diff options
Diffstat (limited to 'third_party/git/config.c')
| -rw-r--r-- | third_party/git/config.c | 3353 |
1 files changed, 3353 insertions, 0 deletions
diff --git a/third_party/git/config.c b/third_party/git/config.c new file mode 100644 index 0000000000..3900e4947b --- /dev/null +++ b/third_party/git/config.c @@ -0,0 +1,3353 @@ +/* + * 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; + 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_insert(pat, 0, "**/", 3); + + 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 || !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; + int cond_len; + int ret; + + /* + * Pass along all values, including "include" directives; this makes it + * possible to query information on the includes themselves. + */ + ret = inc->fn(var, value, inc->data); + if (ret < 0) + return ret; + + if (!strcmp(var, "include.path")) + ret = handle_path_include(value, inc); + + if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) && + (cond && include_condition_is_true(inc->opts, cond, cond_len)) && + !strcmp(key, "path")) + ret = handle_path_include(value, inc); + + return ret; +} + +void git_config_push_parameter(const char *text) +{ + struct strbuf env = STRBUF_INIT; + const char *old = getenv(CONFIG_DATA_ENVIRONMENT); + if (old && *old) { + strbuf_addstr(&env, old); + strbuf_addch(&env, ' '); + } + sq_quote_buf(&env, text); + setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1); + strbuf_release(&env); +} + +static inline int iskeychar(int c) +{ + return isalnum(c) || c == '-'; +} + +/* + * Auxiliary function to sanity-check and split the key into the section + * identifier and variable name. + * + * Returns 0 on success, -1 when there is an invalid character in the key and + * -2 if there is no section name in the key. + * + * store_key - pointer to char* which will hold a copy of the key with + * lowercase section and variable name + * baselen - pointer to int which will hold the length of the + * section + subsection part, can be NULL + */ +static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet) +{ + int i, dot, baselen; + const char *last_dot = strrchr(key, '.'); + + /* + * Since "key" actually contains the section name and the real + * key name separated by a dot, we have to know where the dot is. + */ + + if (last_dot == NULL || last_dot == key) { + if (!quiet) + error(_("key does not contain a section: %s"), key); + return -CONFIG_NO_SECTION_OR_NAME; + } + + if (!last_dot[1]) { + if (!quiet) + error(_("key does not contain variable name: %s"), key); + return -CONFIG_NO_SECTION_OR_NAME; + } + + baselen = last_dot - key; + if (baselen_) + *baselen_ = baselen; + + /* + * Validate the key and while at it, lower case it for matching. + */ + if (store_key) + *store_key = xmallocz(strlen(key)); + + dot = 0; + for (i = 0; key[i]; i++) { + unsigned char c = key[i]; + if (c == '.') + dot = 1; + /* Leave the extended basename untouched.. */ + if (!dot || i > baselen) { + if (!iskeychar(c) || + (i == baselen + 1 && !isalpha(c))) { + if (!quiet) + error(_("invalid key: %s"), key); + goto out_free_ret_1; + } + c = tolower(c); + } else if (c == '\n') { + if (!quiet) + error(_("invalid key (newline): %s"), key); + goto out_free_ret_1; + } + if (store_key) + (*store_key)[i] = c; + } + + return 0; + +out_free_ret_1: + if (store_key) { + FREE_AND_NULL(*store_key); + } + return -CONFIG_INVALID_KEY; +} + +int git_config_parse_key(const char *key, char **store_key, int *baselen) +{ + return git_config_parse_key_1(key, store_key, baselen, 0); +} + +int git_config_key_is_valid(const char *key) +{ + return !git_config_parse_key_1(key, NULL, NULL, 1); +} + +int git_config_parse_parameter(const char *text, + config_fn_t fn, void *data) +{ + const char *value; + char *canonical_name; + struct strbuf **pair; + int ret; + + pair = strbuf_split_str(text, '=', 2); + if (!pair[0]) + return error(_("bogus config parameter: %s"), text); + + if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') { + strbuf_setlen(pair[0], pair[0]->len - 1); + value = pair[1] ? pair[1]->buf : ""; + } else { + value = NULL; + } + + strbuf_trim(pair[0]); + if (!pair[0]->len) { + strbuf_list_free(pair); + return error(_("bogus config parameter: %s"), text); + } + + if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) { + ret = -1; + } else { + ret = (fn(canonical_name, value, data) < 0) ? -1 : 0; + free(canonical_name); + } + strbuf_list_free(pair); + return ret; +} + +int git_config_from_parameters(config_fn_t fn, void *data) +{ + const char *env = getenv(CONFIG_DATA_ENVIRONMENT); + int ret = 0; + char *envw; + const char **argv = NULL; + int nr = 0, alloc = 0; + int i; + struct config_source source; + + if (!env) + return 0; + + memset(&source, 0, sizeof(source)); + source.prev = cf; + source.origin_type = CONFIG_ORIGIN_CMDLINE; + cf = &source; + + /* sq_dequote will write over it */ + envw = xstrdup(env); + + if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) { + ret = error(_("bogus format in %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 == '\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; + int baselen = 0; + struct strbuf *var = &cf->var; + int error_return = 0; + char *error_msg = NULL; + + /* U+FEFF Byte Order Mark in UTF8 */ + const char *bomptr = utf8_bom; + + /* For 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 > 40) + return error(_("abbrev length out of range: %d"), abbrev); + default_abbrev = abbrev; + } + return 0; + } + + if (!strcmp(var, "core.disambiguate")) + return set_disambiguate_hint_config(var, value); + + if (!strcmp(var, "core.loosecompression")) { + int level = git_config_int(var, value); + if (level == -1) + level = Z_DEFAULT_COMPRESSION; + else if (level < 0 || level > Z_BEST_COMPRESSION) + die(_("bad zlib compression level %d"), level); + zlib_compression_level = level; + zlib_compression_seen = 1; + return 0; + } + + if (!strcmp(var, "core.compression")) { + int level = git_config_int(var, value); + if (level == -1) + level = Z_DEFAULT_COMPRESSION; + else if (level < 0 || level > Z_BEST_COMPRESSION) + die(_("bad zlib compression level %d"), level); + core_compression_level = level; + core_compression_seen = 1; + if (!zlib_compression_seen) + zlib_compression_level = level; + if (!pack_compression_seen) + pack_compression_level = level; + return 0; + } + + if (!strcmp(var, "core.packedgitwindowsize")) { + int pgsz_x2 = getpagesize() * 2; + packed_git_window_size = git_config_ulong(var, value); + + /* This value must be multiple of (pagesize * 2) */ + packed_git_window_size /= pgsz_x2; + if (packed_git_window_size < 1) + packed_git_window_size = 1; + packed_git_window_size *= pgsz_x2; + return 0; + } + + if (!strcmp(var, "core.bigfilethreshold")) { + big_file_threshold = git_config_ulong(var, value); + return 0; + } + + if (!strcmp(var, "core.packedgitlimit")) { + packed_git_limit = git_config_ulong(var, value); + return 0; + } + + if (!strcmp(var, "core.deltabasecachelimit")) { + delta_base_cache_limit = git_config_ulong(var, value); + return 0; + } + + if (!strcmp(var, "core.autocrlf")) { + if (value && !strcasecmp(value, "input")) { + auto_crlf = AUTO_CRLF_INPUT; + return 0; + } + auto_crlf = git_config_bool(var, value); + return 0; + } + + if (!strcmp(var, "core.safecrlf")) { + int eol_rndtrp_die; + if (value && !strcasecmp(value, "warn")) { + global_conv_flags_eol = CONV_EOL_RNDTRP_WARN; + return 0; + } + eol_rndtrp_die = git_config_bool(var, value); + global_conv_flags_eol = eol_rndtrp_die ? + CONV_EOL_RNDTRP_DIE : 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.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.partialclonefilter")) { + return git_config_string(&core_partial_clone_filter_default, + var, value); + } + + 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; + 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; + + 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_REPO; + if (!opts->ignore_repo && repo_config && + !access_or_die(repo_config, R_OK, 0)) + ret += git_config_from_file(fn, repo_config, data); + + /* + * Note: this should have a new scope, CONFIG_SCOPE_WORKTREE. + * But let's not complicate things before it's actually needed. + */ + 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_CMDLINE; + if (!opts->ignore_cmdline && git_config_from_parameters(fn, data) < 0) + die(_("unable to parse command-line config")); + + current_parsing_scope = CONFIG_SCOPE_UNKNOWN; + free(xdg_config); + free(user_config); + free(repo_config); + return ret; +} + +int config_with_options(config_fn_t fn, void *data, + struct git_config_source *config_source, + const struct config_options *opts) +{ + struct config_include_data inc = CONFIG_INCLUDE_INIT; + + if (opts->respect_includes) { + inc.fn = fn; + inc.data = data; + inc.opts = opts; + fn = git_config_include; + data = &inc; + } + + /* + * If we have a specific filename, use it. Otherwise, follow the + * regular lookup sequence. + */ + if (config_source && config_source->use_stdin) + return git_config_from_stdin(fn, data); + else if (config_source && config_source->file) + return git_config_from_file(fn, config_source->file, data); + else if (config_source && config_source->blob) + return git_config_from_blob_ref(fn, config_source->blob, data); + + return do_git_config_sequence(opts, fn, data); +} + +static void configset_iter(struct config_set *cs, config_fn_t fn, void *data) +{ + int i, value_index; + struct string_list *values; + struct config_set_element *entry; + struct configset_list *list = &cs->list; + + for (i = 0; i < list->nr; i++) { + entry = list->items[i].e; + value_index = list->items[i].value_index; + values = &entry->value_list; + + current_config_kvi = values->items[value_index].util; + + if (fn(entry->key, values->items[value_index].string, data) < 0) + git_die_config_linenr(entry->key, + current_config_kvi->filename, + current_config_kvi->linenr); + + current_config_kvi = NULL; + } +} + +void read_early_config(config_fn_t cb, void *data) +{ + struct config_options opts = {0}; + struct strbuf commondir = STRBUF_INIT; + struct strbuf gitdir = STRBUF_INIT; + + opts.respect_includes = 1; + + if (have_git_dir()) { + opts.commondir = get_git_common_dir(); + opts.git_dir = get_git_dir(); + /* + * When setup_git_directory() was not yet asked to discover the + * GIT_DIR, we ask discover_git_directory() to figure out whether there + * is any repository config we should use (but unlike + * setup_git_directory_gently(), no global state is changed, most + * notably, the current working directory is still the same after the + * call). + */ + } else if (!discover_git_directory(&commondir, &gitdir)) { + opts.commondir = commondir.buf; + opts.git_dir = gitdir.buf; + } + + config_with_options(cb, data, NULL, &opts); + + strbuf_release(&commondir); + strbuf_release(&gitdir); +} + +/* + * 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, strhash(normalized_key)); + k.key = normalized_key; + found_entry = hashmap_get(&cs->config_hash, &k, NULL); + free(normalized_key); + return found_entry; +} + +static int configset_add_value(struct config_set *cs, const char *key, const char *value) +{ + struct config_set_element *e; + struct string_list_item *si; + struct configset_list_item *l_item; + struct key_value_info *kv_info = xmalloc(sizeof(*kv_info)); + + e = configset_find_element(cs, key); + /* + * Since the keys are being fed by git_config*() callback mechanism, they + * are already normalized. So simply add them without any further munging. + */ + if (!e) { + e = xmalloc(sizeof(*e)); + hashmap_entry_init(e, strhash(key)); + e->key = xstrdup(key); + string_list_init(&e->value_list, 1); + hashmap_add(&cs->config_hash, e); + } + si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value)); + + ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc); + l_item = &cs->list.items[cs->list.nr++]; + l_item->e = e; + l_item->value_index = e->value_list.nr - 1; + + if (!cf) + BUG("configset_add_value has no source"); + if (cf->name) { + kv_info->filename = strintern(cf->name); + kv_info->linenr = cf->linenr; + kv_info->origin_type = cf->origin_type; + } else { + /* for values read from `git_config_from_parameters()` */ + kv_info->filename = NULL; + kv_info->linenr = -1; + kv_info->origin_type = CONFIG_ORIGIN_CMDLINE; + } + kv_info->scope = current_parsing_scope; + si->util = kv_info; + + return 0; +} + +static int config_set_element_cmp(const void *unused_cmp_data, + const void *entry, + const void *entry_or_key, + const void *unused_keydata) +{ + const struct config_set_element *e1 = entry; + const struct config_set_element *e2 = entry_or_key; + + return strcmp(e1->key, e2->key); +} + +void git_configset_init(struct config_set *cs) +{ + hashmap_init(&cs->config_hash, config_set_element_cmp, NULL, 0); + cs->hash_initialized = 1; + cs->list.nr = 0; + cs->list.alloc = 0; + cs->list.items = NULL; +} + +void git_configset_clear(struct config_set *cs) +{ + struct config_set_element *entry; + struct hashmap_iter iter; + if (!cs->hash_initialized) + return; + + hashmap_iter_init(&cs->config_hash, &iter); + while ((entry = hashmap_iter_next(&iter))) { + free(entry->key); + string_list_clear(&entry->value_list, 1); + } + hashmap_free(&cs->config_hash, 1); + cs->hash_initialized = 0; + free(cs->list.items); + cs->list.nr = 0; + cs->list.alloc = 0; + cs->list.items = NULL; +} + +static int config_set_callback(const char *key, const char *value, void *cb) +{ + struct config_set *cs = cb; + configset_add_value(cs, key, value); + return 0; +} + +int git_configset_add_file(struct config_set *cs, const char *filename) +{ + return git_config_from_file(config_set_callback, filename, cs); +} + +int git_configset_get_value(struct config_set *cs, const char *key, const char **value) +{ + const struct string_list *values = NULL; + /* + * Follows "last one wins" semantic, i.e., if there are multiple matches for the + * queried key in the files of the configset, the value returned will be the last + * value in the value list for that key. + */ + values = git_configset_get_value_multi(cs, key); + + if (!values) + return 1; + assert(values->nr > 0); + *value = values->items[values->nr - 1].string; + return 0; +} + +const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key) +{ + struct config_set_element *e = configset_find_element(cs, key); + return e ? &e->value_list : NULL; +} + +int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest) +{ + const char *value; + if (!git_configset_get_value(cs, key, &value)) + return git_config_string(dest, key, value); + else + return 1; +} + +int git_configset_get_string(struct config_set *cs, const char *key, char **dest) +{ + return git_configset_get_string_const(cs, key, (const char **)dest); +} + +int git_configset_get_int(struct config_set *cs, const char *key, int *dest) +{ + const char *value; + if (!git_configset_get_value(cs, key, &value)) { + *dest = git_config_int(key, value); + return 0; + } else + return 1; +} + +int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest) +{ + const char *value; + if (!git_configset_get_value(cs, key, &value)) { + *dest = git_config_ulong(key, value); + return 0; + } else + return 1; +} + +int git_configset_get_bool(struct config_set *cs, const char *key, int *dest) +{ + const char *value; + if (!git_configset_get_value(cs, key, &value)) { + *dest = git_config_bool(key, value); + return 0; + } else + return 1; +} + +int git_configset_get_bool_or_int(struct config_set *cs, const char *key, + int *is_bool, int *dest) +{ + const char *value; + if (!git_configset_get_value(cs, key, &value)) { + *dest = git_config_bool_or_int(key, value, is_bool); + return 0; + } else + return 1; +} + +int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest) +{ + const char *value; + if (!git_configset_get_value(cs, key, &value)) { + *dest = git_parse_maybe_bool(value); + if (*dest == -1) + return -1; + return 0; + } else + return 1; +} + +int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest) +{ + const char *value; + if (!git_configset_get_value(cs, key, &value)) + return git_config_pathname(dest, key, value); + else + return 1; +} + +/* Functions use to read configuration from a repository */ +static void repo_read_config(struct repository *repo) +{ + struct config_options opts = { 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_const(struct repository *repo, + const char *key, const char **dest) +{ + int ret; + git_config_check_init(repo); + ret = git_configset_get_string_const(repo->config, key, dest); + if (ret < 0) + git_die_config(key, NULL); + return ret; +} + +int repo_config_get_string(struct repository *repo, + const char *key, char **dest) +{ + git_config_check_init(repo); + return repo_config_get_string_const(repo, key, (const char **)dest); +} + +int repo_config_get_int(struct repository *repo, + const char *key, int *dest) +{ + git_config_check_init(repo); + return git_configset_get_int(repo->config, key, dest); +} + +int repo_config_get_ulong(struct repository *repo, + const char *key, unsigned long *dest) +{ + git_config_check_init(repo); + return git_configset_get_ulong(repo->config, key, dest); +} + +int repo_config_get_bool(struct repository *repo, + const char *key, int *dest) +{ + git_config_check_init(repo); + return git_configset_get_bool(repo->config, key, dest); +} + +int repo_config_get_bool_or_int(struct repository *repo, + const char *key, int *is_bool, int *dest) +{ + git_config_check_init(repo); + return git_configset_get_bool_or_int(repo->config, key, is_bool, dest); +} + +int repo_config_get_maybe_bool(struct repository *repo, + const char *key, int *dest) +{ + git_config_check_init(repo); + return git_configset_get_maybe_bool(repo->config, key, dest); +} + +int repo_config_get_pathname(struct repository *repo, + const char *key, const char **dest) +{ + int ret; + git_config_check_init(repo); + ret = git_configset_get_pathname(repo->config, key, dest); + if (ret < 0) + git_die_config(key, NULL); + return ret; +} + +/* Functions used historically to read configuration from 'the_repository' */ +void git_config(config_fn_t fn, void *data) +{ + repo_config(the_repository, fn, data); +} + +void git_config_clear(void) +{ + repo_config_clear(the_repository); +} + +int git_config_get_value(const char *key, const char **value) +{ + return repo_config_get_value(the_repository, key, value); +} + +const struct string_list *git_config_get_value_multi(const char *key) +{ + return repo_config_get_value_multi(the_repository, key); +} + +int git_config_get_string_const(const char *key, const char **dest) +{ + return repo_config_get_string_const(the_repository, key, dest); +} + +int git_config_get_string(const char *key, char **dest) +{ + return repo_config_get_string(the_repository, key, dest); +} + +int git_config_get_int(const char *key, int *dest) +{ + return repo_config_get_int(the_repository, key, dest); +} + +int git_config_get_ulong(const char *key, unsigned long *dest) +{ + return repo_config_get_ulong(the_repository, key, dest); +} + +int git_config_get_bool(const char *key, int *dest) +{ + return repo_config_get_bool(the_repository, key, dest); +} + +int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest) +{ + return repo_config_get_bool_or_int(the_repository, key, is_bool, dest); +} + +int git_config_get_maybe_bool(const char *key, int *dest) +{ + return repo_config_get_maybe_bool(the_repository, key, dest); +} + +int git_config_get_pathname(const char *key, const char **dest) +{ + return repo_config_get_pathname(the_repository, key, dest); +} + +int git_config_get_expiry(const char *key, const char **output) +{ + int ret = git_config_get_string_const(key, output); + if (ret) + return ret; + if (strcmp(*output, "now")) { + timestamp_t now = approxidate("now"); + if (approxidate(*output) >= now) + git_die_config(key, _("Invalid %s: '%s'"), key, *output); + } + return ret; +} + +int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestamp_t now) +{ + char *expiry_string; + intmax_t days; + timestamp_t when; + + if (git_config_get_string(key, &expiry_string)) + return 1; /* no such thing */ + + if (git_parse_signed(expiry_string, &days, maximum_signed_value_of_type(int))) { + const int scale = 86400; + *expiry = now - days * scale; + return 0; + } + + if (!parse_expiry_date(expiry_string, &when)) { + *expiry = when; + return 0; + } + return -1; /* thing exists but cannot be parsed */ +} + +int git_config_get_untracked_cache(void) +{ + int val = -1; + const char *v; + + /* Hack for test programs like test-dump-untracked-cache */ + if (ignore_untracked_cache_config) + return -1; + + if (!git_config_get_maybe_bool("core.untrackedcache", &val)) + return val; + + if (!git_config_get_value("core.untrackedcache", &v)) { + if (!strcasecmp(v, "keep")) + return -1; + + error(_("unknown core.untrackedCache value '%s'; " + "using 'keep' default value"), v); + return -1; + } + + return -1; /* default value */ +} + +int git_config_get_split_index(void) +{ + int val; + + if (!git_config_get_maybe_bool("core.splitindex", &val)) + return val; + + return -1; /* default value */ +} + +int git_config_get_max_percent_split_change(void) +{ + int val = -1; + + if (!git_config_get_int("splitindex.maxpercentchange", &val)) { + if (0 <= val && val <= 100) + return val; + + return error(_("splitIndex.maxPercentChange value '%d' " + "should be between 0 and 100"), val); + } + + return -1; /* default value */ +} + +int git_config_get_fsmonitor(void) +{ + if (git_config_get_pathname("core.fsmonitor", &core_fsmonitor)) + core_fsmonitor = getenv("GIT_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 { + int 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; + int i; + struct strbuf sb = STRBUF_INIT; + + dot = memchr(key, '.', store->baselen); + if (dot) { + strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key); + for (i = dot - key + 1; i < store->baselen; i++) { + if (key[i] == '"' || key[i] == '\\') + strbuf_addch(&sb, '\\'); + strbuf_addch(&sb, key[i]); + } + strbuf_addstr(&sb, "\"]\n"); + } else { + strbuf_addf(&sb, "[%.*s]\n", store->baselen, key); + } + + return sb; +} + +static ssize_t write_section(int fd, const char *key, + 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; + int length = strlen(key + store->baselen + 1); + const char *quote = ""; + struct strbuf sb = STRBUF_INIT; + + /* + * Check to see if the value needs to be surrounded with a dq pair. + * Note that problematic characters are always backslash-quoted; this + * check is about not losing leading or trailing SP and strings that + * follow beginning-of-comment characters (i.e. ';' and '#') by the + * configuration parser. + */ + if (value[0] == ' ') + quote = "\""; + for (i = 0; value[i]; i++) + if (value[i] == ';' || value[i] == '#') + quote = "\""; + if (i && value[i - 1] == ' ') + quote = "\""; + + strbuf_addf(&sb, "\t%.*s = %s", + length, key + store->baselen + 1, quote); + + for (i = 0; value[i]; i++) + switch (value[i]) { + case '\n': + strbuf_addstr(&sb, "\\n"); + break; + case '\t': + strbuf_addstr(&sb, "\\t"); + break; + case '"': + case '\\': + strbuf_addch(&sb, '\\'); + /* fallthrough */ + default: + strbuf_addch(&sb, value[i]); + break; + } + strbuf_addf(&sb, "%s\n", quote); + + ret = write_in_full(fd, sb.buf, sb.len); + strbuf_release(&sb); + + return ret; +} + +/* + * 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)) { + int i; + int length; + int is_section = 0; + char *output = buf; + for (i = 0; buf[i] && isspace(buf[i]); i++) + ; /* do nothing */ + if (buf[i] == '[') { + /* it's a section */ + int offset; + is_section = 1; + + /* + * When encountering a new section under -c we + * need to flush out any section we're already + * coping and begin anew. There might be + * multiple [branch "$name"] sections. + */ + if (copystr.len > 0) { + if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) { + ret = write_error(get_lock_file_path(&lock)); + goto out; + } + strbuf_reset(©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, int *subsection_len, + const char **key) +{ + const char *dot; + + /* Does it start with "section." ? */ + if (!skip_prefix(var, section, &var) || *var != '.') + return -1; + + /* + * Find the key; we don't know yet if we have a subsection, but we must + * parse backwards from the end, since the subsection may have dots in + * it, too. + */ + dot = strrchr(var, '.'); + *key = dot + 1; + + /* Did we have a subsection at all? */ + if (dot == var) { + if (subsection) { + *subsection = NULL; + *subsection_len = 0; + } + } + else { + if (!subsection) + return -1; + *subsection = var + 1; + *subsection_len = dot - *subsection; + } + + return 0; +} + +const char *current_config_origin_type(void) +{ + int type; + if (current_config_kvi) + type = current_config_kvi->origin_type; + else if(cf) + type = cf->origin_type; + else + 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 *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 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; +} |