#!/bin/sh
# postinst script for nagvis
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <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
# the debian-policy package

if dpkg --compare-versions "$2" lt-nl "1:1.7.9+dfsg1-1~"; then
    # help by adding a empty file
    touch /etc/nagvis/apache2.conf

    # unregister old file
    ucf -p /etc/apache2/conf.d/nagvis.conf
    ucfr -p nagvis /etc/apache2/conf.d/nagvis.conf
    # delete helper file
    rm -f /etc/nagvis/apache2.conf.dpkg-new

    rmdir /etc/nagvis/automaps/ 2>/dev/null || true
fi

setperm() {
    user="$1"
    group="$2"
    mode="$3"
    file="$4"
    shift 4
    # only do something when no setting exists
    if ! dpkg-statoverride --list "$file" >/dev/null 2>&1; then
      chown "$user":"$group" "$file"
      chmod "$mode" "$file"
    fi
}

update_permissions() {
    setperm www-data www-data 0755 /etc/nagvis
    setperm www-data www-data 0755 /etc/nagvis/maps
    setperm www-data www-data 0755 /etc/nagvis/conf.d
    setperm www-data www-data 0755 /etc/nagvis/profiles

    setperm www-data www-data 0755 /var/lib/nagvis/userfiles
    setperm www-data www-data 0755 /var/lib/nagvis/userfiles/images/maps
    setperm www-data www-data 0755 /var/lib/nagvis/userfiles/images/shapes

    setperm www-data www-data 0750 /var/cache/nagvis
    setperm www-data www-data 0750 /var/cache/nagvis/tmpl
    setperm www-data www-data 0750 /var/cache/nagvis/tmpl/compile
    setperm www-data www-data 0750 /var/cache/nagvis/tmpl/cache
}

# migrate userfiles from /var/cache/nagvis to /var/lib/nagvis
migrate_userfiles() {
    from="/var/cache/nagvis/userfiles"
    to="/var/lib/nagvis/userfiles"

    for dir in images/maps images/shapes; do
        if [ -d "$from/$dir" ]; then
            echo "moving files from $from/$dir to $to/$dir ..."
            mv "$from/$dir"/* "$to/$dir/"
            rmdir "$from/$dir" || true
        fi
    done

    test -d "$from/images" && rmdir "$from/images" || true
    test -d "$from" && rmdir "$from" || true
}

case "$1" in
    configure)
        # Source debconf library.
        . /usr/share/debconf/confmodule
        db_get nagvis/monitoring_system
        MONITORING="$RET"
        case "$MONITORING" in
            "icinga2"|"icinga"|"nagios"|"shinken")
                ## Creating Configuration file for Nagvis
                nagvis_tmp=$(mktemp)
                cat /usr/share/nagvis/defaults/nagvis.ini.php-sample | sed \
                  -e "s#;file_group=\"\"#file_group=\"www-data\"#g" \
                  -e "s#;file_mode=\"660\"#file_mode=\"660\"#g" \
                  -e "s#;base=\"/usr/local/nagvis/\"#base=\"/usr/share/nagvis/\"#" \
                  -e "s#;htmlbase=\"/nagvis\"#htmlbase=\"/nagvis\"#" \
                  -e "s#\[rotation_demo\]#;\[rotation_demo\]#" \
                  -e "s#interval=15#;interval=15#" \
                  -e "s#maps=\"\(.*\)\"#;maps=\"\1\"#" \
                  > "$nagvis_tmp"
                case "$MONITORING" in
                    "icinga2")
                        sed -i "$nagvis_tmp" \
                          -e "s#;socket=\"unix:/usr/local/nagios/var/rw/live\"#socket=\"unix:/var/run/icinga2/cmd/livestatus\"#"
                    ;;
                    "icinga")
                        sed -i "$nagvis_tmp" \
                          -e "s#;htmlcgi=\"/nagios/cgi-bin\"#htmlcgi=\"/icinga/cgi-bin\"#" \
                          -e "s#;socket=\"unix:/usr/local/nagios/var/rw/live\"#socket=\"unix:/var/lib/icinga/rw/live\"#"
                    ;;
                    "nagios")
                        sed -i "$nagvis_tmp" \
                          -e "s#;htmlcgi=\"/nagios/cgi-bin\"#htmlcgi=\"/nagios/cgi-bin\"#" \
                          -e "s#;socket=\"unix:/usr/local/nagios/var/rw/live\"#socket=\"unix:/var/lib/nagios3/rw/live\"#"
                    ;;
                    "shinken")
                        sed -i "$nagvis_tmp" \
                          -e "s#;htmlcgi=\"/nagios/cgi-bin\"#htmlcgi=\"/nagios/cgi-bin\"#" \
                          -e "s#;socket=\"unix:/usr/local/nagios/var/rw/live\"#socket=\"tcp:localhost:50000\"#"
                    ;;
                esac
                chgrp www-data "$nagvis_tmp"
                chmod g+rw "$nagvis_tmp"
                ucf --debconf-ok "$nagvis_tmp" /etc/nagvis/nagvis.ini.php
                ucfr nagvis /etc/nagvis/nagvis.ini.php
                rm -f "$nagvis_tmp"
                ## Creating Configuration snipplet for Apache
                apache_tmp=$(mktemp)
                sed -e "s#@NAGVIS_PATH@#/usr/share/nagvis/share/#g" \
                  -e "s#@NAGVIS_WEB@#/nagvis#g" \
                  < /usr/share/nagvis/defaults/apache2-nagvis.conf-sample \
                  > "$apache_tmp"
                case "$MONITORING" in
                    "icinga")
                        sed -i "$apache_tmp" \
                          -e "s#@NAGIOS_PATH@/etc#/etc/icinga#g"
                    ;;
                    "nagios")
                        sed -i "$apache_tmp" \
                          -e "s#@NAGIOS_PATH@/etc#/etc/nagios3#g"
                    ;;
                    "shinken")
                        sed -i "$apache_tmp" \
                          -e "s#@NAGIOS_PATH@/etc#/etc/shinken#g"
                    ;;
                esac
                chmod go+r "$apache_tmp"
                ucf --debconf-ok "$apache_tmp" /etc/nagvis/apache2.conf
                ucfr nagvis /etc/nagvis/apache2.conf
                rm -f "$apache_tmp"
            ;;
            "other")
                 # nothing to be done for others
            ;;
        esac

        # enable apache when file exists and we are on autoconfigure
        if [ -f /etc/nagvis/apache2.conf ] && ( [ "$MONITORING" = "nagios" ] || [ "$MONITORING" = "icinga" ] || [ "$MONITORING" = "shinken" ] ); then
            echo "enabling Apache2 config..."

            COMMON_STATE=$(dpkg-query -f '${Status}' -W 'apache2.2-common' 2>/dev/null | awk '{print $3}' || true)

            # NEW method for Apache >= 2.4
            if [ -e /usr/share/apache2/apache2-maintscript-helper ]; then
                . /usr/share/apache2/apache2-maintscript-helper

                apache2_invoke enmod rewrite
                apache2_invoke enconf nagvis

                # remove OLD Apache 2.2 link
                [ -L /etc/apache2/conf.d/nagvis.conf ] && rm /etc/apache2/conf.d/nagvis.conf

            # OLD methods for Apache < 2.4
            elif [ "$COMMON_STATE" = "installed" ] || [ "$COMMON_STATE" = "unpacked" ] ; then
                # enable mod rewrite
                [ -f /etc/apache2/mods-enabled/rewrite.load ] || a2enmod rewrite

                # create symlink if not existing
                [ -f /etc/apache2/conf.d/nagvis.conf ] || ln -vs ../../nagvis/apache2.conf /etc/apache2/conf.d/nagvis.conf

                # reload webserver
                [ -x $(which invoke-rc.d) ] && invoke-rc.d apache2 reload
            fi

        fi

        update_permissions
        migrate_userfiles
    ;;

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

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

db_stop

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

# Automatically added by dh_installdeb/13.11.9
dpkg-maintscript-helper symlink_to_dir /usr/share/nagvis/share/server/core/ext/php-gettext-1.0.12 ../../../../../php/php-php-gettext 1:1.9.25-2\~ -- "$@"
# End automatically added section


exit 0