From 055b8942d265ff10b4f6c9611cca86f585d24023 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Parm=C3=A9nides=20GV?= <parmegv@sdf.org>
Date: Tue, 11 Nov 2014 23:25:36 +0100
Subject: A bit of EIP refactoring.

---
 .../se/leap/bitmaskclient/VpnConfigGenerator.java  | 146 +++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 app/src/main/java/se/leap/bitmaskclient/VpnConfigGenerator.java

(limited to 'app/src/main/java/se/leap/bitmaskclient/VpnConfigGenerator.java')

diff --git a/app/src/main/java/se/leap/bitmaskclient/VpnConfigGenerator.java b/app/src/main/java/se/leap/bitmaskclient/VpnConfigGenerator.java
new file mode 100644
index 00000000..ef049a3c
--- /dev/null
+++ b/app/src/main/java/se/leap/bitmaskclient/VpnConfigGenerator.java
@@ -0,0 +1,146 @@
+/**
+ * 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 android.content.SharedPreferences;
+import android.util.Log;
+import java.util.Iterator;
+import java.util.Vector;
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.json.JSONException;
+
+import se.leap.bitmaskclient.Provider;
+import se.leap.bitmaskclient.EIP;
+
+public class VpnConfigGenerator {
+
+    private JSONObject general_configuration;
+    private JSONObject gateway;
+    
+    private static SharedPreferences preferences;
+    public final static String TAG = VpnConfigGenerator.class.getSimpleName();
+    private final String new_line = System.getProperty("line.separator"); // Platform new line
+
+    public VpnConfigGenerator(SharedPreferences preferences, JSONObject general_configuration, JSONObject gateway) {
+	this.general_configuration = general_configuration;
+	this.gateway = gateway;
+	this.preferences = preferences;
+    }
+    
+    public String generate() {
+	return
+	    generalConfiguration()
+	    + new_line
+	    + gatewayConfiguration()
+	    + new_line
+	    + secretsConfiguration()
+	    + new_line
+	    + androidCustomizations();
+    }
+
+    private String generalConfiguration() {
+	String common_options = "";
+	try {
+	    Iterator keys = general_configuration.keys();
+	    Vector<Vector<String>> value = new Vector<Vector<String>>();
+	    while ( keys.hasNext() ){
+		String key = keys.next().toString();
+					
+		common_options += key + " ";
+		for ( String word : general_configuration.getString(key).split(" ") )
+		    common_options += word + " ";
+		common_options += new_line;
+			
+	    }
+	} catch (JSONException e) {
+	    // TODO Auto-generated catch block
+	    e.printStackTrace();
+	}
+
+	common_options += "client";
+
+	return common_options;
+    }
+    
+    private String gatewayConfiguration() {
+	String remotes = "";
+		
+	String remote = "ip_address";
+	String remote_openvpn_keyword = "remote";
+	String ports = "ports";
+	String protos = "protocols";
+	String capabilities = "capabilities";
+	String udp = "udp";
+		
+	try {
+	    JSONArray protocolsJSON = gateway.getJSONObject(capabilities).getJSONArray(protos);
+	    for ( int i=0; i<protocolsJSON.length(); i++ ) {
+		String remote_line = remote_openvpn_keyword;
+		remote_line += " " + gateway.getString(remote);
+		remote_line += " " + gateway.getJSONObject(capabilities).getJSONArray(ports).optString(0);
+		remote_line += " " + protocolsJSON.optString(i);
+		if(remote_line.endsWith(udp))
+		    remotes = remotes.replaceFirst(remote_openvpn_keyword, remote_line + new_line + remote_openvpn_keyword);
+		else
+		    remotes += remote_line;
+		remotes += new_line;
+	    }
+	} catch (JSONException e) {
+	    // TODO Auto-generated catch block
+	    e.printStackTrace();
+	}
+		
+	Log.d(TAG, "remotes = " + remotes);
+	return remotes;
+    }
+
+    private String secretsConfiguration() {
+						    
+	String ca = 
+	    "<ca>"
+	    + new_line
+	    + preferences.getString(Provider.CA_CERT, "")
+	    + new_line
+	    + "</ca>";
+		
+	String key =
+	    "<key>"
+	    + new_line
+	    + preferences.getString(EIP.PRIVATE_KEY, "")
+	    + new_line
+	    + "</key>";
+		
+	String openvpn_cert =
+	    "<cert>"
+	    + new_line
+	    + preferences.getString(EIP.CERTIFICATE, "")
+	    + new_line
+	    + "</cert>";
+
+	return ca + new_line + key + new_line + openvpn_cert;
+    }
+
+    private String androidCustomizations() {
+	return
+	    "remote-cert-tls server"
+	    + new_line
+	    + "persist-tun"
+	    + new_line
+	    + "auth-retry nointeract";
+    }
+}
-- 
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