public async Task<ActionResult> Index()
{
// If any message was returned, add it to the ViewBag
ViewBag.Message = TempData["message"];
string redirectUri = Url.Action("Authorize", "Home", null, Request.Url.Scheme);
OAuthHelper oauthHelper = new OAuthHelper(authority, appId, appSecret);
if (Session["user_name"] != null && Session["user_id"] != null)
{
// Make sure token is still good
try
{
string token = await oauthHelper.GetAccessToken((string)Session["user_id"], redirectUri);
if (!string.IsNullOrEmpty(token))
{
ViewBag.UserName = (string)Session["user_name"];
return View();
}
}
catch (Exception)
{
// Clear session and have user login again
Session.Remove("user_name");
Session.Remove("user_id");
}
}
// We don't have a token in the cache OR the token couldn't be refreshed
// We need to have the user sign in
string state = Guid.NewGuid().ToString();
string nonce = Guid.NewGuid().ToString();
Session["auth_state"] = state;
Session["auth_nonce"] = nonce;
ViewBag.LoginUri = oauthHelper.GetAuthorizationUrl(scopes, redirectUri, state, nonce);
return View();
}
public async Task<ActionResult> Authorize()
{
string authState = Request.Params["state"];
string expectedState = (string)Session["auth_state"];
Session.Remove("auth_state");
// Make sure that the state passed by the caller matches what we expect
if (!authState.Equals(expectedState))
{
TempData["error_message"] = "The auth state did not match the expected value. Please try again.";
return RedirectToAction("Error");
}
string authCode = Request.Params["code"];
string idToken = Request.Params["id_token"];
// Make sure we got back an auth code and ID token
if (string.IsNullOrEmpty(authCode) || string.IsNullOrEmpty(idToken))
{
string error = Request.Params["error"];
string error_description = Request.Params["error_description"];
if (string.IsNullOrEmpty(error) && string.IsNullOrEmpty(error_description))
{
TempData["error_message"] = "Missing authorization code and/or ID token from redirect.";
}
else
{
TempData["error_message"] = string.Format("Error: {0} - {1}", error, error_description);
}
return RedirectToAction("Error");
}
// Check the nonce in the ID token against what we expect
string nonce = (string)Session["auth_nonce"];
Session.Remove("auth_nonce");
if (!OpenIdToken.ValidateOpenIdToken(idToken, nonce))
{
TempData["error_message"] = "Invalid ID token.";
return RedirectToAction("Error");
}
OpenIdToken userId = OpenIdToken.ParseOpenIdToken(idToken);
OAuthHelper oauthHelper = new OAuthHelper(authority, appId, appSecret);
string redirectUri = Url.Action("Authorize", "Home", null, Request.Url.Scheme);
try
{
TokenRequestSuccessResponse response = await oauthHelper.GetTokensFromAuthority("authorization_code", authCode, redirectUri, userId.oid);
Session["user_name"] = GetEmailFromIdToken(response.id_token);
Session["user_id"] = userId.oid;
}
catch (Exception ex)
{
TempData["error_message"] = ex.Message;
return RedirectToAction("Error");
}
return Redirect("/");
}
public async Task<ActionResult> Calendar()
{
string userId = (string)Session["user_id"];
if (string.IsNullOrEmpty(userId))
{
TempData["message"] = "Please sign in to continue";
return Redirect("/");
}
OAuthHelper oauthHelper = new OAuthHelper(authority, appId, appSecret);
string redirectUri = Url.Action("Authorize", "Home", null, Request.Url.Scheme);
string accessToken = await oauthHelper.GetAccessToken(userId, redirectUri);
if (string.IsNullOrEmpty(accessToken))
{
TempData["message"] = "Please sign in to continue";
return Redirect("/");
}
var client = new Outlook();
client.anchorMailbox = (string)Session["user_name"];
ViewBag.UserName = client.anchorMailbox;
DateTime viewStart = DateTime.Now.ToUniversalTime();
DateTime viewEnd = viewStart.AddHours(3);
var result = await client.GetCalendarView(accessToken, client.anchorMailbox, viewStart, viewEnd);
return View(result);
}
public ActionResult Logout()
{
OAuthHelper oauthHelper = new OAuthHelper(authority, appId, appSecret);
oauthHelper.LogOut((string)Session["user_id"]);
Session.Remove("user_name");
Session.Remove("user_id");
return Redirect("/");
}