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pbot/PBot/NickList.pm
2021-07-10 15:00:22 -07:00

556 lines
18 KiB
Perl

# File: NickList.pm
#
# Purpose: Maintains lists of nicks currently present in channels.
# Used to retrieve list of channels a nick is present in or to
# determine if a nick is present in a channel.
# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
# SPDX-License-Identifier: MIT
package PBot::NickList;
use parent 'PBot::Class';
use PBot::Imports;
use Text::Levenshtein qw/fastdistance/;
use Data::Dumper;
$Data::Dumper::Sortkeys = 1;
use Time::HiRes qw/gettimeofday/;
use Time::Duration qw/concise ago/;
use Getopt::Long qw/GetOptionsFromArray/;
sub initialize {
my ($self, %conf) = @_;
# nicklist hash
$self->{nicklist} = {};
# nicklist debug registry entry
$self->{pbot}->{registry}->add_default('text', 'nicklist', 'debug', '0');
# nicklist bot command
$self->{pbot}->{commands}->register(sub { $self->cmd_nicklist(@_) }, "nicklist", 1);
# handlers for various IRC events
# TODO: track mode changes to update user flags
# Update: turns out that IRCHandler's on_mode() is doing this already -- we need to make that
# emit a mode-change event or some such and register a handler for it here.
$self->{pbot}->{event_dispatcher}->register_handler('irc.namreply', sub { $self->on_namreply(@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.join', sub { $self->on_join(@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.part', sub { $self->on_part(@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.quit', sub { $self->on_quit(@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.kick', sub { $self->on_kick(@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.nick', sub { $self->on_nickchange(@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.public', sub { $self->on_activity(@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.caction', sub { $self->on_activity(@_) });
# handlers for the bot itself joining/leaving channels
$self->{pbot}->{event_dispatcher}->register_handler('pbot.join', sub { $self->on_self_join(@_) });
$self->{pbot}->{event_dispatcher}->register_handler('pbot.part', sub { $self->on_self_part(@_) });
}
sub cmd_nicklist {
my ($self, $context) = @_;
my $usage = "Usage: nicklist (<channel [nick]> | <nick>) [-sort <by>] [-hostmask] [-join]; -hostmask shows hostmasks instead of nicks; -join includes join time";
my $getopt_error;
local $SIG{__WARN__} = sub {
$getopt_error = shift;
chomp $getopt_error;
};
Getopt::Long::Configure("bundling_override");
my $sort_method = 'nick';
my $full_hostmask = 0;
my $include_join = 0;
my @args = $self->{pbot}->{interpreter}->split_line($context->{arguments}, strip_quotes => 1);
GetOptionsFromArray(
\@args,
'sort|s=s' => \$sort_method,
'hostmask|hm' => \$full_hostmask,
'join|j' => \$include_join,
);
return "$getopt_error; $usage" if defined $getopt_error;
return "Too many arguments -- $usage" if @args > 2;
return $usage if @args == 0 or not length $args[0];
my %sort = (
'spoken' => sub {
if ($_[1] eq '+') {
return $_[0]->{$b}->{timestamp} <=> $_[0]->{$a}->{timestamp};
} else {
return $_[0]->{$a}->{timestamp} <=> $_[0]->{$b}->{timestamp};
}
},
'join' => sub {
if ($_[1] eq '+') {
return $_[0]->{$b}->{join} <=> $_[0]->{$a}->{join};
} else {
return $_[0]->{$a}->{join} <=> $_[0]->{$b}->{join};
}
},
'host' => sub {
if ($_[1] eq '+') {
return lc $_[0]->{$a}->{host} cmp lc $_[0]->{$b}->{host};
} else {
return lc $_[0]->{$b}->{host} cmp lc $_[0]->{$a}->{host};
}
},
'nick' => sub {
if ($_[1] eq '+') {
return lc $_[0]->{$a}->{nick} cmp lc $_[0]->{$b}->{nick};
} else {
return lc $_[0]->{$b}->{nick} cmp lc $_[0]->{$a}->{nick};
}
},
);
my $sort_direction = '+';
if ($sort_method =~ s/^(\+|\-)//) {
$sort_direction = $1;
}
if (not exists $sort{$sort_method}) {
return "Invalid sort method '$sort_method'; valid methods are: " . join(', ', sort keys %sort) . "; prefix with - to invert sort direction.";
}
# insert from channel as first argument if first argument is not a channel
if ($args[0] !~ /^#/) {
unshift @args, $context->{from};
}
# ensure channel has a nicklist
if (not exists $self->{nicklist}->{lc $args[0]}) {
return "No nicklist for channel $args[0].";
}
my $result;
if (@args == 1) {
# nicklist for a specific channel
my $count = keys %{$self->{nicklist}->{lc $args[0]}};
$result = "$count nick" . ($count == 1 ? '' : 's') . " in $args[0]:\n";
foreach my $entry (sort { $sort{$sort_method}->($self->{nicklist}->{lc $args[0]}, $sort_direction) } keys %{$self->{nicklist}->{lc $args[0]}}) {
if ($full_hostmask) {
$result .= " $self->{nicklist}->{lc $args[0]}->{$entry}->{hostmask}";
} else {
$result .= " $self->{nicklist}->{lc $args[0]}->{$entry}->{nick}";
}
my $sep = ': ';
if ($self->{nicklist}->{lc $args[0]}->{$entry}->{timestamp} > 0) {
my $duration = concise ago (gettimeofday - $self->{nicklist}->{lc $args[0]}->{$entry}->{timestamp});
$result .= "${sep}last spoken $duration";
$sep = ', ';
}
if ($include_join and $self->{nicklist}->{lc $args[0]}->{$entry}->{join} > 0) {
my $duration = concise ago (gettimeofday - $self->{nicklist}->{lc $args[0]}->{$entry}->{join});
$result .= "${sep}joined $duration";
$sep = ', ';
}
foreach my $key (sort keys %{$self->{nicklist}->{lc $args[0]}->{$entry}}) {
next if grep { $key eq $_ } qw/nick user host join timestamp hostmask/;
if ($self->{nicklist}->{lc $args[0]}->{$entry}->{$key} == 1) {
$result .= "$sep$key";
} else {
$result .= "$sep$key => $self->{nicklist}->{lc $args[0]}->{$entry}->{$key}";
}
$sep = ', ';
}
$result .= "\n";
}
} else {
# nicklist for a specific user
if (not exists $self->{nicklist}->{lc $args[0]}->{lc $args[1]}) {
return "No such nick $args[1] in channel $args[0].";
}
$result = "Nicklist information for $self->{nicklist}->{lc $args[0]}->{lc $args[1]}->{hostmask} in $args[0]: ";
my $sep = '';
if ($self->{nicklist}->{lc $args[0]}->{lc $args[1]}->{timestamp} > 0) {
my $duration = concise ago (gettimeofday - $self->{nicklist}->{lc $args[0]}->{lc $args[1]}->{timestamp});
$result .= "last spoken $duration";
$sep = ', ';
}
if ($self->{nicklist}->{lc $args[0]}->{lc $args[1]}->{join} > 0) {
my $duration = concise ago (gettimeofday - $self->{nicklist}->{lc $args[0]}->{lc $args[1]}->{join});
$result .= "${sep}joined $duration";
$sep = ', ';
}
foreach my $key (sort keys %{$self->{nicklist}->{lc $args[0]}->{lc $args[1]}}) {
next if grep { $key eq $_ } qw/nick user host join timestamp hostmask/;
$result .= "$sep$key => $self->{nicklist}->{lc $args[0]}->{lc $args[1]}->{$key}";
$sep = ', ';
}
$result .= 'no details' if $sep eq '';
}
return $result;
}
sub update_timestamp {
my ($self, $channel, $nick) = @_;
my $orig_nick = $nick;
$channel = lc $channel;
$nick = lc $nick;
if (exists $self->{nicklist}->{$channel} and exists $self->{nicklist}->{$channel}->{$nick}) { $self->{nicklist}->{$channel}->{$nick}->{timestamp} = gettimeofday; }
else {
$self->{pbot}->{logger}->log("Adding nick '$orig_nick' to channel '$channel'\n") if $self->{pbot}->{registry}->get_value('nicklist', 'debug');
$self->{nicklist}->{$channel}->{$nick} = {nick => $orig_nick, timestamp => scalar gettimeofday};
}
}
sub remove_channel {
my ($self, $channel) = @_;
delete $self->{nicklist}->{lc $channel};
}
sub add_nick {
my ($self, $channel, $nick) = @_;
if (not exists $self->{nicklist}->{lc $channel}->{lc $nick}) {
$self->{pbot}->{logger}->log("Adding nick '$nick' to channel '$channel'\n") if $self->{pbot}->{registry}->get_value('nicklist', 'debug');
$self->{nicklist}->{lc $channel}->{lc $nick} = {nick => $nick, timestamp => 0};
}
}
sub remove_nick {
my ($self, $channel, $nick) = @_;
$self->{pbot}->{logger}->log("Removing nick '$nick' from channel '$channel'\n") if $self->{pbot}->{registry}->get_value('nicklist', 'debug');
delete $self->{nicklist}->{lc $channel}->{lc $nick};
}
sub get_channels {
my ($self, $nick) = @_;
$nick = lc $nick;
my @channels;
foreach my $channel (keys %{$self->{nicklist}}) {
if (exists $self->{nicklist}->{$channel}->{$nick}) {
push @channels, $channel;
}
}
return \@channels;
}
sub get_nicks {
my ($self, $channel) = @_;
$channel = lc $channel;
my @nicks;
return @nicks if not exists $self->{nicklist}->{$channel};
foreach my $nick (keys %{$self->{nicklist}->{$channel}}) {
push @nicks, $self->{nicklist}->{$channel}->{$nick}->{nick};
}
return @nicks;
}
sub set_meta {
my ($self, $channel, $nick, $key, $value) = @_;
$channel = lc $channel;
$nick = lc $nick;
if (not exists $self->{nicklist}->{$channel} or not exists $self->{nicklist}->{$channel}->{$nick}) {
if (exists $self->{nicklist}->{$channel} and $nick =~ m/[*?]/) {
my $regex = quotemeta $nick;
$regex =~ s/\\\*/.*?/g;
$regex =~ s/\\\?/./g;
my $found = 0;
foreach my $n (keys %{$self->{nicklist}->{$channel}}) {
if (exists $self->{nicklist}->{$channel}->{$n}->{hostmask} and $self->{nicklist}->{$channel}->{$n}->{hostmask} =~ m/$regex/i) {
$self->{nicklist}->{$channel}->{$n}->{$key} = $value;
$found++;
}
}
return $found;
} else {
$self->{pbot}->{logger}->log("Nicklist: Attempt to set invalid meta ($key => $value) for $nick in $channel.\n");
return 0;
}
}
$self->{nicklist}->{$channel}->{$nick}->{$key} = $value;
return 1;
}
sub delete_meta {
my ($self, $channel, $nick, $key) = @_;
$channel = lc $channel;
$nick = lc $nick;
if (not exists $self->{nicklist}->{$channel} or not exists $self->{nicklist}->{$channel}->{$nick} or not exists $self->{nicklist}->{$channel}->{$nick}->{$key}) {
return undef;
}
return delete $self->{nicklist}->{$channel}->{$nick}->{$key};
}
sub get_meta {
my ($self, $channel, $nick, $key) = @_;
$channel = lc $channel;
$nick = lc $nick;
if (not exists $self->{nicklist}->{$channel} or not exists $self->{nicklist}->{$channel}->{$nick} or not exists $self->{nicklist}->{$channel}->{$nick}->{$key}) {
return undef;
}
return $self->{nicklist}->{$channel}->{$nick}->{$key};
}
sub is_present_any_channel {
my ($self, $nick) = @_;
$nick = lc $nick;
foreach my $channel (keys %{$self->{nicklist}}) {
if (exists $self->{nicklist}->{$channel}->{$nick}) {
return $self->{nicklist}->{$channel}->{$nick}->{nick};
}
}
return 0;
}
sub is_present {
my ($self, $channel, $nick) = @_;
$channel = lc $channel;
$nick = lc $nick;
if (exists $self->{nicklist}->{$channel} and exists $self->{nicklist}->{$channel}->{$nick}) {
return $self->{nicklist}->{$channel}->{$nick}->{nick};
} else {
return 0;
}
}
sub is_present_similar {
my ($self, $channel, $nick, $similarity) = @_;
$channel = lc $channel;
$nick = lc $nick;
return 0 if not exists $self->{nicklist}->{$channel};
return $self->{nicklist}->{$channel}->{$nick}->{nick} if $self->is_present($channel, $nick);
if ($nick =~ m/(?:^\$|\s)/) {
# not nick-like
# TODO: why do we have this check? added log message to find out when/if it happens
$self->{pbot}->{logger}->log("NickList::is_present_similiar [$channel] [$nick] is not nick-like?\n");
return 0;
}
my $percentage;
if (defined $similarity) {
$percentage = $similarity;
} else {
$percentage = $self->{pbot}->{registry}->get_value('interpreter', 'nick_similarity') // 0.20;
}
my $now = gettimeofday;
foreach my $person (sort { $self->{nicklist}->{$channel}->{$b}->{timestamp} <=> $self->{nicklist}->{$channel}->{$a}->{timestamp} } keys %{$self->{nicklist}->{$channel}}) {
if ($now - $self->{nicklist}->{$channel}->{$person}->{timestamp} > 3600) {
# if it has been 1 hour since this person has last spoken, the similar nick
# is probably not intended for them.
return 0;
}
my $distance = fastdistance($nick, $person);
my $length = length $nick > length $person ? length $nick : length $person;
if ($length != 0 && $distance / $length <= $percentage) {
return $self->{nicklist}->{$channel}->{$person}->{nick};
}
}
return 0;
}
sub random_nick {
my ($self, $channel) = @_;
$channel = lc $channel;
if (exists $self->{nicklist}->{$channel}) {
my $now = gettimeofday;
# build list of nicks that have spoken within the last 2 hours
my @nicks = grep { $now - $self->{nicklist}->{$channel}->{$_}->{timestamp} < 3600 * 2 } keys %{$self->{nicklist}->{$channel}};
# pick a random nick from tha list
my $nick = $nicks[rand @nicks];
# return its canonical name
return $self->{nicklist}->{$channel}->{$nick}->{nick};
} else {
return undef;
}
}
sub on_namreply {
my ($self, $event_type, $event) = @_;
my ($channel, $nicks) = ($event->{event}->{args}[2], $event->{event}->{args}[3]);
foreach my $nick (split ' ', $nicks) {
my $stripped_nick = $nick;
$stripped_nick =~ s/^[@+%]//g; # remove OP/Voice/etc indicator from nick
$self->add_nick($channel, $stripped_nick);
my ($account_id, $hostmask) = $self->{pbot}->{messagehistory}->{database}->find_message_account_by_nick($stripped_nick);
if (defined $hostmask) {
my ($user, $host) = $hostmask =~ m/[^!]+!([^@]+)@(.*)/;
$self->set_meta($channel, $stripped_nick, 'hostmask', $hostmask);
$self->set_meta($channel, $stripped_nick, 'user', $user);
$self->set_meta($channel, $stripped_nick, 'host', $host);
}
if ($nick =~ m/\@/) { $self->set_meta($channel, $stripped_nick, '+o', 1); }
if ($nick =~ m/\+/) { $self->set_meta($channel, $stripped_nick, '+v', 1); }
if ($nick =~ m/\%/) { $self->set_meta($channel, $stripped_nick, '+h', 1); }
}
return 0;
}
sub on_activity {
my ($self, $event_type, $event) = @_;
my ($nick, $user, $host, $channel) = ($event->{event}->nick, $event->{event}->user, $event->{event}->host, $event->{event}->{to}[0]);
$self->update_timestamp($channel, $nick);
return 0;
}
sub on_join {
my ($self, $event_type, $event) = @_;
my ($nick, $user, $host, $channel) = ($event->{event}->nick, $event->{event}->user, $event->{event}->host, $event->{event}->to);
$self->add_nick($channel, $nick);
$self->set_meta($channel, $nick, 'hostmask', "$nick!$user\@$host");
$self->set_meta($channel, $nick, 'user', $user);
$self->set_meta($channel, $nick, 'host', $host);
$self->set_meta($channel, $nick, 'join', gettimeofday);
return 0;
}
sub on_part {
my ($self, $event_type, $event) = @_;
my ($nick, $user, $host, $channel) = ($event->{event}->nick, $event->{event}->user, $event->{event}->host, $event->{event}->to);
$self->remove_nick($channel, $nick);
return 0;
}
sub on_quit {
my ($self, $event_type, $event) = @_;
my ($nick, $user, $host) = ($event->{event}->nick, $event->{event}->user, $event->{event}->host);
foreach my $channel (keys %{$self->{nicklist}}) {
if ($self->is_present($channel, $nick)) {
$self->remove_nick($channel, $nick);
}
}
return 0;
}
sub on_kick {
my ($self, $event_type, $event) = @_;
my ($nick, $channel) = ($event->{event}->to, $event->{event}->{args}[0]);
$self->remove_nick($channel, $nick);
return 0;
}
sub on_nickchange {
my ($self, $event_type, $event) = @_;
my ($nick, $user, $host, $newnick) = ($event->{event}->nick, $event->{event}->user, $event->{event}->host, $event->{event}->args);
foreach my $channel (keys %{$self->{nicklist}}) {
if ($self->is_present($channel, $nick)) {
my $meta = delete $self->{nicklist}->{$channel}->{lc $nick};
$meta->{nick} = $newnick;
$meta->{timestamp} = gettimeofday;
$self->{nicklist}->{$channel}->{lc $newnick} = $meta;
}
}
return 0;
}
sub on_self_join {
my ($self, $event_type, $event) = @_;
$self->remove_channel($event->{channel}); # clear nicklist to remove any stale nicks before repopulating with namreplies
return 0;
}
sub on_self_part {
my ($self, $event_type, $event) = @_;
$self->remove_channel($event->{channel});
return 0;
}
1;