blob: eb49802920e4cd9e631eb8d487c2082658aee116 [file] [log] [blame]
/*
* 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.messaging.datamodel;
import android.content.Context;
import android.net.Uri;
import android.text.TextUtils;
import com.android.messaging.Factory;
import com.android.messaging.util.LogUtil;
import com.google.common.annotations.VisibleForTesting;
import java.io.File;
import java.io.IOException;
/**
* A very simple content provider that can serve mms files from our cache directory.
*/
public class MmsFileProvider extends FileProvider {
private static final String TAG = LogUtil.BUGLE_TAG;
@VisibleForTesting
static final String AUTHORITY = "com.android.messaging.datamodel.MmsFileProvider";
private static final String RAW_MMS_DIR = "rawmms";
/**
* Returns a uri that can be used to access a raw mms file.
*
* @return the URI for an raw mms file
*/
public static Uri buildRawMmsUri() {
final Uri uri = FileProvider.buildFileUri(AUTHORITY, null);
final File file = getFile(uri.getPath());
if (!ensureFileExists(file)) {
LogUtil.e(TAG, "Failed to create temp file " + file.getAbsolutePath());
}
return uri;
}
@Override
File getFile(final String path, final String extension) {
return getFile(path);
}
public static File getFile(final Uri uri) {
return getFile(uri.getPath());
}
private static File getFile(final String path) {
final Context context = Factory.get().getApplicationContext();
final File filePath = new File(getDirectory(context), path + ".dat");
try {
if (!filePath.getCanonicalPath()
.startsWith(getDirectory(context).getCanonicalPath())) {
LogUtil.e(TAG, "getFile: path "
+ filePath.getCanonicalPath()
+ " does not start with "
+ getDirectory(context).getCanonicalPath());
return null;
}
} catch (IOException e) {
LogUtil.e(TAG, "getFile: getCanonicalPath failed ", e);
return null;
}
return filePath;
}
private static File getDirectory(final Context context) {
return new File(context.getCacheDir(), RAW_MMS_DIR);
}
}