public string GetAuthorizationCodeRequestUrl(OAuth2Credential credential, OAuth2TokenRequestSettings requestSettings)
{
if (credential == null)
{
throw new ArgumentNullException(nameof(credential));
}
if (requestSettings == null)
{
throw new ArgumentNullException(nameof(requestSettings));
}
if (!credential.RedirectUrls.Contains(requestSettings.RedirectUri))
{
throw new ArgumentException("RedirectUri must match one of the values in credential.RedirectUrls", nameof(requestSettings));
}
var queryParams = new Dictionary <string, string>();
queryParams.Add("response_type", "code");
queryParams.Add("client_id", credential.ClientId);
queryParams.Add("redirect_uri", requestSettings.RedirectUri);
queryParams.Add("scope", string.Join(" ", requestSettings.Scopes));
queryParams.Add("state", requestSettings.State);
if (!requestSettings.IsOnlineAccess)
{
queryParams.Add("access_type", "offline");
}
if (requestSettings.Prompts.Count > 0)
{
if (requestSettings.Prompts.Contains(OAuth2TokenRequestPrompt.None))
{
queryParams.Add("prompt", "none");
}
else
{
var prompts = new List <string>();
foreach (var prompt in requestSettings.Prompts)
{
switch (prompt)
{
case OAuth2TokenRequestPrompt.Consent: prompts.Add("consent"); break;
case OAuth2TokenRequestPrompt.SelectAccount: prompts.Add("select_account"); break;
}
}
queryParams.Add("prompt", string.Join(" ", prompts));
}
}
if (!string.IsNullOrEmpty(requestSettings.LoginHint))
{
queryParams.Add("login_hint", requestSettings.LoginHint);
}
if (requestSettings.IncludeGrantedScopes)
{
queryParams.Add("include_granted_scopes", "true");
}
string queryString = _net.GetQueryString(queryParams);
return($"{AuthorizationEndpoint}?{queryString}");
}
public async Task <OAuth2TokenInfo> GetTokenInfoAsync(OAuth2Credential credential, string redirectUri, string authorizationCode)
{
var queryParams = new Dictionary <string, string>();
queryParams.Add("code", authorizationCode);
queryParams.Add("client_id", credential.ClientId);
queryParams.Add("client_secret", credential.ClientSecret);
queryParams.Add("redirect_uri", redirectUri);
queryParams.Add("grant_type", "authorization_code");
var queryString = _net.GetQueryString(queryParams);
var request = _net.CreateHttp(TokenEndpoint);
request.Method = "POST";
request.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
request.Headers[HttpRequestHeader.ContentLength] = Encoding.UTF8.GetByteCount(queryString).ToString();
using (var stream = await request.GetRequestStreamAsync().ConfigureAwait(false))
using (var writer = new StreamWriter(stream))
{
await writer.WriteAsync(queryString).ConfigureAwait(false);
}
DateTime issuedTime = DateTime.UtcNow;
using (var response = await request.GetResponseAsync().ConfigureAwait(false))
{
var jsonContent = await _net.GetResponseTextAsync(response).ConfigureAwait(false);
if (response.StatusCode == HttpStatusCode.OK)
{
var tokenInfo = OAuth2TokenInfo.CreateFromJson(jsonContent);
tokenInfo.IssuedTime = issuedTime;
return(tokenInfo);
}
else
{
throw new WebException(jsonContent, WebExceptionStatus.ReceiveFailure);
}
}
}