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Renamed MD5 functions and struct to avoid conflict with openssl.

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Issue #260
This commit is contained in:
John McNamara 2020-01-07 23:45:34 +00:00
parent 85dfccd734
commit 18252b714e
4 changed files with 36 additions and 40 deletions
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22
include/xlsxwriter/third_party/md5.h vendored
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@ -23,23 +23,21 @@
* See md5.c for more information.
*/
#ifdef HAVE_OPENSSL
#include <openssl/md5.h>
#elif !defined(_MD5_H)
#define _MD5_H
#ifndef __LXW_MD5_H__
#define __LXW_MD5_H__
/* Any 32-bit or wider unsigned integer data type will do */
typedef unsigned int MD5_u32plus;
typedef unsigned int uint32_t;
typedef struct {
MD5_u32plus lo, hi;
MD5_u32plus a, b, c, d;
uint32_t lo, hi;
uint32_t a, b, c, d;
unsigned char buffer[64];
MD5_u32plus block[16];
} MD5_CTX;
uint32_t block[16];
} lxw_md5_ctx;
extern void MD5_Init(MD5_CTX *ctx);
extern void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size);
extern void MD5_Final(unsigned char *result, MD5_CTX *ctx);
extern void lxw_md5_init(lxw_md5_ctx *ctx);
extern void lxw_md5_update(lxw_md5_ctx *ctx, const void *data, unsigned long size);
extern void lxw_md5_final(unsigned char *result, lxw_md5_ctx *ctx);
#endif

8
src/worksheet.c
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@ -2949,7 +2949,7 @@ _get_image_properties(lxw_object_properties *image_props)
unsigned char signature[4];
#ifndef USE_NO_MD5
uint8_t i;
MD5_CTX md5_context;
lxw_md5_ctx md5_context;
size_t size_read;
char buffer[LXW_IMAGE_BUFFER_SIZE];
unsigned char md5_checksum[LXW_MD5_SIZE];
@ -2987,16 +2987,16 @@ _get_image_properties(lxw_object_properties *image_props)
* images to reduce the xlsx file size.*/
rewind(image_props->stream);
MD5_Init(&md5_context);
lxw_md5_init(&md5_context);
size_read = fread(buffer, 1, LXW_IMAGE_BUFFER_SIZE, image_props->stream);
while (size_read) {
MD5_Update(&md5_context, buffer, size_read);
lxw_md5_update(&md5_context, buffer, size_read);
size_read =
fread(buffer, 1, LXW_IMAGE_BUFFER_SIZE, image_props->stream);
}
MD5_Final(md5_checksum, &md5_context);
lxw_md5_final(md5_checksum, &md5_context);
/* Create a 32 char hex string buffer for the MD5 checksum. */
image_props->md5 = calloc(1, LXW_MD5_SIZE * 2 + 1);

24
third_party/md5/md5.c vendored
View File

@ -79,16 +79,16 @@
*/
#if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
#define SET(n) \
(*(MD5_u32plus *)&ptr[(n) * 4])
(*(uint32_t *)&ptr[(n) * 4])
#define GET(n) \
SET(n)
#else
#define SET(n) \
(ctx->block[(n)] = \
(MD5_u32plus)ptr[(n) * 4] | \
((MD5_u32plus)ptr[(n) * 4 + 1] << 8) | \
((MD5_u32plus)ptr[(n) * 4 + 2] << 16) | \
((MD5_u32plus)ptr[(n) * 4 + 3] << 24))
(uint32_t)ptr[(n) * 4] | \
((uint32_t)ptr[(n) * 4 + 1] << 8) | \
((uint32_t)ptr[(n) * 4 + 2] << 16) | \
((uint32_t)ptr[(n) * 4 + 3] << 24))
#define GET(n) \
(ctx->block[(n)])
#endif
@ -97,11 +97,11 @@
* This processes one or more 64-byte data blocks, but does NOT update the bit
* counters. There are no alignment requirements.
*/
static const void *body(MD5_CTX *ctx, const void *data, unsigned long size)
static const void *body(lxw_md5_ctx *ctx, const void *data, unsigned long size)
{
const unsigned char *ptr;
MD5_u32plus a, b, c, d;
MD5_u32plus saved_a, saved_b, saved_c, saved_d;
uint32_t a, b, c, d;
uint32_t saved_a, saved_b, saved_c, saved_d;
ptr = (const unsigned char *)data;
@ -204,7 +204,7 @@ static const void *body(MD5_CTX *ctx, const void *data, unsigned long size)
return ptr;
}
void MD5_Init(MD5_CTX *ctx)
void lxw_md5_init(lxw_md5_ctx *ctx)
{
ctx->a = 0x67452301;
ctx->b = 0xefcdab89;
@ -215,9 +215,9 @@ void MD5_Init(MD5_CTX *ctx)
ctx->hi = 0;
}
void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size)
void lxw_md5_update(lxw_md5_ctx *ctx, const void *data, unsigned long size)
{
MD5_u32plus saved_lo;
uint32_t saved_lo;
unsigned long used, available;
saved_lo = ctx->lo;
@ -255,7 +255,7 @@ void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size)
(dst)[2] = (unsigned char)((src) >> 16); \
(dst)[3] = (unsigned char)((src) >> 24);
void MD5_Final(unsigned char *result, MD5_CTX *ctx)
void lxw_md5_final(unsigned char *result, lxw_md5_ctx *ctx)
{
unsigned long used, available;

22
third_party/md5/md5.h vendored
View File

@ -23,23 +23,21 @@
* See md5.c for more information.
*/
#ifdef HAVE_OPENSSL
#include <openssl/md5.h>
#elif !defined(_MD5_H)
#define _MD5_H
#ifndef __LXW_MD5_H__
#define __LXW_MD5_H__
/* Any 32-bit or wider unsigned integer data type will do */
typedef unsigned int MD5_u32plus;
typedef unsigned int uint32_t;
typedef struct {
MD5_u32plus lo, hi;
MD5_u32plus a, b, c, d;
uint32_t lo, hi;
uint32_t a, b, c, d;
unsigned char buffer[64];
MD5_u32plus block[16];
} MD5_CTX;
uint32_t block[16];
} lxw_md5_ctx;
extern void MD5_Init(MD5_CTX *ctx);
extern void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size);
extern void MD5_Final(unsigned char *result, MD5_CTX *ctx);
extern void lxw_md5_init(lxw_md5_ctx *ctx);
extern void lxw_md5_update(lxw_md5_ctx *ctx, const void *data, unsigned long size);
extern void lxw_md5_final(unsigned char *result, lxw_md5_ctx *ctx);
#endif