#!/bin/sh
#
# This script is called when ppp connects to the network.
#		 
# Here is where we'll start sendmail if needed, and will
# run the queue in either case.
#
# Written By Richard Nelson <cowboy@debian.org>
#
# NOTE: The following lines (without the #) must be in /etc/mail/sendmail.mc:
# include(`/etc/mail/dialup.m4')dnl
# include(`/etc/mail/provider.m4')dnl
#
# ALSO: make sure ipparam is specified somewhere in the ppp options;
#		it will be used as the name of a file in /etc/mail/peers
#
# Exit by default, check for validity before commenting out the next line:
exit 0;

# Define our domain name (from PPP) for sendmail.

# These variables are for the use of the scripts run by run-parts
#PPP_IFACE="$1";
#PPP_TTY="$2";
#PPP_SPEED="$3";
#PPP_LOCAL="$4";
#PPP_REMOTE="$5";
#PPP_IPPARAM="$6";

if [ ! -z "$PPP_LOCAL" ]; then
	addr=$PPP_LOCAL;
	provider=$PPP_IPPARAM;
else
	addr=$1;
	provider=$2;
	fi;

# Determine our fqdn from our ISP
maxloop=20;
cntr=0;
name="";
until (test ! -z "$name");	do
	cntr=$(($cntr+1));
	rev=$(host $addr);
	name=$(echo "$rev" | grep '^Name:' | awk '{print $2}');
	if [ -z "$name" ]; then
		name=${rev##*domain name pointer };
		name=${name%.};
		fi;
	test=$(echo $name | cut -d ' ' -f 1);
	if [ "$name" != "**" ]; then
		break;
	elif (($cntr > $maxloop)); then
		name='';
		break;
		fi;
	done;
echo "addr=$addr,	name=$name";

file="/etc/mail/dialup.m4";
#file="dialup.m4";
if [ ! -z "$name" ]; then
	cat <<-EOT > $file;
		LOCAL_CONFIG
		#------------------------------------------------------------
		#
		# Dynamic updates from $0
		#
		# NOTE: the following line *MUST* be in /etc/mail/sendmail.mc
		dnl include(\`/etc/mail/dialup.m4')dnl
		#
		# Chose one of the following options:
		#	* Add our true hostname as a Virtual Host (we'll accept
		#	  mail for it, but keep our local name for SMTP AUTH, etc)
		dnl C{VirtHost}$name
		#	* Define our true hostname (from our ISP) becomes \$j
		dnl define(\`confDOMAIN_NAME', \`$name')dnl
		#
		# Make sure we accept mail as this name (for bounces, etc)
		Cw$name
		# Add our hostname to class G for genericstable support
		CG$name
		#------------------------------------------------------------
		EOT
	fi;

# Add smarthost information (if any)... But not if provider.m4 is a link !
file="/etc/mail/provider.m4";
#file="provider.m4";
if [ -f /etc/mail/peers/$provider -a ! -L $file ]; then
	cat <<-EOT > $file;
		LOCAL_CONFIG
		#------------------------------------------------------------
		#
		# Dynamic updates from $0
		#
		# NOTE: the following line *MUST* be in /etc/mail/sendmail.mc
		dnl include(\`/etc/mail/provider.m4')dnl
		#
		# Provider information from /etc/mail/peers/$provider
		EOT
	cat /etc/mail/peers/$provider >> $file;
	cat <<-EOT >> $file;
		#------------------------------------------------------------
		EOT
	fi;
#exit 0

# Build a new sendmail.cf from sendmail.mc, including our address.
# NOTE: The following lines (without the #) must be in /etc/mail/sendmail.mc:
# include(`/etc/mail/dialup.m4')dnl
# include(`/etc/mail/provider.m4')dnl
m4 /etc/mail/sendmail.mc \
	> /etc/mail/sendmail.cf.pnew;
chmod 0644 /etc/mail/sendmail.cf.pnew;
chown mail:mail /etc/mail/sendmail.cf.pnew;
mv -f /etc/mail/sendmail.cf.pnew /etc/mail/sendmail.cf;

# Purge any latent host status that might cause us to *NOT* send mail
AM='-Am';
if [ ! -f /usr/share/sendmail/cf/feature/msp.m4 ]; then
	AM='';
	fi;
sendmail $AM -bH -O Timeout.hoststatus=1s;

# Start/reload sendmail as needed
/etc/init.d/sendmail reload;		# may be up, or down

# Process the sendmail queue (background so as to not defer other ip-up work)
runq &