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