Package: libnss-mdns Version: 0.8-4.1 Severity: important Tags: patch As requested in the README.Debian, here's a patch that mangles nsswitch.conf. It takes care to only touch it on fresh install, upgrade from <= 0.8.4.1, or purge, so if an admin wants to modify or remove the mdns entries, their wishes will be followed. It will also deal with the case where an admin has already customised /etc/nsswitch.conf (adding some mdns entry to it), and avoid overriding their changes in this case.
I've tested this as extensively as I can with all kinds of installation, upgrade, removal, purging, etc scenarios. Note that one of these scenarios (reinstalling after removal) is why it only removes the entries when purged, rather than when it's removed. Otherwise, when it's reinstalled, it wouldn't put them back since there's no way to detect this particular case in the postinst or preinst. Sorry about the embedded perl but it seemed the most robust way to modify the line. I'm flagging this as important since without it, tasksel can't offer debian systems that support zeroconf stuff out of the box, which I really want to see happen, one way or another. -- System Information: Debian Release: testing/unstable APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: i386 (i686) Shell: /bin/sh linked to /bin/bash Kernel: Linux 2.6.17-2-686 Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Versions of packages libnss-mdns depends on: ii libc6 2.3.6.ds1-4 GNU C Library: Shared libraries Versions of packages libnss-mdns recommends: pn zeroconf <none> (no description available) -- no debconf information -- see shy jo
diff --new-file -ur old/nss-mdns-0.8/debian/README.Debian
nss-mdns-0.8/debian/README.Debian
--- old/nss-mdns-0.8/debian/README.Debian 2006-09-22 21:25:56.000000000
-0400
+++ nss-mdns-0.8/debian/README.Debian 2006-09-22 21:48:21.000000000 -0400
@@ -2,19 +2,15 @@
MODIFYING /etc/nsswitch.conf
----------------------------
-Previously the base-files package shipped /etc/nsswitch.conf and specified:
-
-hosts: files dns mdns
-
-However, due to bug#351990, this is no longer the case. /etc/nsswitch.conf
-is now generated post-installation. At this time this package does not
-modify /etc/nsswitch.conf (it will in future -- patches welcome).
-
-This means that, for now, you should modify /etc/nsswitch.conf yourself
-and set the hosts: line to be:
+/etc/nsswitch.conf is modified when this package is installed, to make mdns
+be used. The hosts line is changed to look like this:
hosts: files mdns_minimal dns mdns
+If you prefer a different setup, you can modify this line, and your changes
+will be preserved. If this package is purged, the mdns items will be
+removed from the hosts line.
+
WHAT ABOUT UPSTREAM?
--------------------
diff --new-file -ur old/nss-mdns-0.8/debian/changelog
nss-mdns-0.8/debian/changelog
--- old/nss-mdns-0.8/debian/changelog 2006-09-22 21:25:56.000000000 -0400
+++ nss-mdns-0.8/debian/changelog 2006-09-22 21:37:17.000000000 -0400
@@ -1,3 +1,15 @@
+nss-mdns (0.8-4.2) UNRELEASED; urgency=low
+
+ * Add postinst that will add mdns entries to /etc/nsswitch.conf on new
+ installs and on upgrades from the previous version.
+ * Add postrm to remove mdns entries from /etc/nsswitch.conf when the package
+ is removed.
+ * Local modifications to the file will be preserved accross upgrades.
+ * Depend on base-files 3.1.10 or higher to get a nsswitch.conf that is not a
+ conffile and that doesn't have mdns entries from base-files in it.
+
+ -- Joey Hess <[EMAIL PROTECTED]> Fri, 22 Sep 2006 21:10:25 -0400
+
nss-mdns (0.8-4.1) unstable; urgency=low
* NMU
diff --new-file -ur old/nss-mdns-0.8/debian/control nss-mdns-0.8/debian/control
--- old/nss-mdns-0.8/debian/control 2006-09-22 21:25:56.000000000 -0400
+++ nss-mdns-0.8/debian/control 2006-09-22 21:36:37.000000000 -0400
@@ -10,7 +10,7 @@
Recommends: zeroconf
Suggests: avahi-daemon
Architecture: any
-Depends: ${shlibs:Depends}
+Depends: ${shlibs:Depends}, base-files (>= 3.1.10)
Description: NSS module for Multicast DNS name resolution
nss-mdns is a plugin for the GNU Name Service Switch (NSS) functionality
of the GNU C Library (glibc) providing host name resolution via Multicast
diff --new-file -ur old/nss-mdns-0.8/debian/postinst
nss-mdns-0.8/debian/postinst
--- old/nss-mdns-0.8/debian/postinst 1969-12-31 19:00:00.000000000 -0500
+++ nss-mdns-0.8/debian/postinst 2006-09-22 21:51:53.000000000 -0400
@@ -0,0 +1,22 @@
+#!/bin/sh
+set -e
+#DEBHELPER#
+
+if [ "$1" = configure ] && [ -e /etc/nsswitch.conf ]; then
+ if [ -z "$2" ] || dpkg --compare-versions "$2" le 0.8-4.1; then
+ perl -i -pe '
+ sub insert {
+ my @bits=split(" ", shift);
+ if (grep { $_ eq "mdns_minimal" || $_ eq "mdns"
} @bits) {
+ return join " ", @bits;
+ }
+ @bits = map {
+ $_ eq "files" ? ($_,"mdns_minimal") : $_
+ } @bits;
+ push @bits, "mdns";
+ return join " ", @bits;
+ }
+ s/^(hosts:\s+)(.*)/$1.insert($2)/e;
+ ' /etc/nsswitch.conf
+ fi
+fi
diff --new-file -ur old/nss-mdns-0.8/debian/postrm nss-mdns-0.8/debian/postrm
--- old/nss-mdns-0.8/debian/postrm 1969-12-31 19:00:00.000000000 -0500
+++ nss-mdns-0.8/debian/postrm 2006-09-22 21:48:08.000000000 -0400
@@ -0,0 +1,14 @@
+#!/bin/sh
+set -e
+#DEBHELPER#
+
+if [ "$1" = purge ] && [ -e /etc/nsswitch.conf ]; then
+ perl -i -pe '
+ sub remove {
+ my @bits=grep { $_ ne "mdns_minimal" && $_ ne "mdns" }
+ split(" ", shift);
+ return join " ", @bits;
+ }
+ s/^(hosts:\s+)(.*)/$1.remove($2)/e;
+ ' /etc/nsswitch.conf
+fi
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