Refactor: move password policy to its own role

2 files changed, 94 insertions, 0 deletions

diff --git a/roles/password_policy/templates/archlinux-pam-pw.j2 b/roles/password_policy/templates/archlinux-pam-pw.j2
new file mode 100644
index 00000000..b5e3914e
--- /dev/null
+++ b/roles/password_policy/templates/archlinux-pam-pw.j2
@@ -0,0 +1,45 @@
+#%PAM-1.0
+
+auth       required                    pam_faillock.so      preauth
+# Optionally use requisite above if you do not want to prompt for the password
+# on locked accounts.
+-auth      [success=2 default=ignore]  pam_systemd_home.so
+auth       [success=1 default=bad]     pam_unix.so          try_first_pass nullok
+auth       [default=die]               pam_faillock.so      authfail
+auth       optional                    pam_permit.so
+auth       required                    pam_env.so
+auth       required                    pam_faillock.so      authsucc
+# If you drop the above call to pam_faillock.so the lock will be done also
+# on non-consecutive authentication failures.
+
+-account   [success=1 default=ignore]  pam_systemd_home.so
+account    required                    pam_unix.so
+account    optional                    pam_permit.so
+account    required                    pam_time.so
+
+{% if password_policy_enabled %}
+-password  [success=2 default=ignore]  pam_systemd_home.so
+password   requisite                   pam_pwquality.so     retry=3 \
+                                                            difok={{ password_policy_difok }} \
+                                                            minlen={{ password_policy_minlen }} \
+                                                            dcredit={{ password_policy_dcredit }} \
+                                                            ucredit={{ password_policy_ucredit }} \
+                                                            ocredit={{ password_policy_ocredit }} \
+                                                            lcredit={{ password_policy_lcredit }} \
+                                                            minclass={{ password_policy_minclass }} \
+                                                            maxrepeat={{ password_policy_maxrepeat }} \
+                                                            maxclassrepeat={{ password_policy_maxclassrepeat }} \
+                                                            gecoscheck={{ password_policy_gecoscheck }}
+{% else %}
+-password  [success=1 default=ignore]  pam_systemd_home.so
+{% endif %}
+password   required                    pam_unix.so          try_first_pass \
+                                                            nullok \
+                                                            shadow \
+                                                            minlen={{ password_policy_minlen }}
+password   optional                    pam_permit.so
+
+-session   optional                    pam_systemd_home.so
+session    required                    pam_limits.so
+session    required                    pam_unix.so
+session    optional                    pam_permit.so
diff --git a/roles/password_policy/templates/debian-pam-pw.j2 b/roles/password_policy/templates/debian-pam-pw.j2
new file mode 100644
index 00000000..dceedf97
--- /dev/null
+++ b/roles/password_policy/templates/debian-pam-pw.j2
@@ -0,0 +1,49 @@
+#
+# /etc/pam.d/common-password - password-related modules common to all services
+#
+# This file is included from other service-specific PAM config files,
+# and should contain a list of modules that define the services to be
+# used to change user passwords.  The default is pam_unix.
+
+# Explanation of pam_unix options:
+# The "yescrypt" option enables
+#hashed passwords using the yescrypt algorithm, introduced in Debian
+#11.  Without this option, the default is Unix crypt.  Prior releases
+#used the option "sha512"; if a shadow password hash will be shared
+#between Debian 11 and older releases replace "yescrypt" with "sha512"
+#for compatibility .  The "obscure" option replaces the old
+#`OBSCURE_CHECKS_ENAB' option in login.defs.  See the pam_unix manpage
+#for other options.
+
+# As of pam 1.0.1-6, this file is managed by pam-auth-update by default.
+# To take advantage of this, it is recommended that you configure any
+# local modules either before or after the default block, and use
+# pam-auth-update to manage selection of other modules.  See
+# pam-auth-update(8) for details.
+
+# here are the per-package modules (the "Primary" block)
+{% if password_policy_enabled %}
+password        requisite                       pam_pwquality.so retry=3 \
+                                                                 difok={{ password_policy_difok }} \
+                                                                 minlen={{ password_policy_minlen }} \
+                                                                 dcredit={{ password_policy_dcredit }} \
+                                                                 ucredit={{ password_policy_ucredit }} \
+                                                                 ocredit={{ password_policy_ocredit }} \
+                                                                 lcredit={{ password_policy_lcredit }} \
+                                                                 minclass={{ password_policy_minclass }} \
+                                                                 maxrepeat={{ password_policy_maxrepeat }} \
+                                                                 maxclassrepeat={{ password_policy_maxclassrepeat }} \
+                                                                 gecoscheck={{ password_policy_gecoscheck }}
+password        [success=1 default=ignore]      pam_unix.so obscure use_authtok try_first_pass yescrypt
+{% else %}
+password        [success=1 default=ignore]      pam_unix.so obsecure sha512 minlen={{ password_policy_minlen }}
+{% endif %}
+# here's the fallback if no module succeeds
+password        requisite                       pam_deny.so
+# prime the stack with a positive return value if there isn't one already;
+# this avoids us returning an error just because nothing sets a success code
+# since the modules above will each just jump around
+password        required                        pam_permit.so
+# and here are more per-package modules (the "Additional" block)
+password        optional                        pam_gnome_keyring.so
+# end of pam-auth-update config