Bug#542112: shishi-kdc: Incorrect runlevels in init.d scripts header

[Petter Reinholdtsen]

[Simon Josefsson]
> A patch to implement the preinst/postinst hooks necessary to solve
> upgrades would be really appreciated, as I haven't had time to look
> into that.  I'm not experienced with how to test such a patch, help?

I believe this patch should do the trick, trying to detect the
incorrect state and remove the script to allow debhelper to reinsert
it with the correct runlevel state.

diff -urN ../shishi-0.0.40/debian/shishi-kdc.postinst 
../shishi-0.0.40-pere/debian/shishi-kdc.postinst
--- ../shishi-0.0.40/debian/shishi-kdc.postinst 1970-01-01 01:00:00.000000000 
+0100
+++ ../shishi-0.0.40-pere/debian/shishi-kdc.postinst    2009-10-03 
23:00:34.000000000 +0200
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+set -e
+
+# Recover from incorrect init.d script headers in version 0.0.40-1 and earlier
+if [ "$1" = "configure" ] && dpkg --compare-versions "$2" le "0.0.40-1" \
+   && [ -f /etc/rc3.d/S[0-9][0-9]shishi-kdc ] \
+   && [ -f /etc/rc2.d/K[0-9][0-9]shishi-kdc ] ; then
+    update-rc.d -f shishi-kdc remove
+fi
+
+#DEBHELPER#

To test it, install the package in a sid chroot, see that a stop
symlink is created in /etc/rc2.d/, upgrade to a package fixing the
issue and verify that the symlink in rc2.d/ become a start symlink.

Happy hacking,
-- 
Petter Reinholdtsen