diff options
Diffstat (limited to 'debian/examples/dhcp3/dhclient-exit-hooks.d/sendmail.1.old')
| -rw-r--r-- | debian/examples/dhcp3/dhclient-exit-hooks.d/sendmail.1.old | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/debian/examples/dhcp3/dhclient-exit-hooks.d/sendmail.1.old b/debian/examples/dhcp3/dhclient-exit-hooks.d/sendmail.1.old new file mode 100644 index 0000000..ba6b98c --- /dev/null +++ b/debian/examples/dhcp3/dhclient-exit-hooks.d/sendmail.1.old @@ -0,0 +1,158 @@ +#!/bin/sh +# +# This script is called when dhcp 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 +# +# NOTE: The dhcp DNS name is used as the peer name in /etc/mail/peers. +# +# Exit by default, check for validity before commenting out the next line: +exit 0; + +provider_m4='/etc/mail/provider.m4'; +#provider_m4='provider.m4'; +dialup_m4='/etc/mail/dialup.m4'; +#dialup_m4='dialup.m4'; + +update_sendmail() { + # Build a new sendmail.cf from sendmail.mc, including our address. + 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 & + }; + +update_provider() { + # Add smarthost information (if any)... + # But not if provider.m4 is a link ! + local domain; + domain="$1"; + if [ -f /etc/mail/peers/$domain -a ! -L $provider_m4 ]; then + cat <<-EOT > $provider_m4; + LOCAL_CONFIG + #------------------------------------------------------------ + # + # Dynamic provider updates from $0 + # + # NOTE: the following line *MUST* be in /etc/mail/sendmail.mc + dnl include(\`/etc/mail/provider.m4')dnl + # + # Provider information from /etc/mail/peers/$domain + EOT + cat /etc/mail/peers/$domain >> $provider_m4; + cat <<-EOT >> $provider_m4; + #------------------------------------------------------------ + EOT + fi; + }; + +find_host() { + # Determine our fqdn from our ISP + local addr; + addr="$1"; + maxloop=20; + cntr=0; + host=''; + until (test ! -z "$host"); do + cntr=$(($cntr+1)); + rev=$(host $addr); + host=$(echo "$rev" | grep '^Name:' | awk '{print $2}'); + if [ -z "$host" ]; then + host=${rev##*domain name pointer }; + host=${host%.}; + fi; + test=$(echo $host | cut -d ' ' -f 1); + if [ "$host" != "**" ]; then + break; + elif (($cntr > $maxloop)); then + host=''; + break; + fi; + done; + echo "addr=$addr, name=$host"; + }; + +update_host() { + local host ip; + ip="$1"; + find_host "$ip"; + if [ ! -z "$host" ]; then + cat <<-EOT > $dialup_m4; + LOCAL_CONFIG + #------------------------------------------------------------ + # + # Dynamic host/ip updates from $0 + # + # NOTE: the following line *MUST* be in /etc/mail/sendmail.mc + dnl include(\`/etc/mail/dialup.m4')dnl + # + # Chose one of the following two options: + # * Add our true hostname as a Virtual Host (we'll accept + # mail for it, but keep our local name for SMTP AUTH, etc) + C{VirtHost}$host + # + # * Define our true hostname (from our ISP) - becomes \$j + dnl define(\`confDOMAIN_NAME', \`$host')dnl + # + # Make sure we accept mail as this name (for bounces, etc) + Cw$host + Cw$ip + # Add our hostname to class G for genericstable support + CG$host + #------------------------------------------------------------ + EOT + fi; + }; + +# No need to continue if we're called with an unsupported option +if [ "$reason" != BOUND ] && [ "$reason" != RENEW ] \ + && [ "$reason" != REBIND ] && [ "$reason" != REBOOT ] \ + && [ "$reason" != EXPIRE ] && [ "$reason" != FAIL ] + then + return; + fi; + +# Flag to denote changed have been made; +changed=0; + +# If the domain name has changed, update the provider information +if [ "$new_domain_name" != "$old_domain_name" ]; then + changed=1; + update_provider "$new_domain_name"; + fi; + +# If the ip address has changed, update the host information +if [ "$new_ip_address" != "$oldnew_ip_address" ]; then + changed=1; + update_host "$new_ip_address"; + fi; + +# If anything has been changed, update sendmail.cf and reload +if [ $changed -eq 1 ]; then + update_sendmail; + fi; + +exit 0; + |