treeland/debian/treeland.postinst

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#!/bin/sh
set -e
. /usr/share/debconf/confmodule
THIS_PACKAGE=ddm
DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager
# creating dde group if he isn't already there
if ! getent group dde >/dev/null; then
addgroup --system dde
fi
# creating dde user if he isn't already there
if ! getent passwd dde >/dev/null; then
adduser --system --ingroup dde --home /var/lib/ddm dde
usermod -c "Simple Wayland Display Manager" dde
usermod -d "/var/lib/ddm" dde
usermod -g "dde" dde
usermod -s "/bin/false" dde
fi
if [ ! -e /var/lib/ddm ]; then
# If dde was purged while running, the home dir gets removed but the user
# remains (as deluser refuses to delete a user that's in use).
mkdir -p /var/lib/ddm
fi
if [ -d /var/lib/ddm ]; then
# There has been a -R in version prior to 0.19
# but this opens up symlink attacks. Remove it.
chown dde:dde /var/lib/ddm
chmod 0750 /var/lib/ddm
fi
# debconf is not a registry, so we only fiddle with the default file if it
# does not exist
if ! [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
if db_get shared/default-x-display-manager; then
if [ -z "$RET" ]; then
RET="$THIS_PACKAGE"
fi
if [ "$THIS_PACKAGE" != "$RET" ]; then
echo "Please be sure to run \"dpkg --configure $RET\"."
fi
if db_get "$RET"/daemon_name; then
echo "$RET" > "$DEFAULT_DISPLAY_MANAGER_FILE"
fi
fi
fi
# remove the displaced old default display manager file if it exists
if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE.dpkg-tmp" ]; then
rm "$DEFAULT_DISPLAY_MANAGER_FILE.dpkg-tmp"
fi
# debconf hangs if ddm gets started below without this
db_stop || true
if [ "$1" = "configure" ]; then
invoke-rc.d dbus reload || true
fi
DEFAULT_SERVICE=/etc/systemd/system/display-manager.service
# set default-display-manager systemd service link according to our config
if [ "$1" = configure ] && [ -d /etc/systemd/system/ ]; then
if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
SERVICE=/lib/systemd/system/$(basename $(cat "$DEFAULT_DISPLAY_MANAGER_FILE")).service
if [ -h "$DEFAULT_SERVICE" ] && [ $(readlink "$DEFAULT_SERVICE") = /dev/null ]; then
echo "Display manager service is masked" >&2
elif [ -e "$SERVICE" ]; then
ln -sf "$SERVICE" "$DEFAULT_SERVICE"
else
echo "ERROR: $SERVICE is the selected default display manager but does not exist" >&2
fi
fi
fi
if [ -x /etc/init.d/ddm ]; then
update-rc.d ddm defaults >/dev/null 2>&1
fi
touch /var/log/ddm.log
chown dde:dde /var/log/ddm.log
#DEBHELPER#
exit 0