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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" |
159e7b08 JK |
13 | #include "oidset.h" |
14 | ||
15 | static struct oidset gitmodules_found = OIDSET_INIT; | |
16 | static struct oidset gitmodules_done = OIDSET_INIT; | |
355885d5 | 17 | |
f50c4407 | 18 | #define FSCK_FATAL -1 |
f27d05b1 | 19 | #define FSCK_INFO -2 |
f50c4407 | 20 | |
c99ba492 | 21 | #define FOREACH_MSG_ID(FUNC) \ |
f50c4407 JS |
22 | /* fatal errors */ \ |
23 | FUNC(NUL_IN_HEADER, FATAL) \ | |
24 | FUNC(UNTERMINATED_HEADER, FATAL) \ | |
c99ba492 JS |
25 | /* errors */ \ |
26 | FUNC(BAD_DATE, ERROR) \ | |
27 | FUNC(BAD_DATE_OVERFLOW, ERROR) \ | |
28 | FUNC(BAD_EMAIL, ERROR) \ | |
29 | FUNC(BAD_NAME, ERROR) \ | |
30 | FUNC(BAD_OBJECT_SHA1, ERROR) \ | |
31 | FUNC(BAD_PARENT_SHA1, ERROR) \ | |
32 | FUNC(BAD_TAG_OBJECT, ERROR) \ | |
33 | FUNC(BAD_TIMEZONE, ERROR) \ | |
34 | FUNC(BAD_TREE, ERROR) \ | |
35 | FUNC(BAD_TREE_SHA1, ERROR) \ | |
36 | FUNC(BAD_TYPE, ERROR) \ | |
37 | FUNC(DUPLICATE_ENTRIES, ERROR) \ | |
38 | FUNC(MISSING_AUTHOR, ERROR) \ | |
39 | FUNC(MISSING_COMMITTER, ERROR) \ | |
40 | FUNC(MISSING_EMAIL, ERROR) \ | |
41 | FUNC(MISSING_GRAFT, ERROR) \ | |
42 | FUNC(MISSING_NAME_BEFORE_EMAIL, ERROR) \ | |
43 | FUNC(MISSING_OBJECT, ERROR) \ | |
44 | FUNC(MISSING_PARENT, ERROR) \ | |
45 | FUNC(MISSING_SPACE_BEFORE_DATE, ERROR) \ | |
46 | FUNC(MISSING_SPACE_BEFORE_EMAIL, ERROR) \ | |
47 | FUNC(MISSING_TAG, ERROR) \ | |
48 | FUNC(MISSING_TAG_ENTRY, ERROR) \ | |
49 | FUNC(MISSING_TAG_OBJECT, ERROR) \ | |
50 | FUNC(MISSING_TREE, ERROR) \ | |
159e7b08 | 51 | FUNC(MISSING_TREE_OBJECT, ERROR) \ |
c99ba492 JS |
52 | FUNC(MISSING_TYPE, ERROR) \ |
53 | FUNC(MISSING_TYPE_ENTRY, ERROR) \ | |
c9ad147f | 54 | FUNC(MULTIPLE_AUTHORS, ERROR) \ |
c99ba492 JS |
55 | FUNC(TAG_OBJECT_NOT_TAG, ERROR) \ |
56 | FUNC(TREE_NOT_SORTED, ERROR) \ | |
57 | FUNC(UNKNOWN_TYPE, ERROR) \ | |
c99ba492 | 58 | FUNC(ZERO_PADDED_DATE, ERROR) \ |
159e7b08 JK |
59 | FUNC(GITMODULES_MISSING, ERROR) \ |
60 | FUNC(GITMODULES_BLOB, ERROR) \ | |
c99ba492 JS |
61 | /* warnings */ \ |
62 | FUNC(BAD_FILEMODE, WARN) \ | |
c99ba492 JS |
63 | FUNC(EMPTY_NAME, WARN) \ |
64 | FUNC(FULL_PATHNAME, WARN) \ | |
65 | FUNC(HAS_DOT, WARN) \ | |
66 | FUNC(HAS_DOTDOT, WARN) \ | |
67 | FUNC(HAS_DOTGIT, WARN) \ | |
c99ba492 | 68 | FUNC(NULL_SHA1, WARN) \ |
f27d05b1 | 69 | FUNC(ZERO_PADDED_FILEMODE, WARN) \ |
6d2d780f | 70 | FUNC(NUL_IN_COMMIT, WARN) \ |
f27d05b1 JS |
71 | /* infos (reported as warnings, but ignored by default) */ \ |
72 | FUNC(BAD_TAG_NAME, INFO) \ | |
73 | FUNC(MISSING_TAGGER_ENTRY, INFO) | |
c99ba492 JS |
74 | |
75 | #define MSG_ID(id, msg_type) FSCK_MSG_##id, | |
76 | enum fsck_msg_id { | |
77 | FOREACH_MSG_ID(MSG_ID) | |
78 | FSCK_MSG_MAX | |
79 | }; | |
80 | #undef MSG_ID | |
81 | ||
f417eed8 JS |
82 | #define STR(x) #x |
83 | #define MSG_ID(id, msg_type) { STR(id), NULL, FSCK_##msg_type }, | |
c99ba492 | 84 | static struct { |
f417eed8 JS |
85 | const char *id_string; |
86 | const char *downcased; | |
c99ba492 JS |
87 | int msg_type; |
88 | } msg_id_info[FSCK_MSG_MAX + 1] = { | |
89 | FOREACH_MSG_ID(MSG_ID) | |
f417eed8 | 90 | { NULL, NULL, -1 } |
c99ba492 JS |
91 | }; |
92 | #undef MSG_ID | |
93 | ||
f417eed8 JS |
94 | static int parse_msg_id(const char *text) |
95 | { | |
96 | int i; | |
97 | ||
98 | if (!msg_id_info[0].downcased) { | |
99 | /* convert id_string to lower case, without underscores. */ | |
100 | for (i = 0; i < FSCK_MSG_MAX; i++) { | |
101 | const char *p = msg_id_info[i].id_string; | |
102 | int len = strlen(p); | |
103 | char *q = xmalloc(len); | |
104 | ||
105 | msg_id_info[i].downcased = q; | |
106 | while (*p) | |
107 | if (*p == '_') | |
108 | p++; | |
109 | else | |
110 | *(q)++ = tolower(*(p)++); | |
111 | *q = '\0'; | |
112 | } | |
113 | } | |
114 | ||
115 | for (i = 0; i < FSCK_MSG_MAX; i++) | |
116 | if (!strcmp(text, msg_id_info[i].downcased)) | |
117 | return i; | |
118 | ||
119 | return -1; | |
120 | } | |
121 | ||
c99ba492 JS |
122 | static int fsck_msg_type(enum fsck_msg_id msg_id, |
123 | struct fsck_options *options) | |
124 | { | |
125 | int msg_type; | |
126 | ||
0282f4dc JS |
127 | assert(msg_id >= 0 && msg_id < FSCK_MSG_MAX); |
128 | ||
129 | if (options->msg_type) | |
130 | msg_type = options->msg_type[msg_id]; | |
131 | else { | |
132 | msg_type = msg_id_info[msg_id].msg_type; | |
133 | if (options->strict && msg_type == FSCK_WARN) | |
134 | msg_type = FSCK_ERROR; | |
135 | } | |
c99ba492 JS |
136 | |
137 | return msg_type; | |
138 | } | |
139 | ||
cd94c6f9 JS |
140 | static void init_skiplist(struct fsck_options *options, const char *path) |
141 | { | |
910650d2 | 142 | static struct oid_array skiplist = OID_ARRAY_INIT; |
cd94c6f9 | 143 | int sorted, fd; |
365c27fb | 144 | char buffer[GIT_MAX_HEXSZ + 1]; |
145 | struct object_id oid; | |
cd94c6f9 JS |
146 | |
147 | if (options->skiplist) | |
148 | sorted = options->skiplist->sorted; | |
149 | else { | |
150 | sorted = 1; | |
151 | options->skiplist = &skiplist; | |
152 | } | |
153 | ||
154 | fd = open(path, O_RDONLY); | |
155 | if (fd < 0) | |
156 | die("Could not open skip list: %s", path); | |
157 | for (;;) { | |
365c27fb | 158 | const char *p; |
cd94c6f9 JS |
159 | int result = read_in_full(fd, buffer, sizeof(buffer)); |
160 | if (result < 0) | |
161 | die_errno("Could not read '%s'", path); | |
162 | if (!result) | |
163 | break; | |
365c27fb | 164 | if (parse_oid_hex(buffer, &oid, &p) || *p != '\n') |
cd94c6f9 | 165 | die("Invalid SHA-1: %s", buffer); |
910650d2 | 166 | oid_array_append(&skiplist, &oid); |
cd94c6f9 | 167 | if (sorted && skiplist.nr > 1 && |
ee3051bd | 168 | oidcmp(&skiplist.oid[skiplist.nr - 2], |
169 | &oid) > 0) | |
cd94c6f9 JS |
170 | sorted = 0; |
171 | } | |
172 | close(fd); | |
173 | ||
174 | if (sorted) | |
175 | skiplist.sorted = 1; | |
176 | } | |
177 | ||
0282f4dc JS |
178 | static int parse_msg_type(const char *str) |
179 | { | |
180 | if (!strcmp(str, "error")) | |
181 | return FSCK_ERROR; | |
182 | else if (!strcmp(str, "warn")) | |
183 | return FSCK_WARN; | |
efaba7cc JS |
184 | else if (!strcmp(str, "ignore")) |
185 | return FSCK_IGNORE; | |
0282f4dc JS |
186 | else |
187 | die("Unknown fsck message type: '%s'", str); | |
188 | } | |
189 | ||
5d477a33 JS |
190 | int is_valid_msg_type(const char *msg_id, const char *msg_type) |
191 | { | |
192 | if (parse_msg_id(msg_id) < 0) | |
193 | return 0; | |
194 | parse_msg_type(msg_type); | |
195 | return 1; | |
196 | } | |
197 | ||
0282f4dc JS |
198 | void fsck_set_msg_type(struct fsck_options *options, |
199 | const char *msg_id, const char *msg_type) | |
200 | { | |
201 | int id = parse_msg_id(msg_id), type; | |
202 | ||
203 | if (id < 0) | |
204 | die("Unhandled message id: %s", msg_id); | |
205 | type = parse_msg_type(msg_type); | |
206 | ||
f50c4407 JS |
207 | if (type != FSCK_ERROR && msg_id_info[id].msg_type == FSCK_FATAL) |
208 | die("Cannot demote %s to %s", msg_id, msg_type); | |
209 | ||
0282f4dc JS |
210 | if (!options->msg_type) { |
211 | int i; | |
b32fa95f JK |
212 | int *msg_type; |
213 | ALLOC_ARRAY(msg_type, FSCK_MSG_MAX); | |
0282f4dc JS |
214 | for (i = 0; i < FSCK_MSG_MAX; i++) |
215 | msg_type[i] = fsck_msg_type(i, options); | |
216 | options->msg_type = msg_type; | |
217 | } | |
218 | ||
219 | options->msg_type[id] = type; | |
220 | } | |
221 | ||
222 | void fsck_set_msg_types(struct fsck_options *options, const char *values) | |
223 | { | |
224 | char *buf = xstrdup(values), *to_free = buf; | |
225 | int done = 0; | |
226 | ||
227 | while (!done) { | |
228 | int len = strcspn(buf, " ,|"), equal; | |
229 | ||
230 | done = !buf[len]; | |
231 | if (!len) { | |
232 | buf++; | |
233 | continue; | |
234 | } | |
235 | buf[len] = '\0'; | |
236 | ||
237 | for (equal = 0; | |
238 | equal < len && buf[equal] != '=' && buf[equal] != ':'; | |
239 | equal++) | |
240 | buf[equal] = tolower(buf[equal]); | |
241 | buf[equal] = '\0'; | |
242 | ||
cd94c6f9 JS |
243 | if (!strcmp(buf, "skiplist")) { |
244 | if (equal == len) | |
245 | die("skiplist requires a path"); | |
246 | init_skiplist(options, buf + equal + 1); | |
247 | buf += len + 1; | |
248 | continue; | |
249 | } | |
250 | ||
0282f4dc JS |
251 | if (equal == len) |
252 | die("Missing '=': '%s'", buf); | |
355885d5 | 253 | |
0282f4dc JS |
254 | fsck_set_msg_type(options, buf, buf + equal + 1); |
255 | buf += len + 1; | |
256 | } | |
257 | free(to_free); | |
258 | } | |
259 | ||
71ab8fa8 JS |
260 | static void append_msg_id(struct strbuf *sb, const char *msg_id) |
261 | { | |
262 | for (;;) { | |
263 | char c = *(msg_id)++; | |
264 | ||
265 | if (!c) | |
266 | break; | |
267 | if (c != '_') | |
268 | strbuf_addch(sb, tolower(c)); | |
269 | else { | |
270 | assert(*msg_id); | |
271 | strbuf_addch(sb, *(msg_id)++); | |
272 | } | |
273 | } | |
274 | ||
275 | strbuf_addstr(sb, ": "); | |
276 | } | |
277 | ||
c99ba492 JS |
278 | __attribute__((format (printf, 4, 5))) |
279 | static int report(struct fsck_options *options, struct object *object, | |
280 | enum fsck_msg_id id, const char *fmt, ...) | |
281 | { | |
282 | va_list ap; | |
283 | struct strbuf sb = STRBUF_INIT; | |
284 | int msg_type = fsck_msg_type(id, options), result; | |
285 | ||
efaba7cc JS |
286 | if (msg_type == FSCK_IGNORE) |
287 | return 0; | |
288 | ||
cd94c6f9 | 289 | if (options->skiplist && object && |
910650d2 | 290 | oid_array_lookup(options->skiplist, &object->oid) >= 0) |
cd94c6f9 JS |
291 | return 0; |
292 | ||
f50c4407 JS |
293 | if (msg_type == FSCK_FATAL) |
294 | msg_type = FSCK_ERROR; | |
f27d05b1 JS |
295 | else if (msg_type == FSCK_INFO) |
296 | msg_type = FSCK_WARN; | |
f50c4407 | 297 | |
71ab8fa8 JS |
298 | append_msg_id(&sb, msg_id_info[id].id_string); |
299 | ||
c99ba492 JS |
300 | va_start(ap, fmt); |
301 | strbuf_vaddf(&sb, fmt, ap); | |
1cd772cc | 302 | result = options->error_func(options, object, msg_type, sb.buf); |
c99ba492 JS |
303 | strbuf_release(&sb); |
304 | va_end(ap); | |
305 | ||
306 | return result; | |
307 | } | |
308 | ||
7b35efd7 JS |
309 | static char *get_object_name(struct fsck_options *options, struct object *obj) |
310 | { | |
311 | if (!options->object_names) | |
312 | return NULL; | |
313 | return lookup_decoration(options->object_names, obj); | |
314 | } | |
315 | ||
316 | static void put_object_name(struct fsck_options *options, struct object *obj, | |
317 | const char *fmt, ...) | |
318 | { | |
319 | va_list ap; | |
320 | struct strbuf buf = STRBUF_INIT; | |
321 | char *existing; | |
322 | ||
323 | if (!options->object_names) | |
324 | return; | |
325 | existing = lookup_decoration(options->object_names, obj); | |
326 | if (existing) | |
327 | return; | |
328 | va_start(ap, fmt); | |
329 | strbuf_vaddf(&buf, fmt, ap); | |
330 | add_decoration(options->object_names, obj, strbuf_detach(&buf, NULL)); | |
331 | va_end(ap); | |
332 | } | |
333 | ||
90cf590f JS |
334 | static const char *describe_object(struct fsck_options *o, struct object *obj) |
335 | { | |
336 | static struct strbuf buf = STRBUF_INIT; | |
337 | char *name; | |
338 | ||
339 | strbuf_reset(&buf); | |
340 | strbuf_addstr(&buf, oid_to_hex(&obj->oid)); | |
341 | if (o->object_names && (name = lookup_decoration(o->object_names, obj))) | |
342 | strbuf_addf(&buf, " (%s)", name); | |
343 | ||
344 | return buf.buf; | |
345 | } | |
346 | ||
22410549 | 347 | static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *options) |
355885d5 MK |
348 | { |
349 | struct tree_desc desc; | |
350 | struct name_entry entry; | |
351 | int res = 0; | |
7b35efd7 | 352 | const char *name; |
355885d5 MK |
353 | |
354 | if (parse_tree(tree)) | |
355 | return -1; | |
356 | ||
7b35efd7 | 357 | name = get_object_name(options, &tree->object); |
8354fa3d DT |
358 | if (init_tree_desc_gently(&desc, tree->buffer, tree->size)) |
359 | return -1; | |
360 | while (tree_entry_gently(&desc, &entry)) { | |
7b35efd7 | 361 | struct object *obj; |
355885d5 MK |
362 | int result; |
363 | ||
364 | if (S_ISGITLINK(entry.mode)) | |
365 | continue; | |
7b35efd7 JS |
366 | |
367 | if (S_ISDIR(entry.mode)) { | |
2720f6db RS |
368 | obj = (struct object *)lookup_tree(entry.oid); |
369 | if (name && obj) | |
7b35efd7 JS |
370 | put_object_name(options, obj, "%s%s/", name, |
371 | entry.path); | |
372 | result = options->walk(obj, OBJ_TREE, data, options); | |
373 | } | |
374 | else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) { | |
2720f6db RS |
375 | obj = (struct object *)lookup_blob(entry.oid); |
376 | if (name && obj) | |
7b35efd7 JS |
377 | put_object_name(options, obj, "%s%s", name, |
378 | entry.path); | |
379 | result = options->walk(obj, OBJ_BLOB, data, options); | |
380 | } | |
355885d5 | 381 | else { |
82247e9b | 382 | result = error("in tree %s: entry %s has bad mode %.6o", |
90cf590f | 383 | describe_object(options, &tree->object), entry.path, entry.mode); |
355885d5 MK |
384 | } |
385 | if (result < 0) | |
386 | return result; | |
387 | if (!res) | |
388 | res = result; | |
389 | } | |
390 | return res; | |
391 | } | |
392 | ||
22410549 | 393 | static int fsck_walk_commit(struct commit *commit, void *data, struct fsck_options *options) |
355885d5 | 394 | { |
7b35efd7 | 395 | int counter = 0, generation = 0, name_prefix_len = 0; |
355885d5 MK |
396 | struct commit_list *parents; |
397 | int res; | |
398 | int result; | |
7b35efd7 | 399 | const char *name; |
355885d5 MK |
400 | |
401 | if (parse_commit(commit)) | |
402 | return -1; | |
403 | ||
7b35efd7 JS |
404 | name = get_object_name(options, &commit->object); |
405 | if (name) | |
406 | put_object_name(options, &commit->tree->object, "%s:", name); | |
407 | ||
22410549 | 408 | result = options->walk((struct object *)commit->tree, OBJ_TREE, data, options); |
355885d5 MK |
409 | if (result < 0) |
410 | return result; | |
411 | res = result; | |
412 | ||
413 | parents = commit->parents; | |
7b35efd7 JS |
414 | if (name && parents) { |
415 | int len = strlen(name), power; | |
416 | ||
417 | if (len && name[len - 1] == '^') { | |
418 | generation = 1; | |
419 | name_prefix_len = len - 1; | |
420 | } | |
421 | else { /* parse ~<generation> suffix */ | |
422 | for (generation = 0, power = 1; | |
423 | len && isdigit(name[len - 1]); | |
424 | power *= 10) | |
425 | generation += power * (name[--len] - '0'); | |
426 | if (power > 1 && len && name[len - 1] == '~') | |
427 | name_prefix_len = len - 1; | |
428 | } | |
429 | } | |
430 | ||
355885d5 | 431 | while (parents) { |
7b35efd7 JS |
432 | if (name) { |
433 | struct object *obj = &parents->item->object; | |
434 | ||
435 | if (++counter > 1) | |
436 | put_object_name(options, obj, "%s^%d", | |
437 | name, counter); | |
438 | else if (generation > 0) | |
439 | put_object_name(options, obj, "%.*s~%d", | |
440 | name_prefix_len, name, generation + 1); | |
441 | else | |
442 | put_object_name(options, obj, "%s^", name); | |
443 | } | |
22410549 | 444 | result = options->walk((struct object *)parents->item, OBJ_COMMIT, data, options); |
355885d5 MK |
445 | if (result < 0) |
446 | return result; | |
447 | if (!res) | |
448 | res = result; | |
449 | parents = parents->next; | |
450 | } | |
451 | return res; | |
452 | } | |
453 | ||
22410549 | 454 | static int fsck_walk_tag(struct tag *tag, void *data, struct fsck_options *options) |
355885d5 | 455 | { |
7b35efd7 JS |
456 | char *name = get_object_name(options, &tag->object); |
457 | ||
355885d5 MK |
458 | if (parse_tag(tag)) |
459 | return -1; | |
7b35efd7 JS |
460 | if (name) |
461 | put_object_name(options, tag->tagged, "%s", name); | |
22410549 | 462 | return options->walk(tag->tagged, OBJ_ANY, data, options); |
355885d5 MK |
463 | } |
464 | ||
22410549 | 465 | int fsck_walk(struct object *obj, void *data, struct fsck_options *options) |
355885d5 MK |
466 | { |
467 | if (!obj) | |
468 | return -1; | |
a2b22854 JK |
469 | |
470 | if (obj->type == OBJ_NONE) | |
c251c83d | 471 | parse_object(&obj->oid); |
a2b22854 | 472 | |
355885d5 MK |
473 | switch (obj->type) { |
474 | case OBJ_BLOB: | |
475 | return 0; | |
476 | case OBJ_TREE: | |
22410549 | 477 | return fsck_walk_tree((struct tree *)obj, data, options); |
355885d5 | 478 | case OBJ_COMMIT: |
22410549 | 479 | return fsck_walk_commit((struct commit *)obj, data, options); |
355885d5 | 480 | case OBJ_TAG: |
22410549 | 481 | return fsck_walk_tag((struct tag *)obj, data, options); |
355885d5 | 482 | default: |
90cf590f | 483 | error("Unknown object type for %s", describe_object(options, obj)); |
355885d5 MK |
484 | return -1; |
485 | } | |
486 | } | |
ba002f3b MK |
487 | |
488 | /* | |
489 | * The entries in a tree are ordered in the _path_ order, | |
490 | * which means that a directory entry is ordered by adding | |
491 | * a slash to the end of it. | |
492 | * | |
493 | * So a directory called "a" is ordered _after_ a file | |
494 | * called "a.c", because "a/" sorts after "a.c". | |
495 | */ | |
496 | #define TREE_UNORDERED (-1) | |
497 | #define TREE_HAS_DUPS (-2) | |
498 | ||
499 | static int verify_ordered(unsigned mode1, const char *name1, unsigned mode2, const char *name2) | |
500 | { | |
501 | int len1 = strlen(name1); | |
502 | int len2 = strlen(name2); | |
503 | int len = len1 < len2 ? len1 : len2; | |
504 | unsigned char c1, c2; | |
505 | int cmp; | |
506 | ||
507 | cmp = memcmp(name1, name2, len); | |
508 | if (cmp < 0) | |
509 | return 0; | |
510 | if (cmp > 0) | |
511 | return TREE_UNORDERED; | |
512 | ||
513 | /* | |
514 | * Ok, the first <len> characters are the same. | |
515 | * Now we need to order the next one, but turn | |
516 | * a '\0' into a '/' for a directory entry. | |
517 | */ | |
518 | c1 = name1[len]; | |
519 | c2 = name2[len]; | |
520 | if (!c1 && !c2) | |
521 | /* | |
522 | * git-write-tree used to write out a nonsense tree that has | |
523 | * entries with the same name, one blob and one tree. Make | |
524 | * sure we do not have duplicate entries. | |
525 | */ | |
526 | return TREE_HAS_DUPS; | |
527 | if (!c1 && S_ISDIR(mode1)) | |
528 | c1 = '/'; | |
529 | if (!c2 && S_ISDIR(mode2)) | |
530 | c2 = '/'; | |
531 | return c1 < c2 ? 0 : TREE_UNORDERED; | |
532 | } | |
533 | ||
22410549 | 534 | static int fsck_tree(struct tree *item, struct fsck_options *options) |
ba002f3b | 535 | { |
8354fa3d | 536 | int retval = 0; |
c479d14a | 537 | int has_null_sha1 = 0; |
ba002f3b MK |
538 | int has_full_path = 0; |
539 | int has_empty_name = 0; | |
5d34a435 JK |
540 | int has_dot = 0; |
541 | int has_dotdot = 0; | |
5c17f512 | 542 | int has_dotgit = 0; |
ba002f3b MK |
543 | int has_zero_pad = 0; |
544 | int has_bad_modes = 0; | |
545 | int has_dup_entries = 0; | |
546 | int not_properly_sorted = 0; | |
547 | struct tree_desc desc; | |
548 | unsigned o_mode; | |
549 | const char *o_name; | |
ba002f3b | 550 | |
8354fa3d DT |
551 | if (init_tree_desc_gently(&desc, item->buffer, item->size)) { |
552 | retval += report(options, &item->object, FSCK_MSG_BAD_TREE, "cannot be parsed as a tree"); | |
553 | return retval; | |
554 | } | |
ba002f3b MK |
555 | |
556 | o_mode = 0; | |
557 | o_name = NULL; | |
ba002f3b MK |
558 | |
559 | while (desc.size) { | |
560 | unsigned mode; | |
561 | const char *name; | |
ce6663a9 | 562 | const struct object_id *oid; |
ba002f3b | 563 | |
ce6663a9 | 564 | oid = tree_entry_extract(&desc, &name, &mode); |
ba002f3b | 565 | |
ce6663a9 | 566 | has_null_sha1 |= is_null_oid(oid); |
effd12ec HS |
567 | has_full_path |= !!strchr(name, '/'); |
568 | has_empty_name |= !*name; | |
569 | has_dot |= !strcmp(name, "."); | |
570 | has_dotdot |= !strcmp(name, ".."); | |
ed9c3220 | 571 | has_dotgit |= is_hfs_dotgit(name) || is_ntfs_dotgit(name); |
ba002f3b | 572 | has_zero_pad |= *(char *)desc.buffer == '0'; |
159e7b08 JK |
573 | |
574 | if (is_hfs_dotgitmodules(name) || is_ntfs_dotgitmodules(name)) | |
575 | oidset_insert(&gitmodules_found, oid); | |
576 | ||
8354fa3d DT |
577 | if (update_tree_entry_gently(&desc)) { |
578 | retval += report(options, &item->object, FSCK_MSG_BAD_TREE, "cannot be parsed as a tree"); | |
579 | break; | |
580 | } | |
ba002f3b MK |
581 | |
582 | switch (mode) { | |
583 | /* | |
584 | * Standard modes.. | |
585 | */ | |
586 | case S_IFREG | 0755: | |
587 | case S_IFREG | 0644: | |
588 | case S_IFLNK: | |
589 | case S_IFDIR: | |
590 | case S_IFGITLINK: | |
591 | break; | |
592 | /* | |
593 | * This is nonstandard, but we had a few of these | |
594 | * early on when we honored the full set of mode | |
595 | * bits.. | |
596 | */ | |
597 | case S_IFREG | 0664: | |
22410549 | 598 | if (!options->strict) |
ba002f3b | 599 | break; |
1cf01a34 | 600 | /* fallthrough */ |
ba002f3b MK |
601 | default: |
602 | has_bad_modes = 1; | |
603 | } | |
604 | ||
605 | if (o_name) { | |
606 | switch (verify_ordered(o_mode, o_name, mode, name)) { | |
607 | case TREE_UNORDERED: | |
608 | not_properly_sorted = 1; | |
609 | break; | |
610 | case TREE_HAS_DUPS: | |
611 | has_dup_entries = 1; | |
612 | break; | |
613 | default: | |
614 | break; | |
615 | } | |
616 | } | |
617 | ||
618 | o_mode = mode; | |
619 | o_name = name; | |
ba002f3b MK |
620 | } |
621 | ||
c479d14a | 622 | if (has_null_sha1) |
c99ba492 | 623 | retval += report(options, &item->object, FSCK_MSG_NULL_SHA1, "contains entries pointing to null sha1"); |
ba002f3b | 624 | if (has_full_path) |
c99ba492 | 625 | retval += report(options, &item->object, FSCK_MSG_FULL_PATHNAME, "contains full pathnames"); |
ba002f3b | 626 | if (has_empty_name) |
c99ba492 | 627 | retval += report(options, &item->object, FSCK_MSG_EMPTY_NAME, "contains empty pathname"); |
5d34a435 | 628 | if (has_dot) |
c99ba492 | 629 | retval += report(options, &item->object, FSCK_MSG_HAS_DOT, "contains '.'"); |
5d34a435 | 630 | if (has_dotdot) |
c99ba492 | 631 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTDOT, "contains '..'"); |
5c17f512 | 632 | if (has_dotgit) |
c99ba492 | 633 | retval += report(options, &item->object, FSCK_MSG_HAS_DOTGIT, "contains '.git'"); |
ba002f3b | 634 | if (has_zero_pad) |
c99ba492 | 635 | retval += report(options, &item->object, FSCK_MSG_ZERO_PADDED_FILEMODE, "contains zero-padded file modes"); |
ba002f3b | 636 | if (has_bad_modes) |
c99ba492 | 637 | retval += report(options, &item->object, FSCK_MSG_BAD_FILEMODE, "contains bad file modes"); |
ba002f3b | 638 | if (has_dup_entries) |
c99ba492 | 639 | retval += report(options, &item->object, FSCK_MSG_DUPLICATE_ENTRIES, "contains duplicate file entries"); |
ba002f3b | 640 | if (not_properly_sorted) |
c99ba492 | 641 | retval += report(options, &item->object, FSCK_MSG_TREE_NOT_SORTED, "not properly sorted"); |
ba002f3b MK |
642 | return retval; |
643 | } | |
644 | ||
84d18c0b | 645 | static int verify_headers(const void *data, unsigned long size, |
b2f44feb | 646 | struct object *obj, struct fsck_options *options) |
4d0d8975 JS |
647 | { |
648 | const char *buffer = (const char *)data; | |
649 | unsigned long i; | |
650 | ||
651 | for (i = 0; i < size; i++) { | |
652 | switch (buffer[i]) { | |
653 | case '\0': | |
c99ba492 JS |
654 | return report(options, obj, |
655 | FSCK_MSG_NUL_IN_HEADER, | |
656 | "unterminated header: NUL at offset %ld", i); | |
4d0d8975 JS |
657 | case '\n': |
658 | if (i + 1 < size && buffer[i + 1] == '\n') | |
659 | return 0; | |
660 | } | |
661 | } | |
662 | ||
84d18c0b JH |
663 | /* |
664 | * We did not find double-LF that separates the header | |
665 | * and the body. Not having a body is not a crime but | |
666 | * we do want to see the terminating LF for the last header | |
667 | * line. | |
668 | */ | |
669 | if (size && buffer[size - 1] == '\n') | |
670 | return 0; | |
671 | ||
c99ba492 JS |
672 | return report(options, obj, |
673 | FSCK_MSG_UNTERMINATED_HEADER, "unterminated header"); | |
4d0d8975 JS |
674 | } |
675 | ||
22410549 | 676 | static int fsck_ident(const char **ident, struct object *obj, struct fsck_options *options) |
daae1922 | 677 | { |
e6826e33 | 678 | const char *p = *ident; |
d4b8de04 JK |
679 | char *end; |
680 | ||
e6826e33 JS |
681 | *ident = strchrnul(*ident, '\n'); |
682 | if (**ident == '\n') | |
683 | (*ident)++; | |
684 | ||
685 | if (*p == '<') | |
c99ba492 | 686 | return report(options, obj, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
687 | p += strcspn(p, "<>\n"); |
688 | if (*p == '>') | |
c99ba492 | 689 | return report(options, obj, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name"); |
e6826e33 | 690 | if (*p != '<') |
c99ba492 | 691 | return report(options, obj, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email"); |
e6826e33 | 692 | if (p[-1] != ' ') |
c99ba492 | 693 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email"); |
e6826e33 JS |
694 | p++; |
695 | p += strcspn(p, "<>\n"); | |
696 | if (*p != '>') | |
c99ba492 | 697 | return report(options, obj, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email"); |
e6826e33 JS |
698 | p++; |
699 | if (*p != ' ') | |
c99ba492 | 700 | return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date"); |
e6826e33 JS |
701 | p++; |
702 | if (*p == '0' && p[1] != ' ') | |
c99ba492 | 703 | return report(options, obj, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date"); |
1aeb7e75 | 704 | if (date_overflows(parse_timestamp(p, &end, 10))) |
c99ba492 | 705 | return report(options, obj, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow"); |
e6826e33 | 706 | if ((end == p || *end != ' ')) |
c99ba492 | 707 | return report(options, obj, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date"); |
e6826e33 JS |
708 | p = end + 1; |
709 | if ((*p != '+' && *p != '-') || | |
710 | !isdigit(p[1]) || | |
711 | !isdigit(p[2]) || | |
712 | !isdigit(p[3]) || | |
713 | !isdigit(p[4]) || | |
714 | (p[5] != '\n')) | |
c99ba492 | 715 | return report(options, obj, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone"); |
e6826e33 | 716 | p += 6; |
daae1922 JN |
717 | return 0; |
718 | } | |
719 | ||
bc6b8fc1 | 720 | static int fsck_commit_buffer(struct commit *commit, const char *buffer, |
22410549 | 721 | unsigned long size, struct fsck_options *options) |
ba002f3b | 722 | { |
ba002f3b MK |
723 | unsigned char tree_sha1[20], sha1[20]; |
724 | struct commit_graft *graft; | |
c9ad147f | 725 | unsigned parent_count, parent_line_count = 0, author_count; |
daae1922 | 726 | int err; |
6d2d780f | 727 | const char *buffer_begin = buffer; |
ba002f3b | 728 | |
b2f44feb | 729 | if (verify_headers(buffer, size, &commit->object, options)) |
4d0d8975 JS |
730 | return -1; |
731 | ||
cf4fff57 | 732 | if (!skip_prefix(buffer, "tree ", &buffer)) |
c99ba492 | 733 | return report(options, &commit->object, FSCK_MSG_MISSING_TREE, "invalid format - expected 'tree' line"); |
b3584761 JS |
734 | if (get_sha1_hex(buffer, tree_sha1) || buffer[40] != '\n') { |
735 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE_SHA1, "invalid 'tree' line format - bad sha1"); | |
736 | if (err) | |
737 | return err; | |
738 | } | |
2d820a61 | 739 | buffer += 41; |
cf4fff57 | 740 | while (skip_prefix(buffer, "parent ", &buffer)) { |
b3584761 JS |
741 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { |
742 | err = report(options, &commit->object, FSCK_MSG_BAD_PARENT_SHA1, "invalid 'parent' line format - bad sha1"); | |
743 | if (err) | |
744 | return err; | |
745 | } | |
2d820a61 | 746 | buffer += 41; |
9d02150c | 747 | parent_line_count++; |
ba002f3b | 748 | } |
8b65a34c | 749 | graft = lookup_commit_graft(&commit->object.oid); |
9d02150c | 750 | parent_count = commit_list_count(commit->parents); |
ba002f3b | 751 | if (graft) { |
9d02150c | 752 | if (graft->nr_parent == -1 && !parent_count) |
ba002f3b | 753 | ; /* shallow commit */ |
b3584761 JS |
754 | else if (graft->nr_parent != parent_count) { |
755 | err = report(options, &commit->object, FSCK_MSG_MISSING_GRAFT, "graft objects missing"); | |
756 | if (err) | |
757 | return err; | |
758 | } | |
ba002f3b | 759 | } else { |
b3584761 JS |
760 | if (parent_count != parent_line_count) { |
761 | err = report(options, &commit->object, FSCK_MSG_MISSING_PARENT, "parent objects missing"); | |
762 | if (err) | |
763 | return err; | |
764 | } | |
ba002f3b | 765 | } |
c9ad147f JS |
766 | author_count = 0; |
767 | while (skip_prefix(buffer, "author ", &buffer)) { | |
768 | author_count++; | |
769 | err = fsck_ident(&buffer, &commit->object, options); | |
770 | if (err) | |
771 | return err; | |
ba002f3b | 772 | } |
c9ad147f JS |
773 | if (author_count < 1) |
774 | err = report(options, &commit->object, FSCK_MSG_MISSING_AUTHOR, "invalid format - expected 'author' line"); | |
775 | else if (author_count > 1) | |
776 | err = report(options, &commit->object, FSCK_MSG_MULTIPLE_AUTHORS, "invalid format - multiple 'author' lines"); | |
daae1922 JN |
777 | if (err) |
778 | return err; | |
cf4fff57 | 779 | if (!skip_prefix(buffer, "committer ", &buffer)) |
c99ba492 | 780 | return report(options, &commit->object, FSCK_MSG_MISSING_COMMITTER, "invalid format - expected 'committer' line"); |
22410549 | 781 | err = fsck_ident(&buffer, &commit->object, options); |
daae1922 JN |
782 | if (err) |
783 | return err; | |
5af29718 JH |
784 | if (!commit->tree) { |
785 | err = report(options, &commit->object, FSCK_MSG_BAD_TREE, "could not load commit's tree %s", sha1_to_hex(tree_sha1)); | |
786 | if (err) | |
787 | return err; | |
788 | } | |
6d2d780f JH |
789 | if (memchr(buffer_begin, '\0', size)) { |
790 | err = report(options, &commit->object, FSCK_MSG_NUL_IN_COMMIT, | |
791 | "NUL byte in the commit object body"); | |
792 | if (err) | |
793 | return err; | |
794 | } | |
ba002f3b MK |
795 | return 0; |
796 | } | |
797 | ||
90a398bb | 798 | static int fsck_commit(struct commit *commit, const char *data, |
22410549 | 799 | unsigned long size, struct fsck_options *options) |
bc6b8fc1 | 800 | { |
90a398bb | 801 | const char *buffer = data ? data : get_commit_buffer(commit, &size); |
22410549 | 802 | int ret = fsck_commit_buffer(commit, buffer, size, options); |
90a398bb JS |
803 | if (!data) |
804 | unuse_commit_buffer(commit, buffer); | |
bc6b8fc1 JK |
805 | return ret; |
806 | } | |
807 | ||
cec097be | 808 | static int fsck_tag_buffer(struct tag *tag, const char *data, |
22410549 | 809 | unsigned long size, struct fsck_options *options) |
cec097be JS |
810 | { |
811 | unsigned char sha1[20]; | |
812 | int ret = 0; | |
813 | const char *buffer; | |
814 | char *to_free = NULL, *eol; | |
815 | struct strbuf sb = STRBUF_INIT; | |
816 | ||
817 | if (data) | |
818 | buffer = data; | |
819 | else { | |
820 | enum object_type type; | |
821 | ||
822 | buffer = to_free = | |
ed1c9977 | 823 | read_sha1_file(tag->object.oid.hash, &type, &size); |
cec097be | 824 | if (!buffer) |
c99ba492 JS |
825 | return report(options, &tag->object, |
826 | FSCK_MSG_MISSING_TAG_OBJECT, | |
cec097be JS |
827 | "cannot read tag object"); |
828 | ||
829 | if (type != OBJ_TAG) { | |
c99ba492 JS |
830 | ret = report(options, &tag->object, |
831 | FSCK_MSG_TAG_OBJECT_NOT_TAG, | |
cec097be | 832 | "expected tag got %s", |
debca9d2 | 833 | type_name(type)); |
cec097be JS |
834 | goto done; |
835 | } | |
836 | } | |
837 | ||
8a272f29 RS |
838 | ret = verify_headers(buffer, size, &tag->object, options); |
839 | if (ret) | |
cec097be JS |
840 | goto done; |
841 | ||
842 | if (!skip_prefix(buffer, "object ", &buffer)) { | |
c99ba492 | 843 | ret = report(options, &tag->object, FSCK_MSG_MISSING_OBJECT, "invalid format - expected 'object' line"); |
cec097be JS |
844 | goto done; |
845 | } | |
846 | if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { | |
c99ba492 | 847 | ret = report(options, &tag->object, FSCK_MSG_BAD_OBJECT_SHA1, "invalid 'object' line format - bad sha1"); |
7d7d5b05 JS |
848 | if (ret) |
849 | goto done; | |
cec097be JS |
850 | } |
851 | buffer += 41; | |
852 | ||
853 | if (!skip_prefix(buffer, "type ", &buffer)) { | |
c99ba492 | 854 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE_ENTRY, "invalid format - expected 'type' line"); |
cec097be JS |
855 | goto done; |
856 | } | |
857 | eol = strchr(buffer, '\n'); | |
858 | if (!eol) { | |
c99ba492 | 859 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
860 | goto done; |
861 | } | |
862 | if (type_from_string_gently(buffer, eol - buffer, 1) < 0) | |
c99ba492 | 863 | ret = report(options, &tag->object, FSCK_MSG_BAD_TYPE, "invalid 'type' value"); |
cec097be JS |
864 | if (ret) |
865 | goto done; | |
866 | buffer = eol + 1; | |
867 | ||
868 | if (!skip_prefix(buffer, "tag ", &buffer)) { | |
c99ba492 | 869 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG_ENTRY, "invalid format - expected 'tag' line"); |
cec097be JS |
870 | goto done; |
871 | } | |
872 | eol = strchr(buffer, '\n'); | |
873 | if (!eol) { | |
c99ba492 | 874 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAG, "invalid format - unexpected end after 'type' line"); |
cec097be JS |
875 | goto done; |
876 | } | |
877 | strbuf_addf(&sb, "refs/tags/%.*s", (int)(eol - buffer), buffer); | |
f27d05b1 JS |
878 | if (check_refname_format(sb.buf, 0)) { |
879 | ret = report(options, &tag->object, FSCK_MSG_BAD_TAG_NAME, | |
c99ba492 | 880 | "invalid 'tag' name: %.*s", |
7add4419 | 881 | (int)(eol - buffer), buffer); |
f27d05b1 JS |
882 | if (ret) |
883 | goto done; | |
884 | } | |
cec097be JS |
885 | buffer = eol + 1; |
886 | ||
f27d05b1 | 887 | if (!skip_prefix(buffer, "tagger ", &buffer)) { |
cec097be | 888 | /* early tags do not contain 'tagger' lines; warn only */ |
f27d05b1 JS |
889 | ret = report(options, &tag->object, FSCK_MSG_MISSING_TAGGER_ENTRY, "invalid format - expected 'tagger' line"); |
890 | if (ret) | |
891 | goto done; | |
892 | } | |
cec097be | 893 | else |
22410549 | 894 | ret = fsck_ident(&buffer, &tag->object, options); |
cec097be JS |
895 | |
896 | done: | |
897 | strbuf_release(&sb); | |
898 | free(to_free); | |
899 | return ret; | |
900 | } | |
901 | ||
90a398bb | 902 | static int fsck_tag(struct tag *tag, const char *data, |
22410549 | 903 | unsigned long size, struct fsck_options *options) |
ba002f3b MK |
904 | { |
905 | struct object *tagged = tag->tagged; | |
906 | ||
907 | if (!tagged) | |
c99ba492 | 908 | return report(options, &tag->object, FSCK_MSG_BAD_TAG_OBJECT, "could not load tagged object"); |
cec097be | 909 | |
22410549 | 910 | return fsck_tag_buffer(tag, data, size, options); |
ba002f3b MK |
911 | } |
912 | ||
7ac4f3a0 JK |
913 | static int fsck_blob(struct blob *blob, const char *buf, |
914 | unsigned long size, struct fsck_options *options) | |
915 | { | |
916 | return 0; | |
917 | } | |
918 | ||
90a398bb | 919 | int fsck_object(struct object *obj, void *data, unsigned long size, |
22410549 | 920 | struct fsck_options *options) |
ba002f3b MK |
921 | { |
922 | if (!obj) | |
c99ba492 | 923 | return report(options, obj, FSCK_MSG_BAD_OBJECT_SHA1, "no valid object to fsck"); |
ba002f3b MK |
924 | |
925 | if (obj->type == OBJ_BLOB) | |
7ac4f3a0 | 926 | return fsck_blob((struct blob *)obj, data, size, options); |
ba002f3b | 927 | if (obj->type == OBJ_TREE) |
22410549 | 928 | return fsck_tree((struct tree *) obj, options); |
ba002f3b | 929 | if (obj->type == OBJ_COMMIT) |
90a398bb | 930 | return fsck_commit((struct commit *) obj, (const char *) data, |
22410549 | 931 | size, options); |
ba002f3b | 932 | if (obj->type == OBJ_TAG) |
90a398bb | 933 | return fsck_tag((struct tag *) obj, (const char *) data, |
22410549 | 934 | size, options); |
ba002f3b | 935 | |
c99ba492 | 936 | return report(options, obj, FSCK_MSG_UNKNOWN_TYPE, "unknown type '%d' (internal fsck error)", |
ba002f3b MK |
937 | obj->type); |
938 | } | |
d6ffc8d7 | 939 | |
1cd772cc JS |
940 | int fsck_error_function(struct fsck_options *o, |
941 | struct object *obj, int msg_type, const char *message) | |
d6ffc8d7 | 942 | { |
0282f4dc | 943 | if (msg_type == FSCK_WARN) { |
90cf590f | 944 | warning("object %s: %s", describe_object(o, obj), message); |
0282f4dc JS |
945 | return 0; |
946 | } | |
90cf590f | 947 | error("object %s: %s", describe_object(o, obj), message); |
d6ffc8d7 MK |
948 | return 1; |
949 | } | |
159e7b08 JK |
950 | |
951 | int fsck_finish(struct fsck_options *options) | |
952 | { | |
953 | int ret = 0; | |
954 | struct oidset_iter iter; | |
955 | const struct object_id *oid; | |
956 | ||
957 | oidset_iter_init(&gitmodules_found, &iter); | |
958 | while ((oid = oidset_iter_next(&iter))) { | |
959 | struct blob *blob; | |
960 | enum object_type type; | |
961 | unsigned long size; | |
962 | char *buf; | |
963 | ||
964 | if (oidset_contains(&gitmodules_done, oid)) | |
965 | continue; | |
966 | ||
967 | blob = lookup_blob(oid); | |
968 | if (!blob) { | |
969 | ret |= report(options, &blob->object, | |
970 | FSCK_MSG_GITMODULES_BLOB, | |
971 | "non-blob found at .gitmodules"); | |
972 | continue; | |
973 | } | |
974 | ||
975 | buf = read_sha1_file(oid->hash, &type, &size); | |
976 | if (!buf) { | |
977 | ret |= report(options, &blob->object, | |
978 | FSCK_MSG_GITMODULES_MISSING, | |
979 | "unable to read .gitmodules blob"); | |
980 | continue; | |
981 | } | |
982 | ||
983 | if (type == OBJ_BLOB) | |
984 | ret |= fsck_blob(blob, buf, size, options); | |
985 | else | |
986 | ret |= report(options, &blob->object, | |
987 | FSCK_MSG_GITMODULES_BLOB, | |
988 | "non-blob found at .gitmodules"); | |
989 | free(buf); | |
990 | } | |
991 | ||
992 | ||
993 | oidset_clear(&gitmodules_found); | |
994 | oidset_clear(&gitmodules_done); | |
995 | return ret; | |
996 | } |