X-Git-Url: https://git.ao2.it/tweeper.git/blobdiff_plain/f82b9f8a651307d7c6ba52c2d1d7da3dcc696189..f10331c2001ba9ac72b8ccede428a98dcd9282e8:/tweeper.php

diff --git a/tweeper.php b/tweeper.php
index bdba04d..94d91c3 100644
--- a/tweeper.php
+++ b/tweeper.php
@@ -20,74 +20,10 @@
 
 date_default_timezone_set('UTC');
 
-define('USER_AGENT', 'Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20130405 Firefox/22.0');
-
-function str_to_gmdate($date)
-{
-  $timestamp = strtotime($date);
-  return epoch_to_gmdate($timestamp);
-}
-
-function epoch_to_gmdate($timestamp)
-{
-  return gmdate('D, d M Y H:i:s', $timestamp) . ' GMT';
-}
-
-function get_url_info($url)
-{
-  $ch = curl_init($url);
-  curl_setopt_array($ch, array(
-      CURLOPT_HEADER => TRUE,
-      CURLOPT_NOBODY => TRUE,
-      CURLOPT_FOLLOWLOCATION => TRUE,  // follow http redirects to get the real URL
-      CURLOPT_RETURNTRANSFER => TRUE,
-      CURLOPT_SSL_VERIFYHOST => FALSE,
-      CURLOPT_SSL_VERIFYPEER => FALSE,
-      CURLOPT_USERAGENT => USER_AGENT,
-  ));
-  curl_exec($ch);
-  $url_info = curl_getinfo($ch);;
-  curl_close($ch);
-
-  return $url_info;
-}
-
-function generate_enclosure($url)
-{
-  $url_info = get_url_info($url);
-
-  switch($url_info['content_type']) {
-    case "video/avi":
-    case "image/gif":
-    case "image/jpeg":
-    case "audio/x-midi":
-    case "audio/mpeg":
-    case "video/mpeg":
-    case "audio/vorbis":
-    case "application/ogg":
-    case "audio/webm":
-    case "audio/aac":
-    case "audio/mp4":
-    case "audio/wav":
-    case "video/mp4":
-    case "video/ogg":
-      $dom = new DomDocument();
-      $enc = $dom->createElement('enclosure');
-      $enc->setAttribute( 'url', $url_info['url']);
-      $enc->setAttribute( 'length', $url_info['download_content_length']);
-      $enc->setAttribute( 'type', $url_info['content_type']);
-
-      $dom->appendChild($enc);
-
-      return $dom->saveXML($enc);
-    default:
-        return;
-  }
-}
-
-
 class Tweeper {
 
+  private static $USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20130405 Firefox/22.0";
+
   public function __construct($stylesheet, $generate_enclosure = FALSE) {
     $stylesheet_contents = $this->get_contents($stylesheet);
 
@@ -100,14 +36,25 @@ class Tweeper {
     $this->xsltProcessor->importStylesheet($xslDoc);
   }
 
-  private function get_contents($uri) {
+  public static function epoch_to_gmdate($timestamp)
+  {
+    return gmdate('D, d M Y H:i:s', $timestamp) . ' GMT';
+  }
+
+  public static function str_to_gmdate($date)
+  {
+    $timestamp = strtotime($date);
+    return Tweeper::epoch_to_gmdate($timestamp);
+  }
+
+  private static function get_contents($uri) {
     # https://www.wjsams.com/c/docs/Wiki/Php-HowToSetUserAgentOnFileGetContents
     $opts = array(
       'http' => array(
         'method' => "GET",
         'header' => join(array(
           "Accept-language: en\r\n",
-          "User-Agent: {" + USER_AGENT + "}\r\n"
+          "User-Agent: {" + Tweeper::$USER_AGENT + "}\r\n"
         ))
       )
     );
@@ -117,8 +64,65 @@ class Tweeper {
     return $contents;
   }
 
+  private static function get_info($url)
+  {
+    $ch = curl_init($url);
+    curl_setopt_array($ch, array(
+        CURLOPT_HEADER => TRUE,
+        CURLOPT_NOBODY => TRUE,
+        CURLOPT_FOLLOWLOCATION => TRUE,  // follow http redirects to get the real URL
+        CURLOPT_RETURNTRANSFER => TRUE,
+        CURLOPT_SSL_VERIFYHOST => FALSE,
+        CURLOPT_SSL_VERIFYPEER => FALSE,
+        CURLOPT_USERAGENT => Tweeper::$USER_AGENT,
+    ));
+    curl_exec($ch);
+    $url_info = curl_getinfo($ch);
+    curl_close($ch);
+
+    return $url_info;
+  }
+
+  public static function generate_enclosure($url)
+  {
+    $supported_content_types = array(
+      "application/ogg",
+      "audio/aac",
+      "audio/mp4",
+      "audio/mpeg",
+      "audio/vorbis",
+      "audio/wav",
+      "audio/webm",
+      "audio/x-midi",
+      "image/gif",
+      "image/jpeg",
+      "video/avi",
+      "video/mp4",
+      "video/mpeg",
+      "video/ogg",
+    );
+
+    $url_info = Tweeper::get_info($url);
+
+    $supported = in_array($url_info['content_type'], $supported_content_types);
+    if (!$supported) {
+      error_log("Unsupported enclosure content type \"" . $url_info['content_type'] . "\" for URL: " . $url_info['url']);
+      return '';
+    }
+
+    $dom = new DomDocument();
+    $enc = $dom->createElement('enclosure');
+    $enc->setAttribute('url', $url_info['url']);
+    $enc->setAttribute('length', $url_info['download_content_length']);
+    $enc->setAttribute('type', $url_info['content_type']);
+
+    $dom->appendChild($enc);
+
+    return $dom->saveXML($enc);
+  }
+
   public function tweep($uri) {
-    $html = $this->get_contents($uri);
+    $html = Tweeper::get_contents($uri);
 
     $xmlDoc = new DOMDocument();
     $xmlDoc->loadHTML($html);