preinst is in psad 2.4.3-1.2.
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 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | #!/bin/sh
#
# Update_conf
#
# This function searchs a key entry in a file and updates its value with the new
# one.
#
# Syntax:
#
# update_conf new_val key conffile
# -> new_val ... : Value to set for the key value
# -> key ....... : Name of the key to be updated
# -> conffile .. : File to search
#
update_conf ()
{
local new_val
local key
local conffile
new_val=$1
key=$2
conffile=$3
cp $conffile $conffile.old
old_val=`awk '$1 == "'$key'" { print $2 }' $conffile`
awk '$1 == "'$key'" { gsub("'$old_val'","'$new_val';",$0); \
print $0 } \
$1 != "'$key'" { print $0 }' \
$conffile.old > $conffile
rm $conffile.old
}
if [ "$1" = "upgrade" -o "$1" = "install" ]; then
# Revert changes added to the configuration file by the postinst script
# if we are upgrading from a version which changed it (#688891)
# or if we are installed with a prior version (#675231)
if [ -n "$2" ] && dpkg --compare-versions 2.2-3 gt $2 ; then
update_conf "_CHANGEME_" "HOSTNAME" "/etc/psad/psad.conf"
fi
fi
if [ "$1" = "upgrade" ]; then
# This script is only intended to fix bug #497574.
# We check for an upgrade from Psad older than 2.1.5 and remove the old
# Psad process if needed.
#
# NB: As some commands can return an exit code other than 0 we do not use
# *set -e* at the beginning.
status=1;
if [ -x "`which dpkg 2>/dev/null`" ]; then
dpkg --compare-versions 2.1.5 gt $2
status=$?
fi
if [ $status = 0 ]; then
echo -n "Removing old Psad process ... "
process_list="psadwatchd kmsgsd psad"
for process in $process_list; do
pkill $process 2>/dev/null
done
echo "Done."
fi
fi
set -e
exit 0
|