From 9cabedcfc2c95beda6a7455042bfab5b93ba5c0a Mon Sep 17 00:00:00 2001
From: Dirk Riestere
Date: Thu, 9 Mar 2017 01:41:31 +0100
Subject: Fehler beim xml lesen behoben

---
 .../coursebackend/coursebackend_hisinone.inc.php   | 402 +++++++++------------
 1 file changed, 166 insertions(+), 236 deletions(-)

(limited to 'modules-available/locationinfo/inc/coursebackend/coursebackend_hisinone.inc.php')

diff --git a/modules-available/locationinfo/inc/coursebackend/coursebackend_hisinone.inc.php b/modules-available/locationinfo/inc/coursebackend/coursebackend_hisinone.inc.php
index 2c5a276b..0d057bee 100644
--- a/modules-available/locationinfo/inc/coursebackend/coursebackend_hisinone.inc.php
+++ b/modules-available/locationinfo/inc/coursebackend/coursebackend_hisinone.inc.php
@@ -9,7 +9,7 @@ class CourseBackend_HisInOne extends CourseBackend
 	//Sets the location and the login information of this client
 	public function setCredentials($data, $location, $serverID)
 	{
-		try {
+		if (array_key_exists('password', $data) && array_key_exists('username', $data) && array_key_exists('role', $data) && isset($data['open'])) {
 			$this->error = false;
 			$this->password = $data['password'];
 			$this->username = $data['username'] . "\t" . $data['role'];
@@ -25,70 +25,28 @@ class CourseBackend_HisInOne extends CourseBackend
 				$this->location = $location . "/qisserver/services2/CourseService";
 			}
 			$this->serverID = $serverID;
-		} catch (Exception $e) {
+		} else {
 			$this->error = true;
-			$this->errormsg = $e->getMessage();
+			$this->errormsg = "wrong credentials";
 			return false;
 		}
+
+
 		return true;
 	}
 
 	public function checkConnection()
 	{
-		if ($this->location = "") {
+		if ($this->location =="") {
 			$this->error = true;
 			$this->errormsg = "Credentials are not set";
 		}
-
 		$this->findUnit(42);
 		return !$this->error;
 	}
 
 	//Cache the timetables for 30 minutes ttables older than 60 are not refreshed
-	public function getCacheTime()
-	{
-		return 30 * 60;
-	}
-
-	//ttables older than 60 minutes are not refreshed
-	public function getRefreshTime()
-	{
-		return 60 * 60;
-	}
-
-	public function getDisplayName()
-	{
-		return "HisInOne";
-	}
-
-	public function getCredentials()
-	{
-		$credentials = ["username" => "string", "role" => "string", "password" => "string", "open" => "bool"];
-		return $credentials;
-	}
 
-	//Contstructs the Soap Header $doc is a DOMDocument this returns a DOMElement
-	private function getHeader($doc)
-	{
-		$header = $doc->createElement('SOAP-ENV:Header');
-		$security = $doc->createElementNS('http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd', 'ns2:Security');
-		$mustunderstand = $doc->createAttribute('SOAP-ENV:mustUnderstand');
-		$mustunderstand->value = 1;
-		$security->appendChild($mustunderstand);
-		$header->appendChild($security);
-		$token = $doc->createElement('ns2:UsernameToken');
-		$security->appendChild($token);
-		$user = $doc->createElement('ns2:Username', $this->username);
-		$token->appendChild($user);
-		$pass = $doc->createElement('ns2:Password', $this->password);
-		$type = $doc->createAttribute('Type');
-		$type->value = 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText';
-		$pass->appendChild($type);
-		$token->appendChild($pass);
-		return $header;
-	}
-
-	//returns the IDs in an array for a given roomID or false if there was an error
 	public function findUnit($roomID)
 	{
 		$termYear = date('Y');
@@ -126,92 +84,59 @@ class CourseBackend_HisInOne extends CourseBackend
 
 		$soap_request = $doc->saveXML();
 		$response1 = $this->__doRequest($soap_request, "findUnit");
+		$id = [];
 		if ($this->error == true) {
 			return false;
 		}
 		$response2 = $this->toArray($response1);
+		if ($response2 === false) {
+			return false;
+		}
 		if (isset($response2['soapenvBody']['soapenvFault'])) {
 			$this->error = true;
 			$this->errormsg = $response2['soapenvBody']['soapenvFault']['faultcode'] . " " . $response2['soapenvBody']['soapenvFault']['faultstring'];
 			return false;
-		} else {
-			$this->error = false;
 		}
-		try {
-			if ($this->open) {
-				$units = $response2['soapenvBody']['hisfindUnitResponse']['hisunits']['hisunit'];
-				$id = [];
-				foreach ($units as $unit) {
-					$id[] = $unit['hisid'];
-				}
-			} else {
-				$id = $response2['soapenvBody']['hisfindUnitResponse']['hisunitIds']['hisid'];
+		elseif ($this->open && isset($response2['soapenvBody']['hisfindUnitResponse']['hisunits']['hisunit'])) {
+			$units = $response2['soapenvBody']['hisfindUnitResponse']['hisunits']['hisunit'];
+			foreach ($units as $unit) {
+				$id[] = $unit['hisid'];
 			}
-		} catch (Exception $exception) {
-			if ($this->error) {
-				$id = false;
-			} else {
-				$this->error = true;
-				$this->errormsg = "url send a xml in a wrong format";
-				$id = false;
+		} elseif (!$this->open && isset($response2['soapenvBody']['hisfindUnitResponse']['hisunitIds'])) {
+			if(isset($response2['soapenvBody']['hisfindUnitResponse']['hisunitIds']['hisid'])){
+				$id = $response2['soapenvBody']['hisfindUnitResponse']['hisunitIds']['hisid'];
 			}
+		}  else {
+			$this->error = true;
+			$this->errormsg = "url send a xml in a wrong format";
+			$id = false;
 		}
 		return $id;
 	}
 
-	//This function sends a Soaprequest with the eventID and returns an array which contains much
-	// informations, like start and enddates for events and their name. It returns false if there was an error
-	public function readUnit($unit)
-	{
-		$doc = new DOMDocument('1.0', 'utf-8');
-		$doc->formatOutput = true;
-		$envelope = $doc->createElementNS('http://schemas.xmlsoap.org/soap/envelope/', 'SOAP-ENV:Envelope');
-		$doc->appendChild($envelope);
-		if ($this->open) {
-			$envelope->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:ns1', 'http://www.his.de/ws/OpenCourseService');
-		} else {
-			$envelope->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:ns1', 'http://www.his.de/ws/CourseService');
-			$header = $this->getHeader($doc);
-			$envelope->appendChild($header);
-		}
-		//body of the request
-		$body = $doc->createElement('SOAP-ENV:Body');
-		$envelope->appendChild($body);
-		$readUnit = $doc->createElement('ns1:readUnit');
-		$body->appendChild($readUnit);
-		$unitId = $doc->createElement('ns1:unitId', $unit);
-		$readUnit->appendChild($unitId);
-
-		$soap_request = $doc->saveXML();
-		$response1 = $this->__doRequest($soap_request, "readUnit");
-		if ($this->error == true) {
-			return false;
-		}
-		$response2 = $this->toArray($response1);
-		if ($response2 != false) {
-			if (isset($response2['soapenvBody']['soapenvFault'])) {
-				$this->error = true;
-				$this->errormsg = $response2['soapenvBody']['soapenvFault']['faultcode'] . " " . $response2['soapenvBody']['soapenvFault']['faultstring'];
-				return false;
-			} else {
-				try {
-					$this->error = false;
-					$response3 = $response2['soapenvBody']['hisreadUnitResponse'];
-				} catch (Exception $e) {
-					$this->error = true;
-					$this->errormsg = "url send a xml in a wrong format";
-					return false;
-				}
-			}
-		} else {
-			return false;
-		}
+	//ttables older than 60 minutes are not refreshed
 
-		return $response3;
+	private function getHeader($doc)
+	{
+		$header = $doc->createElement('SOAP-ENV:Header');
+		$security = $doc->createElementNS('http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd', 'ns2:Security');
+		$mustunderstand = $doc->createAttribute('SOAP-ENV:mustUnderstand');
+		$mustunderstand->value = 1;
+		$security->appendChild($mustunderstand);
+		$header->appendChild($security);
+		$token = $doc->createElement('ns2:UsernameToken');
+		$security->appendChild($token);
+		$user = $doc->createElement('ns2:Username', $this->username);
+		$token->appendChild($user);
+		$pass = $doc->createElement('ns2:Password', $this->password);
+		$type = $doc->createAttribute('Type');
+		$type->value = 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText';
+		$pass->appendChild($type);
+		$token->appendChild($pass);
+		return $header;
 	}
 
-	//Makes a SOAP-Request as a normal POST
-	function __doRequest($request, $action)
+	private function __doRequest($request, $action)
 	{
 		$header = array(
 			"Content-type: text/xml;charset=\"utf-8\"",
@@ -247,32 +172,99 @@ class CourseBackend_HisInOne extends CourseBackend
 		return $output;
 	}
 
-	/**
-	 * Request for a timetable
-	 *
-	 * @param $param int the roomid
-	 * @return string the timetable as json or false if there was an error
-	 */
-	public function getJson($param)
+	private function toArray($response)
 	{
+		try {
+			$cleanresponse = preg_replace("/(<\/?)(\w+):([^>]*>)/", "$1$2$3", $response);
+			$xml = new SimpleXMLElement($cleanresponse);
+			$array = json_decode(json_encode((array)$xml), true);
+		} catch (Exception $e) {
+			$this->error = true;
+			$this->errormsg = "url did not send a xml";
+			$array = false;
+		}
+		return $array;
+	}
+
+	//Contstructs the Soap Header $doc is a DOMDocument this returns a DOMElement
+
+	public function getCacheTime()
+	{
+		return 30 * 60;
+	}
+
+	//returns the IDs in an array for a given roomID or false if there was an error
+
+	public function getRefreshTime()
+	{
+		return 60 * 60;
+	}
+
+	//This function sends a Soaprequest with the eventID and returns an array which contains much
+	// informations, like start and enddates for events and their name. It returns false if there was an error
+
+	public function getDisplayName()
+	{
+		return "HisInOne";
+	}
+
+
+	//Makes a SOAP-Request as a normal POST
+
+	public function getCredentials()
+	{
+		$credentials = ["username" => "string", "role" => "string", "password" => "string", "open" => "bool"];
+		return $credentials;
+	}
+
+
+	//this function transforms a xml string into an array or return false if there was an error
+
+	public function fetchSchedulesInternal($param)
+	{
+		if(empty($param)){
+			$this->error = true;
+			$this->errormsg = 'No roomid was given';
+		}
+		$tTables = [];
 		//get all eventIDs in a given room
-		$eventIDs = $this->findUnit($param);
-		if ($this->error == true) {
-			return false;
+		$eventIDs = [];
+		foreach ($param as $ID) {
+			$unitID = $this->findUnit($ID);
+			if ($unitID === false) {
+				return false;
+			}
+			$eventIDs = array_merge($eventIDs, $unitID);
+			$eventIDs = array_unique($eventIDs);
+			if ($this->error == true) {
+				return false;
+			}
+		}
+		if(empty($eventIDs)){
+			foreach ($param as $room){
+				$tTables[$room] = [];
+			}
+			return $tTables;
 		}
-		//get all information on each event
 		$events = [];
+		//get all information on each event
 		foreach ($eventIDs as $each_event) {
-			$events[] = $this->readUnit((int)$each_event);
-			if ($this->error == true) {
+			$event = $this->readUnit(intval($each_event));
+			if ($event === false) {
 				return false;
 			}
+			$events[] = $event;
 		}
-		$timetable = array();
 		$currentWeek = $this->getCurrentWeekDates();
-		//Here I go over the soapresponse
-		try {
+		foreach ($param as $room) {
+			$timetable = array();
+			//Here I go over the soapresponse
 			foreach ($events as $event) {
+				if(empty($event['hisunit']['hisplanelements']['hisplanelement'][0]['hisdefaulttext'])){
+					$this->error = true;
+					$this->errormsg = "url returns a wrong xml";
+					return false;
+				}
 				$title = $event['hisunit']['hisplanelements']['hisplanelement'][0]['hisdefaulttext'];
 				foreach ($event as $subject) {
 					$units = $subject['hisplanelements']['hisplanelement'];
@@ -285,8 +277,7 @@ class CourseBackend_HisInOne extends CourseBackend
 							foreach ($dates as $date) {
 								$roomID = $date['hisroomId'];
 								$datum = $date['hisexecutiondate'];
-								if (intval($roomID) == $param && in_array($datum, $currentWeek)) {
-
+								if (intval($roomID) == $room && in_array($datum, $currentWeek)) {
 									$startTime = $date['hisstarttime'];
 									$endTime = $date['hisendtime'];
 									$json = array(
@@ -303,7 +294,7 @@ class CourseBackend_HisInOne extends CourseBackend
 								foreach ($dates as $date) {
 									$roomID = $date['hisroomId'];
 									$datum = $date['hisexecutiondate'];
-									if (intval($roomID) == $param && in_array($datum, $currentWeek)) {
+									if (intval($roomID) == $room && in_array($datum, $currentWeek)) {
 
 										$startTime = $date['hisstarttime'];
 										$endTime = $date['hisendtime'];
@@ -317,122 +308,61 @@ class CourseBackend_HisInOne extends CourseBackend
 								}
 							}
 						}
-
-
 					}
 				}
 			}
-		} catch (Exception $e) {
-			$this->error = true;
-			$this->errormsg = "url returns a wrong xml";
-			return false;
+			$tTables[$room] = $timetable;
 		}
-		$timetable = json_encode($timetable);
-		return $timetable;
+		return $tTables;
 	}
 
-	//this function transforms a xml string into an array or return false if there was an error
-	private function toArray($response)
+	//Request for a timetable with roomids as array it will be boolean false if there was an error
+
+	public function readUnit($unit)
 	{
-		try {
-			$cleanresponse = preg_replace("/(<\/?)(\w+):([^>]*>)/", "$1$2$3", $response);
-			$xml = new SimpleXMLElement($cleanresponse);
-			$array = json_decode(json_encode((array)$xml), true);
-		} catch (Exception $e) {
-			$this->error = true;
-			$this->errormsg = "url did not send a xml";
-			$array = false;
+		$doc = new DOMDocument('1.0', 'utf-8');
+		$doc->formatOutput = true;
+		$envelope = $doc->createElementNS('http://schemas.xmlsoap.org/soap/envelope/', 'SOAP-ENV:Envelope');
+		$doc->appendChild($envelope);
+		if ($this->open) {
+			$envelope->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:ns1', 'http://www.his.de/ws/OpenCourseService');
+		} else {
+			$envelope->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:ns1', 'http://www.his.de/ws/CourseService');
+			$header = $this->getHeader($doc);
+			$envelope->appendChild($header);
 		}
-		return $array;
-	}
+		//body of the request
+		$body = $doc->createElement('SOAP-ENV:Body');
+		$envelope->appendChild($body);
+		$readUnit = $doc->createElement('ns1:readUnit');
+		$body->appendChild($readUnit);
+		$unitId = $doc->createElement('ns1:unitId', $unit);
+		$readUnit->appendChild($unitId);
 
-	//Request for a timetable with roomids as array it will be boolean false if there was an error
-	public function fetchSchedulesInternal($param)
-	{
-		$tTables = [];
-		//get all eventIDs in a given room
-		$eventIDs = [];
-		foreach ($param as $ID) {
-			$unitID = $this->findUnit($ID);
-			if ($unitID === false) {
-				return false;
-			}
-			$eventIDs = array_merge($eventIDs, $unitID);
-			$eventIDs = array_unique($eventIDs);
-			if ($this->error == true) {
-				return false;
-			}
+		$soap_request = $doc->saveXML();
+		$response1 = $this->__doRequest($soap_request, "readUnit");
+		if ($response1 == false) {
+			return false;
 		}
-		//get all information on each event
-		foreach ($eventIDs as $each_event) {
-			$events[] = $this->readUnit(intval($each_event));
-			if ($this->error == true) {
+		$response2 = $this->toArray($response1);
+		if ($response2 != false) {
+			if (isset($response2['soapenvBody']['soapenvFault'])) {
+				$this->error = true;
+				$this->errormsg = $response2['soapenvBody']['soapenvFault']['faultcode'] . " " . $response2['soapenvBody']['soapenvFault']['faultstring'];
+				return false;
+			} elseif (isset($response2['soapenvBody']['hisreadUnitResponse'])) {
+				$this->error = false;
+				$response3 = $response2['soapenvBody']['hisreadUnitResponse'];
+				return $response3;
+			} else {
+				$this->error = true;
+				$this->errormsg = "url send a xml in a wrong format";
 				return false;
 			}
 		}
-		$currentWeek = $this->getCurrentWeekDates();
-		try {
-			foreach ($param as $room) {
-				$timetable = array();
-				//Here I go over the soapresponse
-				foreach ($events as $event) {
-					$title = $event['hisunit']['hisplanelements']['hisplanelement'][0]['hisdefaulttext'];
-					foreach ($event as $subject) {
-						$units = $subject['hisplanelements']['hisplanelement'];
-						foreach ($units as $unit) {
-							$pdates = $unit['hisplannedDates']['hisplannedDate'];
-							//there seems to be a bug that gives more than one individualDates in plannedDate
-							//this construction catches it
-							if (array_key_exists('hisindividualDates', $pdates)) {
-								$dates = $pdates['hisindividualDates']['hisindividualDate'];
-								foreach ($dates as $date) {
-									$roomID = $date['hisroomId'];
-									$datum = $date['hisexecutiondate'];
-									if (intval($roomID) == $room && in_array($datum, $currentWeek)) {
-										$startTime = $date['hisstarttime'];
-										$endTime = $date['hisendtime'];
-										$json = array(
-											'title' => $title,
-											'start' => $datum . " " . $startTime,
-											'end' => $datum . " " . $endTime
-										);
-										array_push($timetable, $json);
-									}
-								}
-							} else {
-								foreach ($pdates as $dates2) {
-									$dates = $dates2['hisindividualDates']['hisindividualDate'];
-									foreach ($dates as $date) {
-										$roomID = $date['hisroomId'];
-										$datum = $date['hisexecutiondate'];
-										if (intval($roomID) == $room && in_array($datum, $currentWeek)) {
-
-											$startTime = $date['hisstarttime'];
-											$endTime = $date['hisendtime'];
-											$json = array(
-												'title' => $title,
-												'start' => $datum . " " . $startTime,
-												'end' => $datum . " " . $endTime
-											);
-											array_push($timetable, $json);
-										}
-									}
-								}
-							}
-						}
-					}
-				}
-				$tTables[$room] = $timetable;
-			}
-		} catch (Exception $e) {
-			$this->error = true;
-			$this->errormsg = "url returns a wrong xml";
-			return false;
-		}
-		return $tTables;
+		return false;
 	}
 
-
 	private function getCurrentWeekDates()
 	{
 		$DateArray = array();
-- 
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