showextern

linux下的E_MAIL客户端源码

#!/bin/sh

# Copyright (c) 1996 H&L Software, Inc.
# Copyright (c) 1994 HaL Computer Systems, Inc.
# Derived from C-shell version, originally from Bellcore
#
# Copyright (c) 1991 Bell Communications Research, Inc. (Bellcore)
# 
# Permission to use, copy, modify, and distribute this material 
# for any purpose and without fee is hereby granted, provided 
# that the above copyright notice and this permission notice 
# appear in all copies, and that the name of Bellcore not be 
# used in advertising or publicity pertaining to this 
# material without the specific, prior written permission 
# of an authorized representative of Bellcore.  BELLCORE 
# MAKES NO REPRESENTATIONS ABOUT THE ACCURACY OR SUITABILITY 
# OF THIS MATERIAL FOR ANY PURPOSE.  IT IS PROVIDED "AS IS", 
# WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES.
# 

if [ $# -lt 3 ]; then
    echo "Usage: showextern NEWFILE access-type name site directory mode ruser rpwd server"
    exit 1
fi
#echo $0 $*
NEWFILE=$1
ATYPE=`echo $2 | tr 'A-Z' 'a-z'`
NAME=$3
SITE=$4
DIR=$5
MODE=$6
USERNAME=$7
PASS=$8
SERVER=$9

#
# the password has been translated so it doesn't accidently show up in
#    clear text.  This 'tr' reverses the translation.  The second form of
#    tr is used on SVR4 systems.
#
TR1="tr '\060-\172\050-\057' '\050-\172'"
TR2="tr '[\060-\172][\050-\057]' '[\050-\172]'"

#
# If TR1 doesn't change the word, we need to used TR2
#
test `echo "hello" | $TR1` = hello \
	&& PASS=`echo $PASS | $TR2` \
	|| PASS=`echo $PASS | $TR1`

case "$ATYPE" in

   ftp | anon-ftp)
      if [ "$ATYPE" = "anon-ftp" ]; then
	 USERNAME=anonymous
	 HNAME=`hostname`
	 DNAME=`domainname`
	 PASS=`whoami`
	 if [ ! -z $HNAME ]
	 then
	    PASS=${PASS}@$HNAME
	    if [ ! -z $DNAME -a "$DNAME" != "none" -a "$DNAME" != "(none)" ]
	    then
	       PASS=${PASS}.$DNAME
	    fi
	    elif [ ! -z $DNAME ]
	    then
	       PASS=${PASS}@$DNAME
	    fi
	fi
	
	# We assumed that if an "rftp" exists, it is the version of ftp
	# used to get through a firewall using a proxy server. However,
	# there are other rftp programs out there, so this seems to 
	# cause more trouble than it's worth.

	#T=`type rftp 2>&1 | cut -d' ' -f2`
	#if [ "$T" = "is" ]; then
		#FTPCMD=rftp
	#else
		FTPCMD=ftp
	#fi

	if [ "$DIR" = "" ]; then
		DIRCMD=""
	else
		DIRCMD="cd $DIR"
	fi
	if [ "$MODE" = "" ]; then
		MODECMD=""
	else
		MODECMD="type $MODE"
	fi

	$FTPCMD -n <<!
open $SITE
user $USERNAME $PASS
$DIRCMD
$MODECMD
get $NAME $NEWFILE
quit
!
	if [ ! -f $NEWFILE ]; then
	    exit 1
	fi
	;;

   tftp)
	if [ "$DIR" = "" ]; then
		NEWNAME=$NAME
	else
		NEWNAME="$DIR/$NAME"
	fi

	tftp <<!
connect $SITE
$MODE
get $NEWNAME $NEWFILE
quit
!
	if [ ! -f $NEWFILE ]; then
	    exit 1
	fi
	;;

   mail-server)  # A very special case
	SUBJECT="Automated Mail Server Request"
	NEWERFILE="$NEWFILE.msg"
	echo "Subject: $SUBJECT" > $NEWERFILE
	echo "To: $SERVER" >> $NEWERFILE
	echo "" >> $NEWERFILE
	cat $NEWFILE >> $NEWERFILE
	/usr/lib/sendmail -t < $NEWERFILE
	if [ $? -ne 0 ]; then
	    rm -f $NEWERFILE
	    exit 1
	fi
	rm -f $NEWERFILE
	exit 0
	;;

    *)
	echo "Unknown access type: $ATYPE"
	exit 1
	;;
esac

exit 0