| <?php | |
| namespace XRay\Formats; | |
| 
 | |
| use HTMLPurifier, HTMLPurifier_Config; | |
| use Parse; | |
| 
 | |
| class Mf2 { | |
| 
 | |
|   public static function parse($mf2, $url, $http) { | |
|     if(count($mf2['items']) == 0) | |
|       return false; | |
| 
 | |
|     // If there is only one item on the page, just use that | |
|     if(count($mf2['items']) == 1) { | |
|       $item = $mf2['items'][0]; | |
|       if(in_array('h-entry', $item['type']) || in_array('h-cite', $item['type'])) { | |
|         Parse::debug("mf2:0: Recognized $url as an h-entry it is the only item on the page"); | |
|         return self::parseAsHEntry($mf2, $item, $http); | |
|       } | |
|       if(in_array('h-event', $item['type'])) { | |
|         Parse::debug("mf2:0: Recognized $url as an h-event it is the only item on the page"); | |
|         return self::parseAsHEvent($mf2, $item, $http); | |
|       } | |
|       if(in_array('h-review', $item['type'])) { | |
|         Parse::debug("mf2:0: Recognized $url as an h-review it is the only item on the page"); | |
|         return self::parseAsHReview($mf2, $item, $http); | |
|       } | |
|       if(in_array('h-recipe', $item['type'])) { | |
|         Parse::debug("mf2:0: Recognized $url as an h-recipe it is the only item on the page"); | |
|         return self::parseAsHRecipe($mf2, $item, $http); | |
|       } | |
|       if(in_array('h-product', $item['type'])) { | |
|         Parse::debug("mf2:0: Recognized $url as an h-product it is the only item on the page"); | |
|         return self::parseAsHProduct($mf2, $item, $http); | |
|       } | |
|       if(in_array('h-feed', $item['type'])) { | |
|         Parse::debug("mf2:0: Recognized $url as an h-feed because it is the only item on the page"); | |
|         return self::parseAsHFeed($mf2, $http); | |
|       } | |
|       if(in_array('h-card', $item['type'])) { | |
|         Parse::debug("mf2:0: Recognized $url as an h-card it is the only item on the page"); | |
|         return self::parseAsHCard($item, $http, $url); | |
|       } | |
|     } | |
| 
 | |
|     // Check the list of items on the page to see if one matches the URL of the page,  | |
|     // and treat as a permalink for that object if so. Otherwise, parse as a feed. | |
|     foreach($mf2['items'] as $item) { | |
|       if(array_key_exists('url', $item['properties'])) { | |
|         $urls = $item['properties']['url']; | |
|         $urls = array_map('self::normalize_url', $urls); | |
|         if(in_array($url, $urls)) { | |
|           Parse::debug("mf2:1: Recognized $url as a permalink because an object on the page matched the URL of the request"); | |
|           if(in_array('h-card', $item['type'])) { | |
|             return self::parseAsHCard($item, $http, $url); | |
|           } elseif(in_array('h-entry', $item['type']) || in_array('h-cite', $item['type'])) { | |
|             return self::parseAsHEntry($mf2, $item, $http); | |
|           } elseif(in_array('h-event', $item['type'])) { | |
|             return self::parseAsHEvent($mf2, $item, $http); | |
|           } elseif(in_array('h-review', $item['type'])) { | |
|             return self::parseAsHReview($mf2, $item, $http); | |
|           } elseif(in_array('h-recipe', $item['type'])) { | |
|             return self::parseAsHRecipe($mf2, $item, $http); | |
|           } elseif(in_array('h-product', $item['type'])) { | |
|             return self::parseAsHProduct($mf2, $item, $http); | |
|           } else { | |
|             Parse::debug('This object was not a recognized type.'); | |
|             return false; | |
|           } | |
|         } | |
|       } | |
|     } | |
| 
 | |
|     // Check for an h-card matching rel=author or the author URL of any h-* on the page, | |
|     // and return the h-* object if so | |
|     if(isset($mf2['rels']['author'])) { | |
|       foreach($mf2['items'] as $card) { | |
|         if(in_array('h-card', $card['type']) && array_key_exists('url', $card['properties'])) { | |
|           $urls = $card['properties']['url']; | |
|           $urls = array_map('self::normalize_url', $urls); | |
|           if(count(array_intersect($urls, $mf2['rels']['author'])) > 0) { | |
|             // There is an author h-card on this page | |
|             // Now look for the first h-* object other than an h-card and use that as the object | |
|             foreach($mf2['items'] as $item) { | |
|               if(!in_array('h-card', $item['type'])) { | |
|                 if(in_array('h-entry', $item['type']) || in_array('h-cite', $item['type'])) { | |
|                   return self::parseAsHEntry($mf2, $item, $http); | |
|                 } elseif(in_array('h-event', $item['type'])) { | |
|                   return self::parseAsHEvent($mf2, $item, $http); | |
|                 } elseif(in_array('h-review', $item['type'])) { | |
|                   return self::parseAsHReview($mf2, $item, $http); | |
|                 } elseif(in_array('h-recipe', $item['type'])) { | |
|                   return self::parseAsHRecipe($mf2, $item, $http); | |
|                 } elseif(in_array('h-product', $item['type'])) { | |
|                   return self::parseAsHProduct($mf2, $item, $http); | |
|                 } | |
|               } | |
|             } | |
|           } | |
|         } | |
|       } | |
|     } | |
| 
 | |
|     // If there was more than one h-entry on the page, treat the whole page as a feed | |
|     if(count($mf2['items']) > 1) { | |
|       if(count(array_filter($mf2['items'], function($item){ | |
|         return in_array('h-entry', $item['type']); | |
|       })) > 1) { | |
|         Parse::debug("mf2:2: Recognized $url as an h-feed because there are more than one object on the page"); | |
|         return self::parseAsHFeed($mf2, $http); | |
|       } | |
|     } | |
| 
 | |
|     // If the first item is an h-feed, parse as a feed | |
|     $first = $mf2['items'][0]; | |
|     if(in_array('h-feed', $first['type'])) { | |
|       Parse::debug("mf2:3: Recognized $url as an h-feed because the first item is an h-feed"); | |
|       return self::parseAsHFeed($mf2, $http); | |
|     } | |
| 
 | |
|     // Fallback case, but hopefully we have found something before this point | |
|     foreach($mf2['items'] as $item) { | |
|       // Otherwise check for a recognized h-entr* object | |
|       if(in_array('h-entry', $item['type']) || in_array('h-cite', $item['type'])) { | |
|         Parse::debug("mf2:6: $url is falling back to the first h-entry on the page"); | |
|         return self::parseAsHEntry($mf2, $item, $http); | |
|       } elseif(in_array('h-event', $item['type'])) { | |
|         Parse::debug("mf2:6: $url is falling back to the first h-event on the page"); | |
|         return self::parseAsHEvent($mf2, $item, $http); | |
|       } elseif(in_array('h-review', $item['type'])) { | |
|         Parse::debug("mf2:6: $url is falling back to the first h-review on the page"); | |
|         return self::parseAsHReview($mf2, $item, $http); | |
|       } elseif(in_array('h-recipe', $item['type'])) { | |
|         Parse::debug("mf2:6: $url is falling back to the first h-recipe on the page"); | |
|         return self::parseAsHReview($mf2, $item, $http); | |
|       } elseif(in_array('h-product', $item['type'])) { | |
|         Parse::debug("mf2:6: $url is falling back to the first h-product on the page"); | |
|         return self::parseAsHProduct($mf2, $item, $http); | |
|       } | |
|     } | |
| 
 | |
|     Parse::debug("mf2:E: No object at $url was recognized"); | |
| 
 | |
|     return false; | |
|   } | |
| 
 | |
|   private static function collectSingleValues($properties, $urlProperties, $item, &$data) { | |
|     foreach($properties as $p) { | |
|       if(($v = self::getPlaintext($item, $p)) !== null) { | |
|         $data[$p] = $v; | |
|       } | |
|     } | |
|     foreach($urlProperties as $p) { | |
|       if(($v = self::getPlaintext($item, $p)) !== null) { | |
|         if(self::isURL($v)) | |
|           $data[$p] = $v; | |
|       } | |
|     } | |
|   } | |
| 
 | |
|   private static function parseHTMLValue($property, $item) { | |
|     if(!array_key_exists($property, $item['properties'])) | |
|       return null; | |
| 
 | |
|     $textContent = false; | |
|     $htmlContent = false; | |
| 
 | |
|     $content = $item['properties'][$property][0]; | |
|     if(is_string($content)) { | |
|       $textContent = $content; | |
|     } elseif(!is_string($content) && is_array($content) && array_key_exists('value', $content)) { | |
|       if(array_key_exists('html', $content)) { | |
|         $htmlContent = trim(self::sanitizeHTML($content['html'])); | |
|         #$textContent = trim(str_replace("
","\r",strip_tags($htmlContent))); | |
|         $textContent = trim(str_replace("
","\r",$content['value'])); | |
|       } else { | |
|         $textContent = trim($content['value']); | |
|       } | |
|     } | |
| 
 | |
|     $data = [ | |
|       'text' => $textContent | |
|     ]; | |
|     if($htmlContent && $textContent != $htmlContent) { | |
|       $data['html'] = $htmlContent; | |
|     } | |
|     return $data; | |
|   } | |
| 
 | |
|   // Always return arrays, and may contain plaintext content | |
|   // Nested objects are added to refs and the URL is used as the value if present | |
|   private static function collectArrayValues($properties, $item, &$data, &$refs, &$http) { | |
|     foreach($properties as $p) { | |
|       if(array_key_exists($p, $item['properties'])) { | |
|         foreach($item['properties'][$p] as $v) { | |
|           if(is_string($v)) { | |
|             if(!array_key_exists($p, $data)) $data[$p] = []; | |
|             if(!in_array($v, $data[$p])) | |
|               $data[$p][] = $v; | |
|           } elseif(self::isMicroformat($v)) { | |
|             if(($u=self::getPlaintext($v, 'url')) && self::isURL($u)) { | |
|               if(!array_key_exists($p, $data)) $data[$p] = []; | |
|               if(!in_array($u, $data[$p])) | |
|                 $data[$p][] = $u; | |
|               $ref = self::parse(['items'=>[$v]], $u, $http); | |
|               if($ref) { | |
|                 $refs[$u] = $ref['data']; | |
|               } | |
|             } else { | |
|               if(!array_key_exists($p, $data)) $data[$p] = []; | |
|               if(!in_array($v['value'], $data[$p])) | |
|                 $data[$p][] = $v['value']; | |
|             } | |
|           } | |
|         } | |
|       } | |
|     } | |
|   } | |
| 
 | |
|   private static function collectArrayURLValues($properties, $item, &$data, &$refs, &$http) { | |
|     foreach($properties as $p) { | |
|       if(array_key_exists($p, $item['properties'])) { | |
|         foreach($item['properties'][$p] as $v) { | |
|           if(is_string($v) && self::isURL($v)) { | |
|             if(!array_key_exists($p, $data)) $data[$p] = []; | |
|             $data[$p][] = $v; | |
|           } | |
|           elseif(self::isMicroformat($v) && ($u=self::getPlaintext($v, 'url')) && self::isURL($u)) { | |
|             if(!array_key_exists($p, $data)) $data[$p] = []; | |
|             $data[$p][] = $u; | |
|             // parse the object and put the result in the "refs" object | |
|             $ref = self::parse(['items'=>[$v]], $u, $http); | |
|             if($ref) { | |
|               $refs[$u] = $ref['data']; | |
|             } | |
|           } | |
|         } | |
|       }       | |
|     } | |
|   } | |
| 
 | |
|   private static function determineNameAndContent($item, &$data) { | |
|     // Determine if the name is distinct from the content | |
|     $name = self::getPlaintext($item, 'name'); | |
| 
 | |
|     $textContent = null; | |
|     $htmlContent = null; | |
| 
 | |
|     $content = self::parseHTMLValue('content', $item); | |
|     if($content) { | |
|       $htmlContent = array_key_exists('html', $content) ? $content['html'] : null; | |
|       $textContent = array_key_exists('text', $content) ? $content['text'] : null; | |
|     } | |
| 
 | |
|     if($content) { | |
|       // Trim ellipses from the name | |
|       $name = preg_replace('/ ?(\.\.\.|…)$/', '', $name); | |
| 
 | |
|       // Remove all whitespace when checking equality | |
|       $nameCompare = preg_replace('/\s/','',trim($name)); | |
|       $contentCompare = preg_replace('/\s/','',trim($textContent)); | |
| 
 | |
|       // Check if the name is a prefix of the content | |
|       if($contentCompare && $nameCompare && strpos($contentCompare, $nameCompare) === 0) { | |
|         $name = null; | |
|       } | |
|     } | |
| 
 | |
|     if($name) { | |
|       $data['name'] = $name; | |
|     } | |
| 
 | |
|     // If there is content, always return the plaintext content, and return HTML content if it's different | |
|     if($content) { | |
|       $data['content']['text'] = $content['text']; | |
|       if(array_key_exists('html', $content)) | |
|         $data['content']['html'] = $content['html']; | |
|     }     | |
|   } | |
| 
 | |
|   private static function parseAsHEntry($mf2, $item, $http) { | |
|     $data = [ | |
|       'type' => 'entry' | |
|     ]; | |
|     $refs = []; | |
| 
 | |
|     // Single plaintext and URL values | |
|     self::collectSingleValues(['published','summary','rsvp','swarm-coins'], ['url'], $item, $data); | |
| 
 | |
|     // These properties are always returned as arrays and may contain plaintext content | |
|     // First strip leading hashtags from category values if present | |
|     if(array_key_exists('category', $item['properties'])) { | |
|       foreach($item['properties']['category'] as $i=>$c) { | |
|         if(is_string($c)) | |
|           $item['properties']['category'][$i] = ltrim($c, '#'); | |
|       } | |
|     } | |
|     self::collectArrayValues(['category','invitee'], $item, $data, $refs, $http); | |
| 
 | |
|     // These properties are always returned as arrays and always URLs | |
|     // If the value is an h-* object with a URL, the URL is used and a "ref" is added as well | |
|     self::collectArrayURLValues(['photo','video','audio','syndication','in-reply-to','like-of','repost-of','bookmark-of'], $item, $data, $refs, $http); | |
| 
 | |
|     self::determineNameAndContent($item, $data); | |
| 
 | |
|     if($author = self::findAuthor($mf2, $item, $http)) | |
|       $data['author'] = $author; | |
| 
 | |
|     $response = [ | |
|       'data' => $data | |
|     ]; | |
| 
 | |
|     if(count($refs)) { | |
|       $response['refs'] = $refs; | |
|     } | |
| 
 | |
|     return $response; | |
|   } | |
| 
 | |
|   private static function parseAsHReview($mf2, $item, $http) { | |
|     $data = [ | |
|       'type' => 'review' | |
|     ]; | |
|     $refs = []; | |
| 
 | |
|     self::collectSingleValues(['summary','published','rating','best','worst'], ['url'], $item, $data); | |
| 
 | |
|     // Fallback for Mf1 "description" as content. The PHP parser does not properly map this to "content" | |
|     $description = self::parseHTMLValue('description', $item); | |
|     if($description) { | |
|       $data['content'] = $description; | |
|     } | |
| 
 | |
|     self::collectArrayValues(['category'], $item, $data, $refs, $http); | |
| 
 | |
|     self::collectArrayURLValues(['item'], $item, $data, $refs, $http); | |
| 
 | |
|     self::determineNameAndContent($item, $data); | |
| 
 | |
|     if($author = self::findAuthor($mf2, $item, $http)) | |
|       $data['author'] = $author; | |
| 
 | |
|     $response = [ | |
|       'data' => $data | |
|     ]; | |
| 
 | |
|     if(count($refs)) { | |
|       $response['refs'] = $refs; | |
|     } | |
| 
 | |
|     return $response; | |
|   } | |
| 
 | |
|   private static function parseAsHRecipe($mf2, $item, $http) { | |
|     $data = [ | |
|       'type' => 'recipe' | |
|     ]; | |
|     $refs = []; | |
| 
 | |
|     self::collectSingleValues(['name','summary','published','duration','yield','nutrition'], ['url'], $item, $data); | |
| 
 | |
|     $instructions = self::parseHTMLValue('instructions', $item); | |
|     if($instructions) { | |
|       $data['instructions'] = $instructions; | |
|     } | |
| 
 | |
|     self::collectArrayValues(['category','ingredient'], $item, $data, $refs, $http); | |
| 
 | |
|     self::collectArrayURLValues(['photo'], $item, $data, $refs, $http); | |
| 
 | |
|     if($author = self::findAuthor($mf2, $item, $http)) | |
|       $data['author'] = $author; | |
| 
 | |
|     $response = [ | |
|       'data' => $data | |
|     ]; | |
| 
 | |
|     if(count($refs)) { | |
|       $response['refs'] = $refs; | |
|     } | |
| 
 | |
|     return $response; | |
|   } | |
| 
 | |
|   private static function parseAsHProduct($mf2, $item, $http) { | |
|     $data = [ | |
|       'type' => 'product' | |
|     ]; | |
| 
 | |
|     self::collectSingleValues(['name','identifier','price'], ['url'], $item, $data); | |
| 
 | |
|     $description = self::parseHTMLValue('description', $item); | |
|     if($description) { | |
|       $data['description'] = $description; | |
|     } | |
| 
 | |
|     self::collectArrayValues(['category','brand'], $item, $data, $refs, $http); | |
| 
 | |
|     self::collectArrayURLValues(['photo','video','audio'], $item, $data, $refs, $http); | |
| 
 | |
|     $response = [ | |
|       'data' => $data | |
|     ]; | |
| 
 | |
|     if(count($refs)) { | |
|       $response['refs'] = $refs; | |
|     } | |
| 
 | |
|     return $response; | |
|   } | |
| 
 | |
|   private static function parseAsHEvent($mf2, $item, $http) { | |
|     $data = [ | |
|       'type' => 'event' | |
|     ]; | |
|     $refs = []; | |
| 
 | |
|     // Single plaintext and URL values | |
|     self::collectSingleValues(['name','summary','published','start','end','duration'], ['url'], $item, $data); | |
| 
 | |
|     // These properties are always returned as arrays and may contain plaintext content | |
|     self::collectArrayValues(['category','location','attendee'], $item, $data, $refs, $http); | |
| 
 | |
|     // These properties are always returned as arrays and always URLs | |
|     // If the value is an h-* object with a URL, the URL is used and a "ref" is added as well | |
|     self::collectArrayURLValues(['photo','video','audio','syndication'], $item, $data, $refs, $http); | |
| 
 | |
|     // If there is a description, always return the plaintext description, and return HTML description if it's different | |
|     $textDescription = null; | |
|     $htmlDescription = null; | |
|     if(array_key_exists('description', $item['properties'])) { | |
|       $description = $item['properties']['description'][0]; | |
|       if(is_string($description)) { | |
|         $textDescription = $description; | |
|       } elseif(!is_string($description) && is_array($description) && array_key_exists('value', $description)) { | |
|         if(array_key_exists('html', $description)) { | |
|           $htmlDescription = trim(self::sanitizeHTML($description['html'])); | |
|           $textDescription = trim(str_replace("
","\r",strip_tags($htmlDescription))); | |
|           $textDescription = trim(str_replace("
","\r",$description['value'])); | |
|         } else { | |
|           $textDescription = trim($description['value']); | |
|         } | |
|       } | |
|     } | |
| 
 | |
|     if($textDescription) { | |
|       $data['description'] = [ | |
|         'text' => $textDescription | |
|       ]; | |
|       if($htmlDescription && $textDescription != $htmlDescription) { | |
|         $data['description']['html'] = $htmlDescription; | |
|       } | |
|     } | |
| 
 | |
|     $response = [ | |
|       'data' => $data | |
|     ]; | |
| 
 | |
|     if(count($refs)) { | |
|       $response['refs'] = $refs; | |
|     } | |
| 
 | |
|     return $response; | |
|   } | |
| 
 | |
|   private static function parseAsHFeed($mf2, $http) { | |
|     $data = [ | |
|       'type' => 'feed', | |
|       'author' => [ | |
|         'type' => 'card', | |
|         'name' => null, | |
|         'url' => null, | |
|         'photo' => null | |
|       ], | |
|       'todo' => 'Not yet implemented. Please see https://github.com/aaronpk/XRay/issues/1' | |
|     ]; | |
| 
 | |
|     return [ | |
|       'data' => $data, | |
|       'entries' => [] | |
|     ]; | |
|   } | |
| 
 | |
|   private static function parseAsHCard($item, $http, $authorURL=false) { | |
|     $data = [ | |
|       'type' => 'card', | |
|       'name' => null, | |
|       'url' => null, | |
|       'photo' => null | |
|     ]; | |
| 
 | |
|     $properties = ['url','name','photo']; | |
|     foreach($properties as $p) { | |
|       if($p == 'url' && $authorURL) { | |
|         // If there is a matching author URL, use that one | |
|         $found = false; | |
|         foreach($item['properties']['url'] as $url) { | |
|           if(self::isURL($url)) { | |
|             $url = self::normalize_url($url); | |
|             if($url == $authorURL) { | |
|               $data['url'] = $url; | |
|               $found = true; | |
|             } | |
|           } | |
|         } | |
|         if(!$found && self::isURL($item['properties']['url'][0])) { | |
|           $data['url'] = $item['properties']['url'][0]; | |
|         } | |
|       } else if(($v = self::getPlaintext($item, $p)) !== null) { | |
|         // Make sure the URL property is actually a URL | |
|         if($p == 'url' || $p == 'photo') { | |
|           if(self::isURL($v)) | |
|             $data[$p] = $v; | |
|         } else { | |
|           $data[$p] = $v; | |
|         } | |
|       } | |
|     } | |
| 
 | |
|     // If no URL property was found, use the $authorURL provided | |
|     if(!$data['url']) | |
|       $data['url'] = $authorURL; | |
| 
 | |
|     $response = [ | |
|       'data' => $data | |
|     ]; | |
| 
 | |
|     return $response; | |
|   } | |
| 
 | |
|   private static function findAuthor($mf2, $item, $http) { | |
|     $author = [ | |
|       'type' => 'card', | |
|       'name' => null, | |
|       'url' => null, | |
|       'photo' => null | |
|     ]; | |
| 
 | |
|     // Author Discovery | |
|     // http://indiewebcamp.com/authorship | |
|  | |
|     $authorPage = false; | |
|     if(array_key_exists('author', $item['properties'])) { | |
| 
 | |
|       // Check if any of the values of the author property are an h-card | |
|       foreach($item['properties']['author'] as $a) { | |
|         if(self::isHCard($a)) { | |
|           // 5.1 "if it has an h-card, use it, exit." | |
|           return self::parseAsHCard($a, $http)['data']; | |
|         } elseif(is_string($a)) { | |
|           if(self::isURL($a)) { | |
|             // 5.2 "otherwise if author property is an http(s) URL, let the author-page have that URL" | |
|             $authorPage = $a; | |
|           } else { | |
|             // 5.3 "otherwise use the author property as the author name, exit" | |
|             // We can only set the name, no h-card or URL was found | |
|             $author['name'] = self::getPlaintext($item, 'author'); | |
|             return $author; | |
|           } | |
|         } else { | |
|           // This case is only hit when the author property is an mf2 object that is not an h-card | |
|           $author['name'] = self::getPlaintext($item, 'author'); | |
|           return $author; | |
|         } | |
|       } | |
| 
 | |
|     } | |
| 
 | |
|     // 6. "if no author page was found" ... check for rel-author link | |
|     if(!$authorPage) { | |
|       if(isset($mf2['rels']) && isset($mf2['rels']['author'])) | |
|         $authorPage = $mf2['rels']['author'][0]; | |
|     } | |
| 
 | |
|     // 7. "if there is an author-page URL" ... | |
|     if($authorPage) { | |
| 
 | |
|       // 7.1 "get the author-page from that URL and parse it for microformats2" | |
|       $authorPageContents = self::getURL($authorPage, $http); | |
| 
 | |
|       if($authorPageContents) { | |
|         foreach($authorPageContents['items'] as $i) { | |
|           if(self::isHCard($i)) { | |
| 
 | |
|             // 7.2 "if author-page has 1+ h-card with url == uid == author-page's URL, then use first such h-card, exit." | |
|             if(array_key_exists('url', $i['properties']) | |
|               and in_array($authorPage, $i['properties']['url']) | |
|               and array_key_exists('uid', $i['properties']) | |
|               and in_array($authorPage, $i['properties']['uid']) | |
|             ) {  | |
|               return self::parseAsHCard($i, $http, $authorPage)['data']; | |
|             } | |
| 
 | |
|             // 7.3 "else if author-page has 1+ h-card with url property which matches the href of a rel-me link on the author-page" | |
|             $relMeLinks = (isset($authorPageContents['rels']) && isset($authorPageContents['rels']['me'])) ? $authorPageContents['rels']['me'] : []; | |
|             if(count($relMeLinks) > 0 | |
|               and array_key_exists('url', $i['properties']) | |
|               and count(array_intersect($i['properties']['url'], $relMeLinks)) > 0 | |
|             ) { | |
|               return self::parseAsHCard($i, $http, $authorPage)['data']; | |
|             } | |
| 
 | |
|           } | |
|         } | |
|       } | |
| 
 | |
|       // 7.4 "if the h-entry's page has 1+ h-card with url == author-page URL, use first such h-card, exit." | |
|       foreach($mf2['items'] as $i) { | |
|         if(self::isHCard($i)) { | |
| 
 | |
|           if(array_key_exists('url', $i['properties']) | |
|             and in_array($authorPage, $i['properties']['url']) | |
|           ) { | |
|             return self::parseAsHCard($i, $http)['data']; | |
|           } | |
| 
 | |
|         } | |
|       } | |
| 
 | |
|     } | |
| 
 | |
|     if(!$author['name'] && !$author['photo'] && !$author['url']) | |
|       return null; | |
| 
 | |
|     return $author; | |
|   } | |
| 
 | |
|   private static function sanitizeHTML($html) { | |
|     $config = HTMLPurifier_Config::createDefault(); | |
|     $config->set('Cache.DefinitionImpl', null); | |
|     $config->set('HTML.AllowedElements', [ | |
|       'a', | |
|       'abbr', | |
|       'b', | |
|       'code', | |
|       'del', | |
|       'em', | |
|       'i', | |
|       'img', | |
|       'q', | |
|       'strike', | |
|       'strong', | |
|       'time', | |
|       'blockquote', | |
|       'pre', | |
|       'p', | |
|       'h1', | |
|       'h2', | |
|       'h3', | |
|       'h4', | |
|       'h5', | |
|       'h6', | |
|       'ul', | |
|       'li', | |
|       'ol' | |
|     ]); | |
|     $def = $config->getHTMLDefinition(true); | |
|     $def->addElement( | |
|       'time', | |
|       'Inline', | |
|       'Inline', | |
|       'Common', | |
|       [ | |
|         'datetime' => 'Text' | |
|       ] | |
|     ); | |
|     // Override the allowed classes to only support Microformats2 classes | |
|     $def->manager->attrTypes->set('Class', new HTMLPurifier_AttrDef_HTML_Microformats2()); | |
|     $purifier = new HTMLPurifier($config); | |
|     $sanitized = $purifier->purify($html); | |
|     $sanitized = str_replace("
","\r",$sanitized); | |
|     return $sanitized; | |
|   } | |
| 
 | |
|   private static function hasNumericKeys(array $arr) { | |
|     foreach($arr as $key=>$val)  | |
|       if (is_numeric($key))  | |
|         return true; | |
|     return false; | |
|   } | |
| 
 | |
|   private static function isMicroformat($mf) { | |
|     return is_array($mf)  | |
|       and !self::hasNumericKeys($mf)  | |
|       and !empty($mf['type'])  | |
|       and isset($mf['properties']); | |
|   } | |
| 
 | |
|   private static function isHCard($mf) { | |
|     return is_array($mf) | |
|       and !empty($mf['type']) | |
|       and is_array($mf['type']) | |
|       and in_array('h-card', $mf['type']); | |
|   } | |
| 
 | |
|   private static function isURL($string) { | |
|     return preg_match('/^https?:\/\/.+\..+$/', $string); | |
|   } | |
| 
 | |
|   // Given an array of microformats properties and a key name, return the plaintext value | |
|   // at that property | |
|   // e.g. | |
|   // {"properties":{"published":["foo"]}} results in "foo" | |
|   private static function getPlaintext($mf2, $k, $fallback=null) { | |
|     if(!empty($mf2['properties'][$k]) and is_array($mf2['properties'][$k])) { | |
|       // $mf2['properties'][$v] will always be an array since the input was from the mf2 parser | |
|       $value = $mf2['properties'][$k][0]; | |
|       if(is_string($value)) { | |
|         return $value; | |
|       } elseif(self::isMicroformat($value) && array_key_exists('value', $value)) { | |
|         return $value['value']; | |
|       } | |
|     } | |
|     return $fallback; | |
|   } | |
| 
 | |
|   private static function getURL($url, $http) { | |
|     if(!$url) return null; | |
|     // TODO: consider adding caching here | |
|     $result = $http->get($url); | |
|     if($result['error'] || !$result['body']) { | |
|       return null; | |
|     } | |
|     return \mf2\Parse($result['body'], $url); | |
|   } | |
| 
 | |
|   private static function normalize_url($url) { | |
|     $parts = parse_url($url); | |
|     if(empty($parts['path'])) | |
|       $parts['path'] = '/'; | |
|     $parts['host'] = strtolower($parts['host']); | |
|     return self::build_url($parts); | |
|   } | |
| 
 | |
|   private static function build_url($parsed_url) { | |
|     $scheme   = isset($parsed_url['scheme']) ? $parsed_url['scheme'] . '://' : ''; | |
|     $host     = isset($parsed_url['host']) ? $parsed_url['host'] : ''; | |
|     $port     = isset($parsed_url['port']) ? ':' . $parsed_url['port'] : ''; | |
|     $user     = isset($parsed_url['user']) ? $parsed_url['user'] : ''; | |
|     $pass     = isset($parsed_url['pass']) ? ':' . $parsed_url['pass']  : ''; | |
|     $pass     = ($user || $pass) ? "$pass@" : ''; | |
|     $path     = isset($parsed_url['path']) ? $parsed_url['path'] : ''; | |
|     $query    = isset($parsed_url['query']) ? '?' . $parsed_url['query'] : ''; | |
|     $fragment = isset($parsed_url['fragment']) ? '#' . $parsed_url['fragment'] : ''; | |
|     return "$scheme$user$pass$host$port$path$query$fragment"; | |
|   } | |
| }
 |