114 lines
3.2 KiB
PHP
114 lines
3.2 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Validates shorthand CSS property background.
|
|
* @warning Does not support url tokens that have internal spaces.
|
|
*/
|
|
class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
|
|
{
|
|
|
|
/**
|
|
* Local copy of component validators.
|
|
* @type HTMLPurifier_AttrDef[]
|
|
* @note See HTMLPurifier_AttrDef_Font::$info for a similar impl.
|
|
*/
|
|
protected $info;
|
|
|
|
/**
|
|
* @param HTMLPurifier_Config $config
|
|
*/
|
|
public function __construct($config)
|
|
{
|
|
$def = $config->getCSSDefinition();
|
|
$this->info['background-color'] = $def->info['background-color'];
|
|
$this->info['background-image'] = $def->info['background-image'];
|
|
$this->info['background-repeat'] = $def->info['background-repeat'];
|
|
$this->info['background-attachment'] = $def->info['background-attachment'];
|
|
$this->info['background-position'] = $def->info['background-position'];
|
|
$this->info['background-size'] = $def->info['background-size'];
|
|
}
|
|
|
|
/**
|
|
* @param string $string
|
|
* @param HTMLPurifier_Config $config
|
|
* @param HTMLPurifier_Context $context
|
|
* @return bool|string
|
|
*/
|
|
public function validate($string, $config, $context)
|
|
{
|
|
// regular pre-processing
|
|
$string = $this->parseCDATA($string);
|
|
if ($string === '') {
|
|
return false;
|
|
}
|
|
|
|
// munge rgb() decl if necessary
|
|
$string = $this->mungeRgb($string);
|
|
|
|
// assumes URI doesn't have spaces in it
|
|
$bits = explode(' ', $string); // bits to process
|
|
|
|
$caught = array();
|
|
$caught['color'] = false;
|
|
$caught['image'] = false;
|
|
$caught['repeat'] = false;
|
|
$caught['attachment'] = false;
|
|
$caught['position'] = false;
|
|
$caught['size'] = false;
|
|
|
|
$i = 0; // number of catches
|
|
|
|
foreach ($bits as $bit) {
|
|
if ($bit === '') {
|
|
continue;
|
|
}
|
|
foreach ($caught as $key => $status) {
|
|
if ($key != 'position') {
|
|
if ($status !== false) {
|
|
continue;
|
|
}
|
|
$r = $this->info['background-' . $key]->validate($bit, $config, $context);
|
|
} else {
|
|
$r = $bit;
|
|
}
|
|
if ($r === false) {
|
|
continue;
|
|
}
|
|
if ($key == 'position') {
|
|
if ($caught[$key] === false) {
|
|
$caught[$key] = '';
|
|
}
|
|
$caught[$key] .= $r . ' ';
|
|
} else {
|
|
$caught[$key] = $r;
|
|
}
|
|
$i++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!$i) {
|
|
return false;
|
|
}
|
|
if ($caught['position'] !== false) {
|
|
$caught['position'] = $this->info['background-position']->
|
|
validate($caught['position'], $config, $context);
|
|
}
|
|
|
|
$ret = array();
|
|
foreach ($caught as $value) {
|
|
if ($value === false) {
|
|
continue;
|
|
}
|
|
$ret[] = $value;
|
|
}
|
|
|
|
if (empty($ret)) {
|
|
return false;
|
|
}
|
|
return implode(' ', $ret);
|
|
}
|
|
}
|
|
|
|
// vim: et sw=4 sts=4
|