9 files changed, 335 insertions, 0 deletions
diff --git a/system/lightdm/42-lightdm.rules b/system/lightdm/42-lightdm.rules
new file mode 100644
index 0000000000..eda155bf30
--- /dev/null
+++ b/system/lightdm/42-lightdm.rules
@@ -0,0 +1,15 @@
+polkit.addRule(function(action, subject) {
+    if (subject.user == "lightdm") {
+        polkit.log("action=" + action);
+        polkit.log("subject=" + subject);
+        if (action.id.indexOf("org.freedesktop.login1.") == 0) {
+            return polkit.Result.YES;
+        }
+        if (action.id.indexOf("org.freedesktop.consolekit.system.") == 0) {
+            return polkit.Result.YES;
+        }
+        if (action.id.indexOf("org.freedesktop.upower.") == 0) {
+            return polkit.Result.YES;
+        }
+    }
+});
diff --git a/system/lightdm/README b/system/lightdm/README
new file mode 100644
index 0000000000..0402df175a
--- /dev/null
+++ b/system/lightdm/README
@@ -0,0 +1,16 @@
+LightDM is a lightweight, cross-desktop display manager.
+
+A "lightdm" user and group must be set up prior to running this script.
+That is - please run the following commands:
+  groupadd -g 380 lightdm
+  useradd -d /var/lib/lightdm -s /bin/false -u 380 -g 380 lightdm
+
+
+To load lightdm upon boot:
+
+Edit /etc/inittab. Change the default runlevel from 3 to 4.
+Then, edit /etc/rc.d/rc.4 and add the following section:
+
+if [ -x /usr/bin/lightdm ]; then
+  exec /usr/bin/lightdm
+fi
diff --git a/system/lightdm/default-config.patch b/system/lightdm/default-config.patch
new file mode 100644
index 0000000000..edd92d058d
--- /dev/null
+++ b/system/lightdm/default-config.patch
@@ -0,0 +1,30 @@
+--- a/data/lightdm.conf
++++ b/data/lightdm.conf
+@@ -22,7 +22,7 @@
+ #start-default-seat=true
+ #greeter-user=lightdm
+ #minimum-display-number=0
+-#minimum-vt=7
++minimum-vt=7
+ #lock-memory=true
+ #user-authority-in-system-dir=false
+ #guest-account-script=guest-account
+@@ -36,6 +36,8 @@
+ #backup-logs=true
+ #dbus-service=true
+ 
++sessions-directory=/usr/share/xsessions
++
+ #
+ # Seat configuration
+ #
+--- a/data/users.conf
++++ b/data/users.conf
+@@ -9,6 +9,6 @@
+ # hidden-shells = Shells that indicate a user cannot login
+ #
+ [UserList]
+-minimum-uid=500
++minimum-uid=1000
+ hidden-users=nobody nobody4 noaccess
+ hidden-shells=/bin/false /usr/sbin/nologin /sbin/nologin
diff --git a/system/lightdm/lightdm.SlackBuild b/system/lightdm/lightdm.SlackBuild
new file mode 100644
index 0000000000..b687ea7313
--- /dev/null
+++ b/system/lightdm/lightdm.SlackBuild
@@ -0,0 +1,164 @@
+#!/bin/bash
+
+# Slackware build script for lightdm
+
+# Copyright 2025 Isaac Yu <isaacyu@protonmail.com>
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# This SlackBuild is derived from the following sources:
+# Frank Honolka:
+# https://gitlab.com/slackernetuk/slackware-xfce-classic/-/tree/master/lightdm
+# Slint (SLKBUILD originally written by George Vlahavas):
+# https://slackware.uk/slint/x86_64/slint-15.0/source/lightdm/
+
+cd $(dirname $0) ; CWD=$(pwd)
+
+PRGNAM=lightdm
+VERSION=${VERSION:-1.32.0}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+PKGTYPE=${PKGTYPE:-tgz}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
+  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
+  exit 0
+fi
+
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+# This SlackBuild requires a "lightdm" user and group, with UID 380 and GID 380.
+# See http://slackbuilds.org/uid_gid.txt for recommended UID/GIDs
+bailout() {
+  echo "  You must have lightdm user and group:"
+  echo "    # groupadd -g 380 lightdm"
+  echo "    # useradd -d /var/lib/lightdm -s /bin/false -u 380 -g 380 lightdm"
+  exit 1
+}
+
+# Bail if user isn't valid on your system
+if ! getent group lightdm 1>/dev/null 2>/dev/null ; then
+  bailout
+elif ! getent passwd lightdm 1>/dev/null 2>/dev/null ; then
+  bailout
+fi
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+tar xvf $CWD/$PRGNAM-$VERSION.tar.xz
+cd $PRGNAM-$VERSION
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+patch -p1 < $CWD/default-config.patch
+sed -i s/systemd/elogind/ data/pam/*
+
+CFLAGS="$SLKCFLAGS" \
+CXXFLAGS="$SLKCFLAGS" \
+./configure \
+  --prefix=/usr \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --libexecdir=/usr/lib${LIBDIRSUFFIX}/lightdm \
+  --localstatedir=/var \
+  --sbindir=/usr/bin \
+  --sysconfdir=/etc \
+  --disable-static \
+  --disable-tests \
+  --with-greeter-user=lightdm  \
+  --with-greeter-session=lightdm-gtk-greeter \
+  --disable-liblightdm-qt5 \
+  --mandir=/usr/man \
+  --docdir=/usr/doc/$PRGNAM-$VERSION \
+  --build=$ARCH-slackware-linux
+
+make
+make install DESTDIR=$PKG
+
+cp tests/src/lightdm-session $PKG/usr/bin
+sed -i '1 s/sh/bash --login/' $PKG/usr/bin/lightdm-session
+rm -rf $PKG/etc/init
+
+install -v -dm755 -o lightdm -g lightdm $PKG/var/lib/lightdm
+install -v -dm755 -o lightdm -g lightdm $PKG/var/lib/lightdm-data
+install -v -dm755 -o lightdm -g lightdm $PKG/var/cache/lightdm
+install -v -dm770 -o lightdm -g lightdm $PKG/var/log/lightdm
+
+# Remove .la file
+rm $PKG/usr/lib${LIBDIRSUFFIX}/liblightdm-gobject-1.la
+
+# Remove apparmor profiles - they only work with Ubuntu's apparmor package
+# Refer to bug #494426 for more details:
+# https://bugs.gentoo.org/494426
+rm -rf $PKG/etc/apparmor.d
+
+# PAM
+cp $CWD/pam.d/* $PKG/etc/pam.d/
+
+# PolicyKit
+mkdir -p -m700 $PKG/usr/share/polkit-1/rules.d
+chown polkitd $PKG/usr/share/polkit-1/rules.d
+install -m 644 $CWD/42-lightdm.rules $PKG/usr/share/polkit-1/rules.d/42-lightdm.rules
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+find $PKG/usr/man -type f -exec gzip -9 {} \;
+for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a COPYING.GPL3 COPYING.LGPL2 COPYING.LGPL3 NEWS README.md $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
diff --git a/system/lightdm/lightdm.info b/system/lightdm/lightdm.info
new file mode 100644
index 0000000000..05391a40b1
--- /dev/null
+++ b/system/lightdm/lightdm.info
@@ -0,0 +1,10 @@
+PRGNAM="lightdm"
+VERSION="1.32.0"
+HOMEPAGE="https://github.com/canonical/lightdm"
+DOWNLOAD="https://github.com/canonical/lightdm/releases/download/1.32.0/lightdm-1.32.0.tar.xz"
+MD5SUM="e62a5da6c35f612e4d9575eda5c8d467"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES=""
+MAINTAINER="Isaac Yu"
+EMAIL="isaacyu@protonmail.com"
diff --git a/system/lightdm/pam.d/lightdm b/system/lightdm/pam.d/lightdm
new file mode 100644
index 0000000000..d1f26f4267
--- /dev/null
+++ b/system/lightdm/pam.d/lightdm
@@ -0,0 +1,30 @@
+#%PAM-1.0
+
+# Block login if they are globally disabled
+auth      required pam_nologin.so
+
+# Load environment from /etc/environment and ~/.pam_environment
+auth      required pam_env.so
+
+# Use /etc/passwd and /etc/shadow for passwords
+auth      required pam_unix.so
+
+# Authentication support for gnome-keyring and kwallet5
+-auth     optional pam_gnome_keyring.so
+-auth     optional pam_kwallet5.so
+
+# Check account is active, change password if required
+account   required pam_unix.so
+
+# Allow password to be changed
+password  required pam_unix.so
+
+# Setup session
+# Support elogind (for Slackware) rather than systemd (as per lightdm's upstream default)
+session   required pam_unix.so
+-session  optional pam_elogind.so
+-session  optional pam_ck_connector.so nox11
+
+# Auto-unlocking support for gnome-keyring and kwallet5
+-session  optional pam_gnome_keyring.so auto_start
+-session  optional pam_kwallet5.so auto_start
diff --git a/system/lightdm/pam.d/lightdm-autologin b/system/lightdm/pam.d/lightdm-autologin
new file mode 100644
index 0000000000..48d0d76b1d
--- /dev/null
+++ b/system/lightdm/pam.d/lightdm-autologin
@@ -0,0 +1,32 @@
+#%PAM-1.0
+# Block login if shell in nologin or false
+auth      required pam_succeed_if.so shell notin /sbin/nologin:/usr/sbin/nologin:/bin/false:/usr/bin/false
+
+# Block login if they are globally disabled
+auth      required pam_nologin.so
+
+# Load environment from /etc/environment and ~/.pam_environment
+auth      required pam_env.so
+
+# Allow access without authentication
+auth      required pam_permit.so
+
+# Authentication support for gnome-keyring and kwallet5
+-auth     optional pam_gnome_keyring.so
+-auth     optional pam_kwallet5.so
+
+# Stop autologin if account requires action
+account   required pam_unix.so
+
+# Can't change password
+password  required pam_deny.so
+
+# Setup session
+# Support elogind (for Slackware) rather than systemd (as per lightdm's upstream default)
+session   required pam_unix.so
+-session  optional pam_elogind.so
+-session  optional pam_ck_connector.so nox11
+
+# Auto-unlocking support for gnome-keyring and kwallet5
+-session  optional pam_gnome_keyring.so auto_start
+-session  optional pam_kwallet5.so auto_start
diff --git a/system/lightdm/pam.d/lightdm-greeter b/system/lightdm/pam.d/lightdm-greeter
new file mode 100644
index 0000000000..bdeede0d4b
--- /dev/null
+++ b/system/lightdm/pam.d/lightdm-greeter
@@ -0,0 +1,19 @@
+#%PAM-1.0
+
+# Load environment from /etc/environment and ~/.pam_environment
+auth      required pam_env.so
+
+# Always let the greeter start without authentication
+auth      required pam_permit.so
+
+# No action required for account management
+account   required pam_permit.so
+
+# Can't change password
+password  required pam_deny.so
+
+# Setup session
+# Support elogind (for Slackware) rather than systemd (as per lightdm's upstream default)
+session   required pam_unix.so
+-session  optional pam_elogind.so
+-session  optional pam_ck_connector.so nox11
diff --git a/system/lightdm/slack-desc b/system/lightdm/slack-desc
new file mode 100644
index 0000000000..04409da187
--- /dev/null
+++ b/system/lightdm/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+       |-----handy-ruler------------------------------------------------------|
+lightdm: lightdm (cross-desktop display manager)
+lightdm:
+lightdm: lightdm is a cross-desktop display manager.
+lightdm:
+lightdm:
+lightdm:
+lightdm:
+lightdm:
+lightdm:
+lightdm: https://github.com/canonical/lightdm
+lightdm: