X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=map-server%2Faltos-map%2FAltosMap.java;fp=map-server%2Faltos-map%2FAltosMap.java;h=83bc7cea6d27578435e2fe663af5b63b92a77cff;hb=3b817a2b854065af23c9ec8e849150e6930f51e9;hp=0000000000000000000000000000000000000000;hpb=5a95ed9c9419c15352b8dc1d895c9adce30f99f5;p=fw%2Faltos diff --git a/map-server/altos-map/AltosMap.java b/map-server/altos-map/AltosMap.java new file mode 100644 index 00000000..83bc7cea --- /dev/null +++ b/map-server/altos-map/AltosMap.java @@ -0,0 +1,156 @@ +/* + * Copyright Â© 2018 Keith Packard + * + * 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_13.*; + +public class AltosMap { + + public final static int port = 16717; + + 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("%s\n", reason); + 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; + + 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 + fail(400, String.format("Extra query param \"%s\"", query)); + } + } + } catch (ParseException pe) { + fail(400, String.format("Invalid query: %s", pe.toString())); + } + + 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 = new Socket(InetAddress.getLoopbackAddress(), port); + + 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()); + 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(); + + } +}