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Commit | Line | Data |
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575f4974 | 1 | #include "cache.h" |
fc04c412 | 2 | #include "pack.h" |
8a65ff76 | 3 | #include "refs.h" |
f3a3214e | 4 | #include "pkt-line.h" |
b1bf95bb | 5 | #include "run-command.h" |
576162a4 | 6 | #include "exec_cmd.h" |
11031d7e JS |
7 | #include "commit.h" |
8 | #include "object.h" | |
d79796bc JH |
9 | #include "remote.h" |
10 | #include "transport.h" | |
575f4974 | 11 | |
34263de0 | 12 | static const char receive_pack_usage[] = "git receive-pack <git-dir>"; |
575f4974 | 13 | |
986e8239 | 14 | enum deny_action { |
3d95d92b | 15 | DENY_UNCONFIGURED, |
986e8239 JK |
16 | DENY_IGNORE, |
17 | DENY_WARN, | |
18 | DENY_REFUSE, | |
19 | }; | |
20 | ||
1b53a076 JH |
21 | static int deny_deletes; |
22 | static int deny_non_fast_forwards; | |
3d95d92b | 23 | static enum deny_action deny_current_branch = DENY_UNCONFIGURED; |
747ca245 | 24 | static enum deny_action deny_delete_current = DENY_UNCONFIGURED; |
20dc0016 | 25 | static int receive_fsck_objects; |
e28714c5 JH |
26 | static int receive_unpack_limit = -1; |
27 | static int transfer_unpack_limit = -1; | |
46732fae | 28 | static int unpack_limit = 100; |
96f1e58f | 29 | static int report_status; |
b74fce16 | 30 | static int prefer_ofs_delta = 1; |
747ca245 | 31 | static const char *head_name; |
b74fce16 | 32 | static char *capabilities_to_send; |
cfee10a7 | 33 | |
986e8239 JK |
34 | static enum deny_action parse_deny_action(const char *var, const char *value) |
35 | { | |
36 | if (value) { | |
37 | if (!strcasecmp(value, "ignore")) | |
38 | return DENY_IGNORE; | |
39 | if (!strcasecmp(value, "warn")) | |
40 | return DENY_WARN; | |
41 | if (!strcasecmp(value, "refuse")) | |
42 | return DENY_REFUSE; | |
43 | } | |
44 | if (git_config_bool(var, value)) | |
45 | return DENY_REFUSE; | |
46 | return DENY_IGNORE; | |
47 | } | |
48 | ||
ef90d6d4 | 49 | static int receive_pack_config(const char *var, const char *value, void *cb) |
6fb75bed | 50 | { |
a240de11 JK |
51 | if (strcmp(var, "receive.denydeletes") == 0) { |
52 | deny_deletes = git_config_bool(var, value); | |
53 | return 0; | |
54 | } | |
55 | ||
e28714c5 | 56 | if (strcmp(var, "receive.denynonfastforwards") == 0) { |
6fb75bed SP |
57 | deny_non_fast_forwards = git_config_bool(var, value); |
58 | return 0; | |
59 | } | |
60 | ||
e28714c5 JH |
61 | if (strcmp(var, "receive.unpacklimit") == 0) { |
62 | receive_unpack_limit = git_config_int(var, value); | |
fc04c412 SP |
63 | return 0; |
64 | } | |
65 | ||
e28714c5 JH |
66 | if (strcmp(var, "transfer.unpacklimit") == 0) { |
67 | transfer_unpack_limit = git_config_int(var, value); | |
68 | return 0; | |
69 | } | |
70 | ||
20dc0016 MK |
71 | if (strcmp(var, "receive.fsckobjects") == 0) { |
72 | receive_fsck_objects = git_config_bool(var, value); | |
73 | return 0; | |
74 | } | |
75 | ||
986e8239 JK |
76 | if (!strcmp(var, "receive.denycurrentbranch")) { |
77 | deny_current_branch = parse_deny_action(var, value); | |
78 | return 0; | |
79 | } | |
80 | ||
747ca245 JH |
81 | if (strcmp(var, "receive.denydeletecurrent") == 0) { |
82 | deny_delete_current = parse_deny_action(var, value); | |
83 | return 0; | |
84 | } | |
85 | ||
b74fce16 NP |
86 | if (strcmp(var, "repack.usedeltabaseoffset") == 0) { |
87 | prefer_ofs_delta = git_config_bool(var, value); | |
88 | return 0; | |
89 | } | |
90 | ||
ef90d6d4 | 91 | return git_default_config(var, value, cb); |
6fb75bed SP |
92 | } |
93 | ||
8da19775 | 94 | static int show_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
575f4974 | 95 | { |
b74fce16 | 96 | if (!capabilities_to_send) |
cfee10a7 JH |
97 | packet_write(1, "%s %s\n", sha1_to_hex(sha1), path); |
98 | else | |
99 | packet_write(1, "%s %s%c%s\n", | |
b74fce16 NP |
100 | sha1_to_hex(sha1), path, 0, capabilities_to_send); |
101 | capabilities_to_send = NULL; | |
8a65ff76 | 102 | return 0; |
575f4974 LT |
103 | } |
104 | ||
8a65ff76 | 105 | static void write_head_info(void) |
575f4974 | 106 | { |
cb5d709f | 107 | for_each_ref(show_ref, NULL); |
b74fce16 | 108 | if (capabilities_to_send) |
8da19775 | 109 | show_ref("capabilities^{}", null_sha1, 0, NULL); |
cfee10a7 | 110 | |
575f4974 LT |
111 | } |
112 | ||
eb1af2df LT |
113 | struct command { |
114 | struct command *next; | |
cfee10a7 | 115 | const char *error_string; |
eb1af2df LT |
116 | unsigned char old_sha1[20]; |
117 | unsigned char new_sha1[20]; | |
8f1d2e6f | 118 | char ref_name[FLEX_ARRAY]; /* more */ |
575f4974 LT |
119 | }; |
120 | ||
96f1e58f | 121 | static struct command *commands; |
575f4974 | 122 | |
05ef58ec SP |
123 | static const char pre_receive_hook[] = "hooks/pre-receive"; |
124 | static const char post_receive_hook[] = "hooks/post-receive"; | |
b1bf95bb | 125 | |
6c319a22 SP |
126 | static int hook_status(int code, const char *hook_name) |
127 | { | |
128 | switch (code) { | |
129 | case 0: | |
130 | return 0; | |
131 | case -ERR_RUN_COMMAND_FORK: | |
132 | return error("hook fork failed"); | |
133 | case -ERR_RUN_COMMAND_EXEC: | |
134 | return error("hook execute failed"); | |
f43cd49f SP |
135 | case -ERR_RUN_COMMAND_PIPE: |
136 | return error("hook pipe failed"); | |
6c319a22 SP |
137 | case -ERR_RUN_COMMAND_WAITPID: |
138 | return error("waitpid failed"); | |
139 | case -ERR_RUN_COMMAND_WAITPID_WRONG_PID: | |
140 | return error("waitpid is confused"); | |
141 | case -ERR_RUN_COMMAND_WAITPID_SIGNAL: | |
142 | return error("%s died of signal", hook_name); | |
143 | case -ERR_RUN_COMMAND_WAITPID_NOEXIT: | |
144 | return error("%s died strangely", hook_name); | |
145 | default: | |
146 | error("%s exited with error code %d", hook_name, -code); | |
147 | return -code; | |
148 | } | |
149 | } | |
150 | ||
ae98a008 | 151 | static int run_receive_hook(const char *hook_name) |
b1bf95bb | 152 | { |
f43cd49f | 153 | static char buf[sizeof(commands->old_sha1) * 2 + PATH_MAX + 4]; |
c8dd2771 | 154 | struct command *cmd; |
f43cd49f SP |
155 | struct child_process proc; |
156 | const char *argv[2]; | |
157 | int have_input = 0, code; | |
c8dd2771 | 158 | |
f43cd49f | 159 | for (cmd = commands; !have_input && cmd; cmd = cmd->next) { |
c8dd2771 | 160 | if (!cmd->error_string) |
f43cd49f | 161 | have_input = 1; |
c8dd2771 | 162 | } |
b1bf95bb | 163 | |
f43cd49f | 164 | if (!have_input || access(hook_name, X_OK) < 0) |
b1bf95bb | 165 | return 0; |
c8dd2771 | 166 | |
c8dd2771 | 167 | argv[0] = hook_name; |
f43cd49f SP |
168 | argv[1] = NULL; |
169 | ||
170 | memset(&proc, 0, sizeof(proc)); | |
171 | proc.argv = argv; | |
172 | proc.in = -1; | |
173 | proc.stdout_to_stderr = 1; | |
174 | ||
175 | code = start_command(&proc); | |
176 | if (code) | |
177 | return hook_status(code, hook_name); | |
178 | for (cmd = commands; cmd; cmd = cmd->next) { | |
c8dd2771 | 179 | if (!cmd->error_string) { |
f43cd49f SP |
180 | size_t n = snprintf(buf, sizeof(buf), "%s %s %s\n", |
181 | sha1_to_hex(cmd->old_sha1), | |
182 | sha1_to_hex(cmd->new_sha1), | |
183 | cmd->ref_name); | |
184 | if (write_in_full(proc.in, buf, n) != n) | |
185 | break; | |
c8dd2771 | 186 | } |
c8dd2771 | 187 | } |
e72ae288 | 188 | close(proc.in); |
f43cd49f | 189 | return hook_status(finish_command(&proc), hook_name); |
b1bf95bb JW |
190 | } |
191 | ||
1d9e8b56 SP |
192 | static int run_update_hook(struct command *cmd) |
193 | { | |
194 | static const char update_hook[] = "hooks/update"; | |
195 | struct child_process proc; | |
196 | const char *argv[5]; | |
197 | ||
198 | if (access(update_hook, X_OK) < 0) | |
199 | return 0; | |
200 | ||
201 | argv[0] = update_hook; | |
202 | argv[1] = cmd->ref_name; | |
203 | argv[2] = sha1_to_hex(cmd->old_sha1); | |
204 | argv[3] = sha1_to_hex(cmd->new_sha1); | |
205 | argv[4] = NULL; | |
206 | ||
207 | memset(&proc, 0, sizeof(proc)); | |
208 | proc.argv = argv; | |
209 | proc.no_stdin = 1; | |
210 | proc.stdout_to_stderr = 1; | |
211 | ||
212 | return hook_status(run_command(&proc), update_hook); | |
213 | } | |
214 | ||
986e8239 JK |
215 | static int is_ref_checked_out(const char *ref) |
216 | { | |
986e8239 JK |
217 | if (is_bare_repository()) |
218 | return 0; | |
219 | ||
747ca245 | 220 | if (!head_name) |
986e8239 | 221 | return 0; |
747ca245 | 222 | return !strcmp(head_name, ref); |
986e8239 JK |
223 | } |
224 | ||
3d95d92b JH |
225 | static char *warn_unconfigured_deny_msg[] = { |
226 | "Updating the currently checked out branch may cause confusion,", | |
227 | "as the index and work tree do not reflect changes that are in HEAD.", | |
228 | "As a result, you may see the changes you just pushed into it", | |
229 | "reverted when you run 'git diff' over there, and you may want", | |
230 | "to run 'git reset --hard' before starting to work to recover.", | |
231 | "", | |
232 | "You can set 'receive.denyCurrentBranch' configuration variable to", | |
233 | "'refuse' in the remote repository to forbid pushing into its", | |
234 | "current branch." | |
235 | "", | |
236 | "To allow pushing into the current branch, you can set it to 'ignore';", | |
237 | "but this is not recommended unless you arranged to update its work", | |
238 | "tree to match what you pushed in some other way.", | |
239 | "", | |
240 | "To squelch this message, you can set it to 'warn'.", | |
241 | "", | |
242 | "Note that the default will change in a future version of git", | |
243 | "to refuse updating the current branch unless you have the", | |
244 | "configuration variable set to either 'ignore' or 'warn'." | |
245 | }; | |
246 | ||
247 | static void warn_unconfigured_deny(void) | |
248 | { | |
249 | int i; | |
250 | for (i = 0; i < ARRAY_SIZE(warn_unconfigured_deny_msg); i++) | |
88a667f0 | 251 | warning("%s", warn_unconfigured_deny_msg[i]); |
3d95d92b JH |
252 | } |
253 | ||
747ca245 JH |
254 | static char *warn_unconfigured_deny_delete_current_msg[] = { |
255 | "Deleting the current branch can cause confusion by making the next", | |
256 | "'git clone' not check out any file.", | |
257 | "", | |
258 | "You can set 'receive.denyDeleteCurrent' configuration variable to", | |
259 | "'refuse' in the remote repository to disallow deleting the current", | |
260 | "branch.", | |
261 | "", | |
262 | "You can set it to 'ignore' to allow such a delete without a warning.", | |
263 | "", | |
264 | "To make this warning message less loud, you can set it to 'warn'.", | |
265 | "", | |
266 | "Note that the default will change in a future version of git", | |
267 | "to refuse deleting the current branch unless you have the", | |
268 | "configuration variable set to either 'ignore' or 'warn'." | |
269 | }; | |
270 | ||
271 | static void warn_unconfigured_deny_delete_current(void) | |
272 | { | |
273 | int i; | |
274 | for (i = 0; | |
275 | i < ARRAY_SIZE(warn_unconfigured_deny_delete_current_msg); | |
276 | i++) | |
88a667f0 | 277 | warning("%s", warn_unconfigured_deny_delete_current_msg[i]); |
747ca245 JH |
278 | } |
279 | ||
8aaf7d64 | 280 | static const char *update(struct command *cmd) |
2eca23da | 281 | { |
cfee10a7 JH |
282 | const char *name = cmd->ref_name; |
283 | unsigned char *old_sha1 = cmd->old_sha1; | |
284 | unsigned char *new_sha1 = cmd->new_sha1; | |
3159c8dc | 285 | struct ref_lock *lock; |
2eca23da | 286 | |
061d6b9a MK |
287 | /* only refs/... are allowed */ |
288 | if (prefixcmp(name, "refs/") || check_ref_format(name + 5)) { | |
0b8293f6 | 289 | error("refusing to create funny ref '%s' remotely", name); |
8aaf7d64 | 290 | return "funny refname"; |
cfee10a7 | 291 | } |
d8a1deec | 292 | |
3d95d92b JH |
293 | if (is_ref_checked_out(name)) { |
294 | switch (deny_current_branch) { | |
295 | case DENY_IGNORE: | |
986e8239 | 296 | break; |
3d95d92b JH |
297 | case DENY_UNCONFIGURED: |
298 | case DENY_WARN: | |
299 | warning("updating the current branch"); | |
300 | if (deny_current_branch == DENY_UNCONFIGURED) | |
301 | warn_unconfigured_deny(); | |
986e8239 | 302 | break; |
3d95d92b JH |
303 | case DENY_REFUSE: |
304 | error("refusing to update checked out branch: %s", name); | |
305 | return "branch is currently checked out"; | |
306 | } | |
986e8239 JK |
307 | } |
308 | ||
d4f694ba | 309 | if (!is_null_sha1(new_sha1) && !has_sha1_file(new_sha1)) { |
8aaf7d64 SP |
310 | error("unpack should have generated %s, " |
311 | "but I can't find it!", sha1_to_hex(new_sha1)); | |
312 | return "bad pack"; | |
cfee10a7 | 313 | } |
747ca245 JH |
314 | |
315 | if (!is_null_sha1(old_sha1) && is_null_sha1(new_sha1)) { | |
316 | if (deny_deletes && !prefixcmp(name, "refs/heads/")) { | |
317 | error("denying ref deletion for %s", name); | |
318 | return "deletion prohibited"; | |
319 | } | |
320 | ||
321 | if (!strcmp(name, head_name)) { | |
322 | switch (deny_delete_current) { | |
323 | case DENY_IGNORE: | |
324 | break; | |
325 | case DENY_WARN: | |
326 | case DENY_UNCONFIGURED: | |
327 | if (deny_delete_current == DENY_UNCONFIGURED) | |
328 | warn_unconfigured_deny_delete_current(); | |
329 | warning("deleting the current branch"); | |
330 | break; | |
331 | case DENY_REFUSE: | |
332 | error("refusing to delete the current branch: %s", name); | |
333 | return "deletion of the current branch prohibited"; | |
334 | } | |
335 | } | |
a240de11 | 336 | } |
747ca245 | 337 | |
d4f694ba | 338 | if (deny_non_fast_forwards && !is_null_sha1(new_sha1) && |
ba988a83 | 339 | !is_null_sha1(old_sha1) && |
cc44c765 | 340 | !prefixcmp(name, "refs/heads/")) { |
eab82707 | 341 | struct object *old_object, *new_object; |
11031d7e | 342 | struct commit *old_commit, *new_commit; |
9edd7e46 | 343 | struct commit_list *bases, *ent; |
11031d7e | 344 | |
eab82707 MK |
345 | old_object = parse_object(old_sha1); |
346 | new_object = parse_object(new_sha1); | |
347 | ||
348 | if (!old_object || !new_object || | |
349 | old_object->type != OBJ_COMMIT || | |
350 | new_object->type != OBJ_COMMIT) { | |
351 | error("bad sha1 objects for %s", name); | |
352 | return "bad ref"; | |
353 | } | |
354 | old_commit = (struct commit *)old_object; | |
355 | new_commit = (struct commit *)new_object; | |
9edd7e46 JS |
356 | bases = get_merge_bases(old_commit, new_commit, 1); |
357 | for (ent = bases; ent; ent = ent->next) | |
358 | if (!hashcmp(old_sha1, ent->item->object.sha1)) | |
11031d7e | 359 | break; |
9edd7e46 | 360 | free_commit_list(bases); |
8aaf7d64 SP |
361 | if (!ent) { |
362 | error("denying non-fast forward %s" | |
363 | " (you should pull first)", name); | |
364 | return "non-fast forward"; | |
365 | } | |
11031d7e | 366 | } |
1d9e8b56 | 367 | if (run_update_hook(cmd)) { |
8aaf7d64 SP |
368 | error("hook declined to update %s", name); |
369 | return "hook declined"; | |
b1bf95bb | 370 | } |
3159c8dc | 371 | |
d4f694ba | 372 | if (is_null_sha1(new_sha1)) { |
28391a80 JS |
373 | if (!parse_object(old_sha1)) { |
374 | warning ("Allowing deletion of corrupt ref."); | |
375 | old_sha1 = NULL; | |
376 | } | |
eca35a25 | 377 | if (delete_ref(name, old_sha1, 0)) { |
8aaf7d64 SP |
378 | error("failed to delete %s", name); |
379 | return "failed to delete"; | |
d4f694ba | 380 | } |
8aaf7d64 | 381 | return NULL; /* good */ |
d4f694ba JH |
382 | } |
383 | else { | |
68db31cc | 384 | lock = lock_any_ref_for_update(name, old_sha1, 0); |
d4f694ba | 385 | if (!lock) { |
8aaf7d64 SP |
386 | error("failed to lock %s", name); |
387 | return "failed to lock"; | |
d4f694ba | 388 | } |
ef203f08 | 389 | if (write_ref_sha1(lock, new_sha1, "push")) { |
8aaf7d64 | 390 | return "failed to write"; /* error() already called */ |
ef203f08 | 391 | } |
8aaf7d64 | 392 | return NULL; /* good */ |
19614330 | 393 | } |
2eca23da LT |
394 | } |
395 | ||
19614330 JH |
396 | static char update_post_hook[] = "hooks/post-update"; |
397 | ||
398 | static void run_update_post_hook(struct command *cmd) | |
399 | { | |
400 | struct command *cmd_p; | |
401 | int argc; | |
9201c707 | 402 | const char **argv; |
19614330 | 403 | |
3e6e152c | 404 | for (argc = 0, cmd_p = cmd; cmd_p; cmd_p = cmd_p->next) { |
cfee10a7 | 405 | if (cmd_p->error_string) |
19614330 JH |
406 | continue; |
407 | argc++; | |
408 | } | |
3e6e152c SP |
409 | if (!argc || access(update_post_hook, X_OK) < 0) |
410 | return; | |
411 | argv = xmalloc(sizeof(*argv) * (2 + argc)); | |
19614330 JH |
412 | argv[0] = update_post_hook; |
413 | ||
414 | for (argc = 1, cmd_p = cmd; cmd_p; cmd_p = cmd_p->next) { | |
9201c707 | 415 | char *p; |
cfee10a7 | 416 | if (cmd_p->error_string) |
19614330 | 417 | continue; |
9201c707 JH |
418 | p = xmalloc(strlen(cmd_p->ref_name) + 1); |
419 | strcpy(p, cmd_p->ref_name); | |
420 | argv[argc] = p; | |
19614330 JH |
421 | argc++; |
422 | } | |
423 | argv[argc] = NULL; | |
95d3c4f5 SP |
424 | run_command_v_opt(argv, RUN_COMMAND_NO_STDIN |
425 | | RUN_COMMAND_STDOUT_TO_STDERR); | |
19614330 | 426 | } |
2eca23da | 427 | |
8aaf7d64 | 428 | static void execute_commands(const char *unpacker_error) |
575f4974 | 429 | { |
eb1af2df | 430 | struct command *cmd = commands; |
747ca245 | 431 | unsigned char sha1[20]; |
8aaf7d64 SP |
432 | |
433 | if (unpacker_error) { | |
434 | while (cmd) { | |
435 | cmd->error_string = "n/a (unpacker error)"; | |
436 | cmd = cmd->next; | |
437 | } | |
438 | return; | |
439 | } | |
440 | ||
ae98a008 | 441 | if (run_receive_hook(pre_receive_hook)) { |
05ef58ec SP |
442 | while (cmd) { |
443 | cmd->error_string = "pre-receive hook declined"; | |
444 | cmd = cmd->next; | |
445 | } | |
446 | return; | |
447 | } | |
448 | ||
747ca245 JH |
449 | head_name = resolve_ref("HEAD", sha1, 0, NULL); |
450 | ||
eb1af2df | 451 | while (cmd) { |
8aaf7d64 | 452 | cmd->error_string = update(cmd); |
eb1af2df | 453 | cmd = cmd->next; |
575f4974 LT |
454 | } |
455 | } | |
456 | ||
457 | static void read_head_info(void) | |
458 | { | |
eb1af2df | 459 | struct command **p = &commands; |
575f4974 LT |
460 | for (;;) { |
461 | static char line[1000]; | |
eb1af2df LT |
462 | unsigned char old_sha1[20], new_sha1[20]; |
463 | struct command *cmd; | |
cfee10a7 JH |
464 | char *refname; |
465 | int len, reflen; | |
eb1af2df LT |
466 | |
467 | len = packet_read_line(0, line, sizeof(line)); | |
575f4974 LT |
468 | if (!len) |
469 | break; | |
eb1af2df LT |
470 | if (line[len-1] == '\n') |
471 | line[--len] = 0; | |
472 | if (len < 83 || | |
473 | line[40] != ' ' || | |
474 | line[81] != ' ' || | |
475 | get_sha1_hex(line, old_sha1) || | |
476 | get_sha1_hex(line + 41, new_sha1)) | |
cfee10a7 JH |
477 | die("protocol error: expected old/new/ref, got '%s'", |
478 | line); | |
479 | ||
480 | refname = line + 82; | |
481 | reflen = strlen(refname); | |
482 | if (reflen + 82 < len) { | |
483 | if (strstr(refname + reflen + 1, "report-status")) | |
484 | report_status = 1; | |
485 | } | |
eb1af2df | 486 | cmd = xmalloc(sizeof(struct command) + len - 80); |
e702496e SP |
487 | hashcpy(cmd->old_sha1, old_sha1); |
488 | hashcpy(cmd->new_sha1, new_sha1); | |
eb1af2df | 489 | memcpy(cmd->ref_name, line + 82, len - 81); |
8aaf7d64 | 490 | cmd->error_string = NULL; |
eb1af2df LT |
491 | cmd->next = NULL; |
492 | *p = cmd; | |
493 | p = &cmd->next; | |
575f4974 LT |
494 | } |
495 | } | |
496 | ||
fc04c412 SP |
497 | static const char *parse_pack_header(struct pack_header *hdr) |
498 | { | |
a69e5429 JH |
499 | switch (read_pack_header(0, hdr)) { |
500 | case PH_ERROR_EOF: | |
501 | return "eof before pack header was fully read"; | |
502 | ||
503 | case PH_ERROR_PACK_SIGNATURE: | |
fc04c412 | 504 | return "protocol error (pack signature mismatch detected)"; |
a69e5429 JH |
505 | |
506 | case PH_ERROR_PROTOCOL: | |
fc04c412 | 507 | return "protocol error (pack version unsupported)"; |
a69e5429 JH |
508 | |
509 | default: | |
510 | return "unknown error in parse_pack_header"; | |
511 | ||
512 | case 0: | |
513 | return NULL; | |
514 | } | |
fc04c412 SP |
515 | } |
516 | ||
576162a4 NP |
517 | static const char *pack_lockfile; |
518 | ||
861ed121 | 519 | static const char *unpack(void) |
575f4974 | 520 | { |
fc04c412 SP |
521 | struct pack_header hdr; |
522 | const char *hdr_err; | |
523 | char hdr_arg[38]; | |
fc04c412 SP |
524 | |
525 | hdr_err = parse_pack_header(&hdr); | |
526 | if (hdr_err) | |
527 | return hdr_err; | |
6e1c2344 RJ |
528 | snprintf(hdr_arg, sizeof(hdr_arg), |
529 | "--pack_header=%"PRIu32",%"PRIu32, | |
fc04c412 SP |
530 | ntohl(hdr.hdr_version), ntohl(hdr.hdr_entries)); |
531 | ||
532 | if (ntohl(hdr.hdr_entries) < unpack_limit) { | |
20dc0016 MK |
533 | int code, i = 0; |
534 | const char *unpacker[4]; | |
535 | unpacker[i++] = "unpack-objects"; | |
536 | if (receive_fsck_objects) | |
537 | unpacker[i++] = "--strict"; | |
538 | unpacker[i++] = hdr_arg; | |
539 | unpacker[i++] = NULL; | |
9b0b5093 | 540 | code = run_command_v_opt(unpacker, RUN_GIT_CMD); |
576162a4 | 541 | switch (code) { |
fc04c412 SP |
542 | case 0: |
543 | return NULL; | |
544 | case -ERR_RUN_COMMAND_FORK: | |
545 | return "unpack fork failed"; | |
546 | case -ERR_RUN_COMMAND_EXEC: | |
547 | return "unpack execute failed"; | |
548 | case -ERR_RUN_COMMAND_WAITPID: | |
549 | return "waitpid failed"; | |
550 | case -ERR_RUN_COMMAND_WAITPID_WRONG_PID: | |
551 | return "waitpid is confused"; | |
552 | case -ERR_RUN_COMMAND_WAITPID_SIGNAL: | |
553 | return "unpacker died of signal"; | |
554 | case -ERR_RUN_COMMAND_WAITPID_NOEXIT: | |
555 | return "unpacker died strangely"; | |
556 | default: | |
557 | return "unpacker exited with error code"; | |
576162a4 NP |
558 | } |
559 | } else { | |
20dc0016 MK |
560 | const char *keeper[7]; |
561 | int s, status, i = 0; | |
576162a4 | 562 | char keep_arg[256]; |
e8016abf | 563 | struct child_process ip; |
576162a4 | 564 | |
85e72830 | 565 | s = sprintf(keep_arg, "--keep=receive-pack %"PRIuMAX" on ", (uintmax_t) getpid()); |
576162a4 NP |
566 | if (gethostname(keep_arg + s, sizeof(keep_arg) - s)) |
567 | strcpy(keep_arg + s, "localhost"); | |
568 | ||
20dc0016 MK |
569 | keeper[i++] = "index-pack"; |
570 | keeper[i++] = "--stdin"; | |
571 | if (receive_fsck_objects) | |
572 | keeper[i++] = "--strict"; | |
573 | keeper[i++] = "--fix-thin"; | |
574 | keeper[i++] = hdr_arg; | |
575 | keeper[i++] = keep_arg; | |
576 | keeper[i++] = NULL; | |
e8016abf SP |
577 | memset(&ip, 0, sizeof(ip)); |
578 | ip.argv = keeper; | |
579 | ip.out = -1; | |
580 | ip.git_cmd = 1; | |
581 | if (start_command(&ip)) | |
576162a4 | 582 | return "index-pack fork failed"; |
106764e6 | 583 | pack_lockfile = index_pack_lockfile(ip.out); |
e72ae288 | 584 | close(ip.out); |
e8016abf SP |
585 | status = finish_command(&ip); |
586 | if (!status) { | |
576162a4 NP |
587 | reprepare_packed_git(); |
588 | return NULL; | |
589 | } | |
590 | return "index-pack abnormal exit"; | |
cfee10a7 JH |
591 | } |
592 | } | |
593 | ||
594 | static void report(const char *unpack_status) | |
595 | { | |
596 | struct command *cmd; | |
597 | packet_write(1, "unpack %s\n", | |
598 | unpack_status ? unpack_status : "ok"); | |
599 | for (cmd = commands; cmd; cmd = cmd->next) { | |
600 | if (!cmd->error_string) | |
601 | packet_write(1, "ok %s\n", | |
602 | cmd->ref_name); | |
603 | else | |
604 | packet_write(1, "ng %s %s\n", | |
605 | cmd->ref_name, cmd->error_string); | |
575f4974 | 606 | } |
cfee10a7 | 607 | packet_flush(1); |
575f4974 LT |
608 | } |
609 | ||
d4f694ba JH |
610 | static int delete_only(struct command *cmd) |
611 | { | |
612 | while (cmd) { | |
613 | if (!is_null_sha1(cmd->new_sha1)) | |
614 | return 0; | |
615 | cmd = cmd->next; | |
616 | } | |
617 | return 1; | |
618 | } | |
619 | ||
d79796bc JH |
620 | static int add_refs_from_alternate(struct alternate_object_database *e, void *unused) |
621 | { | |
b8492539 JH |
622 | char *other; |
623 | size_t len; | |
d79796bc JH |
624 | struct remote *remote; |
625 | struct transport *transport; | |
626 | const struct ref *extra; | |
627 | ||
b8492539 JH |
628 | e->name[-1] = '\0'; |
629 | other = xstrdup(make_absolute_path(e->base)); | |
630 | e->name[-1] = '/'; | |
631 | len = strlen(other); | |
632 | ||
d79796bc JH |
633 | while (other[len-1] == '/') |
634 | other[--len] = '\0'; | |
635 | if (len < 8 || memcmp(other + len - 8, "/objects", 8)) | |
636 | return 0; | |
637 | /* Is this a git repository with refs? */ | |
638 | memcpy(other + len - 8, "/refs", 6); | |
639 | if (!is_directory(other)) | |
640 | return 0; | |
641 | other[len - 8] = '\0'; | |
642 | remote = remote_get(other); | |
643 | transport = transport_get(remote, other); | |
644 | for (extra = transport_get_remote_refs(transport); | |
645 | extra; | |
646 | extra = extra->next) { | |
647 | add_extra_ref(".have", extra->old_sha1, 0); | |
648 | } | |
649 | transport_disconnect(transport); | |
650 | free(other); | |
651 | return 0; | |
652 | } | |
653 | ||
654 | static void add_alternate_refs(void) | |
655 | { | |
656 | foreach_alt_odb(add_refs_from_alternate, NULL); | |
657 | } | |
658 | ||
be5908ae | 659 | int cmd_receive_pack(int argc, const char **argv, const char *prefix) |
575f4974 | 660 | { |
d0efc8a7 | 661 | int i; |
8d630132 | 662 | char *dir = NULL; |
575f4974 LT |
663 | |
664 | argv++; | |
665 | for (i = 1; i < argc; i++) { | |
be5908ae | 666 | const char *arg = *argv++; |
575f4974 LT |
667 | |
668 | if (*arg == '-') { | |
575f4974 LT |
669 | /* Do flag handling here */ |
670 | usage(receive_pack_usage); | |
671 | } | |
d0efc8a7 LT |
672 | if (dir) |
673 | usage(receive_pack_usage); | |
be5908ae | 674 | dir = xstrdup(arg); |
575f4974 LT |
675 | } |
676 | if (!dir) | |
677 | usage(receive_pack_usage); | |
678 | ||
e1464ca7 | 679 | setup_path(); |
5c09f321 | 680 | |
3159c8dc | 681 | if (!enter_repo(dir, 0)) |
05ac6b34 | 682 | die("'%s' does not appear to be a git repository", dir); |
575f4974 | 683 | |
a0022eeb JH |
684 | if (is_repository_shallow()) |
685 | die("attempt to push into a shallow repository"); | |
686 | ||
ef90d6d4 | 687 | git_config(receive_pack_config, NULL); |
6fb75bed | 688 | |
e28714c5 JH |
689 | if (0 <= transfer_unpack_limit) |
690 | unpack_limit = transfer_unpack_limit; | |
691 | else if (0 <= receive_unpack_limit) | |
692 | unpack_limit = receive_unpack_limit; | |
693 | ||
b74fce16 NP |
694 | capabilities_to_send = (prefer_ofs_delta) ? |
695 | " report-status delete-refs ofs-delta " : | |
696 | " report-status delete-refs "; | |
697 | ||
d79796bc | 698 | add_alternate_refs(); |
8a65ff76 | 699 | write_head_info(); |
d79796bc | 700 | clear_extra_refs(); |
575f4974 LT |
701 | |
702 | /* EOF */ | |
f3a3214e | 703 | packet_flush(1); |
575f4974 LT |
704 | |
705 | read_head_info(); | |
7f8e9828 | 706 | if (commands) { |
d4f694ba JH |
707 | const char *unpack_status = NULL; |
708 | ||
709 | if (!delete_only(commands)) | |
710 | unpack_status = unpack(); | |
8aaf7d64 | 711 | execute_commands(unpack_status); |
576162a4 | 712 | if (pack_lockfile) |
691f1a28 | 713 | unlink_or_warn(pack_lockfile); |
cfee10a7 JH |
714 | if (report_status) |
715 | report(unpack_status); | |
ae98a008 | 716 | run_receive_hook(post_receive_hook); |
8e663d9e | 717 | run_update_post_hook(commands); |
7f8e9828 | 718 | } |
575f4974 LT |
719 | return 0; |
720 | } |