private async Task <LinkedInExternalAccessToken> VerifyExternalAccessToken(string accessToken, string logFile, bool writeLog)
{
_linkedInAuthClient = this._authenticationRepository.GetDbContext().LinkedInAuthClients.Where(_linked => _linked.Active).SingleOrDefault();
LinkedInExternalAccessToken parsedToken = null;
string file = logFile;
try
{
string verifyTokenEndPoint = "";
verifyTokenEndPoint = "https://www.linkedin.com/oauth/v2/accessToken";
string redirectURl = string.Format("{0}/LinkedInMVC/AuthCallBack", System.Configuration.ConfigurationManager.AppSettings["WebSiteUrl"].ToString());
HttpResponseMessage response;
Uri uri = new Uri(verifyTokenEndPoint);
if (writeLog)
{
System.IO.File.AppendAllText(file, Environment.NewLine + System.DateTime.Now.ToString() + "| start verify linked access token...");
}
using (HttpClient httpClient = new HttpClient())
{
httpClient.DefaultRequestHeaders.Host = "www.linkedin.com";
var content = new FormUrlEncodedContent(new[]
{
new KeyValuePair <string, string>("grant_type", "authorization_code"),
new KeyValuePair <string, string>("code", accessToken),
new KeyValuePair <string, string>("redirect_uri", redirectURl),
new KeyValuePair <string, string>("client_id", _linkedInAuthClient.ClientId),
new KeyValuePair <string, string>("client_secret", _linkedInAuthClient.ClientSecret),
});
content.Headers.ContentType.MediaType = "application/x-www-form-urlencoded";
response = await httpClient.PostAsync(uri, content);
}
if (response.IsSuccessStatusCode)
{
string content = await response.Content.ReadAsStringAsync();
dynamic jObj = (JObject)Newtonsoft.Json.JsonConvert.DeserializeObject(content);
parsedToken = new LinkedInExternalAccessToken();
parsedToken.access_token = jObj["access_token"];
parsedToken.expiry_in = jObj["expires_in"];
}
}
catch (Exception ex)
{
if (writeLog)
{
System.IO.File.AppendAllText(file, Environment.NewLine + System.DateTime.Now.ToString() + "| Exception during verify linked access token " + ex.ToString());
}
}
return(parsedToken);
}
public async Task <ActionResult> AuthCallBack(string code, string state)
{
string rootPath = "";
bool writeLog = false;
if (System.Configuration.ConfigurationManager.AppSettings["DebugLogFile"] != null)
{
if (string.IsNullOrEmpty(System.Configuration.ConfigurationManager.AppSettings["DebugLogFile"].ToString()) == false)
{
rootPath = System.Configuration.ConfigurationManager.AppSettings["DebugLogFile"].ToString();
writeLog = true;
}
}
string file = rootPath + System.DateTime.Now.ToString("yyyyMMddhhmm") + "LNK_AuthCallBack.txt";
_linkedInAuthClient = this._authenticationRepository.GetDbContext().LinkedInAuthClients.Where(_linked => _linked.Active).SingleOrDefault();
if (Session["LinkedInState"] != null)
{
if (writeLog)
{
System.IO.File.AppendAllText(file, System.DateTime.Now.ToString() + " Start Callback Linked Process...");
}
string stateOriginal = Session["LinkedInState"].ToString();
if (stateOriginal == state)
{
LinkedInExternalAccessToken verifiedAccessToken = await VerifyExternalAccessToken(code, file, writeLog);
if (verifiedAccessToken == null)
{
if (writeLog)
{
System.IO.File.AppendAllText(file, Environment.NewLine + System.DateTime.Now.ToString() + " Linked In External Access Token not found");
}
return(Content("Error in validating response. Please close window and try again."));
}
else
{
if (writeLog)
{
System.IO.File.AppendAllText(file, Environment.NewLine + System.DateTime.Now.ToString() + " start to read profile from linkedin...");
}
}
if (verifiedAccessToken != null)
{
LinkedProfile profileInfo = await GetProfileInfo(verifiedAccessToken.access_token, file, writeLog);
if (profileInfo != null)
{
User user = await this._authenticationRepository.FindAsync(new UserLoginInfo("linkedin", profileInfo.id));
bool hasRegistered = user != null;
if (hasRegistered == false)
{
if (writeLog)
{
System.IO.File.AppendAllText(file, System.Environment.NewLine + System.DateTime.Now.ToString() + " local account is NOT FOUND for given linked in provider key...");
}
}
else
{
if (writeLog)
{
System.IO.File.AppendAllText(file, System.Environment.NewLine + System.DateTime.Now.ToString() + " local account FOUND for given linked in provider key...");
}
}
ViewBag.Result = true;
ViewBag.ErrorMessage = "";
ViewBag.haslocalaccount = hasRegistered.ToString();
ViewBag.Id = profileInfo.id;
ViewBag.Token = verifiedAccessToken.access_token;
return(View());
}
}
}
else
{
ViewBag.Result = false;
ViewBag.ErrorMessage = "Invalid state for linkedin response. Please close window and try again to login.";
return(View());
}
}
ViewBag.Result = false;
ViewBag.ErrorMessage = "Error during validating response. Please close window and try again to login.";
return(View());
}
