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PHP Cross Reference of MyBB 1.8.38 |
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1 <?php 2 /** 3 * MyBB 1.8 4 * Copyright 2014 MyBB Group, All Rights Reserved 5 * 6 * Website: http://www.mybb.com 7 * License: http://www.mybb.com/about/license 8 * 9 */ 10 11 class FeedGenerator 12 { 13 /** 14 * The type of feed to generate. 15 * 16 * @var string 17 */ 18 public $feed_format = 'rss2.0'; 19 20 /** 21 * The feed to output. 22 * 23 * @var string 24 */ 25 public $feed = ""; 26 27 /** 28 * Array of all of the items 29 * 30 * @var array 31 */ 32 public $items = array(); 33 34 /** 35 * Array of the channel information. 36 * 37 * @var array 38 */ 39 public $channel = array(); 40 41 /** 42 * Set the type of feed to be used. 43 * 44 * @param string $feed_format The feed type. 45 */ 46 function set_feed_format($feed_format) 47 { 48 if($feed_format == 'json') 49 { 50 $this->feed_format = 'json'; 51 } 52 elseif($feed_format == 'atom1.0') 53 { 54 $this->feed_format = 'atom1.0'; 55 } 56 else 57 { 58 $this->feed_format = 'rss2.0'; 59 } 60 } 61 62 /** 63 * Sets the channel information for the RSS feed. 64 * 65 * @param array $channel The channel information 66 */ 67 function set_channel($channel) 68 { 69 $this->channel = $channel; 70 } 71 72 /** 73 * Adds an item to the RSS feed. 74 * 75 * @param array $item The item. 76 */ 77 function add_item($item) 78 { 79 $this->items[] = $item; 80 } 81 82 /** 83 * Generate the feed. 84 * 85 */ 86 function generate_feed() 87 { 88 global $lang; 89 90 // First, add the feed metadata. 91 switch($this->feed_format) 92 { 93 // Ouput JSON formatted feed. 94 case "json": 95 $this->feed .= "{\n\t\"version\": ".json_encode('https://jsonfeed.org/version/1').",\n"; 96 $this->feed .= "\t\"title\": \"".$this->channel['title']."\",\n"; 97 $this->feed .= "\t\"home_page_url\": ".json_encode($this->channel['link']).",\n"; 98 $this->feed .= "\t\"feed_url\": ".json_encode($this->channel['link']."syndication.php").",\n"; 99 $this->feed .= "\t\"description\": ".json_encode($this->channel['description']).",\n"; 100 $this->feed .= "\t\"items\": [\n"; 101 $serial = 0; 102 break; 103 // Ouput Atom 1.0 formatted feed. 104 case "atom1.0": 105 $this->channel['date'] = gmdate("Y-m-d\TH:i:s\Z", $this->channel['date']); 106 $this->feed .= "<?xml version=\"1.0\" encoding=\"{$lang->settings['charset']}\"?>\n"; 107 $this->feed .= "<feed xmlns=\"http://www.w3.org/2005/Atom\" xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n"; 108 $this->feed .= "\t<title type=\"html\"><![CDATA[".$this->sanitize_content($this->channel['title'])."]]></title>\n"; 109 $this->feed .= "\t<subtitle type=\"html\"><![CDATA[".$this->sanitize_content($this->channel['description'])."]]></subtitle>\n"; 110 $this->feed .= "\t<link rel=\"self\" href=\"{$this->channel['link']}syndication.php\"/>\n"; 111 $this->feed .= "\t<id>{$this->channel['link']}</id>\n"; 112 $this->feed .= "\t<link rel=\"alternate\" type=\"text/html\" href=\"{$this->channel['link']}\"/>\n"; 113 $this->feed .= "\t<updated>{$this->channel['date']}</updated>\n"; 114 $this->feed .= "\t<generator uri=\"https://mybb.com\">MyBB</generator>\n"; 115 break; 116 // The default is the RSS 2.0 format. 117 default: 118 $this->channel['date'] = gmdate("D, d M Y H:i:s O", $this->channel['date']); 119 $this->feed .= "<?xml version=\"1.0\" encoding=\"{$lang->settings['charset']}\"?>\n"; 120 $this->feed .= "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\" xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n"; 121 $this->feed .= "\t<channel>\n"; 122 $this->feed .= "\t\t<title><![CDATA[".$this->sanitize_content($this->channel['title'])."]]></title>\n"; 123 $this->feed .= "\t\t<link>".$this->channel['link']."</link>\n"; 124 $this->feed .= "\t\t<description><![CDATA[".$this->sanitize_content($this->channel['description'])."]]></description>\n"; 125 $this->feed .= "\t\t<pubDate>".$this->channel['date']."</pubDate>\n"; 126 $this->feed .= "\t\t<generator>MyBB</generator>\n"; 127 } 128 129 // Now loop through all of the items and add them to the feed. 130 foreach($this->items as $item) 131 { 132 if(!$item['date']) 133 { 134 $item['date'] = TIME_NOW; 135 } 136 switch($this->feed_format) 137 { 138 // Output JSON formatted feed. 139 case "json": 140 ++$serial; 141 $end = $serial < count($this->items) ? "," : ""; 142 $item_id = explode('tid=', $item['link']); 143 if(empty($item['updated'])) 144 { 145 $item['updated'] = $item['date']; 146 } 147 $this->feed .= "\t\t{\n"; 148 $this->feed .= "\t\t\t\"id\": \"".end($item_id)."\",\n"; 149 $this->feed .= "\t\t\t\"url\": ".json_encode($item['link']).",\n"; 150 $this->feed .= "\t\t\t\"title\": ".json_encode($item['title']).",\n"; 151 if(!empty($item['author'])) 152 { 153 $this->feed .= "\t\t\t\"author\": {\n\t\t\t\t\"name\": ".json_encode($item['author']['name']).",\n"; 154 $this->feed .= "\t\t\t\t\"url\": ".json_encode($this->channel['link']."member.php?action=profile&uid=".$item['author']['uid'])."\n"; 155 $this->feed .= "\t\t\t},\n"; 156 } 157 $this->feed .= "\t\t\t\"content_html\": ".json_encode($item['description']).",\n"; 158 $this->feed .= "\t\t\t\"date_published\": \"".date('c', $item['date'])."\",\n"; 159 $this->feed .= "\t\t\t\"date_modified \": \"".date('c', $item['updated'])."\"\n"; 160 $this->feed .= "\t\t}".$end."\n"; 161 break; 162 // Output Atom 1.0 formatted feed. 163 case "atom1.0": 164 $item['date'] = date("Y-m-d\TH:i:s\Z", $item['date']); 165 $this->feed .= "\t<entry xmlns=\"http://www.w3.org/2005/Atom\">\n"; 166 if(!empty($item['author'])) 167 { 168 $author = "<a href=\"".$this->channel['link']."member.php?action=profile&uid=".$item['author']['uid']."\">".$item['author']['name']."</a>"; 169 $this->feed .= "\t\t<author>\n"; 170 $this->feed .= "\t\t\t<name type=\"html\" xml:space=\"preserve\"><![CDATA[".$this->sanitize_content($author)."]]></name>\n"; 171 $this->feed .= "\t\t</author>\n"; 172 } 173 $this->feed .= "\t\t<published>{$item['date']}</published>\n"; 174 if(empty($item['updated'])) 175 { 176 $item['updated'] = $item['date']; 177 } 178 else 179 { 180 $item['updated'] = date("Y-m-d\TH:i:s\Z", $item['updated']); 181 } 182 $this->feed .= "\t\t<updated>{$item['updated']}</updated>\n"; 183 $this->feed .= "\t\t<link rel=\"alternate\" type=\"text/html\" href=\"{$item['link']}\" />\n"; 184 $this->feed .= "\t\t<id>{$item['link']}</id>\n"; 185 $this->feed .= "\t\t<title xml:space=\"preserve\"><![CDATA[".$this->sanitize_content($item['title'])."]]></title>\n"; 186 $this->feed .= "\t\t<content type=\"html\" xml:space=\"preserve\" xml:base=\"{$item['link']}\"><![CDATA[".$this->sanitize_content($item['description'])."]]></content>\n"; 187 $this->feed .= "\t\t<draft xmlns=\"http://purl.org/atom-blog/ns#\">false</draft>\n"; 188 $this->feed .= "\t</entry>\n"; 189 break; 190 191 // The default is the RSS 2.0 format. 192 default: 193 $item['date'] = date("D, d M Y H:i:s O", $item['date']); 194 $this->feed .= "\t\t<item>\n"; 195 $this->feed .= "\t\t\t<title><![CDATA[".$this->sanitize_content($item['title'])."]]></title>\n"; 196 $this->feed .= "\t\t\t<link>".$item['link']."</link>\n"; 197 $this->feed .= "\t\t\t<pubDate>".$item['date']."</pubDate>\n"; 198 if(!empty($item['author'])) 199 { 200 $author = "<a href=\"".$this->channel['link']."member.php?action=profile&uid=".$item['author']['uid']."\">".$item['author']['name']."</a>"; 201 $this->feed .= "\t\t\t<dc:creator><![CDATA[".$this->sanitize_content($author)."]]></dc:creator>\n"; 202 } 203 $this->feed .= "\t\t\t<guid isPermaLink=\"false\">".$item['link']."</guid>\n"; 204 $this->feed .= "\t\t\t<description><![CDATA[".$item['description']."]]></description>\n"; 205 $this->feed .= "\t\t\t<content:encoded><![CDATA[".$item['description']."]]></content:encoded>\n"; 206 $this->feed .= "\t\t</item>\n"; 207 break; 208 } 209 } 210 211 // Now, neatly end the feed. 212 switch($this->feed_format) 213 { 214 case "json": 215 $this->feed .= "\t]\n}"; 216 break; 217 case "atom1.0": 218 $this->feed .= "</feed>"; 219 break; 220 default: 221 $this->feed .= "\t</channel>\n"; 222 $this->feed .= "</rss>"; 223 } 224 } 225 226 /** 227 * Sanitize content suitable for RSS feeds. 228 * 229 * @param string $string The string we wish to sanitize. 230 * @return string The cleaned string. 231 */ 232 function sanitize_content($content) 233 { 234 $content = preg_replace("#&[^\s]([^\#])(?![a-z1-4]{1,10});#i", "&$1", $content); 235 $content = str_replace("]]>", "]]]]><![CDATA[>", $content); 236 237 return $content; 238 } 239 240 /** 241 * Output the feed. 242 */ 243 function output_feed() 244 { 245 global $lang; 246 // Send an appropriate header to the browser. 247 switch($this->feed_format) 248 { 249 case "json": 250 header("Content-Type: application/json; charset=\"{$lang->settings['charset']}\""); 251 break; 252 case "atom1.0": 253 header("Content-Type: application/atom+xml; charset=\"{$lang->settings['charset']}\""); 254 break; 255 default: 256 header("Content-Type: text/xml; charset=\"{$lang->settings['charset']}\""); 257 } 258 259 // If the feed hasn't been generated, do so. 260 if($this->feed) 261 { 262 echo $this->feed; 263 } 264 else 265 { 266 $this->generate_feed(); 267 echo $this->feed; 268 } 269 } 270 }
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