6 #include "run-command.h"
10 static const char send_pack_usage[] =
11 "git send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
12 " --all and explicit <ref> specification are mutually exclusive.";
14 static struct send_pack_args args = {
15 /* .receivepack = */ "git-receive-pack",
19 * Make a pack stream and spit it out into file descriptor fd
21 static int pack_objects(int fd, struct ref *refs)
24 * The child becomes pack-objects --revs; we feed
25 * the revision parameters to it via its stdin and
26 * let its stdout go back to the other end.
28 const char *argv[] = {
36 struct child_process po;
38 if (args.use_thin_pack)
40 memset(&po, 0, sizeof(po));
45 if (start_command(&po))
46 die("git pack-objects failed (%s)", strerror(errno));
49 * We feed the pack-objects we just spawned with revision
50 * parameters by writing to the pipe.
55 if (!is_null_sha1(refs->old_sha1) &&
56 has_sha1_file(refs->old_sha1)) {
57 memcpy(buf + 1, sha1_to_hex(refs->old_sha1), 40);
60 if (!write_or_whine(po.in, buf, 42,
61 "send-pack: send refs"))
64 if (!is_null_sha1(refs->new_sha1)) {
65 memcpy(buf, sha1_to_hex(refs->new_sha1), 40);
67 if (!write_or_whine(po.in, buf, 41,
68 "send-pack: send refs"))
75 if (finish_command(&po))
76 return error("pack-objects died with strange error");
80 static void unmark_and_free(struct commit_list *list, unsigned int mark)
83 struct commit_list *temp = list;
84 temp->item->object.flags &= ~mark;
90 static int ref_newer(const unsigned char *new_sha1,
91 const unsigned char *old_sha1)
94 struct commit *old, *new;
95 struct commit_list *list, *used;
98 /* Both new and old must be commit-ish and new is descendant of
99 * old. Otherwise we require --force.
101 o = deref_tag(parse_object(old_sha1), NULL, 0);
102 if (!o || o->type != OBJ_COMMIT)
104 old = (struct commit *) o;
106 o = deref_tag(parse_object(new_sha1), NULL, 0);
107 if (!o || o->type != OBJ_COMMIT)
109 new = (struct commit *) o;
111 if (parse_commit(new) < 0)
115 commit_list_insert(new, &list);
117 new = pop_most_recent_commit(&list, 1);
118 commit_list_insert(new, &used);
124 unmark_and_free(list, 1);
125 unmark_and_free(used, 1);
129 static struct ref *local_refs, **local_tail;
130 static struct ref *remote_refs, **remote_tail;
132 static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
137 /* we already know it starts with refs/ to get here */
138 if (check_ref_format(refname + 5))
141 len = strlen(refname) + 1;
142 ref = xcalloc(1, sizeof(*ref) + len);
143 hashcpy(ref->new_sha1, sha1);
144 memcpy(ref->name, refname, len);
146 local_tail = &ref->next;
150 static void get_local_heads(void)
152 local_tail = &local_refs;
153 for_each_ref(one_local_ref, NULL);
156 static int receive_status(int in, struct ref *refs)
161 int len = packet_read_line(in, line, sizeof(line));
162 if (len < 10 || memcmp(line, "unpack ", 7))
163 return error("did not receive remote status");
164 if (memcmp(line, "unpack ok\n", 10)) {
165 char *p = line + strlen(line) - 1;
168 error("unpack failed: %s", line + 7);
175 len = packet_read_line(in, line, sizeof(line));
179 (memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) {
180 fprintf(stderr, "protocol error: %s\n", line);
185 line[strlen(line)-1] = '\0';
187 msg = strchr(refname, ' ');
191 /* first try searching at our hint, falling back to all refs */
193 hint = find_ref_by_name(hint, refname);
195 hint = find_ref_by_name(refs, refname);
197 warning("remote reported status on unknown ref: %s",
201 if (hint->status != REF_STATUS_EXPECTING_REPORT) {
202 warning("remote reported status on unexpected ref: %s",
207 if (line[0] == 'o' && line[1] == 'k')
208 hint->status = REF_STATUS_OK;
210 hint->status = REF_STATUS_REMOTE_REJECT;
214 hint->remote_status = xstrdup(msg);
215 /* start our next search from the next ref */
221 static void update_tracking_ref(struct remote *remote, struct ref *ref)
225 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
231 if (!remote_find_tracking(remote, &rs)) {
233 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
235 delete_ref(rs.dst, NULL, 0);
237 update_ref("update by push", rs.dst,
238 ref->new_sha1, NULL, 0, 0);
243 static const char *prettify_ref(const struct ref *ref)
245 const char *name = ref->name;
247 !prefixcmp(name, "refs/heads/") ? 11 :
248 !prefixcmp(name, "refs/tags/") ? 10 :
249 !prefixcmp(name, "refs/remotes/") ? 13 :
253 #define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
255 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg)
257 fprintf(stderr, " %c %-*s ", flag, SUMMARY_WIDTH, summary);
259 fprintf(stderr, "%s -> %s", prettify_ref(from), prettify_ref(to));
261 fputs(prettify_ref(to), stderr);
270 static const char *status_abbrev(unsigned char sha1[20])
272 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
275 static void print_ok_ref_status(struct ref *ref)
278 print_ref_status('-', "[deleted]", ref, NULL, NULL);
279 else if (is_null_sha1(ref->old_sha1))
280 print_ref_status('*',
281 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
283 ref, ref->peer_ref, NULL);
289 strcpy(quickref, status_abbrev(ref->old_sha1));
290 if (ref->nonfastforward) {
291 strcat(quickref, "...");
293 msg = "forced update";
295 strcat(quickref, "..");
299 strcat(quickref, status_abbrev(ref->new_sha1));
301 print_ref_status(type, quickref, ref, ref->peer_ref, msg);
305 static int print_one_push_status(struct ref *ref, const char *dest, int count)
308 fprintf(stderr, "To %s\n", dest);
310 switch(ref->status) {
311 case REF_STATUS_NONE:
312 print_ref_status('X', "[no match]", ref, NULL, NULL);
314 case REF_STATUS_REJECT_NODELETE:
315 print_ref_status('!', "[rejected]", ref, NULL,
316 "remote does not support deleting refs");
318 case REF_STATUS_UPTODATE:
319 print_ref_status('=', "[up to date]", ref,
320 ref->peer_ref, NULL);
322 case REF_STATUS_REJECT_NONFASTFORWARD:
323 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
326 case REF_STATUS_REMOTE_REJECT:
327 print_ref_status('!', "[remote rejected]", ref,
328 ref->deletion ? NULL : ref->peer_ref,
331 case REF_STATUS_EXPECTING_REPORT:
332 print_ref_status('!', "[remote failure]", ref,
333 ref->deletion ? NULL : ref->peer_ref,
334 "remote failed to report status");
337 print_ok_ref_status(ref);
344 static void print_push_status(const char *dest, struct ref *refs)
350 for (ref = refs; ref; ref = ref->next)
351 if (ref->status == REF_STATUS_UPTODATE)
352 n += print_one_push_status(ref, dest, n);
355 for (ref = refs; ref; ref = ref->next)
356 if (ref->status == REF_STATUS_OK)
357 n += print_one_push_status(ref, dest, n);
359 for (ref = refs; ref; ref = ref->next) {
360 if (ref->status != REF_STATUS_NONE &&
361 ref->status != REF_STATUS_UPTODATE &&
362 ref->status != REF_STATUS_OK)
363 n += print_one_push_status(ref, dest, n);
367 static int refs_pushed(struct ref *ref)
369 for (; ref; ref = ref->next) {
370 switch(ref->status) {
371 case REF_STATUS_NONE:
372 case REF_STATUS_UPTODATE:
381 static int do_send_pack(int in, int out, struct remote *remote, const char *dest, int nr_refspec, const char **refspec)
385 int ask_for_status_report = 0;
386 int allow_deleting_refs = 0;
387 int expect_status_report = 0;
388 int flags = MATCH_REFS_NONE;
392 flags |= MATCH_REFS_ALL;
393 if (args.send_mirror)
394 flags |= MATCH_REFS_MIRROR;
396 /* No funny business with the matcher */
397 remote_tail = get_remote_heads(in, &remote_refs, 0, NULL, REF_NORMAL);
400 /* Does the other end support the reporting? */
401 if (server_supports("report-status"))
402 ask_for_status_report = 1;
403 if (server_supports("delete-refs"))
404 allow_deleting_refs = 1;
408 remote_tail = &remote_refs;
409 if (match_refs(local_refs, remote_refs, &remote_tail,
410 nr_refspec, refspec, flags)) {
416 fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
417 "Perhaps you should specify a branch such as 'master'.\n");
423 * Finally, tell the other end!
426 for (ref = remote_refs; ref; ref = ref->next) {
429 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
430 else if (!args.send_mirror)
433 ref->deletion = is_null_sha1(ref->new_sha1);
434 if (ref->deletion && !allow_deleting_refs) {
435 ref->status = REF_STATUS_REJECT_NODELETE;
438 if (!ref->deletion &&
439 !hashcmp(ref->old_sha1, ref->new_sha1)) {
440 ref->status = REF_STATUS_UPTODATE;
444 /* This part determines what can overwrite what.
447 * (0) you can always use --force or +A:B notation to
448 * selectively force individual ref pairs.
450 * (1) if the old thing does not exist, it is OK.
452 * (2) if you do not have the old thing, you are not allowed
453 * to overwrite it; you would not know what you are losing
456 * (3) if both new and old are commit-ish, and new is a
457 * descendant of old, it is OK.
459 * (4) regardless of all of the above, removing :B is
463 ref->nonfastforward =
465 !is_null_sha1(ref->old_sha1) &&
466 (!has_sha1_file(ref->old_sha1)
467 || !ref_newer(ref->new_sha1, ref->old_sha1));
469 if (ref->nonfastforward && !ref->force && !args.force_update) {
470 ref->status = REF_STATUS_REJECT_NONFASTFORWARD;
478 char *old_hex = sha1_to_hex(ref->old_sha1);
479 char *new_hex = sha1_to_hex(ref->new_sha1);
481 if (ask_for_status_report) {
482 packet_write(out, "%s %s %s%c%s",
483 old_hex, new_hex, ref->name, 0,
485 ask_for_status_report = 0;
486 expect_status_report = 1;
489 packet_write(out, "%s %s %s",
490 old_hex, new_hex, ref->name);
492 ref->status = expect_status_report ?
493 REF_STATUS_EXPECTING_REPORT :
498 if (new_refs && !args.dry_run) {
499 if (pack_objects(out, remote_refs) < 0)
505 if (expect_status_report)
506 ret = receive_status(in, remote_refs);
510 print_push_status(dest, remote_refs);
512 if (!args.dry_run && remote) {
513 for (ref = remote_refs; ref; ref = ref->next)
514 update_tracking_ref(remote, ref);
517 if (!refs_pushed(remote_refs))
518 fprintf(stderr, "Everything up-to-date\n");
521 for (ref = remote_refs; ref; ref = ref->next) {
522 switch (ref->status) {
523 case REF_STATUS_NONE:
524 case REF_STATUS_UPTODATE:
534 static void verify_remote_names(int nr_heads, const char **heads)
538 for (i = 0; i < nr_heads; i++) {
539 const char *local = heads[i];
540 const char *remote = strrchr(heads[i], ':');
545 /* A matching refspec is okay. */
546 if (remote == local && remote[1] == '\0')
549 remote = remote ? (remote + 1) : local;
550 switch (check_ref_format(remote)) {
552 case CHECK_REF_FORMAT_ONELEVEL:
553 /* ok but a single level -- that is fine for
556 case CHECK_REF_FORMAT_WILDCARD:
557 /* ok but ends with a pattern-match character */
560 die("remote part of refspec is not a valid name in %s",
565 int cmd_send_pack(int argc, const char **argv, const char *prefix)
568 const char **heads = NULL;
569 const char *remote_name = NULL;
570 struct remote *remote = NULL;
571 const char *dest = NULL;
574 for (i = 1; i < argc; i++, argv++) {
575 const char *arg = *argv;
578 if (!prefixcmp(arg, "--receive-pack=")) {
579 args.receivepack = arg + 15;
582 if (!prefixcmp(arg, "--exec=")) {
583 args.receivepack = arg + 7;
586 if (!prefixcmp(arg, "--remote=")) {
587 remote_name = arg + 9;
590 if (!strcmp(arg, "--all")) {
594 if (!strcmp(arg, "--dry-run")) {
598 if (!strcmp(arg, "--mirror")) {
599 args.send_mirror = 1;
602 if (!strcmp(arg, "--force")) {
603 args.force_update = 1;
606 if (!strcmp(arg, "--verbose")) {
610 if (!strcmp(arg, "--thin")) {
611 args.use_thin_pack = 1;
614 usage(send_pack_usage);
620 heads = (const char **) argv;
625 usage(send_pack_usage);
627 * --all and --mirror are incompatible; neither makes sense
630 if ((heads && (args.send_all || args.send_mirror)) ||
631 (args.send_all && args.send_mirror))
632 usage(send_pack_usage);
635 remote = remote_get(remote_name);
636 if (!remote_has_url(remote, dest)) {
637 die("Destination %s is not a uri for %s",
642 return send_pack(&args, dest, remote, nr_heads, heads);
645 int send_pack(struct send_pack_args *my_args,
646 const char *dest, struct remote *remote,
647 int nr_heads, const char **heads)
650 struct child_process *conn;
652 memcpy(&args, my_args, sizeof(args));
654 verify_remote_names(nr_heads, heads);
656 conn = git_connect(fd, dest, args.receivepack, args.verbose ? CONNECT_VERBOSE : 0);
657 ret = do_send_pack(fd[0], fd[1], remote, dest, nr_heads, heads);
659 /* do_send_pack always closes fd[1] */
660 ret |= finish_connect(conn);