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