postinst is in gwtp 6.08+git20160228+dfsg-1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | #! /bin/sh
# postinst script for gwtp
#
# see: dh_installdeb(1)
set -e
if [ "$1" = "configure" ]; then
	LOGFILE=/var/log/gwtp.log
	GROUP=geneweb
	# Thus all files created there will have www-data as group
	# Otherwise, the CGI could not write them
	if [ ! -f $LOGFILE ]
 	then
	    touch $LOGFILE
	fi
	chown root:$GROUP $LOGFILE
	chmod 660 $LOGFILE
	# Preserve privacy of passwd file
	PASSWD=/etc/geneweb/gwtp/passwd
	if [ -f $PASSWD ]
 	then
	    touch $PASSWD
	fi
	chown root:$GROUP $PASSWD
	chmod 640 $PASSWD
	# The program gwtp has to be setgid 
	# so that it may write in /var/lib/geneweb
	if [ -f /usr/lib/geneweb/gwtp ]
	then
	    chgrp geneweb /usr/lib/geneweb/gwtp
	    chmod 2755 /usr/lib/geneweb/gwtp
	fi
	# The directory for the token file of gwtp
	if [ -d /var/run/gwtp ]
	then
	    chgrp geneweb /var/run/gwtp
	    chmod 770 /var/run/gwtp
	fi
	
fi
 |