]>
Commit | Line | Data |
---|---|---|
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" |
355885d5 | 11 | |
f50c4407 JS |
12 | #define FSCK_FATAL -1 |
13 | ||
c99ba492 | 14 | #define FOREACH_MSG_ID(FUNC) \ |
f50c4407 JS |
15 | /* fatal errors */ \ |
16 | FUNC(NUL_IN_HEADER, FATAL) \ | |
17 | FUNC(UNTERMINATED_HEADER, FATAL) \ | |
c99ba492 JS |
18 | /* errors */ \ |
19 | FUNC(BAD_DATE, ERROR) \ | |
20 | FUNC(BAD_DATE_OVERFLOW, ERROR) \ | |
21 | FUNC(BAD_EMAIL, ERROR) \ | |
22 | FUNC(BAD_NAME, ERROR) \ | |
23 | FUNC(BAD_OBJECT_SHA1, ERROR) \ | |
24 | FUNC(BAD_PARENT_SHA1, ERROR) \ | |
25 | FUNC(BAD_TAG_OBJECT, ERROR) \ | |
26 | FUNC(BAD_TIMEZONE, ERROR) \ | |
27 | FUNC(BAD_TREE, ERROR) \ | |
28 | FUNC(BAD_TREE_SHA1, ERROR) \ | |
29 | FUNC(BAD_TYPE, ERROR) \ | |
30 | FUNC(DUPLICATE_ENTRIES, ERROR) \ | |
31 | FUNC(MISSING_AUTHOR, ERROR) \ | |
32 | FUNC(MISSING_COMMITTER, ERROR) \ | |
33 | FUNC(MISSING_EMAIL, ERROR) \ | |
34 | FUNC(MISSING_GRAFT, ERROR) \ | |
35 | FUNC(MISSING_NAME_BEFORE_EMAIL, ERROR) \ | |
36 | FUNC(MISSING_OBJECT, ERROR) \ | |
37 | FUNC(MISSING_PARENT, ERROR) \ | |
38 | FUNC(MISSING_SPACE_BEFORE_DATE, ERROR) \ | |
39 | FUNC(MISSING_SPACE_BEFORE_EMAIL, ERROR) \ | |
40 | FUNC(MISSING_TAG, ERROR) \ | |
41 | FUNC(MISSING_TAG_ENTRY, ERROR) \ | |
42 | FUNC(MISSING_TAG_OBJECT, ERROR) \ | |
43 | FUNC(MISSING_TREE, ERROR) \ | |
44 | FUNC(MISSING_TYPE, ERROR) \ | |
45 | FUNC(MISSING_TYPE_ENTRY, ERROR) \ | |
c9ad147f | 46 | FUNC(MULTIPLE_AUTHORS, ERROR) \ |
c99ba492 JS |
47 | FUNC(TAG_OBJECT_NOT_TAG, ERROR) \ |
48 | FUNC(TREE_NOT_SORTED, ERROR) \ | |
49 | FUNC(UNKNOWN_TYPE, ERROR) \ | |
c99ba492 JS |
50 | FUNC(ZERO_PADDED_DATE, ERROR) \ |
51 | /* warnings */ \ | |
52 | FUNC(BAD_FILEMODE, WARN) \ | |
53 | FUNC(BAD_TAG_NAME, WARN) \ | |
54 | FUNC(EMPTY_NAME, WARN) \ | |
55 | FUNC(FULL_PATHNAME, WARN) \ | |
56 | FUNC(HAS_DOT, WARN) \ | |
57 | FUNC(HAS_DOTDOT, WARN) \ | |
58 | FUNC(HAS_DOTGIT, WARN) \ | |
59 | FUNC(MISSING_TAGGER_ENTRY, WARN) \ | |
60 | FUNC(NULL_SHA1, WARN) \ | |
61 | FUNC(ZERO_PADDED_FILEMODE, WARN) | |
62 | ||
63 | #define MSG_ID(id, msg_type) FSCK_MSG_##id, | |
64 | enum fsck_msg_id { | |
65 | FOREACH_MSG_ID(MSG_ID) | |
66 | FSCK_MSG_MAX | |
67 | }; | |
68 | #undef MSG_ID | |
69 | ||
f417eed8 JS |
70 | #define STR(x) #x |
71 | #define MSG_ID(id, msg_type) { STR(id), NULL, FSCK_##msg_type }, | |
c99ba492 | 72 | static struct { |
f417eed8 JS |
73 | const char *id_string; |
74 | const char *downcased; | |
c99ba492 JS |
75 | int msg_type; |
76 | } msg_id_info[FSCK_MSG_MAX + 1] = { | |
77 | FOREACH_MSG_ID(MSG_ID) | |
f417eed8 | 78 | { NULL, NULL, -1 } |
c99ba492 JS |
79 | }; |
80 | #undef MSG_ID | |
81 | ||
f417eed8 JS |
82 | static int parse_msg_id(const char *text) |
83 | { | |
84 | int i; | |
85 | ||
86 | if (!msg_id_info[0].downcased) { | |
87 | /* convert id_string to lower case, without underscores. */ | |
88 | for (i = 0; i < FSCK_MSG_MAX; i++) { | |
89 | const char *p = msg_id_info[i].id_string; | |
90 | int len = strlen(p); | |
91 | char *q = xmalloc(len); | |
92 | ||
93 | msg_id_info[i].downcased = q; | |
94 | while (*p) | |
95 | if (*p == '_') | |
96 | p++; | |
97 | else | |
98 | *(q)++ = tolower(*(p)++); | |
99 | *q = '\0'; | |
100 | } | |
101 | } | |
102 | ||
103 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
104 | if (!strcmp(text, msg_id_info[i].downcased)) | |
105 | return i; | |
106 | ||
107 | return -1; | |
108 | } | |
109 | ||
c99ba492 JS |
110 | static int fsck_msg_type(enum fsck_msg_id msg_id, |
111 | struct fsck_options *options) | |
112 | { | |
113 | int msg_type; | |
114 | ||
0282f4dc JS |
115 | assert(msg_id >= 0 && msg_id < FSCK_MSG_MAX); |
116 | ||
117 | if (options->msg_type) | |
118 | msg_type = options->msg_type[msg_id]; | |
119 | else { | |
120 | msg_type = msg_id_info[msg_id].msg_type; | |
121 | if (options->strict && msg_type == FSCK_WARN) | |
122 | msg_type = FSCK_ERROR; | |
123 | } | |
c99ba492 JS |
124 | |
125 | return msg_type; | |
126 | } | |
127 | ||
0282f4dc JS |
128 | static int parse_msg_type(const char *str) |
129 | { | |
130 | if (!strcmp(str, "error")) | |
131 | return FSCK_ERROR; | |
132 | else if (!strcmp(str, "warn")) | |
133 | return FSCK_WARN; | |
134 | else | |
135 | die("Unknown fsck message type: '%s'", str); | |
136 | } | |
137 | ||
5d477a33 JS |
138 | int is_valid_msg_type(const char *msg_id, const char *msg_type) |
139 | { | |
140 | if (parse_msg_id(msg_id) < 0) | |
141 | return 0; | |
142 | parse_msg_type(msg_type); | |
143 | return 1; | |
144 | } | |
145 | ||
0282f4dc JS |
146 | void fsck_set_msg_type(struct fsck_options *options, |
147 | const char *msg_id, const char *msg_type) | |
148 | { | |
149 | int id = parse_msg_id(msg_id), type; | |
150 | ||
151 | if (id < 0) | |
152 | die("Unhandled message id: %s", msg_id); | |
153 | type = parse_msg_type(msg_type); | |
154 | ||
f50c4407 JS |
155 | if (type != FSCK_ERROR && msg_id_info[id].msg_type == FSCK_FATAL) |
156 | die("Cannot demote %s to %s", msg_id, msg_type); | |
157 | ||
0282f4dc JS |
158 | if (!options->msg_type) { |
159 | int i; | |
160 | int *msg_type = xmalloc(sizeof(int) * FSCK_MSG_MAX); | |
161 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
162 | msg_type[i] = fsck_msg_type(i, options); | |
163 | options->msg_type = msg_type; | |
164 | } | |
165 | ||
166 | options->msg_type[id] = type; | |
167 | } | |
168 | ||
169 | void fsck_set_msg_types(struct fsck_options *options, const char *values) | |
170 | { | |
171 | char *buf = xstrdup(values), *to_free = buf; | |
172 | int done = 0; | |
173 | ||
174 | while (!done) { | |
175 | int len = strcspn(buf, " ,|"), equal; | |
176 | ||
177 | done = !buf[len]; | |
178 | if (!len) { | |
179 | buf++; | |
180 | continue; | |
181 | } | |
182 | buf[len] = '\0'; | |
183 | ||
184 | for (equal = 0; | |
185 | equal < len && buf[equal] != '=' && buf[equal] != ':'; | |
186 | equal++) | |
187 | buf[equal] = tolower(buf[equal]); | |
188 | buf[equal] = '\0'; | |
189 | ||
190 | if (equal == len) | |
191 | die("Missing '=': '%s'", buf); | |
192 | ||
193 | fsck_set_msg_type(options, buf, buf + equal + 1); | |
194 | buf += len + 1; | |
195 | } | |
196 | free(to_free); | |
197 | } | |
198 | ||
71ab8fa8 JS |
199 | static void append_msg_id(struct strbuf *sb, const char *msg_id) |
200 | { | |
201 | for (;;) { | |
202 | char c = *(msg_id)++; | |
203 | ||
204 | if (!c) | |
205 | break; | |
206 | if (c != '_') | |
207 | strbuf_addch(sb, tolower(c)); | |
208 | else { | |
209 | assert(*msg_id); | |
210 | strbuf_addch(sb, *(msg_id)++); | |
211 | } | |
212 | } | |
213 | ||
214 | strbuf_addstr(sb, ": "); | |
215 | } | |
216 | ||
c99ba492 JS |
217 | __attribute__((format (printf, 4, 5))) |
218 | static int report(struct fsck_options *options, struct object *object, | |
219 | enum fsck_msg_id id, const char *fmt, ...) | |
220 | { | |
221 | va_list ap; | |
222 | struct strbuf sb = STRBUF_INIT; | |
223 | int msg_type = fsck_msg_type(id, options), result; | |
224 | ||
f50c4407 JS |
225 | if (msg_type == FSCK_FATAL) |
226 | msg_type = FSCK_ERROR; | |
227 | ||
71ab8fa8 JS |
228 | append_msg_id(&sb, msg_id_info[id].id_string); |
229 | ||
c99ba492 JS |
230 | va_start(ap, fmt); |
231 | strbuf_vaddf(&sb, fmt, ap); | |
232 | result = options->error_func(object, msg_type, sb.buf); | |
233 | strbuf_release(&sb); | |
234 | va_end(ap); | |
235 | ||
236 | return result; | |
237 | } | |
238 | ||
22410549 | 239 | static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *options) |
355885d5 MK |
240 | { |
241 | struct tree_desc desc; | |
242 | struct name_entry entry; | |
243 | int res = 0; | |
244 | ||
245 | if (parse_tree(tree)) | |
246 | return -1; | |
247 | ||
248 | init_tree_desc(&desc, tree->buffer, tree->size); | |
249 | while (tree_entry(&desc, &entry)) { | |
250 | int result; | |
251 | ||
252 | if (S_ISGITLINK(entry.mode)) | |
253 | continue; | |
254 | if (S_ISDIR(entry.mode)) | |
22410549 | 255 | result = options->walk(&lookup_tree(entry.sha1)->object, OBJ_TREE, data, options); |
355885d5 | 256 | else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) |
22410549 | 257 | result = options->walk(&lookup_blob(entry.sha1)->object, OBJ_BLOB, data, options); |
355885d5 | 258 | else { |
82247e9b | 259 | result = error("in tree %s: entry %s has bad mode %.6o", |
355885d5 MK |
260 | sha1_to_hex(tree->object.sha1), entry.path, entry.mode); |
261 | } | |
262 | if (result < 0) | |
263 | return result; | |
264 | if (!res) | |
265 | res = result; | |
266 | } | |
267 | return res; | |
268 | } | |
269 | ||
22410549 | 270 | static int fsck_walk_commit(struct commit *commit, void *data, struct fsck_options *options) |
355885d5 MK |
271 | { |
272 | struct commit_list *parents; | |
273 | int res; | |
274 | int result; | |
275 | ||
276 | if (parse_commit(commit)) | |
277 | return -1; | |
278 | ||
22410549 | 279 | result = options->walk((struct object *)commit->tree, OBJ_TREE, data, options); |
355885d5 MK |
280 | if (result < 0) |
281 | return result; | |
282 | res = result; | |
283 | ||
284 | parents = commit->parents; | |
285 | while (parents) { | |
22410549 | 286 | result = options->walk((struct object *)parents->item, OBJ_COMMIT, data, options); |
355885d5 MK |
287 | if (result < 0) |
288 | return result; | |
289 | if (!res) | |
290 | res = result; | |
291 | parents = parents->next; | |
292 | } | |
293 | return res; | |
294 | } | |
295 | ||
22410549 | 296 | static int fsck_walk_tag(struct tag *tag, void *data, struct fsck_options *options) |
355885d5 MK |
297 | { |
298 | if (parse_tag(tag)) | |
299 | return -1; | |
22410549 | 300 | return options->walk(tag->tagged, OBJ_ANY, data, options); |
355885d5 MK |
301 | } |
302 | ||
22410549 | 303 | int fsck_walk(struct object *obj, void *data, struct fsck_options *options) |
355885d5 MK |
304 | { |
305 | if (!obj) | |
306 | return -1; | |
307 | switch (obj->type) { | |
308 | case OBJ_BLOB: | |
309 | return 0; | |
310 | case OBJ_TREE: | |
22410549 | 311 | return fsck_walk_tree((struct tree *)obj, data, options); |
355885d5 | 312 | case OBJ_COMMIT: |
22410549 | 313 | return fsck_walk_commit((struct commit *)obj, data, options); |
355885d5 | 314 | case OBJ_TAG: |
22410549 | 315 | return fsck_walk_tag((struct tag *)obj, data, options); |
355885d5 MK |
316 | default: |
317 | error("Unknown object type for %s", sha1_to_hex(obj->sha1)); | |
318 | return -1; | |
319 | } | |
320 | } | |
ba002f3b MK |
321 | |
322 | /* | |
323 | * The entries in a tree are ordered in the _path_ order, | |
324 | * which means that a directory entry is ordered by adding | |
325 | * a slash to the end of it. | |
326 | * | |
327 | * So a directory called "a" is ordered _after_ a file | |
328 | * called "a.c", because "a/" sorts after "a.c". | |
329 | */ | |
330 | #define TREE_UNORDERED (-1) | |
331 | #define TREE_HAS_DUPS (-2) | |
332 | ||
333 | static int verify_ordered(unsigned mode1, const char *name1, unsigned mode2, const char *name2) | |
334 | { | |
335 | int len1 = strlen(name1); | |
336 | int len2 = strlen(name2); | |
337 | int len = len1 < len2 ? len1 : len2; | |
338 | unsigned char c1, c2; | |
339 | int cmp; | |
340 | ||
341 | cmp = memcmp(name1, name2, len); | |
342 | if (cmp < 0) | |
343 | return 0; | |
344 | if (cmp > 0) | |
345 | return TREE_UNORDERED; | |
346 | ||
347 | /* | |
348 | * Ok, the first <len> characters are the same. | |
349 | * Now we need to order the next one, but turn | |
350 | * a '\0' into a '/' for a directory entry. | |
351 | */ | |
352 | c1 = name1[len]; | |
353 | c2 = name2[len]; | |
354 | if (!c1 && !c2) | |
355 | /* | |
356 | * git-write-tree used to write out a nonsense tree that has | |
357 | * entries with the same name, one blob and one tree. Make | |
358 | * sure we do not have duplicate entries. | |
359 | */ | |
360 | return TREE_HAS_DUPS; | |
361 | if (!c1 && S_ISDIR(mode1)) | |
362 | c1 = '/'; | |
363 | if (!c2 && S_ISDIR(mode2)) | |
364 | c2 = '/'; | |
365 | return c1 < c2 ? 0 : TREE_UNORDERED; | |
366 | } | |
367 | ||
22410549 | 368 | static int fsck_tree(struct tree *item, struct fsck_options *options) |
ba002f3b MK |
369 | { |
370 | int retval; | |
c479d14a | 371 | int has_null_sha1 = 0; |
ba002f3b MK |
372 | int has_full_path = 0; |
373 | int has_empty_name = 0; | |
5d34a435 JK |
374 | int has_dot = 0; |
375 | int has_dotdot = 0; | |
5c17f512 | 376 | int has_dotgit = 0; |
ba002f3b MK |
377 | int has_zero_pad = 0; |
378 | int has_bad_modes = 0; | |
379 | int has_dup_entries = 0; | |
380 | int not_properly_sorted = 0; | |
381 | struct tree_desc desc; | |
382 | unsigned o_mode; | |
383 | const char *o_name; | |
ba002f3b MK |
384 | |
385 | init_tree_desc(&desc, item->buffer, item->size); | |
386 | ||
387 | o_mode = 0; | |
388 | o_name = NULL; | |
ba002f3b MK |
389 | |
390 | while (desc.size) { | |
391 | unsigned mode; | |
392 | const char *name; | |
c479d14a | 393 | const unsigned char *sha1; |
ba002f3b | 394 | |
c479d14a | 395 | sha1 = tree_entry_extract(&desc, &name, &mode); |
ba002f3b | 396 | |
effd12ec HS |
397 | has_null_sha1 |= is_null_sha1(sha1); |
398 | has_full_path |= !!strchr(name, '/'); | |
399 | has_empty_name |= !*name; | |
400 | has_dot |= !strcmp(name, "."); | |
401 | has_dotdot |= !strcmp(name, ".."); | |
5e519fb8 JH |
402 | has_dotgit |= (!strcmp(name, ".git") || |
403 | is_hfs_dotgit(name) || | |
404 | is_ntfs_dotgit(name)); | |
ba002f3b MK |
405 | has_zero_pad |= *(char *)desc.buffer == '0'; |
406 | update_tree_entry(&desc); | |
407 | ||
408 | switch (mode) { | |
409 | /* | |
410 | * Standard modes.. | |
411 | */ | |
412 | case S_IFREG | 0755: | |
413 | case S_IFREG | 0644: | |
414 | case S_IFLNK: | |
415 | case S_IFDIR: | |
416 | case S_IFGITLINK: | |
417 | break; | |
418 | /* | |
419 | * This is nonstandard, but we had a few of these | |
420 | * early on when we honored the full set of mode | |
421 | * bits.. | |
422 | */ | |
423 | case S_IFREG | 0664: | |
22410549 | 424 | if (!options->strict) |
ba002f3b MK |
425 | break; |
426 | default: | |
427 | has_bad_modes = 1; | |
428 | } | |
429 | ||
430 | if (o_name) { | |
431 | switch (verify_ordered(o_mode, o_name, mode, name)) { | |
432 | case TREE_UNORDERED: | |
433 | not_properly_sorted = 1; | |
434 | break; | |
435 | case TREE_HAS_DUPS: | |
436 | has_dup_entries = 1; | |
437 | break; | |
438 | default: | |
439 | break; | |
440 | } | |
441 | } | |
442 | ||
443 | o_mode = mode; | |
444 | o_name = name; | |
ba002f3b MK |
445 | } |
446 | ||
447 | retval = 0; | |
c479d14a | 448 | if (has_null_sha1) |
c99ba492 | 449 | retval += report(options, &item->object, FSCK_MSG_NULL_SHA1, "contains entries pointing to null sha1"); |
ba002f3b | 450 | if (has_full_path) |
c99ba492 | 451 | retval += report(options, &item->object, FSCK_MSG_FULL_PATHNAME, "contains full pathnames"); |
ba002f3b | 452 | if (has_empty_name) |
c99ba492 | 453 | retval += report(options, &item->object, FSCK_MSG_EMPTY_NAME, "contains empty pathname"); |
5d34a435 | 454 | if (has_dot) |
c99ba492 | 455 | retval += report(options, &item->object, FSCK_MSG_HAS_DOT, "contains '.'"); |
5d34a435 | 456 | if (has_dotdot) |
c99ba492 | 457 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTDOT, "contains '..'"); |
5c17f512 | 458 | if (has_dotgit) |
c99ba492 | 459 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTGIT, "contains '.git'"); |
ba002f3b | 460 | if (has_zero_pad) |
c99ba492 | 461 | retval += report(options, &item->object, FSCK_MSG_ZERO_PADDED_FILEMODE, "contains zero-padded file modes"); |
ba002f3b | 462 | if (has_bad_modes) |
c99ba492 | 463 | retval += report(options, &item->object, FSCK_MSG_BAD_FILEMODE, "contains bad file modes"); |
ba002f3b | 464 | if (has_dup_entries) |
c99ba492 | 465 | retval += report(options, &item->object, FSCK_MSG_DUPLICATE_ENTRIES, "contains duplicate file entries"); |
ba002f3b | 466 | if (not_properly_sorted) |
c99ba492 | 467 | retval += report(options, &item->object, FSCK_MSG_TREE_NOT_SORTED, "not properly sorted"); |
ba002f3b MK |
468 | return retval; |
469 | } | |
470 | ||
4d0d8975 | 471 | static int require_end_of_header(const void *data, unsigned long size, |
22410549 | 472 | struct object *obj, struct fsck_options *options) |
4d0d8975 JS |
473 | { |
474 | const char *buffer = (const char *)data; | |
475 | unsigned long i; | |
476 | ||
477 | for (i = 0; i < size; i++) { | |
478 | switch (buffer[i]) { | |
479 | case '\0': | |
c99ba492 JS |
480 | return report(options, obj, |
481 | FSCK_MSG_NUL_IN_HEADER, | |
482 | "unterminated header: NUL at offset %ld", i); | |
4d0d8975 JS |
483 | case '\n': |
484 | if (i + 1 < size && buffer[i + 1] == '\n') | |
485 | return 0; | |
486 | } | |
487 | } | |
488 | ||
c99ba492 JS |
489 | return report(options, obj, |
490 | FSCK_MSG_UNTERMINATED_HEADER, "unterminated header"); | |
4d0d8975 JS |
491 | } |
492 | ||
22410549 | 493 | static int fsck_ident(const char **ident, struct object *obj, struct fsck_options *options) |
daae1922 | 494 | { |
e6826e33 | 495 | const char *p = *ident; |
d4b8de04 JK |
496 | char *end; |
497 | ||
e6826e33 JS |
498 | *ident = strchrnul(*ident, '\n'); |
499 | if (**ident == '\n') | |
500 | (*ident)++; | |
501 | ||
502 | if (*p == '<') | |
c99ba492 | 503 | return report(options, obj, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
504 | p += strcspn(p, "<>\n"); |
505 | if (*p == '>') | |
c99ba492 | 506 | return report(options, obj, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name"); |
e6826e33 | 507 | if (*p != '<') |
c99ba492 | 508 | return report(options, obj, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email"); |
e6826e33 | 509 | if (p[-1] != ' ') |
c99ba492 | 510 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
511 | p++; |
512 | p += strcspn(p, "<>\n"); | |
513 | if (*p != '>') | |
c99ba492 | 514 | return report(options, obj, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email"); |
e6826e33 JS |
515 | p++; |
516 | if (*p != ' ') | |
c99ba492 | 517 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date"); |
e6826e33 JS |
518 | p++; |
519 | if (*p == '0' && p[1] != ' ') | |
c99ba492 | 520 | return report(options, obj, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date"); |
e6826e33 | 521 | if (date_overflows(strtoul(p, &end, 10))) |
c99ba492 | 522 | return report(options, obj, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow"); |
e6826e33 | 523 | if ((end == p || *end != ' ')) |
c99ba492 | 524 | return report(options, obj, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date"); |
e6826e33 JS |
525 | p = end + 1; |
526 | if ((*p != '+' && *p != '-') || | |
527 | !isdigit(p[1]) || | |
528 | !isdigit(p[2]) || | |
529 | !isdigit(p[3]) || | |
530 | !isdigit(p[4]) || | |
531 | (p[5] != '\n')) | |
c99ba492 | 532 | return report(options, obj, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone"); |
e6826e33 | 533 | p += 6; |
daae1922 JN |
534 | return 0; |
535 | } | |
536 | ||
bc6b8fc1 | 537 | static int fsck_commit_buffer(struct commit *commit, const char *buffer, |
22410549 | 538 | unsigned long size, struct fsck_options *options) |
ba002f3b | 539 | { |
ba002f3b MK |
540 | unsigned char tree_sha1[20], sha1[20]; |
541 | struct commit_graft *graft; | |
c9ad147f | 542 | unsigned parent_count, parent_line_count = 0, author_count; |
daae1922 | 543 | int err; |
ba002f3b | 544 | |
22410549 | 545 | if (require_end_of_header(buffer, size, &commit->object, options)) |
4d0d8975 JS |
546 | return -1; |
547 | ||
cf4fff57 | 548 | if (!skip_prefix(buffer, "tree ", &buffer)) |
c99ba492 | 549 | return report(options, &commit->object, FSCK_MSG_MISSING_TREE, "invalid format - expected 'tree' line"); |
b3584761 JS |
550 | if (get_sha1_hex(buffer, tree_sha1) || buffer[40] != '\n') { |
551 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE_SHA1, "invalid 'tree' line format - bad sha1"); | |
552 | if (err) | |
553 | return err; | |
554 | } | |
2d820a61 | 555 | buffer += 41; |
cf4fff57 | 556 | while (skip_prefix(buffer, "parent ", &buffer)) { |
b3584761 JS |
557 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { |
558 | err = report(options, &commit->object, FSCK_MSG_BAD_PARENT_SHA1, "invalid 'parent' line format - bad sha1"); | |
559 | if (err) | |
560 | return err; | |
561 | } | |
2d820a61 | 562 | buffer += 41; |
9d02150c | 563 | parent_line_count++; |
ba002f3b MK |
564 | } |
565 | graft = lookup_commit_graft(commit->object.sha1); | |
9d02150c | 566 | parent_count = commit_list_count(commit->parents); |
ba002f3b | 567 | if (graft) { |
9d02150c | 568 | if (graft->nr_parent == -1 && !parent_count) |
ba002f3b | 569 | ; /* shallow commit */ |
b3584761 JS |
570 | else if (graft->nr_parent != parent_count) { |
571 | err = report(options, &commit->object, FSCK_MSG_MISSING_GRAFT, "graft objects missing"); | |
572 | if (err) | |
573 | return err; | |
574 | } | |
ba002f3b | 575 | } else { |
b3584761 JS |
576 | if (parent_count != parent_line_count) { |
577 | err = report(options, &commit->object, FSCK_MSG_MISSING_PARENT, "parent objects missing"); | |
578 | if (err) | |
579 | return err; | |
580 | } | |
ba002f3b | 581 | } |
c9ad147f JS |
582 | author_count = 0; |
583 | while (skip_prefix(buffer, "author ", &buffer)) { | |
584 | author_count++; | |
585 | err = fsck_ident(&buffer, &commit->object, options); | |
586 | if (err) | |
587 | return err; | |
588 | } | |
589 | if (author_count < 1) | |
590 | err = report(options, &commit->object, FSCK_MSG_MISSING_AUTHOR, "invalid format - expected 'author' line"); | |
591 | else if (author_count > 1) | |
592 | err = report(options, &commit->object, FSCK_MSG_MULTIPLE_AUTHORS, "invalid format - multiple 'author' lines"); | |
daae1922 JN |
593 | if (err) |
594 | return err; | |
cf4fff57 | 595 | if (!skip_prefix(buffer, "committer ", &buffer)) |
c99ba492 | 596 | return report(options, &commit->object, FSCK_MSG_MISSING_COMMITTER, "invalid format - expected 'committer' line"); |
22410549 | 597 | err = fsck_ident(&buffer, &commit->object, options); |
daae1922 JN |
598 | if (err) |
599 | return err; | |
ba002f3b | 600 | if (!commit->tree) |
c99ba492 | 601 | return report(options, &commit->object, FSCK_MSG_BAD_TREE, "could not load commit's tree %s", sha1_to_hex(tree_sha1)); |
ba002f3b MK |
602 | |
603 | return 0; | |
604 | } | |
605 | ||
90a398bb | 606 | static int fsck_commit(struct commit *commit, const char *data, |
22410549 | 607 | unsigned long size, struct fsck_options *options) |
bc6b8fc1 | 608 | { |
90a398bb | 609 | const char *buffer = data ? data : get_commit_buffer(commit, &size); |
22410549 | 610 | int ret = fsck_commit_buffer(commit, buffer, size, options); |
90a398bb JS |
611 | if (!data) |
612 | unuse_commit_buffer(commit, buffer); | |
bc6b8fc1 JK |
613 | return ret; |
614 | } | |
615 | ||
cec097be | 616 | static int fsck_tag_buffer(struct tag *tag, const char *data, |
22410549 | 617 | unsigned long size, struct fsck_options *options) |
cec097be JS |
618 | { |
619 | unsigned char sha1[20]; | |
620 | int ret = 0; | |
621 | const char *buffer; | |
622 | char *to_free = NULL, *eol; | |
623 | struct strbuf sb = STRBUF_INIT; | |
624 | ||
625 | if (data) | |
626 | buffer = data; | |
627 | else { | |
628 | enum object_type type; | |
629 | ||
630 | buffer = to_free = | |
631 | read_sha1_file(tag->object.sha1, &type, &size); | |
632 | if (!buffer) | |
c99ba492 JS |
633 | return report(options, &tag->object, |
634 | FSCK_MSG_MISSING_TAG_OBJECT, | |
cec097be JS |
635 | "cannot read tag object"); |
636 | ||
637 | if (type != OBJ_TAG) { | |
c99ba492 JS |
638 | ret = report(options, &tag->object, |
639 | FSCK_MSG_TAG_OBJECT_NOT_TAG, | |
cec097be JS |
640 | "expected tag got %s", |
641 | typename(type)); | |
642 | goto done; | |
643 | } | |
644 | } | |
645 | ||
22410549 | 646 | if (require_end_of_header(buffer, size, &tag->object, options)) |
cec097be JS |
647 | goto done; |
648 | ||
649 | if (!skip_prefix(buffer, "object ", &buffer)) { | |
c99ba492 | 650 | ret = report(options, &tag->object, FSCK_MSG_MISSING_OBJECT, "invalid format - expected 'object' line"); |
cec097be JS |
651 | goto done; |
652 | } | |
653 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { | |
c99ba492 | 654 | ret = report(options, &tag->object, FSCK_MSG_BAD_OBJECT_SHA1, "invalid 'object' line format - bad sha1"); |
7d7d5b05 JS |
655 | if (ret) |
656 | goto done; | |
cec097be JS |
657 | } |
658 | buffer += 41; | |
659 | ||
660 | if (!skip_prefix(buffer, "type ", &buffer)) { | |
c99ba492 | 661 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE_ENTRY, "invalid format - expected 'type' line"); |
cec097be JS |
662 | goto done; |
663 | } | |
664 | eol = strchr(buffer, '\n'); | |
665 | if (!eol) { | |
c99ba492 | 666 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
667 | goto done; |
668 | } | |
669 | if (type_from_string_gently(buffer, eol - buffer, 1) < 0) | |
c99ba492 | 670 | ret = report(options, &tag->object, FSCK_MSG_BAD_TYPE, "invalid 'type' value"); |
cec097be JS |
671 | if (ret) |
672 | goto done; | |
673 | buffer = eol + 1; | |
674 | ||
675 | if (!skip_prefix(buffer, "tag ", &buffer)) { | |
c99ba492 | 676 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG_ENTRY, "invalid format - expected 'tag' line"); |
cec097be JS |
677 | goto done; |
678 | } | |
679 | eol = strchr(buffer, '\n'); | |
680 | if (!eol) { | |
c99ba492 | 681 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
682 | goto done; |
683 | } | |
684 | strbuf_addf(&sb, "refs/tags/%.*s", (int)(eol - buffer), buffer); | |
685 | if (check_refname_format(sb.buf, 0)) | |
c99ba492 JS |
686 | report(options, &tag->object, FSCK_MSG_BAD_TAG_NAME, |
687 | "invalid 'tag' name: %.*s", | |
7add4419 | 688 | (int)(eol - buffer), buffer); |
cec097be JS |
689 | buffer = eol + 1; |
690 | ||
691 | if (!skip_prefix(buffer, "tagger ", &buffer)) | |
692 | /* early tags do not contain 'tagger' lines; warn only */ | |
c99ba492 | 693 | report(options, &tag->object, FSCK_MSG_MISSING_TAGGER_ENTRY, "invalid format - expected 'tagger' line"); |
cec097be | 694 | else |
22410549 | 695 | ret = fsck_ident(&buffer, &tag->object, options); |
cec097be JS |
696 | |
697 | done: | |
698 | strbuf_release(&sb); | |
699 | free(to_free); | |
700 | return ret; | |
701 | } | |
702 | ||
90a398bb | 703 | static int fsck_tag(struct tag *tag, const char *data, |
22410549 | 704 | unsigned long size, struct fsck_options *options) |
ba002f3b MK |
705 | { |
706 | struct object *tagged = tag->tagged; | |
707 | ||
708 | if (!tagged) | |
c99ba492 | 709 | return report(options, &tag->object, FSCK_MSG_BAD_TAG_OBJECT, "could not load tagged object"); |
cec097be | 710 | |
22410549 | 711 | return fsck_tag_buffer(tag, data, size, options); |
ba002f3b MK |
712 | } |
713 | ||
90a398bb | 714 | int fsck_object(struct object *obj, void *data, unsigned long size, |
22410549 | 715 | struct fsck_options *options) |
ba002f3b MK |
716 | { |
717 | if (!obj) | |
c99ba492 | 718 | return report(options, obj, FSCK_MSG_BAD_OBJECT_SHA1, "no valid object to fsck"); |
ba002f3b MK |
719 | |
720 | if (obj->type == OBJ_BLOB) | |
721 | return 0; | |
722 | if (obj->type == OBJ_TREE) | |
22410549 | 723 | return fsck_tree((struct tree *) obj, options); |
ba002f3b | 724 | if (obj->type == OBJ_COMMIT) |
90a398bb | 725 | return fsck_commit((struct commit *) obj, (const char *) data, |
22410549 | 726 | size, options); |
ba002f3b | 727 | if (obj->type == OBJ_TAG) |
90a398bb | 728 | return fsck_tag((struct tag *) obj, (const char *) data, |
22410549 | 729 | size, options); |
ba002f3b | 730 | |
c99ba492 | 731 | return report(options, obj, FSCK_MSG_UNKNOWN_TYPE, "unknown type '%d' (internal fsck error)", |
ba002f3b MK |
732 | obj->type); |
733 | } | |
d6ffc8d7 | 734 | |
c99ba492 | 735 | int fsck_error_function(struct object *obj, int msg_type, const char *message) |
d6ffc8d7 | 736 | { |
0282f4dc JS |
737 | if (msg_type == FSCK_WARN) { |
738 | warning("object %s: %s", sha1_to_hex(obj->sha1), message); | |
739 | return 0; | |
740 | } | |
c99ba492 | 741 | error("object %s: %s", sha1_to_hex(obj->sha1), message); |
d6ffc8d7 MK |
742 | return 1; |
743 | } |