1233 lines
34 KiB
C
1233 lines
34 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <sys/socket.h>
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#include <sys/capability.h>
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#include "util.h"
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#include "strv.h"
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#include "macro.h"
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#include "def.h"
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#include "missing.h"
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#include "sd-event.h"
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#include "sd-bus.h"
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#include "bus-error.h"
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#include "bus-message.h"
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#include "bus-util.h"
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#include "bus-internal.h"
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static int name_owner_change_callback(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
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sd_event *e = userdata;
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assert(bus);
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assert(m);
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assert(e);
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sd_event_exit(e, 0);
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return 1;
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}
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int bus_async_unregister_and_exit(sd_event *e, sd_bus *bus, const char *name) {
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_cleanup_free_ char *match = NULL;
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const char *unique;
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int r;
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assert(e);
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assert(bus);
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assert(name);
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/* We unregister the name here and then wait for the
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* NameOwnerChanged signal for this event to arrive before we
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* quit. We do this in order to make sure that any queued
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* requests are still processed before we really exit. */
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r = sd_bus_get_unique_name(bus, &unique);
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if (r < 0)
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return r;
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r = asprintf(&match,
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"sender='org.freedesktop.DBus',"
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"type='signal',"
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"interface='org.freedesktop.DBus',"
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"member='NameOwnerChanged',"
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"path='/org/freedesktop/DBus',"
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"arg0='%s',"
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"arg1='%s',"
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"arg2=''", name, unique);
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if (r < 0)
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return -ENOMEM;
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r = sd_bus_add_match(bus, match, name_owner_change_callback, e);
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if (r < 0)
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return r;
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r = sd_bus_release_name(bus, name);
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if (r < 0)
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return r;
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return 0;
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}
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int bus_event_loop_with_idle(
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sd_event *e,
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sd_bus *bus,
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const char *name,
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usec_t timeout,
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check_idle_t check_idle,
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void *userdata) {
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bool exiting = false;
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int r, code;
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assert(e);
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assert(bus);
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assert(name);
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for (;;) {
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bool idle;
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r = sd_event_get_state(e);
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if (r < 0)
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return r;
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if (r == SD_EVENT_FINISHED)
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break;
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if (check_idle)
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idle = check_idle(userdata);
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else
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idle = true;
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r = sd_event_run(e, exiting || !idle ? (uint64_t) -1 : timeout);
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if (r < 0)
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return r;
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if (r == 0 && !exiting) {
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r = bus_async_unregister_and_exit(e, bus, name);
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if (r < 0)
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return r;
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exiting = true;
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}
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}
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r = sd_event_get_exit_code(e, &code);
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if (r < 0)
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return r;
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return code;
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}
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int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) {
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_cleanup_bus_message_unref_ sd_bus_message *rep = NULL;
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int r, has_owner = 0;
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assert(c);
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assert(name);
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r = sd_bus_call_method(c,
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"org.freedesktop.DBus",
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"/org/freedesktop/dbus",
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"org.freedesktop.DBus",
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"NameHasOwner",
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error,
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&rep,
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"s",
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name);
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if (r < 0)
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return r;
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r = sd_bus_message_read_basic(rep, 'b', &has_owner);
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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return has_owner;
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}
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int bus_verify_polkit(
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sd_bus *bus,
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sd_bus_message *m,
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const char *action,
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bool interactive,
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bool *_challenge,
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sd_bus_error *e) {
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_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
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uid_t uid;
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int r;
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assert(bus);
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assert(m);
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assert(action);
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r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID, &creds);
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if (r < 0)
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return r;
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r = sd_bus_creds_get_uid(creds, &uid);
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if (r < 0)
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return r;
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if (uid == 0)
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return 1;
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#ifdef ENABLE_POLKIT
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else {
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_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
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int authorized = false, challenge = false;
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const char *sender;
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sender = sd_bus_message_get_sender(m);
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if (!sender)
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return -EBADMSG;
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r = sd_bus_call_method(
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bus,
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"org.freedesktop.PolicyKit1",
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"/org/freedesktop/PolicyKit1/Authority",
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"org.freedesktop.PolicyKit1.Authority",
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"CheckAuthorization",
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e,
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&reply,
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"(sa{sv})sa{ss}us",
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"system-bus-name", 1, "name", "s", sender,
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action,
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0,
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interactive ? 1 : 0,
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"");
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if (r < 0) {
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/* Treat no PK available as access denied */
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if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) {
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sd_bus_error_free(e);
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return -EACCES;
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}
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return r;
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}
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r = sd_bus_message_enter_container(reply, 'r', "bba{ss}");
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if (r < 0)
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return r;
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r = sd_bus_message_read(reply, "bb", &authorized, &challenge);
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if (r < 0)
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return r;
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if (authorized)
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return 1;
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if (_challenge) {
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*_challenge = challenge;
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return 0;
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}
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}
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#endif
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return -EACCES;
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}
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#ifdef ENABLE_POLKIT
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typedef struct AsyncPolkitQuery {
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sd_bus_message *request, *reply;
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sd_bus_message_handler_t callback;
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void *userdata;
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uint64_t serial;
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Hashmap *registry;
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} AsyncPolkitQuery;
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static void async_polkit_query_free(sd_bus *b, AsyncPolkitQuery *q) {
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if (!q)
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return;
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if (q->serial > 0 && b)
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sd_bus_call_async_cancel(b, q->serial);
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if (q->registry && q->request)
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hashmap_remove(q->registry, q->request);
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sd_bus_message_unref(q->request);
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sd_bus_message_unref(q->reply);
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free(q);
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}
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static int async_polkit_callback(sd_bus *bus, sd_bus_message *reply, void *userdata, sd_bus_error *error) {
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_cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
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AsyncPolkitQuery *q = userdata;
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int r;
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assert(bus);
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assert(reply);
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assert(q);
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q->reply = sd_bus_message_ref(reply);
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q->serial = 0;
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r = sd_bus_message_rewind(q->request, true);
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if (r < 0) {
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r = sd_bus_reply_method_errno(q->request, r, NULL);
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goto finish;
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}
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r = q->callback(bus, q->request, q->userdata, &error_buffer);
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r = bus_maybe_reply_error(q->request, r, &error_buffer);
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finish:
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async_polkit_query_free(bus, q);
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return r;
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}
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#endif
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int bus_verify_polkit_async(
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sd_bus *bus,
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Hashmap **registry,
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sd_bus_message *m,
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const char *action,
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bool interactive,
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sd_bus_error *error,
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sd_bus_message_handler_t callback,
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void *userdata) {
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#ifdef ENABLE_POLKIT
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_cleanup_bus_message_unref_ sd_bus_message *pk = NULL;
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AsyncPolkitQuery *q;
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const char *sender;
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#endif
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_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
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uid_t uid;
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int r;
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assert(bus);
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assert(registry);
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assert(m);
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assert(action);
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#ifdef ENABLE_POLKIT
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q = hashmap_get(*registry, m);
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if (q) {
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int authorized, challenge;
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/* This is the second invocation of this function, and
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* there's already a response from polkit, let's
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* process it */
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assert(q->reply);
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if (sd_bus_message_is_method_error(q->reply, NULL)) {
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const sd_bus_error *e;
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/* Copy error from polkit reply */
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e = sd_bus_message_get_error(q->reply);
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sd_bus_error_copy(error, e);
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/* Treat no PK available as access denied */
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if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN))
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return -EACCES;
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return -sd_bus_error_get_errno(e);
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}
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r = sd_bus_message_enter_container(q->reply, 'r', "bba{ss}");
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if (r >= 0)
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r = sd_bus_message_read(q->reply, "bb", &authorized, &challenge);
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if (r < 0)
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return r;
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if (authorized)
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return 1;
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return -EACCES;
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}
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#endif
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r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID, &creds);
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if (r < 0)
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return r;
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r = sd_bus_creds_get_uid(creds, &uid);
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if (r < 0)
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return r;
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if (uid == 0)
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return 1;
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#ifdef ENABLE_POLKIT
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sender = sd_bus_message_get_sender(m);
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if (!sender)
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return -EBADMSG;
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r = hashmap_ensure_allocated(registry, trivial_hash_func, trivial_compare_func);
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if (r < 0)
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return r;
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r = sd_bus_message_new_method_call(
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bus,
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"org.freedesktop.PolicyKit1",
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"/org/freedesktop/PolicyKit1/Authority",
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"org.freedesktop.PolicyKit1.Authority",
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"CheckAuthorization",
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&pk);
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if (r < 0)
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return r;
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r = sd_bus_message_append(
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pk,
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"(sa{sv})sa{ss}us",
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"system-bus-name", 1, "name", "s", sender,
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action,
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0,
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interactive ? 1 : 0,
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NULL);
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if (r < 0)
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return r;
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q = new0(AsyncPolkitQuery, 1);
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if (!q)
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return -ENOMEM;
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q->request = sd_bus_message_ref(m);
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q->callback = callback;
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q->userdata = userdata;
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r = hashmap_put(*registry, m, q);
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if (r < 0) {
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async_polkit_query_free(bus, q);
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return r;
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}
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q->registry = *registry;
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r = sd_bus_call_async(bus, pk, async_polkit_callback, q, 0, &q->serial);
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if (r < 0) {
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async_polkit_query_free(bus, q);
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return r;
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}
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return 0;
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#endif
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return -EACCES;
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}
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void bus_verify_polkit_async_registry_free(sd_bus *bus, Hashmap *registry) {
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#ifdef ENABLE_POLKIT
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AsyncPolkitQuery *q;
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while ((q = hashmap_steal_first(registry)))
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async_polkit_query_free(bus, q);
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hashmap_free(registry);
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#endif
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}
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int bus_check_peercred(sd_bus *c) {
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struct ucred ucred;
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socklen_t l;
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int fd;
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assert(c);
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fd = sd_bus_get_fd(c);
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if (fd < 0)
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return fd;
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l = sizeof(struct ucred);
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if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
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return -errno;
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if (l != sizeof(struct ucred))
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return -E2BIG;
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if (ucred.uid != 0 && ucred.uid != geteuid())
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return -EPERM;
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return 1;
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}
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int bus_open_system_systemd(sd_bus **_bus) {
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_cleanup_bus_unref_ sd_bus *bus = NULL;
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int r;
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assert(_bus);
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if (geteuid() != 0)
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return sd_bus_open_system(_bus);
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/* If we are root and kdbus is not available, then let's talk
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* directly to the system instance, instead of going via the
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* bus */
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#ifdef ENABLE_KDBUS
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r = sd_bus_new(&bus);
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if (r < 0)
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return r;
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r = sd_bus_set_address(bus, "kernel:path=/dev/kdbus/0-system/bus");
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if (r < 0)
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return r;
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bus->bus_client = true;
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r = sd_bus_start(bus);
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if (r >= 0) {
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*_bus = bus;
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bus = NULL;
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return 0;
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}
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bus = sd_bus_unref(bus);
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#endif
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r = sd_bus_new(&bus);
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if (r < 0)
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return r;
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r = sd_bus_set_address(bus, "unix:path=/run/systemd/private");
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if (r < 0)
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return r;
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|
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r = sd_bus_start(bus);
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if (r < 0)
|
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return sd_bus_open_system(_bus);
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|
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r = bus_check_peercred(bus);
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if (r < 0)
|
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return r;
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|
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*_bus = bus;
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bus = NULL;
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|
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return 0;
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}
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|
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int bus_open_user_systemd(sd_bus **_bus) {
|
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_cleanup_bus_unref_ sd_bus *bus = NULL;
|
|
_cleanup_free_ char *ee = NULL;
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const char *e;
|
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int r;
|
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|
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/* Try via kdbus first, and then directly */
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|
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assert(_bus);
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|
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#ifdef ENABLE_KDBUS
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r = sd_bus_new(&bus);
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if (r < 0)
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return r;
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|
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if (asprintf(&bus->address, "kernel:path=/dev/kdbus/%lu-user/bus", (unsigned long) getuid()) < 0)
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return -ENOMEM;
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|
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bus->bus_client = true;
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|
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r = sd_bus_start(bus);
|
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if (r >= 0) {
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*_bus = bus;
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bus = NULL;
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return 0;
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}
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|
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bus = sd_bus_unref(bus);
|
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#endif
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|
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e = secure_getenv("XDG_RUNTIME_DIR");
|
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if (!e)
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return sd_bus_open_system(_bus);
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|
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ee = bus_address_escape(e);
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if (!ee)
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return -ENOMEM;
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|
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r = sd_bus_new(&bus);
|
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if (r < 0)
|
|
return r;
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|
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bus->address = strjoin("unix:path=", ee, "/systemd/private", NULL);
|
|
if (!bus->address)
|
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return -ENOMEM;
|
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|
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r = sd_bus_start(bus);
|
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if (r < 0)
|
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return sd_bus_open_system(_bus);
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|
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r = bus_check_peercred(bus);
|
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if (r < 0)
|
|
return r;
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|
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*_bus = bus;
|
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bus = NULL;
|
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|
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return 0;
|
|
}
|
|
|
|
int bus_print_property(const char *name, sd_bus_message *property, bool all) {
|
|
char type;
|
|
const char *contents;
|
|
int r;
|
|
|
|
assert(name);
|
|
assert(property);
|
|
|
|
r = sd_bus_message_peek_type(property, &type, &contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
switch (type) {
|
|
|
|
case SD_BUS_TYPE_STRING: {
|
|
const char *s;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &s);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (all || !isempty(s))
|
|
printf("%s=%s\n", name, s);
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_BOOLEAN: {
|
|
bool b;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &b);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%s\n", name, yes_no(b));
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT64: {
|
|
uint64_t u;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &u);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
/* Yes, heuristics! But we can change this check
|
|
* should it turn out to not be sufficient */
|
|
|
|
if (endswith(name, "Timestamp")) {
|
|
char timestamp[FORMAT_TIMESTAMP_MAX], *t;
|
|
|
|
t = format_timestamp(timestamp, sizeof(timestamp), u);
|
|
if (t || all)
|
|
printf("%s=%s\n", name, strempty(t));
|
|
|
|
} else if (strstr(name, "USec")) {
|
|
char timespan[FORMAT_TIMESPAN_MAX];
|
|
|
|
printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u, 0));
|
|
} else
|
|
printf("%s=%llu\n", name, (unsigned long long) u);
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT32: {
|
|
uint32_t u;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &u);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (strstr(name, "UMask") || strstr(name, "Mode"))
|
|
printf("%s=%04o\n", name, u);
|
|
else
|
|
printf("%s=%u\n", name, (unsigned) u);
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_INT32: {
|
|
int32_t i;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &i);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%i\n", name, (int) i);
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_DOUBLE: {
|
|
double d;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%g\n", name, d);
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_ARRAY:
|
|
if (streq(contents, "s")) {
|
|
bool first = true;
|
|
const char *str;
|
|
|
|
r = sd_bus_message_enter_container(property, SD_BUS_TYPE_ARRAY, contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while((r = sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str)) > 0) {
|
|
if (first)
|
|
printf("%s=", name);
|
|
|
|
printf("%s%s", first ? "" : " ", str);
|
|
|
|
first = false;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (first && all)
|
|
printf("%s=", name);
|
|
if (!first || all)
|
|
puts("");
|
|
|
|
r = sd_bus_message_exit_container(property);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 1;
|
|
|
|
} else if (streq(contents, "y")) {
|
|
const uint8_t *u;
|
|
size_t n;
|
|
|
|
r = sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, (const void**) &u, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (all || n > 0) {
|
|
unsigned int i;
|
|
|
|
printf("%s=", name);
|
|
|
|
for (i = 0; i < n; i++)
|
|
printf("%02x", u[i]);
|
|
|
|
puts("");
|
|
}
|
|
|
|
return 1;
|
|
|
|
} else if (streq(contents, "u")) {
|
|
uint32_t *u;
|
|
size_t n;
|
|
|
|
r = sd_bus_message_read_array(property, SD_BUS_TYPE_UINT32, (const void**) &u, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (all || n > 0) {
|
|
unsigned int i;
|
|
|
|
printf("%s=", name);
|
|
|
|
for (i = 0; i < n; i++)
|
|
printf("%08x", u[i]);
|
|
|
|
puts("");
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool all) {
|
|
_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(path);
|
|
|
|
r = sd_bus_call_method(bus,
|
|
dest,
|
|
path,
|
|
"org.freedesktop.DBus.Properties",
|
|
"GetAll",
|
|
&error,
|
|
&reply,
|
|
"s", "");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
|
|
const char *name;
|
|
const char *contents;
|
|
|
|
r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &name);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!filter || strv_find(filter, name)) {
|
|
r = sd_bus_message_peek_type(reply, NULL, &contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = bus_print_property(name, reply, all);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0) {
|
|
if (all)
|
|
printf("%s=[unprintable]\n", name);
|
|
/* skip what we didn't read */
|
|
r = sd_bus_message_skip(reply, contents);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
} else {
|
|
r = sd_bus_message_skip(reply, "v");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_exit_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
|
|
sd_id128_t *p = userdata;
|
|
const void *v;
|
|
size_t n;
|
|
int r;
|
|
|
|
r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (n == 0)
|
|
*p = SD_ID128_NULL;
|
|
else if (n == 16)
|
|
memcpy((*p).bytes, v, n);
|
|
else
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
|
|
char type;
|
|
int r;
|
|
|
|
r = sd_bus_message_peek_type(m, &type, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
switch (type) {
|
|
case SD_BUS_TYPE_STRING: {
|
|
const char *s;
|
|
char *str;
|
|
char **p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &s);
|
|
if (r < 0)
|
|
break;
|
|
|
|
if (isempty(s))
|
|
break;
|
|
|
|
str = strdup(s);
|
|
if (!str) {
|
|
r = -ENOMEM;
|
|
break;
|
|
}
|
|
free(*p);
|
|
*p = str;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_ARRAY: {
|
|
_cleanup_strv_free_ char **l = NULL;
|
|
char ***p = userdata;
|
|
|
|
r = bus_message_read_strv_extend(m, &l);
|
|
if (r < 0)
|
|
break;
|
|
|
|
strv_free(*p);
|
|
*p = l;
|
|
l = NULL;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_BOOLEAN: {
|
|
unsigned b;
|
|
bool *p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &b);
|
|
if (r < 0)
|
|
break;
|
|
|
|
*p = b;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT32: {
|
|
uint64_t u;
|
|
uint32_t *p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &u);
|
|
if (r < 0)
|
|
break;
|
|
|
|
*p = u;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT64: {
|
|
uint64_t t;
|
|
uint64_t *p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &t);
|
|
if (r < 0)
|
|
break;
|
|
|
|
*p = t;
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_map_all_properties(sd_bus *bus,
|
|
const char *destination,
|
|
const char *path,
|
|
const struct bus_properties_map *map,
|
|
void *userdata) {
|
|
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(destination);
|
|
assert(path);
|
|
assert(map);
|
|
|
|
r = sd_bus_call_method(
|
|
bus,
|
|
destination,
|
|
path,
|
|
"org.freedesktop.DBus.Properties",
|
|
"GetAll",
|
|
&error,
|
|
&m,
|
|
"s", "");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
|
|
const struct bus_properties_map *prop;
|
|
const char *member;
|
|
const char *contents;
|
|
void *v;
|
|
unsigned i;
|
|
|
|
r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
for (i = 0, prop = NULL; map[i].member; i++)
|
|
if (streq(map[i].member, member)) {
|
|
prop = &map[i];
|
|
break;
|
|
}
|
|
|
|
if (prop) {
|
|
r = sd_bus_message_peek_type(m, NULL, &contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
v = (uint8_t *)userdata + prop->offset;
|
|
if (map[i].set)
|
|
r = prop->set(bus, member, m, &error, v);
|
|
else
|
|
r = map_basic(bus, member, m, &error, v);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
} else {
|
|
r = sd_bus_message_skip(m, "v");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_open_transport(BusTransport transport, const char *host, bool user, sd_bus **bus) {
|
|
int r;
|
|
|
|
assert(transport >= 0);
|
|
assert(transport < _BUS_TRANSPORT_MAX);
|
|
assert(bus);
|
|
|
|
assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL);
|
|
assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -ENOTSUP);
|
|
|
|
switch (transport) {
|
|
|
|
case BUS_TRANSPORT_LOCAL:
|
|
if (user)
|
|
r = sd_bus_default_user(bus);
|
|
else
|
|
r = sd_bus_default_system(bus);
|
|
|
|
break;
|
|
|
|
case BUS_TRANSPORT_REMOTE:
|
|
r = sd_bus_open_system_remote(host, bus);
|
|
break;
|
|
|
|
case BUS_TRANSPORT_CONTAINER:
|
|
r = sd_bus_open_system_container(host, bus);
|
|
break;
|
|
|
|
default:
|
|
assert_not_reached("Hmm, unknown transport type.");
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_open_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus) {
|
|
int r;
|
|
|
|
assert(transport >= 0);
|
|
assert(transport < _BUS_TRANSPORT_MAX);
|
|
assert(bus);
|
|
|
|
assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL);
|
|
assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -ENOTSUP);
|
|
|
|
switch (transport) {
|
|
|
|
case BUS_TRANSPORT_LOCAL:
|
|
if (user)
|
|
r = bus_open_user_systemd(bus);
|
|
else
|
|
r = bus_open_system_systemd(bus);
|
|
|
|
break;
|
|
|
|
case BUS_TRANSPORT_REMOTE:
|
|
r = sd_bus_open_system_remote(host, bus);
|
|
break;
|
|
|
|
case BUS_TRANSPORT_CONTAINER:
|
|
r = sd_bus_open_system_container(host, bus);
|
|
break;
|
|
|
|
default:
|
|
assert_not_reached("Hmm, unknown transport type.");
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_property_get_tristate(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
int *tristate = userdata;
|
|
|
|
return sd_bus_message_append(reply, "b", *tristate > 0);
|
|
}
|
|
|
|
int bus_property_get_bool(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
int b = *(bool*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 'b', &b);
|
|
}
|
|
|
|
#if __SIZEOF_SIZE_T__ != 8
|
|
int bus_property_get_size(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
uint64_t sz = *(size_t*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 't', &sz);
|
|
}
|
|
#endif
|
|
|
|
#if __SIZEOF_LONG__ != 8
|
|
int bus_property_get_long(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
int64_t l = *(long*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 'x', &l);
|
|
}
|
|
|
|
int bus_property_get_ulong(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
uint64_t ul = *(unsigned long*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 't', &ul);
|
|
}
|
|
#endif
|
|
|
|
int bus_log_parse_error(int r) {
|
|
log_error("Failed to parse message: %s", strerror(-r));
|
|
return r;
|
|
}
|
|
|
|
int bus_log_create_error(int r) {
|
|
log_error("Failed to create message: %s", strerror(-r));
|
|
return r;
|
|
}
|
|
|
|
int bus_parse_unit_info(sd_bus_message *message, UnitInfo *u) {
|
|
assert(message);
|
|
assert(u);
|
|
|
|
return sd_bus_message_read(
|
|
message,
|
|
"(ssssssouso)",
|
|
&u->id,
|
|
&u->description,
|
|
&u->load_state,
|
|
&u->active_state,
|
|
&u->sub_state,
|
|
&u->following,
|
|
&u->unit_path,
|
|
&u->job_id,
|
|
&u->job_type,
|
|
&u->job_path);
|
|
}
|
|
|
|
int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error) {
|
|
assert(m);
|
|
|
|
if (r < 0) {
|
|
if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
|
|
sd_bus_reply_method_errno(m, r, error);
|
|
|
|
} else if (sd_bus_error_is_set(error)) {
|
|
if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
|
|
sd_bus_reply_method_error(m, error);
|
|
} else
|
|
return r;
|
|
|
|
log_debug("Failed to process message [type=%s sender=%s path=%s interface=%s member=%s signature=%s]: %s",
|
|
bus_message_type_to_string(m->header->type),
|
|
strna(m->sender),
|
|
strna(m->path),
|
|
strna(m->interface),
|
|
strna(m->member),
|
|
strna(m->root_container.signature),
|
|
bus_error_message(error, r));
|
|
|
|
return 1;
|
|
}
|