misc_pterodactyl-panel/app/Services/Eggs/EggConfigurationService.php

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<?php
/**
* Pterodactyl - Panel
* Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
*
* This software is licensed under the terms of the MIT license.
* https://opensource.org/licenses/MIT
*/
namespace Pterodactyl\Services\Eggs;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Pterodactyl\Models\Egg;
use Pterodactyl\Models\Server;
use Pterodactyl\Contracts\Repository\EggRepositoryInterface;
use Pterodactyl\Services\Servers\ServerConfigurationStructureService;
class EggConfigurationService
{
/**
* @var \Pterodactyl\Contracts\Repository\EggRepositoryInterface
*/
private $repository;
/**
* @var \Pterodactyl\Services\Servers\ServerConfigurationStructureService
*/
private $configurationStructureService;
/**
* EggConfigurationService constructor.
*
* @param \Pterodactyl\Contracts\Repository\EggRepositoryInterface $repository
* @param \Pterodactyl\Services\Servers\ServerConfigurationStructureService $configurationStructureService
*/
public function __construct(
EggRepositoryInterface $repository,
ServerConfigurationStructureService $configurationStructureService
) {
$this->repository = $repository;
$this->configurationStructureService = $configurationStructureService;
}
/**
* Return an Egg file to be used by the Daemon.
*
* @param \Pterodactyl\Models\Server $server
* @return array
*
* @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
*/
public function handle(Server $server): array
{
$configs = $this->replacePlaceholders(
$server, json_decode($server->egg->inherit_config_files)
);
return [
'startup' => json_decode($server->egg->inherit_config_startup),
'stop' => $this->convertStopToNewFormat($server->egg->inherit_config_stop),
'configs' => $configs,
];
}
/**
* Converts a legacy stop string into a new generation stop option for a server.
*
* For most eggs, this ends up just being a command sent to the server console, but
* if the stop command is something starting with a caret (^), it will be converted
* into the associated kill signal for the instance.
*
* @param string $stop
* @return array
*/
protected function convertStopToNewFormat(string $stop): array
{
if (! Str::startsWith($stop, '^')) {
return [
'type' => 'command',
'value' => $stop,
];
}
$signal = substr($stop, 1);
if (strtoupper($signal) === 'C') {
return [
'type' => 'stop',
'value' => null,
];
}
return [
'type' => 'signal',
'value' => strtoupper($signal),
];
}
/**
* @param \Pterodactyl\Models\Server $server
* @param object $configs
* @return array
*
* @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
*/
protected function replacePlaceholders(Server $server, object $configs)
{
// Get the legacy configuration structure for the server so that we
// can property map the egg placeholders to values.
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$structure = $this->configurationStructureService->handle($server, true);
foreach ($configs as $file => $data) {
foreach ($data->find ?? [] as &$value) {
preg_match('/^{{(?<key>.*)}}$/', $value, $matches);
if (! $key = $matches['key'] ?? null) {
continue;
}
// Matched something in {{server.X}} format, now replace that with the actual
// value from the server properties.
//
// The Daemon supports server.X, env.X, and config.X placeholders.
if (! Str::startsWith($key, ['server.', 'env.', 'config.'])) {
continue;
}
// We don't want to do anything with config keys since the Daemon will need to handle
// that. For example, the Spigot egg uses "config.docker.interface" to identify the Docker
// interface to proxy through, but the Panel would be unaware of that.
if (Str::startsWith($key, 'config.')) {
$value = "{{{$key}}}";
continue;
}
// The legacy Daemon would set SERVER_MEMORY, SERVER_IP, and SERVER_PORT with their
// respective values on the Daemon side. Ensure that anything referencing those properly
// replaces them with the matching config value.
switch ($key) {
case 'server.build.env.SERVER_MEMORY':
case 'env.SERVER_MEMORY':
$key = 'server.build.memory';
break;
case 'server.build.env.SERVER_IP':
case 'env.SERVER_IP':
$key = 'server.build.default.ip';
break;
case 'server.build.env.SERVER_PORT':
case 'env.SERVER_PORT':
$key = 'server.build.default.port';
break;
}
// Replace anything starting with "server." with the value out of the server configuration
// array that used to be created for the old daemon.
if (Str::startsWith($key, 'server.')) {
$value = Arr::get(
$structure, preg_replace('/^server\./', '', $key), ''
);
continue;
}
// Finally, replace anything starting with env. with the expected environment
// variable from the server configuration.
$value = Arr::get(
$structure, preg_replace('/^env\./', 'build.env.', $key), ''
);
}
}
$response = [];
// Normalize the output of the configuration for the new Wings Daemon to more
// easily ingest, as well as make things more flexible down the road.
foreach ($configs as $file => $data) {
$append = ['file' => $file, 'replace' => []];
// I like to think I understand PHP pretty well, but if you don't pass $value
// by reference here, you'll end up with a resursive array loop if the config
// file has two replacements that reference the same item in the configuration
// array for the server.
foreach ($data as $key => &$value) {
if ($key !== 'find') {
$append[$key] = $value;
continue;
}
foreach ($value as $find => $replace) {
$append['replace'][] = ['match' => $find, 'value' => $replace];
}
}
$response[] = $append;
}
return $response;
}
}