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Filename : unix-chkpwd
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# profile initially developed in apparmor.d - Full set of apparmor profiles
# Copyright (C) 2019-2021 Mikhail Morfikov
# SPDX-License-Identifier: GPL-2.0-only

# The apparmor.d project comes with several variables and abstractions
# that are not part of upstream AppArmor yet. Therefore this profile was
# adopted to use abstractions and variables that are available.
# Copyright (C) Christian Boltz 2024-2026

abi <abi/5.0>,

include <tunables/global>

profile unix-chkpwd /{,usr/}{,s}bin/unix_chkpwd flags=(attach_disconnected.path=/att/unix-chkpwd/) {
  include <abstractions/base>
  include <abstractions/nameservice>

  # Temporarily needed until fd delegation lands
  # Also needed while delegation from unconfined is broken
  include <abstractions/consoles>

  # To write records to the kernel auditing log.
  capability audit_write,
  # To read shadow with 000 permissions.
  capability dac_read_search,

  network netlink raw,

  @{exec_path} mr,

  /etc/shadow r,

  # systemd userdb, used in nspawn
  /run/host/userdb/*.user r,
  /run/host/userdb/*.user-privileged r,

  # TODO: we might want to move these into an abstraction
  # for pam_extrausers.so
  /var/lib/extrausers/shadow r,

  # file_inherit
  owner /dev/pts/[0-9]* rw,
  owner /dev/tty[0-9]* rw,

  # disconnected paths - their non-disconnected counterpart is allowed via abstractions
  /att/unix-chkpwd/run/authd.sock rw,
  /att/unix-chkpwd/run/systemd/journal/dev-log w,
  /att/unix-chkpwd/run/systemd/userdb/io.systemd.DynamicUser rw,
  /att/unix-chkpwd/run/systemd/userdb/org.gnome.DisplayManager rw,

  include if exists <local/unix-chkpwd>
}