opkg: update md5.{c,h} with latest version from gnulib

git-svn-id: http://opkg.googlecode.com/svn/trunk@53 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358

1 files changed, 106 insertions, 23 deletions

diff --git a/libopkg/md5.h b/libopkg/md5.h
index 7af7e93..3ae657b 100644
--- a/libopkg/md5.h
+++ b/libopkg/md5.h
@@ -1,35 +1,118 @@
-/* md5.h - Compute MD5 checksum of files or strings according to the
- *         definition of MD5 in RFC 1321 from April 1992.
- * Copyright (C) 1995-1999 Free Software Foundation, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+/* Declaration of functions and data types used for MD5 sum computing
+   library functions.
+   Copyright (C) 1995-1997,1999,2000,2001,2004,2005,2006,2008
+      Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef _MD5_H
+#define _MD5_H 1
+
+#include <stdio.h>
+#include <stdint.h>
+
+#define MD5_DIGEST_SIZE 16
+#define MD5_BLOCK_SIZE 64
+
+#ifndef __GNUC_PREREQ
+# if defined __GNUC__ && defined __GNUC_MINOR__
+#  define __GNUC_PREREQ(maj, min)					\
+  ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+# else
+#  define __GNUC_PREREQ(maj, min) 0
+# endif
+#endif
+
+#ifndef __THROW
+# if defined __cplusplus && __GNUC_PREREQ (2,8)
+#  define __THROW	throw ()
+# else
+#  define __THROW
+# endif
+#endif
+
+#ifndef _LIBC
+# define __md5_buffer md5_buffer
+# define __md5_finish_ctx md5_finish_ctx
+# define __md5_init_ctx md5_init_ctx
+# define __md5_process_block md5_process_block
+# define __md5_process_bytes md5_process_bytes
+# define __md5_read_ctx md5_read_ctx
+# define __md5_stream md5_stream
+#endif
+
+/* Structure to save state of computation between the single steps.  */
+struct md5_ctx
+{
+  uint32_t A;
+  uint32_t B;
+  uint32_t C;
+  uint32_t D;
+
+  uint32_t total[2];
+  uint32_t buflen;
+  uint32_t buffer[32];
+};
+
+/*
+ * The following three functions are build up the low level used in
+ * the functions `md5_stream' and `md5_buffer'.
  */
 
-#ifndef MD5_H
-#define MD5_H
+/* Initialize structure containing state of computation.
+   (RFC 1321, 3.3: Step 3)  */
+extern void __md5_init_ctx (struct md5_ctx *ctx) __THROW;
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is necessary that LEN is a multiple of 64!!! */
+extern void __md5_process_block (const void *buffer, size_t len,
+				 struct md5_ctx *ctx) __THROW;
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is NOT required that LEN is a multiple of 64.  */
+extern void __md5_process_bytes (const void *buffer, size_t len,
+				 struct md5_ctx *ctx) __THROW;
+
+/* Process the remaining bytes in the buffer and put result from CTX
+   in first 16 bytes following RESBUF.  The result is always in little
+   endian byte order, so that a byte-wise output yields to the wanted
+   ASCII representation of the message digest.  */
+extern void *__md5_finish_ctx (struct md5_ctx *ctx, void *resbuf) __THROW;
+
+
+/* Put result from CTX in first 16 bytes following RESBUF.  The result is
+   always in little endian byte order, so that a byte-wise output yields
+   to the wanted ASCII representation of the message digest.  */
+extern void *__md5_read_ctx (const struct md5_ctx *ctx, void *resbuf) __THROW;
+
 
 /* Compute MD5 message digest for bytes read from STREAM.  The
    resulting message digest number will be written into the 16 bytes
    beginning at RESBLOCK.  */
-int md5_stream(FILE *stream, void *resblock);
+extern int __md5_stream (FILE *stream, void *resblock) __THROW;
 
 /* Compute MD5 message digest for LEN bytes beginning at BUFFER.  The
    result is always in little endian byte order, so that a byte-wise
    output yields to the wanted ASCII representation of the message
    digest.  */
-void *md5_buffer(const char *buffer, size_t len, void *resblock);
-
-#endif
+extern void *__md5_buffer (const char *buffer, size_t len,
+			   void *resblock) __THROW;
 
+#endif /* md5.h */