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Commit | Line | Data |
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8f1d2e6f | 1 | #include "cache.h" |
961784ee | 2 | #include "tag.h" |
175785e5 | 3 | #include "commit.h" |
177722b3 | 4 | #include "commit-graph.h" |
41771fa4 | 5 | #include "hex.h" |
6a1a79fd | 6 | #include "repository.h" |
cbd53a21 | 7 | #include "object-store.h" |
ed09aef0 | 8 | #include "pkt-line.h" |
52883fbd | 9 | #include "utf8.h" |
199c45bf JH |
10 | #include "diff.h" |
11 | #include "revision.h" | |
a97a7468 | 12 | #include "notes.h" |
14ba97f8 | 13 | #include "alloc.h" |
ba3c69a9 | 14 | #include "gpg-interface.h" |
46905893 | 15 | #include "mergesort.h" |
a84b794a | 16 | #include "commit-slab.h" |
da24b104 | 17 | #include "prio-queue.h" |
bc626927 | 18 | #include "hash-lookup.h" |
d76650b8 | 19 | #include "wt-status.h" |
f9f99b3f | 20 | #include "advice.h" |
103148aa | 21 | #include "refs.h" |
02931217 | 22 | #include "commit-reach.h" |
49697cb7 | 23 | #include "run-command.h" |
120ad2b0 | 24 | #include "shallow.h" |
f443246b | 25 | #include "hook.h" |
175785e5 | 26 | |
82a75299 JH |
27 | static struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **); |
28 | ||
60ab26de | 29 | int save_commit_buffer = 1; |
ab628588 | 30 | int no_graft_file_deprecated_advice; |
60ab26de | 31 | |
175785e5 DB |
32 | const char *commit_type = "commit"; |
33 | ||
d9a05e74 | 34 | struct commit *lookup_commit_reference_gently(struct repository *r, |
21e1ee8f | 35 | const struct object_id *oid, int quiet) |
961784ee | 36 | { |
d9a05e74 SB |
37 | struct object *obj = deref_tag(r, |
38 | parse_object(r, oid), | |
109cd76d | 39 | NULL, 0); |
961784ee LT |
40 | |
41 | if (!obj) | |
42 | return NULL; | |
6da43d93 | 43 | return object_as_type(obj, OBJ_COMMIT, quiet); |
f76412ed JH |
44 | } |
45 | ||
1f6c72fe | 46 | struct commit *lookup_commit_reference(struct repository *r, const struct object_id *oid) |
f76412ed | 47 | { |
1f6c72fe | 48 | return lookup_commit_reference_gently(r, oid, 0); |
961784ee LT |
49 | } |
50 | ||
bc83266a | 51 | struct commit *lookup_commit_or_die(const struct object_id *oid, const char *ref_name) |
baf18fc2 | 52 | { |
2122f675 | 53 | struct commit *c = lookup_commit_reference(the_repository, oid); |
baf18fc2 NTND |
54 | if (!c) |
55 | die(_("could not parse %s"), ref_name); | |
9001dc2a | 56 | if (!oideq(oid, &c->object.oid)) { |
baf18fc2 | 57 | warning(_("%s %s is not a commit!"), |
bc83266a | 58 | ref_name, oid_to_hex(oid)); |
baf18fc2 NTND |
59 | } |
60 | return c; | |
61 | } | |
62 | ||
b8dbfd03 PW |
63 | struct commit *lookup_commit_object(struct repository *r, |
64 | const struct object_id *oid) | |
65 | { | |
66 | struct object *obj = parse_object(r, oid); | |
67 | return obj ? object_as_type(obj, OBJ_COMMIT, 0) : NULL; | |
68 | ||
69 | } | |
70 | ||
bacf1687 | 71 | struct commit *lookup_commit(struct repository *r, const struct object_id *oid) |
175785e5 | 72 | { |
d0229abd | 73 | struct object *obj = lookup_object(r, oid); |
d36f51c1 | 74 | if (!obj) |
a378509e | 75 | return create_object(r, oid, alloc_commit_node(r)); |
6da43d93 | 76 | return object_as_type(obj, OBJ_COMMIT, 0); |
175785e5 DB |
77 | } |
78 | ||
a6fa5992 PN |
79 | struct commit *lookup_commit_reference_by_name(const char *name) |
80 | { | |
7683e2e6 | 81 | struct object_id oid; |
a6fa5992 PN |
82 | struct commit *commit; |
83 | ||
e82caf38 | 84 | if (get_oid_committish(name, &oid)) |
a6fa5992 | 85 | return NULL; |
2122f675 | 86 | commit = lookup_commit_reference(the_repository, &oid); |
5e7d4d3e | 87 | if (parse_commit(commit)) |
a6fa5992 PN |
88 | return NULL; |
89 | return commit; | |
90 | } | |
91 | ||
dddbad72 | 92 | static timestamp_t parse_commit_date(const char *buf, const char *tail) |
175785e5 | 93 | { |
0a617799 | 94 | const char *dateptr; |
175785e5 | 95 | |
0a617799 MK |
96 | if (buf + 6 >= tail) |
97 | return 0; | |
175785e5 DB |
98 | if (memcmp(buf, "author", 6)) |
99 | return 0; | |
0a617799 | 100 | while (buf < tail && *buf++ != '\n') |
175785e5 | 101 | /* nada */; |
0a617799 MK |
102 | if (buf + 9 >= tail) |
103 | return 0; | |
175785e5 DB |
104 | if (memcmp(buf, "committer", 9)) |
105 | return 0; | |
0a617799 | 106 | while (buf < tail && *buf++ != '>') |
175785e5 | 107 | /* nada */; |
0a617799 MK |
108 | if (buf >= tail) |
109 | return 0; | |
110 | dateptr = buf; | |
111 | while (buf < tail && *buf++ != '\n') | |
112 | /* nada */; | |
113 | if (buf >= tail) | |
114 | return 0; | |
1aeb7e75 JS |
115 | /* dateptr < buf && buf[-1] == '\n', so parsing will stop at buf-1 */ |
116 | return parse_timestamp(dateptr, NULL, 10); | |
175785e5 DB |
117 | } |
118 | ||
8380dcd7 | 119 | static const struct object_id *commit_graft_oid_access(size_t index, const void *table) |
0a9136f3 | 120 | { |
8380dcd7 | 121 | const struct commit_graft * const *commit_graft_table = table; |
45ee13b9 | 122 | return &commit_graft_table[index]->oid; |
0a9136f3 DD |
123 | } |
124 | ||
98c431b6 | 125 | int commit_graft_pos(struct repository *r, const struct object_id *oid) |
5da5c8f4 | 126 | { |
45ee13b9 JK |
127 | return oid_pos(oid, r->parsed_objects->grafts, |
128 | r->parsed_objects->grafts_nr, | |
129 | commit_graft_oid_access); | |
5da5c8f4 JH |
130 | } |
131 | ||
4d4e49ff JT |
132 | static void unparse_commit(struct repository *r, const struct object_id *oid) |
133 | { | |
134 | struct commit *c = lookup_commit(r, oid); | |
135 | ||
136 | if (!c->object.parsed) | |
137 | return; | |
138 | free_commit_list(c->parents); | |
139 | c->parents = NULL; | |
140 | c->object.parsed = 0; | |
141 | } | |
142 | ||
a3b78e83 BW |
143 | int register_commit_graft(struct repository *r, struct commit_graft *graft, |
144 | int ignore_dups) | |
5040f17e | 145 | { |
98c431b6 | 146 | int pos = commit_graft_pos(r, &graft->oid); |
a6080a0a | 147 | |
5040f17e JH |
148 | if (0 <= pos) { |
149 | if (ignore_dups) | |
150 | free(graft); | |
151 | else { | |
a3b78e83 BW |
152 | free(r->parsed_objects->grafts[pos]); |
153 | r->parsed_objects->grafts[pos] = graft; | |
5040f17e JH |
154 | } |
155 | return 1; | |
156 | } | |
157 | pos = -pos - 1; | |
a3b78e83 BW |
158 | ALLOC_GROW(r->parsed_objects->grafts, |
159 | r->parsed_objects->grafts_nr + 1, | |
160 | r->parsed_objects->grafts_alloc); | |
161 | r->parsed_objects->grafts_nr++; | |
162 | if (pos < r->parsed_objects->grafts_nr) | |
163 | memmove(r->parsed_objects->grafts + pos + 1, | |
164 | r->parsed_objects->grafts + pos, | |
165 | (r->parsed_objects->grafts_nr - pos - 1) * | |
166 | sizeof(*r->parsed_objects->grafts)); | |
167 | r->parsed_objects->grafts[pos] = graft; | |
4d4e49ff | 168 | unparse_commit(r, &graft->oid); |
5040f17e JH |
169 | return 0; |
170 | } | |
171 | ||
9a934032 | 172 | struct commit_graft *read_graft_line(struct strbuf *line) |
5040f17e JH |
173 | { |
174 | /* The format is just "Commit Parent1 Parent2 ...\n" */ | |
cfa5bf16 PO |
175 | int i, phase; |
176 | const char *tail = NULL; | |
5040f17e | 177 | struct commit_graft *graft = NULL; |
cfa5bf16 | 178 | struct object_id dummy_oid, *oid; |
5040f17e | 179 | |
9a934032 PO |
180 | strbuf_rtrim(line); |
181 | if (!line->len || line->buf[0] == '#') | |
5bc4ce58 | 182 | return NULL; |
cfa5bf16 PO |
183 | /* |
184 | * phase 0 verifies line, counts hashes in line and allocates graft | |
185 | * phase 1 fills graft | |
186 | */ | |
187 | for (phase = 0; phase < 2; phase++) { | |
188 | oid = graft ? &graft->oid : &dummy_oid; | |
189 | if (parse_oid_hex(line->buf, oid, &tail)) | |
5040f17e | 190 | goto bad_graft_data; |
cfa5bf16 PO |
191 | for (i = 0; *tail != '\0'; i++) { |
192 | oid = graft ? &graft->parent[i] : &dummy_oid; | |
193 | if (!isspace(*tail++) || parse_oid_hex(tail, oid, &tail)) | |
194 | goto bad_graft_data; | |
195 | } | |
196 | if (!graft) { | |
197 | graft = xmalloc(st_add(sizeof(*graft), | |
198 | st_mult(sizeof(struct object_id), i))); | |
199 | graft->nr_parent = i; | |
200 | } | |
5040f17e JH |
201 | } |
202 | return graft; | |
df5d43be RT |
203 | |
204 | bad_graft_data: | |
9a934032 | 205 | error("bad graft data: %s", line->buf); |
cfa5bf16 | 206 | assert(!graft); |
df5d43be | 207 | return NULL; |
5040f17e JH |
208 | } |
209 | ||
d0e5dd0e | 210 | static int read_graft_file(struct repository *r, const char *graft_file) |
5da5c8f4 | 211 | { |
e9d983f1 | 212 | FILE *fp = fopen_or_warn(graft_file, "r"); |
e228c173 | 213 | struct strbuf buf = STRBUF_INIT; |
5040f17e JH |
214 | if (!fp) |
215 | return -1; | |
ab628588 ÆAB |
216 | if (!no_graft_file_deprecated_advice && |
217 | advice_enabled(ADVICE_GRAFT_FILE_DEPRECATED)) | |
f9f99b3f JS |
218 | advise(_("Support for <GIT_DIR>/info/grafts is deprecated\n" |
219 | "and will be removed in a future Git version.\n" | |
220 | "\n" | |
221 | "Please use \"git replace --convert-graft-file\"\n" | |
222 | "to convert the grafts into replace refs.\n" | |
223 | "\n" | |
224 | "Turn this message off by running\n" | |
225 | "\"git config advice.graftFileDeprecated false\"")); | |
e228c173 | 226 | while (!strbuf_getwholeline(&buf, fp, '\n')) { |
5da5c8f4 | 227 | /* The format is just "Commit Parent1 Parent2 ...\n" */ |
9a934032 | 228 | struct commit_graft *graft = read_graft_line(&buf); |
5bc4ce58 JH |
229 | if (!graft) |
230 | continue; | |
d0e5dd0e | 231 | if (register_commit_graft(r, graft, 1)) |
e228c173 | 232 | error("duplicate graft data: %s", buf.buf); |
5da5c8f4 JH |
233 | } |
234 | fclose(fp); | |
e228c173 | 235 | strbuf_release(&buf); |
5040f17e JH |
236 | return 0; |
237 | } | |
238 | ||
20fd6d57 | 239 | void prepare_commit_graft(struct repository *r) |
5040f17e | 240 | { |
5040f17e JH |
241 | char *graft_file; |
242 | ||
2f6c767f | 243 | if (r->parsed_objects->commit_graft_prepared) |
5040f17e | 244 | return; |
14a9bd28 JK |
245 | if (!startup_info->have_repository) |
246 | return; | |
247 | ||
2f6c767f SB |
248 | graft_file = get_graft_file(r); |
249 | read_graft_file(r, graft_file); | |
ed09aef0 | 250 | /* make sure shallows are read */ |
2f6c767f SB |
251 | is_repository_shallow(r); |
252 | r->parsed_objects->commit_graft_prepared = 1; | |
5da5c8f4 JH |
253 | } |
254 | ||
b9dbddf6 | 255 | struct commit_graft *lookup_commit_graft(struct repository *r, const struct object_id *oid) |
5da5c8f4 JH |
256 | { |
257 | int pos; | |
b9dbddf6 | 258 | prepare_commit_graft(r); |
98c431b6 | 259 | pos = commit_graft_pos(r, oid); |
5da5c8f4 JH |
260 | if (pos < 0) |
261 | return NULL; | |
b9dbddf6 | 262 | return r->parsed_objects->grafts[pos]; |
5da5c8f4 JH |
263 | } |
264 | ||
09d46644 | 265 | int for_each_commit_graft(each_commit_graft_fn fn, void *cb_data) |
ed09aef0 | 266 | { |
09d46644 | 267 | int i, ret; |
6a1a79fd JN |
268 | for (i = ret = 0; i < the_repository->parsed_objects->grafts_nr && !ret; i++) |
269 | ret = fn(the_repository->parsed_objects->grafts[i], cb_data); | |
09d46644 | 270 | return ret; |
ed09aef0 JS |
271 | } |
272 | ||
2a69ff09 JT |
273 | void reset_commit_grafts(struct repository *r) |
274 | { | |
275 | int i; | |
276 | ||
4d4e49ff JT |
277 | for (i = 0; i < r->parsed_objects->grafts_nr; i++) { |
278 | unparse_commit(r, &r->parsed_objects->grafts[i]->oid); | |
2a69ff09 | 279 | free(r->parsed_objects->grafts[i]); |
4d4e49ff | 280 | } |
2a69ff09 JT |
281 | r->parsed_objects->grafts_nr = 0; |
282 | r->parsed_objects->commit_graft_prepared = 0; | |
283 | } | |
284 | ||
8597ea3a JK |
285 | struct commit_buffer { |
286 | void *buffer; | |
287 | unsigned long size; | |
288 | }; | |
289 | define_commit_slab(buffer_slab, struct commit_buffer); | |
c1b3c71f | 290 | |
65ea9d4b | 291 | struct buffer_slab *allocate_commit_buffer_slab(void) |
66c2827e | 292 | { |
65ea9d4b SB |
293 | struct buffer_slab *bs = xmalloc(sizeof(*bs)); |
294 | init_buffer_slab(bs); | |
295 | return bs; | |
296 | } | |
297 | ||
298 | void free_commit_buffer_slab(struct buffer_slab *bs) | |
299 | { | |
300 | clear_buffer_slab(bs); | |
301 | free(bs); | |
302 | } | |
c1b3c71f | 303 | |
1a40fc45 | 304 | void set_commit_buffer(struct repository *r, struct commit *commit, void *buffer, unsigned long size) |
66c2827e | 305 | { |
65ea9d4b | 306 | struct commit_buffer *v = buffer_slab_at( |
1a40fc45 | 307 | r->parsed_objects->buffer_slab, commit); |
8597ea3a JK |
308 | v->buffer = buffer; |
309 | v->size = size; | |
66c2827e JK |
310 | } |
311 | ||
4ff7e5c9 | 312 | const void *get_cached_commit_buffer(struct repository *r, const struct commit *commit, unsigned long *sizep) |
152ff1cc | 313 | { |
65ea9d4b | 314 | struct commit_buffer *v = buffer_slab_peek( |
4ff7e5c9 | 315 | r->parsed_objects->buffer_slab, commit); |
862e730e JH |
316 | if (!v) { |
317 | if (sizep) | |
318 | *sizep = 0; | |
319 | return NULL; | |
320 | } | |
8597ea3a JK |
321 | if (sizep) |
322 | *sizep = v->size; | |
323 | return v->buffer; | |
152ff1cc JK |
324 | } |
325 | ||
07de3fd8 SB |
326 | const void *repo_get_commit_buffer(struct repository *r, |
327 | const struct commit *commit, | |
328 | unsigned long *sizep) | |
152ff1cc | 329 | { |
07de3fd8 | 330 | const void *ret = get_cached_commit_buffer(r, commit, sizep); |
152ff1cc JK |
331 | if (!ret) { |
332 | enum object_type type; | |
333 | unsigned long size; | |
07de3fd8 | 334 | ret = repo_read_object_file(r, &commit->object.oid, &type, &size); |
152ff1cc JK |
335 | if (!ret) |
336 | die("cannot read commit object %s", | |
f2fd0760 | 337 | oid_to_hex(&commit->object.oid)); |
152ff1cc JK |
338 | if (type != OBJ_COMMIT) |
339 | die("expected commit for %s, got %s", | |
debca9d2 | 340 | oid_to_hex(&commit->object.oid), type_name(type)); |
8597ea3a JK |
341 | if (sizep) |
342 | *sizep = size; | |
152ff1cc JK |
343 | } |
344 | return ret; | |
345 | } | |
346 | ||
70315373 SB |
347 | void repo_unuse_commit_buffer(struct repository *r, |
348 | const struct commit *commit, | |
349 | const void *buffer) | |
152ff1cc | 350 | { |
65ea9d4b | 351 | struct commit_buffer *v = buffer_slab_peek( |
70315373 | 352 | r->parsed_objects->buffer_slab, commit); |
862e730e | 353 | if (!(v && v->buffer == buffer)) |
152ff1cc JK |
354 | free((void *)buffer); |
355 | } | |
356 | ||
6a7895fd | 357 | void free_commit_buffer(struct parsed_object_pool *pool, struct commit *commit) |
0fb370da | 358 | { |
65ea9d4b | 359 | struct commit_buffer *v = buffer_slab_peek( |
6a7895fd | 360 | pool->buffer_slab, commit); |
862e730e | 361 | if (v) { |
6a83d902 | 362 | FREE_AND_NULL(v->buffer); |
862e730e JH |
363 | v->size = 0; |
364 | } | |
0fb370da JK |
365 | } |
366 | ||
a133c40b NTND |
367 | static inline void set_commit_tree(struct commit *c, struct tree *t) |
368 | { | |
369 | c->maybe_tree = t; | |
370 | } | |
371 | ||
301b8c7f NTND |
372 | struct tree *repo_get_commit_tree(struct repository *r, |
373 | const struct commit *commit) | |
5bb03de1 | 374 | { |
7b8a21db DS |
375 | if (commit->maybe_tree || !commit->object.parsed) |
376 | return commit->maybe_tree; | |
377 | ||
c49c82aa | 378 | if (commit_graph_position(commit) != COMMIT_NOT_FROM_GRAPH) |
ea2dab1a | 379 | return get_commit_tree_in_graph(r, commit); |
7b8a21db | 380 | |
83487663 | 381 | return NULL; |
5bb03de1 DS |
382 | } |
383 | ||
384 | struct object_id *get_commit_tree_oid(const struct commit *commit) | |
385 | { | |
806278de TB |
386 | struct tree *tree = get_commit_tree(commit); |
387 | return tree ? &tree->object.oid : NULL; | |
5bb03de1 DS |
388 | } |
389 | ||
6a7895fd | 390 | void release_commit_memory(struct parsed_object_pool *pool, struct commit *c) |
14ba97f8 | 391 | { |
a133c40b | 392 | set_commit_tree(c, NULL); |
6a7895fd | 393 | free_commit_buffer(pool, c); |
9784f973 | 394 | c->index = 0; |
14ba97f8 | 395 | free_commit_list(c->parents); |
14ba97f8 SB |
396 | |
397 | c->object.parsed = 0; | |
398 | } | |
399 | ||
8597ea3a | 400 | const void *detach_commit_buffer(struct commit *commit, unsigned long *sizep) |
0fb370da | 401 | { |
65ea9d4b SB |
402 | struct commit_buffer *v = buffer_slab_peek( |
403 | the_repository->parsed_objects->buffer_slab, commit); | |
8597ea3a JK |
404 | void *ret; |
405 | ||
862e730e JH |
406 | if (!v) { |
407 | if (sizep) | |
408 | *sizep = 0; | |
409 | return NULL; | |
410 | } | |
8597ea3a JK |
411 | ret = v->buffer; |
412 | if (sizep) | |
413 | *sizep = v->size; | |
414 | ||
415 | v->buffer = NULL; | |
416 | v->size = 0; | |
0fb370da JK |
417 | return ret; |
418 | } | |
419 | ||
fd8030c7 | 420 | int parse_commit_buffer(struct repository *r, struct commit *item, const void *buffer, unsigned long size, int check_graph) |
175785e5 | 421 | { |
cf7b1cad NTND |
422 | const char *tail = buffer; |
423 | const char *bufptr = buffer; | |
7683e2e6 | 424 | struct object_id parent; |
6c88be16 | 425 | struct commit_list **pptr; |
5da5c8f4 | 426 | struct commit_graft *graft; |
2770ccbd | 427 | const int tree_entry_len = the_hash_algo->hexsz + 5; |
428 | const int parent_entry_len = the_hash_algo->hexsz + 7; | |
12736d2f | 429 | struct tree *tree; |
bd2c39f5 | 430 | |
175785e5 DB |
431 | if (item->object.parsed) |
432 | return 0; | |
bf20fe4c ÆAB |
433 | /* |
434 | * Presumably this is leftover from an earlier failed parse; | |
435 | * clear it out in preparation for us re-parsing (we'll hit the | |
436 | * same error, but that's good, since it lets our caller know | |
437 | * the result cannot be trusted. | |
438 | */ | |
439 | free_commit_list(item->parents); | |
440 | item->parents = NULL; | |
228c78fb | 441 | |
3b44f15a | 442 | tail += size; |
7683e2e6 | 443 | if (tail <= bufptr + tree_entry_len + 1 || memcmp(bufptr, "tree ", 5) || |
444 | bufptr[tree_entry_len] != '\n') | |
f2fd0760 | 445 | return error("bogus commit object %s", oid_to_hex(&item->object.oid)); |
26ea3e7d | 446 | if (get_oid_hex(bufptr + 5, &parent) < 0) |
bd2afde8 | 447 | return error("bad tree pointer in commit %s", |
f2fd0760 | 448 | oid_to_hex(&item->object.oid)); |
12736d2f JK |
449 | tree = lookup_tree(r, &parent); |
450 | if (!tree) | |
451 | return error("bad tree pointer %s in commit %s", | |
452 | oid_to_hex(&parent), | |
453 | oid_to_hex(&item->object.oid)); | |
454 | set_commit_tree(item, tree); | |
7683e2e6 | 455 | bufptr += tree_entry_len + 1; /* "tree " + "hex sha1" + "\n" */ |
6c88be16 | 456 | pptr = &item->parents; |
5da5c8f4 | 457 | |
fd8030c7 | 458 | graft = lookup_commit_graft(r, &item->object.oid); |
ce16364e TB |
459 | if (graft) |
460 | r->parsed_objects->substituted_parent = 1; | |
7683e2e6 | 461 | while (bufptr + parent_entry_len < tail && !memcmp(bufptr, "parent ", 7)) { |
f7cc77d7 LT |
462 | struct commit *new_parent; |
463 | ||
7683e2e6 | 464 | if (tail <= bufptr + parent_entry_len + 1 || |
26ea3e7d | 465 | get_oid_hex(bufptr + 7, &parent) || |
7683e2e6 | 466 | bufptr[parent_entry_len] != '\n') |
f2fd0760 | 467 | return error("bad parents in commit %s", oid_to_hex(&item->object.oid)); |
7683e2e6 | 468 | bufptr += parent_entry_len + 1; |
7f3140cd JS |
469 | /* |
470 | * The clone is shallow if nr_parent < 0, and we must | |
471 | * not traverse its real parents even when we unhide them. | |
472 | */ | |
473 | if (graft && (graft->nr_parent < 0 || grafts_replace_parents)) | |
5da5c8f4 | 474 | continue; |
fd8030c7 | 475 | new_parent = lookup_commit(r, &parent); |
c78fe004 JK |
476 | if (!new_parent) |
477 | return error("bad parent %s in commit %s", | |
478 | oid_to_hex(&parent), | |
479 | oid_to_hex(&item->object.oid)); | |
480 | pptr = &commit_list_insert(new_parent, pptr)->next; | |
5da5c8f4 JH |
481 | } |
482 | if (graft) { | |
483 | int i; | |
484 | struct commit *new_parent; | |
485 | for (i = 0; i < graft->nr_parent; i++) { | |
fd8030c7 | 486 | new_parent = lookup_commit(r, |
c1f5eb49 | 487 | &graft->parent[i]); |
5da5c8f4 | 488 | if (!new_parent) |
c78fe004 JK |
489 | return error("bad graft parent %s in commit %s", |
490 | oid_to_hex(&graft->parent[i]), | |
491 | oid_to_hex(&item->object.oid)); | |
5da5c8f4 | 492 | pptr = &commit_list_insert(new_parent, pptr)->next; |
5da5c8f4 | 493 | } |
175785e5 | 494 | } |
0a617799 | 495 | item->date = parse_commit_date(bufptr, tail); |
27dedf0c | 496 | |
e2838d85 | 497 | if (check_graph) |
c7944050 | 498 | load_commit_graph_info(r, item); |
e2838d85 | 499 | |
228c78fb | 500 | item->object.parsed = 1; |
175785e5 DB |
501 | return 0; |
502 | } | |
503 | ||
9e5252ab SB |
504 | int repo_parse_commit_internal(struct repository *r, |
505 | struct commit *item, | |
506 | int quiet_on_missing, | |
507 | int use_commit_graph) | |
bd2c39f5 | 508 | { |
21666f1a | 509 | enum object_type type; |
bd2c39f5 NP |
510 | void *buffer; |
511 | unsigned long size; | |
7e2ad1cd JT |
512 | struct object_info oi = { |
513 | .typep = &type, | |
514 | .sizep = &size, | |
515 | .contentp = &buffer, | |
516 | }; | |
517 | /* | |
518 | * Git does not support partial clones that exclude commits, so set | |
519 | * OBJECT_INFO_SKIP_FETCH_OBJECT to fail fast when an object is missing. | |
520 | */ | |
521 | int flags = OBJECT_INFO_LOOKUP_REPLACE | OBJECT_INFO_SKIP_FETCH_OBJECT | | |
522 | OBJECT_INFO_DIE_IF_CORRUPT; | |
bd2c39f5 NP |
523 | int ret; |
524 | ||
9786f68b MK |
525 | if (!item) |
526 | return -1; | |
bd2c39f5 NP |
527 | if (item->object.parsed) |
528 | return 0; | |
9e5252ab | 529 | if (use_commit_graph && parse_commit_in_graph(r, item)) |
177722b3 | 530 | return 0; |
7e2ad1cd JT |
531 | |
532 | if (oid_object_info_extended(r, &item->object.oid, &oi, flags) < 0) | |
9cc2b07a JK |
533 | return quiet_on_missing ? -1 : |
534 | error("Could not read %s", | |
f2fd0760 | 535 | oid_to_hex(&item->object.oid)); |
21666f1a | 536 | if (type != OBJ_COMMIT) { |
bd2c39f5 NP |
537 | free(buffer); |
538 | return error("Object %s not a commit", | |
f2fd0760 | 539 | oid_to_hex(&item->object.oid)); |
bd2c39f5 | 540 | } |
9b19adac | 541 | |
9e5252ab | 542 | ret = parse_commit_buffer(r, item, buffer, size, 0); |
60ab26de | 543 | if (save_commit_buffer && !ret) { |
9e5252ab | 544 | set_commit_buffer(r, item, buffer, size); |
3ff1fbbb LT |
545 | return 0; |
546 | } | |
bd2c39f5 NP |
547 | free(buffer); |
548 | return ret; | |
549 | } | |
550 | ||
9e5252ab SB |
551 | int repo_parse_commit_gently(struct repository *r, |
552 | struct commit *item, int quiet_on_missing) | |
9b19adac | 553 | { |
9e5252ab | 554 | return repo_parse_commit_internal(r, item, quiet_on_missing, 1); |
9b19adac DS |
555 | } |
556 | ||
7059dccc JK |
557 | void parse_commit_or_die(struct commit *item) |
558 | { | |
559 | if (parse_commit(item)) | |
560 | die("unable to parse commit %s", | |
f2fd0760 | 561 | item ? oid_to_hex(&item->object.oid) : "(null)"); |
7059dccc JK |
562 | } |
563 | ||
11af2aae CC |
564 | int find_commit_subject(const char *commit_buffer, const char **subject) |
565 | { | |
566 | const char *eol; | |
567 | const char *p = commit_buffer; | |
568 | ||
569 | while (*p && (*p != '\n' || p[1] != '\n')) | |
570 | p++; | |
571 | if (*p) { | |
4e1b06da | 572 | p = skip_blank_lines(p + 2); |
9c9b03b1 | 573 | eol = strchrnul(p, '\n'); |
11af2aae CC |
574 | } else |
575 | eol = p; | |
576 | ||
577 | *subject = p; | |
578 | ||
579 | return eol - p; | |
580 | } | |
581 | ||
6e0e2887 CM |
582 | size_t commit_subject_length(const char *body) |
583 | { | |
584 | const char *p = body; | |
585 | while (*p) { | |
586 | const char *next = skip_blank_lines(p); | |
587 | if (next != p) | |
588 | break; | |
589 | p = strchrnul(p, '\n'); | |
590 | if (*p) | |
591 | p++; | |
592 | } | |
593 | return p - body; | |
594 | } | |
595 | ||
ac5155ef | 596 | struct commit_list *commit_list_insert(struct commit *item, struct commit_list **list_p) |
dd97f850 | 597 | { |
812666c8 | 598 | struct commit_list *new_list = xmalloc(sizeof(struct commit_list)); |
dd97f850 DB |
599 | new_list->item = item; |
600 | new_list->next = *list_p; | |
601 | *list_p = new_list; | |
ac5155ef | 602 | return new_list; |
dd97f850 DB |
603 | } |
604 | ||
597b2c39 DS |
605 | int commit_list_contains(struct commit *item, struct commit_list *list) |
606 | { | |
607 | while (list) { | |
608 | if (list->item == item) | |
609 | return 1; | |
610 | list = list->next; | |
611 | } | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
65319475 MV |
616 | unsigned commit_list_count(const struct commit_list *l) |
617 | { | |
618 | unsigned c = 0; | |
619 | for (; l; l = l->next ) | |
620 | c++; | |
621 | return c; | |
622 | } | |
623 | ||
53d00b39 TR |
624 | struct commit_list *copy_commit_list(struct commit_list *list) |
625 | { | |
626 | struct commit_list *head = NULL; | |
627 | struct commit_list **pp = &head; | |
628 | while (list) { | |
cb979dbd | 629 | pp = commit_list_append(list->item, pp); |
53d00b39 TR |
630 | list = list->next; |
631 | } | |
632 | return head; | |
633 | } | |
634 | ||
b0ca1205 EN |
635 | struct commit_list *reverse_commit_list(struct commit_list *list) |
636 | { | |
637 | struct commit_list *next = NULL, *current, *backup; | |
638 | for (current = list; current; current = backup) { | |
639 | backup = current->next; | |
640 | current->next = next; | |
641 | next = current; | |
642 | } | |
643 | return next; | |
644 | } | |
645 | ||
175785e5 DB |
646 | void free_commit_list(struct commit_list *list) |
647 | { | |
e510ab89 RS |
648 | while (list) |
649 | pop_commit(&list); | |
175785e5 | 650 | } |
dd97f850 | 651 | |
47e44ed1 | 652 | struct commit_list * commit_list_insert_by_date(struct commit *item, struct commit_list **list) |
dd97f850 DB |
653 | { |
654 | struct commit_list **pp = list; | |
655 | struct commit_list *p; | |
656 | while ((p = *pp) != NULL) { | |
657 | if (p->item->date < item->date) { | |
658 | break; | |
659 | } | |
660 | pp = &p->next; | |
661 | } | |
f755494c | 662 | return commit_list_insert(item, pp); |
dd97f850 DB |
663 | } |
664 | ||
c0fb5774 RS |
665 | static int commit_list_compare_by_date(const struct commit_list *a, |
666 | const struct commit_list *b) | |
46905893 | 667 | { |
c0fb5774 RS |
668 | timestamp_t a_date = a->item->date; |
669 | timestamp_t b_date = b->item->date; | |
46905893 RS |
670 | if (a_date < b_date) |
671 | return 1; | |
672 | if (a_date > b_date) | |
673 | return -1; | |
674 | return 0; | |
675 | } | |
676 | ||
c0fb5774 | 677 | DEFINE_LIST_SORT(static, commit_list_sort, struct commit_list, next); |
a6080a0a | 678 | |
47e44ed1 | 679 | void commit_list_sort_by_date(struct commit_list **list) |
dd97f850 | 680 | { |
c0fb5774 | 681 | commit_list_sort(list, commit_list_compare_by_date); |
dd97f850 DB |
682 | } |
683 | ||
58e28af6 DB |
684 | struct commit *pop_most_recent_commit(struct commit_list **list, |
685 | unsigned int mark) | |
dd97f850 | 686 | { |
e510ab89 | 687 | struct commit *ret = pop_commit(list); |
dd97f850 | 688 | struct commit_list *parents = ret->parents; |
dd97f850 DB |
689 | |
690 | while (parents) { | |
4056c091 | 691 | struct commit *commit = parents->item; |
dec38c81 | 692 | if (!parse_commit(commit) && !(commit->object.flags & mark)) { |
58e28af6 | 693 | commit->object.flags |= mark; |
47e44ed1 | 694 | commit_list_insert_by_date(commit, list); |
4056c091 | 695 | } |
dd97f850 DB |
696 | parents = parents->next; |
697 | } | |
698 | return ret; | |
699 | } | |
e3bc7a3b | 700 | |
941ba8db NTND |
701 | static void clear_commit_marks_1(struct commit_list **plist, |
702 | struct commit *commit, unsigned int mark) | |
f8f9c73c | 703 | { |
60fcc2e6 JS |
704 | while (commit) { |
705 | struct commit_list *parents; | |
f8f9c73c | 706 | |
60fcc2e6 JS |
707 | if (!(mark & commit->object.flags)) |
708 | return; | |
58ecf5c1 | 709 | |
60fcc2e6 JS |
710 | commit->object.flags &= ~mark; |
711 | ||
712 | parents = commit->parents; | |
713 | if (!parents) | |
714 | return; | |
715 | ||
4cb39fcf RS |
716 | while ((parents = parents->next)) { |
717 | if (parents->item->object.flags & mark) | |
718 | commit_list_insert(parents->item, plist); | |
719 | } | |
60fcc2e6 JS |
720 | |
721 | commit = commit->parents->item; | |
f8f9c73c JH |
722 | } |
723 | } | |
724 | ||
e895cb51 | 725 | void clear_commit_marks_many(int nr, struct commit **commit, unsigned int mark) |
941ba8db NTND |
726 | { |
727 | struct commit_list *list = NULL; | |
e895cb51 JH |
728 | |
729 | while (nr--) { | |
07f7d55a | 730 | clear_commit_marks_1(&list, *commit, mark); |
e895cb51 JH |
731 | commit++; |
732 | } | |
941ba8db NTND |
733 | while (list) |
734 | clear_commit_marks_1(&list, pop_commit(&list), mark); | |
735 | } | |
736 | ||
e895cb51 JH |
737 | void clear_commit_marks(struct commit *commit, unsigned int mark) |
738 | { | |
739 | clear_commit_marks_many(1, &commit, mark); | |
740 | } | |
741 | ||
a3437b8c JS |
742 | struct commit *pop_commit(struct commit_list **stack) |
743 | { | |
744 | struct commit_list *top = *stack; | |
745 | struct commit *item = top ? top->item : NULL; | |
746 | ||
747 | if (top) { | |
748 | *stack = top->next; | |
749 | free(top); | |
750 | } | |
751 | return item; | |
752 | } | |
753 | ||
a84b794a JH |
754 | /* |
755 | * Topological sort support | |
756 | */ | |
96c4f4a3 | 757 | |
a84b794a JH |
758 | /* count number of children that have not been emitted */ |
759 | define_commit_slab(indegree_slab, int); | |
96c4f4a3 | 760 | |
18207030 | 761 | define_commit_slab(author_date_slab, timestamp_t); |
81c6b38b | 762 | |
5284fc5c DS |
763 | void record_author_date(struct author_date_slab *author_date, |
764 | struct commit *commit) | |
81c6b38b | 765 | { |
8597ea3a | 766 | const char *buffer = get_commit_buffer(commit, NULL); |
81c6b38b | 767 | struct ident_split ident; |
ea5517f0 JK |
768 | const char *ident_line; |
769 | size_t ident_len; | |
81c6b38b | 770 | char *date_end; |
dddbad72 | 771 | timestamp_t date; |
81c6b38b | 772 | |
ea5517f0 JK |
773 | ident_line = find_commit_header(buffer, "author", &ident_len); |
774 | if (!ident_line) | |
775 | goto fail_exit; /* no author line */ | |
776 | if (split_ident_line(&ident, ident_line, ident_len) || | |
777 | !ident.date_begin || !ident.date_end) | |
778 | goto fail_exit; /* malformed "author" line */ | |
81c6b38b | 779 | |
1aeb7e75 | 780 | date = parse_timestamp(ident.date_begin, &date_end, 10); |
81c6b38b JH |
781 | if (date_end != ident.date_end) |
782 | goto fail_exit; /* malformed date */ | |
783 | *(author_date_slab_at(author_date, commit)) = date; | |
784 | ||
785 | fail_exit: | |
ba41c1c9 | 786 | unuse_commit_buffer(commit, buffer); |
81c6b38b JH |
787 | } |
788 | ||
5284fc5c DS |
789 | int compare_commits_by_author_date(const void *a_, const void *b_, |
790 | void *cb_data) | |
81c6b38b JH |
791 | { |
792 | const struct commit *a = a_, *b = b_; | |
793 | struct author_date_slab *author_date = cb_data; | |
dddbad72 JS |
794 | timestamp_t a_date = *(author_date_slab_at(author_date, a)); |
795 | timestamp_t b_date = *(author_date_slab_at(author_date, b)); | |
81c6b38b JH |
796 | |
797 | /* newer commits with larger date first */ | |
798 | if (a_date < b_date) | |
799 | return 1; | |
800 | else if (a_date > b_date) | |
801 | return -1; | |
802 | return 0; | |
803 | } | |
804 | ||
17587122 JK |
805 | int compare_commits_by_gen_then_commit_date(const void *a_, const void *b_, |
806 | void *unused UNUSED) | |
3afc679b DS |
807 | { |
808 | const struct commit *a = a_, *b = b_; | |
d7f92784 AK |
809 | const timestamp_t generation_a = commit_graph_generation(a), |
810 | generation_b = commit_graph_generation(b); | |
3afc679b DS |
811 | |
812 | /* newer commits first */ | |
c752ad09 | 813 | if (generation_a < generation_b) |
3afc679b | 814 | return 1; |
c752ad09 | 815 | else if (generation_a > generation_b) |
3afc679b DS |
816 | return -1; |
817 | ||
818 | /* use date as a heuristic when generations are equal */ | |
819 | if (a->date < b->date) | |
820 | return 1; | |
821 | else if (a->date > b->date) | |
822 | return -1; | |
823 | return 0; | |
824 | } | |
825 | ||
17587122 JK |
826 | int compare_commits_by_commit_date(const void *a_, const void *b_, |
827 | void *unused UNUSED) | |
da24b104 JH |
828 | { |
829 | const struct commit *a = a_, *b = b_; | |
830 | /* newer commits with larger date first */ | |
831 | if (a->date < b->date) | |
832 | return 1; | |
833 | else if (a->date > b->date) | |
834 | return -1; | |
835 | return 0; | |
836 | } | |
837 | ||
ab580ace JS |
838 | /* |
839 | * Performs an in-place topological sort on the list supplied. | |
840 | */ | |
da24b104 | 841 | void sort_in_topological_order(struct commit_list **list, enum rev_sort_order sort_order) |
6b6dcfc2 | 842 | { |
23c17d4a | 843 | struct commit_list *next, *orig = *list; |
23c17d4a | 844 | struct commit_list **pptr; |
a84b794a | 845 | struct indegree_slab indegree; |
da24b104 JH |
846 | struct prio_queue queue; |
847 | struct commit *commit; | |
81c6b38b | 848 | struct author_date_slab author_date; |
a6080a0a | 849 | |
23c17d4a | 850 | if (!orig) |
7d6fb370 | 851 | return; |
23c17d4a LT |
852 | *list = NULL; |
853 | ||
a84b794a | 854 | init_indegree_slab(&indegree); |
da24b104 | 855 | memset(&queue, '\0', sizeof(queue)); |
81c6b38b | 856 | |
da24b104 JH |
857 | switch (sort_order) { |
858 | default: /* REV_SORT_IN_GRAPH_ORDER */ | |
859 | queue.compare = NULL; | |
860 | break; | |
861 | case REV_SORT_BY_COMMIT_DATE: | |
862 | queue.compare = compare_commits_by_commit_date; | |
863 | break; | |
81c6b38b JH |
864 | case REV_SORT_BY_AUTHOR_DATE: |
865 | init_author_date_slab(&author_date); | |
866 | queue.compare = compare_commits_by_author_date; | |
867 | queue.cb_data = &author_date; | |
868 | break; | |
da24b104 | 869 | } |
96c4f4a3 | 870 | |
23c17d4a LT |
871 | /* Mark them and clear the indegree */ |
872 | for (next = orig; next; next = next->next) { | |
873 | struct commit *commit = next->item; | |
a84b794a | 874 | *(indegree_slab_at(&indegree, commit)) = 1; |
81c6b38b JH |
875 | /* also record the author dates, if needed */ |
876 | if (sort_order == REV_SORT_BY_AUTHOR_DATE) | |
877 | record_author_date(&author_date, commit); | |
ab580ace | 878 | } |
23c17d4a | 879 | |
ab580ace | 880 | /* update the indegree */ |
23c17d4a | 881 | for (next = orig; next; next = next->next) { |
da24b104 | 882 | struct commit_list *parents = next->item->parents; |
ab580ace | 883 | while (parents) { |
23c17d4a | 884 | struct commit *parent = parents->item; |
a84b794a | 885 | int *pi = indegree_slab_at(&indegree, parent); |
6b6dcfc2 | 886 | |
96c4f4a3 JK |
887 | if (*pi) |
888 | (*pi)++; | |
23c17d4a | 889 | parents = parents->next; |
ab580ace | 890 | } |
ab580ace | 891 | } |
23c17d4a | 892 | |
a6080a0a | 893 | /* |
674d1727 PH |
894 | * find the tips |
895 | * | |
896 | * tips are nodes not reachable from any other node in the list | |
897 | * | |
898 | * the tips serve as a starting set for the work queue. | |
899 | */ | |
23c17d4a LT |
900 | for (next = orig; next; next = next->next) { |
901 | struct commit *commit = next->item; | |
ab580ace | 902 | |
a84b794a | 903 | if (*(indegree_slab_at(&indegree, commit)) == 1) |
da24b104 | 904 | prio_queue_put(&queue, commit); |
ab580ace | 905 | } |
4c8725f1 | 906 | |
da24b104 JH |
907 | /* |
908 | * This is unfortunate; the initial tips need to be shown | |
909 | * in the order given from the revision traversal machinery. | |
910 | */ | |
911 | if (sort_order == REV_SORT_IN_GRAPH_ORDER) | |
912 | prio_queue_reverse(&queue); | |
913 | ||
914 | /* We no longer need the commit list */ | |
915 | free_commit_list(orig); | |
23c17d4a LT |
916 | |
917 | pptr = list; | |
918 | *list = NULL; | |
da24b104 JH |
919 | while ((commit = prio_queue_get(&queue)) != NULL) { |
920 | struct commit_list *parents; | |
23c17d4a | 921 | |
23c17d4a | 922 | for (parents = commit->parents; parents ; parents = parents->next) { |
cd2b8ae9 | 923 | struct commit *parent = parents->item; |
a84b794a | 924 | int *pi = indegree_slab_at(&indegree, parent); |
23c17d4a | 925 | |
96c4f4a3 | 926 | if (!*pi) |
23c17d4a LT |
927 | continue; |
928 | ||
929 | /* | |
930 | * parents are only enqueued for emission | |
931 | * when all their children have been emitted thereby | |
932 | * guaranteeing topological order. | |
933 | */ | |
da24b104 JH |
934 | if (--(*pi) == 1) |
935 | prio_queue_put(&queue, parent); | |
ab580ace JS |
936 | } |
937 | /* | |
da24b104 JH |
938 | * all children of commit have already been |
939 | * emitted. we can emit it now. | |
674d1727 | 940 | */ |
a84b794a | 941 | *(indegree_slab_at(&indegree, commit)) = 0; |
da24b104 JH |
942 | |
943 | pptr = &commit_list_insert(commit, pptr)->next; | |
ab580ace | 944 | } |
96c4f4a3 | 945 | |
a84b794a | 946 | clear_indegree_slab(&indegree); |
da24b104 | 947 | clear_prio_queue(&queue); |
81c6b38b JH |
948 | if (sort_order == REV_SORT_BY_AUTHOR_DATE) |
949 | clear_author_date_slab(&author_date); | |
ab580ace | 950 | } |
7c6f8aaf | 951 | |
103148aa PK |
952 | struct rev_collect { |
953 | struct commit **commit; | |
954 | int nr; | |
955 | int alloc; | |
956 | unsigned int initial : 1; | |
957 | }; | |
958 | ||
959 | static void add_one_commit(struct object_id *oid, struct rev_collect *revs) | |
960 | { | |
961 | struct commit *commit; | |
962 | ||
963 | if (is_null_oid(oid)) | |
964 | return; | |
965 | ||
966 | commit = lookup_commit(the_repository, oid); | |
967 | if (!commit || | |
968 | (commit->object.flags & TMP_MARK) || | |
969 | parse_commit(commit)) | |
970 | return; | |
971 | ||
972 | ALLOC_GROW(revs->commit, revs->nr + 1, revs->alloc); | |
973 | revs->commit[revs->nr++] = commit; | |
974 | commit->object.flags |= TMP_MARK; | |
975 | } | |
976 | ||
977 | static int collect_one_reflog_ent(struct object_id *ooid, struct object_id *noid, | |
5cf88fd8 ÆAB |
978 | const char *ident UNUSED, |
979 | timestamp_t timestamp UNUSED, int tz UNUSED, | |
980 | const char *message UNUSED, void *cbdata) | |
103148aa PK |
981 | { |
982 | struct rev_collect *revs = cbdata; | |
983 | ||
984 | if (revs->initial) { | |
985 | revs->initial = 0; | |
986 | add_one_commit(ooid, revs); | |
987 | } | |
988 | add_one_commit(noid, revs); | |
989 | return 0; | |
990 | } | |
991 | ||
992 | struct commit *get_fork_point(const char *refname, struct commit *commit) | |
993 | { | |
994 | struct object_id oid; | |
995 | struct rev_collect revs; | |
996 | struct commit_list *bases; | |
997 | int i; | |
998 | struct commit *ret = NULL; | |
f08132f8 JH |
999 | char *full_refname; |
1000 | ||
f24c30e0 | 1001 | switch (dwim_ref(refname, strlen(refname), &oid, &full_refname, 0)) { |
f08132f8 JH |
1002 | case 0: |
1003 | die("No such ref: '%s'", refname); | |
1004 | case 1: | |
1005 | break; /* good */ | |
1006 | default: | |
1007 | die("Ambiguous refname: '%s'", refname); | |
1008 | } | |
103148aa PK |
1009 | |
1010 | memset(&revs, 0, sizeof(revs)); | |
1011 | revs.initial = 1; | |
f08132f8 | 1012 | for_each_reflog_ent(full_refname, collect_one_reflog_ent, &revs); |
103148aa | 1013 | |
f08132f8 | 1014 | if (!revs.nr) |
103148aa PK |
1015 | add_one_commit(&oid, &revs); |
1016 | ||
1017 | for (i = 0; i < revs.nr; i++) | |
1018 | revs.commit[i]->object.flags &= ~TMP_MARK; | |
1019 | ||
1020 | bases = get_merge_bases_many(commit, revs.nr, revs.commit); | |
1021 | ||
1022 | /* | |
1023 | * There should be one and only one merge base, when we found | |
1024 | * a common ancestor among reflog entries. | |
1025 | */ | |
1026 | if (!bases || bases->next) | |
1027 | goto cleanup_return; | |
1028 | ||
1029 | /* And the found one must be one of the reflog entries */ | |
1030 | for (i = 0; i < revs.nr; i++) | |
1031 | if (&bases->item->object == &revs.commit[i]->object) | |
1032 | break; /* found */ | |
1033 | if (revs.nr <= i) | |
1034 | goto cleanup_return; | |
1035 | ||
1036 | ret = bases->item; | |
1037 | ||
1038 | cleanup_return: | |
0c10ed19 | 1039 | free(revs.commit); |
103148aa | 1040 | free_commit_list(bases); |
f08132f8 | 1041 | free(full_refname); |
103148aa PK |
1042 | return ret; |
1043 | } | |
1044 | ||
42d4e1d1 | 1045 | /* |
1046 | * Indexed by hash algorithm identifier. | |
1047 | */ | |
1048 | static const char *gpg_sig_headers[] = { | |
1049 | NULL, | |
1050 | "gpgsig", | |
1051 | "gpgsig-sha256", | |
1052 | }; | |
ba3c69a9 | 1053 | |
937032e1 | 1054 | int sign_with_header(struct strbuf *buf, const char *keyid) |
ba3c69a9 JH |
1055 | { |
1056 | struct strbuf sig = STRBUF_INIT; | |
1057 | int inspos, copypos; | |
3324dd8f | 1058 | const char *eoh; |
42d4e1d1 | 1059 | const char *gpg_sig_header = gpg_sig_headers[hash_algo_by_ptr(the_hash_algo)]; |
1060 | int gpg_sig_header_len = strlen(gpg_sig_header); | |
ba3c69a9 JH |
1061 | |
1062 | /* find the end of the header */ | |
3324dd8f JS |
1063 | eoh = strstr(buf->buf, "\n\n"); |
1064 | if (!eoh) | |
1065 | inspos = buf->len; | |
1066 | else | |
1067 | inspos = eoh - buf->buf + 1; | |
ba3c69a9 JH |
1068 | |
1069 | if (!keyid || !*keyid) | |
1070 | keyid = get_signing_key(); | |
1071 | if (sign_buffer(buf, &sig, keyid)) { | |
1072 | strbuf_release(&sig); | |
1073 | return -1; | |
1074 | } | |
1075 | ||
1076 | for (copypos = 0; sig.buf[copypos]; ) { | |
1077 | const char *bol = sig.buf + copypos; | |
1078 | const char *eol = strchrnul(bol, '\n'); | |
1079 | int len = (eol - bol) + !!*eol; | |
1080 | ||
1081 | if (!copypos) { | |
1082 | strbuf_insert(buf, inspos, gpg_sig_header, gpg_sig_header_len); | |
1083 | inspos += gpg_sig_header_len; | |
1084 | } | |
a91cc7fa | 1085 | strbuf_insertstr(buf, inspos++, " "); |
ba3c69a9 JH |
1086 | strbuf_insert(buf, inspos, bol, len); |
1087 | inspos += len; | |
1088 | copypos += len; | |
1089 | } | |
1090 | strbuf_release(&sig); | |
1091 | return 0; | |
1092 | } | |
1093 | ||
937032e1 | 1094 | |
1095 | ||
218aa3a6 | 1096 | int parse_signed_commit(const struct commit *commit, |
1fb5cf0d | 1097 | struct strbuf *payload, struct strbuf *signature, |
1098 | const struct git_hash_algo *algop) | |
0c37f1fc JH |
1099 | { |
1100 | unsigned long size; | |
218aa3a6 | 1101 | const char *buffer = get_commit_buffer(commit, &size); |
937032e1 | 1102 | int ret = parse_buffer_signed_by_header(buffer, size, payload, signature, algop); |
1103 | ||
1104 | unuse_commit_buffer(commit, buffer); | |
1105 | return ret; | |
1106 | } | |
1107 | ||
1108 | int parse_buffer_signed_by_header(const char *buffer, | |
1109 | unsigned long size, | |
1110 | struct strbuf *payload, | |
1111 | struct strbuf *signature, | |
1112 | const struct git_hash_algo *algop) | |
1113 | { | |
1fb5cf0d | 1114 | int in_signature = 0, saw_signature = 0, other_signature = 0; |
1115 | const char *line, *tail, *p; | |
1116 | const char *gpg_sig_header = gpg_sig_headers[hash_algo_by_ptr(algop)]; | |
0c37f1fc JH |
1117 | |
1118 | line = buffer; | |
1119 | tail = buffer + size; | |
0c37f1fc JH |
1120 | while (line < tail) { |
1121 | const char *sig = NULL; | |
218aa3a6 | 1122 | const char *next = memchr(line, '\n', tail - line); |
0c37f1fc JH |
1123 | |
1124 | next = next ? next + 1 : tail; | |
1125 | if (in_signature && line[0] == ' ') | |
1126 | sig = line + 1; | |
1fb5cf0d | 1127 | else if (skip_prefix(line, gpg_sig_header, &p) && |
1128 | *p == ' ') { | |
1129 | sig = line + strlen(gpg_sig_header) + 1; | |
1130 | other_signature = 0; | |
1131 | } | |
1132 | else if (starts_with(line, "gpgsig")) | |
1133 | other_signature = 1; | |
1134 | else if (other_signature && line[0] != ' ') | |
1135 | other_signature = 0; | |
0c37f1fc JH |
1136 | if (sig) { |
1137 | strbuf_add(signature, sig, next - sig); | |
1138 | saw_signature = 1; | |
1139 | in_signature = 1; | |
1140 | } else { | |
1141 | if (*line == '\n') | |
1142 | /* dump the whole remainder of the buffer */ | |
1143 | next = tail; | |
1fb5cf0d | 1144 | if (!other_signature) |
1145 | strbuf_add(payload, line, next - line); | |
0c37f1fc JH |
1146 | in_signature = 0; |
1147 | } | |
1148 | line = next; | |
1149 | } | |
0c37f1fc JH |
1150 | return saw_signature; |
1151 | } | |
1152 | ||
0b05ab6f CC |
1153 | int remove_signature(struct strbuf *buf) |
1154 | { | |
1155 | const char *line = buf->buf; | |
1156 | const char *tail = buf->buf + buf->len; | |
1157 | int in_signature = 0; | |
1fb5cf0d | 1158 | struct sigbuf { |
1159 | const char *start; | |
1160 | const char *end; | |
1161 | } sigs[2], *sigp = &sigs[0]; | |
1162 | int i; | |
1163 | const char *orig_buf = buf->buf; | |
1164 | ||
1165 | memset(sigs, 0, sizeof(sigs)); | |
0b05ab6f CC |
1166 | |
1167 | while (line < tail) { | |
1168 | const char *next = memchr(line, '\n', tail - line); | |
1169 | next = next ? next + 1 : tail; | |
1170 | ||
1171 | if (in_signature && line[0] == ' ') | |
1fb5cf0d | 1172 | sigp->end = next; |
42d4e1d1 | 1173 | else if (starts_with(line, "gpgsig")) { |
1174 | int i; | |
1175 | for (i = 1; i < GIT_HASH_NALGOS; i++) { | |
1176 | const char *p; | |
1177 | if (skip_prefix(line, gpg_sig_headers[i], &p) && | |
1178 | *p == ' ') { | |
1fb5cf0d | 1179 | sigp->start = line; |
1180 | sigp->end = next; | |
42d4e1d1 | 1181 | in_signature = 1; |
1182 | } | |
1183 | } | |
0b05ab6f CC |
1184 | } else { |
1185 | if (*line == '\n') | |
1186 | /* dump the whole remainder of the buffer */ | |
1187 | next = tail; | |
1fb5cf0d | 1188 | if (in_signature && sigp - sigs != ARRAY_SIZE(sigs)) |
1189 | sigp++; | |
0b05ab6f CC |
1190 | in_signature = 0; |
1191 | } | |
1192 | line = next; | |
1193 | } | |
1194 | ||
1fb5cf0d | 1195 | for (i = ARRAY_SIZE(sigs) - 1; i >= 0; i--) |
1196 | if (sigs[i].start) | |
1197 | strbuf_remove(buf, sigs[i].start - orig_buf, sigs[i].end - sigs[i].start); | |
0b05ab6f | 1198 | |
1fb5cf0d | 1199 | return sigs[0].start != NULL; |
0b05ab6f CC |
1200 | } |
1201 | ||
5231c633 JH |
1202 | static void handle_signed_tag(struct commit *parent, struct commit_extra_header ***tail) |
1203 | { | |
1204 | struct merge_remote_desc *desc; | |
1205 | struct commit_extra_header *mergetag; | |
1206 | char *buf; | |
482c1191 | 1207 | unsigned long size; |
5231c633 | 1208 | enum object_type type; |
482c1191 | 1209 | struct strbuf payload = STRBUF_INIT; |
1210 | struct strbuf signature = STRBUF_INIT; | |
5231c633 JH |
1211 | |
1212 | desc = merge_remote_util(parent); | |
1213 | if (!desc || !desc->obj) | |
1214 | return; | |
b4f5aca4 | 1215 | buf = read_object_file(&desc->obj->oid, &type, &size); |
5231c633 JH |
1216 | if (!buf || type != OBJ_TAG) |
1217 | goto free_return; | |
482c1191 | 1218 | if (!parse_signature(buf, size, &payload, &signature)) |
5231c633 JH |
1219 | goto free_return; |
1220 | /* | |
1221 | * We could verify this signature and either omit the tag when | |
1222 | * it does not validate, but the integrator may not have the | |
0e20b229 | 1223 | * public key of the signer of the tag being merged, while a |
5231c633 JH |
1224 | * later auditor may have it while auditing, so let's not run |
1225 | * verify-signed-buffer here for now... | |
1226 | * | |
1227 | * if (verify_signed_buffer(buf, len, buf + len, size - len, ...)) | |
1228 | * warn("warning: signed tag unverified."); | |
1229 | */ | |
ca56dadb | 1230 | CALLOC_ARRAY(mergetag, 1); |
5231c633 JH |
1231 | mergetag->key = xstrdup("mergetag"); |
1232 | mergetag->value = buf; | |
1233 | mergetag->len = size; | |
1234 | ||
1235 | **tail = mergetag; | |
1236 | *tail = &mergetag->next; | |
482c1191 | 1237 | strbuf_release(&payload); |
1238 | strbuf_release(&signature); | |
5231c633 JH |
1239 | return; |
1240 | ||
1241 | free_return: | |
1242 | free(buf); | |
1243 | } | |
1244 | ||
434060ec | 1245 | int check_commit_signature(const struct commit *commit, struct signature_check *sigc) |
ffb6d7d5 SG |
1246 | { |
1247 | struct strbuf payload = STRBUF_INIT; | |
1248 | struct strbuf signature = STRBUF_INIT; | |
434060ec | 1249 | int ret = 1; |
ffb6d7d5 SG |
1250 | |
1251 | sigc->result = 'N'; | |
1252 | ||
1fb5cf0d | 1253 | if (parse_signed_commit(commit, &payload, &signature, the_hash_algo) <= 0) |
ffb6d7d5 | 1254 | goto out; |
02769437 | 1255 | |
6393c956 | 1256 | sigc->payload_type = SIGNATURE_PAYLOAD_COMMIT; |
02769437 FS |
1257 | sigc->payload = strbuf_detach(&payload, &sigc->payload_len); |
1258 | ret = check_signature(sigc, signature.buf, signature.len); | |
ffb6d7d5 SG |
1259 | |
1260 | out: | |
ffb6d7d5 SG |
1261 | strbuf_release(&payload); |
1262 | strbuf_release(&signature); | |
434060ec | 1263 | |
1264 | return ret; | |
ffb6d7d5 SG |
1265 | } |
1266 | ||
54887b46 HJI |
1267 | void verify_merge_signature(struct commit *commit, int verbosity, |
1268 | int check_trust) | |
edc4d47d JK |
1269 | { |
1270 | char hex[GIT_MAX_HEXSZ + 1]; | |
1271 | struct signature_check signature_check; | |
54887b46 | 1272 | int ret; |
edc4d47d JK |
1273 | memset(&signature_check, 0, sizeof(signature_check)); |
1274 | ||
54887b46 | 1275 | ret = check_commit_signature(commit, &signature_check); |
edc4d47d JK |
1276 | |
1277 | find_unique_abbrev_r(hex, &commit->object.oid, DEFAULT_ABBREV); | |
1278 | switch (signature_check.result) { | |
1279 | case 'G': | |
54887b46 HJI |
1280 | if (ret || (check_trust && signature_check.trust_level < TRUST_MARGINAL)) |
1281 | die(_("Commit %s has an untrusted GPG signature, " | |
1282 | "allegedly by %s."), hex, signature_check.signer); | |
edc4d47d | 1283 | break; |
edc4d47d JK |
1284 | case 'B': |
1285 | die(_("Commit %s has a bad GPG signature " | |
1286 | "allegedly by %s."), hex, signature_check.signer); | |
1287 | default: /* 'N' */ | |
1288 | die(_("Commit %s does not have a GPG signature."), hex); | |
1289 | } | |
1290 | if (verbosity >= 0 && signature_check.result == 'G') | |
1291 | printf(_("Commit %s has a good GPG signature by %s\n"), | |
1292 | hex, signature_check.signer); | |
ffb6d7d5 | 1293 | |
edc4d47d JK |
1294 | signature_check_clear(&signature_check); |
1295 | } | |
ffb6d7d5 | 1296 | |
5231c633 JH |
1297 | void append_merge_tag_headers(struct commit_list *parents, |
1298 | struct commit_extra_header ***tail) | |
1299 | { | |
1300 | while (parents) { | |
1301 | struct commit *parent = parents->item; | |
1302 | handle_signed_tag(parent, tail); | |
1303 | parents = parents->next; | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | static void add_extra_header(struct strbuf *buffer, | |
1308 | struct commit_extra_header *extra) | |
1309 | { | |
1310 | strbuf_addstr(buffer, extra->key); | |
ed7a42a0 JH |
1311 | if (extra->len) |
1312 | strbuf_add_lines(buffer, " ", extra->value, extra->len); | |
1313 | else | |
1314 | strbuf_addch(buffer, '\n'); | |
1315 | } | |
1316 | ||
c871a1d1 JH |
1317 | struct commit_extra_header *read_commit_extra_headers(struct commit *commit, |
1318 | const char **exclude) | |
ed7a42a0 JH |
1319 | { |
1320 | struct commit_extra_header *extra = NULL; | |
1321 | unsigned long size; | |
218aa3a6 JK |
1322 | const char *buffer = get_commit_buffer(commit, &size); |
1323 | extra = read_commit_extra_header_lines(buffer, size, exclude); | |
1324 | unuse_commit_buffer(commit, buffer); | |
ed7a42a0 JH |
1325 | return extra; |
1326 | } | |
1327 | ||
fef461ea | 1328 | int for_each_mergetag(each_mergetag_fn fn, struct commit *commit, void *data) |
063da62b CC |
1329 | { |
1330 | struct commit_extra_header *extra, *to_free; | |
fef461ea | 1331 | int res = 0; |
063da62b CC |
1332 | |
1333 | to_free = read_commit_extra_headers(commit, NULL); | |
fef461ea | 1334 | for (extra = to_free; !res && extra; extra = extra->next) { |
063da62b CC |
1335 | if (strcmp(extra->key, "mergetag")) |
1336 | continue; /* not a merge tag */ | |
fef461ea | 1337 | res = fn(commit, extra, data); |
063da62b CC |
1338 | } |
1339 | free_commit_extra_headers(to_free); | |
fef461ea | 1340 | return res; |
063da62b CC |
1341 | } |
1342 | ||
ed7a42a0 JH |
1343 | static inline int standard_header_field(const char *field, size_t len) |
1344 | { | |
b072504c RS |
1345 | return ((len == 4 && !memcmp(field, "tree", 4)) || |
1346 | (len == 6 && !memcmp(field, "parent", 6)) || | |
1347 | (len == 6 && !memcmp(field, "author", 6)) || | |
1348 | (len == 9 && !memcmp(field, "committer", 9)) || | |
1349 | (len == 8 && !memcmp(field, "encoding", 8))); | |
ed7a42a0 JH |
1350 | } |
1351 | ||
c871a1d1 JH |
1352 | static int excluded_header_field(const char *field, size_t len, const char **exclude) |
1353 | { | |
1354 | if (!exclude) | |
1355 | return 0; | |
1356 | ||
1357 | while (*exclude) { | |
1358 | size_t xlen = strlen(*exclude); | |
b072504c | 1359 | if (len == xlen && !memcmp(field, *exclude, xlen)) |
c871a1d1 JH |
1360 | return 1; |
1361 | exclude++; | |
1362 | } | |
1363 | return 0; | |
1364 | } | |
1365 | ||
82a75299 JH |
1366 | static struct commit_extra_header *read_commit_extra_header_lines( |
1367 | const char *buffer, size_t size, | |
1368 | const char **exclude) | |
ed7a42a0 JH |
1369 | { |
1370 | struct commit_extra_header *extra = NULL, **tail = &extra, *it = NULL; | |
1371 | const char *line, *next, *eof, *eob; | |
1372 | struct strbuf buf = STRBUF_INIT; | |
1373 | ||
1374 | for (line = buffer, eob = line + size; | |
1375 | line < eob && *line != '\n'; | |
1376 | line = next) { | |
1377 | next = memchr(line, '\n', eob - line); | |
1378 | next = next ? next + 1 : eob; | |
1379 | if (*line == ' ') { | |
1380 | /* continuation */ | |
1381 | if (it) | |
1382 | strbuf_add(&buf, line + 1, next - (line + 1)); | |
1383 | continue; | |
1384 | } | |
1385 | if (it) | |
1386 | it->value = strbuf_detach(&buf, &it->len); | |
1387 | strbuf_reset(&buf); | |
1388 | it = NULL; | |
1389 | ||
50a01cc4 RS |
1390 | eof = memchr(line, ' ', next - line); |
1391 | if (!eof) | |
ed7a42a0 | 1392 | eof = next; |
b072504c RS |
1393 | else if (standard_header_field(line, eof - line) || |
1394 | excluded_header_field(line, eof - line, exclude)) | |
ed7a42a0 JH |
1395 | continue; |
1396 | ||
ca56dadb | 1397 | CALLOC_ARRAY(it, 1); |
ed7a42a0 JH |
1398 | it->key = xmemdupz(line, eof-line); |
1399 | *tail = it; | |
1400 | tail = &it->next; | |
1401 | if (eof + 1 < next) | |
1402 | strbuf_add(&buf, eof + 1, next - (eof + 1)); | |
1403 | } | |
1404 | if (it) | |
1405 | it->value = strbuf_detach(&buf, &it->len); | |
1406 | return extra; | |
5231c633 JH |
1407 | } |
1408 | ||
1409 | void free_commit_extra_headers(struct commit_extra_header *extra) | |
1410 | { | |
1411 | while (extra) { | |
1412 | struct commit_extra_header *next = extra->next; | |
1413 | free(extra->key); | |
1414 | free(extra->value); | |
1415 | free(extra); | |
1416 | extra = next; | |
1417 | } | |
1418 | } | |
1419 | ||
5078f344 PO |
1420 | int commit_tree(const char *msg, size_t msg_len, const struct object_id *tree, |
1421 | struct commit_list *parents, struct object_id *ret, | |
ba3c69a9 | 1422 | const char *author, const char *sign_commit) |
5231c633 JH |
1423 | { |
1424 | struct commit_extra_header *extra = NULL, **tail = &extra; | |
1425 | int result; | |
1426 | ||
1427 | append_merge_tag_headers(parents, &tail); | |
e8cbe211 PW |
1428 | result = commit_tree_extended(msg, msg_len, tree, parents, ret, author, |
1429 | NULL, sign_commit, extra); | |
5231c633 JH |
1430 | free_commit_extra_headers(extra); |
1431 | return result; | |
1432 | } | |
1433 | ||
08a94a14 LT |
1434 | static int find_invalid_utf8(const char *buf, int len) |
1435 | { | |
1436 | int offset = 0; | |
e82bd6cc | 1437 | static const unsigned int max_codepoint[] = { |
1438 | 0x7f, 0x7ff, 0xffff, 0x10ffff | |
1439 | }; | |
08a94a14 LT |
1440 | |
1441 | while (len) { | |
1442 | unsigned char c = *buf++; | |
1443 | int bytes, bad_offset; | |
28110d4b | 1444 | unsigned int codepoint; |
e82bd6cc | 1445 | unsigned int min_val, max_val; |
08a94a14 LT |
1446 | |
1447 | len--; | |
1448 | offset++; | |
1449 | ||
1450 | /* Simple US-ASCII? No worries. */ | |
1451 | if (c < 0x80) | |
1452 | continue; | |
1453 | ||
1454 | bad_offset = offset-1; | |
1455 | ||
1456 | /* | |
1457 | * Count how many more high bits set: that's how | |
1458 | * many more bytes this sequence should have. | |
1459 | */ | |
1460 | bytes = 0; | |
1461 | while (c & 0x40) { | |
1462 | c <<= 1; | |
1463 | bytes++; | |
1464 | } | |
1465 | ||
28110d4b | 1466 | /* |
1467 | * Must be between 1 and 3 more bytes. Longer sequences result in | |
1468 | * codepoints beyond U+10FFFF, which are guaranteed never to exist. | |
1469 | */ | |
1470 | if (bytes < 1 || 3 < bytes) | |
08a94a14 LT |
1471 | return bad_offset; |
1472 | ||
1473 | /* Do we *have* that many bytes? */ | |
1474 | if (len < bytes) | |
1475 | return bad_offset; | |
1476 | ||
e82bd6cc | 1477 | /* |
1478 | * Place the encoded bits at the bottom of the value and compute the | |
1479 | * valid range. | |
1480 | */ | |
28110d4b | 1481 | codepoint = (c & 0x7f) >> bytes; |
e82bd6cc | 1482 | min_val = max_codepoint[bytes-1] + 1; |
1483 | max_val = max_codepoint[bytes]; | |
28110d4b | 1484 | |
08a94a14 LT |
1485 | offset += bytes; |
1486 | len -= bytes; | |
1487 | ||
1488 | /* And verify that they are good continuation bytes */ | |
1489 | do { | |
28110d4b | 1490 | codepoint <<= 6; |
1491 | codepoint |= *buf & 0x3f; | |
08a94a14 LT |
1492 | if ((*buf++ & 0xc0) != 0x80) |
1493 | return bad_offset; | |
1494 | } while (--bytes); | |
1495 | ||
e82bd6cc | 1496 | /* Reject codepoints that are out of range for the sequence length. */ |
1497 | if (codepoint < min_val || codepoint > max_val) | |
28110d4b | 1498 | return bad_offset; |
1499 | /* Surrogates are only for UTF-16 and cannot be encoded in UTF-8. */ | |
1500 | if ((codepoint & 0x1ff800) == 0xd800) | |
1501 | return bad_offset; | |
81050ac6 | 1502 | /* U+xxFFFE and U+xxFFFF are guaranteed non-characters. */ |
dc773a67 | 1503 | if ((codepoint & 0xfffe) == 0xfffe) |
81050ac6 PK |
1504 | return bad_offset; |
1505 | /* So are anything in the range U+FDD0..U+FDEF. */ | |
1506 | if (codepoint >= 0xfdd0 && codepoint <= 0xfdef) | |
28110d4b | 1507 | return bad_offset; |
08a94a14 LT |
1508 | } |
1509 | return -1; | |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * This verifies that the buffer is in proper utf8 format. | |
1514 | * | |
1515 | * If it isn't, it assumes any non-utf8 characters are Latin1, | |
1516 | * and does the conversion. | |
08a94a14 LT |
1517 | */ |
1518 | static int verify_utf8(struct strbuf *buf) | |
1519 | { | |
1520 | int ok = 1; | |
1521 | long pos = 0; | |
1522 | ||
1523 | for (;;) { | |
1524 | int bad; | |
1525 | unsigned char c; | |
1526 | unsigned char replace[2]; | |
1527 | ||
1528 | bad = find_invalid_utf8(buf->buf + pos, buf->len - pos); | |
1529 | if (bad < 0) | |
1530 | return ok; | |
1531 | pos += bad; | |
1532 | ok = 0; | |
1533 | c = buf->buf[pos]; | |
1534 | strbuf_remove(buf, pos, 1); | |
1535 | ||
1536 | /* We know 'c' must be in the range 128-255 */ | |
1537 | replace[0] = 0xc0 + (c >> 6); | |
1538 | replace[1] = 0x80 + (c & 0x3f); | |
1539 | strbuf_insert(buf, pos, replace, 2); | |
1540 | pos += 2; | |
1541 | } | |
1542 | } | |
1543 | ||
40d52ff7 | 1544 | static const char commit_utf8_warn[] = |
4fa4b315 VA |
1545 | N_("Warning: commit message did not conform to UTF-8.\n" |
1546 | "You may want to amend it after fixing the message, or set the config\n" | |
b4eda05d | 1547 | "variable i18n.commitEncoding to the encoding your project uses.\n"); |
40d52ff7 | 1548 | |
3ffefb54 | 1549 | int commit_tree_extended(const char *msg, size_t msg_len, |
5078f344 PO |
1550 | const struct object_id *tree, |
1551 | struct commit_list *parents, struct object_id *ret, | |
e8cbe211 PW |
1552 | const char *author, const char *committer, |
1553 | const char *sign_commit, | |
ba3c69a9 | 1554 | struct commit_extra_header *extra) |
40d52ff7 JK |
1555 | { |
1556 | int result; | |
1557 | int encoding_is_utf8; | |
1558 | struct strbuf buffer; | |
1559 | ||
e816caa0 | 1560 | assert_oid_type(tree, OBJ_TREE); |
40d52ff7 | 1561 | |
3ffefb54 | 1562 | if (memchr(msg, '\0', msg_len)) |
37576c14 NTND |
1563 | return error("a NUL byte in commit log message not allowed."); |
1564 | ||
40d52ff7 JK |
1565 | /* Not having i18n.commitencoding is the same as having utf-8 */ |
1566 | encoding_is_utf8 = is_encoding_utf8(git_commit_encoding); | |
1567 | ||
1568 | strbuf_init(&buffer, 8192); /* should avoid reallocs for the headers */ | |
5078f344 | 1569 | strbuf_addf(&buffer, "tree %s\n", oid_to_hex(tree)); |
40d52ff7 JK |
1570 | |
1571 | /* | |
1572 | * NOTE! This ordering means that the same exact tree merged with a | |
1573 | * different order of parents will be a _different_ changeset even | |
1574 | * if everything else stays the same. | |
1575 | */ | |
1576 | while (parents) { | |
e510ab89 | 1577 | struct commit *parent = pop_commit(&parents); |
40d52ff7 | 1578 | strbuf_addf(&buffer, "parent %s\n", |
f2fd0760 | 1579 | oid_to_hex(&parent->object.oid)); |
40d52ff7 JK |
1580 | } |
1581 | ||
1582 | /* Person/date information */ | |
1583 | if (!author) | |
f9bc573f | 1584 | author = git_author_info(IDENT_STRICT); |
40d52ff7 | 1585 | strbuf_addf(&buffer, "author %s\n", author); |
e8cbe211 PW |
1586 | if (!committer) |
1587 | committer = git_committer_info(IDENT_STRICT); | |
1588 | strbuf_addf(&buffer, "committer %s\n", committer); | |
40d52ff7 JK |
1589 | if (!encoding_is_utf8) |
1590 | strbuf_addf(&buffer, "encoding %s\n", git_commit_encoding); | |
5231c633 JH |
1591 | |
1592 | while (extra) { | |
1593 | add_extra_header(&buffer, extra); | |
1594 | extra = extra->next; | |
1595 | } | |
40d52ff7 JK |
1596 | strbuf_addch(&buffer, '\n'); |
1597 | ||
1598 | /* And add the comment */ | |
3ffefb54 | 1599 | strbuf_add(&buffer, msg, msg_len); |
40d52ff7 JK |
1600 | |
1601 | /* And check the encoding */ | |
08a94a14 | 1602 | if (encoding_is_utf8 && !verify_utf8(&buffer)) |
4fa4b315 | 1603 | fprintf(stderr, _(commit_utf8_warn)); |
40d52ff7 | 1604 | |
937032e1 | 1605 | if (sign_commit && sign_with_header(&buffer, sign_commit)) { |
e505146d RS |
1606 | result = -1; |
1607 | goto out; | |
1608 | } | |
ba3c69a9 | 1609 | |
c80d226a | 1610 | result = write_object_file(buffer.buf, buffer.len, OBJ_COMMIT, ret); |
e505146d | 1611 | out: |
40d52ff7 JK |
1612 | strbuf_release(&buffer); |
1613 | return result; | |
1614 | } | |
ae8e4c9c | 1615 | |
e2e5ac23 NTND |
1616 | define_commit_slab(merge_desc_slab, struct merge_remote_desc *); |
1617 | static struct merge_desc_slab merge_desc_slab = COMMIT_SLAB_INIT(1, merge_desc_slab); | |
1618 | ||
1619 | struct merge_remote_desc *merge_remote_util(struct commit *commit) | |
1620 | { | |
1621 | return *merge_desc_slab_at(&merge_desc_slab, commit); | |
1622 | } | |
1623 | ||
beb518c9 RS |
1624 | void set_merge_remote_desc(struct commit *commit, |
1625 | const char *name, struct object *obj) | |
1626 | { | |
1627 | struct merge_remote_desc *desc; | |
5447a76a | 1628 | FLEX_ALLOC_STR(desc, name, name); |
beb518c9 | 1629 | desc->obj = obj; |
e2e5ac23 | 1630 | *merge_desc_slab_at(&merge_desc_slab, commit) = desc; |
beb518c9 RS |
1631 | } |
1632 | ||
ae8e4c9c JH |
1633 | struct commit *get_merge_parent(const char *name) |
1634 | { | |
1635 | struct object *obj; | |
1636 | struct commit *commit; | |
7683e2e6 | 1637 | struct object_id oid; |
e82caf38 | 1638 | if (get_oid(name, &oid)) |
ae8e4c9c | 1639 | return NULL; |
109cd76d | 1640 | obj = parse_object(the_repository, &oid); |
ae8e4c9c | 1641 | commit = (struct commit *)peel_to_type(name, 0, obj, OBJ_COMMIT); |
e2e5ac23 | 1642 | if (commit && !merge_remote_util(commit)) |
beb518c9 | 1643 | set_merge_remote_desc(commit, name, obj); |
ae8e4c9c JH |
1644 | return commit; |
1645 | } | |
89b5f1d9 RS |
1646 | |
1647 | /* | |
1648 | * Append a commit to the end of the commit_list. | |
1649 | * | |
1650 | * next starts by pointing to the variable that holds the head of an | |
1651 | * empty commit_list, and is updated to point to the "next" field of | |
1652 | * the last item on the list as new commits are appended. | |
1653 | * | |
1654 | * Usage example: | |
1655 | * | |
1656 | * struct commit_list *list; | |
1657 | * struct commit_list **next = &list; | |
1658 | * | |
1659 | * next = commit_list_append(c1, next); | |
1660 | * next = commit_list_append(c2, next); | |
1661 | * assert(commit_list_count(list) == 2); | |
1662 | * return list; | |
1663 | */ | |
1664 | struct commit_list **commit_list_append(struct commit *commit, | |
1665 | struct commit_list **next) | |
1666 | { | |
258c03eb BW |
1667 | struct commit_list *new_commit = xmalloc(sizeof(struct commit_list)); |
1668 | new_commit->item = commit; | |
1669 | *next = new_commit; | |
1670 | new_commit->next = NULL; | |
1671 | return &new_commit->next; | |
89b5f1d9 | 1672 | } |
efc7df45 | 1673 | |
cfc5cf42 JC |
1674 | const char *find_header_mem(const char *msg, size_t len, |
1675 | const char *key, size_t *out_len) | |
fe6eb7f2 JK |
1676 | { |
1677 | int key_len = strlen(key); | |
1678 | const char *line = msg; | |
1679 | ||
cfc5cf42 JC |
1680 | /* |
1681 | * NEEDSWORK: It's possible for strchrnul() to scan beyond the range | |
1682 | * given by len. However, current callers are safe because they compute | |
1683 | * len by scanning a NUL-terminated block of memory starting at msg. | |
1684 | * Nonetheless, it would be better to ensure the function does not look | |
1685 | * at msg beyond the len provided by the caller. | |
1686 | */ | |
1687 | while (line && line < msg + len) { | |
fe6eb7f2 JK |
1688 | const char *eol = strchrnul(line, '\n'); |
1689 | ||
1690 | if (line == eol) | |
1691 | return NULL; | |
1692 | ||
1693 | if (eol - line > key_len && | |
1694 | !strncmp(line, key, key_len) && | |
1695 | line[key_len] == ' ') { | |
1696 | *out_len = eol - line - key_len - 1; | |
1697 | return line + key_len + 1; | |
1698 | } | |
1699 | line = *eol ? eol + 1 : NULL; | |
1700 | } | |
1701 | return NULL; | |
1702 | } | |
0ed8a4e1 | 1703 | |
cfc5cf42 JC |
1704 | const char *find_commit_header(const char *msg, const char *key, size_t *out_len) |
1705 | { | |
1706 | return find_header_mem(msg, strlen(msg), key, out_len); | |
1707 | } | |
8c384589 | 1708 | /* |
710714aa | 1709 | * Inspect the given string and determine the true "end" of the log message, in |
3abd4a67 | 1710 | * order to find where to put a new Signed-off-by trailer. Ignored are |
d76650b8 BM |
1711 | * trailing comment lines and blank lines. To support "git commit -s |
1712 | * --amend" on an existing commit, we also ignore "Conflicts:". To | |
1713 | * support "git commit -v", we truncate at cut lines. | |
8c384589 CC |
1714 | * |
1715 | * Returns the number of bytes from the tail to ignore, to be fed as | |
1716 | * the second parameter to append_signoff(). | |
1717 | */ | |
66e83d9b | 1718 | size_t ignore_non_trailer(const char *buf, size_t len) |
8c384589 | 1719 | { |
66e83d9b JK |
1720 | size_t boc = 0; |
1721 | size_t bol = 0; | |
8c384589 | 1722 | int in_old_conflicts_block = 0; |
d76650b8 | 1723 | size_t cutoff = wt_status_locate_end(buf, len); |
8c384589 | 1724 | |
d76650b8 | 1725 | while (bol < cutoff) { |
710714aa | 1726 | const char *next_line = memchr(buf + bol, '\n', len - bol); |
8c384589 | 1727 | |
710714aa JT |
1728 | if (!next_line) |
1729 | next_line = buf + len; | |
8c384589 CC |
1730 | else |
1731 | next_line++; | |
1732 | ||
710714aa | 1733 | if (buf[bol] == comment_line_char || buf[bol] == '\n') { |
8c384589 CC |
1734 | /* is this the first of the run of comments? */ |
1735 | if (!boc) | |
1736 | boc = bol; | |
1737 | /* otherwise, it is just continuing */ | |
710714aa | 1738 | } else if (starts_with(buf + bol, "Conflicts:\n")) { |
8c384589 CC |
1739 | in_old_conflicts_block = 1; |
1740 | if (!boc) | |
1741 | boc = bol; | |
710714aa | 1742 | } else if (in_old_conflicts_block && buf[bol] == '\t') { |
8c384589 CC |
1743 | ; /* a pathname in the conflicts block */ |
1744 | } else if (boc) { | |
1745 | /* the previous was not trailing comment */ | |
1746 | boc = 0; | |
1747 | in_old_conflicts_block = 0; | |
1748 | } | |
710714aa | 1749 | bol = next_line - buf; |
8c384589 | 1750 | } |
d76650b8 | 1751 | return boc ? len - boc : len - cutoff; |
8c384589 | 1752 | } |
49697cb7 PW |
1753 | |
1754 | int run_commit_hook(int editor_is_used, const char *index_file, | |
a8cc5943 | 1755 | int *invoked_hook, const char *name, ...) |
49697cb7 | 1756 | { |
f443246b | 1757 | struct run_hooks_opt opt = RUN_HOOKS_OPT_INIT; |
49697cb7 | 1758 | va_list args; |
f443246b | 1759 | const char *arg; |
49697cb7 | 1760 | |
f443246b | 1761 | strvec_pushf(&opt.env, "GIT_INDEX_FILE=%s", index_file); |
49697cb7 PW |
1762 | |
1763 | /* | |
1764 | * Let the hook know that no editor will be launched. | |
1765 | */ | |
1766 | if (!editor_is_used) | |
f443246b | 1767 | strvec_push(&opt.env, "GIT_EDITOR=:"); |
49697cb7 PW |
1768 | |
1769 | va_start(args, name); | |
f443246b ES |
1770 | while ((arg = va_arg(args, const char *))) |
1771 | strvec_push(&opt.args, arg); | |
49697cb7 | 1772 | va_end(args); |
49697cb7 | 1773 | |
4369e3a1 | 1774 | opt.invoked_hook = invoked_hook; |
f443246b | 1775 | return run_hooks_opt(name, &opt); |
49697cb7 | 1776 | } |