Implement OpenPGP_SignaturePacket_EmbeddedSignaturePacket

lib/openpgp.php

@@ -719,8 +719,19 @@ class OpenPGP_SignaturePacket_SignatureTargetPacket extends OpenPGP_SignaturePac
   // TODO
 }
 
-class OpenPGP_SignaturePacket_EmbeddedSignaturePacket extends OpenPGP_SignaturePacket_Subpacket {
-  // TODO
+class OpenPGP_SignaturePacket_EmbeddedSignaturePacket extends OpenPGP_SignaturePacket {
+  // TODO: This is duplicated from subpacket... improve?
+  function __construct($data=NULL) {
+    parent::__construct($data);
+    $this->tag = array_search(substr(substr(get_class($this), 8+16), 0, -6), OpenPGP_SignaturePacket::$subpacket_types);
+  }
+
+  function header_and_body() {
+    $body = $this->body(); // Get body first, we will need it's length
+    $size = chr(255).pack('N', strlen($body)+1); // Use 5-octet lengths + 1 for tag as first packet body octet
+    $tag = chr($this->tag);
+    return array('header' => $size.$tag, 'body' => $body);
+  }
 }
 
 /**