first commit

pgserver/vendor/fgrosse/phpasn1/lib/X509/SAN/IPAddress.php

@@ -0,0 +1,73 @@
+<?php
+/*
+ * This file is part of the PHPASN1 library.
+ *
+ * Copyright © Friedrich Große <friedrich.grosse@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FG\X509\SAN;
+
+use FG\ASN1\ASNObject;
+use FG\ASN1\Parsable;
+use FG\ASN1\Exception\ParserException;
+
+class IPAddress extends ASNObject implements Parsable
+{
+    const IDENTIFIER = 0x87; // not sure yet why this is the identifier used in SAN extensions
+
+    /** @var string */
+    private $value;
+
+    public function __construct($ipAddressString)
+    {
+        $this->value = $ipAddressString;
+    }
+
+    public function getType()
+    {
+        return self::IDENTIFIER;
+    }
+
+    public function getContent()
+    {
+        return $this->value;
+    }
+
+    protected function calculateContentLength()
+    {
+        return 4;
+    }
+
+    protected function getEncodedValue()
+    {
+        $ipParts = explode('.', $this->value);
+        $binary  = chr($ipParts[0]);
+        $binary .= chr($ipParts[1]);
+        $binary .= chr($ipParts[2]);
+        $binary .= chr($ipParts[3]);
+
+        return $binary;
+    }
+
+    public static function fromBinary(&$binaryData, &$offsetIndex = 0)
+    {
+        self::parseIdentifier($binaryData[$offsetIndex], self::IDENTIFIER, $offsetIndex++);
+        $contentLength = self::parseContentLength($binaryData, $offsetIndex);
+        if ($contentLength != 4) {
+            throw new ParserException("A FG\\X509\SAN\IPAddress should have a content length of 4. Extracted length was {$contentLength}", $offsetIndex);
+        }
+
+        $ipAddressString = ord($binaryData[$offsetIndex++]).'.';
+        $ipAddressString .= ord($binaryData[$offsetIndex++]).'.';
+        $ipAddressString .= ord($binaryData[$offsetIndex++]).'.';
+        $ipAddressString .= ord($binaryData[$offsetIndex++]);
+
+        $parsedObject = new self($ipAddressString);
+        $parsedObject->getObjectLength();
+
+        return $parsedObject;
+    }
+}