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115 lines
6.1 KiB
115 lines
6.1 KiB
#!/usr/bin/env python3 |
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# Copyright (c) 2014-2020 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.blocktools import COINBASE_MATURITY |
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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.setup_clean_chain = True |
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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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# Add enough mature utxos to the wallet, so that all txs spend confirmed coins |
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miniwallet.generate(5) |
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self.nodes[0].generate(COINBASE_MATURITY) |
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self.sync_all() |
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chain_height = self.nodes[1].getblockcount() |
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assert_equal(chain_height, 105) |
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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.nodes[0].generate(1) |
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blockhash = self.nodes[0].getblockhash(chain_height + 1) |
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self.sync_all() |
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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() # 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.nodes[0].generate(1) |
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self.sync_all() |
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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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