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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" |
3ac68a93 | 13 | #include "help.h" |
355885d5 | 14 | |
f50c4407 | 15 | #define FSCK_FATAL -1 |
f27d05b1 | 16 | #define FSCK_INFO -2 |
f50c4407 | 17 | |
c99ba492 | 18 | #define FOREACH_MSG_ID(FUNC) \ |
f50c4407 JS |
19 | /* fatal errors */ \ |
20 | FUNC(NUL_IN_HEADER, FATAL) \ | |
21 | FUNC(UNTERMINATED_HEADER, FATAL) \ | |
c99ba492 JS |
22 | /* errors */ \ |
23 | FUNC(BAD_DATE, ERROR) \ | |
24 | FUNC(BAD_DATE_OVERFLOW, ERROR) \ | |
25 | FUNC(BAD_EMAIL, ERROR) \ | |
26 | FUNC(BAD_NAME, ERROR) \ | |
27 | FUNC(BAD_OBJECT_SHA1, ERROR) \ | |
28 | FUNC(BAD_PARENT_SHA1, ERROR) \ | |
29 | FUNC(BAD_TAG_OBJECT, ERROR) \ | |
30 | FUNC(BAD_TIMEZONE, ERROR) \ | |
31 | FUNC(BAD_TREE, ERROR) \ | |
32 | FUNC(BAD_TREE_SHA1, ERROR) \ | |
33 | FUNC(BAD_TYPE, ERROR) \ | |
34 | FUNC(DUPLICATE_ENTRIES, ERROR) \ | |
35 | FUNC(MISSING_AUTHOR, ERROR) \ | |
36 | FUNC(MISSING_COMMITTER, ERROR) \ | |
37 | FUNC(MISSING_EMAIL, ERROR) \ | |
38 | FUNC(MISSING_GRAFT, ERROR) \ | |
39 | FUNC(MISSING_NAME_BEFORE_EMAIL, ERROR) \ | |
40 | FUNC(MISSING_OBJECT, ERROR) \ | |
41 | FUNC(MISSING_PARENT, ERROR) \ | |
42 | FUNC(MISSING_SPACE_BEFORE_DATE, ERROR) \ | |
43 | FUNC(MISSING_SPACE_BEFORE_EMAIL, ERROR) \ | |
44 | FUNC(MISSING_TAG, ERROR) \ | |
45 | FUNC(MISSING_TAG_ENTRY, ERROR) \ | |
46 | FUNC(MISSING_TAG_OBJECT, ERROR) \ | |
47 | FUNC(MISSING_TREE, ERROR) \ | |
48 | FUNC(MISSING_TYPE, ERROR) \ | |
49 | FUNC(MISSING_TYPE_ENTRY, ERROR) \ | |
c9ad147f | 50 | FUNC(MULTIPLE_AUTHORS, ERROR) \ |
c99ba492 JS |
51 | FUNC(TAG_OBJECT_NOT_TAG, ERROR) \ |
52 | FUNC(TREE_NOT_SORTED, ERROR) \ | |
53 | FUNC(UNKNOWN_TYPE, ERROR) \ | |
c99ba492 JS |
54 | FUNC(ZERO_PADDED_DATE, ERROR) \ |
55 | /* warnings */ \ | |
56 | FUNC(BAD_FILEMODE, WARN) \ | |
c99ba492 JS |
57 | FUNC(EMPTY_NAME, WARN) \ |
58 | FUNC(FULL_PATHNAME, WARN) \ | |
59 | FUNC(HAS_DOT, WARN) \ | |
60 | FUNC(HAS_DOTDOT, WARN) \ | |
61 | FUNC(HAS_DOTGIT, WARN) \ | |
c99ba492 | 62 | FUNC(NULL_SHA1, WARN) \ |
f27d05b1 | 63 | FUNC(ZERO_PADDED_FILEMODE, WARN) \ |
6d2d780f | 64 | FUNC(NUL_IN_COMMIT, WARN) \ |
f27d05b1 JS |
65 | /* infos (reported as warnings, but ignored by default) */ \ |
66 | FUNC(BAD_TAG_NAME, INFO) \ | |
67 | FUNC(MISSING_TAGGER_ENTRY, INFO) | |
c99ba492 JS |
68 | |
69 | #define MSG_ID(id, msg_type) FSCK_MSG_##id, | |
70 | enum fsck_msg_id { | |
71 | FOREACH_MSG_ID(MSG_ID) | |
72 | FSCK_MSG_MAX | |
73 | }; | |
74 | #undef MSG_ID | |
75 | ||
f417eed8 JS |
76 | #define STR(x) #x |
77 | #define MSG_ID(id, msg_type) { STR(id), NULL, FSCK_##msg_type }, | |
c99ba492 | 78 | static struct { |
f417eed8 JS |
79 | const char *id_string; |
80 | const char *downcased; | |
c99ba492 JS |
81 | int msg_type; |
82 | } msg_id_info[FSCK_MSG_MAX + 1] = { | |
83 | FOREACH_MSG_ID(MSG_ID) | |
f417eed8 | 84 | { NULL, NULL, -1 } |
c99ba492 JS |
85 | }; |
86 | #undef MSG_ID | |
87 | ||
a46baac6 | 88 | static void prepare_msg_ids(void) |
f417eed8 JS |
89 | { |
90 | int i; | |
91 | ||
a46baac6 NTND |
92 | if (msg_id_info[0].downcased) |
93 | return; | |
94 | ||
95 | /* convert id_string to lower case, without underscores. */ | |
96 | for (i = 0; i < FSCK_MSG_MAX; i++) { | |
97 | const char *p = msg_id_info[i].id_string; | |
98 | int len = strlen(p); | |
99 | char *q = xmalloc(len); | |
100 | ||
101 | msg_id_info[i].downcased = q; | |
102 | while (*p) | |
103 | if (*p == '_') | |
104 | p++; | |
105 | else | |
106 | *(q)++ = tolower(*(p)++); | |
107 | *q = '\0'; | |
f417eed8 | 108 | } |
a46baac6 NTND |
109 | } |
110 | ||
111 | static int parse_msg_id(const char *text) | |
112 | { | |
113 | int i; | |
114 | ||
115 | prepare_msg_ids(); | |
f417eed8 JS |
116 | |
117 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
118 | if (!strcmp(text, msg_id_info[i].downcased)) | |
119 | return i; | |
120 | ||
121 | return -1; | |
122 | } | |
123 | ||
3ac68a93 NTND |
124 | void list_config_fsck_msg_ids(struct string_list *list, const char *prefix) |
125 | { | |
126 | int i; | |
127 | ||
128 | prepare_msg_ids(); | |
129 | ||
130 | /* TODO: we can do better by producing camelCase names */ | |
131 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
132 | list_config_item(list, prefix, msg_id_info[i].downcased); | |
133 | } | |
134 | ||
c99ba492 JS |
135 | static int fsck_msg_type(enum fsck_msg_id msg_id, |
136 | struct fsck_options *options) | |
137 | { | |
138 | int msg_type; | |
139 | ||
0282f4dc JS |
140 | assert(msg_id >= 0 && msg_id < FSCK_MSG_MAX); |
141 | ||
142 | if (options->msg_type) | |
143 | msg_type = options->msg_type[msg_id]; | |
144 | else { | |
145 | msg_type = msg_id_info[msg_id].msg_type; | |
146 | if (options->strict && msg_type == FSCK_WARN) | |
147 | msg_type = FSCK_ERROR; | |
148 | } | |
c99ba492 JS |
149 | |
150 | return msg_type; | |
151 | } | |
152 | ||
cd94c6f9 JS |
153 | static void init_skiplist(struct fsck_options *options, const char *path) |
154 | { | |
910650d2 | 155 | static struct oid_array skiplist = OID_ARRAY_INIT; |
cd94c6f9 | 156 | int sorted, fd; |
365c27fb | 157 | char buffer[GIT_MAX_HEXSZ + 1]; |
158 | struct object_id oid; | |
cd94c6f9 JS |
159 | |
160 | if (options->skiplist) | |
161 | sorted = options->skiplist->sorted; | |
162 | else { | |
163 | sorted = 1; | |
164 | options->skiplist = &skiplist; | |
165 | } | |
166 | ||
167 | fd = open(path, O_RDONLY); | |
168 | if (fd < 0) | |
169 | die("Could not open skip list: %s", path); | |
170 | for (;;) { | |
365c27fb | 171 | const char *p; |
cd94c6f9 JS |
172 | int result = read_in_full(fd, buffer, sizeof(buffer)); |
173 | if (result < 0) | |
174 | die_errno("Could not read '%s'", path); | |
175 | if (!result) | |
176 | break; | |
365c27fb | 177 | if (parse_oid_hex(buffer, &oid, &p) || *p != '\n') |
cd94c6f9 | 178 | die("Invalid SHA-1: %s", buffer); |
910650d2 | 179 | oid_array_append(&skiplist, &oid); |
cd94c6f9 | 180 | if (sorted && skiplist.nr > 1 && |
ee3051bd | 181 | oidcmp(&skiplist.oid[skiplist.nr - 2], |
182 | &oid) > 0) | |
cd94c6f9 JS |
183 | sorted = 0; |
184 | } | |
185 | close(fd); | |
186 | ||
187 | if (sorted) | |
188 | skiplist.sorted = 1; | |
189 | } | |
190 | ||
0282f4dc JS |
191 | static int parse_msg_type(const char *str) |
192 | { | |
193 | if (!strcmp(str, "error")) | |
194 | return FSCK_ERROR; | |
195 | else if (!strcmp(str, "warn")) | |
196 | return FSCK_WARN; | |
efaba7cc JS |
197 | else if (!strcmp(str, "ignore")) |
198 | return FSCK_IGNORE; | |
0282f4dc JS |
199 | else |
200 | die("Unknown fsck message type: '%s'", str); | |
201 | } | |
202 | ||
5d477a33 JS |
203 | int is_valid_msg_type(const char *msg_id, const char *msg_type) |
204 | { | |
205 | if (parse_msg_id(msg_id) < 0) | |
206 | return 0; | |
207 | parse_msg_type(msg_type); | |
208 | return 1; | |
209 | } | |
210 | ||
0282f4dc JS |
211 | void fsck_set_msg_type(struct fsck_options *options, |
212 | const char *msg_id, const char *msg_type) | |
213 | { | |
214 | int id = parse_msg_id(msg_id), type; | |
215 | ||
216 | if (id < 0) | |
217 | die("Unhandled message id: %s", msg_id); | |
218 | type = parse_msg_type(msg_type); | |
219 | ||
f50c4407 JS |
220 | if (type != FSCK_ERROR && msg_id_info[id].msg_type == FSCK_FATAL) |
221 | die("Cannot demote %s to %s", msg_id, msg_type); | |
222 | ||
0282f4dc JS |
223 | if (!options->msg_type) { |
224 | int i; | |
b32fa95f JK |
225 | int *msg_type; |
226 | ALLOC_ARRAY(msg_type, FSCK_MSG_MAX); | |
0282f4dc JS |
227 | for (i = 0; i < FSCK_MSG_MAX; i++) |
228 | msg_type[i] = fsck_msg_type(i, options); | |
229 | options->msg_type = msg_type; | |
230 | } | |
231 | ||
232 | options->msg_type[id] = type; | |
233 | } | |
234 | ||
235 | void fsck_set_msg_types(struct fsck_options *options, const char *values) | |
236 | { | |
237 | char *buf = xstrdup(values), *to_free = buf; | |
238 | int done = 0; | |
239 | ||
240 | while (!done) { | |
241 | int len = strcspn(buf, " ,|"), equal; | |
242 | ||
243 | done = !buf[len]; | |
244 | if (!len) { | |
245 | buf++; | |
246 | continue; | |
247 | } | |
248 | buf[len] = '\0'; | |
249 | ||
250 | for (equal = 0; | |
251 | equal < len && buf[equal] != '=' && buf[equal] != ':'; | |
252 | equal++) | |
253 | buf[equal] = tolower(buf[equal]); | |
254 | buf[equal] = '\0'; | |
255 | ||
cd94c6f9 JS |
256 | if (!strcmp(buf, "skiplist")) { |
257 | if (equal == len) | |
258 | die("skiplist requires a path"); | |
259 | init_skiplist(options, buf + equal + 1); | |
260 | buf += len + 1; | |
261 | continue; | |
262 | } | |
263 | ||
0282f4dc JS |
264 | if (equal == len) |
265 | die("Missing '=': '%s'", buf); | |
355885d5 | 266 | |
0282f4dc JS |
267 | fsck_set_msg_type(options, buf, buf + equal + 1); |
268 | buf += len + 1; | |
269 | } | |
270 | free(to_free); | |
271 | } | |
272 | ||
71ab8fa8 JS |
273 | static void append_msg_id(struct strbuf *sb, const char *msg_id) |
274 | { | |
275 | for (;;) { | |
276 | char c = *(msg_id)++; | |
277 | ||
278 | if (!c) | |
279 | break; | |
280 | if (c != '_') | |
281 | strbuf_addch(sb, tolower(c)); | |
282 | else { | |
283 | assert(*msg_id); | |
284 | strbuf_addch(sb, *(msg_id)++); | |
285 | } | |
286 | } | |
287 | ||
288 | strbuf_addstr(sb, ": "); | |
289 | } | |
290 | ||
c99ba492 JS |
291 | __attribute__((format (printf, 4, 5))) |
292 | static int report(struct fsck_options *options, struct object *object, | |
293 | enum fsck_msg_id id, const char *fmt, ...) | |
294 | { | |
295 | va_list ap; | |
296 | struct strbuf sb = STRBUF_INIT; | |
297 | int msg_type = fsck_msg_type(id, options), result; | |
298 | ||
efaba7cc JS |
299 | if (msg_type == FSCK_IGNORE) |
300 | return 0; | |
301 | ||
cd94c6f9 | 302 | if (options->skiplist && object && |
910650d2 | 303 | oid_array_lookup(options->skiplist, &object->oid) >= 0) |
cd94c6f9 JS |
304 | return 0; |
305 | ||
f50c4407 JS |
306 | if (msg_type == FSCK_FATAL) |
307 | msg_type = FSCK_ERROR; | |
f27d05b1 JS |
308 | else if (msg_type == FSCK_INFO) |
309 | msg_type = FSCK_WARN; | |
f50c4407 | 310 | |
71ab8fa8 JS |
311 | append_msg_id(&sb, msg_id_info[id].id_string); |
312 | ||
c99ba492 JS |
313 | va_start(ap, fmt); |
314 | strbuf_vaddf(&sb, fmt, ap); | |
1cd772cc | 315 | result = options->error_func(options, object, msg_type, sb.buf); |
c99ba492 JS |
316 | strbuf_release(&sb); |
317 | va_end(ap); | |
318 | ||
319 | return result; | |
320 | } | |
321 | ||
7b35efd7 JS |
322 | static char *get_object_name(struct fsck_options *options, struct object *obj) |
323 | { | |
324 | if (!options->object_names) | |
325 | return NULL; | |
326 | return lookup_decoration(options->object_names, obj); | |
327 | } | |
328 | ||
329 | static void put_object_name(struct fsck_options *options, struct object *obj, | |
330 | const char *fmt, ...) | |
331 | { | |
332 | va_list ap; | |
333 | struct strbuf buf = STRBUF_INIT; | |
334 | char *existing; | |
335 | ||
336 | if (!options->object_names) | |
337 | return; | |
338 | existing = lookup_decoration(options->object_names, obj); | |
339 | if (existing) | |
340 | return; | |
341 | va_start(ap, fmt); | |
342 | strbuf_vaddf(&buf, fmt, ap); | |
343 | add_decoration(options->object_names, obj, strbuf_detach(&buf, NULL)); | |
344 | va_end(ap); | |
345 | } | |
346 | ||
90cf590f JS |
347 | static const char *describe_object(struct fsck_options *o, struct object *obj) |
348 | { | |
349 | static struct strbuf buf = STRBUF_INIT; | |
350 | char *name; | |
351 | ||
352 | strbuf_reset(&buf); | |
353 | strbuf_addstr(&buf, oid_to_hex(&obj->oid)); | |
354 | if (o->object_names && (name = lookup_decoration(o->object_names, obj))) | |
355 | strbuf_addf(&buf, " (%s)", name); | |
356 | ||
357 | return buf.buf; | |
358 | } | |
359 | ||
22410549 | 360 | static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *options) |
355885d5 MK |
361 | { |
362 | struct tree_desc desc; | |
363 | struct name_entry entry; | |
364 | int res = 0; | |
7b35efd7 | 365 | const char *name; |
355885d5 MK |
366 | |
367 | if (parse_tree(tree)) | |
368 | return -1; | |
369 | ||
7b35efd7 | 370 | name = get_object_name(options, &tree->object); |
8354fa3d DT |
371 | if (init_tree_desc_gently(&desc, tree->buffer, tree->size)) |
372 | return -1; | |
373 | while (tree_entry_gently(&desc, &entry)) { | |
7b35efd7 | 374 | struct object *obj; |
355885d5 MK |
375 | int result; |
376 | ||
377 | if (S_ISGITLINK(entry.mode)) | |
378 | continue; | |
7b35efd7 JS |
379 | |
380 | if (S_ISDIR(entry.mode)) { | |
2720f6db RS |
381 | obj = (struct object *)lookup_tree(entry.oid); |
382 | if (name && obj) | |
7b35efd7 JS |
383 | put_object_name(options, obj, "%s%s/", name, |
384 | entry.path); | |
385 | result = options->walk(obj, OBJ_TREE, data, options); | |
386 | } | |
387 | else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) { | |
2720f6db RS |
388 | obj = (struct object *)lookup_blob(entry.oid); |
389 | if (name && obj) | |
7b35efd7 JS |
390 | put_object_name(options, obj, "%s%s", name, |
391 | entry.path); | |
392 | result = options->walk(obj, OBJ_BLOB, data, options); | |
393 | } | |
355885d5 | 394 | else { |
82247e9b | 395 | result = error("in tree %s: entry %s has bad mode %.6o", |
90cf590f | 396 | describe_object(options, &tree->object), entry.path, entry.mode); |
355885d5 MK |
397 | } |
398 | if (result < 0) | |
399 | return result; | |
400 | if (!res) | |
401 | res = result; | |
402 | } | |
403 | return res; | |
404 | } | |
405 | ||
22410549 | 406 | static int fsck_walk_commit(struct commit *commit, void *data, struct fsck_options *options) |
355885d5 | 407 | { |
7b35efd7 | 408 | int counter = 0, generation = 0, name_prefix_len = 0; |
355885d5 MK |
409 | struct commit_list *parents; |
410 | int res; | |
411 | int result; | |
7b35efd7 | 412 | const char *name; |
355885d5 MK |
413 | |
414 | if (parse_commit(commit)) | |
415 | return -1; | |
416 | ||
7b35efd7 JS |
417 | name = get_object_name(options, &commit->object); |
418 | if (name) | |
2e27bd77 DS |
419 | put_object_name(options, &get_commit_tree(commit)->object, |
420 | "%s:", name); | |
7b35efd7 | 421 | |
2e27bd77 DS |
422 | result = options->walk((struct object *)get_commit_tree(commit), |
423 | OBJ_TREE, data, options); | |
355885d5 MK |
424 | if (result < 0) |
425 | return result; | |
426 | res = result; | |
427 | ||
428 | parents = commit->parents; | |
7b35efd7 JS |
429 | if (name && parents) { |
430 | int len = strlen(name), power; | |
431 | ||
432 | if (len && name[len - 1] == '^') { | |
433 | generation = 1; | |
434 | name_prefix_len = len - 1; | |
435 | } | |
436 | else { /* parse ~<generation> suffix */ | |
437 | for (generation = 0, power = 1; | |
438 | len && isdigit(name[len - 1]); | |
439 | power *= 10) | |
440 | generation += power * (name[--len] - '0'); | |
441 | if (power > 1 && len && name[len - 1] == '~') | |
442 | name_prefix_len = len - 1; | |
443 | } | |
444 | } | |
445 | ||
355885d5 | 446 | while (parents) { |
7b35efd7 JS |
447 | if (name) { |
448 | struct object *obj = &parents->item->object; | |
449 | ||
450 | if (++counter > 1) | |
451 | put_object_name(options, obj, "%s^%d", | |
452 | name, counter); | |
453 | else if (generation > 0) | |
454 | put_object_name(options, obj, "%.*s~%d", | |
455 | name_prefix_len, name, generation + 1); | |
456 | else | |
457 | put_object_name(options, obj, "%s^", name); | |
458 | } | |
22410549 | 459 | result = options->walk((struct object *)parents->item, OBJ_COMMIT, data, options); |
355885d5 MK |
460 | if (result < 0) |
461 | return result; | |
462 | if (!res) | |
463 | res = result; | |
464 | parents = parents->next; | |
465 | } | |
466 | return res; | |
467 | } | |
468 | ||
22410549 | 469 | static int fsck_walk_tag(struct tag *tag, void *data, struct fsck_options *options) |
355885d5 | 470 | { |
7b35efd7 JS |
471 | char *name = get_object_name(options, &tag->object); |
472 | ||
355885d5 MK |
473 | if (parse_tag(tag)) |
474 | return -1; | |
7b35efd7 JS |
475 | if (name) |
476 | put_object_name(options, tag->tagged, "%s", name); | |
22410549 | 477 | return options->walk(tag->tagged, OBJ_ANY, data, options); |
355885d5 MK |
478 | } |
479 | ||
22410549 | 480 | int fsck_walk(struct object *obj, void *data, struct fsck_options *options) |
355885d5 MK |
481 | { |
482 | if (!obj) | |
483 | return -1; | |
a2b22854 JK |
484 | |
485 | if (obj->type == OBJ_NONE) | |
c251c83d | 486 | parse_object(&obj->oid); |
a2b22854 | 487 | |
355885d5 MK |
488 | switch (obj->type) { |
489 | case OBJ_BLOB: | |
490 | return 0; | |
491 | case OBJ_TREE: | |
22410549 | 492 | return fsck_walk_tree((struct tree *)obj, data, options); |
355885d5 | 493 | case OBJ_COMMIT: |
22410549 | 494 | return fsck_walk_commit((struct commit *)obj, data, options); |
355885d5 | 495 | case OBJ_TAG: |
22410549 | 496 | return fsck_walk_tag((struct tag *)obj, data, options); |
355885d5 | 497 | default: |
90cf590f | 498 | error("Unknown object type for %s", describe_object(options, obj)); |
355885d5 MK |
499 | return -1; |
500 | } | |
501 | } | |
ba002f3b MK |
502 | |
503 | /* | |
504 | * The entries in a tree are ordered in the _path_ order, | |
505 | * which means that a directory entry is ordered by adding | |
506 | * a slash to the end of it. | |
507 | * | |
508 | * So a directory called "a" is ordered _after_ a file | |
509 | * called "a.c", because "a/" sorts after "a.c". | |
510 | */ | |
511 | #define TREE_UNORDERED (-1) | |
512 | #define TREE_HAS_DUPS (-2) | |
513 | ||
514 | static int verify_ordered(unsigned mode1, const char *name1, unsigned mode2, const char *name2) | |
515 | { | |
516 | int len1 = strlen(name1); | |
517 | int len2 = strlen(name2); | |
518 | int len = len1 < len2 ? len1 : len2; | |
519 | unsigned char c1, c2; | |
520 | int cmp; | |
521 | ||
522 | cmp = memcmp(name1, name2, len); | |
523 | if (cmp < 0) | |
524 | return 0; | |
525 | if (cmp > 0) | |
526 | return TREE_UNORDERED; | |
527 | ||
528 | /* | |
529 | * Ok, the first <len> characters are the same. | |
530 | * Now we need to order the next one, but turn | |
531 | * a '\0' into a '/' for a directory entry. | |
532 | */ | |
533 | c1 = name1[len]; | |
534 | c2 = name2[len]; | |
535 | if (!c1 && !c2) | |
536 | /* | |
537 | * git-write-tree used to write out a nonsense tree that has | |
538 | * entries with the same name, one blob and one tree. Make | |
539 | * sure we do not have duplicate entries. | |
540 | */ | |
541 | return TREE_HAS_DUPS; | |
542 | if (!c1 && S_ISDIR(mode1)) | |
543 | c1 = '/'; | |
544 | if (!c2 && S_ISDIR(mode2)) | |
545 | c2 = '/'; | |
546 | return c1 < c2 ? 0 : TREE_UNORDERED; | |
547 | } | |
548 | ||
22410549 | 549 | static int fsck_tree(struct tree *item, struct fsck_options *options) |
ba002f3b | 550 | { |
8354fa3d | 551 | int retval = 0; |
c479d14a | 552 | int has_null_sha1 = 0; |
ba002f3b MK |
553 | int has_full_path = 0; |
554 | int has_empty_name = 0; | |
5d34a435 JK |
555 | int has_dot = 0; |
556 | int has_dotdot = 0; | |
5c17f512 | 557 | int has_dotgit = 0; |
ba002f3b MK |
558 | int has_zero_pad = 0; |
559 | int has_bad_modes = 0; | |
560 | int has_dup_entries = 0; | |
561 | int not_properly_sorted = 0; | |
562 | struct tree_desc desc; | |
563 | unsigned o_mode; | |
564 | const char *o_name; | |
ba002f3b | 565 | |
8354fa3d DT |
566 | if (init_tree_desc_gently(&desc, item->buffer, item->size)) { |
567 | retval += report(options, &item->object, FSCK_MSG_BAD_TREE, "cannot be parsed as a tree"); | |
568 | return retval; | |
569 | } | |
ba002f3b MK |
570 | |
571 | o_mode = 0; | |
572 | o_name = NULL; | |
ba002f3b MK |
573 | |
574 | while (desc.size) { | |
575 | unsigned mode; | |
576 | const char *name; | |
ce6663a9 | 577 | const struct object_id *oid; |
ba002f3b | 578 | |
ce6663a9 | 579 | oid = tree_entry_extract(&desc, &name, &mode); |
ba002f3b | 580 | |
ce6663a9 | 581 | has_null_sha1 |= is_null_oid(oid); |
effd12ec HS |
582 | has_full_path |= !!strchr(name, '/'); |
583 | has_empty_name |= !*name; | |
584 | has_dot |= !strcmp(name, "."); | |
585 | has_dotdot |= !strcmp(name, ".."); | |
5e519fb8 JH |
586 | has_dotgit |= (!strcmp(name, ".git") || |
587 | is_hfs_dotgit(name) || | |
588 | is_ntfs_dotgit(name)); | |
ba002f3b | 589 | has_zero_pad |= *(char *)desc.buffer == '0'; |
8354fa3d DT |
590 | if (update_tree_entry_gently(&desc)) { |
591 | retval += report(options, &item->object, FSCK_MSG_BAD_TREE, "cannot be parsed as a tree"); | |
592 | break; | |
593 | } | |
ba002f3b MK |
594 | |
595 | switch (mode) { | |
596 | /* | |
597 | * Standard modes.. | |
598 | */ | |
599 | case S_IFREG | 0755: | |
600 | case S_IFREG | 0644: | |
601 | case S_IFLNK: | |
602 | case S_IFDIR: | |
603 | case S_IFGITLINK: | |
604 | break; | |
605 | /* | |
606 | * This is nonstandard, but we had a few of these | |
607 | * early on when we honored the full set of mode | |
608 | * bits.. | |
609 | */ | |
610 | case S_IFREG | 0664: | |
22410549 | 611 | if (!options->strict) |
ba002f3b | 612 | break; |
1cf01a34 | 613 | /* fallthrough */ |
ba002f3b MK |
614 | default: |
615 | has_bad_modes = 1; | |
616 | } | |
617 | ||
618 | if (o_name) { | |
619 | switch (verify_ordered(o_mode, o_name, mode, name)) { | |
620 | case TREE_UNORDERED: | |
621 | not_properly_sorted = 1; | |
622 | break; | |
623 | case TREE_HAS_DUPS: | |
624 | has_dup_entries = 1; | |
625 | break; | |
626 | default: | |
627 | break; | |
628 | } | |
629 | } | |
630 | ||
631 | o_mode = mode; | |
632 | o_name = name; | |
ba002f3b MK |
633 | } |
634 | ||
c479d14a | 635 | if (has_null_sha1) |
c99ba492 | 636 | retval += report(options, &item->object, FSCK_MSG_NULL_SHA1, "contains entries pointing to null sha1"); |
ba002f3b | 637 | if (has_full_path) |
c99ba492 | 638 | retval += report(options, &item->object, FSCK_MSG_FULL_PATHNAME, "contains full pathnames"); |
ba002f3b | 639 | if (has_empty_name) |
c99ba492 | 640 | retval += report(options, &item->object, FSCK_MSG_EMPTY_NAME, "contains empty pathname"); |
5d34a435 | 641 | if (has_dot) |
c99ba492 | 642 | retval += report(options, &item->object, FSCK_MSG_HAS_DOT, "contains '.'"); |
5d34a435 | 643 | if (has_dotdot) |
c99ba492 | 644 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTDOT, "contains '..'"); |
5c17f512 | 645 | if (has_dotgit) |
c99ba492 | 646 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTGIT, "contains '.git'"); |
ba002f3b | 647 | if (has_zero_pad) |
c99ba492 | 648 | retval += report(options, &item->object, FSCK_MSG_ZERO_PADDED_FILEMODE, "contains zero-padded file modes"); |
ba002f3b | 649 | if (has_bad_modes) |
c99ba492 | 650 | retval += report(options, &item->object, FSCK_MSG_BAD_FILEMODE, "contains bad file modes"); |
ba002f3b | 651 | if (has_dup_entries) |
c99ba492 | 652 | retval += report(options, &item->object, FSCK_MSG_DUPLICATE_ENTRIES, "contains duplicate file entries"); |
ba002f3b | 653 | if (not_properly_sorted) |
c99ba492 | 654 | retval += report(options, &item->object, FSCK_MSG_TREE_NOT_SORTED, "not properly sorted"); |
ba002f3b MK |
655 | return retval; |
656 | } | |
657 | ||
84d18c0b | 658 | static int verify_headers(const void *data, unsigned long size, |
b2f44feb | 659 | struct object *obj, struct fsck_options *options) |
4d0d8975 JS |
660 | { |
661 | const char *buffer = (const char *)data; | |
662 | unsigned long i; | |
663 | ||
664 | for (i = 0; i < size; i++) { | |
665 | switch (buffer[i]) { | |
666 | case '\0': | |
c99ba492 JS |
667 | return report(options, obj, |
668 | FSCK_MSG_NUL_IN_HEADER, | |
669 | "unterminated header: NUL at offset %ld", i); | |
4d0d8975 JS |
670 | case '\n': |
671 | if (i + 1 < size && buffer[i + 1] == '\n') | |
672 | return 0; | |
673 | } | |
674 | } | |
675 | ||
84d18c0b JH |
676 | /* |
677 | * We did not find double-LF that separates the header | |
678 | * and the body. Not having a body is not a crime but | |
679 | * we do want to see the terminating LF for the last header | |
680 | * line. | |
681 | */ | |
682 | if (size && buffer[size - 1] == '\n') | |
683 | return 0; | |
684 | ||
c99ba492 JS |
685 | return report(options, obj, |
686 | FSCK_MSG_UNTERMINATED_HEADER, "unterminated header"); | |
4d0d8975 JS |
687 | } |
688 | ||
22410549 | 689 | static int fsck_ident(const char **ident, struct object *obj, struct fsck_options *options) |
daae1922 | 690 | { |
e6826e33 | 691 | const char *p = *ident; |
d4b8de04 JK |
692 | char *end; |
693 | ||
e6826e33 JS |
694 | *ident = strchrnul(*ident, '\n'); |
695 | if (**ident == '\n') | |
696 | (*ident)++; | |
697 | ||
698 | if (*p == '<') | |
c99ba492 | 699 | return report(options, obj, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
700 | p += strcspn(p, "<>\n"); |
701 | if (*p == '>') | |
c99ba492 | 702 | return report(options, obj, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name"); |
e6826e33 | 703 | if (*p != '<') |
c99ba492 | 704 | return report(options, obj, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email"); |
e6826e33 | 705 | if (p[-1] != ' ') |
c99ba492 | 706 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
707 | p++; |
708 | p += strcspn(p, "<>\n"); | |
709 | if (*p != '>') | |
c99ba492 | 710 | return report(options, obj, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email"); |
e6826e33 JS |
711 | p++; |
712 | if (*p != ' ') | |
c99ba492 | 713 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date"); |
e6826e33 JS |
714 | p++; |
715 | if (*p == '0' && p[1] != ' ') | |
c99ba492 | 716 | return report(options, obj, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date"); |
1aeb7e75 | 717 | if (date_overflows(parse_timestamp(p, &end, 10))) |
c99ba492 | 718 | return report(options, obj, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow"); |
e6826e33 | 719 | if ((end == p || *end != ' ')) |
c99ba492 | 720 | return report(options, obj, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date"); |
e6826e33 JS |
721 | p = end + 1; |
722 | if ((*p != '+' && *p != '-') || | |
723 | !isdigit(p[1]) || | |
724 | !isdigit(p[2]) || | |
725 | !isdigit(p[3]) || | |
726 | !isdigit(p[4]) || | |
727 | (p[5] != '\n')) | |
c99ba492 | 728 | return report(options, obj, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone"); |
e6826e33 | 729 | p += 6; |
daae1922 JN |
730 | return 0; |
731 | } | |
732 | ||
bc6b8fc1 | 733 | static int fsck_commit_buffer(struct commit *commit, const char *buffer, |
22410549 | 734 | unsigned long size, struct fsck_options *options) |
ba002f3b | 735 | { |
ba002f3b MK |
736 | unsigned char tree_sha1[20], sha1[20]; |
737 | struct commit_graft *graft; | |
c9ad147f | 738 | unsigned parent_count, parent_line_count = 0, author_count; |
daae1922 | 739 | int err; |
6d2d780f | 740 | const char *buffer_begin = buffer; |
ba002f3b | 741 | |
b2f44feb | 742 | if (verify_headers(buffer, size, &commit->object, options)) |
4d0d8975 JS |
743 | return -1; |
744 | ||
cf4fff57 | 745 | if (!skip_prefix(buffer, "tree ", &buffer)) |
c99ba492 | 746 | return report(options, &commit->object, FSCK_MSG_MISSING_TREE, "invalid format - expected 'tree' line"); |
b3584761 JS |
747 | if (get_sha1_hex(buffer, tree_sha1) || buffer[40] != '\n') { |
748 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE_SHA1, "invalid 'tree' line format - bad sha1"); | |
749 | if (err) | |
750 | return err; | |
751 | } | |
2d820a61 | 752 | buffer += 41; |
cf4fff57 | 753 | while (skip_prefix(buffer, "parent ", &buffer)) { |
b3584761 JS |
754 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { |
755 | err = report(options, &commit->object, FSCK_MSG_BAD_PARENT_SHA1, "invalid 'parent' line format - bad sha1"); | |
756 | if (err) | |
757 | return err; | |
758 | } | |
2d820a61 | 759 | buffer += 41; |
9d02150c | 760 | parent_line_count++; |
ba002f3b | 761 | } |
8b65a34c | 762 | graft = lookup_commit_graft(&commit->object.oid); |
9d02150c | 763 | parent_count = commit_list_count(commit->parents); |
ba002f3b | 764 | if (graft) { |
9d02150c | 765 | if (graft->nr_parent == -1 && !parent_count) |
ba002f3b | 766 | ; /* shallow commit */ |
b3584761 JS |
767 | else if (graft->nr_parent != parent_count) { |
768 | err = report(options, &commit->object, FSCK_MSG_MISSING_GRAFT, "graft objects missing"); | |
769 | if (err) | |
770 | return err; | |
771 | } | |
ba002f3b | 772 | } else { |
b3584761 JS |
773 | if (parent_count != parent_line_count) { |
774 | err = report(options, &commit->object, FSCK_MSG_MISSING_PARENT, "parent objects missing"); | |
775 | if (err) | |
776 | return err; | |
777 | } | |
ba002f3b | 778 | } |
c9ad147f JS |
779 | author_count = 0; |
780 | while (skip_prefix(buffer, "author ", &buffer)) { | |
781 | author_count++; | |
782 | err = fsck_ident(&buffer, &commit->object, options); | |
783 | if (err) | |
784 | return err; | |
ba002f3b | 785 | } |
c9ad147f JS |
786 | if (author_count < 1) |
787 | err = report(options, &commit->object, FSCK_MSG_MISSING_AUTHOR, "invalid format - expected 'author' line"); | |
788 | else if (author_count > 1) | |
789 | err = report(options, &commit->object, FSCK_MSG_MULTIPLE_AUTHORS, "invalid format - multiple 'author' lines"); | |
daae1922 JN |
790 | if (err) |
791 | return err; | |
cf4fff57 | 792 | if (!skip_prefix(buffer, "committer ", &buffer)) |
c99ba492 | 793 | return report(options, &commit->object, FSCK_MSG_MISSING_COMMITTER, "invalid format - expected 'committer' line"); |
22410549 | 794 | err = fsck_ident(&buffer, &commit->object, options); |
daae1922 JN |
795 | if (err) |
796 | return err; | |
2e27bd77 | 797 | if (!get_commit_tree(commit)) { |
5af29718 JH |
798 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE, "could not load commit's tree %s", sha1_to_hex(tree_sha1)); |
799 | if (err) | |
800 | return err; | |
801 | } | |
6d2d780f JH |
802 | if (memchr(buffer_begin, '\0', size)) { |
803 | err = report(options, &commit->object, FSCK_MSG_NUL_IN_COMMIT, | |
804 | "NUL byte in the commit object body"); | |
805 | if (err) | |
806 | return err; | |
807 | } | |
ba002f3b MK |
808 | return 0; |
809 | } | |
810 | ||
90a398bb | 811 | static int fsck_commit(struct commit *commit, const char *data, |
22410549 | 812 | unsigned long size, struct fsck_options *options) |
bc6b8fc1 | 813 | { |
90a398bb | 814 | const char *buffer = data ? data : get_commit_buffer(commit, &size); |
22410549 | 815 | int ret = fsck_commit_buffer(commit, buffer, size, options); |
90a398bb JS |
816 | if (!data) |
817 | unuse_commit_buffer(commit, buffer); | |
bc6b8fc1 JK |
818 | return ret; |
819 | } | |
820 | ||
cec097be | 821 | static int fsck_tag_buffer(struct tag *tag, const char *data, |
22410549 | 822 | unsigned long size, struct fsck_options *options) |
cec097be JS |
823 | { |
824 | unsigned char sha1[20]; | |
825 | int ret = 0; | |
826 | const char *buffer; | |
827 | char *to_free = NULL, *eol; | |
828 | struct strbuf sb = STRBUF_INIT; | |
829 | ||
830 | if (data) | |
831 | buffer = data; | |
832 | else { | |
833 | enum object_type type; | |
834 | ||
835 | buffer = to_free = | |
b4f5aca4 | 836 | read_object_file(&tag->object.oid, &type, &size); |
cec097be | 837 | if (!buffer) |
c99ba492 JS |
838 | return report(options, &tag->object, |
839 | FSCK_MSG_MISSING_TAG_OBJECT, | |
cec097be JS |
840 | "cannot read tag object"); |
841 | ||
842 | if (type != OBJ_TAG) { | |
c99ba492 JS |
843 | ret = report(options, &tag->object, |
844 | FSCK_MSG_TAG_OBJECT_NOT_TAG, | |
cec097be | 845 | "expected tag got %s", |
debca9d2 | 846 | type_name(type)); |
cec097be JS |
847 | goto done; |
848 | } | |
849 | } | |
850 | ||
8a272f29 RS |
851 | ret = verify_headers(buffer, size, &tag->object, options); |
852 | if (ret) | |
cec097be JS |
853 | goto done; |
854 | ||
855 | if (!skip_prefix(buffer, "object ", &buffer)) { | |
c99ba492 | 856 | ret = report(options, &tag->object, FSCK_MSG_MISSING_OBJECT, "invalid format - expected 'object' line"); |
cec097be JS |
857 | goto done; |
858 | } | |
859 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { | |
c99ba492 | 860 | ret = report(options, &tag->object, FSCK_MSG_BAD_OBJECT_SHA1, "invalid 'object' line format - bad sha1"); |
7d7d5b05 JS |
861 | if (ret) |
862 | goto done; | |
cec097be JS |
863 | } |
864 | buffer += 41; | |
865 | ||
866 | if (!skip_prefix(buffer, "type ", &buffer)) { | |
c99ba492 | 867 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE_ENTRY, "invalid format - expected 'type' line"); |
cec097be JS |
868 | goto done; |
869 | } | |
870 | eol = strchr(buffer, '\n'); | |
871 | if (!eol) { | |
c99ba492 | 872 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
873 | goto done; |
874 | } | |
875 | if (type_from_string_gently(buffer, eol - buffer, 1) < 0) | |
c99ba492 | 876 | ret = report(options, &tag->object, 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)) { | |
c99ba492 | 882 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG_ENTRY, "invalid format - expected 'tag' line"); |
cec097be JS |
883 | goto done; |
884 | } | |
885 | eol = strchr(buffer, '\n'); | |
886 | if (!eol) { | |
c99ba492 | 887 | ret = report(options, &tag->object, 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 JS |
891 | if (check_refname_format(sb.buf, 0)) { |
892 | ret = report(options, &tag->object, FSCK_MSG_BAD_TAG_NAME, | |
c99ba492 | 893 | "invalid 'tag' name: %.*s", |
7add4419 | 894 | (int)(eol - buffer), buffer); |
f27d05b1 JS |
895 | if (ret) |
896 | goto done; | |
897 | } | |
cec097be JS |
898 | buffer = eol + 1; |
899 | ||
f27d05b1 | 900 | if (!skip_prefix(buffer, "tagger ", &buffer)) { |
cec097be | 901 | /* early tags do not contain 'tagger' lines; warn only */ |
f27d05b1 JS |
902 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAGGER_ENTRY, "invalid format - expected 'tagger' line"); |
903 | if (ret) | |
904 | goto done; | |
905 | } | |
cec097be | 906 | else |
22410549 | 907 | ret = fsck_ident(&buffer, &tag->object, options); |
cec097be JS |
908 | |
909 | done: | |
910 | strbuf_release(&sb); | |
911 | free(to_free); | |
912 | return ret; | |
913 | } | |
914 | ||
90a398bb | 915 | static int fsck_tag(struct tag *tag, const char *data, |
22410549 | 916 | unsigned long size, struct fsck_options *options) |
ba002f3b MK |
917 | { |
918 | struct object *tagged = tag->tagged; | |
919 | ||
920 | if (!tagged) | |
c99ba492 | 921 | return report(options, &tag->object, FSCK_MSG_BAD_TAG_OBJECT, "could not load tagged object"); |
cec097be | 922 | |
22410549 | 923 | return fsck_tag_buffer(tag, data, size, options); |
ba002f3b MK |
924 | } |
925 | ||
90a398bb | 926 | int fsck_object(struct object *obj, void *data, unsigned long size, |
22410549 | 927 | struct fsck_options *options) |
ba002f3b MK |
928 | { |
929 | if (!obj) | |
c99ba492 | 930 | return report(options, obj, FSCK_MSG_BAD_OBJECT_SHA1, "no valid object to fsck"); |
ba002f3b MK |
931 | |
932 | if (obj->type == OBJ_BLOB) | |
933 | return 0; | |
934 | if (obj->type == OBJ_TREE) | |
22410549 | 935 | return fsck_tree((struct tree *) obj, options); |
ba002f3b | 936 | if (obj->type == OBJ_COMMIT) |
90a398bb | 937 | return fsck_commit((struct commit *) obj, (const char *) data, |
22410549 | 938 | size, options); |
ba002f3b | 939 | if (obj->type == OBJ_TAG) |
90a398bb | 940 | return fsck_tag((struct tag *) obj, (const char *) data, |
22410549 | 941 | size, options); |
ba002f3b | 942 | |
c99ba492 | 943 | return report(options, obj, FSCK_MSG_UNKNOWN_TYPE, "unknown type '%d' (internal fsck error)", |
ba002f3b MK |
944 | obj->type); |
945 | } | |
d6ffc8d7 | 946 | |
1cd772cc JS |
947 | int fsck_error_function(struct fsck_options *o, |
948 | struct object *obj, int msg_type, const char *message) | |
d6ffc8d7 | 949 | { |
0282f4dc | 950 | if (msg_type == FSCK_WARN) { |
90cf590f | 951 | warning("object %s: %s", describe_object(o, obj), message); |
0282f4dc JS |
952 | return 0; |
953 | } | |
90cf590f | 954 | error("object %s: %s", describe_object(o, obj), message); |
d6ffc8d7 MK |
955 | return 1; |
956 | } |