cache.h: add GITMODULES_FILE macro
[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
9a549d43 931int git_parse_maybe_bool(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
b2be2f6a
JK
948int git_config_maybe_bool(const char *name, const char *value)
949{
9a549d43 950 int v = git_parse_maybe_bool(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{
9a549d43 960 int v = git_parse_maybe_bool(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
9ebf689a
BW
1463int git_config_from_blob_sha1(config_fn_t fn,
1464 const char *name,
1465 const unsigned char *sha1,
1466 void *data)
1bc88819
HV
1467{
1468 enum object_type type;
1469 char *buf;
1470 unsigned long size;
1471 int ret;
1472
1473 buf = read_sha1_file(sha1, &type, &size);
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{
1491 unsigned char sha1[20];
1492
1493 if (get_sha1(name, sha1) < 0)
1494 return error("unable to resolve config blob '%s'", name);
1495 return git_config_from_blob_sha1(fn, name, sha1, data);
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
SB
1717static int config_set_element_cmp(const void *unused_cmp_data,
1718 const struct config_set_element *e1,
1719 const struct config_set_element *e2,
1720 const void *unused_keydata)
3c8687a7
TA
1721{
1722 return strcmp(e1->key, e2->key);
1723}
1724
1725void git_configset_init(struct config_set *cs)
1726{
7663cdc8
SB
1727 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp,
1728 NULL, 0);
3c8687a7 1729 cs->hash_initialized = 1;
155ef25f
TA
1730 cs->list.nr = 0;
1731 cs->list.alloc = 0;
1732 cs->list.items = NULL;
3c8687a7
TA
1733}
1734
1735void git_configset_clear(struct config_set *cs)
1736{
1737 struct config_set_element *entry;
1738 struct hashmap_iter iter;
1739 if (!cs->hash_initialized)
1740 return;
1741
1742 hashmap_iter_init(&cs->config_hash, &iter);
1743 while ((entry = hashmap_iter_next(&iter))) {
1744 free(entry->key);
3df8fd62 1745 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1746 }
1747 hashmap_free(&cs->config_hash, 1);
1748 cs->hash_initialized = 0;
155ef25f
TA
1749 free(cs->list.items);
1750 cs->list.nr = 0;
1751 cs->list.alloc = 0;
1752 cs->list.items = NULL;
3c8687a7
TA
1753}
1754
1755static int config_set_callback(const char *key, const char *value, void *cb)
1756{
1757 struct config_set *cs = cb;
1758 configset_add_value(cs, key, value);
1759 return 0;
1760}
1761
1762int git_configset_add_file(struct config_set *cs, const char *filename)
1763{
1764 return git_config_from_file(config_set_callback, filename, cs);
1765}
1766
1767int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1768{
1769 const struct string_list *values = NULL;
1770 /*
1771 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1772 * queried key in the files of the configset, the value returned will be the last
1773 * value in the value list for that key.
1774 */
1775 values = git_configset_get_value_multi(cs, key);
1776
1777 if (!values)
1778 return 1;
1779 assert(values->nr > 0);
1780 *value = values->items[values->nr - 1].string;
1781 return 0;
1782}
1783
1784const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1785{
1786 struct config_set_element *e = configset_find_element(cs, key);
1787 return e ? &e->value_list : NULL;
1788}
1789
1790int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1791{
1792 const char *value;
1793 if (!git_configset_get_value(cs, key, &value))
1794 return git_config_string(dest, key, value);
1795 else
1796 return 1;
1797}
1798
1799int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1800{
1801 return git_configset_get_string_const(cs, key, (const char **)dest);
1802}
1803
1804int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1805{
1806 const char *value;
1807 if (!git_configset_get_value(cs, key, &value)) {
1808 *dest = git_config_int(key, value);
1809 return 0;
1810 } else
1811 return 1;
1812}
1813
1814int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1815{
1816 const char *value;
1817 if (!git_configset_get_value(cs, key, &value)) {
1818 *dest = git_config_ulong(key, value);
1819 return 0;
1820 } else
1821 return 1;
1822}
1823
1824int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1825{
1826 const char *value;
1827 if (!git_configset_get_value(cs, key, &value)) {
1828 *dest = git_config_bool(key, value);
1829 return 0;
1830 } else
1831 return 1;
1832}
1833
1834int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1835 int *is_bool, int *dest)
1836{
1837 const char *value;
1838 if (!git_configset_get_value(cs, key, &value)) {
1839 *dest = git_config_bool_or_int(key, value, is_bool);
1840 return 0;
1841 } else
1842 return 1;
1843}
1844
1845int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1846{
1847 const char *value;
1848 if (!git_configset_get_value(cs, key, &value)) {
1849 *dest = git_config_maybe_bool(key, value);
1850 if (*dest == -1)
1851 return -1;
1852 return 0;
1853 } else
1854 return 1;
1855}
1856
1857int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1858{
1859 const char *value;
1860 if (!git_configset_get_value(cs, key, &value))
1861 return git_config_pathname(dest, key, value);
1862 else
1863 return 1;
1864}
1865
3b256228
BW
1866/* Functions use to read configuration from a repository */
1867static void repo_read_config(struct repository *repo)
3c8687a7 1868{
3b256228
BW
1869 struct config_options opts;
1870
1871 opts.respect_includes = 1;
1872 opts.commondir = repo->commondir;
1873 opts.git_dir = repo->gitdir;
1874
1875 if (!repo->config)
1876 repo->config = xcalloc(1, sizeof(struct config_set));
1877 else
1878 git_configset_clear(repo->config);
1879
1880 git_configset_init(repo->config);
1881
1882 if (config_with_options(config_set_callback, repo->config, NULL, &opts) < 0)
1883 /*
1884 * config_with_options() normally returns only
1885 * zero, as most errors are fatal, and
1886 * non-fatal potential errors are guarded by "if"
1887 * statements that are entered only when no error is
1888 * possible.
1889 *
1890 * If we ever encounter a non-fatal error, it means
1891 * something went really wrong and we should stop
1892 * immediately.
1893 */
1894 die(_("unknown error occurred while reading the configuration files"));
1895}
1896
1897static void git_config_check_init(struct repository *repo)
1898{
1899 if (repo->config && repo->config->hash_initialized)
3c8687a7 1900 return;
3b256228 1901 repo_read_config(repo);
3c8687a7
TA
1902}
1903
3b256228 1904static void repo_config_clear(struct repository *repo)
3c8687a7 1905{
3b256228 1906 if (!repo->config || !repo->config->hash_initialized)
3c8687a7 1907 return;
3b256228 1908 git_configset_clear(repo->config);
3c8687a7
TA
1909}
1910
3b256228 1911void repo_config(struct repository *repo, config_fn_t fn, void *data)
3c8687a7 1912{
3b256228
BW
1913 git_config_check_init(repo);
1914 configset_iter(repo->config, fn, data);
3c8687a7
TA
1915}
1916
3b256228
BW
1917int repo_config_get_value(struct repository *repo,
1918 const char *key, const char **value)
3c8687a7 1919{
3b256228
BW
1920 git_config_check_init(repo);
1921 return git_configset_get_value(repo->config, key, value);
3c8687a7
TA
1922}
1923
3b256228
BW
1924const struct string_list *repo_config_get_value_multi(struct repository *repo,
1925 const char *key)
1926{
1927 git_config_check_init(repo);
1928 return git_configset_get_value_multi(repo->config, key);
1929}
1930
1931int repo_config_get_string_const(struct repository *repo,
1932 const char *key, const char **dest)
1933{
1934 int ret;
1935 git_config_check_init(repo);
1936 ret = git_configset_get_string_const(repo->config, key, dest);
1937 if (ret < 0)
1938 git_die_config(key, NULL);
1939 return ret;
1940}
1941
1942int repo_config_get_string(struct repository *repo,
1943 const char *key, char **dest)
1944{
1945 git_config_check_init(repo);
1946 return repo_config_get_string_const(repo, key, (const char **)dest);
1947}
1948
1949int repo_config_get_int(struct repository *repo,
1950 const char *key, int *dest)
1951{
1952 git_config_check_init(repo);
1953 return git_configset_get_int(repo->config, key, dest);
1954}
1955
1956int repo_config_get_ulong(struct repository *repo,
1957 const char *key, unsigned long *dest)
1958{
1959 git_config_check_init(repo);
1960 return git_configset_get_ulong(repo->config, key, dest);
1961}
1962
1963int repo_config_get_bool(struct repository *repo,
1964 const char *key, int *dest)
1965{
1966 git_config_check_init(repo);
1967 return git_configset_get_bool(repo->config, key, dest);
1968}
1969
1970int repo_config_get_bool_or_int(struct repository *repo,
1971 const char *key, int *is_bool, int *dest)
1972{
1973 git_config_check_init(repo);
1974 return git_configset_get_bool_or_int(repo->config, key, is_bool, dest);
1975}
1976
1977int repo_config_get_maybe_bool(struct repository *repo,
1978 const char *key, int *dest)
1979{
1980 git_config_check_init(repo);
1981 return git_configset_get_maybe_bool(repo->config, key, dest);
1982}
1983
1984int repo_config_get_pathname(struct repository *repo,
1985 const char *key, const char **dest)
3c8687a7 1986{
5a80e97c 1987 int ret;
3b256228
BW
1988 git_config_check_init(repo);
1989 ret = git_configset_get_pathname(repo->config, key, dest);
5a80e97c
TA
1990 if (ret < 0)
1991 git_die_config(key, NULL);
1992 return ret;
3c8687a7
TA
1993}
1994
3b256228
BW
1995/* Functions used historically to read configuration from 'the_repository' */
1996void git_config(config_fn_t fn, void *data)
1997{
1998 repo_config(the_repository, fn, data);
1999}
2000
2001void git_config_clear(void)
2002{
2003 repo_config_clear(the_repository);
2004}
2005
2006int git_config_get_value(const char *key, const char **value)
2007{
2008 return repo_config_get_value(the_repository, key, value);
2009}
2010
2011const struct string_list *git_config_get_value_multi(const char *key)
2012{
2013 return repo_config_get_value_multi(the_repository, key);
2014}
2015
2016int git_config_get_string_const(const char *key, const char **dest)
2017{
2018 return repo_config_get_string_const(the_repository, key, dest);
2019}
2020
3c8687a7
TA
2021int git_config_get_string(const char *key, char **dest)
2022{
3b256228 2023 return repo_config_get_string(the_repository, key, dest);
3c8687a7
TA
2024}
2025
2026int git_config_get_int(const char *key, int *dest)
2027{
3b256228 2028 return repo_config_get_int(the_repository, key, dest);
3c8687a7
TA
2029}
2030
2031int git_config_get_ulong(const char *key, unsigned long *dest)
2032{
3b256228 2033 return repo_config_get_ulong(the_repository, key, dest);
3c8687a7
TA
2034}
2035
2036int git_config_get_bool(const char *key, int *dest)
2037{
3b256228 2038 return repo_config_get_bool(the_repository, key, dest);
3c8687a7
TA
2039}
2040
2041int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
2042{
3b256228 2043 return repo_config_get_bool_or_int(the_repository, key, is_bool, dest);
3c8687a7
TA
2044}
2045
2046int git_config_get_maybe_bool(const char *key, int *dest)
2047{
3b256228 2048 return repo_config_get_maybe_bool(the_repository, key, dest);
3c8687a7
TA
2049}
2050
2051int git_config_get_pathname(const char *key, const char **dest)
2052{
3b256228 2053 return repo_config_get_pathname(the_repository, key, dest);
5a80e97c
TA
2054}
2055
77d67977
CC
2056int git_config_get_expiry(const char *key, const char **output)
2057{
2058 int ret = git_config_get_string_const(key, output);
2059 if (ret)
2060 return ret;
2061 if (strcmp(*output, "now")) {
dddbad72 2062 timestamp_t now = approxidate("now");
77d67977
CC
2063 if (approxidate(*output) >= now)
2064 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
2065 }
2066 return ret;
2067}
2068
435ec090
CC
2069int git_config_get_untracked_cache(void)
2070{
2071 int val = -1;
2072 const char *v;
2073
dae6c322
CC
2074 /* Hack for test programs like test-dump-untracked-cache */
2075 if (ignore_untracked_cache_config)
2076 return -1;
2077
435ec090
CC
2078 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
2079 return val;
2080
2081 if (!git_config_get_value("core.untrackedcache", &v)) {
2082 if (!strcasecmp(v, "keep"))
2083 return -1;
2084
f60ef2d6
CC
2085 error(_("unknown core.untrackedCache value '%s'; "
2086 "using 'keep' default value"), v);
435ec090
CC
2087 return -1;
2088 }
2089
2090 return -1; /* default value */
2091}
2092
1f44b09b
CC
2093int git_config_get_split_index(void)
2094{
2095 int val;
2096
2097 if (!git_config_get_maybe_bool("core.splitindex", &val))
2098 return val;
2099
2100 return -1; /* default value */
2101}
2102
72dcb7b3
CC
2103int git_config_get_max_percent_split_change(void)
2104{
2105 int val = -1;
2106
2107 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2108 if (0 <= val && val <= 100)
2109 return val;
2110
2111 return error(_("splitIndex.maxPercentChange value '%d' "
2112 "should be between 0 and 100"), val);
2113 }
2114
2115 return -1; /* default value */
2116}
2117
5a80e97c
TA
2118NORETURN
2119void git_die_config_linenr(const char *key, const char *filename, int linenr)
2120{
2121 if (!filename)
2122 die(_("unable to parse '%s' from command-line config"), key);
2123 else
2124 die(_("bad config variable '%s' in file '%s' at line %d"),
2125 key, filename, linenr);
2126}
2127
2128NORETURN __attribute__((format(printf, 2, 3)))
2129void git_die_config(const char *key, const char *err, ...)
2130{
2131 const struct string_list *values;
2132 struct key_value_info *kv_info;
2133
2134 if (err) {
2135 va_list params;
2136 va_start(params, err);
2137 vreportf("error: ", err, params);
2138 va_end(params);
2139 }
2140 values = git_config_get_value_multi(key);
2141 kv_info = values->items[values->nr - 1].util;
2142 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
2143}
2144
10bea152
JS
2145/*
2146 * Find all the stuff for git_config_set() below.
2147 */
4ddba79d 2148
10bea152
JS
2149static struct {
2150 int baselen;
4b25d091 2151 char *key;
f98d863d 2152 int do_not_match;
4b25d091 2153 regex_t *value_regex;
4ddba79d 2154 int multi_replace;
83786fa4
TR
2155 size_t *offset;
2156 unsigned int offset_alloc;
10bea152
JS
2157 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
2158 int seen;
2159} store;
2160
4b25d091 2161static int matches(const char *key, const char *value)
f98d863d 2162{
c1063be2
JK
2163 if (strcmp(key, store.key))
2164 return 0; /* not ours */
2165 if (!store.value_regex)
2166 return 1; /* always matches */
2167 if (store.value_regex == CONFIG_REGEX_NONE)
2168 return 0; /* never matches */
2169
2170 return store.do_not_match ^
2171 (value && !regexec(store.value_regex, value, 0, NULL, 0));
f98d863d
JS
2172}
2173
4b25d091 2174static int store_aux(const char *key, const char *value, void *cb)
10bea152 2175{
ae9ee41d
JH
2176 const char *ep;
2177 size_t section_len;
2178
10bea152
JS
2179 switch (store.state) {
2180 case KEY_SEEN:
f98d863d 2181 if (matches(key, value)) {
4ddba79d 2182 if (store.seen == 1 && store.multi_replace == 0) {
8262aaa2 2183 warning(_("%s has multiple values"), key);
10bea152 2184 }
4ddba79d 2185
83786fa4
TR
2186 ALLOC_GROW(store.offset, store.seen + 1,
2187 store.offset_alloc);
2188
49d6cfa5 2189 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2190 store.seen++;
2191 }
2192 break;
2193 case SECTION_SEEN:
ae9ee41d
JH
2194 /*
2195 * What we are looking for is in store.key (both
2196 * section and var), and its section part is baselen
2197 * long. We found key (again, both section and var).
2198 * We would want to know if this key is in the same
2199 * section as what we are looking for. We already
2200 * know we are in the same section as what should
2201 * hold store.key.
2202 */
2203 ep = strrchr(key, '.');
2204 section_len = ep - key;
2205
2206 if ((section_len != store.baselen) ||
2207 memcmp(key, store.key, section_len+1)) {
10bea152
JS
2208 store.state = SECTION_END_SEEN;
2209 break;
ae9ee41d
JH
2210 }
2211
2212 /*
2213 * Do not increment matches: this is no match, but we
2214 * just made sure we are in the desired section.
2215 */
83786fa4
TR
2216 ALLOC_GROW(store.offset, store.seen + 1,
2217 store.offset_alloc);
49d6cfa5 2218 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2219 /* fallthru */
2220 case SECTION_END_SEEN:
2221 case START:
f98d863d 2222 if (matches(key, value)) {
83786fa4
TR
2223 ALLOC_GROW(store.offset, store.seen + 1,
2224 store.offset_alloc);
49d6cfa5 2225 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2226 store.state = KEY_SEEN;
2227 store.seen++;
d14f7764
LT
2228 } else {
2229 if (strrchr(key, '.') - key == store.baselen &&
bdf0ef08 2230 !strncmp(key, store.key, store.baselen)) {
93ddef3e 2231 store.state = SECTION_SEEN;
83786fa4
TR
2232 ALLOC_GROW(store.offset,
2233 store.seen + 1,
2234 store.offset_alloc);
49d6cfa5 2235 store.offset[store.seen] = cf->do_ftell(cf);
d14f7764 2236 }
bdf0ef08 2237 }
10bea152
JS
2238 }
2239 return 0;
2240}
2241
64c0d71c 2242static int write_error(const char *filename)
480c9e52 2243{
64c0d71c 2244 error("failed to write new configuration file %s", filename);
480c9e52
AW
2245
2246 /* Same error code as "failed to rename". */
2247 return 4;
2248}
2249
4b25d091 2250static int store_write_section(int fd, const char *key)
10bea152 2251{
cb891a59
KH
2252 const char *dot;
2253 int i, success;
f285a2d7 2254 struct strbuf sb = STRBUF_INIT;
d14f7764 2255
cb891a59 2256 dot = memchr(key, '.', store.baselen);
d14f7764 2257 if (dot) {
cb891a59
KH
2258 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
2259 for (i = dot - key + 1; i < store.baselen; i++) {
e5c349ba 2260 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
2261 strbuf_addch(&sb, '\\');
2262 strbuf_addch(&sb, key[i]);
d14f7764 2263 }
cb891a59
KH
2264 strbuf_addstr(&sb, "\"]\n");
2265 } else {
2266 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
d14f7764
LT
2267 }
2268
cb891a59
KH
2269 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2270 strbuf_release(&sb);
480c9e52 2271
cb891a59 2272 return success;
10bea152
JS
2273}
2274
4b25d091 2275static int store_write_pair(int fd, const char *key, const char *value)
10bea152 2276{
cb891a59
KH
2277 int i, success;
2278 int length = strlen(key + store.baselen + 1);
2279 const char *quote = "";
f285a2d7 2280 struct strbuf sb = STRBUF_INIT;
cdd4fb15 2281
6281f394
JM
2282 /*
2283 * Check to see if the value needs to be surrounded with a dq pair.
2284 * Note that problematic characters are always backslash-quoted; this
2285 * check is about not losing leading or trailing SP and strings that
2286 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2287 * configuration parser.
2288 */
cdd4fb15 2289 if (value[0] == ' ')
cb891a59 2290 quote = "\"";
cdd4fb15
BG
2291 for (i = 0; value[i]; i++)
2292 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
2293 quote = "\"";
2294 if (i && value[i - 1] == ' ')
2295 quote = "\"";
2296
cb891a59
KH
2297 strbuf_addf(&sb, "\t%.*s = %s",
2298 length, key + store.baselen + 1, quote);
10bea152 2299
10bea152
JS
2300 for (i = 0; value[i]; i++)
2301 switch (value[i]) {
480c9e52 2302 case '\n':
cb891a59 2303 strbuf_addstr(&sb, "\\n");
480c9e52
AW
2304 break;
2305 case '\t':
cb891a59 2306 strbuf_addstr(&sb, "\\t");
480c9e52
AW
2307 break;
2308 case '"':
2309 case '\\':
cb891a59 2310 strbuf_addch(&sb, '\\');
480c9e52 2311 default:
cb891a59 2312 strbuf_addch(&sb, value[i]);
480c9e52
AW
2313 break;
2314 }
cb891a59
KH
2315 strbuf_addf(&sb, "%s\n", quote);
2316
2317 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2318 strbuf_release(&sb);
2319
2320 return success;
10bea152
JS
2321}
2322
4b25d091
FC
2323static ssize_t find_beginning_of_line(const char *contents, size_t size,
2324 size_t offset_, int *found_bracket)
4ddba79d 2325{
dc49cd76
SP
2326 size_t equal_offset = size, bracket_offset = size;
2327 ssize_t offset;
4ddba79d 2328
7a31cc0f 2329contline:
a6080a0a 2330 for (offset = offset_-2; offset > 0
4ddba79d
JS
2331 && contents[offset] != '\n'; offset--)
2332 switch (contents[offset]) {
2333 case '=': equal_offset = offset; break;
2334 case ']': bracket_offset = offset; break;
2335 }
7a31cc0f
FL
2336 if (offset > 0 && contents[offset-1] == '\\') {
2337 offset_ = offset;
2338 goto contline;
2339 }
4ddba79d
JS
2340 if (bracket_offset < equal_offset) {
2341 *found_bracket = 1;
2342 offset = bracket_offset+1;
2343 } else
2344 offset++;
2345
2346 return offset;
2347}
2348
30598ad0
PS
2349int git_config_set_in_file_gently(const char *config_filename,
2350 const char *key, const char *value)
5ec31182 2351{
30598ad0 2352 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
2353}
2354
3d180648
PS
2355void git_config_set_in_file(const char *config_filename,
2356 const char *key, const char *value)
10bea152 2357{
3d180648 2358 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
2359}
2360
30598ad0 2361int git_config_set_gently(const char *key, const char *value)
10bea152 2362{
30598ad0 2363 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
2364}
2365
3d180648 2366void git_config_set(const char *key, const char *value)
b4c8aba6 2367{
3d180648 2368 git_config_set_multivar(key, value, NULL, 0);
10bea152
JS
2369}
2370
2371/*
2372 * If value==NULL, unset in (remove from) config,
2373 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2374 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2375 * (only add a new one)
4ddba79d
JS
2376 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2377 * else all matching key/values (regardless how many) are removed,
2378 * before the new pair is written.
10bea152
JS
2379 *
2380 * Returns 0 on success.
2381 *
2382 * This function does this:
2383 *
2384 * - it locks the config file by creating ".git/config.lock"
2385 *
2386 * - it then parses the config using store_aux() as validator to find
2387 * the position on the key/value pair to replace. If it is to be unset,
2388 * it must be found exactly once.
2389 *
2390 * - the config file is mmap()ed and the part before the match (if any) is
2391 * written to the lock file, then the changed part and the rest.
2392 *
2393 * - the config file is removed and the lock file rename()d to it.
2394 *
2395 */
30598ad0
PS
2396int git_config_set_multivar_in_file_gently(const char *config_filename,
2397 const char *key, const char *value,
2398 const char *value_regex,
2399 int multi_replace)
10bea152 2400{
54d160ec 2401 int fd = -1, in_fd = -1;
dafc88b1 2402 int ret;
6cbf973c 2403 struct lock_file *lock = NULL;
0a5f5759 2404 char *filename_buf = NULL;
3a1b3126
JK
2405 char *contents = NULL;
2406 size_t contents_sz;
4ddba79d 2407
b09c53a3
LP
2408 /* parse-key returns negative; flip the sign to feed exit(3) */
2409 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2410 if (ret)
dafc88b1 2411 goto out_free;
b17e659d
JS
2412
2413 store.multi_replace = multi_replace;
10bea152 2414
0a5f5759
JK
2415 if (!config_filename)
2416 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2417
2418 /*
6cbf973c 2419 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2420 * contents of .git/config will be written into it.
2421 */
f1064f6b 2422 lock = xcalloc(1, sizeof(struct lock_file));
6cbf973c
BS
2423 fd = hold_lock_file_for_update(lock, config_filename, 0);
2424 if (fd < 0) {
f0658ec9 2425 error_errno("could not lock config file %s", config_filename);
10bea152 2426 free(store.key);
7a397419 2427 ret = CONFIG_NO_LOCK;
dafc88b1 2428 goto out_free;
10bea152
JS
2429 }
2430
2431 /*
2432 * If .git/config does not exist yet, write a minimal version.
2433 */
88fb958b
AR
2434 in_fd = open(config_filename, O_RDONLY);
2435 if ( in_fd < 0 ) {
10bea152
JS
2436 free(store.key);
2437
88fb958b 2438 if ( ENOENT != errno ) {
f0658ec9 2439 error_errno("opening %s", config_filename);
7a397419 2440 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2441 goto out_free;
88fb958b 2442 }
10bea152
JS
2443 /* if nothing to unset, error out */
2444 if (value == NULL) {
7a397419 2445 ret = CONFIG_NOTHING_SET;
dafc88b1 2446 goto out_free;
10bea152
JS
2447 }
2448
4b25d091 2449 store.key = (char *)key;
480c9e52 2450 if (!store_write_section(fd, key) ||
93c1e079
JH
2451 !store_write_pair(fd, key, value))
2452 goto write_err_out;
2453 } else {
88fb958b 2454 struct stat st;
3a1b3126 2455 size_t copy_begin, copy_end;
dc49cd76 2456 int i, new_line = 0;
10bea152
JS
2457
2458 if (value_regex == NULL)
2459 store.value_regex = NULL;
c1063be2
JK
2460 else if (value_regex == CONFIG_REGEX_NONE)
2461 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2462 else {
f98d863d
JS
2463 if (value_regex[0] == '!') {
2464 store.do_not_match = 1;
2465 value_regex++;
2466 } else
2467 store.do_not_match = 0;
2468
2d7320d0 2469 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2470 if (regcomp(store.value_regex, value_regex,
2471 REG_EXTENDED)) {
64c0d71c 2472 error("invalid pattern: %s", value_regex);
10bea152 2473 free(store.value_regex);
7a397419 2474 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2475 goto out_free;
10bea152
JS
2476 }
2477 }
2478
83786fa4 2479 ALLOC_GROW(store.offset, 1, store.offset_alloc);
4ddba79d 2480 store.offset[0] = 0;
10bea152
JS
2481 store.state = START;
2482 store.seen = 0;
2483
2484 /*
2485 * After this, store.offset will contain the *end* offset
2486 * of the last match, or remain at 0 if no match was found.
2487 * As a side effect, we make sure to transform only a valid
2488 * existing config file.
2489 */
ef90d6d4 2490 if (git_config_from_file(store_aux, config_filename, NULL)) {
64c0d71c 2491 error("invalid config file %s", config_filename);
10bea152 2492 free(store.key);
c1063be2
JK
2493 if (store.value_regex != NULL &&
2494 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2495 regfree(store.value_regex);
2496 free(store.value_regex);
2497 }
7a397419 2498 ret = CONFIG_INVALID_FILE;
dafc88b1 2499 goto out_free;
10bea152
JS
2500 }
2501
2502 free(store.key);
c1063be2
JK
2503 if (store.value_regex != NULL &&
2504 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2505 regfree(store.value_regex);
2506 free(store.value_regex);
2507 }
2508
4ddba79d
JS
2509 /* if nothing to unset, or too many matches, error out */
2510 if ((store.seen == 0 && value == NULL) ||
2511 (store.seen > 1 && multi_replace == 0)) {
7a397419 2512 ret = CONFIG_NOTHING_SET;
dafc88b1 2513 goto out_free;
10bea152
JS
2514 }
2515
29647d79
NTND
2516 if (fstat(in_fd, &st) == -1) {
2517 error_errno(_("fstat on %s failed"), config_filename);
2518 ret = CONFIG_INVALID_FILE;
2519 goto out_free;
2520 }
2521
dc49cd76 2522 contents_sz = xsize_t(st.st_size);
1570856b
JK
2523 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2524 MAP_PRIVATE, in_fd, 0);
2525 if (contents == MAP_FAILED) {
0e8771f1
JK
2526 if (errno == ENODEV && S_ISDIR(st.st_mode))
2527 errno = EISDIR;
f0658ec9 2528 error_errno("unable to mmap '%s'", config_filename);
1570856b
JK
2529 ret = CONFIG_INVALID_FILE;
2530 contents = NULL;
2531 goto out_free;
2532 }
10bea152 2533 close(in_fd);
54d160ec 2534 in_fd = -1;
10bea152 2535
b4fb09e4 2536 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9 2537 error_errno("chmod on %s failed", get_lock_file_path(lock));
daa22c6f
EW
2538 ret = CONFIG_NO_WRITE;
2539 goto out_free;
2540 }
2541
4ddba79d
JS
2542 if (store.seen == 0)
2543 store.seen = 1;
2544
2545 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2546 if (store.offset[i] == 0) {
dc49cd76 2547 store.offset[i] = copy_end = contents_sz;
4ddba79d
JS
2548 } else if (store.state != KEY_SEEN) {
2549 copy_end = store.offset[i];
10bea152 2550 } else
4ddba79d 2551 copy_end = find_beginning_of_line(
dc49cd76 2552 contents, contents_sz,
4ddba79d
JS
2553 store.offset[i]-2, &new_line);
2554
02e5ba4a
JK
2555 if (copy_end > 0 && contents[copy_end-1] != '\n')
2556 new_line = 1;
2557
4ddba79d
JS
2558 /* write the first part of the config */
2559 if (copy_end > copy_begin) {
93c1e079
JH
2560 if (write_in_full(fd, contents + copy_begin,
2561 copy_end - copy_begin) <
2562 copy_end - copy_begin)
2563 goto write_err_out;
2564 if (new_line &&
2b7ca830 2565 write_str_in_full(fd, "\n") != 1)
93c1e079 2566 goto write_err_out;
4ddba79d
JS
2567 }
2568 copy_begin = store.offset[i];
10bea152
JS
2569 }
2570
10bea152
JS
2571 /* write the pair (value == NULL means unset) */
2572 if (value != NULL) {
93c1e079
JH
2573 if (store.state == START) {
2574 if (!store_write_section(fd, key))
2575 goto write_err_out;
480c9e52 2576 }
93c1e079
JH
2577 if (!store_write_pair(fd, key, value))
2578 goto write_err_out;
10bea152
JS
2579 }
2580
2581 /* write the rest of the config */
dc49cd76 2582 if (copy_begin < contents_sz)
93c1e079 2583 if (write_in_full(fd, contents + copy_begin,
dc49cd76
SP
2584 contents_sz - copy_begin) <
2585 contents_sz - copy_begin)
93c1e079 2586 goto write_err_out;
7a64592c
KB
2587
2588 munmap(contents, contents_sz);
2589 contents = NULL;
10bea152
JS
2590 }
2591
4ed7cd3a 2592 if (commit_lock_file(lock) < 0) {
f0658ec9 2593 error_errno("could not write config file %s", config_filename);
7a397419 2594 ret = CONFIG_NO_WRITE;
e831855e 2595 lock = NULL;
dafc88b1 2596 goto out_free;
10bea152
JS
2597 }
2598
6cbf973c
BS
2599 /*
2600 * lock is committed, so don't try to roll it back below.
2601 * NOTE: Since lockfile.c keeps a linked list of all created
2602 * lock_file structures, it isn't safe to free(lock). It's
2603 * better to just leave it hanging around.
2604 */
2605 lock = NULL;
dafc88b1
SH
2606 ret = 0;
2607
3c8687a7
TA
2608 /* Invalidate the config cache */
2609 git_config_clear();
2610
dafc88b1 2611out_free:
6cbf973c
BS
2612 if (lock)
2613 rollback_lock_file(lock);
0a5f5759 2614 free(filename_buf);
3a1b3126
JK
2615 if (contents)
2616 munmap(contents, contents_sz);
54d160ec
SS
2617 if (in_fd >= 0)
2618 close(in_fd);
dafc88b1 2619 return ret;
93c1e079
JH
2620
2621write_err_out:
b4fb09e4 2622 ret = write_error(get_lock_file_path(lock));
93c1e079
JH
2623 goto out_free;
2624
10bea152
JS
2625}
2626
3d180648
PS
2627void git_config_set_multivar_in_file(const char *config_filename,
2628 const char *key, const char *value,
2629 const char *value_regex, int multi_replace)
b4c8aba6 2630{
1cae428e
JK
2631 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2632 value_regex, multi_replace))
2633 return;
2634 if (value)
8c3ca351 2635 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2636 else
2637 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2638}
2639
30598ad0
PS
2640int git_config_set_multivar_gently(const char *key, const char *value,
2641 const char *value_regex, int multi_replace)
5ec31182 2642{
30598ad0
PS
2643 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2644 multi_replace);
5ec31182
RR
2645}
2646
3d180648
PS
2647void git_config_set_multivar(const char *key, const char *value,
2648 const char *value_regex, int multi_replace)
5ec31182 2649{
3d180648
PS
2650 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2651 multi_replace);
5ec31182
RR
2652}
2653
118f8b24
PB
2654static int section_name_match (const char *buf, const char *name)
2655{
2656 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2657 if (buf[i] != '[')
2658 return 0;
2659 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2660 if (!dot && isspace(buf[i])) {
2661 dot = 1;
2662 if (name[j++] != '.')
2663 break;
2664 for (i++; isspace(buf[i]); i++)
2665 ; /* do nothing */
2666 if (buf[i] != '"')
2667 break;
2668 continue;
2669 }
2670 if (buf[i] == '\\' && dot)
2671 i++;
2672 else if (buf[i] == '"' && dot) {
2673 for (i++; isspace(buf[i]); i++)
2674 ; /* do_nothing */
2675 break;
2676 }
2677 if (buf[i] != name[j++])
2678 break;
2679 }
a4c0d463
AV
2680 if (buf[i] == ']' && name[j] == 0) {
2681 /*
2682 * We match, now just find the right length offset by
2683 * gobbling up any whitespace after it, as well
2684 */
2685 i++;
2686 for (; buf[i] && isspace(buf[i]); i++)
2687 ; /* do nothing */
2688 return i;
2689 }
2690 return 0;
118f8b24
PB
2691}
2692
94a35b1a
JK
2693static int section_name_is_ok(const char *name)
2694{
2695 /* Empty section names are bogus. */
2696 if (!*name)
2697 return 0;
2698
2699 /*
2700 * Before a dot, we must be alphanumeric or dash. After the first dot,
2701 * anything goes, so we can stop checking.
2702 */
2703 for (; *name && *name != '.'; name++)
2704 if (*name != '-' && !isalnum(*name))
2705 return 0;
2706 return 1;
2707}
2708
118f8b24 2709/* if new_name == NULL, the section is removed instead */
42bd39b5
JK
2710int git_config_rename_section_in_file(const char *config_filename,
2711 const char *old_name, const char *new_name)
0667fcfb 2712{
118f8b24 2713 int ret = 0, remove = 0;
42bd39b5 2714 char *filename_buf = NULL;
94a35b1a 2715 struct lock_file *lock;
0667fcfb
JS
2716 int out_fd;
2717 char buf[1024];
4db7dbdb 2718 FILE *config_file = NULL;
daa22c6f 2719 struct stat st;
0667fcfb 2720
94a35b1a
JK
2721 if (new_name && !section_name_is_ok(new_name)) {
2722 ret = error("invalid section name: %s", new_name);
c06fa62d 2723 goto out_no_rollback;
94a35b1a
JK
2724 }
2725
42bd39b5
JK
2726 if (!config_filename)
2727 config_filename = filename_buf = git_pathdup("config");
2728
f1064f6b 2729 lock = xcalloc(1, sizeof(struct lock_file));
0667fcfb 2730 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
fc1905bb 2731 if (out_fd < 0) {
64c0d71c 2732 ret = error("could not lock config file %s", config_filename);
fc1905bb
JH
2733 goto out;
2734 }
0667fcfb 2735
fc1905bb 2736 if (!(config_file = fopen(config_filename, "rb"))) {
11dc1fcb
NTND
2737 ret = warn_on_fopen_errors(config_filename);
2738 if (ret)
2739 goto out;
01ebb9dc 2740 /* no config file means nothing to rename, no error */
6e45b43f 2741 goto commit_and_out;
fc1905bb 2742 }
0667fcfb 2743
29647d79
NTND
2744 if (fstat(fileno(config_file), &st) == -1) {
2745 ret = error_errno(_("fstat on %s failed"), config_filename);
2746 goto out;
2747 }
daa22c6f 2748
b4fb09e4 2749 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9
NTND
2750 ret = error_errno("chmod on %s failed",
2751 get_lock_file_path(lock));
daa22c6f
EW
2752 goto out;
2753 }
2754
0667fcfb
JS
2755 while (fgets(buf, sizeof(buf), config_file)) {
2756 int i;
480c9e52 2757 int length;
9a5abfc7 2758 char *output = buf;
0667fcfb
JS
2759 for (i = 0; buf[i] && isspace(buf[i]); i++)
2760 ; /* do nothing */
2761 if (buf[i] == '[') {
2762 /* it's a section */
a4c0d463
AV
2763 int offset = section_name_match(&buf[i], old_name);
2764 if (offset > 0) {
118f8b24
PB
2765 ret++;
2766 if (new_name == NULL) {
2767 remove = 1;
0667fcfb
JS
2768 continue;
2769 }
0667fcfb 2770 store.baselen = strlen(new_name);
480c9e52 2771 if (!store_write_section(out_fd, new_name)) {
b4fb09e4 2772 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2773 goto out;
2774 }
9a5abfc7
AV
2775 /*
2776 * We wrote out the new section, with
2777 * a newline, now skip the old
2778 * section's length
2779 */
2780 output += offset + i;
2781 if (strlen(output) > 0) {
2782 /*
2783 * More content means there's
2784 * a declaration to put on the
2785 * next line; indent with a
2786 * tab
2787 */
2788 output -= 1;
2789 output[0] = '\t';
2790 }
0667fcfb 2791 }
118f8b24 2792 remove = 0;
0667fcfb 2793 }
118f8b24
PB
2794 if (remove)
2795 continue;
9a5abfc7
AV
2796 length = strlen(output);
2797 if (write_in_full(out_fd, output, length) != length) {
b4fb09e4 2798 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2799 goto out;
2800 }
0667fcfb 2801 }
fc1905bb 2802 fclose(config_file);
4db7dbdb 2803 config_file = NULL;
6e45b43f 2804commit_and_out:
4ed7cd3a 2805 if (commit_lock_file(lock) < 0)
f0658ec9
NTND
2806 ret = error_errno("could not write config file %s",
2807 config_filename);
8b590075 2808out:
4db7dbdb
JS
2809 if (config_file)
2810 fclose(config_file);
c06fa62d
NTND
2811 rollback_lock_file(lock);
2812out_no_rollback:
42bd39b5 2813 free(filename_buf);
0667fcfb
JS
2814 return ret;
2815}
40ea4ed9 2816
42bd39b5
JK
2817int git_config_rename_section(const char *old_name, const char *new_name)
2818{
4a7bb5ba 2819 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
2820}
2821
40ea4ed9
JH
2822/*
2823 * Call this to report error for your variable that should not
2824 * get a boolean value (i.e. "[my] var" means "true").
2825 */
a469a101 2826#undef config_error_nonbool
40ea4ed9
JH
2827int config_error_nonbool(const char *var)
2828{
8c3ca351 2829 return error("missing value for '%s'", var);
40ea4ed9 2830}
1b86bbb0
JK
2831
2832int parse_config_key(const char *var,
2833 const char *section,
2834 const char **subsection, int *subsection_len,
2835 const char **key)
2836{
1b86bbb0
JK
2837 const char *dot;
2838
2839 /* Does it start with "section." ? */
e3394fdc 2840 if (!skip_prefix(var, section, &var) || *var != '.')
1b86bbb0
JK
2841 return -1;
2842
2843 /*
2844 * Find the key; we don't know yet if we have a subsection, but we must
2845 * parse backwards from the end, since the subsection may have dots in
2846 * it, too.
2847 */
2848 dot = strrchr(var, '.');
2849 *key = dot + 1;
2850
2851 /* Did we have a subsection at all? */
e3394fdc 2852 if (dot == var) {
48f8d9f7
JK
2853 if (subsection) {
2854 *subsection = NULL;
2855 *subsection_len = 0;
2856 }
1b86bbb0
JK
2857 }
2858 else {
48f8d9f7
JK
2859 if (!subsection)
2860 return -1;
e3394fdc 2861 *subsection = var + 1;
1b86bbb0
JK
2862 *subsection_len = dot - *subsection;
2863 }
2864
2865 return 0;
2866}
473166b9
LS
2867
2868const char *current_config_origin_type(void)
2869{
1b8132d9 2870 int type;
0d44a2da
JK
2871 if (current_config_kvi)
2872 type = current_config_kvi->origin_type;
2873 else if(cf)
2874 type = cf->origin_type;
2875 else
3258258f 2876 die("BUG: current_config_origin_type called outside config callback");
1b8132d9
VA
2877
2878 switch (type) {
2879 case CONFIG_ORIGIN_BLOB:
2880 return "blob";
2881 case CONFIG_ORIGIN_FILE:
2882 return "file";
2883 case CONFIG_ORIGIN_STDIN:
2884 return "standard input";
2885 case CONFIG_ORIGIN_SUBMODULE_BLOB:
2886 return "submodule-blob";
2887 case CONFIG_ORIGIN_CMDLINE:
2888 return "command line";
2889 default:
2890 die("BUG: unknown config origin type");
2891 }
473166b9
LS
2892}
2893
2894const char *current_config_name(void)
2895{
0d44a2da
JK
2896 const char *name;
2897 if (current_config_kvi)
2898 name = current_config_kvi->filename;
2899 else if (cf)
2900 name = cf->name;
2901 else
3258258f 2902 die("BUG: current_config_name called outside config callback");
0d44a2da 2903 return name ? name : "";
473166b9 2904}
9acc5911
JK
2905
2906enum config_scope current_config_scope(void)
2907{
2908 if (current_config_kvi)
2909 return current_config_kvi->scope;
2910 else
2911 return current_parsing_scope;
473166b9 2912}