마침내 내가 어떻게 이것을 할 수 있는지 연구 한 후, 액세스 토큰을 얻는 방법에 대한 매우 간단한 코드와 액세스하기 위해 필요한 새로 고침 토큰을 가져 오는 방법이 있습니다. 사용자가 오프라인 상태 일 때 난 아직도 어떻게 내가 데이터베이스에서 그 값을 저장할 때 알아야 할 수있는 구글 아이디와 함께이 사용자는 데이터베이스에서 동일한 사용자와 PHP에 새로 고침 토큰을 넣어, 그래서 사용자가 없다는 것을 알 수 있습니까? 다시 인증하고 그는이 작업을 한 번만 수행 할 수 있습니다 (서비스 계정). 따라서이 간단한 코드는 액세스 토큰과 새로 고침 토큰을 저장하기 위해 SESSIONS를 사용합니다. 그것은 스토리지에 대한 데이터베이스를 사용하지 않지만, 당신이 원한다면 내가 어떻게 이런 일을 알아낼 내가 여기뿐만 아니라 코드를 게시 할 수 있습니다. 코드는 다음과 같습니다.
<?php
session_start();
// Set error reporting
error_reporting(E_ALL | E_STRICT);
// Display errors
ini_set("display_errors", 1);
// require pages, you have to change it if your pages are somewhere else!
require_once 'src/Google_Client.php';
require_once "src/contrib/Google_Oauth2Service.php";
require_once "src/contrib/Google_DriveService.php";
/**
* Retrieved stored credentials for the provided user ID.
*
* @param String $userId User's ID.
* @return String Json representation of the OAuth 2.0 credentials.
*/
function getStoredCredentials($userId) {
if (!empty($_SESSION['userid'])) {
return $_SESSION['userid'];
}
}
/**
* Store OAuth 2.0 credentials in the application's database.
*
* @param String $userId User's ID.
* @param String $credentials Json representation of the OAuth 2.0 credentials to store.
*/
function storeCredentials($userId, $credentials) {
$_SERVER['userid'] = $userId;
}
/**
* Build a Drive service object.
*
* @param String credentials Json representation of the OAuth 2.0 credentials.
* @return Google_DriveService service object.
*/
function buildService($credentials) {
$apiClient = new Google_Client();
$apiClient->setUseObjects(true);
$apiClient->setAccessToken($credentials);
return new Google_DriveService($apiClient);
}
/**
* Send a request to the UserInfo API to retrieve the user's information.
*
* @param String credentials OAuth 2.0 credentials to authorize the request.
* @return Userinfo User's information.
* @throws NoUserIdException An error occurred.
*/
function getUserInfo($credentials) {
$apiClient = new Google_Client();
$apiClient->setUseObjects(true);
$apiClient->setAccessToken($credentials);
$userInfoService = new Google_Oauth2Service($apiClient);
$userInfo = null;
try {
$userInfo = $userInfoService->userinfo->get();
} catch (Google_Exception $e) {
print 'An error occurred: ' . $e->getMessage();
}
if ($userInfo != null && $userInfo->getId() != null) {
return $userInfo;
} else {
throw new NoUserIdException();
}
}
function retrieveAllFiles($service) {
$result = array();
$pageToken = NULL;
do {
try {
$parameters = array();
if ($pageToken) {
$parameters['pageToken'] = $pageToken;
}
$files = $service->files->listFiles($parameters);
$result = array_merge($result, $files->getItems());
$pageToken = $files->getNextPageToken();
} catch (Exception $e) {
print "An error occurred: " . $e->getMessage();
$pageToken = NULL;
}
} while ($pageToken);
return $result;
}
function printFile($service, $fileId) {
try {
$file = $service->files->get($fileId);
print "Title: " . $file->getTitle();
print "Description: " . $file->getDescription();
print "MIME type: " . $file->getMimeType();
} catch (apiException $e) {
print "An error occurred: " . $e->getMessage();
}
}
// fill your details from the google console:
$client = new Google_Client();
$client->setApplicationName('***************');
$client->setScopes(array(
'https://www.googleapis.com/auth/drive',
'https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/userinfo.profile'));
$client->setClientId('***************');
$client->setClientSecret('***************');
$client->setRedirectUri('***************/google-drive-api-php-client/serverside.php');
$client->setApprovalPrompt('force');
$client->setAccessType('offline');
$client->setDeveloperKey('***************');
// a simple code to check if the user have already login to the site and authenticate the site and if he does the site will not ask the user again for authentification and it will use the refresh token to "log" the user in
if (empty($_GET['code'])) {
// if the user visit the website for the first time he need to authentificate (redirecting the website to google)!
if (empty($_SESSION['access_token']) && !isset($_SESSION['refresh_token'])) {
header('Location: ' . $client->createAuthUrl());
// if the user have already visited the site, but the access token have expired use this code
} elseif (empty($_SESSION['access_token']) && isset($_SESSION['refresh_token'])) {
echo "refresh token1" . "<br>";
$google_token = json_decode($_SESSION['refresh_token'], true);
$client->refreshToken($google_token['refresh_token']);
$_SESSION['access_token']= $client->getAccessToken();
}
} elseif (!empty($_GET['code']) && empty($_SESSION['access_token'])) {
// if the user is visiting the website for the first time and dont have refresh token:
if (!isset($_SESSION['refresh_token'])) {
echo "access token" . "<br>";
$client->authenticate($_GET['code']);
$_SESSION['access_token'] = $client->getAccessToken();
$_SESSION['refresh_token'] = $_SESSION['access_token'];
// this will never execute, but i put it anyway :) if the user have already visited the site, but the access token have expired use this code (its the same as the above)
} elseif (isset($_SESSION['refresh_token'])) {
echo "refresh token2" . "<br>";
$google_token = json_decode($_SESSION['refresh_token'], true);
$client->refreshToken($google_token['refresh_token']);
$_SESSION['access_token']= $client->getAccessToken();
}
}
// if the access token have expired use the refresh token to gain access instead:
if ($client->isAccessTokenExpired()) {
$google_token = json_decode($_SESSION['refresh_token'], true);
$client->refreshToken($google_token['refresh_token']);
$_SESSION['access_token']= $client->getAccessToken();
}
// unset the sessions for testing:
// unset($_SESSION['access_token']);
// unset($_SESSION['refresh_token']);
// get some info from the user Google API like the file info
if (!empty($_SESSION['access_token'])) {
// create the service in this case Google Drive
$service = buildService($_SESSION['access_token']);
// mark the file ID
$fileid = "*******************";
// print the access token
echo "<pre>";
print_r(getUserInfo($_SESSION['access_token']));
echo "</pre>";
// print file metadata from google drive
// echo "<pre>";
// print_r(printFile($service, $fileid));
// echo "</pre>";
}
// printing the session for testing...
echo "<pre>";
print_r($_SESSION);
echo "</pre>";
// print the refresh token for testing
print_r($_SESSION['refresh_token']);
// print echo to see if the code is executing till the end or there is a fatal error someone in the code :)
echo "string";
?>