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-rw-r--r--config.c3043
1 files changed, 3043 insertions, 0 deletions
diff --git a/config.c b/config.c
new file mode 100644
index 0000000000..b0c20e6cb8
--- /dev/null
+++ b/config.c
@@ -0,0 +1,3043 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ * Copyright (C) Johannes Schindelin, 2005
+ *
+ */
+#include "cache.h"
+#include "config.h"
+#include "repository.h"
+#include "lockfile.h"
+#include "exec_cmd.h"
+#include "strbuf.h"
+#include "quote.h"
+#include "hashmap.h"
+#include "string-list.h"
+#include "utf8.h"
+#include "dir.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;
+ int die_on_error;
+ int linenr;
+ int eof;
+ struct strbuf value;
+ struct strbuf var;
+
+ int (*do_fgetc)(struct config_source *c);
+ int (*do_ungetc)(int c, struct config_source *conf);
+ long (*do_ftell)(struct config_source *c);
+};
+
+/*
+ * These variables record the "current" config source, which
+ * can be accessed by parsing callbacks.
+ *
+ * The "cf" variable will be non-NULL only when we are actually parsing a real
+ * config source (file, blob, cmdline, etc).
+ *
+ * The "current_config_kvi" variable will be non-NULL only when we are feeding
+ * cached config from a configset into a callback.
+ *
+ * They should generally never be non-NULL at the same time. If they are both
+ * NULL, then we aren't parsing anything (and depending on the function looking
+ * at the variables, it's either a bug for it to be called in the first place,
+ * or it's a function which can be reused for non-config purposes, and should
+ * fall back to some sane behavior).
+ */
+static struct config_source *cf;
+static struct key_value_info *current_config_kvi;
+
+/*
+ * Similar to the variables above, this gives access to the "scope" of the
+ * current value (repo, global, etc). For cached values, it can be found via
+ * the current_config_kvi as above. During parsing, the current value can be
+ * found in this variable. It's not part of "cf" because it transcends a single
+ * file (i.e., a file included from .git/config is still in "repo" scope).
+ */
+static enum config_scope current_parsing_scope;
+
+static int core_compression_seen;
+static int pack_compression_seen;
+static int zlib_compression_seen;
+
+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)
+ die("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;
+}
+
+#define MAX_INCLUDE_DEPTH 10
+static const char include_depth_advice[] =
+"exceeded maximum include depth (%d) while including\n"
+" %s\n"
+"from\n"
+" %s\n"
+"Do you have circular includes?";
+static int handle_path_include(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 = expand_user_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 (!cf || !cf->path)
+ return error("relative config includes must come from files");
+
+ slash = find_last_dir_sep(cf->path);
+ if (slash)
+ strbuf_add(&buf, cf->path, slash - cf->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,
+ !cf ? "<unknown>" :
+ cf->name ? cf->name :
+ "the command line");
+ ret = git_config_from_file(git_config_include, path, inc);
+ inc->depth--;
+ }
+ strbuf_release(&buf);
+ free(expanded);
+ return ret;
+}
+
+static int prepare_include_condition_pattern(struct strbuf *pat)
+{
+ struct strbuf path = STRBUF_INIT;
+ char *expanded;
+ int prefix = 0;
+
+ expanded = expand_user_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 (!cf || !cf->path)
+ return error(_("relative config include "
+ "conditionals must come from files"));
+
+ strbuf_realpath(&path, cf->path, 1);
+ slash = find_last_dir_sep(path.buf);
+ if (!slash)
+ die("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_insert(pat, 0, "**/", 3);
+
+ if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
+ strbuf_addstr(pat, "**");
+
+ strbuf_release(&path);
+ return prefix;
+}
+
+static int include_by_gitdir(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(&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,
+ 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_condition_is_true(const struct config_options *opts,
+ const char *cond, size_t cond_len)
+{
+
+ if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
+ return include_by_gitdir(opts, cond, cond_len, 0);
+ else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
+ return include_by_gitdir(opts, cond, cond_len, 1);
+
+ /* unknown conditionals are always false */
+ return 0;
+}
+
+int git_config_include(const char *var, const char *value, void *data)
+{
+ struct config_include_data *inc = data;
+ const char *cond, *key;
+ int 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, inc->data);
+ if (ret < 0)
+ return ret;
+
+ if (!strcmp(var, "include.path"))
+ ret = handle_path_include(value, inc);
+
+ if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
+ (cond && include_condition_is_true(inc->opts, cond, cond_len)) &&
+ !strcmp(key, "path"))
+ ret = handle_path_include(value, inc);
+
+ return ret;
+}
+
+void git_config_push_parameter(const char *text)
+{
+ 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, text);
+ setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
+ strbuf_release(&env);
+}
+
+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 int which will hold the length of the
+ * section + subsection part, can be NULL
+ */
+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, '.');
+
+ /*
+ * 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) {
+ if (!quiet)
+ error("key does not contain a section: %s", key);
+ return -CONFIG_NO_SECTION_OR_NAME;
+ }
+
+ if (!last_dot[1]) {
+ if (!quiet)
+ 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.
+ */
+ if (store_key)
+ *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))) {
+ if (!quiet)
+ error("invalid key: %s", key);
+ goto out_free_ret_1;
+ }
+ c = tolower(c);
+ } else if (c == '\n') {
+ if (!quiet)
+ error("invalid key (newline): %s", key);
+ goto out_free_ret_1;
+ }
+ if (store_key)
+ (*store_key)[i] = c;
+ }
+
+ return 0;
+
+out_free_ret_1:
+ if (store_key) {
+ FREE_AND_NULL(*store_key);
+ }
+ 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);
+}
+
+int git_config_parse_parameter(const char *text,
+ config_fn_t fn, void *data)
+{
+ const char *value;
+ char *canonical_name;
+ struct strbuf **pair;
+ int ret;
+
+ 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);
+ }
+
+ if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
+ ret = -1;
+ } else {
+ ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
+ free(canonical_name);
+ }
+ strbuf_list_free(pair);
+ return ret;
+}
+
+int git_config_from_parameters(config_fn_t fn, void *data)
+{
+ const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
+ int ret = 0;
+ char *envw;
+ const char **argv = NULL;
+ int nr = 0, alloc = 0;
+ int i;
+ struct config_source source;
+
+ if (!env)
+ return 0;
+
+ memset(&source, 0, sizeof(source));
+ source.prev = cf;
+ source.origin_type = CONFIG_ORIGIN_CMDLINE;
+ cf = &source;
+
+ /* sq_dequote will write over it */
+ envw = xstrdup(env);
+
+ if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
+ ret = error("bogus format in " CONFIG_DATA_ENVIRONMENT);
+ goto out;
+ }
+
+ for (i = 0; i < nr; i++) {
+ if (git_config_parse_parameter(argv[i], fn, data) < 0) {
+ ret = -1;
+ goto out;
+ }
+ }
+
+out:
+ free(argv);
+ free(envw);
+ cf = source.prev;
+ return ret;
+}
+
+static int get_next_char(void)
+{
+ int c = cf->do_fgetc(cf);
+
+ if (c == '\r') {
+ /* DOS like systems */
+ c = cf->do_fgetc(cf);
+ if (c != '\n') {
+ if (c != EOF)
+ cf->do_ungetc(c, cf);
+ c = '\r';
+ }
+ }
+ if (c == '\n')
+ cf->linenr++;
+ if (c == EOF) {
+ cf->eof = 1;
+ cf->linenr++;
+ c = '\n';
+ }
+ return c;
+}
+
+static char *parse_value(void)
+{
+ int quote = 0, comment = 0, space = 0;
+
+ strbuf_reset(&cf->value);
+ for (;;) {
+ int c = get_next_char();
+ if (c == '\n') {
+ if (quote) {
+ cf->linenr--;
+ return NULL;
+ }
+ return cf->value.buf;
+ }
+ if (comment)
+ continue;
+ if (isspace(c) && !quote) {
+ if (cf->value.len)
+ space++;
+ continue;
+ }
+ if (!quote) {
+ if (c == ';' || c == '#') {
+ comment = 1;
+ continue;
+ }
+ }
+ for (; space; space--)
+ strbuf_addch(&cf->value, ' ');
+ if (c == '\\') {
+ c = get_next_char();
+ 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(&cf->value, c);
+ continue;
+ }
+ if (c == '"') {
+ quote = 1-quote;
+ continue;
+ }
+ strbuf_addch(&cf->value, c);
+ }
+}
+
+static int get_value(config_fn_t fn, void *data, struct strbuf *name)
+{
+ int c;
+ char *value;
+ int ret;
+
+ /* Get the full name */
+ for (;;) {
+ c = get_next_char();
+ if (cf->eof)
+ break;
+ if (!iskeychar(c))
+ break;
+ strbuf_addch(name, tolower(c));
+ }
+
+ while (c == ' ' || c == '\t')
+ c = get_next_char();
+
+ value = NULL;
+ if (c != '\n') {
+ if (c != '=')
+ return -1;
+ value = parse_value();
+ 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.
+ */
+ cf->linenr--;
+ ret = fn(name->buf, value, data);
+ if (ret >= 0)
+ cf->linenr++;
+ return ret;
+}
+
+static int get_extended_base_var(struct strbuf *name, int c)
+{
+ do {
+ if (c == '\n')
+ goto error_incomplete_line;
+ c = get_next_char();
+ } while (isspace(c));
+
+ /* We require the format to be '[base "extension"]' */
+ if (c != '"')
+ return -1;
+ strbuf_addch(name, '.');
+
+ for (;;) {
+ int c = get_next_char();
+ if (c == '\n')
+ goto error_incomplete_line;
+ if (c == '"')
+ break;
+ if (c == '\\') {
+ c = get_next_char();
+ if (c == '\n')
+ goto error_incomplete_line;
+ }
+ strbuf_addch(name, c);
+ }
+
+ /* Final ']' */
+ if (get_next_char() != ']')
+ return -1;
+ return 0;
+error_incomplete_line:
+ cf->linenr--;
+ return -1;
+}
+
+static int get_base_var(struct strbuf *name)
+{
+ for (;;) {
+ int c = get_next_char();
+ if (cf->eof)
+ return -1;
+ if (c == ']')
+ return 0;
+ if (isspace(c))
+ return get_extended_base_var(name, c);
+ if (!iskeychar(c) && c != '.')
+ return -1;
+ strbuf_addch(name, tolower(c));
+ }
+}
+
+static int git_parse_source(config_fn_t fn, void *data)
+{
+ int comment = 0;
+ int baselen = 0;
+ struct strbuf *var = &cf->var;
+ int error_return = 0;
+ char *error_msg = NULL;
+
+ /* U+FEFF Byte Order Mark in UTF8 */
+ const char *bomptr = utf8_bom;
+
+ for (;;) {
+ int c = get_next_char();
+ 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 (cf->eof)
+ return 0;
+ comment = 0;
+ continue;
+ }
+ if (comment || isspace(c))
+ continue;
+ if (c == '#' || c == ';') {
+ comment = 1;
+ continue;
+ }
+ if (c == '[') {
+ /* Reset prior to determining a new stem */
+ strbuf_reset(var);
+ if (get_base_var(var) < 0 || var->len < 1)
+ break;
+ strbuf_addch(var, '.');
+ baselen = var->len;
+ continue;
+ }
+ if (!isalpha(c))
+ break;
+ /*
+ * 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(fn, data, var) < 0)
+ break;
+ }
+
+ switch (cf->origin_type) {
+ case CONFIG_ORIGIN_BLOB:
+ error_msg = xstrfmt(_("bad config line %d in blob %s"),
+ cf->linenr, cf->name);
+ break;
+ case CONFIG_ORIGIN_FILE:
+ error_msg = xstrfmt(_("bad config line %d in file %s"),
+ cf->linenr, cf->name);
+ break;
+ case CONFIG_ORIGIN_STDIN:
+ error_msg = xstrfmt(_("bad config line %d in standard input"),
+ cf->linenr);
+ break;
+ case CONFIG_ORIGIN_SUBMODULE_BLOB:
+ error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
+ cf->linenr, cf->name);
+ break;
+ case CONFIG_ORIGIN_CMDLINE:
+ error_msg = xstrfmt(_("bad config line %d in command line %s"),
+ cf->linenr, cf->name);
+ break;
+ default:
+ error_msg = xstrfmt(_("bad config line %d in %s"),
+ cf->linenr, cf->name);
+ }
+
+ if (cf->die_on_error)
+ die("%s", error_msg);
+ else
+ error_return = error("%s", error_msg);
+
+ free(error_msg);
+ return error_return;
+}
+
+static int parse_unit_factor(const char *end, uintmax_t *val)
+{
+ if (!*end)
+ return 1;
+ else if (!strcasecmp(end, "k")) {
+ *val *= 1024;
+ return 1;
+ }
+ else if (!strcasecmp(end, "m")) {
+ *val *= 1024 * 1024;
+ return 1;
+ }
+ else if (!strcasecmp(end, "g")) {
+ *val *= 1024 * 1024 * 1024;
+ return 1;
+ }
+ return 0;
+}
+
+static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
+{
+ if (value && *value) {
+ char *end;
+ intmax_t val;
+ uintmax_t uval;
+ uintmax_t factor = 1;
+
+ errno = 0;
+ val = strtoimax(value, &end, 0);
+ if (errno == ERANGE)
+ return 0;
+ if (!parse_unit_factor(end, &factor)) {
+ errno = EINVAL;
+ return 0;
+ }
+ uval = labs(val);
+ uval *= factor;
+ if (uval > max || labs(val) > uval) {
+ errno = ERANGE;
+ return 0;
+ }
+ val *= factor;
+ *ret = val;
+ return 1;
+ }
+ errno = EINVAL;
+ return 0;
+}
+
+static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
+{
+ if (value && *value) {
+ char *end;
+ uintmax_t val;
+ uintmax_t oldval;
+
+ errno = 0;
+ val = strtoumax(value, &end, 0);
+ if (errno == ERANGE)
+ return 0;
+ oldval = val;
+ if (!parse_unit_factor(end, &val)) {
+ errno = EINVAL;
+ return 0;
+ }
+ if (val > max || oldval > val) {
+ errno = ERANGE;
+ return 0;
+ }
+ *ret = val;
+ return 1;
+ }
+ errno = EINVAL;
+ return 0;
+}
+
+static int git_parse_int(const char *value, int *ret)
+{
+ intmax_t tmp;
+ if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
+ return 0;
+ *ret = tmp;
+ return 1;
+}
+
+static int git_parse_int64(const char *value, int64_t *ret)
+{
+ intmax_t tmp;
+ if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
+ return 0;
+ *ret = tmp;
+ return 1;
+}
+
+int git_parse_ulong(const char *value, unsigned long *ret)
+{
+ uintmax_t tmp;
+ if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
+ return 0;
+ *ret = tmp;
+ return 1;
+}
+
+static int git_parse_ssize_t(const char *value, ssize_t *ret)
+{
+ intmax_t tmp;
+ if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
+ return 0;
+ *ret = tmp;
+ return 1;
+}
+
+NORETURN
+static void die_bad_number(const char *name, const char *value)
+{
+ const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
+
+ if (!value)
+ value = "";
+
+ if (!(cf && cf->name))
+ die(_("bad numeric config value '%s' for '%s': %s"),
+ value, name, error_type);
+
+ switch (cf->origin_type) {
+ case CONFIG_ORIGIN_BLOB:
+ die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
+ value, name, cf->name, error_type);
+ case CONFIG_ORIGIN_FILE:
+ die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
+ value, name, cf->name, 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, cf->name, error_type);
+ case CONFIG_ORIGIN_CMDLINE:
+ die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
+ value, name, cf->name, error_type);
+ default:
+ die(_("bad numeric config value '%s' for '%s' in %s: %s"),
+ value, name, cf->name, error_type);
+ }
+}
+
+int git_config_int(const char *name, const char *value)
+{
+ int ret;
+ if (!git_parse_int(value, &ret))
+ die_bad_number(name, value);
+ return ret;
+}
+
+int64_t git_config_int64(const char *name, const char *value)
+{
+ int64_t ret;
+ if (!git_parse_int64(value, &ret))
+ die_bad_number(name, value);
+ return ret;
+}
+
+unsigned long git_config_ulong(const char *name, const char *value)
+{
+ unsigned long ret;
+ if (!git_parse_ulong(value, &ret))
+ die_bad_number(name, value);
+ return ret;
+}
+
+ssize_t git_config_ssize_t(const char *name, const char *value)
+{
+ ssize_t ret;
+ if (!git_parse_ssize_t(value, &ret))
+ die_bad_number(name, value);
+ return ret;
+}
+
+static int git_parse_maybe_bool_text(const char *value)
+{
+ if (!value)
+ return 1;
+ if (!*value)
+ return 0;
+ if (!strcasecmp(value, "true")
+ || !strcasecmp(value, "yes")
+ || !strcasecmp(value, "on"))
+ return 1;
+ if (!strcasecmp(value, "false")
+ || !strcasecmp(value, "no")
+ || !strcasecmp(value, "off"))
+ return 0;
+ return -1;
+}
+
+int git_parse_maybe_bool(const char *value)
+{
+ int v = git_parse_maybe_bool_text(value);
+ if (0 <= v)
+ return v;
+ if (git_parse_int(value, &v))
+ return !!v;
+ return -1;
+}
+
+int git_config_bool_or_int(const char *name, const char *value, 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);
+}
+
+int git_config_bool(const char *name, const char *value)
+{
+ int discard;
+ return !!git_config_bool_or_int(name, value, &discard);
+}
+
+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 = expand_user_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;
+}
+
+static int git_default_core_config(const char *var, const char *value)
+{
+ /* 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 (!strcasecmp(value, "default"))
+ check_stat = 1;
+ else if (!strcasecmp(value, "minimal"))
+ check_stat = 0;
+ }
+
+ 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 {
+ int abbrev = git_config_int(var, value);
+ if (abbrev < minimum_abbrev || abbrev > 40)
+ 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);
+ 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);
+ if (level == -1)
+ level = Z_DEFAULT_COMPRESSION;
+ else if (level < 0 || level > Z_BEST_COMPRESSION)
+ die(_("bad zlib compression level %d"), level);
+ core_compression_level = level;
+ core_compression_seen = 1;
+ 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);
+
+ /* 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);
+ return 0;
+ }
+
+ if (!strcmp(var, "core.packedgitlimit")) {
+ packed_git_limit = git_config_ulong(var, value);
+ return 0;
+ }
+
+ if (!strcmp(var, "core.deltabasecachelimit")) {
+ delta_base_cache_limit = git_config_ulong(var, value);
+ 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 : CONV_EOL_RNDTRP_WARN;
+ 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.notesref")) {
+ 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")) {
+ if (!value)
+ return config_error_nonbool(var);
+ else if (!strcasecmp(value, "auto"))
+ auto_comment_line_char = 1;
+ else if (value[0] && !value[1]) {
+ comment_line_char = value[0];
+ auto_comment_line_char = 0;
+ } else
+ return error("core.commentChar should only be one character");
+ return 0;
+ }
+
+ if (!strcmp(var, "core.askpass"))
+ return git_config_string(&askpass_program, var, value);
+
+ if (!strcmp(var, "core.excludesfile"))
+ 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.fsyncobjectfiles")) {
+ 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 (!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.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.hidedotfiles")) {
+ if (value && !strcasecmp(value, "dotgitonly"))
+ hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
+ else
+ hide_dotfiles = git_config_bool(var, value);
+ return 0;
+ }
+
+ if (!strcmp(var, "core.partialclonefilter")) {
+ return git_config_string(&core_partial_clone_filter_default,
+ var, value);
+ }
+
+ /* Add other config variables here and to Documentation/config.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 && !strcasecmp(value, "always")) {
+ git_branch_track = BRANCH_TRACK_ALWAYS;
+ 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;
+}
+
+int git_default_config(const char *var, const char *value, void *dummy)
+{
+ if (starts_with(var, "core."))
+ return git_default_core_config(var, value);
+
+ if (starts_with(var, "user."))
+ return git_ident_config(var, value, dummy);
+
+ 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, "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);
+ return 0;
+ }
+
+ if (!strcmp(var, "pack.compression")) {
+ int level = git_config_int(var, value);
+ 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;
+ }
+
+ /* 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)
+{
+ int ret;
+
+ /* push config-file parsing state stack */
+ top->prev = cf;
+ top->linenr = 1;
+ top->eof = 0;
+ strbuf_init(&top->value, 1024);
+ strbuf_init(&top->var, 1024);
+ cf = top;
+
+ ret = git_parse_source(fn, data);
+
+ /* pop config-file parsing state stack */
+ strbuf_release(&top->value);
+ strbuf_release(&top->var);
+ cf = top->prev;
+
+ 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)
+{
+ struct config_source top;
+
+ top.u.file = f;
+ top.origin_type = origin_type;
+ top.name = name;
+ top.path = path;
+ top.die_on_error = 1;
+ top.do_fgetc = config_file_fgetc;
+ top.do_ungetc = config_file_ungetc;
+ top.do_ftell = config_file_ftell;
+
+ return do_config_from(&top, fn, data);
+}
+
+static int git_config_from_stdin(config_fn_t fn, void *data)
+{
+ return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin, data);
+}
+
+int git_config_from_file(config_fn_t fn, const char *filename, void *data)
+{
+ int ret = -1;
+ FILE *f;
+
+ f = fopen_or_warn(filename, "r");
+ if (f) {
+ flockfile(f);
+ ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename, filename, f, data);
+ funlockfile(f);
+ fclose(f);
+ }
+ return ret;
+}
+
+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)
+{
+ struct config_source top;
+
+ 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.die_on_error = 0;
+ 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);
+}
+
+int git_config_from_blob_oid(config_fn_t fn,
+ const char *name,
+ const struct object_id *oid,
+ void *data)
+{
+ enum object_type type;
+ char *buf;
+ unsigned long size;
+ int ret;
+
+ buf = read_sha1_file(oid->hash, &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);
+ free(buf);
+
+ return ret;
+}
+
+static int git_config_from_blob_ref(config_fn_t fn,
+ const char *name,
+ void *data)
+{
+ struct object_id oid;
+
+ if (get_oid(name, &oid) < 0)
+ return error("unable to resolve config blob '%s'", name);
+ return git_config_from_blob_oid(fn, name, &oid, data);
+}
+
+const char *git_etc_gitconfig(void)
+{
+ static const char *system_wide;
+ if (!system_wide)
+ system_wide = system_path(ETC_GITCONFIG);
+ 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);
+}
+
+static int do_git_config_sequence(const struct config_options *opts,
+ config_fn_t fn, void *data)
+{
+ int ret = 0;
+ char *xdg_config = xdg_config_home("config");
+ char *user_config = expand_user_path("~/.gitconfig", 0);
+ char *repo_config;
+
+ if (opts->commondir)
+ repo_config = mkpathdup("%s/config", opts->commondir);
+ else
+ repo_config = NULL;
+
+ current_parsing_scope = CONFIG_SCOPE_SYSTEM;
+ if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
+ ret += git_config_from_file(fn, git_etc_gitconfig(),
+ data);
+
+ current_parsing_scope = CONFIG_SCOPE_GLOBAL;
+ if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
+ ret += git_config_from_file(fn, xdg_config, data);
+
+ if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
+ ret += git_config_from_file(fn, user_config, data);
+
+ current_parsing_scope = CONFIG_SCOPE_REPO;
+ if (repo_config && !access_or_die(repo_config, R_OK, 0))
+ ret += git_config_from_file(fn, repo_config, data);
+
+ current_parsing_scope = CONFIG_SCOPE_CMDLINE;
+ if (git_config_from_parameters(fn, data) < 0)
+ die(_("unable to parse command-line config"));
+
+ current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
+ free(xdg_config);
+ free(user_config);
+ free(repo_config);
+ return ret;
+}
+
+int config_with_options(config_fn_t fn, void *data,
+ struct git_config_source *config_source,
+ const struct config_options *opts)
+{
+ struct config_include_data inc = CONFIG_INCLUDE_INIT;
+
+ if (opts->respect_includes) {
+ inc.fn = fn;
+ inc.data = data;
+ inc.opts = opts;
+ 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)
+ return git_config_from_stdin(fn, data);
+ else if (config_source && config_source->file)
+ return git_config_from_file(fn, config_source->file, data);
+ else if (config_source && config_source->blob)
+ return git_config_from_blob_ref(fn, config_source->blob, data);
+
+ return do_git_config_sequence(opts, fn, data);
+}
+
+static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
+{
+ int i, value_index;
+ struct string_list *values;
+ struct config_set_element *entry;
+ struct configset_list *list = &cs->list;
+
+ for (i = 0; i < list->nr; i++) {
+ entry = list->items[i].e;
+ value_index = list->items[i].value_index;
+ values = &entry->value_list;
+
+ current_config_kvi = values->items[value_index].util;
+
+ if (fn(entry->key, values->items[value_index].string, data) < 0)
+ git_die_config_linenr(entry->key,
+ current_config_kvi->filename,
+ current_config_kvi->linenr);
+
+ current_config_kvi = NULL;
+ }
+}
+
+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, &opts);
+
+ strbuf_release(&commondir);
+ strbuf_release(&gitdir);
+}
+
+static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
+{
+ struct config_set_element k;
+ struct config_set_element *found_entry;
+ char *normalized_key;
+ /*
+ * `key` may come from the user, so normalize it before using it
+ * for querying entries from the hashmap.
+ */
+ if (git_config_parse_key(key, &normalized_key, NULL))
+ return NULL;
+
+ hashmap_entry_init(&k, strhash(normalized_key));
+ k.key = normalized_key;
+ found_entry = hashmap_get(&cs->config_hash, &k, NULL);
+ free(normalized_key);
+ return found_entry;
+}
+
+static int configset_add_value(struct config_set *cs, 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));
+
+ e = configset_find_element(cs, key);
+ /*
+ * 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, strhash(key));
+ e->key = xstrdup(key);
+ string_list_init(&e->value_list, 1);
+ hashmap_add(&cs->config_hash, e);
+ }
+ 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++];
+ l_item->e = e;
+ l_item->value_index = e->value_list.nr - 1;
+
+ if (!cf)
+ die("BUG: configset_add_value has no source");
+ if (cf->name) {
+ kv_info->filename = strintern(cf->name);
+ kv_info->linenr = cf->linenr;
+ kv_info->origin_type = cf->origin_type;
+ } else {
+ /* for values read from `git_config_from_parameters()` */
+ kv_info->filename = NULL;
+ kv_info->linenr = -1;
+ kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
+ }
+ kv_info->scope = current_parsing_scope;
+ si->util = kv_info;
+
+ return 0;
+}
+
+static int config_set_element_cmp(const void *unused_cmp_data,
+ const void *entry,
+ const void *entry_or_key,
+ const void *unused_keydata)
+{
+ const struct config_set_element *e1 = entry;
+ const struct config_set_element *e2 = entry_or_key;
+
+ return strcmp(e1->key, e2->key);
+}
+
+void git_configset_init(struct config_set *cs)
+{
+ hashmap_init(&cs->config_hash, config_set_element_cmp, NULL, 0);
+ cs->hash_initialized = 1;
+ cs->list.nr = 0;
+ cs->list.alloc = 0;
+ cs->list.items = NULL;
+}
+
+void git_configset_clear(struct config_set *cs)
+{
+ struct config_set_element *entry;
+ struct hashmap_iter iter;
+ if (!cs->hash_initialized)
+ return;
+
+ hashmap_iter_init(&cs->config_hash, &iter);
+ while ((entry = hashmap_iter_next(&iter))) {
+ free(entry->key);
+ string_list_clear(&entry->value_list, 1);
+ }
+ hashmap_free(&cs->config_hash, 1);
+ cs->hash_initialized = 0;
+ free(cs->list.items);
+ cs->list.nr = 0;
+ cs->list.alloc = 0;
+ cs->list.items = NULL;
+}
+
+static int config_set_callback(const char *key, const char *value, void *cb)
+{
+ struct config_set *cs = cb;
+ configset_add_value(cs, key, value);
+ return 0;
+}
+
+int git_configset_add_file(struct config_set *cs, const char *filename)
+{
+ return git_config_from_file(config_set_callback, filename, cs);
+}
+
+int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
+{
+ const struct string_list *values = NULL;
+ /*
+ * 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.
+ */
+ values = git_configset_get_value_multi(cs, key);
+
+ if (!values)
+ return 1;
+ assert(values->nr > 0);
+ *value = values->items[values->nr - 1].string;
+ return 0;
+}
+
+const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
+{
+ struct config_set_element *e = configset_find_element(cs, key);
+ return e ? &e->value_list : NULL;
+}
+
+int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value))
+ return git_config_string(dest, key, value);
+ else
+ return 1;
+}
+
+int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
+{
+ return git_configset_get_string_const(cs, key, (const char **)dest);
+}
+
+int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_int(key, value);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_ulong(key, value);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_bool(key, value);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
+ int *is_bool, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_bool_or_int(key, value, is_bool);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_parse_maybe_bool(value);
+ if (*dest == -1)
+ return -1;
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value))
+ 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;
+
+ opts.respect_includes = 1;
+ opts.commondir = repo->commondir;
+ opts.git_dir = repo->gitdir;
+
+ if (!repo->config)
+ repo->config = xcalloc(1, sizeof(struct config_set));
+ else
+ git_configset_clear(repo->config);
+
+ git_configset_init(repo->config);
+
+ if (config_with_options(config_set_callback, repo->config, NULL, &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_value(struct repository *repo,
+ const char *key, const char **value)
+{
+ git_config_check_init(repo);
+ return git_configset_get_value(repo->config, key, value);
+}
+
+const struct string_list *repo_config_get_value_multi(struct repository *repo,
+ const char *key)
+{
+ git_config_check_init(repo);
+ return git_configset_get_value_multi(repo->config, key);
+}
+
+int repo_config_get_string_const(struct repository *repo,
+ const char *key, const char **dest)
+{
+ int ret;
+ git_config_check_init(repo);
+ ret = git_configset_get_string_const(repo->config, key, dest);
+ if (ret < 0)
+ git_die_config(key, NULL);
+ return ret;
+}
+
+int repo_config_get_string(struct repository *repo,
+ const char *key, char **dest)
+{
+ git_config_check_init(repo);
+ return repo_config_get_string_const(repo, key, (const char **)dest);
+}
+
+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;
+}
+
+/* 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_value(const char *key, const char **value)
+{
+ return repo_config_get_value(the_repository, key, value);
+}
+
+const struct string_list *git_config_get_value_multi(const char *key)
+{
+ return repo_config_get_value_multi(the_repository, key);
+}
+
+int git_config_get_string_const(const char *key, const char **dest)
+{
+ return repo_config_get_string_const(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_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);
+}
+
+/*
+ * Note: This function exists solely to maintain backward compatibility with
+ * 'fetch' and 'update_clone' storing configuration in '.gitmodules' and should
+ * NOT be used anywhere else.
+ *
+ * Runs the provided config function on the '.gitmodules' file found in the
+ * working directory.
+ */
+void config_from_gitmodules(config_fn_t fn, void *data)
+{
+ if (the_repository->worktree) {
+ char *file = repo_worktree_path(the_repository, GITMODULES_FILE);
+ git_config_from_file(fn, file, data);
+ free(file);
+ }
+}
+
+int git_config_get_expiry(const char *key, const char **output)
+{
+ int ret = git_config_get_string_const(key, 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)
+{
+ char *expiry_string;
+ intmax_t days;
+ timestamp_t when;
+
+ if (git_config_get_string(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_untracked_cache(void)
+{
+ int val = -1;
+ const char *v;
+
+ /* Hack for test programs like test-dump-untracked-cache */
+ if (ignore_untracked_cache_config)
+ return -1;
+
+ if (!git_config_get_maybe_bool("core.untrackedcache", &val))
+ return val;
+
+ if (!git_config_get_value("core.untrackedcache", &v)) {
+ if (!strcasecmp(v, "keep"))
+ return -1;
+
+ error(_("unknown core.untrackedCache value '%s'; "
+ "using 'keep' default value"), v);
+ return -1;
+ }
+
+ return -1; /* default value */
+}
+
+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_fsmonitor(void)
+{
+ if (git_config_get_pathname("core.fsmonitor", &core_fsmonitor))
+ core_fsmonitor = getenv("GIT_FSMONITOR_TEST");
+
+ if (core_fsmonitor && !*core_fsmonitor)
+ core_fsmonitor = NULL;
+
+ if (core_fsmonitor)
+ return 1;
+
+ return 0;
+}
+
+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);
+}
+
+NORETURN __attribute__((format(printf, 2, 3)))
+void git_die_config(const char *key, const char *err, ...)
+{
+ const struct string_list *values;
+ struct key_value_info *kv_info;
+
+ if (err) {
+ va_list params;
+ va_start(params, err);
+ vreportf("error: ", err, params);
+ va_end(params);
+ }
+ values = git_config_get_value_multi(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.
+ */
+
+static struct {
+ int baselen;
+ char *key;
+ int do_not_match;
+ regex_t *value_regex;
+ int multi_replace;
+ size_t *offset;
+ unsigned int offset_alloc;
+ enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
+ unsigned int seen;
+} store;
+
+static int matches(const char *key, const char *value)
+{
+ 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)
+{
+ const char *ep;
+ size_t section_len;
+
+ switch (store.state) {
+ case KEY_SEEN:
+ if (matches(key, value)) {
+ if (store.seen == 1 && store.multi_replace == 0) {
+ warning(_("%s has multiple values"), key);
+ }
+
+ ALLOC_GROW(store.offset, store.seen + 1,
+ store.offset_alloc);
+
+ store.offset[store.seen] = cf->do_ftell(cf);
+ store.seen++;
+ }
+ break;
+ case SECTION_SEEN:
+ /*
+ * What we are looking for is in store.key (both
+ * section and var), and its section part is baselen
+ * long. We found key (again, both section and var).
+ * We would want to know if this key is in the same
+ * section as what we are looking for. We already
+ * know we are in the same section as what should
+ * hold store.key.
+ */
+ ep = strrchr(key, '.');
+ section_len = ep - key;
+
+ if ((section_len != store.baselen) ||
+ memcmp(key, store.key, section_len+1)) {
+ store.state = SECTION_END_SEEN;
+ break;
+ }
+
+ /*
+ * Do not increment matches: this is no match, but we
+ * just made sure we are in the desired section.
+ */
+ ALLOC_GROW(store.offset, store.seen + 1,
+ store.offset_alloc);
+ store.offset[store.seen] = cf->do_ftell(cf);
+ /* fallthru */
+ case SECTION_END_SEEN:
+ case START:
+ if (matches(key, value)) {
+ ALLOC_GROW(store.offset, store.seen + 1,
+ store.offset_alloc);
+ store.offset[store.seen] = cf->do_ftell(cf);
+ store.state = KEY_SEEN;
+ store.seen++;
+ } else {
+ if (strrchr(key, '.') - key == store.baselen &&
+ !strncmp(key, store.key, store.baselen)) {
+ store.state = SECTION_SEEN;
+ ALLOC_GROW(store.offset,
+ store.seen + 1,
+ store.offset_alloc);
+ store.offset[store.seen] = cf->do_ftell(cf);
+ }
+ }
+ }
+ 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 char *dot;
+ int 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_addf(&sb, "[%.*s]\n", store.baselen, key);
+ }
+
+ return sb;
+}
+
+static ssize_t write_section(int fd, const char *key)
+{
+ struct strbuf sb = store_create_section(key);
+ 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)
+{
+ int i;
+ ssize_t ret;
+ int length = strlen(key + store.baselen + 1);
+ 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",
+ length, 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;
+ }
+ strbuf_addf(&sb, "%s\n", quote);
+
+ ret = write_in_full(fd, sb.buf, sb.len);
+ strbuf_release(&sb);
+
+ return ret;
+}
+
+static ssize_t find_beginning_of_line(const char *contents, size_t size,
+ size_t offset_, int *found_bracket)
+{
+ size_t equal_offset = size, bracket_offset = size;
+ ssize_t offset;
+
+contline:
+ for (offset = offset_-2; offset > 0
+ && contents[offset] != '\n'; offset--)
+ switch (contents[offset]) {
+ case '=': equal_offset = offset; break;
+ case ']': bracket_offset = offset; break;
+ }
+ if (offset > 0 && contents[offset-1] == '\\') {
+ offset_ = offset;
+ goto contline;
+ }
+ if (bracket_offset < equal_offset) {
+ *found_bracket = 1;
+ offset = bracket_offset+1;
+ } else
+ offset++;
+
+ return offset;
+}
+
+int git_config_set_in_file_gently(const char *config_filename,
+ const char *key, const char *value)
+{
+ return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 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);
+}
+
+void git_config_set(const char *key, const char *value)
+{
+ git_config_set_multivar(key, value, NULL, 0);
+}
+
+/*
+ * 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.
+ *
+ * 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_regex,
+ int multi_replace)
+{
+ 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;
+
+ /* 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 = multi_replace;
+
+ 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);
+ free(store.key);
+ 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 ) {
+ free(store.key);
+
+ 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 == NULL) {
+ ret = CONFIG_NOTHING_SET;
+ goto out_free;
+ }
+
+ store.key = (char *)key;
+ if (write_section(fd, key) < 0 ||
+ write_pair(fd, key, value) < 0)
+ goto write_err_out;
+ } else {
+ struct stat st;
+ 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;
+ value_regex++;
+ } else
+ store.do_not_match = 0;
+
+ store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
+ if (regcomp(store.value_regex, value_regex,
+ REG_EXTENDED)) {
+ error("invalid pattern: %s", value_regex);
+ free(store.value_regex);
+ ret = CONFIG_INVALID_PATTERN;
+ goto out_free;
+ }
+ }
+
+ ALLOC_GROW(store.offset, 1, store.offset_alloc);
+ store.offset[0] = 0;
+ store.state = START;
+ store.seen = 0;
+
+ /*
+ * After this, store.offset will contain the *end* offset
+ * of the last match, or remain at 0 if no match was found.
+ * As a side effect, we make sure to transform only a valid
+ * existing config file.
+ */
+ 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 &&
+ store.value_regex != CONFIG_REGEX_NONE) {
+ regfree(store.value_regex);
+ free(store.value_regex);
+ }
+ ret = CONFIG_INVALID_FILE;
+ goto out_free;
+ }
+
+ free(store.key);
+ if (store.value_regex != NULL &&
+ store.value_regex != CONFIG_REGEX_NONE) {
+ regfree(store.value_regex);
+ free(store.value_regex);
+ }
+
+ /* if nothing to unset, or too many matches, error out */
+ if ((store.seen == 0 && value == NULL) ||
+ (store.seen > 1 && multi_replace == 0)) {
+ 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'", config_filename);
+ 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 == 0)
+ store.seen = 1;
+
+ for (i = 0, copy_begin = 0; i < store.seen; i++) {
+ if (store.offset[i] == 0) {
+ store.offset[i] = copy_end = contents_sz;
+ } else if (store.state != KEY_SEEN) {
+ copy_end = store.offset[i];
+ } else
+ copy_end = find_beginning_of_line(
+ contents, contents_sz,
+ store.offset[i]-2, &new_line);
+
+ 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 = store.offset[i];
+ }
+
+ /* write the pair (value == NULL means unset) */
+ if (value != NULL) {
+ if (store.state == START) {
+ if (write_section(fd, key) < 0)
+ goto write_err_out;
+ }
+ if (write_pair(fd, key, value) < 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);
+ 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_regex, int multi_replace)
+{
+ if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
+ value_regex, multi_replace))
+ 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_regex, int multi_replace)
+{
+ return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
+ multi_replace);
+}
+
+void git_config_set_multivar(const char *key, const char *value,
+ const char *value_regex, int multi_replace)
+{
+ git_config_set_multivar_in_file(NULL, key, value, value_regex,
+ multi_replace);
+}
+
+static int section_name_match (const char *buf, const char *name)
+{
+ int i = 0, j = 0, 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;
+}
+
+/* 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;
+ char buf[1024];
+ FILE *config_file = NULL;
+ struct stat st;
+ struct strbuf copystr = STRBUF_INIT;
+
+ 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 (fgets(buf, sizeof(buf), config_file)) {
+ int i;
+ int length;
+ int is_section = 0;
+ char *output = buf;
+ for (i = 0; buf[i] && isspace(buf[i]); i++)
+ ; /* do nothing */
+ if (buf[i] == '[') {
+ /* it's a section */
+ int 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[i], old_name);
+ if (offset > 0) {
+ ret++;
+ if (new_name == NULL) {
+ remove = 1;
+ continue;
+ }
+ store.baselen = strlen(new_name);
+ if (!copy) {
+ if (write_section(out_fd, new_name) < 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 {
+ copystr = store_create_section(new_name);
+ }
+ }
+ 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);
+ 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, int *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 *current_config_origin_type(void)
+{
+ int type;
+ if (current_config_kvi)
+ type = current_config_kvi->origin_type;
+ else if(cf)
+ type = cf->origin_type;
+ else
+ die("BUG: current_config_origin_type called outside config callback");
+
+ 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:
+ die("BUG: unknown config origin type");
+ }
+}
+
+const char *current_config_name(void)
+{
+ const char *name;
+ if (current_config_kvi)
+ name = current_config_kvi->filename;
+ else if (cf)
+ name = cf->name;
+ else
+ die("BUG: current_config_name called outside config callback");
+ return name ? name : "";
+}
+
+enum config_scope current_config_scope(void)
+{
+ if (current_config_kvi)
+ return current_config_kvi->scope;
+ else
+ return current_parsing_scope;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 05:46:24 +0000