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|
From: =?utf-8?b?Ik1hcmNvIFRyZXZpc2FuIChUcmV2acOxbyki?= <mail@3v1n0.net>
Date: Thu, 4 Apr 2024 05:32:56 +0200
Subject: utils/gdm-auth-config-debian: Add debian hook for gdm-config
This is distro-specific configuration that gdm allows distro to
configure so add the debian version for it that will be installed when
-Ddistro=debian
---
utils/gdm-auth-config-debian | 175 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 175 insertions(+)
create mode 100755 utils/gdm-auth-config-debian
diff --git a/utils/gdm-auth-config-debian b/utils/gdm-auth-config-debian
new file mode 100755
index 0000000..54f1741
--- /dev/null
+++ b/utils/gdm-auth-config-debian
@@ -0,0 +1,175 @@
+#!/usr/bin/env bash
+#
+# Copyright (C) 2023 Marco Trevisan <marco.trevisan@canonical.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
+command=$1
+action=$2
+action_setting=$3
+
+set -e
+export LANG=C
+
+SSSD_MODULE=pam_sss.so
+PKCS11_MODULE=pam_pkcs11.so
+PAM_MODULES_PATH=/etc/pam.d
+GDM_SMARTCARD_ALTERNATIVE=gdm-smartcard
+
+ENABLED="enabled"
+DISABLED="disabled"
+REQUIRED="required"
+STOP=19
+
+function get_smartcard_mode() {
+ local sc_mode
+ local smartcard_alternative
+
+ smartcard_alternative=$(update-alternatives --query gdm-smartcard \
+ | awk '/^Value: / { print $2; }')
+
+ if [[ "$smartcard_alternative" == *gdm-smartcard-sssd-* ]]; then
+ if [ -n "$(shopt -s nullglob; echo /lib/*/security/$SSSD_MODULE)" ]; then
+ sc_mode=sssd
+ fi
+ elif [[ "$smartcard_alternative" == *gdm-smartcard-pkcs11-* ]]; then
+ if [ -n "$(shopt -s nullglob; echo /lib/*/security/$PKCS11_MODULE)" ]; then
+ sc_mode=pkcs11
+ fi
+ fi
+
+ if [ -z "$sc_mode" ]; then
+ return
+ fi
+
+ if [[ "$smartcard_alternative" == *-exclusive ]]; then
+ sc_mode+="-exclusive"
+ fi
+
+ echo "$sc_mode"
+}
+
+function get_smartcard_module() {
+ sc_mode=$(get_smartcard_mode)
+ echo "${sc_mode%"-exclusive"}"
+}
+
+function is_smartcard_exclusive() {
+ [[ "$(get_smartcard_mode)" == *-exclusive ]]
+}
+
+function set_smartcard_module() {
+ update-alternatives --set "$GDM_SMARTCARD_ALTERNATIVE" \
+ "$PAM_MODULES_PATH/gdm-smartcard-$1-$2"
+}
+
+function has_fingerprint_module() {
+ [ -n "$(shopt -s nullglob; echo /usr/lib/*/security/pam_fprintd.so)" ]
+}
+
+case "$command" in
+ show)
+ case "$action" in
+ password)
+ if is_smartcard_exclusive; then
+ echo $DISABLED
+ else
+ echo $ENABLED
+ fi
+ ;;
+ smartcard)
+ if [ -z "$action_setting" ]; then
+ sc_mode=$(get_smartcard_mode)
+
+ if [ -z "$sc_mode" ]; then
+ echo $DISABLED
+ elif [[ "$sc_mode" == *-exclusive ]]; then
+ echo $REQUIRED
+ elif [ -n "$sc_mode" ]; then
+ echo $ENABLED
+ fi
+ fi
+ ;;
+ fingerprint)
+ if has_fingerprint_module; then
+ # FIXME: Check if this is ignored if disabled from settings
+ echo $ENABLED
+ else
+ echo $DISABLED
+ fi
+ ;;
+ esac
+
+ exit 0
+ ;;
+
+ smartcard)
+ case "$action" in
+ enable)
+ if [ -n "$(get_smartcard_mode)" ]; then
+ module=$(get_smartcard_module)
+ set_smartcard_module "$module" "or-password" || true
+ fi
+ ;;
+ require)
+ if [ -n "$(get_smartcard_mode)" ]; then
+ module=$(get_smartcard_module)
+ set_smartcard_module "$module" "exclusive" || true
+ fi
+ ;;
+ disable)
+ if is_smartcard_exclusive; then
+ module=$(get_smartcard_module)
+ set_smartcard_module "$module" "or-password" || true
+ fi
+ ;;
+ removal-action)
+ ;;
+ esac
+
+ # Continue with default behavior
+ exit 0
+ ;;
+
+ fingerprint)
+ # Use default behavior
+ exit 0
+ ;;
+
+ password)
+ case "$action" in
+ enable)
+ sc_mode=$(get_smartcard_mode)
+ if [[ "$sc_mode" == *-exclusive ]]; then
+ module=$(get_smartcard_module)
+ set_smartcard_module "$module" "or-password" || true
+ fi
+ ;;
+ *)
+ ;;
+ esac
+ # Continue with default behavior
+ exit 0
+ ;;
+
+ *)
+ # Use default behavior
+ exit 0
+ ;;
+esac
+
+# shellcheck disable=SC2317
+exit 1
|
