1 files changed, 110 insertions, 0 deletions
diff --git a/lib/elearning/LonCapaRequest.php b/lib/elearning/LonCapaRequest.php
new file mode 100644
index 0000000..ecf3075
--- /dev/null
+++ b/lib/elearning/LonCapaRequest.php
@@ -0,0 +1,110 @@
+<?php
+/**
+ *
+ * This class is used to communicate with LonCapa
+ *
+ * @depends curl
+ * @modulegroup  elearning_interface_modules
+ * @module       LonCapaContentModule
+ * @package  ELearning-Interface
+ */
+class LonCapaRequest
+{
+    /**
+     * options for curl
+     * @var array
+     */
+    protected $options;
+    /**
+     * curl resource
+     * @var resource
+     */
+    protected $ch;
+
+    /**
+     * LonCapaRequest constructor.
+     */
+    public function __construct()
+    {
+        $this->ch = curl_init();
+        $this->initOptions();
+    }
+
+    /**
+     * initializes curl options
+     */
+    public function initOptions()
+    {
+        $this->options = [
+            CURLOPT_RETURNTRANSFER => true,
+            CURLOPT_FOLLOWLOCATION => true,
+            //CURLOPT_CAINFO => '',
+            CURLOPT_SSL_VERIFYPEER => false,
+            CURLOPT_SSL_VERIFYHOST => false
+        ];
+    }
+
+    /**
+     * close connection
+     */
+    public function __destruct()
+    {
+        curl_close($this->ch);
+    }
+
+    /**
+     * set curl options
+     * @param $key
+     * @param $value
+     */
+    public function setOption($key, $value)
+    {
+        $this->options[$key] = $value;
+    }
+
+    /**
+     * do a curl request on the given url and return the result if successfull
+     *
+     * @param $url string
+     * @param array $postfields
+     * @return string
+     */
+    public function request($url, $postfields = null)
+    {
+        $result = $this->sendRequest($url, $postfields);
+        if ($result['statusCode'] == 200) {
+            return $result['response'];
+        } else {
+            // TODO: fehlermeldung wäre schöner
+            return null;
+        }
+    }
+
+    /**
+     * do a curl request on the given url and return the result if successfull
+     * @param $url string
+     * @param array $postfields
+     * @return array
+     */
+    protected function sendRequest($url, $postfields = null)
+    {
+        $options = $this->options;
+        $options[CURLOPT_URL] = $url;
+
+        if ($postfields) {
+            $options[CURLOPT_POST] = true;
+            $options[CURLOPT_POSTFIELDS] = $postfields;
+        }
+
+        curl_setopt_array($this->ch, $options);
+        $response = curl_exec($this->ch);
+
+        $statusCode = curl_getinfo($this->ch, CURLINFO_HTTP_CODE);
+
+        if ($response === false) {
+            $last_error = curl_error($this->ch);
+            Log::error(__CLASS__ . ' curl_exec failed: ' . $last_error);
+        }
+        return compact('statusCode', 'response');
+    }
+}