-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2011 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 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
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <dbus/dbus.h>
-
-#include <errno.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "util.h"
-#include "strv.h"
-#include "dbus-common.h"
-#include "polkit.h"
-
-#define INTERFACE \
- " <interface name=\"org.freedesktop.locale1\">\n" \
- " <property name=\"Locale\" type=\"as\" access=\"read\"/>\n" \
- " <method name=\"SetLocale\">\n" \
- " <arg name=\"locale\" type=\"as\" direction=\"in\"/>\n" \
- " <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \
- " </method>\n" \
- " </interface>\n"
-
-#define INTROSPECTION \
- DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
- "<node>\n" \
- INTERFACE \
- BUS_PROPERTIES_INTERFACE \
- BUS_INTROSPECTABLE_INTERFACE \
- BUS_PEER_INTERFACE \
- "</node>\n"
-
-#define INTERFACES_LIST \
- BUS_GENERIC_INTERFACES_LIST \
- "org.freedesktop.locale1\0"
-
-const char locale_interface[] _introspect_("locale1") = INTERFACE;
-
-enum {
- /* We don't list LC_ALL here on purpose. People should be
- * using LANG instead. */
-
- PROP_LANG,
- PROP_LC_CTYPE,
- PROP_LC_NUMERIC,
- PROP_LC_TIME,
- PROP_LC_COLLATE,
- PROP_LC_MONETARY,
- PROP_LC_MESSAGES,
- PROP_LC_PAPER,
- PROP_LC_NAME,
- PROP_LC_ADDRESS,
- PROP_LC_TELEPHONE,
- PROP_LC_MEASUREMENT,
- PROP_LC_IDENTIFICATION,
- _PROP_MAX
-};
-
-static const char * const names[_PROP_MAX] = {
- [PROP_LANG] = "LANG",
- [PROP_LC_CTYPE] = "LC_CTYPE",
- [PROP_LC_NUMERIC] = "LC_NUMERIC",
- [PROP_LC_TIME] = "LC_TIME",
- [PROP_LC_COLLATE] = "LC_COLLATE",
- [PROP_LC_MONETARY] = "LC_MONETARY",
- [PROP_LC_MESSAGES] = "LC_MESSAGES",
- [PROP_LC_PAPER] = "LC_PAPER",
- [PROP_LC_NAME] = "LC_NAME",
- [PROP_LC_ADDRESS] = "LC_ADDRESS",
- [PROP_LC_TELEPHONE] = "LC_TELEPHONE",
- [PROP_LC_MEASUREMENT] = "LC_MEASUREMENT",
- [PROP_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
-};
-
-static char *data[_PROP_MAX] = {
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL
-};
-
-static void free_data(void) {
- int p;
-
- for (p = 0; p < _PROP_MAX; p++) {
- free(data[p]);
- data[p] = NULL;
- }
-}
-
-static void simplify(void) {
- int p;
-
- for (p = 1; p < _PROP_MAX; p++)
- if (isempty(data[p]) || streq_ptr(data[PROP_LANG], data[p])) {
- free(data[p]);
- data[p] = NULL;
- }
-}
-
-static int read_data(void) {
- int r;
-
- free_data();
-
- r = parse_env_file("/etc/locale.conf", NEWLINE,
- "LANG", &data[PROP_LANG],
- "LC_CTYPE", &data[PROP_LC_CTYPE],
- "LC_NUMERIC", &data[PROP_LC_NUMERIC],
- "LC_TIME", &data[PROP_LC_TIME],
- "LC_COLLATE", &data[PROP_LC_COLLATE],
- "LC_MONETARY", &data[PROP_LC_MONETARY],
- "LC_MESSAGES", &data[PROP_LC_MESSAGES],
- "LC_PAPER", &data[PROP_LC_PAPER],
- "LC_NAME", &data[PROP_LC_NAME],
- "LC_ADDRESS", &data[PROP_LC_ADDRESS],
- "LC_TELEPHONE", &data[PROP_LC_TELEPHONE],
- "LC_MEASUREMENT", &data[PROP_LC_MEASUREMENT],
- "LC_IDENTIFICATION", &data[PROP_LC_IDENTIFICATION],
- NULL);
-
- if (r == -ENOENT) {
- int p;
-
- /* Fill in what we got passed from systemd. */
-
- for (p = 0; p < _PROP_MAX; p++) {
- char *e, *d;
-
- assert(names[p]);
-
- e = getenv(names[p]);
- if (e) {
- d = strdup(e);
- if (!d)
- return -ENOMEM;
- } else
- d = NULL;
-
- free(data[p]);
- data[p] = d;
- }
-
- r = 0;
- }
-
- simplify();
- return r;
-}
-
-static int write_data(void) {
- int r, p;
- char **l = NULL;
-
- r = load_env_file("/etc/locale.conf", &l);
- if (r < 0 && r != -ENOENT)
- return r;
-
- for (p = 0; p < _PROP_MAX; p++) {
- char *t, **u;
-
- assert(names[p]);
-
- if (isempty(data[p])) {
- l = strv_env_unset(l, names[p]);
- continue;
- }
-
- if (asprintf(&t, "%s=%s", names[p], data[p]) < 0) {
- strv_free(l);
- return -ENOMEM;
- }
-
- u = strv_env_set(l, t);
- free(t);
- strv_free(l);
-
- if (!u)
- return -ENOMEM;
-
- l = u;
- }
-
- if (strv_isempty(l)) {
-
- if (unlink("/etc/locale.conf") < 0)
- return errno == ENOENT ? 0 : -errno;
-
- return 0;
- }
-
- r = write_env_file("/etc/locale.conf", l);
- strv_free(l);
-
- return r;
-}
-
-static void push_data(DBusConnection *bus) {
- char **l_set = NULL, **l_unset = NULL, **t;
- int c_set = 0, c_unset = 0, p;
- DBusError error;
- DBusMessage *m = NULL, *reply = NULL;
- DBusMessageIter iter, sub;
-
- dbus_error_init(&error);
-
- assert(bus);
-
- l_set = new0(char*, _PROP_MAX);
- l_unset = new0(char*, _PROP_MAX);
- if (!l_set || !l_unset) {
- log_error("Out of memory");
- goto finish;
- }
-
- for (p = 0; p < _PROP_MAX; p++) {
- assert(names[p]);
-
- if (isempty(data[p]))
- l_unset[c_set++] = (char*) names[p];
- else {
- char *s;
-
- if (asprintf(&s, "%s=%s", names[p], data[p]) < 0) {
- log_error("Out of memory");
- goto finish;
- }
-
- l_set[c_unset++] = s;
- }
- }
-
- assert(c_set + c_unset == _PROP_MAX);
- m = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnsetAndSetEnvironment");
- if (!m) {
- log_error("Could not allocate message.");
- goto finish;
- }
-
- dbus_message_iter_init_append(m, &iter);
-
- if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
- log_error("Out of memory.");
- goto finish;
- }
-
- STRV_FOREACH(t, l_unset)
- if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, t)) {
- log_error("Out of memory.");
- goto finish;
- }
-
- if (!dbus_message_iter_close_container(&iter, &sub) ||
- !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
- log_error("Out of memory.");
- goto finish;
- }
-
- STRV_FOREACH(t, l_set)
- if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, t)) {
- log_error("Out of memory.");
- goto finish;
- }
-
- if (!dbus_message_iter_close_container(&iter, &sub)) {
- log_error("Out of memory.");
- goto finish;
- }
-
- reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
- if (!reply) {
- log_error("Failed to set locale information: %s", bus_error_message(&error));
- goto finish;
- }
-
-finish:
- if (m)
- dbus_message_unref(m);
-
- if (reply)
- dbus_message_unref(reply);
-
- dbus_error_free(&error);
-
- strv_free(l_set);
- free(l_unset);
-}
-
-static int append_locale(DBusMessageIter *i, const char *property, void *userdata) {
- int r, c = 0, p;
- char **l;
-
- l = new0(char*, _PROP_MAX+1);
- if (!l)
- return -ENOMEM;
-
- for (p = 0; p < _PROP_MAX; p++) {
- char *t;
-
- if (isempty(data[p]))
- continue;
-
- if (asprintf(&t, "%s=%s", names[p], data[p]) < 0) {
- strv_free(l);
- return -ENOMEM;
- }
-
- l[c++] = t;
- }
-
- r = bus_property_append_strv(i, property, (void*) l);
- strv_free(l);
-
- return r;
-}
-
-static DBusHandlerResult locale_message_handler(
- DBusConnection *connection,
- DBusMessage *message,
- void *userdata) {
-
- const BusProperty properties[] = {
- { "org.freedesktop.locale1", "Locale", append_locale, "as", NULL},
- { NULL, NULL, NULL, NULL, NULL }
- };
-
- DBusMessage *reply = NULL, *changed = NULL;
- DBusError error;
- int r;
-
- assert(connection);
- assert(message);
-
- dbus_error_init(&error);
-
- if (dbus_message_is_method_call(message, "org.freedesktop.locale1", "SetLocale")) {
- char **l = NULL, **i;
- dbus_bool_t interactive;
- DBusMessageIter iter;
- bool modified = false;
- bool passed[_PROP_MAX];
- int p;
-
- if (!dbus_message_iter_init(message, &iter))
- return bus_send_error_reply(connection, message, NULL, -EINVAL);
-
- r = bus_parse_strv_iter(&iter, &l);
- if (r < 0) {
- if (r == -ENOMEM)
- goto oom;
-
- return bus_send_error_reply(connection, message, NULL, r);
- }
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) {
- strv_free(l);
- return bus_send_error_reply(connection, message, NULL, -EINVAL);
- }
-
- dbus_message_iter_get_basic(&iter, &interactive);
-
- zero(passed);
-
- /* Check whether a variable changed and if so valid */
- STRV_FOREACH(i, l) {
- bool valid = false;
-
- for (p = 0; p < _PROP_MAX; p++) {
- size_t k;
-
- k = strlen(names[p]);
- if (startswith(*i, names[p]) && (*i)[k] == '=') {
- valid = true;
- passed[p] = true;
-
- if (!streq_ptr(*i + k + 1, data[p]))
- modified = true;
-
- break;
- }
- }
-
- if (!valid) {
- strv_free(l);
- return bus_send_error_reply(connection, message, NULL, -EINVAL);
- }
- }
-
- /* Check whether a variable is unset */
- if (!modified) {
- for (p = 0; p < _PROP_MAX; p++)
- if (!isempty(data[p]) && !passed[p]) {
- modified = true;
- break;
- }
- }
-
- if (modified) {
-
- r = verify_polkit(connection, message, "org.freedesktop.locale1.set-locale", interactive, &error);
- if (r < 0) {
- strv_free(l);
- return bus_send_error_reply(connection, message, &error, r);
- }
-
- STRV_FOREACH(i, l) {
- for (p = 0; p < _PROP_MAX; p++) {
- size_t k;
-
- k = strlen(names[p]);
- if (startswith(*i, names[p]) && (*i)[k] == '=') {
- char *t;
-
- t = strdup(*i + k + 1);
- if (!t) {
- strv_free(l);
- goto oom;
- }
-
- free(data[p]);
- data[p] = t;
-
- break;
- }
- }
- }
-
- for (p = 0; p < _PROP_MAX; p++) {
- if (passed[p])
- continue;
-
- free(data[p]);
- data[p] = NULL;
- }
-
- simplify();
-
- r = write_data();
- if (r < 0) {
- log_error("Failed to set locale: %s", strerror(-r));
- return bus_send_error_reply(connection, message, NULL, r);
- }
-
- push_data(connection);
-
- log_info("Changed locale information.");
-
- changed = bus_properties_changed_new(
- "/org/freedesktop/locale1",
- "org.freedesktop.locale1",
- "Locale\0");
- if (!changed)
- goto oom;
- }
-
- } else
- return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, properties);
-
- if (!(reply = dbus_message_new_method_return(message)))
- goto oom;
-
- if (!dbus_connection_send(connection, reply, NULL))
- goto oom;
-
- dbus_message_unref(reply);
- reply = NULL;
-
- if (changed) {
-
- if (!dbus_connection_send(connection, changed, NULL))
- goto oom;
-
- dbus_message_unref(changed);
- }
-
- return DBUS_HANDLER_RESULT_HANDLED;
-
-oom:
- if (reply)
- dbus_message_unref(reply);
-
- if (changed)
- dbus_message_unref(changed);
-
- dbus_error_free(&error);
-
- return DBUS_HANDLER_RESULT_NEED_MEMORY;
-}
-
-static int connect_bus(DBusConnection **_bus) {
- static const DBusObjectPathVTable locale_vtable = {
- .message_function = locale_message_handler
- };
- DBusError error;
- DBusConnection *bus = NULL;
- int r;
-
- assert(_bus);
-
- dbus_error_init(&error);
-
- bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
- if (!bus) {
- log_error("Failed to get system D-Bus connection: %s", bus_error_message(&error));
- r = -ECONNREFUSED;
- goto fail;
- }
-
- if (!dbus_connection_register_object_path(bus, "/org/freedesktop/locale1", &locale_vtable, NULL)) {
- log_error("Not enough memory");
- r = -ENOMEM;
- goto fail;
- }
-
- r = dbus_bus_request_name(bus, "org.freedesktop.locale1", DBUS_NAME_FLAG_DO_NOT_QUEUE, &error);
- if (dbus_error_is_set(&error)) {
- log_error("Failed to register name on bus: %s", bus_error_message(&error));
- r = -EEXIST;
- goto fail;
- }
-
- if (r != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
- log_error("Failed to acquire name.");
- r = -EEXIST;
- goto fail;
- }
-
- if (_bus)
- *_bus = bus;
-
- return 0;
-
-fail:
- dbus_connection_close(bus);
- dbus_connection_unref(bus);
-
- dbus_error_free(&error);
-
- return r;
-}
-
-int main(int argc, char *argv[]) {
- int r;
- DBusConnection *bus = NULL;
-
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
-
- umask(0022);
-
- if (argc == 2 && streq(argv[1], "--introspect")) {
- fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
- "<node>\n", stdout);
- fputs(locale_interface, stdout);
- fputs("</node>\n", stdout);
- return 0;
- }
-
- if (argc != 1) {
- log_error("This program takes no arguments.");
- r = -EINVAL;
- goto finish;
- }
-
- r = read_data();
- if (r < 0) {
- log_error("Failed to read locale data: %s", strerror(-r));
- goto finish;
- }
-
- r = connect_bus(&bus);
- if (r < 0)
- goto finish;
-
- while (dbus_connection_read_write_dispatch(bus, -1))
- ;
-
- r = 0;
-
-finish:
- free_data();
-
- if (bus) {
- dbus_connection_flush(bus);
- dbus_connection_close(bus);
- dbus_connection_unref(bus);
- }
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / blobdiff