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Commit | Line | Data |
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355885d5 MK |
1 | #include "cache.h" |
2 | #include "object.h" | |
3 | #include "blob.h" | |
4 | #include "tree.h" | |
5 | #include "tree-walk.h" | |
6 | #include "commit.h" | |
7 | #include "tag.h" | |
8 | #include "fsck.h" | |
cec097be | 9 | #include "refs.h" |
a18fcc9f | 10 | #include "utf8.h" |
cd94c6f9 | 11 | #include "sha1-array.h" |
7b35efd7 | 12 | #include "decorate.h" |
355885d5 | 13 | |
f50c4407 | 14 | #define FSCK_FATAL -1 |
f27d05b1 | 15 | #define FSCK_INFO -2 |
f50c4407 | 16 | |
c99ba492 | 17 | #define FOREACH_MSG_ID(FUNC) \ |
f50c4407 JS |
18 | /* fatal errors */ \ |
19 | FUNC(NUL_IN_HEADER, FATAL) \ | |
20 | FUNC(UNTERMINATED_HEADER, FATAL) \ | |
c99ba492 JS |
21 | /* errors */ \ |
22 | FUNC(BAD_DATE, ERROR) \ | |
23 | FUNC(BAD_DATE_OVERFLOW, ERROR) \ | |
24 | FUNC(BAD_EMAIL, ERROR) \ | |
25 | FUNC(BAD_NAME, ERROR) \ | |
26 | FUNC(BAD_OBJECT_SHA1, ERROR) \ | |
27 | FUNC(BAD_PARENT_SHA1, ERROR) \ | |
28 | FUNC(BAD_TAG_OBJECT, ERROR) \ | |
29 | FUNC(BAD_TIMEZONE, ERROR) \ | |
30 | FUNC(BAD_TREE, ERROR) \ | |
31 | FUNC(BAD_TREE_SHA1, ERROR) \ | |
32 | FUNC(BAD_TYPE, ERROR) \ | |
33 | FUNC(DUPLICATE_ENTRIES, ERROR) \ | |
34 | FUNC(MISSING_AUTHOR, ERROR) \ | |
35 | FUNC(MISSING_COMMITTER, ERROR) \ | |
36 | FUNC(MISSING_EMAIL, ERROR) \ | |
37 | FUNC(MISSING_GRAFT, ERROR) \ | |
38 | FUNC(MISSING_NAME_BEFORE_EMAIL, ERROR) \ | |
39 | FUNC(MISSING_OBJECT, ERROR) \ | |
40 | FUNC(MISSING_PARENT, ERROR) \ | |
41 | FUNC(MISSING_SPACE_BEFORE_DATE, ERROR) \ | |
42 | FUNC(MISSING_SPACE_BEFORE_EMAIL, ERROR) \ | |
43 | FUNC(MISSING_TAG, ERROR) \ | |
44 | FUNC(MISSING_TAG_ENTRY, ERROR) \ | |
45 | FUNC(MISSING_TAG_OBJECT, ERROR) \ | |
46 | FUNC(MISSING_TREE, ERROR) \ | |
47 | FUNC(MISSING_TYPE, ERROR) \ | |
48 | FUNC(MISSING_TYPE_ENTRY, ERROR) \ | |
c9ad147f | 49 | FUNC(MULTIPLE_AUTHORS, ERROR) \ |
c99ba492 JS |
50 | FUNC(TAG_OBJECT_NOT_TAG, ERROR) \ |
51 | FUNC(TREE_NOT_SORTED, ERROR) \ | |
52 | FUNC(UNKNOWN_TYPE, ERROR) \ | |
c99ba492 JS |
53 | FUNC(ZERO_PADDED_DATE, ERROR) \ |
54 | /* warnings */ \ | |
55 | FUNC(BAD_FILEMODE, WARN) \ | |
c99ba492 JS |
56 | FUNC(EMPTY_NAME, WARN) \ |
57 | FUNC(FULL_PATHNAME, WARN) \ | |
58 | FUNC(HAS_DOT, WARN) \ | |
59 | FUNC(HAS_DOTDOT, WARN) \ | |
60 | FUNC(HAS_DOTGIT, WARN) \ | |
c99ba492 | 61 | FUNC(NULL_SHA1, WARN) \ |
f27d05b1 | 62 | FUNC(ZERO_PADDED_FILEMODE, WARN) \ |
6d2d780f | 63 | FUNC(NUL_IN_COMMIT, WARN) \ |
f27d05b1 JS |
64 | /* infos (reported as warnings, but ignored by default) */ \ |
65 | FUNC(BAD_TAG_NAME, INFO) \ | |
66 | FUNC(MISSING_TAGGER_ENTRY, INFO) | |
c99ba492 JS |
67 | |
68 | #define MSG_ID(id, msg_type) FSCK_MSG_##id, | |
69 | enum fsck_msg_id { | |
70 | FOREACH_MSG_ID(MSG_ID) | |
71 | FSCK_MSG_MAX | |
72 | }; | |
73 | #undef MSG_ID | |
74 | ||
f417eed8 JS |
75 | #define STR(x) #x |
76 | #define MSG_ID(id, msg_type) { STR(id), NULL, FSCK_##msg_type }, | |
c99ba492 | 77 | static struct { |
f417eed8 JS |
78 | const char *id_string; |
79 | const char *downcased; | |
c99ba492 JS |
80 | int msg_type; |
81 | } msg_id_info[FSCK_MSG_MAX + 1] = { | |
82 | FOREACH_MSG_ID(MSG_ID) | |
f417eed8 | 83 | { NULL, NULL, -1 } |
c99ba492 JS |
84 | }; |
85 | #undef MSG_ID | |
86 | ||
f417eed8 JS |
87 | static int parse_msg_id(const char *text) |
88 | { | |
89 | int i; | |
90 | ||
91 | if (!msg_id_info[0].downcased) { | |
92 | /* convert id_string to lower case, without underscores. */ | |
93 | for (i = 0; i < FSCK_MSG_MAX; i++) { | |
94 | const char *p = msg_id_info[i].id_string; | |
95 | int len = strlen(p); | |
96 | char *q = xmalloc(len); | |
97 | ||
98 | msg_id_info[i].downcased = q; | |
99 | while (*p) | |
100 | if (*p == '_') | |
101 | p++; | |
102 | else | |
103 | *(q)++ = tolower(*(p)++); | |
104 | *q = '\0'; | |
105 | } | |
106 | } | |
107 | ||
108 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
109 | if (!strcmp(text, msg_id_info[i].downcased)) | |
110 | return i; | |
111 | ||
112 | return -1; | |
113 | } | |
114 | ||
c99ba492 JS |
115 | static int fsck_msg_type(enum fsck_msg_id msg_id, |
116 | struct fsck_options *options) | |
117 | { | |
118 | int msg_type; | |
119 | ||
0282f4dc JS |
120 | assert(msg_id >= 0 && msg_id < FSCK_MSG_MAX); |
121 | ||
122 | if (options->msg_type) | |
123 | msg_type = options->msg_type[msg_id]; | |
124 | else { | |
125 | msg_type = msg_id_info[msg_id].msg_type; | |
126 | if (options->strict && msg_type == FSCK_WARN) | |
127 | msg_type = FSCK_ERROR; | |
128 | } | |
c99ba492 JS |
129 | |
130 | return msg_type; | |
131 | } | |
132 | ||
cd94c6f9 JS |
133 | static void init_skiplist(struct fsck_options *options, const char *path) |
134 | { | |
135 | static struct sha1_array skiplist = SHA1_ARRAY_INIT; | |
136 | int sorted, fd; | |
137 | char buffer[41]; | |
138 | unsigned char sha1[20]; | |
139 | ||
140 | if (options->skiplist) | |
141 | sorted = options->skiplist->sorted; | |
142 | else { | |
143 | sorted = 1; | |
144 | options->skiplist = &skiplist; | |
145 | } | |
146 | ||
147 | fd = open(path, O_RDONLY); | |
148 | if (fd < 0) | |
149 | die("Could not open skip list: %s", path); | |
150 | for (;;) { | |
151 | int result = read_in_full(fd, buffer, sizeof(buffer)); | |
152 | if (result < 0) | |
153 | die_errno("Could not read '%s'", path); | |
154 | if (!result) | |
155 | break; | |
156 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') | |
157 | die("Invalid SHA-1: %s", buffer); | |
158 | sha1_array_append(&skiplist, sha1); | |
159 | if (sorted && skiplist.nr > 1 && | |
160 | hashcmp(skiplist.sha1[skiplist.nr - 2], | |
161 | sha1) > 0) | |
162 | sorted = 0; | |
163 | } | |
164 | close(fd); | |
165 | ||
166 | if (sorted) | |
167 | skiplist.sorted = 1; | |
168 | } | |
169 | ||
0282f4dc JS |
170 | static int parse_msg_type(const char *str) |
171 | { | |
172 | if (!strcmp(str, "error")) | |
173 | return FSCK_ERROR; | |
174 | else if (!strcmp(str, "warn")) | |
175 | return FSCK_WARN; | |
efaba7cc JS |
176 | else if (!strcmp(str, "ignore")) |
177 | return FSCK_IGNORE; | |
0282f4dc JS |
178 | else |
179 | die("Unknown fsck message type: '%s'", str); | |
180 | } | |
181 | ||
5d477a33 JS |
182 | int is_valid_msg_type(const char *msg_id, const char *msg_type) |
183 | { | |
184 | if (parse_msg_id(msg_id) < 0) | |
185 | return 0; | |
186 | parse_msg_type(msg_type); | |
187 | return 1; | |
188 | } | |
189 | ||
0282f4dc JS |
190 | void fsck_set_msg_type(struct fsck_options *options, |
191 | const char *msg_id, const char *msg_type) | |
192 | { | |
193 | int id = parse_msg_id(msg_id), type; | |
194 | ||
195 | if (id < 0) | |
196 | die("Unhandled message id: %s", msg_id); | |
197 | type = parse_msg_type(msg_type); | |
198 | ||
f50c4407 JS |
199 | if (type != FSCK_ERROR && msg_id_info[id].msg_type == FSCK_FATAL) |
200 | die("Cannot demote %s to %s", msg_id, msg_type); | |
201 | ||
0282f4dc JS |
202 | if (!options->msg_type) { |
203 | int i; | |
b32fa95f JK |
204 | int *msg_type; |
205 | ALLOC_ARRAY(msg_type, FSCK_MSG_MAX); | |
0282f4dc JS |
206 | for (i = 0; i < FSCK_MSG_MAX; i++) |
207 | msg_type[i] = fsck_msg_type(i, options); | |
208 | options->msg_type = msg_type; | |
209 | } | |
210 | ||
211 | options->msg_type[id] = type; | |
212 | } | |
213 | ||
214 | void fsck_set_msg_types(struct fsck_options *options, const char *values) | |
215 | { | |
216 | char *buf = xstrdup(values), *to_free = buf; | |
217 | int done = 0; | |
218 | ||
219 | while (!done) { | |
220 | int len = strcspn(buf, " ,|"), equal; | |
221 | ||
222 | done = !buf[len]; | |
223 | if (!len) { | |
224 | buf++; | |
225 | continue; | |
226 | } | |
227 | buf[len] = '\0'; | |
228 | ||
229 | for (equal = 0; | |
230 | equal < len && buf[equal] != '=' && buf[equal] != ':'; | |
231 | equal++) | |
232 | buf[equal] = tolower(buf[equal]); | |
233 | buf[equal] = '\0'; | |
234 | ||
cd94c6f9 JS |
235 | if (!strcmp(buf, "skiplist")) { |
236 | if (equal == len) | |
237 | die("skiplist requires a path"); | |
238 | init_skiplist(options, buf + equal + 1); | |
239 | buf += len + 1; | |
240 | continue; | |
241 | } | |
242 | ||
0282f4dc JS |
243 | if (equal == len) |
244 | die("Missing '=': '%s'", buf); | |
355885d5 | 245 | |
0282f4dc JS |
246 | fsck_set_msg_type(options, buf, buf + equal + 1); |
247 | buf += len + 1; | |
248 | } | |
249 | free(to_free); | |
250 | } | |
251 | ||
71ab8fa8 JS |
252 | static void append_msg_id(struct strbuf *sb, const char *msg_id) |
253 | { | |
254 | for (;;) { | |
255 | char c = *(msg_id)++; | |
256 | ||
257 | if (!c) | |
258 | break; | |
259 | if (c != '_') | |
260 | strbuf_addch(sb, tolower(c)); | |
261 | else { | |
262 | assert(*msg_id); | |
263 | strbuf_addch(sb, *(msg_id)++); | |
264 | } | |
265 | } | |
266 | ||
267 | strbuf_addstr(sb, ": "); | |
268 | } | |
269 | ||
c99ba492 JS |
270 | __attribute__((format (printf, 4, 5))) |
271 | static int report(struct fsck_options *options, struct object *object, | |
272 | enum fsck_msg_id id, const char *fmt, ...) | |
273 | { | |
274 | va_list ap; | |
275 | struct strbuf sb = STRBUF_INIT; | |
276 | int msg_type = fsck_msg_type(id, options), result; | |
277 | ||
efaba7cc JS |
278 | if (msg_type == FSCK_IGNORE) |
279 | return 0; | |
280 | ||
cd94c6f9 | 281 | if (options->skiplist && object && |
ed1c9977 | 282 | sha1_array_lookup(options->skiplist, object->oid.hash) >= 0) |
cd94c6f9 JS |
283 | return 0; |
284 | ||
f50c4407 JS |
285 | if (msg_type == FSCK_FATAL) |
286 | msg_type = FSCK_ERROR; | |
f27d05b1 JS |
287 | else if (msg_type == FSCK_INFO) |
288 | msg_type = FSCK_WARN; | |
f50c4407 | 289 | |
71ab8fa8 JS |
290 | append_msg_id(&sb, msg_id_info[id].id_string); |
291 | ||
c99ba492 JS |
292 | va_start(ap, fmt); |
293 | strbuf_vaddf(&sb, fmt, ap); | |
294 | result = options->error_func(object, msg_type, sb.buf); | |
295 | strbuf_release(&sb); | |
296 | va_end(ap); | |
297 | ||
298 | return result; | |
299 | } | |
300 | ||
7b35efd7 JS |
301 | static char *get_object_name(struct fsck_options *options, struct object *obj) |
302 | { | |
303 | if (!options->object_names) | |
304 | return NULL; | |
305 | return lookup_decoration(options->object_names, obj); | |
306 | } | |
307 | ||
308 | static void put_object_name(struct fsck_options *options, struct object *obj, | |
309 | const char *fmt, ...) | |
310 | { | |
311 | va_list ap; | |
312 | struct strbuf buf = STRBUF_INIT; | |
313 | char *existing; | |
314 | ||
315 | if (!options->object_names) | |
316 | return; | |
317 | existing = lookup_decoration(options->object_names, obj); | |
318 | if (existing) | |
319 | return; | |
320 | va_start(ap, fmt); | |
321 | strbuf_vaddf(&buf, fmt, ap); | |
322 | add_decoration(options->object_names, obj, strbuf_detach(&buf, NULL)); | |
323 | va_end(ap); | |
324 | } | |
325 | ||
22410549 | 326 | static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *options) |
355885d5 MK |
327 | { |
328 | struct tree_desc desc; | |
329 | struct name_entry entry; | |
330 | int res = 0; | |
7b35efd7 | 331 | const char *name; |
355885d5 MK |
332 | |
333 | if (parse_tree(tree)) | |
334 | return -1; | |
335 | ||
7b35efd7 | 336 | name = get_object_name(options, &tree->object); |
355885d5 MK |
337 | init_tree_desc(&desc, tree->buffer, tree->size); |
338 | while (tree_entry(&desc, &entry)) { | |
7b35efd7 | 339 | struct object *obj; |
355885d5 MK |
340 | int result; |
341 | ||
342 | if (S_ISGITLINK(entry.mode)) | |
343 | continue; | |
7b35efd7 JS |
344 | |
345 | if (S_ISDIR(entry.mode)) { | |
346 | obj = &lookup_tree(entry.oid->hash)->object; | |
347 | if (name) | |
348 | put_object_name(options, obj, "%s%s/", name, | |
349 | entry.path); | |
350 | result = options->walk(obj, OBJ_TREE, data, options); | |
351 | } | |
352 | else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) { | |
353 | obj = &lookup_blob(entry.oid->hash)->object; | |
354 | if (name) | |
355 | put_object_name(options, obj, "%s%s", name, | |
356 | entry.path); | |
357 | result = options->walk(obj, OBJ_BLOB, data, options); | |
358 | } | |
355885d5 | 359 | else { |
82247e9b | 360 | result = error("in tree %s: entry %s has bad mode %.6o", |
f2fd0760 | 361 | oid_to_hex(&tree->object.oid), entry.path, entry.mode); |
355885d5 MK |
362 | } |
363 | if (result < 0) | |
364 | return result; | |
365 | if (!res) | |
366 | res = result; | |
367 | } | |
368 | return res; | |
369 | } | |
370 | ||
22410549 | 371 | static int fsck_walk_commit(struct commit *commit, void *data, struct fsck_options *options) |
355885d5 | 372 | { |
7b35efd7 | 373 | int counter = 0, generation = 0, name_prefix_len = 0; |
355885d5 MK |
374 | struct commit_list *parents; |
375 | int res; | |
376 | int result; | |
7b35efd7 | 377 | const char *name; |
355885d5 MK |
378 | |
379 | if (parse_commit(commit)) | |
380 | return -1; | |
381 | ||
7b35efd7 JS |
382 | name = get_object_name(options, &commit->object); |
383 | if (name) | |
384 | put_object_name(options, &commit->tree->object, "%s:", name); | |
385 | ||
22410549 | 386 | result = options->walk((struct object *)commit->tree, OBJ_TREE, data, options); |
355885d5 MK |
387 | if (result < 0) |
388 | return result; | |
389 | res = result; | |
390 | ||
391 | parents = commit->parents; | |
7b35efd7 JS |
392 | if (name && parents) { |
393 | int len = strlen(name), power; | |
394 | ||
395 | if (len && name[len - 1] == '^') { | |
396 | generation = 1; | |
397 | name_prefix_len = len - 1; | |
398 | } | |
399 | else { /* parse ~<generation> suffix */ | |
400 | for (generation = 0, power = 1; | |
401 | len && isdigit(name[len - 1]); | |
402 | power *= 10) | |
403 | generation += power * (name[--len] - '0'); | |
404 | if (power > 1 && len && name[len - 1] == '~') | |
405 | name_prefix_len = len - 1; | |
406 | } | |
407 | } | |
408 | ||
355885d5 | 409 | while (parents) { |
7b35efd7 JS |
410 | if (name) { |
411 | struct object *obj = &parents->item->object; | |
412 | ||
413 | if (++counter > 1) | |
414 | put_object_name(options, obj, "%s^%d", | |
415 | name, counter); | |
416 | else if (generation > 0) | |
417 | put_object_name(options, obj, "%.*s~%d", | |
418 | name_prefix_len, name, generation + 1); | |
419 | else | |
420 | put_object_name(options, obj, "%s^", name); | |
421 | } | |
22410549 | 422 | result = options->walk((struct object *)parents->item, OBJ_COMMIT, data, options); |
355885d5 MK |
423 | if (result < 0) |
424 | return result; | |
425 | if (!res) | |
426 | res = result; | |
427 | parents = parents->next; | |
428 | } | |
429 | return res; | |
430 | } | |
431 | ||
22410549 | 432 | static int fsck_walk_tag(struct tag *tag, void *data, struct fsck_options *options) |
355885d5 | 433 | { |
7b35efd7 JS |
434 | char *name = get_object_name(options, &tag->object); |
435 | ||
355885d5 MK |
436 | if (parse_tag(tag)) |
437 | return -1; | |
7b35efd7 JS |
438 | if (name) |
439 | put_object_name(options, tag->tagged, "%s", name); | |
22410549 | 440 | return options->walk(tag->tagged, OBJ_ANY, data, options); |
355885d5 MK |
441 | } |
442 | ||
22410549 | 443 | int fsck_walk(struct object *obj, void *data, struct fsck_options *options) |
355885d5 MK |
444 | { |
445 | if (!obj) | |
446 | return -1; | |
447 | switch (obj->type) { | |
448 | case OBJ_BLOB: | |
449 | return 0; | |
450 | case OBJ_TREE: | |
22410549 | 451 | return fsck_walk_tree((struct tree *)obj, data, options); |
355885d5 | 452 | case OBJ_COMMIT: |
22410549 | 453 | return fsck_walk_commit((struct commit *)obj, data, options); |
355885d5 | 454 | case OBJ_TAG: |
22410549 | 455 | return fsck_walk_tag((struct tag *)obj, data, options); |
355885d5 | 456 | default: |
f2fd0760 | 457 | error("Unknown object type for %s", oid_to_hex(&obj->oid)); |
355885d5 MK |
458 | return -1; |
459 | } | |
460 | } | |
ba002f3b MK |
461 | |
462 | /* | |
463 | * The entries in a tree are ordered in the _path_ order, | |
464 | * which means that a directory entry is ordered by adding | |
465 | * a slash to the end of it. | |
466 | * | |
467 | * So a directory called "a" is ordered _after_ a file | |
468 | * called "a.c", because "a/" sorts after "a.c". | |
469 | */ | |
470 | #define TREE_UNORDERED (-1) | |
471 | #define TREE_HAS_DUPS (-2) | |
472 | ||
473 | static int verify_ordered(unsigned mode1, const char *name1, unsigned mode2, const char *name2) | |
474 | { | |
475 | int len1 = strlen(name1); | |
476 | int len2 = strlen(name2); | |
477 | int len = len1 < len2 ? len1 : len2; | |
478 | unsigned char c1, c2; | |
479 | int cmp; | |
480 | ||
481 | cmp = memcmp(name1, name2, len); | |
482 | if (cmp < 0) | |
483 | return 0; | |
484 | if (cmp > 0) | |
485 | return TREE_UNORDERED; | |
486 | ||
487 | /* | |
488 | * Ok, the first <len> characters are the same. | |
489 | * Now we need to order the next one, but turn | |
490 | * a '\0' into a '/' for a directory entry. | |
491 | */ | |
492 | c1 = name1[len]; | |
493 | c2 = name2[len]; | |
494 | if (!c1 && !c2) | |
495 | /* | |
496 | * git-write-tree used to write out a nonsense tree that has | |
497 | * entries with the same name, one blob and one tree. Make | |
498 | * sure we do not have duplicate entries. | |
499 | */ | |
500 | return TREE_HAS_DUPS; | |
501 | if (!c1 && S_ISDIR(mode1)) | |
502 | c1 = '/'; | |
503 | if (!c2 && S_ISDIR(mode2)) | |
504 | c2 = '/'; | |
505 | return c1 < c2 ? 0 : TREE_UNORDERED; | |
506 | } | |
507 | ||
22410549 | 508 | static int fsck_tree(struct tree *item, struct fsck_options *options) |
ba002f3b MK |
509 | { |
510 | int retval; | |
c479d14a | 511 | int has_null_sha1 = 0; |
ba002f3b MK |
512 | int has_full_path = 0; |
513 | int has_empty_name = 0; | |
5d34a435 JK |
514 | int has_dot = 0; |
515 | int has_dotdot = 0; | |
5c17f512 | 516 | int has_dotgit = 0; |
ba002f3b MK |
517 | int has_zero_pad = 0; |
518 | int has_bad_modes = 0; | |
519 | int has_dup_entries = 0; | |
520 | int not_properly_sorted = 0; | |
521 | struct tree_desc desc; | |
522 | unsigned o_mode; | |
523 | const char *o_name; | |
ba002f3b MK |
524 | |
525 | init_tree_desc(&desc, item->buffer, item->size); | |
526 | ||
527 | o_mode = 0; | |
528 | o_name = NULL; | |
ba002f3b MK |
529 | |
530 | while (desc.size) { | |
531 | unsigned mode; | |
532 | const char *name; | |
ce6663a9 | 533 | const struct object_id *oid; |
ba002f3b | 534 | |
ce6663a9 | 535 | oid = tree_entry_extract(&desc, &name, &mode); |
ba002f3b | 536 | |
ce6663a9 | 537 | has_null_sha1 |= is_null_oid(oid); |
effd12ec HS |
538 | has_full_path |= !!strchr(name, '/'); |
539 | has_empty_name |= !*name; | |
540 | has_dot |= !strcmp(name, "."); | |
541 | has_dotdot |= !strcmp(name, ".."); | |
5e519fb8 JH |
542 | has_dotgit |= (!strcmp(name, ".git") || |
543 | is_hfs_dotgit(name) || | |
544 | is_ntfs_dotgit(name)); | |
ba002f3b MK |
545 | has_zero_pad |= *(char *)desc.buffer == '0'; |
546 | update_tree_entry(&desc); | |
547 | ||
548 | switch (mode) { | |
549 | /* | |
550 | * Standard modes.. | |
551 | */ | |
552 | case S_IFREG | 0755: | |
553 | case S_IFREG | 0644: | |
554 | case S_IFLNK: | |
555 | case S_IFDIR: | |
556 | case S_IFGITLINK: | |
557 | break; | |
558 | /* | |
559 | * This is nonstandard, but we had a few of these | |
560 | * early on when we honored the full set of mode | |
561 | * bits.. | |
562 | */ | |
563 | case S_IFREG | 0664: | |
22410549 | 564 | if (!options->strict) |
ba002f3b MK |
565 | break; |
566 | default: | |
567 | has_bad_modes = 1; | |
568 | } | |
569 | ||
570 | if (o_name) { | |
571 | switch (verify_ordered(o_mode, o_name, mode, name)) { | |
572 | case TREE_UNORDERED: | |
573 | not_properly_sorted = 1; | |
574 | break; | |
575 | case TREE_HAS_DUPS: | |
576 | has_dup_entries = 1; | |
577 | break; | |
578 | default: | |
579 | break; | |
580 | } | |
581 | } | |
582 | ||
583 | o_mode = mode; | |
584 | o_name = name; | |
ba002f3b MK |
585 | } |
586 | ||
587 | retval = 0; | |
c479d14a | 588 | if (has_null_sha1) |
c99ba492 | 589 | retval += report(options, &item->object, FSCK_MSG_NULL_SHA1, "contains entries pointing to null sha1"); |
ba002f3b | 590 | if (has_full_path) |
c99ba492 | 591 | retval += report(options, &item->object, FSCK_MSG_FULL_PATHNAME, "contains full pathnames"); |
ba002f3b | 592 | if (has_empty_name) |
c99ba492 | 593 | retval += report(options, &item->object, FSCK_MSG_EMPTY_NAME, "contains empty pathname"); |
5d34a435 | 594 | if (has_dot) |
c99ba492 | 595 | retval += report(options, &item->object, FSCK_MSG_HAS_DOT, "contains '.'"); |
5d34a435 | 596 | if (has_dotdot) |
c99ba492 | 597 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTDOT, "contains '..'"); |
5c17f512 | 598 | if (has_dotgit) |
c99ba492 | 599 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTGIT, "contains '.git'"); |
ba002f3b | 600 | if (has_zero_pad) |
c99ba492 | 601 | retval += report(options, &item->object, FSCK_MSG_ZERO_PADDED_FILEMODE, "contains zero-padded file modes"); |
ba002f3b | 602 | if (has_bad_modes) |
c99ba492 | 603 | retval += report(options, &item->object, FSCK_MSG_BAD_FILEMODE, "contains bad file modes"); |
ba002f3b | 604 | if (has_dup_entries) |
c99ba492 | 605 | retval += report(options, &item->object, FSCK_MSG_DUPLICATE_ENTRIES, "contains duplicate file entries"); |
ba002f3b | 606 | if (not_properly_sorted) |
c99ba492 | 607 | retval += report(options, &item->object, FSCK_MSG_TREE_NOT_SORTED, "not properly sorted"); |
ba002f3b MK |
608 | return retval; |
609 | } | |
610 | ||
84d18c0b | 611 | static int verify_headers(const void *data, unsigned long size, |
b2f44feb | 612 | struct object *obj, struct fsck_options *options) |
4d0d8975 JS |
613 | { |
614 | const char *buffer = (const char *)data; | |
615 | unsigned long i; | |
616 | ||
617 | for (i = 0; i < size; i++) { | |
618 | switch (buffer[i]) { | |
619 | case '\0': | |
c99ba492 JS |
620 | return report(options, obj, |
621 | FSCK_MSG_NUL_IN_HEADER, | |
622 | "unterminated header: NUL at offset %ld", i); | |
4d0d8975 JS |
623 | case '\n': |
624 | if (i + 1 < size && buffer[i + 1] == '\n') | |
625 | return 0; | |
626 | } | |
627 | } | |
628 | ||
84d18c0b JH |
629 | /* |
630 | * We did not find double-LF that separates the header | |
631 | * and the body. Not having a body is not a crime but | |
632 | * we do want to see the terminating LF for the last header | |
633 | * line. | |
634 | */ | |
635 | if (size && buffer[size - 1] == '\n') | |
636 | return 0; | |
637 | ||
c99ba492 JS |
638 | return report(options, obj, |
639 | FSCK_MSG_UNTERMINATED_HEADER, "unterminated header"); | |
4d0d8975 JS |
640 | } |
641 | ||
22410549 | 642 | static int fsck_ident(const char **ident, struct object *obj, struct fsck_options *options) |
daae1922 | 643 | { |
e6826e33 | 644 | const char *p = *ident; |
d4b8de04 JK |
645 | char *end; |
646 | ||
e6826e33 JS |
647 | *ident = strchrnul(*ident, '\n'); |
648 | if (**ident == '\n') | |
649 | (*ident)++; | |
650 | ||
651 | if (*p == '<') | |
c99ba492 | 652 | return report(options, obj, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
653 | p += strcspn(p, "<>\n"); |
654 | if (*p == '>') | |
c99ba492 | 655 | return report(options, obj, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name"); |
e6826e33 | 656 | if (*p != '<') |
c99ba492 | 657 | return report(options, obj, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email"); |
e6826e33 | 658 | if (p[-1] != ' ') |
c99ba492 | 659 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
660 | p++; |
661 | p += strcspn(p, "<>\n"); | |
662 | if (*p != '>') | |
c99ba492 | 663 | return report(options, obj, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email"); |
e6826e33 JS |
664 | p++; |
665 | if (*p != ' ') | |
c99ba492 | 666 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date"); |
e6826e33 JS |
667 | p++; |
668 | if (*p == '0' && p[1] != ' ') | |
c99ba492 | 669 | return report(options, obj, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date"); |
e6826e33 | 670 | if (date_overflows(strtoul(p, &end, 10))) |
c99ba492 | 671 | return report(options, obj, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow"); |
e6826e33 | 672 | if ((end == p || *end != ' ')) |
c99ba492 | 673 | return report(options, obj, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date"); |
e6826e33 JS |
674 | p = end + 1; |
675 | if ((*p != '+' && *p != '-') || | |
676 | !isdigit(p[1]) || | |
677 | !isdigit(p[2]) || | |
678 | !isdigit(p[3]) || | |
679 | !isdigit(p[4]) || | |
680 | (p[5] != '\n')) | |
c99ba492 | 681 | return report(options, obj, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone"); |
e6826e33 | 682 | p += 6; |
daae1922 JN |
683 | return 0; |
684 | } | |
685 | ||
bc6b8fc1 | 686 | static int fsck_commit_buffer(struct commit *commit, const char *buffer, |
22410549 | 687 | unsigned long size, struct fsck_options *options) |
ba002f3b | 688 | { |
ba002f3b MK |
689 | unsigned char tree_sha1[20], sha1[20]; |
690 | struct commit_graft *graft; | |
c9ad147f | 691 | unsigned parent_count, parent_line_count = 0, author_count; |
daae1922 | 692 | int err; |
6d2d780f | 693 | const char *buffer_begin = buffer; |
ba002f3b | 694 | |
b2f44feb | 695 | if (verify_headers(buffer, size, &commit->object, options)) |
4d0d8975 JS |
696 | return -1; |
697 | ||
cf4fff57 | 698 | if (!skip_prefix(buffer, "tree ", &buffer)) |
c99ba492 | 699 | return report(options, &commit->object, FSCK_MSG_MISSING_TREE, "invalid format - expected 'tree' line"); |
b3584761 JS |
700 | if (get_sha1_hex(buffer, tree_sha1) || buffer[40] != '\n') { |
701 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE_SHA1, "invalid 'tree' line format - bad sha1"); | |
702 | if (err) | |
703 | return err; | |
704 | } | |
2d820a61 | 705 | buffer += 41; |
cf4fff57 | 706 | while (skip_prefix(buffer, "parent ", &buffer)) { |
b3584761 JS |
707 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { |
708 | err = report(options, &commit->object, FSCK_MSG_BAD_PARENT_SHA1, "invalid 'parent' line format - bad sha1"); | |
709 | if (err) | |
710 | return err; | |
711 | } | |
2d820a61 | 712 | buffer += 41; |
9d02150c | 713 | parent_line_count++; |
ba002f3b | 714 | } |
ed1c9977 | 715 | graft = lookup_commit_graft(commit->object.oid.hash); |
9d02150c | 716 | parent_count = commit_list_count(commit->parents); |
ba002f3b | 717 | if (graft) { |
9d02150c | 718 | if (graft->nr_parent == -1 && !parent_count) |
ba002f3b | 719 | ; /* shallow commit */ |
b3584761 JS |
720 | else if (graft->nr_parent != parent_count) { |
721 | err = report(options, &commit->object, FSCK_MSG_MISSING_GRAFT, "graft objects missing"); | |
722 | if (err) | |
723 | return err; | |
724 | } | |
ba002f3b | 725 | } else { |
b3584761 JS |
726 | if (parent_count != parent_line_count) { |
727 | err = report(options, &commit->object, FSCK_MSG_MISSING_PARENT, "parent objects missing"); | |
728 | if (err) | |
729 | return err; | |
730 | } | |
ba002f3b | 731 | } |
c9ad147f JS |
732 | author_count = 0; |
733 | while (skip_prefix(buffer, "author ", &buffer)) { | |
734 | author_count++; | |
735 | err = fsck_ident(&buffer, &commit->object, options); | |
736 | if (err) | |
737 | return err; | |
ba002f3b | 738 | } |
c9ad147f JS |
739 | if (author_count < 1) |
740 | err = report(options, &commit->object, FSCK_MSG_MISSING_AUTHOR, "invalid format - expected 'author' line"); | |
741 | else if (author_count > 1) | |
742 | err = report(options, &commit->object, FSCK_MSG_MULTIPLE_AUTHORS, "invalid format - multiple 'author' lines"); | |
daae1922 JN |
743 | if (err) |
744 | return err; | |
cf4fff57 | 745 | if (!skip_prefix(buffer, "committer ", &buffer)) |
c99ba492 | 746 | return report(options, &commit->object, FSCK_MSG_MISSING_COMMITTER, "invalid format - expected 'committer' line"); |
22410549 | 747 | err = fsck_ident(&buffer, &commit->object, options); |
daae1922 JN |
748 | if (err) |
749 | return err; | |
5af29718 JH |
750 | if (!commit->tree) { |
751 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE, "could not load commit's tree %s", sha1_to_hex(tree_sha1)); | |
752 | if (err) | |
753 | return err; | |
754 | } | |
6d2d780f JH |
755 | if (memchr(buffer_begin, '\0', size)) { |
756 | err = report(options, &commit->object, FSCK_MSG_NUL_IN_COMMIT, | |
757 | "NUL byte in the commit object body"); | |
758 | if (err) | |
759 | return err; | |
760 | } | |
ba002f3b MK |
761 | return 0; |
762 | } | |
763 | ||
90a398bb | 764 | static int fsck_commit(struct commit *commit, const char *data, |
22410549 | 765 | unsigned long size, struct fsck_options *options) |
bc6b8fc1 | 766 | { |
90a398bb | 767 | const char *buffer = data ? data : get_commit_buffer(commit, &size); |
22410549 | 768 | int ret = fsck_commit_buffer(commit, buffer, size, options); |
90a398bb JS |
769 | if (!data) |
770 | unuse_commit_buffer(commit, buffer); | |
bc6b8fc1 JK |
771 | return ret; |
772 | } | |
773 | ||
cec097be | 774 | static int fsck_tag_buffer(struct tag *tag, const char *data, |
22410549 | 775 | unsigned long size, struct fsck_options *options) |
cec097be JS |
776 | { |
777 | unsigned char sha1[20]; | |
778 | int ret = 0; | |
779 | const char *buffer; | |
780 | char *to_free = NULL, *eol; | |
781 | struct strbuf sb = STRBUF_INIT; | |
782 | ||
783 | if (data) | |
784 | buffer = data; | |
785 | else { | |
786 | enum object_type type; | |
787 | ||
788 | buffer = to_free = | |
ed1c9977 | 789 | read_sha1_file(tag->object.oid.hash, &type, &size); |
cec097be | 790 | if (!buffer) |
c99ba492 JS |
791 | return report(options, &tag->object, |
792 | FSCK_MSG_MISSING_TAG_OBJECT, | |
cec097be JS |
793 | "cannot read tag object"); |
794 | ||
795 | if (type != OBJ_TAG) { | |
c99ba492 JS |
796 | ret = report(options, &tag->object, |
797 | FSCK_MSG_TAG_OBJECT_NOT_TAG, | |
cec097be JS |
798 | "expected tag got %s", |
799 | typename(type)); | |
800 | goto done; | |
801 | } | |
802 | } | |
803 | ||
8a272f29 RS |
804 | ret = verify_headers(buffer, size, &tag->object, options); |
805 | if (ret) | |
cec097be JS |
806 | goto done; |
807 | ||
808 | if (!skip_prefix(buffer, "object ", &buffer)) { | |
c99ba492 | 809 | ret = report(options, &tag->object, FSCK_MSG_MISSING_OBJECT, "invalid format - expected 'object' line"); |
cec097be JS |
810 | goto done; |
811 | } | |
812 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { | |
c99ba492 | 813 | ret = report(options, &tag->object, FSCK_MSG_BAD_OBJECT_SHA1, "invalid 'object' line format - bad sha1"); |
7d7d5b05 JS |
814 | if (ret) |
815 | goto done; | |
cec097be JS |
816 | } |
817 | buffer += 41; | |
818 | ||
819 | if (!skip_prefix(buffer, "type ", &buffer)) { | |
c99ba492 | 820 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE_ENTRY, "invalid format - expected 'type' line"); |
cec097be JS |
821 | goto done; |
822 | } | |
823 | eol = strchr(buffer, '\n'); | |
824 | if (!eol) { | |
c99ba492 | 825 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
826 | goto done; |
827 | } | |
828 | if (type_from_string_gently(buffer, eol - buffer, 1) < 0) | |
c99ba492 | 829 | ret = report(options, &tag->object, FSCK_MSG_BAD_TYPE, "invalid 'type' value"); |
cec097be JS |
830 | if (ret) |
831 | goto done; | |
832 | buffer = eol + 1; | |
833 | ||
834 | if (!skip_prefix(buffer, "tag ", &buffer)) { | |
c99ba492 | 835 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG_ENTRY, "invalid format - expected 'tag' line"); |
cec097be JS |
836 | goto done; |
837 | } | |
838 | eol = strchr(buffer, '\n'); | |
839 | if (!eol) { | |
c99ba492 | 840 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
841 | goto done; |
842 | } | |
843 | strbuf_addf(&sb, "refs/tags/%.*s", (int)(eol - buffer), buffer); | |
f27d05b1 JS |
844 | if (check_refname_format(sb.buf, 0)) { |
845 | ret = report(options, &tag->object, FSCK_MSG_BAD_TAG_NAME, | |
c99ba492 | 846 | "invalid 'tag' name: %.*s", |
7add4419 | 847 | (int)(eol - buffer), buffer); |
f27d05b1 JS |
848 | if (ret) |
849 | goto done; | |
850 | } | |
cec097be JS |
851 | buffer = eol + 1; |
852 | ||
f27d05b1 | 853 | if (!skip_prefix(buffer, "tagger ", &buffer)) { |
cec097be | 854 | /* early tags do not contain 'tagger' lines; warn only */ |
f27d05b1 JS |
855 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAGGER_ENTRY, "invalid format - expected 'tagger' line"); |
856 | if (ret) | |
857 | goto done; | |
858 | } | |
cec097be | 859 | else |
22410549 | 860 | ret = fsck_ident(&buffer, &tag->object, options); |
cec097be JS |
861 | |
862 | done: | |
863 | strbuf_release(&sb); | |
864 | free(to_free); | |
865 | return ret; | |
866 | } | |
867 | ||
90a398bb | 868 | static int fsck_tag(struct tag *tag, const char *data, |
22410549 | 869 | unsigned long size, struct fsck_options *options) |
ba002f3b MK |
870 | { |
871 | struct object *tagged = tag->tagged; | |
872 | ||
873 | if (!tagged) | |
c99ba492 | 874 | return report(options, &tag->object, FSCK_MSG_BAD_TAG_OBJECT, "could not load tagged object"); |
cec097be | 875 | |
22410549 | 876 | return fsck_tag_buffer(tag, data, size, options); |
ba002f3b MK |
877 | } |
878 | ||
90a398bb | 879 | int fsck_object(struct object *obj, void *data, unsigned long size, |
22410549 | 880 | struct fsck_options *options) |
ba002f3b MK |
881 | { |
882 | if (!obj) | |
c99ba492 | 883 | return report(options, obj, FSCK_MSG_BAD_OBJECT_SHA1, "no valid object to fsck"); |
ba002f3b MK |
884 | |
885 | if (obj->type == OBJ_BLOB) | |
886 | return 0; | |
887 | if (obj->type == OBJ_TREE) | |
22410549 | 888 | return fsck_tree((struct tree *) obj, options); |
ba002f3b | 889 | if (obj->type == OBJ_COMMIT) |
90a398bb | 890 | return fsck_commit((struct commit *) obj, (const char *) data, |
22410549 | 891 | size, options); |
ba002f3b | 892 | if (obj->type == OBJ_TAG) |
90a398bb | 893 | return fsck_tag((struct tag *) obj, (const char *) data, |
22410549 | 894 | size, options); |
ba002f3b | 895 | |
c99ba492 | 896 | return report(options, obj, FSCK_MSG_UNKNOWN_TYPE, "unknown type '%d' (internal fsck error)", |
ba002f3b MK |
897 | obj->type); |
898 | } | |
d6ffc8d7 | 899 | |
c99ba492 | 900 | int fsck_error_function(struct object *obj, int msg_type, const char *message) |
d6ffc8d7 | 901 | { |
0282f4dc | 902 | if (msg_type == FSCK_WARN) { |
f2fd0760 | 903 | warning("object %s: %s", oid_to_hex(&obj->oid), message); |
0282f4dc JS |
904 | return 0; |
905 | } | |
f2fd0760 | 906 | error("object %s: %s", oid_to_hex(&obj->oid), message); |
d6ffc8d7 MK |
907 | return 1; |
908 | } |