package be.nikiroo.fanfix.library;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import be.nikiroo.fanfix.Instance;
import be.nikiroo.fanfix.data.Chapter;
import be.nikiroo.fanfix.data.MetaData;
import be.nikiroo.fanfix.data.Paragraph;
import be.nikiroo.fanfix.data.Story;
import be.nikiroo.utils.Progress;
import be.nikiroo.utils.Progress.ProgressListener;
import be.nikiroo.utils.StringUtils;
import be.nikiroo.utils.Version;
import be.nikiroo.utils.serial.server.ConnectActionServerObject;
import be.nikiroo.utils.serial.server.ServerObject;
/**
* Create a new remote server that will listen for orders on the given port.
*
* The available commands are given as arrays of objects (first item is the
* command, the rest are the arguments).
*
* All commands, including PING, will first return a random value to you that
* you must hash with your key and return before processing the rest; if the
* value is OK, it will return "true", if not, it will return NULL and stop the
* connection.
*
* BTW: this system is by no means secure. It is just slightly
* obfuscated, and operate on clear text (because Google decided not to support
* anonymous SSL exchanges on Android, and the main use case for this server is
* Android).
*
*
PING: will return PONG if the key is accepted
*
GET_METADATA *: will return the metadata of all the stories in the
* library (array)
*
*
GET_METADATA [luid]: will return the metadata of the story of LUID luid
*
GET_STORY [luid]: will return the given story if it exists (or NULL if
* not)
*
SAVE_STORY [luid]: save the story (that must be sent just after the
* command) with the given LUID, then return the LUID
*
IMPORT [url]: save the story found at the given URL, then return the LUID
*
*
DELETE_STORY [luid]: delete the story of LUID luid
*
GET_COVER [luid]: return the cover of the story
*
GET_CUSTOM_COVER ["SOURCE"|"AUTHOR"] [source]: return the cover for this
* source/author
*
SET_COVER ["SOURCE"|"AUTHOR"] [value] [luid]: set the default cover for
* the given source/author to the cover of the story denoted by luid
*
CHANGE_SOURCE [luid] [new source]: change the source of the story of LUID
* luid
*
EXIT: stop the server
*
*
* @author niki
*/
public class RemoteLibraryServer extends ServerObject {
private final String key;
/**
* Create a new remote server (will not be active until
* {@link RemoteLibraryServer#start()} is called).
*
* @param key
* the key that will restrict access to this server
* @param port
* the port to listen on
*
* @throws IOException
* in case of I/O error
*/
public RemoteLibraryServer(String key, int port) throws IOException {
super("Fanfix remote library", port, false);
this.key = key;
setTraceHandler(Instance.getTraceHandler());
}
@Override
protected Object onRequest(ConnectActionServerObject action,
Version clientVersion, Object data) throws Exception {
long start = new Date().getTime();
String command = "";
Object[] args = new Object[0];
if (data instanceof Object[]) {
Object[] dataArray = (Object[]) data;
if (dataArray.length >= 2) {
command = "" + dataArray[0];
args = new Object[dataArray.length - 1];
for (int i = 1; i < dataArray.length; i++) {
args[i - 1] = dataArray[i];
}
}
}
String trace = "[ " + command + "] ";
for (Object arg : args) {
trace += arg + " ";
}
getTraceHandler().trace(trace);
// Authentication:
String random = StringUtils.getMd5Hash(Double.toString(Math.random()));
action.send(random);
String answer = "";
try {
answer += action.rec();
} catch (NullPointerException e) {
return null;
}
if (answer.equals(RemoteLibrary.hashKey(key, random))) {
action.send(true);
} else {
getTraceHandler().trace("Key rejected.");
return null;
}
Object rep = doRequest(action, command, args);
String rec = StringUtils.formatNumber(action.getBytesReceived()) + "b";
String sent = StringUtils.formatNumber(action.getBytesSent()) + "b";
getTraceHandler().trace(
String.format("[>%s]: (%s sent, %s rec) in %d ms", command,
sent, rec, (new Date().getTime() - start)));
return rep;
}
private Object doRequest(ConnectActionServerObject action, String command,
Object[] args) throws NoSuchFieldException, NoSuchMethodException,
ClassNotFoundException, IOException {
if ("PING".equals(command)) {
return "PONG";
} else if ("GET_METADATA".equals(command)) {
if ("*".equals(args[0])) {
Progress pg = createPgForwarder(action);
List metas = new ArrayList();
for (MetaData meta : Instance.getLibrary().getMetas(pg)) {
MetaData light;
if (meta.getCover() == null) {
light = meta;
} else {
light = meta.clone();
light.setCover(null);
}
metas.add(light);
}
forcePgDoneSent(pg);
return metas.toArray(new MetaData[] {});
}
return new MetaData[] { Instance.getLibrary().getInfo(
(String) args[0]) };
} else if ("GET_STORY".equals(command)) {
MetaData meta = Instance.getLibrary().getInfo((String) args[0]);
meta = meta.clone();
meta.setCover(null);
action.send(meta);
action.rec();
Story story = Instance.getLibrary()
.getStory((String) args[0], null);
for (Object obj : breakStory(story)) {
action.send(obj);
action.rec();
}
} else if ("SAVE_STORY".equals(command)) {
List