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264 lines
12 KiB
264 lines
12 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 mining RPCs |
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- getmininginfo |
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- getblocktemplate proposal mode |
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- submitblock""" |
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import copy |
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from decimal import Decimal |
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from test_framework.blocktools import ( |
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create_coinbase, |
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NORMAL_GBT_REQUEST_PARAMS, |
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TIME_GENESIS_BLOCK, |
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) |
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from test_framework.messages import ( |
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CBlock, |
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CBlockHeader, |
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BLOCK_HEADER_SIZE, |
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) |
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from test_framework.p2p import P2PDataStore |
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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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VERSIONBITS_TOP_BITS = 0x20000000 |
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VERSIONBITS_DEPLOYMENT_TESTDUMMY_BIT = 28 |
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def assert_template(node, block, expect, rehash=True): |
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if rehash: |
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block.hashMerkleRoot = block.calc_merkle_root() |
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rsp = node.getblocktemplate(template_request={ |
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'data': block.serialize().hex(), |
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'mode': 'proposal', |
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'rules': ['segwit'], |
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}) |
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assert_equal(rsp, expect) |
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class MiningTest(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.supports_cli = False |
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def mine_chain(self): |
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self.log.info('Create some old blocks') |
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for t in range(TIME_GENESIS_BLOCK, TIME_GENESIS_BLOCK + 200 * 600, 600): |
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self.nodes[0].setmocktime(t) |
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self.nodes[0].generate(1) |
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mining_info = self.nodes[0].getmininginfo() |
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assert_equal(mining_info['blocks'], 200) |
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assert_equal(mining_info['currentblocktx'], 0) |
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assert_equal(mining_info['currentblockweight'], 4000) |
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self.log.info('test blockversion') |
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self.restart_node(0, extra_args=['-mocktime={}'.format(t), '-blockversion=1337']) |
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self.connect_nodes(0, 1) |
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assert_equal(1337, self.nodes[0].getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)['version']) |
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self.restart_node(0, extra_args=['-mocktime={}'.format(t)]) |
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self.connect_nodes(0, 1) |
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assert_equal(VERSIONBITS_TOP_BITS + (1 << VERSIONBITS_DEPLOYMENT_TESTDUMMY_BIT), self.nodes[0].getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)['version']) |
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self.restart_node(0) |
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self.connect_nodes(0, 1) |
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def run_test(self): |
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self.mine_chain() |
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node = self.nodes[0] |
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def assert_submitblock(block, result_str_1, result_str_2=None): |
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block.solve() |
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result_str_2 = result_str_2 or 'duplicate-invalid' |
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assert_equal(result_str_1, node.submitblock(hexdata=block.serialize().hex())) |
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assert_equal(result_str_2, node.submitblock(hexdata=block.serialize().hex())) |
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self.log.info('getmininginfo') |
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mining_info = node.getmininginfo() |
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assert_equal(mining_info['blocks'], 200) |
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assert_equal(mining_info['chain'], self.chain) |
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assert 'currentblocktx' not in mining_info |
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assert 'currentblockweight' not in mining_info |
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assert_equal(mining_info['difficulty'], Decimal('4.656542373906925E-10')) |
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assert_equal(mining_info['networkhashps'], Decimal('0.003333333333333334')) |
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assert_equal(mining_info['pooledtx'], 0) |
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# Mine a block to leave initial block download |
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node.generatetoaddress(1, node.get_deterministic_priv_key().address) |
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tmpl = node.getblocktemplate(NORMAL_GBT_REQUEST_PARAMS) |
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self.log.info("getblocktemplate: Test capability advertised") |
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assert 'proposal' in tmpl['capabilities'] |
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assert 'coinbasetxn' not in tmpl |
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next_height = int(tmpl["height"]) |
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coinbase_tx = create_coinbase(height=next_height) |
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# sequence numbers must not be max for nLockTime to have effect |
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coinbase_tx.vin[0].nSequence = 2**32 - 2 |
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coinbase_tx.rehash() |
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block = CBlock() |
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block.nVersion = tmpl["version"] |
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block.hashPrevBlock = int(tmpl["previousblockhash"], 16) |
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block.nTime = tmpl["curtime"] |
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block.nBits = int(tmpl["bits"], 16) |
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block.nNonce = 0 |
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block.vtx = [coinbase_tx] |
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self.log.info("getblocktemplate: segwit rule must be set") |
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assert_raises_rpc_error(-8, "getblocktemplate must be called with the segwit rule set", node.getblocktemplate) |
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self.log.info("getblocktemplate: Test valid block") |
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assert_template(node, block, None) |
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self.log.info("submitblock: Test block decode failure") |
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assert_raises_rpc_error(-22, "Block decode failed", node.submitblock, block.serialize()[:-15].hex()) |
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self.log.info("getblocktemplate: Test bad input hash for coinbase transaction") |
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bad_block = copy.deepcopy(block) |
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bad_block.vtx[0].vin[0].prevout.hash += 1 |
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bad_block.vtx[0].rehash() |
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assert_template(node, bad_block, 'bad-cb-missing') |
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self.log.info("submitblock: Test invalid coinbase transaction") |
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assert_raises_rpc_error(-22, "Block does not start with a coinbase", node.submitblock, bad_block.serialize().hex()) |
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self.log.info("getblocktemplate: Test truncated final transaction") |
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assert_raises_rpc_error(-22, "Block decode failed", node.getblocktemplate, { |
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'data': block.serialize()[:-1].hex(), |
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'mode': 'proposal', |
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'rules': ['segwit'], |
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}) |
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self.log.info("getblocktemplate: Test duplicate transaction") |
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bad_block = copy.deepcopy(block) |
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bad_block.vtx.append(bad_block.vtx[0]) |
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assert_template(node, bad_block, 'bad-txns-duplicate') |
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assert_submitblock(bad_block, 'bad-txns-duplicate', 'bad-txns-duplicate') |
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self.log.info("getblocktemplate: Test invalid transaction") |
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bad_block = copy.deepcopy(block) |
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bad_tx = copy.deepcopy(bad_block.vtx[0]) |
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bad_tx.vin[0].prevout.hash = 255 |
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bad_tx.rehash() |
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bad_block.vtx.append(bad_tx) |
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assert_template(node, bad_block, 'bad-txns-inputs-missingorspent') |
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assert_submitblock(bad_block, 'bad-txns-inputs-missingorspent') |
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self.log.info("getblocktemplate: Test nonfinal transaction") |
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bad_block = copy.deepcopy(block) |
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bad_block.vtx[0].nLockTime = 2**32 - 1 |
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bad_block.vtx[0].rehash() |
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assert_template(node, bad_block, 'bad-txns-nonfinal') |
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assert_submitblock(bad_block, 'bad-txns-nonfinal') |
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self.log.info("getblocktemplate: Test bad tx count") |
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# The tx count is immediately after the block header |
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bad_block_sn = bytearray(block.serialize()) |
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assert_equal(bad_block_sn[BLOCK_HEADER_SIZE], 1) |
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bad_block_sn[BLOCK_HEADER_SIZE] += 1 |
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assert_raises_rpc_error(-22, "Block decode failed", node.getblocktemplate, { |
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'data': bad_block_sn.hex(), |
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'mode': 'proposal', |
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'rules': ['segwit'], |
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}) |
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self.log.info("getblocktemplate: Test bad bits") |
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bad_block = copy.deepcopy(block) |
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bad_block.nBits = 469762303 # impossible in the real world |
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assert_template(node, bad_block, 'bad-diffbits') |
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self.log.info("getblocktemplate: Test bad merkle root") |
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bad_block = copy.deepcopy(block) |
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bad_block.hashMerkleRoot += 1 |
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assert_template(node, bad_block, 'bad-txnmrklroot', False) |
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assert_submitblock(bad_block, 'bad-txnmrklroot', 'bad-txnmrklroot') |
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self.log.info("getblocktemplate: Test bad timestamps") |
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bad_block = copy.deepcopy(block) |
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bad_block.nTime = 2**31 - 1 |
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assert_template(node, bad_block, 'time-too-new') |
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assert_submitblock(bad_block, 'time-too-new', 'time-too-new') |
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bad_block.nTime = 0 |
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assert_template(node, bad_block, 'time-too-old') |
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assert_submitblock(bad_block, 'time-too-old', 'time-too-old') |
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self.log.info("getblocktemplate: Test not best block") |
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bad_block = copy.deepcopy(block) |
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bad_block.hashPrevBlock = 123 |
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assert_template(node, bad_block, 'inconclusive-not-best-prevblk') |
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assert_submitblock(bad_block, 'prev-blk-not-found', 'prev-blk-not-found') |
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self.log.info('submitheader tests') |
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assert_raises_rpc_error(-22, 'Block header decode failed', lambda: node.submitheader(hexdata='xx' * BLOCK_HEADER_SIZE)) |
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assert_raises_rpc_error(-22, 'Block header decode failed', lambda: node.submitheader(hexdata='ff' * (BLOCK_HEADER_SIZE-2))) |
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assert_raises_rpc_error(-25, 'Must submit previous header', lambda: node.submitheader(hexdata=super(CBlock, bad_block).serialize().hex())) |
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block.nTime += 1 |
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block.solve() |
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def chain_tip(b_hash, *, status='headers-only', branchlen=1): |
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return {'hash': b_hash, 'height': 202, 'branchlen': branchlen, 'status': status} |
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assert chain_tip(block.hash) not in node.getchaintips() |
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node.submitheader(hexdata=block.serialize().hex()) |
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assert chain_tip(block.hash) in node.getchaintips() |
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node.submitheader(hexdata=CBlockHeader(block).serialize().hex()) # Noop |
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assert chain_tip(block.hash) in node.getchaintips() |
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bad_block_root = copy.deepcopy(block) |
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bad_block_root.hashMerkleRoot += 2 |
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bad_block_root.solve() |
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assert chain_tip(bad_block_root.hash) not in node.getchaintips() |
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node.submitheader(hexdata=CBlockHeader(bad_block_root).serialize().hex()) |
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assert chain_tip(bad_block_root.hash) in node.getchaintips() |
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# Should still reject invalid blocks, even if we have the header: |
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assert_equal(node.submitblock(hexdata=bad_block_root.serialize().hex()), 'bad-txnmrklroot') |
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assert_equal(node.submitblock(hexdata=bad_block_root.serialize().hex()), 'bad-txnmrklroot') |
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assert chain_tip(bad_block_root.hash) in node.getchaintips() |
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# We know the header for this invalid block, so should just return early without error: |
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node.submitheader(hexdata=CBlockHeader(bad_block_root).serialize().hex()) |
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assert chain_tip(bad_block_root.hash) in node.getchaintips() |
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bad_block_lock = copy.deepcopy(block) |
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bad_block_lock.vtx[0].nLockTime = 2**32 - 1 |
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bad_block_lock.vtx[0].rehash() |
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bad_block_lock.hashMerkleRoot = bad_block_lock.calc_merkle_root() |
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bad_block_lock.solve() |
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assert_equal(node.submitblock(hexdata=bad_block_lock.serialize().hex()), 'bad-txns-nonfinal') |
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assert_equal(node.submitblock(hexdata=bad_block_lock.serialize().hex()), 'duplicate-invalid') |
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# Build a "good" block on top of the submitted bad block |
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bad_block2 = copy.deepcopy(block) |
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bad_block2.hashPrevBlock = bad_block_lock.sha256 |
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bad_block2.solve() |
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assert_raises_rpc_error(-25, 'bad-prevblk', lambda: node.submitheader(hexdata=CBlockHeader(bad_block2).serialize().hex())) |
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# Should reject invalid header right away |
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bad_block_time = copy.deepcopy(block) |
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bad_block_time.nTime = 1 |
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bad_block_time.solve() |
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assert_raises_rpc_error(-25, 'time-too-old', lambda: node.submitheader(hexdata=CBlockHeader(bad_block_time).serialize().hex())) |
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# Should ask for the block from a p2p node, if they announce the header as well: |
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peer = node.add_p2p_connection(P2PDataStore()) |
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peer.wait_for_getheaders(timeout=5) # Drop the first getheaders |
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peer.send_blocks_and_test(blocks=[block], node=node) |
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# Must be active now: |
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assert chain_tip(block.hash, status='active', branchlen=0) in node.getchaintips() |
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# Building a few blocks should give the same results |
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node.generatetoaddress(10, node.get_deterministic_priv_key().address) |
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assert_raises_rpc_error(-25, 'time-too-old', lambda: node.submitheader(hexdata=CBlockHeader(bad_block_time).serialize().hex())) |
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assert_raises_rpc_error(-25, 'bad-prevblk', lambda: node.submitheader(hexdata=CBlockHeader(bad_block2).serialize().hex())) |
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node.submitheader(hexdata=CBlockHeader(block).serialize().hex()) |
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node.submitheader(hexdata=CBlockHeader(bad_block_root).serialize().hex()) |
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assert_equal(node.submitblock(hexdata=block.serialize().hex()), 'duplicate') # valid |
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if __name__ == '__main__': |
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MiningTest().main()
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