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Commit | Line | Data |
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61221472 | 1 | #include "cache.h" |
2a9c3fe8 | 2 | #include "commit.h" |
37fde874 | 3 | #include "tag.h" |
584c6cc9 | 4 | #include "refs.h" |
f3a3214e | 5 | #include "pkt-line.h" |
38b1c662 | 6 | #include "run-command.h" |
6b62816c | 7 | #include "remote.h" |
96249c04 | 8 | #include "send-pack.h" |
61221472 | 9 | |
2a245013 | 10 | static const char send_pack_usage[] = |
a63103ae | 11 | "git-send-pack [--all] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n" |
18bd8821 | 12 | " --all and explicit <ref> specification are mutually exclusive."; |
96249c04 DB |
13 | |
14 | static struct send_pack_args args = { | |
15 | /* .receivepack = */ "git-receive-pack", | |
16 | }; | |
61221472 | 17 | |
c727fe2a | 18 | /* |
0ae5f98c | 19 | * Make a pack stream and spit it out into file descriptor fd |
c727fe2a | 20 | */ |
0ae5f98c | 21 | static int pack_objects(int fd, struct ref *refs) |
c727fe2a | 22 | { |
38b1c662 SP |
23 | /* |
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. | |
27 | */ | |
96249c04 | 28 | const char *argv[] = { |
38b1c662 SP |
29 | "pack-objects", |
30 | "--all-progress", | |
31 | "--revs", | |
32 | "--stdout", | |
33 | NULL, | |
34 | NULL, | |
35 | }; | |
36 | struct child_process po; | |
c727fe2a | 37 | |
96249c04 DB |
38 | if (args.use_thin_pack) |
39 | argv[4] = "--thin"; | |
38b1c662 | 40 | memset(&po, 0, sizeof(po)); |
96249c04 | 41 | po.argv = argv; |
38b1c662 SP |
42 | po.in = -1; |
43 | po.out = fd; | |
44 | po.git_cmd = 1; | |
45 | if (start_command(&po)) | |
46 | die("git-pack-objects failed (%s)", strerror(errno)); | |
c727fe2a | 47 | |
0ae5f98c JH |
48 | /* |
49 | * We feed the pack-objects we just spawned with revision | |
50 | * parameters by writing to the pipe. | |
c727fe2a | 51 | */ |
c727fe2a AW |
52 | while (refs) { |
53 | char buf[42]; | |
54 | ||
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); | |
58 | buf[0] = '^'; | |
59 | buf[41] = '\n'; | |
38b1c662 | 60 | if (!write_or_whine(po.in, buf, 42, |
825cee7b AW |
61 | "send-pack: send refs")) |
62 | break; | |
c727fe2a AW |
63 | } |
64 | if (!is_null_sha1(refs->new_sha1)) { | |
65 | memcpy(buf, sha1_to_hex(refs->new_sha1), 40); | |
66 | buf[40] = '\n'; | |
38b1c662 | 67 | if (!write_or_whine(po.in, buf, 41, |
825cee7b AW |
68 | "send-pack: send refs")) |
69 | break; | |
c727fe2a AW |
70 | } |
71 | refs = refs->next; | |
72 | } | |
c727fe2a | 73 | |
38b1c662 SP |
74 | if (finish_command(&po)) |
75 | return error("pack-objects died with strange error"); | |
76 | return 0; | |
94fdb7aa | 77 | } |
e4b5c7ff | 78 | |
51b0fca0 JH |
79 | static void unmark_and_free(struct commit_list *list, unsigned int mark) |
80 | { | |
81 | while (list) { | |
82 | struct commit_list *temp = list; | |
83 | temp->item->object.flags &= ~mark; | |
84 | list = temp->next; | |
85 | free(temp); | |
86 | } | |
87 | } | |
88 | ||
37fde874 JH |
89 | static int ref_newer(const unsigned char *new_sha1, |
90 | const unsigned char *old_sha1) | |
584c6cc9 | 91 | { |
37fde874 JH |
92 | struct object *o; |
93 | struct commit *old, *new; | |
51b0fca0 JH |
94 | struct commit_list *list, *used; |
95 | int found = 0; | |
2a9c3fe8 | 96 | |
37fde874 JH |
97 | /* Both new and old must be commit-ish and new is descendant of |
98 | * old. Otherwise we require --force. | |
99 | */ | |
9534f40b | 100 | o = deref_tag(parse_object(old_sha1), NULL, 0); |
1974632c | 101 | if (!o || o->type != OBJ_COMMIT) |
584c6cc9 | 102 | return 0; |
37fde874 JH |
103 | old = (struct commit *) o; |
104 | ||
9534f40b | 105 | o = deref_tag(parse_object(new_sha1), NULL, 0); |
1974632c | 106 | if (!o || o->type != OBJ_COMMIT) |
2a9c3fe8 | 107 | return 0; |
37fde874 JH |
108 | new = (struct commit *) o; |
109 | ||
2a9c3fe8 LT |
110 | if (parse_commit(new) < 0) |
111 | return 0; | |
51b0fca0 JH |
112 | |
113 | used = list = NULL; | |
2a9c3fe8 | 114 | commit_list_insert(new, &list); |
bdf25142 LT |
115 | while (list) { |
116 | new = pop_most_recent_commit(&list, 1); | |
51b0fca0 JH |
117 | commit_list_insert(new, &used); |
118 | if (new == old) { | |
119 | found = 1; | |
120 | break; | |
121 | } | |
2a9c3fe8 | 122 | } |
51b0fca0 JH |
123 | unmark_and_free(list, 1); |
124 | unmark_and_free(used, 1); | |
125 | return found; | |
584c6cc9 LT |
126 | } |
127 | ||
f88395ac JH |
128 | static struct ref *local_refs, **local_tail; |
129 | static struct ref *remote_refs, **remote_tail; | |
584c6cc9 | 130 | |
8da19775 | 131 | static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) |
584c6cc9 LT |
132 | { |
133 | struct ref *ref; | |
f88395ac JH |
134 | int len = strlen(refname) + 1; |
135 | ref = xcalloc(1, sizeof(*ref) + len); | |
e702496e | 136 | hashcpy(ref->new_sha1, sha1); |
584c6cc9 | 137 | memcpy(ref->name, refname, len); |
f88395ac JH |
138 | *local_tail = ref; |
139 | local_tail = &ref->next; | |
584c6cc9 LT |
140 | return 0; |
141 | } | |
142 | ||
f88395ac JH |
143 | static void get_local_heads(void) |
144 | { | |
145 | local_tail = &local_refs; | |
cb5d709f | 146 | for_each_ref(one_local_ref, NULL); |
f88395ac JH |
147 | } |
148 | ||
cfee10a7 JH |
149 | static int receive_status(int in) |
150 | { | |
151 | char line[1000]; | |
152 | int ret = 0; | |
153 | int len = packet_read_line(in, line, sizeof(line)); | |
154 | if (len < 10 || memcmp(line, "unpack ", 7)) { | |
155 | fprintf(stderr, "did not receive status back\n"); | |
156 | return -1; | |
157 | } | |
158 | if (memcmp(line, "unpack ok\n", 10)) { | |
159 | fputs(line, stderr); | |
160 | ret = -1; | |
161 | } | |
162 | while (1) { | |
163 | len = packet_read_line(in, line, sizeof(line)); | |
164 | if (!len) | |
165 | break; | |
166 | if (len < 3 || | |
167 | (memcmp(line, "ok", 2) && memcmp(line, "ng", 2))) { | |
168 | fprintf(stderr, "protocol error: %s\n", line); | |
169 | ret = -1; | |
170 | break; | |
171 | } | |
172 | if (!memcmp(line, "ok", 2)) | |
173 | continue; | |
174 | fputs(line, stderr); | |
175 | ret = -1; | |
176 | } | |
177 | return ret; | |
178 | } | |
179 | ||
334f4831 JK |
180 | static void update_tracking_ref(struct remote *remote, struct ref *ref) |
181 | { | |
182 | struct refspec rs; | |
183 | int will_delete_ref; | |
184 | ||
185 | rs.src = ref->name; | |
186 | rs.dst = NULL; | |
187 | ||
188 | if (!ref->peer_ref) | |
189 | return; | |
190 | ||
191 | will_delete_ref = is_null_sha1(ref->peer_ref->new_sha1); | |
192 | ||
193 | if (!will_delete_ref && | |
194 | !hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) | |
195 | return; | |
196 | ||
197 | if (!remote_find_tracking(remote, &rs)) { | |
b50fa2bd JK |
198 | if (args.verbose) |
199 | fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst); | |
334f4831 JK |
200 | if (is_null_sha1(ref->peer_ref->new_sha1)) { |
201 | if (delete_ref(rs.dst, NULL)) | |
202 | error("Failed to delete"); | |
203 | } else | |
204 | update_ref("update by push", rs.dst, | |
205 | ref->new_sha1, NULL, 0, 0); | |
206 | free(rs.dst); | |
207 | } | |
208 | } | |
209 | ||
f7673490 JK |
210 | static const char *prettify_ref(const char *name) |
211 | { | |
212 | return name + ( | |
213 | !prefixcmp(name, "refs/heads/") ? 11 : | |
214 | !prefixcmp(name, "refs/tags/") ? 10 : | |
215 | !prefixcmp(name, "refs/remotes/") ? 13 : | |
216 | 0); | |
217 | } | |
218 | ||
219 | #define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3) | |
220 | ||
221 | static int do_send_pack(int in, int out, struct remote *remote, const char *dest, int nr_refspec, const char **refspec) | |
61221472 | 222 | { |
7f8e9828 | 223 | struct ref *ref; |
584c6cc9 | 224 | int new_refs; |
ed24928e | 225 | int ret = 0; |
cfee10a7 | 226 | int ask_for_status_report = 0; |
d4f694ba | 227 | int allow_deleting_refs = 0; |
cfee10a7 | 228 | int expect_status_report = 0; |
f7673490 | 229 | int shown_dest = 0; |
7f8e9828 | 230 | |
f88395ac | 231 | /* No funny business with the matcher */ |
2718ff09 | 232 | remote_tail = get_remote_heads(in, &remote_refs, 0, NULL, REF_NORMAL); |
f88395ac | 233 | get_local_heads(); |
584c6cc9 | 234 | |
cfee10a7 JH |
235 | /* Does the other end support the reporting? */ |
236 | if (server_supports("report-status")) | |
237 | ask_for_status_report = 1; | |
d4f694ba JH |
238 | if (server_supports("delete-refs")) |
239 | allow_deleting_refs = 1; | |
cfee10a7 | 240 | |
f88395ac JH |
241 | /* match them up */ |
242 | if (!remote_tail) | |
243 | remote_tail = &remote_refs; | |
244 | if (match_refs(local_refs, remote_refs, &remote_tail, | |
96249c04 | 245 | nr_refspec, refspec, args.send_all)) |
f88395ac | 246 | return -1; |
4c353e89 DB |
247 | |
248 | if (!remote_refs) { | |
7e23b06d AC |
249 | fprintf(stderr, "No refs in common and none specified; doing nothing.\n" |
250 | "Perhaps you should specify a branch such as 'master'.\n"); | |
4c353e89 DB |
251 | return 0; |
252 | } | |
253 | ||
584c6cc9 | 254 | /* |
f88395ac | 255 | * Finally, tell the other end! |
584c6cc9 | 256 | */ |
f88395ac JH |
257 | new_refs = 0; |
258 | for (ref = remote_refs; ref; ref = ref->next) { | |
259 | char old_hex[60], *new_hex; | |
b516968f | 260 | int will_delete_ref; |
f7673490 JK |
261 | const char *pretty_ref; |
262 | const char *pretty_peer; | |
d4f694ba | 263 | |
f88395ac | 264 | if (!ref->peer_ref) |
7f8e9828 | 265 | continue; |
d4f694ba | 266 | |
f7673490 JK |
267 | if (!shown_dest) { |
268 | fprintf(stderr, "To %s\n", dest); | |
269 | shown_dest = 1; | |
270 | } | |
271 | ||
272 | pretty_ref = prettify_ref(ref->name); | |
273 | pretty_peer = prettify_ref(ref->peer_ref->name); | |
b516968f DB |
274 | |
275 | will_delete_ref = is_null_sha1(ref->peer_ref->new_sha1); | |
276 | if (will_delete_ref && !allow_deleting_refs) { | |
f7673490 JK |
277 | fprintf(stderr, " ! %-*s %s (remote does not support deleting refs)\n", |
278 | SUMMARY_WIDTH, "[rejected]", pretty_ref); | |
d4f694ba JH |
279 | ret = -2; |
280 | continue; | |
281 | } | |
b516968f | 282 | if (!will_delete_ref && |
d4f694ba | 283 | !hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) { |
96249c04 | 284 | if (args.verbose) |
f7673490 JK |
285 | fprintf(stderr, " = %-*s %s -> %s\n", |
286 | SUMMARY_WIDTH, "[up to date]", | |
287 | pretty_peer, pretty_ref); | |
37fde874 JH |
288 | continue; |
289 | } | |
290 | ||
291 | /* This part determines what can overwrite what. | |
292 | * The rules are: | |
293 | * | |
ff27adf3 JH |
294 | * (0) you can always use --force or +A:B notation to |
295 | * selectively force individual ref pairs. | |
37fde874 JH |
296 | * |
297 | * (1) if the old thing does not exist, it is OK. | |
298 | * | |
299 | * (2) if you do not have the old thing, you are not allowed | |
300 | * to overwrite it; you would not know what you are losing | |
301 | * otherwise. | |
302 | * | |
303 | * (3) if both new and old are commit-ish, and new is a | |
304 | * descendant of old, it is OK. | |
d4f694ba JH |
305 | * |
306 | * (4) regardless of all of the above, removing :B is | |
307 | * always allowed. | |
37fde874 JH |
308 | */ |
309 | ||
96249c04 | 310 | if (!args.force_update && |
b516968f | 311 | !will_delete_ref && |
4b4ee90e | 312 | !is_null_sha1(ref->old_sha1) && |
ff27adf3 | 313 | !ref->force) { |
69310a34 JH |
314 | if (!has_sha1_file(ref->old_sha1) || |
315 | !ref_newer(ref->peer_ref->new_sha1, | |
f88395ac | 316 | ref->old_sha1)) { |
69310a34 JH |
317 | /* We do not have the remote ref, or |
318 | * we know that the remote ref is not | |
319 | * an ancestor of what we are trying to | |
320 | * push. Either way this can be losing | |
321 | * commits at the remote end and likely | |
322 | * we were not up to date to begin with. | |
323 | */ | |
f7673490 JK |
324 | fprintf(stderr, " ! %-*s %s -> %s (non-fast forward)\n", |
325 | SUMMARY_WIDTH, "[rejected]", | |
326 | pretty_peer, pretty_ref); | |
ed24928e | 327 | ret = -2; |
f88395ac JH |
328 | continue; |
329 | } | |
e4b5c7ff | 330 | } |
e702496e | 331 | hashcpy(ref->new_sha1, ref->peer_ref->new_sha1); |
b516968f | 332 | if (!will_delete_ref) |
d4f694ba | 333 | new_refs++; |
7f8e9828 LT |
334 | strcpy(old_hex, sha1_to_hex(ref->old_sha1)); |
335 | new_hex = sha1_to_hex(ref->new_sha1); | |
cfee10a7 | 336 | |
96249c04 | 337 | if (!args.dry_run) { |
a63103ae BE |
338 | if (ask_for_status_report) { |
339 | packet_write(out, "%s %s %s%c%s", | |
340 | old_hex, new_hex, ref->name, 0, | |
341 | "report-status"); | |
342 | ask_for_status_report = 0; | |
343 | expect_status_report = 1; | |
344 | } | |
345 | else | |
346 | packet_write(out, "%s %s %s", | |
347 | old_hex, new_hex, ref->name); | |
cfee10a7 | 348 | } |
b516968f | 349 | if (will_delete_ref) |
f7673490 JK |
350 | fprintf(stderr, " - %-*s %s\n", |
351 | SUMMARY_WIDTH, "[deleting]", | |
352 | pretty_ref); | |
353 | else if (is_null_sha1(ref->old_sha1)) { | |
354 | const char *msg; | |
355 | ||
356 | if (!prefixcmp(ref->name, "refs/tags/")) | |
357 | msg = "[new tag]"; | |
358 | else | |
359 | msg = "[new branch]"; | |
360 | fprintf(stderr, " * %-*s %s -> %s\n", | |
361 | SUMMARY_WIDTH, msg, | |
362 | pretty_peer, pretty_ref); | |
363 | } | |
d4f694ba | 364 | else { |
f7673490 JK |
365 | char quickref[83]; |
366 | char type = ' '; | |
367 | const char *msg = ""; | |
368 | ||
369 | strcpy(quickref, find_unique_abbrev(ref->old_sha1, DEFAULT_ABBREV)); | |
370 | if (ref_newer(ref->peer_ref->new_sha1, ref->old_sha1)) | |
371 | strcat(quickref, ".."); | |
372 | else { | |
373 | strcat(quickref, "..."); | |
374 | type = '+'; | |
375 | msg = " (forced update)"; | |
376 | } | |
377 | strcat(quickref, find_unique_abbrev(ref->new_sha1, DEFAULT_ABBREV)); | |
378 | ||
379 | fprintf(stderr, " %c %-*s %s -> %s%s\n", | |
380 | type, | |
381 | SUMMARY_WIDTH, quickref, | |
382 | pretty_peer, pretty_ref, | |
383 | msg); | |
d4f694ba | 384 | } |
61221472 | 385 | } |
f88395ac | 386 | |
f3a3214e | 387 | packet_flush(out); |
96249c04 | 388 | if (new_refs && !args.dry_run) |
0ae5f98c | 389 | ret = pack_objects(out, remote_refs); |
61221472 | 390 | close(out); |
cfee10a7 JH |
391 | |
392 | if (expect_status_report) { | |
393 | if (receive_status(in)) | |
394 | ret = -4; | |
395 | } | |
396 | ||
96249c04 | 397 | if (!args.dry_run && remote && ret == 0) { |
334f4831 JK |
398 | for (ref = remote_refs; ref; ref = ref->next) |
399 | update_tracking_ref(remote, ref); | |
400 | } | |
401 | ||
cfee10a7 JH |
402 | if (!new_refs && ret == 0) |
403 | fprintf(stderr, "Everything up-to-date\n"); | |
ed24928e | 404 | return ret; |
61221472 LT |
405 | } |
406 | ||
4577370e | 407 | static void verify_remote_names(int nr_heads, const char **heads) |
37adac76 JH |
408 | { |
409 | int i; | |
410 | ||
411 | for (i = 0; i < nr_heads; i++) { | |
412 | const char *remote = strchr(heads[i], ':'); | |
413 | ||
414 | remote = remote ? (remote + 1) : heads[i]; | |
415 | switch (check_ref_format(remote)) { | |
416 | case 0: /* ok */ | |
417 | case -2: /* ok but a single level -- that is fine for | |
418 | * a match pattern. | |
419 | */ | |
8558fd9e | 420 | case -3: /* ok but ends with a pattern-match character */ |
37adac76 JH |
421 | continue; |
422 | } | |
423 | die("remote part of refspec is not a valid name in %s", | |
424 | heads[i]); | |
425 | } | |
426 | } | |
f88395ac | 427 | |
96249c04 | 428 | int cmd_send_pack(int argc, const char **argv, const char *prefix) |
61221472 LT |
429 | { |
430 | int i, nr_heads = 0; | |
4577370e | 431 | const char **heads = NULL; |
96249c04 | 432 | const char *remote_name = NULL; |
b516968f | 433 | struct remote *remote = NULL; |
96249c04 | 434 | const char *dest = NULL; |
84a9b58c | 435 | |
61221472 | 436 | argv++; |
d089391c | 437 | for (i = 1; i < argc; i++, argv++) { |
96249c04 | 438 | const char *arg = *argv; |
61221472 LT |
439 | |
440 | if (*arg == '-') { | |
cc44c765 | 441 | if (!prefixcmp(arg, "--receive-pack=")) { |
96249c04 | 442 | args.receivepack = arg + 15; |
d23842fd UKK |
443 | continue; |
444 | } | |
cc44c765 | 445 | if (!prefixcmp(arg, "--exec=")) { |
96249c04 | 446 | args.receivepack = arg + 7; |
61221472 LT |
447 | continue; |
448 | } | |
b516968f DB |
449 | if (!prefixcmp(arg, "--remote=")) { |
450 | remote_name = arg + 9; | |
451 | continue; | |
452 | } | |
d089391c | 453 | if (!strcmp(arg, "--all")) { |
96249c04 | 454 | args.send_all = 1; |
d089391c LT |
455 | continue; |
456 | } | |
a63103ae | 457 | if (!strcmp(arg, "--dry-run")) { |
96249c04 | 458 | args.dry_run = 1; |
a63103ae BE |
459 | continue; |
460 | } | |
2a9c3fe8 | 461 | if (!strcmp(arg, "--force")) { |
96249c04 | 462 | args.force_update = 1; |
2a9c3fe8 LT |
463 | continue; |
464 | } | |
41f93a2c | 465 | if (!strcmp(arg, "--verbose")) { |
96249c04 | 466 | args.verbose = 1; |
41f93a2c LT |
467 | continue; |
468 | } | |
2245be3e | 469 | if (!strcmp(arg, "--thin")) { |
96249c04 | 470 | args.use_thin_pack = 1; |
2245be3e JH |
471 | continue; |
472 | } | |
61221472 LT |
473 | usage(send_pack_usage); |
474 | } | |
d089391c LT |
475 | if (!dest) { |
476 | dest = arg; | |
477 | continue; | |
478 | } | |
4577370e | 479 | heads = (const char **) argv; |
d089391c | 480 | nr_heads = argc - i; |
61221472 LT |
481 | break; |
482 | } | |
483 | if (!dest) | |
484 | usage(send_pack_usage); | |
96249c04 | 485 | if (heads && args.send_all) |
0bc3cdfc | 486 | usage(send_pack_usage); |
37adac76 | 487 | |
b516968f DB |
488 | if (remote_name) { |
489 | remote = remote_get(remote_name); | |
28b91f8a | 490 | if (!remote_has_url(remote, dest)) { |
b516968f DB |
491 | die("Destination %s is not a uri for %s", |
492 | dest, remote_name); | |
493 | } | |
494 | } | |
495 | ||
96249c04 DB |
496 | return send_pack(&args, dest, remote, nr_heads, heads); |
497 | } | |
498 | ||
499 | int send_pack(struct send_pack_args *my_args, | |
500 | const char *dest, struct remote *remote, | |
501 | int nr_heads, const char **heads) | |
502 | { | |
503 | int fd[2], ret; | |
504 | struct child_process *conn; | |
505 | ||
506 | memcpy(&args, my_args, sizeof(args)); | |
507 | ||
508 | verify_remote_names(nr_heads, heads); | |
509 | ||
510 | conn = git_connect(fd, dest, args.receivepack, args.verbose ? CONNECT_VERBOSE : 0); | |
f7673490 | 511 | ret = do_send_pack(fd[0], fd[1], remote, dest, nr_heads, heads); |
7f8e9828 LT |
512 | close(fd[0]); |
513 | close(fd[1]); | |
98158e9c | 514 | ret |= finish_connect(conn); |
8a5dbef8 | 515 | return !!ret; |
61221472 | 516 | } |