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349 lines
12 KiB
C++
349 lines
12 KiB
C++
// Copyright (c) 2012-2013 The Bitcoin Core developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "script.h"
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#include "key.h"
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#include "keystore.h"
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#include "main.h"
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#include "script.h"
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#include <vector>
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#include <boost/test/unit_test.hpp>
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using namespace std;
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// Test routines internal to script.cpp:
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extern uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType);
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// Helpers:
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static std::vector<unsigned char>
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Serialize(const CScript& s)
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{
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std::vector<unsigned char> sSerialized(s);
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return sSerialized;
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}
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static bool
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Verify(const CScript& scriptSig, const CScript& scriptPubKey, bool fStrict)
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{
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// Create dummy to/from transactions:
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CTransaction txFrom;
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txFrom.vout.resize(1);
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txFrom.vout[0].scriptPubKey = scriptPubKey;
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CTransaction txTo;
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txTo.vin.resize(1);
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txTo.vout.resize(1);
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txTo.vin[0].prevout.n = 0;
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txTo.vin[0].prevout.hash = txFrom.GetHash();
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txTo.vin[0].scriptSig = scriptSig;
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txTo.vout[0].nValue = 1;
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return VerifyScript(scriptSig, scriptPubKey, txTo, 0, fStrict ? SCRIPT_VERIFY_P2SH : SCRIPT_VERIFY_NONE, 0);
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}
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BOOST_AUTO_TEST_SUITE(script_P2SH_tests)
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BOOST_AUTO_TEST_CASE(sign)
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{
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LOCK(cs_main);
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// Pay-to-script-hash looks like this:
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// scriptSig: <sig> <sig...> <serialized_script>
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// scriptPubKey: HASH160 <hash> EQUAL
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// Test SignSignature() (and therefore the version of Solver() that signs transactions)
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CBasicKeyStore keystore;
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CKey key[4];
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for (int i = 0; i < 4; i++)
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{
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key[i].MakeNewKey(true);
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keystore.AddKey(key[i]);
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}
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// 8 Scripts: checking all combinations of
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// different keys, straight/P2SH, pubkey/pubkeyhash
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CScript standardScripts[4];
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standardScripts[0] << key[0].GetPubKey() << OP_CHECKSIG;
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standardScripts[1].SetDestination(key[1].GetPubKey().GetID());
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standardScripts[2] << key[1].GetPubKey() << OP_CHECKSIG;
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standardScripts[3].SetDestination(key[2].GetPubKey().GetID());
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CScript evalScripts[4];
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for (int i = 0; i < 4; i++)
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{
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keystore.AddCScript(standardScripts[i]);
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evalScripts[i].SetDestination(standardScripts[i].GetID());
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}
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CTransaction txFrom; // Funding transaction:
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string reason;
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txFrom.vout.resize(8);
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for (int i = 0; i < 4; i++)
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{
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txFrom.vout[i].scriptPubKey = evalScripts[i];
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txFrom.vout[i].nValue = COIN;
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txFrom.vout[i+4].scriptPubKey = standardScripts[i];
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txFrom.vout[i+4].nValue = COIN;
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}
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BOOST_CHECK(IsStandardTx(txFrom, reason));
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CTransaction txTo[8]; // Spending transactions
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for (int i = 0; i < 8; i++)
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{
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txTo[i].vin.resize(1);
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txTo[i].vout.resize(1);
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txTo[i].vin[0].prevout.n = i;
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txTo[i].vin[0].prevout.hash = txFrom.GetHash();
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txTo[i].vout[0].nValue = 1;
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BOOST_CHECK_MESSAGE(IsMine(keystore, txFrom.vout[i].scriptPubKey), strprintf("IsMine %d", i));
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}
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for (int i = 0; i < 8; i++)
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{
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BOOST_CHECK_MESSAGE(SignSignature(keystore, txFrom, txTo[i], 0), strprintf("SignSignature %d", i));
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}
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// All of the above should be OK, and the txTos have valid signatures
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// Check to make sure signature verification fails if we use the wrong ScriptSig:
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for (int i = 0; i < 8; i++)
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for (int j = 0; j < 8; j++)
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{
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CScript sigSave = txTo[i].vin[0].scriptSig;
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txTo[i].vin[0].scriptSig = txTo[j].vin[0].scriptSig;
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bool sigOK = VerifySignature(CCoins(txFrom, 0), txTo[i], 0, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_STRICTENC, 0);
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if (i == j)
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BOOST_CHECK_MESSAGE(sigOK, strprintf("VerifySignature %d %d", i, j));
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else
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BOOST_CHECK_MESSAGE(!sigOK, strprintf("VerifySignature %d %d", i, j));
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txTo[i].vin[0].scriptSig = sigSave;
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}
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}
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BOOST_AUTO_TEST_CASE(norecurse)
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{
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// Make sure only the outer pay-to-script-hash does the
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// extra-validation thing:
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CScript invalidAsScript;
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invalidAsScript << OP_INVALIDOPCODE << OP_INVALIDOPCODE;
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CScript p2sh;
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p2sh.SetDestination(invalidAsScript.GetID());
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CScript scriptSig;
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scriptSig << Serialize(invalidAsScript);
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// Should not verify, because it will try to execute OP_INVALIDOPCODE
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BOOST_CHECK(!Verify(scriptSig, p2sh, true));
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// Try to recur, and verification should succeed because
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// the inner HASH160 <> EQUAL should only check the hash:
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CScript p2sh2;
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p2sh2.SetDestination(p2sh.GetID());
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CScript scriptSig2;
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scriptSig2 << Serialize(invalidAsScript) << Serialize(p2sh);
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BOOST_CHECK(Verify(scriptSig2, p2sh2, true));
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}
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BOOST_AUTO_TEST_CASE(set)
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{
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LOCK(cs_main);
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// Test the CScript::Set* methods
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CBasicKeyStore keystore;
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CKey key[4];
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std::vector<CPubKey> keys;
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for (int i = 0; i < 4; i++)
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{
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key[i].MakeNewKey(true);
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keystore.AddKey(key[i]);
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keys.push_back(key[i].GetPubKey());
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}
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CScript inner[4];
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inner[0].SetDestination(key[0].GetPubKey().GetID());
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inner[1].SetMultisig(2, std::vector<CPubKey>(keys.begin(), keys.begin()+2));
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inner[2].SetMultisig(1, std::vector<CPubKey>(keys.begin(), keys.begin()+2));
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inner[3].SetMultisig(2, std::vector<CPubKey>(keys.begin(), keys.begin()+3));
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CScript outer[4];
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for (int i = 0; i < 4; i++)
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{
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outer[i].SetDestination(inner[i].GetID());
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keystore.AddCScript(inner[i]);
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}
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CTransaction txFrom; // Funding transaction:
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string reason;
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txFrom.vout.resize(4);
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for (int i = 0; i < 4; i++)
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{
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txFrom.vout[i].scriptPubKey = outer[i];
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txFrom.vout[i].nValue = CENT;
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}
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BOOST_CHECK(IsStandardTx(txFrom, reason));
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CTransaction txTo[4]; // Spending transactions
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for (int i = 0; i < 4; i++)
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{
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txTo[i].vin.resize(1);
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txTo[i].vout.resize(1);
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txTo[i].vin[0].prevout.n = i;
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txTo[i].vin[0].prevout.hash = txFrom.GetHash();
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txTo[i].vout[0].nValue = 1*CENT;
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txTo[i].vout[0].scriptPubKey = inner[i];
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BOOST_CHECK_MESSAGE(IsMine(keystore, txFrom.vout[i].scriptPubKey), strprintf("IsMine %d", i));
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}
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for (int i = 0; i < 4; i++)
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{
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BOOST_CHECK_MESSAGE(SignSignature(keystore, txFrom, txTo[i], 0), strprintf("SignSignature %d", i));
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BOOST_CHECK_MESSAGE(IsStandardTx(txTo[i], reason), strprintf("txTo[%d].IsStandard", i));
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}
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}
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BOOST_AUTO_TEST_CASE(is)
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{
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// Test CScript::IsPayToScriptHash()
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uint160 dummy;
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CScript p2sh;
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p2sh << OP_HASH160 << dummy << OP_EQUAL;
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BOOST_CHECK(p2sh.IsPayToScriptHash());
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// Not considered pay-to-script-hash if using one of the OP_PUSHDATA opcodes:
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static const unsigned char direct[] = { OP_HASH160, 20, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, OP_EQUAL };
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BOOST_CHECK(CScript(direct, direct+sizeof(direct)).IsPayToScriptHash());
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static const unsigned char pushdata1[] = { OP_HASH160, OP_PUSHDATA1, 20, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, OP_EQUAL };
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BOOST_CHECK(!CScript(pushdata1, pushdata1+sizeof(pushdata1)).IsPayToScriptHash());
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static const unsigned char pushdata2[] = { OP_HASH160, OP_PUSHDATA2, 20,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, OP_EQUAL };
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BOOST_CHECK(!CScript(pushdata2, pushdata2+sizeof(pushdata2)).IsPayToScriptHash());
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static const unsigned char pushdata4[] = { OP_HASH160, OP_PUSHDATA4, 20,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, OP_EQUAL };
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BOOST_CHECK(!CScript(pushdata4, pushdata4+sizeof(pushdata4)).IsPayToScriptHash());
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CScript not_p2sh;
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BOOST_CHECK(!not_p2sh.IsPayToScriptHash());
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not_p2sh.clear(); not_p2sh << OP_HASH160 << dummy << dummy << OP_EQUAL;
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BOOST_CHECK(!not_p2sh.IsPayToScriptHash());
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not_p2sh.clear(); not_p2sh << OP_NOP << dummy << OP_EQUAL;
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BOOST_CHECK(!not_p2sh.IsPayToScriptHash());
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not_p2sh.clear(); not_p2sh << OP_HASH160 << dummy << OP_CHECKSIG;
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BOOST_CHECK(!not_p2sh.IsPayToScriptHash());
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}
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BOOST_AUTO_TEST_CASE(switchover)
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{
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// Test switch over code
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CScript notValid;
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notValid << OP_11 << OP_12 << OP_EQUALVERIFY;
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CScript scriptSig;
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scriptSig << Serialize(notValid);
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CScript fund;
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fund.SetDestination(notValid.GetID());
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// Validation should succeed under old rules (hash is correct):
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BOOST_CHECK(Verify(scriptSig, fund, false));
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// Fail under new:
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BOOST_CHECK(!Verify(scriptSig, fund, true));
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}
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BOOST_AUTO_TEST_CASE(AreInputsStandard)
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{
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LOCK(cs_main);
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CCoinsView coinsDummy;
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CCoinsViewCache coins(coinsDummy);
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CBasicKeyStore keystore;
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CKey key[3];
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vector<CPubKey> keys;
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for (int i = 0; i < 3; i++)
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{
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key[i].MakeNewKey(true);
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keystore.AddKey(key[i]);
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keys.push_back(key[i].GetPubKey());
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}
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CTransaction txFrom;
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txFrom.vout.resize(6);
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// First three are standard:
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CScript pay1; pay1.SetDestination(key[0].GetPubKey().GetID());
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keystore.AddCScript(pay1);
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CScript payScriptHash1; payScriptHash1.SetDestination(pay1.GetID());
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CScript pay1of3; pay1of3.SetMultisig(1, keys);
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txFrom.vout[0].scriptPubKey = payScriptHash1;
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txFrom.vout[0].nValue = 1000;
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txFrom.vout[1].scriptPubKey = pay1;
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txFrom.vout[1].nValue = 2000;
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txFrom.vout[2].scriptPubKey = pay1of3;
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txFrom.vout[2].nValue = 3000;
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// Last three non-standard:
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CScript empty;
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keystore.AddCScript(empty);
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txFrom.vout[3].scriptPubKey = empty;
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txFrom.vout[3].nValue = 4000;
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// Can't use SetPayToScriptHash, it checks for the empty Script. So:
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txFrom.vout[4].scriptPubKey << OP_HASH160 << Hash160(empty) << OP_EQUAL;
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txFrom.vout[4].nValue = 5000;
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CScript oneOfEleven;
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oneOfEleven << OP_1;
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for (int i = 0; i < 11; i++)
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oneOfEleven << key[0].GetPubKey();
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oneOfEleven << OP_11 << OP_CHECKMULTISIG;
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txFrom.vout[5].scriptPubKey.SetDestination(oneOfEleven.GetID());
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txFrom.vout[5].nValue = 6000;
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coins.SetCoins(txFrom.GetHash(), CCoins(txFrom, 0));
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CTransaction txTo;
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txTo.vout.resize(1);
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txTo.vout[0].scriptPubKey.SetDestination(key[1].GetPubKey().GetID());
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txTo.vin.resize(3);
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txTo.vin[0].prevout.n = 0;
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txTo.vin[0].prevout.hash = txFrom.GetHash();
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BOOST_CHECK(SignSignature(keystore, txFrom, txTo, 0));
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txTo.vin[1].prevout.n = 1;
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txTo.vin[1].prevout.hash = txFrom.GetHash();
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BOOST_CHECK(SignSignature(keystore, txFrom, txTo, 1));
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txTo.vin[2].prevout.n = 2;
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txTo.vin[2].prevout.hash = txFrom.GetHash();
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BOOST_CHECK(SignSignature(keystore, txFrom, txTo, 2));
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BOOST_CHECK(::AreInputsStandard(txTo, coins));
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BOOST_CHECK_EQUAL(GetP2SHSigOpCount(txTo, coins), 1U);
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// Make sure adding crap to the scriptSigs makes them non-standard:
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for (int i = 0; i < 3; i++)
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{
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CScript t = txTo.vin[i].scriptSig;
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txTo.vin[i].scriptSig = (CScript() << 11) + t;
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BOOST_CHECK(!::AreInputsStandard(txTo, coins));
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txTo.vin[i].scriptSig = t;
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}
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CTransaction txToNonStd;
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txToNonStd.vout.resize(1);
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txToNonStd.vout[0].scriptPubKey.SetDestination(key[1].GetPubKey().GetID());
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txToNonStd.vout[0].nValue = 1000;
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txToNonStd.vin.resize(2);
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txToNonStd.vin[0].prevout.n = 4;
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txToNonStd.vin[0].prevout.hash = txFrom.GetHash();
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txToNonStd.vin[0].scriptSig << Serialize(empty);
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txToNonStd.vin[1].prevout.n = 5;
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txToNonStd.vin[1].prevout.hash = txFrom.GetHash();
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txToNonStd.vin[1].scriptSig << OP_0 << Serialize(oneOfEleven);
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BOOST_CHECK(!::AreInputsStandard(txToNonStd, coins));
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BOOST_CHECK_EQUAL(GetP2SHSigOpCount(txToNonStd, coins), 11U);
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txToNonStd.vin[0].scriptSig.clear();
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BOOST_CHECK(!::AreInputsStandard(txToNonStd, coins));
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}
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BOOST_AUTO_TEST_SUITE_END()
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