test: use script_util helpers for creating P2SH scripts

Author: theStack

test/functional/data/invalid_txs.py

@@ -29,27 +29,32 @@
     CTxOut,
     MAX_MONEY,
 )
-from test_framework import script as sc
 from test_framework.blocktools import create_tx_with_script, MAX_BLOCK_SIGOPS
 from test_framework.script import (
     CScript,
+    OP_0,
+    OP_2DIV,
+    OP_2MUL,
+    OP_AND,
     OP_CAT,
-    OP_SUBSTR,
-    OP_LEFT,
-    OP_RIGHT,
+    OP_CHECKSIG,
+    OP_DIV,
     OP_INVERT,
-    OP_AND,
+    OP_LEFT,
+    OP_LSHIFT,
+    OP_MOD,
+    OP_MUL,
     OP_OR,
+    OP_RIGHT,
+    OP_RSHIFT,
+    OP_SUBSTR,
+    OP_TRUE,
     OP_XOR,
-    OP_2MUL,
-    OP_2DIV,
-    OP_MUL,
-    OP_DIV,
-    OP_MOD,
-    OP_LSHIFT,
-    OP_RSHIFT
 )
-basic_p2sh = sc.CScript([sc.OP_HASH160, sc.hash160(sc.CScript([sc.OP_0])), sc.OP_EQUAL])
+from test_framework.script_util import (
+    script_to_p2sh_script,
+)
+basic_p2sh = script_to_p2sh_script(CScript([OP_0]))
 
 
 class BadTxTemplate:
@@ -116,7 +121,7 @@ class SizeTooSmall(BadTxTemplate):
     def get_tx(self):
         tx = CTransaction()
         tx.vin.append(self.valid_txin)
-        tx.vout.append(CTxOut(0, sc.CScript([sc.OP_TRUE])))
+        tx.vout.append(CTxOut(0, CScript([OP_TRUE])))
         tx.calc_sha256()
         return tx
 
@@ -217,7 +222,7 @@ class TooManySigops(BadTxTemplate):
     expect_disconnect = False
 
     def get_tx(self):
-        lotsa_checksigs = sc.CScript([sc.OP_CHECKSIG] * (MAX_BLOCK_SIGOPS))
+        lotsa_checksigs = CScript([OP_CHECKSIG] * (MAX_BLOCK_SIGOPS))
         return create_tx_with_script(
             self.spend_tx, 0,
             script_pub_key=lotsa_checksigs,

test/functional/feature_block.py

@@ -37,17 +37,17 @@
     OP_CHECKSIGVERIFY,
     OP_ELSE,
     OP_ENDIF,
-    OP_EQUAL,
     OP_DROP,
     OP_FALSE,
-    OP_HASH160,
     OP_IF,
     OP_INVALIDOPCODE,
     OP_RETURN,
     OP_TRUE,
     SIGHASH_ALL,
     LegacySignatureHash,
-    hash160,
+)
+from test_framework.script_util import (
+    script_to_p2sh_script,
 )
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal
@@ -469,8 +469,7 @@ def run_test(self):
 
         # Build the redeem script, hash it, use hash to create the p2sh script
         redeem_script = CScript([self.coinbase_pubkey] + [OP_2DUP, OP_CHECKSIGVERIFY] * 5 + [OP_CHECKSIG])
-        redeem_script_hash = hash160(redeem_script)
-        p2sh_script = CScript([OP_HASH160, redeem_script_hash, OP_EQUAL])
+        p2sh_script = script_to_p2sh_script(redeem_script)
 
         # Create a transaction that spends one satoshi to the p2sh_script, the rest to OP_TRUE
         # This must be signed because it is spending a coinbase

test/functional/feature_fee_estimation.py

@@ -18,10 +18,10 @@
     OP_1,
     OP_2,
     OP_DROP,
-    OP_EQUAL,
-    OP_HASH160,
     OP_TRUE,
-    hash160,
+)
+from test_framework.script_util import (
+    script_to_p2sh_script,
 )
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
@@ -37,8 +37,8 @@
 # time signing.
 REDEEM_SCRIPT_1 = CScript([OP_1, OP_DROP])
 REDEEM_SCRIPT_2 = CScript([OP_2, OP_DROP])
-P2SH_1 = CScript([OP_HASH160, hash160(REDEEM_SCRIPT_1), OP_EQUAL])
-P2SH_2 = CScript([OP_HASH160, hash160(REDEEM_SCRIPT_2), OP_EQUAL])
+P2SH_1 = script_to_p2sh_script(REDEEM_SCRIPT_1)
+P2SH_2 = script_to_p2sh_script(REDEEM_SCRIPT_2)
 
 # Associated ScriptSig's to spend satisfy P2SH_1 and P2SH_2
 SCRIPT_SIG = [CScript([OP_TRUE, REDEEM_SCRIPT_1]), CScript([OP_TRUE, REDEEM_SCRIPT_2])]

test/functional/feature_segwit.py

@@ -34,13 +34,12 @@
     OP_CHECKMULTISIG,
     OP_CHECKSIG,
     OP_DROP,
-    OP_EQUAL,
-    OP_HASH160,
     OP_TRUE,
     hash160,
 )
 from test_framework.script_util import (
     key_to_p2pkh_script,
+    script_to_p2sh_script,
 )
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
@@ -354,7 +353,7 @@ def run_test(self):
 
         multisig_without_privkey_address = self.nodes[0].addmultisigaddress(2, [pubkeys[3], pubkeys[4]])['address']
         script = CScript([OP_2, hex_str_to_bytes(pubkeys[3]), hex_str_to_bytes(pubkeys[4]), OP_2, OP_CHECKMULTISIG])
-        solvable_after_importaddress.append(CScript([OP_HASH160, hash160(script), OP_EQUAL]))
+        solvable_after_importaddress.append(script_to_p2sh_script(script))
 
         for i in compressed_spendable_address:
             v = self.nodes[0].getaddressinfo(i)
@@ -430,7 +429,7 @@ def run_test(self):
         unsolvable_address_key = hex_str_to_bytes("02341AEC7587A51CDE5279E0630A531AEA2615A9F80B17E8D9376327BAEAA59E3D")
         unsolvablep2pkh = key_to_p2pkh_script(unsolvable_address_key)
         unsolvablep2wshp2pkh = CScript([OP_0, sha256(unsolvablep2pkh)])
-        p2shop0 = CScript([OP_HASH160, hash160(op0), OP_EQUAL])
+        p2shop0 = script_to_p2sh_script(op0)
         p2wshop1 = CScript([OP_0, sha256(op1)])
         unsolvable_after_importaddress.append(unsolvablep2pkh)
         unsolvable_after_importaddress.append(unsolvablep2wshp2pkh)
@@ -616,21 +615,21 @@ def p2sh_address_to_script(self, v):
         bare = CScript(hex_str_to_bytes(v['hex']))
         p2sh = CScript(hex_str_to_bytes(v['scriptPubKey']))
         p2wsh = CScript([OP_0, sha256(bare)])
-        p2sh_p2wsh = CScript([OP_HASH160, hash160(p2wsh), OP_EQUAL])
+        p2sh_p2wsh = script_to_p2sh_script(p2wsh)
         return([bare, p2sh, p2wsh, p2sh_p2wsh])
 
     def p2pkh_address_to_script(self, v):
         pubkey = hex_str_to_bytes(v['pubkey'])
         p2wpkh = CScript([OP_0, hash160(pubkey)])
-        p2sh_p2wpkh = CScript([OP_HASH160, hash160(p2wpkh), OP_EQUAL])
+        p2sh_p2wpkh = script_to_p2sh_script(p2wpkh)
         p2pk = CScript([pubkey, OP_CHECKSIG])
         p2pkh = CScript(hex_str_to_bytes(v['scriptPubKey']))
-        p2sh_p2pk = CScript([OP_HASH160, hash160(p2pk), OP_EQUAL])
-        p2sh_p2pkh = CScript([OP_HASH160, hash160(p2pkh), OP_EQUAL])
+        p2sh_p2pk = script_to_p2sh_script(p2pk)
+        p2sh_p2pkh = script_to_p2sh_script(p2pkh)
         p2wsh_p2pk = CScript([OP_0, sha256(p2pk)])
         p2wsh_p2pkh = CScript([OP_0, sha256(p2pkh)])
-        p2sh_p2wsh_p2pk = CScript([OP_HASH160, hash160(p2wsh_p2pk), OP_EQUAL])
-        p2sh_p2wsh_p2pkh = CScript([OP_HASH160, hash160(p2wsh_p2pkh), OP_EQUAL])
+        p2sh_p2wsh_p2pk = script_to_p2sh_script(p2wsh_p2pk)
+        p2sh_p2wsh_p2pkh = script_to_p2sh_script(p2wsh_p2pkh)
         return [p2wpkh, p2sh_p2wpkh, p2pk, p2pkh, p2sh_p2pk, p2sh_p2pkh, p2wsh_p2pk, p2wsh_p2pkh, p2sh_p2wsh_p2pk, p2sh_p2wsh_p2pkh]
 
     def create_and_mine_tx_from_txids(self, txids, success=True):

test/functional/feature_taproot.py

@@ -57,7 +57,6 @@
     OP_ENDIF,
     OP_EQUAL,
     OP_EQUALVERIFY,
-    OP_HASH160,
     OP_IF,
     OP_NOP,
     OP_NOT,
@@ -78,6 +77,7 @@
 )
 from test_framework.script_util import (
     keyhash_to_p2pkh_script,
+    script_to_p2sh_script,
 )
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_raises_rpc_error, assert_equal
@@ -499,7 +499,7 @@ def make_spender(comment, *, tap=None, witv0=False, script=None, pkh=None, p2sh=
     if p2sh:
         # P2SH wrapper can be combined with anything else
         conf["script_p2sh"] = spk
-        spk = CScript([OP_HASH160, hash160(spk), OP_EQUAL])
+        spk = script_to_p2sh_script(spk)
 
     conf = {**conf, **kwargs}
 

test/functional/mempool_accept.py

@@ -19,16 +19,17 @@
     tx_from_hex,
 )
 from test_framework.script import (
-    hash160,
     CScript,
     OP_0,
     OP_2,
     OP_3,
     OP_CHECKMULTISIG,
-    OP_EQUAL,
     OP_HASH160,
     OP_RETURN,
 )
+from test_framework.script_util import (
+    script_to_p2sh_script,
+)
 from test_framework.util import (
     assert_equal,
     assert_raises_rpc_error,
@@ -291,7 +292,7 @@ def run_test(self):
             rawtxs=[tx.serialize().hex()],
         )
         tx = tx_from_hex(raw_tx_reference)
-        output_p2sh_burn = CTxOut(nValue=540, scriptPubKey=CScript([OP_HASH160, hash160(b'burn'), OP_EQUAL]))
+        output_p2sh_burn = CTxOut(nValue=540, scriptPubKey=script_to_p2sh_script(b'burn'))
         num_scripts = 100000 // len(output_p2sh_burn.serialize())  # Use enough outputs to make the tx too large for our policy
         tx.vout = [output_p2sh_burn] * num_scripts
         self.check_mempool_result(

test/functional/p2p_segwit.py

@@ -62,8 +62,6 @@
     OP_DROP,
     OP_ELSE,
     OP_ENDIF,
-    OP_EQUAL,
-    OP_HASH160,
     OP_IF,
     OP_RETURN,
     OP_TRUE,
@@ -77,6 +75,7 @@
 )
 from test_framework.script_util import (
     keyhash_to_p2pkh_script,
+    script_to_p2sh_script,
 )
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
@@ -491,9 +490,7 @@ def test_v0_outputs_arent_spendable(self):
         witness_program = CScript([OP_TRUE])
         witness_hash = sha256(witness_program)
         script_pubkey = CScript([OP_0, witness_hash])
-
-        p2sh_pubkey = hash160(script_pubkey)
-        p2sh_script_pubkey = CScript([OP_HASH160, p2sh_pubkey, OP_EQUAL])
+        p2sh_script_pubkey = script_to_p2sh_script(script_pubkey)
 
         value = self.utxo[0].nValue // 3
 
@@ -630,9 +627,7 @@ def test_standardness_v0(self):
         witness_program = CScript([OP_TRUE])
         witness_hash = sha256(witness_program)
         script_pubkey = CScript([OP_0, witness_hash])
-
-        p2sh_pubkey = hash160(witness_program)
-        p2sh_script_pubkey = CScript([OP_HASH160, p2sh_pubkey, OP_EQUAL])
+        p2sh_script_pubkey = script_to_p2sh_script(witness_program)
 
         # First prepare a p2sh output (so that spending it will pass standardness)
         p2sh_tx = CTransaction()
@@ -739,8 +734,7 @@ def test_p2sh_witness(self):
         witness_program = CScript([OP_DROP, OP_TRUE])
         witness_hash = sha256(witness_program)
         p2wsh_pubkey = CScript([OP_0, witness_hash])
-        p2sh_witness_hash = hash160(p2wsh_pubkey)
-        script_pubkey = CScript([OP_HASH160, p2sh_witness_hash, OP_EQUAL])
+        script_pubkey = script_to_p2sh_script(p2wsh_pubkey)
         script_sig = CScript([p2wsh_pubkey])  # a push of the redeem script
 
         # Fund the P2SH output
@@ -1328,9 +1322,8 @@ def test_tx_relay_after_segwit_activation(self):
 
         # Add too-large for IsStandard witness and check that it does not enter reject filter
         p2sh_program = CScript([OP_TRUE])
-        p2sh_pubkey = hash160(p2sh_program)
         witness_program2 = CScript([b'a' * 400000])
-        tx3.vout.append(CTxOut(tx2.vout[0].nValue - 1000, CScript([OP_HASH160, p2sh_pubkey, OP_EQUAL])))
+        tx3.vout.append(CTxOut(tx2.vout[0].nValue - 1000, script_to_p2sh_script(p2sh_program)))
         tx3.wit.vtxinwit[0].scriptWitness.stack = [witness_program2]
         tx3.rehash()
 
@@ -1564,8 +1557,7 @@ def test_uncompressed_pubkey(self):
         # Test 2: P2WSH
         # Try to spend the P2WSH output created in last test.
         # Send it to a P2SH(P2WSH) output, which we'll use in the next test.
-        p2sh_witness_hash = hash160(script_wsh)
-        script_p2sh = CScript([OP_HASH160, p2sh_witness_hash, OP_EQUAL])
+        script_p2sh = script_to_p2sh_script(script_wsh)
         script_sig = CScript([script_wsh])
 
         tx3 = CTransaction()
@@ -1803,8 +1795,7 @@ def test_non_standard_witness_blinding(self):
         # rules (an anyone-can-spend OP_TRUE would be rejected, if not wrapped
         # in P2SH).
         p2sh_program = CScript([OP_TRUE])
-        p2sh_pubkey = hash160(p2sh_program)
-        script_pubkey = CScript([OP_HASH160, p2sh_pubkey, OP_EQUAL])
+        script_pubkey = script_to_p2sh_script(p2sh_program)
 
         # Now check that unnecessary witnesses can't be used to blind a node
         # to a transaction, eg by violating standardness checks.
@@ -1870,10 +1861,9 @@ def test_non_standard_witness(self):
         outputvalue = (self.utxo[0].nValue - 1000) // (len(scripts) * 2)
         for i in scripts:
             p2wsh = CScript([OP_0, sha256(i)])
-            p2sh = hash160(p2wsh)
             p2wsh_scripts.append(p2wsh)
             tx.vout.append(CTxOut(outputvalue, p2wsh))
-            tx.vout.append(CTxOut(outputvalue, CScript([OP_HASH160, p2sh, OP_EQUAL])))
+            tx.vout.append(CTxOut(outputvalue, script_to_p2sh_script(p2wsh)))
         tx.rehash()
         txid = tx.sha256
         test_transaction_acceptance(self.nodes[0], self.test_node, tx, with_witness=False, accepted=True)

test/functional/test_framework/wallet_util.py

@@ -21,13 +21,12 @@
     OP_2,
     OP_3,
     OP_CHECKMULTISIG,
-    OP_EQUAL,
-    OP_HASH160,
     hash160,
     sha256,
 )
 from test_framework.script_util import (
     key_to_p2pkh_script,
+    script_to_p2sh_script,
 )
 from test_framework.util import hex_str_to_bytes
 
@@ -64,7 +63,7 @@ def get_key(node):
                p2pkh_addr=key_to_p2pkh(pubkey),
                p2wpkh_script=CScript([OP_0, pkh]).hex(),
                p2wpkh_addr=key_to_p2wpkh(pubkey),
-               p2sh_p2wpkh_script=CScript([OP_HASH160, hash160(CScript([OP_0, pkh])), OP_EQUAL]).hex(),
+               p2sh_p2wpkh_script=script_to_p2sh_script(CScript([OP_0, pkh])).hex(),
                p2sh_p2wpkh_redeem_script=CScript([OP_0, pkh]).hex(),
                p2sh_p2wpkh_addr=key_to_p2sh_p2wpkh(pubkey))
 
@@ -83,7 +82,7 @@ def get_generate_key():
                p2pkh_addr=key_to_p2pkh(pubkey),
                p2wpkh_script=CScript([OP_0, pkh]).hex(),
                p2wpkh_addr=key_to_p2wpkh(pubkey),
-               p2sh_p2wpkh_script=CScript([OP_HASH160, hash160(CScript([OP_0, pkh])), OP_EQUAL]).hex(),
+               p2sh_p2wpkh_script=script_to_p2sh_script(CScript([OP_0, pkh])).hex(),
                p2sh_p2wpkh_redeem_script=CScript([OP_0, pkh]).hex(),
                p2sh_p2wpkh_addr=key_to_p2sh_p2wpkh(pubkey))
 
@@ -101,12 +100,12 @@ def get_multisig(node):
     witness_script = CScript([OP_0, sha256(script_code)])
     return Multisig(privkeys=[node.dumpprivkey(addr) for addr in addrs],
                     pubkeys=pubkeys,
-                    p2sh_script=CScript([OP_HASH160, hash160(script_code), OP_EQUAL]).hex(),
+                    p2sh_script=script_to_p2sh_script(script_code).hex(),
                     p2sh_addr=script_to_p2sh(script_code),
                     redeem_script=script_code.hex(),
                     p2wsh_script=witness_script.hex(),
                     p2wsh_addr=script_to_p2wsh(script_code),
-                    p2sh_p2wsh_script=CScript([OP_HASH160, hash160(witness_script), OP_EQUAL]).hex(),
+                    p2sh_p2wsh_script=script_to_p2sh_script(witness_script).hex(),
                     p2sh_p2wsh_addr=script_to_p2sh_p2wsh(script_code))
 
 def test_address(node, address, **kwargs):