A bit of updates post -rc0
[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"
697cc8ef 9#include "lockfile.h"
7f0e39fa 10#include "exec_cmd.h"
572e4f6a 11#include "strbuf.h"
2b64fc89 12#include "quote.h"
3c8687a7
TA
13#include "hashmap.h"
14#include "string-list.h"
599446dc 15#include "utf8.h"
17712991 16
4d8dd149
HV
17struct config_source {
18 struct config_source *prev;
19 union {
20 FILE *file;
1bc88819
HV
21 struct config_buf {
22 const char *buf;
23 size_t len;
24 size_t pos;
25 } buf;
4d8dd149 26 } u;
1b8132d9 27 enum config_origin_type origin_type;
924aaf3e 28 const char *name;
d14d4244 29 const char *path;
b2dc0945 30 int die_on_error;
924aaf3e
RJ
31 int linenr;
32 int eof;
33 struct strbuf value;
0971e992 34 struct strbuf var;
924aaf3e 35
49d6cfa5
JK
36 int (*do_fgetc)(struct config_source *c);
37 int (*do_ungetc)(int c, struct config_source *conf);
38 long (*do_ftell)(struct config_source *c);
4d8dd149
HV
39};
40
0d44a2da
JK
41/*
42 * These variables record the "current" config source, which
43 * can be accessed by parsing callbacks.
44 *
45 * The "cf" variable will be non-NULL only when we are actually parsing a real
46 * config source (file, blob, cmdline, etc).
47 *
48 * The "current_config_kvi" variable will be non-NULL only when we are feeding
49 * cached config from a configset into a callback.
50 *
51 * They should generally never be non-NULL at the same time. If they are both
52 * NULL, then we aren't parsing anything (and depending on the function looking
53 * at the variables, it's either a bug for it to be called in the first place,
54 * or it's a function which can be reused for non-config purposes, and should
55 * fall back to some sane behavior).
56 */
4d8dd149 57static struct config_source *cf;
0d44a2da 58static struct key_value_info *current_config_kvi;
924aaf3e 59
9acc5911
JK
60/*
61 * Similar to the variables above, this gives access to the "scope" of the
62 * current value (repo, global, etc). For cached values, it can be found via
63 * the current_config_kvi as above. During parsing, the current value can be
64 * found in this variable. It's not part of "cf" because it transcends a single
65 * file (i.e., a file included from .git/config is still in "repo" scope).
66 */
67static enum config_scope current_parsing_scope;
924aaf3e 68
960ccca6
DH
69static int zlib_compression_seen;
70
3c8687a7
TA
71/*
72 * Default config_set that contains key-value pairs from the usual set of config
73 * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
74 * config file and the global /etc/gitconfig)
75 */
76static struct config_set the_config_set;
77
4d8dd149
HV
78static int config_file_fgetc(struct config_source *conf)
79{
260d408e 80 return getc_unlocked(conf->u.file);
4d8dd149
HV
81}
82
83static int config_file_ungetc(int c, struct config_source *conf)
84{
85 return ungetc(c, conf->u.file);
86}
87
88static long config_file_ftell(struct config_source *conf)
89{
90 return ftell(conf->u.file);
91}
92
1bc88819
HV
93
94static int config_buf_fgetc(struct config_source *conf)
95{
96 if (conf->u.buf.pos < conf->u.buf.len)
97 return conf->u.buf.buf[conf->u.buf.pos++];
98
99 return EOF;
100}
101
102static int config_buf_ungetc(int c, struct config_source *conf)
103{
1d0655c1
JK
104 if (conf->u.buf.pos > 0) {
105 conf->u.buf.pos--;
106 if (conf->u.buf.buf[conf->u.buf.pos] != c)
107 die("BUG: config_buf can only ungetc the same character");
108 return c;
109 }
1bc88819
HV
110
111 return EOF;
112}
113
114static long config_buf_ftell(struct config_source *conf)
115{
116 return conf->u.buf.pos;
117}
118
9b25a0b5
JK
119#define MAX_INCLUDE_DEPTH 10
120static const char include_depth_advice[] =
121"exceeded maximum include depth (%d) while including\n"
122" %s\n"
123"from\n"
124" %s\n"
125"Do you have circular includes?";
126static int handle_path_include(const char *path, struct config_include_data *inc)
127{
128 int ret = 0;
129 struct strbuf buf = STRBUF_INIT;
67beb600 130 char *expanded;
4c0a89fc 131
67beb600
JK
132 if (!path)
133 return config_error_nonbool("include.path");
134
135 expanded = expand_user_path(path);
4c0a89fc 136 if (!expanded)
8c3ca351 137 return error("could not expand include path '%s'", path);
4c0a89fc 138 path = expanded;
9b25a0b5
JK
139
140 /*
141 * Use an absolute path as-is, but interpret relative paths
142 * based on the including config file.
143 */
144 if (!is_absolute_path(path)) {
145 char *slash;
146
d14d4244 147 if (!cf || !cf->path)
9b25a0b5
JK
148 return error("relative config includes must come from files");
149
d14d4244 150 slash = find_last_dir_sep(cf->path);
9b25a0b5 151 if (slash)
d14d4244 152 strbuf_add(&buf, cf->path, slash - cf->path + 1);
9b25a0b5
JK
153 strbuf_addstr(&buf, path);
154 path = buf.buf;
155 }
156
4698c8fe 157 if (!access_or_die(path, R_OK, 0)) {
9b25a0b5
JK
158 if (++inc->depth > MAX_INCLUDE_DEPTH)
159 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
3258258f
JK
160 !cf ? "<unknown>" :
161 cf->name ? cf->name :
162 "the command line");
9b25a0b5
JK
163 ret = git_config_from_file(git_config_include, path, inc);
164 inc->depth--;
165 }
166 strbuf_release(&buf);
4c0a89fc 167 free(expanded);
9b25a0b5
JK
168 return ret;
169}
170
171int git_config_include(const char *var, const char *value, void *data)
172{
173 struct config_include_data *inc = data;
9b25a0b5
JK
174 int ret;
175
176 /*
177 * Pass along all values, including "include" directives; this makes it
178 * possible to query information on the includes themselves.
179 */
180 ret = inc->fn(var, value, inc->data);
181 if (ret < 0)
182 return ret;
183
37007c3a 184 if (!strcmp(var, "include.path"))
9b25a0b5
JK
185 ret = handle_path_include(value, inc);
186 return ret;
187}
188
2b64fc89
JK
189void git_config_push_parameter(const char *text)
190{
191 struct strbuf env = STRBUF_INIT;
192 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
d1f88498 193 if (old && *old) {
2b64fc89
JK
194 strbuf_addstr(&env, old);
195 strbuf_addch(&env, ' ');
196 }
197 sq_quote_buf(&env, text);
198 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
199 strbuf_release(&env);
200}
201
2496844b
JK
202int git_config_parse_parameter(const char *text,
203 config_fn_t fn, void *data)
8b1fa778 204{
a789ca70 205 const char *value;
572e4f6a 206 struct strbuf **pair;
a789ca70 207
f77bccae 208 pair = strbuf_split_str(text, '=', 2);
c5d6350b
JK
209 if (!pair[0])
210 return error("bogus config parameter: %s", text);
a789ca70
JH
211
212 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
572e4f6a 213 strbuf_setlen(pair[0], pair[0]->len - 1);
a789ca70
JH
214 value = pair[1] ? pair[1]->buf : "";
215 } else {
216 value = NULL;
217 }
218
572e4f6a
AR
219 strbuf_trim(pair[0]);
220 if (!pair[0]->len) {
221 strbuf_list_free(pair);
06eb708f 222 return error("bogus config parameter: %s", text);
8b1fa778 223 }
ffb20ce1 224 strbuf_tolower(pair[0]);
a789ca70 225 if (fn(pair[0]->buf, value, data) < 0) {
06eb708f
JK
226 strbuf_list_free(pair);
227 return -1;
572e4f6a
AR
228 }
229 strbuf_list_free(pair);
8b1fa778
AR
230 return 0;
231}
232
06eb708f
JK
233int git_config_from_parameters(config_fn_t fn, void *data)
234{
2b64fc89 235 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
a77d6db6 236 int ret = 0;
2b64fc89
JK
237 char *envw;
238 const char **argv = NULL;
239 int nr = 0, alloc = 0;
240 int i;
3258258f 241 struct config_source source;
2b64fc89
JK
242
243 if (!env)
244 return 0;
3258258f
JK
245
246 memset(&source, 0, sizeof(source));
247 source.prev = cf;
1b8132d9 248 source.origin_type = CONFIG_ORIGIN_CMDLINE;
3258258f
JK
249 cf = &source;
250
2b64fc89
JK
251 /* sq_dequote will write over it */
252 envw = xstrdup(env);
253
254 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
a77d6db6
JK
255 ret = error("bogus format in " CONFIG_DATA_ENVIRONMENT);
256 goto out;
2b64fc89
JK
257 }
258
259 for (i = 0; i < nr; i++) {
06eb708f 260 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
a77d6db6
JK
261 ret = -1;
262 goto out;
2b64fc89
JK
263 }
264 }
265
a77d6db6 266out:
2b64fc89
JK
267 free(argv);
268 free(envw);
3258258f 269 cf = source.prev;
a77d6db6 270 return ret;
2b64fc89
JK
271}
272
17712991
LT
273static int get_next_char(void)
274{
49d6cfa5 275 int c = cf->do_fgetc(cf);
17712991 276
dbb9a812
HV
277 if (c == '\r') {
278 /* DOS like systems */
49d6cfa5 279 c = cf->do_fgetc(cf);
dbb9a812 280 if (c != '\n') {
5e0be134
JK
281 if (c != EOF)
282 cf->do_ungetc(c, cf);
dbb9a812 283 c = '\r';
17712991
LT
284 }
285 }
dbb9a812
HV
286 if (c == '\n')
287 cf->linenr++;
288 if (c == EOF) {
289 cf->eof = 1;
b3b3f60b 290 cf->linenr++;
dbb9a812
HV
291 c = '\n';
292 }
17712991
LT
293 return c;
294}
295
296static char *parse_value(void)
297{
e96c19c5 298 int quote = 0, comment = 0, space = 0;
17712991 299
924aaf3e 300 strbuf_reset(&cf->value);
17712991
LT
301 for (;;) {
302 int c = get_next_char();
17712991 303 if (c == '\n') {
4b340593
MS
304 if (quote) {
305 cf->linenr--;
17712991 306 return NULL;
4b340593 307 }
924aaf3e 308 return cf->value.buf;
17712991
LT
309 }
310 if (comment)
311 continue;
312 if (isspace(c) && !quote) {
924aaf3e 313 if (cf->value.len)
ebdaae37 314 space++;
17712991
LT
315 continue;
316 }
7ebdba61
JS
317 if (!quote) {
318 if (c == ';' || c == '#') {
319 comment = 1;
320 continue;
321 }
322 }
ebdaae37 323 for (; space; space--)
924aaf3e 324 strbuf_addch(&cf->value, ' ');
17712991
LT
325 if (c == '\\') {
326 c = get_next_char();
327 switch (c) {
328 case '\n':
329 continue;
330 case 't':
331 c = '\t';
332 break;
333 case 'b':
334 c = '\b';
335 break;
336 case 'n':
337 c = '\n';
338 break;
5cbb401d
LT
339 /* Some characters escape as themselves */
340 case '\\': case '"':
341 break;
342 /* Reject unknown escape sequences */
343 default:
344 return NULL;
17712991 345 }
924aaf3e 346 strbuf_addch(&cf->value, c);
17712991
LT
347 continue;
348 }
349 if (c == '"') {
350 quote = 1-quote;
351 continue;
352 }
924aaf3e 353 strbuf_addch(&cf->value, c);
17712991
LT
354 }
355}
356
38c5afa8
LT
357static inline int iskeychar(int c)
358{
359 return isalnum(c) || c == '-';
360}
361
0971e992 362static int get_value(config_fn_t fn, void *data, struct strbuf *name)
17712991
LT
363{
364 int c;
365 char *value;
b3b3f60b 366 int ret;
17712991
LT
367
368 /* Get the full name */
369 for (;;) {
370 c = get_next_char();
924aaf3e 371 if (cf->eof)
17712991 372 break;
38c5afa8 373 if (!iskeychar(c))
17712991 374 break;
0971e992 375 strbuf_addch(name, tolower(c));
17712991 376 }
0971e992 377
17712991
LT
378 while (c == ' ' || c == '\t')
379 c = get_next_char();
380
381 value = NULL;
382 if (c != '\n') {
383 if (c != '=')
384 return -1;
385 value = parse_value();
386 if (!value)
387 return -1;
388 }
b3b3f60b
MM
389 /*
390 * We already consumed the \n, but we need linenr to point to
391 * the line we just parsed during the call to fn to get
392 * accurate line number in error messages.
393 */
394 cf->linenr--;
395 ret = fn(name->buf, value, data);
396 cf->linenr++;
397 return ret;
17712991
LT
398}
399
0971e992 400static int get_extended_base_var(struct strbuf *name, int c)
d14f7764
LT
401{
402 do {
403 if (c == '\n')
4b340593 404 goto error_incomplete_line;
d14f7764
LT
405 c = get_next_char();
406 } while (isspace(c));
407
408 /* We require the format to be '[base "extension"]' */
409 if (c != '"')
410 return -1;
0971e992 411 strbuf_addch(name, '.');
d14f7764
LT
412
413 for (;;) {
414 int c = get_next_char();
415 if (c == '\n')
4b340593 416 goto error_incomplete_line;
d14f7764
LT
417 if (c == '"')
418 break;
419 if (c == '\\') {
420 c = get_next_char();
421 if (c == '\n')
4b340593 422 goto error_incomplete_line;
d14f7764 423 }
0971e992 424 strbuf_addch(name, c);
d14f7764
LT
425 }
426
427 /* Final ']' */
428 if (get_next_char() != ']')
429 return -1;
0971e992 430 return 0;
4b340593
MS
431error_incomplete_line:
432 cf->linenr--;
433 return -1;
d14f7764
LT
434}
435
0971e992 436static int get_base_var(struct strbuf *name)
17712991 437{
17712991
LT
438 for (;;) {
439 int c = get_next_char();
924aaf3e 440 if (cf->eof)
17712991
LT
441 return -1;
442 if (c == ']')
0971e992 443 return 0;
d14f7764 444 if (isspace(c))
0971e992 445 return get_extended_base_var(name, c);
38c5afa8 446 if (!iskeychar(c) && c != '.')
17712991 447 return -1;
0971e992 448 strbuf_addch(name, tolower(c));
17712991
LT
449 }
450}
451
4d8dd149 452static int git_parse_source(config_fn_t fn, void *data)
17712991
LT
453{
454 int comment = 0;
455 int baselen = 0;
0971e992 456 struct strbuf *var = &cf->var;
1b8132d9
VA
457 int error_return = 0;
458 char *error_msg = NULL;
17712991 459
de056402 460 /* U+FEFF Byte Order Mark in UTF8 */
599446dc 461 const char *bomptr = utf8_bom;
de056402 462
17712991
LT
463 for (;;) {
464 int c = get_next_char();
de056402
PB
465 if (bomptr && *bomptr) {
466 /* We are at the file beginning; skip UTF8-encoded BOM
467 * if present. Sane editors won't put this in on their
468 * own, but e.g. Windows Notepad will do it happily. */
599446dc 469 if (c == (*bomptr & 0377)) {
de056402
PB
470 bomptr++;
471 continue;
472 } else {
473 /* Do not tolerate partial BOM. */
474 if (bomptr != utf8_bom)
475 break;
476 /* No BOM at file beginning. Cool. */
477 bomptr = NULL;
478 }
479 }
17712991 480 if (c == '\n') {
924aaf3e 481 if (cf->eof)
17712991
LT
482 return 0;
483 comment = 0;
484 continue;
485 }
486 if (comment || isspace(c))
487 continue;
488 if (c == '#' || c == ';') {
489 comment = 1;
490 continue;
491 }
492 if (c == '[') {
0971e992
BW
493 /* Reset prior to determining a new stem */
494 strbuf_reset(var);
495 if (get_base_var(var) < 0 || var->len < 1)
17712991 496 break;
0971e992
BW
497 strbuf_addch(var, '.');
498 baselen = var->len;
17712991
LT
499 continue;
500 }
501 if (!isalpha(c))
502 break;
0971e992
BW
503 /*
504 * Truncate the var name back to the section header
505 * stem prior to grabbing the suffix part of the name
506 * and the value.
507 */
508 strbuf_setlen(var, baselen);
509 strbuf_addch(var, tolower(c));
510 if (get_value(fn, data, var) < 0)
17712991
LT
511 break;
512 }
1b8132d9
VA
513
514 switch (cf->origin_type) {
515 case CONFIG_ORIGIN_BLOB:
516 error_msg = xstrfmt(_("bad config line %d in blob %s"),
517 cf->linenr, cf->name);
518 break;
519 case CONFIG_ORIGIN_FILE:
520 error_msg = xstrfmt(_("bad config line %d in file %s"),
521 cf->linenr, cf->name);
522 break;
523 case CONFIG_ORIGIN_STDIN:
524 error_msg = xstrfmt(_("bad config line %d in standard input"),
525 cf->linenr);
526 break;
527 case CONFIG_ORIGIN_SUBMODULE_BLOB:
528 error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
529 cf->linenr, cf->name);
530 break;
531 case CONFIG_ORIGIN_CMDLINE:
532 error_msg = xstrfmt(_("bad config line %d in command line %s"),
533 cf->linenr, cf->name);
534 break;
535 default:
536 error_msg = xstrfmt(_("bad config line %d in %s"),
537 cf->linenr, cf->name);
538 }
539
b2dc0945 540 if (cf->die_on_error)
1b8132d9 541 die("%s", error_msg);
b2dc0945 542 else
1b8132d9
VA
543 error_return = error("%s", error_msg);
544
545 free(error_msg);
546 return error_return;
17712991
LT
547}
548
ebaa1bd4 549static int parse_unit_factor(const char *end, uintmax_t *val)
0b87b6e0
BD
550{
551 if (!*end)
552 return 1;
c8deb5a1
SP
553 else if (!strcasecmp(end, "k")) {
554 *val *= 1024;
555 return 1;
556 }
557 else if (!strcasecmp(end, "m")) {
558 *val *= 1024 * 1024;
559 return 1;
560 }
561 else if (!strcasecmp(end, "g")) {
562 *val *= 1024 * 1024 * 1024;
563 return 1;
564 }
565 return 0;
0b87b6e0
BD
566}
567
7192777d 568static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
0b87b6e0
BD
569{
570 if (value && *value) {
571 char *end;
ebaa1bd4
NA
572 intmax_t val;
573 uintmax_t uval;
574 uintmax_t factor = 1;
575
576 errno = 0;
577 val = strtoimax(value, &end, 0);
578 if (errno == ERANGE)
579 return 0;
33fdd77e
JK
580 if (!parse_unit_factor(end, &factor)) {
581 errno = EINVAL;
c8deb5a1 582 return 0;
33fdd77e 583 }
83915ba5 584 uval = labs(val);
ebaa1bd4 585 uval *= factor;
83915ba5 586 if (uval > max || labs(val) > uval) {
33fdd77e 587 errno = ERANGE;
ebaa1bd4 588 return 0;
33fdd77e 589 }
ebaa1bd4
NA
590 val *= factor;
591 *ret = val;
0b87b6e0
BD
592 return 1;
593 }
33fdd77e 594 errno = EINVAL;
0b87b6e0
BD
595 return 0;
596}
597
0b4dc661 598static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
17712991
LT
599{
600 if (value && *value) {
601 char *end;
ebaa1bd4
NA
602 uintmax_t val;
603 uintmax_t oldval;
604
605 errno = 0;
606 val = strtoumax(value, &end, 0);
607 if (errno == ERANGE)
608 return 0;
609 oldval = val;
33fdd77e
JK
610 if (!parse_unit_factor(end, &val)) {
611 errno = EINVAL;
c8deb5a1 612 return 0;
33fdd77e
JK
613 }
614 if (val > max || oldval > val) {
615 errno = ERANGE;
ebaa1bd4 616 return 0;
33fdd77e 617 }
c8deb5a1 618 *ret = val;
0b87b6e0 619 return 1;
17712991 620 }
33fdd77e 621 errno = EINVAL;
0b87b6e0
BD
622 return 0;
623}
624
42d194e9 625static int git_parse_int(const char *value, int *ret)
c1867cea 626{
7192777d 627 intmax_t tmp;
42d194e9 628 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
7192777d
JK
629 return 0;
630 *ret = tmp;
631 return 1;
632}
633
00160242
JK
634static int git_parse_int64(const char *value, int64_t *ret)
635{
636 intmax_t tmp;
637 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
638 return 0;
639 *ret = tmp;
640 return 1;
641}
642
7192777d
JK
643int git_parse_ulong(const char *value, unsigned long *ret)
644{
645 uintmax_t tmp;
646 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
647 return 0;
648 *ret = tmp;
649 return 1;
650}
651
06bdc23b 652NORETURN
2f666581 653static void die_bad_number(const char *name, const char *value)
c1867cea 654{
078fe305
JNA
655 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
656
2f666581
JK
657 if (!value)
658 value = "";
659
1b8132d9 660 if (!(cf && cf->name))
078fe305
JNA
661 die(_("bad numeric config value '%s' for '%s': %s"),
662 value, name, error_type);
1b8132d9
VA
663
664 switch (cf->origin_type) {
665 case CONFIG_ORIGIN_BLOB:
078fe305
JNA
666 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
667 value, name, cf->name, error_type);
1b8132d9 668 case CONFIG_ORIGIN_FILE:
078fe305
JNA
669 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
670 value, name, cf->name, error_type);
1b8132d9 671 case CONFIG_ORIGIN_STDIN:
078fe305
JNA
672 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
673 value, name, error_type);
1b8132d9 674 case CONFIG_ORIGIN_SUBMODULE_BLOB:
078fe305
JNA
675 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
676 value, name, cf->name, error_type);
1b8132d9 677 case CONFIG_ORIGIN_CMDLINE:
078fe305
JNA
678 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
679 value, name, cf->name, error_type);
1b8132d9 680 default:
078fe305
JNA
681 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
682 value, name, cf->name, error_type);
1b8132d9 683 }
c1867cea
JK
684}
685
0b87b6e0
BD
686int git_config_int(const char *name, const char *value)
687{
42d194e9
JK
688 int ret;
689 if (!git_parse_int(value, &ret))
2f666581 690 die_bad_number(name, value);
0b87b6e0
BD
691 return ret;
692}
693
00160242
JK
694int64_t git_config_int64(const char *name, const char *value)
695{
696 int64_t ret;
697 if (!git_parse_int64(value, &ret))
698 die_bad_number(name, value);
0b87b6e0
BD
699 return ret;
700}
701
702unsigned long git_config_ulong(const char *name, const char *value)
703{
704 unsigned long ret;
705 if (!git_parse_ulong(value, &ret))
2f666581 706 die_bad_number(name, value);
0b87b6e0 707 return ret;
17712991
LT
708}
709
9a549d43 710int git_parse_maybe_bool(const char *value)
17712991
LT
711{
712 if (!value)
713 return 1;
714 if (!*value)
715 return 0;
8420ccd8
JH
716 if (!strcasecmp(value, "true")
717 || !strcasecmp(value, "yes")
718 || !strcasecmp(value, "on"))
17712991 719 return 1;
8420ccd8
JH
720 if (!strcasecmp(value, "false")
721 || !strcasecmp(value, "no")
722 || !strcasecmp(value, "off"))
17712991 723 return 0;
8420ccd8
JH
724 return -1;
725}
726
b2be2f6a
JK
727int git_config_maybe_bool(const char *name, const char *value)
728{
9a549d43 729 int v = git_parse_maybe_bool(value);
b2be2f6a
JK
730 if (0 <= v)
731 return v;
42d194e9 732 if (git_parse_int(value, &v))
db6195ef 733 return !!v;
b2be2f6a
JK
734 return -1;
735}
736
8420ccd8
JH
737int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
738{
9a549d43 739 int v = git_parse_maybe_bool(value);
8420ccd8
JH
740 if (0 <= v) {
741 *is_bool = 1;
742 return v;
743 }
a53f2ec6 744 *is_bool = 0;
c35b0b58 745 return git_config_int(name, value);
17712991
LT
746}
747
a53f2ec6
JH
748int git_config_bool(const char *name, const char *value)
749{
750 int discard;
c35b0b58 751 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
752}
753
ea5105a5
CC
754int git_config_string(const char **dest, const char *var, const char *value)
755{
756 if (!value)
757 return config_error_nonbool(var);
758 *dest = xstrdup(value);
759 return 0;
760}
761
395de250
MM
762int git_config_pathname(const char **dest, const char *var, const char *value)
763{
764 if (!value)
765 return config_error_nonbool(var);
766 *dest = expand_user_path(value);
767 if (!*dest)
8262aaa2 768 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
769 return 0;
770}
771
806e2ad7 772static int git_default_core_config(const char *var, const char *value)
17712991
LT
773{
774 /* This needs a better name */
775 if (!strcmp(var, "core.filemode")) {
776 trust_executable_bit = git_config_bool(var, value);
777 return 0;
778 }
1ce4790b
AR
779 if (!strcmp(var, "core.trustctime")) {
780 trust_ctime = git_config_bool(var, value);
781 return 0;
782 }
c1b5d738 783 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
784 if (!strcasecmp(value, "default"))
785 check_stat = 1;
786 else if (!strcasecmp(value, "minimal"))
787 check_stat = 0;
788 }
17712991 789
9378c161
JH
790 if (!strcmp(var, "core.quotepath")) {
791 quote_path_fully = git_config_bool(var, value);
792 return 0;
793 }
794
78a8d641
JS
795 if (!strcmp(var, "core.symlinks")) {
796 has_symlinks = git_config_bool(var, value);
797 return 0;
798 }
799
0a9b88b7
LT
800 if (!strcmp(var, "core.ignorecase")) {
801 ignore_case = git_config_bool(var, value);
802 return 0;
803 }
804
64589a03
JH
805 if (!strcmp(var, "core.attributesfile"))
806 return git_config_pathname(&git_attributes_file, var, value);
807
867ad08a
ÆAB
808 if (!strcmp(var, "core.hookspath"))
809 return git_config_pathname(&git_hooks_path, var, value);
810
7d1864ce
JH
811 if (!strcmp(var, "core.bare")) {
812 is_bare_repository_cfg = git_config_bool(var, value);
813 return 0;
814 }
815
5f73076c
JH
816 if (!strcmp(var, "core.ignorestat")) {
817 assume_unchanged = git_config_bool(var, value);
818 return 0;
819 }
820
e388c738
JH
821 if (!strcmp(var, "core.prefersymlinkrefs")) {
822 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
823 return 0;
824 }
825
6de08ae6
SP
826 if (!strcmp(var, "core.logallrefupdates")) {
827 log_all_ref_updates = git_config_bool(var, value);
828 return 0;
829 }
830
2f8acdb3
JH
831 if (!strcmp(var, "core.warnambiguousrefs")) {
832 warn_ambiguous_refs = git_config_bool(var, value);
833 return 0;
834 }
835
a71f09fe 836 if (!strcmp(var, "core.abbrev")) {
dce96489
LT
837 int abbrev = git_config_int(var, value);
838 if (abbrev < minimum_abbrev || abbrev > 40)
839 return -1;
840 default_abbrev = abbrev;
841 return 0;
842 }
843
5b33cb1f
JK
844 if (!strcmp(var, "core.disambiguate"))
845 return set_disambiguate_hint_config(var, value);
846
960ccca6 847 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
848 int level = git_config_int(var, value);
849 if (level == -1)
850 level = Z_DEFAULT_COMPRESSION;
851 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 852 die(_("bad zlib compression level %d"), level);
12f6c308 853 zlib_compression_level = level;
960ccca6
DH
854 zlib_compression_seen = 1;
855 return 0;
856 }
857
858 if (!strcmp(var, "core.compression")) {
859 int level = git_config_int(var, value);
860 if (level == -1)
861 level = Z_DEFAULT_COMPRESSION;
862 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 863 die(_("bad zlib compression level %d"), level);
960ccca6
DH
864 core_compression_level = level;
865 core_compression_seen = 1;
866 if (!zlib_compression_seen)
867 zlib_compression_level = level;
12f6c308
JBH
868 return 0;
869 }
870
60bb8b14 871 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 872 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 873 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
874
875 /* This value must be multiple of (pagesize * 2) */
876 packed_git_window_size /= pgsz_x2;
877 if (packed_git_window_size < 1)
878 packed_git_window_size = 1;
879 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
880 return 0;
881 }
882
15366280 883 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 884 big_file_threshold = git_config_ulong(var, value);
15366280
JH
885 return 0;
886 }
887
77ccc5bb 888 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 889 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
890 return 0;
891 }
892
18bdec11 893 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 894 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
895 return 0;
896 }
897
6c510bee 898 if (!strcmp(var, "core.autocrlf")) {
d7f46334 899 if (value && !strcasecmp(value, "input")) {
fd6cce9e 900 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
901 return 0;
902 }
6c510bee
LT
903 auto_crlf = git_config_bool(var, value);
904 return 0;
905 }
906
21e5ad50
SP
907 if (!strcmp(var, "core.safecrlf")) {
908 if (value && !strcasecmp(value, "warn")) {
909 safe_crlf = SAFE_CRLF_WARN;
910 return 0;
911 }
912 safe_crlf = git_config_bool(var, value);
913 return 0;
914 }
915
942e7747
EB
916 if (!strcmp(var, "core.eol")) {
917 if (value && !strcasecmp(value, "lf"))
ec70f52f 918 core_eol = EOL_LF;
942e7747 919 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 920 core_eol = EOL_CRLF;
942e7747 921 else if (value && !strcasecmp(value, "native"))
ec70f52f 922 core_eol = EOL_NATIVE;
942e7747 923 else
ec70f52f 924 core_eol = EOL_UNSET;
942e7747
EB
925 return 0;
926 }
927
a97a7468
JS
928 if (!strcmp(var, "core.notesref")) {
929 notes_ref_name = xstrdup(value);
930 return 0;
931 }
932
806e2ad7
LT
933 if (!strcmp(var, "core.editor"))
934 return git_config_string(&editor_program, var, value);
935
eff80a9f 936 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
937 if (!value)
938 return config_error_nonbool(var);
ad524f83 939 else if (!strcasecmp(value, "auto"))
84c9dc2c 940 auto_comment_line_char = 1;
ad524f83 941 else if (value[0] && !value[1]) {
649409b7 942 comment_line_char = value[0];
84c9dc2c 943 auto_comment_line_char = 0;
50b54fd7
NTND
944 } else
945 return error("core.commentChar should only be one character");
946 return 0;
eff80a9f
JH
947 }
948
d3e7da89
AK
949 if (!strcmp(var, "core.askpass"))
950 return git_config_string(&askpass_program, var, value);
951
806e2ad7 952 if (!strcmp(var, "core.excludesfile"))
395de250 953 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
954
955 if (!strcmp(var, "core.whitespace")) {
956 if (!value)
957 return config_error_nonbool(var);
958 whitespace_rule_cfg = parse_whitespace_rule(value);
959 return 0;
960 }
961
aafe9fba
LT
962 if (!strcmp(var, "core.fsyncobjectfiles")) {
963 fsync_object_files = git_config_bool(var, value);
964 return 0;
965 }
966
671c9b7e
LT
967 if (!strcmp(var, "core.preloadindex")) {
968 core_preload_index = git_config_bool(var, value);
969 return 0;
970 }
971
348df166
JS
972 if (!strcmp(var, "core.createobject")) {
973 if (!strcmp(value, "rename"))
974 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
975 else if (!strcmp(value, "link"))
976 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
977 else
8262aaa2 978 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
979 return 0;
980 }
981
08aefc9e
NTND
982 if (!strcmp(var, "core.sparsecheckout")) {
983 core_apply_sparse_checkout = git_config_bool(var, value);
984 return 0;
985 }
986
76759c7d
TB
987 if (!strcmp(var, "core.precomposeunicode")) {
988 precomposed_unicode = git_config_bool(var, value);
989 return 0;
990 }
991
a42643aa
JK
992 if (!strcmp(var, "core.protecthfs")) {
993 protect_hfs = git_config_bool(var, value);
994 return 0;
995 }
996
2b4c6efc
JS
997 if (!strcmp(var, "core.protectntfs")) {
998 protect_ntfs = git_config_bool(var, value);
999 return 0;
76759c7d
TB
1000 }
1001
f30afdab
JS
1002 if (!strcmp(var, "core.hidedotfiles")) {
1003 if (value && !strcasecmp(value, "dotgitonly"))
1004 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
1005 else
1006 hide_dotfiles = git_config_bool(var, value);
1007 return 0;
1008 }
1009
806e2ad7
LT
1010 /* Add other config variables here and to Documentation/config.txt. */
1011 return 0;
1012}
1013
1141f492 1014static int git_default_i18n_config(const char *var, const char *value)
d1364529 1015{
ea5105a5
CC
1016 if (!strcmp(var, "i18n.commitencoding"))
1017 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 1018
ea5105a5
CC
1019 if (!strcmp(var, "i18n.logoutputencoding"))
1020 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 1021
1141f492
LT
1022 /* Add other config variables here and to Documentation/config.txt. */
1023 return 0;
1024}
039bc64e 1025
1141f492
LT
1026static int git_default_branch_config(const char *var, const char *value)
1027{
9ed36cfa
JS
1028 if (!strcmp(var, "branch.autosetupmerge")) {
1029 if (value && !strcasecmp(value, "always")) {
1030 git_branch_track = BRANCH_TRACK_ALWAYS;
1031 return 0;
1032 }
1033 git_branch_track = git_config_bool(var, value);
1034 return 0;
1035 }
c998ae9b
DS
1036 if (!strcmp(var, "branch.autosetuprebase")) {
1037 if (!value)
1038 return config_error_nonbool(var);
1039 else if (!strcmp(value, "never"))
1040 autorebase = AUTOREBASE_NEVER;
1041 else if (!strcmp(value, "local"))
1042 autorebase = AUTOREBASE_LOCAL;
1043 else if (!strcmp(value, "remote"))
1044 autorebase = AUTOREBASE_REMOTE;
1045 else if (!strcmp(value, "always"))
1046 autorebase = AUTOREBASE_ALWAYS;
1047 else
8c3ca351 1048 return error("malformed value for %s", var);
c998ae9b
DS
1049 return 0;
1050 }
a9cc857a 1051
1ab661dd 1052 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
1053 return 0;
1054}
1055
52153747
FAG
1056static int git_default_push_config(const char *var, const char *value)
1057{
1058 if (!strcmp(var, "push.default")) {
1059 if (!value)
1060 return config_error_nonbool(var);
1061 else if (!strcmp(value, "nothing"))
1062 push_default = PUSH_DEFAULT_NOTHING;
1063 else if (!strcmp(value, "matching"))
1064 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
1065 else if (!strcmp(value, "simple"))
1066 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
1067 else if (!strcmp(value, "upstream"))
1068 push_default = PUSH_DEFAULT_UPSTREAM;
1069 else if (!strcmp(value, "tracking")) /* deprecated */
1070 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
1071 else if (!strcmp(value, "current"))
1072 push_default = PUSH_DEFAULT_CURRENT;
1073 else {
8c3ca351 1074 error("malformed value for %s: %s", var, value);
b55e6775
MM
1075 return error("Must be one of nothing, matching, simple, "
1076 "upstream or current.");
52153747
FAG
1077 }
1078 return 0;
1079 }
1080
1081 /* Add other config variables here and to Documentation/config.txt. */
1082 return 0;
1083}
1084
d551a488
MSO
1085static int git_default_mailmap_config(const char *var, const char *value)
1086{
1087 if (!strcmp(var, "mailmap.file"))
9352fd57 1088 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
1089 if (!strcmp(var, "mailmap.blob"))
1090 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
1091
1092 /* Add other config variables here and to Documentation/config.txt. */
1093 return 0;
1094}
1095
1141f492
LT
1096int git_default_config(const char *var, const char *value, void *dummy)
1097{
59556548 1098 if (starts_with(var, "core."))
1141f492
LT
1099 return git_default_core_config(var, value);
1100
59556548 1101 if (starts_with(var, "user."))
9597921b 1102 return git_ident_config(var, value, dummy);
1141f492 1103
59556548 1104 if (starts_with(var, "i18n."))
1141f492
LT
1105 return git_default_i18n_config(var, value);
1106
59556548 1107 if (starts_with(var, "branch."))
1141f492
LT
1108 return git_default_branch_config(var, value);
1109
59556548 1110 if (starts_with(var, "push."))
52153747
FAG
1111 return git_default_push_config(var, value);
1112
59556548 1113 if (starts_with(var, "mailmap."))
d551a488
MSO
1114 return git_default_mailmap_config(var, value);
1115
59556548 1116 if (starts_with(var, "advice."))
75194438
JK
1117 return git_default_advice_config(var, value);
1118
1141f492
LT
1119 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1120 pager_use_color = git_config_bool(var,value);
1121 return 0;
1122 }
1123
568508e7
JH
1124 if (!strcmp(var, "pack.packsizelimit")) {
1125 pack_size_limit_cfg = git_config_ulong(var, value);
1126 return 0;
1127 }
1141f492
LT
1128 /* Add other config variables here and to Documentation/config.txt. */
1129 return 0;
1130}
1131
ca4b5de2 1132/*
b2dc0945 1133 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1134 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1135 * this function.
1136 */
4d8dd149 1137static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
ca4b5de2
HV
1138{
1139 int ret;
1140
1141 /* push config-file parsing state stack */
1142 top->prev = cf;
1143 top->linenr = 1;
1144 top->eof = 0;
1145 strbuf_init(&top->value, 1024);
1146 strbuf_init(&top->var, 1024);
1147 cf = top;
1148
4d8dd149 1149 ret = git_parse_source(fn, data);
ca4b5de2
HV
1150
1151 /* pop config-file parsing state stack */
1152 strbuf_release(&top->value);
1153 strbuf_release(&top->var);
1154 cf = top->prev;
1155
1156 return ret;
1157}
1158
3caec73b 1159static int do_config_from_file(config_fn_t fn,
1b8132d9
VA
1160 const enum config_origin_type origin_type,
1161 const char *name, const char *path, FILE *f,
473166b9 1162 void *data)
17712991 1163{
3caec73b 1164 struct config_source top;
17712991 1165
3caec73b 1166 top.u.file = f;
473166b9 1167 top.origin_type = origin_type;
3caec73b
KS
1168 top.name = name;
1169 top.path = path;
1170 top.die_on_error = 1;
1171 top.do_fgetc = config_file_fgetc;
1172 top.do_ungetc = config_file_ungetc;
1173 top.do_ftell = config_file_ftell;
924aaf3e 1174
3caec73b
KS
1175 return do_config_from(&top, fn, data);
1176}
924aaf3e 1177
3caec73b
KS
1178static int git_config_from_stdin(config_fn_t fn, void *data)
1179{
1b8132d9 1180 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin, data);
3caec73b
KS
1181}
1182
1183int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1184{
1185 int ret = -1;
1186 FILE *f;
924aaf3e 1187
3caec73b
KS
1188 f = fopen(filename, "r");
1189 if (f) {
260d408e 1190 flockfile(f);
1b8132d9 1191 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename, filename, f, data);
260d408e 1192 funlockfile(f);
17712991
LT
1193 fclose(f);
1194 }
1195 return ret;
1196}
10bea152 1197
1b8132d9 1198int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_type,
473166b9 1199 const char *name, const char *buf, size_t len, void *data)
1bc88819
HV
1200{
1201 struct config_source top;
1202
1203 top.u.buf.buf = buf;
1204 top.u.buf.len = len;
1205 top.u.buf.pos = 0;
473166b9 1206 top.origin_type = origin_type;
1bc88819 1207 top.name = name;
d14d4244 1208 top.path = NULL;
b2dc0945 1209 top.die_on_error = 0;
49d6cfa5
JK
1210 top.do_fgetc = config_buf_fgetc;
1211 top.do_ungetc = config_buf_ungetc;
1212 top.do_ftell = config_buf_ftell;
1bc88819
HV
1213
1214 return do_config_from(&top, fn, data);
1215}
1216
1217static int git_config_from_blob_sha1(config_fn_t fn,
1218 const char *name,
1219 const unsigned char *sha1,
1220 void *data)
1221{
1222 enum object_type type;
1223 char *buf;
1224 unsigned long size;
1225 int ret;
1226
1227 buf = read_sha1_file(sha1, &type, &size);
1228 if (!buf)
1229 return error("unable to load config blob object '%s'", name);
1230 if (type != OBJ_BLOB) {
1231 free(buf);
1232 return error("reference '%s' does not point to a blob", name);
1233 }
1234
1b8132d9 1235 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size, data);
1bc88819
HV
1236 free(buf);
1237
1238 return ret;
1239}
1240
1241static int git_config_from_blob_ref(config_fn_t fn,
1242 const char *name,
1243 void *data)
1244{
1245 unsigned char sha1[20];
1246
1247 if (get_sha1(name, sha1) < 0)
1248 return error("unable to resolve config blob '%s'", name);
1249 return git_config_from_blob_sha1(fn, name, sha1, data);
1250}
1251
506b17b1
JS
1252const char *git_etc_gitconfig(void)
1253{
7f0e39fa 1254 static const char *system_wide;
2de9de5e
SP
1255 if (!system_wide)
1256 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1257 return system_wide;
506b17b1
JS
1258}
1259
23b0c478
SP
1260/*
1261 * Parse environment variable 'k' as a boolean (in various
1262 * possible spellings); if missing, use the default value 'def'.
1263 */
0ef37164 1264int git_env_bool(const char *k, int def)
ab88c363
JK
1265{
1266 const char *v = getenv(k);
1267 return v ? git_config_bool(k, v) : def;
1268}
1269
23b0c478
SP
1270/*
1271 * Parse environment variable 'k' as ulong with possibly a unit
1272 * suffix; if missing, use the default value 'val'.
1273 */
1274unsigned long git_env_ulong(const char *k, unsigned long val)
1275{
1276 const char *v = getenv(k);
1277 if (v && !git_parse_ulong(v, &val))
1278 die("failed to parse %s", k);
1279 return val;
1280}
1281
ab88c363
JK
1282int git_config_system(void)
1283{
1284 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1285}
1286
80181868 1287static int do_git_config_sequence(config_fn_t fn, void *data)
4f629539 1288{
c72ee44b 1289 int ret = 0;
509adc33
PT
1290 char *xdg_config = xdg_config_home("config");
1291 char *user_config = expand_user_path("~/.gitconfig");
b9605bc4 1292 char *repo_config = have_git_dir() ? git_pathdup("config") : NULL;
5f1a63e0 1293
9acc5911 1294 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
c72ee44b 1295 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
dc871831
DB
1296 ret += git_config_from_file(fn, git_etc_gitconfig(),
1297 data);
5f1a63e0 1298
9acc5911 1299 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
c72ee44b 1300 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1301 ret += git_config_from_file(fn, xdg_config, data);
21cf3227 1302
c72ee44b 1303 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1304 ret += git_config_from_file(fn, user_config, data);
5f1a63e0 1305
9acc5911 1306 current_parsing_scope = CONFIG_SCOPE_REPO;
c72ee44b 1307 if (repo_config && !access_or_die(repo_config, R_OK, 0))
aa387407 1308 ret += git_config_from_file(fn, repo_config, data);
8b1fa778 1309
9acc5911 1310 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
c72ee44b 1311 if (git_config_from_parameters(fn, data) < 0)
8262aaa2 1312 die(_("unable to parse command-line config"));
8b1fa778 1313
9acc5911 1314 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
21cf3227
HKNN
1315 free(xdg_config);
1316 free(user_config);
80181868 1317 free(repo_config);
c72ee44b 1318 return ret;
4f629539
JH
1319}
1320
c9b5e2a5 1321int git_config_with_options(config_fn_t fn, void *data,
c8985ce0 1322 struct git_config_source *config_source,
1bc88819 1323 int respect_includes)
dbdf5854 1324{
9b25a0b5
JK
1325 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1326
1327 if (respect_includes) {
1328 inc.fn = fn;
1329 inc.data = data;
1330 fn = git_config_include;
1331 data = &inc;
1332 }
dbdf5854 1333
c9b5e2a5
JK
1334 /*
1335 * If we have a specific filename, use it. Otherwise, follow the
1336 * regular lookup sequence.
1337 */
3caec73b
KS
1338 if (config_source && config_source->use_stdin)
1339 return git_config_from_stdin(fn, data);
1340 else if (config_source && config_source->file)
c8985ce0
KS
1341 return git_config_from_file(fn, config_source->file, data);
1342 else if (config_source && config_source->blob)
1343 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1344
80181868 1345 return do_git_config_sequence(fn, data);
dbdf5854
NTND
1346}
1347
155ef25f 1348static void git_config_raw(config_fn_t fn, void *data)
c9b5e2a5 1349{
aace4385
TA
1350 if (git_config_with_options(fn, data, NULL, 1) < 0)
1351 /*
1352 * git_config_with_options() normally returns only
c72ee44b 1353 * zero, as most errors are fatal, and
aace4385
TA
1354 * non-fatal potential errors are guarded by "if"
1355 * statements that are entered only when no error is
1356 * possible.
1357 *
1358 * If we ever encounter a non-fatal error, it means
1359 * something went really wrong and we should stop
1360 * immediately.
1361 */
3a39f61e 1362 die(_("unknown error occurred while reading the configuration files"));
c9b5e2a5
JK
1363}
1364
155ef25f 1365static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1366{
155ef25f
TA
1367 int i, value_index;
1368 struct string_list *values;
1369 struct config_set_element *entry;
1370 struct configset_list *list = &cs->list;
155ef25f
TA
1371
1372 for (i = 0; i < list->nr; i++) {
1373 entry = list->items[i].e;
1374 value_index = list->items[i].value_index;
1375 values = &entry->value_list;
0d44a2da
JK
1376
1377 current_config_kvi = values->items[value_index].util;
1378
1379 if (fn(entry->key, values->items[value_index].string, data) < 0)
1380 git_die_config_linenr(entry->key,
1381 current_config_kvi->filename,
1382 current_config_kvi->linenr);
1383
1384 current_config_kvi = NULL;
155ef25f
TA
1385 }
1386}
1387
1388static void git_config_check_init(void);
1389
1390void git_config(config_fn_t fn, void *data)
1391{
1392 git_config_check_init();
1393 configset_iter(&the_config_set, fn, data);
c9b5e2a5
JK
1394}
1395
3c8687a7
TA
1396static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1397{
1398 struct config_set_element k;
1399 struct config_set_element *found_entry;
1400 char *normalized_key;
3c8687a7
TA
1401 /*
1402 * `key` may come from the user, so normalize it before using it
1403 * for querying entries from the hashmap.
1404 */
270cd9ea 1405 if (git_config_parse_key(key, &normalized_key, NULL))
3c8687a7
TA
1406 return NULL;
1407
1408 hashmap_entry_init(&k, strhash(normalized_key));
1409 k.key = normalized_key;
1410 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1411 free(normalized_key);
1412 return found_entry;
1413}
1414
1415static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1416{
1417 struct config_set_element *e;
3df8fd62 1418 struct string_list_item *si;
155ef25f 1419 struct configset_list_item *l_item;
3df8fd62
TA
1420 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1421
3c8687a7
TA
1422 e = configset_find_element(cs, key);
1423 /*
1424 * Since the keys are being fed by git_config*() callback mechanism, they
1425 * are already normalized. So simply add them without any further munging.
1426 */
1427 if (!e) {
1428 e = xmalloc(sizeof(*e));
1429 hashmap_entry_init(e, strhash(key));
1430 e->key = xstrdup(key);
1431 string_list_init(&e->value_list, 1);
1432 hashmap_add(&cs->config_hash, e);
1433 }
8c53f071 1434 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1435
1436 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1437 l_item = &cs->list.items[cs->list.nr++];
1438 l_item->e = e;
1439 l_item->value_index = e->value_list.nr - 1;
1440
3258258f
JK
1441 if (!cf)
1442 die("BUG: configset_add_value has no source");
1443 if (cf->name) {
3df8fd62
TA
1444 kv_info->filename = strintern(cf->name);
1445 kv_info->linenr = cf->linenr;
1b8132d9 1446 kv_info->origin_type = cf->origin_type;
3df8fd62
TA
1447 } else {
1448 /* for values read from `git_config_from_parameters()` */
1449 kv_info->filename = NULL;
1450 kv_info->linenr = -1;
1b8132d9 1451 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
3df8fd62 1452 }
9acc5911 1453 kv_info->scope = current_parsing_scope;
3df8fd62 1454 si->util = kv_info;
3c8687a7
TA
1455
1456 return 0;
1457}
1458
1459static int config_set_element_cmp(const struct config_set_element *e1,
1460 const struct config_set_element *e2, const void *unused)
1461{
1462 return strcmp(e1->key, e2->key);
1463}
1464
1465void git_configset_init(struct config_set *cs)
1466{
1467 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1468 cs->hash_initialized = 1;
155ef25f
TA
1469 cs->list.nr = 0;
1470 cs->list.alloc = 0;
1471 cs->list.items = NULL;
3c8687a7
TA
1472}
1473
1474void git_configset_clear(struct config_set *cs)
1475{
1476 struct config_set_element *entry;
1477 struct hashmap_iter iter;
1478 if (!cs->hash_initialized)
1479 return;
1480
1481 hashmap_iter_init(&cs->config_hash, &iter);
1482 while ((entry = hashmap_iter_next(&iter))) {
1483 free(entry->key);
3df8fd62 1484 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1485 }
1486 hashmap_free(&cs->config_hash, 1);
1487 cs->hash_initialized = 0;
155ef25f
TA
1488 free(cs->list.items);
1489 cs->list.nr = 0;
1490 cs->list.alloc = 0;
1491 cs->list.items = NULL;
3c8687a7
TA
1492}
1493
1494static int config_set_callback(const char *key, const char *value, void *cb)
1495{
1496 struct config_set *cs = cb;
1497 configset_add_value(cs, key, value);
1498 return 0;
1499}
1500
1501int git_configset_add_file(struct config_set *cs, const char *filename)
1502{
1503 return git_config_from_file(config_set_callback, filename, cs);
1504}
1505
1506int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1507{
1508 const struct string_list *values = NULL;
1509 /*
1510 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1511 * queried key in the files of the configset, the value returned will be the last
1512 * value in the value list for that key.
1513 */
1514 values = git_configset_get_value_multi(cs, key);
1515
1516 if (!values)
1517 return 1;
1518 assert(values->nr > 0);
1519 *value = values->items[values->nr - 1].string;
1520 return 0;
1521}
1522
1523const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1524{
1525 struct config_set_element *e = configset_find_element(cs, key);
1526 return e ? &e->value_list : NULL;
1527}
1528
1529int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1530{
1531 const char *value;
1532 if (!git_configset_get_value(cs, key, &value))
1533 return git_config_string(dest, key, value);
1534 else
1535 return 1;
1536}
1537
1538int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1539{
1540 return git_configset_get_string_const(cs, key, (const char **)dest);
1541}
1542
1543int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1544{
1545 const char *value;
1546 if (!git_configset_get_value(cs, key, &value)) {
1547 *dest = git_config_int(key, value);
1548 return 0;
1549 } else
1550 return 1;
1551}
1552
1553int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1554{
1555 const char *value;
1556 if (!git_configset_get_value(cs, key, &value)) {
1557 *dest = git_config_ulong(key, value);
1558 return 0;
1559 } else
1560 return 1;
1561}
1562
1563int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1564{
1565 const char *value;
1566 if (!git_configset_get_value(cs, key, &value)) {
1567 *dest = git_config_bool(key, value);
1568 return 0;
1569 } else
1570 return 1;
1571}
1572
1573int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1574 int *is_bool, int *dest)
1575{
1576 const char *value;
1577 if (!git_configset_get_value(cs, key, &value)) {
1578 *dest = git_config_bool_or_int(key, value, is_bool);
1579 return 0;
1580 } else
1581 return 1;
1582}
1583
1584int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1585{
1586 const char *value;
1587 if (!git_configset_get_value(cs, key, &value)) {
1588 *dest = git_config_maybe_bool(key, value);
1589 if (*dest == -1)
1590 return -1;
1591 return 0;
1592 } else
1593 return 1;
1594}
1595
1596int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1597{
1598 const char *value;
1599 if (!git_configset_get_value(cs, key, &value))
1600 return git_config_pathname(dest, key, value);
1601 else
1602 return 1;
1603}
1604
1605static void git_config_check_init(void)
1606{
1607 if (the_config_set.hash_initialized)
1608 return;
1609 git_configset_init(&the_config_set);
155ef25f 1610 git_config_raw(config_set_callback, &the_config_set);
3c8687a7
TA
1611}
1612
1613void git_config_clear(void)
1614{
1615 if (!the_config_set.hash_initialized)
1616 return;
1617 git_configset_clear(&the_config_set);
1618}
1619
1620int git_config_get_value(const char *key, const char **value)
1621{
1622 git_config_check_init();
1623 return git_configset_get_value(&the_config_set, key, value);
1624}
1625
1626const struct string_list *git_config_get_value_multi(const char *key)
1627{
1628 git_config_check_init();
1629 return git_configset_get_value_multi(&the_config_set, key);
1630}
1631
1632int git_config_get_string_const(const char *key, const char **dest)
1633{
5a80e97c 1634 int ret;
3c8687a7 1635 git_config_check_init();
5a80e97c
TA
1636 ret = git_configset_get_string_const(&the_config_set, key, dest);
1637 if (ret < 0)
1638 git_die_config(key, NULL);
1639 return ret;
3c8687a7
TA
1640}
1641
1642int git_config_get_string(const char *key, char **dest)
1643{
1644 git_config_check_init();
1645 return git_config_get_string_const(key, (const char **)dest);
1646}
1647
1648int git_config_get_int(const char *key, int *dest)
1649{
1650 git_config_check_init();
1651 return git_configset_get_int(&the_config_set, key, dest);
1652}
1653
1654int git_config_get_ulong(const char *key, unsigned long *dest)
1655{
1656 git_config_check_init();
1657 return git_configset_get_ulong(&the_config_set, key, dest);
1658}
1659
1660int git_config_get_bool(const char *key, int *dest)
1661{
1662 git_config_check_init();
1663 return git_configset_get_bool(&the_config_set, key, dest);
1664}
1665
1666int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1667{
1668 git_config_check_init();
1669 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1670}
1671
1672int git_config_get_maybe_bool(const char *key, int *dest)
1673{
1674 git_config_check_init();
1675 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1676}
1677
1678int git_config_get_pathname(const char *key, const char **dest)
1679{
5a80e97c 1680 int ret;
3c8687a7 1681 git_config_check_init();
5a80e97c
TA
1682 ret = git_configset_get_pathname(&the_config_set, key, dest);
1683 if (ret < 0)
1684 git_die_config(key, NULL);
1685 return ret;
1686}
1687
435ec090
CC
1688int git_config_get_untracked_cache(void)
1689{
1690 int val = -1;
1691 const char *v;
1692
dae6c322
CC
1693 /* Hack for test programs like test-dump-untracked-cache */
1694 if (ignore_untracked_cache_config)
1695 return -1;
1696
435ec090
CC
1697 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
1698 return val;
1699
1700 if (!git_config_get_value("core.untrackedcache", &v)) {
1701 if (!strcasecmp(v, "keep"))
1702 return -1;
1703
1704 error("unknown core.untrackedCache value '%s'; "
1705 "using 'keep' default value", v);
1706 return -1;
1707 }
1708
1709 return -1; /* default value */
1710}
1711
5a80e97c
TA
1712NORETURN
1713void git_die_config_linenr(const char *key, const char *filename, int linenr)
1714{
1715 if (!filename)
1716 die(_("unable to parse '%s' from command-line config"), key);
1717 else
1718 die(_("bad config variable '%s' in file '%s' at line %d"),
1719 key, filename, linenr);
1720}
1721
1722NORETURN __attribute__((format(printf, 2, 3)))
1723void git_die_config(const char *key, const char *err, ...)
1724{
1725 const struct string_list *values;
1726 struct key_value_info *kv_info;
1727
1728 if (err) {
1729 va_list params;
1730 va_start(params, err);
1731 vreportf("error: ", err, params);
1732 va_end(params);
1733 }
1734 values = git_config_get_value_multi(key);
1735 kv_info = values->items[values->nr - 1].util;
1736 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
1737}
1738
10bea152
JS
1739/*
1740 * Find all the stuff for git_config_set() below.
1741 */
4ddba79d 1742
10bea152
JS
1743static struct {
1744 int baselen;
4b25d091 1745 char *key;
f98d863d 1746 int do_not_match;
4b25d091 1747 regex_t *value_regex;
4ddba79d 1748 int multi_replace;
83786fa4
TR
1749 size_t *offset;
1750 unsigned int offset_alloc;
10bea152
JS
1751 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
1752 int seen;
1753} store;
1754
4b25d091 1755static int matches(const char *key, const char *value)
f98d863d 1756{
c1063be2
JK
1757 if (strcmp(key, store.key))
1758 return 0; /* not ours */
1759 if (!store.value_regex)
1760 return 1; /* always matches */
1761 if (store.value_regex == CONFIG_REGEX_NONE)
1762 return 0; /* never matches */
1763
1764 return store.do_not_match ^
1765 (value && !regexec(store.value_regex, value, 0, NULL, 0));
f98d863d
JS
1766}
1767
4b25d091 1768static int store_aux(const char *key, const char *value, void *cb)
10bea152 1769{
ae9ee41d
JH
1770 const char *ep;
1771 size_t section_len;
1772
10bea152
JS
1773 switch (store.state) {
1774 case KEY_SEEN:
f98d863d 1775 if (matches(key, value)) {
4ddba79d 1776 if (store.seen == 1 && store.multi_replace == 0) {
8262aaa2 1777 warning(_("%s has multiple values"), key);
10bea152 1778 }
4ddba79d 1779
83786fa4
TR
1780 ALLOC_GROW(store.offset, store.seen + 1,
1781 store.offset_alloc);
1782
49d6cfa5 1783 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
1784 store.seen++;
1785 }
1786 break;
1787 case SECTION_SEEN:
ae9ee41d
JH
1788 /*
1789 * What we are looking for is in store.key (both
1790 * section and var), and its section part is baselen
1791 * long. We found key (again, both section and var).
1792 * We would want to know if this key is in the same
1793 * section as what we are looking for. We already
1794 * know we are in the same section as what should
1795 * hold store.key.
1796 */
1797 ep = strrchr(key, '.');
1798 section_len = ep - key;
1799
1800 if ((section_len != store.baselen) ||
1801 memcmp(key, store.key, section_len+1)) {
10bea152
JS
1802 store.state = SECTION_END_SEEN;
1803 break;
ae9ee41d
JH
1804 }
1805
1806 /*
1807 * Do not increment matches: this is no match, but we
1808 * just made sure we are in the desired section.
1809 */
83786fa4
TR
1810 ALLOC_GROW(store.offset, store.seen + 1,
1811 store.offset_alloc);
49d6cfa5 1812 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
1813 /* fallthru */
1814 case SECTION_END_SEEN:
1815 case START:
f98d863d 1816 if (matches(key, value)) {
83786fa4
TR
1817 ALLOC_GROW(store.offset, store.seen + 1,
1818 store.offset_alloc);
49d6cfa5 1819 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
1820 store.state = KEY_SEEN;
1821 store.seen++;
d14f7764
LT
1822 } else {
1823 if (strrchr(key, '.') - key == store.baselen &&
bdf0ef08 1824 !strncmp(key, store.key, store.baselen)) {
93ddef3e 1825 store.state = SECTION_SEEN;
83786fa4
TR
1826 ALLOC_GROW(store.offset,
1827 store.seen + 1,
1828 store.offset_alloc);
49d6cfa5 1829 store.offset[store.seen] = cf->do_ftell(cf);
d14f7764 1830 }
bdf0ef08 1831 }
10bea152
JS
1832 }
1833 return 0;
1834}
1835
64c0d71c 1836static int write_error(const char *filename)
480c9e52 1837{
64c0d71c 1838 error("failed to write new configuration file %s", filename);
480c9e52
AW
1839
1840 /* Same error code as "failed to rename". */
1841 return 4;
1842}
1843
4b25d091 1844static int store_write_section(int fd, const char *key)
10bea152 1845{
cb891a59
KH
1846 const char *dot;
1847 int i, success;
f285a2d7 1848 struct strbuf sb = STRBUF_INIT;
d14f7764 1849
cb891a59 1850 dot = memchr(key, '.', store.baselen);
d14f7764 1851 if (dot) {
cb891a59
KH
1852 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1853 for (i = dot - key + 1; i < store.baselen; i++) {
e5c349ba 1854 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
1855 strbuf_addch(&sb, '\\');
1856 strbuf_addch(&sb, key[i]);
d14f7764 1857 }
cb891a59
KH
1858 strbuf_addstr(&sb, "\"]\n");
1859 } else {
1860 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
d14f7764
LT
1861 }
1862
cb891a59
KH
1863 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1864 strbuf_release(&sb);
480c9e52 1865
cb891a59 1866 return success;
10bea152
JS
1867}
1868
4b25d091 1869static int store_write_pair(int fd, const char *key, const char *value)
10bea152 1870{
cb891a59
KH
1871 int i, success;
1872 int length = strlen(key + store.baselen + 1);
1873 const char *quote = "";
f285a2d7 1874 struct strbuf sb = STRBUF_INIT;
cdd4fb15 1875
6281f394
JM
1876 /*
1877 * Check to see if the value needs to be surrounded with a dq pair.
1878 * Note that problematic characters are always backslash-quoted; this
1879 * check is about not losing leading or trailing SP and strings that
1880 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1881 * configuration parser.
1882 */
cdd4fb15 1883 if (value[0] == ' ')
cb891a59 1884 quote = "\"";
cdd4fb15
BG
1885 for (i = 0; value[i]; i++)
1886 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
1887 quote = "\"";
1888 if (i && value[i - 1] == ' ')
1889 quote = "\"";
1890
cb891a59
KH
1891 strbuf_addf(&sb, "\t%.*s = %s",
1892 length, key + store.baselen + 1, quote);
10bea152 1893
10bea152
JS
1894 for (i = 0; value[i]; i++)
1895 switch (value[i]) {
480c9e52 1896 case '\n':
cb891a59 1897 strbuf_addstr(&sb, "\\n");
480c9e52
AW
1898 break;
1899 case '\t':
cb891a59 1900 strbuf_addstr(&sb, "\\t");
480c9e52
AW
1901 break;
1902 case '"':
1903 case '\\':
cb891a59 1904 strbuf_addch(&sb, '\\');
480c9e52 1905 default:
cb891a59 1906 strbuf_addch(&sb, value[i]);
480c9e52
AW
1907 break;
1908 }
cb891a59
KH
1909 strbuf_addf(&sb, "%s\n", quote);
1910
1911 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1912 strbuf_release(&sb);
1913
1914 return success;
10bea152
JS
1915}
1916
4b25d091
FC
1917static ssize_t find_beginning_of_line(const char *contents, size_t size,
1918 size_t offset_, int *found_bracket)
4ddba79d 1919{
dc49cd76
SP
1920 size_t equal_offset = size, bracket_offset = size;
1921 ssize_t offset;
4ddba79d 1922
7a31cc0f 1923contline:
a6080a0a 1924 for (offset = offset_-2; offset > 0
4ddba79d
JS
1925 && contents[offset] != '\n'; offset--)
1926 switch (contents[offset]) {
1927 case '=': equal_offset = offset; break;
1928 case ']': bracket_offset = offset; break;
1929 }
7a31cc0f
FL
1930 if (offset > 0 && contents[offset-1] == '\\') {
1931 offset_ = offset;
1932 goto contline;
1933 }
4ddba79d
JS
1934 if (bracket_offset < equal_offset) {
1935 *found_bracket = 1;
1936 offset = bracket_offset+1;
1937 } else
1938 offset++;
1939
1940 return offset;
1941}
1942
30598ad0
PS
1943int git_config_set_in_file_gently(const char *config_filename,
1944 const char *key, const char *value)
5ec31182 1945{
30598ad0 1946 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
1947}
1948
3d180648
PS
1949void git_config_set_in_file(const char *config_filename,
1950 const char *key, const char *value)
10bea152 1951{
3d180648 1952 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
1953}
1954
30598ad0 1955int git_config_set_gently(const char *key, const char *value)
10bea152 1956{
30598ad0 1957 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
1958}
1959
3d180648 1960void git_config_set(const char *key, const char *value)
b4c8aba6 1961{
3d180648 1962 git_config_set_multivar(key, value, NULL, 0);
10bea152
JS
1963}
1964
b09c53a3
LP
1965/*
1966 * Auxiliary function to sanity-check and split the key into the section
1967 * identifier and variable name.
1968 *
1969 * Returns 0 on success, -1 when there is an invalid character in the key and
1970 * -2 if there is no section name in the key.
1971 *
1972 * store_key - pointer to char* which will hold a copy of the key with
1973 * lowercase section and variable name
1974 * baselen - pointer to int which will hold the length of the
1975 * section + subsection part, can be NULL
1976 */
9e9de18f 1977static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
b09c53a3
LP
1978{
1979 int i, dot, baselen;
1980 const char *last_dot = strrchr(key, '.');
1981
1982 /*
1983 * Since "key" actually contains the section name and the real
1984 * key name separated by a dot, we have to know where the dot is.
1985 */
1986
2169ddc0 1987 if (last_dot == NULL || last_dot == key) {
9e9de18f
JK
1988 if (!quiet)
1989 error("key does not contain a section: %s", key);
7a397419 1990 return -CONFIG_NO_SECTION_OR_NAME;
b09c53a3
LP
1991 }
1992
2169ddc0 1993 if (!last_dot[1]) {
9e9de18f
JK
1994 if (!quiet)
1995 error("key does not contain variable name: %s", key);
7a397419 1996 return -CONFIG_NO_SECTION_OR_NAME;
2169ddc0
LP
1997 }
1998
b09c53a3
LP
1999 baselen = last_dot - key;
2000 if (baselen_)
2001 *baselen_ = baselen;
2002
2003 /*
2004 * Validate the key and while at it, lower case it for matching.
2005 */
9e9de18f 2006 if (store_key)
3733e694 2007 *store_key = xmallocz(strlen(key));
b09c53a3
LP
2008
2009 dot = 0;
2010 for (i = 0; key[i]; i++) {
2011 unsigned char c = key[i];
2012 if (c == '.')
2013 dot = 1;
2014 /* Leave the extended basename untouched.. */
2015 if (!dot || i > baselen) {
2016 if (!iskeychar(c) ||
2017 (i == baselen + 1 && !isalpha(c))) {
9e9de18f
JK
2018 if (!quiet)
2019 error("invalid key: %s", key);
b09c53a3
LP
2020 goto out_free_ret_1;
2021 }
2022 c = tolower(c);
2023 } else if (c == '\n') {
9e9de18f
JK
2024 if (!quiet)
2025 error("invalid key (newline): %s", key);
b09c53a3
LP
2026 goto out_free_ret_1;
2027 }
9e9de18f
JK
2028 if (store_key)
2029 (*store_key)[i] = c;
b09c53a3 2030 }
b09c53a3
LP
2031
2032 return 0;
2033
2034out_free_ret_1:
9e9de18f
JK
2035 if (store_key) {
2036 free(*store_key);
2037 *store_key = NULL;
2038 }
7a397419 2039 return -CONFIG_INVALID_KEY;
b09c53a3
LP
2040}
2041
9e9de18f
JK
2042int git_config_parse_key(const char *key, char **store_key, int *baselen)
2043{
2044 return git_config_parse_key_1(key, store_key, baselen, 0);
2045}
2046
2047int git_config_key_is_valid(const char *key)
2048{
2049 return !git_config_parse_key_1(key, NULL, NULL, 1);
2050}
2051
10bea152
JS
2052/*
2053 * If value==NULL, unset in (remove from) config,
2054 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2055 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2056 * (only add a new one)
4ddba79d
JS
2057 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2058 * else all matching key/values (regardless how many) are removed,
2059 * before the new pair is written.
10bea152
JS
2060 *
2061 * Returns 0 on success.
2062 *
2063 * This function does this:
2064 *
2065 * - it locks the config file by creating ".git/config.lock"
2066 *
2067 * - it then parses the config using store_aux() as validator to find
2068 * the position on the key/value pair to replace. If it is to be unset,
2069 * it must be found exactly once.
2070 *
2071 * - the config file is mmap()ed and the part before the match (if any) is
2072 * written to the lock file, then the changed part and the rest.
2073 *
2074 * - the config file is removed and the lock file rename()d to it.
2075 *
2076 */
30598ad0
PS
2077int git_config_set_multivar_in_file_gently(const char *config_filename,
2078 const char *key, const char *value,
2079 const char *value_regex,
2080 int multi_replace)
10bea152 2081{
54d160ec 2082 int fd = -1, in_fd = -1;
dafc88b1 2083 int ret;
6cbf973c 2084 struct lock_file *lock = NULL;
0a5f5759 2085 char *filename_buf = NULL;
3a1b3126
JK
2086 char *contents = NULL;
2087 size_t contents_sz;
4ddba79d 2088
b09c53a3
LP
2089 /* parse-key returns negative; flip the sign to feed exit(3) */
2090 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2091 if (ret)
dafc88b1 2092 goto out_free;
b17e659d
JS
2093
2094 store.multi_replace = multi_replace;
10bea152 2095
0a5f5759
JK
2096 if (!config_filename)
2097 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2098
2099 /*
6cbf973c 2100 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2101 * contents of .git/config will be written into it.
2102 */
f1064f6b 2103 lock = xcalloc(1, sizeof(struct lock_file));
6cbf973c
BS
2104 fd = hold_lock_file_for_update(lock, config_filename, 0);
2105 if (fd < 0) {
f0658ec9 2106 error_errno("could not lock config file %s", config_filename);
10bea152 2107 free(store.key);
7a397419 2108 ret = CONFIG_NO_LOCK;
dafc88b1 2109 goto out_free;
10bea152
JS
2110 }
2111
2112 /*
2113 * If .git/config does not exist yet, write a minimal version.
2114 */
88fb958b
AR
2115 in_fd = open(config_filename, O_RDONLY);
2116 if ( in_fd < 0 ) {
10bea152
JS
2117 free(store.key);
2118
88fb958b 2119 if ( ENOENT != errno ) {
f0658ec9 2120 error_errno("opening %s", config_filename);
7a397419 2121 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2122 goto out_free;
88fb958b 2123 }
10bea152
JS
2124 /* if nothing to unset, error out */
2125 if (value == NULL) {
7a397419 2126 ret = CONFIG_NOTHING_SET;
dafc88b1 2127 goto out_free;
10bea152
JS
2128 }
2129
4b25d091 2130 store.key = (char *)key;
480c9e52 2131 if (!store_write_section(fd, key) ||
93c1e079
JH
2132 !store_write_pair(fd, key, value))
2133 goto write_err_out;
2134 } else {
88fb958b 2135 struct stat st;
3a1b3126 2136 size_t copy_begin, copy_end;
dc49cd76 2137 int i, new_line = 0;
10bea152
JS
2138
2139 if (value_regex == NULL)
2140 store.value_regex = NULL;
c1063be2
JK
2141 else if (value_regex == CONFIG_REGEX_NONE)
2142 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2143 else {
f98d863d
JS
2144 if (value_regex[0] == '!') {
2145 store.do_not_match = 1;
2146 value_regex++;
2147 } else
2148 store.do_not_match = 0;
2149
2d7320d0 2150 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2151 if (regcomp(store.value_regex, value_regex,
2152 REG_EXTENDED)) {
64c0d71c 2153 error("invalid pattern: %s", value_regex);
10bea152 2154 free(store.value_regex);
7a397419 2155 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2156 goto out_free;
10bea152
JS
2157 }
2158 }
2159
83786fa4 2160 ALLOC_GROW(store.offset, 1, store.offset_alloc);
4ddba79d 2161 store.offset[0] = 0;
10bea152
JS
2162 store.state = START;
2163 store.seen = 0;
2164
2165 /*
2166 * After this, store.offset will contain the *end* offset
2167 * of the last match, or remain at 0 if no match was found.
2168 * As a side effect, we make sure to transform only a valid
2169 * existing config file.
2170 */
ef90d6d4 2171 if (git_config_from_file(store_aux, config_filename, NULL)) {
64c0d71c 2172 error("invalid config file %s", config_filename);
10bea152 2173 free(store.key);
c1063be2
JK
2174 if (store.value_regex != NULL &&
2175 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2176 regfree(store.value_regex);
2177 free(store.value_regex);
2178 }
7a397419 2179 ret = CONFIG_INVALID_FILE;
dafc88b1 2180 goto out_free;
10bea152
JS
2181 }
2182
2183 free(store.key);
c1063be2
JK
2184 if (store.value_regex != NULL &&
2185 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2186 regfree(store.value_regex);
2187 free(store.value_regex);
2188 }
2189
4ddba79d
JS
2190 /* if nothing to unset, or too many matches, error out */
2191 if ((store.seen == 0 && value == NULL) ||
2192 (store.seen > 1 && multi_replace == 0)) {
7a397419 2193 ret = CONFIG_NOTHING_SET;
dafc88b1 2194 goto out_free;
10bea152
JS
2195 }
2196
88fb958b 2197 fstat(in_fd, &st);
dc49cd76 2198 contents_sz = xsize_t(st.st_size);
1570856b
JK
2199 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2200 MAP_PRIVATE, in_fd, 0);
2201 if (contents == MAP_FAILED) {
0e8771f1
JK
2202 if (errno == ENODEV && S_ISDIR(st.st_mode))
2203 errno = EISDIR;
f0658ec9 2204 error_errno("unable to mmap '%s'", config_filename);
1570856b
JK
2205 ret = CONFIG_INVALID_FILE;
2206 contents = NULL;
2207 goto out_free;
2208 }
10bea152 2209 close(in_fd);
54d160ec 2210 in_fd = -1;
10bea152 2211
b4fb09e4 2212 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9 2213 error_errno("chmod on %s failed", get_lock_file_path(lock));
daa22c6f
EW
2214 ret = CONFIG_NO_WRITE;
2215 goto out_free;
2216 }
2217
4ddba79d
JS
2218 if (store.seen == 0)
2219 store.seen = 1;
2220
2221 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2222 if (store.offset[i] == 0) {
dc49cd76 2223 store.offset[i] = copy_end = contents_sz;
4ddba79d
JS
2224 } else if (store.state != KEY_SEEN) {
2225 copy_end = store.offset[i];
10bea152 2226 } else
4ddba79d 2227 copy_end = find_beginning_of_line(
dc49cd76 2228 contents, contents_sz,
4ddba79d
JS
2229 store.offset[i]-2, &new_line);
2230
02e5ba4a
JK
2231 if (copy_end > 0 && contents[copy_end-1] != '\n')
2232 new_line = 1;
2233
4ddba79d
JS
2234 /* write the first part of the config */
2235 if (copy_end > copy_begin) {
93c1e079
JH
2236 if (write_in_full(fd, contents + copy_begin,
2237 copy_end - copy_begin) <
2238 copy_end - copy_begin)
2239 goto write_err_out;
2240 if (new_line &&
2b7ca830 2241 write_str_in_full(fd, "\n") != 1)
93c1e079 2242 goto write_err_out;
4ddba79d
JS
2243 }
2244 copy_begin = store.offset[i];
10bea152
JS
2245 }
2246
10bea152
JS
2247 /* write the pair (value == NULL means unset) */
2248 if (value != NULL) {
93c1e079
JH
2249 if (store.state == START) {
2250 if (!store_write_section(fd, key))
2251 goto write_err_out;
480c9e52 2252 }
93c1e079
JH
2253 if (!store_write_pair(fd, key, value))
2254 goto write_err_out;
10bea152
JS
2255 }
2256
2257 /* write the rest of the config */
dc49cd76 2258 if (copy_begin < contents_sz)
93c1e079 2259 if (write_in_full(fd, contents + copy_begin,
dc49cd76
SP
2260 contents_sz - copy_begin) <
2261 contents_sz - copy_begin)
93c1e079 2262 goto write_err_out;
7a64592c
KB
2263
2264 munmap(contents, contents_sz);
2265 contents = NULL;
10bea152
JS
2266 }
2267
4ed7cd3a 2268 if (commit_lock_file(lock) < 0) {
f0658ec9 2269 error_errno("could not write config file %s", config_filename);
7a397419 2270 ret = CONFIG_NO_WRITE;
e831855e 2271 lock = NULL;
dafc88b1 2272 goto out_free;
10bea152
JS
2273 }
2274
6cbf973c
BS
2275 /*
2276 * lock is committed, so don't try to roll it back below.
2277 * NOTE: Since lockfile.c keeps a linked list of all created
2278 * lock_file structures, it isn't safe to free(lock). It's
2279 * better to just leave it hanging around.
2280 */
2281 lock = NULL;
dafc88b1
SH
2282 ret = 0;
2283
3c8687a7
TA
2284 /* Invalidate the config cache */
2285 git_config_clear();
2286
dafc88b1 2287out_free:
6cbf973c
BS
2288 if (lock)
2289 rollback_lock_file(lock);
0a5f5759 2290 free(filename_buf);
3a1b3126
JK
2291 if (contents)
2292 munmap(contents, contents_sz);
54d160ec
SS
2293 if (in_fd >= 0)
2294 close(in_fd);
dafc88b1 2295 return ret;
93c1e079
JH
2296
2297write_err_out:
b4fb09e4 2298 ret = write_error(get_lock_file_path(lock));
93c1e079
JH
2299 goto out_free;
2300
10bea152
JS
2301}
2302
3d180648
PS
2303void git_config_set_multivar_in_file(const char *config_filename,
2304 const char *key, const char *value,
2305 const char *value_regex, int multi_replace)
b4c8aba6 2306{
1cae428e
JK
2307 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2308 value_regex, multi_replace))
2309 return;
2310 if (value)
8c3ca351 2311 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2312 else
2313 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2314}
2315
30598ad0
PS
2316int git_config_set_multivar_gently(const char *key, const char *value,
2317 const char *value_regex, int multi_replace)
5ec31182 2318{
30598ad0
PS
2319 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2320 multi_replace);
5ec31182
RR
2321}
2322
3d180648
PS
2323void git_config_set_multivar(const char *key, const char *value,
2324 const char *value_regex, int multi_replace)
5ec31182 2325{
3d180648
PS
2326 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2327 multi_replace);
5ec31182
RR
2328}
2329
118f8b24
PB
2330static int section_name_match (const char *buf, const char *name)
2331{
2332 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2333 if (buf[i] != '[')
2334 return 0;
2335 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2336 if (!dot && isspace(buf[i])) {
2337 dot = 1;
2338 if (name[j++] != '.')
2339 break;
2340 for (i++; isspace(buf[i]); i++)
2341 ; /* do nothing */
2342 if (buf[i] != '"')
2343 break;
2344 continue;
2345 }
2346 if (buf[i] == '\\' && dot)
2347 i++;
2348 else if (buf[i] == '"' && dot) {
2349 for (i++; isspace(buf[i]); i++)
2350 ; /* do_nothing */
2351 break;
2352 }
2353 if (buf[i] != name[j++])
2354 break;
2355 }
a4c0d463
AV
2356 if (buf[i] == ']' && name[j] == 0) {
2357 /*
2358 * We match, now just find the right length offset by
2359 * gobbling up any whitespace after it, as well
2360 */
2361 i++;
2362 for (; buf[i] && isspace(buf[i]); i++)
2363 ; /* do nothing */
2364 return i;
2365 }
2366 return 0;
118f8b24
PB
2367}
2368
94a35b1a
JK
2369static int section_name_is_ok(const char *name)
2370{
2371 /* Empty section names are bogus. */
2372 if (!*name)
2373 return 0;
2374
2375 /*
2376 * Before a dot, we must be alphanumeric or dash. After the first dot,
2377 * anything goes, so we can stop checking.
2378 */
2379 for (; *name && *name != '.'; name++)
2380 if (*name != '-' && !isalnum(*name))
2381 return 0;
2382 return 1;
2383}
2384
118f8b24 2385/* if new_name == NULL, the section is removed instead */
42bd39b5
JK
2386int git_config_rename_section_in_file(const char *config_filename,
2387 const char *old_name, const char *new_name)
0667fcfb 2388{
118f8b24 2389 int ret = 0, remove = 0;
42bd39b5 2390 char *filename_buf = NULL;
94a35b1a 2391 struct lock_file *lock;
0667fcfb
JS
2392 int out_fd;
2393 char buf[1024];
924aaf3e 2394 FILE *config_file;
daa22c6f 2395 struct stat st;
0667fcfb 2396
94a35b1a
JK
2397 if (new_name && !section_name_is_ok(new_name)) {
2398 ret = error("invalid section name: %s", new_name);
2399 goto out;
2400 }
2401
42bd39b5
JK
2402 if (!config_filename)
2403 config_filename = filename_buf = git_pathdup("config");
2404
f1064f6b 2405 lock = xcalloc(1, sizeof(struct lock_file));
0667fcfb 2406 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
fc1905bb 2407 if (out_fd < 0) {
64c0d71c 2408 ret = error("could not lock config file %s", config_filename);
fc1905bb
JH
2409 goto out;
2410 }
0667fcfb 2411
fc1905bb 2412 if (!(config_file = fopen(config_filename, "rb"))) {
01ebb9dc
GB
2413 /* no config file means nothing to rename, no error */
2414 goto unlock_and_out;
fc1905bb 2415 }
0667fcfb 2416
daa22c6f
EW
2417 fstat(fileno(config_file), &st);
2418
b4fb09e4 2419 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9
NTND
2420 ret = error_errno("chmod on %s failed",
2421 get_lock_file_path(lock));
daa22c6f
EW
2422 goto out;
2423 }
2424
0667fcfb
JS
2425 while (fgets(buf, sizeof(buf), config_file)) {
2426 int i;
480c9e52 2427 int length;
9a5abfc7 2428 char *output = buf;
0667fcfb
JS
2429 for (i = 0; buf[i] && isspace(buf[i]); i++)
2430 ; /* do nothing */
2431 if (buf[i] == '[') {
2432 /* it's a section */
a4c0d463
AV
2433 int offset = section_name_match(&buf[i], old_name);
2434 if (offset > 0) {
118f8b24
PB
2435 ret++;
2436 if (new_name == NULL) {
2437 remove = 1;
0667fcfb
JS
2438 continue;
2439 }
0667fcfb 2440 store.baselen = strlen(new_name);
480c9e52 2441 if (!store_write_section(out_fd, new_name)) {
b4fb09e4 2442 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2443 goto out;
2444 }
9a5abfc7
AV
2445 /*
2446 * We wrote out the new section, with
2447 * a newline, now skip the old
2448 * section's length
2449 */
2450 output += offset + i;
2451 if (strlen(output) > 0) {
2452 /*
2453 * More content means there's
2454 * a declaration to put on the
2455 * next line; indent with a
2456 * tab
2457 */
2458 output -= 1;
2459 output[0] = '\t';
2460 }
0667fcfb 2461 }
118f8b24 2462 remove = 0;
0667fcfb 2463 }
118f8b24
PB
2464 if (remove)
2465 continue;
9a5abfc7
AV
2466 length = strlen(output);
2467 if (write_in_full(out_fd, output, length) != length) {
b4fb09e4 2468 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2469 goto out;
2470 }
0667fcfb 2471 }
fc1905bb 2472 fclose(config_file);
8b590075 2473unlock_and_out:
4ed7cd3a 2474 if (commit_lock_file(lock) < 0)
f0658ec9
NTND
2475 ret = error_errno("could not write config file %s",
2476 config_filename);
8b590075 2477out:
42bd39b5 2478 free(filename_buf);
0667fcfb
JS
2479 return ret;
2480}
40ea4ed9 2481
42bd39b5
JK
2482int git_config_rename_section(const char *old_name, const char *new_name)
2483{
4a7bb5ba 2484 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
2485}
2486
40ea4ed9
JH
2487/*
2488 * Call this to report error for your variable that should not
2489 * get a boolean value (i.e. "[my] var" means "true").
2490 */
a469a101 2491#undef config_error_nonbool
40ea4ed9
JH
2492int config_error_nonbool(const char *var)
2493{
8c3ca351 2494 return error("missing value for '%s'", var);
40ea4ed9 2495}
1b86bbb0
JK
2496
2497int parse_config_key(const char *var,
2498 const char *section,
2499 const char **subsection, int *subsection_len,
2500 const char **key)
2501{
2502 int section_len = strlen(section);
2503 const char *dot;
2504
2505 /* Does it start with "section." ? */
59556548 2506 if (!starts_with(var, section) || var[section_len] != '.')
1b86bbb0
JK
2507 return -1;
2508
2509 /*
2510 * Find the key; we don't know yet if we have a subsection, but we must
2511 * parse backwards from the end, since the subsection may have dots in
2512 * it, too.
2513 */
2514 dot = strrchr(var, '.');
2515 *key = dot + 1;
2516
2517 /* Did we have a subsection at all? */
2518 if (dot == var + section_len) {
2519 *subsection = NULL;
2520 *subsection_len = 0;
2521 }
2522 else {
2523 *subsection = var + section_len + 1;
2524 *subsection_len = dot - *subsection;
2525 }
2526
2527 return 0;
2528}
473166b9
LS
2529
2530const char *current_config_origin_type(void)
2531{
1b8132d9 2532 int type;
0d44a2da
JK
2533 if (current_config_kvi)
2534 type = current_config_kvi->origin_type;
2535 else if(cf)
2536 type = cf->origin_type;
2537 else
3258258f 2538 die("BUG: current_config_origin_type called outside config callback");
1b8132d9
VA
2539
2540 switch (type) {
2541 case CONFIG_ORIGIN_BLOB:
2542 return "blob";
2543 case CONFIG_ORIGIN_FILE:
2544 return "file";
2545 case CONFIG_ORIGIN_STDIN:
2546 return "standard input";
2547 case CONFIG_ORIGIN_SUBMODULE_BLOB:
2548 return "submodule-blob";
2549 case CONFIG_ORIGIN_CMDLINE:
2550 return "command line";
2551 default:
2552 die("BUG: unknown config origin type");
2553 }
473166b9
LS
2554}
2555
2556const char *current_config_name(void)
2557{
0d44a2da
JK
2558 const char *name;
2559 if (current_config_kvi)
2560 name = current_config_kvi->filename;
2561 else if (cf)
2562 name = cf->name;
2563 else
3258258f 2564 die("BUG: current_config_name called outside config callback");
0d44a2da 2565 return name ? name : "";
473166b9 2566}
9acc5911
JK
2567
2568enum config_scope current_config_scope(void)
2569{
2570 if (current_config_kvi)
2571 return current_config_kvi->scope;
2572 else
2573 return current_parsing_scope;
473166b9 2574}