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Commit | Line | Data |
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1e4cd68c | 1 | #include "builtin.h" |
fc04c412 | 2 | #include "pack.h" |
8a65ff76 | 3 | #include "refs.h" |
f3a3214e | 4 | #include "pkt-line.h" |
38a81b4e | 5 | #include "sideband.h" |
b1bf95bb | 6 | #include "run-command.h" |
576162a4 | 7 | #include "exec_cmd.h" |
11031d7e JS |
8 | #include "commit.h" |
9 | #include "object.h" | |
d79796bc | 10 | #include "remote.h" |
47a59185 | 11 | #include "connect.h" |
d79796bc | 12 | #include "transport.h" |
da3efdb1 | 13 | #include "string-list.h" |
cff38a5e | 14 | #include "sha1-array.h" |
52fed6e1 | 15 | #include "connected.h" |
31c42bff | 16 | #include "argv-array.h" |
ff5effdf | 17 | #include "version.h" |
575f4974 | 18 | |
34263de0 | 19 | static const char receive_pack_usage[] = "git receive-pack <git-dir>"; |
575f4974 | 20 | |
986e8239 | 21 | enum deny_action { |
3d95d92b | 22 | DENY_UNCONFIGURED, |
986e8239 JK |
23 | DENY_IGNORE, |
24 | DENY_WARN, | |
4b05548f | 25 | DENY_REFUSE |
986e8239 JK |
26 | }; |
27 | ||
1b53a076 JH |
28 | static int deny_deletes; |
29 | static int deny_non_fast_forwards; | |
3d95d92b | 30 | static enum deny_action deny_current_branch = DENY_UNCONFIGURED; |
747ca245 | 31 | static enum deny_action deny_delete_current = DENY_UNCONFIGURED; |
dab76d3a JH |
32 | static int receive_fsck_objects = -1; |
33 | static int transfer_fsck_objects = -1; | |
e28714c5 JH |
34 | static int receive_unpack_limit = -1; |
35 | static int transfer_unpack_limit = -1; | |
46732fae | 36 | static int unpack_limit = 100; |
96f1e58f | 37 | static int report_status; |
38a81b4e | 38 | static int use_sideband; |
c207e34f | 39 | static int quiet; |
b74fce16 | 40 | static int prefer_ofs_delta = 1; |
77e3efbf JH |
41 | static int auto_update_server_info; |
42 | static int auto_gc = 1; | |
f7c815c3 | 43 | static int fix_thin = 1; |
747ca245 | 44 | static const char *head_name; |
96ec7b1e | 45 | static void *head_name_to_free; |
185c04e0 | 46 | static int sent_capabilities; |
0a1bc12b | 47 | static int shallow_update; |
5dbd7676 | 48 | static const char *alt_shallow_file; |
a85b377d JH |
49 | static int accept_push_cert = 1; |
50 | static struct strbuf push_cert = STRBUF_INIT; | |
51 | static unsigned char push_cert_sha1[20]; | |
cfee10a7 | 52 | |
986e8239 JK |
53 | static enum deny_action parse_deny_action(const char *var, const char *value) |
54 | { | |
55 | if (value) { | |
56 | if (!strcasecmp(value, "ignore")) | |
57 | return DENY_IGNORE; | |
58 | if (!strcasecmp(value, "warn")) | |
59 | return DENY_WARN; | |
60 | if (!strcasecmp(value, "refuse")) | |
61 | return DENY_REFUSE; | |
62 | } | |
63 | if (git_config_bool(var, value)) | |
64 | return DENY_REFUSE; | |
65 | return DENY_IGNORE; | |
66 | } | |
67 | ||
ef90d6d4 | 68 | static int receive_pack_config(const char *var, const char *value, void *cb) |
6fb75bed | 69 | { |
daebaa78 JH |
70 | int status = parse_hide_refs_config(var, value, "receive"); |
71 | ||
72 | if (status) | |
73 | return status; | |
74 | ||
a240de11 JK |
75 | if (strcmp(var, "receive.denydeletes") == 0) { |
76 | deny_deletes = git_config_bool(var, value); | |
77 | return 0; | |
78 | } | |
79 | ||
e28714c5 | 80 | if (strcmp(var, "receive.denynonfastforwards") == 0) { |
6fb75bed SP |
81 | deny_non_fast_forwards = git_config_bool(var, value); |
82 | return 0; | |
83 | } | |
84 | ||
e28714c5 JH |
85 | if (strcmp(var, "receive.unpacklimit") == 0) { |
86 | receive_unpack_limit = git_config_int(var, value); | |
fc04c412 SP |
87 | return 0; |
88 | } | |
89 | ||
e28714c5 JH |
90 | if (strcmp(var, "transfer.unpacklimit") == 0) { |
91 | transfer_unpack_limit = git_config_int(var, value); | |
92 | return 0; | |
93 | } | |
94 | ||
20dc0016 MK |
95 | if (strcmp(var, "receive.fsckobjects") == 0) { |
96 | receive_fsck_objects = git_config_bool(var, value); | |
97 | return 0; | |
98 | } | |
99 | ||
dab76d3a JH |
100 | if (strcmp(var, "transfer.fsckobjects") == 0) { |
101 | transfer_fsck_objects = git_config_bool(var, value); | |
102 | return 0; | |
103 | } | |
104 | ||
986e8239 JK |
105 | if (!strcmp(var, "receive.denycurrentbranch")) { |
106 | deny_current_branch = parse_deny_action(var, value); | |
107 | return 0; | |
108 | } | |
109 | ||
747ca245 JH |
110 | if (strcmp(var, "receive.denydeletecurrent") == 0) { |
111 | deny_delete_current = parse_deny_action(var, value); | |
112 | return 0; | |
113 | } | |
114 | ||
b74fce16 NP |
115 | if (strcmp(var, "repack.usedeltabaseoffset") == 0) { |
116 | prefer_ofs_delta = git_config_bool(var, value); | |
117 | return 0; | |
118 | } | |
119 | ||
77e3efbf JH |
120 | if (strcmp(var, "receive.updateserverinfo") == 0) { |
121 | auto_update_server_info = git_config_bool(var, value); | |
122 | return 0; | |
123 | } | |
124 | ||
125 | if (strcmp(var, "receive.autogc") == 0) { | |
126 | auto_gc = git_config_bool(var, value); | |
127 | return 0; | |
128 | } | |
129 | ||
0a1bc12b NTND |
130 | if (strcmp(var, "receive.shallowupdate") == 0) { |
131 | shallow_update = git_config_bool(var, value); | |
132 | return 0; | |
133 | } | |
134 | ||
a85b377d JH |
135 | if (strcmp(var, "receive.acceptpushcert") == 0) { |
136 | accept_push_cert = git_config_bool(var, value); | |
137 | return 0; | |
138 | } | |
139 | ||
ef90d6d4 | 140 | return git_default_config(var, value, cb); |
6fb75bed SP |
141 | } |
142 | ||
bc98201d | 143 | static void show_ref(const char *path, const unsigned char *sha1) |
575f4974 | 144 | { |
daebaa78 JH |
145 | if (ref_is_hidden(path)) |
146 | return; | |
147 | ||
52d2ae58 | 148 | if (sent_capabilities) { |
cfee10a7 | 149 | packet_write(1, "%s %s\n", sha1_to_hex(sha1), path); |
52d2ae58 JH |
150 | } else { |
151 | struct strbuf cap = STRBUF_INIT; | |
152 | ||
153 | strbuf_addstr(&cap, | |
154 | "report-status delete-refs side-band-64k quiet"); | |
155 | if (prefer_ofs_delta) | |
156 | strbuf_addstr(&cap, " ofs-delta"); | |
a85b377d JH |
157 | if (accept_push_cert) |
158 | strbuf_addstr(&cap, " push-cert"); | |
52d2ae58 JH |
159 | strbuf_addf(&cap, " agent=%s", git_user_agent_sanitized()); |
160 | packet_write(1, "%s %s%c%s\n", | |
161 | sha1_to_hex(sha1), path, 0, cap.buf); | |
162 | strbuf_release(&cap); | |
163 | sent_capabilities = 1; | |
164 | } | |
575f4974 LT |
165 | } |
166 | ||
bc98201d | 167 | static int show_ref_cb(const char *path, const unsigned char *sha1, int flag, void *unused) |
6b01ecfe JT |
168 | { |
169 | path = strip_namespace(path); | |
170 | /* | |
171 | * Advertise refs outside our current namespace as ".have" | |
172 | * refs, so that the client can use them to minimize data | |
173 | * transfer but will otherwise ignore them. This happens to | |
174 | * cover ".have" that are thrown in by add_one_alternate_ref() | |
175 | * to mark histories that are complete in our alternates as | |
176 | * well. | |
177 | */ | |
178 | if (!path) | |
179 | path = ".have"; | |
bc98201d MH |
180 | show_ref(path, sha1); |
181 | return 0; | |
6b01ecfe JT |
182 | } |
183 | ||
85f25104 | 184 | static void show_one_alternate_sha1(const unsigned char sha1[20], void *unused) |
b7a025d9 | 185 | { |
85f25104 | 186 | show_ref(".have", sha1); |
b7a025d9 MH |
187 | } |
188 | ||
189 | static void collect_one_alternate_ref(const struct ref *ref, void *data) | |
190 | { | |
191 | struct sha1_array *sa = data; | |
192 | sha1_array_append(sa, ref->old_sha1); | |
6b01ecfe JT |
193 | } |
194 | ||
8a65ff76 | 195 | static void write_head_info(void) |
575f4974 | 196 | { |
b7a025d9 MH |
197 | struct sha1_array sa = SHA1_ARRAY_INIT; |
198 | for_each_alternate_ref(collect_one_alternate_ref, &sa); | |
85f25104 | 199 | sha1_array_for_each_unique(&sa, show_one_alternate_sha1, NULL); |
b7a025d9 | 200 | sha1_array_clear(&sa); |
6b01ecfe | 201 | for_each_ref(show_ref_cb, NULL); |
185c04e0 | 202 | if (!sent_capabilities) |
bc98201d | 203 | show_ref("capabilities^{}", null_sha1); |
cfee10a7 | 204 | |
ad491366 NTND |
205 | advertise_shallow_grafts(1); |
206 | ||
b7a025d9 MH |
207 | /* EOF */ |
208 | packet_flush(1); | |
575f4974 LT |
209 | } |
210 | ||
eb1af2df LT |
211 | struct command { |
212 | struct command *next; | |
cfee10a7 | 213 | const char *error_string; |
160b81ed PYH |
214 | unsigned int skip_update:1, |
215 | did_not_exist:1; | |
5dbd7676 | 216 | int index; |
eb1af2df LT |
217 | unsigned char old_sha1[20]; |
218 | unsigned char new_sha1[20]; | |
8f1d2e6f | 219 | char ref_name[FLEX_ARRAY]; /* more */ |
575f4974 LT |
220 | }; |
221 | ||
466dbc42 SP |
222 | static void rp_error(const char *err, ...) __attribute__((format (printf, 1, 2))); |
223 | static void rp_warning(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
224 | ||
225 | static void report_message(const char *prefix, const char *err, va_list params) | |
226 | { | |
227 | int sz = strlen(prefix); | |
228 | char msg[4096]; | |
229 | ||
230 | strncpy(msg, prefix, sz); | |
231 | sz += vsnprintf(msg + sz, sizeof(msg) - sz, err, params); | |
232 | if (sz > (sizeof(msg) - 1)) | |
233 | sz = sizeof(msg) - 1; | |
234 | msg[sz++] = '\n'; | |
235 | ||
236 | if (use_sideband) | |
237 | send_sideband(1, 2, msg, sz, use_sideband); | |
238 | else | |
239 | xwrite(2, msg, sz); | |
240 | } | |
241 | ||
242 | static void rp_warning(const char *err, ...) | |
243 | { | |
244 | va_list params; | |
245 | va_start(params, err); | |
246 | report_message("warning: ", err, params); | |
247 | va_end(params); | |
248 | } | |
249 | ||
250 | static void rp_error(const char *err, ...) | |
251 | { | |
252 | va_list params; | |
253 | va_start(params, err); | |
254 | report_message("error: ", err, params); | |
255 | va_end(params); | |
256 | } | |
257 | ||
6d525d38 SP |
258 | static int copy_to_sideband(int in, int out, void *arg) |
259 | { | |
260 | char data[128]; | |
261 | while (1) { | |
262 | ssize_t sz = xread(in, data, sizeof(data)); | |
263 | if (sz <= 0) | |
264 | break; | |
265 | send_sideband(1, 2, data, sz, use_sideband); | |
266 | } | |
267 | close(in); | |
268 | return 0; | |
269 | } | |
270 | ||
a85b377d JH |
271 | static void prepare_push_cert_sha1(struct child_process *proc) |
272 | { | |
273 | static int already_done; | |
274 | struct argv_array env = ARGV_ARRAY_INIT; | |
275 | ||
276 | if (!push_cert.len) | |
277 | return; | |
278 | ||
279 | if (!already_done) { | |
280 | already_done = 1; | |
281 | if (write_sha1_file(push_cert.buf, push_cert.len, "blob", push_cert_sha1)) | |
282 | hashclr(push_cert_sha1); | |
283 | } | |
284 | if (!is_null_sha1(push_cert_sha1)) { | |
285 | argv_array_pushf(&env, "GIT_PUSH_CERT=%s", sha1_to_hex(push_cert_sha1)); | |
286 | proc->env = env.argv; | |
287 | } | |
288 | } | |
289 | ||
9684e44a JH |
290 | typedef int (*feed_fn)(void *, const char **, size_t *); |
291 | static int run_and_feed_hook(const char *hook_name, feed_fn feed, void *feed_state) | |
b1bf95bb | 292 | { |
f43cd49f | 293 | struct child_process proc; |
6d525d38 | 294 | struct async muxer; |
f43cd49f | 295 | const char *argv[2]; |
9684e44a | 296 | int code; |
b1bf95bb | 297 | |
5a7da2dc AS |
298 | argv[0] = find_hook(hook_name); |
299 | if (!argv[0]) | |
b1bf95bb | 300 | return 0; |
c8dd2771 | 301 | |
f43cd49f SP |
302 | argv[1] = NULL; |
303 | ||
304 | memset(&proc, 0, sizeof(proc)); | |
305 | proc.argv = argv; | |
306 | proc.in = -1; | |
307 | proc.stdout_to_stderr = 1; | |
308 | ||
a85b377d JH |
309 | prepare_push_cert_sha1(&proc); |
310 | ||
6d525d38 SP |
311 | if (use_sideband) { |
312 | memset(&muxer, 0, sizeof(muxer)); | |
313 | muxer.proc = copy_to_sideband; | |
314 | muxer.in = -1; | |
315 | code = start_async(&muxer); | |
316 | if (code) | |
317 | return code; | |
318 | proc.err = muxer.in; | |
319 | } | |
320 | ||
f43cd49f | 321 | code = start_command(&proc); |
6d525d38 SP |
322 | if (code) { |
323 | if (use_sideband) | |
324 | finish_async(&muxer); | |
90e41a89 | 325 | return code; |
6d525d38 SP |
326 | } |
327 | ||
9684e44a JH |
328 | while (1) { |
329 | const char *buf; | |
330 | size_t n; | |
331 | if (feed(feed_state, &buf, &n)) | |
332 | break; | |
333 | if (write_in_full(proc.in, buf, n) != n) | |
334 | break; | |
c8dd2771 | 335 | } |
e72ae288 | 336 | close(proc.in); |
6d525d38 SP |
337 | if (use_sideband) |
338 | finish_async(&muxer); | |
90e41a89 | 339 | return finish_command(&proc); |
b1bf95bb JW |
340 | } |
341 | ||
9684e44a JH |
342 | struct receive_hook_feed_state { |
343 | struct command *cmd; | |
cdc2b2f3 | 344 | int skip_broken; |
9684e44a JH |
345 | struct strbuf buf; |
346 | }; | |
347 | ||
348 | static int feed_receive_hook(void *state_, const char **bufp, size_t *sizep) | |
349 | { | |
350 | struct receive_hook_feed_state *state = state_; | |
351 | struct command *cmd = state->cmd; | |
352 | ||
cdc2b2f3 JH |
353 | while (cmd && |
354 | state->skip_broken && (cmd->error_string || cmd->did_not_exist)) | |
9684e44a JH |
355 | cmd = cmd->next; |
356 | if (!cmd) | |
357 | return -1; /* EOF */ | |
358 | strbuf_reset(&state->buf); | |
359 | strbuf_addf(&state->buf, "%s %s %s\n", | |
360 | sha1_to_hex(cmd->old_sha1), sha1_to_hex(cmd->new_sha1), | |
361 | cmd->ref_name); | |
362 | state->cmd = cmd->next; | |
363 | if (bufp) { | |
364 | *bufp = state->buf.buf; | |
365 | *sizep = state->buf.len; | |
366 | } | |
367 | return 0; | |
368 | } | |
369 | ||
cdc2b2f3 JH |
370 | static int run_receive_hook(struct command *commands, const char *hook_name, |
371 | int skip_broken) | |
9684e44a JH |
372 | { |
373 | struct receive_hook_feed_state state; | |
374 | int status; | |
375 | ||
376 | strbuf_init(&state.buf, 0); | |
377 | state.cmd = commands; | |
cdc2b2f3 | 378 | state.skip_broken = skip_broken; |
9684e44a JH |
379 | if (feed_receive_hook(&state, NULL, NULL)) |
380 | return 0; | |
381 | state.cmd = commands; | |
382 | status = run_and_feed_hook(hook_name, feed_receive_hook, &state); | |
383 | strbuf_release(&state.buf); | |
384 | return status; | |
385 | } | |
386 | ||
1d9e8b56 SP |
387 | static int run_update_hook(struct command *cmd) |
388 | { | |
1d9e8b56 | 389 | const char *argv[5]; |
6d525d38 SP |
390 | struct child_process proc; |
391 | int code; | |
1d9e8b56 | 392 | |
5a7da2dc AS |
393 | argv[0] = find_hook("update"); |
394 | if (!argv[0]) | |
1d9e8b56 SP |
395 | return 0; |
396 | ||
1d9e8b56 SP |
397 | argv[1] = cmd->ref_name; |
398 | argv[2] = sha1_to_hex(cmd->old_sha1); | |
399 | argv[3] = sha1_to_hex(cmd->new_sha1); | |
400 | argv[4] = NULL; | |
401 | ||
6d525d38 SP |
402 | memset(&proc, 0, sizeof(proc)); |
403 | proc.no_stdin = 1; | |
404 | proc.stdout_to_stderr = 1; | |
405 | proc.err = use_sideband ? -1 : 0; | |
406 | proc.argv = argv; | |
407 | ||
408 | code = start_command(&proc); | |
409 | if (code) | |
410 | return code; | |
411 | if (use_sideband) | |
412 | copy_to_sideband(proc.err, -1, NULL); | |
413 | return finish_command(&proc); | |
1d9e8b56 SP |
414 | } |
415 | ||
986e8239 JK |
416 | static int is_ref_checked_out(const char *ref) |
417 | { | |
986e8239 JK |
418 | if (is_bare_repository()) |
419 | return 0; | |
420 | ||
747ca245 | 421 | if (!head_name) |
986e8239 | 422 | return 0; |
747ca245 | 423 | return !strcmp(head_name, ref); |
986e8239 JK |
424 | } |
425 | ||
acd2a45b JH |
426 | static char *refuse_unconfigured_deny_msg[] = { |
427 | "By default, updating the current branch in a non-bare repository", | |
428 | "is denied, because it will make the index and work tree inconsistent", | |
429 | "with what you pushed, and will require 'git reset --hard' to match", | |
430 | "the work tree to HEAD.", | |
3d95d92b JH |
431 | "", |
432 | "You can set 'receive.denyCurrentBranch' configuration variable to", | |
acd2a45b JH |
433 | "'ignore' or 'warn' in the remote repository to allow pushing into", |
434 | "its current branch; however, this is not recommended unless you", | |
435 | "arranged to update its work tree to match what you pushed in some", | |
436 | "other way.", | |
3d95d92b | 437 | "", |
acd2a45b JH |
438 | "To squelch this message and still keep the default behaviour, set", |
439 | "'receive.denyCurrentBranch' configuration variable to 'refuse'." | |
3d95d92b JH |
440 | }; |
441 | ||
acd2a45b | 442 | static void refuse_unconfigured_deny(void) |
3d95d92b JH |
443 | { |
444 | int i; | |
acd2a45b | 445 | for (i = 0; i < ARRAY_SIZE(refuse_unconfigured_deny_msg); i++) |
a886ba28 | 446 | rp_error("%s", refuse_unconfigured_deny_msg[i]); |
3d95d92b JH |
447 | } |
448 | ||
375881fa JH |
449 | static char *refuse_unconfigured_deny_delete_current_msg[] = { |
450 | "By default, deleting the current branch is denied, because the next", | |
451 | "'git clone' won't result in any file checked out, causing confusion.", | |
747ca245 JH |
452 | "", |
453 | "You can set 'receive.denyDeleteCurrent' configuration variable to", | |
375881fa JH |
454 | "'warn' or 'ignore' in the remote repository to allow deleting the", |
455 | "current branch, with or without a warning message.", | |
747ca245 | 456 | "", |
375881fa | 457 | "To squelch this message, you can set it to 'refuse'." |
747ca245 JH |
458 | }; |
459 | ||
375881fa | 460 | static void refuse_unconfigured_deny_delete_current(void) |
747ca245 JH |
461 | { |
462 | int i; | |
463 | for (i = 0; | |
375881fa | 464 | i < ARRAY_SIZE(refuse_unconfigured_deny_delete_current_msg); |
747ca245 | 465 | i++) |
a886ba28 | 466 | rp_error("%s", refuse_unconfigured_deny_delete_current_msg[i]); |
747ca245 JH |
467 | } |
468 | ||
0a1bc12b NTND |
469 | static int command_singleton_iterator(void *cb_data, unsigned char sha1[20]); |
470 | static int update_shallow_ref(struct command *cmd, struct shallow_info *si) | |
471 | { | |
472 | static struct lock_file shallow_lock; | |
473 | struct sha1_array extra = SHA1_ARRAY_INIT; | |
474 | const char *alt_file; | |
475 | uint32_t mask = 1 << (cmd->index % 32); | |
476 | int i; | |
477 | ||
6aa30857 | 478 | trace_printf_key(&trace_shallow, |
0a1bc12b NTND |
479 | "shallow: update_shallow_ref %s\n", cmd->ref_name); |
480 | for (i = 0; i < si->shallow->nr; i++) | |
481 | if (si->used_shallow[i] && | |
482 | (si->used_shallow[i][cmd->index / 32] & mask) && | |
483 | !delayed_reachability_test(si, i)) | |
484 | sha1_array_append(&extra, si->shallow->sha1[i]); | |
485 | ||
486 | setup_alternate_shallow(&shallow_lock, &alt_file, &extra); | |
487 | if (check_shallow_connected(command_singleton_iterator, | |
488 | 0, cmd, alt_file)) { | |
489 | rollback_lock_file(&shallow_lock); | |
490 | sha1_array_clear(&extra); | |
491 | return -1; | |
492 | } | |
493 | ||
494 | commit_lock_file(&shallow_lock); | |
495 | ||
496 | /* | |
497 | * Make sure setup_alternate_shallow() for the next ref does | |
498 | * not lose these new roots.. | |
499 | */ | |
500 | for (i = 0; i < extra.nr; i++) | |
501 | register_shallow(extra.sha1[i]); | |
502 | ||
503 | si->shallow_ref[cmd->index] = 0; | |
504 | sha1_array_clear(&extra); | |
505 | return 0; | |
506 | } | |
507 | ||
508 | static const char *update(struct command *cmd, struct shallow_info *si) | |
2eca23da | 509 | { |
cfee10a7 | 510 | const char *name = cmd->ref_name; |
6b01ecfe JT |
511 | struct strbuf namespaced_name_buf = STRBUF_INIT; |
512 | const char *namespaced_name; | |
cfee10a7 JH |
513 | unsigned char *old_sha1 = cmd->old_sha1; |
514 | unsigned char *new_sha1 = cmd->new_sha1; | |
3159c8dc | 515 | struct ref_lock *lock; |
2eca23da | 516 | |
061d6b9a | 517 | /* only refs/... are allowed */ |
59556548 | 518 | if (!starts_with(name, "refs/") || check_refname_format(name + 5, 0)) { |
466dbc42 | 519 | rp_error("refusing to create funny ref '%s' remotely", name); |
8aaf7d64 | 520 | return "funny refname"; |
cfee10a7 | 521 | } |
d8a1deec | 522 | |
6b01ecfe JT |
523 | strbuf_addf(&namespaced_name_buf, "%s%s", get_git_namespace(), name); |
524 | namespaced_name = strbuf_detach(&namespaced_name_buf, NULL); | |
525 | ||
526 | if (is_ref_checked_out(namespaced_name)) { | |
3d95d92b JH |
527 | switch (deny_current_branch) { |
528 | case DENY_IGNORE: | |
986e8239 | 529 | break; |
3d95d92b | 530 | case DENY_WARN: |
466dbc42 | 531 | rp_warning("updating the current branch"); |
986e8239 | 532 | break; |
3d95d92b | 533 | case DENY_REFUSE: |
acd2a45b | 534 | case DENY_UNCONFIGURED: |
466dbc42 | 535 | rp_error("refusing to update checked out branch: %s", name); |
acd2a45b JH |
536 | if (deny_current_branch == DENY_UNCONFIGURED) |
537 | refuse_unconfigured_deny(); | |
3d95d92b JH |
538 | return "branch is currently checked out"; |
539 | } | |
986e8239 JK |
540 | } |
541 | ||
d4f694ba | 542 | if (!is_null_sha1(new_sha1) && !has_sha1_file(new_sha1)) { |
8aaf7d64 SP |
543 | error("unpack should have generated %s, " |
544 | "but I can't find it!", sha1_to_hex(new_sha1)); | |
545 | return "bad pack"; | |
cfee10a7 | 546 | } |
747ca245 JH |
547 | |
548 | if (!is_null_sha1(old_sha1) && is_null_sha1(new_sha1)) { | |
59556548 | 549 | if (deny_deletes && starts_with(name, "refs/heads/")) { |
466dbc42 | 550 | rp_error("denying ref deletion for %s", name); |
747ca245 JH |
551 | return "deletion prohibited"; |
552 | } | |
553 | ||
6b01ecfe | 554 | if (!strcmp(namespaced_name, head_name)) { |
747ca245 JH |
555 | switch (deny_delete_current) { |
556 | case DENY_IGNORE: | |
557 | break; | |
558 | case DENY_WARN: | |
466dbc42 | 559 | rp_warning("deleting the current branch"); |
747ca245 JH |
560 | break; |
561 | case DENY_REFUSE: | |
375881fa JH |
562 | case DENY_UNCONFIGURED: |
563 | if (deny_delete_current == DENY_UNCONFIGURED) | |
564 | refuse_unconfigured_deny_delete_current(); | |
466dbc42 | 565 | rp_error("refusing to delete the current branch: %s", name); |
747ca245 JH |
566 | return "deletion of the current branch prohibited"; |
567 | } | |
568 | } | |
a240de11 | 569 | } |
747ca245 | 570 | |
d4f694ba | 571 | if (deny_non_fast_forwards && !is_null_sha1(new_sha1) && |
ba988a83 | 572 | !is_null_sha1(old_sha1) && |
59556548 | 573 | starts_with(name, "refs/heads/")) { |
eab82707 | 574 | struct object *old_object, *new_object; |
11031d7e | 575 | struct commit *old_commit, *new_commit; |
11031d7e | 576 | |
eab82707 MK |
577 | old_object = parse_object(old_sha1); |
578 | new_object = parse_object(new_sha1); | |
579 | ||
580 | if (!old_object || !new_object || | |
581 | old_object->type != OBJ_COMMIT || | |
582 | new_object->type != OBJ_COMMIT) { | |
583 | error("bad sha1 objects for %s", name); | |
584 | return "bad ref"; | |
585 | } | |
586 | old_commit = (struct commit *)old_object; | |
587 | new_commit = (struct commit *)new_object; | |
5d55915c | 588 | if (!in_merge_bases(old_commit, new_commit)) { |
466dbc42 SP |
589 | rp_error("denying non-fast-forward %s" |
590 | " (you should pull first)", name); | |
a75d7b54 | 591 | return "non-fast-forward"; |
8aaf7d64 | 592 | } |
11031d7e | 593 | } |
1d9e8b56 | 594 | if (run_update_hook(cmd)) { |
466dbc42 | 595 | rp_error("hook declined to update %s", name); |
8aaf7d64 | 596 | return "hook declined"; |
b1bf95bb | 597 | } |
3159c8dc | 598 | |
d4f694ba | 599 | if (is_null_sha1(new_sha1)) { |
28391a80 | 600 | if (!parse_object(old_sha1)) { |
28391a80 | 601 | old_sha1 = NULL; |
160b81ed PYH |
602 | if (ref_exists(name)) { |
603 | rp_warning("Allowing deletion of corrupt ref."); | |
604 | } else { | |
605 | rp_warning("Deleting a non-existent ref."); | |
606 | cmd->did_not_exist = 1; | |
607 | } | |
28391a80 | 608 | } |
6b01ecfe | 609 | if (delete_ref(namespaced_name, old_sha1, 0)) { |
466dbc42 | 610 | rp_error("failed to delete %s", name); |
8aaf7d64 | 611 | return "failed to delete"; |
d4f694ba | 612 | } |
8aaf7d64 | 613 | return NULL; /* good */ |
d4f694ba JH |
614 | } |
615 | else { | |
0a1bc12b NTND |
616 | if (shallow_update && si->shallow_ref[cmd->index] && |
617 | update_shallow_ref(cmd, si)) | |
618 | return "shallow error"; | |
619 | ||
9bbb0fa1 BK |
620 | lock = lock_any_ref_for_update(namespaced_name, old_sha1, |
621 | 0, NULL); | |
d4f694ba | 622 | if (!lock) { |
466dbc42 | 623 | rp_error("failed to lock %s", name); |
8aaf7d64 | 624 | return "failed to lock"; |
d4f694ba | 625 | } |
ef203f08 | 626 | if (write_ref_sha1(lock, new_sha1, "push")) { |
8aaf7d64 | 627 | return "failed to write"; /* error() already called */ |
ef203f08 | 628 | } |
8aaf7d64 | 629 | return NULL; /* good */ |
19614330 | 630 | } |
2eca23da LT |
631 | } |
632 | ||
5e1c71fd | 633 | static void run_update_post_hook(struct command *commands) |
19614330 | 634 | { |
5e1c71fd | 635 | struct command *cmd; |
6d525d38 | 636 | int argc; |
9201c707 | 637 | const char **argv; |
6d525d38 | 638 | struct child_process proc; |
5a7da2dc | 639 | char *hook; |
19614330 | 640 | |
5a7da2dc | 641 | hook = find_hook("post-update"); |
5e1c71fd | 642 | for (argc = 0, cmd = commands; cmd; cmd = cmd->next) { |
160b81ed | 643 | if (cmd->error_string || cmd->did_not_exist) |
19614330 JH |
644 | continue; |
645 | argc++; | |
646 | } | |
5a7da2dc | 647 | if (!argc || !hook) |
3e6e152c | 648 | return; |
5a7da2dc | 649 | |
3e6e152c | 650 | argv = xmalloc(sizeof(*argv) * (2 + argc)); |
5a7da2dc | 651 | argv[0] = hook; |
19614330 | 652 | |
5e1c71fd | 653 | for (argc = 1, cmd = commands; cmd; cmd = cmd->next) { |
160b81ed | 654 | if (cmd->error_string || cmd->did_not_exist) |
19614330 | 655 | continue; |
95244ae3 | 656 | argv[argc] = xstrdup(cmd->ref_name); |
19614330 JH |
657 | argc++; |
658 | } | |
659 | argv[argc] = NULL; | |
6d525d38 SP |
660 | |
661 | memset(&proc, 0, sizeof(proc)); | |
662 | proc.no_stdin = 1; | |
663 | proc.stdout_to_stderr = 1; | |
664 | proc.err = use_sideband ? -1 : 0; | |
665 | proc.argv = argv; | |
666 | ||
667 | if (!start_command(&proc)) { | |
668 | if (use_sideband) | |
669 | copy_to_sideband(proc.err, -1, NULL); | |
670 | finish_command(&proc); | |
671 | } | |
19614330 | 672 | } |
2eca23da | 673 | |
da3efdb1 JS |
674 | static void check_aliased_update(struct command *cmd, struct string_list *list) |
675 | { | |
6b01ecfe JT |
676 | struct strbuf buf = STRBUF_INIT; |
677 | const char *dst_name; | |
da3efdb1 JS |
678 | struct string_list_item *item; |
679 | struct command *dst_cmd; | |
680 | unsigned char sha1[20]; | |
681 | char cmd_oldh[41], cmd_newh[41], dst_oldh[41], dst_newh[41]; | |
682 | int flag; | |
683 | ||
6b01ecfe | 684 | strbuf_addf(&buf, "%s%s", get_git_namespace(), cmd->ref_name); |
8cad4744 | 685 | dst_name = resolve_ref_unsafe(buf.buf, sha1, 0, &flag); |
6b01ecfe | 686 | strbuf_release(&buf); |
da3efdb1 JS |
687 | |
688 | if (!(flag & REF_ISSYMREF)) | |
689 | return; | |
690 | ||
6b01ecfe JT |
691 | dst_name = strip_namespace(dst_name); |
692 | if (!dst_name) { | |
693 | rp_error("refusing update to broken symref '%s'", cmd->ref_name); | |
694 | cmd->skip_update = 1; | |
695 | cmd->error_string = "broken symref"; | |
696 | return; | |
697 | } | |
698 | ||
e8c8b713 | 699 | if ((item = string_list_lookup(list, dst_name)) == NULL) |
da3efdb1 JS |
700 | return; |
701 | ||
702 | cmd->skip_update = 1; | |
703 | ||
704 | dst_cmd = (struct command *) item->util; | |
705 | ||
706 | if (!hashcmp(cmd->old_sha1, dst_cmd->old_sha1) && | |
707 | !hashcmp(cmd->new_sha1, dst_cmd->new_sha1)) | |
708 | return; | |
709 | ||
710 | dst_cmd->skip_update = 1; | |
711 | ||
712 | strcpy(cmd_oldh, find_unique_abbrev(cmd->old_sha1, DEFAULT_ABBREV)); | |
0e71bc30 | 713 | strcpy(cmd_newh, find_unique_abbrev(cmd->new_sha1, DEFAULT_ABBREV)); |
da3efdb1 | 714 | strcpy(dst_oldh, find_unique_abbrev(dst_cmd->old_sha1, DEFAULT_ABBREV)); |
0e71bc30 | 715 | strcpy(dst_newh, find_unique_abbrev(dst_cmd->new_sha1, DEFAULT_ABBREV)); |
da3efdb1 JS |
716 | rp_error("refusing inconsistent update between symref '%s' (%s..%s) and" |
717 | " its target '%s' (%s..%s)", | |
718 | cmd->ref_name, cmd_oldh, cmd_newh, | |
719 | dst_cmd->ref_name, dst_oldh, dst_newh); | |
720 | ||
721 | cmd->error_string = dst_cmd->error_string = | |
722 | "inconsistent aliased update"; | |
723 | } | |
724 | ||
725 | static void check_aliased_updates(struct command *commands) | |
726 | { | |
727 | struct command *cmd; | |
183113a5 | 728 | struct string_list ref_list = STRING_LIST_INIT_NODUP; |
da3efdb1 JS |
729 | |
730 | for (cmd = commands; cmd; cmd = cmd->next) { | |
731 | struct string_list_item *item = | |
1d2f80fa | 732 | string_list_append(&ref_list, cmd->ref_name); |
da3efdb1 JS |
733 | item->util = (void *)cmd; |
734 | } | |
735 | sort_string_list(&ref_list); | |
736 | ||
ef7e93d9 CB |
737 | for (cmd = commands; cmd; cmd = cmd->next) { |
738 | if (!cmd->error_string) | |
739 | check_aliased_update(cmd, &ref_list); | |
740 | } | |
da3efdb1 JS |
741 | |
742 | string_list_clear(&ref_list, 0); | |
743 | } | |
744 | ||
52fed6e1 JH |
745 | static int command_singleton_iterator(void *cb_data, unsigned char sha1[20]) |
746 | { | |
747 | struct command **cmd_list = cb_data; | |
748 | struct command *cmd = *cmd_list; | |
749 | ||
ee6dfb2d | 750 | if (!cmd || is_null_sha1(cmd->new_sha1)) |
52fed6e1 JH |
751 | return -1; /* end of list */ |
752 | *cmd_list = NULL; /* this returns only one */ | |
753 | hashcpy(sha1, cmd->new_sha1); | |
754 | return 0; | |
755 | } | |
756 | ||
0a1bc12b NTND |
757 | static void set_connectivity_errors(struct command *commands, |
758 | struct shallow_info *si) | |
52fed6e1 JH |
759 | { |
760 | struct command *cmd; | |
761 | ||
762 | for (cmd = commands; cmd; cmd = cmd->next) { | |
763 | struct command *singleton = cmd; | |
0a1bc12b NTND |
764 | if (shallow_update && si->shallow_ref[cmd->index]) |
765 | /* to be checked in update_shallow_ref() */ | |
766 | continue; | |
52fed6e1 JH |
767 | if (!check_everything_connected(command_singleton_iterator, |
768 | 0, &singleton)) | |
769 | continue; | |
770 | cmd->error_string = "missing necessary objects"; | |
771 | } | |
772 | } | |
773 | ||
0a1bc12b NTND |
774 | struct iterate_data { |
775 | struct command *cmds; | |
776 | struct shallow_info *si; | |
777 | }; | |
778 | ||
52fed6e1 JH |
779 | static int iterate_receive_command_list(void *cb_data, unsigned char sha1[20]) |
780 | { | |
0a1bc12b NTND |
781 | struct iterate_data *data = cb_data; |
782 | struct command **cmd_list = &data->cmds; | |
52fed6e1 JH |
783 | struct command *cmd = *cmd_list; |
784 | ||
0a1bc12b NTND |
785 | for (; cmd; cmd = cmd->next) { |
786 | if (shallow_update && data->si->shallow_ref[cmd->index]) | |
787 | /* to be checked in update_shallow_ref() */ | |
788 | continue; | |
5dbd7676 | 789 | if (!is_null_sha1(cmd->new_sha1) && !cmd->skip_update) { |
ee6dfb2d JH |
790 | hashcpy(sha1, cmd->new_sha1); |
791 | *cmd_list = cmd->next; | |
792 | return 0; | |
793 | } | |
ee6dfb2d JH |
794 | } |
795 | *cmd_list = NULL; | |
796 | return -1; /* end of list */ | |
52fed6e1 JH |
797 | } |
798 | ||
daebaa78 JH |
799 | static void reject_updates_to_hidden(struct command *commands) |
800 | { | |
801 | struct command *cmd; | |
802 | ||
803 | for (cmd = commands; cmd; cmd = cmd->next) { | |
804 | if (cmd->error_string || !ref_is_hidden(cmd->ref_name)) | |
805 | continue; | |
806 | if (is_null_sha1(cmd->new_sha1)) | |
807 | cmd->error_string = "deny deleting a hidden ref"; | |
808 | else | |
809 | cmd->error_string = "deny updating a hidden ref"; | |
810 | } | |
811 | } | |
812 | ||
0a1bc12b NTND |
813 | static void execute_commands(struct command *commands, |
814 | const char *unpacker_error, | |
815 | struct shallow_info *si) | |
575f4974 | 816 | { |
0a1bc12b | 817 | int checked_connectivity; |
5e1c71fd | 818 | struct command *cmd; |
747ca245 | 819 | unsigned char sha1[20]; |
0a1bc12b | 820 | struct iterate_data data; |
8aaf7d64 SP |
821 | |
822 | if (unpacker_error) { | |
5e1c71fd | 823 | for (cmd = commands; cmd; cmd = cmd->next) |
74eb32d3 | 824 | cmd->error_string = "unpacker error"; |
8aaf7d64 SP |
825 | return; |
826 | } | |
827 | ||
0a1bc12b NTND |
828 | data.cmds = commands; |
829 | data.si = si; | |
830 | if (check_everything_connected(iterate_receive_command_list, 0, &data)) | |
831 | set_connectivity_errors(commands, si); | |
52fed6e1 | 832 | |
daebaa78 JH |
833 | reject_updates_to_hidden(commands); |
834 | ||
5a7da2dc | 835 | if (run_receive_hook(commands, "pre-receive", 0)) { |
ef7e93d9 CB |
836 | for (cmd = commands; cmd; cmd = cmd->next) { |
837 | if (!cmd->error_string) | |
838 | cmd->error_string = "pre-receive hook declined"; | |
839 | } | |
05ef58ec SP |
840 | return; |
841 | } | |
842 | ||
da3efdb1 JS |
843 | check_aliased_updates(commands); |
844 | ||
96ec7b1e NTND |
845 | free(head_name_to_free); |
846 | head_name = head_name_to_free = resolve_refdup("HEAD", sha1, 0, NULL); | |
747ca245 | 847 | |
0a1bc12b | 848 | checked_connectivity = 1; |
ef7e93d9 CB |
849 | for (cmd = commands; cmd; cmd = cmd->next) { |
850 | if (cmd->error_string) | |
851 | continue; | |
852 | ||
853 | if (cmd->skip_update) | |
854 | continue; | |
855 | ||
0a1bc12b NTND |
856 | cmd->error_string = update(cmd, si); |
857 | if (shallow_update && !cmd->error_string && | |
858 | si->shallow_ref[cmd->index]) { | |
859 | error("BUG: connectivity check has not been run on ref %s", | |
860 | cmd->ref_name); | |
861 | checked_connectivity = 0; | |
862 | } | |
863 | } | |
864 | ||
0179c945 JK |
865 | if (shallow_update && !checked_connectivity) |
866 | error("BUG: run 'git fsck' for safety.\n" | |
867 | "If there are errors, try to remove " | |
868 | "the reported refs above"); | |
575f4974 LT |
869 | } |
870 | ||
39895c74 JH |
871 | static struct command **queue_command(struct command **tail, |
872 | const char *line, | |
873 | int linelen) | |
874 | { | |
875 | unsigned char old_sha1[20], new_sha1[20]; | |
876 | struct command *cmd; | |
877 | const char *refname; | |
878 | int reflen; | |
879 | ||
880 | if (linelen < 83 || | |
881 | line[40] != ' ' || | |
882 | line[81] != ' ' || | |
883 | get_sha1_hex(line, old_sha1) || | |
884 | get_sha1_hex(line + 41, new_sha1)) | |
885 | die("protocol error: expected old/new/ref, got '%s'", line); | |
886 | ||
887 | refname = line + 82; | |
888 | reflen = linelen - 82; | |
889 | cmd = xcalloc(1, sizeof(struct command) + reflen + 1); | |
890 | hashcpy(cmd->old_sha1, old_sha1); | |
891 | hashcpy(cmd->new_sha1, new_sha1); | |
892 | memcpy(cmd->ref_name, refname, reflen); | |
893 | cmd->ref_name[reflen] = '\0'; | |
894 | *tail = cmd; | |
895 | return &cmd->next; | |
896 | } | |
897 | ||
5dbd7676 | 898 | static struct command *read_head_info(struct sha1_array *shallow) |
575f4974 | 899 | { |
5e1c71fd | 900 | struct command *commands = NULL; |
eb1af2df | 901 | struct command **p = &commands; |
575f4974 | 902 | for (;;) { |
74543a04 | 903 | char *line; |
39895c74 | 904 | int len, linelen; |
eb1af2df | 905 | |
74543a04 JK |
906 | line = packet_read_line(0, &len); |
907 | if (!line) | |
575f4974 | 908 | break; |
5dbd7676 | 909 | |
92251b1b | 910 | if (len == 48 && starts_with(line, "shallow ")) { |
c09b71cc JH |
911 | unsigned char sha1[20]; |
912 | if (get_sha1_hex(line + 8, sha1)) | |
913 | die("protocol error: expected shallow sha, got '%s'", | |
914 | line + 8); | |
915 | sha1_array_append(shallow, sha1); | |
5dbd7676 NTND |
916 | continue; |
917 | } | |
918 | ||
0e3c339b JH |
919 | linelen = strlen(line); |
920 | if (linelen < len) { | |
921 | const char *feature_list = line + linelen + 1; | |
922 | if (parse_feature_request(feature_list, "report-status")) | |
923 | report_status = 1; | |
924 | if (parse_feature_request(feature_list, "side-band-64k")) | |
925 | use_sideband = LARGE_PACKET_MAX; | |
926 | if (parse_feature_request(feature_list, "quiet")) | |
927 | quiet = 1; | |
928 | } | |
929 | ||
a85b377d JH |
930 | if (!strcmp(line, "push-cert")) { |
931 | int true_flush = 0; | |
932 | char certbuf[1024]; | |
933 | ||
934 | for (;;) { | |
935 | len = packet_read(0, NULL, NULL, | |
936 | certbuf, sizeof(certbuf), 0); | |
937 | if (!len) { | |
938 | true_flush = 1; | |
939 | break; | |
940 | } | |
941 | if (!strcmp(certbuf, "push-cert-end\n")) | |
942 | break; /* end of cert */ | |
943 | strbuf_addstr(&push_cert, certbuf); | |
944 | } | |
945 | ||
946 | if (true_flush) | |
947 | break; | |
948 | continue; | |
949 | } | |
950 | ||
39895c74 | 951 | p = queue_command(p, line, linelen); |
575f4974 | 952 | } |
5e1c71fd | 953 | return commands; |
575f4974 LT |
954 | } |
955 | ||
fc04c412 SP |
956 | static const char *parse_pack_header(struct pack_header *hdr) |
957 | { | |
a69e5429 JH |
958 | switch (read_pack_header(0, hdr)) { |
959 | case PH_ERROR_EOF: | |
960 | return "eof before pack header was fully read"; | |
961 | ||
962 | case PH_ERROR_PACK_SIGNATURE: | |
fc04c412 | 963 | return "protocol error (pack signature mismatch detected)"; |
a69e5429 JH |
964 | |
965 | case PH_ERROR_PROTOCOL: | |
fc04c412 | 966 | return "protocol error (pack version unsupported)"; |
a69e5429 JH |
967 | |
968 | default: | |
969 | return "unknown error in parse_pack_header"; | |
970 | ||
971 | case 0: | |
972 | return NULL; | |
973 | } | |
fc04c412 SP |
974 | } |
975 | ||
576162a4 NP |
976 | static const char *pack_lockfile; |
977 | ||
5dbd7676 | 978 | static const char *unpack(int err_fd, struct shallow_info *si) |
575f4974 | 979 | { |
fc04c412 | 980 | struct pack_header hdr; |
31c42bff | 981 | struct argv_array av = ARGV_ARRAY_INIT; |
fc04c412 | 982 | const char *hdr_err; |
31c42bff | 983 | int status; |
fc04c412 | 984 | char hdr_arg[38]; |
31c42bff | 985 | struct child_process child; |
dab76d3a JH |
986 | int fsck_objects = (receive_fsck_objects >= 0 |
987 | ? receive_fsck_objects | |
988 | : transfer_fsck_objects >= 0 | |
989 | ? transfer_fsck_objects | |
990 | : 0); | |
fc04c412 SP |
991 | |
992 | hdr_err = parse_pack_header(&hdr); | |
49ecfa13 JK |
993 | if (hdr_err) { |
994 | if (err_fd > 0) | |
995 | close(err_fd); | |
fc04c412 | 996 | return hdr_err; |
49ecfa13 | 997 | } |
6e1c2344 RJ |
998 | snprintf(hdr_arg, sizeof(hdr_arg), |
999 | "--pack_header=%"PRIu32",%"PRIu32, | |
fc04c412 SP |
1000 | ntohl(hdr.hdr_version), ntohl(hdr.hdr_entries)); |
1001 | ||
5dbd7676 NTND |
1002 | if (si->nr_ours || si->nr_theirs) { |
1003 | alt_shallow_file = setup_temporary_shallow(si->shallow); | |
1004 | argv_array_pushl(&av, "--shallow-file", alt_shallow_file, NULL); | |
1005 | } | |
1006 | ||
31c42bff | 1007 | memset(&child, 0, sizeof(child)); |
fc04c412 | 1008 | if (ntohl(hdr.hdr_entries) < unpack_limit) { |
31c42bff | 1009 | argv_array_pushl(&av, "unpack-objects", hdr_arg, NULL); |
c207e34f | 1010 | if (quiet) |
31c42bff | 1011 | argv_array_push(&av, "-q"); |
dab76d3a | 1012 | if (fsck_objects) |
31c42bff NTND |
1013 | argv_array_push(&av, "--strict"); |
1014 | child.argv = av.argv; | |
59bfdfb8 | 1015 | child.no_stdout = 1; |
a22e6f85 | 1016 | child.err = err_fd; |
59bfdfb8 | 1017 | child.git_cmd = 1; |
31c42bff NTND |
1018 | status = run_command(&child); |
1019 | if (status) | |
1020 | return "unpack-objects abnormal exit"; | |
576162a4 | 1021 | } else { |
31c42bff | 1022 | int s; |
576162a4 | 1023 | char keep_arg[256]; |
576162a4 | 1024 | |
85e72830 | 1025 | s = sprintf(keep_arg, "--keep=receive-pack %"PRIuMAX" on ", (uintmax_t) getpid()); |
576162a4 NP |
1026 | if (gethostname(keep_arg + s, sizeof(keep_arg) - s)) |
1027 | strcpy(keep_arg + s, "localhost"); | |
1028 | ||
31c42bff NTND |
1029 | argv_array_pushl(&av, "index-pack", |
1030 | "--stdin", hdr_arg, keep_arg, NULL); | |
dab76d3a | 1031 | if (fsck_objects) |
31c42bff | 1032 | argv_array_push(&av, "--strict"); |
f7c815c3 | 1033 | if (fix_thin) |
31c42bff NTND |
1034 | argv_array_push(&av, "--fix-thin"); |
1035 | child.argv = av.argv; | |
1036 | child.out = -1; | |
1037 | child.err = err_fd; | |
1038 | child.git_cmd = 1; | |
1039 | status = start_command(&child); | |
1040 | if (status) | |
576162a4 | 1041 | return "index-pack fork failed"; |
31c42bff NTND |
1042 | pack_lockfile = index_pack_lockfile(child.out); |
1043 | close(child.out); | |
1044 | status = finish_command(&child); | |
1045 | if (status) | |
1046 | return "index-pack abnormal exit"; | |
1047 | reprepare_packed_git(); | |
cfee10a7 | 1048 | } |
31c42bff | 1049 | return NULL; |
cfee10a7 JH |
1050 | } |
1051 | ||
5dbd7676 | 1052 | static const char *unpack_with_sideband(struct shallow_info *si) |
a22e6f85 JK |
1053 | { |
1054 | struct async muxer; | |
1055 | const char *ret; | |
1056 | ||
1057 | if (!use_sideband) | |
5dbd7676 | 1058 | return unpack(0, si); |
a22e6f85 JK |
1059 | |
1060 | memset(&muxer, 0, sizeof(muxer)); | |
1061 | muxer.proc = copy_to_sideband; | |
1062 | muxer.in = -1; | |
1063 | if (start_async(&muxer)) | |
1064 | return NULL; | |
1065 | ||
5dbd7676 | 1066 | ret = unpack(muxer.in, si); |
a22e6f85 JK |
1067 | |
1068 | finish_async(&muxer); | |
1069 | return ret; | |
1070 | } | |
1071 | ||
0a1bc12b NTND |
1072 | static void prepare_shallow_update(struct command *commands, |
1073 | struct shallow_info *si) | |
1074 | { | |
1075 | int i, j, k, bitmap_size = (si->ref->nr + 31) / 32; | |
1076 | ||
1077 | si->used_shallow = xmalloc(sizeof(*si->used_shallow) * | |
1078 | si->shallow->nr); | |
1079 | assign_shallow_commits_to_refs(si, si->used_shallow, NULL); | |
1080 | ||
1081 | si->need_reachability_test = | |
1082 | xcalloc(si->shallow->nr, sizeof(*si->need_reachability_test)); | |
1083 | si->reachable = | |
1084 | xcalloc(si->shallow->nr, sizeof(*si->reachable)); | |
1085 | si->shallow_ref = xcalloc(si->ref->nr, sizeof(*si->shallow_ref)); | |
1086 | ||
1087 | for (i = 0; i < si->nr_ours; i++) | |
1088 | si->need_reachability_test[si->ours[i]] = 1; | |
1089 | ||
1090 | for (i = 0; i < si->shallow->nr; i++) { | |
1091 | if (!si->used_shallow[i]) | |
1092 | continue; | |
1093 | for (j = 0; j < bitmap_size; j++) { | |
1094 | if (!si->used_shallow[i][j]) | |
1095 | continue; | |
1096 | si->need_reachability_test[i]++; | |
1097 | for (k = 0; k < 32; k++) | |
1098 | if (si->used_shallow[i][j] & (1 << k)) | |
1099 | si->shallow_ref[j * 32 + k]++; | |
1100 | } | |
1101 | ||
1102 | /* | |
1103 | * true for those associated with some refs and belong | |
1104 | * in "ours" list aka "step 7 not done yet" | |
1105 | */ | |
1106 | si->need_reachability_test[i] = | |
1107 | si->need_reachability_test[i] > 1; | |
1108 | } | |
1109 | ||
1110 | /* | |
1111 | * keep hooks happy by forcing a temporary shallow file via | |
1112 | * env variable because we can't add --shallow-file to every | |
1113 | * command. check_everything_connected() will be done with | |
1114 | * true .git/shallow though. | |
1115 | */ | |
1116 | setenv(GIT_SHALLOW_FILE_ENVIRONMENT, alt_shallow_file, 1); | |
1117 | } | |
1118 | ||
5dbd7676 NTND |
1119 | static void update_shallow_info(struct command *commands, |
1120 | struct shallow_info *si, | |
1121 | struct sha1_array *ref) | |
1122 | { | |
1123 | struct command *cmd; | |
1124 | int *ref_status; | |
1125 | remove_nonexistent_theirs_shallow(si); | |
0a1bc12b NTND |
1126 | if (!si->nr_ours && !si->nr_theirs) { |
1127 | shallow_update = 0; | |
5dbd7676 | 1128 | return; |
0a1bc12b | 1129 | } |
5dbd7676 NTND |
1130 | |
1131 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1132 | if (is_null_sha1(cmd->new_sha1)) | |
1133 | continue; | |
1134 | sha1_array_append(ref, cmd->new_sha1); | |
1135 | cmd->index = ref->nr - 1; | |
1136 | } | |
1137 | si->ref = ref; | |
1138 | ||
0a1bc12b NTND |
1139 | if (shallow_update) { |
1140 | prepare_shallow_update(commands, si); | |
1141 | return; | |
1142 | } | |
1143 | ||
5dbd7676 NTND |
1144 | ref_status = xmalloc(sizeof(*ref_status) * ref->nr); |
1145 | assign_shallow_commits_to_refs(si, NULL, ref_status); | |
1146 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1147 | if (is_null_sha1(cmd->new_sha1)) | |
1148 | continue; | |
1149 | if (ref_status[cmd->index]) { | |
1150 | cmd->error_string = "shallow update not allowed"; | |
1151 | cmd->skip_update = 1; | |
1152 | } | |
1153 | } | |
5dbd7676 NTND |
1154 | free(ref_status); |
1155 | } | |
1156 | ||
5e1c71fd | 1157 | static void report(struct command *commands, const char *unpack_status) |
cfee10a7 JH |
1158 | { |
1159 | struct command *cmd; | |
38a81b4e SP |
1160 | struct strbuf buf = STRBUF_INIT; |
1161 | ||
1162 | packet_buf_write(&buf, "unpack %s\n", | |
1163 | unpack_status ? unpack_status : "ok"); | |
cfee10a7 JH |
1164 | for (cmd = commands; cmd; cmd = cmd->next) { |
1165 | if (!cmd->error_string) | |
38a81b4e SP |
1166 | packet_buf_write(&buf, "ok %s\n", |
1167 | cmd->ref_name); | |
cfee10a7 | 1168 | else |
38a81b4e SP |
1169 | packet_buf_write(&buf, "ng %s %s\n", |
1170 | cmd->ref_name, cmd->error_string); | |
575f4974 | 1171 | } |
38a81b4e SP |
1172 | packet_buf_flush(&buf); |
1173 | ||
1174 | if (use_sideband) | |
1175 | send_sideband(1, 1, buf.buf, buf.len, use_sideband); | |
1176 | else | |
cdf4fb8e | 1177 | write_or_die(1, buf.buf, buf.len); |
38a81b4e | 1178 | strbuf_release(&buf); |
575f4974 LT |
1179 | } |
1180 | ||
5e1c71fd | 1181 | static int delete_only(struct command *commands) |
d4f694ba | 1182 | { |
5e1c71fd JS |
1183 | struct command *cmd; |
1184 | for (cmd = commands; cmd; cmd = cmd->next) { | |
d4f694ba JH |
1185 | if (!is_null_sha1(cmd->new_sha1)) |
1186 | return 0; | |
d4f694ba JH |
1187 | } |
1188 | return 1; | |
1189 | } | |
1190 | ||
be5908ae | 1191 | int cmd_receive_pack(int argc, const char **argv, const char *prefix) |
575f4974 | 1192 | { |
42526b47 SP |
1193 | int advertise_refs = 0; |
1194 | int stateless_rpc = 0; | |
d0efc8a7 | 1195 | int i; |
d51428bf | 1196 | const char *dir = NULL; |
5e1c71fd | 1197 | struct command *commands; |
5dbd7676 NTND |
1198 | struct sha1_array shallow = SHA1_ARRAY_INIT; |
1199 | struct sha1_array ref = SHA1_ARRAY_INIT; | |
1200 | struct shallow_info si; | |
575f4974 | 1201 | |
bbc30f99 JK |
1202 | packet_trace_identity("receive-pack"); |
1203 | ||
575f4974 LT |
1204 | argv++; |
1205 | for (i = 1; i < argc; i++) { | |
be5908ae | 1206 | const char *arg = *argv++; |
575f4974 LT |
1207 | |
1208 | if (*arg == '-') { | |
c207e34f CB |
1209 | if (!strcmp(arg, "--quiet")) { |
1210 | quiet = 1; | |
1211 | continue; | |
1212 | } | |
1213 | ||
42526b47 SP |
1214 | if (!strcmp(arg, "--advertise-refs")) { |
1215 | advertise_refs = 1; | |
1216 | continue; | |
1217 | } | |
1218 | if (!strcmp(arg, "--stateless-rpc")) { | |
1219 | stateless_rpc = 1; | |
1220 | continue; | |
1221 | } | |
f7c815c3 NTND |
1222 | if (!strcmp(arg, "--reject-thin-pack-for-testing")) { |
1223 | fix_thin = 0; | |
1224 | continue; | |
1225 | } | |
42526b47 | 1226 | |
575f4974 LT |
1227 | usage(receive_pack_usage); |
1228 | } | |
d0efc8a7 LT |
1229 | if (dir) |
1230 | usage(receive_pack_usage); | |
d51428bf | 1231 | dir = arg; |
575f4974 LT |
1232 | } |
1233 | if (!dir) | |
1234 | usage(receive_pack_usage); | |
1235 | ||
e1464ca7 | 1236 | setup_path(); |
5c09f321 | 1237 | |
3159c8dc | 1238 | if (!enter_repo(dir, 0)) |
05ac6b34 | 1239 | die("'%s' does not appear to be a git repository", dir); |
575f4974 | 1240 | |
ef90d6d4 | 1241 | git_config(receive_pack_config, NULL); |
6fb75bed | 1242 | |
e28714c5 JH |
1243 | if (0 <= transfer_unpack_limit) |
1244 | unpack_limit = transfer_unpack_limit; | |
1245 | else if (0 <= receive_unpack_limit) | |
1246 | unpack_limit = receive_unpack_limit; | |
1247 | ||
42526b47 | 1248 | if (advertise_refs || !stateless_rpc) { |
42526b47 | 1249 | write_head_info(); |
42526b47 SP |
1250 | } |
1251 | if (advertise_refs) | |
1252 | return 0; | |
575f4974 | 1253 | |
5dbd7676 | 1254 | if ((commands = read_head_info(&shallow)) != NULL) { |
d4f694ba JH |
1255 | const char *unpack_status = NULL; |
1256 | ||
5dbd7676 | 1257 | prepare_shallow_info(&si, &shallow); |
0a1bc12b NTND |
1258 | if (!si.nr_ours && !si.nr_theirs) |
1259 | shallow_update = 0; | |
5dbd7676 NTND |
1260 | if (!delete_only(commands)) { |
1261 | unpack_status = unpack_with_sideband(&si); | |
1262 | update_shallow_info(commands, &si, &ref); | |
1263 | } | |
0a1bc12b | 1264 | execute_commands(commands, unpack_status, &si); |
576162a4 | 1265 | if (pack_lockfile) |
691f1a28 | 1266 | unlink_or_warn(pack_lockfile); |
cfee10a7 | 1267 | if (report_status) |
5e1c71fd | 1268 | report(commands, unpack_status); |
5a7da2dc | 1269 | run_receive_hook(commands, "post-receive", 1); |
8e663d9e | 1270 | run_update_post_hook(commands); |
77e3efbf JH |
1271 | if (auto_gc) { |
1272 | const char *argv_gc_auto[] = { | |
1273 | "gc", "--auto", "--quiet", NULL, | |
1274 | }; | |
4b7f2fa4 JH |
1275 | int opt = RUN_GIT_CMD | RUN_COMMAND_STDOUT_TO_STDERR; |
1276 | run_command_v_opt(argv_gc_auto, opt); | |
77e3efbf JH |
1277 | } |
1278 | if (auto_update_server_info) | |
1279 | update_server_info(0); | |
5dbd7676 | 1280 | clear_shallow_info(&si); |
7f8e9828 | 1281 | } |
38a81b4e SP |
1282 | if (use_sideband) |
1283 | packet_flush(1); | |
5dbd7676 NTND |
1284 | sha1_array_clear(&shallow); |
1285 | sha1_array_clear(&ref); | |
575f4974 LT |
1286 | return 0; |
1287 | } |