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108 lines
5.8 KiB
108 lines
5.8 KiB
#!/usr/bin/env python3
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# Copyright (c) 2014-2021 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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"""Test gettxoutproof and verifytxoutproof RPCs."""
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from test_framework.messages import (
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CMerkleBlock,
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from_hex,
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)
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_equal,
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assert_raises_rpc_error,
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)
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from test_framework.wallet import MiniWallet
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class MerkleBlockTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 2
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self.extra_args = [
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[],
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["-txindex"],
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]
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def run_test(self):
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miniwallet = MiniWallet(self.nodes[0])
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chain_height = self.nodes[1].getblockcount()
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assert_equal(chain_height, 200)
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txid1 = miniwallet.send_self_transfer(from_node=self.nodes[0])['txid']
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txid2 = miniwallet.send_self_transfer(from_node=self.nodes[0])['txid']
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# This will raise an exception because the transaction is not yet in a block
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assert_raises_rpc_error(-5, "Transaction not yet in block", self.nodes[0].gettxoutproof, [txid1])
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self.generate(self.nodes[0], 1)
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blockhash = self.nodes[0].getblockhash(chain_height + 1)
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txlist = []
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blocktxn = self.nodes[0].getblock(blockhash, True)["tx"]
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txlist.append(blocktxn[1])
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txlist.append(blocktxn[2])
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assert_equal(self.nodes[0].verifytxoutproof(self.nodes[0].gettxoutproof([txid1])), [txid1])
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assert_equal(self.nodes[0].verifytxoutproof(self.nodes[0].gettxoutproof([txid1, txid2])), txlist)
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assert_equal(self.nodes[0].verifytxoutproof(self.nodes[0].gettxoutproof([txid1, txid2], blockhash)), txlist)
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txin_spent = miniwallet.get_utxo(txid=txid2) # Get the change from txid2
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tx3 = miniwallet.send_self_transfer(from_node=self.nodes[0], utxo_to_spend=txin_spent)
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txid3 = tx3['txid']
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self.generate(self.nodes[0], 1)
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txid_spent = txin_spent["txid"]
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txid_unspent = txid1 # Input was change from txid2, so txid1 should be unspent
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# Invalid txids
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assert_raises_rpc_error(-8, "txid must be of length 64 (not 32, for '00000000000000000000000000000000')", self.nodes[0].gettxoutproof, ["00000000000000000000000000000000"], blockhash)
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assert_raises_rpc_error(-8, "txid must be hexadecimal string (not 'ZZZ0000000000000000000000000000000000000000000000000000000000000')", self.nodes[0].gettxoutproof, ["ZZZ0000000000000000000000000000000000000000000000000000000000000"], blockhash)
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# Invalid blockhashes
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assert_raises_rpc_error(-8, "blockhash must be of length 64 (not 32, for '00000000000000000000000000000000')", self.nodes[0].gettxoutproof, [txid_spent], "00000000000000000000000000000000")
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assert_raises_rpc_error(-8, "blockhash must be hexadecimal string (not 'ZZZ0000000000000000000000000000000000000000000000000000000000000')", self.nodes[0].gettxoutproof, [txid_spent], "ZZZ0000000000000000000000000000000000000000000000000000000000000")
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# We can't find the block from a fully-spent tx
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assert_raises_rpc_error(-5, "Transaction not yet in block", self.nodes[0].gettxoutproof, [txid_spent])
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# We can get the proof if we specify the block
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assert_equal(self.nodes[0].verifytxoutproof(self.nodes[0].gettxoutproof([txid_spent], blockhash)), [txid_spent])
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# We can't get the proof if we specify a non-existent block
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assert_raises_rpc_error(-5, "Block not found", self.nodes[0].gettxoutproof, [txid_spent], "0000000000000000000000000000000000000000000000000000000000000000")
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# We can get the proof if the transaction is unspent
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assert_equal(self.nodes[0].verifytxoutproof(self.nodes[0].gettxoutproof([txid_unspent])), [txid_unspent])
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# We can get the proof if we provide a list of transactions and one of them is unspent. The ordering of the list should not matter.
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assert_equal(sorted(self.nodes[0].verifytxoutproof(self.nodes[0].gettxoutproof([txid1, txid2]))), sorted(txlist))
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assert_equal(sorted(self.nodes[0].verifytxoutproof(self.nodes[0].gettxoutproof([txid2, txid1]))), sorted(txlist))
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# We can always get a proof if we have a -txindex
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assert_equal(self.nodes[0].verifytxoutproof(self.nodes[1].gettxoutproof([txid_spent])), [txid_spent])
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# We can't get a proof if we specify transactions from different blocks
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assert_raises_rpc_error(-5, "Not all transactions found in specified or retrieved block", self.nodes[0].gettxoutproof, [txid1, txid3])
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# Test empty list
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assert_raises_rpc_error(-8, "Parameter 'txids' cannot be empty", self.nodes[0].gettxoutproof, [])
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# Test duplicate txid
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assert_raises_rpc_error(-8, 'Invalid parameter, duplicated txid', self.nodes[0].gettxoutproof, [txid1, txid1])
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# Now we'll try tweaking a proof.
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proof = self.nodes[1].gettxoutproof([txid1, txid2])
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assert txid1 in self.nodes[0].verifytxoutproof(proof)
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assert txid2 in self.nodes[1].verifytxoutproof(proof)
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tweaked_proof = from_hex(CMerkleBlock(), proof)
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# Make sure that our serialization/deserialization is working
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assert txid1 in self.nodes[0].verifytxoutproof(tweaked_proof.serialize().hex())
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# Check to see if we can go up the merkle tree and pass this off as a
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# single-transaction block
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tweaked_proof.txn.nTransactions = 1
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tweaked_proof.txn.vHash = [tweaked_proof.header.hashMerkleRoot]
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tweaked_proof.txn.vBits = [True] + [False]*7
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for n in self.nodes:
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assert not n.verifytxoutproof(tweaked_proof.serialize().hex())
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# TODO: try more variants, eg transactions at different depths, and
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# verify that the proofs are invalid
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if __name__ == '__main__':
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MerkleBlockTest().main()
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