| /* SPDX-License-Identifier: LGPL-2.1+ */ |
| /*** |
| This file is part of systemd. |
| |
| Copyright 2014 Lennart Poettering |
| |
| systemd is free software; you can redistribute it and/or modify it |
| under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2.1 of the License, or |
| (at your option) any later version. |
| |
| systemd is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with systemd; If not, see <http://www.gnu.org/licenses/>. |
| ***/ |
| |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <ftw.h> |
| #include <langinfo.h> |
| #include <libintl.h> |
| #include <locale.h> |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <sys/stat.h> |
| |
| #include "def.h" |
| #include "dirent-util.h" |
| #include "fd-util.h" |
| #include "hashmap.h" |
| #include "locale-util.h" |
| #include "path-util.h" |
| #include "set.h" |
| #include "string-table.h" |
| #include "string-util.h" |
| #include "strv.h" |
| #include "utf8.h" |
| |
| static int add_locales_from_archive(Set *locales) { |
| /* Stolen from glibc... */ |
| |
| struct locarhead { |
| uint32_t magic; |
| /* Serial number. */ |
| uint32_t serial; |
| /* Name hash table. */ |
| uint32_t namehash_offset; |
| uint32_t namehash_used; |
| uint32_t namehash_size; |
| /* String table. */ |
| uint32_t string_offset; |
| uint32_t string_used; |
| uint32_t string_size; |
| /* Table with locale records. */ |
| uint32_t locrectab_offset; |
| uint32_t locrectab_used; |
| uint32_t locrectab_size; |
| /* MD5 sum hash table. */ |
| uint32_t sumhash_offset; |
| uint32_t sumhash_used; |
| uint32_t sumhash_size; |
| }; |
| |
| struct namehashent { |
| /* Hash value of the name. */ |
| uint32_t hashval; |
| /* Offset of the name in the string table. */ |
| uint32_t name_offset; |
| /* Offset of the locale record. */ |
| uint32_t locrec_offset; |
| }; |
| |
| const struct locarhead *h; |
| const struct namehashent *e; |
| const void *p = MAP_FAILED; |
| _cleanup_close_ int fd = -1; |
| size_t sz = 0; |
| struct stat st; |
| unsigned i; |
| int r; |
| |
| fd = open("/usr/lib/locale/locale-archive", O_RDONLY|O_NOCTTY|O_CLOEXEC); |
| if (fd < 0) |
| return errno == ENOENT ? 0 : -errno; |
| |
| if (fstat(fd, &st) < 0) |
| return -errno; |
| |
| if (!S_ISREG(st.st_mode)) |
| return -EBADMSG; |
| |
| if (st.st_size < (off_t) sizeof(struct locarhead)) |
| return -EBADMSG; |
| |
| p = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0); |
| if (p == MAP_FAILED) |
| return -errno; |
| |
| h = (const struct locarhead *) p; |
| if (h->magic != 0xde020109 || |
| h->namehash_offset + h->namehash_size > st.st_size || |
| h->string_offset + h->string_size > st.st_size || |
| h->locrectab_offset + h->locrectab_size > st.st_size || |
| h->sumhash_offset + h->sumhash_size > st.st_size) { |
| r = -EBADMSG; |
| goto finish; |
| } |
| |
| e = (const struct namehashent*) ((const uint8_t*) p + h->namehash_offset); |
| for (i = 0; i < h->namehash_size; i++) { |
| char *z; |
| |
| if (e[i].locrec_offset == 0) |
| continue; |
| |
| if (!utf8_is_valid((char*) p + e[i].name_offset)) |
| continue; |
| |
| z = strdup((char*) p + e[i].name_offset); |
| if (!z) { |
| r = -ENOMEM; |
| goto finish; |
| } |
| |
| r = set_consume(locales, z); |
| if (r < 0) |
| goto finish; |
| } |
| |
| r = 0; |
| |
| finish: |
| if (p != MAP_FAILED) |
| munmap((void*) p, sz); |
| |
| return r; |
| } |
| |
| static int add_locales_from_libdir (Set *locales) { |
| _cleanup_closedir_ DIR *dir = NULL; |
| struct dirent *entry; |
| int r; |
| |
| dir = opendir("/usr/lib/locale"); |
| if (!dir) |
| return errno == ENOENT ? 0 : -errno; |
| |
| FOREACH_DIRENT(entry, dir, return -errno) { |
| char *z; |
| |
| dirent_ensure_type(dir, entry); |
| |
| if (entry->d_type != DT_DIR) |
| continue; |
| |
| z = strdup(entry->d_name); |
| if (!z) |
| return -ENOMEM; |
| |
| r = set_consume(locales, z); |
| if (r < 0 && r != -EEXIST) |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| int get_locales(char ***ret) { |
| _cleanup_set_free_ Set *locales = NULL; |
| _cleanup_strv_free_ char **l = NULL; |
| int r; |
| |
| locales = set_new(&string_hash_ops); |
| if (!locales) |
| return -ENOMEM; |
| |
| r = add_locales_from_archive(locales); |
| if (r < 0 && r != -ENOENT) |
| return r; |
| |
| r = add_locales_from_libdir(locales); |
| if (r < 0) |
| return r; |
| |
| l = set_get_strv(locales); |
| if (!l) |
| return -ENOMEM; |
| |
| strv_sort(l); |
| |
| *ret = l; |
| l = NULL; |
| |
| return 0; |
| } |
| |
| bool locale_is_valid(const char *name) { |
| |
| if (isempty(name)) |
| return false; |
| |
| if (strlen(name) >= 128) |
| return false; |
| |
| if (!utf8_is_valid(name)) |
| return false; |
| |
| if (!filename_is_valid(name)) |
| return false; |
| |
| if (!string_is_safe(name)) |
| return false; |
| |
| return true; |
| } |
| |
| void init_gettext(void) { |
| setlocale(LC_ALL, ""); |
| textdomain(GETTEXT_PACKAGE); |
| } |
| |
| bool is_locale_utf8(void) { |
| const char *set; |
| static int cached_answer = -1; |
| |
| /* Note that we default to 'true' here, since today UTF8 is |
| * pretty much supported everywhere. */ |
| |
| if (cached_answer >= 0) |
| goto out; |
| |
| if (!setlocale(LC_ALL, "")) { |
| cached_answer = true; |
| goto out; |
| } |
| |
| set = nl_langinfo(CODESET); |
| if (!set) { |
| cached_answer = true; |
| goto out; |
| } |
| |
| if (streq(set, "UTF-8")) { |
| cached_answer = true; |
| goto out; |
| } |
| |
| /* For LC_CTYPE=="C" return true, because CTYPE is effectly |
| * unset and everything can do to UTF-8 nowadays. */ |
| set = setlocale(LC_CTYPE, NULL); |
| if (!set) { |
| cached_answer = true; |
| goto out; |
| } |
| |
| /* Check result, but ignore the result if C was set |
| * explicitly. */ |
| cached_answer = |
| STR_IN_SET(set, "C", "POSIX") && |
| !getenv("LC_ALL") && |
| !getenv("LC_CTYPE") && |
| !getenv("LANG"); |
| |
| out: |
| return (bool) cached_answer; |
| } |
| |
| static thread_local Set *keymaps = NULL; |
| |
| static int nftw_cb( |
| const char *fpath, |
| const struct stat *sb, |
| int tflag, |
| struct FTW *ftwbuf) { |
| |
| char *p, *e; |
| int r; |
| |
| if (tflag != FTW_F) |
| return 0; |
| |
| if (!endswith(fpath, ".map") && |
| !endswith(fpath, ".map.gz")) |
| return 0; |
| |
| p = strdup(basename(fpath)); |
| if (!p) |
| return FTW_STOP; |
| |
| e = endswith(p, ".map"); |
| if (e) |
| *e = 0; |
| |
| e = endswith(p, ".map.gz"); |
| if (e) |
| *e = 0; |
| |
| r = set_consume(keymaps, p); |
| if (r < 0 && r != -EEXIST) |
| return r; |
| |
| return 0; |
| } |
| |
| int get_keymaps(char ***ret) { |
| _cleanup_strv_free_ char **l = NULL; |
| const char *dir; |
| int r; |
| |
| keymaps = set_new(&string_hash_ops); |
| if (!keymaps) |
| return -ENOMEM; |
| |
| NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) { |
| r = nftw(dir, nftw_cb, 20, FTW_MOUNT|FTW_PHYS|FTW_ACTIONRETVAL); |
| |
| if (r == FTW_STOP) |
| log_debug("Directory not found %s", dir); |
| else if (r < 0) |
| log_debug_errno(r, "Can't add keymap: %m"); |
| } |
| |
| l = set_get_strv(keymaps); |
| if (!l) { |
| set_free_free(keymaps); |
| return -ENOMEM; |
| } |
| |
| set_free(keymaps); |
| |
| if (strv_isempty(l)) |
| return -ENOENT; |
| |
| strv_sort(l); |
| |
| *ret = l; |
| l = NULL; |
| |
| return 0; |
| } |
| |
| bool keymap_is_valid(const char *name) { |
| |
| if (isempty(name)) |
| return false; |
| |
| if (strlen(name) >= 128) |
| return false; |
| |
| if (!utf8_is_valid(name)) |
| return false; |
| |
| if (!filename_is_valid(name)) |
| return false; |
| |
| if (!string_is_safe(name)) |
| return false; |
| |
| return true; |
| } |
| |
| const char *special_glyph(SpecialGlyph code) { |
| |
| static const char* const draw_table[2][_SPECIAL_GLYPH_MAX] = { |
| /* ASCII fallback */ |
| [false] = { |
| [TREE_VERTICAL] = "| ", |
| [TREE_BRANCH] = "|-", |
| [TREE_RIGHT] = "`-", |
| [TREE_SPACE] = " ", |
| [TRIANGULAR_BULLET] = ">", |
| [BLACK_CIRCLE] = "*", |
| [ARROW] = "->", |
| [MDASH] = "-", |
| }, |
| |
| /* UTF-8 */ |
| [ true ] = { |
| [TREE_VERTICAL] = "\342\224\202 ", /* │ */ |
| [TREE_BRANCH] = "\342\224\234\342\224\200", /* ├─ */ |
| [TREE_RIGHT] = "\342\224\224\342\224\200", /* └─ */ |
| [TREE_SPACE] = " ", /* */ |
| [TRIANGULAR_BULLET] = "\342\200\243", /* ‣ */ |
| [BLACK_CIRCLE] = "\342\227\217", /* ● */ |
| [ARROW] = "\342\206\222", /* → */ |
| [MDASH] = "\342\200\223", /* – */ |
| }, |
| }; |
| |
| return draw_table[is_locale_utf8()][code]; |
| } |
| |
| static const char * const locale_variable_table[_VARIABLE_LC_MAX] = { |
| [VARIABLE_LANG] = "LANG", |
| [VARIABLE_LANGUAGE] = "LANGUAGE", |
| [VARIABLE_LC_CTYPE] = "LC_CTYPE", |
| [VARIABLE_LC_NUMERIC] = "LC_NUMERIC", |
| [VARIABLE_LC_TIME] = "LC_TIME", |
| [VARIABLE_LC_COLLATE] = "LC_COLLATE", |
| [VARIABLE_LC_MONETARY] = "LC_MONETARY", |
| [VARIABLE_LC_MESSAGES] = "LC_MESSAGES", |
| [VARIABLE_LC_PAPER] = "LC_PAPER", |
| [VARIABLE_LC_NAME] = "LC_NAME", |
| [VARIABLE_LC_ADDRESS] = "LC_ADDRESS", |
| [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE", |
| [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT", |
| [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION" |
| }; |
| |
| DEFINE_STRING_TABLE_LOOKUP(locale_variable, LocaleVariable); |