Replace with security warning

On startup print to GUI and stdio a security warning and then exit.

1 files changed, 31 insertions, 2 deletions

diff --git a/electrum/electrum b/electrum/electrum
index dd35c35..8c5ef37 100755
--- a/electrum/electrum
+++ b/electrum/electrum
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 # -*- mode: python -*-
 #
 # Electrum - lightweight Bitcoin client
@@ -30,13 +30,42 @@ script_dir = os.path.dirname(os.path.realpath(__file__))
 is_bundle = getattr(sys, 'frozen', False)
 is_local = not is_bundle and os.path.exists(os.path.join(script_dir, "electrum.desktop"))
 is_android = 'ANDROID_DATA' in os.environ
-
+try:
+    import PyQt5
+except Exception:
+    sys.exit("Error: Could not import PyQt5 on Linux systems, you may try 'sudo apt-get install python3-pyqt5'")
+
+from PyQt5.QtGui import *
+from PyQt5.QtWidgets import *
+from PyQt5.QtCore import *
+import PyQt5.QtCore as QtCore
 # move this back to gui/kivy/__init.py once plugins are moved
 os.environ['KIVY_DATA_DIR'] = os.path.abspath(os.path.dirname(__file__)) + '/electrum/gui/kivy/data/'
 
 if is_local or is_android:
     sys.path.insert(0, os.path.join(script_dir, 'packages'))
 
+security_message = ''' \
+This version of Electrum is vulnerable to malicious code inserted by
+attackers and is being actively exploited to try and convince users to
+give their private credentials to attackers.  See
+https://bugs.debian.org/921688 for details.  Until the version in
+Debian is updated, please see https://electrum.org/download.html
+'''
+sys.stderr.write(security_message)
+
+
+from electrum.gui.qt.util import MessageBoxMixin
+class Window(QMainWindow, MessageBoxMixin):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.show_warning(msg = security_message, title = "THIS APPLICATION is INSECURE")
+
+        
+app = QApplication(["electrum", "gui"])
+window = Window()
+sys.exit(2)
 
 def check_imports():
     # pure-python dependencies need to be imported here for pyinstaller