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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 java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
public abstract class Engine implements IEngine {
@Override
public AccessPointInfo[] getAvailableNetworks() {
Utils.logDebug("getAvailableNetworks():");
if (!WpaSupplicant.start()) {
Utils.logError("Failed starting wpa_supplicant");
return null;
}
if (!WpaCli.scanNetworks()) {
Utils.logError("failed scanning networks");
return null;
}
String scanRes = WpaCli.getScanResults();
if (scanRes == null) {
Utils.logError("failed getting scan results");
return null;
}
AccessPointInfo[] a = AccessPointInfo.parseScanResult(scanRes);
if (a == null) {
Utils.logError("Unable to parse scan file into AccessPointInfo array");
return a;
}
Utils.logDebug("# of APs found: " + a.length);
return a;
}
@Override
public abstract boolean connect(AccessPointInfo info);
@Override
public boolean disconnect() {
return WpaCli.disconnect();
}
/***
* returns null if unable to determine connection status for any reason.
*/
@Override
public ConnectionStatus getConnectionStatus() {
return WpaCli.getConnectionStatus();
}
@Override
public boolean isInterfaceAvailable(String ifaceName) throws SocketException {
Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
while (interfaces.hasMoreElements()) {
NetworkInterface nif = interfaces.nextElement();
String nm = nif.getName();
if (nm.equals(ifaceName)) {
return true;
}
}
return false;
}
public boolean runDhcpcd() {
// needs root
// option -w avoids dhcpcd forking to background,
// in order to keep control over its exit code, and be able to wait for it.
// option -A avoids ARP IP checking, we use it to save some seconds in the connection process.
return RootCommand.executeRootCmd("dhcpcd -w -A " + WpaSupplicant.INTERFACE_NAME);
}
public boolean runDhcpcd(DhcpSettings dhcpConfig) {
if (dhcpConfig == null || dhcpConfig.useDhcp){
Utils.logDebug("running dhchpc without dhcp settings, reverting to dhcp");
return runDhcpcd();
}
Utils.logDebug("Running dhcpcd with custom ip settings");
String cmdMask = "dhcpcd -w -A -S ip_address=%s -S routers=%s %s";
String cmd = String.format(cmdMask,
dhcpConfig.getStaticIPwithMask(),
dhcpConfig.getDefaultGateway(),
WpaSupplicant.INTERFACE_NAME);
return RootCommand.executeRootCmd(cmd);
}
public static boolean killDhcpcd(){
return RootCommand.executeRootCmd("killall -SIGINT dhcpcd");
}
public boolean interfaceUp() {
// needs root (tested)
return RootCommand.executeRootCmd("ifconfig " + WpaSupplicant.INTERFACE_NAME + " up");
}
}
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