1 files changed, 120 insertions, 0 deletions
diff --git a/src/leap/bitmask/cli/command.py b/src/leap/bitmask/cli/command.py
new file mode 100644
index 0000000..36552c0
--- /dev/null
+++ b/src/leap/bitmask/cli/command.py
@@ -0,0 +1,120 @@
+# -*- coding: utf-8 -*-
+# sender
+# Copyright (C) 2016 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Bitmask Command Line interface: zmq sender.
+"""
+import argparse
+import json
+import sys
+
+from colorama import init as color_init
+from colorama import Fore
+from twisted.internet import defer
+from txzmq import ZmqEndpoint, ZmqEndpointType
+from txzmq import ZmqFactory, ZmqREQConnection
+from txzmq import ZmqRequestTimeoutError
+
+from leap.bitmask.core import ENDPOINT
+
+
+appname = 'bitmaskctl'
+
+
+def _print_result(result):
+    print Fore.GREEN + '%s' % result + Fore.RESET
+
+
+def default_dict_printer(result):
+    for key, value in result.items():
+        if value is None:
+            value = str(value)
+        print(Fore.RESET + key.ljust(10) + Fore.GREEN + value + Fore.RESET)
+
+
+class Command(object):
+    """A generic command dispatcher.
+    Any command in the class attribute `commands` will be dispached and
+    represented with a generic printer."""
+    service = ''
+    usage = '''{name} <subcommand>'''.format(name=appname)
+    epilog = ("Use bitmaskctl <subcommand> --help' to learn more "
+              "about each command.")
+    commands = []
+
+    def __init__(self):
+        color_init()
+        zf = ZmqFactory()
+        e = ZmqEndpoint(ZmqEndpointType.connect, ENDPOINT)
+        self._conn = ZmqREQConnection(zf, e)
+
+        self.data = []
+        if self.service:
+            self.data = [self.service]
+
+    def execute(self, raw_args):
+        self.parser = argparse.ArgumentParser(usage=self.usage,
+                                              epilog=self.epilog)
+        self.parser.add_argument('command', help='Subcommand to run')
+        try:
+            args = self.parser.parse_args(raw_args[0:1])
+        except SystemExit:
+            return defer.succeed(None)
+
+        # if command is in the default list, send the bare command
+        # and use the default printer
+        if args.command in self.commands:
+            self.data += [args.command]
+            return self._send(printer=default_dict_printer)
+
+        elif (args.command == 'execute' or
+                args.command.startswith('_') or
+                not hasattr(self, args.command)):
+            print 'Unrecognized command'
+            return self.help([])
+
+        try:
+            # use dispatch pattern to invoke method with same name
+            return getattr(self, args.command)(raw_args[1:])
+        except SystemExit:
+            return defer.succeed(None)
+
+    def help(self, raw_args):
+        self.parser.print_help()
+        return defer.succeed(None)
+
+    def _send(self, printer=_print_result):
+        d = self._conn.sendMsg(*self.data, timeout=60)
+        d.addCallback(self._check_err, printer)
+        d.addErrback(self._timeout_handler)
+        return d
+
+    def _error(self, msg):
+        print Fore.RED + "[!] %s" % msg + Fore.RESET
+        sys.exit(1)
+
+    def _check_err(self, stuff, printer):
+        obj = json.loads(stuff[0])
+        if not obj['error']:
+            return printer(obj['result'])
+        else:
+            print Fore.RED + 'ERROR:' + '%s' % obj['error'] + Fore.RESET
+
+    def _timeout_handler(self, failure):
+        # TODO ---- could try to launch the bitmask daemon here and retry
+        if failure.trap(ZmqRequestTimeoutError) == ZmqRequestTimeoutError:
+            print (Fore.RED + "[ERROR] Timeout contacting the bitmask daemon. "
+                   "Is it running?" + Fore.RESET)