1 files changed, 0 insertions, 128 deletions
diff --git a/library/HTMLPurifier/AttrDef/URI/Host.php b/library/HTMLPurifier/AttrDef/URI/Host.php
deleted file mode 100644
index e7df800b1..000000000
--- a/library/HTMLPurifier/AttrDef/URI/Host.php
+++ /dev/null
@@ -1,128 +0,0 @@
-<?php
-
-/**
- * Validates a host according to the IPv4, IPv6 and DNS (future) specifications.
- */
-class HTMLPurifier_AttrDef_URI_Host extends HTMLPurifier_AttrDef
-{
-
-    /**
-     * IPv4 sub-validator.
-     * @type HTMLPurifier_AttrDef_URI_IPv4
-     */
-    protected $ipv4;
-
-    /**
-     * IPv6 sub-validator.
-     * @type HTMLPurifier_AttrDef_URI_IPv6
-     */
-    protected $ipv6;
-
-    public function __construct()
-    {
-        $this->ipv4 = new HTMLPurifier_AttrDef_URI_IPv4();
-        $this->ipv6 = new HTMLPurifier_AttrDef_URI_IPv6();
-    }
-
-    /**
-     * @param string $string
-     * @param HTMLPurifier_Config $config
-     * @param HTMLPurifier_Context $context
-     * @return bool|string
-     */
-    public function validate($string, $config, $context)
-    {
-        $length = strlen($string);
-        // empty hostname is OK; it's usually semantically equivalent:
-        // the default host as defined by a URI scheme is used:
-        //
-        //      If the URI scheme defines a default for host, then that
-        //      default applies when the host subcomponent is undefined
-        //      or when the registered name is empty (zero length).
-        if ($string === '') {
-            return '';
-        }
-        if ($length > 1 && $string[0] === '[' && $string[$length - 1] === ']') {
-            //IPv6
-            $ip = substr($string, 1, $length - 2);
-            $valid = $this->ipv6->validate($ip, $config, $context);
-            if ($valid === false) {
-                return false;
-            }
-            return '[' . $valid . ']';
-        }
-
-        // need to do checks on unusual encodings too
-        $ipv4 = $this->ipv4->validate($string, $config, $context);
-        if ($ipv4 !== false) {
-            return $ipv4;
-        }
-
-        // A regular domain name.
-
-        // This doesn't match I18N domain names, but we don't have proper IRI support,
-        // so force users to insert Punycode.
-
-        // There is not a good sense in which underscores should be
-        // allowed, since it's technically not! (And if you go as
-        // far to allow everything as specified by the DNS spec...
-        // well, that's literally everything, modulo some space limits
-        // for the components and the overall name (which, by the way,
-        // we are NOT checking!).  So we (arbitrarily) decide this:
-        // let's allow underscores wherever we would have allowed
-        // hyphens, if they are enabled.  This is a pretty good match
-        // for browser behavior, for example, a large number of browsers
-        // cannot handle foo_.example.com, but foo_bar.example.com is
-        // fairly well supported.
-        $underscore = $config->get('Core.AllowHostnameUnderscore') ? '_' : '';
-
-        // The productions describing this are:
-        $a   = '[a-z]';     // alpha
-        $an  = '[a-z0-9]';  // alphanum
-        $and = "[a-z0-9-$underscore]"; // alphanum | "-"
-        // domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
-        $domainlabel = "$an($and*$an)?";
-        // toplabel    = alpha | alpha *( alphanum | "-" ) alphanum
-        $toplabel = "$a($and*$an)?";
-        // hostname    = *( domainlabel "." ) toplabel [ "." ]
-        if (preg_match("/^($domainlabel\.)*$toplabel\.?$/i", $string)) {
-            return $string;
-        }
-
-        // If we have Net_IDNA2 support, we can support IRIs by
-        // punycoding them. (This is the most portable thing to do,
-        // since otherwise we have to assume browsers support
-
-        if ($config->get('Core.EnableIDNA')) {
-            $idna = new Net_IDNA2(array('encoding' => 'utf8', 'overlong' => false, 'strict' => true));
-            // we need to encode each period separately
-            $parts = explode('.', $string);
-            try {
-                $new_parts = array();
-                foreach ($parts as $part) {
-                    $encodable = false;
-                    for ($i = 0, $c = strlen($part); $i < $c; $i++) {
-                        if (ord($part[$i]) > 0x7a) {
-                            $encodable = true;
-                            break;
-                        }
-                    }
-                    if (!$encodable) {
-                        $new_parts[] = $part;
-                    } else {
-                        $new_parts[] = $idna->encode($part);
-                    }
-                }
-                $string = implode('.', $new_parts);
-                if (preg_match("/^($domainlabel\.)*$toplabel\.?$/i", $string)) {
-                    return $string;
-                }
-            } catch (Exception $e) {
-                // XXX error reporting
-            }
-        }
-        return false;
-    }
-}
-
-// vim: et sw=4 sts=4