158 lines
4.1 KiB
C
158 lines
4.1 KiB
C
/*****************************************************************************
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*
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* File ..................: mbuseradd/rad64c.c
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* Purpose ...............: MBSE BBS Shadow Password Suite
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* Last modification date : 25-Sep-2000
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* Original Source .......: Shadow Password Suite
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* Original Copyrioght ...: Julianne Frances Haugh and others.
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*
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*****************************************************************************
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* Copyright (C) 1997-2000
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*****************************************************************************/
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/*
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* Copyright 1989 - 1992, Julianne Frances Haugh
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "../config.h"
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#include "rad64.h"
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#ifndef HAVE_C64I
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/*
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* c64i - convert a radix 64 character to an integer
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*/
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int c64i(char c)
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{
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if (c == '.')
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return (0);
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if (c == '/')
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return (1);
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if (c >= '0' && c <= '9')
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return (c - '0' + 2);
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if (c >= 'A' && c <= 'Z')
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return (c - 'A' + 12);
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if (c >= 'a' && c <= 'z')
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return (c - 'a' + 38);
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else
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return (-1);
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}
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/*
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* i64c - convert an integer to a radix 64 character
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*/
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int i64c(int i)
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{
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if (i <= 0)
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return ('.');
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if (i == 1)
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return ('/');
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if (i >= 2 && i < 12)
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return ('0' - 2 + i);
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if (i >= 12 && i < 38)
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return ('A' - 12 + i);
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if (i >= 38 && i < 63)
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return ('a' - 38 + i);
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return ('z');
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}
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#endif
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#ifndef HAVE_A64L
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/*
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* l64a - convert a long to a string of radix 64 characters
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*/
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char *l64a(long l)
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{
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static char buf[8];
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int i = 0;
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if (l < 0L)
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return ((char *) 0);
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do {
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buf[i++] = i64c ((int) (l % 64));
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buf[i] = '\0';
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} while (l /= 64L, l > 0 && i < 6);
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return (buf);
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}
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/*
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* a64l - convert a radix 64 string to a long integer
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*/
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long a64l(const char *s)
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{
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int i;
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long value;
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long shift = 0;
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for (i = 0, value = 0L;i < 6 && *s;s++) {
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value += (c64i (*s) << shift);
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shift += 6;
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}
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return (value);
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}
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#endif /* !HAVE_A64L */
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