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Commit | Line | Data |
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355885d5 | 1 | #include "cache.h" |
cbd53a21 | 2 | #include "object-store.h" |
109cd76d | 3 | #include "repository.h" |
355885d5 MK |
4 | #include "object.h" |
5 | #include "blob.h" | |
6 | #include "tree.h" | |
7 | #include "tree-walk.h" | |
8 | #include "commit.h" | |
9 | #include "tag.h" | |
10 | #include "fsck.h" | |
cec097be | 11 | #include "refs.h" |
a2b26ffb | 12 | #include "url.h" |
a18fcc9f | 13 | #include "utf8.h" |
7b35efd7 | 14 | #include "decorate.h" |
159e7b08 | 15 | #include "oidset.h" |
27387444 | 16 | #include "packfile.h" |
ed8b10f6 JK |
17 | #include "submodule-config.h" |
18 | #include "config.h" | |
07259e74 | 19 | #include "credential.h" |
3ac68a93 | 20 | #include "help.h" |
159e7b08 JK |
21 | |
22 | static struct oidset gitmodules_found = OIDSET_INIT; | |
23 | static struct oidset gitmodules_done = OIDSET_INIT; | |
355885d5 | 24 | |
f417eed8 | 25 | #define STR(x) #x |
a4a9cc19 | 26 | #define MSG_ID(id, msg_type) { STR(id), NULL, NULL, FSCK_##msg_type }, |
c99ba492 | 27 | static struct { |
f417eed8 JS |
28 | const char *id_string; |
29 | const char *downcased; | |
a4a9cc19 | 30 | const char *camelcased; |
1b32b59f | 31 | enum fsck_msg_type msg_type; |
c99ba492 | 32 | } msg_id_info[FSCK_MSG_MAX + 1] = { |
901f2f67 | 33 | FOREACH_FSCK_MSG_ID(MSG_ID) |
a4a9cc19 | 34 | { NULL, NULL, NULL, -1 } |
c99ba492 JS |
35 | }; |
36 | #undef MSG_ID | |
b5495024 | 37 | #undef STR |
c99ba492 | 38 | |
a46baac6 | 39 | static void prepare_msg_ids(void) |
f417eed8 JS |
40 | { |
41 | int i; | |
42 | ||
a46baac6 NTND |
43 | if (msg_id_info[0].downcased) |
44 | return; | |
45 | ||
46 | /* convert id_string to lower case, without underscores. */ | |
47 | for (i = 0; i < FSCK_MSG_MAX; i++) { | |
48 | const char *p = msg_id_info[i].id_string; | |
49 | int len = strlen(p); | |
50 | char *q = xmalloc(len); | |
51 | ||
52 | msg_id_info[i].downcased = q; | |
53 | while (*p) | |
54 | if (*p == '_') | |
55 | p++; | |
56 | else | |
57 | *(q)++ = tolower(*(p)++); | |
58 | *q = '\0'; | |
a4a9cc19 NTND |
59 | |
60 | p = msg_id_info[i].id_string; | |
61 | q = xmalloc(len); | |
62 | msg_id_info[i].camelcased = q; | |
63 | while (*p) { | |
64 | if (*p == '_') { | |
65 | p++; | |
66 | if (*p) | |
67 | *q++ = *p++; | |
68 | } else { | |
69 | *q++ = tolower(*p++); | |
70 | } | |
f417eed8 | 71 | } |
a4a9cc19 | 72 | *q = '\0'; |
f417eed8 | 73 | } |
a46baac6 NTND |
74 | } |
75 | ||
76 | static int parse_msg_id(const char *text) | |
77 | { | |
78 | int i; | |
79 | ||
80 | prepare_msg_ids(); | |
f417eed8 JS |
81 | |
82 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
83 | if (!strcmp(text, msg_id_info[i].downcased)) | |
84 | return i; | |
85 | ||
86 | return -1; | |
87 | } | |
88 | ||
3ac68a93 NTND |
89 | void list_config_fsck_msg_ids(struct string_list *list, const char *prefix) |
90 | { | |
91 | int i; | |
92 | ||
93 | prepare_msg_ids(); | |
94 | ||
3ac68a93 | 95 | for (i = 0; i < FSCK_MSG_MAX; i++) |
a4a9cc19 | 96 | list_config_item(list, prefix, msg_id_info[i].camelcased); |
3ac68a93 NTND |
97 | } |
98 | ||
1b32b59f | 99 | static enum fsck_msg_type fsck_msg_type(enum fsck_msg_id msg_id, |
c99ba492 JS |
100 | struct fsck_options *options) |
101 | { | |
0282f4dc JS |
102 | assert(msg_id >= 0 && msg_id < FSCK_MSG_MAX); |
103 | ||
e35d65a7 | 104 | if (!options->msg_type) { |
1b32b59f | 105 | enum fsck_msg_type msg_type = msg_id_info[msg_id].msg_type; |
e35d65a7 | 106 | |
0282f4dc JS |
107 | if (options->strict && msg_type == FSCK_WARN) |
108 | msg_type = FSCK_ERROR; | |
e35d65a7 | 109 | return msg_type; |
0282f4dc | 110 | } |
c99ba492 | 111 | |
e35d65a7 | 112 | return options->msg_type[msg_id]; |
c99ba492 JS |
113 | } |
114 | ||
1b32b59f | 115 | static enum fsck_msg_type parse_msg_type(const char *str) |
0282f4dc JS |
116 | { |
117 | if (!strcmp(str, "error")) | |
118 | return FSCK_ERROR; | |
119 | else if (!strcmp(str, "warn")) | |
120 | return FSCK_WARN; | |
efaba7cc JS |
121 | else if (!strcmp(str, "ignore")) |
122 | return FSCK_IGNORE; | |
0282f4dc JS |
123 | else |
124 | die("Unknown fsck message type: '%s'", str); | |
125 | } | |
126 | ||
5d477a33 JS |
127 | int is_valid_msg_type(const char *msg_id, const char *msg_type) |
128 | { | |
129 | if (parse_msg_id(msg_id) < 0) | |
130 | return 0; | |
131 | parse_msg_type(msg_type); | |
132 | return 1; | |
133 | } | |
134 | ||
0282f4dc | 135 | void fsck_set_msg_type(struct fsck_options *options, |
f1abc2d0 | 136 | const char *msg_id_str, const char *msg_type_str) |
0282f4dc | 137 | { |
1b32b59f | 138 | int msg_id = parse_msg_id(msg_id_str); |
c72da1a2 | 139 | enum fsck_msg_type msg_type = parse_msg_type(msg_type_str); |
0282f4dc | 140 | |
f1abc2d0 ÆAB |
141 | if (msg_id < 0) |
142 | die("Unhandled message id: %s", msg_id_str); | |
0282f4dc | 143 | |
f1abc2d0 ÆAB |
144 | if (msg_type != FSCK_ERROR && msg_id_info[msg_id].msg_type == FSCK_FATAL) |
145 | die("Cannot demote %s to %s", msg_id_str, msg_type_str); | |
f50c4407 | 146 | |
0282f4dc JS |
147 | if (!options->msg_type) { |
148 | int i; | |
1b32b59f | 149 | enum fsck_msg_type *severity; |
f1abc2d0 | 150 | ALLOC_ARRAY(severity, FSCK_MSG_MAX); |
0282f4dc | 151 | for (i = 0; i < FSCK_MSG_MAX; i++) |
f1abc2d0 ÆAB |
152 | severity[i] = fsck_msg_type(i, options); |
153 | options->msg_type = severity; | |
0282f4dc JS |
154 | } |
155 | ||
f1abc2d0 | 156 | options->msg_type[msg_id] = msg_type; |
0282f4dc JS |
157 | } |
158 | ||
159 | void fsck_set_msg_types(struct fsck_options *options, const char *values) | |
160 | { | |
161 | char *buf = xstrdup(values), *to_free = buf; | |
162 | int done = 0; | |
163 | ||
164 | while (!done) { | |
165 | int len = strcspn(buf, " ,|"), equal; | |
166 | ||
167 | done = !buf[len]; | |
168 | if (!len) { | |
169 | buf++; | |
170 | continue; | |
171 | } | |
172 | buf[len] = '\0'; | |
173 | ||
174 | for (equal = 0; | |
175 | equal < len && buf[equal] != '=' && buf[equal] != ':'; | |
176 | equal++) | |
177 | buf[equal] = tolower(buf[equal]); | |
178 | buf[equal] = '\0'; | |
179 | ||
cd94c6f9 JS |
180 | if (!strcmp(buf, "skiplist")) { |
181 | if (equal == len) | |
182 | die("skiplist requires a path"); | |
24eb33eb | 183 | oidset_parse_file(&options->skiplist, buf + equal + 1); |
cd94c6f9 JS |
184 | buf += len + 1; |
185 | continue; | |
186 | } | |
187 | ||
0282f4dc JS |
188 | if (equal == len) |
189 | die("Missing '=': '%s'", buf); | |
355885d5 | 190 | |
0282f4dc JS |
191 | fsck_set_msg_type(options, buf, buf + equal + 1); |
192 | buf += len + 1; | |
193 | } | |
194 | free(to_free); | |
195 | } | |
196 | ||
f5979376 JK |
197 | static int object_on_skiplist(struct fsck_options *opts, |
198 | const struct object_id *oid) | |
fb162877 | 199 | { |
f5979376 | 200 | return opts && oid && oidset_contains(&opts->skiplist, oid); |
fb162877 RJ |
201 | } |
202 | ||
38370253 JK |
203 | __attribute__((format (printf, 5, 6))) |
204 | static int report(struct fsck_options *options, | |
205 | const struct object_id *oid, enum object_type object_type, | |
35af754b | 206 | enum fsck_msg_id msg_id, const char *fmt, ...) |
c99ba492 JS |
207 | { |
208 | va_list ap; | |
209 | struct strbuf sb = STRBUF_INIT; | |
1b32b59f ÆAB |
210 | enum fsck_msg_type msg_type = fsck_msg_type(msg_id, options); |
211 | int result; | |
c99ba492 | 212 | |
efaba7cc JS |
213 | if (msg_type == FSCK_IGNORE) |
214 | return 0; | |
215 | ||
38370253 | 216 | if (object_on_skiplist(options, oid)) |
cd94c6f9 JS |
217 | return 0; |
218 | ||
f50c4407 JS |
219 | if (msg_type == FSCK_FATAL) |
220 | msg_type = FSCK_ERROR; | |
f27d05b1 JS |
221 | else if (msg_type == FSCK_INFO) |
222 | msg_type = FSCK_WARN; | |
f50c4407 | 223 | |
034a7b7b | 224 | prepare_msg_ids(); |
35af754b | 225 | strbuf_addf(&sb, "%s: ", msg_id_info[msg_id].camelcased); |
71ab8fa8 | 226 | |
c99ba492 JS |
227 | va_start(ap, fmt); |
228 | strbuf_vaddf(&sb, fmt, ap); | |
38370253 | 229 | result = options->error_func(options, oid, object_type, |
5afc4b1d | 230 | msg_type, sb.buf); |
c99ba492 JS |
231 | strbuf_release(&sb); |
232 | va_end(ap); | |
233 | ||
234 | return result; | |
235 | } | |
236 | ||
a59cfb32 JK |
237 | void fsck_enable_object_names(struct fsck_options *options) |
238 | { | |
239 | if (!options->object_names) | |
73390290 | 240 | options->object_names = kh_init_oid_map(); |
a59cfb32 JK |
241 | } |
242 | ||
73390290 JK |
243 | const char *fsck_get_object_name(struct fsck_options *options, |
244 | const struct object_id *oid) | |
7b35efd7 | 245 | { |
73390290 | 246 | khiter_t pos; |
7b35efd7 JS |
247 | if (!options->object_names) |
248 | return NULL; | |
73390290 JK |
249 | pos = kh_get_oid_map(options->object_names, *oid); |
250 | if (pos >= kh_end(options->object_names)) | |
251 | return NULL; | |
252 | return kh_value(options->object_names, pos); | |
7b35efd7 JS |
253 | } |
254 | ||
73390290 JK |
255 | void fsck_put_object_name(struct fsck_options *options, |
256 | const struct object_id *oid, | |
a59cfb32 | 257 | const char *fmt, ...) |
7b35efd7 JS |
258 | { |
259 | va_list ap; | |
260 | struct strbuf buf = STRBUF_INIT; | |
73390290 JK |
261 | khiter_t pos; |
262 | int hashret; | |
7b35efd7 JS |
263 | |
264 | if (!options->object_names) | |
265 | return; | |
73390290 JK |
266 | |
267 | pos = kh_put_oid_map(options->object_names, *oid, &hashret); | |
268 | if (!hashret) | |
7b35efd7 JS |
269 | return; |
270 | va_start(ap, fmt); | |
271 | strbuf_vaddf(&buf, fmt, ap); | |
73390290 | 272 | kh_value(options->object_names, pos) = strbuf_detach(&buf, NULL); |
7b35efd7 JS |
273 | va_end(ap); |
274 | } | |
275 | ||
a59cfb32 | 276 | const char *fsck_describe_object(struct fsck_options *options, |
73390290 | 277 | const struct object_id *oid) |
90cf590f | 278 | { |
a59cfb32 JK |
279 | static struct strbuf bufs[] = { |
280 | STRBUF_INIT, STRBUF_INIT, STRBUF_INIT, STRBUF_INIT | |
281 | }; | |
282 | static int b = 0; | |
283 | struct strbuf *buf; | |
73390290 | 284 | const char *name = fsck_get_object_name(options, oid); |
a59cfb32 JK |
285 | |
286 | buf = bufs + b; | |
287 | b = (b + 1) % ARRAY_SIZE(bufs); | |
288 | strbuf_reset(buf); | |
73390290 | 289 | strbuf_addstr(buf, oid_to_hex(oid)); |
a59cfb32 JK |
290 | if (name) |
291 | strbuf_addf(buf, " (%s)", name); | |
90cf590f | 292 | |
a59cfb32 | 293 | return buf->buf; |
90cf590f JS |
294 | } |
295 | ||
22410549 | 296 | static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *options) |
355885d5 MK |
297 | { |
298 | struct tree_desc desc; | |
299 | struct name_entry entry; | |
300 | int res = 0; | |
7b35efd7 | 301 | const char *name; |
355885d5 MK |
302 | |
303 | if (parse_tree(tree)) | |
304 | return -1; | |
305 | ||
73390290 | 306 | name = fsck_get_object_name(options, &tree->object.oid); |
8354fa3d DT |
307 | if (init_tree_desc_gently(&desc, tree->buffer, tree->size)) |
308 | return -1; | |
309 | while (tree_entry_gently(&desc, &entry)) { | |
7b35efd7 | 310 | struct object *obj; |
355885d5 MK |
311 | int result; |
312 | ||
313 | if (S_ISGITLINK(entry.mode)) | |
314 | continue; | |
7b35efd7 JS |
315 | |
316 | if (S_ISDIR(entry.mode)) { | |
ea82b2a0 | 317 | obj = (struct object *)lookup_tree(the_repository, &entry.oid); |
2720f6db | 318 | if (name && obj) |
73390290 | 319 | fsck_put_object_name(options, &entry.oid, "%s%s/", |
a59cfb32 | 320 | name, entry.path); |
7b35efd7 JS |
321 | result = options->walk(obj, OBJ_TREE, data, options); |
322 | } | |
323 | else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) { | |
ea82b2a0 | 324 | obj = (struct object *)lookup_blob(the_repository, &entry.oid); |
2720f6db | 325 | if (name && obj) |
73390290 | 326 | fsck_put_object_name(options, &entry.oid, "%s%s", |
a59cfb32 | 327 | name, entry.path); |
7b35efd7 JS |
328 | result = options->walk(obj, OBJ_BLOB, data, options); |
329 | } | |
355885d5 | 330 | else { |
82247e9b | 331 | result = error("in tree %s: entry %s has bad mode %.6o", |
73390290 | 332 | fsck_describe_object(options, &tree->object.oid), |
a59cfb32 | 333 | entry.path, entry.mode); |
355885d5 MK |
334 | } |
335 | if (result < 0) | |
336 | return result; | |
337 | if (!res) | |
338 | res = result; | |
339 | } | |
340 | return res; | |
341 | } | |
342 | ||
22410549 | 343 | static int fsck_walk_commit(struct commit *commit, void *data, struct fsck_options *options) |
355885d5 | 344 | { |
7b35efd7 | 345 | int counter = 0, generation = 0, name_prefix_len = 0; |
355885d5 MK |
346 | struct commit_list *parents; |
347 | int res; | |
348 | int result; | |
7b35efd7 | 349 | const char *name; |
355885d5 MK |
350 | |
351 | if (parse_commit(commit)) | |
352 | return -1; | |
353 | ||
73390290 | 354 | name = fsck_get_object_name(options, &commit->object.oid); |
7b35efd7 | 355 | if (name) |
73390290 | 356 | fsck_put_object_name(options, get_commit_tree_oid(commit), |
a59cfb32 | 357 | "%s:", name); |
7b35efd7 | 358 | |
2e27bd77 DS |
359 | result = options->walk((struct object *)get_commit_tree(commit), |
360 | OBJ_TREE, data, options); | |
355885d5 MK |
361 | if (result < 0) |
362 | return result; | |
363 | res = result; | |
364 | ||
365 | parents = commit->parents; | |
7b35efd7 JS |
366 | if (name && parents) { |
367 | int len = strlen(name), power; | |
368 | ||
369 | if (len && name[len - 1] == '^') { | |
370 | generation = 1; | |
371 | name_prefix_len = len - 1; | |
372 | } | |
373 | else { /* parse ~<generation> suffix */ | |
374 | for (generation = 0, power = 1; | |
375 | len && isdigit(name[len - 1]); | |
376 | power *= 10) | |
377 | generation += power * (name[--len] - '0'); | |
378 | if (power > 1 && len && name[len - 1] == '~') | |
379 | name_prefix_len = len - 1; | |
e89f8936 JS |
380 | else { |
381 | /* Maybe a non-first parent, e.g. HEAD^2 */ | |
382 | generation = 0; | |
383 | name_prefix_len = len; | |
384 | } | |
7b35efd7 JS |
385 | } |
386 | } | |
387 | ||
355885d5 | 388 | while (parents) { |
7b35efd7 | 389 | if (name) { |
73390290 | 390 | struct object_id *oid = &parents->item->object.oid; |
7b35efd7 | 391 | |
b84c7838 | 392 | if (counter++) |
73390290 | 393 | fsck_put_object_name(options, oid, "%s^%d", |
a59cfb32 | 394 | name, counter); |
7b35efd7 | 395 | else if (generation > 0) |
73390290 | 396 | fsck_put_object_name(options, oid, "%.*s~%d", |
a59cfb32 JK |
397 | name_prefix_len, name, |
398 | generation + 1); | |
7b35efd7 | 399 | else |
73390290 | 400 | fsck_put_object_name(options, oid, "%s^", name); |
7b35efd7 | 401 | } |
22410549 | 402 | result = options->walk((struct object *)parents->item, OBJ_COMMIT, data, options); |
355885d5 MK |
403 | if (result < 0) |
404 | return result; | |
405 | if (!res) | |
406 | res = result; | |
407 | parents = parents->next; | |
408 | } | |
409 | return res; | |
410 | } | |
411 | ||
22410549 | 412 | static int fsck_walk_tag(struct tag *tag, void *data, struct fsck_options *options) |
355885d5 | 413 | { |
73390290 | 414 | const char *name = fsck_get_object_name(options, &tag->object.oid); |
7b35efd7 | 415 | |
355885d5 MK |
416 | if (parse_tag(tag)) |
417 | return -1; | |
7b35efd7 | 418 | if (name) |
73390290 | 419 | fsck_put_object_name(options, &tag->tagged->oid, "%s", name); |
22410549 | 420 | return options->walk(tag->tagged, OBJ_ANY, data, options); |
355885d5 MK |
421 | } |
422 | ||
22410549 | 423 | int fsck_walk(struct object *obj, void *data, struct fsck_options *options) |
355885d5 MK |
424 | { |
425 | if (!obj) | |
426 | return -1; | |
a2b22854 JK |
427 | |
428 | if (obj->type == OBJ_NONE) | |
109cd76d | 429 | parse_object(the_repository, &obj->oid); |
a2b22854 | 430 | |
355885d5 MK |
431 | switch (obj->type) { |
432 | case OBJ_BLOB: | |
433 | return 0; | |
434 | case OBJ_TREE: | |
22410549 | 435 | return fsck_walk_tree((struct tree *)obj, data, options); |
355885d5 | 436 | case OBJ_COMMIT: |
22410549 | 437 | return fsck_walk_commit((struct commit *)obj, data, options); |
355885d5 | 438 | case OBJ_TAG: |
22410549 | 439 | return fsck_walk_tag((struct tag *)obj, data, options); |
355885d5 | 440 | default: |
a59cfb32 | 441 | error("Unknown object type for %s", |
73390290 | 442 | fsck_describe_object(options, &obj->oid)); |
355885d5 MK |
443 | return -1; |
444 | } | |
445 | } | |
ba002f3b | 446 | |
9068cfb2 RS |
447 | struct name_stack { |
448 | const char **names; | |
449 | size_t nr, alloc; | |
450 | }; | |
451 | ||
452 | static void name_stack_push(struct name_stack *stack, const char *name) | |
453 | { | |
454 | ALLOC_GROW(stack->names, stack->nr + 1, stack->alloc); | |
455 | stack->names[stack->nr++] = name; | |
456 | } | |
457 | ||
458 | static const char *name_stack_pop(struct name_stack *stack) | |
459 | { | |
460 | return stack->nr ? stack->names[--stack->nr] : NULL; | |
461 | } | |
462 | ||
463 | static void name_stack_clear(struct name_stack *stack) | |
464 | { | |
465 | FREE_AND_NULL(stack->names); | |
466 | stack->nr = stack->alloc = 0; | |
467 | } | |
468 | ||
ba002f3b MK |
469 | /* |
470 | * The entries in a tree are ordered in the _path_ order, | |
471 | * which means that a directory entry is ordered by adding | |
472 | * a slash to the end of it. | |
473 | * | |
474 | * So a directory called "a" is ordered _after_ a file | |
475 | * called "a.c", because "a/" sorts after "a.c". | |
476 | */ | |
477 | #define TREE_UNORDERED (-1) | |
478 | #define TREE_HAS_DUPS (-2) | |
479 | ||
9068cfb2 RS |
480 | static int is_less_than_slash(unsigned char c) |
481 | { | |
482 | return '\0' < c && c < '/'; | |
483 | } | |
484 | ||
485 | static int verify_ordered(unsigned mode1, const char *name1, | |
486 | unsigned mode2, const char *name2, | |
487 | struct name_stack *candidates) | |
ba002f3b MK |
488 | { |
489 | int len1 = strlen(name1); | |
490 | int len2 = strlen(name2); | |
491 | int len = len1 < len2 ? len1 : len2; | |
492 | unsigned char c1, c2; | |
493 | int cmp; | |
494 | ||
495 | cmp = memcmp(name1, name2, len); | |
496 | if (cmp < 0) | |
497 | return 0; | |
498 | if (cmp > 0) | |
499 | return TREE_UNORDERED; | |
500 | ||
501 | /* | |
502 | * Ok, the first <len> characters are the same. | |
503 | * Now we need to order the next one, but turn | |
504 | * a '\0' into a '/' for a directory entry. | |
505 | */ | |
506 | c1 = name1[len]; | |
507 | c2 = name2[len]; | |
508 | if (!c1 && !c2) | |
509 | /* | |
510 | * git-write-tree used to write out a nonsense tree that has | |
511 | * entries with the same name, one blob and one tree. Make | |
512 | * sure we do not have duplicate entries. | |
513 | */ | |
514 | return TREE_HAS_DUPS; | |
515 | if (!c1 && S_ISDIR(mode1)) | |
516 | c1 = '/'; | |
517 | if (!c2 && S_ISDIR(mode2)) | |
518 | c2 = '/'; | |
9068cfb2 RS |
519 | |
520 | /* | |
521 | * There can be non-consecutive duplicates due to the implicitly | |
86715592 | 522 | * added slash, e.g.: |
9068cfb2 RS |
523 | * |
524 | * foo | |
525 | * foo.bar | |
526 | * foo.bar.baz | |
527 | * foo.bar/ | |
528 | * foo/ | |
529 | * | |
530 | * Record non-directory candidates (like "foo" and "foo.bar" in | |
531 | * the example) on a stack and check directory candidates (like | |
532 | * foo/" and "foo.bar/") against that stack. | |
533 | */ | |
534 | if (!c1 && is_less_than_slash(c2)) { | |
535 | name_stack_push(candidates, name1); | |
536 | } else if (c2 == '/' && is_less_than_slash(c1)) { | |
537 | for (;;) { | |
538 | const char *p; | |
539 | const char *f_name = name_stack_pop(candidates); | |
540 | ||
541 | if (!f_name) | |
542 | break; | |
543 | if (!skip_prefix(name2, f_name, &p)) | |
fe747043 | 544 | continue; |
9068cfb2 RS |
545 | if (!*p) |
546 | return TREE_HAS_DUPS; | |
547 | if (is_less_than_slash(*p)) { | |
548 | name_stack_push(candidates, f_name); | |
549 | break; | |
550 | } | |
551 | } | |
552 | } | |
553 | ||
ba002f3b MK |
554 | return c1 < c2 ? 0 : TREE_UNORDERED; |
555 | } | |
556 | ||
b2f2039c | 557 | static int fsck_tree(const struct object_id *oid, |
23a173a7 JK |
558 | const char *buffer, unsigned long size, |
559 | struct fsck_options *options) | |
ba002f3b | 560 | { |
8354fa3d | 561 | int retval = 0; |
c479d14a | 562 | int has_null_sha1 = 0; |
ba002f3b MK |
563 | int has_full_path = 0; |
564 | int has_empty_name = 0; | |
5d34a435 JK |
565 | int has_dot = 0; |
566 | int has_dotdot = 0; | |
5c17f512 | 567 | int has_dotgit = 0; |
ba002f3b MK |
568 | int has_zero_pad = 0; |
569 | int has_bad_modes = 0; | |
570 | int has_dup_entries = 0; | |
571 | int not_properly_sorted = 0; | |
572 | struct tree_desc desc; | |
573 | unsigned o_mode; | |
574 | const char *o_name; | |
9068cfb2 | 575 | struct name_stack df_dup_candidates = { NULL }; |
ba002f3b | 576 | |
23a173a7 | 577 | if (init_tree_desc_gently(&desc, buffer, size)) { |
b2f2039c | 578 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_BAD_TREE, "cannot be parsed as a tree"); |
8354fa3d DT |
579 | return retval; |
580 | } | |
ba002f3b MK |
581 | |
582 | o_mode = 0; | |
583 | o_name = NULL; | |
ba002f3b MK |
584 | |
585 | while (desc.size) { | |
5ec1e728 | 586 | unsigned short mode; |
288a74bc | 587 | const char *name, *backslash; |
ce6663a9 | 588 | const struct object_id *oid; |
ba002f3b | 589 | |
ce6663a9 | 590 | oid = tree_entry_extract(&desc, &name, &mode); |
ba002f3b | 591 | |
ce6663a9 | 592 | has_null_sha1 |= is_null_oid(oid); |
effd12ec HS |
593 | has_full_path |= !!strchr(name, '/'); |
594 | has_empty_name |= !*name; | |
595 | has_dot |= !strcmp(name, "."); | |
596 | has_dotdot |= !strcmp(name, ".."); | |
ed9c3220 | 597 | has_dotgit |= is_hfs_dotgit(name) || is_ntfs_dotgit(name); |
ba002f3b | 598 | has_zero_pad |= *(char *)desc.buffer == '0'; |
159e7b08 | 599 | |
b7b1fca1 JK |
600 | if (is_hfs_dotgitmodules(name) || is_ntfs_dotgitmodules(name)) { |
601 | if (!S_ISLNK(mode)) | |
602 | oidset_insert(&gitmodules_found, oid); | |
603 | else | |
38370253 | 604 | retval += report(options, |
b2f2039c | 605 | oid, OBJ_TREE, |
b7b1fca1 JK |
606 | FSCK_MSG_GITMODULES_SYMLINK, |
607 | ".gitmodules is a symbolic link"); | |
608 | } | |
159e7b08 | 609 | |
288a74bc JS |
610 | if ((backslash = strchr(name, '\\'))) { |
611 | while (backslash) { | |
612 | backslash++; | |
613 | has_dotgit |= is_ntfs_dotgit(backslash); | |
bdfef049 JS |
614 | if (is_ntfs_dotgitmodules(backslash)) { |
615 | if (!S_ISLNK(mode)) | |
616 | oidset_insert(&gitmodules_found, oid); | |
617 | else | |
7034cd09 | 618 | retval += report(options, oid, OBJ_TREE, |
bdfef049 JS |
619 | FSCK_MSG_GITMODULES_SYMLINK, |
620 | ".gitmodules is a symbolic link"); | |
621 | } | |
288a74bc JS |
622 | backslash = strchr(backslash, '\\'); |
623 | } | |
624 | } | |
625 | ||
8354fa3d | 626 | if (update_tree_entry_gently(&desc)) { |
b2f2039c | 627 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_BAD_TREE, "cannot be parsed as a tree"); |
8354fa3d DT |
628 | break; |
629 | } | |
ba002f3b MK |
630 | |
631 | switch (mode) { | |
632 | /* | |
633 | * Standard modes.. | |
634 | */ | |
635 | case S_IFREG | 0755: | |
636 | case S_IFREG | 0644: | |
637 | case S_IFLNK: | |
638 | case S_IFDIR: | |
639 | case S_IFGITLINK: | |
640 | break; | |
641 | /* | |
642 | * This is nonstandard, but we had a few of these | |
643 | * early on when we honored the full set of mode | |
644 | * bits.. | |
645 | */ | |
646 | case S_IFREG | 0664: | |
22410549 | 647 | if (!options->strict) |
ba002f3b | 648 | break; |
1cf01a34 | 649 | /* fallthrough */ |
ba002f3b MK |
650 | default: |
651 | has_bad_modes = 1; | |
652 | } | |
653 | ||
654 | if (o_name) { | |
9068cfb2 RS |
655 | switch (verify_ordered(o_mode, o_name, mode, name, |
656 | &df_dup_candidates)) { | |
ba002f3b MK |
657 | case TREE_UNORDERED: |
658 | not_properly_sorted = 1; | |
659 | break; | |
660 | case TREE_HAS_DUPS: | |
661 | has_dup_entries = 1; | |
662 | break; | |
663 | default: | |
664 | break; | |
665 | } | |
666 | } | |
667 | ||
668 | o_mode = mode; | |
669 | o_name = name; | |
ba002f3b MK |
670 | } |
671 | ||
9068cfb2 RS |
672 | name_stack_clear(&df_dup_candidates); |
673 | ||
c479d14a | 674 | if (has_null_sha1) |
b2f2039c | 675 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_NULL_SHA1, "contains entries pointing to null sha1"); |
ba002f3b | 676 | if (has_full_path) |
b2f2039c | 677 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_FULL_PATHNAME, "contains full pathnames"); |
ba002f3b | 678 | if (has_empty_name) |
b2f2039c | 679 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_EMPTY_NAME, "contains empty pathname"); |
5d34a435 | 680 | if (has_dot) |
b2f2039c | 681 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_HAS_DOT, "contains '.'"); |
5d34a435 | 682 | if (has_dotdot) |
b2f2039c | 683 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_HAS_DOTDOT, "contains '..'"); |
5c17f512 | 684 | if (has_dotgit) |
b2f2039c | 685 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_HAS_DOTGIT, "contains '.git'"); |
ba002f3b | 686 | if (has_zero_pad) |
b2f2039c | 687 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_ZERO_PADDED_FILEMODE, "contains zero-padded file modes"); |
ba002f3b | 688 | if (has_bad_modes) |
b2f2039c | 689 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_BAD_FILEMODE, "contains bad file modes"); |
ba002f3b | 690 | if (has_dup_entries) |
b2f2039c | 691 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_DUPLICATE_ENTRIES, "contains duplicate file entries"); |
ba002f3b | 692 | if (not_properly_sorted) |
b2f2039c | 693 | retval += report(options, oid, OBJ_TREE, FSCK_MSG_TREE_NOT_SORTED, "not properly sorted"); |
ba002f3b MK |
694 | return retval; |
695 | } | |
696 | ||
84d18c0b | 697 | static int verify_headers(const void *data, unsigned long size, |
cc579000 JK |
698 | const struct object_id *oid, enum object_type type, |
699 | struct fsck_options *options) | |
4d0d8975 JS |
700 | { |
701 | const char *buffer = (const char *)data; | |
702 | unsigned long i; | |
703 | ||
704 | for (i = 0; i < size; i++) { | |
705 | switch (buffer[i]) { | |
706 | case '\0': | |
cc579000 | 707 | return report(options, oid, type, |
c99ba492 JS |
708 | FSCK_MSG_NUL_IN_HEADER, |
709 | "unterminated header: NUL at offset %ld", i); | |
4d0d8975 JS |
710 | case '\n': |
711 | if (i + 1 < size && buffer[i + 1] == '\n') | |
712 | return 0; | |
713 | } | |
714 | } | |
715 | ||
84d18c0b JH |
716 | /* |
717 | * We did not find double-LF that separates the header | |
718 | * and the body. Not having a body is not a crime but | |
719 | * we do want to see the terminating LF for the last header | |
720 | * line. | |
721 | */ | |
722 | if (size && buffer[size - 1] == '\n') | |
723 | return 0; | |
724 | ||
cc579000 | 725 | return report(options, oid, type, |
c99ba492 | 726 | FSCK_MSG_UNTERMINATED_HEADER, "unterminated header"); |
4d0d8975 JS |
727 | } |
728 | ||
78543993 JK |
729 | static int fsck_ident(const char **ident, |
730 | const struct object_id *oid, enum object_type type, | |
731 | struct fsck_options *options) | |
daae1922 | 732 | { |
e6826e33 | 733 | const char *p = *ident; |
d4b8de04 JK |
734 | char *end; |
735 | ||
e6826e33 JS |
736 | *ident = strchrnul(*ident, '\n'); |
737 | if (**ident == '\n') | |
738 | (*ident)++; | |
739 | ||
740 | if (*p == '<') | |
78543993 | 741 | return report(options, oid, type, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
742 | p += strcspn(p, "<>\n"); |
743 | if (*p == '>') | |
78543993 | 744 | return report(options, oid, type, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name"); |
e6826e33 | 745 | if (*p != '<') |
78543993 | 746 | return report(options, oid, type, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email"); |
e6826e33 | 747 | if (p[-1] != ' ') |
78543993 | 748 | return report(options, oid, type, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
749 | p++; |
750 | p += strcspn(p, "<>\n"); | |
751 | if (*p != '>') | |
78543993 | 752 | return report(options, oid, type, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email"); |
e6826e33 JS |
753 | p++; |
754 | if (*p != ' ') | |
78543993 | 755 | return report(options, oid, type, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date"); |
e6826e33 JS |
756 | p++; |
757 | if (*p == '0' && p[1] != ' ') | |
78543993 | 758 | return report(options, oid, type, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date"); |
1aeb7e75 | 759 | if (date_overflows(parse_timestamp(p, &end, 10))) |
78543993 | 760 | return report(options, oid, type, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow"); |
e6826e33 | 761 | if ((end == p || *end != ' ')) |
78543993 | 762 | return report(options, oid, type, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date"); |
e6826e33 JS |
763 | p = end + 1; |
764 | if ((*p != '+' && *p != '-') || | |
765 | !isdigit(p[1]) || | |
766 | !isdigit(p[2]) || | |
767 | !isdigit(p[3]) || | |
768 | !isdigit(p[4]) || | |
769 | (p[5] != '\n')) | |
78543993 | 770 | return report(options, oid, type, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone"); |
e6826e33 | 771 | p += 6; |
daae1922 JN |
772 | return 0; |
773 | } | |
774 | ||
c5b4269b JK |
775 | static int fsck_commit(const struct object_id *oid, |
776 | const char *buffer, unsigned long size, | |
777 | struct fsck_options *options) | |
ba002f3b | 778 | { |
f648ee70 | 779 | struct object_id tree_oid, parent_oid; |
ec652315 | 780 | unsigned author_count; |
daae1922 | 781 | int err; |
6d2d780f | 782 | const char *buffer_begin = buffer; |
c54f5ca9 | 783 | const char *p; |
ba002f3b | 784 | |
c5b4269b | 785 | if (verify_headers(buffer, size, oid, OBJ_COMMIT, options)) |
4d0d8975 JS |
786 | return -1; |
787 | ||
cf4fff57 | 788 | if (!skip_prefix(buffer, "tree ", &buffer)) |
c5b4269b | 789 | return report(options, oid, OBJ_COMMIT, FSCK_MSG_MISSING_TREE, "invalid format - expected 'tree' line"); |
c54f5ca9 | 790 | if (parse_oid_hex(buffer, &tree_oid, &p) || *p != '\n') { |
c5b4269b | 791 | err = report(options, oid, OBJ_COMMIT, FSCK_MSG_BAD_TREE_SHA1, "invalid 'tree' line format - bad sha1"); |
b3584761 JS |
792 | if (err) |
793 | return err; | |
794 | } | |
c54f5ca9 | 795 | buffer = p + 1; |
cf4fff57 | 796 | while (skip_prefix(buffer, "parent ", &buffer)) { |
f648ee70 | 797 | if (parse_oid_hex(buffer, &parent_oid, &p) || *p != '\n') { |
c5b4269b | 798 | err = report(options, oid, OBJ_COMMIT, FSCK_MSG_BAD_PARENT_SHA1, "invalid 'parent' line format - bad sha1"); |
b3584761 JS |
799 | if (err) |
800 | return err; | |
801 | } | |
c54f5ca9 | 802 | buffer = p + 1; |
ba002f3b | 803 | } |
c9ad147f JS |
804 | author_count = 0; |
805 | while (skip_prefix(buffer, "author ", &buffer)) { | |
806 | author_count++; | |
c5b4269b | 807 | err = fsck_ident(&buffer, oid, OBJ_COMMIT, options); |
c9ad147f JS |
808 | if (err) |
809 | return err; | |
ba002f3b | 810 | } |
c9ad147f | 811 | if (author_count < 1) |
c5b4269b | 812 | err = report(options, oid, OBJ_COMMIT, FSCK_MSG_MISSING_AUTHOR, "invalid format - expected 'author' line"); |
c9ad147f | 813 | else if (author_count > 1) |
c5b4269b | 814 | err = report(options, oid, OBJ_COMMIT, FSCK_MSG_MULTIPLE_AUTHORS, "invalid format - multiple 'author' lines"); |
daae1922 JN |
815 | if (err) |
816 | return err; | |
cf4fff57 | 817 | if (!skip_prefix(buffer, "committer ", &buffer)) |
c5b4269b JK |
818 | return report(options, oid, OBJ_COMMIT, FSCK_MSG_MISSING_COMMITTER, "invalid format - expected 'committer' line"); |
819 | err = fsck_ident(&buffer, oid, OBJ_COMMIT, options); | |
daae1922 JN |
820 | if (err) |
821 | return err; | |
6d2d780f | 822 | if (memchr(buffer_begin, '\0', size)) { |
c5b4269b | 823 | err = report(options, oid, OBJ_COMMIT, FSCK_MSG_NUL_IN_COMMIT, |
6d2d780f JH |
824 | "NUL byte in the commit object body"); |
825 | if (err) | |
826 | return err; | |
827 | } | |
ba002f3b MK |
828 | return 0; |
829 | } | |
830 | ||
103fb6d4 | 831 | static int fsck_tag(const struct object_id *oid, const char *buffer, |
2175a0c6 | 832 | unsigned long size, struct fsck_options *options) |
cec097be | 833 | { |
f648ee70 | 834 | struct object_id tagged_oid; |
acf9de4c ÆAB |
835 | int tagged_type; |
836 | return fsck_tag_standalone(oid, buffer, size, options, &tagged_oid, | |
837 | &tagged_type); | |
838 | } | |
839 | ||
840 | int fsck_tag_standalone(const struct object_id *oid, const char *buffer, | |
841 | unsigned long size, struct fsck_options *options, | |
842 | struct object_id *tagged_oid, | |
843 | int *tagged_type) | |
844 | { | |
cec097be | 845 | int ret = 0; |
23a173a7 | 846 | char *eol; |
cec097be | 847 | struct strbuf sb = STRBUF_INIT; |
c54f5ca9 | 848 | const char *p; |
cec097be | 849 | |
103fb6d4 | 850 | ret = verify_headers(buffer, size, oid, OBJ_TAG, options); |
8a272f29 | 851 | if (ret) |
cec097be JS |
852 | goto done; |
853 | ||
854 | if (!skip_prefix(buffer, "object ", &buffer)) { | |
103fb6d4 | 855 | ret = report(options, oid, OBJ_TAG, FSCK_MSG_MISSING_OBJECT, "invalid format - expected 'object' line"); |
cec097be JS |
856 | goto done; |
857 | } | |
acf9de4c | 858 | if (parse_oid_hex(buffer, tagged_oid, &p) || *p != '\n') { |
103fb6d4 | 859 | ret = report(options, oid, OBJ_TAG, FSCK_MSG_BAD_OBJECT_SHA1, "invalid 'object' line format - bad sha1"); |
7d7d5b05 JS |
860 | if (ret) |
861 | goto done; | |
cec097be | 862 | } |
c54f5ca9 | 863 | buffer = p + 1; |
cec097be JS |
864 | |
865 | if (!skip_prefix(buffer, "type ", &buffer)) { | |
103fb6d4 | 866 | ret = report(options, oid, OBJ_TAG, FSCK_MSG_MISSING_TYPE_ENTRY, "invalid format - expected 'type' line"); |
cec097be JS |
867 | goto done; |
868 | } | |
869 | eol = strchr(buffer, '\n'); | |
870 | if (!eol) { | |
103fb6d4 | 871 | ret = report(options, oid, OBJ_TAG, FSCK_MSG_MISSING_TYPE, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
872 | goto done; |
873 | } | |
acf9de4c ÆAB |
874 | *tagged_type = type_from_string_gently(buffer, eol - buffer, 1); |
875 | if (*tagged_type < 0) | |
103fb6d4 | 876 | ret = report(options, oid, OBJ_TAG, FSCK_MSG_BAD_TYPE, "invalid 'type' value"); |
cec097be JS |
877 | if (ret) |
878 | goto done; | |
879 | buffer = eol + 1; | |
880 | ||
881 | if (!skip_prefix(buffer, "tag ", &buffer)) { | |
103fb6d4 | 882 | ret = report(options, oid, OBJ_TAG, FSCK_MSG_MISSING_TAG_ENTRY, "invalid format - expected 'tag' line"); |
cec097be JS |
883 | goto done; |
884 | } | |
885 | eol = strchr(buffer, '\n'); | |
886 | if (!eol) { | |
103fb6d4 | 887 | ret = report(options, oid, OBJ_TAG, FSCK_MSG_MISSING_TAG, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
888 | goto done; |
889 | } | |
890 | strbuf_addf(&sb, "refs/tags/%.*s", (int)(eol - buffer), buffer); | |
f27d05b1 | 891 | if (check_refname_format(sb.buf, 0)) { |
103fb6d4 | 892 | ret = report(options, oid, OBJ_TAG, |
38370253 JK |
893 | FSCK_MSG_BAD_TAG_NAME, |
894 | "invalid 'tag' name: %.*s", | |
895 | (int)(eol - buffer), buffer); | |
f27d05b1 JS |
896 | if (ret) |
897 | goto done; | |
898 | } | |
cec097be JS |
899 | buffer = eol + 1; |
900 | ||
f27d05b1 | 901 | if (!skip_prefix(buffer, "tagger ", &buffer)) { |
cec097be | 902 | /* early tags do not contain 'tagger' lines; warn only */ |
103fb6d4 | 903 | ret = report(options, oid, OBJ_TAG, FSCK_MSG_MISSING_TAGGER_ENTRY, "invalid format - expected 'tagger' line"); |
f27d05b1 JS |
904 | if (ret) |
905 | goto done; | |
906 | } | |
cec097be | 907 | else |
103fb6d4 | 908 | ret = fsck_ident(&buffer, oid, OBJ_TAG, options); |
9a1a3a4d ÆAB |
909 | if (!*buffer) |
910 | goto done; | |
cec097be | 911 | |
acf9de4c ÆAB |
912 | if (!starts_with(buffer, "\n")) { |
913 | /* | |
914 | * The verify_headers() check will allow | |
915 | * e.g. "[...]tagger <tagger>\nsome | |
916 | * garbage\n\nmessage" to pass, thinking "some | |
917 | * garbage" could be a custom header. E.g. "mktag" | |
918 | * doesn't want any unknown headers. | |
919 | */ | |
920 | ret = report(options, oid, OBJ_TAG, FSCK_MSG_EXTRA_HEADER_ENTRY, "invalid format - extra header(s) after 'tagger'"); | |
921 | if (ret) | |
922 | goto done; | |
923 | } | |
924 | ||
cec097be JS |
925 | done: |
926 | strbuf_release(&sb); | |
cec097be JS |
927 | return ret; |
928 | } | |
929 | ||
a2b26ffb JN |
930 | /* |
931 | * Like builtin/submodule--helper.c's starts_with_dot_slash, but without | |
932 | * relying on the platform-dependent is_dir_sep helper. | |
933 | * | |
934 | * This is for use in checking whether a submodule URL is interpreted as | |
935 | * relative to the current directory on any platform, since \ is a | |
936 | * directory separator on Windows but not on other platforms. | |
937 | */ | |
938 | static int starts_with_dot_slash(const char *str) | |
939 | { | |
940 | return str[0] == '.' && (str[1] == '/' || str[1] == '\\'); | |
941 | } | |
942 | ||
943 | /* | |
944 | * Like starts_with_dot_slash, this is a variant of submodule--helper's | |
945 | * helper of the same name with the twist that it accepts backslash as a | |
946 | * directory separator even on non-Windows platforms. | |
947 | */ | |
948 | static int starts_with_dot_dot_slash(const char *str) | |
949 | { | |
950 | return str[0] == '.' && starts_with_dot_slash(str + 1); | |
951 | } | |
952 | ||
953 | static int submodule_url_is_relative(const char *url) | |
954 | { | |
955 | return starts_with_dot_slash(url) || starts_with_dot_dot_slash(url); | |
956 | } | |
957 | ||
c44088ec JN |
958 | /* |
959 | * Count directory components that a relative submodule URL should chop | |
960 | * from the remote_url it is to be resolved against. | |
961 | * | |
962 | * In other words, this counts "../" components at the start of a | |
963 | * submodule URL. | |
964 | * | |
965 | * Returns the number of directory components to chop and writes a | |
966 | * pointer to the next character of url after all leading "./" and | |
967 | * "../" components to out. | |
968 | */ | |
969 | static int count_leading_dotdots(const char *url, const char **out) | |
970 | { | |
971 | int result = 0; | |
972 | while (1) { | |
973 | if (starts_with_dot_dot_slash(url)) { | |
974 | result++; | |
975 | url += strlen("../"); | |
976 | continue; | |
977 | } | |
978 | if (starts_with_dot_slash(url)) { | |
979 | url += strlen("./"); | |
980 | continue; | |
981 | } | |
982 | *out = url; | |
983 | return result; | |
984 | } | |
985 | } | |
a2b26ffb JN |
986 | /* |
987 | * Check whether a transport is implemented by git-remote-curl. | |
988 | * | |
989 | * If it is, returns 1 and writes the URL that would be passed to | |
990 | * git-remote-curl to the "out" parameter. | |
991 | * | |
992 | * Otherwise, returns 0 and leaves "out" untouched. | |
993 | * | |
994 | * Examples: | |
995 | * http::https://example.com/repo.git -> 1, https://example.com/repo.git | |
996 | * https://example.com/repo.git -> 1, https://example.com/repo.git | |
997 | * git://example.com/repo.git -> 0 | |
998 | * | |
999 | * This is for use in checking for previously exploitable bugs that | |
1000 | * required a submodule URL to be passed to git-remote-curl. | |
1001 | */ | |
1002 | static int url_to_curl_url(const char *url, const char **out) | |
1003 | { | |
1004 | /* | |
1005 | * We don't need to check for case-aliases, "http.exe", and so | |
1006 | * on because in the default configuration, is_transport_allowed | |
1007 | * prevents URLs with those schemes from being cloned | |
1008 | * automatically. | |
1009 | */ | |
1010 | if (skip_prefix(url, "http::", out) || | |
1011 | skip_prefix(url, "https::", out) || | |
1012 | skip_prefix(url, "ftp::", out) || | |
1013 | skip_prefix(url, "ftps::", out)) | |
1014 | return 1; | |
1015 | if (starts_with(url, "http://") || | |
1016 | starts_with(url, "https://") || | |
1017 | starts_with(url, "ftp://") || | |
1018 | starts_with(url, "ftps://")) { | |
1019 | *out = url; | |
1020 | return 1; | |
1021 | } | |
1022 | return 0; | |
1023 | } | |
1024 | ||
07259e74 JK |
1025 | static int check_submodule_url(const char *url) |
1026 | { | |
a2b26ffb | 1027 | const char *curl_url; |
07259e74 JK |
1028 | |
1029 | if (looks_like_command_line_option(url)) | |
1030 | return -1; | |
1031 | ||
6aed5673 | 1032 | if (submodule_url_is_relative(url) || starts_with(url, "git://")) { |
c44088ec JN |
1033 | char *decoded; |
1034 | const char *next; | |
1035 | int has_nl; | |
1036 | ||
a2b26ffb JN |
1037 | /* |
1038 | * This could be appended to an http URL and url-decoded; | |
1039 | * check for malicious characters. | |
1040 | */ | |
c44088ec JN |
1041 | decoded = url_decode(url); |
1042 | has_nl = !!strchr(decoded, '\n'); | |
1043 | ||
a2b26ffb JN |
1044 | free(decoded); |
1045 | if (has_nl) | |
1046 | return -1; | |
c44088ec JN |
1047 | |
1048 | /* | |
1049 | * URLs which escape their root via "../" can overwrite | |
1050 | * the host field and previous components, resolving to | |
1a3609e4 JN |
1051 | * URLs like https::example.com/submodule.git and |
1052 | * https:///example.com/submodule.git that were | |
c44088ec JN |
1053 | * susceptible to CVE-2020-11008. |
1054 | */ | |
1055 | if (count_leading_dotdots(url, &next) > 0 && | |
1a3609e4 | 1056 | (*next == ':' || *next == '/')) |
c44088ec | 1057 | return -1; |
a2b26ffb JN |
1058 | } |
1059 | ||
1060 | else if (url_to_curl_url(url, &curl_url)) { | |
1061 | struct credential c = CREDENTIAL_INIT; | |
1a3609e4 JN |
1062 | int ret = 0; |
1063 | if (credential_from_url_gently(&c, curl_url, 1) || | |
1064 | !*c.host) | |
1065 | ret = -1; | |
a2b26ffb JN |
1066 | credential_clear(&c); |
1067 | return ret; | |
1068 | } | |
1069 | ||
1070 | return 0; | |
07259e74 JK |
1071 | } |
1072 | ||
ed8b10f6 | 1073 | struct fsck_gitmodules_data { |
6da40b22 | 1074 | const struct object_id *oid; |
ed8b10f6 JK |
1075 | struct fsck_options *options; |
1076 | int ret; | |
1077 | }; | |
1078 | ||
1079 | static int fsck_gitmodules_fn(const char *var, const char *value, void *vdata) | |
1080 | { | |
1081 | struct fsck_gitmodules_data *data = vdata; | |
1082 | const char *subsection, *key; | |
f5914f4b | 1083 | size_t subsection_len; |
ed8b10f6 JK |
1084 | char *name; |
1085 | ||
1086 | if (parse_config_key(var, "submodule", &subsection, &subsection_len, &key) < 0 || | |
1087 | !subsection) | |
1088 | return 0; | |
1089 | ||
1090 | name = xmemdupz(subsection, subsection_len); | |
1091 | if (check_submodule_name(name) < 0) | |
38370253 | 1092 | data->ret |= report(data->options, |
6da40b22 | 1093 | data->oid, OBJ_BLOB, |
ed8b10f6 JK |
1094 | FSCK_MSG_GITMODULES_NAME, |
1095 | "disallowed submodule name: %s", | |
1096 | name); | |
a124133e | 1097 | if (!strcmp(key, "url") && value && |
07259e74 | 1098 | check_submodule_url(value) < 0) |
38370253 | 1099 | data->ret |= report(data->options, |
6da40b22 | 1100 | data->oid, OBJ_BLOB, |
a124133e JK |
1101 | FSCK_MSG_GITMODULES_URL, |
1102 | "disallowed submodule url: %s", | |
1103 | value); | |
1a7fd1fb JK |
1104 | if (!strcmp(key, "path") && value && |
1105 | looks_like_command_line_option(value)) | |
38370253 | 1106 | data->ret |= report(data->options, |
6da40b22 | 1107 | data->oid, OBJ_BLOB, |
1a7fd1fb JK |
1108 | FSCK_MSG_GITMODULES_PATH, |
1109 | "disallowed submodule path: %s", | |
1110 | value); | |
bb92255e JN |
1111 | if (!strcmp(key, "update") && value && |
1112 | parse_submodule_update_type(value) == SM_UPDATE_COMMAND) | |
7034cd09 | 1113 | data->ret |= report(data->options, data->oid, OBJ_BLOB, |
bb92255e JN |
1114 | FSCK_MSG_GITMODULES_UPDATE, |
1115 | "disallowed submodule update setting: %s", | |
1116 | value); | |
ed8b10f6 JK |
1117 | free(name); |
1118 | ||
1119 | return 0; | |
1120 | } | |
1121 | ||
6da40b22 | 1122 | static int fsck_blob(const struct object_id *oid, const char *buf, |
7ac4f3a0 JK |
1123 | unsigned long size, struct fsck_options *options) |
1124 | { | |
ed8b10f6 | 1125 | struct fsck_gitmodules_data data; |
de6bd9e3 | 1126 | struct config_options config_opts = { 0 }; |
ed8b10f6 | 1127 | |
6da40b22 | 1128 | if (!oidset_contains(&gitmodules_found, oid)) |
ed8b10f6 | 1129 | return 0; |
6da40b22 | 1130 | oidset_insert(&gitmodules_done, oid); |
ed8b10f6 | 1131 | |
6da40b22 | 1132 | if (object_on_skiplist(options, oid)) |
fb162877 RJ |
1133 | return 0; |
1134 | ||
ed8b10f6 JK |
1135 | if (!buf) { |
1136 | /* | |
1137 | * A missing buffer here is a sign that the caller found the | |
1138 | * blob too gigantic to load into memory. Let's just consider | |
1139 | * that an error. | |
1140 | */ | |
6da40b22 | 1141 | return report(options, oid, OBJ_BLOB, |
0d68764d | 1142 | FSCK_MSG_GITMODULES_LARGE, |
ed8b10f6 JK |
1143 | ".gitmodules too large to parse"); |
1144 | } | |
1145 | ||
6da40b22 | 1146 | data.oid = oid; |
ed8b10f6 JK |
1147 | data.options = options; |
1148 | data.ret = 0; | |
de6bd9e3 | 1149 | config_opts.error_action = CONFIG_ERROR_SILENT; |
ed8b10f6 | 1150 | if (git_config_from_mem(fsck_gitmodules_fn, CONFIG_ORIGIN_BLOB, |
de6bd9e3 | 1151 | ".gitmodules", buf, size, &data, &config_opts)) |
6da40b22 | 1152 | data.ret |= report(options, oid, OBJ_BLOB, |
ed8b10f6 JK |
1153 | FSCK_MSG_GITMODULES_PARSE, |
1154 | "could not parse gitmodules blob"); | |
1155 | ||
1156 | return data.ret; | |
7ac4f3a0 JK |
1157 | } |
1158 | ||
90a398bb | 1159 | int fsck_object(struct object *obj, void *data, unsigned long size, |
22410549 | 1160 | struct fsck_options *options) |
ba002f3b MK |
1161 | { |
1162 | if (!obj) | |
38370253 | 1163 | return report(options, NULL, OBJ_NONE, FSCK_MSG_BAD_OBJECT_SHA1, "no valid object to fsck"); |
ba002f3b MK |
1164 | |
1165 | if (obj->type == OBJ_BLOB) | |
6da40b22 | 1166 | return fsck_blob(&obj->oid, data, size, options); |
ba002f3b | 1167 | if (obj->type == OBJ_TREE) |
b2f2039c | 1168 | return fsck_tree(&obj->oid, data, size, options); |
ba002f3b | 1169 | if (obj->type == OBJ_COMMIT) |
c5b4269b | 1170 | return fsck_commit(&obj->oid, data, size, options); |
ba002f3b | 1171 | if (obj->type == OBJ_TAG) |
103fb6d4 | 1172 | return fsck_tag(&obj->oid, data, size, options); |
ba002f3b | 1173 | |
38370253 JK |
1174 | return report(options, &obj->oid, obj->type, |
1175 | FSCK_MSG_UNKNOWN_TYPE, | |
1176 | "unknown type '%d' (internal fsck error)", | |
1177 | obj->type); | |
ba002f3b | 1178 | } |
d6ffc8d7 | 1179 | |
1cd772cc | 1180 | int fsck_error_function(struct fsck_options *o, |
5afc4b1d JK |
1181 | const struct object_id *oid, |
1182 | enum object_type object_type, | |
1b32b59f | 1183 | enum fsck_msg_type msg_type, const char *message) |
d6ffc8d7 | 1184 | { |
0282f4dc | 1185 | if (msg_type == FSCK_WARN) { |
5afc4b1d | 1186 | warning("object %s: %s", fsck_describe_object(o, oid), message); |
0282f4dc JS |
1187 | return 0; |
1188 | } | |
5afc4b1d | 1189 | error("object %s: %s", fsck_describe_object(o, oid), message); |
d6ffc8d7 MK |
1190 | return 1; |
1191 | } | |
159e7b08 | 1192 | |
5476e1ef JT |
1193 | void register_found_gitmodules(const struct object_id *oid) |
1194 | { | |
1195 | oidset_insert(&gitmodules_found, oid); | |
1196 | } | |
1197 | ||
159e7b08 JK |
1198 | int fsck_finish(struct fsck_options *options) |
1199 | { | |
1200 | int ret = 0; | |
1201 | struct oidset_iter iter; | |
1202 | const struct object_id *oid; | |
1203 | ||
1204 | oidset_iter_init(&gitmodules_found, &iter); | |
1205 | while ((oid = oidset_iter_next(&iter))) { | |
159e7b08 JK |
1206 | enum object_type type; |
1207 | unsigned long size; | |
1208 | char *buf; | |
1209 | ||
1210 | if (oidset_contains(&gitmodules_done, oid)) | |
1211 | continue; | |
1212 | ||
7913f53b | 1213 | buf = read_object_file(oid, &type, &size); |
159e7b08 | 1214 | if (!buf) { |
b8b00f16 | 1215 | if (is_promisor_object(oid)) |
27387444 | 1216 | continue; |
38370253 | 1217 | ret |= report(options, |
b8b00f16 | 1218 | oid, OBJ_BLOB, |
159e7b08 JK |
1219 | FSCK_MSG_GITMODULES_MISSING, |
1220 | "unable to read .gitmodules blob"); | |
1221 | continue; | |
1222 | } | |
1223 | ||
1224 | if (type == OBJ_BLOB) | |
b8b00f16 | 1225 | ret |= fsck_blob(oid, buf, size, options); |
159e7b08 | 1226 | else |
38370253 | 1227 | ret |= report(options, |
b8b00f16 | 1228 | oid, type, |
159e7b08 JK |
1229 | FSCK_MSG_GITMODULES_BLOB, |
1230 | "non-blob found at .gitmodules"); | |
1231 | free(buf); | |
1232 | } | |
1233 | ||
1234 | ||
1235 | oidset_clear(&gitmodules_found); | |
1236 | oidset_clear(&gitmodules_done); | |
1237 | return ret; | |
1238 | } | |
1f3299fd | 1239 | |
fb79f5bf | 1240 | int git_fsck_config(const char *var, const char *value, void *cb) |
1f3299fd | 1241 | { |
fb79f5bf | 1242 | struct fsck_options *options = cb; |
1f3299fd ÆAB |
1243 | if (strcmp(var, "fsck.skiplist") == 0) { |
1244 | const char *path; | |
1245 | struct strbuf sb = STRBUF_INIT; | |
1246 | ||
1247 | if (git_config_pathname(&path, var, value)) | |
1248 | return 1; | |
1249 | strbuf_addf(&sb, "skiplist=%s", path); | |
1250 | free((char *)path); | |
1251 | fsck_set_msg_types(options, sb.buf); | |
1252 | strbuf_release(&sb); | |
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | if (skip_prefix(var, "fsck.", &var)) { | |
1257 | fsck_set_msg_type(options, var, value); | |
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | return git_default_config(var, value, cb); | |
1262 | } |