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pbot/lib/PBot/Core/Handlers/SASL.pm
2023-04-13 21:04:12 -07:00

106 lines
3.9 KiB
Perl

# File: SASL.pm
#
# Purpose: Handles IRCv3 SASL events. Currently only PLAIN is supported.
# SPDX-FileCopyrightText: 2021-2023 Pragmatic Software <pragma78@gmail.com>
# SPDX-License-Identifier: MIT
package PBot::Core::Handlers::SASL;
use PBot::Imports;
use parent 'PBot::Core::Class';
use POSIX qw/EXIT_FAILURE/;
use Encode;
use MIME::Base64;
sub initialize($self, %conf) {
$self->{pbot}->{event_dispatcher}->register_handler('irc.authenticate', sub { $self->on_sasl_authenticate (@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.rpl_loggedin', sub { $self->on_rpl_loggedin (@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.rpl_loggedout', sub { $self->on_rpl_loggedout (@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.err_nicklocked', sub { $self->on_err_nicklocked (@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.rpl_saslsuccess', sub { $self->on_rpl_saslsuccess (@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.err_saslfail', sub { $self->on_err_saslfail (@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.err_sasltoolong', sub { $self->on_err_sasltoolong (@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.err_saslaborted', sub { $self->on_err_saslaborted (@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.err_saslalready', sub { $self->on_err_saslalready (@_) });
$self->{pbot}->{event_dispatcher}->register_handler('irc.rpl_saslmechs', sub { $self->on_rpl_saslmechs (@_) });
}
sub on_sasl_authenticate($self, $event_type, $event) {
my $nick = $self->{pbot}->{registry}->get_value('irc', 'identify_nick'); # try identify_nick
$nick //= $self->{pbot}->{registry}->get_value('irc', 'botnick'); # fallback to botnick
my $password = $self->{pbot}->{registry}->get_value('irc', 'identify_password');
if (not defined $password or not length $password) {
$self->{pbot}->{logger}->log("Error: Registry entry irc.identify_password is not set.\n");
$self->{pbot}->exit(EXIT_FAILURE);
}
$password = encode('UTF-8', "$nick\0$nick\0$password");
$password = encode_base64($password, '');
my @chunks = unpack('(A400)*', $password);
foreach my $chunk (@chunks) {
$event->{conn}->sl("AUTHENTICATE $chunk");
}
# must send final AUTHENTICATE + if last chunk was exactly 400 bytes
if (length $chunks[$#chunks] == 400) {
$event->{conn}->sl("AUTHENTICATE +");
}
return 1;
}
sub on_rpl_loggedin($self, $event_type, $event) {
$self->{pbot}->{logger}->log($event->{args}[3] . "\n");
return 1;
}
sub on_rpl_loggedout($self, $event_type, $event) {
$self->{pbot}->{logger}->log($event->{args}[1] . "\n");
return 1;
}
sub on_err_nicklocked($self, $event_type, $event) {
$self->{pbot}->{logger}->log($event->{args}[1] . "\n");
$self->{pbot}->exit(EXIT_FAILURE);
}
sub on_rpl_saslsuccess($self, $event_type, $event) {
$self->{pbot}->{logger}->log($event->{args}[1] . "\n");
$event->{conn}->sl("CAP END");
return 1;
}
sub on_err_saslfail($self, $event_type, $event) {
$self->{pbot}->{logger}->log($event->{args}[1] . "\n");
$self->{pbot}->exit(EXIT_FAILURE);
}
sub on_err_sasltoolong($self, $event_type, $event) {
$self->{pbot}->{logger}->log($event->{args}[1] . "\n");
$self->{pbot}->exit(EXIT_FAILURE);
}
sub on_err_saslaborted($self, $event_type, $event) {
$self->{pbot}->{logger}->log($event->{args}[1] . "\n");
$self->{pbot}->exit(EXIT_FAILURE);
}
sub on_err_saslalready($self, $event_type, $event) {
$self->{pbot}->{logger}->log($event->{args}[1] . "\n");
return 1;
}
sub on_rpl_saslmechs($self, $event_type, $event) {
$self->{pbot}->{logger}->log("SASL mechanism not available.\n");
$self->{pbot}->{logger}->log("Available mechanisms are: $event->{args}[1]\n");
$self->{pbot}->exit(EXIT_FAILURE);
}
1;