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/*
* Copyright © 2018 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
package altosmapd;
import java.net.*;
import java.util.*;
import java.util.concurrent.*;
import java.io.*;
import org.altusmetrum.altoslib_13.*;
public class AltosMapdClient extends Thread implements AltosMapStoreListener {
private Socket socket;
private AltosJson request;
private AltosJson reply;
private void set_status(int status) {
reply.put("status", status);
}
private void set_filename(String filename) {
reply.put("filename", filename);
}
private void set_content_type(String content_type) {
reply.put("content_type", content_type);
}
private String content_type(File file) {
String content_type = "application/octet-stream";
String basename = file.getName();
if (basename.endsWith(".jpg"))
content_type = "image/jpeg";
if (basename.endsWith(".png"))
content_type = "image/png";
return content_type;
}
private void set_file(File file) {
set_filename(file.getAbsolutePath());
set_content_type(content_type(file));
}
private Semaphore store_ready;
public void notify_store(AltosMapStore map_store, int status) {
if (status != AltosMapTile.fetching)
store_ready.release();
}
public void run() {
reply = new AltosJson();
try {
request = AltosJson.fromInputStream(socket.getInputStream());
double lat = request.get_double("lat", AltosLib.MISSING);
double lon = request.get_double("lon", AltosLib.MISSING);
int zoom = request.get_int("zoom", AltosLib.MISSING);
String addr = request.get_string("remote_addr", null);
if (lat == AltosLib.MISSING ||
lon == AltosLib.MISSING ||
zoom == AltosLib.MISSING ||
addr == null)
{
set_status(400);
} else if (!AltosMapd.check_lat_lon(lat, lon)) {
set_status(403); /* Forbidden */
} else {
store_ready = new Semaphore(0);
System.out.printf("Fetching tile for %g %g %d\n", lat, lon, zoom);
AltosMapStore map_store = AltosMapStore.get(new AltosLatLon(lat, lon),
zoom,
AltosMapd.maptype,
AltosMapd.px_size,
AltosMapd.scale);
int status;
if (map_store == null) {
System.out.printf("no store?\n");
status = AltosMapTile.failed;
} else {
map_store.add_listener(this);
System.out.printf("Waiting for tile\n");
try {
store_ready.acquire();
} catch (Exception ie) {
}
status = map_store.status();
}
if (status == AltosMapTile.fetched || status == AltosMapTile.loaded) {
set_status(200);
set_file(map_store.file);
} else if (status == AltosMapTile.failed) {
set_status(404);
} else if (status == AltosMapTile.fetching) {
set_status(408);
} else if (status == AltosMapTile.bad_request) {
set_status(400);
} else if (status == AltosMapTile.forbidden) {
set_status(403);
} else {
set_status(400);
}
}
} catch (Exception e) {
System.out.printf("client exception %s\n", e.toString());
e.printStackTrace(System.out);
set_status(400);
} finally {
try {
Writer writer = new PrintWriter(socket.getOutputStream());
reply.write(writer);
writer.write('\n');
writer.flush();
} catch (IOException ie) {
}
try {
socket.close();
} catch (IOException ie) {
}
System.out.printf("client done\n");
}
}
public AltosMapdClient(Socket socket) {
this.socket = socket;
start();
}
}
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