From f4691ab3a9d4f3321afa024984c03fe6e10bfdbc Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Wed, 30 Dec 2015 01:13:08 +0100
Subject: [RPC] Add wallet support for witness transactions (using P2SH)

Includes support for pushkeyhash wit v0 by Alex Morcos.
---
 src/rpc/misc.cpp | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

(limited to 'src/rpc/misc.cpp')

diff --git a/src/rpc/misc.cpp b/src/rpc/misc.cpp
index 09f5185781..f2a29416e6 100644
--- a/src/rpc/misc.cpp
+++ b/src/rpc/misc.cpp
@@ -312,6 +312,43 @@ UniValue createmultisig(const UniValue& params, bool fHelp)
     return result;
 }
 
+UniValue createwitnessaddress(const UniValue& params, bool fHelp)
+{
+    if (fHelp || params.size() < 1 || params.size() > 1)
+    {
+        string msg = "createwitnessaddress \"script\"\n"
+            "\nCreates a witness address for a particular script.\n"
+            "It returns a json object with the address and witness script.\n"
+
+            "\nArguments:\n"
+            "1. \"script\"       (string, required) A hex encoded script\n"
+
+            "\nResult:\n"
+            "{\n"
+            "  \"address\":\"multisigaddress\",  (string) The value of the new address (P2SH of witness script).\n"
+            "  \"witnessScript\":\"script\"      (string) The string value of the hex-encoded witness script.\n"
+            "}\n"
+        ;
+        throw runtime_error(msg);
+    }
+
+    if (!IsHex(params[0].get_str())) {
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Script must be hex-encoded");
+    }
+
+    std::vector<unsigned char> code = ParseHex(params[0].get_str());
+    CScript script(code.begin(), code.end());
+    CScript witscript = GetScriptForWitness(script);
+    CScriptID witscriptid(witscript);
+    CBitcoinAddress address(witscriptid);
+
+    UniValue result(UniValue::VOBJ);
+    result.push_back(Pair("address", address.ToString()));
+    result.push_back(Pair("witnessScript", HexStr(witscript.begin(), witscript.end())));
+
+    return result;
+}
+
 UniValue verifymessage(const UniValue& params, bool fHelp)
 {
     if (fHelp || params.size() != 3)
@@ -445,6 +482,7 @@ static const CRPCCommand commands[] =
     { "control",            "getinfo",                &getinfo,                true  }, /* uses wallet if enabled */
     { "util",               "validateaddress",        &validateaddress,        true  }, /* uses wallet if enabled */
     { "util",               "createmultisig",         &createmultisig,         true  },
+    { "util",               "createwitnessaddress",   &createwitnessaddress,   true  },
     { "util",               "verifymessage",          &verifymessage,          true  },
     { "util",               "signmessagewithprivkey", &signmessagewithprivkey, true  },
 
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