Merge pull request #3867 from SomberNight/check_trezor_version

check trezorlib version

lib/util.py

@@ -734,4 +734,8 @@ def setup_thread_excepthook():
 
         self.run = run_with_except_hook
 
-    threading.Thread.__init__ = init
+    threading.Thread.__init__ = init
+
+
+def versiontuple(v):
+    return tuple(map(int, (v.split("."))))

plugins/hw_wallet/qt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 # -*- mode: python -*-
 #
 # Electrum - lightweight Bitcoin client
@@ -184,10 +184,12 @@ class QtPluginBase(object):
             if not isinstance(keystore, self.keystore_class):
                 continue
             if not self.libraries_available:
-                window.show_error(
-                    _("Cannot find python library for") + " '%s'.\n" % self.name \
-                    + _("Make sure you install it with python3")
-                )
+                if hasattr(self, 'libraries_available_message'):
+                    message = self.libraries_available_message + '\n'
+                else:
+                    message = _("Cannot find python library for") + " '%s'.\n" % self.name
+                message += _("Make sure you install it with python3")
+                window.show_error(message)
                 return
             tooltip = self.device + '\n' + (keystore.label or 'unnamed')
             cb = partial(self.show_settings_dialog, window, keystore)

plugins/ledger/ledger.py

@@ -10,7 +10,7 @@ from electrum.plugins import BasePlugin
 from electrum.keystore import Hardware_KeyStore
 from electrum.transaction import Transaction
 from ..hw_wallet import HW_PluginBase
-from electrum.util import print_error, is_verbose, bfh, bh2u
+from electrum.util import print_error, is_verbose, bfh, bh2u, versiontuple
 
 try:
     import hid
@@ -57,9 +57,6 @@ class Ledger_Client():
     def i4b(self, x):
         return pack('>I', x)
 
-    def versiontuple(self, v):
-        return tuple(map(int, (v.split("."))))
-
     def test_pin_unlocked(func):
         """Function decorator to test the Ledger for being unlocked, and if not,
         raise a human-readable exception.
@@ -140,9 +137,9 @@ class Ledger_Client():
         try:
             firmwareInfo = self.dongleObject.getFirmwareVersion()
             firmware = firmwareInfo['version']
-            self.multiOutputSupported = self.versiontuple(firmware) >= self.versiontuple(MULTI_OUTPUT_SUPPORT)
-            self.nativeSegwitSupported = self.versiontuple(firmware) >= self.versiontuple(SEGWIT_SUPPORT)
-            self.segwitSupported = self.nativeSegwitSupported or (firmwareInfo['specialVersion'] == 0x20 and self.versiontuple(firmware) >= self.versiontuple(SEGWIT_SUPPORT_SPECIAL))
+            self.multiOutputSupported = versiontuple(firmware) >= versiontuple(MULTI_OUTPUT_SUPPORT)
+            self.nativeSegwitSupported = versiontuple(firmware) >= versiontuple(SEGWIT_SUPPORT)
+            self.segwitSupported = self.nativeSegwitSupported or (firmwareInfo['specialVersion'] == 0x20 and versiontuple(firmware) >= versiontuple(SEGWIT_SUPPORT_SPECIAL))
 
             if not checkFirmware(firmwareInfo):
                 self.dongleObject.dongle.close()

plugins/trezor/trezor.py

@@ -2,7 +2,7 @@ import threading
 
 from binascii import hexlify, unhexlify
 
-from electrum.util import bfh, bh2u
+from electrum.util import bfh, bh2u, versiontuple
 from electrum.bitcoin import (b58_address_to_hash160, xpub_from_pubkey,
                               TYPE_ADDRESS, TYPE_SCRIPT, NetworkConstants)
 from electrum.i18n import _
@@ -86,6 +86,7 @@ class TrezorPlugin(HW_PluginBase):
     libraries_URL = 'https://github.com/trezor/python-trezor'
     minimum_firmware = (1, 5, 2)
     keystore_class = TrezorKeyStore
+    minimum_library = (0, 9, 0)
 
     MAX_LABEL_LEN = 32
 
@@ -96,6 +97,19 @@ class TrezorPlugin(HW_PluginBase):
         try:
             # Minimal test if python-trezor is installed
             import trezorlib
+            try:
+                library_version = trezorlib.__version__
+            except AttributeError:
+                # python-trezor only introduced __version__ in 0.9.0
+                library_version = 'unknown'
+            if library_version == 'unknown' or \
+                    versiontuple(library_version) < self.minimum_library:
+                self.libraries_available_message = (
+                        _("Library version for '{}' is too old.").format(name)
+                        + '\nInstalled: {}, Needed: {}'
+                        .format(library_version, self.minimum_library))
+                self.print_stderr(self.libraries_available_message)
+                raise ImportError()
             self.libraries_available = True
         except ImportError:
             self.libraries_available = False