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