mirror of
https://github.com/invoiceninja/invoiceninja.git
synced 2025-10-31 18:07:35 -04:00
324 lines
10 KiB
PHP
324 lines
10 KiB
PHP
<?php
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namespace App\Http\Controllers;
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use Auth;
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use DB;
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use Utils;
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use Cache;
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use Input;
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use Exception;
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use App\Libraries\Skype\SkypeResponse;
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use App\Libraries\CurlUtils;
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use App\Models\User;
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use App\Models\SecurityCode;
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use App\Ninja\Intents\BaseIntent;
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use App\Ninja\Mailers\UserMailer;
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class BotController extends Controller
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{
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protected $userMailer;
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public function __construct(UserMailer $userMailer)
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{
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$this->userMailer = $userMailer;
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}
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public function handleMessage($platform)
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{
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$input = Input::all();
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$botUserId = $input['from']['id'];
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if ( ! $token = $this->authenticate($input)) {
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return SkypeResponse::message(trans('texts.not_authorized'));
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}
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try {
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if ($input['type'] === 'contactRelationUpdate') {
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// brand new user, ask for their email
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if ($input['action'] === 'add') {
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$response = SkypeResponse::message(trans('texts.bot_get_email'));
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$state = BOT_STATE_GET_EMAIL;
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} elseif ($input['action'] === 'remove') {
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$this->removeBot($botUserId);
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$this->saveState($token, false);
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return RESULT_SUCCESS;
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}
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} else {
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$state = $this->loadState($token);
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$text = strip_tags($input['text']);
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// user gaves us their email
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if ($state === BOT_STATE_GET_EMAIL) {
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if ($this->validateEmail($text, $botUserId)) {
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$response = SkypeResponse::message(trans('texts.bot_get_code'));
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$state = BOT_STATE_GET_CODE;
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} else {
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$response = SkypeResponse::message(trans('texts.email_not_found', ['email' => $text]));
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}
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// user sent the scurity code
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} elseif ($state === BOT_STATE_GET_CODE) {
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if ($this->validateCode($text, $botUserId)) {
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$response = SkypeResponse::message(trans('texts.bot_welcome') . trans('texts.bot_help_message'));
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$state = BOT_STATE_READY;
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} else {
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$response = SkypeResponse::message(trans('texts.invalid_code'));
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}
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// regular chat message
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} else {
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if ($text === 'help') {
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$response = SkypeResponse::message(trans('texts.bot_help_message'));
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} elseif ($text == 'status') {
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$response = SkypeResponse::message(trans('texts.intent_not_supported'));
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} else {
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if ( ! $user = User::whereBotUserId($botUserId)->with('account')->first()) {
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return SkypeResponse::message(trans('texts.not_authorized'));
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}
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Auth::onceUsingId($user->id);
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$user->account->loadLocalizationSettings();
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$data = $this->parseMessage($text);
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$intent = BaseIntent::createIntent($state, $data);
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$response = $intent->process();
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$state = $intent->getState();
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}
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}
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}
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$this->saveState($token, $state);
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} catch (Exception $exception) {
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$response = SkypeResponse::message($exception->getMessage());
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}
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$this->sendResponse($token, $botUserId, $response);
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return RESULT_SUCCESS;
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}
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private function authenticate($input)
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{
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$token = isset($_SERVER['HTTP_AUTHORIZATION']) ? $_SERVER['HTTP_AUTHORIZATION'] : false;
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if (Utils::isNinjaDev()) {
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// skip validation for testing
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} elseif ( ! $this->validateToken($token)) {
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return false;
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}
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if ($token = Cache::get('msbot_token')) {
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return $token;
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}
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$clientId = env('MSBOT_CLIENT_ID');
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$clientSecret = env('MSBOT_CLIENT_SECRET');
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$scope = 'https://graph.microsoft.com/.default';
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$data = sprintf('grant_type=client_credentials&client_id=%s&client_secret=%s&scope=%s', $clientId, $clientSecret, $scope);
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$response = CurlUtils::post(MSBOT_LOGIN_URL, $data);
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$response = json_decode($response);
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$expires = ($response->expires_in / 60) - 5;
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Cache::put('msbot_token', $response->access_token, $expires);
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return $response->access_token;
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}
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private function loadState($token)
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{
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$url = sprintf('%s/botstate/skype/conversations/%s', MSBOT_STATE_URL, '29:1C-OsU7OWBEDOYJhQUsDkYHmycOwOq9QOg5FVTwRX9ts');
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$headers = [
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'Authorization: Bearer ' . $token
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];
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$response = CurlUtils::get($url, $headers);
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$data = json_decode($response);
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return json_decode($data->data);
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}
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private function parseMessage($message)
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{
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$appId = env('MSBOT_LUIS_APP_ID');
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$subKey = env('MSBOT_LUIS_SUBSCRIPTION_KEY');
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$message = rawurlencode($message);
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$url = sprintf('%s?id=%s&subscription-key=%s&q=%s', MSBOT_LUIS_URL, $appId, $subKey, $message);
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$data = file_get_contents($url);
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$data = json_decode($data);
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return $data;
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}
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private function saveState($token, $data)
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{
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$url = sprintf('%s/botstate/skype/conversations/%s', MSBOT_STATE_URL, '29:1C-OsU7OWBEDOYJhQUsDkYHmycOwOq9QOg5FVTwRX9ts');
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$headers = [
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'Authorization: Bearer ' . $token,
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'Content-Type: application/json',
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];
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//echo "STATE<pre>" . htmlentities(json_encode($data), JSON_PRETTY_PRINT) . "</pre>";
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$data = '{ eTag: "*", data: "' . addslashes(json_encode($data)) . '" }';
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CurlUtils::post($url, $data, $headers);
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}
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private function sendResponse($token, $to, $message)
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{
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$url = sprintf('%s/conversations/%s/activities/', SKYPE_API_URL, $to);
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$headers = [
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'Authorization: Bearer ' . $token,
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];
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//echo "<pre>" . htmlentities(json_encode(json_decode($message), JSON_PRETTY_PRINT)) . "</pre>";
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$response = CurlUtils::post($url, $message, $headers);
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//var_dump($response);
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}
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private function validateEmail($email, $botUserId)
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{
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if ( ! $email || ! $botUserId) {
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return false;
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}
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// delete any expired codes
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SecurityCode::whereBotUserId($botUserId)
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->where('created_at', '<', DB::raw('now() - INTERVAL 10 MINUTE'))
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->delete();
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if (SecurityCode::whereBotUserId($botUserId)->first()) {
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return false;
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}
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$user = User::whereEmail($email)
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->whereNull('bot_user_id')
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->first();
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if ( ! $user) {
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return false;
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}
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$code = new SecurityCode();
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$code->user_id = $user->id;
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$code->account_id = $user->account_id;
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$code->code = mt_rand(100000, 999999);
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$code->bot_user_id = $botUserId;
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$code->save();
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$this->userMailer->sendSecurityCode($user, $code->code);
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return $code->code;
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}
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private function validateCode($input, $botUserId)
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{
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if ( ! $input || ! $botUserId) {
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return false;
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}
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$code = SecurityCode::whereBotUserId($botUserId)
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->where('created_at', '>', DB::raw('now() - INTERVAL 10 MINUTE'))
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->where('attempts', '<', 5)
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->first();
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if ( ! $code) {
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return false;
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}
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if ( ! hash_equals($code->code, $input)) {
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$code->attempts += 1;
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$code->save();
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return false;
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}
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$user = User::find($code->user_id);
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$user->bot_user_id = $code->bot_user_id;
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$user->save();
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return true;
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}
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private function removeBot($botUserId)
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{
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$user = User::whereBotUserId($botUserId)->first();
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$user->bot_user_id = null;
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$user->save();
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}
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private function validateToken($token)
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{
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if ( ! $token) {
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return false;
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}
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$token = explode(' ', $token)[1];
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// https://blogs.msdn.microsoft.com/tsmatsuz/2016/07/12/developing-skype-bot/
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// 0:Invalid, 1:Valid
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$token_valid = 0;
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// 1 separate token by dot (.)
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$token_arr = explode('.', $token);
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$headers_enc = $token_arr[0];
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$claims_enc = $token_arr[1];
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$sig_enc = $token_arr[2];
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// 2 base 64 url decoding
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$headers_arr = json_decode($this->base64_url_decode($headers_enc), TRUE);
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$claims_arr = json_decode($this->base64_url_decode($claims_enc), TRUE);
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$sig = $this->base64_url_decode($sig_enc);
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// 3 get key list
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$keylist = file_get_contents('https://api.aps.skype.com/v1/keys');
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$keylist_arr = json_decode($keylist, TRUE);
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foreach($keylist_arr['keys'] as $key => $value) {
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// 4 select one key (which matches)
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if($value['kid'] == $headers_arr['kid']) {
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// 5 get public key from key info
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$cert_txt = '-----BEGIN CERTIFICATE-----' . "\n" . chunk_split($value['x5c'][0], 64) . '-----END CERTIFICATE-----';
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$cert_obj = openssl_x509_read($cert_txt);
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$pkey_obj = openssl_pkey_get_public($cert_obj);
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$pkey_arr = openssl_pkey_get_details($pkey_obj);
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$pkey_txt = $pkey_arr['key'];
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// 6 verify signature
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$token_valid = openssl_verify($headers_enc . '.' . $claims_enc, $sig, $pkey_txt, OPENSSL_ALGO_SHA256);
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}
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}
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// 7 show result
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return ($token_valid == 1);
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}
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private function base64_url_decode($arg) {
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$res = $arg;
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$res = str_replace('-', '+', $res);
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$res = str_replace('_', '/', $res);
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switch (strlen($res) % 4) {
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case 0:
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break;
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case 2:
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$res .= "==";
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break;
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case 3:
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$res .= "=";
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break;
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default:
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break;
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}
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$res = base64_decode($res);
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return $res;
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}
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}
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