diff options
Diffstat (limited to 'test/functional/getblocktemplate_proposals.py')
| -rwxr-xr-x | test/functional/getblocktemplate_proposals.py | 149 |
1 files changed, 57 insertions, 92 deletions
diff --git a/test/functional/getblocktemplate_proposals.py b/test/functional/getblocktemplate_proposals.py index 788e3ce259..a65d14ce06 100755 --- a/test/functional/getblocktemplate_proposals.py +++ b/test/functional/getblocktemplate_proposals.py @@ -4,66 +4,21 @@ # file COPYING or http://www.opensource.org/licenses/mit-license.php. """Test block proposals with getblocktemplate.""" -from binascii import a2b_hex, b2a_hex -from hashlib import sha256 -from struct import pack +from binascii import b2a_hex +import copy from test_framework.blocktools import create_coinbase from test_framework.test_framework import BitcoinTestFramework +from test_framework.mininode import CBlock from test_framework.util import * def b2x(b): return b2a_hex(b).decode('ascii') -# NOTE: This does not work for signed numbers (set the high bit) or zero (use b'\0') -def encodeUNum(n): - s = bytearray(b'\1') - while n > 127: - s[0] += 1 - s.append(n % 256) - n //= 256 - s.append(n) - return bytes(s) - -def varlenEncode(n): - if n < 0xfd: - return pack('<B', n) - if n <= 0xffff: - return b'\xfd' + pack('<H', n) - if n <= 0xffffffff: - return b'\xfe' + pack('<L', n) - return b'\xff' + pack('<Q', n) - -def dblsha(b): - return sha256(sha256(b).digest()).digest() - -def genmrklroot(leaflist): - cur = leaflist - while len(cur) > 1: - n = [] - if len(cur) & 1: - cur.append(cur[-1]) - for i in range(0, len(cur), 2): - n.append(dblsha(cur[i] + cur[i + 1])) - cur = n - return cur[0] - -def template_to_bytearray(tmpl, txlist): - blkver = pack('<L', tmpl['version']) - mrklroot = genmrklroot(list(dblsha(a) for a in txlist)) - timestamp = pack('<L', tmpl['curtime']) - nonce = b'\0\0\0\0' - blk = blkver + a2b_hex(tmpl['previousblockhash'])[::-1] + mrklroot + timestamp + a2b_hex(tmpl['bits'])[::-1] + nonce - blk += varlenEncode(len(txlist)) - for tx in txlist: - blk += tx - return bytearray(blk) - -def template_to_hex(tmpl, txlist): - return b2x(template_to_bytearray(tmpl, txlist)) - -def assert_template(node, tmpl, txlist, expect): - rsp = node.getblocktemplate({'data': template_to_hex(tmpl, txlist), 'mode': 'proposal'}) +def assert_template(node, block, expect, rehash=True): + if rehash: + block.hashMerkleRoot = block.calc_merkle_root() + rsp = node.getblocktemplate({'data': b2x(block.serialize()), 'mode': 'proposal'}) assert_equal(rsp, expect) class GetBlockTemplateProposalTest(BitcoinTestFramework): @@ -78,74 +33,84 @@ class GetBlockTemplateProposalTest(BitcoinTestFramework): # Mine a block to leave initial block download node.generate(1) tmpl = node.getblocktemplate() + self.log.info("getblocktemplate: Test capability advertised") + assert 'proposal' in tmpl['capabilities'] assert 'coinbasetxn' not in tmpl coinbase_tx = create_coinbase(height=int(tmpl["height"]) + 1) # sequence numbers must not be max for nLockTime to have effect coinbase_tx.vin[0].nSequence = 2 ** 32 - 2 - tmpl['coinbasetxn'] = {'data': coinbase_tx.serialize()} - txlist = [bytearray(coinbase_tx.serialize())] + coinbase_tx.rehash() - self.log.info("getblocktemplate: Test capability advertised") - assert 'proposal' in tmpl['capabilities'] + block = CBlock() + block.nVersion = tmpl["version"] + block.hashPrevBlock = int(tmpl["previousblockhash"], 16) + block.nTime = tmpl["curtime"] + block.nBits = int(tmpl["bits"], 16) + block.nNonce = 0 + block.vtx = [coinbase_tx] self.log.info("getblocktemplate: Test bad input hash for coinbase transaction") - txlist[0][4 + 1] += 1 - assert_template(node, tmpl, txlist, 'bad-cb-missing') - txlist[0][4 + 1] -= 1 + bad_block = copy.deepcopy(block) + bad_block.vtx[0].vin[0].prevout.hash += 1 + bad_block.vtx[0].rehash() + assert_template(node, bad_block, 'bad-cb-missing') + self.log.info("getblocktemplate: Test truncated final transaction") - lastbyte = txlist[-1].pop() - assert_raises_jsonrpc(-22, "Block decode failed", assert_template, node, tmpl, txlist, 'n/a') - txlist[-1].append(lastbyte) + assert_raises_jsonrpc(-22, "Block decode failed", node.getblocktemplate, {'data': b2x(block.serialize()[:-1]), 'mode': 'proposal'}) self.log.info("getblocktemplate: Test duplicate transaction") - txlist.append(txlist[0]) - assert_template(node, tmpl, txlist, 'bad-txns-duplicate') - txlist.pop() + bad_block = copy.deepcopy(block) + bad_block.vtx.append(bad_block.vtx[0]) + assert_template(node, bad_block, 'bad-txns-duplicate') self.log.info("getblocktemplate: Test invalid transaction") - txlist.append(bytearray(txlist[0])) - txlist[-1][4 + 1] = 0xff - assert_template(node, tmpl, txlist, 'bad-txns-inputs-missingorspent') - txlist.pop() + bad_block = copy.deepcopy(block) + bad_tx = copy.deepcopy(bad_block.vtx[0]) + bad_tx.vin[0].prevout.hash = 255 + bad_tx.rehash() + bad_block.vtx.append(bad_tx) + assert_template(node, bad_block, 'bad-txns-inputs-missingorspent') self.log.info("getblocktemplate: Test nonfinal transaction") - txlist[0][-4:] = b'\xff\xff\xff\xff' - assert_template(node, tmpl, txlist, 'bad-txns-nonfinal') - txlist[0][-4:] = b'\0\0\0\0' + bad_block = copy.deepcopy(block) + bad_block.vtx[0].nLockTime = 2 ** 32 - 1 + bad_block.vtx[0].rehash() + assert_template(node, bad_block, 'bad-txns-nonfinal') self.log.info("getblocktemplate: Test bad tx count") - txlist.append(b'') - assert_raises_jsonrpc(-22, 'Block decode failed', assert_template, node, tmpl, txlist, 'n/a') - txlist.pop() + # The tx count is immediately after the block header + TX_COUNT_OFFSET = 80 + bad_block_sn = bytearray(block.serialize()) + assert_equal(bad_block_sn[TX_COUNT_OFFSET], 1) + bad_block_sn[TX_COUNT_OFFSET] += 1 + assert_raises_jsonrpc(-22, "Block decode failed", node.getblocktemplate, {'data': b2x(bad_block_sn), 'mode': 'proposal'}) self.log.info("getblocktemplate: Test bad bits") - realbits = tmpl['bits'] - tmpl['bits'] = '1c0000ff' # impossible in the real world - assert_template(node, tmpl, txlist, 'bad-diffbits') - tmpl['bits'] = realbits + bad_block = copy.deepcopy(block) + bad_block.nBits = 469762303 # impossible in the real world + assert_template(node, bad_block, 'bad-diffbits') self.log.info("getblocktemplate: Test bad merkle root") - rawtmpl = template_to_bytearray(tmpl, txlist) - rawtmpl[4 + 32] = (rawtmpl[4 + 32] + 1) % 0x100 - rsp = node.getblocktemplate({'data': b2x(rawtmpl), 'mode': 'proposal'}) - assert_equal(rsp, 'bad-txnmrklroot') + bad_block = copy.deepcopy(block) + bad_block.hashMerkleRoot += 1 + assert_template(node, bad_block, 'bad-txnmrklroot', False) self.log.info("getblocktemplate: Test bad timestamps") - realtime = tmpl['curtime'] - tmpl['curtime'] = 0x7fffffff - assert_template(node, tmpl, txlist, 'time-too-new') - tmpl['curtime'] = 0 - assert_template(node, tmpl, txlist, 'time-too-old') - tmpl['curtime'] = realtime + bad_block = copy.deepcopy(block) + bad_block.nTime = 2 ** 31 - 1 + assert_template(node, bad_block, 'time-too-new') + bad_block.nTime = 0 + assert_template(node, bad_block, 'time-too-old') self.log.info("getblocktemplate: Test valid block") - assert_template(node, tmpl, txlist, None) + assert_template(node, block, None) self.log.info("getblocktemplate: Test not best block") - tmpl['previousblockhash'] = 'ff00' * 16 - assert_template(node, tmpl, txlist, 'inconclusive-not-best-prevblk') + bad_block = copy.deepcopy(block) + bad_block.hashPrevBlock = 123 + assert_template(node, bad_block, 'inconclusive-not-best-prevblk') if __name__ == '__main__': GetBlockTemplateProposalTest().main() |