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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 | static FILE *config_file; | |
16 | static const char *config_file_name; | |
17 | static int config_linenr; | |
18 | static int config_file_eof; | |
19 | static int zlib_compression_seen; | |
20 | ||
21 | const char *config_exclusive_filename = NULL; | |
22 | ||
23 | struct config_item | |
24 | { | |
25 | struct config_item *next; | |
26 | char *name; | |
27 | char *value; | |
28 | }; | |
29 | static struct config_item *config_parameters; | |
30 | static struct config_item **config_parameters_tail = &config_parameters; | |
31 | ||
32 | static void lowercase(char *p) | |
33 | { | |
34 | for (; *p; p++) | |
35 | *p = tolower(*p); | |
36 | } | |
37 | ||
38 | void git_config_push_parameter(const char *text) | |
39 | { | |
40 | struct strbuf env = STRBUF_INIT; | |
41 | const char *old = getenv(CONFIG_DATA_ENVIRONMENT); | |
42 | if (old) { | |
43 | strbuf_addstr(&env, old); | |
44 | strbuf_addch(&env, ' '); | |
45 | } | |
46 | sq_quote_buf(&env, text); | |
47 | setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1); | |
48 | strbuf_release(&env); | |
49 | } | |
50 | ||
51 | int git_config_parse_parameter(const char *text) | |
52 | { | |
53 | struct config_item *ct; | |
54 | struct strbuf tmp = STRBUF_INIT; | |
55 | struct strbuf **pair; | |
56 | strbuf_addstr(&tmp, text); | |
57 | pair = strbuf_split(&tmp, '='); | |
58 | if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') | |
59 | strbuf_setlen(pair[0], pair[0]->len - 1); | |
60 | strbuf_trim(pair[0]); | |
61 | if (!pair[0]->len) { | |
62 | strbuf_list_free(pair); | |
63 | return -1; | |
64 | } | |
65 | ct = xcalloc(1, sizeof(struct config_item)); | |
66 | ct->name = strbuf_detach(pair[0], NULL); | |
67 | if (pair[1]) { | |
68 | strbuf_trim(pair[1]); | |
69 | ct->value = strbuf_detach(pair[1], NULL); | |
70 | } | |
71 | strbuf_list_free(pair); | |
72 | lowercase(ct->name); | |
73 | *config_parameters_tail = ct; | |
74 | config_parameters_tail = &ct->next; | |
75 | return 0; | |
76 | } | |
77 | ||
78 | int git_config_parse_environment(void) { | |
79 | const char *env = getenv(CONFIG_DATA_ENVIRONMENT); | |
80 | char *envw; | |
81 | const char **argv = NULL; | |
82 | int nr = 0, alloc = 0; | |
83 | int i; | |
84 | ||
85 | if (!env) | |
86 | return 0; | |
87 | /* sq_dequote will write over it */ | |
88 | envw = xstrdup(env); | |
89 | ||
90 | if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) { | |
91 | free(envw); | |
92 | return error("bogus format in " CONFIG_DATA_ENVIRONMENT); | |
93 | } | |
94 | ||
95 | for (i = 0; i < nr; i++) { | |
96 | if (git_config_parse_parameter(argv[i]) < 0) { | |
97 | error("bogus config parameter: %s", argv[i]); | |
98 | free(argv); | |
99 | free(envw); | |
100 | return -1; | |
101 | } | |
102 | } | |
103 | ||
104 | free(argv); | |
105 | free(envw); | |
106 | return 0; | |
107 | } | |
108 | ||
109 | static int get_next_char(void) | |
110 | { | |
111 | int c; | |
112 | FILE *f; | |
113 | ||
114 | c = '\n'; | |
115 | if ((f = config_file) != NULL) { | |
116 | c = fgetc(f); | |
117 | if (c == '\r') { | |
118 | /* DOS like systems */ | |
119 | c = fgetc(f); | |
120 | if (c != '\n') { | |
121 | ungetc(c, f); | |
122 | c = '\r'; | |
123 | } | |
124 | } | |
125 | if (c == '\n') | |
126 | config_linenr++; | |
127 | if (c == EOF) { | |
128 | config_file_eof = 1; | |
129 | c = '\n'; | |
130 | } | |
131 | } | |
132 | return c; | |
133 | } | |
134 | ||
135 | static char *parse_value(void) | |
136 | { | |
137 | static char value[1024]; | |
138 | int quote = 0, comment = 0, len = 0, space = 0; | |
139 | ||
140 | for (;;) { | |
141 | int c = get_next_char(); | |
142 | if (len >= sizeof(value) - 1) | |
143 | return NULL; | |
144 | if (c == '\n') { | |
145 | if (quote) | |
146 | return NULL; | |
147 | value[len] = 0; | |
148 | return value; | |
149 | } | |
150 | if (comment) | |
151 | continue; | |
152 | if (isspace(c) && !quote) { | |
153 | if (len) | |
154 | space++; | |
155 | continue; | |
156 | } | |
157 | if (!quote) { | |
158 | if (c == ';' || c == '#') { | |
159 | comment = 1; | |
160 | continue; | |
161 | } | |
162 | } | |
163 | for (; space; space--) | |
164 | value[len++] = ' '; | |
165 | if (c == '\\') { | |
166 | c = get_next_char(); | |
167 | switch (c) { | |
168 | case '\n': | |
169 | continue; | |
170 | case 't': | |
171 | c = '\t'; | |
172 | break; | |
173 | case 'b': | |
174 | c = '\b'; | |
175 | break; | |
176 | case 'n': | |
177 | c = '\n'; | |
178 | break; | |
179 | /* Some characters escape as themselves */ | |
180 | case '\\': case '"': | |
181 | break; | |
182 | /* Reject unknown escape sequences */ | |
183 | default: | |
184 | return NULL; | |
185 | } | |
186 | value[len++] = c; | |
187 | continue; | |
188 | } | |
189 | if (c == '"') { | |
190 | quote = 1-quote; | |
191 | continue; | |
192 | } | |
193 | value[len++] = c; | |
194 | } | |
195 | } | |
196 | ||
197 | static inline int iskeychar(int c) | |
198 | { | |
199 | return isalnum(c) || c == '-'; | |
200 | } | |
201 | ||
202 | static int get_value(config_fn_t fn, void *data, char *name, unsigned int len) | |
203 | { | |
204 | int c; | |
205 | char *value; | |
206 | ||
207 | /* Get the full name */ | |
208 | for (;;) { | |
209 | c = get_next_char(); | |
210 | if (config_file_eof) | |
211 | break; | |
212 | if (!iskeychar(c)) | |
213 | break; | |
214 | name[len++] = tolower(c); | |
215 | if (len >= MAXNAME) | |
216 | return -1; | |
217 | } | |
218 | name[len] = 0; | |
219 | while (c == ' ' || c == '\t') | |
220 | c = get_next_char(); | |
221 | ||
222 | value = NULL; | |
223 | if (c != '\n') { | |
224 | if (c != '=') | |
225 | return -1; | |
226 | value = parse_value(); | |
227 | if (!value) | |
228 | return -1; | |
229 | } | |
230 | return fn(name, value, data); | |
231 | } | |
232 | ||
233 | static int get_extended_base_var(char *name, int baselen, int c) | |
234 | { | |
235 | do { | |
236 | if (c == '\n') | |
237 | return -1; | |
238 | c = get_next_char(); | |
239 | } while (isspace(c)); | |
240 | ||
241 | /* We require the format to be '[base "extension"]' */ | |
242 | if (c != '"') | |
243 | return -1; | |
244 | name[baselen++] = '.'; | |
245 | ||
246 | for (;;) { | |
247 | int c = get_next_char(); | |
248 | if (c == '\n') | |
249 | return -1; | |
250 | if (c == '"') | |
251 | break; | |
252 | if (c == '\\') { | |
253 | c = get_next_char(); | |
254 | if (c == '\n') | |
255 | return -1; | |
256 | } | |
257 | name[baselen++] = c; | |
258 | if (baselen > MAXNAME / 2) | |
259 | return -1; | |
260 | } | |
261 | ||
262 | /* Final ']' */ | |
263 | if (get_next_char() != ']') | |
264 | return -1; | |
265 | return baselen; | |
266 | } | |
267 | ||
268 | static int get_base_var(char *name) | |
269 | { | |
270 | int baselen = 0; | |
271 | ||
272 | for (;;) { | |
273 | int c = get_next_char(); | |
274 | if (config_file_eof) | |
275 | return -1; | |
276 | if (c == ']') | |
277 | return baselen; | |
278 | if (isspace(c)) | |
279 | return get_extended_base_var(name, baselen, c); | |
280 | if (!iskeychar(c) && c != '.') | |
281 | return -1; | |
282 | if (baselen > MAXNAME / 2) | |
283 | return -1; | |
284 | name[baselen++] = tolower(c); | |
285 | } | |
286 | } | |
287 | ||
288 | static int git_parse_file(config_fn_t fn, void *data) | |
289 | { | |
290 | int comment = 0; | |
291 | int baselen = 0; | |
292 | static char var[MAXNAME]; | |
293 | ||
294 | /* U+FEFF Byte Order Mark in UTF8 */ | |
295 | static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf"; | |
296 | const unsigned char *bomptr = utf8_bom; | |
297 | ||
298 | for (;;) { | |
299 | int c = get_next_char(); | |
300 | if (bomptr && *bomptr) { | |
301 | /* We are at the file beginning; skip UTF8-encoded BOM | |
302 | * if present. Sane editors won't put this in on their | |
303 | * own, but e.g. Windows Notepad will do it happily. */ | |
304 | if ((unsigned char) c == *bomptr) { | |
305 | bomptr++; | |
306 | continue; | |
307 | } else { | |
308 | /* Do not tolerate partial BOM. */ | |
309 | if (bomptr != utf8_bom) | |
310 | break; | |
311 | /* No BOM at file beginning. Cool. */ | |
312 | bomptr = NULL; | |
313 | } | |
314 | } | |
315 | if (c == '\n') { | |
316 | if (config_file_eof) | |
317 | return 0; | |
318 | comment = 0; | |
319 | continue; | |
320 | } | |
321 | if (comment || isspace(c)) | |
322 | continue; | |
323 | if (c == '#' || c == ';') { | |
324 | comment = 1; | |
325 | continue; | |
326 | } | |
327 | if (c == '[') { | |
328 | baselen = get_base_var(var); | |
329 | if (baselen <= 0) | |
330 | break; | |
331 | var[baselen++] = '.'; | |
332 | var[baselen] = 0; | |
333 | continue; | |
334 | } | |
335 | if (!isalpha(c)) | |
336 | break; | |
337 | var[baselen] = tolower(c); | |
338 | if (get_value(fn, data, var, baselen+1) < 0) | |
339 | break; | |
340 | } | |
341 | die("bad config file line %d in %s", config_linenr, config_file_name); | |
342 | } | |
343 | ||
344 | static int parse_unit_factor(const char *end, unsigned long *val) | |
345 | { | |
346 | if (!*end) | |
347 | return 1; | |
348 | else if (!strcasecmp(end, "k")) { | |
349 | *val *= 1024; | |
350 | return 1; | |
351 | } | |
352 | else if (!strcasecmp(end, "m")) { | |
353 | *val *= 1024 * 1024; | |
354 | return 1; | |
355 | } | |
356 | else if (!strcasecmp(end, "g")) { | |
357 | *val *= 1024 * 1024 * 1024; | |
358 | return 1; | |
359 | } | |
360 | return 0; | |
361 | } | |
362 | ||
363 | static int git_parse_long(const char *value, long *ret) | |
364 | { | |
365 | if (value && *value) { | |
366 | char *end; | |
367 | long val = strtol(value, &end, 0); | |
368 | unsigned long factor = 1; | |
369 | if (!parse_unit_factor(end, &factor)) | |
370 | return 0; | |
371 | *ret = val * factor; | |
372 | return 1; | |
373 | } | |
374 | return 0; | |
375 | } | |
376 | ||
377 | int git_parse_ulong(const char *value, unsigned long *ret) | |
378 | { | |
379 | if (value && *value) { | |
380 | char *end; | |
381 | unsigned long val = strtoul(value, &end, 0); | |
382 | if (!parse_unit_factor(end, &val)) | |
383 | return 0; | |
384 | *ret = val; | |
385 | return 1; | |
386 | } | |
387 | return 0; | |
388 | } | |
389 | ||
390 | static void die_bad_config(const char *name) | |
391 | { | |
392 | if (config_file_name) | |
393 | die("bad config value for '%s' in %s", name, config_file_name); | |
394 | die("bad config value for '%s'", name); | |
395 | } | |
396 | ||
397 | int git_config_int(const char *name, const char *value) | |
398 | { | |
399 | long ret = 0; | |
400 | if (!git_parse_long(value, &ret)) | |
401 | die_bad_config(name); | |
402 | return ret; | |
403 | } | |
404 | ||
405 | unsigned long git_config_ulong(const char *name, const char *value) | |
406 | { | |
407 | unsigned long ret; | |
408 | if (!git_parse_ulong(value, &ret)) | |
409 | die_bad_config(name); | |
410 | return ret; | |
411 | } | |
412 | ||
413 | static int git_config_maybe_bool_text(const char *name, const char *value) | |
414 | { | |
415 | if (!value) | |
416 | return 1; | |
417 | if (!*value) | |
418 | return 0; | |
419 | if (!strcasecmp(value, "true") | |
420 | || !strcasecmp(value, "yes") | |
421 | || !strcasecmp(value, "on")) | |
422 | return 1; | |
423 | if (!strcasecmp(value, "false") | |
424 | || !strcasecmp(value, "no") | |
425 | || !strcasecmp(value, "off")) | |
426 | return 0; | |
427 | return -1; | |
428 | } | |
429 | ||
430 | int git_config_maybe_bool(const char *name, const char *value) | |
431 | { | |
432 | long v = git_config_maybe_bool_text(name, value); | |
433 | if (0 <= v) | |
434 | return v; | |
435 | if (git_parse_long(value, &v)) | |
436 | return !!v; | |
437 | return -1; | |
438 | } | |
439 | ||
440 | int git_config_bool_or_int(const char *name, const char *value, int *is_bool) | |
441 | { | |
442 | int v = git_config_maybe_bool_text(name, value); | |
443 | if (0 <= v) { | |
444 | *is_bool = 1; | |
445 | return v; | |
446 | } | |
447 | *is_bool = 0; | |
448 | return git_config_int(name, value); | |
449 | } | |
450 | ||
451 | int git_config_bool(const char *name, const char *value) | |
452 | { | |
453 | int discard; | |
454 | return !!git_config_bool_or_int(name, value, &discard); | |
455 | } | |
456 | ||
457 | int git_config_string(const char **dest, const char *var, const char *value) | |
458 | { | |
459 | if (!value) | |
460 | return config_error_nonbool(var); | |
461 | *dest = xstrdup(value); | |
462 | return 0; | |
463 | } | |
464 | ||
465 | int git_config_pathname(const char **dest, const char *var, const char *value) | |
466 | { | |
467 | if (!value) | |
468 | return config_error_nonbool(var); | |
469 | *dest = expand_user_path(value); | |
470 | if (!*dest) | |
471 | die("Failed to expand user dir in: '%s'", value); | |
472 | return 0; | |
473 | } | |
474 | ||
475 | static int git_default_core_config(const char *var, const char *value) | |
476 | { | |
477 | /* This needs a better name */ | |
478 | if (!strcmp(var, "core.filemode")) { | |
479 | trust_executable_bit = git_config_bool(var, value); | |
480 | return 0; | |
481 | } | |
482 | if (!strcmp(var, "core.trustctime")) { | |
483 | trust_ctime = git_config_bool(var, value); | |
484 | return 0; | |
485 | } | |
486 | ||
487 | if (!strcmp(var, "core.quotepath")) { | |
488 | quote_path_fully = git_config_bool(var, value); | |
489 | return 0; | |
490 | } | |
491 | ||
492 | if (!strcmp(var, "core.symlinks")) { | |
493 | has_symlinks = git_config_bool(var, value); | |
494 | return 0; | |
495 | } | |
496 | ||
497 | if (!strcmp(var, "core.ignorecase")) { | |
498 | ignore_case = git_config_bool(var, value); | |
499 | return 0; | |
500 | } | |
501 | ||
502 | if (!strcmp(var, "core.abbrevguard")) { | |
503 | unique_abbrev_extra_length = git_config_int(var, value); | |
504 | if (unique_abbrev_extra_length < 0) | |
505 | unique_abbrev_extra_length = 0; | |
506 | return 0; | |
507 | } | |
508 | ||
509 | if (!strcmp(var, "core.bare")) { | |
510 | is_bare_repository_cfg = git_config_bool(var, value); | |
511 | return 0; | |
512 | } | |
513 | ||
514 | if (!strcmp(var, "core.ignorestat")) { | |
515 | assume_unchanged = git_config_bool(var, value); | |
516 | return 0; | |
517 | } | |
518 | ||
519 | if (!strcmp(var, "core.prefersymlinkrefs")) { | |
520 | prefer_symlink_refs = git_config_bool(var, value); | |
521 | return 0; | |
522 | } | |
523 | ||
524 | if (!strcmp(var, "core.logallrefupdates")) { | |
525 | log_all_ref_updates = git_config_bool(var, value); | |
526 | return 0; | |
527 | } | |
528 | ||
529 | if (!strcmp(var, "core.warnambiguousrefs")) { | |
530 | warn_ambiguous_refs = git_config_bool(var, value); | |
531 | return 0; | |
532 | } | |
533 | ||
534 | if (!strcmp(var, "core.loosecompression")) { | |
535 | int level = git_config_int(var, value); | |
536 | if (level == -1) | |
537 | level = Z_DEFAULT_COMPRESSION; | |
538 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
539 | die("bad zlib compression level %d", level); | |
540 | zlib_compression_level = level; | |
541 | zlib_compression_seen = 1; | |
542 | return 0; | |
543 | } | |
544 | ||
545 | if (!strcmp(var, "core.compression")) { | |
546 | int level = git_config_int(var, value); | |
547 | if (level == -1) | |
548 | level = Z_DEFAULT_COMPRESSION; | |
549 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
550 | die("bad zlib compression level %d", level); | |
551 | core_compression_level = level; | |
552 | core_compression_seen = 1; | |
553 | if (!zlib_compression_seen) | |
554 | zlib_compression_level = level; | |
555 | return 0; | |
556 | } | |
557 | ||
558 | if (!strcmp(var, "core.packedgitwindowsize")) { | |
559 | int pgsz_x2 = getpagesize() * 2; | |
560 | packed_git_window_size = git_config_int(var, value); | |
561 | ||
562 | /* This value must be multiple of (pagesize * 2) */ | |
563 | packed_git_window_size /= pgsz_x2; | |
564 | if (packed_git_window_size < 1) | |
565 | packed_git_window_size = 1; | |
566 | packed_git_window_size *= pgsz_x2; | |
567 | return 0; | |
568 | } | |
569 | ||
570 | if (!strcmp(var, "core.packedgitlimit")) { | |
571 | packed_git_limit = git_config_int(var, value); | |
572 | return 0; | |
573 | } | |
574 | ||
575 | if (!strcmp(var, "core.deltabasecachelimit")) { | |
576 | delta_base_cache_limit = git_config_int(var, value); | |
577 | return 0; | |
578 | } | |
579 | ||
580 | if (!strcmp(var, "core.autocrlf")) { | |
581 | if (value && !strcasecmp(value, "input")) { | |
582 | if (eol == EOL_CRLF) | |
583 | return error("core.autocrlf=input conflicts with core.eol=crlf"); | |
584 | auto_crlf = AUTO_CRLF_INPUT; | |
585 | return 0; | |
586 | } | |
587 | auto_crlf = git_config_bool(var, value); | |
588 | return 0; | |
589 | } | |
590 | ||
591 | if (!strcmp(var, "core.safecrlf")) { | |
592 | if (value && !strcasecmp(value, "warn")) { | |
593 | safe_crlf = SAFE_CRLF_WARN; | |
594 | return 0; | |
595 | } | |
596 | safe_crlf = git_config_bool(var, value); | |
597 | return 0; | |
598 | } | |
599 | ||
600 | if (!strcmp(var, "core.eol")) { | |
601 | if (value && !strcasecmp(value, "lf")) | |
602 | eol = EOL_LF; | |
603 | else if (value && !strcasecmp(value, "crlf")) | |
604 | eol = EOL_CRLF; | |
605 | else if (value && !strcasecmp(value, "native")) | |
606 | eol = EOL_NATIVE; | |
607 | else | |
608 | eol = EOL_UNSET; | |
609 | if (eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT) | |
610 | return error("core.autocrlf=input conflicts with core.eol=crlf"); | |
611 | return 0; | |
612 | } | |
613 | ||
614 | if (!strcmp(var, "core.notesref")) { | |
615 | notes_ref_name = xstrdup(value); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | if (!strcmp(var, "core.pager")) | |
620 | return git_config_string(&pager_program, var, value); | |
621 | ||
622 | if (!strcmp(var, "core.editor")) | |
623 | return git_config_string(&editor_program, var, value); | |
624 | ||
625 | if (!strcmp(var, "core.askpass")) | |
626 | return git_config_string(&askpass_program, var, value); | |
627 | ||
628 | if (!strcmp(var, "core.excludesfile")) | |
629 | return git_config_pathname(&excludes_file, var, value); | |
630 | ||
631 | if (!strcmp(var, "core.whitespace")) { | |
632 | if (!value) | |
633 | return config_error_nonbool(var); | |
634 | whitespace_rule_cfg = parse_whitespace_rule(value); | |
635 | return 0; | |
636 | } | |
637 | ||
638 | if (!strcmp(var, "core.fsyncobjectfiles")) { | |
639 | fsync_object_files = git_config_bool(var, value); | |
640 | return 0; | |
641 | } | |
642 | ||
643 | if (!strcmp(var, "core.preloadindex")) { | |
644 | core_preload_index = git_config_bool(var, value); | |
645 | return 0; | |
646 | } | |
647 | ||
648 | if (!strcmp(var, "core.createobject")) { | |
649 | if (!strcmp(value, "rename")) | |
650 | object_creation_mode = OBJECT_CREATION_USES_RENAMES; | |
651 | else if (!strcmp(value, "link")) | |
652 | object_creation_mode = OBJECT_CREATION_USES_HARDLINKS; | |
653 | else | |
654 | die("Invalid mode for object creation: %s", value); | |
655 | return 0; | |
656 | } | |
657 | ||
658 | if (!strcmp(var, "core.sparsecheckout")) { | |
659 | core_apply_sparse_checkout = git_config_bool(var, value); | |
660 | return 0; | |
661 | } | |
662 | ||
663 | /* Add other config variables here and to Documentation/config.txt. */ | |
664 | return 0; | |
665 | } | |
666 | ||
667 | static int git_default_user_config(const char *var, const char *value) | |
668 | { | |
669 | if (!strcmp(var, "user.name")) { | |
670 | if (!value) | |
671 | return config_error_nonbool(var); | |
672 | strlcpy(git_default_name, value, sizeof(git_default_name)); | |
673 | user_ident_explicitly_given |= IDENT_NAME_GIVEN; | |
674 | return 0; | |
675 | } | |
676 | ||
677 | if (!strcmp(var, "user.email")) { | |
678 | if (!value) | |
679 | return config_error_nonbool(var); | |
680 | strlcpy(git_default_email, value, sizeof(git_default_email)); | |
681 | user_ident_explicitly_given |= IDENT_MAIL_GIVEN; | |
682 | return 0; | |
683 | } | |
684 | ||
685 | /* Add other config variables here and to Documentation/config.txt. */ | |
686 | return 0; | |
687 | } | |
688 | ||
689 | static int git_default_i18n_config(const char *var, const char *value) | |
690 | { | |
691 | if (!strcmp(var, "i18n.commitencoding")) | |
692 | return git_config_string(&git_commit_encoding, var, value); | |
693 | ||
694 | if (!strcmp(var, "i18n.logoutputencoding")) | |
695 | return git_config_string(&git_log_output_encoding, var, value); | |
696 | ||
697 | /* Add other config variables here and to Documentation/config.txt. */ | |
698 | return 0; | |
699 | } | |
700 | ||
701 | static int git_default_branch_config(const char *var, const char *value) | |
702 | { | |
703 | if (!strcmp(var, "branch.autosetupmerge")) { | |
704 | if (value && !strcasecmp(value, "always")) { | |
705 | git_branch_track = BRANCH_TRACK_ALWAYS; | |
706 | return 0; | |
707 | } | |
708 | git_branch_track = git_config_bool(var, value); | |
709 | return 0; | |
710 | } | |
711 | if (!strcmp(var, "branch.autosetuprebase")) { | |
712 | if (!value) | |
713 | return config_error_nonbool(var); | |
714 | else if (!strcmp(value, "never")) | |
715 | autorebase = AUTOREBASE_NEVER; | |
716 | else if (!strcmp(value, "local")) | |
717 | autorebase = AUTOREBASE_LOCAL; | |
718 | else if (!strcmp(value, "remote")) | |
719 | autorebase = AUTOREBASE_REMOTE; | |
720 | else if (!strcmp(value, "always")) | |
721 | autorebase = AUTOREBASE_ALWAYS; | |
722 | else | |
723 | return error("Malformed value for %s", var); | |
724 | return 0; | |
725 | } | |
726 | ||
727 | /* Add other config variables here and to Documentation/config.txt. */ | |
728 | return 0; | |
729 | } | |
730 | ||
731 | static int git_default_push_config(const char *var, const char *value) | |
732 | { | |
733 | if (!strcmp(var, "push.default")) { | |
734 | if (!value) | |
735 | return config_error_nonbool(var); | |
736 | else if (!strcmp(value, "nothing")) | |
737 | push_default = PUSH_DEFAULT_NOTHING; | |
738 | else if (!strcmp(value, "matching")) | |
739 | push_default = PUSH_DEFAULT_MATCHING; | |
740 | else if (!strcmp(value, "tracking")) | |
741 | push_default = PUSH_DEFAULT_TRACKING; | |
742 | else if (!strcmp(value, "current")) | |
743 | push_default = PUSH_DEFAULT_CURRENT; | |
744 | else { | |
745 | error("Malformed value for %s: %s", var, value); | |
746 | return error("Must be one of nothing, matching, " | |
747 | "tracking or current."); | |
748 | } | |
749 | return 0; | |
750 | } | |
751 | ||
752 | /* Add other config variables here and to Documentation/config.txt. */ | |
753 | return 0; | |
754 | } | |
755 | ||
756 | static int git_default_mailmap_config(const char *var, const char *value) | |
757 | { | |
758 | if (!strcmp(var, "mailmap.file")) | |
759 | return git_config_string(&git_mailmap_file, var, value); | |
760 | ||
761 | /* Add other config variables here and to Documentation/config.txt. */ | |
762 | return 0; | |
763 | } | |
764 | ||
765 | int git_default_config(const char *var, const char *value, void *dummy) | |
766 | { | |
767 | if (!prefixcmp(var, "core.")) | |
768 | return git_default_core_config(var, value); | |
769 | ||
770 | if (!prefixcmp(var, "user.")) | |
771 | return git_default_user_config(var, value); | |
772 | ||
773 | if (!prefixcmp(var, "i18n.")) | |
774 | return git_default_i18n_config(var, value); | |
775 | ||
776 | if (!prefixcmp(var, "branch.")) | |
777 | return git_default_branch_config(var, value); | |
778 | ||
779 | if (!prefixcmp(var, "push.")) | |
780 | return git_default_push_config(var, value); | |
781 | ||
782 | if (!prefixcmp(var, "mailmap.")) | |
783 | return git_default_mailmap_config(var, value); | |
784 | ||
785 | if (!prefixcmp(var, "advice.")) | |
786 | return git_default_advice_config(var, value); | |
787 | ||
788 | if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) { | |
789 | pager_use_color = git_config_bool(var,value); | |
790 | return 0; | |
791 | } | |
792 | ||
793 | /* Add other config variables here and to Documentation/config.txt. */ | |
794 | return 0; | |
795 | } | |
796 | ||
797 | int git_config_from_file(config_fn_t fn, const char *filename, void *data) | |
798 | { | |
799 | int ret; | |
800 | FILE *f = fopen(filename, "r"); | |
801 | ||
802 | ret = -1; | |
803 | if (f) { | |
804 | config_file = f; | |
805 | config_file_name = filename; | |
806 | config_linenr = 1; | |
807 | config_file_eof = 0; | |
808 | ret = git_parse_file(fn, data); | |
809 | fclose(f); | |
810 | config_file_name = NULL; | |
811 | } | |
812 | return ret; | |
813 | } | |
814 | ||
815 | const char *git_etc_gitconfig(void) | |
816 | { | |
817 | static const char *system_wide; | |
818 | if (!system_wide) | |
819 | system_wide = system_path(ETC_GITCONFIG); | |
820 | return system_wide; | |
821 | } | |
822 | ||
823 | int git_env_bool(const char *k, int def) | |
824 | { | |
825 | const char *v = getenv(k); | |
826 | return v ? git_config_bool(k, v) : def; | |
827 | } | |
828 | ||
829 | int git_config_system(void) | |
830 | { | |
831 | return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0); | |
832 | } | |
833 | ||
834 | int git_config_global(void) | |
835 | { | |
836 | return !git_env_bool("GIT_CONFIG_NOGLOBAL", 0); | |
837 | } | |
838 | ||
839 | int git_config_from_parameters(config_fn_t fn, void *data) | |
840 | { | |
841 | static int loaded_environment; | |
842 | const struct config_item *ct; | |
843 | ||
844 | if (!loaded_environment) { | |
845 | if (git_config_parse_environment() < 0) | |
846 | return -1; | |
847 | loaded_environment = 1; | |
848 | } | |
849 | for (ct = config_parameters; ct; ct = ct->next) | |
850 | if (fn(ct->name, ct->value, data) < 0) | |
851 | return -1; | |
852 | return 0; | |
853 | } | |
854 | ||
855 | int git_config_early(config_fn_t fn, void *data, const char *repo_config) | |
856 | { | |
857 | int ret = 0, found = 0; | |
858 | const char *home = NULL; | |
859 | ||
860 | /* Setting $GIT_CONFIG makes git read _only_ the given config file. */ | |
861 | if (config_exclusive_filename) | |
862 | return git_config_from_file(fn, config_exclusive_filename, data); | |
863 | if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) { | |
864 | ret += git_config_from_file(fn, git_etc_gitconfig(), | |
865 | data); | |
866 | found += 1; | |
867 | } | |
868 | ||
869 | home = getenv("HOME"); | |
870 | if (git_config_global() && home) { | |
871 | char *user_config = xstrdup(mkpath("%s/.gitconfig", home)); | |
872 | if (!access(user_config, R_OK)) { | |
873 | ret += git_config_from_file(fn, user_config, data); | |
874 | found += 1; | |
875 | } | |
876 | free(user_config); | |
877 | } | |
878 | ||
879 | if (repo_config && !access(repo_config, R_OK)) { | |
880 | ret += git_config_from_file(fn, repo_config, data); | |
881 | found += 1; | |
882 | } | |
883 | ||
884 | ret += git_config_from_parameters(fn, data); | |
885 | if (config_parameters) | |
886 | found += 1; | |
887 | ||
888 | return ret == 0 ? found : ret; | |
889 | } | |
890 | ||
891 | int git_config(config_fn_t fn, void *data) | |
892 | { | |
893 | char *repo_config = NULL; | |
894 | int ret; | |
895 | ||
896 | repo_config = git_pathdup("config"); | |
897 | ret = git_config_early(fn, data, repo_config); | |
898 | if (repo_config) | |
899 | free(repo_config); | |
900 | return ret; | |
901 | } | |
902 | ||
903 | /* | |
904 | * Find all the stuff for git_config_set() below. | |
905 | */ | |
906 | ||
907 | #define MAX_MATCHES 512 | |
908 | ||
909 | static struct { | |
910 | int baselen; | |
911 | char *key; | |
912 | int do_not_match; | |
913 | regex_t *value_regex; | |
914 | int multi_replace; | |
915 | size_t offset[MAX_MATCHES]; | |
916 | enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state; | |
917 | int seen; | |
918 | } store; | |
919 | ||
920 | static int matches(const char *key, const char *value) | |
921 | { | |
922 | return !strcmp(key, store.key) && | |
923 | (store.value_regex == NULL || | |
924 | (store.do_not_match ^ | |
925 | !regexec(store.value_regex, value, 0, NULL, 0))); | |
926 | } | |
927 | ||
928 | static int store_aux(const char *key, const char *value, void *cb) | |
929 | { | |
930 | const char *ep; | |
931 | size_t section_len; | |
932 | ||
933 | switch (store.state) { | |
934 | case KEY_SEEN: | |
935 | if (matches(key, value)) { | |
936 | if (store.seen == 1 && store.multi_replace == 0) { | |
937 | warning("%s has multiple values", key); | |
938 | } else if (store.seen >= MAX_MATCHES) { | |
939 | error("too many matches for %s", key); | |
940 | return 1; | |
941 | } | |
942 | ||
943 | store.offset[store.seen] = ftell(config_file); | |
944 | store.seen++; | |
945 | } | |
946 | break; | |
947 | case SECTION_SEEN: | |
948 | /* | |
949 | * What we are looking for is in store.key (both | |
950 | * section and var), and its section part is baselen | |
951 | * long. We found key (again, both section and var). | |
952 | * We would want to know if this key is in the same | |
953 | * section as what we are looking for. We already | |
954 | * know we are in the same section as what should | |
955 | * hold store.key. | |
956 | */ | |
957 | ep = strrchr(key, '.'); | |
958 | section_len = ep - key; | |
959 | ||
960 | if ((section_len != store.baselen) || | |
961 | memcmp(key, store.key, section_len+1)) { | |
962 | store.state = SECTION_END_SEEN; | |
963 | break; | |
964 | } | |
965 | ||
966 | /* | |
967 | * Do not increment matches: this is no match, but we | |
968 | * just made sure we are in the desired section. | |
969 | */ | |
970 | store.offset[store.seen] = ftell(config_file); | |
971 | /* fallthru */ | |
972 | case SECTION_END_SEEN: | |
973 | case START: | |
974 | if (matches(key, value)) { | |
975 | store.offset[store.seen] = ftell(config_file); | |
976 | store.state = KEY_SEEN; | |
977 | store.seen++; | |
978 | } else { | |
979 | if (strrchr(key, '.') - key == store.baselen && | |
980 | !strncmp(key, store.key, store.baselen)) { | |
981 | store.state = SECTION_SEEN; | |
982 | store.offset[store.seen] = ftell(config_file); | |
983 | } | |
984 | } | |
985 | } | |
986 | return 0; | |
987 | } | |
988 | ||
989 | static int write_error(const char *filename) | |
990 | { | |
991 | error("failed to write new configuration file %s", filename); | |
992 | ||
993 | /* Same error code as "failed to rename". */ | |
994 | return 4; | |
995 | } | |
996 | ||
997 | static int store_write_section(int fd, const char *key) | |
998 | { | |
999 | const char *dot; | |
1000 | int i, success; | |
1001 | struct strbuf sb = STRBUF_INIT; | |
1002 | ||
1003 | dot = memchr(key, '.', store.baselen); | |
1004 | if (dot) { | |
1005 | strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key); | |
1006 | for (i = dot - key + 1; i < store.baselen; i++) { | |
1007 | if (key[i] == '"' || key[i] == '\\') | |
1008 | strbuf_addch(&sb, '\\'); | |
1009 | strbuf_addch(&sb, key[i]); | |
1010 | } | |
1011 | strbuf_addstr(&sb, "\"]\n"); | |
1012 | } else { | |
1013 | strbuf_addf(&sb, "[%.*s]\n", store.baselen, key); | |
1014 | } | |
1015 | ||
1016 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; | |
1017 | strbuf_release(&sb); | |
1018 | ||
1019 | return success; | |
1020 | } | |
1021 | ||
1022 | static int store_write_pair(int fd, const char *key, const char *value) | |
1023 | { | |
1024 | int i, success; | |
1025 | int length = strlen(key + store.baselen + 1); | |
1026 | const char *quote = ""; | |
1027 | struct strbuf sb = STRBUF_INIT; | |
1028 | ||
1029 | /* | |
1030 | * Check to see if the value needs to be surrounded with a dq pair. | |
1031 | * Note that problematic characters are always backslash-quoted; this | |
1032 | * check is about not losing leading or trailing SP and strings that | |
1033 | * follow beginning-of-comment characters (i.e. ';' and '#') by the | |
1034 | * configuration parser. | |
1035 | */ | |
1036 | if (value[0] == ' ') | |
1037 | quote = "\""; | |
1038 | for (i = 0; value[i]; i++) | |
1039 | if (value[i] == ';' || value[i] == '#') | |
1040 | quote = "\""; | |
1041 | if (i && value[i - 1] == ' ') | |
1042 | quote = "\""; | |
1043 | ||
1044 | strbuf_addf(&sb, "\t%.*s = %s", | |
1045 | length, key + store.baselen + 1, quote); | |
1046 | ||
1047 | for (i = 0; value[i]; i++) | |
1048 | switch (value[i]) { | |
1049 | case '\n': | |
1050 | strbuf_addstr(&sb, "\\n"); | |
1051 | break; | |
1052 | case '\t': | |
1053 | strbuf_addstr(&sb, "\\t"); | |
1054 | break; | |
1055 | case '"': | |
1056 | case '\\': | |
1057 | strbuf_addch(&sb, '\\'); | |
1058 | default: | |
1059 | strbuf_addch(&sb, value[i]); | |
1060 | break; | |
1061 | } | |
1062 | strbuf_addf(&sb, "%s\n", quote); | |
1063 | ||
1064 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; | |
1065 | strbuf_release(&sb); | |
1066 | ||
1067 | return success; | |
1068 | } | |
1069 | ||
1070 | static ssize_t find_beginning_of_line(const char *contents, size_t size, | |
1071 | size_t offset_, int *found_bracket) | |
1072 | { | |
1073 | size_t equal_offset = size, bracket_offset = size; | |
1074 | ssize_t offset; | |
1075 | ||
1076 | contline: | |
1077 | for (offset = offset_-2; offset > 0 | |
1078 | && contents[offset] != '\n'; offset--) | |
1079 | switch (contents[offset]) { | |
1080 | case '=': equal_offset = offset; break; | |
1081 | case ']': bracket_offset = offset; break; | |
1082 | } | |
1083 | if (offset > 0 && contents[offset-1] == '\\') { | |
1084 | offset_ = offset; | |
1085 | goto contline; | |
1086 | } | |
1087 | if (bracket_offset < equal_offset) { | |
1088 | *found_bracket = 1; | |
1089 | offset = bracket_offset+1; | |
1090 | } else | |
1091 | offset++; | |
1092 | ||
1093 | return offset; | |
1094 | } | |
1095 | ||
1096 | int git_config_set(const char *key, const char *value) | |
1097 | { | |
1098 | return git_config_set_multivar(key, value, NULL, 0); | |
1099 | } | |
1100 | ||
1101 | /* | |
1102 | * If value==NULL, unset in (remove from) config, | |
1103 | * if value_regex!=NULL, disregard key/value pairs where value does not match. | |
1104 | * if multi_replace==0, nothing, or only one matching key/value is replaced, | |
1105 | * else all matching key/values (regardless how many) are removed, | |
1106 | * before the new pair is written. | |
1107 | * | |
1108 | * Returns 0 on success. | |
1109 | * | |
1110 | * This function does this: | |
1111 | * | |
1112 | * - it locks the config file by creating ".git/config.lock" | |
1113 | * | |
1114 | * - it then parses the config using store_aux() as validator to find | |
1115 | * the position on the key/value pair to replace. If it is to be unset, | |
1116 | * it must be found exactly once. | |
1117 | * | |
1118 | * - the config file is mmap()ed and the part before the match (if any) is | |
1119 | * written to the lock file, then the changed part and the rest. | |
1120 | * | |
1121 | * - the config file is removed and the lock file rename()d to it. | |
1122 | * | |
1123 | */ | |
1124 | int git_config_set_multivar(const char *key, const char *value, | |
1125 | const char *value_regex, int multi_replace) | |
1126 | { | |
1127 | int i, dot; | |
1128 | int fd = -1, in_fd; | |
1129 | int ret; | |
1130 | char *config_filename; | |
1131 | struct lock_file *lock = NULL; | |
1132 | const char *last_dot = strrchr(key, '.'); | |
1133 | ||
1134 | if (config_exclusive_filename) | |
1135 | config_filename = xstrdup(config_exclusive_filename); | |
1136 | else | |
1137 | config_filename = git_pathdup("config"); | |
1138 | ||
1139 | /* | |
1140 | * Since "key" actually contains the section name and the real | |
1141 | * key name separated by a dot, we have to know where the dot is. | |
1142 | */ | |
1143 | ||
1144 | if (last_dot == NULL) { | |
1145 | error("key does not contain a section: %s", key); | |
1146 | ret = 2; | |
1147 | goto out_free; | |
1148 | } | |
1149 | store.baselen = last_dot - key; | |
1150 | ||
1151 | store.multi_replace = multi_replace; | |
1152 | ||
1153 | /* | |
1154 | * Validate the key and while at it, lower case it for matching. | |
1155 | */ | |
1156 | store.key = xmalloc(strlen(key) + 1); | |
1157 | dot = 0; | |
1158 | for (i = 0; key[i]; i++) { | |
1159 | unsigned char c = key[i]; | |
1160 | if (c == '.') | |
1161 | dot = 1; | |
1162 | /* Leave the extended basename untouched.. */ | |
1163 | if (!dot || i > store.baselen) { | |
1164 | if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) { | |
1165 | error("invalid key: %s", key); | |
1166 | free(store.key); | |
1167 | ret = 1; | |
1168 | goto out_free; | |
1169 | } | |
1170 | c = tolower(c); | |
1171 | } else if (c == '\n') { | |
1172 | error("invalid key (newline): %s", key); | |
1173 | free(store.key); | |
1174 | ret = 1; | |
1175 | goto out_free; | |
1176 | } | |
1177 | store.key[i] = c; | |
1178 | } | |
1179 | store.key[i] = 0; | |
1180 | ||
1181 | /* | |
1182 | * The lock serves a purpose in addition to locking: the new | |
1183 | * contents of .git/config will be written into it. | |
1184 | */ | |
1185 | lock = xcalloc(sizeof(struct lock_file), 1); | |
1186 | fd = hold_lock_file_for_update(lock, config_filename, 0); | |
1187 | if (fd < 0) { | |
1188 | error("could not lock config file %s: %s", config_filename, strerror(errno)); | |
1189 | free(store.key); | |
1190 | ret = -1; | |
1191 | goto out_free; | |
1192 | } | |
1193 | ||
1194 | /* | |
1195 | * If .git/config does not exist yet, write a minimal version. | |
1196 | */ | |
1197 | in_fd = open(config_filename, O_RDONLY); | |
1198 | if ( in_fd < 0 ) { | |
1199 | free(store.key); | |
1200 | ||
1201 | if ( ENOENT != errno ) { | |
1202 | error("opening %s: %s", config_filename, | |
1203 | strerror(errno)); | |
1204 | ret = 3; /* same as "invalid config file" */ | |
1205 | goto out_free; | |
1206 | } | |
1207 | /* if nothing to unset, error out */ | |
1208 | if (value == NULL) { | |
1209 | ret = 5; | |
1210 | goto out_free; | |
1211 | } | |
1212 | ||
1213 | store.key = (char *)key; | |
1214 | if (!store_write_section(fd, key) || | |
1215 | !store_write_pair(fd, key, value)) | |
1216 | goto write_err_out; | |
1217 | } else { | |
1218 | struct stat st; | |
1219 | char *contents; | |
1220 | size_t contents_sz, copy_begin, copy_end; | |
1221 | int i, new_line = 0; | |
1222 | ||
1223 | if (value_regex == NULL) | |
1224 | store.value_regex = NULL; | |
1225 | else { | |
1226 | if (value_regex[0] == '!') { | |
1227 | store.do_not_match = 1; | |
1228 | value_regex++; | |
1229 | } else | |
1230 | store.do_not_match = 0; | |
1231 | ||
1232 | store.value_regex = (regex_t*)xmalloc(sizeof(regex_t)); | |
1233 | if (regcomp(store.value_regex, value_regex, | |
1234 | REG_EXTENDED)) { | |
1235 | error("invalid pattern: %s", value_regex); | |
1236 | free(store.value_regex); | |
1237 | ret = 6; | |
1238 | goto out_free; | |
1239 | } | |
1240 | } | |
1241 | ||
1242 | store.offset[0] = 0; | |
1243 | store.state = START; | |
1244 | store.seen = 0; | |
1245 | ||
1246 | /* | |
1247 | * After this, store.offset will contain the *end* offset | |
1248 | * of the last match, or remain at 0 if no match was found. | |
1249 | * As a side effect, we make sure to transform only a valid | |
1250 | * existing config file. | |
1251 | */ | |
1252 | if (git_config_from_file(store_aux, config_filename, NULL)) { | |
1253 | error("invalid config file %s", config_filename); | |
1254 | free(store.key); | |
1255 | if (store.value_regex != NULL) { | |
1256 | regfree(store.value_regex); | |
1257 | free(store.value_regex); | |
1258 | } | |
1259 | ret = 3; | |
1260 | goto out_free; | |
1261 | } | |
1262 | ||
1263 | free(store.key); | |
1264 | if (store.value_regex != NULL) { | |
1265 | regfree(store.value_regex); | |
1266 | free(store.value_regex); | |
1267 | } | |
1268 | ||
1269 | /* if nothing to unset, or too many matches, error out */ | |
1270 | if ((store.seen == 0 && value == NULL) || | |
1271 | (store.seen > 1 && multi_replace == 0)) { | |
1272 | ret = 5; | |
1273 | goto out_free; | |
1274 | } | |
1275 | ||
1276 | fstat(in_fd, &st); | |
1277 | contents_sz = xsize_t(st.st_size); | |
1278 | contents = xmmap(NULL, contents_sz, PROT_READ, | |
1279 | MAP_PRIVATE, in_fd, 0); | |
1280 | close(in_fd); | |
1281 | ||
1282 | if (store.seen == 0) | |
1283 | store.seen = 1; | |
1284 | ||
1285 | for (i = 0, copy_begin = 0; i < store.seen; i++) { | |
1286 | if (store.offset[i] == 0) { | |
1287 | store.offset[i] = copy_end = contents_sz; | |
1288 | } else if (store.state != KEY_SEEN) { | |
1289 | copy_end = store.offset[i]; | |
1290 | } else | |
1291 | copy_end = find_beginning_of_line( | |
1292 | contents, contents_sz, | |
1293 | store.offset[i]-2, &new_line); | |
1294 | ||
1295 | if (copy_end > 0 && contents[copy_end-1] != '\n') | |
1296 | new_line = 1; | |
1297 | ||
1298 | /* write the first part of the config */ | |
1299 | if (copy_end > copy_begin) { | |
1300 | if (write_in_full(fd, contents + copy_begin, | |
1301 | copy_end - copy_begin) < | |
1302 | copy_end - copy_begin) | |
1303 | goto write_err_out; | |
1304 | if (new_line && | |
1305 | write_str_in_full(fd, "\n") != 1) | |
1306 | goto write_err_out; | |
1307 | } | |
1308 | copy_begin = store.offset[i]; | |
1309 | } | |
1310 | ||
1311 | /* write the pair (value == NULL means unset) */ | |
1312 | if (value != NULL) { | |
1313 | if (store.state == START) { | |
1314 | if (!store_write_section(fd, key)) | |
1315 | goto write_err_out; | |
1316 | } | |
1317 | if (!store_write_pair(fd, key, value)) | |
1318 | goto write_err_out; | |
1319 | } | |
1320 | ||
1321 | /* write the rest of the config */ | |
1322 | if (copy_begin < contents_sz) | |
1323 | if (write_in_full(fd, contents + copy_begin, | |
1324 | contents_sz - copy_begin) < | |
1325 | contents_sz - copy_begin) | |
1326 | goto write_err_out; | |
1327 | ||
1328 | munmap(contents, contents_sz); | |
1329 | } | |
1330 | ||
1331 | if (commit_lock_file(lock) < 0) { | |
1332 | error("could not commit config file %s", config_filename); | |
1333 | ret = 4; | |
1334 | goto out_free; | |
1335 | } | |
1336 | ||
1337 | /* | |
1338 | * lock is committed, so don't try to roll it back below. | |
1339 | * NOTE: Since lockfile.c keeps a linked list of all created | |
1340 | * lock_file structures, it isn't safe to free(lock). It's | |
1341 | * better to just leave it hanging around. | |
1342 | */ | |
1343 | lock = NULL; | |
1344 | ret = 0; | |
1345 | ||
1346 | out_free: | |
1347 | if (lock) | |
1348 | rollback_lock_file(lock); | |
1349 | free(config_filename); | |
1350 | return ret; | |
1351 | ||
1352 | write_err_out: | |
1353 | ret = write_error(lock->filename); | |
1354 | goto out_free; | |
1355 | ||
1356 | } | |
1357 | ||
1358 | static int section_name_match (const char *buf, const char *name) | |
1359 | { | |
1360 | int i = 0, j = 0, dot = 0; | |
1361 | if (buf[i] != '[') | |
1362 | return 0; | |
1363 | for (i = 1; buf[i] && buf[i] != ']'; i++) { | |
1364 | if (!dot && isspace(buf[i])) { | |
1365 | dot = 1; | |
1366 | if (name[j++] != '.') | |
1367 | break; | |
1368 | for (i++; isspace(buf[i]); i++) | |
1369 | ; /* do nothing */ | |
1370 | if (buf[i] != '"') | |
1371 | break; | |
1372 | continue; | |
1373 | } | |
1374 | if (buf[i] == '\\' && dot) | |
1375 | i++; | |
1376 | else if (buf[i] == '"' && dot) { | |
1377 | for (i++; isspace(buf[i]); i++) | |
1378 | ; /* do_nothing */ | |
1379 | break; | |
1380 | } | |
1381 | if (buf[i] != name[j++]) | |
1382 | break; | |
1383 | } | |
1384 | if (buf[i] == ']' && name[j] == 0) { | |
1385 | /* | |
1386 | * We match, now just find the right length offset by | |
1387 | * gobbling up any whitespace after it, as well | |
1388 | */ | |
1389 | i++; | |
1390 | for (; buf[i] && isspace(buf[i]); i++) | |
1391 | ; /* do nothing */ | |
1392 | return i; | |
1393 | } | |
1394 | return 0; | |
1395 | } | |
1396 | ||
1397 | /* if new_name == NULL, the section is removed instead */ | |
1398 | int git_config_rename_section(const char *old_name, const char *new_name) | |
1399 | { | |
1400 | int ret = 0, remove = 0; | |
1401 | char *config_filename; | |
1402 | struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1); | |
1403 | int out_fd; | |
1404 | char buf[1024]; | |
1405 | ||
1406 | if (config_exclusive_filename) | |
1407 | config_filename = xstrdup(config_exclusive_filename); | |
1408 | else | |
1409 | config_filename = git_pathdup("config"); | |
1410 | out_fd = hold_lock_file_for_update(lock, config_filename, 0); | |
1411 | if (out_fd < 0) { | |
1412 | ret = error("could not lock config file %s", config_filename); | |
1413 | goto out; | |
1414 | } | |
1415 | ||
1416 | if (!(config_file = fopen(config_filename, "rb"))) { | |
1417 | /* no config file means nothing to rename, no error */ | |
1418 | goto unlock_and_out; | |
1419 | } | |
1420 | ||
1421 | while (fgets(buf, sizeof(buf), config_file)) { | |
1422 | int i; | |
1423 | int length; | |
1424 | char *output = buf; | |
1425 | for (i = 0; buf[i] && isspace(buf[i]); i++) | |
1426 | ; /* do nothing */ | |
1427 | if (buf[i] == '[') { | |
1428 | /* it's a section */ | |
1429 | int offset = section_name_match(&buf[i], old_name); | |
1430 | if (offset > 0) { | |
1431 | ret++; | |
1432 | if (new_name == NULL) { | |
1433 | remove = 1; | |
1434 | continue; | |
1435 | } | |
1436 | store.baselen = strlen(new_name); | |
1437 | if (!store_write_section(out_fd, new_name)) { | |
1438 | ret = write_error(lock->filename); | |
1439 | goto out; | |
1440 | } | |
1441 | /* | |
1442 | * We wrote out the new section, with | |
1443 | * a newline, now skip the old | |
1444 | * section's length | |
1445 | */ | |
1446 | output += offset + i; | |
1447 | if (strlen(output) > 0) { | |
1448 | /* | |
1449 | * More content means there's | |
1450 | * a declaration to put on the | |
1451 | * next line; indent with a | |
1452 | * tab | |
1453 | */ | |
1454 | output -= 1; | |
1455 | output[0] = '\t'; | |
1456 | } | |
1457 | } | |
1458 | remove = 0; | |
1459 | } | |
1460 | if (remove) | |
1461 | continue; | |
1462 | length = strlen(output); | |
1463 | if (write_in_full(out_fd, output, length) != length) { | |
1464 | ret = write_error(lock->filename); | |
1465 | goto out; | |
1466 | } | |
1467 | } | |
1468 | fclose(config_file); | |
1469 | unlock_and_out: | |
1470 | if (commit_lock_file(lock) < 0) | |
1471 | ret = error("could not commit config file %s", config_filename); | |
1472 | out: | |
1473 | free(config_filename); | |
1474 | return ret; | |
1475 | } | |
1476 | ||
1477 | /* | |
1478 | * Call this to report error for your variable that should not | |
1479 | * get a boolean value (i.e. "[my] var" means "true"). | |
1480 | */ | |
1481 | int config_error_nonbool(const char *var) | |
1482 | { | |
1483 | return error("Missing value for '%s'", var); | |
1484 | } |