fix login?

Greeter/scripts/get-users

@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+"""
+Get users that are allowed to log in graphically.
+
+Criteria for a user to be considered a "graphical login" user:
+1. UID >= 1000 (regular user, not a system account)
+2. Has a valid login shell (not /sbin/nologin, /bin/false, etc.)
+3. Has a home directory that exists
+
+Output: JSON array of user objects with username, uid, home, shell, and face (avatar path)
+"""
+import json
+import os
+import pwd
+
+# Shells that indicate a user cannot log in
+INVALID_SHELLS = {
+    "/sbin/nologin",
+    "/usr/sbin/nologin",
+    "/usr/bin/nologin",
+    "/bin/false",
+    "/usr/bin/false",
+    "/bin/true",
+    "/usr/bin/true",
+    "",
+}
+
+# Minimum UID for regular users (typically 1000 on most Linux distributions)
+MIN_UID = 1000
+
+
+def get_face_path(home: str, username: str) -> str:
+    """Get the path to the user's face/avatar image if it exists."""
+    # Check common locations for user avatars
+    candidates = [
+        os.path.join(home, ".face"),
+        os.path.join(home, ".face.icon"),
+        f"/var/lib/AccountsService/icons/{username}",
+    ]
+    
+    for path in candidates:
+        if os.path.isfile(path):
+            return path
+    
+    return ""
+
+
+def is_graphical_user(pw: pwd.struct_passwd) -> bool:
+    """Check if a user is allowed to log in graphically."""
+    # Must be a regular user (UID >= 1000)
+    if pw.pw_uid < MIN_UID:
+        return False
+    
+    # Must have a valid login shell
+    if pw.pw_shell in INVALID_SHELLS:
+        return False
+    
+    # Home directory should exist
+    if not os.path.isdir(pw.pw_dir):
+        return False
+    
+    return True
+
+
+def main():
+    users = []
+    
+    for pw in pwd.getpwall():
+        if not is_graphical_user(pw):
+            continue
+        
+        users.append({
+            "username": pw.pw_name,
+            "uid": pw.pw_uid,
+            "home": pw.pw_dir,
+            "shell": pw.pw_shell,
+            "gecos": pw.pw_gecos.split(",")[0] if pw.pw_gecos else "",  # Full name from GECOS field
+            "face": get_face_path(pw.pw_dir, pw.pw_name),
+        })
+    
+    # Sort by username for consistent ordering
+    users.sort(key=lambda u: u["username"])
+    
+    print(json.dumps(users))
+
+
+if __name__ == "__main__":
+    main()