1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2012 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
32 #include "dbus-common.h"
34 #include "spawn-polkit-agent.h"
39 #include "path-util.h"
41 static bool arg_no_pager = false;
42 static enum transport {
46 } arg_transport = TRANSPORT_NORMAL;
47 static bool arg_ask_password = true;
48 static const char *arg_host = NULL;
49 static bool arg_convert = true;
51 static void pager_open_if_enabled(void) {
59 static void polkit_agent_open_if_enabled(void) {
61 /* Open the polkit agent as a child process if necessary */
63 if (!arg_ask_password)
69 typedef struct StatusInfo {
71 const char *vconsole_keymap;
72 const char *vconsole_keymap_toggle;
73 const char *x11_layout;
74 const char *x11_model;
75 const char *x11_variant;
76 const char *x11_options;
79 static void print_status_info(StatusInfo *i) {
82 if (strv_isempty(i->locale))
83 puts(" System Locale: n/a\n");
87 printf(" System Locale: %s\n", i->locale[0]);
88 STRV_FOREACH(j, i->locale + 1)
92 printf(" VC Keymap: %s\n", strna(i->vconsole_keymap));
93 if (!isempty(i->vconsole_keymap_toggle))
94 printf("VC Toggle Keymap: %s\n", i->vconsole_keymap_toggle);
96 printf(" X11 Layout: %s\n", strna(i->x11_layout));
97 if (!isempty(i->x11_model))
98 printf(" X11 Model: %s\n", i->x11_model);
99 if (!isempty(i->x11_variant))
100 printf(" X11 Variant: %s\n", i->x11_variant);
101 if (!isempty(i->x11_options))
102 printf(" X11 Options: %s\n", i->x11_options);
105 static int status_property(const char *name, DBusMessageIter *iter, StatusInfo *i) {
111 switch (dbus_message_iter_get_arg_type(iter)) {
113 case DBUS_TYPE_STRING: {
116 dbus_message_iter_get_basic(iter, &s);
118 if (streq(name, "VConsoleKeymap"))
119 i->vconsole_keymap = s;
120 else if (streq(name, "VConsoleKeymapToggle"))
121 i->vconsole_keymap_toggle = s;
122 else if (streq(name, "X11Layout"))
124 else if (streq(name, "X11Model"))
126 else if (streq(name, "X11Variant"))
128 else if (streq(name, "X11Options"))
134 case DBUS_TYPE_ARRAY:
136 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
139 r = bus_parse_strv_iter(iter, &l);
143 if (streq(name, "Locale")) {
144 strv_free(i->locale);
156 static int show_status(DBusConnection *bus, char **args, unsigned n) {
157 _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
158 const char *interface = "";
160 DBusMessageIter iter, sub, sub2, sub3;
165 r = bus_method_call_with_reply(
167 "org.freedesktop.locale1",
168 "/org/freedesktop/locale1",
169 "org.freedesktop.DBus.Properties",
173 DBUS_TYPE_STRING, &interface,
178 if (!dbus_message_iter_init(reply, &iter) ||
179 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
180 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
181 log_error("Failed to parse reply.");
186 dbus_message_iter_recurse(&iter, &sub);
188 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
191 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
192 log_error("Failed to parse reply.");
196 dbus_message_iter_recurse(&sub, &sub2);
198 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
199 log_error("Failed to parse reply.");
203 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
204 log_error("Failed to parse reply.");
208 dbus_message_iter_recurse(&sub2, &sub3);
210 r = status_property(name, &sub3, &info);
212 log_error("Failed to parse reply.");
216 dbus_message_iter_next(&sub);
219 print_status_info(&info);
220 strv_free(info.locale);
224 static int set_locale(DBusConnection *bus, char **args, unsigned n) {
225 _cleanup_dbus_message_unref_ DBusMessage *m = NULL, *reply = NULL;
226 dbus_bool_t interactive = true;
228 DBusMessageIter iter;
234 dbus_error_init(&error);
236 polkit_agent_open_if_enabled();
238 m = dbus_message_new_method_call(
239 "org.freedesktop.locale1",
240 "/org/freedesktop/locale1",
241 "org.freedesktop.locale1",
246 dbus_message_iter_init_append(m, &iter);
248 r = bus_append_strv_iter(&iter, args + 1);
252 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &interactive))
255 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
257 log_error("Failed to issue method call: %s", bus_error_message(&error));
265 dbus_error_free(&error);
269 static int list_locales(DBusConnection *bus, char **args, unsigned n) {
270 /* Stolen from glibc... */
276 /* Name hash table. */
277 uint32_t namehash_offset;
278 uint32_t namehash_used;
279 uint32_t namehash_size;
281 uint32_t string_offset;
282 uint32_t string_used;
283 uint32_t string_size;
284 /* Table with locale records. */
285 uint32_t locrectab_offset;
286 uint32_t locrectab_used;
287 uint32_t locrectab_size;
288 /* MD5 sum hash table. */
289 uint32_t sumhash_offset;
290 uint32_t sumhash_used;
291 uint32_t sumhash_size;
295 /* Hash value of the name. */
297 /* Offset of the name in the string table. */
298 uint32_t name_offset;
299 /* Offset of the locale record. */
300 uint32_t locrec_offset;
303 const struct locarhead *h;
304 const struct namehashent *e;
305 const void *p = MAP_FAILED;
306 _cleanup_close_ int fd = -1;
307 _cleanup_strv_free_ char **l = NULL;
315 locales = set_new(string_hash_func, string_compare_func);
319 fd = open("/usr/lib/locale/locale-archive", O_RDONLY|O_NOCTTY|O_CLOEXEC);
321 log_error("Failed to open locale archive: %m");
326 if (fstat(fd, &st) < 0) {
327 log_error("fstat() failed: %m");
332 if (!S_ISREG(st.st_mode)) {
333 log_error("Archive file is not regular");
338 if (st.st_size < (off_t) sizeof(struct locarhead)) {
339 log_error("Archive has invalid size");
344 p = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
345 if (p == MAP_FAILED) {
346 log_error("Failed to map archive: %m");
351 h = (const struct locarhead *) p;
352 if (h->magic != 0xde020109 ||
353 h->namehash_offset + h->namehash_size > st.st_size ||
354 h->string_offset + h->string_size > st.st_size ||
355 h->locrectab_offset + h->locrectab_size > st.st_size ||
356 h->sumhash_offset + h->sumhash_size > st.st_size) {
357 log_error("Invalid archive file.");
362 e = (const struct namehashent*) ((const uint8_t*) p + h->namehash_offset);
363 for (i = 0; i < h->namehash_size; i++) {
366 if (e[i].locrec_offset == 0)
369 z = strdup((char*) p + e[i].name_offset);
375 r = set_put(locales, z);
378 log_error("Failed to add locale: %s", strerror(-r));
383 l = set_get_strv(locales);
394 pager_open_if_enabled();
403 munmap((void*) p, sz);
405 set_free_free(locales);
410 static int set_vconsole_keymap(DBusConnection *bus, char **args, unsigned n) {
411 _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
412 dbus_bool_t interactive = true, b;
413 const char *map, *toggle_map;
419 log_error("Too many arguments.");
423 polkit_agent_open_if_enabled();
426 toggle_map = n > 2 ? args[2] : "";
429 return bus_method_call_with_reply(
431 "org.freedesktop.locale1",
432 "/org/freedesktop/locale1",
433 "org.freedesktop.locale1",
434 "SetVConsoleKeyboard",
437 DBUS_TYPE_STRING, &map,
438 DBUS_TYPE_STRING, &toggle_map,
439 DBUS_TYPE_BOOLEAN, &b,
440 DBUS_TYPE_BOOLEAN, &interactive,
444 static Set *keymaps = NULL;
448 const struct stat *sb,
450 struct FTW *ftwbuf) {
458 if (!endswith(fpath, ".map") &&
459 !endswith(fpath, ".map.gz"))
462 p = strdup(path_get_file_name(fpath));
466 e = endswith(p, ".map");
470 e = endswith(p, ".map.gz");
474 r = set_put(keymaps, p);
478 log_error("Can't add keymap: %s", strerror(-r));
486 static int list_vconsole_keymaps(DBusConnection *bus, char **args, unsigned n) {
487 char _cleanup_strv_free_ **l = NULL;
490 keymaps = set_new(string_hash_func, string_compare_func);
494 nftw("/usr/share/kbd/keymaps/", nftw_cb, 20, FTW_MOUNT|FTW_PHYS);
495 nftw("/usr/lib/kbd/keymaps/", nftw_cb, 20, FTW_MOUNT|FTW_PHYS);
496 nftw("/lib/kbd/keymaps/", nftw_cb, 20, FTW_MOUNT|FTW_PHYS);
498 l = set_get_strv(keymaps);
500 set_free_free(keymaps);
506 if (strv_isempty(l)) {
507 log_error("Couldn't find any console keymaps.");
513 pager_open_if_enabled();
522 static int set_x11_keymap(DBusConnection *bus, char **args, unsigned n) {
523 _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
524 dbus_bool_t interactive = true, b;
525 const char *layout, *model, *variant, *options;
531 log_error("Too many arguments.");
535 polkit_agent_open_if_enabled();
538 model = n > 2 ? args[2] : "";
539 variant = n > 3 ? args[3] : "";
540 options = n > 3 ? args[4] : "";
543 return bus_method_call_with_reply(
545 "org.freedesktop.locale1",
546 "/org/freedesktop/locale1",
547 "org.freedesktop.locale1",
551 DBUS_TYPE_STRING, &layout,
552 DBUS_TYPE_STRING, &model,
553 DBUS_TYPE_STRING, &variant,
554 DBUS_TYPE_STRING, &options,
555 DBUS_TYPE_BOOLEAN, &b,
556 DBUS_TYPE_BOOLEAN, &interactive,
560 static int help(void) {
562 printf("%s [OPTIONS...] COMMAND ...\n\n"
563 "Query or change system time and date settings.\n\n"
564 " -h --help Show this help\n"
565 " --version Show package version\n"
566 " --no-convert Don't convert keyboard mappings\n"
567 " --no-pager Do not pipe output into a pager\n"
568 " --no-ask-password Do not prompt for password\n"
569 " -H --host=[USER@]HOST Operate on remote host\n\n"
571 " status Show current locale settings\n"
572 " set-locale LOCALE... Set system locale\n"
573 " list-locales Show known locales\n"
574 " set-keymap MAP [MAP] Set virtual console keyboard mapping\n"
575 " list-keymaps Show known virtual console keyboard mappings\n"
576 " set-x11-keymap LAYOUT [MODEL] [VARIANT] [OPTIONS]\n"
577 " Set X11 keyboard mapping\n",
578 program_invocation_short_name);
583 static int parse_argv(int argc, char *argv[]) {
592 static const struct option options[] = {
593 { "help", no_argument, NULL, 'h' },
594 { "version", no_argument, NULL, ARG_VERSION },
595 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
596 { "host", required_argument, NULL, 'H' },
597 { "privileged", no_argument, NULL, 'P' },
598 { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
599 { "no-convert", no_argument, NULL, ARG_NO_CONVERT },
608 while ((c = getopt_long(argc, argv, "has:H:P", options, NULL)) >= 0) {
617 puts(PACKAGE_STRING);
619 puts(SYSTEMD_FEATURES);
623 arg_transport = TRANSPORT_POLKIT;
627 arg_transport = TRANSPORT_SSH;
643 log_error("Unknown option code %c", c);
651 static int localectl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
653 static const struct {
661 int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
663 { "status", LESS, 1, show_status },
664 { "set-locale", MORE, 2, set_locale },
665 { "list-locales", EQUAL, 1, list_locales },
666 { "set-keymap", MORE, 2, set_vconsole_keymap },
667 { "list-keymaps", EQUAL, 1, list_vconsole_keymaps },
668 { "set-x11-keymap", MORE, 2, set_x11_keymap },
678 left = argc - optind;
681 /* Special rule: no arguments means "status" */
684 if (streq(argv[optind], "help")) {
689 for (i = 0; i < ELEMENTSOF(verbs); i++)
690 if (streq(argv[optind], verbs[i].verb))
693 if (i >= ELEMENTSOF(verbs)) {
694 log_error("Unknown operation %s", argv[optind]);
699 switch (verbs[i].argc_cmp) {
702 if (left != verbs[i].argc) {
703 log_error("Invalid number of arguments.");
710 if (left < verbs[i].argc) {
711 log_error("Too few arguments.");
718 if (left > verbs[i].argc) {
719 log_error("Too many arguments.");
726 assert_not_reached("Unknown comparison operator.");
730 log_error("Failed to get D-Bus connection: %s", error->message);
734 return verbs[i].dispatch(bus, argv + optind, left);
737 int main(int argc, char *argv[]) {
738 int r, retval = EXIT_FAILURE;
739 DBusConnection *bus = NULL;
742 dbus_error_init(&error);
744 setlocale(LC_ALL, "");
745 log_parse_environment();
748 r = parse_argv(argc, argv);
752 retval = EXIT_SUCCESS;
756 if (arg_transport == TRANSPORT_NORMAL)
757 bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
758 else if (arg_transport == TRANSPORT_POLKIT)
759 bus_connect_system_polkit(&bus, &error);
760 else if (arg_transport == TRANSPORT_SSH)
761 bus_connect_system_ssh(NULL, arg_host, &bus, &error);
763 assert_not_reached("Uh, invalid transport...");
765 r = localectl_main(bus, argc, argv, &error);
766 retval = r < 0 ? EXIT_FAILURE : r;
770 dbus_connection_flush(bus);
771 dbus_connection_close(bus);
772 dbus_connection_unref(bus);
775 dbus_error_free(&error);