Merge "Add BugreportStorageProvider"

                android:resource="@xml/file_provider_paths" />

        </provider>

        <provider

            android:name=".BugreportStorageProvider"

            android:authorities="com.android.shell.documents"

            android:grantUriPermissions="true"

            android:exported="true"

            android:permission="android.permission.MANAGE_DOCUMENTS"

            android:enabled="false">

            <intent-filter>

                <action android:name="android.content.action.DOCUMENTS_PROVIDER" />

            </intent-filter>

        </provider>

        <activity

            android:name=".BugreportWarningActivity"

            android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert"

    <string name="bugreport_confirm">Bug reports contain data from the system\'s various log files, including personal and private information.  Only share bug reports with apps and people you trust.</string>

    <!-- Checkbox that indicates this dialog should be shown again when the next bugreport is taken. [CHAR LIMIT=50] -->

    <string name="bugreport_confirm_repeat">Show this message next time</string>

    <!-- Title for documents backend that offers bugreports. -->

    <string name="bugreport_storage_title">Bug reports</string>

</resources>

/*

 * Copyright (C) 2015 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.shell;

import android.database.Cursor;

import android.database.MatrixCursor;

import android.database.MatrixCursor.RowBuilder;

import android.os.CancellationSignal;

import android.os.FileUtils;

import android.os.ParcelFileDescriptor;

import android.provider.DocumentsContract.Document;

import android.provider.DocumentsContract.Root;

import android.provider.DocumentsProvider;

import android.webkit.MimeTypeMap;

import java.io.File;

import java.io.FileNotFoundException;

public class BugreportStorageProvider extends DocumentsProvider {

    private static final String DOC_ID_ROOT = "bugreport";

    private static final String[] DEFAULT_ROOT_PROJECTION = new String[] {

            Root.COLUMN_ROOT_ID, Root.COLUMN_FLAGS, Root.COLUMN_ICON, Root.COLUMN_TITLE,

            Root.COLUMN_DOCUMENT_ID,

    };

    private static final String[] DEFAULT_DOCUMENT_PROJECTION = new String[] {

            Document.COLUMN_DOCUMENT_ID, Document.COLUMN_MIME_TYPE, Document.COLUMN_DISPLAY_NAME,

            Document.COLUMN_LAST_MODIFIED, Document.COLUMN_FLAGS, Document.COLUMN_SIZE,

    };

    private File mRoot;

    @Override

    public boolean onCreate() {

        mRoot = new File(getContext().getFilesDir(), "bugreports");

        return true;

    }

    @Override

    public Cursor queryRoots(String[] projection) throws FileNotFoundException {

        final MatrixCursor result = new MatrixCursor(resolveRootProjection(projection));

        final RowBuilder row = result.newRow();

        row.add(Root.COLUMN_ROOT_ID, DOC_ID_ROOT);

        row.add(Root.COLUMN_FLAGS, Root.FLAG_LOCAL_ONLY | Root.FLAG_ADVANCED);

        row.add(Root.COLUMN_ICON, android.R.mipmap.sym_def_app_icon);

        row.add(Root.COLUMN_TITLE, getContext().getString(R.string.bugreport_storage_title));

        row.add(Root.COLUMN_DOCUMENT_ID, DOC_ID_ROOT);

        return result;

    }

    @Override

    public Cursor queryDocument(String documentId, String[] projection)

            throws FileNotFoundException {

        final MatrixCursor result = new MatrixCursor(resolveDocumentProjection(projection));

        if (DOC_ID_ROOT.equals(documentId)) {

            final RowBuilder row = result.newRow();

            row.add(Document.COLUMN_DOCUMENT_ID, documentId);

            row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR);

            row.add(Document.COLUMN_DISPLAY_NAME, mRoot.getName());

            row.add(Document.COLUMN_LAST_MODIFIED, mRoot.lastModified());

            row.add(Document.COLUMN_FLAGS, Document.FLAG_DIR_PREFERS_LAST_MODIFIED);

        } else {

            addFileRow(result, getFileForDocId(documentId));

        }

        return result;

    }

    @Override

    public Cursor queryChildDocuments(

            String parentDocumentId, String[] projection, String sortOrder)

            throws FileNotFoundException {

        final MatrixCursor result = new MatrixCursor(resolveDocumentProjection(projection));

        if (DOC_ID_ROOT.equals(parentDocumentId)) {

            final File[] files = mRoot.listFiles();

            if (files != null) {

                for (File file : files) {

                    addFileRow(result, file);

                }

            }

        }

        return result;

    }

    @Override

    public ParcelFileDescriptor openDocument(

            String documentId, String mode, CancellationSignal signal)

            throws FileNotFoundException {

        if (ParcelFileDescriptor.parseMode(mode) != ParcelFileDescriptor.MODE_READ_ONLY) {

            throw new FileNotFoundException("Failed to open: " + documentId + ", mode = " + mode);

        }

        return ParcelFileDescriptor.open(getFileForDocId(documentId),

                ParcelFileDescriptor.MODE_READ_ONLY);

    }

    @Override

    public void deleteDocument(String documentId) throws FileNotFoundException {

        if (!getFileForDocId(documentId).delete()) {

            throw new FileNotFoundException("Failed to delete: " + documentId);

        }

    }

    private static String[] resolveRootProjection(String[] projection) {

        return projection != null ? projection : DEFAULT_ROOT_PROJECTION;

    }

    private static String[] resolveDocumentProjection(String[] projection) {

        return projection != null ? projection : DEFAULT_DOCUMENT_PROJECTION;

    }

    private static String getTypeForName(String name) {

        final int lastDot = name.lastIndexOf('.');

        if (lastDot >= 0) {

            final String extension = name.substring(lastDot + 1).toLowerCase();

            final String mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);

            if (mime != null) {

                return mime;

            }

        }

        return "application/octet-stream";

    }

    private String getDocIdForFile(File file) {

        return DOC_ID_ROOT + ":" + file.getName();

    }

    private File getFileForDocId(String documentId) throws FileNotFoundException {

        final int splitIndex = documentId.indexOf(':', 1);

        final String name = documentId.substring(splitIndex + 1);

        if (splitIndex == -1 || !DOC_ID_ROOT.equals(documentId.substring(0, splitIndex)) ||

                !FileUtils.isValidExtFilename(name)) {

            throw new FileNotFoundException("Invalid document ID: " + documentId);

        }

        final File file = new File(mRoot, name);

        if (!file.exists()) {

            throw new FileNotFoundException("File not found: " + documentId);

        }

        return file;

    }

    private void addFileRow(MatrixCursor result, File file) {

        final RowBuilder row = result.newRow();

        row.add(Document.COLUMN_DOCUMENT_ID, getDocIdForFile(file));

        row.add(Document.COLUMN_MIME_TYPE, getTypeForName(file.getName()));

        row.add(Document.COLUMN_DISPLAY_NAME, file.getName());

        row.add(Document.COLUMN_LAST_MODIFIED, file.lastModified());

        row.add(Document.COLUMN_FLAGS, Document.FLAG_SUPPORTS_DELETE);

        row.add(Document.COLUMN_SIZE, file.length());

    }

}