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//
// Copyright 2017, 2018 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.network;
import fil.libre.repwifiapp.helpers.Logger;
import fil.libre.repwifiapp.helpers.RootCommand;
public abstract class WpaCli {
private static final int SCAN_WAIT_INTERVAL = 4;
private static final String BASE_COMMAND = "wpa_cli -p" + WpaSupplicant.SOCKET_DIR + " -P"
+ WpaSupplicant.PID_FILE + " -i" + WpaSupplicant.INTERFACE_NAME;
public static String createNetworkGetId() {
try {
RootCommand su = new RootCommand(BASE_COMMAND + " add_network");
if (su.execute() == 0) {
String out = su.getOutput();
if (out == null || out.trim().equals("")) {
return null;
} else {
return out.replace("\n", "");
}
} else {
return null;
}
} catch (Exception e) {
Logger.logError("Error while creating network", e);
return null;
}
}
public static boolean setNetworkSSID(String ssid, String networkID) {
try {
// needs root (wpa_cli)
return executeCmd(BASE_COMMAND + " set_network " + networkID + " ssid '\""
+ escapeSingleQuotes(ssid) + "\"'");
} catch (Exception e) {
Logger.logError("Error while setting network SSID", e);
return false;
}
}
public static boolean setNetworkPSK(AccessPointInfo info, String networkID) {
try {
// needs root (wpa_cli)
String cmdSetPass = null;
if (info.needsPassword()) {
cmdSetPass = BASE_COMMAND + " set_network " + networkID + " psk '\""
+ escapeSingleQuotes(info.getPassword()) + "\"'";
} else {
cmdSetPass = BASE_COMMAND + " set_network " + networkID + " key_mgmt NONE";
}
return executeCmd(cmdSetPass);
} catch (Exception e) {
Logger.logError("Error while setting network PSK", e);
return false;
}
}
public static boolean setNetworkScanSSID(String networkID) {
try {
// needs root (wpa_cli)
return executeCmd(BASE_COMMAND + " set_network " + networkID + " scan_ssid 1");
} catch (Exception e) {
Logger.logError("Error while setting network SSID", e);
return false;
}
}
public static boolean selectNetwork(String networkID) {
try {
// needs root (wpa_cli)
return executeCmd(BASE_COMMAND + " select_network " + networkID);
} catch (Exception e) {
Logger.logError("Error while selecting network", e);
return false;
}
}
public static boolean enableNetwork(String networkID) {
try {
// needs root (wpa_cli)
return executeCmd(BASE_COMMAND + " enable_network " + networkID);
} catch (Exception e) {
Logger.logError("Error while enabling network", e);
return false;
}
}
public static boolean scanNetworks() {
// needs root (for wpa_supplicant and wpa_cli)
return RootCommand.executeRootCmd(BASE_COMMAND
+ " scan; if [ $? -ne 0 ]; then exit 1; fi; sleep " + SCAN_WAIT_INTERVAL);
}
public static String getScanResults() {
try {
RootCommand su = new RootCommand(BASE_COMMAND
+ " scan_results; if [ $? -ne 0 ]; then exit 1; fi ");
if (su.execute() == 0) {
String out = su.getOutput();
if (out == null || out.trim().equals("")) {
return null;
} else {
return out;
}
} else {
return null;
}
} catch (Exception e) {
Logger.logError("Error while executing wpa_cli status", e);
return null;
}
}
/***
* returns null if unable to determine connection status for any reason.
*/
public static ConnectionStatus getConnectionStatus() {
Logger.logDebug("called getConnecitonStatus()");
if (!WpaSupplicant.isRunning()) {
// wpa_supplicant is not running.
// unable to determine status.
Logger.logDebug("wpa not running, cannot get connection status.");
return null;
}
try {
RootCommand su = new RootCommand(BASE_COMMAND + " status");
if (su.execute() == 0) {
String out = su.getOutput();
if (out == null || out.trim().equals("")) {
return null;
} else {
return ConnectionStatus.parseWpaCliOutput(out);
}
} else {
return null;
}
} catch (Exception e) {
Logger.logError("Error while executing wpa_cli status", e);
return null;
}
}
public static boolean disconnect() {
// needs root (for wpa_cli)
if (!WpaSupplicant.isRunning()) {
return true;
}
try {
return executeCmd(BASE_COMMAND + " disconnect");
} catch (Exception e) {
Logger.logError("Error while enabling network", e);
return false;
}
}
public static boolean terminateSupplicant() {
if (!WpaSupplicant.isRunning()) {
return true;
}
try {
return executeCmd(BASE_COMMAND + " terminate");
} catch (Exception e) {
Logger.logError("Error while enabling network", e);
return false;
}
}
private static boolean executeCmd(String cmdTxt) throws Exception {
RootCommand su = new RootCommand(cmdTxt);
if (su.execute() == 0) {
String out = su.getOutput();
if (out != null && out.trim().replace("\n", "").equals("OK")) {
return true;
} else {
return false;
}
} else {
return false;
}
}
private static String escapeSingleQuotes(String target) {
if (target == null)
return "";
return target.replace("'", "'\"'\"'");
}
}
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