be16f80abc
Any projects which want to use Hush code from now on will need to be licensed as GPLv3 or we will send the lawyers: https://www.softwarefreedom.org/ Notably, Komodo (KMD) is licensed as GPLv2 and is no longer compatible to receive code changes, without causing legal issues. MIT projects, such as Zcash, also cannot pull in changes from the Hush Full Node without permission from The Hush Developers, which may in some circumstances grant an MIT license on a case-by-case basis.
116 lines
4.0 KiB
Python
Executable File
116 lines
4.0 KiB
Python
Executable File
#!/usr/bin/env python2
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#
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# Distributed under the GPLv3/X11 software license, see the accompanying
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# file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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#
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from test_framework.test_framework import ComparisonTestFramework
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from test_framework.util import assert_equal
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from test_framework.comptool import TestManager, TestInstance
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from test_framework.mininode import NetworkThread
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from test_framework.blocktools import create_block, create_coinbase, create_transaction
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import copy
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import time
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'''
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In this test we connect to one node over p2p, and test block requests:
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1) Valid blocks should be requested and become chain tip.
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2) Invalid block with duplicated transaction should be re-requested.
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3) Invalid block with bad coinbase value should be rejected and not
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re-requested.
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'''
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# Use the ComparisonTestFramework with 1 node: only use --testbinary.
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class InvalidBlockRequestTest(ComparisonTestFramework):
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''' Can either run this test as 1 node with expected answers, or two and compare them.
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Change the "outcome" variable from each TestInstance object to only do the comparison. '''
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def __init__(self):
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self.num_nodes = 1
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def run_test(self):
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test = TestManager(self, self.options.tmpdir)
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test.add_all_connections(self.nodes)
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self.tip = None
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self.block_time = None
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NetworkThread().start() # Start up network handling in another thread
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test.run()
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def get_tests(self):
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if self.tip is None:
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self.tip = int ("0x" + self.nodes[0].getbestblockhash() + "L", 0)
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self.block_time = int(time.time())+1
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'''
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Create a new block with an anyone-can-spend coinbase
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'''
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block = create_block(self.tip, create_coinbase(), self.block_time)
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self.block_time += 1
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block.solve()
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# Save the coinbase for later
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self.block1 = block
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self.tip = block.sha256
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yield TestInstance([[block, True]])
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'''
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Now we need that block to mature so we can spend the coinbase.
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'''
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test = TestInstance(sync_every_block=False)
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for i in xrange(100):
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block = create_block(self.tip, create_coinbase(), self.block_time)
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block.solve()
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self.tip = block.sha256
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self.block_time += 1
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test.blocks_and_transactions.append([block, True])
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yield test
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'''
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Now we use merkle-root malleability to generate an invalid block with
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same blockheader.
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Manufacture a block with 3 transactions (coinbase, spend of prior
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coinbase, spend of that spend). Duplicate the 3rd transaction to
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leave merkle root and blockheader unchanged but invalidate the block.
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'''
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block2 = create_block(self.tip, create_coinbase(), self.block_time)
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self.block_time += 1
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# chr(81) is OP_TRUE
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tx1 = create_transaction(self.block1.vtx[0], 0, chr(81), 40*100000000)
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tx2 = create_transaction(tx1, 0, chr(81), 40*100000000)
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block2.vtx.extend([tx1, tx2])
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block2.hashMerkleRoot = block2.calc_merkle_root()
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block2.rehash()
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block2.solve()
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orig_hash = block2.sha256
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block2_orig = copy.deepcopy(block2)
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# Mutate block 2
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block2.vtx.append(tx2)
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assert_equal(block2.hashMerkleRoot, block2.calc_merkle_root())
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assert_equal(orig_hash, block2.rehash())
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assert(block2_orig.vtx != block2.vtx)
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self.tip = block2.sha256
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yield TestInstance([[block2, False], [block2_orig, True]])
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'''
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Make sure that a totally screwed up block is not valid.
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'''
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block3 = create_block(self.tip, create_coinbase(), self.block_time)
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self.block_time += 1
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block3.vtx[0].vout[0].nValue = 100*100000000 # Too high!
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block3.vtx[0].sha256=None
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block3.vtx[0].calc_sha256()
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block3.hashMerkleRoot = block3.calc_merkle_root()
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block3.rehash()
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block3.solve()
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yield TestInstance([[block3, False]])
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if __name__ == '__main__':
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InvalidBlockRequestTest().main()
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