1 files changed, 131 insertions, 0 deletions
diff --git a/app/src/fil/libre/repwifiapp/helpers/Engine4p2.java b/app/src/fil/libre/repwifiapp/helpers/Engine4p2.java
new file mode 100644
index 0000000..12d8da8
--- /dev/null
+++ b/app/src/fil/libre/repwifiapp/helpers/Engine4p2.java
@@ -0,0 +1,131 @@
+//
+// Copyright 2017 Filippo "Fil" Bergamo <fil.bergamo@riseup.net>
+// 
+// This file is part of RepWifiApp.
+//
+// RepWifiApp 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.
+// 
+// RepWifiApp 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 RepWifiApp.  If not, see <http://www.gnu.org/licenses/>.
+// 
+// ********************************************************************
+
+package fil.libre.repwifiapp.helpers;
+
+import fil.libre.repwifiapp.Commons;
+
+
+public class Engine4p2 extends Engine{
+
+	@Override
+	protected String getCmdWpaStart(){
+		return "wpa_supplicant -B -dd -i" + Commons.INTERFACE_NAME + " -C\"" + Commons.SOCKET_DIR + "\" -c\"" + Commons.WPA_CONF + "\" -P\"" + Commons.PID_FILE + "\"";
+	}
+	
+	public boolean loadModules(){
+		try {
+			//TODO
+			//implement kernel modules loading
+			return true;
+		} catch (Exception e) {
+			Utils.logError("Error while loading kernel modules",e);
+			return false;
+		}
+	}
+	
+	@Override
+	public boolean connect(AccessPointInfo info){
+		
+		killPreviousConnections();
+				
+		if (info == null){
+			Utils.logDebug("Engine's connect() received a null AccessPointInfo");
+			return false;
+		}
+		
+		if (! createConfigFile(info)){
+			return false;
+		}
+		
+		//launch wpa_supplicant specifying our custom configuration and the socket file
+		if (! executeRootCmd(getCmdWpaStart())){
+			Utils.logError("wpa_supplicant connection command failed.");
+			return false;
+		}
+
+		//negotiate DHCP lease
+		if (!runDhcpcd()){
+			return false;
+		}
+
+		//set DNS's
+		if (! executeRootCmd("setprop net.dns1 " + DNS1)){
+			Utils.logError("setting dns1 failed");
+			return false;
+		}
+
+		if (! executeRootCmd("setprop net.dns2 " + DNS2)){
+			Utils.logError("setting dns2 failed");
+			return false;
+		}
+
+		//TODO
+		//implement wpa_cli command to query wpa_supplicant's state
+		//in order to confirm that connection was successful.
+
+		return true;
+		
+	}
+	
+	private boolean createConfigFile(AccessPointInfo info){
+		
+		try {
+						
+			if (! deleteFileIfExists(Commons.WPA_CONF)){
+				Utils.logError("Unable to remove wpa_supplicant.conf before writing it.");
+				return false;				
+			}
+			
+			String configText = "ctrl_interface=DIR=" + Commons.SOCKET_DIR + "\n" +
+							"update_config=1\n" +
+							"network={\n"+
+							"	ssid=\"" + info.getSSID() + "\"\n";
+						
+			if (info.needsPassword()){
+				configText += "	psk=\""+ info.getPassword() + "\"\n";
+			}else {
+				configText += "	key_mgmt=NONE\n";
+			}					
+			
+			configText += "}\n";
+			
+			if ( ! Utils.writeFile(Commons.WPA_CONF, configText, true) ){
+				Utils.logError("Unable to write wpa_supplicant.conf file!");
+				return false;
+			}
+			
+			//chmod wpa_supplicant.conf, in order to make it accessible
+			if(chmodFile(Commons.WPA_CONF, "666")){
+				return true;
+			}else {
+				Utils.logError("Unable to chmod wpa_supplicant.conf");
+				return false;			
+			}
+						
+		} catch (Exception e) {
+			Utils.logError("Error while creating wpa_supplicant.conf",e);
+			return false;
+		}
+		
+	}
+
+	
+}