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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" |
d05b9618 JH |
18 | #include "tag.h" |
19 | #include "gpg-interface.h" | |
575f4974 | 20 | |
34263de0 | 21 | static const char receive_pack_usage[] = "git receive-pack <git-dir>"; |
575f4974 | 22 | |
986e8239 | 23 | enum deny_action { |
3d95d92b | 24 | DENY_UNCONFIGURED, |
986e8239 JK |
25 | DENY_IGNORE, |
26 | DENY_WARN, | |
4b05548f | 27 | DENY_REFUSE |
986e8239 JK |
28 | }; |
29 | ||
1b53a076 JH |
30 | static int deny_deletes; |
31 | static int deny_non_fast_forwards; | |
3d95d92b | 32 | static enum deny_action deny_current_branch = DENY_UNCONFIGURED; |
747ca245 | 33 | static enum deny_action deny_delete_current = DENY_UNCONFIGURED; |
dab76d3a JH |
34 | static int receive_fsck_objects = -1; |
35 | static int transfer_fsck_objects = -1; | |
e28714c5 JH |
36 | static int receive_unpack_limit = -1; |
37 | static int transfer_unpack_limit = -1; | |
46732fae | 38 | static int unpack_limit = 100; |
96f1e58f | 39 | static int report_status; |
38a81b4e | 40 | static int use_sideband; |
c207e34f | 41 | static int quiet; |
b74fce16 | 42 | static int prefer_ofs_delta = 1; |
77e3efbf JH |
43 | static int auto_update_server_info; |
44 | static int auto_gc = 1; | |
f7c815c3 | 45 | static int fix_thin = 1; |
747ca245 | 46 | static const char *head_name; |
96ec7b1e | 47 | static void *head_name_to_free; |
185c04e0 | 48 | static int sent_capabilities; |
0a1bc12b | 49 | static int shallow_update; |
5dbd7676 | 50 | static const char *alt_shallow_file; |
a85b377d JH |
51 | static int accept_push_cert = 1; |
52 | static struct strbuf push_cert = STRBUF_INIT; | |
53 | static unsigned char push_cert_sha1[20]; | |
d05b9618 | 54 | static struct signature_check sigcheck; |
cfee10a7 | 55 | |
986e8239 JK |
56 | static enum deny_action parse_deny_action(const char *var, const char *value) |
57 | { | |
58 | if (value) { | |
59 | if (!strcasecmp(value, "ignore")) | |
60 | return DENY_IGNORE; | |
61 | if (!strcasecmp(value, "warn")) | |
62 | return DENY_WARN; | |
63 | if (!strcasecmp(value, "refuse")) | |
64 | return DENY_REFUSE; | |
65 | } | |
66 | if (git_config_bool(var, value)) | |
67 | return DENY_REFUSE; | |
68 | return DENY_IGNORE; | |
69 | } | |
70 | ||
ef90d6d4 | 71 | static int receive_pack_config(const char *var, const char *value, void *cb) |
6fb75bed | 72 | { |
daebaa78 JH |
73 | int status = parse_hide_refs_config(var, value, "receive"); |
74 | ||
75 | if (status) | |
76 | return status; | |
77 | ||
a240de11 JK |
78 | if (strcmp(var, "receive.denydeletes") == 0) { |
79 | deny_deletes = git_config_bool(var, value); | |
80 | return 0; | |
81 | } | |
82 | ||
e28714c5 | 83 | if (strcmp(var, "receive.denynonfastforwards") == 0) { |
6fb75bed SP |
84 | deny_non_fast_forwards = git_config_bool(var, value); |
85 | return 0; | |
86 | } | |
87 | ||
e28714c5 JH |
88 | if (strcmp(var, "receive.unpacklimit") == 0) { |
89 | receive_unpack_limit = git_config_int(var, value); | |
fc04c412 SP |
90 | return 0; |
91 | } | |
92 | ||
e28714c5 JH |
93 | if (strcmp(var, "transfer.unpacklimit") == 0) { |
94 | transfer_unpack_limit = git_config_int(var, value); | |
95 | return 0; | |
96 | } | |
97 | ||
20dc0016 MK |
98 | if (strcmp(var, "receive.fsckobjects") == 0) { |
99 | receive_fsck_objects = git_config_bool(var, value); | |
100 | return 0; | |
101 | } | |
102 | ||
dab76d3a JH |
103 | if (strcmp(var, "transfer.fsckobjects") == 0) { |
104 | transfer_fsck_objects = git_config_bool(var, value); | |
105 | return 0; | |
106 | } | |
107 | ||
986e8239 JK |
108 | if (!strcmp(var, "receive.denycurrentbranch")) { |
109 | deny_current_branch = parse_deny_action(var, value); | |
110 | return 0; | |
111 | } | |
112 | ||
747ca245 JH |
113 | if (strcmp(var, "receive.denydeletecurrent") == 0) { |
114 | deny_delete_current = parse_deny_action(var, value); | |
115 | return 0; | |
116 | } | |
117 | ||
b74fce16 NP |
118 | if (strcmp(var, "repack.usedeltabaseoffset") == 0) { |
119 | prefer_ofs_delta = git_config_bool(var, value); | |
120 | return 0; | |
121 | } | |
122 | ||
77e3efbf JH |
123 | if (strcmp(var, "receive.updateserverinfo") == 0) { |
124 | auto_update_server_info = git_config_bool(var, value); | |
125 | return 0; | |
126 | } | |
127 | ||
128 | if (strcmp(var, "receive.autogc") == 0) { | |
129 | auto_gc = git_config_bool(var, value); | |
130 | return 0; | |
131 | } | |
132 | ||
0a1bc12b NTND |
133 | if (strcmp(var, "receive.shallowupdate") == 0) { |
134 | shallow_update = git_config_bool(var, value); | |
135 | return 0; | |
136 | } | |
137 | ||
a85b377d JH |
138 | if (strcmp(var, "receive.acceptpushcert") == 0) { |
139 | accept_push_cert = git_config_bool(var, value); | |
140 | return 0; | |
141 | } | |
142 | ||
ef90d6d4 | 143 | return git_default_config(var, value, cb); |
6fb75bed SP |
144 | } |
145 | ||
bc98201d | 146 | static void show_ref(const char *path, const unsigned char *sha1) |
575f4974 | 147 | { |
daebaa78 JH |
148 | if (ref_is_hidden(path)) |
149 | return; | |
150 | ||
52d2ae58 | 151 | if (sent_capabilities) { |
cfee10a7 | 152 | packet_write(1, "%s %s\n", sha1_to_hex(sha1), path); |
52d2ae58 JH |
153 | } else { |
154 | struct strbuf cap = STRBUF_INIT; | |
155 | ||
156 | strbuf_addstr(&cap, | |
157 | "report-status delete-refs side-band-64k quiet"); | |
158 | if (prefer_ofs_delta) | |
159 | strbuf_addstr(&cap, " ofs-delta"); | |
a85b377d JH |
160 | if (accept_push_cert) |
161 | strbuf_addstr(&cap, " push-cert"); | |
52d2ae58 JH |
162 | strbuf_addf(&cap, " agent=%s", git_user_agent_sanitized()); |
163 | packet_write(1, "%s %s%c%s\n", | |
164 | sha1_to_hex(sha1), path, 0, cap.buf); | |
165 | strbuf_release(&cap); | |
166 | sent_capabilities = 1; | |
167 | } | |
575f4974 LT |
168 | } |
169 | ||
bc98201d | 170 | static int show_ref_cb(const char *path, const unsigned char *sha1, int flag, void *unused) |
6b01ecfe JT |
171 | { |
172 | path = strip_namespace(path); | |
173 | /* | |
174 | * Advertise refs outside our current namespace as ".have" | |
175 | * refs, so that the client can use them to minimize data | |
176 | * transfer but will otherwise ignore them. This happens to | |
177 | * cover ".have" that are thrown in by add_one_alternate_ref() | |
178 | * to mark histories that are complete in our alternates as | |
179 | * well. | |
180 | */ | |
181 | if (!path) | |
182 | path = ".have"; | |
bc98201d MH |
183 | show_ref(path, sha1); |
184 | return 0; | |
6b01ecfe JT |
185 | } |
186 | ||
85f25104 | 187 | static void show_one_alternate_sha1(const unsigned char sha1[20], void *unused) |
b7a025d9 | 188 | { |
85f25104 | 189 | show_ref(".have", sha1); |
b7a025d9 MH |
190 | } |
191 | ||
192 | static void collect_one_alternate_ref(const struct ref *ref, void *data) | |
193 | { | |
194 | struct sha1_array *sa = data; | |
195 | sha1_array_append(sa, ref->old_sha1); | |
6b01ecfe JT |
196 | } |
197 | ||
8a65ff76 | 198 | static void write_head_info(void) |
575f4974 | 199 | { |
b7a025d9 MH |
200 | struct sha1_array sa = SHA1_ARRAY_INIT; |
201 | for_each_alternate_ref(collect_one_alternate_ref, &sa); | |
85f25104 | 202 | sha1_array_for_each_unique(&sa, show_one_alternate_sha1, NULL); |
b7a025d9 | 203 | sha1_array_clear(&sa); |
6b01ecfe | 204 | for_each_ref(show_ref_cb, NULL); |
185c04e0 | 205 | if (!sent_capabilities) |
bc98201d | 206 | show_ref("capabilities^{}", null_sha1); |
cfee10a7 | 207 | |
ad491366 NTND |
208 | advertise_shallow_grafts(1); |
209 | ||
b7a025d9 MH |
210 | /* EOF */ |
211 | packet_flush(1); | |
575f4974 LT |
212 | } |
213 | ||
eb1af2df LT |
214 | struct command { |
215 | struct command *next; | |
cfee10a7 | 216 | const char *error_string; |
160b81ed PYH |
217 | unsigned int skip_update:1, |
218 | did_not_exist:1; | |
5dbd7676 | 219 | int index; |
eb1af2df LT |
220 | unsigned char old_sha1[20]; |
221 | unsigned char new_sha1[20]; | |
8f1d2e6f | 222 | char ref_name[FLEX_ARRAY]; /* more */ |
575f4974 LT |
223 | }; |
224 | ||
466dbc42 SP |
225 | static void rp_error(const char *err, ...) __attribute__((format (printf, 1, 2))); |
226 | static void rp_warning(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
227 | ||
228 | static void report_message(const char *prefix, const char *err, va_list params) | |
229 | { | |
230 | int sz = strlen(prefix); | |
231 | char msg[4096]; | |
232 | ||
233 | strncpy(msg, prefix, sz); | |
234 | sz += vsnprintf(msg + sz, sizeof(msg) - sz, err, params); | |
235 | if (sz > (sizeof(msg) - 1)) | |
236 | sz = sizeof(msg) - 1; | |
237 | msg[sz++] = '\n'; | |
238 | ||
239 | if (use_sideband) | |
240 | send_sideband(1, 2, msg, sz, use_sideband); | |
241 | else | |
242 | xwrite(2, msg, sz); | |
243 | } | |
244 | ||
245 | static void rp_warning(const char *err, ...) | |
246 | { | |
247 | va_list params; | |
248 | va_start(params, err); | |
249 | report_message("warning: ", err, params); | |
250 | va_end(params); | |
251 | } | |
252 | ||
253 | static void rp_error(const char *err, ...) | |
254 | { | |
255 | va_list params; | |
256 | va_start(params, err); | |
257 | report_message("error: ", err, params); | |
258 | va_end(params); | |
259 | } | |
260 | ||
6d525d38 SP |
261 | static int copy_to_sideband(int in, int out, void *arg) |
262 | { | |
263 | char data[128]; | |
264 | while (1) { | |
265 | ssize_t sz = xread(in, data, sizeof(data)); | |
266 | if (sz <= 0) | |
267 | break; | |
268 | send_sideband(1, 2, data, sz, use_sideband); | |
269 | } | |
270 | close(in); | |
271 | return 0; | |
272 | } | |
273 | ||
a85b377d JH |
274 | static void prepare_push_cert_sha1(struct child_process *proc) |
275 | { | |
276 | static int already_done; | |
277 | struct argv_array env = ARGV_ARRAY_INIT; | |
278 | ||
279 | if (!push_cert.len) | |
280 | return; | |
281 | ||
282 | if (!already_done) { | |
d05b9618 JH |
283 | struct strbuf gpg_output = STRBUF_INIT; |
284 | struct strbuf gpg_status = STRBUF_INIT; | |
285 | int bogs /* beginning_of_gpg_sig */; | |
286 | ||
a85b377d JH |
287 | already_done = 1; |
288 | if (write_sha1_file(push_cert.buf, push_cert.len, "blob", push_cert_sha1)) | |
289 | hashclr(push_cert_sha1); | |
d05b9618 JH |
290 | |
291 | memset(&sigcheck, '\0', sizeof(sigcheck)); | |
292 | sigcheck.result = 'N'; | |
293 | ||
294 | bogs = parse_signature(push_cert.buf, push_cert.len); | |
295 | if (verify_signed_buffer(push_cert.buf, bogs, | |
296 | push_cert.buf + bogs, push_cert.len - bogs, | |
297 | &gpg_output, &gpg_status) < 0) { | |
298 | ; /* error running gpg */ | |
299 | } else { | |
300 | sigcheck.payload = push_cert.buf; | |
301 | sigcheck.gpg_output = gpg_output.buf; | |
302 | sigcheck.gpg_status = gpg_status.buf; | |
303 | parse_gpg_output(&sigcheck); | |
304 | } | |
305 | ||
306 | strbuf_release(&gpg_output); | |
307 | strbuf_release(&gpg_status); | |
a85b377d JH |
308 | } |
309 | if (!is_null_sha1(push_cert_sha1)) { | |
310 | argv_array_pushf(&env, "GIT_PUSH_CERT=%s", sha1_to_hex(push_cert_sha1)); | |
d05b9618 JH |
311 | argv_array_pushf(&env, "GIT_PUSH_CERT_SIGNER=%s", |
312 | sigcheck.signer ? sigcheck.signer : ""); | |
313 | argv_array_pushf(&env, "GIT_PUSH_CERT_KEY=%s", | |
314 | sigcheck.key ? sigcheck.key : ""); | |
315 | argv_array_pushf(&env, "GIT_PUSH_CERT_STATUS=%c", sigcheck.result); | |
316 | ||
a85b377d JH |
317 | proc->env = env.argv; |
318 | } | |
319 | } | |
320 | ||
9684e44a JH |
321 | typedef int (*feed_fn)(void *, const char **, size_t *); |
322 | static int run_and_feed_hook(const char *hook_name, feed_fn feed, void *feed_state) | |
b1bf95bb | 323 | { |
f43cd49f | 324 | struct child_process proc; |
6d525d38 | 325 | struct async muxer; |
f43cd49f | 326 | const char *argv[2]; |
9684e44a | 327 | int code; |
b1bf95bb | 328 | |
5a7da2dc AS |
329 | argv[0] = find_hook(hook_name); |
330 | if (!argv[0]) | |
b1bf95bb | 331 | return 0; |
c8dd2771 | 332 | |
f43cd49f SP |
333 | argv[1] = NULL; |
334 | ||
335 | memset(&proc, 0, sizeof(proc)); | |
336 | proc.argv = argv; | |
337 | proc.in = -1; | |
338 | proc.stdout_to_stderr = 1; | |
339 | ||
a85b377d JH |
340 | prepare_push_cert_sha1(&proc); |
341 | ||
6d525d38 SP |
342 | if (use_sideband) { |
343 | memset(&muxer, 0, sizeof(muxer)); | |
344 | muxer.proc = copy_to_sideband; | |
345 | muxer.in = -1; | |
346 | code = start_async(&muxer); | |
347 | if (code) | |
348 | return code; | |
349 | proc.err = muxer.in; | |
350 | } | |
351 | ||
f43cd49f | 352 | code = start_command(&proc); |
6d525d38 SP |
353 | if (code) { |
354 | if (use_sideband) | |
355 | finish_async(&muxer); | |
90e41a89 | 356 | return code; |
6d525d38 SP |
357 | } |
358 | ||
9684e44a JH |
359 | while (1) { |
360 | const char *buf; | |
361 | size_t n; | |
362 | if (feed(feed_state, &buf, &n)) | |
363 | break; | |
364 | if (write_in_full(proc.in, buf, n) != n) | |
365 | break; | |
c8dd2771 | 366 | } |
e72ae288 | 367 | close(proc.in); |
6d525d38 SP |
368 | if (use_sideband) |
369 | finish_async(&muxer); | |
90e41a89 | 370 | return finish_command(&proc); |
b1bf95bb JW |
371 | } |
372 | ||
9684e44a JH |
373 | struct receive_hook_feed_state { |
374 | struct command *cmd; | |
cdc2b2f3 | 375 | int skip_broken; |
9684e44a JH |
376 | struct strbuf buf; |
377 | }; | |
378 | ||
379 | static int feed_receive_hook(void *state_, const char **bufp, size_t *sizep) | |
380 | { | |
381 | struct receive_hook_feed_state *state = state_; | |
382 | struct command *cmd = state->cmd; | |
383 | ||
cdc2b2f3 JH |
384 | while (cmd && |
385 | state->skip_broken && (cmd->error_string || cmd->did_not_exist)) | |
9684e44a JH |
386 | cmd = cmd->next; |
387 | if (!cmd) | |
388 | return -1; /* EOF */ | |
389 | strbuf_reset(&state->buf); | |
390 | strbuf_addf(&state->buf, "%s %s %s\n", | |
391 | sha1_to_hex(cmd->old_sha1), sha1_to_hex(cmd->new_sha1), | |
392 | cmd->ref_name); | |
393 | state->cmd = cmd->next; | |
394 | if (bufp) { | |
395 | *bufp = state->buf.buf; | |
396 | *sizep = state->buf.len; | |
397 | } | |
398 | return 0; | |
399 | } | |
400 | ||
cdc2b2f3 JH |
401 | static int run_receive_hook(struct command *commands, const char *hook_name, |
402 | int skip_broken) | |
9684e44a JH |
403 | { |
404 | struct receive_hook_feed_state state; | |
405 | int status; | |
406 | ||
407 | strbuf_init(&state.buf, 0); | |
408 | state.cmd = commands; | |
cdc2b2f3 | 409 | state.skip_broken = skip_broken; |
9684e44a JH |
410 | if (feed_receive_hook(&state, NULL, NULL)) |
411 | return 0; | |
412 | state.cmd = commands; | |
413 | status = run_and_feed_hook(hook_name, feed_receive_hook, &state); | |
414 | strbuf_release(&state.buf); | |
415 | return status; | |
416 | } | |
417 | ||
1d9e8b56 SP |
418 | static int run_update_hook(struct command *cmd) |
419 | { | |
1d9e8b56 | 420 | const char *argv[5]; |
6d525d38 SP |
421 | struct child_process proc; |
422 | int code; | |
1d9e8b56 | 423 | |
5a7da2dc AS |
424 | argv[0] = find_hook("update"); |
425 | if (!argv[0]) | |
1d9e8b56 SP |
426 | return 0; |
427 | ||
1d9e8b56 SP |
428 | argv[1] = cmd->ref_name; |
429 | argv[2] = sha1_to_hex(cmd->old_sha1); | |
430 | argv[3] = sha1_to_hex(cmd->new_sha1); | |
431 | argv[4] = NULL; | |
432 | ||
6d525d38 SP |
433 | memset(&proc, 0, sizeof(proc)); |
434 | proc.no_stdin = 1; | |
435 | proc.stdout_to_stderr = 1; | |
436 | proc.err = use_sideband ? -1 : 0; | |
437 | proc.argv = argv; | |
438 | ||
439 | code = start_command(&proc); | |
440 | if (code) | |
441 | return code; | |
442 | if (use_sideband) | |
443 | copy_to_sideband(proc.err, -1, NULL); | |
444 | return finish_command(&proc); | |
1d9e8b56 SP |
445 | } |
446 | ||
986e8239 JK |
447 | static int is_ref_checked_out(const char *ref) |
448 | { | |
986e8239 JK |
449 | if (is_bare_repository()) |
450 | return 0; | |
451 | ||
747ca245 | 452 | if (!head_name) |
986e8239 | 453 | return 0; |
747ca245 | 454 | return !strcmp(head_name, ref); |
986e8239 JK |
455 | } |
456 | ||
acd2a45b JH |
457 | static char *refuse_unconfigured_deny_msg[] = { |
458 | "By default, updating the current branch in a non-bare repository", | |
459 | "is denied, because it will make the index and work tree inconsistent", | |
460 | "with what you pushed, and will require 'git reset --hard' to match", | |
461 | "the work tree to HEAD.", | |
3d95d92b JH |
462 | "", |
463 | "You can set 'receive.denyCurrentBranch' configuration variable to", | |
acd2a45b JH |
464 | "'ignore' or 'warn' in the remote repository to allow pushing into", |
465 | "its current branch; however, this is not recommended unless you", | |
466 | "arranged to update its work tree to match what you pushed in some", | |
467 | "other way.", | |
3d95d92b | 468 | "", |
acd2a45b JH |
469 | "To squelch this message and still keep the default behaviour, set", |
470 | "'receive.denyCurrentBranch' configuration variable to 'refuse'." | |
3d95d92b JH |
471 | }; |
472 | ||
acd2a45b | 473 | static void refuse_unconfigured_deny(void) |
3d95d92b JH |
474 | { |
475 | int i; | |
acd2a45b | 476 | for (i = 0; i < ARRAY_SIZE(refuse_unconfigured_deny_msg); i++) |
a886ba28 | 477 | rp_error("%s", refuse_unconfigured_deny_msg[i]); |
3d95d92b JH |
478 | } |
479 | ||
375881fa JH |
480 | static char *refuse_unconfigured_deny_delete_current_msg[] = { |
481 | "By default, deleting the current branch is denied, because the next", | |
482 | "'git clone' won't result in any file checked out, causing confusion.", | |
747ca245 JH |
483 | "", |
484 | "You can set 'receive.denyDeleteCurrent' configuration variable to", | |
375881fa JH |
485 | "'warn' or 'ignore' in the remote repository to allow deleting the", |
486 | "current branch, with or without a warning message.", | |
747ca245 | 487 | "", |
375881fa | 488 | "To squelch this message, you can set it to 'refuse'." |
747ca245 JH |
489 | }; |
490 | ||
375881fa | 491 | static void refuse_unconfigured_deny_delete_current(void) |
747ca245 JH |
492 | { |
493 | int i; | |
494 | for (i = 0; | |
375881fa | 495 | i < ARRAY_SIZE(refuse_unconfigured_deny_delete_current_msg); |
747ca245 | 496 | i++) |
a886ba28 | 497 | rp_error("%s", refuse_unconfigured_deny_delete_current_msg[i]); |
747ca245 JH |
498 | } |
499 | ||
0a1bc12b NTND |
500 | static int command_singleton_iterator(void *cb_data, unsigned char sha1[20]); |
501 | static int update_shallow_ref(struct command *cmd, struct shallow_info *si) | |
502 | { | |
503 | static struct lock_file shallow_lock; | |
504 | struct sha1_array extra = SHA1_ARRAY_INIT; | |
505 | const char *alt_file; | |
506 | uint32_t mask = 1 << (cmd->index % 32); | |
507 | int i; | |
508 | ||
6aa30857 | 509 | trace_printf_key(&trace_shallow, |
0a1bc12b NTND |
510 | "shallow: update_shallow_ref %s\n", cmd->ref_name); |
511 | for (i = 0; i < si->shallow->nr; i++) | |
512 | if (si->used_shallow[i] && | |
513 | (si->used_shallow[i][cmd->index / 32] & mask) && | |
514 | !delayed_reachability_test(si, i)) | |
515 | sha1_array_append(&extra, si->shallow->sha1[i]); | |
516 | ||
517 | setup_alternate_shallow(&shallow_lock, &alt_file, &extra); | |
518 | if (check_shallow_connected(command_singleton_iterator, | |
519 | 0, cmd, alt_file)) { | |
520 | rollback_lock_file(&shallow_lock); | |
521 | sha1_array_clear(&extra); | |
522 | return -1; | |
523 | } | |
524 | ||
525 | commit_lock_file(&shallow_lock); | |
526 | ||
527 | /* | |
528 | * Make sure setup_alternate_shallow() for the next ref does | |
529 | * not lose these new roots.. | |
530 | */ | |
531 | for (i = 0; i < extra.nr; i++) | |
532 | register_shallow(extra.sha1[i]); | |
533 | ||
534 | si->shallow_ref[cmd->index] = 0; | |
535 | sha1_array_clear(&extra); | |
536 | return 0; | |
537 | } | |
538 | ||
539 | static const char *update(struct command *cmd, struct shallow_info *si) | |
2eca23da | 540 | { |
cfee10a7 | 541 | const char *name = cmd->ref_name; |
6b01ecfe JT |
542 | struct strbuf namespaced_name_buf = STRBUF_INIT; |
543 | const char *namespaced_name; | |
cfee10a7 JH |
544 | unsigned char *old_sha1 = cmd->old_sha1; |
545 | unsigned char *new_sha1 = cmd->new_sha1; | |
3159c8dc | 546 | struct ref_lock *lock; |
2eca23da | 547 | |
061d6b9a | 548 | /* only refs/... are allowed */ |
59556548 | 549 | if (!starts_with(name, "refs/") || check_refname_format(name + 5, 0)) { |
466dbc42 | 550 | rp_error("refusing to create funny ref '%s' remotely", name); |
8aaf7d64 | 551 | return "funny refname"; |
cfee10a7 | 552 | } |
d8a1deec | 553 | |
6b01ecfe JT |
554 | strbuf_addf(&namespaced_name_buf, "%s%s", get_git_namespace(), name); |
555 | namespaced_name = strbuf_detach(&namespaced_name_buf, NULL); | |
556 | ||
557 | if (is_ref_checked_out(namespaced_name)) { | |
3d95d92b JH |
558 | switch (deny_current_branch) { |
559 | case DENY_IGNORE: | |
986e8239 | 560 | break; |
3d95d92b | 561 | case DENY_WARN: |
466dbc42 | 562 | rp_warning("updating the current branch"); |
986e8239 | 563 | break; |
3d95d92b | 564 | case DENY_REFUSE: |
acd2a45b | 565 | case DENY_UNCONFIGURED: |
466dbc42 | 566 | rp_error("refusing to update checked out branch: %s", name); |
acd2a45b JH |
567 | if (deny_current_branch == DENY_UNCONFIGURED) |
568 | refuse_unconfigured_deny(); | |
3d95d92b JH |
569 | return "branch is currently checked out"; |
570 | } | |
986e8239 JK |
571 | } |
572 | ||
d4f694ba | 573 | if (!is_null_sha1(new_sha1) && !has_sha1_file(new_sha1)) { |
8aaf7d64 SP |
574 | error("unpack should have generated %s, " |
575 | "but I can't find it!", sha1_to_hex(new_sha1)); | |
576 | return "bad pack"; | |
cfee10a7 | 577 | } |
747ca245 JH |
578 | |
579 | if (!is_null_sha1(old_sha1) && is_null_sha1(new_sha1)) { | |
59556548 | 580 | if (deny_deletes && starts_with(name, "refs/heads/")) { |
466dbc42 | 581 | rp_error("denying ref deletion for %s", name); |
747ca245 JH |
582 | return "deletion prohibited"; |
583 | } | |
584 | ||
6b01ecfe | 585 | if (!strcmp(namespaced_name, head_name)) { |
747ca245 JH |
586 | switch (deny_delete_current) { |
587 | case DENY_IGNORE: | |
588 | break; | |
589 | case DENY_WARN: | |
466dbc42 | 590 | rp_warning("deleting the current branch"); |
747ca245 JH |
591 | break; |
592 | case DENY_REFUSE: | |
375881fa JH |
593 | case DENY_UNCONFIGURED: |
594 | if (deny_delete_current == DENY_UNCONFIGURED) | |
595 | refuse_unconfigured_deny_delete_current(); | |
466dbc42 | 596 | rp_error("refusing to delete the current branch: %s", name); |
747ca245 JH |
597 | return "deletion of the current branch prohibited"; |
598 | } | |
599 | } | |
a240de11 | 600 | } |
747ca245 | 601 | |
d4f694ba | 602 | if (deny_non_fast_forwards && !is_null_sha1(new_sha1) && |
ba988a83 | 603 | !is_null_sha1(old_sha1) && |
59556548 | 604 | starts_with(name, "refs/heads/")) { |
eab82707 | 605 | struct object *old_object, *new_object; |
11031d7e | 606 | struct commit *old_commit, *new_commit; |
11031d7e | 607 | |
eab82707 MK |
608 | old_object = parse_object(old_sha1); |
609 | new_object = parse_object(new_sha1); | |
610 | ||
611 | if (!old_object || !new_object || | |
612 | old_object->type != OBJ_COMMIT || | |
613 | new_object->type != OBJ_COMMIT) { | |
614 | error("bad sha1 objects for %s", name); | |
615 | return "bad ref"; | |
616 | } | |
617 | old_commit = (struct commit *)old_object; | |
618 | new_commit = (struct commit *)new_object; | |
5d55915c | 619 | if (!in_merge_bases(old_commit, new_commit)) { |
466dbc42 SP |
620 | rp_error("denying non-fast-forward %s" |
621 | " (you should pull first)", name); | |
a75d7b54 | 622 | return "non-fast-forward"; |
8aaf7d64 | 623 | } |
11031d7e | 624 | } |
1d9e8b56 | 625 | if (run_update_hook(cmd)) { |
466dbc42 | 626 | rp_error("hook declined to update %s", name); |
8aaf7d64 | 627 | return "hook declined"; |
b1bf95bb | 628 | } |
3159c8dc | 629 | |
d4f694ba | 630 | if (is_null_sha1(new_sha1)) { |
28391a80 | 631 | if (!parse_object(old_sha1)) { |
28391a80 | 632 | old_sha1 = NULL; |
160b81ed PYH |
633 | if (ref_exists(name)) { |
634 | rp_warning("Allowing deletion of corrupt ref."); | |
635 | } else { | |
636 | rp_warning("Deleting a non-existent ref."); | |
637 | cmd->did_not_exist = 1; | |
638 | } | |
28391a80 | 639 | } |
6b01ecfe | 640 | if (delete_ref(namespaced_name, old_sha1, 0)) { |
466dbc42 | 641 | rp_error("failed to delete %s", name); |
8aaf7d64 | 642 | return "failed to delete"; |
d4f694ba | 643 | } |
8aaf7d64 | 644 | return NULL; /* good */ |
d4f694ba JH |
645 | } |
646 | else { | |
0a1bc12b NTND |
647 | if (shallow_update && si->shallow_ref[cmd->index] && |
648 | update_shallow_ref(cmd, si)) | |
649 | return "shallow error"; | |
650 | ||
9bbb0fa1 BK |
651 | lock = lock_any_ref_for_update(namespaced_name, old_sha1, |
652 | 0, NULL); | |
d4f694ba | 653 | if (!lock) { |
466dbc42 | 654 | rp_error("failed to lock %s", name); |
8aaf7d64 | 655 | return "failed to lock"; |
d4f694ba | 656 | } |
ef203f08 | 657 | if (write_ref_sha1(lock, new_sha1, "push")) { |
8aaf7d64 | 658 | return "failed to write"; /* error() already called */ |
ef203f08 | 659 | } |
8aaf7d64 | 660 | return NULL; /* good */ |
19614330 | 661 | } |
2eca23da LT |
662 | } |
663 | ||
5e1c71fd | 664 | static void run_update_post_hook(struct command *commands) |
19614330 | 665 | { |
5e1c71fd | 666 | struct command *cmd; |
6d525d38 | 667 | int argc; |
9201c707 | 668 | const char **argv; |
6d525d38 | 669 | struct child_process proc; |
5a7da2dc | 670 | char *hook; |
19614330 | 671 | |
5a7da2dc | 672 | hook = find_hook("post-update"); |
5e1c71fd | 673 | for (argc = 0, cmd = commands; cmd; cmd = cmd->next) { |
160b81ed | 674 | if (cmd->error_string || cmd->did_not_exist) |
19614330 JH |
675 | continue; |
676 | argc++; | |
677 | } | |
5a7da2dc | 678 | if (!argc || !hook) |
3e6e152c | 679 | return; |
5a7da2dc | 680 | |
3e6e152c | 681 | argv = xmalloc(sizeof(*argv) * (2 + argc)); |
5a7da2dc | 682 | argv[0] = hook; |
19614330 | 683 | |
5e1c71fd | 684 | for (argc = 1, cmd = commands; cmd; cmd = cmd->next) { |
160b81ed | 685 | if (cmd->error_string || cmd->did_not_exist) |
19614330 | 686 | continue; |
95244ae3 | 687 | argv[argc] = xstrdup(cmd->ref_name); |
19614330 JH |
688 | argc++; |
689 | } | |
690 | argv[argc] = NULL; | |
6d525d38 SP |
691 | |
692 | memset(&proc, 0, sizeof(proc)); | |
693 | proc.no_stdin = 1; | |
694 | proc.stdout_to_stderr = 1; | |
695 | proc.err = use_sideband ? -1 : 0; | |
696 | proc.argv = argv; | |
697 | ||
698 | if (!start_command(&proc)) { | |
699 | if (use_sideband) | |
700 | copy_to_sideband(proc.err, -1, NULL); | |
701 | finish_command(&proc); | |
702 | } | |
19614330 | 703 | } |
2eca23da | 704 | |
da3efdb1 JS |
705 | static void check_aliased_update(struct command *cmd, struct string_list *list) |
706 | { | |
6b01ecfe JT |
707 | struct strbuf buf = STRBUF_INIT; |
708 | const char *dst_name; | |
da3efdb1 JS |
709 | struct string_list_item *item; |
710 | struct command *dst_cmd; | |
711 | unsigned char sha1[20]; | |
712 | char cmd_oldh[41], cmd_newh[41], dst_oldh[41], dst_newh[41]; | |
713 | int flag; | |
714 | ||
6b01ecfe | 715 | strbuf_addf(&buf, "%s%s", get_git_namespace(), cmd->ref_name); |
8cad4744 | 716 | dst_name = resolve_ref_unsafe(buf.buf, sha1, 0, &flag); |
6b01ecfe | 717 | strbuf_release(&buf); |
da3efdb1 JS |
718 | |
719 | if (!(flag & REF_ISSYMREF)) | |
720 | return; | |
721 | ||
6b01ecfe JT |
722 | dst_name = strip_namespace(dst_name); |
723 | if (!dst_name) { | |
724 | rp_error("refusing update to broken symref '%s'", cmd->ref_name); | |
725 | cmd->skip_update = 1; | |
726 | cmd->error_string = "broken symref"; | |
727 | return; | |
728 | } | |
729 | ||
e8c8b713 | 730 | if ((item = string_list_lookup(list, dst_name)) == NULL) |
da3efdb1 JS |
731 | return; |
732 | ||
733 | cmd->skip_update = 1; | |
734 | ||
735 | dst_cmd = (struct command *) item->util; | |
736 | ||
737 | if (!hashcmp(cmd->old_sha1, dst_cmd->old_sha1) && | |
738 | !hashcmp(cmd->new_sha1, dst_cmd->new_sha1)) | |
739 | return; | |
740 | ||
741 | dst_cmd->skip_update = 1; | |
742 | ||
743 | strcpy(cmd_oldh, find_unique_abbrev(cmd->old_sha1, DEFAULT_ABBREV)); | |
0e71bc30 | 744 | strcpy(cmd_newh, find_unique_abbrev(cmd->new_sha1, DEFAULT_ABBREV)); |
da3efdb1 | 745 | strcpy(dst_oldh, find_unique_abbrev(dst_cmd->old_sha1, DEFAULT_ABBREV)); |
0e71bc30 | 746 | strcpy(dst_newh, find_unique_abbrev(dst_cmd->new_sha1, DEFAULT_ABBREV)); |
da3efdb1 JS |
747 | rp_error("refusing inconsistent update between symref '%s' (%s..%s) and" |
748 | " its target '%s' (%s..%s)", | |
749 | cmd->ref_name, cmd_oldh, cmd_newh, | |
750 | dst_cmd->ref_name, dst_oldh, dst_newh); | |
751 | ||
752 | cmd->error_string = dst_cmd->error_string = | |
753 | "inconsistent aliased update"; | |
754 | } | |
755 | ||
756 | static void check_aliased_updates(struct command *commands) | |
757 | { | |
758 | struct command *cmd; | |
183113a5 | 759 | struct string_list ref_list = STRING_LIST_INIT_NODUP; |
da3efdb1 JS |
760 | |
761 | for (cmd = commands; cmd; cmd = cmd->next) { | |
762 | struct string_list_item *item = | |
1d2f80fa | 763 | string_list_append(&ref_list, cmd->ref_name); |
da3efdb1 JS |
764 | item->util = (void *)cmd; |
765 | } | |
766 | sort_string_list(&ref_list); | |
767 | ||
ef7e93d9 CB |
768 | for (cmd = commands; cmd; cmd = cmd->next) { |
769 | if (!cmd->error_string) | |
770 | check_aliased_update(cmd, &ref_list); | |
771 | } | |
da3efdb1 JS |
772 | |
773 | string_list_clear(&ref_list, 0); | |
774 | } | |
775 | ||
52fed6e1 JH |
776 | static int command_singleton_iterator(void *cb_data, unsigned char sha1[20]) |
777 | { | |
778 | struct command **cmd_list = cb_data; | |
779 | struct command *cmd = *cmd_list; | |
780 | ||
ee6dfb2d | 781 | if (!cmd || is_null_sha1(cmd->new_sha1)) |
52fed6e1 JH |
782 | return -1; /* end of list */ |
783 | *cmd_list = NULL; /* this returns only one */ | |
784 | hashcpy(sha1, cmd->new_sha1); | |
785 | return 0; | |
786 | } | |
787 | ||
0a1bc12b NTND |
788 | static void set_connectivity_errors(struct command *commands, |
789 | struct shallow_info *si) | |
52fed6e1 JH |
790 | { |
791 | struct command *cmd; | |
792 | ||
793 | for (cmd = commands; cmd; cmd = cmd->next) { | |
794 | struct command *singleton = cmd; | |
0a1bc12b NTND |
795 | if (shallow_update && si->shallow_ref[cmd->index]) |
796 | /* to be checked in update_shallow_ref() */ | |
797 | continue; | |
52fed6e1 JH |
798 | if (!check_everything_connected(command_singleton_iterator, |
799 | 0, &singleton)) | |
800 | continue; | |
801 | cmd->error_string = "missing necessary objects"; | |
802 | } | |
803 | } | |
804 | ||
0a1bc12b NTND |
805 | struct iterate_data { |
806 | struct command *cmds; | |
807 | struct shallow_info *si; | |
808 | }; | |
809 | ||
52fed6e1 JH |
810 | static int iterate_receive_command_list(void *cb_data, unsigned char sha1[20]) |
811 | { | |
0a1bc12b NTND |
812 | struct iterate_data *data = cb_data; |
813 | struct command **cmd_list = &data->cmds; | |
52fed6e1 JH |
814 | struct command *cmd = *cmd_list; |
815 | ||
0a1bc12b NTND |
816 | for (; cmd; cmd = cmd->next) { |
817 | if (shallow_update && data->si->shallow_ref[cmd->index]) | |
818 | /* to be checked in update_shallow_ref() */ | |
819 | continue; | |
5dbd7676 | 820 | if (!is_null_sha1(cmd->new_sha1) && !cmd->skip_update) { |
ee6dfb2d JH |
821 | hashcpy(sha1, cmd->new_sha1); |
822 | *cmd_list = cmd->next; | |
823 | return 0; | |
824 | } | |
ee6dfb2d JH |
825 | } |
826 | *cmd_list = NULL; | |
827 | return -1; /* end of list */ | |
52fed6e1 JH |
828 | } |
829 | ||
daebaa78 JH |
830 | static void reject_updates_to_hidden(struct command *commands) |
831 | { | |
832 | struct command *cmd; | |
833 | ||
834 | for (cmd = commands; cmd; cmd = cmd->next) { | |
835 | if (cmd->error_string || !ref_is_hidden(cmd->ref_name)) | |
836 | continue; | |
837 | if (is_null_sha1(cmd->new_sha1)) | |
838 | cmd->error_string = "deny deleting a hidden ref"; | |
839 | else | |
840 | cmd->error_string = "deny updating a hidden ref"; | |
841 | } | |
842 | } | |
843 | ||
0a1bc12b NTND |
844 | static void execute_commands(struct command *commands, |
845 | const char *unpacker_error, | |
846 | struct shallow_info *si) | |
575f4974 | 847 | { |
0a1bc12b | 848 | int checked_connectivity; |
5e1c71fd | 849 | struct command *cmd; |
747ca245 | 850 | unsigned char sha1[20]; |
0a1bc12b | 851 | struct iterate_data data; |
8aaf7d64 SP |
852 | |
853 | if (unpacker_error) { | |
5e1c71fd | 854 | for (cmd = commands; cmd; cmd = cmd->next) |
74eb32d3 | 855 | cmd->error_string = "unpacker error"; |
8aaf7d64 SP |
856 | return; |
857 | } | |
858 | ||
0a1bc12b NTND |
859 | data.cmds = commands; |
860 | data.si = si; | |
861 | if (check_everything_connected(iterate_receive_command_list, 0, &data)) | |
862 | set_connectivity_errors(commands, si); | |
52fed6e1 | 863 | |
daebaa78 JH |
864 | reject_updates_to_hidden(commands); |
865 | ||
5a7da2dc | 866 | if (run_receive_hook(commands, "pre-receive", 0)) { |
ef7e93d9 CB |
867 | for (cmd = commands; cmd; cmd = cmd->next) { |
868 | if (!cmd->error_string) | |
869 | cmd->error_string = "pre-receive hook declined"; | |
870 | } | |
05ef58ec SP |
871 | return; |
872 | } | |
873 | ||
da3efdb1 JS |
874 | check_aliased_updates(commands); |
875 | ||
96ec7b1e NTND |
876 | free(head_name_to_free); |
877 | head_name = head_name_to_free = resolve_refdup("HEAD", sha1, 0, NULL); | |
747ca245 | 878 | |
0a1bc12b | 879 | checked_connectivity = 1; |
ef7e93d9 CB |
880 | for (cmd = commands; cmd; cmd = cmd->next) { |
881 | if (cmd->error_string) | |
882 | continue; | |
883 | ||
884 | if (cmd->skip_update) | |
885 | continue; | |
886 | ||
0a1bc12b NTND |
887 | cmd->error_string = update(cmd, si); |
888 | if (shallow_update && !cmd->error_string && | |
889 | si->shallow_ref[cmd->index]) { | |
890 | error("BUG: connectivity check has not been run on ref %s", | |
891 | cmd->ref_name); | |
892 | checked_connectivity = 0; | |
893 | } | |
894 | } | |
895 | ||
0179c945 JK |
896 | if (shallow_update && !checked_connectivity) |
897 | error("BUG: run 'git fsck' for safety.\n" | |
898 | "If there are errors, try to remove " | |
899 | "the reported refs above"); | |
575f4974 LT |
900 | } |
901 | ||
39895c74 JH |
902 | static struct command **queue_command(struct command **tail, |
903 | const char *line, | |
904 | int linelen) | |
905 | { | |
906 | unsigned char old_sha1[20], new_sha1[20]; | |
907 | struct command *cmd; | |
908 | const char *refname; | |
909 | int reflen; | |
910 | ||
911 | if (linelen < 83 || | |
912 | line[40] != ' ' || | |
913 | line[81] != ' ' || | |
914 | get_sha1_hex(line, old_sha1) || | |
915 | get_sha1_hex(line + 41, new_sha1)) | |
916 | die("protocol error: expected old/new/ref, got '%s'", line); | |
917 | ||
918 | refname = line + 82; | |
919 | reflen = linelen - 82; | |
920 | cmd = xcalloc(1, sizeof(struct command) + reflen + 1); | |
921 | hashcpy(cmd->old_sha1, old_sha1); | |
922 | hashcpy(cmd->new_sha1, new_sha1); | |
923 | memcpy(cmd->ref_name, refname, reflen); | |
924 | cmd->ref_name[reflen] = '\0'; | |
925 | *tail = cmd; | |
926 | return &cmd->next; | |
927 | } | |
928 | ||
4adf569d JH |
929 | static void queue_commands_from_cert(struct command **tail, |
930 | struct strbuf *push_cert) | |
931 | { | |
932 | const char *boc, *eoc; | |
933 | ||
934 | if (*tail) | |
935 | die("protocol error: got both push certificate and unsigned commands"); | |
936 | ||
937 | boc = strstr(push_cert->buf, "\n\n"); | |
938 | if (!boc) | |
939 | die("malformed push certificate %.*s", 100, push_cert->buf); | |
940 | else | |
941 | boc += 2; | |
942 | eoc = push_cert->buf + parse_signature(push_cert->buf, push_cert->len); | |
943 | ||
944 | while (boc < eoc) { | |
945 | const char *eol = memchr(boc, '\n', eoc - boc); | |
946 | tail = queue_command(tail, boc, eol ? eol - boc : eoc - eol); | |
947 | boc = eol ? eol + 1 : eoc; | |
948 | } | |
949 | } | |
950 | ||
5dbd7676 | 951 | static struct command *read_head_info(struct sha1_array *shallow) |
575f4974 | 952 | { |
5e1c71fd | 953 | struct command *commands = NULL; |
eb1af2df | 954 | struct command **p = &commands; |
575f4974 | 955 | for (;;) { |
74543a04 | 956 | char *line; |
39895c74 | 957 | int len, linelen; |
eb1af2df | 958 | |
74543a04 JK |
959 | line = packet_read_line(0, &len); |
960 | if (!line) | |
575f4974 | 961 | break; |
5dbd7676 | 962 | |
92251b1b | 963 | if (len == 48 && starts_with(line, "shallow ")) { |
c09b71cc JH |
964 | unsigned char sha1[20]; |
965 | if (get_sha1_hex(line + 8, sha1)) | |
966 | die("protocol error: expected shallow sha, got '%s'", | |
967 | line + 8); | |
968 | sha1_array_append(shallow, sha1); | |
5dbd7676 NTND |
969 | continue; |
970 | } | |
971 | ||
0e3c339b JH |
972 | linelen = strlen(line); |
973 | if (linelen < len) { | |
974 | const char *feature_list = line + linelen + 1; | |
975 | if (parse_feature_request(feature_list, "report-status")) | |
976 | report_status = 1; | |
977 | if (parse_feature_request(feature_list, "side-band-64k")) | |
978 | use_sideband = LARGE_PACKET_MAX; | |
979 | if (parse_feature_request(feature_list, "quiet")) | |
980 | quiet = 1; | |
981 | } | |
982 | ||
a85b377d JH |
983 | if (!strcmp(line, "push-cert")) { |
984 | int true_flush = 0; | |
985 | char certbuf[1024]; | |
986 | ||
987 | for (;;) { | |
988 | len = packet_read(0, NULL, NULL, | |
989 | certbuf, sizeof(certbuf), 0); | |
990 | if (!len) { | |
991 | true_flush = 1; | |
992 | break; | |
993 | } | |
994 | if (!strcmp(certbuf, "push-cert-end\n")) | |
995 | break; /* end of cert */ | |
996 | strbuf_addstr(&push_cert, certbuf); | |
997 | } | |
998 | ||
999 | if (true_flush) | |
1000 | break; | |
1001 | continue; | |
1002 | } | |
1003 | ||
39895c74 | 1004 | p = queue_command(p, line, linelen); |
575f4974 | 1005 | } |
4adf569d JH |
1006 | |
1007 | if (push_cert.len) | |
1008 | queue_commands_from_cert(p, &push_cert); | |
1009 | ||
5e1c71fd | 1010 | return commands; |
575f4974 LT |
1011 | } |
1012 | ||
fc04c412 SP |
1013 | static const char *parse_pack_header(struct pack_header *hdr) |
1014 | { | |
a69e5429 JH |
1015 | switch (read_pack_header(0, hdr)) { |
1016 | case PH_ERROR_EOF: | |
1017 | return "eof before pack header was fully read"; | |
1018 | ||
1019 | case PH_ERROR_PACK_SIGNATURE: | |
fc04c412 | 1020 | return "protocol error (pack signature mismatch detected)"; |
a69e5429 JH |
1021 | |
1022 | case PH_ERROR_PROTOCOL: | |
fc04c412 | 1023 | return "protocol error (pack version unsupported)"; |
a69e5429 JH |
1024 | |
1025 | default: | |
1026 | return "unknown error in parse_pack_header"; | |
1027 | ||
1028 | case 0: | |
1029 | return NULL; | |
1030 | } | |
fc04c412 SP |
1031 | } |
1032 | ||
576162a4 NP |
1033 | static const char *pack_lockfile; |
1034 | ||
5dbd7676 | 1035 | static const char *unpack(int err_fd, struct shallow_info *si) |
575f4974 | 1036 | { |
fc04c412 | 1037 | struct pack_header hdr; |
31c42bff | 1038 | struct argv_array av = ARGV_ARRAY_INIT; |
fc04c412 | 1039 | const char *hdr_err; |
31c42bff | 1040 | int status; |
fc04c412 | 1041 | char hdr_arg[38]; |
31c42bff | 1042 | struct child_process child; |
dab76d3a JH |
1043 | int fsck_objects = (receive_fsck_objects >= 0 |
1044 | ? receive_fsck_objects | |
1045 | : transfer_fsck_objects >= 0 | |
1046 | ? transfer_fsck_objects | |
1047 | : 0); | |
fc04c412 SP |
1048 | |
1049 | hdr_err = parse_pack_header(&hdr); | |
49ecfa13 JK |
1050 | if (hdr_err) { |
1051 | if (err_fd > 0) | |
1052 | close(err_fd); | |
fc04c412 | 1053 | return hdr_err; |
49ecfa13 | 1054 | } |
6e1c2344 RJ |
1055 | snprintf(hdr_arg, sizeof(hdr_arg), |
1056 | "--pack_header=%"PRIu32",%"PRIu32, | |
fc04c412 SP |
1057 | ntohl(hdr.hdr_version), ntohl(hdr.hdr_entries)); |
1058 | ||
5dbd7676 NTND |
1059 | if (si->nr_ours || si->nr_theirs) { |
1060 | alt_shallow_file = setup_temporary_shallow(si->shallow); | |
1061 | argv_array_pushl(&av, "--shallow-file", alt_shallow_file, NULL); | |
1062 | } | |
1063 | ||
31c42bff | 1064 | memset(&child, 0, sizeof(child)); |
fc04c412 | 1065 | if (ntohl(hdr.hdr_entries) < unpack_limit) { |
31c42bff | 1066 | argv_array_pushl(&av, "unpack-objects", hdr_arg, NULL); |
c207e34f | 1067 | if (quiet) |
31c42bff | 1068 | argv_array_push(&av, "-q"); |
dab76d3a | 1069 | if (fsck_objects) |
31c42bff NTND |
1070 | argv_array_push(&av, "--strict"); |
1071 | child.argv = av.argv; | |
59bfdfb8 | 1072 | child.no_stdout = 1; |
a22e6f85 | 1073 | child.err = err_fd; |
59bfdfb8 | 1074 | child.git_cmd = 1; |
31c42bff NTND |
1075 | status = run_command(&child); |
1076 | if (status) | |
1077 | return "unpack-objects abnormal exit"; | |
576162a4 | 1078 | } else { |
31c42bff | 1079 | int s; |
576162a4 | 1080 | char keep_arg[256]; |
576162a4 | 1081 | |
85e72830 | 1082 | s = sprintf(keep_arg, "--keep=receive-pack %"PRIuMAX" on ", (uintmax_t) getpid()); |
576162a4 NP |
1083 | if (gethostname(keep_arg + s, sizeof(keep_arg) - s)) |
1084 | strcpy(keep_arg + s, "localhost"); | |
1085 | ||
31c42bff NTND |
1086 | argv_array_pushl(&av, "index-pack", |
1087 | "--stdin", hdr_arg, keep_arg, NULL); | |
dab76d3a | 1088 | if (fsck_objects) |
31c42bff | 1089 | argv_array_push(&av, "--strict"); |
f7c815c3 | 1090 | if (fix_thin) |
31c42bff NTND |
1091 | argv_array_push(&av, "--fix-thin"); |
1092 | child.argv = av.argv; | |
1093 | child.out = -1; | |
1094 | child.err = err_fd; | |
1095 | child.git_cmd = 1; | |
1096 | status = start_command(&child); | |
1097 | if (status) | |
576162a4 | 1098 | return "index-pack fork failed"; |
31c42bff NTND |
1099 | pack_lockfile = index_pack_lockfile(child.out); |
1100 | close(child.out); | |
1101 | status = finish_command(&child); | |
1102 | if (status) | |
1103 | return "index-pack abnormal exit"; | |
1104 | reprepare_packed_git(); | |
cfee10a7 | 1105 | } |
31c42bff | 1106 | return NULL; |
cfee10a7 JH |
1107 | } |
1108 | ||
5dbd7676 | 1109 | static const char *unpack_with_sideband(struct shallow_info *si) |
a22e6f85 JK |
1110 | { |
1111 | struct async muxer; | |
1112 | const char *ret; | |
1113 | ||
1114 | if (!use_sideband) | |
5dbd7676 | 1115 | return unpack(0, si); |
a22e6f85 JK |
1116 | |
1117 | memset(&muxer, 0, sizeof(muxer)); | |
1118 | muxer.proc = copy_to_sideband; | |
1119 | muxer.in = -1; | |
1120 | if (start_async(&muxer)) | |
1121 | return NULL; | |
1122 | ||
5dbd7676 | 1123 | ret = unpack(muxer.in, si); |
a22e6f85 JK |
1124 | |
1125 | finish_async(&muxer); | |
1126 | return ret; | |
1127 | } | |
1128 | ||
0a1bc12b NTND |
1129 | static void prepare_shallow_update(struct command *commands, |
1130 | struct shallow_info *si) | |
1131 | { | |
1132 | int i, j, k, bitmap_size = (si->ref->nr + 31) / 32; | |
1133 | ||
1134 | si->used_shallow = xmalloc(sizeof(*si->used_shallow) * | |
1135 | si->shallow->nr); | |
1136 | assign_shallow_commits_to_refs(si, si->used_shallow, NULL); | |
1137 | ||
1138 | si->need_reachability_test = | |
1139 | xcalloc(si->shallow->nr, sizeof(*si->need_reachability_test)); | |
1140 | si->reachable = | |
1141 | xcalloc(si->shallow->nr, sizeof(*si->reachable)); | |
1142 | si->shallow_ref = xcalloc(si->ref->nr, sizeof(*si->shallow_ref)); | |
1143 | ||
1144 | for (i = 0; i < si->nr_ours; i++) | |
1145 | si->need_reachability_test[si->ours[i]] = 1; | |
1146 | ||
1147 | for (i = 0; i < si->shallow->nr; i++) { | |
1148 | if (!si->used_shallow[i]) | |
1149 | continue; | |
1150 | for (j = 0; j < bitmap_size; j++) { | |
1151 | if (!si->used_shallow[i][j]) | |
1152 | continue; | |
1153 | si->need_reachability_test[i]++; | |
1154 | for (k = 0; k < 32; k++) | |
1155 | if (si->used_shallow[i][j] & (1 << k)) | |
1156 | si->shallow_ref[j * 32 + k]++; | |
1157 | } | |
1158 | ||
1159 | /* | |
1160 | * true for those associated with some refs and belong | |
1161 | * in "ours" list aka "step 7 not done yet" | |
1162 | */ | |
1163 | si->need_reachability_test[i] = | |
1164 | si->need_reachability_test[i] > 1; | |
1165 | } | |
1166 | ||
1167 | /* | |
1168 | * keep hooks happy by forcing a temporary shallow file via | |
1169 | * env variable because we can't add --shallow-file to every | |
1170 | * command. check_everything_connected() will be done with | |
1171 | * true .git/shallow though. | |
1172 | */ | |
1173 | setenv(GIT_SHALLOW_FILE_ENVIRONMENT, alt_shallow_file, 1); | |
1174 | } | |
1175 | ||
5dbd7676 NTND |
1176 | static void update_shallow_info(struct command *commands, |
1177 | struct shallow_info *si, | |
1178 | struct sha1_array *ref) | |
1179 | { | |
1180 | struct command *cmd; | |
1181 | int *ref_status; | |
1182 | remove_nonexistent_theirs_shallow(si); | |
0a1bc12b NTND |
1183 | if (!si->nr_ours && !si->nr_theirs) { |
1184 | shallow_update = 0; | |
5dbd7676 | 1185 | return; |
0a1bc12b | 1186 | } |
5dbd7676 NTND |
1187 | |
1188 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1189 | if (is_null_sha1(cmd->new_sha1)) | |
1190 | continue; | |
1191 | sha1_array_append(ref, cmd->new_sha1); | |
1192 | cmd->index = ref->nr - 1; | |
1193 | } | |
1194 | si->ref = ref; | |
1195 | ||
0a1bc12b NTND |
1196 | if (shallow_update) { |
1197 | prepare_shallow_update(commands, si); | |
1198 | return; | |
1199 | } | |
1200 | ||
5dbd7676 NTND |
1201 | ref_status = xmalloc(sizeof(*ref_status) * ref->nr); |
1202 | assign_shallow_commits_to_refs(si, NULL, ref_status); | |
1203 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1204 | if (is_null_sha1(cmd->new_sha1)) | |
1205 | continue; | |
1206 | if (ref_status[cmd->index]) { | |
1207 | cmd->error_string = "shallow update not allowed"; | |
1208 | cmd->skip_update = 1; | |
1209 | } | |
1210 | } | |
5dbd7676 NTND |
1211 | free(ref_status); |
1212 | } | |
1213 | ||
5e1c71fd | 1214 | static void report(struct command *commands, const char *unpack_status) |
cfee10a7 JH |
1215 | { |
1216 | struct command *cmd; | |
38a81b4e SP |
1217 | struct strbuf buf = STRBUF_INIT; |
1218 | ||
1219 | packet_buf_write(&buf, "unpack %s\n", | |
1220 | unpack_status ? unpack_status : "ok"); | |
cfee10a7 JH |
1221 | for (cmd = commands; cmd; cmd = cmd->next) { |
1222 | if (!cmd->error_string) | |
38a81b4e SP |
1223 | packet_buf_write(&buf, "ok %s\n", |
1224 | cmd->ref_name); | |
cfee10a7 | 1225 | else |
38a81b4e SP |
1226 | packet_buf_write(&buf, "ng %s %s\n", |
1227 | cmd->ref_name, cmd->error_string); | |
575f4974 | 1228 | } |
38a81b4e SP |
1229 | packet_buf_flush(&buf); |
1230 | ||
1231 | if (use_sideband) | |
1232 | send_sideband(1, 1, buf.buf, buf.len, use_sideband); | |
1233 | else | |
cdf4fb8e | 1234 | write_or_die(1, buf.buf, buf.len); |
38a81b4e | 1235 | strbuf_release(&buf); |
575f4974 LT |
1236 | } |
1237 | ||
5e1c71fd | 1238 | static int delete_only(struct command *commands) |
d4f694ba | 1239 | { |
5e1c71fd JS |
1240 | struct command *cmd; |
1241 | for (cmd = commands; cmd; cmd = cmd->next) { | |
d4f694ba JH |
1242 | if (!is_null_sha1(cmd->new_sha1)) |
1243 | return 0; | |
d4f694ba JH |
1244 | } |
1245 | return 1; | |
1246 | } | |
1247 | ||
be5908ae | 1248 | int cmd_receive_pack(int argc, const char **argv, const char *prefix) |
575f4974 | 1249 | { |
42526b47 SP |
1250 | int advertise_refs = 0; |
1251 | int stateless_rpc = 0; | |
d0efc8a7 | 1252 | int i; |
d51428bf | 1253 | const char *dir = NULL; |
5e1c71fd | 1254 | struct command *commands; |
5dbd7676 NTND |
1255 | struct sha1_array shallow = SHA1_ARRAY_INIT; |
1256 | struct sha1_array ref = SHA1_ARRAY_INIT; | |
1257 | struct shallow_info si; | |
575f4974 | 1258 | |
bbc30f99 JK |
1259 | packet_trace_identity("receive-pack"); |
1260 | ||
575f4974 LT |
1261 | argv++; |
1262 | for (i = 1; i < argc; i++) { | |
be5908ae | 1263 | const char *arg = *argv++; |
575f4974 LT |
1264 | |
1265 | if (*arg == '-') { | |
c207e34f CB |
1266 | if (!strcmp(arg, "--quiet")) { |
1267 | quiet = 1; | |
1268 | continue; | |
1269 | } | |
1270 | ||
42526b47 SP |
1271 | if (!strcmp(arg, "--advertise-refs")) { |
1272 | advertise_refs = 1; | |
1273 | continue; | |
1274 | } | |
1275 | if (!strcmp(arg, "--stateless-rpc")) { | |
1276 | stateless_rpc = 1; | |
1277 | continue; | |
1278 | } | |
f7c815c3 NTND |
1279 | if (!strcmp(arg, "--reject-thin-pack-for-testing")) { |
1280 | fix_thin = 0; | |
1281 | continue; | |
1282 | } | |
42526b47 | 1283 | |
575f4974 LT |
1284 | usage(receive_pack_usage); |
1285 | } | |
d0efc8a7 LT |
1286 | if (dir) |
1287 | usage(receive_pack_usage); | |
d51428bf | 1288 | dir = arg; |
575f4974 LT |
1289 | } |
1290 | if (!dir) | |
1291 | usage(receive_pack_usage); | |
1292 | ||
e1464ca7 | 1293 | setup_path(); |
5c09f321 | 1294 | |
3159c8dc | 1295 | if (!enter_repo(dir, 0)) |
05ac6b34 | 1296 | die("'%s' does not appear to be a git repository", dir); |
575f4974 | 1297 | |
ef90d6d4 | 1298 | git_config(receive_pack_config, NULL); |
6fb75bed | 1299 | |
e28714c5 JH |
1300 | if (0 <= transfer_unpack_limit) |
1301 | unpack_limit = transfer_unpack_limit; | |
1302 | else if (0 <= receive_unpack_limit) | |
1303 | unpack_limit = receive_unpack_limit; | |
1304 | ||
42526b47 | 1305 | if (advertise_refs || !stateless_rpc) { |
42526b47 | 1306 | write_head_info(); |
42526b47 SP |
1307 | } |
1308 | if (advertise_refs) | |
1309 | return 0; | |
575f4974 | 1310 | |
5dbd7676 | 1311 | if ((commands = read_head_info(&shallow)) != NULL) { |
d4f694ba JH |
1312 | const char *unpack_status = NULL; |
1313 | ||
5dbd7676 | 1314 | prepare_shallow_info(&si, &shallow); |
0a1bc12b NTND |
1315 | if (!si.nr_ours && !si.nr_theirs) |
1316 | shallow_update = 0; | |
5dbd7676 NTND |
1317 | if (!delete_only(commands)) { |
1318 | unpack_status = unpack_with_sideband(&si); | |
1319 | update_shallow_info(commands, &si, &ref); | |
1320 | } | |
0a1bc12b | 1321 | execute_commands(commands, unpack_status, &si); |
576162a4 | 1322 | if (pack_lockfile) |
691f1a28 | 1323 | unlink_or_warn(pack_lockfile); |
cfee10a7 | 1324 | if (report_status) |
5e1c71fd | 1325 | report(commands, unpack_status); |
5a7da2dc | 1326 | run_receive_hook(commands, "post-receive", 1); |
8e663d9e | 1327 | run_update_post_hook(commands); |
77e3efbf JH |
1328 | if (auto_gc) { |
1329 | const char *argv_gc_auto[] = { | |
1330 | "gc", "--auto", "--quiet", NULL, | |
1331 | }; | |
4b7f2fa4 JH |
1332 | int opt = RUN_GIT_CMD | RUN_COMMAND_STDOUT_TO_STDERR; |
1333 | run_command_v_opt(argv_gc_auto, opt); | |
77e3efbf JH |
1334 | } |
1335 | if (auto_update_server_info) | |
1336 | update_server_info(0); | |
5dbd7676 | 1337 | clear_shallow_info(&si); |
7f8e9828 | 1338 | } |
38a81b4e SP |
1339 | if (use_sideband) |
1340 | packet_flush(1); | |
5dbd7676 NTND |
1341 | sha1_array_clear(&shallow); |
1342 | sha1_array_clear(&ref); | |
575f4974 LT |
1343 | return 0; |
1344 | } |