diff options
Diffstat (limited to '')
| -rw-r--r-- | config.c | 3805 |
1 files changed, 3805 insertions, 0 deletions
diff --git a/config.c b/config.c new file mode 100644 index 0000000..b330c7a --- /dev/null +++ b/config.c @@ -0,0 +1,3805 @@ +/* + * 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 "dir.h" +#include "color.h" +#include "replace-object.h" +#include "refs.h" +#include "setup.h" +#include "strvec.h" +#include "trace2.h" +#include "wildmatch.h" +#include "worktree.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, space = 0; + + strbuf_reset(&cs->value); + for (;;) { + int c = get_next_char(cs); + if (c == '\n') { + if (quote) { + cs->linenr--; + return NULL; + } + return cs->value.buf; + } + if (comment) + continue; + if (isspace(c) && !quote) { + if (cs->value.len) + space++; + continue; + } + if (!quote) { + if (c == ';' || c == '#') { + comment = 1; + continue; + } + } + for (; space; space--) + strbuf_addch(&cs->value, ' '); + 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 (!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 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")) { + check_roundtrip_encoding = xstrdup(value); + 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 ASCII 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.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 (!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; +} + +void git_global_config(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(&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); +} + +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; + 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 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; + } + 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 *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); +} + +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, 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); +} + +/* + * 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, + 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; + + /* 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, &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, + ©_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, &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, 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, + 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(©str); + } + + 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(©str); + copystr = store_create_section(new_name, &store); + } + } + remove = 0; + } + if (remove) + continue; + length = strlen(output); + + if (!is_section && copystr.len > 0) { + strbuf_add(©str, 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(©str); + } + + 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(©str); + 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; +} |