/*
* Copyright (C)2009 - SSHJ Contributors
*
* 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.hierynomus.sshj.sftp;
import com.hierynomus.sshj.test.SshFixture;
import net.schmizz.sshj.SSHClient;
import net.schmizz.sshj.sftp.OpenMode;
import net.schmizz.sshj.sftp.RemoteFile;
import net.schmizz.sshj.sftp.SFTPEngine;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.EnumSet;
import java.util.Random;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.MatcherAssert.assertThat;
public class RemoteFileTest {
@Rule
public SshFixture fixture = new SshFixture();
@Rule
public TemporaryFolder temp = new TemporaryFolder();
@Test
public void shouldNotGoOutOfBoundsInReadAheadInputStream() throws IOException {
SSHClient ssh = fixture.setupConnectedDefaultClient();
ssh.authPassword("test", "test");
SFTPEngine sftp = new SFTPEngine(ssh).init();
RemoteFile rf;
File file = temp.newFile("SftpReadAheadTest.bin");
rf = sftp.open(file.getPath(), EnumSet.of(OpenMode.WRITE, OpenMode.CREAT));
byte[] data = new byte[8192];
new Random(53).nextBytes(data);
data[3072] = 1;
rf.write(0, data, 0, data.length);
rf.close();
assertThat("The file should exist", file.exists());
rf = sftp.open(file.getPath());
InputStream rs = rf.new ReadAheadRemoteFileInputStream(16 /*maxUnconfirmedReads*/);
byte[] test = new byte[4097];
int n = 0;
while (n < 2048) {
n += rs.read(test, n, 2048 - n);
}
while (n < 3072) {
n += rs.read(test, n, 3072 - n);
}
if (test[3072] != 0) {
System.err.println("buffer overrun!");
}
n += rs.read(test, n, test.length - n); // --> ArrayIndexOutOfBoundsException
byte[] test2 = new byte[data.length];
System.arraycopy(test, 0, test2, 0, test.length);
while (n < data.length) {
n += rs.read(test2, n, data.length - n);
}
assertThat("The written and received data should match", data, equalTo(test2));
}
}