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[2.1.0] Migrate host blacklist functionality to URIFilter.

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git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1336 48356398-32a2-884e-a903-53898d9a118a
This commit is contained in:
Edward Z. Yang
2007-08-02 01:41:37 +00:00
parent 4919187fc6
commit 22ef52a7f6
8 changed files with 114 additions and 95 deletions
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41
library/HTMLPurifier/URI.php
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@@ -24,6 +24,12 @@ class HTMLPurifier_URI
$this->fragment = $fragment;
}
/**
* Retrieves a scheme object corresponding to the URI's scheme/default
* @param $config Instance of HTMLPurifier_Config
* @param $context Instance of HTMLPurifier_Context
* @return Scheme object appropriate for validating this URI
*/
function getSchemeObj($config, &$context) {
$registry =& HTMLPurifier_URISchemeRegistry::instance();
if ($this->scheme !== null) {
@@ -46,26 +52,17 @@ class HTMLPurifier_URI
/**
* Generic validation method applicable for all schemes
* @param $config Instance of HTMLPurifier_Config
* @param $context Instance of HTMLPurifier_Context
* @return True if validation/filtering succeeds, false if failure
*/
function validate($config, &$context) {
// validate host
if (!is_null($this->host)) {
$host_def = new HTMLPurifier_AttrDef_URI_Host();
$this->host = $host_def->validate($this->host, $config, $context);
if ($this->host === false) $this->host = null;
// check host against blacklist
if ($this->checkBlacklist($this->host, $config, $context)) return false;
}
// munge scheme off if necessary
if (!is_null($this->scheme) && is_null($this->host)) {
if ($config->get('URI', 'DefaultScheme') == $this->scheme) {
$this->scheme = null;
}
}
// validate port
@@ -85,27 +82,9 @@ class HTMLPurifier_URI
}
/**
* Checks a host against an array blacklist
* @param $host Host to check
* @param $config HTMLPurifier_Config instance
* @param $context HTMLPurifier_Context instance
* @return bool Is spam?
*/
function checkBlacklist($host, $config, &$context) {
$blacklist = $config->get('URI', 'HostBlacklist');
if (!empty($blacklist)) {
foreach($blacklist as $blacklisted_host_fragment) {
if (strpos($host, $blacklisted_host_fragment) !== false) {
return true;
}
}
}
return false;
}
/**
* Convert URI back to string
* @return String URI appropriate for output
*/
function toString() {
// reconstruct authority