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/*
* Copyright (C) 2017 Google Inc.
*
* 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.google.android.mobly.snippet.bundled;
import android.content.Context;
import android.net.Uri;
import android.os.ParcelFileDescriptor;
import android.support.test.InstrumentationRegistry;
import com.google.android.mobly.snippet.Snippet;
import com.google.android.mobly.snippet.bundled.utils.Utils;
import com.google.android.mobly.snippet.rpc.Rpc;
import java.io.IOException;
import java.security.DigestInputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/** Snippet class for File and abstract storage URI operation RPCs. */
public class FileSnippet implements Snippet {
private final Context mContext;
public FileSnippet() {
mContext = InstrumentationRegistry.getContext();
}
private static class FileSnippetException extends Exception {
private static final long serialVersionUID = 8081L;
public FileSnippetException(String msg) {
super(msg);
}
}
@Rpc(description = "Compute MD5 hash on a content URI. Return the MD5 has has a hex string.")
public String fileMd5Hash(String uri) throws IOException, NoSuchAlgorithmException {
Uri uri_ = Uri.parse(uri);
ParcelFileDescriptor pfd = mContext.getContentResolver().openFileDescriptor(uri_, "r");
MessageDigest md = MessageDigest.getInstance("MD5");
int length = (int) pfd.getStatSize();
byte[] buf = new byte[length];
ParcelFileDescriptor.AutoCloseInputStream stream =
new ParcelFileDescriptor.AutoCloseInputStream(pfd);
DigestInputStream dis = new DigestInputStream(stream, md);
try {
dis.read(buf, 0, length);
return Utils.bytesToHexString(md.digest());
} finally {
dis.close();
stream.close();
}
}
@Rpc(description = "Remove a file pointed to by the content URI.")
public void fileDeleteContent(String uri) {
Uri uri_ = Uri.parse(uri);
mContext.getContentResolver().delete(uri_, null, null);
}
@Override
public void shutdown() {}
}
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