<?php
    //Common files and functions
    session_start();
    require_once('dbconnect.php');

    //Check for valid session information on pages
    function validate_session(){
        $ip       = $_SERVER['REMOTE_ADDR'];
        $username = $_SESSION['username'];
        $userid   = $_SESSION['uid'];

        $sql = mysql_query("SELECT * FROM `member` where (id='$userid' AND ip='$ip' AND username='$username')");

        if(mysql_num_rows($sql) == 1){
            return true;
        } else {
            header("Location: ../../../index.php?notloggedin=1");
            exit();
        }
    }

    //Set session defaults if not set yet
    function session_defaults(){
        $_SESSION['uid']      = 0;
        $_SESSION['username'] = '';
        $_SESSION['ip']       = '';
    }

    //Hash password parameter
    function hashPassword($password){
        $password = stripslashes(mysql_real_escape_string($password));
        $newPassword = md5($password);
        return $newPassword;
    }

    //Set sessions with given parameters
    function set_session($id, $username){
        $_SESSION['uid']      = $id;
        $_SESSION['username'] = $username;
    }

    //Generate random password
    function random_pass(){
        $chars = "abcdefghijkmnopqrstuvwxyz023456789";
        srand((double)microtime()*1000000);
        $i = 0;
        $pass = '' ;
        while ($i <= 7) {
            $num = rand() % 33;
            $tmp = substr($chars, $num, 1);
            $pass = $pass . $tmp;
            $i++;
        }
        return $pass;
    }

    //Destroy session
    function logout() {
        session_destroy();
    }
?>