Merge branches 'lt/crlf' and 'jc/apply-config'
[git/git.git] / config.c
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
10 #define MAXNAME (256)
11
12 static FILE *config_file;
13 static const char *config_file_name;
14 static int config_linenr;
15 static int get_next_char(void)
16 {
17 int c;
18 FILE *f;
19
20 c = '\n';
21 if ((f = config_file) != NULL) {
22 c = fgetc(f);
23 if (c == '\r') {
24 /* DOS like systems */
25 c = fgetc(f);
26 if (c != '\n') {
27 ungetc(c, f);
28 c = '\r';
29 }
30 }
31 if (c == '\n')
32 config_linenr++;
33 if (c == EOF) {
34 config_file = NULL;
35 c = '\n';
36 }
37 }
38 return c;
39 }
40
41 static char *parse_value(void)
42 {
43 static char value[1024];
44 int quote = 0, comment = 0, len = 0, space = 0;
45
46 for (;;) {
47 int c = get_next_char();
48 if (len >= sizeof(value))
49 return NULL;
50 if (c == '\n') {
51 if (quote)
52 return NULL;
53 value[len] = 0;
54 return value;
55 }
56 if (comment)
57 continue;
58 if (isspace(c) && !quote) {
59 space = 1;
60 continue;
61 }
62 if (!quote) {
63 if (c == ';' || c == '#') {
64 comment = 1;
65 continue;
66 }
67 }
68 if (space) {
69 if (len)
70 value[len++] = ' ';
71 space = 0;
72 }
73 if (c == '\\') {
74 c = get_next_char();
75 switch (c) {
76 case '\n':
77 continue;
78 case 't':
79 c = '\t';
80 break;
81 case 'b':
82 c = '\b';
83 break;
84 case 'n':
85 c = '\n';
86 break;
87 /* Some characters escape as themselves */
88 case '\\': case '"':
89 break;
90 /* Reject unknown escape sequences */
91 default:
92 return NULL;
93 }
94 value[len++] = c;
95 continue;
96 }
97 if (c == '"') {
98 quote = 1-quote;
99 continue;
100 }
101 value[len++] = c;
102 }
103 }
104
105 static inline int iskeychar(int c)
106 {
107 return isalnum(c) || c == '-';
108 }
109
110 static int get_value(config_fn_t fn, char *name, unsigned int len)
111 {
112 int c;
113 char *value;
114
115 /* Get the full name */
116 for (;;) {
117 c = get_next_char();
118 if (c == EOF)
119 break;
120 if (!iskeychar(c))
121 break;
122 name[len++] = tolower(c);
123 if (len >= MAXNAME)
124 return -1;
125 }
126 name[len] = 0;
127 while (c == ' ' || c == '\t')
128 c = get_next_char();
129
130 value = NULL;
131 if (c != '\n') {
132 if (c != '=')
133 return -1;
134 value = parse_value();
135 if (!value)
136 return -1;
137 }
138 return fn(name, value);
139 }
140
141 static int get_extended_base_var(char *name, int baselen, int c)
142 {
143 do {
144 if (c == '\n')
145 return -1;
146 c = get_next_char();
147 } while (isspace(c));
148
149 /* We require the format to be '[base "extension"]' */
150 if (c != '"')
151 return -1;
152 name[baselen++] = '.';
153
154 for (;;) {
155 int c = get_next_char();
156 if (c == '\n')
157 return -1;
158 if (c == '"')
159 break;
160 if (c == '\\') {
161 c = get_next_char();
162 if (c == '\n')
163 return -1;
164 }
165 name[baselen++] = c;
166 if (baselen > MAXNAME / 2)
167 return -1;
168 }
169
170 /* Final ']' */
171 if (get_next_char() != ']')
172 return -1;
173 return baselen;
174 }
175
176 static int get_base_var(char *name)
177 {
178 int baselen = 0;
179
180 for (;;) {
181 int c = get_next_char();
182 if (c == EOF)
183 return -1;
184 if (c == ']')
185 return baselen;
186 if (isspace(c))
187 return get_extended_base_var(name, baselen, c);
188 if (!iskeychar(c) && c != '.')
189 return -1;
190 if (baselen > MAXNAME / 2)
191 return -1;
192 name[baselen++] = tolower(c);
193 }
194 }
195
196 static int git_parse_file(config_fn_t fn)
197 {
198 int comment = 0;
199 int baselen = 0;
200 static char var[MAXNAME];
201
202 for (;;) {
203 int c = get_next_char();
204 if (c == '\n') {
205 /* EOF? */
206 if (!config_file)
207 return 0;
208 comment = 0;
209 continue;
210 }
211 if (comment || isspace(c))
212 continue;
213 if (c == '#' || c == ';') {
214 comment = 1;
215 continue;
216 }
217 if (c == '[') {
218 baselen = get_base_var(var);
219 if (baselen <= 0)
220 break;
221 var[baselen++] = '.';
222 var[baselen] = 0;
223 continue;
224 }
225 if (!isalpha(c))
226 break;
227 var[baselen] = tolower(c);
228 if (get_value(fn, var, baselen+1) < 0)
229 break;
230 }
231 die("bad config file line %d in %s", config_linenr, config_file_name);
232 }
233
234 int git_config_int(const char *name, const char *value)
235 {
236 if (value && *value) {
237 char *end;
238 int val = strtol(value, &end, 0);
239 if (!*end)
240 return val;
241 if (!strcasecmp(end, "k"))
242 return val * 1024;
243 if (!strcasecmp(end, "m"))
244 return val * 1024 * 1024;
245 if (!strcasecmp(end, "g"))
246 return val * 1024 * 1024 * 1024;
247 }
248 die("bad config value for '%s' in %s", name, config_file_name);
249 }
250
251 int git_config_bool(const char *name, const char *value)
252 {
253 if (!value)
254 return 1;
255 if (!*value)
256 return 0;
257 if (!strcasecmp(value, "true") || !strcasecmp(value, "yes"))
258 return 1;
259 if (!strcasecmp(value, "false") || !strcasecmp(value, "no"))
260 return 0;
261 return git_config_int(name, value) != 0;
262 }
263
264 int git_default_config(const char *var, const char *value)
265 {
266 /* This needs a better name */
267 if (!strcmp(var, "core.filemode")) {
268 trust_executable_bit = git_config_bool(var, value);
269 return 0;
270 }
271
272 if (!strcmp(var, "core.bare")) {
273 is_bare_repository_cfg = git_config_bool(var, value);
274 return 0;
275 }
276
277 if (!strcmp(var, "core.ignorestat")) {
278 assume_unchanged = git_config_bool(var, value);
279 return 0;
280 }
281
282 if (!strcmp(var, "core.prefersymlinkrefs")) {
283 prefer_symlink_refs = git_config_bool(var, value);
284 return 0;
285 }
286
287 if (!strcmp(var, "core.logallrefupdates")) {
288 log_all_ref_updates = git_config_bool(var, value);
289 return 0;
290 }
291
292 if (!strcmp(var, "core.warnambiguousrefs")) {
293 warn_ambiguous_refs = git_config_bool(var, value);
294 return 0;
295 }
296
297 if (!strcmp(var, "core.legacyheaders")) {
298 use_legacy_headers = git_config_bool(var, value);
299 return 0;
300 }
301
302 if (!strcmp(var, "core.compression")) {
303 int level = git_config_int(var, value);
304 if (level == -1)
305 level = Z_DEFAULT_COMPRESSION;
306 else if (level < 0 || level > Z_BEST_COMPRESSION)
307 die("bad zlib compression level %d", level);
308 zlib_compression_level = level;
309 return 0;
310 }
311
312 if (!strcmp(var, "core.packedgitwindowsize")) {
313 int pgsz_x2 = getpagesize() * 2;
314 packed_git_window_size = git_config_int(var, value);
315
316 /* This value must be multiple of (pagesize * 2) */
317 packed_git_window_size /= pgsz_x2;
318 if (packed_git_window_size < 1)
319 packed_git_window_size = 1;
320 packed_git_window_size *= pgsz_x2;
321 return 0;
322 }
323
324 if (!strcmp(var, "core.packedgitlimit")) {
325 packed_git_limit = git_config_int(var, value);
326 return 0;
327 }
328
329 if (!strcmp(var, "core.autocrlf")) {
330 if (value && !strcasecmp(value, "input")) {
331 auto_crlf = -1;
332 return 0;
333 }
334 auto_crlf = git_config_bool(var, value);
335 return 0;
336 }
337
338 if (!strcmp(var, "user.name")) {
339 strlcpy(git_default_name, value, sizeof(git_default_name));
340 return 0;
341 }
342
343 if (!strcmp(var, "user.email")) {
344 strlcpy(git_default_email, value, sizeof(git_default_email));
345 return 0;
346 }
347
348 if (!strcmp(var, "i18n.commitencoding")) {
349 git_commit_encoding = strdup(value);
350 return 0;
351 }
352
353 if (!strcmp(var, "i18n.logoutputencoding")) {
354 git_log_output_encoding = strdup(value);
355 return 0;
356 }
357
358
359 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
360 pager_use_color = git_config_bool(var,value);
361 return 0;
362 }
363
364 /* Add other config variables here and to Documentation/config.txt. */
365 return 0;
366 }
367
368 int git_config_from_file(config_fn_t fn, const char *filename)
369 {
370 int ret;
371 FILE *f = fopen(filename, "r");
372
373 ret = -1;
374 if (f) {
375 config_file = f;
376 config_file_name = filename;
377 config_linenr = 1;
378 ret = git_parse_file(fn);
379 fclose(f);
380 config_file_name = NULL;
381 }
382 return ret;
383 }
384
385 int git_config(config_fn_t fn)
386 {
387 int ret = 0;
388 char *repo_config = NULL;
389 const char *home = NULL, *filename;
390
391 /* $GIT_CONFIG makes git read _only_ the given config file,
392 * $GIT_CONFIG_LOCAL will make it process it in addition to the
393 * global config file, the same way it would the per-repository
394 * config file otherwise. */
395 filename = getenv(CONFIG_ENVIRONMENT);
396 if (!filename) {
397 home = getenv("HOME");
398 filename = getenv(CONFIG_LOCAL_ENVIRONMENT);
399 if (!filename)
400 filename = repo_config = xstrdup(git_path("config"));
401 }
402
403 if (home) {
404 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
405 if (!access(user_config, R_OK))
406 ret = git_config_from_file(fn, user_config);
407 free(user_config);
408 }
409
410 ret += git_config_from_file(fn, filename);
411 free(repo_config);
412 return ret;
413 }
414
415 /*
416 * Find all the stuff for git_config_set() below.
417 */
418
419 #define MAX_MATCHES 512
420
421 static struct {
422 int baselen;
423 char* key;
424 int do_not_match;
425 regex_t* value_regex;
426 int multi_replace;
427 off_t offset[MAX_MATCHES];
428 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
429 int seen;
430 } store;
431
432 static int matches(const char* key, const char* value)
433 {
434 return !strcmp(key, store.key) &&
435 (store.value_regex == NULL ||
436 (store.do_not_match ^
437 !regexec(store.value_regex, value, 0, NULL, 0)));
438 }
439
440 static int store_aux(const char* key, const char* value)
441 {
442 switch (store.state) {
443 case KEY_SEEN:
444 if (matches(key, value)) {
445 if (store.seen == 1 && store.multi_replace == 0) {
446 fprintf(stderr,
447 "Warning: %s has multiple values\n",
448 key);
449 } else if (store.seen >= MAX_MATCHES) {
450 fprintf(stderr, "Too many matches\n");
451 return 1;
452 }
453
454 store.offset[store.seen] = ftell(config_file);
455 store.seen++;
456 }
457 break;
458 case SECTION_SEEN:
459 if (strncmp(key, store.key, store.baselen+1)) {
460 store.state = SECTION_END_SEEN;
461 break;
462 } else
463 /* do not increment matches: this is no match */
464 store.offset[store.seen] = ftell(config_file);
465 /* fallthru */
466 case SECTION_END_SEEN:
467 case START:
468 if (matches(key, value)) {
469 store.offset[store.seen] = ftell(config_file);
470 store.state = KEY_SEEN;
471 store.seen++;
472 } else {
473 if (strrchr(key, '.') - key == store.baselen &&
474 !strncmp(key, store.key, store.baselen)) {
475 store.state = SECTION_SEEN;
476 store.offset[store.seen] = ftell(config_file);
477 }
478 }
479 }
480 return 0;
481 }
482
483 static int write_error()
484 {
485 fprintf(stderr, "Failed to write new configuration file\n");
486
487 /* Same error code as "failed to rename". */
488 return 4;
489 }
490
491 static int store_write_section(int fd, const char* key)
492 {
493 const char *dot = strchr(key, '.');
494 int len1 = store.baselen, len2 = -1;
495
496 dot = strchr(key, '.');
497 if (dot) {
498 int dotlen = dot - key;
499 if (dotlen < len1) {
500 len2 = len1 - dotlen - 1;
501 len1 = dotlen;
502 }
503 }
504
505 if (write_in_full(fd, "[", 1) != 1 ||
506 write_in_full(fd, key, len1) != len1)
507 return 0;
508 if (len2 >= 0) {
509 if (write_in_full(fd, " \"", 2) != 2)
510 return 0;
511 while (--len2 >= 0) {
512 unsigned char c = *++dot;
513 if (c == '"')
514 if (write_in_full(fd, "\\", 1) != 1)
515 return 0;
516 if (write_in_full(fd, &c, 1) != 1)
517 return 0;
518 }
519 if (write_in_full(fd, "\"", 1) != 1)
520 return 0;
521 }
522 if (write_in_full(fd, "]\n", 2) != 2)
523 return 0;
524
525 return 1;
526 }
527
528 static int store_write_pair(int fd, const char* key, const char* value)
529 {
530 int i;
531 int length = strlen(key+store.baselen+1);
532 int quote = 0;
533
534 /* Check to see if the value needs to be quoted. */
535 if (value[0] == ' ')
536 quote = 1;
537 for (i = 0; value[i]; i++)
538 if (value[i] == ';' || value[i] == '#')
539 quote = 1;
540 if (value[i-1] == ' ')
541 quote = 1;
542
543 if (write_in_full(fd, "\t", 1) != 1 ||
544 write_in_full(fd, key+store.baselen+1, length) != length ||
545 write_in_full(fd, " = ", 3) != 3)
546 return 0;
547 if (quote && write_in_full(fd, "\"", 1) != 1)
548 return 0;
549 for (i = 0; value[i]; i++)
550 switch (value[i]) {
551 case '\n':
552 if (write_in_full(fd, "\\n", 2) != 2)
553 return 0;
554 break;
555 case '\t':
556 if (write_in_full(fd, "\\t", 2) != 2)
557 return 0;
558 break;
559 case '"':
560 case '\\':
561 if (write_in_full(fd, "\\", 1) != 1)
562 return 0;
563 default:
564 if (write_in_full(fd, value+i, 1) != 1)
565 return 0;
566 break;
567 }
568 if (quote && write_in_full(fd, "\"", 1) != 1)
569 return 0;
570 if (write_in_full(fd, "\n", 1) != 1)
571 return 0;
572 return 1;
573 }
574
575 static int find_beginning_of_line(const char* contents, int size,
576 int offset_, int* found_bracket)
577 {
578 int equal_offset = size, bracket_offset = size;
579 int offset;
580
581 for (offset = offset_-2; offset > 0
582 && contents[offset] != '\n'; offset--)
583 switch (contents[offset]) {
584 case '=': equal_offset = offset; break;
585 case ']': bracket_offset = offset; break;
586 }
587 if (bracket_offset < equal_offset) {
588 *found_bracket = 1;
589 offset = bracket_offset+1;
590 } else
591 offset++;
592
593 return offset;
594 }
595
596 int git_config_set(const char* key, const char* value)
597 {
598 return git_config_set_multivar(key, value, NULL, 0);
599 }
600
601 /*
602 * If value==NULL, unset in (remove from) config,
603 * if value_regex!=NULL, disregard key/value pairs where value does not match.
604 * if multi_replace==0, nothing, or only one matching key/value is replaced,
605 * else all matching key/values (regardless how many) are removed,
606 * before the new pair is written.
607 *
608 * Returns 0 on success.
609 *
610 * This function does this:
611 *
612 * - it locks the config file by creating ".git/config.lock"
613 *
614 * - it then parses the config using store_aux() as validator to find
615 * the position on the key/value pair to replace. If it is to be unset,
616 * it must be found exactly once.
617 *
618 * - the config file is mmap()ed and the part before the match (if any) is
619 * written to the lock file, then the changed part and the rest.
620 *
621 * - the config file is removed and the lock file rename()d to it.
622 *
623 */
624 int git_config_set_multivar(const char* key, const char* value,
625 const char* value_regex, int multi_replace)
626 {
627 int i, dot;
628 int fd = -1, in_fd;
629 int ret;
630 char* config_filename;
631 char* lock_file;
632 const char* last_dot = strrchr(key, '.');
633
634 config_filename = getenv(CONFIG_ENVIRONMENT);
635 if (!config_filename) {
636 config_filename = getenv(CONFIG_LOCAL_ENVIRONMENT);
637 if (!config_filename)
638 config_filename = git_path("config");
639 }
640 config_filename = xstrdup(config_filename);
641 lock_file = xstrdup(mkpath("%s.lock", config_filename));
642
643 /*
644 * Since "key" actually contains the section name and the real
645 * key name separated by a dot, we have to know where the dot is.
646 */
647
648 if (last_dot == NULL) {
649 fprintf(stderr, "key does not contain a section: %s\n", key);
650 ret = 2;
651 goto out_free;
652 }
653 store.baselen = last_dot - key;
654
655 store.multi_replace = multi_replace;
656
657 /*
658 * Validate the key and while at it, lower case it for matching.
659 */
660 store.key = xmalloc(strlen(key) + 1);
661 dot = 0;
662 for (i = 0; key[i]; i++) {
663 unsigned char c = key[i];
664 if (c == '.')
665 dot = 1;
666 /* Leave the extended basename untouched.. */
667 if (!dot || i > store.baselen) {
668 if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) {
669 fprintf(stderr, "invalid key: %s\n", key);
670 free(store.key);
671 ret = 1;
672 goto out_free;
673 }
674 c = tolower(c);
675 } else if (c == '\n') {
676 fprintf(stderr, "invalid key (newline): %s\n", key);
677 free(store.key);
678 ret = 1;
679 goto out_free;
680 }
681 store.key[i] = c;
682 }
683 store.key[i] = 0;
684
685 /*
686 * The lock_file serves a purpose in addition to locking: the new
687 * contents of .git/config will be written into it.
688 */
689 fd = open(lock_file, O_WRONLY | O_CREAT | O_EXCL, 0666);
690 if (fd < 0 || adjust_shared_perm(lock_file)) {
691 fprintf(stderr, "could not lock config file\n");
692 free(store.key);
693 ret = -1;
694 goto out_free;
695 }
696
697 /*
698 * If .git/config does not exist yet, write a minimal version.
699 */
700 in_fd = open(config_filename, O_RDONLY);
701 if ( in_fd < 0 ) {
702 free(store.key);
703
704 if ( ENOENT != errno ) {
705 error("opening %s: %s", config_filename,
706 strerror(errno));
707 ret = 3; /* same as "invalid config file" */
708 goto out_free;
709 }
710 /* if nothing to unset, error out */
711 if (value == NULL) {
712 ret = 5;
713 goto out_free;
714 }
715
716 store.key = (char*)key;
717 if (!store_write_section(fd, key) ||
718 !store_write_pair(fd, key, value))
719 goto write_err_out;
720 } else {
721 struct stat st;
722 char* contents;
723 int i, copy_begin, copy_end, new_line = 0;
724
725 if (value_regex == NULL)
726 store.value_regex = NULL;
727 else {
728 if (value_regex[0] == '!') {
729 store.do_not_match = 1;
730 value_regex++;
731 } else
732 store.do_not_match = 0;
733
734 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
735 if (regcomp(store.value_regex, value_regex,
736 REG_EXTENDED)) {
737 fprintf(stderr, "Invalid pattern: %s\n",
738 value_regex);
739 free(store.value_regex);
740 ret = 6;
741 goto out_free;
742 }
743 }
744
745 store.offset[0] = 0;
746 store.state = START;
747 store.seen = 0;
748
749 /*
750 * After this, store.offset will contain the *end* offset
751 * of the last match, or remain at 0 if no match was found.
752 * As a side effect, we make sure to transform only a valid
753 * existing config file.
754 */
755 if (git_config_from_file(store_aux, config_filename)) {
756 fprintf(stderr, "invalid config file\n");
757 free(store.key);
758 if (store.value_regex != NULL) {
759 regfree(store.value_regex);
760 free(store.value_regex);
761 }
762 ret = 3;
763 goto out_free;
764 }
765
766 free(store.key);
767 if (store.value_regex != NULL) {
768 regfree(store.value_regex);
769 free(store.value_regex);
770 }
771
772 /* if nothing to unset, or too many matches, error out */
773 if ((store.seen == 0 && value == NULL) ||
774 (store.seen > 1 && multi_replace == 0)) {
775 ret = 5;
776 goto out_free;
777 }
778
779 fstat(in_fd, &st);
780 contents = xmmap(NULL, st.st_size, PROT_READ,
781 MAP_PRIVATE, in_fd, 0);
782 close(in_fd);
783
784 if (store.seen == 0)
785 store.seen = 1;
786
787 for (i = 0, copy_begin = 0; i < store.seen; i++) {
788 if (store.offset[i] == 0) {
789 store.offset[i] = copy_end = st.st_size;
790 } else if (store.state != KEY_SEEN) {
791 copy_end = store.offset[i];
792 } else
793 copy_end = find_beginning_of_line(
794 contents, st.st_size,
795 store.offset[i]-2, &new_line);
796
797 /* write the first part of the config */
798 if (copy_end > copy_begin) {
799 if (write_in_full(fd, contents + copy_begin,
800 copy_end - copy_begin) <
801 copy_end - copy_begin)
802 goto write_err_out;
803 if (new_line &&
804 write_in_full(fd, "\n", 1) != 1)
805 goto write_err_out;
806 }
807 copy_begin = store.offset[i];
808 }
809
810 /* write the pair (value == NULL means unset) */
811 if (value != NULL) {
812 if (store.state == START) {
813 if (!store_write_section(fd, key))
814 goto write_err_out;
815 }
816 if (!store_write_pair(fd, key, value))
817 goto write_err_out;
818 }
819
820 /* write the rest of the config */
821 if (copy_begin < st.st_size)
822 if (write_in_full(fd, contents + copy_begin,
823 st.st_size - copy_begin) <
824 st.st_size - copy_begin)
825 goto write_err_out;
826
827 munmap(contents, st.st_size);
828 unlink(config_filename);
829 }
830
831 if (rename(lock_file, config_filename) < 0) {
832 fprintf(stderr, "Could not rename the lock file?\n");
833 ret = 4;
834 goto out_free;
835 }
836
837 ret = 0;
838
839 out_free:
840 if (0 <= fd)
841 close(fd);
842 free(config_filename);
843 if (lock_file) {
844 unlink(lock_file);
845 free(lock_file);
846 }
847 return ret;
848
849 write_err_out:
850 ret = write_error();
851 goto out_free;
852
853 }
854
855 int git_config_rename_section(const char *old_name, const char *new_name)
856 {
857 int ret = 0;
858 char *config_filename;
859 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
860 int out_fd;
861 char buf[1024];
862
863 config_filename = getenv(CONFIG_ENVIRONMENT);
864 if (!config_filename) {
865 config_filename = getenv(CONFIG_LOCAL_ENVIRONMENT);
866 if (!config_filename)
867 config_filename = git_path("config");
868 }
869 config_filename = xstrdup(config_filename);
870 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
871 if (out_fd < 0) {
872 ret = error("Could not lock config file!");
873 goto out;
874 }
875
876 if (!(config_file = fopen(config_filename, "rb"))) {
877 ret = error("Could not open config file!");
878 goto out;
879 }
880
881 while (fgets(buf, sizeof(buf), config_file)) {
882 int i;
883 int length;
884 for (i = 0; buf[i] && isspace(buf[i]); i++)
885 ; /* do nothing */
886 if (buf[i] == '[') {
887 /* it's a section */
888 int j = 0, dot = 0;
889 for (i++; buf[i] && buf[i] != ']'; i++) {
890 if (!dot && isspace(buf[i])) {
891 dot = 1;
892 if (old_name[j++] != '.')
893 break;
894 for (i++; isspace(buf[i]); i++)
895 ; /* do nothing */
896 if (buf[i] != '"')
897 break;
898 continue;
899 }
900 if (buf[i] == '\\' && dot)
901 i++;
902 else if (buf[i] == '"' && dot) {
903 for (i++; isspace(buf[i]); i++)
904 ; /* do_nothing */
905 break;
906 }
907 if (buf[i] != old_name[j++])
908 break;
909 }
910 if (buf[i] == ']' && old_name[j] == 0) {
911 /* old_name matches */
912 ret++;
913 store.baselen = strlen(new_name);
914 if (!store_write_section(out_fd, new_name)) {
915 ret = write_error();
916 goto out;
917 }
918 continue;
919 }
920 }
921 length = strlen(buf);
922 if (write_in_full(out_fd, buf, length) != length) {
923 ret = write_error();
924 goto out;
925 }
926 }
927 fclose(config_file);
928 if (close(out_fd) || commit_lock_file(lock) < 0)
929 ret = error("Cannot commit config file!");
930 out:
931 free(config_filename);
932 return ret;
933 }
934