mirror of
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125 lines
3.9 KiB
Perl
125 lines
3.9 KiB
Perl
# File: Modules.pm
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#
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# Purpose: Modules are command-line programs and scripts that can be loaded
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# via PBot factoids. Command arguments are passed as command-line arguments.
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# The standard output from the script is returned as the bot command result.
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# The standard error output is stored in a file named <module>-stderr in the
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# modules/ directory.
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# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
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# SPDX-License-Identifier: MIT
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package PBot::Core::Modules;
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use parent 'PBot::Core::Class';
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use PBot::Imports;
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use IPC::Run qw/run timeout/;
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use Encode;
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sub initialize {
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# nothing to do here
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}
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sub execute_module {
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my ($self, $context) = @_;
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if ($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("execute_module\n");
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$self->{pbot}->{logger}->log(Dumper $context);
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}
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$self->{pbot}->{process_manager}->execute_process($context, sub { $self->launch_module(@_) });
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}
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sub launch_module {
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my ($self, $context) = @_;
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$context->{arguments} //= '';
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my @factoids = $self->{pbot}->{factoids}->{data}->find($context->{from}, $context->{keyword}, exact_channel => 2, exact_trigger => 2);
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if (not @factoids or not $factoids[0]) {
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$context->{checkflood} = 1;
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$self->{pbot}->{interpreter}->handle_result($context, "/msg $context->{nick} Failed to find module for '$context->{keyword}' in channel $context->{from}\n");
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return;
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}
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my ($channel, $trigger) = ($factoids[0]->[0], $factoids[0]->[1]);
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$context->{channel} = $channel;
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$context->{keyword} = $trigger;
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$context->{trigger} = $trigger;
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my $module = $self->{pbot}->{factoids}->{data}->{storage}->get_data($channel, $trigger, 'action');
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$self->{pbot}->{logger}->log(
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'(' . (defined $context->{from} ? $context->{from} : "(undef)") . '): '
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. "$context->{hostmask}: Executing module [$context->{command}] $module $context->{arguments}\n"
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);
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$context->{arguments} = $self->{pbot}->{factoids}->{variables}->expand_factoid_vars($context, $context->{arguments});
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my $module_dir = $self->{pbot}->{registry}->get_value('general', 'module_dir');
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if (not chdir $module_dir) {
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$self->{pbot}->{logger}->log("Could not chdir to '$module_dir': $!\n");
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Carp::croak("Could not chdir to '$module_dir': $!");
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}
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if ($self->{pbot}->{factoids}->{data}->{storage}->exists($channel, $trigger, 'workdir')) {
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chdir $self->{pbot}->{factoids}->{data}->{storage}->get_data($channel, $trigger, 'workdir');
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}
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# FIXME -- add check to ensure $module exists
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my ($exitval, $stdout, $stderr) = eval {
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my $args = $context->{arguments};
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if (not $context->{args_utf8}) {
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$args = encode('UTF-8', $args);
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}
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my @cmdline = ("./$module", $self->{pbot}->{interpreter}->split_line($args));
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my $timeout = $self->{pbot}->{registry}->get_value('general', 'module_timeout') // 30;
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my ($stdin, $stdout, $stderr);
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run \@cmdline, \$stdin, \$stdout, \$stderr, timeout($timeout);
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my $exitval = $? >> 8;
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utf8::decode $stdout;
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utf8::decode $stderr;
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return ($exitval, $stdout, $stderr);
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};
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if ($@) {
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my $error = $@;
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if ($error =~ m/timeout on timer/) {
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($exitval, $stdout, $stderr) = (-1, "$context->{trigger}: timed-out", '');
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} else {
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($exitval, $stdout, $stderr) = (-1, '', $error);
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$self->{pbot}->{logger}->log("$context->{trigger}: error executing module: $error\n");
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}
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}
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if (length $stderr) {
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if (open(my $fh, '>>', "$module-stderr")) {
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print $fh $stderr;
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close $fh;
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} else {
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$self->{pbot}->{logger}->log("Failed to open $module-stderr: $!\n");
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}
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}
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$context->{result} = $stdout;
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chomp $context->{result};
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}
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1;
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