sweep command (does not broadcast)

lib/commands.py

@@ -102,6 +102,7 @@ register_command('verifymessage',        3,-1, False, False, False, 'Verifies a
 register_command('daemon',               1, 1, True, False, False,  '<stop|status>')
 register_command('getproof',             1, 1, True, False, False, 'get merkle proof', 'getproof <address>')
 register_command('getutxoaddress',       2, 2, True, False, False, 'get the address of an unspent transaction output','getutxoaddress <txid> <pos>')
+register_command('sweep',                2, 3, True, False, False, 'Sweep a private key.', 'sweep privkey addr [fee]')
 
 
 
@@ -262,6 +263,21 @@ class Commands:
         return out
 
 
+    def sweep(self, privkey, to_address, fee = 0.0001):
+        pubkey = public_key_from_private_key(privkey)
+        address = address_from_private_key(privkey)
+        pay_script = Transaction.pay_script(address)
+        unspent = self.network.synchronous_get([ ('blockchain.address.listunspent',[address])])[0]
+        if not unspent:
+            return
+        total = sum( map(lambda x:int(x.get('value')), unspent) ) - int(Decimal(fee)*100000000)
+        inputs = map(lambda i: {'prevout_hash': i['tx_hash'], 'prevout_n':i['tx_pos'], 'scriptPubKey':pay_script, 'redeemPubkey':pubkey}, unspent)
+        outputs = [(to_address, total)]
+        tx = Transaction.from_io(inputs, outputs)
+        tx.sign({ pubkey:privkey })
+        return tx
+
+
     def signmessage(self, address, message):
         return self.wallet.sign_message(address, message, self.password)
 

lib/transaction.py

@@ -425,6 +425,25 @@ class Transaction:
 
         return s
 
+
+    @classmethod
+    def pay_script(self, addr):
+        addrtype, hash_160 = bc_address_to_hash_160(addr)
+        if addrtype == 0:
+            script = '76a9'                                      # op_dup, op_hash_160
+            script += '14'                                       # push 0x14 bytes
+            script += hash_160.encode('hex')
+            script += '88ac'                                     # op_equalverify, op_checksig
+        elif addrtype == 5:
+            script = 'a9'                                        # op_hash_160
+            script += '14'                                       # push 0x14 bytes
+            script += hash_160.encode('hex')
+            script += '87'                                       # op_equal
+        else:
+            raise
+        return script
+
+
     @classmethod
     def serialize( klass, inputs, outputs, for_sig = None ):
 
@@ -475,20 +494,7 @@ class Transaction:
         for output in outputs:
             addr, amount = output
             s += int_to_hex( amount, 8)                              # amount
-            addrtype, hash_160 = bc_address_to_hash_160(addr)
-            if addrtype == 0:
-                script = '76a9'                                      # op_dup, op_hash_160
-                script += '14'                                       # push 0x14 bytes
-                script += hash_160.encode('hex')
-                script += '88ac'                                     # op_equalverify, op_checksig
-            elif addrtype == 5:
-                script = 'a9'                                        # op_hash_160
-                script += '14'                                       # push 0x14 bytes
-                script += hash_160.encode('hex')
-                script += '87'                                       # op_equal
-            else:
-                raise
-            
+            script = klass.pay_script(addr)
             s += var_int( len(script)/2 )                           #  script length
             s += script                                             #  script
         s += int_to_hex(0,4)                                        #  lock time