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//
// 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;
}
}
}
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