setup-exim-hidden-service

   1 #!/bin/sh
   2 #
   3 # Configure a machine without exim installed as a mail server receiving
   4 # email using SMTP via Tor.
   5
   6 if dpkg -l exim4-config > /dev/null ; then
   7     echo "******************************************************************"
   8     echo "* Unable to set up SMTP over Tor, exim4-config already installed *"
   9     echo "* Purge the package and try again, or                            *"
  10     echo "* run "dpkg-reconfigure exim4-config" to configure manually.     *"
  11     echo "******************************************************************"
  12     exit 1
  13 fi
  14
  15 append_if_missing() {
  16     file="$1"
  17     string="$2"
  18     if [ -f "$file" ] && grep -xq "$string" "$file" ; then
  19         :
  20     else
  21         (
  22             if [ -f "$file" ] ; then cat "$file" ; fi
  23             echo "$string"
  24         ) > "$file.new" && mv "$file.new" "$file"
  25     fi
  26 }
  27
  28 DEBIAN_FRONTEND=noninteractive apt-get install -y tor
  29 torhsdir=$(awk '/^HiddenServiceDir (.*) *$/ { print $2 }' /etc/tor/torrc)
  30 if [ -e "$torhsdir/hostname" ] ; then
  31    torhsname=$(cat "$torhsdir/hostname")
  32 else
  33     echo "*******************************************************************"
  34     echo "* Added Tor hidden service for SMTP (port 25)                     *"
  35     echo "*******************************************************************"
  36     append_if_missing /etc/tor/torrc \
  37         "HiddenServiceDir /var/lib/tor/hidden_service/"
  38     append_if_missing /etc/tor/torrc \
  39         "HiddenServicePort 25 127.0.0.1:25"
  40     mkdir -p /var/lib/tor/hidden_service
  41     chown debian-tor:debian-tor /var/lib/tor/hidden_service
  42     chmod og-rwx /var/lib/tor/hidden_service
  43     service tor restart
  44     if [ -e "$torhsdir/hostname" ] ; then
  45         torhsname=$(cat "$torhsdir/hostname")
  46     else
  47         echo "error: unable to set up Tor hidden service"
  48         exit 1
  49     fi
  50 fi
  51
  52 cat <<EOF | debconf-set-selections
  53 exim4-config    exim4/dc_eximconfig_configtype  select  internet site; mail is sent and received directly using SMTP
  54 exim4-config    exim4/dc_local_interfaces       string  127.0.0.1 ; ::1
  55 exim4-config    exim4/dc_other_hostnames        string  $torhsname
  56 exim4-config    exim4/use_split_config  boolean true
  57 EOF
  58
  59 DEBIAN_FRONTEND=noninteractive apt-get install -y exim4