/// <summary>
/// Returns the authorization URL.
/// </summary>
/// <param name="requestUri">Request URI.</param>
/// <param name="scope">Scope.</param>
/// <param name="applicationName">Application name.</param>
/// <param name="userId">User Id.</param>
/// <returns>Authorization URL.</returns>
public string GetAuthorizationUrl(System.Uri requestUri, string scope, string applicationName, int userId)
{
OAuthState state = new OAuthState(applicationName, userId);
return(string.Format("https://accounts.google.com/o/oauth2/auth?response_type=code&client_id={0}&redirect_uri={1}&scope={2}&access_type=offline&state={3}",
System.Web.HttpUtility.UrlEncode(ClientId), System.Web.HttpUtility.UrlEncode(GetReturnUrl(requestUri, applicationName)), System.Web.HttpUtility.UrlEncode(scope), System.Web.HttpUtility.UrlEncode(state.ToString())));
}
/// <summary>
/// Parses OAuth state from the given input.
/// </summary>
/// <param name="input">Input.</param>
/// <returns>OAuth state.</returns>
public static OAuthState Parse(string input)
{
int userId = 0;
string[] parts = null;
OAuthState ret = new OAuthState();
if (!string.IsNullOrEmpty(input) && input.IndexOf(':') > 0)
{
parts = input.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
if (parts != null && parts.Length == 3 && int.TryParse(parts[0], out userId))
{
ret.UserId = userId;
ret.ApplicationName = parts[1];
if (string.Compare(Utils.Crypto.GetHash(userId.ToString() + _salt + parts[1]), parts[2], StringComparison.Ordinal) != 0)
{
ret.UserId = 0;
ret.ApplicationName = string.Empty;
}
}
}
return(ret);
}
/// <summary>
/// Parses access code response.
/// </summary>
/// <param name="requestUri">Request URI.</param>
/// <returns>Access code response.</returns>
public OAuthCodeResponse ParseAccessCodeResponse(System.Uri requestUri)
{
OAuthCodeResponse ret = new OAuthCodeResponse();
NameValueCollection query = System.Web.HttpUtility.ParseQueryString(requestUri.Query ?? string.Empty);
ret.Error = System.Web.HttpUtility.UrlDecode(query["error"]);
ret.AccessCode = System.Web.HttpUtility.UrlDecode(query["code"]);
ret.State = OAuthState.Parse(System.Web.HttpUtility.UrlDecode(query["state"]));
return(ret);
}
