Working on getting WEP attacks finished

Lots of small fixes/tweaks/changes.

py/Aircrack.py

@@ -0,0 +1,71 @@
+#!/usr/bin/python
+
+from Process import Process
+from Configuration import Configuration
+
+import os
+
+class Aircrack(object):
+    def __init__(self, ivs_file):
+        self.cracked_file = Configuration.temp() + 'wepkey.txt'
+
+        # Delete previous cracked files
+        if os.path.exists(self.cracked_file):
+            os.remove(self.cracked_file)
+
+        command = [
+            'aircrack-ng',
+            '-a', '1',
+            '-l', self.cracked_file,
+            ivs_file
+        ]
+
+        self.pid = Process(command, devnull=True)
+
+
+    def is_running(self):
+        return self.pid.poll() == None
+
+
+    def is_cracked(self):
+        return os.path.exists(self.cracked_file)
+
+
+    def get_key_hex_ascii(self):
+        if not self.is_cracked():
+            raise Exception('Cracked file not found')
+        f = open(self.cracked_file, 'r')
+        hex_raw = f.read()
+        f.close()
+
+        hex_key = ''
+        ascii_key = ''
+        while len(hex_raw) > 0:
+            if hex_key != '':
+                hex_key += ':'
+            hex_key += hex_raw[0:2]
+            # Convert hex to decimal
+            code = int(hex_raw[0:2], 16)
+            if code < 32 or code > 127:
+                # Hex key is non-printable in ascii
+                ascii_key = None
+                continue
+            elif ascii_key == None:
+                continue
+            # Convert decimal to char
+            ascii_key += chr(code)
+            hex_raw = hex_raw[2:]
+        return (hex_key, ascii_key)
+
+if __name__ == '__main__':
+    from time import sleep
+    Configuration.initialize()
+    a = Aircrack('tests/files/wep-crackable.ivs')
+    while a.is_running():
+        sleep(1)
+    if a.is_cracked():
+        print "cracked!"
+        print '(hex, ascii) =', a.get_key_hex_ascii()
+    else:
+        print "Not cracked"
+    Configuration.exit_gracefully(0)