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(PHP ActiveX) Google Drive Refresh Access TokenDemonstrates how to automatically refresh the access token when it expires.
<?php $success = 1; // It requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // This example uses a previously obtained access token having permission for the // Google Drive scope. // The access token (and refresh token) was previously saved to a JSON file with this format: // See Get Google Drive OAuth2 Access Token // { // "access_token": "ya29.Gls-BsdxTWuenChv ... yzVIrXikkLxu5T6dy4I6GjADFardoz4Lruw", // "expires_in": 3600, // "refresh_token": "1/tMBJ ... 27D-Hk6rpQYBA", // "scope": "https://www.googleapis.com/auth/drive", // "token_type": "Bearer" // } $json = new COM("Chilkat_9_5_0.JsonObject"); $tokenFilePath = 'qa_data/tokens/googleDrive.json'; $json->LoadFile($tokenFilePath); $oauth2 = new COM("Chilkat_9_5_0.OAuth2"); $oauth2->AccessToken = $json->stringOf('access_token'); $oauth2->RefreshToken = $json->stringOf('refresh_token'); $rest = new COM("Chilkat_9_5_0.Rest"); // Connect using TLS. $bAutoReconnect = 1; $success = $rest->Connect('www.googleapis.com',443,1,$bAutoReconnect); // Provide the authentication credentials (i.e. the access token) $rest->SetAuthOAuth2($oauth2); // We'll test with a simple request to empty trash. // If our access token expired, we'll get a 401 response.. $jsonResponse = $rest->fullRequestNoBody('DELETE','/drive/v3/files/trash'); if ($rest->LastMethodSuccess != 1) { print $rest->LastErrorText . "\n"; exit; } // If the access token expired, we'll get a 401 response status with this response body: // { // "error": { // "errors": [ // { // "domain": "global", // "reason": "authError", // "message": "Invalid Credentials", // "locationType": "header", // "location": "Authorization" // } // ], // "code": 401, // "message": "Invalid Credentials" // } // } if ($rest->ResponseStatusCode == 401) { print 'Refreshing access token...' . "\n"; $oauth2->AuthorizationEndpoint = 'https://accounts.google.com/o/oauth2/v2/auth'; $oauth2->TokenEndpoint = 'https://www.googleapis.com/oauth2/v4/token'; // Replace these with actual values. $oauth2->ClientId = 'GOOGLE-CLIENT-ID'; $oauth2->ClientSecret = 'GOOGLE-CLIENT-SECRET'; $oauth2->Scope = 'https://www.googleapis.com/auth/drive'; // Use OAuth2 to refresh the access token. $success = $oauth2->RefreshAccessToken(); if ($success != 1) { print $oauth2->LastErrorText . "\n"; exit; } // Save the new access token to our XML file (so we can refresh it again when needed). $json->UpdateString('access_token',$oauth2->AccessToken); $fac = new COM("Chilkat_9_5_0.FileAccess"); $fac->WriteEntireTextFile($tokenFilePath,$json->emit(),'utf-8',0); print 'Access Token Refreshed!' . "\n"; // Retry the request with the new access token.. $jsonResponse = $rest->fullRequestNoBody('DELETE','/drive/v3/files/trash'); if ($rest->LastMethodSuccess != 1) { print $rest->LastErrorText . "\n"; exit; } } // A successful response will have a status code equal to 204 and the response body is empty. // (If not successful, then there should be a JSON response body with information..) if ($rest->ResponseStatusCode != 204) { print 'response status code = ' . $rest->ResponseStatusCode . "\n"; print 'response status text = ' . $rest->ResponseStatusText . "\n"; print 'response header: ' . $rest->ResponseHeader . "\n"; print 'response JSON: ' . $jsonResponse . "\n"; exit; } print 'Trash Emptied!' . "\n"; ?> |
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