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/*
* Copyright (C) 2014 Samsung System LSI
* 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.bluetooth.map;
import android.annotation.TargetApi;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;
import android.provider.Telephony.Mms;
import android.util.Log;
import com.google.android.mms.MmsException;
import com.google.android.mms.pdu.GenericPdu;
import com.google.android.mms.pdu.PduComposer;
import com.google.android.mms.pdu.PduPersister;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URI;
/**
* Provider to let the MMS subsystem read data from it own database from another process.
* Workaround for missing access to sendStoredMessage().
*/
@TargetApi(19)
public class MmsFileProvider extends ContentProvider {
static final String TAG = "BluetoothMmsFileProvider";
private PipeWriter mPipeWriter = new PipeWriter();
/*package*/
static final Uri CONTENT_URI = Uri.parse("content://com.android.bluetooth.map.MmsFileProvider");
@Override
public boolean onCreate() {
return true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
String sortOrder) {
// Don't support queries.
return null;
}
@Override
public Uri insert(Uri uri, ContentValues values) {
// Don't support inserts.
return null;
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
// Don't support deletes.
return 0;
}
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
// Don't support updates.
return 0;
}
@Override
public String getType(Uri uri) {
// For this sample, assume all files have no type.
return null;
}
@Override
public ParcelFileDescriptor openFile(Uri uri, String fileMode) throws FileNotFoundException {
String idStr = uri.getLastPathSegment();
if(idStr == null) {
throw new FileNotFoundException("Unable to extract message handle from: " + uri);
}
try {
long id = Long.parseLong(idStr);
} catch (NumberFormatException e) {
Log.w(TAG,e);
throw new FileNotFoundException("Unable to extract message handle from: " + uri);
}
Uri messageUri = Mms.CONTENT_URI.buildUpon().appendEncodedPath(idStr).build();
return openPipeHelper (messageUri, null, null, null, mPipeWriter);
}
public class PipeWriter implements PipeDataWriter<Cursor> {
/**
* Generate a message based on the cursor, and write the encoded data to the stream.
*/
public void writeDataToPipe(ParcelFileDescriptor output, Uri uri, String mimeType,
Bundle opts, Cursor c) {
if (BluetoothMapService.DEBUG) Log.d(TAG, "writeDataToPipe(): uri=" + uri.toString() +
" - getLastPathSegment() = " + uri.getLastPathSegment());
FileOutputStream fout = null;
GenericPdu pdu = null;
PduPersister pduPersister = null;
try {
fout = new FileOutputStream(output.getFileDescriptor());
pduPersister = PduPersister.getPduPersister(getContext());
pdu = pduPersister.load(uri);
byte[] bytes = (new PduComposer(getContext(), pdu)).make();
fout.write(bytes);
} catch (IOException e) {
Log.w(TAG, e);
/* TODO: How to signal the error to the calling entity? Had expected writeDataToPipe
* to throw IOException?
*/
} catch (MmsException e) {
Log.w(TAG, e);
/* TODO: How to signal the error to the calling entity? Had expected writeDataToPipe
* to throw IOException?
*/
} finally {
if(pduPersister != null) pduPersister.release();
try {
fout.flush();
} catch (IOException e) {
Log.w(TAG, "IOException: ", e);
}
try {
fout.close();
} catch (IOException e) {
Log.w(TAG, "IOException: ", e);
}
}
}
}
}
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