diff options
Diffstat (limited to 'third_party/git/config.c')
| -rw-r--r-- | third_party/git/config.c | 3389 |
1 files changed, 0 insertions, 3389 deletions
diff --git a/third_party/git/config.c b/third_party/git/config.c deleted file mode 100644 index 2bdff4457be7..000000000000 --- a/third_party/git/config.c +++ /dev/null @@ -1,3389 +0,0 @@ -/* - * GIT - The information manager from hell - * - * Copyright (C) Linus Torvalds, 2005 - * Copyright (C) Johannes Schindelin, 2005 - * - */ -#include "cache.h" -#include "branch.h" -#include "config.h" -#include "repository.h" -#include "lockfile.h" -#include "exec-cmd.h" -#include "strbuf.h" -#include "quote.h" -#include "hashmap.h" -#include "string-list.h" -#include "object-store.h" -#include "utf8.h" -#include "dir.h" -#include "color.h" -#include "refs.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); -}; - -/* - * These variables record the "current" config source, which - * can be accessed by parsing callbacks. - * - * The "cf" variable will be non-NULL only when we are actually parsing a real - * config source (file, blob, cmdline, etc). - * - * The "current_config_kvi" variable will be non-NULL only when we are feeding - * cached config from a configset into a callback. - * - * They should generally never be non-NULL at the same time. If they are both - * NULL, then we aren't parsing anything (and depending on the function looking - * at the variables, it's either a bug for it to be called in the first place, - * or it's a function which can be reused for non-config purposes, and should - * fall back to some sane behavior). - */ -static struct config_source *cf; -static struct key_value_info *current_config_kvi; - -/* - * Similar to the variables above, this gives access to the "scope" of the - * current value (repo, global, etc). For cached values, it can be found via - * the current_config_kvi as above. During parsing, the current value can be - * found in this variable. It's not part of "cf" because it transcends a single - * file (i.e., a file included from .git/config is still in "repo" scope). - */ -static enum config_scope current_parsing_scope; - -static int core_compression_seen; -static int pack_compression_seen; -static int zlib_compression_seen; - -static int config_file_fgetc(struct config_source *conf) -{ - return getc_unlocked(conf->u.file); -} - -static int config_file_ungetc(int c, struct config_source *conf) -{ - return ungetc(c, conf->u.file); -} - -static long config_file_ftell(struct config_source *conf) -{ - return ftell(conf->u.file); -} - - -static int config_buf_fgetc(struct config_source *conf) -{ - if (conf->u.buf.pos < conf->u.buf.len) - return conf->u.buf.buf[conf->u.buf.pos++]; - - return EOF; -} - -static int config_buf_ungetc(int c, struct config_source *conf) -{ - if (conf->u.buf.pos > 0) { - conf->u.buf.pos--; - if (conf->u.buf.buf[conf->u.buf.pos] != c) - BUG("config_buf can only ungetc the same character"); - return c; - } - - return EOF; -} - -static long config_buf_ftell(struct config_source *conf) -{ - return conf->u.buf.pos; -} - -#define MAX_INCLUDE_DEPTH 10 -static const char include_depth_advice[] = 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 char *path, struct config_include_data *inc) -{ - int ret = 0; - struct strbuf buf = STRBUF_INIT; - char *expanded; - - if (!path) - return config_error_nonbool("include.path"); - - expanded = expand_user_path(path, 0); - if (!expanded) - return error(_("could not expand include path '%s'"), path); - path = expanded; - - /* - * Use an absolute path as-is, but interpret relative paths - * based on the including config file. - */ - if (!is_absolute_path(path)) { - char *slash; - - if (!cf || !cf->path) - return error(_("relative config includes must come from files")); - - slash = find_last_dir_sep(cf->path); - if (slash) - strbuf_add(&buf, cf->path, slash - cf->path + 1); - strbuf_addstr(&buf, path); - path = buf.buf; - } - - if (!access_or_die(path, R_OK, 0)) { - if (++inc->depth > MAX_INCLUDE_DEPTH) - die(_(include_depth_advice), MAX_INCLUDE_DEPTH, path, - !cf ? "<unknown>" : - cf->name ? cf->name : - "the command line"); - ret = git_config_from_file(git_config_include, path, inc); - inc->depth--; - } - strbuf_release(&buf); - free(expanded); - return ret; -} - -static 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(struct strbuf *pat) -{ - struct strbuf path = STRBUF_INIT; - char *expanded; - int prefix = 0; - - expanded = expand_user_path(pat->buf, 1); - if (expanded) { - strbuf_reset(pat); - strbuf_addstr(pat, expanded); - free(expanded); - } - - if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) { - const char *slash; - - if (!cf || !cf->path) - return error(_("relative config include " - "conditionals must come from files")); - - strbuf_realpath(&path, cf->path, 1); - slash = find_last_dir_sep(path.buf); - if (!slash) - 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 config_options *opts, - const char *cond, size_t cond_len, int icase) -{ - struct strbuf text = STRBUF_INIT; - struct strbuf pattern = STRBUF_INIT; - int ret = 0, prefix; - const char *git_dir; - int already_tried_absolute = 0; - - if (opts->git_dir) - git_dir = opts->git_dir; - else - goto done; - - strbuf_realpath(&text, git_dir, 1); - strbuf_add(&pattern, cond, cond_len); - prefix = prepare_include_condition_pattern(&pattern); - -again: - if (prefix < 0) - goto done; - - if (prefix > 0) { - /* - * perform literal matching on the prefix part so that - * any wildcard character in it can't create side effects. - */ - if (text.len < prefix) - goto done; - if (!icase && strncmp(pattern.buf, text.buf, prefix)) - goto done; - if (icase && strncasecmp(pattern.buf, text.buf, prefix)) - goto done; - } - - ret = !wildmatch(pattern.buf + prefix, text.buf + prefix, - 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 include_condition_is_true(const struct config_options *opts, - const char *cond, size_t cond_len) -{ - - if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len)) - return include_by_gitdir(opts, cond, cond_len, 0); - else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len)) - return include_by_gitdir(opts, cond, cond_len, 1); - else if (skip_prefix_mem(cond, cond_len, "onbranch:", &cond, &cond_len)) - return include_by_branch(cond, cond_len); - - /* unknown conditionals are always false */ - return 0; -} - -int git_config_include(const char *var, const char *value, void *data) -{ - struct config_include_data *inc = data; - const char *cond, *key; - 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, inc->data); - if (ret < 0) - return ret; - - if (!strcmp(var, "include.path")) - ret = handle_path_include(value, inc); - - if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) && - (cond && include_condition_is_true(inc->opts, cond, cond_len)) && - !strcmp(key, "path")) - ret = handle_path_include(value, inc); - - return ret; -} - -void git_config_push_parameter(const char *text) -{ - struct strbuf env = STRBUF_INIT; - const char *old = getenv(CONFIG_DATA_ENVIRONMENT); - if (old && *old) { - strbuf_addstr(&env, old); - strbuf_addch(&env, ' '); - } - sq_quote_buf(&env, text); - setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1); - strbuf_release(&env); -} - -static inline int iskeychar(int c) -{ - return isalnum(c) || c == '-'; -} - -/* - * Auxiliary function to sanity-check and split the key into the section - * identifier and variable name. - * - * Returns 0 on success, -1 when there is an invalid character in the key and - * -2 if there is no section name in the key. - * - * store_key - pointer to char* which will hold a copy of the key with - * lowercase section and variable name - * baselen - pointer to size_t which will hold the length of the - * section + subsection part, can be NULL - */ -static int git_config_parse_key_1(const char *key, char **store_key, size_t *baselen_, int quiet) -{ - 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) { - if (!quiet) - error(_("key does not contain a section: %s"), key); - return -CONFIG_NO_SECTION_OR_NAME; - } - - if (!last_dot[1]) { - if (!quiet) - error(_("key does not contain variable name: %s"), key); - return -CONFIG_NO_SECTION_OR_NAME; - } - - baselen = last_dot - key; - if (baselen_) - *baselen_ = baselen; - - /* - * Validate the key and while at it, lower case it for matching. - */ - if (store_key) - *store_key = xmallocz(strlen(key)); - - dot = 0; - for (i = 0; key[i]; i++) { - unsigned char c = key[i]; - if (c == '.') - dot = 1; - /* Leave the extended basename untouched.. */ - if (!dot || i > baselen) { - if (!iskeychar(c) || - (i == baselen + 1 && !isalpha(c))) { - if (!quiet) - error(_("invalid key: %s"), key); - goto out_free_ret_1; - } - c = tolower(c); - } else if (c == '\n') { - if (!quiet) - error(_("invalid key (newline): %s"), key); - goto out_free_ret_1; - } - if (store_key) - (*store_key)[i] = c; - } - - return 0; - -out_free_ret_1: - if (store_key) { - FREE_AND_NULL(*store_key); - } - return -CONFIG_INVALID_KEY; -} - -int git_config_parse_key(const char *key, char **store_key, size_t *baselen) -{ - return git_config_parse_key_1(key, store_key, baselen, 0); -} - -int git_config_key_is_valid(const char *key) -{ - return !git_config_parse_key_1(key, NULL, NULL, 1); -} - -int git_config_parse_parameter(const char *text, - config_fn_t fn, void *data) -{ - const char *value; - char *canonical_name; - struct strbuf **pair; - int ret; - - pair = strbuf_split_str(text, '=', 2); - if (!pair[0]) - return error(_("bogus config parameter: %s"), text); - - if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') { - strbuf_setlen(pair[0], pair[0]->len - 1); - value = pair[1] ? pair[1]->buf : ""; - } else { - value = NULL; - } - - strbuf_trim(pair[0]); - if (!pair[0]->len) { - strbuf_list_free(pair); - return error(_("bogus config parameter: %s"), text); - } - - if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) { - ret = -1; - } else { - ret = (fn(canonical_name, value, data) < 0) ? -1 : 0; - free(canonical_name); - } - strbuf_list_free(pair); - return ret; -} - -int git_config_from_parameters(config_fn_t fn, void *data) -{ - const char *env = getenv(CONFIG_DATA_ENVIRONMENT); - int ret = 0; - char *envw; - const char **argv = NULL; - int nr = 0, alloc = 0; - int i; - struct config_source source; - - if (!env) - return 0; - - memset(&source, 0, sizeof(source)); - source.prev = cf; - source.origin_type = CONFIG_ORIGIN_CMDLINE; - cf = &source; - - /* sq_dequote will write over it */ - envw = xstrdup(env); - - if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) { - ret = error(_("bogus format in %s"), CONFIG_DATA_ENVIRONMENT); - goto out; - } - - for (i = 0; i < nr; i++) { - if (git_config_parse_parameter(argv[i], fn, data) < 0) { - ret = -1; - goto out; - } - } - -out: - free(argv); - free(envw); - cf = source.prev; - return ret; -} - -static int get_next_char(void) -{ - int c = cf->do_fgetc(cf); - - if (c == '\r') { - /* DOS like systems */ - c = cf->do_fgetc(cf); - if (c != '\n') { - if (c != EOF) - cf->do_ungetc(c, cf); - c = '\r'; - } - } - - if (c != EOF && ++cf->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. - */ - cf->eof = 1; - return 0; - } - - if (c == '\n') - cf->linenr++; - if (c == EOF) { - cf->eof = 1; - cf->linenr++; - c = '\n'; - } - return c; -} - -static char *parse_value(void) -{ - int quote = 0, comment = 0, space = 0; - - strbuf_reset(&cf->value); - for (;;) { - int c = get_next_char(); - if (c == '\n') { - if (quote) { - cf->linenr--; - return NULL; - } - return cf->value.buf; - } - if (comment) - continue; - if (isspace(c) && !quote) { - if (cf->value.len) - space++; - continue; - } - if (!quote) { - if (c == ';' || c == '#') { - comment = 1; - continue; - } - } - for (; space; space--) - strbuf_addch(&cf->value, ' '); - if (c == '\\') { - c = get_next_char(); - switch (c) { - case '\n': - continue; - case 't': - c = '\t'; - break; - case 'b': - c = '\b'; - break; - case 'n': - c = '\n'; - break; - /* Some characters escape as themselves */ - case '\\': case '"': - break; - /* Reject unknown escape sequences */ - default: - return NULL; - } - strbuf_addch(&cf->value, c); - continue; - } - if (c == '"') { - quote = 1-quote; - continue; - } - strbuf_addch(&cf->value, c); - } -} - -static int get_value(config_fn_t fn, void *data, struct strbuf *name) -{ - int c; - char *value; - int ret; - - /* Get the full name */ - for (;;) { - c = get_next_char(); - if (cf->eof) - break; - if (!iskeychar(c)) - break; - strbuf_addch(name, tolower(c)); - } - - while (c == ' ' || c == '\t') - c = get_next_char(); - - value = NULL; - if (c != '\n') { - if (c != '=') - return -1; - value = parse_value(); - if (!value) - return -1; - } - /* - * We already consumed the \n, but we need linenr to point to - * the line we just parsed during the call to fn to get - * accurate line number in error messages. - */ - cf->linenr--; - ret = fn(name->buf, value, data); - if (ret >= 0) - cf->linenr++; - return ret; -} - -static int get_extended_base_var(struct strbuf *name, int c) -{ - cf->subsection_case_sensitive = 0; - do { - if (c == '\n') - goto error_incomplete_line; - c = get_next_char(); - } while (isspace(c)); - - /* We require the format to be '[base "extension"]' */ - if (c != '"') - return -1; - strbuf_addch(name, '.'); - - for (;;) { - int c = get_next_char(); - if (c == '\n') - goto error_incomplete_line; - if (c == '"') - break; - if (c == '\\') { - c = get_next_char(); - if (c == '\n') - goto error_incomplete_line; - } - strbuf_addch(name, c); - } - - /* Final ']' */ - if (get_next_char() != ']') - return -1; - return 0; -error_incomplete_line: - cf->linenr--; - return -1; -} - -static int get_base_var(struct strbuf *name) -{ - cf->subsection_case_sensitive = 1; - for (;;) { - int c = get_next_char(); - if (cf->eof) - return -1; - if (c == ']') - return 0; - if (isspace(c)) - return get_extended_base_var(name, c); - if (!iskeychar(c) && c != '.') - return -1; - strbuf_addch(name, tolower(c)); - } -} - -struct parse_event_data { - enum config_event_t previous_type; - size_t previous_offset; - const struct config_options *opts; -}; - -static int do_event(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 = cf->do_ftell(cf); - /* - * 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, data->opts->event_fn_data) < 0) - return -1; - - data->previous_type = type; - data->previous_offset = offset; - - return 0; -} - -static int git_parse_source(config_fn_t fn, void *data, - const struct config_options *opts) -{ - int comment = 0; - size_t baselen = 0; - struct strbuf *var = &cf->var; - int error_return = 0; - char *error_msg = NULL; - - /* U+FEFF Byte Order Mark in UTF8 */ - const char *bomptr = utf8_bom; - - /* For the parser event callback */ - struct parse_event_data event_data = { - CONFIG_EVENT_EOF, 0, opts - }; - - for (;;) { - int c; - - c = get_next_char(); - if (bomptr && *bomptr) { - /* We are at the file beginning; skip UTF8-encoded BOM - * if present. Sane editors won't put this in on their - * own, but e.g. Windows Notepad will do it happily. */ - if (c == (*bomptr & 0377)) { - bomptr++; - continue; - } else { - /* Do not tolerate partial BOM. */ - if (bomptr != utf8_bom) - break; - /* No BOM at file beginning. Cool. */ - bomptr = NULL; - } - } - if (c == '\n') { - if (cf->eof) { - if (do_event(CONFIG_EVENT_EOF, &event_data) < 0) - return -1; - return 0; - } - if (do_event(CONFIG_EVENT_WHITESPACE, &event_data) < 0) - return -1; - comment = 0; - continue; - } - if (comment) - continue; - if (isspace(c)) { - if (do_event(CONFIG_EVENT_WHITESPACE, &event_data) < 0) - return -1; - continue; - } - if (c == '#' || c == ';') { - if (do_event(CONFIG_EVENT_COMMENT, &event_data) < 0) - return -1; - comment = 1; - continue; - } - if (c == '[') { - if (do_event(CONFIG_EVENT_SECTION, &event_data) < 0) - return -1; - - /* Reset prior to determining a new stem */ - strbuf_reset(var); - if (get_base_var(var) < 0 || var->len < 1) - break; - strbuf_addch(var, '.'); - baselen = var->len; - continue; - } - if (!isalpha(c)) - break; - - if (do_event(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(fn, data, var) < 0) - break; - } - - if (do_event(CONFIG_EVENT_ERROR, &event_data) < 0) - return -1; - - switch (cf->origin_type) { - case CONFIG_ORIGIN_BLOB: - error_msg = xstrfmt(_("bad config line %d in blob %s"), - cf->linenr, cf->name); - break; - case CONFIG_ORIGIN_FILE: - error_msg = xstrfmt(_("bad config line %d in file %s"), - cf->linenr, cf->name); - break; - case CONFIG_ORIGIN_STDIN: - error_msg = xstrfmt(_("bad config line %d in standard input"), - cf->linenr); - break; - case CONFIG_ORIGIN_SUBMODULE_BLOB: - error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"), - cf->linenr, cf->name); - break; - case CONFIG_ORIGIN_CMDLINE: - error_msg = xstrfmt(_("bad config line %d in command line %s"), - cf->linenr, cf->name); - break; - default: - error_msg = xstrfmt(_("bad config line %d in %s"), - cf->linenr, cf->name); - } - - switch (opts && opts->error_action ? - opts->error_action : - cf->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; -} - -static uintmax_t get_unit_factor(const char *end) -{ - if (!*end) - return 1; - else if (!strcasecmp(end, "k")) - return 1024; - else if (!strcasecmp(end, "m")) - return 1024 * 1024; - else if (!strcasecmp(end, "g")) - return 1024 * 1024 * 1024; - return 0; -} - -static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max) -{ - if (value && *value) { - char *end; - intmax_t val; - uintmax_t uval; - uintmax_t factor; - - errno = 0; - val = strtoimax(value, &end, 0); - if (errno == ERANGE) - return 0; - factor = get_unit_factor(end); - if (!factor) { - errno = EINVAL; - return 0; - } - uval = val < 0 ? -val : val; - if (unsigned_mult_overflows(factor, uval) || - factor * uval > max) { - errno = ERANGE; - return 0; - } - val *= factor; - *ret = val; - return 1; - } - errno = EINVAL; - return 0; -} - -static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max) -{ - if (value && *value) { - char *end; - uintmax_t val; - uintmax_t factor; - - errno = 0; - val = strtoumax(value, &end, 0); - if (errno == ERANGE) - return 0; - factor = get_unit_factor(end); - if (!factor) { - errno = EINVAL; - return 0; - } - if (unsigned_mult_overflows(factor, val) || - factor * val > max) { - errno = ERANGE; - return 0; - } - val *= factor; - *ret = val; - return 1; - } - errno = EINVAL; - return 0; -} - -static int git_parse_int(const char *value, int *ret) -{ - intmax_t tmp; - if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int))) - return 0; - *ret = tmp; - return 1; -} - -static int git_parse_int64(const char *value, int64_t *ret) -{ - intmax_t tmp; - if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t))) - return 0; - *ret = tmp; - return 1; -} - -int git_parse_ulong(const char *value, unsigned long *ret) -{ - uintmax_t tmp; - if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long))) - return 0; - *ret = tmp; - return 1; -} - -int git_parse_ssize_t(const char *value, ssize_t *ret) -{ - intmax_t tmp; - if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t))) - return 0; - *ret = tmp; - return 1; -} - -NORETURN -static void die_bad_number(const char *name, const char *value) -{ - const char *error_type = (errno == ERANGE) ? - N_("out of range") : N_("invalid unit"); - const char *bad_numeric = N_("bad numeric config value '%s' for '%s': %s"); - - if (!value) - value = ""; - - if (!strcmp(name, "GIT_TEST_GETTEXT_POISON")) - /* - * We explicitly *don't* use _() here since it would - * cause an infinite loop with _() needing to call - * use_gettext_poison(). This is why marked up - * translations with N_() above. - */ - die(bad_numeric, value, name, error_type); - - if (!(cf && cf->name)) - die(_(bad_numeric), value, name, _(error_type)); - - switch (cf->origin_type) { - case CONFIG_ORIGIN_BLOB: - die(_("bad numeric config value '%s' for '%s' in blob %s: %s"), - value, name, cf->name, _(error_type)); - case CONFIG_ORIGIN_FILE: - die(_("bad numeric config value '%s' for '%s' in file %s: %s"), - value, name, cf->name, _(error_type)); - case CONFIG_ORIGIN_STDIN: - die(_("bad numeric config value '%s' for '%s' in standard input: %s"), - value, name, _(error_type)); - case CONFIG_ORIGIN_SUBMODULE_BLOB: - die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"), - value, name, cf->name, _(error_type)); - case CONFIG_ORIGIN_CMDLINE: - die(_("bad numeric config value '%s' for '%s' in command line %s: %s"), - value, name, cf->name, _(error_type)); - default: - die(_("bad numeric config value '%s' for '%s' in %s: %s"), - value, name, cf->name, _(error_type)); - } -} - -int git_config_int(const char *name, const char *value) -{ - int ret; - if (!git_parse_int(value, &ret)) - die_bad_number(name, value); - return ret; -} - -int64_t git_config_int64(const char *name, const char *value) -{ - int64_t ret; - if (!git_parse_int64(value, &ret)) - die_bad_number(name, value); - return ret; -} - -unsigned long git_config_ulong(const char *name, const char *value) -{ - unsigned long ret; - if (!git_parse_ulong(value, &ret)) - die_bad_number(name, value); - return ret; -} - -ssize_t git_config_ssize_t(const char *name, const char *value) -{ - ssize_t ret; - if (!git_parse_ssize_t(value, &ret)) - die_bad_number(name, value); - return ret; -} - -static int git_parse_maybe_bool_text(const char *value) -{ - if (!value) - return 1; - if (!*value) - return 0; - if (!strcasecmp(value, "true") - || !strcasecmp(value, "yes") - || !strcasecmp(value, "on")) - return 1; - if (!strcasecmp(value, "false") - || !strcasecmp(value, "no") - || !strcasecmp(value, "off")) - return 0; - return -1; -} - -int git_parse_maybe_bool(const char *value) -{ - int v = git_parse_maybe_bool_text(value); - if (0 <= v) - return v; - if (git_parse_int(value, &v)) - return !!v; - return -1; -} - -int git_config_bool_or_int(const char *name, const char *value, int *is_bool) -{ - int v = git_parse_maybe_bool_text(value); - if (0 <= v) { - *is_bool = 1; - return v; - } - *is_bool = 0; - return git_config_int(name, value); -} - -int git_config_bool(const char *name, const char *value) -{ - int discard; - return !!git_config_bool_or_int(name, value, &discard); -} - -int git_config_string(const char **dest, const char *var, const char *value) -{ - if (!value) - return config_error_nonbool(var); - *dest = xstrdup(value); - return 0; -} - -int git_config_pathname(const char **dest, const char *var, const char *value) -{ - if (!value) - return config_error_nonbool(var); - *dest = expand_user_path(value, 0); - if (!*dest) - die(_("failed to expand user dir in: '%s'"), value); - return 0; -} - -int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *value) -{ - if (!value) - return config_error_nonbool(var); - if (parse_expiry_date(value, timestamp)) - return error(_("'%s' for '%s' is not a valid timestamp"), - value, var); - return 0; -} - -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, 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 { - int abbrev = git_config_int(var, value); - 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); - if (level == -1) - level = Z_DEFAULT_COMPRESSION; - else if (level < 0 || level > Z_BEST_COMPRESSION) - die(_("bad zlib compression level %d"), level); - zlib_compression_level = level; - zlib_compression_seen = 1; - return 0; - } - - if (!strcmp(var, "core.compression")) { - int level = git_config_int(var, value); - if (level == -1) - level = Z_DEFAULT_COMPRESSION; - else if (level < 0 || level > Z_BEST_COMPRESSION) - die(_("bad zlib compression level %d"), level); - core_compression_level = level; - core_compression_seen = 1; - if (!zlib_compression_seen) - zlib_compression_level = level; - if (!pack_compression_seen) - pack_compression_level = level; - return 0; - } - - if (!strcmp(var, "core.packedgitwindowsize")) { - int pgsz_x2 = getpagesize() * 2; - packed_git_window_size = git_config_ulong(var, value); - - /* This value must be multiple of (pagesize * 2) */ - packed_git_window_size /= pgsz_x2; - if (packed_git_window_size < 1) - packed_git_window_size = 1; - packed_git_window_size *= pgsz_x2; - return 0; - } - - if (!strcmp(var, "core.bigfilethreshold")) { - big_file_threshold = git_config_ulong(var, value); - return 0; - } - - if (!strcmp(var, "core.packedgitlimit")) { - packed_git_limit = git_config_ulong(var, value); - return 0; - } - - if (!strcmp(var, "core.deltabasecachelimit")) { - delta_base_cache_limit = git_config_ulong(var, value); - return 0; - } - - if (!strcmp(var, "core.autocrlf")) { - if (value && !strcasecmp(value, "input")) { - auto_crlf = AUTO_CRLF_INPUT; - return 0; - } - auto_crlf = git_config_bool(var, value); - return 0; - } - - if (!strcmp(var, "core.safecrlf")) { - int eol_rndtrp_die; - if (value && !strcasecmp(value, "warn")) { - global_conv_flags_eol = CONV_EOL_RNDTRP_WARN; - return 0; - } - eol_rndtrp_die = git_config_bool(var, value); - global_conv_flags_eol = eol_rndtrp_die ? - CONV_EOL_RNDTRP_DIE : 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 character")); - return 0; - } - - if (!strcmp(var, "core.askpass")) - return git_config_string(&askpass_program, var, value); - - if (!strcmp(var, "core.excludesfile")) - return git_config_pathname(&excludes_file, var, value); - - if (!strcmp(var, "core.whitespace")) { - if (!value) - return config_error_nonbool(var); - whitespace_rule_cfg = parse_whitespace_rule(value); - return 0; - } - - if (!strcmp(var, "core.fsyncobjectfiles")) { - fsync_object_files = git_config_bool(var, value); - return 0; - } - - if (!strcmp(var, "core.preloadindex")) { - core_preload_index = git_config_bool(var, value); - return 0; - } - - if (!strcmp(var, "core.createobject")) { - if (!strcmp(value, "rename")) - object_creation_mode = OBJECT_CREATION_USES_RENAMES; - else if (!strcmp(value, "link")) - object_creation_mode = OBJECT_CREATION_USES_HARDLINKS; - else - die(_("invalid mode for object creation: %s"), value); - return 0; - } - - if (!strcmp(var, "core.sparsecheckout")) { - core_apply_sparse_checkout = git_config_bool(var, value); - return 0; - } - - if (!strcmp(var, "core.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.usereplacerefs")) { - read_replace_refs = git_config_bool(var, value); - return 0; - } - - /* Add other config variables here and to Documentation/config.txt. */ - return platform_core_config(var, value, cb); -} - -static int git_default_i18n_config(const char *var, const char *value) -{ - if (!strcmp(var, "i18n.commitencoding")) - return git_config_string(&git_commit_encoding, var, value); - - if (!strcmp(var, "i18n.logoutputencoding")) - return git_config_string(&git_log_output_encoding, var, value); - - /* Add other config variables here and to Documentation/config.txt. */ - return 0; -} - -static int git_default_branch_config(const char *var, const char *value) -{ - if (!strcmp(var, "branch.autosetupmerge")) { - if (value && !strcasecmp(value, "always")) { - git_branch_track = BRANCH_TRACK_ALWAYS; - return 0; - } - git_branch_track = git_config_bool(var, value); - return 0; - } - if (!strcmp(var, "branch.autosetuprebase")) { - if (!value) - return config_error_nonbool(var); - else if (!strcmp(value, "never")) - autorebase = AUTOREBASE_NEVER; - else if (!strcmp(value, "local")) - autorebase = AUTOREBASE_LOCAL; - else if (!strcmp(value, "remote")) - autorebase = AUTOREBASE_REMOTE; - else if (!strcmp(value, "always")) - autorebase = AUTOREBASE_ALWAYS; - else - return error(_("malformed value for %s"), var); - return 0; - } - - /* Add other config variables here and to Documentation/config.txt. */ - return 0; -} - -static int git_default_push_config(const char *var, const char *value) -{ - if (!strcmp(var, "push.default")) { - if (!value) - return config_error_nonbool(var); - else if (!strcmp(value, "nothing")) - push_default = PUSH_DEFAULT_NOTHING; - else if (!strcmp(value, "matching")) - push_default = PUSH_DEFAULT_MATCHING; - else if (!strcmp(value, "simple")) - push_default = PUSH_DEFAULT_SIMPLE; - else if (!strcmp(value, "upstream")) - push_default = PUSH_DEFAULT_UPSTREAM; - else if (!strcmp(value, "tracking")) /* deprecated */ - push_default = PUSH_DEFAULT_UPSTREAM; - else if (!strcmp(value, "current")) - push_default = PUSH_DEFAULT_CURRENT; - else { - error(_("malformed value for %s: %s"), var, value); - return error(_("must be one of nothing, matching, simple, " - "upstream or current")); - } - return 0; - } - - /* Add other config variables here and to Documentation/config.txt. */ - return 0; -} - -static int git_default_mailmap_config(const char *var, const char *value) -{ - if (!strcmp(var, "mailmap.file")) - return git_config_pathname(&git_mailmap_file, var, value); - if (!strcmp(var, "mailmap.blob")) - return git_config_string(&git_mailmap_blob, var, value); - - /* Add other config variables here and to Documentation/config.txt. */ - return 0; -} - -int git_default_config(const char *var, const char *value, void *cb) -{ - if (starts_with(var, "core.")) - return git_default_core_config(var, value, cb); - - if (starts_with(var, "user.") || - starts_with(var, "author.") || - starts_with(var, "committer.")) - return git_ident_config(var, value, 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, "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); - return 0; - } - - if (!strcmp(var, "pack.compression")) { - int level = git_config_int(var, value); - if (level == -1) - level = Z_DEFAULT_COMPRESSION; - else if (level < 0 || level > Z_BEST_COMPRESSION) - die(_("bad pack compression level %d"), level); - pack_compression_level = level; - pack_compression_seen = 1; - return 0; - } - - /* Add other config variables here and to Documentation/config.txt. */ - return 0; -} - -/* - * All source specific fields in the union, die_on_error, name and the callbacks - * fgetc, ungetc, ftell of top need to be initialized before calling - * this function. - */ -static int do_config_from(struct config_source *top, config_fn_t fn, void *data, - const struct config_options *opts) -{ - int ret; - - /* push config-file parsing state stack */ - top->prev = cf; - top->linenr = 1; - top->eof = 0; - top->total_len = 0; - strbuf_init(&top->value, 1024); - strbuf_init(&top->var, 1024); - cf = top; - - ret = git_parse_source(fn, data, opts); - - /* pop config-file parsing state stack */ - strbuf_release(&top->value); - strbuf_release(&top->var); - cf = top->prev; - - return ret; -} - -static int do_config_from_file(config_fn_t fn, - const enum config_origin_type origin_type, - const char *name, const char *path, FILE *f, - void *data, const struct config_options *opts) -{ - struct config_source top; - 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, opts); - funlockfile(f); - return ret; -} - -static int git_config_from_stdin(config_fn_t fn, void *data) -{ - return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin, - data, NULL); -} - -int git_config_from_file_with_options(config_fn_t fn, const char *filename, - void *data, - const struct config_options *opts) -{ - int ret = -1; - FILE *f; - - f = fopen_or_warn(filename, "r"); - if (f) { - ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename, - filename, f, data, 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, 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, const struct config_options *opts) -{ - struct config_source top; - - top.u.buf.buf = buf; - top.u.buf.len = len; - top.u.buf.pos = 0; - top.origin_type = origin_type; - top.name = name; - top.path = NULL; - top.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, opts); -} - -int git_config_from_blob_oid(config_fn_t fn, - const char *name, - const struct object_id *oid, - void *data) -{ - enum object_type type; - char *buf; - unsigned long size; - int ret; - - buf = read_object_file(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, NULL); - free(buf); - - return ret; -} - -static int git_config_from_blob_ref(config_fn_t fn, - const char *name, - void *data) -{ - struct object_id oid; - - if (get_oid(name, &oid) < 0) - return error(_("unable to resolve config blob '%s'"), name); - return git_config_from_blob_oid(fn, name, &oid, data); -} - -const char *git_etc_gitconfig(void) -{ - static const char *system_wide; - if (!system_wide) - system_wide = system_path(ETC_GITCONFIG); - return system_wide; -} - -/* - * Parse environment variable 'k' as a boolean (in various - * possible spellings); if missing, use the default value 'def'. - */ -int git_env_bool(const char *k, int def) -{ - const char *v = getenv(k); - return v ? git_config_bool(k, v) : def; -} - -/* - * Parse environment variable 'k' as ulong with possibly a unit - * suffix; if missing, use the default value 'val'. - */ -unsigned long git_env_ulong(const char *k, unsigned long val) -{ - const char *v = getenv(k); - if (v && !git_parse_ulong(v, &val)) - die(_("failed to parse %s"), k); - return val; -} - -int git_config_system(void) -{ - return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0); -} - -static int do_git_config_sequence(const struct config_options *opts, - config_fn_t fn, void *data) -{ - int ret = 0; - char *xdg_config = xdg_config_home("config"); - char *user_config = expand_user_path("~/.gitconfig", 0); - char *repo_config; - enum config_scope prev_parsing_scope = current_parsing_scope; - - if (opts->commondir) - repo_config = mkpathdup("%s/config", opts->commondir); - else if (opts->git_dir) - BUG("git_dir without commondir"); - else - repo_config = NULL; - - current_parsing_scope = CONFIG_SCOPE_SYSTEM; - if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, - opts->system_gently ? - ACCESS_EACCES_OK : 0)) - ret += git_config_from_file(fn, git_etc_gitconfig(), - data); - - current_parsing_scope = CONFIG_SCOPE_GLOBAL; - if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK)) - ret += git_config_from_file(fn, xdg_config, data); - - if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK)) - ret += git_config_from_file(fn, user_config, data); - - current_parsing_scope = CONFIG_SCOPE_LOCAL; - if (!opts->ignore_repo && repo_config && - !access_or_die(repo_config, R_OK, 0)) - ret += git_config_from_file(fn, repo_config, data); - - current_parsing_scope = CONFIG_SCOPE_WORKTREE; - if (!opts->ignore_worktree && repository_format_worktree_config) { - char *path = git_pathdup("config.worktree"); - if (!access_or_die(path, R_OK, 0)) - ret += git_config_from_file(fn, path, data); - free(path); - } - - current_parsing_scope = CONFIG_SCOPE_COMMAND; - if (!opts->ignore_cmdline && git_config_from_parameters(fn, data) < 0) - die(_("unable to parse command-line config")); - - current_parsing_scope = prev_parsing_scope; - free(xdg_config); - free(user_config); - free(repo_config); - return ret; -} - -int config_with_options(config_fn_t fn, void *data, - struct git_config_source *config_source, - const struct config_options *opts) -{ - struct config_include_data inc = CONFIG_INCLUDE_INIT; - - if (opts->respect_includes) { - inc.fn = fn; - inc.data = data; - inc.opts = opts; - fn = git_config_include; - data = &inc; - } - - if (config_source) - current_parsing_scope = config_source->scope; - - /* - * If we have a specific filename, use it. Otherwise, follow the - * regular lookup sequence. - */ - if (config_source && config_source->use_stdin) - return git_config_from_stdin(fn, data); - else if (config_source && config_source->file) - return git_config_from_file(fn, config_source->file, data); - else if (config_source && config_source->blob) - return git_config_from_blob_ref(fn, config_source->blob, data); - - return do_git_config_sequence(opts, fn, data); -} - -static void configset_iter(struct config_set *cs, config_fn_t fn, void *data) -{ - int i, value_index; - struct string_list *values; - struct config_set_element *entry; - struct configset_list *list = &cs->list; - - for (i = 0; i < list->nr; i++) { - entry = list->items[i].e; - value_index = list->items[i].value_index; - values = &entry->value_list; - - current_config_kvi = values->items[value_index].util; - - if (fn(entry->key, values->items[value_index].string, data) < 0) - git_die_config_linenr(entry->key, - current_config_kvi->filename, - current_config_kvi->linenr); - - current_config_kvi = NULL; - } -} - -void read_early_config(config_fn_t cb, void *data) -{ - struct config_options opts = {0}; - struct strbuf commondir = STRBUF_INIT; - struct strbuf gitdir = STRBUF_INIT; - - opts.respect_includes = 1; - - if (have_git_dir()) { - opts.commondir = get_git_common_dir(); - opts.git_dir = get_git_dir(); - /* - * When setup_git_directory() was not yet asked to discover the - * GIT_DIR, we ask discover_git_directory() to figure out whether there - * is any repository config we should use (but unlike - * setup_git_directory_gently(), no global state is changed, most - * notably, the current working directory is still the same after the - * call). - */ - } else if (!discover_git_directory(&commondir, &gitdir)) { - opts.commondir = commondir.buf; - opts.git_dir = gitdir.buf; - } - - config_with_options(cb, data, NULL, &opts); - - strbuf_release(&commondir); - strbuf_release(&gitdir); -} - -/* - * 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, &opts); -} - -static struct config_set_element *configset_find_element(struct config_set *cs, const char *key) -{ - struct config_set_element k; - struct config_set_element *found_entry; - char *normalized_key; - /* - * `key` may come from the user, so normalize it before using it - * for querying entries from the hashmap. - */ - if (git_config_parse_key(key, &normalized_key, NULL)) - return NULL; - - hashmap_entry_init(&k.ent, strhash(normalized_key)); - k.key = normalized_key; - found_entry = hashmap_get_entry(&cs->config_hash, &k, ent, NULL); - free(normalized_key); - return found_entry; -} - -static int configset_add_value(struct config_set *cs, const char *key, const char *value) -{ - struct config_set_element *e; - struct string_list_item *si; - struct configset_list_item *l_item; - struct key_value_info *kv_info = xmalloc(sizeof(*kv_info)); - - e = configset_find_element(cs, key); - /* - * Since the keys are being fed by git_config*() callback mechanism, they - * are already normalized. So simply add them without any further munging. - */ - if (!e) { - e = xmalloc(sizeof(*e)); - hashmap_entry_init(&e->ent, strhash(key)); - e->key = xstrdup(key); - string_list_init(&e->value_list, 1); - hashmap_add(&cs->config_hash, &e->ent); - } - si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value)); - - ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc); - l_item = &cs->list.items[cs->list.nr++]; - l_item->e = e; - l_item->value_index = e->value_list.nr - 1; - - if (!cf) - BUG("configset_add_value has no source"); - if (cf->name) { - kv_info->filename = strintern(cf->name); - kv_info->linenr = cf->linenr; - kv_info->origin_type = cf->origin_type; - } else { - /* for values read from `git_config_from_parameters()` */ - kv_info->filename = NULL; - kv_info->linenr = -1; - kv_info->origin_type = CONFIG_ORIGIN_CMDLINE; - } - kv_info->scope = current_parsing_scope; - si->util = kv_info; - - return 0; -} - -static int config_set_element_cmp(const void *unused_cmp_data, - const struct hashmap_entry *eptr, - const struct hashmap_entry *entry_or_key, - const void *unused_keydata) -{ - 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 *cs) -{ - hashmap_init(&cs->config_hash, config_set_element_cmp, NULL, 0); - cs->hash_initialized = 1; - cs->list.nr = 0; - cs->list.alloc = 0; - cs->list.items = NULL; -} - -void git_configset_clear(struct config_set *cs) -{ - struct config_set_element *entry; - struct hashmap_iter iter; - if (!cs->hash_initialized) - return; - - hashmap_for_each_entry(&cs->config_hash, &iter, entry, - ent /* member name */) { - free(entry->key); - string_list_clear(&entry->value_list, 1); - } - hashmap_free_entries(&cs->config_hash, struct config_set_element, ent); - cs->hash_initialized = 0; - free(cs->list.items); - cs->list.nr = 0; - cs->list.alloc = 0; - cs->list.items = NULL; -} - -static int config_set_callback(const char *key, const char *value, void *cb) -{ - struct config_set *cs = cb; - configset_add_value(cs, key, value); - return 0; -} - -int git_configset_add_file(struct config_set *cs, const char *filename) -{ - return git_config_from_file(config_set_callback, filename, cs); -} - -int git_configset_get_value(struct config_set *cs, const char *key, const char **value) -{ - const struct string_list *values = NULL; - /* - * Follows "last one wins" semantic, i.e., if there are multiple matches for the - * queried key in the files of the configset, the value returned will be the last - * value in the value list for that key. - */ - values = git_configset_get_value_multi(cs, key); - - if (!values) - return 1; - assert(values->nr > 0); - *value = values->items[values->nr - 1].string; - return 0; -} - -const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key) -{ - struct config_set_element *e = configset_find_element(cs, key); - return e ? &e->value_list : NULL; -} - -int git_configset_get_string(struct config_set *cs, const char *key, char **dest) -{ - const char *value; - if (!git_configset_get_value(cs, key, &value)) - return git_config_string((const char **)dest, key, value); - else - return 1; -} - -int git_configset_get_string_tmp(struct config_set *cs, const char *key, - const char **dest) -{ - const char *value; - if (!git_configset_get_value(cs, key, &value)) { - if (!value) - return config_error_nonbool(key); - *dest = value; - return 0; - } else { - return 1; - } -} - -int git_configset_get_int(struct config_set *cs, const char *key, int *dest) -{ - const char *value; - if (!git_configset_get_value(cs, key, &value)) { - *dest = git_config_int(key, value); - return 0; - } else - return 1; -} - -int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest) -{ - const char *value; - if (!git_configset_get_value(cs, key, &value)) { - *dest = git_config_ulong(key, value); - return 0; - } else - return 1; -} - -int git_configset_get_bool(struct config_set *cs, const char *key, int *dest) -{ - const char *value; - if (!git_configset_get_value(cs, key, &value)) { - *dest = git_config_bool(key, value); - return 0; - } else - return 1; -} - -int git_configset_get_bool_or_int(struct config_set *cs, const char *key, - int *is_bool, int *dest) -{ - const char *value; - if (!git_configset_get_value(cs, key, &value)) { - *dest = git_config_bool_or_int(key, value, is_bool); - return 0; - } else - return 1; -} - -int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest) -{ - const char *value; - if (!git_configset_get_value(cs, key, &value)) { - *dest = git_parse_maybe_bool(value); - if (*dest == -1) - return -1; - return 0; - } else - return 1; -} - -int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest) -{ - const char *value; - if (!git_configset_get_value(cs, key, &value)) - return git_config_pathname(dest, key, value); - else - return 1; -} - -/* Functions use to read configuration from a repository */ -static void repo_read_config(struct repository *repo) -{ - struct config_options opts = { 0 }; - - opts.respect_includes = 1; - opts.commondir = repo->commondir; - opts.git_dir = repo->gitdir; - - if (!repo->config) - repo->config = xcalloc(1, sizeof(struct config_set)); - else - git_configset_clear(repo->config); - - git_configset_init(repo->config); - - if (config_with_options(config_set_callback, repo->config, NULL, &opts) < 0) - /* - * config_with_options() normally returns only - * zero, as most errors are fatal, and - * non-fatal potential errors are guarded by "if" - * statements that are entered only when no error is - * possible. - * - * If we ever encounter a non-fatal error, it means - * something went really wrong and we should stop - * immediately. - */ - die(_("unknown error occurred while reading the configuration files")); -} - -static void git_config_check_init(struct repository *repo) -{ - if (repo->config && repo->config->hash_initialized) - return; - repo_read_config(repo); -} - -static void repo_config_clear(struct repository *repo) -{ - if (!repo->config || !repo->config->hash_initialized) - return; - git_configset_clear(repo->config); -} - -void repo_config(struct repository *repo, config_fn_t fn, void *data) -{ - git_config_check_init(repo); - configset_iter(repo->config, fn, data); -} - -int repo_config_get_value(struct repository *repo, - const char *key, const char **value) -{ - git_config_check_init(repo); - return git_configset_get_value(repo->config, key, value); -} - -const struct string_list *repo_config_get_value_multi(struct repository *repo, - const char *key) -{ - git_config_check_init(repo); - return git_configset_get_value_multi(repo->config, key); -} - -int repo_config_get_string(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; -} - -/* Functions used historically to read configuration from 'the_repository' */ -void git_config(config_fn_t fn, void *data) -{ - repo_config(the_repository, fn, data); -} - -void git_config_clear(void) -{ - repo_config_clear(the_repository); -} - -int git_config_get_value(const char *key, const char **value) -{ - return repo_config_get_value(the_repository, key, value); -} - -const struct string_list *git_config_get_value_multi(const char *key) -{ - return repo_config_get_value_multi(the_repository, key); -} - -int git_config_get_string(const 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_fsmonitor(void) -{ - if (git_config_get_pathname("core.fsmonitor", &core_fsmonitor)) - core_fsmonitor = getenv("GIT_TEST_FSMONITOR"); - - if (core_fsmonitor && !*core_fsmonitor) - core_fsmonitor = NULL; - - if (core_fsmonitor) - return 1; - - return 0; -} - -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; - - if (err) { - va_list params; - va_start(params, err); - vreportf("error: ", err, params); - va_end(params); - } - values = git_config_get_value_multi(key); - kv_info = values->items[values->nr - 1].util; - git_die_config_linenr(key, kv_info->filename, kv_info->linenr); -} - -/* - * Find all the stuff for git_config_set() below. - */ - -struct config_store_data { - size_t baselen; - char *key; - int do_not_match; - regex_t *value_regex; - 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; -}; - -static void config_store_data_clear(struct config_store_data *store) -{ - free(store->key); - if (store->value_regex != NULL && - store->value_regex != CONFIG_REGEX_NONE) { - regfree(store->value_regex); - free(store->value_regex); - } - 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->value_regex) - return 1; /* always matches */ - if (store->value_regex == CONFIG_REGEX_NONE) - return 0; /* never matches */ - - return store->do_not_match ^ - (value && !regexec(store->value_regex, value, 0, NULL, 0)); -} - -static int store_aux_event(enum config_event_t type, - size_t begin, size_t end, 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 (cf->var.len < 2 || cf->var.buf[cf->var.len - 1] != '.') - return error(_("invalid section name '%s'"), cf->var.buf); - - if (cf->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 = - cf->var.len - 1 == store->baselen && - !cmpfn(cf->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, 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 he 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); -} - -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_regex!=NULL, disregard key/value pairs where value does not match. - * if value_regex==CONFIG_REGEX_NONE, do not match any existing values - * (only add a new one) - * if multi_replace==0, nothing, or only one matching key/value is replaced, - * else all matching key/values (regardless how many) are removed, - * before the new pair is written. - * - * Returns 0 on success. - * - * This function does this: - * - * - it locks the config file by creating ".git/config.lock" - * - * - it then parses the config using store_aux() as validator to find - * the position on the key/value pair to replace. If it is to be unset, - * it must be found exactly once. - * - * - the config file is mmap()ed and the part before the match (if any) is - * written to the lock file, then the changed part and the rest. - * - * - the config file is removed and the lock file rename()d to it. - * - */ -int git_config_set_multivar_in_file_gently(const char *config_filename, - const char *key, const char *value, - const char *value_regex, - int multi_replace) -{ - int fd = -1, in_fd = -1; - int ret; - struct lock_file lock = LOCK_INIT; - char *filename_buf = NULL; - char *contents = NULL; - size_t contents_sz; - struct config_store_data store; - - memset(&store, 0, sizeof(store)); - - /* parse-key returns negative; flip the sign to feed exit(3) */ - ret = 0 - git_config_parse_key(key, &store.key, &store.baselen); - if (ret) - goto out_free; - - store.multi_replace = multi_replace; - - if (!config_filename) - config_filename = filename_buf = git_pathdup("config"); - - /* - * The lock serves a purpose in addition to locking: the new - * contents of .git/config will be written into it. - */ - fd = hold_lock_file_for_update(&lock, config_filename, 0); - if (fd < 0) { - error_errno(_("could not lock config file %s"), config_filename); - 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 == NULL) { - 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_regex == NULL) - store.value_regex = NULL; - else if (value_regex == CONFIG_REGEX_NONE) - store.value_regex = CONFIG_REGEX_NONE; - else { - if (value_regex[0] == '!') { - store.do_not_match = 1; - value_regex++; - } else - store.do_not_match = 0; - - store.value_regex = (regex_t*)xmalloc(sizeof(regex_t)); - if (regcomp(store.value_regex, value_regex, - REG_EXTENDED)) { - error(_("invalid pattern: %s"), value_regex); - FREE_AND_NULL(store.value_regex); - 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, &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 && multi_replace == 0)) { - ret = CONFIG_NOTHING_SET; - goto out_free; - } - - if (fstat(in_fd, &st) == -1) { - error_errno(_("fstat on %s failed"), config_filename); - ret = CONFIG_INVALID_FILE; - goto out_free; - } - - contents_sz = xsize_t(st.st_size); - contents = xmmap_gently(NULL, contents_sz, PROT_READ, - MAP_PRIVATE, in_fd, 0); - if (contents == MAP_FAILED) { - if (errno == ENODEV && S_ISDIR(st.st_mode)) - errno = EISDIR; - error_errno(_("unable to mmap '%s'"), config_filename); - ret = CONFIG_INVALID_FILE; - contents = NULL; - goto out_free; - } - close(in_fd); - in_fd = -1; - - if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) { - error_errno(_("chmod on %s failed"), get_lock_file_path(&lock)); - ret = CONFIG_NO_WRITE; - goto out_free; - } - - if (store.seen_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 != NULL) { - 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_regex, int multi_replace) -{ - if (!git_config_set_multivar_in_file_gently(config_filename, key, value, - value_regex, multi_replace)) - return; - if (value) - die(_("could not set '%s' to '%s'"), key, value); - else - die(_("could not unset '%s'"), key); -} - -int git_config_set_multivar_gently(const char *key, const char *value, - const char *value_regex, int multi_replace) -{ - return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex, - multi_replace); -} - -void git_config_set_multivar(const char *key, const char *value, - const char *value_regex, int multi_replace) -{ - git_config_set_multivar_in_file(NULL, key, value, value_regex, - multi_replace); -} - -static int section_name_match (const char *buf, const char *name) -{ - int i = 0, j = 0, dot = 0; - if (buf[i] != '[') - return 0; - for (i = 1; buf[i] && buf[i] != ']'; i++) { - if (!dot && isspace(buf[i])) { - dot = 1; - if (name[j++] != '.') - break; - for (i++; isspace(buf[i]); i++) - ; /* do nothing */ - if (buf[i] != '"') - break; - continue; - } - if (buf[i] == '\\' && dot) - i++; - else if (buf[i] == '"' && dot) { - for (i++; isspace(buf[i]); i++) - ; /* do_nothing */ - break; - } - if (buf[i] != name[j++]) - break; - } - if (buf[i] == ']' && name[j] == 0) { - /* - * We match, now just find the right length offset by - * gobbling up any whitespace after it, as well - */ - i++; - for (; buf[i] && isspace(buf[i]); i++) - ; /* do nothing */ - return i; - } - return 0; -} - -static int section_name_is_ok(const char *name) -{ - /* Empty section names are bogus. */ - if (!*name) - return 0; - - /* - * Before a dot, we must be alphanumeric or dash. After the first dot, - * anything goes, so we can stop checking. - */ - for (; *name && *name != '.'; name++) - if (*name != '-' && !isalnum(*name)) - return 0; - return 1; -} - -/* if new_name == NULL, the section is removed instead */ -static int git_config_copy_or_rename_section_in_file(const char *config_filename, - const char *old_name, - const char *new_name, int copy) -{ - int ret = 0, remove = 0; - char *filename_buf = NULL; - struct lock_file lock = LOCK_INIT; - int out_fd; - char buf[1024]; - FILE *config_file = NULL; - struct stat st; - struct strbuf copystr = STRBUF_INIT; - struct config_store_data store; - - 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 (fgets(buf, sizeof(buf), config_file)) { - unsigned i; - int length; - int is_section = 0; - char *output = buf; - for (i = 0; buf[i] && isspace(buf[i]); i++) - ; /* do nothing */ - if (buf[i] == '[') { - /* it's a section */ - int offset; - is_section = 1; - - /* - * When encountering a new section under -c we - * need to flush out any section we're already - * coping and begin anew. There might be - * multiple [branch "$name"] sections. - */ - if (copystr.len > 0) { - if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) { - ret = write_error(get_lock_file_path(&lock)); - goto out; - } - strbuf_reset(©str); - } - - offset = section_name_match(&buf[i], old_name); - if (offset > 0) { - ret++; - if (new_name == NULL) { - remove = 1; - continue; - } - store.baselen = strlen(new_name); - if (!copy) { - if (write_section(out_fd, new_name, &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 { - 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); - 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 *current_config_origin_type(void) -{ - int type; - if (current_config_kvi) - type = current_config_kvi->origin_type; - else if(cf) - type = cf->origin_type; - else - BUG("current_config_origin_type called outside config callback"); - - switch (type) { - case CONFIG_ORIGIN_BLOB: - return "blob"; - case CONFIG_ORIGIN_FILE: - return "file"; - case CONFIG_ORIGIN_STDIN: - return "standard input"; - case CONFIG_ORIGIN_SUBMODULE_BLOB: - return "submodule-blob"; - case CONFIG_ORIGIN_CMDLINE: - return "command line"; - default: - 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"; - } -} - -const char *current_config_name(void) -{ - const char *name; - if (current_config_kvi) - name = current_config_kvi->filename; - else if (cf) - name = cf->name; - else - BUG("current_config_name called outside config callback"); - return name ? name : ""; -} - -enum config_scope current_config_scope(void) -{ - if (current_config_kvi) - return current_config_kvi->scope; - else - return current_parsing_scope; -} - -int current_config_line(void) -{ - if (current_config_kvi) - return current_config_kvi->linenr; - else - return cf->linenr; -} - -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; -} |