#!/bin/bash
# postinst script for core-agent-linux
#
# see: dh_installdeb(1)

set -e

# The postint script may be called in the following ways:
#   * <postinst> 'configure' <most-recently-configured-version>
#   * <old-postinst> 'abort-upgrade' <new version>
#   * <conflictor's-postinst> 'abort-remove' 'in-favour' <package>
#     <new-version>
#   * <postinst> 'abort-remove'
#   * <deconfigured's-postinst> 'abort-deconfigure' 'in-favour'
#     <failed-install-package> <version> 'removing'
#     <conflicting-package> <version>
#
#    For details, see http://www.debian.org/doc/debian-policy/ or
# https://www.debian.org/doc/debian-policy/ch-maintainerscripts.html or
# the debian-policy package

# Directory that modified desktop entry config files are stored in
XDG_CONFIG_QUBES="/usr/share/qubes/xdg"

remove_ShowIn() {
    if [ -e "${1}" ]; then
        sed -i '/^\(Not\|Only\)ShowIn/d' "${1}"
    fi
}

showIn() {
    desktop_entry="${1}"
    shown_in="${2}"
    message="${shown_in:-"Shown in All;"}" 
    desktop_entry_qubes="${XDG_CONFIG_QUBES}/autostart/${desktop_entry##*/}"

    # Make sure Qubes autostart directory exists
    mkdir -p "${XDG_CONFIG_QUBES}/autostart"

    # Desktop entry exists, so move to Qubes directory and modify it
    if [ -e "${desktop_entry}" ]; then
        echo "Desktop Entry Modification - ${message} ${desktop_entry##*/}..."
        cp -pf "${desktop_entry}" "${desktop_entry_qubes}"

        remove_ShowIn "${desktop_entry_qubes}"
        sed -i '/^X-GNOME-Autostart-enabled.*[fF0]/d' "${desktop_entry_qubes}"

        # Will only be '' if shown in all
        if [ ! "${shown_in}x" == "x" ]; then
            echo "${shown_in}" >> "${desktop_entry_qubes}" || true
        fi

    # Desktop entry must have been removed, so also remove from Qubes directory
    else
        echo "Desktop Entry Modification - Remove: ${desktop_entry##*/}..."
        rm -f "${desktop_entry_qubes}"
    fi
}

systemdPreload() {
    # Debian systemd helper does not yet honour preset, therefore use
    # systemctl preset on each unit file (not using preset-all either since
    # wheezy does not support it) listed in 75-qubes-vm.preset.

    systemctl --no-reload preset-all > /dev/null 2>&1 && PRESET_FAILED=0 || PRESET_FAILED=1

    # Mask any static unit files that are marked to be disabled
    grep '^[[:space:]]*[^#;]' /lib/systemd/system-preset/75-qubes-vm.preset | while read action unit_name; do
        case "${action}" in
        disable)
            if [ -e "/lib/systemd/system/${unit_name}" ]; then
                if ! fgrep -q '[Install]' "/lib/systemd/system/${unit_name}"; then
                    deb-systemd-helper mask "${unit_name}" > /dev/null 2>&1 || true
                fi
            fi
            ;;
        *)
            # preset-all is not available in wheezy; so preset each unit file listed in 75-qubes-vm.preset
            if [ "${PRESET_FAILED}" -eq 1 ]; then
                systemctl --no-reload preset "${unit_name}" > /dev/null 2>&1 || true
            fi
            ;;
        esac
    done

    systemctl daemon-reload
}

# Manually trigger all triggers to automaticatly configure
triggerTriggers() {
    path="$(readlink -m ${0})"
    triggers="${path/postinst/triggers}"

    awk '{sub(/[ \t]*#.*/,"")} NF' ${triggers} | while read line
    do
        /bin/bash -c "${0} triggered ${line##* }" || true
    done
}

case "${1}" in
    configure)
        # disable some Upstart services
        for init in plymouth-shutdown \
                    prefdm \
                    splash-manager \
                    start-ttys \
                    tty ; do
            dpkg-divert --divert /etc/init/${init}.conf.qubes-disabled --package qubes-core-agent --rename --add /etc/init/${init}.conf
        done
        dpkg-divert --divert /etc/init/serial.conf.qubes-orig --package qubes-core-agent --rename --add /etc/init/serial.conf

        # Create NetworkManager configuration if we do not have it
        if ! [ -e /etc/NetworkManager/NetworkManager.conf ]; then
            echo '[main]' > /etc/NetworkManager/NetworkManager.conf
            echo 'plugins = keyfile' >> /etc/NetworkManager/NetworkManager.conf
            echo '[keyfile]' >> /etc/NetworkManager/NetworkManager.conf
        fi
        /usr/lib/qubes/qubes-fix-nm-conf.sh

        # make sure locale is really generated
        current_locale=`grep 'LANG\|LC_ALL' /etc/default/locale|head -n 1|cut -f 2 -d =`
        if [ -n "$current_locale" ] && ! locale -a | grep -q "$current_locale"; then
            base=`echo "$current_locale" | cut -f 1 -d .`
            charmap=`echo "$current_locale.UTF-8" | cut -f 2 -d .`
            [ -n "$charmap" ] && charmap="-f $charmap"
            localedef -i $base $charmap $current_locale
        fi

        # Remove old firmware updates link
        if [ -L /lib/firmware/updates ]; then
            rm -f /lib/firmware/updates
        fi

        # Location of files which contains list of protected files
        PROTECTED_FILE_LIST='/etc/qubes/protected-files.d'

        # ensure that hostname resolves to 127.0.1.1 resp. ::1 and that /etc/hosts is
        # in the form expected by qubes-sysinit.sh
        if ! grep -rq "^/etc/hostname$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
            for ip in '127\.0\.1\.1' '::1'; do
                if grep -q "^${ip}\(\s\|$\)" /etc/hosts; then
                    sed -i "/^${ip}\s/,+0s/\(\s`hostname`\)\+\(\s\|$\)/\2/g" /etc/hosts || true
                    sed -i "s/^${ip}\(\s\|$\).*$/\0 `hostname`/" /etc/hosts || true
                else
                    echo "${ip//\\/} `hostname`" >> /etc/hosts || true
                fi
            done
        fi

        # remove hostname from 127.0.0.1 line (in debian the hostname is by default
        # resolved to 127.0.1.1)
        if ! grep -rq "^/etc/hosts$" "${PROTECTED_FILE_LIST}" 2>/dev/null; then
            sed -i "/^127\.0\.0\.1\s/,+0s/\(\s`hostname`\)\+\(\s\|$\)/\2/g" /etc/hosts || true
        fi

        chown user:user /home_volatile/user

        if ! dpkg-statoverride --list /var/lib/qubes/dom0-updates >/dev/null 2>&1; then
            dpkg-statoverride --update --add user user 775 /var/lib/qubes/dom0-updates
        fi

        # Set default "runlevel"
        rm -f /etc/systemd/system/default.target
        ln -s /lib/systemd/system/multi-user.target /etc/systemd/system/default.target

        ## Systemd preload-all
        systemdPreload

        ## Process all triggers which will set defaults to wanted values
        triggerTriggers
        ;;

    abort-upgrade|abort-remove|abort-deconfigure)
        exit 0
        ;;

    triggered)
        for trigger in ${2}; do
            case "${trigger}" in

                # Update Qubes App Menus
                /usr/share/applications)
                    echo "Updating Qubes App Menus..."
                    /usr/lib/qubes/qubes-trigger-sync-appmenus.sh || true

                    ## Systemd preload-all
                    #systemdPreload
                    ;;

                # Install overridden serial.conf init script 
                /etc/init/serial.conf)
                    echo "Installing over-ridden serial.conf init script..."
                    if [ -e /etc/init/serial.conf ]; then
                        cp /usr/share/qubes/serial.conf /etc/init/serial.conf
                    fi
                    ;;

                # Disable SELinux"
                /etc/selinux/config)
                    echo "Disabling SELinux..."
                    if [ -e /etc/selinux/config ]; then
                        sed -e s/^SELINUX=.*$/SELINUX=disabled/ </etc/selinux/config >/etc/selinux/config.processed
                        mv /etc/selinux/config.processed /etc/selinux/config
                        setenforce 0 2>/dev/null
                    fi
                    ;;

                # Desktop Entry Modification - Remove existing rules
                /etc/xdg/autostart/gpk-update-icon.desktop | \
                /etc/xdg/autostart/nm-applet.desktop | \
                /etc/xdg/autostart/abrt-applet.desktop | \
                /etc/xdg/autostart/notify-osd.desktop)
                    showIn "${trigger}"
                    ;;

                # Desktop Entry Modification - Not shown in Qubes
                /etc/xdg/autostart/pulseaudio.desktop | \
                /etc/xdg/autostart/deja-dup-monitor.desktop | \
                /etc/xdg/autostart/imsettings-start.desktop | \
                /etc/xdg/autostart/krb5-auth-dialog.desktop | \
                /etc/xdg/autostart/pulseaudio.desktop | \
                /etc/xdg/autostart/restorecond.desktop | \
                /etc/xdg/autostart/sealertauto.desktop | \
                /etc/xdg/autostart/gnome-power-manager.desktop | \
                /etc/xdg/autostart/gnome-sound-applet.desktop | \
                /etc/xdg/autostart/gnome-screensaver.desktop | \
                /etc/xdg/autostart/orca-autostart.desktop)
                    showIn "${trigger}" 'NotShowIn=QUBES;'
                    ;;

                # Desktop Entry Modification - Not shown in in DisposableVM
                /etc/xdg/autostart/gcm-apply.desktop)
                    showIn "${trigger}" 'NotShowIn=DisposableVM;'
                    ;;

                # Desktop Entry Modification - Only shown in AppVM
                /etc/xdg/autostart/gnome-keyring-gpg.desktop | \
                /etc/xdg/autostart/gnome-keyring-pkcs11.desktop | \
                /etc/xdg/autostart/gnome-keyring-secrets.desktop | \
                /etc/xdg/autostart/gnome-keyring-ssh.desktop | \
                /etc/xdg/autostart/gnome-settings-daemon.desktop | \
                /etc/xdg/autostart/user-dirs-update-gtk.desktop | \
                /etc/xdg/autostart/gsettings-data-convert.desktop)
                    showIn "${trigger}" 'OnlyShowIn=GNOME;AppVM;'
                    ;;

                # Desktop Entry Modification - Only shown in Gnome & UpdateableVM
                /etc/xdg/autostart/gpk-update-icon.desktop)
                    showIn "${trigger}" 'OnlyShowIn=GNOME;UpdateableVM;'
                    ;;

                # Desktop Entry Modification - Only shown in Gnome & Qubes
                /etc/xdg/autostart/nm-applet.desktop)
                    showIn "${trigger}" 'OnlyShowIn=GNOME;QUBES;'
                    ;;

                *)
                    echo "postinst called with unknown trigger \`${2}'" >&2
                    exit 1
                    ;;
            esac
        done
        exit 0
        ;;

    *)
        echo "postinst called with unknown argument \`${1}'" >&2
        exit 1
        ;;
esac

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

exit 0

# vim: set ts=4 sw=4 sts=4 et :