From d76412b068d95454732aa3def95decf35251759a Mon Sep 17 00:00:00 2001 From: Suhas Daftuar Date: Tue, 28 Apr 2015 12:41:54 -0400 Subject: [PATCH] Add script manipulation tools for use in mininode testing framework script.py is modified from the code in python-bitcoinlib, and provides tools for manipulating and creating CScript objects. bignum.py is a dependency for script.py script_test.py is an example test that uses the script tools for running a test that compares the behavior of two nodes, in a comptool- style test, for each of the test cases in the bitcoin unit test script files, script_valid.json and script_invalid.json. (This test is very slow to run, but is a proof of concept for how we can write tests to compare consensus-critical behavior between different versions of bitcoind.) bipdersig-p2p.py is another example test in the comptool framework, which tests deployment of BIP DERSIG for a single node. It uses the script.py tools for manipulating signatures to be non-DER compliant. --- qa/rpc-tests/bignum.py | 102 ++++ qa/rpc-tests/bipdersig-p2p.py | 183 +++++++ qa/rpc-tests/script.py | 896 ++++++++++++++++++++++++++++++++++ qa/rpc-tests/script_test.py | 253 ++++++++++ 4 files changed, 1434 insertions(+) create mode 100644 qa/rpc-tests/bignum.py create mode 100755 qa/rpc-tests/bipdersig-p2p.py create mode 100644 qa/rpc-tests/script.py create mode 100755 qa/rpc-tests/script_test.py diff --git a/qa/rpc-tests/bignum.py b/qa/rpc-tests/bignum.py new file mode 100644 index 000000000..b0c58ccd4 --- /dev/null +++ b/qa/rpc-tests/bignum.py @@ -0,0 +1,102 @@ +# +# +# bignum.py +# +# This file is copied from python-bitcoinlib. +# +# Distributed under the MIT/X11 software license, see the accompanying +# file COPYING or http://www.opensource.org/licenses/mit-license.php. +# + +"""Bignum routines""" + +from __future__ import absolute_import, division, print_function, unicode_literals + +import struct + + +# generic big endian MPI format + +def bn_bytes(v, have_ext=False): + ext = 0 + if have_ext: + ext = 1 + return ((v.bit_length()+7)//8) + ext + +def bn2bin(v): + s = bytearray() + i = bn_bytes(v) + while i > 0: + s.append((v >> ((i-1) * 8)) & 0xff) + i -= 1 + return s + +def bin2bn(s): + l = 0 + for ch in s: + l = (l << 8) | ch + return l + +def bn2mpi(v): + have_ext = False + if v.bit_length() > 0: + have_ext = (v.bit_length() & 0x07) == 0 + + neg = False + if v < 0: + neg = True + v = -v + + s = struct.pack(b">I", bn_bytes(v, have_ext)) + ext = bytearray() + if have_ext: + ext.append(0) + v_bin = bn2bin(v) + if neg: + if have_ext: + ext[0] |= 0x80 + else: + v_bin[0] |= 0x80 + return s + ext + v_bin + +def mpi2bn(s): + if len(s) < 4: + return None + s_size = bytes(s[:4]) + v_len = struct.unpack(b">I", s_size)[0] + if len(s) != (v_len + 4): + return None + if v_len == 0: + return 0 + + v_str = bytearray(s[4:]) + neg = False + i = v_str[0] + if i & 0x80: + neg = True + i &= ~0x80 + v_str[0] = i + + v = bin2bn(v_str) + + if neg: + return -v + return v + +# bitcoin-specific little endian format, with implicit size +def mpi2vch(s): + r = s[4:] # strip size + r = r[::-1] # reverse string, converting BE->LE + return r + +def bn2vch(v): + return bytes(mpi2vch(bn2mpi(v))) + +def vch2mpi(s): + r = struct.pack(b">I", len(s)) # size + r += s[::-1] # reverse string, converting LE->BE + return r + +def vch2bn(s): + return mpi2bn(vch2mpi(s)) + diff --git a/qa/rpc-tests/bipdersig-p2p.py b/qa/rpc-tests/bipdersig-p2p.py new file mode 100755 index 000000000..ff0c87889 --- /dev/null +++ b/qa/rpc-tests/bipdersig-p2p.py @@ -0,0 +1,183 @@ +#!/usr/bin/env python2 +# +# Distributed under the MIT/X11 software license, see the accompanying +# file COPYING or http://www.opensource.org/licenses/mit-license.php. +# + +from test_framework import ComparisonTestFramework +from util import * +from mininode import CTransaction, NetworkThread +from blocktools import create_coinbase, create_block +from binascii import hexlify, unhexlify +import cStringIO +from comptool import TestInstance, TestManager +from script import CScript +import time + +# A canonical signature consists of: +# <30> <02> <02> +def unDERify(tx): + ''' + Make the signature in vin 0 of a tx non-DER-compliant, + by adding padding after the S-value. + ''' + scriptSig = CScript(tx.vin[0].scriptSig) + newscript = [] + for i in scriptSig: + if (len(newscript) == 0): + newscript.append(i[0:-1] + '\0' + i[-1]) + else: + newscript.append(i) + tx.vin[0].scriptSig = CScript(newscript) + +''' +This test is meant to exercise BIP66 (DER SIG). +Connect to a single node. +Mine 2 (version 2) blocks (save the coinbases for later). +Generate 98 more version 2 blocks, verify the node accepts. +Mine 749 version 3 blocks, verify the node accepts. +Check that the new DERSIG rules are not enforced on the 750th version 3 block. +Check that the new DERSIG rules are enforced on the 751st version 3 block. +Mine 199 new version blocks. +Mine 1 old-version block. +Mine 1 new version block. +Mine 1 old version block, see that the node rejects. +''' + +class BIP66Test(ComparisonTestFramework): + + def __init__(self): + self.num_nodes = 1 + + def setup_network(self): + # Must set the blockversion for this test + self.nodes = start_nodes(1, self.options.tmpdir, + extra_args=[['-debug', '-whitelist=127.0.0.1', '-blockversion=2']], + binary=[self.options.testbinary]) + + def run_test(self): + test = TestManager(self, self.options.tmpdir) + test.add_all_connections(self.nodes) + NetworkThread().start() # Start up network handling in another thread + test.run() + + def create_transaction(self, node, coinbase, to_address, amount): + from_txid = node.getblock(coinbase)['tx'][0] + inputs = [{ "txid" : from_txid, "vout" : 0}] + outputs = { to_address : amount } + rawtx = node.createrawtransaction(inputs, outputs) + signresult = node.signrawtransaction(rawtx) + tx = CTransaction() + f = cStringIO.StringIO(unhexlify(signresult['hex'])) + tx.deserialize(f) + return tx + + def get_tests(self): + + self.coinbase_blocks = self.nodes[0].generate(2) + self.tip = int ("0x" + self.nodes[0].getbestblockhash() + "L", 0) + self.nodeaddress = self.nodes[0].getnewaddress() + self.last_block_time = time.time() + + ''' 98 more version 2 blocks ''' + test_blocks = [] + for i in xrange(98): + block = create_block(self.tip, create_coinbase(2), self.last_block_time + 1) + block.nVersion = 2 + block.rehash() + block.solve() + test_blocks.append([block, True]) + self.last_block_time += 1 + self.tip = block.sha256 + yield TestInstance(test_blocks, sync_every_block=False) + + ''' Mine 749 version 3 blocks ''' + test_blocks = [] + for i in xrange(749): + block = create_block(self.tip, create_coinbase(2), self.last_block_time + 1) + block.nVersion = 3 + block.rehash() + block.solve() + test_blocks.append([block, True]) + self.last_block_time += 1 + self.tip = block.sha256 + yield TestInstance(test_blocks, sync_every_block=False) + + ''' + Check that the new DERSIG rules are not enforced in the 750th + version 3 block. + ''' + spendtx = self.create_transaction(self.nodes[0], + self.coinbase_blocks[0], self.nodeaddress, 1.0) + unDERify(spendtx) + spendtx.rehash() + + block = create_block(self.tip, create_coinbase(2), self.last_block_time + 1) + block.nVersion = 3 + block.vtx.append(spendtx) + block.hashMerkleRoot = block.calc_merkle_root() + block.rehash() + block.solve() + + self.last_block_time += 1 + self.tip = block.sha256 + yield TestInstance([[block, True]]) + + ''' + Check that the new DERSIG rules are enforced in the 751st version 3 + block. + ''' + spendtx = self.create_transaction(self.nodes[0], + self.coinbase_blocks[1], self.nodeaddress, 1.0) + unDERify(spendtx) + spendtx.rehash() + + block = create_block(self.tip, create_coinbase(1), self.last_block_time + 1) + block.nVersion = 3 + block.vtx.append(spendtx) + block.hashMerkleRoot = block.calc_merkle_root() + block.rehash() + block.solve() + self.last_block_time += 1 + yield TestInstance([[block, False]]) + + ''' Mine 199 new version blocks on last valid tip ''' + test_blocks = [] + for i in xrange(199): + block = create_block(self.tip, create_coinbase(1), self.last_block_time + 1) + block.nVersion = 3 + block.rehash() + block.solve() + test_blocks.append([block, True]) + self.last_block_time += 1 + self.tip = block.sha256 + yield TestInstance(test_blocks, sync_every_block=False) + + ''' Mine 1 old version block ''' + block = create_block(self.tip, create_coinbase(1), self.last_block_time + 1) + block.nVersion = 2 + block.rehash() + block.solve() + self.last_block_time += 1 + self.tip = block.sha256 + yield TestInstance([[block, True]]) + + ''' Mine 1 new version block ''' + block = create_block(self.tip, create_coinbase(1), self.last_block_time + 1) + block.nVersion = 3 + block.rehash() + block.solve() + self.last_block_time += 1 + self.tip = block.sha256 + yield TestInstance([[block, True]]) + + ''' Mine 1 old version block, should be invalid ''' + block = create_block(self.tip, create_coinbase(1), self.last_block_time + 1) + block.nVersion = 2 + block.rehash() + block.solve() + self.last_block_time += 1 + yield TestInstance([[block, False]]) + +if __name__ == '__main__': + BIP66Test().main() diff --git a/qa/rpc-tests/script.py b/qa/rpc-tests/script.py new file mode 100644 index 000000000..03695b863 --- /dev/null +++ b/qa/rpc-tests/script.py @@ -0,0 +1,896 @@ +# +# script.py +# +# This file is modified from python-bitcoinlib. +# +# Distributed under the MIT/X11 software license, see the accompanying +# file COPYING or http://www.opensource.org/licenses/mit-license.php. +# + +"""Scripts + +Functionality to build scripts, as well as SignatureHash(). +""" + +from __future__ import absolute_import, division, print_function, unicode_literals + +from mininode import CTransaction, CTxOut, hash256 + +import sys +bchr = chr +bord = ord +if sys.version > '3': + long = int + bchr = lambda x: bytes([x]) + bord = lambda x: x + +import copy +import struct + +import bignum + +MAX_SCRIPT_SIZE = 10000 +MAX_SCRIPT_ELEMENT_SIZE = 520 +MAX_SCRIPT_OPCODES = 201 + +OPCODE_NAMES = {} + +_opcode_instances = [] +class CScriptOp(int): + """A single script opcode""" + __slots__ = [] + + @staticmethod + def encode_op_pushdata(d): + """Encode a PUSHDATA op, returning bytes""" + if len(d) < 0x4c: + return b'' + bchr(len(d)) + d # OP_PUSHDATA + elif len(d) <= 0xff: + return b'\x4c' + bchr(len(d)) + d # OP_PUSHDATA1 + elif len(d) <= 0xffff: + return b'\x4d' + struct.pack(b'>= 8 + if r[-1] & 0x80: + r.append(0x80 if neg else 0) + elif neg: + r[-1] |= 0x80 + return bytes(bchr(len(r)) + r) + + +class CScript(bytes): + """Serialized script + + A bytes subclass, so you can use this directly whenever bytes are accepted. + Note that this means that indexing does *not* work - you'll get an index by + byte rather than opcode. This format was chosen for efficiency so that the + general case would not require creating a lot of little CScriptOP objects. + + iter(script) however does iterate by opcode. + """ + @classmethod + def __coerce_instance(cls, other): + # Coerce other into bytes + if isinstance(other, CScriptOp): + other = bchr(other) + elif isinstance(other, CScriptNum): + if (other.value == 0): + other = bchr(CScriptOp(OP_0)) + else: + other = CScriptNum.encode(other) + elif isinstance(other, (int, long)): + if 0 <= other <= 16: + other = bytes(bchr(CScriptOp.encode_op_n(other))) + elif other == -1: + other = bytes(bchr(OP_1NEGATE)) + else: + other = CScriptOp.encode_op_pushdata(bignum.bn2vch(other)) + elif isinstance(other, (bytes, bytearray)): + other = CScriptOp.encode_op_pushdata(other) + return other + + def __add__(self, other): + # Do the coercion outside of the try block so that errors in it are + # noticed. + other = self.__coerce_instance(other) + + try: + # bytes.__add__ always returns bytes instances unfortunately + return CScript(super(CScript, self).__add__(other)) + except TypeError: + raise TypeError('Can not add a %r instance to a CScript' % other.__class__) + + def join(self, iterable): + # join makes no sense for a CScript() + raise NotImplementedError + + def __new__(cls, value=b''): + if isinstance(value, bytes) or isinstance(value, bytearray): + return super(CScript, cls).__new__(cls, value) + else: + def coerce_iterable(iterable): + for instance in iterable: + yield cls.__coerce_instance(instance) + # Annoyingly on both python2 and python3 bytes.join() always + # returns a bytes instance even when subclassed. + return super(CScript, cls).__new__(cls, b''.join(coerce_iterable(value))) + + def raw_iter(self): + """Raw iteration + + Yields tuples of (opcode, data, sop_idx) so that the different possible + PUSHDATA encodings can be accurately distinguished, as well as + determining the exact opcode byte indexes. (sop_idx) + """ + i = 0 + while i < len(self): + sop_idx = i + opcode = bord(self[i]) + i += 1 + + if opcode > OP_PUSHDATA4: + yield (opcode, None, sop_idx) + else: + datasize = None + pushdata_type = None + if opcode < OP_PUSHDATA1: + pushdata_type = 'PUSHDATA(%d)' % opcode + datasize = opcode + + elif opcode == OP_PUSHDATA1: + pushdata_type = 'PUSHDATA1' + if i >= len(self): + raise CScriptInvalidError('PUSHDATA1: missing data length') + datasize = bord(self[i]) + i += 1 + + elif opcode == OP_PUSHDATA2: + pushdata_type = 'PUSHDATA2' + if i + 1 >= len(self): + raise CScriptInvalidError('PUSHDATA2: missing data length') + datasize = bord(self[i]) + (bord(self[i+1]) << 8) + i += 2 + + elif opcode == OP_PUSHDATA4: + pushdata_type = 'PUSHDATA4' + if i + 3 >= len(self): + raise CScriptInvalidError('PUSHDATA4: missing data length') + datasize = bord(self[i]) + (bord(self[i+1]) << 8) + (bord(self[i+2]) << 16) + (bord(self[i+3]) << 24) + i += 4 + + else: + assert False # shouldn't happen + + + data = bytes(self[i:i+datasize]) + + # Check for truncation + if len(data) < datasize: + raise CScriptTruncatedPushDataError('%s: truncated data' % pushdata_type, data) + + i += datasize + + yield (opcode, data, sop_idx) + + def __iter__(self): + """'Cooked' iteration + + Returns either a CScriptOP instance, an integer, or bytes, as + appropriate. + + See raw_iter() if you need to distinguish the different possible + PUSHDATA encodings. + """ + for (opcode, data, sop_idx) in self.raw_iter(): + if data is not None: + yield data + else: + opcode = CScriptOp(opcode) + + if opcode.is_small_int(): + yield opcode.decode_op_n() + else: + yield CScriptOp(opcode) + + def __repr__(self): + # For Python3 compatibility add b before strings so testcases don't + # need to change + def _repr(o): + if isinstance(o, bytes): + return "x('%s')" % binascii.hexlify(o).decode('utf8') + else: + return repr(o) + + ops = [] + i = iter(self) + while True: + op = None + try: + op = _repr(next(i)) + except CScriptTruncatedPushDataError as err: + op = '%s...' % (_repr(err.data), err) + break + except CScriptInvalidError as err: + op = '' % err + break + except StopIteration: + break + finally: + if op is not None: + ops.append(op) + + return "CScript([%s])" % ', '.join(ops) + + def GetSigOpCount(self, fAccurate): + """Get the SigOp count. + + fAccurate - Accurately count CHECKMULTISIG, see BIP16 for details. + + Note that this is consensus-critical. + """ + n = 0 + lastOpcode = OP_INVALIDOPCODE + for (opcode, data, sop_idx) in self.raw_iter(): + if opcode in (OP_CHECKSIG, OP_CHECKSIGVERIFY): + n += 1 + elif opcode in (OP_CHECKMULTISIG, OP_CHECKMULTISIGVERIFY): + if fAccurate and (OP_1 <= lastOpcode <= OP_16): + n += opcode.decode_op_n() + else: + n += 20 + lastOpcode = opcode + return n + + +SIGHASH_ALL = 1 +SIGHASH_NONE = 2 +SIGHASH_SINGLE = 3 +SIGHASH_ANYONECANPAY = 0x80 + +def FindAndDelete(script, sig): + """Consensus critical, see FindAndDelete() in Satoshi codebase""" + r = b'' + last_sop_idx = sop_idx = 0 + skip = True + for (opcode, data, sop_idx) in script.raw_iter(): + if not skip: + r += script[last_sop_idx:sop_idx] + last_sop_idx = sop_idx + if script[sop_idx:sop_idx + len(sig)] == sig: + skip = True + else: + skip = False + if not skip: + r += script[last_sop_idx:] + return CScript(r) + + +def SignatureHash(script, txTo, inIdx, hashtype): + """Consensus-correct SignatureHash + + Returns (hash, err) to precisely match the consensus-critical behavior of + the SIGHASH_SINGLE bug. (inIdx is *not* checked for validity) + """ + HASH_ONE = b'\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' + + if inIdx >= len(txTo.vin): + return (HASH_ONE, "inIdx %d out of range (%d)" % (inIdx, len(txTo.vin))) + txtmp = CTransaction(txTo) + + for txin in txtmp.vin: + txin.scriptSig = b'' + txtmp.vin[inIdx].scriptSig = FindAndDelete(script, CScript([OP_CODESEPARATOR])) + + if (hashtype & 0x1f) == SIGHASH_NONE: + txtmp.vout = [] + + for i in range(len(txtmp.vin)): + if i != inIdx: + txtmp.vin[i].nSequence = 0 + + elif (hashtype & 0x1f) == SIGHASH_SINGLE: + outIdx = inIdx + if outIdx >= len(txtmp.vout): + return (HASH_ONE, "outIdx %d out of range (%d)" % (outIdx, len(txtmp.vout))) + + tmp = txtmp.vout[outIdx] + txtmp.vout = [] + for i in range(outIdx): + txtmp.vout.append(CTxOut()) + txtmp.vout.append(tmp) + + for i in range(len(txtmp.vin)): + if i != inIdx: + txtmp.vin[i].nSequence = 0 + + if hashtype & SIGHASH_ANYONECANPAY: + tmp = txtmp.vin[inIdx] + txtmp.vin = [] + txtmp.vin.append(tmp) + + s = txtmp.serialize() + s += struct.pack(b"= 3: + yield self.data[self.index] + self.index += 1 + + +# Helper for parsing the flags specified in the .json files +SCRIPT_VERIFY_NONE = 0 +SCRIPT_VERIFY_P2SH = 1 +SCRIPT_VERIFY_STRICTENC = 1 << 1 +SCRIPT_VERIFY_DERSIG = 1 << 2 +SCRIPT_VERIFY_LOW_S = 1 << 3 +SCRIPT_VERIFY_NULLDUMMY = 1 << 4 +SCRIPT_VERIFY_SIGPUSHONLY = 1 << 5 +SCRIPT_VERIFY_MINIMALDATA = 1 << 6 +SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = 1 << 7 +SCRIPT_VERIFY_CLEANSTACK = 1 << 8 + +flag_map = { + "": SCRIPT_VERIFY_NONE, + "NONE": SCRIPT_VERIFY_NONE, + "P2SH": SCRIPT_VERIFY_P2SH, + "STRICTENC": SCRIPT_VERIFY_STRICTENC, + "DERSIG": SCRIPT_VERIFY_DERSIG, + "LOW_S": SCRIPT_VERIFY_LOW_S, + "NULLDUMMY": SCRIPT_VERIFY_NULLDUMMY, + "SIGPUSHONLY": SCRIPT_VERIFY_SIGPUSHONLY, + "MINIMALDATA": SCRIPT_VERIFY_MINIMALDATA, + "DISCOURAGE_UPGRADABLE_NOPS": SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS, + "CLEANSTACK": SCRIPT_VERIFY_CLEANSTACK, +} + +def ParseScriptFlags(flag_string): + flags = 0 + for x in flag_string.split(","): + if x in flag_map: + flags |= flag_map[x] + else: + print "Error: unrecognized script flag: ", x + return flags + +''' +Given a string that is a scriptsig or scriptpubkey from the .json files above, +convert it to a CScript() +''' +# Replicates behavior from core_read.cpp +def ParseScript(json_script): + script = json_script.split(" ") + parsed_script = CScript() + for x in script: + if len(x) == 0: + # Empty string, ignore. + pass + elif x.isdigit() or (len(x) >= 1 and x[0] == "-" and x[1:].isdigit()): + # Number + n = int(x, 0) + if (n == -1) or (n >= 1 and n <= 16): + parsed_script = CScript(bytes(parsed_script) + bytes(CScript([n]))) + else: + parsed_script += CScriptNum(int(x, 0)) + elif x.startswith("0x"): + # Raw hex data, inserted NOT pushed onto stack: + for i in xrange(2, len(x), 2): + parsed_script = CScript(bytes(parsed_script) + bytes(chr(int(x[i:i+2],16)))) + elif x.startswith("'") and x.endswith("'") and len(x) >= 2: + # Single-quoted string, pushed as data. + parsed_script += CScript([x[1:-1]]) + else: + # opcode, e.g. OP_ADD or ADD: + tryopname = "OP_" + x + if tryopname in OPCODES_BY_NAME: + parsed_script += CScriptOp(OPCODES_BY_NAME["OP_" + x]) + else: + print "ParseScript: error parsing '%s'" % x + return "" + return parsed_script + +class TestBuilder(object): + def create_credit_tx(self, scriptPubKey): + # self.tx1 is a coinbase transaction, modeled after the one created by script_tests.cpp + # This allows us to reuse signatures created in the unit test framework. + self.tx1 = create_coinbase() # this has a bip34 scriptsig, + self.tx1.vin[0].scriptSig = CScript([0, 0]) # but this matches the unit tests + self.tx1.vout[0].nValue = 0 + self.tx1.vout[0].scriptPubKey = scriptPubKey + self.tx1.rehash() + def create_spend_tx(self, scriptSig): + self.tx2 = create_transaction(self.tx1, 0, CScript(), 0) + self.tx2.vin[0].scriptSig = scriptSig + self.tx2.vout[0].scriptPubKey = CScript() + self.tx2.rehash() + def rehash(self): + self.tx1.rehash() + self.tx2.rehash() + +# This test uses the (default) two nodes provided by ComparisonTestFramework, +# specified on the command line with --testbinary and --refbinary. +# See comptool.py +class ScriptTest(ComparisonTestFramework): + + def run_test(self): + # Set up the comparison tool TestManager + test = TestManager(self, self.options.tmpdir) + test.add_all_connections(self.nodes) + + # Load scripts + self.scripts = ScriptTestFile([script_valid_file, script_invalid_file]) + self.scripts.load_files() + + # Some variables we re-use between test instances (to build blocks) + self.tip = None + self.block_time = None + + NetworkThread().start() # Start up network handling in another thread + test.run() + + def generate_test_instance(self, pubkeystring, scriptsigstring): + scriptpubkey = ParseScript(pubkeystring) + scriptsig = ParseScript(scriptsigstring) + + test = TestInstance(sync_every_block=False) + test_build = TestBuilder() + test_build.create_credit_tx(scriptpubkey) + test_build.create_spend_tx(scriptsig) + test_build.rehash() + + block = create_block(self.tip, test_build.tx1, self.block_time) + self.block_time += 1 + block.solve() + self.tip = block.sha256 + test.blocks_and_transactions = [[block, True]] + + for i in xrange(100): + block = create_block(self.tip, create_coinbase(), self.block_time) + self.block_time += 1 + block.solve() + self.tip = block.sha256 + test.blocks_and_transactions.append([block, True]) + + block = create_block(self.tip, create_coinbase(), self.block_time) + self.block_time += 1 + block.vtx.append(test_build.tx2) + block.hashMerkleRoot = block.calc_merkle_root() + block.rehash() + block.solve() + test.blocks_and_transactions.append([block, None]) + return test + + # This generates the tests for TestManager. + def get_tests(self): + self.tip = int ("0x" + self.nodes[0].getbestblockhash() + "L", 0) + self.block_time = 1333230000 # before the BIP16 switchover + + ''' + Create a new block with an anyone-can-spend coinbase + ''' + block = create_block(self.tip, create_coinbase(), self.block_time) + self.block_time += 1 + block.solve() + self.tip = block.sha256 + yield TestInstance(objects=[[block, True]]) + + ''' + Build out to 100 blocks total, maturing the coinbase. + ''' + test = TestInstance(objects=[], sync_every_block=False, sync_every_tx=False) + for i in xrange(100): + b = create_block(self.tip, create_coinbase(), self.block_time) + b.solve() + test.blocks_and_transactions.append([b, True]) + self.tip = b.sha256 + self.block_time += 1 + yield test + + ''' Iterate through script tests. ''' + counter = 0 + for script_test in self.scripts.get_records(): + ''' Reset the blockchain to genesis block + 100 blocks. ''' + if self.nodes[0].getblockcount() > 101: + self.nodes[0].invalidateblock(self.nodes[0].getblockhash(102)) + self.nodes[1].invalidateblock(self.nodes[1].getblockhash(102)) + + self.tip = int ("0x" + self.nodes[0].getbestblockhash() + "L", 0) + + [scriptsig, scriptpubkey, flags] = script_test[0:3] + flags = ParseScriptFlags(flags) + + # We can use block time to determine whether the nodes should be + # enforcing BIP16. + # + # We intentionally let the block time grow by 1 each time. + # This forces the block hashes to differ between tests, so that + # a call to invalidateblock doesn't interfere with a later test. + if (flags & SCRIPT_VERIFY_P2SH): + self.block_time = 1333238400 + counter # Advance to enforcing BIP16 + else: + self.block_time = 1333230000 + counter # Before the BIP16 switchover + + print "Script test: [%s]" % script_test + + yield self.generate_test_instance(scriptpubkey, scriptsig) + counter += 1 + +if __name__ == '__main__': + ScriptTest().main()