include/bbcode.php

   1 <?php
   2 use \Friendica\Core\Config;
   3
   4 require_once 'include/oembed.php';
   5 require_once 'include/event.php';
   6 require_once 'include/map.php';
   7 require_once 'mod/proxy.php';
   8 require_once 'include/Contact.php';
   9 require_once 'include/plaintext.php';
  10
  11 function bb_PictureCacheExt($matches) {
  12         if (strpos($matches[3], "data:image/") === 0)
  13                 return ($matches[0]);
  14
  15         $matches[3] = proxy_url($matches[3]);
  16         return "[img=".$matches[1]."x".$matches[2]."]".$matches[3]."[/img]";
  17 }
  18
  19 function bb_PictureCache($matches) {
  20         if (strpos($matches[1], "data:image/") === 0)
  21                 return ($matches[0]);
  22
  23         $matches[1] = proxy_url($matches[1]);
  24         return "[img]".$matches[1]."[/img]";
  25 }
  26
  27 function bb_map_coords($match) {
  28         // the extra space in the following line is intentional
  29         return str_replace($match[0],'<div class="map"  >' . generate_map(str_replace('/',' ',$match[1])) . '</div>', $match[0]);
  30 }
  31 function bb_map_location($match) {
  32         // the extra space in the following line is intentional
  33         return str_replace($match[0],'<div class="map"  >' . generate_named_map($match[1]) . '</div>', $match[0]);
  34 }
  35
  36 function bb_attachment($Text, $simplehtml = false, $tryoembed = true) {
  37
  38         $data = get_attachment_data($Text);
  39         if (!$data)
  40                 return $Text;
  41
  42         if (isset($data["title"])) {
  43                 $data["title"] = strip_tags($data["title"]);
  44                 $data["title"] = str_replace(array("http://", "https://"), "", $data["title"]);
  45         }
  46
  47         if (((strpos($data["text"], "[img=") !== false) OR (strpos($data["text"], "[img]") !== false)) AND ($data["image"] != "")) {
  48                 $data["preview"] = $data["image"];
  49                 $data["image"] = "";
  50         }
  51
  52         if ($simplehtml == 7) {
  53                 $title2 = $data["title"];
  54
  55                 $test1 = trim(html_entity_decode($data["text"],ENT_QUOTES,'UTF-8'));
  56                 $test2 = trim(html_entity_decode($data["title"],ENT_QUOTES,'UTF-8'));
  57
  58                 // If the link description is similar to the text above then don't add the link description
  59                 if (($data["title"] != "") AND ((strpos($test1,$test2) !== false) OR
  60                         (similar_text($test1,$test2) / strlen($data["title"])) > 0.9))
  61                         $title2 = $data["url"];
  62                 $text = sprintf('<a href="%s" title="%s" class="attachment thumbnail" rel="nofollow external">%s</a><br />',
  63                                 $data["url"], $data["title"], $title2);
  64         } elseif (($simplehtml != 4) AND ($simplehtml != 0))
  65                 $text = sprintf('<a href="%s" target="_blank">%s</a><br>', $data["url"], $data["title"]);
  66         else {
  67                 $text = sprintf('<span class="type-%s">', $data["type"]);
  68
  69                 $bookmark = array(sprintf('[bookmark=%s]%s[/bookmark]', $data["url"], $data["title"]), $data["url"], $data["title"]);
  70                 if ($tryoembed)
  71                         $oembed = tryoembed($bookmark);
  72                 else
  73                         $oembed = $bookmark[0];
  74
  75                 if (strstr(strtolower($oembed), "<iframe "))
  76                         $text = $oembed;
  77                 else {
  78                         if (($data["image"] != "") AND !strstr(strtolower($oembed), "<img "))
  79                                 $text .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-image" /></a><br />', $data["url"], proxy_url($data["image"]), $data["title"]);
  80                         elseif (($data["preview"] != "") AND !strstr(strtolower($oembed), "<img "))
  81                                 $text .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-preview" /></a><br />', $data["url"], proxy_url($data["preview"]), $data["title"]);
  82
  83                         if (($data["type"] == "photo") AND ($data["url"] != "") AND ($data["image"] != ""))
  84                                 $text .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-image" /></a>', $data["url"], proxy_url($data["image"]), $data["title"]);
  85                         else
  86                                 $text .= $oembed;
  87
  88                         if (trim($data["description"]) != "")
  89                                 $text .= sprintf('<blockquote>%s</blockquote></span>', trim(bbcode($data["description"])));
  90                 }
  91         }
  92         return $data["text"].$text.$data["after"];
  93 }
  94
  95 function bb_remove_share_information($Text, $plaintext = false, $nolink = false) {
  96
  97         $data = get_attachment_data($Text);
  98
  99         if (!$data)
 100                 return $Text;
 101
 102         if ($nolink)
 103                 return $data["text"].$data["after"];
 104
 105         $title = htmlentities($data["title"], ENT_QUOTES, 'UTF-8', false);
 106         $text = htmlentities($data["text"], ENT_QUOTES, 'UTF-8', false);
 107         if ($plaintext OR (($title != "") AND strstr($text, $title)))
 108                 $data["title"] = $data["url"];
 109         elseif (($text != "") AND strstr($title, $text)) {
 110                 $data["text"] = $data["title"];
 111                 $data["title"] = $data["url"];
 112         }
 113
 114         if (($data["text"] == "") AND ($data["title"] != "") AND ($data["url"] == ""))
 115                 return $data["title"].$data["after"];
 116
 117         // If the link already is included in the post, don't add it again
 118         if (($data["url"] != "") AND strpos($data["text"], $data["url"]))
 119                 return $data["text"].$data["after"];
 120
 121         $text = $data["text"];
 122
 123         if (($data["url"] != "") AND ($data["title"] != ""))
 124                 $text .= "\n[url=".$data["url"]."]".$data["title"]."[/url]";
 125         elseif (($data["url"] != ""))
 126                 $text .= "\n".$data["url"];
 127
 128         return $text."\n".$data["after"];
 129 }
 130
 131 function bb_cleanstyle($st) {
 132   return "<span style=\"".cleancss($st[1]).";\">".$st[2]."</span>";
 133 }
 134
 135 function bb_cleanclass($st) {
 136   return "<span class=\"".cleancss($st[1])."\">".$st[2]."</span>";
 137 }
 138
 139 function cleancss($input) {
 140
 141         $cleaned = "";
 142
 143         $input = strtolower($input);
 144
 145         for ($i = 0; $i < strlen($input); $i++) {
 146                 $char = substr($input, $i, 1);
 147
 148                 if (($char >= "a") and ($char <= "z"))
 149                         $cleaned .= $char;
 150
 151                 if (!(strpos(" #;:0123456789-_.%", $char) === false))
 152                         $cleaned .= $char;
 153         }
 154
 155         return($cleaned);
 156 }
 157
 158 function stripcode_br_cb($s) {
 159         return '[code]' . str_replace('<br />', '', $s[1]) . '[/code]';
 160 }
 161
 162 function tryoembed($match) {
 163         $url = $match[1];
 164
 165         // Always embed the SSL version
 166         $url = str_replace(array("http://www.youtube.com/", "http://player.vimeo.com/"),
 167                                 array("https://www.youtube.com/", "https://player.vimeo.com/"), $url);
 168
 169
 170         $o = oembed_fetch_url($url);
 171
 172         if (!is_object($o))
 173                 return $match[0];
 174
 175         if (isset($match[2]))
 176                 $o->title = $match[2];
 177
 178         if ($o->type=="error") return $match[0];
 179
 180         $html = oembed_format_object($o);
 181         return $html;
 182 }
 183
 184 // [noparse][i]italic[/i][/noparse] turns into
 185 // [noparse][ i ]italic[ /i ][/noparse],
 186 // to hide them from parser.
 187
 188 function bb_spacefy($st) {
 189         $whole_match = $st[0];
 190         $captured = $st[1];
 191         $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
 192         $new_str = str_replace($captured, $spacefied, $whole_match);
 193         return $new_str;
 194 }
 195
 196 // The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
 197 // now turns back and the [noparse] tags are trimed
 198 // returning [i]italic[/i]
 199
 200 function bb_unspacefy_and_trim($st) {
 201         $whole_match = $st[0];
 202         $captured = $st[1];
 203         $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
 204         return $unspacefied;
 205 }
 206
 207 function bb_find_open_close($s, $open, $close, $occurence = 1) {
 208
 209         if($occurence < 1)
 210                 $occurence = 1;
 211
 212         $start_pos = -1;
 213         for($i = 1; $i <= $occurence; $i++) {
 214                 if( $start_pos !== false)
 215                         $start_pos = strpos($s, $open, $start_pos + 1);
 216         }
 217
 218         if( $start_pos === false)
 219                 return false;
 220
 221         $end_pos = strpos($s, $close, $start_pos);
 222
 223         if( $end_pos === false)
 224                 return false;
 225
 226         $res = array( 'start' => $start_pos, 'end' => $end_pos );
 227
 228         return $res;
 229 }
 230
 231 function get_bb_tag_pos($s, $name, $occurence = 1) {
 232
 233         if($occurence < 1)
 234                 $occurence = 1;
 235
 236         $start_open = -1;
 237         for($i = 1; $i <= $occurence; $i++) {
 238                 if( $start_open !== false)
 239                         $start_open = strpos($s, '[' . $name, $start_open + 1); // allow [name= type tags
 240         }
 241
 242         if( $start_open === false)
 243                 return false;
 244
 245         $start_equal = strpos($s, '=', $start_open);
 246         $start_close = strpos($s, ']', $start_open);
 247
 248         if( $start_close === false)
 249                 return false;
 250
 251         $start_close++;
 252
 253         $end_open = strpos($s, '[/' . $name . ']', $start_close);
 254
 255         if( $end_open === false)
 256                 return false;
 257
 258         $res = array( 'start' => array('open' => $start_open, 'close' => $start_close),
 259                       'end' => array('open' => $end_open, 'close' => $end_open + strlen('[/' . $name . ']')) );
 260         if( $start_equal !== false)
 261                 $res['start']['equal'] = $start_equal + 1;
 262
 263         return $res;
 264 }
 265
 266 function bb_tag_preg_replace($pattern, $replace, $name, $s) {
 267
 268         $string = $s;
 269
 270         $occurence = 1;
 271         $pos = get_bb_tag_pos($string, $name, $occurence);
 272         while($pos !== false && $occurence < 1000) {
 273
 274                 $start = substr($string, 0, $pos['start']['open']);
 275                 $subject = substr($string, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
 276                 $end = substr($string, $pos['end']['close']);
 277                 if($end === false)
 278                         $end = '';
 279
 280                 $subject = preg_replace($pattern, $replace, $subject);
 281                 $string = $start . $subject . $end;
 282
 283                 $occurence++;
 284                 $pos = get_bb_tag_pos($string, $name, $occurence);
 285         }
 286
 287         return $string;
 288 }
 289
 290 if(! function_exists('bb_extract_images')) {
 291 function bb_extract_images($body) {
 292
 293         $saved_image = array();
 294         $orig_body = $body;
 295         $new_body = '';
 296
 297         $cnt = 0;
 298         $img_start = strpos($orig_body, '[img');
 299         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 300         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 301         while(($img_st_close !== false) && ($img_end !== false)) {
 302
 303                 $img_st_close++; // make it point to AFTER the closing bracket
 304                 $img_end += $img_start;
 305
 306                 if(! strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
 307                         // This is an embedded image
 308
 309                         $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
 310                         $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
 311
 312                         $cnt++;
 313                 }
 314                 else
 315                         $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
 316
 317                 $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
 318
 319                 if($orig_body === false) // in case the body ends on a closing image tag
 320                         $orig_body = '';
 321
 322                 $img_start = strpos($orig_body, '[img');
 323                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 324                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 325         }
 326
 327         $new_body = $new_body . $orig_body;
 328
 329         return array('body' => $new_body, 'images' => $saved_image);
 330 }}
 331
 332 if(! function_exists('bb_replace_images')) {
 333 function bb_replace_images($body, $images) {
 334
 335         $newbody = $body;
 336
 337         $cnt = 0;
 338         foreach ($images as $image) {
 339                 // We're depending on the property of 'foreach' (specified on the PHP website) that
 340                 // it loops over the array starting from the first element and going sequentially
 341                 // to the last element
 342                 $newbody = str_replace('[$#saved_image' . $cnt . '#$]', '<img src="' . proxy_url($image) .'" alt="' . t('Image/photo') . '" />', $newbody);
 343                 $cnt++;
 344         }
 345
 346         return $newbody;
 347 }}
 348
 349 function bb_ShareAttributes($share, $simplehtml) {
 350         $attributes = $share[2];
 351
 352         $author = "";
 353         preg_match("/author='(.*?)'/ism", $attributes, $matches);
 354         if ($matches[1] != "")
 355                 $author = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 356
 357         preg_match('/author="(.*?)"/ism', $attributes, $matches);
 358         if ($matches[1] != "")
 359                 $author = $matches[1];
 360
 361         $profile = "";
 362         preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 363         if ($matches[1] != "")
 364                 $profile = $matches[1];
 365
 366         preg_match('/profile="(.*?)"/ism', $attributes, $matches);
 367         if ($matches[1] != "")
 368                 $profile = $matches[1];
 369
 370         $avatar = "";
 371         preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 372         if ($matches[1] != "")
 373                 $avatar = $matches[1];
 374
 375         preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
 376         if ($matches[1] != "")
 377                 $avatar = $matches[1];
 378
 379         $link = "";
 380         preg_match("/link='(.*?)'/ism", $attributes, $matches);
 381         if ($matches[1] != "")
 382                 $link = $matches[1];
 383
 384         preg_match('/link="(.*?)"/ism', $attributes, $matches);
 385         if ($matches[1] != "")
 386                 $link = $matches[1];
 387
 388         $posted = "";
 389
 390         $itemcache = get_itemcachepath();
 391
 392         preg_match("/posted='(.*?)'/ism", $attributes, $matches);
 393         if ($matches[1] != "")
 394                 $posted = $matches[1];
 395
 396         preg_match('/posted="(.*?)"/ism', $attributes, $matches);
 397         if ($matches[1] != "")
 398                 $posted = $matches[1];
 399
 400         // relative dates only make sense when they aren't cached
 401         if ($itemcache == "")
 402                 $reldate = (($posted) ? " " . relative_date($posted) : '');
 403
 404         // We only call this so that a previously unknown contact can be added.
 405         // This is important for the function "get_contact_details_by_url".
 406         // This function then can fetch an entry from the contact table.
 407         get_contact($profile, 0);
 408
 409         $data = get_contact_details_by_url($profile);
 410
 411         if (isset($data["name"]) AND ($data["name"] != "") AND isset($data["addr"]) AND ($data["addr"] != ""))
 412                 $userid_compact = $data["name"]." (".$data["addr"].")";
 413         else
 414                 $userid_compact = GetProfileUsername($profile,$author, true);
 415
 416         if (isset($data["addr"]) AND ($data["addr"] != ""))
 417                 $userid = $data["addr"];
 418         else
 419                 $userid = GetProfileUsername($profile,$author, false);
 420
 421         if (isset($data["name"]) AND ($data["name"] != ""))
 422                 $author = $data["name"];
 423
 424         if (isset($data["micro"]) AND ($data["micro"] != ""))
 425                 $avatar = $data["micro"];
 426
 427         $preshare = trim($share[1]);
 428
 429         if ($preshare != "")
 430                 $preshare .= "<br /><br />";
 431
 432         switch ($simplehtml) {
 433                 case 1:
 434                         $text = $preshare.html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8').' <a href="'.$profile.'">'.$userid."</a>: <br />»".$share[3]."«";
 435                         break;
 436                 case 2:
 437                         $text = $preshare.html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8').' '.$userid_compact.": <br />".$share[3];
 438                         break;
 439                 case 3: // Diaspora
 440                         $headline .= '<b>'.html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8').$userid.':</b><br />';
 441
 442                         $text = trim($share[1]);
 443
 444                         if ($text != "")
 445                                 $text .= "<hr />";
 446
 447                         if (substr(normalise_link($link), 0, 19) != "http://twitter.com/") {
 448                                 $text .= $headline.'<blockquote>'.trim($share[3])."</blockquote><br />";
 449
 450                                 if ($link != "")
 451                                         $text .= '<br /><a href="'.$link.'">[l]</a>';
 452                         } else
 453                                 $text .= '<br /><a href="'.$link.'">'.$link.'</a>';
 454
 455                         break;
 456                 case 4:
 457                         $headline = '<div class="shared_header">';
 458                         $headline .= '<span><b>'.html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8');
 459                         $headline .= sprintf(t('<a href="%1$s" target="_blank">%2$s</a> %3$s'), $link, $userid, $posted);
 460                         $headline .= ":</b></span></div>";
 461
 462                         $text = trim($share[1]);
 463
 464                         if ($text != "")
 465                                 $text .= "<hr />";
 466
 467                         $text .= $headline.'<blockquote class="shared_content">'.trim($share[3])."</blockquote><br />";
 468
 469                         break;
 470                 case 5:
 471                         $text = $preshare.html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8').' '.$userid_compact.": <br />".$share[3];
 472                         break;
 473                 case 6: // app.net
 474                         $text = $preshare."&gt;&gt; @".$userid_compact.": <br />".$share[3];
 475                         break;
 476                 case 7: // statusnet/GNU Social
 477                         $text = $preshare.html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8')." @".$userid_compact.": ".$share[3];
 478                         break;
 479                 case 8: // twitter
 480                         $text = $preshare."RT @".$userid_compact.": ".$share[3];
 481                         break;
 482                 case 9: // Google+/Facebook
 483                         $text = $preshare.html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8').' '.$userid_compact.": <br />".$share[3];
 484
 485                         if ($link != "")
 486                                 $text .= "<br /><br />".$link;
 487                         break;
 488                 default:
 489                         $text = trim($share[1])."\n";
 490
 491                         $avatar = proxy_url($avatar, false, PROXY_SIZE_THUMB);
 492
 493                         $tpl = get_markup_template('shared_content.tpl');
 494                         $text .= replace_macros($tpl,
 495                                         array(
 496                                                 '$profile' => $profile,
 497                                                 '$avatar' => $avatar,
 498                                                 '$author' => $author,
 499                                                 '$link' => $link,
 500                                                 '$posted' => $posted,
 501                                                 '$reldate' => $reldate,
 502                                                 '$content' => trim($share[3])
 503                                         )
 504                                 );
 505                         break;
 506         }
 507         return($text);
 508 }
 509
 510 function GetProfileUsername($profile, $username, $compact = false, $getnetwork = false) {
 511
 512         $twitter = preg_replace("=https?://twitter.com/(.*)=ism", "$1@twitter.com", $profile);
 513         if ($twitter != $profile) {
 514                 if ($getnetwork)
 515                         return(NETWORK_TWITTER);
 516                 elseif ($compact)
 517                         return($twitter);
 518                 else
 519                         return($username." (".$twitter.")");
 520         }
 521
 522         $appnet = preg_replace("=https?://alpha.app.net/(.*)=ism", "$1@alpha.app.net", $profile);
 523         if ($appnet != $profile) {
 524                 if ($getnetwork)
 525                         return(NETWORK_APPNET);
 526                 elseif ($compact)
 527                         return($appnet);
 528                 else
 529                         return($username." (".$appnet.")");
 530         }
 531
 532         $gplus = preg_replace("=https?://plus.google.com/(.*)=ism", "$1@plus.google.com", $profile);
 533         if ($gplus != $profile) {
 534                 if ($getnetwork)
 535                         return(NETWORK_GPLUS);
 536                 elseif ($compact)
 537                         return($gplususername." (".$username.")");
 538                 else
 539                         return($username." (".$gplus.")");
 540         }
 541
 542         $friendica = preg_replace("=https?://(.*)/profile/(.*)=ism", "$2@$1", $profile);
 543         if ($friendica != $profile) {
 544                 if ($getnetwork)
 545                         return(NETWORK_DFRN);
 546                 elseif ($compact)
 547                         return($friendica);
 548                 else
 549                         return($username." (".$friendica.")");
 550         }
 551
 552         $diaspora = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
 553         if ($diaspora != $profile) {
 554                 if ($getnetwork)
 555                         return(NETWORK_DIASPORA);
 556                 elseif ($compact)
 557                         return($diaspora);
 558                 else
 559                         return($username." (".$diaspora.")");
 560         }
 561
 562         $red = preg_replace("=https?://(.*)/channel/(.*)=ism", "$2@$1", $profile);
 563         if ($red != $profile) {
 564                 if ($getnetwork)
 565                         // red is identified as Diaspora - friendica can't connect directly to it
 566                         return(NETWORK_DIASPORA);
 567                 elseif ($compact)
 568                         return($red);
 569                 else
 570                         return($username." (".$red.")");
 571         }
 572
 573         $StatusnetHost = preg_replace("=https?://(.*)/user/(.*)=ism", "$1", $profile);
 574         if ($StatusnetHost != $profile) {
 575                 $StatusnetUser = preg_replace("=https?://(.*)/user/(.*)=ism", "$2", $profile);
 576                 if ($StatusnetUser != $profile) {
 577                         $UserData = fetch_url("http://".$StatusnetHost."/api/users/show.json?user_id=".$StatusnetUser);
 578                         $user = json_decode($UserData);
 579                         if ($user) {
 580                                 if ($getnetwork)
 581                                         return(NETWORK_STATUSNET);
 582                                 elseif ($compact)
 583                                         return($user->screen_name."@".$StatusnetHost);
 584                                 else
 585                                         return($username." (".$user->screen_name."@".$StatusnetHost.")");
 586                         }
 587                 }
 588         }
 589
 590         // pumpio (http://host.name/user)
 591         $rest = preg_replace("=https?://([\.\w]+)/([\.\w]+)(.*)=ism", "$3", $profile);
 592         if ($rest == "") {
 593                 $pumpio = preg_replace("=https?://([\.\w]+)/([\.\w]+)(.*)=ism", "$2@$1", $profile);
 594                 if ($pumpio != $profile) {
 595                         if ($getnetwork)
 596                                 return(NETWORK_PUMPIO);
 597                         elseif ($compact)
 598                                 return($pumpio);
 599                         else
 600                                 return($username." (".$pumpio.")");
 601                 }
 602         }
 603
 604         return($username);
 605 }
 606
 607 function bb_DiasporaLinks($match) {
 608         return "[url=".App::get_baseurl()."/display/".$match[1]."]".$match[2]."[/url]";
 609 }
 610
 611 function bb_RemovePictureLinks($match) {
 612         $text = Cache::get($match[1]);
 613
 614         if(is_null($text)){
 615                 $a = get_app();
 616
 617                 $stamp1 = microtime(true);
 618
 619                 $ch = @curl_init($match[1]);
 620                 @curl_setopt($ch, CURLOPT_NOBODY, true);
 621                 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 622                 @curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
 623                 @curl_exec($ch);
 624                 $curl_info = @curl_getinfo($ch);
 625
 626                 $a->save_timestamp($stamp1, "network");
 627
 628                 if (substr($curl_info["content_type"], 0, 6) == "image/")
 629                         $text = "[url=".$match[1]."]".$match[1]."[/url]";
 630                 else {
 631                         $text = "[url=".$match[2]."]".$match[2]."[/url]";
 632
 633                         // if its not a picture then look if its a page that contains a picture link
 634                         require_once("include/network.php");
 635
 636                         $body = fetch_url($match[1]);
 637
 638                         $doc = new DOMDocument();
 639                         @$doc->loadHTML($body);
 640                         $xpath = new DomXPath($doc);
 641                         $list = $xpath->query("//meta[@name]");
 642                         foreach ($list as $node) {
 643                                 $attr = array();
 644
 645                                 if ($node->attributes->length)
 646                                         foreach ($node->attributes as $attribute)
 647                                                 $attr[$attribute->name] = $attribute->value;
 648
 649                                 if (strtolower($attr["name"]) == "twitter:image")
 650                                         $text = "[url=".$attr["content"]."]".$attr["content"]."[/url]";
 651                         }
 652                 }
 653                 Cache::set($match[1],$text);
 654         }
 655         return($text);
 656 }
 657
 658 function bb_expand_links($match) {
 659         if (($match[3] == "") OR ($match[2] == $match[3]) OR stristr($match[2], $match[3]))
 660                 return ($match[1]."[url]".$match[2]."[/url]");
 661         else
 662                 return ($match[1].$match[3]." [url]".$match[2]."[/url]");
 663 }
 664
 665 function bb_CleanPictureLinksSub($match) {
 666         $text = Cache::get($match[1]);
 667
 668         if(is_null($text)){
 669                 $a = get_app();
 670
 671                 $stamp1 = microtime(true);
 672
 673                 $ch = @curl_init($match[1]);
 674                 @curl_setopt($ch, CURLOPT_NOBODY, true);
 675                 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 676                 @curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
 677                 @curl_exec($ch);
 678                 $curl_info = @curl_getinfo($ch);
 679
 680                 $a->save_timestamp($stamp1, "network");
 681
 682                 // if its a link to a picture then embed this picture
 683                 if (substr($curl_info["content_type"], 0, 6) == "image/")
 684                         $text = "[img]".$match[1]."[/img]";
 685                 else {
 686                         $text = "[img]".$match[2]."[/img]";
 687
 688                         // if its not a picture then look if its a page that contains a picture link
 689                         require_once("include/network.php");
 690
 691                         $body = fetch_url($match[1]);
 692
 693                         $doc = new DOMDocument();
 694                         @$doc->loadHTML($body);
 695                         $xpath = new DomXPath($doc);
 696                         $list = $xpath->query("//meta[@name]");
 697                         foreach ($list as $node) {
 698                                 $attr = array();
 699
 700                                 if ($node->attributes->length)
 701                                         foreach ($node->attributes as $attribute)
 702                                                 $attr[$attribute->name] = $attribute->value;
 703
 704                                 if (strtolower($attr["name"]) == "twitter:image")
 705                                         $text = "[img]".$attr["content"]."[/img]";
 706                         }
 707                 }
 708                 Cache::set($match[1],$text);
 709         }
 710         return($text);
 711 }
 712
 713 function bb_CleanPictureLinks($text) {
 714         $text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'bb_CleanPictureLinksSub', $text);
 715         return ($text);
 716 }
 717
 718 function bb_highlight($match) {
 719         if(in_array(strtolower($match[1]),['php','css','mysql','sql','abap','diff','html','perl','ruby',
 720                 'vbscript','avrc','dtd','java','xml','cpp','python','javascript','js','sh']))
 721                 return text_highlight($match[2],strtolower($match[1]));
 722         return $match[0];
 723 }
 724
 725 /**
 726  * @brief Converts a BBCode message to HTML message
 727  *
 728  * BBcode 2 HTML was written by WAY2WEB.net
 729  * extended to work with Mistpark/Friendica - Mike Macgirvin
 730  *
 731  * Simple HTML values meaning:
 732  * - 0: Friendica display
 733  * - 1: Unused
 734  * - 2: Used for Facebook, Google+, Windows Phone push, Friendica API
 735  * - 3: Used before converting to Markdown in bb2diaspora.php
 736  * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
 737  * - 5: Unused
 738  * - 6: Used for Appnet
 739  * - 7: Used for dfrn, OStatus
 740  * - 8: Used for WP backlink text setting
 741  *
 742  * @staticvar array $allowed_src_protocols
 743  * @param string $Text
 744  * @param bool $preserve_nl
 745  * @param bool $tryoembed
 746  * @param int $simplehtml
 747  * @param bool $forplaintext
 748  * @return string
 749  */
 750 function bbcode($Text, $preserve_nl = false, $tryoembed = true, $simplehtml = false, $forplaintext = false) {
 751
 752         $a = get_app();
 753
 754         // Hide all [noparse] contained bbtags by spacefying them
 755         // POSSIBLE BUG --> Will the 'preg' functions crash if there's an embedded image?
 756
 757         $Text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'bb_spacefy', $Text);
 758         $Text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'bb_spacefy', $Text);
 759         $Text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'bb_spacefy', $Text);
 760
 761         // Remove the abstract element. It is a non visible element.
 762         $Text = remove_abstract($Text);
 763
 764         // Move all spaces out of the tags
 765         $Text = preg_replace("/\[(\w*)\](\s*)/ism", '$2[$1]', $Text);
 766         $Text = preg_replace("/(\s*)\[\/(\w*)\]/ism", '[/$2]$1', $Text);
 767
 768         // Extract the private images which use data urls since preg has issues with
 769         // large data sizes. Stash them away while we do bbcode conversion, and then put them back
 770         // in after we've done all the regex matching. We cannot use any preg functions to do this.
 771
 772         $extracted = bb_extract_images($Text);
 773         $Text = $extracted['body'];
 774         $saved_image = $extracted['images'];
 775
 776         // If we find any event code, turn it into an event.
 777         // After we're finished processing the bbcode we'll
 778         // replace all of the event code with a reformatted version.
 779
 780         $ev = bbtoevent($Text);
 781
 782         // Replace any html brackets with HTML Entities to prevent executing HTML or script
 783         // Don't use strip_tags here because it breaks [url] search by replacing & with amp
 784
 785         $Text = str_replace("<", "&lt;", $Text);
 786         $Text = str_replace(">", "&gt;", $Text);
 787
 788         // remove some newlines before the general conversion
 789         $Text = preg_replace("/\s?\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "[share$1]$2[/share]", $Text);
 790         $Text = preg_replace("/\s?\[quote(.*?)\]\s?(.*?)\s?\[\/quote\]\s?/ism", "[quote$1]$2[/quote]", $Text);
 791
 792         $Text = preg_replace("/\n\[code\]/ism", "[code]", $Text);
 793         $Text = preg_replace("/\[\/code\]\n/ism", "[/code]", $Text);
 794
 795         // when the content is meant exporting to other systems then remove the avatar picture since this doesn't really look good on these systems
 796         if (!$tryoembed) {
 797                 $Text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1$2]$3[/share]", $Text);
 798         }
 799
 800         // Check for [code] text here, before the linefeeds are messed with.
 801         // The highlighter will unescape and re-escape the content.
 802         if (strpos($Text, '[code=') !== false) {
 803                 $Text = preg_replace_callback("/\[code=(.*?)\](.*?)\[\/code\]/ism", 'bb_highlight', $Text);
 804         }
 805         // Convert new line chars to html <br /> tags
 806
 807         // nlbr seems to be hopelessly messed up
 808         //      $Text = nl2br($Text);
 809
 810         // We'll emulate it.
 811
 812         $Text = trim($Text);
 813         $Text = str_replace("\r\n", "\n", $Text);
 814
 815         // removing multiplicated newlines
 816         if (get_config("system", "remove_multiplicated_lines")) {
 817                 $search = array("\n\n\n", "\n ", " \n", "[/quote]\n\n", "\n[/quote]", "[/li]\n", "\n[li]", "\n[ul]", "[/ul]\n", "\n\n[share ", "[/attachment]\n",
 818                                 "\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n");
 819                 $replace = array("\n\n", "\n", "\n", "[/quote]\n", "[/quote]", "[/li]", "[li]", "[ul]", "[/ul]", "\n[share ", "[/attachment]",
 820                                 "[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]");
 821                 do {
 822                         $oldtext = $Text;
 823                         $Text = str_replace($search, $replace, $Text);
 824                 } while ($oldtext != $Text);
 825         }
 826
 827         // Handle attached links or videos
 828         $Text = bb_attachment($Text, $simplehtml, $tryoembed);
 829
 830         $Text = str_replace(array("\r","\n"), array('<br />','<br />'), $Text);
 831
 832         if ($preserve_nl) {
 833                 $Text = str_replace(array("\n", "\r"), array('', ''), $Text);
 834         }
 835
 836         // Set up the parameters for a URL search string
 837         $URLSearchString = "^\[\]";
 838         // Set up the parameters for a MAIL search string
 839         $MAILSearchString = $URLSearchString;
 840
 841         // Remove all hashtag addresses
 842         if ((!$tryoembed OR $simplehtml) AND !in_array($simplehtml, array(3, 7))) {
 843                 $Text = preg_replace("/([#@])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '$1$3', $Text);
 844         } elseif ($simplehtml == 3) {
 845                 $Text = preg_replace("/([@])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
 846                         '$1<a href="$2">$3</a>',
 847                         $Text);
 848         } elseif ($simplehtml == 7) {
 849                 $Text = preg_replace("/([@])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
 850                         '$1<span class="vcard"><a href="$2" class="url" title="$3"><span class="fn nickname mention">$3</span></a></span>',
 851                         $Text);
 852         } elseif (!$simplehtml) {
 853                 $Text = preg_replace("/([@])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
 854                         '$1<a href="$2" class="userinfo mention" title="$3">$3</a>',
 855                         $Text);
 856         }
 857
 858         // Bookmarks in red - will be converted to bookmarks in friendica
 859         $Text = preg_replace("/#\^\[url\]([$URLSearchString]*)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $Text);
 860         $Text = preg_replace("/#\^\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $Text);
 861         $Text = preg_replace("/#\[url\=[$URLSearchString]*\]\^\[\/url\]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i",
 862                                 "[bookmark=$1]$2[/bookmark]", $Text);
 863
 864         if (in_array($simplehtml, array(2, 6, 7, 8, 9))) {
 865                 $Text = preg_replace_callback("/([^#@])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "bb_expand_links", $Text);
 866                 //$Text = preg_replace("/[^#@]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $Text);
 867                 $Text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]',$Text);
 868         }
 869
 870         if ($simplehtml == 5) {
 871                 $Text = preg_replace("/[^#@]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[url]$1[/url]', $Text);
 872         }
 873
 874         // Perform URL Search
 875         if ($tryoembed) {
 876                 $Text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", 'tryoembed', $Text);
 877         }
 878
 879         if ($simplehtml == 5) {
 880                 $Text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url]$1[/url]', $Text);
 881         } else {
 882                 $Text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $Text);
 883         }
 884
 885         // Handle Diaspora posts
 886         $Text = preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi", 'bb_DiasporaLinks', $Text);
 887
 888         // if the HTML is used to generate plain text, then don't do this search, but replace all URL of that kind to text
 889 //      if ($simplehtml != 7) {
 890                 if (!$forplaintext) {
 891                         $Text = preg_replace("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1<a href="$2" target="_blank">$2</a>', $Text);
 892                 } else {
 893                         $Text = preg_replace("(\[url\]([$URLSearchString]*)\[\/url\])ism", " $1 ", $Text);
 894                         $Text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'bb_RemovePictureLinks', $Text);
 895                 }
 896 //      }
 897
 898         if ($tryoembed) {
 899                 $Text = preg_replace_callback("/\[url\]([$URLSearchString]*)\[\/url\]/ism", 'tryoembed', $Text);
 900         }
 901
 902         $Text = preg_replace("/([#])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
 903                                 '$1<a href="$2" class="tag" title="$3">$3</a>', $Text);
 904
 905         $Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '<a href="$1" target="_blank">$1</a>', $Text);
 906         $Text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank">$2</a>', $Text);
 907         //$Text = preg_replace("/\[url\=([$URLSearchString]*)\]([$URLSearchString]*)\[\/url\]/ism", '<a href="$1" target="_blank">$2</a>', $Text);
 908
 909         // Red compatibility, though the link can't be authenticated on Friendica
 910         $Text = preg_replace("/\[zrl\=([$URLSearchString]*)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank">$2</a>', $Text);
 911
 912
 913         // we may need to restrict this further if it picks up too many strays
 914         // link acct:user@host to a webfinger profile redirector
 915
 916         $Text = preg_replace('/acct:([^@]+)@((?!\-)(?:[a-zA-Z\d\-]{0,62}[a-zA-Z\d]\.){1,126}(?!\d+)[a-zA-Z\d]{1,63})/', '<a href="' . App::get_baseurl() . '/acctlink?addr=$1@$2" target="extlink">acct:$1@$2</a>', $Text);
 917
 918         // Perform MAIL Search
 919         $Text = preg_replace("/\[mail\]([$MAILSearchString]*)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $Text);
 920         $Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $Text);
 921
 922         // leave open the posibility of [map=something]
 923         // this is replaced in prepare_body() which has knowledge of the item location
 924
 925         if (strpos($Text, '[/map]') !== false) {
 926                 $Text = preg_replace_callback("/\[map\](.*?)\[\/map\]/ism", 'bb_map_location', $Text);
 927         }
 928         if (strpos($Text, '[map=') !== false) {
 929                 $Text = preg_replace_callback("/\[map=(.*?)\]/ism", 'bb_map_coords', $Text);
 930         }
 931         if (strpos($Text, '[map]') !== false) {
 932                 $Text = preg_replace("/\[map\]/", '<div class="map"></div>', $Text);
 933         }
 934
 935         // Check for headers
 936         $Text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '<h1>$1</h1>', $Text);
 937         $Text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '<h2>$1</h2>', $Text);
 938         $Text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '<h3>$1</h3>', $Text);
 939         $Text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '<h4>$1</h4>', $Text);
 940         $Text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '<h5>$1</h5>', $Text);
 941         $Text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '<h6>$1</h6>', $Text);
 942
 943         // Check for paragraph
 944         $Text = preg_replace("(\[p\](.*?)\[\/p\])ism", '<p>$1</p>', $Text);
 945
 946         // Check for bold text
 947         $Text = preg_replace("(\[b\](.*?)\[\/b\])ism", '<strong>$1</strong>', $Text);
 948
 949         // Check for Italics text
 950         $Text = preg_replace("(\[i\](.*?)\[\/i\])ism", '<em>$1</em>', $Text);
 951
 952         // Check for Underline text
 953         $Text = preg_replace("(\[u\](.*?)\[\/u\])ism", '<u>$1</u>', $Text);
 954
 955         // Check for strike-through text
 956         $Text = preg_replace("(\[s\](.*?)\[\/s\])ism", '<strike>$1</strike>', $Text);
 957
 958         // Check for over-line text
 959         $Text = preg_replace("(\[o\](.*?)\[\/o\])ism", '<span class="overline">$1</span>', $Text);
 960
 961         // Check for colored text
 962         $Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism", "<span style=\"color: $1;\">$2</span>", $Text);
 963
 964         // Check for sized text
 965         // [size=50] --> font-size: 50px (with the unit).
 966         $Text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism", "<span style=\"font-size: $1px; line-height: initial;\">$2</span>", $Text);
 967         $Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "<span style=\"font-size: $1; line-height: initial;\">$2</span>", $Text);
 968
 969         // Check for centered text
 970         $Text = preg_replace("(\[center\](.*?)\[\/center\])ism", "<div style=\"text-align:center;\">$1</div>", $Text);
 971
 972         // Check for list text
 973         $Text = str_replace("[*]", "<li>", $Text);
 974
 975         // Check for style sheet commands
 976         $Text = preg_replace_callback("(\[style=(.*?)\](.*?)\[\/style\])ism", "bb_cleanstyle", $Text);
 977
 978         // Check for CSS classes
 979         $Text = preg_replace_callback("(\[class=(.*?)\](.*?)\[\/class\])ism", "bb_cleanclass", $Text);
 980
 981         // handle nested lists
 982         $endlessloop = 0;
 983
 984         while ((((strpos($Text, "[/list]") !== false) && (strpos($Text, "[list") !== false)) ||
 985                ((strpos($Text, "[/ol]") !== false) && (strpos($Text, "[ol]") !== false)) ||
 986                ((strpos($Text, "[/ul]") !== false) && (strpos($Text, "[ul]") !== false)) ||
 987                ((strpos($Text, "[/li]") !== false) && (strpos($Text, "[li]") !== false))) && (++$endlessloop < 20)) {
 988                 $Text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $Text);
 989                 $Text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>', $Text);
 990                 $Text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $Text);
 991                 $Text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>', $Text);
 992                 $Text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>', $Text);
 993                 $Text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>', $Text);
 994                 $Text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>', $Text);
 995                 $Text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $Text);
 996                 $Text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $Text);
 997                 $Text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>', $Text);
 998         }
 999
1000         $Text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>', $Text);
1001         $Text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>', $Text);
1002         $Text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>', $Text);
1003         $Text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '<table>$1</table>', $Text);
1004
1005         $Text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>', $Text);
1006         $Text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>', $Text);
1007
1008         $Text = str_replace('[hr]', '<hr />', $Text);
1009
1010         // This is actually executed in prepare_body()
1011
1012         $Text = str_replace('[nosmile]', '', $Text);
1013
1014         // Check for font change text
1015         $Text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm", "<span style=\"font-family: $1;\">$2</span>", $Text);
1016
1017         // Declare the format for [code] layout
1018
1019 //      $Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/ism", 'stripcode_br_cb', $Text);
1020
1021         $CodeLayout = '<code>$1</code>';
1022         // Check for [code] text
1023         $Text = preg_replace("/\[code\](.*?)\[\/code\]/ism", "$CodeLayout", $Text);
1024
1025         // Declare the format for [spoiler] layout
1026         $SpoilerLayout = '<blockquote class="spoiler">$1</blockquote>';
1027
1028         // Check for [spoiler] text
1029         // handle nested quotes
1030         $endlessloop = 0;
1031         while ((strpos($Text, "[/spoiler]") !== false) and (strpos($Text, "[spoiler]") !== false) and (++$endlessloop < 20)) {
1032                 $Text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism", "$SpoilerLayout", $Text);
1033         }
1034
1035         // Check for [spoiler=Author] text
1036
1037         $t_wrote = t('$1 wrote:');
1038
1039         // handle nested quotes
1040         $endlessloop = 0;
1041         while ((strpos($Text, "[/spoiler]")!== false)  and (strpos($Text, "[spoiler=") !== false) and (++$endlessloop < 20)) {
1042                 $Text = preg_replace("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
1043                                      "<br /><strong class=".'"spoiler"'.">" . $t_wrote . "</strong><blockquote class=".'"spoiler"'.">$2</blockquote>",
1044                                      $Text);
1045         }
1046
1047         // Declare the format for [quote] layout
1048         $QuoteLayout = '<blockquote>$1</blockquote>';
1049
1050         // Check for [quote] text
1051         // handle nested quotes
1052         $endlessloop = 0;
1053         while ((strpos($Text, "[/quote]") !== false) and (strpos($Text, "[quote]") !== false) and (++$endlessloop < 20)) {
1054                 $Text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $Text);
1055         }
1056
1057         // Check for [quote=Author] text
1058
1059         $t_wrote = t('$1 wrote:');
1060
1061         // handle nested quotes
1062         $endlessloop = 0;
1063         while ((strpos($Text, "[/quote]")!== false)  and (strpos($Text, "[quote=") !== false) and (++$endlessloop < 20)) {
1064                 $Text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
1065                                      "<br /><strong class=".'"author"'.">" . $t_wrote . "</strong><blockquote>$2</blockquote>",
1066                                      $Text);
1067         }
1068
1069
1070         // [img=widthxheight]image source[/img]
1071         $Text = preg_replace_callback("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", 'bb_PictureCacheExt', $Text);
1072
1073         $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $Text);
1074         $Text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $Text);
1075
1076         // Images
1077         // [img]pathtoimage[/img]
1078         $Text = preg_replace_callback("/\[img\](.*?)\[\/img\]/ism", 'bb_PictureCache', $Text);
1079
1080         $Text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . t('Image/photo') . '" />', $Text);
1081         $Text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . t('Image/photo') . '" />', $Text);
1082
1083         // Shared content
1084         $Text = preg_replace_callback("/(.*?)\[share(.*?)\](.*?)\[\/share\]/ism",
1085                 function ($match) use ($simplehtml){
1086                         return(bb_ShareAttributes($match, $simplehtml));
1087                 }, $Text);
1088
1089         $Text = preg_replace("/\[crypt\](.*?)\[\/crypt\]/ism", '<br/><img src="' .App::get_baseurl() . '/images/lock_icon.gif" alt="' . t('Encrypted content') . '" title="' . t('Encrypted content') . '" /><br />', $Text);
1090         $Text = preg_replace("/\[crypt(.*?)\](.*?)\[\/crypt\]/ism", '<br/><img src="' .App::get_baseurl() . '/images/lock_icon.gif" alt="' . t('Encrypted content') . '" title="' . '$1' . ' ' . t('Encrypted content') . '" /><br />', $Text);
1091         //$Text = preg_replace("/\[crypt=(.*?)\](.*?)\[\/crypt\]/ism", '<br/><img src="' .App::get_baseurl() . '/images/lock_icon.gif" alt="' . t('Encrypted content') . '" title="' . '$1' . ' ' . t('Encrypted content') . '" /><br />', $Text);
1092
1093
1094         // Try to Oembed
1095         if ($tryoembed) {
1096                 $Text = preg_replace("/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4))\[\/video\]/ism", '<video src="$1" controls="controls" width="' . $a->videowidth . '" height="' . $a->videoheight . '"><a href="$1">$1</a></video>', $Text);
1097                 $Text = preg_replace("/\[audio\](.*?\.(ogg|ogv|oga|ogm|webm|mp4|mp3))\[\/audio\]/ism", '<audio src="$1" controls="controls"><a href="$1">$1</a></audio>', $Text);
1098
1099                 $Text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", 'tryoembed', $Text);
1100                 $Text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", 'tryoembed', $Text);
1101         } else {
1102                 $Text = preg_replace("/\[video\](.*?)\[\/video\]/",
1103                                         '<a href="$1" target="_blank">$1</a>', $Text);
1104                 $Text = preg_replace("/\[audio\](.*?)\[\/audio\]/",
1105                                         '<a href="$1" target="_blank">$1</a>', $Text);
1106         }
1107
1108         // html5 video and audio
1109
1110
1111         if ($tryoembed) {
1112                 $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<iframe src="$1" width="' . $a->videowidth . '" height="' . $a->videoheight . '"><a href="$1">$1</a></iframe>', $Text);
1113         } else {
1114                 $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $Text);
1115         }
1116
1117         // Youtube extensions
1118         if ($tryoembed) {
1119                 $Text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", 'tryoembed', $Text);
1120                 $Text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", 'tryoembed', $Text);
1121                 $Text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism", 'tryoembed', $Text);
1122         }
1123
1124         $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $Text);
1125         $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $Text);
1126         $Text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $Text);
1127
1128         if ($tryoembed) {
1129                 $Text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", '<iframe width="' . $a->videowidth . '" height="' . $a->videoheight . '" src="https://www.youtube.com/embed/$1" frameborder="0" ></iframe>', $Text);
1130         } else {
1131                 $Text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
1132                                         '<a href="https://www.youtube.com/watch?v=$1" target="_blank">https://www.youtube.com/watch?v=$1</a>', $Text);
1133         }
1134
1135         if ($tryoembed) {
1136                 $Text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism", 'tryoembed', $Text);
1137                 $Text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism", 'tryoembed', $Text);
1138         }
1139
1140         $Text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $Text);
1141         $Text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $Text);
1142
1143         if ($tryoembed) {
1144                 $Text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", '<iframe width="' . $a->videowidth . '" height="' . $a->videoheight . '" src="https://player.vimeo.com/video/$1" frameborder="0" ></iframe>', $Text);
1145         } else {
1146                 $Text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
1147                                         '<a href="https://vimeo.com/$1" target="_blank">https://vimeo.com/$1</a>', $Text);
1148         }
1149
1150 //      $Text = preg_replace("/\[youtube\](.*?)\[\/youtube\]/", '<object width="425" height="350" type="application/x-shockwave-flash" data="http://www.youtube.com/v/$1" ><param name="movie" value="http://www.youtube.com/v/$1"></param><!--[if IE]><embed src="http://www.youtube.com/v/$1" type="application/x-shockwave-flash" width="425" height="350" /><![endif]--></object>', $Text);
1151
1152         // oembed tag
1153         $Text = oembed_bbcode2html($Text);
1154
1155         // Avoid triple linefeeds through oembed
1156         $Text = str_replace("<br style='clear:left'></span><br /><br />", "<br style='clear:left'></span><br />", $Text);
1157
1158         // If we found an event earlier, strip out all the event code and replace with a reformatted version.
1159         // Replace the event-start section with the entire formatted event. The other bbcode is stripped.
1160         // Summary (e.g. title) is required, earlier revisions only required description (in addition to
1161         // start which is always required). Allow desc with a missing summary for compatibility.
1162
1163         if((x($ev, 'desc') || x($ev, 'summary')) && x($ev, 'start')) {
1164                 $sub = format_event_html($ev, $simplehtml);
1165
1166                 $Text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $Text);
1167                 $Text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $Text);
1168                 $Text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $Text);
1169                 $Text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $Text);
1170                 $Text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $Text);
1171                 $Text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/ism", '', $Text);
1172                 $Text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $Text);
1173         }
1174
1175
1176         // Replace inline code blocks
1177         $Text = preg_replace_callback("|(?!<br[^>]*>)<code>([^<]*)</code>(?!<br[^>]*>)|ism",
1178                 function ($match) use ($simplehtml) {
1179                         $return = '<key>' . $match[1] . '</key>';
1180                         // Use <code> for Diaspora inline code blocks
1181                         if ($simplehtml === 3) {
1182                                 $return = '<code>' . $match[1] . '</code>';
1183                         }
1184                         return $return;
1185                 }
1186         , $Text);
1187
1188         // Unhide all [noparse] contained bbtags unspacefying them
1189         // and triming the [noparse] tag.
1190
1191         $Text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'bb_unspacefy_and_trim', $Text);
1192         $Text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'bb_unspacefy_and_trim', $Text);
1193         $Text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'bb_unspacefy_and_trim', $Text);
1194
1195
1196         $Text = preg_replace('/\[\&amp\;([#a-z0-9]+)\;\]/', '&$1;', $Text);
1197         $Text = preg_replace('/\&\#039\;/', '\'', $Text);
1198         $Text = preg_replace('/\&quot\;/', '"', $Text);
1199
1200         // fix any escaped ampersands that may have been converted into links
1201         $Text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism', '<$1$2=$3&$4>', $Text);
1202
1203         // sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
1204         static $allowed_src_protocols = array('http', 'redir', 'cid');
1205         $Text = preg_replace('#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
1206                              '<$1$2=""$4 class="invalid-src" title="' . t('Invalid source protocol') . '">', $Text);
1207
1208         // sanitize href attributes (only whitelisted protocols URLs)
1209         // default value for backward compatibility
1210         $allowed_link_protocols = Config::get('system', 'allowed_link_protocols', array('ftp', 'mailto', 'gopher', 'cid'));
1211
1212         // Always allowed protocol even if config isn't set or not including it
1213         $allowed_link_protocols[] = 'http';
1214
1215         $regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
1216         $Text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 class="invalid-href" title="' . t('Invalid link protocol') . '">', $Text);
1217
1218         if($saved_image) {
1219                 $Text = bb_replace_images($Text, $saved_image);
1220         }
1221
1222         // Clean up the HTML by loading and saving the HTML with the DOM.
1223         // Bad structured html can break a whole page.
1224         // For performance reasons do it only with ativated item cache or at export.
1225         if (!$tryoembed OR (get_itemcachepath() != "")) {
1226                 $doc = new DOMDocument();
1227                 $doc->preserveWhiteSpace = false;
1228
1229                 $Text = mb_convert_encoding($Text, 'HTML-ENTITIES', "UTF-8");
1230
1231                 $doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">';
1232                 $encoding = '<?xml encoding="UTF-8">';
1233                 @$doc->loadHTML($encoding.$doctype."<html><body>".$Text."</body></html>");
1234                 $doc->encoding = 'UTF-8';
1235                 $Text = $doc->saveHTML();
1236                 $Text = str_replace(array("<html><body>", "</body></html>", $doctype, $encoding), array("", "", "", ""), $Text);
1237
1238                 $Text = str_replace('<br></li>', '</li>', $Text);
1239
1240                 //$Text = mb_convert_encoding($Text, "UTF-8", 'HTML-ENTITIES');
1241         }
1242
1243         // Clean up some useless linebreaks in lists
1244         //$Text = str_replace('<br /><ul', '<ul ', $Text);
1245         //$Text = str_replace('</ul><br />', '</ul>', $Text);
1246         //$Text = str_replace('</li><br />', '</li>', $Text);
1247         //$Text = str_replace('<br /><li>', '<li>', $Text);
1248         //$Text = str_replace('<br /><ul', '<ul ', $Text);
1249
1250         call_hooks('bbcode', $Text);
1251
1252         return trim($Text);
1253 }
1254
1255 /**
1256  * @brief Removes the "abstract" element from the text
1257  *
1258  * @param string $text The text with BBCode
1259  * @return string The same text - but without "abstract" element
1260  */
1261 function remove_abstract($text) {
1262         $text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", '', $text);
1263         $text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", '', $text);
1264
1265         return $text;
1266 }
1267
1268 /**
1269  * @brief Returns the value of the "abstract" element
1270  *
1271  * @param string $text The text that maybe contains the element
1272  * @param string $addon The addon for which the abstract is meant for
1273  * @return string The abstract
1274  */
1275 function fetch_abstract($text, $addon = "") {
1276         $abstract = "";
1277         $abstracts = array();
1278         $addon = strtolower($addon);
1279
1280         if (preg_match_all("/\[abstract=(.*?)\](.*?)\[\/abstract\]/ism",$text, $results, PREG_SET_ORDER))
1281                 foreach ($results AS $result)
1282                         $abstracts[strtolower($result[1])] = $result[2];
1283
1284         if (isset($abstracts[$addon]))
1285                 $abstract = $abstracts[$addon];
1286
1287         if ($abstract == "")
1288                 if (preg_match("/\[abstract\](.*?)\[\/abstract\]/ism",$text, $result))
1289                         $abstract = $result[1];
1290
1291         return $abstract;
1292 }