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New createmultisig rpc command

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This is to support the signrawtransaction API call; given the public
keys involved in a multisig transaction, this gives back the redeemScript
needed to sign it.
This commit is contained in:
Gavin Andresen 2012-09-10 09:32:40 -04:00
parent 03346a61b1
commit 34226be7a8
3 changed files with 52 additions and 15 deletions
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3
src/bitcoinrpc.cpp
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@ -234,6 +234,7 @@ static const CRPCCommand vRPCCommands[] =
{ "sendfrom", &sendfrom, false, false },
{ "sendmany", &sendmany, false, false },
{ "addmultisigaddress", &addmultisigaddress, false, false },
{ "createmultisig", &createmultisig, true, true },
{ "getrawmempool", &getrawmempool, true, false },
{ "getblock", &getblock, false, false },
{ "getblockhash", &getblockhash, false, false },
@ -1160,6 +1161,8 @@ Array RPCConvertValues(const std::string &strMethod, const std::vector<std::stri
if (strMethod == "sendmany" && n > 2) ConvertTo<boost::int64_t>(params[2]);
if (strMethod == "addmultisigaddress" && n > 0) ConvertTo<boost::int64_t>(params[0]);
if (strMethod == "addmultisigaddress" && n > 1) ConvertTo<Array>(params[1]);
if (strMethod == "createmultisig" && n > 0) ConvertTo<boost::int64_t>(params[0]);
if (strMethod == "createmultisig" && n > 1) ConvertTo<Array>(params[1]);
if (strMethod == "listunspent" && n > 0) ConvertTo<boost::int64_t>(params[0]);
if (strMethod == "listunspent" && n > 1) ConvertTo<boost::int64_t>(params[1]);
if (strMethod == "listunspent" && n > 2) ConvertTo<Array>(params[2]);

1
src/bitcoinrpc.h
View file

@ -158,6 +158,7 @@ extern json_spirit::Value movecmd(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value sendfrom(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value sendmany(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value addmultisigaddress(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value createmultisig(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value listreceivedbyaddress(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value listreceivedbyaccount(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value listtransactions(const json_spirit::Array& params, bool fHelp);

63
src/rpcwallet.cpp
View file

@ -702,22 +702,13 @@ Value sendmany(const Array& params, bool fHelp)
return wtx.GetHash().GetHex();
}
Value addmultisigaddress(const Array& params, bool fHelp)
//
// Used by addmultisigaddress / createmultisig:
//
static CScript _createmultisig(const Array& params)
{
if (fHelp || params.size() < 2 || params.size() > 3)
{
string msg = "addmultisigaddress <nrequired> <'[\"key\",\"key\"]'> [account]\n"
"Add a nrequired-to-sign multisignature address to the wallet\"\n"
"each key is a Bitcoin address or hex-encoded public key\n"
"If [account] is specified, assign address to [account].";
throw runtime_error(msg);
}
int nRequired = params[0].get_int();
const Array& keys = params[1].get_array();
string strAccount;
if (params.size() > 2)
strAccount = AccountFromValue(params[2]);
// Gather public keys
if (nRequired < 1)
@ -760,10 +751,28 @@ Value addmultisigaddress(const Array& params, bool fHelp)
throw runtime_error(" Invalid public key: "+ks);
}
}
CScript result;
result.SetMultisig(nRequired, pubkeys);
return result;
}
Value addmultisigaddress(const Array& params, bool fHelp)
{
if (fHelp || params.size() < 2 || params.size() > 3)
{
string msg = "addmultisigaddress <nrequired> <'[\"key\",\"key\"]'> [account]\n"
"Add a nrequired-to-sign multisignature address to the wallet\"\n"
"each key is a Bitcoin address or hex-encoded public key\n"
"If [account] is specified, assign address to [account].";
throw runtime_error(msg);
}
string strAccount;
if (params.size() > 2)
strAccount = AccountFromValue(params[2]);
// Construct using pay-to-script-hash:
CScript inner;
inner.SetMultisig(nRequired, pubkeys);
CScript inner = _createmultisig(params);
CScriptID innerID = inner.GetID();
pwalletMain->AddCScript(inner);
@ -771,6 +780,30 @@ Value addmultisigaddress(const Array& params, bool fHelp)
return CBitcoinAddress(innerID).ToString();
}
Value createmultisig(const Array& params, bool fHelp)
{
if (fHelp || params.size() < 2 || params.size() > 2)
{
string msg = "createmultisig <nrequired> <'[\"key\",\"key\"]'>\n"
"Creates a multi-signature address and returns a json object\n"
"with keys:\n"
"address : bitcoin address\n"
"redeemScript : hex-encoded redemption script";
throw runtime_error(msg);
}
// Construct using pay-to-script-hash:
CScript inner = _createmultisig(params);
CScriptID innerID = inner.GetID();
CBitcoinAddress address(innerID);
Object result;
result.push_back(Pair("address", address.ToString()));
result.push_back(Pair("redeemScript", HexStr(inner.begin(), inner.end())));
return result;
}
struct tallyitem
{