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Add automatic script test generation, and actual checksig tests

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This commit is contained in:
Pieter Wuille
2014-09-20 03:13:04 +02:00
parent 64cfaf891f
commit 8138cbea3c
8 changed files with 413 additions and 49 deletions
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325
src/test/script_tests.cpp
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@@ -5,12 +5,13 @@
#include "data/script_invalid.json.h"
#include "data/script_valid.json.h"
#include "core_io.h"
#include "key.h"
#include "keystore.h"
#include "main.h"
#include "script/script.h"
#include "script/sign.h"
#include "core_io.h"
#include "util.h"
#include <fstream>
#include <stdint.h>
@@ -36,6 +37,7 @@ using namespace boost::algorithm;
static const unsigned int flags = SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_STRICTENC;
unsigned int ParseScriptFlags(string strFlags);
string FormatScriptFlags(unsigned int flags);
Array
read_json(const std::string& jsondata)
@@ -68,10 +70,8 @@ CMutableTransaction BuildCreditingTransaction(const CScript& scriptPubKey)
return txCredit;
}
CMutableTransaction BuildSpendingTransaction(const CScript& scriptSig, const CScript& scriptPubKey)
CMutableTransaction BuildSpendingTransaction(const CScript& scriptSig, const CTransaction& txCredit)
{
CMutableTransaction txCredit = BuildCreditingTransaction(scriptPubKey);
CMutableTransaction txSpend;
txSpend.nVersion = 1;
txSpend.nLockTime = 0;
@@ -87,6 +87,317 @@ CMutableTransaction BuildSpendingTransaction(const CScript& scriptSig, const CSc
return txSpend;
}
void DoTest(const CScript& scriptPubKey, const CScript& scriptSig, int flags, bool expect, const std::string& message)
{
BOOST_CHECK_MESSAGE(VerifyScript(scriptSig, scriptPubKey, BuildSpendingTransaction(scriptSig, BuildCreditingTransaction(scriptPubKey)), 0, flags) == expect, message);
}
namespace
{
const unsigned char vchKey0[32] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
const unsigned char vchKey1[32] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0};
const unsigned char vchKey2[32] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0};
struct KeyData
{
CKey key0, key0C, key1, key1C, key2, key2C;
CPubKey pubkey0, pubkey0C, pubkey0H;
CPubKey pubkey1, pubkey1C;
CPubKey pubkey2, pubkey2C;
KeyData()
{
key0.Set(&vchKey0[0], &vchKey0[32], false);
key0C.Set(&vchKey0[0], &vchKey0[32], true);
pubkey0 = key0.GetPubKey();
pubkey0H = key0.GetPubKey();
pubkey0C = key0C.GetPubKey();
*const_cast<unsigned char*>(&pubkey0H[0]) = 0x06 | (pubkey0H[64] & 1);
key1.Set(&vchKey1[0], &vchKey1[32], false);
key1C.Set(&vchKey1[0], &vchKey1[32], true);
pubkey1 = key1.GetPubKey();
pubkey1C = key1C.GetPubKey();
key2.Set(&vchKey2[0], &vchKey2[32], false);
key2C.Set(&vchKey2[0], &vchKey2[32], true);
pubkey2 = key2.GetPubKey();
pubkey2C = key2C.GetPubKey();
}
};
const KeyData keys;
class TestBuilder
{
private:
CScript scriptPubKey;
CTransaction creditTx;
CMutableTransaction spendTx;
bool havePush;
std::vector<unsigned char> push;
std::string comment;
int flags;
void DoPush()
{
if (havePush) {
spendTx.vin[0].scriptSig << push;
havePush = false;
}
}
void DoPush(const std::vector<unsigned char>& data)
{
DoPush();
push = data;
havePush = true;
}
public:
TestBuilder(const CScript& redeemScript, const std::string& comment_, int flags_, bool P2SH = false) : scriptPubKey(redeemScript), havePush(false), comment(comment_), flags(flags_)
{
if (P2SH) {
creditTx = BuildCreditingTransaction(CScript() << OP_HASH160 << redeemScript.GetID() << OP_EQUAL);
} else {
creditTx = BuildCreditingTransaction(redeemScript);
}
spendTx = BuildSpendingTransaction(CScript(), creditTx);
}
TestBuilder& Add(const CScript& script)
{
spendTx.vin[0].scriptSig += script;
return *this;
}
TestBuilder& Num(int num)
{
spendTx.vin[0].scriptSig << CScriptNum(num);
return *this;
}
TestBuilder& Push(const std::string& hex)
{
DoPush(ParseHex(hex));
return *this;
}
TestBuilder& PushSig(const CKey& key, int nHashType = SIGHASH_ALL, unsigned int lenR = 32, unsigned int lenS = 32)
{
uint256 hash = SignatureHash(scriptPubKey, spendTx, 0, nHashType);
std::vector<unsigned char> vchSig, r, s;
do {
key.Sign(hash, vchSig, lenS <= 32);
r = std::vector<unsigned char>(&vchSig[4], &vchSig[4 + vchSig[3]]);
s = std::vector<unsigned char>(&vchSig[6 + vchSig[3]], &vchSig[6 + vchSig[3] + vchSig[5 + vchSig[3]]]);
} while (lenR != r.size() || lenS != s.size());
vchSig.push_back(static_cast<unsigned char>(nHashType));
DoPush(vchSig);
return *this;
}
TestBuilder& Push(const CPubKey& pubkey)
{
DoPush(std::vector<unsigned char>(pubkey.begin(), pubkey.end()));
return *this;
}
TestBuilder& PushRedeem()
{
DoPush(static_cast<std::vector<unsigned char> >(scriptPubKey));
return *this;
}
TestBuilder& EditPush(unsigned int pos, const std::string& hexin, const std::string& hexout)
{
assert(havePush);
std::vector<unsigned char> datain = ParseHex(hexin);
std::vector<unsigned char> dataout = ParseHex(hexout);
assert(pos + datain.size() <= push.size());
BOOST_CHECK_MESSAGE(std::vector<unsigned char>(push.begin() + pos, push.begin() + pos + datain.size()) == datain, comment);
push.erase(push.begin() + pos, push.begin() + pos + datain.size());
push.insert(push.begin() + pos, dataout.begin(), dataout.end());
return *this;
}
TestBuilder& DamagePush(unsigned int pos)
{
assert(havePush);
assert(pos < push.size());
push[pos] ^= 1;
return *this;
}
TestBuilder& Test(bool expect)
{
TestBuilder copy = *this; // Make a copy so we can rollback the push.
DoPush();
DoTest(creditTx.vout[0].scriptPubKey, spendTx.vin[0].scriptSig, flags, expect, comment);
*this = copy;
return *this;
}
operator std::string()
{
DoPush();
return "[\"" +
FormatScript(spendTx.vin[0].scriptSig) + "\", \"" +
FormatScript(creditTx.vout[0].scriptPubKey) + "\", \"" +
FormatScriptFlags(flags) + "\", \"" +
comment + "\"],\n";
}
std::string GetComment()
{
return comment;
}
const CScript& GetScriptPubKey()
{
return creditTx.vout[0].scriptPubKey;
}
};
}
BOOST_AUTO_TEST_CASE(script_build)
{
std::vector<TestBuilder> good;
std::vector<TestBuilder> bad;
good.push_back(TestBuilder(CScript() << keys.pubkey0 << OP_CHECKSIG,
"P2PK", 0
).PushSig(keys.key0));
bad.push_back(TestBuilder(CScript() << keys.pubkey0 << OP_CHECKSIG,
"P2PK, bad sig", 0
).PushSig(keys.key0).DamagePush(10));
good.push_back(TestBuilder(CScript() << OP_DUP << OP_HASH160 << keys.pubkey1C.GetID() << OP_EQUALVERIFY << OP_CHECKSIG,
"P2PKH", 0
).PushSig(keys.key1).Push(keys.pubkey1C));
bad.push_back(TestBuilder(CScript() << OP_DUP << OP_HASH160 << keys.pubkey2C.GetID() << OP_EQUALVERIFY << OP_CHECKSIG,
"P2PKH, bad pubkey", 0
).PushSig(keys.key2).Push(keys.pubkey2C).DamagePush(5));
good.push_back(TestBuilder(CScript() << keys.pubkey1 << OP_CHECKSIG,
"P2PK anyonecanpay", 0
).PushSig(keys.key1, SIGHASH_ALL | SIGHASH_ANYONECANPAY));
bad.push_back(TestBuilder(CScript() << keys.pubkey1 << OP_CHECKSIG,
"P2PK anyonecanpay marked with normal hashtype", 0
).PushSig(keys.key1, SIGHASH_ALL | SIGHASH_ANYONECANPAY).EditPush(70, "81", "01"));
good.push_back(TestBuilder(CScript() << keys.pubkey0C << OP_CHECKSIG,
"P2SH(P2PK)", SCRIPT_VERIFY_P2SH, true
).PushSig(keys.key0).PushRedeem());
bad.push_back(TestBuilder(CScript() << keys.pubkey0C << OP_CHECKSIG,
"P2SH(P2PK), bad redeemscript", SCRIPT_VERIFY_P2SH, true
).PushSig(keys.key0).PushRedeem().DamagePush(10));
good.push_back(TestBuilder(CScript() << OP_DUP << OP_HASH160 << keys.pubkey1.GetID() << OP_EQUALVERIFY << OP_CHECKSIG,
"P2SH(P2PKH), bad sig but no VERIFY_P2SH", 0, true
).PushSig(keys.key0).DamagePush(10).PushRedeem());
bad.push_back(TestBuilder(CScript() << OP_DUP << OP_HASH160 << keys.pubkey1.GetID() << OP_EQUALVERIFY << OP_CHECKSIG,
"P2SH(P2PKH), bad sig", SCRIPT_VERIFY_P2SH, true
).PushSig(keys.key0).DamagePush(10).PushRedeem());
good.push_back(TestBuilder(CScript() << OP_3 << keys.pubkey0C << keys.pubkey1C << keys.pubkey2C << OP_3 << OP_CHECKMULTISIG,
"3-of-3", 0
).Num(0).PushSig(keys.key0).PushSig(keys.key1).PushSig(keys.key2));
bad.push_back(TestBuilder(CScript() << OP_3 << keys.pubkey0C << keys.pubkey1C << keys.pubkey2C << OP_3 << OP_CHECKMULTISIG,
"3-of-3, 2 sigs", 0
).Num(0).PushSig(keys.key0).PushSig(keys.key1).Num(0));
good.push_back(TestBuilder(CScript() << OP_2 << keys.pubkey0C << keys.pubkey1C << keys.pubkey2C << OP_3 << OP_CHECKMULTISIG,
"P2SH(2-of-3)", SCRIPT_VERIFY_P2SH, true
).Num(0).PushSig(keys.key1).PushSig(keys.key2).PushRedeem());
bad.push_back(TestBuilder(CScript() << OP_2 << keys.pubkey0C << keys.pubkey1C << keys.pubkey2C << OP_3 << OP_CHECKMULTISIG,
"P2SH(2-of-3), 1 sig", SCRIPT_VERIFY_P2SH, true
).Num(0).PushSig(keys.key1).Num(0).PushRedeem());
good.push_back(TestBuilder(CScript() << keys.pubkey1C << OP_CHECKSIG,
"P2PK with too much R padding but no STRICTENC", 0
).PushSig(keys.key1, SIGHASH_ALL, 31, 32).EditPush(1, "43021F", "44022000"));
bad.push_back(TestBuilder(CScript() << keys.pubkey1C << OP_CHECKSIG,
"P2PK with too much R padding", SCRIPT_VERIFY_STRICTENC
).PushSig(keys.key1, SIGHASH_ALL, 31, 32).EditPush(1, "43021F", "44022000"));
good.push_back(TestBuilder(CScript() << keys.pubkey1C << OP_CHECKSIG,
"P2PK with too much S padding but no STRICTENC", 0
).PushSig(keys.key1, SIGHASH_ALL).EditPush(1, "44", "45").EditPush(37, "20", "2100"));
bad.push_back(TestBuilder(CScript() << keys.pubkey1C << OP_CHECKSIG,
"P2PK with too much S padding", SCRIPT_VERIFY_STRICTENC
).PushSig(keys.key1, SIGHASH_ALL).EditPush(1, "44", "45").EditPush(37, "20", "2100"));
good.push_back(TestBuilder(CScript() << keys.pubkey1C << OP_CHECKSIG,
"P2PK with too little R padding but no STRICTENC", 0
).PushSig(keys.key1, SIGHASH_ALL, 33, 32).EditPush(1, "45022100", "440220"));
bad.push_back(TestBuilder(CScript() << keys.pubkey1C << OP_CHECKSIG,
"P2PK with too little R padding", SCRIPT_VERIFY_STRICTENC
).PushSig(keys.key1, SIGHASH_ALL, 33, 32).EditPush(1, "45022100", "440220"));
good.push_back(TestBuilder(CScript() << keys.pubkey2C << OP_CHECKSIG,
"P2PK with high S but no LOW_S", SCRIPT_VERIFY_STRICTENC
).PushSig(keys.key2, SIGHASH_ALL, 32, 33));
good.push_back(TestBuilder(CScript() << keys.pubkey2C << OP_CHECKSIG,
"P2PK with high S but no STRICTENC", SCRIPT_VERIFY_LOW_S
).PushSig(keys.key2, SIGHASH_ALL, 32, 33));
bad.push_back(TestBuilder(CScript() << keys.pubkey2C << OP_CHECKSIG,
"P2PK with high S", SCRIPT_VERIFY_LOW_S | SCRIPT_VERIFY_STRICTENC
).PushSig(keys.key2, SIGHASH_ALL, 32, 33));
good.push_back(TestBuilder(CScript() << OP_3 << keys.pubkey0C << keys.pubkey1C << keys.pubkey2C << OP_3 << OP_CHECKMULTISIG,
"3-of-3 with nonzero dummy but no NULLDUMMY", 0
).Num(1).PushSig(keys.key0).PushSig(keys.key1).PushSig(keys.key2));
bad.push_back(TestBuilder(CScript() << OP_3 << keys.pubkey0C << keys.pubkey1C << keys.pubkey2C << OP_3 << OP_CHECKMULTISIG,
"3-of-3 with nonzero dummy", SCRIPT_VERIFY_NULLDUMMY
).Num(1).PushSig(keys.key0).PushSig(keys.key1).PushSig(keys.key2));
std::map<std::string, Array> tests_good;
std::map<std::string, Array> tests_bad;
{
Array json_good = read_json(std::string(json_tests::script_valid, json_tests::script_valid + sizeof(json_tests::script_valid)));
Array json_bad = read_json(std::string(json_tests::script_invalid, json_tests::script_invalid + sizeof(json_tests::script_invalid)));
BOOST_FOREACH(Value& tv, json_good) {
Array test = tv.get_array();
if (test.size() >= 4) {
tests_good[test[3].get_str()] = test;
}
}
BOOST_FOREACH(Value& tv, json_bad) {
Array test = tv.get_array();
if (test.size() >= 4) {
tests_bad[test[3].get_str()] = test;
}
}
}
std::string strGood;
std::string strBad;
BOOST_FOREACH(TestBuilder& test, good) {
test.Test(true);
BOOST_CHECK_MESSAGE(tests_good.count(test.GetComment()) > 0, "Missing auto script_valid test: " + test.GetComment());
BOOST_CHECK_MESSAGE(ParseScript(tests_good[test.GetComment()][1].get_str()) == test.GetScriptPubKey(), "ScriptPubKey mismatch in auto script_valid test: " + test.GetComment());
strGood += test;
}
BOOST_FOREACH(TestBuilder& test, bad) {
test.Test(false);
BOOST_CHECK_MESSAGE(tests_bad.count(test.GetComment()) > 0, "Missing auto script_invalid test: " + test.GetComment());
BOOST_CHECK_MESSAGE(ParseScript(tests_bad[test.GetComment()][1].get_str()) == test.GetScriptPubKey(), "ScriptPubKey mismatch in auto script_invalid test: " + test.GetComment());
strBad += test;
}
#if 0
FILE* valid = fopen("script_valid.json.gen", "w");
fputs(strGood.c_str(), valid);
fclose(valid);
FILE* invalid = fopen("script_invalid.json.gen", "w");
fputs(strBad.c_str(), invalid);
fclose(invalid);
#endif
}
BOOST_AUTO_TEST_CASE(script_valid)
{
// Read tests from test/data/script_valid.json
@@ -113,8 +424,7 @@ BOOST_AUTO_TEST_CASE(script_valid)
CScript scriptPubKey = ParseScript(scriptPubKeyString);
unsigned int scriptflags = ParseScriptFlags(test[2].get_str());
CTransaction tx;
BOOST_CHECK_MESSAGE(VerifyScript(scriptSig, scriptPubKey, BuildSpendingTransaction(scriptSig, scriptPubKey), 0, scriptflags), strTest);
DoTest(scriptPubKey, scriptSig, scriptflags, true, strTest);
}
}
@@ -140,8 +450,7 @@ BOOST_AUTO_TEST_CASE(script_invalid)
CScript scriptPubKey = ParseScript(scriptPubKeyString);
unsigned int scriptflags = ParseScriptFlags(test[2].get_str());
CTransaction tx;
BOOST_CHECK_MESSAGE(!VerifyScript(scriptSig, scriptPubKey, BuildSpendingTransaction(scriptSig, scriptPubKey), 0, scriptflags), strTest);
DoTest(scriptPubKey, scriptSig, scriptflags, false, strTest);
}
}