/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.wifi;
import com.android.settings.R;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.Resources;
import android.net.NetworkInfo.DetailedState;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiConfiguration.AuthAlgorithm;
import android.net.wifi.WifiConfiguration.KeyMgmt;
import android.net.wifi.WifiInfo;
import android.os.Bundle;
import android.security.Credentials;
import android.security.KeyStore;
import android.text.Editable;
import android.text.InputType;
import android.text.TextWatcher;
import android.text.format.Formatter;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.Spinner;
import android.widget.TextView;
class WifiDialog extends AlertDialog implements View.OnClickListener,
TextWatcher, AdapterView.OnItemSelectedListener {
private static final String KEYSTORE_SPACE = "keystore://";
static final int BUTTON_SUBMIT = DialogInterface.BUTTON_POSITIVE;
static final int BUTTON_FORGET = DialogInterface.BUTTON_NEUTRAL;
final boolean edit;
private final DialogInterface.OnClickListener mListener;
private final AccessPoint mAccessPoint;
private View mView;
private TextView mSsid;
private int mSecurity;
private TextView mPassword;
private Spinner mEapMethod;
private Spinner mEapCaCert;
private Spinner mPhase2;
private Spinner mEapUserCert;
private TextView mEapIdentity;
private TextView mEapAnonymous;
static boolean requireKeyStore(WifiConfiguration config) {
String values[] = {config.ca_cert.value(), config.client_cert.value(),
config.private_key.value()};
for (String value : values) {
if (value != null && value.startsWith(KEYSTORE_SPACE)) {
return true;
}
}
return false;
}
WifiDialog(Context context, DialogInterface.OnClickListener listener,
AccessPoint accessPoint, boolean edit) {
super(context);
this.edit = edit;
mListener = listener;
mAccessPoint = accessPoint;
mSecurity = (accessPoint == null) ? AccessPoint.SECURITY_NONE : accessPoint.security;
}
WifiConfiguration getConfig() {
if (mAccessPoint != null && mAccessPoint.networkId != -1 && !edit) {
return null;
}
WifiConfiguration config = new WifiConfiguration();
if (mAccessPoint == null) {
config.SSID = AccessPoint.convertToQuotedString(
mSsid.getText().toString());
// If the user adds a network manually, assume that it is hidden.
config.hiddenSSID = true;
} else if (mAccessPoint.networkId == -1) {
config.SSID = AccessPoint.convertToQuotedString(
mAccessPoint.ssid);
} else {
config.networkId = mAccessPoint.networkId;
}
switch (mSecurity) {
case AccessPoint.SECURITY_NONE:
config.allowedKeyManagement.set(KeyMgmt.NONE);
return config;
case AccessPoint.SECURITY_WEP:
config.allowedKeyManagement.set(KeyMgmt.NONE);
config.allowedAuthAlgorithms.set(AuthAlgorithm.OPEN);
config.allowedAuthAlgorithms.set(AuthAlgorithm.SHARED);
if (mPassword.length() != 0) {
int length = mPassword.length();
String password = mPassword.getText().toString();
// WEP-40, WEP-104, and 256-bit WEP (WEP-232?)
if ((length == 10 || length == 26 || length == 58) &&
password.matches("[0-9A-Fa-f]*")) {
config.wepKeys[0] = password;
} else {
config.wepKeys[0] = '"' + password + '"';
}
}
return config;
case AccessPoint.SECURITY_PSK:
config.allowedKeyManagement.set(KeyMgmt.WPA_PSK);
if (mPassword.length() != 0) {
String password = mPassword.getText().toString();
if (password.matches("[0-9A-Fa-f]{64}")) {
config.preSharedKey = password;
} else {
config.preSharedKey = '"' + password + '"';
}
}
return config;
case AccessPoint.SECURITY_EAP:
config.allowedKeyManagement.set(KeyMgmt.WPA_EAP);
config.allowedKeyManagement.set(KeyMgmt.IEEE8021X);
config.eap.setValue((String) mEapMethod.getSelectedItem());
config.phase2.setValue((mPhase2.getSelectedItemPosition() == 0) ? "" :
"auth=" + mPhase2.getSelectedItem());
config.ca_cert.setValue((mEapCaCert.getSelectedItemPosition() == 0) ? "" :
KEYSTORE_SPACE + Credentials.CA_CERTIFICATE +
(String) mEapCaCert.getSelectedItem());
config.client_cert.setValue((mEapUserCert.getSelectedItemPosition() == 0) ? "" :
KEYSTORE_SPACE + Credentials.USER_CERTIFICATE +
(String) mEapUserCert.getSelectedItem());
config.private_key.setValue((mEapUserCert.getSelectedItemPosition() == 0) ? "" :
KEYSTORE_SPACE + Credentials.USER_PRIVATE_KEY +
(String) mEapUserCert.getSelectedItem());
config.identity.setValue((mEapIdentity.length() == 0) ? "" :
mEapIdentity.getText().toString());
config.anonymous_identity.setValue((mEapAnonymous.length() == 0) ? "" :
mEapAnonymous.getText().toString());
if (mPassword.length() != 0) {
config.password.setValue(mPassword.getText().toString());
}
return config;
}
return null;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
mView = getLayoutInflater().inflate(R.layout.wifi_dialog, null);
setView(mView);
setInverseBackgroundForced(true);
Context context = getContext();
Resources resources = context.getResources();
if (mAccessPoint == null) {
setTitle(R.string.wifi_add_network);
mView.findViewById(R.id.type).setVisibility(View.VISIBLE);
mSsid = (TextView) mView.findViewById(R.id.ssid);
mSsid.addTextChangedListener(this);
((Spinner) mView.findViewById(R.id.security)).setOnItemSelectedListener(this);
setButton(BUTTON_SUBMIT, context.getString(R.string.wifi_save), mListener);
} else {
setTitle(mAccessPoint.ssid);
ViewGroup group = (ViewGroup) mView.findViewById(R.id.info);
DetailedState state = mAccessPoint.getState();
if (state != null) {
addRow(group, R.string.wifi_status, Summary.get(getContext(), state));
}
String[] type = resources.getStringArray(R.array.wifi_security);
addRow(group, R.string.wifi_security, type[mAccessPoint.security]);
int level = mAccessPoint.getLevel();
if (level != -1) {
String[] signal = resources.getStringArray(R.array.wifi_signal);
addRow(group, R.string.wifi_signal, signal[level]);
}
WifiInfo info = mAccessPoint.getInfo();
if (info != null) {
addRow(group, R.string.wifi_speed, info.getLinkSpeed() + WifiInfo.LINK_SPEED_UNITS);
// TODO: fix the ip address for IPv6.
int address = info.getIpAddress();
if (address != 0) {
addRow(group, R.string.wifi_ip_address, Formatter.formatIpAddress(address));
}
}
if (mAccessPoint.networkId == -1 || edit) {
showSecurityFields();
}
if (edit) {
setButton(BUTTON_SUBMIT, context.getString(R.string.wifi_save), mListener);
} else {
if (state == null && level != -1) {
setButton(BUTTON_SUBMIT, context.getString(R.string.wifi_connect), mListener);
}
if (mAccessPoint.networkId != -1) {
setButton(BUTTON_FORGET, context.getString(R.string.wifi_forget), mListener);
}
}
}
setButton(DialogInterface.BUTTON_NEGATIVE,
context.getString(R.string.wifi_cancel), mListener);
super.onCreate(savedInstanceState);
if (getButton(BUTTON_SUBMIT) != null) {
validate();
}
}
private void addRow(ViewGroup group, int name, String value) {
View row = getLayoutInflater().inflate(R.layout.wifi_dialog_row, group, false);
((TextView) row.findViewById(R.id.name)).setText(name);
((TextView) row.findViewById(R.id.value)).setText(value);
group.addView(row);
}
private void validate() {
// TODO: make sure this is complete.
if ((mSsid != null && mSsid.length() == 0) ||
((mAccessPoint == null || mAccessPoint.networkId == -1) &&
((mSecurity == AccessPoint.SECURITY_WEP && mPassword.length() == 0) ||
(mSecurity == AccessPoint.SECURITY_PSK && mPassword.length() < 8)))) {
getButton(BUTTON_SUBMIT).setEnabled(false);
} else {
getButton(BUTTON_SUBMIT).setEnabled(true);
}
}
public void onClick(View view) {
mPassword.setInputType(
InputType.TYPE_CLASS_TEXT | (((CheckBox) view).isChecked() ?
InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD :
InputType.TYPE_TEXT_VARIATION_PASSWORD));
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void afterTextChanged(Editable editable) {
validate();
}
public void onItemSelected(AdapterView parent, View view, int position, long id) {
mSecurity = position;
showSecurityFields();
validate();
}
public void onNothingSelected(AdapterView parent) {
}
private void showSecurityFields() {
if (mSecurity == AccessPoint.SECURITY_NONE) {
mView.findViewById(R.id.fields).setVisibility(View.GONE);
return;
}
mView.findViewById(R.id.fields).setVisibility(View.VISIBLE);
if (mPassword == null) {
mPassword = (TextView) mView.findViewById(R.id.password);
mPassword.addTextChangedListener(this);
((CheckBox) mView.findViewById(R.id.show_password)).setOnClickListener(this);
if (mAccessPoint != null && mAccessPoint.networkId != -1) {
mPassword.setHint(R.string.wifi_unchanged);
}
}
if (mSecurity != AccessPoint.SECURITY_EAP) {
mView.findViewById(R.id.eap).setVisibility(View.GONE);
return;
}
mView.findViewById(R.id.eap).setVisibility(View.VISIBLE);
if (mEapMethod == null) {
mEapMethod = (Spinner) mView.findViewById(R.id.method);
mPhase2 = (Spinner) mView.findViewById(R.id.phase2);
mEapCaCert = (Spinner) mView.findViewById(R.id.ca_cert);
mEapUserCert = (Spinner) mView.findViewById(R.id.user_cert);
mEapIdentity = (TextView) mView.findViewById(R.id.identity);
mEapAnonymous = (TextView) mView.findViewById(R.id.anonymous);
loadCertificates(mEapCaCert, Credentials.CA_CERTIFICATE);
loadCertificates(mEapUserCert, Credentials.USER_PRIVATE_KEY);
if (mAccessPoint != null && mAccessPoint.networkId != -1) {
WifiConfiguration config = mAccessPoint.getConfig();
setSelection(mEapMethod, config.eap.value());
setSelection(mPhase2, config.phase2.value());
setCertificate(mEapCaCert, Credentials.CA_CERTIFICATE,
config.ca_cert.value());
setCertificate(mEapUserCert, Credentials.USER_PRIVATE_KEY,
config.private_key.value());
mEapIdentity.setText(config.identity.value());
mEapAnonymous.setText(config.anonymous_identity.value());
}
}
}
private void loadCertificates(Spinner spinner, String prefix) {
String[] certs = KeyStore.getInstance().saw(prefix);
Context context = getContext();
String unspecified = context.getString(R.string.wifi_unspecified);
if (certs == null || certs.length == 0) {
certs = new String[] {unspecified};
} else {
String[] array = new String[certs.length + 1];
array[0] = unspecified;
System.arraycopy(certs, 0, array, 1, certs.length);
certs = array;
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
context, android.R.layout.simple_spinner_item, certs);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
}
private void setCertificate(Spinner spinner, String prefix, String cert) {
prefix = KEYSTORE_SPACE + prefix;
if (cert != null && cert.startsWith(prefix)) {
setSelection(spinner, cert.substring(prefix.length()));
}
}
private void setSelection(Spinner spinner, String value) {
if (value != null) {
ArrayAdapter<String> adapter = (ArrayAdapter<String>) spinner.getAdapter();
for (int i = adapter.getCount() - 1; i >= 0; --i) {
if (value.equals(adapter.getItem(i))) {
spinner.setSelection(i);
break;
}
}
}
}
}