Example #1
0
        static void UrlTrackerDo(string callingEventName, bool ignoreHttpStatusCode = false)
        {
            HttpContext  context  = HttpContext.Current;
            HttpRequest  request  = context.Request;
            HttpResponse response = context.Response;

            if (!string.IsNullOrEmpty(request.QueryString[UrlTrackerSettings.HttpModuleCheck]))
            {
                response.Clear();
                response.Write(UrlTrackerSettings.HttpModuleCheck);
                response.StatusCode = 200;
                response.End();
                return;
            }

            LoggingHelper.LogInformation("UrlTracker HttpModule | {0} start", callingEventName);

            if (UrlTrackerSettings.IsDisabled)
            {
                LoggingHelper.LogInformation("UrlTracker HttpModule | UrlTracker is disabled by config");
                return;
            }

            string url = request.RawUrl;

            if (url.StartsWith("/") && url != "/")
            {
                url = url.Substring(1);
            }

            LoggingHelper.LogInformation("UrlTracker HttpModule | Incoming URL is: {0}", url);

            if (_urlTrackerInstalled && (response.StatusCode == (int)HttpStatusCode.NotFound || ignoreHttpStatusCode))
            {
                if (response.StatusCode == (int)HttpStatusCode.NotFound)
                {
                    LoggingHelper.LogInformation("UrlTracker HttpModule | Response statusCode is 404, continue URL matching");
                }
                else
                {
                    LoggingHelper.LogInformation("UrlTracker HttpModule | Checking for forced redirects (AcquireRequestState), continue URL matching");
                }

                string urlWithoutQueryString = url;
                if (InfoCaster.Umbraco.UrlTracker.Helpers.UmbracoHelper.IsReservedPathOrUrl(url))
                {
                    LoggingHelper.LogInformation("UrlTracker HttpModule | URL is an umbraco reserved path or url, ignore request");
                    return;
                }

                //bool urlHasQueryString = request.QueryString.HasKeys() && url.Contains('?');
                bool urlHasQueryString = url.Contains('?'); // invalid querystring (?xxx) without = sign must also be stripped...

                if (urlHasQueryString)
                {
                    urlWithoutQueryString = url.Substring(0, url.IndexOf('?'));
                }

                string shortestUrl = UrlTrackerHelper.ResolveShortestUrl(urlWithoutQueryString);

                int rootNodeId = -1;
                List <UrlTrackerDomain> domains = UmbracoHelper.GetDomains();
                if (domains.Any())
                {
                    string fullRawUrl;
                    string previousFullRawUrlTest;
                    string fullRawUrlTest;
                    fullRawUrl = previousFullRawUrlTest = fullRawUrlTest = string.Format("{0}{1}{2}{3}", request.Url.Scheme, Uri.SchemeDelimiter, request.Url.Host, request.RawUrl);

                    UrlTrackerDomain urlTrackerDomain;
                    do
                    {
                        if (previousFullRawUrlTest.EndsWith("/"))
                        {
                            urlTrackerDomain = domains.FirstOrDefault(x => (x.UrlWithDomain == fullRawUrlTest) || (x.UrlWithDomain == fullRawUrlTest + "/"));
                            if (urlTrackerDomain != null)
                            {
                                rootNodeId            = urlTrackerDomain.NodeId;
                                urlWithoutQueryString = fullRawUrl.Replace(fullRawUrlTest, string.Empty);
                                if (urlWithoutQueryString.StartsWith("/"))
                                {
                                    urlWithoutQueryString = urlWithoutQueryString.Substring(1);
                                }
                                if (urlWithoutQueryString.EndsWith("/"))
                                {
                                    urlWithoutQueryString = urlWithoutQueryString.Substring(0, urlWithoutQueryString.Length - 1);
                                }

                                break;
                            }
                        }
                        previousFullRawUrlTest = fullRawUrlTest;
                        fullRawUrlTest         = fullRawUrlTest.Substring(0, fullRawUrlTest.Length - 1);
                    }while (fullRawUrlTest.Length > 0);
                }
                if (rootNodeId == -1)
                {
                    List <INode> children = new Node(rootNodeId).ChildrenAsList;
                    if (children != null && children.Any())
                    {
                        rootNodeId = children.First().Id;
                    }
                }
                else
                {
                    var rootUrl = "/";
                    try
                    {
                        rootUrl = new Node(rootNodeId).Url;
                    }
                    catch (ArgumentNullException)
                    {
                        // could not get full url for path, so we keep / as the root... (no other way to check, happens for favicon.ico for example)
                    }
                    var rootFolder = rootUrl != @"/" ? new Uri(HttpContext.Current.Request.Url, rootUrl).AbsolutePath.TrimStart('/') : string.Empty;
                    if (shortestUrl.StartsWith(rootFolder, StringComparison.OrdinalIgnoreCase))
                    {
                        shortestUrl = shortestUrl.Substring(rootFolder.Length);
                    }
                }
                LoggingHelper.LogInformation("UrlTracker HttpModule | Current request's rootNodeId: {0}", rootNodeId);

                string redirectUrl      = null;
                int?   redirectHttpCode = null;
                bool   redirectPassThroughQueryString = true;

                if (!ignoreHttpStatusCode)
                {
                    // Normal matching (database)
                    LoadUrlTrackerMatchesFromDatabase(request, urlWithoutQueryString, urlHasQueryString, shortestUrl, rootNodeId, ref redirectUrl, ref redirectHttpCode, ref redirectPassThroughQueryString);
                }
                else
                {
                    // Forced matching (cache)
                    LoadUrlTrackerMatchesFromCache(request, urlWithoutQueryString, urlHasQueryString, shortestUrl, rootNodeId, ref redirectUrl, ref redirectHttpCode, ref redirectPassThroughQueryString);
                }

                string query;
                if (!redirectHttpCode.HasValue)
                {
                    if (!ignoreHttpStatusCode)
                    {
                        // Normal matching (database)
                        // Regex matching
                        query = "SELECT * FROM icUrlTracker WHERE Is404 = 0 AND ForceRedirect = @forceRedirect AND (RedirectRootNodeId = @redirectRootNodeId OR RedirectRootNodeId = -1) AND OldRegex IS NOT NULL ORDER BY Inserted DESC";
                        using (IRecordsReader reader = _sqlHelper.ExecuteReader(query, _sqlHelper.CreateParameter("forceRedirect", ignoreHttpStatusCode ? 1 : 0), _sqlHelper.CreateParameter("redirectRootNodeId", rootNodeId)))
                        {
                            Regex regex;
                            while (reader.Read())
                            {
                                regex = new Regex(reader.GetString("OldRegex"));
                                if (regex.IsMatch(url))
                                {
                                    LoggingHelper.LogInformation("UrlTracker HttpModule | Regex match found");
                                    if (!reader.IsNull("RedirectNodeId"))
                                    {
                                        int redirectNodeId = reader.GetInt("RedirectNodeId");
                                        LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect node id: {0}", redirectNodeId);
                                        Node n = new Node(redirectNodeId);
                                        if (n != null && n.Name != null && n.Id > 0)
                                        {
                                            redirectUrl = UmbracoHelper.GetUrl(redirectNodeId);
                                            LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url set to: {0}", redirectUrl);
                                        }
                                        else
                                        {
                                            LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect node is invalid; node is null, name is null or id <= 0");
                                        }
                                    }
                                    else if (!reader.IsNull("RedirectUrl"))
                                    {
                                        redirectUrl = reader.GetString("RedirectUrl");
                                        LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url set to: {0}", redirectUrl);

                                        if (_capturingGroupsRegex.IsMatch(redirectUrl))
                                        {
                                            LoggingHelper.LogInformation("UrlTracker HttpModule | Found regex capturing groups in the redirect url");
                                            redirectUrl = regex.Replace(url, redirectUrl);

                                            LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url changed to: {0} (because of regex capturing groups)", redirectUrl);
                                        }
                                    }

                                    redirectPassThroughQueryString = reader.GetBoolean("RedirectPassThroughQueryString");
                                    LoggingHelper.LogInformation("UrlTracker HttpModule | PassThroughQueryString is enabled");

                                    redirectHttpCode = reader.GetInt("RedirectHttpCode");
                                    LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect http code set to: {0}", redirectHttpCode);
                                }
                            }
                        }
                    }
                    else
                    {
                        // Forced matching (cache)
                        List <UrlTrackerModel> forcedRedirects = UrlTrackerRepository.GetForcedRedirects().Where(x => !string.IsNullOrEmpty(x.OldRegex)).ToList();
                        if (forcedRedirects == null || !forcedRedirects.Any())
                        {
                            return;
                        }

                        foreach (var match in forcedRedirects.Select(x => new { UrlTrackerModel = x, Regex = new Regex(x.OldRegex) }).Where(x => x.Regex.IsMatch(url)))
                        {
                            LoggingHelper.LogInformation("UrlTracker HttpModule | Regex match found");
                            if (match.UrlTrackerModel.RedirectNodeId.HasValue)
                            {
                                LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect node id: {0}", match.UrlTrackerModel.RedirectNodeId.Value);
                                Node n = new Node(match.UrlTrackerModel.RedirectNodeId.Value);
                                if (n != null && n.Name != null && n.Id > 0)
                                {
                                    redirectUrl = UmbracoHelper.GetUrl(match.UrlTrackerModel.RedirectNodeId.Value);
                                    LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url set to: {0}", redirectUrl);
                                }
                                else
                                {
                                    LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect node is invalid; node is null, name is null or id <= 0");
                                }
                            }
                            else if (!string.IsNullOrEmpty(match.UrlTrackerModel.RedirectUrl))
                            {
                                redirectUrl = match.UrlTrackerModel.RedirectUrl;
                                LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url set to: {0}", redirectUrl);

                                if (_capturingGroupsRegex.IsMatch(redirectUrl))
                                {
                                    LoggingHelper.LogInformation("UrlTracker HttpModule | Found regex capturing groups in the redirect url");
                                    redirectUrl = match.Regex.Replace(url, redirectUrl);

                                    LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url changed to: {0} (because of regex capturing groups)", redirectUrl);
                                }
                            }

                            redirectPassThroughQueryString = match.UrlTrackerModel.RedirectPassThroughQueryString;
                            LoggingHelper.LogInformation("UrlTracker HttpModule | PassThroughQueryString is enabled");

                            redirectHttpCode = match.UrlTrackerModel.RedirectHttpCode;
                            LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect http code set to: {0}", redirectHttpCode);
                        }
                    }
                }

                if (redirectHttpCode.HasValue)
                {
                    string redirectLocation = string.Empty;

                    if (!string.IsNullOrEmpty(redirectUrl))
                    {
                        if (redirectUrl == "/")
                        {
                            redirectUrl = string.Empty;
                        }
                        Uri redirectUri = new Uri(redirectUrl.StartsWith(Uri.UriSchemeHttp, StringComparison.OrdinalIgnoreCase) ? redirectUrl : string.Format("{0}{1}{2}{3}/{4}", request.Url.Scheme, Uri.SchemeDelimiter, request.Url.Host, request.Url.Port != 80 && UrlTrackerSettings.AppendPortNumber ? string.Concat(":", request.Url.Port) : string.Empty, redirectUrl.StartsWith("/") ? redirectUrl.Substring(1) : redirectUrl));
                        if (redirectPassThroughQueryString)
                        {
                            NameValueCollection redirectQueryString = HttpUtility.ParseQueryString(redirectUri.Query);
                            NameValueCollection newQueryString      = HttpUtility.ParseQueryString(request.Url.Query);
                            if (redirectQueryString.HasKeys())
                            {
                                newQueryString = newQueryString.Merge(redirectQueryString);
                            }
                            string pathAndQuery = Uri.UnescapeDataString(redirectUri.PathAndQuery) + redirectUri.Fragment;
                            redirectUri = new Uri(string.Format("{0}{1}{2}{3}/{4}{5}", redirectUri.Scheme, Uri.SchemeDelimiter, redirectUri.Host, redirectUri.Port != 80 && UrlTrackerSettings.AppendPortNumber ? string.Concat(":", redirectUri.Port) : string.Empty, pathAndQuery.Contains('?') ? pathAndQuery.Substring(0, pathAndQuery.IndexOf('?')) : pathAndQuery.StartsWith("/") ? pathAndQuery.Substring(1) : pathAndQuery, newQueryString.HasKeys() ? string.Concat("?", newQueryString.ToQueryString()) : string.Empty));
                        }

                        if (redirectUri == new Uri(string.Format("{0}{1}{2}{3}/{4}", request.Url.Scheme, Uri.SchemeDelimiter, request.Url.Host, request.Url.Port != 80 && UrlTrackerSettings.AppendPortNumber ? string.Concat(":", request.Url.Port) : string.Empty, request.RawUrl.StartsWith("/") ? request.RawUrl.Substring(1) : request.RawUrl)))
                        {
                            LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect URL is the same as Request.RawUrl; don't redirect");
                            return;
                        }
                        if (request.Url.Host.Equals(redirectUri.Host, StringComparison.OrdinalIgnoreCase))
                        {
                            redirectLocation = redirectUri.PathAndQuery + redirectUri.Fragment;
                        }
                        else
                        {
                            redirectLocation = redirectUri.AbsoluteUri;
                        }
                        LoggingHelper.LogInformation("UrlTracker HttpModule | Response redirectlocation set to: {0}", redirectLocation);
                    }

                    response.Clear();
                    response.StatusCode = redirectHttpCode.Value;
                    LoggingHelper.LogInformation("UrlTracker HttpModule | Response statuscode set to: {0}", response.StatusCode);

                    if (!string.IsNullOrEmpty(redirectLocation))
                    {
                        response.RedirectLocation = redirectLocation;
                    }

                    response.End();
                }
                else if (!ignoreHttpStatusCode)
                {
                    // Log 404
                    if (!UrlTrackerSettings.IsNotFoundTrackingDisabled && !UrlTrackerSettings.NotFoundUrlsToIgnore.Contains(urlWithoutQueryString) && !UmbracoHelper.IsReservedPathOrUrl(urlWithoutQueryString) && request.Headers["X-UrlTracker-Ignore404"] != "1")
                    {
                        bool ignoreNotFoundBasedOnRegexPatterns = false;
                        foreach (Regex regexNotFoundUrlToIgnore in UrlTrackerSettings.RegexNotFoundUrlsToIgnore)
                        {
                            if (regexNotFoundUrlToIgnore.IsMatch(urlWithoutQueryString))
                            {
                                ignoreNotFoundBasedOnRegexPatterns = true;
                                break;
                            }
                        }

                        if (!ignoreNotFoundBasedOnRegexPatterns)
                        {
                            LoggingHelper.LogInformation("UrlTracker HttpModule | No match found, logging as 404 not found");
                            query = "INSERT INTO icUrlTracker (OldUrl, RedirectRootNodeId, ";
                            if (urlHasQueryString)
                            {
                                query += "OldUrlQueryString, ";
                            }
                            query += "Is404, Referrer) VALUES (@oldUrl, @redirectRootNodeId, ";
                            if (urlHasQueryString)
                            {
                                query += "@oldUrlQueryString, ";
                            }
                            query += "1, @referrer)";
                            _sqlHelper.ExecuteNonQuery(query, _sqlHelper.CreateParameter("oldUrl", urlWithoutQueryString), _sqlHelper.CreateParameter("redirectRootNodeId", rootNodeId), _sqlHelper.CreateParameter("oldUrlQueryString", request.QueryString.ToString()), _sqlHelper.CreateParameter("referrer", request.UrlReferrer != null && !request.UrlReferrer.ToString().Contains(UrlTrackerSettings.ReferrerToIgnore) ? (object)request.UrlReferrer.ToString() : DBNull.Value));
                        }
                    }
                    if (UrlTrackerSettings.IsNotFoundTrackingDisabled)
                    {
                        LoggingHelper.LogInformation("UrlTracker HttpModule | No match found and not found (404) tracking is disabled");
                    }
                    if (UrlTrackerSettings.NotFoundUrlsToIgnore.Contains(urlWithoutQueryString))
                    {
                        LoggingHelper.LogInformation("UrlTracker HttpModule | No match found, url is configured to be ignored: {0}", urlWithoutQueryString);
                    }
                    else if (UmbracoHelper.IsReservedPathOrUrl(urlWithoutQueryString))
                    {
                        LoggingHelper.LogInformation("UrlTracker HttpModule | No match found, url is ignored because it's an umbraco reserved URL or path: {0}", urlWithoutQueryString);
                    }
                    else if (request.Headers["X-UrlTracker-Ignore404"] == "1")
                    {
                        LoggingHelper.LogInformation("UrlTracker HttpModule | No match found, url is ignored because the 'X-UrlTracker-Ignore404' header was set to '1'. URL: {0}", urlWithoutQueryString);
                    }
                }
                else
                {
                    LoggingHelper.LogInformation("UrlTracker HttpModule | No match found in {0}", callingEventName);
                }
            }
            else
            {
                LoggingHelper.LogInformation("UrlTracker HttpModule | Response statuscode is not 404, UrlTracker won't do anything");
            }

            LoggingHelper.LogInformation("UrlTracker HttpModule | {0} end", callingEventName);
        }
        private static void UrlTrackerDo(bool ignoreHttpStatusCode = false)
        {
            HttpContext  context  = HttpContext.Current;
            HttpRequest  request  = context.Request;
            HttpResponse response = context.Response;

            if (!string.IsNullOrEmpty(request.QueryString[UrlTrackerSettings.HttpModuleCheck]))
            {
                response.Clear();
                response.Write(UrlTrackerSettings.HttpModuleCheck);
                response.StatusCode = 200;
                response.End();
                return;
            }

            LoggingHelper.LogInformation("UrlTracker HttpModule | PostReleaseRequestState start");

            if (UrlTrackerSettings.IsDisabled)
            {
                LoggingHelper.LogInformation("UrlTracker HttpModule | UrlTracker is disabled by config");
                return;
            }

            string url = request.RawUrl;

            if (url.StartsWith("/"))
            {
                url = url.Substring(1);
            }

            LoggingHelper.LogInformation("UrlTracker HttpModule | Incoming URL is: {0}", url);

            if (_urlTrackerInstalled && (response.StatusCode == (int)HttpStatusCode.NotFound || ignoreHttpStatusCode))
            {
                if (response.StatusCode == (int)HttpStatusCode.NotFound)
                {
                    LoggingHelper.LogInformation("UrlTracker HttpModule | Response statusCode is 404, continue URL matching");
                }
                else
                {
                    LoggingHelper.LogInformation("UrlTracker HttpModule | Checking for forced redirects (AcquireRequestState), continue URL matching");
                }

                string urlWithoutQueryString = url;
                if (InfoCaster.Umbraco.UrlTracker.Helpers.UmbracoHelper.IsReservedPathOrUrl(url))
                {
                    LoggingHelper.LogInformation("UrlTracker HttpModule | URL is an umbraco reserved path or url, ignore request");
                    return;
                }

                bool urlHasQueryString = request.QueryString.HasKeys() && url.Contains('?');
                if (urlHasQueryString)
                {
                    urlWithoutQueryString = url.Substring(0, url.IndexOf('?'));
                }

                string shortestUrl = UrlTrackerHelper.ResolveShortestUrl(urlWithoutQueryString);

                int rootNodeId = -1;
                List <UrlTrackerDomain> domains = UmbracoHelper.GetDomains();
                if (domains.Any())
                {
                    string fullRawUrl;
                    string previousFullRawUrlTest;
                    string fullRawUrlTest;
                    fullRawUrl = previousFullRawUrlTest = fullRawUrlTest = string.Format("{0}://{1}{2}", request.Url.Scheme, request.Url.Host, request.RawUrl);

                    UrlTrackerDomain urlTrackerDomain;
                    do
                    {
                        if (previousFullRawUrlTest.EndsWith("/"))
                        {
                            urlTrackerDomain = domains.FirstOrDefault(x => x.UrlWithDomain == fullRawUrlTest);
                            if (urlTrackerDomain != null)
                            {
                                rootNodeId            = urlTrackerDomain.NodeId;
                                urlWithoutQueryString = fullRawUrl.Replace(fullRawUrlTest, string.Empty);
                                if (urlWithoutQueryString.StartsWith("/"))
                                {
                                    urlWithoutQueryString = urlWithoutQueryString.Substring(1);
                                }
                                break;
                            }
                        }
                        previousFullRawUrlTest = fullRawUrlTest;
                        fullRawUrlTest         = fullRawUrlTest.Substring(0, fullRawUrlTest.Length - 1);
                    }while (fullRawUrlTest.Length > 0);
                }
                if (rootNodeId == -1)
                {
                    rootNodeId = -1;
                    List <INode> children = new Node(rootNodeId).ChildrenAsList;
                    if (children != null && children.Any())
                    {
                        rootNodeId = children.First().Id;
                    }
                }
                LoggingHelper.LogInformation("UrlTracker HttpModule | Current request's rootNodeId: {0}", rootNodeId);

                string redirectUrl      = null;
                int?   redirectHttpCode = null;
                bool   redirectPassThroughQueryString = true;

                // Normal matching
                string query = "SELECT * FROM icUrlTracker WHERE Is404 = 0 AND ForceRedirect = @forceRedirect AND (RedirectRootNodeId = @redirectRootNodeId OR RedirectRootNodeId IS NULL) AND (OldUrl = @url OR OldUrl = @shortestUrl) ORDER BY OldUrlQueryString DESC";
                using (IRecordsReader reader = _sqlHelper.ExecuteReader(query, _sqlHelper.CreateParameter("forceRedirect", ignoreHttpStatusCode ? "1" : "0"), _sqlHelper.CreateParameter("redirectRootNodeId", rootNodeId), _sqlHelper.CreateParameter("url", urlWithoutQueryString), _sqlHelper.CreateParameter("shortestUrl", shortestUrl)))
                {
                    while (reader.Read())
                    {
                        LoggingHelper.LogInformation("UrlTracker HttpModule | URL match found");
                        if (!reader.IsNull("RedirectNodeId"))
                        {
                            int redirectNodeId = reader.GetInt("RedirectNodeId");
                            LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect node id: {0}", redirectNodeId);
                            Node n = new Node(redirectNodeId);
                            if (n != null && n.Name != null && n.Id > 0)
                            {
                                string tempUrl = UmbracoHelper.GetUrl(redirectNodeId);
                                redirectUrl = tempUrl.StartsWith("http") ? tempUrl : string.Format("{0}://{1}{2}{3}", HttpContext.Current.Request.Url.Scheme, HttpContext.Current.Request.Url.Host, HttpContext.Current.Request.Url.Port != 80 ? string.Concat(":", HttpContext.Current.Request.Url.Port) : string.Empty, tempUrl);
                                if (redirectUrl.StartsWith("http"))
                                {
                                    Uri    redirectUri  = new Uri(redirectUrl);
                                    string pathAndQuery = Uri.UnescapeDataString(redirectUri.PathAndQuery);
                                    redirectUrl = pathAndQuery.StartsWith("/") && pathAndQuery != "/" ? pathAndQuery.Substring(1) : pathAndQuery;
                                }
                                LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url set to: {0}", redirectUrl);
                            }
                            else
                            {
                                LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect node is invalid; node is null, name is null or id <= 0");
                                continue;
                            }
                        }
                        else if (!reader.IsNull("RedirectUrl"))
                        {
                            redirectUrl = reader.GetString("RedirectUrl");
                            LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url set to: {0}", redirectUrl);
                        }

                        redirectPassThroughQueryString = reader.GetBoolean("RedirectPassThroughQueryString");
                        LoggingHelper.LogInformation("UrlTracker HttpModule | PassThroughQueryString is {0}", redirectPassThroughQueryString ? "enabled" : "disabled");

                        NameValueCollection oldUrlQueryString = null;
                        if (!reader.IsNull("OldUrlQueryString"))
                        {
                            oldUrlQueryString = HttpUtility.ParseQueryString(reader.GetString("OldUrlQueryString"));
                            LoggingHelper.LogInformation("UrlTracker HttpModule | Old URL query string set to: {0}", oldUrlQueryString.ToQueryString());
                        }

                        if ((urlHasQueryString || oldUrlQueryString != null) && (oldUrlQueryString != null && !request.QueryString.CollectionEquals(oldUrlQueryString)))
                        {
                            LoggingHelper.LogInformation("UrlTracker HttpModule | Aborting; query strings don't match");
                            continue;
                        }

                        redirectHttpCode = reader.GetInt("RedirectHttpCode");
                        LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect http code set to: {0}", redirectHttpCode);

                        break;
                    }
                }

                if (!redirectHttpCode.HasValue)
                {
                    // Regex matching
                    query = "SELECT * FROM icUrlTracker WHERE Is404 = 0 AND ForceRedirect = @forceRedirect AND RedirectRootNodeId = @redirectRootNodeId AND OldRegex IS NOT NULL ORDER BY Inserted DESC";
                    using (IRecordsReader reader = _sqlHelper.ExecuteReader(query, _sqlHelper.CreateParameter("forceRedirect", ignoreHttpStatusCode ? "1" : "0"), _sqlHelper.CreateParameter("redirectRootNodeId", rootNodeId)))
                    {
                        Regex regex;
                        while (reader.Read())
                        {
                            regex = new Regex(reader.GetString("OldRegex"));
                            if (regex.IsMatch(url))
                            {
                                LoggingHelper.LogInformation("UrlTracker HttpModule | Regex match found");
                                if (!reader.IsNull("RedirectNodeId"))
                                {
                                    int redirectNodeId = reader.GetInt("RedirectNodeId");
                                    LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect node id: {0}", redirectNodeId);
                                    Node n = new Node(redirectNodeId);
                                    if (n != null && n.Name != null && n.Id > 0)
                                    {
                                        redirectUrl = UmbracoHelper.GetUrl(redirectNodeId);
                                        LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url set to: {0}", redirectUrl);
                                    }
                                    else
                                    {
                                        LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect node is invalid; node is null, name is null or id <= 0");
                                    }
                                }
                                else if (!reader.IsNull("RedirectUrl"))
                                {
                                    redirectUrl = reader.GetString("RedirectUrl");
                                    LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url set to: {0}", redirectUrl);

                                    if (_capturingGroupsRegex.IsMatch(redirectUrl))
                                    {
                                        LoggingHelper.LogInformation("UrlTracker HttpModule | Found regex capturing groups in the redirect url");
                                        redirectUrl = regex.Replace(url, redirectUrl);

                                        LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect url changed to: {0} (because of regex capturing groups)", redirectUrl);
                                    }
                                }

                                redirectPassThroughQueryString = reader.GetBoolean("RedirectPassThroughQueryString");
                                LoggingHelper.LogInformation("UrlTracker HttpModule | PassThroughQueryString is enabled");

                                redirectHttpCode = reader.GetInt("RedirectHttpCode");
                                LoggingHelper.LogInformation("UrlTracker HttpModule | Redirect http code set to: {0}", redirectHttpCode);
                            }
                        }
                    }
                }

                if (redirectHttpCode.HasValue)
                {
                    response.Clear();
                    response.StatusCode = redirectHttpCode.Value;
                    LoggingHelper.LogInformation("UrlTracker HttpModule | Response statuscode set to: {0}", response.StatusCode);
                    if (!string.IsNullOrEmpty(redirectUrl))
                    {
                        if (redirectUrl == "/")
                        {
                            redirectUrl = string.Empty;
                        }
                        Uri redirectUri = new Uri(redirectUrl.StartsWith("http") ? redirectUrl : string.Format("{0}://{1}{2}/{3}", request.Url.Scheme, request.Url.Host, request.Url.Port != 80 ? string.Concat(":", request.Url.Port) : string.Empty, redirectUrl));
                        if (redirectPassThroughQueryString)
                        {
                            NameValueCollection redirectQueryString = HttpUtility.ParseQueryString(redirectUri.Query);
                            NameValueCollection newQueryString      = HttpUtility.ParseQueryString(request.Url.Query);
                            if (redirectQueryString.HasKeys())
                            {
                                newQueryString = newQueryString.Merge(redirectQueryString);
                            }
                            string pathAndQuery = Uri.UnescapeDataString(redirectUri.PathAndQuery);
                            redirectUri = new Uri(string.Format("{0}://{1}{2}/{3}{4}", redirectUri.Scheme, redirectUri.Host, redirectUri.Port != 80 ? string.Concat(":", redirectUri.Port) : string.Empty, pathAndQuery.Contains('?') ? pathAndQuery.Substring(0, pathAndQuery.IndexOf('?')) : pathAndQuery.StartsWith("/") ? pathAndQuery.Substring(1) : pathAndQuery, newQueryString.HasKeys() ? string.Concat("?", newQueryString.ToQueryString()) : string.Empty));
                        }
                        response.RedirectLocation = redirectUri.ToString();
                        LoggingHelper.LogInformation("UrlTracker HttpModule | Response redirectlocation set to: {0}", response.RedirectLocation);
                    }
                    response.End();
                }
                else if (!ignoreHttpStatusCode)
                {
                    // Log 404
                    if (!UrlTrackerSettings.IsNotFoundTrackingDisabled && !UrlTrackerSettings.NotFoundUrlsToIgnore.Contains(urlWithoutQueryString) && !UmbracoHelper.IsReservedPathOrUrl(urlWithoutQueryString) && request.Headers["X-UrlTracker-Ignore404"] != "1")
                    {
                        bool ignoreNotFoundBasedOnRegexPatterns = false;
                        foreach (Regex regexNotFoundUrlToIgnore in UrlTrackerSettings.RegexNotFoundUrlsToIgnore)
                        {
                            if (regexNotFoundUrlToIgnore.IsMatch(urlWithoutQueryString))
                            {
                                ignoreNotFoundBasedOnRegexPatterns = true;
                                break;
                            }
                        }

                        if (!ignoreNotFoundBasedOnRegexPatterns)
                        {
                            LoggingHelper.LogInformation("UrlTracker HttpModule | No match found, logging as 404 not found");
                            query = "INSERT INTO icUrlTracker (OldUrl, RedirectRootNodeId, ";
                            if (urlHasQueryString)
                            {
                                query += "OldUrlQueryString, ";
                            }
                            query += "Is404, Referrer) VALUES (@oldUrl, @redirectRootNodeId, ";
                            if (urlHasQueryString)
                            {
                                query += "@oldUrlQueryString, ";
                            }
                            query += "1, @referrer)";
                            _sqlHelper.ExecuteNonQuery(query, _sqlHelper.CreateParameter("oldUrl", urlWithoutQueryString), _sqlHelper.CreateParameter("redirectRootNodeId", rootNodeId), _sqlHelper.CreateParameter("oldUrlQueryString", request.QueryString.ToString()), _sqlHelper.CreateParameter("referrer", request.UrlReferrer != null && !request.UrlReferrer.ToString().Contains(UrlTrackerSettings.ReferrerToIgnore) ? (object)request.UrlReferrer.ToString() : DBNull.Value));
                        }
                    }
                    if (UrlTrackerSettings.IsNotFoundTrackingDisabled)
                    {
                        LoggingHelper.LogInformation("UrlTracker HttpModule | No match found and not found (404) tracking is disabled");
                    }
                    if (UrlTrackerSettings.NotFoundUrlsToIgnore.Contains(urlWithoutQueryString))
                    {
                        LoggingHelper.LogInformation("UrlTracker HttpModule | No match found, url is configured to be ignored: {0}", urlWithoutQueryString);
                    }
                    else if (UmbracoHelper.IsReservedPathOrUrl(urlWithoutQueryString))
                    {
                        LoggingHelper.LogInformation("UrlTracker HttpModule | No match found, url is ignored because it's an umbraco reserved URL or path: {0}", urlWithoutQueryString);
                    }
                    else if (request.Headers["X-UrlTracker-Ignore404"] == "1")
                    {
                        LoggingHelper.LogInformation("UrlTracker HttpModule | No match found, url is ignored because the 'X-UrlTracker-Ignore404' header was set to '1'. URL: {0}", urlWithoutQueryString);
                    }
                }
            }
            else
            {
                LoggingHelper.LogInformation("UrlTracker HttpModule | Response statuscode is not 404, UrlTracker won't do anything");
            }

            LoggingHelper.LogInformation("UrlTracker HttpModule | PostReleaseRequestState end");
        }