From bfc0df86735f26a69192b7bb06ed881ab61e54c1 Mon Sep 17 00:00:00 2001
From: Chris Moore <dooglus@gmail.com>
Date: Sat, 1 Feb 2014 08:06:22 -0800
Subject: [PATCH] Allow a fixed list of change addresses.

---
 src/wallet.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/wallet.cpp b/src/wallet.cpp
index cd3e5af4c..604068ee7 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -1248,6 +1248,19 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend,
                     if (coinControl && !boost::get<CNoDestination>(&coinControl->destChange))
                         scriptChange.SetDestination(coinControl->destChange);
                         
+                    // send change to one of the specified change addresses
+                    else if (mapArgs.count("-change") && mapMultiArgs["-change"].size() > 0)
+                    {
+                        CBitcoinAddress address(mapMultiArgs["-change"][GetRandInt(mapMultiArgs["-change"].size())]);
+
+                        CKeyID keyID;
+                        if (!address.GetKeyID(keyID)) {
+                            strFailReason = _("Bad change address");
+                            return false;
+                        }
+
+                        scriptChange.SetDestination(keyID);
+                    }
                     // no coin control: send change to newly generated address
                     else
                     {