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#include <stdint.h>
#include <boost/assert.hpp>
#include <boost/assign/list_of.hpp>
#include <boost/assign/list_inserter.hpp>
#include <boost/assign/std/vector.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/foreach.hpp>
#include "../main.h"
#include "../script.h"
#include "../wallet.h"
using namespace std;
// Test routines internal to script.cpp:
extern uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType);
extern bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOps,
int nHashType, bool fStrictOpEval);
BOOST_AUTO_TEST_SUITE(script_op_eval_tests)
BOOST_AUTO_TEST_CASE(script_op_eval1)
{
// OP_EVAL looks like this:
// scriptSig: <sig> <sig...> <serialized_script>
// scriptPubKey: DUP HASH160 <hash> EQUALVERIFY EVAL
// Test SignSignature() (and therefore the version of Solver() that signs transactions)
CBasicKeyStore keystore;
CKey key[4];
for (int i = 0; i < 4; i++)
{
key[i].MakeNewKey();
keystore.AddKey(key[i]);
}
// 8 Scripts: checking all combinations of
// different keys, straight/EVAL, pubkey/pubkeyhash
CScript standardScripts[4];
standardScripts[0] << key[0].GetPubKey() << OP_CHECKSIG;
standardScripts[1].SetBitcoinAddress(key[1].GetPubKey());
standardScripts[2] << key[1].GetPubKey() << OP_CHECKSIG;
standardScripts[3].SetBitcoinAddress(key[2].GetPubKey());
CScript evalScripts[4];
uint160 sigScriptHashes[4];
for (int i = 0; i < 4; i++)
{
sigScriptHashes[i] = Hash160(standardScripts[i]);
keystore.AddCScript(sigScriptHashes[i], standardScripts[i]);
evalScripts[i] << OP_DUP << OP_HASH160 << sigScriptHashes[i] << OP_EQUALVERIFY << OP_EVAL;
}
CTransaction txFrom; // Funding transaction:
txFrom.vout.resize(8);
for (int i = 0; i < 4; i++)
{
txFrom.vout[i].scriptPubKey = evalScripts[i];
txFrom.vout[i+4].scriptPubKey = standardScripts[i];
}
BOOST_CHECK(txFrom.IsStandard());
CTransaction txTo[8]; // Spending transactions
for (int i = 0; i < 8; i++)
{
txTo[i].vin.resize(1);
txTo[i].vout.resize(1);
txTo[i].vin[0].prevout.n = i;
txTo[i].vin[0].prevout.hash = txFrom.GetHash();
txTo[i].vout[0].nValue = 1;
BOOST_CHECK_MESSAGE(IsMine(keystore, txFrom.vout[i].scriptPubKey), strprintf("IsMine %d", i));
}
for (int i = 0; i < 8; i++)
{
BOOST_CHECK_MESSAGE(SignSignature(keystore, txFrom, txTo[i], 0), strprintf("SignSignature %d", i));
}
// All of the above should be OK, and the txTos have valid signatures
// Check to make sure signature verification fails if we use the wrong ScriptSig:
for (int i = 0; i < 8; i++)
for (int j = 0; j < 8; j++)
{
CScript sigSave = txTo[i].vin[0].scriptSig;
txTo[i].vin[0].scriptSig = txTo[j].vin[0].scriptSig;
int nUnused = 0;
bool sigOK = VerifySignature(txFrom, txTo[i], 0, nUnused);
if (i == j)
BOOST_CHECK_MESSAGE(sigOK, strprintf("VerifySignature %d %d", i, j));
else
BOOST_CHECK_MESSAGE(!sigOK, strprintf("VerifySignature %d %d", i, j));
txTo[i].vin[0].scriptSig = sigSave;
}
}
BOOST_AUTO_TEST_CASE(script_op_eval2)
{
// Test OP_EVAL edge cases
CScript recurse;
recurse << OP_DUP << OP_EVAL;
uint160 recurseHash = Hash160(recurse);
CScript fund;
fund << OP_DUP << OP_HASH160 << recurseHash << OP_EQUALVERIFY << OP_EVAL;
CTransaction txFrom; // Funding transaction:
txFrom.vout.resize(1);
txFrom.vout[0].scriptPubKey = fund;
BOOST_CHECK(txFrom.IsStandard()); // Looks like a standard transaction until you try to spend it
CTransaction txTo;
txTo.vin.resize(1);
txTo.vout.resize(1);
txTo.vin[0].prevout.n = 0;
txTo.vin[0].prevout.hash = txFrom.GetHash();
txTo.vin[0].scriptSig = CScript() << static_cast<std::vector<unsigned char> >(recurse);
txTo.vout[0].nValue = 1;
int nUnused = 0;
BOOST_CHECK(!VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0, true));
BOOST_CHECK(!VerifySignature(txFrom, txTo, 0, nUnused, true));
}
BOOST_AUTO_TEST_CASE(script_op_eval3)
{
// Test the CScript::Set* methods
CBasicKeyStore keystore;
CKey key[4];
std::vector<CKey> keys;
for (int i = 0; i < 4; i++)
{
key[i].MakeNewKey();
keystore.AddKey(key[i]);
keys.push_back(key[i]);
}
CScript inner[4];
inner[0].SetBitcoinAddress(key[0].GetPubKey());
inner[1].SetMultisig(2, std::vector<CKey>(keys.begin(), keys.begin()+2));
inner[2].SetMultisig(1, std::vector<CKey>(keys.begin(), keys.begin()+2));
inner[3].SetMultisig(2, std::vector<CKey>(keys.begin(), keys.begin()+3));
CScript outer[4];
for (int i = 0; i < 4; i++)
{
outer[i].SetEval(inner[i]);
keystore.AddCScript(Hash160(inner[i]), inner[i]);
}
CTransaction txFrom; // Funding transaction:
txFrom.vout.resize(4);
for (int i = 0; i < 4; i++)
{
txFrom.vout[i].scriptPubKey = outer[i];
}
BOOST_CHECK(txFrom.IsStandard());
CTransaction txTo[4]; // Spending transactions
for (int i = 0; i < 4; i++)
{
txTo[i].vin.resize(1);
txTo[i].vout.resize(1);
txTo[i].vin[0].prevout.n = i;
txTo[i].vin[0].prevout.hash = txFrom.GetHash();
txTo[i].vout[0].nValue = 1;
txTo[i].vout[0].scriptPubKey = inner[i];
BOOST_CHECK_MESSAGE(IsMine(keystore, txFrom.vout[i].scriptPubKey), strprintf("IsMine %d", i));
}
for (int i = 0; i < 4; i++)
{
BOOST_CHECK_MESSAGE(SignSignature(keystore, txFrom, txTo[i], 0), strprintf("SignSignature %d", i));
BOOST_CHECK_MESSAGE(txTo[i].IsStandard(), strprintf("txTo[%d].IsStandard", i));
}
}
BOOST_AUTO_TEST_CASE(script_op_eval_backcompat1)
{
// Check backwards-incompatibility-testing code
CScript returnsEleven;
returnsEleven << OP_11;
// This should validate on new clients, but will
// be invalid on old clients (that interpret OP_EVAL as a no-op)
// ... except there's a special rule that makes new clients reject
// it.
CScript fund;
fund << OP_EVAL << OP_11 << OP_EQUAL;
CTransaction txFrom; // Funding transaction:
txFrom.vout.resize(1);
txFrom.vout[0].scriptPubKey = fund;
CTransaction txTo;
txTo.vin.resize(1);
txTo.vout.resize(1);
txTo.vin[0].prevout.n = 0;
txTo.vin[0].prevout.hash = txFrom.GetHash();
txTo.vin[0].scriptSig = CScript() << static_cast<std::vector<unsigned char> >(returnsEleven);
txTo.vout[0].nValue = 1;
int nUnused = 0;
BOOST_CHECK(!VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0, true));
BOOST_CHECK(!VerifySignature(txFrom, txTo, 0, nUnused, true));
}
BOOST_AUTO_TEST_CASE(script_op_eval_switchover)
{
// Test OP_EVAL switchover code
CScript notValid;
notValid << OP_11 << OP_12 << OP_EQUALVERIFY;
// This will be valid under old rules, invalid under new:
CScript fund;
fund << OP_EVAL;
CTransaction txFrom; // Funding transaction:
txFrom.vout.resize(1);
txFrom.vout[0].scriptPubKey = fund;
CTransaction txTo;
txTo.vin.resize(1);
txTo.vout.resize(1);
txTo.vin[0].prevout.n = 0;
txTo.vin[0].prevout.hash = txFrom.GetHash();
txTo.vin[0].scriptSig = CScript() << static_cast<std::vector<unsigned char> >(notValid);
txTo.vout[0].nValue = 1;
int nUnused = 0;
BOOST_CHECK(VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0, false));
// Under strict op_eval switchover, it should be considered invalid:
BOOST_CHECK(!VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0, true));
}
BOOST_AUTO_TEST_SUITE_END()
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