diff options
Diffstat (limited to 'config.c')
| -rw-r--r-- | config.c | 319 |
1 files changed, 249 insertions, 70 deletions
@@ -12,13 +12,88 @@ #define MAXNAME (256) -static FILE *config_file; -static const char *config_file_name; -static int config_linenr; -static int config_file_eof; +typedef struct config_file { + struct config_file *prev; + FILE *f; + const char *name; + int linenr; + int eof; + struct strbuf value; + char var[MAXNAME]; +} config_file; + +static config_file *cf; + static int zlib_compression_seen; -const char *config_exclusive_filename = NULL; +#define MAX_INCLUDE_DEPTH 10 +static const char include_depth_advice[] = +"exceeded maximum include depth (%d) while including\n" +" %s\n" +"from\n" +" %s\n" +"Do you have circular includes?"; +static int handle_path_include(const char *path, struct config_include_data *inc) +{ + int ret = 0; + struct strbuf buf = STRBUF_INIT; + char *expanded = expand_user_path(path); + + 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->name) + return error("relative config includes must come from files"); + + slash = find_last_dir_sep(cf->name); + if (slash) + strbuf_add(&buf, cf->name, slash - cf->name + 1); + strbuf_addstr(&buf, path); + path = buf.buf; + } + + if (!access(path, R_OK)) { + if (++inc->depth > MAX_INCLUDE_DEPTH) + die(include_depth_advice, MAX_INCLUDE_DEPTH, path, + cf && 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; +} + +int git_config_include(const char *var, const char *value, void *data) +{ + struct config_include_data *inc = data; + const char *type; + 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; + + type = skip_prefix(var, "include."); + if (!type) + return ret; + + if (!strcmp(type, "path")) + ret = handle_path_include(value, inc); + return ret; +} static void lowercase(char *p) { @@ -39,8 +114,8 @@ void git_config_push_parameter(const char *text) strbuf_release(&env); } -static int git_config_parse_parameter(const char *text, - config_fn_t fn, void *data) +int git_config_parse_parameter(const char *text, + config_fn_t fn, void *data) { struct strbuf **pair; pair = strbuf_split_str(text, '=', 2); @@ -99,7 +174,7 @@ static int get_next_char(void) FILE *f; c = '\n'; - if ((f = config_file) != NULL) { + if (cf && ((f = cf->f) != NULL)) { c = fgetc(f); if (c == '\r') { /* DOS like systems */ @@ -110,9 +185,9 @@ static int get_next_char(void) } } if (c == '\n') - config_linenr++; + cf->linenr++; if (c == EOF) { - config_file_eof = 1; + cf->eof = 1; c = '\n'; } } @@ -121,21 +196,22 @@ static int get_next_char(void) static char *parse_value(void) { - static struct strbuf value = STRBUF_INIT; int quote = 0, comment = 0, space = 0; - strbuf_reset(&value); + strbuf_reset(&cf->value); for (;;) { int c = get_next_char(); if (c == '\n') { - if (quote) + if (quote) { + cf->linenr--; return NULL; - return value.buf; + } + return cf->value.buf; } if (comment) continue; if (isspace(c) && !quote) { - if (value.len) + if (cf->value.len) space++; continue; } @@ -146,7 +222,7 @@ static char *parse_value(void) } } for (; space; space--) - strbuf_addch(&value, ' '); + strbuf_addch(&cf->value, ' '); if (c == '\\') { c = get_next_char(); switch (c) { @@ -168,14 +244,14 @@ static char *parse_value(void) default: return NULL; } - strbuf_addch(&value, c); + strbuf_addch(&cf->value, c); continue; } if (c == '"') { quote = 1-quote; continue; } - strbuf_addch(&value, c); + strbuf_addch(&cf->value, c); } } @@ -192,7 +268,7 @@ static int get_value(config_fn_t fn, void *data, char *name, unsigned int len) /* Get the full name */ for (;;) { c = get_next_char(); - if (config_file_eof) + if (cf->eof) break; if (!iskeychar(c)) break; @@ -219,7 +295,7 @@ static int get_extended_base_var(char *name, int baselen, int c) { do { if (c == '\n') - return -1; + goto error_incomplete_line; c = get_next_char(); } while (isspace(c)); @@ -231,13 +307,13 @@ static int get_extended_base_var(char *name, int baselen, int c) for (;;) { int c = get_next_char(); if (c == '\n') - return -1; + goto error_incomplete_line; if (c == '"') break; if (c == '\\') { c = get_next_char(); if (c == '\n') - return -1; + goto error_incomplete_line; } name[baselen++] = c; if (baselen > MAXNAME / 2) @@ -248,6 +324,9 @@ static int get_extended_base_var(char *name, int baselen, int c) if (get_next_char() != ']') return -1; return baselen; +error_incomplete_line: + cf->linenr--; + return -1; } static int get_base_var(char *name) @@ -256,7 +335,7 @@ static int get_base_var(char *name) for (;;) { int c = get_next_char(); - if (config_file_eof) + if (cf->eof) return -1; if (c == ']') return baselen; @@ -274,7 +353,7 @@ static int git_parse_file(config_fn_t fn, void *data) { int comment = 0; int baselen = 0; - static char var[MAXNAME]; + char *var = cf->var; /* U+FEFF Byte Order Mark in UTF8 */ static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf"; @@ -298,7 +377,7 @@ static int git_parse_file(config_fn_t fn, void *data) } } if (c == '\n') { - if (config_file_eof) + if (cf->eof) return 0; comment = 0; continue; @@ -323,10 +402,10 @@ static int git_parse_file(config_fn_t fn, void *data) if (get_value(fn, data, var, baselen+1) < 0) break; } - die("bad config file line %d in %s", config_linenr, config_file_name); + die("bad config file line %d in %s", cf->linenr, cf->name); } -static int parse_unit_factor(const char *end, unsigned long *val) +static int parse_unit_factor(const char *end, uintmax_t *val) { if (!*end) return 1; @@ -349,11 +428,23 @@ static int git_parse_long(const char *value, long *ret) { if (value && *value) { char *end; - long val = strtol(value, &end, 0); - unsigned long factor = 1; + intmax_t val; + uintmax_t uval; + uintmax_t factor = 1; + + errno = 0; + val = strtoimax(value, &end, 0); + if (errno == ERANGE) + return 0; if (!parse_unit_factor(end, &factor)) return 0; - *ret = val * factor; + uval = abs(val); + uval *= factor; + if ((uval > maximum_signed_value_of_type(long)) || + (abs(val) > uval)) + return 0; + val *= factor; + *ret = val; return 1; } return 0; @@ -363,9 +454,19 @@ int git_parse_ulong(const char *value, unsigned long *ret) { if (value && *value) { char *end; - unsigned long val = strtoul(value, &end, 0); + uintmax_t val; + uintmax_t oldval; + + errno = 0; + val = strtoumax(value, &end, 0); + if (errno == ERANGE) + return 0; + oldval = val; if (!parse_unit_factor(end, &val)) return 0; + if ((val > maximum_unsigned_value_of_type(long)) || + (oldval > val)) + return 0; *ret = val; return 1; } @@ -374,8 +475,8 @@ int git_parse_ulong(const char *value, unsigned long *ret) static void die_bad_config(const char *name) { - if (config_file_name) - die("bad config value for '%s' in %s", name, config_file_name); + if (cf && cf->name) + die("bad config value for '%s' in %s", name, cf->name); die("bad config value for '%s'", name); } @@ -484,6 +585,9 @@ static int git_default_core_config(const char *var, const char *value) return 0; } + if (!strcmp(var, "core.attributesfile")) + return git_config_pathname(&git_attributes_file, var, value); + if (!strcmp(var, "core.bare")) { is_bare_repository_cfg = git_config_bool(var, value); return 0; @@ -543,7 +647,7 @@ static int git_default_core_config(const char *var, const char *value) if (!strcmp(var, "core.packedgitwindowsize")) { int pgsz_x2 = getpagesize() * 2; - packed_git_window_size = git_config_int(var, value); + packed_git_window_size = git_config_ulong(var, value); /* This value must be multiple of (pagesize * 2) */ packed_git_window_size /= pgsz_x2; @@ -554,21 +658,23 @@ static int git_default_core_config(const char *var, const char *value) } if (!strcmp(var, "core.bigfilethreshold")) { - long n = git_config_int(var, value); - big_file_threshold = 0 < n ? n : 0; + big_file_threshold = git_config_ulong(var, value); return 0; } if (!strcmp(var, "core.packedgitlimit")) { - packed_git_limit = git_config_int(var, value); + packed_git_limit = git_config_ulong(var, value); return 0; } if (!strcmp(var, "core.deltabasecachelimit")) { - delta_base_cache_limit = git_config_int(var, value); + delta_base_cache_limit = git_config_ulong(var, value); return 0; } + if (!strcmp(var, "core.logpackaccess")) + return git_config_string(&log_pack_access, var, value); + if (!strcmp(var, "core.autocrlf")) { if (value && !strcasecmp(value, "input")) { if (core_eol == EOL_CRLF) @@ -784,6 +890,10 @@ int git_default_config(const char *var, const char *value, void *dummy) return 0; } + if (!strcmp(var, "pack.packsizelimit")) { + pack_size_limit_cfg = git_config_ulong(var, value); + return 0; + } /* Add other config variables here and to Documentation/config.txt. */ return 0; } @@ -795,13 +905,24 @@ int git_config_from_file(config_fn_t fn, const char *filename, void *data) ret = -1; if (f) { - config_file = f; - config_file_name = filename; - config_linenr = 1; - config_file_eof = 0; + config_file top; + + /* push config-file parsing state stack */ + top.prev = cf; + top.f = f; + top.name = filename; + top.linenr = 1; + top.eof = 0; + strbuf_init(&top.value, 1024); + cf = ⊤ + ret = git_parse_file(fn, data); + + /* pop config-file parsing state stack */ + strbuf_release(&top.value); + cf = top.prev; + fclose(f); - config_file_name = NULL; } return ret; } @@ -830,9 +951,6 @@ int git_config_early(config_fn_t fn, void *data, const char *repo_config) int ret = 0, found = 0; const char *home = NULL; - /* Setting $GIT_CONFIG makes git read _only_ the given config file. */ - if (config_exclusive_filename) - return git_config_from_file(fn, config_exclusive_filename, data); if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) { ret += git_config_from_file(fn, git_etc_gitconfig(), data); @@ -841,12 +959,12 @@ int git_config_early(config_fn_t fn, void *data, const char *repo_config) home = getenv("HOME"); if (home) { - char *user_config = xstrdup(mkpath("%s/.gitconfig", home)); + char buf[PATH_MAX]; + char *user_config = mksnpath(buf, sizeof(buf), "%s/.gitconfig", home); if (!access(user_config, R_OK)) { ret += git_config_from_file(fn, user_config, data); found += 1; } - free(user_config); } if (repo_config && !access(repo_config, R_OK)) { @@ -868,10 +986,26 @@ int git_config_early(config_fn_t fn, void *data, const char *repo_config) return ret == 0 ? found : ret; } -int git_config(config_fn_t fn, void *data) +int git_config_with_options(config_fn_t fn, void *data, + const char *filename, int respect_includes) { char *repo_config = NULL; int ret; + struct config_include_data inc = CONFIG_INCLUDE_INIT; + + if (respect_includes) { + inc.fn = fn; + inc.data = data; + fn = git_config_include; + data = &inc; + } + + /* + * If we have a specific filename, use it. Otherwise, follow the + * regular lookup sequence. + */ + if (filename) + return git_config_from_file(fn, filename, data); repo_config = git_pathdup("config"); ret = git_config_early(fn, data, repo_config); @@ -880,6 +1014,11 @@ int git_config(config_fn_t fn, void *data) return ret; } +int git_config(config_fn_t fn, void *data) +{ + return git_config_with_options(fn, data, NULL, 1); +} + /* * Find all the stuff for git_config_set() below. */ @@ -909,6 +1048,7 @@ static int store_aux(const char *key, const char *value, void *cb) { const char *ep; size_t section_len; + FILE *f = cf->f; switch (store.state) { case KEY_SEEN: @@ -920,7 +1060,7 @@ static int store_aux(const char *key, const char *value, void *cb) return 1; } - store.offset[store.seen] = ftell(config_file); + store.offset[store.seen] = ftell(f); store.seen++; } break; @@ -947,19 +1087,19 @@ static int store_aux(const char *key, const char *value, void *cb) * Do not increment matches: this is no match, but we * just made sure we are in the desired section. */ - store.offset[store.seen] = ftell(config_file); + store.offset[store.seen] = ftell(f); /* fallthru */ case SECTION_END_SEEN: case START: if (matches(key, value)) { - store.offset[store.seen] = ftell(config_file); + store.offset[store.seen] = ftell(f); store.state = KEY_SEEN; store.seen++; } else { if (strrchr(key, '.') - key == store.baselen && !strncmp(key, store.key, store.baselen)) { store.state = SECTION_SEEN; - store.offset[store.seen] = ftell(config_file); + store.offset[store.seen] = ftell(f); } } } @@ -1073,6 +1213,12 @@ contline: return offset; } +int git_config_set_in_file(const char *config_filename, + const char *key, const char *value) +{ + return git_config_set_multivar_in_file(config_filename, key, value, NULL, 0); +} + int git_config_set(const char *key, const char *value) { return git_config_set_multivar(key, value, NULL, 0); @@ -1170,18 +1316,14 @@ out_free_ret_1: * - the config file is removed and the lock file rename()d to it. * */ -int git_config_set_multivar(const char *key, const char *value, - const char *value_regex, int multi_replace) +int git_config_set_multivar_in_file(const char *config_filename, + const char *key, const char *value, + const char *value_regex, int multi_replace) { int fd = -1, in_fd; int ret; - char *config_filename; struct lock_file *lock = NULL; - - if (config_exclusive_filename) - config_filename = xstrdup(config_exclusive_filename); - else - config_filename = git_pathdup("config"); + char *filename_buf = NULL; /* parse-key returns negative; flip the sign to feed exit(3) */ ret = 0 - git_config_parse_key(key, &store.key, &store.baselen); @@ -1190,6 +1332,8 @@ int git_config_set_multivar(const char *key, const char *value, 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 @@ -1359,7 +1503,7 @@ int git_config_set_multivar(const char *key, const char *value, out_free: if (lock) rollback_lock_file(lock); - free(config_filename); + free(filename_buf); return ret; write_err_out: @@ -1368,6 +1512,13 @@ write_err_out: } +int git_config_set_multivar(const char *key, const char *value, + const char *value_regex, int multi_replace) +{ + return 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; @@ -1407,19 +1558,42 @@ static int section_name_match (const char *buf, const char *name) 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 */ -int git_config_rename_section(const char *old_name, const char *new_name) +int git_config_rename_section_in_file(const char *config_filename, + const char *old_name, const char *new_name) { int ret = 0, remove = 0; - char *config_filename; - struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1); + char *filename_buf = NULL; + struct lock_file *lock; int out_fd; char buf[1024]; + FILE *config_file; + + if (new_name && !section_name_is_ok(new_name)) { + ret = error("invalid section name: %s", new_name); + goto out; + } + + if (!config_filename) + config_filename = filename_buf = git_pathdup("config"); - if (config_exclusive_filename) - config_filename = xstrdup(config_exclusive_filename); - else - config_filename = git_pathdup("config"); + lock = xcalloc(sizeof(struct lock_file), 1); 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); @@ -1483,10 +1657,15 @@ unlock_and_out: if (commit_lock_file(lock) < 0) ret = error("could not commit config file %s", config_filename); out: - free(config_filename); + free(filename_buf); return ret; } +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); +} + /* * Call this to report error for your variable that should not * get a boolean value (i.e. "[my] var" means "true"). |