/// <summary>
/// Construct a OAuth2 forwarding URI to redirect with.
/// </summary>
/// <param name="provider">OAuth2 provider wrapper.</param>
/// <param name="redirectUri">URI to redirect back to the system.</param>
/// <param name="locale">Language locale for provider interface.</param>
/// <returns>URI to redirect system to, for user authorization.</returns>
public static string CreateRedirect(OAuth2Provider provider, string redirectUri, string locale = "en")
{
var parameters = new Dictionary <string, string> {
{ "client_id", provider.ClientId },
{ "display", "page" },
{ "locale", locale },
{ "redirect_uri", redirectUri },
{ "response_type", "code" }
};
if (provider.Offline)
{
parameters.Add("access_type", "offline");
}
if (!string.IsNullOrWhiteSpace(provider.Scope))
{
parameters.Add("scope", provider.Scope);
}
if (!string.IsNullOrWhiteSpace(provider.State))
{
parameters.Add("state", provider.State);
}
var qs = BuildQueryString(parameters);
var url = provider.AuthUri + "?" + qs;
return(url);
}
/// <summary>
/// Request a new access token by refreshing an old.
/// </summary>
/// <param name="provider">OAuth2 provider wrapper.</param>
/// <param name="refreshToken">Access/refresh token to use.</param>
/// <returns>Authentication response object.</returns>
public static OAuth2AuthenticateResponse AuthenticateByToken(OAuth2Provider provider, string refreshToken)
{
var parameters = new Dictionary <string, string> {
{ "client_id", provider.ClientId },
{ "client_secret", provider.ClientSecret },
{ "refresh_token", refreshToken },
{ "grant_type", "refresh_token" }
};
if (!string.IsNullOrWhiteSpace(provider.Scope))
{
parameters.Add("scope", provider.Scope);
}
if (!string.IsNullOrWhiteSpace(provider.State))
{
parameters.Add("state", provider.State);
}
var reply = Request(
provider.AccessTokenUri,
payload: BuildQueryString(parameters));
return(InterpretReply(reply));
}
/// <summary>
/// Get user info from the providers user endpoint.
/// </summary>
/// <param name="provider">OAuth2 provider wrapper.</param>
/// <param name="accessToken">Access token to use.</param>
/// <returns>Raw data from the provider.</returns>
public static string GetUserInfo(OAuth2Provider provider, string accessToken)
{
var parameters = new Dictionary <string, string> {
{ "access_token", accessToken }
};
return(Request(provider.UserInfoUri, "GET", BuildQueryString(parameters)));
}
