write rename_user standalone script

scripts/rename_user.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+"""This script wraps the usermod command to allow user account renames via sudoers."""
+import os
+import sys
+import subprocess
+
+
+def rename_user(username, new_username):
+    # usermod -l new_username -m -d /home/{new_username} username
+    args = [
+        'usermod',
+        '-l',
+        new_username,
+        '-m',
+        '-d',
+        os.path.join('/home', new_username),
+        username
+    ]
+    subprocess.run(args, check=True)
+
+
+def main(argv):
+    if len(argv) < 3:
+        print('[rename_user] Too few arguments passed.', file=sys.stderr)
+        return 1
+
+    try:
+        rename_user(argv[1], argv[2])
+    except subprocess.CalledProcessError as e:
+        print('[rename_user] {}'.format(e), file=sys.stderr)
+        return 2
+
+    return 0
+
+
+if __name__ == '__main__':
+    exit(main(sys.argv))

ttadmin/users/forms.py

@@ -34,6 +34,7 @@ def validate_displayname(display_name):
     if not DISPLAY_NAME_RE.match(display_name):
         raise ValidationError("Valid characters: a-z, A-Z, 0-9, -, _, and '.")
 
+
 def validate_pubkey(pubkey):
     # TODO see if I can get the type out
     key = ssh.SSHKey(pubkey, strict_mode=False, skip_option_parsing=True)