How to configure SSO on a intranet page (SharePoint)

[Anonymous]

Hi,

I have been trying to configure SSO on our organization SharePoint website using PVA. But I don't see it to be working. I have been referring to the below URLs:

SSO doc 

https://docs.microsoft.com/en-us/power-virtual-agents/configure-sso#:~:text=Power%20Virtual%20Agents....

GitHub Sample code doc

https://github.com/microsoft/PowerVirtualAgentsSamples/blob/master/BuildYourOwnCanvasSamples/3.singl...

I have created a HTML file adding the SSO code provided from the above doc and published in the SharePoint website. I do not wish to see the login sign in card which asks to pass the token rather I need to Sign-in directly once I click the Chatbot button.

I have also posted regarding the same in the past as well. But no luck. Any help is much appreciated. 

Regards,

Hemanth

[Anonymous · Accepted solution]

Hi @Anonymous 

Not sure if you are still facing issue with SSO working. I have got this issue fixed on my end and would like to share some inputs on that

1) I have seen the behavior of SSO and login that shows up in PVA bot is not consistent among browsers. Also you may be aware that the login status is stored in local stroage/session as specified in the MSAL.

2) I also saw that the code in github had issues related to how userId is passed. The particular line that was causing this login to come was this one below:

var userID = clientApplication.account!=null && clientApplication.account.accountIdentifier != null ?
("<Prefix>" + clientApplication.account.accountIdentifier).substr(0, 64) :
(Math.random().toString() + Date.now().toString()).substr(0, 64); // Make sure this will not exceed 64 characters

The userID is being used in the webchat to pass the UserID and this is supposed to be the User Id from AAD which is not the case with the <Prefix>. I fixed this to pass just the Id and no prefix.

var userID = clientApplication.account!=null && clientApplication.account.accountIdentifier != null ?
clientApplication.account.accountIdentifier:
(Math.random().toString() + Date.now().toString()).substr(0, 64); // Make sure this will not exceed 64 characters

This should take care of passing right UserID

if (action.type === 'DIRECT_LINE/CONNECT_FULFILLED')
{
/*
dispatch({
type: 'WEB_CHAT/SEND_EVENT',
payload: {
name: 'startConversation',
type: 'event',
value: {
text: "Hello"
}
}
});
return next(action);
*/
}

This is the code that is causing the Login to appear always. One more fix which I did in my case is to force the user login to happen before the webchat is displayed. This will make sure that the user token is created when webchat is initialized and what I have noticed is that after the below MSAL js changes, I never see a Login box in the chat.

if (!clientApplication)
{
clientApplication = new Msal.UserAgentApplication(msalConfig);
clientApplication.handleRedirectCallback(authRedirectCallBack);

//Below code will silently try to get token without popup. If there is no login already exists it will throw exception.
//As 2nd step, Login will be forced using LoginRedirect method
var newRequest =
{
scopes: ["user.read", 'openid', 'profile'],
}

clientApplication.acquireTokenSilent(newRequest).then(function(response)
{
//Now get the user display name
let user = clientApplication.getAccount();
document.getElementById("divUser").style.display="block";
document.getElementById("userName").innerHTML = " " + user.name;
}
).catch(function (error)
{
document.getElementById("divUser").style.display="block";
//Now get the user display name
document.getElementById("userName").innerHTML = "Not Logged in";
$('#divPopup').modal({backdrop: 'static',keyboard: false});
setTimeout(function()
{
//Now redirect to URI so that token will be created
clientApplication.loginRedirect(newRequest);

}, 2000);
});
}

The above code is trying to get token silently and if that fails it just forces login using redirect. This will make sure that first time user logs in, it will force token to be created and then it will be stored in local storage.

After this fix, my bot works fine all the time in the external web page. Hope this helps. Do not hesitate to ask any further questions.

[Anonymous]

Hi @Anonymous 

Thanks a lot for responding back..

Yes, I still face issues with SSO. Below is the code that I am using to achieve SSO. I have added the changes that was told by you to my code. I do not want to use the login button since I have already logged into my SharePoint website.

<!DOCTYPE html>
<html>
  <head>
    <title>Virtual Agent</title>
    <script src="https://cdn.botframework.com/botframework-webchat/latest/webchat.js"></script>

    <script
      type="text/javascript"
      src="https://alcdn.msauth.net/lib/1.2.0/js/msal.js"></script>

    <script
      src="https://unpkg.com/@azure/storage-blob@10.3.0/browser/azure-storage.blob.min.js"
      integrity="sha384-fsfhtLyVQo3L3Bh73qgQoRR328xEeXnRGdoi53kjo1uectCfAHFfavrBBN2Nkbdf"
      crossorigin="anonymous"></script>

    <script type="text/javascript">
      if (typeof Msal === "undefined")
        document.write(
          unescape(
            "%3Cscript src='https://alcdn.msftauth.net/lib/1.2.0/js/msal.js' type='text/javascript' %3E%3C/script%3E"
          )
        );
    </script>

    <style>
      html,
      body {
        height: 100%;
      }

      body {
        margin: 0;
      }

      .modal {
        display: none; /* Hidden by default */
        position: fixed; /* Stay in place */
        z-index: 1; /* Sit on top */
        padding-top: 100px; /* Location of the box */
        left: 0;
        top: 0;
        width: 100%; /* Full width */
        height: 100%; /* Full height */
        overflow: auto; /* Enable scroll if needed */
        background-color: rgb(0, 0, 0); /* Fallback color */
        background-color: rgba(0, 0, 0, 0.4); /* Black w/ opacity */
      }

      .modal-content {
        background-color: #fefefe;
        margin: auto;
        padding: 10px;
        border: 1px solid #888;
        width: 500px;
        height: 575px;
      }
      .close {
        color: black;
        float: right;
        font-size: 28px;
        font-weight: bold;
      }

      .close:hover,
      .close:focus {
        color: #000;
        text-decoration: none;
        cursor: pointer;
      }

      .main {
        margin: 18px;
        border-radius: 4px;
      }

      div[role="form"] {
        background-color: #3392ff;
      }

      #webchat {
        position: center;
        height: 530px;
        width: 100%;
        top: 60px;
        overflow: hidden;
      }
      #heading {
        padding-bottom: 5px;
      }

      h1 {
        font-size: 14px;
        font-family: Segoe UI;
        font-style: normal;
        font-weight: 600;
        font-size: 14px;
        line-height: 20px;
        color: #f3f2f1;
        letter-spacing: 0.005em;
        display: table-cell;
        vertical-align: middle;
        padding: 13px 0px 0px 20px;
      }

      #login {
        position: fixed;
        margin-left: 150px;
      }

      .span {
        font-weight: bold;
      }
      #myBtn {
        position: fixed;
        float: right;
        outline: none;
        width: 60px;
        height: 80px;
        margin: auto auto auto 10px;
      }
      button:hover {
        background-color: transparent;
      }
    </style>
  </head>
  <body>

    <button id="myBtn" type="button">Power Virtual Agent</button>

    <button id="login" name="login" onclick="onSignInClick()" style="background-color: aliceblue">Log In</button>

    <div id="myModal" class="modal">

      <div class="modal-content" style="background-color: #ffd933">

        <span class="close">&times;</span>
        <div id="chatwindow">
          <div id="heading">
            <span class="span"><strong>Virtual Agent</strong></span>
            <label id="divUser" name="divUser" style="width: 75%; height: 15px; border-color: Transparent"></label>
            <label id="userName" name="userName" style="width: 75%; height: 15px; border-color: Transparent">Not logged in.</label>
          </div>
          <div id="webchat"></div>
        </div>
      </div>
    </div>

    <script>

      var modal = document.getElementById("myModal");
      var btn = document.getElementById("myBtn");
      var span = document.getElementsByClassName("close")[0];
      btn.onclick = function () {
        modal.style.display = "block";
      };
      span.onclick = function () {
        modal.style.display = "none";
      };
      window.onclick = function (event) {
        if (event.target == modal) {
          modal.style.display = "none";
        }
      };

    </script>

    <script>
      function onSignin(idToken) {
        let user = clientApplication.getAccount();
        alert("User: " + JSON.stringify(user));

        document.getElementById("userName").innerHTML = "Currently logged in as " + user.name;
        let requestObj1 = {
          scopes: ["user.read", "openid", "profile"],
        };
      }

      function onSignInClick() {
        let user = clientApplication.getAccount();
        let requestObj = {
          scopes: ["user.read", "openid", "profile"],
        };

        clientApplication.loginPopup(requestObj).then(onSignin).catch(function (error) {
            console.log("error: " + error);
          });
      }

      function getOAuthCardResourceUri(activity) {
        if (
          activity &&
          activity.attachments &&
          activity.attachments[0] &&
          activity.attachments[0].contentType === "application/vnd.microsoft.card.oauth" &&
          activity.attachments[0].content.tokenExchangeResource)
          {
          return activity.attachments[0].content.tokenExchangeResource.uri;
          }
      }

      function exchangeTokenAsync(resourceUri) {
        let user = clientApplication.getAccount();

        if (user) {
          console.log("User exist " + JSON.stringify(user));

          let requestObj = {
            scopes: [resourceUri],
          };
          console.log("RequestObj: " + JSON.stringify(requestObj));

          return clientApplication.acquireTokenSilent(requestObj).then(function (tokenResponse) {
              console.log("ExchangeTokenAsync requestObj: " + tokenResponse.accessToken);
              return tokenResponse.accessToken;
            })
            .catch(function (error) {
              console.log("ExchangeTokenAsync error: " + error);
            });
        } else {
          return Promise.resolve(null);
        }
      }

      async function fetchJSON(url, options = {}) {
        const res = await fetch(url, {
          ...options,
          headers: {
            ...options.headers,
            accept: "application/json",
          },
        });

        if (!res.ok) {
          throw new Error(`Failed to fetch JSON due to ${res.status}`);
        }

        return await res.json();
      }
    </script>

    <script>
      var clientApplication;

      (function () {
        var msalConfig = {
          auth: {
            clientId: "<Removed Canvas Client ID>",
            authority:"https://login.microsoftonline.com/<Removed Directory ID>",
          },
          cache: {
            cacheLocation: "localStorage",
            storeAuthStateInCookie: false,
          },
        };
        if (!clientApplication) {
          clientApplication = new Msal.UserAgentApplication(msalConfig);

          // I get an error stating "Uncaught ReferenceError: authRedirectCallBack is not defined"
          clientApplication.handleRedirectCallback(authRedirectCallBack);

          //Below code will silently try to get token without popup. If there is no login already exists it will throw exception.
          //As 2nd step, Login will be forced using LoginRedirect method
          var newRequest = {
            scopes: ["user.read", "openid", "profile"],
          };

          clientApplication.acquireTokenSilent(newRequest).then(function (response)
          {
              //Now get the user display name
              let user = clientApplication.getAccount();
              document.getElementById("divUser").style.display = "block";
              document.getElementById("userName").innerHTML = " " + user.name;
          })
          .catch(function (error)
          {
              document.getElementById("divUser").style.display = "block";
              //Now get the user display name
              document.getElementById("userName").innerHTML = "Not Logged in";
              $("#divPopup").modal({ backdrop: "static", keyboard: false });
              setTimeout(function ()
              {
                //Now redirect to URI so that token will be created
                clientApplication.loginRedirect(newRequest);
              }, 2000);
          });
        }
      })();

      (async function main() {

        var BOT_ID = "<Removed BOT ID>";
        var theURL = "https://powerva.microsoft.com/api/botmanagement/v1/directline/directlinetoken?botId=" + BOT_ID;

        var userId = clientApplication.account!=null && clientApplication.account.accountIdentifier != null ? clientApplication.account.accountIdentifier: (Math.random().toString() + Date.now().toString()).substr(0, 64); // Make sure this will not exceed 64 characters

        console.log("Async function main userId: " + userId);

        const { token } = await fetchJSON(theURL);
        const directLine = window.WebChat.createDirectLine({ token });
        const store = WebChat.createStore(
          {},
          ({ dispatch }) => (next) => (action) => {
            const { type } = action;
            if (action.type === "DIRECT_LINE/CONNECT_FULFILLED")
            {

              /*dispatch({
                type: "WEB_CHAT/SEND_EVENT",
                payload: {
                  name: "startConversation",
                  type: "event",
                  value: { text: "hello" },
                },
              });
              return next(action);*/

            }
            if (action.type === "DIRECT_LINE/INCOMING_ACTIVITY")
            {
              const activity = action.payload.activity;
              let resourceUri;
              if (activity.from && activity.from.role === "bot" &&(resourceUri = getOAuthCardResourceUri(activity)))
              {
                exchangeTokenAsync(resourceUri).then(function (token) {
                  if (token) {
                    directLine.postActivity({
                        type: "invoke",
                        name: "signin/tokenExchange",
                        value: {
                          id:activity.attachments[0].content.tokenExchangeResource.id,
                          connectionName:activity.attachments[0].content.connectionName,
                          token,
                        },
                        from: {
                          id: userId,
                          name: clientApplication.account.name,
                          role: "user",
                        },
                      }).subscribe((id) => {

                          console.log("id: " + id);

                          if (id === "retry")
                          {
                            console.log(`Bot was not able to handle the invoke, so display the oauthCard`);
                            return next(action);
                          }
                          console.log(`Else: tokenexchange successful and we do not display the oauthCard`);
                        },
                        (error) => {
                          console.log(`An error occurred to display the oauthCard`);
                          return next(action);
                        }
                      );
                    return;
                  } else return next(action);
                });
              } else return next(action);
            } else return next(action);
          }
        );

        const styleOptions = {
          // Add styleOptions to customize Web Chat canvas
       	 hideUploadButton: true
        };

        window.WebChat.renderWebChat(
          {
            directLine: directLine,
            store,
            userID: userId,
            styleOptions,
          },
          document.getElementById("webchat")
        );
      })().catch((err) => console.error("An error occurred: " + err));
    </script>
  </body>
</html>

I am getting an error stating

"Uncaught ReferenceError: authRedirectCallBack is not defined"  from the below line of code.
clientApplication.handleRedirectCallback(authRedirectCallBack);

So I just created a function

function authRedirectCallBack(error, response) {
if (error) {
console.log(error);
}
}

And I saw my name to be displayed on the label tag on the bot screen as below.

I also see the below error as well

webchat.js:2 POST https://directline.botframework.com/v3/directline/conversations/6EES0CsPuThCYcqw3AK1Cb-6/activities 502

It always entry into the id === "retry" block of code.

if (id === "retry")
{
console.log(`Bot was not able to handle the invoke, so display the oauthCard`);
return next(action);
}

I still get the login box when I start to chat with my bot. 

Can you please help me solve this. Thanks.

[Anonymous]

@Anonymous ,

With this approach, the redirect URL needs to be passed

var msalConfig = 
	{
		auth: 
		{
	    	clientId: '', //Client Id of the AAD Aopp
	   		authority: 'https://login.microsoftonline.com/<TenantId>', //Login
	    	redirectUri: "<SharePoint Page where Bot will be hosted>", //URL that MSAL will redirect to when token is created
	    	navigateToLoginRequestUrl: false //Flag whether to navigate to page if token is not found
		},
	   	cache: 
	   	{
	     cacheLocation: 'localStorage', //Where to store the token information - Local storage
	     storeAuthStateInCookie: false //Whether to store auth information in cookie
	   	}
	};


if (!clientApplication) 
{
		clientApplication = new Msal.UserAgentApplication(msalConfig);
		clientApplication.handleRedirectCallback(authRedirectCallBack);	
}

function authRedirectCallBack(error, response) 
{
    //Do Nothing Here since we don't come back to this page.
    
}

Also make sure to add the redirect url of the SharePoint page where the bot is hosted in AAD App redirect Uri otherwise you will receive a error. 

Also can you check your AAD App settings to make sure the configuration is correct. Make sure to add your redirect uri.

Hope this helps.

[Anonymous]

@Anonymous 

Thank you, I have done the code changes as above. But no luck. I still see the login card.

Below is the code section of MSAL and the main method.

<script>
      var clientApplication;

      (function () {
        var msalConfig =
	       {
		     auth:
		          {
	    	         clientId: '<Have removed the Client ID>', //Client Id of the AAD Aopp
	   		         authority: 'https://login.microsoftonline.com/<Have removed the Directory ID>', //Login
	    	         redirectUri: "https://<org name>.sharepoint.com/sites/testing/MT/project/SitePages/Home.aspx", //URL that MSAL will redirect to when token is created
	    	         navigateToLoginRequestUrl: false //Flag whether to navigate to page if token is not found
		          },
	   	  cache:
	   	        {
	               cacheLocation: 'localStorage', //Where to store the token information - Local storage
	               storeAuthStateInCookie: false //Whether to store auth information in cookie
	   	        }
	       };

             if (!clientApplication)
             {
		             clientApplication = new Msal.UserAgentApplication(msalConfig);
		             clientApplication.handleRedirectCallback(authRedirectCallBack);
             }

      function authRedirectCallBack(error, response)
      {
        //Do Nothing Here since we don't come back to this page.

      }


          //Below code will silently try to get token without popup. If there is no login already exists it will throw exception.
          //As 2nd step, Login will be forced using LoginRedirect method
          var newRequest = {
            scopes: ["user.read", "openid", "profile"],
          };

          clientApplication.acquireTokenSilent(newRequest).then(function (response)
          {
              //Now get the user display name
              let user = clientApplication.getAccount();
              document.getElementById("divUser").style.display = "block";
              document.getElementById("userName").innerHTML = " " + user.name;
          })
          .catch(function (error)
          {
              document.getElementById("divUser").style.display = "block";
              //Now get the user display name
              document.getElementById("userName").innerHTML = "Not Logged in";
              $("#divPopup").modal({ backdrop: "static", keyboard: false });
              setTimeout(function ()
              {
                //Now redirect to URI so that token will be created
                clientApplication.loginRedirect(newRequest);
              }, 2000);
          });
      })();

      (async function main() {

        var BOT_ID = "<Have removed the Bot ID>";
        var theURL = "https://powerva.microsoft.com/api/botmanagement/v1/directline/directlinetoken?botId=" + BOT_ID;

        var userId = clientApplication.account!=null && clientApplication.account.accountIdentifier != null ? clientApplication.account.accountIdentifier: (Math.random().toString() + Date.now().toString()).substr(0, 64); // Make sure this will not exceed 64 characters

        console.log("Async function main userId: " + userId);

        const { token } = await fetchJSON(theURL);
        const directLine = window.WebChat.createDirectLine({ token });
        const store = WebChat.createStore(
          {},
          ({ dispatch }) => (next) => (action) => {
            const { type } = action;
            if (action.type === "DIRECT_LINE/CONNECT_FULFILLED")
            {
              /*
              dispatch({
                type: "WEB_CHAT/SEND_EVENT",
                payload: {
                  name: "startConversation",
                  type: "event",
                  value: { text: "hello" },
                },
              });
              return next(action);
              */
            }
            if (action.type === "DIRECT_LINE/INCOMING_ACTIVITY")
            {
              const activity = action.payload.activity;
              let resourceUri;
              if (activity.from && activity.from.role === "bot" &&(resourceUri = getOAuthCardResourceUri(activity)))
              {
                exchangeTokenAsync(resourceUri).then(function (token) {
                  if (token) {
                    directLine.postActivity({
                        type: "invoke",
                        name: "signin/tokenExchange",
                        value: {
                          id:activity.attachments[0].content.tokenExchangeResource.id,
                          connectionName:activity.attachments[0].content.connectionName,
                          token,
                        },
                        from: {
                          id: userId,
                          name: clientApplication.account.name,
                          role: "user",
                        },
                      }).subscribe((id) => {

                          console.log("id: " + id);

                          if (id === "retry")
                          {
                            console.log(`Bot was not able to handle the invoke, so display the oauthCard`);
                            return next(action);
                          }
                          console.log(`Else: tokenexchange successful and we do not display the oauthCard`);
                        },
                        (error) => {
                          console.log(`An error occurred to display the oauthCard`);
                          return next(action);
                        }
                      );
                    return;
                  } else return next(action);
                });
              } else return next(action);
            } else return next(action);
          }
        );

        const styleOptions = {
          // Add styleOptions to customize Web Chat canvas
       	 hideUploadButton: true
        };

        window.WebChat.renderWebChat(
          {
            directLine: directLine,
            store,
            userID: userId,
            styleOptions,
          },
          document.getElementById("webchat")
        );
      })().catch((err) => console.error("An error occurred: " + err));
    </script>

Below is code section of all functions

  <script>
      function onSignin(idToken) {
        let user = clientApplication.getAccount();
        alert("User: " + JSON.stringify(user));

        document.getElementById("userName").innerHTML = "Currently logged in as " + user.name;
        let requestObj1 = {
          scopes: ["user.read", "openid", "profile"],
        };
      }

      function onSignInClick() {
        let user = clientApplication.getAccount();
        let requestObj = {
          scopes: ["user.read", "openid", "profile"],
        };

        clientApplication.loginPopup(requestObj).then(onSignin).catch(function (error) {
            console.log("error: " + error);
          });
      }

      function getOAuthCardResourceUri(activity) {
        if (
          activity &&
          activity.attachments &&
          activity.attachments[0] &&
          activity.attachments[0].contentType === "application/vnd.microsoft.card.oauth" &&
          activity.attachments[0].content.tokenExchangeResource)
          {
          return activity.attachments[0].content.tokenExchangeResource.uri;
          }
      }

      function exchangeTokenAsync(resourceUri) {
        let user = clientApplication.getAccount();

        if (user) {
          console.log("User exist " + JSON.stringify(user));

          let requestObj = {
            scopes: [resourceUri],
          };
          console.log("RequestObj: " + JSON.stringify(requestObj));

          return clientApplication.acquireTokenSilent(requestObj).then(function (tokenResponse) {
              console.log("ExchangeTokenAsync requestObj: " + tokenResponse.accessToken);
              return tokenResponse.accessToken;
            })
            .catch(function (error) {
              console.log("ExchangeTokenAsync error: " + error);
            });
        } else {
          return Promise.resolve(null);
        }
      }

      async function fetchJSON(url, options = {}) {
        const res = await fetch(url, {
          ...options,
          headers: {
            ...options.headers,
            accept: "application/json",
          },
        });

        if (!res.ok) {
          throw new Error(`Failed to fetch JSON due to ${res.status}`);
        }

        return await res.json();
      }
    </script>

I have added the SharePoint redirect uri in the code and on the AAD app as well.

The SSO configuration in Azure AD are done as per the doc provided by Microsoft.

Azure Canvas/SSO App registration

Azure Authentication App registration

In the console I see the below error

POST https://directline.botframework.com/v3/directline/conversations/52jH6J9MMCFFFk77eFTDHO-f/activities 502

And as the id is "retry" it enters into the if block of (id==='retry') so the login card always shows up.

[Anonymous]

I rally have not seen this error. This certainly means the bot is not able to communicate may be due to token exchange issue. Can you verify your bot token exchange url and make sure it is update in AAD app as well as PVA settings? Also the error 502 means some kind of user error. Can you try to step through the code and put a breakpoint to see what part f the code is failing. As the user tries to talk to bot, the request and response changes. Check that out

[Anonymous]

@Anonymous 

I did try to add break points and try to check which step is failing, But I am not able to figure which step fails from the code, as per the below snapshot I could see my name being passed but the end I still see the login card on by chatbot.

Both the redirect uri on the AAD app registration and on code are same. I have done all the code changes as updated by you. Not sure what is causing this issue. 

[Anonymous]

@Anonymous  The reason why you are seeing your user name is due to MSAL authenticating. I think the issue is with exchangeTokenAsync(). Can you debug into this and see what is happening after receiving the token. Did you check your token exchange Url to match with AAD app? 

[Anonymous]

@Anonymous 

The token exchange Uri that I have added in the PVA Authentication section and the AAD Canvas app both matches.

Please find the below snapshot of exchangeTokenAsync() function code with breakpoint

Below error is what i see on my console as well.

[Anonymous]

Hi @Anonymous 

I was successfully able to achieve SSO. I did the changes on the PVA Authentication section by changing the Service Provider from Generic OAuth 2 to Azure Active Directory V2 which was the main reason for the POST error that I was getting in the console. By doing this and the code changes that you have provided me help me a lot to successfully achieve SSO. Many Thanks.