From a2ebc6c3b2ec3e420a03e36faf00c6e3bf3f25e7 Mon Sep 17 00:00:00 2001
From: Frederic Guillot <fred@kanboard.net>
Date: Sun, 25 Oct 2015 18:11:49 -0400
Subject: Move some classes to namespace Core\Http

---
 app/Core/Http/Client.php | 163 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 163 insertions(+)
 create mode 100644 app/Core/Http/Client.php

(limited to 'app/Core/Http/Client.php')

diff --git a/app/Core/Http/Client.php b/app/Core/Http/Client.php
new file mode 100644
index 00000000..c6bf36a6
--- /dev/null
+++ b/app/Core/Http/Client.php
@@ -0,0 +1,163 @@
+<?php
+
+namespace Kanboard\Core\Http;
+
+use Kanboard\Core\Base;
+
+/**
+ * HTTP client
+ *
+ * @package  http
+ * @author   Frederic Guillot
+ */
+class Client extends Base
+{
+    /**
+     * HTTP connection timeout in seconds
+     *
+     * @var integer
+     */
+    const HTTP_TIMEOUT = 5;
+
+    /**
+     * Number of maximum redirections for the HTTP client
+     *
+     * @var integer
+     */
+    const HTTP_MAX_REDIRECTS = 2;
+
+    /**
+     * HTTP client user agent
+     *
+     * @var string
+     */
+    const HTTP_USER_AGENT = 'Kanboard';
+
+    /**
+     * Send a GET HTTP request and parse JSON response
+     *
+     * @access public
+     * @param  string     $url
+     * @param  string[]   $headers
+     * @return array
+     */
+    public function getJson($url, array $headers = array())
+    {
+        $response = $this->doRequest('GET', $url, '', array_merge(array('Accept: application/json'), $headers));
+        return json_decode($response, true) ?: array();
+    }
+
+    /**
+     * Send a POST HTTP request encoded in JSON
+     *
+     * @access public
+     * @param  string     $url
+     * @param  array      $data
+     * @param  string[]   $headers
+     * @return string
+     */
+    public function postJson($url, array $data, array $headers = array())
+    {
+        return $this->doRequest(
+            'POST',
+            $url,
+            json_encode($data),
+            array_merge(array('Content-type: application/json'), $headers)
+        );
+    }
+
+    /**
+     * Send a POST HTTP request encoded in www-form-urlencoded
+     *
+     * @access public
+     * @param  string     $url
+     * @param  array      $data
+     * @param  string[]   $headers
+     * @return string
+     */
+    public function postForm($url, array $data, array $headers = array())
+    {
+        return $this->doRequest(
+            'POST',
+            $url,
+            http_build_query($data),
+            array_merge(array('Content-type: application/x-www-form-urlencoded'), $headers)
+        );
+    }
+
+    /**
+     * Make the HTTP request
+     *
+     * @access private
+     * @param  string     $method
+     * @param  string     $url
+     * @param  string     $content
+     * @param  string[]   $headers
+     * @return string
+     */
+    private function doRequest($method, $url, $content, array $headers)
+    {
+        if (empty($url)) {
+            return '';
+        }
+
+        $stream = @fopen(trim($url), 'r', false, stream_context_create($this->getContext($method, $content, $headers)));
+        $response = '';
+
+        if (is_resource($stream)) {
+            $response = stream_get_contents($stream);
+        } else {
+            $this->logger->error('HttpClient: request failed');
+        }
+
+        if (DEBUG) {
+            $this->logger->debug('HttpClient: url='.$url);
+            $this->logger->debug('HttpClient: payload='.$content);
+            $this->logger->debug('HttpClient: metadata='.var_export(@stream_get_meta_data($stream), true));
+            $this->logger->debug('HttpClient: response='.$response);
+        }
+
+        return $response;
+    }
+
+    /**
+     * Get stream context
+     *
+     * @access private
+     * @param  string     $method
+     * @param  string     $content
+     * @param  string[]   $headers
+     * @return array
+     */
+    private function getContext($method, $content, array $headers)
+    {
+        $default_headers = array(
+            'User-Agent: '.self::HTTP_USER_AGENT,
+            'Connection: close',
+        );
+
+        if (HTTP_PROXY_USERNAME) {
+            $default_headers[] = 'Proxy-Authorization: Basic '.base64_encode(HTTP_PROXY_USERNAME.':'.HTTP_PROXY_PASSWORD);
+        }
+
+        $headers = array_merge($default_headers, $headers);
+
+        $context = array(
+            'http' => array(
+                'method' => $method,
+                'protocol_version' => 1.1,
+                'timeout' => self::HTTP_TIMEOUT,
+                'max_redirects' => self::HTTP_MAX_REDIRECTS,
+                'header' => implode("\r\n", $headers),
+                'content' => $content
+            )
+        );
+
+        if (HTTP_PROXY_HOSTNAME) {
+            $context['http']['proxy'] = 'tcp://'.HTTP_PROXY_HOSTNAME.':'.HTTP_PROXY_PORT;
+            $context['http']['request_fulluri'] = true;
+        }
+
+        return $context;
+    }
+}
-- 
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