1 files changed, 39 insertions, 0 deletions
diff --git a/debian/exim4-config.preinst b/debian/exim4-config.preinst
new file mode 100644
index 0000000..e30e4df
--- /dev/null
+++ b/debian/exim4-config.preinst
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+set -e
+
+if [ -n "$EX4DEBUG" ]; then
+  echo "now debugging $0 $@"
+  set -x
+fi
+
+# Remove a no-longer used conffile
+# Solution and code taken from http://wiki.debian.org/DpkgConffileHandling
+# and "beautified" (hopefully not broken)
+rm_conffile() {
+    PKGNAME="$1"
+    CONFFILE="$2"
+
+    if [ -e "$CONFFILE" ]; then
+        md5sum="$(md5sum "$CONFFILE" | sed -e "s/ .*//")"
+        old_md5sum="$(dpkg-query -W -f='${Conffiles}' $PKGNAME | sed -n -e "\' $CONFFILE'{s/ obsolete$//;s/.* //;p;}")"
+        if [ "$md5sum" != "$old_md5sum" ]; then
+            echo "Obsolete conffile $CONFFILE has been modified by you."
+            echo "Saving as $CONFFILE.dpkg-bak ..."
+            mv -f "$CONFFILE" "$CONFFILE".dpkg-bak
+        else
+            echo "Removing obsolete conffile $CONFFILE ..."
+            rm -f "$CONFFILE"
+        fi
+    fi
+}
+
+case "$1" in
+install|upgrade)
+    if dpkg --compare-versions "$2" lt "4.68-1"; then
+       rm_conffile exim4-config "/etc/exim4/conf.d/acl/20_exim4-config_whitelist_local_deny"
+       rm_conffile exim4-config "/etc/exim4/conf.d/router/250_exim4-config_lowuid"
+    fi
+esac
+
+#DEBHELPER#