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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" |
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; | |
efaba7cc JS |
134 | else if (!strcmp(str, "ignore")) |
135 | return FSCK_IGNORE; | |
0282f4dc JS |
136 | else |
137 | die("Unknown fsck message type: '%s'", str); | |
138 | } | |
139 | ||
5d477a33 JS |
140 | int is_valid_msg_type(const char *msg_id, const char *msg_type) |
141 | { | |
142 | if (parse_msg_id(msg_id) < 0) | |
143 | return 0; | |
144 | parse_msg_type(msg_type); | |
145 | return 1; | |
146 | } | |
147 | ||
0282f4dc JS |
148 | void fsck_set_msg_type(struct fsck_options *options, |
149 | const char *msg_id, const char *msg_type) | |
150 | { | |
151 | int id = parse_msg_id(msg_id), type; | |
152 | ||
153 | if (id < 0) | |
154 | die("Unhandled message id: %s", msg_id); | |
155 | type = parse_msg_type(msg_type); | |
156 | ||
f50c4407 JS |
157 | if (type != FSCK_ERROR && msg_id_info[id].msg_type == FSCK_FATAL) |
158 | die("Cannot demote %s to %s", msg_id, msg_type); | |
159 | ||
0282f4dc JS |
160 | if (!options->msg_type) { |
161 | int i; | |
162 | int *msg_type = xmalloc(sizeof(int) * FSCK_MSG_MAX); | |
163 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
164 | msg_type[i] = fsck_msg_type(i, options); | |
165 | options->msg_type = msg_type; | |
166 | } | |
167 | ||
168 | options->msg_type[id] = type; | |
169 | } | |
170 | ||
171 | void fsck_set_msg_types(struct fsck_options *options, const char *values) | |
172 | { | |
173 | char *buf = xstrdup(values), *to_free = buf; | |
174 | int done = 0; | |
175 | ||
176 | while (!done) { | |
177 | int len = strcspn(buf, " ,|"), equal; | |
178 | ||
179 | done = !buf[len]; | |
180 | if (!len) { | |
181 | buf++; | |
182 | continue; | |
183 | } | |
184 | buf[len] = '\0'; | |
185 | ||
186 | for (equal = 0; | |
187 | equal < len && buf[equal] != '=' && buf[equal] != ':'; | |
188 | equal++) | |
189 | buf[equal] = tolower(buf[equal]); | |
190 | buf[equal] = '\0'; | |
191 | ||
192 | if (equal == len) | |
193 | die("Missing '=': '%s'", buf); | |
194 | ||
195 | fsck_set_msg_type(options, buf, buf + equal + 1); | |
196 | buf += len + 1; | |
197 | } | |
198 | free(to_free); | |
199 | } | |
200 | ||
71ab8fa8 JS |
201 | static void append_msg_id(struct strbuf *sb, const char *msg_id) |
202 | { | |
203 | for (;;) { | |
204 | char c = *(msg_id)++; | |
205 | ||
206 | if (!c) | |
207 | break; | |
208 | if (c != '_') | |
209 | strbuf_addch(sb, tolower(c)); | |
210 | else { | |
211 | assert(*msg_id); | |
212 | strbuf_addch(sb, *(msg_id)++); | |
213 | } | |
214 | } | |
215 | ||
216 | strbuf_addstr(sb, ": "); | |
217 | } | |
218 | ||
c99ba492 JS |
219 | __attribute__((format (printf, 4, 5))) |
220 | static int report(struct fsck_options *options, struct object *object, | |
221 | enum fsck_msg_id id, const char *fmt, ...) | |
222 | { | |
223 | va_list ap; | |
224 | struct strbuf sb = STRBUF_INIT; | |
225 | int msg_type = fsck_msg_type(id, options), result; | |
226 | ||
efaba7cc JS |
227 | if (msg_type == FSCK_IGNORE) |
228 | return 0; | |
229 | ||
f50c4407 JS |
230 | if (msg_type == FSCK_FATAL) |
231 | msg_type = FSCK_ERROR; | |
232 | ||
71ab8fa8 JS |
233 | append_msg_id(&sb, msg_id_info[id].id_string); |
234 | ||
c99ba492 JS |
235 | va_start(ap, fmt); |
236 | strbuf_vaddf(&sb, fmt, ap); | |
237 | result = options->error_func(object, msg_type, sb.buf); | |
238 | strbuf_release(&sb); | |
239 | va_end(ap); | |
240 | ||
241 | return result; | |
242 | } | |
243 | ||
22410549 | 244 | static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *options) |
355885d5 MK |
245 | { |
246 | struct tree_desc desc; | |
247 | struct name_entry entry; | |
248 | int res = 0; | |
249 | ||
250 | if (parse_tree(tree)) | |
251 | return -1; | |
252 | ||
253 | init_tree_desc(&desc, tree->buffer, tree->size); | |
254 | while (tree_entry(&desc, &entry)) { | |
255 | int result; | |
256 | ||
257 | if (S_ISGITLINK(entry.mode)) | |
258 | continue; | |
259 | if (S_ISDIR(entry.mode)) | |
22410549 | 260 | result = options->walk(&lookup_tree(entry.sha1)->object, OBJ_TREE, data, options); |
355885d5 | 261 | else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) |
22410549 | 262 | result = options->walk(&lookup_blob(entry.sha1)->object, OBJ_BLOB, data, options); |
355885d5 | 263 | else { |
82247e9b | 264 | result = error("in tree %s: entry %s has bad mode %.6o", |
355885d5 MK |
265 | sha1_to_hex(tree->object.sha1), entry.path, entry.mode); |
266 | } | |
267 | if (result < 0) | |
268 | return result; | |
269 | if (!res) | |
270 | res = result; | |
271 | } | |
272 | return res; | |
273 | } | |
274 | ||
22410549 | 275 | static int fsck_walk_commit(struct commit *commit, void *data, struct fsck_options *options) |
355885d5 MK |
276 | { |
277 | struct commit_list *parents; | |
278 | int res; | |
279 | int result; | |
280 | ||
281 | if (parse_commit(commit)) | |
282 | return -1; | |
283 | ||
22410549 | 284 | result = options->walk((struct object *)commit->tree, OBJ_TREE, data, options); |
355885d5 MK |
285 | if (result < 0) |
286 | return result; | |
287 | res = result; | |
288 | ||
289 | parents = commit->parents; | |
290 | while (parents) { | |
22410549 | 291 | result = options->walk((struct object *)parents->item, OBJ_COMMIT, data, options); |
355885d5 MK |
292 | if (result < 0) |
293 | return result; | |
294 | if (!res) | |
295 | res = result; | |
296 | parents = parents->next; | |
297 | } | |
298 | return res; | |
299 | } | |
300 | ||
22410549 | 301 | static int fsck_walk_tag(struct tag *tag, void *data, struct fsck_options *options) |
355885d5 MK |
302 | { |
303 | if (parse_tag(tag)) | |
304 | return -1; | |
22410549 | 305 | return options->walk(tag->tagged, OBJ_ANY, data, options); |
355885d5 MK |
306 | } |
307 | ||
22410549 | 308 | int fsck_walk(struct object *obj, void *data, struct fsck_options *options) |
355885d5 MK |
309 | { |
310 | if (!obj) | |
311 | return -1; | |
312 | switch (obj->type) { | |
313 | case OBJ_BLOB: | |
314 | return 0; | |
315 | case OBJ_TREE: | |
22410549 | 316 | return fsck_walk_tree((struct tree *)obj, data, options); |
355885d5 | 317 | case OBJ_COMMIT: |
22410549 | 318 | return fsck_walk_commit((struct commit *)obj, data, options); |
355885d5 | 319 | case OBJ_TAG: |
22410549 | 320 | return fsck_walk_tag((struct tag *)obj, data, options); |
355885d5 MK |
321 | default: |
322 | error("Unknown object type for %s", sha1_to_hex(obj->sha1)); | |
323 | return -1; | |
324 | } | |
325 | } | |
ba002f3b MK |
326 | |
327 | /* | |
328 | * The entries in a tree are ordered in the _path_ order, | |
329 | * which means that a directory entry is ordered by adding | |
330 | * a slash to the end of it. | |
331 | * | |
332 | * So a directory called "a" is ordered _after_ a file | |
333 | * called "a.c", because "a/" sorts after "a.c". | |
334 | */ | |
335 | #define TREE_UNORDERED (-1) | |
336 | #define TREE_HAS_DUPS (-2) | |
337 | ||
338 | static int verify_ordered(unsigned mode1, const char *name1, unsigned mode2, const char *name2) | |
339 | { | |
340 | int len1 = strlen(name1); | |
341 | int len2 = strlen(name2); | |
342 | int len = len1 < len2 ? len1 : len2; | |
343 | unsigned char c1, c2; | |
344 | int cmp; | |
345 | ||
346 | cmp = memcmp(name1, name2, len); | |
347 | if (cmp < 0) | |
348 | return 0; | |
349 | if (cmp > 0) | |
350 | return TREE_UNORDERED; | |
351 | ||
352 | /* | |
353 | * Ok, the first <len> characters are the same. | |
354 | * Now we need to order the next one, but turn | |
355 | * a '\0' into a '/' for a directory entry. | |
356 | */ | |
357 | c1 = name1[len]; | |
358 | c2 = name2[len]; | |
359 | if (!c1 && !c2) | |
360 | /* | |
361 | * git-write-tree used to write out a nonsense tree that has | |
362 | * entries with the same name, one blob and one tree. Make | |
363 | * sure we do not have duplicate entries. | |
364 | */ | |
365 | return TREE_HAS_DUPS; | |
366 | if (!c1 && S_ISDIR(mode1)) | |
367 | c1 = '/'; | |
368 | if (!c2 && S_ISDIR(mode2)) | |
369 | c2 = '/'; | |
370 | return c1 < c2 ? 0 : TREE_UNORDERED; | |
371 | } | |
372 | ||
22410549 | 373 | static int fsck_tree(struct tree *item, struct fsck_options *options) |
ba002f3b MK |
374 | { |
375 | int retval; | |
c479d14a | 376 | int has_null_sha1 = 0; |
ba002f3b MK |
377 | int has_full_path = 0; |
378 | int has_empty_name = 0; | |
5d34a435 JK |
379 | int has_dot = 0; |
380 | int has_dotdot = 0; | |
5c17f512 | 381 | int has_dotgit = 0; |
ba002f3b MK |
382 | int has_zero_pad = 0; |
383 | int has_bad_modes = 0; | |
384 | int has_dup_entries = 0; | |
385 | int not_properly_sorted = 0; | |
386 | struct tree_desc desc; | |
387 | unsigned o_mode; | |
388 | const char *o_name; | |
ba002f3b MK |
389 | |
390 | init_tree_desc(&desc, item->buffer, item->size); | |
391 | ||
392 | o_mode = 0; | |
393 | o_name = NULL; | |
ba002f3b MK |
394 | |
395 | while (desc.size) { | |
396 | unsigned mode; | |
397 | const char *name; | |
c479d14a | 398 | const unsigned char *sha1; |
ba002f3b | 399 | |
c479d14a | 400 | sha1 = tree_entry_extract(&desc, &name, &mode); |
ba002f3b | 401 | |
effd12ec HS |
402 | has_null_sha1 |= is_null_sha1(sha1); |
403 | has_full_path |= !!strchr(name, '/'); | |
404 | has_empty_name |= !*name; | |
405 | has_dot |= !strcmp(name, "."); | |
406 | has_dotdot |= !strcmp(name, ".."); | |
5e519fb8 JH |
407 | has_dotgit |= (!strcmp(name, ".git") || |
408 | is_hfs_dotgit(name) || | |
409 | is_ntfs_dotgit(name)); | |
ba002f3b MK |
410 | has_zero_pad |= *(char *)desc.buffer == '0'; |
411 | update_tree_entry(&desc); | |
412 | ||
413 | switch (mode) { | |
414 | /* | |
415 | * Standard modes.. | |
416 | */ | |
417 | case S_IFREG | 0755: | |
418 | case S_IFREG | 0644: | |
419 | case S_IFLNK: | |
420 | case S_IFDIR: | |
421 | case S_IFGITLINK: | |
422 | break; | |
423 | /* | |
424 | * This is nonstandard, but we had a few of these | |
425 | * early on when we honored the full set of mode | |
426 | * bits.. | |
427 | */ | |
428 | case S_IFREG | 0664: | |
22410549 | 429 | if (!options->strict) |
ba002f3b MK |
430 | break; |
431 | default: | |
432 | has_bad_modes = 1; | |
433 | } | |
434 | ||
435 | if (o_name) { | |
436 | switch (verify_ordered(o_mode, o_name, mode, name)) { | |
437 | case TREE_UNORDERED: | |
438 | not_properly_sorted = 1; | |
439 | break; | |
440 | case TREE_HAS_DUPS: | |
441 | has_dup_entries = 1; | |
442 | break; | |
443 | default: | |
444 | break; | |
445 | } | |
446 | } | |
447 | ||
448 | o_mode = mode; | |
449 | o_name = name; | |
ba002f3b MK |
450 | } |
451 | ||
452 | retval = 0; | |
c479d14a | 453 | if (has_null_sha1) |
c99ba492 | 454 | retval += report(options, &item->object, FSCK_MSG_NULL_SHA1, "contains entries pointing to null sha1"); |
ba002f3b | 455 | if (has_full_path) |
c99ba492 | 456 | retval += report(options, &item->object, FSCK_MSG_FULL_PATHNAME, "contains full pathnames"); |
ba002f3b | 457 | if (has_empty_name) |
c99ba492 | 458 | retval += report(options, &item->object, FSCK_MSG_EMPTY_NAME, "contains empty pathname"); |
5d34a435 | 459 | if (has_dot) |
c99ba492 | 460 | retval += report(options, &item->object, FSCK_MSG_HAS_DOT, "contains '.'"); |
5d34a435 | 461 | if (has_dotdot) |
c99ba492 | 462 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTDOT, "contains '..'"); |
5c17f512 | 463 | if (has_dotgit) |
c99ba492 | 464 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTGIT, "contains '.git'"); |
ba002f3b | 465 | if (has_zero_pad) |
c99ba492 | 466 | retval += report(options, &item->object, FSCK_MSG_ZERO_PADDED_FILEMODE, "contains zero-padded file modes"); |
ba002f3b | 467 | if (has_bad_modes) |
c99ba492 | 468 | retval += report(options, &item->object, FSCK_MSG_BAD_FILEMODE, "contains bad file modes"); |
ba002f3b | 469 | if (has_dup_entries) |
c99ba492 | 470 | retval += report(options, &item->object, FSCK_MSG_DUPLICATE_ENTRIES, "contains duplicate file entries"); |
ba002f3b | 471 | if (not_properly_sorted) |
c99ba492 | 472 | retval += report(options, &item->object, FSCK_MSG_TREE_NOT_SORTED, "not properly sorted"); |
ba002f3b MK |
473 | return retval; |
474 | } | |
475 | ||
4d0d8975 | 476 | static int require_end_of_header(const void *data, unsigned long size, |
22410549 | 477 | struct object *obj, struct fsck_options *options) |
4d0d8975 JS |
478 | { |
479 | const char *buffer = (const char *)data; | |
480 | unsigned long i; | |
481 | ||
482 | for (i = 0; i < size; i++) { | |
483 | switch (buffer[i]) { | |
484 | case '\0': | |
c99ba492 JS |
485 | return report(options, obj, |
486 | FSCK_MSG_NUL_IN_HEADER, | |
487 | "unterminated header: NUL at offset %ld", i); | |
4d0d8975 JS |
488 | case '\n': |
489 | if (i + 1 < size && buffer[i + 1] == '\n') | |
490 | return 0; | |
491 | } | |
492 | } | |
493 | ||
c99ba492 JS |
494 | return report(options, obj, |
495 | FSCK_MSG_UNTERMINATED_HEADER, "unterminated header"); | |
4d0d8975 JS |
496 | } |
497 | ||
22410549 | 498 | static int fsck_ident(const char **ident, struct object *obj, struct fsck_options *options) |
daae1922 | 499 | { |
e6826e33 | 500 | const char *p = *ident; |
d4b8de04 JK |
501 | char *end; |
502 | ||
e6826e33 JS |
503 | *ident = strchrnul(*ident, '\n'); |
504 | if (**ident == '\n') | |
505 | (*ident)++; | |
506 | ||
507 | if (*p == '<') | |
c99ba492 | 508 | return report(options, obj, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
509 | p += strcspn(p, "<>\n"); |
510 | if (*p == '>') | |
c99ba492 | 511 | return report(options, obj, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name"); |
e6826e33 | 512 | if (*p != '<') |
c99ba492 | 513 | return report(options, obj, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email"); |
e6826e33 | 514 | if (p[-1] != ' ') |
c99ba492 | 515 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
516 | p++; |
517 | p += strcspn(p, "<>\n"); | |
518 | if (*p != '>') | |
c99ba492 | 519 | return report(options, obj, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email"); |
e6826e33 JS |
520 | p++; |
521 | if (*p != ' ') | |
c99ba492 | 522 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date"); |
e6826e33 JS |
523 | p++; |
524 | if (*p == '0' && p[1] != ' ') | |
c99ba492 | 525 | return report(options, obj, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date"); |
e6826e33 | 526 | if (date_overflows(strtoul(p, &end, 10))) |
c99ba492 | 527 | return report(options, obj, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow"); |
e6826e33 | 528 | if ((end == p || *end != ' ')) |
c99ba492 | 529 | return report(options, obj, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date"); |
e6826e33 JS |
530 | p = end + 1; |
531 | if ((*p != '+' && *p != '-') || | |
532 | !isdigit(p[1]) || | |
533 | !isdigit(p[2]) || | |
534 | !isdigit(p[3]) || | |
535 | !isdigit(p[4]) || | |
536 | (p[5] != '\n')) | |
c99ba492 | 537 | return report(options, obj, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone"); |
e6826e33 | 538 | p += 6; |
daae1922 JN |
539 | return 0; |
540 | } | |
541 | ||
bc6b8fc1 | 542 | static int fsck_commit_buffer(struct commit *commit, const char *buffer, |
22410549 | 543 | unsigned long size, struct fsck_options *options) |
ba002f3b | 544 | { |
ba002f3b MK |
545 | unsigned char tree_sha1[20], sha1[20]; |
546 | struct commit_graft *graft; | |
c9ad147f | 547 | unsigned parent_count, parent_line_count = 0, author_count; |
daae1922 | 548 | int err; |
ba002f3b | 549 | |
22410549 | 550 | if (require_end_of_header(buffer, size, &commit->object, options)) |
4d0d8975 JS |
551 | return -1; |
552 | ||
cf4fff57 | 553 | if (!skip_prefix(buffer, "tree ", &buffer)) |
c99ba492 | 554 | return report(options, &commit->object, FSCK_MSG_MISSING_TREE, "invalid format - expected 'tree' line"); |
b3584761 JS |
555 | if (get_sha1_hex(buffer, tree_sha1) || buffer[40] != '\n') { |
556 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE_SHA1, "invalid 'tree' line format - bad sha1"); | |
557 | if (err) | |
558 | return err; | |
559 | } | |
2d820a61 | 560 | buffer += 41; |
cf4fff57 | 561 | while (skip_prefix(buffer, "parent ", &buffer)) { |
b3584761 JS |
562 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { |
563 | err = report(options, &commit->object, FSCK_MSG_BAD_PARENT_SHA1, "invalid 'parent' line format - bad sha1"); | |
564 | if (err) | |
565 | return err; | |
566 | } | |
2d820a61 | 567 | buffer += 41; |
9d02150c | 568 | parent_line_count++; |
ba002f3b MK |
569 | } |
570 | graft = lookup_commit_graft(commit->object.sha1); | |
9d02150c | 571 | parent_count = commit_list_count(commit->parents); |
ba002f3b | 572 | if (graft) { |
9d02150c | 573 | if (graft->nr_parent == -1 && !parent_count) |
ba002f3b | 574 | ; /* shallow commit */ |
b3584761 JS |
575 | else if (graft->nr_parent != parent_count) { |
576 | err = report(options, &commit->object, FSCK_MSG_MISSING_GRAFT, "graft objects missing"); | |
577 | if (err) | |
578 | return err; | |
579 | } | |
ba002f3b | 580 | } else { |
b3584761 JS |
581 | if (parent_count != parent_line_count) { |
582 | err = report(options, &commit->object, FSCK_MSG_MISSING_PARENT, "parent objects missing"); | |
583 | if (err) | |
584 | return err; | |
585 | } | |
ba002f3b | 586 | } |
c9ad147f JS |
587 | author_count = 0; |
588 | while (skip_prefix(buffer, "author ", &buffer)) { | |
589 | author_count++; | |
590 | err = fsck_ident(&buffer, &commit->object, options); | |
591 | if (err) | |
592 | return err; | |
593 | } | |
594 | if (author_count < 1) | |
595 | err = report(options, &commit->object, FSCK_MSG_MISSING_AUTHOR, "invalid format - expected 'author' line"); | |
596 | else if (author_count > 1) | |
597 | err = report(options, &commit->object, FSCK_MSG_MULTIPLE_AUTHORS, "invalid format - multiple 'author' lines"); | |
daae1922 JN |
598 | if (err) |
599 | return err; | |
cf4fff57 | 600 | if (!skip_prefix(buffer, "committer ", &buffer)) |
c99ba492 | 601 | return report(options, &commit->object, FSCK_MSG_MISSING_COMMITTER, "invalid format - expected 'committer' line"); |
22410549 | 602 | err = fsck_ident(&buffer, &commit->object, options); |
daae1922 JN |
603 | if (err) |
604 | return err; | |
ba002f3b | 605 | if (!commit->tree) |
c99ba492 | 606 | return report(options, &commit->object, FSCK_MSG_BAD_TREE, "could not load commit's tree %s", sha1_to_hex(tree_sha1)); |
ba002f3b MK |
607 | |
608 | return 0; | |
609 | } | |
610 | ||
90a398bb | 611 | static int fsck_commit(struct commit *commit, const char *data, |
22410549 | 612 | unsigned long size, struct fsck_options *options) |
bc6b8fc1 | 613 | { |
90a398bb | 614 | const char *buffer = data ? data : get_commit_buffer(commit, &size); |
22410549 | 615 | int ret = fsck_commit_buffer(commit, buffer, size, options); |
90a398bb JS |
616 | if (!data) |
617 | unuse_commit_buffer(commit, buffer); | |
bc6b8fc1 JK |
618 | return ret; |
619 | } | |
620 | ||
cec097be | 621 | static int fsck_tag_buffer(struct tag *tag, const char *data, |
22410549 | 622 | unsigned long size, struct fsck_options *options) |
cec097be JS |
623 | { |
624 | unsigned char sha1[20]; | |
625 | int ret = 0; | |
626 | const char *buffer; | |
627 | char *to_free = NULL, *eol; | |
628 | struct strbuf sb = STRBUF_INIT; | |
629 | ||
630 | if (data) | |
631 | buffer = data; | |
632 | else { | |
633 | enum object_type type; | |
634 | ||
635 | buffer = to_free = | |
636 | read_sha1_file(tag->object.sha1, &type, &size); | |
637 | if (!buffer) | |
c99ba492 JS |
638 | return report(options, &tag->object, |
639 | FSCK_MSG_MISSING_TAG_OBJECT, | |
cec097be JS |
640 | "cannot read tag object"); |
641 | ||
642 | if (type != OBJ_TAG) { | |
c99ba492 JS |
643 | ret = report(options, &tag->object, |
644 | FSCK_MSG_TAG_OBJECT_NOT_TAG, | |
cec097be JS |
645 | "expected tag got %s", |
646 | typename(type)); | |
647 | goto done; | |
648 | } | |
649 | } | |
650 | ||
22410549 | 651 | if (require_end_of_header(buffer, size, &tag->object, options)) |
cec097be JS |
652 | goto done; |
653 | ||
654 | if (!skip_prefix(buffer, "object ", &buffer)) { | |
c99ba492 | 655 | ret = report(options, &tag->object, FSCK_MSG_MISSING_OBJECT, "invalid format - expected 'object' line"); |
cec097be JS |
656 | goto done; |
657 | } | |
658 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { | |
c99ba492 | 659 | ret = report(options, &tag->object, FSCK_MSG_BAD_OBJECT_SHA1, "invalid 'object' line format - bad sha1"); |
7d7d5b05 JS |
660 | if (ret) |
661 | goto done; | |
cec097be JS |
662 | } |
663 | buffer += 41; | |
664 | ||
665 | if (!skip_prefix(buffer, "type ", &buffer)) { | |
c99ba492 | 666 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE_ENTRY, "invalid format - expected 'type' line"); |
cec097be JS |
667 | goto done; |
668 | } | |
669 | eol = strchr(buffer, '\n'); | |
670 | if (!eol) { | |
c99ba492 | 671 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
672 | goto done; |
673 | } | |
674 | if (type_from_string_gently(buffer, eol - buffer, 1) < 0) | |
c99ba492 | 675 | ret = report(options, &tag->object, FSCK_MSG_BAD_TYPE, "invalid 'type' value"); |
cec097be JS |
676 | if (ret) |
677 | goto done; | |
678 | buffer = eol + 1; | |
679 | ||
680 | if (!skip_prefix(buffer, "tag ", &buffer)) { | |
c99ba492 | 681 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG_ENTRY, "invalid format - expected 'tag' line"); |
cec097be JS |
682 | goto done; |
683 | } | |
684 | eol = strchr(buffer, '\n'); | |
685 | if (!eol) { | |
c99ba492 | 686 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
687 | goto done; |
688 | } | |
689 | strbuf_addf(&sb, "refs/tags/%.*s", (int)(eol - buffer), buffer); | |
690 | if (check_refname_format(sb.buf, 0)) | |
c99ba492 JS |
691 | report(options, &tag->object, FSCK_MSG_BAD_TAG_NAME, |
692 | "invalid 'tag' name: %.*s", | |
7add4419 | 693 | (int)(eol - buffer), buffer); |
cec097be JS |
694 | buffer = eol + 1; |
695 | ||
696 | if (!skip_prefix(buffer, "tagger ", &buffer)) | |
697 | /* early tags do not contain 'tagger' lines; warn only */ | |
c99ba492 | 698 | report(options, &tag->object, FSCK_MSG_MISSING_TAGGER_ENTRY, "invalid format - expected 'tagger' line"); |
cec097be | 699 | else |
22410549 | 700 | ret = fsck_ident(&buffer, &tag->object, options); |
cec097be JS |
701 | |
702 | done: | |
703 | strbuf_release(&sb); | |
704 | free(to_free); | |
705 | return ret; | |
706 | } | |
707 | ||
90a398bb | 708 | static int fsck_tag(struct tag *tag, const char *data, |
22410549 | 709 | unsigned long size, struct fsck_options *options) |
ba002f3b MK |
710 | { |
711 | struct object *tagged = tag->tagged; | |
712 | ||
713 | if (!tagged) | |
c99ba492 | 714 | return report(options, &tag->object, FSCK_MSG_BAD_TAG_OBJECT, "could not load tagged object"); |
cec097be | 715 | |
22410549 | 716 | return fsck_tag_buffer(tag, data, size, options); |
ba002f3b MK |
717 | } |
718 | ||
90a398bb | 719 | int fsck_object(struct object *obj, void *data, unsigned long size, |
22410549 | 720 | struct fsck_options *options) |
ba002f3b MK |
721 | { |
722 | if (!obj) | |
c99ba492 | 723 | return report(options, obj, FSCK_MSG_BAD_OBJECT_SHA1, "no valid object to fsck"); |
ba002f3b MK |
724 | |
725 | if (obj->type == OBJ_BLOB) | |
726 | return 0; | |
727 | if (obj->type == OBJ_TREE) | |
22410549 | 728 | return fsck_tree((struct tree *) obj, options); |
ba002f3b | 729 | if (obj->type == OBJ_COMMIT) |
90a398bb | 730 | return fsck_commit((struct commit *) obj, (const char *) data, |
22410549 | 731 | size, options); |
ba002f3b | 732 | if (obj->type == OBJ_TAG) |
90a398bb | 733 | return fsck_tag((struct tag *) obj, (const char *) data, |
22410549 | 734 | size, options); |
ba002f3b | 735 | |
c99ba492 | 736 | return report(options, obj, FSCK_MSG_UNKNOWN_TYPE, "unknown type '%d' (internal fsck error)", |
ba002f3b MK |
737 | obj->type); |
738 | } | |
d6ffc8d7 | 739 | |
c99ba492 | 740 | int fsck_error_function(struct object *obj, int msg_type, const char *message) |
d6ffc8d7 | 741 | { |
0282f4dc JS |
742 | if (msg_type == FSCK_WARN) { |
743 | warning("object %s: %s", sha1_to_hex(obj->sha1), message); | |
744 | return 0; | |
745 | } | |
c99ba492 | 746 | error("object %s: %s", sha1_to_hex(obj->sha1), message); |
d6ffc8d7 MK |
747 | return 1; |
748 | } |