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-rw-r--r--config.c175
1 files changed, 125 insertions, 50 deletions
diff --git a/config.c b/config.c
index 83c913ad09..248a21ab94 100644
--- a/config.c
+++ b/config.c
@@ -6,11 +6,13 @@
*
*/
#include "cache.h"
+#include "lockfile.h"
#include "exec_cmd.h"
#include "strbuf.h"
#include "quote.h"
#include "hashmap.h"
#include "string-list.h"
+#include "utf8.h"
struct config_source {
struct config_source *prev;
@@ -48,7 +50,7 @@ static struct config_set the_config_set;
static int config_file_fgetc(struct config_source *conf)
{
- return fgetc(conf->u.file);
+ return getc_unlocked(conf->u.file);
}
static int config_file_ungetc(int c, struct config_source *conf)
@@ -72,8 +74,12 @@ static int config_buf_fgetc(struct config_source *conf)
static int config_buf_ungetc(int c, struct config_source *conf)
{
- if (conf->u.buf.pos > 0)
- return conf->u.buf.buf[--conf->u.buf.pos];
+ if (conf->u.buf.pos > 0) {
+ conf->u.buf.pos--;
+ if (conf->u.buf.buf[conf->u.buf.pos] != c)
+ die("BUG: config_buf can only ungetc the same character");
+ return c;
+ }
return EOF;
}
@@ -136,7 +142,6 @@ static int handle_path_include(const char *path, struct config_include_data *inc
int git_config_include(const char *var, const char *value, void *data)
{
struct config_include_data *inc = data;
- const char *type;
int ret;
/*
@@ -147,10 +152,7 @@ int git_config_include(const char *var, const char *value, void *data)
if (ret < 0)
return ret;
- if (!skip_prefix(var, "include.", &type))
- return ret;
-
- if (!strcmp(type, "path"))
+ if (!strcmp(var, "include.path"))
ret = handle_path_include(value, inc);
return ret;
}
@@ -238,7 +240,8 @@ static int get_next_char(void)
/* DOS like systems */
c = cf->do_fgetc(cf);
if (c != '\n') {
- cf->do_ungetc(c, cf);
+ if (c != EOF)
+ cf->do_ungetc(c, cf);
c = '\r';
}
}
@@ -415,8 +418,7 @@ static int git_parse_source(config_fn_t fn, void *data)
struct strbuf *var = &cf->var;
/* U+FEFF Byte Order Mark in UTF8 */
- static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
- const unsigned char *bomptr = utf8_bom;
+ const char *bomptr = utf8_bom;
for (;;) {
int c = get_next_char();
@@ -424,7 +426,7 @@ static int git_parse_source(config_fn_t fn, void *data)
/* We are at the file beginning; skip UTF8-encoded BOM
* if present. Sane editors won't put this in on their
* own, but e.g. Windows Notepad will do it happily. */
- if ((unsigned char) c == *bomptr) {
+ if (c == (*bomptr & 0377)) {
bomptr++;
continue;
} else {
@@ -509,9 +511,9 @@ static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
errno = EINVAL;
return 0;
}
- uval = abs(val);
+ uval = labs(val);
uval *= factor;
- if (uval > max || abs(val) > uval) {
+ if (uval > max || labs(val) > uval) {
errno = ERANGE;
return 0;
}
@@ -616,7 +618,7 @@ unsigned long git_config_ulong(const char *name, const char *value)
return ret;
}
-static int git_config_maybe_bool_text(const char *name, const char *value)
+int git_parse_maybe_bool(const char *value)
{
if (!value)
return 1;
@@ -635,7 +637,7 @@ static int git_config_maybe_bool_text(const char *name, const char *value)
int git_config_maybe_bool(const char *name, const char *value)
{
- int v = git_config_maybe_bool_text(name, value);
+ int v = git_parse_maybe_bool(value);
if (0 <= v)
return v;
if (git_parse_int(value, &v))
@@ -645,7 +647,7 @@ int git_config_maybe_bool(const char *name, const char *value)
int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
{
- int v = git_config_maybe_bool_text(name, value);
+ int v = git_parse_maybe_bool(value);
if (0 <= v) {
*is_bool = 1;
return v;
@@ -899,6 +901,16 @@ static int git_default_core_config(const char *var, const char *value)
return 0;
}
+ if (!strcmp(var, "core.protecthfs")) {
+ protect_hfs = git_config_bool(var, value);
+ return 0;
+ }
+
+ if (!strcmp(var, "core.protectntfs")) {
+ protect_ntfs = git_config_bool(var, value);
+ return 0;
+ }
+
/* Add other config variables here and to Documentation/config.txt. */
return 0;
}
@@ -1076,7 +1088,9 @@ int git_config_from_file(config_fn_t fn, const char *filename, void *data)
f = fopen(filename, "r");
if (f) {
+ flockfile(f);
ret = do_config_from_file(fn, filename, filename, f, data);
+ funlockfile(f);
fclose(f);
}
return ret;
@@ -1143,12 +1157,28 @@ const char *git_etc_gitconfig(void)
return system_wide;
}
+/*
+ * Parse environment variable 'k' as a boolean (in various
+ * possible spellings); if missing, use the default value 'def'.
+ */
int git_env_bool(const char *k, int def)
{
const char *v = getenv(k);
return v ? git_config_bool(k, v) : def;
}
+/*
+ * Parse environment variable 'k' as ulong with possibly a unit
+ * suffix; if missing, use the default value 'val'.
+ */
+unsigned long git_env_ulong(const char *k, unsigned long val)
+{
+ const char *v = getenv(k);
+ if (v && !git_parse_ulong(v, &val))
+ die("failed to parse %s", k);
+ return val;
+}
+
int git_config_system(void)
{
return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
@@ -1157,10 +1187,8 @@ int git_config_system(void)
int git_config_early(config_fn_t fn, void *data, const char *repo_config)
{
int ret = 0, found = 0;
- char *xdg_config = NULL;
- char *user_config = NULL;
-
- home_config_paths(&user_config, &xdg_config, "config");
+ char *xdg_config = xdg_config_home("config");
+ char *user_config = expand_user_path("~/.gitconfig");
if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0)) {
ret += git_config_from_file(fn, git_etc_gitconfig(),
@@ -1317,7 +1345,7 @@ static int configset_add_value(struct config_set *cs, const char *key, const cha
string_list_init(&e->value_list, 1);
hashmap_add(&cs->config_hash, e);
}
- si = string_list_append_nodup(&e->value_list, value ? xstrdup(value) : NULL);
+ si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
l_item = &cs->list.items[cs->list.nr++];
@@ -1611,10 +1639,15 @@ static struct {
static int matches(const char *key, const char *value)
{
- return !strcmp(key, store.key) &&
- (store.value_regex == NULL ||
- (store.do_not_match ^
- !regexec(store.value_regex, value, 0, NULL, 0)));
+ if (strcmp(key, store.key))
+ return 0; /* not ours */
+ if (!store.value_regex)
+ return 1; /* always matches */
+ if (store.value_regex == CONFIG_REGEX_NONE)
+ return 0; /* never matches */
+
+ return store.do_not_match ^
+ (value && !regexec(store.value_regex, value, 0, NULL, 0));
}
static int store_aux(const char *key, const char *value, void *cb)
@@ -1815,7 +1848,7 @@ int git_config_set(const char *key, const char *value)
* baselen - pointer to int which will hold the length of the
* section + subsection part, can be NULL
*/
-int git_config_parse_key(const char *key, char **store_key, int *baselen_)
+static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
{
int i, dot, baselen;
const char *last_dot = strrchr(key, '.');
@@ -1826,12 +1859,14 @@ int git_config_parse_key(const char *key, char **store_key, int *baselen_)
*/
if (last_dot == NULL || last_dot == key) {
- error("key does not contain a section: %s", key);
+ if (!quiet)
+ error("key does not contain a section: %s", key);
return -CONFIG_NO_SECTION_OR_NAME;
}
if (!last_dot[1]) {
- error("key does not contain variable name: %s", key);
+ if (!quiet)
+ error("key does not contain variable name: %s", key);
return -CONFIG_NO_SECTION_OR_NAME;
}
@@ -1842,7 +1877,8 @@ int git_config_parse_key(const char *key, char **store_key, int *baselen_)
/*
* Validate the key and while at it, lower case it for matching.
*/
- *store_key = xmalloc(strlen(key) + 1);
+ if (store_key)
+ *store_key = xmalloc(strlen(key) + 1);
dot = 0;
for (i = 0; key[i]; i++) {
@@ -1853,29 +1889,47 @@ int git_config_parse_key(const char *key, char **store_key, int *baselen_)
if (!dot || i > baselen) {
if (!iskeychar(c) ||
(i == baselen + 1 && !isalpha(c))) {
- error("invalid key: %s", key);
+ if (!quiet)
+ error("invalid key: %s", key);
goto out_free_ret_1;
}
c = tolower(c);
} else if (c == '\n') {
- error("invalid key (newline): %s", key);
+ if (!quiet)
+ error("invalid key (newline): %s", key);
goto out_free_ret_1;
}
- (*store_key)[i] = c;
+ if (store_key)
+ (*store_key)[i] = c;
}
- (*store_key)[i] = 0;
+ if (store_key)
+ (*store_key)[i] = 0;
return 0;
out_free_ret_1:
- free(*store_key);
- *store_key = NULL;
+ if (store_key) {
+ free(*store_key);
+ *store_key = NULL;
+ }
return -CONFIG_INVALID_KEY;
}
+int git_config_parse_key(const char *key, char **store_key, int *baselen)
+{
+ return git_config_parse_key_1(key, store_key, baselen, 0);
+}
+
+int git_config_key_is_valid(const char *key)
+{
+ return !git_config_parse_key_1(key, NULL, NULL, 1);
+}
+
/*
* If value==NULL, unset in (remove from) config,
* if value_regex!=NULL, disregard key/value pairs where value does not match.
+ * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
+ * (only add a new one)
* if multi_replace==0, nothing, or only one matching key/value is replaced,
* else all matching key/values (regardless how many) are removed,
* before the new pair is written.
@@ -1900,10 +1954,12 @@ int git_config_set_multivar_in_file(const char *config_filename,
const char *key, const char *value,
const char *value_regex, int multi_replace)
{
- int fd = -1, in_fd;
+ int fd = -1, in_fd = -1;
int ret;
struct lock_file *lock = NULL;
char *filename_buf = NULL;
+ char *contents = NULL;
+ size_t contents_sz;
/* parse-key returns negative; flip the sign to feed exit(3) */
ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
@@ -1953,12 +2009,13 @@ int git_config_set_multivar_in_file(const char *config_filename,
goto write_err_out;
} else {
struct stat st;
- char *contents;
- size_t contents_sz, copy_begin, copy_end;
+ size_t copy_begin, copy_end;
int i, new_line = 0;
if (value_regex == NULL)
store.value_regex = NULL;
+ else if (value_regex == CONFIG_REGEX_NONE)
+ store.value_regex = CONFIG_REGEX_NONE;
else {
if (value_regex[0] == '!') {
store.do_not_match = 1;
@@ -1990,7 +2047,8 @@ int git_config_set_multivar_in_file(const char *config_filename,
if (git_config_from_file(store_aux, config_filename, NULL)) {
error("invalid config file %s", config_filename);
free(store.key);
- if (store.value_regex != NULL) {
+ if (store.value_regex != NULL &&
+ store.value_regex != CONFIG_REGEX_NONE) {
regfree(store.value_regex);
free(store.value_regex);
}
@@ -1999,7 +2057,8 @@ int git_config_set_multivar_in_file(const char *config_filename,
}
free(store.key);
- if (store.value_regex != NULL) {
+ if (store.value_regex != NULL &&
+ store.value_regex != CONFIG_REGEX_NONE) {
regfree(store.value_regex);
free(store.value_regex);
}
@@ -2013,13 +2072,23 @@ int git_config_set_multivar_in_file(const char *config_filename,
fstat(in_fd, &st);
contents_sz = xsize_t(st.st_size);
- contents = xmmap(NULL, contents_sz, PROT_READ,
- MAP_PRIVATE, in_fd, 0);
+ contents = xmmap_gently(NULL, contents_sz, PROT_READ,
+ MAP_PRIVATE, in_fd, 0);
+ if (contents == MAP_FAILED) {
+ if (errno == ENODEV && S_ISDIR(st.st_mode))
+ errno = EISDIR;
+ error("unable to mmap '%s': %s",
+ config_filename, strerror(errno));
+ ret = CONFIG_INVALID_FILE;
+ contents = NULL;
+ goto out_free;
+ }
close(in_fd);
+ in_fd = -1;
- if (chmod(lock->filename, st.st_mode & 07777) < 0) {
+ if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
error("chmod on %s failed: %s",
- lock->filename, strerror(errno));
+ get_lock_file_path(lock), strerror(errno));
ret = CONFIG_NO_WRITE;
goto out_free;
}
@@ -2071,11 +2140,13 @@ int git_config_set_multivar_in_file(const char *config_filename,
goto write_err_out;
munmap(contents, contents_sz);
+ contents = NULL;
}
if (commit_lock_file(lock) < 0) {
error("could not commit config file %s", config_filename);
ret = CONFIG_NO_WRITE;
+ lock = NULL;
goto out_free;
}
@@ -2095,10 +2166,14 @@ out_free:
if (lock)
rollback_lock_file(lock);
free(filename_buf);
+ if (contents)
+ munmap(contents, contents_sz);
+ if (in_fd >= 0)
+ close(in_fd);
return ret;
write_err_out:
- ret = write_error(lock->filename);
+ ret = write_error(get_lock_file_path(lock));
goto out_free;
}
@@ -2199,9 +2274,9 @@ int git_config_rename_section_in_file(const char *config_filename,
fstat(fileno(config_file), &st);
- if (chmod(lock->filename, st.st_mode & 07777) < 0) {
+ if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
ret = error("chmod on %s failed: %s",
- lock->filename, strerror(errno));
+ get_lock_file_path(lock), strerror(errno));
goto out;
}
@@ -2222,7 +2297,7 @@ int git_config_rename_section_in_file(const char *config_filename,
}
store.baselen = strlen(new_name);
if (!store_write_section(out_fd, new_name)) {
- ret = write_error(lock->filename);
+ ret = write_error(get_lock_file_path(lock));
goto out;
}
/*
@@ -2248,7 +2323,7 @@ int git_config_rename_section_in_file(const char *config_filename,
continue;
length = strlen(output);
if (write_in_full(out_fd, output, length) != length) {
- ret = write_error(lock->filename);
+ ret = write_error(get_lock_file_path(lock));
goto out;
}
}
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-25 11:52:01 +0000