Getting "invalid_grant" while navigation on SugarCRM

Hi Nuno,

It isn't that much easy to identify this kind of problems. Can you try to disable your custom code to see if that changes this behaviour? 

Best Regards
Tevfik Tümer
Developer Support Engineer

Hi,

I've commented the code I was suspecting and the problem seems to disappear.

I wonder if anyone has a suggestion to solve this issue.

Here is what I do:

• I'm calling oauth2/token with a special API user to obtain a token
• I use this token is every REST call
• There is one place where I need to add a "Call". I need this "Call" to be associated with the user navigating in SugarCRM and not to the "special API user". Therefore, I'm:
  • Calling oauth2/sudo/<navigatingUser> with the oath-token header of the special API user
  • Calling /Calls with the oauth-token header set with the token fetched on the last step.

This seems to ruin my navigation session.

Any hint?

Thanks

Hi Nuno,

I'm not sure about this but sounds like platform issue. 

Can you provide some code block to me? Mostly assumption causes the problems. Especially how you pass the OAuth-token from one to another one. I believe there you are kicking your first user out. 

Best Regards
Tevfik Tümer
Developer Support Engineer

Hi Nuno,

I'm not sure about this but sounds like platform issue. 

Can you provide some code block to me? Mostly assumption causes the problems. Especially how you pass the OAuth-token from one to another one. I believe there you are kicking your first user out. 

Best Regards
Tevfik Tümer
Developer Support Engineer

Hi,

Thanks for replying.

This is my method to perform the "special API user" authentication:

public static string Authenticate(string sugarURL, string clientID = null, string clientSecret = null, string username = null, string password = null)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(sugarURL + "oauth2/token");
            request.Method = "POST";
            request.ContentType = "application/json";

            TokenRequest t = new TokenRequest()
            {
                client_id = clientID,
                client_secret = clientSecret,
                username = username,
                password = password
            };

            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(TokenRequest));
            using (Stream stream = request.GetRequestStream())
            {
                ser.WriteObject(stream, t);
            }

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            using (StreamReader responseString = new StreamReader(response.GetResponseStream()))
            {
                ser = new DataContractJsonSerializer(typeof(TokenResponse));
                TokenResponse r = (TokenResponse)ser.ReadObject(responseString.BaseStream);
                return r.access_token;
            }
        }

This is the method to request the user token. It receives a "otherUsername" which is the user navigating SugarCRM and a "authToken" which was obtained previously by calling "Authenticate".

public static string RequestUserToken(string sugarURL, string otherUsername, string authToken = null, string clientID = null, string clientSecret = null, string username = null, string password = null)
        {
            sugarURL = "https://" + sugarURL + "/rest/v10/";

            if (string.IsNullOrWhiteSpace(authToken))
            {
                authToken = Authenticate(sugarURL, clientID, clientSecret, username, password);
            }

            //Structure need by SugarCRM to make this request
            sugarURL = sugarURL + "oauth2/sudo/" + otherUsername;
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(sugarURL);

            request.Method = "POST";
            request.Headers.Add("oauth-token", authToken);

            TokenRequest t = new TokenRequest()
            {
                client_id = clientID,
                client_secret = clientSecret,
                username = username,
                password = password
            };

            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(TokenRequest));
            using (Stream stream = request.GetRequestStream())
            {
                ser.WriteObject(stream, t);
            }

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            using (StreamReader responseString = new StreamReader(response.GetResponseStream()))
            {
                ser = new DataContractJsonSerializer(typeof(TokenResponse));
                TokenResponse r = (TokenResponse)ser.ReadObject(responseString.BaseStream);
                return r.access_token;
            }
        }

This is the code that adds a call:

public string AddNewCall(string sugarURL, string callName, string dateStart, string direction, string assignedUsername, 
                                String username, String password, String key, String secret, string oauthToken = null, string description = "None", 
                                string status = "Scheduled")
        {
            string addCallResult = DoRequest.Call(
                sugarURL,
                "Calls",
                "POST",
                new Dictionary<string, string>()
                {
                    { "name", callName },
                    {"description", description },
                    {"date_start", dateStart },
                    {"duration_minutes", durationMinutes },
                    {"direction", direction },
                    {"status", status },
                    {"assigned_user_id", assignedUsername }
                },
                oauthToken, key, secret, username, password);

            AddCallResponse response = null;
            using (MemoryStream ms = new MemoryStream(Encoding.Unicode.GetBytes(addCallResult)))
            {
                DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(AddCallResponse));
                response = (AddCallResponse)ser.ReadObject(ms);
            }

            return response.id;
        }

public static string Call(string sugarURL, string url, string method, Dictionary<string, string> arguments, string authToken = null, string clientID = null, string clientSecret = null, string username = null, string password = null)
        {
            sugarURL = "https://" + sugarURL + "/rest/v10/";

            if (string.IsNullOrWhiteSpace(authToken))
            {
                authToken = Authenticate(sugarURL, clientID, clientSecret, username, password);
            }
            
            if (method == "GET")
            {
                string queryParameters = "";
                if (arguments != null)
                {
                    foreach (string key in arguments.Keys)
                    {
                        queryParameters += WebUtility.UrlEncode(key) + "=" + WebUtility.UrlEncode(arguments[key]) + "&";
                    }
                }

                if (!string.IsNullOrWhiteSpace(queryParameters))
                {
                    queryParameters = "?" + queryParameters.Substring(0, queryParameters.Length-1);
                }

                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(sugarURL + url + queryParameters);
                request.Method = "GET";
                request.Headers.Add("oauth-token", authToken);

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                {
                    return reader.ReadToEnd();
                }
            }

            if(method == "POST")
            {
                string queryParameters = "";
                if (arguments != null)
                {
                    foreach (string key in arguments.Keys)
                    {
                        queryParameters += WebUtility.UrlEncode(key) + "=" + WebUtility.UrlEncode(arguments[key]) + "&";
                    }
                }

                if (!string.IsNullOrWhiteSpace(queryParameters))
                {
                    queryParameters = "?" + queryParameters.Substring(0, queryParameters.Length - 1);
                }

                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(sugarURL + url + "/" + queryParameters);

                request.Method = "POST";
                request.Headers.Add("oauth-token", authToken);

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                {
                    return reader.ReadToEnd();
                }
            }

            if (method == "PUT")
            {
                string queryParameters = "";
                if (arguments != null)
                {
                    foreach (string key in arguments.Keys)
                    {
                        queryParameters += WebUtility.UrlEncode(key) + "=" + WebUtility.UrlEncode(arguments[key]) + "&";
                    }
                }

                if (!string.IsNullOrWhiteSpace(queryParameters))
                {
                    queryParameters = "?" + queryParameters.Substring(0, queryParameters.Length - 1);
                }

                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(sugarURL + url + queryParameters);
                request.Method = "PUT";
                request.Headers.Add("oauth-token", authToken);

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                {
                    return reader.ReadToEnd();
                }
            }

            return null;
        }

So, basically I have this:

// key & secret -> OAuth Key 2.0 created in Sugar
// username & password -> Special API user
string oauthToken = DoRequest.Authenticate(sugarREST, key, secret, username, password);
...
...
...
// sugarUsername -> Another user username
// remaining parameters will be ignored
sugarToken = DoRequest.RequestUserToken(SugarURL, sugarUsername, oauthToken, key, secret, username, password);
...
...
...
callID = newCall.AddNewCall(SugarURL, callName, ConstructDateString(DateTime.UtcNow), direction, sugarID, username, password, key, secret, sugarToken, "None", "Scheduled", "0", "None", mediaType);

Do you see anything wrong?

Hi Nuno,

Here is the first question, looking at your

public static string RequestUserToken

Why do you pass your username and password one more time? 

  TokenRequest t = new TokenRequest()
            {
                client_id = clientID,
                client_secret = clientSecret,
                username = username,
                password = password
            };

I think this is causing your user to be kicked out. Take a look at /oauth2/sudo/:user_name POST Endpoint. It expects your user to be an Admin and you don't need to pass the username and password. All you need username as a third parameter( /oauth2/sudo/:username)

Let me know if this helps. 

Best Regards
Tevfik Tümer
Developer Support Engineer

OMG!

I've Code Reviewed this code (I'm not the developer) and I don't know how I've missed this!

It's working!

Thanks a lot Tevfik Tümer!

Hi Nuno,

I'm glad it works now

Best Regards
Tevfik Tümer
Developer Support Engineer

After all the problem remains

Hi Nuno,

Even after changing the code? 

I don't have any environment for you to check this code. 

If it would be php, i would check here in my local machine. 

I will take a look at this later on one more time. See if i can catch another problem. 

Best Regards
Tevfik Tümer
Developer Support Engineer

Here is the answer:

https://developer.sugarcrm.com/2014/06/20/how-to-avoid-logging-out-a-user-when-using-their-credentials-via-the-new-rest-… 

.

Hi Nuno,

I'm glad that you figured that out  I actually mentioned that in one of my posts here as well.

Best Regards
Tevfik Tümer
Developer Support Engineer