942f733fd1
* Makefile.in (MAKEFILE_MODULES): Add crypto/md5. * admin/notes/copyright: Remove src/md5.c and src/md5.h as special cases. * src/Makefile.in (base_obj): Remove md5.o, since this file is in lib now. * src/deps.mk (md5.o): Remove. * aclocal.m4, configure, lib/Makefile.in, lib/gnulib.mk, m4/gl-comp.m4: Regenerate. * lib/md5.c: Regenerate. This renames the file from src/md5.c, and adds some porting improvements from gnulib. * lib/md5.h: Regenerate, likwise; rename from src/md5.h. * m4/md5.m4: New file, from gnulib. 2011-02-18 Paul Eggert <eggert@cs.ucla.edu>
161 lines
5.1 KiB
C
161 lines
5.1 KiB
C
/* Declaration of functions and data types used for MD5 sum computing
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library functions.
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Copyright (C) 1995-1997, 1999-2001, 2004-2006, 2008-2011 Free Software
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Foundation, Inc.
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This file is part of the GNU C Library.
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This program 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 3, or (at your option) any
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later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifndef _MD5_H
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#define _MD5_H 1
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#include <stdio.h>
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#define MD5_DIGEST_SIZE 16
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#define MD5_BLOCK_SIZE 64
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#ifndef __GNUC_PREREQ
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# if defined __GNUC__ && defined __GNUC_MINOR__
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# define __GNUC_PREREQ(maj, min) \
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((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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# else
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# define __GNUC_PREREQ(maj, min) 0
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# endif
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#endif
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#ifndef __THROW
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# if defined __cplusplus && __GNUC_PREREQ (2,8)
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# define __THROW throw ()
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# else
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# define __THROW
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# endif
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#endif
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#ifndef _LIBC
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# define __md5_buffer md5_buffer
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# define __md5_finish_ctx md5_finish_ctx
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# define __md5_init_ctx md5_init_ctx
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# define __md5_process_block md5_process_block
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# define __md5_process_bytes md5_process_bytes
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# define __md5_read_ctx md5_read_ctx
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# define __md5_stream md5_stream
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#endif
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# ifdef __cplusplus
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extern "C" {
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# endif
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/* The following contortions are an attempt to use the C preprocessor
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to determine an unsigned integral type that is 32 bits wide. An
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alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
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doing that would require that the configure script compile and *run*
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the resulting executable. Locally running cross-compiled executables
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is usually not possible. */
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#if defined _LIBC
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# include <stdint.h>
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typedef uint32_t md5_uint32;
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#else
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# if defined __STDC__ && __STDC__
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# define UINT_MAX_32_BITS 4294967295U
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# else
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# define UINT_MAX_32_BITS 0xFFFFFFFF
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# endif
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# include <limits.h>
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# if UINT_MAX == UINT_MAX_32_BITS
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typedef unsigned int md5_uint32;
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# else
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# if USHRT_MAX == UINT_MAX_32_BITS
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typedef unsigned short md5_uint32;
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# else
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# if ULONG_MAX == UINT_MAX_32_BITS
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typedef unsigned long md5_uint32;
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# else
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/* A machine this weird should have <stdint.h>. */
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# include <stdint.h>
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typedef uint32_t md5_uint32;
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# endif
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# endif
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# endif
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#endif
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/* Structure to save state of computation between the single steps. */
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struct md5_ctx
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{
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md5_uint32 A;
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md5_uint32 B;
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md5_uint32 C;
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md5_uint32 D;
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md5_uint32 total[2];
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md5_uint32 buflen;
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md5_uint32 buffer[32];
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};
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/*
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* The following three functions are build up the low level used in
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* the functions `md5_stream' and `md5_buffer'.
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*/
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/* Initialize structure containing state of computation.
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(RFC 1321, 3.3: Step 3) */
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extern void __md5_init_ctx (struct md5_ctx *ctx) __THROW;
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is necessary that LEN is a multiple of 64!!! */
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extern void __md5_process_block (const void *buffer, size_t len,
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struct md5_ctx *ctx) __THROW;
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is NOT required that LEN is a multiple of 64. */
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extern void __md5_process_bytes (const void *buffer, size_t len,
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struct md5_ctx *ctx) __THROW;
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/* Process the remaining bytes in the buffer and put result from CTX
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in first 16 bytes following RESBUF. The result is always in little
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endian byte order, so that a byte-wise output yields to the wanted
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ASCII representation of the message digest. */
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extern void *__md5_finish_ctx (struct md5_ctx *ctx, void *resbuf) __THROW;
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/* Put result from CTX in first 16 bytes following RESBUF. The result is
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always in little endian byte order, so that a byte-wise output yields
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to the wanted ASCII representation of the message digest. */
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extern void *__md5_read_ctx (const struct md5_ctx *ctx, void *resbuf) __THROW;
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/* Compute MD5 message digest for bytes read from STREAM. The
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resulting message digest number will be written into the 16 bytes
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beginning at RESBLOCK. */
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extern int __md5_stream (FILE *stream, void *resblock) __THROW;
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/* Compute MD5 message digest for LEN bytes beginning at BUFFER. The
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result is always in little endian byte order, so that a byte-wise
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output yields to the wanted ASCII representation of the message
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digest. */
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extern void *__md5_buffer (const char *buffer, size_t len,
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void *resblock) __THROW;
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# ifdef __cplusplus
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}
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# endif
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#endif /* md5.h */
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