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133 lines
4.1 KiB
Python
Executable File
133 lines
4.1 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2019 Daniel Kraft
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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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# Tests that the "hashBlock" field of the Merkle coinbase tx in an auxpow
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# is zero'ed when the block is processed/retrieved from a node, and that
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# auxpows with a zero hashBlock are actually accepted just fine. (This has
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# always been the case, but the test just makes sure this is explicitly
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# tested for the future as well.)
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.blocktools import (
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create_block,
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create_coinbase,
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)
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from test_framework.messages import (
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CAuxPow,
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CBlock,
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CInv,
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msg_getdata,
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uint256_from_compact,
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)
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from test_framework.p2p import (
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P2PDataStore,
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P2PInterface,
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)
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from test_framework.util import assert_equal
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from test_framework.auxpow_testing import computeAuxpow
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import codecs
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from io import BytesIO
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class P2PBlockGetter (P2PInterface):
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"""
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P2P connection class that allows requesting blocks from a node's P2P
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connection to verify how they are sent.
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"""
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def on_block (self, msg):
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self.block = msg.block
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def getBlock (self, blkHash):
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self.block = None
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inv = CInv (t=2, h=int (blkHash, 16))
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self.send_message (msg_getdata (inv=[inv]))
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self.wait_until (lambda: self.block is not None)
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return self.block
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class AuxpowZeroHashTest (BitcoinTestFramework):
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def set_test_params (self):
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self.num_nodes = 1
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self.setup_clean_chain = True
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self.extra_args = [["-whitelist=127.0.0.1"]]
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def run_test (self):
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node = self.nodes[0]
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p2pStore = node.add_p2p_connection (P2PDataStore ())
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p2pGetter = node.add_p2p_connection (P2PBlockGetter ())
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self.log.info ("Adding a block with non-zero hash in the auxpow...")
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blk, blkHash = self.createBlock ()
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blk.auxpow.hashBlock = 12345678
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blkHex = blk.serialize ().hex ()
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assert_equal (node.submitblock (blkHex), None)
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assert_equal (node.getbestblockhash (), blkHash)
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self.log.info ("Retrieving block through RPC...")
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gotHex = node.getblock (blkHash, 0)
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assert gotHex != blkHex
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gotBlk = CBlock ()
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gotBlk.deserialize (BytesIO (bytes.fromhex (gotHex)))
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assert_equal (gotBlk.auxpow.hashBlock, 0)
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self.log.info ("Retrieving block through P2P...")
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gotBlk = p2pGetter.getBlock (blkHash)
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assert_equal (gotBlk.auxpow.hashBlock, 0)
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self.log.info ("Sending zero-hash auxpow through RPC...")
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blk, blkHash = self.createBlock ()
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blk.auxpow.hashBlock = 0
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assert_equal (node.submitblock (blk.serialize ().hex ()), None)
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assert_equal (node.getbestblockhash (), blkHash)
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self.log.info ("Sending zero-hash auxpow through P2P...")
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blk, blkHash = self.createBlock ()
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blk.auxpow.hashBlock = 0
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p2pStore.send_blocks_and_test ([blk], node, success=True)
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assert_equal (node.getbestblockhash (), blkHash)
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self.log.info ("Sending non-zero nIndex auxpow through RPC...")
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blk, blkHash = self.createBlock ()
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blk.auxpow.nIndex = 42
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assert_equal (node.submitblock (blk.serialize ().hex ()), None)
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assert_equal (node.getbestblockhash (), blkHash)
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self.log.info ("Sending non-zero nIndex auxpow through P2P...")
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blk, blkHash = self.createBlock ()
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blk.auxpow.nIndex = 42
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p2pStore.send_blocks_and_test ([blk], node, success=True)
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assert_equal (node.getbestblockhash (), blkHash)
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def createBlock (self):
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"""
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Creates and mines a new block with auxpow.
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"""
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bestHash = self.nodes[0].getbestblockhash ()
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bestBlock = self.nodes[0].getblock (bestHash)
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tip = int (bestHash, 16)
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height = bestBlock["height"] + 1
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time = bestBlock["time"] + 1
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block = create_block (tip, create_coinbase (height), time)
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block.mark_auxpow ()
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block.rehash ()
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newHash = "%064x" % block.sha256
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target = b"%064x" % uint256_from_compact (block.nBits)
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auxpowHex = computeAuxpow (newHash, target, True)
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block.auxpow = CAuxPow ()
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block.auxpow.deserialize (BytesIO (bytes.fromhex (auxpowHex)))
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return block, newHash
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if __name__ == '__main__':
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AuxpowZeroHashTest ().main ()
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