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|
#! /bin/sh
set -e
# Source debconf library.
. /usr/share/debconf/confmodule
db_version 2.0
# We can back up.
db_capb backup
# To make backing up easier, we do a lot of the logic outside the state
# machine.
question1=no
question2=no
question3=no
# Useful system information.
hostname=`hostname --fqdn 2>/dev/null || true`
domainname=`dnsdomainname 2>/dev/null || true`
# Default news server.
if [ ! -s /etc/news/server ]; then
db_get shared/news/server
nntpserver="$RET"
if [ -z "$nntpserver" ]; then
# Try to guess a good value for the NNTP server.
if [ "$domainname" ]; then
nntpserver="news.$domainname"
else
nntpserver="$hostname"
fi
fi
db_set shared/news/server "$nntpserver"
question1=yes
fi
# Default mail name.
if [ ! -s /etc/mailname ]; then
db_get trn4/mail-name
mailname="$RET"
if [ -z "$mailname" ]; then
mailname="$hostname"
fi
db_set trn4/mail-name "$mailname"
question2=yes
elif [ -f /etc/news/whoami ] && [ -f /etc/mailname ]; then
# Help out those with other trn packages or previous versions.
whoami=`head -n 1 /etc/news/whoami | sed 's/[, ].*//'`
mailname=`head -n 1 /etc/mailname | sed 's/[, ].*//'`
if [ "$whoami" != "$mailname" ]; then
db_subst trn4/whoami-change whoami "$whoami"
db_subst trn4/whoami-change mailname "$mailname"
question3=yes
fi
fi
# From here on should be fairly generic; copying and pasting this with
# reference to the above should get you a state machine supporting backing
# up and unused questions.
state=1
action=forward
nextstate ()
{
if [ $action = forward ]; then
state=$(($state + 1))
else
state=$(($state - 1))
fi
}
while [ $state != 0 -a $state != 4 ]; do
case $state in
1)
# "What news server should be used for reading and posting news?"
if [ "$question1" = no ]; then nextstate; continue; fi
db_input medium shared/news/server || true
;;
2)
# "What is your system's mail name?"
if [ "$question2" = no ]; then nextstate; continue; fi
db_input medium trn4/mail-name || true
;;
3)
# "/etc/news/whoami and /etc/mailname differ"
if [ "$question3" = no ]; then nextstate; continue; fi
db_input medium trn4/whoami-change || true
;;
esac
if db_go; then
action=forward
else
action=back
fi
nextstate
done
if [ $state = 0 ]; then
exit 1
else
exit 0
fi
|
