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[iptables-cn.git] / debian / postinst

diff --git a/debian/postinst b/debian/postinst
index 4ac4576..f61e11e 100755 (executable)
--- a/debian/postinst
+++ b/debian/postinst
@@ -1,48 +1,23 @@
 #!/bin/sh
-# postinst script for bind9-cn
-#
-# 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>
-#        * <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
-#
-
-case "$1" in
-    configure|reconfigure)
-      # continue below
-    ;;
-
-    *)
-        exit 0
-    ;;
-esac
-
-# fix problem with permissions from the old package
-if dpkg --compare-versions "$2" lt "2:1.2.11-4"; then
-    chown -f -Rh root:root /var/lib/iptables /etc/init.d/iptables \
-               /etc/default/iptables >/dev/null 2>&1 || true
-fi
+[ "$1" = "configure" ] || exit 0
+[ "$DEBIAN_SCRIPT_DEBUG" ] && set -vx
 
 # remove old iptables init script
 update-rc.d -f iptables remove >/dev/null 2>&1 || true
+update-rc.d -f iptables-cn remove >/dev/null 2>&1 || true
 
-# check if old default file exists and import it
+# check if old default file exists and delete it
+if [ -e /etc/default/iptables-cn ]; then
+    rm -f /etc/default/iptables-cn
+fi
 if [ -e /etc/default/iptables ]; then
-    mv /etc/default/iptables /etc/default/iptables-cn
+    rm -f /etc/default/iptables
 fi
 
 # check to see if fail2ban is installed
-if dpkg -l fail2ban | grep -q '^.i'; then
+if dpkg-query -f '${Status}' -W fail2ban | grep -q installed; then
     echo "CN: Detected Fail2Ban installation, will remove SSH bruteforce rules by default"
     iptables -D SSH_Brute_Force -m recent ! --rcheck --seconds 90 \
         --hitcount 3 --name SSH --rsource \
@@ -54,28 +29,23 @@ if dpkg -l fail2ban | grep -q '^.i'; then
         -j SSH_Brute_Force >/dev/null 2>&1 || true
     iptables -X SSH_Brute_Force >/dev/null 2>&1 || true
 
-    echo "CN: Saving current Netfilter rules to /var/lib/iptables/active"
-    iptables-save > /var/lib/iptables/active
+    echo "CN: Saving current Netfilter rules to /etc/iptables/rules.v4"
+    iptables-save > /etc/iptables/rules.v4
 else
     # check if there is any default netfilter policy and install default SSH
     # REJECT recent if there is none..
     # also, save current set of rules into active and inactive configuration
-    if [ ! -e /var/lib/iptables/active ]; then
+    if [ ! -e /etc/iptables/rules.v4 ]; then
         if ! iptables-save | grep '^-' >/dev/null; then
             echo "CN: Netfilter rules empty: importing SSH bruteforce rules"
             /usr/share/doc/iptables-cn/examples/ssh-bruteforce \
                 1>/dev/null 2>&1 || true
         fi
-        echo "CN: Saving current Netfilter rules to /var/lib/iptables/active"
-        iptables-save > /var/lib/iptables/active
+        echo "CN: Saving current Netfilter rules to /etc/iptables/rules.v4"
+        iptables-save > /etc/iptables/rules.v4
     fi
 fi
 
-# create inactive
-if [ ! -e /var/lib/iptables/inactive ]; then
-    touch /var/lib/iptables/inactive
-fi
-
 # dh_installdeb will replace this with shell code automatically
 # generated by other debhelper scripts.