Merge branch '0.9.x' of git@gitorious.org:statusnet/mainline into 0.9.x

[quix0rs-gnu-social.git] / plugins / OStatus / classes / Magicsig.php

diff --git a/plugins/OStatus/classes/Magicsig.php b/plugins/OStatus/classes/Magicsig.php
index 9d9d3274472d03134aa86c2f266eb2e9c4a7d72e..5a46aeeb6e5f79b8b6ce59fab283685b51521d42 100644 (file)
--- a/plugins/OStatus/classes/Magicsig.php
+++ b/plugins/OStatus/classes/Magicsig.php
@@ -29,37 +29,96 @@
 
 require_once 'Crypt/RSA.php';
 
-class Magicsig
+class Magicsig extends Memcached_DataObject
 {
 
+    const PUBLICKEYREL = 'magic-public-key';
+    
+    public $__table = 'magicsig';
+
+    public $user_id;
     public $keypair;
+    public $alg;
     
-    public function __construct($init = null)
+    private $_rsa;
+
+    public function __construct($alg = 'RSA-SHA256')
     {
-        if (is_null($init)) {
-            $this->generate();
-        } else {
-            $this->fromString($init);
+        $this->alg = $alg;
+    }
+    
+    public /*static*/ function staticGet($k, $v=null)
+    {
+        $obj =  parent::staticGet(__CLASS__, $k, $v);
+        if (!empty($obj)) {
+            return Magicsig::fromString($obj->keypair);
         }
+
+        return $obj;
+    }
+
+
+    function table()
+    {
+        return array(
+            'user_id' => DB_DATAOBJECT_INT,
+            'keypair' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
+            'alg'     => DB_DATAOBJECT_STR
+        );
+    }
+
+    static function schemaDef()
+    {
+        return array(new ColumnDef('user_id', 'integer',
+                                   null, true, 'PRI'),
+                     new ColumnDef('keypair', 'varchar',
+                                   255, false),
+                     new ColumnDef('alg', 'varchar',
+                                   64, false));
+    }
+
+
+    function keys()
+    {
+        return array_keys($this->keyTypes());
+    }
+
+    function keyTypes()
+    {
+        return array('user_id' => 'K');
+    }
+
+    function sequenceKey() {
+        return array(false, false, false);
     }
 
+    function insert()
+    {
+        $this->keypair = $this->toString();
+
+        return parent::insert();
+    }
 
-    public function generate($key_length = 512)
+    public function generate($user_id, $key_length = 512)
     {
+        PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
+
         $keypair = new Crypt_RSA_KeyPair($key_length);
         $params['public_key'] = $keypair->getPublicKey();
         $params['private_key'] = $keypair->getPrivateKey();
 
-        PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
-        $this->keypair = new Crypt_RSA($params);
+        $this->_rsa = new Crypt_RSA($params);
         PEAR::popErrorHandling();
+
+        $this->user_id = $user_id;
+        $this->insert();
     }
 
 
     public function toString($full_pair = true)
     {
-        $public_key = $this->keypair->_public_key;
-        $private_key = $this->keypair->_private_key;
+        $public_key = $this->_rsa->_public_key;
+        $private_key = $this->_rsa->_private_key;
 
         $mod = base64_url_encode($public_key->getModulus());
         $exp = base64_url_encode($public_key->getExponent());
@@ -71,10 +130,12 @@ class Magicsig
         return 'RSA.' . $mod . '.' . $exp . $private_exp; 
     }
     
-    public function fromString($text)
+    public static function fromString($text)
     {
         PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
 
+        $magic_sig = new Magicsig();
+        
         // remove whitespace
         $text = preg_replace('/\s+/', '', $text);
 
@@ -85,40 +146,56 @@ class Magicsig
         
         $mod = base64_url_decode($matches[1]);
         $exp = base64_url_decode($matches[2]);
-        if ($matches[4]) {
+        if (!empty($matches[4])) {
             $private_exp = base64_url_decode($matches[4]);
+        } else {
+            $private_exp = false;
         }
 
         $params['public_key'] = new Crypt_RSA_KEY($mod, $exp, 'public');
         if ($params['public_key']->isError()) {
             $error = $params['public_key']->getLastError();
-            print $error->getMessage();
-            exit;
+            common_log(LOG_DEBUG, 'RSA Error: '. $error->getMessage());
+            return false;
         }
         if ($private_exp) {
             $params['private_key'] = new Crypt_RSA_KEY($mod, $private_exp, 'private');
             if ($params['private_key']->isError()) {
                 $error = $params['private_key']->getLastError();
-                print $error->getMessage();
-                exit;
+                common_log(LOG_DEBUG, 'RSA Error: '. $error->getMessage());
+                return false;
             }
         }
 
-        $this->keypair = new Crypt_RSA($params);
+        $magic_sig->_rsa = new Crypt_RSA($params);
         PEAR::popErrorHandling();
+
+        return $magic_sig;
     }
 
     public function getName()
     {
-        return 'RSA-SHA256';
+        return $this->alg;
     }
 
+    public function getHash()
+    {
+        switch ($this->alg) {
+
+        case 'RSA-SHA256':
+            return 'magicsig_sha256';
+        }
+
+    }
+    
     public function sign($bytes)
     {
-        $sig = $this->keypair->createSign($bytes, null, 'sha256');
-        if ($this->keypair->isError()) {
-            $error = $this->keypair->getLastError();
+        $hash = $this->getHash();
+        $sig = $this->_rsa->createSign($bytes, null, $hash);
+        if ($this->_rsa->isError()) {
+            $error = $this->_rsa->getLastError();
             common_log(LOG_DEBUG, 'RSA Error: '. $error->getMessage());
+            return false;
         }
 
         return $sig;
@@ -126,11 +203,12 @@ class Magicsig
 
     public function verify($signed_bytes, $signature)
     {
-        $result =  $this->keypair->validateSign($signed_bytes, $signature, null, 'sha256');
-        if ($this->keypair->isError()) {
+        $hash = $this->getHash();
+        $result =  $this->_rsa->validateSign($signed_bytes, $signature, null, $hash);
+        if ($this->_rsa->isError()) {
             $error = $this->keypair->getLastError();
-            //common_log(LOG_DEBUG, 'RSA Error: '. $error->getMessage());
-            print $error->getMessage();
+            common_log(LOG_DEBUG, 'RSA Error: '. $error->getMessage());
+            return false;
         }
         return $result;
     }
@@ -139,7 +217,7 @@ class Magicsig
 
 // Define a sha256 function for hashing
 // (Crypt_RSA should really be updated to use hash() )
-function sha256($bytes)
+function magicsig_sha256($bytes)
 {
     return hash('sha256', $bytes);
 }