/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2012 Lennart Poettering Copyright 2013 Kay Sievers 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 <locale.h> #include <stdlib.h> #include <stdbool.h> #include <unistd.h> #include <getopt.h> #include <string.h> #include <ftw.h> #include <sys/mman.h> #include <fcntl.h> #include "sd-bus.h" #include "bus-util.h" #include "bus-error.h" #include "bus-message.h" #include "util.h" #include "spawn-polkit-agent.h" #include "build.h" #include "strv.h" #include "pager.h" #include "set.h" #include "path-util.h" #include "utf8.h" #include "def.h" static bool arg_no_pager = false; static bool arg_ask_password = true; static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; static char *arg_host = NULL; static bool arg_convert = true; static void pager_open_if_enabled(void) { if (arg_no_pager) return; pager_open(false); } static void polkit_agent_open_if_enabled(void) { /* Open the polkit agent as a child process if necessary */ if (!arg_ask_password) return; if (arg_transport != BUS_TRANSPORT_LOCAL) return; polkit_agent_open(); } typedef struct StatusInfo { char **locale; const char *vconsole_keymap; const char *vconsole_keymap_toggle; const char *x11_layout; const char *x11_model; const char *x11_variant; const char *x11_options; } StatusInfo; static void print_status_info(StatusInfo *i) { assert(i); if (strv_isempty(i->locale)) puts(" System Locale: n/a\n"); else { char **j; printf(" System Locale: %s\n", i->locale[0]); STRV_FOREACH(j, i->locale + 1) printf(" %s\n", *j); } printf(" VC Keymap: %s\n", strna(i->vconsole_keymap)); if (!isempty(i->vconsole_keymap_toggle)) printf("VC Toggle Keymap: %s\n", i->vconsole_keymap_toggle); printf(" X11 Layout: %s\n", strna(i->x11_layout)); if (!isempty(i->x11_model)) printf(" X11 Model: %s\n", i->x11_model); if (!isempty(i->x11_variant)) printf(" X11 Variant: %s\n", i->x11_variant); if (!isempty(i->x11_options)) printf(" X11 Options: %s\n", i->x11_options); } static int show_status(sd_bus *bus, char **args, unsigned n) { StatusInfo info = {}; static const struct bus_properties_map map[] = { { "VConsoleKeymap", "s", NULL, offsetof(StatusInfo, vconsole_keymap) }, { "VConsoleKeymap", "s", NULL, offsetof(StatusInfo, vconsole_keymap) }, { "VConsoleKeymapToggle", "s", NULL, offsetof(StatusInfo, vconsole_keymap_toggle) }, { "X11Layout", "s", NULL, offsetof(StatusInfo, x11_layout) }, { "X11Model", "s", NULL, offsetof(StatusInfo, x11_model) }, { "X11Variant", "s", NULL, offsetof(StatusInfo, x11_variant) }, { "X11Options", "s", NULL, offsetof(StatusInfo, x11_options) }, { "Locale", "as", NULL, offsetof(StatusInfo, locale) }, {} }; int r; assert(bus); r = bus_map_all_properties(bus, "org.freedesktop.locale1", "/org/freedesktop/locale1", map, &info); if (r < 0) { log_error("Could not get properties: %s", strerror(-r)); goto fail; } print_status_info(&info); fail: strv_free(info.locale); return r; } static int set_locale(sd_bus *bus, char **args, unsigned n) { _cleanup_bus_message_unref_ sd_bus_message *m = NULL; _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; int r; assert(bus); assert(args); polkit_agent_open_if_enabled(); r = sd_bus_message_new_method_call(bus, "org.freedesktop.locale1", "/org/freedesktop/locale1", "org.freedesktop.locale1", "SetLocale", &m); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_strv(m, args + 1); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(m, "b", arg_ask_password); if (r < 0) return bus_log_create_error(r); r = sd_bus_call(bus, m, 0, &error, NULL); if (r < 0) { log_error("Failed to issue method call: %s", bus_error_message(&error, -r)); return r; } return 0; } 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) { if (errno != ENOENT) log_error("Failed to open locale archive: %m"); r = -errno; goto finish; } if (fstat(fd, &st) < 0) { log_error("fstat() failed: %m"); r = -errno; goto finish; } if (!S_ISREG(st.st_mode)) { log_error("Archive file is not regular"); r = -EBADMSG; goto finish; } if (st.st_size < (off_t) sizeof(struct locarhead)) { log_error("Archive has invalid size"); r = -EBADMSG; goto finish; } p = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0); if (p == MAP_FAILED) { log_error("Failed to map archive: %m"); r = -errno; goto finish; } 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) { log_error("Invalid archive file."); 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 = log_oom(); goto finish; } r = set_consume(locales, z); if (r < 0) { log_error("Failed to add locale: %s", strerror(-r)); 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; struct dirent *entry; int r; dir = opendir("/usr/lib/locale"); if (!dir) { log_error("Failed to open locale directory: %m"); return -errno; } errno = 0; while ((entry = readdir(dir))) { char *z; if (entry->d_type != DT_DIR) continue; if (ignore_file(entry->d_name)) continue; z = strdup(entry->d_name); if (!z) return log_oom(); r = set_consume(locales, z); if (r < 0 && r != -EEXIST) { log_error("Failed to add locale: %s", strerror(-r)); return r; } errno = 0; } if (errno > 0) { log_error("Failed to read locale directory: %m"); return -errno; } return 0; } static int list_locales(sd_bus *bus, char **args, unsigned n) { _cleanup_set_free_ Set *locales; _cleanup_strv_free_ char **l = NULL; int r; locales = set_new(string_hash_func, string_compare_func); if (!locales) return log_oom(); 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 log_oom(); strv_sort(l); pager_open_if_enabled(); strv_print(l); return 0; } static int set_vconsole_keymap(sd_bus *bus, char **args, unsigned n) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; const char *map, *toggle_map; int r; assert(bus); assert(args); if (n > 3) { log_error("Too many arguments."); return -EINVAL; } polkit_agent_open_if_enabled(); map = args[1]; toggle_map = n > 2 ? args[2] : ""; r = sd_bus_call_method( bus, "org.freedesktop.locale1", "/org/freedesktop/locale1", "org.freedesktop.locale1", "SetVConsoleKeyboard", &error, NULL, "ssbb", map, toggle_map, arg_convert, arg_ask_password); if (r < 0) log_error("Failed to set keymap: %s", bus_error_message(&error, -r)); return r; } static 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 log_oom(); 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) { log_error("Can't add keymap: %s", strerror(-r)); return r; } return 0; } static int list_vconsole_keymaps(sd_bus *bus, char **args, unsigned n) { _cleanup_strv_free_ char **l = NULL; const char *dir; keymaps = set_new(string_hash_func, string_compare_func); if (!keymaps) return log_oom(); NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) nftw(dir, nftw_cb, 20, FTW_MOUNT|FTW_PHYS); l = set_get_strv(keymaps); if (!l) { set_free_free(keymaps); return log_oom(); } set_free(keymaps); if (strv_isempty(l)) { log_error("Couldn't find any console keymaps."); return -ENOENT; } strv_sort(l); pager_open_if_enabled(); strv_print(l); return 0; } static int set_x11_keymap(sd_bus *bus, char **args, unsigned n) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; const char *layout, *model, *variant, *options; int r; assert(bus); assert(args); if (n > 5) { log_error("Too many arguments."); return -EINVAL; } polkit_agent_open_if_enabled(); layout = args[1]; model = n > 2 ? args[2] : ""; variant = n > 3 ? args[3] : ""; options = n > 4 ? args[4] : ""; r = sd_bus_call_method( bus, "org.freedesktop.locale1", "/org/freedesktop/locale1", "org.freedesktop.locale1", "SetX11Keyboard", &error, NULL, "ssssbb", layout, model, variant, options, arg_convert, arg_ask_password); if (r < 0) log_error("Failed to set keymap: %s", bus_error_message(&error, -r)); return r; } static int list_x11_keymaps(sd_bus *bus, char **args, unsigned n) { _cleanup_fclose_ FILE *f = NULL; _cleanup_strv_free_ char **list = NULL; char line[LINE_MAX]; enum { NONE, MODELS, LAYOUTS, VARIANTS, OPTIONS } state = NONE, look_for; int r; if (n > 2) { log_error("Too many arguments."); return -EINVAL; } f = fopen("/usr/share/X11/xkb/rules/base.lst", "re"); if (!f) { log_error("Failed to open keyboard mapping list. %m"); return -errno; } if (streq(args[0], "list-x11-keymap-models")) look_for = MODELS; else if (streq(args[0], "list-x11-keymap-layouts")) look_for = LAYOUTS; else if (streq(args[0], "list-x11-keymap-variants")) look_for = VARIANTS; else if (streq(args[0], "list-x11-keymap-options")) look_for = OPTIONS; else assert_not_reached("Wrong parameter"); FOREACH_LINE(line, f, break) { char *l, *w; l = strstrip(line); if (isempty(l)) continue; if (l[0] == '!') { if (startswith(l, "! model")) state = MODELS; else if (startswith(l, "! layout")) state = LAYOUTS; else if (startswith(l, "! variant")) state = VARIANTS; else if (startswith(l, "! option")) state = OPTIONS; else state = NONE; continue; } if (state != look_for) continue; w = l + strcspn(l, WHITESPACE); if (n > 1) { char *e; if (*w == 0) continue; *w = 0; w++; w += strspn(w, WHITESPACE); e = strchr(w, ':'); if (!e) continue; *e = 0; if (!streq(w, args[1])) continue; } else *w = 0; r = strv_extend(&list, l); if (r < 0) return log_oom(); } if (strv_isempty(list)) { log_error("Couldn't find any entries."); return -ENOENT; } strv_sort(list); strv_uniq(list); pager_open_if_enabled(); strv_print(list); return 0; } static int help(void) { printf("%s [OPTIONS...] COMMAND ...\n\n" "Query or change system locale and keyboard settings.\n\n" " -h --help Show this help\n" " --version Show package version\n" " --no-pager Do not pipe output into a pager\n" " --no-ask-password Do not prompt for password\n" " -H --host=[USER@]HOST Operate on remote host\n" " -M --machine=CONTAINER Operate on local container\n" " --no-convert Don't convert keyboard mappings\n\n" "Commands:\n" " status Show current locale settings\n" " set-locale LOCALE... Set system locale\n" " list-locales Show known locales\n" " set-keymap MAP [MAP] Set virtual console keyboard mapping\n" " list-keymaps Show known virtual console keyboard mappings\n" " set-x11-keymap LAYOUT [MODEL] [VARIANT] [OPTIONS]\n" " Set X11 keyboard mapping\n" " list-x11-keymap-models Show known X11 keyboard mapping models\n" " list-x11-keymap-layouts Show known X11 keyboard mapping layouts\n" " list-x11-keymap-variants [LAYOUT]\n" " Show known X11 keyboard mapping variants\n" " list-x11-keymap-options Show known X11 keyboard mapping options\n", program_invocation_short_name); return 0; } static int parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, ARG_NO_PAGER, ARG_NO_CONVERT, ARG_NO_ASK_PASSWORD }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "no-pager", no_argument, NULL, ARG_NO_PAGER }, { "host", required_argument, NULL, 'H' }, { "machine", required_argument, NULL, 'M' }, { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, { "no-convert", no_argument, NULL, ARG_NO_CONVERT }, {} }; int c; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0) { switch (c) { case 'h': return help(); case ARG_VERSION: puts(PACKAGE_STRING); puts(SYSTEMD_FEATURES); return 0; case ARG_NO_CONVERT: arg_convert = false; break; case ARG_NO_PAGER: arg_no_pager = true; break; case ARG_NO_ASK_PASSWORD: arg_ask_password = false; break; case 'H': arg_transport = BUS_TRANSPORT_REMOTE; arg_host = optarg; break; case 'M': arg_transport = BUS_TRANSPORT_CONTAINER; arg_host = optarg; break; case '?': return -EINVAL; default: assert_not_reached("Unhandled option"); } } return 1; } static int localectl_main(sd_bus *bus, int argc, char *argv[]) { static const struct { const char* verb; const enum { MORE, LESS, EQUAL } argc_cmp; const int argc; int (* const dispatch)(sd_bus *bus, char **args, unsigned n); } verbs[] = { { "status", LESS, 1, show_status }, { "set-locale", MORE, 2, set_locale }, { "list-locales", EQUAL, 1, list_locales }, { "set-keymap", MORE, 2, set_vconsole_keymap }, { "list-keymaps", EQUAL, 1, list_vconsole_keymaps }, { "set-x11-keymap", MORE, 2, set_x11_keymap }, { "list-x11-keymap-models", EQUAL, 1, list_x11_keymaps }, { "list-x11-keymap-layouts", EQUAL, 1, list_x11_keymaps }, { "list-x11-keymap-variants", LESS, 2, list_x11_keymaps }, { "list-x11-keymap-options", EQUAL, 1, list_x11_keymaps }, }; int left; unsigned i; assert(argc >= 0); assert(argv); left = argc - optind; if (left <= 0) /* Special rule: no arguments means "status" */ i = 0; else { if (streq(argv[optind], "help")) { help(); return 0; } for (i = 0; i < ELEMENTSOF(verbs); i++) if (streq(argv[optind], verbs[i].verb)) break; if (i >= ELEMENTSOF(verbs)) { log_error("Unknown operation %s", argv[optind]); return -EINVAL; } } switch (verbs[i].argc_cmp) { case EQUAL: if (left != verbs[i].argc) { log_error("Invalid number of arguments."); return -EINVAL; } break; case MORE: if (left < verbs[i].argc) { log_error("Too few arguments."); return -EINVAL; } break; case LESS: if (left > verbs[i].argc) { log_error("Too many arguments."); return -EINVAL; } break; default: assert_not_reached("Unknown comparison operator."); } return verbs[i].dispatch(bus, argv + optind, left); } int main(int argc, char*argv[]) { _cleanup_bus_unref_ sd_bus *bus = NULL; int r; setlocale(LC_ALL, ""); log_parse_environment(); log_open(); r = parse_argv(argc, argv); if (r <= 0) goto finish; r = bus_open_transport(arg_transport, arg_host, false, &bus); if (r < 0) { log_error("Failed to create bus connection: %s", strerror(-r)); goto finish; } r = localectl_main(bus, argc, argv); finish: pager_close(); return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; }