/**
* License Agreement for OpenSearchServer
*
* Copyright (C) 2013 Emmanuel Keller / Jaeksoft
*
* http://www.open-search-server.com
*
* This file is part of OpenSearchServer.
*
* OpenSearchServer is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* OpenSearchServer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenSearchServer.
* If not, see <http://www.gnu.org/licenses/>.
**/
package com.jaeksoft.searchlib.util;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.StringReader;
import org.apache.commons.exec.ExecuteException;
public class PdfCrack {
private final static String FOUND_USER_PASSWORD = "found user-password: '";
public final static String findPassword(String pdfCrackCommandLine,
File file) throws ExecuteException, IOException {
ByteArrayOutputStream out = null;
ByteArrayOutputStream err = null;
BufferedReader br = null;
try {
out = new ByteArrayOutputStream();
err = new ByteArrayOutputStream();
ExecuteUtils.command(null, pdfCrackCommandLine, null, false, out,
err, 3600000L, "-f",
StringUtils.fastConcat("\"", file.getAbsolutePath(), "\""));
br = new BufferedReader(new StringReader(out.toString()));
String line;
int start = FOUND_USER_PASSWORD.length();
while ((line = br.readLine()) != null) {
if (line.startsWith(FOUND_USER_PASSWORD)) {
int end = line.length() - 1;
return end == start ? "" : line.substring(start, end);
}
}
return null;
} finally {
IOUtils.close(out, err, br);
}
}
}