git_config_set_multivar_in_file: all non-zero returns are errors
[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;
473166b9 27 const char *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
41static struct config_source *cf;
924aaf3e 42
960ccca6
DH
43static int zlib_compression_seen;
44
3c8687a7
TA
45/*
46 * Default config_set that contains key-value pairs from the usual set of config
47 * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
48 * config file and the global /etc/gitconfig)
49 */
50static struct config_set the_config_set;
51
4d8dd149
HV
52static int config_file_fgetc(struct config_source *conf)
53{
260d408e 54 return getc_unlocked(conf->u.file);
4d8dd149
HV
55}
56
57static int config_file_ungetc(int c, struct config_source *conf)
58{
59 return ungetc(c, conf->u.file);
60}
61
62static long config_file_ftell(struct config_source *conf)
63{
64 return ftell(conf->u.file);
65}
66
1bc88819
HV
67
68static int config_buf_fgetc(struct config_source *conf)
69{
70 if (conf->u.buf.pos < conf->u.buf.len)
71 return conf->u.buf.buf[conf->u.buf.pos++];
72
73 return EOF;
74}
75
76static int config_buf_ungetc(int c, struct config_source *conf)
77{
1d0655c1
JK
78 if (conf->u.buf.pos > 0) {
79 conf->u.buf.pos--;
80 if (conf->u.buf.buf[conf->u.buf.pos] != c)
81 die("BUG: config_buf can only ungetc the same character");
82 return c;
83 }
1bc88819
HV
84
85 return EOF;
86}
87
88static long config_buf_ftell(struct config_source *conf)
89{
90 return conf->u.buf.pos;
91}
92
9b25a0b5
JK
93#define MAX_INCLUDE_DEPTH 10
94static const char include_depth_advice[] =
95"exceeded maximum include depth (%d) while including\n"
96" %s\n"
97"from\n"
98" %s\n"
99"Do you have circular includes?";
100static int handle_path_include(const char *path, struct config_include_data *inc)
101{
102 int ret = 0;
103 struct strbuf buf = STRBUF_INIT;
67beb600 104 char *expanded;
4c0a89fc 105
67beb600
JK
106 if (!path)
107 return config_error_nonbool("include.path");
108
109 expanded = expand_user_path(path);
4c0a89fc 110 if (!expanded)
8c3ca351 111 return error("could not expand include path '%s'", path);
4c0a89fc 112 path = expanded;
9b25a0b5
JK
113
114 /*
115 * Use an absolute path as-is, but interpret relative paths
116 * based on the including config file.
117 */
118 if (!is_absolute_path(path)) {
119 char *slash;
120
d14d4244 121 if (!cf || !cf->path)
9b25a0b5
JK
122 return error("relative config includes must come from files");
123
d14d4244 124 slash = find_last_dir_sep(cf->path);
9b25a0b5 125 if (slash)
d14d4244 126 strbuf_add(&buf, cf->path, slash - cf->path + 1);
9b25a0b5
JK
127 strbuf_addstr(&buf, path);
128 path = buf.buf;
129 }
130
4698c8fe 131 if (!access_or_die(path, R_OK, 0)) {
9b25a0b5
JK
132 if (++inc->depth > MAX_INCLUDE_DEPTH)
133 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
134 cf && cf->name ? cf->name : "the command line");
135 ret = git_config_from_file(git_config_include, path, inc);
136 inc->depth--;
137 }
138 strbuf_release(&buf);
4c0a89fc 139 free(expanded);
9b25a0b5
JK
140 return ret;
141}
142
143int git_config_include(const char *var, const char *value, void *data)
144{
145 struct config_include_data *inc = data;
9b25a0b5
JK
146 int ret;
147
148 /*
149 * Pass along all values, including "include" directives; this makes it
150 * possible to query information on the includes themselves.
151 */
152 ret = inc->fn(var, value, inc->data);
153 if (ret < 0)
154 return ret;
155
37007c3a 156 if (!strcmp(var, "include.path"))
9b25a0b5
JK
157 ret = handle_path_include(value, inc);
158 return ret;
159}
160
2b64fc89
JK
161void git_config_push_parameter(const char *text)
162{
163 struct strbuf env = STRBUF_INIT;
164 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
165 if (old) {
166 strbuf_addstr(&env, old);
167 strbuf_addch(&env, ' ');
168 }
169 sq_quote_buf(&env, text);
170 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
171 strbuf_release(&env);
172}
173
2496844b
JK
174int git_config_parse_parameter(const char *text,
175 config_fn_t fn, void *data)
8b1fa778 176{
a789ca70 177 const char *value;
572e4f6a 178 struct strbuf **pair;
a789ca70 179
f77bccae 180 pair = strbuf_split_str(text, '=', 2);
c5d6350b
JK
181 if (!pair[0])
182 return error("bogus config parameter: %s", text);
a789ca70
JH
183
184 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
572e4f6a 185 strbuf_setlen(pair[0], pair[0]->len - 1);
a789ca70
JH
186 value = pair[1] ? pair[1]->buf : "";
187 } else {
188 value = NULL;
189 }
190
572e4f6a
AR
191 strbuf_trim(pair[0]);
192 if (!pair[0]->len) {
193 strbuf_list_free(pair);
06eb708f 194 return error("bogus config parameter: %s", text);
8b1fa778 195 }
ffb20ce1 196 strbuf_tolower(pair[0]);
a789ca70 197 if (fn(pair[0]->buf, value, data) < 0) {
06eb708f
JK
198 strbuf_list_free(pair);
199 return -1;
572e4f6a
AR
200 }
201 strbuf_list_free(pair);
8b1fa778
AR
202 return 0;
203}
204
06eb708f
JK
205int git_config_from_parameters(config_fn_t fn, void *data)
206{
2b64fc89
JK
207 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
208 char *envw;
209 const char **argv = NULL;
210 int nr = 0, alloc = 0;
211 int i;
212
213 if (!env)
214 return 0;
215 /* sq_dequote will write over it */
216 envw = xstrdup(env);
217
218 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
219 free(envw);
220 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
221 }
222
223 for (i = 0; i < nr; i++) {
06eb708f 224 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
2b64fc89
JK
225 free(argv);
226 free(envw);
227 return -1;
228 }
229 }
230
231 free(argv);
232 free(envw);
06eb708f 233 return nr > 0;
2b64fc89
JK
234}
235
17712991
LT
236static int get_next_char(void)
237{
49d6cfa5 238 int c = cf->do_fgetc(cf);
17712991 239
dbb9a812
HV
240 if (c == '\r') {
241 /* DOS like systems */
49d6cfa5 242 c = cf->do_fgetc(cf);
dbb9a812 243 if (c != '\n') {
5e0be134
JK
244 if (c != EOF)
245 cf->do_ungetc(c, cf);
dbb9a812 246 c = '\r';
17712991
LT
247 }
248 }
dbb9a812
HV
249 if (c == '\n')
250 cf->linenr++;
251 if (c == EOF) {
252 cf->eof = 1;
b3b3f60b 253 cf->linenr++;
dbb9a812
HV
254 c = '\n';
255 }
17712991
LT
256 return c;
257}
258
259static char *parse_value(void)
260{
e96c19c5 261 int quote = 0, comment = 0, space = 0;
17712991 262
924aaf3e 263 strbuf_reset(&cf->value);
17712991
LT
264 for (;;) {
265 int c = get_next_char();
17712991 266 if (c == '\n') {
4b340593
MS
267 if (quote) {
268 cf->linenr--;
17712991 269 return NULL;
4b340593 270 }
924aaf3e 271 return cf->value.buf;
17712991
LT
272 }
273 if (comment)
274 continue;
275 if (isspace(c) && !quote) {
924aaf3e 276 if (cf->value.len)
ebdaae37 277 space++;
17712991
LT
278 continue;
279 }
7ebdba61
JS
280 if (!quote) {
281 if (c == ';' || c == '#') {
282 comment = 1;
283 continue;
284 }
285 }
ebdaae37 286 for (; space; space--)
924aaf3e 287 strbuf_addch(&cf->value, ' ');
17712991
LT
288 if (c == '\\') {
289 c = get_next_char();
290 switch (c) {
291 case '\n':
292 continue;
293 case 't':
294 c = '\t';
295 break;
296 case 'b':
297 c = '\b';
298 break;
299 case 'n':
300 c = '\n';
301 break;
5cbb401d
LT
302 /* Some characters escape as themselves */
303 case '\\': case '"':
304 break;
305 /* Reject unknown escape sequences */
306 default:
307 return NULL;
17712991 308 }
924aaf3e 309 strbuf_addch(&cf->value, c);
17712991
LT
310 continue;
311 }
312 if (c == '"') {
313 quote = 1-quote;
314 continue;
315 }
924aaf3e 316 strbuf_addch(&cf->value, c);
17712991
LT
317 }
318}
319
38c5afa8
LT
320static inline int iskeychar(int c)
321{
322 return isalnum(c) || c == '-';
323}
324
0971e992 325static int get_value(config_fn_t fn, void *data, struct strbuf *name)
17712991
LT
326{
327 int c;
328 char *value;
b3b3f60b 329 int ret;
17712991
LT
330
331 /* Get the full name */
332 for (;;) {
333 c = get_next_char();
924aaf3e 334 if (cf->eof)
17712991 335 break;
38c5afa8 336 if (!iskeychar(c))
17712991 337 break;
0971e992 338 strbuf_addch(name, tolower(c));
17712991 339 }
0971e992 340
17712991
LT
341 while (c == ' ' || c == '\t')
342 c = get_next_char();
343
344 value = NULL;
345 if (c != '\n') {
346 if (c != '=')
347 return -1;
348 value = parse_value();
349 if (!value)
350 return -1;
351 }
b3b3f60b
MM
352 /*
353 * We already consumed the \n, but we need linenr to point to
354 * the line we just parsed during the call to fn to get
355 * accurate line number in error messages.
356 */
357 cf->linenr--;
358 ret = fn(name->buf, value, data);
359 cf->linenr++;
360 return ret;
17712991
LT
361}
362
0971e992 363static int get_extended_base_var(struct strbuf *name, int c)
d14f7764
LT
364{
365 do {
366 if (c == '\n')
4b340593 367 goto error_incomplete_line;
d14f7764
LT
368 c = get_next_char();
369 } while (isspace(c));
370
371 /* We require the format to be '[base "extension"]' */
372 if (c != '"')
373 return -1;
0971e992 374 strbuf_addch(name, '.');
d14f7764
LT
375
376 for (;;) {
377 int c = get_next_char();
378 if (c == '\n')
4b340593 379 goto error_incomplete_line;
d14f7764
LT
380 if (c == '"')
381 break;
382 if (c == '\\') {
383 c = get_next_char();
384 if (c == '\n')
4b340593 385 goto error_incomplete_line;
d14f7764 386 }
0971e992 387 strbuf_addch(name, c);
d14f7764
LT
388 }
389
390 /* Final ']' */
391 if (get_next_char() != ']')
392 return -1;
0971e992 393 return 0;
4b340593
MS
394error_incomplete_line:
395 cf->linenr--;
396 return -1;
d14f7764
LT
397}
398
0971e992 399static int get_base_var(struct strbuf *name)
17712991 400{
17712991
LT
401 for (;;) {
402 int c = get_next_char();
924aaf3e 403 if (cf->eof)
17712991
LT
404 return -1;
405 if (c == ']')
0971e992 406 return 0;
d14f7764 407 if (isspace(c))
0971e992 408 return get_extended_base_var(name, c);
38c5afa8 409 if (!iskeychar(c) && c != '.')
17712991 410 return -1;
0971e992 411 strbuf_addch(name, tolower(c));
17712991
LT
412 }
413}
414
4d8dd149 415static int git_parse_source(config_fn_t fn, void *data)
17712991
LT
416{
417 int comment = 0;
418 int baselen = 0;
0971e992 419 struct strbuf *var = &cf->var;
17712991 420
de056402 421 /* U+FEFF Byte Order Mark in UTF8 */
599446dc 422 const char *bomptr = utf8_bom;
de056402 423
17712991
LT
424 for (;;) {
425 int c = get_next_char();
de056402
PB
426 if (bomptr && *bomptr) {
427 /* We are at the file beginning; skip UTF8-encoded BOM
428 * if present. Sane editors won't put this in on their
429 * own, but e.g. Windows Notepad will do it happily. */
599446dc 430 if (c == (*bomptr & 0377)) {
de056402
PB
431 bomptr++;
432 continue;
433 } else {
434 /* Do not tolerate partial BOM. */
435 if (bomptr != utf8_bom)
436 break;
437 /* No BOM at file beginning. Cool. */
438 bomptr = NULL;
439 }
440 }
17712991 441 if (c == '\n') {
924aaf3e 442 if (cf->eof)
17712991
LT
443 return 0;
444 comment = 0;
445 continue;
446 }
447 if (comment || isspace(c))
448 continue;
449 if (c == '#' || c == ';') {
450 comment = 1;
451 continue;
452 }
453 if (c == '[') {
0971e992
BW
454 /* Reset prior to determining a new stem */
455 strbuf_reset(var);
456 if (get_base_var(var) < 0 || var->len < 1)
17712991 457 break;
0971e992
BW
458 strbuf_addch(var, '.');
459 baselen = var->len;
17712991
LT
460 continue;
461 }
462 if (!isalpha(c))
463 break;
0971e992
BW
464 /*
465 * Truncate the var name back to the section header
466 * stem prior to grabbing the suffix part of the name
467 * and the value.
468 */
469 strbuf_setlen(var, baselen);
470 strbuf_addch(var, tolower(c));
471 if (get_value(fn, data, var) < 0)
17712991
LT
472 break;
473 }
b2dc0945 474 if (cf->die_on_error)
473166b9 475 die(_("bad config line %d in %s %s"), cf->linenr, cf->origin_type, cf->name);
b2dc0945 476 else
473166b9 477 return error(_("bad config line %d in %s %s"), cf->linenr, cf->origin_type, cf->name);
17712991
LT
478}
479
ebaa1bd4 480static int parse_unit_factor(const char *end, uintmax_t *val)
0b87b6e0
BD
481{
482 if (!*end)
483 return 1;
c8deb5a1
SP
484 else if (!strcasecmp(end, "k")) {
485 *val *= 1024;
486 return 1;
487 }
488 else if (!strcasecmp(end, "m")) {
489 *val *= 1024 * 1024;
490 return 1;
491 }
492 else if (!strcasecmp(end, "g")) {
493 *val *= 1024 * 1024 * 1024;
494 return 1;
495 }
496 return 0;
0b87b6e0
BD
497}
498
7192777d 499static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
0b87b6e0
BD
500{
501 if (value && *value) {
502 char *end;
ebaa1bd4
NA
503 intmax_t val;
504 uintmax_t uval;
505 uintmax_t factor = 1;
506
507 errno = 0;
508 val = strtoimax(value, &end, 0);
509 if (errno == ERANGE)
510 return 0;
33fdd77e
JK
511 if (!parse_unit_factor(end, &factor)) {
512 errno = EINVAL;
c8deb5a1 513 return 0;
33fdd77e 514 }
83915ba5 515 uval = labs(val);
ebaa1bd4 516 uval *= factor;
83915ba5 517 if (uval > max || labs(val) > uval) {
33fdd77e 518 errno = ERANGE;
ebaa1bd4 519 return 0;
33fdd77e 520 }
ebaa1bd4
NA
521 val *= factor;
522 *ret = val;
0b87b6e0
BD
523 return 1;
524 }
33fdd77e 525 errno = EINVAL;
0b87b6e0
BD
526 return 0;
527}
528
0b4dc661 529static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
17712991
LT
530{
531 if (value && *value) {
532 char *end;
ebaa1bd4
NA
533 uintmax_t val;
534 uintmax_t oldval;
535
536 errno = 0;
537 val = strtoumax(value, &end, 0);
538 if (errno == ERANGE)
539 return 0;
540 oldval = val;
33fdd77e
JK
541 if (!parse_unit_factor(end, &val)) {
542 errno = EINVAL;
c8deb5a1 543 return 0;
33fdd77e
JK
544 }
545 if (val > max || oldval > val) {
546 errno = ERANGE;
ebaa1bd4 547 return 0;
33fdd77e 548 }
c8deb5a1 549 *ret = val;
0b87b6e0 550 return 1;
17712991 551 }
33fdd77e 552 errno = EINVAL;
0b87b6e0
BD
553 return 0;
554}
555
42d194e9 556static int git_parse_int(const char *value, int *ret)
c1867cea 557{
7192777d 558 intmax_t tmp;
42d194e9 559 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
7192777d
JK
560 return 0;
561 *ret = tmp;
562 return 1;
563}
564
00160242
JK
565static int git_parse_int64(const char *value, int64_t *ret)
566{
567 intmax_t tmp;
568 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
569 return 0;
570 *ret = tmp;
571 return 1;
572}
573
7192777d
JK
574int git_parse_ulong(const char *value, unsigned long *ret)
575{
576 uintmax_t tmp;
577 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
578 return 0;
579 *ret = tmp;
580 return 1;
581}
582
06bdc23b 583NORETURN
2f666581 584static void die_bad_number(const char *name, const char *value)
c1867cea 585{
2f666581
JK
586 const char *reason = errno == ERANGE ?
587 "out of range" :
588 "invalid unit";
589 if (!value)
590 value = "";
591
473166b9
LS
592 if (cf && cf->origin_type && cf->name)
593 die(_("bad numeric config value '%s' for '%s' in %s %s: %s"),
594 value, name, cf->origin_type, cf->name, reason);
8262aaa2 595 die(_("bad numeric config value '%s' for '%s': %s"), value, name, reason);
c1867cea
JK
596}
597
0b87b6e0
BD
598int git_config_int(const char *name, const char *value)
599{
42d194e9
JK
600 int ret;
601 if (!git_parse_int(value, &ret))
2f666581 602 die_bad_number(name, value);
0b87b6e0
BD
603 return ret;
604}
605
00160242
JK
606int64_t git_config_int64(const char *name, const char *value)
607{
608 int64_t ret;
609 if (!git_parse_int64(value, &ret))
610 die_bad_number(name, value);
0b87b6e0
BD
611 return ret;
612}
613
614unsigned long git_config_ulong(const char *name, const char *value)
615{
616 unsigned long ret;
617 if (!git_parse_ulong(value, &ret))
2f666581 618 die_bad_number(name, value);
0b87b6e0 619 return ret;
17712991
LT
620}
621
9a549d43 622int git_parse_maybe_bool(const char *value)
17712991
LT
623{
624 if (!value)
625 return 1;
626 if (!*value)
627 return 0;
8420ccd8
JH
628 if (!strcasecmp(value, "true")
629 || !strcasecmp(value, "yes")
630 || !strcasecmp(value, "on"))
17712991 631 return 1;
8420ccd8
JH
632 if (!strcasecmp(value, "false")
633 || !strcasecmp(value, "no")
634 || !strcasecmp(value, "off"))
17712991 635 return 0;
8420ccd8
JH
636 return -1;
637}
638
b2be2f6a
JK
639int git_config_maybe_bool(const char *name, const char *value)
640{
9a549d43 641 int v = git_parse_maybe_bool(value);
b2be2f6a
JK
642 if (0 <= v)
643 return v;
42d194e9 644 if (git_parse_int(value, &v))
db6195ef 645 return !!v;
b2be2f6a
JK
646 return -1;
647}
648
8420ccd8
JH
649int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
650{
9a549d43 651 int v = git_parse_maybe_bool(value);
8420ccd8
JH
652 if (0 <= v) {
653 *is_bool = 1;
654 return v;
655 }
a53f2ec6 656 *is_bool = 0;
c35b0b58 657 return git_config_int(name, value);
17712991
LT
658}
659
a53f2ec6
JH
660int git_config_bool(const char *name, const char *value)
661{
662 int discard;
c35b0b58 663 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
664}
665
ea5105a5
CC
666int git_config_string(const char **dest, const char *var, const char *value)
667{
668 if (!value)
669 return config_error_nonbool(var);
670 *dest = xstrdup(value);
671 return 0;
672}
673
395de250
MM
674int git_config_pathname(const char **dest, const char *var, const char *value)
675{
676 if (!value)
677 return config_error_nonbool(var);
678 *dest = expand_user_path(value);
679 if (!*dest)
8262aaa2 680 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
681 return 0;
682}
683
806e2ad7 684static int git_default_core_config(const char *var, const char *value)
17712991
LT
685{
686 /* This needs a better name */
687 if (!strcmp(var, "core.filemode")) {
688 trust_executable_bit = git_config_bool(var, value);
689 return 0;
690 }
1ce4790b
AR
691 if (!strcmp(var, "core.trustctime")) {
692 trust_ctime = git_config_bool(var, value);
693 return 0;
694 }
c1b5d738 695 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
696 if (!strcasecmp(value, "default"))
697 check_stat = 1;
698 else if (!strcasecmp(value, "minimal"))
699 check_stat = 0;
700 }
17712991 701
9378c161
JH
702 if (!strcmp(var, "core.quotepath")) {
703 quote_path_fully = git_config_bool(var, value);
704 return 0;
705 }
706
78a8d641
JS
707 if (!strcmp(var, "core.symlinks")) {
708 has_symlinks = git_config_bool(var, value);
709 return 0;
710 }
711
0a9b88b7
LT
712 if (!strcmp(var, "core.ignorecase")) {
713 ignore_case = git_config_bool(var, value);
714 return 0;
715 }
716
64589a03
JH
717 if (!strcmp(var, "core.attributesfile"))
718 return git_config_pathname(&git_attributes_file, var, value);
719
7d1864ce
JH
720 if (!strcmp(var, "core.bare")) {
721 is_bare_repository_cfg = git_config_bool(var, value);
722 return 0;
723 }
724
5f73076c
JH
725 if (!strcmp(var, "core.ignorestat")) {
726 assume_unchanged = git_config_bool(var, value);
727 return 0;
728 }
729
e388c738
JH
730 if (!strcmp(var, "core.prefersymlinkrefs")) {
731 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
732 return 0;
733 }
734
6de08ae6
SP
735 if (!strcmp(var, "core.logallrefupdates")) {
736 log_all_ref_updates = git_config_bool(var, value);
737 return 0;
738 }
739
2f8acdb3
JH
740 if (!strcmp(var, "core.warnambiguousrefs")) {
741 warn_ambiguous_refs = git_config_bool(var, value);
742 return 0;
743 }
744
a71f09fe 745 if (!strcmp(var, "core.abbrev")) {
dce96489
LT
746 int abbrev = git_config_int(var, value);
747 if (abbrev < minimum_abbrev || abbrev > 40)
748 return -1;
749 default_abbrev = abbrev;
750 return 0;
751 }
752
960ccca6 753 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
754 int level = git_config_int(var, value);
755 if (level == -1)
756 level = Z_DEFAULT_COMPRESSION;
757 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 758 die(_("bad zlib compression level %d"), level);
12f6c308 759 zlib_compression_level = level;
960ccca6
DH
760 zlib_compression_seen = 1;
761 return 0;
762 }
763
764 if (!strcmp(var, "core.compression")) {
765 int level = git_config_int(var, value);
766 if (level == -1)
767 level = Z_DEFAULT_COMPRESSION;
768 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 769 die(_("bad zlib compression level %d"), level);
960ccca6
DH
770 core_compression_level = level;
771 core_compression_seen = 1;
772 if (!zlib_compression_seen)
773 zlib_compression_level = level;
12f6c308
JBH
774 return 0;
775 }
776
60bb8b14 777 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 778 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 779 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
780
781 /* This value must be multiple of (pagesize * 2) */
782 packed_git_window_size /= pgsz_x2;
783 if (packed_git_window_size < 1)
784 packed_git_window_size = 1;
785 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
786 return 0;
787 }
788
15366280 789 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 790 big_file_threshold = git_config_ulong(var, value);
15366280
JH
791 return 0;
792 }
793
77ccc5bb 794 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 795 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
796 return 0;
797 }
798
18bdec11 799 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 800 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
801 return 0;
802 }
803
6c510bee 804 if (!strcmp(var, "core.autocrlf")) {
d7f46334 805 if (value && !strcasecmp(value, "input")) {
ec70f52f 806 if (core_eol == EOL_CRLF)
942e7747 807 return error("core.autocrlf=input conflicts with core.eol=crlf");
fd6cce9e 808 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
809 return 0;
810 }
6c510bee
LT
811 auto_crlf = git_config_bool(var, value);
812 return 0;
813 }
814
21e5ad50
SP
815 if (!strcmp(var, "core.safecrlf")) {
816 if (value && !strcasecmp(value, "warn")) {
817 safe_crlf = SAFE_CRLF_WARN;
818 return 0;
819 }
820 safe_crlf = git_config_bool(var, value);
821 return 0;
822 }
823
942e7747
EB
824 if (!strcmp(var, "core.eol")) {
825 if (value && !strcasecmp(value, "lf"))
ec70f52f 826 core_eol = EOL_LF;
942e7747 827 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 828 core_eol = EOL_CRLF;
942e7747 829 else if (value && !strcasecmp(value, "native"))
ec70f52f 830 core_eol = EOL_NATIVE;
942e7747 831 else
ec70f52f
JH
832 core_eol = EOL_UNSET;
833 if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
942e7747
EB
834 return error("core.autocrlf=input conflicts with core.eol=crlf");
835 return 0;
836 }
837
a97a7468
JS
838 if (!strcmp(var, "core.notesref")) {
839 notes_ref_name = xstrdup(value);
840 return 0;
841 }
842
806e2ad7
LT
843 if (!strcmp(var, "core.pager"))
844 return git_config_string(&pager_program, var, value);
845
846 if (!strcmp(var, "core.editor"))
847 return git_config_string(&editor_program, var, value);
848
eff80a9f 849 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
850 if (!value)
851 return config_error_nonbool(var);
ad524f83 852 else if (!strcasecmp(value, "auto"))
84c9dc2c 853 auto_comment_line_char = 1;
ad524f83 854 else if (value[0] && !value[1]) {
649409b7 855 comment_line_char = value[0];
84c9dc2c 856 auto_comment_line_char = 0;
50b54fd7
NTND
857 } else
858 return error("core.commentChar should only be one character");
859 return 0;
eff80a9f
JH
860 }
861
d3e7da89
AK
862 if (!strcmp(var, "core.askpass"))
863 return git_config_string(&askpass_program, var, value);
864
806e2ad7 865 if (!strcmp(var, "core.excludesfile"))
395de250 866 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
867
868 if (!strcmp(var, "core.whitespace")) {
869 if (!value)
870 return config_error_nonbool(var);
871 whitespace_rule_cfg = parse_whitespace_rule(value);
872 return 0;
873 }
874
aafe9fba
LT
875 if (!strcmp(var, "core.fsyncobjectfiles")) {
876 fsync_object_files = git_config_bool(var, value);
877 return 0;
878 }
879
671c9b7e
LT
880 if (!strcmp(var, "core.preloadindex")) {
881 core_preload_index = git_config_bool(var, value);
882 return 0;
883 }
884
348df166
JS
885 if (!strcmp(var, "core.createobject")) {
886 if (!strcmp(value, "rename"))
887 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
888 else if (!strcmp(value, "link"))
889 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
890 else
8262aaa2 891 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
892 return 0;
893 }
894
08aefc9e
NTND
895 if (!strcmp(var, "core.sparsecheckout")) {
896 core_apply_sparse_checkout = git_config_bool(var, value);
897 return 0;
898 }
899
76759c7d
TB
900 if (!strcmp(var, "core.precomposeunicode")) {
901 precomposed_unicode = git_config_bool(var, value);
902 return 0;
903 }
904
a42643aa
JK
905 if (!strcmp(var, "core.protecthfs")) {
906 protect_hfs = git_config_bool(var, value);
907 return 0;
908 }
909
2b4c6efc
JS
910 if (!strcmp(var, "core.protectntfs")) {
911 protect_ntfs = git_config_bool(var, value);
912 return 0;
76759c7d
TB
913 }
914
806e2ad7
LT
915 /* Add other config variables here and to Documentation/config.txt. */
916 return 0;
917}
918
1141f492 919static int git_default_i18n_config(const char *var, const char *value)
d1364529 920{
ea5105a5
CC
921 if (!strcmp(var, "i18n.commitencoding"))
922 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 923
ea5105a5
CC
924 if (!strcmp(var, "i18n.logoutputencoding"))
925 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 926
1141f492
LT
927 /* Add other config variables here and to Documentation/config.txt. */
928 return 0;
929}
039bc64e 930
1141f492
LT
931static int git_default_branch_config(const char *var, const char *value)
932{
9ed36cfa
JS
933 if (!strcmp(var, "branch.autosetupmerge")) {
934 if (value && !strcasecmp(value, "always")) {
935 git_branch_track = BRANCH_TRACK_ALWAYS;
936 return 0;
937 }
938 git_branch_track = git_config_bool(var, value);
939 return 0;
940 }
c998ae9b
DS
941 if (!strcmp(var, "branch.autosetuprebase")) {
942 if (!value)
943 return config_error_nonbool(var);
944 else if (!strcmp(value, "never"))
945 autorebase = AUTOREBASE_NEVER;
946 else if (!strcmp(value, "local"))
947 autorebase = AUTOREBASE_LOCAL;
948 else if (!strcmp(value, "remote"))
949 autorebase = AUTOREBASE_REMOTE;
950 else if (!strcmp(value, "always"))
951 autorebase = AUTOREBASE_ALWAYS;
952 else
8c3ca351 953 return error("malformed value for %s", var);
c998ae9b
DS
954 return 0;
955 }
a9cc857a 956
1ab661dd 957 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
958 return 0;
959}
960
52153747
FAG
961static int git_default_push_config(const char *var, const char *value)
962{
963 if (!strcmp(var, "push.default")) {
964 if (!value)
965 return config_error_nonbool(var);
966 else if (!strcmp(value, "nothing"))
967 push_default = PUSH_DEFAULT_NOTHING;
968 else if (!strcmp(value, "matching"))
969 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
970 else if (!strcmp(value, "simple"))
971 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
972 else if (!strcmp(value, "upstream"))
973 push_default = PUSH_DEFAULT_UPSTREAM;
974 else if (!strcmp(value, "tracking")) /* deprecated */
975 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
976 else if (!strcmp(value, "current"))
977 push_default = PUSH_DEFAULT_CURRENT;
978 else {
8c3ca351 979 error("malformed value for %s: %s", var, value);
b55e6775
MM
980 return error("Must be one of nothing, matching, simple, "
981 "upstream or current.");
52153747
FAG
982 }
983 return 0;
984 }
985
986 /* Add other config variables here and to Documentation/config.txt. */
987 return 0;
988}
989
d551a488
MSO
990static int git_default_mailmap_config(const char *var, const char *value)
991{
992 if (!strcmp(var, "mailmap.file"))
9352fd57 993 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
994 if (!strcmp(var, "mailmap.blob"))
995 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
996
997 /* Add other config variables here and to Documentation/config.txt. */
998 return 0;
999}
1000
1141f492
LT
1001int git_default_config(const char *var, const char *value, void *dummy)
1002{
59556548 1003 if (starts_with(var, "core."))
1141f492
LT
1004 return git_default_core_config(var, value);
1005
59556548 1006 if (starts_with(var, "user."))
9597921b 1007 return git_ident_config(var, value, dummy);
1141f492 1008
59556548 1009 if (starts_with(var, "i18n."))
1141f492
LT
1010 return git_default_i18n_config(var, value);
1011
59556548 1012 if (starts_with(var, "branch."))
1141f492
LT
1013 return git_default_branch_config(var, value);
1014
59556548 1015 if (starts_with(var, "push."))
52153747
FAG
1016 return git_default_push_config(var, value);
1017
59556548 1018 if (starts_with(var, "mailmap."))
d551a488
MSO
1019 return git_default_mailmap_config(var, value);
1020
59556548 1021 if (starts_with(var, "advice."))
75194438
JK
1022 return git_default_advice_config(var, value);
1023
1141f492
LT
1024 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1025 pager_use_color = git_config_bool(var,value);
1026 return 0;
1027 }
1028
568508e7
JH
1029 if (!strcmp(var, "pack.packsizelimit")) {
1030 pack_size_limit_cfg = git_config_ulong(var, value);
1031 return 0;
1032 }
1141f492
LT
1033 /* Add other config variables here and to Documentation/config.txt. */
1034 return 0;
1035}
1036
ca4b5de2 1037/*
b2dc0945 1038 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1039 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1040 * this function.
1041 */
4d8dd149 1042static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
ca4b5de2
HV
1043{
1044 int ret;
1045
1046 /* push config-file parsing state stack */
1047 top->prev = cf;
1048 top->linenr = 1;
1049 top->eof = 0;
1050 strbuf_init(&top->value, 1024);
1051 strbuf_init(&top->var, 1024);
1052 cf = top;
1053
4d8dd149 1054 ret = git_parse_source(fn, data);
ca4b5de2
HV
1055
1056 /* pop config-file parsing state stack */
1057 strbuf_release(&top->value);
1058 strbuf_release(&top->var);
1059 cf = top->prev;
1060
1061 return ret;
1062}
1063
3caec73b 1064static int do_config_from_file(config_fn_t fn,
473166b9
LS
1065 const char *origin_type, const char *name, const char *path, FILE *f,
1066 void *data)
17712991 1067{
3caec73b 1068 struct config_source top;
17712991 1069
3caec73b 1070 top.u.file = f;
473166b9 1071 top.origin_type = origin_type;
3caec73b
KS
1072 top.name = name;
1073 top.path = path;
1074 top.die_on_error = 1;
1075 top.do_fgetc = config_file_fgetc;
1076 top.do_ungetc = config_file_ungetc;
1077 top.do_ftell = config_file_ftell;
924aaf3e 1078
3caec73b
KS
1079 return do_config_from(&top, fn, data);
1080}
924aaf3e 1081
3caec73b
KS
1082static int git_config_from_stdin(config_fn_t fn, void *data)
1083{
473166b9 1084 return do_config_from_file(fn, "standard input", "", NULL, stdin, data);
3caec73b
KS
1085}
1086
1087int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1088{
1089 int ret = -1;
1090 FILE *f;
924aaf3e 1091
3caec73b
KS
1092 f = fopen(filename, "r");
1093 if (f) {
260d408e 1094 flockfile(f);
473166b9 1095 ret = do_config_from_file(fn, "file", filename, filename, f, data);
260d408e 1096 funlockfile(f);
17712991
LT
1097 fclose(f);
1098 }
1099 return ret;
1100}
10bea152 1101
473166b9
LS
1102int git_config_from_mem(config_fn_t fn, const char *origin_type,
1103 const char *name, const char *buf, size_t len, void *data)
1bc88819
HV
1104{
1105 struct config_source top;
1106
1107 top.u.buf.buf = buf;
1108 top.u.buf.len = len;
1109 top.u.buf.pos = 0;
473166b9 1110 top.origin_type = origin_type;
1bc88819 1111 top.name = name;
d14d4244 1112 top.path = NULL;
b2dc0945 1113 top.die_on_error = 0;
49d6cfa5
JK
1114 top.do_fgetc = config_buf_fgetc;
1115 top.do_ungetc = config_buf_ungetc;
1116 top.do_ftell = config_buf_ftell;
1bc88819
HV
1117
1118 return do_config_from(&top, fn, data);
1119}
1120
1121static int git_config_from_blob_sha1(config_fn_t fn,
1122 const char *name,
1123 const unsigned char *sha1,
1124 void *data)
1125{
1126 enum object_type type;
1127 char *buf;
1128 unsigned long size;
1129 int ret;
1130
1131 buf = read_sha1_file(sha1, &type, &size);
1132 if (!buf)
1133 return error("unable to load config blob object '%s'", name);
1134 if (type != OBJ_BLOB) {
1135 free(buf);
1136 return error("reference '%s' does not point to a blob", name);
1137 }
1138
473166b9 1139 ret = git_config_from_mem(fn, "blob", name, buf, size, data);
1bc88819
HV
1140 free(buf);
1141
1142 return ret;
1143}
1144
1145static int git_config_from_blob_ref(config_fn_t fn,
1146 const char *name,
1147 void *data)
1148{
1149 unsigned char sha1[20];
1150
1151 if (get_sha1(name, sha1) < 0)
1152 return error("unable to resolve config blob '%s'", name);
1153 return git_config_from_blob_sha1(fn, name, sha1, data);
1154}
1155
506b17b1
JS
1156const char *git_etc_gitconfig(void)
1157{
7f0e39fa 1158 static const char *system_wide;
2de9de5e
SP
1159 if (!system_wide)
1160 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1161 return system_wide;
506b17b1
JS
1162}
1163
23b0c478
SP
1164/*
1165 * Parse environment variable 'k' as a boolean (in various
1166 * possible spellings); if missing, use the default value 'def'.
1167 */
0ef37164 1168int git_env_bool(const char *k, int def)
ab88c363
JK
1169{
1170 const char *v = getenv(k);
1171 return v ? git_config_bool(k, v) : def;
1172}
1173
23b0c478
SP
1174/*
1175 * Parse environment variable 'k' as ulong with possibly a unit
1176 * suffix; if missing, use the default value 'val'.
1177 */
1178unsigned long git_env_ulong(const char *k, unsigned long val)
1179{
1180 const char *v = getenv(k);
1181 if (v && !git_parse_ulong(v, &val))
1182 die("failed to parse %s", k);
1183 return val;
1184}
1185
ab88c363
JK
1186int git_config_system(void)
1187{
1188 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1189}
1190
dbdf5854 1191int git_config_early(config_fn_t fn, void *data, const char *repo_config)
4f629539 1192{
aa387407 1193 int ret = 0, found = 0;
509adc33
PT
1194 char *xdg_config = xdg_config_home("config");
1195 char *user_config = expand_user_path("~/.gitconfig");
5f1a63e0 1196
4698c8fe 1197 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0)) {
dc871831
DB
1198 ret += git_config_from_file(fn, git_etc_gitconfig(),
1199 data);
aa387407
FC
1200 found += 1;
1201 }
5f1a63e0 1202
4698c8fe 1203 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK)) {
21cf3227
HKNN
1204 ret += git_config_from_file(fn, xdg_config, data);
1205 found += 1;
1206 }
1207
4698c8fe 1208 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK)) {
21cf3227
HKNN
1209 ret += git_config_from_file(fn, user_config, data);
1210 found += 1;
5f1a63e0
JS
1211 }
1212
4698c8fe 1213 if (repo_config && !access_or_die(repo_config, R_OK, 0)) {
aa387407
FC
1214 ret += git_config_from_file(fn, repo_config, data);
1215 found += 1;
1216 }
8b1fa778 1217
5a0c9eeb
JK
1218 switch (git_config_from_parameters(fn, data)) {
1219 case -1: /* error */
8262aaa2 1220 die(_("unable to parse command-line config"));
5a0c9eeb
JK
1221 break;
1222 case 0: /* found nothing */
1223 break;
1224 default: /* found at least one item */
1225 found++;
1226 break;
1227 }
8b1fa778 1228
21cf3227
HKNN
1229 free(xdg_config);
1230 free(user_config);
1f2baa78 1231 return ret == 0 ? found : ret;
4f629539
JH
1232}
1233
c9b5e2a5 1234int git_config_with_options(config_fn_t fn, void *data,
c8985ce0 1235 struct git_config_source *config_source,
1bc88819 1236 int respect_includes)
dbdf5854
NTND
1237{
1238 char *repo_config = NULL;
1239 int ret;
9b25a0b5
JK
1240 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1241
1242 if (respect_includes) {
1243 inc.fn = fn;
1244 inc.data = data;
1245 fn = git_config_include;
1246 data = &inc;
1247 }
dbdf5854 1248
c9b5e2a5
JK
1249 /*
1250 * If we have a specific filename, use it. Otherwise, follow the
1251 * regular lookup sequence.
1252 */
3caec73b
KS
1253 if (config_source && config_source->use_stdin)
1254 return git_config_from_stdin(fn, data);
1255 else if (config_source && config_source->file)
c8985ce0
KS
1256 return git_config_from_file(fn, config_source->file, data);
1257 else if (config_source && config_source->blob)
1258 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1259
dbdf5854
NTND
1260 repo_config = git_pathdup("config");
1261 ret = git_config_early(fn, data, repo_config);
1262 if (repo_config)
1263 free(repo_config);
1264 return ret;
1265}
1266
155ef25f 1267static void git_config_raw(config_fn_t fn, void *data)
c9b5e2a5 1268{
aace4385
TA
1269 if (git_config_with_options(fn, data, NULL, 1) < 0)
1270 /*
1271 * git_config_with_options() normally returns only
1272 * positive values, as most errors are fatal, and
1273 * non-fatal potential errors are guarded by "if"
1274 * statements that are entered only when no error is
1275 * possible.
1276 *
1277 * If we ever encounter a non-fatal error, it means
1278 * something went really wrong and we should stop
1279 * immediately.
1280 */
1281 die(_("unknown error occured while reading the configuration files"));
c9b5e2a5
JK
1282}
1283
155ef25f 1284static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1285{
155ef25f
TA
1286 int i, value_index;
1287 struct string_list *values;
1288 struct config_set_element *entry;
1289 struct configset_list *list = &cs->list;
1290 struct key_value_info *kv_info;
1291
1292 for (i = 0; i < list->nr; i++) {
1293 entry = list->items[i].e;
1294 value_index = list->items[i].value_index;
1295 values = &entry->value_list;
1296 if (fn(entry->key, values->items[value_index].string, data) < 0) {
1297 kv_info = values->items[value_index].util;
1298 git_die_config_linenr(entry->key, kv_info->filename, kv_info->linenr);
1299 }
1300 }
1301}
1302
1303static void git_config_check_init(void);
1304
1305void git_config(config_fn_t fn, void *data)
1306{
1307 git_config_check_init();
1308 configset_iter(&the_config_set, fn, data);
c9b5e2a5
JK
1309}
1310
3c8687a7
TA
1311static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1312{
1313 struct config_set_element k;
1314 struct config_set_element *found_entry;
1315 char *normalized_key;
1316 int ret;
1317 /*
1318 * `key` may come from the user, so normalize it before using it
1319 * for querying entries from the hashmap.
1320 */
1321 ret = git_config_parse_key(key, &normalized_key, NULL);
1322
1323 if (ret)
1324 return NULL;
1325
1326 hashmap_entry_init(&k, strhash(normalized_key));
1327 k.key = normalized_key;
1328 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1329 free(normalized_key);
1330 return found_entry;
1331}
1332
1333static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1334{
1335 struct config_set_element *e;
3df8fd62 1336 struct string_list_item *si;
155ef25f 1337 struct configset_list_item *l_item;
3df8fd62
TA
1338 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1339
3c8687a7
TA
1340 e = configset_find_element(cs, key);
1341 /*
1342 * Since the keys are being fed by git_config*() callback mechanism, they
1343 * are already normalized. So simply add them without any further munging.
1344 */
1345 if (!e) {
1346 e = xmalloc(sizeof(*e));
1347 hashmap_entry_init(e, strhash(key));
1348 e->key = xstrdup(key);
1349 string_list_init(&e->value_list, 1);
1350 hashmap_add(&cs->config_hash, e);
1351 }
8c53f071 1352 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1353
1354 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1355 l_item = &cs->list.items[cs->list.nr++];
1356 l_item->e = e;
1357 l_item->value_index = e->value_list.nr - 1;
1358
3df8fd62
TA
1359 if (cf) {
1360 kv_info->filename = strintern(cf->name);
1361 kv_info->linenr = cf->linenr;
1362 } else {
1363 /* for values read from `git_config_from_parameters()` */
1364 kv_info->filename = NULL;
1365 kv_info->linenr = -1;
1366 }
1367 si->util = kv_info;
3c8687a7
TA
1368
1369 return 0;
1370}
1371
1372static int config_set_element_cmp(const struct config_set_element *e1,
1373 const struct config_set_element *e2, const void *unused)
1374{
1375 return strcmp(e1->key, e2->key);
1376}
1377
1378void git_configset_init(struct config_set *cs)
1379{
1380 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1381 cs->hash_initialized = 1;
155ef25f
TA
1382 cs->list.nr = 0;
1383 cs->list.alloc = 0;
1384 cs->list.items = NULL;
3c8687a7
TA
1385}
1386
1387void git_configset_clear(struct config_set *cs)
1388{
1389 struct config_set_element *entry;
1390 struct hashmap_iter iter;
1391 if (!cs->hash_initialized)
1392 return;
1393
1394 hashmap_iter_init(&cs->config_hash, &iter);
1395 while ((entry = hashmap_iter_next(&iter))) {
1396 free(entry->key);
3df8fd62 1397 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1398 }
1399 hashmap_free(&cs->config_hash, 1);
1400 cs->hash_initialized = 0;
155ef25f
TA
1401 free(cs->list.items);
1402 cs->list.nr = 0;
1403 cs->list.alloc = 0;
1404 cs->list.items = NULL;
3c8687a7
TA
1405}
1406
1407static int config_set_callback(const char *key, const char *value, void *cb)
1408{
1409 struct config_set *cs = cb;
1410 configset_add_value(cs, key, value);
1411 return 0;
1412}
1413
1414int git_configset_add_file(struct config_set *cs, const char *filename)
1415{
1416 return git_config_from_file(config_set_callback, filename, cs);
1417}
1418
1419int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1420{
1421 const struct string_list *values = NULL;
1422 /*
1423 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1424 * queried key in the files of the configset, the value returned will be the last
1425 * value in the value list for that key.
1426 */
1427 values = git_configset_get_value_multi(cs, key);
1428
1429 if (!values)
1430 return 1;
1431 assert(values->nr > 0);
1432 *value = values->items[values->nr - 1].string;
1433 return 0;
1434}
1435
1436const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1437{
1438 struct config_set_element *e = configset_find_element(cs, key);
1439 return e ? &e->value_list : NULL;
1440}
1441
1442int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1443{
1444 const char *value;
1445 if (!git_configset_get_value(cs, key, &value))
1446 return git_config_string(dest, key, value);
1447 else
1448 return 1;
1449}
1450
1451int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1452{
1453 return git_configset_get_string_const(cs, key, (const char **)dest);
1454}
1455
1456int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1457{
1458 const char *value;
1459 if (!git_configset_get_value(cs, key, &value)) {
1460 *dest = git_config_int(key, value);
1461 return 0;
1462 } else
1463 return 1;
1464}
1465
1466int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1467{
1468 const char *value;
1469 if (!git_configset_get_value(cs, key, &value)) {
1470 *dest = git_config_ulong(key, value);
1471 return 0;
1472 } else
1473 return 1;
1474}
1475
1476int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1477{
1478 const char *value;
1479 if (!git_configset_get_value(cs, key, &value)) {
1480 *dest = git_config_bool(key, value);
1481 return 0;
1482 } else
1483 return 1;
1484}
1485
1486int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1487 int *is_bool, int *dest)
1488{
1489 const char *value;
1490 if (!git_configset_get_value(cs, key, &value)) {
1491 *dest = git_config_bool_or_int(key, value, is_bool);
1492 return 0;
1493 } else
1494 return 1;
1495}
1496
1497int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1498{
1499 const char *value;
1500 if (!git_configset_get_value(cs, key, &value)) {
1501 *dest = git_config_maybe_bool(key, value);
1502 if (*dest == -1)
1503 return -1;
1504 return 0;
1505 } else
1506 return 1;
1507}
1508
1509int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1510{
1511 const char *value;
1512 if (!git_configset_get_value(cs, key, &value))
1513 return git_config_pathname(dest, key, value);
1514 else
1515 return 1;
1516}
1517
1518static void git_config_check_init(void)
1519{
1520 if (the_config_set.hash_initialized)
1521 return;
1522 git_configset_init(&the_config_set);
155ef25f 1523 git_config_raw(config_set_callback, &the_config_set);
3c8687a7
TA
1524}
1525
1526void git_config_clear(void)
1527{
1528 if (!the_config_set.hash_initialized)
1529 return;
1530 git_configset_clear(&the_config_set);
1531}
1532
1533int git_config_get_value(const char *key, const char **value)
1534{
1535 git_config_check_init();
1536 return git_configset_get_value(&the_config_set, key, value);
1537}
1538
1539const struct string_list *git_config_get_value_multi(const char *key)
1540{
1541 git_config_check_init();
1542 return git_configset_get_value_multi(&the_config_set, key);
1543}
1544
1545int git_config_get_string_const(const char *key, const char **dest)
1546{
5a80e97c 1547 int ret;
3c8687a7 1548 git_config_check_init();
5a80e97c
TA
1549 ret = git_configset_get_string_const(&the_config_set, key, dest);
1550 if (ret < 0)
1551 git_die_config(key, NULL);
1552 return ret;
3c8687a7
TA
1553}
1554
1555int git_config_get_string(const char *key, char **dest)
1556{
1557 git_config_check_init();
1558 return git_config_get_string_const(key, (const char **)dest);
1559}
1560
1561int git_config_get_int(const char *key, int *dest)
1562{
1563 git_config_check_init();
1564 return git_configset_get_int(&the_config_set, key, dest);
1565}
1566
1567int git_config_get_ulong(const char *key, unsigned long *dest)
1568{
1569 git_config_check_init();
1570 return git_configset_get_ulong(&the_config_set, key, dest);
1571}
1572
1573int git_config_get_bool(const char *key, int *dest)
1574{
1575 git_config_check_init();
1576 return git_configset_get_bool(&the_config_set, key, dest);
1577}
1578
1579int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1580{
1581 git_config_check_init();
1582 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1583}
1584
1585int git_config_get_maybe_bool(const char *key, int *dest)
1586{
1587 git_config_check_init();
1588 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1589}
1590
1591int git_config_get_pathname(const char *key, const char **dest)
1592{
5a80e97c 1593 int ret;
3c8687a7 1594 git_config_check_init();
5a80e97c
TA
1595 ret = git_configset_get_pathname(&the_config_set, key, dest);
1596 if (ret < 0)
1597 git_die_config(key, NULL);
1598 return ret;
1599}
1600
435ec090
CC
1601int git_config_get_untracked_cache(void)
1602{
1603 int val = -1;
1604 const char *v;
1605
dae6c322
CC
1606 /* Hack for test programs like test-dump-untracked-cache */
1607 if (ignore_untracked_cache_config)
1608 return -1;
1609
435ec090
CC
1610 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
1611 return val;
1612
1613 if (!git_config_get_value("core.untrackedcache", &v)) {
1614 if (!strcasecmp(v, "keep"))
1615 return -1;
1616
1617 error("unknown core.untrackedCache value '%s'; "
1618 "using 'keep' default value", v);
1619 return -1;
1620 }
1621
1622 return -1; /* default value */
1623}
1624
5a80e97c
TA
1625NORETURN
1626void git_die_config_linenr(const char *key, const char *filename, int linenr)
1627{
1628 if (!filename)
1629 die(_("unable to parse '%s' from command-line config"), key);
1630 else
1631 die(_("bad config variable '%s' in file '%s' at line %d"),
1632 key, filename, linenr);
1633}
1634
1635NORETURN __attribute__((format(printf, 2, 3)))
1636void git_die_config(const char *key, const char *err, ...)
1637{
1638 const struct string_list *values;
1639 struct key_value_info *kv_info;
1640
1641 if (err) {
1642 va_list params;
1643 va_start(params, err);
1644 vreportf("error: ", err, params);
1645 va_end(params);
1646 }
1647 values = git_config_get_value_multi(key);
1648 kv_info = values->items[values->nr - 1].util;
1649 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
1650}
1651
10bea152
JS
1652/*
1653 * Find all the stuff for git_config_set() below.
1654 */
4ddba79d 1655
10bea152
JS
1656static struct {
1657 int baselen;
4b25d091 1658 char *key;
f98d863d 1659 int do_not_match;
4b25d091 1660 regex_t *value_regex;
4ddba79d 1661 int multi_replace;
83786fa4
TR
1662 size_t *offset;
1663 unsigned int offset_alloc;
10bea152
JS
1664 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
1665 int seen;
1666} store;
1667
4b25d091 1668static int matches(const char *key, const char *value)
f98d863d 1669{
c1063be2
JK
1670 if (strcmp(key, store.key))
1671 return 0; /* not ours */
1672 if (!store.value_regex)
1673 return 1; /* always matches */
1674 if (store.value_regex == CONFIG_REGEX_NONE)
1675 return 0; /* never matches */
1676
1677 return store.do_not_match ^
1678 (value && !regexec(store.value_regex, value, 0, NULL, 0));
f98d863d
JS
1679}
1680
4b25d091 1681static int store_aux(const char *key, const char *value, void *cb)
10bea152 1682{
ae9ee41d
JH
1683 const char *ep;
1684 size_t section_len;
1685
10bea152
JS
1686 switch (store.state) {
1687 case KEY_SEEN:
f98d863d 1688 if (matches(key, value)) {
4ddba79d 1689 if (store.seen == 1 && store.multi_replace == 0) {
8262aaa2 1690 warning(_("%s has multiple values"), key);
10bea152 1691 }
4ddba79d 1692
83786fa4
TR
1693 ALLOC_GROW(store.offset, store.seen + 1,
1694 store.offset_alloc);
1695
49d6cfa5 1696 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
1697 store.seen++;
1698 }
1699 break;
1700 case SECTION_SEEN:
ae9ee41d
JH
1701 /*
1702 * What we are looking for is in store.key (both
1703 * section and var), and its section part is baselen
1704 * long. We found key (again, both section and var).
1705 * We would want to know if this key is in the same
1706 * section as what we are looking for. We already
1707 * know we are in the same section as what should
1708 * hold store.key.
1709 */
1710 ep = strrchr(key, '.');
1711 section_len = ep - key;
1712
1713 if ((section_len != store.baselen) ||
1714 memcmp(key, store.key, section_len+1)) {
10bea152
JS
1715 store.state = SECTION_END_SEEN;
1716 break;
ae9ee41d
JH
1717 }
1718
1719 /*
1720 * Do not increment matches: this is no match, but we
1721 * just made sure we are in the desired section.
1722 */
83786fa4
TR
1723 ALLOC_GROW(store.offset, store.seen + 1,
1724 store.offset_alloc);
49d6cfa5 1725 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
1726 /* fallthru */
1727 case SECTION_END_SEEN:
1728 case START:
f98d863d 1729 if (matches(key, value)) {
83786fa4
TR
1730 ALLOC_GROW(store.offset, store.seen + 1,
1731 store.offset_alloc);
49d6cfa5 1732 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
1733 store.state = KEY_SEEN;
1734 store.seen++;
d14f7764
LT
1735 } else {
1736 if (strrchr(key, '.') - key == store.baselen &&
bdf0ef08 1737 !strncmp(key, store.key, store.baselen)) {
93ddef3e 1738 store.state = SECTION_SEEN;
83786fa4
TR
1739 ALLOC_GROW(store.offset,
1740 store.seen + 1,
1741 store.offset_alloc);
49d6cfa5 1742 store.offset[store.seen] = cf->do_ftell(cf);
d14f7764 1743 }
bdf0ef08 1744 }
10bea152
JS
1745 }
1746 return 0;
1747}
1748
64c0d71c 1749static int write_error(const char *filename)
480c9e52 1750{
64c0d71c 1751 error("failed to write new configuration file %s", filename);
480c9e52
AW
1752
1753 /* Same error code as "failed to rename". */
1754 return 4;
1755}
1756
4b25d091 1757static int store_write_section(int fd, const char *key)
10bea152 1758{
cb891a59
KH
1759 const char *dot;
1760 int i, success;
f285a2d7 1761 struct strbuf sb = STRBUF_INIT;
d14f7764 1762
cb891a59 1763 dot = memchr(key, '.', store.baselen);
d14f7764 1764 if (dot) {
cb891a59
KH
1765 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1766 for (i = dot - key + 1; i < store.baselen; i++) {
e5c349ba 1767 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
1768 strbuf_addch(&sb, '\\');
1769 strbuf_addch(&sb, key[i]);
d14f7764 1770 }
cb891a59
KH
1771 strbuf_addstr(&sb, "\"]\n");
1772 } else {
1773 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
d14f7764
LT
1774 }
1775
cb891a59
KH
1776 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1777 strbuf_release(&sb);
480c9e52 1778
cb891a59 1779 return success;
10bea152
JS
1780}
1781
4b25d091 1782static int store_write_pair(int fd, const char *key, const char *value)
10bea152 1783{
cb891a59
KH
1784 int i, success;
1785 int length = strlen(key + store.baselen + 1);
1786 const char *quote = "";
f285a2d7 1787 struct strbuf sb = STRBUF_INIT;
cdd4fb15 1788
6281f394
JM
1789 /*
1790 * Check to see if the value needs to be surrounded with a dq pair.
1791 * Note that problematic characters are always backslash-quoted; this
1792 * check is about not losing leading or trailing SP and strings that
1793 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1794 * configuration parser.
1795 */
cdd4fb15 1796 if (value[0] == ' ')
cb891a59 1797 quote = "\"";
cdd4fb15
BG
1798 for (i = 0; value[i]; i++)
1799 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
1800 quote = "\"";
1801 if (i && value[i - 1] == ' ')
1802 quote = "\"";
1803
cb891a59
KH
1804 strbuf_addf(&sb, "\t%.*s = %s",
1805 length, key + store.baselen + 1, quote);
10bea152 1806
10bea152
JS
1807 for (i = 0; value[i]; i++)
1808 switch (value[i]) {
480c9e52 1809 case '\n':
cb891a59 1810 strbuf_addstr(&sb, "\\n");
480c9e52
AW
1811 break;
1812 case '\t':
cb891a59 1813 strbuf_addstr(&sb, "\\t");
480c9e52
AW
1814 break;
1815 case '"':
1816 case '\\':
cb891a59 1817 strbuf_addch(&sb, '\\');
480c9e52 1818 default:
cb891a59 1819 strbuf_addch(&sb, value[i]);
480c9e52
AW
1820 break;
1821 }
cb891a59
KH
1822 strbuf_addf(&sb, "%s\n", quote);
1823
1824 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1825 strbuf_release(&sb);
1826
1827 return success;
10bea152
JS
1828}
1829
4b25d091
FC
1830static ssize_t find_beginning_of_line(const char *contents, size_t size,
1831 size_t offset_, int *found_bracket)
4ddba79d 1832{
dc49cd76
SP
1833 size_t equal_offset = size, bracket_offset = size;
1834 ssize_t offset;
4ddba79d 1835
7a31cc0f 1836contline:
a6080a0a 1837 for (offset = offset_-2; offset > 0
4ddba79d
JS
1838 && contents[offset] != '\n'; offset--)
1839 switch (contents[offset]) {
1840 case '=': equal_offset = offset; break;
1841 case ']': bracket_offset = offset; break;
1842 }
7a31cc0f
FL
1843 if (offset > 0 && contents[offset-1] == '\\') {
1844 offset_ = offset;
1845 goto contline;
1846 }
4ddba79d
JS
1847 if (bracket_offset < equal_offset) {
1848 *found_bracket = 1;
1849 offset = bracket_offset+1;
1850 } else
1851 offset++;
1852
1853 return offset;
1854}
1855
30598ad0
PS
1856int git_config_set_in_file_gently(const char *config_filename,
1857 const char *key, const char *value)
5ec31182 1858{
30598ad0 1859 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
1860}
1861
3d180648
PS
1862void git_config_set_in_file(const char *config_filename,
1863 const char *key, const char *value)
10bea152 1864{
3d180648 1865 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
1866}
1867
30598ad0 1868int git_config_set_gently(const char *key, const char *value)
10bea152 1869{
30598ad0 1870 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
1871}
1872
3d180648 1873void git_config_set(const char *key, const char *value)
b4c8aba6 1874{
3d180648 1875 git_config_set_multivar(key, value, NULL, 0);
10bea152
JS
1876}
1877
b09c53a3
LP
1878/*
1879 * Auxiliary function to sanity-check and split the key into the section
1880 * identifier and variable name.
1881 *
1882 * Returns 0 on success, -1 when there is an invalid character in the key and
1883 * -2 if there is no section name in the key.
1884 *
1885 * store_key - pointer to char* which will hold a copy of the key with
1886 * lowercase section and variable name
1887 * baselen - pointer to int which will hold the length of the
1888 * section + subsection part, can be NULL
1889 */
9e9de18f 1890static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
b09c53a3
LP
1891{
1892 int i, dot, baselen;
1893 const char *last_dot = strrchr(key, '.');
1894
1895 /*
1896 * Since "key" actually contains the section name and the real
1897 * key name separated by a dot, we have to know where the dot is.
1898 */
1899
2169ddc0 1900 if (last_dot == NULL || last_dot == key) {
9e9de18f
JK
1901 if (!quiet)
1902 error("key does not contain a section: %s", key);
7a397419 1903 return -CONFIG_NO_SECTION_OR_NAME;
b09c53a3
LP
1904 }
1905
2169ddc0 1906 if (!last_dot[1]) {
9e9de18f
JK
1907 if (!quiet)
1908 error("key does not contain variable name: %s", key);
7a397419 1909 return -CONFIG_NO_SECTION_OR_NAME;
2169ddc0
LP
1910 }
1911
b09c53a3
LP
1912 baselen = last_dot - key;
1913 if (baselen_)
1914 *baselen_ = baselen;
1915
1916 /*
1917 * Validate the key and while at it, lower case it for matching.
1918 */
9e9de18f 1919 if (store_key)
3733e694 1920 *store_key = xmallocz(strlen(key));
b09c53a3
LP
1921
1922 dot = 0;
1923 for (i = 0; key[i]; i++) {
1924 unsigned char c = key[i];
1925 if (c == '.')
1926 dot = 1;
1927 /* Leave the extended basename untouched.. */
1928 if (!dot || i > baselen) {
1929 if (!iskeychar(c) ||
1930 (i == baselen + 1 && !isalpha(c))) {
9e9de18f
JK
1931 if (!quiet)
1932 error("invalid key: %s", key);
b09c53a3
LP
1933 goto out_free_ret_1;
1934 }
1935 c = tolower(c);
1936 } else if (c == '\n') {
9e9de18f
JK
1937 if (!quiet)
1938 error("invalid key (newline): %s", key);
b09c53a3
LP
1939 goto out_free_ret_1;
1940 }
9e9de18f
JK
1941 if (store_key)
1942 (*store_key)[i] = c;
b09c53a3 1943 }
b09c53a3
LP
1944
1945 return 0;
1946
1947out_free_ret_1:
9e9de18f
JK
1948 if (store_key) {
1949 free(*store_key);
1950 *store_key = NULL;
1951 }
7a397419 1952 return -CONFIG_INVALID_KEY;
b09c53a3
LP
1953}
1954
9e9de18f
JK
1955int git_config_parse_key(const char *key, char **store_key, int *baselen)
1956{
1957 return git_config_parse_key_1(key, store_key, baselen, 0);
1958}
1959
1960int git_config_key_is_valid(const char *key)
1961{
1962 return !git_config_parse_key_1(key, NULL, NULL, 1);
1963}
1964
10bea152
JS
1965/*
1966 * If value==NULL, unset in (remove from) config,
1967 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
1968 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
1969 * (only add a new one)
4ddba79d
JS
1970 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1971 * else all matching key/values (regardless how many) are removed,
1972 * before the new pair is written.
10bea152
JS
1973 *
1974 * Returns 0 on success.
1975 *
1976 * This function does this:
1977 *
1978 * - it locks the config file by creating ".git/config.lock"
1979 *
1980 * - it then parses the config using store_aux() as validator to find
1981 * the position on the key/value pair to replace. If it is to be unset,
1982 * it must be found exactly once.
1983 *
1984 * - the config file is mmap()ed and the part before the match (if any) is
1985 * written to the lock file, then the changed part and the rest.
1986 *
1987 * - the config file is removed and the lock file rename()d to it.
1988 *
1989 */
30598ad0
PS
1990int git_config_set_multivar_in_file_gently(const char *config_filename,
1991 const char *key, const char *value,
1992 const char *value_regex,
1993 int multi_replace)
10bea152 1994{
54d160ec 1995 int fd = -1, in_fd = -1;
dafc88b1 1996 int ret;
6cbf973c 1997 struct lock_file *lock = NULL;
0a5f5759 1998 char *filename_buf = NULL;
3a1b3126
JK
1999 char *contents = NULL;
2000 size_t contents_sz;
4ddba79d 2001
b09c53a3
LP
2002 /* parse-key returns negative; flip the sign to feed exit(3) */
2003 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2004 if (ret)
dafc88b1 2005 goto out_free;
b17e659d
JS
2006
2007 store.multi_replace = multi_replace;
10bea152 2008
0a5f5759
JK
2009 if (!config_filename)
2010 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2011
2012 /*
6cbf973c 2013 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2014 * contents of .git/config will be written into it.
2015 */
f1064f6b 2016 lock = xcalloc(1, sizeof(struct lock_file));
6cbf973c
BS
2017 fd = hold_lock_file_for_update(lock, config_filename, 0);
2018 if (fd < 0) {
6ffd567b 2019 error("could not lock config file %s: %s", config_filename, strerror(errno));
10bea152 2020 free(store.key);
7a397419 2021 ret = CONFIG_NO_LOCK;
dafc88b1 2022 goto out_free;
10bea152
JS
2023 }
2024
2025 /*
2026 * If .git/config does not exist yet, write a minimal version.
2027 */
88fb958b
AR
2028 in_fd = open(config_filename, O_RDONLY);
2029 if ( in_fd < 0 ) {
10bea152
JS
2030 free(store.key);
2031
88fb958b
AR
2032 if ( ENOENT != errno ) {
2033 error("opening %s: %s", config_filename,
2034 strerror(errno));
7a397419 2035 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2036 goto out_free;
88fb958b 2037 }
10bea152
JS
2038 /* if nothing to unset, error out */
2039 if (value == NULL) {
7a397419 2040 ret = CONFIG_NOTHING_SET;
dafc88b1 2041 goto out_free;
10bea152
JS
2042 }
2043
4b25d091 2044 store.key = (char *)key;
480c9e52 2045 if (!store_write_section(fd, key) ||
93c1e079
JH
2046 !store_write_pair(fd, key, value))
2047 goto write_err_out;
2048 } else {
88fb958b 2049 struct stat st;
3a1b3126 2050 size_t copy_begin, copy_end;
dc49cd76 2051 int i, new_line = 0;
10bea152
JS
2052
2053 if (value_regex == NULL)
2054 store.value_regex = NULL;
c1063be2
JK
2055 else if (value_regex == CONFIG_REGEX_NONE)
2056 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2057 else {
f98d863d
JS
2058 if (value_regex[0] == '!') {
2059 store.do_not_match = 1;
2060 value_regex++;
2061 } else
2062 store.do_not_match = 0;
2063
2d7320d0 2064 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2065 if (regcomp(store.value_regex, value_regex,
2066 REG_EXTENDED)) {
64c0d71c 2067 error("invalid pattern: %s", value_regex);
10bea152 2068 free(store.value_regex);
7a397419 2069 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2070 goto out_free;
10bea152
JS
2071 }
2072 }
2073
83786fa4 2074 ALLOC_GROW(store.offset, 1, store.offset_alloc);
4ddba79d 2075 store.offset[0] = 0;
10bea152
JS
2076 store.state = START;
2077 store.seen = 0;
2078
2079 /*
2080 * After this, store.offset will contain the *end* offset
2081 * of the last match, or remain at 0 if no match was found.
2082 * As a side effect, we make sure to transform only a valid
2083 * existing config file.
2084 */
ef90d6d4 2085 if (git_config_from_file(store_aux, config_filename, NULL)) {
64c0d71c 2086 error("invalid config file %s", config_filename);
10bea152 2087 free(store.key);
c1063be2
JK
2088 if (store.value_regex != NULL &&
2089 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2090 regfree(store.value_regex);
2091 free(store.value_regex);
2092 }
7a397419 2093 ret = CONFIG_INVALID_FILE;
dafc88b1 2094 goto out_free;
10bea152
JS
2095 }
2096
2097 free(store.key);
c1063be2
JK
2098 if (store.value_regex != NULL &&
2099 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2100 regfree(store.value_regex);
2101 free(store.value_regex);
2102 }
2103
4ddba79d
JS
2104 /* if nothing to unset, or too many matches, error out */
2105 if ((store.seen == 0 && value == NULL) ||
2106 (store.seen > 1 && multi_replace == 0)) {
7a397419 2107 ret = CONFIG_NOTHING_SET;
dafc88b1 2108 goto out_free;
10bea152
JS
2109 }
2110
88fb958b 2111 fstat(in_fd, &st);
dc49cd76 2112 contents_sz = xsize_t(st.st_size);
1570856b
JK
2113 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2114 MAP_PRIVATE, in_fd, 0);
2115 if (contents == MAP_FAILED) {
0e8771f1
JK
2116 if (errno == ENODEV && S_ISDIR(st.st_mode))
2117 errno = EISDIR;
1570856b
JK
2118 error("unable to mmap '%s': %s",
2119 config_filename, strerror(errno));
2120 ret = CONFIG_INVALID_FILE;
2121 contents = NULL;
2122 goto out_free;
2123 }
10bea152 2124 close(in_fd);
54d160ec 2125 in_fd = -1;
10bea152 2126
b4fb09e4 2127 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2569d239 2128 error("chmod on %s failed: %s",
b4fb09e4 2129 get_lock_file_path(lock), strerror(errno));
daa22c6f
EW
2130 ret = CONFIG_NO_WRITE;
2131 goto out_free;
2132 }
2133
4ddba79d
JS
2134 if (store.seen == 0)
2135 store.seen = 1;
2136
2137 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2138 if (store.offset[i] == 0) {
dc49cd76 2139 store.offset[i] = copy_end = contents_sz;
4ddba79d
JS
2140 } else if (store.state != KEY_SEEN) {
2141 copy_end = store.offset[i];
10bea152 2142 } else
4ddba79d 2143 copy_end = find_beginning_of_line(
dc49cd76 2144 contents, contents_sz,
4ddba79d
JS
2145 store.offset[i]-2, &new_line);
2146
02e5ba4a
JK
2147 if (copy_end > 0 && contents[copy_end-1] != '\n')
2148 new_line = 1;
2149
4ddba79d
JS
2150 /* write the first part of the config */
2151 if (copy_end > copy_begin) {
93c1e079
JH
2152 if (write_in_full(fd, contents + copy_begin,
2153 copy_end - copy_begin) <
2154 copy_end - copy_begin)
2155 goto write_err_out;
2156 if (new_line &&
2b7ca830 2157 write_str_in_full(fd, "\n") != 1)
93c1e079 2158 goto write_err_out;
4ddba79d
JS
2159 }
2160 copy_begin = store.offset[i];
10bea152
JS
2161 }
2162
10bea152
JS
2163 /* write the pair (value == NULL means unset) */
2164 if (value != NULL) {
93c1e079
JH
2165 if (store.state == START) {
2166 if (!store_write_section(fd, key))
2167 goto write_err_out;
480c9e52 2168 }
93c1e079
JH
2169 if (!store_write_pair(fd, key, value))
2170 goto write_err_out;
10bea152
JS
2171 }
2172
2173 /* write the rest of the config */
dc49cd76 2174 if (copy_begin < contents_sz)
93c1e079 2175 if (write_in_full(fd, contents + copy_begin,
dc49cd76
SP
2176 contents_sz - copy_begin) <
2177 contents_sz - copy_begin)
93c1e079 2178 goto write_err_out;
7a64592c
KB
2179
2180 munmap(contents, contents_sz);
2181 contents = NULL;
10bea152
JS
2182 }
2183
4ed7cd3a 2184 if (commit_lock_file(lock) < 0) {
08a3651f
SG
2185 error("could not write config file %s: %s", config_filename,
2186 strerror(errno));
7a397419 2187 ret = CONFIG_NO_WRITE;
e831855e 2188 lock = NULL;
dafc88b1 2189 goto out_free;
10bea152
JS
2190 }
2191
6cbf973c
BS
2192 /*
2193 * lock is committed, so don't try to roll it back below.
2194 * NOTE: Since lockfile.c keeps a linked list of all created
2195 * lock_file structures, it isn't safe to free(lock). It's
2196 * better to just leave it hanging around.
2197 */
2198 lock = NULL;
dafc88b1
SH
2199 ret = 0;
2200
3c8687a7
TA
2201 /* Invalidate the config cache */
2202 git_config_clear();
2203
dafc88b1 2204out_free:
6cbf973c
BS
2205 if (lock)
2206 rollback_lock_file(lock);
0a5f5759 2207 free(filename_buf);
3a1b3126
JK
2208 if (contents)
2209 munmap(contents, contents_sz);
54d160ec
SS
2210 if (in_fd >= 0)
2211 close(in_fd);
dafc88b1 2212 return ret;
93c1e079
JH
2213
2214write_err_out:
b4fb09e4 2215 ret = write_error(get_lock_file_path(lock));
93c1e079
JH
2216 goto out_free;
2217
10bea152
JS
2218}
2219
3d180648
PS
2220void git_config_set_multivar_in_file(const char *config_filename,
2221 const char *key, const char *value,
2222 const char *value_regex, int multi_replace)
b4c8aba6 2223{
30598ad0 2224 if (git_config_set_multivar_in_file_gently(config_filename, key, value,
9c14bb08 2225 value_regex, multi_replace))
8c3ca351 2226 die(_("could not set '%s' to '%s'"), key, value);
b4c8aba6
PS
2227}
2228
30598ad0
PS
2229int git_config_set_multivar_gently(const char *key, const char *value,
2230 const char *value_regex, int multi_replace)
5ec31182 2231{
30598ad0
PS
2232 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2233 multi_replace);
5ec31182
RR
2234}
2235
3d180648
PS
2236void git_config_set_multivar(const char *key, const char *value,
2237 const char *value_regex, int multi_replace)
5ec31182 2238{
3d180648
PS
2239 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2240 multi_replace);
5ec31182
RR
2241}
2242
118f8b24
PB
2243static int section_name_match (const char *buf, const char *name)
2244{
2245 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2246 if (buf[i] != '[')
2247 return 0;
2248 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2249 if (!dot && isspace(buf[i])) {
2250 dot = 1;
2251 if (name[j++] != '.')
2252 break;
2253 for (i++; isspace(buf[i]); i++)
2254 ; /* do nothing */
2255 if (buf[i] != '"')
2256 break;
2257 continue;
2258 }
2259 if (buf[i] == '\\' && dot)
2260 i++;
2261 else if (buf[i] == '"' && dot) {
2262 for (i++; isspace(buf[i]); i++)
2263 ; /* do_nothing */
2264 break;
2265 }
2266 if (buf[i] != name[j++])
2267 break;
2268 }
a4c0d463
AV
2269 if (buf[i] == ']' && name[j] == 0) {
2270 /*
2271 * We match, now just find the right length offset by
2272 * gobbling up any whitespace after it, as well
2273 */
2274 i++;
2275 for (; buf[i] && isspace(buf[i]); i++)
2276 ; /* do nothing */
2277 return i;
2278 }
2279 return 0;
118f8b24
PB
2280}
2281
94a35b1a
JK
2282static int section_name_is_ok(const char *name)
2283{
2284 /* Empty section names are bogus. */
2285 if (!*name)
2286 return 0;
2287
2288 /*
2289 * Before a dot, we must be alphanumeric or dash. After the first dot,
2290 * anything goes, so we can stop checking.
2291 */
2292 for (; *name && *name != '.'; name++)
2293 if (*name != '-' && !isalnum(*name))
2294 return 0;
2295 return 1;
2296}
2297
118f8b24 2298/* if new_name == NULL, the section is removed instead */
42bd39b5
JK
2299int git_config_rename_section_in_file(const char *config_filename,
2300 const char *old_name, const char *new_name)
0667fcfb 2301{
118f8b24 2302 int ret = 0, remove = 0;
42bd39b5 2303 char *filename_buf = NULL;
94a35b1a 2304 struct lock_file *lock;
0667fcfb
JS
2305 int out_fd;
2306 char buf[1024];
924aaf3e 2307 FILE *config_file;
daa22c6f 2308 struct stat st;
0667fcfb 2309
94a35b1a
JK
2310 if (new_name && !section_name_is_ok(new_name)) {
2311 ret = error("invalid section name: %s", new_name);
2312 goto out;
2313 }
2314
42bd39b5
JK
2315 if (!config_filename)
2316 config_filename = filename_buf = git_pathdup("config");
2317
f1064f6b 2318 lock = xcalloc(1, sizeof(struct lock_file));
0667fcfb 2319 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
fc1905bb 2320 if (out_fd < 0) {
64c0d71c 2321 ret = error("could not lock config file %s", config_filename);
fc1905bb
JH
2322 goto out;
2323 }
0667fcfb 2324
fc1905bb 2325 if (!(config_file = fopen(config_filename, "rb"))) {
01ebb9dc
GB
2326 /* no config file means nothing to rename, no error */
2327 goto unlock_and_out;
fc1905bb 2328 }
0667fcfb 2329
daa22c6f
EW
2330 fstat(fileno(config_file), &st);
2331
b4fb09e4 2332 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2569d239 2333 ret = error("chmod on %s failed: %s",
b4fb09e4 2334 get_lock_file_path(lock), strerror(errno));
daa22c6f
EW
2335 goto out;
2336 }
2337
0667fcfb
JS
2338 while (fgets(buf, sizeof(buf), config_file)) {
2339 int i;
480c9e52 2340 int length;
9a5abfc7 2341 char *output = buf;
0667fcfb
JS
2342 for (i = 0; buf[i] && isspace(buf[i]); i++)
2343 ; /* do nothing */
2344 if (buf[i] == '[') {
2345 /* it's a section */
a4c0d463
AV
2346 int offset = section_name_match(&buf[i], old_name);
2347 if (offset > 0) {
118f8b24
PB
2348 ret++;
2349 if (new_name == NULL) {
2350 remove = 1;
0667fcfb
JS
2351 continue;
2352 }
0667fcfb 2353 store.baselen = strlen(new_name);
480c9e52 2354 if (!store_write_section(out_fd, new_name)) {
b4fb09e4 2355 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2356 goto out;
2357 }
9a5abfc7
AV
2358 /*
2359 * We wrote out the new section, with
2360 * a newline, now skip the old
2361 * section's length
2362 */
2363 output += offset + i;
2364 if (strlen(output) > 0) {
2365 /*
2366 * More content means there's
2367 * a declaration to put on the
2368 * next line; indent with a
2369 * tab
2370 */
2371 output -= 1;
2372 output[0] = '\t';
2373 }
0667fcfb 2374 }
118f8b24 2375 remove = 0;
0667fcfb 2376 }
118f8b24
PB
2377 if (remove)
2378 continue;
9a5abfc7
AV
2379 length = strlen(output);
2380 if (write_in_full(out_fd, output, length) != length) {
b4fb09e4 2381 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2382 goto out;
2383 }
0667fcfb 2384 }
fc1905bb 2385 fclose(config_file);
8b590075 2386unlock_and_out:
4ed7cd3a 2387 if (commit_lock_file(lock) < 0)
08a3651f
SG
2388 ret = error("could not write config file %s: %s",
2389 config_filename, strerror(errno));
8b590075 2390out:
42bd39b5 2391 free(filename_buf);
0667fcfb
JS
2392 return ret;
2393}
40ea4ed9 2394
42bd39b5
JK
2395int git_config_rename_section(const char *old_name, const char *new_name)
2396{
4a7bb5ba 2397 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
2398}
2399
40ea4ed9
JH
2400/*
2401 * Call this to report error for your variable that should not
2402 * get a boolean value (i.e. "[my] var" means "true").
2403 */
a469a101 2404#undef config_error_nonbool
40ea4ed9
JH
2405int config_error_nonbool(const char *var)
2406{
8c3ca351 2407 return error("missing value for '%s'", var);
40ea4ed9 2408}
1b86bbb0
JK
2409
2410int parse_config_key(const char *var,
2411 const char *section,
2412 const char **subsection, int *subsection_len,
2413 const char **key)
2414{
2415 int section_len = strlen(section);
2416 const char *dot;
2417
2418 /* Does it start with "section." ? */
59556548 2419 if (!starts_with(var, section) || var[section_len] != '.')
1b86bbb0
JK
2420 return -1;
2421
2422 /*
2423 * Find the key; we don't know yet if we have a subsection, but we must
2424 * parse backwards from the end, since the subsection may have dots in
2425 * it, too.
2426 */
2427 dot = strrchr(var, '.');
2428 *key = dot + 1;
2429
2430 /* Did we have a subsection at all? */
2431 if (dot == var + section_len) {
2432 *subsection = NULL;
2433 *subsection_len = 0;
2434 }
2435 else {
2436 *subsection = var + section_len + 1;
2437 *subsection_len = dot - *subsection;
2438 }
2439
2440 return 0;
2441}
473166b9
LS
2442
2443const char *current_config_origin_type(void)
2444{
2445 return cf && cf->origin_type ? cf->origin_type : "command line";
2446}
2447
2448const char *current_config_name(void)
2449{
2450 return cf && cf->name ? cf->name : "";
2451}