Functions to login to University website and select cources

SelectCourse.php

<?php
function LoginAndGetCookie($server='82.99.229.141', $user, $pass)
{
	$status = 'Error';
	$data = 'مشکلی در انجام عملیات بوجود آمد. شاید به دلیل شلوغی سایت، این مشکل بوجود آمده. لطفاً بعداً دوباره امتحان کنید';
	
	$ch = curl_init();
	
	curl_setopt($ch, CURLOPT_URL, 'http://' . $server . '/');
	curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0');
	curl_setopt($ch, CURLOPT_HEADER, 1);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_NOBODY, 0);
	
	$page = curl_exec($ch);
	curl_close($ch);

	preg_match('/ASP.NET_SessionId=[^;]*;/i', $page, $match);
	$aspxcookie = str_replace(array('ASP.NET_SessionId=', ';'), array('', ''), $match[0]);

	
	preg_match('/__VIEWSTATE" value="[^"]*"/i', $page, $match);
	$viewstate = str_replace(array('__VIEWSTATE" value="', '"'), array('', ''), $match[0]);
	
	preg_match('/__EVENTVALIDATION" value="[^"]*"/i', $page, $match);
	$eventvalidation = str_replace(array('__EVENTVALIDATION" value="', '"'), array('', ''), $match[0]);


	
	$ch = curl_init();
	
	curl_setopt($ch, CURLOPT_URL, 'http://' . $server . '/login.aspx');
	curl_setopt($ch, CURLOPT_REFERER, 'http://' . $server . '/');
	curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0');
	curl_setopt($ch, CURLOPT_HEADER, 1);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_NOBODY, 0);
	curl_setopt($ch,CURLOPT_HTTPHEADER,array('Cookie: ASP.NET_SessionId='.$aspxcookie));
	curl_setopt($ch, CURLOPT_POST, 1);
	
	curl_setopt($ch, CURLOPT_POSTFIELDS, '__EVENTTARGET=&__EVENTARGUMENT=&__EVENTVALIDATION=' . urlencode($eventvalidation) . '&__VIEWSTATE=' . urlencode($viewstate) . '&txtUserName=' . urlencode($user) . '&txtPassword=' . urlencode($pass) . '&grop1=RadioButton1&LoginButton=%D9%88%D8%B1%D9%88%D8%AF+%D8%A8%D9%87+%D8%B3%DB%8C%D8%B3%D8%AA%D9%85');
	$page = curl_exec($ch);
	curl_close($ch);


	
	$page = str_replace("HTTP/1.1 100 Continue\r\n\r\n", '', $page);
	$page = ltrim(substr($page, strpos($page, "\r\n\r\n")), "\r\n");
	if (strpos($page, '<script>  alert ("') === 0)
	{
		$data = substr($page, 18, strpos($page, '"', 18) - 18);
	}
	else
	{
		$status = 'OK';
		$data = $aspxcookie;
	}

	return array("status" => $status, "data" => $data);
}

function SelectCourse($server='82.99.229.141', $cookie, $code)
{
	$status = 'Error';
	$data = 'مشکلی در انجام عملیات بوجود آمد. لطفاً دوباره لاگین کنید';

	$ch = curl_init();
	
	curl_setopt($ch, CURLOPT_URL, 'http://' . $server . '/SelectCourse.aspx');
	curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0');
	curl_setopt($ch,CURLOPT_HTTPHEADER,array('Cookie: ASP.NET_SessionId='.$cookie));
	curl_setopt($ch, CURLOPT_REFERER, 'http://' . $server . '/SelectCourse.aspx');
	curl_setopt($ch, CURLOPT_HEADER, 1);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_NOBODY, 0);
	
	$page = curl_exec($ch);
	curl_close($ch);


	preg_match('/__VIEWSTATE" value="[^"]*"/i', $page, $match);
	$viewstate = str_replace(array('__VIEWSTATE" value="', '"'), array('', ''), $match[0]);
	
	preg_match('/__EVENTVALIDATION" value="[^"]*"/i', $page, $match);
	$eventvalidation = str_replace(array('__EVENTVALIDATION" value="', '"'), array('', ''), $match[0]);


	$ch = curl_init();
	
	curl_setopt($ch, CURLOPT_URL, 'http://' . $server . '/SelectCourse.aspx');
	curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0');
	curl_setopt($ch, CURLOPT_HEADER, 1);
	curl_setopt($ch, CURLOPT_REFERER, 'http://' . $server . '/SelectCourse.aspx');
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_NOBODY, 0);
	curl_setopt($ch,CURLOPT_HTTPHEADER,array('Cookie: ASP.NET_SessionId='.$cookie));
	curl_setopt($ch, CURLOPT_POST, 1);


	curl_setopt($ch, CURLOPT_POSTFIELDS, '__EVENTTARGET=ctl00%24ContentPlaceHolder1%24lnkBtnSelectCourse&__EVENTARGUMENT=&__VIEWSTATE=' . urlencode($viewstate) . '&__VIEWSTATEENCRYPTED=&__PREVIOUSPAGE=tCJC0IzlpZ5yX2jv_ZL8qTztaKbNGgHV8SwF7FEm5b01&__EVENTVALIDATION=' . urlencode($eventvalidation) . '&ctl00%24ContentPlaceHolder1%24txtCourseId='.$code);
	$page = curl_exec($ch);
	curl_close($ch);


	$pos = 0;
	
	if (($pos = strpos($page, 'alert(')) !== false)
	{
		$pos += 7;
		$data = substr($page, $pos, strpos($page, "'", $pos) - $pos);
	}
	elseif (strpos($page, '>'.$code.'<') !== false)
	{
		$status = 'OK';
		$data = $code;
	}
	else
	{
		$status = 'Error';
		$data = 'مشخصه ' . $code . ' ثبت نشد. لطفاً با سرور دیگری امتحان کنید';
	}

	return array("status" => $status, "data" => $data);
}

function multiSelectCourse($server='82.99.229.141', $cookie, $codes) {

	$ch = curl_init();
	
	curl_setopt($ch, CURLOPT_URL, 'http://' . $server . '/SelectCourse.aspx');
	curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0');
	curl_setopt($ch, CURLOPT_HTTPHEADER, array('Cookie: ASP.NET_SessionId='.$cookie));
	curl_setopt($ch, CURLOPT_REFERER, 'http://' . $server . '/SelectCourse.aspx');
	curl_setopt($ch, CURLOPT_HEADER, 1);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_NOBODY, 0);
	
	$page = curl_exec($ch);
	curl_close($ch);


	preg_match('/__VIEWSTATE" value="[^"]*"/i', $page, $match);
	$viewstate = str_replace(array('__VIEWSTATE" value="', '"'), array('', ''), $match[0]);
	
	preg_match('/__EVENTVALIDATION" value="[^"]*"/i', $page, $match);
	$eventvalidation = str_replace(array('__EVENTVALIDATION" value="', '"'), array('', ''), $match[0]);


  $curly = array();
  $result = array();

  $mh = curl_multi_init();

  $codes = array_values(array_diff($codes, array('')));
  foreach ($codes as $code) {

	$id = $code;

	$curly[$id] = curl_init();
	
	curl_setopt($curly[$id], CURLOPT_URL, 'http://' . $server . '/SelectCourse.aspx');
	curl_setopt($curly[$id], CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0');
	curl_setopt($curly[$id], CURLOPT_HEADER, 1);
	curl_setopt($curly[$id], CURLOPT_REFERER, 'http://' . $server . '/SelectCourse.aspx');
	curl_setopt($curly[$id], CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($curly[$id], CURLOPT_NOBODY, 0);
	curl_setopt($curly[$id], CURLOPT_HTTPHEADER, array('Cookie: ASP.NET_SessionId='.$cookie));
	curl_setopt($curly[$id], CURLOPT_POST, 1);
	curl_setopt($curly[$id], CURLOPT_POSTFIELDS, '__EVENTTARGET=ctl00%24ContentPlaceHolder1%24lnkBtnSelectCourse&__EVENTARGUMENT=&__VIEWSTATE=' . urlencode($viewstate) . '&__VIEWSTATEENCRYPTED=&__PREVIOUSPAGE=tCJC0IzlpZ5yX2jv_ZL8qTztaKbNGgHV8SwF7FEm5b01&__EVENTVALIDATION=' . urlencode($eventvalidation) . '&ctl00%24ContentPlaceHolder1%24txtCourseId='.$code);

    curl_multi_add_handle($mh, $curly[$id]);
  }

  // execute the handles
  $running = null;
  do {
    curl_multi_exec($mh, $running);
  } while($running > 0);

  // get content and remove handles
  foreach($curly as $code => $c) {

	$status = 'Error';
	$data = 'مشکلی در انجام عملیات بوجود آمد. لطفاً دوباره لاگین کنید';

    $page = curl_multi_getcontent($c);

	$pos = 0;
	
	if (($pos = strpos($page, 'alert(')) !== false)
	{
		$pos += 7;
		$data = substr($page, $pos, strpos($page, "'", $pos) - $pos);
	}
	elseif (strpos($page, '>'.$code.'<') !== false)
	{
		$status = 'OK';
		$data = $code;
	}
	else
	{
		$status = 'Error';
		$data = 'مشخصه ' . $code . ' ثبت نشد. لطفاً با سرور دیگری امتحان کنید';
	}

	if (@$code)
		$data = (strpos($data, " $code " /* this is weird! really weird! */) === false ? ($code . ': ') : '') . $data;

	 array_push($result, array("status" => $status, "data" => $data));
    curl_multi_remove_handle($mh, $c);
  }

  // all done
  curl_multi_close($mh);

  return $result;
}
?>