golden hour

/var/www/html/wp-content/plugins/nextgen-gallery/vendor/ezyang/htmlpurifier/library/HTMLPurifier

File/Folder	Size	Actions
Arborize.php	2.49 KB
AttrCollections.php	4.75 KB
AttrDef	-
AttrDef.php	5.07 KB
AttrTransform	-
AttrTransform.php	1.94 KB
AttrTypes.php	3.58 KB
AttrValidator.php	6.42 KB
Bootstrap.php	4.5 KB
CSSDefinition.php	18.62 KB
ChildDef	-
ChildDef.php	1.52 KB
Config.php	30.91 KB
ConfigSchema	-
ConfigSchema.php	5.76 KB
ContentSets.php	5.51 KB
Context.php	2.57 KB
Definition.php	1.33 KB
DefinitionCache	-
DefinitionCache.php	3.82 KB
DefinitionCacheFactory.php	3.13 KB
Doctype.php	1.54 KB
DoctypeRegistry.php	4.13 KB
ElementDef.php	7.35 KB
Encoder.php	25.05 KB
EntityLookup	-
EntityLookup.php	1.39 KB
EntityParser.php	9.75 KB
ErrorCollector.php	7.45 KB
ErrorStruct.php	1.85 KB
Exception.php	177 B
Filter	-
Filter.php	1.59 KB
Generator.php	10.01 KB
HTMLDefinition.php	17.33 KB
HTMLModule	-
HTMLModule.php	9.93 KB
HTMLModuleManager.php	15.57 KB
IDAccumulator.php	1.61 KB
Injector	-
Injector.php	8.79 KB
Language	-
Language.php	5.92 KB
LanguageFactory.php	6.46 KB
Length.php	3.78 KB
Lexer	-
Lexer.php	13.12 KB
Node	-
Node.php	1.25 KB
PercentEncoder.php	3.48 KB
Printer	-
Printer.php	5.76 KB
PropertyList.php	2.72 KB
PropertyListIterator.php	865 B
Queue.php	1.51 KB
Strategy	-
Strategy.php	762 B
StringHash.php	1.04 KB
StringHashParser.php	3.56 KB
TagTransform	-
TagTransform.php	1.07 KB
Token	-
Token.php	2.17 KB
TokenFactory.php	3.03 KB
URI.php	10.35 KB
URIDefinition.php	3.35 KB
URIFilter	-
URIFilter.php	2.31 KB
URIParser.php	2.24 KB
URIScheme	-
URIScheme.php	3.4 KB
URISchemeRegistry.php	2.35 KB
UnitConverter.php	9.89 KB
VarParser	-
VarParser.php	5.85 KB
VarParserException.php	157 B
Zipper.php	4.34 KB

Edit: URI.php

<?php

/**
 * HTML Purifier's internal representation of a URI.
 * @note
 *      Internal data-structures are completely escaped. If the data needs
 *      to be used in a non-URI context (which is very unlikely), be sure
 *      to decode it first. The URI may not necessarily be well-formed until
 *      validate() is called.
 */
class HTMLPurifier_URI
{
    /**
     * @type string
     */
    public $scheme;

/**
     * @type string
     */
    public $userinfo;

/**
     * @type string
     */
    public $host;

/**
     * @type int
     */
    public $port;

/**
     * @type string
     */
    public $path;

/**
     * @type string
     */
    public $query;

/**
     * @type string
     */
    public $fragment;

/**
     * @param string $scheme
     * @param string $userinfo
     * @param string $host
     * @param int $port
     * @param string $path
     * @param string $query
     * @param string $fragment
     * @note Automatically normalizes scheme and port
     */
    public function __construct($scheme, $userinfo, $host, $port, $path, $query, $fragment)
    {
        $this->scheme = is_null($scheme) || ctype_lower($scheme) ? $scheme : strtolower($scheme);
        $this->userinfo = $userinfo;
        $this->host = $host;
        $this->port = is_null($port) ? $port : (int)$port;
        $this->path = $path;
        $this->query = $query;
        $this->fragment = $fragment;
    }

/**
     * Retrieves a scheme object corresponding to the URI's scheme/default
     * @param HTMLPurifier_Config $config
     * @param HTMLPurifier_Context $context
     * @return HTMLPurifier_URIScheme Scheme object appropriate for validating this URI
     */
    public function getSchemeObj($config, $context)
    {
        $registry = HTMLPurifier_URISchemeRegistry::instance();
        if ($this->scheme !== null) {
            $scheme_obj = $registry->getScheme($this->scheme, $config, $context);
            if (!$scheme_obj) {
                return false;
            } // invalid scheme, clean it out
        } else {
            // no scheme: retrieve the default one
            $def = $config->getDefinition('URI');
            $scheme_obj = $def->getDefaultScheme($config, $context);
            if (!$scheme_obj) {
                if ($def->defaultScheme !== null) {
                    // something funky happened to the default scheme object
                    trigger_error(
                        'Default scheme object "' . $def->defaultScheme . '" was not readable',
                        E_USER_WARNING
                    );
                } // suppress error if it's null
                return false;
            }
        }
        return $scheme_obj;
    }

/**
     * Generic validation method applicable for all schemes. May modify
     * this URI in order to get it into a compliant form.
     * @param HTMLPurifier_Config $config
     * @param HTMLPurifier_Context $context
     * @return bool True if validation/filtering succeeds, false if failure
     */
    public function validate($config, $context)
    {
        // ABNF definitions from RFC 3986
        $chars_sub_delims = '!$&\'()*+,;=';
        $chars_gen_delims = ':/?#[]@';
        $chars_pchar = $chars_sub_delims . ':@';

// 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;
            }
        }

// validate scheme
        // NOTE: It's not appropriate to check whether or not this
        // scheme is in our registry, since a URIFilter may convert a
        // URI that we don't allow into one we do.  So instead, we just
        // check if the scheme can be dropped because there is no host
        // and it is our default scheme.
        if (!is_null($this->scheme) && is_null($this->host) || $this->host === '') {
            // support for relative paths is pretty abysmal when the
            // scheme is present, so axe it when possible
            $def = $config->getDefinition('URI');
            if ($def->defaultScheme === $this->scheme) {
                $this->scheme = null;
            }
        }

// validate username
        if (!is_null($this->userinfo)) {
            $encoder = new HTMLPurifier_PercentEncoder($chars_sub_delims . ':');
            $this->userinfo = $encoder->encode($this->userinfo);
        }

// validate port
        if (!is_null($this->port)) {
            if ($this->port < 1 || $this->port > 65535) {
                $this->port = null;
            }
        }

// validate path
        $segments_encoder = new HTMLPurifier_PercentEncoder($chars_pchar . '/');
        if (!is_null($this->host)) { // this catches $this->host === ''
            // path-abempty (hier and relative)
            // http://www.example.com/my/path
            // //www.example.com/my/path (looks odd, but works, and
            //                            recognized by most browsers)
            // (this set is valid or invalid on a scheme by scheme
            // basis, so we'll deal with it later)
            // file:///my/path
            // ///my/path
            $this->path = $segments_encoder->encode($this->path);
        } elseif ($this->path !== '') {
            if ($this->path[0] === '/') {
                // path-absolute (hier and relative)
                // http:/my/path
                // /my/path
                if (strlen($this->path) >= 2 && $this->path[1] === '/') {
                    // This could happen if both the host gets stripped
                    // out
                    // http://my/path
                    // //my/path
                    $this->path = '';
                } else {
                    $this->path = $segments_encoder->encode($this->path);
                }
            } elseif (!is_null($this->scheme)) {
                // path-rootless (hier)
                // http:my/path
                // Short circuit evaluation means we don't need to check nz
                $this->path = $segments_encoder->encode($this->path);
            } else {
                // path-noscheme (relative)
                // my/path
                // (once again, not checking nz)
                $segment_nc_encoder = new HTMLPurifier_PercentEncoder($chars_sub_delims . '@');
                $c = strpos($this->path, '/');
                if ($c !== false) {
                    $this->path =
                        $segment_nc_encoder->encode(substr($this->path, 0, $c)) .
                        $segments_encoder->encode(substr($this->path, $c));
                } else {
                    $this->path = $segment_nc_encoder->encode($this->path);
                }
            }
        } else {
            // path-empty (hier and relative)
            $this->path = ''; // just to be safe
        }

// qf = query and fragment
        $qf_encoder = new HTMLPurifier_PercentEncoder($chars_pchar . '/?');

if (!is_null($this->query)) {
            $this->query = $qf_encoder->encode($this->query);
        }

if (!is_null($this->fragment)) {
            $this->fragment = $qf_encoder->encode($this->fragment);
        }
        return true;
    }

/**
     * Convert URI back to string
     * @return string URI appropriate for output
     */
    public function toString()
    {
        // reconstruct authority
        $authority = null;
        // there is a rendering difference between a null authority
        // (http:foo-bar) and an empty string authority
        // (http:///foo-bar).
        if (!is_null($this->host)) {
            $authority = '';
            if (!is_null($this->userinfo)) {
                $authority .= $this->userinfo . '@';
            }
            $authority .= $this->host;
            if (!is_null($this->port)) {
                $authority .= ':' . $this->port;
            }
        }

// Reconstruct the result
        // One might wonder about parsing quirks from browsers after
        // this reconstruction.  Unfortunately, parsing behavior depends
        // on what *scheme* was employed (file:///foo is handled *very*
        // differently than http:///foo), so unfortunately we have to
        // defer to the schemes to do the right thing.
        $result = '';
        if (!is_null($this->scheme)) {
            $result .= $this->scheme . ':';
        }
        if (!is_null($authority)) {
            $result .= '//' . $authority;
        }
        $result .= $this->path;
        if (!is_null($this->query)) {
            $result .= '?' . $this->query;
        }
        if (!is_null($this->fragment)) {
            $result .= '#' . $this->fragment;
        }

return $result;
    }

/**
     * Returns true if this URL might be considered a 'local' URL given
     * the current context.  This is true when the host is null, or
     * when it matches the host supplied to the configuration.
     *
     * Note that this does not do any scheme checking, so it is mostly
     * only appropriate for metadata that doesn't care about protocol
     * security.  isBenign is probably what you actually want.
     * @param HTMLPurifier_Config $config
     * @param HTMLPurifier_Context $context
     * @return bool
     */
    public function isLocal($config, $context)
    {
        if ($this->host === null) {
            return true;
        }
        $uri_def = $config->getDefinition('URI');
        if ($uri_def->host === $this->host) {
            return true;
        }
        return false;
    }

/**
     * Returns true if this URL should be considered a 'benign' URL,
     * that is:
     *
     *      - It is a local URL (isLocal), and
     *      - It has a equal or better level of security
     * @param HTMLPurifier_Config $config
     * @param HTMLPurifier_Context $context
     * @return bool
     */
    public function isBenign($config, $context)
    {
        if (!$this->isLocal($config, $context)) {
            return false;
        }

$scheme_obj = $this->getSchemeObj($config, $context);
        if (!$scheme_obj) {
            return false;
        } // conservative approach

$current_scheme_obj = $config->getDefinition('URI')->getDefaultScheme($config, $context);
        if ($current_scheme_obj->secure) {
            if (!$scheme_obj->secure) {
                return false;
            }
        }
        return true;
    }
}

// vim: et sw=4 sts=4