HTMLPurifier_URIScheme Class Reference

Validator for the components of a URI for a specific scheme. More...

Inheritance diagram for HTMLPurifier_URIScheme:

Collaboration diagram for HTMLPurifier_URIScheme:

Public Member Functions
	doValidate (&$uri, $config, $context)
	Validates the components of a URI for a specific scheme.
	validate (&$uri, $config, $context)
	Public interface for validating components of a URI.

Data Fields
	$default_port = null
	Scheme's default port (integer).
	$browsable = false
	Whether or not URIs of this schem are locatable by a browser http and ftp are accessible, while mailto and news are not.
	$hierarchical = false
	Whether or not the URI always uses <hier_part>, resolves edge cases with making relative URIs absolute.
	$may_omit_host = false
	Whether or not the URI may omit a hostname when the scheme is explicitly specified, ala file:///path/to/file.

Detailed Description

Validator for the components of a URI for a specific scheme.

Definition at line 6 of file URIScheme.php.

Member Function Documentation

HTMLPurifier_URIScheme::doValidate ( &  $uri,   $config,   $context  )

abstract

Validates the components of a URI for a specific scheme.

Parameters

$uri	Reference to a HTMLPurifier_URI object
$config	HTMLPurifier_Config object
$context	HTMLPurifier_Context object

Returns

Bool success or failure

Reimplemented in HTMLPurifier_URIScheme_data, HTMLPurifier_URIScheme_file, HTMLPurifier_URIScheme_mailto, HTMLPurifier_URIScheme_ftp, HTMLPurifier_URIScheme_http, HTMLPurifier_URIScheme_news, and HTMLPurifier_URIScheme_nntp.

Referenced by validate().

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HTMLPurifier_URIScheme::validate	(	&	$uri,
			$config,
			$context
	)

Public interface for validating components of a URI.

Performs a bunch of default actions. Don't overload this method.

Parameters

$uri	Reference to a HTMLPurifier_URI object
$config	HTMLPurifier_Config object
$context	HTMLPurifier_Context object

Returns

Bool success or failure

Definition at line 52 of file URIScheme.php.

References $config, and doValidate().

                                                       {
        if ($this->default_port == $uri->port) $uri->port = null;
        // kludge: browsers do funny things when the scheme but not the
        // authority is set
        if (!$this->may_omit_host &&
            // if the scheme is present, a missing host is always in error
            (!is_null($uri->scheme) && ($uri->host === '' || is_null($uri->host))) ||
            // if the scheme is not present, a *blank* host is in error,
            // since this translates into '///path' which most browsers
            // interpret as being 'http://path'.
             (is_null($uri->scheme) && $uri->host === '')
        ) {
            do {
                if (is_null($uri->scheme)) {
                    if (substr($uri->path, 0, 2) != '//') {
                        $uri->host = null;
                        break;
                    }
                    // URI is '////path', so we cannot nullify the
                    // host to preserve semantics.  Try expanding the
                    // hostname instead (fall through)
                }
                // first see if we can manually insert a hostname
                $host = $config->get('URI.Host');
                if (!is_null($host)) {
                    $uri->host = $host;
                } else {
                    // we can't do anything sensible, reject the URL.
                    return false;
                }
            } while (false);
        }
        return $this->doValidate($uri, $config, $context);
    }

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Field Documentation

HTMLPurifier_URIScheme::$browsable = false

Whether or not URIs of this schem are locatable by a browser http and ftp are accessible, while mailto and news are not.

Definition at line 20 of file URIScheme.php.

HTMLPurifier_URIScheme::$default_port = null

Scheme's default port (integer).

If an explicit port number is specified that coincides with the default port, it will be elided.

Definition at line 14 of file URIScheme.php.

HTMLPurifier_URIScheme::$hierarchical = false

Whether or not the URI always uses <hier_part>, resolves edge cases with making relative URIs absolute.

Definition at line 26 of file URIScheme.php.

HTMLPurifier_URIScheme::$may_omit_host = false

Whether or not the URI may omit a hostname when the scheme is explicitly specified, ala file:///path/to/file.

As of writing, 'file' is the only scheme that browsers support his properly.

Definition at line 33 of file URIScheme.php.

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The documentation for this class was generated from the following file:

• Services/Html/HtmlPurifier/library/HTMLPurifier/URIScheme.php