<?php
function dbConnect($db) {
        $con = mysql_connect("localhost", "root", "iagtku!!");
        if (!$con) die('Could not connect: ' . mysql_error());
	mysql_select_db($db);
        return $con;
}

function localAuth($uid, $pwd) {
        $role = 'guest';
	if ($uid && $pwd) {
		$rs = mysql_query("select * from webusers where userid='$uid'");
		//$rs = mysql_query("select * from $tbl where userid='$uid' and passwd=password('$pwd')");
        	if (mysql_num_rows($rs)) {
                	$o = mysql_fetch_object($rs);
                	$role = $o->role;
        	}
	}
        return $role;
}

function ldapAuth($uid, $pwd) {
        if ($uid && $pwd) {
                $ds = ldap_connect("ldap.iiita.ac.in");
                ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3);
                $a = ldap_search($ds,"dc=iiita,dc=ac,dc=in", "uid=$uid");
                $b = ldap_get_entries($ds, $a);
                $dn = $b[0]["dn"];
                //******************************************************
                if (ldap_bind($ds, $dn, $pwd))
                        return TRUE;
                else
                        return FALSE;
                ldap_close($ds);
        } else
                return FALSE;
}

function accessLog($user, $referer, $url, $remoteip) {        
	$tbl = 'weblogs';
        
	if (!$user) $user = 'guest';
        if (!$referer) $referer = 'direct';
        if ($url == '/') $url = 'index.php';
        
        mysql_query("insert into $tbl(userid,referer,weburl,remoteip,dateaccess)
        values('$user', '$referer', '$url','$remoteip',now())");
}

function checkEmail($email) {
        if (eregi("^[a-zA-Z0-9_]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-\.]+$]", $email)) {
                return FALSE;
        }
        list($Username, $Domain) = split("@",$email);
        if (getmxrr($Domain, $MXHost)) {
                return TRUE;
        } else {
                if (fsockopen($Domain, 25, $errno, $errstr, 30)) {
                        return TRUE;
                } else {
                        return FALSE;
                }
        }
}

function checkAbuser($message, $name, $email, $systemip) {
        $tbl = 'abusers';
	if (mysql_num_rows(mysql_query("select * from $tbl where systemip='$ip' or email='$email' or name='$name'"))) {
                return TRUE;
        } else {
                $abuses = array('nude','teen','www','url','sex','suck','fuck','xxx','pussy','penis','hotty','sexual','porn','movie');
                foreach ($abuses as $abuse) {
                        if (stristr($message, $abuse)) {
                                mysql_query("insert into $tbl(name,email,systemip,datecreation) values('$name','$email','$systemip',now())");
                                return TRUE;
                        }
                }
                return FALSE;
        }
}

function ajax() {
?>
	<script language="javascript">
	function GetXmlHttpObject() {
        	var xmlHttp = null;
        	try {
                	// Firefox, Opera 8.0+, Safari
                	xmlHttp = new XMLHttpRequest();
        	} catch (e) {
                	// Internet Explorer
                	try {
                        	xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
                	} catch (e) {
                        	xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
                	}
        	}
        	return xmlHttp;
	}

	function showPage(task, query) {
        	if (task.length < 1 || query.length < 3) {
                	document.getElementById("ajax").innerHTML="";
                	document.getElementById("ajax").style.visibility = 'hidden';
                	return;
        	} else
                	document.getElementById("ajax").style.visibility = 'visible';
        	xmlHttp=GetXmlHttpObject()
        	if (xmlHttp == null) {
                	alert ("Your browser does not support AJAX!");
                	return;
        	}
        	var url = "ajaxpage.php?task="+task+"&query="+query;
        	//alert(url);
        	xmlHttp.onreadystatechange = stateChanged;
        	xmlHttp.open("GET", url, true);
        	xmlHttp.send(null);
	}

	function stateChanged() {
        	if (xmlHttp.readyState==4) {
                	document.getElementById("ajax").innerHTML=xmlHttp.responseText;
        	}
	}
	</script>
<?php
}

function sendmail($email, $subject, $body) {
	require("classes/class.phpmailer.php");
	$mail = new PHPMailer();
	$mail->IsSMTP(); // telling the class to use SMTP
	$mail->Host = "mail.iiita.ac.in"; // SMTP server
	$mail->FromName = "Webmailer";
	$mail->From = "indem@iiita.ac.in";
	$mail->AddAddress($email,$email);
	$mail->AddAddress("indem@iiita.ac.in","indem@iiita.ac.in");
	$mail->Username = "indem";
	$mail->Password = "@medni2020";

	$mail->Subject = $subject;
	$mail->Body = $body;
	$mail->WordWrap = 75;

	if (!$mail->Send()) {
   		return $mail->ErrorInfo;
	} else {
   		return TRUE;
	}
}

function upload($gallery=0) {
	$maxsize = 90998860800;
	$uploadfile = basename($_FILES['userfile']['name']);
	$tempfile = $_FILES['userfile']['tmp_name'];
	$filesize = $_FILES["userfile"]["size"];
	$uploadfile = str_replace(" ","-",$uploadfile);
	$uploadfile = str_replace("'","",$uploadfile);
	$uploadfile = str_replace('"',"",$uploadfile);
	$uploadfile = str_replace('(',"",$uploadfile);
	$uploadfile = strtolower(str_replace(')',"",$uploadfile));
	if ($uploadfile && $filesize < $maxsize) {
        	$filename = explode(".", $uploadfile);
        	$ext = $filename[count($filename)-1];
		$aPath = 'images';
		$rPath = 'images';
        	if (move_uploaded_file($tempfile, "$aPath/$uploadfile")) {
                	shell_exec("chmod -R 755 $aPath");
                	//echo "<div>Thanks! $uploadfile file has successfully been uploaded.</div>";
                	return "$rPath/$uploadfile";
        	} else {
                	echo "<div>Oops! $aPath/$uploadfile ($tempfile) file could not be uploaded due to system error.</div>";
                	return "Error: system problem";
        	}
	} else {
		//echo "<div>Oops! either file name is missing or file size exceeds the max. limit of 10 MB.</div>";
		return "Error: filesize > 10 MB";
	}
}


function text2image($str) {
	Header ("Content-type: image/png");
	putenv('GDFONTPATH=' . realpath('.'));
	$font = 'arial.ttf';
	$fontSize = 80;//in point;
	$onecharwidth  = imagefontwidth($font)*($fontSize/8);
	$totalwidth  = $onecharwidth * strlen($str);
	$height = (imagefontheight($font)*($fontSize/8))*2;
	$img_handle = imagecreatetruecolor($totalwidth, $height);
	$white = imagecolorallocate($img_handle, 255, 255, 255);
	imagefill($img_handle, 0, 0, $white);
	$black = imagecolorallocate ($img_handle, 0, 0, 0);
	$gray = imagecolorallocate ($img_handle, 100, 100, 100);
	imagettftext($img_handle, 20, 0, 10, 20, $black, $font, $title1);
	$posarr=imagettfbbox(20, 0,$font, $title1);
	imagettftext($img_handle, 20, 0, $posarr[2]+$onecharwidth, 20, $gray, $font, $title2);
	imagepng ($img_handle);
	imagedestroy ($img_handle);
}


function ReplaceBadWords($str, $bad_words, $replace_str){
	if (!is_array($bad_words)){ 
		$bad_words = explode(',', $bad_words); 
	}
	for ($x=0; $x < count($bad_words); $x++){
		$fix = isset($bad_words[$x]) ? $bad_words[$x] : '';
		$_replace_str = $replace_str;
		if (strlen($replace_str)==1){
			$_replace_str = str_pad($_replace_str, strlen($fix), $replace_str);
		}
		$str = preg_replace('/'.$fix.'/i', $_replace_str, $str);
	}

	return $str;
}

?>