git.gag.com Git - fw/altos/blob - map-server/altos-mapd/AltosMapd.java

   1 /*
   2  * Copyright © 2018 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  */
  14
  15 package altosmapd;
  16
  17 import java.net.*;
  18 import java.io.*;
  19 import java.text.*;
  20 import java.util.*;
  21 import java.util.concurrent.*;
  22
  23 import org.altusmetrum.altoslib_13.*;
  24
  25 public class AltosMapd implements AltosLaunchSiteListener {
  26
  27         public static int port = 16717;
  28
  29         public final static int maptype = AltosMap.maptype_hybrid;
  30
  31         public final static int px_size = 512;
  32
  33         public final static int scale = 1;
  34
  35         public static double valid_radius = 17000;      /* 17km */
  36
  37         public String map_dir = null;
  38         public String launch_sites_file = null;
  39         public String key_file = null;
  40
  41         public void usage() {
  42                 System.out.printf("usage: altos-mapd [--mapdir <map-directory] [--launch-sites <launch-sites-file>]\n" +
  43                                   "                  [--radius <valid-radius-m> [--port <port>] [--key <key-file>]\n");
  44                 System.exit(1);
  45         }
  46
  47         private static Semaphore launch_sites_ready;
  48
  49         private static List<AltosLaunchSite> launch_sites;
  50
  51         public void notify_launch_sites(List<AltosLaunchSite> sites) {
  52                 synchronized (launch_sites_ready) {
  53                         if (sites != null) {
  54                                 launch_sites = sites;
  55                                 launch_sites_ready.release();
  56                         }
  57                 }
  58         }
  59
  60         public static boolean check_lat_lon(double lat, double lon) {
  61                 synchronized (launch_sites_ready) {
  62                         if (launch_sites == null) {
  63                                 try {
  64                                         launch_sites_ready.acquire();
  65                                 } catch (InterruptedException ie) {
  66                                         return false;
  67                                 }
  68                         }
  69                 }
  70                 if (launch_sites == null) {
  71                         System.out.printf("No launch site data available, refusing all requests\n");
  72                         return false;
  73                 }
  74
  75                 for (AltosLaunchSite site : launch_sites) {
  76                         AltosGreatCircle gc = new AltosGreatCircle(site.latitude, site.longitude,
  77                                                                    lat, lon);
  78                         if (gc.distance <= valid_radius)
  79                                 return true;
  80                 }
  81
  82                 return false;
  83         }
  84
  85         AltosMapdServer server;
  86
  87         public void process(String[] args) {
  88
  89                 AltosPreferences.init(new AltosMapdPreferences());
  90
  91                 int skip = 1;
  92                 for (int i = 0; i < args.length; i += skip) {
  93                         skip = 1;
  94                         if (args[i].equals("--mapdir") && i < args.length-1) {
  95                                 map_dir = args[i+1];
  96                                 skip = 2;
  97                         } else if (args[i].equals("--launch-sites") && i < args.length-1) {
  98                                 launch_sites_file = args[i+1];
  99                                 skip = 2;
 100                         } else if (args[i].equals("--radius") && i < args.length-1) {
 101                                 try {
 102                                         valid_radius = AltosParse.parse_double_locale(args[i+1]);
 103                                 } catch (ParseException pe) {
 104                                         usage();
 105                                 }
 106                                 skip = 2;
 107                         } else if (args[i].equals("--port") && i < args.length-1) {
 108                                 try {
 109                                         port = AltosParse.parse_int(args[i+1]);
 110                                 } catch (ParseException pe) {
 111                                         usage();
 112                                 }
 113                                 skip = 2;
 114                         } else if (args[i].equals("--key") && i < args.length-1) {
 115                                 key_file = args[i+1];
 116                                 skip = 2;
 117                         } else {
 118                                 usage();
 119                         }
 120                 }
 121
 122                 if (map_dir == null)
 123                         usage();
 124
 125                 if (key_file != null) {
 126                         try {
 127                                 BufferedReader key_reader = new BufferedReader(new FileReader(key_file));
 128
 129                                 String line = key_reader.readLine();
 130                                 if (line == null || line.length() != 39) {
 131                                         System.out.printf("%s: invalid contents %d \"%s\"\n",
 132                                                           key_file, line.length(), line);
 133                                         usage();
 134                                 }
 135                                 key_reader.close();
 136                                 AltosMapStore.google_maps_api_key = line;
 137                         } catch (Exception e) {
 138                                 System.out.printf("%s: %s\n", key_file, e.toString());
 139                                 usage();
 140                         }
 141                 }
 142
 143                 AltosPreferences.mapdir = new File(map_dir);
 144
 145                 if (launch_sites_file != null)
 146                         AltosLaunchSites.launch_sites_url = "file://" + launch_sites_file;
 147
 148                 launch_sites_ready = new Semaphore(0);
 149
 150                 new AltosLaunchSites(this);
 151
 152                 try {
 153                         server = new AltosMapdServer(port);
 154                 } catch (IOException ie) {
 155                         System.out.printf("Cannot bind to port %d: %s\n", port, ie.toString());
 156                         usage();
 157                 }
 158
 159                 for (;;) {
 160                         try {
 161                                 Socket client = server.accept();
 162                                 if (client == null) {
 163                                         System.out.printf("accept failed\n");
 164                                         continue;
 165                                 }
 166                                 System.out.printf("got client\n");
 167                                 new AltosMapdClient(client);
 168                         } catch (Exception e) {
 169                                 System.out.printf("Exception %s\n", e.toString());
 170                         }
 171                 }
 172         }
 173
 174         public void AltosMapd() {
 175         }
 176
 177         public static void main(final String[] args) {
 178                 new AltosMapd().process(args);
 179         }
 180 }