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Code Issues Releases Wiki Activity

Cleanup FQDN validation logic, fallback to old hostname check (#4409)

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Co-authored-by: DaneEveritt <dane@daneeveritt.com>
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Matthew Penner 2022-10-09 16:19:16 -06:00 committed by GitHub
parent c748fa9842
commit 95e15d2c8a
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3 changed files with 87 additions and 49 deletions
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20
app/Console/Commands/Node/MakeNodeCommand.php
View File

@ -58,29 +58,13 @@ class MakeNodeCommand extends Command
$data['name'] = $this->option('name') ?? $this->ask('Enter a short identifier used to distinguish this node from others');
$data['description'] = $this->option('description') ?? $this->ask('Enter a description to identify the node');
$data['location_id'] = $this->option('locationId') ?? $this->ask('Enter a valid location id');
$data['fqdn'] = $this->option('fqdn') ?? $this->ask('Enter a domain name (e.g node.example.com) to be used for connecting to the daemon. An IP address may only be used if you are not using SSL for this node');
// Note, this function will also resolve CNAMEs for us automatically,
// there is no need to manually resolve them here.
//
// Using @ as workaround to fix https://bugs.php.net/bug.php?id=73149
$records = @dns_get_record($data['fqdn'], DNS_A + DNS_AAAA);
if (empty($records)) {
$this->error('The FQDN or IP address provided does not resolve to a valid IP address.');
return;
}
$data['public'] = $this->option('public') ?? $this->confirm('Should this node be public? As a note, setting a node to private you will be denying the ability to auto-deploy to this node.', true);
$data['scheme'] = $this->option('scheme') ?? $this->anticipate(
'Please either enter https for SSL or http for a non-ssl connection',
['https', 'http'],
'https'
);
if (filter_var($data['fqdn'], FILTER_VALIDATE_IP) && $data['scheme'] === 'https') {
$this->error('A fully qualified domain name that resolves to a public IP address is required in order to use SSL for this node.');
return;
}
$data['fqdn'] = $this->option('fqdn') ?? $this->ask('Enter a domain name (e.g node.example.com) to be used for connecting to the daemon. An IP address may only be used if you are not using SSL for this node');
$data['public'] = $this->option('public') ?? $this->confirm('Should this node be public? As a note, setting a node to private you will be denying the ability to auto-deploy to this node.', true);
$data['behind_proxy'] = $this->option('proxy') ?? $this->confirm('Is your FQDN behind a proxy?');
$data['maintenance_mode'] = $this->option('maintenance') ?? $this->confirm('Should maintenance mode be enabled?');
$data['memory'] = $this->option('maxMemory') ?? $this->ask('Enter the maximum amount of memory');

35
app/Http/Requests/Admin/Node/NodeFormRequest.php
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@ -1,14 +1,8 @@
<?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\Http\Requests\Admin\Node;
use Pterodactyl\Rules\Fqdn;
use Pterodactyl\Models\Node;
use Pterodactyl\Http\Requests\Admin\AdminFormRequest;
@ -23,30 +17,9 @@ class NodeFormRequest extends AdminFormRequest
return Node::getRulesForUpdate($this->route()->parameter('node'));
}
return Node::getRules();
}
$data = Node::getRules();
$data['fqdn'][] = Fqdn::make('scheme');
/**
* Run validation after the rules above have been applied.
*
* @param \Illuminate\Validation\Validator $validator
*/
public function withValidator($validator)
{
$validator->after(function ($validator) {
// Note, this function will also resolve CNAMEs for us automatically,
// there is no need to manually resolve them here.
//
// Using @ as workaround to fix https://bugs.php.net/bug.php?id=73149
$records = @dns_get_record($this->input('fqdn'), DNS_A + DNS_AAAA);
if (empty($records)) {
$validator->errors()->add('fqdn', trans('admin/node.validation.fqdn_not_resolvable'));
}
// Check that if using HTTPS the FQDN is not an IP address.
if (filter_var($this->input('fqdn'), FILTER_VALIDATE_IP) && $this->input('scheme') === 'https') {
$validator->errors()->add('fqdn', trans('admin/node.validation.fqdn_required_for_ssl'));
}
});
return $data;
}
}

81
app/Rules/Fqdn.php Normal file
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@ -0,0 +1,81 @@
<?php
namespace Pterodactyl\Rules;
use Illuminate\Support\Arr;
use Illuminate\Contracts\Validation\Rule;
use Illuminate\Contracts\Validation\DataAwareRule;
class Fqdn implements Rule, DataAwareRule
{
protected array $data = [];
protected string $message = '';
protected ?string $schemeField = null;
/**
* @param array $data
*/
public function setData($data): self
{
$this->data = $data;
return $this;
}
/**
* Validates that the value provided resolves to an IP address. If a scheme is
* specified when this rule is created additional checks will be applied.
*
* @param string $attribute
* @param mixed $value
* @return bool
*/
public function passes($attribute, $value)
{
if (filter_var($value, FILTER_VALIDATE_IP)) {
// Check if the scheme is set to HTTPS.
//
// Unless someone owns their IP blocks and decides to pay who knows how much for a
// custom SSL cert, IPs will not be able to use HTTPS. This should prevent most
// home users from making this mistake and wondering why their node is not working.
if ($this->schemeField && Arr::get($this->data, $this->schemeField) === 'https') {
$this->message = 'The :attribute must not be an IP address when HTTPS is enabled.';
return false;
}
return true;
}
// Lookup A and AAAA DNS records for the FQDN. Note, this function will also resolve CNAMEs
// for us automatically, there is no need to manually resolve them here.
//
// The error suppression is intentional, see https://bugs.php.net/bug.php?id=73149
$records = @dns_get_record($value, DNS_A + DNS_AAAA);
// If no records were returned fall back to trying to resolve the value using the hosts DNS
// resolution. This will not work for IPv6 which is why we prefer to use `dns_get_record`
// first.
if (!empty($records) || filter_var(gethostbyname($value), FILTER_VALIDATE_IP)) {
return true;
}
$this->message = 'The :attribute could not be resolved to a valid IP address.';
return false;
}
public function message(): string
{
return $this->message;
}
/**
* Returns a new instance of the rule with a defined scheme set.
*/
public static function make(string $schemeField = null): self
{
return tap(new static(), function ($fqdn) use ($schemeField) {
$fqdn->schemeField = $schemeField;
});
}
}