From 3227122ac3ed5089e32346a98166dead13c0b3a5 Mon Sep 17 00:00:00 2001
From: James Walker <walkah@walkah.net>
Date: Fri, 26 Mar 2010 13:37:46 -0400
Subject: [PATCH] move base64_url_(encode|decode) to static functions in
 Magicsig

---
 plugins/OStatus/classes/Magicsig.php  | 34 ++++++++++++++-------------
 plugins/OStatus/lib/magicenvelope.php |  6 ++---
 2 files changed, 21 insertions(+), 19 deletions(-)

diff --git a/plugins/OStatus/classes/Magicsig.php b/plugins/OStatus/classes/Magicsig.php
index 864fef6285..f8c56a05f3 100644
--- a/plugins/OStatus/classes/Magicsig.php
+++ b/plugins/OStatus/classes/Magicsig.php
@@ -129,11 +129,11 @@ class Magicsig extends Memcached_DataObject
 
     public function toString($full_pair = true)
     {
-        $mod = base64_url_encode($this->publicKey->modulus->toBytes());
-        $exp = base64_url_encode($this->publicKey->exponent->toBytes());
+        $mod = Magicsig::base64_url_encode($this->publicKey->modulus->toBytes());
+        $exp = Magicsig::base64_url_encode($this->publicKey->exponent->toBytes());
         $private_exp = '';
         if ($full_pair && $this->privateKey->exponent->toBytes()) {
-            $private_exp = '.' . base64_url_encode($this->privateKey->exponent->toBytes());
+            $private_exp = '.' . Magicsig::base64_url_encode($this->privateKey->exponent->toBytes());
         }
 
         return 'RSA.' . $mod . '.' . $exp . $private_exp; 
@@ -174,9 +174,9 @@ class Magicsig extends Memcached_DataObject
         $rsa = new Crypt_RSA();
         $rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;
         $rsa->setHash('sha256');
-        $rsa->modulus = new Math_BigInteger(base64_url_decode($mod), 256);
+        $rsa->modulus = new Math_BigInteger(Magicsig::base64_url_decode($mod), 256);
         $rsa->k = strlen($rsa->modulus->toBytes());
-        $rsa->exponent = new Math_BigInteger(base64_url_decode($exp), 256);
+        $rsa->exponent = new Math_BigInteger(Magicsig::base64_url_decode($exp), 256);
 
         if ($type == 'private') {
             $this->privateKey = $rsa;
@@ -203,23 +203,25 @@ class Magicsig extends Memcached_DataObject
     public function sign($bytes)
     {
         $sig = $this->privateKey->sign($bytes);
-        return base64_url_encode($sig);
+        return Magicsig::base64_url_encode($sig);
     }
 
     public function verify($signed_bytes, $signature)
     {
-        $signature = base64_url_decode($signature);
+        $signature = Magicsig::base64_url_decode($signature);
         return $this->publicKey->verify($signed_bytes, $signature);
     }
-        
+
+
+    public static function base64_url_encode($input)
+    {
+        return strtr(base64_encode($input), '+/', '-_');
+    }
+
+    public static function base64_url_decode($input)
+    {
+        return base64_decode(strtr($input, '-_', '+/'));
+    }
 }
 
-function base64_url_encode($input)
-{
-    return strtr(base64_encode($input), '+/', '-_');
-}
 
-function base64_url_decode($input)
-{
-    return base64_decode(strtr($input, '-_', '+/'));
-}
diff --git a/plugins/OStatus/lib/magicenvelope.php b/plugins/OStatus/lib/magicenvelope.php
index 799b5e3079..f39686b717 100644
--- a/plugins/OStatus/lib/magicenvelope.php
+++ b/plugins/OStatus/lib/magicenvelope.php
@@ -83,7 +83,7 @@ class MagicEnvelope
     public function signMessage($text, $mimetype, $keypair)
     {
         $signature_alg = Magicsig::fromString($keypair);
-        $armored_text = base64_url_encode($text);
+        $armored_text = Magicsig::base64_url_encode($text);
 
         return array(
             'data' => $armored_text,
@@ -121,7 +121,7 @@ class MagicEnvelope
     public function unfold($env)
     {
         $dom = new DOMDocument();
-        $dom->loadXML(base64_url_decode($env['data']));
+        $dom->loadXML(Magicsig::base64_url_decode($env['data']));
 
         if ($dom->documentElement->tagName != 'entry') {
             return false;
@@ -178,7 +178,7 @@ class MagicEnvelope
             return false;
         }
 
-        $text = base64_url_decode($env['data']);
+        $text = Magicsig::base64_url_decode($env['data']);
         $signer_uri = $this->getAuthor($text);
 
         try {