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Upload File : |
<?php
/*
* Copyright 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
include_once __DIR__ . '/../vendor/autoload.php';
include_once "templates/base.php";
echo pageHeader("File Download - Downloading a large file");
/*************************************************
* Ensure you've downloaded your oauth credentials
************************************************/
if (!$oauth_credentials = getOAuthCredentialsFile()) {
echo missingOAuth2CredentialsWarning();
return;
}
/************************************************
* The redirect URI is to the current page, e.g:
* http://localhost:8080/large-file-download.php
************************************************/
$redirect_uri = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
$client = new Google\Client();
$client->setAuthConfig($oauth_credentials);
$client->setRedirectUri($redirect_uri);
$client->addScope("https://www.googleapis.com/auth/drive");
$service = new Google\Service\Drive($client);
/************************************************
* If we have a code back from the OAuth 2.0 flow,
* we need to exchange that with the
* Google\Client::fetchAccessTokenWithAuthCode()
* function. We store the resultant access token
* bundle in the session, and redirect to ourself.
************************************************/
if (isset($_GET['code'])) {
$token = $client->fetchAccessTokenWithAuthCode($_GET['code']);
$client->setAccessToken($token);
// store in the session also
$_SESSION['upload_token'] = $token;
// redirect back to the example
header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
}
// set the access token as part of the client
if (!empty($_SESSION['upload_token'])) {
$client->setAccessToken($_SESSION['upload_token']);
if ($client->isAccessTokenExpired()) {
unset($_SESSION['upload_token']);
}
} else {
$authUrl = $client->createAuthUrl();
}
/************************************************
* If we're signed in then lets try to download our
* file.
************************************************/
if ($client->getAccessToken()) {
// Check for "Big File" and include the file ID and size
$files = $service->files->listFiles([
'q' => "name='Big File'",
'fields' => 'files(id,size)'
]);
if (count($files) == 0) {
echo "
<h3 class='warn'>
Before you can use this sample, you need to
<a href='/large-file-upload.php'>upload a large file to Drive</a>.
</h3>";
return;
}
// If this is a POST, download the file
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
// Determine the file's size and ID
$fileId = $files[0]->id;
$fileSize = intval($files[0]->size);
// Get the authorized Guzzle HTTP client
$http = $client->authorize();
// Open a file for writing
$fp = fopen('Big File (downloaded)', 'w');
// Download in 1 MB chunks
$chunkSizeBytes = 1 * 1024 * 1024;
$chunkStart = 0;
// Iterate over each chunk and write it to our file
while ($chunkStart < $fileSize) {
$chunkEnd = $chunkStart + $chunkSizeBytes;
$response = $http->request(
'GET',
sprintf('/drive/v3/files/%s', $fileId),
[
'query' => ['alt' => 'media'],
'headers' => [
'Range' => sprintf('bytes=%s-%s', $chunkStart, $chunkEnd)
]
]
);
$chunkStart = $chunkEnd + 1;
fwrite($fp, $response->getBody()->getContents());
}
// close the file pointer
fclose($fp);
// redirect back to this example
header('Location: ' . filter_var($redirect_uri . '?downloaded', FILTER_SANITIZE_URL));
}
}
?>
<div class="box">
<?php if (isset($authUrl)) : ?>
<div class="request">
<a class='login' href='<?= $authUrl ?>'>Connect Me!</a>
</div>
<?php elseif (isset($_GET['downloaded'])) : ?>
<div class="shortened">
<p>Your call was successful! Check your filesystem for the file:</p>
<p><code><?= __DIR__ . DIRECTORY_SEPARATOR ?>Big File (downloaded)</code></p>
</div>
<?php else : ?>
<form method="POST">
<input type="submit" value="Click here to download a large (20MB) test file" />
</form>
<?php endif ?>
</div>
<?= pageFooter(__FILE__);