/**
* Used by addmultisigaddress / createmultisig:
*/
CScript _createmultisig_redeemScript(CWallet * const pwallet, const UniValue& params)
{
int nRequired = params[0].get_int();
const UniValue& keys = params[1].get_array();
// Gather public keys
if (nRequired < 1)
throw std::runtime_error("a multisignature address must require at least one key to redeem");
if ((int)keys.size() < nRequired)
throw std::runtime_error(
strprintf("not enough keys supplied "
"(got %u keys, but need at least %d to redeem)", keys.size(), nRequired));
if (keys.size() > 16)
throw std::runtime_error("Number of addresses involved in the multisignature address creation > 16\nReduce the number");
std::vector<CPubKey> pubkeys;
pubkeys.resize(keys.size());
for (unsigned int i = 0; i < keys.size(); i++)
{
const std::string& ks = keys[i].get_str();
#ifdef ENABLE_WALLET
// Case 1: Bitcoin address and we have full public key:
CBitcoinAddress address(ks);
if (pwallet && address.IsValid()) {
CKeyID keyID;
if (!address.GetKeyID(keyID))
throw std::runtime_error(
strprintf("%s does not refer to a key",ks));
CPubKey vchPubKey;
if (!pwallet->GetPubKey(keyID, vchPubKey)) {
throw std::runtime_error(
strprintf("no full public key for address %s",ks));
}
if (!vchPubKey.IsFullyValid())
throw std::runtime_error(" Invalid public key: "+ks);
pubkeys[i] = vchPubKey;
}
// Case 2: hex public key
else
#endif
if (IsHex(ks))
{
CPubKey vchPubKey(ParseHex(ks));
if (!vchPubKey.IsFullyValid())
throw std::runtime_error(" Invalid public key: "+ks);
pubkeys[i] = vchPubKey;
}
else
{
throw std::runtime_error(" Invalid public key: "+ks);
}
}
CScript result = GetScriptForMultisig(nRequired, pubkeys);
if (result.size() > MAX_SCRIPT_ELEMENT_SIZE)
throw std::runtime_error(
strprintf("redeemScript exceeds size limit: %d > %d", result.size(), MAX_SCRIPT_ELEMENT_SIZE));
return result;
}
bool CScriptCompressor::IsToPubKey(CPubKey &pubkey) const {
if (script.size() == 35 && script[0] == 33 && script[34] == OP_CHECKSIG &&
(script[1] == 0x02 || script[1] == 0x03)) {
pubkey.Set(&script[1], &script[34]);
return true;
}
if (script.size() == 67 && script[0] == 65 && script[66] == OP_CHECKSIG &&
script[1] == 0x04) {
pubkey.Set(&script[1], &script[66]);
// if not fully valid, a case that would not be compressible
return pubkey.IsFullyValid();
}
return false;
}
static bool ExtractPubKey(const CScript &dest, CPubKey& pubKeyOut)
{
//TODO: Use Solver to extract this?
CScript::const_iterator pc = dest.begin();
opcodetype opcode;
std::vector<unsigned char> vch;
if (!dest.GetOp(pc, opcode, vch) || vch.size() < 33 || vch.size() > 65)
return false;
pubKeyOut = CPubKey(vch);
if (!pubKeyOut.IsFullyValid())
return false;
if (!dest.GetOp(pc, opcode, vch) || opcode != OP_CHECKSIG || dest.GetOp(pc, opcode, vch))
return false;
return true;
}
// Retrieves a public key for an address from the given CKeyStore
CPubKey AddrToPubKey(CKeyStore* const keystore, const std::string& addr_in)
{
CTxDestination dest = DecodeDestination(addr_in);
if (!IsValidDestination(dest)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid address: " + addr_in);
}
CKeyID key = GetKeyForDestination(*keystore, dest);
if (key.IsNull()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("%s does not refer to a key", addr_in));
}
CPubKey vchPubKey;
if (!keystore->GetPubKey(key, vchPubKey)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("no full public key for address %s", addr_in));
}
if (!vchPubKey.IsFullyValid()) {
throw JSONRPCError(RPC_INTERNAL_ERROR, "Wallet contains an invalid public key");
}
return vchPubKey;
}
bool MultisigDialog::createRedeemScript(int m, vector<string> vKeys, CScript& redeemRet, string& errorRet)
{
try{
int n = vKeys.size();
//gather pub keys
if (n < 1)
throw runtime_error("a Multisignature address must require at least one key to redeem");
if (n < m)
throw runtime_error(
strprintf("not enough keys supplied "
"(got %d keys, but need at least %d to redeem)",
m, n));
if (n > 15)
throw runtime_error("Number of addresses involved in the Multisignature address creation > 15\nReduce the number");
vector<CPubKey> pubkeys;
pubkeys.resize(n);
int i = 0;
for(vector<string>::iterator it = vKeys.begin(); it != vKeys.end(); ++it) {
string keyString = *it;
#ifdef ENABLE_WALLET
// Case 1: PIVX address and we have full public key:
CBitcoinAddress address(keyString);
if (pwalletMain && address.IsValid()) {
CKeyID keyID;
if (!address.GetKeyID(keyID)) {
throw runtime_error(
strprintf("%s does not refer to a key", keyString));
}
CPubKey vchPubKey;
if (!pwalletMain->GetPubKey(keyID, vchPubKey))
throw runtime_error(
strprintf("no full public key for address %s", keyString));
if (!vchPubKey.IsFullyValid()){
string sKey = keyString.empty()?"(empty)":keyString;
throw runtime_error(" Invalid public key: " + sKey );
}
pubkeys[i++] = vchPubKey;
}
//case 2: hex pub key
else
#endif
if (IsHex(keyString)) {
CPubKey vchPubKey(ParseHex(keyString));
if (!vchPubKey.IsFullyValid()){
throw runtime_error(" Invalid public key: " + keyString);
}
pubkeys[i++] = vchPubKey;
} else {
throw runtime_error(" Invalid public key: " + keyString);
}
}
//populate redeem script
//OP_N for required signatures
redeemRet << redeemRet.EncodeOP_N(m);
//public keys
for(CPubKey& key : pubkeys){
vector<unsigned char> vKey= ToByteVector(key);
redeemRet << vKey;
}
//OP_N for total pubkeys
redeemRet << redeemRet.EncodeOP_N(pubkeys.size());
redeemRet << OP_CHECKMULTISIG;
return true;
}catch(const runtime_error& e){
errorRet = string(e.what());
return false;
}
}
