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<?php
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// $Id: bbcode-filter.inc,v 1.65 2008/01/27 16:50:12 naudefj Exp $
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function _bbcode_filter_process(&$body, $format = -1) {
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$quote_text = t('Quote:');
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$quote_user = t('\\1 wrote:');
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// Encode all script tags to prevent XSS html injection attacks
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$body = preg_replace(array('#<script([^>]*)>#i', '#</script([^>]*)>#i'), array('<script\\1>', '</script\\1>'), $body);
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// Find all [code] tags and check if they contain a newline. If we find a newline,
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// that [code] should be rendered as a block, otherwise it will still be inline
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$mode = variable_get("bbcode_paragraph_breaks_$format", 2);
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$pre = array(); $i = 0;
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if (preg_match_all('#\[code(?::\w+)?\](.*?)\[/code(?::\w+)?\]#si', $body, $code_tags, PREG_SET_ORDER)) {
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foreach ($code_tags as $code_tag) {
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$code_tag[1] = str_replace(array('<', '>'), array('<', '>'), $code_tag[1]);
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if (strpos($code_tag[1], "\n") === FALSE)
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$body = str_replace($code_tag[0], '<code class="bb-code">'. $code_tag[1] .'</code>', $body);
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elseif ($mode) {
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// Strip preformatted code blocks from text during line break processing, replaced below
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$body = str_replace($code_tag[0], "***pRe_sTrInG$i***", $body);
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$pre[$i++] = '<pre class="bb-code-block">'. $code_tag[1] .'</pre>';
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}
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else
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$body = str_replace($code_tag[0], '<pre class="bb-code-block">'. $code_tag[1] .'</pre>', $body);
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}
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}
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// Apply line and paragraph breaks (skipping preformatted code)
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if ($mode) {
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if ($mode == 1) // Line breaks only (starting with PHP 4.0.5, nl2br() is XHTML compliant)
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$body = nl2br($body);
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if ($mode == 2) { // Line and paragraph breaks (may not always be XHTML compliant)
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$body = preg_replace("/(\r\n|\n|\r)/", "\n", $body);
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$body = preg_replace("/\n\n+/", "\n\n", $body);
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$parts = explode("\n\n", $body);
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for ($i=0; $i<sizeof($parts); $i++) {
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// No linebreaks if paragraph starts with an HTML tag
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if ( !preg_match('/^<.*>/', $parts[$i]) )
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$parts[$i] = nl2br($parts[$i]);
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// Some tags should not be in paragraph blocks
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if ( !preg_match('/^(?:<|\[)(?:table|list|ol|ul|pre|select|form|blockquote|hr)/i', $parts[$i]) )
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$parts[$i] = '<p>'. $parts[$i] .'</p>';
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}
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$body = implode("\n\n", $parts);
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}
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// Reinsert preformatted code blocks
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foreach ($pre as $i => $code_tag)
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$body = str_replace("***pRe_sTrInG$i***", $code_tag, $body);
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}
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// Add closing tags to prevent users from disruping your site's HTML
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// (required for nestable tags only: [list] and [quote])
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preg_match_all('/\[quote/i', $body, $matches);
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$opentags = count($matches['0']);
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preg_match_all('/\[\/quote\]/i', $body, $matches);
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$unclosed = $opentags - count($matches['0']);
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for ($i = 0; $i < $unclosed; $i++)
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$body .= '[/quote]';
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preg_match_all('/\[list/i', $body, $matches);
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$opentags = count($matches['0']);
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preg_match_all('/\[\/list\]/i', $body, $matches);
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$unclosed = $opentags - count($matches['0']);
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for ($i = 0; $i < $unclosed; $i++)
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$body .= '[/list]';
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// begin processing for [size]
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if (stristr($body, '[size=') !== FALSE) { // prevent useless processing
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$arr = array(
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'tag' => 'size',
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'pattern' => '#\[\x07=([\d]+)(?::\w+)?\]([^\x07]*)\[/\x07(?::\w+)?\]#esi',
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'replacement' => '"<span style=\"font-size:". _bbcode_round_size_val(\'$1\') ."px\">". str_replace(\'\"\', \'"\', \'$2\') ."</span>"',
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'text' => $body);
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$body = _bbcode_replace_nest_tag($arr);
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} // end processing for [size]
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// begin processing for [color]
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if (stristr($body, '[color=') !== FALSE) { // prevent useless processing
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$arr = array(
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'tag' => 'color',
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'pattern' => '#\[\x07=([\#\w]+)(?::\w+)?\]([^\x07]*)\[/\x07(?::\w+)?\]#si',
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'replacement' => '<span style="color:$1">$2</span>',
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'text' => $body);
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$body = _bbcode_replace_nest_tag($arr);
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} // end processing for [color]
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// begin processing for [font]
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if (stristr($body, '[font=') !== FALSE) { // prevent useless processing
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$arr = array(
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'tag' => 'font',
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'pattern' => '#\[\x07=([\w\s]+)(?::\w+)?\]([^\x07]*)\[/\x07(?::\w+)?\]#si',
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'replacement' => '<span style="font-family:$1">$2</span>',
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'text' => $body);
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$body = _bbcode_replace_nest_tag($arr);
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} // end processing for [font]
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// begin processing for [list] and [*]
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if (stristr($body, '[list') !== FALSE) { // prevent useless processing
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$l_type = array(
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NULL => array('style' => 'circle', 'tag' => 'ul'),
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'c' => array('style' => 'circle', 'tag' => 'ul'),
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'd' => array('style' => 'disc', 'tag' => 'ul'),
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's' => array('style' => 'square', 'tag' => 'ul'),
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'1' => array('style' => 'decimal', 'tag' => 'ol'),
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'a' => array('style' => 'lower-alpha', 'tag' => 'ol'),
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'A' => array('style' => 'upper-alpha', 'tag' => 'ol'),
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'i' => array('style' => 'lower-roman', 'tag' => 'ol'),
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'I' => array('style' => 'upper-roman', 'tag' => 'ol')
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);
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$body = preg_replace('#(\[[/]*)list(.*?\])#si', "$1\x07$2", $body);
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// replace to <li> tags - [*]..[*]|[*]..[/list]
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$body = preg_replace('#\[\*(?::\w+)?\]([^\x07]*?)(?=\s*?(\[\*(?::\w+)?\]|\[/\x07(?::\w+)?\]))#si', '<li>$1</li>', $body);
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// add </li> tags to nested <li> - [/list]..[/list]
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$body = preg_replace('#(\[/\x07(?::\w+)?\])(?=[^\x07]*?\[/\x07(?::\w+)?\])#si', '$1</li>', $body);
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// add </li> tags to nested <li> - [/list]..[*]..[list]
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$body = preg_replace('#(\[/\x07(?::\w+)?\])(?=[^\x07]*?\[\*(?::\w+)?\][^\x07]*?\[\x07.*(?::\w+)?\])#si', '$1</li>', $body);
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// replace to <li> tags for nested <li> - [*]..[list]
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$body = preg_replace('#\[\*(?::\w+)?\]([^\x07]*)?(?=\[\x07.*(?::\w+)?\])#si', '<li>$1', $body);
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// replace to <ol>/<ul> and </ol>/</ul> tags
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// It will be better to use &count and do-while, if php 5 or higher.
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while (preg_match("#\[\x07[=]*((?-i)[cds1aAiI])*(?::\w+)?\]([^\x07]*)\[/\x07(?::\w+)?\]#si", $body)) {
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$body = preg_replace("#\[\x07[=]*((?-i)[cds1aAiI])*(?::\w+)?\]([^\x07]*)\[/\x07(?::\w+)?\]#esi", '"<". $l_type[\'$1\']["tag"] ." class=\"bb-list\" style=\"list-style-type:". $l_type[\'$1\']["style"] .";\">". str_replace(\'\"\', \'"\', \'$2\') ."</". $l_type[\'$1\']["tag"] .">"', $body);
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}
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// remove <br /> tags
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$body = preg_replace('#(<[/]*([uo]l|li).*>.*)<br />#i', '$1', $body);
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} // end processing for [list] and [*]
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// Define BBCode tags
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$preg = array(
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// Implement [notag]
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'#\[notag(?::\w+)?\](.*?)\[/notag(?::\w+)?\]#sie' => '_bbcode_notag_tag(\'\\1\')',
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// Headings and indexes - articles will almost always need them
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'#\[h([1-6])(?::\w+)?\](.*?)\[/h[1-6](?::\w+)?\]#sie' => '_bbcode_generate_heading(\\1, \'\\2\')',
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'#\[index\s*/?\]#sie' => '_bbcode_generate_index($body)',
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'#\[index style=(ol|ul)\]#sie' => '_bbcode_generate_index($body, \'\\1\')',
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// Font, text and alignment
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'#\[align=(\w+)(?::\w+)?\](.*?)\[/align(?::\w+)?\]#si' => '<span style="text-align:\\1">\\2</span>',
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'#\[float=(left|right)(?::\w+)?\](.*?)\[/float(?::\w+)?\]#si' => '<span style="float:\\1">\\2</span>',
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'#\[justify(?::\w+)?\](.*?)\[/justify(?::\w+)?\]#si' => '<div style="text-align:justify;">\\1</div>',
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'#\[(b|strong)(?::\w+)?\](.*?)\[/(b|strong)(?::\w+)?\]#si' => '<span style="font-weight:bold">\\2</span>',
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'#\[(i|em)(?::\w+)?\](.*?)\[/(i|em)(?::\w+)?\]#si' => '<span style="font-style:italic">\\2</span>',
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'#\[u(?::\w+)?\](.*?)\[/u(?::\w+)?\]#si' => '<span style="text-decoration:underline">\\1</span>',
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'#\[s(?::\w+)?\](.*?)\[/s(?::\w+)?\]#si' => '<s>\\1</s>',
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'#\[sup(?::\w+)?\](.*?)\[/sup(?::\w+)?\]#si' => '<sup>\\1</sup>',
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'#\[sub(?::\w+)?\](.*?)\[/sub(?::\w+)?\]#si' => '<sub>\\1</sub>',
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'#\[center(?::\w+)?\](.*?)\[/center(?::\w+)?\]#si' => '<div style="text-align:center">\\1</div>',
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'#\[left(?::\w+)?\](.*?)\[/left(?::\w+)?\]#si' => '<div style="text-align:left">\\1</div>',
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'#\[right(?::\w+)?\](.*?)\[/right(?::\w+)?\]#si' => '<div style="text-align:right">\\1</div>',
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// Links without a protocol, with a protocol, and with good looking text
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'#\[url(?::\w+)?\]www\.([\w:;&,%+~!=@\/\.\-\#\?]+?)\[/url(?::\w+)?\]#si' => '<a href="http://www.\\1" class="bb-url">\\1</a>',
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'#\[url(?::\w+)?\]([\w:;&,%+~!=@\/\.\-\#\?]+?)\[/url(?::\w+)?\]#si' => '<a href="\\1" class="bb-url">\\1</a>',
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'#\[url=www\.([\w:;&,%+~!=@\/\.\-\#\?]+?)\](.*?)\[/url(?::\w+)?\]#si' => '<a href="http://www.\\1" class="bb-url">\\2</a>',
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'#\[url=([\w:;&,%+~!=@\/\.\-\#\?]+?)\](.*?)\[/url(?::\w+)?\]#si' => '<a href="\\1" class="bb-url">\\2</a>',
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// Anchor tags for linking within documents
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'#\[anchor=(\w+)(?::\w+)?\](.*?)\[/anchor(?::\w+)?\]#si' => '<a name="\\1">\\2</a>',
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// Images without or with client-side sizing
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'#\[img(?::\w+)?\]([\w:;&,~%+!=@\/\.\-\#\?]+)\[/img(?::\w+)?\]#si' => '<img src="\\1" alt="" class="bb-image" />',
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'#\[img=(\d+)x(\d+)(?::\w+)?\]([\w:;&,~%+!=@\/\.\-\#\?]+)\[/img(?::\w+)?\]#si' => '<img width="\\1" height="\\2" alt="" src="\\3" class="bb-image" />',
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'#\[img=([\w\s:;,\.\-\'\(\)]+)(?::\w+)?\]([\w:;&,~%+!=@\/\.\-\#\?]+)\[/img(?::\w+)?\]#si' => '<img alt="\\1" src="\\2" class="bb-image" />',
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'#\[img align=(left|right|center)(?::\w+)?\]([\w:;&,~%+!=@\/\.\-\#\?]+)\[/img(?::\w+)?\]#si' => '<img src="\\2" alt="" align="\\1" class="bb-image" />',
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// Flash animations and other special effects
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'#\[flash=(\d+)x(\d+)(?::\w+)?\]([\w:;&,~%+!=@\/\.\-\#\?]+)\[/flash(?::\w+)?\]#si' => '<object type="application/x-shockwave-flash" data="\\3" width="\\1" height="\\2"><param name="movie" value="\\3" /></object>',
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// Acronyms & abbreviations - show description when mouse moves over tag
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'#\[acronym=([\w\s-,\.]+)(?::\w+)?\](.*?)\[/acronym(?::\w+)?\]#si' => '<acronym title="\\1">\\2</acronym>',
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'#\[abbr=([\w\s-,\.]+)(?::\w+)?\](.*?)\[/abbr(?::\w+)?\]#si' => '<abbr title="\\1">\\2</abbr>',
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// Quoting with or without specifying the source
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'#\[quote(?::\w+)?\]#i' => '<div class="bb-quote">'.$quote_text.'<blockquote class="bb-quote-body">',
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'#\[quote=(?:"|"|\')?(.*?)["\']?(?:"|"|\')?\]#i' => '<div class="bb-quote"><b>'.$quote_user.'</b><blockquote class="bb-quote-body">',
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'#\[/quote(?::\w+)?\]#si' => '</blockquote></div>',
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// PHP code blocks (syntax highlighted)
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'#\[php(?::\w+)?\](?:[\r\n])*(.*?)\[/php(?::\w+)?\]#sie' => '_bbcode_php_tag(\'\\1\')',
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// Links to popular sites
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'#\[google(?::\w+)?\]([\w\s-]+?)\[/google(?::\w+)?\]#si' => '<a href="http://www.google.com/search?q=\\1">\\1</a>',
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'#\[wikipedia(?::\w+)?\]([\w\s-]+?)\[/wikipedia(?::\w+)?\]#si' => '<a href="http://www.wikipedia.org/wiki/\\1">\\1</a>',
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'#\[youtube\]([0-9a-zA-Z_\-]+)\[/youtube\]#si' => '<object width="425" height="366"><param name="movie" value="http://www.youtube.com/v/\\1"></param><embed src="http://www.youtube.com/v/\\1" type="application/x-shockwave-flash" width="425" height="366"></embed></object>',
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// Table tags
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'#\[table\](.+?)\[/table\]#si' => '<table class="bb-table">\\1</table>',
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'#\[(row|r|tr)\](.+?)\[/(row|r|tr)\]#si' => '<tr>\\2</tr>',
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'#\[(row|r|tr) color=([\#\w]+)\](.+?)\[/(row|r|tr)\]#si' => '<tr bgcolor=\\2>\\3</tr>',
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'#\[(header|head|h)\](.+?)\[/(header|head|h)\]#si' => '<th>\\2</th>',
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'#\[(col|c|td)\](.+?)\[/(col|c|td)\]#si' => '<td valign="top">\\2</td>',
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// Cleanup table output (td, th and tr tags)
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'#<([\/]?)t([dhr])><br />#si' => '<\\1t\\2>',
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'#<table(.+?)><br />#si' => '<table\\1>',
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);
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$body = preg_replace(array_keys($preg), array_values($preg), $body);
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// Simple replacements (str_replace is faster than preg_replace)
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$str = array(
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// Horizontal delimiter
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'[hr]' => '<hr class="bb-hr" />',
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// Force line break
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'[br]' => '<br class="bb-br" />',
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// Force space
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'[sp]' => ' ',
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);
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$body = str_replace(array_keys($str), array_values($str), $body);
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// We cannot evaluate the variable in callback function because
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// there is no way to pass the $format variable
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if (variable_get("bbcode_encode_mailto_$format", 1)) {
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// Replacing email addresses with encoded html
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$body = preg_replace_callback('#\[email(?::\w+)?\]([\w\.\-\+~@]+)\[/email(?::\w+)?\]#si', '_bbcode_encode_mailto', $body);
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$body = preg_replace_callback('#\[email=(.*?)(?::\w+)?\](.*?)\[/email(?::\w+)?\]#si', '_bbcode_encode_mailto', $body);
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}
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else {
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$body = preg_replace(
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array('#\[email(?::\w+)?\](.*?)\[/email(?::\w+)?\]#si','#\[email=(.*?)(?::\w+)?\]([\w\s]+)\[/email(?::\w+)?\]#si'),
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array('<a href="mailto:\\1" class="bb-email">\\1</a>', '<a href="mailto:\\1" class="bb-email">\\2</a>'),
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$body);
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}
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| 234 |
// Turns web and e-mail addresses into clickable links
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| 235 |
if (variable_get("bbcode_make_links_$format", 1)) {
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// pad with a space so we can match things at the start of the 1st line
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$ret = ' ' . $body;
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// padding to already filtered links
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| 240 |
$ret = preg_replace('#(<a.+>)(.+</a>)#i', "$1\x07$2", $ret);
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| 241 |
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| 242 |
// matches an "xxx://yyyy" URL at the start of a line, or after a space.
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| 243 |
// xxxx can only be alpha characters.
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// yyyy is anything up to the first space, newline, comma, double quote or <
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| 245 |
$ret = preg_replace('#(?<=^|[\t\r\n >\(\[\]\|])([a-z]+?://[\w\-]+\.([\w\-]+\.)*\w+(:[0-9]+)?(/[^ "\'\(\n\r\t<\)\[\]\|]*)?)((?<![,\.])|(?!\s))#i', '<a href="\1">\1</a>', $ret);
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// matches a "www|ftp.xxxx.yyyy[/zzzz]" kinda lazy URL thing
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// Must contain at least 2 dots. xxxx contains either alphanum, or "-"
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// zzzz is optional.. will contain everything up to the first space, newline,
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// comma, double quote or <.
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$ret = preg_replace('#([\t\r\n >\(\[\|])(www|ftp)\.(([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^ \"\'\(\n\r\t<\)\[\]\|]*)?)#i', '\1<a href="http://\2.\3">\2.\3</a>', $ret);
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// matches an email@domain type address at the start of a line, or after a space.
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// Note: Only the followed chars are valid; alphanums, "-", "_" and or ".".
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| 255 |
if (variable_get("bbcode_encode_mailto_$format", 1))
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$ret = preg_replace_callback("#([\t\r\n ])([a-z0-9\-_.]+?)@([\w\-]+\.([\w\-\.]+\.)*[\w]+)#i", '_bbcode_encode_mailto', $ret);
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else
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$ret = preg_replace('#([\t\r\n ])([a-z0-9\-_.]+?)@([\w\-]+\.([\w\-\.]+\.)*[\w]+)#i', '\\1<a href="mailto:\\2@\\3">\\2@\\3</a>', $ret);
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// Remove our padding
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$ret = str_replace("\x07", '', $ret);
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$body = substr($ret, 1);
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}
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if (variable_get("bbcode_filter_nofollow_$format", 0)) {
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$body = preg_replace('#<a([^>]+)>#i', '<a\\1 rel="nofollow">', $body);
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}
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| 269 |
return $body;
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}
|
| 271 |
|
| 272 |
function _bbcode_generate_heading($level, $text) {
|
| 273 |
$anchor = preg_replace('/([\s]+)/', '_', $text);
|
| 274 |
$anchor = preg_replace('/([\W]+)/', '', $anchor);
|
| 275 |
return '<h'. $level .'><a name="'. $anchor .'">'. $text .'</a></h'. $level .'>';
|
| 276 |
}
|
| 277 |
|
| 278 |
function _bbcode_generate_index($body, $tag = 'ol') {
|
| 279 |
$level = 0;
|
| 280 |
$index = '<'. $tag .">\n";
|
| 281 |
$close_tags = 0;
|
| 282 |
|
| 283 |
if (preg_match_all('#\[h([1-6]).*?\](.*?)\[/h([1-6]).*?\]#si', $body, $head_tags, PREG_SET_ORDER)) {
|
| 284 |
foreach ($head_tags as $head_tag) {
|
| 285 |
if ($level == 0) $level = $head_tag[1];
|
| 286 |
$anchor = preg_replace('/([\s]+)/', '_', $head_tag[2]);
|
| 287 |
$anchor = preg_replace('/([\W]+)/', '', $anchor);
|
| 288 |
|
| 289 |
if ($head_tag[1] > $level) {
|
| 290 |
$index .= '<'. $tag .">\n";
|
| 291 |
$index .= '<li><a href="#'. $anchor .'">'. $head_tag[2] ."</a>\n";
|
| 292 |
$close_tags++;
|
| 293 |
$level = $head_tag[1];
|
| 294 |
} else if ($head_tag[1] < $level) {
|
| 295 |
while ($close_tags > 0) {
|
| 296 |
$index .= '</'. $tag .">\n";
|
| 297 |
$close_tags--;
|
| 298 |
}
|
| 299 |
$index .= '<li><a href="#'. $anchor .'">'. $head_tag[2] ."</a>\n";
|
| 300 |
$level = $head_tag[1];
|
| 301 |
} else {
|
| 302 |
$index .= '<li><a href="#'. $anchor .'">'. $head_tag[2] ."</a>\n";
|
| 303 |
$level = $head_tag[1];
|
| 304 |
}
|
| 305 |
}
|
| 306 |
}
|
| 307 |
while ($close_tags >= 0) {
|
| 308 |
$index .= '</'. $tag .">\n";
|
| 309 |
$close_tags--;
|
| 310 |
}
|
| 311 |
return $index;
|
| 312 |
}
|
| 313 |
|
| 314 |
function _bbcode_encode_mailto($matches) {
|
| 315 |
if (isset($matches[3]))
|
| 316 |
$link = 'document.write(\'<a href="mailto:' . $matches[2].'@'.$matches[3] . '">' . $matches[2].'@'.$matches[3] . '</a>\');';
|
| 317 |
else
|
| 318 |
$link = 'document.write(\'<a href="mailto:' . $matches[1] . '" class="bb-email">' . (isset($matches[2]) ? $matches[2] : $matches[1]) . '</a>\');';
|
| 319 |
|
| 320 |
$js_encode = '';
|
| 321 |
for ($x = 0; $x < strlen($link); $x++)
|
| 322 |
$js_encode .= '%' . bin2hex($link{$x});
|
| 323 |
|
| 324 |
$link = '<script type="text/javascript">eval(unescape(\''.$js_encode.'\'))</script>';
|
| 325 |
if (isset($matches[3]))
|
| 326 |
$link = $matches[1] . $link;
|
| 327 |
|
| 328 |
return $link;
|
| 329 |
}
|
| 330 |
|
| 331 |
function _bbcode_notag_tag($text = NULL) {
|
| 332 |
return str_replace( array('[', ']', '@'), array('[', ']', '@'), stripslashes($text));
|
| 333 |
}
|
| 334 |
|
| 335 |
function _bbcode_php_tag($text = NULL) {
|
| 336 |
return '<pre>'. highlight_string( str_replace('<br />', '', stripslashes($text)), true) .'</pre>';
|
| 337 |
}
|
| 338 |
|
| 339 |
function _bbcode_round_size_val($size) {
|
| 340 |
if ($size < 6)
|
| 341 |
return 6;
|
| 342 |
elseif ($size > 48)
|
| 343 |
return 48;
|
| 344 |
else
|
| 345 |
return $size;
|
| 346 |
}
|
| 347 |
|
| 348 |
function _bbcode_replace_nest_tag($arr = NULL) {
|
| 349 |
$text = preg_replace('#(\[[/]*)'. $arr['tag'] .'(.*?\])#si', "$1\x07$2", $arr['text']);
|
| 350 |
// It will be better to use &count and do-while, if php 5 or higher.
|
| 351 |
while (preg_match($arr['pattern'], $text)) {
|
| 352 |
$text = preg_replace($arr['pattern'], $arr['replacement'], $text);
|
| 353 |
}
|
| 354 |
return $text;
|
| 355 |
}
|
| 356 |
|
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