mod/parse_url.php

   1 <?php
   2 /* To-Do
   3 https://developers.google.com/+/plugins/snippet/
   4
   5 <meta itemprop="name" content="Toller Titel">
   6 <meta itemprop="description" content="Eine tolle Beschreibung">
   7 <meta itemprop="image" content="http://maple.libertreeproject.org/images/tree-icon.png">
   8
   9 <body itemscope itemtype="http://schema.org/Product">
  10   <h1 itemprop="name">Shiny Trinket</h1>
  11   <img itemprop="image" src="{image-url}" />
  12   <p itemprop="description">Shiny trinkets are shiny.</p>
  13 </body>
  14 */
  15
  16 if(!function_exists('deletenode')) {
  17         function deletenode(&$doc, $node)
  18         {
  19                 $xpath = new DomXPath($doc);
  20                 $list = $xpath->query("//".$node);
  21                 foreach ($list as $child)
  22                         $child->parentNode->removeChild($child);
  23         }
  24 }
  25
  26 function completeurl($url, $scheme) {
  27         $urlarr = parse_url($url);
  28
  29         if (isset($urlarr["scheme"]))
  30                 return($url);
  31
  32         $schemearr = parse_url($scheme);
  33
  34         $complete = $schemearr["scheme"]."://".$schemearr["host"];
  35
  36         if (@$schemearr["port"] != "")
  37                 $complete .= ":".$schemearr["port"];
  38
  39                 if(strpos($urlarr['path'],'/') !== 0)
  40                         $complete .= '/';
  41
  42         $complete .= $urlarr["path"];
  43
  44         if (@$urlarr["query"] != "")
  45                 $complete .= "?".$urlarr["query"];
  46
  47         if (@$urlarr["fragment"] != "")
  48                 $complete .= "#".$urlarr["fragment"];
  49
  50         return($complete);
  51 }
  52
  53 function parseurl_getsiteinfo($url, $no_guessing = false) {
  54         $siteinfo = array();
  55
  56         $siteinfo["type"] = "link";
  57
  58         $ch = curl_init();
  59         curl_setopt($ch, CURLOPT_URL, $url);
  60         curl_setopt($ch, CURLOPT_HEADER, 1);
  61         curl_setopt($ch, CURLOPT_NOBODY, 0);
  62         curl_setopt($ch, CURLOPT_TIMEOUT, 3);
  63         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  64         //curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
  65         curl_setopt($ch,CURLOPT_USERAGENT,' Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0');
  66
  67         $header = curl_exec($ch);
  68         $curl_info = @curl_getinfo($ch);
  69         $http_code = $curl_info['http_code'];
  70         curl_close($ch);
  71
  72         if ((($curl_info['http_code'] == "301") OR ($curl_info['http_code'] == "302"))
  73                 AND (($curl_info['redirect_url'] != "") OR ($curl_info['location'] != ""))) {
  74                 if ($curl_info['redirect_url'] != "")
  75                         $siteinfo = parseurl_getsiteinfo($curl_info['redirect_url']);
  76                 else
  77                         $siteinfo = parseurl_getsiteinfo($curl_info['location']);
  78                 return($siteinfo);
  79         }
  80
  81         require_once("include/oembed.php");
  82
  83         $oembed_data = oembed_fetch_url($url);
  84
  85         if ($oembed_data->type != "error")
  86                 $siteinfo["type"] = $oembed_data->type;
  87
  88         if ($oembed_data->type == "link") {
  89                 if (isset($oembed_data->title))
  90                         $siteinfo["title"] = $oembed_data->title;
  91                 if (isset($oembed_data->description))
  92                         $siteinfo["text"] = trim($oembed_data->description);
  93                 if (isset($oembed_data->thumbnail_url))
  94                         $siteinfo["image"] = $oembed_data->thumbnail_url;
  95         }
  96
  97         // Fetch the first mentioned charset. Can be in body or header
  98         if (preg_match('/charset=(.*?)['."'".'"\s\n]/', $header, $matches))
  99                 $charset = trim(array_pop($matches));
 100         else
 101                 $charset = "utf-8";
 102
 103         $pos = strpos($header, "\r\n\r\n");
 104
 105         if ($pos)
 106                 $body = trim(substr($header, $pos));
 107         else
 108                 $body = $header;
 109
 110         $body = mb_convert_encoding($body, "UTF-8", $charset);
 111         $body = mb_convert_encoding($body, 'HTML-ENTITIES', "UTF-8");
 112
 113         $doc = new DOMDocument();
 114         @$doc->loadHTML($body);
 115
 116         deletenode($doc, 'style');
 117         deletenode($doc, 'script');
 118         deletenode($doc, 'option');
 119         deletenode($doc, 'h1');
 120         deletenode($doc, 'h2');
 121         deletenode($doc, 'h3');
 122         deletenode($doc, 'h4');
 123         deletenode($doc, 'h5');
 124         deletenode($doc, 'h6');
 125         deletenode($doc, 'ol');
 126         deletenode($doc, 'ul');
 127
 128         $xpath = new DomXPath($doc);
 129
 130         $list = $xpath->query("//meta[@content]");
 131         foreach ($list as $node) {
 132                 $attr = array();
 133                 if ($node->attributes->length)
 134                         foreach ($node->attributes as $attribute)
 135                                 $attr[$attribute->name] = $attribute->value;
 136
 137                 if (@$attr["http-equiv"] == 'refresh') {
 138                         $path = $attr["content"];
 139                         $pathinfo = explode(";", $path);
 140                         $content = "";
 141                         foreach ($pathinfo AS $value) {
 142                                 if (substr(strtolower($value), 0, 4) == "url=")
 143                                         $content = substr($value, 4);
 144                         }
 145                         if ($content != "") {
 146                                 $siteinfo = parseurl_getsiteinfo($content);
 147                                 return($siteinfo);
 148                         }
 149                 }
 150         }
 151
 152         //$list = $xpath->query("head/title");
 153         $list = $xpath->query("//title");
 154         foreach ($list as $node)
 155                 $siteinfo["title"] =  html_entity_decode($node->nodeValue, ENT_QUOTES, "UTF-8");
 156
 157         //$list = $xpath->query("head/meta[@name]");
 158         $list = $xpath->query("//meta[@name]");
 159         foreach ($list as $node) {
 160                 $attr = array();
 161                 if ($node->attributes->length)
 162                         foreach ($node->attributes as $attribute)
 163                                 $attr[$attribute->name] = $attribute->value;
 164
 165                 $attr["content"] = trim(html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8"));
 166
 167                 switch (strtolower($attr["name"])) {
 168                         case "fulltitle":
 169                                 $siteinfo["title"] = $attr["content"];
 170                                 break;
 171                         case "description":
 172                                 $siteinfo["text"] = $attr["content"];
 173                                 break;
 174                         case "twitter:image":
 175                                 $siteinfo["image"] = $attr["content"];
 176                                 break;
 177                         case "twitter:card":
 178                                 if ($siteinfo["type"] == "")
 179                                         $siteinfo["type"] = $attr["content"];
 180                                 break;
 181                         case "twitter:description":
 182                                 $siteinfo["text"] = $attr["content"];
 183                                 break;
 184                         case "twitter:title":
 185                                 $siteinfo["title"] = $attr["content"];
 186                                 break;
 187                         case "dc.title":
 188                                 $siteinfo["title"] = $attr["content"];
 189                                 break;
 190                         case "dc.description":
 191                                 $siteinfo["text"] = $attr["content"];
 192                                 break;
 193                 }
 194                 if ($siteinfo["type"] == "summary")
 195                         $siteinfo["type"] = "link";
 196         }
 197
 198         //$list = $xpath->query("head/meta[@property]");
 199         $list = $xpath->query("//meta[@property]");
 200         foreach ($list as $node) {
 201                 $attr = array();
 202                 if ($node->attributes->length)
 203                         foreach ($node->attributes as $attribute)
 204                                 $attr[$attribute->name] = $attribute->value;
 205
 206                 $attr["content"] = trim(html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8"));
 207
 208                 switch (strtolower($attr["property"])) {
 209                         case "og:image":
 210                                 $siteinfo["image"] = $attr["content"];
 211                                 break;
 212                         case "og:title":
 213                                 $siteinfo["title"] = $attr["content"];
 214                                 break;
 215                         case "og:description":
 216                                 $siteinfo["text"] = $attr["content"];
 217                                 break;
 218                 }
 219         }
 220
 221         if ((@$siteinfo["image"] == "") AND !$no_guessing) {
 222             $list = $xpath->query("//img[@src]");
 223             foreach ($list as $node) {
 224                 $attr = array();
 225                 if ($node->attributes->length)
 226                     foreach ($node->attributes as $attribute)
 227                         $attr[$attribute->name] = $attribute->value;
 228
 229                         $src = completeurl($attr["src"], $url);
 230                         $photodata = @getimagesize($src);
 231
 232                         if (($photodata) && ($photodata[0] > 150) and ($photodata[1] > 150)) {
 233                                 if ($photodata[0] > 300) {
 234                                         $photodata[1] = round($photodata[1] * (300 / $photodata[0]));
 235                                         $photodata[0] = 300;
 236                                 }
 237                                 if ($photodata[1] > 300) {
 238                                         $photodata[0] = round($photodata[0] * (300 / $photodata[1]));
 239                                         $photodata[1] = 300;
 240                                 }
 241                                 $siteinfo["images"][] = array("src"=>$src,
 242                                                                 "width"=>$photodata[0],
 243                                                                 "height"=>$photodata[1]);
 244                         }
 245
 246                 }
 247     } else {
 248                 $src = completeurl($siteinfo["image"], $url);
 249
 250                 unset($siteinfo["image"]);
 251
 252                 $photodata = @getimagesize($src);
 253
 254                 if (($photodata) && ($photodata[0] > 10) and ($photodata[1] > 10))
 255                         $siteinfo["images"][] = array("src"=>$src,
 256                                                         "width"=>$photodata[0],
 257                                                         "height"=>$photodata[1]);
 258         }
 259
 260         if ((@$siteinfo["text"] == "") AND (@$siteinfo["title"] != "") AND !$no_guessing) {
 261                 $text = "";
 262
 263                 $list = $xpath->query("//div[@class='article']");
 264                 foreach ($list as $node)
 265                         if (strlen($node->nodeValue) > 40)
 266                                 $text .= " ".trim($node->nodeValue);
 267
 268                 if ($text == "") {
 269                         $list = $xpath->query("//div[@class='content']");
 270                         foreach ($list as $node)
 271                                 if (strlen($node->nodeValue) > 40)
 272                                         $text .= " ".trim($node->nodeValue);
 273                 }
 274
 275                 // If none text was found then take the paragraph content
 276                 if ($text == "") {
 277                         $list = $xpath->query("//p");
 278                         foreach ($list as $node)
 279                                 if (strlen($node->nodeValue) > 40)
 280                                         $text .= " ".trim($node->nodeValue);
 281                 }
 282
 283                 if ($text != "") {
 284                         $text = trim(str_replace(array("\n", "\r"), array(" ", " "), $text));
 285
 286                         while (strpos($text, "  "))
 287                                 $text = trim(str_replace("  ", " ", $text));
 288
 289                         $siteinfo["text"] = trim(html_entity_decode(substr($text,0,350), ENT_QUOTES, "UTF-8").'...');
 290                 }
 291         }
 292
 293         return($siteinfo);
 294 }
 295
 296 function arr_add_hashes(&$item,$k) {
 297         $item = '#' . $item;
 298 }
 299
 300 function parse_url_content(&$a) {
 301
 302         $text = null;
 303         $str_tags = '';
 304
 305         $textmode = false;
 306
 307         if(local_user() && (! feature_enabled(local_user(),'richtext')))
 308                 $textmode = true;
 309
 310         //if($textmode)
 311         $br = (($textmode) ? "\n" : '<br />');
 312
 313         if(x($_GET,'binurl'))
 314                 $url = trim(hex2bin($_GET['binurl']));
 315         else
 316                 $url = trim($_GET['url']);
 317
 318         if($_GET['title'])
 319                 $title = strip_tags(trim($_GET['title']));
 320
 321         if($_GET['description'])
 322                 $text = strip_tags(trim($_GET['description']));
 323
 324         if($_GET['tags']) {
 325                 $arr_tags = str_getcsv($_GET['tags']);
 326                 if(count($arr_tags)) {
 327                         array_walk($arr_tags,'arr_add_hashes');
 328                         $str_tags = $br . implode(' ',$arr_tags) . $br;
 329                 }
 330         }
 331
 332         logger('parse_url: ' . $url);
 333
 334         if($textmode)
 335                 $template = '[bookmark=%s]%s[/bookmark]%s';
 336         else
 337                 $template = "<a class=\"bookmark\" href=\"%s\" >%s</a>%s";
 338
 339         $arr = array('url' => $url, 'text' => '');
 340
 341         call_hooks('parse_link', $arr);
 342
 343         if(strlen($arr['text'])) {
 344                 echo $arr['text'];
 345                 killme();
 346         }
 347
 348
 349         if($url && $title && $text) {
 350
 351                 $title = str_replace(array("\r","\n"),array('',''),$title);
 352
 353                 if($textmode)
 354                         $text = '[quote]' . trim($text) . '[/quote]' . $br;
 355                 else {
 356                         $text = '<blockquote>' . htmlspecialchars(trim($text)) . '</blockquote><br />';
 357                         $title = htmlspecialchars($title);
 358                 }
 359
 360                 $result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
 361
 362                 logger('parse_url (unparsed): returns: ' . $result);
 363
 364                 echo $result;
 365                 killme();
 366         }
 367
 368         $siteinfo = parseurl_getsiteinfo($url);
 369
 370         $sitedata = "";
 371
 372         if($siteinfo["title"] == "") {
 373                 $sitedata .= sprintf($template,$url,$url,'') . $str_tags;
 374                 killme();
 375         } else {
 376                 $text = $siteinfo["text"];
 377                 $title = $siteinfo["title"];
 378         }
 379
 380         $image = "";
 381
 382         if(sizeof($siteinfo["images"]) > 0){
 383                 /* Execute below code only if image is present in siteinfo */
 384
 385                 $total_images = 0;
 386                 $max_images = get_config('system','max_bookmark_images');
 387                 if($max_images === false)
 388                         $max_images = 2;
 389                 else
 390                         $max_images = intval($max_images);
 391
 392                 foreach ($siteinfo["images"] as $imagedata) {
 393                         if($textmode)
 394                                 $image .= '[img='.$imagedata["width"].'x'.$imagedata["height"].']'.$imagedata["src"].'[/img]' . "\n";
 395                         else
 396                                 $image .= '<img height="'.$imagedata["height"].'" width="'.$imagedata["width"].'" src="'.$imagedata["src"].'" alt="photo" /><br />';
 397                         $total_images ++;
 398                         if($max_images && $max_images >= $total_images)
 399                                 break;
 400                 }
 401         }
 402
 403         if(strlen($text)) {
 404                 if($textmode)
 405                         $text = '[quote]'.trim($text).'[/quote]';
 406                 else
 407                         $text = '<blockquote>'.htmlspecialchars(trim($text)).'</blockquote>';
 408         }
 409
 410         if($image)
 411                 $text = $br.$br.$image.$text;
 412         else
 413                 $text = $br.$text;
 414
 415         $title = str_replace(array("\r","\n"),array('',''),$title);
 416
 417         $result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
 418
 419         logger('parse_url: returns: ' . $result);
 420
 421         $sitedata .=  trim($result);
 422
 423         if (($siteinfo["type"] == "video") AND ($url != ""))
 424                 echo "[video]".$url."[/video]";
 425         elseif (($siteinfo["type"] != "photo"))
 426                 echo "[class=type-link]".$sitedata."[/class]";
 427         else
 428                 echo "[class=type-photo]".$title.$br.$image."[/class]";
 429
 430         killme();
 431 }