src/Modules/BZFlag.pl

   1 #!/usr/bin/perl
   2 #
   3 # BZFlag
   4 # Copyright (c) 1993 - 2002 Tim Riker
   5 #
   6 # This package is free software;  you can redistribute it and/or
   7 # modify it under the terms of the license found in the file
   8 # named LICENSE that should have accompanied this file.
   9 #
  10 # THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  11 # IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  12 # WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  13
  14 package BZFlag;
  15 use strict;
  16 use Fcntl qw(F_GETFL F_SETFL O_NONBLOCK);
  17
  18 my $no_BZFlag;
  19
  20 BEGIN {
  21         $no_BZFlag = 0;
  22         eval "use Socket";
  23         eval "use LWP::UserAgent";
  24         $no_BZFlag++ if ($@);
  25 }
  26
  27 sub BZFlag::BZFlag {
  28         my ($message) = @_;
  29   my ($retval);
  30         if ($no_BZFlag) {
  31                 &main::status("BZFlag module requires Socket.");
  32                 return 'BZFlag module not active';
  33         }
  34         if ($message =~ /^bzfquery\s+([^:]*)(?::([0-9]*))?$/xi) {
  35                 $retval = &query($1,$2);
  36         } elsif ($message =~ /^bzflist$/xi) {
  37                 $retval = &list();
  38   } else {
  39                 $retval = "BZFlag: unhandled command \"$message\"";
  40         }
  41         &::performStrictReply($retval);
  42 }
  43
  44 sub BZFlag::list {
  45         my ($response);
  46         my $ua = new LWP::UserAgent;
  47         $ua->proxy('http', $::param{'httpProxy'}) if (&::IsParam("httpProxy"));
  48
  49         $ua->timeout(5);
  50
  51         my $req = HTTP::Request->new('GET', 'http://db.bzflag.org/db/?action=LIST');
  52         my $res = $ua->request($req);
  53   my %servers;
  54   my $totalServers = 0;
  55   my $totalPlayers = 0;
  56         for my $line (split("\n",$res->content)) {
  57                 my ($serverport, $version, $flags, $ip, $comments) = split(" ",$line,5);
  58                 # not "(A4)18" to handle old dumb perl
  59                 my ($style, $maxShots, $shakeWins, $shakeTimeout, $maxPlayerScore, $maxTeamScore, $maxTime,
  60                                 $maxPlayers, $rogueSize, $rogueMax, $redSize, $redMax, $greenSize, $greenMax,
  61                                 $blueSize, $blueMax, $purpleSize, $purpleMax, $observerSize, $observerMax) =
  62                                 unpack("A4A4A4A4A4A4A4A2A2A2A2A2A2A2A2A2A2A2A2A2", $flags);
  63                 my $playerSize = hex($rogueSize) + hex($redSize) + hex($greenSize)
  64                                 + hex($blueSize) + hex($purpleSize) + hex($observerSize);
  65           $servers{$serverport} = $playerSize;
  66           $totalServers += 1;
  67           $totalPlayers += $playerSize;
  68         }
  69   $response .= "s=$totalServers p=$totalPlayers";
  70   foreach my $key (sort {$servers{$b} <=> $servers{$a}} (keys(%servers))) {
  71                 if ($servers{$key} > 0) {
  72                         $response .= " $key($servers{$key})";
  73                 }
  74   }
  75         &::performStrictReply($response);
  76         return;
  77 }
  78
  79 sub BZFlag::list17 {
  80         my ($response);
  81         my $ua = new LWP::UserAgent;
  82         $ua->proxy('http', $::param{'httpProxy'}) if (&::IsParam("httpProxy"));
  83
  84         $ua->timeout(5);
  85
  86         my $req = HTTP::Request->new('GET', 'http://list.bzflag.org:5156/');
  87         my $res = $ua->request($req);
  88   my %servers;
  89   my $totalServers = 0;
  90   my $totalPlayers = 0;
  91         for my $line (split("\n",$res->content)) {
  92                 my ($serverport, $version, $flags, $ip, $comments) = split(" ",$line,5);
  93                 # not "(A4)18" to handle old dumb perl
  94                 my ($style,$maxPlayers,$maxShots,
  95                                 $rogueSize,$redSize,$greenSize,$blueSize,$purpleSize,
  96                                 $rogueMax,$redMax,$greenMax,$blueMax,$purpleMax,
  97                                 $shakeWins,$shakeTimeout,
  98                                 $maxPlayerScore,$maxTeamScore,$maxTime) =
  99                                 unpack("A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4", $flags);
 100                 my $playerSize = hex($rogueSize) + hex($redSize) + hex($greenSize)
 101                                 + hex($blueSize) + hex($purpleSize);
 102           $servers{$serverport} = $playerSize;
 103           $totalServers += 1;
 104           $totalPlayers += $playerSize;
 105         }
 106   $response .= "s=$totalServers p=$totalPlayers";
 107   foreach my $key (sort {$servers{$b} <=> $servers{$a}} (keys(%servers))) {
 108                 if ($servers{$key} > 0) {
 109                         $response .= " $key($servers{$key})";
 110                 }
 111   }
 112         &::performStrictReply($response);
 113         return;
 114 }
 115
 116 sub BZFlag::querytext {
 117         my ($servernameport) = @_;
 118         my ($servername,$port) = split(":",$servernameport);
 119         if ($no_BZFlag) {
 120                 &main::status("BZFlag module requires Socket.");
 121                 return 'BZFlag module not active';
 122         }
 123         #my @teamName = ("Rogue", "Red", "Green", "Blue", "Purple", "Observer", "Rabbit");
 124         my @teamName = ("X", "R", "G", "B", "P", "O", "K");
 125         my ($message, $server, $response);
 126         $port = 5154 unless $port;
 127
 128         # socket define
 129         my $sockaddr = 'S n a4 x8';
 130
 131         # port to port number
 132         my ($name,$aliases,$proto) = getprotobyname('tcp');
 133         ($name,$aliases,$port)  = getservbyname($port,'tcp') unless $port =~ /^\d+$/;
 134
 135         # get server address
 136         my ($type,$len,$serveraddr);
 137         ($name,$aliases,$type,$len,$serveraddr) = gethostbyname($servername);
 138         $server = pack($sockaddr, AF_INET, $port, $serveraddr);
 139
 140         # connect
 141         return 'socket() error' unless socket(S1, AF_INET, SOCK_STREAM, $proto);
 142         return "could not connect to $servername:$port" unless connect(S1, $server);
 143
 144         # don't buffer
 145         select(S1); $| = 1; select(STDOUT);
 146
 147         # get hello
 148         my $buffer;
 149         return 'read error' unless read(S1, $buffer, 8) == 8;
 150
 151         # parse reply
 152         my ($magic,$major,$minor,$something,$revision) = unpack("a4 a1 a1 a1 a1", $buffer);
 153
 154         # quit if version isn't valid
 155         return 'not a bzflag server' if ($magic ne "BZFS");
 156   # check version
 157   if ($major == 1 && $minor == 9) {
 158           $revision = $something * 10 + $revision;
 159           return 'read error' unless read(S1, $buffer, 1) == 1;
 160           my ($id) = unpack("C", $buffer);
 161
 162                 # send game request
 163                 print S1 pack("n2", 0, 0x7167);
 164
 165                 # FIXME the packets are wrong from here down
 166                 # get reply
 167                 return 'server read error' unless read(S1, $buffer, 40) == 40;
 168                 my ($infolen,$infocode,$style,$maxPlayers,$maxShots,
 169                         $rogueSize,$redSize,$greenSize,$blueSize,$purpleSize,
 170                         $rogueMax,$redMax,$greenMax,$blueMax,$purpleMax,
 171                         $shakeWins,$shakeTimeout,
 172                         $maxPlayerScore,$maxTeamScore,$maxTime) = unpack("n20", $buffer);
 173                 return 'bad server data' unless $infocode == 0x7167;
 174
 175                 # send players request
 176                 print S1 pack("n2", 0, 0x7170);
 177
 178                 # get number of teams and players we'll be receiving
 179                 return 'count read error' unless read(S1, $buffer, 8) == 8;
 180                 my ($countlen,$countcode,$numTeams,$numPlayers) = unpack("n4", $buffer);
 181
 182                 # get the teams
 183                 return 'bad count data' unless $countcode == 0x7170;
 184     return 'count read error' unless read(S1, $buffer, 5) == 5;
 185     ($countlen,$countcode,$numTeams) = unpack("n n C", $buffer);
 186                 for (1..$numTeams) {
 187                         return 'team read error' unless read(S1, $buffer, 8) == 8;
 188                         my ($team,$size,$won,$lost) = unpack("n4", $buffer);
 189                         if ($size > 0) {
 190                                 my $score = $won - $lost;
 191                                 $response .= "$teamName[$team]:$score($won-$lost) ";
 192                         }
 193                 }
 194
 195                 # get the players
 196                 for (1..$numPlayers) {
 197                         last unless read(S1, $buffer, 175) == 175;
 198                         my ($playerlen,$playercode,$pID,$type,$team,$won,$lost,$tks,$sign,$email) =
 199                                         unpack("n2Cn5A32A128", $buffer);
 200                         #my ($playerlen,$playercode,$pAddr,$pPort,$pNum,$type,$team,$won,$lost,$sign,$email) =
 201                         #               unpack("n2Nn2 n4A32A128", $buffer);
 202                         return 'bad player data' unless $playercode == 0x6170;
 203                         my $score = $won - $lost;
 204                         $response .= " $sign($teamName[$team]";
 205                         $response .= ":$email" if ($email);
 206                         $response .= ")$score($won-$lost)";
 207                 }
 208                 $response .= "No Players" if ($numPlayers < 1);
 209
 210                 # close socket
 211                 close(S1);
 212         } elsif ($major == 1 && $minor == 0 && $something == 7) {
 213           # old servers send a reconnect port number
 214           return 'read error' unless read(S1, $buffer, 2) == 2;
 215           my ($reconnect) = unpack("n", $buffer);
 216     $minor = $minor * 10 + $something;
 217                 # quit if rejected
 218                 return 'rejected by server' if ($reconnect == 0);
 219
 220                 # reconnect on new port
 221                 $server = pack($sockaddr, AF_INET, $reconnect, $serveraddr);
 222                 return 'socket() error on reconnect' unless socket(S, AF_INET, SOCK_STREAM, $proto);
 223                 return "could not reconnect to $servername:$reconnect" unless connect(S, $server);
 224                 select(S); $| = 1; select(STDOUT);
 225
 226                 # close first socket
 227                 close(S1);
 228
 229                 # send game request
 230                 print S pack("n2", 0, 0x7167);
 231
 232                 # get reply
 233                 return 'server read error' unless read(S, $buffer, 40) == 40;
 234                 my ($infolen,$infocode,$style,$maxPlayers,$maxShots,
 235                         $rogueSize,$redSize,$greenSize,$blueSize,$purpleSize,
 236                         $rogueMax,$redMax,$greenMax,$blueMax,$purpleMax,
 237                         $shakeWins,$shakeTimeout,
 238                         $maxPlayerScore,$maxTeamScore,$maxTime) = unpack("n20", $buffer);
 239                 return 'bad server data' unless $infocode == 0x7167;
 240
 241                 # send players request
 242                 print S pack("n2", 0, 0x7170);
 243
 244                 # get number of teams and players we'll be receiving
 245                 return 'count read error' unless read(S, $buffer, 8) == 8;
 246                 my ($countlen,$countcode,$numTeams,$numPlayers) = unpack("n4", $buffer);
 247                 return 'bad count data' unless $countcode == 0x7170;
 248
 249                 # get the teams
 250                 for (1..$numTeams) {
 251                         return 'team read error' unless read(S, $buffer, 14) == 14;
 252                         my ($teamlen,$teamcode,$team,$size,$aSize,$won,$lost) = unpack("n7", $buffer);
 253                         return 'bad team data' unless $teamcode == 0x7475;
 254                         if ($size > 0) {
 255                                 my $score = $won - $lost;
 256                                 $response .= "$teamName[$team]:$score($won-$lost) ";
 257                         }
 258                 }
 259
 260                 # get the players
 261                 for (1..$numPlayers) {
 262                         last unless read(S, $buffer, 180) == 180;
 263                         my ($playerlen,$playercode,$pAddr,$pPort,$pNum,$type,$team,$won,$lost,$sign,$email) =
 264                                         unpack("n2Nn2 n4A32A128", $buffer);
 265                         return 'bad player data' unless $playercode == 0x6170;
 266                         my $score = $won - $lost;
 267                         $response .= " $sign($teamName[$team]";
 268                         $response .= ":$email" if ($email);
 269                         $response .= ")$score($won-$lost)";
 270                 }
 271                 $response .= "No Players" if ($numPlayers <= 1);
 272
 273                 # close socket
 274                 close(S);
 275   } else {
 276           $response = 'incompatible version';
 277         }
 278
 279         return $response;
 280 }
 281
 282 sub BZFlag::query {
 283         my ($servernameport) = @_;
 284         &::performStrictReply(&querytext($servernameport));
 285   return;
 286 }
 287
 288 1;
 289 # vim: ts=2 sw=2