/*
* Copyright 2019 DeNA Co., Ltd.
*
* 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 packetproxy.common;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
import javax.tools.JavaCompiler;
import javax.tools.ToolProvider;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.ArrayUtils;
import packetproxy.util.PacketProxyUtility;
public class Utils {
public static int indexOf(byte[] input_data, int start_idx, int end_idx, byte[] word)
{
assert(end_idx <= input_data.length);
for (int i = start_idx + word.length - 1; i < end_idx; i++)
{
int start_input_idx = i - word.length + 1;
int word_idx;
for (word_idx = 0; word_idx < word.length && start_input_idx + word_idx < input_data.length; word_idx++) {
if (word[word_idx] != input_data[start_input_idx + word_idx]) { break; }
}
if (word_idx == word.length) {
return start_input_idx;
}
}
return -1;
}
/**
* OSの名前を返す
*/
public enum Platform { WINDOWS, MAC, LINUX };
public static Platform checkOS() {
String osname = System.getProperty("os.name");
if (osname.indexOf("Windows") >= 0) {
return Platform.WINDOWS;
} else if (osname.indexOf("Mac") >= 0) {
return Platform.MAC;
} else {
return Platform.LINUX;
}
}
/**
* OS判定用
*/
public static boolean isWindows() {
return checkOS() == Platform.WINDOWS;
}
public static boolean isMac() {
return checkOS() == Platform.MAC;
}
/**
* ExcecuteExe関数で利用される。Macの場合monoを追加する
*/
private static String[] addMonoPath(String... args) {
List<String> cmd_array = new ArrayList<String>();
Utils.Platform os = Utils.checkOS();
if (os == Utils.Platform.MAC || os == Utils.Platform.LINUX) {
cmd_array.add("mono");
}
for (String s: args) {
cmd_array.add(s);
}
return cmd_array.toArray(new String[0]);
}
private static String[] toCmdArray(String... args) {
List<String> cmd_array = new ArrayList<String>();
for (String s: args) {
cmd_array.add(s);
}
return cmd_array.toArray(new String[0]);
}
public static byte[] executeCmd(String... command) throws Exception {
Process p = Runtime.getRuntime().exec(toCmdArray(command));
InputStream in = p.getInputStream();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
byte [] buffer = new byte[4096];
int len = 0;
while ((len = in.read(buffer, 0, 4096)) > 0) {
bout.write(buffer, 0, len);
}
InputStream err = p.getErrorStream();
ByteArrayOutputStream berr = new ByteArrayOutputStream();
while ((len = err.read(buffer, 0, 4096)) > 0) {
berr.write(buffer, 0, len);
}
if (berr.size() > 0) {
PacketProxyUtility.getInstance().packetProxyLogErr(berr.toString());
}
return bout.toByteArray();
}
/**
* EXEを実行する。MACの場合はmonoで実行する
* @return 標準出力に表示されたデータ
*/
public static byte[] executeExe(String... command) throws Exception
{
Process p = Runtime.getRuntime().exec(addMonoPath(command));
InputStream in = p.getInputStream();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
byte [] buffer = new byte[4096];
int len = 0;
while ((len = in.read(buffer, 0, 4096)) > 0) {
bout.write(buffer, 0, len);
}
InputStream err = p.getErrorStream();
ByteArrayOutputStream berr = new ByteArrayOutputStream();
while ((len = err.read(buffer, 0, 4096)) > 0) {
berr.write(buffer, 0, len);
}
if (berr.size() > 0) {
PacketProxyUtility.getInstance().packetProxyLogErr(berr.toString());
}
return bout.toByteArray();
}
private static String[] addRubyPath(String... args) {
List<String> cmd_array = new ArrayList<String>();
Utils.Platform os = Utils.checkOS();
if (os == Utils.Platform.MAC || os == Utils.Platform.LINUX) {
cmd_array.add("ruby");
}
for (String s: args) {
cmd_array.add(s);
// System.out.print(s+ " ");
}
//System.out.println("");
return cmd_array.toArray(new String[0]);
}
/**
* EXEを実行する。MACの場合はmonoで実行する
* @return 標準出力に表示されたデータ
*/
public static byte[] executeRuby(String... command) throws Exception
{
Process p = Runtime.getRuntime().exec(addRubyPath(command));
InputStream in = p.getInputStream();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
byte [] buffer = new byte[4096];
int len = 0;
while ((len = in.read(buffer, 0, 4096)) > 0) {
bout.write(buffer, 0, len);
}
return Base64.decodeBase64(bout.toByteArray());
}
public static byte[] readfile(String filename) throws Exception
{
FileInputStream fis = new FileInputStream(filename);
BufferedInputStream bis = new BufferedInputStream(fis);
ByteArrayOutputStream bout = new ByteArrayOutputStream();
byte [] buffer = new byte[4096];
int len = 0;
while ((len = bis.read(buffer, 0, 4096)) > 0) {
bout.write(buffer, 0, len);
}
fis.close();
return bout.toByteArray();
}
public static void deletefile(String filename) throws Exception
{
File file = new File(filename);
if (file.exists()) {
file.delete();
}
}
public static void writefile(String filename, byte[] data) throws Exception
{
FileOutputStream fos = new FileOutputStream(filename);
BufferedOutputStream bos = new BufferedOutputStream(fos);
bos.write(data);
bos.flush();
bos.close();
}
public static byte[] gzip(byte[] src) throws Exception {
ByteArrayOutputStream out = new ByteArrayOutputStream();
GZIPOutputStream gzos = new GZIPOutputStream(out);
gzos.write(src);
gzos.flush();
gzos.finish();
return out.toByteArray();
}
public static byte[] ungzip(byte[] src) throws Exception{
ByteArrayOutputStream out = new ByteArrayOutputStream();
GZIPInputStream gzis = new GZIPInputStream(new ByteArrayInputStream(src));
byte[] buf = new byte[1024];
while(true) {
int len = gzis.read(buf);
if( len < 0) break;
out.write(buf, 0, len);
}
return out.toByteArray();
}
public static byte[] replaceArray(byte[] src, int start_idx, int end_idx, byte[] replacer) {
byte[] head = ArrayUtils.subarray(src, 0, start_idx);
byte[] tail = ArrayUtils.subarray(src, end_idx, src.length);
return ArrayUtils.addAll(head, ArrayUtils.addAll(replacer, tail));
}
public static byte[] getSelectedCharacters(byte[] src, int start_idx, int end_idx){
return ArrayUtils.subarray(src, start_idx, end_idx);
}
public static boolean isPrintable(byte[] data){
for(byte b : data){
if(b < 32)return false;
if(b > 126)return false;
}
return true;
}
public static boolean supportedJava() {
if (executedByJDK() == true) {
return true;
}
return false;
}
public static boolean executedByJDK() {
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
if (compiler != null) {
return true;
}
return false;
}
public static boolean javaVersionIs1_8() {
String version = System.getProperty("java.version");
if (version.matches("1\\.8\\..*")) {
return true;
}
return false;
}
}
