CString CAmiko::addPaymentRequest(const CString &receipt, uint64_t amount)
{
//TODO: check number of existing incoming payments.
//If it's too large, raise an exception.
CString ID = getSecureRandom(32).hexDump();
CTransaction t = CTransaction(receipt, amount);
t.m_nonce = getSecureRandom(TRANSACTION_NONCE_LENGTH);
{
CMutexLocker lock(m_Settings);
t.m_meetingPoint = CRIPEMD160(
CSHA256(m_Settings.m_Value.m_MeetingPointPubKey).toBinBuffer()
);
}
t.calculateTokenAndHash();
{
CMutexLocker lock(m_IncomingPayments);
m_IncomingPayments.m_Value[ID] = t;
}
CMutexLocker lock(m_Settings);
return m_Settings.m_Value.getPaymentURL(ID);
}
static void RIPEMD160(benchmark::State &state)
{
uint8_t hash[CRIPEMD160::OUTPUT_SIZE];
std::vector<uint8_t> in(BUFFER_SIZE, 0);
while (state.KeepRunning())
CRIPEMD160().Write(in.data(), in.size()).Finalize(hash);
}
/**
* Sign scriptPubKey using signature made with creator.
* Signatures are returned in scriptSigRet (or returns false if scriptPubKey can't be signed),
* unless whichTypeRet is TX_SCRIPTHASH, in which case scriptSigRet is the redemption script.
* Returns false if scriptPubKey could not be completely satisfied.
*/
static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& scriptPubKey,
std::vector<valtype>& ret, txnouttype& whichTypeRet, SigVersion sigversion)
{
CScript scriptRet;
uint160 h160;
ret.clear();
std::vector<valtype> vSolutions;
if (!Solver(scriptPubKey, whichTypeRet, vSolutions))
return false;
CKeyID keyID;
switch (whichTypeRet)
{
case TX_NONSTANDARD:
case TX_NULL_DATA:
case TX_WITNESS_UNKNOWN:
return false;
case TX_PUBKEY:
keyID = CPubKey(vSolutions[0]).GetID();
return Sign1(provider, keyID, creator, scriptPubKey, ret, sigversion);
case TX_PUBKEYHASH:
keyID = CKeyID(uint160(vSolutions[0]));
if (!Sign1(provider, keyID, creator, scriptPubKey, ret, sigversion))
return false;
else
{
CPubKey vch;
provider.GetPubKey(keyID, vch);
ret.push_back(ToByteVector(vch));
}
return true;
case TX_SCRIPTHASH:
if (provider.GetCScript(uint160(vSolutions[0]), scriptRet)) {
ret.push_back(std::vector<unsigned char>(scriptRet.begin(), scriptRet.end()));
return true;
}
return false;
case TX_MULTISIG:
ret.push_back(valtype()); // workaround CHECKMULTISIG bug
return (SignN(provider, vSolutions, creator, scriptPubKey, ret, sigversion));
case TX_WITNESS_V0_KEYHASH:
ret.push_back(vSolutions[0]);
return true;
case TX_WITNESS_V0_SCRIPTHASH:
CRIPEMD160().Write(&vSolutions[0][0], vSolutions[0].size()).Finalize(h160.begin());
if (provider.GetCScript(h160, scriptRet)) {
ret.push_back(std::vector<unsigned char>(scriptRet.begin(), scriptRet.end()));
return true;
}
return false;
default:
return false;
}
}
void TestRIPEMD160(const std::string &in, const std::string &hexout) { TestVector(CRIPEMD160(), in, ParseHex(hexout));}
/**
* Sign scriptPubKey using signature made with creator.
* Signatures are returned in scriptSigRet (or returns false if scriptPubKey can't be signed),
* unless whichTypeRet is TX_SCRIPTHASH, in which case scriptSigRet is the redemption script.
* Returns false if scriptPubKey could not be completely satisfied.
*/
static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& scriptPubKey,
std::vector<valtype>& ret, txnouttype& whichTypeRet, SigVersion sigversion, SignatureData& sigdata)
{
CScript scriptRet;
uint160 h160;
ret.clear();
std::vector<unsigned char> sig;
std::vector<valtype> vSolutions;
if (!Solver(scriptPubKey, whichTypeRet, vSolutions))
return false;
switch (whichTypeRet)
{
case TX_NONSTANDARD:
case TX_NULL_DATA:
case TX_WITNESS_UNKNOWN:
return false;
case TX_PUBKEY:
if (!CreateSig(creator, sigdata, provider, sig, CPubKey(vSolutions[0]), scriptPubKey, sigversion)) return false;
ret.push_back(std::move(sig));
return true;
case TX_PUBKEYHASH: {
CKeyID keyID = CKeyID(uint160(vSolutions[0]));
CPubKey pubkey;
GetPubKey(provider, sigdata, keyID, pubkey);
if (!CreateSig(creator, sigdata, provider, sig, pubkey, scriptPubKey, sigversion)) return false;
ret.push_back(std::move(sig));
ret.push_back(ToByteVector(pubkey));
return true;
}
case TX_SCRIPTHASH:
if (GetCScript(provider, sigdata, uint160(vSolutions[0]), scriptRet)) {
ret.push_back(std::vector<unsigned char>(scriptRet.begin(), scriptRet.end()));
return true;
}
return false;
case TX_MULTISIG: {
size_t required = vSolutions.front()[0];
ret.push_back(valtype()); // workaround CHECKMULTISIG bug
for (size_t i = 1; i < vSolutions.size() - 1; ++i) {
CPubKey pubkey = CPubKey(vSolutions[i]);
if (ret.size() < required + 1 && CreateSig(creator, sigdata, provider, sig, pubkey, scriptPubKey, sigversion)) {
ret.push_back(std::move(sig));
}
}
bool ok = ret.size() == required + 1;
for (size_t i = 0; i + ret.size() < required + 1; ++i) {
ret.push_back(valtype());
}
return ok;
}
case TX_WITNESS_V0_KEYHASH:
ret.push_back(vSolutions[0]);
return true;
case TX_WITNESS_V0_SCRIPTHASH:
CRIPEMD160().Write(&vSolutions[0][0], vSolutions[0].size()).Finalize(h160.begin());
if (GetCScript(provider, sigdata, h160, scriptRet)) {
ret.push_back(std::vector<unsigned char>(scriptRet.begin(), scriptRet.end()));
return true;
}
return false;
default:
return false;
}
}
isminetype IsMine(const CKeyStore &keystore, const CScript& scriptPubKey, bool& isInvalid, SigVersion sigversion)
{
std::vector<valtype> vSolutions;
txnouttype whichType;
if (!Solver(scriptPubKey, whichType, vSolutions)) {
if (keystore.HaveWatchOnly(scriptPubKey))
return ISMINE_WATCH_UNSOLVABLE;
return ISMINE_NO;
}
CKeyID keyID;
switch (whichType)
{
case TX_NONSTANDARD:
case TX_NULL_DATA:
break;
case TX_PUBKEY:
keyID = CPubKey(vSolutions[0]).GetID();
if (sigversion != SIGVERSION_BASE && vSolutions[0].size() != 33) {
isInvalid = true;
return ISMINE_NO;
}
if (keystore.HaveKey(keyID))
return ISMINE_SPENDABLE;
break;
case TX_WITNESS_V0_KEYHASH:
{
if (!keystore.HaveCScript(CScriptID(CScript() << OP_0 << vSolutions[0]))) {
// We do not support bare witness outputs unless the P2SH version of it would be
// acceptable as well. This protects against matching before segwit activates.
// This also applies to the P2WSH case.
break;
}
isminetype ret = ::IsMine(keystore, GetScriptForDestination(CKeyID(uint160(vSolutions[0]))), isInvalid, SIGVERSION_WITNESS_V0);
if (ret == ISMINE_SPENDABLE || ret == ISMINE_WATCH_SOLVABLE || (ret == ISMINE_NO && isInvalid))
return ret;
break;
}
case TX_PUBKEYHASH:
keyID = CKeyID(uint160(vSolutions[0]));
if (sigversion != SIGVERSION_BASE) {
CPubKey pubkey;
if (keystore.GetPubKey(keyID, pubkey) && !pubkey.IsCompressed()) {
isInvalid = true;
return ISMINE_NO;
}
}
if (keystore.HaveKey(keyID))
return ISMINE_SPENDABLE;
break;
case TX_SCRIPTHASH:
{
CScriptID scriptID = CScriptID(uint160(vSolutions[0]));
CScript subscript;
if (keystore.GetCScript(scriptID, subscript)) {
isminetype ret = IsMine(keystore, subscript, isInvalid);
if (ret == ISMINE_SPENDABLE || ret == ISMINE_WATCH_SOLVABLE || (ret == ISMINE_NO && isInvalid))
return ret;
}
break;
}
case TX_WITNESS_V0_SCRIPTHASH:
{
if (!keystore.HaveCScript(CScriptID(CScript() << OP_0 << vSolutions[0]))) {
break;
}
uint160 hash;
CRIPEMD160().Write(&vSolutions[0][0], vSolutions[0].size()).Finalize(hash.begin());
CScriptID scriptID = CScriptID(hash);
CScript subscript;
if (keystore.GetCScript(scriptID, subscript)) {
isminetype ret = IsMine(keystore, subscript, isInvalid, SIGVERSION_WITNESS_V0);
if (ret == ISMINE_SPENDABLE || ret == ISMINE_WATCH_SOLVABLE || (ret == ISMINE_NO && isInvalid))
return ret;
}
break;
}
case TX_MULTISIG:
{
// Only consider transactions "mine" if we own ALL the
// keys involved. Multi-signature transactions that are
// partially owned (somebody else has a key that can spend
// them) enable spend-out-from-under-you attacks, especially
// in shared-wallet situations.
std::vector<valtype> keys(vSolutions.begin()+1, vSolutions.begin()+vSolutions.size()-1);
if (sigversion != SIGVERSION_BASE) {
for (size_t i = 0; i < keys.size(); i++) {
if (keys[i].size() != 33) {
isInvalid = true;
return ISMINE_NO;
}
}
}
if (HaveKeys(keys, keystore) == keys.size())
return ISMINE_SPENDABLE;
break;
}
}
if (keystore.HaveWatchOnly(scriptPubKey)) {
// TODO: This could be optimized some by doing some work after the above solver
SignatureData sigs;
return ProduceSignature(DummySignatureCreator(&keystore), scriptPubKey, sigs) ? ISMINE_WATCH_SOLVABLE : ISMINE_WATCH_UNSOLVABLE;
}
return ISMINE_NO;
}
