67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
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/* Quintuple Agent utilities
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* Copyright (C) 1999 Robert Bihlmeyer <robbe@orcus.priv.at>
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* Copyright (C) 2003 g10 Code GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 this program; if not, see <https://www.gnu.org/licenses/>.
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _UTIL_H
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#define _UTIL_H
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#include <sys/types.h>
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#ifndef HAVE_BYTE_TYPEDEF
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# undef byte
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# ifdef __riscos__
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/* Norcroft treats char == unsigned char but char* != unsigned char* */
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typedef char byte;
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# else
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typedef unsigned char byte;
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# endif
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# define HAVE_BYTE_TYPEDEF
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#endif
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#ifndef HAVE_ULONG_TYPEDEF
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# undef ulong
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typedef unsigned long ulong;
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# define HAVE_ULONG_TYPEDEF
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#endif
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ssize_t xwrite(int, const void *, size_t); /* write until finished */
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int debugmsg(const char *, ...); /* output a debug message if debugging==on */
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void drop_privs(void); /* finally drop privileges */
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/* To avoid that a compiler optimizes certain memset calls away, these
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macros may be used instead. */
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#define wipememory2(_ptr,_set,_len) do { \
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volatile char *_vptr=(volatile char *)(_ptr); \
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size_t _vlen=(_len); \
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while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \
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} while(0)
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#define wipememory(_ptr,_len) wipememory2(_ptr,0,_len)
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#define wipe(_ptr,_len) wipememory2(_ptr,0,_len)
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#define xtoi_1(p) (*(p) <= '9'? (*(p)- '0'): \
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*(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10))
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#define xtoi_2(p) ((xtoi_1(p) * 16) + xtoi_1((p)+1))
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#endif
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