$1OK$2',
'$1WARNING$2',
'$1CRITICAL$2',
'$1UNKNOWN$2',
'@@@@@@',
);
/**
* The character
*
* @var string
*/
protected $zeroWidthSpace;
/**
* The encoded character
*
* @var string
*/
protected $zeroWidthSpaceEnt = '';
/**
* Create a new Zend_View_Helper_PluginOutput
*/
public function __construct()
{
// This is actually not required as the value is constant,
// but as its (visual) length is 0, it's likely to be mixed up with the empty string.
$this->zeroWidthSpace = ''
. html_entity_decode($this->zeroWidthSpaceEnt, ENT_NOQUOTES, 'UTF-8')
. '';
$this->zeroWidthSpaceEnt = ''
. $this->zeroWidthSpaceEnt
. '';
}
/**
* Render plugin output
*
* @param string $output
* @param bool $raw
*
* @return string
*/
public function pluginOutput($output, $raw = false)
{
if (empty($output)) {
return '';
}
$output = preg_replace('~]*>~', "\n", $output);
if (preg_match('~<[^>]*["/\'][^>]*>~', $output)) {
// HTML
$output = preg_replace(
'~getPurifier()->purify($output)
);
$isHtml = true;
$useDom = true;
} else {
// Plaintext
$count = 0;
$output = preg_replace(
self::$txtPatterns,
self::$txtReplacements,
$this->view->escape($output),
-1,
$count
);
$isHtml = false;
$useDom = (bool) $count;
}
// Help browsers to break words in plugin output
$output = trim($output);
// Add space after comma where missing
$output = preg_replace('/,(?=[^\s])/', ', ', $output);
$output = $useDom ? $this->fixLinksAndWrapping($output) : $this->fixWrapping($output, $this->zeroWidthSpaceEnt);
if (! $raw) {
if ($isHtml) {
$output = '' . $output . '
';
} else {
$output = '' . $output . '
';
}
}
return $output;
}
/**
* Replace classic Icinga CGI links with Icinga Web 2 links and
* add zero width space to make wrapping easier for the user agent
*
* @param string $html
*
* @return string
*/
protected function fixLinksAndWrapping($html)
{
$ret = array();
$dom = new DOMDocument;
$dom->loadXML('' . $html . '
', LIBXML_NOERROR | LIBXML_NOWARNING);
$dom->preserveWhiteSpace = false;
$links = $dom->getElementsByTagName('a');
foreach ($links as $tag)
{
$href = $tag->getAttribute('href');
if (preg_match('~^/cgi\-bin/status\.cgi\?(.+)$~', $href, $m)) {
parse_str($m[1], $params);
if (isset($params['host'])) {
$tag->setAttribute('href', $this->view->baseUrl(
'/monitoring/host/show?host=' . urlencode($params['host']
)));
}
} else {
// ignoring
}
//$ret[$tag->getAttribute('href')] = $tag->childNodes->item(0)->nodeValue;
}
$this->fixWrappingRecursive($dom);
return substr($dom->saveHTML(), 5, -7);
}
/**
* Initialize and return self::$purifier
*
* @return HTMLPurifier
*/
protected function getPurifier()
{
if (self::$purifier === null) {
require_once 'HTMLPurifier/Bootstrap.php';
require_once 'HTMLPurifier.php';
require_once 'HTMLPurifier.autoload.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('Core.EscapeNonASCIICharacters', true);
$config->set('HTML.Allowed', 'p,br,b,a[href|target],i,table,tr,th[colspan],td[colspan],div,*[class]');
$config->set('Attr.AllowedFrameTargets', array('_blank'));
// This avoids permission problems:
// $config->set('Core.DefinitionCache', null);
$config->set('Cache.DefinitionImpl', null);
// TODO: Use a cache directory:
// $config->set('Cache.SerializerPath', '/var/spool/whatever');
// $config->set('URI.Base', 'http://www.example.com');
// $config->set('URI.MakeAbsolute', true);
// $config->set('AutoFormat.AutoParagraph', true);
self::$purifier = new HTMLPurifier($config);
}
return self::$purifier;
}
/**
* Add zero width space to all text in the DOM to make wrapping easier for the user agent
*
* @param DOMNode $node
*/
protected function fixWrappingRecursive(DOMNode $node)
{
if ($node instanceof DOMText) {
$node->data = $this->fixWrapping($node->data, $this->zeroWidthSpace);
} elseif ($node->childNodes !== null) {
foreach ($node->childNodes as $childNode) {
$this->fixWrappingRecursive($childNode);
}
}
}
/**
* Add zero width space to make wrapping easier for the user agent
*
* @param string $output
* @param string $zeroWidthSpace
*
* @return string
*/
protected function fixWrapping($output, $zeroWidthSpace)
{
// TODO(el): Disabled until we find a bulletproof implementation
return $output;
// Add zero width space after ')', ']', ':', '.', '_' and '-' if not surrounded by whitespaces
$output = preg_replace('/([^\s])([\\)\\]:._-])([^\s])/', '$1$2' . $zeroWidthSpace . '$3', $output);
// Add zero width space before '(' and '[' if not surrounded by whitespaces
return preg_replace('/([^\s])([([])([^\s])/', '$1' . $zeroWidthSpace . '$2$3', $output);
}
}