idleirc/server.php

<?php 
///////
// IdleIRC - 2020
// (C) Chris Dorman, GPLv3
// https://notabug.org/Pentium44/idleirc
///////

// server.php - used to communicate between web frontend and irc client
// Grabs from IRC client output
// Pushes to IRC client input

// Include PHP config file with server, title, and channel settings
include_once("config.php");

session_start();

if(isset($_GET['msg'])) {
	doLog("Msg information: " . trim($_GET['msg']));
}

$acctpass = $_SESSION['idleirc-pass'];
$channel = $_SESSION['idleirc-channel'];
$servaddr = $_SESSION['idleirc-servaddr'];
$servport = $_SESSION['idleirc-servport'];

// If we have a message; grab user and content and push to IRC client
if (isset($_GET['msg']) && $_GET['msg']!="" && isset($_GET['nick']) && $_GET['nick']!=""){		
	$nick = stripslashes(htmlentities($_GET['nick'])); // Usernick
	$msg  = urldecode(stripslashes(trim($_GET['msg']))); // User message content
	$line = ""; // start with nothing
	$logline = ""; // start with nothing

	// Seperate message input via space
	$cmd = explode(" ", $msg);
	if($cmd[0]=="/msg") { // If using /msg, push private message
		$prvmsg = array_splice($cmd, 2); // grab private message from string
		$line .= "PRIVMSG" . " " . $cmd[1] . " "; // set for push
		$x = 0;
		$logline .= "<tr><td class='userinfo'><b>$nick</b> -> " . $cmd[1] . ": </td><td>";
		foreach($prvmsg as $word) {
			// Grab each word in the array after the privmsg username
			if($x == 0) {
				$line .= ":" . $word;
				$logline .= $word;
			} else {
				$line .= " " . $word;
				$logline .= " " . $word;
			}
			$x++;
		}
		$line .= "\n";
		$logline .= "</td></tr>\n";
	} else if($cmd[0]=="/me") { // If using /msg, push private message
		$prvmsg = array_splice($cmd, 1); // grab private message from string
		$line .= "PRIVMSG" . " " . $channel . " :\x01ACTION "; // set for push
		$x = 0;
		$logline .= "<tr><td class='userinfo'><b>$channel:</b></td><td> $nick ";
		foreach($prvmsg as $word) {
			// Grab each word in the array after the privmsg username
			if($x == 0) {
				$line .= $word;
				$logline .= $word;
			} else {
				$line .= " " . $word;
				$logline .= " " . $word;
			}
			$x++;
		}
		$logline .= "</td></tr>\n";
		$line .= "\x01\n";
	} else if ($cmd[0]=="/join") {
		doLog("$username: joining " . $cmd[1]);
		$line .= "JOIN" . " " . $cmd[1] . "\n"; // set for push
		$logline .= "<tr><td class='userinfo'><b>$nick</b>:</td><td>Joining " . $cmd[1] . "</td></tr>\n"; // push to client
		$_SESSION['idleirc-channel'] = trim($cmd[1]);
	} else if ($cmd[0] == "/part") {
		doLog("$username: leaving " . $cmd[1]);
                $line .= "PART $channel :$username leaving...\n"; // push close command to IRC
                $logline .= "<tr><td class='userinfo'><b>$nick</b>: </td><td>Leaving $channel</td></tr>\n"; // push to client
	} else if ($cmd[0] == "/focus") {
		if(trim($cmd[1]) != $channel) {
			$_SESSION['idleirc-channel'] = trim($cmd[1]);
			$logline .= "<tr><td class='userinfo'><span style='color:$ipcolor;'>$servaddr</b>: </td><td>$channel is focused, all messages will be sent to $channel</td></tr>\n"; // push to client
		}
	} else {
		// @@ This is a work in progress
		// Sends every channel message to each channel :[
		$line .= "PRIVMSG $channel :$msg\n";
		$logline .= "<tr><td class='userinfo'><b>$nick</b> in $channel:</td><td> $msg</td></tr>\n";
	}
	
	// Get original content
	$content = file_get_contents("$nick.log");
	echo "<table>" . nl2br(stripslashes($content)) . "</table>";
	// Grab all contents, and push to socket output file.
	file_put_contents("$nick.log", $content . $logline);
	// Grab user message and push to IRC client
	file_put_contents(".$nick.push", $line);
	// Throw out your user message
	//echo nl2br(stripslashes($line));
	// DONE
		
} else if (isset($_GET['get']) && isset($_GET['nick']) && $_GET['nick']!="") {
	$nick = stripslashes(htmlentities($_GET['nick'])); // Username
	// Grab IRC client output
	$content = file_get_contents("$nick.log");
	// Push content to the web frontend
	echo "<table>" . nl2br(stripslashes($content)) . "</table";
	// DONE
} else if (isset($_GET['do']) && isset($_GET['nick']) && $_GET['nick']!="") {
	$nick = stripslashes(htmlentities($_GET['nick']));
	include("users/" . $nick . ".php");
	if ($_GET['do']=="clearlog") {
		if(file_exists($nick . ".log") && ($acctpass == $userpass)) {
			unlink($nick . ".log");
		}
	} else if($_GET['do']=="login" && !file_exists(".$nick.pingfile") && ($acctpass == $userpass)) { // Is user asking for login?
		// Join channel
		if(!isset($_SESSION['idleirc-channel'])) {
			file_put_contents(".$nick.push", "JOIN " . $default_channel . "\n");
		} else {
			file_put_contents(".$nick.push", "JOIN " . $channel . "\n");
		}
		
		// Make sure users DB is clean, put nothing into socket read file
		if(!file_exists("$nick.log")) {
			file_put_contents("$nick.log", "");
			chmod("$username.log", 0755); // file permissions for read / write
		}

		// start pingfile - determines if webclient is active via write timestamp 
		file_put_contents(".$nick.pingfile", "pong");
		chmod(".$username.pingfile", 0755); // file permissions for read / write
		
		// Execute IRC client in background
		// IRC server will die when either 1) pingfile is deleted, or
		// 2) if pingfile is older than 10 seconds of current sys time
		$realpath = realpath("./irc.php"); // get full file path
		
		// Execute IRC client
		shell_exec("/usr/bin/php $realpath $nick $servaddr $servport > /dev/null 2>/dev/null &"); 
	} else if($_GET['do']=="logout" && ($acctpass == $userpass)) { // Is user asking for logout?
		// Remove ping file if user logs out. IRC server will close
		$content = file_get_contents("$nick.log");
		file_put_contents("$nick.log", $content . "<tr><td class='userinfo'><b>$nick</b> ~ </td><td> left the server...</td></tr>\n");
		unlink(".$nick.pingfile");
	} else if($_GET['do']=="keepup") { // Client asking for keepup ping.
		// PONG to server.
		//file_put_contents(".$nick.pingfile", "ping");
	}
}
?>