private boolean handleExceptionalInteractions(
final Modal modal, final Interaction inter, final String json) {
boolean handled = false;
Map<String, Object> map;
Boolean notify;
switch (inter) {
case EXCEPTION:
handleException(json);
handled = true;
break;
case UNEXPECTEDSTATERESET:
log.debug("Handling unexpected state reset.");
backupSettings();
handleReset();
Events.syncModel(this.model);
// fall through because this should be done in both cases:
case UNEXPECTEDSTATEREFRESH:
try {
map = jsonToMap(json);
} catch (Exception e) {
log.error("Bad json payload in inter '{}': {}", inter, json);
return true;
}
notify = (Boolean) map.get("notify");
if (notify) {
try {
lanternFeedback.submit((String) map.get("report"), this.model.getProfile().getEmail());
} catch (Exception e) {
log.error(
"Could not submit unexpected state report: {}\n {}",
e.getMessage(),
(String) map.get("report"));
}
}
handled = true;
break;
}
return handled;
}
protected void processRequest(final HttpServletRequest req, final HttpServletResponse resp) {
LanternUtils.addCSPHeader(resp);
final String uri = req.getRequestURI();
log.debug("Received URI: {}", uri);
final String interactionStr = StringUtils.substringAfterLast(uri, "/");
if (StringUtils.isBlank(interactionStr)) {
log.debug("blank interaction");
HttpUtils.sendClientError(resp, "blank interaction");
return;
}
log.debug("Headers: " + HttpUtils.getRequestHeaders(req));
if (!"XMLHttpRequest".equals(req.getHeader("X-Requested-With"))) {
log.debug("invalid X-Requested-With");
HttpUtils.sendClientError(resp, "invalid X-Requested-With");
return;
}
if (!SecurityUtils.constantTimeEquals(model.getXsrfToken(), req.getHeader("X-XSRF-TOKEN"))) {
log.debug(
"X-XSRF-TOKEN wrong: got {} expected {}",
req.getHeader("X-XSRF-TOKEN"),
model.getXsrfToken());
HttpUtils.sendClientError(resp, "invalid X-XSRF-TOKEN");
return;
}
final int cl = req.getContentLength();
String json = "";
if (cl > 0) {
try {
json = IOUtils.toString(req.getInputStream());
} catch (final IOException e) {
log.error("Could not parse json?");
}
}
log.debug("Body: '" + json + "'");
final Interaction inter = Interaction.valueOf(interactionStr.toUpperCase());
if (inter == Interaction.CLOSE) {
if (handleClose(json)) {
return;
}
}
if (inter == Interaction.URL) {
final String url = JsonUtils.getValueFromJson("url", json);
if (!StringUtils.startsWith(url, "http://") && !StringUtils.startsWith(url, "https://")) {
log.error("http(s) url expected, got {}", url);
HttpUtils.sendClientError(resp, "http(s) urls only");
return;
}
try {
new URL(url);
} catch (MalformedURLException e) {
log.error("invalid url: {}", url);
HttpUtils.sendClientError(resp, "invalid url");
return;
}
final String cmd;
if (SystemUtils.IS_OS_MAC_OSX) {
cmd = "open";
} else if (SystemUtils.IS_OS_LINUX) {
cmd = "gnome-open";
} else if (SystemUtils.IS_OS_WINDOWS) {
cmd = "start";
} else {
log.error("unsupported OS");
HttpUtils.sendClientError(resp, "unsupported OS");
return;
}
try {
if (SystemUtils.IS_OS_WINDOWS) {
// On Windows, we have to quote the url to allow for
// e.g. ? and & characters in query string params.
// To quote the url, we supply a dummy first argument,
// since otherwise start treats the first argument as a
// title for the new console window when it's quoted.
LanternUtils.runCommand(cmd, "\"\"", "\"" + url + "\"");
} else {
// on OS X and Linux, special characters in the url make
// it through this call without our having to quote them.
LanternUtils.runCommand(cmd, url);
}
} catch (IOException e) {
log.error("open url failed");
HttpUtils.sendClientError(resp, "open url failed");
return;
}
return;
}
final Modal modal = this.model.getModal();
log.debug(
"processRequest: modal = {}, inter = {}, mode = {}",
modal,
inter,
this.model.getSettings().getMode());
if (handleExceptionalInteractions(modal, inter, json)) {
return;
}
Modal switchTo = null;
try {
// XXX a map would make this more robust
switchTo = Modal.valueOf(interactionStr);
} catch (IllegalArgumentException e) {
}
if (switchTo != null && switchModals.contains(switchTo)) {
if (!switchTo.equals(modal)) {
if (!switchModals.contains(modal)) {
this.internalState.setLastModal(modal);
}
Events.syncModal(model, switchTo);
}
return;
}
switch (modal) {
case welcome:
this.model.getSettings().setMode(Mode.unknown);
switch (inter) {
case GET:
log.debug("Setting get mode");
handleSetModeWelcome(Mode.get);
break;
case GIVE:
log.debug("Setting give mode");
handleSetModeWelcome(Mode.give);
break;
}
break;
case authorize:
log.debug("Processing authorize modal...");
this.internalState.setModalCompleted(Modal.authorize);
this.internalState.advanceModal(null);
break;
case finished:
this.internalState.setCompletedTo(Modal.finished);
switch (inter) {
case CONTINUE:
log.debug("Processing continue");
this.model.setShowVis(true);
Events.sync(SyncPath.SHOWVIS, true);
this.internalState.setModalCompleted(Modal.finished);
this.internalState.advanceModal(null);
break;
case SET:
log.debug("Processing set in finished modal...applying JSON\n{}", json);
applyJson(json);
break;
default:
log.error("Did not handle interaction {} for modal {}", inter, modal);
HttpUtils.sendClientError(
resp, "Interaction not handled for modal: " + modal + " and interaction: " + inter);
break;
}
break;
case firstInviteReceived:
log.error("Processing invite received...");
break;
case lanternFriends:
this.internalState.setCompletedTo(Modal.lanternFriends);
switch (inter) {
case FRIEND:
this.friender.addFriend(email(json));
break;
case REJECT:
this.friender.removeFriend(email(json));
break;
case CONTINUE:
// This dialog always passes continue as of this writing and
// not close.
case CLOSE:
log.debug("Processing continue/close for friends dialog");
if (this.model.isSetupComplete()) {
Events.syncModal(model, Modal.none);
} else {
this.internalState.setModalCompleted(Modal.lanternFriends);
this.internalState.advanceModal(null);
}
break;
default:
log.error("Did not handle interaction {} for modal {}", inter, modal);
HttpUtils.sendClientError(
resp, "Interaction not handled for modal: " + modal + " and interaction: " + inter);
break;
}
break;
case none:
break;
case notInvited:
switch (inter) {
case RETRY:
Events.syncModal(model, Modal.authorize);
break;
// not currently implemented:
// case REQUESTINVITE:
// Events.syncModal(model, Modal.requestInvite);
// break;
default:
log.error("Unexpected interaction: " + inter);
break;
}
break;
case proxiedSites:
this.internalState.setCompletedTo(Modal.proxiedSites);
switch (inter) {
case CONTINUE:
if (this.model.isSetupComplete()) {
Events.syncModal(model, Modal.none);
} else {
this.internalState.setModalCompleted(Modal.proxiedSites);
this.internalState.advanceModal(null);
}
break;
case LANTERNFRIENDS:
log.debug("Processing lanternFriends from proxiedSites");
Events.syncModal(model, Modal.lanternFriends);
break;
case SET:
if (!model.getSettings().isSystemProxy()) {
String msg =
"Because you are using manual proxy "
+ "configuration, you may have to restart your "
+ "browser for your updated proxied sites list "
+ "to take effect.";
model.addNotification(msg, MessageType.info, 30);
Events.sync(SyncPath.NOTIFICATIONS, model.getNotifications());
}
applyJson(json);
break;
case SETTINGS:
log.debug("Processing settings from proxiedSites");
Events.syncModal(model, Modal.settings);
break;
default:
log.error("Did not handle interaction {} for modal {}", inter, modal);
HttpUtils.sendClientError(resp, "unexpected interaction for proxied sites");
break;
}
break;
case requestInvite:
log.info("Processing request invite");
switch (inter) {
case CANCEL:
this.internalState.setModalCompleted(Modal.requestInvite);
this.internalState.advanceModal(Modal.notInvited);
break;
case CONTINUE:
applyJson(json);
this.internalState.setModalCompleted(Modal.proxiedSites);
// TODO: need to do something here
this.internalState.advanceModal(null);
break;
default:
log.error("Did not handle interaction {} for modal {}", inter, modal);
HttpUtils.sendClientError(resp, "unexpected interaction for request invite");
break;
}
break;
case requestSent:
log.debug("Process request sent");
break;
case settings:
switch (inter) {
case GET:
log.debug("Setting get mode");
// Only deal with a mode change if the mode has changed!
if (modelService.getMode() == Mode.give) {
// Break this out because it's set in the subsequent
// setMode call
final boolean everGet = model.isEverGetMode();
this.modelService.setMode(Mode.get);
if (!everGet) {
// need to do more setup to switch to get mode from
// give mode
model.setSetupComplete(false);
model.setModal(Modal.proxiedSites);
Events.syncModel(model);
} else {
// This primarily just triggers a setup complete event,
// which triggers connecting to proxies, setting up
// the local system proxy, etc.
model.setSetupComplete(true);
}
}
break;
case GIVE:
log.debug("Setting give mode");
this.modelService.setMode(Mode.give);
break;
case CLOSE:
log.debug("Processing settings close");
Events.syncModal(model, Modal.none);
break;
case SET:
log.debug("Processing set in setting...applying JSON\n{}", json);
applyJson(json);
break;
case RESET:
log.debug("Processing reset");
Events.syncModal(model, Modal.confirmReset);
break;
case PROXIEDSITES:
log.debug("Processing proxied sites in settings");
Events.syncModal(model, Modal.proxiedSites);
break;
case LANTERNFRIENDS:
log.debug("Processing friends in settings");
Events.syncModal(model, Modal.lanternFriends);
break;
default:
log.error("Did not handle interaction {} for modal {}", inter, modal);
HttpUtils.sendClientError(
resp, "Interaction not handled for modal: " + modal + " and interaction: " + inter);
break;
}
break;
case settingsLoadFailure:
switch (inter) {
case RETRY:
modelIo.reload();
Events.sync(SyncPath.NOTIFICATIONS, model.getNotifications());
Events.syncModal(model, model.getModal());
break;
case RESET:
backupSettings();
Events.syncModal(model, Modal.welcome);
break;
default:
log.error("Did not handle interaction {} for modal {}", inter, modal);
break;
}
break;
case systemProxy:
this.internalState.setCompletedTo(Modal.systemProxy);
switch (inter) {
case CONTINUE:
log.debug("Processing continue in systemProxy", json);
applyJson(json);
Events.sync(SyncPath.SYSTEMPROXY, model.getSettings().isSystemProxy());
this.internalState.setModalCompleted(Modal.systemProxy);
this.internalState.advanceModal(null);
break;
default:
log.error("Did not handle interaction {} for modal {}", inter, modal);
HttpUtils.sendClientError(resp, "error setting system proxy pref");
break;
}
break;
case updateAvailable:
switch (inter) {
case CLOSE:
this.internalState.setModalCompleted(Modal.updateAvailable);
this.internalState.advanceModal(null);
break;
default:
log.error("Did not handle interaction {} for modal {}", inter, modal);
break;
}
break;
case authorizeLater:
log.error("Did not handle interaction {} for modal {}", inter, modal);
break;
case confirmReset:
log.debug("Handling confirm reset interaction");
switch (inter) {
case CANCEL:
log.debug("Processing cancel");
Events.syncModal(model, Modal.settings);
break;
case RESET:
handleReset();
Events.syncModel(this.model);
break;
default:
log.error("Did not handle interaction {} for modal {}", inter, modal);
HttpUtils.sendClientError(
resp, "Interaction not handled for modal: " + modal + " and interaction: " + inter);
}
break;
case about: // fall through on purpose
case sponsor:
switch (inter) {
case CLOSE:
Events.syncModal(model, this.internalState.getLastModal());
break;
default:
HttpUtils.sendClientError(resp, "invalid interaction " + inter);
}
break;
case contact:
switch (inter) {
case CONTINUE:
String msg;
MessageType messageType;
try {
lanternFeedback.submit(json, this.model.getProfile().getEmail());
msg = "Thank you for contacting Lantern.";
messageType = MessageType.info;
} catch (Exception e) {
log.error("Error submitting contact form: {}", e);
msg = "Error sending message. Please check your " + "connection and try again.";
messageType = MessageType.error;
}
model.addNotification(msg, messageType, 30);
Events.sync(SyncPath.NOTIFICATIONS, model.getNotifications());
// fall through because this should be done in both cases:
case CANCEL:
Events.syncModal(model, this.internalState.getLastModal());
break;
default:
HttpUtils.sendClientError(resp, "invalid interaction " + inter);
}
break;
case giveModeForbidden:
if (inter == Interaction.CONTINUE) {
// need to do more setup to switch to get mode from give mode
model.getSettings().setMode(Mode.get);
model.setSetupComplete(false);
this.internalState.advanceModal(null);
Events.syncModal(model, Modal.proxiedSites);
Events.sync(SyncPath.SETUPCOMPLETE, false);
}
break;
default:
log.error("No matching modal for {}", modal);
}
this.modelIo.write();
}