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# You may distribute under the terms of either the GNU General Public License |
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# or the Artistic License (the same terms as Perl itself) |
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# |
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# (C) Paul Evans, 2010-2015 -- leonerd@leonerd.org.uk |
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package Protocol::IRC::Client; |
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use strict; |
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use warnings; |
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use 5.010; # // |
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use base qw( Protocol::IRC ); |
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our $VERSION = '0.11'; |
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use Carp; |
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=head1 NAME |
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C - IRC protocol handling for a client |
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=head1 DESCRIPTION |
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This mix-in class provides a layer of IRC message handling logic suitable for |
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an IRC client. It builds upon L to provide extra message |
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processing useful to IRC clients, such as handling inbound server numerics. |
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It provides some of the methods required by C: |
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=over 4 |
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=item * isupport |
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=back |
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=cut |
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=head1 METHODS |
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=cut |
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=head2 isupport |
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$value = $irc->isupport( $key ) |
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Returns an item of information from the server's C<005 ISUPPORT> lines. |
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Traditionally IRC servers use all-capital names for keys. |
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=cut |
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# A few hardcoded defaults from RFC 2812 |
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my %ISUPPORT = ( |
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channame_re => qr/^[#&]/, |
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prefixflag_re => qr/^[\@+]/, |
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chanmodes_list => [qw( b k l imnpst )], # TODO: ov |
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); |
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sub isupport |
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{ |
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my $self = shift; |
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my ( $field ) = @_; |
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return $self->{Protocol_IRC_isupport}->{$field} // $ISUPPORT{$field}; |
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} |
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sub on_message_RPL_ISUPPORT |
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{ |
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my $self = shift; |
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my ( $message, $hints ) = @_; |
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my $isupport = $self->{Protocol_IRC_isupport} ||= {}; |
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foreach my $entry ( @{ $hints->{isupport} } ) { |
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my ( $name, $value ) = $entry =~ m/^([A-Z]+)(?:=(.*))?$/; |
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$value = 1 if !defined $value; |
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$isupport->{$name} = $value; |
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if( $name eq "PREFIX" ) { |
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my $prefix = $value; |
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my ( $prefix_modes, $prefix_flags ) = $prefix =~ m/^\(([a-z]+)\)(.+)$/i |
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or warn( "Unable to parse PREFIX=$value" ), next; |
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$isupport->{prefix_modes} = $prefix_modes; |
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$isupport->{prefix_flags} = $prefix_flags; |
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$isupport->{prefixflag_re} = qr/[$prefix_flags]/; |
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my %prefix_map; |
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$prefix_map{substr $prefix_modes, $_, 1} = substr $prefix_flags, $_, 1 for ( 0 .. length($prefix_modes) - 1 ); |
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$isupport->{prefix_map_m2f} = \%prefix_map; |
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$isupport->{prefix_map_f2m} = { reverse %prefix_map }; |
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} |
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elsif( $name eq "CHANMODES" ) { |
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$isupport->{chanmodes_list} = [ split( m/,/, $value ) ]; |
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} |
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elsif( $name eq "CASEMAPPING" ) { |
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# TODO |
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# $self->{nick_folded} = $self->casefold_name( $self->{nick} ); |
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} |
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elsif( $name eq "CHANTYPES" ) { |
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$isupport->{channame_re} = qr/^[$value]/; |
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} |
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} |
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return 0; |
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} |
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=head2 server_info |
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$info = $irc->server_info( $key ) |
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Returns an item of information from the server's C<004> line. C<$key> should |
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one of |
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=over 8 |
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=item * host |
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=item * version |
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=item * usermodes |
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=item * channelmodes |
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=back |
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=cut |
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sub server_info |
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{ |
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my $self = shift; |
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my ( $key ) = @_; |
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return $self->{Protocol_IRC_server_info}{$key}; |
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} |
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sub on_message_RPL_MYINFO |
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{ |
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my $self = shift; |
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my ( $message, $hints ) = @_; |
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@{$self->{Protocol_IRC_server_info}}{qw( host version usermodes channelmodes )} = |
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@{$hints}{qw( serverhost serverversion usermodes channelmodes )}; |
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return 0; |
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} |
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150
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=head1 GATING MESSAGES |
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If messages with a gating disposition are received, extra processing is |
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applied. Messages whose gating effect is C are simply collected up by |
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pushing the hints hash to an array. Added to this hash is the command name |
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itself, so that in the case of multiple message types (for example C |
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replies) the individual messages can still be identified. |
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When the effect of C or C is eventually received, this collected |
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array is passed as C<$data> to a handler in one of the following places: |
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161
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=over 4 |
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163
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=item 1. |
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165
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A method called C |
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167
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$client->on_gate_EFFECT_GATE( $message, $hints, $data ) |
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169
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=item 2. |
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171
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A method called C |
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173
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$client->on_gate_EFFECT( 'GATE', $message, $hints, $data ) |
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175
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=item 3. |
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177
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A method called C |
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179
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$client->on_gate( 'EFFECT, 'GATE', $message, $hints, $data ) |
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181
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=back |
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183
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=cut |
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185
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sub on_message_gate |
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{ |
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my $self = shift; |
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my ( $effect, $gate, $message, $hints ) = @_; |
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my $target = $hints->{target_name_folded} // "*"; |
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191
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if( $effect eq "more" ) { |
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push @{ $self->{Protocol_IRC_gate}{$target}{$gate} }, { |
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193
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%$hints, |
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command => $message->command_name, |
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}; |
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return 1; |
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} |
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199
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my $data = delete $self->{Protocol_IRC_gate}{$target}{$gate}; |
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keys %{ $self->{Protocol_IRC_gate}{$target} } or delete $self->{Protocol_IRC_gate}{$target}; |
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201
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202
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my %hints = ( |
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%$hints, |
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synthesized => 1, |
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); |
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207
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$self->invoke( "on_gate_${effect}_$gate", $message, \%hints, $data ) and $hints{handled} = 1; |
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$self->invoke( "on_gate_$effect", $gate, $message, \%hints, $data ) and $hints{handled} = 1; |
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$self->invoke( "on_gate", $effect, $gate, $message, \%hints, $data ) and $hints{handled} = 1; |
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211
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return $hints{handled}; |
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} |
213
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214
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=head1 INTERNAL MESSAGE HANDLING |
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216
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The following messages are handled internally by C. |
217
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218
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=cut |
219
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220
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sub _invoke_synthetic |
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{ |
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0
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my $self = shift; |
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0
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my ( $command, $message, $hints, @morehints ) = @_; |
224
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225
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0
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my %hints = ( |
226
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%$hints, |
227
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synthesized => 1, |
228
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@morehints, |
229
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); |
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0
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delete $hints{handled}; |
231
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232
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0
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0
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$self->invoke( "on_message_$command", $message, \%hints ) and $hints{handled} = 1; |
233
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0
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0
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$self->invoke( "on_message", $command, $message, \%hints ) and $hints{handled} = 1; |
234
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235
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0
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return $hints{handled}; |
236
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} |
237
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238
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=head2 CAP |
239
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240
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This message takes a sub-verb as its second argument, and a list of capability |
241
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names as its third. On receipt of a C message, the verb is extracted and |
242
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set as the C hint, and the list capabilities set as the keys of a hash |
243
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given as the C hint. These are then passed to an event called |
244
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245
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$irc->on_message_cap_VERB( $message, \%hints ) |
246
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247
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or |
248
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249
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$irc->on_message_cap( 'VERB', $message, \%hints ) |
250
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251
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=cut |
252
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253
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sub on_message_CAP |
254
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{ |
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0
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0
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my $self = shift; |
256
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0
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my ( $message, $hints ) = @_; |
257
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258
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0
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my $verb = $message->arg(1); |
259
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260
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my %hints = ( |
261
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%$hints, |
262
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verb => $verb, |
263
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0
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caps => { map { $_ => 1 } split m/ /, $message->arg(2) }, |
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0
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264
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); |
265
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266
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0
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0
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$self->invoke( "on_message_cap_$verb", $message, \%hints ) and $hints{handled} = 1; |
267
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0
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0
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$self->invoke( "on_message_cap", $verb, $message, \%hints ) and $hints{handled} = 1; |
268
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269
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0
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return $hints{handled}; |
270
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} |
271
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272
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=head2 MODE (on channels) and 324 (RPL_CHANNELMODEIS) |
273
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274
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These messages involve channel modes. The raw list of channel modes is parsed |
275
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into an array containing one entry per affected piece of data. Each entry will |
276
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contain at least a C key, indicating what sort of mode or mode change |
277
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it is: |
278
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279
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=over 8 |
280
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281
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=item list |
282
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283
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The mode relates to a list; bans, invites, etc.. |
284
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285
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=item value |
286
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287
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The mode sets a value about the channel |
288
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289
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=item bool |
290
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291
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The mode is a simple boolean flag about the channel |
292
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293
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=item occupant |
294
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295
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The mode relates to a user in the channel |
296
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297
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=back |
298
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299
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Every mode type then provides a C key, containing the mode character |
300
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itself, and a C key which is an empty string, C<+>, or C<->. |
301
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302
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For C and C types, the C key gives the actual list entry |
303
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or value being set. |
304
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305
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For C types, a C key gives the mode converted into an occupant |
306
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flag (by the C method), C and C store the |
307
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user name affected. |
308
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309
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C types do not create any extra keys. |
310
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311
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=cut |
312
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313
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sub prepare_hints_channelmode |
314
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{ |
315
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0
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0
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0
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|
my $self = shift; |
316
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0
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|
my ( $message, $hints ) = @_; |
317
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|
318
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0
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|
my ( $listmodes, $argmodes, $argsetmodes, $boolmodes ) = @{ $self->isupport( 'chanmodes_list' ) }; |
|
0
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|
319
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320
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0
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my $modechars = $hints->{modechars}; |
321
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0
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|
my @modeargs = @{ $hints->{modeargs} }; |
|
0
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|
322
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323
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0
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my @modes; # [] -> { type => $, sense => $, mode => $, arg => $ } |
324
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|
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|
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|
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|
325
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0
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|
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|
my $sense = 0; |
326
|
0
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|
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|
|
|
foreach my $modechar ( split( m//, $modechars ) ) { |
327
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0
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0
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|
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|
|
$sense = 1, next if $modechar eq "+"; |
328
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0
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0
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$sense = -1, next if $modechar eq "-"; |
329
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330
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0
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|
my $hasarg; |
331
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332
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0
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|
my $mode = { |
333
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mode => $modechar, |
334
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|
sense => $sense, |
335
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}; |
336
|
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337
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0
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0
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if( index( $listmodes, $modechar ) > -1 ) { |
|
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0
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0
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0
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0
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338
|
0
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|
$mode->{type} = 'list'; |
339
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0
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0
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|
|
$mode->{value} = shift @modeargs if ( $sense != 0 ); |
340
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} |
341
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elsif( index( $argmodes, $modechar ) > -1 ) { |
342
|
0
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|
$mode->{type} = 'value'; |
343
|
0
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0
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|
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|
|
$mode->{value} = shift @modeargs if ( $sense != 0 ); |
344
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|
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} |
345
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|
elsif( index( $argsetmodes, $modechar ) > -1 ) { |
346
|
0
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|
$mode->{type} = 'value'; |
347
|
0
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0
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$mode->{value} = shift @modeargs if ( $sense > 0 ); |
348
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} |
349
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|
elsif( index( $boolmodes, $modechar ) > -1 ) { |
350
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0
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|
$mode->{type} = 'bool'; |
351
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|
} |
352
|
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|
elsif( my $flag = $self->prefix_mode2flag( $modechar ) ) { |
353
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0
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|
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|
$mode->{type} = 'occupant'; |
354
|
0
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|
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|
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|
$mode->{flag} = $flag; |
355
|
0
|
0
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|
|
|
|
$mode->{nick} = shift @modeargs if ( $sense != 0 ); |
356
|
0
|
|
|
|
|
|
$mode->{nick_folded} = $self->casefold_name( $mode->{nick} ); |
357
|
|
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|
|
|
|
} |
358
|
|
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|
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|
|
else { |
359
|
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|
|
# TODO: Err... not recognised ... what do I do? |
360
|
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|
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|
|
} |
361
|
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|
362
|
|
|
|
|
|
|
# TODO: Consider a per-mode event here... |
363
|
|
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|
|
|
|
|
364
|
0
|
|
|
|
|
|
push @modes, $mode; |
365
|
|
|
|
|
|
|
} |
366
|
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|
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|
367
|
0
|
|
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|
|
|
$hints->{modes} = \@modes; |
368
|
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|
|
|
|
} |
369
|
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|
|
|
370
|
|
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|
|
|
|
sub prepare_hints_MODE |
371
|
|
|
|
|
|
|
{ |
372
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
373
|
0
|
|
|
|
|
|
my ( $message, $hints ) = @_; |
374
|
|
|
|
|
|
|
|
375
|
0
|
0
|
|
|
|
|
if( $hints->{target_type} eq "channel" ) { |
376
|
0
|
|
|
|
|
|
$self->prepare_hints_channelmode( $message, $hints ); |
377
|
|
|
|
|
|
|
} |
378
|
|
|
|
|
|
|
} |
379
|
|
|
|
|
|
|
|
380
|
|
|
|
|
|
|
sub prepare_hints_RPL_CHANNELMODEIS |
381
|
|
|
|
|
|
|
{ |
382
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
383
|
0
|
|
|
|
|
|
my ( $message, $hints ) = @_; |
384
|
|
|
|
|
|
|
|
385
|
0
|
|
|
|
|
|
$self->prepare_hints_channelmode( $message, $hints ); |
386
|
|
|
|
|
|
|
} |
387
|
|
|
|
|
|
|
|
388
|
|
|
|
|
|
|
=head2 RPL_WHOREPLY and RPL_ENDOFWHO |
389
|
|
|
|
|
|
|
|
390
|
|
|
|
|
|
|
These messages will be collected up, per channel, by the message gating |
391
|
|
|
|
|
|
|
system, and formed into a single synthesized event called C. |
392
|
|
|
|
|
|
|
|
393
|
|
|
|
|
|
|
Its hints hash will contain an extra key, C, which will be an ARRAY ref |
394
|
|
|
|
|
|
|
containing the lines of the WHO reply. Each line will be a HASH reference |
395
|
|
|
|
|
|
|
containing: |
396
|
|
|
|
|
|
|
|
397
|
|
|
|
|
|
|
=over 8 |
398
|
|
|
|
|
|
|
|
399
|
|
|
|
|
|
|
=item user_ident |
400
|
|
|
|
|
|
|
|
401
|
|
|
|
|
|
|
=item user_host |
402
|
|
|
|
|
|
|
|
403
|
|
|
|
|
|
|
=item user_server |
404
|
|
|
|
|
|
|
|
405
|
|
|
|
|
|
|
=item user_nick |
406
|
|
|
|
|
|
|
|
407
|
|
|
|
|
|
|
=item user_nick_folded |
408
|
|
|
|
|
|
|
|
409
|
|
|
|
|
|
|
=item user_flags |
410
|
|
|
|
|
|
|
|
411
|
|
|
|
|
|
|
=back |
412
|
|
|
|
|
|
|
|
413
|
|
|
|
|
|
|
=cut |
414
|
|
|
|
|
|
|
|
415
|
|
|
|
|
|
|
sub on_gate_done_who |
416
|
|
|
|
|
|
|
{ |
417
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
418
|
0
|
|
|
|
|
|
my ( $message, $hints, $data ) = @_; |
419
|
|
|
|
|
|
|
|
420
|
|
|
|
|
|
|
my @who = map { |
421
|
0
|
|
|
|
|
|
my $b = $_; |
|
0
|
|
|
|
|
|
|
422
|
0
|
|
|
|
|
|
+{ map { $_ => $b->{$_} } qw( user_ident user_host user_server user_nick user_nick_folded user_flags ) } |
|
0
|
|
|
|
|
|
|
423
|
|
|
|
|
|
|
} @$data; |
424
|
|
|
|
|
|
|
|
425
|
0
|
|
|
|
|
|
$self->_invoke_synthetic( "who", $message, $hints, |
426
|
|
|
|
|
|
|
who => \@who, |
427
|
|
|
|
|
|
|
); |
428
|
|
|
|
|
|
|
} |
429
|
|
|
|
|
|
|
|
430
|
|
|
|
|
|
|
=head2 RPL_NAMEREPLY and RPL_ENDOFNAMES |
431
|
|
|
|
|
|
|
|
432
|
|
|
|
|
|
|
These messages will be collected up, per channel, by the message gating |
433
|
|
|
|
|
|
|
system, and formed into a single synthesized event called C. |
434
|
|
|
|
|
|
|
|
435
|
|
|
|
|
|
|
Its hints hash will contain an extra key, C, which will be an ARRAY ref |
436
|
|
|
|
|
|
|
containing the usernames in the channel. Each will be a HASH reference |
437
|
|
|
|
|
|
|
containing: |
438
|
|
|
|
|
|
|
|
439
|
|
|
|
|
|
|
=over 8 |
440
|
|
|
|
|
|
|
|
441
|
|
|
|
|
|
|
=item nick |
442
|
|
|
|
|
|
|
|
443
|
|
|
|
|
|
|
=item flag |
444
|
|
|
|
|
|
|
|
445
|
|
|
|
|
|
|
=back |
446
|
|
|
|
|
|
|
|
447
|
|
|
|
|
|
|
=cut |
448
|
|
|
|
|
|
|
|
449
|
|
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sub on_gate_done_names |
450
|
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{ |
451
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0
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0
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0
|
|
my $self = shift; |
452
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0
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|
my ( $message, $hints, $data ) = @_; |
453
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454
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0
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|
my @names = map { @{ $_->{names} } } @$data; |
|
0
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0
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455
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456
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0
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|
my $prefixflag_re = $self->isupport( 'prefixflag_re' ); |
457
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0
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|
my $re = qr/^($prefixflag_re)?(.*)$/; |
458
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459
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0
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my %names; |
460
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461
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0
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|
|
foreach my $name ( @names ) { |
462
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0
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0
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|
my ( $flag, $nick ) = $name =~ $re or next; |
463
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464
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0
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0
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|
$flag ||= ''; # make sure it's defined |
465
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466
|
0
|
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|
$names{ $self->casefold_name( $nick ) } = { nick => $nick, flag => $flag }; |
467
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|
} |
468
|
|
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|
469
|
0
|
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|
|
|
$self->_invoke_synthetic( "names", $message, $hints, |
470
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|
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|
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|
|
names => \%names, |
471
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|
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); |
472
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} |
473
|
|
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474
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|
=head2 RPL_BANLIST and RPL_ENDOFBANS |
475
|
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|
476
|
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|
|
|
|
|
These messages will be collected up, per channel, by the message gating |
477
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|
system, and formed into a single synthesized event called C. |
478
|
|
|
|
|
|
|
|
479
|
|
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|
Its hints hash will contain an extra key, C, which will be an ARRAY ref |
480
|
|
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|
containing the ban lines. Each line will be a HASH reference containing: |
481
|
|
|
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|
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|
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482
|
|
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|
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|
|
=over 8 |
483
|
|
|
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|
|
|
|
484
|
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=item mask |
485
|
|
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|
486
|
|
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|
User mask of the ban |
487
|
|
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|
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|
488
|
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=item by_nick |
489
|
|
|
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|
|
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|
490
|
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|
=item by_nick_folded |
491
|
|
|
|
|
|
|
|
492
|
|
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|
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|
Nickname of the user who set the ban |
493
|
|
|
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|
494
|
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|
|
|
=item timestamp |
495
|
|
|
|
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|
496
|
|
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|
UNIX timestamp the ban was created |
497
|
|
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|
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|
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|
498
|
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|
=back |
499
|
|
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|
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|
500
|
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|
=cut |
501
|
|
|
|
|
|
|
|
502
|
|
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|
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|
|
sub on_gate_done_bans |
503
|
|
|
|
|
|
|
{ |
504
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
505
|
0
|
|
|
|
|
|
my ( $message, $hints, $data ) = @_; |
506
|
|
|
|
|
|
|
|
507
|
|
|
|
|
|
|
my @bans = map { |
508
|
0
|
|
|
|
|
|
my $b = $_; |
|
0
|
|
|
|
|
|
|
509
|
0
|
|
|
|
|
|
+{ map { $_ => $b->{$_} } qw( mask by_nick by_nick_folded timestamp ) } |
|
0
|
|
|
|
|
|
|
510
|
|
|
|
|
|
|
} @$data; |
511
|
|
|
|
|
|
|
|
512
|
0
|
|
|
|
|
|
$self->_invoke_synthetic( "bans", $message, $hints, |
513
|
|
|
|
|
|
|
bans => \@bans, |
514
|
|
|
|
|
|
|
); |
515
|
|
|
|
|
|
|
} |
516
|
|
|
|
|
|
|
|
517
|
|
|
|
|
|
|
=head2 RPL_MOTD, RPL_MOTDSTART and RPL_ENDOFMOTD |
518
|
|
|
|
|
|
|
|
519
|
|
|
|
|
|
|
These messages will be collected up, by the message gating system, into a |
520
|
|
|
|
|
|
|
synthesized event called C. |
521
|
|
|
|
|
|
|
|
522
|
|
|
|
|
|
|
Its hints hash will contain an extra key, C, which will be an ARRAY ref |
523
|
|
|
|
|
|
|
containing the lines of the MOTD. |
524
|
|
|
|
|
|
|
|
525
|
|
|
|
|
|
|
=cut |
526
|
|
|
|
|
|
|
|
527
|
|
|
|
|
|
|
sub on_gate_done_motd |
528
|
|
|
|
|
|
|
{ |
529
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
530
|
0
|
|
|
|
|
|
my ( $message, $hints, $data ) = @_; |
531
|
|
|
|
|
|
|
|
532
|
|
|
|
|
|
|
$self->_invoke_synthetic( "motd", $message, $hints, |
533
|
0
|
|
|
|
|
|
motd => [ map { $_->{text} } @$data ], |
|
0
|
|
|
|
|
|
|
534
|
|
|
|
|
|
|
); |
535
|
|
|
|
|
|
|
} |
536
|
|
|
|
|
|
|
|
537
|
|
|
|
|
|
|
=head2 RPL_WHOIS* and RPL_ENDOFWHOIS |
538
|
|
|
|
|
|
|
|
539
|
|
|
|
|
|
|
These messages will be collected up, by the message gating system, into a |
540
|
|
|
|
|
|
|
synthesized event called C. |
541
|
|
|
|
|
|
|
|
542
|
|
|
|
|
|
|
Each C reply will be stripped of the standard hints hash keys, |
543
|
|
|
|
|
|
|
leaving whatever remains. Added to this will be a key called C, whose |
544
|
|
|
|
|
|
|
value will be the command name, minus the leading C, and converted |
545
|
|
|
|
|
|
|
to lowercase. |
546
|
|
|
|
|
|
|
|
547
|
|
|
|
|
|
|
=cut |
548
|
|
|
|
|
|
|
|
549
|
|
|
|
|
|
|
sub on_gate_done_whois |
550
|
|
|
|
|
|
|
{ |
551
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
552
|
0
|
|
|
|
|
|
my ( $message, $hints, $data ) = @_; |
553
|
|
|
|
|
|
|
|
554
|
0
|
|
|
|
|
|
my @whois; |
555
|
|
|
|
|
|
|
my $channels; |
556
|
|
|
|
|
|
|
|
557
|
0
|
|
|
|
|
|
foreach my $h ( @$data ) { |
558
|
|
|
|
|
|
|
# Just delete all the standard hints from each one |
559
|
0
|
|
|
|
|
|
delete @{$h}{keys %$hints}; |
|
0
|
|
|
|
|
|
|
560
|
0
|
|
|
|
|
|
( $h->{whois} = lc delete $h->{command} ) =~ s/^rpl_whois//; |
561
|
|
|
|
|
|
|
|
562
|
|
|
|
|
|
|
# Combine all the 'channels' results into one list |
563
|
0
|
0
|
|
|
|
|
if( $h->{whois} eq "channels" ) { |
564
|
0
|
0
|
|
|
|
|
if( $channels ) { |
565
|
0
|
|
|
|
|
|
push @{$channels->{channels}}, @{$h->{channels}}; |
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
566
|
0
|
|
|
|
|
|
next; |
567
|
|
|
|
|
|
|
} |
568
|
0
|
|
|
|
|
|
$channels = $h; |
569
|
|
|
|
|
|
|
} |
570
|
|
|
|
|
|
|
|
571
|
0
|
|
|
|
|
|
push @whois, $h; |
572
|
|
|
|
|
|
|
} |
573
|
|
|
|
|
|
|
|
574
|
0
|
|
|
|
|
|
$self->_invoke_synthetic( "whois", $message, $hints, whois => \@whois ); |
575
|
|
|
|
|
|
|
} |
576
|
|
|
|
|
|
|
|
577
|
|
|
|
|
|
|
=head1 AUTHOR |
578
|
|
|
|
|
|
|
|
579
|
|
|
|
|
|
|
Paul Evans |
580
|
|
|
|
|
|
|
|
581
|
|
|
|
|
|
|
=cut |
582
|
|
|
|
|
|
|
|
583
|
|
|
|
|
|
|
0x55AA; |