/***** BEGIN LICENSE BLOCK *****

* Version: EPL 1.0/GPL 2.0/LGPL 2.1

*

* The contents of this file are subject to the Eclipse Public

* License Version 1.0 (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.eclipse.org/legal/epl-v10.html

*

* Software distributed under the License is distributed on an "AS

* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or

* implied. See the License for the specific language governing

* rights and limitations under the License.

*

* Copyright (C) 2006 Ola Bini <ola@ologix.com>

*

* Alternatively, the contents of this file may be used under the terms of

* either of the GNU General Public License Version 2 or later (the "GPL"),

* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),

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package org.jruby.ext.openssl;

import java.security.SecureRandom;

import org.jruby.Ruby;

import org.jruby.RubyClass;

import org.jruby.RubyModule;

import org.jruby.RubyNumeric;

import org.jruby.RubyString;

import org.jruby.anno.JRubyMethod;

import org.jruby.runtime.builtin.IRubyObject;

import org.jruby.util.ByteList;

/**

* @author <a href="mailto:ola.bini@ki.se">Ola Bini</a>

*/

public class Random {

private final static class RandomHolder {

public java.util.Random[] randomizers;

}

public static void createRandom(Ruby runtime, RubyModule ossl) {

RubyModule rand = ossl.defineModuleUnder("Random");

RubyClass osslError = (RubyClass)ossl.getConstant("OpenSSLError");

rand.defineClassUnder("RandomError",osslError,osslError.getAllocator());

rand.defineAnnotatedMethods(Random.class);

RandomHolder holder = new RandomHolder();

holder.randomizers = new java.util.Random[]{new java.util.Random(), new SecureRandom()};

rand.dataWrapStruct(holder);

}

@JRubyMethod(meta=true)

public static IRubyObject seed(IRubyObject recv, IRubyObject arg) {

return recv.getRuntime().getNil();

}

@JRubyMethod(meta=true)

public static IRubyObject load_random_file(IRubyObject recv, IRubyObject arg) {

return recv.getRuntime().getNil();

}

@JRubyMethod(meta=true)

public static IRubyObject write_random_file(IRubyObject recv, IRubyObject arg) {

return recv.getRuntime().getNil();

}

@JRubyMethod(meta=true)

public static IRubyObject random_bytes(IRubyObject recv, IRubyObject arg) {

return generate(recv, arg, 1);

}

@JRubyMethod(meta=true)

public static IRubyObject pseudo_bytes(IRubyObject recv, IRubyObject arg) {

return generate(recv, arg, 0);

}

private static RubyString generate(IRubyObject recv, IRubyObject arg, int ix) {

RandomHolder holder = (RandomHolder)recv.dataGetStruct();

int len = RubyNumeric.fix2int(arg);

if (len < 0 || len > Integer.MAX_VALUE) {

throw recv.getRuntime().newArgumentError("negative string size (or size too big)");

}

byte[] buf = new byte[len];

holder.randomizers[ix].nextBytes(buf);

return RubyString.newString(recv.getRuntime(), new ByteList(buf,false));

}

@JRubyMethod(meta=true)

public static IRubyObject egd(IRubyObject recv, IRubyObject arg) {

return recv.getRuntime().getNil();

}

@JRubyMethod(meta=true)

public static IRubyObject egd_bytes(IRubyObject recv, IRubyObject arg1, IRubyObject arg2) {

return recv.getRuntime().getNil();

}

}