dump1090/debian/dump1090-mutability.postinst

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#!/bin/bash
# postinst script for dump1090
#
# 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
NAME=dump1090-mutability
CONFIGFILE=/etc/default/$NAME
SRCCONFIGFILE=$CONFIGFILE
TEMPLATECONFIG=/usr/share/$NAME/config-template
CRONFILE=/etc/cron.d/$NAME
TEMPLATECRON=/usr/share/$NAME/cron-template
SEDSCRIPT=$CONFIGFILE.sed.tmp
subvar_raw() {
# $1 = config value
# $2 = config var name
if ! grep -Eq "^ *$2=" $SRCCONFIGFILE; then
# if not present in the config file, add it at the end
echo "\$a $2=$1" >> $SEDSCRIPT
else
# otherwise, replace the current value
echo "s@^ *$2=.*@$2=\"$1\"@" >>$SEDSCRIPT
fi
}
subvar() {
# $1 = db var name
# $2 = config var name
db_get $NAME/$1
subvar_raw "$RET" "$2"
}
subvar_yn() {
# $1 = db var name
# $2 = config var name
db_get $NAME/$1
if [ "$RET" = "true" ]; then subvar_raw "yes" "$2"; else subvar_raw "no" "$2"; fi
}
case "$1" in
configure)
. /usr/share/debconf/confmodule
# If we have no config file, start from the template.
# Avoid copying the template to the config file
# before substitution; this leaves an all-blank config
# in place if something fails, which causes problems
# on subsequent reconfiguration.
SKIPLINES=0
if [ ! -e $SRCCONFIGFILE ]; then
SRCCONFIGFILE=$TEMPLATECONFIG
SKIPLINES=4
fi
rm -f $SEDSCRIPT
subvar_yn auto-start START_DUMP1090
subvar run-as-user DUMP1090_USER
subvar log-file LOGFILE
subvar rtlsdr-device DEVICE
subvar rtlsdr-gain GAIN
subvar rtlsdr-ppm PPM
subvar_yn rtlsdr-oversample OVERSAMPLE
subvar_yn decode-fixcrc FIX_CRC
subvar decode-lat LAT
subvar decode-lon LON
subvar decode-max-range MAX_RANGE
subvar net-http-port HTTP_PORT
subvar net-ri-port RAW_INPUT_PORT
subvar net-ro-port RAW_OUTPUT_PORT
subvar net-bi-port BEAST_INPUT_PORT
subvar net-bo-port BEAST_OUTPUT_PORT
subvar net-sbs-port SBS_OUTPUT_PORT
subvar net-heartbeat NET_HEARTBEAT
subvar net-out-size NET_OUTPUT_SIZE
subvar net-out-interval NET_OUTPUT_INTERVAL
subvar net-buffer NET_BUFFER
subvar net-bind-address NET_BIND_ADDRESS
subvar stats-interval STATS_INTERVAL
subvar json-dir JSON_DIR
subvar json-interval JSON_INTERVAL
subvar json-location-accuracy JSON_LOCATION_ACCURACY
subvar_yn log-decoded-messages LOG_DECODED_MESSAGES
subvar extra-args EXTRA_ARGS
tail -n +$SKIPLINES < $SRCCONFIGFILE | sed -f $SEDSCRIPT > $CONFIGFILE.tmp
if [ -e $CONFIGFILE ]; then
chown --reference=$CONFIGFILE $CONFIGFILE.tmp
chmod --reference=$CONFIGFILE $CONFIGFILE.tmp
fi
mv -f $CONFIGFILE.tmp $CONFIGFILE
rm $SEDSCRIPT
db_get $NAME/run-as-user
RUNAS="$RET"
if ! getent passwd "$RUNAS" >/dev/null
then
adduser --system --home /usr/share/$NAME --no-create-home --quiet "$RUNAS"
fi
# create log if missing; change ownership if needed so the cronjob works
db_get $NAME/log-file
touch $RET
chown $RUNAS $RET
# this config file has changed a few times, restart lighttpd to make sure we
# have the latest version
if [ -e /etc/lighttpd/conf-enabled/89-dump1090.conf ]; then
echo "Restarting lighttpd.." >&2
invoke-rc.d lighttpd restart || echo "Warning: lighttpd failed to restart." >&2
fi
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
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#
if [ "$1" = "configure" ]; then db_stop; fi
exit 0