1 files changed, 100 insertions, 0 deletions
diff --git a/vendor/fgrosse/phpasn1/lib/X509/CertificateExtensions.php b/vendor/fgrosse/phpasn1/lib/X509/CertificateExtensions.php
new file mode 100644
index 0000000..6ed1c6a
--- /dev/null
+++ b/vendor/fgrosse/phpasn1/lib/X509/CertificateExtensions.php
@@ -0,0 +1,100 @@
+<?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;
+
+use FG\ASN1\Exception\ParserException;
+use FG\ASN1\OID;
+use FG\ASN1\ASNObject;
+use FG\ASN1\Parsable;
+use FG\ASN1\Identifier;
+use FG\ASN1\Universal\OctetString;
+use FG\ASN1\Universal\Set;
+use FG\ASN1\Universal\Sequence;
+use FG\ASN1\Universal\ObjectIdentifier;
+use FG\X509\SAN\SubjectAlternativeNames;
+
+class CertificateExtensions extends Set implements Parsable
+{
+    private $innerSequence;
+    private $extensions = [];
+
+    public function __construct()
+    {
+        $this->innerSequence = new Sequence();
+        parent::__construct($this->innerSequence);
+    }
+
+    public function addSubjectAlternativeNames(SubjectAlternativeNames $sans)
+    {
+        $this->addExtension(OID::CERT_EXT_SUBJECT_ALT_NAME, $sans);
+    }
+
+    private function addExtension($oidString, ASNObject $extension)
+    {
+        $sequence = new Sequence();
+        $sequence->addChild(new ObjectIdentifier($oidString));
+        $sequence->addChild($extension);
+
+        $this->innerSequence->addChild($sequence);
+        $this->extensions[] = $extension;
+    }
+
+    public function getContent()
+    {
+        return $this->extensions;
+    }
+
+    public static function fromBinary(&$binaryData, &$offsetIndex = 0)
+    {
+        self::parseIdentifier($binaryData[$offsetIndex], Identifier::SET, $offsetIndex++);
+        self::parseContentLength($binaryData, $offsetIndex);
+
+        $tmpOffset = $offsetIndex;
+        $extensions = Sequence::fromBinary($binaryData, $offsetIndex);
+        $tmpOffset += 1 + $extensions->getNumberOfLengthOctets();
+
+        $parsedObject = new self();
+        foreach ($extensions as $extension) {
+            if ($extension->getType() != Identifier::SEQUENCE) {
+                //FIXME wrong offset index
+                throw new ParserException('Could not parse Certificate Extensions: Expected ASN.1 Sequence but got '.$extension->getTypeName(), $offsetIndex);
+            }
+
+            $tmpOffset += 1 + $extension->getNumberOfLengthOctets();
+            $children = $extension->getChildren();
+            if (count($children) < 2) {
+                throw new ParserException('Could not parse Certificate Extensions: Needs at least two child elements per extension sequence (object identifier and octet string)', $tmpOffset);
+            }
+            /** @var \FG\ASN1\ASNObject $objectIdentifier */
+            $objectIdentifier = $children[0];
+
+            /** @var OctetString $octetString */
+            $octetString = $children[1];
+
+            if ($objectIdentifier->getType() != Identifier::OBJECT_IDENTIFIER) {
+                throw new ParserException('Could not parse Certificate Extensions: Expected ASN.1 Object Identifier but got '.$extension->getTypeName(), $tmpOffset);
+            }
+
+            $tmpOffset += $objectIdentifier->getObjectLength();
+
+            if ($objectIdentifier->getContent() == OID::CERT_EXT_SUBJECT_ALT_NAME) {
+                $sans = SubjectAlternativeNames::fromBinary($binaryData, $tmpOffset);
+                $parsedObject->addSubjectAlternativeNames($sans);
+            } else {
+                // can now only parse SANs. There might be more in the future
+                $tmpOffset += $octetString->getObjectLength();
+            }
+        }
+
+        $parsedObject->getBinary(); // Determine the number of content octets and object sizes once (just to let the equality unit tests pass :/ )
+        return $parsedObject;
+    }
+}