#!/bin/sh
# $Id: Rnmail.SH,v 3.0 1992/02/23 21:25:39 davison Trn $
# 
# This software is Copyright 1991 by Stan Barber. 
#
# Permission is hereby granted to copy, reproduce, redistribute or otherwise
# use this software as long as: there is no monetary profit gained
# specifically from the use or reproduction of this software, it is not
# sold, rented, traded or otherwise marketed, and this copyright notice is
# included prominently in any copy made. 
#
# The author make no claims as to the fitness or correctness of this software
# for any use whatsoever, and it is provided as is. Any use of this software
# is at the user's own risk. 
#
#
# syntax: Rnmail -h headerfile [oldart]		or
#         Rnmail destination-list 		or just
#         Rnmail

export PATH || (echo "OOPS, this isn't sh.  Desperation time.  I will feed myself to sh."; sh $0; kill $$)

# System dependencies

mailer="${RNMAILER-/usr/lib/sendmail}"
# if you change this to something that does signatures, take out signature code

# your organization name
orgname="/etc/organization"
# what pager you use--if you have kernal paging use cat
pager="${PAGER-/bin/more}"
# how you derive full names, bsd, usg, or other
nametype="bsd"
# default editor
defeditor="/usr/bin/vi"
# where the non-publics are
case define in
define)  rnlib=`/usr/lib/trn/filexp /usr/lib/trn` ;;
undef)   rnlib="/usr/lib/trn" ;;
esac
# how not to do a newline with echo
n="-n"
c=""

test=test
sed=sed
echo=echo
cat=cat
grep=grep
rm=rm
sleep=sleep
who=

orgname=${NEWSORG-${ORGANIZATION-$orgname}}
dotdir=${DOTDIR-${HOME-$LOGDIR}}
tmpart=$dotdir/.letter
speller=$rnlib/Speller
mail_sig=${MAILSIGNATURE-$dotdir/.mail_sig}

headerfile=""
case $# in
0) ;;
*)  case $1 in
    -h)
	headerfile="$2"
	case $# in
	3) oldart=$3 ;;
	esac
	;;
    esac
    ;;
esac

case $headerfile in
'')
    case $# in
    0)
	to=h
	while $test "X$to" = Xh ; do
	    $echo ""
	    $echo $n "To: $c"
	    read to
	    case $to in
	    h)
		$cat <<'EOH'

Type the net address of those people to whom you wish the message sent.
Additional recipients may be added on the Cc: line when you edit.

Separate multiple addresses with spaces.

EOH
		;;
	    esac
	done
	;;
    *)
	to="$*"
	;;
    esac
    to=`$echo "$to" | $sed 's/  */ /g'`

    title=h
    while $test "X$title" = Xh ; do
	$echo ""
	$echo $n "Title/Subject: $c"
	read title
	case $title in
	h)
	    $cat <<'EOH'

Type the title for your message.  
EOH
	    ;;
	esac
    done

# now build a file with a header for them to edit
    
    case $orgname in
    /*) orgname=`$cat $orgname` ;;
    esac

    $sed -e '/^Reply-To: $/d' > $tmpart <<EOHeader
To: $to
Subject: $title
Organization: $orgname
Reply-To: $REPLYTO
Cc:
Bcc:

EOHeader

    ;;
*)
    $cat < $headerfile  > $tmpart
    ;;
esac


file=h
while $test X$file = Xh ; do
    $echo ""
    $echo $n "Prepared file to include [none]: $c"
    read file
    case $file in
    h)
	$cat <<'EOH'

If you have already produced the body of your message, type the filename
for it here.  If you just want to proceed directly to the editor, type a
RETURN.  In any event, you will be allowed to edit as many times as you
want before you send off the message.
EOH
	;;
    '')
	$echo "" >> $tmpart
	state=edit
	;;
    *)
	$cat $file >>$tmpart
	state=ask
	;;
    esac
done

$echo ""

if $test -r $mail_sig; then
    $echo "-- " >> $tmpart
    $cat $mail_sig >> $tmpart
fi

while : ; do
    case $state in
    edit)
	rescue="$sleep 1; $cat $tmpart >>${HOME-$LOGDIR}/dead.letter ; $echo Message appended to ${HOME-$LOGDIR}/dead.letter ; exit"
	trap "$rescue" 1
	trap : 2
	case "${VISUAL-${EDITOR-}}" in
	'')
	    tmp=h
	    ;;
	*)
	    tmp=''
	    ;;
	esac
	while $test "X$tmp" = Xh ; do
	    $echo $n "Editor [${VISUAL-${EDITOR-$defeditor}}]: $c"
	    read tmp
	    case $tmp in
	    h)
		$cat <<'EOH'

Type a return to get the default editor, or type the name of the editor you
prefer.  The default editor depends on the VISUAL and EDITOR environment
variables.

EOH
		;;
	    '')
		;;
	    *)
		VISUAL=$tmp
		export VISUAL
		;;
	    esac
	done
	${VISUAL-${EDITOR-$defeditor}} $tmpart $oldart
	trap "$rescue" 2
	state=ask
	;;
	
    ask)
	$echo ""
	$echo $n "Check spelling, Send, Abort, Edit, or List? $c"
	read ans

	case $ans in
	[aA]*)
	    state=rescue
	    ;;
	[eE]*)
	    set $ans
	    case $# in
	    2)  VISUAL="$2" ;;
	    esac
	    state=edit
	    ;;
	[lL]*)
	    $pager $tmpart
	    state=ask
	    ;;
	[cC]*|[sS][pP]*)
	    $speller $tmpart
	    state=ask
	    ;;
	[sS]*)
	    state=send
	    ;;
	[hH]*)
	    $cat <<'EOH'

Type c to check the message's spelling, s to send the message, a to abort
and append the message to dead.letter, e to edit the message again, or l
to list the message with your pager.

To invoke an alternate editor, type 'e editor'.
EOH
	esac
	;;
    
    send)
	if $test -f $dotdir/.signature; then
	    $echo $n "Append .signature file? [y] $c"
	    read ans
	    case $ans in
	    ''|y*)
		$echo "-- " >> $tmpart
		cat $dotdir/.signature >> $tmpart
		;;
	    esac
	fi
	case $mailer in
	*sendmail)
	    $mailer -t <$tmpart
	    ;;
# but recmail does not know about Bcc, alas
	*recmail)
	    $mailer <$tmpart
	    ;;
	*)
	    set X `$sed <$tmpart -n -e '/^To:/{' -e 's/To: *//p' -e q -e '}'`
	    shift
	    set X "$@" `$sed <$tmpart -n -e '/^Cc:/{' -e 's/Cc: *//p' -e q -e '}'`
	    shift
	    set X "$@" `$sed <$tmpart -n -e '/^Bcc:/{' -e 's/Bcc: *//p' -e q -e '}'`
	    shift
	    $grep -v "^Bcc:"  <$tmpart | $mailer "$@"
	    ;;
	esac
	case $? in
	0)
	    state=cleanup
	    ;;
	*)
	    state=rescue
	    ;;
	esac
	;;
    rescue)
	$cat $tmpart >> ${HOME-$LOGDIR}/dead.letter
	$echo "Message appended to ${HOME-$LOGDIR}/dead.letter"
	$echo "A copy may be temporarily found in $tmpart"
	exit
	;;
    cleanup)
	case "${MAILRECORD-none}" in
	none)
	    ;;
	*)
	    set X ${USER-${LOGNAME-`$who am i`}} unknown
	    shift
	    $rnlib/mbox.saver $tmpart "." "." 0 0 Pnews $MAILRECORD "From $1 `LANG= date`"
	    if $test $? -eq 0 ; then
		$echo "Message appended to $MAILRECORD"
	    else
		$echo "Cannot append to $MAILRECORD"
	    fi
	    ;;
	esac
	exit
	;;
    esac
done