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Systemd/src/locale/localed.c

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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2011 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 <errno.h>
#include <string.h>
#include <unistd.h>
#include "sd-bus.h"
#include "util.h"
#include "mkdir.h"
#include "strv.h"
#include "def.h"
#include "env-util.h"
#include "fileio.h"
#include "fileio-label.h"
#include "bus-util.h"
#include "bus-error.h"
#include "bus-message.h"
#include "event-util.h"
#include "locale-util.h"
#include "selinux-util.h"
#ifdef HAVE_XKBCOMMON
#include <xkbcommon/xkbcommon.h>
#endif
enum {
/* We don't list LC_ALL here on purpose. People should be
* using LANG instead. */
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) {
free_and_replace(&c->x11_layout, NULL);
free_and_replace(&c->x11_model, NULL);
free_and_replace(&c->x11_variant, NULL);
free_and_replace(&c->x11_options, NULL);
}
static void context_free_vconsole(Context *c) {
free_and_replace(&c->vc_keymap, NULL);
free_and_replace(&c->vc_keymap_toggle, NULL);
}
static void context_free_locale(Context *c) {
int p;
for (p = 0; p < _LOCALE_MAX; p++)
free_and_replace(&c->locale[p], NULL);
}
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]))
free_and_replace(&c->locale[p], NULL);
}
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) {
if (streq(a[1], "XkbLayout")) {
free_and_replace(&c->x11_layout, a[2]);
a[2] = NULL;
} else if (streq(a[1], "XkbModel")) {
free_and_replace(&c->x11_model, a[2]);
a[2] = NULL;
} else if (streq(a[1], "XkbVariant")) {
free_and_replace(&c->x11_variant, a[2]);
a[2] = NULL;
} else if (streq(a[1], "XkbOptions")) {
free_and_replace(&c->x11_options, 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_bus_message_unref_ 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_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
* entry that matches our key with everything
* but the first layout stripped off. */
if (startswith_comma(c->x11_layout, a[1]))
matching = 5;
else {
char *x;
/* If that didn't work, strip off the
* other layouts from the entry, too */
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
* keymap. Check if we have a converted map which
* matches just the first layout.
*/
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_and_replace(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_and_replace(&c->vc_keymap, new_keymap);
free_and_replace(&c->vc_keymap_toggle, NULL);
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
* set it based on the language fallback table. */
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",
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;
free_and_replace(&c->locale[p], NULL);
}
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",
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
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",
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_bus_flush_close_unref_ 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_event_unref_ sd_event *event = NULL;
_cleanup_bus_flush_close_unref_ 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;
}
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