raspisms/controllers/internals/Webhook.php

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<?php
/*
* This file is part of RaspiSMS.
*
* (c) Pierre-Lin Bonnemaison <plebwebsas@gmail.com>
*
* This source file is subject to the GPL-3.0 license that is bundled
* with this source code in the file LICENSE.
*/
namespace controllers\internals;
class Webhook extends StandardController
{
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const HMAC_ALGO = 'sha256';
protected $bdd;
protected $model;
/**
* Create a new webhook.
*
* @param int $id_user : User id
* @param string $url : Webhook url
* @param string $type : Webhook type
*
* @return mixed bool|int : False if cannot create webhook, id of the new webhook else
*/
public function create(int $id_user, string $url, string $type)
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{
//Must ensure http(s) protocole for protection against ssrf
if (!mb_ereg_match('^http(s?)://', $url))
{
return false;
}
$webhook = [
'id_user' => $id_user,
'url' => $url,
'type' => $type,
];
$result = $this->get_model()->insert($webhook);
if (!$result)
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{
return false;
}
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return $result;
}
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/**
* Update a webhook.
*
* @param int $id_user : User id
* @param int $id : Webhook id
* @param string $url : Webhook url
* @param string $type : Webhook type
*
* @return mixed bool|int : False if cannot create webhook, id of the new webhook else
*/
public function update_for_user(int $id_user, int $id, string $url, string $type)
{
//Must ensure http(s) protocole for protection against ssrf
if (!mb_ereg_match('^http(s?)://', $url))
{
return false;
}
$data = [
'url' => $url,
'type' => $type,
];
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return $this->get_model()->update_for_user($id_user, $id, $data);
}
/**
* Find all webhooks for a user and for a type of webhook.
*
* @param int $id_user : User id
* @param string $type : Webhook type
*
* @return array
*/
public function gets_for_type_and_user(int $id_user, string $type)
{
return $this->get_model()->gets_for_type_and_user($id_user, $type);
}
/**
* Trigger a webhook and transmit the signal to webhook daemon if needed.
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*
* @param int $id_user : User to trigger the webhook for
* @param string $type : Type of webhook to trigger
* @param array $sms : The sms [
* int 'id' => SMS id,
* string 'at' => SMS date,
* string 'text' => sms body,
* string 'origin' => sms origin (number or phone id)
* string 'destination' => sms destination (number or phone id)
* ]
*
* @return bool : False if no trigger, true else
*/
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public function trigger(int $id_user, string $type, array $sms)
{
$internal_setting = new Setting($this->bdd);
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$internal_user = new User($this->bdd);
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$settings = $internal_setting->gets_for_user($id_user);
if (!$settings['webhook'] ?? false)
{
return false;
}
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$user = $internal_user->get($id_user);
if (!$user)
{
return false;
}
$webhooks = $this->gets_for_type_and_user($id_user, $type);
foreach ($webhooks as $webhook)
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{
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$timestamp = time();
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$webhook_random_id = $timestamp . '-' . bin2hex(openssl_random_pseudo_bytes(16));
//signature is hexa string representing hmac sha256 of webhook_random_id
$webhook_signature = hash_hmac(self::HMAC_ALGO, $webhook_random_id, $user['api_key']);
$message = [
'url' => $webhook['url'],
'data' => [
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'webhook_timestamp' => $timestamp,
'webhook_type' => $webhook['type'],
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'webhook_random_id' => $webhook_random_id,
'webhook_signature' => $webhook_signature,
'id' => $sms['id'],
'at' => $sms['at'],
'text' => $sms['text'],
'origin' => $sms['origin'],
'destination' => $sms['destination'],
],
];
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$error_code = null;
$queue = msg_get_queue(QUEUE_ID_WEBHOOK);
$success = msg_send($queue, QUEUE_TYPE_WEBHOOK, $message, true, true, $error_code);
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return (bool) $success;
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}
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}
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/**
* Get the model for the Controller.
*/
protected function get_model(): \descartes\Model
{
$this->model = $this->model ?? new \models\Webhook($this->bdd);
return $this->model;
}
}