private int validateIpConfigFields(LinkProperties linkProperties) {
if (mIpAddressView == null) return 0;
String ipAddr = mIpAddressView.getText().toString();
if (TextUtils.isEmpty(ipAddr)) return R.string.wifi_ip_settings_invalid_ip_address;
InetAddress inetAddr = null;
try {
inetAddr = NetworkUtils.numericToInetAddress(ipAddr);
} catch (IllegalArgumentException e) {
return R.string.wifi_ip_settings_invalid_ip_address;
}
int networkPrefixLength = -1;
try {
networkPrefixLength = Integer.parseInt(mNetworkPrefixLengthView.getText().toString());
if (networkPrefixLength < 0 || networkPrefixLength > 32) {
return R.string.wifi_ip_settings_invalid_network_prefix_length;
}
linkProperties.addLinkAddress(new LinkAddress(inetAddr, networkPrefixLength));
} catch (NumberFormatException e) {
// Set the hint as default after user types in ip address
mNetworkPrefixLengthView.setText(
mConfigUi.getContext().getString(R.string.wifi_network_prefix_length_hint));
}
String gateway = mGatewayView.getText().toString();
if (TextUtils.isEmpty(gateway)) {
try {
// Extract a default gateway from IP address
InetAddress netPart = NetworkUtils.getNetworkPart(inetAddr, networkPrefixLength);
byte[] addr = netPart.getAddress();
addr[addr.length - 1] = 1;
mGatewayView.setText(InetAddress.getByAddress(addr).getHostAddress());
} catch (RuntimeException ee) {
} catch (java.net.UnknownHostException u) {
}
} else {
InetAddress gatewayAddr = null;
try {
gatewayAddr = NetworkUtils.numericToInetAddress(gateway);
} catch (IllegalArgumentException e) {
return R.string.wifi_ip_settings_invalid_gateway;
}
linkProperties.addRoute(new RouteInfo(gatewayAddr));
}
String dns = mDns1View.getText().toString();
InetAddress dnsAddr = null;
if (TextUtils.isEmpty(dns)) {
// If everything else is valid, provide hint as a default option
mDns1View.setText(mConfigUi.getContext().getString(R.string.wifi_dns1_hint));
} else {
try {
dnsAddr = NetworkUtils.numericToInetAddress(dns);
} catch (IllegalArgumentException e) {
return R.string.wifi_ip_settings_invalid_dns;
}
linkProperties.addDns(dnsAddr);
}
if (mDns2View.length() > 0) {
dns = mDns2View.getText().toString();
try {
dnsAddr = NetworkUtils.numericToInetAddress(dns);
} catch (IllegalArgumentException e) {
return R.string.wifi_ip_settings_invalid_dns;
}
linkProperties.addDns(dnsAddr);
}
return 0;
}
