codiad/components/user/class.user.php

<?php

/*
*  Copyright (c) Codiad & Kent Safranski (codiad.com), distributed
*  as-is and without warranty under the MIT License. See
*  [root]/license.txt for more. This information must remain intact.
*/

class User {
	
	//////////////////////////////////////////////////////////////////
	// PROPERTIES
	//////////////////////////////////////////////////////////////////
	
	public $username    = '';
	public $password    = '';
	public $project     = '';
	public $projects    = '';
	public $users       = '';
	public $actives     = '';
	public $lang        = '';
	public $theme       = '';
	
	//////////////////////////////////////////////////////////////////
	// METHODS
	//////////////////////////////////////////////////////////////////
	
	// -----------------------------||----------------------------- //
	
	//////////////////////////////////////////////////////////////////
	// Construct
	//////////////////////////////////////////////////////////////////
	
	public function __construct() {
		
		$this->users = getJSON( 'users.php' );
		$this->actives = getJSON( 'active.php' );
	}
	
	//////////////////////////////////////////////////////////////////
	// Authenticate
	//////////////////////////////////////////////////////////////////
	
	public function Authenticate() {
		
		if( ! is_dir( SESSIONS_PATH ) ) {
			
			mkdir( SESSIONS_PATH, 00755 );
		}
		
		$permissions = array(
			"755",
			"0755"
		);
		
		$server_user = posix_getpwuid( posix_geteuid() );
		$sessions_permissions = substr( sprintf( '%o', fileperms( SESSIONS_PATH ) ), -4 );
		$sessions_owner = posix_getpwuid( fileowner( SESSIONS_PATH ) );
		
		if( ! ( $sessions_owner === $server_user ) ) {
			
			try {
				
				chown( SESSIONS_PATH, $server_user );
			} catch( Exception $e ) {
				
				echo( formatJSEND("error", "Error, incorrect owner of sessions folder.  Expecting: $server_user, Recieved: " . $sessions_owner ) );
				return;
			}
		}
		
		if( ! in_array( $sessions_permissions, $permissions ) ) {
			
			try {
				
				chmod( SESSIONS_PATH, 00755 );
			} catch( Exception $e ) {
				
				echo( formatJSEND("error", "Error, incorrect permissions on sessions folder.  Expecting: 0755, Recieved: " . $sessions_permissions ) );
				return;
			}
		}
		
		$pass = false;
		
		$this->EncryptPassword();
		$users = getJSON('users.php');
		foreach( $users as $user ) {
			
			if( $user['username'] == $this->username && $user['password'] == $this->password ) {
				
				$pass = true;
				$_SESSION['id'] = SESSION_ID;
				$_SESSION['user'] = $this->username;
				$_SESSION['lang'] = $this->lang;
				$_SESSION['theme'] = $this->theme;
				$_SESSION["login_session"] = true;
				
				if($user['project']!='') {
					
					$_SESSION['project'] = $user['project'];
				}
				
				$this->checkDuplicateSessions( $this->username );
			}
		}
		
		if( $pass ) {
			
			echo formatJSEND( "success", array( "username" => $this->username ) );
		} else {
			
			echo formatJSEND( "error", "Incorrect Username or Password" );
		}
	}
	
	/**
	* Check duplicate sessions
	* 
	* This function checks to see if the user is currently logged in
	* on any other machine and if they are then log them off.  This
	* will fix the issue with the new auto save attempting to save both
	* users at the same time.
	*/
	
	public static function checkDuplicateSessions( $username ) {
	
		session_write_close();
		$all_sessions = array();
		$sessions = glob( SESSIONS_PATH . "/*" );
		session_id( SESSION_ID );
		
		foreach( $sessions as $session ) {
			
			if( strpos( $session, "sess_") == false ) {
				
				continue;
			}
			
			$session = str_replace( "sess_", "", $session );
			$session = str_replace( SESSIONS_PATH . "/", "", $session );
			//This skips temp files that aren't sessions
			if( strpos( $session, "." ) == false ) {
				
				session_id( $session );
				session_start();
				$_SESSION["id"] = $session;
				array_push( $all_sessions, $_SESSION );
				
				if( isset( $_SESSION["user"] ) && $_SESSION["user"] === $username && isset( $_SESSION["login_session"] ) && $_SESSION["login_session"] === true && SESSION_ID !== session_id() ) {
					
					session_destroy();
				} else {
					
					session_abort();
				}
			}
		}
		session_id( SESSION_ID );
		session_start();
	}
	
	//////////////////////////////////////////////////////////////////
	// Create Account
	//////////////////////////////////////////////////////////////////
	
	public function Create() {
		
		$this->EncryptPassword();
		$pass = $this->checkDuplicate();
		if( $pass ) {
			
			$this->users[] = array( "username" => $this->username, "password" => $this->password, "project" => "" );
			saveJSON( 'users.php', $this->users );
			echo formatJSEND( "success", array( "username" => $this->username ) );
		} else {
			
			echo formatJSEND( "error", "The Username is Already Taken" );
		}
	}
	
	//////////////////////////////////////////////////////////////////
	// Delete Account
	//////////////////////////////////////////////////////////////////
	
	public function Delete() {
		
		// Remove User
		$revised_array = array();
		foreach( $this->users as $user => $data ) {
			
			if( $data['username'] != $this->username ) {
				
				$revised_array[] = array( "username" => $data['username'], "password" => $data['password'], "project" => $data['project'] );
			}
		}
		// Save array back to JSON
		saveJSON( 'users.php', $revised_array );
		
		// Remove any active files
		foreach( $this->actives as $active => $data ) {
			
			if( $this->username == $data['username'] ) {
				
				unset( $this->actives[$active] );
			}
		}
		saveJSON( 'active.php', $this->actives );
		
		// Remove access control list (if exists)
		if( file_exists( BASE_PATH . "/data/" . $this->username . '_acl.php' ) ) {
			
			unlink(BASE_PATH . "/data/" . $this->username . '_acl.php');
		}
		
		// Response
		echo formatJSEND( "success", null );
	}
	
	//////////////////////////////////////////////////////////////////
	// Change Password
	//////////////////////////////////////////////////////////////////
	
	public function Password() {
		
		$this->EncryptPassword();
		$revised_array = array();
		foreach( $this->users as $user => $data ) {
			
			if( $data['username'] == $this->username ) {
				
				$revised_array[] = array( "username" => $data['username'], "password" => $this->password, "project" => $data['project'] );
			} else {
				
				$revised_array[] = array( "username" => $data['username'], "password" => $data['password'], "project" => $data['project'] );
			}
		}
		// Save array back to JSON
		saveJSON( 'users.php', $revised_array );
		// Response
		echo formatJSEND( "success", null );
	}
	
	//////////////////////////////////////////////////////////////////
	// Set Project Access
	//////////////////////////////////////////////////////////////////
	
	public function Project_Access() {
		
		// Access set to all projects
		if( $this->projects == 0 ) {
			
			// Access set to restricted list
			if( file_exists( BASE_PATH . "/data/" . $this->username . '_acl.php' ) ) {
				
				unlink( BASE_PATH . "/data/" . $this->username . '_acl.php' );
			}
		} else {
			
			// Save array back to JSON
			saveJSON( $this->username . '_acl.php', $this->projects );
		}
		// Response
		echo formatJSEND( "success", null );
	}
	
	//////////////////////////////////////////////////////////////////
	// Set Current Project
	//////////////////////////////////////////////////////////////////
	
	public function Project() {
		
		$revised_array = array();
		foreach( $this->users as $user => $data ) {
			
			if( $this->username == $data['username'] ) {
				
				$revised_array[] = array( "username" => $data['username'], "password" => $data['password'], "project" => $this->project );
			} else {
				
				$revised_array[] = array( "username" => $data['username'], "password" => $data['password'], "project" => $data['project'] );
			}
		}
		// Save array back to JSON
		saveJSON( 'users.php', $revised_array );
		// Response
		echo formatJSEND( "success", null );
	}
	
	//////////////////////////////////////////////////////////////////
	// Check Duplicate
	//////////////////////////////////////////////////////////////////
	
	public function CheckDuplicate() {
		
		$pass = true;
		foreach( $this->users as $user => $data ) {
			
			if( $data['username'] == $this->username ) {
				
				$pass = false;
			}
		}
		return $pass;
	}
	
	//////////////////////////////////////////////////////////////////
	// Verify Account Exists
	//////////////////////////////////////////////////////////////////
	
	public function Verify() {
			
		$pass = 'false';
		foreach( $this->users as $user => $data ) {
			
			if( $this->username == $data['username'] ) {
				
				$pass = 'true';
			}
		}
		echo( $pass );
	}
	
	//////////////////////////////////////////////////////////////////
	// Encrypt Password
	//////////////////////////////////////////////////////////////////
	
	private function EncryptPassword() {
		
		$this->password = sha1( md5( $this->password ) );
	}
	
	//////////////////////////////////////////////////////////////////
	// Clean username
	//////////////////////////////////////////////////////////////////
	
	public static function CleanUsername( $username ) {
		
		return preg_replace( '#[^A-Za-z0-9' . preg_quote( '-_@. ').']#', '', $username );
	}
}