if (args->stateless_rpc) {
94 char *buf = xmalloc(LARGE_PACKET_MAX);
96 ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
99 send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
106 if (finish_command(&po))
111 static int receive_status(int in, struct ref *refs)
116 int len = packet_read_line(in, line, sizeof(line));
117 if (len < 10 || memcmp(line, "unpack ", 7))
118 return error("did not receive remote status");
119 if (memcmp(line, "unpack ok\n", 10)) {
120 char *p = line + strlen(line) - 1;
123 error("unpack failed: %s", line + 7);
130 len = packet_read_line(in, line, sizeof(line));
134 (memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) {
135 fprintf(stderr, "protocol error: %s\n", line);
140 line[strlen(line)-1] = '\0';
142 msg = strchr(refname, ' ');
146 /* first try searching at our hint, falling back to all refs */
148 hint = find_ref_by_name(hint, refname);
150 hint = find_ref_by_name(refs, refname);
152 warning("remote reported status on unknown ref: %s",
156 if (hint->status != REF_STATUS_EXPECTING_REPORT) {
157 warning("remote reported status on unexpected ref: %s",
162 if (line[0] == 'o' && line[1] == 'k')
163 hint->status = REF_STATUS_OK;
165 hint->status = REF_STATUS_REMOTE_REJECT;
169 hint->remote_status = xstrdup(msg);
170 /* start our next search from the next ref */
176 static void print_helper_status(struct ref *ref)
178 struct strbuf buf = STRBUF_INIT;
180 for (; ref; ref = ref->next) {
181 const char *msg = NULL;
184 switch(ref->status) {
185 case REF_STATUS_NONE:
194 case REF_STATUS_UPTODATE:
199 case REF_STATUS_REJECT_NONFASTFORWARD:
201 msg = "non-fast forward";
204 case REF_STATUS_REJECT_NODELETE:
205 case REF_STATUS_REMOTE_REJECT:
209 case REF_STATUS_EXPECTING_REPORT:
215 strbuf_addf(&buf, "%s %s", res, ref->name);
216 if (ref->remote_status)
217 msg = ref->remote_status;
219 strbuf_addch(&buf, ' ');
220 quote_two_c_style(&buf, "", msg, 0);
222 strbuf_addch(&buf, '\n');
224 safe_write(1, buf.buf, buf.len);
226 strbuf_release(&buf);
229 static int sideband_demux(int in, int out, void *data)
235 int ret = recv_sideband("send-pack", fd[0], out);
240 int send_pack(struct send_pack_args *args,
241 int fd[], struct child_process *conn,
242 struct ref *remote_refs,
243 struct extra_have_objects *extra_have)
247 struct strbuf req_buf = STRBUF_INIT;
250 int allow_deleting_refs = 0;
251 int status_report = 0;
252 int use_sideband = 0;
253 unsigned cmds_sent = 0;
257 /* Does the other end support the reporting? */
258 if (server_supports("report-status"))
260 if (server_supports("delete-refs"))
261 allow_deleting_refs = 1;
262 if (server_supports("ofs-delta"))
263 args->use_ofs_delta = 1;
264 if (server_supports("side-band-64k"))
268 fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
269 "Perhaps you should specify a branch such as 'master'.\n");
274 * Finally, tell the other end!
277 for (ref = remote_refs; ref; ref = ref->next) {
278 if (!ref->peer_ref && !args->send_mirror)
281 /* Check for statuses set by set_ref_status_for_push() */
282 switch (ref->status) {
283 case REF_STATUS_REJECT_NONFASTFORWARD:
284 case REF_STATUS_UPTODATE:
290 if (ref->deletion && !allow_deleting_refs) {
291 ref->status = REF_STATUS_REJECT_NODELETE;
299 ref->status = REF_STATUS_OK;
301 char *old_hex = sha1_to_hex(ref->old_sha1);
302 char *new_hex = sha1_to_hex(ref->new_sha1);
304 if (!cmds_sent && (status_report || use_sideband)) {
305 packet_buf_write(&req_buf, "%s %s %s%c%s%s",
306 old_hex, new_hex, ref->name, 0,
307 status_report ? " report-status" : "",
308 use_sideband ? " side-band-64k" : "");
311 packet_buf_write(&req_buf, "%s %s %s",
312 old_hex, new_hex, ref->name);
313 ref->status = status_report ?
314 REF_STATUS_EXPECTING_REPORT :
320 if (args->stateless_rpc) {
321 if (!args->dry_run && cmds_sent) {
322 packet_buf_flush(&req_buf);
323 send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
326 safe_write(out, req_buf.buf, req_buf.len);
329 strbuf_release(&req_buf);
331 if (use_sideband && cmds_sent) {
332 memset(&demux, 0, sizeof(demux));
333 demux.proc = sideband_demux;
336 if (start_async(&demux))
337 die("receive-pack: unable to fork off sideband demultiplexer");
341 if (new_refs && cmds_sent) {
342 if (pack_objects(out, remote_refs, extra_have, args) < 0) {
343 for (ref = remote_refs; ref; ref = ref->next)
344 ref->status = REF_STATUS_NONE;
345 if (args->stateless_rpc)
348 finish_async(&demux);
352 if (args->stateless_rpc && cmds_sent)
355 if (status_report && cmds_sent)
356 ret = receive_status(in, remote_refs);
359 if (args->stateless_rpc)
362 if (use_sideband && cmds_sent) {
363 if (finish_async(&demux)) {
364 error("error in sideband demultiplexer");
376 for (ref = remote_refs; ref; ref = ref->next) {
377 switch (ref->status) {
378 case REF_STATUS_NONE:
379 case REF_STATUS_UPTODATE:
389 int cmd_send_pack(int argc, const char **argv, const char *prefix)
391 int i, nr_refspecs = 0;
392 const char **refspecs = NULL;
393 const char *remote_name = NULL;
394 struct remote *remote = NULL;
395 const char *dest = NULL;
397 struct child_process *conn;
398 struct extra_have_objects extra_have;
399 struct ref *remote_refs, *local_refs;
401 int helper_status = 0;
403 const char *receivepack = "git-receive-pack";
405 int nonfastforward = 0;
408 for (i = 1; i < argc; i++, argv++) {
409 const char *arg = *argv;
412 if (!prefixcmp(arg, "--receive-pack=")) {
413 receivepack = arg + 15;
416 if (!prefixcmp(arg, "--exec=")) {
417 receivepack = arg + 7;
420 if (!prefixcmp(arg, "--remote=")) {
421 remote_name = arg + 9;
424 if (!strcmp(arg, "--all")) {
428 if (!strcmp(arg, "--dry-run")) {
432 if (!strcmp(arg, "--mirror")) {
433 args.send_mirror = 1;
436 if (!strcmp(arg, "--force")) {
437 args.force_update = 1;
440 if (!strcmp(arg, "--verbose")) {
444 if (!strcmp(arg, "--thin")) {
445 args.use_thin_pack = 1;
448 if (!strcmp(arg, "--stateless-rpc")) {
449 args.stateless_rpc = 1;
452 if (!strcmp(arg, "--helper-status")) {
456 usage(send_pack_usage);
462 refspecs = (const char **) argv;
463 nr_refspecs = argc - i;
467 usage(send_pack_usage);
469 * --all and --mirror are incompatible; neither makes sense
472 if ((refspecs && (send_all || args.send_mirror)) ||
473 (send_all && args.send_mirror))
474 usage(send_pack_usage);
477 remote = remote_get(remote_name);
478 if (!remote_has_url(remote, dest)) {
479 die("Destination %s is not a uri for %s",
484 if (args.stateless_rpc) {
489 conn = git_connect(fd, dest, receivepack,
490 args.verbose ? CONNECT_VERBOSE : 0);
493 memset(&extra_have, 0, sizeof(extra_have));
495 get_remote_heads(fd[0], &remote_refs, 0, NULL, REF_NORMAL,
498 transport_verify_remote_names(nr_refspecs, refspecs);
500 local_refs = get_local_heads();
502 flags = MATCH_REFS_NONE;
505 flags |= MATCH_REFS_ALL;
506 if (args.send_mirror)
507 flags |= MATCH_REFS_MIRROR;
510 if (match_refs(local_refs, &remote_refs, nr_refspecs, refspecs, flags))
513 set_ref_status_for_push(remote_refs, args.send_mirror,
516 ret = send_pack(&args, fd, conn, remote_refs, &extra_have);
519 print_helper_status(remote_refs);
524 ret |= finish_connect(conn);
527 transport_print_push_status(dest, remote_refs, args.verbose, 0, &nonfastforward);
529 if (!args.dry_run && remote) {
531 for (ref = remote_refs; ref; ref = ref->next)
532 transport_update_tracking_ref(remote, ref, args.verbose);
535 if (!ret && !transport_refs_pushed(remote_refs))
536 fprintf(stderr, "Everything up-to-date\n");