index.aspx.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Web.Services;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;
using ADAM.CernerFHIR.Client;
using ADAM.CernerFHIR.Helper;
using ADAM.CernerFHIR.Model;
using AIAHTML5.API.Models;
using eLearningPlayer;
using eLearningPlayer.model;
using HtmlAgilityPack;
namespace ADAM.AIA
{
public partial class index : System.Web.UI.Page
{
public string strIPAddress = "";
public bool bValidIP = false;
public string strAccountNumber = "";
public string strEdition = "";
public string strUrlReferer = "";
public string strSiteReferer = "";
public string urlParams = "";
public string test = "";
public bool isCalsCredantial = false;
public string cernerEndPointURL = "";
public string cernerLaunch = "";
public string cernerCode = "";
public string cernerState = "";
public string CernerDocumentId = "";
protected void Page_Load(object sender, EventArgs e)
{
SetQueryStringCerner();
if (Request.HttpMethod == "POST")
{
if (Request.Form["calsCredantial"] != null && Request.Form["calsCredantial"].ToString() == "yes")
{
isCalsCredantial = true;
urlParams = "calsCredantial=" + Request.Form["calsCredantial"].ToString() + "&username=" + Request.Form["calsUsername"].ToString() + "&password=" + Request.Form["calsPassword"].ToString();
//calsCredantialusername&password
// urlParams = Request.Form["calsCredantial"].ToString() + "&username=" + Request.Form["calsUsername"].ToString() + "&password=" + Request.Form["calsPassword"].ToString();
}
}
else
{
if (null != cernerEndPointURL && cernerEndPointURL != "")
{
if (null != cernerCode && cernerCode == "")
{
//var urlRedirect = AsyncToSyncTaskHelper.AsyncHelpers.RunSync<string>(() => ResourceProcessor.CernerConfiguration(cernerEndPointURL, "auth", true));
//var urlRedirect = Task.Factory.StartNew<Task<string>>(async () => await ResourceProcessor.CernerConfiguration(baseUrlFHIR, "auth", true));
var AsyncTask = Task.Run(async () => await ResourceProcessor.CernerConfiguration(cernerEndPointURL, "auth", true));
var AuthorizationUriRedirect = AsyncTask.Result;
if (null != CernerDocumentId && CernerDocumentId != "")
Response.Redirect(AuthorizationUriRedirect + "&launch=" + cernerLaunch + "&documentId=" + CernerDocumentId, true);
else
Response.Redirect(AuthorizationUriRedirect + "&launch=" + cernerLaunch, true);
}
else
{
if (null != CernerDocumentId && CernerDocumentId != "")
{
Uri url = new Uri(Request.Url.PathAndQuery, UriKind.Relative);
var values = new { documentId = CernerDocumentId };
var result = url.ExtendQuery(values);
//Assert.That(result, Is.EqualTo(new Uri("/test?param1=new-value¶m2=val2", UriKind.Relative)));
//HttpContext.Current.Request.QueryString.Add("documetId", CernerDocumentId);
//AddParameter(Request.Url, "documetId", CernerDocumentId);
//Response.Redirect(result.OriginalString, false);
}
ApiHelper.InitializeClient();// Initialize FHIR Client.
RegisterAsyncTask(new PageAsyncTask(() => ProcessCernerResourceAsync(cernerEndPointURL, cernerCode)));// Process FHIR Resource.
}
}
else if(null != CernerDocumentId && CernerDocumentId != "")
{
//AddParameter(Request.Url, "documetId", CernerDocumentId);
//ApiHelper.InitializeClient();// Initialize FHIR Client if required.
//RegisterAsyncTask(new PageAsyncTask(() => ProcessCernerDocumentResourceAsync(cernerEndPointURL, CernerDocumentId)));// Process FHIR Resource.
//Response.Write("Loading... to previous state DA !!");
}
else
{
//SetCookiesCerner(false,"");
}
}
if (Request.QueryString["mtype"] != null)
{
//birendra
//open default CA module by query string
isCalsCredantial = true;
string[] allQueryData = new string[Request.QueryString.AllKeys.Length];
for(int i=0;i< Request.QueryString.AllKeys.Length; i++)
{
allQueryData[i] = Request.QueryString.AllKeys[i] + "=" + Request.QueryString[Request.QueryString.AllKeys[i]].ToString();
}
urlParams = string.Join("&", allQueryData);
//urlParams = "mtype=" + Request.QueryString[allQueryData[].ToString() + "&id=" + Request.QueryString["id"].ToString() + "&username=" + Request.QueryString["username"].ToString() + "&password=" + Request.QueryString["password"].ToString();
}
else if (Request.QueryString["account"] != null)
{
// http://stackoverflow.com/questions/9032005/request-servervariableshttp-referer-is-not-working-in-ie
// http://stackoverflow.com/questions/5643773/http-referrer-not-always-being-passed?rq=1
//
strSiteReferer = Request.ServerVariables["HTTP_REFERER"];
strAccountNumber = Request.QueryString["account"];
strEdition = Request.QueryString["edition"];
string remoteIPAddress = Request.ServerVariables["REMOTE_ADDR"];
string strHttpReferer = null;
int intSiteId = 0;
if (Request.Form["referer"] != null)
{
strUrlReferer = Request.Form["referer"];
}
else if (Request.QueryString["referer"] == null)
{
strUrlReferer = Request.ServerVariables["HTTP_REFERER"];
}
else if (Request.Params["referer"] != null)
{
strUrlReferer = Request.Params["referer"];
}
else
{
strUrlReferer = Request.QueryString["referer"];
}
if (strUrlReferer != "" && strUrlReferer != null)
{
strHttpReferer = strUrlReferer.ToLower().Replace("http://", "").Replace("https://", "").Replace("www.", "").ToString().Split('/')[0].ToString();
if (strHttpReferer.IndexOf(":") != -1)
{
char[] delimiters = new char[] { ':' };
string[] parts = strHttpReferer.Split(delimiters, StringSplitOptions.RemoveEmptyEntries);
strHttpReferer = parts[0];
}
}
try
{
if (strHttpReferer != "" && strHttpReferer != null)
strIPAddress = strHttpReferer;
if (strIPAddress == "" || strIPAddress == null)
strIPAddress = remoteIPAddress;
// intSiteId = LicenseHelper.GetInstance().ValidateLicenseSiteIP(strIPAddress, remoteIPAddress, strAccountNumber, Convert.ToByte(strEdition));
}
catch (Exception objEx)
{
}
//urlParams = "?siteIP=" + strIPAddress + "&status=" + intSiteId + "&accountNumber=" + strAccountNumber + "&edition=" + strEdition + "&urlReferer=" + (strSiteReferer != "" && strSiteReferer != null ? strSiteReferer : "");
urlParams = "siteIP=" + strIPAddress + "&accountNumber=" + strAccountNumber + "&edition=" + strEdition + "&urlReferer=" + (strSiteReferer != "" && strSiteReferer != null ? strSiteReferer : "") + "&remoteIPAddress=" + remoteIPAddress;
//For the ease of splitting desgined urlParms in the pattern of
//urlParams = siteIP&accountNumber&remoteIPAddress&edition&urlReferer; without mentioning the variableName
// urlParams = strIPAddress + "&" + remoteIPAddress+"&"+ strAccountNumber + "&" + strEdition + "&" + (strSiteReferer != "" && strSiteReferer != null ? strSiteReferer : "");
}
}
#region Cerner FHIR Resource
private void SetCookiesCerner(bool IsCernerUser, string CernerSessionId)
{
var cookieData = new
{
isCernerUser = IsCernerUser,
CernerSessionId
};
string myObjectJson = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(cookieData);
//Set Cerner Cookies.
var cernerCookies = new HttpCookie("CernerInfo")
{
HttpOnly = false,
Value = myObjectJson,
Path = "/",
SameSite = SameSiteMode.Lax,
Expires = DateTime.Now.AddMinutes(Session.Timeout)
};
Response.Cookies.Add(cernerCookies);
}
private void SetQueryStringCerner()
{
if (Request.QueryString["iss"] != null)
cernerEndPointURL = Request.QueryString["iss"];//https://fhir-ehr.sandboxcerner.com/dstu2/0b8a0111-e8e6-4c26-a91c-5069cbc6b1ca;
if (Request.QueryString["launch"] != null)
cernerLaunch = Request.QueryString["launch"];
if (Request.QueryString["code"] != null)
cernerCode = Request.QueryString["code"];
if (Request.QueryString["state"] != null)
cernerState = Request.QueryString["state"];
if (Request.QueryString["documentId"] != null)
CernerDocumentId = Request.QueryString["documentId"];
//Session store
if (cernerEndPointURL != "" && (cernerLaunch != "" || cernerCode != ""))
Session["iss"] = cernerEndPointURL;
//Retreive session
if (Session["iss"] != null && (cernerLaunch != "" || cernerCode != ""))
cernerEndPointURL = Session["iss"].ToString();
//Session store documetId
if(cernerEndPointURL != "" && cernerLaunch != "" && CernerDocumentId != "")
Session["documetId"] = CernerDocumentId;
//Retreive session
if (Session["documetId"] != null && (cernerLaunch != "" || cernerCode != ""))
CernerDocumentId = Session["documetId"].ToString();
//If any error occurs from cerner
if (Request.QueryString["error"] != null)
{
var error_uri = Request.QueryString["error_uri"].ToString();
var url = new Uri(error_uri);
Response.Redirect(url.AbsoluteUri, true);
}
}
private string GenerateSessionId()
{
if (HttpContext.Current.Request.Cookies["CernerInfo"] == null) return Session.SessionID;
var Cernercookie = HttpContext.Current.Request.Cookies["CernerInfo"].Value;
var jsonData = Newtonsoft.Json.Linq.JObject.Parse(Cernercookie);
var cernerCode = jsonData.Value<string>("CernerSessionId");
if (cernerCode == Session["sessionId"]?.ToString()) return cernerCode;
return Session.SessionID;
}
private async Task ProcessCernerResourceAsync(string cernerEndPointURL, string cernerCode)
{
var token = new LoginResult();
var cernerInfoJWT = new CernerInfoJWT();
var sessionId = GenerateSessionId();
if (Session["CernerToken"] == null)
{
// Get the Token from Authentication Server.
token = await ResourceProcessor.GetCernerResourceToken(cernerEndPointURL, cernerCode);
token.EndPointURL = cernerEndPointURL;
cernerInfoJWT = await ResourceProcessor.ProcessJwtString(token);
Session["CernerToken"] = token;
Session["CernerInfoJWT"] = cernerInfoJWT;
Session["Code"] = cernerCode; // set first time launch code.
Session["sessionId"] = sessionId;
await CernerUserSession(sessionId, token, cernerInfoJWT, cernerCode);
}
else
{
if (cernerCode == Session["Code"]?.ToString())
{
token = (LoginResult)Session["CernerToken"];
cernerInfoJWT = (CernerInfoJWT)Session["cernerInfoJWT"];
}
else
{
token = await ResourceProcessor.GetCernerResourceToken(cernerEndPointURL, cernerCode);
cernerInfoJWT = await ResourceProcessor.ProcessJwtString(token);
Session["CernerToken"] = token;
Session["CernerInfoJWT"] = cernerInfoJWT;
Session["Code"] = cernerCode; // New launch code.
await CernerUserSession(sessionId, token, cernerInfoJWT, cernerCode);
}
}
SetCookiesCerner(true, sessionId);
}
private async Task SaveCernerUserSessionInfo(CernerUserSessionInfo cernerUserSessionInfo)
{
var AIA_API_URL = System.Configuration.ConfigurationManager.AppSettings["AIAAPIURL"];
using (var client = new HttpClient())
{
client.BaseAddress = new Uri(AIA_API_URL);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
string cernerUserSessionInfoJson = Newtonsoft.Json.JsonConvert.SerializeObject(cernerUserSessionInfo);
//POST Method
HttpResponseMessage response = await client.PostAsJsonAsync("api/CernerUserSession", cernerUserSessionInfoJson);
if (response.IsSuccessStatusCode)
{
// Get the URI of the created resource.
Uri returnUrl = response.Headers.Location;
}
}
}
private async Task ProcessCernerDocumentResourceAsync(string cernerEndPointURL, string documentId)
{
//var result = await Task.Run(async () => await SaveCernerUserSessionInfo(documentId));
var AIA_API_URL = System.Configuration.ConfigurationManager.AppSettings["AIAAPIURL"];
using (var client = new HttpClient())
{
client.BaseAddress = new Uri(AIA_API_URL);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
//string cernerUserSessionInfoJson = Newtonsoft.Json.JsonConvert.SerializeObject(cernerUserSessionInfo);
//POST Method
HttpResponseMessage response = await client.GetAsync("api/CernerUserSession/" + documentId);
var receiveStream = await response.Content.ReadAsStringAsync();
//StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
var cernerUserSessionInfo = Newtonsoft.Json.JsonConvert.DeserializeObject<CernerUserImageAIA>(receiveStream);
if (response.IsSuccessStatusCode)
{
// Get the URI of the created resource.
Uri returnUrl = response.Headers.Location;
var result = response.Content;
}
}
}
private async Task CernerUserSession(string sessionId, LoginResult token, CernerInfoJWT cernerInfoJWT, string cernerCode)
{
//Create object and save to AIA DB
var cernerUserSessionInfo = new CernerUserSessionInfo()
{
FhirUserSessionId = sessionId,
LoginResult = token,
CernerInfoJWT = cernerInfoJWT,
CernerCode = cernerCode
};
//Call API.
await Task.Run(async () => await SaveCernerUserSessionInfo(cernerUserSessionInfo));
}
//public static Uri AddParameter(this Uri url, string paramName, string paramValue)
//{
// var uriBuilder = new UriBuilder(url);
// var query = HttpUtility.ParseQueryString(uriBuilder.Query);
// query[paramName] = paramValue;
// uriBuilder.Query = query.ToString();
// return uriBuilder.Uri;
//}
#endregion
}
}