/// <summary>
/// Instantiates the OAuth2 flow to retrieve authorization code for google cloud storage, and schedules
/// invocation of the code handler on the received authorization code once it is available. Throws an exception
/// once there is a failure to get the authorization code from the oauth2 flow.
/// </summary>
/// <param name="onAuthorizationCodeAction">An action to invoke on the authorization code instance when it is
/// available.</param>
private static void GetAuthCode(Action <AuthorizationCode> onAuthorizationCodeAction)
{
var server = new OAuth2Server(authorizationResponse => { _authorizationResponse = authorizationResponse; });
server.Start();
var redirectUri = server.CallbackEndpoint;
_onOAuthResponseReceived = authorizationResponse =>
{
if (!string.Equals("code", authorizationResponse.Key))
{
throw new Exception("Could not receive required permissions");
}
var authCode = new AuthorizationCode
{
Code = authorizationResponse.Value,
RedirectUri = redirectUri
};
if (onAuthorizationCodeAction != null)
{
onAuthorizationCodeAction(authCode);
}
};
// Take the user to the authorization page to authorize the application.
var credentials = OAuth2Credentials.GetCredentials();
var authorizationUrl =
string.Format("{0}?scope={1}&access_type=offline&redirect_uri={2}&response_type=code&client_id={3}",
credentials.auth_uri, CloudStorageFullControlScope, redirectUri, credentials.client_id);
Application.OpenURL(authorizationUrl);
}
/// <summary>
/// Sends an HTTP request to OAuth2 token uri to retrieve, process and store needed tokens.
/// </summary>
/// <param name="grantDictionary">A dictionary containing OAuth2 grant type and grant values to be used when
/// requesting access token. The dictionary will be mutated by adding more credentials values needed to
/// send the token request.</param>
/// <param name="postTokenAction"></param>
private static void RequestToken(Dictionary <string, string> grantDictionary, Action postTokenAction)
{
var credentials = OAuth2Credentials.GetCredentials();
grantDictionary.Add("client_id", credentials.client_id);
grantDictionary.Add("client_secret", credentials.client_secret);
WwwRequestInProgress.TrackProgress(
HttpRequestHelper.SendHttpPostRequest(credentials.token_uri, grantDictionary, null),
"Requesting access token",
completeTokenRequest =>
{
HandleTokenResponse(completeTokenRequest);
postTokenAction();
});
}
/// <summary>
/// Sends an HTTP request to GCP to create a bucket with the configured name, and invokes the response
/// handler on the HTTP response.
/// </summary>
/// <param name="onCreateBucketResponseAction">An action to be invoked on the www instance holding the HTTP request
/// once the response to the request to create bucket is available.</param>
private static void CreateBucket(Action <WWW> onCreateBucketResponseAction)
{
var credentials = OAuth2Credentials.GetCredentials();
// see https://cloud.google.com/storage/docs/creating-buckets on creating buckets.
var createBucketEndPoint = string.Format("https://www.googleapis.com/storage/v1/b?project={0}",
credentials.project_id);
var createBucketRequest = new CreateBucketRequest
{
name = QuickDeployWindow.Config.CloudStorageBucketName
};
var jsonBytes = Encoding.UTF8.GetBytes(JsonUtility.ToJson(createBucketRequest));
var createBucketWww = SendAuthenticatedPostRequest(createBucketEndPoint, jsonBytes, "application/json");
WwwRequestInProgress.TrackProgress(
createBucketWww,
string.Format("Creating bucket with name \"{0}\"", createBucketRequest.name),
onCreateBucketResponseAction);
}