118 lines
3.2 KiB
Python
Executable File
118 lines
3.2 KiB
Python
Executable File
#!/usr/bin/env python3
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import glob
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import json
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import os
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import pwd
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# Shells that indicate a user cannot log in
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INVALID_SHELLS = {
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"/sbin/nologin",
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"/usr/sbin/nologin",
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"/usr/bin/nologin",
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"/bin/false",
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"/usr/bin/false",
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"/bin/true",
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"/usr/bin/true",
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"",
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}
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# Minimum UID for regular users (typically 1000 on most Linux distributions)
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MIN_UID = 1000
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GREETER_IMAGES_DIR = "/etc/zshell-greeter/images"
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def get_face_path(home: str, username: str) -> str:
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"""Get the path to the user's face/avatar image if it exists."""
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greeter_candidates = [
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os.path.join(GREETER_IMAGES_DIR, f"{username}.face"),
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os.path.join(GREETER_IMAGES_DIR, f"{username}.face.icon"),
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]
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for path in greeter_candidates:
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if os.path.isfile(path):
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return path
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for path in sorted(glob.glob(os.path.join(GREETER_IMAGES_DIR, f"{username}.*"))):
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if os.path.isfile(path):
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return path
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direct_path = os.path.join(GREETER_IMAGES_DIR, username)
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if os.path.isfile(direct_path):
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return direct_path
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accountsservice_user = f"/var/lib/AccountsService/users/{username}"
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if os.path.isfile(accountsservice_user):
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try:
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with open(accountsservice_user, "r", encoding="utf-8") as handle:
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for line in handle:
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if line.startswith("Icon="):
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icon_path = line.split("=", 1)[1].strip()
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if icon_path:
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if not os.path.isabs(icon_path):
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icon_path = os.path.join("/var/lib/AccountsService/icons", icon_path)
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if os.path.isfile(icon_path):
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return icon_path
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except OSError:
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pass
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# Check common locations for user avatars
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candidates = [
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os.path.join(home, ".face"),
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os.path.join(home, ".face.icon"),
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f"/var/lib/AccountsService/icons/{username}",
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f"/usr/share/pixmaps/faces/{username}",
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]
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for path in candidates:
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if os.path.isfile(path):
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return path
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for path in sorted(glob.glob(f"/var/lib/AccountsService/icons/{username}.*")):
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if os.path.isfile(path):
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return path
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return ""
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def is_graphical_user(pw: pwd.struct_passwd) -> bool:
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"""Check if a user is allowed to log in graphically."""
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# Must be a regular user (UID >= 1000)
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if pw.pw_uid < MIN_UID:
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return False
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# Must have a valid login shell
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if pw.pw_shell in INVALID_SHELLS:
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return False
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# Home directory should exist
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if not os.path.isdir(pw.pw_dir):
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return False
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return True
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def main():
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users = []
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for pw in pwd.getpwall():
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if not is_graphical_user(pw):
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continue
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users.append({
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"username": pw.pw_name,
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"uid": pw.pw_uid,
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"home": pw.pw_dir,
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"shell": pw.pw_shell,
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"gecos": pw.pw_gecos.split(",")[0] if pw.pw_gecos else "",
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"face": get_face_path(pw.pw_dir, pw.pw_name),
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})
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# Sort by username for consistent ordering
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users.sort(key=lambda u: u["username"])
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print(json.dumps(users))
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if __name__ == "__main__":
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main()
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