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pgserver/vendor/fgrosse/phpasn1/lib/X509/CSR/Attributes.php

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+<?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\CSR;
+
+use FG\ASN1\ASNObject;
+use FG\X509\CertificateExtensions;
+use FG\ASN1\OID;
+use FG\ASN1\Parsable;
+use FG\ASN1\Construct;
+use FG\ASN1\Identifier;
+use FG\ASN1\Universal\Set;
+use FG\ASN1\Universal\Sequence;
+use FG\ASN1\Universal\ObjectIdentifier;
+
+class Attributes extends Construct implements Parsable
+{
+    public function getType()
+    {
+        return 0xA0;
+    }
+
+    public function addAttribute($objectIdentifier, Set $attribute)
+    {
+        if (is_string($objectIdentifier)) {
+            $objectIdentifier = new ObjectIdentifier($objectIdentifier);
+        }
+        $attributeSequence = new Sequence($objectIdentifier, $attribute);
+        $attributeSequence->getNumberOfLengthOctets();  // length and number of length octets is calculated
+        $this->addChild($attributeSequence);
+    }
+
+    public static function fromBinary(&$binaryData, &$offsetIndex = 0)
+    {
+        self::parseIdentifier($binaryData[$offsetIndex], 0xA0, $offsetIndex++);
+        $contentLength = self::parseContentLength($binaryData, $offsetIndex);
+        $octetsToRead = $contentLength;
+
+        $parsedObject = new self();
+        while ($octetsToRead > 0) {
+            $initialOffset = $offsetIndex; // used to calculate how much bits have been read
+            self::parseIdentifier($binaryData[$offsetIndex], Identifier::SEQUENCE, $offsetIndex++);
+            self::parseContentLength($binaryData, $offsetIndex);
+
+            $objectIdentifier = ObjectIdentifier::fromBinary($binaryData, $offsetIndex);
+            $oidString = $objectIdentifier->getContent();
+            if ($oidString == OID::PKCS9_EXTENSION_REQUEST) {
+                $attribute = CertificateExtensions::fromBinary($binaryData, $offsetIndex);
+            } else {
+                $attribute = ASNObject::fromBinary($binaryData, $offsetIndex);
+            }
+
+            $parsedObject->addAttribute($objectIdentifier, $attribute);
+            $octetsToRead -= ($offsetIndex - $initialOffset);
+        }
+
+        $parsedObject->setContentLength($contentLength);
+
+        return $parsedObject;
+    }
+}