rss-bridge/lib/HTMLUtils.php

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<?php
class HTMLUtils {
public static function displayBridgeCard($bridgeName, $formats, $isActive = true){
$bridgeElement = Bridge::create($bridgeName);
$bridgeClass=$bridgeName.'Bridge';
if($bridgeElement == false)
return "";
$name = '<a href="' . $bridgeClass::URI . '">' . $bridgeClass::NAME . '</a>';
$description = $bridgeClass::DESCRIPTION;
$card = <<<CARD
<section id="bridge-{$bridgeName}" data-ref="{$bridgeName}">
<h2>{$name}</h2>
<p class="description">
{$description}
</p>
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<input type="checkbox" class="showmore-box" id="showmore-{$bridgeName}" />
<label class="showmore" for="showmore-{$bridgeName}">Show more</label>
CARD;
// If we don't have any parameter for the bridge, we print a generic form to load it.
if(count($bridgeClass::PARAMETERS) == 0) {
$card .= HTMLUtils::getFormHeader($bridgeName);
if ($isActive){
if(defined('PROXY_URL') && PROXY_BYBRIDGE){
$idArg = 'arg-' . urlencode($bridgeName) . '-' . urlencode('proxyoff') . '-' . urlencode('_noproxy');
$card .= '<input id="' . $idArg . '" type="checkbox" name="_noproxy" />' . PHP_EOL;
$card .= '<label for="' .$idArg. '">Disable proxy ('.((defined('PROXY_NAME') && PROXY_NAME)?PROXY_NAME:PROXY_URL).')</label><br />' . PHP_EOL;
}
$card .= HTMLUtils::getHelperButtonsFormat($formats);
} else {
$card .= '<span style="font-weight: bold;">Inactive</span>';
}
$card .= '</form>' . PHP_EOL;
}
$hasGlobalParameter = array_key_exists('global', $bridgeClass::PARAMETERS);
if($hasGlobalParameter){
$globalParameters = $bridgeClass::PARAMETERS['global'];
}
foreach($bridgeClass::PARAMETERS as $parameterName => $parameter){
if(!is_numeric($parameterName) && $parameterName == 'global')
continue;
if($hasGlobalParameter)
$parameter = array_merge($parameter, $globalParameters);
if(!is_numeric($parameterName))
$card .= '<h5>' . $parameterName . '</h5>' . PHP_EOL;
$card .= HTMLUtils::getFormHeader($bridgeName);
foreach($parameter as $id=>$inputEntry) {
$additionalInfoString = '';
if(isset($inputEntry['required']) && $inputEntry['required'] === true)
$additionalInfoString .= ' required';
if(isset($inputEntry['pattern']))
$additionalInfoString .= ' pattern="' . $inputEntry['pattern'] . '"';
if(isset($inputEntry['title']))
$additionalInfoString .= ' title="' . $inputEntry['title'] . '"';
if(!isset($inputEntry['exampleValue']))
$inputEntry['exampleValue'] = '';
if(!isset($inputEntry['defaultValue']))
$inputEntry['defaultValue'] = '';
$idArg = 'arg-' . urlencode($bridgeName) . '-' . urlencode($parameterName) . '-' . urlencode($id);
$card .= '<label for="' . $idArg . '">' . $inputEntry['name'] . ' : </label>' . PHP_EOL;
if(!isset($inputEntry['type']) || $inputEntry['type'] == 'text') {
$card .= '<input ' . $additionalInfoString . ' id="' . $idArg . '" type="text" value="' . $inputEntry['defaultValue'] . '" placeholder="' . $inputEntry['exampleValue'] . '" name="' . $id . '" /><br />' . PHP_EOL;
} else if($inputEntry['type'] == 'number') {
$card .= '<input ' . $additionalInfoString . ' id="' . $idArg . '" type="number" value="' . $inputEntry['defaultValue'] . '" placeholder="' . $inputEntry['exampleValue'] . '" name="' . $id . '" /><br />' . PHP_EOL;
} else if($inputEntry['type'] == 'list') {
$card .= '<select ' . $additionalInfoString . ' id="' . $idArg . '" name="' . $id . '" >';
foreach($inputEntry['values'] as $name=>$value) {
if(is_array($value)){
$card.='<optgroup label="'.htmlentities($name).'">';
foreach($value as $subname=>$subvalue){
if($inputEntry['defaultValue'] === $subname || $inputEntry['defaultValue'] === $subvalue)
$card .= '<option value="' . $subvalue . '" selected>' . $subname . '</option>';
else
$card .= '<option value="' . $subvalue . '">' . $subname . '</option>';
}
$card.='</optgroup>';
}else{
if($inputEntry['defaultValue'] === $name || $inputEntry['defaultValue'] === $value)
$card .= '<option value="' . $value . '" selected>' . $name . '</option>';
else
$card .= '<option value="' . $value . '">' . $name . '</option>';
}
}
$card .= '</select><br >';
} else if($inputEntry['type'] == 'checkbox') {
if($inputEntry['defaultValue'] === 'checked')
$card .= '<input ' . $additionalInfoString . ' id="' . $idArg . '" type="checkbox" name="' . $id . '" checked /><br />' . PHP_EOL;
else
$card .= '<input ' . $additionalInfoString . ' id="' . $idArg . '" type="checkbox" name="' . $id . '" /><br />' . PHP_EOL;
}
}
if ($isActive){
if(defined('PROXY_URL') && PROXY_BYBRIDGE){
$idArg = 'arg-' . urlencode($bridgeName) . '-' . urlencode('proxyoff') . '-' . urlencode('_noproxy');
$card .= '<input id="' . $idArg . '" type="checkbox" name="_noproxy" />' . PHP_EOL;
$card .= '<label for="' .$idArg. '">Disable proxy ('.((defined('PROXY_NAME') && PROXY_NAME)?PROXY_NAME:PROXY_URL).')</label><br />' . PHP_EOL;
}
$card .= HTMLUtils::getHelperButtonsFormat($formats);
} else {
$card .= '<span style="font-weight: bold;">Inactive</span>';
}
$card .= '</form>' . PHP_EOL;
}
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$card .= '<label class="showless" for="showmore-' . $bridgeName . '">Show less</label>';
$card .= '<p class="maintainer">' . $bridgeClass::MAINTAINER . '</p>';
$card .= '</section>';
return $card;
}
private static function getHelperButtonsFormat($formats){
$buttons = '';
foreach( $formats as $name){
$buttons .= '<button type="submit" name="format" value="' . $name . '">' . $name . '</button>' . PHP_EOL;
}
return $buttons;
}
private static function getFormHeader($bridge){
return <<<EOD
<form method="GET" action="?">
<input type="hidden" name="action" value="display" />
<input type="hidden" name="bridge" value="{$bridge}" />
EOD;
}
}
class HTMLSanitizer {
var $tagsToRemove;
var $keptAttributes;
var $onlyKeepText;
public static $DEFAULT_CLEAR_TAGS = ["script", "iframe", "input", "form"];
public static $KEPT_ATTRIBUTES = ["title", "href", "src"];
public static $ONLY_TEXT = [];
public function __construct($tags_to_remove = null, $kept_attributes = null, $only_keep_text = null) {
$this->tagsToRemove = $tags_to_remove == null ? HTMLSanitizer::$DEFAULT_CLEAR_TAGS : $tags_to_remove;
$this->keptAttributes = $kept_attributes == null ? HTMLSanitizer::$KEPT_ATTRIBUTES : $kept_attributes;
$this->onlyKeepText = $only_keep_text == null ? HTMLSanitizer::$ONLY_TEXT : $only_keep_text;
}
public function sanitize($textToSanitize) {
$htmlContent = str_get_html($textToSanitize);
foreach($htmlContent->find('*[!b38fd2b1fe7f4747d6b1c1254ccd055e]') as $element) {
if(in_array($element->tag, $this->onlyKeepText)) {
$element->outertext = $element->plaintext;
} else if(in_array($element->tag, $this->tagsToRemove)) {
$element->outertext = '';
} else {
foreach($element->getAllAttributes() as $attributeName => $attribute) {
if(!in_array($attributeName, $this->keptAttributes))
$element->removeAttribute($attributeName);
}
}
}
return $htmlContent;
}
public static function defaultImageSrcTo($content, $server) {
foreach($content->find('img') as $image) {
if(strpos($image->src, "http") == NULL && strpos($image->src, "//") == NULL && strpos($image->src, "data:") == NULL)
$image->src = $server.$image->src;
}
return $content;
}
}