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/**
* Copyright 2009 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.etherpad;
import net.appjet.oui.{Encryptomatic, config};
import net.appjet.common.util.BetterFile;
import java.io.{FileInputStream, FileOutputStream, ByteArrayInputStream, ByteArrayOutputStream, PrintWriter}
import java.security._;
import java.security.spec._;
object Licensing {
val publicKey = "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";
val pkhash = "f7a3dd5940a3f79904b81e4d32a08e2efaa0b2ab";
val keyVersion = 2.toByte;
def thanksForStealingFromPoorHackersTryingToEkeAMeagerLivingFromThisCruelWorld =
Encryptomatic.bytesToAscii(MessageDigest.getInstance("SHA1").digest(publicKey.getBytes())) == pkhash;
def sha1(b: Array[Byte]): String = Encryptomatic.bytesToAscii(MessageDigest.getInstance("SHA1").digest(b));
def sha1(s: String): String = sha1(s.getBytes("UTF-8"));
def toBytes(i: Int): Array[Byte] =
Array((i >> 24).toByte,
(i >> 16).toByte,
(i >> 8).toByte,
i.toByte);
def toByte(i: Int): Array[Byte] =
Array(i.toByte);
def toBytes(l: Long): Array[Byte] =
Array((l >> 56).toByte,
(l >> 48).toByte,
(l >> 40).toByte,
(l >> 32).toByte,
(l >> 24).toByte,
(l >> 16).toByte,
(l >> 8).toByte,
l.toByte);
def toInt(b0: Array[Byte]): Int = {
val b = b0.map(_.toInt & 0x00FF);
(b(0) << 24) | (b(1) << 16) | (b(2) << 8) | b(3);
}
def toInt(b: Byte): Int = b.toInt & 0x00FF;
def toLong(b0: Array[Byte]): Long = {
val b = b0.map(_.toLong & 0x000000FF);
(b(0) << 56) | (b(1) << 48) | (b(2) << 40) | (b(3) << 32) | (b(4) << 24) | (b(5) << 16) | (b(6) << 8) | b(7);
}
def generateKey(personName: String, organizationName: String, expiresDate: Long, editionId: Int, userQuota: Int, majorVersion: Int, minorVersion: Int, patchVersion: Int) = {
if (config.licenseGeneratorKey == null) {
throw new RuntimeException("No private key available to generate license key.");
}
def privateKey = Encryptomatic.readPrivateKey("DSA", new FileInputStream(config.licenseGeneratorKey));
def clean(s: String) = s.replaceAll(":", "-");
val keyPrefix =
List(personName, organizationName, expiresDate.toString, editionId.toString, userQuota.toString, majorVersion.toString, minorVersion.toString, patchVersion.toString).map(clean).mkString(":");
val sig = Encryptomatic.sign(new ByteArrayInputStream(keyPrefix.getBytes("UTF-8")), privateKey)
List(personName, organizationName).mkString(":") + ":" +
Encryptomatic.bytesToAscii(
Array.concat[Byte](Array(keyVersion), // don't want BigInt dropping bytes, that'd be sad. :(
toBytes(expiresDate),
toBytes(editionId),
toBytes(userQuota),
toByte(majorVersion),
toByte(minorVersion),
toByte(patchVersion),
sig));
}
def decodeKey(key: String) = try {
val Array(personName0, organizationName0, sigAndInfo) = key.split(":");
val sigAndInfoBytes = Encryptomatic.asciiToBytes(sigAndInfo);
val thisKeyVersion = toInt(sigAndInfoBytes(0));
val expiresDate0 = toLong(sigAndInfoBytes.slice(1, 9));
val editionId0 = toInt(sigAndInfoBytes.slice(9, 13));
val userQuota0 = toInt(sigAndInfoBytes.slice(13, 17));
val (majorVersion0, minorVersion0, patchVersion0) =
if (thisKeyVersion >= 2) {
(toInt(sigAndInfoBytes(17)), toInt(sigAndInfoBytes(18)), toInt(sigAndInfoBytes(19)));
} else {
(0, 0, 0);
}
val sig = sigAndInfoBytes.drop(if (thisKeyVersion >= 2) 20 else 17);
val keyPrefix = {
var a = Seq(personName0, organizationName0, expiresDate0.toString, editionId0.toString, userQuota0.toString);
if (thisKeyVersion >= 2) {
a = a ++ Seq(majorVersion0.toString, minorVersion0.toString, patchVersion0.toString);
}
a.mkString(":");
}
if (! Encryptomatic.verify(new ByteArrayInputStream(keyPrefix.getBytes("UTF-8")),
Encryptomatic.readPublicKey("DSA",
new ByteArrayInputStream(publicKey.getBytes())), sig)) {
null;
} else {
new {
def personName = personName0;
def organizationName = organizationName0;
def expiresDate = expiresDate0;
def editionId = editionId0;
def userQuota = userQuota0;
def majorVersion = majorVersion0;
def minorVersion = minorVersion0;
def patchVersion = patchVersion0;
}
}
} catch {
case e => null;
}
def main(args: Array[String]) {
args(0) match {
case "genkeypair" => {
println("Generating keypair...");
Encryptomatic.writeKeyPair(Encryptomatic.generateKeyPair("DSA"), args(1), args(2));
println("Done.");
}
case "genmainkey" => {
println("Generating key for etherpad.com...");
config.values("licenseGeneratorKey") = args(1);
val out = new PrintWriter(new FileOutputStream(args(2)));
out.print(generateKey("etherpad", "AppJet", -1, 0, -1, 0, 0, 0))
out.close();
println("Done.");
}
case "test" => {
println("Testing key generation.");
config.values("licenseGeneratorKey") = args(1);
val key = generateKey("Foo Bar", "Baz, Inc.", System.currentTimeMillis() + 86400*1000, 0, 100, 1, 2, 3);
println("Key is: "+key);
val obj = decodeKey(key);
println(List(obj.personName, obj.organizationName, obj.expiresDate, obj.editionId, obj.userQuota, obj.majorVersion, obj.minorVersion, obj.patchVersion).mkString(", "));
}
case "parsekey" => {
println("Testing key decode.");
val obj = decodeKey(args(1));
println("Key: "+List(obj.personName, obj.organizationName, obj.expiresDate, obj.editionId, obj.userQuota, obj.majorVersion, obj.minorVersion, obj.patchVersion).mkString(", "));
}
case "testascii" => {
val one = 17;
val two = -1L;
val three = (Math.random*Math.pow(10, (Math.random*10).toInt)).toInt;
println(List(one, two, three).mkString(", "));
println(List(toInt(toBytes(one)), toLong(toBytes(two)), toInt(toBytes(three))).mkString(", "));
val bytes = Encryptomatic.asciiToBytes(Encryptomatic.bytesToAscii(Array.concat[Byte](Array(1.toByte), toBytes(one), toBytes(two), toBytes(three))));
println("I can has bytes: "+bytes.length);
println(List(toInt(bytes.slice(1, 5)), toLong(bytes.slice(5, 13)), toInt(bytes.slice(13, 17))).mkString(", "));
}
}
}
}
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