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OS/2 Shareware BBS: 35 Internet
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35-Internet.zip
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sockperl.zip
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eval_cry.nf
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1995-03-19
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3KB
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133 lines
# os/2 server built to run simple perl scripts from a des
# encrypted socket connection. Hacked from the 'Camel book'
# server and client scripts. Modifications are mostly to
# deal with 'fork()'ed processes not inheriting socket handles
# (hence the use of a second socket address for the reply!)
# Use of des is just for an interesting example, and to test
# use of piped io.
#print "tell me a secret to decrypt the socket: \033[47m";
#$sec=(<>);
#print "\033[44m";
($port) = @ARGV;
$port = 12345678 unless $port;
$port2 = 12345679 ;
$AF_INET = 2;
$SOCK_STREAM = 1;
$sockaddr = 'S n a4 x8';
($name, $aliases, $proto) = getprotobyname('tcp');
if ($port !~ /^\d+$/) {
($name, $aliases, $port) = getservbyport($port, 'tcp');
}
print "Port = $port\n";
$this = pack($sockaddr, $AF_INET, $port, "\0\0\0\0");
select(NS); $| = 1; select (stdout);
socket(S, $AF_INET, $SOCK_STREAM, $proto) || die "socket: $!";
bind(S,$this) || die "bind: $!";
listen(S,5) || die "connect: $!";
select(S); $| = 1; select(stdout);
$con = 0;
print "Listening for connection 1....\n";
#for(;;) {
($addr = accept(NS,S)) || die $!;
$con++;
# if (($child[$con] = fork()) == 0) {
print "accept ok\n";
($af,$port,$inetaddr) = unpack($sockaddr,$addr);
@inetaddr = unpack('C4',$inetaddr);
print "$con: $af $port @inetaddr\n";
@cyphert = <NS>;
open (C_TEMP, ">$ENV{TMP}/tmp$$") || warn "cant open TEMP ";
print C_TEMP @cyphert;
close C_TEMP;
# while (<NS>) {
# print SPIPE "$_";
# }
print STDERR "$port \n";
open (SPIPE, "des -dk test $ENV{TMP}/tmp$$ |");
@clear = <SPIPE>;
close SPIPE;
$des_return = $?;
unlink "$ENV{TMP}/tmp$$" || warn "couldn't unlink cypher_temp $!";
#Call back the client and indicate result
chop($hostname = `hostname`);
($name,$aliases,$proto) = getprotobyname('tcp');
($name,$aliases,$port2) = getservbyname($port2,'tcp')
unless $port2 =~ /^\d+$/;;
($name,$aliases,$type,$len,$thisaddr)=gethostbyname($hostname);
($name,$aliases,$type,$len,$thataddr) = gethostbyname($them);
$this2 = pack($sockaddr, $AF_INET, 0, $thisaddr2);
$that = pack($sockaddr, $AF_INET, $port2, $thataddr);
# Make the socket filehandle.
if (socket(S2, $AF_INET, $SOCK_STREAM, $proto)) {
print "socket ok\n";
}
else {
warn $!;
}
# Give the socket an address.
if (bind(S2, $this2)) {
print "bind ok\n";
}
else {
warn $!;
}
# Call up the server.
if (connect(S2,$that)) {
print "connect ok\n";
}
else {
die $!;
}
# Set socket to be command buffered.
select(S2); $| = 1; select(STDOUT);
# Avoid deadlock by forking.
#if($child != fork) {
if ($des_return==0){
print S2 "succeeded !!\n";
}
else {
printf S2 "failed \007 \007 %12.8lx !!\n", $des_return;
}
close(NS);
$rslt=0;
if ($des_return==0){
eval $line;
}
close(S2);