html/cgi-bin/speed.cgi

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2007  Michael Tremer & Christian Schmidt                      #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 ###############################################################################
  23 # functions copied from general-functions.pl for speed improvement because    #
  24 # loading and initializing the whole general-functions.pl every second create #
  25 # high system load                                                            #
  26 ###########################################OA##################################
  27 #
  28 # Returns the output of a shell command
  29 sub General__system_output($) {
  30     my @command = @_;
  31     my $pid;
  32     my @output = ();
  33
  34     unless ($pid = open(OUTPUT, "-|")) {
  35             open(STDERR, ">&STDOUT");
  36             exec { ${command[0]} } @command;
  37             die "Could not execute @command: $!";
  38     }
  39
  40     waitpid($pid, 0);
  41
  42     while (<OUTPUT>) {
  43             push(@output, $_);
  44     }
  45
  46     close(OUTPUT);
  47     return @output;
  48 }
  49 #
  50 # Function which will return the used interface for the red network zone (red0, ppp0, etc).
  51 sub General__get_red_interface() {
  52
  53      open(IFACE, "/var/ipfire/red/iface") or die "Could not open /var/ipfire/red/iface";
  54
  55      my $interface = <IFACE>;
  56      close(IFACE);
  57      chomp $interface;
  58
  59      return $interface;
  60 }
  61 #
  62 ###############################################################################
  63
  64 my $data_last = $ENV{'QUERY_STRING'};
  65 my $rxb_last = 0;
  66 my $txb_last = 0;
  67
  68 my (@fields, $field, $name, $value);
  69 @fields = split(/&/, $data_last);
  70 foreach $field (@fields) {
  71   ($name, $value) = split(/=/, $field);
  72   $value =~ tr/+/ /;
  73   $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
  74   if ("$name" eq "rxb_last") {
  75                 $rxb_last = $value;
  76         } elsif ("$name" eq "txb_last") {
  77                 $txb_last = $value;
  78         }
  79 }
  80
  81 my $interface = &General__get_red_interface();
  82 my @data_now = &General__system_output("ip", "-s", "link", "show", "$interface");
  83
  84 my $lastline;
  85 my $rxb_now = 0;
  86 my $txb_now = 0;
  87 foreach (@data_now) {
  88         if ( $lastline =~ /RX/ ) {
  89                 @fields = split(/ /, $_);
  90                 $rxb_now = $fields[4];
  91         } elsif ( $lastline =~ /TX/ ) {
  92                 @fields = split(/ /, $_);
  93                 $txb_now = $fields[4];
  94         }
  95         $lastline = $_;
  96 }
  97
  98 my ($rx_kbs, $tx_kbs);
  99 my $rxb_diff    = $rxb_now - $rxb_last;
 100 my $txb_diff    = $txb_now - $txb_last;
 101
 102 if(( $rxb_diff == $rxb_now ) && ( $txb_diff == $txb_now ))
 103 {
 104         $rx_kbs = "0";
 105         $tx_kbs = "0";
 106 }
 107 else
 108 {
 109         $rx_kbs = $rxb_diff / 1024;
 110         $rx_kbs = $rx_kbs / 3.2;
 111         $rx_kbs = int($rx_kbs);
 112         $tx_kbs = $txb_diff / 1024;
 113         $tx_kbs = $tx_kbs / 3.2;
 114         $tx_kbs = int($tx_kbs);
 115 }
 116
 117 print "pragma: no-cache\n";
 118 print "Content-type: text/xml\n\n";
 119 print "<?xml version=\"1.0\"?>\n";
 120 print <<END
 121 <inetinfo>
 122  <rx_kbs>$tx_kbs kb/s</rx_kbs>
 123  <tx_kbs>$rx_kbs kb/s</tx_kbs>
 124  <rxb>$rxb_now</rxb>
 125  <txb>$txb_now</txb>
 126 </inetinfo>
 127 END
 128 ;