ask_for_key

一套客户/服务器模式的备份系统代码,跨平台,支持linux,AIX, IRIX, FreeBSD, Digital Unix (OSF1), Solaris and HP-UX.

#!/bin/sh
################### Start of $RCSfile: ask_for_key,v $ ##################
#
# $Source: /home/alb/afbackup/afbackup-3.3.8.1/RCS/ask_for_key,v $
# $Id: ask_for_key,v 1.3 2004/07/08 20:34:42 alb Exp alb $
# $Date: 2004/07/08 20:34:42 $
# $Author: alb $
#
#
####### description ################################################
#
#
#
####################################################################

echo_n(){
  echo "$@" | awk '{printf "%s",$0}'
}

echo "Please enter at least 5 characters as a unique"
echo "key for some encryption used for authenticating"
echo "the client to the server."
k=" "
while [ `echo "$k"|wc -c` -lt 5 ] ; do
  echo " "
  echo_n "Key: "
  k=`awk '{print;exit 0}'`
  if [ `echo "$k"|wc -c` -lt 5 ] ; then
    echo " "
    echo "Please enter AT LEAST FIVE characters."
  fi
done

h=`echo "$k" | od -b | head -1 | awk '{ s=0; for(i=0;i<=4;i++){ b=0; for(j=1;j<=3;j++){ b=(b*8)+substr($(i+2),j,1)} s=((s*95)+b-32)%2147483647} printf "%x\n",s}'`

/bin/rm -f cryptkey.h
echo '/* autocreated by $RCSfile: ask_for_key,v $ */' > cryptkey.h
echo ' ' >> cryptkey.h

echo "#define	ACCESSKEY	0x$h" >> cryptkey.h

k=`echo "$k"|sed 's#\\\\#\\\\\\\\#g'|sed 's#"#\\\\"#g'`
echo "#define	ACCESSKEYSTRING	"'"'"$k"'"' >> cryptkey.h