183 lines
4.6 KiB
Java
183 lines
4.6 KiB
Java
/*
|
|
* 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 altosmap;
|
|
|
|
import java.net.*;
|
|
import java.io.*;
|
|
import java.util.*;
|
|
import java.text.*;
|
|
|
|
import org.altusmetrum.altoslib_14.*;
|
|
|
|
public class AltosMap {
|
|
|
|
public final static int port = 16717;
|
|
|
|
public final static String protocol_version = "1.0.0";
|
|
|
|
String query_string;
|
|
String remote_addr;
|
|
|
|
public String reason_string(int code) {
|
|
switch (code) {
|
|
case 200:
|
|
return "OK";
|
|
case 400:
|
|
return "Bad Request";
|
|
case 403:
|
|
return "Forbidden";
|
|
case 404:
|
|
return "Not Found";
|
|
case 408:
|
|
return "Request Timeout";
|
|
default:
|
|
return "Failure";
|
|
}
|
|
}
|
|
|
|
public void write_status(int status) {
|
|
System.out.printf("Status: %d %s\n", status, reason_string(status));
|
|
}
|
|
|
|
public void write_type(String type) {
|
|
System.out.printf("Content-Type: %s\n", type);
|
|
}
|
|
|
|
public void fail(int status, String reason) {
|
|
write_status(status);
|
|
write_type("text/html");
|
|
System.out.printf("\n");
|
|
System.out.printf("<html>\n");
|
|
System.out.printf("<head><title>Map Fetch Failure</title></head>\n");
|
|
System.out.printf("<body>%s</body>\n", reason);
|
|
System.out.printf("</html>\n");
|
|
System.exit(1);
|
|
}
|
|
|
|
public void process() {
|
|
query_string = System.getenv("QUERY_STRING");
|
|
|
|
if (query_string == null)
|
|
fail(400, "Missing query string");
|
|
|
|
remote_addr = System.getenv("REMOTE_ADDR");
|
|
|
|
if (remote_addr == null)
|
|
fail(400, "Missing remote address");
|
|
|
|
String[] queries = query_string.split("&");
|
|
|
|
double lon = AltosLib.MISSING;
|
|
double lat = AltosLib.MISSING;
|
|
int zoom = AltosLib.MISSING;
|
|
String version = null;
|
|
|
|
try {
|
|
for (String query : queries) {
|
|
String[] q = query.split("=");
|
|
if (q.length >= 2) {
|
|
String name = q[0];
|
|
String value = q[1];
|
|
if (name.equals("lon"))
|
|
lon = AltosParse.parse_double_net(value);
|
|
else if (name.equals("lat"))
|
|
lat = AltosParse.parse_double_net(value);
|
|
else if (name.equals("zoom"))
|
|
zoom = AltosParse.parse_int(value);
|
|
else if (name.equals("version"))
|
|
version = value;
|
|
else
|
|
fail(400, String.format("Extra query param \"%s\"", query));
|
|
}
|
|
}
|
|
} catch (ParseException pe) {
|
|
fail(400, String.format("Invalid query: %s", pe.toString()));
|
|
}
|
|
|
|
if (version != null) {
|
|
System.out.printf("Content-Type: text/plain\n");
|
|
System.out.printf("\n");
|
|
System.out.printf("%s\n", protocol_version);
|
|
} else {
|
|
if (lon == AltosLib.MISSING)
|
|
fail(400, "Missing longitude");
|
|
if (lat == AltosLib.MISSING)
|
|
fail(400, "Missing latitude");
|
|
if (zoom == AltosLib.MISSING)
|
|
fail(400, "Missing zoom");
|
|
|
|
try {
|
|
Socket socket = null;
|
|
int tries = 0;
|
|
|
|
while (tries < 10 && socket == null) {
|
|
try {
|
|
socket = new Socket(InetAddress.getLoopbackAddress(), port);
|
|
} catch (IOException ie) {
|
|
Thread.sleep(100);
|
|
tries++;
|
|
}
|
|
}
|
|
|
|
AltosJson request = new AltosJson();
|
|
|
|
request.put("lat", lat);
|
|
request.put("lon", lon);
|
|
request.put("zoom", zoom);
|
|
request.put("remote_addr", remote_addr);
|
|
|
|
Writer writer = new PrintWriter(socket.getOutputStream());
|
|
request.write(writer);
|
|
writer.flush();
|
|
|
|
AltosJson reply = AltosJson.fromInputStream(socket.getInputStream());
|
|
|
|
int status = reply.get_int("status", 400);
|
|
|
|
if (status != 200)
|
|
fail(status, "Bad cache status");
|
|
|
|
String filename = reply.get_string("filename", null);
|
|
try {
|
|
File file = new File(filename);
|
|
long length = file.length();
|
|
FileInputStream in = new FileInputStream(file);
|
|
String content_type = reply.get_string("content_type", null);
|
|
System.out.printf("Content-Type: %s\n", content_type);
|
|
System.out.printf("Content-Length: %d\n", file.length());
|
|
System.out.printf("\n");
|
|
byte[] buf = new byte[4096];
|
|
int bytes_read;
|
|
while ((bytes_read = in.read(buf)) > 0)
|
|
System.out.write(buf);
|
|
} catch (IOException ie) {
|
|
fail(404, String.format("IO Exception: %s", ie.toString()));
|
|
}
|
|
} catch (Exception e) {
|
|
fail(404, String.format("Exception %s", e.toString()));
|
|
}
|
|
}
|
|
}
|
|
|
|
public AltosMap() {
|
|
}
|
|
|
|
public static void main(final String[] args) {
|
|
|
|
new AltosMap().process();
|
|
|
|
}
|
|
}
|