#include <errno.h>

#include <string.h>

#include <unistd.h>

#ifdef HAVE_XKBCOMMON

#include <xkbcommon/xkbcommon.h>

#endif

#include "sd-bus.h"

#include "alloc-util.h"

#include "bus-error.h"

#include "bus-message.h"

#include "bus-util.h"

#include "def.h"

#include "env-util.h"

#include "fd-util.h"

#include "fileio-label.h"

#include "fileio.h"

#include "locale-util.h"

#include "mkdir.h"

#include "path-util.h"

#include "selinux-util.h"

#include "strv.h"

#include "user-util.h"

#include "util.h"

enum {

/* We don't list LC_ALL here on purpose. People should be

LOCALE_LANG,

LOCALE_LANGUAGE,

LOCALE_LC_CTYPE,

LOCALE_LC_NUMERIC,

LOCALE_LC_TIME,

LOCALE_LC_COLLATE,

LOCALE_LC_MONETARY,

LOCALE_LC_MESSAGES,

LOCALE_LC_PAPER,

LOCALE_LC_NAME,

LOCALE_LC_ADDRESS,

LOCALE_LC_TELEPHONE,

LOCALE_LC_MEASUREMENT,

LOCALE_LC_IDENTIFICATION,

_LOCALE_MAX

};

static const char * const names[_LOCALE_MAX] = {

[LOCALE_LANG] = "LANG",

[LOCALE_LANGUAGE] = "LANGUAGE",

[LOCALE_LC_CTYPE] = "LC_CTYPE",

[LOCALE_LC_NUMERIC] = "LC_NUMERIC",

[LOCALE_LC_TIME] = "LC_TIME",

[LOCALE_LC_COLLATE] = "LC_COLLATE",

[LOCALE_LC_MONETARY] = "LC_MONETARY",

[LOCALE_LC_MESSAGES] = "LC_MESSAGES",

[LOCALE_LC_PAPER] = "LC_PAPER",

[LOCALE_LC_NAME] = "LC_NAME",

[LOCALE_LC_ADDRESS] = "LC_ADDRESS",

[LOCALE_LC_TELEPHONE] = "LC_TELEPHONE",

[LOCALE_LC_MEASUREMENT] = "LC_MEASUREMENT",

[LOCALE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"

};

typedef struct Context {

char *locale[_LOCALE_MAX];

char *x11_layout;

char *x11_model;

char *x11_variant;

char *x11_options;

char *vc_keymap;

char *vc_keymap_toggle;

Hashmap *polkit_registry;

} Context;

static const char* nonempty(const char *s) {

return isempty(s) ? NULL : s;

}

static bool startswith_comma(const char *s, const char *prefix) {

const char *t;

return s && (t = startswith(s, prefix)) && (*t == ',');

}

static void context_free_x11(Context *c) {

c->x11_layout = mfree(c->x11_layout);

c->x11_options = mfree(c->x11_options);

c->x11_model = mfree(c->x11_model);

c->x11_variant = mfree(c->x11_variant);

}

static void context_free_vconsole(Context *c) {

c->vc_keymap = mfree(c->vc_keymap);

c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);

}

static void context_free_locale(Context *c) {

int p;

for (p = 0; p < _LOCALE_MAX; p++)

c->locale[p] = mfree(c->locale[p]);

}

static void context_free(Context *c) {

context_free_locale(c);

context_free_x11(c);

context_free_vconsole(c);

bus_verify_polkit_async_registry_free(c->polkit_registry);

};

static void locale_simplify(Context *c) {

int p;

for (p = LOCALE_LANG+1; p < _LOCALE_MAX; p++)

if (isempty(c->locale[p]) || streq_ptr(c->locale[LOCALE_LANG], c->locale[p]))

c->locale[p] = mfree(c->locale[p]);

}

static int locale_read_data(Context *c) {

int r;

context_free_locale(c);

r = parse_env_file("/etc/locale.conf", NEWLINE,

"LANG", &c->locale[LOCALE_LANG],

"LANGUAGE", &c->locale[LOCALE_LANGUAGE],

"LC_CTYPE", &c->locale[LOCALE_LC_CTYPE],

"LC_NUMERIC", &c->locale[LOCALE_LC_NUMERIC],

"LC_TIME", &c->locale[LOCALE_LC_TIME],

"LC_COLLATE", &c->locale[LOCALE_LC_COLLATE],

"LC_MONETARY", &c->locale[LOCALE_LC_MONETARY],

"LC_MESSAGES", &c->locale[LOCALE_LC_MESSAGES],

"LC_PAPER", &c->locale[LOCALE_LC_PAPER],

"LC_NAME", &c->locale[LOCALE_LC_NAME],

"LC_ADDRESS", &c->locale[LOCALE_LC_ADDRESS],

"LC_TELEPHONE", &c->locale[LOCALE_LC_TELEPHONE],

"LC_MEASUREMENT", &c->locale[LOCALE_LC_MEASUREMENT],

"LC_IDENTIFICATION", &c->locale[LOCALE_LC_IDENTIFICATION],

NULL);

if (r == -ENOENT) {

int p;

/* Fill in what we got passed from systemd. */

for (p = 0; p < _LOCALE_MAX; p++) {

assert(names[p]);

r = free_and_strdup(&c->locale[p],

nonempty(getenv(names[p])));

if (r < 0)

return r;

}

r = 0;

}

locale_simplify(c);

return r;

}

static int vconsole_read_data(Context *c) {

int r;

context_free_vconsole(c);

r = parse_env_file("/etc/vconsole.conf", NEWLINE,

"KEYMAP", &c->vc_keymap,

"KEYMAP_TOGGLE", &c->vc_keymap_toggle,

NULL);

if (r < 0 && r != -ENOENT)

return r;

return 0;

}

static int x11_read_data(Context *c) {

_cleanup_fclose_ FILE *f;

char line[LINE_MAX];

bool in_section = false;

int r;

context_free_x11(c);

f = fopen("/etc/X11/xorg.conf.d/00-keyboard.conf", "re");

if (!f)

return errno == ENOENT ? 0 : -errno;

while (fgets(line, sizeof(line), f)) {

char *l;

char_array_0(line);

l = strstrip(line);

if (l[0] == 0 || l[0] == '#')

continue;

if (in_section && first_word(l, "Option")) {

_cleanup_strv_free_ char **a = NULL;

r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);

if (r < 0)

return r;

if (strv_length(a) == 3) {

char **p = NULL;

if (streq(a[1], "XkbLayout"))

p = &c->x11_layout;

else if (streq(a[1], "XkbModel"))

p = &c->x11_model;

else if (streq(a[1], "XkbVariant"))

p = &c->x11_variant;

else if (streq(a[1], "XkbOptions"))

p = &c->x11_options;

if (p) {

free(*p);

*p = a[2];

a[2] = NULL;

}

}

} else if (!in_section && first_word(l, "Section")) {

_cleanup_strv_free_ char **a = NULL;

r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);

if (r < 0)

return -ENOMEM;

if (strv_length(a) == 2 && streq(a[1], "InputClass"))

in_section = true;

} else if (in_section && first_word(l, "EndSection"))

in_section = false;

}

return 0;

}

static int context_read_data(Context *c) {

int r, q, p;

r = locale_read_data(c);

q = vconsole_read_data(c);

p = x11_read_data(c);

return r < 0 ? r : q < 0 ? q : p;

}

static int locale_write_data(Context *c, char ***settings) {

int r, p;

_cleanup_strv_free_ char **l = NULL;

/* Set values will be returned as strv in *settings on success. */

r = load_env_file(NULL, "/etc/locale.conf", NULL, &l);

if (r < 0 && r != -ENOENT)

return r;

for (p = 0; p < _LOCALE_MAX; p++) {

_cleanup_free_ char *t = NULL;

char **u;

assert(names[p]);

if (isempty(c->locale[p])) {

l = strv_env_unset(l, names[p]);

continue;

}

if (asprintf(&t, "%s=%s", names[p], c->locale[p]) < 0)

return -ENOMEM;

u = strv_env_set(l, t);

if (!u)

return -ENOMEM;

strv_free(l);

l = u;

}

if (strv_isempty(l)) {

if (unlink("/etc/locale.conf") < 0)

return errno == ENOENT ? 0 : -errno;

return 0;

}

r = write_env_file_label("/etc/locale.conf", l);

if (r < 0)

return r;

*settings = l;

l = NULL;

return 0;

}

static int locale_update_system_manager(Context *c, sd_bus *bus) {

_cleanup_free_ char **l_unset = NULL;

_cleanup_strv_free_ char **l_set = NULL;

_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;

sd_bus_error error = SD_BUS_ERROR_NULL;

unsigned c_set, c_unset, p;

int r;

assert(bus);

l_unset = new0(char*, _LOCALE_MAX);

if (!l_unset)

return -ENOMEM;

l_set = new0(char*, _LOCALE_MAX);

if (!l_set)

return -ENOMEM;

for (p = 0, c_set = 0, c_unset = 0; p < _LOCALE_MAX; p++) {

assert(names[p]);

if (isempty(c->locale[p]))

l_unset[c_set++] = (char*) names[p];

else {

char *s;

if (asprintf(&s, "%s=%s", names[p], c->locale[p]) < 0)

return -ENOMEM;

l_set[c_unset++] = s;

}

}

assert(c_set + c_unset == _LOCALE_MAX);

r = sd_bus_message_new_method_call(bus, &m,

"org.freedesktop.systemd1",

"/org/freedesktop/systemd1",

"org.freedesktop.systemd1.Manager",

"UnsetAndSetEnvironment");

if (r < 0)

return r;

r = sd_bus_message_append_strv(m, l_unset);

if (r < 0)

return r;

r = sd_bus_message_append_strv(m, l_set);

if (r < 0)

return r;

r = sd_bus_call(bus, m, 0, &error, NULL);

if (r < 0)

log_error_errno(r, "Failed to update the manager environment: %m");

return 0;

}

static int vconsole_write_data(Context *c) {

int r;

_cleanup_strv_free_ char **l = NULL;

r = load_env_file(NULL, "/etc/vconsole.conf", NULL, &l);

if (r < 0 && r != -ENOENT)

return r;

if (isempty(c->vc_keymap))

l = strv_env_unset(l, "KEYMAP");

else {

_cleanup_free_ char *s = NULL;

char **u;

s = strappend("KEYMAP=", c->vc_keymap);

if (!s)

return -ENOMEM;

u = strv_env_set(l, s);

if (!u)

return -ENOMEM;

strv_free(l);

l = u;

}

if (isempty(c->vc_keymap_toggle))

l = strv_env_unset(l, "KEYMAP_TOGGLE");

else {

_cleanup_free_ char *s = NULL;

char **u;

s = strappend("KEYMAP_TOGGLE=", c->vc_keymap_toggle);

if (!s)

return -ENOMEM;

u = strv_env_set(l, s);

if (!u)

return -ENOMEM;

strv_free(l);

l = u;

}

if (strv_isempty(l)) {

if (unlink("/etc/vconsole.conf") < 0)

return errno == ENOENT ? 0 : -errno;

return 0;

}

return write_env_file_label("/etc/vconsole.conf", l);

}

static int x11_write_data(Context *c) {

_cleanup_fclose_ FILE *f = NULL;

_cleanup_free_ char *temp_path = NULL;

int r;

if (isempty(c->x11_layout) &&

isempty(c->x11_model) &&

isempty(c->x11_variant) &&

isempty(c->x11_options)) {

if (unlink("/etc/X11/xorg.conf.d/00-keyboard.conf") < 0)

return errno == ENOENT ? 0 : -errno;

return 0;

}

mkdir_p_label("/etc/X11/xorg.conf.d", 0755);

r = fopen_temporary("/etc/X11/xorg.conf.d/00-keyboard.conf", &f, &temp_path);

if (r < 0)

return r;

fchmod(fileno(f), 0644);

fputs("# Read and parsed by systemd-localed. It's probably wise not to edit this file\n"

"# manually too freely.\n"

"Section \"InputClass\"\n"

" Identifier \"system-keyboard\"\n"

" MatchIsKeyboard \"on\"\n", f);

if (!isempty(c->x11_layout))

fprintf(f, " Option \"XkbLayout\" \"%s\"\n", c->x11_layout);

if (!isempty(c->x11_model))

fprintf(f, " Option \"XkbModel\" \"%s\"\n", c->x11_model);

if (!isempty(c->x11_variant))

fprintf(f, " Option \"XkbVariant\" \"%s\"\n", c->x11_variant);

if (!isempty(c->x11_options))

fprintf(f, " Option \"XkbOptions\" \"%s\"\n", c->x11_options);

fputs("EndSection\n", f);

r = fflush_and_check(f);

if (r < 0)

goto fail;

if (rename(temp_path, "/etc/X11/xorg.conf.d/00-keyboard.conf") < 0) {

r = -errno;

goto fail;

}

return 0;

fail:

(void) unlink("/etc/X11/xorg.conf.d/00-keyboard.conf");

if (temp_path)

(void) unlink(temp_path);

return r;

}

static int vconsole_reload(sd_bus *bus) {

_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;

int r;

assert(bus);

r = sd_bus_call_method(bus,

"org.freedesktop.systemd1",

"/org/freedesktop/systemd1",

"org.freedesktop.systemd1.Manager",

"RestartUnit",

&error,

NULL,

"ss", "systemd-vconsole-setup.service", "replace");

if (r < 0)

log_error("Failed to issue method call: %s", bus_error_message(&error, -r));

return r;

}

static const char* strnulldash(const char *s) {

return isempty(s) || streq(s, "-") ? NULL : s;

}

static int read_next_mapping(const char* filename,

unsigned min_fields, unsigned max_fields,

FILE *f, unsigned *n, char ***a) {

assert(f);

assert(n);

assert(a);

for (;;) {

char line[LINE_MAX];

char *l, **b;

int r;

size_t length;

errno = 0;

if (!fgets(line, sizeof(line), f)) {

if (ferror(f))

return errno ? -errno : -EIO;

return 0;

}

(*n) ++;

l = strstrip(line);

if (l[0] == 0 || l[0] == '#')

continue;

r = strv_split_extract(&b, l, WHITESPACE, EXTRACT_QUOTES);

if (r < 0)

return r;

length = strv_length(b);

if (length < min_fields || length > max_fields) {

log_error("Invalid line %s:%u, ignoring.", filename, *n);

strv_free(b);

continue;

}

*a = b;

return 1;

}

}

static int vconsole_convert_to_x11(Context *c, sd_bus *bus) {

bool modified = false;

assert(bus);

if (isempty(c->vc_keymap)) {

modified =

!isempty(c->x11_layout) ||

!isempty(c->x11_model) ||

!isempty(c->x11_variant) ||

!isempty(c->x11_options);

context_free_x11(c);

} else {

_cleanup_fclose_ FILE *f = NULL;

unsigned n = 0;

f = fopen(SYSTEMD_KBD_MODEL_MAP, "re");

if (!f)

return -errno;

for (;;) {

_cleanup_strv_free_ char **a = NULL;

int r;

r = read_next_mapping(SYSTEMD_KBD_MODEL_MAP, 5, UINT_MAX, f, &n, &a);

if (r < 0)

return r;

if (r == 0)

break;

if (!streq(c->vc_keymap, a[0]))

continue;

if (!streq_ptr(c->x11_layout, strnulldash(a[1])) ||

!streq_ptr(c->x11_model, strnulldash(a[2])) ||

!streq_ptr(c->x11_variant, strnulldash(a[3])) ||

!streq_ptr(c->x11_options, strnulldash(a[4]))) {

if (free_and_strdup(&c->x11_layout, strnulldash(a[1])) < 0 ||

free_and_strdup(&c->x11_model, strnulldash(a[2])) < 0 ||

free_and_strdup(&c->x11_variant, strnulldash(a[3])) < 0 ||

free_and_strdup(&c->x11_options, strnulldash(a[4])) < 0)

return -ENOMEM;

modified = true;

}

break;

}

}

if (modified) {

int r;

r = x11_write_data(c);

if (r < 0)

return log_error_errno(r, "Failed to set X11 keyboard layout: %m");

log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",

strempty(c->x11_layout),

strempty(c->x11_model),

strempty(c->x11_variant),

strempty(c->x11_options));

sd_bus_emit_properties_changed(bus,

"/org/freedesktop/locale1",

"org.freedesktop.locale1",

"X11Layout", "X11Model", "X11Variant", "X11Options", NULL);

} else

log_debug("X11 keyboard layout was not modified.");

return 0;

}

static int find_converted_keymap(const char *x11_layout, const char *x11_variant, char **new_keymap) {

const char *dir;

_cleanup_free_ char *n;

if (x11_variant)

n = strjoin(x11_layout, "-", x11_variant, NULL);

else

n = strdup(x11_layout);

if (!n)

return -ENOMEM;

NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) {

_cleanup_free_ char *p = NULL, *pz = NULL;

bool uncompressed;

p = strjoin(dir, "xkb/", n, ".map", NULL);

pz = strjoin(dir, "xkb/", n, ".map.gz", NULL);

if (!p || !pz)

return -ENOMEM;

uncompressed = access(p, F_OK) == 0;

if (uncompressed || access(pz, F_OK) == 0) {

log_debug("Found converted keymap %s at %s",

n, uncompressed ? p : pz);

*new_keymap = n;

n = NULL;

return 1;

}

}

return 0;

}

static int find_legacy_keymap(Context *c, char **new_keymap) {

_cleanup_fclose_ FILE *f;

unsigned n = 0;

unsigned best_matching = 0;

int r;

f = fopen(SYSTEMD_KBD_MODEL_MAP, "re");

if (!f)

return -errno;

for (;;) {

_cleanup_strv_free_ char **a = NULL;

unsigned matching = 0;

r = read_next_mapping(SYSTEMD_KBD_MODEL_MAP, 5, UINT_MAX, f, &n, &a);

if (r < 0)

return r;

if (r == 0)

break;

/* Determine how well matching this entry is */

if (streq_ptr(c->x11_layout, a[1]))

/* If we got an exact match, this is best */

matching = 10;

else {

/* We have multiple X layouts, look for an

if (startswith_comma(c->x11_layout, a[1]))

matching = 5;

else {

char *x;

/* If that didn't work, strip off the

x = strndupa(a[1], strcspn(a[1], ","));

if (startswith_comma(c->x11_layout, x))

matching = 1;

}

}

if (matching > 0) {

if (isempty(c->x11_model) || streq_ptr(c->x11_model, a[2])) {

matching++;

if (streq_ptr(c->x11_variant, a[3])) {

matching++;

if (streq_ptr(c->x11_options, a[4]))

matching++;

}

}

}

/* The best matching entry so far, then let's save that */

if (matching >= MAX(best_matching, 1u)) {

log_debug("Found legacy keymap %s with score %u",

a[0], matching);

if (matching > best_matching) {

best_matching = matching;

r = free_and_strdup(new_keymap, a[0]);

if (r < 0)

return r;

}

}

}

if (best_matching < 10 && c->x11_layout) {

/* The best match is only the first part of the X11

char *l, *v = NULL, *converted;

l = strndupa(c->x11_layout, strcspn(c->x11_layout, ","));

if (c->x11_variant)

v = strndupa(c->x11_variant, strcspn(c->x11_variant, ","));

r = find_converted_keymap(l, v, &converted);

if (r < 0)

return r;

if (r > 0) {

free(*new_keymap);

*new_keymap = converted;

}

}

return 0;

}

static int find_language_fallback(const char *lang, char **language) {

_cleanup_fclose_ FILE *f = NULL;

unsigned n = 0;

assert(language);

f = fopen(SYSTEMD_LANGUAGE_FALLBACK_MAP, "re");

if (!f)

return -errno;

for (;;) {

_cleanup_strv_free_ char **a = NULL;

int r;

r = read_next_mapping(SYSTEMD_LANGUAGE_FALLBACK_MAP, 2, 2, f, &n, &a);

if (r <= 0)

return r;

if (streq(lang, a[0])) {

assert(strv_length(a) == 2);

*language = a[1];

a[1] = NULL;

return 1;

}

}

assert_not_reached("should not be here");

}

static int x11_convert_to_vconsole(Context *c, sd_bus *bus) {

bool modified = false;

int r;

assert(bus);

if (isempty(c->x11_layout)) {

modified =

!isempty(c->vc_keymap) ||

!isempty(c->vc_keymap_toggle);

context_free_x11(c);

} else {

char *new_keymap = NULL;

r = find_converted_keymap(c->x11_layout, c->x11_variant, &new_keymap);

if (r < 0)

return r;

else if (r == 0) {

r = find_legacy_keymap(c, &new_keymap);

if (r < 0)

return r;

}

if (!streq_ptr(c->vc_keymap, new_keymap)) {

free(c->vc_keymap);

c->vc_keymap = new_keymap;

c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);

modified = true;

} else

free(new_keymap);

}

if (modified) {

r = vconsole_write_data(c);

if (r < 0)

log_error_errno(r, "Failed to set virtual console keymap: %m");

log_info("Changed virtual console keymap to '%s' toggle '%s'",

strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));

sd_bus_emit_properties_changed(bus,

"/org/freedesktop/locale1",

"org.freedesktop.locale1",

"VConsoleKeymap", "VConsoleKeymapToggle", NULL);

return vconsole_reload(bus);

} else

log_debug("Virtual console keymap was not modified.");

return 0;

}

static int property_get_locale(

sd_bus *bus,

const char *path,

const char *interface,

const char *property,

sd_bus_message *reply,

void *userdata,

sd_bus_error *error) {

Context *c = userdata;

_cleanup_strv_free_ char **l = NULL;

int p, q;

l = new0(char*, _LOCALE_MAX+1);

if (!l)

return -ENOMEM;

for (p = 0, q = 0; p < _LOCALE_MAX; p++) {

char *t;

if (isempty(c->locale[p]))

continue;

if (asprintf(&t, "%s=%s", names[p], c->locale[p]) < 0)

return -ENOMEM;

l[q++] = t;

}

return sd_bus_message_append_strv(reply, l);

}

static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *error) {

Context *c = userdata;

_cleanup_strv_free_ char **l = NULL;

char **i;

const char *lang = NULL;

int interactive;

bool modified = false;

bool have[_LOCALE_MAX] = {};

int p;

int r;

assert(m);

assert(c);

r = bus_message_read_strv_extend(m, &l);

if (r < 0)

return r;

r = sd_bus_message_read_basic(m, 'b', &interactive);

if (r < 0)

return r;

/* Check whether a variable changed and if it is valid */

STRV_FOREACH(i, l) {

bool valid = false;

for (p = 0; p < _LOCALE_MAX; p++) {

size_t k;

k = strlen(names[p]);

if (startswith(*i, names[p]) &&

(*i)[k] == '=' &&

locale_is_valid((*i) + k + 1)) {

valid = true;

have[p] = true;

if (p == LOCALE_LANG)

lang = (*i) + k + 1;

if (!streq_ptr(*i + k + 1, c->locale[p]))

modified = true;

break;

}

}

if (!valid)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid Locale data.");

}

/* If LANG was specified, but not LANGUAGE, check if we should

if (have[LOCALE_LANG] && !have[LOCALE_LANGUAGE]) {

_cleanup_free_ char *language = NULL;

assert(lang);

(void) find_language_fallback(lang, &language);

if (language) {

log_debug("Converted LANG=%s to LANGUAGE=%s", lang, language);

if (!streq_ptr(language, c->locale[LOCALE_LANGUAGE])) {

r = strv_extendf(&l, "LANGUAGE=%s", language);

if (r < 0)

return r;

have[LOCALE_LANGUAGE] = true;

modified = true;

}

}

}

/* Check whether a variable is unset */

if (!modified)

for (p = 0; p < _LOCALE_MAX; p++)

if (!isempty(c->locale[p]) && !have[p]) {

modified = true;

break;

}

if (modified) {

_cleanup_strv_free_ char **settings = NULL;

r = bus_verify_polkit_async(

m,

CAP_SYS_ADMIN,

"org.freedesktop.locale1.set-locale",

NULL,

interactive,

UID_INVALID,

&c->polkit_registry,

error);

if (r < 0)

return r;

if (r == 0)

return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */

STRV_FOREACH(i, l)

for (p = 0; p < _LOCALE_MAX; p++) {

size_t k;

k = strlen(names[p]);

if (startswith(*i, names[p]) && (*i)[k] == '=') {

r = free_and_strdup(&c->locale[p], *i + k + 1);

if (r < 0)

return r;

break;

}

}

for (p = 0; p < _LOCALE_MAX; p++) {

if (have[p])

continue;

c->locale[p] = mfree(c->locale[p]);

}

locale_simplify(c);

r = locale_write_data(c, &settings);

if (r < 0) {

log_error_errno(r, "Failed to set locale: %m");

return sd_bus_error_set_errnof(error, r, "Failed to set locale: %s", strerror(-r));

}

locale_update_system_manager(c, sd_bus_message_get_bus(m));

if (settings) {

_cleanup_free_ char *line;

line = strv_join(settings, ", ");

log_info("Changed locale to %s.", strnull(line));

} else

log_info("Changed locale to unset.");

(void) sd_bus_emit_properties_changed(

sd_bus_message_get_bus(m),

"/org/freedesktop/locale1",

"org.freedesktop.locale1",

"Locale", NULL);

} else

log_debug("Locale settings were not modified.");

return sd_bus_reply_method_return(m, NULL);

}

static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {

Context *c = userdata;

const char *keymap, *keymap_toggle;

int convert, interactive;

int r;

assert(m);

assert(c);

r = sd_bus_message_read(m, "ssbb", &keymap, &keymap_toggle, &convert, &interactive);

if (r < 0)

return r;

if (isempty(keymap))

keymap = NULL;

if (isempty(keymap_toggle))

keymap_toggle = NULL;

if (!streq_ptr(keymap, c->vc_keymap) ||

!streq_ptr(keymap_toggle, c->vc_keymap_toggle)) {

if ((keymap && (!filename_is_valid(keymap) || !string_is_safe(keymap))) ||

(keymap_toggle && (!filename_is_valid(keymap_toggle) || !string_is_safe(keymap_toggle))))

return sd_bus_error_set_errnof(error, -EINVAL, "Received invalid keymap data");

r = bus_verify_polkit_async(

m,

CAP_SYS_ADMIN,

"org.freedesktop.locale1.set-keyboard",

NULL,

interactive,

UID_INVALID,

&c->polkit_registry,

error);

if (r < 0)

return r;

if (r == 0)

return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */

if (free_and_strdup(&c->vc_keymap, keymap) < 0 ||

free_and_strdup(&c->vc_keymap_toggle, keymap_toggle) < 0)

return -ENOMEM;

r = vconsole_write_data(c);

if (r < 0) {

log_error_errno(r, "Failed to set virtual console keymap: %m");

return sd_bus_error_set_errnof(error, r, "Failed to set virtual console keymap: %s", strerror(-r));

}

log_info("Changed virtual console keymap to '%s' toggle '%s'",

strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));

r = vconsole_reload(sd_bus_message_get_bus(m));

if (r < 0)

log_error_errno(r, "Failed to request keymap reload: %m");

(void) sd_bus_emit_properties_changed(

sd_bus_message_get_bus(m),

"/org/freedesktop/locale1",

"org.freedesktop.locale1",

"VConsoleKeymap", "VConsoleKeymapToggle", NULL);

if (convert) {

r = vconsole_convert_to_x11(c, sd_bus_message_get_bus(m));

if (r < 0)

log_error_errno(r, "Failed to convert keymap data: %m");

}

}

return sd_bus_reply_method_return(m, NULL);

}

#ifdef HAVE_XKBCOMMON

_printf_(3, 0)

static void log_xkb(struct xkb_context *ctx, enum xkb_log_level lvl, const char *format, va_list args) {

const char *fmt;

fmt = strjoina("libxkbcommon: ", format);

log_internalv(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, fmt, args);

}

static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {

const struct xkb_rule_names rmlvo = {

.model = model,

.layout = layout,

.variant = variant,

.options = options,

};

struct xkb_context *ctx = NULL;

struct xkb_keymap *km = NULL;

int r;

/* compile keymap from RMLVO information to check out its validity */

ctx = xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES);

if (!ctx) {

r = -ENOMEM;

goto exit;

}

xkb_context_set_log_fn(ctx, log_xkb);

km = xkb_keymap_new_from_names(ctx, &rmlvo, XKB_KEYMAP_COMPILE_NO_FLAGS);

if (!km) {

r = -EINVAL;

goto exit;

}

r = 0;

exit:

xkb_keymap_unref(km);

xkb_context_unref(ctx);

return r;

}

#else

static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {

return 0;

}

#endif

static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {

Context *c = userdata;

const char *layout, *model, *variant, *options;

int convert, interactive;

int r;

assert(m);

assert(c);

r = sd_bus_message_read(m, "ssssbb", &layout, &model, &variant, &options, &convert, &interactive);

if (r < 0)

return r;

if (isempty(layout))

layout = NULL;

if (isempty(model))

model = NULL;

if (isempty(variant))

variant = NULL;

if (isempty(options))

options = NULL;

if (!streq_ptr(layout, c->x11_layout) ||

!streq_ptr(model, c->x11_model) ||

!streq_ptr(variant, c->x11_variant) ||

!streq_ptr(options, c->x11_options)) {

if ((layout && !string_is_safe(layout)) ||

(model && !string_is_safe(model)) ||

(variant && !string_is_safe(variant)) ||

(options && !string_is_safe(options)))

return sd_bus_error_set_errnof(error, -EINVAL, "Received invalid keyboard data");

r = bus_verify_polkit_async(

m,

CAP_SYS_ADMIN,

"org.freedesktop.locale1.set-keyboard",

NULL,

interactive,

UID_INVALID,

&c->polkit_registry,

error);

if (r < 0)

return r;

if (r == 0)

return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */

r = verify_xkb_rmlvo(model, layout, variant, options);

if (r < 0) {

log_error_errno(r, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",

strempty(model), strempty(layout), strempty(variant), strempty(options));

return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot compile XKB keymap, refusing");

}

if (free_and_strdup(&c->x11_layout, layout) < 0 ||

free_and_strdup(&c->x11_model, model) < 0 ||

free_and_strdup(&c->x11_variant, variant) < 0 ||

free_and_strdup(&c->x11_options, options) < 0)

return -ENOMEM;

r = x11_write_data(c);

if (r < 0) {

log_error_errno(r, "Failed to set X11 keyboard layout: %m");

return sd_bus_error_set_errnof(error, r, "Failed to set X11 keyboard layout: %s", strerror(-r));

}

log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",

strempty(c->x11_layout),

strempty(c->x11_model),

strempty(c->x11_variant),

strempty(c->x11_options));

(void) sd_bus_emit_properties_changed(

sd_bus_message_get_bus(m),

"/org/freedesktop/locale1",

"org.freedesktop.locale1",

"X11Layout", "X11Model", "X11Variant", "X11Options", NULL);

if (convert) {

r = x11_convert_to_vconsole(c, sd_bus_message_get_bus(m));

if (r < 0)

log_error_errno(r, "Failed to convert keymap data: %m");

}

}

return sd_bus_reply_method_return(m, NULL);

}

static const sd_bus_vtable locale_vtable[] = {

SD_BUS_VTABLE_START(0),

SD_BUS_PROPERTY("Locale", "as", property_get_locale, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),

SD_BUS_PROPERTY("X11Layout", "s", NULL, offsetof(Context, x11_layout), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),

SD_BUS_PROPERTY("X11Model", "s", NULL, offsetof(Context, x11_model), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),

SD_BUS_PROPERTY("X11Variant", "s", NULL, offsetof(Context, x11_variant), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),

SD_BUS_PROPERTY("X11Options", "s", NULL, offsetof(Context, x11_options), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),

SD_BUS_PROPERTY("VConsoleKeymap", "s", NULL, offsetof(Context, vc_keymap), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),

SD_BUS_PROPERTY("VConsoleKeymapToggle", "s", NULL, offsetof(Context, vc_keymap_toggle), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),

SD_BUS_METHOD("SetLocale", "asb", NULL, method_set_locale, SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD("SetVConsoleKeyboard", "ssbb", NULL, method_set_vc_keyboard, SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD("SetX11Keyboard", "ssssbb", NULL, method_set_x11_keyboard, SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_VTABLE_END

};

static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {

_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;

int r;

assert(c);

assert(event);

assert(_bus);

r = sd_bus_default_system(&bus);

if (r < 0)

return log_error_errno(r, "Failed to get system bus connection: %m");

r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/locale1", "org.freedesktop.locale1", locale_vtable, c);

if (r < 0)

return log_error_errno(r, "Failed to register object: %m");

r = sd_bus_request_name(bus, "org.freedesktop.locale1", 0);

if (r < 0)

return log_error_errno(r, "Failed to register name: %m");

r = sd_bus_attach_event(bus, event, 0);

if (r < 0)

return log_error_errno(r, "Failed to attach bus to event loop: %m");

*_bus = bus;

bus = NULL;

return 0;

}

int main(int argc, char *argv[]) {

_cleanup_(context_free) Context context = {};

_cleanup_(sd_event_unrefp) sd_event *event = NULL;

_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;

int r;

log_set_target(LOG_TARGET_AUTO);

log_parse_environment();

log_open();

umask(0022);

mac_selinux_init("/etc");

if (argc != 1) {

log_error("This program takes no arguments.");

r = -EINVAL;

goto finish;

}

r = sd_event_default(&event);

if (r < 0) {

log_error_errno(r, "Failed to allocate event loop: %m");

goto finish;

}

sd_event_set_watchdog(event, true);

r = connect_bus(&context, event, &bus);

if (r < 0)

goto finish;

r = context_read_data(&context);

if (r < 0) {

log_error_errno(r, "Failed to read locale data: %m");

goto finish;

}

r = bus_event_loop_with_idle(event, bus, "org.freedesktop.locale1", DEFAULT_EXIT_USEC, NULL, NULL);

if (r < 0) {

log_error_errno(r, "Failed to run event loop: %m");

goto finish;

}

finish:

return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;

}