Merge branch 'feature-69528/reihungstestueberwachung_constructor'

include/externe_ueberwachung.class.php

@@ -0,0 +1,216 @@
+<?php
+
+require_once(dirname(__FILE__).'/basis_db.class.php');
+require_once(dirname(__FILE__).'/prestudent.class.php');
+require_once(dirname(__FILE__).'/person.class.php');
+require_once(dirname(__FILE__).'/reihungstest.class.php');
+
+require_once(dirname(__FILE__).'/../vendor/autoload.php');
+use Firebase\JWT\JWT;
+
+class externeUeberwachung extends basis_db
+{
+	public function __construct()
+	{
+		parent::__construct();
+	}
+
+	public function getStatusByPrestudent($prestudent_id)
+	{
+		$session_id = $this->getSessionByPrestudent($prestudent_id);
+		return $this->getSessionStatus($session_id);
+	}
+	public function start($prestudent_id, $reihungstest_id, $sprache)
+	{
+		$session_id = $this->getSessionByPrestudent($prestudent_id);
+
+		if (!$session_id)
+		{
+			$session_id = $this->createSession($prestudent_id);
+		}
+		else
+		{
+			$status = $this->getSessionStatus($session_id);
+
+			if (in_array($status, array('late_to_start', 'finished')))
+			{
+				$session_id = $this->createSession($prestudent_id);
+			}
+		}
+
+		$payload = $this->getPayload($session_id, $prestudent_id, $reihungstest_id, $sprache);
+		return $this->getStartUrl($payload);
+	}
+
+
+	private function createSession($prestudent_id)
+	{
+		if (is_null($prestudent_id))
+		{
+			$this->errormsg = 'Falsche Parameterübergabe';
+			return false;
+		}
+
+		$uuid = $this->genereateUUID();
+
+		$qry = "INSERT INTO testtool.tbl_externe_ueberwachung (prestudent_id, session_id)
+				VALUES (".
+			$this->db_add_param($prestudent_id).",".
+			$this->db_add_param($uuid).")";
+
+		if($this->db_query($qry))
+		{
+			return $uuid;
+		}
+		else
+		{
+			$this->errormsg = 'Fehler beim Speichern der Antwort';
+			return false;
+		}
+	}
+	public function getSessionByPrestudent($prestudent_id)
+	{
+		if (is_null($prestudent_id))
+		{
+			$this->errormsg = 'Falsche Parameterübergabe';
+			return false;
+		}
+
+		$qry = "SELECT session_id
+				FROM testtool.tbl_externe_ueberwachung
+				WHERE prestudent_id = ".$this->db_add_param($prestudent_id, FHC_INTEGER) . "
+				ORDER BY insertamum DESC
+				LIMIT 1";
+
+		if($result = $this->db_query($qry))
+		{
+			if ($row = $this->db_fetch_object($result))
+			{
+				return $row->session_id;
+			}
+			else
+			{
+				$this->errormsg = 'Daten konnten nicht geladen werden';
+				return false;
+			}
+		}
+		else
+		{
+			$this->errormsg = 'Fehler bei einer Abfrage';
+			return false;
+		}
+	}
+
+	public function getSessionStatus($session_id)
+	{
+		$payload = $this->getSessionPayload($session_id);
+		$jwt = $this->createToken($payload);
+
+		$url = $this->getSessionUrl($session_id);
+
+		$ch = curl_init($url);
+		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+		curl_setopt($ch, CURLOPT_HTTPHEADER, [
+			"Authorization: JWT {$jwt}",
+			"Content-Type: application/json",
+		]);
+		curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
+
+		$response = curl_exec($ch);
+		$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+
+		curl_close($ch);
+
+		$data = json_decode($response, true);
+		return isset($data['status']) ? $data['status'] : false;
+	}
+
+	private function getSessionPayload($session_id)
+	{
+		return [
+			"session_id" => $session_id,
+			"iat" => time(),
+			"exp" => time() + 120,
+		];
+	}
+
+	private function getPayload($session_id, $prestudent_id, $reihungstest_id, $sprache)
+	{
+		$prestudent = new prestudent($prestudent_id);
+		$person = new Person($prestudent->person_id);
+
+		$reihungstest = new Reihungstest($reihungstest_id);
+
+		$datetime = new DateTime();
+		$today = $datetime->format('Y-m-d');
+
+		$payload = [
+			"userId" => $prestudent_id,
+			"lastName" => $person->nachname,
+			"firstName" => $person->vorname,
+			"language" => $sprache === 'German' ? 'de' : 'en',
+			"accountName" => "technikum_wien",
+			"accountId" => "technikum_wien",
+			"examId" => $reihungstest_id . '_' . $today,
+			"examName" => !is_null(trim($reihungstest->anmerkung)) ? ($reihungstest->anmerkung . '_' . $today) : ($reihungstest_id . '_' . $today),
+			"duration" => 1440,
+			"schedule" => false,
+			"trial" => EXTERNE_UEBERWACHUNG_TRIAL_TEST,
+			"proctoring" => "offline",
+			"startDate" => $reihungstest->datum . 'T00:00:00Z',
+			"endDate" => $reihungstest->datum . 'T23:59:59Z',
+			"sessionId" => $session_id,
+			"sessionUrl" => EXTERNE_UEBERWACHUNG_SESSION_URL
+		];
+
+		if (defined('EXTERNE_UEBERWACHUNG_EXAM_PARAMS'))
+		{
+			$payload = array_merge($payload, EXTERNE_UEBERWACHUNG_EXAM_PARAMS);
+		}
+
+		if (defined('EXTERNE_UEBERWACHUNG_EXAM_RULES'))
+		{
+			$payload['rules'] = EXTERNE_UEBERWACHUNG_EXAM_RULES;
+		}
+
+		if (defined('EXTERNE_UEBERWACHUNG_EXAM_SCORE'))
+		{
+			$payload['scoreConfig'] = EXTERNE_UEBERWACHUNG_EXAM_SCORE;
+		}
+
+		return $payload;
+	}
+
+	private function getSessionUrl($session_id)
+	{
+		return EXTERNE_UEBERWACHUNG_PROTOCOL_URL . "/api/v2/integration/simple/". EXTERNE_UEBERWACHUNG_INTEGRATION_NAME . "/sessions/". urlencode($session_id) ."/status/";
+	}
+
+	private function getStartUrl($payload)
+	{
+		$token = $this->createToken($payload);
+		$query = http_build_query(['token' => $token]);
+
+		return EXTERNE_UEBERWACHUNG_PROTOCOL_URL . '/integration/simple/'. EXTERNE_UEBERWACHUNG_INTEGRATION_NAME .'/start?' . $query;
+	}
+
+	private function createToken($payload)
+	{
+		return JWT::encode($payload, EXTERNE_UEBERWACHUNG_SECRET_KEY, 'HS256');
+	}
+
+	private function genereateUUID()
+	{
+		$data = openssl_random_pseudo_bytes(16);
+
+		$data[6] = chr(ord($data[6]) & 0x0f | 0x40);
+		$data[8] = chr(ord($data[8]) & 0x3f | 0x80);
+
+		return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
+	}
+}
+
+?>
+
+
+

include/reihungstest.class.php

@@ -63,6 +63,7 @@ class reihungstest extends basis_db
 	
 	public $zugangs_ueberpruefung = false; //boolean
 	public $zugangscode; //smallint
+	public $externe_ueberwachung = false; //boolean
 
 
 	/**
@@ -119,6 +120,7 @@ class reihungstest extends basis_db
 				$this->aufnahmegruppe_kurzbz = $row->aufnahmegruppe_kurzbz;
 				$this->zugangs_ueberpruefung = $this->db_parse_bool($row->zugangs_ueberpruefung);
 				$this->zugangscode = $row->zugangscode;
+				$this->externe_ueberwachung = $this->db_parse_bool($row->externe_ueberwachung);
 
 				return true;
 			}
@@ -234,7 +236,7 @@ class reihungstest extends basis_db
 
 			$qry = 'BEGIN; INSERT INTO public.tbl_reihungstest (studiengang_kz, ort_kurzbz, anmerkung, datum, uhrzeit,
 				insertamum, insertvon, updateamum, updatevon, max_teilnehmer, oeffentlich, freigeschaltet,
-				studiensemester_kurzbz, stufe, anmeldefrist, aufnahmegruppe_kurzbz, zugangs_ueberpruefung, zugangscode) VALUES('.
+				studiensemester_kurzbz, stufe, anmeldefrist, aufnahmegruppe_kurzbz, zugangs_ueberpruefung, zugangscode, externe_ueberwachung) VALUES('.
 				$this->db_add_param($this->studiengang_kz, FHC_INTEGER).', '.
 				$this->db_add_param($this->ort_kurzbz).', '.
 				$this->db_add_param($this->anmerkung).', '.
@@ -250,7 +252,8 @@ class reihungstest extends basis_db
 				$this->db_add_param($this->anmeldefrist).','.
 				$this->db_add_param($this->aufnahmegruppe_kurzbz). ',' .
 				$this->db_add_param($this->zugangs_ueberpruefung, FHC_BOOLEAN).','.
-				$this->db_add_param($this->zugangscode) . ');';
+				$this->db_add_param($this->zugangscode) . ','.
+				$this->db_add_param($this->externe_ueberwachung, FHC_BOOLEAN) . ');';
 		}
 		else
 		{
@@ -270,7 +273,8 @@ class reihungstest extends basis_db
 				'anmeldefrist='.$this->db_add_param($this->anmeldefrist).', '.
 				'aufnahmegruppe_kurzbz='.$this->db_add_param($this->aufnahmegruppe_kurzbz).', '.
 				'zugangs_ueberpruefung='.$this->db_add_param($this->zugangs_ueberpruefung, FHC_BOOLEAN).', '.
-				'zugangscode='.$this->db_add_param($this->zugangscode).' '.
+				'zugangscode='.$this->db_add_param($this->zugangscode).', '.
+				'externe_ueberwachung='.$this->db_add_param($this->externe_ueberwachung, FHC_BOOLEAN).' '.
 				'WHERE reihungstest_id='.$this->db_add_param($this->reihungstest_id, FHC_INTEGER, false).';';
 		}