From 8a04a386f75d099f4b9864b0cdf7f26442b5801f Mon Sep 17 00:00:00 2001 From: Andrew Chow Date: Tue, 1 Mar 2022 09:09:10 -0500 Subject: [PATCH 1/2] tests: Calculate input weight more accurately The external input test with specifying input weight would make a pessimistic estimate of the input weight. However this would result in a test failure as it is sometimes too pessimistic when an ECDSA signature ends up being smaller than usual. To correct this, we can calculate the input weight more accurately. --- test/functional/rpc_psbt.py | 11 ++++++++--- test/functional/wallet_send.py | 11 ++++++++--- 2 files changed, 16 insertions(+), 6 deletions(-) diff --git a/test/functional/rpc_psbt.py b/test/functional/rpc_psbt.py index b037807b535..797da909730 100755 --- a/test/functional/rpc_psbt.py +++ b/test/functional/rpc_psbt.py @@ -10,6 +10,10 @@ from itertools import product from test_framework.descriptors import descsum_create from test_framework.key import ECKey +from test_framework.messages import ( + ser_compact_size, + WITNESS_SCALE_FACTOR, +) from test_framework.test_framework import BitcoinTestFramework from test_framework.util import ( assert_approx, @@ -655,10 +659,11 @@ class PSBTTest(BitcoinTestFramework): break psbt_in = dec["inputs"][input_idx] # Calculate the input weight - # (prevout + sequence + length of scriptSig + 2 bytes buffer) * 4 + len of scriptwitness + # (prevout + sequence + length of scriptSig + scriptsig + 1 byte buffer) * WITNESS_SCALE_FACTOR + num scriptWitness stack items + (length of stack item + stack item) * N stack items + 1 byte buffer len_scriptsig = len(psbt_in["final_scriptSig"]["hex"]) // 2 if "final_scriptSig" in psbt_in else 0 - len_scriptwitness = len(psbt_in["final_scriptwitness"]["hex"]) // 2 if "final_scriptwitness" in psbt_in else 0 - input_weight = ((41 + len_scriptsig + 2) * 4) + len_scriptwitness + len_scriptsig += len(ser_compact_size(len_scriptsig)) + 1 + len_scriptwitness = (sum([(len(x) // 2) + len(ser_compact_size(len(x) // 2)) for x in psbt_in["final_scriptwitness"]]) + len(psbt_in["final_scriptwitness"]) + 1) if "final_scriptwitness" in psbt_in else 0 + input_weight = ((40 + len_scriptsig) * WITNESS_SCALE_FACTOR) + len_scriptwitness low_input_weight = input_weight // 2 high_input_weight = input_weight * 2 diff --git a/test/functional/wallet_send.py b/test/functional/wallet_send.py index 86e36be8f76..13cc7bad77c 100755 --- a/test/functional/wallet_send.py +++ b/test/functional/wallet_send.py @@ -10,6 +10,10 @@ from itertools import product from test_framework.authproxy import JSONRPCException from test_framework.descriptors import descsum_create from test_framework.key import ECKey +from test_framework.messages import ( + ser_compact_size, + WITNESS_SCALE_FACTOR, +) from test_framework.test_framework import BitcoinTestFramework from test_framework.util import ( assert_equal, @@ -526,10 +530,11 @@ class WalletSendTest(BitcoinTestFramework): break psbt_in = dec["inputs"][input_idx] # Calculate the input weight - # (prevout + sequence + length of scriptSig + 2 bytes buffer) * 4 + len of scriptwitness + # (prevout + sequence + length of scriptSig + scriptsig + 1 byte buffer) * WITNESS_SCALE_FACTOR + num scriptWitness stack items + (length of stack item + stack item) * N stack items + 1 byte buffer len_scriptsig = len(psbt_in["final_scriptSig"]["hex"]) // 2 if "final_scriptSig" in psbt_in else 0 - len_scriptwitness = len(psbt_in["final_scriptwitness"]["hex"]) // 2 if "final_scriptwitness" in psbt_in else 0 - input_weight = ((41 + len_scriptsig + 2) * 4) + len_scriptwitness + len_scriptsig += len(ser_compact_size(len_scriptsig)) + 1 + len_scriptwitness = (sum([(len(x) // 2) + len(ser_compact_size(len(x) // 2)) for x in psbt_in["final_scriptwitness"]]) + len(psbt_in["final_scriptwitness"]) + 1) if "final_scriptwitness" in psbt_in else 0 + input_weight = ((40 + len_scriptsig) * WITNESS_SCALE_FACTOR) + len_scriptwitness # Input weight error conditions assert_raises_rpc_error( From 9f5ab670e7c8165f161ec44dbd95778c5515ece0 Mon Sep 17 00:00:00 2001 From: Andrew Chow Date: Thu, 24 Mar 2022 11:50:02 -0400 Subject: [PATCH 2/2] tests: Use descriptor that requires both legacy and segwit --- test/functional/rpc_psbt.py | 6 +++--- test/functional/wallet_send.py | 6 +++--- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/test/functional/rpc_psbt.py b/test/functional/rpc_psbt.py index 797da909730..444e56610e6 100755 --- a/test/functional/rpc_psbt.py +++ b/test/functional/rpc_psbt.py @@ -619,8 +619,8 @@ class PSBTTest(BitcoinTestFramework): self.nodes[1].createwallet("extfund") wallet = self.nodes[1].get_wallet_rpc("extfund") - # Make a weird but signable script. sh(pkh()) descriptor accomplishes this - desc = descsum_create("sh(pkh({}))".format(privkey)) + # Make a weird but signable script. sh(wsh(pkh())) descriptor accomplishes this + desc = descsum_create("sh(wsh(pkh({})))".format(privkey)) if self.options.descriptors: res = self.nodes[0].importdescriptors([{"desc": desc, "timestamp": "now"}]) else: @@ -638,7 +638,7 @@ class PSBTTest(BitcoinTestFramework): assert_raises_rpc_error(-4, "Insufficient funds", wallet.walletcreatefundedpsbt, [ext_utxo], {self.nodes[0].getnewaddress(): 15}) # But funding should work when the solving data is provided - psbt = wallet.walletcreatefundedpsbt([ext_utxo], {self.nodes[0].getnewaddress(): 15}, 0, {"add_inputs": True, "solving_data": {"pubkeys": [addr_info['pubkey']], "scripts": [addr_info["embedded"]["scriptPubKey"]]}}) + psbt = wallet.walletcreatefundedpsbt([ext_utxo], {self.nodes[0].getnewaddress(): 15}, 0, {"add_inputs": True, "solving_data": {"pubkeys": [addr_info['pubkey']], "scripts": [addr_info["embedded"]["scriptPubKey"], addr_info["embedded"]["embedded"]["scriptPubKey"]]}}) signed = wallet.walletprocesspsbt(psbt['psbt']) assert not signed['complete'] signed = self.nodes[0].walletprocesspsbt(signed['psbt']) diff --git a/test/functional/wallet_send.py b/test/functional/wallet_send.py index 13cc7bad77c..07baa0595e6 100755 --- a/test/functional/wallet_send.py +++ b/test/functional/wallet_send.py @@ -492,8 +492,8 @@ class WalletSendTest(BitcoinTestFramework): self.nodes[1].createwallet("extfund") ext_fund = self.nodes[1].get_wallet_rpc("extfund") - # Make a weird but signable script. sh(pkh()) descriptor accomplishes this - desc = descsum_create("sh(pkh({}))".format(privkey)) + # Make a weird but signable script. sh(wsh(pkh())) descriptor accomplishes this + desc = descsum_create("sh(wsh(pkh({})))".format(privkey)) if self.options.descriptors: res = ext_fund.importdescriptors([{"desc": desc, "timestamp": "now"}]) else: @@ -511,7 +511,7 @@ class WalletSendTest(BitcoinTestFramework): self.test_send(from_wallet=ext_wallet, to_wallet=self.nodes[0], amount=15, inputs=[ext_utxo], add_inputs=True, psbt=True, include_watching=True, expect_error=(-4, "Insufficient funds")) # But funding should work when the solving data is provided - res = self.test_send(from_wallet=ext_wallet, to_wallet=self.nodes[0], amount=15, inputs=[ext_utxo], add_inputs=True, psbt=True, include_watching=True, solving_data={"pubkeys": [addr_info['pubkey']], "scripts": [addr_info["embedded"]["scriptPubKey"]]}) + res = self.test_send(from_wallet=ext_wallet, to_wallet=self.nodes[0], amount=15, inputs=[ext_utxo], add_inputs=True, psbt=True, include_watching=True, solving_data={"pubkeys": [addr_info['pubkey']], "scripts": [addr_info["embedded"]["scriptPubKey"], addr_info["embedded"]["embedded"]["scriptPubKey"]]}) signed = ext_wallet.walletprocesspsbt(res["psbt"]) signed = ext_fund.walletprocesspsbt(res["psbt"]) assert signed["complete"]