mirror of
https://github.com/FeralInteractive/gamemode.git
synced 2025-06-06 07:37:21 +02:00
141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
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Copyright (c) 2017-2019, Feral Interactive
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Feral Interactive nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#define _GNU_SOURCE
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#include <dlfcn.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <systemd/sd-bus.h>
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#include <unistd.h>
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// Storage for error strings
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static char error_string[512] = { 0 };
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// Simple requestor function for a gamemode
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static int gamemode_request(const char *function, int arg)
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{
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sd_bus_message *msg = NULL;
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sd_bus *bus = NULL;
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sd_bus_error err;
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memset(&err, 0, sizeof(err));
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int result = -1;
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// Open the user bus
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int ret = sd_bus_open_user(&bus);
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if (ret < 0) {
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snprintf(error_string,
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sizeof(error_string),
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"Could not connect to bus: %s",
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strerror(-ret));
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} else {
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// Attempt to send the requested function
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ret = sd_bus_call_method(bus,
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"com.feralinteractive.GameMode",
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"/com/feralinteractive/GameMode",
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"com.feralinteractive.GameMode",
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function,
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&err,
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&msg,
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arg ? "ii" : "i",
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getpid(),
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arg);
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if (ret < 0) {
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snprintf(error_string,
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sizeof(error_string),
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"Could not call method %s on com.feralinteractive.GameMode\n"
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"\t%s\n"
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"\t%s\n"
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"\t%s\n",
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function,
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err.name,
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err.message,
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strerror(-ret));
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} else {
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// Read the reply
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ret = sd_bus_message_read(msg, "i", &result);
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if (ret < 0) {
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snprintf(error_string,
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sizeof(error_string),
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"Failure to parse response: %s",
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strerror(-ret));
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}
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}
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}
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return result;
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}
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// Get the error string
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extern const char *real_gamemode_error_string(void)
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{
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return error_string;
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}
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// Wrapper to call RegisterGame
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extern int real_gamemode_request_start(void)
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{
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return gamemode_request("RegisterGame", 0);
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}
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// Wrapper to call UnregisterGame
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extern int real_gamemode_request_end(void)
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{
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return gamemode_request("UnregisterGame", 0);
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}
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// Wrapper to call QueryStatus
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extern int real_gamemode_query_status(void)
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{
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return gamemode_request("QueryStatus", 0);
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}
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// Wrapper to call RegisterGameByPID
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extern int real_gamemode_request_start_for(pid_t pid)
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{
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return gamemode_request("RegisterGameByPID", pid);
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}
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// Wrapper to call UnregisterGameByPID
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extern int real_gamemode_request_end_for(pid_t pid)
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{
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return gamemode_request("UnregisterGameByPID", pid);
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}
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// Wrapper to call QueryStatusByPID
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extern int real_gamemode_query_status_for(pid_t pid)
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{
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return gamemode_request("QueryStatusByPID", pid);
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}
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