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/*
* Copyright (C) 2017 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.tv.data.epg;
import android.support.annotation.Nullable;
import android.support.annotation.VisibleForTesting;
import android.text.TextUtils;
import android.util.Log;
import com.android.tv.common.BuildConfig;
import com.android.tv.common.config.api.RemoteConfig;
import com.android.tv.common.experiments.Experiments;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/** Checks if a package or a input is white listed. */
public final class EpgInputWhiteList {
private static final boolean DEBUG = false;
private static final String TAG = "EpgInputWhiteList";
@VisibleForTesting public static final String KEY = "live_channels_3rd_party_epg_inputs";
private static final String QA_DEV_INPUTS =
"com.example.partnersupportsampletvinput/.SampleTvInputService,"
+ "com.android.tv.tuner.sample.dvb/.tvinput.SampleDvbTunerTvInputService";
/** Returns the package portion of a inputId */
@Nullable
public static String getPackageFromInput(@Nullable String inputId) {
return inputId == null ? null : inputId.substring(0, inputId.indexOf("/"));
}
private final RemoteConfig remoteConfig;
public EpgInputWhiteList(RemoteConfig remoteConfig) {
this.remoteConfig = remoteConfig;
}
public boolean isInputWhiteListed(String inputId) {
return getWhiteListedInputs().contains(inputId);
}
public boolean isPackageWhiteListed(String packageName) {
if (DEBUG) Log.d(TAG, "isPackageWhiteListed " + packageName);
Set<String> whiteList = getWhiteListedInputs();
for (String good : whiteList) {
try {
String goodPackage = getPackageFromInput(good);
if (goodPackage.equals(packageName)) {
return true;
}
} catch (Exception e) {
if (DEBUG) Log.d(TAG, "Error parsing package name of " + good, e);
continue;
}
}
return false;
}
private Set<String> getWhiteListedInputs() {
Set<String> result = toInputSet(remoteConfig.getString(KEY));
if (BuildConfig.ENG || Experiments.ENABLE_QA_FEATURES.get()) {
HashSet<String> moreInputs = new HashSet<>(toInputSet(QA_DEV_INPUTS));
if (result.isEmpty()) {
result = moreInputs;
} else {
result.addAll(moreInputs);
}
}
if (DEBUG) Log.d(TAG, "getWhiteListedInputs " + result);
return result;
}
@VisibleForTesting
static Set<String> toInputSet(String value) {
if (TextUtils.isEmpty(value)) {
return Collections.emptySet();
}
List<String> strings = Arrays.asList(value.split(","));
Set<String> result = new HashSet<>(strings.size());
for (String s : strings) {
String trimmed = s.trim();
if (!TextUtils.isEmpty(trimmed)) {
result.add(trimmed);
}
}
return result;
}
}
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