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pbot/PBot/Commands.pm
Pragmatic Software 976bfcb5e7 Refactor commands to begin with cmd_ and take a $context object
Move all command subroutines closer to top of source file
Do not send WHO to non-chanop channels
Minor misc bugfixes and improvements
2020-05-04 13:21:35 -07:00

260 lines
11 KiB
Perl

# File: Commands.pm
#
# Author: pragma_
#
# Purpose: Registers commands. Invokes commands with user capability
# validation.
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
package PBot::Commands;
use parent 'PBot::Class', 'PBot::Registerable';
use warnings; use strict;
use feature 'unicode_strings';
use Time::Duration qw/duration/;
sub initialize {
my ($self, %conf) = @_;
$self->PBot::Registerable::initialize(%conf);
$self->{metadata} = PBot::HashObject->new(pbot => $self->{pbot}, name => 'Commands', filename => $conf{filename});
$self->{metadata}->load;
$self->register(sub { $self->cmd_set(@_) }, "cmdset", 1);
$self->register(sub { $self->cmd_unset(@_) }, "cmdunset", 1);
$self->register(sub { $self->cmd_help(@_) }, "help", 0);
$self->register(sub { $self->cmd_uptime(@_) }, "uptime", 0);
$self->register(sub { $self->cmd_in_channel(@_) }, "in", 0);
$self->{pbot}->{capabilities}->add('admin', 'can-in', 1);
}
sub cmd_set {
my ($self, $context) = @_;
my ($command, $key, $value) = $self->{pbot}->{interpreter}->split_args($context->{arglist}, 3);
return "Usage: cmdset <command> [key [value]]" if not defined $command;
return $self->{metadata}->set($command, $key, $value);
}
sub cmd_unset {
my ($self, $context) = @_;
my ($command, $key) = $self->{pbot}->{interpreter}->split_args($context->{arglist}, 2);
return "Usage: cmdunset <command> <key>" if not defined $command or not defined $key;
return $self->{metadata}->unset($command, $key);
}
sub cmd_help {
my ($self, $context) = @_;
if (not length $context->{arguments}) {
return "For general help, see <https://github.com/pragma-/pbot/tree/master/doc>. For help about a specific command or factoid, use `help <keyword> [channel]`.";
}
my $keyword = lc $self->{pbot}->{interpreter}->shift_arg($context->{arglist});
# check built-in commands first
if ($self->exists($keyword)) {
if ($self->{metadata}->exists($keyword)) {
my $name = $self->{metadata}->get_key_name($keyword);
my $requires_cap = $self->{metadata}->get_data($keyword, 'requires_cap');
my $help = $self->{metadata}->get_data($keyword, 'help');
my $result = "/say $name: ";
$result .= "[Requires can-$keyword] " if $requires_cap;
if (not defined $help or not length $help) { $result .= "I have no help text for this command yet. To add help text, use the command `cmdset $keyword help <text>`."; }
else { $result .= $help; }
return $result;
}
return "$keyword is a built-in command, but I have no help for it yet.";
}
# then factoids
my $channel_arg = $self->{pbot}->{interpreter}->shift_arg($context->{arglist});
$channel_arg = $context->{from} if not defined $channel_arg or not length $channel_arg;
$channel_arg = '.*' if $channel_arg !~ m/^#/;
my @factoids = $self->{pbot}->{factoids}->find_factoid($channel_arg, $keyword, exact_trigger => 1);
if (not @factoids or not $factoids[0]) { return "I don't know anything about $keyword."; }
my ($channel, $trigger);
if (@factoids > 1) {
if (not grep { $_->[0] eq $channel_arg } @factoids) {
return
"/say $keyword found in multiple channels: "
. (join ', ', sort map { $_->[0] eq '.*' ? 'global' : $_->[0] } @factoids)
. "; use `help $keyword <channel>` to disambiguate.";
} else {
foreach my $factoid (@factoids) {
if ($factoid->[0] eq $channel_arg) {
($channel, $trigger) = ($factoid->[0], $factoid->[1]);
last;
}
}
}
} else {
($channel, $trigger) = ($factoids[0]->[0], $factoids[0]->[1]);
}
my $channel_name = $self->{pbot}->{factoids}->{factoids}->get_key_name($channel);
my $trigger_name = $self->{pbot}->{factoids}->{factoids}->get_key_name($channel, $trigger);
$channel_name = 'global channel' if $channel_name eq '.*';
$trigger_name = "\"$trigger_name\"" if $trigger_name =~ / /;
my $result = "/say ";
$result .= "[$channel_name] " if $channel ne $context->{from} and $channel ne '.*';
$result .= "$trigger_name: ";
my $help = $self->{pbot}->{factoids}->{factoids}->get_data($channel, $trigger, 'help');
if (not defined $help or not length $help) { return "/say $trigger_name is a factoid for $channel_name, but I have no help text for it yet. To add help text, use the command `factset $trigger_name help <text>`."; }
$result .= $help;
return $result;
}
sub cmd_uptime {
my ($self, $context) = @_;
return localtime($self->{pbot}->{startup_timestamp}) . " [" . duration(time - $self->{pbot}->{startup_timestamp}) . "]";
}
sub cmd_in_channel {
my ($self, $context) = @_;
my $usage = "Usage: in <channel> <command>";
return $usage if not length $context->{arguments};
my ($channel, $command) = $self->{pbot}->{interpreter}->split_args($context->{arglist}, 2, 0, 1);
return $usage if not defined $channel or not defined $command;
if (not $self->{pbot}->{nicklist}->is_present($channel, $context->{nick})) {
return "You must be present in $channel to do this.";
}
$context->{from} = $channel;
$context->{command} = $command;
return $self->{pbot}->{interpreter}->interpret($context);
}
sub register {
my ($self, $subref, $name, $requires_cap) = @_;
Carp::croak("Missing parameters to Commands::register") if not defined $subref or not defined $name;
my $ref = $self->PBot::Registerable::register($subref);
$ref->{name} = lc $name;
$ref->{requires_cap} = $requires_cap // 0;
if (not $self->{metadata}->exists($name)) { $self->{metadata}->add($name, {requires_cap => $requires_cap, help => ''}, 1); }
else {
if (not defined $self->get_meta($name, 'requires_cap')) { $self->{metadata}->set($name, 'requires_cap', $requires_cap, 1); }
}
# add can-cmd capability
$self->{pbot}->{capabilities}->add("can-$name", undef, 1) if $requires_cap;
return $ref;
}
sub unregister {
my ($self, $name) = @_;
Carp::croak("Missing name parameter to Commands::unregister") if not defined $name;
$name = lc $name;
@{$self->{handlers}} = grep { $_->{name} ne $name } @{$self->{handlers}};
}
sub exists {
my ($self, $keyword) = @_;
$keyword = lc $keyword;
foreach my $ref (@{$self->{handlers}}) { return 1 if $ref->{name} eq $keyword; }
return 0;
}
sub set_meta {
my ($self, $command, $key, $value, $save) = @_;
return undef if not $self->{metadata}->exists($command);
$self->{metadata}->set($command, $key, $value, !$save);
return 1;
}
sub get_meta {
my ($self, $command, $key) = @_;
return $self->{metadata}->get_data($command, $key);
}
sub interpreter {
my ($self, $context) = @_;
my $result;
if ($self->{pbot}->{registry}->get_value('general', 'debugcontext')) {
use Data::Dumper;
$Data::Dumper::Sortkeys = 1;
$self->{pbot}->{logger}->log("Commands::interpreter\n");
$self->{pbot}->{logger}->log(Dumper $context);
}
my $keyword = lc $context->{keyword};
my $from = $context->{from};
my ($cmd_channel) = $context->{arguments} =~ m/\B(#[^ ]+)/; # assume command is invoked in regards to first channel-like argument
$cmd_channel = $from if not defined $cmd_channel; # otherwise command is invoked in regards to the channel the user is in
my $user = $self->{pbot}->{users}->find_user($cmd_channel, "$context->{nick}!$context->{user}\@$context->{host}");
my $cap_override;
if (exists $context->{'cap-override'}) {
$self->{pbot}->{logger}->log("Override cap to $context->{'cap-override'}\n");
$cap_override = $context->{'cap-override'};
}
foreach my $ref (@{$self->{handlers}}) {
if ($ref->{name} eq $keyword) {
my $requires_cap = $self->get_meta($keyword, 'requires_cap') // $ref->{requires_cap};
if ($requires_cap) {
if (defined $cap_override) {
if (not $self->{pbot}->{capabilities}->has($cap_override, "can-$keyword")) {
return "/msg $context->{nick} The $keyword command requires the can-$keyword capability, which cap-override $cap_override does not have.";
}
} else {
if (not defined $user) {
my ($found_chan, $found_mask) = $self->{pbot}->{users}->find_user_account($cmd_channel, "$context->{nick}!$context->{user}\@$context->{host}", 1);
if (not defined $found_chan) { return "/msg $context->{nick} You must have a user account to use $keyword. You may use the `my` command to create a personal user account. See `help my`."; }
else { return "/msg $context->{nick} You must have a user account in $cmd_channel to use $keyword. (You have an account in $found_chan.)"; }
} elsif (not $user->{loggedin}) {
return "/msg $context->{nick} You must be logged into your user account to use $keyword.";
}
if (not $self->{pbot}->{capabilities}->userhas($user, "can-$keyword")) {
return "/msg $context->{nick} The $keyword command requires the can-$keyword capability, which your user account does not have.";
}
}
}
$context->{action} = $context->{arguments};
$context->{arguments} = $self->{pbot}->{factoids}->expand_factoid_vars($context);
$context->{arguments} = $self->{pbot}->{factoids}->expand_special_vars($context->{from}, $context->{nick}, $context->{keyword}, $context->{arguments});
delete $context->{action};
$context->{no_nickoverride} = 1;
if ($self->get_meta($keyword, 'background-process')) {
my $timeout = $self->get_meta($keyword, 'process-timeout') // $self->{pbot}->{registry}->get_value('processmanager', 'default_timeout');
$self->{pbot}->{process_manager}->execute_process(
$context,
sub { $context->{result} = $ref->{subref}->($context) },
$timeout
);
return "";
} else {
my $result = $ref->{subref}->($context);
return undef if $context->{referenced} and $result =~ m/(?:usage:|no results)/i;
return $result;
}
}
}
return undef;
}
1;