]>
Commit | Line | Data |
---|---|---|
1 | #include "cache.h" | |
2 | #include "object-store.h" | |
3 | #include "repository.h" | |
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" | |
11 | #include "refs.h" | |
12 | #include "utf8.h" | |
13 | #include "decorate.h" | |
14 | #include "oidset.h" | |
15 | #include "packfile.h" | |
16 | #include "submodule-config.h" | |
17 | #include "config.h" | |
18 | #include "help.h" | |
19 | ||
20 | static struct oidset gitmodules_found = OIDSET_INIT; | |
21 | static struct oidset gitmodules_done = OIDSET_INIT; | |
22 | ||
23 | #define FSCK_FATAL -1 | |
24 | #define FSCK_INFO -2 | |
25 | ||
26 | #define FOREACH_MSG_ID(FUNC) \ | |
27 | /* fatal errors */ \ | |
28 | FUNC(NUL_IN_HEADER, FATAL) \ | |
29 | FUNC(UNTERMINATED_HEADER, FATAL) \ | |
30 | /* errors */ \ | |
31 | FUNC(BAD_DATE, ERROR) \ | |
32 | FUNC(BAD_DATE_OVERFLOW, ERROR) \ | |
33 | FUNC(BAD_EMAIL, ERROR) \ | |
34 | FUNC(BAD_NAME, ERROR) \ | |
35 | FUNC(BAD_OBJECT_SHA1, ERROR) \ | |
36 | FUNC(BAD_PARENT_SHA1, ERROR) \ | |
37 | FUNC(BAD_TAG_OBJECT, ERROR) \ | |
38 | FUNC(BAD_TIMEZONE, ERROR) \ | |
39 | FUNC(BAD_TREE, ERROR) \ | |
40 | FUNC(BAD_TREE_SHA1, ERROR) \ | |
41 | FUNC(BAD_TYPE, ERROR) \ | |
42 | FUNC(DUPLICATE_ENTRIES, ERROR) \ | |
43 | FUNC(MISSING_AUTHOR, ERROR) \ | |
44 | FUNC(MISSING_COMMITTER, ERROR) \ | |
45 | FUNC(MISSING_EMAIL, ERROR) \ | |
46 | FUNC(MISSING_GRAFT, ERROR) \ | |
47 | FUNC(MISSING_NAME_BEFORE_EMAIL, ERROR) \ | |
48 | FUNC(MISSING_OBJECT, ERROR) \ | |
49 | FUNC(MISSING_PARENT, ERROR) \ | |
50 | FUNC(MISSING_SPACE_BEFORE_DATE, ERROR) \ | |
51 | FUNC(MISSING_SPACE_BEFORE_EMAIL, ERROR) \ | |
52 | FUNC(MISSING_TAG, ERROR) \ | |
53 | FUNC(MISSING_TAG_ENTRY, ERROR) \ | |
54 | FUNC(MISSING_TAG_OBJECT, ERROR) \ | |
55 | FUNC(MISSING_TREE, ERROR) \ | |
56 | FUNC(MISSING_TREE_OBJECT, ERROR) \ | |
57 | FUNC(MISSING_TYPE, ERROR) \ | |
58 | FUNC(MISSING_TYPE_ENTRY, ERROR) \ | |
59 | FUNC(MULTIPLE_AUTHORS, ERROR) \ | |
60 | FUNC(TAG_OBJECT_NOT_TAG, ERROR) \ | |
61 | FUNC(TREE_NOT_SORTED, ERROR) \ | |
62 | FUNC(UNKNOWN_TYPE, ERROR) \ | |
63 | FUNC(ZERO_PADDED_DATE, ERROR) \ | |
64 | FUNC(GITMODULES_MISSING, ERROR) \ | |
65 | FUNC(GITMODULES_BLOB, ERROR) \ | |
66 | FUNC(GITMODULES_LARGE, ERROR) \ | |
67 | FUNC(GITMODULES_NAME, ERROR) \ | |
68 | FUNC(GITMODULES_SYMLINK, ERROR) \ | |
69 | FUNC(GITMODULES_URL, ERROR) \ | |
70 | FUNC(GITMODULES_PATH, ERROR) \ | |
71 | /* warnings */ \ | |
72 | FUNC(BAD_FILEMODE, WARN) \ | |
73 | FUNC(EMPTY_NAME, WARN) \ | |
74 | FUNC(FULL_PATHNAME, WARN) \ | |
75 | FUNC(HAS_DOT, WARN) \ | |
76 | FUNC(HAS_DOTDOT, WARN) \ | |
77 | FUNC(HAS_DOTGIT, WARN) \ | |
78 | FUNC(NULL_SHA1, WARN) \ | |
79 | FUNC(ZERO_PADDED_FILEMODE, WARN) \ | |
80 | FUNC(NUL_IN_COMMIT, WARN) \ | |
81 | /* infos (reported as warnings, but ignored by default) */ \ | |
82 | FUNC(GITMODULES_PARSE, INFO) \ | |
83 | FUNC(BAD_TAG_NAME, INFO) \ | |
84 | FUNC(MISSING_TAGGER_ENTRY, INFO) | |
85 | ||
86 | #define MSG_ID(id, msg_type) FSCK_MSG_##id, | |
87 | enum fsck_msg_id { | |
88 | FOREACH_MSG_ID(MSG_ID) | |
89 | FSCK_MSG_MAX | |
90 | }; | |
91 | #undef MSG_ID | |
92 | ||
93 | #define STR(x) #x | |
94 | #define MSG_ID(id, msg_type) { STR(id), NULL, NULL, FSCK_##msg_type }, | |
95 | static struct { | |
96 | const char *id_string; | |
97 | const char *downcased; | |
98 | const char *camelcased; | |
99 | int msg_type; | |
100 | } msg_id_info[FSCK_MSG_MAX + 1] = { | |
101 | FOREACH_MSG_ID(MSG_ID) | |
102 | { NULL, NULL, NULL, -1 } | |
103 | }; | |
104 | #undef MSG_ID | |
105 | ||
106 | static void prepare_msg_ids(void) | |
107 | { | |
108 | int i; | |
109 | ||
110 | if (msg_id_info[0].downcased) | |
111 | return; | |
112 | ||
113 | /* convert id_string to lower case, without underscores. */ | |
114 | for (i = 0; i < FSCK_MSG_MAX; i++) { | |
115 | const char *p = msg_id_info[i].id_string; | |
116 | int len = strlen(p); | |
117 | char *q = xmalloc(len); | |
118 | ||
119 | msg_id_info[i].downcased = q; | |
120 | while (*p) | |
121 | if (*p == '_') | |
122 | p++; | |
123 | else | |
124 | *(q)++ = tolower(*(p)++); | |
125 | *q = '\0'; | |
126 | ||
127 | p = msg_id_info[i].id_string; | |
128 | q = xmalloc(len); | |
129 | msg_id_info[i].camelcased = q; | |
130 | while (*p) { | |
131 | if (*p == '_') { | |
132 | p++; | |
133 | if (*p) | |
134 | *q++ = *p++; | |
135 | } else { | |
136 | *q++ = tolower(*p++); | |
137 | } | |
138 | } | |
139 | *q = '\0'; | |
140 | } | |
141 | } | |
142 | ||
143 | static int parse_msg_id(const char *text) | |
144 | { | |
145 | int i; | |
146 | ||
147 | prepare_msg_ids(); | |
148 | ||
149 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
150 | if (!strcmp(text, msg_id_info[i].downcased)) | |
151 | return i; | |
152 | ||
153 | return -1; | |
154 | } | |
155 | ||
156 | void list_config_fsck_msg_ids(struct string_list *list, const char *prefix) | |
157 | { | |
158 | int i; | |
159 | ||
160 | prepare_msg_ids(); | |
161 | ||
162 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
163 | list_config_item(list, prefix, msg_id_info[i].camelcased); | |
164 | } | |
165 | ||
166 | static int fsck_msg_type(enum fsck_msg_id msg_id, | |
167 | struct fsck_options *options) | |
168 | { | |
169 | int msg_type; | |
170 | ||
171 | assert(msg_id >= 0 && msg_id < FSCK_MSG_MAX); | |
172 | ||
173 | if (options->msg_type) | |
174 | msg_type = options->msg_type[msg_id]; | |
175 | else { | |
176 | msg_type = msg_id_info[msg_id].msg_type; | |
177 | if (options->strict && msg_type == FSCK_WARN) | |
178 | msg_type = FSCK_ERROR; | |
179 | } | |
180 | ||
181 | return msg_type; | |
182 | } | |
183 | ||
184 | static int parse_msg_type(const char *str) | |
185 | { | |
186 | if (!strcmp(str, "error")) | |
187 | return FSCK_ERROR; | |
188 | else if (!strcmp(str, "warn")) | |
189 | return FSCK_WARN; | |
190 | else if (!strcmp(str, "ignore")) | |
191 | return FSCK_IGNORE; | |
192 | else | |
193 | die("Unknown fsck message type: '%s'", str); | |
194 | } | |
195 | ||
196 | int is_valid_msg_type(const char *msg_id, const char *msg_type) | |
197 | { | |
198 | if (parse_msg_id(msg_id) < 0) | |
199 | return 0; | |
200 | parse_msg_type(msg_type); | |
201 | return 1; | |
202 | } | |
203 | ||
204 | void fsck_set_msg_type(struct fsck_options *options, | |
205 | const char *msg_id, const char *msg_type) | |
206 | { | |
207 | int id = parse_msg_id(msg_id), type; | |
208 | ||
209 | if (id < 0) | |
210 | die("Unhandled message id: %s", msg_id); | |
211 | type = parse_msg_type(msg_type); | |
212 | ||
213 | if (type != FSCK_ERROR && msg_id_info[id].msg_type == FSCK_FATAL) | |
214 | die("Cannot demote %s to %s", msg_id, msg_type); | |
215 | ||
216 | if (!options->msg_type) { | |
217 | int i; | |
218 | int *msg_type; | |
219 | ALLOC_ARRAY(msg_type, FSCK_MSG_MAX); | |
220 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
221 | msg_type[i] = fsck_msg_type(i, options); | |
222 | options->msg_type = msg_type; | |
223 | } | |
224 | ||
225 | options->msg_type[id] = type; | |
226 | } | |
227 | ||
228 | void fsck_set_msg_types(struct fsck_options *options, const char *values) | |
229 | { | |
230 | char *buf = xstrdup(values), *to_free = buf; | |
231 | int done = 0; | |
232 | ||
233 | while (!done) { | |
234 | int len = strcspn(buf, " ,|"), equal; | |
235 | ||
236 | done = !buf[len]; | |
237 | if (!len) { | |
238 | buf++; | |
239 | continue; | |
240 | } | |
241 | buf[len] = '\0'; | |
242 | ||
243 | for (equal = 0; | |
244 | equal < len && buf[equal] != '=' && buf[equal] != ':'; | |
245 | equal++) | |
246 | buf[equal] = tolower(buf[equal]); | |
247 | buf[equal] = '\0'; | |
248 | ||
249 | if (!strcmp(buf, "skiplist")) { | |
250 | if (equal == len) | |
251 | die("skiplist requires a path"); | |
252 | oidset_parse_file(&options->skiplist, buf + equal + 1); | |
253 | buf += len + 1; | |
254 | continue; | |
255 | } | |
256 | ||
257 | if (equal == len) | |
258 | die("Missing '=': '%s'", buf); | |
259 | ||
260 | fsck_set_msg_type(options, buf, buf + equal + 1); | |
261 | buf += len + 1; | |
262 | } | |
263 | free(to_free); | |
264 | } | |
265 | ||
266 | static void append_msg_id(struct strbuf *sb, const char *msg_id) | |
267 | { | |
268 | for (;;) { | |
269 | char c = *(msg_id)++; | |
270 | ||
271 | if (!c) | |
272 | break; | |
273 | if (c != '_') | |
274 | strbuf_addch(sb, tolower(c)); | |
275 | else { | |
276 | assert(*msg_id); | |
277 | strbuf_addch(sb, *(msg_id)++); | |
278 | } | |
279 | } | |
280 | ||
281 | strbuf_addstr(sb, ": "); | |
282 | } | |
283 | ||
284 | static int object_on_skiplist(struct fsck_options *opts, struct object *obj) | |
285 | { | |
286 | return opts && obj && oidset_contains(&opts->skiplist, &obj->oid); | |
287 | } | |
288 | ||
289 | __attribute__((format (printf, 4, 5))) | |
290 | static int report(struct fsck_options *options, struct object *object, | |
291 | enum fsck_msg_id id, const char *fmt, ...) | |
292 | { | |
293 | va_list ap; | |
294 | struct strbuf sb = STRBUF_INIT; | |
295 | int msg_type = fsck_msg_type(id, options), result; | |
296 | ||
297 | if (msg_type == FSCK_IGNORE) | |
298 | return 0; | |
299 | ||
300 | if (object_on_skiplist(options, object)) | |
301 | return 0; | |
302 | ||
303 | if (msg_type == FSCK_FATAL) | |
304 | msg_type = FSCK_ERROR; | |
305 | else if (msg_type == FSCK_INFO) | |
306 | msg_type = FSCK_WARN; | |
307 | ||
308 | append_msg_id(&sb, msg_id_info[id].id_string); | |
309 | ||
310 | va_start(ap, fmt); | |
311 | strbuf_vaddf(&sb, fmt, ap); | |
312 | result = options->error_func(options, object, msg_type, sb.buf); | |
313 | strbuf_release(&sb); | |
314 | va_end(ap); | |
315 | ||
316 | return result; | |
317 | } | |
318 | ||
319 | static char *get_object_name(struct fsck_options *options, struct object *obj) | |
320 | { | |
321 | if (!options->object_names) | |
322 | return NULL; | |
323 | return lookup_decoration(options->object_names, obj); | |
324 | } | |
325 | ||
326 | static void put_object_name(struct fsck_options *options, struct object *obj, | |
327 | const char *fmt, ...) | |
328 | { | |
329 | va_list ap; | |
330 | struct strbuf buf = STRBUF_INIT; | |
331 | char *existing; | |
332 | ||
333 | if (!options->object_names) | |
334 | return; | |
335 | existing = lookup_decoration(options->object_names, obj); | |
336 | if (existing) | |
337 | return; | |
338 | va_start(ap, fmt); | |
339 | strbuf_vaddf(&buf, fmt, ap); | |
340 | add_decoration(options->object_names, obj, strbuf_detach(&buf, NULL)); | |
341 | va_end(ap); | |
342 | } | |
343 | ||
344 | static const char *describe_object(struct fsck_options *o, struct object *obj) | |
345 | { | |
346 | static struct strbuf buf = STRBUF_INIT; | |
347 | char *name; | |
348 | ||
349 | strbuf_reset(&buf); | |
350 | strbuf_addstr(&buf, oid_to_hex(&obj->oid)); | |
351 | if (o->object_names && (name = lookup_decoration(o->object_names, obj))) | |
352 | strbuf_addf(&buf, " (%s)", name); | |
353 | ||
354 | return buf.buf; | |
355 | } | |
356 | ||
357 | static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *options) | |
358 | { | |
359 | struct tree_desc desc; | |
360 | struct name_entry entry; | |
361 | int res = 0; | |
362 | const char *name; | |
363 | ||
364 | if (parse_tree(tree)) | |
365 | return -1; | |
366 | ||
367 | name = get_object_name(options, &tree->object); | |
368 | if (init_tree_desc_gently(&desc, tree->buffer, tree->size)) | |
369 | return -1; | |
370 | while (tree_entry_gently(&desc, &entry)) { | |
371 | struct object *obj; | |
372 | int result; | |
373 | ||
374 | if (S_ISGITLINK(entry.mode)) | |
375 | continue; | |
376 | ||
377 | if (S_ISDIR(entry.mode)) { | |
378 | obj = (struct object *)lookup_tree(the_repository, &entry.oid); | |
379 | if (name && obj) | |
380 | put_object_name(options, obj, "%s%s/", name, | |
381 | entry.path); | |
382 | result = options->walk(obj, OBJ_TREE, data, options); | |
383 | } | |
384 | else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) { | |
385 | obj = (struct object *)lookup_blob(the_repository, &entry.oid); | |
386 | if (name && obj) | |
387 | put_object_name(options, obj, "%s%s", name, | |
388 | entry.path); | |
389 | result = options->walk(obj, OBJ_BLOB, data, options); | |
390 | } | |
391 | else { | |
392 | result = error("in tree %s: entry %s has bad mode %.6o", | |
393 | describe_object(options, &tree->object), entry.path, entry.mode); | |
394 | } | |
395 | if (result < 0) | |
396 | return result; | |
397 | if (!res) | |
398 | res = result; | |
399 | } | |
400 | return res; | |
401 | } | |
402 | ||
403 | static int fsck_walk_commit(struct commit *commit, void *data, struct fsck_options *options) | |
404 | { | |
405 | int counter = 0, generation = 0, name_prefix_len = 0; | |
406 | struct commit_list *parents; | |
407 | int res; | |
408 | int result; | |
409 | const char *name; | |
410 | ||
411 | if (parse_commit(commit)) | |
412 | return -1; | |
413 | ||
414 | name = get_object_name(options, &commit->object); | |
415 | if (name) | |
416 | put_object_name(options, &get_commit_tree(commit)->object, | |
417 | "%s:", name); | |
418 | ||
419 | result = options->walk((struct object *)get_commit_tree(commit), | |
420 | OBJ_TREE, data, options); | |
421 | if (result < 0) | |
422 | return result; | |
423 | res = result; | |
424 | ||
425 | parents = commit->parents; | |
426 | if (name && parents) { | |
427 | int len = strlen(name), power; | |
428 | ||
429 | if (len && name[len - 1] == '^') { | |
430 | generation = 1; | |
431 | name_prefix_len = len - 1; | |
432 | } | |
433 | else { /* parse ~<generation> suffix */ | |
434 | for (generation = 0, power = 1; | |
435 | len && isdigit(name[len - 1]); | |
436 | power *= 10) | |
437 | generation += power * (name[--len] - '0'); | |
438 | if (power > 1 && len && name[len - 1] == '~') | |
439 | name_prefix_len = len - 1; | |
440 | } | |
441 | } | |
442 | ||
443 | while (parents) { | |
444 | if (name) { | |
445 | struct object *obj = &parents->item->object; | |
446 | ||
447 | if (counter++) | |
448 | put_object_name(options, obj, "%s^%d", | |
449 | name, counter); | |
450 | else if (generation > 0) | |
451 | put_object_name(options, obj, "%.*s~%d", | |
452 | name_prefix_len, name, generation + 1); | |
453 | else | |
454 | put_object_name(options, obj, "%s^", name); | |
455 | } | |
456 | result = options->walk((struct object *)parents->item, OBJ_COMMIT, data, options); | |
457 | if (result < 0) | |
458 | return result; | |
459 | if (!res) | |
460 | res = result; | |
461 | parents = parents->next; | |
462 | } | |
463 | return res; | |
464 | } | |
465 | ||
466 | static int fsck_walk_tag(struct tag *tag, void *data, struct fsck_options *options) | |
467 | { | |
468 | char *name = get_object_name(options, &tag->object); | |
469 | ||
470 | if (parse_tag(tag)) | |
471 | return -1; | |
472 | if (name) | |
473 | put_object_name(options, tag->tagged, "%s", name); | |
474 | return options->walk(tag->tagged, OBJ_ANY, data, options); | |
475 | } | |
476 | ||
477 | int fsck_walk(struct object *obj, void *data, struct fsck_options *options) | |
478 | { | |
479 | if (!obj) | |
480 | return -1; | |
481 | ||
482 | if (obj->type == OBJ_NONE) | |
483 | parse_object(the_repository, &obj->oid); | |
484 | ||
485 | switch (obj->type) { | |
486 | case OBJ_BLOB: | |
487 | return 0; | |
488 | case OBJ_TREE: | |
489 | return fsck_walk_tree((struct tree *)obj, data, options); | |
490 | case OBJ_COMMIT: | |
491 | return fsck_walk_commit((struct commit *)obj, data, options); | |
492 | case OBJ_TAG: | |
493 | return fsck_walk_tag((struct tag *)obj, data, options); | |
494 | default: | |
495 | error("Unknown object type for %s", describe_object(options, obj)); | |
496 | return -1; | |
497 | } | |
498 | } | |
499 | ||
500 | /* | |
501 | * The entries in a tree are ordered in the _path_ order, | |
502 | * which means that a directory entry is ordered by adding | |
503 | * a slash to the end of it. | |
504 | * | |
505 | * So a directory called "a" is ordered _after_ a file | |
506 | * called "a.c", because "a/" sorts after "a.c". | |
507 | */ | |
508 | #define TREE_UNORDERED (-1) | |
509 | #define TREE_HAS_DUPS (-2) | |
510 | ||
511 | static int verify_ordered(unsigned mode1, const char *name1, unsigned mode2, const char *name2) | |
512 | { | |
513 | int len1 = strlen(name1); | |
514 | int len2 = strlen(name2); | |
515 | int len = len1 < len2 ? len1 : len2; | |
516 | unsigned char c1, c2; | |
517 | int cmp; | |
518 | ||
519 | cmp = memcmp(name1, name2, len); | |
520 | if (cmp < 0) | |
521 | return 0; | |
522 | if (cmp > 0) | |
523 | return TREE_UNORDERED; | |
524 | ||
525 | /* | |
526 | * Ok, the first <len> characters are the same. | |
527 | * Now we need to order the next one, but turn | |
528 | * a '\0' into a '/' for a directory entry. | |
529 | */ | |
530 | c1 = name1[len]; | |
531 | c2 = name2[len]; | |
532 | if (!c1 && !c2) | |
533 | /* | |
534 | * git-write-tree used to write out a nonsense tree that has | |
535 | * entries with the same name, one blob and one tree. Make | |
536 | * sure we do not have duplicate entries. | |
537 | */ | |
538 | return TREE_HAS_DUPS; | |
539 | if (!c1 && S_ISDIR(mode1)) | |
540 | c1 = '/'; | |
541 | if (!c2 && S_ISDIR(mode2)) | |
542 | c2 = '/'; | |
543 | return c1 < c2 ? 0 : TREE_UNORDERED; | |
544 | } | |
545 | ||
546 | static int fsck_tree(struct tree *item, struct fsck_options *options) | |
547 | { | |
548 | int retval = 0; | |
549 | int has_null_sha1 = 0; | |
550 | int has_full_path = 0; | |
551 | int has_empty_name = 0; | |
552 | int has_dot = 0; | |
553 | int has_dotdot = 0; | |
554 | int has_dotgit = 0; | |
555 | int has_zero_pad = 0; | |
556 | int has_bad_modes = 0; | |
557 | int has_dup_entries = 0; | |
558 | int not_properly_sorted = 0; | |
559 | struct tree_desc desc; | |
560 | unsigned o_mode; | |
561 | const char *o_name; | |
562 | ||
563 | if (init_tree_desc_gently(&desc, item->buffer, item->size)) { | |
564 | retval += report(options, &item->object, FSCK_MSG_BAD_TREE, "cannot be parsed as a tree"); | |
565 | return retval; | |
566 | } | |
567 | ||
568 | o_mode = 0; | |
569 | o_name = NULL; | |
570 | ||
571 | while (desc.size) { | |
572 | unsigned short mode; | |
573 | const char *name; | |
574 | const struct object_id *oid; | |
575 | ||
576 | oid = tree_entry_extract(&desc, &name, &mode); | |
577 | ||
578 | has_null_sha1 |= is_null_oid(oid); | |
579 | has_full_path |= !!strchr(name, '/'); | |
580 | has_empty_name |= !*name; | |
581 | has_dot |= !strcmp(name, "."); | |
582 | has_dotdot |= !strcmp(name, ".."); | |
583 | has_dotgit |= is_hfs_dotgit(name) || is_ntfs_dotgit(name); | |
584 | has_zero_pad |= *(char *)desc.buffer == '0'; | |
585 | ||
586 | if (is_hfs_dotgitmodules(name) || is_ntfs_dotgitmodules(name)) { | |
587 | if (!S_ISLNK(mode)) | |
588 | oidset_insert(&gitmodules_found, oid); | |
589 | else | |
590 | retval += report(options, &item->object, | |
591 | FSCK_MSG_GITMODULES_SYMLINK, | |
592 | ".gitmodules is a symbolic link"); | |
593 | } | |
594 | ||
595 | if (update_tree_entry_gently(&desc)) { | |
596 | retval += report(options, &item->object, FSCK_MSG_BAD_TREE, "cannot be parsed as a tree"); | |
597 | break; | |
598 | } | |
599 | ||
600 | switch (mode) { | |
601 | /* | |
602 | * Standard modes.. | |
603 | */ | |
604 | case S_IFREG | 0755: | |
605 | case S_IFREG | 0644: | |
606 | case S_IFLNK: | |
607 | case S_IFDIR: | |
608 | case S_IFGITLINK: | |
609 | break; | |
610 | /* | |
611 | * This is nonstandard, but we had a few of these | |
612 | * early on when we honored the full set of mode | |
613 | * bits.. | |
614 | */ | |
615 | case S_IFREG | 0664: | |
616 | if (!options->strict) | |
617 | break; | |
618 | /* fallthrough */ | |
619 | default: | |
620 | has_bad_modes = 1; | |
621 | } | |
622 | ||
623 | if (o_name) { | |
624 | switch (verify_ordered(o_mode, o_name, mode, name)) { | |
625 | case TREE_UNORDERED: | |
626 | not_properly_sorted = 1; | |
627 | break; | |
628 | case TREE_HAS_DUPS: | |
629 | has_dup_entries = 1; | |
630 | break; | |
631 | default: | |
632 | break; | |
633 | } | |
634 | } | |
635 | ||
636 | o_mode = mode; | |
637 | o_name = name; | |
638 | } | |
639 | ||
640 | if (has_null_sha1) | |
641 | retval += report(options, &item->object, FSCK_MSG_NULL_SHA1, "contains entries pointing to null sha1"); | |
642 | if (has_full_path) | |
643 | retval += report(options, &item->object, FSCK_MSG_FULL_PATHNAME, "contains full pathnames"); | |
644 | if (has_empty_name) | |
645 | retval += report(options, &item->object, FSCK_MSG_EMPTY_NAME, "contains empty pathname"); | |
646 | if (has_dot) | |
647 | retval += report(options, &item->object, FSCK_MSG_HAS_DOT, "contains '.'"); | |
648 | if (has_dotdot) | |
649 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTDOT, "contains '..'"); | |
650 | if (has_dotgit) | |
651 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTGIT, "contains '.git'"); | |
652 | if (has_zero_pad) | |
653 | retval += report(options, &item->object, FSCK_MSG_ZERO_PADDED_FILEMODE, "contains zero-padded file modes"); | |
654 | if (has_bad_modes) | |
655 | retval += report(options, &item->object, FSCK_MSG_BAD_FILEMODE, "contains bad file modes"); | |
656 | if (has_dup_entries) | |
657 | retval += report(options, &item->object, FSCK_MSG_DUPLICATE_ENTRIES, "contains duplicate file entries"); | |
658 | if (not_properly_sorted) | |
659 | retval += report(options, &item->object, FSCK_MSG_TREE_NOT_SORTED, "not properly sorted"); | |
660 | return retval; | |
661 | } | |
662 | ||
663 | static int verify_headers(const void *data, unsigned long size, | |
664 | struct object *obj, struct fsck_options *options) | |
665 | { | |
666 | const char *buffer = (const char *)data; | |
667 | unsigned long i; | |
668 | ||
669 | for (i = 0; i < size; i++) { | |
670 | switch (buffer[i]) { | |
671 | case '\0': | |
672 | return report(options, obj, | |
673 | FSCK_MSG_NUL_IN_HEADER, | |
674 | "unterminated header: NUL at offset %ld", i); | |
675 | case '\n': | |
676 | if (i + 1 < size && buffer[i + 1] == '\n') | |
677 | return 0; | |
678 | } | |
679 | } | |
680 | ||
681 | /* | |
682 | * We did not find double-LF that separates the header | |
683 | * and the body. Not having a body is not a crime but | |
684 | * we do want to see the terminating LF for the last header | |
685 | * line. | |
686 | */ | |
687 | if (size && buffer[size - 1] == '\n') | |
688 | return 0; | |
689 | ||
690 | return report(options, obj, | |
691 | FSCK_MSG_UNTERMINATED_HEADER, "unterminated header"); | |
692 | } | |
693 | ||
694 | static int fsck_ident(const char **ident, struct object *obj, struct fsck_options *options) | |
695 | { | |
696 | const char *p = *ident; | |
697 | char *end; | |
698 | ||
699 | *ident = strchrnul(*ident, '\n'); | |
700 | if (**ident == '\n') | |
701 | (*ident)++; | |
702 | ||
703 | if (*p == '<') | |
704 | return report(options, obj, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); | |
705 | p += strcspn(p, "<>\n"); | |
706 | if (*p == '>') | |
707 | return report(options, obj, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name"); | |
708 | if (*p != '<') | |
709 | return report(options, obj, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email"); | |
710 | if (p[-1] != ' ') | |
711 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); | |
712 | p++; | |
713 | p += strcspn(p, "<>\n"); | |
714 | if (*p != '>') | |
715 | return report(options, obj, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email"); | |
716 | p++; | |
717 | if (*p != ' ') | |
718 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date"); | |
719 | p++; | |
720 | if (*p == '0' && p[1] != ' ') | |
721 | return report(options, obj, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date"); | |
722 | if (date_overflows(parse_timestamp(p, &end, 10))) | |
723 | return report(options, obj, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow"); | |
724 | if ((end == p || *end != ' ')) | |
725 | return report(options, obj, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date"); | |
726 | p = end + 1; | |
727 | if ((*p != '+' && *p != '-') || | |
728 | !isdigit(p[1]) || | |
729 | !isdigit(p[2]) || | |
730 | !isdigit(p[3]) || | |
731 | !isdigit(p[4]) || | |
732 | (p[5] != '\n')) | |
733 | return report(options, obj, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone"); | |
734 | p += 6; | |
735 | return 0; | |
736 | } | |
737 | ||
738 | static int fsck_commit_buffer(struct commit *commit, const char *buffer, | |
739 | unsigned long size, struct fsck_options *options) | |
740 | { | |
741 | struct object_id tree_oid, oid; | |
742 | struct commit_graft *graft; | |
743 | unsigned parent_count, parent_line_count = 0, author_count; | |
744 | int err; | |
745 | const char *buffer_begin = buffer; | |
746 | const char *p; | |
747 | ||
748 | if (verify_headers(buffer, size, &commit->object, options)) | |
749 | return -1; | |
750 | ||
751 | if (!skip_prefix(buffer, "tree ", &buffer)) | |
752 | return report(options, &commit->object, FSCK_MSG_MISSING_TREE, "invalid format - expected 'tree' line"); | |
753 | if (parse_oid_hex(buffer, &tree_oid, &p) || *p != '\n') { | |
754 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE_SHA1, "invalid 'tree' line format - bad sha1"); | |
755 | if (err) | |
756 | return err; | |
757 | } | |
758 | buffer = p + 1; | |
759 | while (skip_prefix(buffer, "parent ", &buffer)) { | |
760 | if (parse_oid_hex(buffer, &oid, &p) || *p != '\n') { | |
761 | err = report(options, &commit->object, FSCK_MSG_BAD_PARENT_SHA1, "invalid 'parent' line format - bad sha1"); | |
762 | if (err) | |
763 | return err; | |
764 | } | |
765 | buffer = p + 1; | |
766 | parent_line_count++; | |
767 | } | |
768 | graft = lookup_commit_graft(the_repository, &commit->object.oid); | |
769 | parent_count = commit_list_count(commit->parents); | |
770 | if (graft) { | |
771 | if (graft->nr_parent == -1 && !parent_count) | |
772 | ; /* shallow commit */ | |
773 | else if (graft->nr_parent != parent_count) { | |
774 | err = report(options, &commit->object, FSCK_MSG_MISSING_GRAFT, "graft objects missing"); | |
775 | if (err) | |
776 | return err; | |
777 | } | |
778 | } else { | |
779 | if (parent_count != parent_line_count) { | |
780 | err = report(options, &commit->object, FSCK_MSG_MISSING_PARENT, "parent objects missing"); | |
781 | if (err) | |
782 | return err; | |
783 | } | |
784 | } | |
785 | author_count = 0; | |
786 | while (skip_prefix(buffer, "author ", &buffer)) { | |
787 | author_count++; | |
788 | err = fsck_ident(&buffer, &commit->object, options); | |
789 | if (err) | |
790 | return err; | |
791 | } | |
792 | if (author_count < 1) | |
793 | err = report(options, &commit->object, FSCK_MSG_MISSING_AUTHOR, "invalid format - expected 'author' line"); | |
794 | else if (author_count > 1) | |
795 | err = report(options, &commit->object, FSCK_MSG_MULTIPLE_AUTHORS, "invalid format - multiple 'author' lines"); | |
796 | if (err) | |
797 | return err; | |
798 | if (!skip_prefix(buffer, "committer ", &buffer)) | |
799 | return report(options, &commit->object, FSCK_MSG_MISSING_COMMITTER, "invalid format - expected 'committer' line"); | |
800 | err = fsck_ident(&buffer, &commit->object, options); | |
801 | if (err) | |
802 | return err; | |
803 | if (!get_commit_tree(commit)) { | |
804 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE, "could not load commit's tree %s", oid_to_hex(&tree_oid)); | |
805 | if (err) | |
806 | return err; | |
807 | } | |
808 | if (memchr(buffer_begin, '\0', size)) { | |
809 | err = report(options, &commit->object, FSCK_MSG_NUL_IN_COMMIT, | |
810 | "NUL byte in the commit object body"); | |
811 | if (err) | |
812 | return err; | |
813 | } | |
814 | return 0; | |
815 | } | |
816 | ||
817 | static int fsck_commit(struct commit *commit, const char *data, | |
818 | unsigned long size, struct fsck_options *options) | |
819 | { | |
820 | const char *buffer = data ? data : get_commit_buffer(commit, &size); | |
821 | int ret = fsck_commit_buffer(commit, buffer, size, options); | |
822 | if (!data) | |
823 | unuse_commit_buffer(commit, buffer); | |
824 | return ret; | |
825 | } | |
826 | ||
827 | static int fsck_tag_buffer(struct tag *tag, const char *data, | |
828 | unsigned long size, struct fsck_options *options) | |
829 | { | |
830 | struct object_id oid; | |
831 | int ret = 0; | |
832 | const char *buffer; | |
833 | char *to_free = NULL, *eol; | |
834 | struct strbuf sb = STRBUF_INIT; | |
835 | const char *p; | |
836 | ||
837 | if (data) | |
838 | buffer = data; | |
839 | else { | |
840 | enum object_type type; | |
841 | ||
842 | buffer = to_free = | |
843 | read_object_file(&tag->object.oid, &type, &size); | |
844 | if (!buffer) | |
845 | return report(options, &tag->object, | |
846 | FSCK_MSG_MISSING_TAG_OBJECT, | |
847 | "cannot read tag object"); | |
848 | ||
849 | if (type != OBJ_TAG) { | |
850 | ret = report(options, &tag->object, | |
851 | FSCK_MSG_TAG_OBJECT_NOT_TAG, | |
852 | "expected tag got %s", | |
853 | type_name(type)); | |
854 | goto done; | |
855 | } | |
856 | } | |
857 | ||
858 | ret = verify_headers(buffer, size, &tag->object, options); | |
859 | if (ret) | |
860 | goto done; | |
861 | ||
862 | if (!skip_prefix(buffer, "object ", &buffer)) { | |
863 | ret = report(options, &tag->object, FSCK_MSG_MISSING_OBJECT, "invalid format - expected 'object' line"); | |
864 | goto done; | |
865 | } | |
866 | if (parse_oid_hex(buffer, &oid, &p) || *p != '\n') { | |
867 | ret = report(options, &tag->object, FSCK_MSG_BAD_OBJECT_SHA1, "invalid 'object' line format - bad sha1"); | |
868 | if (ret) | |
869 | goto done; | |
870 | } | |
871 | buffer = p + 1; | |
872 | ||
873 | if (!skip_prefix(buffer, "type ", &buffer)) { | |
874 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE_ENTRY, "invalid format - expected 'type' line"); | |
875 | goto done; | |
876 | } | |
877 | eol = strchr(buffer, '\n'); | |
878 | if (!eol) { | |
879 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE, "invalid format - unexpected end after 'type' line"); | |
880 | goto done; | |
881 | } | |
882 | if (type_from_string_gently(buffer, eol - buffer, 1) < 0) | |
883 | ret = report(options, &tag->object, FSCK_MSG_BAD_TYPE, "invalid 'type' value"); | |
884 | if (ret) | |
885 | goto done; | |
886 | buffer = eol + 1; | |
887 | ||
888 | if (!skip_prefix(buffer, "tag ", &buffer)) { | |
889 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG_ENTRY, "invalid format - expected 'tag' line"); | |
890 | goto done; | |
891 | } | |
892 | eol = strchr(buffer, '\n'); | |
893 | if (!eol) { | |
894 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG, "invalid format - unexpected end after 'type' line"); | |
895 | goto done; | |
896 | } | |
897 | strbuf_addf(&sb, "refs/tags/%.*s", (int)(eol - buffer), buffer); | |
898 | if (check_refname_format(sb.buf, 0)) { | |
899 | ret = report(options, &tag->object, FSCK_MSG_BAD_TAG_NAME, | |
900 | "invalid 'tag' name: %.*s", | |
901 | (int)(eol - buffer), buffer); | |
902 | if (ret) | |
903 | goto done; | |
904 | } | |
905 | buffer = eol + 1; | |
906 | ||
907 | if (!skip_prefix(buffer, "tagger ", &buffer)) { | |
908 | /* early tags do not contain 'tagger' lines; warn only */ | |
909 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAGGER_ENTRY, "invalid format - expected 'tagger' line"); | |
910 | if (ret) | |
911 | goto done; | |
912 | } | |
913 | else | |
914 | ret = fsck_ident(&buffer, &tag->object, options); | |
915 | ||
916 | done: | |
917 | strbuf_release(&sb); | |
918 | free(to_free); | |
919 | return ret; | |
920 | } | |
921 | ||
922 | static int fsck_tag(struct tag *tag, const char *data, | |
923 | unsigned long size, struct fsck_options *options) | |
924 | { | |
925 | struct object *tagged = tag->tagged; | |
926 | ||
927 | if (!tagged) | |
928 | return report(options, &tag->object, FSCK_MSG_BAD_TAG_OBJECT, "could not load tagged object"); | |
929 | ||
930 | return fsck_tag_buffer(tag, data, size, options); | |
931 | } | |
932 | ||
933 | struct fsck_gitmodules_data { | |
934 | struct object *obj; | |
935 | struct fsck_options *options; | |
936 | int ret; | |
937 | }; | |
938 | ||
939 | static int fsck_gitmodules_fn(const char *var, const char *value, void *vdata) | |
940 | { | |
941 | struct fsck_gitmodules_data *data = vdata; | |
942 | const char *subsection, *key; | |
943 | int subsection_len; | |
944 | char *name; | |
945 | ||
946 | if (parse_config_key(var, "submodule", &subsection, &subsection_len, &key) < 0 || | |
947 | !subsection) | |
948 | return 0; | |
949 | ||
950 | name = xmemdupz(subsection, subsection_len); | |
951 | if (check_submodule_name(name) < 0) | |
952 | data->ret |= report(data->options, data->obj, | |
953 | FSCK_MSG_GITMODULES_NAME, | |
954 | "disallowed submodule name: %s", | |
955 | name); | |
956 | if (!strcmp(key, "url") && value && | |
957 | looks_like_command_line_option(value)) | |
958 | data->ret |= report(data->options, data->obj, | |
959 | FSCK_MSG_GITMODULES_URL, | |
960 | "disallowed submodule url: %s", | |
961 | value); | |
962 | if (!strcmp(key, "path") && value && | |
963 | looks_like_command_line_option(value)) | |
964 | data->ret |= report(data->options, data->obj, | |
965 | FSCK_MSG_GITMODULES_PATH, | |
966 | "disallowed submodule path: %s", | |
967 | value); | |
968 | free(name); | |
969 | ||
970 | return 0; | |
971 | } | |
972 | ||
973 | static int fsck_blob(struct blob *blob, const char *buf, | |
974 | unsigned long size, struct fsck_options *options) | |
975 | { | |
976 | struct fsck_gitmodules_data data; | |
977 | struct config_options config_opts = { 0 }; | |
978 | ||
979 | if (!oidset_contains(&gitmodules_found, &blob->object.oid)) | |
980 | return 0; | |
981 | oidset_insert(&gitmodules_done, &blob->object.oid); | |
982 | ||
983 | if (object_on_skiplist(options, &blob->object)) | |
984 | return 0; | |
985 | ||
986 | if (!buf) { | |
987 | /* | |
988 | * A missing buffer here is a sign that the caller found the | |
989 | * blob too gigantic to load into memory. Let's just consider | |
990 | * that an error. | |
991 | */ | |
992 | return report(options, &blob->object, | |
993 | FSCK_MSG_GITMODULES_LARGE, | |
994 | ".gitmodules too large to parse"); | |
995 | } | |
996 | ||
997 | data.obj = &blob->object; | |
998 | data.options = options; | |
999 | data.ret = 0; | |
1000 | config_opts.error_action = CONFIG_ERROR_SILENT; | |
1001 | if (git_config_from_mem(fsck_gitmodules_fn, CONFIG_ORIGIN_BLOB, | |
1002 | ".gitmodules", buf, size, &data, &config_opts)) | |
1003 | data.ret |= report(options, &blob->object, | |
1004 | FSCK_MSG_GITMODULES_PARSE, | |
1005 | "could not parse gitmodules blob"); | |
1006 | ||
1007 | return data.ret; | |
1008 | } | |
1009 | ||
1010 | int fsck_object(struct object *obj, void *data, unsigned long size, | |
1011 | struct fsck_options *options) | |
1012 | { | |
1013 | if (!obj) | |
1014 | return report(options, obj, FSCK_MSG_BAD_OBJECT_SHA1, "no valid object to fsck"); | |
1015 | ||
1016 | if (obj->type == OBJ_BLOB) | |
1017 | return fsck_blob((struct blob *)obj, data, size, options); | |
1018 | if (obj->type == OBJ_TREE) | |
1019 | return fsck_tree((struct tree *) obj, options); | |
1020 | if (obj->type == OBJ_COMMIT) | |
1021 | return fsck_commit((struct commit *) obj, (const char *) data, | |
1022 | size, options); | |
1023 | if (obj->type == OBJ_TAG) | |
1024 | return fsck_tag((struct tag *) obj, (const char *) data, | |
1025 | size, options); | |
1026 | ||
1027 | return report(options, obj, FSCK_MSG_UNKNOWN_TYPE, "unknown type '%d' (internal fsck error)", | |
1028 | obj->type); | |
1029 | } | |
1030 | ||
1031 | int fsck_error_function(struct fsck_options *o, | |
1032 | struct object *obj, int msg_type, const char *message) | |
1033 | { | |
1034 | if (msg_type == FSCK_WARN) { | |
1035 | warning("object %s: %s", describe_object(o, obj), message); | |
1036 | return 0; | |
1037 | } | |
1038 | error("object %s: %s", describe_object(o, obj), message); | |
1039 | return 1; | |
1040 | } | |
1041 | ||
1042 | int fsck_finish(struct fsck_options *options) | |
1043 | { | |
1044 | int ret = 0; | |
1045 | struct oidset_iter iter; | |
1046 | const struct object_id *oid; | |
1047 | ||
1048 | oidset_iter_init(&gitmodules_found, &iter); | |
1049 | while ((oid = oidset_iter_next(&iter))) { | |
1050 | struct blob *blob; | |
1051 | enum object_type type; | |
1052 | unsigned long size; | |
1053 | char *buf; | |
1054 | ||
1055 | if (oidset_contains(&gitmodules_done, oid)) | |
1056 | continue; | |
1057 | ||
1058 | blob = lookup_blob(the_repository, oid); | |
1059 | if (!blob) { | |
1060 | struct object *obj = lookup_unknown_object(oid); | |
1061 | ret |= report(options, obj, | |
1062 | FSCK_MSG_GITMODULES_BLOB, | |
1063 | "non-blob found at .gitmodules"); | |
1064 | continue; | |
1065 | } | |
1066 | ||
1067 | buf = read_object_file(oid, &type, &size); | |
1068 | if (!buf) { | |
1069 | if (is_promisor_object(&blob->object.oid)) | |
1070 | continue; | |
1071 | ret |= report(options, &blob->object, | |
1072 | FSCK_MSG_GITMODULES_MISSING, | |
1073 | "unable to read .gitmodules blob"); | |
1074 | continue; | |
1075 | } | |
1076 | ||
1077 | if (type == OBJ_BLOB) | |
1078 | ret |= fsck_blob(blob, buf, size, options); | |
1079 | else | |
1080 | ret |= report(options, &blob->object, | |
1081 | FSCK_MSG_GITMODULES_BLOB, | |
1082 | "non-blob found at .gitmodules"); | |
1083 | free(buf); | |
1084 | } | |
1085 | ||
1086 | ||
1087 | oidset_clear(&gitmodules_found); | |
1088 | oidset_clear(&gitmodules_done); | |
1089 | return ret; | |
1090 | } |