public async Task Invoke(HttpContext context)
{
try
{
context.Response.ContentType = "text/html";
var requestHost = context.Request.Headers["Referer"];
if (string.IsNullOrEmpty(requestHost))
{
await context.Response.WriteAsync("No Iframe! Don't Cheat!");
return;
}
string host = new Uri(requestHost).Authority.ToString();
var topdomain = "";
if (host.IndexOf(".") == host.LastIndexOf("."))
{
topdomain = host;
}
else
{
topdomain = host.Substring(host.IndexOf(".") + 1);
}
var hostData = await _hostCache.GetHostAsync(topdomain);
if (hostData == null)
{
return;
}
string userCookie = context.Request.Cookies[_configuration.CookieName];
//try
//{
// var logAgent= _redisCache.GetDatabase(DataAccess.RedisDatabases.CacheData).StringGet("LogAgent");
// if (logAgent.HasValue)
// {
// var userAgent = context.Request.Headers["User-Agent"].ToString();
// var agentstring = string.IsNullOrEmpty(userAgent.ToString()) ? "unknown" : userAgent.ToString();
// var agentDb = _redisCache.GetDatabase(DataAccess.RedisDatabases.Logs);
// await agentDb.HashIncrementAsync("AgentCounter",agentstring);
// }
//}
//catch
//{
//}
long userId = 0;
if (userCookie == null)
{
userId = await _userIdSetter.GetNewUserIdAsync();
var co = new CookieOptions()
{
Expires = DateTime.Now.AddYears(5),
SameSite = SameSiteMode.None
};
if (_configuration.CookieDomain != ".")
{
co.Domain = _configuration.CookieDomain;
}
context.Response.Cookies.Append(_configuration.CookieName, userId.ToString(), co);
}
else
{
var resultofparseCookie = long.TryParse(userCookie, out userId);
if (!resultofparseCookie)
{
return;
}
}
if (await _crowlerCache.IsCrowler(userId))
{
return;
}
var rawhtml = "<!DOCTYPE html><html><head><meta charset=\"utf-8\" /><title></title></head><body>partner_iframes<script>var sendingData = {};sendingData.message = \"GetCookie\";sendingData.UserId = user_identity;sendingData.FinalizePage = 'finalize_page';sendingData.HostId = host_identity;sendingData.AddToCart = 'add_to_cart';parent.postMessage(JSON.stringify(sendingData), \"*\");</script></body></html>";
var html = rawhtml.Replace("user_identity", userId.ToString()).Replace("host_identity", hostData.Id.ToString()).Replace("add_to_cart", hostData.AddToCardId).Replace("finalize_page", hostData.FinalizePage);
var partners = await _partnerCache.ListAsync();
var pixelHtml = "";
foreach (var item in partners)
{
if (!string.IsNullOrEmpty(item.CookieSyncAddress))
{
var partnerAddress = item.CookieSyncAddress?.Replace("@StickyId", userId.ToString());
pixelHtml += "<iframe src=\"" + partnerAddress + "\"></iframe>";
}
}
html = html.Replace("partner_iframes", pixelHtml);
await context.Response.WriteAsync(html);
}
catch (Exception ex)
{
await _errorLogger.LogError(ex.Message);
}
}
