Add rawDocumentsUri handling to TrampolineActivity.

Test: Build, compiles, does not crash.
Bug: 36033829
Change-Id: I8756c6abd872e4b14cff3c604c37f82323b44c27

3 files changed, 81 insertions, 18 deletions

diff --git a/src/com/android/providers/downloads/DownloadStorageProvider.java b/src/com/android/providers/downloads/DownloadStorageProvider.java
index cbadeb49..8e4d7900 100644
--- a/src/com/android/providers/downloads/DownloadStorageProvider.java
+++ b/src/com/android/providers/downloads/DownloadStorageProvider.java
@@ -61,7 +61,6 @@ import javax.annotation.concurrent.GuardedBy;
  */
 public class DownloadStorageProvider extends FileSystemProvider {
     private static final String TAG = "DownloadStorageProvider";
-    private static final String RAW_PREFIX = "raw:";
     private static final boolean DEBUG = false;
 
     private static final String AUTHORITY = Constants.STORAGE_AUTHORITY;
@@ -135,7 +134,8 @@ public class DownloadStorageProvider extends FileSystemProvider {
         final long token = Binder.clearCallingIdentity();
         try {
             String newDocumentId = super.createDocument(parentDocId, mimeType, displayName);
-            if (!Document.MIME_TYPE_DIR.equals(mimeType) && !isRawDocId(parentDocId)) {
+            if (!Document.MIME_TYPE_DIR.equals(mimeType)
+                    && !RawDocumentsHelper.isRawDocId(parentDocId)) {
                 File newFile = getFileForDocId(newDocumentId);
                 newDocumentId = Long.toString(mDm.addCompletedDownload(
                         newFile.getName(), newFile.getName(), true, mimeType,
@@ -153,7 +153,7 @@ public class DownloadStorageProvider extends FileSystemProvider {
         // Delegate to real provider
         final long token = Binder.clearCallingIdentity();
         try {
-            if (isRawDocId(docId)) {
+            if (RawDocumentsHelper.isRawDocId(docId)) {
                 super.deleteDocument(docId);
                 return;
             }
@@ -171,7 +171,7 @@ public class DownloadStorageProvider extends FileSystemProvider {
         final long token = Binder.clearCallingIdentity();
 
         try {
-            if (isRawDocId(docId)) {
+            if (RawDocumentsHelper.isRawDocId(docId)) {
                 return super.renameDocument(docId, displayName);
             }
 
@@ -193,7 +193,7 @@ public class DownloadStorageProvider extends FileSystemProvider {
         final long token = Binder.clearCallingIdentity();
         Cursor cursor = null;
         try {
-            if (isRawDocId(docId)) {
+            if (RawDocumentsHelper.isRawDocId(docId)) {
                 return super.queryDocument(docId, projection);
             }
 
@@ -240,7 +240,7 @@ public class DownloadStorageProvider extends FileSystemProvider {
         final long token = Binder.clearCallingIdentity();
         Cursor cursor = null;
         try {
-            if (isRawDocId(parentDocId)) {
+            if (RawDocumentsHelper.isRawDocId(parentDocId)) {
                 return super.queryChildDocuments(parentDocId, projection, sortOrder);
             }
 
@@ -346,7 +346,7 @@ public class DownloadStorageProvider extends FileSystemProvider {
         // Delegate to real provider
         final long token = Binder.clearCallingIdentity();
         try {
-            if (isRawDocId(docId)) {
+            if (RawDocumentsHelper.isRawDocId(docId)) {
                 return super.openDocument(docId, mode, signal);
             }
 
@@ -368,8 +368,8 @@ public class DownloadStorageProvider extends FileSystemProvider {
 
     @Override
     protected File getFileForDocId(String docId, boolean visible) throws FileNotFoundException {
-        if (isRawDocId(docId)) {
-            return new File(getAbsoluteFilePath(docId));
+        if (RawDocumentsHelper.isRawDocId(docId)) {
+            return new File(RawDocumentsHelper.getAbsoluteFilePath(docId));
         }
 
         if (DOC_ID_ROOT.equals(docId)) {
@@ -398,7 +398,7 @@ public class DownloadStorageProvider extends FileSystemProvider {
 
     @Override
     protected String getDocIdForFile(File file) throws FileNotFoundException {
-        return RAW_PREFIX + file.getAbsolutePath();
+        return RawDocumentsHelper.getDocIdForFile(file);
     }
 
     @Override
@@ -414,9 +414,7 @@ public class DownloadStorageProvider extends FileSystemProvider {
                 Document.FLAG_DIR_PREFERS_LAST_MODIFIED | Document.FLAG_DIR_SUPPORTS_CREATE);
     }
 
-    private static String getAbsoluteFilePath(String rawDocumentId) {
-        return rawDocumentId.substring(RAW_PREFIX.length());
-    }
+
 
     /**
      * Adds the entry from the cursor to the result only if the entry is valid. That is,
@@ -540,10 +538,6 @@ public class DownloadStorageProvider extends FileSystemProvider {
         includeFile(result, null, file);
     }
 
-    private boolean isRawDocId(String docId) {
-        return docId != null && docId.startsWith(RAW_PREFIX);
-    }
-
     private static File getDownloadsDirectory() {
         return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
     }
diff --git a/src/com/android/providers/downloads/OpenHelper.java b/src/com/android/providers/downloads/OpenHelper.java
index 69a44922..31561ff2 100644
--- a/src/com/android/providers/downloads/OpenHelper.java
+++ b/src/com/android/providers/downloads/OpenHelper.java
@@ -28,6 +28,7 @@ import android.content.ActivityNotFoundException;
 import android.content.ContentUris;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageInstaller;
 import android.database.Cursor;
 import android.net.Uri;
 import android.provider.DocumentsContract;
@@ -132,7 +133,7 @@ public class OpenHelper {
                 cursor.close();
             }
         }
-        return -1;
+        return PackageInstaller.SessionParams.UID_UNKNOWN;
     }
 
     private static String getCursorString(Cursor cursor, String column) {
diff --git a/src/com/android/providers/downloads/RawDocumentsHelper.java b/src/com/android/providers/downloads/RawDocumentsHelper.java
new file mode 100644
index 00000000..9b14cdd2
--- /dev/null
+++ b/src/com/android/providers/downloads/RawDocumentsHelper.java
@@ -0,0 +1,68 @@
+/*
+ * 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.providers.downloads;
+
+import static com.android.providers.downloads.Constants.TAG;
+
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageInstaller;
+import android.net.Uri;
+import android.util.Log;
+
+import java.io.File;
+
+/**
+ * Contains helper methods to convert between raw document ids and their file-system file paths.
+ */
+public class RawDocumentsHelper {
+    /** The default prefix to raw file documentIds */
+    public static final String RAW_PREFIX = "raw:";
+
+    public static boolean isRawDocId(String docId) {
+        return docId != null && docId.startsWith(RAW_PREFIX);
+    }
+
+    public static String getDocIdForFile(File file) {
+        return RAW_PREFIX + file.getAbsolutePath();
+    }
+
+    public static String getAbsoluteFilePath(String rawDocumentId) {
+        return rawDocumentId.substring(RAW_PREFIX.length());
+    }
+
+    /**
+     * Build and start an {@link Intent} to view the download with given raw documentId.
+     */
+    public static boolean startViewIntent(Context context, Uri documentUri) {
+        final Intent intent = new Intent(Intent.ACTION_VIEW);
+        intent.setData(documentUri);
+        intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION
+                | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+        intent.putExtra(Intent.EXTRA_ORIGINATING_UID, PackageInstaller.SessionParams.UID_UNKNOWN);
+
+        try {
+            context.startActivity(intent);
+            return true;
+        } catch (ActivityNotFoundException e) {
+            Log.w(TAG, "Failed to start " + intent + ": " + e);
+            return false;
+        }
+    }
+
+}