1 files changed, 107 insertions, 0 deletions
diff --git a/src/com/android/tv/data/epg/EpgInputAllowList.java b/src/com/android/tv/data/epg/EpgInputAllowList.java
new file mode 100644
index 00000000..7ef52f8b
--- /dev/null
+++ b/src/com/android/tv/data/epg/EpgInputAllowList.java
@@ -0,0 +1,107 @@
+/*
+ * 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.text.TextUtils;
+import android.util.Log;
+
+import com.android.tv.common.BuildConfig;
+
+import com.google.common.collect.ImmutableSet;
+
+import com.android.tv.common.flags.CloudEpgFlags;
+import com.android.tv.common.flags.LegacyFlags;
+
+import java.util.List;
+
+import javax.inject.Inject;
+
+/** Checks if a package or a input is allowed. */
+public final class EpgInputAllowList {
+    private static final boolean DEBUG = false;
+    private static final String TAG = "EpgInputAllowList";
+    private static final ImmutableSet<String> QA_DEV_INPUTS =
+            ImmutableSet.of(
+                    "com.example.partnersupportsampletvinput/.SampleTvInputService",
+                    "com.android.tv.tuner.sample.dvb/.tvinput.SampleDvbTunerTvInputService");
+    private final LegacyFlags mLegacyFlags;
+
+    /** 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 CloudEpgFlags mCloudEpgFlags;
+
+    @Inject
+    public EpgInputAllowList(CloudEpgFlags cloudEpgFlags, LegacyFlags legacyFlags) {
+        mCloudEpgFlags = cloudEpgFlags;
+        mLegacyFlags = legacyFlags;
+    }
+
+    public boolean isInputAllowed(String inputId) {
+        return getAllowedInputs().contains(inputId);
+    }
+
+    public boolean isPackageAllowed(String packageName) {
+        if (DEBUG) Log.d(TAG, "isPackageAllowed " + packageName);
+        ImmutableSet<String> allowedInputs = getAllowedInputs();
+        for (String allowed : allowedInputs) {
+            try {
+                String allowedPackage = getPackageFromInput(allowed);
+                if (allowedPackage.equals(packageName)) {
+                    return true;
+                }
+            } catch (Exception e) {
+                if (DEBUG) Log.d(TAG, "Error parsing package name of " + allowed, e);
+                continue;
+            }
+        }
+        return false;
+    }
+
+    private ImmutableSet<String> getAllowedInputs() {
+        ImmutableSet<String> result =
+                toInputSet(mCloudEpgFlags.thirdPartyEpgInputs().getElementList());
+        if (BuildConfig.ENG || mLegacyFlags.enableQaFeatures()) {
+            if (result.isEmpty()) {
+                result = QA_DEV_INPUTS;
+            } else {
+                result =
+                        ImmutableSet.<String>builder().addAll(result).addAll(QA_DEV_INPUTS).build();
+            }
+        }
+        if (DEBUG) Log.d(TAG, "getAllowedInputs " + result);
+        return result;
+    }
+
+    private static ImmutableSet<String> toInputSet(List<String> strings) {
+        if (strings.isEmpty()) {
+            return ImmutableSet.of();
+        }
+        ImmutableSet.Builder<String> result = ImmutableSet.builder();
+        for (String s : strings) {
+            String trimmed = s.trim();
+            if (!TextUtils.isEmpty(trimmed)) {
+                result.add(trimmed);
+            }
+        }
+        return result.build();
+    }
+}