Date: Fri, 04 Sep 1998 00:44:21 +0100 From: Brian Somers <brian@Awfulhak.org> To: Dirk-Willem van Gulik <dirk.vangulik@jrc.it> Cc: Marc Slemko <marcs@znep.com>, "Sean O'Connell" <sean@stat.Duke.EDU>, FreeBSD mobile <freebsd-mobile@FreeBSD.ORG> Subject: Re: /etc/pccard_ether Message-ID: <199809032344.AAA06884@woof.lan.awfulhak.org> In-Reply-To: Your message of "Mon, 31 Aug 1998 09:37:05 %2B0200." <Pine.BSF.3.96.980831093556.1827V-100000@elpc36.jrc.it>
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--==_Exmh_-16747307640
Content-Type: text/plain; charset=us-ascii
> On Sun, 30 Aug 1998, Marc Slemko wrote:
>
> > On Sun, 30 Aug 1998, Sean O'Connell wrote:
> >
> > > I realize this probably picking a nit, but I was unable to get
> > > /etc/pccard_ether (in -stable) to work with the pccard_ifconfig
> > > option. I have put together a quickie patch that is pretty
> > > much a direct hack (stolen entirely from the PAO pccard_ether
> > > for 2.2.6-RELEASE by HOSOKAWA, Tatsumi <hosokawa@jp.FreeBSD.org>).
> > > This fixes the handling of properly inserting the ifconfig_$interface
> > > into the script. Otherwise it falls flat on it's face.
>
> > The current design of the pccard_ifconfig line is designed so you have the
> > ifconfig arguments (eg. "inet 207.178.54.41") on it.
>
> Or have it set to DHCP.. But still there is no convenient way to have
> different DHCP domains, on some which you trust '-r -n' setting for
> host and resolv.conf; whereas on others you might have to specifiy a whole
> lot more.
I don't know how much interest there is in this side of things, but
I've been using the enclosed script for some time. It allows you to
specify a list of config files (this should be done in rc.conf), and
when the pccard is attached, the script re-links the config files,
kills the necessary programs and starts others.
The idea is that you make configuration alternatives based either on
the domain or IP number handed out by a dhcp server. You can also
make template files that are s/something/variable/'d at configuration
time.
The script needs polishing - I would have done this before now, but
I'm not sure if it just makes things even more obscure than they
already are.....
dhclient-script.local is called at the end of dhclient-script and
iface-info is a perl script that grabs bits out of the lease file.
> Dw.
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <brian@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
--==_Exmh_-16747307640
Content-Type: text/plain ; name="iface-info"; charset=us-ascii
Content-Description: iface-info
Content-Disposition: attachment; filename="iface-info"
#! /usr/local/bin/perl
die "Usage: iface-info iface\n" if ($#ARGV != 0);
open (IFCONFIG, "ifconfig $ARGV[0] |") || die "Cannot execute ifconfig\n";
while (<IFCONFIG>) {
$input = $_;
foreach $var ("mtu", "inet", "netmask", "broadcast", "ether") {
$_ = $input;
chop;
if (s/.*[ ]($var) ([^ ]*).*/$2/) {
$assign = $var;
$n = 0;
while (${$assign} ne "") {
$n++;
$assign = "$var$n";
}
${$assign} = $_;
print "$assign=$_\n";
if ($var eq "netmask") {
$bit = 0x80000000;
$mask = eval $_;
$bits = 0;
while ($bit & $mask) {
$bits++;
$bit >>= 1;
}
while ($bit && !($bit & $mask)) {
$bit >>= 1;
}
$assign = $n ? "$n" : "";
print "netmask_bits$assign=$bits\n" unless $bit;
}
}
}
}
close IFCONFIG;
exit 0 unless $inet;
open (LEASES, "/var/db/dhclient.leases") || exit 0;
while (<LEASES>) {
$look = 1 if /\{/;
if (/\}/) {
last if $done;
$look = $found = 0;
}
next unless $look;
$found = 1 if /fixed-address $inet/;
next unless $found;
if (s/.*[ ]routers[ ]*(.*);.*/defaultroute=$1/) {
print;
$done = 1;
}
if (s/.*[ ]domain-name-servers[ ]*(.*);.*/$1/) {
($nameserver1, $nameserver2) = split(/,/);
print "nameserver1=$nameserver1\n";
print "nameserver2=$nameserver2";
$done = 1;
}
if (s/.*[ ]domain-name[ ]*\"(.*)\".*/domain=$1/) {
print;
$done = 1;
}
}
close LEASES;
--==_Exmh_-16747307640
Content-Type: text/plain ; name="dhclient-script.local"; charset=us-ascii
Content-Description: dhclient-script.local
Content-Disposition: attachment; filename="dhclient-script.local"
#! /bin/sh
#
# Do some post-configuration setup stuff
#
PATH=/usr/local/bin:$PATH
# link these files
pccard_files="/etc/profile /etc/printcap /usr/local/etc/smb.conf
/etc/namedb/named.conf /home/brian/.netscape/preferences.js"
# Kill these progs
pccard_kill="smbd nmbd arpwatch rwhod"
pccard_restart="named"
# startup script dirs.
pccard_startup="/usr/local/etc/rc.d /usr/X11R6/etc/rc.d"
ip=$check_ip_address
domain=$check_domain_name
test -z "$ip" -a ."$new_ip_address" != ."$old_ip_address" &&
ip=$new_ip_address domain=$new_domain_name
eval $(iface-info $interface) # What's currently configured ?
[ "$inet" != "$ip" ] && exit 0 # We'll be called again...
generate() {
# Generate from a template (.tmpl) file
sed -e 's/dhclient-inet/'$inet/ \
-e 's/dhclient-netmask-bits/'$netmask_bits/ \
-e 's/dhclient-netmask/'$netmask/ \
-e 's/dhclient-broadcast/'$broadcast/ \
-e 's/dhclient-mtu/'$mtu/ \
-e 's/dhclient-ether/'$ether/ \
-e 's/dhclient-defaultroute/'$defaultroute/ \
-e 's/dhclient-nameserver1/'$nameserver1/ \
-e 's/dhclient-nameserver2/'$nameserver2/ \
-e 's/dhclient-domain/'$domain/ \
$1 >$2
}
case "$ip" in
"") ;;
*) if [ -n "$pccard_files" ]; then
if [ -z "$domain" ]; then
logger -p local0.notice "dhcp: $interface: $ip: No leased domain !"
exit 0
fi
keepgoing=TRUE
for f in $pccard_files; do
keepgoing=FALSE
for file in $f.$domain.tmpl $f.$domain $f.$ip $f.tmpl
do
if [ -f $file ]; then
keepgoing=TRUE
break
fi
done
if [ $keepgoing = FALSE ]; then
echo "$f: Missing template file" >&2
break
fi
done
if [ $keepgoing = TRUE ]; then
logger -p local0.notice "dhcp: Config $interface for $ip ($domain)"
killall $(echo $pccard_kill)
for f in $pccard_files; do
rm -f $f
if [ -f $f.$domain.tmpl ]; then
generate $f.$domain.tmpl $f
elif [ -f $f.$domain ]; then
ln -s ${f##*/}.$domain $f
elif [ -f $f.$ip ]; then
ln -s ${f##*/}.$ip $f
else
generate $f.tmpl $f
fi
done
killall -HUP $(echo $pccard_restart)
sleep 1
for dir in $pccard_startup; do
if [ -d $dir ]; then
for f in $dir/*.dhclient; do
[ -x $f ] && $f $ip $domain
done
fi
done
else
logger -p local0.notice "dhcp: $interface: $ip: Unknown config ($f) !"
fi
fi
;;
esac
exit 0
--==_Exmh_-16747307640--
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