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wifi: Using framework uri parsing

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Bug: 298669190
Test: Manual test. Qr code sacnning works normally.
Change-Id: I8e6138971ae6798b42db32930f80e9113a8c0223
This commit is contained in:
Les Lee
2024-03-22 05:11:08 +00:00
parent a9f137842a
commit 1635951de2
5 changed files with 65 additions and 246 deletions
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147
src/com/android/settings/wifi/dpp/WifiQrCode.java
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@@ -16,14 +16,12 @@
package com.android.settings.wifi.dpp;
import android.annotation.NonNull;
import android.net.wifi.UriParserResults;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiUriParser;
import android.text.TextUtils;
import androidx.annotation.VisibleForTesting;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;
import android.util.Log;
/**
* Supports to parse 2 types of QR code
@@ -70,19 +68,8 @@ public class WifiQrCode {
static final String SECURITY_SAE = "SAE";
private String mQrCode;
/**
* SCHEME_DPP for standard Wi-Fi device provision protocol; SCHEME_ZXING_WIFI_NETWORK_CONFIG
* for ZXing reader library' Wi-Fi Network config format
*/
private String mScheme;
// Data from parsed Wi-Fi DPP QR code
private String mPublicKey;
private String mInformation;
// Data from parsed ZXing reader library's Wi-Fi Network config format
private WifiNetworkConfig mWifiNetworkConfig;
@NonNull
private UriParserResults mUriParserResults;
public WifiQrCode(String qrCode) throws IllegalArgumentException {
if (TextUtils.isEmpty(qrCode)) {
@@ -90,111 +77,14 @@ public class WifiQrCode {
}
mQrCode = qrCode;
if (qrCode.startsWith(PREFIX_DPP)) {
mScheme = SCHEME_DPP;
parseWifiDppQrCode(qrCode);
} else if (qrCode.startsWith(PREFIX_ZXING_WIFI_NETWORK_CONFIG)) {
mScheme = SCHEME_ZXING_WIFI_NETWORK_CONFIG;
parseZxingWifiQrCode(qrCode);
} else {
try {
mUriParserResults = WifiUriParser.parseUri(mQrCode);
Log.i("WifiQrCode", "mUriParserResults = " + mUriParserResults);
} catch (IllegalArgumentException ie) {
throw new IllegalArgumentException("Invalid scheme");
}
}
/** Parses Wi-Fi DPP QR code string */
private void parseWifiDppQrCode(String qrCode) throws IllegalArgumentException {
List<String> keyValueList = getKeyValueList(qrCode, PREFIX_DPP, DELIMITER_QR_CODE);
String publicKey = getValueOrNull(keyValueList, PREFIX_DPP_PUBLIC_KEY);
if (TextUtils.isEmpty(publicKey)) {
throw new IllegalArgumentException("Invalid format");
}
mPublicKey = publicKey;
mInformation = getValueOrNull(keyValueList, PREFIX_DPP_INFORMATION);
}
/** Parses ZXing reader library's Wi-Fi Network config format */
private void parseZxingWifiQrCode(String qrCode) throws IllegalArgumentException {
List<String> keyValueList = getKeyValueList(qrCode, PREFIX_ZXING_WIFI_NETWORK_CONFIG,
DELIMITER_QR_CODE);
String security = getValueOrNull(keyValueList, PREFIX_ZXING_SECURITY);
String ssid = getValueOrNull(keyValueList, PREFIX_ZXING_SSID);
String password = getValueOrNull(keyValueList, PREFIX_ZXING_PASSWORD);
String hiddenSsidString = getValueOrNull(keyValueList, PREFIX_ZXING_HIDDEN_SSID);
boolean hiddenSsid = "true".equalsIgnoreCase(hiddenSsidString);
//"\", ";", "," and ":" are escaped with a backslash "\", should remove at first
security = removeBackSlash(security);
ssid = removeBackSlash(ssid);
password = removeBackSlash(password);
mWifiNetworkConfig = WifiNetworkConfig.getValidConfigOrNull(security, ssid, password,
hiddenSsid, WifiConfiguration.INVALID_NETWORK_ID, /* isHotspot */ false);
if (mWifiNetworkConfig == null) {
throw new IllegalArgumentException("Invalid format");
}
}
/**
* Splits key/value pairs from qrCode
*
* @param qrCode the QR code raw string
* @param prefixQrCode the string before all key/value pairs in qrCode
* @param delimiter the string to split key/value pairs, can't contain a backslash
* @return a list contains string of key/value (e.g. K:key1)
*/
private List<String> getKeyValueList(String qrCode, String prefixQrCode,
String delimiter) {
String keyValueString = qrCode.substring(prefixQrCode.length());
// Should not treat \delimiter as a delimiter
String regex = "(?<!\\\\)" + Pattern.quote(delimiter);
return Arrays.asList(keyValueString.split(regex));
}
private String getValueOrNull(List<String> keyValueList, String prefix) {
for (String keyValue : keyValueList) {
String strippedKeyValue = keyValue.stripLeading();
if (strippedKeyValue.startsWith(prefix)) {
return strippedKeyValue.substring(prefix.length());
}
}
return null;
}
@VisibleForTesting
String removeBackSlash(String input) {
if (input == null) {
return null;
}
StringBuilder sb = new StringBuilder();
boolean backSlash = false;
for (char ch : input.toCharArray()) {
if (ch != '\\') {
sb.append(ch);
backSlash = false;
} else {
if (backSlash) {
sb.append(ch);
backSlash = false;
continue;
}
backSlash = true;
}
}
return sb.toString();
}
String getQrCode() {
return mQrCode;
}
@@ -205,28 +95,23 @@ public class WifiQrCode {
* SCHEME_DPP for standard Wi-Fi device provision protocol; SCHEME_ZXING_WIFI_NETWORK_CONFIG
* for ZXing reader library' Wi-Fi Network config format
*/
public String getScheme() {
return mScheme;
public int getScheme() {
return mUriParserResults.getUriScheme();
}
/** Available when {@code getScheme()} returns SCHEME_DPP */
@VisibleForTesting
String getPublicKey() {
return mPublicKey;
return mUriParserResults.getPublicKey();
}
/** May be available when {@code getScheme()} returns SCHEME_DPP */
public String getInformation() {
return mInformation;
return mUriParserResults.getInformation();
}
/** Available when {@code getScheme()} returns SCHEME_ZXING_WIFI_NETWORK_CONFIG */
WifiNetworkConfig getWifiNetworkConfig() {
if (mWifiNetworkConfig == null) {
return null;
}
return new WifiNetworkConfig(mWifiNetworkConfig);
WifiConfiguration getWifiConfiguration() {
return mUriParserResults.getWifiConfiguration();
}
static WifiQrCode getValidWifiDppQrCodeOrNull(String qrCode) {