182 lines
6.2 KiB
182 lines
6.2 KiB
#!/usr/bin/env python2 |
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# Copyright (c) 2014 The Bitcoin Core developers |
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# Distributed under the MIT software license, see the accompanying |
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# file COPYING or http://www.opensource.org/licenses/mit-license.php. |
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from test_framework.test_framework import BitcoinTestFramework |
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from test_framework.util import * |
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from binascii import a2b_hex, b2a_hex |
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from hashlib import sha256 |
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from struct import pack |
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def check_array_result(object_array, to_match, expected): |
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""" |
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Pass in array of JSON objects, a dictionary with key/value pairs |
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to match against, and another dictionary with expected key/value |
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pairs. |
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""" |
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num_matched = 0 |
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for item in object_array: |
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all_match = True |
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for key,value in to_match.items(): |
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if item[key] != value: |
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all_match = False |
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if not all_match: |
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continue |
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for key,value in expected.items(): |
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if item[key] != value: |
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raise AssertionError("%s : expected %s=%s"%(str(item), str(key), str(value))) |
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num_matched = num_matched+1 |
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if num_matched == 0: |
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raise AssertionError("No objects matched %s"%(str(to_match))) |
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def b2x(b): |
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return b2a_hex(b).decode('ascii') |
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# NOTE: This does not work for signed numbers (set the high bit) or zero (use b'\0') |
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def encodeUNum(n): |
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s = bytearray(b'\1') |
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while n > 127: |
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s[0] += 1 |
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s.append(n % 256) |
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n //= 256 |
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s.append(n) |
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return bytes(s) |
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def varlenEncode(n): |
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if n < 0xfd: |
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return pack('<B', n) |
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if n <= 0xffff: |
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return b'\xfd' + pack('<H', n) |
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if n <= 0xffffffff: |
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return b'\xfe' + pack('<L', n) |
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return b'\xff' + pack('<Q', n) |
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def dblsha(b): |
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return sha256(sha256(b).digest()).digest() |
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def genmrklroot(leaflist): |
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cur = leaflist |
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while len(cur) > 1: |
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n = [] |
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if len(cur) & 1: |
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cur.append(cur[-1]) |
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for i in range(0, len(cur), 2): |
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n.append(dblsha(cur[i] + cur[i+1])) |
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cur = n |
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return cur[0] |
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def template_to_bytes(tmpl, txlist): |
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blkver = pack('<L', tmpl['version']) |
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mrklroot = genmrklroot(list(dblsha(a) for a in txlist)) |
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timestamp = pack('<L', tmpl['curtime']) |
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nonce = b'\0\0\0\0' |
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blk = blkver + a2b_hex(tmpl['previousblockhash'])[::-1] + mrklroot + timestamp + a2b_hex(tmpl['bits'])[::-1] + nonce |
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blk += varlenEncode(len(txlist)) |
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for tx in txlist: |
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blk += tx |
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return blk |
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def template_to_hex(tmpl, txlist): |
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return b2x(template_to_bytes(tmpl, txlist)) |
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def assert_template(node, tmpl, txlist, expect): |
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rsp = node.getblocktemplate({'data':template_to_hex(tmpl, txlist),'mode':'proposal'}) |
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if rsp != expect: |
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raise AssertionError('unexpected: %s' % (rsp,)) |
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class GetBlockTemplateProposalTest(BitcoinTestFramework): |
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''' |
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Test block proposals with getblocktemplate. |
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''' |
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def run_test(self): |
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node = self.nodes[0] |
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node.generate(1) # Mine a block to leave initial block download |
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tmpl = node.getblocktemplate() |
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if 'coinbasetxn' not in tmpl: |
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rawcoinbase = encodeUNum(tmpl['height']) |
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rawcoinbase += b'\x01-' |
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hexcoinbase = b2x(rawcoinbase) |
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hexoutval = b2x(pack('<Q', tmpl['coinbasevalue'])) |
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tmpl['coinbasetxn'] = {'data': '01000000' + '01' + '0000000000000000000000000000000000000000000000000000000000000000ffffffff' + ('%02x' % (len(rawcoinbase),)) + hexcoinbase + 'fffffffe' + '01' + hexoutval + '00' + '00000000'} |
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txlist = list(bytearray(a2b_hex(a['data'])) for a in (tmpl['coinbasetxn'],) + tuple(tmpl['transactions'])) |
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# Test 0: Capability advertised |
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assert('proposal' in tmpl['capabilities']) |
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# NOTE: This test currently FAILS (regtest mode doesn't enforce block height in coinbase) |
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## Test 1: Bad height in coinbase |
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#txlist[0][4+1+36+1+1] += 1 |
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#assert_template(node, tmpl, txlist, 'FIXME') |
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#txlist[0][4+1+36+1+1] -= 1 |
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# Test 2: Bad input hash for gen tx |
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txlist[0][4+1] += 1 |
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assert_template(node, tmpl, txlist, 'bad-cb-missing') |
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txlist[0][4+1] -= 1 |
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# Test 3: Truncated final tx |
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lastbyte = txlist[-1].pop() |
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try: |
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assert_template(node, tmpl, txlist, 'n/a') |
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except JSONRPCException: |
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pass # Expected |
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txlist[-1].append(lastbyte) |
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# Test 4: Add an invalid tx to the end (duplicate of gen tx) |
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txlist.append(txlist[0]) |
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assert_template(node, tmpl, txlist, 'bad-txns-duplicate') |
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txlist.pop() |
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# Test 5: Add an invalid tx to the end (non-duplicate) |
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txlist.append(bytearray(txlist[0])) |
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txlist[-1][4+1] = b'\xff' |
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assert_template(node, tmpl, txlist, 'bad-txns-inputs-missingorspent') |
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txlist.pop() |
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# Test 6: Future tx lock time |
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txlist[0][-4:] = b'\xff\xff\xff\xff' |
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assert_template(node, tmpl, txlist, 'bad-txns-nonfinal') |
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txlist[0][-4:] = b'\0\0\0\0' |
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# Test 7: Bad tx count |
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txlist.append(b'') |
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try: |
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assert_template(node, tmpl, txlist, 'n/a') |
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except JSONRPCException: |
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pass # Expected |
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txlist.pop() |
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# Test 8: Bad bits |
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realbits = tmpl['bits'] |
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tmpl['bits'] = '1c0000ff' # impossible in the real world |
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assert_template(node, tmpl, txlist, 'bad-diffbits') |
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tmpl['bits'] = realbits |
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# Test 9: Bad merkle root |
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rawtmpl = template_to_bytes(tmpl, txlist) |
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rawtmpl[4+32] = (rawtmpl[4+32] + 1) % 0x100 |
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rsp = node.getblocktemplate({'data':b2x(rawtmpl),'mode':'proposal'}) |
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if rsp != 'bad-txnmrklroot': |
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raise AssertionError('unexpected: %s' % (rsp,)) |
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# Test 10: Bad timestamps |
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realtime = tmpl['curtime'] |
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tmpl['curtime'] = 0x7fffffff |
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assert_template(node, tmpl, txlist, 'time-too-new') |
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tmpl['curtime'] = 0 |
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assert_template(node, tmpl, txlist, 'time-too-old') |
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tmpl['curtime'] = realtime |
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# Test 11: Valid block |
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assert_template(node, tmpl, txlist, None) |
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# Test 12: Orphan block |
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tmpl['previousblockhash'] = 'ff00' * 16 |
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assert_template(node, tmpl, txlist, 'inconclusive-not-best-prevblk') |
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if __name__ == '__main__': |
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GetBlockTemplateProposalTest().main()
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