/**
* Add a javascript ban action icon after each url in the given content
*
* @param string Comment content
* @return string the content with a ban icon after each url if the user has spamblacklist permission, the incoming content otherwise
*/
function add_ban_icons($content)
{
global $current_User;
if (!$current_User->check_perm('spamblacklist', 'edit')) {
return $content;
}
$atags = get_atags($content);
$imgtags = get_imgtags($content);
$urls = get_urls($content);
$result = '';
$from = 0;
// current processing position
$length = 0;
// current url or tag length
$i = 0;
// url counter
$j = 0;
// "a" tag counter
$k = 0;
// "img" tag counter
while (isset($urls[$i])) {
// there is unprocessed url
$url = $urls[$i];
if (validate_url($url, 'posting', false)) {
// skip not valid urls
$i++;
continue;
}
while (isset($imgtags[$k]) && strpos($content, $imgtags[$k]) < $from) {
// skipp already passed img tags
$k++;
}
$pos = strpos($content, $url, $from);
$length = evo_strlen($url);
$i++;
// check img tags
if (isset($imgtags[$k]) && strpos($imgtags[$k], $url) !== false && $pos > strpos($content, $imgtags[$k], $from)) {
// current url is inside the img tag, we need to skip this url.
$result .= substr($content, $from, $pos + $length - $from);
$from = $pos + $length;
$k++;
continue;
}
// check a tags
if (isset($atags[$j])) {
// there is unprocessed "a" tag
$tag = $atags[$j];
if (($urlpos = strpos($tag, $url)) !== false && $pos > strpos($content, $tag, $from)) {
// the url is inside the current tag, we have to add ban icon after the tag
$pos = strpos($content, $tag, $from);
$length = strlen($tag);
while (isset($urls[$i]) && ($urlpos = strpos($tag, $urls[$i], $urlpos + 1)) !== false) {
// skip all other urls from this tag
$i++;
}
$j++;
}
}
// add processed part and ban icon to result and set current position
$result .= substr($content, $from, $pos + $length - $from);
$from = $pos + $length;
$result .= add_jsban($url);
}
// add the end of the content to the result
$result .= substr($content, $from, strlen($content) - $from);
return $result;
}
/**
* Callback function to add a javascript ban action icon after each url in the given content
*
* @param string Comment content
* @return string the content with a ban icon after each url if the user has spamblacklist permission, the incoming content otherwise
*/
function add_ban_icons_callback($content)
{
$atags = get_atags($content);
$imgtags = get_imgtags($content);
$urls = get_urls($content);
$result = '';
$from = 0;
// current processing position
$length = 0;
// current url or tag length
$i = 0;
// url counter
$j = 0;
// "a" tag counter
$k = 0;
// "img" tag counter
// Remove the duplicated <a> tags from array
$atags_fixed = array();
foreach ($atags as $atag) {
if (preg_match('#href="([^"]+)"#', $atag, $matches) && !isset($atags_fixed[$matches[1]])) {
$atags_fixed[$matches[1]] = $atag;
}
}
$atags = array();
foreach ($atags_fixed as $atag) {
$atags[] = $atag;
}
$used_urls = array();
while (isset($urls[$i])) {
// there is unprocessed url
$url = $urls[$i];
if (validate_url($url, 'posting', false)) {
// skip not valid urls
$i++;
continue;
}
if (in_array($url, $used_urls)) {
// skip already passed url
$i++;
continue;
}
$used_urls[] = $url;
while (isset($imgtags[$k]) && strpos($content, $imgtags[$k]) < $from) {
// skip already passed img tags
$k++;
}
$pos = strpos($content, $url, $from);
$length = utf8_strlen($url);
$i++;
// check img tags
if (isset($imgtags[$k]) && strpos($imgtags[$k], $url) !== false && $pos > strpos($content, $imgtags[$k], $from)) {
// current url is inside the img tag, we need to skip this url.
$result .= substr($content, $from, $pos + $length - $from);
$from = $pos + $length;
$k++;
continue;
}
// check a tags
if (isset($atags[$j])) {
// there is unprocessed "a" tag
$tag = $atags[$j];
if (($urlpos = strpos($tag, $url)) !== false && $pos > strpos($content, $tag, $from)) {
// the url is inside the current tag, we have to add ban icon after the tag
$pos = strpos($content, $tag, $from);
$length = strlen($tag);
while (isset($urls[$i]) && ($urlpos = strpos($tag, $urls[$i], $urlpos + 1)) !== false) {
// skip all other urls from this tag
$i++;
}
$j++;
}
}
// add processed part and ban icon to result and set current position
$result .= substr($content, $from, $pos + $length - $from);
$from = $pos + $length;
$result .= add_jsban($url);
}
// add the end of the content to the result
$result .= substr($content, $from, strlen($content) - $from);
return $result;
}
