| 1 |
elmex |
1.1 |
=head1 NET::IRC::Server |
| 2 |
|
|
|
| 3 |
|
|
NET::IRCServer - a module to handle the IRC Protocol and implements a lightweight IRC Server (without server-to-server support) |
| 4 |
|
|
|
| 5 |
|
|
=head1 SYNOPSIS |
| 6 |
|
|
|
| 7 |
|
|
use NET::IRC::Server; |
| 8 |
|
|
|
| 9 |
|
|
$server = NET::IRC::Server->new (srv_prefix => "mein.irc.server.funtzt.net"); |
| 10 |
|
|
|
| 11 |
|
|
$s->set_send_cb (sub { ... }); |
| 12 |
|
|
|
| 13 |
|
|
$s->parse_irc_stream (...) |
| 14 |
|
|
|
| 15 |
|
|
=cut |
| 16 |
|
|
|
| 17 |
|
|
package Net::IRC::Server; |
| 18 |
|
|
use Data::Dumper; |
| 19 |
|
|
use strict; |
| 20 |
|
|
use warnings; |
| 21 |
|
|
|
| 22 |
|
|
=head1 METHODS |
| 23 |
|
|
|
| 24 |
|
|
=over 4 |
| 25 |
|
|
|
| 26 |
|
|
=cut |
| 27 |
|
|
|
| 28 |
|
|
=item new (srv_prefix => $server_prefix) |
| 29 |
|
|
|
| 30 |
|
|
srv_prefix - the prefix the server will use for irc commands from itself |
| 31 |
|
|
|
| 32 |
|
|
=cut |
| 33 |
|
|
sub new { |
| 34 |
|
|
my $class = shift; |
| 35 |
|
|
my $self = { @_ }; |
| 36 |
|
|
bless $self, $class; |
| 37 |
|
|
return $self; |
| 38 |
|
|
} |
| 39 |
|
|
|
| 40 |
|
|
=item set_send_cb ($sub) |
| 41 |
|
|
|
| 42 |
|
|
The code-ref in the C<$sub> will be called everythime the server wants to send data to a client. |
| 43 |
|
|
The callback will be called with following arguments: |
| 44 |
|
|
|
| 45 |
|
|
$sub->($client, $data) |
| 46 |
|
|
|
| 47 |
|
|
$client - the client datastructure you give C<parse_irc_stream ()> |
| 48 |
|
|
$data - the raw data to send out, for example on a socket |
| 49 |
|
|
|
| 50 |
|
|
=cut |
| 51 |
|
|
sub set_send_cb { |
| 52 |
|
|
my ($self, $cb) = @_; |
| 53 |
|
|
$self->{send_cb} = $cb; |
| 54 |
|
|
} |
| 55 |
|
|
|
| 56 |
|
|
sub set_cmd_cb { |
| 57 |
|
|
my ($self, $cmd, $cb) = @_; |
| 58 |
|
|
$self->{cmd_cbs}->{uc $cmd} = $cb; |
| 59 |
|
|
} |
| 60 |
|
|
|
| 61 |
|
|
sub send_msg { |
| 62 |
|
|
my ($self, $client, @msg) = @_; |
| 63 |
|
|
$self->{send_cb}->($client, $self->mk_msg (@msg)); |
| 64 |
|
|
} |
| 65 |
|
|
|
| 66 |
|
|
sub mk_msg { |
| 67 |
|
|
my ($self, $prefix, $command, $trail, @params) = @_; |
| 68 |
|
|
my $msg = ""; |
| 69 |
|
|
|
| 70 |
|
|
$msg .= defined $prefix ? ":$prefix " : ""; |
| 71 |
|
|
$msg .= "$command"; |
| 72 |
|
|
|
| 73 |
|
|
map { $msg .= " $_" } @params; |
| 74 |
|
|
|
| 75 |
|
|
$msg .= defined $trail ? " :$trail" : ""; |
| 76 |
|
|
$msg .= "\r\n"; |
| 77 |
|
|
|
| 78 |
|
|
return $msg; |
| 79 |
|
|
} |
| 80 |
|
|
|
| 81 |
|
|
sub mk_clpref { |
| 82 |
|
|
my ($self, $client) = @_; |
| 83 |
|
|
return $client->{nickname}."!".$client->{username}.'@'.$client->{hostname}; |
| 84 |
|
|
} |
| 85 |
|
|
|
| 86 |
|
|
sub parse_irc_stream { |
| 87 |
|
|
my ($self, $client, $data) = @_; |
| 88 |
|
|
|
| 89 |
|
|
$self->{buffer} .= $data; |
| 90 |
|
|
|
| 91 |
|
|
while ($self->{buffer} =~ s/^([^\r\n]*)\r?\n//) { |
| 92 |
|
|
push @{$self->{msgs}}, $1; |
| 93 |
|
|
} |
| 94 |
|
|
|
| 95 |
|
|
map { $self->handle_irc_msg ($client, $self->parse_irc_msg ($_)) } @{$self->{msgs}}; |
| 96 |
|
|
|
| 97 |
|
|
$self->{msgs} = []; |
| 98 |
|
|
} |
| 99 |
|
|
|
| 100 |
|
|
sub handle_irc_msg { |
| 101 |
|
|
my ($self, $cl, $msg) = @_; |
| 102 |
|
|
|
| 103 |
|
|
return if not defined $msg; |
| 104 |
|
|
|
| 105 |
|
|
my $c = $msg->{command}; |
| 106 |
|
|
|
| 107 |
|
|
my $r; |
| 108 |
|
|
$r ||= $self->{cmd_cbs}->{uc $c}->($cl, $msg) if defined $self->{cmd_cbs}->{uc $c}; |
| 109 |
|
|
$r ||= $self->{cmd_cbs}->{"*"}->($cl, $msg) if defined $self->{cmd_cbs}->{"*"}; |
| 110 |
|
|
|
| 111 |
|
|
if ($r) { |
| 112 |
|
|
warn "notihgn to do skip srv code\n"; |
| 113 |
|
|
return |
| 114 |
|
|
} |
| 115 |
|
|
|
| 116 |
|
|
if ($c eq "USER") { |
| 117 |
|
|
$cl->{username} = $msg->{params}->[0]; |
| 118 |
|
|
$cl->{realname} = $msg->{params}->[3]; |
| 119 |
|
|
|
| 120 |
|
|
} elsif ($c eq "NICK") { |
| 121 |
|
|
my $n = $msg->{params}->[0]; |
| 122 |
|
|
$self->change_nick ($n, $cl); |
| 123 |
|
|
} |
| 124 |
|
|
|
| 125 |
|
|
if (defined $cl->{username} |
| 126 |
|
|
and defined $cl->{nickname} |
| 127 |
|
|
and not $cl->{registered}) |
| 128 |
|
|
{ |
| 129 |
|
|
$self->send_msg ($cl, $self->{srv_prefix}, "001", |
| 130 |
|
|
"Welcome to NET::IRCServer! " |
| 131 |
|
|
. $self->mk_clpref ($cl), $cl->{nickname}); |
| 132 |
|
|
$cl->{registered} = 1; |
| 133 |
|
|
} |
| 134 |
|
|
|
| 135 |
|
|
if ($c eq "PASS") { |
| 136 |
|
|
$cl->{password} = $msg->{params}->[0]; |
| 137 |
|
|
|
| 138 |
|
|
} elsif ($c eq "JOIN") { |
| 139 |
|
|
my @chnls = split /,/, $msg->{params}->[0]; |
| 140 |
|
|
my @keys; |
| 141 |
|
|
@keys = split /,/, $msg->{params}->[1] if defined $msg->{params}->[1]; |
| 142 |
|
|
|
| 143 |
|
|
$self->join_channel ($cl, $_, pop @keys) for @chnls; |
| 144 |
|
|
|
| 145 |
|
|
} elsif ($c eq "PART") { |
| 146 |
|
|
my @chnls = split /,/, $msg->{params}->[0]; |
| 147 |
|
|
$self->part_channel ($cl, $_, $msg->{params}->[1]) for @chnls; |
| 148 |
|
|
|
| 149 |
|
|
} elsif ($c eq "NOTICE" or $c eq "PRIVMSG") { |
| 150 |
|
|
$self->generic_msg ($cl, $msg->{params}->[0], $c, $msg->{params}->[1]); |
| 151 |
|
|
} |
| 152 |
|
|
|
| 153 |
|
|
} |
| 154 |
|
|
|
| 155 |
|
|
=item part_channel ($client, $channel, $reason) |
| 156 |
|
|
|
| 157 |
|
|
It will remove the C<$client> from the C<$channel> and will send a PART to all members of that channel. |
| 158 |
|
|
The part C<$reason> may be undefined. |
| 159 |
|
|
|
| 160 |
|
|
=cut |
| 161 |
|
|
sub part_channel { |
| 162 |
|
|
my ($self, $client, $chan, $reas) = @_; |
| 163 |
|
|
|
| 164 |
|
|
$self->channel_brdcst ($self->mk_clpref ($client), $chan, "PART", $reas, $chan); |
| 165 |
|
|
$self->remove_channel ($client, $chan); |
| 166 |
|
|
} |
| 167 |
|
|
|
| 168 |
|
|
=item join_channel ($client, $channel, $key) |
| 169 |
|
|
|
| 170 |
|
|
=cut |
| 171 |
|
|
sub join_channel { |
| 172 |
|
|
my ($self, $client, $chan, $key) = @_; |
| 173 |
|
|
|
| 174 |
|
|
if ($chan eq "0") { |
| 175 |
|
|
# part all channels of $client |
| 176 |
|
|
$self->part_channel ($client, $_) for keys %{$client->{channels}}; |
| 177 |
|
|
$self->remove_channel ($client, $_) for keys %{$client->{channels}}; |
| 178 |
|
|
|
| 179 |
|
|
} else { |
| 180 |
|
|
$self->add_channel ($client, $chan); |
| 181 |
|
|
$self->channel_brdcst ($self->mk_clpref ($client), $chan, "JOIN", $chan); |
| 182 |
|
|
} |
| 183 |
|
|
} |
| 184 |
|
|
|
| 185 |
|
|
sub add_channel { |
| 186 |
|
|
my ($self, $client, $channel) = @_; |
| 187 |
|
|
$self->{channels}->{lc $channel}->{lc $client->{nickname}} = $client; |
| 188 |
|
|
$client->{channels}->{lc $channel} = 1; |
| 189 |
|
|
} |
| 190 |
|
|
|
| 191 |
|
|
sub remove_channel { |
| 192 |
|
|
my ($self, $client, $channel) = @_; |
| 193 |
|
|
delete $self->{channels}->{lc $channel}->{lc $client->{nickname}}; |
| 194 |
|
|
delete $client->{channels}->{lc $channel}; |
| 195 |
|
|
} |
| 196 |
|
|
|
| 197 |
|
|
sub channel_brdcst { |
| 198 |
|
|
my ($self, $prefix, $channel, $command, @rmsg) = @_; |
| 199 |
|
|
$self->channel_brdcst_exclude (undef, $prefix, $channel, $command, @rmsg); |
| 200 |
|
|
} |
| 201 |
|
|
|
| 202 |
|
|
sub channel_brdcst_exclude { |
| 203 |
|
|
my ($self, $excl_cl, $prefix, $channel, $command, @rmsg) = @_; |
| 204 |
|
|
|
| 205 |
|
|
for (values %{$self->{channels}->{lc $channel}}) { |
| 206 |
|
|
if (not (defined $excl_cl) or $excl_cl != $_) { |
| 207 |
|
|
$self->send_msg ($_, $prefix, uc $command, @rmsg); |
| 208 |
|
|
} |
| 209 |
|
|
} |
| 210 |
|
|
} |
| 211 |
|
|
|
| 212 |
|
|
|
| 213 |
|
|
sub generic_msg { |
| 214 |
|
|
my ($self, $client, $target, $msgcmd, $msg) = @_; |
| 215 |
|
|
|
| 216 |
|
|
my $pref = $self->mk_clpref ($client); |
| 217 |
|
|
|
| 218 |
|
|
if (exists $self->{channels}->{lc $target}) { |
| 219 |
|
|
$self->channel_brdcst_exclude ($client, $pref, $target, uc ($msgcmd), $msg, $target); |
| 220 |
|
|
} else { |
| 221 |
|
|
$self->send_msg ($self->{reg_nicks}->{lc $target}, $pref, uc ($msgcmd), $msg, $target); |
| 222 |
|
|
} |
| 223 |
|
|
} |
| 224 |
|
|
|
| 225 |
|
|
sub check_nick_exists { |
| 226 |
|
|
my ($self, $nick) = @_; |
| 227 |
|
|
return 0; |
| 228 |
|
|
} |
| 229 |
|
|
|
| 230 |
|
|
sub change_nick { |
| 231 |
|
|
my ($self, $nick, $client) = @_; |
| 232 |
|
|
|
| 233 |
|
|
# check wether the nick to change to is already in use |
| 234 |
|
|
if (exists $self->{reg_nicks}->{lc $nick}) { |
| 235 |
|
|
$self->send_msg ($client, $self->{srv_prefix}, 433, "Nickname is already in use", $nick); |
| 236 |
|
|
return; |
| 237 |
|
|
} |
| 238 |
|
|
|
| 239 |
|
|
my %ppltotell; # hash-list of people to send a nick-update |
| 240 |
|
|
|
| 241 |
|
|
if (defined $client->{nickname}) { |
| 242 |
|
|
|
| 243 |
|
|
# update channels the client is on |
| 244 |
|
|
for my $c (keys %{$client->{channels}}) { |
| 245 |
|
|
|
| 246 |
|
|
# search the people to tell this nick changed |
| 247 |
|
|
for (values %{$self->{channels}->{lc $c}}) { |
| 248 |
|
|
$ppltotell{$_->{nickname}} = $_; |
| 249 |
|
|
} |
| 250 |
|
|
|
| 251 |
|
|
# change the nickname in the channel lists |
| 252 |
|
|
delete $self->{channels}->{lc $c}->{$client->{nickname}}; |
| 253 |
|
|
$self->{channels}->{lc $c}->{$nick} = $client; |
| 254 |
|
|
} |
| 255 |
|
|
} |
| 256 |
|
|
|
| 257 |
|
|
if ($client->{registered}) { # only tell if this client is registered |
| 258 |
|
|
|
| 259 |
|
|
# send us and others that the nick changed |
| 260 |
|
|
$ppltotell{$client->{nickname}} = $client; |
| 261 |
|
|
my $oldprfx = $self->mk_clpref ($client); |
| 262 |
|
|
$self->send_msg ($_, $oldprfx, "NICK", undef, $nick) for values %ppltotell; |
| 263 |
|
|
} |
| 264 |
|
|
|
| 265 |
|
|
# now update the client data |
| 266 |
|
|
delete $self->{reg_nicks}->{lc $client->{nickname}}; |
| 267 |
|
|
$client->{nickname} = $nick; |
| 268 |
|
|
$self->{reg_nicks}->{$nick} = $client; |
| 269 |
|
|
|
| 270 |
|
|
return 1; |
| 271 |
|
|
} |
| 272 |
|
|
|
| 273 |
|
|
our $cmd; |
| 274 |
|
|
our $pref; |
| 275 |
|
|
our $t; |
| 276 |
|
|
our @a; |
| 277 |
|
|
|
| 278 |
|
|
sub parse_irc_msg { |
| 279 |
|
|
my ($self, $msg) = @_; |
| 280 |
|
|
|
| 281 |
|
|
$cmd = ""; |
| 282 |
|
|
$pref = ""; |
| 283 |
|
|
$t = ""; |
| 284 |
|
|
@a = (); |
| 285 |
|
|
|
| 286 |
|
|
my $p = $msg =~ |
| 287 |
|
|
m/^( : ([^ ]+)(?{$pref = $^N}) [ ] )? # the prefix |
| 288 |
|
|
|
| 289 |
|
|
([A-Za-z]+|\d{3})(?{$cmd = $^N}) # the command |
| 290 |
|
|
|
| 291 |
|
|
( |
| 292 |
|
|
# now either 14 params and a trailing with optional ':' |
| 293 |
|
|
(?{@a = ()}) ( |
| 294 |
|
|
( [ ] ([^ :\r\n\0][^ \r\n\0]*)(?{push @a, $^N}) ){14} # params |
| 295 |
|
|
|
| 296 |
|
|
( [ ]:? ([^\r\n\0]*) (?{$t = $^N}) )? # trailing |
| 297 |
|
|
) |
| 298 |
|
|
|
| 299 |
|
|
| # OR: 0 to 13 params and trailing with required ':' |
| 300 |
|
|
|
| 301 |
|
|
(?{@a = ()}) ( |
| 302 |
|
|
( [ ] ([^ :\r\n\0][^ \r\n\0]*)(?{push @a, $^N}) ){0,13} # 0 to 13 params |
| 303 |
|
|
|
| 304 |
|
|
( [ ]: ([^\r\n\0]*)(?{$t = $^N}) )? # trailing |
| 305 |
|
|
) |
| 306 |
|
|
|
| 307 |
|
|
) |
| 308 |
|
|
$/x; |
| 309 |
|
|
|
| 310 |
|
|
my $m = { prefix => $pref, command => $cmd, params => \@a, trailing => $t }; |
| 311 |
|
|
|
| 312 |
|
|
push @{$m->{params}}, $m->{trailing} if defined $m->{trailing}; |
| 313 |
|
|
return $p ? $m : undef; |
| 314 |
|
|
} |
| 315 |
|
|
|
| 316 |
|
|
=back |
| 317 |
|
|
|
| 318 |
|
|
=cut |
| 319 |
|
|
|
| 320 |
|
|
1; |
