116 lines
5.8 KiB
Python
Executable file
116 lines
5.8 KiB
Python
Executable file
#!/usr/bin/env python2
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# Copyright (c) 2015 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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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import *
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class DecodeScriptTest(BitcoinTestFramework):
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"""Tests decoding scripts via RPC command "decodescript"."""
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def setup_chain(self):
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print('Initializing test directory ' + self.options.tmpdir)
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initialize_chain_clean(self.options.tmpdir, 1)
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def setup_network(self, split=False):
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self.nodes = start_nodes(1, self.options.tmpdir)
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self.is_network_split = False
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def decodescript_script_sig(self):
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signature = '304502207fa7a6d1e0ee81132a269ad84e68d695483745cde8b541e3bf630749894e342a022100c1f7ab20e13e22fb95281a870f3dcf38d782e53023ee313d741ad0cfbc0c509001'
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push_signature = '48' + signature
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public_key = '03b0da749730dc9b4b1f4a14d6902877a92541f5368778853d9c4a0cb7802dcfb2'
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push_public_key = '21' + public_key
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# below are test cases for all of the standard transaction types
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# 1) P2PK scriptSig
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# the scriptSig of a public key scriptPubKey simply pushes a signature onto the stack
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rpc_result = self.nodes[0].decodescript(push_signature)
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assert_equal(signature, rpc_result['asm'])
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# 2) P2PKH scriptSig
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rpc_result = self.nodes[0].decodescript(push_signature + push_public_key)
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assert_equal(signature + ' ' + public_key, rpc_result['asm'])
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# 3) multisig scriptSig
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# this also tests the leading portion of a P2SH multisig scriptSig
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# OP_0 <A sig> <B sig>
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rpc_result = self.nodes[0].decodescript('00' + push_signature + push_signature)
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assert_equal('0 ' + signature + ' ' + signature, rpc_result['asm'])
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# 4) P2SH scriptSig
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# an empty P2SH redeemScript is valid and makes for a very simple test case.
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# thus, such a spending scriptSig would just need to pass the outer redeemScript
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# hash test and leave true on the top of the stack.
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rpc_result = self.nodes[0].decodescript('5100')
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assert_equal('1 0', rpc_result['asm'])
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# 5) null data scriptSig - no such thing because null data scripts can not be spent.
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# thus, no test case for that standard transaction type is here.
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def decodescript_script_pub_key(self):
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public_key = '03b0da749730dc9b4b1f4a14d6902877a92541f5368778853d9c4a0cb7802dcfb2'
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push_public_key = '21' + public_key
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public_key_hash = '11695b6cd891484c2d49ec5aa738ec2b2f897777'
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push_public_key_hash = '14' + public_key_hash
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# below are test cases for all of the standard transaction types
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# 1) P2PK scriptPubKey
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# <pubkey> OP_CHECKSIG
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rpc_result = self.nodes[0].decodescript(push_public_key + 'ac')
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assert_equal(public_key + ' OP_CHECKSIG', rpc_result['asm'])
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# 2) P2PKH scriptPubKey
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# OP_DUP OP_HASH160 <PubKeyHash> OP_EQUALVERIFY OP_CHECKSIG
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rpc_result = self.nodes[0].decodescript('76a9' + push_public_key_hash + '88ac')
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assert_equal('OP_DUP OP_HASH160 ' + public_key_hash + ' OP_EQUALVERIFY OP_CHECKSIG', rpc_result['asm'])
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# 3) multisig scriptPubKey
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# <m> <A pubkey> <B pubkey> <C pubkey> <n> OP_CHECKMULTISIG
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# just imagine that the pub keys used below are different.
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# for our purposes here it does not matter that they are the same even though it is unrealistic.
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rpc_result = self.nodes[0].decodescript('52' + push_public_key + push_public_key + push_public_key + '53ae')
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assert_equal('2 ' + public_key + ' ' + public_key + ' ' + public_key + ' 3 OP_CHECKMULTISIG', rpc_result['asm'])
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# 4) P2SH scriptPubKey
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# OP_HASH160 <Hash160(redeemScript)> OP_EQUAL.
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# push_public_key_hash here should actually be the hash of a redeem script.
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# but this works the same for purposes of this test.
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rpc_result = self.nodes[0].decodescript('a9' + push_public_key_hash + '87')
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assert_equal('OP_HASH160 ' + public_key_hash + ' OP_EQUAL', rpc_result['asm'])
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# 5) null data scriptPubKey
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# use a signature look-alike here to make sure that we do not decode random data as a signature.
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# this matters if/when signature sighash decoding comes along.
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# would want to make sure that no such decoding takes place in this case.
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signature_imposter = '48304502207fa7a6d1e0ee81132a269ad84e68d695483745cde8b541e3bf630749894e342a022100c1f7ab20e13e22fb95281a870f3dcf38d782e53023ee313d741ad0cfbc0c509001'
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# OP_RETURN <data>
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rpc_result = self.nodes[0].decodescript('6a' + signature_imposter)
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assert_equal('OP_RETURN ' + signature_imposter[2:], rpc_result['asm'])
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# 6) a CLTV redeem script. redeem scripts are in-effect scriptPubKey scripts, so adding a test here.
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# OP_NOP2 is also known as OP_CHECKLOCKTIMEVERIFY.
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# just imagine that the pub keys used below are different.
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# for our purposes here it does not matter that they are the same even though it is unrealistic.
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#
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# OP_IF
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# <receiver-pubkey> OP_CHECKSIGVERIFY
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# OP_ELSE
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# <lock-until> OP_NOP2 OP_DROP
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# OP_ENDIF
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# <sender-pubkey> OP_CHECKSIG
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#
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# lock until block 500,000
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rpc_result = self.nodes[0].decodescript('63' + push_public_key + 'ad670320a107b17568' + push_public_key + 'ac')
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assert_equal('OP_IF ' + public_key + ' OP_CHECKSIGVERIFY OP_ELSE 500000 OP_NOP2 OP_DROP OP_ENDIF ' + public_key + ' OP_CHECKSIG', rpc_result['asm'])
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def run_test(self):
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self.decodescript_script_sig()
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self.decodescript_script_pub_key()
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if __name__ == '__main__':
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DecodeScriptTest().main()
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