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config: reject bogus values for core.checkstat
[thirdparty/git.git] / config.c
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 "git-compat-util.h"
9 #include "abspath.h"
10 #include "advice.h"
11 #include "date.h"
12 #include "branch.h"
13 #include "config.h"
14 #include "parse.h"
15 #include "convert.h"
16 #include "environment.h"
17 #include "gettext.h"
18 #include "ident.h"
19 #include "repository.h"
20 #include "lockfile.h"
21 #include "mailmap.h"
22 #include "attr.h"
23 #include "exec-cmd.h"
24 #include "strbuf.h"
25 #include "quote.h"
26 #include "hashmap.h"
27 #include "string-list.h"
28 #include "object-name.h"
29 #include "object-store-ll.h"
30 #include "pager.h"
31 #include "path.h"
32 #include "utf8.h"
33 #include "dir.h"
34 #include "color.h"
35 #include "replace-object.h"
36 #include "refs.h"
37 #include "setup.h"
38 #include "strvec.h"
39 #include "trace2.h"
40 #include "wildmatch.h"
41 #include "worktree.h"
42 #include "ws.h"
43 #include "write-or-die.h"
44
45 struct config_source {
46 struct config_source *prev;
47 union {
48 FILE *file;
49 struct config_buf {
50 const char *buf;
51 size_t len;
52 size_t pos;
53 } buf;
54 } u;
55 enum config_origin_type origin_type;
56 const char *name;
57 const char *path;
58 enum config_error_action default_error_action;
59 int linenr;
60 int eof;
61 size_t total_len;
62 struct strbuf value;
63 struct strbuf var;
64 unsigned subsection_case_sensitive : 1;
65
66 int (*do_fgetc)(struct config_source *c);
67 int (*do_ungetc)(int c, struct config_source *conf);
68 long (*do_ftell)(struct config_source *c);
69 };
70 #define CONFIG_SOURCE_INIT { 0 }
71
72 static int pack_compression_seen;
73 static int zlib_compression_seen;
74
75 /*
76 * Config that comes from trusted scopes, namely:
77 * - CONFIG_SCOPE_SYSTEM (e.g. /etc/gitconfig)
78 * - CONFIG_SCOPE_GLOBAL (e.g. $HOME/.gitconfig, $XDG_CONFIG_HOME/git)
79 * - CONFIG_SCOPE_COMMAND (e.g. "-c" option, environment variables)
80 *
81 * This is declared here for code cleanliness, but unlike the other
82 * static variables, this does not hold config parser state.
83 */
84 static struct config_set protected_config;
85
86 static int config_file_fgetc(struct config_source *conf)
87 {
88 return getc_unlocked(conf->u.file);
89 }
90
91 static int config_file_ungetc(int c, struct config_source *conf)
92 {
93 return ungetc(c, conf->u.file);
94 }
95
96 static long config_file_ftell(struct config_source *conf)
97 {
98 return ftell(conf->u.file);
99 }
100
101
102 static int config_buf_fgetc(struct config_source *conf)
103 {
104 if (conf->u.buf.pos < conf->u.buf.len)
105 return conf->u.buf.buf[conf->u.buf.pos++];
106
107 return EOF;
108 }
109
110 static int config_buf_ungetc(int c, struct config_source *conf)
111 {
112 if (conf->u.buf.pos > 0) {
113 conf->u.buf.pos--;
114 if (conf->u.buf.buf[conf->u.buf.pos] != c)
115 BUG("config_buf can only ungetc the same character");
116 return c;
117 }
118
119 return EOF;
120 }
121
122 static long config_buf_ftell(struct config_source *conf)
123 {
124 return conf->u.buf.pos;
125 }
126
127 struct config_include_data {
128 int depth;
129 config_fn_t fn;
130 void *data;
131 const struct config_options *opts;
132 struct git_config_source *config_source;
133 struct repository *repo;
134
135 /*
136 * All remote URLs discovered when reading all config files.
137 */
138 struct string_list *remote_urls;
139 };
140 #define CONFIG_INCLUDE_INIT { 0 }
141
142 static int git_config_include(const char *var, const char *value,
143 const struct config_context *ctx, void *data);
144
145 #define MAX_INCLUDE_DEPTH 10
146 static const char include_depth_advice[] = N_(
147 "exceeded maximum include depth (%d) while including\n"
148 " %s\n"
149 "from\n"
150 " %s\n"
151 "This might be due to circular includes.");
152 static int handle_path_include(const struct key_value_info *kvi,
153 const char *path,
154 struct config_include_data *inc)
155 {
156 int ret = 0;
157 struct strbuf buf = STRBUF_INIT;
158 char *expanded;
159
160 if (!path)
161 return config_error_nonbool("include.path");
162
163 expanded = interpolate_path(path, 0);
164 if (!expanded)
165 return error(_("could not expand include path '%s'"), path);
166 path = expanded;
167
168 /*
169 * Use an absolute path as-is, but interpret relative paths
170 * based on the including config file.
171 */
172 if (!is_absolute_path(path)) {
173 char *slash;
174
175 if (!kvi || !kvi->path) {
176 ret = error(_("relative config includes must come from files"));
177 goto cleanup;
178 }
179
180 slash = find_last_dir_sep(kvi->path);
181 if (slash)
182 strbuf_add(&buf, kvi->path, slash - kvi->path + 1);
183 strbuf_addstr(&buf, path);
184 path = buf.buf;
185 }
186
187 if (!access_or_die(path, R_OK, 0)) {
188 if (++inc->depth > MAX_INCLUDE_DEPTH)
189 die(_(include_depth_advice), MAX_INCLUDE_DEPTH, path,
190 !kvi ? "<unknown>" :
191 kvi->filename ? kvi->filename :
192 "the command line");
193 ret = git_config_from_file_with_options(git_config_include, path, inc,
194 kvi->scope, NULL);
195 inc->depth--;
196 }
197 cleanup:
198 strbuf_release(&buf);
199 free(expanded);
200 return ret;
201 }
202
203 static void add_trailing_starstar_for_dir(struct strbuf *pat)
204 {
205 if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
206 strbuf_addstr(pat, "**");
207 }
208
209 static int prepare_include_condition_pattern(const struct key_value_info *kvi,
210 struct strbuf *pat)
211 {
212 struct strbuf path = STRBUF_INIT;
213 char *expanded;
214 int prefix = 0;
215
216 expanded = interpolate_path(pat->buf, 1);
217 if (expanded) {
218 strbuf_reset(pat);
219 strbuf_addstr(pat, expanded);
220 free(expanded);
221 }
222
223 if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
224 const char *slash;
225
226 if (!kvi || !kvi->path)
227 return error(_("relative config include "
228 "conditionals must come from files"));
229
230 strbuf_realpath(&path, kvi->path, 1);
231 slash = find_last_dir_sep(path.buf);
232 if (!slash)
233 BUG("how is this possible?");
234 strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
235 prefix = slash - path.buf + 1 /* slash */;
236 } else if (!is_absolute_path(pat->buf))
237 strbuf_insertstr(pat, 0, "**/");
238
239 add_trailing_starstar_for_dir(pat);
240
241 strbuf_release(&path);
242 return prefix;
243 }
244
245 static int include_by_gitdir(const struct key_value_info *kvi,
246 const struct config_options *opts,
247 const char *cond, size_t cond_len, int icase)
248 {
249 struct strbuf text = STRBUF_INIT;
250 struct strbuf pattern = STRBUF_INIT;
251 int ret = 0, prefix;
252 const char *git_dir;
253 int already_tried_absolute = 0;
254
255 if (opts->git_dir)
256 git_dir = opts->git_dir;
257 else
258 goto done;
259
260 strbuf_realpath(&text, git_dir, 1);
261 strbuf_add(&pattern, cond, cond_len);
262 prefix = prepare_include_condition_pattern(kvi, &pattern);
263
264 again:
265 if (prefix < 0)
266 goto done;
267
268 if (prefix > 0) {
269 /*
270 * perform literal matching on the prefix part so that
271 * any wildcard character in it can't create side effects.
272 */
273 if (text.len < prefix)
274 goto done;
275 if (!icase && strncmp(pattern.buf, text.buf, prefix))
276 goto done;
277 if (icase && strncasecmp(pattern.buf, text.buf, prefix))
278 goto done;
279 }
280
281 ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
282 WM_PATHNAME | (icase ? WM_CASEFOLD : 0));
283
284 if (!ret && !already_tried_absolute) {
285 /*
286 * We've tried e.g. matching gitdir:~/work, but if
287 * ~/work is a symlink to /mnt/storage/work
288 * strbuf_realpath() will expand it, so the rule won't
289 * match. Let's match against a
290 * strbuf_add_absolute_path() version of the path,
291 * which'll do the right thing
292 */
293 strbuf_reset(&text);
294 strbuf_add_absolute_path(&text, git_dir);
295 already_tried_absolute = 1;
296 goto again;
297 }
298 done:
299 strbuf_release(&pattern);
300 strbuf_release(&text);
301 return ret;
302 }
303
304 static int include_by_branch(const char *cond, size_t cond_len)
305 {
306 int flags;
307 int ret;
308 struct strbuf pattern = STRBUF_INIT;
309 const char *refname = !the_repository->gitdir ?
310 NULL : resolve_ref_unsafe("HEAD", 0, NULL, &flags);
311 const char *shortname;
312
313 if (!refname || !(flags & REF_ISSYMREF) ||
314 !skip_prefix(refname, "refs/heads/", &shortname))
315 return 0;
316
317 strbuf_add(&pattern, cond, cond_len);
318 add_trailing_starstar_for_dir(&pattern);
319 ret = !wildmatch(pattern.buf, shortname, WM_PATHNAME);
320 strbuf_release(&pattern);
321 return ret;
322 }
323
324 static int add_remote_url(const char *var, const char *value,
325 const struct config_context *ctx UNUSED, void *data)
326 {
327 struct string_list *remote_urls = data;
328 const char *remote_name;
329 size_t remote_name_len;
330 const char *key;
331
332 if (!parse_config_key(var, "remote", &remote_name, &remote_name_len,
333 &key) &&
334 remote_name &&
335 !strcmp(key, "url"))
336 string_list_append(remote_urls, value);
337 return 0;
338 }
339
340 static void populate_remote_urls(struct config_include_data *inc)
341 {
342 struct config_options opts;
343
344 opts = *inc->opts;
345 opts.unconditional_remote_url = 1;
346
347 inc->remote_urls = xmalloc(sizeof(*inc->remote_urls));
348 string_list_init_dup(inc->remote_urls);
349 config_with_options(add_remote_url, inc->remote_urls,
350 inc->config_source, inc->repo, &opts);
351 }
352
353 static int forbid_remote_url(const char *var, const char *value UNUSED,
354 const struct config_context *ctx UNUSED,
355 void *data UNUSED)
356 {
357 const char *remote_name;
358 size_t remote_name_len;
359 const char *key;
360
361 if (!parse_config_key(var, "remote", &remote_name, &remote_name_len,
362 &key) &&
363 remote_name &&
364 !strcmp(key, "url"))
365 die(_("remote URLs cannot be configured in file directly or indirectly included by includeIf.hasconfig:remote.*.url"));
366 return 0;
367 }
368
369 static int at_least_one_url_matches_glob(const char *glob, int glob_len,
370 struct string_list *remote_urls)
371 {
372 struct strbuf pattern = STRBUF_INIT;
373 struct string_list_item *url_item;
374 int found = 0;
375
376 strbuf_add(&pattern, glob, glob_len);
377 for_each_string_list_item(url_item, remote_urls) {
378 if (!wildmatch(pattern.buf, url_item->string, WM_PATHNAME)) {
379 found = 1;
380 break;
381 }
382 }
383 strbuf_release(&pattern);
384 return found;
385 }
386
387 static int include_by_remote_url(struct config_include_data *inc,
388 const char *cond, size_t cond_len)
389 {
390 if (inc->opts->unconditional_remote_url)
391 return 1;
392 if (!inc->remote_urls)
393 populate_remote_urls(inc);
394 return at_least_one_url_matches_glob(cond, cond_len,
395 inc->remote_urls);
396 }
397
398 static int include_condition_is_true(const struct key_value_info *kvi,
399 struct config_include_data *inc,
400 const char *cond, size_t cond_len)
401 {
402 const struct config_options *opts = inc->opts;
403
404 if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
405 return include_by_gitdir(kvi, opts, cond, cond_len, 0);
406 else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
407 return include_by_gitdir(kvi, opts, cond, cond_len, 1);
408 else if (skip_prefix_mem(cond, cond_len, "onbranch:", &cond, &cond_len))
409 return include_by_branch(cond, cond_len);
410 else if (skip_prefix_mem(cond, cond_len, "hasconfig:remote.*.url:", &cond,
411 &cond_len))
412 return include_by_remote_url(inc, cond, cond_len);
413
414 /* unknown conditionals are always false */
415 return 0;
416 }
417
418 static int git_config_include(const char *var, const char *value,
419 const struct config_context *ctx,
420 void *data)
421 {
422 struct config_include_data *inc = data;
423 const char *cond, *key;
424 size_t cond_len;
425 int ret;
426
427 /*
428 * Pass along all values, including "include" directives; this makes it
429 * possible to query information on the includes themselves.
430 */
431 ret = inc->fn(var, value, ctx, inc->data);
432 if (ret < 0)
433 return ret;
434
435 if (!strcmp(var, "include.path"))
436 ret = handle_path_include(ctx->kvi, value, inc);
437
438 if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
439 cond && include_condition_is_true(ctx->kvi, inc, cond, cond_len) &&
440 !strcmp(key, "path")) {
441 config_fn_t old_fn = inc->fn;
442
443 if (inc->opts->unconditional_remote_url)
444 inc->fn = forbid_remote_url;
445 ret = handle_path_include(ctx->kvi, value, inc);
446 inc->fn = old_fn;
447 }
448
449 return ret;
450 }
451
452 static void git_config_push_split_parameter(const char *key, const char *value)
453 {
454 struct strbuf env = STRBUF_INIT;
455 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
456 if (old && *old) {
457 strbuf_addstr(&env, old);
458 strbuf_addch(&env, ' ');
459 }
460 sq_quote_buf(&env, key);
461 strbuf_addch(&env, '=');
462 if (value)
463 sq_quote_buf(&env, value);
464 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
465 strbuf_release(&env);
466 }
467
468 void git_config_push_parameter(const char *text)
469 {
470 const char *value;
471
472 /*
473 * When we see:
474 *
475 * section.subsection=with=equals.key=value
476 *
477 * we cannot tell if it means:
478 *
479 * [section "subsection=with=equals"]
480 * key = value
481 *
482 * or:
483 *
484 * [section]
485 * subsection = with=equals.key=value
486 *
487 * We parse left-to-right for the first "=", meaning we'll prefer to
488 * keep the value intact over the subsection. This is historical, but
489 * also sensible since values are more likely to contain odd or
490 * untrusted input than a section name.
491 *
492 * A missing equals is explicitly allowed (as a bool-only entry).
493 */
494 value = strchr(text, '=');
495 if (value) {
496 char *key = xmemdupz(text, value - text);
497 git_config_push_split_parameter(key, value + 1);
498 free(key);
499 } else {
500 git_config_push_split_parameter(text, NULL);
501 }
502 }
503
504 void git_config_push_env(const char *spec)
505 {
506 char *key;
507 const char *env_name;
508 const char *env_value;
509
510 env_name = strrchr(spec, '=');
511 if (!env_name)
512 die(_("invalid config format: %s"), spec);
513 key = xmemdupz(spec, env_name - spec);
514 env_name++;
515 if (!*env_name)
516 die(_("missing environment variable name for configuration '%.*s'"),
517 (int)(env_name - spec - 1), spec);
518
519 env_value = getenv(env_name);
520 if (!env_value)
521 die(_("missing environment variable '%s' for configuration '%.*s'"),
522 env_name, (int)(env_name - spec - 1), spec);
523
524 git_config_push_split_parameter(key, env_value);
525 free(key);
526 }
527
528 static inline int iskeychar(int c)
529 {
530 return isalnum(c) || c == '-';
531 }
532
533 /*
534 * Auxiliary function to sanity-check and split the key into the section
535 * identifier and variable name.
536 *
537 * Returns 0 on success, -1 when there is an invalid character in the key and
538 * -2 if there is no section name in the key.
539 *
540 * store_key - pointer to char* which will hold a copy of the key with
541 * lowercase section and variable name
542 * baselen - pointer to size_t which will hold the length of the
543 * section + subsection part, can be NULL
544 */
545 int git_config_parse_key(const char *key, char **store_key, size_t *baselen_)
546 {
547 size_t i, baselen;
548 int dot;
549 const char *last_dot = strrchr(key, '.');
550
551 /*
552 * Since "key" actually contains the section name and the real
553 * key name separated by a dot, we have to know where the dot is.
554 */
555
556 if (last_dot == NULL || last_dot == key) {
557 error(_("key does not contain a section: %s"), key);
558 return -CONFIG_NO_SECTION_OR_NAME;
559 }
560
561 if (!last_dot[1]) {
562 error(_("key does not contain variable name: %s"), key);
563 return -CONFIG_NO_SECTION_OR_NAME;
564 }
565
566 baselen = last_dot - key;
567 if (baselen_)
568 *baselen_ = baselen;
569
570 /*
571 * Validate the key and while at it, lower case it for matching.
572 */
573 *store_key = xmallocz(strlen(key));
574
575 dot = 0;
576 for (i = 0; key[i]; i++) {
577 unsigned char c = key[i];
578 if (c == '.')
579 dot = 1;
580 /* Leave the extended basename untouched.. */
581 if (!dot || i > baselen) {
582 if (!iskeychar(c) ||
583 (i == baselen + 1 && !isalpha(c))) {
584 error(_("invalid key: %s"), key);
585 goto out_free_ret_1;
586 }
587 c = tolower(c);
588 } else if (c == '\n') {
589 error(_("invalid key (newline): %s"), key);
590 goto out_free_ret_1;
591 }
592 (*store_key)[i] = c;
593 }
594
595 return 0;
596
597 out_free_ret_1:
598 FREE_AND_NULL(*store_key);
599 return -CONFIG_INVALID_KEY;
600 }
601
602 static int config_parse_pair(const char *key, const char *value,
603 struct key_value_info *kvi,
604 config_fn_t fn, void *data)
605 {
606 char *canonical_name;
607 int ret;
608 struct config_context ctx = {
609 .kvi = kvi,
610 };
611
612 if (!strlen(key))
613 return error(_("empty config key"));
614 if (git_config_parse_key(key, &canonical_name, NULL))
615 return -1;
616
617 ret = (fn(canonical_name, value, &ctx, data) < 0) ? -1 : 0;
618 free(canonical_name);
619 return ret;
620 }
621
622
623 /* for values read from `git_config_from_parameters()` */
624 void kvi_from_param(struct key_value_info *out)
625 {
626 out->filename = NULL;
627 out->linenr = -1;
628 out->origin_type = CONFIG_ORIGIN_CMDLINE;
629 out->scope = CONFIG_SCOPE_COMMAND;
630 out->path = NULL;
631 }
632
633 int git_config_parse_parameter(const char *text,
634 config_fn_t fn, void *data)
635 {
636 const char *value;
637 struct strbuf **pair;
638 int ret;
639 struct key_value_info kvi = KVI_INIT;
640
641 kvi_from_param(&kvi);
642
643 pair = strbuf_split_str(text, '=', 2);
644 if (!pair[0])
645 return error(_("bogus config parameter: %s"), text);
646
647 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
648 strbuf_setlen(pair[0], pair[0]->len - 1);
649 value = pair[1] ? pair[1]->buf : "";
650 } else {
651 value = NULL;
652 }
653
654 strbuf_trim(pair[0]);
655 if (!pair[0]->len) {
656 strbuf_list_free(pair);
657 return error(_("bogus config parameter: %s"), text);
658 }
659
660 ret = config_parse_pair(pair[0]->buf, value, &kvi, fn, data);
661 strbuf_list_free(pair);
662 return ret;
663 }
664
665 static int parse_config_env_list(char *env, struct key_value_info *kvi,
666 config_fn_t fn, void *data)
667 {
668 char *cur = env;
669 while (cur && *cur) {
670 const char *key = sq_dequote_step(cur, &cur);
671 if (!key)
672 return error(_("bogus format in %s"),
673 CONFIG_DATA_ENVIRONMENT);
674
675 if (!cur || isspace(*cur)) {
676 /* old-style 'key=value' */
677 if (git_config_parse_parameter(key, fn, data) < 0)
678 return -1;
679 }
680 else if (*cur == '=') {
681 /* new-style 'key'='value' */
682 const char *value;
683
684 cur++;
685 if (*cur == '\'') {
686 /* quoted value */
687 value = sq_dequote_step(cur, &cur);
688 if (!value || (cur && !isspace(*cur))) {
689 return error(_("bogus format in %s"),
690 CONFIG_DATA_ENVIRONMENT);
691 }
692 } else if (!*cur || isspace(*cur)) {
693 /* implicit bool: 'key'= */
694 value = NULL;
695 } else {
696 return error(_("bogus format in %s"),
697 CONFIG_DATA_ENVIRONMENT);
698 }
699
700 if (config_parse_pair(key, value, kvi, fn, data) < 0)
701 return -1;
702 }
703 else {
704 /* unknown format */
705 return error(_("bogus format in %s"),
706 CONFIG_DATA_ENVIRONMENT);
707 }
708
709 if (cur) {
710 while (isspace(*cur))
711 cur++;
712 }
713 }
714 return 0;
715 }
716
717 int git_config_from_parameters(config_fn_t fn, void *data)
718 {
719 const char *env;
720 struct strbuf envvar = STRBUF_INIT;
721 struct strvec to_free = STRVEC_INIT;
722 int ret = 0;
723 char *envw = NULL;
724 struct key_value_info kvi = KVI_INIT;
725
726 kvi_from_param(&kvi);
727 env = getenv(CONFIG_COUNT_ENVIRONMENT);
728 if (env) {
729 unsigned long count;
730 char *endp;
731 int i;
732
733 count = strtoul(env, &endp, 10);
734 if (*endp) {
735 ret = error(_("bogus count in %s"), CONFIG_COUNT_ENVIRONMENT);
736 goto out;
737 }
738 if (count > INT_MAX) {
739 ret = error(_("too many entries in %s"), CONFIG_COUNT_ENVIRONMENT);
740 goto out;
741 }
742
743 for (i = 0; i < count; i++) {
744 const char *key, *value;
745
746 strbuf_addf(&envvar, "GIT_CONFIG_KEY_%d", i);
747 key = getenv_safe(&to_free, envvar.buf);
748 if (!key) {
749 ret = error(_("missing config key %s"), envvar.buf);
750 goto out;
751 }
752 strbuf_reset(&envvar);
753
754 strbuf_addf(&envvar, "GIT_CONFIG_VALUE_%d", i);
755 value = getenv_safe(&to_free, envvar.buf);
756 if (!value) {
757 ret = error(_("missing config value %s"), envvar.buf);
758 goto out;
759 }
760 strbuf_reset(&envvar);
761
762 if (config_parse_pair(key, value, &kvi, fn, data) < 0) {
763 ret = -1;
764 goto out;
765 }
766 }
767 }
768
769 env = getenv(CONFIG_DATA_ENVIRONMENT);
770 if (env) {
771 /* sq_dequote will write over it */
772 envw = xstrdup(env);
773 if (parse_config_env_list(envw, &kvi, fn, data) < 0) {
774 ret = -1;
775 goto out;
776 }
777 }
778
779 out:
780 strbuf_release(&envvar);
781 strvec_clear(&to_free);
782 free(envw);
783 return ret;
784 }
785
786 static int get_next_char(struct config_source *cs)
787 {
788 int c = cs->do_fgetc(cs);
789
790 if (c == '\r') {
791 /* DOS like systems */
792 c = cs->do_fgetc(cs);
793 if (c != '\n') {
794 if (c != EOF)
795 cs->do_ungetc(c, cs);
796 c = '\r';
797 }
798 }
799
800 if (c != EOF && ++cs->total_len > INT_MAX) {
801 /*
802 * This is an absurdly long config file; refuse to parse
803 * further in order to protect downstream code from integer
804 * overflows. Note that we can't return an error specifically,
805 * but we can mark EOF and put trash in the return value,
806 * which will trigger a parse error.
807 */
808 cs->eof = 1;
809 return 0;
810 }
811
812 if (c == '\n')
813 cs->linenr++;
814 if (c == EOF) {
815 cs->eof = 1;
816 cs->linenr++;
817 c = '\n';
818 }
819 return c;
820 }
821
822 static char *parse_value(struct config_source *cs)
823 {
824 int quote = 0, comment = 0, space = 0;
825
826 strbuf_reset(&cs->value);
827 for (;;) {
828 int c = get_next_char(cs);
829 if (c == '\n') {
830 if (quote) {
831 cs->linenr--;
832 return NULL;
833 }
834 return cs->value.buf;
835 }
836 if (comment)
837 continue;
838 if (isspace(c) && !quote) {
839 if (cs->value.len)
840 space++;
841 continue;
842 }
843 if (!quote) {
844 if (c == ';' || c == '#') {
845 comment = 1;
846 continue;
847 }
848 }
849 for (; space; space--)
850 strbuf_addch(&cs->value, ' ');
851 if (c == '\\') {
852 c = get_next_char(cs);
853 switch (c) {
854 case '\n':
855 continue;
856 case 't':
857 c = '\t';
858 break;
859 case 'b':
860 c = '\b';
861 break;
862 case 'n':
863 c = '\n';
864 break;
865 /* Some characters escape as themselves */
866 case '\\': case '"':
867 break;
868 /* Reject unknown escape sequences */
869 default:
870 return NULL;
871 }
872 strbuf_addch(&cs->value, c);
873 continue;
874 }
875 if (c == '"') {
876 quote = 1-quote;
877 continue;
878 }
879 strbuf_addch(&cs->value, c);
880 }
881 }
882
883 static int get_value(struct config_source *cs, struct key_value_info *kvi,
884 config_fn_t fn, void *data, struct strbuf *name)
885 {
886 int c;
887 char *value;
888 int ret;
889 struct config_context ctx = {
890 .kvi = kvi,
891 };
892
893 /* Get the full name */
894 for (;;) {
895 c = get_next_char(cs);
896 if (cs->eof)
897 break;
898 if (!iskeychar(c))
899 break;
900 strbuf_addch(name, tolower(c));
901 }
902
903 while (c == ' ' || c == '\t')
904 c = get_next_char(cs);
905
906 value = NULL;
907 if (c != '\n') {
908 if (c != '=')
909 return -1;
910 value = parse_value(cs);
911 if (!value)
912 return -1;
913 }
914 /*
915 * We already consumed the \n, but we need linenr to point to
916 * the line we just parsed during the call to fn to get
917 * accurate line number in error messages.
918 */
919 cs->linenr--;
920 kvi->linenr = cs->linenr;
921 ret = fn(name->buf, value, &ctx, data);
922 if (ret >= 0)
923 cs->linenr++;
924 return ret;
925 }
926
927 static int get_extended_base_var(struct config_source *cs, struct strbuf *name,
928 int c)
929 {
930 cs->subsection_case_sensitive = 0;
931 do {
932 if (c == '\n')
933 goto error_incomplete_line;
934 c = get_next_char(cs);
935 } while (isspace(c));
936
937 /* We require the format to be '[base "extension"]' */
938 if (c != '"')
939 return -1;
940 strbuf_addch(name, '.');
941
942 for (;;) {
943 int c = get_next_char(cs);
944 if (c == '\n')
945 goto error_incomplete_line;
946 if (c == '"')
947 break;
948 if (c == '\\') {
949 c = get_next_char(cs);
950 if (c == '\n')
951 goto error_incomplete_line;
952 }
953 strbuf_addch(name, c);
954 }
955
956 /* Final ']' */
957 if (get_next_char(cs) != ']')
958 return -1;
959 return 0;
960 error_incomplete_line:
961 cs->linenr--;
962 return -1;
963 }
964
965 static int get_base_var(struct config_source *cs, struct strbuf *name)
966 {
967 cs->subsection_case_sensitive = 1;
968 for (;;) {
969 int c = get_next_char(cs);
970 if (cs->eof)
971 return -1;
972 if (c == ']')
973 return 0;
974 if (isspace(c))
975 return get_extended_base_var(cs, name, c);
976 if (!iskeychar(c) && c != '.')
977 return -1;
978 strbuf_addch(name, tolower(c));
979 }
980 }
981
982 struct parse_event_data {
983 enum config_event_t previous_type;
984 size_t previous_offset;
985 const struct config_options *opts;
986 };
987
988 static int do_event(struct config_source *cs, enum config_event_t type,
989 struct parse_event_data *data)
990 {
991 size_t offset;
992
993 if (!data->opts || !data->opts->event_fn)
994 return 0;
995
996 if (type == CONFIG_EVENT_WHITESPACE &&
997 data->previous_type == type)
998 return 0;
999
1000 offset = cs->do_ftell(cs);
1001 /*
1002 * At EOF, the parser always "inserts" an extra '\n', therefore
1003 * the end offset of the event is the current file position, otherwise
1004 * we will already have advanced to the next event.
1005 */
1006 if (type != CONFIG_EVENT_EOF)
1007 offset--;
1008
1009 if (data->previous_type != CONFIG_EVENT_EOF &&
1010 data->opts->event_fn(data->previous_type, data->previous_offset,
1011 offset, cs, data->opts->event_fn_data) < 0)
1012 return -1;
1013
1014 data->previous_type = type;
1015 data->previous_offset = offset;
1016
1017 return 0;
1018 }
1019
1020 static void kvi_from_source(struct config_source *cs,
1021 enum config_scope scope,
1022 struct key_value_info *out)
1023 {
1024 out->filename = strintern(cs->name);
1025 out->origin_type = cs->origin_type;
1026 out->linenr = cs->linenr;
1027 out->scope = scope;
1028 out->path = cs->path;
1029 }
1030
1031 static int git_parse_source(struct config_source *cs, config_fn_t fn,
1032 struct key_value_info *kvi, void *data,
1033 const struct config_options *opts)
1034 {
1035 int comment = 0;
1036 size_t baselen = 0;
1037 struct strbuf *var = &cs->var;
1038 int error_return = 0;
1039 char *error_msg = NULL;
1040
1041 /* U+FEFF Byte Order Mark in UTF8 */
1042 const char *bomptr = utf8_bom;
1043
1044 /* For the parser event callback */
1045 struct parse_event_data event_data = {
1046 CONFIG_EVENT_EOF, 0, opts
1047 };
1048
1049 for (;;) {
1050 int c;
1051
1052 c = get_next_char(cs);
1053 if (bomptr && *bomptr) {
1054 /* We are at the file beginning; skip UTF8-encoded BOM
1055 * if present. Sane editors won't put this in on their
1056 * own, but e.g. Windows Notepad will do it happily. */
1057 if (c == (*bomptr & 0377)) {
1058 bomptr++;
1059 continue;
1060 } else {
1061 /* Do not tolerate partial BOM. */
1062 if (bomptr != utf8_bom)
1063 break;
1064 /* No BOM at file beginning. Cool. */
1065 bomptr = NULL;
1066 }
1067 }
1068 if (c == '\n') {
1069 if (cs->eof) {
1070 if (do_event(cs, CONFIG_EVENT_EOF, &event_data) < 0)
1071 return -1;
1072 return 0;
1073 }
1074 if (do_event(cs, CONFIG_EVENT_WHITESPACE, &event_data) < 0)
1075 return -1;
1076 comment = 0;
1077 continue;
1078 }
1079 if (comment)
1080 continue;
1081 if (isspace(c)) {
1082 if (do_event(cs, CONFIG_EVENT_WHITESPACE, &event_data) < 0)
1083 return -1;
1084 continue;
1085 }
1086 if (c == '#' || c == ';') {
1087 if (do_event(cs, CONFIG_EVENT_COMMENT, &event_data) < 0)
1088 return -1;
1089 comment = 1;
1090 continue;
1091 }
1092 if (c == '[') {
1093 if (do_event(cs, CONFIG_EVENT_SECTION, &event_data) < 0)
1094 return -1;
1095
1096 /* Reset prior to determining a new stem */
1097 strbuf_reset(var);
1098 if (get_base_var(cs, var) < 0 || var->len < 1)
1099 break;
1100 strbuf_addch(var, '.');
1101 baselen = var->len;
1102 continue;
1103 }
1104 if (!isalpha(c))
1105 break;
1106
1107 if (do_event(cs, CONFIG_EVENT_ENTRY, &event_data) < 0)
1108 return -1;
1109
1110 /*
1111 * Truncate the var name back to the section header
1112 * stem prior to grabbing the suffix part of the name
1113 * and the value.
1114 */
1115 strbuf_setlen(var, baselen);
1116 strbuf_addch(var, tolower(c));
1117 if (get_value(cs, kvi, fn, data, var) < 0)
1118 break;
1119 }
1120
1121 if (do_event(cs, CONFIG_EVENT_ERROR, &event_data) < 0)
1122 return -1;
1123
1124 switch (cs->origin_type) {
1125 case CONFIG_ORIGIN_BLOB:
1126 error_msg = xstrfmt(_("bad config line %d in blob %s"),
1127 cs->linenr, cs->name);
1128 break;
1129 case CONFIG_ORIGIN_FILE:
1130 error_msg = xstrfmt(_("bad config line %d in file %s"),
1131 cs->linenr, cs->name);
1132 break;
1133 case CONFIG_ORIGIN_STDIN:
1134 error_msg = xstrfmt(_("bad config line %d in standard input"),
1135 cs->linenr);
1136 break;
1137 case CONFIG_ORIGIN_SUBMODULE_BLOB:
1138 error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
1139 cs->linenr, cs->name);
1140 break;
1141 case CONFIG_ORIGIN_CMDLINE:
1142 error_msg = xstrfmt(_("bad config line %d in command line %s"),
1143 cs->linenr, cs->name);
1144 break;
1145 default:
1146 error_msg = xstrfmt(_("bad config line %d in %s"),
1147 cs->linenr, cs->name);
1148 }
1149
1150 switch (opts && opts->error_action ?
1151 opts->error_action :
1152 cs->default_error_action) {
1153 case CONFIG_ERROR_DIE:
1154 die("%s", error_msg);
1155 break;
1156 case CONFIG_ERROR_ERROR:
1157 error_return = error("%s", error_msg);
1158 break;
1159 case CONFIG_ERROR_SILENT:
1160 error_return = -1;
1161 break;
1162 case CONFIG_ERROR_UNSET:
1163 BUG("config error action unset");
1164 }
1165
1166 free(error_msg);
1167 return error_return;
1168 }
1169
1170 NORETURN
1171 static void die_bad_number(const char *name, const char *value,
1172 const struct key_value_info *kvi)
1173 {
1174 const char *error_type = (errno == ERANGE) ?
1175 N_("out of range") : N_("invalid unit");
1176 const char *bad_numeric = N_("bad numeric config value '%s' for '%s': %s");
1177
1178 if (!kvi)
1179 BUG("kvi should not be NULL");
1180
1181 if (!value)
1182 value = "";
1183
1184 if (!kvi->filename)
1185 die(_(bad_numeric), value, name, _(error_type));
1186
1187 switch (kvi->origin_type) {
1188 case CONFIG_ORIGIN_BLOB:
1189 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
1190 value, name, kvi->filename, _(error_type));
1191 case CONFIG_ORIGIN_FILE:
1192 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
1193 value, name, kvi->filename, _(error_type));
1194 case CONFIG_ORIGIN_STDIN:
1195 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
1196 value, name, _(error_type));
1197 case CONFIG_ORIGIN_SUBMODULE_BLOB:
1198 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
1199 value, name, kvi->filename, _(error_type));
1200 case CONFIG_ORIGIN_CMDLINE:
1201 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
1202 value, name, kvi->filename, _(error_type));
1203 default:
1204 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
1205 value, name, kvi->filename, _(error_type));
1206 }
1207 }
1208
1209 int git_config_int(const char *name, const char *value,
1210 const struct key_value_info *kvi)
1211 {
1212 int ret;
1213 if (!git_parse_int(value, &ret))
1214 die_bad_number(name, value, kvi);
1215 return ret;
1216 }
1217
1218 int64_t git_config_int64(const char *name, const char *value,
1219 const struct key_value_info *kvi)
1220 {
1221 int64_t ret;
1222 if (!git_parse_int64(value, &ret))
1223 die_bad_number(name, value, kvi);
1224 return ret;
1225 }
1226
1227 unsigned long git_config_ulong(const char *name, const char *value,
1228 const struct key_value_info *kvi)
1229 {
1230 unsigned long ret;
1231 if (!git_parse_ulong(value, &ret))
1232 die_bad_number(name, value, kvi);
1233 return ret;
1234 }
1235
1236 ssize_t git_config_ssize_t(const char *name, const char *value,
1237 const struct key_value_info *kvi)
1238 {
1239 ssize_t ret;
1240 if (!git_parse_ssize_t(value, &ret))
1241 die_bad_number(name, value, kvi);
1242 return ret;
1243 }
1244
1245 static const struct fsync_component_name {
1246 const char *name;
1247 enum fsync_component component_bits;
1248 } fsync_component_names[] = {
1249 { "loose-object", FSYNC_COMPONENT_LOOSE_OBJECT },
1250 { "pack", FSYNC_COMPONENT_PACK },
1251 { "pack-metadata", FSYNC_COMPONENT_PACK_METADATA },
1252 { "commit-graph", FSYNC_COMPONENT_COMMIT_GRAPH },
1253 { "index", FSYNC_COMPONENT_INDEX },
1254 { "objects", FSYNC_COMPONENTS_OBJECTS },
1255 { "reference", FSYNC_COMPONENT_REFERENCE },
1256 { "derived-metadata", FSYNC_COMPONENTS_DERIVED_METADATA },
1257 { "committed", FSYNC_COMPONENTS_COMMITTED },
1258 { "added", FSYNC_COMPONENTS_ADDED },
1259 { "all", FSYNC_COMPONENTS_ALL },
1260 };
1261
1262 static enum fsync_component parse_fsync_components(const char *var, const char *string)
1263 {
1264 enum fsync_component current = FSYNC_COMPONENTS_PLATFORM_DEFAULT;
1265 enum fsync_component positive = 0, negative = 0;
1266
1267 while (string) {
1268 int i;
1269 size_t len;
1270 const char *ep;
1271 int negated = 0;
1272 int found = 0;
1273
1274 string = string + strspn(string, ", \t\n\r");
1275 ep = strchrnul(string, ',');
1276 len = ep - string;
1277 if (!strcmp(string, "none")) {
1278 current = FSYNC_COMPONENT_NONE;
1279 goto next_name;
1280 }
1281
1282 if (*string == '-') {
1283 negated = 1;
1284 string++;
1285 len--;
1286 if (!len)
1287 warning(_("invalid value for variable %s"), var);
1288 }
1289
1290 if (!len)
1291 break;
1292
1293 for (i = 0; i < ARRAY_SIZE(fsync_component_names); ++i) {
1294 const struct fsync_component_name *n = &fsync_component_names[i];
1295
1296 if (strncmp(n->name, string, len))
1297 continue;
1298
1299 found = 1;
1300 if (negated)
1301 negative |= n->component_bits;
1302 else
1303 positive |= n->component_bits;
1304 }
1305
1306 if (!found) {
1307 char *component = xstrndup(string, len);
1308 warning(_("ignoring unknown core.fsync component '%s'"), component);
1309 free(component);
1310 }
1311
1312 next_name:
1313 string = ep;
1314 }
1315
1316 return (current & ~negative) | positive;
1317 }
1318
1319 int git_config_bool_or_int(const char *name, const char *value,
1320 const struct key_value_info *kvi, int *is_bool)
1321 {
1322 int v = git_parse_maybe_bool_text(value);
1323 if (0 <= v) {
1324 *is_bool = 1;
1325 return v;
1326 }
1327 *is_bool = 0;
1328 return git_config_int(name, value, kvi);
1329 }
1330
1331 int git_config_bool(const char *name, const char *value)
1332 {
1333 int v = git_parse_maybe_bool(value);
1334 if (v < 0)
1335 die(_("bad boolean config value '%s' for '%s'"), value, name);
1336 return v;
1337 }
1338
1339 int git_config_string(const char **dest, const char *var, const char *value)
1340 {
1341 if (!value)
1342 return config_error_nonbool(var);
1343 *dest = xstrdup(value);
1344 return 0;
1345 }
1346
1347 int git_config_pathname(const char **dest, const char *var, const char *value)
1348 {
1349 if (!value)
1350 return config_error_nonbool(var);
1351 *dest = interpolate_path(value, 0);
1352 if (!*dest)
1353 die(_("failed to expand user dir in: '%s'"), value);
1354 return 0;
1355 }
1356
1357 int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *value)
1358 {
1359 if (!value)
1360 return config_error_nonbool(var);
1361 if (parse_expiry_date(value, timestamp))
1362 return error(_("'%s' for '%s' is not a valid timestamp"),
1363 value, var);
1364 return 0;
1365 }
1366
1367 int git_config_color(char *dest, const char *var, const char *value)
1368 {
1369 if (!value)
1370 return config_error_nonbool(var);
1371 if (color_parse(value, dest) < 0)
1372 return -1;
1373 return 0;
1374 }
1375
1376 static int git_default_core_config(const char *var, const char *value,
1377 const struct config_context *ctx, void *cb)
1378 {
1379 /* This needs a better name */
1380 if (!strcmp(var, "core.filemode")) {
1381 trust_executable_bit = git_config_bool(var, value);
1382 return 0;
1383 }
1384 if (!strcmp(var, "core.trustctime")) {
1385 trust_ctime = git_config_bool(var, value);
1386 return 0;
1387 }
1388 if (!strcmp(var, "core.checkstat")) {
1389 if (!value)
1390 return config_error_nonbool(var);
1391 if (!strcasecmp(value, "default"))
1392 check_stat = 1;
1393 else if (!strcasecmp(value, "minimal"))
1394 check_stat = 0;
1395 else
1396 return error(_("invalid value for '%s': '%s'"),
1397 var, value);
1398 }
1399
1400 if (!strcmp(var, "core.quotepath")) {
1401 quote_path_fully = git_config_bool(var, value);
1402 return 0;
1403 }
1404
1405 if (!strcmp(var, "core.symlinks")) {
1406 has_symlinks = git_config_bool(var, value);
1407 return 0;
1408 }
1409
1410 if (!strcmp(var, "core.ignorecase")) {
1411 ignore_case = git_config_bool(var, value);
1412 return 0;
1413 }
1414
1415 if (!strcmp(var, "core.attributesfile"))
1416 return git_config_pathname(&git_attributes_file, var, value);
1417
1418 if (!strcmp(var, "core.hookspath"))
1419 return git_config_pathname(&git_hooks_path, var, value);
1420
1421 if (!strcmp(var, "core.bare")) {
1422 is_bare_repository_cfg = git_config_bool(var, value);
1423 return 0;
1424 }
1425
1426 if (!strcmp(var, "core.ignorestat")) {
1427 assume_unchanged = git_config_bool(var, value);
1428 return 0;
1429 }
1430
1431 if (!strcmp(var, "core.prefersymlinkrefs")) {
1432 prefer_symlink_refs = git_config_bool(var, value);
1433 return 0;
1434 }
1435
1436 if (!strcmp(var, "core.logallrefupdates")) {
1437 if (value && !strcasecmp(value, "always"))
1438 log_all_ref_updates = LOG_REFS_ALWAYS;
1439 else if (git_config_bool(var, value))
1440 log_all_ref_updates = LOG_REFS_NORMAL;
1441 else
1442 log_all_ref_updates = LOG_REFS_NONE;
1443 return 0;
1444 }
1445
1446 if (!strcmp(var, "core.warnambiguousrefs")) {
1447 warn_ambiguous_refs = git_config_bool(var, value);
1448 return 0;
1449 }
1450
1451 if (!strcmp(var, "core.abbrev")) {
1452 if (!value)
1453 return config_error_nonbool(var);
1454 if (!strcasecmp(value, "auto"))
1455 default_abbrev = -1;
1456 else if (!git_parse_maybe_bool_text(value))
1457 default_abbrev = the_hash_algo->hexsz;
1458 else {
1459 int abbrev = git_config_int(var, value, ctx->kvi);
1460 if (abbrev < minimum_abbrev || abbrev > the_hash_algo->hexsz)
1461 return error(_("abbrev length out of range: %d"), abbrev);
1462 default_abbrev = abbrev;
1463 }
1464 return 0;
1465 }
1466
1467 if (!strcmp(var, "core.disambiguate"))
1468 return set_disambiguate_hint_config(var, value);
1469
1470 if (!strcmp(var, "core.loosecompression")) {
1471 int level = git_config_int(var, value, ctx->kvi);
1472 if (level == -1)
1473 level = Z_DEFAULT_COMPRESSION;
1474 else if (level < 0 || level > Z_BEST_COMPRESSION)
1475 die(_("bad zlib compression level %d"), level);
1476 zlib_compression_level = level;
1477 zlib_compression_seen = 1;
1478 return 0;
1479 }
1480
1481 if (!strcmp(var, "core.compression")) {
1482 int level = git_config_int(var, value, ctx->kvi);
1483 if (level == -1)
1484 level = Z_DEFAULT_COMPRESSION;
1485 else if (level < 0 || level > Z_BEST_COMPRESSION)
1486 die(_("bad zlib compression level %d"), level);
1487 if (!zlib_compression_seen)
1488 zlib_compression_level = level;
1489 if (!pack_compression_seen)
1490 pack_compression_level = level;
1491 return 0;
1492 }
1493
1494 if (!strcmp(var, "core.packedgitwindowsize")) {
1495 int pgsz_x2 = getpagesize() * 2;
1496 packed_git_window_size = git_config_ulong(var, value, ctx->kvi);
1497
1498 /* This value must be multiple of (pagesize * 2) */
1499 packed_git_window_size /= pgsz_x2;
1500 if (packed_git_window_size < 1)
1501 packed_git_window_size = 1;
1502 packed_git_window_size *= pgsz_x2;
1503 return 0;
1504 }
1505
1506 if (!strcmp(var, "core.bigfilethreshold")) {
1507 big_file_threshold = git_config_ulong(var, value, ctx->kvi);
1508 return 0;
1509 }
1510
1511 if (!strcmp(var, "core.packedgitlimit")) {
1512 packed_git_limit = git_config_ulong(var, value, ctx->kvi);
1513 return 0;
1514 }
1515
1516 if (!strcmp(var, "core.deltabasecachelimit")) {
1517 delta_base_cache_limit = git_config_ulong(var, value, ctx->kvi);
1518 return 0;
1519 }
1520
1521 if (!strcmp(var, "core.autocrlf")) {
1522 if (value && !strcasecmp(value, "input")) {
1523 auto_crlf = AUTO_CRLF_INPUT;
1524 return 0;
1525 }
1526 auto_crlf = git_config_bool(var, value);
1527 return 0;
1528 }
1529
1530 if (!strcmp(var, "core.safecrlf")) {
1531 int eol_rndtrp_die;
1532 if (value && !strcasecmp(value, "warn")) {
1533 global_conv_flags_eol = CONV_EOL_RNDTRP_WARN;
1534 return 0;
1535 }
1536 eol_rndtrp_die = git_config_bool(var, value);
1537 global_conv_flags_eol = eol_rndtrp_die ?
1538 CONV_EOL_RNDTRP_DIE : 0;
1539 return 0;
1540 }
1541
1542 if (!strcmp(var, "core.eol")) {
1543 if (value && !strcasecmp(value, "lf"))
1544 core_eol = EOL_LF;
1545 else if (value && !strcasecmp(value, "crlf"))
1546 core_eol = EOL_CRLF;
1547 else if (value && !strcasecmp(value, "native"))
1548 core_eol = EOL_NATIVE;
1549 else
1550 core_eol = EOL_UNSET;
1551 return 0;
1552 }
1553
1554 if (!strcmp(var, "core.checkroundtripencoding")) {
1555 if (!value)
1556 return config_error_nonbool(var);
1557 check_roundtrip_encoding = xstrdup(value);
1558 return 0;
1559 }
1560
1561 if (!strcmp(var, "core.notesref")) {
1562 if (!value)
1563 return config_error_nonbool(var);
1564 notes_ref_name = xstrdup(value);
1565 return 0;
1566 }
1567
1568 if (!strcmp(var, "core.editor"))
1569 return git_config_string(&editor_program, var, value);
1570
1571 if (!strcmp(var, "core.commentchar")) {
1572 if (!value)
1573 return config_error_nonbool(var);
1574 else if (!strcasecmp(value, "auto"))
1575 auto_comment_line_char = 1;
1576 else if (value[0] && !value[1]) {
1577 comment_line_char = value[0];
1578 auto_comment_line_char = 0;
1579 } else
1580 return error(_("core.commentChar should only be one ASCII character"));
1581 return 0;
1582 }
1583
1584 if (!strcmp(var, "core.askpass"))
1585 return git_config_string(&askpass_program, var, value);
1586
1587 if (!strcmp(var, "core.excludesfile"))
1588 return git_config_pathname(&excludes_file, var, value);
1589
1590 if (!strcmp(var, "core.whitespace")) {
1591 if (!value)
1592 return config_error_nonbool(var);
1593 whitespace_rule_cfg = parse_whitespace_rule(value);
1594 return 0;
1595 }
1596
1597 if (!strcmp(var, "core.fsync")) {
1598 if (!value)
1599 return config_error_nonbool(var);
1600 fsync_components = parse_fsync_components(var, value);
1601 return 0;
1602 }
1603
1604 if (!strcmp(var, "core.fsyncmethod")) {
1605 if (!value)
1606 return config_error_nonbool(var);
1607 if (!strcmp(value, "fsync"))
1608 fsync_method = FSYNC_METHOD_FSYNC;
1609 else if (!strcmp(value, "writeout-only"))
1610 fsync_method = FSYNC_METHOD_WRITEOUT_ONLY;
1611 else if (!strcmp(value, "batch"))
1612 fsync_method = FSYNC_METHOD_BATCH;
1613 else
1614 warning(_("ignoring unknown core.fsyncMethod value '%s'"), value);
1615
1616 }
1617
1618 if (!strcmp(var, "core.fsyncobjectfiles")) {
1619 if (fsync_object_files < 0)
1620 warning(_("core.fsyncObjectFiles is deprecated; use core.fsync instead"));
1621 fsync_object_files = git_config_bool(var, value);
1622 return 0;
1623 }
1624
1625 if (!strcmp(var, "core.preloadindex")) {
1626 core_preload_index = git_config_bool(var, value);
1627 return 0;
1628 }
1629
1630 if (!strcmp(var, "core.createobject")) {
1631 if (!value)
1632 return config_error_nonbool(var);
1633 if (!strcmp(value, "rename"))
1634 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1635 else if (!strcmp(value, "link"))
1636 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1637 else
1638 die(_("invalid mode for object creation: %s"), value);
1639 return 0;
1640 }
1641
1642 if (!strcmp(var, "core.sparsecheckout")) {
1643 core_apply_sparse_checkout = git_config_bool(var, value);
1644 return 0;
1645 }
1646
1647 if (!strcmp(var, "core.sparsecheckoutcone")) {
1648 core_sparse_checkout_cone = git_config_bool(var, value);
1649 return 0;
1650 }
1651
1652 if (!strcmp(var, "core.precomposeunicode")) {
1653 precomposed_unicode = git_config_bool(var, value);
1654 return 0;
1655 }
1656
1657 if (!strcmp(var, "core.protecthfs")) {
1658 protect_hfs = git_config_bool(var, value);
1659 return 0;
1660 }
1661
1662 if (!strcmp(var, "core.protectntfs")) {
1663 protect_ntfs = git_config_bool(var, value);
1664 return 0;
1665 }
1666
1667 if (!strcmp(var, "core.maxtreedepth")) {
1668 max_allowed_tree_depth = git_config_int(var, value, ctx->kvi);
1669 return 0;
1670 }
1671
1672 /* Add other config variables here and to Documentation/config.txt. */
1673 return platform_core_config(var, value, ctx, cb);
1674 }
1675
1676 static int git_default_sparse_config(const char *var, const char *value)
1677 {
1678 if (!strcmp(var, "sparse.expectfilesoutsideofpatterns")) {
1679 sparse_expect_files_outside_of_patterns = git_config_bool(var, value);
1680 return 0;
1681 }
1682
1683 /* Add other config variables here and to Documentation/config/sparse.txt. */
1684 return 0;
1685 }
1686
1687 static int git_default_i18n_config(const char *var, const char *value)
1688 {
1689 if (!strcmp(var, "i18n.commitencoding"))
1690 return git_config_string(&git_commit_encoding, var, value);
1691
1692 if (!strcmp(var, "i18n.logoutputencoding"))
1693 return git_config_string(&git_log_output_encoding, var, value);
1694
1695 /* Add other config variables here and to Documentation/config.txt. */
1696 return 0;
1697 }
1698
1699 static int git_default_branch_config(const char *var, const char *value)
1700 {
1701 if (!strcmp(var, "branch.autosetupmerge")) {
1702 if (value && !strcmp(value, "always")) {
1703 git_branch_track = BRANCH_TRACK_ALWAYS;
1704 return 0;
1705 } else if (value && !strcmp(value, "inherit")) {
1706 git_branch_track = BRANCH_TRACK_INHERIT;
1707 return 0;
1708 } else if (value && !strcmp(value, "simple")) {
1709 git_branch_track = BRANCH_TRACK_SIMPLE;
1710 return 0;
1711 }
1712 git_branch_track = git_config_bool(var, value);
1713 return 0;
1714 }
1715 if (!strcmp(var, "branch.autosetuprebase")) {
1716 if (!value)
1717 return config_error_nonbool(var);
1718 else if (!strcmp(value, "never"))
1719 autorebase = AUTOREBASE_NEVER;
1720 else if (!strcmp(value, "local"))
1721 autorebase = AUTOREBASE_LOCAL;
1722 else if (!strcmp(value, "remote"))
1723 autorebase = AUTOREBASE_REMOTE;
1724 else if (!strcmp(value, "always"))
1725 autorebase = AUTOREBASE_ALWAYS;
1726 else
1727 return error(_("malformed value for %s"), var);
1728 return 0;
1729 }
1730
1731 /* Add other config variables here and to Documentation/config.txt. */
1732 return 0;
1733 }
1734
1735 static int git_default_push_config(const char *var, const char *value)
1736 {
1737 if (!strcmp(var, "push.default")) {
1738 if (!value)
1739 return config_error_nonbool(var);
1740 else if (!strcmp(value, "nothing"))
1741 push_default = PUSH_DEFAULT_NOTHING;
1742 else if (!strcmp(value, "matching"))
1743 push_default = PUSH_DEFAULT_MATCHING;
1744 else if (!strcmp(value, "simple"))
1745 push_default = PUSH_DEFAULT_SIMPLE;
1746 else if (!strcmp(value, "upstream"))
1747 push_default = PUSH_DEFAULT_UPSTREAM;
1748 else if (!strcmp(value, "tracking")) /* deprecated */
1749 push_default = PUSH_DEFAULT_UPSTREAM;
1750 else if (!strcmp(value, "current"))
1751 push_default = PUSH_DEFAULT_CURRENT;
1752 else {
1753 error(_("malformed value for %s: %s"), var, value);
1754 return error(_("must be one of nothing, matching, simple, "
1755 "upstream or current"));
1756 }
1757 return 0;
1758 }
1759
1760 /* Add other config variables here and to Documentation/config.txt. */
1761 return 0;
1762 }
1763
1764 static int git_default_mailmap_config(const char *var, const char *value)
1765 {
1766 if (!strcmp(var, "mailmap.file"))
1767 return git_config_pathname(&git_mailmap_file, var, value);
1768 if (!strcmp(var, "mailmap.blob"))
1769 return git_config_string(&git_mailmap_blob, var, value);
1770
1771 /* Add other config variables here and to Documentation/config.txt. */
1772 return 0;
1773 }
1774
1775 static int git_default_attr_config(const char *var, const char *value)
1776 {
1777 if (!strcmp(var, "attr.tree"))
1778 return git_config_string(&git_attr_tree, var, value);
1779
1780 /*
1781 * Add other attribute related config variables here and to
1782 * Documentation/config/attr.txt.
1783 */
1784 return 0;
1785 }
1786
1787 int git_default_config(const char *var, const char *value,
1788 const struct config_context *ctx, void *cb)
1789 {
1790 if (starts_with(var, "core."))
1791 return git_default_core_config(var, value, ctx, cb);
1792
1793 if (starts_with(var, "user.") ||
1794 starts_with(var, "author.") ||
1795 starts_with(var, "committer."))
1796 return git_ident_config(var, value, ctx, cb);
1797
1798 if (starts_with(var, "i18n."))
1799 return git_default_i18n_config(var, value);
1800
1801 if (starts_with(var, "branch."))
1802 return git_default_branch_config(var, value);
1803
1804 if (starts_with(var, "push."))
1805 return git_default_push_config(var, value);
1806
1807 if (starts_with(var, "mailmap."))
1808 return git_default_mailmap_config(var, value);
1809
1810 if (starts_with(var, "attr."))
1811 return git_default_attr_config(var, value);
1812
1813 if (starts_with(var, "advice.") || starts_with(var, "color.advice"))
1814 return git_default_advice_config(var, value);
1815
1816 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1817 pager_use_color = git_config_bool(var,value);
1818 return 0;
1819 }
1820
1821 if (!strcmp(var, "pack.packsizelimit")) {
1822 pack_size_limit_cfg = git_config_ulong(var, value, ctx->kvi);
1823 return 0;
1824 }
1825
1826 if (!strcmp(var, "pack.compression")) {
1827 int level = git_config_int(var, value, ctx->kvi);
1828 if (level == -1)
1829 level = Z_DEFAULT_COMPRESSION;
1830 else if (level < 0 || level > Z_BEST_COMPRESSION)
1831 die(_("bad pack compression level %d"), level);
1832 pack_compression_level = level;
1833 pack_compression_seen = 1;
1834 return 0;
1835 }
1836
1837 if (starts_with(var, "sparse."))
1838 return git_default_sparse_config(var, value);
1839
1840 /* Add other config variables here and to Documentation/config.txt. */
1841 return 0;
1842 }
1843
1844 /*
1845 * All source specific fields in the union, die_on_error, name and the callbacks
1846 * fgetc, ungetc, ftell of top need to be initialized before calling
1847 * this function.
1848 */
1849 static int do_config_from(struct config_source *top, config_fn_t fn,
1850 void *data, enum config_scope scope,
1851 const struct config_options *opts)
1852 {
1853 struct key_value_info kvi = KVI_INIT;
1854 int ret;
1855
1856 /* push config-file parsing state stack */
1857 top->linenr = 1;
1858 top->eof = 0;
1859 top->total_len = 0;
1860 strbuf_init(&top->value, 1024);
1861 strbuf_init(&top->var, 1024);
1862 kvi_from_source(top, scope, &kvi);
1863
1864 ret = git_parse_source(top, fn, &kvi, data, opts);
1865
1866 strbuf_release(&top->value);
1867 strbuf_release(&top->var);
1868
1869 return ret;
1870 }
1871
1872 static int do_config_from_file(config_fn_t fn,
1873 const enum config_origin_type origin_type,
1874 const char *name, const char *path, FILE *f,
1875 void *data, enum config_scope scope,
1876 const struct config_options *opts)
1877 {
1878 struct config_source top = CONFIG_SOURCE_INIT;
1879 int ret;
1880
1881 top.u.file = f;
1882 top.origin_type = origin_type;
1883 top.name = name;
1884 top.path = path;
1885 top.default_error_action = CONFIG_ERROR_DIE;
1886 top.do_fgetc = config_file_fgetc;
1887 top.do_ungetc = config_file_ungetc;
1888 top.do_ftell = config_file_ftell;
1889
1890 flockfile(f);
1891 ret = do_config_from(&top, fn, data, scope, opts);
1892 funlockfile(f);
1893 return ret;
1894 }
1895
1896 static int git_config_from_stdin(config_fn_t fn, void *data,
1897 enum config_scope scope)
1898 {
1899 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin,
1900 data, scope, NULL);
1901 }
1902
1903 int git_config_from_file_with_options(config_fn_t fn, const char *filename,
1904 void *data, enum config_scope scope,
1905 const struct config_options *opts)
1906 {
1907 int ret = -1;
1908 FILE *f;
1909
1910 if (!filename)
1911 BUG("filename cannot be NULL");
1912 f = fopen_or_warn(filename, "r");
1913 if (f) {
1914 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename,
1915 filename, f, data, scope, opts);
1916 fclose(f);
1917 }
1918 return ret;
1919 }
1920
1921 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1922 {
1923 return git_config_from_file_with_options(fn, filename, data,
1924 CONFIG_SCOPE_UNKNOWN, NULL);
1925 }
1926
1927 int git_config_from_mem(config_fn_t fn,
1928 const enum config_origin_type origin_type,
1929 const char *name, const char *buf, size_t len,
1930 void *data, enum config_scope scope,
1931 const struct config_options *opts)
1932 {
1933 struct config_source top = CONFIG_SOURCE_INIT;
1934
1935 top.u.buf.buf = buf;
1936 top.u.buf.len = len;
1937 top.u.buf.pos = 0;
1938 top.origin_type = origin_type;
1939 top.name = name;
1940 top.path = NULL;
1941 top.default_error_action = CONFIG_ERROR_ERROR;
1942 top.do_fgetc = config_buf_fgetc;
1943 top.do_ungetc = config_buf_ungetc;
1944 top.do_ftell = config_buf_ftell;
1945
1946 return do_config_from(&top, fn, data, scope, opts);
1947 }
1948
1949 int git_config_from_blob_oid(config_fn_t fn,
1950 const char *name,
1951 struct repository *repo,
1952 const struct object_id *oid,
1953 void *data,
1954 enum config_scope scope)
1955 {
1956 enum object_type type;
1957 char *buf;
1958 unsigned long size;
1959 int ret;
1960
1961 buf = repo_read_object_file(repo, oid, &type, &size);
1962 if (!buf)
1963 return error(_("unable to load config blob object '%s'"), name);
1964 if (type != OBJ_BLOB) {
1965 free(buf);
1966 return error(_("reference '%s' does not point to a blob"), name);
1967 }
1968
1969 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size,
1970 data, scope, NULL);
1971 free(buf);
1972
1973 return ret;
1974 }
1975
1976 static int git_config_from_blob_ref(config_fn_t fn,
1977 struct repository *repo,
1978 const char *name,
1979 void *data,
1980 enum config_scope scope)
1981 {
1982 struct object_id oid;
1983
1984 if (repo_get_oid(repo, name, &oid) < 0)
1985 return error(_("unable to resolve config blob '%s'"), name);
1986 return git_config_from_blob_oid(fn, name, repo, &oid, data, scope);
1987 }
1988
1989 char *git_system_config(void)
1990 {
1991 char *system_config = xstrdup_or_null(getenv("GIT_CONFIG_SYSTEM"));
1992 if (!system_config)
1993 system_config = system_path(ETC_GITCONFIG);
1994 normalize_path_copy(system_config, system_config);
1995 return system_config;
1996 }
1997
1998 void git_global_config(char **user_out, char **xdg_out)
1999 {
2000 char *user_config = xstrdup_or_null(getenv("GIT_CONFIG_GLOBAL"));
2001 char *xdg_config = NULL;
2002
2003 if (!user_config) {
2004 user_config = interpolate_path("~/.gitconfig", 0);
2005 xdg_config = xdg_config_home("config");
2006 }
2007
2008 *user_out = user_config;
2009 *xdg_out = xdg_config;
2010 }
2011
2012 int git_config_system(void)
2013 {
2014 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
2015 }
2016
2017 static int do_git_config_sequence(const struct config_options *opts,
2018 const struct repository *repo,
2019 config_fn_t fn, void *data)
2020 {
2021 int ret = 0;
2022 char *system_config = git_system_config();
2023 char *xdg_config = NULL;
2024 char *user_config = NULL;
2025 char *repo_config;
2026 char *worktree_config;
2027
2028 /*
2029 * Ensure that either:
2030 * - the git_dir and commondir are both set, or
2031 * - the git_dir and commondir are both NULL
2032 */
2033 if (!opts->git_dir != !opts->commondir)
2034 BUG("only one of commondir and git_dir is non-NULL");
2035
2036 if (opts->commondir) {
2037 repo_config = mkpathdup("%s/config", opts->commondir);
2038 worktree_config = mkpathdup("%s/config.worktree", opts->git_dir);
2039 } else {
2040 repo_config = NULL;
2041 worktree_config = NULL;
2042 }
2043
2044 if (git_config_system() && system_config &&
2045 !access_or_die(system_config, R_OK,
2046 opts->system_gently ? ACCESS_EACCES_OK : 0))
2047 ret += git_config_from_file_with_options(fn, system_config,
2048 data, CONFIG_SCOPE_SYSTEM,
2049 NULL);
2050
2051 git_global_config(&user_config, &xdg_config);
2052
2053 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
2054 ret += git_config_from_file_with_options(fn, xdg_config, data,
2055 CONFIG_SCOPE_GLOBAL, NULL);
2056
2057 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
2058 ret += git_config_from_file_with_options(fn, user_config, data,
2059 CONFIG_SCOPE_GLOBAL, NULL);
2060
2061 if (!opts->ignore_repo && repo_config &&
2062 !access_or_die(repo_config, R_OK, 0))
2063 ret += git_config_from_file_with_options(fn, repo_config, data,
2064 CONFIG_SCOPE_LOCAL, NULL);
2065
2066 if (!opts->ignore_worktree && worktree_config &&
2067 repo && repo->repository_format_worktree_config &&
2068 !access_or_die(worktree_config, R_OK, 0)) {
2069 ret += git_config_from_file_with_options(fn, worktree_config, data,
2070 CONFIG_SCOPE_WORKTREE,
2071 NULL);
2072 }
2073
2074 if (!opts->ignore_cmdline && git_config_from_parameters(fn, data) < 0)
2075 die(_("unable to parse command-line config"));
2076
2077 free(system_config);
2078 free(xdg_config);
2079 free(user_config);
2080 free(repo_config);
2081 free(worktree_config);
2082 return ret;
2083 }
2084
2085 int config_with_options(config_fn_t fn, void *data,
2086 struct git_config_source *config_source,
2087 struct repository *repo,
2088 const struct config_options *opts)
2089 {
2090 struct config_include_data inc = CONFIG_INCLUDE_INIT;
2091 int ret;
2092
2093 if (opts->respect_includes) {
2094 inc.fn = fn;
2095 inc.data = data;
2096 inc.opts = opts;
2097 inc.repo = repo;
2098 inc.config_source = config_source;
2099 fn = git_config_include;
2100 data = &inc;
2101 }
2102
2103 /*
2104 * If we have a specific filename, use it. Otherwise, follow the
2105 * regular lookup sequence.
2106 */
2107 if (config_source && config_source->use_stdin) {
2108 ret = git_config_from_stdin(fn, data, config_source->scope);
2109 } else if (config_source && config_source->file) {
2110 ret = git_config_from_file_with_options(fn, config_source->file,
2111 data, config_source->scope,
2112 NULL);
2113 } else if (config_source && config_source->blob) {
2114 ret = git_config_from_blob_ref(fn, repo, config_source->blob,
2115 data, config_source->scope);
2116 } else {
2117 ret = do_git_config_sequence(opts, repo, fn, data);
2118 }
2119
2120 if (inc.remote_urls) {
2121 string_list_clear(inc.remote_urls, 0);
2122 FREE_AND_NULL(inc.remote_urls);
2123 }
2124 return ret;
2125 }
2126
2127 static void configset_iter(struct config_set *set, config_fn_t fn, void *data)
2128 {
2129 int i, value_index;
2130 struct string_list *values;
2131 struct config_set_element *entry;
2132 struct configset_list *list = &set->list;
2133 struct config_context ctx = CONFIG_CONTEXT_INIT;
2134
2135 for (i = 0; i < list->nr; i++) {
2136 entry = list->items[i].e;
2137 value_index = list->items[i].value_index;
2138 values = &entry->value_list;
2139
2140 ctx.kvi = values->items[value_index].util;
2141 if (fn(entry->key, values->items[value_index].string, &ctx, data) < 0)
2142 git_die_config_linenr(entry->key,
2143 ctx.kvi->filename,
2144 ctx.kvi->linenr);
2145 }
2146 }
2147
2148 void read_early_config(config_fn_t cb, void *data)
2149 {
2150 struct config_options opts = {0};
2151 struct strbuf commondir = STRBUF_INIT;
2152 struct strbuf gitdir = STRBUF_INIT;
2153
2154 opts.respect_includes = 1;
2155
2156 if (have_git_dir()) {
2157 opts.commondir = get_git_common_dir();
2158 opts.git_dir = get_git_dir();
2159 /*
2160 * When setup_git_directory() was not yet asked to discover the
2161 * GIT_DIR, we ask discover_git_directory() to figure out whether there
2162 * is any repository config we should use (but unlike
2163 * setup_git_directory_gently(), no global state is changed, most
2164 * notably, the current working directory is still the same after the
2165 * call).
2166 */
2167 } else if (!discover_git_directory(&commondir, &gitdir)) {
2168 opts.commondir = commondir.buf;
2169 opts.git_dir = gitdir.buf;
2170 }
2171
2172 config_with_options(cb, data, NULL, NULL, &opts);
2173
2174 strbuf_release(&commondir);
2175 strbuf_release(&gitdir);
2176 }
2177
2178 /*
2179 * Read config but only enumerate system and global settings.
2180 * Omit any repo-local, worktree-local, or command-line settings.
2181 */
2182 void read_very_early_config(config_fn_t cb, void *data)
2183 {
2184 struct config_options opts = { 0 };
2185
2186 opts.respect_includes = 1;
2187 opts.ignore_repo = 1;
2188 opts.ignore_worktree = 1;
2189 opts.ignore_cmdline = 1;
2190 opts.system_gently = 1;
2191
2192 config_with_options(cb, data, NULL, NULL, &opts);
2193 }
2194
2195 RESULT_MUST_BE_USED
2196 static int configset_find_element(struct config_set *set, const char *key,
2197 struct config_set_element **dest)
2198 {
2199 struct config_set_element k;
2200 struct config_set_element *found_entry;
2201 char *normalized_key;
2202 int ret;
2203
2204 /*
2205 * `key` may come from the user, so normalize it before using it
2206 * for querying entries from the hashmap.
2207 */
2208 ret = git_config_parse_key(key, &normalized_key, NULL);
2209 if (ret)
2210 return ret;
2211
2212 hashmap_entry_init(&k.ent, strhash(normalized_key));
2213 k.key = normalized_key;
2214 found_entry = hashmap_get_entry(&set->config_hash, &k, ent, NULL);
2215 free(normalized_key);
2216 *dest = found_entry;
2217 return 0;
2218 }
2219
2220 static int configset_add_value(const struct key_value_info *kvi_p,
2221 struct config_set *set, const char *key,
2222 const char *value)
2223 {
2224 struct config_set_element *e;
2225 struct string_list_item *si;
2226 struct configset_list_item *l_item;
2227 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
2228 int ret;
2229
2230 ret = configset_find_element(set, key, &e);
2231 if (ret)
2232 return ret;
2233 /*
2234 * Since the keys are being fed by git_config*() callback mechanism, they
2235 * are already normalized. So simply add them without any further munging.
2236 */
2237 if (!e) {
2238 e = xmalloc(sizeof(*e));
2239 hashmap_entry_init(&e->ent, strhash(key));
2240 e->key = xstrdup(key);
2241 string_list_init_dup(&e->value_list);
2242 hashmap_add(&set->config_hash, &e->ent);
2243 }
2244 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
2245
2246 ALLOC_GROW(set->list.items, set->list.nr + 1, set->list.alloc);
2247 l_item = &set->list.items[set->list.nr++];
2248 l_item->e = e;
2249 l_item->value_index = e->value_list.nr - 1;
2250
2251 *kv_info = *kvi_p;
2252 si->util = kv_info;
2253
2254 return 0;
2255 }
2256
2257 static int config_set_element_cmp(const void *cmp_data UNUSED,
2258 const struct hashmap_entry *eptr,
2259 const struct hashmap_entry *entry_or_key,
2260 const void *keydata UNUSED)
2261 {
2262 const struct config_set_element *e1, *e2;
2263
2264 e1 = container_of(eptr, const struct config_set_element, ent);
2265 e2 = container_of(entry_or_key, const struct config_set_element, ent);
2266
2267 return strcmp(e1->key, e2->key);
2268 }
2269
2270 void git_configset_init(struct config_set *set)
2271 {
2272 hashmap_init(&set->config_hash, config_set_element_cmp, NULL, 0);
2273 set->hash_initialized = 1;
2274 set->list.nr = 0;
2275 set->list.alloc = 0;
2276 set->list.items = NULL;
2277 }
2278
2279 void git_configset_clear(struct config_set *set)
2280 {
2281 struct config_set_element *entry;
2282 struct hashmap_iter iter;
2283 if (!set->hash_initialized)
2284 return;
2285
2286 hashmap_for_each_entry(&set->config_hash, &iter, entry,
2287 ent /* member name */) {
2288 free(entry->key);
2289 string_list_clear(&entry->value_list, 1);
2290 }
2291 hashmap_clear_and_free(&set->config_hash, struct config_set_element, ent);
2292 set->hash_initialized = 0;
2293 free(set->list.items);
2294 set->list.nr = 0;
2295 set->list.alloc = 0;
2296 set->list.items = NULL;
2297 }
2298
2299 static int config_set_callback(const char *key, const char *value,
2300 const struct config_context *ctx,
2301 void *cb)
2302 {
2303 struct config_set *set = cb;
2304 configset_add_value(ctx->kvi, set, key, value);
2305 return 0;
2306 }
2307
2308 int git_configset_add_file(struct config_set *set, const char *filename)
2309 {
2310 return git_config_from_file(config_set_callback, filename, set);
2311 }
2312
2313 int git_configset_get_value(struct config_set *set, const char *key,
2314 const char **value, struct key_value_info *kvi)
2315 {
2316 const struct string_list *values = NULL;
2317 int ret;
2318 struct string_list_item item;
2319 /*
2320 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
2321 * queried key in the files of the configset, the value returned will be the last
2322 * value in the value list for that key.
2323 */
2324 if ((ret = git_configset_get_value_multi(set, key, &values)))
2325 return ret;
2326
2327 assert(values->nr > 0);
2328 item = values->items[values->nr - 1];
2329 *value = item.string;
2330 if (kvi)
2331 *kvi = *((struct key_value_info *)item.util);
2332 return 0;
2333 }
2334
2335 int git_configset_get_value_multi(struct config_set *set, const char *key,
2336 const struct string_list **dest)
2337 {
2338 struct config_set_element *e;
2339 int ret;
2340
2341 if ((ret = configset_find_element(set, key, &e)))
2342 return ret;
2343 else if (!e)
2344 return 1;
2345 *dest = &e->value_list;
2346
2347 return 0;
2348 }
2349
2350 static int check_multi_string(struct string_list_item *item, void *util)
2351 {
2352 return item->string ? 0 : config_error_nonbool(util);
2353 }
2354
2355 int git_configset_get_string_multi(struct config_set *cs, const char *key,
2356 const struct string_list **dest)
2357 {
2358 int ret;
2359
2360 if ((ret = git_configset_get_value_multi(cs, key, dest)))
2361 return ret;
2362 if ((ret = for_each_string_list((struct string_list *)*dest,
2363 check_multi_string, (void *)key)))
2364 return ret;
2365
2366 return 0;
2367 }
2368
2369 int git_configset_get(struct config_set *set, const char *key)
2370 {
2371 struct config_set_element *e;
2372 int ret;
2373
2374 if ((ret = configset_find_element(set, key, &e)))
2375 return ret;
2376 else if (!e)
2377 return 1;
2378 return 0;
2379 }
2380
2381 int git_configset_get_string(struct config_set *set, const char *key, char **dest)
2382 {
2383 const char *value;
2384 if (!git_configset_get_value(set, key, &value, NULL))
2385 return git_config_string((const char **)dest, key, value);
2386 else
2387 return 1;
2388 }
2389
2390 static int git_configset_get_string_tmp(struct config_set *set, const char *key,
2391 const char **dest)
2392 {
2393 const char *value;
2394 if (!git_configset_get_value(set, key, &value, NULL)) {
2395 if (!value)
2396 return config_error_nonbool(key);
2397 *dest = value;
2398 return 0;
2399 } else {
2400 return 1;
2401 }
2402 }
2403
2404 int git_configset_get_int(struct config_set *set, const char *key, int *dest)
2405 {
2406 const char *value;
2407 struct key_value_info kvi;
2408
2409 if (!git_configset_get_value(set, key, &value, &kvi)) {
2410 *dest = git_config_int(key, value, &kvi);
2411 return 0;
2412 } else
2413 return 1;
2414 }
2415
2416 int git_configset_get_ulong(struct config_set *set, const char *key, unsigned long *dest)
2417 {
2418 const char *value;
2419 struct key_value_info kvi;
2420
2421 if (!git_configset_get_value(set, key, &value, &kvi)) {
2422 *dest = git_config_ulong(key, value, &kvi);
2423 return 0;
2424 } else
2425 return 1;
2426 }
2427
2428 int git_configset_get_bool(struct config_set *set, const char *key, int *dest)
2429 {
2430 const char *value;
2431 if (!git_configset_get_value(set, key, &value, NULL)) {
2432 *dest = git_config_bool(key, value);
2433 return 0;
2434 } else
2435 return 1;
2436 }
2437
2438 int git_configset_get_bool_or_int(struct config_set *set, const char *key,
2439 int *is_bool, int *dest)
2440 {
2441 const char *value;
2442 struct key_value_info kvi;
2443
2444 if (!git_configset_get_value(set, key, &value, &kvi)) {
2445 *dest = git_config_bool_or_int(key, value, &kvi, is_bool);
2446 return 0;
2447 } else
2448 return 1;
2449 }
2450
2451 int git_configset_get_maybe_bool(struct config_set *set, const char *key, int *dest)
2452 {
2453 const char *value;
2454 if (!git_configset_get_value(set, key, &value, NULL)) {
2455 *dest = git_parse_maybe_bool(value);
2456 if (*dest == -1)
2457 return -1;
2458 return 0;
2459 } else
2460 return 1;
2461 }
2462
2463 int git_configset_get_pathname(struct config_set *set, const char *key, const char **dest)
2464 {
2465 const char *value;
2466 if (!git_configset_get_value(set, key, &value, NULL))
2467 return git_config_pathname(dest, key, value);
2468 else
2469 return 1;
2470 }
2471
2472 /* Functions use to read configuration from a repository */
2473 static void repo_read_config(struct repository *repo)
2474 {
2475 struct config_options opts = { 0 };
2476
2477 opts.respect_includes = 1;
2478 opts.commondir = repo->commondir;
2479 opts.git_dir = repo->gitdir;
2480
2481 if (!repo->config)
2482 CALLOC_ARRAY(repo->config, 1);
2483 else
2484 git_configset_clear(repo->config);
2485
2486 git_configset_init(repo->config);
2487 if (config_with_options(config_set_callback, repo->config, NULL,
2488 repo, &opts) < 0)
2489 /*
2490 * config_with_options() normally returns only
2491 * zero, as most errors are fatal, and
2492 * non-fatal potential errors are guarded by "if"
2493 * statements that are entered only when no error is
2494 * possible.
2495 *
2496 * If we ever encounter a non-fatal error, it means
2497 * something went really wrong and we should stop
2498 * immediately.
2499 */
2500 die(_("unknown error occurred while reading the configuration files"));
2501 }
2502
2503 static void git_config_check_init(struct repository *repo)
2504 {
2505 if (repo->config && repo->config->hash_initialized)
2506 return;
2507 repo_read_config(repo);
2508 }
2509
2510 static void repo_config_clear(struct repository *repo)
2511 {
2512 if (!repo->config || !repo->config->hash_initialized)
2513 return;
2514 git_configset_clear(repo->config);
2515 }
2516
2517 void repo_config(struct repository *repo, config_fn_t fn, void *data)
2518 {
2519 git_config_check_init(repo);
2520 configset_iter(repo->config, fn, data);
2521 }
2522
2523 int repo_config_get(struct repository *repo, const char *key)
2524 {
2525 git_config_check_init(repo);
2526 return git_configset_get(repo->config, key);
2527 }
2528
2529 int repo_config_get_value(struct repository *repo,
2530 const char *key, const char **value)
2531 {
2532 git_config_check_init(repo);
2533 return git_configset_get_value(repo->config, key, value, NULL);
2534 }
2535
2536 int repo_config_get_value_multi(struct repository *repo, const char *key,
2537 const struct string_list **dest)
2538 {
2539 git_config_check_init(repo);
2540 return git_configset_get_value_multi(repo->config, key, dest);
2541 }
2542
2543 int repo_config_get_string_multi(struct repository *repo, const char *key,
2544 const struct string_list **dest)
2545 {
2546 git_config_check_init(repo);
2547 return git_configset_get_string_multi(repo->config, key, dest);
2548 }
2549
2550 int repo_config_get_string(struct repository *repo,
2551 const char *key, char **dest)
2552 {
2553 int ret;
2554 git_config_check_init(repo);
2555 ret = git_configset_get_string(repo->config, key, dest);
2556 if (ret < 0)
2557 git_die_config(key, NULL);
2558 return ret;
2559 }
2560
2561 int repo_config_get_string_tmp(struct repository *repo,
2562 const char *key, const char **dest)
2563 {
2564 int ret;
2565 git_config_check_init(repo);
2566 ret = git_configset_get_string_tmp(repo->config, key, dest);
2567 if (ret < 0)
2568 git_die_config(key, NULL);
2569 return ret;
2570 }
2571
2572 int repo_config_get_int(struct repository *repo,
2573 const char *key, int *dest)
2574 {
2575 git_config_check_init(repo);
2576 return git_configset_get_int(repo->config, key, dest);
2577 }
2578
2579 int repo_config_get_ulong(struct repository *repo,
2580 const char *key, unsigned long *dest)
2581 {
2582 git_config_check_init(repo);
2583 return git_configset_get_ulong(repo->config, key, dest);
2584 }
2585
2586 int repo_config_get_bool(struct repository *repo,
2587 const char *key, int *dest)
2588 {
2589 git_config_check_init(repo);
2590 return git_configset_get_bool(repo->config, key, dest);
2591 }
2592
2593 int repo_config_get_bool_or_int(struct repository *repo,
2594 const char *key, int *is_bool, int *dest)
2595 {
2596 git_config_check_init(repo);
2597 return git_configset_get_bool_or_int(repo->config, key, is_bool, dest);
2598 }
2599
2600 int repo_config_get_maybe_bool(struct repository *repo,
2601 const char *key, int *dest)
2602 {
2603 git_config_check_init(repo);
2604 return git_configset_get_maybe_bool(repo->config, key, dest);
2605 }
2606
2607 int repo_config_get_pathname(struct repository *repo,
2608 const char *key, const char **dest)
2609 {
2610 int ret;
2611 git_config_check_init(repo);
2612 ret = git_configset_get_pathname(repo->config, key, dest);
2613 if (ret < 0)
2614 git_die_config(key, NULL);
2615 return ret;
2616 }
2617
2618 /* Read values into protected_config. */
2619 static void read_protected_config(void)
2620 {
2621 struct config_options opts = {
2622 .respect_includes = 1,
2623 .ignore_repo = 1,
2624 .ignore_worktree = 1,
2625 .system_gently = 1,
2626 };
2627
2628 git_configset_init(&protected_config);
2629 config_with_options(config_set_callback, &protected_config, NULL,
2630 NULL, &opts);
2631 }
2632
2633 void git_protected_config(config_fn_t fn, void *data)
2634 {
2635 if (!protected_config.hash_initialized)
2636 read_protected_config();
2637 configset_iter(&protected_config, fn, data);
2638 }
2639
2640 /* Functions used historically to read configuration from 'the_repository' */
2641 void git_config(config_fn_t fn, void *data)
2642 {
2643 repo_config(the_repository, fn, data);
2644 }
2645
2646 void git_config_clear(void)
2647 {
2648 repo_config_clear(the_repository);
2649 }
2650
2651 int git_config_get(const char *key)
2652 {
2653 return repo_config_get(the_repository, key);
2654 }
2655
2656 int git_config_get_value(const char *key, const char **value)
2657 {
2658 return repo_config_get_value(the_repository, key, value);
2659 }
2660
2661 int git_config_get_value_multi(const char *key, const struct string_list **dest)
2662 {
2663 return repo_config_get_value_multi(the_repository, key, dest);
2664 }
2665
2666 int git_config_get_string_multi(const char *key,
2667 const struct string_list **dest)
2668 {
2669 return repo_config_get_string_multi(the_repository, key, dest);
2670 }
2671
2672 int git_config_get_string(const char *key, char **dest)
2673 {
2674 return repo_config_get_string(the_repository, key, dest);
2675 }
2676
2677 int git_config_get_string_tmp(const char *key, const char **dest)
2678 {
2679 return repo_config_get_string_tmp(the_repository, key, dest);
2680 }
2681
2682 int git_config_get_int(const char *key, int *dest)
2683 {
2684 return repo_config_get_int(the_repository, key, dest);
2685 }
2686
2687 int git_config_get_ulong(const char *key, unsigned long *dest)
2688 {
2689 return repo_config_get_ulong(the_repository, key, dest);
2690 }
2691
2692 int git_config_get_bool(const char *key, int *dest)
2693 {
2694 return repo_config_get_bool(the_repository, key, dest);
2695 }
2696
2697 int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
2698 {
2699 return repo_config_get_bool_or_int(the_repository, key, is_bool, dest);
2700 }
2701
2702 int git_config_get_maybe_bool(const char *key, int *dest)
2703 {
2704 return repo_config_get_maybe_bool(the_repository, key, dest);
2705 }
2706
2707 int git_config_get_pathname(const char *key, const char **dest)
2708 {
2709 return repo_config_get_pathname(the_repository, key, dest);
2710 }
2711
2712 int git_config_get_expiry(const char *key, const char **output)
2713 {
2714 int ret = git_config_get_string(key, (char **)output);
2715 if (ret)
2716 return ret;
2717 if (strcmp(*output, "now")) {
2718 timestamp_t now = approxidate("now");
2719 if (approxidate(*output) >= now)
2720 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
2721 }
2722 return ret;
2723 }
2724
2725 int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestamp_t now)
2726 {
2727 const char *expiry_string;
2728 intmax_t days;
2729 timestamp_t when;
2730
2731 if (git_config_get_string_tmp(key, &expiry_string))
2732 return 1; /* no such thing */
2733
2734 if (git_parse_signed(expiry_string, &days, maximum_signed_value_of_type(int))) {
2735 const int scale = 86400;
2736 *expiry = now - days * scale;
2737 return 0;
2738 }
2739
2740 if (!parse_expiry_date(expiry_string, &when)) {
2741 *expiry = when;
2742 return 0;
2743 }
2744 return -1; /* thing exists but cannot be parsed */
2745 }
2746
2747 int git_config_get_split_index(void)
2748 {
2749 int val;
2750
2751 if (!git_config_get_maybe_bool("core.splitindex", &val))
2752 return val;
2753
2754 return -1; /* default value */
2755 }
2756
2757 int git_config_get_max_percent_split_change(void)
2758 {
2759 int val = -1;
2760
2761 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2762 if (0 <= val && val <= 100)
2763 return val;
2764
2765 return error(_("splitIndex.maxPercentChange value '%d' "
2766 "should be between 0 and 100"), val);
2767 }
2768
2769 return -1; /* default value */
2770 }
2771
2772 int git_config_get_index_threads(int *dest)
2773 {
2774 int is_bool, val;
2775
2776 val = git_env_ulong("GIT_TEST_INDEX_THREADS", 0);
2777 if (val) {
2778 *dest = val;
2779 return 0;
2780 }
2781
2782 if (!git_config_get_bool_or_int("index.threads", &is_bool, &val)) {
2783 if (is_bool)
2784 *dest = val ? 0 : 1;
2785 else
2786 *dest = val;
2787 return 0;
2788 }
2789
2790 return 1;
2791 }
2792
2793 NORETURN
2794 void git_die_config_linenr(const char *key, const char *filename, int linenr)
2795 {
2796 if (!filename)
2797 die(_("unable to parse '%s' from command-line config"), key);
2798 else
2799 die(_("bad config variable '%s' in file '%s' at line %d"),
2800 key, filename, linenr);
2801 }
2802
2803 NORETURN __attribute__((format(printf, 2, 3)))
2804 void git_die_config(const char *key, const char *err, ...)
2805 {
2806 const struct string_list *values;
2807 struct key_value_info *kv_info;
2808 report_fn error_fn = get_error_routine();
2809
2810 if (err) {
2811 va_list params;
2812 va_start(params, err);
2813 error_fn(err, params);
2814 va_end(params);
2815 }
2816 if (git_config_get_value_multi(key, &values))
2817 BUG("for key '%s' we must have a value to report on", key);
2818 kv_info = values->items[values->nr - 1].util;
2819 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
2820 }
2821
2822 /*
2823 * Find all the stuff for git_config_set() below.
2824 */
2825
2826 struct config_store_data {
2827 size_t baselen;
2828 char *key;
2829 int do_not_match;
2830 const char *fixed_value;
2831 regex_t *value_pattern;
2832 int multi_replace;
2833 struct {
2834 size_t begin, end;
2835 enum config_event_t type;
2836 int is_keys_section;
2837 } *parsed;
2838 unsigned int parsed_nr, parsed_alloc, *seen, seen_nr, seen_alloc;
2839 unsigned int key_seen:1, section_seen:1, is_keys_section:1;
2840 };
2841 #define CONFIG_STORE_INIT { 0 }
2842
2843 static void config_store_data_clear(struct config_store_data *store)
2844 {
2845 free(store->key);
2846 if (store->value_pattern != NULL &&
2847 store->value_pattern != CONFIG_REGEX_NONE) {
2848 regfree(store->value_pattern);
2849 free(store->value_pattern);
2850 }
2851 free(store->parsed);
2852 free(store->seen);
2853 memset(store, 0, sizeof(*store));
2854 }
2855
2856 static int matches(const char *key, const char *value,
2857 const struct config_store_data *store)
2858 {
2859 if (strcmp(key, store->key))
2860 return 0; /* not ours */
2861 if (store->fixed_value)
2862 return !strcmp(store->fixed_value, value);
2863 if (!store->value_pattern)
2864 return 1; /* always matches */
2865 if (store->value_pattern == CONFIG_REGEX_NONE)
2866 return 0; /* never matches */
2867
2868 return store->do_not_match ^
2869 (value && !regexec(store->value_pattern, value, 0, NULL, 0));
2870 }
2871
2872 static int store_aux_event(enum config_event_t type, size_t begin, size_t end,
2873 struct config_source *cs, void *data)
2874 {
2875 struct config_store_data *store = data;
2876
2877 ALLOC_GROW(store->parsed, store->parsed_nr + 1, store->parsed_alloc);
2878 store->parsed[store->parsed_nr].begin = begin;
2879 store->parsed[store->parsed_nr].end = end;
2880 store->parsed[store->parsed_nr].type = type;
2881
2882 if (type == CONFIG_EVENT_SECTION) {
2883 int (*cmpfn)(const char *, const char *, size_t);
2884
2885 if (cs->var.len < 2 || cs->var.buf[cs->var.len - 1] != '.')
2886 return error(_("invalid section name '%s'"), cs->var.buf);
2887
2888 if (cs->subsection_case_sensitive)
2889 cmpfn = strncasecmp;
2890 else
2891 cmpfn = strncmp;
2892
2893 /* Is this the section we were looking for? */
2894 store->is_keys_section =
2895 store->parsed[store->parsed_nr].is_keys_section =
2896 cs->var.len - 1 == store->baselen &&
2897 !cmpfn(cs->var.buf, store->key, store->baselen);
2898 if (store->is_keys_section) {
2899 store->section_seen = 1;
2900 ALLOC_GROW(store->seen, store->seen_nr + 1,
2901 store->seen_alloc);
2902 store->seen[store->seen_nr] = store->parsed_nr;
2903 }
2904 }
2905
2906 store->parsed_nr++;
2907
2908 return 0;
2909 }
2910
2911 static int store_aux(const char *key, const char *value,
2912 const struct config_context *ctx UNUSED, void *cb)
2913 {
2914 struct config_store_data *store = cb;
2915
2916 if (store->key_seen) {
2917 if (matches(key, value, store)) {
2918 if (store->seen_nr == 1 && store->multi_replace == 0) {
2919 warning(_("%s has multiple values"), key);
2920 }
2921
2922 ALLOC_GROW(store->seen, store->seen_nr + 1,
2923 store->seen_alloc);
2924
2925 store->seen[store->seen_nr] = store->parsed_nr;
2926 store->seen_nr++;
2927 }
2928 } else if (store->is_keys_section) {
2929 /*
2930 * Do not increment matches yet: this may not be a match, but we
2931 * are in the desired section.
2932 */
2933 ALLOC_GROW(store->seen, store->seen_nr + 1, store->seen_alloc);
2934 store->seen[store->seen_nr] = store->parsed_nr;
2935 store->section_seen = 1;
2936
2937 if (matches(key, value, store)) {
2938 store->seen_nr++;
2939 store->key_seen = 1;
2940 }
2941 }
2942
2943 return 0;
2944 }
2945
2946 static int write_error(const char *filename)
2947 {
2948 error(_("failed to write new configuration file %s"), filename);
2949
2950 /* Same error code as "failed to rename". */
2951 return 4;
2952 }
2953
2954 static struct strbuf store_create_section(const char *key,
2955 const struct config_store_data *store)
2956 {
2957 const char *dot;
2958 size_t i;
2959 struct strbuf sb = STRBUF_INIT;
2960
2961 dot = memchr(key, '.', store->baselen);
2962 if (dot) {
2963 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
2964 for (i = dot - key + 1; i < store->baselen; i++) {
2965 if (key[i] == '"' || key[i] == '\\')
2966 strbuf_addch(&sb, '\\');
2967 strbuf_addch(&sb, key[i]);
2968 }
2969 strbuf_addstr(&sb, "\"]\n");
2970 } else {
2971 strbuf_addch(&sb, '[');
2972 strbuf_add(&sb, key, store->baselen);
2973 strbuf_addstr(&sb, "]\n");
2974 }
2975
2976 return sb;
2977 }
2978
2979 static ssize_t write_section(int fd, const char *key,
2980 const struct config_store_data *store)
2981 {
2982 struct strbuf sb = store_create_section(key, store);
2983 ssize_t ret;
2984
2985 ret = write_in_full(fd, sb.buf, sb.len);
2986 strbuf_release(&sb);
2987
2988 return ret;
2989 }
2990
2991 static ssize_t write_pair(int fd, const char *key, const char *value,
2992 const struct config_store_data *store)
2993 {
2994 int i;
2995 ssize_t ret;
2996 const char *quote = "";
2997 struct strbuf sb = STRBUF_INIT;
2998
2999 /*
3000 * Check to see if the value needs to be surrounded with a dq pair.
3001 * Note that problematic characters are always backslash-quoted; this
3002 * check is about not losing leading or trailing SP and strings that
3003 * follow beginning-of-comment characters (i.e. ';' and '#') by the
3004 * configuration parser.
3005 */
3006 if (value[0] == ' ')
3007 quote = "\"";
3008 for (i = 0; value[i]; i++)
3009 if (value[i] == ';' || value[i] == '#')
3010 quote = "\"";
3011 if (i && value[i - 1] == ' ')
3012 quote = "\"";
3013
3014 strbuf_addf(&sb, "\t%s = %s", key + store->baselen + 1, quote);
3015
3016 for (i = 0; value[i]; i++)
3017 switch (value[i]) {
3018 case '\n':
3019 strbuf_addstr(&sb, "\\n");
3020 break;
3021 case '\t':
3022 strbuf_addstr(&sb, "\\t");
3023 break;
3024 case '"':
3025 case '\\':
3026 strbuf_addch(&sb, '\\');
3027 /* fallthrough */
3028 default:
3029 strbuf_addch(&sb, value[i]);
3030 break;
3031 }
3032 strbuf_addf(&sb, "%s\n", quote);
3033
3034 ret = write_in_full(fd, sb.buf, sb.len);
3035 strbuf_release(&sb);
3036
3037 return ret;
3038 }
3039
3040 /*
3041 * If we are about to unset the last key(s) in a section, and if there are
3042 * no comments surrounding (or included in) the section, we will want to
3043 * extend begin/end to remove the entire section.
3044 *
3045 * Note: the parameter `seen_ptr` points to the index into the store.seen
3046 * array. * This index may be incremented if a section has more than one
3047 * entry (which all are to be removed).
3048 */
3049 static void maybe_remove_section(struct config_store_data *store,
3050 size_t *begin_offset, size_t *end_offset,
3051 int *seen_ptr)
3052 {
3053 size_t begin;
3054 int i, seen, section_seen = 0;
3055
3056 /*
3057 * First, ensure that this is the first key, and that there are no
3058 * comments before the entry nor before the section header.
3059 */
3060 seen = *seen_ptr;
3061 for (i = store->seen[seen]; i > 0; i--) {
3062 enum config_event_t type = store->parsed[i - 1].type;
3063
3064 if (type == CONFIG_EVENT_COMMENT)
3065 /* There is a comment before this entry or section */
3066 return;
3067 if (type == CONFIG_EVENT_ENTRY) {
3068 if (!section_seen)
3069 /* This is not the section's first entry. */
3070 return;
3071 /* We encountered no comment before the section. */
3072 break;
3073 }
3074 if (type == CONFIG_EVENT_SECTION) {
3075 if (!store->parsed[i - 1].is_keys_section)
3076 break;
3077 section_seen = 1;
3078 }
3079 }
3080 begin = store->parsed[i].begin;
3081
3082 /*
3083 * Next, make sure that we are removing the last key(s) in the section,
3084 * and that there are no comments that are possibly about the current
3085 * section.
3086 */
3087 for (i = store->seen[seen] + 1; i < store->parsed_nr; i++) {
3088 enum config_event_t type = store->parsed[i].type;
3089
3090 if (type == CONFIG_EVENT_COMMENT)
3091 return;
3092 if (type == CONFIG_EVENT_SECTION) {
3093 if (store->parsed[i].is_keys_section)
3094 continue;
3095 break;
3096 }
3097 if (type == CONFIG_EVENT_ENTRY) {
3098 if (++seen < store->seen_nr &&
3099 i == store->seen[seen])
3100 /* We want to remove this entry, too */
3101 continue;
3102 /* There is another entry in this section. */
3103 return;
3104 }
3105 }
3106
3107 /*
3108 * We are really removing the last entry/entries from this section, and
3109 * there are no enclosed or surrounding comments. Remove the entire,
3110 * now-empty section.
3111 */
3112 *seen_ptr = seen;
3113 *begin_offset = begin;
3114 if (i < store->parsed_nr)
3115 *end_offset = store->parsed[i].begin;
3116 else
3117 *end_offset = store->parsed[store->parsed_nr - 1].end;
3118 }
3119
3120 int git_config_set_in_file_gently(const char *config_filename,
3121 const char *key, const char *value)
3122 {
3123 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
3124 }
3125
3126 void git_config_set_in_file(const char *config_filename,
3127 const char *key, const char *value)
3128 {
3129 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
3130 }
3131
3132 int git_config_set_gently(const char *key, const char *value)
3133 {
3134 return git_config_set_multivar_gently(key, value, NULL, 0);
3135 }
3136
3137 int repo_config_set_worktree_gently(struct repository *r,
3138 const char *key, const char *value)
3139 {
3140 /* Only use worktree-specific config if it is already enabled. */
3141 if (r->repository_format_worktree_config) {
3142 char *file = repo_git_path(r, "config.worktree");
3143 int ret = git_config_set_multivar_in_file_gently(
3144 file, key, value, NULL, 0);
3145 free(file);
3146 return ret;
3147 }
3148 return repo_config_set_multivar_gently(r, key, value, NULL, 0);
3149 }
3150
3151 void git_config_set(const char *key, const char *value)
3152 {
3153 git_config_set_multivar(key, value, NULL, 0);
3154
3155 trace2_cmd_set_config(key, value);
3156 }
3157
3158 /*
3159 * If value==NULL, unset in (remove from) config,
3160 * if value_pattern!=NULL, disregard key/value pairs where value does not match.
3161 * if value_pattern==CONFIG_REGEX_NONE, do not match any existing values
3162 * (only add a new one)
3163 * if flags contains the CONFIG_FLAGS_MULTI_REPLACE flag, all matching
3164 * key/values are removed before a single new pair is written. If the
3165 * flag is not present, then replace only the first match.
3166 *
3167 * Returns 0 on success.
3168 *
3169 * This function does this:
3170 *
3171 * - it locks the config file by creating ".git/config.lock"
3172 *
3173 * - it then parses the config using store_aux() as validator to find
3174 * the position on the key/value pair to replace. If it is to be unset,
3175 * it must be found exactly once.
3176 *
3177 * - the config file is mmap()ed and the part before the match (if any) is
3178 * written to the lock file, then the changed part and the rest.
3179 *
3180 * - the config file is removed and the lock file rename()d to it.
3181 *
3182 */
3183 int git_config_set_multivar_in_file_gently(const char *config_filename,
3184 const char *key, const char *value,
3185 const char *value_pattern,
3186 unsigned flags)
3187 {
3188 int fd = -1, in_fd = -1;
3189 int ret;
3190 struct lock_file lock = LOCK_INIT;
3191 char *filename_buf = NULL;
3192 char *contents = NULL;
3193 size_t contents_sz;
3194 struct config_store_data store = CONFIG_STORE_INIT;
3195
3196 /* parse-key returns negative; flip the sign to feed exit(3) */
3197 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
3198 if (ret)
3199 goto out_free;
3200
3201 store.multi_replace = (flags & CONFIG_FLAGS_MULTI_REPLACE) != 0;
3202
3203 if (!config_filename)
3204 config_filename = filename_buf = git_pathdup("config");
3205
3206 /*
3207 * The lock serves a purpose in addition to locking: the new
3208 * contents of .git/config will be written into it.
3209 */
3210 fd = hold_lock_file_for_update(&lock, config_filename, 0);
3211 if (fd < 0) {
3212 error_errno(_("could not lock config file %s"), config_filename);
3213 ret = CONFIG_NO_LOCK;
3214 goto out_free;
3215 }
3216
3217 /*
3218 * If .git/config does not exist yet, write a minimal version.
3219 */
3220 in_fd = open(config_filename, O_RDONLY);
3221 if ( in_fd < 0 ) {
3222 if ( ENOENT != errno ) {
3223 error_errno(_("opening %s"), config_filename);
3224 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
3225 goto out_free;
3226 }
3227 /* if nothing to unset, error out */
3228 if (!value) {
3229 ret = CONFIG_NOTHING_SET;
3230 goto out_free;
3231 }
3232
3233 free(store.key);
3234 store.key = xstrdup(key);
3235 if (write_section(fd, key, &store) < 0 ||
3236 write_pair(fd, key, value, &store) < 0)
3237 goto write_err_out;
3238 } else {
3239 struct stat st;
3240 size_t copy_begin, copy_end;
3241 int i, new_line = 0;
3242 struct config_options opts;
3243
3244 if (!value_pattern)
3245 store.value_pattern = NULL;
3246 else if (value_pattern == CONFIG_REGEX_NONE)
3247 store.value_pattern = CONFIG_REGEX_NONE;
3248 else if (flags & CONFIG_FLAGS_FIXED_VALUE)
3249 store.fixed_value = value_pattern;
3250 else {
3251 if (value_pattern[0] == '!') {
3252 store.do_not_match = 1;
3253 value_pattern++;
3254 } else
3255 store.do_not_match = 0;
3256
3257 store.value_pattern = (regex_t*)xmalloc(sizeof(regex_t));
3258 if (regcomp(store.value_pattern, value_pattern,
3259 REG_EXTENDED)) {
3260 error(_("invalid pattern: %s"), value_pattern);
3261 FREE_AND_NULL(store.value_pattern);
3262 ret = CONFIG_INVALID_PATTERN;
3263 goto out_free;
3264 }
3265 }
3266
3267 ALLOC_GROW(store.parsed, 1, store.parsed_alloc);
3268 store.parsed[0].end = 0;
3269
3270 memset(&opts, 0, sizeof(opts));
3271 opts.event_fn = store_aux_event;
3272 opts.event_fn_data = &store;
3273
3274 /*
3275 * After this, store.parsed will contain offsets of all the
3276 * parsed elements, and store.seen will contain a list of
3277 * matches, as indices into store.parsed.
3278 *
3279 * As a side effect, we make sure to transform only a valid
3280 * existing config file.
3281 */
3282 if (git_config_from_file_with_options(store_aux,
3283 config_filename,
3284 &store, CONFIG_SCOPE_UNKNOWN,
3285 &opts)) {
3286 error(_("invalid config file %s"), config_filename);
3287 ret = CONFIG_INVALID_FILE;
3288 goto out_free;
3289 }
3290
3291 /* if nothing to unset, or too many matches, error out */
3292 if ((store.seen_nr == 0 && value == NULL) ||
3293 (store.seen_nr > 1 && !store.multi_replace)) {
3294 ret = CONFIG_NOTHING_SET;
3295 goto out_free;
3296 }
3297
3298 if (fstat(in_fd, &st) == -1) {
3299 error_errno(_("fstat on %s failed"), config_filename);
3300 ret = CONFIG_INVALID_FILE;
3301 goto out_free;
3302 }
3303
3304 contents_sz = xsize_t(st.st_size);
3305 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
3306 MAP_PRIVATE, in_fd, 0);
3307 if (contents == MAP_FAILED) {
3308 if (errno == ENODEV && S_ISDIR(st.st_mode))
3309 errno = EISDIR;
3310 error_errno(_("unable to mmap '%s'%s"),
3311 config_filename, mmap_os_err());
3312 ret = CONFIG_INVALID_FILE;
3313 contents = NULL;
3314 goto out_free;
3315 }
3316 close(in_fd);
3317 in_fd = -1;
3318
3319 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
3320 error_errno(_("chmod on %s failed"), get_lock_file_path(&lock));
3321 ret = CONFIG_NO_WRITE;
3322 goto out_free;
3323 }
3324
3325 if (store.seen_nr == 0) {
3326 if (!store.seen_alloc) {
3327 /* Did not see key nor section */
3328 ALLOC_GROW(store.seen, 1, store.seen_alloc);
3329 store.seen[0] = store.parsed_nr
3330 - !!store.parsed_nr;
3331 }
3332 store.seen_nr = 1;
3333 }
3334
3335 for (i = 0, copy_begin = 0; i < store.seen_nr; i++) {
3336 size_t replace_end;
3337 int j = store.seen[i];
3338
3339 new_line = 0;
3340 if (!store.key_seen) {
3341 copy_end = store.parsed[j].end;
3342 /* include '\n' when copying section header */
3343 if (copy_end > 0 && copy_end < contents_sz &&
3344 contents[copy_end - 1] != '\n' &&
3345 contents[copy_end] == '\n')
3346 copy_end++;
3347 replace_end = copy_end;
3348 } else {
3349 replace_end = store.parsed[j].end;
3350 copy_end = store.parsed[j].begin;
3351 if (!value)
3352 maybe_remove_section(&store,
3353 &copy_end,
3354 &replace_end, &i);
3355 /*
3356 * Swallow preceding white-space on the same
3357 * line.
3358 */
3359 while (copy_end > 0 ) {
3360 char c = contents[copy_end - 1];
3361
3362 if (isspace(c) && c != '\n')
3363 copy_end--;
3364 else
3365 break;
3366 }
3367 }
3368
3369 if (copy_end > 0 && contents[copy_end-1] != '\n')
3370 new_line = 1;
3371
3372 /* write the first part of the config */
3373 if (copy_end > copy_begin) {
3374 if (write_in_full(fd, contents + copy_begin,
3375 copy_end - copy_begin) < 0)
3376 goto write_err_out;
3377 if (new_line &&
3378 write_str_in_full(fd, "\n") < 0)
3379 goto write_err_out;
3380 }
3381 copy_begin = replace_end;
3382 }
3383
3384 /* write the pair (value == NULL means unset) */
3385 if (value) {
3386 if (!store.section_seen) {
3387 if (write_section(fd, key, &store) < 0)
3388 goto write_err_out;
3389 }
3390 if (write_pair(fd, key, value, &store) < 0)
3391 goto write_err_out;
3392 }
3393
3394 /* write the rest of the config */
3395 if (copy_begin < contents_sz)
3396 if (write_in_full(fd, contents + copy_begin,
3397 contents_sz - copy_begin) < 0)
3398 goto write_err_out;
3399
3400 munmap(contents, contents_sz);
3401 contents = NULL;
3402 }
3403
3404 if (commit_lock_file(&lock) < 0) {
3405 error_errno(_("could not write config file %s"), config_filename);
3406 ret = CONFIG_NO_WRITE;
3407 goto out_free;
3408 }
3409
3410 ret = 0;
3411
3412 /* Invalidate the config cache */
3413 git_config_clear();
3414
3415 out_free:
3416 rollback_lock_file(&lock);
3417 free(filename_buf);
3418 if (contents)
3419 munmap(contents, contents_sz);
3420 if (in_fd >= 0)
3421 close(in_fd);
3422 config_store_data_clear(&store);
3423 return ret;
3424
3425 write_err_out:
3426 ret = write_error(get_lock_file_path(&lock));
3427 goto out_free;
3428
3429 }
3430
3431 void git_config_set_multivar_in_file(const char *config_filename,
3432 const char *key, const char *value,
3433 const char *value_pattern, unsigned flags)
3434 {
3435 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
3436 value_pattern, flags))
3437 return;
3438 if (value)
3439 die(_("could not set '%s' to '%s'"), key, value);
3440 else
3441 die(_("could not unset '%s'"), key);
3442 }
3443
3444 int git_config_set_multivar_gently(const char *key, const char *value,
3445 const char *value_pattern, unsigned flags)
3446 {
3447 return repo_config_set_multivar_gently(the_repository, key, value,
3448 value_pattern, flags);
3449 }
3450
3451 int repo_config_set_multivar_gently(struct repository *r, const char *key,
3452 const char *value,
3453 const char *value_pattern, unsigned flags)
3454 {
3455 char *file = repo_git_path(r, "config");
3456 int res = git_config_set_multivar_in_file_gently(file,
3457 key, value,
3458 value_pattern,
3459 flags);
3460 free(file);
3461 return res;
3462 }
3463
3464 void git_config_set_multivar(const char *key, const char *value,
3465 const char *value_pattern, unsigned flags)
3466 {
3467 git_config_set_multivar_in_file(git_path("config"),
3468 key, value, value_pattern,
3469 flags);
3470 }
3471
3472 static size_t section_name_match (const char *buf, const char *name)
3473 {
3474 size_t i = 0, j = 0;
3475 int dot = 0;
3476 if (buf[i] != '[')
3477 return 0;
3478 for (i = 1; buf[i] && buf[i] != ']'; i++) {
3479 if (!dot && isspace(buf[i])) {
3480 dot = 1;
3481 if (name[j++] != '.')
3482 break;
3483 for (i++; isspace(buf[i]); i++)
3484 ; /* do nothing */
3485 if (buf[i] != '"')
3486 break;
3487 continue;
3488 }
3489 if (buf[i] == '\\' && dot)
3490 i++;
3491 else if (buf[i] == '"' && dot) {
3492 for (i++; isspace(buf[i]); i++)
3493 ; /* do_nothing */
3494 break;
3495 }
3496 if (buf[i] != name[j++])
3497 break;
3498 }
3499 if (buf[i] == ']' && name[j] == 0) {
3500 /*
3501 * We match, now just find the right length offset by
3502 * gobbling up any whitespace after it, as well
3503 */
3504 i++;
3505 for (; buf[i] && isspace(buf[i]); i++)
3506 ; /* do nothing */
3507 return i;
3508 }
3509 return 0;
3510 }
3511
3512 static int section_name_is_ok(const char *name)
3513 {
3514 /* Empty section names are bogus. */
3515 if (!*name)
3516 return 0;
3517
3518 /*
3519 * Before a dot, we must be alphanumeric or dash. After the first dot,
3520 * anything goes, so we can stop checking.
3521 */
3522 for (; *name && *name != '.'; name++)
3523 if (*name != '-' && !isalnum(*name))
3524 return 0;
3525 return 1;
3526 }
3527
3528 #define GIT_CONFIG_MAX_LINE_LEN (512 * 1024)
3529
3530 /* if new_name == NULL, the section is removed instead */
3531 static int git_config_copy_or_rename_section_in_file(const char *config_filename,
3532 const char *old_name,
3533 const char *new_name, int copy)
3534 {
3535 int ret = 0, remove = 0;
3536 char *filename_buf = NULL;
3537 struct lock_file lock = LOCK_INIT;
3538 int out_fd;
3539 struct strbuf buf = STRBUF_INIT;
3540 FILE *config_file = NULL;
3541 struct stat st;
3542 struct strbuf copystr = STRBUF_INIT;
3543 struct config_store_data store;
3544 uint32_t line_nr = 0;
3545
3546 memset(&store, 0, sizeof(store));
3547
3548 if (new_name && !section_name_is_ok(new_name)) {
3549 ret = error(_("invalid section name: %s"), new_name);
3550 goto out_no_rollback;
3551 }
3552
3553 if (!config_filename)
3554 config_filename = filename_buf = git_pathdup("config");
3555
3556 out_fd = hold_lock_file_for_update(&lock, config_filename, 0);
3557 if (out_fd < 0) {
3558 ret = error(_("could not lock config file %s"), config_filename);
3559 goto out;
3560 }
3561
3562 if (!(config_file = fopen(config_filename, "rb"))) {
3563 ret = warn_on_fopen_errors(config_filename);
3564 if (ret)
3565 goto out;
3566 /* no config file means nothing to rename, no error */
3567 goto commit_and_out;
3568 }
3569
3570 if (fstat(fileno(config_file), &st) == -1) {
3571 ret = error_errno(_("fstat on %s failed"), config_filename);
3572 goto out;
3573 }
3574
3575 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
3576 ret = error_errno(_("chmod on %s failed"),
3577 get_lock_file_path(&lock));
3578 goto out;
3579 }
3580
3581 while (!strbuf_getwholeline(&buf, config_file, '\n')) {
3582 size_t i, length;
3583 int is_section = 0;
3584 char *output = buf.buf;
3585
3586 line_nr++;
3587
3588 if (buf.len >= GIT_CONFIG_MAX_LINE_LEN) {
3589 ret = error(_("refusing to work with overly long line "
3590 "in '%s' on line %"PRIuMAX),
3591 config_filename, (uintmax_t)line_nr);
3592 goto out;
3593 }
3594
3595 for (i = 0; buf.buf[i] && isspace(buf.buf[i]); i++)
3596 ; /* do nothing */
3597 if (buf.buf[i] == '[') {
3598 /* it's a section */
3599 size_t offset;
3600 is_section = 1;
3601
3602 /*
3603 * When encountering a new section under -c we
3604 * need to flush out any section we're already
3605 * coping and begin anew. There might be
3606 * multiple [branch "$name"] sections.
3607 */
3608 if (copystr.len > 0) {
3609 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
3610 ret = write_error(get_lock_file_path(&lock));
3611 goto out;
3612 }
3613 strbuf_reset(&copystr);
3614 }
3615
3616 offset = section_name_match(&buf.buf[i], old_name);
3617 if (offset > 0) {
3618 ret++;
3619 if (!new_name) {
3620 remove = 1;
3621 continue;
3622 }
3623 store.baselen = strlen(new_name);
3624 if (!copy) {
3625 if (write_section(out_fd, new_name, &store) < 0) {
3626 ret = write_error(get_lock_file_path(&lock));
3627 goto out;
3628 }
3629 /*
3630 * We wrote out the new section, with
3631 * a newline, now skip the old
3632 * section's length
3633 */
3634 output += offset + i;
3635 if (strlen(output) > 0) {
3636 /*
3637 * More content means there's
3638 * a declaration to put on the
3639 * next line; indent with a
3640 * tab
3641 */
3642 output -= 1;
3643 output[0] = '\t';
3644 }
3645 } else {
3646 strbuf_release(&copystr);
3647 copystr = store_create_section(new_name, &store);
3648 }
3649 }
3650 remove = 0;
3651 }
3652 if (remove)
3653 continue;
3654 length = strlen(output);
3655
3656 if (!is_section && copystr.len > 0) {
3657 strbuf_add(&copystr, output, length);
3658 }
3659
3660 if (write_in_full(out_fd, output, length) < 0) {
3661 ret = write_error(get_lock_file_path(&lock));
3662 goto out;
3663 }
3664 }
3665
3666 /*
3667 * Copy a trailing section at the end of the config, won't be
3668 * flushed by the usual "flush because we have a new section
3669 * logic in the loop above.
3670 */
3671 if (copystr.len > 0) {
3672 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
3673 ret = write_error(get_lock_file_path(&lock));
3674 goto out;
3675 }
3676 strbuf_reset(&copystr);
3677 }
3678
3679 fclose(config_file);
3680 config_file = NULL;
3681 commit_and_out:
3682 if (commit_lock_file(&lock) < 0)
3683 ret = error_errno(_("could not write config file %s"),
3684 config_filename);
3685 out:
3686 if (config_file)
3687 fclose(config_file);
3688 rollback_lock_file(&lock);
3689 out_no_rollback:
3690 free(filename_buf);
3691 config_store_data_clear(&store);
3692 strbuf_release(&buf);
3693 strbuf_release(&copystr);
3694 return ret;
3695 }
3696
3697 int git_config_rename_section_in_file(const char *config_filename,
3698 const char *old_name, const char *new_name)
3699 {
3700 return git_config_copy_or_rename_section_in_file(config_filename,
3701 old_name, new_name, 0);
3702 }
3703
3704 int git_config_rename_section(const char *old_name, const char *new_name)
3705 {
3706 return git_config_rename_section_in_file(NULL, old_name, new_name);
3707 }
3708
3709 int git_config_copy_section_in_file(const char *config_filename,
3710 const char *old_name, const char *new_name)
3711 {
3712 return git_config_copy_or_rename_section_in_file(config_filename,
3713 old_name, new_name, 1);
3714 }
3715
3716 int git_config_copy_section(const char *old_name, const char *new_name)
3717 {
3718 return git_config_copy_section_in_file(NULL, old_name, new_name);
3719 }
3720
3721 /*
3722 * Call this to report error for your variable that should not
3723 * get a boolean value (i.e. "[my] var" means "true").
3724 */
3725 #undef config_error_nonbool
3726 int config_error_nonbool(const char *var)
3727 {
3728 return error(_("missing value for '%s'"), var);
3729 }
3730
3731 int parse_config_key(const char *var,
3732 const char *section,
3733 const char **subsection, size_t *subsection_len,
3734 const char **key)
3735 {
3736 const char *dot;
3737
3738 /* Does it start with "section." ? */
3739 if (!skip_prefix(var, section, &var) || *var != '.')
3740 return -1;
3741
3742 /*
3743 * Find the key; we don't know yet if we have a subsection, but we must
3744 * parse backwards from the end, since the subsection may have dots in
3745 * it, too.
3746 */
3747 dot = strrchr(var, '.');
3748 *key = dot + 1;
3749
3750 /* Did we have a subsection at all? */
3751 if (dot == var) {
3752 if (subsection) {
3753 *subsection = NULL;
3754 *subsection_len = 0;
3755 }
3756 }
3757 else {
3758 if (!subsection)
3759 return -1;
3760 *subsection = var + 1;
3761 *subsection_len = dot - *subsection;
3762 }
3763
3764 return 0;
3765 }
3766
3767 const char *config_origin_type_name(enum config_origin_type type)
3768 {
3769 switch (type) {
3770 case CONFIG_ORIGIN_BLOB:
3771 return "blob";
3772 case CONFIG_ORIGIN_FILE:
3773 return "file";
3774 case CONFIG_ORIGIN_STDIN:
3775 return "standard input";
3776 case CONFIG_ORIGIN_SUBMODULE_BLOB:
3777 return "submodule-blob";
3778 case CONFIG_ORIGIN_CMDLINE:
3779 return "command line";
3780 default:
3781 BUG("unknown config origin type");
3782 }
3783 }
3784
3785 const char *config_scope_name(enum config_scope scope)
3786 {
3787 switch (scope) {
3788 case CONFIG_SCOPE_SYSTEM:
3789 return "system";
3790 case CONFIG_SCOPE_GLOBAL:
3791 return "global";
3792 case CONFIG_SCOPE_LOCAL:
3793 return "local";
3794 case CONFIG_SCOPE_WORKTREE:
3795 return "worktree";
3796 case CONFIG_SCOPE_COMMAND:
3797 return "command";
3798 case CONFIG_SCOPE_SUBMODULE:
3799 return "submodule";
3800 default:
3801 return "unknown";
3802 }
3803 }
3804
3805 int lookup_config(const char **mapping, int nr_mapping, const char *var)
3806 {
3807 int i;
3808
3809 for (i = 0; i < nr_mapping; i++) {
3810 const char *name = mapping[i];
3811
3812 if (name && !strcasecmp(var, name))
3813 return i;
3814 }
3815 return -1;
3816 }
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