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, $do_oembed = true, $count = 1) {
  54         require_once("include/network.php");
  55
  56         $a = get_app();
  57
  58         $siteinfo = array();
  59
  60         if ($count > 10) {
  61                 logger("parseurl_getsiteinfo: Endless loop detected for ".$url, LOGGER_DEBUG);
  62                 return($siteinfo);
  63         }
  64
  65         $url = trim($url, "'");
  66         $url = trim($url, '"');
  67
  68         $url = original_url($url);
  69
  70         $siteinfo["url"] = $url;
  71         $siteinfo["type"] = "link";
  72
  73         $stamp1 = microtime(true);
  74
  75         $ch = curl_init();
  76         curl_setopt($ch, CURLOPT_URL, $url);
  77         curl_setopt($ch, CURLOPT_HEADER, 1);
  78         curl_setopt($ch, CURLOPT_NOBODY, 1);
  79         curl_setopt($ch, CURLOPT_TIMEOUT, 3);
  80         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  81         //curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
  82         curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
  83
  84         $header = curl_exec($ch);
  85         $curl_info = @curl_getinfo($ch);
  86         $http_code = $curl_info['http_code'];
  87         curl_close($ch);
  88
  89         $a->save_timestamp($stamp1, "network");
  90
  91         if ((($curl_info['http_code'] == "301") OR ($curl_info['http_code'] == "302") OR ($curl_info['http_code'] == "303") OR ($curl_info['http_code'] == "307"))
  92                 AND (($curl_info['redirect_url'] != "") OR ($curl_info['location'] != ""))) {
  93                 if ($curl_info['redirect_url'] != "")
  94                         $siteinfo = parseurl_getsiteinfo($curl_info['redirect_url'], $no_guessing, $do_oembed, ++$count);
  95                 else
  96                         $siteinfo = parseurl_getsiteinfo($curl_info['location'], $no_guessing, $do_oembed, ++$count);
  97                 return($siteinfo);
  98         }
  99
 100         // if the file is too large then exit
 101         if ($curl_info["download_content_length"] > 1000000)
 102                 return($siteinfo);
 103
 104         // if it isn't a HTML file then exit
 105         if (($curl_info["content_type"] != "") AND !strstr(strtolower($curl_info["content_type"]),"html"))
 106                 return($siteinfo);
 107
 108         if ($do_oembed) {
 109                 require_once("include/oembed.php");
 110
 111                 $oembed_data = oembed_fetch_url($url);
 112
 113                 if ($oembed_data->type != "error")
 114                         $siteinfo["type"] = $oembed_data->type;
 115
 116                 if (($oembed_data->type == "link") AND ($siteinfo["type"] != "photo")) {
 117                         if (isset($oembed_data->title))
 118                                 $siteinfo["title"] = $oembed_data->title;
 119                         if (isset($oembed_data->description))
 120                                 $siteinfo["text"] = trim($oembed_data->description);
 121                         if (isset($oembed_data->thumbnail_url))
 122                                 $siteinfo["image"] = $oembed_data->thumbnail_url;
 123                 }
 124         }
 125
 126         $stamp1 = microtime(true);
 127
 128         // Now fetch the body as well
 129         $ch = curl_init();
 130         curl_setopt($ch, CURLOPT_URL, $url);
 131         curl_setopt($ch, CURLOPT_HEADER, 1);
 132         curl_setopt($ch, CURLOPT_NOBODY, 0);
 133         curl_setopt($ch, CURLOPT_TIMEOUT, 10);
 134         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 135         curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
 136
 137         $header = curl_exec($ch);
 138         $curl_info = @curl_getinfo($ch);
 139         $http_code = $curl_info['http_code'];
 140         curl_close($ch);
 141
 142         $a->save_timestamp($stamp1, "network");
 143
 144         // Fetch the first mentioned charset. Can be in body or header
 145         $charset = "";
 146         if (preg_match('/charset=(.*?)['."'".'"\s\n]/', $header, $matches))
 147                 $charset = trim(trim(trim(array_pop($matches)), ';,'));
 148
 149         if ($charset == "")
 150                 $charset = "utf-8";
 151
 152         $pos = strpos($header, "\r\n\r\n");
 153
 154         if ($pos)
 155                 $body = trim(substr($header, $pos));
 156         else
 157                 $body = $header;
 158
 159         if (($charset != '') AND (strtoupper($charset) != "UTF-8")) {
 160                 logger("parseurl_getsiteinfo: detected charset ".$charset, LOGGER_DEBUG);
 161                 //$body = mb_convert_encoding($body, "UTF-8", $charset);
 162                 $body = iconv($charset, "UTF-8//TRANSLIT", $body);
 163         }
 164
 165         $body = mb_convert_encoding($body, 'HTML-ENTITIES', "UTF-8");
 166
 167         $doc = new DOMDocument();
 168         @$doc->loadHTML($body);
 169
 170         deletenode($doc, 'style');
 171         deletenode($doc, 'script');
 172         deletenode($doc, 'option');
 173         deletenode($doc, 'h1');
 174         deletenode($doc, 'h2');
 175         deletenode($doc, 'h3');
 176         deletenode($doc, 'h4');
 177         deletenode($doc, 'h5');
 178         deletenode($doc, 'h6');
 179         deletenode($doc, 'ol');
 180         deletenode($doc, 'ul');
 181
 182         $xpath = new DomXPath($doc);
 183
 184         $list = $xpath->query("//meta[@content]");
 185         foreach ($list as $node) {
 186                 $attr = array();
 187                 if ($node->attributes->length)
 188                         foreach ($node->attributes as $attribute)
 189                                 $attr[$attribute->name] = $attribute->value;
 190
 191                 if (@$attr["http-equiv"] == 'refresh') {
 192                         $path = $attr["content"];
 193                         $pathinfo = explode(";", $path);
 194                         $content = "";
 195                         foreach ($pathinfo AS $value) {
 196                                 if (substr(strtolower($value), 0, 4) == "url=")
 197                                         $content = substr($value, 4);
 198                         }
 199                         if ($content != "") {
 200                                 $siteinfo = parseurl_getsiteinfo($content, $no_guessing, $do_oembed, ++$count);
 201                                 return($siteinfo);
 202                         }
 203                 }
 204         }
 205
 206         //$list = $xpath->query("head/title");
 207         $list = $xpath->query("//title");
 208         foreach ($list as $node)
 209                 $siteinfo["title"] =  html_entity_decode($node->nodeValue, ENT_QUOTES, "UTF-8");
 210
 211         //$list = $xpath->query("head/meta[@name]");
 212         $list = $xpath->query("//meta[@name]");
 213         foreach ($list as $node) {
 214                 $attr = array();
 215                 if ($node->attributes->length)
 216                         foreach ($node->attributes as $attribute)
 217                                 $attr[$attribute->name] = $attribute->value;
 218
 219                 $attr["content"] = trim(html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8"));
 220
 221                 if ($attr["content"] != "")
 222                         switch (strtolower($attr["name"])) {
 223                                 case "fulltitle":
 224                                         $siteinfo["title"] = $attr["content"];
 225                                         break;
 226                                 case "description":
 227                                         $siteinfo["text"] = $attr["content"];
 228                                         break;
 229                                 case "thumbnail":
 230                                         $siteinfo["image"] = $attr["content"];
 231                                         break;
 232                                 case "twitter:image":
 233                                         $siteinfo["image"] = $attr["content"];
 234                                         break;
 235                                 case "twitter:image:src":
 236                                         $siteinfo["image"] = $attr["content"];
 237                                         break;
 238                                 case "twitter:card":
 239                                         if (($siteinfo["type"] == "") OR ($attr["content"] == "photo"))
 240                                                 $siteinfo["type"] = $attr["content"];
 241                                         break;
 242                                 case "twitter:description":
 243                                         $siteinfo["text"] = $attr["content"];
 244                                         break;
 245                                 case "twitter:title":
 246                                         $siteinfo["title"] = $attr["content"];
 247                                         break;
 248                                 case "dc.title":
 249                                         $siteinfo["title"] = $attr["content"];
 250                                         break;
 251                                 case "dc.description":
 252                                         $siteinfo["text"] = $attr["content"];
 253                                         break;
 254                                 case "keywords":
 255                                         $keywords = explode(",", $attr["content"]);
 256                                         break;
 257                                 case "news_keywords":
 258                                         $keywords = explode(",", $attr["content"]);
 259                                         break;
 260                         }
 261                 if ($siteinfo["type"] == "summary")
 262                         $siteinfo["type"] = "link";
 263         }
 264
 265         if (isset($keywords)) {
 266                 $siteinfo["keywords"] = array();
 267                 foreach ($keywords as $keyword)
 268                         $siteinfo["keywords"][] = trim($keyword);
 269         }
 270
 271         //$list = $xpath->query("head/meta[@property]");
 272         $list = $xpath->query("//meta[@property]");
 273         foreach ($list as $node) {
 274                 $attr = array();
 275                 if ($node->attributes->length)
 276                         foreach ($node->attributes as $attribute)
 277                                 $attr[$attribute->name] = $attribute->value;
 278
 279                 $attr["content"] = trim(html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8"));
 280
 281                 if ($attr["content"] != "")
 282                         switch (strtolower($attr["property"])) {
 283                                 case "og:image":
 284                                         $siteinfo["image"] = $attr["content"];
 285                                         break;
 286                                 case "og:title":
 287                                         $siteinfo["title"] = $attr["content"];
 288                                         break;
 289                                 case "og:description":
 290                                         $siteinfo["text"] = $attr["content"];
 291                                         break;
 292                         }
 293         }
 294
 295         if ((@$siteinfo["image"] == "") AND !$no_guessing) {
 296             $list = $xpath->query("//img[@src]");
 297             foreach ($list as $node) {
 298                 $attr = array();
 299                 if ($node->attributes->length)
 300                     foreach ($node->attributes as $attribute)
 301                         $attr[$attribute->name] = $attribute->value;
 302
 303                         $src = completeurl($attr["src"], $url);
 304                         $photodata = @getimagesize($src);
 305
 306                         if (($photodata) && ($photodata[0] > 150) and ($photodata[1] > 150)) {
 307                                 if ($photodata[0] > 300) {
 308                                         $photodata[1] = round($photodata[1] * (300 / $photodata[0]));
 309                                         $photodata[0] = 300;
 310                                 }
 311                                 if ($photodata[1] > 300) {
 312                                         $photodata[0] = round($photodata[0] * (300 / $photodata[1]));
 313                                         $photodata[1] = 300;
 314                                 }
 315                                 $siteinfo["images"][] = array("src"=>$src,
 316                                                                 "width"=>$photodata[0],
 317                                                                 "height"=>$photodata[1]);
 318                         }
 319
 320                 }
 321     } else {
 322                 $src = completeurl($siteinfo["image"], $url);
 323
 324                 unset($siteinfo["image"]);
 325
 326                 $photodata = @getimagesize($src);
 327
 328                 if (($photodata) && ($photodata[0] > 10) and ($photodata[1] > 10))
 329                         $siteinfo["images"][] = array("src"=>$src,
 330                                                         "width"=>$photodata[0],
 331                                                         "height"=>$photodata[1]);
 332         }
 333
 334         if ((@$siteinfo["text"] == "") AND (@$siteinfo["title"] != "") AND !$no_guessing) {
 335                 $text = "";
 336
 337                 $list = $xpath->query("//div[@class='article']");
 338                 foreach ($list as $node)
 339                         if (strlen($node->nodeValue) > 40)
 340                                 $text .= " ".trim($node->nodeValue);
 341
 342                 if ($text == "") {
 343                         $list = $xpath->query("//div[@class='content']");
 344                         foreach ($list as $node)
 345                                 if (strlen($node->nodeValue) > 40)
 346                                         $text .= " ".trim($node->nodeValue);
 347                 }
 348
 349                 // If none text was found then take the paragraph content
 350                 if ($text == "") {
 351                         $list = $xpath->query("//p");
 352                         foreach ($list as $node)
 353                                 if (strlen($node->nodeValue) > 40)
 354                                         $text .= " ".trim($node->nodeValue);
 355                 }
 356
 357                 if ($text != "") {
 358                         $text = trim(str_replace(array("\n", "\r"), array(" ", " "), $text));
 359
 360                         while (strpos($text, "  "))
 361                                 $text = trim(str_replace("  ", " ", $text));
 362
 363                         $siteinfo["text"] = trim(html_entity_decode(substr($text,0,350), ENT_QUOTES, "UTF-8").'...');
 364                 }
 365         }
 366
 367         logger("parseurl_getsiteinfo: Siteinfo for ".$url." ".print_r($siteinfo, true), LOGGER_DEBUG);
 368
 369         call_hooks('getsiteinfo', $siteinfo);
 370
 371         return($siteinfo);
 372 }
 373
 374 function arr_add_hashes(&$item,$k) {
 375         $item = '#' . $item;
 376 }
 377
 378 function parse_url_content(&$a) {
 379
 380         $text = null;
 381         $str_tags = '';
 382
 383         $textmode = false;
 384
 385         if(local_user() && (! feature_enabled(local_user(),'richtext')))
 386                 $textmode = true;
 387
 388         //if($textmode)
 389         $br = (($textmode) ? "\n" : '<br />');
 390
 391         if(x($_GET,'binurl'))
 392                 $url = trim(hex2bin($_GET['binurl']));
 393         else
 394                 $url = trim($_GET['url']);
 395
 396         if($_GET['title'])
 397                 $title = strip_tags(trim($_GET['title']));
 398
 399         if($_GET['description'])
 400                 $text = strip_tags(trim($_GET['description']));
 401
 402         if($_GET['tags']) {
 403                 $arr_tags = str_getcsv($_GET['tags']);
 404                 if(count($arr_tags)) {
 405                         array_walk($arr_tags,'arr_add_hashes');
 406                         $str_tags = $br . implode(' ',$arr_tags) . $br;
 407                 }
 408         }
 409
 410         // add url scheme if missing
 411         $arrurl = parse_url($url);
 412         if (!x($arrurl, 'scheme')) {
 413                 if (x($arrurl, 'host'))
 414                         $url = "http:".$url;
 415                 else
 416                         $url = "http://".$url;
 417         }
 418
 419         logger('parse_url: ' . $url);
 420
 421         if($textmode)
 422                 $template = '[bookmark=%s]%s[/bookmark]%s';
 423         else
 424                 $template = "<a class=\"bookmark\" href=\"%s\" >%s</a>%s";
 425
 426         $arr = array('url' => $url, 'text' => '');
 427
 428         call_hooks('parse_link', $arr);
 429
 430         if(strlen($arr['text'])) {
 431                 echo $arr['text'];
 432                 killme();
 433         }
 434
 435
 436         if($url && $title && $text) {
 437
 438                 $title = str_replace(array("\r","\n"),array('',''),$title);
 439
 440                 if($textmode)
 441                         $text = '[quote]' . trim($text) . '[/quote]' . $br;
 442                 else {
 443                         $text = '<blockquote>' . htmlspecialchars(trim($text)) . '</blockquote><br />';
 444                         $title = htmlspecialchars($title);
 445                 }
 446
 447                 $result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
 448
 449                 logger('parse_url (unparsed): returns: ' . $result);
 450
 451                 echo $result;
 452                 killme();
 453         }
 454
 455         $siteinfo = parseurl_getsiteinfo($url);
 456
 457 //      if ($textmode) {
 458 //              require_once("include/items.php");
 459 //
 460 //              echo add_page_info_data($siteinfo);
 461 //              killme();
 462 //      }
 463
 464         $url= $siteinfo["url"];
 465
 466         // If the link contains BBCode stuff, make a short link out of this to avoid parsing problems
 467         if (strpos($url, '[') OR strpos($url, ']')) {
 468                 require_once("include/network.php");
 469                 $url = short_link($url);
 470         }
 471
 472         $sitedata = "";
 473
 474         if($siteinfo["title"] != "") {
 475                 $text = $siteinfo["text"];
 476                 $title = $siteinfo["title"];
 477         }
 478
 479         $image = "";
 480
 481         if (($siteinfo["type"] != "video") AND (sizeof($siteinfo["images"]) > 0)){
 482                 /* Execute below code only if image is present in siteinfo */
 483
 484                 $total_images = 0;
 485                 $max_images = get_config('system','max_bookmark_images');
 486                 if($max_images === false)
 487                         $max_images = 2;
 488                 else
 489                         $max_images = intval($max_images);
 490
 491                 foreach ($siteinfo["images"] as $imagedata) {
 492                         if($textmode)
 493                                 $image .= '[img='.$imagedata["width"].'x'.$imagedata["height"].']'.$imagedata["src"].'[/img]' . "\n";
 494                         else
 495                                 $image .= '<img height="'.$imagedata["height"].'" width="'.$imagedata["width"].'" src="'.$imagedata["src"].'" alt="photo" /><br />';
 496                         $total_images ++;
 497                         if($max_images && $max_images >= $total_images)
 498                                 break;
 499                 }
 500         }
 501
 502         if(strlen($text)) {
 503                 if($textmode)
 504                         $text = '[quote]'.trim($text).'[/quote]';
 505                 else
 506                         $text = '<blockquote>'.htmlspecialchars(trim($text)).'</blockquote>';
 507         }
 508
 509         if($image)
 510                 $text = $br.$br.$image.$text;
 511         else
 512                 $text = $br.$text;
 513
 514         $title = str_replace(array("\r","\n"),array('',''),$title);
 515
 516         $result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
 517
 518         logger('parse_url: returns: ' . $result);
 519
 520         $sitedata .=  trim($result);
 521
 522         if (($siteinfo["type"] == "video") AND ($url != ""))
 523                 echo "[class=type-video]".$sitedata."[/class]";
 524         elseif (($siteinfo["type"] != "photo"))
 525                 echo "[class=type-link]".$sitedata."[/class]";
 526         else
 527                 echo "[class=type-photo]".$title.$br.$image."[/class]";
 528
 529         killme();
 530 }
 531 ?>