private SPOAuthCookies GetSPOAuthCookies(SamlSecurityToken stsToken)
{
try
{
// signs in to SPO with the security token issued by MSO STS and gets the fed auth cookies
// the fed auth cookie needs to be attached to all SPO REST services requests
Uri siteUri = spSiteUrl;
Uri wsSigninUrl = new Uri(String.Format("{0}://{1}/{2}", siteUri.Scheme, siteUri.Authority, spowssigninUri));
var clientHandler = new HttpClientHandler();
SendHttpRequest(
wsSigninUrl,
HttpMethod.Post,
new MemoryStream(stsToken.Token),
"application/x-www-form-urlencoded",
clientHandler);
SPOAuthCookies spoAuthCookies = new SPOAuthCookies();
spoAuthCookies.FedAuth = clientHandler.CookieContainer.GetCookies(wsSigninUrl)["FedAuth"].Value;
spoAuthCookies.RtFA = clientHandler.CookieContainer.GetCookies(wsSigninUrl)["rtFA"].Value;
spoAuthCookies.Expires = stsToken.Expires;
spoAuthCookies.Host = wsSigninUrl;
return(spoAuthCookies);
}
catch (Exception ex)
{
return(null);
}
}
public SharePointAuth(Uri spSiteUrl, string username, string password, bool useIntegratedWindowsAuth)
{
this.spSiteUrl = spSiteUrl;
this.username = username;
this.password = password;
this.useIntegratedWindowsAuth = useIntegratedWindowsAuth;
stsAuthToken = new SamlSecurityToken();
}
public CookieContainer GetCookieContainer()
{
if (stsAuthToken != null)
{
if (DateTime.Now > stsAuthToken.Expires)
{
stsAuthToken = GetMsoStsSAMLToken();
if (stsAuthToken.Token != null)
{
SPOAuthCookies cookies = GetSPOAuthCookies(stsAuthToken);
CookieContainer cc = new CookieContainer();
Cookie samlAuthCookie = new Cookie("FedAuth", cookies.FedAuth)
{
Path = "/",
Expires = stsAuthToken.Expires,
Secure = cookies.Host.Scheme.Equals("https"),
HttpOnly = true,
Domain = cookies.Host.Host
};
cc.Add(spSiteUrl, samlAuthCookie);
Cookie rtFACookie = new Cookie("rtFA", cookies.RtFA)
{
Path = "/",
Expires = this.stsAuthToken.Expires,
Secure = cookies.Host.Scheme.Equals("https"),
HttpOnly = true,
Domain = cookies.Host.Host
};
cc.Add(spSiteUrl, rtFACookie);
return(cc);
}
}
}
return(null);
}
private SamlSecurityToken GetMsoStsSAMLToken()
{
// Makes a request that conforms with the WS-Trust standard to
// Microsoft Online Services Security Token Service to get a SAML
// security token back so we can then use it to sign the user to SPO
var samlST = new SamlSecurityToken();
byte[] saml11RTBytes = null;
string logonToken = null;
// find out whether the user's domain is a federated domain
adfsAuthUrl = GetAdfsAuthUrl();
// get logon token using windows integrated auth when the user is connected to the corporate network
if (adfsAuthUrl != null && useIntegratedWindowsAuth)
{
UriBuilder ub = new UriBuilder();
ub.Scheme = adfsAuthUrl.Scheme;
ub.Host = adfsAuthUrl.Host;
ub.Path = string.Format("{0}auth/integrated/", adfsAuthUrl.LocalPath);
// specify in the query string we want a logon token to present to the Microsoft Federation Gateway
// for the corresponding user
ub.Query = String.Format("{0}&wa=wsignin1.0&wtrealm=urn:federation:MicrosoftOnline", adfsAuthUrl.Query.Remove(0, 1)).
Replace("&username="******"&username={0}", username));
adfsIntegratedAuthUrl = ub.Uri;
// get the logon token from the corporate ADFS using Windows Integrated Auth
logonToken = GetAdfsSAMLTokenWinAuth();
if (!string.IsNullOrEmpty(logonToken))
{
// generate the WS-Trust security token request SOAP message passing in the logon token we got from the corporate ADFS
// and the site we want access to
saml11RTBytes = Encoding.UTF8.GetBytes(ParameterizeSoapRequestTokenMsgWithAssertion(
spSiteUrl.ToString(),
logonToken,
msoStsUrl));
}
}
// get logon token using the user's corporate credentials. Likely when not connected to the corporate network
if (logonToken == null && adfsAuthUrl != null && !string.IsNullOrEmpty(password))
{
logonToken = GetAdfsSAMLTokenUsernamePassword(); // get the logon token from the corporate ADFS proxy usernamemixed enpoint
if (logonToken != null)
{
// generate the WS-Trust security token request SOAP message passing in the logon token we got from the corporate ADFS
// and the site we want access to
saml11RTBytes = Encoding.UTF8.GetBytes(ParameterizeSoapRequestTokenMsgWithAssertion(
spSiteUrl.ToString(),
logonToken,
msoStsUrl));
}
}
if (logonToken == null && this.adfsAuthUrl == null && string.IsNullOrEmpty(password)) // login with O365 credentials. Not a federated login.
{
// generate the WS-Trust security token request SOAP message passing in the user's credentials and the site we want access to
saml11RTBytes = Encoding.UTF8.GetBytes(ParameterizeSoapRequestTokenMsgWithUsernamePassword(
spSiteUrl.ToString(),
username,
password,
msoStsUrl));
}
if (saml11RTBytes != null)
{
// make the post request to MSO STS with the WS-Trust payload
byte[] response = SendHttpRequest(
new Uri(msoStsUrl),
HttpMethod.Post,
new MemoryStream(saml11RTBytes),
"application/soap+xml; charset=utf-8",
null);
StreamReader sr = new StreamReader(new MemoryStream(response));
// the SAML security token is in the BinarySecurityToken element of the message body
XDocument xDoc = XDocument.Parse(sr.ReadToEnd());
var binaryST = from e in xDoc.Descendants()
where e.Name == XName.Get("BinarySecurityToken", wsse)
select e;
// get the security token expiration date from the message body
var expires = from e in xDoc.Descendants()
where e.Name == XName.Get("Expires", wsu)
select e;
if (binaryST.FirstOrDefault() != null && expires.FirstOrDefault() != null)
{
samlST.Token = Encoding.UTF8.GetBytes(binaryST.FirstOrDefault().Value);
samlST.Expires = DateTime.Parse(expires.FirstOrDefault().Value);
}
}
return(samlST);
}
