Allow creating txs without relaying to the network

monero/account.py

@@ -36,16 +36,21 @@ class Account(object):
     def get_transactions_out(self):
         return self._backend.get_transactions_out(account=self.index)
 
-    def transfer(self, address, amount, priority=prio.NORMAL, ringsize=5, payment_id=None, unlock_time=0):
+    def transfer(self, address, amount,
+            priority=prio.NORMAL, ringsize=5, payment_id=None, unlock_time=0,
+            relay=True):
         return self._backend.transfer(
             [(address, amount)],
             priority,
             ringsize,
             payment_id,
             unlock_time,
-            account=self.index)
+            account=self.index,
+            relay=relay)
 
-    def transfer_multiple(self, destinations, priority=prio.NORMAL, ringsize=5, payment_id=None, unlock_time=0):
+    def transfer_multiple(self, destinations,
+            priority=prio.NORMAL, ringsize=5, payment_id=None, unlock_time=0,
+            relay=True):
         """
         destinations = [(address, amount), ...]
         """
@@ -55,4 +60,5 @@ class Account(object):
             ringsize,
             payment_id,
             unlock_time,
-            account=self.index)
+            account=self.index,
+            relay=relay)

monero/backends/jsonrpc.py

@@ -1,3 +1,4 @@
+import binascii
 from datetime import datetime
 import operator
 import json
@@ -115,7 +116,9 @@ class JSONRPCWallet(object):
             'blob': tx.get('blob', None),
         }
 
-    def transfer(self, destinations, priority, ringsize, payment_id=None, unlock_time=0, account=0):
+    def transfer(self, destinations, priority, ringsize,
+            payment_id=None, unlock_time=0, account=0,
+            relay=True):
         data = {
             'account_index': account,
             'destinations': list(map(
@@ -127,6 +130,7 @@ class JSONRPCWallet(object):
             'get_tx_keys': True,
             'get_tx_hex': True,
             'new_algorithm': True,
+            'do_not_relay': not relay,
         }
         if payment_id is not None:
             data['payment_id'] = str(PaymentID(payment_id))

monero/wallet.py

@@ -52,16 +52,21 @@ class Wallet(object):
     def get_transactions_out(self):
         return self.accounts[0].get_transactions_out()
 
-    def transfer(self, address, amount, priority=prio.NORMAL, ringsize=5, payment_id=None, unlock_time=0):
+    def transfer(self, address, amount,
+            priority=prio.NORMAL, ringsize=5, payment_id=None, unlock_time=0,
+            relay=True):
         return self.accounts[0].transfer(
                 address,
                 amount,
                 priority=priority,
                 ringsize=ringsize,
                 payment_id=None,
-                unlock_time=unlock_time)
+                unlock_time=unlock_time,
+                relay=relay)
 
-    def transfer_multiple(self, destinations, priority=prio.NORMAL, ringsize=5, payment_id=None, unlock_time=0):
+    def transfer_multiple(self, destinations,
+            priority=prio.NORMAL, ringsize=5, payment_id=None, unlock_time=0,
+            relay=True):
         """
         destinations = [(address, amount), ...]
         """
@@ -70,4 +75,5 @@ class Wallet(object):
                 priority=priority,
                 ringsize=ringsize,
                 payment_id=None,
-                unlock_time=unlock_time)
+                unlock_time=unlock_time,
+                relay=relay)

utils/transfer.py

@@ -2,6 +2,7 @@ import argparse
 from decimal import Decimal
 import operator
 import logging
+import os
 import random
 import re
 
@@ -34,6 +35,9 @@ argsparser.add_argument('-r', dest='ring_size', type=int, default=5, help="Ring
 argsparser.add_argument('-i', dest='payment_id', nargs='?', type=PaymentID,
     const=PaymentID(random.randint(0, 2**256)),
     help="Payment ID")
+argsparser.add_argument('--save', dest='outdir', nargs='?', default=None, const='.',
+    help="Save to file, optionally follow by destination directory (default is .)\n"
+        "Transaction will be not relayed to the network.")
 argsparser.add_argument('destinations', metavar='address:amount', nargs='+', type=destpair,
     help="Destination address and amount (one or more pairs)")
 args = argsparser.parse_args()
@@ -48,9 +52,16 @@ logging.basicConfig(level=level, format="%(asctime)-15s %(message)s")
 
 w = Wallet(JSONRPCWallet(**args.daemon_url))
 txfrs = w.accounts[args.account].transfer_multiple(
-    args.destinations, priority=prio, mixin=args.ring_size, payment_id=args.payment_id)
+    args.destinations, priority=prio, ringsize=args.ring_size, payment_id=args.payment_id,
+    relay=args.outdir is None)
 for tx in txfrs:
     print(u"Transaction {hash}:\nXMR: {amount:21.12f} @ {fee:13.12f} fee\n"
        u"Payment ID: {payment_id}\nTx key:     {key}\nSize:       {size} B".format(
             hash=tx.hash, amount=tx.amount, fee=tx.fee,
-            payment_id=tx.payment_id, key=tx.key, size=len(tx.blob) >> 1))
+            payment_id=tx.payment_id, key=tx.key, size=len(tx.blob)))
+    if args.outdir:
+        outname = os.path.join(args.outdir, tx.hash + '.tx')
+        outfile = open(outname, 'wb')
+        outfile.write(tx.blob)
+        outfile.close()
+        print(u"Transaction saved to {}".format(outname))