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/**
* Copyright (c) 2013 LEAP Encryption Access Project and contributers
*
* 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 3 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package se.leap.bitmaskclient.eip;
import android.content.Context;
import android.content.SharedPreferences;
import com.google.gson.Gson;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.io.StringReader;
import java.util.HashSet;
import java.util.Set;
import de.blinkt.openvpn.VpnProfile;
import de.blinkt.openvpn.core.ConfigParser;
import se.leap.bitmaskclient.BitmaskApp;
import se.leap.bitmaskclient.utils.PreferenceHelper;
/**
* Gateway provides objects defining gateways and their metadata.
* Each instance contains a VpnProfile for OpenVPN specific data and member
* variables describing capabilities and location (name)
*
* @author Sean Leonard <meanderingcode@aetherislands.net>
* @author Parménides GV <parmegv@sdf.org>
*/
public class Gateway {
public final static String TAG = Gateway.class.getSimpleName();
public final static String KEY_N_CLOSEST_GATEWAY = "N_CLOSEST_GATEWAY";
private JSONObject generalConfiguration;
private JSONObject secrets;
private JSONObject gateway;
private String mName;
private int timezone;
private VpnProfile mVpnProfile;
/**
* Build a gateway object from a JSON OpenVPN gateway definition in eip-service.json
* and create a VpnProfile belonging to it.
*/
public Gateway(JSONObject eip_definition, JSONObject secrets, JSONObject gateway, Context context) {
this.gateway = gateway;
this.secrets = secrets;
generalConfiguration = getGeneralConfiguration(eip_definition);
timezone = getTimezone(eip_definition);
mName = locationAsName(eip_definition);
mVpnProfile = createVPNProfile();
System.out.println("###########" + mName + "###########");
mVpnProfile.mName = mName;
Set<String> excludedAppsVpn = PreferenceHelper.getExcludedApps(context);
if (excludedAppsVpn != null) {
mVpnProfile.mAllowedAppsVpn = new HashSet<>(excludedAppsVpn);
}
else {
mVpnProfile.mAllowedAppsVpn = null;
}
}
private JSONObject getGeneralConfiguration(JSONObject eip_definition) {
try {
return eip_definition.getJSONObject("openvpn_configuration");
} catch (JSONException e) {
return new JSONObject();
}
}
private int getTimezone(JSONObject eip_definition) {
JSONObject location = getLocationInfo(eip_definition);
return location.optInt("timezone");
}
private String locationAsName(JSONObject eip_definition) {
JSONObject location = getLocationInfo(eip_definition);
return location.optString("name");
}
private JSONObject getLocationInfo(JSONObject eipDefinition) {
try {
JSONObject locations = eipDefinition.getJSONObject("locations");
return locations.getJSONObject(gateway.getString("location"));
} catch (JSONException e) {
return new JSONObject();
}
}
/**
* Create and attach the VpnProfile to our gateway object
*/
private VpnProfile createVPNProfile() {
try {
ConfigParser cp = new ConfigParser();
VpnConfigGenerator vpnConfigurationGenerator = new VpnConfigGenerator(generalConfiguration, secrets, gateway);
String configuration = vpnConfigurationGenerator.generate();
cp.parseConfig(new StringReader(configuration));
return cp.convertProfile();
} catch (ConfigParser.ConfigParseError e) {
// FIXME We didn't get a VpnProfile! Error handling! and log level
e.printStackTrace();
return null;
} catch (IOException e) {
// FIXME We didn't get a VpnProfile! Error handling! and log level
e.printStackTrace();
return null;
}
}
public String getName() {
return mName;
}
public VpnProfile getProfile() {
return mVpnProfile;
}
public int getTimezone() {
return timezone;
}
@Override
public String toString() {
return new Gson().toJson(this, Gateway.class);
}
@Override
public boolean equals(Object obj) {
return obj instanceof Gateway &&
(this.mVpnProfile != null &&
((Gateway) obj).mVpnProfile != null &&
this.mVpnProfile.mConnections != null &&
((Gateway) obj).mVpnProfile != null &&
this.mVpnProfile.mConnections.length > 0 &&
((Gateway) obj).mVpnProfile.mConnections.length > 0 &&
this.mVpnProfile.mConnections[0].mServerName != null &&
this.mVpnProfile.mConnections[0].mServerName.equals(((Gateway) obj).mVpnProfile.mConnections[0].mServerName)) ||
this.mVpnProfile == null && ((Gateway) obj).mVpnProfile == null;
}
}
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