private void handleRemoveFeedPost(Request request, HttpServletResponse httpServletResponse)
throws Exception {
LOG.info("removing feed");
User user = userHelpers.getUser(request);
try {
if (user == null) {
LOG.error("User not found");
return;
}
String feedId = request.getParameter(PARAM_FEED_ID);
LOG.info(String.format("Removing feed %s for user %s", feedId, user));
// ttt1 add some validation; probably best try to actually get data, set the title, ...
if (feedId == null || feedId.equals("")) {
LOG.error("feed not specified");
// ttt1 show some error
return;
}
if (user.feedIds.remove(
feedId)) { // ttt2 clean up the global feed table; that's probably better done if nobody
// accesses a feed for 3 months or so
userDb.updateFeeds(user);
LOG.info(String.format("Removed feed %s for user %s", feedId, user));
} else {
LOG.info(String.format("No feed found with ID %s for user %s", feedId, user));
}
} finally {
httpServletResponse.sendRedirect(PATH_FEED_ADMIN);
}
}
// !!! IDEA reports this as unused, but it is called from JSP
public static FeedInfo getFeedInfo(String feedPath) {
if (feedPath.startsWith(PATH_FEED + "/")) {
try {
if (feedPath.endsWith("/")) {
feedPath = feedPath.substring(0, feedPath.length() - 1);
}
int k = PATH_FEED.length() + 1;
int p = feedPath.indexOf('/', k);
return p >= 0
? new FeedInfo(feedPath.substring(k, p), Integer.parseInt(feedPath.substring(p + 1)))
: new FeedInfo(feedPath.substring(k), -1);
} catch (Exception e) {
LOG.error("Exception trying to parse the feed info", e);
}
}
LOG.error("Invalid path from feed: " + feedPath);
return new FeedInfo("INVALID", -1);
}
private void handleAddFeedPost(Request request, HttpServletResponse httpServletResponse)
throws Exception {
LOG.info("adding feed");
User user = userHelpers.getUser(request);
try {
if (user == null) {
LOG.error("User not found");
return;
}
String url = request.getParameter(PARAM_NEW_FEED_URL);
// ttt1 add some validation; probably best try to actually get data, set the title, ...
if (url == null || url.equals("")) {
LOG.error("New feed not specified");
// ttt1 show some error
return;
}
MessageDigest digest = MessageDigest.getInstance("MD5");
String feedId = PrintUtils.byteArrayAsUrlString(digest.digest(url.getBytes("UTF-8")));
feedId = feedId.substring(0, Config.getConfig().feedIdSize);
Feed feed = feedDb.get(feedId);
if (feed == null) {
feed = new Feed(feedId, url);
feedDb.add(feed);
}
if (user.feedIds.contains(feedId)) {
LOG.error(String.format("Trying to add existing feed %s to user %s", feedId, user));
} else {
user.feedIds.add(feedId);
userDb.updateFeeds(user);
}
} finally {
httpServletResponse.sendRedirect(PATH_FEED_ADMIN);
}
}
@Override
public void doHandle(
String target,
Request request,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse)
throws IOException, ServletException {
LOG.info("handling " + target);
// !!! doHandle() is called twice for a request when using redirectiion, first time with
// request.getPathInfo()
// set to the URI and target set to the path, then with request.getPathInfo() set to null and
// target set to the .jsp
try {
// request.setHandled(true);
boolean secured;
if (request.getScheme().equals("https")) {
secured = true;
} else if (request.getScheme().equals("http")) {
secured = false;
} else {
httpServletResponse
.getWriter()
.println(
String.format(
"<h1>Unknown scheme %s at %s</h1>",
request.getScheme(), request.getUri().getDecodedPath()));
return;
}
if (request.getMethod().equals("GET")) {
if (isInJar || target.endsWith(".jsp")) {
// !!! when not in jar there's no need to do anything about params if it's not a .jsp,
// as this will get called again for the corresponding .jsp
if (prepareForJspGet(target, request, httpServletResponse, secured)) {
return;
}
}
if (target.startsWith(PATH_OPEN_ARTICLE)) {
handleOpenArticle(request, httpServletResponse, target);
return;
}
super.doHandle(target, request, httpServletRequest, httpServletResponse);
LOG.info("handling of " + target + " went to super");
// httpServletResponse.setDateHeader("Date", System.currentTimeMillis()); //ttt2 review
// these, probably not use
// httpServletResponse.setDateHeader("Expires", System.currentTimeMillis() + 60000);
return;
}
if (request.getMethod().equals("POST")) {
if (request.getUri().getDecodedPath().equals(PATH_LOGIN)) {
handleLoginPost(request, httpServletResponse, secured);
} else if (request.getUri().getDecodedPath().equals(PATH_SIGNUP)) {
handleSignupPost(request, httpServletResponse);
} else if (request.getUri().getDecodedPath().equals(PATH_CHANGE_PASSWORD)) {
handleChangePasswordPost(request, httpServletResponse);
} else if (request.getUri().getDecodedPath().equals(PATH_UPDATE_FEED_LIST)) {
handleUpdateFeedListPost(request, httpServletResponse);
} else if (request.getUri().getDecodedPath().equals(PATH_ADD_FEED)) {
handleAddFeedPost(request, httpServletResponse);
} else if (request.getUri().getDecodedPath().equals(PATH_REMOVE_FEED)) {
handleRemoveFeedPost(request, httpServletResponse);
} else if (request.getUri().getDecodedPath().equals(PATH_CHANGE_SETTINGS)) {
handleChangeSettingsPost(request, httpServletResponse);
}
}
/*{ // for tests only;
httpServletResponse.getWriter().println(String.format("<h1>Unable to process request %s</h1>",
request.getUri().getDecodedPath()));
request.setHandled(true);
}*/
} catch (Exception e) {
LOG.error("Error processing request", e);
try {
// redirectToError(e.toString(), request, httpServletResponse); //!!! redirectToError leads
// to infinite loop, probably related to
// the fact that we get 2 calls for a regular request when redirecting
httpServletResponse
.getWriter()
.println(
String.format(
"<h1>Unable to process request %s</h1>", // ttt1 generate some HTML
request.getUri().getDecodedPath()));
request.setHandled(true);
} catch (Exception e1) {
LOG.error("Error redirecting", e1);
}
}
}