Sync with maint
[git/git.git] / config.c
CommitLineData
10bea152
JS
1/*
2 * GIT - The information manager from hell
3 *
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
6 *
7 */
17712991 8#include "cache.h"
b2141fc1 9#include "config.h"
3b256228 10#include "repository.h"
697cc8ef 11#include "lockfile.h"
7f0e39fa 12#include "exec_cmd.h"
572e4f6a 13#include "strbuf.h"
2b64fc89 14#include "quote.h"
3c8687a7
TA
15#include "hashmap.h"
16#include "string-list.h"
599446dc 17#include "utf8.h"
3efd0bed 18#include "dir.h"
17712991 19
4d8dd149
HV
20struct config_source {
21 struct config_source *prev;
22 union {
23 FILE *file;
1bc88819
HV
24 struct config_buf {
25 const char *buf;
26 size_t len;
27 size_t pos;
28 } buf;
4d8dd149 29 } u;
1b8132d9 30 enum config_origin_type origin_type;
924aaf3e 31 const char *name;
d14d4244 32 const char *path;
b2dc0945 33 int die_on_error;
924aaf3e
RJ
34 int linenr;
35 int eof;
36 struct strbuf value;
0971e992 37 struct strbuf var;
924aaf3e 38
49d6cfa5
JK
39 int (*do_fgetc)(struct config_source *c);
40 int (*do_ungetc)(int c, struct config_source *conf);
41 long (*do_ftell)(struct config_source *c);
4d8dd149
HV
42};
43
0d44a2da
JK
44/*
45 * These variables record the "current" config source, which
46 * can be accessed by parsing callbacks.
47 *
48 * The "cf" variable will be non-NULL only when we are actually parsing a real
49 * config source (file, blob, cmdline, etc).
50 *
51 * The "current_config_kvi" variable will be non-NULL only when we are feeding
52 * cached config from a configset into a callback.
53 *
54 * They should generally never be non-NULL at the same time. If they are both
55 * NULL, then we aren't parsing anything (and depending on the function looking
56 * at the variables, it's either a bug for it to be called in the first place,
57 * or it's a function which can be reused for non-config purposes, and should
58 * fall back to some sane behavior).
59 */
4d8dd149 60static struct config_source *cf;
0d44a2da 61static struct key_value_info *current_config_kvi;
924aaf3e 62
9acc5911
JK
63/*
64 * Similar to the variables above, this gives access to the "scope" of the
65 * current value (repo, global, etc). For cached values, it can be found via
66 * the current_config_kvi as above. During parsing, the current value can be
67 * found in this variable. It's not part of "cf" because it transcends a single
68 * file (i.e., a file included from .git/config is still in "repo" scope).
69 */
70static enum config_scope current_parsing_scope;
924aaf3e 71
8de7eeb5
JH
72static int core_compression_seen;
73static int pack_compression_seen;
960ccca6
DH
74static int zlib_compression_seen;
75
4d8dd149
HV
76static int config_file_fgetc(struct config_source *conf)
77{
260d408e 78 return getc_unlocked(conf->u.file);
4d8dd149
HV
79}
80
81static int config_file_ungetc(int c, struct config_source *conf)
82{
83 return ungetc(c, conf->u.file);
84}
85
86static long config_file_ftell(struct config_source *conf)
87{
88 return ftell(conf->u.file);
89}
90
1bc88819
HV
91
92static int config_buf_fgetc(struct config_source *conf)
93{
94 if (conf->u.buf.pos < conf->u.buf.len)
95 return conf->u.buf.buf[conf->u.buf.pos++];
96
97 return EOF;
98}
99
100static int config_buf_ungetc(int c, struct config_source *conf)
101{
1d0655c1
JK
102 if (conf->u.buf.pos > 0) {
103 conf->u.buf.pos--;
104 if (conf->u.buf.buf[conf->u.buf.pos] != c)
105 die("BUG: config_buf can only ungetc the same character");
106 return c;
107 }
1bc88819
HV
108
109 return EOF;
110}
111
112static long config_buf_ftell(struct config_source *conf)
113{
114 return conf->u.buf.pos;
115}
116
9b25a0b5
JK
117#define MAX_INCLUDE_DEPTH 10
118static const char include_depth_advice[] =
119"exceeded maximum include depth (%d) while including\n"
120" %s\n"
121"from\n"
122" %s\n"
123"Do you have circular includes?";
124static int handle_path_include(const char *path, struct config_include_data *inc)
125{
126 int ret = 0;
127 struct strbuf buf = STRBUF_INIT;
67beb600 128 char *expanded;
4c0a89fc 129
67beb600
JK
130 if (!path)
131 return config_error_nonbool("include.path");
132
4aad2f16 133 expanded = expand_user_path(path, 0);
4c0a89fc 134 if (!expanded)
8c3ca351 135 return error("could not expand include path '%s'", path);
4c0a89fc 136 path = expanded;
9b25a0b5
JK
137
138 /*
139 * Use an absolute path as-is, but interpret relative paths
140 * based on the including config file.
141 */
142 if (!is_absolute_path(path)) {
143 char *slash;
144
d14d4244 145 if (!cf || !cf->path)
9b25a0b5
JK
146 return error("relative config includes must come from files");
147
d14d4244 148 slash = find_last_dir_sep(cf->path);
9b25a0b5 149 if (slash)
d14d4244 150 strbuf_add(&buf, cf->path, slash - cf->path + 1);
9b25a0b5
JK
151 strbuf_addstr(&buf, path);
152 path = buf.buf;
153 }
154
4698c8fe 155 if (!access_or_die(path, R_OK, 0)) {
9b25a0b5
JK
156 if (++inc->depth > MAX_INCLUDE_DEPTH)
157 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
3258258f
JK
158 !cf ? "<unknown>" :
159 cf->name ? cf->name :
160 "the command line");
9b25a0b5
JK
161 ret = git_config_from_file(git_config_include, path, inc);
162 inc->depth--;
163 }
164 strbuf_release(&buf);
4c0a89fc 165 free(expanded);
9b25a0b5
JK
166 return ret;
167}
168
3efd0bed
NTND
169static int prepare_include_condition_pattern(struct strbuf *pat)
170{
171 struct strbuf path = STRBUF_INIT;
172 char *expanded;
173 int prefix = 0;
174
86f95157 175 expanded = expand_user_path(pat->buf, 1);
3efd0bed
NTND
176 if (expanded) {
177 strbuf_reset(pat);
178 strbuf_addstr(pat, expanded);
179 free(expanded);
180 }
181
182 if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
183 const char *slash;
184
185 if (!cf || !cf->path)
186 return error(_("relative config include "
187 "conditionals must come from files"));
188
86f95157 189 strbuf_realpath(&path, cf->path, 1);
3efd0bed
NTND
190 slash = find_last_dir_sep(path.buf);
191 if (!slash)
192 die("BUG: how is this possible?");
193 strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
194 prefix = slash - path.buf + 1 /* slash */;
195 } else if (!is_absolute_path(pat->buf))
196 strbuf_insert(pat, 0, "**/", 3);
197
198 if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
199 strbuf_addstr(pat, "**");
200
201 strbuf_release(&path);
202 return prefix;
203}
204
2185fde5
NTND
205static int include_by_gitdir(const struct config_options *opts,
206 const char *cond, size_t cond_len, int icase)
3efd0bed
NTND
207{
208 struct strbuf text = STRBUF_INIT;
209 struct strbuf pattern = STRBUF_INIT;
210 int ret = 0, prefix;
2185fde5 211 const char *git_dir;
0624c63c 212 int already_tried_absolute = 0;
3efd0bed 213
2185fde5
NTND
214 if (opts->git_dir)
215 git_dir = opts->git_dir;
2185fde5
NTND
216 else
217 goto done;
218
c9672ba4 219 strbuf_realpath(&text, git_dir, 1);
3efd0bed
NTND
220 strbuf_add(&pattern, cond, cond_len);
221 prefix = prepare_include_condition_pattern(&pattern);
222
0624c63c 223again:
3efd0bed
NTND
224 if (prefix < 0)
225 goto done;
226
227 if (prefix > 0) {
228 /*
229 * perform literal matching on the prefix part so that
230 * any wildcard character in it can't create side effects.
231 */
232 if (text.len < prefix)
233 goto done;
234 if (!icase && strncmp(pattern.buf, text.buf, prefix))
235 goto done;
236 if (icase && strncasecmp(pattern.buf, text.buf, prefix))
237 goto done;
238 }
239
240 ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
55d34269 241 icase ? WM_CASEFOLD : 0);
3efd0bed 242
0624c63c
ÆAB
243 if (!ret && !already_tried_absolute) {
244 /*
245 * We've tried e.g. matching gitdir:~/work, but if
246 * ~/work is a symlink to /mnt/storage/work
247 * strbuf_realpath() will expand it, so the rule won't
248 * match. Let's match against a
249 * strbuf_add_absolute_path() version of the path,
250 * which'll do the right thing
251 */
252 strbuf_reset(&text);
253 strbuf_add_absolute_path(&text, git_dir);
254 already_tried_absolute = 1;
255 goto again;
256 }
3efd0bed
NTND
257done:
258 strbuf_release(&pattern);
259 strbuf_release(&text);
260 return ret;
261}
262
2185fde5
NTND
263static int include_condition_is_true(const struct config_options *opts,
264 const char *cond, size_t cond_len)
3efd0bed
NTND
265{
266
267 if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
2185fde5 268 return include_by_gitdir(opts, cond, cond_len, 0);
3efd0bed 269 else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
2185fde5 270 return include_by_gitdir(opts, cond, cond_len, 1);
3efd0bed
NTND
271
272 /* unknown conditionals are always false */
273 return 0;
274}
275
9b25a0b5
JK
276int git_config_include(const char *var, const char *value, void *data)
277{
278 struct config_include_data *inc = data;
3efd0bed
NTND
279 const char *cond, *key;
280 int cond_len;
9b25a0b5
JK
281 int ret;
282
283 /*
284 * Pass along all values, including "include" directives; this makes it
285 * possible to query information on the includes themselves.
286 */
287 ret = inc->fn(var, value, inc->data);
288 if (ret < 0)
289 return ret;
290
37007c3a 291 if (!strcmp(var, "include.path"))
9b25a0b5 292 ret = handle_path_include(value, inc);
3efd0bed
NTND
293
294 if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
2185fde5 295 (cond && include_condition_is_true(inc->opts, cond, cond_len)) &&
3efd0bed
NTND
296 !strcmp(key, "path"))
297 ret = handle_path_include(value, inc);
298
9b25a0b5
JK
299 return ret;
300}
301
2b64fc89
JK
302void git_config_push_parameter(const char *text)
303{
304 struct strbuf env = STRBUF_INIT;
305 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
d1f88498 306 if (old && *old) {
2b64fc89
JK
307 strbuf_addstr(&env, old);
308 strbuf_addch(&env, ' ');
309 }
310 sq_quote_buf(&env, text);
311 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
312 strbuf_release(&env);
313}
314
ee98df3f
JH
315static inline int iskeychar(int c)
316{
317 return isalnum(c) || c == '-';
318}
319
320/*
321 * Auxiliary function to sanity-check and split the key into the section
322 * identifier and variable name.
323 *
324 * Returns 0 on success, -1 when there is an invalid character in the key and
325 * -2 if there is no section name in the key.
326 *
327 * store_key - pointer to char* which will hold a copy of the key with
328 * lowercase section and variable name
329 * baselen - pointer to int which will hold the length of the
330 * section + subsection part, can be NULL
331 */
332static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
333{
334 int i, dot, baselen;
335 const char *last_dot = strrchr(key, '.');
336
337 /*
338 * Since "key" actually contains the section name and the real
339 * key name separated by a dot, we have to know where the dot is.
340 */
341
342 if (last_dot == NULL || last_dot == key) {
343 if (!quiet)
344 error("key does not contain a section: %s", key);
345 return -CONFIG_NO_SECTION_OR_NAME;
346 }
347
348 if (!last_dot[1]) {
349 if (!quiet)
350 error("key does not contain variable name: %s", key);
351 return -CONFIG_NO_SECTION_OR_NAME;
352 }
353
354 baselen = last_dot - key;
355 if (baselen_)
356 *baselen_ = baselen;
357
358 /*
359 * Validate the key and while at it, lower case it for matching.
360 */
361 if (store_key)
362 *store_key = xmallocz(strlen(key));
363
364 dot = 0;
365 for (i = 0; key[i]; i++) {
366 unsigned char c = key[i];
367 if (c == '.')
368 dot = 1;
369 /* Leave the extended basename untouched.. */
370 if (!dot || i > baselen) {
371 if (!iskeychar(c) ||
372 (i == baselen + 1 && !isalpha(c))) {
373 if (!quiet)
374 error("invalid key: %s", key);
375 goto out_free_ret_1;
376 }
377 c = tolower(c);
378 } else if (c == '\n') {
379 if (!quiet)
380 error("invalid key (newline): %s", key);
381 goto out_free_ret_1;
382 }
383 if (store_key)
384 (*store_key)[i] = c;
385 }
386
387 return 0;
388
389out_free_ret_1:
390 if (store_key) {
6a83d902 391 FREE_AND_NULL(*store_key);
ee98df3f
JH
392 }
393 return -CONFIG_INVALID_KEY;
394}
395
396int git_config_parse_key(const char *key, char **store_key, int *baselen)
397{
398 return git_config_parse_key_1(key, store_key, baselen, 0);
399}
400
401int git_config_key_is_valid(const char *key)
402{
403 return !git_config_parse_key_1(key, NULL, NULL, 1);
404}
405
2496844b
JK
406int git_config_parse_parameter(const char *text,
407 config_fn_t fn, void *data)
8b1fa778 408{
a789ca70 409 const char *value;
1274a155 410 char *canonical_name;
572e4f6a 411 struct strbuf **pair;
1274a155 412 int ret;
a789ca70 413
f77bccae 414 pair = strbuf_split_str(text, '=', 2);
c5d6350b
JK
415 if (!pair[0])
416 return error("bogus config parameter: %s", text);
a789ca70
JH
417
418 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
572e4f6a 419 strbuf_setlen(pair[0], pair[0]->len - 1);
a789ca70
JH
420 value = pair[1] ? pair[1]->buf : "";
421 } else {
422 value = NULL;
423 }
424
572e4f6a
AR
425 strbuf_trim(pair[0]);
426 if (!pair[0]->len) {
427 strbuf_list_free(pair);
06eb708f 428 return error("bogus config parameter: %s", text);
8b1fa778 429 }
1274a155
JH
430
431 if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
432 ret = -1;
433 } else {
434 ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
435 free(canonical_name);
572e4f6a
AR
436 }
437 strbuf_list_free(pair);
1274a155 438 return ret;
8b1fa778
AR
439}
440
06eb708f
JK
441int git_config_from_parameters(config_fn_t fn, void *data)
442{
2b64fc89 443 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
a77d6db6 444 int ret = 0;
2b64fc89
JK
445 char *envw;
446 const char **argv = NULL;
447 int nr = 0, alloc = 0;
448 int i;
3258258f 449 struct config_source source;
2b64fc89
JK
450
451 if (!env)
452 return 0;
3258258f
JK
453
454 memset(&source, 0, sizeof(source));
455 source.prev = cf;
1b8132d9 456 source.origin_type = CONFIG_ORIGIN_CMDLINE;
3258258f
JK
457 cf = &source;
458
2b64fc89
JK
459 /* sq_dequote will write over it */
460 envw = xstrdup(env);
461
462 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
a77d6db6
JK
463 ret = error("bogus format in " CONFIG_DATA_ENVIRONMENT);
464 goto out;
2b64fc89
JK
465 }
466
467 for (i = 0; i < nr; i++) {
06eb708f 468 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
a77d6db6
JK
469 ret = -1;
470 goto out;
2b64fc89
JK
471 }
472 }
473
a77d6db6 474out:
2b64fc89
JK
475 free(argv);
476 free(envw);
3258258f 477 cf = source.prev;
a77d6db6 478 return ret;
2b64fc89
JK
479}
480
17712991
LT
481static int get_next_char(void)
482{
49d6cfa5 483 int c = cf->do_fgetc(cf);
17712991 484
dbb9a812
HV
485 if (c == '\r') {
486 /* DOS like systems */
49d6cfa5 487 c = cf->do_fgetc(cf);
dbb9a812 488 if (c != '\n') {
5e0be134
JK
489 if (c != EOF)
490 cf->do_ungetc(c, cf);
dbb9a812 491 c = '\r';
17712991
LT
492 }
493 }
dbb9a812
HV
494 if (c == '\n')
495 cf->linenr++;
496 if (c == EOF) {
497 cf->eof = 1;
b3b3f60b 498 cf->linenr++;
dbb9a812
HV
499 c = '\n';
500 }
17712991
LT
501 return c;
502}
503
504static char *parse_value(void)
505{
e96c19c5 506 int quote = 0, comment = 0, space = 0;
17712991 507
924aaf3e 508 strbuf_reset(&cf->value);
17712991
LT
509 for (;;) {
510 int c = get_next_char();
17712991 511 if (c == '\n') {
4b340593
MS
512 if (quote) {
513 cf->linenr--;
17712991 514 return NULL;
4b340593 515 }
924aaf3e 516 return cf->value.buf;
17712991
LT
517 }
518 if (comment)
519 continue;
520 if (isspace(c) && !quote) {
924aaf3e 521 if (cf->value.len)
ebdaae37 522 space++;
17712991
LT
523 continue;
524 }
7ebdba61
JS
525 if (!quote) {
526 if (c == ';' || c == '#') {
527 comment = 1;
528 continue;
529 }
530 }
ebdaae37 531 for (; space; space--)
924aaf3e 532 strbuf_addch(&cf->value, ' ');
17712991
LT
533 if (c == '\\') {
534 c = get_next_char();
535 switch (c) {
536 case '\n':
537 continue;
538 case 't':
539 c = '\t';
540 break;
541 case 'b':
542 c = '\b';
543 break;
544 case 'n':
545 c = '\n';
546 break;
5cbb401d
LT
547 /* Some characters escape as themselves */
548 case '\\': case '"':
549 break;
550 /* Reject unknown escape sequences */
551 default:
552 return NULL;
17712991 553 }
924aaf3e 554 strbuf_addch(&cf->value, c);
17712991
LT
555 continue;
556 }
557 if (c == '"') {
558 quote = 1-quote;
559 continue;
560 }
924aaf3e 561 strbuf_addch(&cf->value, c);
17712991
LT
562 }
563}
564
0971e992 565static int get_value(config_fn_t fn, void *data, struct strbuf *name)
17712991
LT
566{
567 int c;
568 char *value;
b3b3f60b 569 int ret;
17712991
LT
570
571 /* Get the full name */
572 for (;;) {
573 c = get_next_char();
924aaf3e 574 if (cf->eof)
17712991 575 break;
38c5afa8 576 if (!iskeychar(c))
17712991 577 break;
0971e992 578 strbuf_addch(name, tolower(c));
17712991 579 }
0971e992 580
17712991
LT
581 while (c == ' ' || c == '\t')
582 c = get_next_char();
583
584 value = NULL;
585 if (c != '\n') {
586 if (c != '=')
587 return -1;
588 value = parse_value();
589 if (!value)
590 return -1;
591 }
b3b3f60b
MM
592 /*
593 * We already consumed the \n, but we need linenr to point to
594 * the line we just parsed during the call to fn to get
595 * accurate line number in error messages.
596 */
597 cf->linenr--;
598 ret = fn(name->buf, value, data);
e2e14251
JS
599 if (ret >= 0)
600 cf->linenr++;
b3b3f60b 601 return ret;
17712991
LT
602}
603
0971e992 604static int get_extended_base_var(struct strbuf *name, int c)
d14f7764
LT
605{
606 do {
607 if (c == '\n')
4b340593 608 goto error_incomplete_line;
d14f7764
LT
609 c = get_next_char();
610 } while (isspace(c));
611
612 /* We require the format to be '[base "extension"]' */
613 if (c != '"')
614 return -1;
0971e992 615 strbuf_addch(name, '.');
d14f7764
LT
616
617 for (;;) {
618 int c = get_next_char();
619 if (c == '\n')
4b340593 620 goto error_incomplete_line;
d14f7764
LT
621 if (c == '"')
622 break;
623 if (c == '\\') {
624 c = get_next_char();
625 if (c == '\n')
4b340593 626 goto error_incomplete_line;
d14f7764 627 }
0971e992 628 strbuf_addch(name, c);
d14f7764
LT
629 }
630
631 /* Final ']' */
632 if (get_next_char() != ']')
633 return -1;
0971e992 634 return 0;
4b340593
MS
635error_incomplete_line:
636 cf->linenr--;
637 return -1;
d14f7764
LT
638}
639
0971e992 640static int get_base_var(struct strbuf *name)
17712991 641{
17712991
LT
642 for (;;) {
643 int c = get_next_char();
924aaf3e 644 if (cf->eof)
17712991
LT
645 return -1;
646 if (c == ']')
0971e992 647 return 0;
d14f7764 648 if (isspace(c))
0971e992 649 return get_extended_base_var(name, c);
38c5afa8 650 if (!iskeychar(c) && c != '.')
17712991 651 return -1;
0971e992 652 strbuf_addch(name, tolower(c));
17712991
LT
653 }
654}
655
4d8dd149 656static int git_parse_source(config_fn_t fn, void *data)
17712991
LT
657{
658 int comment = 0;
659 int baselen = 0;
0971e992 660 struct strbuf *var = &cf->var;
1b8132d9
VA
661 int error_return = 0;
662 char *error_msg = NULL;
17712991 663
de056402 664 /* U+FEFF Byte Order Mark in UTF8 */
599446dc 665 const char *bomptr = utf8_bom;
de056402 666
17712991
LT
667 for (;;) {
668 int c = get_next_char();
de056402
PB
669 if (bomptr && *bomptr) {
670 /* We are at the file beginning; skip UTF8-encoded BOM
671 * if present. Sane editors won't put this in on their
672 * own, but e.g. Windows Notepad will do it happily. */
599446dc 673 if (c == (*bomptr & 0377)) {
de056402
PB
674 bomptr++;
675 continue;
676 } else {
677 /* Do not tolerate partial BOM. */
678 if (bomptr != utf8_bom)
679 break;
680 /* No BOM at file beginning. Cool. */
681 bomptr = NULL;
682 }
683 }
17712991 684 if (c == '\n') {
924aaf3e 685 if (cf->eof)
17712991
LT
686 return 0;
687 comment = 0;
688 continue;
689 }
690 if (comment || isspace(c))
691 continue;
692 if (c == '#' || c == ';') {
693 comment = 1;
694 continue;
695 }
696 if (c == '[') {
0971e992
BW
697 /* Reset prior to determining a new stem */
698 strbuf_reset(var);
699 if (get_base_var(var) < 0 || var->len < 1)
17712991 700 break;
0971e992
BW
701 strbuf_addch(var, '.');
702 baselen = var->len;
17712991
LT
703 continue;
704 }
705 if (!isalpha(c))
706 break;
0971e992
BW
707 /*
708 * Truncate the var name back to the section header
709 * stem prior to grabbing the suffix part of the name
710 * and the value.
711 */
712 strbuf_setlen(var, baselen);
713 strbuf_addch(var, tolower(c));
714 if (get_value(fn, data, var) < 0)
17712991
LT
715 break;
716 }
1b8132d9
VA
717
718 switch (cf->origin_type) {
719 case CONFIG_ORIGIN_BLOB:
720 error_msg = xstrfmt(_("bad config line %d in blob %s"),
721 cf->linenr, cf->name);
722 break;
723 case CONFIG_ORIGIN_FILE:
724 error_msg = xstrfmt(_("bad config line %d in file %s"),
725 cf->linenr, cf->name);
726 break;
727 case CONFIG_ORIGIN_STDIN:
728 error_msg = xstrfmt(_("bad config line %d in standard input"),
729 cf->linenr);
730 break;
731 case CONFIG_ORIGIN_SUBMODULE_BLOB:
732 error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
733 cf->linenr, cf->name);
734 break;
735 case CONFIG_ORIGIN_CMDLINE:
736 error_msg = xstrfmt(_("bad config line %d in command line %s"),
737 cf->linenr, cf->name);
738 break;
739 default:
740 error_msg = xstrfmt(_("bad config line %d in %s"),
741 cf->linenr, cf->name);
742 }
743
b2dc0945 744 if (cf->die_on_error)
1b8132d9 745 die("%s", error_msg);
b2dc0945 746 else
1b8132d9
VA
747 error_return = error("%s", error_msg);
748
749 free(error_msg);
750 return error_return;
17712991
LT
751}
752
ebaa1bd4 753static int parse_unit_factor(const char *end, uintmax_t *val)
0b87b6e0
BD
754{
755 if (!*end)
756 return 1;
c8deb5a1
SP
757 else if (!strcasecmp(end, "k")) {
758 *val *= 1024;
759 return 1;
760 }
761 else if (!strcasecmp(end, "m")) {
762 *val *= 1024 * 1024;
763 return 1;
764 }
765 else if (!strcasecmp(end, "g")) {
766 *val *= 1024 * 1024 * 1024;
767 return 1;
768 }
769 return 0;
0b87b6e0
BD
770}
771
7192777d 772static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
0b87b6e0
BD
773{
774 if (value && *value) {
775 char *end;
ebaa1bd4
NA
776 intmax_t val;
777 uintmax_t uval;
778 uintmax_t factor = 1;
779
780 errno = 0;
781 val = strtoimax(value, &end, 0);
782 if (errno == ERANGE)
783 return 0;
33fdd77e
JK
784 if (!parse_unit_factor(end, &factor)) {
785 errno = EINVAL;
c8deb5a1 786 return 0;
33fdd77e 787 }
83915ba5 788 uval = labs(val);
ebaa1bd4 789 uval *= factor;
83915ba5 790 if (uval > max || labs(val) > uval) {
33fdd77e 791 errno = ERANGE;
ebaa1bd4 792 return 0;
33fdd77e 793 }
ebaa1bd4
NA
794 val *= factor;
795 *ret = val;
0b87b6e0
BD
796 return 1;
797 }
33fdd77e 798 errno = EINVAL;
0b87b6e0
BD
799 return 0;
800}
801
0b4dc661 802static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
17712991
LT
803{
804 if (value && *value) {
805 char *end;
ebaa1bd4
NA
806 uintmax_t val;
807 uintmax_t oldval;
808
809 errno = 0;
810 val = strtoumax(value, &end, 0);
811 if (errno == ERANGE)
812 return 0;
813 oldval = val;
33fdd77e
JK
814 if (!parse_unit_factor(end, &val)) {
815 errno = EINVAL;
c8deb5a1 816 return 0;
33fdd77e
JK
817 }
818 if (val > max || oldval > val) {
819 errno = ERANGE;
ebaa1bd4 820 return 0;
33fdd77e 821 }
c8deb5a1 822 *ret = val;
0b87b6e0 823 return 1;
17712991 824 }
33fdd77e 825 errno = EINVAL;
0b87b6e0
BD
826 return 0;
827}
828
42d194e9 829static int git_parse_int(const char *value, int *ret)
c1867cea 830{
7192777d 831 intmax_t tmp;
42d194e9 832 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
7192777d
JK
833 return 0;
834 *ret = tmp;
835 return 1;
836}
837
00160242
JK
838static int git_parse_int64(const char *value, int64_t *ret)
839{
840 intmax_t tmp;
841 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
842 return 0;
843 *ret = tmp;
844 return 1;
845}
846
7192777d
JK
847int git_parse_ulong(const char *value, unsigned long *ret)
848{
849 uintmax_t tmp;
850 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
851 return 0;
852 *ret = tmp;
853 return 1;
854}
855
37ee680d
DT
856static int git_parse_ssize_t(const char *value, ssize_t *ret)
857{
858 intmax_t tmp;
859 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
860 return 0;
861 *ret = tmp;
862 return 1;
863}
864
06bdc23b 865NORETURN
2f666581 866static void die_bad_number(const char *name, const char *value)
c1867cea 867{
078fe305
JNA
868 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
869
2f666581
JK
870 if (!value)
871 value = "";
872
1b8132d9 873 if (!(cf && cf->name))
078fe305
JNA
874 die(_("bad numeric config value '%s' for '%s': %s"),
875 value, name, error_type);
1b8132d9
VA
876
877 switch (cf->origin_type) {
878 case CONFIG_ORIGIN_BLOB:
078fe305
JNA
879 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
880 value, name, cf->name, error_type);
1b8132d9 881 case CONFIG_ORIGIN_FILE:
078fe305
JNA
882 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
883 value, name, cf->name, error_type);
1b8132d9 884 case CONFIG_ORIGIN_STDIN:
078fe305
JNA
885 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
886 value, name, error_type);
1b8132d9 887 case CONFIG_ORIGIN_SUBMODULE_BLOB:
078fe305
JNA
888 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
889 value, name, cf->name, error_type);
1b8132d9 890 case CONFIG_ORIGIN_CMDLINE:
078fe305
JNA
891 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
892 value, name, cf->name, error_type);
1b8132d9 893 default:
078fe305
JNA
894 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
895 value, name, cf->name, error_type);
1b8132d9 896 }
c1867cea
JK
897}
898
0b87b6e0
BD
899int git_config_int(const char *name, const char *value)
900{
42d194e9
JK
901 int ret;
902 if (!git_parse_int(value, &ret))
2f666581 903 die_bad_number(name, value);
0b87b6e0
BD
904 return ret;
905}
906
00160242
JK
907int64_t git_config_int64(const char *name, const char *value)
908{
909 int64_t ret;
910 if (!git_parse_int64(value, &ret))
911 die_bad_number(name, value);
0b87b6e0
BD
912 return ret;
913}
914
915unsigned long git_config_ulong(const char *name, const char *value)
916{
917 unsigned long ret;
918 if (!git_parse_ulong(value, &ret))
2f666581 919 die_bad_number(name, value);
0b87b6e0 920 return ret;
17712991
LT
921}
922
37ee680d
DT
923ssize_t git_config_ssize_t(const char *name, const char *value)
924{
925 ssize_t ret;
926 if (!git_parse_ssize_t(value, &ret))
927 die_bad_number(name, value);
928 return ret;
929}
930
9be04d64 931static int git_parse_maybe_bool_text(const char *value)
17712991
LT
932{
933 if (!value)
934 return 1;
935 if (!*value)
936 return 0;
8420ccd8
JH
937 if (!strcasecmp(value, "true")
938 || !strcasecmp(value, "yes")
939 || !strcasecmp(value, "on"))
17712991 940 return 1;
8420ccd8
JH
941 if (!strcasecmp(value, "false")
942 || !strcasecmp(value, "no")
943 || !strcasecmp(value, "off"))
17712991 944 return 0;
8420ccd8
JH
945 return -1;
946}
947
9be04d64 948int git_parse_maybe_bool(const char *value)
b2be2f6a 949{
9be04d64 950 int v = git_parse_maybe_bool_text(value);
b2be2f6a
JK
951 if (0 <= v)
952 return v;
42d194e9 953 if (git_parse_int(value, &v))
db6195ef 954 return !!v;
b2be2f6a
JK
955 return -1;
956}
957
8420ccd8
JH
958int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
959{
9be04d64 960 int v = git_parse_maybe_bool_text(value);
8420ccd8
JH
961 if (0 <= v) {
962 *is_bool = 1;
963 return v;
964 }
a53f2ec6 965 *is_bool = 0;
c35b0b58 966 return git_config_int(name, value);
17712991
LT
967}
968
a53f2ec6
JH
969int git_config_bool(const char *name, const char *value)
970{
971 int discard;
c35b0b58 972 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
973}
974
ea5105a5
CC
975int git_config_string(const char **dest, const char *var, const char *value)
976{
977 if (!value)
978 return config_error_nonbool(var);
979 *dest = xstrdup(value);
980 return 0;
981}
982
395de250
MM
983int git_config_pathname(const char **dest, const char *var, const char *value)
984{
985 if (!value)
986 return config_error_nonbool(var);
4aad2f16 987 *dest = expand_user_path(value, 0);
395de250 988 if (!*dest)
8262aaa2 989 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
990 return 0;
991}
992
806e2ad7 993static int git_default_core_config(const char *var, const char *value)
17712991
LT
994{
995 /* This needs a better name */
996 if (!strcmp(var, "core.filemode")) {
997 trust_executable_bit = git_config_bool(var, value);
998 return 0;
999 }
1ce4790b
AR
1000 if (!strcmp(var, "core.trustctime")) {
1001 trust_ctime = git_config_bool(var, value);
1002 return 0;
1003 }
c1b5d738 1004 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
1005 if (!strcasecmp(value, "default"))
1006 check_stat = 1;
1007 else if (!strcasecmp(value, "minimal"))
1008 check_stat = 0;
1009 }
17712991 1010
9378c161
JH
1011 if (!strcmp(var, "core.quotepath")) {
1012 quote_path_fully = git_config_bool(var, value);
1013 return 0;
1014 }
1015
78a8d641
JS
1016 if (!strcmp(var, "core.symlinks")) {
1017 has_symlinks = git_config_bool(var, value);
1018 return 0;
1019 }
1020
0a9b88b7
LT
1021 if (!strcmp(var, "core.ignorecase")) {
1022 ignore_case = git_config_bool(var, value);
1023 return 0;
1024 }
1025
64589a03
JH
1026 if (!strcmp(var, "core.attributesfile"))
1027 return git_config_pathname(&git_attributes_file, var, value);
1028
867ad08a
ÆAB
1029 if (!strcmp(var, "core.hookspath"))
1030 return git_config_pathname(&git_hooks_path, var, value);
1031
7d1864ce
JH
1032 if (!strcmp(var, "core.bare")) {
1033 is_bare_repository_cfg = git_config_bool(var, value);
1034 return 0;
1035 }
1036
5f73076c
JH
1037 if (!strcmp(var, "core.ignorestat")) {
1038 assume_unchanged = git_config_bool(var, value);
1039 return 0;
1040 }
1041
e388c738
JH
1042 if (!strcmp(var, "core.prefersymlinkrefs")) {
1043 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
1044 return 0;
1045 }
1046
6de08ae6 1047 if (!strcmp(var, "core.logallrefupdates")) {
341fb286
CW
1048 if (value && !strcasecmp(value, "always"))
1049 log_all_ref_updates = LOG_REFS_ALWAYS;
1050 else if (git_config_bool(var, value))
1051 log_all_ref_updates = LOG_REFS_NORMAL;
1052 else
1053 log_all_ref_updates = LOG_REFS_NONE;
6de08ae6
SP
1054 return 0;
1055 }
1056
2f8acdb3
JH
1057 if (!strcmp(var, "core.warnambiguousrefs")) {
1058 warn_ambiguous_refs = git_config_bool(var, value);
1059 return 0;
1060 }
1061
a71f09fe 1062 if (!strcmp(var, "core.abbrev")) {
48d5014d
JH
1063 if (!value)
1064 return config_error_nonbool(var);
1065 if (!strcasecmp(value, "auto"))
1066 default_abbrev = -1;
1067 else {
1068 int abbrev = git_config_int(var, value);
1069 if (abbrev < minimum_abbrev || abbrev > 40)
1070 return error("abbrev length out of range: %d", abbrev);
1071 default_abbrev = abbrev;
1072 }
dce96489
LT
1073 return 0;
1074 }
1075
5b33cb1f
JK
1076 if (!strcmp(var, "core.disambiguate"))
1077 return set_disambiguate_hint_config(var, value);
1078
960ccca6 1079 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
1080 int level = git_config_int(var, value);
1081 if (level == -1)
1082 level = Z_DEFAULT_COMPRESSION;
1083 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1084 die(_("bad zlib compression level %d"), level);
12f6c308 1085 zlib_compression_level = level;
960ccca6
DH
1086 zlib_compression_seen = 1;
1087 return 0;
1088 }
1089
1090 if (!strcmp(var, "core.compression")) {
1091 int level = git_config_int(var, value);
1092 if (level == -1)
1093 level = Z_DEFAULT_COMPRESSION;
1094 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1095 die(_("bad zlib compression level %d"), level);
960ccca6
DH
1096 core_compression_level = level;
1097 core_compression_seen = 1;
1098 if (!zlib_compression_seen)
1099 zlib_compression_level = level;
8de7eeb5
JH
1100 if (!pack_compression_seen)
1101 pack_compression_level = level;
12f6c308
JBH
1102 return 0;
1103 }
1104
60bb8b14 1105 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 1106 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 1107 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
1108
1109 /* This value must be multiple of (pagesize * 2) */
1110 packed_git_window_size /= pgsz_x2;
1111 if (packed_git_window_size < 1)
1112 packed_git_window_size = 1;
1113 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
1114 return 0;
1115 }
1116
15366280 1117 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 1118 big_file_threshold = git_config_ulong(var, value);
15366280
JH
1119 return 0;
1120 }
1121
77ccc5bb 1122 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 1123 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
1124 return 0;
1125 }
1126
18bdec11 1127 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 1128 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
1129 return 0;
1130 }
1131
6c510bee 1132 if (!strcmp(var, "core.autocrlf")) {
d7f46334 1133 if (value && !strcasecmp(value, "input")) {
fd6cce9e 1134 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
1135 return 0;
1136 }
6c510bee
LT
1137 auto_crlf = git_config_bool(var, value);
1138 return 0;
1139 }
1140
21e5ad50
SP
1141 if (!strcmp(var, "core.safecrlf")) {
1142 if (value && !strcasecmp(value, "warn")) {
1143 safe_crlf = SAFE_CRLF_WARN;
1144 return 0;
1145 }
1146 safe_crlf = git_config_bool(var, value);
1147 return 0;
1148 }
1149
942e7747
EB
1150 if (!strcmp(var, "core.eol")) {
1151 if (value && !strcasecmp(value, "lf"))
ec70f52f 1152 core_eol = EOL_LF;
942e7747 1153 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 1154 core_eol = EOL_CRLF;
942e7747 1155 else if (value && !strcasecmp(value, "native"))
ec70f52f 1156 core_eol = EOL_NATIVE;
942e7747 1157 else
ec70f52f 1158 core_eol = EOL_UNSET;
942e7747
EB
1159 return 0;
1160 }
1161
a97a7468
JS
1162 if (!strcmp(var, "core.notesref")) {
1163 notes_ref_name = xstrdup(value);
1164 return 0;
1165 }
1166
806e2ad7
LT
1167 if (!strcmp(var, "core.editor"))
1168 return git_config_string(&editor_program, var, value);
1169
eff80a9f 1170 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
1171 if (!value)
1172 return config_error_nonbool(var);
ad524f83 1173 else if (!strcasecmp(value, "auto"))
84c9dc2c 1174 auto_comment_line_char = 1;
ad524f83 1175 else if (value[0] && !value[1]) {
649409b7 1176 comment_line_char = value[0];
84c9dc2c 1177 auto_comment_line_char = 0;
50b54fd7
NTND
1178 } else
1179 return error("core.commentChar should only be one character");
1180 return 0;
eff80a9f
JH
1181 }
1182
d3e7da89
AK
1183 if (!strcmp(var, "core.askpass"))
1184 return git_config_string(&askpass_program, var, value);
1185
806e2ad7 1186 if (!strcmp(var, "core.excludesfile"))
395de250 1187 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
1188
1189 if (!strcmp(var, "core.whitespace")) {
1190 if (!value)
1191 return config_error_nonbool(var);
1192 whitespace_rule_cfg = parse_whitespace_rule(value);
1193 return 0;
1194 }
1195
aafe9fba
LT
1196 if (!strcmp(var, "core.fsyncobjectfiles")) {
1197 fsync_object_files = git_config_bool(var, value);
1198 return 0;
1199 }
1200
671c9b7e
LT
1201 if (!strcmp(var, "core.preloadindex")) {
1202 core_preload_index = git_config_bool(var, value);
1203 return 0;
1204 }
1205
348df166
JS
1206 if (!strcmp(var, "core.createobject")) {
1207 if (!strcmp(value, "rename"))
1208 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1209 else if (!strcmp(value, "link"))
1210 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1211 else
8262aaa2 1212 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
1213 return 0;
1214 }
1215
08aefc9e
NTND
1216 if (!strcmp(var, "core.sparsecheckout")) {
1217 core_apply_sparse_checkout = git_config_bool(var, value);
1218 return 0;
1219 }
1220
76759c7d
TB
1221 if (!strcmp(var, "core.precomposeunicode")) {
1222 precomposed_unicode = git_config_bool(var, value);
1223 return 0;
1224 }
1225
a42643aa
JK
1226 if (!strcmp(var, "core.protecthfs")) {
1227 protect_hfs = git_config_bool(var, value);
1228 return 0;
1229 }
1230
2b4c6efc
JS
1231 if (!strcmp(var, "core.protectntfs")) {
1232 protect_ntfs = git_config_bool(var, value);
1233 return 0;
76759c7d
TB
1234 }
1235
f30afdab
JS
1236 if (!strcmp(var, "core.hidedotfiles")) {
1237 if (value && !strcasecmp(value, "dotgitonly"))
1238 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
1239 else
1240 hide_dotfiles = git_config_bool(var, value);
1241 return 0;
1242 }
1243
806e2ad7
LT
1244 /* Add other config variables here and to Documentation/config.txt. */
1245 return 0;
1246}
1247
1141f492 1248static int git_default_i18n_config(const char *var, const char *value)
d1364529 1249{
ea5105a5
CC
1250 if (!strcmp(var, "i18n.commitencoding"))
1251 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 1252
ea5105a5
CC
1253 if (!strcmp(var, "i18n.logoutputencoding"))
1254 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 1255
1141f492
LT
1256 /* Add other config variables here and to Documentation/config.txt. */
1257 return 0;
1258}
039bc64e 1259
1141f492
LT
1260static int git_default_branch_config(const char *var, const char *value)
1261{
9ed36cfa
JS
1262 if (!strcmp(var, "branch.autosetupmerge")) {
1263 if (value && !strcasecmp(value, "always")) {
1264 git_branch_track = BRANCH_TRACK_ALWAYS;
1265 return 0;
1266 }
1267 git_branch_track = git_config_bool(var, value);
1268 return 0;
1269 }
c998ae9b
DS
1270 if (!strcmp(var, "branch.autosetuprebase")) {
1271 if (!value)
1272 return config_error_nonbool(var);
1273 else if (!strcmp(value, "never"))
1274 autorebase = AUTOREBASE_NEVER;
1275 else if (!strcmp(value, "local"))
1276 autorebase = AUTOREBASE_LOCAL;
1277 else if (!strcmp(value, "remote"))
1278 autorebase = AUTOREBASE_REMOTE;
1279 else if (!strcmp(value, "always"))
1280 autorebase = AUTOREBASE_ALWAYS;
1281 else
8c3ca351 1282 return error("malformed value for %s", var);
c998ae9b
DS
1283 return 0;
1284 }
a9cc857a 1285
1ab661dd 1286 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
1287 return 0;
1288}
1289
52153747
FAG
1290static int git_default_push_config(const char *var, const char *value)
1291{
1292 if (!strcmp(var, "push.default")) {
1293 if (!value)
1294 return config_error_nonbool(var);
1295 else if (!strcmp(value, "nothing"))
1296 push_default = PUSH_DEFAULT_NOTHING;
1297 else if (!strcmp(value, "matching"))
1298 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
1299 else if (!strcmp(value, "simple"))
1300 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
1301 else if (!strcmp(value, "upstream"))
1302 push_default = PUSH_DEFAULT_UPSTREAM;
1303 else if (!strcmp(value, "tracking")) /* deprecated */
1304 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
1305 else if (!strcmp(value, "current"))
1306 push_default = PUSH_DEFAULT_CURRENT;
1307 else {
8c3ca351 1308 error("malformed value for %s: %s", var, value);
b55e6775
MM
1309 return error("Must be one of nothing, matching, simple, "
1310 "upstream or current.");
52153747
FAG
1311 }
1312 return 0;
1313 }
1314
1315 /* Add other config variables here and to Documentation/config.txt. */
1316 return 0;
1317}
1318
d551a488
MSO
1319static int git_default_mailmap_config(const char *var, const char *value)
1320{
1321 if (!strcmp(var, "mailmap.file"))
9352fd57 1322 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
1323 if (!strcmp(var, "mailmap.blob"))
1324 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
1325
1326 /* Add other config variables here and to Documentation/config.txt. */
1327 return 0;
1328}
1329
1141f492
LT
1330int git_default_config(const char *var, const char *value, void *dummy)
1331{
59556548 1332 if (starts_with(var, "core."))
1141f492
LT
1333 return git_default_core_config(var, value);
1334
59556548 1335 if (starts_with(var, "user."))
9597921b 1336 return git_ident_config(var, value, dummy);
1141f492 1337
59556548 1338 if (starts_with(var, "i18n."))
1141f492
LT
1339 return git_default_i18n_config(var, value);
1340
59556548 1341 if (starts_with(var, "branch."))
1141f492
LT
1342 return git_default_branch_config(var, value);
1343
59556548 1344 if (starts_with(var, "push."))
52153747
FAG
1345 return git_default_push_config(var, value);
1346
59556548 1347 if (starts_with(var, "mailmap."))
d551a488
MSO
1348 return git_default_mailmap_config(var, value);
1349
59556548 1350 if (starts_with(var, "advice."))
75194438
JK
1351 return git_default_advice_config(var, value);
1352
1141f492
LT
1353 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1354 pager_use_color = git_config_bool(var,value);
1355 return 0;
1356 }
1357
568508e7
JH
1358 if (!strcmp(var, "pack.packsizelimit")) {
1359 pack_size_limit_cfg = git_config_ulong(var, value);
1360 return 0;
1361 }
8de7eeb5
JH
1362
1363 if (!strcmp(var, "pack.compression")) {
1364 int level = git_config_int(var, value);
1365 if (level == -1)
1366 level = Z_DEFAULT_COMPRESSION;
1367 else if (level < 0 || level > Z_BEST_COMPRESSION)
1368 die(_("bad pack compression level %d"), level);
1369 pack_compression_level = level;
1370 pack_compression_seen = 1;
1371 return 0;
1372 }
1373
1141f492
LT
1374 /* Add other config variables here and to Documentation/config.txt. */
1375 return 0;
1376}
1377
ca4b5de2 1378/*
b2dc0945 1379 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1380 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1381 * this function.
1382 */
4d8dd149 1383static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
ca4b5de2
HV
1384{
1385 int ret;
1386
1387 /* push config-file parsing state stack */
1388 top->prev = cf;
1389 top->linenr = 1;
1390 top->eof = 0;
1391 strbuf_init(&top->value, 1024);
1392 strbuf_init(&top->var, 1024);
1393 cf = top;
1394
4d8dd149 1395 ret = git_parse_source(fn, data);
ca4b5de2
HV
1396
1397 /* pop config-file parsing state stack */
1398 strbuf_release(&top->value);
1399 strbuf_release(&top->var);
1400 cf = top->prev;
1401
1402 return ret;
1403}
1404
3caec73b 1405static int do_config_from_file(config_fn_t fn,
1b8132d9
VA
1406 const enum config_origin_type origin_type,
1407 const char *name, const char *path, FILE *f,
473166b9 1408 void *data)
17712991 1409{
3caec73b 1410 struct config_source top;
17712991 1411
3caec73b 1412 top.u.file = f;
473166b9 1413 top.origin_type = origin_type;
3caec73b
KS
1414 top.name = name;
1415 top.path = path;
1416 top.die_on_error = 1;
1417 top.do_fgetc = config_file_fgetc;
1418 top.do_ungetc = config_file_ungetc;
1419 top.do_ftell = config_file_ftell;
924aaf3e 1420
3caec73b
KS
1421 return do_config_from(&top, fn, data);
1422}
924aaf3e 1423
3caec73b
KS
1424static int git_config_from_stdin(config_fn_t fn, void *data)
1425{
1b8132d9 1426 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin, data);
3caec73b
KS
1427}
1428
1429int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1430{
1431 int ret = -1;
1432 FILE *f;
924aaf3e 1433
e9d983f1 1434 f = fopen_or_warn(filename, "r");
3caec73b 1435 if (f) {
260d408e 1436 flockfile(f);
1b8132d9 1437 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename, filename, f, data);
260d408e 1438 funlockfile(f);
17712991
LT
1439 fclose(f);
1440 }
1441 return ret;
1442}
10bea152 1443
1b8132d9 1444int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_type,
473166b9 1445 const char *name, const char *buf, size_t len, void *data)
1bc88819
HV
1446{
1447 struct config_source top;
1448
1449 top.u.buf.buf = buf;
1450 top.u.buf.len = len;
1451 top.u.buf.pos = 0;
473166b9 1452 top.origin_type = origin_type;
1bc88819 1453 top.name = name;
d14d4244 1454 top.path = NULL;
b2dc0945 1455 top.die_on_error = 0;
49d6cfa5
JK
1456 top.do_fgetc = config_buf_fgetc;
1457 top.do_ungetc = config_buf_ungetc;
1458 top.do_ftell = config_buf_ftell;
1bc88819
HV
1459
1460 return do_config_from(&top, fn, data);
1461}
1462
cd73de47 1463int git_config_from_blob_oid(config_fn_t fn,
9ebf689a 1464 const char *name,
cd73de47 1465 const struct object_id *oid,
9ebf689a 1466 void *data)
1bc88819
HV
1467{
1468 enum object_type type;
1469 char *buf;
1470 unsigned long size;
1471 int ret;
1472
cd73de47 1473 buf = read_sha1_file(oid->hash, &type, &size);
1bc88819
HV
1474 if (!buf)
1475 return error("unable to load config blob object '%s'", name);
1476 if (type != OBJ_BLOB) {
1477 free(buf);
1478 return error("reference '%s' does not point to a blob", name);
1479 }
1480
1b8132d9 1481 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size, data);
1bc88819
HV
1482 free(buf);
1483
1484 return ret;
1485}
1486
1487static int git_config_from_blob_ref(config_fn_t fn,
1488 const char *name,
1489 void *data)
1490{
cd73de47 1491 struct object_id oid;
1bc88819 1492
cd73de47 1493 if (get_oid(name, &oid) < 0)
1bc88819 1494 return error("unable to resolve config blob '%s'", name);
cd73de47 1495 return git_config_from_blob_oid(fn, name, &oid, data);
1bc88819
HV
1496}
1497
506b17b1
JS
1498const char *git_etc_gitconfig(void)
1499{
7f0e39fa 1500 static const char *system_wide;
2de9de5e
SP
1501 if (!system_wide)
1502 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1503 return system_wide;
506b17b1
JS
1504}
1505
23b0c478
SP
1506/*
1507 * Parse environment variable 'k' as a boolean (in various
1508 * possible spellings); if missing, use the default value 'def'.
1509 */
0ef37164 1510int git_env_bool(const char *k, int def)
ab88c363
JK
1511{
1512 const char *v = getenv(k);
1513 return v ? git_config_bool(k, v) : def;
1514}
1515
23b0c478
SP
1516/*
1517 * Parse environment variable 'k' as ulong with possibly a unit
1518 * suffix; if missing, use the default value 'val'.
1519 */
1520unsigned long git_env_ulong(const char *k, unsigned long val)
1521{
1522 const char *v = getenv(k);
1523 if (v && !git_parse_ulong(v, &val))
1524 die("failed to parse %s", k);
1525 return val;
1526}
1527
ab88c363
JK
1528int git_config_system(void)
1529{
1530 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1531}
1532
e145a0bc
NTND
1533static int do_git_config_sequence(const struct config_options *opts,
1534 config_fn_t fn, void *data)
4f629539 1535{
c72ee44b 1536 int ret = 0;
509adc33 1537 char *xdg_config = xdg_config_home("config");
4aad2f16 1538 char *user_config = expand_user_path("~/.gitconfig", 0);
e145a0bc
NTND
1539 char *repo_config;
1540
a577fb5f
BW
1541 if (opts->commondir)
1542 repo_config = mkpathdup("%s/config", opts->commondir);
e145a0bc
NTND
1543 else
1544 repo_config = NULL;
5f1a63e0 1545
9acc5911 1546 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
c72ee44b 1547 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
dc871831
DB
1548 ret += git_config_from_file(fn, git_etc_gitconfig(),
1549 data);
5f1a63e0 1550
9acc5911 1551 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
c72ee44b 1552 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1553 ret += git_config_from_file(fn, xdg_config, data);
21cf3227 1554
c72ee44b 1555 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1556 ret += git_config_from_file(fn, user_config, data);
5f1a63e0 1557
9acc5911 1558 current_parsing_scope = CONFIG_SCOPE_REPO;
c72ee44b 1559 if (repo_config && !access_or_die(repo_config, R_OK, 0))
aa387407 1560 ret += git_config_from_file(fn, repo_config, data);
8b1fa778 1561
9acc5911 1562 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
c72ee44b 1563 if (git_config_from_parameters(fn, data) < 0)
8262aaa2 1564 die(_("unable to parse command-line config"));
8b1fa778 1565
9acc5911 1566 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
21cf3227
HKNN
1567 free(xdg_config);
1568 free(user_config);
80181868 1569 free(repo_config);
c72ee44b 1570 return ret;
4f629539
JH
1571}
1572
dc8441fd
BW
1573int config_with_options(config_fn_t fn, void *data,
1574 struct git_config_source *config_source,
1575 const struct config_options *opts)
dbdf5854 1576{
9b25a0b5
JK
1577 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1578
c48f4b37 1579 if (opts->respect_includes) {
9b25a0b5
JK
1580 inc.fn = fn;
1581 inc.data = data;
c48f4b37 1582 inc.opts = opts;
9b25a0b5
JK
1583 fn = git_config_include;
1584 data = &inc;
1585 }
dbdf5854 1586
c9b5e2a5
JK
1587 /*
1588 * If we have a specific filename, use it. Otherwise, follow the
1589 * regular lookup sequence.
1590 */
3caec73b
KS
1591 if (config_source && config_source->use_stdin)
1592 return git_config_from_stdin(fn, data);
1593 else if (config_source && config_source->file)
c8985ce0
KS
1594 return git_config_from_file(fn, config_source->file, data);
1595 else if (config_source && config_source->blob)
1596 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1597
e145a0bc 1598 return do_git_config_sequence(opts, fn, data);
dbdf5854
NTND
1599}
1600
155ef25f 1601static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1602{
155ef25f
TA
1603 int i, value_index;
1604 struct string_list *values;
1605 struct config_set_element *entry;
1606 struct configset_list *list = &cs->list;
155ef25f
TA
1607
1608 for (i = 0; i < list->nr; i++) {
1609 entry = list->items[i].e;
1610 value_index = list->items[i].value_index;
1611 values = &entry->value_list;
0d44a2da
JK
1612
1613 current_config_kvi = values->items[value_index].util;
1614
1615 if (fn(entry->key, values->items[value_index].string, data) < 0)
1616 git_die_config_linenr(entry->key,
1617 current_config_kvi->filename,
1618 current_config_kvi->linenr);
1619
1620 current_config_kvi = NULL;
155ef25f
TA
1621 }
1622}
1623
0654aa57
JS
1624void read_early_config(config_fn_t cb, void *data)
1625{
c48f4b37 1626 struct config_options opts = {0};
d3fb71b3
BW
1627 struct strbuf commondir = STRBUF_INIT;
1628 struct strbuf gitdir = STRBUF_INIT;
1a27409a 1629
c48f4b37 1630 opts.respect_includes = 1;
0654aa57 1631
a577fb5f
BW
1632 if (have_git_dir()) {
1633 opts.commondir = get_git_common_dir();
2185fde5 1634 opts.git_dir = get_git_dir();
0654aa57 1635 /*
1a27409a
JS
1636 * When setup_git_directory() was not yet asked to discover the
1637 * GIT_DIR, we ask discover_git_directory() to figure out whether there
1638 * is any repository config we should use (but unlike
1639 * setup_git_directory_gently(), no global state is changed, most
1640 * notably, the current working directory is still the same after the
1641 * call).
0654aa57 1642 */
a577fb5f
BW
1643 } else if (!discover_git_directory(&commondir, &gitdir)) {
1644 opts.commondir = commondir.buf;
d3fb71b3 1645 opts.git_dir = gitdir.buf;
a577fb5f 1646 }
2185fde5 1647
dc8441fd 1648 config_with_options(cb, data, NULL, &opts);
0654aa57 1649
d3fb71b3
BW
1650 strbuf_release(&commondir);
1651 strbuf_release(&gitdir);
0654aa57
JS
1652}
1653
3c8687a7
TA
1654static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1655{
1656 struct config_set_element k;
1657 struct config_set_element *found_entry;
1658 char *normalized_key;
3c8687a7
TA
1659 /*
1660 * `key` may come from the user, so normalize it before using it
1661 * for querying entries from the hashmap.
1662 */
270cd9ea 1663 if (git_config_parse_key(key, &normalized_key, NULL))
3c8687a7
TA
1664 return NULL;
1665
1666 hashmap_entry_init(&k, strhash(normalized_key));
1667 k.key = normalized_key;
1668 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1669 free(normalized_key);
1670 return found_entry;
1671}
1672
1673static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1674{
1675 struct config_set_element *e;
3df8fd62 1676 struct string_list_item *si;
155ef25f 1677 struct configset_list_item *l_item;
3df8fd62
TA
1678 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1679
3c8687a7
TA
1680 e = configset_find_element(cs, key);
1681 /*
1682 * Since the keys are being fed by git_config*() callback mechanism, they
1683 * are already normalized. So simply add them without any further munging.
1684 */
1685 if (!e) {
1686 e = xmalloc(sizeof(*e));
1687 hashmap_entry_init(e, strhash(key));
1688 e->key = xstrdup(key);
1689 string_list_init(&e->value_list, 1);
1690 hashmap_add(&cs->config_hash, e);
1691 }
8c53f071 1692 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1693
1694 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1695 l_item = &cs->list.items[cs->list.nr++];
1696 l_item->e = e;
1697 l_item->value_index = e->value_list.nr - 1;
1698
3258258f
JK
1699 if (!cf)
1700 die("BUG: configset_add_value has no source");
1701 if (cf->name) {
3df8fd62
TA
1702 kv_info->filename = strintern(cf->name);
1703 kv_info->linenr = cf->linenr;
1b8132d9 1704 kv_info->origin_type = cf->origin_type;
3df8fd62
TA
1705 } else {
1706 /* for values read from `git_config_from_parameters()` */
1707 kv_info->filename = NULL;
1708 kv_info->linenr = -1;
1b8132d9 1709 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
3df8fd62 1710 }
9acc5911 1711 kv_info->scope = current_parsing_scope;
3df8fd62 1712 si->util = kv_info;
3c8687a7
TA
1713
1714 return 0;
1715}
1716
7663cdc8 1717static int config_set_element_cmp(const void *unused_cmp_data,
77bdc097
SB
1718 const void *entry,
1719 const void *entry_or_key,
7663cdc8 1720 const void *unused_keydata)
3c8687a7 1721{
77bdc097
SB
1722 const struct config_set_element *e1 = entry;
1723 const struct config_set_element *e2 = entry_or_key;
1724
3c8687a7
TA
1725 return strcmp(e1->key, e2->key);
1726}
1727
1728void git_configset_init(struct config_set *cs)
1729{
77bdc097 1730 hashmap_init(&cs->config_hash, config_set_element_cmp, NULL, 0);
3c8687a7 1731 cs->hash_initialized = 1;
155ef25f
TA
1732 cs->list.nr = 0;
1733 cs->list.alloc = 0;
1734 cs->list.items = NULL;
3c8687a7
TA
1735}
1736
1737void git_configset_clear(struct config_set *cs)
1738{
1739 struct config_set_element *entry;
1740 struct hashmap_iter iter;
1741 if (!cs->hash_initialized)
1742 return;
1743
1744 hashmap_iter_init(&cs->config_hash, &iter);
1745 while ((entry = hashmap_iter_next(&iter))) {
1746 free(entry->key);
3df8fd62 1747 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1748 }
1749 hashmap_free(&cs->config_hash, 1);
1750 cs->hash_initialized = 0;
155ef25f
TA
1751 free(cs->list.items);
1752 cs->list.nr = 0;
1753 cs->list.alloc = 0;
1754 cs->list.items = NULL;
3c8687a7
TA
1755}
1756
1757static int config_set_callback(const char *key, const char *value, void *cb)
1758{
1759 struct config_set *cs = cb;
1760 configset_add_value(cs, key, value);
1761 return 0;
1762}
1763
1764int git_configset_add_file(struct config_set *cs, const char *filename)
1765{
1766 return git_config_from_file(config_set_callback, filename, cs);
1767}
1768
1769int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1770{
1771 const struct string_list *values = NULL;
1772 /*
1773 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1774 * queried key in the files of the configset, the value returned will be the last
1775 * value in the value list for that key.
1776 */
1777 values = git_configset_get_value_multi(cs, key);
1778
1779 if (!values)
1780 return 1;
1781 assert(values->nr > 0);
1782 *value = values->items[values->nr - 1].string;
1783 return 0;
1784}
1785
1786const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1787{
1788 struct config_set_element *e = configset_find_element(cs, key);
1789 return e ? &e->value_list : NULL;
1790}
1791
1792int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1793{
1794 const char *value;
1795 if (!git_configset_get_value(cs, key, &value))
1796 return git_config_string(dest, key, value);
1797 else
1798 return 1;
1799}
1800
1801int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1802{
1803 return git_configset_get_string_const(cs, key, (const char **)dest);
1804}
1805
1806int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1807{
1808 const char *value;
1809 if (!git_configset_get_value(cs, key, &value)) {
1810 *dest = git_config_int(key, value);
1811 return 0;
1812 } else
1813 return 1;
1814}
1815
1816int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1817{
1818 const char *value;
1819 if (!git_configset_get_value(cs, key, &value)) {
1820 *dest = git_config_ulong(key, value);
1821 return 0;
1822 } else
1823 return 1;
1824}
1825
1826int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1827{
1828 const char *value;
1829 if (!git_configset_get_value(cs, key, &value)) {
1830 *dest = git_config_bool(key, value);
1831 return 0;
1832 } else
1833 return 1;
1834}
1835
1836int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1837 int *is_bool, int *dest)
1838{
1839 const char *value;
1840 if (!git_configset_get_value(cs, key, &value)) {
1841 *dest = git_config_bool_or_int(key, value, is_bool);
1842 return 0;
1843 } else
1844 return 1;
1845}
1846
1847int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1848{
1849 const char *value;
1850 if (!git_configset_get_value(cs, key, &value)) {
89576613 1851 *dest = git_parse_maybe_bool(value);
3c8687a7
TA
1852 if (*dest == -1)
1853 return -1;
1854 return 0;
1855 } else
1856 return 1;
1857}
1858
1859int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1860{
1861 const char *value;
1862 if (!git_configset_get_value(cs, key, &value))
1863 return git_config_pathname(dest, key, value);
1864 else
1865 return 1;
1866}
1867
3b256228
BW
1868/* Functions use to read configuration from a repository */
1869static void repo_read_config(struct repository *repo)
3c8687a7 1870{
3b256228
BW
1871 struct config_options opts;
1872
1873 opts.respect_includes = 1;
1874 opts.commondir = repo->commondir;
1875 opts.git_dir = repo->gitdir;
1876
1877 if (!repo->config)
1878 repo->config = xcalloc(1, sizeof(struct config_set));
1879 else
1880 git_configset_clear(repo->config);
1881
1882 git_configset_init(repo->config);
1883
1884 if (config_with_options(config_set_callback, repo->config, NULL, &opts) < 0)
1885 /*
1886 * config_with_options() normally returns only
1887 * zero, as most errors are fatal, and
1888 * non-fatal potential errors are guarded by "if"
1889 * statements that are entered only when no error is
1890 * possible.
1891 *
1892 * If we ever encounter a non-fatal error, it means
1893 * something went really wrong and we should stop
1894 * immediately.
1895 */
1896 die(_("unknown error occurred while reading the configuration files"));
1897}
1898
1899static void git_config_check_init(struct repository *repo)
1900{
1901 if (repo->config && repo->config->hash_initialized)
3c8687a7 1902 return;
3b256228 1903 repo_read_config(repo);
3c8687a7
TA
1904}
1905
3b256228 1906static void repo_config_clear(struct repository *repo)
3c8687a7 1907{
3b256228 1908 if (!repo->config || !repo->config->hash_initialized)
3c8687a7 1909 return;
3b256228 1910 git_configset_clear(repo->config);
3c8687a7
TA
1911}
1912
3b256228 1913void repo_config(struct repository *repo, config_fn_t fn, void *data)
3c8687a7 1914{
3b256228
BW
1915 git_config_check_init(repo);
1916 configset_iter(repo->config, fn, data);
3c8687a7
TA
1917}
1918
3b256228
BW
1919int repo_config_get_value(struct repository *repo,
1920 const char *key, const char **value)
3c8687a7 1921{
3b256228
BW
1922 git_config_check_init(repo);
1923 return git_configset_get_value(repo->config, key, value);
3c8687a7
TA
1924}
1925
3b256228
BW
1926const struct string_list *repo_config_get_value_multi(struct repository *repo,
1927 const char *key)
1928{
1929 git_config_check_init(repo);
1930 return git_configset_get_value_multi(repo->config, key);
1931}
1932
1933int repo_config_get_string_const(struct repository *repo,
1934 const char *key, const char **dest)
1935{
1936 int ret;
1937 git_config_check_init(repo);
1938 ret = git_configset_get_string_const(repo->config, key, dest);
1939 if (ret < 0)
1940 git_die_config(key, NULL);
1941 return ret;
1942}
1943
1944int repo_config_get_string(struct repository *repo,
1945 const char *key, char **dest)
1946{
1947 git_config_check_init(repo);
1948 return repo_config_get_string_const(repo, key, (const char **)dest);
1949}
1950
1951int repo_config_get_int(struct repository *repo,
1952 const char *key, int *dest)
1953{
1954 git_config_check_init(repo);
1955 return git_configset_get_int(repo->config, key, dest);
1956}
1957
1958int repo_config_get_ulong(struct repository *repo,
1959 const char *key, unsigned long *dest)
1960{
1961 git_config_check_init(repo);
1962 return git_configset_get_ulong(repo->config, key, dest);
1963}
1964
1965int repo_config_get_bool(struct repository *repo,
1966 const char *key, int *dest)
1967{
1968 git_config_check_init(repo);
1969 return git_configset_get_bool(repo->config, key, dest);
1970}
1971
1972int repo_config_get_bool_or_int(struct repository *repo,
1973 const char *key, int *is_bool, int *dest)
1974{
1975 git_config_check_init(repo);
1976 return git_configset_get_bool_or_int(repo->config, key, is_bool, dest);
1977}
1978
1979int repo_config_get_maybe_bool(struct repository *repo,
1980 const char *key, int *dest)
1981{
1982 git_config_check_init(repo);
1983 return git_configset_get_maybe_bool(repo->config, key, dest);
1984}
1985
1986int repo_config_get_pathname(struct repository *repo,
1987 const char *key, const char **dest)
3c8687a7 1988{
5a80e97c 1989 int ret;
3b256228
BW
1990 git_config_check_init(repo);
1991 ret = git_configset_get_pathname(repo->config, key, dest);
5a80e97c
TA
1992 if (ret < 0)
1993 git_die_config(key, NULL);
1994 return ret;
3c8687a7
TA
1995}
1996
3b256228
BW
1997/* Functions used historically to read configuration from 'the_repository' */
1998void git_config(config_fn_t fn, void *data)
1999{
2000 repo_config(the_repository, fn, data);
2001}
2002
2003void git_config_clear(void)
2004{
2005 repo_config_clear(the_repository);
2006}
2007
2008int git_config_get_value(const char *key, const char **value)
2009{
2010 return repo_config_get_value(the_repository, key, value);
2011}
2012
2013const struct string_list *git_config_get_value_multi(const char *key)
2014{
2015 return repo_config_get_value_multi(the_repository, key);
2016}
2017
2018int git_config_get_string_const(const char *key, const char **dest)
2019{
2020 return repo_config_get_string_const(the_repository, key, dest);
2021}
2022
3c8687a7
TA
2023int git_config_get_string(const char *key, char **dest)
2024{
3b256228 2025 return repo_config_get_string(the_repository, key, dest);
3c8687a7
TA
2026}
2027
2028int git_config_get_int(const char *key, int *dest)
2029{
3b256228 2030 return repo_config_get_int(the_repository, key, dest);
3c8687a7
TA
2031}
2032
2033int git_config_get_ulong(const char *key, unsigned long *dest)
2034{
3b256228 2035 return repo_config_get_ulong(the_repository, key, dest);
3c8687a7
TA
2036}
2037
2038int git_config_get_bool(const char *key, int *dest)
2039{
3b256228 2040 return repo_config_get_bool(the_repository, key, dest);
3c8687a7
TA
2041}
2042
2043int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
2044{
3b256228 2045 return repo_config_get_bool_or_int(the_repository, key, is_bool, dest);
3c8687a7
TA
2046}
2047
2048int git_config_get_maybe_bool(const char *key, int *dest)
2049{
3b256228 2050 return repo_config_get_maybe_bool(the_repository, key, dest);
3c8687a7
TA
2051}
2052
2053int git_config_get_pathname(const char *key, const char **dest)
2054{
3b256228 2055 return repo_config_get_pathname(the_repository, key, dest);
5a80e97c
TA
2056}
2057
b22e51cb
BW
2058/*
2059 * Note: This function exists solely to maintain backward compatibility with
2060 * 'fetch' and 'update_clone' storing configuration in '.gitmodules' and should
2061 * NOT be used anywhere else.
2062 *
2063 * Runs the provided config function on the '.gitmodules' file found in the
2064 * working directory.
2065 */
2066void config_from_gitmodules(config_fn_t fn, void *data)
2067{
2068 if (the_repository->worktree) {
2069 char *file = repo_worktree_path(the_repository, GITMODULES_FILE);
2070 git_config_from_file(fn, file, data);
2071 free(file);
2072 }
2073}
2074
77d67977
CC
2075int git_config_get_expiry(const char *key, const char **output)
2076{
2077 int ret = git_config_get_string_const(key, output);
2078 if (ret)
2079 return ret;
2080 if (strcmp(*output, "now")) {
dddbad72 2081 timestamp_t now = approxidate("now");
77d67977
CC
2082 if (approxidate(*output) >= now)
2083 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
2084 }
2085 return ret;
2086}
2087
6e96cb52
JH
2088int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestamp_t now)
2089{
2090 char *expiry_string;
2091 intmax_t days;
2092 timestamp_t when;
2093
2094 if (git_config_get_string(key, &expiry_string))
2095 return 1; /* no such thing */
2096
2097 if (git_parse_signed(expiry_string, &days, maximum_signed_value_of_type(int))) {
2098 const int scale = 86400;
2099 *expiry = now - days * scale;
2100 return 0;
2101 }
2102
2103 if (!parse_expiry_date(expiry_string, &when)) {
2104 *expiry = when;
2105 return 0;
2106 }
2107 return -1; /* thing exists but cannot be parsed */
2108}
2109
435ec090
CC
2110int git_config_get_untracked_cache(void)
2111{
2112 int val = -1;
2113 const char *v;
2114
dae6c322
CC
2115 /* Hack for test programs like test-dump-untracked-cache */
2116 if (ignore_untracked_cache_config)
2117 return -1;
2118
435ec090
CC
2119 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
2120 return val;
2121
2122 if (!git_config_get_value("core.untrackedcache", &v)) {
2123 if (!strcasecmp(v, "keep"))
2124 return -1;
2125
f60ef2d6
CC
2126 error(_("unknown core.untrackedCache value '%s'; "
2127 "using 'keep' default value"), v);
435ec090
CC
2128 return -1;
2129 }
2130
2131 return -1; /* default value */
2132}
2133
1f44b09b
CC
2134int git_config_get_split_index(void)
2135{
2136 int val;
2137
2138 if (!git_config_get_maybe_bool("core.splitindex", &val))
2139 return val;
2140
2141 return -1; /* default value */
2142}
2143
72dcb7b3
CC
2144int git_config_get_max_percent_split_change(void)
2145{
2146 int val = -1;
2147
2148 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2149 if (0 <= val && val <= 100)
2150 return val;
2151
2152 return error(_("splitIndex.maxPercentChange value '%d' "
2153 "should be between 0 and 100"), val);
2154 }
2155
2156 return -1; /* default value */
2157}
2158
5a80e97c
TA
2159NORETURN
2160void git_die_config_linenr(const char *key, const char *filename, int linenr)
2161{
2162 if (!filename)
2163 die(_("unable to parse '%s' from command-line config"), key);
2164 else
2165 die(_("bad config variable '%s' in file '%s' at line %d"),
2166 key, filename, linenr);
2167}
2168
2169NORETURN __attribute__((format(printf, 2, 3)))
2170void git_die_config(const char *key, const char *err, ...)
2171{
2172 const struct string_list *values;
2173 struct key_value_info *kv_info;
2174
2175 if (err) {
2176 va_list params;
2177 va_start(params, err);
2178 vreportf("error: ", err, params);
2179 va_end(params);
2180 }
2181 values = git_config_get_value_multi(key);
2182 kv_info = values->items[values->nr - 1].util;
2183 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
2184}
2185
10bea152
JS
2186/*
2187 * Find all the stuff for git_config_set() below.
2188 */
4ddba79d 2189
10bea152
JS
2190static struct {
2191 int baselen;
4b25d091 2192 char *key;
f98d863d 2193 int do_not_match;
4b25d091 2194 regex_t *value_regex;
4ddba79d 2195 int multi_replace;
83786fa4
TR
2196 size_t *offset;
2197 unsigned int offset_alloc;
10bea152 2198 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
071bcaab 2199 unsigned int seen;
10bea152
JS
2200} store;
2201
4b25d091 2202static int matches(const char *key, const char *value)
f98d863d 2203{
c1063be2
JK
2204 if (strcmp(key, store.key))
2205 return 0; /* not ours */
2206 if (!store.value_regex)
2207 return 1; /* always matches */
2208 if (store.value_regex == CONFIG_REGEX_NONE)
2209 return 0; /* never matches */
2210
2211 return store.do_not_match ^
2212 (value && !regexec(store.value_regex, value, 0, NULL, 0));
f98d863d
JS
2213}
2214
4b25d091 2215static int store_aux(const char *key, const char *value, void *cb)
10bea152 2216{
ae9ee41d
JH
2217 const char *ep;
2218 size_t section_len;
2219
10bea152
JS
2220 switch (store.state) {
2221 case KEY_SEEN:
f98d863d 2222 if (matches(key, value)) {
4ddba79d 2223 if (store.seen == 1 && store.multi_replace == 0) {
8262aaa2 2224 warning(_("%s has multiple values"), key);
10bea152 2225 }
4ddba79d 2226
83786fa4
TR
2227 ALLOC_GROW(store.offset, store.seen + 1,
2228 store.offset_alloc);
2229
49d6cfa5 2230 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2231 store.seen++;
2232 }
2233 break;
2234 case SECTION_SEEN:
ae9ee41d
JH
2235 /*
2236 * What we are looking for is in store.key (both
2237 * section and var), and its section part is baselen
2238 * long. We found key (again, both section and var).
2239 * We would want to know if this key is in the same
2240 * section as what we are looking for. We already
2241 * know we are in the same section as what should
2242 * hold store.key.
2243 */
2244 ep = strrchr(key, '.');
2245 section_len = ep - key;
2246
2247 if ((section_len != store.baselen) ||
2248 memcmp(key, store.key, section_len+1)) {
10bea152
JS
2249 store.state = SECTION_END_SEEN;
2250 break;
ae9ee41d
JH
2251 }
2252
2253 /*
2254 * Do not increment matches: this is no match, but we
2255 * just made sure we are in the desired section.
2256 */
83786fa4
TR
2257 ALLOC_GROW(store.offset, store.seen + 1,
2258 store.offset_alloc);
49d6cfa5 2259 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2260 /* fallthru */
2261 case SECTION_END_SEEN:
2262 case START:
f98d863d 2263 if (matches(key, value)) {
83786fa4
TR
2264 ALLOC_GROW(store.offset, store.seen + 1,
2265 store.offset_alloc);
49d6cfa5 2266 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2267 store.state = KEY_SEEN;
2268 store.seen++;
d14f7764
LT
2269 } else {
2270 if (strrchr(key, '.') - key == store.baselen &&
bdf0ef08 2271 !strncmp(key, store.key, store.baselen)) {
93ddef3e 2272 store.state = SECTION_SEEN;
83786fa4
TR
2273 ALLOC_GROW(store.offset,
2274 store.seen + 1,
2275 store.offset_alloc);
49d6cfa5 2276 store.offset[store.seen] = cf->do_ftell(cf);
d14f7764 2277 }
bdf0ef08 2278 }
10bea152
JS
2279 }
2280 return 0;
2281}
2282
64c0d71c 2283static int write_error(const char *filename)
480c9e52 2284{
64c0d71c 2285 error("failed to write new configuration file %s", filename);
480c9e52
AW
2286
2287 /* Same error code as "failed to rename". */
2288 return 4;
2289}
2290
5463caab 2291static struct strbuf store_create_section(const char *key)
10bea152 2292{
cb891a59 2293 const char *dot;
d9bd4cbb 2294 int i;
f285a2d7 2295 struct strbuf sb = STRBUF_INIT;
d14f7764 2296
cb891a59 2297 dot = memchr(key, '.', store.baselen);
d14f7764 2298 if (dot) {
cb891a59
KH
2299 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
2300 for (i = dot - key + 1; i < store.baselen; i++) {
e5c349ba 2301 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
2302 strbuf_addch(&sb, '\\');
2303 strbuf_addch(&sb, key[i]);
d14f7764 2304 }
cb891a59
KH
2305 strbuf_addstr(&sb, "\"]\n");
2306 } else {
2307 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
d14f7764
LT
2308 }
2309
5463caab
SD
2310 return sb;
2311}
2312
3b48045c 2313static ssize_t write_section(int fd, const char *key)
5463caab 2314{
5463caab 2315 struct strbuf sb = store_create_section(key);
3b48045c 2316 ssize_t ret;
5463caab 2317
3b48045c 2318 ret = write_in_full(fd, sb.buf, sb.len) == sb.len;
cb891a59 2319 strbuf_release(&sb);
480c9e52 2320
d9bd4cbb 2321 return ret;
10bea152
JS
2322}
2323
d9bd4cbb 2324static ssize_t write_pair(int fd, const char *key, const char *value)
10bea152 2325{
d9bd4cbb
JK
2326 int i;
2327 ssize_t ret;
cb891a59
KH
2328 int length = strlen(key + store.baselen + 1);
2329 const char *quote = "";
f285a2d7 2330 struct strbuf sb = STRBUF_INIT;
cdd4fb15 2331
6281f394
JM
2332 /*
2333 * Check to see if the value needs to be surrounded with a dq pair.
2334 * Note that problematic characters are always backslash-quoted; this
2335 * check is about not losing leading or trailing SP and strings that
2336 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2337 * configuration parser.
2338 */
cdd4fb15 2339 if (value[0] == ' ')
cb891a59 2340 quote = "\"";
cdd4fb15
BG
2341 for (i = 0; value[i]; i++)
2342 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
2343 quote = "\"";
2344 if (i && value[i - 1] == ' ')
2345 quote = "\"";
2346
cb891a59
KH
2347 strbuf_addf(&sb, "\t%.*s = %s",
2348 length, key + store.baselen + 1, quote);
10bea152 2349
10bea152
JS
2350 for (i = 0; value[i]; i++)
2351 switch (value[i]) {
480c9e52 2352 case '\n':
cb891a59 2353 strbuf_addstr(&sb, "\\n");
480c9e52
AW
2354 break;
2355 case '\t':
cb891a59 2356 strbuf_addstr(&sb, "\\t");
480c9e52
AW
2357 break;
2358 case '"':
2359 case '\\':
cb891a59 2360 strbuf_addch(&sb, '\\');
1cf01a34 2361 /* fallthrough */
480c9e52 2362 default:
cb891a59 2363 strbuf_addch(&sb, value[i]);
480c9e52
AW
2364 break;
2365 }
cb891a59
KH
2366 strbuf_addf(&sb, "%s\n", quote);
2367
d9bd4cbb 2368 ret = write_in_full(fd, sb.buf, sb.len);
cb891a59
KH
2369 strbuf_release(&sb);
2370
d9bd4cbb 2371 return ret;
10bea152
JS
2372}
2373
4b25d091
FC
2374static ssize_t find_beginning_of_line(const char *contents, size_t size,
2375 size_t offset_, int *found_bracket)
4ddba79d 2376{
dc49cd76
SP
2377 size_t equal_offset = size, bracket_offset = size;
2378 ssize_t offset;
4ddba79d 2379
7a31cc0f 2380contline:
a6080a0a 2381 for (offset = offset_-2; offset > 0
4ddba79d
JS
2382 && contents[offset] != '\n'; offset--)
2383 switch (contents[offset]) {
2384 case '=': equal_offset = offset; break;
2385 case ']': bracket_offset = offset; break;
2386 }
7a31cc0f
FL
2387 if (offset > 0 && contents[offset-1] == '\\') {
2388 offset_ = offset;
2389 goto contline;
2390 }
4ddba79d
JS
2391 if (bracket_offset < equal_offset) {
2392 *found_bracket = 1;
2393 offset = bracket_offset+1;
2394 } else
2395 offset++;
2396
2397 return offset;
2398}
2399
30598ad0
PS
2400int git_config_set_in_file_gently(const char *config_filename,
2401 const char *key, const char *value)
5ec31182 2402{
30598ad0 2403 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
2404}
2405
3d180648
PS
2406void git_config_set_in_file(const char *config_filename,
2407 const char *key, const char *value)
10bea152 2408{
3d180648 2409 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
2410}
2411
30598ad0 2412int git_config_set_gently(const char *key, const char *value)
10bea152 2413{
30598ad0 2414 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
2415}
2416
3d180648 2417void git_config_set(const char *key, const char *value)
b4c8aba6 2418{
3d180648 2419 git_config_set_multivar(key, value, NULL, 0);
10bea152
JS
2420}
2421
2422/*
2423 * If value==NULL, unset in (remove from) config,
2424 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2425 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2426 * (only add a new one)
4ddba79d
JS
2427 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2428 * else all matching key/values (regardless how many) are removed,
2429 * before the new pair is written.
10bea152
JS
2430 *
2431 * Returns 0 on success.
2432 *
2433 * This function does this:
2434 *
2435 * - it locks the config file by creating ".git/config.lock"
2436 *
2437 * - it then parses the config using store_aux() as validator to find
2438 * the position on the key/value pair to replace. If it is to be unset,
2439 * it must be found exactly once.
2440 *
2441 * - the config file is mmap()ed and the part before the match (if any) is
2442 * written to the lock file, then the changed part and the rest.
2443 *
2444 * - the config file is removed and the lock file rename()d to it.
2445 *
2446 */
30598ad0
PS
2447int git_config_set_multivar_in_file_gently(const char *config_filename,
2448 const char *key, const char *value,
2449 const char *value_regex,
2450 int multi_replace)
10bea152 2451{
54d160ec 2452 int fd = -1, in_fd = -1;
dafc88b1 2453 int ret;
bfffb48c 2454 struct lock_file lock = LOCK_INIT;
0a5f5759 2455 char *filename_buf = NULL;
3a1b3126
JK
2456 char *contents = NULL;
2457 size_t contents_sz;
4ddba79d 2458
b09c53a3
LP
2459 /* parse-key returns negative; flip the sign to feed exit(3) */
2460 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2461 if (ret)
dafc88b1 2462 goto out_free;
b17e659d
JS
2463
2464 store.multi_replace = multi_replace;
10bea152 2465
0a5f5759
JK
2466 if (!config_filename)
2467 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2468
2469 /*
6cbf973c 2470 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2471 * contents of .git/config will be written into it.
2472 */
bfffb48c 2473 fd = hold_lock_file_for_update(&lock, config_filename, 0);
6cbf973c 2474 if (fd < 0) {
f0658ec9 2475 error_errno("could not lock config file %s", config_filename);
10bea152 2476 free(store.key);
7a397419 2477 ret = CONFIG_NO_LOCK;
dafc88b1 2478 goto out_free;
10bea152
JS
2479 }
2480
2481 /*
2482 * If .git/config does not exist yet, write a minimal version.
2483 */
88fb958b
AR
2484 in_fd = open(config_filename, O_RDONLY);
2485 if ( in_fd < 0 ) {
10bea152
JS
2486 free(store.key);
2487
88fb958b 2488 if ( ENOENT != errno ) {
f0658ec9 2489 error_errno("opening %s", config_filename);
7a397419 2490 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2491 goto out_free;
88fb958b 2492 }
10bea152
JS
2493 /* if nothing to unset, error out */
2494 if (value == NULL) {
7a397419 2495 ret = CONFIG_NOTHING_SET;
dafc88b1 2496 goto out_free;
10bea152
JS
2497 }
2498
4b25d091 2499 store.key = (char *)key;
d9bd4cbb
JK
2500 if (write_section(fd, key) < 0 ||
2501 write_pair(fd, key, value) < 0)
93c1e079
JH
2502 goto write_err_out;
2503 } else {
88fb958b 2504 struct stat st;
3a1b3126 2505 size_t copy_begin, copy_end;
dc49cd76 2506 int i, new_line = 0;
10bea152
JS
2507
2508 if (value_regex == NULL)
2509 store.value_regex = NULL;
c1063be2
JK
2510 else if (value_regex == CONFIG_REGEX_NONE)
2511 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2512 else {
f98d863d
JS
2513 if (value_regex[0] == '!') {
2514 store.do_not_match = 1;
2515 value_regex++;
2516 } else
2517 store.do_not_match = 0;
2518
2d7320d0 2519 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2520 if (regcomp(store.value_regex, value_regex,
2521 REG_EXTENDED)) {
64c0d71c 2522 error("invalid pattern: %s", value_regex);
10bea152 2523 free(store.value_regex);
7a397419 2524 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2525 goto out_free;
10bea152
JS
2526 }
2527 }
2528
83786fa4 2529 ALLOC_GROW(store.offset, 1, store.offset_alloc);
4ddba79d 2530 store.offset[0] = 0;
10bea152
JS
2531 store.state = START;
2532 store.seen = 0;
2533
2534 /*
2535 * After this, store.offset will contain the *end* offset
2536 * of the last match, or remain at 0 if no match was found.
2537 * As a side effect, we make sure to transform only a valid
2538 * existing config file.
2539 */
ef90d6d4 2540 if (git_config_from_file(store_aux, config_filename, NULL)) {
64c0d71c 2541 error("invalid config file %s", config_filename);
10bea152 2542 free(store.key);
c1063be2
JK
2543 if (store.value_regex != NULL &&
2544 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2545 regfree(store.value_regex);
2546 free(store.value_regex);
2547 }
7a397419 2548 ret = CONFIG_INVALID_FILE;
dafc88b1 2549 goto out_free;
10bea152
JS
2550 }
2551
2552 free(store.key);
c1063be2
JK
2553 if (store.value_regex != NULL &&
2554 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2555 regfree(store.value_regex);
2556 free(store.value_regex);
2557 }
2558
4ddba79d
JS
2559 /* if nothing to unset, or too many matches, error out */
2560 if ((store.seen == 0 && value == NULL) ||
2561 (store.seen > 1 && multi_replace == 0)) {
7a397419 2562 ret = CONFIG_NOTHING_SET;
dafc88b1 2563 goto out_free;
10bea152
JS
2564 }
2565
29647d79
NTND
2566 if (fstat(in_fd, &st) == -1) {
2567 error_errno(_("fstat on %s failed"), config_filename);
2568 ret = CONFIG_INVALID_FILE;
2569 goto out_free;
2570 }
2571
dc49cd76 2572 contents_sz = xsize_t(st.st_size);
1570856b
JK
2573 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2574 MAP_PRIVATE, in_fd, 0);
2575 if (contents == MAP_FAILED) {
0e8771f1
JK
2576 if (errno == ENODEV && S_ISDIR(st.st_mode))
2577 errno = EISDIR;
f0658ec9 2578 error_errno("unable to mmap '%s'", config_filename);
1570856b
JK
2579 ret = CONFIG_INVALID_FILE;
2580 contents = NULL;
2581 goto out_free;
2582 }
10bea152 2583 close(in_fd);
54d160ec 2584 in_fd = -1;
10bea152 2585
bfffb48c
JK
2586 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
2587 error_errno("chmod on %s failed", get_lock_file_path(&lock));
daa22c6f
EW
2588 ret = CONFIG_NO_WRITE;
2589 goto out_free;
2590 }
2591
4ddba79d
JS
2592 if (store.seen == 0)
2593 store.seen = 1;
2594
2595 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2596 if (store.offset[i] == 0) {
dc49cd76 2597 store.offset[i] = copy_end = contents_sz;
4ddba79d
JS
2598 } else if (store.state != KEY_SEEN) {
2599 copy_end = store.offset[i];
10bea152 2600 } else
4ddba79d 2601 copy_end = find_beginning_of_line(
dc49cd76 2602 contents, contents_sz,
4ddba79d
JS
2603 store.offset[i]-2, &new_line);
2604
02e5ba4a
JK
2605 if (copy_end > 0 && contents[copy_end-1] != '\n')
2606 new_line = 1;
2607
4ddba79d
JS
2608 /* write the first part of the config */
2609 if (copy_end > copy_begin) {
93c1e079 2610 if (write_in_full(fd, contents + copy_begin,
efacf609 2611 copy_end - copy_begin) < 0)
93c1e079
JH
2612 goto write_err_out;
2613 if (new_line &&
06f46f23 2614 write_str_in_full(fd, "\n") < 0)
93c1e079 2615 goto write_err_out;
4ddba79d
JS
2616 }
2617 copy_begin = store.offset[i];
10bea152
JS
2618 }
2619
10bea152
JS
2620 /* write the pair (value == NULL means unset) */
2621 if (value != NULL) {
93c1e079 2622 if (store.state == START) {
d9bd4cbb 2623 if (write_section(fd, key) < 0)
93c1e079 2624 goto write_err_out;
480c9e52 2625 }
d9bd4cbb 2626 if (write_pair(fd, key, value) < 0)
93c1e079 2627 goto write_err_out;
10bea152
JS
2628 }
2629
2630 /* write the rest of the config */
dc49cd76 2631 if (copy_begin < contents_sz)
93c1e079 2632 if (write_in_full(fd, contents + copy_begin,
efacf609 2633 contents_sz - copy_begin) < 0)
93c1e079 2634 goto write_err_out;
7a64592c
KB
2635
2636 munmap(contents, contents_sz);
2637 contents = NULL;
10bea152
JS
2638 }
2639
bfffb48c 2640 if (commit_lock_file(&lock) < 0) {
f0658ec9 2641 error_errno("could not write config file %s", config_filename);
7a397419 2642 ret = CONFIG_NO_WRITE;
dafc88b1 2643 goto out_free;
10bea152
JS
2644 }
2645
dafc88b1
SH
2646 ret = 0;
2647
3c8687a7
TA
2648 /* Invalidate the config cache */
2649 git_config_clear();
2650
dafc88b1 2651out_free:
bfffb48c 2652 rollback_lock_file(&lock);
0a5f5759 2653 free(filename_buf);
3a1b3126
JK
2654 if (contents)
2655 munmap(contents, contents_sz);
54d160ec
SS
2656 if (in_fd >= 0)
2657 close(in_fd);
dafc88b1 2658 return ret;
93c1e079
JH
2659
2660write_err_out:
bfffb48c 2661 ret = write_error(get_lock_file_path(&lock));
93c1e079
JH
2662 goto out_free;
2663
10bea152
JS
2664}
2665
3d180648
PS
2666void git_config_set_multivar_in_file(const char *config_filename,
2667 const char *key, const char *value,
2668 const char *value_regex, int multi_replace)
b4c8aba6 2669{
1cae428e
JK
2670 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2671 value_regex, multi_replace))
2672 return;
2673 if (value)
8c3ca351 2674 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2675 else
2676 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2677}
2678
30598ad0
PS
2679int git_config_set_multivar_gently(const char *key, const char *value,
2680 const char *value_regex, int multi_replace)
5ec31182 2681{
30598ad0
PS
2682 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2683 multi_replace);
5ec31182
RR
2684}
2685
3d180648
PS
2686void git_config_set_multivar(const char *key, const char *value,
2687 const char *value_regex, int multi_replace)
5ec31182 2688{
3d180648
PS
2689 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2690 multi_replace);
5ec31182
RR
2691}
2692
118f8b24
PB
2693static int section_name_match (const char *buf, const char *name)
2694{
2695 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2696 if (buf[i] != '[')
2697 return 0;
2698 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2699 if (!dot && isspace(buf[i])) {
2700 dot = 1;
2701 if (name[j++] != '.')
2702 break;
2703 for (i++; isspace(buf[i]); i++)
2704 ; /* do nothing */
2705 if (buf[i] != '"')
2706 break;
2707 continue;
2708 }
2709 if (buf[i] == '\\' && dot)
2710 i++;
2711 else if (buf[i] == '"' && dot) {
2712 for (i++; isspace(buf[i]); i++)
2713 ; /* do_nothing */
2714 break;
2715 }
2716 if (buf[i] != name[j++])
2717 break;
2718 }
a4c0d463
AV
2719 if (buf[i] == ']' && name[j] == 0) {
2720 /*
2721 * We match, now just find the right length offset by
2722 * gobbling up any whitespace after it, as well
2723 */
2724 i++;
2725 for (; buf[i] && isspace(buf[i]); i++)
2726 ; /* do nothing */
2727 return i;
2728 }
2729 return 0;
118f8b24
PB
2730}
2731
94a35b1a
JK
2732static int section_name_is_ok(const char *name)
2733{
2734 /* Empty section names are bogus. */
2735 if (!*name)
2736 return 0;
2737
2738 /*
2739 * Before a dot, we must be alphanumeric or dash. After the first dot,
2740 * anything goes, so we can stop checking.
2741 */
2742 for (; *name && *name != '.'; name++)
2743 if (*name != '-' && !isalnum(*name))
2744 return 0;
2745 return 1;
2746}
2747
118f8b24 2748/* if new_name == NULL, the section is removed instead */
52d59cc6
SD
2749static int git_config_copy_or_rename_section_in_file(const char *config_filename,
2750 const char *old_name, const char *new_name, int copy)
0667fcfb 2751{
118f8b24 2752 int ret = 0, remove = 0;
42bd39b5 2753 char *filename_buf = NULL;
837e34eb 2754 struct lock_file lock = LOCK_INIT;
0667fcfb
JS
2755 int out_fd;
2756 char buf[1024];
4db7dbdb 2757 FILE *config_file = NULL;
daa22c6f 2758 struct stat st;
52d59cc6 2759 struct strbuf copystr = STRBUF_INIT;
0667fcfb 2760
94a35b1a
JK
2761 if (new_name && !section_name_is_ok(new_name)) {
2762 ret = error("invalid section name: %s", new_name);
c06fa62d 2763 goto out_no_rollback;
94a35b1a
JK
2764 }
2765
42bd39b5
JK
2766 if (!config_filename)
2767 config_filename = filename_buf = git_pathdup("config");
2768
837e34eb 2769 out_fd = hold_lock_file_for_update(&lock, config_filename, 0);
fc1905bb 2770 if (out_fd < 0) {
64c0d71c 2771 ret = error("could not lock config file %s", config_filename);
fc1905bb
JH
2772 goto out;
2773 }
0667fcfb 2774
fc1905bb 2775 if (!(config_file = fopen(config_filename, "rb"))) {
11dc1fcb
NTND
2776 ret = warn_on_fopen_errors(config_filename);
2777 if (ret)
2778 goto out;
01ebb9dc 2779 /* no config file means nothing to rename, no error */
6e45b43f 2780 goto commit_and_out;
fc1905bb 2781 }
0667fcfb 2782
29647d79
NTND
2783 if (fstat(fileno(config_file), &st) == -1) {
2784 ret = error_errno(_("fstat on %s failed"), config_filename);
2785 goto out;
2786 }
daa22c6f 2787
837e34eb 2788 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
f0658ec9 2789 ret = error_errno("chmod on %s failed",
837e34eb 2790 get_lock_file_path(&lock));
daa22c6f
EW
2791 goto out;
2792 }
2793
0667fcfb
JS
2794 while (fgets(buf, sizeof(buf), config_file)) {
2795 int i;
480c9e52 2796 int length;
52d59cc6 2797 int is_section = 0;
9a5abfc7 2798 char *output = buf;
0667fcfb
JS
2799 for (i = 0; buf[i] && isspace(buf[i]); i++)
2800 ; /* do nothing */
2801 if (buf[i] == '[') {
2802 /* it's a section */
52d59cc6
SD
2803 int offset;
2804 is_section = 1;
2805
2806 /*
2807 * When encountering a new section under -c we
2808 * need to flush out any section we're already
2809 * coping and begin anew. There might be
2810 * multiple [branch "$name"] sections.
2811 */
2812 if (copystr.len > 0) {
2813 if (write_in_full(out_fd, copystr.buf, copystr.len) != copystr.len) {
0b646bca 2814 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
2815 goto out;
2816 }
2817 strbuf_reset(&copystr);
2818 }
2819
2820 offset = section_name_match(&buf[i], old_name);
a4c0d463 2821 if (offset > 0) {
118f8b24
PB
2822 ret++;
2823 if (new_name == NULL) {
2824 remove = 1;
0667fcfb
JS
2825 continue;
2826 }
0667fcfb 2827 store.baselen = strlen(new_name);
52d59cc6 2828 if (!copy) {
3b48045c 2829 if (write_section(out_fd, new_name) < 0) {
0b646bca 2830 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
2831 goto out;
2832 }
9a5abfc7 2833 /*
52d59cc6
SD
2834 * We wrote out the new section, with
2835 * a newline, now skip the old
2836 * section's length
9a5abfc7 2837 */
52d59cc6
SD
2838 output += offset + i;
2839 if (strlen(output) > 0) {
2840 /*
2841 * More content means there's
2842 * a declaration to put on the
2843 * next line; indent with a
2844 * tab
2845 */
2846 output -= 1;
2847 output[0] = '\t';
2848 }
2849 } else {
2850 copystr = store_create_section(new_name);
9a5abfc7 2851 }
0667fcfb 2852 }
118f8b24 2853 remove = 0;
0667fcfb 2854 }
118f8b24
PB
2855 if (remove)
2856 continue;
9a5abfc7 2857 length = strlen(output);
52d59cc6
SD
2858
2859 if (!is_section && copystr.len > 0) {
2860 strbuf_add(&copystr, output, length);
2861 }
2862
06f46f23 2863 if (write_in_full(out_fd, output, length) < 0) {
837e34eb 2864 ret = write_error(get_lock_file_path(&lock));
480c9e52
AW
2865 goto out;
2866 }
0667fcfb 2867 }
52d59cc6
SD
2868
2869 /*
2870 * Copy a trailing section at the end of the config, won't be
2871 * flushed by the usual "flush because we have a new section
2872 * logic in the loop above.
2873 */
2874 if (copystr.len > 0) {
2875 if (write_in_full(out_fd, copystr.buf, copystr.len) != copystr.len) {
0b646bca 2876 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
2877 goto out;
2878 }
2879 strbuf_reset(&copystr);
2880 }
2881
fc1905bb 2882 fclose(config_file);
4db7dbdb 2883 config_file = NULL;
6e45b43f 2884commit_and_out:
837e34eb 2885 if (commit_lock_file(&lock) < 0)
f0658ec9
NTND
2886 ret = error_errno("could not write config file %s",
2887 config_filename);
8b590075 2888out:
4db7dbdb
JS
2889 if (config_file)
2890 fclose(config_file);
837e34eb 2891 rollback_lock_file(&lock);
c06fa62d 2892out_no_rollback:
42bd39b5 2893 free(filename_buf);
0667fcfb
JS
2894 return ret;
2895}
40ea4ed9 2896
52d59cc6
SD
2897int git_config_rename_section_in_file(const char *config_filename,
2898 const char *old_name, const char *new_name)
2899{
2900 return git_config_copy_or_rename_section_in_file(config_filename,
2901 old_name, new_name, 0);
2902}
2903
42bd39b5
JK
2904int git_config_rename_section(const char *old_name, const char *new_name)
2905{
4a7bb5ba 2906 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
2907}
2908
52d59cc6
SD
2909int git_config_copy_section_in_file(const char *config_filename,
2910 const char *old_name, const char *new_name)
2911{
2912 return git_config_copy_or_rename_section_in_file(config_filename,
2913 old_name, new_name, 1);
2914}
2915
2916int git_config_copy_section(const char *old_name, const char *new_name)
2917{
2918 return git_config_copy_section_in_file(NULL, old_name, new_name);
2919}
2920
40ea4ed9
JH
2921/*
2922 * Call this to report error for your variable that should not
2923 * get a boolean value (i.e. "[my] var" means "true").
2924 */
a469a101 2925#undef config_error_nonbool
40ea4ed9
JH
2926int config_error_nonbool(const char *var)
2927{
8c3ca351 2928 return error("missing value for '%s'", var);
40ea4ed9 2929}
1b86bbb0
JK
2930
2931int parse_config_key(const char *var,
2932 const char *section,
2933 const char **subsection, int *subsection_len,
2934 const char **key)
2935{
1b86bbb0
JK
2936 const char *dot;
2937
2938 /* Does it start with "section." ? */
e3394fdc 2939 if (!skip_prefix(var, section, &var) || *var != '.')
1b86bbb0
JK
2940 return -1;
2941
2942 /*
2943 * Find the key; we don't know yet if we have a subsection, but we must
2944 * parse backwards from the end, since the subsection may have dots in
2945 * it, too.
2946 */
2947 dot = strrchr(var, '.');
2948 *key = dot + 1;
2949
2950 /* Did we have a subsection at all? */
e3394fdc 2951 if (dot == var) {
48f8d9f7
JK
2952 if (subsection) {
2953 *subsection = NULL;
2954 *subsection_len = 0;
2955 }
1b86bbb0
JK
2956 }
2957 else {
48f8d9f7
JK
2958 if (!subsection)
2959 return -1;
e3394fdc 2960 *subsection = var + 1;
1b86bbb0
JK
2961 *subsection_len = dot - *subsection;
2962 }
2963
2964 return 0;
2965}
473166b9
LS
2966
2967const char *current_config_origin_type(void)
2968{
1b8132d9 2969 int type;
0d44a2da
JK
2970 if (current_config_kvi)
2971 type = current_config_kvi->origin_type;
2972 else if(cf)
2973 type = cf->origin_type;
2974 else
3258258f 2975 die("BUG: current_config_origin_type called outside config callback");
1b8132d9
VA
2976
2977 switch (type) {
2978 case CONFIG_ORIGIN_BLOB:
2979 return "blob";
2980 case CONFIG_ORIGIN_FILE:
2981 return "file";
2982 case CONFIG_ORIGIN_STDIN:
2983 return "standard input";
2984 case CONFIG_ORIGIN_SUBMODULE_BLOB:
2985 return "submodule-blob";
2986 case CONFIG_ORIGIN_CMDLINE:
2987 return "command line";
2988 default:
2989 die("BUG: unknown config origin type");
2990 }
473166b9
LS
2991}
2992
2993const char *current_config_name(void)
2994{
0d44a2da
JK
2995 const char *name;
2996 if (current_config_kvi)
2997 name = current_config_kvi->filename;
2998 else if (cf)
2999 name = cf->name;
3000 else
3258258f 3001 die("BUG: current_config_name called outside config callback");
0d44a2da 3002 return name ? name : "";
473166b9 3003}
9acc5911
JK
3004
3005enum config_scope current_config_scope(void)
3006{
3007 if (current_config_kvi)
3008 return current_config_kvi->scope;
3009 else
3010 return current_parsing_scope;
473166b9 3011}