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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;
import java.io.Serializable;
import java.util.Arrays;
import java.util.Locale;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.content.Context;
import android.app.Activity;
import android.content.SharedPreferences;
/**
* @author Sean Leonard <meanderingcode@aetherislands.net>
*
*/
public final class Provider implements Serializable {
private static final long serialVersionUID = 6003835972151761353L;
private static Provider instance = null;
// We'll access our preferences here
private static SharedPreferences preferences = null;
// Represents our Provider's provider.json
private static JSONObject definition = null;
final public static String
API_URL = "api_uri",
API_VERSION = "api_version",
ALLOW_REGISTRATION = "allow_registration",
API_RETURN_SERIAL = "serial",
SERVICE = "service",
KEY = "provider",
CA_CERT = "ca_cert",
NAME = "name",
DESCRIPTION = "description",
DOMAIN = "domain",
MAIN_URL = "main_url",
DOT_JSON_URL = "provider_json_url"
;
// Array of what API versions we understand
protected static final String[] API_VERSIONS = {"1"}; // I assume we might encounter arbitrary version "numbers"
// Some API pieces we want to know about
private static final String API_TERM_SERVICES = "services";
private static final String API_TERM_NAME = "name";
private static final String API_TERM_DOMAIN = "domain";
private static final String API_TERM_DEFAULT_LANGUAGE = "default_language";
protected static final String[] API_EIP_TYPES = {"openvpn"};
private static final String PREFS_EIP_NAME = null;
// What, no individual fields?! We're going to gamble on org.json.JSONObject and JSONArray
// Supporting multiple API versions will probably break this paradigm,
// Forcing me to write a real constructor and rewrite getters/setters
// Also will refactor if i'm instantiating the same local variables all the time
/**
*
*/
private Provider() {}
protected static Provider getInstance(){
if(instance==null){
instance = new Provider();
}
return instance;
}
protected void init(Activity activity) {
// Load our preferences from SharedPreferences
// If there's nothing there, we will end up returning a rather empty object
// to whoever called getInstance() and they can run the First Run Wizard
//preferences = context.getgetPreferences(0); // 0 == MODE_PRIVATE, but we don't extend Android's classes...
// Load SharedPreferences
preferences = activity.getSharedPreferences(Dashboard.SHARED_PREFERENCES,Context.MODE_PRIVATE);
// Inflate our provider.json data
try {
definition = new JSONObject( preferences.getString(Provider.KEY, "") );
} catch (JSONException e) {
// TODO: handle exception
// FIXME!! We want "real" data!!
}
}
protected String getDomain(){
String domain = "Null";
try {
domain = definition.getString(API_TERM_DOMAIN);
} catch (JSONException e) {
domain = "Null";
e.printStackTrace();
}
return domain;
}
protected String getName(){
// Should we pass the locale in, or query the system here?
String lang = Locale.getDefault().getLanguage();
String name = "Null"; // Should it actually /be/ null, for error conditions?
try {
name = definition.getJSONObject(API_TERM_NAME).getString(lang);
} catch (JSONException e) {
// TODO: Nesting try/catch blocks? Crazy
// Maybe you should actually handle exception?
try {
name = definition.getJSONObject(API_TERM_NAME).getString( definition.getString(API_TERM_DEFAULT_LANGUAGE) );
} catch (JSONException e2) {
// TODO: Will you handle the exception already?
}
}
return name;
}
protected String getDescription(){
String lang = Locale.getDefault().getLanguage();
String desc = null;
try {
desc = definition.getJSONObject("description").getString(lang);
} catch (JSONException e) {
// TODO: handle exception!!
try {
desc = definition.getJSONObject("description").getString( definition.getString("default_language") );
} catch (JSONException e2) {
// TODO: i can't believe you're doing it again!
}
}
return desc;
}
protected boolean hasEIP() {
JSONArray services = null;
try {
services = definition.getJSONArray(API_TERM_SERVICES); // returns ["openvpn"]
} catch (Exception e) {
// TODO: handle exception
}
for (int i=0;i<API_EIP_TYPES.length+1;i++){
try {
// Walk the EIP types array looking for matches in provider's service definitions
if ( Arrays.asList(API_EIP_TYPES).contains( services.getString(i) ) )
return true;
} catch (NullPointerException e){
e.printStackTrace();
return false;
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
}
return false;
}
protected String getEIPType() {
// FIXME!!!!! We won't always be providing /only/ OpenVPN, will we?
// This will have to hook into some saved choice of EIP transport
if ( instance.hasEIP() )
return "OpenVPN";
else
return null;
}
protected JSONObject getEIP() {
// FIXME!!!!! We won't always be providing /only/ OpenVPN, will we?
// This will have to hook into some saved choice of EIP transport, cluster, gateway
// with possible "choose at random" preference
if ( instance.hasEIP() ){
// TODO Might need an EIP class, but we've only got OpenVPN type right now,
// and only one gateway for our only provider...
// TODO We'll try to load from preferences, have to call ProviderAPI if we've got nothin...
JSONObject eipObject = null;
try {
eipObject = new JSONObject( preferences.getString(PREFS_EIP_NAME, "") );
} catch (JSONException e) {
// TODO ConfigHelper.rescueJSON()
// Still nothing?
// TODO ProviderAPI.getEIP()
e.printStackTrace();
}
return eipObject;
} else
return null;
}
}
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