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googlers / jrn / git / df98236ca49648a7ef54b83776cc681f22739018 / . / config.c
blob: 2766b149a0537ee2cbcdfc0632704d2158c370fd [file] [log] [blame]
/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
* Copyright (C) Johannes Schindelin, 2005
*
*/
#include "git-compat-util.h"
#include "abspath.h"
#include "advice.h"
#include "date.h"
#include "branch.h"
#include "config.h"
#include "parse.h"
#include "convert.h"
#include "environment.h"
#include "gettext.h"
#include "ident.h"
#include "repository.h"
#include "lockfile.h"
#include "mailmap.h"
#include "attr.h"
#include "exec-cmd.h"
#include "strbuf.h"
#include "quote.h"
#include "hashmap.h"
#include "string-list.h"
#include "object-name.h"
#include "object-store-ll.h"
#include "pager.h"
#include "path.h"
#include "utf8.h"
#include "color.h"
#include "refs.h"
#include "setup.h"
#include "strvec.h"
#include "trace2.h"
#include "wildmatch.h"
#include "ws.h"
#include "write-or-die.h"
struct config_source {
struct config_source *prev;
union {
FILE *file;
struct config_buf {
const char *buf;
size_t len;
size_t pos;
} buf;
} u;
enum config_origin_type origin_type;
const char *name;
const char *path;
enum config_error_action default_error_action;
int linenr;
int eof;
size_t total_len;
struct strbuf value;
struct strbuf var;
unsigned subsection_case_sensitive : 1;
int (*do_fgetc)(struct config_source *c);
int (*do_ungetc)(int c, struct config_source *conf);
long (*do_ftell)(struct config_source *c);
};
#define CONFIG_SOURCE_INIT { 0 }
static int pack_compression_seen;
static int zlib_compression_seen;
/*
* Config that comes from trusted scopes, namely:
* - CONFIG_SCOPE_SYSTEM (e.g. /etc/gitconfig)
* - CONFIG_SCOPE_GLOBAL (e.g. $HOME/.gitconfig, $XDG_CONFIG_HOME/git)
* - CONFIG_SCOPE_COMMAND (e.g. "-c" option, environment variables)
*
* This is declared here for code cleanliness, but unlike the other
* static variables, this does not hold config parser state.
*/
static struct config_set protected_config;
static int config_file_fgetc(struct config_source *conf)
{
return getc_unlocked(conf->u.file);
}
static int config_file_ungetc(int c, struct config_source *conf)
{
return ungetc(c, conf->u.file);
}
static long config_file_ftell(struct config_source *conf)
{
return ftell(conf->u.file);
}
static int config_buf_fgetc(struct config_source *conf)
{
if (conf->u.buf.pos < conf->u.buf.len)
return conf->u.buf.buf[conf->u.buf.pos++];
return EOF;
}
static int config_buf_ungetc(int c, struct config_source *conf)
{
if (conf->u.buf.pos > 0) {
conf->u.buf.pos--;
if (conf->u.buf.buf[conf->u.buf.pos] != c)
BUG("config_buf can only ungetc the same character");
return c;
}
return EOF;
}
static long config_buf_ftell(struct config_source *conf)
{
return conf->u.buf.pos;
}
struct config_include_data {
int depth;
config_fn_t fn;
void *data;
const struct config_options *opts;
struct git_config_source *config_source;
struct repository *repo;
/*
* All remote URLs discovered when reading all config files.
*/
struct string_list *remote_urls;
};
#define CONFIG_INCLUDE_INIT { 0 }
static int git_config_include(const char *var, const char *value,
const struct config_context *ctx, void *data);
#define MAX_INCLUDE_DEPTH 10
static const char include_depth_advice[] = N_(
"exceeded maximum include depth (%d) while including\n"
" %s\n"
"from\n"
" %s\n"
"This might be due to circular includes.");
static int handle_path_include(const struct key_value_info *kvi,
const char *path,
struct config_include_data *inc)
{
int ret = 0;
struct strbuf buf = STRBUF_INIT;
char *expanded;
if (!path)
return config_error_nonbool("include.path");
expanded = interpolate_path(path, 0);
if (!expanded)
return error(_("could not expand include path '%s'"), path);
path = expanded;
/*
* Use an absolute path as-is, but interpret relative paths
* based on the including config file.
*/
if (!is_absolute_path(path)) {
char *slash;
if (!kvi || !kvi->path) {
ret = error(_("relative config includes must come from files"));
goto cleanup;
}
slash = find_last_dir_sep(kvi->path);
if (slash)
strbuf_add(&buf, kvi->path, slash - kvi->path + 1);
strbuf_addstr(&buf, path);
path = buf.buf;
}
if (!access_or_die(path, R_OK, 0)) {
if (++inc->depth > MAX_INCLUDE_DEPTH)
die(_(include_depth_advice), MAX_INCLUDE_DEPTH, path,
!kvi ? "<unknown>" :
kvi->filename ? kvi->filename :
"the command line");
ret = git_config_from_file_with_options(git_config_include, path, inc,
kvi->scope, NULL);
inc->depth--;
}
cleanup:
strbuf_release(&buf);
free(expanded);
return ret;
}
static void add_trailing_starstar_for_dir(struct strbuf *pat)
{
if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
strbuf_addstr(pat, "**");
}
static int prepare_include_condition_pattern(const struct key_value_info *kvi,
struct strbuf *pat)
{
struct strbuf path = STRBUF_INIT;
char *expanded;
int prefix = 0;
expanded = interpolate_path(pat->buf, 1);
if (expanded) {
strbuf_reset(pat);
strbuf_addstr(pat, expanded);
free(expanded);
}
if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
const char *slash;
if (!kvi || !kvi->path)
return error(_("relative config include "
"conditionals must come from files"));
strbuf_realpath(&path, kvi->path, 1);
slash = find_last_dir_sep(path.buf);
if (!slash)
BUG("how is this possible?");
strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
prefix = slash - path.buf + 1 /* slash */;
} else if (!is_absolute_path(pat->buf))
strbuf_insertstr(pat, 0, "**/");
add_trailing_starstar_for_dir(pat);
strbuf_release(&path);
return prefix;
}
static int include_by_gitdir(const struct key_value_info *kvi,
const struct config_options *opts,
const char *cond, size_t cond_len, int icase)
{
struct strbuf text = STRBUF_INIT;
struct strbuf pattern = STRBUF_INIT;
int ret = 0, prefix;
const char *git_dir;
int already_tried_absolute = 0;
if (opts->git_dir)
git_dir = opts->git_dir;
else
goto done;
strbuf_realpath(&text, git_dir, 1);
strbuf_add(&pattern, cond, cond_len);
prefix = prepare_include_condition_pattern(kvi, &pattern);
again:
if (prefix < 0)
goto done;
if (prefix > 0) {
/*
* perform literal matching on the prefix part so that
* any wildcard character in it can't create side effects.
*/
if (text.len < prefix)
goto done;
if (!icase && strncmp(pattern.buf, text.buf, prefix))
goto done;
if (icase && strncasecmp(pattern.buf, text.buf, prefix))
goto done;
}
ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
WM_PATHNAME | (icase ? WM_CASEFOLD : 0));
if (!ret && !already_tried_absolute) {
/*
* We've tried e.g. matching gitdir:~/work, but if
* ~/work is a symlink to /mnt/storage/work
* strbuf_realpath() will expand it, so the rule won't
* match. Let's match against a
* strbuf_add_absolute_path() version of the path,
* which'll do the right thing
*/
strbuf_reset(&text);
strbuf_add_absolute_path(&text, git_dir);
already_tried_absolute = 1;
goto again;
}
done:
strbuf_release(&pattern);
strbuf_release(&text);
return ret;
}
static int include_by_branch(const char *cond, size_t cond_len)
{
int flags;
int ret;
struct strbuf pattern = STRBUF_INIT;
const char *refname = !the_repository->gitdir ?
NULL : resolve_ref_unsafe("HEAD", 0, NULL, &flags);
const char *shortname;
if (!refname || !(flags & REF_ISSYMREF) ||
!skip_prefix(refname, "refs/heads/", &shortname))
return 0;
strbuf_add(&pattern, cond, cond_len);
add_trailing_starstar_for_dir(&pattern);
ret = !wildmatch(pattern.buf, shortname, WM_PATHNAME);
strbuf_release(&pattern);
return ret;
}
static int add_remote_url(const char *var, const char *value,
const struct config_context *ctx UNUSED, void *data)
{
struct string_list *remote_urls = data;
const char *remote_name;
size_t remote_name_len;
const char *key;
if (!parse_config_key(var, "remote", &remote_name, &remote_name_len,
&key) &&
remote_name &&
!strcmp(key, "url"))
string_list_append(remote_urls, value);
return 0;
}
static void populate_remote_urls(struct config_include_data *inc)
{
struct config_options opts;
opts = *inc->opts;
opts.unconditional_remote_url = 1;
inc->remote_urls = xmalloc(sizeof(*inc->remote_urls));
string_list_init_dup(inc->remote_urls);
config_with_options(add_remote_url, inc->remote_urls,
inc->config_source, inc->repo, &opts);
}
static int forbid_remote_url(const char *var, const char *value UNUSED,
const struct config_context *ctx UNUSED,
void *data UNUSED)
{
const char *remote_name;
size_t remote_name_len;
const char *key;
if (!parse_config_key(var, "remote", &remote_name, &remote_name_len,
&key) &&
remote_name &&
!strcmp(key, "url"))
die(_("remote URLs cannot be configured in file directly or indirectly included by includeIf.hasconfig:remote.*.url"));
return 0;
}
static int at_least_one_url_matches_glob(const char *glob, int glob_len,
struct string_list *remote_urls)
{
struct strbuf pattern = STRBUF_INIT;
struct string_list_item *url_item;
int found = 0;
strbuf_add(&pattern, glob, glob_len);
for_each_string_list_item(url_item, remote_urls) {
if (!wildmatch(pattern.buf, url_item->string, WM_PATHNAME)) {
found = 1;
break;
}
}
strbuf_release(&pattern);
return found;
}
static int include_by_remote_url(struct config_include_data *inc,
const char *cond, size_t cond_len)
{
if (inc->opts->unconditional_remote_url)
return 1;
if (!inc->remote_urls)
populate_remote_urls(inc);
return at_least_one_url_matches_glob(cond, cond_len,
inc->remote_urls);
}
static int include_condition_is_true(const struct key_value_info *kvi,
struct config_include_data *inc,
const char *cond, size_t cond_len)
{
const struct config_options *opts = inc->opts;
if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
return include_by_gitdir(kvi, opts, cond, cond_len, 0);
else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
return include_by_gitdir(kvi, opts, cond, cond_len, 1);
else if (skip_prefix_mem(cond, cond_len, "onbranch:", &cond, &cond_len))
return include_by_branch(cond, cond_len);
else if (skip_prefix_mem(cond, cond_len, "hasconfig:remote.*.url:", &cond,
&cond_len))
return include_by_remote_url(inc, cond, cond_len);
/* unknown conditionals are always false */
return 0;
}
static int git_config_include(const char *var, const char *value,
const struct config_context *ctx,
void *data)
{
struct config_include_data *inc = data;
const char *cond, *key;
size_t cond_len;
int ret;
/*
* Pass along all values, including "include" directives; this makes it
* possible to query information on the includes themselves.
*/
ret = inc->fn(var, value, ctx, inc->data);
if (ret < 0)
return ret;
if (!strcmp(var, "include.path"))
ret = handle_path_include(ctx->kvi, value, inc);
if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
cond && include_condition_is_true(ctx->kvi, inc, cond, cond_len) &&
!strcmp(key, "path")) {
config_fn_t old_fn = inc->fn;
if (inc->opts->unconditional_remote_url)
inc->fn = forbid_remote_url;
ret = handle_path_include(ctx->kvi, value, inc);
inc->fn = old_fn;
}
return ret;
}
static void git_config_push_split_parameter(const char *key, const char *value)
{
struct strbuf env = STRBUF_INIT;
const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
if (old && *old) {
strbuf_addstr(&env, old);
strbuf_addch(&env, ' ');
}
sq_quote_buf(&env, key);
strbuf_addch(&env, '=');
if (value)
sq_quote_buf(&env, value);
setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
strbuf_release(&env);
}
void git_config_push_parameter(const char *text)
{
const char *value;
/*
* When we see:
*
* section.subsection=with=equals.key=value
*
* we cannot tell if it means:
*
* [section "subsection=with=equals"]
* key = value
*
* or:
*
* [section]
* subsection = with=equals.key=value
*
* We parse left-to-right for the first "=", meaning we'll prefer to
* keep the value intact over the subsection. This is historical, but
* also sensible since values are more likely to contain odd or
* untrusted input than a section name.
*
* A missing equals is explicitly allowed (as a bool-only entry).
*/
value = strchr(text, '=');
if (value) {
char *key = xmemdupz(text, value - text);
git_config_push_split_parameter(key, value + 1);
free(key);
} else {
git_config_push_split_parameter(text, NULL);
}
}
void git_config_push_env(const char *spec)
{
char *key;
const char *env_name;
const char *env_value;
env_name = strrchr(spec, '=');
if (!env_name)
die(_("invalid config format: %s"), spec);
key = xmemdupz(spec, env_name - spec);
env_name++;
if (!*env_name)
die(_("missing environment variable name for configuration '%.*s'"),
(int)(env_name - spec - 1), spec);
env_value = getenv(env_name);
if (!env_value)
die(_("missing environment variable '%s' for configuration '%.*s'"),
env_name, (int)(env_name - spec - 1), spec);
git_config_push_split_parameter(key, env_value);
free(key);
}
static inline int iskeychar(int c)
{
return isalnum(c) || c == '-';
}
/*
* Auxiliary function to sanity-check and split the key into the section
* identifier and variable name.
*
* Returns 0 on success, -1 when there is an invalid character in the key and
* -2 if there is no section name in the key.
*
* store_key - pointer to char* which will hold a copy of the key with
* lowercase section and variable name
* baselen - pointer to size_t which will hold the length of the
* section + subsection part, can be NULL
*/
int git_config_parse_key(const char *key, char **store_key, size_t *baselen_)
{
size_t i, baselen;
int dot;
const char *last_dot = strrchr(key, '.');
/*
* Since "key" actually contains the section name and the real
* key name separated by a dot, we have to know where the dot is.
*/
if (last_dot == NULL || last_dot == key) {
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);
return -CONFIG_NO_SECTION_OR_NAME;
}
baselen = last_dot - key;
if (baselen_)
*baselen_ = baselen;
/*
* Validate the key and while at it, lower case it for matching.
*/
*store_key = xmallocz(strlen(key));
dot = 0;
for (i = 0; key[i]; i++) {
unsigned char c = key[i];
if (c == '.')
dot = 1;
/* Leave the extended basename untouched.. */
if (!dot || i > baselen) {
if (!iskeychar(c) ||
(i == baselen + 1 && !isalpha(c))) {
error(_("invalid key: %s"), key);
goto out_free_ret_1;
}
c = tolower(c);
} else if (c == '\n') {
error(_("invalid key (newline): %s"), key);
goto out_free_ret_1;
}
(*store_key)[i] = c;
}
return 0;
out_free_ret_1:
FREE_AND_NULL(*store_key);
return -CONFIG_INVALID_KEY;
}
static int config_parse_pair(const char *key, const char *value,
struct key_value_info *kvi,
config_fn_t fn, void *data)
{
char *canonical_name;
int ret;
struct config_context ctx = {
.kvi = kvi,
};
if (!strlen(key))
return error(_("empty config key"));
if (git_config_parse_key(key, &canonical_name, NULL))
return -1;
ret = (fn(canonical_name, value, &ctx, data) < 0) ? -1 : 0;
free(canonical_name);
return ret;
}
/* for values read from `git_config_from_parameters()` */
void kvi_from_param(struct key_value_info *out)
{
out->filename = NULL;
out->linenr = -1;
out->origin_type = CONFIG_ORIGIN_CMDLINE;
out->scope = CONFIG_SCOPE_COMMAND;
out->path = NULL;
}
int git_config_parse_parameter(const char *text,
config_fn_t fn, void *data)
{
const char *value;
struct strbuf **pair;
int ret;
struct key_value_info kvi = KVI_INIT;
kvi_from_param(&kvi);
pair = strbuf_split_str(text, '=', 2);
if (!pair[0])
return error(_("bogus config parameter: %s"), text);
if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
strbuf_setlen(pair[0], pair[0]->len - 1);
value = pair[1] ? pair[1]->buf : "";
} else {
value = NULL;
}
strbuf_trim(pair[0]);
if (!pair[0]->len) {
strbuf_list_free(pair);
return error(_("bogus config parameter: %s"), text);
}
ret = config_parse_pair(pair[0]->buf, value, &kvi, fn, data);
strbuf_list_free(pair);
return ret;
}
static int parse_config_env_list(char *env, struct key_value_info *kvi,
config_fn_t fn, void *data)
{
char *cur = env;
while (cur && *cur) {
const char *key = sq_dequote_step(cur, &cur);
if (!key)
return error(_("bogus format in %s"),
CONFIG_DATA_ENVIRONMENT);
if (!cur || isspace(*cur)) {
/* old-style 'key=value' */
if (git_config_parse_parameter(key, fn, data) < 0)
return -1;
}
else if (*cur == '=') {
/* new-style 'key'='value' */
const char *value;
cur++;
if (*cur == '\'') {
/* quoted value */
value = sq_dequote_step(cur, &cur);
if (!value || (cur && !isspace(*cur))) {
return error(_("bogus format in %s"),
CONFIG_DATA_ENVIRONMENT);
}
} else if (!*cur || isspace(*cur)) {
/* implicit bool: 'key'= */
value = NULL;
} else {
return error(_("bogus format in %s"),
CONFIG_DATA_ENVIRONMENT);
}
if (config_parse_pair(key, value, kvi, fn, data) < 0)
return -1;
}
else {
/* unknown format */
return error(_("bogus format in %s"),
CONFIG_DATA_ENVIRONMENT);
}
if (cur) {
while (isspace(*cur))
cur++;
}
}
return 0;
}
int git_config_from_parameters(config_fn_t fn, void *data)
{
const char *env;
struct strbuf envvar = STRBUF_INIT;
struct strvec to_free = STRVEC_INIT;
int ret = 0;
char *envw = NULL;
struct key_value_info kvi = KVI_INIT;
kvi_from_param(&kvi);
env = getenv(CONFIG_COUNT_ENVIRONMENT);
if (env) {
unsigned long count;
char *endp;
int i;
count = strtoul(env, &endp, 10);
if (*endp) {
ret = error(_("bogus count in %s"), CONFIG_COUNT_ENVIRONMENT);
goto out;
}
if (count > INT_MAX) {
ret = error(_("too many entries in %s"), CONFIG_COUNT_ENVIRONMENT);
goto out;
}
for (i = 0; i < count; i++) {
const char *key, *value;
strbuf_addf(&envvar, "GIT_CONFIG_KEY_%d", i);
key = getenv_safe(&to_free, envvar.buf);
if (!key) {
ret = error(_("missing config key %s"), envvar.buf);
goto out;
}
strbuf_reset(&envvar);
strbuf_addf(&envvar, "GIT_CONFIG_VALUE_%d", i);
value = getenv_safe(&to_free, envvar.buf);
if (!value) {
ret = error(_("missing config value %s"), envvar.buf);
goto out;
}
strbuf_reset(&envvar);
if (config_parse_pair(key, value, &kvi, fn, data) < 0) {
ret = -1;
goto out;
}
}
}
env = getenv(CONFIG_DATA_ENVIRONMENT);
if (env) {
/* sq_dequote will write over it */
envw = xstrdup(env);
if (parse_config_env_list(envw, &kvi, fn, data) < 0) {
ret = -1;
goto out;
}
}
out:
strbuf_release(&envvar);
strvec_clear(&to_free);
free(envw);
return ret;
}
static int get_next_char(struct config_source *cs)
{
int c = cs->do_fgetc(cs);
if (c == '\r') {
/* DOS like systems */
c = cs->do_fgetc(cs);
if (c != '\n') {
if (c != EOF)
cs->do_ungetc(c, cs);
c = '\r';
}
}
if (c != EOF && ++cs->total_len > INT_MAX) {
/*
* This is an absurdly long config file; refuse to parse
* further in order to protect downstream code from integer
* overflows. Note that we can't return an error specifically,
* but we can mark EOF and put trash in the return value,
* which will trigger a parse error.
*/
cs->eof = 1;
return 0;
}
if (c == '\n')
cs->linenr++;
if (c == EOF) {
cs->eof = 1;
cs->linenr++;
c = '\n';
}
return c;
}
static char *parse_value(struct config_source *cs)
{
int quote = 0, comment = 0;
size_t trim_len = 0;
strbuf_reset(&cs->value);
for (;;) {
int c = get_next_char(cs);
if (c == '\n') {
if (quote) {
cs->linenr--;
return NULL;
}
if (trim_len)
strbuf_setlen(&cs->value, trim_len);
return cs->value.buf;
}
if (comment)
continue;
if (isspace(c) && !quote) {
if (!trim_len)
trim_len = cs->value.len;
if (cs->value.len)
strbuf_addch(&cs->value, c);
continue;
}
if (!quote) {
if (c == ';' || c == '#') {
comment = 1;
continue;
}
}
if (trim_len)
trim_len = 0;
if (c == '\\') {
c = get_next_char(cs);
switch (c) {
case '\n':
continue;
case 't':
c = '\t';
break;
case 'b':
c = '\b';
break;
case 'n':
c = '\n';
break;
/* Some characters escape as themselves */
case '\\': case '"':
break;
/* Reject unknown escape sequences */
default:
return NULL;
}
strbuf_addch(&cs->value, c);
continue;
}
if (c == '"') {
quote = 1 - quote;
continue;
}
strbuf_addch(&cs->value, c);
}
}
static int get_value(struct config_source *cs, struct key_value_info *kvi,
config_fn_t fn, void *data, struct strbuf *name)
{
int c;
char *value;
int ret;
struct config_context ctx = {
.kvi = kvi,
};
/* Get the full name */
for (;;) {
c = get_next_char(cs);
if (cs->eof)
break;
if (!iskeychar(c))
break;
strbuf_addch(name, tolower(c));
}
while (c == ' ' || c == '\t')
c = get_next_char(cs);
value = NULL;
if (c != '\n') {
if (c != '=')
return -1;
value = parse_value(cs);
if (!value)
return -1;
}
/*
* We already consumed the \n, but we need linenr to point to
* the line we just parsed during the call to fn to get
* accurate line number in error messages.
*/
cs->linenr--;
kvi->linenr = cs->linenr;
ret = fn(name->buf, value, &ctx, data);
if (ret >= 0)
cs->linenr++;
return ret;
}
static int get_extended_base_var(struct config_source *cs, struct strbuf *name,
int c)
{
cs->subsection_case_sensitive = 0;
do {
if (c == '\n')
goto error_incomplete_line;
c = get_next_char(cs);
} while (isspace(c));
/* We require the format to be '[base "extension"]' */
if (c != '"')
return -1;
strbuf_addch(name, '.');
for (;;) {
int c = get_next_char(cs);
if (c == '\n')
goto error_incomplete_line;
if (c == '"')
break;
if (c == '\\') {
c = get_next_char(cs);
if (c == '\n')
goto error_incomplete_line;
}
strbuf_addch(name, c);
}
/* Final ']' */
if (get_next_char(cs) != ']')
return -1;
return 0;
error_incomplete_line:
cs->linenr--;
return -1;
}
static int get_base_var(struct config_source *cs, struct strbuf *name)
{
cs->subsection_case_sensitive = 1;
for (;;) {
int c = get_next_char(cs);
if (cs->eof)
return -1;
if (c == ']')
return 0;
if (isspace(c))
return get_extended_base_var(cs, name, c);
if (!iskeychar(c) && c != '.')
return -1;
strbuf_addch(name, tolower(c));
}
}
struct parse_event_data {
enum config_event_t previous_type;
size_t previous_offset;
const struct config_options *opts;
};
static int do_event(struct config_source *cs, enum config_event_t type,
struct parse_event_data *data)
{
size_t offset;
if (!data->opts || !data->opts->event_fn)
return 0;
if (type == CONFIG_EVENT_WHITESPACE &&
data->previous_type == type)
return 0;
offset = cs->do_ftell(cs);
/*
* At EOF, the parser always "inserts" an extra '\n', therefore
* the end offset of the event is the current file position, otherwise
* we will already have advanced to the next event.
*/
if (type != CONFIG_EVENT_EOF)
offset--;
if (data->previous_type != CONFIG_EVENT_EOF &&
data->opts->event_fn(data->previous_type, data->previous_offset,
offset, cs, data->opts->event_fn_data) < 0)
return -1;
data->previous_type = type;
data->previous_offset = offset;
return 0;
}
static void kvi_from_source(struct config_source *cs,
enum config_scope scope,
struct key_value_info *out)
{
out->filename = strintern(cs->name);
out->origin_type = cs->origin_type;
out->linenr = cs->linenr;
out->scope = scope;
out->path = cs->path;
}
static int git_parse_source(struct config_source *cs, config_fn_t fn,
struct key_value_info *kvi, void *data,
const struct config_options *opts)
{
int comment = 0;
size_t baselen = 0;
struct strbuf *var = &cs->var;
int error_return = 0;
char *error_msg = NULL;
/* U+FEFF Byte Order Mark in UTF8 */
const char *bomptr = utf8_bom;
/* For the parser event callback */
struct parse_event_data event_data = {
CONFIG_EVENT_EOF, 0, opts
};
for (;;) {
int c;
c = get_next_char(cs);
if (bomptr && *bomptr) {
/* 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 (c == (*bomptr & 0377)) {
bomptr++;
continue;
} else {
/* Do not tolerate partial BOM. */
if (bomptr != utf8_bom)
break;
/* No BOM at file beginning. Cool. */
bomptr = NULL;
}
}
if (c == '\n') {
if (cs->eof) {
if (do_event(cs, CONFIG_EVENT_EOF, &event_data) < 0)
return -1;
return 0;
}
if (do_event(cs, CONFIG_EVENT_WHITESPACE, &event_data) < 0)
return -1;
comment = 0;
continue;
}
if (comment)
continue;
if (isspace(c)) {
if (do_event(cs, CONFIG_EVENT_WHITESPACE, &event_data) < 0)
return -1;
continue;
}
if (c == '#' || c == ';') {
if (do_event(cs, CONFIG_EVENT_COMMENT, &event_data) < 0)
return -1;
comment = 1;
continue;
}
if (c == '[') {
if (do_event(cs, CONFIG_EVENT_SECTION, &event_data) < 0)
return -1;
/* Reset prior to determining a new stem */
strbuf_reset(var);
if (get_base_var(cs, var) < 0 || var->len < 1)
break;
strbuf_addch(var, '.');
baselen = var->len;
continue;
}
if (!isalpha(c))
break;
if (do_event(cs, CONFIG_EVENT_ENTRY, &event_data) < 0)
return -1;
/*
* Truncate the var name back to the section header
* stem prior to grabbing the suffix part of the name
* and the value.
*/
strbuf_setlen(var, baselen);
strbuf_addch(var, tolower(c));
if (get_value(cs, kvi, fn, data, var) < 0)
break;
}
if (do_event(cs, CONFIG_EVENT_ERROR, &event_data) < 0)
return -1;
switch (cs->origin_type) {
case CONFIG_ORIGIN_BLOB:
error_msg = xstrfmt(_("bad config line %d in blob %s"),
cs->linenr, cs->name);
break;
case CONFIG_ORIGIN_FILE:
error_msg = xstrfmt(_("bad config line %d in file %s"),
cs->linenr, cs->name);
break;
case CONFIG_ORIGIN_STDIN:
error_msg = xstrfmt(_("bad config line %d in standard input"),
cs->linenr);
break;
case CONFIG_ORIGIN_SUBMODULE_BLOB:
error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
cs->linenr, cs->name);
break;
case CONFIG_ORIGIN_CMDLINE:
error_msg = xstrfmt(_("bad config line %d in command line %s"),
cs->linenr, cs->name);
break;
default:
error_msg = xstrfmt(_("bad config line %d in %s"),
cs->linenr, cs->name);
}
switch (opts && opts->error_action ?
opts->error_action :
cs->default_error_action) {
case CONFIG_ERROR_DIE:
die("%s", error_msg);
break;
case CONFIG_ERROR_ERROR:
error_return = error("%s", error_msg);
break;
case CONFIG_ERROR_SILENT:
error_return = -1;
break;
case CONFIG_ERROR_UNSET:
BUG("config error action unset");
}
free(error_msg);
return error_return;
}
NORETURN
static void die_bad_number(const char *name, const char *value,
const struct key_value_info *kvi)
{
const char *error_type = (errno == ERANGE) ?
N_("out of range") : N_("invalid unit");
const char *bad_numeric = N_("bad numeric config value '%s' for '%s': %s");
if (!kvi)
BUG("kvi should not be NULL");
if (!value)
value = "";
if (!kvi->filename)
die(_(bad_numeric), value, name, _(error_type));
switch (kvi->origin_type) {
case CONFIG_ORIGIN_BLOB:
die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
value, name, kvi->filename, _(error_type));
case CONFIG_ORIGIN_FILE:
die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
value, name, kvi->filename, _(error_type));
case CONFIG_ORIGIN_STDIN:
die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
value, name, _(error_type));
case CONFIG_ORIGIN_SUBMODULE_BLOB:
die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
value, name, kvi->filename, _(error_type));
case CONFIG_ORIGIN_CMDLINE:
die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
value, name, kvi->filename, _(error_type));
default:
die(_("bad numeric config value '%s' for '%s' in %s: %s"),
value, name, kvi->filename, _(error_type));
}
}
int git_config_int(const char *name, const char *value,
const struct key_value_info *kvi)
{
int ret;
if (!git_parse_int(value, &ret))
die_bad_number(name, value, kvi);
return ret;
}
int64_t git_config_int64(const char *name, const char *value,
const struct key_value_info *kvi)
{
int64_t ret;
if (!git_parse_int64(value, &ret))
die_bad_number(name, value, kvi);
return ret;
}
unsigned long git_config_ulong(const char *name, const char *value,
const struct key_value_info *kvi)
{
unsigned long ret;
if (!git_parse_ulong(value, &ret))
die_bad_number(name, value, kvi);
return ret;
}
ssize_t git_config_ssize_t(const char *name, const char *value,
const struct key_value_info *kvi)
{
ssize_t ret;
if (!git_parse_ssize_t(value, &ret))
die_bad_number(name, value, kvi);
return ret;
}
static const struct fsync_component_name {
const char *name;
enum fsync_component component_bits;
} fsync_component_names[] = {
{ "loose-object", FSYNC_COMPONENT_LOOSE_OBJECT },
{ "pack", FSYNC_COMPONENT_PACK },
{ "pack-metadata", FSYNC_COMPONENT_PACK_METADATA },
{ "commit-graph", FSYNC_COMPONENT_COMMIT_GRAPH },
{ "index", FSYNC_COMPONENT_INDEX },
{ "objects", FSYNC_COMPONENTS_OBJECTS },
{ "reference", FSYNC_COMPONENT_REFERENCE },
{ "derived-metadata", FSYNC_COMPONENTS_DERIVED_METADATA },
{ "committed", FSYNC_COMPONENTS_COMMITTED },
{ "added", FSYNC_COMPONENTS_ADDED },
{ "all", FSYNC_COMPONENTS_ALL },
};
static enum fsync_component parse_fsync_components(const char *var, const char *string)
{
enum fsync_component current = FSYNC_COMPONENTS_PLATFORM_DEFAULT;
enum fsync_component positive = 0, negative = 0;
while (string) {
int i;
size_t len;
const char *ep;
int negated = 0;
int found = 0;
string = string + strspn(string, ", \t\n\r");
ep = strchrnul(string, ',');
len = ep - string;
if (!strcmp(string, "none")) {
current = FSYNC_COMPONENT_NONE;
goto next_name;
}
if (*string == '-') {
negated = 1;
string++;
len--;
if (!len)
warning(_("invalid value for variable %s"), var);
}
if (!len)
break;
for (i = 0; i < ARRAY_SIZE(fsync_component_names); ++i) {
const struct fsync_component_name *n = &fsync_component_names[i];
if (strncmp(n->name, string, len))
continue;
found = 1;
if (negated)
negative |= n->component_bits;
else
positive |= n->component_bits;
}
if (!found) {
char *component = xstrndup(string, len);
warning(_("ignoring unknown core.fsync component '%s'"), component);
free(component);
}
next_name:
string = ep;
}
return (current & ~negative) | positive;
}
int git_config_bool_or_int(const char *name, const char *value,
const struct key_value_info *kvi, int *is_bool)
{
int v = git_parse_maybe_bool_text(value);
if (0 <= v) {
*is_bool = 1;
return v;
}
*is_bool = 0;
return git_config_int(name, value, kvi);
}
int git_config_bool(const char *name, const char *value)
{
int v = git_parse_maybe_bool(value);
if (v < 0)
die(_("bad boolean config value '%s' for '%s'"), value, name);
return v;
}
int git_config_string(const char **dest, const char *var, const char *value)
{
if (!value)
return config_error_nonbool(var);
*dest = xstrdup(value);
return 0;
}
int git_config_pathname(const char **dest, const char *var, const char *value)
{
if (!value)
return config_error_nonbool(var);
*dest = interpolate_path(value, 0);
if (!*dest)
die(_("failed to expand user dir in: '%s'"), value);
return 0;
}
int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *value)
{
if (!value)
return config_error_nonbool(var);
if (parse_expiry_date(value, timestamp))
return error(_("'%s' for '%s' is not a valid timestamp"),
value, var);
return 0;
}
int git_config_color(char *dest, const char *var, const char *value)
{
if (!value)
return config_error_nonbool(var);
if (color_parse(value, dest) < 0)
return -1;
return 0;
}
static int git_default_core_config(const char *var, const char *value,
const struct config_context *ctx, void *cb)
{
/* This needs a better name */
if (!strcmp(var, "core.filemode")) {
trust_executable_bit = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.trustctime")) {
trust_ctime = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.checkstat")) {
if (!value)
return config_error_nonbool(var);
if (!strcasecmp(value, "default"))
check_stat = 1;
else if (!strcasecmp(value, "minimal"))
check_stat = 0;
else
return error(_("invalid value for '%s': '%s'"),
var, value);
}
if (!strcmp(var, "core.quotepath")) {
quote_path_fully = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.symlinks")) {
has_symlinks = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.ignorecase")) {
ignore_case = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.attributesfile"))
return git_config_pathname(&git_attributes_file, var, value);
if (!strcmp(var, "core.hookspath"))
return git_config_pathname(&git_hooks_path, var, value);
if (!strcmp(var, "core.bare")) {
is_bare_repository_cfg = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.ignorestat")) {
assume_unchanged = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.prefersymlinkrefs")) {
prefer_symlink_refs = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.logallrefupdates")) {
if (value && !strcasecmp(value, "always"))
log_all_ref_updates = LOG_REFS_ALWAYS;
else if (git_config_bool(var, value))
log_all_ref_updates = LOG_REFS_NORMAL;
else
log_all_ref_updates = LOG_REFS_NONE;
return 0;
}
if (!strcmp(var, "core.warnambiguousrefs")) {
warn_ambiguous_refs = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.abbrev")) {
if (!value)
return config_error_nonbool(var);
if (!strcasecmp(value, "auto"))
default_abbrev = -1;
else if (!git_parse_maybe_bool_text(value))
default_abbrev = the_hash_algo->hexsz;
else {
int abbrev = git_config_int(var, value, ctx->kvi);
if (abbrev < minimum_abbrev || abbrev > the_hash_algo->hexsz)
return error(_("abbrev length out of range: %d"), abbrev);
default_abbrev = abbrev;
}
return 0;
}
if (!strcmp(var, "core.disambiguate"))
return set_disambiguate_hint_config(var, value);
if (!strcmp(var, "core.loosecompression")) {
int level = git_config_int(var, value, ctx->kvi);
if (level == -1)
level = Z_DEFAULT_COMPRESSION;
else if (level < 0 || level > Z_BEST_COMPRESSION)
die(_("bad zlib compression level %d"), level);
zlib_compression_level = level;
zlib_compression_seen = 1;
return 0;
}
if (!strcmp(var, "core.compression")) {
int level = git_config_int(var, value, ctx->kvi);
if (level == -1)
level = Z_DEFAULT_COMPRESSION;
else if (level < 0 || level > Z_BEST_COMPRESSION)
die(_("bad zlib compression level %d"), level);
if (!zlib_compression_seen)
zlib_compression_level = level;
if (!pack_compression_seen)
pack_compression_level = level;
return 0;
}
if (!strcmp(var, "core.packedgitwindowsize")) {
int pgsz_x2 = getpagesize() * 2;
packed_git_window_size = git_config_ulong(var, value, ctx->kvi);
/* This value must be multiple of (pagesize * 2) */
packed_git_window_size /= pgsz_x2;
if (packed_git_window_size < 1)
packed_git_window_size = 1;
packed_git_window_size *= pgsz_x2;
return 0;
}
if (!strcmp(var, "core.bigfilethreshold")) {
big_file_threshold = git_config_ulong(var, value, ctx->kvi);
return 0;
}
if (!strcmp(var, "core.packedgitlimit")) {
packed_git_limit = git_config_ulong(var, value, ctx->kvi);
return 0;
}
if (!strcmp(var, "core.deltabasecachelimit")) {
delta_base_cache_limit = git_config_ulong(var, value, ctx->kvi);
return 0;
}
if (!strcmp(var, "core.autocrlf")) {
if (value && !strcasecmp(value, "input")) {
auto_crlf = AUTO_CRLF_INPUT;
return 0;
}
auto_crlf = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.safecrlf")) {
int eol_rndtrp_die;
if (value && !strcasecmp(value, "warn")) {
global_conv_flags_eol = CONV_EOL_RNDTRP_WARN;
return 0;
}
eol_rndtrp_die = git_config_bool(var, value);
global_conv_flags_eol = eol_rndtrp_die ?
CONV_EOL_RNDTRP_DIE : 0;
return 0;
}
if (!strcmp(var, "core.eol")) {
if (value && !strcasecmp(value, "lf"))
core_eol = EOL_LF;
else if (value && !strcasecmp(value, "crlf"))
core_eol = EOL_CRLF;
else if (value && !strcasecmp(value, "native"))
core_eol = EOL_NATIVE;
else
core_eol = EOL_UNSET;
return 0;
}
if (!strcmp(var, "core.checkroundtripencoding"))
return git_config_string(&check_roundtrip_encoding, var, value);
if (!strcmp(var, "core.notesref")) {
if (!value)
return config_error_nonbool(var);
notes_ref_name = xstrdup(value);
return 0;
}
if (!strcmp(var, "core.editor"))
return git_config_string(&editor_program, var, value);
if (!strcmp(var, "core.commentchar") ||
!strcmp(var, "core.commentstring")) {
if (!value)
return config_error_nonbool(var);
else if (!strcasecmp(value, "auto"))
auto_comment_line_char = 1;
else if (value[0]) {
if (strchr(value, '\n'))
return error(_("%s cannot contain newline"), var);
comment_line_str = xstrdup(value);
auto_comment_line_char = 0;
} else
return error(_("%s must have at least one character"), var);
return 0;
}
if (!strcmp(var, "core.askpass"))
return git_config_string(&askpass_program, var, value);
if (!strcmp(var, "core.excludesfile")) {
free((char *)excludes_file);
return git_config_pathname(&excludes_file, var, value);
}
if (!strcmp(var, "core.whitespace")) {
if (!value)
return config_error_nonbool(var);
whitespace_rule_cfg = parse_whitespace_rule(value);
return 0;
}
if (!strcmp(var, "core.fsync")) {
if (!value)
return config_error_nonbool(var);
fsync_components = parse_fsync_components(var, value);
return 0;
}
if (!strcmp(var, "core.fsyncmethod")) {
if (!value)
return config_error_nonbool(var);
if (!strcmp(value, "fsync"))
fsync_method = FSYNC_METHOD_FSYNC;
else if (!strcmp(value, "writeout-only"))
fsync_method = FSYNC_METHOD_WRITEOUT_ONLY;
else if (!strcmp(value, "batch"))
fsync_method = FSYNC_METHOD_BATCH;
else
warning(_("ignoring unknown core.fsyncMethod value '%s'"), value);
}
if (!strcmp(var, "core.fsyncobjectfiles")) {
if (fsync_object_files < 0)
warning(_("core.fsyncObjectFiles is deprecated; use core.fsync instead"));
fsync_object_files = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.preloadindex")) {
core_preload_index = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.createobject")) {
if (!value)
return config_error_nonbool(var);
if (!strcmp(value, "rename"))
object_creation_mode = OBJECT_CREATION_USES_RENAMES;
else if (!strcmp(value, "link"))
object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
else
die(_("invalid mode for object creation: %s"), value);
return 0;
}
if (!strcmp(var, "core.sparsecheckout")) {
core_apply_sparse_checkout = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.sparsecheckoutcone")) {
core_sparse_checkout_cone = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "core.precomposeunicode")) {
precomposed_unicode = git_config_bool(var, 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;
}
if (!strcmp(var, "core.maxtreedepth")) {
max_allowed_tree_depth = git_config_int(var, value, ctx->kvi);
return 0;
}
/* Add other config variables here and to Documentation/config.txt. */
return platform_core_config(var, value, ctx, cb);
}
static int git_default_sparse_config(const char *var, const char *value)
{
if (!strcmp(var, "sparse.expectfilesoutsideofpatterns")) {
sparse_expect_files_outside_of_patterns = git_config_bool(var, value);
return 0;
}
/* Add other config variables here and to Documentation/config/sparse.txt. */
return 0;
}
static int git_default_i18n_config(const char *var, const char *value)
{
if (!strcmp(var, "i18n.commitencoding"))
return git_config_string(&git_commit_encoding, var, value);
if (!strcmp(var, "i18n.logoutputencoding"))
return git_config_string(&git_log_output_encoding, var, value);
/* Add other config variables here and to Documentation/config.txt. */
return 0;
}
static int git_default_branch_config(const char *var, const char *value)
{
if (!strcmp(var, "branch.autosetupmerge")) {
if (value && !strcmp(value, "always")) {
git_branch_track = BRANCH_TRACK_ALWAYS;
return 0;
} else if (value && !strcmp(value, "inherit")) {
git_branch_track = BRANCH_TRACK_INHERIT;
return 0;
} else if (value && !strcmp(value, "simple")) {
git_branch_track = BRANCH_TRACK_SIMPLE;
return 0;
}
git_branch_track = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "branch.autosetuprebase")) {
if (!value)
return config_error_nonbool(var);
else if (!strcmp(value, "never"))
autorebase = AUTOREBASE_NEVER;
else if (!strcmp(value, "local"))
autorebase = AUTOREBASE_LOCAL;
else if (!strcmp(value, "remote"))
autorebase = AUTOREBASE_REMOTE;
else if (!strcmp(value, "always"))
autorebase = AUTOREBASE_ALWAYS;
else
return error(_("malformed value for %s"), var);
return 0;
}
/* Add other config variables here and to Documentation/config.txt. */
return 0;
}
static int git_default_push_config(const char *var, const char *value)
{
if (!strcmp(var, "push.default")) {
if (!value)
return config_error_nonbool(var);
else if (!strcmp(value, "nothing"))
push_default = PUSH_DEFAULT_NOTHING;
else if (!strcmp(value, "matching"))
push_default = PUSH_DEFAULT_MATCHING;
else if (!strcmp(value, "simple"))
push_default = PUSH_DEFAULT_SIMPLE;
else if (!strcmp(value, "upstream"))
push_default = PUSH_DEFAULT_UPSTREAM;
else if (!strcmp(value, "tracking")) /* deprecated */
push_default = PUSH_DEFAULT_UPSTREAM;
else if (!strcmp(value, "current"))
push_default = PUSH_DEFAULT_CURRENT;
else {
error(_("malformed value for %s: %s"), var, value);
return error(_("must be one of nothing, matching, simple, "
"upstream or current"));
}
return 0;
}
/* Add other config variables here and to Documentation/config.txt. */
return 0;
}
static int git_default_mailmap_config(const char *var, const char *value)
{
if (!strcmp(var, "mailmap.file"))
return git_config_pathname(&git_mailmap_file, var, value);
if (!strcmp(var, "mailmap.blob"))
return git_config_string(&git_mailmap_blob, var, value);
/* Add other config variables here and to Documentation/config.txt. */
return 0;
}
static int git_default_attr_config(const char *var, const char *value)
{
if (!strcmp(var, "attr.tree"))
return git_config_string(&git_attr_tree, var, value);
/*
* Add other attribute related config variables here and to
* Documentation/config/attr.txt.
*/
return 0;
}
int git_default_config(const char *var, const char *value,
const struct config_context *ctx, void *cb)
{
if (starts_with(var, "core."))
return git_default_core_config(var, value, ctx, cb);
if (starts_with(var, "user.") ||
starts_with(var, "author.") ||
starts_with(var, "committer."))
return git_ident_config(var, value, ctx, cb);
if (starts_with(var, "i18n."))
return git_default_i18n_config(var, value);
if (starts_with(var, "branch."))
return git_default_branch_config(var, value);
if (starts_with(var, "push."))
return git_default_push_config(var, value);
if (starts_with(var, "mailmap."))
return git_default_mailmap_config(var, value);
if (starts_with(var, "attr."))
return git_default_attr_config(var, value);
if (starts_with(var, "advice.") || starts_with(var, "color.advice"))
return git_default_advice_config(var, value);
if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
pager_use_color = git_config_bool(var,value);
return 0;
}
if (!strcmp(var, "pack.packsizelimit")) {
pack_size_limit_cfg = git_config_ulong(var, value, ctx->kvi);
return 0;
}
if (!strcmp(var, "pack.compression")) {
int level = git_config_int(var, value, ctx->kvi);
if (level == -1)
level = Z_DEFAULT_COMPRESSION;
else if (level < 0 || level > Z_BEST_COMPRESSION)
die(_("bad pack compression level %d"), level);
pack_compression_level = level;
pack_compression_seen = 1;
return 0;
}
if (starts_with(var, "sparse."))
return git_default_sparse_config(var, value);
/* Add other config variables here and to Documentation/config.txt. */
return 0;
}
/*
* All source specific fields in the union, die_on_error, name and the callbacks
* fgetc, ungetc, ftell of top need to be initialized before calling
* this function.
*/
static int do_config_from(struct config_source *top, config_fn_t fn,
void *data, enum config_scope scope,
const struct config_options *opts)
{
struct key_value_info kvi = KVI_INIT;
int ret;
/* push config-file parsing state stack */
top->linenr = 1;
top->eof = 0;
top->total_len = 0;
strbuf_init(&top->value, 1024);
strbuf_init(&top->var, 1024);
kvi_from_source(top, scope, &kvi);
ret = git_parse_source(top, fn, &kvi, data, opts);
strbuf_release(&top->value);
strbuf_release(&top->var);
return ret;
}
static int do_config_from_file(config_fn_t fn,
const enum config_origin_type origin_type,
const char *name, const char *path, FILE *f,
void *data, enum config_scope scope,
const struct config_options *opts)
{
struct config_source top = CONFIG_SOURCE_INIT;
int ret;
top.u.file = f;
top.origin_type = origin_type;
top.name = name;
top.path = path;
top.default_error_action = CONFIG_ERROR_DIE;
top.do_fgetc = config_file_fgetc;
top.do_ungetc = config_file_ungetc;
top.do_ftell = config_file_ftell;
flockfile(f);
ret = do_config_from(&top, fn, data, scope, opts);
funlockfile(f);
return ret;
}
static int git_config_from_stdin(config_fn_t fn, void *data,
enum config_scope scope)
{
return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin,
data, scope, NULL);
}
int git_config_from_file_with_options(config_fn_t fn, const char *filename,
void *data, enum config_scope scope,
const struct config_options *opts)
{
int ret = -1;
FILE *f;
if (!filename)
BUG("filename cannot be NULL");
f = fopen_or_warn(filename, "r");
if (f) {
ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename,
filename, f, data, scope, opts);
fclose(f);
}
return ret;
}
int git_config_from_file(config_fn_t fn, const char *filename, void *data)
{
return git_config_from_file_with_options(fn, filename, data,
CONFIG_SCOPE_UNKNOWN, NULL);
}
int git_config_from_mem(config_fn_t fn,
const enum config_origin_type origin_type,
const char *name, const char *buf, size_t len,
void *data, enum config_scope scope,
const struct config_options *opts)
{
struct config_source top = CONFIG_SOURCE_INIT;
top.u.buf.buf = buf;
top.u.buf.len = len;
top.u.buf.pos = 0;
top.origin_type = origin_type;
top.name = name;
top.path = NULL;
top.default_error_action = CONFIG_ERROR_ERROR;
top.do_fgetc = config_buf_fgetc;
top.do_ungetc = config_buf_ungetc;
top.do_ftell = config_buf_ftell;
return do_config_from(&top, fn, data, scope, opts);
}
int git_config_from_blob_oid(config_fn_t fn,
const char *name,
struct repository *repo,
const struct object_id *oid,
void *data,
enum config_scope scope)
{
enum object_type type;
char *buf;
unsigned long size;
int ret;
buf = repo_read_object_file(repo, oid, &type, &size);
if (!buf)
return error(_("unable to load config blob object '%s'"), name);
if (type != OBJ_BLOB) {
free(buf);
return error(_("reference '%s' does not point to a blob"), name);
}
ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size,
data, scope, NULL);
free(buf);
return ret;
}
static int git_config_from_blob_ref(config_fn_t fn,
struct repository *repo,
const char *name,
void *data,
enum config_scope scope)
{
struct object_id oid;
if (repo_get_oid(repo, name, &oid) < 0)
return error(_("unable to resolve config blob '%s'"), name);
return git_config_from_blob_oid(fn, name, repo, &oid, data, scope);
}
char *git_system_config(void)
{
char *system_config = xstrdup_or_null(getenv("GIT_CONFIG_SYSTEM"));
if (!system_config)
system_config = system_path(ETC_GITCONFIG);
normalize_path_copy(system_config, system_config);
return system_config;
}
char *git_global_config(void)
{
char *user_config, *xdg_config;
git_global_config_paths(&user_config, &xdg_config);
if (!user_config) {
free(xdg_config);
return NULL;
}
if (access_or_warn(user_config, R_OK, 0) && xdg_config &&
!access_or_warn(xdg_config, R_OK, 0)) {
free(user_config);
return xdg_config;
} else {
free(xdg_config);
return user_config;
}
}
void git_global_config_paths(char **user_out, char **xdg_out)
{
char *user_config = xstrdup_or_null(getenv("GIT_CONFIG_GLOBAL"));
char *xdg_config = NULL;
if (!user_config) {
user_config = interpolate_path("~/.gitconfig", 0);
xdg_config = xdg_config_home("config");
}
*user_out = user_config;
*xdg_out = xdg_config;
}
int git_config_system(void)
{
return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
}
static int do_git_config_sequence(const struct config_options *opts,
const struct repository *repo,
config_fn_t fn, void *data)
{
int ret = 0;
char *system_config = git_system_config();
char *xdg_config = NULL;
char *user_config = NULL;
char *repo_config;
char *worktree_config;
/*
* Ensure that either:
* - the git_dir and commondir are both set, or
* - the git_dir and commondir are both NULL
*/
if (!opts->git_dir != !opts->commondir)
BUG("only one of commondir and git_dir is non-NULL");
if (opts->commondir) {
repo_config = mkpathdup("%s/config", opts->commondir);
worktree_config = mkpathdup("%s/config.worktree", opts->git_dir);
} else {
repo_config = NULL;
worktree_config = NULL;
}
if (git_config_system() && system_config &&
!access_or_die(system_config, R_OK,
opts->system_gently ? ACCESS_EACCES_OK : 0))
ret += git_config_from_file_with_options(fn, system_config,
data, CONFIG_SCOPE_SYSTEM,
NULL);
git_global_config_paths(&user_config, &xdg_config);
if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
ret += git_config_from_file_with_options(fn, xdg_config, data,
CONFIG_SCOPE_GLOBAL, NULL);
if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
ret += git_config_from_file_with_options(fn, user_config, data,
CONFIG_SCOPE_GLOBAL, NULL);
if (!opts->ignore_repo && repo_config &&
!access_or_die(repo_config, R_OK, 0))
ret += git_config_from_file_with_options(fn, repo_config, data,
CONFIG_SCOPE_LOCAL, NULL);
if (!opts->ignore_worktree && worktree_config &&
repo && repo->repository_format_worktree_config &&
!access_or_die(worktree_config, R_OK, 0)) {
ret += git_config_from_file_with_options(fn, worktree_config, data,
CONFIG_SCOPE_WORKTREE,
NULL);
}
if (!opts->ignore_cmdline && git_config_from_parameters(fn, data) < 0)
die(_("unable to parse command-line config"));
free(system_config);
free(xdg_config);
free(user_config);
free(repo_config);
free(worktree_config);
return ret;
}
int config_with_options(config_fn_t fn, void *data,
struct git_config_source *config_source,
struct repository *repo,
const struct config_options *opts)
{
struct config_include_data inc = CONFIG_INCLUDE_INIT;
int ret;
if (opts->respect_includes) {
inc.fn = fn;
inc.data = data;
inc.opts = opts;
inc.repo = repo;
inc.config_source = config_source;
fn = git_config_include;
data = &inc;
}
/*
* If we have a specific filename, use it. Otherwise, follow the
* regular lookup sequence.
*/
if (config_source && config_source->use_stdin) {
ret = git_config_from_stdin(fn, data, config_source->scope);
} else if (config_source && config_source->file) {
ret = git_config_from_file_with_options(fn, config_source->file,
data, config_source->scope,
NULL);
} else if (config_source && config_source->blob) {
ret = git_config_from_blob_ref(fn, repo, config_source->blob,
data, config_source->scope);
} else {
ret = do_git_config_sequence(opts, repo, fn, data);
}
if (inc.remote_urls) {
string_list_clear(inc.remote_urls, 0);
FREE_AND_NULL(inc.remote_urls);
}
return ret;
}
static void configset_iter(struct config_set *set, config_fn_t fn, void *data)
{
int i, value_index;
struct string_list *values;
struct config_set_element *entry;
struct configset_list *list = &set->list;
struct config_context ctx = CONFIG_CONTEXT_INIT;
for (i = 0; i < list->nr; i++) {
entry = list->items[i].e;
value_index = list->items[i].value_index;
values = &entry->value_list;
ctx.kvi = values->items[value_index].util;
if (fn(entry->key, values->items[value_index].string, &ctx, data) < 0)
git_die_config_linenr(entry->key,
ctx.kvi->filename,
ctx.kvi->linenr);
}
}
void read_early_config(config_fn_t cb, void *data)
{
struct config_options opts = {0};
struct strbuf commondir = STRBUF_INIT;
struct strbuf gitdir = STRBUF_INIT;
opts.respect_includes = 1;
if (have_git_dir()) {
opts.commondir = get_git_common_dir();
opts.git_dir = get_git_dir();
/*
* When setup_git_directory() was not yet asked to discover the
* GIT_DIR, we ask discover_git_directory() to figure out whether there
* is any repository config we should use (but unlike
* setup_git_directory_gently(), no global state is changed, most
* notably, the current working directory is still the same after the
* call).
*/
} else if (!discover_git_directory(&commondir, &gitdir)) {
opts.commondir = commondir.buf;
opts.git_dir = gitdir.buf;
}
config_with_options(cb, data, NULL, NULL, &opts);
strbuf_release(&commondir);
strbuf_release(&gitdir);
}
/*
* Read config but only enumerate system and global settings.
* Omit any repo-local, worktree-local, or command-line settings.
*/
void read_very_early_config(config_fn_t cb, void *data)
{
struct config_options opts = { 0 };
opts.respect_includes = 1;
opts.ignore_repo = 1;
opts.ignore_worktree = 1;
opts.ignore_cmdline = 1;
opts.system_gently = 1;
config_with_options(cb, data, NULL, NULL, &opts);
}
RESULT_MUST_BE_USED
static int configset_find_element(struct config_set *set, const char *key,
struct config_set_element **dest)
{
struct config_set_element k;
struct config_set_element *found_entry;
char *normalized_key;
int ret;
/*
* `key` may come from the user, so normalize it before using it
* for querying entries from the hashmap.
*/
ret = git_config_parse_key(key, &normalized_key, NULL);
if (ret)
return ret;
hashmap_entry_init(&k.ent, strhash(normalized_key));
k.key = normalized_key;
found_entry = hashmap_get_entry(&set->config_hash, &k, ent, NULL);
free(normalized_key);
*dest = found_entry;
return 0;
}
static int configset_add_value(const struct key_value_info *kvi_p,
struct config_set *set, const char *key,
const char *value)
{
struct config_set_element *e;
struct string_list_item *si;
struct configset_list_item *l_item;
struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
int ret;
ret = configset_find_element(set, key, &e);
if (ret)
return ret;
/*
* Since the keys are being fed by git_config*() callback mechanism, they
* are already normalized. So simply add them without any further munging.
*/
if (!e) {
e = xmalloc(sizeof(*e));
hashmap_entry_init(&e->ent, strhash(key));
e->key = xstrdup(key);
string_list_init_dup(&e->value_list);
hashmap_add(&set->config_hash, &e->ent);
}
si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
ALLOC_GROW(set->list.items, set->list.nr + 1, set->list.alloc);
l_item = &set->list.items[set->list.nr++];
l_item->e = e;
l_item->value_index = e->value_list.nr - 1;
*kv_info = *kvi_p;
si->util = kv_info;
return 0;
}
static int config_set_element_cmp(const void *cmp_data UNUSED,
const struct hashmap_entry *eptr,
const struct hashmap_entry *entry_or_key,
const void *keydata UNUSED)
{
const struct config_set_element *e1, *e2;
e1 = container_of(eptr, const struct config_set_element, ent);
e2 = container_of(entry_or_key, const struct config_set_element, ent);
return strcmp(e1->key, e2->key);
}
void git_configset_init(struct config_set *set)
{
hashmap_init(&set->config_hash, config_set_element_cmp, NULL, 0);
set->hash_initialized = 1;
set->list.nr = 0;
set->list.alloc = 0;
set->list.items = NULL;
}
void git_configset_clear(struct config_set *set)
{
struct config_set_element *entry;
struct hashmap_iter iter;
if (!set->hash_initialized)
return;
hashmap_for_each_entry(&set->config_hash, &iter, entry,
ent /* member name */) {
free(entry->key);
string_list_clear(&entry->value_list, 1);
}
hashmap_clear_and_free(&set->config_hash, struct config_set_element, ent);
set->hash_initialized = 0;
free(set->list.items);
set->list.nr = 0;
set->list.alloc = 0;
set->list.items = NULL;
}
static int config_set_callback(const char *key, const char *value,
const struct config_context *ctx,
void *cb)
{
struct config_set *set = cb;
configset_add_value(ctx->kvi, set, key, value);
return 0;
}
int git_configset_add_file(struct config_set *set, const char *filename)
{
return git_config_from_file(config_set_callback, filename, set);
}
int git_configset_get_value(struct config_set *set, const char *key,
const char **value, struct key_value_info *kvi)
{
const struct string_list *values = NULL;
int ret;
struct string_list_item item;
/*
* Follows "last one wins" semantic, i.e., if there are multiple matches for the
* queried key in the files of the configset, the value returned will be the last
* value in the value list for that key.
*/
if ((ret = git_configset_get_value_multi(set, key, &values)))
return ret;
assert(values->nr > 0);
item = values->items[values->nr - 1];
*value = item.string;
if (kvi)
*kvi = *((struct key_value_info *)item.util);
return 0;
}
int git_configset_get_value_multi(struct config_set *set, const char *key,
const struct string_list **dest)
{
struct config_set_element *e;
int ret;
if ((ret = configset_find_element(set, key, &e)))
return ret;
else if (!e)
return 1;
*dest = &e->value_list;
return 0;
}
static int check_multi_string(struct string_list_item *item, void *util)
{
return item->string ? 0 : config_error_nonbool(util);
}
int git_configset_get_string_multi(struct config_set *cs, const char *key,
const struct string_list **dest)
{
int ret;
if ((ret = git_configset_get_value_multi(cs, key, dest)))
return ret;
if ((ret = for_each_string_list((struct string_list *)*dest,
check_multi_string, (void *)key)))
return ret;
return 0;
}
int git_configset_get(struct config_set *set, const char *key)
{
struct config_set_element *e;
int ret;
if ((ret = configset_find_element(set, key, &e)))
return ret;
else if (!e)
return 1;
return 0;
}
int git_configset_get_string(struct config_set *set, const char *key, char **dest)
{
const char *value;
if (!git_configset_get_value(set, key, &value, NULL))
return git_config_string((const char **)dest, key, value);
else
return 1;
}
static int git_configset_get_string_tmp(struct config_set *set, const char *key,
const char **dest)
{
const char *value;
if (!git_configset_get_value(set, key, &value, NULL)) {
if (!value)
return config_error_nonbool(key);
*dest = value;
return 0;
} else {
return 1;
}
}
int git_configset_get_int(struct config_set *set, const char *key, int *dest)
{
const char *value;
struct key_value_info kvi;
if (!git_configset_get_value(set, key, &value, &kvi)) {
*dest = git_config_int(key, value, &kvi);
return 0;
} else
return 1;
}
int git_configset_get_ulong(struct config_set *set, const char *key, unsigned long *dest)
{
const char *value;
struct key_value_info kvi;
if (!git_configset_get_value(set, key, &value, &kvi)) {
*dest = git_config_ulong(key, value, &kvi);
return 0;
} else
return 1;
}
int git_configset_get_bool(struct config_set *set, const char *key, int *dest)
{
const char *value;
if (!git_configset_get_value(set, key, &value, NULL)) {
*dest = git_config_bool(key, value);
return 0;
} else
return 1;
}
int git_configset_get_bool_or_int(struct config_set *set, const char *key,
int *is_bool, int *dest)
{
const char *value;
struct key_value_info kvi;
if (!git_configset_get_value(set, key, &value, &kvi)) {
*dest = git_config_bool_or_int(key, value, &kvi, is_bool);
return 0;
} else
return 1;
}
int git_configset_get_maybe_bool(struct config_set *set, const char *key, int *dest)
{
const char *value;
if (!git_configset_get_value(set, key, &value, NULL)) {
*dest = git_parse_maybe_bool(value);
if (*dest == -1)
return -1;
return 0;
} else
return 1;
}
int git_configset_get_pathname(struct config_set *set, const char *key, const char **dest)
{
const char *value;
if (!git_configset_get_value(set, key, &value, NULL))
return git_config_pathname(dest, key, value);
else
return 1;
}
/* Functions use to read configuration from a repository */
static void repo_read_config(struct repository *repo)
{
struct config_options opts = { 0 };
opts.respect_includes = 1;
opts.commondir = repo->commondir;
opts.git_dir = repo->gitdir;
if (!repo->config)
CALLOC_ARRAY(repo->config, 1);
else
git_configset_clear(repo->config);
git_configset_init(repo->config);
if (config_with_options(config_set_callback, repo->config, NULL,
repo, &opts) < 0)
/*
* config_with_options() normally returns only
* zero, as most errors are fatal, and
* non-fatal potential errors are guarded by "if"
* statements that are entered only when no error is
* possible.
*
* If we ever encounter a non-fatal error, it means
* something went really wrong and we should stop
* immediately.
*/
die(_("unknown error occurred while reading the configuration files"));
}
static void git_config_check_init(struct repository *repo)
{
if (repo->config && repo->config->hash_initialized)
return;
repo_read_config(repo);
}
static void repo_config_clear(struct repository *repo)
{
if (!repo->config || !repo->config->hash_initialized)
return;
git_configset_clear(repo->config);
}
void repo_config(struct repository *repo, config_fn_t fn, void *data)
{
git_config_check_init(repo);
configset_iter(repo->config, fn, data);
}
int repo_config_get(struct repository *repo, const char *key)
{
git_config_check_init(repo);
return git_configset_get(repo->config, key);
}
int repo_config_get_value(struct repository *repo,
const char *key, const char **value)
{
git_config_check_init(repo);
return git_configset_get_value(repo->config, key, value, NULL);
}
int repo_config_get_value_multi(struct repository *repo, const char *key,
const struct string_list **dest)
{
git_config_check_init(repo);
return git_configset_get_value_multi(repo->config, key, dest);
}
int repo_config_get_string_multi(struct repository *repo, const char *key,
const struct string_list **dest)
{
git_config_check_init(repo);
return git_configset_get_string_multi(repo->config, key, dest);
}
int repo_config_get_string(struct repository *repo,
const char *key, char **dest)
{
int ret;
git_config_check_init(repo);
ret = git_configset_get_string(repo->config, key, dest);
if (ret < 0)
git_die_config(key, NULL);
return ret;
}
int repo_config_get_string_tmp(struct repository *repo,
const char *key, const char **dest)
{
int ret;
git_config_check_init(repo);
ret = git_configset_get_string_tmp(repo->config, key, dest);
if (ret < 0)
git_die_config(key, NULL);
return ret;
}
int repo_config_get_int(struct repository *repo,
const char *key, int *dest)
{
git_config_check_init(repo);
return git_configset_get_int(repo->config, key, dest);
}
int repo_config_get_ulong(struct repository *repo,
const char *key, unsigned long *dest)
{
git_config_check_init(repo);
return git_configset_get_ulong(repo->config, key, dest);
}
int repo_config_get_bool(struct repository *repo,
const char *key, int *dest)
{
git_config_check_init(repo);
return git_configset_get_bool(repo->config, key, dest);
}
int repo_config_get_bool_or_int(struct repository *repo,
const char *key, int *is_bool, int *dest)
{
git_config_check_init(repo);
return git_configset_get_bool_or_int(repo->config, key, is_bool, dest);
}
int repo_config_get_maybe_bool(struct repository *repo,
const char *key, int *dest)
{
git_config_check_init(repo);
return git_configset_get_maybe_bool(repo->config, key, dest);
}
int repo_config_get_pathname(struct repository *repo,
const char *key, const char **dest)
{
int ret;
git_config_check_init(repo);
ret = git_configset_get_pathname(repo->config, key, dest);
if (ret < 0)
git_die_config(key, NULL);
return ret;
}
/* Read values into protected_config. */
static void read_protected_config(void)
{
struct config_options opts = {
.respect_includes = 1,
.ignore_repo = 1,
.ignore_worktree = 1,
.system_gently = 1,
};
git_configset_init(&protected_config);
config_with_options(config_set_callback, &protected_config, NULL,
NULL, &opts);
}
void git_protected_config(config_fn_t fn, void *data)
{
if (!protected_config.hash_initialized)
read_protected_config();
configset_iter(&protected_config, fn, data);
}
/* Functions used historically to read configuration from 'the_repository' */
void git_config(config_fn_t fn, void *data)
{
repo_config(the_repository, fn, data);
}
void git_config_clear(void)
{
repo_config_clear(the_repository);
}
int git_config_get(const char *key)
{
return repo_config_get(the_repository, key);
}
int git_config_get_value(const char *key, const char **value)
{
return repo_config_get_value(the_repository, key, value);
}
int git_config_get_value_multi(const char *key, const struct string_list **dest)
{
return repo_config_get_value_multi(the_repository, key, dest);
}
int git_config_get_string_multi(const char *key,
const struct string_list **dest)
{
return repo_config_get_string_multi(the_repository, key, dest);
}
int git_config_get_string(const char *key, char **dest)
{
return repo_config_get_string(the_repository, key, dest);
}
int git_config_get_string_tmp(const char *key, const char **dest)
{
return repo_config_get_string_tmp(the_repository, key, dest);
}
int git_config_get_int(const char *key, int *dest)
{
return repo_config_get_int(the_repository, key, dest);
}
int git_config_get_ulong(const char *key, unsigned long *dest)
{
return repo_config_get_ulong(the_repository, key, dest);
}
int git_config_get_bool(const char *key, int *dest)
{
return repo_config_get_bool(the_repository, key, dest);
}
int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
{
return repo_config_get_bool_or_int(the_repository, key, is_bool, dest);
}
int git_config_get_maybe_bool(const char *key, int *dest)
{
return repo_config_get_maybe_bool(the_repository, key, dest);
}
int git_config_get_pathname(const char *key, const char **dest)
{
return repo_config_get_pathname(the_repository, key, dest);
}
int git_config_get_expiry(const char *key, const char **output)
{
int ret = git_config_get_string(key, (char **)output);
if (ret)
return ret;
if (strcmp(*output, "now")) {
timestamp_t now = approxidate("now");
if (approxidate(*output) >= now)
git_die_config(key, _("Invalid %s: '%s'"), key, *output);
}
return ret;
}
int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestamp_t now)
{
const char *expiry_string;
intmax_t days;
timestamp_t when;
if (git_config_get_string_tmp(key, &expiry_string))
return 1; /* no such thing */
if (git_parse_signed(expiry_string, &days, maximum_signed_value_of_type(int))) {
const int scale = 86400;
*expiry = now - days * scale;
return 0;
}
if (!parse_expiry_date(expiry_string, &when)) {
*expiry = when;
return 0;
}
return -1; /* thing exists but cannot be parsed */
}
int git_config_get_split_index(void)
{
int val;
if (!git_config_get_maybe_bool("core.splitindex", &val))
return val;
return -1; /* default value */
}
int git_config_get_max_percent_split_change(void)
{
int val = -1;
if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
if (0 <= val && val <= 100)
return val;
return error(_("splitIndex.maxPercentChange value '%d' "
"should be between 0 and 100"), val);
}
return -1; /* default value */
}
int git_config_get_index_threads(int *dest)
{
int is_bool, val;
val = git_env_ulong("GIT_TEST_INDEX_THREADS", 0);
if (val) {
*dest = val;
return 0;
}
if (!git_config_get_bool_or_int("index.threads", &is_bool, &val)) {
if (is_bool)
*dest = val ? 0 : 1;
else
*dest = val;
return 0;
}
return 1;
}
NORETURN
void git_die_config_linenr(const char *key, const char *filename, int linenr)
{
if (!filename)
die(_("unable to parse '%s' from command-line config"), key);
else
die(_("bad config variable '%s' in file '%s' at line %d"),
key, filename, linenr);
}
void git_die_config(const char *key, const char *err, ...)
{
const struct string_list *values;
struct key_value_info *kv_info;
report_fn error_fn = get_error_routine();
if (err) {
va_list params;
va_start(params, err);
error_fn(err, params);
va_end(params);
}
if (git_config_get_value_multi(key, &values))
BUG("for key '%s' we must have a value to report on", key);
kv_info = values->items[values->nr - 1].util;
git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
}
/*
* Find all the stuff for git_config_set() below.
*/
struct config_store_data {
size_t baselen;
char *key;
int do_not_match;
const char *fixed_value;
regex_t *value_pattern;
int multi_replace;
struct {
size_t begin, end;
enum config_event_t type;
int is_keys_section;
} *parsed;
unsigned int parsed_nr, parsed_alloc, *seen, seen_nr, seen_alloc;
unsigned int key_seen:1, section_seen:1, is_keys_section:1;
};
#define CONFIG_STORE_INIT { 0 }
static void config_store_data_clear(struct config_store_data *store)
{
free(store->key);
if (store->value_pattern != NULL &&
store->value_pattern != CONFIG_REGEX_NONE) {
regfree(store->value_pattern);
free(store->value_pattern);
}
free(store->parsed);
free(store->seen);
memset(store, 0, sizeof(*store));
}
static int matches(const char *key, const char *value,
const struct config_store_data *store)
{
if (strcmp(key, store->key))
return 0; /* not ours */
if (store->fixed_value)
return !strcmp(store->fixed_value, value);
if (!store->value_pattern)
return 1; /* always matches */
if (store->value_pattern == CONFIG_REGEX_NONE)
return 0; /* never matches */
return store->do_not_match ^
(value && !regexec(store->value_pattern, value, 0, NULL, 0));
}
static int store_aux_event(enum config_event_t type, size_t begin, size_t end,
struct config_source *cs, void *data)
{
struct config_store_data *store = data;
ALLOC_GROW(store->parsed, store->parsed_nr + 1, store->parsed_alloc);
store->parsed[store->parsed_nr].begin = begin;
store->parsed[store->parsed_nr].end = end;
store->parsed[store->parsed_nr].type = type;
if (type == CONFIG_EVENT_SECTION) {
int (*cmpfn)(const char *, const char *, size_t);
if (cs->var.len < 2 || cs->var.buf[cs->var.len - 1] != '.')
return error(_("invalid section name '%s'"), cs->var.buf);
if (cs->subsection_case_sensitive)
cmpfn = strncasecmp;
else
cmpfn = strncmp;
/* Is this the section we were looking for? */
store->is_keys_section =
store->parsed[store->parsed_nr].is_keys_section =
cs->var.len - 1 == store->baselen &&
!cmpfn(cs->var.buf, store->key, store->baselen);
if (store->is_keys_section) {
store->section_seen = 1;
ALLOC_GROW(store->seen, store->seen_nr + 1,
store->seen_alloc);
store->seen[store->seen_nr] = store->parsed_nr;
}
}
store->parsed_nr++;
return 0;
}
static int store_aux(const char *key, const char *value,
const struct config_context *ctx UNUSED, void *cb)
{
struct config_store_data *store = cb;
if (store->key_seen) {
if (matches(key, value, store)) {
if (store->seen_nr == 1 && store->multi_replace == 0) {
warning(_("%s has multiple values"), key);
}
ALLOC_GROW(store->seen, store->seen_nr + 1,
store->seen_alloc);
store->seen[store->seen_nr] = store->parsed_nr;
store->seen_nr++;
}
} else if (store->is_keys_section) {
/*
* Do not increment matches yet: this may not be a match, but we
* are in the desired section.
*/
ALLOC_GROW(store->seen, store->seen_nr + 1, store->seen_alloc);
store->seen[store->seen_nr] = store->parsed_nr;
store->section_seen = 1;
if (matches(key, value, store)) {
store->seen_nr++;
store->key_seen = 1;
}
}
return 0;
}
static int write_error(const char *filename)
{
error(_("failed to write new configuration file %s"), filename);
/* Same error code as "failed to rename". */
return 4;
}
static struct strbuf store_create_section(const char *key,
const struct config_store_data *store)
{
const char *dot;
size_t i;
struct strbuf sb = STRBUF_INIT;
dot = memchr(key, '.', store->baselen);
if (dot) {
strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
for (i = dot - key + 1; i < store->baselen; i++) {
if (key[i] == '"' || key[i] == '\\')
strbuf_addch(&sb, '\\');
strbuf_addch(&sb, key[i]);
}
strbuf_addstr(&sb, "\"]\n");
} else {
strbuf_addch(&sb, '[');
strbuf_add(&sb, key, store->baselen);
strbuf_addstr(&sb, "]\n");
}
return sb;
}
static ssize_t write_section(int fd, const char *key,
const struct config_store_data *store)
{
struct strbuf sb = store_create_section(key, store);
ssize_t ret;
ret = write_in_full(fd, sb.buf, sb.len);
strbuf_release(&sb);
return ret;
}
static ssize_t write_pair(int fd, const char *key, const char *value,
const char *comment,
const struct config_store_data *store)
{
int i;
ssize_t ret;
const char *quote = "";
struct strbuf sb = STRBUF_INIT;
/*
* Check to see if the value needs to be surrounded with a dq pair.
* Note that problematic characters are always backslash-quoted; this
* check is about not losing leading or trailing SP and strings that
* follow beginning-of-comment characters (i.e. ';' and '#') by the
* configuration parser.
*/
if (value[0] == ' ')
quote = "\"";
for (i = 0; value[i]; i++)
if (value[i] == ';' || value[i] == '#')
quote = "\"";
if (i && value[i - 1] == ' ')
quote = "\"";
strbuf_addf(&sb, "\t%s = %s", key + store->baselen + 1, quote);
for (i = 0; value[i]; i++)
switch (value[i]) {
case '\n':
strbuf_addstr(&sb, "\\n");
break;
case '\t':
strbuf_addstr(&sb, "\\t");
break;
case '"':
case '\\':
strbuf_addch(&sb, '\\');
/* fallthrough */
default:
strbuf_addch(&sb, value[i]);
break;
}
if (comment)
strbuf_addf(&sb, "%s%s\n", quote, comment);
else
strbuf_addf(&sb, "%s\n", quote);
ret = write_in_full(fd, sb.buf, sb.len);
strbuf_release(&sb);
return ret;
}
/*
* If we are about to unset the last key(s) in a section, and if there are
* no comments surrounding (or included in) the section, we will want to
* extend begin/end to remove the entire section.
*
* Note: the parameter `seen_ptr` points to the index into the store.seen
* array. * This index may be incremented if a section has more than one
* entry (which all are to be removed).
*/
static void maybe_remove_section(struct config_store_data *store,
size_t *begin_offset, size_t *end_offset,
int *seen_ptr)
{
size_t begin;
int i, seen, section_seen = 0;
/*
* First, ensure that this is the first key, and that there are no
* comments before the entry nor before the section header.
*/
seen = *seen_ptr;
for (i = store->seen[seen]; i > 0; i--) {
enum config_event_t type = store->parsed[i - 1].type;
if (type == CONFIG_EVENT_COMMENT)
/* There is a comment before this entry or section */
return;
if (type == CONFIG_EVENT_ENTRY) {
if (!section_seen)
/* This is not the section's first entry. */
return;
/* We encountered no comment before the section. */
break;
}
if (type == CONFIG_EVENT_SECTION) {
if (!store->parsed[i - 1].is_keys_section)
break;
section_seen = 1;
}
}
begin = store->parsed[i].begin;
/*
* Next, make sure that we are removing the last key(s) in the section,
* and that there are no comments that are possibly about the current
* section.
*/
for (i = store->seen[seen] + 1; i < store->parsed_nr; i++) {
enum config_event_t type = store->parsed[i].type;
if (type == CONFIG_EVENT_COMMENT)
return;
if (type == CONFIG_EVENT_SECTION) {
if (store->parsed[i].is_keys_section)
continue;
break;
}
if (type == CONFIG_EVENT_ENTRY) {
if (++seen < store->seen_nr &&
i == store->seen[seen])
/* We want to remove this entry, too */
continue;
/* There is another entry in this section. */
return;
}
}
/*
* We are really removing the last entry/entries from this section, and
* there are no enclosed or surrounding comments. Remove the entire,
* now-empty section.
*/
*seen_ptr = seen;
*begin_offset = begin;
if (i < store->parsed_nr)
*end_offset = store->parsed[i].begin;
else
*end_offset = store->parsed[store->parsed_nr - 1].end;
}
int git_config_set_in_file_gently(const char *config_filename,
const char *key, const char *comment, const char *value)
{
return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, comment, 0);
}
void git_config_set_in_file(const char *config_filename,
const char *key, const char *value)
{
git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
}
int git_config_set_gently(const char *key, const char *value)
{
return git_config_set_multivar_gently(key, value, NULL, 0);
}
int repo_config_set_worktree_gently(struct repository *r,
const char *key, const char *value)
{
/* Only use worktree-specific config if it is already enabled. */
if (r->repository_format_worktree_config) {
char *file = repo_git_path(r, "config.worktree");
int ret = git_config_set_multivar_in_file_gently(
file, key, value, NULL, NULL, 0);
free(file);
return ret;
}
return repo_config_set_multivar_gently(r, key, value, NULL, 0);
}
void git_config_set(const char *key, const char *value)
{
git_config_set_multivar(key, value, NULL, 0);
trace2_cmd_set_config(key, value);
}
/*
* The ownership rule is that the caller will own the string
* if it receives a piece of memory different from what it passed
* as the parameter.
*/
const char *git_config_prepare_comment_string(const char *comment)
{
size_t leading_blanks;
if (!comment)
return NULL;
if (strchr(comment, '\n'))
die(_("no multi-line comment allowed: '%s'"), comment);
/*
* If it begins with one or more leading whitespace characters
* followed by '#", the comment string is used as-is.
*
* If it begins with '#', a SP is inserted between the comment
* and the value the comment is about.
*
* Otherwise, the value is followed by a SP followed by '#'
* followed by SP and then the comment string comes.
*/
leading_blanks = strspn(comment, " \t");
if (leading_blanks && comment[leading_blanks] == '#')
; /* use it as-is */
else if (comment[0] == '#')
comment = xstrfmt(" %s", comment);
else
comment = xstrfmt(" # %s", comment);
return comment;
}
static void validate_comment_string(const char *comment)
{
size_t leading_blanks;
if (!comment)
return;
/*
* The front-end must have massaged the comment string
* properly before calling us.
*/
if (strchr(comment, '\n'))
BUG("multi-line comments are not permitted: '%s'", comment);
leading_blanks = strspn(comment, " \t");
if (!leading_blanks || comment[leading_blanks] != '#')
BUG("comment must begin with one or more SP followed by '#': '%s'",
comment);
}
/*
* If value==NULL, unset in (remove from) config,
* if value_pattern!=NULL, disregard key/value pairs where value does not match.
* if value_pattern==CONFIG_REGEX_NONE, do not match any existing values
* (only add a new one)
* if flags contains the CONFIG_FLAGS_MULTI_REPLACE flag, all matching
* key/values are removed before a single new pair is written. If the
* flag is not present, then replace only the first match.
*
* Returns 0 on success.
*
* This function does this:
*
* - it locks the config file by creating ".git/config.lock"
*
* - it then parses the config using store_aux() as validator to find
* the position on the key/value pair to replace. If it is to be unset,
* it must be found exactly once.
*
* - the config file is mmap()ed and the part before the match (if any) is
* written to the lock file, then the changed part and the rest.
*
* - the config file is removed and the lock file rename()d to it.
*
*/
int git_config_set_multivar_in_file_gently(const char *config_filename,
const char *key, const char *value,
const char *value_pattern,
const char *comment,
unsigned flags)
{
int fd = -1, in_fd = -1;
int ret;
struct lock_file lock = LOCK_INIT;
char *filename_buf = NULL;
char *contents = NULL;
size_t contents_sz;
struct config_store_data store = CONFIG_STORE_INIT;
validate_comment_string(comment);
/* parse-key returns negative; flip the sign to feed exit(3) */
ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
if (ret)
goto out_free;
store.multi_replace = (flags & CONFIG_FLAGS_MULTI_REPLACE) != 0;
if (!config_filename)
config_filename = filename_buf = git_pathdup("config");
/*
* The lock serves a purpose in addition to locking: the new
* contents of .git/config will be written into it.
*/
fd = hold_lock_file_for_update(&lock, config_filename, 0);
if (fd < 0) {
error_errno(_("could not lock config file %s"), config_filename);
ret = CONFIG_NO_LOCK;
goto out_free;
}
/*
* If .git/config does not exist yet, write a minimal version.
*/
in_fd = open(config_filename, O_RDONLY);
if ( in_fd < 0 ) {
if ( ENOENT != errno ) {
error_errno(_("opening %s"), config_filename);
ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
goto out_free;
}
/* if nothing to unset, error out */
if (!value) {
ret = CONFIG_NOTHING_SET;
goto out_free;
}
free(store.key);
store.key = xstrdup(key);
if (write_section(fd, key, &store) < 0 ||
write_pair(fd, key, value, comment, &store) < 0)
goto write_err_out;
} else {
struct stat st;
size_t copy_begin, copy_end;
int i, new_line = 0;
struct config_options opts;
if (!value_pattern)
store.value_pattern = NULL;
else if (value_pattern == CONFIG_REGEX_NONE)
store.value_pattern = CONFIG_REGEX_NONE;
else if (flags & CONFIG_FLAGS_FIXED_VALUE)
store.fixed_value = value_pattern;
else {
if (value_pattern[0] == '!') {
store.do_not_match = 1;
value_pattern++;
} else
store.do_not_match = 0;
store.value_pattern = (regex_t*)xmalloc(sizeof(regex_t));
if (regcomp(store.value_pattern, value_pattern,
REG_EXTENDED)) {
error(_("invalid pattern: %s"), value_pattern);
FREE_AND_NULL(store.value_pattern);
ret = CONFIG_INVALID_PATTERN;
goto out_free;
}
}
ALLOC_GROW(store.parsed, 1, store.parsed_alloc);
store.parsed[0].end = 0;
memset(&opts, 0, sizeof(opts));
opts.event_fn = store_aux_event;
opts.event_fn_data = &store;
/*
* After this, store.parsed will contain offsets of all the
* parsed elements, and store.seen will contain a list of
* matches, as indices into store.parsed.
*
* As a side effect, we make sure to transform only a valid
* existing config file.
*/
if (git_config_from_file_with_options(store_aux,
config_filename,
&store, CONFIG_SCOPE_UNKNOWN,
&opts)) {
error(_("invalid config file %s"), config_filename);
ret = CONFIG_INVALID_FILE;
goto out_free;
}
/* if nothing to unset, or too many matches, error out */
if ((store.seen_nr == 0 && value == NULL) ||
(store.seen_nr > 1 && !store.multi_replace)) {
ret = CONFIG_NOTHING_SET;
goto out_free;
}
if (fstat(in_fd, &st) == -1) {
error_errno(_("fstat on %s failed"), config_filename);
ret = CONFIG_INVALID_FILE;
goto out_free;
}
contents_sz = xsize_t(st.st_size);
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_errno(_("unable to mmap '%s'%s"),
config_filename, mmap_os_err());
ret = CONFIG_INVALID_FILE;
contents = NULL;
goto out_free;
}
close(in_fd);
in_fd = -1;
if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
error_errno(_("chmod on %s failed"), get_lock_file_path(&lock));
ret = CONFIG_NO_WRITE;
goto out_free;
}
if (store.seen_nr == 0) {
if (!store.seen_alloc) {
/* Did not see key nor section */
ALLOC_GROW(store.seen, 1, store.seen_alloc);
store.seen[0] = store.parsed_nr
- !!store.parsed_nr;
}
store.seen_nr = 1;
}
for (i = 0, copy_begin = 0; i < store.seen_nr; i++) {
size_t replace_end;
int j = store.seen[i];
new_line = 0;
if (!store.key_seen) {
copy_end = store.parsed[j].end;
/* include '\n' when copying section header */
if (copy_end > 0 && copy_end < contents_sz &&
contents[copy_end - 1] != '\n' &&
contents[copy_end] == '\n')
copy_end++;
replace_end = copy_end;
} else {
replace_end = store.parsed[j].end;
copy_end = store.parsed[j].begin;
if (!value)
maybe_remove_section(&store,
&copy_end,
&replace_end, &i);
/*
* Swallow preceding white-space on the same
* line.
*/
while (copy_end > 0 ) {
char c = contents[copy_end - 1];
if (isspace(c) && c != '\n')
copy_end--;
else
break;
}
}
if (copy_end > 0 && contents[copy_end-1] != '\n')
new_line = 1;
/* write the first part of the config */
if (copy_end > copy_begin) {
if (write_in_full(fd, contents + copy_begin,
copy_end - copy_begin) < 0)
goto write_err_out;
if (new_line &&
write_str_in_full(fd, "\n") < 0)
goto write_err_out;
}
copy_begin = replace_end;
}
/* write the pair (value == NULL means unset) */
if (value) {
if (!store.section_seen) {
if (write_section(fd, key, &store) < 0)
goto write_err_out;
}
if (write_pair(fd, key, value, comment, &store) < 0)
goto write_err_out;
}
/* write the rest of the config */
if (copy_begin < contents_sz)
if (write_in_full(fd, contents + copy_begin,
contents_sz - copy_begin) < 0)
goto write_err_out;
munmap(contents, contents_sz);
contents = NULL;
}
if (commit_lock_file(&lock) < 0) {
error_errno(_("could not write config file %s"), config_filename);
ret = CONFIG_NO_WRITE;
goto out_free;
}
ret = 0;
/* Invalidate the config cache */
git_config_clear();
out_free:
rollback_lock_file(&lock);
free(filename_buf);
if (contents)
munmap(contents, contents_sz);
if (in_fd >= 0)
close(in_fd);
config_store_data_clear(&store);
return ret;
write_err_out:
ret = write_error(get_lock_file_path(&lock));
goto out_free;
}
void git_config_set_multivar_in_file(const char *config_filename,
const char *key, const char *value,
const char *value_pattern, unsigned flags)
{
if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
value_pattern, NULL, flags))
return;
if (value)
die(_("could not set '%s' to '%s'"), key, value);
else
die(_("could not unset '%s'"), key);
}
int git_config_set_multivar_gently(const char *key, const char *value,
const char *value_pattern, unsigned flags)
{
return repo_config_set_multivar_gently(the_repository, key, value,
value_pattern, flags);
}
int repo_config_set_multivar_gently(struct repository *r, const char *key,
const char *value,
const char *value_pattern, unsigned flags)
{
char *file = repo_git_path(r, "config");
int res = git_config_set_multivar_in_file_gently(file,
key, value,
value_pattern,
NULL, flags);
free(file);
return res;
}
void git_config_set_multivar(const char *key, const char *value,
const char *value_pattern, unsigned flags)
{
git_config_set_multivar_in_file(git_path("config"),
key, value, value_pattern,
flags);
}
static size_t section_name_match (const char *buf, const char *name)
{
size_t i = 0, j = 0;
int dot = 0;
if (buf[i] != '[')
return 0;
for (i = 1; buf[i] && buf[i] != ']'; i++) {
if (!dot && isspace(buf[i])) {
dot = 1;
if (name[j++] != '.')
break;
for (i++; isspace(buf[i]); i++)
; /* do nothing */
if (buf[i] != '"')
break;
continue;
}
if (buf[i] == '\\' && dot)
i++;
else if (buf[i] == '"' && dot) {
for (i++; isspace(buf[i]); i++)
; /* do_nothing */
break;
}
if (buf[i] != name[j++])
break;
}
if (buf[i] == ']' && name[j] == 0) {
/*
* We match, now just find the right length offset by
* gobbling up any whitespace after it, as well
*/
i++;
for (; buf[i] && isspace(buf[i]); i++)
; /* do nothing */
return i;
}
return 0;
}
static int section_name_is_ok(const char *name)
{
/* Empty section names are bogus. */
if (!*name)
return 0;
/*
* Before a dot, we must be alphanumeric or dash. After the first dot,
* anything goes, so we can stop checking.
*/
for (; *name && *name != '.'; name++)
if (*name != '-' && !isalnum(*name))
return 0;
return 1;
}
#define GIT_CONFIG_MAX_LINE_LEN (512 * 1024)
/* if new_name == NULL, the section is removed instead */
static int git_config_copy_or_rename_section_in_file(const char *config_filename,
const char *old_name,
const char *new_name, int copy)
{
int ret = 0, remove = 0;
char *filename_buf = NULL;
struct lock_file lock = LOCK_INIT;
int out_fd;
struct strbuf buf = STRBUF_INIT;
FILE *config_file = NULL;
struct stat st;
struct strbuf copystr = STRBUF_INIT;
struct config_store_data store;
uint32_t line_nr = 0;
memset(&store, 0, sizeof(store));
if (new_name && !section_name_is_ok(new_name)) {
ret = error(_("invalid section name: %s"), new_name);
goto out_no_rollback;
}
if (!config_filename)
config_filename = filename_buf = git_pathdup("config");
out_fd = hold_lock_file_for_update(&lock, config_filename, 0);
if (out_fd < 0) {
ret = error(_("could not lock config file %s"), config_filename);
goto out;
}
if (!(config_file = fopen(config_filename, "rb"))) {
ret = warn_on_fopen_errors(config_filename);
if (ret)
goto out;
/* no config file means nothing to rename, no error */
goto commit_and_out;
}
if (fstat(fileno(config_file), &st) == -1) {
ret = error_errno(_("fstat on %s failed"), config_filename);
goto out;
}
if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
ret = error_errno(_("chmod on %s failed"),
get_lock_file_path(&lock));
goto out;
}
while (!strbuf_getwholeline(&buf, config_file, '\n')) {
size_t i, length;
int is_section = 0;
char *output = buf.buf;
line_nr++;
if (buf.len >= GIT_CONFIG_MAX_LINE_LEN) {
ret = error(_("refusing to work with overly long line "
"in '%s' on line %"PRIuMAX),
config_filename, (uintmax_t)line_nr);
goto out;
}
for (i = 0; buf.buf[i] && isspace(buf.buf[i]); i++)
; /* do nothing */
if (buf.buf[i] == '[') {
/* it's a section */
size_t offset;
is_section = 1;
/*
* When encountering a new section under -c we
* need to flush out any section we're already
* coping and begin anew. There might be
* multiple [branch "$name"] sections.
*/
if (copystr.len > 0) {
if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
ret = write_error(get_lock_file_path(&lock));
goto out;
}
strbuf_reset(&copystr);
}
offset = section_name_match(&buf.buf[i], old_name);
if (offset > 0) {
ret++;
if (!new_name) {
remove = 1;
continue;
}
store.baselen = strlen(new_name);
if (!copy) {
if (write_section(out_fd, new_name, &store) < 0) {
ret = write_error(get_lock_file_path(&lock));
goto out;
}
/*
* We wrote out the new section, with
* a newline, now skip the old
* section's length
*/
output += offset + i;
if (strlen(output) > 0) {
/*
* More content means there's
* a declaration to put on the
* next line; indent with a
* tab
*/
output -= 1;
output[0] = '\t';
}
} else {
strbuf_release(&copystr);
copystr = store_create_section(new_name, &store);
}
}
remove = 0;
}
if (remove)
continue;
length = strlen(output);
if (!is_section && copystr.len > 0) {
strbuf_add(&copystr, output, length);
}
if (write_in_full(out_fd, output, length) < 0) {
ret = write_error(get_lock_file_path(&lock));
goto out;
}
}
/*
* Copy a trailing section at the end of the config, won't be
* flushed by the usual "flush because we have a new section
* logic in the loop above.
*/
if (copystr.len > 0) {
if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
ret = write_error(get_lock_file_path(&lock));
goto out;
}
strbuf_reset(&copystr);
}
fclose(config_file);
config_file = NULL;
commit_and_out:
if (commit_lock_file(&lock) < 0)
ret = error_errno(_("could not write config file %s"),
config_filename);
out:
if (config_file)
fclose(config_file);
rollback_lock_file(&lock);
out_no_rollback:
free(filename_buf);
config_store_data_clear(&store);
strbuf_release(&buf);
strbuf_release(&copystr);
return ret;
}
int git_config_rename_section_in_file(const char *config_filename,
const char *old_name, const char *new_name)
{
return git_config_copy_or_rename_section_in_file(config_filename,
old_name, new_name, 0);
}
int git_config_rename_section(const char *old_name, const char *new_name)
{
return git_config_rename_section_in_file(NULL, old_name, new_name);
}
int git_config_copy_section_in_file(const char *config_filename,
const char *old_name, const char *new_name)
{
return git_config_copy_or_rename_section_in_file(config_filename,
old_name, new_name, 1);
}
int git_config_copy_section(const char *old_name, const char *new_name)
{
return git_config_copy_section_in_file(NULL, old_name, new_name);
}
/*
* Call this to report error for your variable that should not
* get a boolean value (i.e. "[my] var" means "true").
*/
#undef config_error_nonbool
int config_error_nonbool(const char *var)
{
return error(_("missing value for '%s'"), var);
}
int parse_config_key(const char *var,
const char *section,
const char **subsection, size_t *subsection_len,
const char **key)
{
const char *dot;
/* Does it start with "section." ? */
if (!skip_prefix(var, section, &var) || *var != '.')
return -1;
/*
* Find the key; we don't know yet if we have a subsection, but we must
* parse backwards from the end, since the subsection may have dots in
* it, too.
*/
dot = strrchr(var, '.');
*key = dot + 1;
/* Did we have a subsection at all? */
if (dot == var) {
if (subsection) {
*subsection = NULL;
*subsection_len = 0;
}
}
else {
if (!subsection)
return -1;
*subsection = var + 1;
*subsection_len = dot - *subsection;
}
return 0;
}
const char *config_origin_type_name(enum config_origin_type type)
{
switch (type) {
case CONFIG_ORIGIN_BLOB:
return "blob";
case CONFIG_ORIGIN_FILE:
return "file";
case CONFIG_ORIGIN_STDIN:
return "standard input";
case CONFIG_ORIGIN_SUBMODULE_BLOB:
return "submodule-blob";
case CONFIG_ORIGIN_CMDLINE:
return "command line";
default:
BUG("unknown config origin type");
}
}
const char *config_scope_name(enum config_scope scope)
{
switch (scope) {
case CONFIG_SCOPE_SYSTEM:
return "system";
case CONFIG_SCOPE_GLOBAL:
return "global";
case CONFIG_SCOPE_LOCAL:
return "local";
case CONFIG_SCOPE_WORKTREE:
return "worktree";
case CONFIG_SCOPE_COMMAND:
return "command";
case CONFIG_SCOPE_SUBMODULE:
return "submodule";
default:
return "unknown";
}
}
int lookup_config(const char **mapping, int nr_mapping, const char *var)
{
int i;
for (i = 0; i < nr_mapping; i++) {
const char *name = mapping[i];
if (name && !strcasecmp(var, name))
return i;
}
return -1;
}