]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * GIT - The information manager from hell | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | * Copyright (C) Johannes Schindelin, 2005 | |
6 | * | |
7 | */ | |
8 | #include "cache.h" | |
9 | #include "lockfile.h" | |
10 | #include "exec_cmd.h" | |
11 | #include "strbuf.h" | |
12 | #include "quote.h" | |
13 | #include "hashmap.h" | |
14 | #include "string-list.h" | |
15 | #include "utf8.h" | |
16 | ||
17 | struct config_source { | |
18 | struct config_source *prev; | |
19 | union { | |
20 | FILE *file; | |
21 | struct config_buf { | |
22 | const char *buf; | |
23 | size_t len; | |
24 | size_t pos; | |
25 | } buf; | |
26 | } u; | |
27 | const char *name; | |
28 | const char *path; | |
29 | int die_on_error; | |
30 | int linenr; | |
31 | int eof; | |
32 | struct strbuf value; | |
33 | struct strbuf var; | |
34 | ||
35 | int (*do_fgetc)(struct config_source *c); | |
36 | int (*do_ungetc)(int c, struct config_source *conf); | |
37 | long (*do_ftell)(struct config_source *c); | |
38 | }; | |
39 | ||
40 | static struct config_source *cf; | |
41 | ||
42 | static int zlib_compression_seen; | |
43 | ||
44 | /* | |
45 | * Default config_set that contains key-value pairs from the usual set of config | |
46 | * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG | |
47 | * config file and the global /etc/gitconfig) | |
48 | */ | |
49 | static struct config_set the_config_set; | |
50 | ||
51 | static int config_file_fgetc(struct config_source *conf) | |
52 | { | |
53 | return getc_unlocked(conf->u.file); | |
54 | } | |
55 | ||
56 | static int config_file_ungetc(int c, struct config_source *conf) | |
57 | { | |
58 | return ungetc(c, conf->u.file); | |
59 | } | |
60 | ||
61 | static long config_file_ftell(struct config_source *conf) | |
62 | { | |
63 | return ftell(conf->u.file); | |
64 | } | |
65 | ||
66 | ||
67 | static int config_buf_fgetc(struct config_source *conf) | |
68 | { | |
69 | if (conf->u.buf.pos < conf->u.buf.len) | |
70 | return conf->u.buf.buf[conf->u.buf.pos++]; | |
71 | ||
72 | return EOF; | |
73 | } | |
74 | ||
75 | static int config_buf_ungetc(int c, struct config_source *conf) | |
76 | { | |
77 | if (conf->u.buf.pos > 0) { | |
78 | conf->u.buf.pos--; | |
79 | if (conf->u.buf.buf[conf->u.buf.pos] != c) | |
80 | die("BUG: config_buf can only ungetc the same character"); | |
81 | return c; | |
82 | } | |
83 | ||
84 | return EOF; | |
85 | } | |
86 | ||
87 | static long config_buf_ftell(struct config_source *conf) | |
88 | { | |
89 | return conf->u.buf.pos; | |
90 | } | |
91 | ||
92 | #define MAX_INCLUDE_DEPTH 10 | |
93 | static const char include_depth_advice[] = | |
94 | "exceeded maximum include depth (%d) while including\n" | |
95 | " %s\n" | |
96 | "from\n" | |
97 | " %s\n" | |
98 | "Do you have circular includes?"; | |
99 | static int handle_path_include(const char *path, struct config_include_data *inc) | |
100 | { | |
101 | int ret = 0; | |
102 | struct strbuf buf = STRBUF_INIT; | |
103 | char *expanded; | |
104 | ||
105 | if (!path) | |
106 | return config_error_nonbool("include.path"); | |
107 | ||
108 | expanded = expand_user_path(path); | |
109 | if (!expanded) | |
110 | return error("Could not expand include path '%s'", path); | |
111 | path = expanded; | |
112 | ||
113 | /* | |
114 | * Use an absolute path as-is, but interpret relative paths | |
115 | * based on the including config file. | |
116 | */ | |
117 | if (!is_absolute_path(path)) { | |
118 | char *slash; | |
119 | ||
120 | if (!cf || !cf->path) | |
121 | return error("relative config includes must come from files"); | |
122 | ||
123 | slash = find_last_dir_sep(cf->path); | |
124 | if (slash) | |
125 | strbuf_add(&buf, cf->path, slash - cf->path + 1); | |
126 | strbuf_addstr(&buf, path); | |
127 | path = buf.buf; | |
128 | } | |
129 | ||
130 | if (!access_or_die(path, R_OK, 0)) { | |
131 | if (++inc->depth > MAX_INCLUDE_DEPTH) | |
132 | die(include_depth_advice, MAX_INCLUDE_DEPTH, path, | |
133 | cf && cf->name ? cf->name : "the command line"); | |
134 | ret = git_config_from_file(git_config_include, path, inc); | |
135 | inc->depth--; | |
136 | } | |
137 | strbuf_release(&buf); | |
138 | free(expanded); | |
139 | return ret; | |
140 | } | |
141 | ||
142 | int git_config_include(const char *var, const char *value, void *data) | |
143 | { | |
144 | struct config_include_data *inc = data; | |
145 | int ret; | |
146 | ||
147 | /* | |
148 | * Pass along all values, including "include" directives; this makes it | |
149 | * possible to query information on the includes themselves. | |
150 | */ | |
151 | ret = inc->fn(var, value, inc->data); | |
152 | if (ret < 0) | |
153 | return ret; | |
154 | ||
155 | if (!strcmp(var, "include.path")) | |
156 | ret = handle_path_include(value, inc); | |
157 | return ret; | |
158 | } | |
159 | ||
160 | void git_config_push_parameter(const char *text) | |
161 | { | |
162 | struct strbuf env = STRBUF_INIT; | |
163 | const char *old = getenv(CONFIG_DATA_ENVIRONMENT); | |
164 | if (old) { | |
165 | strbuf_addstr(&env, old); | |
166 | strbuf_addch(&env, ' '); | |
167 | } | |
168 | sq_quote_buf(&env, text); | |
169 | setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1); | |
170 | strbuf_release(&env); | |
171 | } | |
172 | ||
173 | int git_config_parse_parameter(const char *text, | |
174 | config_fn_t fn, void *data) | |
175 | { | |
176 | const char *value; | |
177 | struct strbuf **pair; | |
178 | ||
179 | pair = strbuf_split_str(text, '=', 2); | |
180 | if (!pair[0]) | |
181 | return error("bogus config parameter: %s", text); | |
182 | ||
183 | if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') { | |
184 | strbuf_setlen(pair[0], pair[0]->len - 1); | |
185 | value = pair[1] ? pair[1]->buf : ""; | |
186 | } else { | |
187 | value = NULL; | |
188 | } | |
189 | ||
190 | strbuf_trim(pair[0]); | |
191 | if (!pair[0]->len) { | |
192 | strbuf_list_free(pair); | |
193 | return error("bogus config parameter: %s", text); | |
194 | } | |
195 | strbuf_tolower(pair[0]); | |
196 | if (fn(pair[0]->buf, value, data) < 0) { | |
197 | strbuf_list_free(pair); | |
198 | return -1; | |
199 | } | |
200 | strbuf_list_free(pair); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | int git_config_from_parameters(config_fn_t fn, void *data) | |
205 | { | |
206 | const char *env = getenv(CONFIG_DATA_ENVIRONMENT); | |
207 | char *envw; | |
208 | const char **argv = NULL; | |
209 | int nr = 0, alloc = 0; | |
210 | int i; | |
211 | ||
212 | if (!env) | |
213 | return 0; | |
214 | /* sq_dequote will write over it */ | |
215 | envw = xstrdup(env); | |
216 | ||
217 | if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) { | |
218 | free(envw); | |
219 | return error("bogus format in " CONFIG_DATA_ENVIRONMENT); | |
220 | } | |
221 | ||
222 | for (i = 0; i < nr; i++) { | |
223 | if (git_config_parse_parameter(argv[i], fn, data) < 0) { | |
224 | free(argv); | |
225 | free(envw); | |
226 | return -1; | |
227 | } | |
228 | } | |
229 | ||
230 | free(argv); | |
231 | free(envw); | |
232 | return nr > 0; | |
233 | } | |
234 | ||
235 | static int get_next_char(void) | |
236 | { | |
237 | int c = cf->do_fgetc(cf); | |
238 | ||
239 | if (c == '\r') { | |
240 | /* DOS like systems */ | |
241 | c = cf->do_fgetc(cf); | |
242 | if (c != '\n') { | |
243 | if (c != EOF) | |
244 | cf->do_ungetc(c, cf); | |
245 | c = '\r'; | |
246 | } | |
247 | } | |
248 | if (c == '\n') | |
249 | cf->linenr++; | |
250 | if (c == EOF) { | |
251 | cf->eof = 1; | |
252 | cf->linenr++; | |
253 | c = '\n'; | |
254 | } | |
255 | return c; | |
256 | } | |
257 | ||
258 | static char *parse_value(void) | |
259 | { | |
260 | int quote = 0, comment = 0, space = 0; | |
261 | ||
262 | strbuf_reset(&cf->value); | |
263 | for (;;) { | |
264 | int c = get_next_char(); | |
265 | if (c == '\n') { | |
266 | if (quote) { | |
267 | cf->linenr--; | |
268 | return NULL; | |
269 | } | |
270 | return cf->value.buf; | |
271 | } | |
272 | if (comment) | |
273 | continue; | |
274 | if (isspace(c) && !quote) { | |
275 | if (cf->value.len) | |
276 | space++; | |
277 | continue; | |
278 | } | |
279 | if (!quote) { | |
280 | if (c == ';' || c == '#') { | |
281 | comment = 1; | |
282 | continue; | |
283 | } | |
284 | } | |
285 | for (; space; space--) | |
286 | strbuf_addch(&cf->value, ' '); | |
287 | if (c == '\\') { | |
288 | c = get_next_char(); | |
289 | switch (c) { | |
290 | case '\n': | |
291 | continue; | |
292 | case 't': | |
293 | c = '\t'; | |
294 | break; | |
295 | case 'b': | |
296 | c = '\b'; | |
297 | break; | |
298 | case 'n': | |
299 | c = '\n'; | |
300 | break; | |
301 | /* Some characters escape as themselves */ | |
302 | case '\\': case '"': | |
303 | break; | |
304 | /* Reject unknown escape sequences */ | |
305 | default: | |
306 | return NULL; | |
307 | } | |
308 | strbuf_addch(&cf->value, c); | |
309 | continue; | |
310 | } | |
311 | if (c == '"') { | |
312 | quote = 1-quote; | |
313 | continue; | |
314 | } | |
315 | strbuf_addch(&cf->value, c); | |
316 | } | |
317 | } | |
318 | ||
319 | static inline int iskeychar(int c) | |
320 | { | |
321 | return isalnum(c) || c == '-'; | |
322 | } | |
323 | ||
324 | static int get_value(config_fn_t fn, void *data, struct strbuf *name) | |
325 | { | |
326 | int c; | |
327 | char *value; | |
328 | int ret; | |
329 | ||
330 | /* Get the full name */ | |
331 | for (;;) { | |
332 | c = get_next_char(); | |
333 | if (cf->eof) | |
334 | break; | |
335 | if (!iskeychar(c)) | |
336 | break; | |
337 | strbuf_addch(name, tolower(c)); | |
338 | } | |
339 | ||
340 | while (c == ' ' || c == '\t') | |
341 | c = get_next_char(); | |
342 | ||
343 | value = NULL; | |
344 | if (c != '\n') { | |
345 | if (c != '=') | |
346 | return -1; | |
347 | value = parse_value(); | |
348 | if (!value) | |
349 | return -1; | |
350 | } | |
351 | /* | |
352 | * We already consumed the \n, but we need linenr to point to | |
353 | * the line we just parsed during the call to fn to get | |
354 | * accurate line number in error messages. | |
355 | */ | |
356 | cf->linenr--; | |
357 | ret = fn(name->buf, value, data); | |
358 | cf->linenr++; | |
359 | return ret; | |
360 | } | |
361 | ||
362 | static int get_extended_base_var(struct strbuf *name, int c) | |
363 | { | |
364 | do { | |
365 | if (c == '\n') | |
366 | goto error_incomplete_line; | |
367 | c = get_next_char(); | |
368 | } while (isspace(c)); | |
369 | ||
370 | /* We require the format to be '[base "extension"]' */ | |
371 | if (c != '"') | |
372 | return -1; | |
373 | strbuf_addch(name, '.'); | |
374 | ||
375 | for (;;) { | |
376 | int c = get_next_char(); | |
377 | if (c == '\n') | |
378 | goto error_incomplete_line; | |
379 | if (c == '"') | |
380 | break; | |
381 | if (c == '\\') { | |
382 | c = get_next_char(); | |
383 | if (c == '\n') | |
384 | goto error_incomplete_line; | |
385 | } | |
386 | strbuf_addch(name, c); | |
387 | } | |
388 | ||
389 | /* Final ']' */ | |
390 | if (get_next_char() != ']') | |
391 | return -1; | |
392 | return 0; | |
393 | error_incomplete_line: | |
394 | cf->linenr--; | |
395 | return -1; | |
396 | } | |
397 | ||
398 | static int get_base_var(struct strbuf *name) | |
399 | { | |
400 | for (;;) { | |
401 | int c = get_next_char(); | |
402 | if (cf->eof) | |
403 | return -1; | |
404 | if (c == ']') | |
405 | return 0; | |
406 | if (isspace(c)) | |
407 | return get_extended_base_var(name, c); | |
408 | if (!iskeychar(c) && c != '.') | |
409 | return -1; | |
410 | strbuf_addch(name, tolower(c)); | |
411 | } | |
412 | } | |
413 | ||
414 | static int git_parse_source(config_fn_t fn, void *data) | |
415 | { | |
416 | int comment = 0; | |
417 | int baselen = 0; | |
418 | struct strbuf *var = &cf->var; | |
419 | ||
420 | /* U+FEFF Byte Order Mark in UTF8 */ | |
421 | const char *bomptr = utf8_bom; | |
422 | ||
423 | for (;;) { | |
424 | int c = get_next_char(); | |
425 | if (bomptr && *bomptr) { | |
426 | /* We are at the file beginning; skip UTF8-encoded BOM | |
427 | * if present. Sane editors won't put this in on their | |
428 | * own, but e.g. Windows Notepad will do it happily. */ | |
429 | if (c == (*bomptr & 0377)) { | |
430 | bomptr++; | |
431 | continue; | |
432 | } else { | |
433 | /* Do not tolerate partial BOM. */ | |
434 | if (bomptr != utf8_bom) | |
435 | break; | |
436 | /* No BOM at file beginning. Cool. */ | |
437 | bomptr = NULL; | |
438 | } | |
439 | } | |
440 | if (c == '\n') { | |
441 | if (cf->eof) | |
442 | return 0; | |
443 | comment = 0; | |
444 | continue; | |
445 | } | |
446 | if (comment || isspace(c)) | |
447 | continue; | |
448 | if (c == '#' || c == ';') { | |
449 | comment = 1; | |
450 | continue; | |
451 | } | |
452 | if (c == '[') { | |
453 | /* Reset prior to determining a new stem */ | |
454 | strbuf_reset(var); | |
455 | if (get_base_var(var) < 0 || var->len < 1) | |
456 | break; | |
457 | strbuf_addch(var, '.'); | |
458 | baselen = var->len; | |
459 | continue; | |
460 | } | |
461 | if (!isalpha(c)) | |
462 | break; | |
463 | /* | |
464 | * Truncate the var name back to the section header | |
465 | * stem prior to grabbing the suffix part of the name | |
466 | * and the value. | |
467 | */ | |
468 | strbuf_setlen(var, baselen); | |
469 | strbuf_addch(var, tolower(c)); | |
470 | if (get_value(fn, data, var) < 0) | |
471 | break; | |
472 | } | |
473 | if (cf->die_on_error) | |
474 | die(_("bad config file line %d in %s"), cf->linenr, cf->name); | |
475 | else | |
476 | return error(_("bad config file line %d in %s"), cf->linenr, cf->name); | |
477 | } | |
478 | ||
479 | static int parse_unit_factor(const char *end, uintmax_t *val) | |
480 | { | |
481 | if (!*end) | |
482 | return 1; | |
483 | else if (!strcasecmp(end, "k")) { | |
484 | *val *= 1024; | |
485 | return 1; | |
486 | } | |
487 | else if (!strcasecmp(end, "m")) { | |
488 | *val *= 1024 * 1024; | |
489 | return 1; | |
490 | } | |
491 | else if (!strcasecmp(end, "g")) { | |
492 | *val *= 1024 * 1024 * 1024; | |
493 | return 1; | |
494 | } | |
495 | return 0; | |
496 | } | |
497 | ||
498 | static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max) | |
499 | { | |
500 | if (value && *value) { | |
501 | char *end; | |
502 | intmax_t val; | |
503 | uintmax_t uval; | |
504 | uintmax_t factor = 1; | |
505 | ||
506 | errno = 0; | |
507 | val = strtoimax(value, &end, 0); | |
508 | if (errno == ERANGE) | |
509 | return 0; | |
510 | if (!parse_unit_factor(end, &factor)) { | |
511 | errno = EINVAL; | |
512 | return 0; | |
513 | } | |
514 | uval = labs(val); | |
515 | uval *= factor; | |
516 | if (uval > max || labs(val) > uval) { | |
517 | errno = ERANGE; | |
518 | return 0; | |
519 | } | |
520 | val *= factor; | |
521 | *ret = val; | |
522 | return 1; | |
523 | } | |
524 | errno = EINVAL; | |
525 | return 0; | |
526 | } | |
527 | ||
528 | static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max) | |
529 | { | |
530 | if (value && *value) { | |
531 | char *end; | |
532 | uintmax_t val; | |
533 | uintmax_t oldval; | |
534 | ||
535 | errno = 0; | |
536 | val = strtoumax(value, &end, 0); | |
537 | if (errno == ERANGE) | |
538 | return 0; | |
539 | oldval = val; | |
540 | if (!parse_unit_factor(end, &val)) { | |
541 | errno = EINVAL; | |
542 | return 0; | |
543 | } | |
544 | if (val > max || oldval > val) { | |
545 | errno = ERANGE; | |
546 | return 0; | |
547 | } | |
548 | *ret = val; | |
549 | return 1; | |
550 | } | |
551 | errno = EINVAL; | |
552 | return 0; | |
553 | } | |
554 | ||
555 | static int git_parse_int(const char *value, int *ret) | |
556 | { | |
557 | intmax_t tmp; | |
558 | if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int))) | |
559 | return 0; | |
560 | *ret = tmp; | |
561 | return 1; | |
562 | } | |
563 | ||
564 | static int git_parse_int64(const char *value, int64_t *ret) | |
565 | { | |
566 | intmax_t tmp; | |
567 | if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t))) | |
568 | return 0; | |
569 | *ret = tmp; | |
570 | return 1; | |
571 | } | |
572 | ||
573 | int git_parse_ulong(const char *value, unsigned long *ret) | |
574 | { | |
575 | uintmax_t tmp; | |
576 | if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long))) | |
577 | return 0; | |
578 | *ret = tmp; | |
579 | return 1; | |
580 | } | |
581 | ||
582 | NORETURN | |
583 | static void die_bad_number(const char *name, const char *value) | |
584 | { | |
585 | const char *reason = errno == ERANGE ? | |
586 | "out of range" : | |
587 | "invalid unit"; | |
588 | if (!value) | |
589 | value = ""; | |
590 | ||
591 | if (cf && cf->name) | |
592 | die(_("bad numeric config value '%s' for '%s' in %s: %s"), | |
593 | value, name, cf->name, reason); | |
594 | die(_("bad numeric config value '%s' for '%s': %s"), value, name, reason); | |
595 | } | |
596 | ||
597 | int git_config_int(const char *name, const char *value) | |
598 | { | |
599 | int ret; | |
600 | if (!git_parse_int(value, &ret)) | |
601 | die_bad_number(name, value); | |
602 | return ret; | |
603 | } | |
604 | ||
605 | int64_t git_config_int64(const char *name, const char *value) | |
606 | { | |
607 | int64_t ret; | |
608 | if (!git_parse_int64(value, &ret)) | |
609 | die_bad_number(name, value); | |
610 | return ret; | |
611 | } | |
612 | ||
613 | unsigned long git_config_ulong(const char *name, const char *value) | |
614 | { | |
615 | unsigned long ret; | |
616 | if (!git_parse_ulong(value, &ret)) | |
617 | die_bad_number(name, value); | |
618 | return ret; | |
619 | } | |
620 | ||
621 | static int git_config_maybe_bool_text(const char *name, const char *value) | |
622 | { | |
623 | if (!value) | |
624 | return 1; | |
625 | if (!*value) | |
626 | return 0; | |
627 | if (!strcasecmp(value, "true") | |
628 | || !strcasecmp(value, "yes") | |
629 | || !strcasecmp(value, "on")) | |
630 | return 1; | |
631 | if (!strcasecmp(value, "false") | |
632 | || !strcasecmp(value, "no") | |
633 | || !strcasecmp(value, "off")) | |
634 | return 0; | |
635 | return -1; | |
636 | } | |
637 | ||
638 | int git_config_maybe_bool(const char *name, const char *value) | |
639 | { | |
640 | int v = git_config_maybe_bool_text(name, value); | |
641 | if (0 <= v) | |
642 | return v; | |
643 | if (git_parse_int(value, &v)) | |
644 | return !!v; | |
645 | return -1; | |
646 | } | |
647 | ||
648 | int git_config_bool_or_int(const char *name, const char *value, int *is_bool) | |
649 | { | |
650 | int v = git_config_maybe_bool_text(name, value); | |
651 | if (0 <= v) { | |
652 | *is_bool = 1; | |
653 | return v; | |
654 | } | |
655 | *is_bool = 0; | |
656 | return git_config_int(name, value); | |
657 | } | |
658 | ||
659 | int git_config_bool(const char *name, const char *value) | |
660 | { | |
661 | int discard; | |
662 | return !!git_config_bool_or_int(name, value, &discard); | |
663 | } | |
664 | ||
665 | int git_config_string(const char **dest, const char *var, const char *value) | |
666 | { | |
667 | if (!value) | |
668 | return config_error_nonbool(var); | |
669 | *dest = xstrdup(value); | |
670 | return 0; | |
671 | } | |
672 | ||
673 | int git_config_pathname(const char **dest, const char *var, const char *value) | |
674 | { | |
675 | if (!value) | |
676 | return config_error_nonbool(var); | |
677 | *dest = expand_user_path(value); | |
678 | if (!*dest) | |
679 | die(_("failed to expand user dir in: '%s'"), value); | |
680 | return 0; | |
681 | } | |
682 | ||
683 | static int git_default_core_config(const char *var, const char *value) | |
684 | { | |
685 | /* This needs a better name */ | |
686 | if (!strcmp(var, "core.filemode")) { | |
687 | trust_executable_bit = git_config_bool(var, value); | |
688 | return 0; | |
689 | } | |
690 | if (!strcmp(var, "core.trustctime")) { | |
691 | trust_ctime = git_config_bool(var, value); | |
692 | return 0; | |
693 | } | |
694 | if (!strcmp(var, "core.checkstat")) { | |
695 | if (!strcasecmp(value, "default")) | |
696 | check_stat = 1; | |
697 | else if (!strcasecmp(value, "minimal")) | |
698 | check_stat = 0; | |
699 | } | |
700 | ||
701 | if (!strcmp(var, "core.quotepath")) { | |
702 | quote_path_fully = git_config_bool(var, value); | |
703 | return 0; | |
704 | } | |
705 | ||
706 | if (!strcmp(var, "core.symlinks")) { | |
707 | has_symlinks = git_config_bool(var, value); | |
708 | return 0; | |
709 | } | |
710 | ||
711 | if (!strcmp(var, "core.ignorecase")) { | |
712 | ignore_case = git_config_bool(var, value); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | if (!strcmp(var, "core.attributesfile")) | |
717 | return git_config_pathname(&git_attributes_file, var, value); | |
718 | ||
719 | if (!strcmp(var, "core.bare")) { | |
720 | is_bare_repository_cfg = git_config_bool(var, value); | |
721 | return 0; | |
722 | } | |
723 | ||
724 | if (!strcmp(var, "core.ignorestat")) { | |
725 | assume_unchanged = git_config_bool(var, value); | |
726 | return 0; | |
727 | } | |
728 | ||
729 | if (!strcmp(var, "core.prefersymlinkrefs")) { | |
730 | prefer_symlink_refs = git_config_bool(var, value); | |
731 | return 0; | |
732 | } | |
733 | ||
734 | if (!strcmp(var, "core.logallrefupdates")) { | |
735 | log_all_ref_updates = git_config_bool(var, value); | |
736 | return 0; | |
737 | } | |
738 | ||
739 | if (!strcmp(var, "core.warnambiguousrefs")) { | |
740 | warn_ambiguous_refs = git_config_bool(var, value); | |
741 | return 0; | |
742 | } | |
743 | ||
744 | if (!strcmp(var, "core.abbrev")) { | |
745 | int abbrev = git_config_int(var, value); | |
746 | if (abbrev < minimum_abbrev || abbrev > 40) | |
747 | return -1; | |
748 | default_abbrev = abbrev; | |
749 | return 0; | |
750 | } | |
751 | ||
752 | if (!strcmp(var, "core.loosecompression")) { | |
753 | int level = git_config_int(var, value); | |
754 | if (level == -1) | |
755 | level = Z_DEFAULT_COMPRESSION; | |
756 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
757 | die(_("bad zlib compression level %d"), level); | |
758 | zlib_compression_level = level; | |
759 | zlib_compression_seen = 1; | |
760 | return 0; | |
761 | } | |
762 | ||
763 | if (!strcmp(var, "core.compression")) { | |
764 | int level = git_config_int(var, value); | |
765 | if (level == -1) | |
766 | level = Z_DEFAULT_COMPRESSION; | |
767 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
768 | die(_("bad zlib compression level %d"), level); | |
769 | core_compression_level = level; | |
770 | core_compression_seen = 1; | |
771 | if (!zlib_compression_seen) | |
772 | zlib_compression_level = level; | |
773 | return 0; | |
774 | } | |
775 | ||
776 | if (!strcmp(var, "core.packedgitwindowsize")) { | |
777 | int pgsz_x2 = getpagesize() * 2; | |
778 | packed_git_window_size = git_config_ulong(var, value); | |
779 | ||
780 | /* This value must be multiple of (pagesize * 2) */ | |
781 | packed_git_window_size /= pgsz_x2; | |
782 | if (packed_git_window_size < 1) | |
783 | packed_git_window_size = 1; | |
784 | packed_git_window_size *= pgsz_x2; | |
785 | return 0; | |
786 | } | |
787 | ||
788 | if (!strcmp(var, "core.bigfilethreshold")) { | |
789 | big_file_threshold = git_config_ulong(var, value); | |
790 | return 0; | |
791 | } | |
792 | ||
793 | if (!strcmp(var, "core.packedgitlimit")) { | |
794 | packed_git_limit = git_config_ulong(var, value); | |
795 | return 0; | |
796 | } | |
797 | ||
798 | if (!strcmp(var, "core.deltabasecachelimit")) { | |
799 | delta_base_cache_limit = git_config_ulong(var, value); | |
800 | return 0; | |
801 | } | |
802 | ||
803 | if (!strcmp(var, "core.autocrlf")) { | |
804 | if (value && !strcasecmp(value, "input")) { | |
805 | if (core_eol == EOL_CRLF) | |
806 | return error("core.autocrlf=input conflicts with core.eol=crlf"); | |
807 | auto_crlf = AUTO_CRLF_INPUT; | |
808 | return 0; | |
809 | } | |
810 | auto_crlf = git_config_bool(var, value); | |
811 | return 0; | |
812 | } | |
813 | ||
814 | if (!strcmp(var, "core.safecrlf")) { | |
815 | if (value && !strcasecmp(value, "warn")) { | |
816 | safe_crlf = SAFE_CRLF_WARN; | |
817 | return 0; | |
818 | } | |
819 | safe_crlf = git_config_bool(var, value); | |
820 | return 0; | |
821 | } | |
822 | ||
823 | if (!strcmp(var, "core.eol")) { | |
824 | if (value && !strcasecmp(value, "lf")) | |
825 | core_eol = EOL_LF; | |
826 | else if (value && !strcasecmp(value, "crlf")) | |
827 | core_eol = EOL_CRLF; | |
828 | else if (value && !strcasecmp(value, "native")) | |
829 | core_eol = EOL_NATIVE; | |
830 | else | |
831 | core_eol = EOL_UNSET; | |
832 | if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT) | |
833 | return error("core.autocrlf=input conflicts with core.eol=crlf"); | |
834 | return 0; | |
835 | } | |
836 | ||
837 | if (!strcmp(var, "core.notesref")) { | |
838 | notes_ref_name = xstrdup(value); | |
839 | return 0; | |
840 | } | |
841 | ||
842 | if (!strcmp(var, "core.pager")) | |
843 | return git_config_string(&pager_program, var, value); | |
844 | ||
845 | if (!strcmp(var, "core.editor")) | |
846 | return git_config_string(&editor_program, var, value); | |
847 | ||
848 | if (!strcmp(var, "core.commentchar")) { | |
849 | if (!value) | |
850 | return config_error_nonbool(var); | |
851 | else if (!strcasecmp(value, "auto")) | |
852 | auto_comment_line_char = 1; | |
853 | else if (value[0] && !value[1]) { | |
854 | comment_line_char = value[0]; | |
855 | auto_comment_line_char = 0; | |
856 | } else | |
857 | return error("core.commentChar should only be one character"); | |
858 | return 0; | |
859 | } | |
860 | ||
861 | if (!strcmp(var, "core.askpass")) | |
862 | return git_config_string(&askpass_program, var, value); | |
863 | ||
864 | if (!strcmp(var, "core.excludesfile")) | |
865 | return git_config_pathname(&excludes_file, var, value); | |
866 | ||
867 | if (!strcmp(var, "core.whitespace")) { | |
868 | if (!value) | |
869 | return config_error_nonbool(var); | |
870 | whitespace_rule_cfg = parse_whitespace_rule(value); | |
871 | return 0; | |
872 | } | |
873 | ||
874 | if (!strcmp(var, "core.fsyncobjectfiles")) { | |
875 | fsync_object_files = git_config_bool(var, value); | |
876 | return 0; | |
877 | } | |
878 | ||
879 | if (!strcmp(var, "core.preloadindex")) { | |
880 | core_preload_index = git_config_bool(var, value); | |
881 | return 0; | |
882 | } | |
883 | ||
884 | if (!strcmp(var, "core.createobject")) { | |
885 | if (!strcmp(value, "rename")) | |
886 | object_creation_mode = OBJECT_CREATION_USES_RENAMES; | |
887 | else if (!strcmp(value, "link")) | |
888 | object_creation_mode = OBJECT_CREATION_USES_HARDLINKS; | |
889 | else | |
890 | die(_("invalid mode for object creation: %s"), value); | |
891 | return 0; | |
892 | } | |
893 | ||
894 | if (!strcmp(var, "core.sparsecheckout")) { | |
895 | core_apply_sparse_checkout = git_config_bool(var, value); | |
896 | return 0; | |
897 | } | |
898 | ||
899 | if (!strcmp(var, "core.precomposeunicode")) { | |
900 | precomposed_unicode = git_config_bool(var, value); | |
901 | return 0; | |
902 | } | |
903 | ||
904 | if (!strcmp(var, "core.protecthfs")) { | |
905 | protect_hfs = git_config_bool(var, value); | |
906 | return 0; | |
907 | } | |
908 | ||
909 | if (!strcmp(var, "core.protectntfs")) { | |
910 | protect_ntfs = git_config_bool(var, value); | |
911 | return 0; | |
912 | } | |
913 | ||
914 | /* Add other config variables here and to Documentation/config.txt. */ | |
915 | return 0; | |
916 | } | |
917 | ||
918 | static int git_default_i18n_config(const char *var, const char *value) | |
919 | { | |
920 | if (!strcmp(var, "i18n.commitencoding")) | |
921 | return git_config_string(&git_commit_encoding, var, value); | |
922 | ||
923 | if (!strcmp(var, "i18n.logoutputencoding")) | |
924 | return git_config_string(&git_log_output_encoding, var, value); | |
925 | ||
926 | /* Add other config variables here and to Documentation/config.txt. */ | |
927 | return 0; | |
928 | } | |
929 | ||
930 | static int git_default_branch_config(const char *var, const char *value) | |
931 | { | |
932 | if (!strcmp(var, "branch.autosetupmerge")) { | |
933 | if (value && !strcasecmp(value, "always")) { | |
934 | git_branch_track = BRANCH_TRACK_ALWAYS; | |
935 | return 0; | |
936 | } | |
937 | git_branch_track = git_config_bool(var, value); | |
938 | return 0; | |
939 | } | |
940 | if (!strcmp(var, "branch.autosetuprebase")) { | |
941 | if (!value) | |
942 | return config_error_nonbool(var); | |
943 | else if (!strcmp(value, "never")) | |
944 | autorebase = AUTOREBASE_NEVER; | |
945 | else if (!strcmp(value, "local")) | |
946 | autorebase = AUTOREBASE_LOCAL; | |
947 | else if (!strcmp(value, "remote")) | |
948 | autorebase = AUTOREBASE_REMOTE; | |
949 | else if (!strcmp(value, "always")) | |
950 | autorebase = AUTOREBASE_ALWAYS; | |
951 | else | |
952 | return error("Malformed value for %s", var); | |
953 | return 0; | |
954 | } | |
955 | ||
956 | /* Add other config variables here and to Documentation/config.txt. */ | |
957 | return 0; | |
958 | } | |
959 | ||
960 | static int git_default_push_config(const char *var, const char *value) | |
961 | { | |
962 | if (!strcmp(var, "push.default")) { | |
963 | if (!value) | |
964 | return config_error_nonbool(var); | |
965 | else if (!strcmp(value, "nothing")) | |
966 | push_default = PUSH_DEFAULT_NOTHING; | |
967 | else if (!strcmp(value, "matching")) | |
968 | push_default = PUSH_DEFAULT_MATCHING; | |
969 | else if (!strcmp(value, "simple")) | |
970 | push_default = PUSH_DEFAULT_SIMPLE; | |
971 | else if (!strcmp(value, "upstream")) | |
972 | push_default = PUSH_DEFAULT_UPSTREAM; | |
973 | else if (!strcmp(value, "tracking")) /* deprecated */ | |
974 | push_default = PUSH_DEFAULT_UPSTREAM; | |
975 | else if (!strcmp(value, "current")) | |
976 | push_default = PUSH_DEFAULT_CURRENT; | |
977 | else { | |
978 | error("Malformed value for %s: %s", var, value); | |
979 | return error("Must be one of nothing, matching, simple, " | |
980 | "upstream or current."); | |
981 | } | |
982 | return 0; | |
983 | } | |
984 | ||
985 | /* Add other config variables here and to Documentation/config.txt. */ | |
986 | return 0; | |
987 | } | |
988 | ||
989 | static int git_default_mailmap_config(const char *var, const char *value) | |
990 | { | |
991 | if (!strcmp(var, "mailmap.file")) | |
992 | return git_config_pathname(&git_mailmap_file, var, value); | |
993 | if (!strcmp(var, "mailmap.blob")) | |
994 | return git_config_string(&git_mailmap_blob, var, value); | |
995 | ||
996 | /* Add other config variables here and to Documentation/config.txt. */ | |
997 | return 0; | |
998 | } | |
999 | ||
1000 | int git_default_config(const char *var, const char *value, void *dummy) | |
1001 | { | |
1002 | if (starts_with(var, "core.")) | |
1003 | return git_default_core_config(var, value); | |
1004 | ||
1005 | if (starts_with(var, "user.")) | |
1006 | return git_ident_config(var, value, dummy); | |
1007 | ||
1008 | if (starts_with(var, "i18n.")) | |
1009 | return git_default_i18n_config(var, value); | |
1010 | ||
1011 | if (starts_with(var, "branch.")) | |
1012 | return git_default_branch_config(var, value); | |
1013 | ||
1014 | if (starts_with(var, "push.")) | |
1015 | return git_default_push_config(var, value); | |
1016 | ||
1017 | if (starts_with(var, "mailmap.")) | |
1018 | return git_default_mailmap_config(var, value); | |
1019 | ||
1020 | if (starts_with(var, "advice.")) | |
1021 | return git_default_advice_config(var, value); | |
1022 | ||
1023 | if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) { | |
1024 | pager_use_color = git_config_bool(var,value); | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | if (!strcmp(var, "pack.packsizelimit")) { | |
1029 | pack_size_limit_cfg = git_config_ulong(var, value); | |
1030 | return 0; | |
1031 | } | |
1032 | /* Add other config variables here and to Documentation/config.txt. */ | |
1033 | return 0; | |
1034 | } | |
1035 | ||
1036 | /* | |
1037 | * All source specific fields in the union, die_on_error, name and the callbacks | |
1038 | * fgetc, ungetc, ftell of top need to be initialized before calling | |
1039 | * this function. | |
1040 | */ | |
1041 | static int do_config_from(struct config_source *top, config_fn_t fn, void *data) | |
1042 | { | |
1043 | int ret; | |
1044 | ||
1045 | /* push config-file parsing state stack */ | |
1046 | top->prev = cf; | |
1047 | top->linenr = 1; | |
1048 | top->eof = 0; | |
1049 | strbuf_init(&top->value, 1024); | |
1050 | strbuf_init(&top->var, 1024); | |
1051 | cf = top; | |
1052 | ||
1053 | ret = git_parse_source(fn, data); | |
1054 | ||
1055 | /* pop config-file parsing state stack */ | |
1056 | strbuf_release(&top->value); | |
1057 | strbuf_release(&top->var); | |
1058 | cf = top->prev; | |
1059 | ||
1060 | return ret; | |
1061 | } | |
1062 | ||
1063 | static int do_config_from_file(config_fn_t fn, | |
1064 | const char *name, const char *path, FILE *f, void *data) | |
1065 | { | |
1066 | struct config_source top; | |
1067 | ||
1068 | top.u.file = f; | |
1069 | top.name = name; | |
1070 | top.path = path; | |
1071 | top.die_on_error = 1; | |
1072 | top.do_fgetc = config_file_fgetc; | |
1073 | top.do_ungetc = config_file_ungetc; | |
1074 | top.do_ftell = config_file_ftell; | |
1075 | ||
1076 | return do_config_from(&top, fn, data); | |
1077 | } | |
1078 | ||
1079 | static int git_config_from_stdin(config_fn_t fn, void *data) | |
1080 | { | |
1081 | return do_config_from_file(fn, "<stdin>", NULL, stdin, data); | |
1082 | } | |
1083 | ||
1084 | int git_config_from_file(config_fn_t fn, const char *filename, void *data) | |
1085 | { | |
1086 | int ret = -1; | |
1087 | FILE *f; | |
1088 | ||
1089 | f = fopen(filename, "r"); | |
1090 | if (f) { | |
1091 | flockfile(f); | |
1092 | ret = do_config_from_file(fn, filename, filename, f, data); | |
1093 | funlockfile(f); | |
1094 | fclose(f); | |
1095 | } | |
1096 | return ret; | |
1097 | } | |
1098 | ||
1099 | int git_config_from_buf(config_fn_t fn, const char *name, const char *buf, | |
1100 | size_t len, void *data) | |
1101 | { | |
1102 | struct config_source top; | |
1103 | ||
1104 | top.u.buf.buf = buf; | |
1105 | top.u.buf.len = len; | |
1106 | top.u.buf.pos = 0; | |
1107 | top.name = name; | |
1108 | top.path = NULL; | |
1109 | top.die_on_error = 0; | |
1110 | top.do_fgetc = config_buf_fgetc; | |
1111 | top.do_ungetc = config_buf_ungetc; | |
1112 | top.do_ftell = config_buf_ftell; | |
1113 | ||
1114 | return do_config_from(&top, fn, data); | |
1115 | } | |
1116 | ||
1117 | static int git_config_from_blob_sha1(config_fn_t fn, | |
1118 | const char *name, | |
1119 | const unsigned char *sha1, | |
1120 | void *data) | |
1121 | { | |
1122 | enum object_type type; | |
1123 | char *buf; | |
1124 | unsigned long size; | |
1125 | int ret; | |
1126 | ||
1127 | buf = read_sha1_file(sha1, &type, &size); | |
1128 | if (!buf) | |
1129 | return error("unable to load config blob object '%s'", name); | |
1130 | if (type != OBJ_BLOB) { | |
1131 | free(buf); | |
1132 | return error("reference '%s' does not point to a blob", name); | |
1133 | } | |
1134 | ||
1135 | ret = git_config_from_buf(fn, name, buf, size, data); | |
1136 | free(buf); | |
1137 | ||
1138 | return ret; | |
1139 | } | |
1140 | ||
1141 | static int git_config_from_blob_ref(config_fn_t fn, | |
1142 | const char *name, | |
1143 | void *data) | |
1144 | { | |
1145 | unsigned char sha1[20]; | |
1146 | ||
1147 | if (get_sha1(name, sha1) < 0) | |
1148 | return error("unable to resolve config blob '%s'", name); | |
1149 | return git_config_from_blob_sha1(fn, name, sha1, data); | |
1150 | } | |
1151 | ||
1152 | const char *git_etc_gitconfig(void) | |
1153 | { | |
1154 | static const char *system_wide; | |
1155 | if (!system_wide) | |
1156 | system_wide = system_path(ETC_GITCONFIG); | |
1157 | return system_wide; | |
1158 | } | |
1159 | ||
1160 | /* | |
1161 | * Parse environment variable 'k' as a boolean (in various | |
1162 | * possible spellings); if missing, use the default value 'def'. | |
1163 | */ | |
1164 | int git_env_bool(const char *k, int def) | |
1165 | { | |
1166 | const char *v = getenv(k); | |
1167 | return v ? git_config_bool(k, v) : def; | |
1168 | } | |
1169 | ||
1170 | /* | |
1171 | * Parse environment variable 'k' as ulong with possibly a unit | |
1172 | * suffix; if missing, use the default value 'val'. | |
1173 | */ | |
1174 | unsigned long git_env_ulong(const char *k, unsigned long val) | |
1175 | { | |
1176 | const char *v = getenv(k); | |
1177 | if (v && !git_parse_ulong(v, &val)) | |
1178 | die("failed to parse %s", k); | |
1179 | return val; | |
1180 | } | |
1181 | ||
1182 | int git_config_system(void) | |
1183 | { | |
1184 | return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0); | |
1185 | } | |
1186 | ||
1187 | int git_config_early(config_fn_t fn, void *data, const char *repo_config) | |
1188 | { | |
1189 | int ret = 0, found = 0; | |
1190 | char *xdg_config = xdg_config_home("config"); | |
1191 | char *user_config = expand_user_path("~/.gitconfig"); | |
1192 | ||
1193 | if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0)) { | |
1194 | ret += git_config_from_file(fn, git_etc_gitconfig(), | |
1195 | data); | |
1196 | found += 1; | |
1197 | } | |
1198 | ||
1199 | if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK)) { | |
1200 | ret += git_config_from_file(fn, xdg_config, data); | |
1201 | found += 1; | |
1202 | } | |
1203 | ||
1204 | if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK)) { | |
1205 | ret += git_config_from_file(fn, user_config, data); | |
1206 | found += 1; | |
1207 | } | |
1208 | ||
1209 | if (repo_config && !access_or_die(repo_config, R_OK, 0)) { | |
1210 | ret += git_config_from_file(fn, repo_config, data); | |
1211 | found += 1; | |
1212 | } | |
1213 | ||
1214 | switch (git_config_from_parameters(fn, data)) { | |
1215 | case -1: /* error */ | |
1216 | die(_("unable to parse command-line config")); | |
1217 | break; | |
1218 | case 0: /* found nothing */ | |
1219 | break; | |
1220 | default: /* found at least one item */ | |
1221 | found++; | |
1222 | break; | |
1223 | } | |
1224 | ||
1225 | free(xdg_config); | |
1226 | free(user_config); | |
1227 | return ret == 0 ? found : ret; | |
1228 | } | |
1229 | ||
1230 | int git_config_with_options(config_fn_t fn, void *data, | |
1231 | struct git_config_source *config_source, | |
1232 | int respect_includes) | |
1233 | { | |
1234 | char *repo_config = NULL; | |
1235 | int ret; | |
1236 | struct config_include_data inc = CONFIG_INCLUDE_INIT; | |
1237 | ||
1238 | if (respect_includes) { | |
1239 | inc.fn = fn; | |
1240 | inc.data = data; | |
1241 | fn = git_config_include; | |
1242 | data = &inc; | |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * If we have a specific filename, use it. Otherwise, follow the | |
1247 | * regular lookup sequence. | |
1248 | */ | |
1249 | if (config_source && config_source->use_stdin) | |
1250 | return git_config_from_stdin(fn, data); | |
1251 | else if (config_source && config_source->file) | |
1252 | return git_config_from_file(fn, config_source->file, data); | |
1253 | else if (config_source && config_source->blob) | |
1254 | return git_config_from_blob_ref(fn, config_source->blob, data); | |
1255 | ||
1256 | repo_config = git_pathdup("config"); | |
1257 | ret = git_config_early(fn, data, repo_config); | |
1258 | if (repo_config) | |
1259 | free(repo_config); | |
1260 | return ret; | |
1261 | } | |
1262 | ||
1263 | static void git_config_raw(config_fn_t fn, void *data) | |
1264 | { | |
1265 | if (git_config_with_options(fn, data, NULL, 1) < 0) | |
1266 | /* | |
1267 | * git_config_with_options() normally returns only | |
1268 | * positive values, as most errors are fatal, and | |
1269 | * non-fatal potential errors are guarded by "if" | |
1270 | * statements that are entered only when no error is | |
1271 | * possible. | |
1272 | * | |
1273 | * If we ever encounter a non-fatal error, it means | |
1274 | * something went really wrong and we should stop | |
1275 | * immediately. | |
1276 | */ | |
1277 | die(_("unknown error occured while reading the configuration files")); | |
1278 | } | |
1279 | ||
1280 | static void configset_iter(struct config_set *cs, config_fn_t fn, void *data) | |
1281 | { | |
1282 | int i, value_index; | |
1283 | struct string_list *values; | |
1284 | struct config_set_element *entry; | |
1285 | struct configset_list *list = &cs->list; | |
1286 | struct key_value_info *kv_info; | |
1287 | ||
1288 | for (i = 0; i < list->nr; i++) { | |
1289 | entry = list->items[i].e; | |
1290 | value_index = list->items[i].value_index; | |
1291 | values = &entry->value_list; | |
1292 | if (fn(entry->key, values->items[value_index].string, data) < 0) { | |
1293 | kv_info = values->items[value_index].util; | |
1294 | git_die_config_linenr(entry->key, kv_info->filename, kv_info->linenr); | |
1295 | } | |
1296 | } | |
1297 | } | |
1298 | ||
1299 | static void git_config_check_init(void); | |
1300 | ||
1301 | void git_config(config_fn_t fn, void *data) | |
1302 | { | |
1303 | git_config_check_init(); | |
1304 | configset_iter(&the_config_set, fn, data); | |
1305 | } | |
1306 | ||
1307 | static struct config_set_element *configset_find_element(struct config_set *cs, const char *key) | |
1308 | { | |
1309 | struct config_set_element k; | |
1310 | struct config_set_element *found_entry; | |
1311 | char *normalized_key; | |
1312 | int ret; | |
1313 | /* | |
1314 | * `key` may come from the user, so normalize it before using it | |
1315 | * for querying entries from the hashmap. | |
1316 | */ | |
1317 | ret = git_config_parse_key(key, &normalized_key, NULL); | |
1318 | ||
1319 | if (ret) | |
1320 | return NULL; | |
1321 | ||
1322 | hashmap_entry_init(&k, strhash(normalized_key)); | |
1323 | k.key = normalized_key; | |
1324 | found_entry = hashmap_get(&cs->config_hash, &k, NULL); | |
1325 | free(normalized_key); | |
1326 | return found_entry; | |
1327 | } | |
1328 | ||
1329 | static int configset_add_value(struct config_set *cs, const char *key, const char *value) | |
1330 | { | |
1331 | struct config_set_element *e; | |
1332 | struct string_list_item *si; | |
1333 | struct configset_list_item *l_item; | |
1334 | struct key_value_info *kv_info = xmalloc(sizeof(*kv_info)); | |
1335 | ||
1336 | e = configset_find_element(cs, key); | |
1337 | /* | |
1338 | * Since the keys are being fed by git_config*() callback mechanism, they | |
1339 | * are already normalized. So simply add them without any further munging. | |
1340 | */ | |
1341 | if (!e) { | |
1342 | e = xmalloc(sizeof(*e)); | |
1343 | hashmap_entry_init(e, strhash(key)); | |
1344 | e->key = xstrdup(key); | |
1345 | string_list_init(&e->value_list, 1); | |
1346 | hashmap_add(&cs->config_hash, e); | |
1347 | } | |
1348 | si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value)); | |
1349 | ||
1350 | ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc); | |
1351 | l_item = &cs->list.items[cs->list.nr++]; | |
1352 | l_item->e = e; | |
1353 | l_item->value_index = e->value_list.nr - 1; | |
1354 | ||
1355 | if (cf) { | |
1356 | kv_info->filename = strintern(cf->name); | |
1357 | kv_info->linenr = cf->linenr; | |
1358 | } else { | |
1359 | /* for values read from `git_config_from_parameters()` */ | |
1360 | kv_info->filename = NULL; | |
1361 | kv_info->linenr = -1; | |
1362 | } | |
1363 | si->util = kv_info; | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | static int config_set_element_cmp(const struct config_set_element *e1, | |
1369 | const struct config_set_element *e2, const void *unused) | |
1370 | { | |
1371 | return strcmp(e1->key, e2->key); | |
1372 | } | |
1373 | ||
1374 | void git_configset_init(struct config_set *cs) | |
1375 | { | |
1376 | hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0); | |
1377 | cs->hash_initialized = 1; | |
1378 | cs->list.nr = 0; | |
1379 | cs->list.alloc = 0; | |
1380 | cs->list.items = NULL; | |
1381 | } | |
1382 | ||
1383 | void git_configset_clear(struct config_set *cs) | |
1384 | { | |
1385 | struct config_set_element *entry; | |
1386 | struct hashmap_iter iter; | |
1387 | if (!cs->hash_initialized) | |
1388 | return; | |
1389 | ||
1390 | hashmap_iter_init(&cs->config_hash, &iter); | |
1391 | while ((entry = hashmap_iter_next(&iter))) { | |
1392 | free(entry->key); | |
1393 | string_list_clear(&entry->value_list, 1); | |
1394 | } | |
1395 | hashmap_free(&cs->config_hash, 1); | |
1396 | cs->hash_initialized = 0; | |
1397 | free(cs->list.items); | |
1398 | cs->list.nr = 0; | |
1399 | cs->list.alloc = 0; | |
1400 | cs->list.items = NULL; | |
1401 | } | |
1402 | ||
1403 | static int config_set_callback(const char *key, const char *value, void *cb) | |
1404 | { | |
1405 | struct config_set *cs = cb; | |
1406 | configset_add_value(cs, key, value); | |
1407 | return 0; | |
1408 | } | |
1409 | ||
1410 | int git_configset_add_file(struct config_set *cs, const char *filename) | |
1411 | { | |
1412 | return git_config_from_file(config_set_callback, filename, cs); | |
1413 | } | |
1414 | ||
1415 | int git_configset_get_value(struct config_set *cs, const char *key, const char **value) | |
1416 | { | |
1417 | const struct string_list *values = NULL; | |
1418 | /* | |
1419 | * Follows "last one wins" semantic, i.e., if there are multiple matches for the | |
1420 | * queried key in the files of the configset, the value returned will be the last | |
1421 | * value in the value list for that key. | |
1422 | */ | |
1423 | values = git_configset_get_value_multi(cs, key); | |
1424 | ||
1425 | if (!values) | |
1426 | return 1; | |
1427 | assert(values->nr > 0); | |
1428 | *value = values->items[values->nr - 1].string; | |
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key) | |
1433 | { | |
1434 | struct config_set_element *e = configset_find_element(cs, key); | |
1435 | return e ? &e->value_list : NULL; | |
1436 | } | |
1437 | ||
1438 | int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest) | |
1439 | { | |
1440 | const char *value; | |
1441 | if (!git_configset_get_value(cs, key, &value)) | |
1442 | return git_config_string(dest, key, value); | |
1443 | else | |
1444 | return 1; | |
1445 | } | |
1446 | ||
1447 | int git_configset_get_string(struct config_set *cs, const char *key, char **dest) | |
1448 | { | |
1449 | return git_configset_get_string_const(cs, key, (const char **)dest); | |
1450 | } | |
1451 | ||
1452 | int git_configset_get_int(struct config_set *cs, const char *key, int *dest) | |
1453 | { | |
1454 | const char *value; | |
1455 | if (!git_configset_get_value(cs, key, &value)) { | |
1456 | *dest = git_config_int(key, value); | |
1457 | return 0; | |
1458 | } else | |
1459 | return 1; | |
1460 | } | |
1461 | ||
1462 | int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest) | |
1463 | { | |
1464 | const char *value; | |
1465 | if (!git_configset_get_value(cs, key, &value)) { | |
1466 | *dest = git_config_ulong(key, value); | |
1467 | return 0; | |
1468 | } else | |
1469 | return 1; | |
1470 | } | |
1471 | ||
1472 | int git_configset_get_bool(struct config_set *cs, const char *key, int *dest) | |
1473 | { | |
1474 | const char *value; | |
1475 | if (!git_configset_get_value(cs, key, &value)) { | |
1476 | *dest = git_config_bool(key, value); | |
1477 | return 0; | |
1478 | } else | |
1479 | return 1; | |
1480 | } | |
1481 | ||
1482 | int git_configset_get_bool_or_int(struct config_set *cs, const char *key, | |
1483 | int *is_bool, int *dest) | |
1484 | { | |
1485 | const char *value; | |
1486 | if (!git_configset_get_value(cs, key, &value)) { | |
1487 | *dest = git_config_bool_or_int(key, value, is_bool); | |
1488 | return 0; | |
1489 | } else | |
1490 | return 1; | |
1491 | } | |
1492 | ||
1493 | int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest) | |
1494 | { | |
1495 | const char *value; | |
1496 | if (!git_configset_get_value(cs, key, &value)) { | |
1497 | *dest = git_config_maybe_bool(key, value); | |
1498 | if (*dest == -1) | |
1499 | return -1; | |
1500 | return 0; | |
1501 | } else | |
1502 | return 1; | |
1503 | } | |
1504 | ||
1505 | int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest) | |
1506 | { | |
1507 | const char *value; | |
1508 | if (!git_configset_get_value(cs, key, &value)) | |
1509 | return git_config_pathname(dest, key, value); | |
1510 | else | |
1511 | return 1; | |
1512 | } | |
1513 | ||
1514 | static void git_config_check_init(void) | |
1515 | { | |
1516 | if (the_config_set.hash_initialized) | |
1517 | return; | |
1518 | git_configset_init(&the_config_set); | |
1519 | git_config_raw(config_set_callback, &the_config_set); | |
1520 | } | |
1521 | ||
1522 | void git_config_clear(void) | |
1523 | { | |
1524 | if (!the_config_set.hash_initialized) | |
1525 | return; | |
1526 | git_configset_clear(&the_config_set); | |
1527 | } | |
1528 | ||
1529 | int git_config_get_value(const char *key, const char **value) | |
1530 | { | |
1531 | git_config_check_init(); | |
1532 | return git_configset_get_value(&the_config_set, key, value); | |
1533 | } | |
1534 | ||
1535 | const struct string_list *git_config_get_value_multi(const char *key) | |
1536 | { | |
1537 | git_config_check_init(); | |
1538 | return git_configset_get_value_multi(&the_config_set, key); | |
1539 | } | |
1540 | ||
1541 | int git_config_get_string_const(const char *key, const char **dest) | |
1542 | { | |
1543 | int ret; | |
1544 | git_config_check_init(); | |
1545 | ret = git_configset_get_string_const(&the_config_set, key, dest); | |
1546 | if (ret < 0) | |
1547 | git_die_config(key, NULL); | |
1548 | return ret; | |
1549 | } | |
1550 | ||
1551 | int git_config_get_string(const char *key, char **dest) | |
1552 | { | |
1553 | git_config_check_init(); | |
1554 | return git_config_get_string_const(key, (const char **)dest); | |
1555 | } | |
1556 | ||
1557 | int git_config_get_int(const char *key, int *dest) | |
1558 | { | |
1559 | git_config_check_init(); | |
1560 | return git_configset_get_int(&the_config_set, key, dest); | |
1561 | } | |
1562 | ||
1563 | int git_config_get_ulong(const char *key, unsigned long *dest) | |
1564 | { | |
1565 | git_config_check_init(); | |
1566 | return git_configset_get_ulong(&the_config_set, key, dest); | |
1567 | } | |
1568 | ||
1569 | int git_config_get_bool(const char *key, int *dest) | |
1570 | { | |
1571 | git_config_check_init(); | |
1572 | return git_configset_get_bool(&the_config_set, key, dest); | |
1573 | } | |
1574 | ||
1575 | int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest) | |
1576 | { | |
1577 | git_config_check_init(); | |
1578 | return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest); | |
1579 | } | |
1580 | ||
1581 | int git_config_get_maybe_bool(const char *key, int *dest) | |
1582 | { | |
1583 | git_config_check_init(); | |
1584 | return git_configset_get_maybe_bool(&the_config_set, key, dest); | |
1585 | } | |
1586 | ||
1587 | int git_config_get_pathname(const char *key, const char **dest) | |
1588 | { | |
1589 | int ret; | |
1590 | git_config_check_init(); | |
1591 | ret = git_configset_get_pathname(&the_config_set, key, dest); | |
1592 | if (ret < 0) | |
1593 | git_die_config(key, NULL); | |
1594 | return ret; | |
1595 | } | |
1596 | ||
1597 | NORETURN | |
1598 | void git_die_config_linenr(const char *key, const char *filename, int linenr) | |
1599 | { | |
1600 | if (!filename) | |
1601 | die(_("unable to parse '%s' from command-line config"), key); | |
1602 | else | |
1603 | die(_("bad config variable '%s' in file '%s' at line %d"), | |
1604 | key, filename, linenr); | |
1605 | } | |
1606 | ||
1607 | NORETURN __attribute__((format(printf, 2, 3))) | |
1608 | void git_die_config(const char *key, const char *err, ...) | |
1609 | { | |
1610 | const struct string_list *values; | |
1611 | struct key_value_info *kv_info; | |
1612 | ||
1613 | if (err) { | |
1614 | va_list params; | |
1615 | va_start(params, err); | |
1616 | vreportf("error: ", err, params); | |
1617 | va_end(params); | |
1618 | } | |
1619 | values = git_config_get_value_multi(key); | |
1620 | kv_info = values->items[values->nr - 1].util; | |
1621 | git_die_config_linenr(key, kv_info->filename, kv_info->linenr); | |
1622 | } | |
1623 | ||
1624 | /* | |
1625 | * Find all the stuff for git_config_set() below. | |
1626 | */ | |
1627 | ||
1628 | static struct { | |
1629 | int baselen; | |
1630 | char *key; | |
1631 | int do_not_match; | |
1632 | regex_t *value_regex; | |
1633 | int multi_replace; | |
1634 | size_t *offset; | |
1635 | unsigned int offset_alloc; | |
1636 | enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state; | |
1637 | int seen; | |
1638 | } store; | |
1639 | ||
1640 | static int matches(const char *key, const char *value) | |
1641 | { | |
1642 | if (strcmp(key, store.key)) | |
1643 | return 0; /* not ours */ | |
1644 | if (!store.value_regex) | |
1645 | return 1; /* always matches */ | |
1646 | if (store.value_regex == CONFIG_REGEX_NONE) | |
1647 | return 0; /* never matches */ | |
1648 | ||
1649 | return store.do_not_match ^ | |
1650 | (value && !regexec(store.value_regex, value, 0, NULL, 0)); | |
1651 | } | |
1652 | ||
1653 | static int store_aux(const char *key, const char *value, void *cb) | |
1654 | { | |
1655 | const char *ep; | |
1656 | size_t section_len; | |
1657 | ||
1658 | switch (store.state) { | |
1659 | case KEY_SEEN: | |
1660 | if (matches(key, value)) { | |
1661 | if (store.seen == 1 && store.multi_replace == 0) { | |
1662 | warning(_("%s has multiple values"), key); | |
1663 | } | |
1664 | ||
1665 | ALLOC_GROW(store.offset, store.seen + 1, | |
1666 | store.offset_alloc); | |
1667 | ||
1668 | store.offset[store.seen] = cf->do_ftell(cf); | |
1669 | store.seen++; | |
1670 | } | |
1671 | break; | |
1672 | case SECTION_SEEN: | |
1673 | /* | |
1674 | * What we are looking for is in store.key (both | |
1675 | * section and var), and its section part is baselen | |
1676 | * long. We found key (again, both section and var). | |
1677 | * We would want to know if this key is in the same | |
1678 | * section as what we are looking for. We already | |
1679 | * know we are in the same section as what should | |
1680 | * hold store.key. | |
1681 | */ | |
1682 | ep = strrchr(key, '.'); | |
1683 | section_len = ep - key; | |
1684 | ||
1685 | if ((section_len != store.baselen) || | |
1686 | memcmp(key, store.key, section_len+1)) { | |
1687 | store.state = SECTION_END_SEEN; | |
1688 | break; | |
1689 | } | |
1690 | ||
1691 | /* | |
1692 | * Do not increment matches: this is no match, but we | |
1693 | * just made sure we are in the desired section. | |
1694 | */ | |
1695 | ALLOC_GROW(store.offset, store.seen + 1, | |
1696 | store.offset_alloc); | |
1697 | store.offset[store.seen] = cf->do_ftell(cf); | |
1698 | /* fallthru */ | |
1699 | case SECTION_END_SEEN: | |
1700 | case START: | |
1701 | if (matches(key, value)) { | |
1702 | ALLOC_GROW(store.offset, store.seen + 1, | |
1703 | store.offset_alloc); | |
1704 | store.offset[store.seen] = cf->do_ftell(cf); | |
1705 | store.state = KEY_SEEN; | |
1706 | store.seen++; | |
1707 | } else { | |
1708 | if (strrchr(key, '.') - key == store.baselen && | |
1709 | !strncmp(key, store.key, store.baselen)) { | |
1710 | store.state = SECTION_SEEN; | |
1711 | ALLOC_GROW(store.offset, | |
1712 | store.seen + 1, | |
1713 | store.offset_alloc); | |
1714 | store.offset[store.seen] = cf->do_ftell(cf); | |
1715 | } | |
1716 | } | |
1717 | } | |
1718 | return 0; | |
1719 | } | |
1720 | ||
1721 | static int write_error(const char *filename) | |
1722 | { | |
1723 | error("failed to write new configuration file %s", filename); | |
1724 | ||
1725 | /* Same error code as "failed to rename". */ | |
1726 | return 4; | |
1727 | } | |
1728 | ||
1729 | static int store_write_section(int fd, const char *key) | |
1730 | { | |
1731 | const char *dot; | |
1732 | int i, success; | |
1733 | struct strbuf sb = STRBUF_INIT; | |
1734 | ||
1735 | dot = memchr(key, '.', store.baselen); | |
1736 | if (dot) { | |
1737 | strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key); | |
1738 | for (i = dot - key + 1; i < store.baselen; i++) { | |
1739 | if (key[i] == '"' || key[i] == '\\') | |
1740 | strbuf_addch(&sb, '\\'); | |
1741 | strbuf_addch(&sb, key[i]); | |
1742 | } | |
1743 | strbuf_addstr(&sb, "\"]\n"); | |
1744 | } else { | |
1745 | strbuf_addf(&sb, "[%.*s]\n", store.baselen, key); | |
1746 | } | |
1747 | ||
1748 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; | |
1749 | strbuf_release(&sb); | |
1750 | ||
1751 | return success; | |
1752 | } | |
1753 | ||
1754 | static int store_write_pair(int fd, const char *key, const char *value) | |
1755 | { | |
1756 | int i, success; | |
1757 | int length = strlen(key + store.baselen + 1); | |
1758 | const char *quote = ""; | |
1759 | struct strbuf sb = STRBUF_INIT; | |
1760 | ||
1761 | /* | |
1762 | * Check to see if the value needs to be surrounded with a dq pair. | |
1763 | * Note that problematic characters are always backslash-quoted; this | |
1764 | * check is about not losing leading or trailing SP and strings that | |
1765 | * follow beginning-of-comment characters (i.e. ';' and '#') by the | |
1766 | * configuration parser. | |
1767 | */ | |
1768 | if (value[0] == ' ') | |
1769 | quote = "\""; | |
1770 | for (i = 0; value[i]; i++) | |
1771 | if (value[i] == ';' || value[i] == '#') | |
1772 | quote = "\""; | |
1773 | if (i && value[i - 1] == ' ') | |
1774 | quote = "\""; | |
1775 | ||
1776 | strbuf_addf(&sb, "\t%.*s = %s", | |
1777 | length, key + store.baselen + 1, quote); | |
1778 | ||
1779 | for (i = 0; value[i]; i++) | |
1780 | switch (value[i]) { | |
1781 | case '\n': | |
1782 | strbuf_addstr(&sb, "\\n"); | |
1783 | break; | |
1784 | case '\t': | |
1785 | strbuf_addstr(&sb, "\\t"); | |
1786 | break; | |
1787 | case '"': | |
1788 | case '\\': | |
1789 | strbuf_addch(&sb, '\\'); | |
1790 | default: | |
1791 | strbuf_addch(&sb, value[i]); | |
1792 | break; | |
1793 | } | |
1794 | strbuf_addf(&sb, "%s\n", quote); | |
1795 | ||
1796 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; | |
1797 | strbuf_release(&sb); | |
1798 | ||
1799 | return success; | |
1800 | } | |
1801 | ||
1802 | static ssize_t find_beginning_of_line(const char *contents, size_t size, | |
1803 | size_t offset_, int *found_bracket) | |
1804 | { | |
1805 | size_t equal_offset = size, bracket_offset = size; | |
1806 | ssize_t offset; | |
1807 | ||
1808 | contline: | |
1809 | for (offset = offset_-2; offset > 0 | |
1810 | && contents[offset] != '\n'; offset--) | |
1811 | switch (contents[offset]) { | |
1812 | case '=': equal_offset = offset; break; | |
1813 | case ']': bracket_offset = offset; break; | |
1814 | } | |
1815 | if (offset > 0 && contents[offset-1] == '\\') { | |
1816 | offset_ = offset; | |
1817 | goto contline; | |
1818 | } | |
1819 | if (bracket_offset < equal_offset) { | |
1820 | *found_bracket = 1; | |
1821 | offset = bracket_offset+1; | |
1822 | } else | |
1823 | offset++; | |
1824 | ||
1825 | return offset; | |
1826 | } | |
1827 | ||
1828 | int git_config_set_in_file(const char *config_filename, | |
1829 | const char *key, const char *value) | |
1830 | { | |
1831 | return git_config_set_multivar_in_file(config_filename, key, value, NULL, 0); | |
1832 | } | |
1833 | ||
1834 | int git_config_set(const char *key, const char *value) | |
1835 | { | |
1836 | return git_config_set_multivar(key, value, NULL, 0); | |
1837 | } | |
1838 | ||
1839 | /* | |
1840 | * Auxiliary function to sanity-check and split the key into the section | |
1841 | * identifier and variable name. | |
1842 | * | |
1843 | * Returns 0 on success, -1 when there is an invalid character in the key and | |
1844 | * -2 if there is no section name in the key. | |
1845 | * | |
1846 | * store_key - pointer to char* which will hold a copy of the key with | |
1847 | * lowercase section and variable name | |
1848 | * baselen - pointer to int which will hold the length of the | |
1849 | * section + subsection part, can be NULL | |
1850 | */ | |
1851 | int git_config_parse_key(const char *key, char **store_key, int *baselen_) | |
1852 | { | |
1853 | int i, dot, baselen; | |
1854 | const char *last_dot = strrchr(key, '.'); | |
1855 | ||
1856 | /* | |
1857 | * Since "key" actually contains the section name and the real | |
1858 | * key name separated by a dot, we have to know where the dot is. | |
1859 | */ | |
1860 | ||
1861 | if (last_dot == NULL || last_dot == key) { | |
1862 | error("key does not contain a section: %s", key); | |
1863 | return -CONFIG_NO_SECTION_OR_NAME; | |
1864 | } | |
1865 | ||
1866 | if (!last_dot[1]) { | |
1867 | error("key does not contain variable name: %s", key); | |
1868 | return -CONFIG_NO_SECTION_OR_NAME; | |
1869 | } | |
1870 | ||
1871 | baselen = last_dot - key; | |
1872 | if (baselen_) | |
1873 | *baselen_ = baselen; | |
1874 | ||
1875 | /* | |
1876 | * Validate the key and while at it, lower case it for matching. | |
1877 | */ | |
1878 | *store_key = xmalloc(strlen(key) + 1); | |
1879 | ||
1880 | dot = 0; | |
1881 | for (i = 0; key[i]; i++) { | |
1882 | unsigned char c = key[i]; | |
1883 | if (c == '.') | |
1884 | dot = 1; | |
1885 | /* Leave the extended basename untouched.. */ | |
1886 | if (!dot || i > baselen) { | |
1887 | if (!iskeychar(c) || | |
1888 | (i == baselen + 1 && !isalpha(c))) { | |
1889 | error("invalid key: %s", key); | |
1890 | goto out_free_ret_1; | |
1891 | } | |
1892 | c = tolower(c); | |
1893 | } else if (c == '\n') { | |
1894 | error("invalid key (newline): %s", key); | |
1895 | goto out_free_ret_1; | |
1896 | } | |
1897 | (*store_key)[i] = c; | |
1898 | } | |
1899 | (*store_key)[i] = 0; | |
1900 | ||
1901 | return 0; | |
1902 | ||
1903 | out_free_ret_1: | |
1904 | free(*store_key); | |
1905 | *store_key = NULL; | |
1906 | return -CONFIG_INVALID_KEY; | |
1907 | } | |
1908 | ||
1909 | /* | |
1910 | * If value==NULL, unset in (remove from) config, | |
1911 | * if value_regex!=NULL, disregard key/value pairs where value does not match. | |
1912 | * if value_regex==CONFIG_REGEX_NONE, do not match any existing values | |
1913 | * (only add a new one) | |
1914 | * if multi_replace==0, nothing, or only one matching key/value is replaced, | |
1915 | * else all matching key/values (regardless how many) are removed, | |
1916 | * before the new pair is written. | |
1917 | * | |
1918 | * Returns 0 on success. | |
1919 | * | |
1920 | * This function does this: | |
1921 | * | |
1922 | * - it locks the config file by creating ".git/config.lock" | |
1923 | * | |
1924 | * - it then parses the config using store_aux() as validator to find | |
1925 | * the position on the key/value pair to replace. If it is to be unset, | |
1926 | * it must be found exactly once. | |
1927 | * | |
1928 | * - the config file is mmap()ed and the part before the match (if any) is | |
1929 | * written to the lock file, then the changed part and the rest. | |
1930 | * | |
1931 | * - the config file is removed and the lock file rename()d to it. | |
1932 | * | |
1933 | */ | |
1934 | int git_config_set_multivar_in_file(const char *config_filename, | |
1935 | const char *key, const char *value, | |
1936 | const char *value_regex, int multi_replace) | |
1937 | { | |
1938 | int fd = -1, in_fd; | |
1939 | int ret; | |
1940 | struct lock_file *lock = NULL; | |
1941 | char *filename_buf = NULL; | |
1942 | char *contents = NULL; | |
1943 | size_t contents_sz; | |
1944 | ||
1945 | /* parse-key returns negative; flip the sign to feed exit(3) */ | |
1946 | ret = 0 - git_config_parse_key(key, &store.key, &store.baselen); | |
1947 | if (ret) | |
1948 | goto out_free; | |
1949 | ||
1950 | store.multi_replace = multi_replace; | |
1951 | ||
1952 | if (!config_filename) | |
1953 | config_filename = filename_buf = git_pathdup("config"); | |
1954 | ||
1955 | /* | |
1956 | * The lock serves a purpose in addition to locking: the new | |
1957 | * contents of .git/config will be written into it. | |
1958 | */ | |
1959 | lock = xcalloc(1, sizeof(struct lock_file)); | |
1960 | fd = hold_lock_file_for_update(lock, config_filename, 0); | |
1961 | if (fd < 0) { | |
1962 | error("could not lock config file %s: %s", config_filename, strerror(errno)); | |
1963 | free(store.key); | |
1964 | ret = CONFIG_NO_LOCK; | |
1965 | goto out_free; | |
1966 | } | |
1967 | ||
1968 | /* | |
1969 | * If .git/config does not exist yet, write a minimal version. | |
1970 | */ | |
1971 | in_fd = open(config_filename, O_RDONLY); | |
1972 | if ( in_fd < 0 ) { | |
1973 | free(store.key); | |
1974 | ||
1975 | if ( ENOENT != errno ) { | |
1976 | error("opening %s: %s", config_filename, | |
1977 | strerror(errno)); | |
1978 | ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */ | |
1979 | goto out_free; | |
1980 | } | |
1981 | /* if nothing to unset, error out */ | |
1982 | if (value == NULL) { | |
1983 | ret = CONFIG_NOTHING_SET; | |
1984 | goto out_free; | |
1985 | } | |
1986 | ||
1987 | store.key = (char *)key; | |
1988 | if (!store_write_section(fd, key) || | |
1989 | !store_write_pair(fd, key, value)) | |
1990 | goto write_err_out; | |
1991 | } else { | |
1992 | struct stat st; | |
1993 | size_t copy_begin, copy_end; | |
1994 | int i, new_line = 0; | |
1995 | ||
1996 | if (value_regex == NULL) | |
1997 | store.value_regex = NULL; | |
1998 | else if (value_regex == CONFIG_REGEX_NONE) | |
1999 | store.value_regex = CONFIG_REGEX_NONE; | |
2000 | else { | |
2001 | if (value_regex[0] == '!') { | |
2002 | store.do_not_match = 1; | |
2003 | value_regex++; | |
2004 | } else | |
2005 | store.do_not_match = 0; | |
2006 | ||
2007 | store.value_regex = (regex_t*)xmalloc(sizeof(regex_t)); | |
2008 | if (regcomp(store.value_regex, value_regex, | |
2009 | REG_EXTENDED)) { | |
2010 | error("invalid pattern: %s", value_regex); | |
2011 | free(store.value_regex); | |
2012 | ret = CONFIG_INVALID_PATTERN; | |
2013 | goto out_free; | |
2014 | } | |
2015 | } | |
2016 | ||
2017 | ALLOC_GROW(store.offset, 1, store.offset_alloc); | |
2018 | store.offset[0] = 0; | |
2019 | store.state = START; | |
2020 | store.seen = 0; | |
2021 | ||
2022 | /* | |
2023 | * After this, store.offset will contain the *end* offset | |
2024 | * of the last match, or remain at 0 if no match was found. | |
2025 | * As a side effect, we make sure to transform only a valid | |
2026 | * existing config file. | |
2027 | */ | |
2028 | if (git_config_from_file(store_aux, config_filename, NULL)) { | |
2029 | error("invalid config file %s", config_filename); | |
2030 | free(store.key); | |
2031 | if (store.value_regex != NULL && | |
2032 | store.value_regex != CONFIG_REGEX_NONE) { | |
2033 | regfree(store.value_regex); | |
2034 | free(store.value_regex); | |
2035 | } | |
2036 | ret = CONFIG_INVALID_FILE; | |
2037 | goto out_free; | |
2038 | } | |
2039 | ||
2040 | free(store.key); | |
2041 | if (store.value_regex != NULL && | |
2042 | store.value_regex != CONFIG_REGEX_NONE) { | |
2043 | regfree(store.value_regex); | |
2044 | free(store.value_regex); | |
2045 | } | |
2046 | ||
2047 | /* if nothing to unset, or too many matches, error out */ | |
2048 | if ((store.seen == 0 && value == NULL) || | |
2049 | (store.seen > 1 && multi_replace == 0)) { | |
2050 | ret = CONFIG_NOTHING_SET; | |
2051 | goto out_free; | |
2052 | } | |
2053 | ||
2054 | fstat(in_fd, &st); | |
2055 | contents_sz = xsize_t(st.st_size); | |
2056 | contents = xmmap_gently(NULL, contents_sz, PROT_READ, | |
2057 | MAP_PRIVATE, in_fd, 0); | |
2058 | if (contents == MAP_FAILED) { | |
2059 | if (errno == ENODEV && S_ISDIR(st.st_mode)) | |
2060 | errno = EISDIR; | |
2061 | error("unable to mmap '%s': %s", | |
2062 | config_filename, strerror(errno)); | |
2063 | ret = CONFIG_INVALID_FILE; | |
2064 | contents = NULL; | |
2065 | goto out_free; | |
2066 | } | |
2067 | close(in_fd); | |
2068 | ||
2069 | if (chmod(lock->filename.buf, st.st_mode & 07777) < 0) { | |
2070 | error("chmod on %s failed: %s", | |
2071 | lock->filename.buf, strerror(errno)); | |
2072 | ret = CONFIG_NO_WRITE; | |
2073 | goto out_free; | |
2074 | } | |
2075 | ||
2076 | if (store.seen == 0) | |
2077 | store.seen = 1; | |
2078 | ||
2079 | for (i = 0, copy_begin = 0; i < store.seen; i++) { | |
2080 | if (store.offset[i] == 0) { | |
2081 | store.offset[i] = copy_end = contents_sz; | |
2082 | } else if (store.state != KEY_SEEN) { | |
2083 | copy_end = store.offset[i]; | |
2084 | } else | |
2085 | copy_end = find_beginning_of_line( | |
2086 | contents, contents_sz, | |
2087 | store.offset[i]-2, &new_line); | |
2088 | ||
2089 | if (copy_end > 0 && contents[copy_end-1] != '\n') | |
2090 | new_line = 1; | |
2091 | ||
2092 | /* write the first part of the config */ | |
2093 | if (copy_end > copy_begin) { | |
2094 | if (write_in_full(fd, contents + copy_begin, | |
2095 | copy_end - copy_begin) < | |
2096 | copy_end - copy_begin) | |
2097 | goto write_err_out; | |
2098 | if (new_line && | |
2099 | write_str_in_full(fd, "\n") != 1) | |
2100 | goto write_err_out; | |
2101 | } | |
2102 | copy_begin = store.offset[i]; | |
2103 | } | |
2104 | ||
2105 | /* write the pair (value == NULL means unset) */ | |
2106 | if (value != NULL) { | |
2107 | if (store.state == START) { | |
2108 | if (!store_write_section(fd, key)) | |
2109 | goto write_err_out; | |
2110 | } | |
2111 | if (!store_write_pair(fd, key, value)) | |
2112 | goto write_err_out; | |
2113 | } | |
2114 | ||
2115 | /* write the rest of the config */ | |
2116 | if (copy_begin < contents_sz) | |
2117 | if (write_in_full(fd, contents + copy_begin, | |
2118 | contents_sz - copy_begin) < | |
2119 | contents_sz - copy_begin) | |
2120 | goto write_err_out; | |
2121 | ||
2122 | munmap(contents, contents_sz); | |
2123 | contents = NULL; | |
2124 | } | |
2125 | ||
2126 | if (commit_lock_file(lock) < 0) { | |
2127 | error("could not commit config file %s", config_filename); | |
2128 | ret = CONFIG_NO_WRITE; | |
2129 | lock = NULL; | |
2130 | goto out_free; | |
2131 | } | |
2132 | ||
2133 | /* | |
2134 | * lock is committed, so don't try to roll it back below. | |
2135 | * NOTE: Since lockfile.c keeps a linked list of all created | |
2136 | * lock_file structures, it isn't safe to free(lock). It's | |
2137 | * better to just leave it hanging around. | |
2138 | */ | |
2139 | lock = NULL; | |
2140 | ret = 0; | |
2141 | ||
2142 | /* Invalidate the config cache */ | |
2143 | git_config_clear(); | |
2144 | ||
2145 | out_free: | |
2146 | if (lock) | |
2147 | rollback_lock_file(lock); | |
2148 | free(filename_buf); | |
2149 | if (contents) | |
2150 | munmap(contents, contents_sz); | |
2151 | return ret; | |
2152 | ||
2153 | write_err_out: | |
2154 | ret = write_error(lock->filename.buf); | |
2155 | goto out_free; | |
2156 | ||
2157 | } | |
2158 | ||
2159 | int git_config_set_multivar(const char *key, const char *value, | |
2160 | const char *value_regex, int multi_replace) | |
2161 | { | |
2162 | return git_config_set_multivar_in_file(NULL, key, value, value_regex, | |
2163 | multi_replace); | |
2164 | } | |
2165 | ||
2166 | static int section_name_match (const char *buf, const char *name) | |
2167 | { | |
2168 | int i = 0, j = 0, dot = 0; | |
2169 | if (buf[i] != '[') | |
2170 | return 0; | |
2171 | for (i = 1; buf[i] && buf[i] != ']'; i++) { | |
2172 | if (!dot && isspace(buf[i])) { | |
2173 | dot = 1; | |
2174 | if (name[j++] != '.') | |
2175 | break; | |
2176 | for (i++; isspace(buf[i]); i++) | |
2177 | ; /* do nothing */ | |
2178 | if (buf[i] != '"') | |
2179 | break; | |
2180 | continue; | |
2181 | } | |
2182 | if (buf[i] == '\\' && dot) | |
2183 | i++; | |
2184 | else if (buf[i] == '"' && dot) { | |
2185 | for (i++; isspace(buf[i]); i++) | |
2186 | ; /* do_nothing */ | |
2187 | break; | |
2188 | } | |
2189 | if (buf[i] != name[j++]) | |
2190 | break; | |
2191 | } | |
2192 | if (buf[i] == ']' && name[j] == 0) { | |
2193 | /* | |
2194 | * We match, now just find the right length offset by | |
2195 | * gobbling up any whitespace after it, as well | |
2196 | */ | |
2197 | i++; | |
2198 | for (; buf[i] && isspace(buf[i]); i++) | |
2199 | ; /* do nothing */ | |
2200 | return i; | |
2201 | } | |
2202 | return 0; | |
2203 | } | |
2204 | ||
2205 | static int section_name_is_ok(const char *name) | |
2206 | { | |
2207 | /* Empty section names are bogus. */ | |
2208 | if (!*name) | |
2209 | return 0; | |
2210 | ||
2211 | /* | |
2212 | * Before a dot, we must be alphanumeric or dash. After the first dot, | |
2213 | * anything goes, so we can stop checking. | |
2214 | */ | |
2215 | for (; *name && *name != '.'; name++) | |
2216 | if (*name != '-' && !isalnum(*name)) | |
2217 | return 0; | |
2218 | return 1; | |
2219 | } | |
2220 | ||
2221 | /* if new_name == NULL, the section is removed instead */ | |
2222 | int git_config_rename_section_in_file(const char *config_filename, | |
2223 | const char *old_name, const char *new_name) | |
2224 | { | |
2225 | int ret = 0, remove = 0; | |
2226 | char *filename_buf = NULL; | |
2227 | struct lock_file *lock; | |
2228 | int out_fd; | |
2229 | char buf[1024]; | |
2230 | FILE *config_file; | |
2231 | struct stat st; | |
2232 | ||
2233 | if (new_name && !section_name_is_ok(new_name)) { | |
2234 | ret = error("invalid section name: %s", new_name); | |
2235 | goto out; | |
2236 | } | |
2237 | ||
2238 | if (!config_filename) | |
2239 | config_filename = filename_buf = git_pathdup("config"); | |
2240 | ||
2241 | lock = xcalloc(1, sizeof(struct lock_file)); | |
2242 | out_fd = hold_lock_file_for_update(lock, config_filename, 0); | |
2243 | if (out_fd < 0) { | |
2244 | ret = error("could not lock config file %s", config_filename); | |
2245 | goto out; | |
2246 | } | |
2247 | ||
2248 | if (!(config_file = fopen(config_filename, "rb"))) { | |
2249 | /* no config file means nothing to rename, no error */ | |
2250 | goto unlock_and_out; | |
2251 | } | |
2252 | ||
2253 | fstat(fileno(config_file), &st); | |
2254 | ||
2255 | if (chmod(lock->filename.buf, st.st_mode & 07777) < 0) { | |
2256 | ret = error("chmod on %s failed: %s", | |
2257 | lock->filename.buf, strerror(errno)); | |
2258 | goto out; | |
2259 | } | |
2260 | ||
2261 | while (fgets(buf, sizeof(buf), config_file)) { | |
2262 | int i; | |
2263 | int length; | |
2264 | char *output = buf; | |
2265 | for (i = 0; buf[i] && isspace(buf[i]); i++) | |
2266 | ; /* do nothing */ | |
2267 | if (buf[i] == '[') { | |
2268 | /* it's a section */ | |
2269 | int offset = section_name_match(&buf[i], old_name); | |
2270 | if (offset > 0) { | |
2271 | ret++; | |
2272 | if (new_name == NULL) { | |
2273 | remove = 1; | |
2274 | continue; | |
2275 | } | |
2276 | store.baselen = strlen(new_name); | |
2277 | if (!store_write_section(out_fd, new_name)) { | |
2278 | ret = write_error(lock->filename.buf); | |
2279 | goto out; | |
2280 | } | |
2281 | /* | |
2282 | * We wrote out the new section, with | |
2283 | * a newline, now skip the old | |
2284 | * section's length | |
2285 | */ | |
2286 | output += offset + i; | |
2287 | if (strlen(output) > 0) { | |
2288 | /* | |
2289 | * More content means there's | |
2290 | * a declaration to put on the | |
2291 | * next line; indent with a | |
2292 | * tab | |
2293 | */ | |
2294 | output -= 1; | |
2295 | output[0] = '\t'; | |
2296 | } | |
2297 | } | |
2298 | remove = 0; | |
2299 | } | |
2300 | if (remove) | |
2301 | continue; | |
2302 | length = strlen(output); | |
2303 | if (write_in_full(out_fd, output, length) != length) { | |
2304 | ret = write_error(lock->filename.buf); | |
2305 | goto out; | |
2306 | } | |
2307 | } | |
2308 | fclose(config_file); | |
2309 | unlock_and_out: | |
2310 | if (commit_lock_file(lock) < 0) | |
2311 | ret = error("could not commit config file %s", config_filename); | |
2312 | out: | |
2313 | free(filename_buf); | |
2314 | return ret; | |
2315 | } | |
2316 | ||
2317 | int git_config_rename_section(const char *old_name, const char *new_name) | |
2318 | { | |
2319 | return git_config_rename_section_in_file(NULL, old_name, new_name); | |
2320 | } | |
2321 | ||
2322 | /* | |
2323 | * Call this to report error for your variable that should not | |
2324 | * get a boolean value (i.e. "[my] var" means "true"). | |
2325 | */ | |
2326 | #undef config_error_nonbool | |
2327 | int config_error_nonbool(const char *var) | |
2328 | { | |
2329 | return error("Missing value for '%s'", var); | |
2330 | } | |
2331 | ||
2332 | int parse_config_key(const char *var, | |
2333 | const char *section, | |
2334 | const char **subsection, int *subsection_len, | |
2335 | const char **key) | |
2336 | { | |
2337 | int section_len = strlen(section); | |
2338 | const char *dot; | |
2339 | ||
2340 | /* Does it start with "section." ? */ | |
2341 | if (!starts_with(var, section) || var[section_len] != '.') | |
2342 | return -1; | |
2343 | ||
2344 | /* | |
2345 | * Find the key; we don't know yet if we have a subsection, but we must | |
2346 | * parse backwards from the end, since the subsection may have dots in | |
2347 | * it, too. | |
2348 | */ | |
2349 | dot = strrchr(var, '.'); | |
2350 | *key = dot + 1; | |
2351 | ||
2352 | /* Did we have a subsection at all? */ | |
2353 | if (dot == var + section_len) { | |
2354 | *subsection = NULL; | |
2355 | *subsection_len = 0; | |
2356 | } | |
2357 | else { | |
2358 | *subsection = var + section_len + 1; | |
2359 | *subsection_len = dot - *subsection; | |
2360 | } | |
2361 | ||
2362 | return 0; | |
2363 | } |