public void scan() throws KuraException {
String line = null;
ProcessStats processStats = null;
BufferedReader br = null;
String sScanCommand = formSupplicantScanCommand(m_iface);
// scan for wireless networks
try {
processStats = LinuxProcessUtil.startWithStats(sScanCommand);
} catch (Exception e) {
throw new KuraException(KuraErrorCode.INTERNAL_ERROR, e);
}
try {
br = new BufferedReader(new InputStreamReader(processStats.getInputStream()));
line = br.readLine();
if ((line == null) || !line.equals("OK")) {
throw new KuraException(KuraErrorCode.INTERNAL_ERROR, sScanCommand + " command failed");
}
} catch (Exception e) {
throw new KuraException(KuraErrorCode.INTERNAL_ERROR, e);
} finally {
try {
br.close();
} catch (Exception e) {
throw new KuraException(KuraErrorCode.INTERNAL_ERROR, e);
}
}
// get scan results
String sScanResultsCommand = formSupplicantScanResultsCommand(m_iface);
try {
processStats = LinuxProcessUtil.startWithStats(sScanResultsCommand);
} catch (Exception e) {
throw new KuraException(KuraErrorCode.INTERNAL_ERROR, e);
}
try {
br = new BufferedReader(new InputStreamReader(processStats.getInputStream()));
String[] aScanInfo = null;
while ((line = br.readLine()) != null) {
aScanInfo = line.split("\\s+");
if (aScanInfo.length > 0) {
String macAddress = aScanInfo[0];
int frequency = Integer.parseInt(aScanInfo[1]);
int signalLevel = Integer.parseInt(aScanInfo[2]);
int securityCode = 0;
String sSecurity =
aScanInfo[3].substring(aScanInfo[3].indexOf("[") + 1, aScanInfo[3].lastIndexOf(']'));
StringTokenizer st = new StringTokenizer(sSecurity, "][");
while (st.hasMoreTokens()) {
String token = st.nextToken();
if (token.startsWith("WEP")) {
securityCode |= 1;
} else if (token.startsWith("WPA2")) {
securityCode |= 4;
} else if (token.startsWith("WPA")) {
securityCode |= 2;
}
}
WifiSecurity wifiSecurity = null;
switch (securityCode) {
case 1:
wifiSecurity = WifiSecurity.SECURITY_WEP;
break;
case 2:
wifiSecurity = WifiSecurity.SECURITY_WPA;
break;
case 4:
wifiSecurity = WifiSecurity.SECURITY_WPA2;
break;
case 6:
wifiSecurity = WifiSecurity.SECURITY_WPA_WPA2;
break;
default:
wifiSecurity = WifiSecurity.NONE;
}
String ssid = aScanInfo[4];
WifiHotspotInfo wifiHotspotInfo =
new WifiHotspotInfo(
ssid,
macAddress,
signalLevel,
frequencyMhz2Channel(frequency),
frequency,
wifiSecurity);
m_listWifiHotspotInfo.add(wifiHotspotInfo);
}
}
} catch (Exception e) {
throw new KuraException(KuraErrorCode.INTERNAL_ERROR, e);
} finally {
try {
br.close();
} catch (Exception e) {
throw new KuraException(KuraErrorCode.INTERNAL_ERROR, e);
}
}
}
