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1 <?php 2 /** 3 * kses 0.2.2 - HTML/XHTML filter that only allows some elements and attributes 4 * Copyright (C) 2002, 2003, 2005 Ulf Harnhammar 5 * 6 * This program is free software and open source software; you can redistribute 7 * it and/or modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of the License, 9 * or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 14 * more details. 15 * 16 * You should have received a copy of the GNU General Public License along 17 * with this program; if not, write to the Free Software Foundation, Inc., 18 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA 19 * http://www.gnu.org/licenses/gpl.html 20 * 21 * [kses strips evil scripts!] 22 * 23 * Added wp_ prefix to avoid conflicts with existing kses users 24 * 25 * @version 0.2.2 26 * @copyright (C) 2002, 2003, 2005 27 * @author Ulf Harnhammar <http://advogato.org/person/metaur/> 28 * 29 * @package External 30 * @subpackage KSES 31 * 32 */ 33 34 /** 35 * You can override this in a plugin. 36 * 37 * @since 1.2.0 38 */ 39 if ( ! defined( 'CUSTOM_TAGS' ) ) 40 define( 'CUSTOM_TAGS', false ); 41 42 if ( ! CUSTOM_TAGS ) { 43 /** 44 * Kses global for default allowable HTML tags. 45 * 46 * Can be override by using CUSTOM_TAGS constant. 47 * 48 * @global array $allowedposttags 49 * @since 2.0.0 50 */ 51 $allowedposttags = array( 52 'address' => array(), 53 'a' => array( 54 'class' => true, 55 'href' => true, 56 'id' => true, 57 'title' => true, 58 'rel' => true, 59 'rev' => true, 60 'name' => true, 61 'target' => true, 62 ), 63 'abbr' => array( 64 'class' => true, 65 'title' => true, 66 ), 67 'acronym' => array( 68 'title' => true, 69 ), 70 'article' => array( 71 'align' => true, 72 'class' => true, 73 'dir' => true, 74 'lang' => true, 75 'style' => true, 76 'xml:lang' => true, 77 ), 78 'aside' => array( 79 'align' => true, 80 'class' => true, 81 'dir' => true, 82 'lang' => true, 83 'style' => true, 84 'xml:lang' => true, 85 ), 86 'b' => array(), 87 'big' => array(), 88 'blockquote' => array( 89 'id' => true, 90 'cite' => true, 91 'class' => true, 92 'lang' => true, 93 'xml:lang' => true, 94 ), 95 'br' => array ( 96 'class' => true, 97 ), 98 'button' => array( 99 'disabled' => true, 100 'name' => true, 101 'type' => true, 102 'value' => true, 103 ), 104 'caption' => array( 105 'align' => true, 106 'class' => true, 107 ), 108 'cite' => array ( 109 'class' => true, 110 'dir' => true, 111 'lang' => true, 112 'title' => true, 113 ), 114 'code' => array ( 115 'style' => true, 116 ), 117 'col' => array( 118 'align' => true, 119 'char' => true, 120 'charoff' => true, 121 'span' => true, 122 'dir' => true, 123 'style' => true, 124 'valign' => true, 125 'width' => true, 126 ), 127 'del' => array( 128 'datetime' => true, 129 ), 130 'dd' => array(), 131 'details' => array( 132 'align' => true, 133 'class' => true, 134 'dir' => true, 135 'lang' => true, 136 'open' => true, 137 'style' => true, 138 'xml:lang' => true, 139 ), 140 'div' => array( 141 'align' => true, 142 'class' => true, 143 'dir' => true, 144 'lang' => true, 145 'style' => true, 146 'xml:lang' => true, 147 ), 148 'dl' => array(), 149 'dt' => array(), 150 'em' => array(), 151 'fieldset' => array(), 152 'figure' => array( 153 'align' => true, 154 'class' => true, 155 'dir' => true, 156 'lang' => true, 157 'style' => true, 158 'xml:lang' => true, 159 ), 160 'figcaption' => array( 161 'align' => true, 162 'class' => true, 163 'dir' => true, 164 'lang' => true, 165 'style' => true, 166 'xml:lang' => true, 167 ), 168 'font' => array( 169 'color' => true, 170 'face' => true, 171 'size' => true, 172 ), 173 'footer' => array( 174 'align' => true, 175 'class' => true, 176 'dir' => true, 177 'lang' => true, 178 'style' => true, 179 'xml:lang' => true, 180 ), 181 'form' => array( 182 'action' => true, 183 'accept' => true, 184 'accept-charset' => true, 185 'enctype' => true, 186 'method' => true, 187 'name' => true, 188 'target' => true, 189 ), 190 'h1' => array( 191 'align' => true, 192 'class' => true, 193 'id' => true, 194 'style' => true, 195 ), 196 'h2' => array ( 197 'align' => true, 198 'class' => true, 199 'id' => true, 200 'style' => true, 201 ), 202 'h3' => array ( 203 'align' => true, 204 'class' => true, 205 'id' => true, 206 'style' => true, 207 ), 208 'h4' => array ( 209 'align' => true, 210 'class' => true, 211 'id' => true, 212 'style' => true, 213 ), 214 'h5' => array ( 215 'align' => true, 216 'class' => true, 217 'id' => true, 218 'style' => true, 219 ), 220 'h6' => array ( 221 'align' => true, 222 'class' => true, 223 'id' => true, 224 'style' => true, 225 ), 226 'header' => array( 227 'align' => true, 228 'class' => true, 229 'dir' => true, 230 'lang' => true, 231 'style' => true, 232 'xml:lang' => true, 233 ), 234 'hgroup' => array( 235 'align' => true, 236 'class' => true, 237 'dir' => true, 238 'lang' => true, 239 'style' => true, 240 'xml:lang' => true, 241 ), 242 'hr' => array ( 243 'align' => true, 244 'class' => true, 245 'noshade' => true, 246 'size' => true, 247 'width' => true, 248 ), 249 'i' => array(), 250 'img' => array( 251 'alt' => true, 252 'align' => true, 253 'border' => true, 254 'class' => true, 255 'height' => true, 256 'hspace' => true, 257 'longdesc' => true, 258 'vspace' => true, 259 'src' => true, 260 'style' => true, 261 'width' => true, 262 ), 263 'ins' => array( 264 'datetime' => true, 265 'cite' => true, 266 ), 267 'kbd' => array(), 268 'label' => array( 269 'for' => true, 270 ), 271 'legend' => array( 272 'align' => true, 273 ), 274 'li' => array ( 275 'align' => true, 276 'class' => true, 277 ), 278 'menu' => array ( 279 'class' => true, 280 'style' => true, 281 'type' => true, 282 ), 283 'nav' => array( 284 'align' => true, 285 'class' => true, 286 'dir' => true, 287 'lang' => true, 288 'style' => true, 289 'xml:lang' => true, 290 ), 291 'p' => array( 292 'class' => true, 293 'align' => true, 294 'dir' => true, 295 'lang' => true, 296 'style' => true, 297 'xml:lang' => true, 298 ), 299 'pre' => array( 300 'style' => true, 301 'width' => true, 302 ), 303 'q' => array( 304 'cite' => true, 305 ), 306 's' => array(), 307 'span' => array ( 308 'class' => true, 309 'dir' => true, 310 'align' => true, 311 'lang' => true, 312 'style' => true, 313 'title' => true, 314 'xml:lang' => true, 315 ), 316 'section' => array( 317 'align' => true, 318 'class' => true, 319 'dir' => true, 320 'lang' => true, 321 'style' => true, 322 'xml:lang' => true, 323 ), 324 'strike' => array(), 325 'strong' => array(), 326 'sub' => array(), 327 'summary' => array( 328 'align' => true, 329 'class' => true, 330 'dir' => true, 331 'lang' => true, 332 'style' => true, 333 'xml:lang' => true, 334 ), 335 'sup' => array(), 336 'table' => array( 337 'align' => true, 338 'bgcolor' => true, 339 'border' => true, 340 'cellpadding' => true, 341 'cellspacing' => true, 342 'class' => true, 343 'dir' => true, 344 'id' => true, 345 'rules' => true, 346 'style' => true, 347 'summary' => true, 348 'width' => true, 349 ), 350 'tbody' => array( 351 'align' => true, 352 'char' => true, 353 'charoff' => true, 354 'valign' => true, 355 ), 356 'td' => array( 357 'abbr' => true, 358 'align' => true, 359 'axis' => true, 360 'bgcolor' => true, 361 'char' => true, 362 'charoff' => true, 363 'class' => true, 364 'colspan' => true, 365 'dir' => true, 366 'headers' => true, 367 'height' => true, 368 'nowrap' => true, 369 'rowspan' => true, 370 'scope' => true, 371 'style' => true, 372 'valign' => true, 373 'width' => true, 374 ), 375 'textarea' => array( 376 'cols' => true, 377 'rows' => true, 378 'disabled' => true, 379 'name' => true, 380 'readonly' => true, 381 ), 382 'tfoot' => array( 383 'align' => true, 384 'char' => true, 385 'class' => true, 386 'charoff' => true, 387 'valign' => true, 388 ), 389 'th' => array( 390 'abbr' => true, 391 'align' => true, 392 'axis' => true, 393 'bgcolor' => true, 394 'char' => true, 395 'charoff' => true, 396 'class' => true, 397 'colspan' => true, 398 'headers' => true, 399 'height' => true, 400 'nowrap' => true, 401 'rowspan' => true, 402 'scope' => true, 403 'valign' => true, 404 'width' => true, 405 ), 406 'thead' => array( 407 'align' => true, 408 'char' => true, 409 'charoff' => true, 410 'class' => true, 411 'valign' => true, 412 ), 413 'title' => array(), 414 'tr' => array( 415 'align' => true, 416 'bgcolor' => true, 417 'char' => true, 418 'charoff' => true, 419 'class' => true, 420 'style' => true, 421 'valign' => true, 422 ), 423 'tt' => array(), 424 'u' => array(), 425 'ul' => array ( 426 'class' => true, 427 'style' => true, 428 'type' => true, 429 ), 430 'ol' => array ( 431 'class' => true, 432 'start' => true, 433 'style' => true, 434 'type' => true, 435 ), 436 'var' => array(), 437 ); 438 439 /** 440 * Kses allowed HTML elements. 441 * 442 * @global array $allowedtags 443 * @since 1.0.0 444 */ 445 $allowedtags = array( 446 'a' => array( 447 'href' => true, 448 'title' => true, 449 ), 450 'abbr' => array( 451 'title' => true, 452 ), 453 'acronym' => array( 454 'title' => true, 455 ), 456 'b' => array(), 457 'blockquote' => array( 458 'cite' => true, 459 ), 460 // 'br' => array(), 461 'cite' => array(), 462 'code' => array(), 463 'del' => array( 464 'datetime' => true, 465 ), 466 // 'dd' => array(), 467 // 'dl' => array(), 468 // 'dt' => array(), 469 'em' => array (), 'i' => array (), 470 // 'ins' => array('datetime' => array(), 'cite' => array()), 471 // 'li' => array(), 472 // 'ol' => array(), 473 // 'p' => array(), 474 'q' => array( 475 'cite' => true, 476 ), 477 'strike' => array(), 478 'strong' => array(), 479 // 'sub' => array(), 480 // 'sup' => array(), 481 // 'u' => array(), 482 // 'ul' => array(), 483 ); 484 485 $allowedentitynames = array( 486 'nbsp', 'iexcl', 'cent', 'pound', 'curren', 'yen', 487 'brvbar', 'sect', 'uml', 'copy', 'ordf', 'laquo', 488 'not', 'shy', 'reg', 'macr', 'deg', 'plusmn', 489 'acute', 'micro', 'para', 'middot', 'cedil', 'ordm', 490 'raquo', 'iquest', 'Agrave', 'Aacute', 'Acirc', 'Atilde', 491 'Auml', 'Aring', 'AElig', 'Ccedil', 'Egrave', 'Eacute', 492 'Ecirc', 'Euml', 'Igrave', 'Iacute', 'Icirc', 'Iuml', 493 'ETH', 'Ntilde', 'Ograve', 'Oacute', 'Ocirc', 'Otilde', 494 'Ouml', 'times', 'Oslash', 'Ugrave', 'Uacute', 'Ucirc', 495 'Uuml', 'Yacute', 'THORN', 'szlig', 'agrave', 'aacute', 496 'acirc', 'atilde', 'auml', 'aring', 'aelig', 'ccedil', 497 'egrave', 'eacute', 'ecirc', 'euml', 'igrave', 'iacute', 498 'icirc', 'iuml', 'eth', 'ntilde', 'ograve', 'oacute', 499 'ocirc', 'otilde', 'ouml', 'divide', 'oslash', 'ugrave', 500 'uacute', 'ucirc', 'uuml', 'yacute', 'thorn', 'yuml', 501 'quot', 'amp', 'lt', 'gt', 'apos', 'OElig', 502 'oelig', 'Scaron', 'scaron', 'Yuml', 'circ', 'tilde', 503 'ensp', 'emsp', 'thinsp', 'zwnj', 'zwj', 'lrm', 504 'rlm', 'ndash', 'mdash', 'lsquo', 'rsquo', 'sbquo', 505 'ldquo', 'rdquo', 'bdquo', 'dagger', 'Dagger', 'permil', 506 'lsaquo', 'rsaquo', 'euro', 'fnof', 'Alpha', 'Beta', 507 'Gamma', 'Delta', 'Epsilon', 'Zeta', 'Eta', 'Theta', 508 'Iota', 'Kappa', 'Lambda', 'Mu', 'Nu', 'Xi', 509 'Omicron', 'Pi', 'Rho', 'Sigma', 'Tau', 'Upsilon', 510 'Phi', 'Chi', 'Psi', 'Omega', 'alpha', 'beta', 511 'gamma', 'delta', 'epsilon', 'zeta', 'eta', 'theta', 512 'iota', 'kappa', 'lambda', 'mu', 'nu', 'xi', 513 'omicron', 'pi', 'rho', 'sigmaf', 'sigma', 'tau', 514 'upsilon', 'phi', 'chi', 'psi', 'omega', 'thetasym', 515 'upsih', 'piv', 'bull', 'hellip', 'prime', 'Prime', 516 'oline', 'frasl', 'weierp', 'image', 'real', 'trade', 517 'alefsym', 'larr', 'uarr', 'rarr', 'darr', 'harr', 518 'crarr', 'lArr', 'uArr', 'rArr', 'dArr', 'hArr', 519 'forall', 'part', 'exist', 'empty', 'nabla', 'isin', 520 'notin', 'ni', 'prod', 'sum', 'minus', 'lowast', 521 'radic', 'prop', 'infin', 'ang', 'and', 'or', 522 'cap', 'cup', 'int', 'sim', 'cong', 'asymp', 523 'ne', 'equiv', 'le', 'ge', 'sub', 'sup', 524 'nsub', 'sube', 'supe', 'oplus', 'otimes', 'perp', 525 'sdot', 'lceil', 'rceil', 'lfloor', 'rfloor', 'lang', 526 'rang', 'loz', 'spades', 'clubs', 'hearts', 'diams', 527 ); 528 } 529 530 /** 531 * Filters content and keeps only allowable HTML elements. 532 * 533 * This function makes sure that only the allowed HTML element names, attribute 534 * names and attribute values plus only sane HTML entities will occur in 535 * $string. You have to remove any slashes from PHP's magic quotes before you 536 * call this function. 537 * 538 * The default allowed protocols are 'http', 'https', 'ftp', 'mailto', 'news', 539 * 'irc', 'gopher', 'nntp', 'feed', 'telnet, 'mms', 'rtsp' and 'svn'. This 540 * covers all common link protocols, except for 'javascript' which should not 541 * be allowed for untrusted users. 542 * 543 * @since 1.0.0 544 * 545 * @param string $string Content to filter through kses 546 * @param array $allowed_html List of allowed HTML elements 547 * @param array $allowed_protocols Optional. Allowed protocol in links. 548 * @return string Filtered content with only allowed HTML elements 549 */ 550 function wp_kses($string, $allowed_html, $allowed_protocols = array ()) { 551 if ( empty( $allowed_protocols ) ) 552 $allowed_protocols = wp_allowed_protocols(); 553 $string = wp_kses_no_null($string); 554 $string = wp_kses_js_entities($string); 555 $string = wp_kses_normalize_entities($string); 556 $allowed_html_fixed = wp_kses_array_lc($allowed_html); 557 $string = wp_kses_hook($string, $allowed_html_fixed, $allowed_protocols); // WP changed the order of these funcs and added args to wp_kses_hook 558 return wp_kses_split($string, $allowed_html_fixed, $allowed_protocols); 559 } 560 561 /** 562 * You add any kses hooks here. 563 * 564 * There is currently only one kses WordPress hook and it is called here. All 565 * parameters are passed to the hooks and expected to receive a string. 566 * 567 * @since 1.0.0 568 * 569 * @param string $string Content to filter through kses 570 * @param array $allowed_html List of allowed HTML elements 571 * @param array $allowed_protocols Allowed protocol in links 572 * @return string Filtered content through 'pre_kses' hook 573 */ 574 function wp_kses_hook($string, $allowed_html, $allowed_protocols) { 575 $string = apply_filters('pre_kses', $string, $allowed_html, $allowed_protocols); 576 return $string; 577 } 578 579 /** 580 * This function returns kses' version number. 581 * 582 * @since 1.0.0 583 * 584 * @return string KSES Version Number 585 */ 586 function wp_kses_version() { 587 return '0.2.2'; 588 } 589 590 /** 591 * Searches for HTML tags, no matter how malformed. 592 * 593 * It also matches stray ">" characters. 594 * 595 * @since 1.0.0 596 * 597 * @param string $string Content to filter 598 * @param array $allowed_html Allowed HTML elements 599 * @param array $allowed_protocols Allowed protocols to keep 600 * @return string Content with fixed HTML tags 601 */ 602 function wp_kses_split($string, $allowed_html, $allowed_protocols) { 603 global $pass_allowed_html, $pass_allowed_protocols; 604 $pass_allowed_html = $allowed_html; 605 $pass_allowed_protocols = $allowed_protocols; 606 return preg_replace_callback( '%(<!--.*?(-->|$))|(<[^>]*(>|$)|>)%', '_wp_kses_split_callback', $string ); 607 } 608 609 /** 610 * Callback for wp_kses_split. 611 * 612 * @since 3.1.0 613 * @access private 614 */ 615 function _wp_kses_split_callback( $match ) { 616 global $pass_allowed_html, $pass_allowed_protocols; 617 return wp_kses_split2( $match[0], $pass_allowed_html, $pass_allowed_protocols ); 618 } 619 620 /** 621 * Callback for wp_kses_split for fixing malformed HTML tags. 622 * 623 * This function does a lot of work. It rejects some very malformed things like 624 * <:::>. It returns an empty string, if the element isn't allowed (look ma, no 625 * strip_tags()!). Otherwise it splits the tag into an element and an attribute 626 * list. 627 * 628 * After the tag is split into an element and an attribute list, it is run 629 * through another filter which will remove illegal attributes and once that is 630 * completed, will be returned. 631 * 632 * @access private 633 * @since 1.0.0 634 * @uses wp_kses_attr() 635 * 636 * @param string $string Content to filter 637 * @param array $allowed_html Allowed HTML elements 638 * @param array $allowed_protocols Allowed protocols to keep 639 * @return string Fixed HTML element 640 */ 641 function wp_kses_split2($string, $allowed_html, $allowed_protocols) { 642 $string = wp_kses_stripslashes($string); 643 644 if (substr($string, 0, 1) != '<') 645 return '>'; 646 # It matched a ">" character 647 648 if ( '<!--' == substr( $string, 0, 4 ) ) { 649 $string = str_replace( array('<!--', '-->'), '', $string ); 650 while ( $string != ($newstring = wp_kses($string, $allowed_html, $allowed_protocols)) ) 651 $string = $newstring; 652 if ( $string == '' ) 653 return ''; 654 // prevent multiple dashes in comments 655 $string = preg_replace('/--+/', '-', $string); 656 // prevent three dashes closing a comment 657 $string = preg_replace('/-$/', '', $string); 658 return "<!--{$string}-->"; 659 } 660 # Allow HTML comments 661 662 if (!preg_match('%^<\s*(/\s*)?([a-zA-Z0-9]+)([^>]*)>?$%', $string, $matches)) 663 return ''; 664 # It's seriously malformed 665 666 $slash = trim($matches[1]); 667 $elem = $matches[2]; 668 $attrlist = $matches[3]; 669 670 if ( ! isset($allowed_html[strtolower($elem)]) ) 671 return ''; 672 # They are using a not allowed HTML element 673 674 if ($slash != '') 675 return "</$elem>"; 676 # No attributes are allowed for closing elements 677 678 return wp_kses_attr( $elem, $attrlist, $allowed_html, $allowed_protocols ); 679 } 680 681 /** 682 * Removes all attributes, if none are allowed for this element. 683 * 684 * If some are allowed it calls wp_kses_hair() to split them further, and then 685 * it builds up new HTML code from the data that kses_hair() returns. It also 686 * removes "<" and ">" characters, if there are any left. One more thing it does 687 * is to check if the tag has a closing XHTML slash, and if it does, it puts one 688 * in the returned code as well. 689 * 690 * @since 1.0.0 691 * 692 * @param string $element HTML element/tag 693 * @param string $attr HTML attributes from HTML element to closing HTML element tag 694 * @param array $allowed_html Allowed HTML elements 695 * @param array $allowed_protocols Allowed protocols to keep 696 * @return string Sanitized HTML element 697 */ 698 function wp_kses_attr($element, $attr, $allowed_html, $allowed_protocols) { 699 # Is there a closing XHTML slash at the end of the attributes? 700 701 $xhtml_slash = ''; 702 if (preg_match('%\s*/\s*$%', $attr)) 703 $xhtml_slash = ' /'; 704 705 # Are any attributes allowed at all for this element? 706 if ( ! isset($allowed_html[strtolower($element)]) || count($allowed_html[strtolower($element)]) == 0 ) 707 return "<$element$xhtml_slash>"; 708 709 # Split it 710 $attrarr = wp_kses_hair($attr, $allowed_protocols); 711 712 # Go through $attrarr, and save the allowed attributes for this element 713 # in $attr2 714 $attr2 = ''; 715 716 $allowed_attr = $allowed_html[strtolower($element)]; 717 foreach ($attrarr as $arreach) { 718 if ( ! isset( $allowed_attr[strtolower($arreach['name'])] ) ) 719 continue; # the attribute is not allowed 720 721 $current = $allowed_attr[strtolower($arreach['name'])]; 722 if ( $current == '' ) 723 continue; # the attribute is not allowed 724 725 if ( strtolower( $arreach['name'] ) == 'style' ) { 726 $orig_value = $arreach['value']; 727 $value = safecss_filter_attr( $orig_value ); 728 729 if ( empty( $value ) ) 730 continue; 731 732 $arreach['value'] = $value; 733 $arreach['whole'] = str_replace( $orig_value, $value, $arreach['whole'] ); 734 } 735 736 if ( ! is_array($current) ) { 737 $attr2 .= ' '.$arreach['whole']; 738 # there are no checks 739 740 } else { 741 # there are some checks 742 $ok = true; 743 foreach ($current as $currkey => $currval) { 744 if ( ! wp_kses_check_attr_val($arreach['value'], $arreach['vless'], $currkey, $currval) ) { 745 $ok = false; 746 break; 747 } 748 } 749 750 if ( $ok ) 751 $attr2 .= ' '.$arreach['whole']; # it passed them 752 } # if !is_array($current) 753 } # foreach 754 755 # Remove any "<" or ">" characters 756 $attr2 = preg_replace('/[<>]/', '', $attr2); 757 758 return "<$element$attr2$xhtml_slash>"; 759 } 760 761 /** 762 * Builds an attribute list from string containing attributes. 763 * 764 * This function does a lot of work. It parses an attribute list into an array 765 * with attribute data, and tries to do the right thing even if it gets weird 766 * input. It will add quotes around attribute values that don't have any quotes 767 * or apostrophes around them, to make it easier to produce HTML code that will 768 * conform to W3C's HTML specification. It will also remove bad URL protocols 769 * from attribute values. It also reduces duplicate attributes by using the 770 * attribute defined first (foo='bar' foo='baz' will result in foo='bar'). 771 * 772 * @since 1.0.0 773 * 774 * @param string $attr Attribute list from HTML element to closing HTML element tag 775 * @param array $allowed_protocols Allowed protocols to keep 776 * @return array List of attributes after parsing 777 */ 778 function wp_kses_hair($attr, $allowed_protocols) { 779 $attrarr = array (); 780 $mode = 0; 781 $attrname = ''; 782 $uris = array('xmlns', 'profile', 'href', 'src', 'cite', 'classid', 'codebase', 'data', 'usemap', 'longdesc', 'action'); 783 784 # Loop through the whole attribute list 785 786 while (strlen($attr) != 0) { 787 $working = 0; # Was the last operation successful? 788 789 switch ($mode) { 790 case 0 : # attribute name, href for instance 791 792 if (preg_match('/^([-a-zA-Z]+)/', $attr, $match)) { 793 $attrname = $match[1]; 794 $working = $mode = 1; 795 $attr = preg_replace('/^[-a-zA-Z]+/', '', $attr); 796 } 797 798 break; 799 800 case 1 : # equals sign or valueless ("selected") 801 802 if (preg_match('/^\s*=\s*/', $attr)) # equals sign 803 { 804 $working = 1; 805 $mode = 2; 806 $attr = preg_replace('/^\s*=\s*/', '', $attr); 807 break; 808 } 809 810 if (preg_match('/^\s+/', $attr)) # valueless 811 { 812 $working = 1; 813 $mode = 0; 814 if(false === array_key_exists($attrname, $attrarr)) { 815 $attrarr[$attrname] = array ('name' => $attrname, 'value' => '', 'whole' => $attrname, 'vless' => 'y'); 816 } 817 $attr = preg_replace('/^\s+/', '', $attr); 818 } 819 820 break; 821 822 case 2 : # attribute value, a URL after href= for instance 823 824 if (preg_match('%^"([^"]*)"(\s+|/?$)%', $attr, $match)) 825 # "value" 826 { 827 $thisval = $match[1]; 828 if ( in_array(strtolower($attrname), $uris) ) 829 $thisval = wp_kses_bad_protocol($thisval, $allowed_protocols); 830 831 if(false === array_key_exists($attrname, $attrarr)) { 832 $attrarr[$attrname] = array ('name' => $attrname, 'value' => $thisval, 'whole' => "$attrname=\"$thisval\"", 'vless' => 'n'); 833 } 834 $working = 1; 835 $mode = 0; 836 $attr = preg_replace('/^"[^"]*"(\s+|$)/', '', $attr); 837 break; 838 } 839 840 if (preg_match("%^'([^']*)'(\s+|/?$)%", $attr, $match)) 841 # 'value' 842 { 843 $thisval = $match[1]; 844 if ( in_array(strtolower($attrname), $uris) ) 845 $thisval = wp_kses_bad_protocol($thisval, $allowed_protocols); 846 847 if(false === array_key_exists($attrname, $attrarr)) { 848 $attrarr[$attrname] = array ('name' => $attrname, 'value' => $thisval, 'whole' => "$attrname='$thisval'", 'vless' => 'n'); 849 } 850 $working = 1; 851 $mode = 0; 852 $attr = preg_replace("/^'[^']*'(\s+|$)/", '', $attr); 853 break; 854 } 855 856 if (preg_match("%^([^\s\"']+)(\s+|/?$)%", $attr, $match)) 857 # value 858 { 859 $thisval = $match[1]; 860 if ( in_array(strtolower($attrname), $uris) ) 861 $thisval = wp_kses_bad_protocol($thisval, $allowed_protocols); 862 863 if(false === array_key_exists($attrname, $attrarr)) { 864 $attrarr[$attrname] = array ('name' => $attrname, 'value' => $thisval, 'whole' => "$attrname=\"$thisval\"", 'vless' => 'n'); 865 } 866 # We add quotes to conform to W3C's HTML spec. 867 $working = 1; 868 $mode = 0; 869 $attr = preg_replace("%^[^\s\"']+(\s+|$)%", '', $attr); 870 } 871 872 break; 873 } # switch 874 875 if ($working == 0) # not well formed, remove and try again 876 { 877 $attr = wp_kses_html_error($attr); 878 $mode = 0; 879 } 880 } # while 881 882 if ($mode == 1 && false === array_key_exists($attrname, $attrarr)) 883 # special case, for when the attribute list ends with a valueless 884 # attribute like "selected" 885 $attrarr[$attrname] = array ('name' => $attrname, 'value' => '', 'whole' => $attrname, 'vless' => 'y'); 886 887 return $attrarr; 888 } 889 890 /** 891 * Performs different checks for attribute values. 892 * 893 * The currently implemented checks are "maxlen", "minlen", "maxval", "minval" 894 * and "valueless". 895 * 896 * @since 1.0.0 897 * 898 * @param string $value Attribute value 899 * @param string $vless Whether the value is valueless. Use 'y' or 'n' 900 * @param string $checkname What $checkvalue is checking for. 901 * @param mixed $checkvalue What constraint the value should pass 902 * @return bool Whether check passes 903 */ 904 function wp_kses_check_attr_val($value, $vless, $checkname, $checkvalue) { 905 $ok = true; 906 907 switch (strtolower($checkname)) { 908 case 'maxlen' : 909 # The maxlen check makes sure that the attribute value has a length not 910 # greater than the given value. This can be used to avoid Buffer Overflows 911 # in WWW clients and various Internet servers. 912 913 if (strlen($value) > $checkvalue) 914 $ok = false; 915 break; 916 917 case 'minlen' : 918 # The minlen check makes sure that the attribute value has a length not 919 # smaller than the given value. 920 921 if (strlen($value) < $checkvalue) 922 $ok = false; 923 break; 924 925 case 'maxval' : 926 # The maxval check does two things: it checks that the attribute value is 927 # an integer from 0 and up, without an excessive amount of zeroes or 928 # whitespace (to avoid Buffer Overflows). It also checks that the attribute 929 # value is not greater than the given value. 930 # This check can be used to avoid Denial of Service attacks. 931 932 if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value)) 933 $ok = false; 934 if ($value > $checkvalue) 935 $ok = false; 936 break; 937 938 case 'minval' : 939 # The minval check makes sure that the attribute value is a positive integer, 940 # and that it is not smaller than the given value. 941 942 if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value)) 943 $ok = false; 944 if ($value < $checkvalue) 945 $ok = false; 946 break; 947 948 case 'valueless' : 949 # The valueless check makes sure if the attribute has a value 950 # (like <a href="blah">) or not (<option selected>). If the given value 951 # is a "y" or a "Y", the attribute must not have a value. 952 # If the given value is an "n" or an "N", the attribute must have one. 953 954 if (strtolower($checkvalue) != $vless) 955 $ok = false; 956 break; 957 } # switch 958 959 return $ok; 960 } 961 962 /** 963 * Sanitize string from bad protocols. 964 * 965 * This function removes all non-allowed protocols from the beginning of 966 * $string. It ignores whitespace and the case of the letters, and it does 967 * understand HTML entities. It does its work in a while loop, so it won't be 968 * fooled by a string like "javascript:javascript:alert(57)". 969 * 970 * @since 1.0.0 971 * 972 * @param string $string Content to filter bad protocols from 973 * @param array $allowed_protocols Allowed protocols to keep 974 * @return string Filtered content 975 */ 976 function wp_kses_bad_protocol($string, $allowed_protocols) { 977 $string = wp_kses_no_null($string); 978 $iterations = 0; 979 980 do { 981 $original_string = $string; 982 $string = wp_kses_bad_protocol_once($string, $allowed_protocols); 983 } while ( $original_string != $string && ++$iterations < 6 ); 984 985 if ( $original_string != $string ) 986 return ''; 987 988 return $string; 989 } 990 991 /** 992 * Removes any null characters in $string. 993 * 994 * @since 1.0.0 995 * 996 * @param string $string 997 * @return string 998 */ 999 function wp_kses_no_null($string) { 1000 $string = preg_replace('/\0+/', '', $string); 1001 $string = preg_replace('/(\\\\0)+/', '', $string); 1002 1003 return $string; 1004 } 1005 1006 /** 1007 * Strips slashes from in front of quotes. 1008 * 1009 * This function changes the character sequence \" to just ". It leaves all 1010 * other slashes alone. It's really weird, but the quoting from 1011 * preg_replace(//e) seems to require this. 1012 * 1013 * @since 1.0.0 1014 * 1015 * @param string $string String to strip slashes 1016 * @return string Fixed string with quoted slashes 1017 */ 1018 function wp_kses_stripslashes($string) { 1019 return preg_replace('%\\\\"%', '"', $string); 1020 } 1021 1022 /** 1023 * Goes through an array and changes the keys to all lower case. 1024 * 1025 * @since 1.0.0 1026 * 1027 * @param array $inarray Unfiltered array 1028 * @return array Fixed array with all lowercase keys 1029 */ 1030 function wp_kses_array_lc($inarray) { 1031 $outarray = array (); 1032 1033 foreach ( (array) $inarray as $inkey => $inval) { 1034 $outkey = strtolower($inkey); 1035 $outarray[$outkey] = array (); 1036 1037 foreach ( (array) $inval as $inkey2 => $inval2) { 1038 $outkey2 = strtolower($inkey2); 1039 $outarray[$outkey][$outkey2] = $inval2; 1040 } # foreach $inval 1041 } # foreach $inarray 1042 1043 return $outarray; 1044 } 1045 1046 /** 1047 * Removes the HTML JavaScript entities found in early versions of Netscape 4. 1048 * 1049 * @since 1.0.0 1050 * 1051 * @param string $string 1052 * @return string 1053 */ 1054 function wp_kses_js_entities($string) { 1055 return preg_replace('%&\s*\{[^}]*(\}\s*;?|$)%', '', $string); 1056 } 1057 1058 /** 1059 * Handles parsing errors in wp_kses_hair(). 1060 * 1061 * The general plan is to remove everything to and including some whitespace, 1062 * but it deals with quotes and apostrophes as well. 1063 * 1064 * @since 1.0.0 1065 * 1066 * @param string $string 1067 * @return string 1068 */ 1069 function wp_kses_html_error($string) { 1070 return preg_replace('/^("[^"]*("|$)|\'[^\']*(\'|$)|\S)*\s*/', '', $string); 1071 } 1072 1073 /** 1074 * Sanitizes content from bad protocols and other characters. 1075 * 1076 * This function searches for URL protocols at the beginning of $string, while 1077 * handling whitespace and HTML entities. 1078 * 1079 * @since 1.0.0 1080 * 1081 * @param string $string Content to check for bad protocols 1082 * @param string $allowed_protocols Allowed protocols 1083 * @return string Sanitized content 1084 */ 1085 function wp_kses_bad_protocol_once($string, $allowed_protocols, $count = 1 ) { 1086 $string2 = preg_split( '/:|�*58;|�*3a;/i', $string, 2 ); 1087 if ( isset($string2[1]) && ! preg_match('%/\?%', $string2[0]) ) { 1088 $string = trim( $string2[1] ); 1089 $protocol = wp_kses_bad_protocol_once2( $string2[0], $allowed_protocols ); 1090 if ( 'feed:' == $protocol ) { 1091 if ( $count > 2 ) 1092 return ''; 1093 $string = wp_kses_bad_protocol_once( $string, $allowed_protocols, ++$count ); 1094 if ( empty( $string ) ) 1095 return $string; 1096 } 1097 $string = $protocol . $string; 1098 } 1099 1100 return $string; 1101 } 1102 1103 /** 1104 * Callback for wp_kses_bad_protocol_once() regular expression. 1105 * 1106 * This function processes URL protocols, checks to see if they're in the 1107 * whitelist or not, and returns different data depending on the answer. 1108 * 1109 * @access private 1110 * @since 1.0.0 1111 * 1112 * @param string $string URI scheme to check against the whitelist 1113 * @param string $allowed_protocols Allowed protocols 1114 * @return string Sanitized content 1115 */ 1116 function wp_kses_bad_protocol_once2( $string, $allowed_protocols ) { 1117 $string2 = wp_kses_decode_entities($string); 1118 $string2 = preg_replace('/\s/', '', $string2); 1119 $string2 = wp_kses_no_null($string2); 1120 $string2 = strtolower($string2); 1121 1122 $allowed = false; 1123 foreach ( (array) $allowed_protocols as $one_protocol ) 1124 if ( strtolower($one_protocol) == $string2 ) { 1125 $allowed = true; 1126 break; 1127 } 1128 1129 if ($allowed) 1130 return "$string2:"; 1131 else 1132 return ''; 1133 } 1134 1135 /** 1136 * Converts and fixes HTML entities. 1137 * 1138 * This function normalizes HTML entities. It will convert "AT&T" to the correct 1139 * "AT&T", ":" to ":", "&#XYZZY;" to "&#XYZZY;" and so on. 1140 * 1141 * @since 1.0.0 1142 * 1143 * @param string $string Content to normalize entities 1144 * @return string Content with normalized entities 1145 */ 1146 function wp_kses_normalize_entities($string) { 1147 # Disarm all entities by converting & to & 1148 1149 $string = str_replace('&', '&', $string); 1150 1151 # Change back the allowed entities in our entity whitelist 1152 1153 $string = preg_replace_callback('/&([A-Za-z]{2,8});/', 'wp_kses_named_entities', $string); 1154 $string = preg_replace_callback('/&#(0*[0-9]{1,7});/', 'wp_kses_normalize_entities2', $string); 1155 $string = preg_replace_callback('/&#[Xx](0*[0-9A-Fa-f]{1,6});/', 'wp_kses_normalize_entities3', $string); 1156 1157 return $string; 1158 } 1159 1160 /** 1161 * Callback for wp_kses_normalize_entities() regular expression. 1162 * 1163 * This function only accepts valid named entity references, which are finite, 1164 * case-sensitive, and highly scrutinized by HTML and XML validators. 1165 * 1166 * @since 3.0.0 1167 * 1168 * @param array $matches preg_replace_callback() matches array 1169 * @return string Correctly encoded entity 1170 */ 1171 function wp_kses_named_entities($matches) { 1172 global $allowedentitynames; 1173 1174 if ( empty($matches[1]) ) 1175 return ''; 1176 1177 $i = $matches[1]; 1178 return ( ( ! in_array($i, $allowedentitynames) ) ? "&$i;" : "&$i;" ); 1179 } 1180 1181 /** 1182 * Callback for wp_kses_normalize_entities() regular expression. 1183 * 1184 * This function helps wp_kses_normalize_entities() to only accept 16-bit values 1185 * and nothing more for &#number; entities. 1186 * 1187 * @access private 1188 * @since 1.0.0 1189 * 1190 * @param array $matches preg_replace_callback() matches array 1191 * @return string Correctly encoded entity 1192 */ 1193 function wp_kses_normalize_entities2($matches) { 1194 if ( empty($matches[1]) ) 1195 return ''; 1196 1197 $i = $matches[1]; 1198 if (valid_unicode($i)) { 1199 $i = str_pad(ltrim($i,'0'), 3, '0', STR_PAD_LEFT); 1200 $i = "&#$i;"; 1201 } else { 1202 $i = "&#$i;"; 1203 } 1204 1205 return $i; 1206 } 1207 1208 /** 1209 * Callback for wp_kses_normalize_entities() for regular expression. 1210 * 1211 * This function helps wp_kses_normalize_entities() to only accept valid Unicode 1212 * numeric entities in hex form. 1213 * 1214 * @access private 1215 * 1216 * @param array $matches preg_replace_callback() matches array 1217 * @return string Correctly encoded entity 1218 */ 1219 function wp_kses_normalize_entities3($matches) { 1220 if ( empty($matches[1]) ) 1221 return ''; 1222 1223 $hexchars = $matches[1]; 1224 return ( ( ! valid_unicode(hexdec($hexchars)) ) ? "&#x$hexchars;" : '&#x'.ltrim($hexchars,'0').';' ); 1225 } 1226 1227 /** 1228 * Helper function to determine if a Unicode value is valid. 1229 * 1230 * @param int $i Unicode value 1231 * @return bool True if the value was a valid Unicode number 1232 */ 1233 function valid_unicode($i) { 1234 return ( $i == 0x9 || $i == 0xa || $i == 0xd || 1235 ($i >= 0x20 && $i <= 0xd7ff) || 1236 ($i >= 0xe000 && $i <= 0xfffd) || 1237 ($i >= 0x10000 && $i <= 0x10ffff) ); 1238 } 1239 1240 /** 1241 * Convert all entities to their character counterparts. 1242 * 1243 * This function decodes numeric HTML entities (A and A). It doesn't do 1244 * anything with other entities like ä, but we don't need them in the URL 1245 * protocol whitelisting system anyway. 1246 * 1247 * @since 1.0.0 1248 * 1249 * @param string $string Content to change entities 1250 * @return string Content after decoded entities 1251 */ 1252 function wp_kses_decode_entities($string) { 1253 $string = preg_replace_callback('/&#([0-9]+);/', '_wp_kses_decode_entities_chr', $string); 1254 $string = preg_replace_callback('/&#[Xx]([0-9A-Fa-f]+);/', '_wp_kses_decode_entities_chr_hexdec', $string); 1255 1256 return $string; 1257 } 1258 1259 /** 1260 * Regex callback for wp_kses_decode_entities() 1261 * 1262 * @param array $match preg match 1263 * @return string 1264 */ 1265 function _wp_kses_decode_entities_chr( $match ) { 1266 return chr( $match[1] ); 1267 } 1268 1269 /** 1270 * Regex callback for wp_kses_decode_entities() 1271 * 1272 * @param array $match preg match 1273 * @return string 1274 */ 1275 function _wp_kses_decode_entities_chr_hexdec( $match ) { 1276 return chr( hexdec( $match[1] ) ); 1277 } 1278 1279 /** 1280 * Sanitize content with allowed HTML Kses rules. 1281 * 1282 * @since 1.0.0 1283 * @uses $allowedtags 1284 * 1285 * @param string $data Content to filter, expected to be escaped with slashes 1286 * @return string Filtered content 1287 */ 1288 function wp_filter_kses($data) { 1289 global $allowedtags; 1290 return addslashes( wp_kses(stripslashes( $data ), $allowedtags) ); 1291 } 1292 1293 /** 1294 * Sanitize content with allowed HTML Kses rules. 1295 * 1296 * @since 2.9.0 1297 * @uses $allowedtags 1298 * 1299 * @param string $data Content to filter, expected to not be escaped 1300 * @return string Filtered content 1301 */ 1302 function wp_kses_data($data) { 1303 global $allowedtags; 1304 return wp_kses( $data , $allowedtags ); 1305 } 1306 1307 /** 1308 * Sanitize content for allowed HTML tags for post content. 1309 * 1310 * Post content refers to the page contents of the 'post' type and not $_POST 1311 * data from forms. 1312 * 1313 * @since 2.0.0 1314 * @uses $allowedposttags 1315 * 1316 * @param string $data Post content to filter, expected to be escaped with slashes 1317 * @return string Filtered post content with allowed HTML tags and attributes intact. 1318 */ 1319 function wp_filter_post_kses($data) { 1320 global $allowedposttags; 1321 return addslashes ( wp_kses(stripslashes( $data ), $allowedposttags) ); 1322 } 1323 1324 /** 1325 * Sanitize content for allowed HTML tags for post content. 1326 * 1327 * Post content refers to the page contents of the 'post' type and not $_POST 1328 * data from forms. 1329 * 1330 * @since 2.9.0 1331 * @uses $allowedposttags 1332 * 1333 * @param string $data Post content to filter 1334 * @return string Filtered post content with allowed HTML tags and attributes intact. 1335 */ 1336 function wp_kses_post($data) { 1337 global $allowedposttags; 1338 return wp_kses( $data , $allowedposttags ); 1339 } 1340 1341 /** 1342 * Strips all of the HTML in the content. 1343 * 1344 * @since 2.1.0 1345 * 1346 * @param string $data Content to strip all HTML from 1347 * @return string Filtered content without any HTML 1348 */ 1349 function wp_filter_nohtml_kses($data) { 1350 return addslashes ( wp_kses(stripslashes( $data ), array()) ); 1351 } 1352 1353 /** 1354 * Adds all Kses input form content filters. 1355 * 1356 * All hooks have default priority. The wp_filter_kses() function is added to 1357 * the 'pre_comment_content' and 'title_save_pre' hooks. 1358 * 1359 * The wp_filter_post_kses() function is added to the 'content_save_pre', 1360 * 'excerpt_save_pre', and 'content_filtered_save_pre' hooks. 1361 * 1362 * @since 2.0.0 1363 * @uses add_filter() See description for what functions are added to what hooks. 1364 */ 1365 function kses_init_filters() { 1366 // Normal filtering. 1367 add_filter('pre_comment_content', 'wp_filter_kses'); 1368 add_filter('title_save_pre', 'wp_filter_kses'); 1369 1370 // Post filtering 1371 add_filter('content_save_pre', 'wp_filter_post_kses'); 1372 add_filter('excerpt_save_pre', 'wp_filter_post_kses'); 1373 add_filter('content_filtered_save_pre', 'wp_filter_post_kses'); 1374 } 1375 1376 /** 1377 * Removes all Kses input form content filters. 1378 * 1379 * A quick procedural method to removing all of the filters that kses uses for 1380 * content in WordPress Loop. 1381 * 1382 * Does not remove the kses_init() function from 'init' hook (priority is 1383 * default). Also does not remove kses_init() function from 'set_current_user' 1384 * hook (priority is also default). 1385 * 1386 * @since 2.0.6 1387 */ 1388 function kses_remove_filters() { 1389 // Normal filtering. 1390 remove_filter('pre_comment_content', 'wp_filter_kses'); 1391 remove_filter('title_save_pre', 'wp_filter_kses'); 1392 1393 // Post filtering 1394 remove_filter('content_save_pre', 'wp_filter_post_kses'); 1395 remove_filter('excerpt_save_pre', 'wp_filter_post_kses'); 1396 remove_filter('content_filtered_save_pre', 'wp_filter_post_kses'); 1397 } 1398 1399 /** 1400 * Sets up most of the Kses filters for input form content. 1401 * 1402 * If you remove the kses_init() function from 'init' hook and 1403 * 'set_current_user' (priority is default), then none of the Kses filter hooks 1404 * will be added. 1405 * 1406 * First removes all of the Kses filters in case the current user does not need 1407 * to have Kses filter the content. If the user does not have unfiltered_html 1408 * capability, then Kses filters are added. 1409 * 1410 * @uses kses_remove_filters() Removes the Kses filters 1411 * @uses kses_init_filters() Adds the Kses filters back if the user 1412 * does not have unfiltered HTML capability. 1413 * @since 2.0.0 1414 */ 1415 function kses_init() { 1416 kses_remove_filters(); 1417 1418 if (current_user_can('unfiltered_html') == false) 1419 kses_init_filters(); 1420 } 1421 1422 add_action('init', 'kses_init'); 1423 add_action('set_current_user', 'kses_init'); 1424 1425 /** 1426 * Inline CSS filter 1427 * 1428 * @since 2.8.1 1429 */ 1430 function safecss_filter_attr( $css, $deprecated = '' ) { 1431 if ( !empty( $deprecated ) ) 1432 _deprecated_argument( __FUNCTION__, '2.8.1' ); // Never implemented 1433 1434 $css = wp_kses_no_null($css); 1435 $css = str_replace(array("\n","\r","\t"), '', $css); 1436 1437 if ( preg_match( '%[\\(&=}]|/\*%', $css ) ) // remove any inline css containing \ ( & } = or comments 1438 return ''; 1439 1440 $css_array = explode( ';', trim( $css ) ); 1441 $allowed_attr = apply_filters( 'safe_style_css', array( 'text-align', 'margin', 'color', 'float', 1442 'border', 'background', 'background-color', 'border-bottom', 'border-bottom-color', 1443 'border-bottom-style', 'border-bottom-width', 'border-collapse', 'border-color', 'border-left', 1444 'border-left-color', 'border-left-style', 'border-left-width', 'border-right', 'border-right-color', 1445 'border-right-style', 'border-right-width', 'border-spacing', 'border-style', 'border-top', 1446 'border-top-color', 'border-top-style', 'border-top-width', 'border-width', 'caption-side', 1447 'clear', 'cursor', 'direction', 'font', 'font-family', 'font-size', 'font-style', 1448 'font-variant', 'font-weight', 'height', 'letter-spacing', 'line-height', 'margin-bottom', 1449 'margin-left', 'margin-right', 'margin-top', 'overflow', 'padding', 'padding-bottom', 1450 'padding-left', 'padding-right', 'padding-top', 'text-decoration', 'text-indent', 'vertical-align', 1451 'width' ) ); 1452 1453 if ( empty($allowed_attr) ) 1454 return $css; 1455 1456 $css = ''; 1457 foreach ( $css_array as $css_item ) { 1458 if ( $css_item == '' ) 1459 continue; 1460 $css_item = trim( $css_item ); 1461 $found = false; 1462 if ( strpos( $css_item, ':' ) === false ) { 1463 $found = true; 1464 } else { 1465 $parts = explode( ':', $css_item ); 1466 if ( in_array( trim( $parts[0] ), $allowed_attr ) ) 1467 $found = true; 1468 } 1469 if ( $found ) { 1470 if( $css != '' ) 1471 $css .= ';'; 1472 $css .= $css_item; 1473 } 1474 } 1475 1476 return $css; 1477 }
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