#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"

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)

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_message_unref_ sd_bus_message *reply = 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 r;

r = sd_bus_message_append_strv(m, args + 1);

if (r < 0)

return r;

r = sd_bus_message_append(m, "b", arg_ask_password);

if (r < 0)

return r;

r = sd_bus_send_with_reply_and_block(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_message_unref_ sd_bus_message *reply = NULL;

_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(path_get_file_name(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;

keymaps = set_new(string_hash_func, string_compare_func);

if (!keymaps)

return log_oom();

nftw("/usr/share/keymaps/", nftw_cb, 20, FTW_MOUNT|FTW_PHYS);

nftw("/usr/share/kbd/keymaps/", nftw_cb, 20, FTW_MOUNT|FTW_PHYS);

nftw("/usr/lib/kbd/keymaps/", nftw_cb, 20, FTW_MOUNT|FTW_PHYS);

nftw("/lib/kbd/keymaps/", 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_message_unref_ sd_bus_message *reply = NULL;

_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;

}