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/*
* Copyright (C) 2012 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 android.telephony;
import android.compat.annotation.UnsupportedAppUsage;
import android.os.Build;
import android.text.TextUtils;
import android.util.Base64;
import android.util.Log;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* A class to log strings to the RADIO LOG.
*
* @hide
*/
public final class Rlog {
private static final boolean USER_BUILD = Build.IS_USER;
private Rlog() {
}
@UnsupportedAppUsage
public static int v(String tag, String msg) {
return Log.println_native(Log.LOG_ID_RADIO, Log.VERBOSE, tag, msg);
}
public static int v(String tag, String msg, Throwable tr) {
return Log.println_native(Log.LOG_ID_RADIO, Log.VERBOSE, tag,
msg + '\n' + Log.getStackTraceString(tr));
}
@UnsupportedAppUsage
public static int d(String tag, String msg) {
return Log.println_native(Log.LOG_ID_RADIO, Log.DEBUG, tag, msg);
}
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
public static int d(String tag, String msg, Throwable tr) {
return Log.println_native(Log.LOG_ID_RADIO, Log.DEBUG, tag,
msg + '\n' + Log.getStackTraceString(tr));
}
@UnsupportedAppUsage
public static int i(String tag, String msg) {
return Log.println_native(Log.LOG_ID_RADIO, Log.INFO, tag, msg);
}
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
public static int i(String tag, String msg, Throwable tr) {
return Log.println_native(Log.LOG_ID_RADIO, Log.INFO, tag,
msg + '\n' + Log.getStackTraceString(tr));
}
@UnsupportedAppUsage
public static int w(String tag, String msg) {
return Log.println_native(Log.LOG_ID_RADIO, Log.WARN, tag, msg);
}
@UnsupportedAppUsage
public static int w(String tag, String msg, Throwable tr) {
return Log.println_native(Log.LOG_ID_RADIO, Log.WARN, tag,
msg + '\n' + Log.getStackTraceString(tr));
}
public static int w(String tag, Throwable tr) {
return Log.println_native(Log.LOG_ID_RADIO, Log.WARN, tag, Log.getStackTraceString(tr));
}
@UnsupportedAppUsage
public static int e(String tag, String msg) {
return Log.println_native(Log.LOG_ID_RADIO, Log.ERROR, tag, msg);
}
@UnsupportedAppUsage
public static int e(String tag, String msg, Throwable tr) {
return Log.println_native(Log.LOG_ID_RADIO, Log.ERROR, tag,
msg + '\n' + Log.getStackTraceString(tr));
}
public static int println(int priority, String tag, String msg) {
return Log.println_native(Log.LOG_ID_RADIO, priority, tag, msg);
}
public static boolean isLoggable(String tag, int level) {
return Log.isLoggable(tag, level);
}
/**
* Redact personally identifiable information for production users.
* @param tag used to identify the source of a log message
* @param pii the personally identifiable information we want to apply secure hash on.
* @return If tag is loggable in verbose mode or pii is null, return the original input.
* otherwise return a secure Hash of input pii
*/
public static String pii(String tag, Object pii) {
String val = String.valueOf(pii);
if (pii == null || TextUtils.isEmpty(val) || isLoggable(tag, Log.VERBOSE)) {
return val;
}
return "[" + secureHash(val.getBytes()) + "]";
}
/**
* Redact personally identifiable information for production users.
* @param enablePiiLogging set when caller explicitly want to enable sensitive logging.
* @param pii the personally identifiable information we want to apply secure hash on.
* @return If enablePiiLogging is set to true or pii is null, return the original input.
* otherwise return a secure Hash of input pii
*/
public static String pii(boolean enablePiiLogging, Object pii) {
String val = String.valueOf(pii);
if (pii == null || TextUtils.isEmpty(val) || enablePiiLogging) {
return val;
}
return "[" + secureHash(val.getBytes()) + "]";
}
/**
* Returns a secure hash (using the SHA1 algorithm) of the provided input.
*
* @return "****" if the build type is user, otherwise the hash
* @param input the bytes for which the secure hash should be computed.
*/
private static String secureHash(byte[] input) {
// Refrain from logging user personal information in user build.
if (USER_BUILD) {
return "****";
}
MessageDigest messageDigest;
try {
messageDigest = MessageDigest.getInstance("SHA-1");
} catch (NoSuchAlgorithmException e) {
return "####";
}
byte[] result = messageDigest.digest(input);
return Base64.encodeToString(
result, Base64.URL_SAFE | Base64.NO_PADDING | Base64.NO_WRAP);
}
}
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