#! /bin/sh
##
# fakesendmail - A fake sendmail program used by the nmh test suite
#                to test the sendmail/smtp and sendmail/pipe mts
#                methods.
#
# This code is Copyright (c) 2012, by the authors of nmh.  See the
# COPYRIGHT file in the root or documentation directory of the nmh
# distribution for complete copyright information.
##

if [ "$MH_TEST_DIR"x = x ]; then
  printf '%s is intended for use only by the nmh test suite\n' "$0"
  exit 1
fi

#### Puts message on stdin in a drop that the test knows about.
deliver="$MH_LIB_DIR/rcvpack $MH_TEST_DIR/Mail/fakesendmail.mbox"

found_dasht=0
for arg in "$@"; do
  [ "$arg" = -t ]  &&  found_dasht=1
done

if [ $found_dasht -eq 0 ]; then
  # sendmail/smtp
  msg=
  datamode=0

  printf '%s\n' "220 If it can't be done in Bourne shell it's not worth doing"
  while read line; do
    #### Strip off carriage returns, they confuse the pattern matching.
    line=`printf %s "$line" | tr -d '\r'`

    case "$line" in
      DATA) printf '354 do tell\n'; datamode=1 ;;
         .) printf '250 done\n'; datamode=0;
            printf %s "$msg" | $deliver; msg= ;;
      QUIT) printf '221 byenow\n'; break ;;
         *) [ $datamode -eq 1 ]  &&  msg="${msg}${line}
"  ||  printf '250 OK\n'
    esac
  done
else
  # sendmail/pipe

  #### This will delete any lines in the message body that start with Bcc:!
  sed -e '/^[Bb][Cc][Cc]:/d' | $deliver
fi