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elmex |
1.1 |
package Net::IRC3::Util; |
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use strict; |
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elmex |
1.9 |
no warnings; |
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elmex |
1.1 |
use Exporter; |
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our @ISA = qw/Exporter/; |
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our @EXPORT_OK = |
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qw(mk_msg parse_irc_msg split_prefix prefix_nick |
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elmex |
1.12 |
decode_ctcp encode_ctcp filter_ctcp_text_attr prefix_user prefix_host |
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elmex |
1.7 |
rfc_code_to_name); |
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elmex |
1.1 |
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=head1 NAME |
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Net::IRC3::Util - Common utilities that help with IRC protocol handling |
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elmex |
1.2 |
=head1 SYNOPSIS |
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use Net::IRC3 qw/parse_irc_msg mk_msg/; |
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elmex |
1.7 |
my $msgdata = mk_msg (undef, PRIVMSG => "my hands glow!", "mcmanus"); |
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elmex |
1.2 |
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elmex |
1.1 |
=head1 FUNCTIONS |
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These are some utility functions that might come in handy when |
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handling the IRC protocol. |
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You can export these with eg.: |
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use Net::IRC3 qw/parse_irc_msg/; |
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=over 4 |
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=item B<parse_irc_msg ($ircline)> |
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This method parses the C<$ircline>, which is one line of the IRC protocol |
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without the trailing "\015\012". |
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It returns a hash which has the following entrys: |
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=over 4 |
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=item prefix |
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The message prefix. |
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=item command |
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The IRC command. |
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=item params |
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The parameters to the IRC command in a array reference, |
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this includes the trailing parameter (the one after the ':' or |
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the 14th parameter). |
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=item trailing |
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This is set if there was a trailing parameter (the one after the ':' or |
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the 14th parameter). |
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=back |
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=cut |
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sub parse_irc_msg { |
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my ($msg) = @_; |
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my $cmd; |
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my $pref; |
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my $t; |
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my @a; |
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my $p = $msg =~ s/^(:([^ ]+)[ ])?([A-Za-z]+|\d{3})//; |
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$pref = $2; |
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$cmd = $3; |
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my $i = 0; |
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while ($msg =~ s/^[ ]([^ :\015\012\0][^ \015\012\0]*)//) { |
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push @a, $1 if defined $1; |
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if (++$i > 13) { last; } |
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} |
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if ($i == 14) { |
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if ($msg =~ s/^[ ]:?([^\015\012\0]*)//) { |
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$t = $1 if $1 ne ""; |
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} |
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} else { |
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if ($msg =~ s/^[ ]:([^\015\012\0]*)//) { |
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$t = $1 if $1 ne ""; |
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} |
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} |
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push @a, $t if defined $t; |
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my $m = { prefix => $pref, command => $cmd, params => \@a, trailing => $t }; |
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return $p ? $m : undef; |
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} |
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=item B<mk_msg ($prefix, $command, $trailing, @params)> |
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This function assembles a IRC message. The generated |
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message will look like (pseudo code!) |
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:<prefix> <command> <params> :<trail> |
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Please refer to RFC 2812 how IRC messages normally look like. |
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The prefix and the trailing string will be omitted if they are C<undef>. |
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EXAMPLES: |
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mk_msg (undef, "PRIVMSG", "you suck!", "magnus"); |
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# will return: "PRIVMSG magnus :you suck!\015\012" |
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mk_msg (undef, "JOIN", undef, "#test"); |
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elmex |
1.5 |
# will return: "JOIN #test\015\012" |
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elmex |
1.1 |
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=cut |
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sub mk_msg { |
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my ($prefix, $command, $trail, @params) = @_; |
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my $msg = ""; |
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$msg .= defined $prefix ? ":$prefix " : ""; |
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$msg .= "$command"; |
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# FIXME: params must be counted, and if > 13 they have to be |
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# concationated with $trail |
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map { $msg .= " $_" } @params; |
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$msg .= defined $trail ? " :$trail" : ""; |
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$msg .= "\015\012"; |
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return $msg; |
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} |
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elmex |
1.8 |
=item B<decode_ctcp ($line)> |
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TODO |
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elmex |
1.1 |
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=cut |
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elmex |
1.12 |
my @_ctcp_lowlevel_escape = ("\000", "0", "\012", "n", "\015", "r", "\020", "\020"); |
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sub unescape_lowlevel { |
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my ($data) = @_; |
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my %map = reverse @_ctcp_lowlevel_escape; |
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$data =~ s/\020(.)/defined $map{$1} ? $map{$1} : $1/ge; |
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$data |
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} |
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sub escape_lowlevel { |
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my ($data) = @_; |
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my %map = @_ctcp_lowlevel_escape; |
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$data =~ s/([\000\012\015\020])/"\020$map{$1}"/ge; |
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$data |
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} |
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sub unescape_ctcp { |
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my ($data) = @_; |
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$data =~ s/\\(.)/$1 eq 'a' ? "\001" : ($1 eq "\\" ? "\\" : $1)/eg; |
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$data |
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} |
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sub escape_ctcp { |
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my ($data) = @_; |
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$data =~ s/([\\\001])/$1 eq "\001" ? "\\a" : "\\\\"/eg; |
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$data |
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} |
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=item B<decode_ctcp ($trailing)> |
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This function decodes the C<$trailing> part of an IRC message. |
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It will first unescape the lower layer, extract CTCP messages |
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and then return a list with two elements: the line without the ctcp messages |
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and an array reference which contains array references of CTCP messages. |
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Those CTCP message array references will have the CTCP message tag as |
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first element (eg. "VERSION") and the rest of the CTCP message as the second |
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element. |
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=cut |
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elmex |
1.1 |
sub decode_ctcp { |
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elmex |
1.6 |
my ($line) = @_; |
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elmex |
1.1 |
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elmex |
1.12 |
$line = unescape_lowlevel ($line); |
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my @ctcp; |
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elmex |
1.6 |
while ($line =~ /\G\001([^\001]*)\001/g) { |
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elmex |
1.12 |
my $msg = unescape_ctcp ($1); |
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my ($tag, $data) = split / /, $msg, 2; |
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push @ctcp, [$tag, $data]; |
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elmex |
1.6 |
} |
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elmex |
1.1 |
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elmex |
1.6 |
$line =~ s/\001[^\001]*\001//g; |
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elmex |
1.1 |
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elmex |
1.12 |
return ($line, \@ctcp) |
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} |
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=item B<encode_ctcp (@msg)> |
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This function encodes a ctcp message for the trailing part of a NOTICE |
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or PRIVMSG. C<@msg> is an array of strings or array references. |
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If an array reference occurs in the C<@msg> array it's first |
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element will be interpreted as CTCP TAG (eg. one of PING, VERSION, .. whatever) |
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the rest of the array ref will be appended to the tag and seperated by |
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spaces. |
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All parts of the message will be contatenated and lowlevel quoted. |
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That means you can embed _any_ character from 0 to 255 in this message (thats |
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what the lowlevel quoting allows). |
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=cut |
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sub encode_ctcp { |
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my (@args) = @_; |
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escape_lowlevel ( |
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join "", map { |
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ref $_ |
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? "\001" . escape_ctcp (join " ", @$_) . "\001" |
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: $_ |
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} @args |
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) |
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elmex |
1.6 |
} |
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elmex |
1.1 |
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elmex |
1.8 |
=item B<filter_ctcp_text_attr ($line, $cb)> |
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TODO |
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=cut |
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elmex |
1.6 |
# implemented after the below CTCP spec, but |
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# doesnt seem to be used by anyone... so it's untested. |
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sub filter_ctcp_text_attr { |
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my ($line, $cb) = @_; |
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elmex |
1.10 |
return unless $cb; |
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elmex |
1.6 |
$line =~ s/\006([BVUSI])/{warn "FIL\n"; my $c = $cb->($1); defined $c ? $c : "\006$1"}/ieg; |
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$line =~ s/\006CA((?:I[0-9A-F]|#[0-9A-F]{3}){2})/{my $c = $cb->($1); defined $c ? $c : "\006CA$1"}/ieg; |
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$line =~ s/\006C([FB])(I[0-9A-F]|#[0-9A-F]{3})/{my $c = $cb->($1, $2); defined $c ? $c : "\006C$1$2"}/ieg; |
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$line =~ s/\006CX([AFB])/{my $c = $cb->($1); defined $c ? $c : "\006CX$1"}/ieg; |
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return $line; |
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elmex |
1.1 |
} |
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=item B<split_prefix ($prefix)> |
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This function splits an IRC user prefix as described by RFC 2817 |
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into the three parts: nickname, user and host. Which will be |
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returned as a list with that order. |
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C<$prefix> can also be a hash like it is returned by C<parse_irc_msg>. |
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=cut |
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sub split_prefix { |
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my ($prfx) = @_; |
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if (ref ($prfx) eq 'HASH') { |
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$prfx = $prfx->{prefix}; |
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} |
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elmex |
1.11 |
# this splitting does indeed use the servername as nickname, but there |
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# is no way for a client to distinguish. |
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$prfx =~ m/^\s*([^!]*)(?:!([^@]*))?(?:@(.*?))?\s*$/; |
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elmex |
1.1 |
return ($1, $2, $3); |
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} |
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=item B<prefix_nick ($prefix)> |
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A shortcut to extract the nickname from the C<$prefix>. |
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C<$prefix> can also be a hash like it is returned by C<parse_irc_msg>. |
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=cut |
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sub prefix_nick { |
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my ($prfx) = @_; |
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return (split_prefix ($prfx))[0]; |
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} |
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=item B<prefix_user ($prefix)> |
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A shortcut to extract the username from the C<$prefix>. |
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C<$prefix> can also be a hash like it is returned by C<parse_irc_msg>. |
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=cut |
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sub prefix_user { |
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my ($prfx) = @_; |
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return (split_prefix ($prfx))[1]; |
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} |
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=item B<prefix_host ($prefix)> |
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A shortcut to extract the hostname from the C<$prefix>. |
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C<$prefix> can also be a hash like it is returned by C<parse_irc_msg>. |
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=cut |
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sub prefix_host { |
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elmex |
1.8 |
my ($prfx) = @_; |
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elmex |
1.1 |
return (split_prefix ($prfx))[2]; |
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} |
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elmex |
1.7 |
=item B<rfc_code_to_name ($code)> |
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This function is a interface to the internal mapping or numeric |
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replies to the reply name in RFC 2812 (which you may also consult). |
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C<$code> is returned if no name for C<$code> exists |
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(as some server may extended the protocol). |
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elmex |
1.8 |
=back |
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elmex |
1.7 |
=cut |
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our %RFC_NUMCODE_MAP = ( |
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'001' => 'RPL_WELCOME', |
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'002' => 'RPL_YOURHOST', |
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'003' => 'RPL_CREATED', |
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'004' => 'RPL_MYINFO', |
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'005' => 'RPL_BOUNCE', |
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'200' => 'RPL_TRACELINK', |
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'201' => 'RPL_TRACECONNECTING', |
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'202' => 'RPL_TRACEHANDSHAKE', |
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'203' => 'RPL_TRACEUNKNOWN', |
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'204' => 'RPL_TRACEOPERATOR', |
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'205' => 'RPL_TRACEUSER', |
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'206' => 'RPL_TRACESERVER', |
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'207' => 'RPL_TRACESERVICE', |
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'208' => 'RPL_TRACENEWTYPE', |
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'209' => 'RPL_TRACECLASS', |
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'210' => 'RPL_TRACERECONNECT', |
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'211' => 'RPL_STATSLINKINFO', |
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'212' => 'RPL_STATSCOMMANDS', |
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'219' => 'RPL_ENDOFSTATS', |
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'221' => 'RPL_UMODEIS', |
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'233' => 'RPL_SERVICE', |
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'234' => 'RPL_SERVLIST', |
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'235' => 'RPL_SERVLISTEND', |
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'242' => 'RPL_STATSUPTIME', |
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'243' => 'RPL_STATSOLINE', |
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'250' => 'RPL_STATSDLINE', |
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'251' => 'RPL_LUSERCLIENT', |
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'252' => 'RPL_LUSEROP', |
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'253' => 'RPL_LUSERUNKNOWN', |
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'254' => 'RPL_LUSERCHANNELS', |
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'255' => 'RPL_LUSERME', |
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'256' => 'RPL_ADMINME', |
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'257' => 'RPL_ADMINLOC1', |
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'258' => 'RPL_ADMINLOC2', |
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'259' => 'RPL_ADMINEMAIL', |
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'261' => 'RPL_TRACELOG', |
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'262' => 'RPL_TRACEEND', |
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'263' => 'RPL_TRYAGAIN', |
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'301' => 'RPL_AWAY', |
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'302' => 'RPL_USERHOST', |
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'303' => 'RPL_ISON', |
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'305' => 'RPL_UNAWAY', |
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'306' => 'RPL_NOWAWAY', |
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'311' => 'RPL_WHOISUSER', |
| 367 |
|
|
'312' => 'RPL_WHOISSERVER', |
| 368 |
|
|
'313' => 'RPL_WHOISOPERATOR', |
| 369 |
|
|
'314' => 'RPL_WHOWASUSER', |
| 370 |
|
|
'315' => 'RPL_ENDOFWHO', |
| 371 |
|
|
'317' => 'RPL_WHOISIDLE', |
| 372 |
|
|
'318' => 'RPL_ENDOFWHOIS', |
| 373 |
|
|
'319' => 'RPL_WHOISCHANNELS', |
| 374 |
|
|
'321' => 'RPL_LISTSTART', |
| 375 |
|
|
'322' => 'RPL_LIST', |
| 376 |
|
|
'323' => 'RPL_LISTEND', |
| 377 |
|
|
'324' => 'RPL_CHANNELMODEIS', |
| 378 |
|
|
'325' => 'RPL_UNIQOPIS', |
| 379 |
|
|
'331' => 'RPL_NOTOPIC', |
| 380 |
|
|
'332' => 'RPL_TOPIC', |
| 381 |
|
|
'341' => 'RPL_INVITING', |
| 382 |
|
|
'342' => 'RPL_SUMMONING', |
| 383 |
|
|
'346' => 'RPL_INVITELIST', |
| 384 |
|
|
'347' => 'RPL_ENDOFINVITELIST', |
| 385 |
|
|
'348' => 'RPL_EXCEPTLIST', |
| 386 |
|
|
'349' => 'RPL_ENDOFEXCEPTLIST', |
| 387 |
|
|
'351' => 'RPL_VERSION', |
| 388 |
|
|
'352' => 'RPL_WHOREPLY', |
| 389 |
|
|
'353' => 'RPL_NAMREPLY', |
| 390 |
|
|
'364' => 'RPL_LINKS', |
| 391 |
|
|
'365' => 'RPL_ENDOFLINKS', |
| 392 |
|
|
'366' => 'RPL_ENDOFNAMES', |
| 393 |
|
|
'367' => 'RPL_BANLIST', |
| 394 |
|
|
'368' => 'RPL_ENDOFBANLIST', |
| 395 |
|
|
'369' => 'RPL_ENDOFWHOWAS', |
| 396 |
|
|
'371' => 'RPL_INFO', |
| 397 |
|
|
'372' => 'RPL_MOTD', |
| 398 |
|
|
'374' => 'RPL_ENDOFINFO', |
| 399 |
|
|
'375' => 'RPL_MOTDSTART', |
| 400 |
|
|
'376' => 'RPL_ENDOFMOTD', |
| 401 |
|
|
'381' => 'RPL_YOUREOPER', |
| 402 |
|
|
'382' => 'RPL_REHASHING', |
| 403 |
|
|
'383' => 'RPL_YOURESERVICE', |
| 404 |
|
|
'384' => 'RPL_MYPORTIS', |
| 405 |
|
|
'391' => 'RPL_TIME', |
| 406 |
|
|
'392' => 'RPL_USERSSTART', |
| 407 |
|
|
'393' => 'RPL_USERS', |
| 408 |
|
|
'394' => 'RPL_ENDOFUSERS', |
| 409 |
|
|
'395' => 'RPL_NOUSERS', |
| 410 |
|
|
'401' => 'ERR_NOSUCHNICK', |
| 411 |
|
|
'402' => 'ERR_NOSUCHSERVER', |
| 412 |
|
|
'403' => 'ERR_NOSUCHCHANNEL', |
| 413 |
|
|
'404' => 'ERR_CANNOTSENDTOCHAN', |
| 414 |
|
|
'405' => 'ERR_TOOMANYCHANNELS', |
| 415 |
|
|
'406' => 'ERR_WASNOSUCHNICK', |
| 416 |
|
|
'407' => 'ERR_TOOMANYTARGETS', |
| 417 |
|
|
'408' => 'ERR_NOSUCHSERVICE', |
| 418 |
|
|
'409' => 'ERR_NOORIGIN', |
| 419 |
|
|
'411' => 'ERR_NORECIPIENT', |
| 420 |
|
|
'412' => 'ERR_NOTEXTTOSEND', |
| 421 |
|
|
'413' => 'ERR_NOTOPLEVEL', |
| 422 |
|
|
'414' => 'ERR_WILDTOPLEVEL', |
| 423 |
|
|
'415' => 'ERR_BADMASK', |
| 424 |
|
|
'421' => 'ERR_UNKNOWNCOMMAND', |
| 425 |
|
|
'422' => 'ERR_NOMOTD', |
| 426 |
|
|
'423' => 'ERR_NOADMININFO', |
| 427 |
|
|
'424' => 'ERR_FILEERROR', |
| 428 |
|
|
'431' => 'ERR_NONICKNAMEGIVEN', |
| 429 |
|
|
'432' => 'ERR_ERRONEUSNICKNAME', |
| 430 |
|
|
'433' => 'ERR_NICKNAMEINUSE', |
| 431 |
|
|
'436' => 'ERR_NICKCOLLISION', |
| 432 |
|
|
'437' => 'ERR_UNAVAILRESOURCE', |
| 433 |
|
|
'441' => 'ERR_USERNOTINCHANNEL', |
| 434 |
|
|
'442' => 'ERR_NOTONCHANNEL', |
| 435 |
|
|
'443' => 'ERR_USERONCHANNEL', |
| 436 |
|
|
'444' => 'ERR_NOLOGIN', |
| 437 |
|
|
'445' => 'ERR_SUMMONDISABLED', |
| 438 |
|
|
'446' => 'ERR_USERSDISABLED', |
| 439 |
|
|
'451' => 'ERR_NOTREGISTERED', |
| 440 |
|
|
'461' => 'ERR_NEEDMOREPARAMS', |
| 441 |
|
|
'462' => 'ERR_ALREADYREGISTRED', |
| 442 |
|
|
'463' => 'ERR_NOPERMFORHOST', |
| 443 |
|
|
'464' => 'ERR_PASSWDMISMATCH', |
| 444 |
|
|
'465' => 'ERR_YOUREBANNEDCREEP', |
| 445 |
|
|
'466' => 'ERR_YOUWILLBEBANNED', |
| 446 |
|
|
'467' => 'ERR_KEYSET', |
| 447 |
|
|
'471' => 'ERR_CHANNELISFULL', |
| 448 |
|
|
'472' => 'ERR_UNKNOWNMODE', |
| 449 |
|
|
'473' => 'ERR_INVITEONLYCHAN', |
| 450 |
|
|
'474' => 'ERR_BANNEDFROMCHAN', |
| 451 |
|
|
'475' => 'ERR_BADCHANNELKEY', |
| 452 |
|
|
'476' => 'ERR_BADCHANMASK', |
| 453 |
|
|
'477' => 'ERR_NOCHANMODES', |
| 454 |
|
|
'478' => 'ERR_BANLISTFULL', |
| 455 |
|
|
'481' => 'ERR_NOPRIVILEGES', |
| 456 |
|
|
'482' => 'ERR_CHANOPRIVSNEEDED', |
| 457 |
|
|
'483' => 'ERR_CANTKILLSERVER', |
| 458 |
|
|
'484' => 'ERR_RESTRICTED', |
| 459 |
|
|
'485' => 'ERR_UNIQOPPRIVSNEEDED', |
| 460 |
|
|
'491' => 'ERR_NOOPERHOST', |
| 461 |
|
|
'492' => 'ERR_NOSERVICEHOST', |
| 462 |
|
|
'501' => 'ERR_UMODEUNKNOWNFLAG', |
| 463 |
|
|
'502' => 'ERR_USERSDONTMATCH', |
| 464 |
|
|
); |
| 465 |
|
|
|
| 466 |
|
|
sub rfc_code_to_name { |
| 467 |
|
|
my ($code) = @_; |
| 468 |
|
|
return $RFC_NUMCODE_MAP{$code} || $code; |
| 469 |
|
|
} |
| 470 |
|
|
|
| 471 |
elmex |
1.1 |
=head1 AUTHOR |
| 472 |
|
|
|
| 473 |
|
|
Robin Redeker, C<< <elmex@ta-sa.org> >> |
| 474 |
|
|
|
| 475 |
|
|
=head1 SEE ALSO |
| 476 |
|
|
|
| 477 |
elmex |
1.6 |
Internet Relay Chat Client To Client Protocol from February 2, 1997 |
| 478 |
|
|
http://www.invlogic.com/irc/ctcp.html |
| 479 |
|
|
|
| 480 |
elmex |
1.1 |
RFC 2812 - Internet Relay Chat: Client Protocol |
| 481 |
|
|
|
| 482 |
|
|
=head1 COPYRIGHT & LICENSE |
| 483 |
|
|
|
| 484 |
elmex |
1.3 |
Copyright 2006 Robin Redeker, all rights reserved. |
| 485 |
elmex |
1.1 |
|
| 486 |
|
|
This program is free software; you can redistribute it and/or modify it |
| 487 |
|
|
under the same terms as Perl itself. |
| 488 |
|
|
|
| 489 |
|
|
=cut |
| 490 |
|
|
|
| 491 |
|
|
1; |
