Linux WiFi Profiles Password Grabber

linux-wifi.py

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+########################################
+##   THE SCRIPT MUST BE RUN AS SUDO   ##
+########################################
+
+#    Import subprocess so we can use system commands.
+import subprocess
+
+#    Import the re module so we can make use of regular expressions. 
+import re
+
+#    Python allows us to run system commands using the function 
+#    provided by the subprocess module; 
+#    (subprocess.run(<list of command line arguments go here>, <specify the second argument if you want to capture the output>)).
+#
+#    This script is a parent process that creates a child process which 
+#    runs a system command and will only continue once the child process 
+#    is completed.
+#
+#    To save the contents that get sent to the standard output stream 
+#    (the terminal), we must first specify that we want to capture the output.
+#    To do this we specify the second argument as capture_output = True. 
+#    This information gets stored in the stdout attribute as bytes and 
+#    needs to be decoded before being used as a String in Python.
+#    /etc/NetworkManager/system-connections/ is the directory where wifi
+#    profiles in linux are stored
+directory = "/etc/NetworkManager/system-connections/"
+profile_names = subprocess.run(["ls", directory], capture_output = True).stdout.decode()
+
+#     We parse the profile names from profile_names string using
+#     splitlines() since each profile name is on a separate line
+profile_names_parsed = profile_names.splitlines( )
+
+#    We create an empty list outside of the loop where dictionaries 
+#    containing all the wifi usernames and passwords will be saved.
+
+wifi_list = []
+
+#    If any profile names are not found this means that wifi connections 
+#    have also not been found. So we run this part to check the 
+#    details of the wifi and see whether we can get their passwords.
+
+if len(profile_names_parsed) != 0:
+    for name in profile_names_parsed:
+        #    We put the profile names that have spaces in them inside
+        #    single quotes so that they can be an accessible file names
+        if " " in name:
+            name = f"'{name}'"
+        #    Every wifi connection will need its own dictionary which 
+        #    will be appended to the variable wifi_list.
+        wifi_profile = {}
+        #    We can now run a more specific command to see the information 
+        #    about the wifi connection and if the Security key
+        #    is not absent it may be possible to get the password.
+        profile_info = subprocess.run(["cat", directory + name], capture_output = True).stdout.decode()
+        password = re.search("psk=(.*)\n", profile_info)
+
+        #    We use the regular expression to only look for the absent cases so we can ignore them.
+        if re.search("psk=(.*)\n", profile_info) == None:
+            continue
+        else:
+            #    Assign the ssid of the wifi profile to the dictionary.
+            wifi_profile["ssid"] = name 
+            #    Some wifi connections may not have passwords.
+            if password == None:
+                wifi_profile["password"] = None
+            else:
+                #    We assign the grouping (where the password is contained) that 
+                #    we are interested in to the password key in the dictionary.
+                wifi_profile["password"] = password[1]
+            #    We append the wifi information to the variable wifi_list.
+            wifi_list.append(wifi_profile) 
+
+for x in range(len(wifi_list)):
+    print(wifi_list[x])