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Show QR Code picture for WiFi sharing

Browse Source 
Bug: 118794858
Test: make RunSettingsRoboTests
Change-Id: Ic5a489840ba59262eb444f02d77bf066889a4220
This commit is contained in:
Johnson Lu
2018-12-20 15:02:50 +08:00
committed by Arc Wang
parent feb271378c
commit 7414543635
7 changed files with 204 additions and 13 deletions
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4
src/com/android/settings/wifi/details/WifiDetailPreferenceController.java
View File

@@ -549,8 +549,8 @@ public class WifiDetailPreferenceController extends AbstractPreferenceController
* Show QR code to share the network represented by this preference.
*/
public void launchQRCodeGenerator() {
Intent intent = WifiDppUtils.getConfiguratorQrCodeGeneratorIntent(mAccessPoint.getSsidStr(),
mAccessPoint.getSecurityString(/* concise */ false));
Intent intent = WifiDppUtils.getConfiguratorQrCodeGeneratorIntent(mContext, mWifiManager,
mAccessPoint);
mContext.startActivity(intent);
}

32
src/com/android/settings/wifi/dpp/WifiDppQrCodeGeneratorFragment.java
View File

@@ -18,19 +18,31 @@ package com.android.settings.wifi.dpp;
import android.app.ActionBar;
import android.content.Context;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import com.android.internal.logging.nano.MetricsProto;
import com.android.settings.R;
import com.android.settings.wifi.qrcode.QrCodeGenerator;
import com.google.zxing.WriterException;
/**
* After sharing a saved Wi-Fi network, {@code WifiDppConfiguratorActivity} start with this fragment
* to generate a Wi-Fi DPP QR code for other device to initiate as an enrollee.
*/
public class WifiDppQrCodeGeneratorFragment extends WifiDppQrCodeBaseFragment {
private static final String TAG = "WifiDppQrCodeGeneratorFragment";
private ImageView mQrCodeView;
private String mQrCode;
@Override
protected int getLayout() {
return R.layout.wifi_dpp_qrcode_generator_fragment;
@@ -67,6 +79,9 @@ public class WifiDppQrCodeGeneratorFragment extends WifiDppQrCodeBaseFragment {
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.show();
}
mQrCode = wifiNetworkConfig.getQrCode();
setQrCode();
}
@Override
@@ -102,4 +117,21 @@ public class WifiDppQrCodeGeneratorFragment extends WifiDppQrCodeBaseFragment {
return super.onOptionsItemSelected(menuItem);
}
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mQrCodeView = view.findViewById(R.id.qrcode_view);
}
private void setQrCode() {
try {
final int qrcodeSize = getContext().getResources().getDimensionPixelSize(
R.dimen.qrcode_size);
final Bitmap bmp = QrCodeGenerator.encodeQrCode(mQrCode, qrcodeSize);
mQrCodeView.setImageBitmap(bmp);
} catch (WriterException e) {
Log.e(TAG, "Error generatting QR code bitmap " + e);
}
}
}

80
src/com/android/settings/wifi/dpp/WifiDppUtils.java
View File

@@ -18,9 +18,15 @@ package com.android.settings.wifi.dpp;
import android.content.Context;
import android.content.Intent;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.text.TextUtils;
import android.util.FeatureFlagUtils;
import com.android.settingslib.wifi.AccessPoint;
import java.util.List;
/**
* Here are the items shared by both WifiDppConfiguratorActivity & WifiDppEnrolleeActivity
*/
@@ -84,23 +90,81 @@ public class WifiDppUtils {
return intent;
}
private static String getPresharedKey(WifiManager wifiManager, WifiConfiguration config) {
String preSharedKey = config.preSharedKey;
final List<WifiConfiguration> wifiConfigs = wifiManager.getPrivilegedConfiguredNetworks();
for (WifiConfiguration wifiConfig : wifiConfigs) {
if (wifiConfig.networkId == config.networkId) {
preSharedKey = wifiConfig.preSharedKey;
break;
}
}
return preSharedKey;
}
private static String removeFirstAndLastDoubleQuotes(String str) {
if (TextUtils.isEmpty(str)) {
return str;
}
int begin = 0;
int end = str.length() - 1;
if (str.charAt(begin) == '\"') {
begin++;
}
if (str.charAt(end) == '\"') {
end--;
}
return str.substring(begin, end+1);
}
private static String getSecurityString(AccessPoint accessPoint) {
switch(accessPoint.getSecurity()) {
case AccessPoint.SECURITY_WEP:
return "WEP";
case AccessPoint.SECURITY_PSK:
return "WPA";
default:
return "nopass";
}
}
/**
* Returns an intent to launch QR code generator.
*
* @param ssid The data corresponding to {@code WifiConfiguration} SSID
* @param Security The data is from {@code AccessPoint.securityToString}
* @param context The context to use for the content resolver
* @param wifiManager An instance of {@link WifiManager}
* @param accessPoint An instance of {@link AccessPoint}
* @return Intent for launching QR code generator
*/
public static Intent getConfiguratorQrCodeGeneratorIntent(String ssid, String Security) {
//TODO: b/118794858#comment6 should put password & hideSsid in intent extra
final Intent intent = new Intent(
WifiDppConfiguratorActivity.ACTION_CONFIGURATOR_QR_CODE_GENERATOR);
public static Intent getConfiguratorQrCodeGeneratorIntent(Context context,
WifiManager wifiManager, AccessPoint accessPoint) {
final Intent intent = new Intent(context, WifiDppConfiguratorActivity.class);
intent.setAction(WifiDppConfiguratorActivity.ACTION_CONFIGURATOR_QR_CODE_GENERATOR);
final WifiConfiguration wifiConfig = accessPoint.getConfig();
final String ssid = removeFirstAndLastDoubleQuotes(wifiConfig.SSID);
final String security = getSecurityString(accessPoint);
String preSharedKey = wifiConfig.preSharedKey;
if (preSharedKey != null) {
// When the value of this key is read, the actual key is not returned, just a "*".
// Call privileged system API to obtain actual key.
preSharedKey = removeFirstAndLastDoubleQuotes(getPresharedKey(wifiManager, wifiConfig));
}
if (!TextUtils.isEmpty(ssid)) {
intent.putExtra(EXTRA_WIFI_SSID, ssid);
}
if (!TextUtils.isEmpty(Security)) {
intent.putExtra(EXTRA_WIFI_SECURITY, Security);
if (!TextUtils.isEmpty(security)) {
intent.putExtra(EXTRA_WIFI_SECURITY, security);
}
if (!TextUtils.isEmpty(preSharedKey)) {
intent.putExtra(EXTRA_WIFI_PRE_SHARED_KEY, preSharedKey);
}
return intent;
}
}

45
src/com/android/settings/wifi/dpp/WifiNetworkConfig.java
View File

@@ -119,6 +119,51 @@ public class WifiNetworkConfig {
return true;
}
/**
* Escaped special characters "\", ";", ":", "," with a backslash
* See https://github.com/zxing/zxing/wiki/Barcode-Contents
*/
private String escapeSpecialCharacters(String str) {
if (TextUtils.isEmpty(str)) {
return str;
}
StringBuilder buf = new StringBuilder();
for (int i = 0; i < str.length(); i++) {
char ch = str.charAt(i);
if (ch =='\\' || ch == ',' || ch == ';' || ch == ':') {
buf.append('\\');
}
buf.append(ch);
}
return buf.toString();
}
/**
* Construct a barcode string for WiFi network login.
* See https://en.wikipedia.org/wiki/QR_code#WiFi_network_login
*/
public String getQrCode() {
final String empty = "";
String barcode = new StringBuilder("WIFI:")
.append("S:")
.append(escapeSpecialCharacters(mSsid))
.append(";")
.append("T:")
.append(TextUtils.isEmpty(mSecurity) ? empty : mSecurity)
.append(";")
.append("P:")
.append(TextUtils.isEmpty(mPreSharedKey) ? empty
: escapeSpecialCharacters(mPreSharedKey))
.append(";")
.append("H:")
.append(mHiddenSsid)
.append(";;")
.toString();
return barcode;
}
@Keep
public String getSecurity() {
return mSecurity;