net.sourceforge.plantuml.version.PLSSignature Maven / Gradle / Ivy
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PlantUML is a component that allows to quickly write diagrams from text.
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
package net.sourceforge.plantuml.version;
import static java.nio.charset.StandardCharsets.UTF_8;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.net.NetworkInterface;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import java.util.Enumeration;
import java.util.Random;
import net.sourceforge.plantuml.FileUtils;
import net.sourceforge.plantuml.OptionPrint;
import net.sourceforge.plantuml.dedication.Dedication;
import net.sourceforge.plantuml.dedication.QBlock;
import net.sourceforge.plantuml.dedication.TurningBytes;
import net.sourceforge.plantuml.log.Logme;
import net.sourceforge.plantuml.utils.SignatureUtils;
public class PLSSignature {
// ::remove file when __CORE__
private final int type;
private final byte[] sha;
private final long now;
private final long exp;
private final String owner;
private final String context;
public PLSSignature(int type, byte[] sha, long now, long exp, String owner, String context) {
this.type = type;
this.sha = sha;
this.now = now;
this.exp = exp;
this.owner = owner;
this.context = context;
}
private LicenseInfo toLicenseInfo() {
return new LicenseInfo(LicenseType.fromInt(type), now, exp, owner, context, sha);
}
public static byte[] retrieveDistributorImageSignature() throws IOException, NoSuchAlgorithmException {
final InputStream dis = PSystemVersion.class.getResourceAsStream("/distributor.png");
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
FileUtils.copyToStream(dis, baos);
return SignatureUtils.getSHA512raw(baos.toByteArray());
}
public static PLSSignature fromRaw512(byte[] data) throws NoSuchAlgorithmException, IOException {
if (data.length != 512) {
throw new IllegalArgumentException();
}
final byte resultA[] = new byte[64];
final byte resultB[] = new byte[512 - 64];
System.arraycopy(data, 0, resultA, 0, resultA.length);
System.arraycopy(data, 64, resultB, 0, resultB.length);
final byte[] sig = SignatureUtils.getSHA512raw(resultB);
if (SignatureUtils.toHexString(resultA).equals(SignatureUtils.toHexString(sig)) == false) {
return null;
// throw new IOException();
}
final ByteArrayInputStream bais = new ByteArrayInputStream(resultB);
final int type = bais.read();
if (type == 0) {
final int version = bais.read();
final byte sha[] = readBytes(bais, 64);
final long now = readLong(bais);
final long exp = readLong(bais);
final String owner = readString(bais);
return new PLSSignature(type, sha, now, exp, owner, null);
}
if (type == 2) {
final int version = bais.read();
final byte sha[] = readBytes(bais, 64);
final long now = readLong(bais);
final long exp = readLong(bais);
final String owner = readString(bais);
final String context = readString(bais);
return new PLSSignature(type, sha, now, exp, owner, context);
}
return null;
}
// public static byte shrink(byte data[]) {
// byte result = 42;
// for (byte b : data) {
// result ^= b;
// }
// return result;
// }
private static byte[] readBytes(ByteArrayInputStream bais, int size) throws IOException {
byte[] result = new byte[size];
final int read = bais.read(result);
if (read != size) {
throw new IOException();
}
return result;
}
private static String readString(ByteArrayInputStream bais) throws IOException {
final int size = bais.read();
if (size > 80) {
throw new IOException();
}
byte[] result = new byte[size];
final int read = bais.read(result);
if (read != size) {
throw new IOException();
}
return new String(result, UTF_8);
}
private static long readLong(ByteArrayInputStream bais) throws IOException {
final byte[] result = new byte[8];
final int read = bais.read(result);
if (read != 8) {
throw new IOException();
}
long ll = 0;
for (int i = 7; i >= 0; i--) {
final long mask = ((long) (result[i] & 0xFF)) << (8 * (7 - i));
ll = ll | mask;
}
return ll;
}
public static LicenseInfo retrieveNamed(String sig, String key, boolean doCheck)
throws NoSuchAlgorithmException, InvalidKeySpecException, IOException {
byte[] block = decode(key);
xor(block, SignatureUtils.getSHA512raw(SignatureUtils.salting(sig, getSalt(sig))));
final PLSSignature sig2 = PLSSignature.fromRaw512(block);
if (sig2 == null) {
return LicenseInfo.NONE;
}
return sig2.toLicenseInfo();
}
public static LicenseInfo retrieveDistributor(String key) throws IOException, NoSuchAlgorithmException {
byte[] block = decode(key);
final PLSSignature sig2 = PLSSignature.fromRaw512(block);
if (sig2 == null) {
return LicenseInfo.NONE;
}
return sig2.toLicenseInfo();
}
private static byte[] decode(String key) throws IOException {
final BigInteger lu = new BigInteger(key, 36);
final QBlock qb2 = new QBlock(lu);
final QBlock qb3 = qb2.change(Dedication.E, Dedication.N);
byte block[] = qb3.getData512();
if (block.length != 512) {
throw new IOException();
}
return block;
}
private static void xor(byte buffer[], TurningBytes turningBytes) {
for (int i = 0; i < buffer.length; i++) {
buffer[i] ^= turningBytes.nextByte();
}
}
public static void xor(byte buffer[], byte[] key) {
xor(buffer, new TurningBytes(key));
}
public static byte[] getSalt(final String signature) throws UnsupportedEncodingException {
final Random rnd = new Random(getSeed(signature.getBytes(UTF_8)));
final byte salt[] = new byte[512];
rnd.nextBytes(salt);
return salt;
}
private static long getSeed(byte[] bytes) {
long result = 19;
for (byte b : bytes) {
result = result * 41 + b;
}
return result;
}
public static byte[] signature() throws IOException {
final String signature = OptionPrint.getHostName() + getMacAddress();
try {
return SignatureUtils.getSHA512raw(SignatureUtils.salting(signature, getSalt(signature)));
} catch (Exception e) {
Logme.error(e);
throw new IOException();
}
}
private static String getMacAddress() throws IOException {
final Enumeration net = NetworkInterface.getNetworkInterfaces();
final StringBuilder result = new StringBuilder();
while (net.hasMoreElements()) {
final NetworkInterface element = net.nextElement();
byte[] mac = element.getHardwareAddress();
if (mac != null) {
for (byte b : mac) {
result.append(String.format("%02x", b));
}
}
}
return result.toString();
}
}