#!/bin/bash

MAILER="cantfind"

for executable in sendmail msmtp
do
  for prefix in /usr/bin /usr/sbin /bin /sbin
  do
    [ "${MAILER}" == "cantfind" ] && [ -x ${prefix}/${executable} ] && MAILER="${prefix}/${executable}"
  done
done

if [ "${MAILER}" == "cantfind" ]
then
  >&2 echo 'ERROR: Can\'t find suitable mailer.'
  exit 1
fi

(
  . /etc/sendmailadvanced.conf

  tos=""
  while read s
  do
    echo "${s}"
    if [ "${s:0:3}" == "To:" ] || [ "${s:0:3}" == "Cc:" ]
    then
      tos="${tos} ${s:4}"
    fi
    if [ "${s:0:8}" == "Subject:" ]
    then
      break
    fi
  done
  hashcash -b ${hashcash_bits} -Xm ${tos}
  while read s
  do
    echo "${s}"
    if [ "${s}" == "" ]
    then
      break
    fi
  done
  (
    body_header_hook $@
    cat
    body_footer_hook $@
  ) | gpg -e -a -s -r ${gpg_recipient}
) | ${MAILER} -t