public void ProcessRequest(HttpContext context)
{
string returnUrl = "/";
//protect against no httpcontext or cs context
try
{
//exclude logout and register urls from setting the return url
//grab the invitation key
Guid?invitationKey = null;
Guid parsedInvitationKey;
//add user invitation guid if present...
var i = SamlHelpers.GetInvitationKey();
if (i != null)
{
if (Guid.TryParse(i, out parsedInvitationKey))
{
invitationKey = parsedInvitationKey;
}
}
//note we still have the case where the invitation may be in the return url
var returnUrlParam = context.Request.QueryString[SamlHelpers.ReturnUrlParameterName];
if (IsValidReturnUrl(returnUrlParam)) //ignores pages like logout or register or errors
{
returnUrl = context.Request[SamlHelpers.ReturnUrlParameterName];
//if there is more than one return url, just use the first
returnUrl = returnUrl.Split(',')[0];
}
SamlHelpers.SetCookieReturnUrl(returnUrl, invitationKey);
}
catch (Exception ex)
{
Apis.Get <IEventLog>().Write("Error Creating SAML return URL cookie:" + ex, new EventLogEntryWriteOptions {
Category = "SAML", EventType = "Error", EventId = 1000
});
}
var samlPlugin = PluginManager.GetSingleton <SamlOAuthClient>();
if (samlPlugin == null)
{
throw new InvalidOperationException("Unable to load the SamlAuthentication plugin; saml logins are not supported in the current configuration");
}
var requestId = "_" + Guid.NewGuid().ToString();
var issuerUrl = Apis.Get <IUrl>().Absolute(Apis.Get <ICoreUrls>().Home());
//if (samlPlugin.IdpBindingType == SamlBinding.SAML11_POST && (samlPlugin.IdpAuthRequestType != AuthnBinding.IDP_Initiated) || (samlPlugin.IdpAuthRequestType != AuthnBinding.WSFededation))
// throw new NotSupportedException("Only bare get requests (without querystring or signature) are supported by the SAML 11 AuthN handler at this time");
switch (samlPlugin.IdpAuthRequestType)
{
case AuthnBinding.WSFededation:
context.Response.Redirect(string.Format(WsFederationSignInTemplate, samlPlugin.IdpUrl, HttpUtility.UrlEncode(Apis.Get <IUrl>().Absolute("~/")), HttpUtility.UrlEncode(Apis.Get <IUrl>().Absolute("~/samlresponse"))));
HttpContext.Current.ApplicationInstance.CompleteRequest();
break;
case AuthnBinding.IDP_Initiated:
context.Response.Redirect(samlPlugin.IdpUrl, false);
HttpContext.Current.ApplicationInstance.CompleteRequest();
break;
case AuthnBinding.Redirect: //untested
context.Response.Redirect(samlPlugin.IdpUrl + "?SAMLRequest=" + HttpUtility.UrlEncode(System.Text.Encoding.Default.GetString(ZipStr(GetSamlAuthnBase64(requestId, samlPlugin.IdpUrl, issuerUrl)))) + "&RelayState=" + HttpUtility.UrlEncode("/SamlLogin?ReturnUrl=" + returnUrl), false);
HttpContext.Current.ApplicationInstance.CompleteRequest();
break;
case AuthnBinding.SignedRedirect:
var redirectThumbprint = samlPlugin.AuthNCertThumbrint;
if (string.IsNullOrEmpty(redirectThumbprint))
{
throw new ArgumentNullException("Invalid configuration, the SAML Plugin is set to sign AuthN requests, but no certificate thumbprint is configured", "samlPlugin.AuthNCertThumbrint");
}
throw new NotImplementedException();
//break;
case AuthnBinding.POST:
var authXML = GetSamlAuthnXml(requestId, samlPlugin.IdpUrl, issuerUrl);
ValidateXML(authXML);
POSTAuthNRequest(samlPlugin.IdpUrl, authXML);
break;
case AuthnBinding.SignedPOST:
var postThumbprint = samlPlugin.AuthNCertThumbrint;
if (string.IsNullOrEmpty(postThumbprint))
{
throw new ArgumentNullException("Invalid configuration, the SAML Plugin is set to sign AuthN requests, but no certificate thumbprint is configured", "samlPlugin.AuthNCertThumbrint");
}
var signedAuthXML = GetSamlAuthnXml(requestId, samlPlugin.IdpUrl, issuerUrl, postThumbprint);
ValidateXML(signedAuthXML);
POSTAuthNRequest(samlPlugin.IdpUrl, signedAuthXML);
break;
}
}
public void ProcessRequest(HttpContext context)
{
var samlPlugin = PluginManager.GetSingleton <SamlOAuthClient>();
if (samlPlugin == null || !samlPlugin.Enabled)
{
throw new InvalidOperationException("Unable to load the SamlAuthentication plugin; saml logins are not supported in the current configuration");
}
if (SamlHelpers.IsSignInResponse)
{
//use httpcontextuser is set to true, so this code below will only ever fire if there is a HttpContextUser set
SamlTokenData samlTokenData = null;
if (!SamlHelpers.IsSignInResponse)
{
throw new NotSupportedException("Unable to detect a saml response; please check your identity provider is configured properly");
}
//This call gets the saml token from the response, validates it and turns it into our internal class for use and storage
samlTokenData = samlPlugin.TokenProcessor.GetSamlTokenData();
if (samlTokenData == null)
{
throw new InvalidOperationException("No valid saml token was decected, login failed");
}
if (samlTokenData.IsExistingUser())
{
if (samlPlugin.PersistClaims)
{
SqlData.SaveSamlToken(samlTokenData);
}
//since new users will have oauth links auto created, we only run this code for existing users
var samlOAuthLinkManager = PluginManager.GetSingleton <ISamlOAuthLinkManager>();
if (samlOAuthLinkManager != null && samlOAuthLinkManager.Enabled)
{
// makes sure the user is not prompted to "link accounts" during the login form
//if there is no suitable entry in the te_OAuth_Links table
samlOAuthLinkManager.EnsureOAuthLink(samlTokenData);
}
}
//Store out the SAML Token Data in an encrypted cookie for use on the OAuth endpoint which requires a GET request
//var tokenKey = samlTokenData.SaveToSecureCookie();
//Store out the SAML Token Data in a table on the database for use in the OAuth endpoint which requires a GET request
//This was added to prevent issues with cookie size - Tony Triguero 2/14/2019
var tokenKey = samlTokenData.SaveTokenDataToDatabase();
//build the oauth url based on the current url
UriBuilder oAuthUrl = new UriBuilder(context.Request.Url);
oAuthUrl.Path = oAuthUrl.Path.Replace("samlresponse/", string.Format("oauth", samlPlugin.ClientType)).Replace("samlresponse", string.Format("oauth", samlPlugin.ClientType));
var queryString = HttpUtility.ParseQueryString(oAuthUrl.Query);
queryString.Add("type", samlPlugin.ClientType);
queryString.Add(SamlOAuthClient.oauthTokeyQuerystringKey, tokenKey.ToString());
//Invitation Key
string invitationKey = SamlHelpers.GetInvitationKey();
if (!String.IsNullOrEmpty(invitationKey) && !queryString.ToString().ToLower().Contains("invitationkey="))
{
queryString.Add(SamlHelpers.InvitationKeyParameterName, invitationKey);
}
//Return Url (note this must return back to the login page, the actual final return url should be double encoded)
string returnUrl = GetReturnUrl();
if (!String.IsNullOrEmpty(returnUrl) && !queryString.ToString().ToLower().Contains("returnurl="))
{
queryString.Add(SamlHelpers.ReturnUrlParameterName, string.Format("{0}&{1}={2}", samlPlugin.CallbackUrl, SamlHelpers.ReturnUrlParameterName, returnUrl)); //the ToString of the queryString object will properly encode the &ReturnUrl
}
oAuthUrl.Query = queryString.ToString();
//Ensure HTTPS so our secure cookie can be read
if (samlPlugin.SecureCookie || HttpContext.Current.Request.IsSecureConnection)
{
oAuthUrl.Scheme = Uri.UriSchemeHttps;
oAuthUrl.Port = -1; // default port for scheme
}
//redirect to the oauth endpoint
var url = oAuthUrl.Uri.AbsoluteUri;
context.Response.Redirect(oAuthUrl.Uri.AbsoluteUri);
context.ApplicationInstance.CompleteRequest();
context.Response.End();
}
else if (SamlHelpers.IsSignOutResponse)
{
var platformLogout = PluginManager.GetSingleton <IPlatformLogout>();
if (platformLogout == null || !platformLogout.Enabled)
{
throw new NotSupportedException("Unable to support WSFederation logouts without an appropriate IPlatformLogout plugin");
}
platformLogout.Logout();
context.Response.Clear();
context.Response.Buffer = true;
// Read the original file from disk
Stream myFileStream = EmbeddedResources.GetStream("Telligent.Services.SamlAuthenticationPlugin.Resources.Images.oauth.gif");
long FileSize = myFileStream.Length;
byte[] Buffer = new byte[(int)FileSize];
myFileStream.Read(Buffer, 0, (int)FileSize);
myFileStream.Close();
// Tell the browser stuff about the file
context.Response.AddHeader("Content-Length", FileSize.ToString());
context.Response.AddHeader("Content-Disposition", "inline; filename=oauth.gif");
context.Response.ContentType = "image/gif";
// Send the data to the browser
context.Response.BinaryWrite(Buffer);
context.ApplicationInstance.CompleteRequest();
context.Response.End();
return;
}
//if this is not a sign-in response, we should probably redirect to login.aspx
throw new ArgumentException("The SAML token was not found in the HttpContext.Current.Request, please check the configuration and try again");
}
