Package org.apache.roller.weblogger.ui.rendering.util

Examples of org.apache.roller.weblogger.ui.rendering.util.WeblogPageRequest



        Weblog weblog = null;
        boolean isSiteWide = false;

        WeblogPageRequest pageRequest = null;
        try {
            pageRequest = new WeblogPageRequest(request);

            weblog = pageRequest.getWeblog();
            if (weblog == null) {
                throw new WebloggerException("unable to lookup weblog: " + pageRequest.getWeblogHandle());
            }

            // is this the site-wide weblog?
            isSiteWide = WebloggerRuntimeConfig.isSiteWideWeblog(pageRequest.getWeblogHandle());
        } catch (Exception e) {
            // some kind of error parsing the request or looking up weblog
            log.debug("error creating page request", e);
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }


        // determine the lastModified date for this content
        long lastModified = System.currentTimeMillis();
        if (isSiteWide) {
            lastModified = siteWideCache.getLastModified().getTime();
        } else if (weblog.getLastModified() != null) {
            lastModified = weblog.getLastModified().getTime();
        }

        // 304 Not Modified handling.
        // We skip this for logged in users to avoid the scenerio where a user
        // views their weblog, logs in, then gets a 304 without the 'edit' links
        if (!pageRequest.isLoggedIn()) {
            if (ModDateHeaderUtil.respondIfNotModified(request, response, lastModified)) {
                return;
            } else {
                // set last-modified date
                ModDateHeaderUtil.setLastModifiedHeader(response, lastModified);
            }
        }


        // generate cache key
        String cacheKey = null;
        if (isSiteWide) {
            cacheKey = siteWideCache.generateKey(pageRequest);
        } else {
            cacheKey = weblogPageCache.generateKey(pageRequest);
        }

        // cached content checking
        if ((!this.excludeOwnerPages || !pageRequest.isLoggedIn()) && request.getAttribute("skipCache") == null) {

            CachedContent cachedContent = null;
            if (isSiteWide) {
                cachedContent = (CachedContent) siteWideCache.get(cacheKey);
            } else {
                cachedContent = (CachedContent) weblogPageCache.get(cacheKey, lastModified);
            }

            if (cachedContent != null) {
                log.debug("HIT " + cacheKey);

                // allow for hit counting
                if (!isSiteWide) {
                    this.processHit(weblog, request.getRequestURL().toString(), request.getHeader("referer"));
                }

                response.setContentLength(cachedContent.getContent().length);
                response.setContentType(cachedContent.getContentType());
                response.getOutputStream().write(cachedContent.getContent());
                return;
            } else {
                log.debug("MISS " + cacheKey);
            }
        }

        log.debug("Looking for template to use for rendering");

        // figure out what template to use
        ThemeTemplate page = null;

        // If this is a popup request, then deal with it specially
        // TODO: do we really need to keep supporting this?
        if (request.getParameter("popup") != null) {
            try {
                // Does user have a popupcomments page?
                page = weblog.getTheme().getTemplateByName("_popupcomments");
            } catch (Exception e) {
                // ignored ... considered page not found
            }

            // User doesn't have one so return the default
            if (page == null) {
                page = new StaticThemeTemplate("templates/weblog/popupcomments.vm", "velocity");
            }

            // If request specified the page, then go with that
        } else if ("page".equals(pageRequest.getContext())) {
            page = pageRequest.getWeblogPage();

            // if we don't have this page then 404, we don't let
            // this one fall through to the default template
            if (page == null) {
                if (!response.isCommitted()) {
                    response.reset();
                }
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
                return;
            }

            // If request specified tags section index, then look for custom template
        } else if ("tags".equals(pageRequest.getContext()) && pageRequest.getTags() == null) {
            try {
                page = weblog.getTheme().getTemplateByAction(ThemeTemplate.ACTION_TAGSINDEX);
            } catch (Exception e) {
                log.error("Error getting weblog page for action 'tagsIndex'", e);
            }

            // if we don't have a custom tags page then 404, we don't let
            // this one fall through to the default template
            if (page == null) {
                if (!response.isCommitted()) {
                    response.reset();
                }
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
                return;
            }

            // If this is a permalink then look for a permalink template
        } else if (pageRequest.getWeblogAnchor() != null) {
            try {
                page = weblog.getTheme().getTemplateByAction(ThemeTemplate.ACTION_PERMALINK);
            } catch (Exception e) {
                log.error("Error getting weblog page for action 'permalink'", e);
            }
        }

        // if we haven't found a page yet then try our default page
        if (page == null) {
            try {
                page = weblog.getTheme().getDefaultTemplate();
            } catch (Exception e) {
                log.error("Error getting default page for weblog = " + weblog.getHandle(), e);
            }
        }

        // Still no page?  Then that is a 404
        if (page == null) {
            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }

        log.debug("page found, dealing with it");

        // validation.  make sure that request input makes sense.
        boolean invalid = false;
        if (pageRequest.getWeblogPageName() != null && page.isHidden()) {
            invalid = true;
        }
        if (pageRequest.getLocale() != null) {

            // locale view only allowed if weblog has enabled it
            if (!pageRequest.getWeblog().isEnableMultiLang()) {
                invalid = true;
            }
        }
        if (pageRequest.getWeblogAnchor() != null) {

            // permalink specified.
            // entry must exist, be published before current time, and locale must match
            WeblogEntry entry = pageRequest.getWeblogEntry();
            if (entry == null) {
                invalid = true;
            } else if (pageRequest.getLocale() != null && !entry.getLocale().startsWith(pageRequest.getLocale())) {
                invalid = true;
            } else if (!entry.isPublished()) {
                invalid = true;
            } else if (new Date().before(entry.getPubTime())) {
                invalid = true;
            }
        } else if (pageRequest.getWeblogCategoryName() != null) {

            // category specified.  category must exist.
            if (pageRequest.getWeblogCategory() == null) {
                invalid = true;
            }
        } else if (pageRequest.getTags() != null && pageRequest.getTags().size() > 0) {

            try {
                // tags specified.  make sure they exist.
                WeblogManager wmgr = WebloggerFactory.getWeblogger().getWeblogManager();
                invalid = !wmgr.getTagComboExists(pageRequest.getTags(), (isSiteWide) ? null : weblog);
            } catch (WebloggerException ex) {
                invalid = true;
            }
        }


        if (invalid) {
            log.debug("page failed validation, bailing out");
            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }


        // do we need to force a specific locale for the request?
        if (pageRequest.getLocale() == null && !weblog.isShowAllLangs()) {
            pageRequest.setLocale(weblog.getLocale());
        }


        // allow for hit counting
        if (!isSiteWide) {
            this.processHit(weblog, request.getRequestURL().toString(), request.getHeader("referer"));
        }


        // looks like we need to render content
        // set the content type
        String contentType = "text/html; charset=utf-8";
        if (StringUtils.isNotEmpty(page.getOutputContentType())) {
            contentType = page.getOutputContentType() + "; charset=utf-8";
        } else {
            String mimeType = RollerContext.getServletContext().getMimeType(page.getLink());
            if (mimeType != null) {
                // we found a match ... set the content type
                contentType = mimeType + "; charset=utf-8";
            } else {
                contentType = "text/html; charset=utf-8";
            }
        }

        HashMap model = new HashMap();
        try {
            PageContext pageContext = JspFactory.getDefaultFactory().getPageContext(this, request, response, "", false, 8192, true);

            // special hack for menu tag
            request.setAttribute("pageRequest", pageRequest);

            // populate the rendering model
            Map initData = new HashMap();
            initData.put("requestParameters", request.getParameterMap());
            initData.put("parsedRequest", pageRequest);
            initData.put("pageContext", pageContext);

            // define url strategy
            initData.put("urlStrategy", WebloggerFactory.getWeblogger().getUrlStrategy());

            // if this was a comment posting, check for comment form
            WeblogEntryCommentForm commentForm = (WeblogEntryCommentForm) request.getAttribute("commentForm");
            if (commentForm != null) {
                initData.put("commentForm", commentForm);
            }

            // Load models for pages
            String pageModels = WebloggerConfig.getProperty("rendering.pageModels");
            ModelLoader.loadModels(pageModels, model, initData, true);

            // Load special models for site-wide blog
            if (WebloggerRuntimeConfig.isSiteWideWeblog(weblog.getHandle())) {
                String siteModels = WebloggerConfig.getProperty("rendering.siteModels");
                ModelLoader.loadModels(siteModels, model, initData, true);
            }

            // Load weblog custom models
            ModelLoader.loadCustomModels(weblog, model, initData);

            // ick, gotta load pre-3.0 model stuff as well :(
            ModelLoader.loadOldModels(model, request, response, pageContext, pageRequest, WebloggerFactory.getWeblogger().getUrlStrategy());
        } catch (WebloggerException ex) {
            log.error("Error loading model objects for page", ex);

            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            return;
        }


        // lookup Renderer we are going to use
        Renderer renderer = null;
        try {
            log.debug("Looking up renderer");
            renderer = RendererManager.getRenderer(page);
        } catch (Exception e) {
            // nobody wants to render my content :(
            log.error("Couldn't find renderer for page " + page.getId(), e);

            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }

        // render content.  use size of about 24K for a standard page
        CachedContent rendererOutput = new CachedContent(24567, contentType);
        try {
            log.debug("Doing rendering");
            renderer.render(model, rendererOutput.getCachedWriter());

            // flush rendered output and close
            rendererOutput.flush();
            rendererOutput.close();
        } catch (Exception e) {
            // bummer, error during rendering
            log.error("Error during rendering for page " + page.getId(), e);

            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }


        // post rendering process
        // flush rendered content to response
        log.debug("Flushing response output");
        response.setContentType(contentType);
        response.setContentLength(rendererOutput.getContent().length);
        response.getOutputStream().write(rendererOutput.getContent());

        // cache rendered content.  only cache if user is not logged in?
        if ((!this.excludeOwnerPages || !pageRequest.isLoggedIn()) && request.getAttribute("skipCache") == null) {
            log.debug("PUT " + cacheKey);

            // put it in the right cache
            if (isSiteWide) {
                siteWideCache.put(cacheKey, rendererOutput);
View Full Code Here


        // bleh!  because ref processing does a flush it will close
        // our hibernate session and cause lazy init exceptions on
        // objects we have fetched, so we need to use a separate
        // page request object for this
        WeblogPageRequest pageRequest;
        try {
            pageRequest = new WeblogPageRequest(request);
        } catch (InvalidRequestException ex) {
            return false;
        }

        // if this came from site-wide frontpage then skip it
        if (WebloggerRuntimeConfig.isSiteWideWeblog(pageRequest.getWeblogHandle())) {
            return false;
        }

        // if this came from a robot then don't process it
        if (robotPattern != null) {
            String userAgent = request.getHeader("User-Agent");
            if (userAgent != null && userAgent.length() > 0 && robotPattern.matcher(userAgent).matches()) {
                log.debug("skipping referrer from robot");
                return false;
            }
        }

        String referrerUrl = request.getHeader("Referer");
        StringBuffer reqsb = request.getRequestURL();
        if (request.getQueryString() != null) {
            reqsb.append("?");
            reqsb.append(request.getQueryString());
        }
        String requestUrl = reqsb.toString();

        log.debug("referrer = " + referrerUrl);

        // if this came from persons own blog then don't process it
        String selfSiteFragment = "/" + pageRequest.getWeblogHandle();
        if (referrerUrl != null && referrerUrl.indexOf(selfSiteFragment) != -1) {
            log.debug("skipping referrer from own blog");
            return false;
        }

        // validate the referrer
        if (pageRequest != null && pageRequest.getWeblogHandle() != null) {

            // Base page URLs, with and without www.
            String basePageUrlWWW = WebloggerRuntimeConfig.getAbsoluteContextURL() + "/" + pageRequest.getWeblogHandle();
            String basePageUrl = basePageUrlWWW;
            if (basePageUrlWWW.startsWith("http://www.")) {
                // chop off the http://www.
                basePageUrl = "http://" + basePageUrlWWW.substring(11);
            }

            // ignore referrers coming from users own blog
            if (referrerUrl == null || (!referrerUrl.startsWith(basePageUrl) && !referrerUrl.startsWith(basePageUrlWWW))) {

                // validate the referrer
                if (referrerUrl != null) {
                    // treat editor referral as direct
                    int lastSlash = requestUrl.indexOf("/", 8);
                    if (lastSlash == -1) {
                        lastSlash = requestUrl.length();
                    }
                    String requestSite = requestUrl.substring(0, lastSlash);

                    if (referrerUrl.matches(requestSite + ".*\\.rol.*")) {
                        referrerUrl = null;
                    } else if (BlacklistChecker.checkReferrer(pageRequest.getWeblog(), referrerUrl)) {
                        return true;
                    }
                }
            } else {
                log.debug("Ignoring referer = " + referrerUrl);
                return false;
            }
        }

        // referrer is valid, lets record it
        try {
            IncomingReferrer referrer = new IncomingReferrer();
            referrer.setReferrerUrl(referrerUrl);
            referrer.setRequestUrl(requestUrl);
            referrer.setWeblogHandle(pageRequest.getWeblogHandle());
            referrer.setWeblogAnchor(pageRequest.getWeblogAnchor());
            referrer.setWeblogDateString(pageRequest.getWeblogDate());

            ReferrerQueueManager refQueue = WebloggerFactory.getWeblogger().getReferrerQueueManager();
            refQueue.processReferrer(referrer);
        } catch (Exception e) {
            log.error("Error processing referrer", e);
View Full Code Here

            // this is a little hacky, but nothing we can do about it
            // we need the 'weblogRequest' to be a pageRequest so other models
            // are properly loaded, which means that searchRequest needs its
            // own custom initData property aside from the standard weblogRequest.
            // possible better approach is make searchRequest extend pageRequest.
            WeblogPageRequest pageRequest = new WeblogPageRequest();
            pageRequest.setWeblogHandle(searchRequest.getWeblogHandle());
            pageRequest.setWeblogCategoryName(searchRequest.getWeblogCategoryName());
            initData.put("parsedRequest", pageRequest);
            initData.put("searchRequest", searchRequest);
           
            // define url strategy
            initData.put("urlStrategy", WebloggerFactory.getWeblogger().getUrlStrategy());
View Full Code Here

            // this is a little hacky, but nothing we can do about it
            // we need the 'weblogRequest' to be a pageRequest so other models
            // are properly loaded, which means that searchRequest needs its
            // own custom initData property aside from the standard weblogRequest.
            // possible better approach is make searchRequest extend pageRequest.
            WeblogPageRequest pageRequest = new WeblogPageRequest();
            pageRequest.setWeblogHandle(searchRequest.getWeblogHandle());
            pageRequest.setWeblogCategoryName(searchRequest.getWeblogCategoryName());
            initData.put("parsedRequest", pageRequest);
            initData.put("searchRequest", searchRequest);
           
            // define url strategy
            initData.put("urlStrategy", WebloggerFactory.getWeblogger().getUrlStrategy());
View Full Code Here


        Weblog weblog = null;
        boolean isSiteWide = false;

        WeblogPageRequest pageRequest = null;
        try {
            pageRequest = new WeblogPageRequest(request);

            weblog = pageRequest.getWeblog();
            if (weblog == null) {
                throw new WebloggerException("unable to lookup weblog: " + pageRequest.getWeblogHandle());
            }

            // is this the site-wide weblog?
            isSiteWide = WebloggerRuntimeConfig.isSiteWideWeblog(pageRequest.getWeblogHandle());
        } catch (Exception e) {
            // some kind of error parsing the request or looking up weblog
            log.debug("error creating page request", e);
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }


        // determine the lastModified date for this content
        long lastModified = System.currentTimeMillis();
        if (isSiteWide) {
            lastModified = siteWideCache.getLastModified().getTime();
        } else if (weblog.getLastModified() != null) {
            lastModified = weblog.getLastModified().getTime();
        }

        // 304 Not Modified handling.
        // We skip this for logged in users to avoid the scenerio where a user
        // views their weblog, logs in, then gets a 304 without the 'edit' links
        if (!pageRequest.isLoggedIn()) {
            if (ModDateHeaderUtil.respondIfNotModified(request, response, lastModified)) {
                return;
            } else {
                // set last-modified date
                ModDateHeaderUtil.setLastModifiedHeader(response, lastModified);
            }
        }


        // generate cache key
        String cacheKey = null;
        if (isSiteWide) {
            cacheKey = siteWideCache.generateKey(pageRequest);
        } else {
            cacheKey = weblogPageCache.generateKey(pageRequest);
        }
       
        // Development only. Reload if theme has been modified
    if (themeReload) {
      try {
        ThemeManager manager = WebloggerFactory.getWeblogger().getThemeManager();
        boolean reloaded = manager.reLoadThemeFromDisk(weblog.getEditorTheme());
        if (reloaded) {
          if (isSiteWide) {
            siteWideCache.clear();
          } else {
            weblogPageCache.clear();
          }
          I18nMessages.reloadBundle(weblog.getLocaleInstance());
        }

      } catch (Exception ex) {
        log.error("ERROR - reloading theme " + ex);
      }
    }

        // cached content checking
        if ((!this.excludeOwnerPages || !pageRequest.isLoggedIn()) && request.getAttribute("skipCache") == null) {

            CachedContent cachedContent = null;
            if (isSiteWide) {
                cachedContent = (CachedContent) siteWideCache.get(cacheKey);
            } else {
                cachedContent = (CachedContent) weblogPageCache.get(cacheKey, lastModified);
            }

            if (cachedContent != null) {
                log.debug("HIT " + cacheKey);

                // allow for hit counting
                if (!isSiteWide) {
                    this.processHit(weblog, request.getRequestURL().toString(), request.getHeader("referer"));
                }

                response.setContentLength(cachedContent.getContent().length);
                response.setContentType(cachedContent.getContentType());
                response.getOutputStream().write(cachedContent.getContent());
                return;
            } else {
                log.debug("MISS " + cacheKey);
            }
        }

        log.debug("Looking for template to use for rendering");

        // figure out what template to use
        ThemeTemplate page = null;

        // If this is a popup request, then deal with it specially
        // TODO: do we really need to keep supporting this?
        if (request.getParameter("popup") != null) {
            try {
                // Does user have a popupcomments page?
                page = weblog.getTheme().getTemplateByName("_popupcomments");
            } catch (Exception e) {
                // ignored ... considered page not found
            }

            // User doesn't have one so return the default
            if (page == null) {
                page = new StaticThemeTemplate("templates/weblog/popupcomments.vm", "velocity");
            }

            // If request specified the page, then go with that
        } else if ("page".equals(pageRequest.getContext())) {
            page = pageRequest.getWeblogPage();

            // if we don't have this page then 404, we don't let
            // this one fall through to the default template
            if (page == null) {
                if (!response.isCommitted()) {
                    response.reset();
                }
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
                return;
            }

            // If request specified tags section index, then look for custom template
        } else if ("tags".equals(pageRequest.getContext()) && pageRequest.getTags() != null) {
            try {
                page = weblog.getTheme().getTemplateByAction(ThemeTemplate.ACTION_TAGSINDEX);
            } catch (Exception e) {
                log.error("Error getting weblog page for action 'tagsIndex'", e);
            }

            // if we don't have a custom tags page then 404, we don't let
            // this one fall through to the default template
            if (page == null) {
                if (!response.isCommitted()) {
                    response.reset();
                }
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
                return;
            }

            // If this is a permalink then look for a permalink template
        } else if (pageRequest.getWeblogAnchor() != null) {
            try {
                page = weblog.getTheme().getTemplateByAction(ThemeTemplate.ACTION_PERMALINK);
            } catch (Exception e) {
                log.error("Error getting weblog page for action 'permalink'", e);
            }
        }

        // if we haven't found a page yet then try our default page
        if (page == null) {
            try {
                page = weblog.getTheme().getDefaultTemplate();
            } catch (Exception e) {
                log.error("Error getting default page for weblog = " + weblog.getHandle(), e);
            }
        }

        // Still no page?  Then that is a 404
        if (page == null) {
            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }

        log.debug("page found, dealing with it");

        // validation.  make sure that request input makes sense.
        boolean invalid = false;
        if (pageRequest.getWeblogPageName() != null && page.isHidden()) {
            invalid = true;
        }
        if (pageRequest.getLocale() != null) {

            // locale view only allowed if weblog has enabled it
            if (!pageRequest.getWeblog().isEnableMultiLang()) {
                invalid = true;
            }
        }
        if (pageRequest.getWeblogAnchor() != null) {

            // permalink specified.
            // entry must exist, be published before current time, and locale must match
            WeblogEntry entry = pageRequest.getWeblogEntry();
            if (entry == null) {
                invalid = true;
            } else if (pageRequest.getLocale() != null && !entry.getLocale().startsWith(pageRequest.getLocale())) {
                invalid = true;
            } else if (!entry.isPublished()) {
                invalid = true;
            } else if (new Date().before(entry.getPubTime())) {
                invalid = true;
            }
        } else if (pageRequest.getWeblogCategoryName() != null) {

            // category specified.  category must exist.
            if (pageRequest.getWeblogCategory() == null) {
                invalid = true;
            }
        } else if (pageRequest.getTags() != null && pageRequest.getTags().size() > 0) {

            try {
                // tags specified.  make sure they exist.
                WeblogEntryManager wmgr = WebloggerFactory.getWeblogger().getWeblogEntryManager();
                invalid = !wmgr.getTagComboExists(pageRequest.getTags(), (isSiteWide) ? null : weblog);
            } catch (WebloggerException ex) {
                invalid = true;
            }
        }


        if (invalid) {
            log.debug("page failed validation, bailing out");
            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }


        // do we need to force a specific locale for the request?
        if (pageRequest.getLocale() == null && !weblog.isShowAllLangs()) {
            pageRequest.setLocale(weblog.getLocale());
        }


        // allow for hit counting
        if (!isSiteWide) {
            this.processHit(weblog, request.getRequestURL().toString(), request.getHeader("referer"));
        }


        // looks like we need to render content
        // set the content type
        String contentType = "text/html; charset=utf-8";
        if (StringUtils.isNotEmpty(page.getOutputContentType())) {
            contentType = page.getOutputContentType() + "; charset=utf-8";
        } else {
            String mimeType = RollerContext.getServletContext().getMimeType(page.getLink());
            if (mimeType != null) {
                // we found a match ... set the content type
                contentType = mimeType + "; charset=utf-8";
            } else {
                contentType = "text/html; charset=utf-8";
            }
        }

        HashMap model = new HashMap();
        try {
            PageContext pageContext = JspFactory.getDefaultFactory().getPageContext(this, request, response, "", false, 8192, true);

            // special hack for menu tag
            request.setAttribute("pageRequest", pageRequest);

            // populate the rendering model
            Map initData = new HashMap();
            initData.put("requestParameters", request.getParameterMap());
            initData.put("parsedRequest", pageRequest);
            initData.put("pageContext", pageContext);

            // define url strategy
            initData.put("urlStrategy", WebloggerFactory.getWeblogger().getUrlStrategy());

            // if this was a comment posting, check for comment form
            WeblogEntryCommentForm commentForm = (WeblogEntryCommentForm) request.getAttribute("commentForm");
            if (commentForm != null) {
                initData.put("commentForm", commentForm);
            }

            // Load models for pages
            String pageModels = WebloggerConfig.getProperty("rendering.pageModels");
            ModelLoader.loadModels(pageModels, model, initData, true);

            // Load special models for site-wide blog
            if (WebloggerRuntimeConfig.isSiteWideWeblog(weblog.getHandle())) {
                String siteModels = WebloggerConfig.getProperty("rendering.siteModels");
                ModelLoader.loadModels(siteModels, model, initData, true);
            }

            // Load weblog custom models
            ModelLoader.loadCustomModels(weblog, model, initData);

            // ick, gotta load pre-3.0 model stuff as well :(
            ModelLoader.loadOldModels(model, request, response, pageContext, pageRequest, WebloggerFactory.getWeblogger().getUrlStrategy());
        } catch (WebloggerException ex) {
            log.error("Error loading model objects for page", ex);

            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            return;
        }


        // lookup Renderer we are going to use
        Renderer renderer = null;
        try {
            log.debug("Looking up renderer");
            renderer = RendererManager.getRenderer(page);
        } catch (Exception e) {
            // nobody wants to render my content :(
            log.error("Couldn't find renderer for page " + page.getId(), e);

            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }

        // render content.  use size of about 24K for a standard page
        CachedContent rendererOutput = new CachedContent(24567, contentType);
        try {
            log.debug("Doing rendering");
            renderer.render(model, rendererOutput.getCachedWriter());

            // flush rendered output and close
            rendererOutput.flush();
            rendererOutput.close();
        } catch (Exception e) {
            // bummer, error during rendering
            log.error("Error during rendering for page " + page.getId(), e);

            if (!response.isCommitted()) {
                response.reset();
            }
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }


        // post rendering process
        // flush rendered content to response
        log.debug("Flushing response output");
        response.setContentType(contentType);
        response.setContentLength(rendererOutput.getContent().length);
        response.getOutputStream().write(rendererOutput.getContent());

        // cache rendered content.  only cache if user is not logged in?
        if ((!this.excludeOwnerPages || !pageRequest.isLoggedIn()) && request.getAttribute("skipCache") == null) {
            log.debug("PUT " + cacheKey);

            // put it in the right cache
            if (isSiteWide) {
                siteWideCache.put(cacheKey, rendererOutput);
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        // bleh!  because ref processing does a flush it will close
        // our hibernate session and cause lazy init exceptions on
        // objects we have fetched, so we need to use a separate
        // page request object for this
        WeblogPageRequest pageRequest;
        try {
            pageRequest = new WeblogPageRequest(request);
        } catch (InvalidRequestException ex) {
            return false;
        }

        // if this came from site-wide frontpage then skip it
        if (WebloggerRuntimeConfig.isSiteWideWeblog(pageRequest.getWeblogHandle())) {
            return false;
        }

        // if this came from a robot then don't process it
        if (robotPattern != null) {
            String userAgent = request.getHeader("User-Agent");
            if (userAgent != null && userAgent.length() > 0 && robotPattern.matcher(userAgent).matches()) {
                log.debug("skipping referrer from robot");
                return false;
            }
        }

        String referrerUrl = request.getHeader("Referer");
        StringBuffer reqsb = request.getRequestURL();
        if (request.getQueryString() != null) {
            reqsb.append("?");
            reqsb.append(request.getQueryString());
        }
        String requestUrl = reqsb.toString();

        log.debug("referrer = " + referrerUrl);

        // if this came from persons own blog then don't process it
        String selfSiteFragment = "/" + pageRequest.getWeblogHandle();
        if (referrerUrl != null && referrerUrl.indexOf(selfSiteFragment) != -1) {
            log.debug("skipping referrer from own blog");
            return false;
        }

        // validate the referrer
        if (pageRequest != null && pageRequest.getWeblogHandle() != null) {

            // Base page URLs, with and without www.
            String basePageUrlWWW = WebloggerRuntimeConfig.getAbsoluteContextURL() + "/" + pageRequest.getWeblogHandle();
            String basePageUrl = basePageUrlWWW;
            if (basePageUrlWWW.startsWith("http://www.")) {
                // chop off the http://www.
                basePageUrl = "http://" + basePageUrlWWW.substring(11);
            }

            // ignore referrers coming from users own blog
            if (referrerUrl == null || (!referrerUrl.startsWith(basePageUrl) && !referrerUrl.startsWith(basePageUrlWWW))) {

                // validate the referrer
                if (referrerUrl != null) {
                    // treat editor referral as direct
                    int lastSlash = requestUrl.indexOf("/", 8);
                    if (lastSlash == -1) {
                        lastSlash = requestUrl.length();
                    }
                    String requestSite = requestUrl.substring(0, lastSlash);

                    if (referrerUrl.matches(requestSite + ".*\\.rol.*")) {
                        referrerUrl = null;
                    } else if (BlacklistChecker.checkReferrer(pageRequest.getWeblog(), referrerUrl)) {
                        return true;
                    }
                }
            } else {
                log.debug("Ignoring referer = " + referrerUrl);
                return false;
            }
        }

        // referrer is valid, lets record it
        try {
            IncomingReferrer referrer = new IncomingReferrer();
            referrer.setReferrerUrl(referrerUrl);
            referrer.setRequestUrl(requestUrl);
            referrer.setWeblogHandle(pageRequest.getWeblogHandle());
            referrer.setWeblogAnchor(pageRequest.getWeblogAnchor());
            referrer.setWeblogDateString(pageRequest.getWeblogDate());

            ReferrerQueueManager refQueue = WebloggerFactory.getWeblogger().getReferrerQueueManager();
            refQueue.processReferrer(referrer);
        } catch (Exception e) {
            log.error("Error processing referrer", e);
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