Add hidden APIs to query and delete shared blobs.

Bug: 150804006
Test: atest --test-mapping apex/blobstore
Change-Id: Ia445715879c1b6ec74c2a2ee9d2ff0eb1f4ee72b

5 files changed, 278 insertions, 3 deletions

diff --git a/apex/blobstore/framework/java/android/app/blob/AccessorInfo.java b/apex/blobstore/framework/java/android/app/blob/AccessorInfo.java
new file mode 100644
index 000000000000..3725ad4a6c09
--- /dev/null
+++ b/apex/blobstore/framework/java/android/app/blob/AccessorInfo.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2020 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.app.blob;
+
+import android.annotation.NonNull;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.List;
+
+/**
+ * Class to provide information about an accessor of a shared blob.
+ *
+ * @hide
+ */
+public final class AccessorInfo implements Parcelable {
+    private final String mPackageName;
+    private final long mExpiryTimeMs;
+    private final int mDescriptionResId;
+    private final CharSequence mDescription;
+
+    public AccessorInfo(String packageName, long expiryTimeMs,
+            int descriptionResId, CharSequence description) {
+        mPackageName = packageName;
+        mExpiryTimeMs = expiryTimeMs;
+        mDescriptionResId = descriptionResId;
+        mDescription = description;
+    }
+
+    private AccessorInfo(Parcel in) {
+        mPackageName = in.readString();
+        mExpiryTimeMs = in.readLong();
+        mDescriptionResId = in.readInt();
+        mDescription = in.readCharSequence();
+    }
+
+    public String getPackageName() {
+        return mPackageName;
+    }
+
+    public long getExpiryTimeMs() {
+        return mExpiryTimeMs;
+    }
+
+    public int getDescriptionResId() {
+        return mDescriptionResId;
+    }
+
+    public CharSequence getDescription() {
+        return mDescription;
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel dest, int flags) {
+        dest.writeString(mPackageName);
+        dest.writeLong(mExpiryTimeMs);
+        dest.writeInt(mDescriptionResId);
+        dest.writeCharSequence(mDescription);
+    }
+
+    @Override
+    public String toString() {
+        return "AccessorInfo {"
+                + "package: " + mPackageName + ","
+                + "expiryMs: " + mExpiryTimeMs + ","
+                + "descriptionResId: " + mDescriptionResId + ","
+                + "description: " + mDescription + ","
+                + "}";
+    }
+
+    private String toShortString() {
+        return mPackageName;
+    }
+
+    public static String toShortString(List<AccessorInfo> accessors) {
+        final StringBuilder sb = new StringBuilder();
+        sb.append("[");
+        for (int i = 0, size = accessors.size(); i < size; ++i) {
+            sb.append(accessors.get(i).toShortString());
+            sb.append(",");
+        }
+        sb.append("]");
+        return sb.toString();
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @NonNull
+    public static final Creator<AccessorInfo> CREATOR = new Creator<AccessorInfo>() {
+        @Override
+        @NonNull
+        public AccessorInfo createFromParcel(Parcel source) {
+            return new AccessorInfo(source);
+        }
+
+        @Override
+        @NonNull
+        public AccessorInfo[] newArray(int size) {
+            return new AccessorInfo[size];
+        }
+    };
+}
diff --git a/apex/blobstore/framework/java/android/app/blob/BlobInfo.aidl b/apex/blobstore/framework/java/android/app/blob/BlobInfo.aidl
new file mode 100644
index 000000000000..25497738f685
--- /dev/null
+++ b/apex/blobstore/framework/java/android/app/blob/BlobInfo.aidl
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2020 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.app.blob;
+
+/** {@hide} */
+parcelable BlobInfo;
\ No newline at end of file
diff --git a/apex/blobstore/framework/java/android/app/blob/BlobInfo.java b/apex/blobstore/framework/java/android/app/blob/BlobInfo.java
new file mode 100644
index 000000000000..9746dd023002
--- /dev/null
+++ b/apex/blobstore/framework/java/android/app/blob/BlobInfo.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2020 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.app.blob;
+
+import android.annotation.NonNull;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Class to provide information about a shared blob.
+ *
+ * @hide
+ */
+public final class BlobInfo implements Parcelable {
+    private final long mId;
+    private final long mExpiryTimeMs;
+    private final CharSequence mLabel;
+    private final List<AccessorInfo> mAccessors;
+
+    public BlobInfo(long id, long expiryTimeMs, CharSequence label,
+            List<AccessorInfo> accessors) {
+        mId = id;
+        mExpiryTimeMs = expiryTimeMs;
+        mLabel = label;
+        mAccessors = accessors;
+    }
+
+    private BlobInfo(Parcel in) {
+        mId = in.readLong();
+        mExpiryTimeMs = in.readLong();
+        mLabel = in.readCharSequence();
+        mAccessors = in.readArrayList(null /* classloader */);
+    }
+
+    public long getId() {
+        return mId;
+    }
+
+    public long getExpiryTimeMs() {
+        return mExpiryTimeMs;
+    }
+
+    public CharSequence getLabel() {
+        return mLabel;
+    }
+
+    public List<AccessorInfo> getAccessors() {
+        return Collections.unmodifiableList(mAccessors);
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel dest, int flags) {
+        dest.writeLong(mId);
+        dest.writeLong(mExpiryTimeMs);
+        dest.writeCharSequence(mLabel);
+        dest.writeList(mAccessors);
+    }
+
+    @Override
+    public String toString() {
+        return toShortString();
+    }
+
+    private String toShortString() {
+        return "BlobInfo {"
+                + "id: " + mId + ","
+                + "expiryMs: " + mExpiryTimeMs + ","
+                + "label: " + mLabel + ","
+                + "accessors: " + AccessorInfo.toShortString(mAccessors) + ","
+                + "}";
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @NonNull
+    public static final Creator<BlobInfo> CREATOR = new Creator<BlobInfo>() {
+        @Override
+        @NonNull
+        public BlobInfo createFromParcel(Parcel source) {
+            return new BlobInfo(source);
+        }
+
+        @Override
+        @NonNull
+        public BlobInfo[] newArray(int size) {
+            return new BlobInfo[size];
+        }
+    };
+}
diff --git a/apex/blobstore/framework/java/android/app/blob/BlobStoreManager.java b/apex/blobstore/framework/java/android/app/blob/BlobStoreManager.java
index d1e28e99b6d6..7af3f662c195 100644
--- a/apex/blobstore/framework/java/android/app/blob/BlobStoreManager.java
+++ b/apex/blobstore/framework/java/android/app/blob/BlobStoreManager.java
@@ -27,11 +27,13 @@ import android.os.ParcelFileDescriptor;
 import android.os.ParcelableException;
 import android.os.RemoteCallback;
 import android.os.RemoteException;
+import android.os.UserHandle;
 
 import com.android.internal.util.function.pooled.PooledLambda;
 
 import java.io.Closeable;
 import java.io.IOException;
+import java.util.List;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.Executor;
 import java.util.concurrent.TimeUnit;
@@ -145,9 +147,6 @@ public class BlobStoreManager {
     /** @hide */
     public static final int INVALID_RES_ID = -1;
 
-    /** @hide */
-    public static final String DESC_RES_TYPE_STRING = "string";
-
     private final Context mContext;
     private final IBlobStoreManager mService;
 
@@ -495,6 +494,31 @@ public class BlobStoreManager {
         }
     }
 
+    /** @hide */
+    @NonNull
+    public List<BlobInfo> queryBlobsForUser(@NonNull UserHandle user) throws IOException {
+        try {
+            return mService.queryBlobsForUser(user.getIdentifier());
+        } catch (ParcelableException e) {
+            e.maybeRethrow(IOException.class);
+            throw new RuntimeException(e);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    /** @hide */
+    public void deleteBlob(@NonNull BlobInfo blobInfo) throws IOException {
+        try {
+            mService.deleteBlob(blobInfo.getId());
+        } catch (ParcelableException e) {
+            e.maybeRethrow(IOException.class);
+            throw new RuntimeException(e);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
     /**
      * Represents an ongoing session of a blob's contribution to the blob store managed by the
      * system.
diff --git a/apex/blobstore/framework/java/android/app/blob/IBlobStoreManager.aidl b/apex/blobstore/framework/java/android/app/blob/IBlobStoreManager.aidl
index a85a25c9c4ad..beeb03f06ed7 100644
--- a/apex/blobstore/framework/java/android/app/blob/IBlobStoreManager.aidl
+++ b/apex/blobstore/framework/java/android/app/blob/IBlobStoreManager.aidl
@@ -16,6 +16,7 @@
 package android.app.blob;
 
 import android.app.blob.BlobHandle;
+import android.app.blob.BlobInfo;
 import android.app.blob.IBlobStoreSession;
 import android.os.RemoteCallback;
 
@@ -31,4 +32,7 @@ interface IBlobStoreManager {
     void releaseLease(in BlobHandle handle, in String packageName);
 
     void waitForIdle(in RemoteCallback callback);
+
+    List<BlobInfo> queryBlobsForUser(int userId);
+    void deleteBlob(long blobId);
 }
\ No newline at end of file