path: add repo_worktree_path and strbuf_repo_worktree_path
[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"
697cc8ef 10#include "lockfile.h"
7f0e39fa 11#include "exec_cmd.h"
572e4f6a 12#include "strbuf.h"
2b64fc89 13#include "quote.h"
3c8687a7
TA
14#include "hashmap.h"
15#include "string-list.h"
599446dc 16#include "utf8.h"
3efd0bed 17#include "dir.h"
17712991 18
4d8dd149
HV
19struct config_source {
20 struct config_source *prev;
21 union {
22 FILE *file;
1bc88819
HV
23 struct config_buf {
24 const char *buf;
25 size_t len;
26 size_t pos;
27 } buf;
4d8dd149 28 } u;
1b8132d9 29 enum config_origin_type origin_type;
924aaf3e 30 const char *name;
d14d4244 31 const char *path;
b2dc0945 32 int die_on_error;
924aaf3e
RJ
33 int linenr;
34 int eof;
35 struct strbuf value;
0971e992 36 struct strbuf var;
924aaf3e 37
49d6cfa5
JK
38 int (*do_fgetc)(struct config_source *c);
39 int (*do_ungetc)(int c, struct config_source *conf);
40 long (*do_ftell)(struct config_source *c);
4d8dd149
HV
41};
42
0d44a2da
JK
43/*
44 * These variables record the "current" config source, which
45 * can be accessed by parsing callbacks.
46 *
47 * The "cf" variable will be non-NULL only when we are actually parsing a real
48 * config source (file, blob, cmdline, etc).
49 *
50 * The "current_config_kvi" variable will be non-NULL only when we are feeding
51 * cached config from a configset into a callback.
52 *
53 * They should generally never be non-NULL at the same time. If they are both
54 * NULL, then we aren't parsing anything (and depending on the function looking
55 * at the variables, it's either a bug for it to be called in the first place,
56 * or it's a function which can be reused for non-config purposes, and should
57 * fall back to some sane behavior).
58 */
4d8dd149 59static struct config_source *cf;
0d44a2da 60static struct key_value_info *current_config_kvi;
924aaf3e 61
9acc5911
JK
62/*
63 * Similar to the variables above, this gives access to the "scope" of the
64 * current value (repo, global, etc). For cached values, it can be found via
65 * the current_config_kvi as above. During parsing, the current value can be
66 * found in this variable. It's not part of "cf" because it transcends a single
67 * file (i.e., a file included from .git/config is still in "repo" scope).
68 */
69static enum config_scope current_parsing_scope;
924aaf3e 70
8de7eeb5
JH
71static int core_compression_seen;
72static int pack_compression_seen;
960ccca6
DH
73static int zlib_compression_seen;
74
3c8687a7
TA
75/*
76 * Default config_set that contains key-value pairs from the usual set of config
77 * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
78 * config file and the global /etc/gitconfig)
79 */
80static struct config_set the_config_set;
81
4d8dd149
HV
82static int config_file_fgetc(struct config_source *conf)
83{
260d408e 84 return getc_unlocked(conf->u.file);
4d8dd149
HV
85}
86
87static int config_file_ungetc(int c, struct config_source *conf)
88{
89 return ungetc(c, conf->u.file);
90}
91
92static long config_file_ftell(struct config_source *conf)
93{
94 return ftell(conf->u.file);
95}
96
1bc88819
HV
97
98static int config_buf_fgetc(struct config_source *conf)
99{
100 if (conf->u.buf.pos < conf->u.buf.len)
101 return conf->u.buf.buf[conf->u.buf.pos++];
102
103 return EOF;
104}
105
106static int config_buf_ungetc(int c, struct config_source *conf)
107{
1d0655c1
JK
108 if (conf->u.buf.pos > 0) {
109 conf->u.buf.pos--;
110 if (conf->u.buf.buf[conf->u.buf.pos] != c)
111 die("BUG: config_buf can only ungetc the same character");
112 return c;
113 }
1bc88819
HV
114
115 return EOF;
116}
117
118static long config_buf_ftell(struct config_source *conf)
119{
120 return conf->u.buf.pos;
121}
122
9b25a0b5
JK
123#define MAX_INCLUDE_DEPTH 10
124static const char include_depth_advice[] =
125"exceeded maximum include depth (%d) while including\n"
126" %s\n"
127"from\n"
128" %s\n"
129"Do you have circular includes?";
130static int handle_path_include(const char *path, struct config_include_data *inc)
131{
132 int ret = 0;
133 struct strbuf buf = STRBUF_INIT;
67beb600 134 char *expanded;
4c0a89fc 135
67beb600
JK
136 if (!path)
137 return config_error_nonbool("include.path");
138
4aad2f16 139 expanded = expand_user_path(path, 0);
4c0a89fc 140 if (!expanded)
8c3ca351 141 return error("could not expand include path '%s'", path);
4c0a89fc 142 path = expanded;
9b25a0b5
JK
143
144 /*
145 * Use an absolute path as-is, but interpret relative paths
146 * based on the including config file.
147 */
148 if (!is_absolute_path(path)) {
149 char *slash;
150
d14d4244 151 if (!cf || !cf->path)
9b25a0b5
JK
152 return error("relative config includes must come from files");
153
d14d4244 154 slash = find_last_dir_sep(cf->path);
9b25a0b5 155 if (slash)
d14d4244 156 strbuf_add(&buf, cf->path, slash - cf->path + 1);
9b25a0b5
JK
157 strbuf_addstr(&buf, path);
158 path = buf.buf;
159 }
160
4698c8fe 161 if (!access_or_die(path, R_OK, 0)) {
9b25a0b5
JK
162 if (++inc->depth > MAX_INCLUDE_DEPTH)
163 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
3258258f
JK
164 !cf ? "<unknown>" :
165 cf->name ? cf->name :
166 "the command line");
9b25a0b5
JK
167 ret = git_config_from_file(git_config_include, path, inc);
168 inc->depth--;
169 }
170 strbuf_release(&buf);
4c0a89fc 171 free(expanded);
9b25a0b5
JK
172 return ret;
173}
174
3efd0bed
NTND
175static int prepare_include_condition_pattern(struct strbuf *pat)
176{
177 struct strbuf path = STRBUF_INIT;
178 char *expanded;
179 int prefix = 0;
180
86f95157 181 expanded = expand_user_path(pat->buf, 1);
3efd0bed
NTND
182 if (expanded) {
183 strbuf_reset(pat);
184 strbuf_addstr(pat, expanded);
185 free(expanded);
186 }
187
188 if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
189 const char *slash;
190
191 if (!cf || !cf->path)
192 return error(_("relative config include "
193 "conditionals must come from files"));
194
86f95157 195 strbuf_realpath(&path, cf->path, 1);
3efd0bed
NTND
196 slash = find_last_dir_sep(path.buf);
197 if (!slash)
198 die("BUG: how is this possible?");
199 strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
200 prefix = slash - path.buf + 1 /* slash */;
201 } else if (!is_absolute_path(pat->buf))
202 strbuf_insert(pat, 0, "**/", 3);
203
204 if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
205 strbuf_addstr(pat, "**");
206
207 strbuf_release(&path);
208 return prefix;
209}
210
2185fde5
NTND
211static int include_by_gitdir(const struct config_options *opts,
212 const char *cond, size_t cond_len, int icase)
3efd0bed
NTND
213{
214 struct strbuf text = STRBUF_INIT;
215 struct strbuf pattern = STRBUF_INIT;
216 int ret = 0, prefix;
2185fde5 217 const char *git_dir;
0624c63c 218 int already_tried_absolute = 0;
3efd0bed 219
2185fde5
NTND
220 if (opts->git_dir)
221 git_dir = opts->git_dir;
2185fde5
NTND
222 else
223 goto done;
224
c9672ba4 225 strbuf_realpath(&text, git_dir, 1);
3efd0bed
NTND
226 strbuf_add(&pattern, cond, cond_len);
227 prefix = prepare_include_condition_pattern(&pattern);
228
0624c63c 229again:
3efd0bed
NTND
230 if (prefix < 0)
231 goto done;
232
233 if (prefix > 0) {
234 /*
235 * perform literal matching on the prefix part so that
236 * any wildcard character in it can't create side effects.
237 */
238 if (text.len < prefix)
239 goto done;
240 if (!icase && strncmp(pattern.buf, text.buf, prefix))
241 goto done;
242 if (icase && strncasecmp(pattern.buf, text.buf, prefix))
243 goto done;
244 }
245
246 ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
247 icase ? WM_CASEFOLD : 0, NULL);
248
0624c63c
ÆAB
249 if (!ret && !already_tried_absolute) {
250 /*
251 * We've tried e.g. matching gitdir:~/work, but if
252 * ~/work is a symlink to /mnt/storage/work
253 * strbuf_realpath() will expand it, so the rule won't
254 * match. Let's match against a
255 * strbuf_add_absolute_path() version of the path,
256 * which'll do the right thing
257 */
258 strbuf_reset(&text);
259 strbuf_add_absolute_path(&text, git_dir);
260 already_tried_absolute = 1;
261 goto again;
262 }
3efd0bed
NTND
263done:
264 strbuf_release(&pattern);
265 strbuf_release(&text);
266 return ret;
267}
268
2185fde5
NTND
269static int include_condition_is_true(const struct config_options *opts,
270 const char *cond, size_t cond_len)
3efd0bed
NTND
271{
272
273 if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
2185fde5 274 return include_by_gitdir(opts, cond, cond_len, 0);
3efd0bed 275 else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
2185fde5 276 return include_by_gitdir(opts, cond, cond_len, 1);
3efd0bed
NTND
277
278 /* unknown conditionals are always false */
279 return 0;
280}
281
9b25a0b5
JK
282int git_config_include(const char *var, const char *value, void *data)
283{
284 struct config_include_data *inc = data;
3efd0bed
NTND
285 const char *cond, *key;
286 int cond_len;
9b25a0b5
JK
287 int ret;
288
289 /*
290 * Pass along all values, including "include" directives; this makes it
291 * possible to query information on the includes themselves.
292 */
293 ret = inc->fn(var, value, inc->data);
294 if (ret < 0)
295 return ret;
296
37007c3a 297 if (!strcmp(var, "include.path"))
9b25a0b5 298 ret = handle_path_include(value, inc);
3efd0bed
NTND
299
300 if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
2185fde5 301 (cond && include_condition_is_true(inc->opts, cond, cond_len)) &&
3efd0bed
NTND
302 !strcmp(key, "path"))
303 ret = handle_path_include(value, inc);
304
9b25a0b5
JK
305 return ret;
306}
307
2b64fc89
JK
308void git_config_push_parameter(const char *text)
309{
310 struct strbuf env = STRBUF_INIT;
311 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
d1f88498 312 if (old && *old) {
2b64fc89
JK
313 strbuf_addstr(&env, old);
314 strbuf_addch(&env, ' ');
315 }
316 sq_quote_buf(&env, text);
317 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
318 strbuf_release(&env);
319}
320
ee98df3f
JH
321static inline int iskeychar(int c)
322{
323 return isalnum(c) || c == '-';
324}
325
326/*
327 * Auxiliary function to sanity-check and split the key into the section
328 * identifier and variable name.
329 *
330 * Returns 0 on success, -1 when there is an invalid character in the key and
331 * -2 if there is no section name in the key.
332 *
333 * store_key - pointer to char* which will hold a copy of the key with
334 * lowercase section and variable name
335 * baselen - pointer to int which will hold the length of the
336 * section + subsection part, can be NULL
337 */
338static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
339{
340 int i, dot, baselen;
341 const char *last_dot = strrchr(key, '.');
342
343 /*
344 * Since "key" actually contains the section name and the real
345 * key name separated by a dot, we have to know where the dot is.
346 */
347
348 if (last_dot == NULL || last_dot == key) {
349 if (!quiet)
350 error("key does not contain a section: %s", key);
351 return -CONFIG_NO_SECTION_OR_NAME;
352 }
353
354 if (!last_dot[1]) {
355 if (!quiet)
356 error("key does not contain variable name: %s", key);
357 return -CONFIG_NO_SECTION_OR_NAME;
358 }
359
360 baselen = last_dot - key;
361 if (baselen_)
362 *baselen_ = baselen;
363
364 /*
365 * Validate the key and while at it, lower case it for matching.
366 */
367 if (store_key)
368 *store_key = xmallocz(strlen(key));
369
370 dot = 0;
371 for (i = 0; key[i]; i++) {
372 unsigned char c = key[i];
373 if (c == '.')
374 dot = 1;
375 /* Leave the extended basename untouched.. */
376 if (!dot || i > baselen) {
377 if (!iskeychar(c) ||
378 (i == baselen + 1 && !isalpha(c))) {
379 if (!quiet)
380 error("invalid key: %s", key);
381 goto out_free_ret_1;
382 }
383 c = tolower(c);
384 } else if (c == '\n') {
385 if (!quiet)
386 error("invalid key (newline): %s", key);
387 goto out_free_ret_1;
388 }
389 if (store_key)
390 (*store_key)[i] = c;
391 }
392
393 return 0;
394
395out_free_ret_1:
396 if (store_key) {
397 free(*store_key);
398 *store_key = NULL;
399 }
400 return -CONFIG_INVALID_KEY;
401}
402
403int git_config_parse_key(const char *key, char **store_key, int *baselen)
404{
405 return git_config_parse_key_1(key, store_key, baselen, 0);
406}
407
408int git_config_key_is_valid(const char *key)
409{
410 return !git_config_parse_key_1(key, NULL, NULL, 1);
411}
412
2496844b
JK
413int git_config_parse_parameter(const char *text,
414 config_fn_t fn, void *data)
8b1fa778 415{
a789ca70 416 const char *value;
1274a155 417 char *canonical_name;
572e4f6a 418 struct strbuf **pair;
1274a155 419 int ret;
a789ca70 420
f77bccae 421 pair = strbuf_split_str(text, '=', 2);
c5d6350b
JK
422 if (!pair[0])
423 return error("bogus config parameter: %s", text);
a789ca70
JH
424
425 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
572e4f6a 426 strbuf_setlen(pair[0], pair[0]->len - 1);
a789ca70
JH
427 value = pair[1] ? pair[1]->buf : "";
428 } else {
429 value = NULL;
430 }
431
572e4f6a
AR
432 strbuf_trim(pair[0]);
433 if (!pair[0]->len) {
434 strbuf_list_free(pair);
06eb708f 435 return error("bogus config parameter: %s", text);
8b1fa778 436 }
1274a155
JH
437
438 if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
439 ret = -1;
440 } else {
441 ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
442 free(canonical_name);
572e4f6a
AR
443 }
444 strbuf_list_free(pair);
1274a155 445 return ret;
8b1fa778
AR
446}
447
06eb708f
JK
448int git_config_from_parameters(config_fn_t fn, void *data)
449{
2b64fc89 450 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
a77d6db6 451 int ret = 0;
2b64fc89
JK
452 char *envw;
453 const char **argv = NULL;
454 int nr = 0, alloc = 0;
455 int i;
3258258f 456 struct config_source source;
2b64fc89
JK
457
458 if (!env)
459 return 0;
3258258f
JK
460
461 memset(&source, 0, sizeof(source));
462 source.prev = cf;
1b8132d9 463 source.origin_type = CONFIG_ORIGIN_CMDLINE;
3258258f
JK
464 cf = &source;
465
2b64fc89
JK
466 /* sq_dequote will write over it */
467 envw = xstrdup(env);
468
469 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
a77d6db6
JK
470 ret = error("bogus format in " CONFIG_DATA_ENVIRONMENT);
471 goto out;
2b64fc89
JK
472 }
473
474 for (i = 0; i < nr; i++) {
06eb708f 475 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
a77d6db6
JK
476 ret = -1;
477 goto out;
2b64fc89
JK
478 }
479 }
480
a77d6db6 481out:
2b64fc89
JK
482 free(argv);
483 free(envw);
3258258f 484 cf = source.prev;
a77d6db6 485 return ret;
2b64fc89
JK
486}
487
17712991
LT
488static int get_next_char(void)
489{
49d6cfa5 490 int c = cf->do_fgetc(cf);
17712991 491
dbb9a812
HV
492 if (c == '\r') {
493 /* DOS like systems */
49d6cfa5 494 c = cf->do_fgetc(cf);
dbb9a812 495 if (c != '\n') {
5e0be134
JK
496 if (c != EOF)
497 cf->do_ungetc(c, cf);
dbb9a812 498 c = '\r';
17712991
LT
499 }
500 }
dbb9a812
HV
501 if (c == '\n')
502 cf->linenr++;
503 if (c == EOF) {
504 cf->eof = 1;
b3b3f60b 505 cf->linenr++;
dbb9a812
HV
506 c = '\n';
507 }
17712991
LT
508 return c;
509}
510
511static char *parse_value(void)
512{
e96c19c5 513 int quote = 0, comment = 0, space = 0;
17712991 514
924aaf3e 515 strbuf_reset(&cf->value);
17712991
LT
516 for (;;) {
517 int c = get_next_char();
17712991 518 if (c == '\n') {
4b340593
MS
519 if (quote) {
520 cf->linenr--;
17712991 521 return NULL;
4b340593 522 }
924aaf3e 523 return cf->value.buf;
17712991
LT
524 }
525 if (comment)
526 continue;
527 if (isspace(c) && !quote) {
924aaf3e 528 if (cf->value.len)
ebdaae37 529 space++;
17712991
LT
530 continue;
531 }
7ebdba61
JS
532 if (!quote) {
533 if (c == ';' || c == '#') {
534 comment = 1;
535 continue;
536 }
537 }
ebdaae37 538 for (; space; space--)
924aaf3e 539 strbuf_addch(&cf->value, ' ');
17712991
LT
540 if (c == '\\') {
541 c = get_next_char();
542 switch (c) {
543 case '\n':
544 continue;
545 case 't':
546 c = '\t';
547 break;
548 case 'b':
549 c = '\b';
550 break;
551 case 'n':
552 c = '\n';
553 break;
5cbb401d
LT
554 /* Some characters escape as themselves */
555 case '\\': case '"':
556 break;
557 /* Reject unknown escape sequences */
558 default:
559 return NULL;
17712991 560 }
924aaf3e 561 strbuf_addch(&cf->value, c);
17712991
LT
562 continue;
563 }
564 if (c == '"') {
565 quote = 1-quote;
566 continue;
567 }
924aaf3e 568 strbuf_addch(&cf->value, c);
17712991
LT
569 }
570}
571
0971e992 572static int get_value(config_fn_t fn, void *data, struct strbuf *name)
17712991
LT
573{
574 int c;
575 char *value;
b3b3f60b 576 int ret;
17712991
LT
577
578 /* Get the full name */
579 for (;;) {
580 c = get_next_char();
924aaf3e 581 if (cf->eof)
17712991 582 break;
38c5afa8 583 if (!iskeychar(c))
17712991 584 break;
0971e992 585 strbuf_addch(name, tolower(c));
17712991 586 }
0971e992 587
17712991
LT
588 while (c == ' ' || c == '\t')
589 c = get_next_char();
590
591 value = NULL;
592 if (c != '\n') {
593 if (c != '=')
594 return -1;
595 value = parse_value();
596 if (!value)
597 return -1;
598 }
b3b3f60b
MM
599 /*
600 * We already consumed the \n, but we need linenr to point to
601 * the line we just parsed during the call to fn to get
602 * accurate line number in error messages.
603 */
604 cf->linenr--;
605 ret = fn(name->buf, value, data);
e2e14251
JS
606 if (ret >= 0)
607 cf->linenr++;
b3b3f60b 608 return ret;
17712991
LT
609}
610
0971e992 611static int get_extended_base_var(struct strbuf *name, int c)
d14f7764
LT
612{
613 do {
614 if (c == '\n')
4b340593 615 goto error_incomplete_line;
d14f7764
LT
616 c = get_next_char();
617 } while (isspace(c));
618
619 /* We require the format to be '[base "extension"]' */
620 if (c != '"')
621 return -1;
0971e992 622 strbuf_addch(name, '.');
d14f7764
LT
623
624 for (;;) {
625 int c = get_next_char();
626 if (c == '\n')
4b340593 627 goto error_incomplete_line;
d14f7764
LT
628 if (c == '"')
629 break;
630 if (c == '\\') {
631 c = get_next_char();
632 if (c == '\n')
4b340593 633 goto error_incomplete_line;
d14f7764 634 }
0971e992 635 strbuf_addch(name, c);
d14f7764
LT
636 }
637
638 /* Final ']' */
639 if (get_next_char() != ']')
640 return -1;
0971e992 641 return 0;
4b340593
MS
642error_incomplete_line:
643 cf->linenr--;
644 return -1;
d14f7764
LT
645}
646
0971e992 647static int get_base_var(struct strbuf *name)
17712991 648{
17712991
LT
649 for (;;) {
650 int c = get_next_char();
924aaf3e 651 if (cf->eof)
17712991
LT
652 return -1;
653 if (c == ']')
0971e992 654 return 0;
d14f7764 655 if (isspace(c))
0971e992 656 return get_extended_base_var(name, c);
38c5afa8 657 if (!iskeychar(c) && c != '.')
17712991 658 return -1;
0971e992 659 strbuf_addch(name, tolower(c));
17712991
LT
660 }
661}
662
4d8dd149 663static int git_parse_source(config_fn_t fn, void *data)
17712991
LT
664{
665 int comment = 0;
666 int baselen = 0;
0971e992 667 struct strbuf *var = &cf->var;
1b8132d9
VA
668 int error_return = 0;
669 char *error_msg = NULL;
17712991 670
de056402 671 /* U+FEFF Byte Order Mark in UTF8 */
599446dc 672 const char *bomptr = utf8_bom;
de056402 673
17712991
LT
674 for (;;) {
675 int c = get_next_char();
de056402
PB
676 if (bomptr && *bomptr) {
677 /* We are at the file beginning; skip UTF8-encoded BOM
678 * if present. Sane editors won't put this in on their
679 * own, but e.g. Windows Notepad will do it happily. */
599446dc 680 if (c == (*bomptr & 0377)) {
de056402
PB
681 bomptr++;
682 continue;
683 } else {
684 /* Do not tolerate partial BOM. */
685 if (bomptr != utf8_bom)
686 break;
687 /* No BOM at file beginning. Cool. */
688 bomptr = NULL;
689 }
690 }
17712991 691 if (c == '\n') {
924aaf3e 692 if (cf->eof)
17712991
LT
693 return 0;
694 comment = 0;
695 continue;
696 }
697 if (comment || isspace(c))
698 continue;
699 if (c == '#' || c == ';') {
700 comment = 1;
701 continue;
702 }
703 if (c == '[') {
0971e992
BW
704 /* Reset prior to determining a new stem */
705 strbuf_reset(var);
706 if (get_base_var(var) < 0 || var->len < 1)
17712991 707 break;
0971e992
BW
708 strbuf_addch(var, '.');
709 baselen = var->len;
17712991
LT
710 continue;
711 }
712 if (!isalpha(c))
713 break;
0971e992
BW
714 /*
715 * Truncate the var name back to the section header
716 * stem prior to grabbing the suffix part of the name
717 * and the value.
718 */
719 strbuf_setlen(var, baselen);
720 strbuf_addch(var, tolower(c));
721 if (get_value(fn, data, var) < 0)
17712991
LT
722 break;
723 }
1b8132d9
VA
724
725 switch (cf->origin_type) {
726 case CONFIG_ORIGIN_BLOB:
727 error_msg = xstrfmt(_("bad config line %d in blob %s"),
728 cf->linenr, cf->name);
729 break;
730 case CONFIG_ORIGIN_FILE:
731 error_msg = xstrfmt(_("bad config line %d in file %s"),
732 cf->linenr, cf->name);
733 break;
734 case CONFIG_ORIGIN_STDIN:
735 error_msg = xstrfmt(_("bad config line %d in standard input"),
736 cf->linenr);
737 break;
738 case CONFIG_ORIGIN_SUBMODULE_BLOB:
739 error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
740 cf->linenr, cf->name);
741 break;
742 case CONFIG_ORIGIN_CMDLINE:
743 error_msg = xstrfmt(_("bad config line %d in command line %s"),
744 cf->linenr, cf->name);
745 break;
746 default:
747 error_msg = xstrfmt(_("bad config line %d in %s"),
748 cf->linenr, cf->name);
749 }
750
b2dc0945 751 if (cf->die_on_error)
1b8132d9 752 die("%s", error_msg);
b2dc0945 753 else
1b8132d9
VA
754 error_return = error("%s", error_msg);
755
756 free(error_msg);
757 return error_return;
17712991
LT
758}
759
ebaa1bd4 760static int parse_unit_factor(const char *end, uintmax_t *val)
0b87b6e0
BD
761{
762 if (!*end)
763 return 1;
c8deb5a1
SP
764 else if (!strcasecmp(end, "k")) {
765 *val *= 1024;
766 return 1;
767 }
768 else if (!strcasecmp(end, "m")) {
769 *val *= 1024 * 1024;
770 return 1;
771 }
772 else if (!strcasecmp(end, "g")) {
773 *val *= 1024 * 1024 * 1024;
774 return 1;
775 }
776 return 0;
0b87b6e0
BD
777}
778
7192777d 779static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
0b87b6e0
BD
780{
781 if (value && *value) {
782 char *end;
ebaa1bd4
NA
783 intmax_t val;
784 uintmax_t uval;
785 uintmax_t factor = 1;
786
787 errno = 0;
788 val = strtoimax(value, &end, 0);
789 if (errno == ERANGE)
790 return 0;
33fdd77e
JK
791 if (!parse_unit_factor(end, &factor)) {
792 errno = EINVAL;
c8deb5a1 793 return 0;
33fdd77e 794 }
83915ba5 795 uval = labs(val);
ebaa1bd4 796 uval *= factor;
83915ba5 797 if (uval > max || labs(val) > uval) {
33fdd77e 798 errno = ERANGE;
ebaa1bd4 799 return 0;
33fdd77e 800 }
ebaa1bd4
NA
801 val *= factor;
802 *ret = val;
0b87b6e0
BD
803 return 1;
804 }
33fdd77e 805 errno = EINVAL;
0b87b6e0
BD
806 return 0;
807}
808
0b4dc661 809static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
17712991
LT
810{
811 if (value && *value) {
812 char *end;
ebaa1bd4
NA
813 uintmax_t val;
814 uintmax_t oldval;
815
816 errno = 0;
817 val = strtoumax(value, &end, 0);
818 if (errno == ERANGE)
819 return 0;
820 oldval = val;
33fdd77e
JK
821 if (!parse_unit_factor(end, &val)) {
822 errno = EINVAL;
c8deb5a1 823 return 0;
33fdd77e
JK
824 }
825 if (val > max || oldval > val) {
826 errno = ERANGE;
ebaa1bd4 827 return 0;
33fdd77e 828 }
c8deb5a1 829 *ret = val;
0b87b6e0 830 return 1;
17712991 831 }
33fdd77e 832 errno = EINVAL;
0b87b6e0
BD
833 return 0;
834}
835
42d194e9 836static int git_parse_int(const char *value, int *ret)
c1867cea 837{
7192777d 838 intmax_t tmp;
42d194e9 839 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
7192777d
JK
840 return 0;
841 *ret = tmp;
842 return 1;
843}
844
00160242
JK
845static int git_parse_int64(const char *value, int64_t *ret)
846{
847 intmax_t tmp;
848 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
849 return 0;
850 *ret = tmp;
851 return 1;
852}
853
7192777d
JK
854int git_parse_ulong(const char *value, unsigned long *ret)
855{
856 uintmax_t tmp;
857 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
858 return 0;
859 *ret = tmp;
860 return 1;
861}
862
37ee680d
DT
863static int git_parse_ssize_t(const char *value, ssize_t *ret)
864{
865 intmax_t tmp;
866 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
867 return 0;
868 *ret = tmp;
869 return 1;
870}
871
06bdc23b 872NORETURN
2f666581 873static void die_bad_number(const char *name, const char *value)
c1867cea 874{
078fe305
JNA
875 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
876
2f666581
JK
877 if (!value)
878 value = "";
879
1b8132d9 880 if (!(cf && cf->name))
078fe305
JNA
881 die(_("bad numeric config value '%s' for '%s': %s"),
882 value, name, error_type);
1b8132d9
VA
883
884 switch (cf->origin_type) {
885 case CONFIG_ORIGIN_BLOB:
078fe305
JNA
886 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
887 value, name, cf->name, error_type);
1b8132d9 888 case CONFIG_ORIGIN_FILE:
078fe305
JNA
889 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
890 value, name, cf->name, error_type);
1b8132d9 891 case CONFIG_ORIGIN_STDIN:
078fe305
JNA
892 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
893 value, name, error_type);
1b8132d9 894 case CONFIG_ORIGIN_SUBMODULE_BLOB:
078fe305
JNA
895 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
896 value, name, cf->name, error_type);
1b8132d9 897 case CONFIG_ORIGIN_CMDLINE:
078fe305
JNA
898 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
899 value, name, cf->name, error_type);
1b8132d9 900 default:
078fe305
JNA
901 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
902 value, name, cf->name, error_type);
1b8132d9 903 }
c1867cea
JK
904}
905
0b87b6e0
BD
906int git_config_int(const char *name, const char *value)
907{
42d194e9
JK
908 int ret;
909 if (!git_parse_int(value, &ret))
2f666581 910 die_bad_number(name, value);
0b87b6e0
BD
911 return ret;
912}
913
00160242
JK
914int64_t git_config_int64(const char *name, const char *value)
915{
916 int64_t ret;
917 if (!git_parse_int64(value, &ret))
918 die_bad_number(name, value);
0b87b6e0
BD
919 return ret;
920}
921
922unsigned long git_config_ulong(const char *name, const char *value)
923{
924 unsigned long ret;
925 if (!git_parse_ulong(value, &ret))
2f666581 926 die_bad_number(name, value);
0b87b6e0 927 return ret;
17712991
LT
928}
929
37ee680d
DT
930ssize_t git_config_ssize_t(const char *name, const char *value)
931{
932 ssize_t ret;
933 if (!git_parse_ssize_t(value, &ret))
934 die_bad_number(name, value);
935 return ret;
936}
937
9a549d43 938int git_parse_maybe_bool(const char *value)
17712991
LT
939{
940 if (!value)
941 return 1;
942 if (!*value)
943 return 0;
8420ccd8
JH
944 if (!strcasecmp(value, "true")
945 || !strcasecmp(value, "yes")
946 || !strcasecmp(value, "on"))
17712991 947 return 1;
8420ccd8
JH
948 if (!strcasecmp(value, "false")
949 || !strcasecmp(value, "no")
950 || !strcasecmp(value, "off"))
17712991 951 return 0;
8420ccd8
JH
952 return -1;
953}
954
b2be2f6a
JK
955int git_config_maybe_bool(const char *name, const char *value)
956{
9a549d43 957 int v = git_parse_maybe_bool(value);
b2be2f6a
JK
958 if (0 <= v)
959 return v;
42d194e9 960 if (git_parse_int(value, &v))
db6195ef 961 return !!v;
b2be2f6a
JK
962 return -1;
963}
964
8420ccd8
JH
965int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
966{
9a549d43 967 int v = git_parse_maybe_bool(value);
8420ccd8
JH
968 if (0 <= v) {
969 *is_bool = 1;
970 return v;
971 }
a53f2ec6 972 *is_bool = 0;
c35b0b58 973 return git_config_int(name, value);
17712991
LT
974}
975
a53f2ec6
JH
976int git_config_bool(const char *name, const char *value)
977{
978 int discard;
c35b0b58 979 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
980}
981
ea5105a5
CC
982int git_config_string(const char **dest, const char *var, const char *value)
983{
984 if (!value)
985 return config_error_nonbool(var);
986 *dest = xstrdup(value);
987 return 0;
988}
989
395de250
MM
990int git_config_pathname(const char **dest, const char *var, const char *value)
991{
992 if (!value)
993 return config_error_nonbool(var);
4aad2f16 994 *dest = expand_user_path(value, 0);
395de250 995 if (!*dest)
8262aaa2 996 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
997 return 0;
998}
999
806e2ad7 1000static int git_default_core_config(const char *var, const char *value)
17712991
LT
1001{
1002 /* This needs a better name */
1003 if (!strcmp(var, "core.filemode")) {
1004 trust_executable_bit = git_config_bool(var, value);
1005 return 0;
1006 }
1ce4790b
AR
1007 if (!strcmp(var, "core.trustctime")) {
1008 trust_ctime = git_config_bool(var, value);
1009 return 0;
1010 }
c1b5d738 1011 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
1012 if (!strcasecmp(value, "default"))
1013 check_stat = 1;
1014 else if (!strcasecmp(value, "minimal"))
1015 check_stat = 0;
1016 }
17712991 1017
9378c161
JH
1018 if (!strcmp(var, "core.quotepath")) {
1019 quote_path_fully = git_config_bool(var, value);
1020 return 0;
1021 }
1022
78a8d641
JS
1023 if (!strcmp(var, "core.symlinks")) {
1024 has_symlinks = git_config_bool(var, value);
1025 return 0;
1026 }
1027
0a9b88b7
LT
1028 if (!strcmp(var, "core.ignorecase")) {
1029 ignore_case = git_config_bool(var, value);
1030 return 0;
1031 }
1032
64589a03
JH
1033 if (!strcmp(var, "core.attributesfile"))
1034 return git_config_pathname(&git_attributes_file, var, value);
1035
867ad08a
ÆAB
1036 if (!strcmp(var, "core.hookspath"))
1037 return git_config_pathname(&git_hooks_path, var, value);
1038
7d1864ce
JH
1039 if (!strcmp(var, "core.bare")) {
1040 is_bare_repository_cfg = git_config_bool(var, value);
1041 return 0;
1042 }
1043
5f73076c
JH
1044 if (!strcmp(var, "core.ignorestat")) {
1045 assume_unchanged = git_config_bool(var, value);
1046 return 0;
1047 }
1048
e388c738
JH
1049 if (!strcmp(var, "core.prefersymlinkrefs")) {
1050 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
1051 return 0;
1052 }
1053
6de08ae6 1054 if (!strcmp(var, "core.logallrefupdates")) {
341fb286
CW
1055 if (value && !strcasecmp(value, "always"))
1056 log_all_ref_updates = LOG_REFS_ALWAYS;
1057 else if (git_config_bool(var, value))
1058 log_all_ref_updates = LOG_REFS_NORMAL;
1059 else
1060 log_all_ref_updates = LOG_REFS_NONE;
6de08ae6
SP
1061 return 0;
1062 }
1063
2f8acdb3
JH
1064 if (!strcmp(var, "core.warnambiguousrefs")) {
1065 warn_ambiguous_refs = git_config_bool(var, value);
1066 return 0;
1067 }
1068
a71f09fe 1069 if (!strcmp(var, "core.abbrev")) {
48d5014d
JH
1070 if (!value)
1071 return config_error_nonbool(var);
1072 if (!strcasecmp(value, "auto"))
1073 default_abbrev = -1;
1074 else {
1075 int abbrev = git_config_int(var, value);
1076 if (abbrev < minimum_abbrev || abbrev > 40)
1077 return error("abbrev length out of range: %d", abbrev);
1078 default_abbrev = abbrev;
1079 }
dce96489
LT
1080 return 0;
1081 }
1082
5b33cb1f
JK
1083 if (!strcmp(var, "core.disambiguate"))
1084 return set_disambiguate_hint_config(var, value);
1085
960ccca6 1086 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
1087 int level = git_config_int(var, value);
1088 if (level == -1)
1089 level = Z_DEFAULT_COMPRESSION;
1090 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1091 die(_("bad zlib compression level %d"), level);
12f6c308 1092 zlib_compression_level = level;
960ccca6
DH
1093 zlib_compression_seen = 1;
1094 return 0;
1095 }
1096
1097 if (!strcmp(var, "core.compression")) {
1098 int level = git_config_int(var, value);
1099 if (level == -1)
1100 level = Z_DEFAULT_COMPRESSION;
1101 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1102 die(_("bad zlib compression level %d"), level);
960ccca6
DH
1103 core_compression_level = level;
1104 core_compression_seen = 1;
1105 if (!zlib_compression_seen)
1106 zlib_compression_level = level;
8de7eeb5
JH
1107 if (!pack_compression_seen)
1108 pack_compression_level = level;
12f6c308
JBH
1109 return 0;
1110 }
1111
60bb8b14 1112 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 1113 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 1114 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
1115
1116 /* This value must be multiple of (pagesize * 2) */
1117 packed_git_window_size /= pgsz_x2;
1118 if (packed_git_window_size < 1)
1119 packed_git_window_size = 1;
1120 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
1121 return 0;
1122 }
1123
15366280 1124 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 1125 big_file_threshold = git_config_ulong(var, value);
15366280
JH
1126 return 0;
1127 }
1128
77ccc5bb 1129 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 1130 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
1131 return 0;
1132 }
1133
18bdec11 1134 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 1135 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
1136 return 0;
1137 }
1138
6c510bee 1139 if (!strcmp(var, "core.autocrlf")) {
d7f46334 1140 if (value && !strcasecmp(value, "input")) {
fd6cce9e 1141 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
1142 return 0;
1143 }
6c510bee
LT
1144 auto_crlf = git_config_bool(var, value);
1145 return 0;
1146 }
1147
21e5ad50
SP
1148 if (!strcmp(var, "core.safecrlf")) {
1149 if (value && !strcasecmp(value, "warn")) {
1150 safe_crlf = SAFE_CRLF_WARN;
1151 return 0;
1152 }
1153 safe_crlf = git_config_bool(var, value);
1154 return 0;
1155 }
1156
942e7747
EB
1157 if (!strcmp(var, "core.eol")) {
1158 if (value && !strcasecmp(value, "lf"))
ec70f52f 1159 core_eol = EOL_LF;
942e7747 1160 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 1161 core_eol = EOL_CRLF;
942e7747 1162 else if (value && !strcasecmp(value, "native"))
ec70f52f 1163 core_eol = EOL_NATIVE;
942e7747 1164 else
ec70f52f 1165 core_eol = EOL_UNSET;
942e7747
EB
1166 return 0;
1167 }
1168
a97a7468
JS
1169 if (!strcmp(var, "core.notesref")) {
1170 notes_ref_name = xstrdup(value);
1171 return 0;
1172 }
1173
806e2ad7
LT
1174 if (!strcmp(var, "core.editor"))
1175 return git_config_string(&editor_program, var, value);
1176
eff80a9f 1177 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
1178 if (!value)
1179 return config_error_nonbool(var);
ad524f83 1180 else if (!strcasecmp(value, "auto"))
84c9dc2c 1181 auto_comment_line_char = 1;
ad524f83 1182 else if (value[0] && !value[1]) {
649409b7 1183 comment_line_char = value[0];
84c9dc2c 1184 auto_comment_line_char = 0;
50b54fd7
NTND
1185 } else
1186 return error("core.commentChar should only be one character");
1187 return 0;
eff80a9f
JH
1188 }
1189
d3e7da89
AK
1190 if (!strcmp(var, "core.askpass"))
1191 return git_config_string(&askpass_program, var, value);
1192
806e2ad7 1193 if (!strcmp(var, "core.excludesfile"))
395de250 1194 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
1195
1196 if (!strcmp(var, "core.whitespace")) {
1197 if (!value)
1198 return config_error_nonbool(var);
1199 whitespace_rule_cfg = parse_whitespace_rule(value);
1200 return 0;
1201 }
1202
aafe9fba
LT
1203 if (!strcmp(var, "core.fsyncobjectfiles")) {
1204 fsync_object_files = git_config_bool(var, value);
1205 return 0;
1206 }
1207
671c9b7e
LT
1208 if (!strcmp(var, "core.preloadindex")) {
1209 core_preload_index = git_config_bool(var, value);
1210 return 0;
1211 }
1212
348df166
JS
1213 if (!strcmp(var, "core.createobject")) {
1214 if (!strcmp(value, "rename"))
1215 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1216 else if (!strcmp(value, "link"))
1217 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1218 else
8262aaa2 1219 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
1220 return 0;
1221 }
1222
08aefc9e
NTND
1223 if (!strcmp(var, "core.sparsecheckout")) {
1224 core_apply_sparse_checkout = git_config_bool(var, value);
1225 return 0;
1226 }
1227
76759c7d
TB
1228 if (!strcmp(var, "core.precomposeunicode")) {
1229 precomposed_unicode = git_config_bool(var, value);
1230 return 0;
1231 }
1232
a42643aa
JK
1233 if (!strcmp(var, "core.protecthfs")) {
1234 protect_hfs = git_config_bool(var, value);
1235 return 0;
1236 }
1237
2b4c6efc
JS
1238 if (!strcmp(var, "core.protectntfs")) {
1239 protect_ntfs = git_config_bool(var, value);
1240 return 0;
76759c7d
TB
1241 }
1242
f30afdab
JS
1243 if (!strcmp(var, "core.hidedotfiles")) {
1244 if (value && !strcasecmp(value, "dotgitonly"))
1245 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
1246 else
1247 hide_dotfiles = git_config_bool(var, value);
1248 return 0;
1249 }
1250
806e2ad7
LT
1251 /* Add other config variables here and to Documentation/config.txt. */
1252 return 0;
1253}
1254
1141f492 1255static int git_default_i18n_config(const char *var, const char *value)
d1364529 1256{
ea5105a5
CC
1257 if (!strcmp(var, "i18n.commitencoding"))
1258 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 1259
ea5105a5
CC
1260 if (!strcmp(var, "i18n.logoutputencoding"))
1261 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 1262
1141f492
LT
1263 /* Add other config variables here and to Documentation/config.txt. */
1264 return 0;
1265}
039bc64e 1266
1141f492
LT
1267static int git_default_branch_config(const char *var, const char *value)
1268{
9ed36cfa
JS
1269 if (!strcmp(var, "branch.autosetupmerge")) {
1270 if (value && !strcasecmp(value, "always")) {
1271 git_branch_track = BRANCH_TRACK_ALWAYS;
1272 return 0;
1273 }
1274 git_branch_track = git_config_bool(var, value);
1275 return 0;
1276 }
c998ae9b
DS
1277 if (!strcmp(var, "branch.autosetuprebase")) {
1278 if (!value)
1279 return config_error_nonbool(var);
1280 else if (!strcmp(value, "never"))
1281 autorebase = AUTOREBASE_NEVER;
1282 else if (!strcmp(value, "local"))
1283 autorebase = AUTOREBASE_LOCAL;
1284 else if (!strcmp(value, "remote"))
1285 autorebase = AUTOREBASE_REMOTE;
1286 else if (!strcmp(value, "always"))
1287 autorebase = AUTOREBASE_ALWAYS;
1288 else
8c3ca351 1289 return error("malformed value for %s", var);
c998ae9b
DS
1290 return 0;
1291 }
a9cc857a 1292
1ab661dd 1293 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
1294 return 0;
1295}
1296
52153747
FAG
1297static int git_default_push_config(const char *var, const char *value)
1298{
1299 if (!strcmp(var, "push.default")) {
1300 if (!value)
1301 return config_error_nonbool(var);
1302 else if (!strcmp(value, "nothing"))
1303 push_default = PUSH_DEFAULT_NOTHING;
1304 else if (!strcmp(value, "matching"))
1305 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
1306 else if (!strcmp(value, "simple"))
1307 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
1308 else if (!strcmp(value, "upstream"))
1309 push_default = PUSH_DEFAULT_UPSTREAM;
1310 else if (!strcmp(value, "tracking")) /* deprecated */
1311 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
1312 else if (!strcmp(value, "current"))
1313 push_default = PUSH_DEFAULT_CURRENT;
1314 else {
8c3ca351 1315 error("malformed value for %s: %s", var, value);
b55e6775
MM
1316 return error("Must be one of nothing, matching, simple, "
1317 "upstream or current.");
52153747
FAG
1318 }
1319 return 0;
1320 }
1321
1322 /* Add other config variables here and to Documentation/config.txt. */
1323 return 0;
1324}
1325
d551a488
MSO
1326static int git_default_mailmap_config(const char *var, const char *value)
1327{
1328 if (!strcmp(var, "mailmap.file"))
9352fd57 1329 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
1330 if (!strcmp(var, "mailmap.blob"))
1331 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
1332
1333 /* Add other config variables here and to Documentation/config.txt. */
1334 return 0;
1335}
1336
1141f492
LT
1337int git_default_config(const char *var, const char *value, void *dummy)
1338{
59556548 1339 if (starts_with(var, "core."))
1141f492
LT
1340 return git_default_core_config(var, value);
1341
59556548 1342 if (starts_with(var, "user."))
9597921b 1343 return git_ident_config(var, value, dummy);
1141f492 1344
59556548 1345 if (starts_with(var, "i18n."))
1141f492
LT
1346 return git_default_i18n_config(var, value);
1347
59556548 1348 if (starts_with(var, "branch."))
1141f492
LT
1349 return git_default_branch_config(var, value);
1350
59556548 1351 if (starts_with(var, "push."))
52153747
FAG
1352 return git_default_push_config(var, value);
1353
59556548 1354 if (starts_with(var, "mailmap."))
d551a488
MSO
1355 return git_default_mailmap_config(var, value);
1356
59556548 1357 if (starts_with(var, "advice."))
75194438
JK
1358 return git_default_advice_config(var, value);
1359
1141f492
LT
1360 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1361 pager_use_color = git_config_bool(var,value);
1362 return 0;
1363 }
1364
568508e7
JH
1365 if (!strcmp(var, "pack.packsizelimit")) {
1366 pack_size_limit_cfg = git_config_ulong(var, value);
1367 return 0;
1368 }
8de7eeb5
JH
1369
1370 if (!strcmp(var, "pack.compression")) {
1371 int level = git_config_int(var, value);
1372 if (level == -1)
1373 level = Z_DEFAULT_COMPRESSION;
1374 else if (level < 0 || level > Z_BEST_COMPRESSION)
1375 die(_("bad pack compression level %d"), level);
1376 pack_compression_level = level;
1377 pack_compression_seen = 1;
1378 return 0;
1379 }
1380
1141f492
LT
1381 /* Add other config variables here and to Documentation/config.txt. */
1382 return 0;
1383}
1384
ca4b5de2 1385/*
b2dc0945 1386 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1387 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1388 * this function.
1389 */
4d8dd149 1390static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
ca4b5de2
HV
1391{
1392 int ret;
1393
1394 /* push config-file parsing state stack */
1395 top->prev = cf;
1396 top->linenr = 1;
1397 top->eof = 0;
1398 strbuf_init(&top->value, 1024);
1399 strbuf_init(&top->var, 1024);
1400 cf = top;
1401
4d8dd149 1402 ret = git_parse_source(fn, data);
ca4b5de2
HV
1403
1404 /* pop config-file parsing state stack */
1405 strbuf_release(&top->value);
1406 strbuf_release(&top->var);
1407 cf = top->prev;
1408
1409 return ret;
1410}
1411
3caec73b 1412static int do_config_from_file(config_fn_t fn,
1b8132d9
VA
1413 const enum config_origin_type origin_type,
1414 const char *name, const char *path, FILE *f,
473166b9 1415 void *data)
17712991 1416{
3caec73b 1417 struct config_source top;
17712991 1418
3caec73b 1419 top.u.file = f;
473166b9 1420 top.origin_type = origin_type;
3caec73b
KS
1421 top.name = name;
1422 top.path = path;
1423 top.die_on_error = 1;
1424 top.do_fgetc = config_file_fgetc;
1425 top.do_ungetc = config_file_ungetc;
1426 top.do_ftell = config_file_ftell;
924aaf3e 1427
3caec73b
KS
1428 return do_config_from(&top, fn, data);
1429}
924aaf3e 1430
3caec73b
KS
1431static int git_config_from_stdin(config_fn_t fn, void *data)
1432{
1b8132d9 1433 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin, data);
3caec73b
KS
1434}
1435
1436int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1437{
1438 int ret = -1;
1439 FILE *f;
924aaf3e 1440
e9d983f1 1441 f = fopen_or_warn(filename, "r");
3caec73b 1442 if (f) {
260d408e 1443 flockfile(f);
1b8132d9 1444 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename, filename, f, data);
260d408e 1445 funlockfile(f);
17712991
LT
1446 fclose(f);
1447 }
1448 return ret;
1449}
10bea152 1450
1b8132d9 1451int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_type,
473166b9 1452 const char *name, const char *buf, size_t len, void *data)
1bc88819
HV
1453{
1454 struct config_source top;
1455
1456 top.u.buf.buf = buf;
1457 top.u.buf.len = len;
1458 top.u.buf.pos = 0;
473166b9 1459 top.origin_type = origin_type;
1bc88819 1460 top.name = name;
d14d4244 1461 top.path = NULL;
b2dc0945 1462 top.die_on_error = 0;
49d6cfa5
JK
1463 top.do_fgetc = config_buf_fgetc;
1464 top.do_ungetc = config_buf_ungetc;
1465 top.do_ftell = config_buf_ftell;
1bc88819
HV
1466
1467 return do_config_from(&top, fn, data);
1468}
1469
9ebf689a
BW
1470int git_config_from_blob_sha1(config_fn_t fn,
1471 const char *name,
1472 const unsigned char *sha1,
1473 void *data)
1bc88819
HV
1474{
1475 enum object_type type;
1476 char *buf;
1477 unsigned long size;
1478 int ret;
1479
1480 buf = read_sha1_file(sha1, &type, &size);
1481 if (!buf)
1482 return error("unable to load config blob object '%s'", name);
1483 if (type != OBJ_BLOB) {
1484 free(buf);
1485 return error("reference '%s' does not point to a blob", name);
1486 }
1487
1b8132d9 1488 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size, data);
1bc88819
HV
1489 free(buf);
1490
1491 return ret;
1492}
1493
1494static int git_config_from_blob_ref(config_fn_t fn,
1495 const char *name,
1496 void *data)
1497{
1498 unsigned char sha1[20];
1499
1500 if (get_sha1(name, sha1) < 0)
1501 return error("unable to resolve config blob '%s'", name);
1502 return git_config_from_blob_sha1(fn, name, sha1, data);
1503}
1504
506b17b1
JS
1505const char *git_etc_gitconfig(void)
1506{
7f0e39fa 1507 static const char *system_wide;
2de9de5e
SP
1508 if (!system_wide)
1509 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1510 return system_wide;
506b17b1
JS
1511}
1512
23b0c478
SP
1513/*
1514 * Parse environment variable 'k' as a boolean (in various
1515 * possible spellings); if missing, use the default value 'def'.
1516 */
0ef37164 1517int git_env_bool(const char *k, int def)
ab88c363
JK
1518{
1519 const char *v = getenv(k);
1520 return v ? git_config_bool(k, v) : def;
1521}
1522
23b0c478
SP
1523/*
1524 * Parse environment variable 'k' as ulong with possibly a unit
1525 * suffix; if missing, use the default value 'val'.
1526 */
1527unsigned long git_env_ulong(const char *k, unsigned long val)
1528{
1529 const char *v = getenv(k);
1530 if (v && !git_parse_ulong(v, &val))
1531 die("failed to parse %s", k);
1532 return val;
1533}
1534
ab88c363
JK
1535int git_config_system(void)
1536{
1537 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1538}
1539
e145a0bc
NTND
1540static int do_git_config_sequence(const struct config_options *opts,
1541 config_fn_t fn, void *data)
4f629539 1542{
c72ee44b 1543 int ret = 0;
509adc33 1544 char *xdg_config = xdg_config_home("config");
4aad2f16 1545 char *user_config = expand_user_path("~/.gitconfig", 0);
e145a0bc
NTND
1546 char *repo_config;
1547
a577fb5f
BW
1548 if (opts->commondir)
1549 repo_config = mkpathdup("%s/config", opts->commondir);
e145a0bc
NTND
1550 else
1551 repo_config = NULL;
5f1a63e0 1552
9acc5911 1553 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
c72ee44b 1554 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
dc871831
DB
1555 ret += git_config_from_file(fn, git_etc_gitconfig(),
1556 data);
5f1a63e0 1557
9acc5911 1558 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
c72ee44b 1559 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1560 ret += git_config_from_file(fn, xdg_config, data);
21cf3227 1561
c72ee44b 1562 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1563 ret += git_config_from_file(fn, user_config, data);
5f1a63e0 1564
9acc5911 1565 current_parsing_scope = CONFIG_SCOPE_REPO;
c72ee44b 1566 if (repo_config && !access_or_die(repo_config, R_OK, 0))
aa387407 1567 ret += git_config_from_file(fn, repo_config, data);
8b1fa778 1568
9acc5911 1569 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
c72ee44b 1570 if (git_config_from_parameters(fn, data) < 0)
8262aaa2 1571 die(_("unable to parse command-line config"));
8b1fa778 1572
9acc5911 1573 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
21cf3227
HKNN
1574 free(xdg_config);
1575 free(user_config);
80181868 1576 free(repo_config);
c72ee44b 1577 return ret;
4f629539
JH
1578}
1579
dc8441fd
BW
1580int config_with_options(config_fn_t fn, void *data,
1581 struct git_config_source *config_source,
1582 const struct config_options *opts)
dbdf5854 1583{
9b25a0b5
JK
1584 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1585
c48f4b37 1586 if (opts->respect_includes) {
9b25a0b5
JK
1587 inc.fn = fn;
1588 inc.data = data;
c48f4b37 1589 inc.opts = opts;
9b25a0b5
JK
1590 fn = git_config_include;
1591 data = &inc;
1592 }
dbdf5854 1593
c9b5e2a5
JK
1594 /*
1595 * If we have a specific filename, use it. Otherwise, follow the
1596 * regular lookup sequence.
1597 */
3caec73b
KS
1598 if (config_source && config_source->use_stdin)
1599 return git_config_from_stdin(fn, data);
1600 else if (config_source && config_source->file)
c8985ce0
KS
1601 return git_config_from_file(fn, config_source->file, data);
1602 else if (config_source && config_source->blob)
1603 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1604
e145a0bc 1605 return do_git_config_sequence(opts, fn, data);
dbdf5854
NTND
1606}
1607
155ef25f 1608static void git_config_raw(config_fn_t fn, void *data)
c9b5e2a5 1609{
c48f4b37
NTND
1610 struct config_options opts = {0};
1611
1612 opts.respect_includes = 1;
dc8441fd
BW
1613 if (have_git_dir()) {
1614 opts.commondir = get_git_common_dir();
1615 opts.git_dir = get_git_dir();
1616 }
1617
1618 if (config_with_options(fn, data, NULL, &opts) < 0)
aace4385 1619 /*
dc8441fd 1620 * config_with_options() normally returns only
c72ee44b 1621 * zero, as most errors are fatal, and
aace4385
TA
1622 * non-fatal potential errors are guarded by "if"
1623 * statements that are entered only when no error is
1624 * possible.
1625 *
1626 * If we ever encounter a non-fatal error, it means
1627 * something went really wrong and we should stop
1628 * immediately.
1629 */
3a39f61e 1630 die(_("unknown error occurred while reading the configuration files"));
c9b5e2a5
JK
1631}
1632
155ef25f 1633static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1634{
155ef25f
TA
1635 int i, value_index;
1636 struct string_list *values;
1637 struct config_set_element *entry;
1638 struct configset_list *list = &cs->list;
155ef25f
TA
1639
1640 for (i = 0; i < list->nr; i++) {
1641 entry = list->items[i].e;
1642 value_index = list->items[i].value_index;
1643 values = &entry->value_list;
0d44a2da
JK
1644
1645 current_config_kvi = values->items[value_index].util;
1646
1647 if (fn(entry->key, values->items[value_index].string, data) < 0)
1648 git_die_config_linenr(entry->key,
1649 current_config_kvi->filename,
1650 current_config_kvi->linenr);
1651
1652 current_config_kvi = NULL;
155ef25f
TA
1653 }
1654}
1655
0654aa57
JS
1656void read_early_config(config_fn_t cb, void *data)
1657{
c48f4b37 1658 struct config_options opts = {0};
d3fb71b3
BW
1659 struct strbuf commondir = STRBUF_INIT;
1660 struct strbuf gitdir = STRBUF_INIT;
1a27409a 1661
c48f4b37 1662 opts.respect_includes = 1;
0654aa57 1663
a577fb5f
BW
1664 if (have_git_dir()) {
1665 opts.commondir = get_git_common_dir();
2185fde5 1666 opts.git_dir = get_git_dir();
0654aa57 1667 /*
1a27409a
JS
1668 * When setup_git_directory() was not yet asked to discover the
1669 * GIT_DIR, we ask discover_git_directory() to figure out whether there
1670 * is any repository config we should use (but unlike
1671 * setup_git_directory_gently(), no global state is changed, most
1672 * notably, the current working directory is still the same after the
1673 * call).
0654aa57 1674 */
a577fb5f
BW
1675 } else if (!discover_git_directory(&commondir, &gitdir)) {
1676 opts.commondir = commondir.buf;
d3fb71b3 1677 opts.git_dir = gitdir.buf;
a577fb5f 1678 }
2185fde5 1679
dc8441fd 1680 config_with_options(cb, data, NULL, &opts);
0654aa57 1681
d3fb71b3
BW
1682 strbuf_release(&commondir);
1683 strbuf_release(&gitdir);
0654aa57
JS
1684}
1685
155ef25f
TA
1686static void git_config_check_init(void);
1687
1688void git_config(config_fn_t fn, void *data)
1689{
1690 git_config_check_init();
1691 configset_iter(&the_config_set, fn, data);
c9b5e2a5
JK
1692}
1693
3c8687a7
TA
1694static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1695{
1696 struct config_set_element k;
1697 struct config_set_element *found_entry;
1698 char *normalized_key;
3c8687a7
TA
1699 /*
1700 * `key` may come from the user, so normalize it before using it
1701 * for querying entries from the hashmap.
1702 */
270cd9ea 1703 if (git_config_parse_key(key, &normalized_key, NULL))
3c8687a7
TA
1704 return NULL;
1705
1706 hashmap_entry_init(&k, strhash(normalized_key));
1707 k.key = normalized_key;
1708 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1709 free(normalized_key);
1710 return found_entry;
1711}
1712
1713static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1714{
1715 struct config_set_element *e;
3df8fd62 1716 struct string_list_item *si;
155ef25f 1717 struct configset_list_item *l_item;
3df8fd62
TA
1718 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1719
3c8687a7
TA
1720 e = configset_find_element(cs, key);
1721 /*
1722 * Since the keys are being fed by git_config*() callback mechanism, they
1723 * are already normalized. So simply add them without any further munging.
1724 */
1725 if (!e) {
1726 e = xmalloc(sizeof(*e));
1727 hashmap_entry_init(e, strhash(key));
1728 e->key = xstrdup(key);
1729 string_list_init(&e->value_list, 1);
1730 hashmap_add(&cs->config_hash, e);
1731 }
8c53f071 1732 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1733
1734 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1735 l_item = &cs->list.items[cs->list.nr++];
1736 l_item->e = e;
1737 l_item->value_index = e->value_list.nr - 1;
1738
3258258f
JK
1739 if (!cf)
1740 die("BUG: configset_add_value has no source");
1741 if (cf->name) {
3df8fd62
TA
1742 kv_info->filename = strintern(cf->name);
1743 kv_info->linenr = cf->linenr;
1b8132d9 1744 kv_info->origin_type = cf->origin_type;
3df8fd62
TA
1745 } else {
1746 /* for values read from `git_config_from_parameters()` */
1747 kv_info->filename = NULL;
1748 kv_info->linenr = -1;
1b8132d9 1749 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
3df8fd62 1750 }
9acc5911 1751 kv_info->scope = current_parsing_scope;
3df8fd62 1752 si->util = kv_info;
3c8687a7
TA
1753
1754 return 0;
1755}
1756
1757static int config_set_element_cmp(const struct config_set_element *e1,
1758 const struct config_set_element *e2, const void *unused)
1759{
1760 return strcmp(e1->key, e2->key);
1761}
1762
1763void git_configset_init(struct config_set *cs)
1764{
1765 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1766 cs->hash_initialized = 1;
155ef25f
TA
1767 cs->list.nr = 0;
1768 cs->list.alloc = 0;
1769 cs->list.items = NULL;
3c8687a7
TA
1770}
1771
1772void git_configset_clear(struct config_set *cs)
1773{
1774 struct config_set_element *entry;
1775 struct hashmap_iter iter;
1776 if (!cs->hash_initialized)
1777 return;
1778
1779 hashmap_iter_init(&cs->config_hash, &iter);
1780 while ((entry = hashmap_iter_next(&iter))) {
1781 free(entry->key);
3df8fd62 1782 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1783 }
1784 hashmap_free(&cs->config_hash, 1);
1785 cs->hash_initialized = 0;
155ef25f
TA
1786 free(cs->list.items);
1787 cs->list.nr = 0;
1788 cs->list.alloc = 0;
1789 cs->list.items = NULL;
3c8687a7
TA
1790}
1791
1792static int config_set_callback(const char *key, const char *value, void *cb)
1793{
1794 struct config_set *cs = cb;
1795 configset_add_value(cs, key, value);
1796 return 0;
1797}
1798
1799int git_configset_add_file(struct config_set *cs, const char *filename)
1800{
1801 return git_config_from_file(config_set_callback, filename, cs);
1802}
1803
1804int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1805{
1806 const struct string_list *values = NULL;
1807 /*
1808 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1809 * queried key in the files of the configset, the value returned will be the last
1810 * value in the value list for that key.
1811 */
1812 values = git_configset_get_value_multi(cs, key);
1813
1814 if (!values)
1815 return 1;
1816 assert(values->nr > 0);
1817 *value = values->items[values->nr - 1].string;
1818 return 0;
1819}
1820
1821const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1822{
1823 struct config_set_element *e = configset_find_element(cs, key);
1824 return e ? &e->value_list : NULL;
1825}
1826
1827int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1828{
1829 const char *value;
1830 if (!git_configset_get_value(cs, key, &value))
1831 return git_config_string(dest, key, value);
1832 else
1833 return 1;
1834}
1835
1836int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1837{
1838 return git_configset_get_string_const(cs, key, (const char **)dest);
1839}
1840
1841int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1842{
1843 const char *value;
1844 if (!git_configset_get_value(cs, key, &value)) {
1845 *dest = git_config_int(key, value);
1846 return 0;
1847 } else
1848 return 1;
1849}
1850
1851int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1852{
1853 const char *value;
1854 if (!git_configset_get_value(cs, key, &value)) {
1855 *dest = git_config_ulong(key, value);
1856 return 0;
1857 } else
1858 return 1;
1859}
1860
1861int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1862{
1863 const char *value;
1864 if (!git_configset_get_value(cs, key, &value)) {
1865 *dest = git_config_bool(key, value);
1866 return 0;
1867 } else
1868 return 1;
1869}
1870
1871int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1872 int *is_bool, int *dest)
1873{
1874 const char *value;
1875 if (!git_configset_get_value(cs, key, &value)) {
1876 *dest = git_config_bool_or_int(key, value, is_bool);
1877 return 0;
1878 } else
1879 return 1;
1880}
1881
1882int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1883{
1884 const char *value;
1885 if (!git_configset_get_value(cs, key, &value)) {
1886 *dest = git_config_maybe_bool(key, value);
1887 if (*dest == -1)
1888 return -1;
1889 return 0;
1890 } else
1891 return 1;
1892}
1893
1894int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1895{
1896 const char *value;
1897 if (!git_configset_get_value(cs, key, &value))
1898 return git_config_pathname(dest, key, value);
1899 else
1900 return 1;
1901}
1902
1903static void git_config_check_init(void)
1904{
1905 if (the_config_set.hash_initialized)
1906 return;
1907 git_configset_init(&the_config_set);
155ef25f 1908 git_config_raw(config_set_callback, &the_config_set);
3c8687a7
TA
1909}
1910
1911void git_config_clear(void)
1912{
1913 if (!the_config_set.hash_initialized)
1914 return;
1915 git_configset_clear(&the_config_set);
1916}
1917
1918int git_config_get_value(const char *key, const char **value)
1919{
1920 git_config_check_init();
1921 return git_configset_get_value(&the_config_set, key, value);
1922}
1923
1924const struct string_list *git_config_get_value_multi(const char *key)
1925{
1926 git_config_check_init();
1927 return git_configset_get_value_multi(&the_config_set, key);
1928}
1929
1930int git_config_get_string_const(const char *key, const char **dest)
1931{
5a80e97c 1932 int ret;
3c8687a7 1933 git_config_check_init();
5a80e97c
TA
1934 ret = git_configset_get_string_const(&the_config_set, key, dest);
1935 if (ret < 0)
1936 git_die_config(key, NULL);
1937 return ret;
3c8687a7
TA
1938}
1939
1940int git_config_get_string(const char *key, char **dest)
1941{
1942 git_config_check_init();
1943 return git_config_get_string_const(key, (const char **)dest);
1944}
1945
1946int git_config_get_int(const char *key, int *dest)
1947{
1948 git_config_check_init();
1949 return git_configset_get_int(&the_config_set, key, dest);
1950}
1951
1952int git_config_get_ulong(const char *key, unsigned long *dest)
1953{
1954 git_config_check_init();
1955 return git_configset_get_ulong(&the_config_set, key, dest);
1956}
1957
1958int git_config_get_bool(const char *key, int *dest)
1959{
1960 git_config_check_init();
1961 return git_configset_get_bool(&the_config_set, key, dest);
1962}
1963
1964int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1965{
1966 git_config_check_init();
1967 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1968}
1969
1970int git_config_get_maybe_bool(const char *key, int *dest)
1971{
1972 git_config_check_init();
1973 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1974}
1975
1976int git_config_get_pathname(const char *key, const char **dest)
1977{
5a80e97c 1978 int ret;
3c8687a7 1979 git_config_check_init();
5a80e97c
TA
1980 ret = git_configset_get_pathname(&the_config_set, key, dest);
1981 if (ret < 0)
1982 git_die_config(key, NULL);
1983 return ret;
1984}
1985
77d67977
CC
1986int git_config_get_expiry(const char *key, const char **output)
1987{
1988 int ret = git_config_get_string_const(key, output);
1989 if (ret)
1990 return ret;
1991 if (strcmp(*output, "now")) {
dddbad72 1992 timestamp_t now = approxidate("now");
77d67977
CC
1993 if (approxidate(*output) >= now)
1994 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
1995 }
1996 return ret;
1997}
1998
435ec090
CC
1999int git_config_get_untracked_cache(void)
2000{
2001 int val = -1;
2002 const char *v;
2003
dae6c322
CC
2004 /* Hack for test programs like test-dump-untracked-cache */
2005 if (ignore_untracked_cache_config)
2006 return -1;
2007
435ec090
CC
2008 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
2009 return val;
2010
2011 if (!git_config_get_value("core.untrackedcache", &v)) {
2012 if (!strcasecmp(v, "keep"))
2013 return -1;
2014
f60ef2d6
CC
2015 error(_("unknown core.untrackedCache value '%s'; "
2016 "using 'keep' default value"), v);
435ec090
CC
2017 return -1;
2018 }
2019
2020 return -1; /* default value */
2021}
2022
1f44b09b
CC
2023int git_config_get_split_index(void)
2024{
2025 int val;
2026
2027 if (!git_config_get_maybe_bool("core.splitindex", &val))
2028 return val;
2029
2030 return -1; /* default value */
2031}
2032
72dcb7b3
CC
2033int git_config_get_max_percent_split_change(void)
2034{
2035 int val = -1;
2036
2037 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2038 if (0 <= val && val <= 100)
2039 return val;
2040
2041 return error(_("splitIndex.maxPercentChange value '%d' "
2042 "should be between 0 and 100"), val);
2043 }
2044
2045 return -1; /* default value */
2046}
2047
5a80e97c
TA
2048NORETURN
2049void git_die_config_linenr(const char *key, const char *filename, int linenr)
2050{
2051 if (!filename)
2052 die(_("unable to parse '%s' from command-line config"), key);
2053 else
2054 die(_("bad config variable '%s' in file '%s' at line %d"),
2055 key, filename, linenr);
2056}
2057
2058NORETURN __attribute__((format(printf, 2, 3)))
2059void git_die_config(const char *key, const char *err, ...)
2060{
2061 const struct string_list *values;
2062 struct key_value_info *kv_info;
2063
2064 if (err) {
2065 va_list params;
2066 va_start(params, err);
2067 vreportf("error: ", err, params);
2068 va_end(params);
2069 }
2070 values = git_config_get_value_multi(key);
2071 kv_info = values->items[values->nr - 1].util;
2072 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
2073}
2074
10bea152
JS
2075/*
2076 * Find all the stuff for git_config_set() below.
2077 */
4ddba79d 2078
10bea152
JS
2079static struct {
2080 int baselen;
4b25d091 2081 char *key;
f98d863d 2082 int do_not_match;
4b25d091 2083 regex_t *value_regex;
4ddba79d 2084 int multi_replace;
83786fa4
TR
2085 size_t *offset;
2086 unsigned int offset_alloc;
10bea152
JS
2087 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
2088 int seen;
2089} store;
2090
4b25d091 2091static int matches(const char *key, const char *value)
f98d863d 2092{
c1063be2
JK
2093 if (strcmp(key, store.key))
2094 return 0; /* not ours */
2095 if (!store.value_regex)
2096 return 1; /* always matches */
2097 if (store.value_regex == CONFIG_REGEX_NONE)
2098 return 0; /* never matches */
2099
2100 return store.do_not_match ^
2101 (value && !regexec(store.value_regex, value, 0, NULL, 0));
f98d863d
JS
2102}
2103
4b25d091 2104static int store_aux(const char *key, const char *value, void *cb)
10bea152 2105{
ae9ee41d
JH
2106 const char *ep;
2107 size_t section_len;
2108
10bea152
JS
2109 switch (store.state) {
2110 case KEY_SEEN:
f98d863d 2111 if (matches(key, value)) {
4ddba79d 2112 if (store.seen == 1 && store.multi_replace == 0) {
8262aaa2 2113 warning(_("%s has multiple values"), key);
10bea152 2114 }
4ddba79d 2115
83786fa4
TR
2116 ALLOC_GROW(store.offset, store.seen + 1,
2117 store.offset_alloc);
2118
49d6cfa5 2119 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2120 store.seen++;
2121 }
2122 break;
2123 case SECTION_SEEN:
ae9ee41d
JH
2124 /*
2125 * What we are looking for is in store.key (both
2126 * section and var), and its section part is baselen
2127 * long. We found key (again, both section and var).
2128 * We would want to know if this key is in the same
2129 * section as what we are looking for. We already
2130 * know we are in the same section as what should
2131 * hold store.key.
2132 */
2133 ep = strrchr(key, '.');
2134 section_len = ep - key;
2135
2136 if ((section_len != store.baselen) ||
2137 memcmp(key, store.key, section_len+1)) {
10bea152
JS
2138 store.state = SECTION_END_SEEN;
2139 break;
ae9ee41d
JH
2140 }
2141
2142 /*
2143 * Do not increment matches: this is no match, but we
2144 * just made sure we are in the desired section.
2145 */
83786fa4
TR
2146 ALLOC_GROW(store.offset, store.seen + 1,
2147 store.offset_alloc);
49d6cfa5 2148 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2149 /* fallthru */
2150 case SECTION_END_SEEN:
2151 case START:
f98d863d 2152 if (matches(key, value)) {
83786fa4
TR
2153 ALLOC_GROW(store.offset, store.seen + 1,
2154 store.offset_alloc);
49d6cfa5 2155 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2156 store.state = KEY_SEEN;
2157 store.seen++;
d14f7764
LT
2158 } else {
2159 if (strrchr(key, '.') - key == store.baselen &&
bdf0ef08 2160 !strncmp(key, store.key, store.baselen)) {
93ddef3e 2161 store.state = SECTION_SEEN;
83786fa4
TR
2162 ALLOC_GROW(store.offset,
2163 store.seen + 1,
2164 store.offset_alloc);
49d6cfa5 2165 store.offset[store.seen] = cf->do_ftell(cf);
d14f7764 2166 }
bdf0ef08 2167 }
10bea152
JS
2168 }
2169 return 0;
2170}
2171
64c0d71c 2172static int write_error(const char *filename)
480c9e52 2173{
64c0d71c 2174 error("failed to write new configuration file %s", filename);
480c9e52
AW
2175
2176 /* Same error code as "failed to rename". */
2177 return 4;
2178}
2179
4b25d091 2180static int store_write_section(int fd, const char *key)
10bea152 2181{
cb891a59
KH
2182 const char *dot;
2183 int i, success;
f285a2d7 2184 struct strbuf sb = STRBUF_INIT;
d14f7764 2185
cb891a59 2186 dot = memchr(key, '.', store.baselen);
d14f7764 2187 if (dot) {
cb891a59
KH
2188 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
2189 for (i = dot - key + 1; i < store.baselen; i++) {
e5c349ba 2190 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
2191 strbuf_addch(&sb, '\\');
2192 strbuf_addch(&sb, key[i]);
d14f7764 2193 }
cb891a59
KH
2194 strbuf_addstr(&sb, "\"]\n");
2195 } else {
2196 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
d14f7764
LT
2197 }
2198
cb891a59
KH
2199 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2200 strbuf_release(&sb);
480c9e52 2201
cb891a59 2202 return success;
10bea152
JS
2203}
2204
4b25d091 2205static int store_write_pair(int fd, const char *key, const char *value)
10bea152 2206{
cb891a59
KH
2207 int i, success;
2208 int length = strlen(key + store.baselen + 1);
2209 const char *quote = "";
f285a2d7 2210 struct strbuf sb = STRBUF_INIT;
cdd4fb15 2211
6281f394
JM
2212 /*
2213 * Check to see if the value needs to be surrounded with a dq pair.
2214 * Note that problematic characters are always backslash-quoted; this
2215 * check is about not losing leading or trailing SP and strings that
2216 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2217 * configuration parser.
2218 */
cdd4fb15 2219 if (value[0] == ' ')
cb891a59 2220 quote = "\"";
cdd4fb15
BG
2221 for (i = 0; value[i]; i++)
2222 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
2223 quote = "\"";
2224 if (i && value[i - 1] == ' ')
2225 quote = "\"";
2226
cb891a59
KH
2227 strbuf_addf(&sb, "\t%.*s = %s",
2228 length, key + store.baselen + 1, quote);
10bea152 2229
10bea152
JS
2230 for (i = 0; value[i]; i++)
2231 switch (value[i]) {
480c9e52 2232 case '\n':
cb891a59 2233 strbuf_addstr(&sb, "\\n");
480c9e52
AW
2234 break;
2235 case '\t':
cb891a59 2236 strbuf_addstr(&sb, "\\t");
480c9e52
AW
2237 break;
2238 case '"':
2239 case '\\':
cb891a59 2240 strbuf_addch(&sb, '\\');
480c9e52 2241 default:
cb891a59 2242 strbuf_addch(&sb, value[i]);
480c9e52
AW
2243 break;
2244 }
cb891a59
KH
2245 strbuf_addf(&sb, "%s\n", quote);
2246
2247 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2248 strbuf_release(&sb);
2249
2250 return success;
10bea152
JS
2251}
2252
4b25d091
FC
2253static ssize_t find_beginning_of_line(const char *contents, size_t size,
2254 size_t offset_, int *found_bracket)
4ddba79d 2255{
dc49cd76
SP
2256 size_t equal_offset = size, bracket_offset = size;
2257 ssize_t offset;
4ddba79d 2258
7a31cc0f 2259contline:
a6080a0a 2260 for (offset = offset_-2; offset > 0
4ddba79d
JS
2261 && contents[offset] != '\n'; offset--)
2262 switch (contents[offset]) {
2263 case '=': equal_offset = offset; break;
2264 case ']': bracket_offset = offset; break;
2265 }
7a31cc0f
FL
2266 if (offset > 0 && contents[offset-1] == '\\') {
2267 offset_ = offset;
2268 goto contline;
2269 }
4ddba79d
JS
2270 if (bracket_offset < equal_offset) {
2271 *found_bracket = 1;
2272 offset = bracket_offset+1;
2273 } else
2274 offset++;
2275
2276 return offset;
2277}
2278
30598ad0
PS
2279int git_config_set_in_file_gently(const char *config_filename,
2280 const char *key, const char *value)
5ec31182 2281{
30598ad0 2282 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
2283}
2284
3d180648
PS
2285void git_config_set_in_file(const char *config_filename,
2286 const char *key, const char *value)
10bea152 2287{
3d180648 2288 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
2289}
2290
30598ad0 2291int git_config_set_gently(const char *key, const char *value)
10bea152 2292{
30598ad0 2293 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
2294}
2295
3d180648 2296void git_config_set(const char *key, const char *value)
b4c8aba6 2297{
3d180648 2298 git_config_set_multivar(key, value, NULL, 0);
10bea152
JS
2299}
2300
2301/*
2302 * If value==NULL, unset in (remove from) config,
2303 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2304 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2305 * (only add a new one)
4ddba79d
JS
2306 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2307 * else all matching key/values (regardless how many) are removed,
2308 * before the new pair is written.
10bea152
JS
2309 *
2310 * Returns 0 on success.
2311 *
2312 * This function does this:
2313 *
2314 * - it locks the config file by creating ".git/config.lock"
2315 *
2316 * - it then parses the config using store_aux() as validator to find
2317 * the position on the key/value pair to replace. If it is to be unset,
2318 * it must be found exactly once.
2319 *
2320 * - the config file is mmap()ed and the part before the match (if any) is
2321 * written to the lock file, then the changed part and the rest.
2322 *
2323 * - the config file is removed and the lock file rename()d to it.
2324 *
2325 */
30598ad0
PS
2326int git_config_set_multivar_in_file_gently(const char *config_filename,
2327 const char *key, const char *value,
2328 const char *value_regex,
2329 int multi_replace)
10bea152 2330{
54d160ec 2331 int fd = -1, in_fd = -1;
dafc88b1 2332 int ret;
6cbf973c 2333 struct lock_file *lock = NULL;
0a5f5759 2334 char *filename_buf = NULL;
3a1b3126
JK
2335 char *contents = NULL;
2336 size_t contents_sz;
4ddba79d 2337
b09c53a3
LP
2338 /* parse-key returns negative; flip the sign to feed exit(3) */
2339 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2340 if (ret)
dafc88b1 2341 goto out_free;
b17e659d
JS
2342
2343 store.multi_replace = multi_replace;
10bea152 2344
0a5f5759
JK
2345 if (!config_filename)
2346 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2347
2348 /*
6cbf973c 2349 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2350 * contents of .git/config will be written into it.
2351 */
f1064f6b 2352 lock = xcalloc(1, sizeof(struct lock_file));
6cbf973c
BS
2353 fd = hold_lock_file_for_update(lock, config_filename, 0);
2354 if (fd < 0) {
f0658ec9 2355 error_errno("could not lock config file %s", config_filename);
10bea152 2356 free(store.key);
7a397419 2357 ret = CONFIG_NO_LOCK;
dafc88b1 2358 goto out_free;
10bea152
JS
2359 }
2360
2361 /*
2362 * If .git/config does not exist yet, write a minimal version.
2363 */
88fb958b
AR
2364 in_fd = open(config_filename, O_RDONLY);
2365 if ( in_fd < 0 ) {
10bea152
JS
2366 free(store.key);
2367
88fb958b 2368 if ( ENOENT != errno ) {
f0658ec9 2369 error_errno("opening %s", config_filename);
7a397419 2370 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2371 goto out_free;
88fb958b 2372 }
10bea152
JS
2373 /* if nothing to unset, error out */
2374 if (value == NULL) {
7a397419 2375 ret = CONFIG_NOTHING_SET;
dafc88b1 2376 goto out_free;
10bea152
JS
2377 }
2378
4b25d091 2379 store.key = (char *)key;
480c9e52 2380 if (!store_write_section(fd, key) ||
93c1e079
JH
2381 !store_write_pair(fd, key, value))
2382 goto write_err_out;
2383 } else {
88fb958b 2384 struct stat st;
3a1b3126 2385 size_t copy_begin, copy_end;
dc49cd76 2386 int i, new_line = 0;
10bea152
JS
2387
2388 if (value_regex == NULL)
2389 store.value_regex = NULL;
c1063be2
JK
2390 else if (value_regex == CONFIG_REGEX_NONE)
2391 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2392 else {
f98d863d
JS
2393 if (value_regex[0] == '!') {
2394 store.do_not_match = 1;
2395 value_regex++;
2396 } else
2397 store.do_not_match = 0;
2398
2d7320d0 2399 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2400 if (regcomp(store.value_regex, value_regex,
2401 REG_EXTENDED)) {
64c0d71c 2402 error("invalid pattern: %s", value_regex);
10bea152 2403 free(store.value_regex);
7a397419 2404 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2405 goto out_free;
10bea152
JS
2406 }
2407 }
2408
83786fa4 2409 ALLOC_GROW(store.offset, 1, store.offset_alloc);
4ddba79d 2410 store.offset[0] = 0;
10bea152
JS
2411 store.state = START;
2412 store.seen = 0;
2413
2414 /*
2415 * After this, store.offset will contain the *end* offset
2416 * of the last match, or remain at 0 if no match was found.
2417 * As a side effect, we make sure to transform only a valid
2418 * existing config file.
2419 */
ef90d6d4 2420 if (git_config_from_file(store_aux, config_filename, NULL)) {
64c0d71c 2421 error("invalid config file %s", config_filename);
10bea152 2422 free(store.key);
c1063be2
JK
2423 if (store.value_regex != NULL &&
2424 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2425 regfree(store.value_regex);
2426 free(store.value_regex);
2427 }
7a397419 2428 ret = CONFIG_INVALID_FILE;
dafc88b1 2429 goto out_free;
10bea152
JS
2430 }
2431
2432 free(store.key);
c1063be2
JK
2433 if (store.value_regex != NULL &&
2434 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2435 regfree(store.value_regex);
2436 free(store.value_regex);
2437 }
2438
4ddba79d
JS
2439 /* if nothing to unset, or too many matches, error out */
2440 if ((store.seen == 0 && value == NULL) ||
2441 (store.seen > 1 && multi_replace == 0)) {
7a397419 2442 ret = CONFIG_NOTHING_SET;
dafc88b1 2443 goto out_free;
10bea152
JS
2444 }
2445
29647d79
NTND
2446 if (fstat(in_fd, &st) == -1) {
2447 error_errno(_("fstat on %s failed"), config_filename);
2448 ret = CONFIG_INVALID_FILE;
2449 goto out_free;
2450 }
2451
dc49cd76 2452 contents_sz = xsize_t(st.st_size);
1570856b
JK
2453 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2454 MAP_PRIVATE, in_fd, 0);
2455 if (contents == MAP_FAILED) {
0e8771f1
JK
2456 if (errno == ENODEV && S_ISDIR(st.st_mode))
2457 errno = EISDIR;
f0658ec9 2458 error_errno("unable to mmap '%s'", config_filename);
1570856b
JK
2459 ret = CONFIG_INVALID_FILE;
2460 contents = NULL;
2461 goto out_free;
2462 }
10bea152 2463 close(in_fd);
54d160ec 2464 in_fd = -1;
10bea152 2465
b4fb09e4 2466 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9 2467 error_errno("chmod on %s failed", get_lock_file_path(lock));
daa22c6f
EW
2468 ret = CONFIG_NO_WRITE;
2469 goto out_free;
2470 }
2471
4ddba79d
JS
2472 if (store.seen == 0)
2473 store.seen = 1;
2474
2475 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2476 if (store.offset[i] == 0) {
dc49cd76 2477 store.offset[i] = copy_end = contents_sz;
4ddba79d
JS
2478 } else if (store.state != KEY_SEEN) {
2479 copy_end = store.offset[i];
10bea152 2480 } else
4ddba79d 2481 copy_end = find_beginning_of_line(
dc49cd76 2482 contents, contents_sz,
4ddba79d
JS
2483 store.offset[i]-2, &new_line);
2484
02e5ba4a
JK
2485 if (copy_end > 0 && contents[copy_end-1] != '\n')
2486 new_line = 1;
2487
4ddba79d
JS
2488 /* write the first part of the config */
2489 if (copy_end > copy_begin) {
93c1e079
JH
2490 if (write_in_full(fd, contents + copy_begin,
2491 copy_end - copy_begin) <
2492 copy_end - copy_begin)
2493 goto write_err_out;
2494 if (new_line &&
2b7ca830 2495 write_str_in_full(fd, "\n") != 1)
93c1e079 2496 goto write_err_out;
4ddba79d
JS
2497 }
2498 copy_begin = store.offset[i];
10bea152
JS
2499 }
2500
10bea152
JS
2501 /* write the pair (value == NULL means unset) */
2502 if (value != NULL) {
93c1e079
JH
2503 if (store.state == START) {
2504 if (!store_write_section(fd, key))
2505 goto write_err_out;
480c9e52 2506 }
93c1e079
JH
2507 if (!store_write_pair(fd, key, value))
2508 goto write_err_out;
10bea152
JS
2509 }
2510
2511 /* write the rest of the config */
dc49cd76 2512 if (copy_begin < contents_sz)
93c1e079 2513 if (write_in_full(fd, contents + copy_begin,
dc49cd76
SP
2514 contents_sz - copy_begin) <
2515 contents_sz - copy_begin)
93c1e079 2516 goto write_err_out;
7a64592c
KB
2517
2518 munmap(contents, contents_sz);
2519 contents = NULL;
10bea152
JS
2520 }
2521
4ed7cd3a 2522 if (commit_lock_file(lock) < 0) {
f0658ec9 2523 error_errno("could not write config file %s", config_filename);
7a397419 2524 ret = CONFIG_NO_WRITE;
e831855e 2525 lock = NULL;
dafc88b1 2526 goto out_free;
10bea152
JS
2527 }
2528
6cbf973c
BS
2529 /*
2530 * lock is committed, so don't try to roll it back below.
2531 * NOTE: Since lockfile.c keeps a linked list of all created
2532 * lock_file structures, it isn't safe to free(lock). It's
2533 * better to just leave it hanging around.
2534 */
2535 lock = NULL;
dafc88b1
SH
2536 ret = 0;
2537
3c8687a7
TA
2538 /* Invalidate the config cache */
2539 git_config_clear();
2540
dafc88b1 2541out_free:
6cbf973c
BS
2542 if (lock)
2543 rollback_lock_file(lock);
0a5f5759 2544 free(filename_buf);
3a1b3126
JK
2545 if (contents)
2546 munmap(contents, contents_sz);
54d160ec
SS
2547 if (in_fd >= 0)
2548 close(in_fd);
dafc88b1 2549 return ret;
93c1e079
JH
2550
2551write_err_out:
b4fb09e4 2552 ret = write_error(get_lock_file_path(lock));
93c1e079
JH
2553 goto out_free;
2554
10bea152
JS
2555}
2556
3d180648
PS
2557void git_config_set_multivar_in_file(const char *config_filename,
2558 const char *key, const char *value,
2559 const char *value_regex, int multi_replace)
b4c8aba6 2560{
1cae428e
JK
2561 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2562 value_regex, multi_replace))
2563 return;
2564 if (value)
8c3ca351 2565 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2566 else
2567 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2568}
2569
30598ad0
PS
2570int git_config_set_multivar_gently(const char *key, const char *value,
2571 const char *value_regex, int multi_replace)
5ec31182 2572{
30598ad0
PS
2573 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2574 multi_replace);
5ec31182
RR
2575}
2576
3d180648
PS
2577void git_config_set_multivar(const char *key, const char *value,
2578 const char *value_regex, int multi_replace)
5ec31182 2579{
3d180648
PS
2580 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2581 multi_replace);
5ec31182
RR
2582}
2583
118f8b24
PB
2584static int section_name_match (const char *buf, const char *name)
2585{
2586 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2587 if (buf[i] != '[')
2588 return 0;
2589 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2590 if (!dot && isspace(buf[i])) {
2591 dot = 1;
2592 if (name[j++] != '.')
2593 break;
2594 for (i++; isspace(buf[i]); i++)
2595 ; /* do nothing */
2596 if (buf[i] != '"')
2597 break;
2598 continue;
2599 }
2600 if (buf[i] == '\\' && dot)
2601 i++;
2602 else if (buf[i] == '"' && dot) {
2603 for (i++; isspace(buf[i]); i++)
2604 ; /* do_nothing */
2605 break;
2606 }
2607 if (buf[i] != name[j++])
2608 break;
2609 }
a4c0d463
AV
2610 if (buf[i] == ']' && name[j] == 0) {
2611 /*
2612 * We match, now just find the right length offset by
2613 * gobbling up any whitespace after it, as well
2614 */
2615 i++;
2616 for (; buf[i] && isspace(buf[i]); i++)
2617 ; /* do nothing */
2618 return i;
2619 }
2620 return 0;
118f8b24
PB
2621}
2622
94a35b1a
JK
2623static int section_name_is_ok(const char *name)
2624{
2625 /* Empty section names are bogus. */
2626 if (!*name)
2627 return 0;
2628
2629 /*
2630 * Before a dot, we must be alphanumeric or dash. After the first dot,
2631 * anything goes, so we can stop checking.
2632 */
2633 for (; *name && *name != '.'; name++)
2634 if (*name != '-' && !isalnum(*name))
2635 return 0;
2636 return 1;
2637}
2638
118f8b24 2639/* if new_name == NULL, the section is removed instead */
42bd39b5
JK
2640int git_config_rename_section_in_file(const char *config_filename,
2641 const char *old_name, const char *new_name)
0667fcfb 2642{
118f8b24 2643 int ret = 0, remove = 0;
42bd39b5 2644 char *filename_buf = NULL;
94a35b1a 2645 struct lock_file *lock;
0667fcfb
JS
2646 int out_fd;
2647 char buf[1024];
4db7dbdb 2648 FILE *config_file = NULL;
daa22c6f 2649 struct stat st;
0667fcfb 2650
94a35b1a
JK
2651 if (new_name && !section_name_is_ok(new_name)) {
2652 ret = error("invalid section name: %s", new_name);
c06fa62d 2653 goto out_no_rollback;
94a35b1a
JK
2654 }
2655
42bd39b5
JK
2656 if (!config_filename)
2657 config_filename = filename_buf = git_pathdup("config");
2658
f1064f6b 2659 lock = xcalloc(1, sizeof(struct lock_file));
0667fcfb 2660 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
fc1905bb 2661 if (out_fd < 0) {
64c0d71c 2662 ret = error("could not lock config file %s", config_filename);
fc1905bb
JH
2663 goto out;
2664 }
0667fcfb 2665
fc1905bb 2666 if (!(config_file = fopen(config_filename, "rb"))) {
11dc1fcb
NTND
2667 ret = warn_on_fopen_errors(config_filename);
2668 if (ret)
2669 goto out;
01ebb9dc 2670 /* no config file means nothing to rename, no error */
6e45b43f 2671 goto commit_and_out;
fc1905bb 2672 }
0667fcfb 2673
29647d79
NTND
2674 if (fstat(fileno(config_file), &st) == -1) {
2675 ret = error_errno(_("fstat on %s failed"), config_filename);
2676 goto out;
2677 }
daa22c6f 2678
b4fb09e4 2679 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9
NTND
2680 ret = error_errno("chmod on %s failed",
2681 get_lock_file_path(lock));
daa22c6f
EW
2682 goto out;
2683 }
2684
0667fcfb
JS
2685 while (fgets(buf, sizeof(buf), config_file)) {
2686 int i;
480c9e52 2687 int length;
9a5abfc7 2688 char *output = buf;
0667fcfb
JS
2689 for (i = 0; buf[i] && isspace(buf[i]); i++)
2690 ; /* do nothing */
2691 if (buf[i] == '[') {
2692 /* it's a section */
a4c0d463
AV
2693 int offset = section_name_match(&buf[i], old_name);
2694 if (offset > 0) {
118f8b24
PB
2695 ret++;
2696 if (new_name == NULL) {
2697 remove = 1;
0667fcfb
JS
2698 continue;
2699 }
0667fcfb 2700 store.baselen = strlen(new_name);
480c9e52 2701 if (!store_write_section(out_fd, new_name)) {
b4fb09e4 2702 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2703 goto out;
2704 }
9a5abfc7
AV
2705 /*
2706 * We wrote out the new section, with
2707 * a newline, now skip the old
2708 * section's length
2709 */
2710 output += offset + i;
2711 if (strlen(output) > 0) {
2712 /*
2713 * More content means there's
2714 * a declaration to put on the
2715 * next line; indent with a
2716 * tab
2717 */
2718 output -= 1;
2719 output[0] = '\t';
2720 }
0667fcfb 2721 }
118f8b24 2722 remove = 0;
0667fcfb 2723 }
118f8b24
PB
2724 if (remove)
2725 continue;
9a5abfc7
AV
2726 length = strlen(output);
2727 if (write_in_full(out_fd, output, length) != length) {
b4fb09e4 2728 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2729 goto out;
2730 }
0667fcfb 2731 }
fc1905bb 2732 fclose(config_file);
4db7dbdb 2733 config_file = NULL;
6e45b43f 2734commit_and_out:
4ed7cd3a 2735 if (commit_lock_file(lock) < 0)
f0658ec9
NTND
2736 ret = error_errno("could not write config file %s",
2737 config_filename);
8b590075 2738out:
4db7dbdb
JS
2739 if (config_file)
2740 fclose(config_file);
c06fa62d
NTND
2741 rollback_lock_file(lock);
2742out_no_rollback:
42bd39b5 2743 free(filename_buf);
0667fcfb
JS
2744 return ret;
2745}
40ea4ed9 2746
42bd39b5
JK
2747int git_config_rename_section(const char *old_name, const char *new_name)
2748{
4a7bb5ba 2749 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
2750}
2751
40ea4ed9
JH
2752/*
2753 * Call this to report error for your variable that should not
2754 * get a boolean value (i.e. "[my] var" means "true").
2755 */
a469a101 2756#undef config_error_nonbool
40ea4ed9
JH
2757int config_error_nonbool(const char *var)
2758{
8c3ca351 2759 return error("missing value for '%s'", var);
40ea4ed9 2760}
1b86bbb0
JK
2761
2762int parse_config_key(const char *var,
2763 const char *section,
2764 const char **subsection, int *subsection_len,
2765 const char **key)
2766{
1b86bbb0
JK
2767 const char *dot;
2768
2769 /* Does it start with "section." ? */
e3394fdc 2770 if (!skip_prefix(var, section, &var) || *var != '.')
1b86bbb0
JK
2771 return -1;
2772
2773 /*
2774 * Find the key; we don't know yet if we have a subsection, but we must
2775 * parse backwards from the end, since the subsection may have dots in
2776 * it, too.
2777 */
2778 dot = strrchr(var, '.');
2779 *key = dot + 1;
2780
2781 /* Did we have a subsection at all? */
e3394fdc 2782 if (dot == var) {
48f8d9f7
JK
2783 if (subsection) {
2784 *subsection = NULL;
2785 *subsection_len = 0;
2786 }
1b86bbb0
JK
2787 }
2788 else {
48f8d9f7
JK
2789 if (!subsection)
2790 return -1;
e3394fdc 2791 *subsection = var + 1;
1b86bbb0
JK
2792 *subsection_len = dot - *subsection;
2793 }
2794
2795 return 0;
2796}
473166b9
LS
2797
2798const char *current_config_origin_type(void)
2799{
1b8132d9 2800 int type;
0d44a2da
JK
2801 if (current_config_kvi)
2802 type = current_config_kvi->origin_type;
2803 else if(cf)
2804 type = cf->origin_type;
2805 else
3258258f 2806 die("BUG: current_config_origin_type called outside config callback");
1b8132d9
VA
2807
2808 switch (type) {
2809 case CONFIG_ORIGIN_BLOB:
2810 return "blob";
2811 case CONFIG_ORIGIN_FILE:
2812 return "file";
2813 case CONFIG_ORIGIN_STDIN:
2814 return "standard input";
2815 case CONFIG_ORIGIN_SUBMODULE_BLOB:
2816 return "submodule-blob";
2817 case CONFIG_ORIGIN_CMDLINE:
2818 return "command line";
2819 default:
2820 die("BUG: unknown config origin type");
2821 }
473166b9
LS
2822}
2823
2824const char *current_config_name(void)
2825{
0d44a2da
JK
2826 const char *name;
2827 if (current_config_kvi)
2828 name = current_config_kvi->filename;
2829 else if (cf)
2830 name = cf->name;
2831 else
3258258f 2832 die("BUG: current_config_name called outside config callback");
0d44a2da 2833 return name ? name : "";
473166b9 2834}
9acc5911
JK
2835
2836enum config_scope current_config_scope(void)
2837{
2838 if (current_config_kvi)
2839 return current_config_kvi->scope;
2840 else
2841 return current_parsing_scope;
473166b9 2842}