262 lines
6.7 KiB
Perl
262 lines
6.7 KiB
Perl
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#!/usr/local/bin/perl
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# httpdc
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# a completely useless tool - a dc desk calculator in the url
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# 2.3.+.dc.foor.bar will print out the html page
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# "5"
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#
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# this code assumes that a real server lurks behind port 8080 on the local host
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#
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use Socket;
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# the port I listen to
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$port=80;
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# the port I redirect all other requests to
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$http_port = 80 ;
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$AF_INET = 2 ;
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$SOCK_STREAM = 1 ;
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$sockaddr = 'S n a4 x8';
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($name, $aliases, $proto) = getprotobyname('tcp');
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$this = pack($sockaddr, $AF_INET, $port, "\0\0\0\0");
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socket(S, $AF_INET, $SOCK_STREAM, $proto) || die "socket: $!";
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setsockopt(S, SOL_SOCKET, SO_REUSEADDR,1) ;
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bind(S,$this) || die "Bind: $!";
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listen(S,5) || die "Connect: $!";
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my $runas = 'nobody';
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# Change effective id
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$> = getpwnam($runas);
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use Tie::Syslog;
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my $x=tie *LOG, 'Tie::Syslog', 'daemon.info','RPHTTPD','pid','unix';
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#open(LOG,">>/root/RPNS/httpdc.log");
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print(LOG "RPHTTPD Server Listening on port $port\n");
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select(S); $|=1;
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select(LOG); $|=1;
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select(STDOUT);
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for ($con = 1 ; ; $con++) {
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sleep 1;
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($addr = accept(NS,S)) || die $!;
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if (($child = fork()) == 0) {
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# &open_slave() ;
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# if (($child = fork()) == 0) {
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# select(NS); $|=1; select(STDOUT);
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# read_slave() ;
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# close(NS) ;
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# exit ;
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# }
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select(NS); $|=1; select(STDOUT);
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$host = "" ;
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while ($line = <NS>) {
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# print (LOG "LINE: $line\n");
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if ($line =~ /^GET\s+(\S*)/) {
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$url = $1 ;
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}
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elsif ($line =~ /^Host:\s+(.*)$/) {
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$host = $1 ;
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$host =~ s/\r// ;
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$host =~ s/\n// ;
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}
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push(@lines,$line) ;
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if ($line =~ /^\r*\n*$/) {
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if ($host =~ /^(.*)\.rp\./i) {
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process_host($host, $text);
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close (NS);
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}
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else {
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# &write_slave() ;
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}
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}
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}
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}else{
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close(NS);
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}
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# &close_slave() ;
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close(NS) ;
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}
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exit ;
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############################
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sub process_host {
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my($host,$text) = @_ ;
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@types = ("text/html; charset=ISO-8859-1","text/plain;
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charset=ISO-8859-1","application/pdf","application/ps") ;
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@gmt = gmtime(time()) ;
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$day = ("Sun","Mon","Tue","Wed","Thu","Fri","Sat")[$gmt[6]];
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$mon =
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("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec")[$gmt[4]];
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$gmt[5] += 1900 ;
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$datestr = sprintf("%s, %02d %s %d %02d:%02d:%02d
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GMT",$day,$gmt[3],$mon,$gmt[5],$gmt[2],$gmt[1],$gmt[0]) ;
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# print(LOG "file: $host -> $text\n") ;
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if ($host =~ /^(.*)\.rp\./i) {
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$dcargs = $1;
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$dcargs =~ tr/A-Z/a-z/ ;
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$dcargs =~ s/\;// ;
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$dcargs =~ s/\'// ;
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$dcargs =~ s/\"// ;
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$dcargs =~ s/\./ / ;
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$dcargs .= " p" ;
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$infile = "/tmp/dci.$$" ;
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open(I,">$infile") ;
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print(I "$dcargs\n") ;
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close(I) ;
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$outfile = "/tmp/dco.$$" ;
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system("/usr/bin/dc <$infile >$outfile") ;
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if (!(-s $outfile)) {
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open(O,">$outfile") ;
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print(O "Beats me. Try using your toes as well as your fingers.\n") ;
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close(O) ;
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}
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$fout = "/tmp/dco.$$.html" ;
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open(FO,">$fout");
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print(FO "<html><head><title>DC</title></head>") ;
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print(FO "<body BGCOLOR=\"\#FFFFFF\">\n") ;
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print(FO "<pre>\n") ;
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open(I,"$outfile") ;
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while ($line = <I>) { print(FO $line) ; }
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close(I) ;
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print(FO "</pre></body></html>\n") ;
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close(FO) ;
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$size = -s $fout ;
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print(NS "HTTP/1.1 200 OK\n") ;
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print(NS "Date: $datestr\n") ;
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print(NS "Server: The Bert reverse polish server\n") ;
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print(NS "Accept-Ranges: bytes\n") ;
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print(NS "Content-Length: $size\n") ;
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print(NS "Keep-Alive: timeout=15, max=100\n") ;
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print(NS "Connection: Keep-Alive\n") ;
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print(NS "Context-Type: $types[$text]\n\n") ;
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# print(LOG "HTTP/1.1 200 OK\n") ;
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# print(LOG "Date: $datestr\n") ;
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# print(LOG "Server: The Bert reverse polish server\n") ;
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# print(LOG "Accept-Ranges: bytes\n") ;
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# print(LOG "Content-Length: $size\n") ;
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# print(LOG "Keep-Alive: timeout=15, max=100\n") ;
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# print(LOG "Connection: Keep-Alive\n") ;
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# print(LOG "Context-Type: $types[$text]\n\n") ;
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open(I,"$fout") ;
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while ($buffer = <I>) {
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print(NS $buffer) ;
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# print(LOG $buffer) ;
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}
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print(NS "\n") ;
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unlink($infile) ;
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unlink($outfile) ;
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unlink($fout) ;
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}
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else {
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$fout = "/tmp/404.$$.txt" ;
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open(FO,">$fout");
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print(FO "<HTML><HEAD>\n") ;
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print(FO "<TITLE>NO CLUE</TITLE>\n") ;
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print(FO "</HEAD><BODY>\n") ;
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print(FO "<H1>Huh?</H1>\n") ;
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print(FO "Beats me. Try using your toes as well as your fingers.<p>\n") ;
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print(FO "</BODY></HTML>\n") ;
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close(FO) ;
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$size = -s $fout ;
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$fulf = $fout ;
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print(NS "HTTP/1.1 200 OK\n") ;
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print(NS "Date: $datestr\n") ;
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print(NS "Server: The Bert reverse polish server\n") ;
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print(NS "Content-Length: $size\n") ;
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print(NS "Keep-Alive: timeout=15, max=100\n") ;
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print(NS "Connection: Keep-Alive\n") ;
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print(NS "Content-Type: text/html; charset=iso-8859-1\n\n") ;
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# print(LOG "HTTP/1.1 200 OK\n") ;
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# print(LOG "Date: $datestr\n") ;
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# print(LOG "Server: The Bert reverse polish server\n") ;
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# print(LOG "Content-Length: $size\n") ;
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# print(LOG "Keep-Alive: timeout=15, max=100\n") ;
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# print(LOG "Connection: Keep-Alive\n") ;
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# print(LOG "Content-Type: text/html; charset=iso-8859-1\n\n") ;
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open(I,"$fulf") ;
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while ($buffer = <I>) { print(NS $buffer) ; }
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unlink($fulf) ;
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}
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}
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sub open_slave {
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chop($http_hostname = `bert.secret-wg.org`);
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$http_defhost = $http_hostname ;
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$HTTP_AF_INET = 2 ;
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$HTTP_SOCK_STREAM = 1 ;
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$http_sockaddr = 'S n a4 x8';
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($http_name, $http_aliases, $http_proto) = getprotobyname('tcp');
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($http_name, $http_aliases, $http_type, $http_len, $http_thisaddr) =
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gethostbyname($http_hostname);
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(@http_v) = unpack('C4', $http_thisaddr);
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($http_name, $http_aliases, $http_type, $http_len, $http_thataddr) =
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gethostbyname($http_defhost);
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(@http_w) = unpack('C4', $http_thataddr);
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$http_this = pack($http_sockaddr, $HTTP_AF_INET, 0, $http_thisaddr);
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$http_that = pack($http_sockaddr, $HTTP_AF_INET, $http_port,
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$http_thataddr);
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socket(H, $HTTP_AF_INET, $HTTP_SOCK_STREAM, $http_proto) || die "socket:
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$!";
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bind(H, $http_this) || die "bind: $!";
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connect(H, $http_that) || die "connect: $!";
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select(H) ; $| = 1 ; select(STDOUT);
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}
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sub read_slave {
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while ($len = sysread(H, $buffer,16384)) {
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print(NS $buffer);
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print(LOG "$con:<-\t$buffer");
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$offset = 0 ;
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while($len) {
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$written = syswrite(NS, $buffer, $len, $offset);
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$offset += $written ;
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$len -= $written ;
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}
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}
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close(H) ;
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}
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sub write_slave {
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select(H); $|=1; select(STDOUT);
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foreach $line (@lines) {
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print(LOG "$con:->\t$line");
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print(H $line) ;
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}
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$#lines = -1 ;
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}
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sub close_slave {
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if ($#lines >= 0) {
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&write_slave() ;
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}
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close(H) ;
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}
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