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Commit | Line | Data |
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1e4cd68c | 1 | #include "builtin.h" |
697cc8ef | 2 | #include "lockfile.h" |
fc04c412 | 3 | #include "pack.h" |
8a65ff76 | 4 | #include "refs.h" |
f3a3214e | 5 | #include "pkt-line.h" |
38a81b4e | 6 | #include "sideband.h" |
b1bf95bb | 7 | #include "run-command.h" |
576162a4 | 8 | #include "exec_cmd.h" |
11031d7e JS |
9 | #include "commit.h" |
10 | #include "object.h" | |
d79796bc | 11 | #include "remote.h" |
47a59185 | 12 | #include "connect.h" |
d79796bc | 13 | #include "transport.h" |
da3efdb1 | 14 | #include "string-list.h" |
cff38a5e | 15 | #include "sha1-array.h" |
52fed6e1 | 16 | #include "connected.h" |
31c42bff | 17 | #include "argv-array.h" |
ff5effdf | 18 | #include "version.h" |
d05b9618 JH |
19 | #include "tag.h" |
20 | #include "gpg-interface.h" | |
ec7dbd14 | 21 | #include "sigchain.h" |
5d477a33 | 22 | #include "fsck.h" |
575f4974 | 23 | |
1b68387e SS |
24 | static const char * const receive_pack_usage[] = { |
25 | N_("git receive-pack <git-dir>"), | |
26 | NULL | |
27 | }; | |
575f4974 | 28 | |
986e8239 | 29 | enum deny_action { |
3d95d92b | 30 | DENY_UNCONFIGURED, |
986e8239 JK |
31 | DENY_IGNORE, |
32 | DENY_WARN, | |
1404bcbb JS |
33 | DENY_REFUSE, |
34 | DENY_UPDATE_INSTEAD | |
986e8239 JK |
35 | }; |
36 | ||
1b53a076 JH |
37 | static int deny_deletes; |
38 | static int deny_non_fast_forwards; | |
3d95d92b | 39 | static enum deny_action deny_current_branch = DENY_UNCONFIGURED; |
747ca245 | 40 | static enum deny_action deny_delete_current = DENY_UNCONFIGURED; |
dab76d3a JH |
41 | static int receive_fsck_objects = -1; |
42 | static int transfer_fsck_objects = -1; | |
5d477a33 | 43 | static struct strbuf fsck_msg_types = STRBUF_INIT; |
e28714c5 JH |
44 | static int receive_unpack_limit = -1; |
45 | static int transfer_unpack_limit = -1; | |
1b70fe5d | 46 | static int advertise_atomic_push = 1; |
46732fae | 47 | static int unpack_limit = 100; |
96f1e58f | 48 | static int report_status; |
38a81b4e | 49 | static int use_sideband; |
68deed29 | 50 | static int use_atomic; |
c207e34f | 51 | static int quiet; |
b74fce16 | 52 | static int prefer_ofs_delta = 1; |
77e3efbf JH |
53 | static int auto_update_server_info; |
54 | static int auto_gc = 1; | |
1b68387e | 55 | static int reject_thin; |
5732373d JH |
56 | static int stateless_rpc; |
57 | static const char *service_dir; | |
747ca245 | 58 | static const char *head_name; |
96ec7b1e | 59 | static void *head_name_to_free; |
185c04e0 | 60 | static int sent_capabilities; |
0a1bc12b | 61 | static int shallow_update; |
5dbd7676 | 62 | static const char *alt_shallow_file; |
a85b377d JH |
63 | static struct strbuf push_cert = STRBUF_INIT; |
64 | static unsigned char push_cert_sha1[20]; | |
d05b9618 | 65 | static struct signature_check sigcheck; |
b89363e4 JH |
66 | static const char *push_cert_nonce; |
67 | static const char *cert_nonce_seed; | |
68 | ||
69 | static const char *NONCE_UNSOLICITED = "UNSOLICITED"; | |
70 | static const char *NONCE_BAD = "BAD"; | |
71 | static const char *NONCE_MISSING = "MISSING"; | |
72 | static const char *NONCE_OK = "OK"; | |
5732373d | 73 | static const char *NONCE_SLOP = "SLOP"; |
b89363e4 | 74 | static const char *nonce_status; |
5732373d JH |
75 | static long nonce_stamp_slop; |
76 | static unsigned long nonce_stamp_slop_limit; | |
222368c6 | 77 | static struct ref_transaction *transaction; |
cfee10a7 | 78 | |
986e8239 JK |
79 | static enum deny_action parse_deny_action(const char *var, const char *value) |
80 | { | |
81 | if (value) { | |
82 | if (!strcasecmp(value, "ignore")) | |
83 | return DENY_IGNORE; | |
84 | if (!strcasecmp(value, "warn")) | |
85 | return DENY_WARN; | |
86 | if (!strcasecmp(value, "refuse")) | |
87 | return DENY_REFUSE; | |
1404bcbb JS |
88 | if (!strcasecmp(value, "updateinstead")) |
89 | return DENY_UPDATE_INSTEAD; | |
986e8239 JK |
90 | } |
91 | if (git_config_bool(var, value)) | |
92 | return DENY_REFUSE; | |
93 | return DENY_IGNORE; | |
94 | } | |
95 | ||
ef90d6d4 | 96 | static int receive_pack_config(const char *var, const char *value, void *cb) |
6fb75bed | 97 | { |
daebaa78 JH |
98 | int status = parse_hide_refs_config(var, value, "receive"); |
99 | ||
100 | if (status) | |
101 | return status; | |
102 | ||
a240de11 JK |
103 | if (strcmp(var, "receive.denydeletes") == 0) { |
104 | deny_deletes = git_config_bool(var, value); | |
105 | return 0; | |
106 | } | |
107 | ||
e28714c5 | 108 | if (strcmp(var, "receive.denynonfastforwards") == 0) { |
6fb75bed SP |
109 | deny_non_fast_forwards = git_config_bool(var, value); |
110 | return 0; | |
111 | } | |
112 | ||
e28714c5 JH |
113 | if (strcmp(var, "receive.unpacklimit") == 0) { |
114 | receive_unpack_limit = git_config_int(var, value); | |
fc04c412 SP |
115 | return 0; |
116 | } | |
117 | ||
e28714c5 JH |
118 | if (strcmp(var, "transfer.unpacklimit") == 0) { |
119 | transfer_unpack_limit = git_config_int(var, value); | |
120 | return 0; | |
121 | } | |
122 | ||
cd94c6f9 JS |
123 | if (strcmp(var, "receive.fsck.skiplist") == 0) { |
124 | const char *path; | |
125 | ||
126 | if (git_config_pathname(&path, var, value)) | |
127 | return 1; | |
128 | strbuf_addf(&fsck_msg_types, "%cskiplist=%s", | |
129 | fsck_msg_types.len ? ',' : '=', path); | |
130 | free((char *)path); | |
131 | return 0; | |
132 | } | |
133 | ||
5d477a33 JS |
134 | if (skip_prefix(var, "receive.fsck.", &var)) { |
135 | if (is_valid_msg_type(var, value)) | |
136 | strbuf_addf(&fsck_msg_types, "%c%s=%s", | |
137 | fsck_msg_types.len ? ',' : '=', var, value); | |
138 | else | |
139 | warning("Skipping unknown msg id '%s'", var); | |
140 | return 0; | |
141 | } | |
142 | ||
20dc0016 MK |
143 | if (strcmp(var, "receive.fsckobjects") == 0) { |
144 | receive_fsck_objects = git_config_bool(var, value); | |
145 | return 0; | |
146 | } | |
147 | ||
dab76d3a JH |
148 | if (strcmp(var, "transfer.fsckobjects") == 0) { |
149 | transfer_fsck_objects = git_config_bool(var, value); | |
150 | return 0; | |
151 | } | |
152 | ||
986e8239 JK |
153 | if (!strcmp(var, "receive.denycurrentbranch")) { |
154 | deny_current_branch = parse_deny_action(var, value); | |
155 | return 0; | |
156 | } | |
157 | ||
747ca245 JH |
158 | if (strcmp(var, "receive.denydeletecurrent") == 0) { |
159 | deny_delete_current = parse_deny_action(var, value); | |
160 | return 0; | |
161 | } | |
162 | ||
b74fce16 NP |
163 | if (strcmp(var, "repack.usedeltabaseoffset") == 0) { |
164 | prefer_ofs_delta = git_config_bool(var, value); | |
165 | return 0; | |
166 | } | |
167 | ||
77e3efbf JH |
168 | if (strcmp(var, "receive.updateserverinfo") == 0) { |
169 | auto_update_server_info = git_config_bool(var, value); | |
170 | return 0; | |
171 | } | |
172 | ||
173 | if (strcmp(var, "receive.autogc") == 0) { | |
174 | auto_gc = git_config_bool(var, value); | |
175 | return 0; | |
176 | } | |
177 | ||
0a1bc12b NTND |
178 | if (strcmp(var, "receive.shallowupdate") == 0) { |
179 | shallow_update = git_config_bool(var, value); | |
180 | return 0; | |
181 | } | |
182 | ||
b89363e4 JH |
183 | if (strcmp(var, "receive.certnonceseed") == 0) |
184 | return git_config_string(&cert_nonce_seed, var, value); | |
a85b377d | 185 | |
5732373d JH |
186 | if (strcmp(var, "receive.certnonceslop") == 0) { |
187 | nonce_stamp_slop_limit = git_config_ulong(var, value); | |
188 | return 0; | |
189 | } | |
190 | ||
1b70fe5d RS |
191 | if (strcmp(var, "receive.advertiseatomic") == 0) { |
192 | advertise_atomic_push = git_config_bool(var, value); | |
193 | return 0; | |
194 | } | |
195 | ||
ef90d6d4 | 196 | return git_default_config(var, value, cb); |
6fb75bed SP |
197 | } |
198 | ||
bc98201d | 199 | static void show_ref(const char *path, const unsigned char *sha1) |
575f4974 | 200 | { |
52d2ae58 | 201 | if (sent_capabilities) { |
cfee10a7 | 202 | packet_write(1, "%s %s\n", sha1_to_hex(sha1), path); |
52d2ae58 JH |
203 | } else { |
204 | struct strbuf cap = STRBUF_INIT; | |
205 | ||
206 | strbuf_addstr(&cap, | |
207 | "report-status delete-refs side-band-64k quiet"); | |
1b70fe5d RS |
208 | if (advertise_atomic_push) |
209 | strbuf_addstr(&cap, " atomic"); | |
52d2ae58 JH |
210 | if (prefer_ofs_delta) |
211 | strbuf_addstr(&cap, " ofs-delta"); | |
b89363e4 JH |
212 | if (push_cert_nonce) |
213 | strbuf_addf(&cap, " push-cert=%s", push_cert_nonce); | |
52d2ae58 JH |
214 | strbuf_addf(&cap, " agent=%s", git_user_agent_sanitized()); |
215 | packet_write(1, "%s %s%c%s\n", | |
216 | sha1_to_hex(sha1), path, 0, cap.buf); | |
217 | strbuf_release(&cap); | |
218 | sent_capabilities = 1; | |
219 | } | |
575f4974 LT |
220 | } |
221 | ||
78a766ab LF |
222 | static int show_ref_cb(const char *path_full, const struct object_id *oid, |
223 | int flag, void *unused) | |
6b01ecfe | 224 | { |
78a766ab LF |
225 | const char *path = strip_namespace(path_full); |
226 | ||
227 | if (ref_is_hidden(path, path_full)) | |
228 | return 0; | |
229 | ||
6b01ecfe JT |
230 | /* |
231 | * Advertise refs outside our current namespace as ".have" | |
232 | * refs, so that the client can use them to minimize data | |
233 | * transfer but will otherwise ignore them. This happens to | |
234 | * cover ".have" that are thrown in by add_one_alternate_ref() | |
235 | * to mark histories that are complete in our alternates as | |
236 | * well. | |
237 | */ | |
238 | if (!path) | |
239 | path = ".have"; | |
ce2a9873 | 240 | show_ref(path, oid->hash); |
bc98201d | 241 | return 0; |
6b01ecfe JT |
242 | } |
243 | ||
85f25104 | 244 | static void show_one_alternate_sha1(const unsigned char sha1[20], void *unused) |
b7a025d9 | 245 | { |
85f25104 | 246 | show_ref(".have", sha1); |
b7a025d9 MH |
247 | } |
248 | ||
249 | static void collect_one_alternate_ref(const struct ref *ref, void *data) | |
250 | { | |
251 | struct sha1_array *sa = data; | |
f4e54d02 | 252 | sha1_array_append(sa, ref->old_oid.hash); |
6b01ecfe JT |
253 | } |
254 | ||
8a65ff76 | 255 | static void write_head_info(void) |
575f4974 | 256 | { |
b7a025d9 | 257 | struct sha1_array sa = SHA1_ARRAY_INIT; |
2b2a5be3 | 258 | |
b7a025d9 | 259 | for_each_alternate_ref(collect_one_alternate_ref, &sa); |
85f25104 | 260 | sha1_array_for_each_unique(&sa, show_one_alternate_sha1, NULL); |
b7a025d9 | 261 | sha1_array_clear(&sa); |
ce2a9873 | 262 | for_each_ref(show_ref_cb, NULL); |
185c04e0 | 263 | if (!sent_capabilities) |
bc98201d | 264 | show_ref("capabilities^{}", null_sha1); |
cfee10a7 | 265 | |
ad491366 NTND |
266 | advertise_shallow_grafts(1); |
267 | ||
b7a025d9 MH |
268 | /* EOF */ |
269 | packet_flush(1); | |
575f4974 LT |
270 | } |
271 | ||
eb1af2df LT |
272 | struct command { |
273 | struct command *next; | |
cfee10a7 | 274 | const char *error_string; |
160b81ed PYH |
275 | unsigned int skip_update:1, |
276 | did_not_exist:1; | |
5dbd7676 | 277 | int index; |
eb1af2df LT |
278 | unsigned char old_sha1[20]; |
279 | unsigned char new_sha1[20]; | |
8f1d2e6f | 280 | char ref_name[FLEX_ARRAY]; /* more */ |
575f4974 LT |
281 | }; |
282 | ||
466dbc42 SP |
283 | static void rp_error(const char *err, ...) __attribute__((format (printf, 1, 2))); |
284 | static void rp_warning(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
285 | ||
286 | static void report_message(const char *prefix, const char *err, va_list params) | |
287 | { | |
b7115a35 | 288 | int sz; |
466dbc42 SP |
289 | char msg[4096]; |
290 | ||
b7115a35 | 291 | sz = xsnprintf(msg, sizeof(msg), "%s", prefix); |
466dbc42 SP |
292 | sz += vsnprintf(msg + sz, sizeof(msg) - sz, err, params); |
293 | if (sz > (sizeof(msg) - 1)) | |
294 | sz = sizeof(msg) - 1; | |
295 | msg[sz++] = '\n'; | |
296 | ||
297 | if (use_sideband) | |
298 | send_sideband(1, 2, msg, sz, use_sideband); | |
299 | else | |
300 | xwrite(2, msg, sz); | |
301 | } | |
302 | ||
303 | static void rp_warning(const char *err, ...) | |
304 | { | |
305 | va_list params; | |
306 | va_start(params, err); | |
307 | report_message("warning: ", err, params); | |
308 | va_end(params); | |
309 | } | |
310 | ||
311 | static void rp_error(const char *err, ...) | |
312 | { | |
313 | va_list params; | |
314 | va_start(params, err); | |
315 | report_message("error: ", err, params); | |
316 | va_end(params); | |
317 | } | |
318 | ||
6d525d38 SP |
319 | static int copy_to_sideband(int in, int out, void *arg) |
320 | { | |
321 | char data[128]; | |
322 | while (1) { | |
323 | ssize_t sz = xread(in, data, sizeof(data)); | |
324 | if (sz <= 0) | |
325 | break; | |
326 | send_sideband(1, 2, data, sz, use_sideband); | |
327 | } | |
328 | close(in); | |
329 | return 0; | |
330 | } | |
331 | ||
b89363e4 JH |
332 | #define HMAC_BLOCK_SIZE 64 |
333 | ||
6f5ef44e | 334 | static void hmac_sha1(unsigned char *out, |
b89363e4 JH |
335 | const char *key_in, size_t key_len, |
336 | const char *text, size_t text_len) | |
337 | { | |
338 | unsigned char key[HMAC_BLOCK_SIZE]; | |
339 | unsigned char k_ipad[HMAC_BLOCK_SIZE]; | |
340 | unsigned char k_opad[HMAC_BLOCK_SIZE]; | |
341 | int i; | |
342 | git_SHA_CTX ctx; | |
343 | ||
344 | /* RFC 2104 2. (1) */ | |
345 | memset(key, '\0', HMAC_BLOCK_SIZE); | |
346 | if (HMAC_BLOCK_SIZE < key_len) { | |
347 | git_SHA1_Init(&ctx); | |
348 | git_SHA1_Update(&ctx, key_in, key_len); | |
349 | git_SHA1_Final(key, &ctx); | |
350 | } else { | |
351 | memcpy(key, key_in, key_len); | |
352 | } | |
353 | ||
354 | /* RFC 2104 2. (2) & (5) */ | |
355 | for (i = 0; i < sizeof(key); i++) { | |
356 | k_ipad[i] = key[i] ^ 0x36; | |
357 | k_opad[i] = key[i] ^ 0x5c; | |
358 | } | |
359 | ||
360 | /* RFC 2104 2. (3) & (4) */ | |
361 | git_SHA1_Init(&ctx); | |
362 | git_SHA1_Update(&ctx, k_ipad, sizeof(k_ipad)); | |
363 | git_SHA1_Update(&ctx, text, text_len); | |
364 | git_SHA1_Final(out, &ctx); | |
365 | ||
366 | /* RFC 2104 2. (6) & (7) */ | |
367 | git_SHA1_Init(&ctx); | |
368 | git_SHA1_Update(&ctx, k_opad, sizeof(k_opad)); | |
6f5ef44e | 369 | git_SHA1_Update(&ctx, out, 20); |
b89363e4 JH |
370 | git_SHA1_Final(out, &ctx); |
371 | } | |
372 | ||
373 | static char *prepare_push_cert_nonce(const char *path, unsigned long stamp) | |
374 | { | |
375 | struct strbuf buf = STRBUF_INIT; | |
376 | unsigned char sha1[20]; | |
377 | ||
378 | strbuf_addf(&buf, "%s:%lu", path, stamp); | |
379 | hmac_sha1(sha1, buf.buf, buf.len, cert_nonce_seed, strlen(cert_nonce_seed));; | |
380 | strbuf_release(&buf); | |
381 | ||
382 | /* RFC 2104 5. HMAC-SHA1-80 */ | |
383 | strbuf_addf(&buf, "%lu-%.*s", stamp, 20, sha1_to_hex(sha1)); | |
384 | return strbuf_detach(&buf, NULL); | |
385 | } | |
386 | ||
387 | /* | |
388 | * NEEDSWORK: reuse find_commit_header() from jk/commit-author-parsing | |
389 | * after dropping "_commit" from its name and possibly moving it out | |
390 | * of commit.c | |
391 | */ | |
392 | static char *find_header(const char *msg, size_t len, const char *key) | |
393 | { | |
394 | int key_len = strlen(key); | |
395 | const char *line = msg; | |
396 | ||
397 | while (line && line < msg + len) { | |
398 | const char *eol = strchrnul(line, '\n'); | |
399 | ||
400 | if ((msg + len <= eol) || line == eol) | |
401 | return NULL; | |
402 | if (line + key_len < eol && | |
403 | !memcmp(line, key, key_len) && line[key_len] == ' ') { | |
404 | int offset = key_len + 1; | |
405 | return xmemdupz(line + offset, (eol - line) - offset); | |
406 | } | |
407 | line = *eol ? eol + 1 : NULL; | |
408 | } | |
409 | return NULL; | |
410 | } | |
411 | ||
412 | static const char *check_nonce(const char *buf, size_t len) | |
413 | { | |
414 | char *nonce = find_header(buf, len, "nonce"); | |
5732373d JH |
415 | unsigned long stamp, ostamp; |
416 | char *bohmac, *expect = NULL; | |
b89363e4 JH |
417 | const char *retval = NONCE_BAD; |
418 | ||
419 | if (!nonce) { | |
420 | retval = NONCE_MISSING; | |
421 | goto leave; | |
422 | } else if (!push_cert_nonce) { | |
423 | retval = NONCE_UNSOLICITED; | |
424 | goto leave; | |
425 | } else if (!strcmp(push_cert_nonce, nonce)) { | |
426 | retval = NONCE_OK; | |
427 | goto leave; | |
428 | } | |
429 | ||
5732373d JH |
430 | if (!stateless_rpc) { |
431 | /* returned nonce MUST match what we gave out earlier */ | |
432 | retval = NONCE_BAD; | |
433 | goto leave; | |
434 | } | |
435 | ||
436 | /* | |
437 | * In stateless mode, we may be receiving a nonce issued by | |
438 | * another instance of the server that serving the same | |
439 | * repository, and the timestamps may not match, but the | |
440 | * nonce-seed and dir should match, so we can recompute and | |
441 | * report the time slop. | |
442 | * | |
443 | * In addition, when a nonce issued by another instance has | |
444 | * timestamp within receive.certnonceslop seconds, we pretend | |
445 | * as if we issued that nonce when reporting to the hook. | |
446 | */ | |
447 | ||
448 | /* nonce is concat(<seconds-since-epoch>, "-", <hmac>) */ | |
449 | if (*nonce <= '0' || '9' < *nonce) { | |
450 | retval = NONCE_BAD; | |
451 | goto leave; | |
452 | } | |
453 | stamp = strtoul(nonce, &bohmac, 10); | |
454 | if (bohmac == nonce || bohmac[0] != '-') { | |
455 | retval = NONCE_BAD; | |
456 | goto leave; | |
457 | } | |
458 | ||
459 | expect = prepare_push_cert_nonce(service_dir, stamp); | |
460 | if (strcmp(expect, nonce)) { | |
461 | /* Not what we would have signed earlier */ | |
462 | retval = NONCE_BAD; | |
463 | goto leave; | |
464 | } | |
465 | ||
466 | /* | |
467 | * By how many seconds is this nonce stale? Negative value | |
468 | * would mean it was issued by another server with its clock | |
469 | * skewed in the future. | |
470 | */ | |
471 | ostamp = strtoul(push_cert_nonce, NULL, 10); | |
472 | nonce_stamp_slop = (long)ostamp - (long)stamp; | |
473 | ||
474 | if (nonce_stamp_slop_limit && | |
31a8aa1e | 475 | labs(nonce_stamp_slop) <= nonce_stamp_slop_limit) { |
5732373d JH |
476 | /* |
477 | * Pretend as if the received nonce (which passes the | |
478 | * HMAC check, so it is not a forged by third-party) | |
479 | * is what we issued. | |
480 | */ | |
481 | free((void *)push_cert_nonce); | |
482 | push_cert_nonce = xstrdup(nonce); | |
483 | retval = NONCE_OK; | |
484 | } else { | |
485 | retval = NONCE_SLOP; | |
486 | } | |
b89363e4 JH |
487 | |
488 | leave: | |
489 | free(nonce); | |
5732373d | 490 | free(expect); |
b89363e4 JH |
491 | return retval; |
492 | } | |
493 | ||
a85b377d JH |
494 | static void prepare_push_cert_sha1(struct child_process *proc) |
495 | { | |
496 | static int already_done; | |
a85b377d JH |
497 | |
498 | if (!push_cert.len) | |
499 | return; | |
500 | ||
501 | if (!already_done) { | |
d05b9618 JH |
502 | struct strbuf gpg_output = STRBUF_INIT; |
503 | struct strbuf gpg_status = STRBUF_INIT; | |
504 | int bogs /* beginning_of_gpg_sig */; | |
505 | ||
a85b377d JH |
506 | already_done = 1; |
507 | if (write_sha1_file(push_cert.buf, push_cert.len, "blob", push_cert_sha1)) | |
508 | hashclr(push_cert_sha1); | |
d05b9618 JH |
509 | |
510 | memset(&sigcheck, '\0', sizeof(sigcheck)); | |
511 | sigcheck.result = 'N'; | |
512 | ||
513 | bogs = parse_signature(push_cert.buf, push_cert.len); | |
514 | if (verify_signed_buffer(push_cert.buf, bogs, | |
515 | push_cert.buf + bogs, push_cert.len - bogs, | |
516 | &gpg_output, &gpg_status) < 0) { | |
517 | ; /* error running gpg */ | |
518 | } else { | |
519 | sigcheck.payload = push_cert.buf; | |
520 | sigcheck.gpg_output = gpg_output.buf; | |
521 | sigcheck.gpg_status = gpg_status.buf; | |
522 | parse_gpg_output(&sigcheck); | |
523 | } | |
524 | ||
525 | strbuf_release(&gpg_output); | |
526 | strbuf_release(&gpg_status); | |
b89363e4 | 527 | nonce_status = check_nonce(push_cert.buf, bogs); |
a85b377d JH |
528 | } |
529 | if (!is_null_sha1(push_cert_sha1)) { | |
a9154590 RS |
530 | argv_array_pushf(&proc->env_array, "GIT_PUSH_CERT=%s", |
531 | sha1_to_hex(push_cert_sha1)); | |
532 | argv_array_pushf(&proc->env_array, "GIT_PUSH_CERT_SIGNER=%s", | |
d05b9618 | 533 | sigcheck.signer ? sigcheck.signer : ""); |
a9154590 | 534 | argv_array_pushf(&proc->env_array, "GIT_PUSH_CERT_KEY=%s", |
d05b9618 | 535 | sigcheck.key ? sigcheck.key : ""); |
a9154590 RS |
536 | argv_array_pushf(&proc->env_array, "GIT_PUSH_CERT_STATUS=%c", |
537 | sigcheck.result); | |
b89363e4 | 538 | if (push_cert_nonce) { |
a9154590 RS |
539 | argv_array_pushf(&proc->env_array, |
540 | "GIT_PUSH_CERT_NONCE=%s", | |
541 | push_cert_nonce); | |
542 | argv_array_pushf(&proc->env_array, | |
543 | "GIT_PUSH_CERT_NONCE_STATUS=%s", | |
544 | nonce_status); | |
5732373d | 545 | if (nonce_status == NONCE_SLOP) |
a9154590 RS |
546 | argv_array_pushf(&proc->env_array, |
547 | "GIT_PUSH_CERT_NONCE_SLOP=%ld", | |
5732373d | 548 | nonce_stamp_slop); |
b89363e4 | 549 | } |
a85b377d JH |
550 | } |
551 | } | |
552 | ||
9684e44a JH |
553 | typedef int (*feed_fn)(void *, const char **, size_t *); |
554 | static int run_and_feed_hook(const char *hook_name, feed_fn feed, void *feed_state) | |
b1bf95bb | 555 | { |
d3180279 | 556 | struct child_process proc = CHILD_PROCESS_INIT; |
6d525d38 | 557 | struct async muxer; |
f43cd49f | 558 | const char *argv[2]; |
9684e44a | 559 | int code; |
b1bf95bb | 560 | |
5a7da2dc AS |
561 | argv[0] = find_hook(hook_name); |
562 | if (!argv[0]) | |
b1bf95bb | 563 | return 0; |
c8dd2771 | 564 | |
f43cd49f SP |
565 | argv[1] = NULL; |
566 | ||
f43cd49f SP |
567 | proc.argv = argv; |
568 | proc.in = -1; | |
569 | proc.stdout_to_stderr = 1; | |
570 | ||
6d525d38 SP |
571 | if (use_sideband) { |
572 | memset(&muxer, 0, sizeof(muxer)); | |
573 | muxer.proc = copy_to_sideband; | |
574 | muxer.in = -1; | |
575 | code = start_async(&muxer); | |
576 | if (code) | |
577 | return code; | |
578 | proc.err = muxer.in; | |
579 | } | |
580 | ||
5d222c09 RS |
581 | prepare_push_cert_sha1(&proc); |
582 | ||
f43cd49f | 583 | code = start_command(&proc); |
6d525d38 SP |
584 | if (code) { |
585 | if (use_sideband) | |
586 | finish_async(&muxer); | |
90e41a89 | 587 | return code; |
6d525d38 SP |
588 | } |
589 | ||
ec7dbd14 JH |
590 | sigchain_push(SIGPIPE, SIG_IGN); |
591 | ||
9684e44a JH |
592 | while (1) { |
593 | const char *buf; | |
594 | size_t n; | |
595 | if (feed(feed_state, &buf, &n)) | |
596 | break; | |
597 | if (write_in_full(proc.in, buf, n) != n) | |
598 | break; | |
c8dd2771 | 599 | } |
e72ae288 | 600 | close(proc.in); |
6d525d38 SP |
601 | if (use_sideband) |
602 | finish_async(&muxer); | |
ec7dbd14 JH |
603 | |
604 | sigchain_pop(SIGPIPE); | |
605 | ||
90e41a89 | 606 | return finish_command(&proc); |
b1bf95bb JW |
607 | } |
608 | ||
9684e44a JH |
609 | struct receive_hook_feed_state { |
610 | struct command *cmd; | |
cdc2b2f3 | 611 | int skip_broken; |
9684e44a JH |
612 | struct strbuf buf; |
613 | }; | |
614 | ||
615 | static int feed_receive_hook(void *state_, const char **bufp, size_t *sizep) | |
616 | { | |
617 | struct receive_hook_feed_state *state = state_; | |
618 | struct command *cmd = state->cmd; | |
619 | ||
cdc2b2f3 JH |
620 | while (cmd && |
621 | state->skip_broken && (cmd->error_string || cmd->did_not_exist)) | |
9684e44a JH |
622 | cmd = cmd->next; |
623 | if (!cmd) | |
624 | return -1; /* EOF */ | |
625 | strbuf_reset(&state->buf); | |
626 | strbuf_addf(&state->buf, "%s %s %s\n", | |
627 | sha1_to_hex(cmd->old_sha1), sha1_to_hex(cmd->new_sha1), | |
628 | cmd->ref_name); | |
629 | state->cmd = cmd->next; | |
630 | if (bufp) { | |
631 | *bufp = state->buf.buf; | |
632 | *sizep = state->buf.len; | |
633 | } | |
634 | return 0; | |
635 | } | |
636 | ||
cdc2b2f3 JH |
637 | static int run_receive_hook(struct command *commands, const char *hook_name, |
638 | int skip_broken) | |
9684e44a JH |
639 | { |
640 | struct receive_hook_feed_state state; | |
641 | int status; | |
642 | ||
643 | strbuf_init(&state.buf, 0); | |
644 | state.cmd = commands; | |
cdc2b2f3 | 645 | state.skip_broken = skip_broken; |
9684e44a JH |
646 | if (feed_receive_hook(&state, NULL, NULL)) |
647 | return 0; | |
648 | state.cmd = commands; | |
649 | status = run_and_feed_hook(hook_name, feed_receive_hook, &state); | |
650 | strbuf_release(&state.buf); | |
651 | return status; | |
652 | } | |
653 | ||
1d9e8b56 SP |
654 | static int run_update_hook(struct command *cmd) |
655 | { | |
1d9e8b56 | 656 | const char *argv[5]; |
d3180279 | 657 | struct child_process proc = CHILD_PROCESS_INIT; |
6d525d38 | 658 | int code; |
1d9e8b56 | 659 | |
5a7da2dc AS |
660 | argv[0] = find_hook("update"); |
661 | if (!argv[0]) | |
1d9e8b56 SP |
662 | return 0; |
663 | ||
1d9e8b56 SP |
664 | argv[1] = cmd->ref_name; |
665 | argv[2] = sha1_to_hex(cmd->old_sha1); | |
666 | argv[3] = sha1_to_hex(cmd->new_sha1); | |
667 | argv[4] = NULL; | |
668 | ||
6d525d38 SP |
669 | proc.no_stdin = 1; |
670 | proc.stdout_to_stderr = 1; | |
671 | proc.err = use_sideband ? -1 : 0; | |
672 | proc.argv = argv; | |
673 | ||
674 | code = start_command(&proc); | |
675 | if (code) | |
676 | return code; | |
677 | if (use_sideband) | |
678 | copy_to_sideband(proc.err, -1, NULL); | |
679 | return finish_command(&proc); | |
1d9e8b56 SP |
680 | } |
681 | ||
986e8239 JK |
682 | static int is_ref_checked_out(const char *ref) |
683 | { | |
986e8239 JK |
684 | if (is_bare_repository()) |
685 | return 0; | |
686 | ||
747ca245 | 687 | if (!head_name) |
986e8239 | 688 | return 0; |
747ca245 | 689 | return !strcmp(head_name, ref); |
986e8239 JK |
690 | } |
691 | ||
acd2a45b JH |
692 | static char *refuse_unconfigured_deny_msg[] = { |
693 | "By default, updating the current branch in a non-bare repository", | |
694 | "is denied, because it will make the index and work tree inconsistent", | |
695 | "with what you pushed, and will require 'git reset --hard' to match", | |
696 | "the work tree to HEAD.", | |
3d95d92b JH |
697 | "", |
698 | "You can set 'receive.denyCurrentBranch' configuration variable to", | |
acd2a45b JH |
699 | "'ignore' or 'warn' in the remote repository to allow pushing into", |
700 | "its current branch; however, this is not recommended unless you", | |
701 | "arranged to update its work tree to match what you pushed in some", | |
702 | "other way.", | |
3d95d92b | 703 | "", |
acd2a45b JH |
704 | "To squelch this message and still keep the default behaviour, set", |
705 | "'receive.denyCurrentBranch' configuration variable to 'refuse'." | |
3d95d92b JH |
706 | }; |
707 | ||
acd2a45b | 708 | static void refuse_unconfigured_deny(void) |
3d95d92b JH |
709 | { |
710 | int i; | |
acd2a45b | 711 | for (i = 0; i < ARRAY_SIZE(refuse_unconfigured_deny_msg); i++) |
a886ba28 | 712 | rp_error("%s", refuse_unconfigured_deny_msg[i]); |
3d95d92b JH |
713 | } |
714 | ||
375881fa JH |
715 | static char *refuse_unconfigured_deny_delete_current_msg[] = { |
716 | "By default, deleting the current branch is denied, because the next", | |
717 | "'git clone' won't result in any file checked out, causing confusion.", | |
747ca245 JH |
718 | "", |
719 | "You can set 'receive.denyDeleteCurrent' configuration variable to", | |
375881fa JH |
720 | "'warn' or 'ignore' in the remote repository to allow deleting the", |
721 | "current branch, with or without a warning message.", | |
747ca245 | 722 | "", |
375881fa | 723 | "To squelch this message, you can set it to 'refuse'." |
747ca245 JH |
724 | }; |
725 | ||
375881fa | 726 | static void refuse_unconfigured_deny_delete_current(void) |
747ca245 JH |
727 | { |
728 | int i; | |
729 | for (i = 0; | |
375881fa | 730 | i < ARRAY_SIZE(refuse_unconfigured_deny_delete_current_msg); |
747ca245 | 731 | i++) |
a886ba28 | 732 | rp_error("%s", refuse_unconfigured_deny_delete_current_msg[i]); |
747ca245 JH |
733 | } |
734 | ||
0a1bc12b NTND |
735 | static int command_singleton_iterator(void *cb_data, unsigned char sha1[20]); |
736 | static int update_shallow_ref(struct command *cmd, struct shallow_info *si) | |
737 | { | |
738 | static struct lock_file shallow_lock; | |
739 | struct sha1_array extra = SHA1_ARRAY_INIT; | |
7043c707 | 740 | struct check_connected_options opt = CHECK_CONNECTED_INIT; |
0a1bc12b NTND |
741 | uint32_t mask = 1 << (cmd->index % 32); |
742 | int i; | |
743 | ||
6aa30857 | 744 | trace_printf_key(&trace_shallow, |
0a1bc12b NTND |
745 | "shallow: update_shallow_ref %s\n", cmd->ref_name); |
746 | for (i = 0; i < si->shallow->nr; i++) | |
747 | if (si->used_shallow[i] && | |
748 | (si->used_shallow[i][cmd->index / 32] & mask) && | |
749 | !delayed_reachability_test(si, i)) | |
750 | sha1_array_append(&extra, si->shallow->sha1[i]); | |
751 | ||
7043c707 JK |
752 | setup_alternate_shallow(&shallow_lock, &opt.shallow_file, &extra); |
753 | if (check_connected(command_singleton_iterator, cmd, &opt)) { | |
0a1bc12b NTND |
754 | rollback_lock_file(&shallow_lock); |
755 | sha1_array_clear(&extra); | |
756 | return -1; | |
757 | } | |
758 | ||
759 | commit_lock_file(&shallow_lock); | |
760 | ||
761 | /* | |
762 | * Make sure setup_alternate_shallow() for the next ref does | |
763 | * not lose these new roots.. | |
764 | */ | |
765 | for (i = 0; i < extra.nr; i++) | |
766 | register_shallow(extra.sha1[i]); | |
767 | ||
768 | si->shallow_ref[cmd->index] = 0; | |
769 | sha1_array_clear(&extra); | |
770 | return 0; | |
771 | } | |
772 | ||
1a51b524 JH |
773 | /* |
774 | * NEEDSWORK: we should consolidate various implementions of "are we | |
775 | * on an unborn branch?" test into one, and make the unified one more | |
776 | * robust. !get_sha1() based check used here and elsewhere would not | |
777 | * allow us to tell an unborn branch from corrupt ref, for example. | |
778 | * For the purpose of fixing "deploy-to-update does not work when | |
779 | * pushing into an empty repository" issue, this should suffice for | |
780 | * now. | |
781 | */ | |
782 | static int head_has_history(void) | |
783 | { | |
784 | unsigned char sha1[20]; | |
785 | ||
786 | return !get_sha1("HEAD", sha1); | |
787 | } | |
788 | ||
21b138d0 JH |
789 | static const char *push_to_deploy(unsigned char *sha1, |
790 | struct argv_array *env, | |
791 | const char *work_tree) | |
1404bcbb JS |
792 | { |
793 | const char *update_refresh[] = { | |
794 | "update-index", "-q", "--ignore-submodules", "--refresh", NULL | |
795 | }; | |
796 | const char *diff_files[] = { | |
797 | "diff-files", "--quiet", "--ignore-submodules", "--", NULL | |
798 | }; | |
799 | const char *diff_index[] = { | |
800 | "diff-index", "--quiet", "--cached", "--ignore-submodules", | |
1a51b524 | 801 | NULL, "--", NULL |
1404bcbb JS |
802 | }; |
803 | const char *read_tree[] = { | |
804 | "read-tree", "-u", "-m", NULL, NULL | |
805 | }; | |
1404bcbb JS |
806 | struct child_process child = CHILD_PROCESS_INIT; |
807 | ||
1404bcbb | 808 | child.argv = update_refresh; |
21b138d0 | 809 | child.env = env->argv; |
1404bcbb JS |
810 | child.dir = work_tree; |
811 | child.no_stdin = 1; | |
812 | child.stdout_to_stderr = 1; | |
813 | child.git_cmd = 1; | |
21b138d0 | 814 | if (run_command(&child)) |
1404bcbb | 815 | return "Up-to-date check failed"; |
1404bcbb JS |
816 | |
817 | /* run_command() does not clean up completely; reinitialize */ | |
818 | child_process_init(&child); | |
819 | child.argv = diff_files; | |
21b138d0 | 820 | child.env = env->argv; |
1404bcbb JS |
821 | child.dir = work_tree; |
822 | child.no_stdin = 1; | |
823 | child.stdout_to_stderr = 1; | |
824 | child.git_cmd = 1; | |
21b138d0 | 825 | if (run_command(&child)) |
1404bcbb | 826 | return "Working directory has unstaged changes"; |
1404bcbb | 827 | |
1a51b524 JH |
828 | /* diff-index with either HEAD or an empty tree */ |
829 | diff_index[4] = head_has_history() ? "HEAD" : EMPTY_TREE_SHA1_HEX; | |
830 | ||
1404bcbb JS |
831 | child_process_init(&child); |
832 | child.argv = diff_index; | |
21b138d0 | 833 | child.env = env->argv; |
1404bcbb JS |
834 | child.no_stdin = 1; |
835 | child.no_stdout = 1; | |
836 | child.stdout_to_stderr = 0; | |
837 | child.git_cmd = 1; | |
21b138d0 | 838 | if (run_command(&child)) |
1404bcbb | 839 | return "Working directory has staged changes"; |
1404bcbb JS |
840 | |
841 | read_tree[3] = sha1_to_hex(sha1); | |
842 | child_process_init(&child); | |
843 | child.argv = read_tree; | |
21b138d0 | 844 | child.env = env->argv; |
1404bcbb JS |
845 | child.dir = work_tree; |
846 | child.no_stdin = 1; | |
847 | child.no_stdout = 1; | |
848 | child.stdout_to_stderr = 0; | |
849 | child.git_cmd = 1; | |
21b138d0 | 850 | if (run_command(&child)) |
1404bcbb | 851 | return "Could not update working tree to new HEAD"; |
1404bcbb | 852 | |
1404bcbb JS |
853 | return NULL; |
854 | } | |
855 | ||
08553319 JH |
856 | static const char *push_to_checkout_hook = "push-to-checkout"; |
857 | ||
858 | static const char *push_to_checkout(unsigned char *sha1, | |
859 | struct argv_array *env, | |
860 | const char *work_tree) | |
861 | { | |
862 | argv_array_pushf(env, "GIT_WORK_TREE=%s", absolute_path(work_tree)); | |
863 | if (run_hook_le(env->argv, push_to_checkout_hook, | |
864 | sha1_to_hex(sha1), NULL)) | |
865 | return "push-to-checkout hook declined"; | |
866 | else | |
867 | return NULL; | |
868 | } | |
869 | ||
21b138d0 JH |
870 | static const char *update_worktree(unsigned char *sha1) |
871 | { | |
872 | const char *retval; | |
873 | const char *work_tree = git_work_tree_cfg ? git_work_tree_cfg : ".."; | |
874 | struct argv_array env = ARGV_ARRAY_INIT; | |
875 | ||
876 | if (is_bare_repository()) | |
877 | return "denyCurrentBranch = updateInstead needs a worktree"; | |
878 | ||
879 | argv_array_pushf(&env, "GIT_DIR=%s", absolute_path(get_git_dir())); | |
880 | ||
08553319 JH |
881 | if (!find_hook(push_to_checkout_hook)) |
882 | retval = push_to_deploy(sha1, &env, work_tree); | |
883 | else | |
884 | retval = push_to_checkout(sha1, &env, work_tree); | |
21b138d0 JH |
885 | |
886 | argv_array_clear(&env); | |
887 | return retval; | |
888 | } | |
889 | ||
0a1bc12b | 890 | static const char *update(struct command *cmd, struct shallow_info *si) |
2eca23da | 891 | { |
cfee10a7 | 892 | const char *name = cmd->ref_name; |
6b01ecfe | 893 | struct strbuf namespaced_name_buf = STRBUF_INIT; |
1404bcbb | 894 | const char *namespaced_name, *ret; |
cfee10a7 JH |
895 | unsigned char *old_sha1 = cmd->old_sha1; |
896 | unsigned char *new_sha1 = cmd->new_sha1; | |
2eca23da | 897 | |
061d6b9a | 898 | /* only refs/... are allowed */ |
59556548 | 899 | if (!starts_with(name, "refs/") || check_refname_format(name + 5, 0)) { |
466dbc42 | 900 | rp_error("refusing to create funny ref '%s' remotely", name); |
8aaf7d64 | 901 | return "funny refname"; |
cfee10a7 | 902 | } |
d8a1deec | 903 | |
6b01ecfe JT |
904 | strbuf_addf(&namespaced_name_buf, "%s%s", get_git_namespace(), name); |
905 | namespaced_name = strbuf_detach(&namespaced_name_buf, NULL); | |
906 | ||
907 | if (is_ref_checked_out(namespaced_name)) { | |
3d95d92b JH |
908 | switch (deny_current_branch) { |
909 | case DENY_IGNORE: | |
986e8239 | 910 | break; |
3d95d92b | 911 | case DENY_WARN: |
466dbc42 | 912 | rp_warning("updating the current branch"); |
986e8239 | 913 | break; |
3d95d92b | 914 | case DENY_REFUSE: |
acd2a45b | 915 | case DENY_UNCONFIGURED: |
466dbc42 | 916 | rp_error("refusing to update checked out branch: %s", name); |
acd2a45b JH |
917 | if (deny_current_branch == DENY_UNCONFIGURED) |
918 | refuse_unconfigured_deny(); | |
3d95d92b | 919 | return "branch is currently checked out"; |
1404bcbb JS |
920 | case DENY_UPDATE_INSTEAD: |
921 | ret = update_worktree(new_sha1); | |
922 | if (ret) | |
923 | return ret; | |
924 | break; | |
3d95d92b | 925 | } |
986e8239 JK |
926 | } |
927 | ||
d4f694ba | 928 | if (!is_null_sha1(new_sha1) && !has_sha1_file(new_sha1)) { |
8aaf7d64 SP |
929 | error("unpack should have generated %s, " |
930 | "but I can't find it!", sha1_to_hex(new_sha1)); | |
931 | return "bad pack"; | |
cfee10a7 | 932 | } |
747ca245 JH |
933 | |
934 | if (!is_null_sha1(old_sha1) && is_null_sha1(new_sha1)) { | |
59556548 | 935 | if (deny_deletes && starts_with(name, "refs/heads/")) { |
466dbc42 | 936 | rp_error("denying ref deletion for %s", name); |
747ca245 JH |
937 | return "deletion prohibited"; |
938 | } | |
939 | ||
b112b14d | 940 | if (head_name && !strcmp(namespaced_name, head_name)) { |
747ca245 JH |
941 | switch (deny_delete_current) { |
942 | case DENY_IGNORE: | |
943 | break; | |
944 | case DENY_WARN: | |
466dbc42 | 945 | rp_warning("deleting the current branch"); |
747ca245 JH |
946 | break; |
947 | case DENY_REFUSE: | |
375881fa | 948 | case DENY_UNCONFIGURED: |
1404bcbb | 949 | case DENY_UPDATE_INSTEAD: |
375881fa JH |
950 | if (deny_delete_current == DENY_UNCONFIGURED) |
951 | refuse_unconfigured_deny_delete_current(); | |
466dbc42 | 952 | rp_error("refusing to delete the current branch: %s", name); |
747ca245 | 953 | return "deletion of the current branch prohibited"; |
1404bcbb JS |
954 | default: |
955 | return "Invalid denyDeleteCurrent setting"; | |
747ca245 JH |
956 | } |
957 | } | |
a240de11 | 958 | } |
747ca245 | 959 | |
d4f694ba | 960 | if (deny_non_fast_forwards && !is_null_sha1(new_sha1) && |
ba988a83 | 961 | !is_null_sha1(old_sha1) && |
59556548 | 962 | starts_with(name, "refs/heads/")) { |
eab82707 | 963 | struct object *old_object, *new_object; |
11031d7e | 964 | struct commit *old_commit, *new_commit; |
11031d7e | 965 | |
eab82707 MK |
966 | old_object = parse_object(old_sha1); |
967 | new_object = parse_object(new_sha1); | |
968 | ||
969 | if (!old_object || !new_object || | |
970 | old_object->type != OBJ_COMMIT || | |
971 | new_object->type != OBJ_COMMIT) { | |
972 | error("bad sha1 objects for %s", name); | |
973 | return "bad ref"; | |
974 | } | |
975 | old_commit = (struct commit *)old_object; | |
976 | new_commit = (struct commit *)new_object; | |
5d55915c | 977 | if (!in_merge_bases(old_commit, new_commit)) { |
466dbc42 SP |
978 | rp_error("denying non-fast-forward %s" |
979 | " (you should pull first)", name); | |
a75d7b54 | 980 | return "non-fast-forward"; |
8aaf7d64 | 981 | } |
11031d7e | 982 | } |
1d9e8b56 | 983 | if (run_update_hook(cmd)) { |
466dbc42 | 984 | rp_error("hook declined to update %s", name); |
8aaf7d64 | 985 | return "hook declined"; |
b1bf95bb | 986 | } |
3159c8dc | 987 | |
d4f694ba | 988 | if (is_null_sha1(new_sha1)) { |
222368c6 | 989 | struct strbuf err = STRBUF_INIT; |
28391a80 | 990 | if (!parse_object(old_sha1)) { |
28391a80 | 991 | old_sha1 = NULL; |
160b81ed PYH |
992 | if (ref_exists(name)) { |
993 | rp_warning("Allowing deletion of corrupt ref."); | |
994 | } else { | |
995 | rp_warning("Deleting a non-existent ref."); | |
996 | cmd->did_not_exist = 1; | |
997 | } | |
28391a80 | 998 | } |
222368c6 SB |
999 | if (ref_transaction_delete(transaction, |
1000 | namespaced_name, | |
1001 | old_sha1, | |
fb5a6bb6 | 1002 | 0, "push", &err)) { |
222368c6 SB |
1003 | rp_error("%s", err.buf); |
1004 | strbuf_release(&err); | |
8aaf7d64 | 1005 | return "failed to delete"; |
d4f694ba | 1006 | } |
222368c6 | 1007 | strbuf_release(&err); |
8aaf7d64 | 1008 | return NULL; /* good */ |
d4f694ba JH |
1009 | } |
1010 | else { | |
6629ea2d | 1011 | struct strbuf err = STRBUF_INIT; |
0a1bc12b NTND |
1012 | if (shallow_update && si->shallow_ref[cmd->index] && |
1013 | update_shallow_ref(cmd, si)) | |
1014 | return "shallow error"; | |
1015 | ||
222368c6 SB |
1016 | if (ref_transaction_update(transaction, |
1017 | namespaced_name, | |
1018 | new_sha1, old_sha1, | |
1d147bdf | 1019 | 0, "push", |
222368c6 | 1020 | &err)) { |
6629ea2d RS |
1021 | rp_error("%s", err.buf); |
1022 | strbuf_release(&err); | |
222368c6 | 1023 | |
6629ea2d | 1024 | return "failed to update ref"; |
ef203f08 | 1025 | } |
6629ea2d | 1026 | strbuf_release(&err); |
222368c6 | 1027 | |
8aaf7d64 | 1028 | return NULL; /* good */ |
19614330 | 1029 | } |
2eca23da LT |
1030 | } |
1031 | ||
5e1c71fd | 1032 | static void run_update_post_hook(struct command *commands) |
19614330 | 1033 | { |
5e1c71fd | 1034 | struct command *cmd; |
6d525d38 | 1035 | int argc; |
d3180279 | 1036 | struct child_process proc = CHILD_PROCESS_INIT; |
dcf69262 | 1037 | const char *hook; |
19614330 | 1038 | |
5a7da2dc | 1039 | hook = find_hook("post-update"); |
5e1c71fd | 1040 | for (argc = 0, cmd = commands; cmd; cmd = cmd->next) { |
160b81ed | 1041 | if (cmd->error_string || cmd->did_not_exist) |
19614330 JH |
1042 | continue; |
1043 | argc++; | |
1044 | } | |
5a7da2dc | 1045 | if (!argc || !hook) |
3e6e152c | 1046 | return; |
5a7da2dc | 1047 | |
850d2fec JK |
1048 | argv_array_push(&proc.args, hook); |
1049 | for (cmd = commands; cmd; cmd = cmd->next) { | |
160b81ed | 1050 | if (cmd->error_string || cmd->did_not_exist) |
19614330 | 1051 | continue; |
850d2fec | 1052 | argv_array_push(&proc.args, cmd->ref_name); |
19614330 | 1053 | } |
6d525d38 | 1054 | |
6d525d38 SP |
1055 | proc.no_stdin = 1; |
1056 | proc.stdout_to_stderr = 1; | |
1057 | proc.err = use_sideband ? -1 : 0; | |
6d525d38 SP |
1058 | |
1059 | if (!start_command(&proc)) { | |
1060 | if (use_sideband) | |
1061 | copy_to_sideband(proc.err, -1, NULL); | |
1062 | finish_command(&proc); | |
1063 | } | |
19614330 | 1064 | } |
2eca23da | 1065 | |
da3efdb1 JS |
1066 | static void check_aliased_update(struct command *cmd, struct string_list *list) |
1067 | { | |
6b01ecfe JT |
1068 | struct strbuf buf = STRBUF_INIT; |
1069 | const char *dst_name; | |
da3efdb1 JS |
1070 | struct string_list_item *item; |
1071 | struct command *dst_cmd; | |
d59f765a JK |
1072 | unsigned char sha1[GIT_SHA1_RAWSZ]; |
1073 | char cmd_oldh[GIT_SHA1_HEXSZ + 1], | |
1074 | cmd_newh[GIT_SHA1_HEXSZ + 1], | |
1075 | dst_oldh[GIT_SHA1_HEXSZ + 1], | |
1076 | dst_newh[GIT_SHA1_HEXSZ + 1]; | |
da3efdb1 JS |
1077 | int flag; |
1078 | ||
6b01ecfe | 1079 | strbuf_addf(&buf, "%s%s", get_git_namespace(), cmd->ref_name); |
7695d118 | 1080 | dst_name = resolve_ref_unsafe(buf.buf, 0, sha1, &flag); |
6b01ecfe | 1081 | strbuf_release(&buf); |
da3efdb1 JS |
1082 | |
1083 | if (!(flag & REF_ISSYMREF)) | |
1084 | return; | |
1085 | ||
6b01ecfe JT |
1086 | if (!dst_name) { |
1087 | rp_error("refusing update to broken symref '%s'", cmd->ref_name); | |
1088 | cmd->skip_update = 1; | |
1089 | cmd->error_string = "broken symref"; | |
1090 | return; | |
1091 | } | |
ded83936 | 1092 | dst_name = strip_namespace(dst_name); |
6b01ecfe | 1093 | |
e8c8b713 | 1094 | if ((item = string_list_lookup(list, dst_name)) == NULL) |
da3efdb1 JS |
1095 | return; |
1096 | ||
1097 | cmd->skip_update = 1; | |
1098 | ||
1099 | dst_cmd = (struct command *) item->util; | |
1100 | ||
1101 | if (!hashcmp(cmd->old_sha1, dst_cmd->old_sha1) && | |
1102 | !hashcmp(cmd->new_sha1, dst_cmd->new_sha1)) | |
1103 | return; | |
1104 | ||
1105 | dst_cmd->skip_update = 1; | |
1106 | ||
d59f765a JK |
1107 | find_unique_abbrev_r(cmd_oldh, cmd->old_sha1, DEFAULT_ABBREV); |
1108 | find_unique_abbrev_r(cmd_newh, cmd->new_sha1, DEFAULT_ABBREV); | |
1109 | find_unique_abbrev_r(dst_oldh, dst_cmd->old_sha1, DEFAULT_ABBREV); | |
1110 | find_unique_abbrev_r(dst_newh, dst_cmd->new_sha1, DEFAULT_ABBREV); | |
da3efdb1 JS |
1111 | rp_error("refusing inconsistent update between symref '%s' (%s..%s) and" |
1112 | " its target '%s' (%s..%s)", | |
1113 | cmd->ref_name, cmd_oldh, cmd_newh, | |
1114 | dst_cmd->ref_name, dst_oldh, dst_newh); | |
1115 | ||
1116 | cmd->error_string = dst_cmd->error_string = | |
1117 | "inconsistent aliased update"; | |
1118 | } | |
1119 | ||
1120 | static void check_aliased_updates(struct command *commands) | |
1121 | { | |
1122 | struct command *cmd; | |
183113a5 | 1123 | struct string_list ref_list = STRING_LIST_INIT_NODUP; |
da3efdb1 JS |
1124 | |
1125 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1126 | struct string_list_item *item = | |
1d2f80fa | 1127 | string_list_append(&ref_list, cmd->ref_name); |
da3efdb1 JS |
1128 | item->util = (void *)cmd; |
1129 | } | |
3383e199 | 1130 | string_list_sort(&ref_list); |
da3efdb1 | 1131 | |
ef7e93d9 CB |
1132 | for (cmd = commands; cmd; cmd = cmd->next) { |
1133 | if (!cmd->error_string) | |
1134 | check_aliased_update(cmd, &ref_list); | |
1135 | } | |
da3efdb1 JS |
1136 | |
1137 | string_list_clear(&ref_list, 0); | |
1138 | } | |
1139 | ||
52fed6e1 JH |
1140 | static int command_singleton_iterator(void *cb_data, unsigned char sha1[20]) |
1141 | { | |
1142 | struct command **cmd_list = cb_data; | |
1143 | struct command *cmd = *cmd_list; | |
1144 | ||
ee6dfb2d | 1145 | if (!cmd || is_null_sha1(cmd->new_sha1)) |
52fed6e1 JH |
1146 | return -1; /* end of list */ |
1147 | *cmd_list = NULL; /* this returns only one */ | |
1148 | hashcpy(sha1, cmd->new_sha1); | |
1149 | return 0; | |
1150 | } | |
1151 | ||
0a1bc12b NTND |
1152 | static void set_connectivity_errors(struct command *commands, |
1153 | struct shallow_info *si) | |
52fed6e1 JH |
1154 | { |
1155 | struct command *cmd; | |
1156 | ||
1157 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1158 | struct command *singleton = cmd; | |
0a1bc12b NTND |
1159 | if (shallow_update && si->shallow_ref[cmd->index]) |
1160 | /* to be checked in update_shallow_ref() */ | |
1161 | continue; | |
7043c707 JK |
1162 | if (!check_connected(command_singleton_iterator, &singleton, |
1163 | NULL)) | |
52fed6e1 JH |
1164 | continue; |
1165 | cmd->error_string = "missing necessary objects"; | |
1166 | } | |
1167 | } | |
1168 | ||
0a1bc12b NTND |
1169 | struct iterate_data { |
1170 | struct command *cmds; | |
1171 | struct shallow_info *si; | |
1172 | }; | |
1173 | ||
52fed6e1 JH |
1174 | static int iterate_receive_command_list(void *cb_data, unsigned char sha1[20]) |
1175 | { | |
0a1bc12b NTND |
1176 | struct iterate_data *data = cb_data; |
1177 | struct command **cmd_list = &data->cmds; | |
52fed6e1 JH |
1178 | struct command *cmd = *cmd_list; |
1179 | ||
0a1bc12b NTND |
1180 | for (; cmd; cmd = cmd->next) { |
1181 | if (shallow_update && data->si->shallow_ref[cmd->index]) | |
1182 | /* to be checked in update_shallow_ref() */ | |
1183 | continue; | |
5dbd7676 | 1184 | if (!is_null_sha1(cmd->new_sha1) && !cmd->skip_update) { |
ee6dfb2d JH |
1185 | hashcpy(sha1, cmd->new_sha1); |
1186 | *cmd_list = cmd->next; | |
1187 | return 0; | |
1188 | } | |
ee6dfb2d JH |
1189 | } |
1190 | *cmd_list = NULL; | |
1191 | return -1; /* end of list */ | |
52fed6e1 JH |
1192 | } |
1193 | ||
daebaa78 JH |
1194 | static void reject_updates_to_hidden(struct command *commands) |
1195 | { | |
78a766ab LF |
1196 | struct strbuf refname_full = STRBUF_INIT; |
1197 | size_t prefix_len; | |
daebaa78 JH |
1198 | struct command *cmd; |
1199 | ||
78a766ab LF |
1200 | strbuf_addstr(&refname_full, get_git_namespace()); |
1201 | prefix_len = refname_full.len; | |
1202 | ||
daebaa78 | 1203 | for (cmd = commands; cmd; cmd = cmd->next) { |
78a766ab LF |
1204 | if (cmd->error_string) |
1205 | continue; | |
1206 | ||
1207 | strbuf_setlen(&refname_full, prefix_len); | |
1208 | strbuf_addstr(&refname_full, cmd->ref_name); | |
1209 | ||
1210 | if (!ref_is_hidden(cmd->ref_name, refname_full.buf)) | |
daebaa78 JH |
1211 | continue; |
1212 | if (is_null_sha1(cmd->new_sha1)) | |
1213 | cmd->error_string = "deny deleting a hidden ref"; | |
1214 | else | |
1215 | cmd->error_string = "deny updating a hidden ref"; | |
1216 | } | |
78a766ab LF |
1217 | |
1218 | strbuf_release(&refname_full); | |
daebaa78 JH |
1219 | } |
1220 | ||
a6a84319 SB |
1221 | static int should_process_cmd(struct command *cmd) |
1222 | { | |
1223 | return !cmd->error_string && !cmd->skip_update; | |
1224 | } | |
1225 | ||
1226 | static void warn_if_skipped_connectivity_check(struct command *commands, | |
1227 | struct shallow_info *si) | |
1228 | { | |
1229 | struct command *cmd; | |
1230 | int checked_connectivity = 1; | |
1231 | ||
1232 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1233 | if (should_process_cmd(cmd) && si->shallow_ref[cmd->index]) { | |
1234 | error("BUG: connectivity check has not been run on ref %s", | |
1235 | cmd->ref_name); | |
1236 | checked_connectivity = 0; | |
1237 | } | |
1238 | } | |
1239 | if (!checked_connectivity) | |
b6a47885 | 1240 | die("BUG: connectivity check skipped???"); |
a6a84319 SB |
1241 | } |
1242 | ||
a1a26145 SB |
1243 | static void execute_commands_non_atomic(struct command *commands, |
1244 | struct shallow_info *si) | |
1245 | { | |
1246 | struct command *cmd; | |
222368c6 SB |
1247 | struct strbuf err = STRBUF_INIT; |
1248 | ||
a1a26145 SB |
1249 | for (cmd = commands; cmd; cmd = cmd->next) { |
1250 | if (!should_process_cmd(cmd)) | |
1251 | continue; | |
1252 | ||
222368c6 SB |
1253 | transaction = ref_transaction_begin(&err); |
1254 | if (!transaction) { | |
1255 | rp_error("%s", err.buf); | |
1256 | strbuf_reset(&err); | |
1257 | cmd->error_string = "transaction failed to start"; | |
1258 | continue; | |
1259 | } | |
1260 | ||
a1a26145 | 1261 | cmd->error_string = update(cmd, si); |
222368c6 SB |
1262 | |
1263 | if (!cmd->error_string | |
1264 | && ref_transaction_commit(transaction, &err)) { | |
1265 | rp_error("%s", err.buf); | |
1266 | strbuf_reset(&err); | |
1267 | cmd->error_string = "failed to update ref"; | |
1268 | } | |
1269 | ref_transaction_free(transaction); | |
a1a26145 | 1270 | } |
68deed29 SB |
1271 | strbuf_release(&err); |
1272 | } | |
222368c6 | 1273 | |
68deed29 SB |
1274 | static void execute_commands_atomic(struct command *commands, |
1275 | struct shallow_info *si) | |
1276 | { | |
1277 | struct command *cmd; | |
1278 | struct strbuf err = STRBUF_INIT; | |
1279 | const char *reported_error = "atomic push failure"; | |
1280 | ||
1281 | transaction = ref_transaction_begin(&err); | |
1282 | if (!transaction) { | |
1283 | rp_error("%s", err.buf); | |
1284 | strbuf_reset(&err); | |
1285 | reported_error = "transaction failed to start"; | |
1286 | goto failure; | |
1287 | } | |
1288 | ||
1289 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1290 | if (!should_process_cmd(cmd)) | |
1291 | continue; | |
1292 | ||
1293 | cmd->error_string = update(cmd, si); | |
1294 | ||
1295 | if (cmd->error_string) | |
1296 | goto failure; | |
1297 | } | |
1298 | ||
1299 | if (ref_transaction_commit(transaction, &err)) { | |
1300 | rp_error("%s", err.buf); | |
1301 | reported_error = "atomic transaction failed"; | |
1302 | goto failure; | |
1303 | } | |
1304 | goto cleanup; | |
1305 | ||
1306 | failure: | |
1307 | for (cmd = commands; cmd; cmd = cmd->next) | |
1308 | if (!cmd->error_string) | |
1309 | cmd->error_string = reported_error; | |
1310 | ||
1311 | cleanup: | |
1312 | ref_transaction_free(transaction); | |
222368c6 | 1313 | strbuf_release(&err); |
a1a26145 SB |
1314 | } |
1315 | ||
0a1bc12b NTND |
1316 | static void execute_commands(struct command *commands, |
1317 | const char *unpacker_error, | |
1318 | struct shallow_info *si) | |
575f4974 | 1319 | { |
5e1c71fd | 1320 | struct command *cmd; |
747ca245 | 1321 | unsigned char sha1[20]; |
0a1bc12b | 1322 | struct iterate_data data; |
8aaf7d64 SP |
1323 | |
1324 | if (unpacker_error) { | |
5e1c71fd | 1325 | for (cmd = commands; cmd; cmd = cmd->next) |
74eb32d3 | 1326 | cmd->error_string = "unpacker error"; |
8aaf7d64 SP |
1327 | return; |
1328 | } | |
1329 | ||
0a1bc12b NTND |
1330 | data.cmds = commands; |
1331 | data.si = si; | |
7043c707 | 1332 | if (check_connected(iterate_receive_command_list, &data, NULL)) |
0a1bc12b | 1333 | set_connectivity_errors(commands, si); |
52fed6e1 | 1334 | |
daebaa78 JH |
1335 | reject_updates_to_hidden(commands); |
1336 | ||
5a7da2dc | 1337 | if (run_receive_hook(commands, "pre-receive", 0)) { |
ef7e93d9 CB |
1338 | for (cmd = commands; cmd; cmd = cmd->next) { |
1339 | if (!cmd->error_string) | |
1340 | cmd->error_string = "pre-receive hook declined"; | |
1341 | } | |
05ef58ec SP |
1342 | return; |
1343 | } | |
1344 | ||
da3efdb1 JS |
1345 | check_aliased_updates(commands); |
1346 | ||
96ec7b1e | 1347 | free(head_name_to_free); |
7695d118 | 1348 | head_name = head_name_to_free = resolve_refdup("HEAD", 0, sha1, NULL); |
747ca245 | 1349 | |
68deed29 SB |
1350 | if (use_atomic) |
1351 | execute_commands_atomic(commands, si); | |
1352 | else | |
1353 | execute_commands_non_atomic(commands, si); | |
0a1bc12b | 1354 | |
a6a84319 SB |
1355 | if (shallow_update) |
1356 | warn_if_skipped_connectivity_check(commands, si); | |
575f4974 LT |
1357 | } |
1358 | ||
39895c74 JH |
1359 | static struct command **queue_command(struct command **tail, |
1360 | const char *line, | |
1361 | int linelen) | |
1362 | { | |
1363 | unsigned char old_sha1[20], new_sha1[20]; | |
1364 | struct command *cmd; | |
1365 | const char *refname; | |
1366 | int reflen; | |
1367 | ||
1368 | if (linelen < 83 || | |
1369 | line[40] != ' ' || | |
1370 | line[81] != ' ' || | |
1371 | get_sha1_hex(line, old_sha1) || | |
1372 | get_sha1_hex(line + 41, new_sha1)) | |
1373 | die("protocol error: expected old/new/ref, got '%s'", line); | |
1374 | ||
1375 | refname = line + 82; | |
1376 | reflen = linelen - 82; | |
50a6c8ef | 1377 | cmd = xcalloc(1, st_add3(sizeof(struct command), reflen, 1)); |
39895c74 JH |
1378 | hashcpy(cmd->old_sha1, old_sha1); |
1379 | hashcpy(cmd->new_sha1, new_sha1); | |
1380 | memcpy(cmd->ref_name, refname, reflen); | |
1381 | cmd->ref_name[reflen] = '\0'; | |
1382 | *tail = cmd; | |
1383 | return &cmd->next; | |
1384 | } | |
1385 | ||
4adf569d JH |
1386 | static void queue_commands_from_cert(struct command **tail, |
1387 | struct strbuf *push_cert) | |
1388 | { | |
1389 | const char *boc, *eoc; | |
1390 | ||
1391 | if (*tail) | |
1392 | die("protocol error: got both push certificate and unsigned commands"); | |
1393 | ||
1394 | boc = strstr(push_cert->buf, "\n\n"); | |
1395 | if (!boc) | |
1396 | die("malformed push certificate %.*s", 100, push_cert->buf); | |
1397 | else | |
1398 | boc += 2; | |
1399 | eoc = push_cert->buf + parse_signature(push_cert->buf, push_cert->len); | |
1400 | ||
1401 | while (boc < eoc) { | |
1402 | const char *eol = memchr(boc, '\n', eoc - boc); | |
1403 | tail = queue_command(tail, boc, eol ? eol - boc : eoc - eol); | |
1404 | boc = eol ? eol + 1 : eoc; | |
1405 | } | |
1406 | } | |
1407 | ||
5dbd7676 | 1408 | static struct command *read_head_info(struct sha1_array *shallow) |
575f4974 | 1409 | { |
5e1c71fd | 1410 | struct command *commands = NULL; |
eb1af2df | 1411 | struct command **p = &commands; |
575f4974 | 1412 | for (;;) { |
74543a04 | 1413 | char *line; |
39895c74 | 1414 | int len, linelen; |
eb1af2df | 1415 | |
74543a04 JK |
1416 | line = packet_read_line(0, &len); |
1417 | if (!line) | |
575f4974 | 1418 | break; |
5dbd7676 | 1419 | |
92251b1b | 1420 | if (len == 48 && starts_with(line, "shallow ")) { |
c09b71cc JH |
1421 | unsigned char sha1[20]; |
1422 | if (get_sha1_hex(line + 8, sha1)) | |
1423 | die("protocol error: expected shallow sha, got '%s'", | |
1424 | line + 8); | |
1425 | sha1_array_append(shallow, sha1); | |
5dbd7676 NTND |
1426 | continue; |
1427 | } | |
1428 | ||
0e3c339b JH |
1429 | linelen = strlen(line); |
1430 | if (linelen < len) { | |
1431 | const char *feature_list = line + linelen + 1; | |
f47182c8 | 1432 | if (parse_feature_request(feature_list, "report-status")) |
cfee10a7 | 1433 | report_status = 1; |
f47182c8 | 1434 | if (parse_feature_request(feature_list, "side-band-64k")) |
38a81b4e | 1435 | use_sideband = LARGE_PACKET_MAX; |
c207e34f CB |
1436 | if (parse_feature_request(feature_list, "quiet")) |
1437 | quiet = 1; | |
1b70fe5d RS |
1438 | if (advertise_atomic_push |
1439 | && parse_feature_request(feature_list, "atomic")) | |
1440 | use_atomic = 1; | |
cfee10a7 | 1441 | } |
0e3c339b | 1442 | |
a85b377d JH |
1443 | if (!strcmp(line, "push-cert")) { |
1444 | int true_flush = 0; | |
1445 | char certbuf[1024]; | |
1446 | ||
1447 | for (;;) { | |
1448 | len = packet_read(0, NULL, NULL, | |
1449 | certbuf, sizeof(certbuf), 0); | |
1450 | if (!len) { | |
1451 | true_flush = 1; | |
1452 | break; | |
1453 | } | |
1454 | if (!strcmp(certbuf, "push-cert-end\n")) | |
1455 | break; /* end of cert */ | |
1456 | strbuf_addstr(&push_cert, certbuf); | |
1457 | } | |
1458 | ||
1459 | if (true_flush) | |
1460 | break; | |
1461 | continue; | |
1462 | } | |
1463 | ||
39895c74 | 1464 | p = queue_command(p, line, linelen); |
575f4974 | 1465 | } |
4adf569d JH |
1466 | |
1467 | if (push_cert.len) | |
1468 | queue_commands_from_cert(p, &push_cert); | |
1469 | ||
5e1c71fd | 1470 | return commands; |
575f4974 LT |
1471 | } |
1472 | ||
fc04c412 SP |
1473 | static const char *parse_pack_header(struct pack_header *hdr) |
1474 | { | |
a69e5429 JH |
1475 | switch (read_pack_header(0, hdr)) { |
1476 | case PH_ERROR_EOF: | |
1477 | return "eof before pack header was fully read"; | |
1478 | ||
1479 | case PH_ERROR_PACK_SIGNATURE: | |
fc04c412 | 1480 | return "protocol error (pack signature mismatch detected)"; |
a69e5429 JH |
1481 | |
1482 | case PH_ERROR_PROTOCOL: | |
fc04c412 | 1483 | return "protocol error (pack version unsupported)"; |
a69e5429 JH |
1484 | |
1485 | default: | |
1486 | return "unknown error in parse_pack_header"; | |
1487 | ||
1488 | case 0: | |
1489 | return NULL; | |
1490 | } | |
fc04c412 SP |
1491 | } |
1492 | ||
576162a4 NP |
1493 | static const char *pack_lockfile; |
1494 | ||
5dbd7676 | 1495 | static const char *unpack(int err_fd, struct shallow_info *si) |
575f4974 | 1496 | { |
fc04c412 SP |
1497 | struct pack_header hdr; |
1498 | const char *hdr_err; | |
31c42bff | 1499 | int status; |
fc04c412 | 1500 | char hdr_arg[38]; |
d3180279 | 1501 | struct child_process child = CHILD_PROCESS_INIT; |
dab76d3a JH |
1502 | int fsck_objects = (receive_fsck_objects >= 0 |
1503 | ? receive_fsck_objects | |
1504 | : transfer_fsck_objects >= 0 | |
1505 | ? transfer_fsck_objects | |
1506 | : 0); | |
fc04c412 SP |
1507 | |
1508 | hdr_err = parse_pack_header(&hdr); | |
49ecfa13 JK |
1509 | if (hdr_err) { |
1510 | if (err_fd > 0) | |
1511 | close(err_fd); | |
fc04c412 | 1512 | return hdr_err; |
49ecfa13 | 1513 | } |
6e1c2344 RJ |
1514 | snprintf(hdr_arg, sizeof(hdr_arg), |
1515 | "--pack_header=%"PRIu32",%"PRIu32, | |
fc04c412 SP |
1516 | ntohl(hdr.hdr_version), ntohl(hdr.hdr_entries)); |
1517 | ||
5dbd7676 NTND |
1518 | if (si->nr_ours || si->nr_theirs) { |
1519 | alt_shallow_file = setup_temporary_shallow(si->shallow); | |
64a7e92f RS |
1520 | argv_array_push(&child.args, "--shallow-file"); |
1521 | argv_array_push(&child.args, alt_shallow_file); | |
5dbd7676 NTND |
1522 | } |
1523 | ||
fc04c412 | 1524 | if (ntohl(hdr.hdr_entries) < unpack_limit) { |
64a7e92f | 1525 | argv_array_pushl(&child.args, "unpack-objects", hdr_arg, NULL); |
c207e34f | 1526 | if (quiet) |
64a7e92f | 1527 | argv_array_push(&child.args, "-q"); |
dab76d3a | 1528 | if (fsck_objects) |
5d477a33 JS |
1529 | argv_array_pushf(&child.args, "--strict%s", |
1530 | fsck_msg_types.buf); | |
59bfdfb8 | 1531 | child.no_stdout = 1; |
a22e6f85 | 1532 | child.err = err_fd; |
59bfdfb8 | 1533 | child.git_cmd = 1; |
31c42bff NTND |
1534 | status = run_command(&child); |
1535 | if (status) | |
1536 | return "unpack-objects abnormal exit"; | |
576162a4 | 1537 | } else { |
b26cb7c7 | 1538 | char hostname[256]; |
576162a4 | 1539 | |
64a7e92f | 1540 | argv_array_pushl(&child.args, "index-pack", |
b26cb7c7 JK |
1541 | "--stdin", hdr_arg, NULL); |
1542 | ||
1543 | if (gethostname(hostname, sizeof(hostname))) | |
1544 | xsnprintf(hostname, sizeof(hostname), "localhost"); | |
1545 | argv_array_pushf(&child.args, | |
1546 | "--keep=receive-pack %"PRIuMAX" on %s", | |
1547 | (uintmax_t)getpid(), | |
1548 | hostname); | |
1549 | ||
dab76d3a | 1550 | if (fsck_objects) |
5d477a33 JS |
1551 | argv_array_pushf(&child.args, "--strict%s", |
1552 | fsck_msg_types.buf); | |
1b68387e | 1553 | if (!reject_thin) |
64a7e92f | 1554 | argv_array_push(&child.args, "--fix-thin"); |
31c42bff NTND |
1555 | child.out = -1; |
1556 | child.err = err_fd; | |
1557 | child.git_cmd = 1; | |
1558 | status = start_command(&child); | |
1559 | if (status) | |
576162a4 | 1560 | return "index-pack fork failed"; |
31c42bff NTND |
1561 | pack_lockfile = index_pack_lockfile(child.out); |
1562 | close(child.out); | |
1563 | status = finish_command(&child); | |
1564 | if (status) | |
1565 | return "index-pack abnormal exit"; | |
1566 | reprepare_packed_git(); | |
cfee10a7 | 1567 | } |
31c42bff | 1568 | return NULL; |
cfee10a7 JH |
1569 | } |
1570 | ||
5dbd7676 | 1571 | static const char *unpack_with_sideband(struct shallow_info *si) |
a22e6f85 JK |
1572 | { |
1573 | struct async muxer; | |
1574 | const char *ret; | |
1575 | ||
1576 | if (!use_sideband) | |
5dbd7676 | 1577 | return unpack(0, si); |
a22e6f85 JK |
1578 | |
1579 | memset(&muxer, 0, sizeof(muxer)); | |
1580 | muxer.proc = copy_to_sideband; | |
1581 | muxer.in = -1; | |
1582 | if (start_async(&muxer)) | |
1583 | return NULL; | |
1584 | ||
5dbd7676 | 1585 | ret = unpack(muxer.in, si); |
a22e6f85 JK |
1586 | |
1587 | finish_async(&muxer); | |
1588 | return ret; | |
1589 | } | |
1590 | ||
0a1bc12b NTND |
1591 | static void prepare_shallow_update(struct command *commands, |
1592 | struct shallow_info *si) | |
1593 | { | |
1594 | int i, j, k, bitmap_size = (si->ref->nr + 31) / 32; | |
1595 | ||
b32fa95f | 1596 | ALLOC_ARRAY(si->used_shallow, si->shallow->nr); |
0a1bc12b NTND |
1597 | assign_shallow_commits_to_refs(si, si->used_shallow, NULL); |
1598 | ||
1599 | si->need_reachability_test = | |
1600 | xcalloc(si->shallow->nr, sizeof(*si->need_reachability_test)); | |
1601 | si->reachable = | |
1602 | xcalloc(si->shallow->nr, sizeof(*si->reachable)); | |
1603 | si->shallow_ref = xcalloc(si->ref->nr, sizeof(*si->shallow_ref)); | |
1604 | ||
1605 | for (i = 0; i < si->nr_ours; i++) | |
1606 | si->need_reachability_test[si->ours[i]] = 1; | |
1607 | ||
1608 | for (i = 0; i < si->shallow->nr; i++) { | |
1609 | if (!si->used_shallow[i]) | |
1610 | continue; | |
1611 | for (j = 0; j < bitmap_size; j++) { | |
1612 | if (!si->used_shallow[i][j]) | |
1613 | continue; | |
1614 | si->need_reachability_test[i]++; | |
1615 | for (k = 0; k < 32; k++) | |
9a93c668 | 1616 | if (si->used_shallow[i][j] & (1U << k)) |
0a1bc12b NTND |
1617 | si->shallow_ref[j * 32 + k]++; |
1618 | } | |
1619 | ||
1620 | /* | |
1621 | * true for those associated with some refs and belong | |
1622 | * in "ours" list aka "step 7 not done yet" | |
1623 | */ | |
1624 | si->need_reachability_test[i] = | |
1625 | si->need_reachability_test[i] > 1; | |
1626 | } | |
1627 | ||
1628 | /* | |
1629 | * keep hooks happy by forcing a temporary shallow file via | |
1630 | * env variable because we can't add --shallow-file to every | |
1631 | * command. check_everything_connected() will be done with | |
1632 | * true .git/shallow though. | |
1633 | */ | |
1634 | setenv(GIT_SHALLOW_FILE_ENVIRONMENT, alt_shallow_file, 1); | |
1635 | } | |
1636 | ||
5dbd7676 NTND |
1637 | static void update_shallow_info(struct command *commands, |
1638 | struct shallow_info *si, | |
1639 | struct sha1_array *ref) | |
1640 | { | |
1641 | struct command *cmd; | |
1642 | int *ref_status; | |
1643 | remove_nonexistent_theirs_shallow(si); | |
0a1bc12b NTND |
1644 | if (!si->nr_ours && !si->nr_theirs) { |
1645 | shallow_update = 0; | |
5dbd7676 | 1646 | return; |
0a1bc12b | 1647 | } |
5dbd7676 NTND |
1648 | |
1649 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1650 | if (is_null_sha1(cmd->new_sha1)) | |
1651 | continue; | |
1652 | sha1_array_append(ref, cmd->new_sha1); | |
1653 | cmd->index = ref->nr - 1; | |
1654 | } | |
1655 | si->ref = ref; | |
1656 | ||
0a1bc12b NTND |
1657 | if (shallow_update) { |
1658 | prepare_shallow_update(commands, si); | |
1659 | return; | |
1660 | } | |
1661 | ||
b32fa95f | 1662 | ALLOC_ARRAY(ref_status, ref->nr); |
5dbd7676 NTND |
1663 | assign_shallow_commits_to_refs(si, NULL, ref_status); |
1664 | for (cmd = commands; cmd; cmd = cmd->next) { | |
1665 | if (is_null_sha1(cmd->new_sha1)) | |
1666 | continue; | |
1667 | if (ref_status[cmd->index]) { | |
1668 | cmd->error_string = "shallow update not allowed"; | |
1669 | cmd->skip_update = 1; | |
1670 | } | |
1671 | } | |
5dbd7676 NTND |
1672 | free(ref_status); |
1673 | } | |
1674 | ||
5e1c71fd | 1675 | static void report(struct command *commands, const char *unpack_status) |
cfee10a7 JH |
1676 | { |
1677 | struct command *cmd; | |
38a81b4e SP |
1678 | struct strbuf buf = STRBUF_INIT; |
1679 | ||
1680 | packet_buf_write(&buf, "unpack %s\n", | |
1681 | unpack_status ? unpack_status : "ok"); | |
cfee10a7 JH |
1682 | for (cmd = commands; cmd; cmd = cmd->next) { |
1683 | if (!cmd->error_string) | |
38a81b4e SP |
1684 | packet_buf_write(&buf, "ok %s\n", |
1685 | cmd->ref_name); | |
cfee10a7 | 1686 | else |
38a81b4e SP |
1687 | packet_buf_write(&buf, "ng %s %s\n", |
1688 | cmd->ref_name, cmd->error_string); | |
575f4974 | 1689 | } |
38a81b4e SP |
1690 | packet_buf_flush(&buf); |
1691 | ||
1692 | if (use_sideband) | |
1693 | send_sideband(1, 1, buf.buf, buf.len, use_sideband); | |
1694 | else | |
cdf4fb8e | 1695 | write_or_die(1, buf.buf, buf.len); |
38a81b4e | 1696 | strbuf_release(&buf); |
575f4974 LT |
1697 | } |
1698 | ||
5e1c71fd | 1699 | static int delete_only(struct command *commands) |
d4f694ba | 1700 | { |
5e1c71fd JS |
1701 | struct command *cmd; |
1702 | for (cmd = commands; cmd; cmd = cmd->next) { | |
d4f694ba JH |
1703 | if (!is_null_sha1(cmd->new_sha1)) |
1704 | return 0; | |
d4f694ba JH |
1705 | } |
1706 | return 1; | |
1707 | } | |
1708 | ||
be5908ae | 1709 | int cmd_receive_pack(int argc, const char **argv, const char *prefix) |
575f4974 | 1710 | { |
42526b47 | 1711 | int advertise_refs = 0; |
5e1c71fd | 1712 | struct command *commands; |
5dbd7676 NTND |
1713 | struct sha1_array shallow = SHA1_ARRAY_INIT; |
1714 | struct sha1_array ref = SHA1_ARRAY_INIT; | |
1715 | struct shallow_info si; | |
575f4974 | 1716 | |
1b68387e SS |
1717 | struct option options[] = { |
1718 | OPT__QUIET(&quiet, N_("quiet")), | |
1719 | OPT_HIDDEN_BOOL(0, "stateless-rpc", &stateless_rpc, NULL), | |
1720 | OPT_HIDDEN_BOOL(0, "advertise-refs", &advertise_refs, NULL), | |
1721 | OPT_HIDDEN_BOOL(0, "reject-thin-pack-for-testing", &reject_thin, NULL), | |
1722 | OPT_END() | |
1723 | }; | |
bbc30f99 | 1724 | |
1b68387e | 1725 | packet_trace_identity("receive-pack"); |
575f4974 | 1726 | |
1b68387e | 1727 | argc = parse_options(argc, argv, prefix, options, receive_pack_usage, 0); |
c207e34f | 1728 | |
1b68387e SS |
1729 | if (argc > 1) |
1730 | usage_msg_opt(_("Too many arguments."), receive_pack_usage, options); | |
1731 | if (argc == 0) | |
1732 | usage_msg_opt(_("You must specify a directory."), receive_pack_usage, options); | |
42526b47 | 1733 | |
1b68387e | 1734 | service_dir = argv[0]; |
575f4974 | 1735 | |
e1464ca7 | 1736 | setup_path(); |
5c09f321 | 1737 | |
5732373d JH |
1738 | if (!enter_repo(service_dir, 0)) |
1739 | die("'%s' does not appear to be a git repository", service_dir); | |
575f4974 | 1740 | |
ef90d6d4 | 1741 | git_config(receive_pack_config, NULL); |
b89363e4 | 1742 | if (cert_nonce_seed) |
5732373d | 1743 | push_cert_nonce = prepare_push_cert_nonce(service_dir, time(NULL)); |
6fb75bed | 1744 | |
e28714c5 JH |
1745 | if (0 <= transfer_unpack_limit) |
1746 | unpack_limit = transfer_unpack_limit; | |
1747 | else if (0 <= receive_unpack_limit) | |
1748 | unpack_limit = receive_unpack_limit; | |
1749 | ||
42526b47 | 1750 | if (advertise_refs || !stateless_rpc) { |
42526b47 | 1751 | write_head_info(); |
42526b47 SP |
1752 | } |
1753 | if (advertise_refs) | |
1754 | return 0; | |
575f4974 | 1755 | |
5dbd7676 | 1756 | if ((commands = read_head_info(&shallow)) != NULL) { |
d4f694ba JH |
1757 | const char *unpack_status = NULL; |
1758 | ||
5dbd7676 | 1759 | prepare_shallow_info(&si, &shallow); |
0a1bc12b NTND |
1760 | if (!si.nr_ours && !si.nr_theirs) |
1761 | shallow_update = 0; | |
5dbd7676 NTND |
1762 | if (!delete_only(commands)) { |
1763 | unpack_status = unpack_with_sideband(&si); | |
1764 | update_shallow_info(commands, &si, &ref); | |
1765 | } | |
0a1bc12b | 1766 | execute_commands(commands, unpack_status, &si); |
576162a4 | 1767 | if (pack_lockfile) |
691f1a28 | 1768 | unlink_or_warn(pack_lockfile); |
cfee10a7 | 1769 | if (report_status) |
5e1c71fd | 1770 | report(commands, unpack_status); |
5a7da2dc | 1771 | run_receive_hook(commands, "post-receive", 1); |
8e663d9e | 1772 | run_update_post_hook(commands); |
77e3efbf JH |
1773 | if (auto_gc) { |
1774 | const char *argv_gc_auto[] = { | |
1775 | "gc", "--auto", "--quiet", NULL, | |
1776 | }; | |
860a2ebe LF |
1777 | struct child_process proc = CHILD_PROCESS_INIT; |
1778 | ||
1779 | proc.no_stdin = 1; | |
1780 | proc.stdout_to_stderr = 1; | |
1781 | proc.err = use_sideband ? -1 : 0; | |
1782 | proc.git_cmd = 1; | |
1783 | proc.argv = argv_gc_auto; | |
1784 | ||
d5621020 | 1785 | close_all_packs(); |
860a2ebe LF |
1786 | if (!start_command(&proc)) { |
1787 | if (use_sideband) | |
1788 | copy_to_sideband(proc.err, -1, NULL); | |
1789 | finish_command(&proc); | |
1790 | } | |
77e3efbf JH |
1791 | } |
1792 | if (auto_update_server_info) | |
1793 | update_server_info(0); | |
5dbd7676 | 1794 | clear_shallow_info(&si); |
7f8e9828 | 1795 | } |
38a81b4e SP |
1796 | if (use_sideband) |
1797 | packet_flush(1); | |
5dbd7676 NTND |
1798 | sha1_array_clear(&shallow); |
1799 | sha1_array_clear(&ref); | |
b89363e4 | 1800 | free((void *)push_cert_nonce); |
575f4974 LT |
1801 | return 0; |
1802 | } |