1/*
2 * GIT - The information manager from hell
3 *
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
6 *
7 */
8#include "cache.h"
9#include "lockfile.h"
10#include "exec_cmd.h"
11#include "strbuf.h"
12#include "quote.h"
13#include "hashmap.h"
14#include "string-list.h"
15#include "utf8.h"
16struct config_source {
18 struct config_source *prev;
19 union {
20 FILE *file;
21 struct config_buf {
22 const char *buf;
23 size_t len;
24 size_t pos;
25 } buf;
26 } u;
27 enum config_origin_type origin_type;
28 const char *name;
29 const char *path;
30 int die_on_error;
31 int linenr;
32 int eof;
33 struct strbuf value;
34 struct strbuf var;
35 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);
39};
40/*
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 */
57static struct config_source *cf;
58static struct key_value_info *current_config_kvi;
59/*
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;
68static int zlib_compression_seen;
70/*
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;
77static int config_file_fgetc(struct config_source *conf)
79{
80 return getc_unlocked(conf->u.file);
81}
82static int config_file_ungetc(int c, struct config_source *conf)
84{
85 return ungetc(c, conf->u.file);
86}
87static long config_file_ftell(struct config_source *conf)
89{
90 return ftell(conf->u.file);
91}
92static 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 return EOF;
100}
101static int config_buf_ungetc(int c, struct config_source *conf)
103{
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 }
110 return EOF;
112}
113static long config_buf_ftell(struct config_source *conf)
115{
116 return conf->u.buf.pos;
117}
118#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;
130 char *expanded;
131 if (!path)
133 return config_error_nonbool("include.path");
134 expanded = expand_user_path(path);
136 if (!expanded)
137 return error("could not expand include path '%s'", path);
138 path = expanded;
139 /*
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 if (!cf || !cf->path)
148 return error("relative config includes must come from files");
149 slash = find_last_dir_sep(cf->path);
151 if (slash)
152 strbuf_add(&buf, cf->path, slash - cf->path + 1);
153 strbuf_addstr(&buf, path);
154 path = buf.buf;
155 }
156 if (!access_or_die(path, R_OK, 0)) {
158 if (++inc->depth > MAX_INCLUDE_DEPTH)
159 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
160 !cf ? "<unknown>" :
161 cf->name ? cf->name :
162 "the command line");
163 ret = git_config_from_file(git_config_include, path, inc);
164 inc->depth--;
165 }
166 strbuf_release(&buf);
167 free(expanded);
168 return ret;
169}
170int git_config_include(const char *var, const char *value, void *data)
172{
173 struct config_include_data *inc = data;
174 int ret;
175 /*
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 if (!strcmp(var, "include.path"))
185 ret = handle_path_include(value, inc);
186 return ret;
187}
188void git_config_push_parameter(const char *text)
190{
191 struct strbuf env = STRBUF_INIT;
192 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
193 if (old && *old) {
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}
201int git_config_parse_parameter(const char *text,
203 config_fn_t fn, void *data)
204{
205 const char *value;
206 struct strbuf **pair;
207 pair = strbuf_split_str(text, '=', 2);
209 if (!pair[0])
210 return error("bogus config parameter: %s", text);
211 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
213 strbuf_setlen(pair[0], pair[0]->len - 1);
214 value = pair[1] ? pair[1]->buf : "";
215 } else {
216 value = NULL;
217 }
218 strbuf_trim(pair[0]);
220 if (!pair[0]->len) {
221 strbuf_list_free(pair);
222 return error("bogus config parameter: %s", text);
223 }
224 strbuf_tolower(pair[0]);
225 if (fn(pair[0]->buf, value, data) < 0) {
226 strbuf_list_free(pair);
227 return -1;
228 }
229 strbuf_list_free(pair);
230 return 0;
231}
232int git_config_from_parameters(config_fn_t fn, void *data)
234{
235 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
236 int ret = 0;
237 char *envw;
238 const char **argv = NULL;
239 int nr = 0, alloc = 0;
240 int i;
241 struct config_source source;
242 if (!env)
244 return 0;
245 memset(&source, 0, sizeof(source));
247 source.prev = cf;
248 source.origin_type = CONFIG_ORIGIN_CMDLINE;
249 cf = &source;
250 /* sq_dequote will write over it */
252 envw = xstrdup(env);
253 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
255 ret = error("bogus format in " CONFIG_DATA_ENVIRONMENT);
256 goto out;
257 }
258 for (i = 0; i < nr; i++) {
260 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
261 ret = -1;
262 goto out;
263 }
264 }
265out:
267 free(argv);
268 free(envw);
269 cf = source.prev;
270 return ret;
271}
272static int get_next_char(void)
274{
275 int c = cf->do_fgetc(cf);
276 if (c == '\r') {
278 /* DOS like systems */
279 c = cf->do_fgetc(cf);
280 if (c != '\n') {
281 if (c != EOF)
282 cf->do_ungetc(c, cf);
283 c = '\r';
284 }
285 }
286 if (c == '\n')
287 cf->linenr++;
288 if (c == EOF) {
289 cf->eof = 1;
290 cf->linenr++;
291 c = '\n';
292 }
293 return c;
294}
295static char *parse_value(void)
297{
298 int quote = 0, comment = 0, space = 0;
299 strbuf_reset(&cf->value);
301 for (;;) {
302 int c = get_next_char();
303 if (c == '\n') {
304 if (quote) {
305 cf->linenr--;
306 return NULL;
307 }
308 return cf->value.buf;
309 }
310 if (comment)
311 continue;
312 if (isspace(c) && !quote) {
313 if (cf->value.len)
314 space++;
315 continue;
316 }
317 if (!quote) {
318 if (c == ';' || c == '#') {
319 comment = 1;
320 continue;
321 }
322 }
323 for (; space; space--)
324 strbuf_addch(&cf->value, ' ');
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;
339 /* Some characters escape as themselves */
340 case '\\': case '"':
341 break;
342 /* Reject unknown escape sequences */
343 default:
344 return NULL;
345 }
346 strbuf_addch(&cf->value, c);
347 continue;
348 }
349 if (c == '"') {
350 quote = 1-quote;
351 continue;
352 }
353 strbuf_addch(&cf->value, c);
354 }
355}
356static inline int iskeychar(int c)
358{
359 return isalnum(c) || c == '-';
360}
361static int get_value(config_fn_t fn, void *data, struct strbuf *name)
363{
364 int c;
365 char *value;
366 int ret;
367 /* Get the full name */
369 for (;;) {
370 c = get_next_char();
371 if (cf->eof)
372 break;
373 if (!iskeychar(c))
374 break;
375 strbuf_addch(name, tolower(c));
376 }
377 while (c == ' ' || c == '\t')
379 c = get_next_char();
380 value = NULL;
382 if (c != '\n') {
383 if (c != '=')
384 return -1;
385 value = parse_value();
386 if (!value)
387 return -1;
388 }
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;
398}
399static int get_extended_base_var(struct strbuf *name, int c)
401{
402 do {
403 if (c == '\n')
404 goto error_incomplete_line;
405 c = get_next_char();
406 } while (isspace(c));
407 /* We require the format to be '[base "extension"]' */
409 if (c != '"')
410 return -1;
411 strbuf_addch(name, '.');
412 for (;;) {
414 int c = get_next_char();
415 if (c == '\n')
416 goto error_incomplete_line;
417 if (c == '"')
418 break;
419 if (c == '\\') {
420 c = get_next_char();
421 if (c == '\n')
422 goto error_incomplete_line;
423 }
424 strbuf_addch(name, c);
425 }
426 /* Final ']' */
428 if (get_next_char() != ']')
429 return -1;
430 return 0;
431error_incomplete_line:
432 cf->linenr--;
433 return -1;
434}
435static int get_base_var(struct strbuf *name)
437{
438 for (;;) {
439 int c = get_next_char();
440 if (cf->eof)
441 return -1;
442 if (c == ']')
443 return 0;
444 if (isspace(c))
445 return get_extended_base_var(name, c);
446 if (!iskeychar(c) && c != '.')
447 return -1;
448 strbuf_addch(name, tolower(c));
449 }
450}
451static int git_parse_source(config_fn_t fn, void *data)
453{
454 int comment = 0;
455 int baselen = 0;
456 struct strbuf *var = &cf->var;
457 int error_return = 0;
458 char *error_msg = NULL;
459 /* U+FEFF Byte Order Mark in UTF8 */
461 const char *bomptr = utf8_bom;
462 for (;;) {
464 int c = get_next_char();
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. */
469 if (c == (*bomptr & 0377)) {
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 }
480 if (c == '\n') {
481 if (cf->eof)
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 == '[') {
493 /* Reset prior to determining a new stem */
494 strbuf_reset(var);
495 if (get_base_var(var) < 0 || var->len < 1)
496 break;
497 strbuf_addch(var, '.');
498 baselen = var->len;
499 continue;
500 }
501 if (!isalpha(c))
502 break;
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)
511 break;
512 }
513 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 if (cf->die_on_error)
541 die("%s", error_msg);
542 else
543 error_return = error("%s", error_msg);
544 free(error_msg);
546 return error_return;
547}
548static int parse_unit_factor(const char *end, uintmax_t *val)
550{
551 if (!*end)
552 return 1;
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;
566}
567static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
569{
570 if (value && *value) {
571 char *end;
572 intmax_t val;
573 uintmax_t uval;
574 uintmax_t factor = 1;
575 errno = 0;
577 val = strtoimax(value, &end, 0);
578 if (errno == ERANGE)
579 return 0;
580 if (!parse_unit_factor(end, &factor)) {
581 errno = EINVAL;
582 return 0;
583 }
584 uval = labs(val);
585 uval *= factor;
586 if (uval > max || labs(val) > uval) {
587 errno = ERANGE;
588 return 0;
589 }
590 val *= factor;
591 *ret = val;
592 return 1;
593 }
594 errno = EINVAL;
595 return 0;
596}
597static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
599{
600 if (value && *value) {
601 char *end;
602 uintmax_t val;
603 uintmax_t oldval;
604 errno = 0;
606 val = strtoumax(value, &end, 0);
607 if (errno == ERANGE)
608 return 0;
609 oldval = val;
610 if (!parse_unit_factor(end, &val)) {
611 errno = EINVAL;
612 return 0;
613 }
614 if (val > max || oldval > val) {
615 errno = ERANGE;
616 return 0;
617 }
618 *ret = val;
619 return 1;
620 }
621 errno = EINVAL;
622 return 0;
623}
624static int git_parse_int(const char *value, int *ret)
626{
627 intmax_t tmp;
628 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
629 return 0;
630 *ret = tmp;
631 return 1;
632}
633static 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}
642int 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}
651NORETURN
653static void die_bad_number(const char *name, const char *value)
654{
655 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
656 if (!value)
658 value = "";
659 if (!(cf && cf->name))
661 die(_("bad numeric config value '%s' for '%s': %s"),
662 value, name, error_type);
663 switch (cf->origin_type) {
665 case CONFIG_ORIGIN_BLOB:
666 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
667 value, name, cf->name, error_type);
668 case CONFIG_ORIGIN_FILE:
669 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
670 value, name, cf->name, error_type);
671 case CONFIG_ORIGIN_STDIN:
672 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
673 value, name, error_type);
674 case CONFIG_ORIGIN_SUBMODULE_BLOB:
675 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
676 value, name, cf->name, error_type);
677 case CONFIG_ORIGIN_CMDLINE:
678 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
679 value, name, cf->name, error_type);
680 default:
681 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
682 value, name, cf->name, error_type);
683 }
684}
685int git_config_int(const char *name, const char *value)
687{
688 int ret;
689 if (!git_parse_int(value, &ret))
690 die_bad_number(name, value);
691 return ret;
692}
693int64_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);
699 return ret;
700}
701unsigned long git_config_ulong(const char *name, const char *value)
703{
704 unsigned long ret;
705 if (!git_parse_ulong(value, &ret))
706 die_bad_number(name, value);
707 return ret;
708}
709int git_parse_maybe_bool(const char *value)
711{
712 if (!value)
713 return 1;
714 if (!*value)
715 return 0;
716 if (!strcasecmp(value, "true")
717 || !strcasecmp(value, "yes")
718 || !strcasecmp(value, "on"))
719 return 1;
720 if (!strcasecmp(value, "false")
721 || !strcasecmp(value, "no")
722 || !strcasecmp(value, "off"))
723 return 0;
724 return -1;
725}
726int git_config_maybe_bool(const char *name, const char *value)
728{
729 int v = git_parse_maybe_bool(value);
730 if (0 <= v)
731 return v;
732 if (git_parse_int(value, &v))
733 return !!v;
734 return -1;
735}
736int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
738{
739 int v = git_parse_maybe_bool(value);
740 if (0 <= v) {
741 *is_bool = 1;
742 return v;
743 }
744 *is_bool = 0;
745 return git_config_int(name, value);
746}
747int git_config_bool(const char *name, const char *value)
749{
750 int discard;
751 return !!git_config_bool_or_int(name, value, &discard);
752}
753int 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}
761int 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)
768 die(_("failed to expand user dir in: '%s'"), value);
769 return 0;
770}
771static int git_default_core_config(const char *var, const char *value)
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 }
779 if (!strcmp(var, "core.trustctime")) {
780 trust_ctime = git_config_bool(var, value);
781 return 0;
782 }
783 if (!strcmp(var, "core.checkstat")) {
784 if (!strcasecmp(value, "default"))
785 check_stat = 1;
786 else if (!strcasecmp(value, "minimal"))
787 check_stat = 0;
788 }
789 if (!strcmp(var, "core.quotepath")) {
791 quote_path_fully = git_config_bool(var, value);
792 return 0;
793 }
794 if (!strcmp(var, "core.symlinks")) {
796 has_symlinks = git_config_bool(var, value);
797 return 0;
798 }
799 if (!strcmp(var, "core.ignorecase")) {
801 ignore_case = git_config_bool(var, value);
802 return 0;
803 }
804 if (!strcmp(var, "core.attributesfile"))
806 return git_config_pathname(&git_attributes_file, var, value);
807 if (!strcmp(var, "core.hookspath"))
809 return git_config_pathname(&git_hooks_path, var, value);
810 if (!strcmp(var, "core.bare")) {
812 is_bare_repository_cfg = git_config_bool(var, value);
813 return 0;
814 }
815 if (!strcmp(var, "core.ignorestat")) {
817 assume_unchanged = git_config_bool(var, value);
818 return 0;
819 }
820 if (!strcmp(var, "core.prefersymlinkrefs")) {
822 prefer_symlink_refs = git_config_bool(var, value);
823 return 0;
824 }
825 if (!strcmp(var, "core.logallrefupdates")) {
827 log_all_ref_updates = git_config_bool(var, value);
828 return 0;
829 }
830 if (!strcmp(var, "core.warnambiguousrefs")) {
832 warn_ambiguous_refs = git_config_bool(var, value);
833 return 0;
834 }
835 if (!strcmp(var, "core.abbrev")) {
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 if (!strcmp(var, "core.loosecompression")) {
845 int level = git_config_int(var, value);
846 if (level == -1)
847 level = Z_DEFAULT_COMPRESSION;
848 else if (level < 0 || level > Z_BEST_COMPRESSION)
849 die(_("bad zlib compression level %d"), level);
850 zlib_compression_level = level;
851 zlib_compression_seen = 1;
852 return 0;
853 }
854 if (!strcmp(var, "core.compression")) {
856 int level = git_config_int(var, value);
857 if (level == -1)
858 level = Z_DEFAULT_COMPRESSION;
859 else if (level < 0 || level > Z_BEST_COMPRESSION)
860 die(_("bad zlib compression level %d"), level);
861 core_compression_level = level;
862 core_compression_seen = 1;
863 if (!zlib_compression_seen)
864 zlib_compression_level = level;
865 return 0;
866 }
867 if (!strcmp(var, "core.packedgitwindowsize")) {
869 int pgsz_x2 = getpagesize() * 2;
870 packed_git_window_size = git_config_ulong(var, value);
871 /* This value must be multiple of (pagesize * 2) */
873 packed_git_window_size /= pgsz_x2;
874 if (packed_git_window_size < 1)
875 packed_git_window_size = 1;
876 packed_git_window_size *= pgsz_x2;
877 return 0;
878 }
879 if (!strcmp(var, "core.bigfilethreshold")) {
881 big_file_threshold = git_config_ulong(var, value);
882 return 0;
883 }
884 if (!strcmp(var, "core.packedgitlimit")) {
886 packed_git_limit = git_config_ulong(var, value);
887 return 0;
888 }
889 if (!strcmp(var, "core.deltabasecachelimit")) {
891 delta_base_cache_limit = git_config_ulong(var, value);
892 return 0;
893 }
894 if (!strcmp(var, "core.autocrlf")) {
896 if (value && !strcasecmp(value, "input")) {
897 auto_crlf = AUTO_CRLF_INPUT;
898 return 0;
899 }
900 auto_crlf = git_config_bool(var, value);
901 return 0;
902 }
903 if (!strcmp(var, "core.safecrlf")) {
905 if (value && !strcasecmp(value, "warn")) {
906 safe_crlf = SAFE_CRLF_WARN;
907 return 0;
908 }
909 safe_crlf = git_config_bool(var, value);
910 return 0;
911 }
912 if (!strcmp(var, "core.eol")) {
914 if (value && !strcasecmp(value, "lf"))
915 core_eol = EOL_LF;
916 else if (value && !strcasecmp(value, "crlf"))
917 core_eol = EOL_CRLF;
918 else if (value && !strcasecmp(value, "native"))
919 core_eol = EOL_NATIVE;
920 else
921 core_eol = EOL_UNSET;
922 return 0;
923 }
924 if (!strcmp(var, "core.notesref")) {
926 notes_ref_name = xstrdup(value);
927 return 0;
928 }
929 if (!strcmp(var, "core.editor"))
931 return git_config_string(&editor_program, var, value);
932 if (!strcmp(var, "core.commentchar")) {
934 if (!value)
935 return config_error_nonbool(var);
936 else if (!strcasecmp(value, "auto"))
937 auto_comment_line_char = 1;
938 else if (value[0] && !value[1]) {
939 comment_line_char = value[0];
940 auto_comment_line_char = 0;
941 } else
942 return error("core.commentChar should only be one character");
943 return 0;
944 }
945 if (!strcmp(var, "core.askpass"))
947 return git_config_string(&askpass_program, var, value);
948 if (!strcmp(var, "core.excludesfile"))
950 return git_config_pathname(&excludes_file, var, value);
951 if (!strcmp(var, "core.whitespace")) {
953 if (!value)
954 return config_error_nonbool(var);
955 whitespace_rule_cfg = parse_whitespace_rule(value);
956 return 0;
957 }
958 if (!strcmp(var, "core.fsyncobjectfiles")) {
960 fsync_object_files = git_config_bool(var, value);
961 return 0;
962 }
963 if (!strcmp(var, "core.preloadindex")) {
965 core_preload_index = git_config_bool(var, value);
966 return 0;
967 }
968 if (!strcmp(var, "core.createobject")) {
970 if (!strcmp(value, "rename"))
971 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
972 else if (!strcmp(value, "link"))
973 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
974 else
975 die(_("invalid mode for object creation: %s"), value);
976 return 0;
977 }
978 if (!strcmp(var, "core.sparsecheckout")) {
980 core_apply_sparse_checkout = git_config_bool(var, value);
981 return 0;
982 }
983 if (!strcmp(var, "core.precomposeunicode")) {
985 precomposed_unicode = git_config_bool(var, value);
986 return 0;
987 }
988 if (!strcmp(var, "core.protecthfs")) {
990 protect_hfs = git_config_bool(var, value);
991 return 0;
992 }
993 if (!strcmp(var, "core.protectntfs")) {
995 protect_ntfs = git_config_bool(var, value);
996 return 0;
997 }
998 if (!strcmp(var, "core.hidedotfiles")) {
1000 if (value && !strcasecmp(value, "dotgitonly"))
1001 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
1002 else
1003 hide_dotfiles = git_config_bool(var, value);
1004 return 0;
1005 }
1006 /* Add other config variables here and to Documentation/config.txt. */
1008 return 0;
1009}
1010static int git_default_i18n_config(const char *var, const char *value)
1012{
1013 if (!strcmp(var, "i18n.commitencoding"))
1014 return git_config_string(&git_commit_encoding, var, value);
1015 if (!strcmp(var, "i18n.logoutputencoding"))
1017 return git_config_string(&git_log_output_encoding, var, value);
1018 /* Add other config variables here and to Documentation/config.txt. */
1020 return 0;
1021}
1022static int git_default_branch_config(const char *var, const char *value)
1024{
1025 if (!strcmp(var, "branch.autosetupmerge")) {
1026 if (value && !strcasecmp(value, "always")) {
1027 git_branch_track = BRANCH_TRACK_ALWAYS;
1028 return 0;
1029 }
1030 git_branch_track = git_config_bool(var, value);
1031 return 0;
1032 }
1033 if (!strcmp(var, "branch.autosetuprebase")) {
1034 if (!value)
1035 return config_error_nonbool(var);
1036 else if (!strcmp(value, "never"))
1037 autorebase = AUTOREBASE_NEVER;
1038 else if (!strcmp(value, "local"))
1039 autorebase = AUTOREBASE_LOCAL;
1040 else if (!strcmp(value, "remote"))
1041 autorebase = AUTOREBASE_REMOTE;
1042 else if (!strcmp(value, "always"))
1043 autorebase = AUTOREBASE_ALWAYS;
1044 else
1045 return error("malformed value for %s", var);
1046 return 0;
1047 }
1048 /* Add other config variables here and to Documentation/config.txt. */
1050 return 0;
1051}
1052static int git_default_push_config(const char *var, const char *value)
1054{
1055 if (!strcmp(var, "push.default")) {
1056 if (!value)
1057 return config_error_nonbool(var);
1058 else if (!strcmp(value, "nothing"))
1059 push_default = PUSH_DEFAULT_NOTHING;
1060 else if (!strcmp(value, "matching"))
1061 push_default = PUSH_DEFAULT_MATCHING;
1062 else if (!strcmp(value, "simple"))
1063 push_default = PUSH_DEFAULT_SIMPLE;
1064 else if (!strcmp(value, "upstream"))
1065 push_default = PUSH_DEFAULT_UPSTREAM;
1066 else if (!strcmp(value, "tracking")) /* deprecated */
1067 push_default = PUSH_DEFAULT_UPSTREAM;
1068 else if (!strcmp(value, "current"))
1069 push_default = PUSH_DEFAULT_CURRENT;
1070 else {
1071 error("malformed value for %s: %s", var, value);
1072 return error("Must be one of nothing, matching, simple, "
1073 "upstream or current.");
1074 }
1075 return 0;
1076 }
1077 /* Add other config variables here and to Documentation/config.txt. */
1079 return 0;
1080}
1081static int git_default_mailmap_config(const char *var, const char *value)
1083{
1084 if (!strcmp(var, "mailmap.file"))
1085 return git_config_pathname(&git_mailmap_file, var, value);
1086 if (!strcmp(var, "mailmap.blob"))
1087 return git_config_string(&git_mailmap_blob, var, value);
1088 /* Add other config variables here and to Documentation/config.txt. */
1090 return 0;
1091}
1092int git_default_config(const char *var, const char *value, void *dummy)
1094{
1095 if (starts_with(var, "core."))
1096 return git_default_core_config(var, value);
1097 if (starts_with(var, "user."))
1099 return git_ident_config(var, value, dummy);
1100 if (starts_with(var, "i18n."))
1102 return git_default_i18n_config(var, value);
1103 if (starts_with(var, "branch."))
1105 return git_default_branch_config(var, value);
1106 if (starts_with(var, "push."))
1108 return git_default_push_config(var, value);
1109 if (starts_with(var, "mailmap."))
1111 return git_default_mailmap_config(var, value);
1112 if (starts_with(var, "advice."))
1114 return git_default_advice_config(var, value);
1115 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1117 pager_use_color = git_config_bool(var,value);
1118 return 0;
1119 }
1120 if (!strcmp(var, "pack.packsizelimit")) {
1122 pack_size_limit_cfg = git_config_ulong(var, value);
1123 return 0;
1124 }
1125 /* Add other config variables here and to Documentation/config.txt. */
1126 return 0;
1127}
1128/*
1130 * All source specific fields in the union, die_on_error, name and the callbacks
1131 * fgetc, ungetc, ftell of top need to be initialized before calling
1132 * this function.
1133 */
1134static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
1135{
1136 int ret;
1137 /* push config-file parsing state stack */
1139 top->prev = cf;
1140 top->linenr = 1;
1141 top->eof = 0;
1142 strbuf_init(&top->value, 1024);
1143 strbuf_init(&top->var, 1024);
1144 cf = top;
1145 ret = git_parse_source(fn, data);
1147 /* pop config-file parsing state stack */
1149 strbuf_release(&top->value);
1150 strbuf_release(&top->var);
1151 cf = top->prev;
1152 return ret;
1154}
1155static int do_config_from_file(config_fn_t fn,
1157 const enum config_origin_type origin_type,
1158 const char *name, const char *path, FILE *f,
1159 void *data)
1160{
1161 struct config_source top;
1162 top.u.file = f;
1164 top.origin_type = origin_type;
1165 top.name = name;
1166 top.path = path;
1167 top.die_on_error = 1;
1168 top.do_fgetc = config_file_fgetc;
1169 top.do_ungetc = config_file_ungetc;
1170 top.do_ftell = config_file_ftell;
1171 return do_config_from(&top, fn, data);
1173}
1174static int git_config_from_stdin(config_fn_t fn, void *data)
1176{
1177 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin, data);
1178}
1179int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1181{
1182 int ret = -1;
1183 FILE *f;
1184 f = fopen(filename, "r");
1186 if (f) {
1187 flockfile(f);
1188 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename, filename, f, data);
1189 funlockfile(f);
1190 fclose(f);
1191 }
1192 return ret;
1193}
1194int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_type,
1196 const char *name, const char *buf, size_t len, void *data)
1197{
1198 struct config_source top;
1199 top.u.buf.buf = buf;
1201 top.u.buf.len = len;
1202 top.u.buf.pos = 0;
1203 top.origin_type = origin_type;
1204 top.name = name;
1205 top.path = NULL;
1206 top.die_on_error = 0;
1207 top.do_fgetc = config_buf_fgetc;
1208 top.do_ungetc = config_buf_ungetc;
1209 top.do_ftell = config_buf_ftell;
1210 return do_config_from(&top, fn, data);
1212}
1213static int git_config_from_blob_sha1(config_fn_t fn,
1215 const char *name,
1216 const unsigned char *sha1,
1217 void *data)
1218{
1219 enum object_type type;
1220 char *buf;
1221 unsigned long size;
1222 int ret;
1223 buf = read_sha1_file(sha1, &type, &size);
1225 if (!buf)
1226 return error("unable to load config blob object '%s'", name);
1227 if (type != OBJ_BLOB) {
1228 free(buf);
1229 return error("reference '%s' does not point to a blob", name);
1230 }
1231 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size, data);
1233 free(buf);
1234 return ret;
1236}
1237static int git_config_from_blob_ref(config_fn_t fn,
1239 const char *name,
1240 void *data)
1241{
1242 unsigned char sha1[20];
1243 if (get_sha1(name, sha1) < 0)
1245 return error("unable to resolve config blob '%s'", name);
1246 return git_config_from_blob_sha1(fn, name, sha1, data);
1247}
1248const char *git_etc_gitconfig(void)
1250{
1251 static const char *system_wide;
1252 if (!system_wide)
1253 system_wide = system_path(ETC_GITCONFIG);
1254 return system_wide;
1255}
1256/*
1258 * Parse environment variable 'k' as a boolean (in various
1259 * possible spellings); if missing, use the default value 'def'.
1260 */
1261int git_env_bool(const char *k, int def)
1262{
1263 const char *v = getenv(k);
1264 return v ? git_config_bool(k, v) : def;
1265}
1266/*
1268 * Parse environment variable 'k' as ulong with possibly a unit
1269 * suffix; if missing, use the default value 'val'.
1270 */
1271unsigned long git_env_ulong(const char *k, unsigned long val)
1272{
1273 const char *v = getenv(k);
1274 if (v && !git_parse_ulong(v, &val))
1275 die("failed to parse %s", k);
1276 return val;
1277}
1278int git_config_system(void)
1280{
1281 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1282}
1283static int do_git_config_sequence(config_fn_t fn, void *data)
1285{
1286 int ret = 0;
1287 char *xdg_config = xdg_config_home("config");
1288 char *user_config = expand_user_path("~/.gitconfig");
1289 char *repo_config = have_git_dir() ? git_pathdup("config") : NULL;
1290 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
1292 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
1293 ret += git_config_from_file(fn, git_etc_gitconfig(),
1294 data);
1295 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
1297 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
1298 ret += git_config_from_file(fn, xdg_config, data);
1299 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
1301 ret += git_config_from_file(fn, user_config, data);
1302 current_parsing_scope = CONFIG_SCOPE_REPO;
1304 if (repo_config && !access_or_die(repo_config, R_OK, 0))
1305 ret += git_config_from_file(fn, repo_config, data);
1306 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
1308 if (git_config_from_parameters(fn, data) < 0)
1309 die(_("unable to parse command-line config"));
1310 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
1312 free(xdg_config);
1313 free(user_config);
1314 free(repo_config);
1315 return ret;
1316}
1317int git_config_with_options(config_fn_t fn, void *data,
1319 struct git_config_source *config_source,
1320 int respect_includes)
1321{
1322 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1323 if (respect_includes) {
1325 inc.fn = fn;
1326 inc.data = data;
1327 fn = git_config_include;
1328 data = &inc;
1329 }
1330 /*
1332 * If we have a specific filename, use it. Otherwise, follow the
1333 * regular lookup sequence.
1334 */
1335 if (config_source && config_source->use_stdin)
1336 return git_config_from_stdin(fn, data);
1337 else if (config_source && config_source->file)
1338 return git_config_from_file(fn, config_source->file, data);
1339 else if (config_source && config_source->blob)
1340 return git_config_from_blob_ref(fn, config_source->blob, data);
1341 return do_git_config_sequence(fn, data);
1343}
1344static void git_config_raw(config_fn_t fn, void *data)
1346{
1347 if (git_config_with_options(fn, data, NULL, 1) < 0)
1348 /*
1349 * git_config_with_options() normally returns only
1350 * zero, as most errors are fatal, and
1351 * non-fatal potential errors are guarded by "if"
1352 * statements that are entered only when no error is
1353 * possible.
1354 *
1355 * If we ever encounter a non-fatal error, it means
1356 * something went really wrong and we should stop
1357 * immediately.
1358 */
1359 die(_("unknown error occurred while reading the configuration files"));
1360}
1361static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
1363{
1364 int i, value_index;
1365 struct string_list *values;
1366 struct config_set_element *entry;
1367 struct configset_list *list = &cs->list;
1368 for (i = 0; i < list->nr; i++) {
1370 entry = list->items[i].e;
1371 value_index = list->items[i].value_index;
1372 values = &entry->value_list;
1373 current_config_kvi = values->items[value_index].util;
1375 if (fn(entry->key, values->items[value_index].string, data) < 0)
1377 git_die_config_linenr(entry->key,
1378 current_config_kvi->filename,
1379 current_config_kvi->linenr);
1380 current_config_kvi = NULL;
1382 }
1383}
1384static void git_config_check_init(void);
1386void git_config(config_fn_t fn, void *data)
1388{
1389 git_config_check_init();
1390 configset_iter(&the_config_set, fn, data);
1391}
1392static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1394{
1395 struct config_set_element k;
1396 struct config_set_element *found_entry;
1397 char *normalized_key;
1398 /*
1399 * `key` may come from the user, so normalize it before using it
1400 * for querying entries from the hashmap.
1401 */
1402 if (git_config_parse_key(key, &normalized_key, NULL))
1403 return NULL;
1404 hashmap_entry_init(&k, strhash(normalized_key));
1406 k.key = normalized_key;
1407 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1408 free(normalized_key);
1409 return found_entry;
1410}
1411static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1413{
1414 struct config_set_element *e;
1415 struct string_list_item *si;
1416 struct configset_list_item *l_item;
1417 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1418 e = configset_find_element(cs, key);
1420 /*
1421 * Since the keys are being fed by git_config*() callback mechanism, they
1422 * are already normalized. So simply add them without any further munging.
1423 */
1424 if (!e) {
1425 e = xmalloc(sizeof(*e));
1426 hashmap_entry_init(e, strhash(key));
1427 e->key = xstrdup(key);
1428 string_list_init(&e->value_list, 1);
1429 hashmap_add(&cs->config_hash, e);
1430 }
1431 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
1432 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1434 l_item = &cs->list.items[cs->list.nr++];
1435 l_item->e = e;
1436 l_item->value_index = e->value_list.nr - 1;
1437 if (!cf)
1439 die("BUG: configset_add_value has no source");
1440 if (cf->name) {
1441 kv_info->filename = strintern(cf->name);
1442 kv_info->linenr = cf->linenr;
1443 kv_info->origin_type = cf->origin_type;
1444 } else {
1445 /* for values read from `git_config_from_parameters()` */
1446 kv_info->filename = NULL;
1447 kv_info->linenr = -1;
1448 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
1449 }
1450 kv_info->scope = current_parsing_scope;
1451 si->util = kv_info;
1452 return 0;
1454}
1455static int config_set_element_cmp(const struct config_set_element *e1,
1457 const struct config_set_element *e2, const void *unused)
1458{
1459 return strcmp(e1->key, e2->key);
1460}
1461void git_configset_init(struct config_set *cs)
1463{
1464 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1465 cs->hash_initialized = 1;
1466 cs->list.nr = 0;
1467 cs->list.alloc = 0;
1468 cs->list.items = NULL;
1469}
1470void git_configset_clear(struct config_set *cs)
1472{
1473 struct config_set_element *entry;
1474 struct hashmap_iter iter;
1475 if (!cs->hash_initialized)
1476 return;
1477 hashmap_iter_init(&cs->config_hash, &iter);
1479 while ((entry = hashmap_iter_next(&iter))) {
1480 free(entry->key);
1481 string_list_clear(&entry->value_list, 1);
1482 }
1483 hashmap_free(&cs->config_hash, 1);
1484 cs->hash_initialized = 0;
1485 free(cs->list.items);
1486 cs->list.nr = 0;
1487 cs->list.alloc = 0;
1488 cs->list.items = NULL;
1489}
1490static int config_set_callback(const char *key, const char *value, void *cb)
1492{
1493 struct config_set *cs = cb;
1494 configset_add_value(cs, key, value);
1495 return 0;
1496}
1497int git_configset_add_file(struct config_set *cs, const char *filename)
1499{
1500 return git_config_from_file(config_set_callback, filename, cs);
1501}
1502int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1504{
1505 const struct string_list *values = NULL;
1506 /*
1507 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1508 * queried key in the files of the configset, the value returned will be the last
1509 * value in the value list for that key.
1510 */
1511 values = git_configset_get_value_multi(cs, key);
1512 if (!values)
1514 return 1;
1515 assert(values->nr > 0);
1516 *value = values->items[values->nr - 1].string;
1517 return 0;
1518}
1519const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1521{
1522 struct config_set_element *e = configset_find_element(cs, key);
1523 return e ? &e->value_list : NULL;
1524}
1525int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1527{
1528 const char *value;
1529 if (!git_configset_get_value(cs, key, &value))
1530 return git_config_string(dest, key, value);
1531 else
1532 return 1;
1533}
1534int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1536{
1537 return git_configset_get_string_const(cs, key, (const char **)dest);
1538}
1539int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1541{
1542 const char *value;
1543 if (!git_configset_get_value(cs, key, &value)) {
1544 *dest = git_config_int(key, value);
1545 return 0;
1546 } else
1547 return 1;
1548}
1549int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1551{
1552 const char *value;
1553 if (!git_configset_get_value(cs, key, &value)) {
1554 *dest = git_config_ulong(key, value);
1555 return 0;
1556 } else
1557 return 1;
1558}
1559int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1561{
1562 const char *value;
1563 if (!git_configset_get_value(cs, key, &value)) {
1564 *dest = git_config_bool(key, value);
1565 return 0;
1566 } else
1567 return 1;
1568}
1569int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1571 int *is_bool, int *dest)
1572{
1573 const char *value;
1574 if (!git_configset_get_value(cs, key, &value)) {
1575 *dest = git_config_bool_or_int(key, value, is_bool);
1576 return 0;
1577 } else
1578 return 1;
1579}
1580int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1582{
1583 const char *value;
1584 if (!git_configset_get_value(cs, key, &value)) {
1585 *dest = git_config_maybe_bool(key, value);
1586 if (*dest == -1)
1587 return -1;
1588 return 0;
1589 } else
1590 return 1;
1591}
1592int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1594{
1595 const char *value;
1596 if (!git_configset_get_value(cs, key, &value))
1597 return git_config_pathname(dest, key, value);
1598 else
1599 return 1;
1600}
1601static void git_config_check_init(void)
1603{
1604 if (the_config_set.hash_initialized)
1605 return;
1606 git_configset_init(&the_config_set);
1607 git_config_raw(config_set_callback, &the_config_set);
1608}
1609void git_config_clear(void)
1611{
1612 if (!the_config_set.hash_initialized)
1613 return;
1614 git_configset_clear(&the_config_set);
1615}
1616int git_config_get_value(const char *key, const char **value)
1618{
1619 git_config_check_init();
1620 return git_configset_get_value(&the_config_set, key, value);
1621}
1622const struct string_list *git_config_get_value_multi(const char *key)
1624{
1625 git_config_check_init();
1626 return git_configset_get_value_multi(&the_config_set, key);
1627}
1628int git_config_get_string_const(const char *key, const char **dest)
1630{
1631 int ret;
1632 git_config_check_init();
1633 ret = git_configset_get_string_const(&the_config_set, key, dest);
1634 if (ret < 0)
1635 git_die_config(key, NULL);
1636 return ret;
1637}
1638int git_config_get_string(const char *key, char **dest)
1640{
1641 git_config_check_init();
1642 return git_config_get_string_const(key, (const char **)dest);
1643}
1644int git_config_get_int(const char *key, int *dest)
1646{
1647 git_config_check_init();
1648 return git_configset_get_int(&the_config_set, key, dest);
1649}
1650int git_config_get_ulong(const char *key, unsigned long *dest)
1652{
1653 git_config_check_init();
1654 return git_configset_get_ulong(&the_config_set, key, dest);
1655}
1656int git_config_get_bool(const char *key, int *dest)
1658{
1659 git_config_check_init();
1660 return git_configset_get_bool(&the_config_set, key, dest);
1661}
1662int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1664{
1665 git_config_check_init();
1666 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1667}
1668int git_config_get_maybe_bool(const char *key, int *dest)
1670{
1671 git_config_check_init();
1672 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1673}
1674int git_config_get_pathname(const char *key, const char **dest)
1676{
1677 int ret;
1678 git_config_check_init();
1679 ret = git_configset_get_pathname(&the_config_set, key, dest);
1680 if (ret < 0)
1681 git_die_config(key, NULL);
1682 return ret;
1683}
1684int git_config_get_untracked_cache(void)
1686{
1687 int val = -1;
1688 const char *v;
1689 /* Hack for test programs like test-dump-untracked-cache */
1691 if (ignore_untracked_cache_config)
1692 return -1;
1693 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
1695 return val;
1696 if (!git_config_get_value("core.untrackedcache", &v)) {
1698 if (!strcasecmp(v, "keep"))
1699 return -1;
1700 error("unknown core.untrackedCache value '%s'; "
1702 "using 'keep' default value", v);
1703 return -1;
1704 }
1705 return -1; /* default value */
1707}
1708NORETURN
1710void git_die_config_linenr(const char *key, const char *filename, int linenr)
1711{
1712 if (!filename)
1713 die(_("unable to parse '%s' from command-line config"), key);
1714 else
1715 die(_("bad config variable '%s' in file '%s' at line %d"),
1716 key, filename, linenr);
1717}
1718NORETURN __attribute__((format(printf, 2, 3)))
1720void git_die_config(const char *key, const char *err, ...)
1721{
1722 const struct string_list *values;
1723 struct key_value_info *kv_info;
1724 if (err) {
1726 va_list params;
1727 va_start(params, err);
1728 vreportf("error: ", err, params);
1729 va_end(params);
1730 }
1731 values = git_config_get_value_multi(key);
1732 kv_info = values->items[values->nr - 1].util;
1733 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
1734}
1735/*
1737 * Find all the stuff for git_config_set() below.
1738 */
1739static struct {
1741 int baselen;
1742 char *key;
1743 int do_not_match;
1744 regex_t *value_regex;
1745 int multi_replace;
1746 size_t *offset;
1747 unsigned int offset_alloc;
1748 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
1749 int seen;
1750} store;
1751static int matches(const char *key, const char *value)
1753{
1754 if (strcmp(key, store.key))
1755 return 0; /* not ours */
1756 if (!store.value_regex)
1757 return 1; /* always matches */
1758 if (store.value_regex == CONFIG_REGEX_NONE)
1759 return 0; /* never matches */
1760 return store.do_not_match ^
1762 (value && !regexec(store.value_regex, value, 0, NULL, 0));
1763}
1764static int store_aux(const char *key, const char *value, void *cb)
1766{
1767 const char *ep;
1768 size_t section_len;
1769 switch (store.state) {
1771 case KEY_SEEN:
1772 if (matches(key, value)) {
1773 if (store.seen == 1 && store.multi_replace == 0) {
1774 warning(_("%s has multiple values"), key);
1775 }
1776 ALLOC_GROW(store.offset, store.seen + 1,
1778 store.offset_alloc);
1779 store.offset[store.seen] = cf->do_ftell(cf);
1781 store.seen++;
1782 }
1783 break;
1784 case SECTION_SEEN:
1785 /*
1786 * What we are looking for is in store.key (both
1787 * section and var), and its section part is baselen
1788 * long. We found key (again, both section and var).
1789 * We would want to know if this key is in the same
1790 * section as what we are looking for. We already
1791 * know we are in the same section as what should
1792 * hold store.key.
1793 */
1794 ep = strrchr(key, '.');
1795 section_len = ep - key;
1796 if ((section_len != store.baselen) ||
1798 memcmp(key, store.key, section_len+1)) {
1799 store.state = SECTION_END_SEEN;
1800 break;
1801 }
1802 /*
1804 * Do not increment matches: this is no match, but we
1805 * just made sure we are in the desired section.
1806 */
1807 ALLOC_GROW(store.offset, store.seen + 1,
1808 store.offset_alloc);
1809 store.offset[store.seen] = cf->do_ftell(cf);
1810 /* fallthru */
1811 case SECTION_END_SEEN:
1812 case START:
1813 if (matches(key, value)) {
1814 ALLOC_GROW(store.offset, store.seen + 1,
1815 store.offset_alloc);
1816 store.offset[store.seen] = cf->do_ftell(cf);
1817 store.state = KEY_SEEN;
1818 store.seen++;
1819 } else {
1820 if (strrchr(key, '.') - key == store.baselen &&
1821 !strncmp(key, store.key, store.baselen)) {
1822 store.state = SECTION_SEEN;
1823 ALLOC_GROW(store.offset,
1824 store.seen + 1,
1825 store.offset_alloc);
1826 store.offset[store.seen] = cf->do_ftell(cf);
1827 }
1828 }
1829 }
1830 return 0;
1831}
1832static int write_error(const char *filename)
1834{
1835 error("failed to write new configuration file %s", filename);
1836 /* Same error code as "failed to rename". */
1838 return 4;
1839}
1840static int store_write_section(int fd, const char *key)
1842{
1843 const char *dot;
1844 int i, success;
1845 struct strbuf sb = STRBUF_INIT;
1846 dot = memchr(key, '.', store.baselen);
1848 if (dot) {
1849 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1850 for (i = dot - key + 1; i < store.baselen; i++) {
1851 if (key[i] == '"' || key[i] == '\\')
1852 strbuf_addch(&sb, '\\');
1853 strbuf_addch(&sb, key[i]);
1854 }
1855 strbuf_addstr(&sb, "\"]\n");
1856 } else {
1857 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
1858 }
1859 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1861 strbuf_release(&sb);
1862 return success;
1864}
1865static int store_write_pair(int fd, const char *key, const char *value)
1867{
1868 int i, success;
1869 int length = strlen(key + store.baselen + 1);
1870 const char *quote = "";
1871 struct strbuf sb = STRBUF_INIT;
1872 /*
1874 * Check to see if the value needs to be surrounded with a dq pair.
1875 * Note that problematic characters are always backslash-quoted; this
1876 * check is about not losing leading or trailing SP and strings that
1877 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1878 * configuration parser.
1879 */
1880 if (value[0] == ' ')
1881 quote = "\"";
1882 for (i = 0; value[i]; i++)
1883 if (value[i] == ';' || value[i] == '#')
1884 quote = "\"";
1885 if (i && value[i - 1] == ' ')
1886 quote = "\"";
1887 strbuf_addf(&sb, "\t%.*s = %s",
1889 length, key + store.baselen + 1, quote);
1890 for (i = 0; value[i]; i++)
1892 switch (value[i]) {
1893 case '\n':
1894 strbuf_addstr(&sb, "\\n");
1895 break;
1896 case '\t':
1897 strbuf_addstr(&sb, "\\t");
1898 break;
1899 case '"':
1900 case '\\':
1901 strbuf_addch(&sb, '\\');
1902 default:
1903 strbuf_addch(&sb, value[i]);
1904 break;
1905 }
1906 strbuf_addf(&sb, "%s\n", quote);
1907 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1909 strbuf_release(&sb);
1910 return success;
1912}
1913static ssize_t find_beginning_of_line(const char *contents, size_t size,
1915 size_t offset_, int *found_bracket)
1916{
1917 size_t equal_offset = size, bracket_offset = size;
1918 ssize_t offset;
1919contline:
1921 for (offset = offset_-2; offset > 0
1922 && contents[offset] != '\n'; offset--)
1923 switch (contents[offset]) {
1924 case '=': equal_offset = offset; break;
1925 case ']': bracket_offset = offset; break;
1926 }
1927 if (offset > 0 && contents[offset-1] == '\\') {
1928 offset_ = offset;
1929 goto contline;
1930 }
1931 if (bracket_offset < equal_offset) {
1932 *found_bracket = 1;
1933 offset = bracket_offset+1;
1934 } else
1935 offset++;
1936 return offset;
1938}
1939int git_config_set_in_file_gently(const char *config_filename,
1941 const char *key, const char *value)
1942{
1943 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
1944}
1945void git_config_set_in_file(const char *config_filename,
1947 const char *key, const char *value)
1948{
1949 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
1950}
1951int git_config_set_gently(const char *key, const char *value)
1953{
1954 return git_config_set_multivar_gently(key, value, NULL, 0);
1955}
1956void git_config_set(const char *key, const char *value)
1958{
1959 git_config_set_multivar(key, value, NULL, 0);
1960}
1961/*
1963 * Auxiliary function to sanity-check and split the key into the section
1964 * identifier and variable name.
1965 *
1966 * Returns 0 on success, -1 when there is an invalid character in the key and
1967 * -2 if there is no section name in the key.
1968 *
1969 * store_key - pointer to char* which will hold a copy of the key with
1970 * lowercase section and variable name
1971 * baselen - pointer to int which will hold the length of the
1972 * section + subsection part, can be NULL
1973 */
1974static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
1975{
1976 int i, dot, baselen;
1977 const char *last_dot = strrchr(key, '.');
1978 /*
1980 * Since "key" actually contains the section name and the real
1981 * key name separated by a dot, we have to know where the dot is.
1982 */
1983 if (last_dot == NULL || last_dot == key) {
1985 if (!quiet)
1986 error("key does not contain a section: %s", key);
1987 return -CONFIG_NO_SECTION_OR_NAME;
1988 }
1989 if (!last_dot[1]) {
1991 if (!quiet)
1992 error("key does not contain variable name: %s", key);
1993 return -CONFIG_NO_SECTION_OR_NAME;
1994 }
1995 baselen = last_dot - key;
1997 if (baselen_)
1998 *baselen_ = baselen;
1999 /*
2001 * Validate the key and while at it, lower case it for matching.
2002 */
2003 if (store_key)
2004 *store_key = xmallocz(strlen(key));
2005 dot = 0;
2007 for (i = 0; key[i]; i++) {
2008 unsigned char c = key[i];
2009 if (c == '.')
2010 dot = 1;
2011 /* Leave the extended basename untouched.. */
2012 if (!dot || i > baselen) {
2013 if (!iskeychar(c) ||
2014 (i == baselen + 1 && !isalpha(c))) {
2015 if (!quiet)
2016 error("invalid key: %s", key);
2017 goto out_free_ret_1;
2018 }
2019 c = tolower(c);
2020 } else if (c == '\n') {
2021 if (!quiet)
2022 error("invalid key (newline): %s", key);
2023 goto out_free_ret_1;
2024 }
2025 if (store_key)
2026 (*store_key)[i] = c;
2027 }
2028 return 0;
2030out_free_ret_1:
2032 if (store_key) {
2033 free(*store_key);
2034 *store_key = NULL;
2035 }
2036 return -CONFIG_INVALID_KEY;
2037}
2038int git_config_parse_key(const char *key, char **store_key, int *baselen)
2040{
2041 return git_config_parse_key_1(key, store_key, baselen, 0);
2042}
2043int git_config_key_is_valid(const char *key)
2045{
2046 return !git_config_parse_key_1(key, NULL, NULL, 1);
2047}
2048/*
2050 * If value==NULL, unset in (remove from) config,
2051 * if value_regex!=NULL, disregard key/value pairs where value does not match.
2052 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2053 * (only add a new one)
2054 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2055 * else all matching key/values (regardless how many) are removed,
2056 * before the new pair is written.
2057 *
2058 * Returns 0 on success.
2059 *
2060 * This function does this:
2061 *
2062 * - it locks the config file by creating ".git/config.lock"
2063 *
2064 * - it then parses the config using store_aux() as validator to find
2065 * the position on the key/value pair to replace. If it is to be unset,
2066 * it must be found exactly once.
2067 *
2068 * - the config file is mmap()ed and the part before the match (if any) is
2069 * written to the lock file, then the changed part and the rest.
2070 *
2071 * - the config file is removed and the lock file rename()d to it.
2072 *
2073 */
2074int git_config_set_multivar_in_file_gently(const char *config_filename,
2075 const char *key, const char *value,
2076 const char *value_regex,
2077 int multi_replace)
2078{
2079 int fd = -1, in_fd = -1;
2080 int ret;
2081 struct lock_file *lock = NULL;
2082 char *filename_buf = NULL;
2083 char *contents = NULL;
2084 size_t contents_sz;
2085 /* parse-key returns negative; flip the sign to feed exit(3) */
2087 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2088 if (ret)
2089 goto out_free;
2090 store.multi_replace = multi_replace;
2092 if (!config_filename)
2094 config_filename = filename_buf = git_pathdup("config");
2095 /*
2097 * The lock serves a purpose in addition to locking: the new
2098 * contents of .git/config will be written into it.
2099 */
2100 lock = xcalloc(1, sizeof(struct lock_file));
2101 fd = hold_lock_file_for_update(lock, config_filename, 0);
2102 if (fd < 0) {
2103 error_errno("could not lock config file %s", config_filename);
2104 free(store.key);
2105 ret = CONFIG_NO_LOCK;
2106 goto out_free;
2107 }
2108 /*
2110 * If .git/config does not exist yet, write a minimal version.
2111 */
2112 in_fd = open(config_filename, O_RDONLY);
2113 if ( in_fd < 0 ) {
2114 free(store.key);
2115 if ( ENOENT != errno ) {
2117 error_errno("opening %s", config_filename);
2118 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
2119 goto out_free;
2120 }
2121 /* if nothing to unset, error out */
2122 if (value == NULL) {
2123 ret = CONFIG_NOTHING_SET;
2124 goto out_free;
2125 }
2126 store.key = (char *)key;
2128 if (!store_write_section(fd, key) ||
2129 !store_write_pair(fd, key, value))
2130 goto write_err_out;
2131 } else {
2132 struct stat st;
2133 size_t copy_begin, copy_end;
2134 int i, new_line = 0;
2135 if (value_regex == NULL)
2137 store.value_regex = NULL;
2138 else if (value_regex == CONFIG_REGEX_NONE)
2139 store.value_regex = CONFIG_REGEX_NONE;
2140 else {
2141 if (value_regex[0] == '!') {
2142 store.do_not_match = 1;
2143 value_regex++;
2144 } else
2145 store.do_not_match = 0;
2146 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
2148 if (regcomp(store.value_regex, value_regex,
2149 REG_EXTENDED)) {
2150 error("invalid pattern: %s", value_regex);
2151 free(store.value_regex);
2152 ret = CONFIG_INVALID_PATTERN;
2153 goto out_free;
2154 }
2155 }
2156 ALLOC_GROW(store.offset, 1, store.offset_alloc);
2158 store.offset[0] = 0;
2159 store.state = START;
2160 store.seen = 0;
2161 /*
2163 * After this, store.offset will contain the *end* offset
2164 * of the last match, or remain at 0 if no match was found.
2165 * As a side effect, we make sure to transform only a valid
2166 * existing config file.
2167 */
2168 if (git_config_from_file(store_aux, config_filename, NULL)) {
2169 error("invalid config file %s", config_filename);
2170 free(store.key);
2171 if (store.value_regex != NULL &&
2172 store.value_regex != CONFIG_REGEX_NONE) {
2173 regfree(store.value_regex);
2174 free(store.value_regex);
2175 }
2176 ret = CONFIG_INVALID_FILE;
2177 goto out_free;
2178 }
2179 free(store.key);
2181 if (store.value_regex != NULL &&
2182 store.value_regex != CONFIG_REGEX_NONE) {
2183 regfree(store.value_regex);
2184 free(store.value_regex);
2185 }
2186 /* if nothing to unset, or too many matches, error out */
2188 if ((store.seen == 0 && value == NULL) ||
2189 (store.seen > 1 && multi_replace == 0)) {
2190 ret = CONFIG_NOTHING_SET;
2191 goto out_free;
2192 }
2193 fstat(in_fd, &st);
2195 contents_sz = xsize_t(st.st_size);
2196 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2197 MAP_PRIVATE, in_fd, 0);
2198 if (contents == MAP_FAILED) {
2199 if (errno == ENODEV && S_ISDIR(st.st_mode))
2200 errno = EISDIR;
2201 error_errno("unable to mmap '%s'", config_filename);
2202 ret = CONFIG_INVALID_FILE;
2203 contents = NULL;
2204 goto out_free;
2205 }
2206 close(in_fd);
2207 in_fd = -1;
2208 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2210 error_errno("chmod on %s failed", get_lock_file_path(lock));
2211 ret = CONFIG_NO_WRITE;
2212 goto out_free;
2213 }
2214 if (store.seen == 0)
2216 store.seen = 1;
2217 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2219 if (store.offset[i] == 0) {
2220 store.offset[i] = copy_end = contents_sz;
2221 } else if (store.state != KEY_SEEN) {
2222 copy_end = store.offset[i];
2223 } else
2224 copy_end = find_beginning_of_line(
2225 contents, contents_sz,
2226 store.offset[i]-2, &new_line);
2227 if (copy_end > 0 && contents[copy_end-1] != '\n')
2229 new_line = 1;
2230 /* write the first part of the config */
2232 if (copy_end > copy_begin) {
2233 if (write_in_full(fd, contents + copy_begin,
2234 copy_end - copy_begin) <
2235 copy_end - copy_begin)
2236 goto write_err_out;
2237 if (new_line &&
2238 write_str_in_full(fd, "\n") != 1)
2239 goto write_err_out;
2240 }
2241 copy_begin = store.offset[i];
2242 }
2243 /* write the pair (value == NULL means unset) */
2245 if (value != NULL) {
2246 if (store.state == START) {
2247 if (!store_write_section(fd, key))
2248 goto write_err_out;
2249 }
2250 if (!store_write_pair(fd, key, value))
2251 goto write_err_out;
2252 }
2253 /* write the rest of the config */
2255 if (copy_begin < contents_sz)
2256 if (write_in_full(fd, contents + copy_begin,
2257 contents_sz - copy_begin) <
2258 contents_sz - copy_begin)
2259 goto write_err_out;
2260 munmap(contents, contents_sz);
2262 contents = NULL;
2263 }
2264 if (commit_lock_file(lock) < 0) {
2266 error_errno("could not write config file %s", config_filename);
2267 ret = CONFIG_NO_WRITE;
2268 lock = NULL;
2269 goto out_free;
2270 }
2271 /*
2273 * lock is committed, so don't try to roll it back below.
2274 * NOTE: Since lockfile.c keeps a linked list of all created
2275 * lock_file structures, it isn't safe to free(lock). It's
2276 * better to just leave it hanging around.
2277 */
2278 lock = NULL;
2279 ret = 0;
2280 /* Invalidate the config cache */
2282 git_config_clear();
2283out_free:
2285 if (lock)
2286 rollback_lock_file(lock);
2287 free(filename_buf);
2288 if (contents)
2289 munmap(contents, contents_sz);
2290 if (in_fd >= 0)
2291 close(in_fd);
2292 return ret;
2293write_err_out:
2295 ret = write_error(get_lock_file_path(lock));
2296 goto out_free;
2297}
2299void git_config_set_multivar_in_file(const char *config_filename,
2301 const char *key, const char *value,
2302 const char *value_regex, int multi_replace)
2303{
2304 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2305 value_regex, multi_replace))
2306 return;
2307 if (value)
2308 die(_("could not set '%s' to '%s'"), key, value);
2309 else
2310 die(_("could not unset '%s'"), key);
2311}
2312int git_config_set_multivar_gently(const char *key, const char *value,
2314 const char *value_regex, int multi_replace)
2315{
2316 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2317 multi_replace);
2318}
2319void git_config_set_multivar(const char *key, const char *value,
2321 const char *value_regex, int multi_replace)
2322{
2323 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2324 multi_replace);
2325}
2326static int section_name_match (const char *buf, const char *name)
2328{
2329 int i = 0, j = 0, dot = 0;
2330 if (buf[i] != '[')
2331 return 0;
2332 for (i = 1; buf[i] && buf[i] != ']'; i++) {
2333 if (!dot && isspace(buf[i])) {
2334 dot = 1;
2335 if (name[j++] != '.')
2336 break;
2337 for (i++; isspace(buf[i]); i++)
2338 ; /* do nothing */
2339 if (buf[i] != '"')
2340 break;
2341 continue;
2342 }
2343 if (buf[i] == '\\' && dot)
2344 i++;
2345 else if (buf[i] == '"' && dot) {
2346 for (i++; isspace(buf[i]); i++)
2347 ; /* do_nothing */
2348 break;
2349 }
2350 if (buf[i] != name[j++])
2351 break;
2352 }
2353 if (buf[i] == ']' && name[j] == 0) {
2354 /*
2355 * We match, now just find the right length offset by
2356 * gobbling up any whitespace after it, as well
2357 */
2358 i++;
2359 for (; buf[i] && isspace(buf[i]); i++)
2360 ; /* do nothing */
2361 return i;
2362 }
2363 return 0;
2364}
2365static int section_name_is_ok(const char *name)
2367{
2368 /* Empty section names are bogus. */
2369 if (!*name)
2370 return 0;
2371 /*
2373 * Before a dot, we must be alphanumeric or dash. After the first dot,
2374 * anything goes, so we can stop checking.
2375 */
2376 for (; *name && *name != '.'; name++)
2377 if (*name != '-' && !isalnum(*name))
2378 return 0;
2379 return 1;
2380}
2381/* if new_name == NULL, the section is removed instead */
2383int git_config_rename_section_in_file(const char *config_filename,
2384 const char *old_name, const char *new_name)
2385{
2386 int ret = 0, remove = 0;
2387 char *filename_buf = NULL;
2388 struct lock_file *lock;
2389 int out_fd;
2390 char buf[1024];
2391 FILE *config_file;
2392 struct stat st;
2393 if (new_name && !section_name_is_ok(new_name)) {
2395 ret = error("invalid section name: %s", new_name);
2396 goto out;
2397 }
2398 if (!config_filename)
2400 config_filename = filename_buf = git_pathdup("config");
2401 lock = xcalloc(1, sizeof(struct lock_file));
2403 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
2404 if (out_fd < 0) {
2405 ret = error("could not lock config file %s", config_filename);
2406 goto out;
2407 }
2408 if (!(config_file = fopen(config_filename, "rb"))) {
2410 /* no config file means nothing to rename, no error */
2411 goto unlock_and_out;
2412 }
2413 fstat(fileno(config_file), &st);
2415 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2417 ret = error_errno("chmod on %s failed",
2418 get_lock_file_path(lock));
2419 goto out;
2420 }
2421 while (fgets(buf, sizeof(buf), config_file)) {
2423 int i;
2424 int length;
2425 char *output = buf;
2426 for (i = 0; buf[i] && isspace(buf[i]); i++)
2427 ; /* do nothing */
2428 if (buf[i] == '[') {
2429 /* it's a section */
2430 int offset = section_name_match(&buf[i], old_name);
2431 if (offset > 0) {
2432 ret++;
2433 if (new_name == NULL) {
2434 remove = 1;
2435 continue;
2436 }
2437 store.baselen = strlen(new_name);
2438 if (!store_write_section(out_fd, new_name)) {
2439 ret = write_error(get_lock_file_path(lock));
2440 goto out;
2441 }
2442 /*
2443 * We wrote out the new section, with
2444 * a newline, now skip the old
2445 * section's length
2446 */
2447 output += offset + i;
2448 if (strlen(output) > 0) {
2449 /*
2450 * More content means there's
2451 * a declaration to put on the
2452 * next line; indent with a
2453 * tab
2454 */
2455 output -= 1;
2456 output[0] = '\t';
2457 }
2458 }
2459 remove = 0;
2460 }
2461 if (remove)
2462 continue;
2463 length = strlen(output);
2464 if (write_in_full(out_fd, output, length) != length) {
2465 ret = write_error(get_lock_file_path(lock));
2466 goto out;
2467 }
2468 }
2469 fclose(config_file);
2470unlock_and_out:
2471 if (commit_lock_file(lock) < 0)
2472 ret = error_errno("could not write config file %s",
2473 config_filename);
2474out:
2475 free(filename_buf);
2476 return ret;
2477}
2478int git_config_rename_section(const char *old_name, const char *new_name)
2480{
2481 return git_config_rename_section_in_file(NULL, old_name, new_name);
2482}
2483/*
2485 * Call this to report error for your variable that should not
2486 * get a boolean value (i.e. "[my] var" means "true").
2487 */
2488#undef config_error_nonbool
2489int config_error_nonbool(const char *var)
2490{
2491 return error("missing value for '%s'", var);
2492}
2493int parse_config_key(const char *var,
2495 const char *section,
2496 const char **subsection, int *subsection_len,
2497 const char **key)
2498{
2499 int section_len = strlen(section);
2500 const char *dot;
2501 /* Does it start with "section." ? */
2503 if (!starts_with(var, section) || var[section_len] != '.')
2504 return -1;
2505 /*
2507 * Find the key; we don't know yet if we have a subsection, but we must
2508 * parse backwards from the end, since the subsection may have dots in
2509 * it, too.
2510 */
2511 dot = strrchr(var, '.');
2512 *key = dot + 1;
2513 /* Did we have a subsection at all? */
2515 if (dot == var + section_len) {
2516 *subsection = NULL;
2517 *subsection_len = 0;
2518 }
2519 else {
2520 *subsection = var + section_len + 1;
2521 *subsection_len = dot - *subsection;
2522 }
2523 return 0;
2525}
2526const char *current_config_origin_type(void)
2528{
2529 int type;
2530 if (current_config_kvi)
2531 type = current_config_kvi->origin_type;
2532 else if(cf)
2533 type = cf->origin_type;
2534 else
2535 die("BUG: current_config_origin_type called outside config callback");
2536 switch (type) {
2538 case CONFIG_ORIGIN_BLOB:
2539 return "blob";
2540 case CONFIG_ORIGIN_FILE:
2541 return "file";
2542 case CONFIG_ORIGIN_STDIN:
2543 return "standard input";
2544 case CONFIG_ORIGIN_SUBMODULE_BLOB:
2545 return "submodule-blob";
2546 case CONFIG_ORIGIN_CMDLINE:
2547 return "command line";
2548 default:
2549 die("BUG: unknown config origin type");
2550 }
2551}
2552const char *current_config_name(void)
2554{
2555 const char *name;
2556 if (current_config_kvi)
2557 name = current_config_kvi->filename;
2558 else if (cf)
2559 name = cf->name;
2560 else
2561 die("BUG: current_config_name called outside config callback");
2562 return name ? name : "";
2563}
2564enum config_scope current_config_scope(void)
2566{
2567 if (current_config_kvi)
2568 return current_config_kvi->scope;
2569 else
2570 return current_parsing_scope;
2571}