Examples with ResourceDownloaderFactory com.biglybt.pif.utils.resourcedownloader.ResourceDownloaderFactory used on opensource projects

Example 6 with ResourceDownloaderFactory

use of com.biglybt.pif.utils.resourcedownloader.ResourceDownloaderFactory in project BiglyBT by BiglySoftware.

the class WebEngine method getWebPageContentSupport.

private pageDetails getWebPageContentSupport(Proxy proxy, String proxy_host, String searchURL, SearchParameter[] searchParameters, Map<String, String> searchContext, String headers, boolean only_if_modified) throws SearchException {
    try {
        TorrentUtils.setTLSDescription("Search: " + getName());
        if (requiresLogin()) {
            throw new SearchLoginException("login required");
        }
        boolean vuze_file = searchURL.toLowerCase().startsWith("vuze:");
        if (!vuze_file) {
            String[] from_strs = new String[searchParameters.length];
            String[] to_strs = new String[searchParameters.length];
            for (int i = 0; i < searchParameters.length; i++) {
                SearchParameter parameter = searchParameters[i];
                from_strs[i] = "%" + parameter.getMatchPattern();
                to_strs[i] = URLEncoder.encode(parameter.getValue(), "UTF-8");
            }
            searchURL = GeneralUtils.replaceAll(searchURL, from_strs, to_strs);
            Iterator<Map.Entry<String, String>> it = searchContext.entrySet().iterator();
            while (it.hasNext()) {
                Map.Entry<String, String> entry = it.next();
                String key = entry.getKey();
                if (supportsContext(key)) {
                    if (searchURL.indexOf('?') == -1) {
                        searchURL += "?";
                    } else {
                        searchURL += "&";
                    }
                    String value = entry.getValue();
                    searchURL += key + "=" + URLEncoder.encode(value, "UTF-8");
                }
            }
        }
        // System.out.println(searchURL);
        // hack to support POST by encoding into URL
        // http://xxxx/index.php?main=search&azmethod=post_basic:SearchString1=%s&SearchString=&search=Search
        ResourceDownloaderFactory rdf = StaticUtilities.getResourceDownloaderFactory();
        URL initial_url;
        ResourceDownloader initial_url_rd;
        int post_pos = searchURL.indexOf("azmethod=");
        if (post_pos > 0) {
            String post_params = searchURL.substring(post_pos + 9);
            searchURL = searchURL.substring(0, post_pos - 1);
            debugLog("search_url: " + searchURL + ", post=" + post_params);
            initial_url = new URL(searchURL);
            int sep = post_params.indexOf(':');
            String type = post_params.substring(0, sep);
            if (!type.equals("post_basic")) {
                throw (new SearchException("Only basic type supported"));
            }
            post_params = post_params.substring(sep + 1);
            if (proxy == null) {
                initial_url_rd = rdf.create(initial_url, post_params);
            } else {
                initial_url_rd = rdf.create(initial_url, post_params, proxy);
            }
            initial_url_rd.setProperty("URL_Content-Type", "application/x-www-form-urlencoded");
        } else {
            debugLog("search_url: " + searchURL);
            initial_url = new URL(searchURL);
            if (proxy == null) {
                initial_url_rd = rdf.create(initial_url);
            } else {
                initial_url_rd = rdf.create(initial_url, proxy);
            }
        }
        if (proxy_host != null) {
            initial_url_rd.setProperty("URL_HOST", proxy_host);
        }
        setHeaders(initial_url_rd, headers);
        if (needsAuth && local_cookies != null) {
            initial_url_rd.setProperty("URL_Cookie", local_cookies);
        } else if (fullCookies != null && fullCookies.length() > 0) {
            initial_url_rd.setProperty("URL_Cookie", fullCookies);
        }
        if (only_if_modified) {
            String last_modified = getLocalString(LD_LAST_MODIFIED);
            String etag = getLocalString(LD_ETAG);
            if (last_modified != null) {
                initial_url_rd.setProperty("URL_If-Modified-Since", last_modified);
            }
            if (etag != null) {
                initial_url_rd.setProperty("URL_If-None-Match", etag);
            }
        }
        InputStream is = null;
        try {
            String content_charset = "UTF-8";
            ResourceDownloader mr_rd = null;
            if (initial_url.getProtocol().equalsIgnoreCase("file")) {
                // handle file://c:/ - map to file:/c:/
                String str = initial_url.toExternalForm();
                if (initial_url.getAuthority() != null) {
                    str = str.replaceFirst("://", ":/");
                }
                int pos = str.indexOf('?');
                if (pos != -1) {
                    str = str.substring(0, pos);
                }
                is = new FileInputStream(new File(new URL(str).toURI()));
            } else {
                if (proxy == null) {
                    initial_url_rd.setProperty("URL_Connect_Timeout", 10 * 1000);
                    initial_url_rd.setProperty("URL_Read_Timeout", 10 * 1000);
                }
                mr_rd = rdf.getMetaRefreshDownloader(initial_url_rd);
                try {
                    is = mr_rd.download();
                } catch (ResourceDownloaderException e) {
                    Long response = (Long) mr_rd.getProperty("URL_HTTP_Response");
                    if (response != null && response.longValue() == 304) {
                        return (new pageDetails(initial_url, initial_url, ""));
                    } else {
                        throw (e);
                    }
                }
                if (needsAuth) {
                    List cookies_list = (List) mr_rd.getProperty("URL_Set-Cookie");
                    List cookies_set = new ArrayList();
                    if (cookies_list != null) {
                        for (int i = 0; i < cookies_list.size(); i++) {
                            String[] cookies = ((String) cookies_list.get(i)).split(";");
                            for (int j = 0; j < cookies.length; j++) {
                                String cookie = cookies[j].trim();
                                if (cookie.indexOf('=') != -1) {
                                    cookies_set.add(cookie);
                                }
                            }
                        }
                    }
                // well, not much we can do with the cookies anyway as in general the ones
                // set are the ones missing/expired, not the existing ones. That is, we can't
                // deduce anything from the fact that a required cookie is not 'set' here
                // the most we could do is catch a server that explicitly deleted invalid
                // cookies by expiring it, but I doubt this is a common practice.
                // Also note the complexity of cookie syntax
                // Set-Cookie: old standard using expires=, new using MaxAge
                // Set-Cookie2:
                // Maybe use http://jcookie.sourceforge.net/ if needed
                }
                if (only_if_modified) {
                    String last_modified = extractProperty(mr_rd.getProperty("URL_Last-Modified"));
                    String etag = extractProperty(mr_rd.getProperty("URL_ETag"));
                    if (last_modified != null) {
                        setLocalString(LD_LAST_MODIFIED, last_modified);
                    }
                    if (etag != null) {
                        setLocalString(LD_ETAG, etag);
                    }
                }
                List cts = (List) mr_rd.getProperty("URL_Content-Type");
                if (cts != null && cts.size() > 0) {
                    String content_type = (String) cts.get(0);
                    int pos = content_type.toLowerCase().indexOf("charset");
                    if (pos != -1) {
                        content_type = content_type.substring(pos + 1);
                        pos = content_type.indexOf('=');
                        if (pos != -1) {
                            content_type = content_type.substring(pos + 1).trim();
                            pos = content_type.indexOf(';');
                            if (pos != -1) {
                                content_type = content_type.substring(0, pos).trim();
                            }
                            if (content_type.startsWith("\"")) {
                                content_type = content_type.substring(1).trim();
                            }
                            if (content_type.endsWith("\"")) {
                                content_type = content_type.substring(0, content_type.length() - 1).trim();
                            }
                            try {
                                if (Charset.isSupported(content_type)) {
                                    debugLog("charset: " + content_type);
                                    content_charset = content_type;
                                }
                            } catch (Throwable e) {
                                try {
                                    // handle lowercase 'utf-8' for example
                                    content_type = content_type.toUpperCase();
                                    if (Charset.isSupported(content_type)) {
                                        debugLog("charset: " + content_type);
                                        content_charset = content_type;
                                    }
                                } catch (Throwable f) {
                                    log("Content type '" + content_type + "' not supported", f);
                                }
                            }
                        }
                    }
                }
            }
            ByteArrayOutputStream baos = new ByteArrayOutputStream(8192);
            byte[] buffer = new byte[8192];
            while (true) {
                int len = is.read(buffer);
                if (len <= 0) {
                    break;
                }
                baos.write(buffer, 0, len);
            }
            byte[] data = baos.toByteArray();
            if (vuze_file) {
                try {
                    VuzeFileHandler vfh = VuzeFileHandler.getSingleton();
                    VuzeFile vf = vfh.loadVuzeFile(data);
                    vfh.handleFiles(new VuzeFile[] { vf }, VuzeFileComponent.COMP_TYPE_NONE);
                } catch (Throwable e) {
                    Debug.out(e);
                }
                return (new pageDetails(initial_url, initial_url, null));
            }
            String page = null;
            String content = new String(data, 0, Math.min(data.length, 2048), content_charset);
            String lc_content = content.toLowerCase();
            {
                // first look for xml charset
                // e.g. <?xml version="1.0" encoding="windows-1251" ?>
                int pos1 = lc_content.indexOf("<?xml");
                if (pos1 != -1) {
                    int pos2 = lc_content.indexOf("?>");
                    if (pos2 != -1) {
                        int pos3 = lc_content.indexOf("encoding", pos1);
                        if (pos3 != -1) {
                            pos3 = lc_content.indexOf("\"", pos3);
                        }
                        if (pos3 > pos1 && pos3 < pos2) {
                            pos3++;
                            int pos4 = lc_content.indexOf("\"", pos3);
                            if (pos4 > pos3 && pos4 < pos2) {
                                String encoding = content.substring(pos3, pos4).trim();
                                try {
                                    if (Charset.isSupported(encoding)) {
                                        debugLog("charset from xml tag: " + encoding);
                                        content_charset = encoding;
                                        // some feeds have crap at the start which makes pos2 mismatch for the above '?' - adjust if necessary
                                        int data_start = pos2;
                                        int max_skip = 64;
                                        while (data[data_start] != '?' && max_skip-- > 0) {
                                            data_start++;
                                        }
                                        page = content.substring(0, pos3) + "utf-8" + content.substring(pos4, pos2) + new String(data, data_start, data.length - data_start, content_charset);
                                    }
                                } catch (Throwable e) {
                                    log("Content type '" + encoding + "' not supported", e);
                                }
                            }
                        }
                    }
                }
            }
            if (page == null) {
                // next look for http-equiv charset
                // e.g. <meta http-equiv="Content-Type" content="text/html; charset=windows-1251" />
                int pos = 0;
                while (true) {
                    int pos1 = lc_content.indexOf("http-equiv", pos);
                    if (pos1 != -1) {
                        int pos2 = lc_content.indexOf(">", pos1);
                        if (pos2 != -1) {
                            int pos3 = lc_content.indexOf("charset", pos1);
                            if (pos3 != -1 && pos3 < pos2) {
                                pos3 = lc_content.indexOf("=", pos3);
                                if (pos3 != -1) {
                                    pos3++;
                                    int pos4 = lc_content.indexOf("\"", pos3);
                                    if (pos4 != -1) {
                                        int pos5 = lc_content.indexOf(";", pos3);
                                        if (pos5 != -1 && pos5 < pos4) {
                                            pos4 = pos5;
                                        }
                                        String encoding = content.substring(pos3, pos4).trim();
                                        try {
                                            if (Charset.isSupported(encoding)) {
                                                debugLog("charset from http-equiv : " + encoding);
                                                content_charset = encoding;
                                                // some feeds have crap at the start which makes pos2 mismatch for the above '?' - adjust if necessary
                                                int data_start = pos2;
                                                int max_skip = 64;
                                                while (data[data_start] != '?' && max_skip-- > 0) {
                                                    data_start++;
                                                }
                                                page = content.substring(0, pos3) + "utf-8" + content.substring(pos4, pos2) + new String(data, data_start, data.length - data_start, content_charset);
                                            }
                                        } catch (Throwable e) {
                                            log("Content type '" + encoding + "' not supported", e);
                                        }
                                        break;
                                    }
                                }
                            }
                            pos = pos2;
                        } else {
                            break;
                        }
                    } else {
                        break;
                    }
                }
            }
            if (page == null) {
                page = new String(data, content_charset);
            }
            debugLog("page:");
            debugLog(page);
            try {
                Matcher m = baseTagPattern.matcher(page);
                if (m.find()) {
                    basePage = m.group(1);
                    debugLog("base_page: " + basePage);
                }
            } catch (Exception e) {
            // No BASE tag in the page
            }
            URL final_url = initial_url;
            if (mr_rd != null) {
                URL x = (URL) mr_rd.getProperty("URL_URL");
                if (x != null) {
                    final_url = x;
                }
            }
            return (new pageDetails(initial_url, final_url, page));
        } finally {
            if (is != null) {
                is.close();
            }
        }
    } catch (SearchException e) {
        throw (e);
    } catch (Throwable e) {
        // e.printStackTrace();
        debugLog("Failed to load page: " + Debug.getNestedExceptionMessageAndStack(e));
        throw (new SearchException("Failed to load page", e));
    } finally {
        TorrentUtils.setTLSDescription(null);
    }
}

Example 7 with ResourceDownloaderFactory

use of com.biglybt.pif.utils.resourcedownloader.ResourceDownloaderFactory in project BiglyBT by BiglySoftware.

the class PlatformMessenger method downloadURLSupport.

private static Object[] downloadURLSupport(Proxy proxy, String proxy_host, URL url, String postData) throws Throwable {
    ResourceDownloaderFactory rdf = StaticUtilities.getResourceDownloaderFactory();
    ResourceDownloader rd;
    if (proxy == null) {
        rd = rdf.create(url, postData);
    } else {
        rd = rdf.create(url, postData, proxy);
    }
    if (proxy_host != null) {
        rd.setProperty("URL_HOST", proxy_host);
    }
    rd.setProperty("URL_Connection", "Keep-Alive");
    rd = rdf.getRetryDownloader(rd, 3);
    // We could report percentage to listeners, but there's no need to atm
    // rd.addListener(new ResourceDownloaderListener() {
    // 
    // public void reportPercentComplete(ResourceDownloader downloader,
    // int percentage) {
    // }
    // 
    // public void reportActivity(ResourceDownloader downloader, String activity) {
    // }
    // 
    // public void failed(ResourceDownloader downloader,
    // ResourceDownloaderException e) {
    // }
    // 
    // public boolean completed(ResourceDownloader downloader, InputStream data) {
    // return true;
    // }
    // });
    InputStream is = rd.download();
    byte[] data;
    try {
        int length = is.available();
        data = new byte[length];
        is.read(data);
    } finally {
        is.close();
    }
    String s = new String(data, "UTF8");
    Map mapAllReplies = JSONUtils.decodeJSON(s);
    List listReplies = MapUtils.getMapList(mapAllReplies, "replies", null);
    return (new Object[] { s, listReplies });
}

Example 8 with ResourceDownloaderFactory

use of com.biglybt.pif.utils.resourcedownloader.ResourceDownloaderFactory in project BiglyBT by BiglySoftware.

the class SubscriptionSchedulerImpl method download.

@Override
public void download(final Subscription subs, final SubscriptionResult original_result) {
    String download_link = original_result.getDownloadLink();
    if (download_link == null) {
        log(subs.getName() + ": can't download " + original_result.getID() + " as no direct download link available");
        return;
    }
    final String key = subs.getID() + ":" + original_result.getID();
    final String dl = download_link;
    synchronized (active_result_downloaders) {
        if (active_result_downloaders.contains(key)) {
            return;
        }
        log(subs.getName() + ": queued result for download - " + original_result.getID() + "/" + download_link);
        active_result_downloaders.add(key);
        result_downloader.run(new AERunnable() {

            @Override
            public void runSupport() {
                // need to fix up to the latest history due to the lazy nature of things :(
                SubscriptionResult result = subs.getHistory().getResult(original_result.getID());
                boolean success = false;
                try {
                    if (result == null) {
                        log(subs.getName() + ": result has been deleted - " + original_result.getID());
                        success = true;
                    } else if (result.getRead()) {
                        log(subs.getName() + ": result already marked as read, skipping - " + result.getID());
                        success = true;
                    } else {
                        boolean retry = true;
                        boolean use_ref = subs.getHistory().getDownloadWithReferer();
                        boolean tried_ref_switch = false;
                        while (retry) {
                            retry = false;
                            try {
                                TorrentUtils.setTLSDescription("Subscription: " + subs.getName());
                                URL original_url = new URL(dl);
                                PluginProxy plugin_proxy = null;
                                if (dl.startsWith("tor:")) {
                                    String target_resource = dl.substring(4);
                                    original_url = new URL(target_resource);
                                    Map<String, Object> options = new HashMap<>();
                                    options.put(AEProxyFactory.PO_PEER_NETWORKS, new String[] { AENetworkClassifier.AT_TOR });
                                    plugin_proxy = AEProxyFactory.getPluginProxy("Subscription result download of '" + target_resource + "'", original_url, options, true);
                                    if (plugin_proxy == null) {
                                        throw (new Exception("No Tor plugin proxy available for '" + dl + "'"));
                                    }
                                }
                                URL current_url = plugin_proxy == null ? original_url : plugin_proxy.getURL();
                                Torrent torrent = null;
                                try {
                                    while (true) {
                                        try {
                                            ResourceDownloaderFactory rdf = StaticUtilities.getResourceDownloaderFactory();
                                            ResourceDownloader url_rd = rdf.create(current_url, plugin_proxy == null ? null : plugin_proxy.getProxy());
                                            if (plugin_proxy != null) {
                                                url_rd.setProperty("URL_HOST", plugin_proxy.getURLHostRewrite() + (current_url.getPort() == -1 ? "" : (":" + current_url.getPort())));
                                            }
                                            String referer = use_ref ? subs.getReferer() : null;
                                            UrlUtils.setBrowserHeaders(url_rd, referer);
                                            Engine engine = subs.getEngine();
                                            if (engine instanceof WebEngine) {
                                                WebEngine we = (WebEngine) engine;
                                                if (we.isNeedsAuth()) {
                                                    String cookies = we.getCookies();
                                                    if (cookies != null && cookies.length() > 0) {
                                                        url_rd.setProperty("URL_Cookie", cookies);
                                                    }
                                                }
                                            }
                                            ResourceDownloader mr_rd = rdf.getMetaRefreshDownloader(url_rd);
                                            InputStream is = mr_rd.download();
                                            torrent = new TorrentImpl(TOTorrentFactory.deserialiseFromBEncodedInputStream(is));
                                            break;
                                        } catch (Throwable e) {
                                            if (plugin_proxy == null) {
                                                plugin_proxy = AEProxyFactory.getPluginProxy("Subscription result download", original_url);
                                                if (plugin_proxy != null) {
                                                    current_url = plugin_proxy.getURL();
                                                    continue;
                                                }
                                            }
                                            throw (e);
                                        }
                                    }
                                } finally {
                                    if (plugin_proxy != null) {
                                        plugin_proxy.setOK(torrent != null);
                                    }
                                }
                                byte[] hash = torrent.getHash();
                                // PlatformTorrentUtils.setContentTitle(torrent, torr );
                                DownloadManager dm = PluginInitializer.getDefaultInterface().getDownloadManager();
                                Download download;
                                // if we're assigning a tag/networks then we need to add it stopped in case the tag has any pre-start actions (e.g. set initial save location)
                                // this is because the assignments are done in SubscriptionManagerImpl on the download(willbe)added event
                                boolean stop_override = subs.getTagID() >= 0 || subs.getHistory().getDownloadNetworks() != null;
                                boolean auto_start = manager.shouldAutoStart(torrent);
                                manager.addPrepareTrigger(hash, new Subscription[] { subs }, new SubscriptionResult[] { result });
                                try {
                                    if (auto_start && !stop_override) {
                                        download = dm.addDownload(torrent);
                                    } else {
                                        download = dm.addDownloadStopped(torrent, null, null);
                                    }
                                } finally {
                                    manager.removePrepareTrigger(hash);
                                }
                                log(subs.getName() + ": added download " + download.getName() + ": auto-start=" + auto_start);
                                // maybe remove this as should be actioned in the trigger?
                                manager.prepareDownload(download, new Subscription[] { subs }, new SubscriptionResult[] { result });
                                subs.addAssociation(hash);
                                if (auto_start && stop_override) {
                                    download.restart();
                                }
                                result.setRead(true);
                                success = true;
                                if (tried_ref_switch) {
                                    subs.getHistory().setDownloadWithReferer(use_ref);
                                }
                            } catch (Throwable e) {
                                log(subs.getName() + ": Failed to download result " + dl, e);
                                if (e instanceof TOTorrentException && !tried_ref_switch) {
                                    use_ref = !use_ref;
                                    tried_ref_switch = true;
                                    retry = true;
                                    log(subs.getName() + ": Retrying " + (use_ref ? "with referer" : "without referer"));
                                }
                            } finally {
                                TorrentUtils.setTLSDescription(null);
                            }
                        }
                    }
                } finally {
                    try {
                        if (!success) {
                            if (dl.startsWith("azplug:") || dl.startsWith("chat:")) {
                                // whatever the outcome these have been handled async
                                result.setRead(true);
                            } else {
                                int rad = manager.getAutoDownloadMarkReadAfterDays();
                                if (rad > 0) {
                                    long rad_millis = rad * 24 * 60 * 60 * 1000L;
                                    long time_found = result.getTimeFound();
                                    if (time_found > 0 && time_found + rad_millis < SystemTime.getCurrentTime()) {
                                        log(subs.getName() + ": result expired, marking as read - " + result.getID());
                                        result.setRead(true);
                                    }
                                }
                            }
                        }
                    } catch (Throwable e) {
                        Debug.out(e);
                    }
                    synchronized (active_result_downloaders) {
                        active_result_downloaders.remove(key);
                    }
                    calculateSchedule();
                }
            }
        });
    }
}

Example 9 with ResourceDownloaderFactory

use of com.biglybt.pif.utils.resourcedownloader.ResourceDownloaderFactory in project BiglyBT by BiglySoftware.

the class MagnetPlugin method doSecondaryLookup.

protected void doSecondaryLookup(final MagnetPluginProgressListener listener, final Object[] result, byte[] hash, Set<String> networks_enabled, String args) {
    if (listener != null) {
        listener.reportActivity(getMessageText("report.secondarylookup", null));
    }
    PluginProxy plugin_proxy = null;
    try {
        URL original_sl_url = new URL(SECONDARY_LOOKUP + "magnetLookup?hash=" + Base32.encode(hash) + (args.length() == 0 ? "" : ("&args=" + UrlUtils.encode(args))));
        URL sl_url = original_sl_url;
        Proxy proxy = null;
        if (!networks_enabled.contains(AENetworkClassifier.AT_PUBLIC)) {
            plugin_proxy = AEProxyFactory.getPluginProxy("secondary magnet lookup", sl_url);
            if (plugin_proxy == null) {
                throw (new NoRouteToHostException("plugin proxy unavailable"));
            } else {
                proxy = plugin_proxy.getProxy();
                sl_url = plugin_proxy.getURL();
            }
        }
        ResourceDownloaderFactory rdf = plugin_interface.getUtilities().getResourceDownloaderFactory();
        ResourceDownloader rd;
        if (proxy == null) {
            rd = rdf.create(sl_url);
        } else {
            rd = rdf.create(sl_url, proxy);
            rd.setProperty("URL_HOST", original_sl_url.getHost());
        }
        final PluginProxy f_pp = plugin_proxy;
        rd.addListener(new ResourceDownloaderAdapter() {

            @Override
            public boolean completed(ResourceDownloader downloader, InputStream data) {
                try {
                    if (listener != null) {
                        listener.reportActivity(getMessageText("report.secondarylookup.ok", null));
                    }
                    synchronized (result) {
                        result[0] = data;
                    }
                    return (true);
                } finally {
                    complete();
                }
            }

            @Override
            public void failed(ResourceDownloader downloader, ResourceDownloaderException e) {
                try {
                    synchronized (result) {
                        result[0] = e;
                    }
                    if (listener != null) {
                        listener.reportActivity(getMessageText("report.secondarylookup.fail"));
                    }
                } finally {
                    complete();
                }
            }

            private void complete() {
                if (f_pp != null) {
                    // outcome doesn't really indicate whether the result was wholesome
                    f_pp.setOK(true);
                }
            }
        });
        rd.asyncDownload();
    } catch (Throwable e) {
        if (plugin_proxy != null) {
            // tidy up, no indication of proxy badness here so say its ok
            plugin_proxy.setOK(true);
        }
        if (listener != null) {
            listener.reportActivity(getMessageText("report.secondarylookup.fail", Debug.getNestedExceptionMessage(e)));
        }
    }
}

Example 10 with ResourceDownloaderFactory

use of com.biglybt.pif.utils.resourcedownloader.ResourceDownloaderFactory in project BiglyBT by BiglySoftware.

the class PlatformManagerUpdateChecker method checkForUpdate.

@Override
public void checkForUpdate(final UpdateChecker checker) {
    try {
        SFPluginDetails sf_details = SFPluginDetailsLoaderFactory.getSingleton().getPluginDetails(plugin_interface.getPluginID());
        String current_version = plugin_interface.getPluginVersion();
        if (Logger.isEnabled())
            Logger.log(new LogEvent(LOGID, "PlatformManager:Win32 update check starts: current = " + current_version));
        boolean current_az_is_cvs = Constants.isCVSVersion();
        String sf_plugin_version = sf_details.getVersion();
        String sf_comp_version = sf_plugin_version;
        if (current_az_is_cvs) {
            String sf_cvs_version = sf_details.getCVSVersion();
            if (sf_cvs_version.length() > 0) {
                // sf cvs version ALWAYS entry in _CVS
                sf_plugin_version = sf_cvs_version;
                sf_comp_version = sf_plugin_version.substring(0, sf_plugin_version.length() - 4);
            }
        }
        String target_version = null;
        if (sf_comp_version.length() == 0 || !Character.isDigit(sf_comp_version.charAt(0))) {
            if (Logger.isEnabled())
                Logger.log(new LogEvent(LOGID, LogEvent.LT_WARNING, "PlatformManager:Win32 no valid version to check against (" + sf_comp_version + ")"));
        } else if (Constants.compareVersions(current_version, sf_comp_version) < 0) {
            target_version = sf_comp_version;
        }
        checker.reportProgress("Win32: current = " + current_version + ", latest = " + sf_comp_version);
        if (Logger.isEnabled())
            Logger.log(new LogEvent(LOGID, "PlatformManager:Win32 update required = " + (target_version != null)));
        if (target_version != null) {
            String target_download = sf_details.getDownloadURL();
            if (current_az_is_cvs) {
                String sf_cvs_version = sf_details.getCVSVersion();
                if (sf_cvs_version.length() > 0) {
                    target_download = sf_details.getCVSDownloadURL();
                }
            }
            ResourceDownloaderFactory rdf = ResourceDownloaderFactoryImpl.getSingleton();
            ResourceDownloader direct_rdl = rdf.create(new URL(target_download));
            String torrent_download = Constants.URL_PLUGINS_TORRENT_BASE;
            int slash_pos = target_download.lastIndexOf("/");
            if (slash_pos == -1) {
                torrent_download += target_download;
            } else {
                torrent_download += target_download.substring(slash_pos + 1);
            }
            torrent_download += ".torrent";
            if (I2PHelpers.isI2PInstalled()) {
                torrent_download += "?i2p=1";
            }
            ResourceDownloader torrent_rdl = rdf.create(new URL(torrent_download));
            torrent_rdl = rdf.getSuffixBasedDownloader(torrent_rdl);
            // create an alternate downloader with torrent attempt first
            ResourceDownloader alternate_rdl = rdf.getAlternateDownloader(new ResourceDownloader[] { torrent_rdl, direct_rdl });
            // get size here so it is cached
            rdf.getTimeoutDownloader(rdf.getRetryDownloader(alternate_rdl, RD_SIZE_RETRIES), RD_SIZE_TIMEOUT).getSize();
            List update_desc = new ArrayList();
            List desc_lines = HTMLUtils.convertHTMLToText("", sf_details.getDescription());
            update_desc.addAll(desc_lines);
            List comment_lines = HTMLUtils.convertHTMLToText("    ", sf_details.getComment());
            update_desc.addAll(comment_lines);
            String[] update_d = new String[update_desc.size()];
            update_desc.toArray(update_d);
            final Update update = checker.addUpdate(UPDATE_NAME, update_d, current_version, target_version, alternate_rdl, Update.RESTART_REQUIRED_YES);
            update.setDescriptionURL(sf_details.getInfoURL());
            alternate_rdl.addListener(new ResourceDownloaderAdapter() {

                @Override
                public boolean completed(final ResourceDownloader downloader, InputStream data) {
                    installUpdate(checker, update, downloader, data);
                    return (true);
                }

                @Override
                public void failed(ResourceDownloader downloader, ResourceDownloaderException e) {
                    // Debug.out( downloader.getName() + " failed", e );
                    update.complete(false);
                }
            });
        }
    } catch (Throwable e) {
        Debug.printStackTrace(e);
        checker.reportProgress("Failed to load plugin details for the platform manager: " + Debug.getNestedExceptionMessage(e));
        checker.failed();
    } finally {
        checker.completed();
    }
}