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99 lines
3.2 KiB
Python
Executable File
99 lines
3.2 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2019-2021 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 what happens if we submit a valid block with invalid auxpow. Obviously
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# the block should not be accepted, but it should also not be marked as
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# permanently invalid. So resubmitting the same block with a valid auxpow
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# should then work fine.
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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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uint256_from_compact,
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)
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from test_framework.p2p import P2PDataStore
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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 AuxpowInvalidPoWTest (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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peer = node.add_p2p_connection (P2PDataStore ())
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self.log.info ("Sending block with invalid auxpow over P2P...")
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tip = node.getbestblockhash ()
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blk, blkHash = self.createBlock ()
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blk = self.addAuxpow (blk, blkHash, False)
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peer.send_blocks_and_test ([blk], node, force_send=True,
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success=False, reject_reason="high-hash")
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assert_equal (node.getbestblockhash (), tip)
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self.log.info ("Sending the same block with valid auxpow...")
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blk = self.addAuxpow (blk, blkHash, True)
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peer.send_blocks_and_test ([blk], node, success=True)
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assert_equal (node.getbestblockhash (), blkHash)
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self.log.info ("Submitting block with invalid auxpow...")
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tip = node.getbestblockhash ()
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blk, blkHash = self.createBlock ()
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blk = self.addAuxpow (blk, blkHash, False)
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assert_equal (node.submitblock (blk.serialize ().hex ()), "high-hash")
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assert_equal (node.getbestblockhash (), tip)
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self.log.info ("Submitting block with valid auxpow...")
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blk = self.addAuxpow (blk, blkHash, True)
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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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def createBlock (self):
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"""
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Creates a new block that is valid for the current tip. It is marked as
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auxpow, but the auxpow is not yet filled in.
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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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return block, newHash
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def addAuxpow (self, block, blkHash, ok):
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"""
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Fills in the auxpow for the given block message. It is either
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chosen to be valid (ok = True) or invalid (ok = False).
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"""
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target = b"%064x" % uint256_from_compact (block.nBits)
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auxpowHex = computeAuxpow (blkHash, target, ok)
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block.auxpow = CAuxPow ()
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block.auxpow.deserialize (BytesIO (bytes.fromhex (auxpowHex)))
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return block
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if __name__ == '__main__':
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AuxpowInvalidPoWTest ().main ()
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