psbt: follow-ups: fix trezor

electrum/plugins/hw_wallet/plugin.py

@@ -24,16 +24,16 @@
 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from typing import TYPE_CHECKING, Dict, List, Union, Tuple
+from typing import TYPE_CHECKING, Dict, List, Union, Tuple, Sequence
 
 from electrum.plugin import BasePlugin, hook
 from electrum.i18n import _
 from electrum.bitcoin import is_address, TYPE_SCRIPT, opcodes
 from electrum.util import bfh, versiontuple, UserFacingException
 from electrum.transaction import TxOutput, Transaction, PartialTransaction, PartialTxInput, PartialTxOutput
+from electrum.bip32 import BIP32Node
 
 if TYPE_CHECKING:
-    from electrum.bip32 import BIP32Node
     from electrum.wallet import Abstract_Wallet
     from electrum.keystore import Hardware_KeyStore
 
@@ -162,7 +162,11 @@ def get_xpubs_and_der_suffixes_from_txinout(tx: PartialTransaction,
     xfp_to_xpub_map = {xfp: bip32node for bip32node, (xfp, path)
                        in tx.xpubs.items()}  # type: Dict[bytes, BIP32Node]
     xfps = [txinout.bip32_paths[pubkey][0] for pubkey in txinout.pubkeys]
+    try:
         xpubs = [xfp_to_xpub_map[xfp] for xfp in xfps]
+    except KeyError as e:
+        raise Exception(f"Partial transaction is missing global xpub for "
+                        f"fingerprint ({str(e)}) in input/output") from e
     xpubs_and_deriv_suffixes = []
     for bip32node, pubkey in zip(xpubs, txinout.pubkeys):
         xfp, path = txinout.bip32_paths[pubkey]

electrum/plugins/keepkey/keepkey.py

@@ -351,15 +351,18 @@ class KeepKeyPlugin(HW_PluginBase):
                     assert isinstance(tx, PartialTransaction)
                     assert isinstance(txin, PartialTxInput)
                     assert keystore
+                    if len(txin.pubkeys) > 1:
                         xpubs_and_deriv_suffixes = get_xpubs_and_der_suffixes_from_txinout(tx, txin)
                         multisig = self._make_multisig(txin.num_sig, xpubs_and_deriv_suffixes)
+                    else:
+                        multisig = None
                     script_type = self.get_keepkey_input_script_type(txin.script_type)
                     txinputtype = self.types.TxInputType(
                         script_type=script_type,
                         multisig=multisig)
                     my_pubkey, full_path = keystore.find_my_pubkey_in_txinout(txin)
                     if full_path:
-                        txinputtype.address_n = full_path
+                        txinputtype.address_n.extend(full_path)
 
                 prev_hash = txin.prevout.txid
                 prev_index = txin.prevout.out_idx
@@ -387,12 +390,15 @@ class KeepKeyPlugin(HW_PluginBase):
             signatures=[b''] * len(pubkeys),
             m=m)
 
-    def tx_outputs(self, tx: PartialTransaction, *, keystore: 'KeepKey_KeyStore' = None):
+    def tx_outputs(self, tx: PartialTransaction, *, keystore: 'KeepKey_KeyStore'):
 
         def create_output_by_derivation():
             script_type = self.get_keepkey_output_script_type(txout.script_type)
+            if len(txout.pubkeys) > 1:
                 xpubs_and_deriv_suffixes = get_xpubs_and_der_suffixes_from_txinout(tx, txout)
                 multisig = self._make_multisig(txout.num_sig, xpubs_and_deriv_suffixes)
+            else:
+                multisig = None
             my_pubkey, full_path = keystore.find_my_pubkey_in_txinout(txout)
             assert full_path
             txoutputtype = self.types.TxOutputType(

electrum/plugins/safe_t/safe_t.py

@@ -347,15 +347,18 @@ class SafeTPlugin(HW_PluginBase):
                     assert isinstance(tx, PartialTransaction)
                     assert isinstance(txin, PartialTxInput)
                     assert keystore
+                    if len(txin.pubkeys) > 1:
                         xpubs_and_deriv_suffixes = get_xpubs_and_der_suffixes_from_txinout(tx, txin)
                         multisig = self._make_multisig(txin.num_sig, xpubs_and_deriv_suffixes)
+                    else:
+                        multisig = None
                     script_type = self.get_safet_input_script_type(txin.script_type)
                     txinputtype = self.types.TxInputType(
                         script_type=script_type,
                         multisig=multisig)
                     my_pubkey, full_path = keystore.find_my_pubkey_in_txinout(txin)
                     if full_path:
-                        txinputtype.address_n = full_path
+                        txinputtype._extend_address_n(full_path)
 
                 prev_hash = txin.prevout.txid
                 prev_index = txin.prevout.out_idx
@@ -383,12 +386,15 @@ class SafeTPlugin(HW_PluginBase):
             signatures=[b''] * len(pubkeys),
             m=m)
 
-    def tx_outputs(self, tx: PartialTransaction, *, keystore: 'SafeTKeyStore' = None):
+    def tx_outputs(self, tx: PartialTransaction, *, keystore: 'SafeTKeyStore'):
 
         def create_output_by_derivation():
             script_type = self.get_safet_output_script_type(txout.script_type)
+            if len(txout.pubkeys) > 1:
                 xpubs_and_deriv_suffixes = get_xpubs_and_der_suffixes_from_txinout(tx, txout)
                 multisig = self._make_multisig(txout.num_sig, xpubs_and_deriv_suffixes)
+            else:
+                multisig = None
             my_pubkey, full_path = keystore.find_my_pubkey_in_txinout(txout)
             assert full_path
             txoutputtype = self.types.TxOutputType(

electrum/plugins/trezor/trezor.py

@@ -365,8 +365,11 @@ class TrezorPlugin(HW_PluginBase):
                     assert isinstance(tx, PartialTransaction)
                     assert isinstance(txin, PartialTxInput)
                     assert keystore
+                    if len(txin.pubkeys) > 1:
                         xpubs_and_deriv_suffixes = get_xpubs_and_der_suffixes_from_txinout(tx, txin)
                         multisig = self._make_multisig(txin.num_sig, xpubs_and_deriv_suffixes)
+                    else:
+                        multisig = None
                     script_type = self.get_trezor_input_script_type(txin.script_type)
                     txinputtype = TxInputType(
                         script_type=script_type,
@@ -401,12 +404,15 @@ class TrezorPlugin(HW_PluginBase):
             signatures=[b''] * len(pubkeys),
             m=m)
 
-    def tx_outputs(self, tx: PartialTransaction, *, keystore: 'TrezorKeyStore' = None):
+    def tx_outputs(self, tx: PartialTransaction, *, keystore: 'TrezorKeyStore'):
 
         def create_output_by_derivation():
             script_type = self.get_trezor_output_script_type(txout.script_type)
+            if len(txout.pubkeys) > 1:
                 xpubs_and_deriv_suffixes = get_xpubs_and_der_suffixes_from_txinout(tx, txout)
                 multisig = self._make_multisig(txout.num_sig, xpubs_and_deriv_suffixes)
+            else:
+                multisig = None
             my_pubkey, full_path = keystore.find_my_pubkey_in_txinout(txout)
             assert full_path
             txoutputtype = TxOutputType(

electrum/transaction.py

@@ -1753,9 +1753,10 @@ class PartialTransaction(Transaction):
         if self.is_complete():
             return
         only_der_suffix = not include_xpubs_and_full_paths
-        # only include xpubs for multisig wallets; currently only they need it in practice,
-        # and also the coldcard fw have a limitation that if they are included then all
+        # only include xpubs for multisig wallets; currently only they need it in practice
+        # note: coldcard fw have a limitation that if they are included then all
         #       inputs are assumed to be multisig... https://github.com/spesmilo/electrum/pull/5440#issuecomment-549504761
+        # note: trezor plugin needs xpubs included, if there are multisig inputs/change_outputs
         from .wallet import Multisig_Wallet
         if include_xpubs_and_full_paths and isinstance(wallet, Multisig_Wallet):
             from .keystore import Xpub