+
−/*
+
− * Hedgewars, a worms-like game
+
− * Copyright (c) 2005 Andrey Korotaev <unC0Rr@gmail.com>
+
− *
+
− * Distributed under the terms of the BSD-modified licence:
+
− *
+
− * Permission is hereby granted, free of charge, to any person obtaining a copy
+
− * of this software and associated documentation files (the "Software"), to deal
+
− * with the Software without restriction, including without limitation the
+
− * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+
− * sell copies of the Software, and to permit persons to whom the Software is
+
− * furnished to do so, subject to the following conditions:
+
− *
+
− * 1. Redistributions of source code must retain the above copyright notice,
+
− *    this list of conditions and the following disclaimer.
+
− * 2. Redistributions in binary form must reproduce the above copyright notice,
+
− *    this list of conditions and the following disclaimer in the documentation
+
− *    and/or other materials provided with the distribution.
+
− * 3. The name of the author may not be used to endorse or promote products
+
− *    derived from this software without specific prior written permission.
+
− *
+
− * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+
− * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+
− * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+
− * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+
− * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+
− * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+
− * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+
− * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+
− * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+
− * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
− */
+
−
+
−#include <QDateTime>
+
−#include "rndstr.h"
+
−
+
−const char * letters = "qwertyuiopasdfghjklzxcvbnm" \
+
−                       "QWERTYUIOPASDFGHJKLZXCVBNM" \
+
−                       "0123456789";
+
−const quint8 letterscnt = 62;
+
−
+
−const char * upd = "/hw!/";
+
−const quint8 updcnt = 5;
+
−
+
−RNDStr::RNDStr()
+
−{
+
−	SHA1Init(&ctx);
+
−	QDateTime now = QDateTime::currentDateTime();
+
−	QDateTime zero;
+
−	int secs = now.secsTo(zero);
+
−	SHA1Update(&ctx, (quint8 *)&secs, sizeof(int));
+
−}
+
−
+
−void RNDStr::GenRNDStr(QString & str, quint32 len)
+
−{
+
−	str = "";
+
−	sha1_ctxt tmpctx;
+
−	sha1_digest digest;
+
−	for(quint32 i = 0; i < len; i++)
+
−	{
+
−		SHA1Update(&ctx, (quint8 *)upd, updcnt);
+
−		qMemCopy(&tmpctx, &ctx, sizeof(sha1_ctxt));
+
−		SHA1Final(digest, &tmpctx);
+
−		int index = (digest[3] + digest[11] + digest[17]) % letterscnt;
+
−		str += letters[index];
+
−	}
+
−}