/// <summary>
/// Saves the current sign-in information (username+token) as a browser cookie
/// and to local storage so automatic sign-in can occur with the next session. If the user is not
/// signed in, removes the token from local storage - keeps the username to
/// seed the sign-in dialog.
/// </summary>
void SaveTokenToStorage()
{
if (Current != null) // success
{
// save the cookie
//
CachedSignIn signIn = new CachedSignIn()
{
Email = Current.Username, FullName = Current.FullName, Token = this.Token
};
string json = WebUtil.SaveObject <CachedSignIn>(signIn);
WebUtil.SetCookie("esri_auth", HttpUtility.UrlEncode(json), ArcGISOnlineEnvironment.HostDomain, "/", 14);
}
else
{
WebUtil.DeleteCookie("esri_auth", ArcGISOnlineEnvironment.HostDomain);
}
// save to username to isolated storage to seed the sign-in dialog later
//
if (!IsolatedStorageFile.IsEnabled || Current == null)
{
return;
}
IsolatedStorageSettings settings = IsolatedStorageSettings.ApplicationSettings;
if (settings.Contains("username"))
{
settings["username"] = Current.Username;
}
else
{
settings.Add("username", Current.Username);
}
settings.Save();
}
/// <summary>
/// Saves the current sign-in information (username+token) as a browser cookie
/// and to local storage so automatic sign-in can occur with the next session. If the user is not
/// signed in, removes the token from local storage - keeps the username to
/// seed the sign-in dialog.
/// </summary>
void SaveTokenToStorage()
{
if (Current != null) // success
{
// save the cookie
//
CachedSignIn signIn = new CachedSignIn() { Email = Current.Username, FullName = Current.FullName, Token = this.Token };
string json = WebUtil.SaveObject<CachedSignIn>(signIn);
WebUtil.SetCookie("esri_auth", HttpUtility.UrlEncode(json), ArcGISOnlineEnvironment.HostDomain, "/", 14);
}
else
WebUtil.DeleteCookie("esri_auth", ArcGISOnlineEnvironment.HostDomain);
// save to username to isolated storage to seed the sign-in dialog later
//
if (!IsolatedStorageFile.IsEnabled || Current == null)
return;
IsolatedStorageSettings settings = IsolatedStorageSettings.ApplicationSettings;
if (settings.Contains("username"))
settings["username"] = Current.Username;
else
settings.Add("username", Current.Username);
settings.Save();
}
/// <summary>
/// Initiates sign-in based on the username and token stored in user settings.
/// </summary>
public void SignInFromLocalStorage(EventHandler <RequestEventArgs> callback)
{
string username = null;
string token = null;
// see if the browser cookie is present
//
string cookie = WebUtil.GetCookie("esri_auth");
if (cookie != null)
{
cookie = HttpUtility.UrlDecode(cookie);
CachedSignIn signIn = WebUtil.ReadObject <CachedSignIn>(new MemoryStream(Encoding.UTF8.GetBytes(cookie)));
username = signIn.Email;
token = signIn.Token;
}
if (username != null && token != null)
{
string url = _agol.Url + "community/users/" + username + "?token=" + token + "&f=json";
WebUtil.OpenReadAsync(url, null, (sender, e) =>
{
if (e.Error != null) // bail on error
{
if (callback != null)
{
callback(null, new RequestEventArgs()
{
Error = e.Error
});
}
return;
}
User cachedUser = WebUtil.ReadObject <User>(e.Result);
if (cachedUser != null && !string.IsNullOrEmpty(cachedUser.Username))
{
// Add credential to IdentityManager
if (!string.IsNullOrEmpty(token) && !string.IsNullOrEmpty(username) &&
IdentityManager.Current != null &&
IdentityManager.Current.FindCredential(_agol.Url, username) == null)
{
IdentityManager.Credential cred = new IdentityManager.Credential()
{
UserName = username,
Url = _agol.Url,
Token = token
};
IdentityManager.Current.AddCredential(cred);
}
Current = cachedUser;
Token = token;
}
else
{
Current = null;
Token = null;
}
if (callback != null) // notify caller of success
{
callback(null, new RequestEventArgs());
}
if (SignedInOut != null)
{
SignedInOut(null, EventArgs.Empty);
}
});
}
else if (callback != null)
{
callback(null, new RequestEventArgs()); // call the client back in any case
}
}
