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authorSean Leonard <meanderingcode@aetherislands.net>2014-03-01 18:48:02 -0800
committerSean Leonard <meanderingcode@aetherislands.net>2014-03-01 18:48:02 -0800
commit8ddd506b648ff4b91d506c8bd9b423e6c1a9f6b8 (patch)
treee8acd85461afa6b97b5f01be7315a59cb1b667bd /src/se/leap/bitmaskclient/EIP.java
parentc9eea0961c8c6082b5f996b6a949f6d63d12322a (diff)
Select VPN gateway by least timezone difference
Diffstat (limited to 'src/se/leap/bitmaskclient/EIP.java')
-rw-r--r--src/se/leap/bitmaskclient/EIP.java71
1 files changed, 62 insertions, 9 deletions
diff --git a/src/se/leap/bitmaskclient/EIP.java b/src/se/leap/bitmaskclient/EIP.java
index 70560919..c9d3e5ba 100644
--- a/src/se/leap/bitmaskclient/EIP.java
+++ b/src/se/leap/bitmaskclient/EIP.java
@@ -16,10 +16,14 @@
*/
package se.leap.bitmaskclient;
+import java.util.Calendar;
import java.util.Collection;
import java.util.HashMap;
+import java.util.HashSet;
import java.util.Iterator;
import java.util.NoSuchElementException;
+import java.util.Set;
+import java.util.TreeMap;
import java.util.Vector;
import org.json.JSONArray;
@@ -291,10 +295,61 @@ public final class EIP extends IntentService {
* @return The gateway to connect to
*/
private OVPNGateway selectGateway() {
- // TODO Implement gateway selection logic based on TZ or preferences
- // TODO Implement search through gateways loaded from SharedPreferences
// TODO Remove String arg constructor in favor of findGatewayByName(String)
- return new OVPNGateway("first");
+
+ Calendar cal = Calendar.getInstance();
+ int localOffset = cal.get(Calendar.ZONE_OFFSET) / 3600000;
+ TreeMap<Integer, Set<String>> offsets = new TreeMap<Integer, Set<String>>();
+ JSONObject locationsObjects = null;
+ Iterator<String> locations = null;
+ try {
+ locationsObjects = eipDefinition.getJSONObject("locations");
+ locations = locationsObjects.keys();
+ } catch (JSONException e1) {
+ // TODO Auto-generated catch block
+ e1.printStackTrace();
+ }
+
+ while (locations.hasNext()) {
+ String locationName = locations.next();
+ JSONObject location = null;
+ try {
+ location = locationsObjects.getJSONObject(locationName);
+
+ // Distance along the numberline of Prime Meridian centric, assumes UTC-11 through UTC+12
+ int dist = Math.abs(localOffset - location.optInt("timezone"));
+ // Farther than 12 timezones and it's shorter around the "back"
+ if (dist > 12)
+ dist = 12 - (dist -12); // Well i'll be. Absolute values make equations do funny things.
+
+ Set<String> set = offsets.get(dist);
+ if (set == null) set = new HashSet<String>();
+ set.add(locationName);
+ offsets.put(dist, set);
+ } catch (JSONException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+ }
+
+ String closestLocation = offsets.firstEntry().getValue().iterator().next();
+ JSONArray gateways = null;
+ String chosenHost = null;
+ try {
+ gateways = eipDefinition.getJSONArray("gateways");
+ for (int i = 0; i < gateways.length(); i++) {
+ JSONObject gw = gateways.getJSONObject(i);
+ if ( gw.getString("location").equalsIgnoreCase(closestLocation) ){
+ chosenHost = gw.getString("host");
+ break;
+ }
+ }
+ } catch (JSONException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+
+ return new OVPNGateway(chosenHost);
}
/**
@@ -368,12 +423,10 @@ public final class EIP extends IntentService {
ProfileManager vpl = ProfileManager.getInstance(context);
try {
- if ( mName == "first" ) {
- mName = vpl.getProfiles().iterator().next().mName;
- }
-
- mVpnProfile = vpl.getProfileByName(mName);
-
+ if ( mName == null )
+ mVpnProfile = vpl.getProfiles().iterator().next();
+ else
+ mVpnProfile = vpl.getProfileByName(mName);
} catch (NoSuchElementException e) {
updateEIPService();
this.loadVpnProfile(); // FIXME catch infinite loops