From bb490ab247d03b72e5893bdb07808a78b1632c33 Mon Sep 17 00:00:00 2001
From: Edouard LEFIZELIER <edouardlefi@gmail.com>
Date: Mon, 17 Apr 2023 11:51:47 +0200
Subject: [PATCH] modification of md5_ext_openssl.c .h

---
 src/microhttpd/md5_ext_openssl.c | 29 +++++++++--------
 src/microhttpd/md5_ext_openssl.h | 54 +++++++++++++++++---------------
 2 files changed, 44 insertions(+), 39 deletions(-)

diff --git a/src/microhttpd/md5_ext_openssl.c b/src/microhttpd/md5_ext_openssl.c
index 53f68ccb..26962ca1 100644
--- a/src/microhttpd/md5_ext_openssl.c
+++ b/src/microhttpd/md5_ext_openssl.c
@@ -29,18 +29,21 @@
 #include "mhd_assert.h"
 
 void
-MHD_MD5 (struct Md5CtxExt_OpenSSL *c,
-         const unsigned char *d,
-         size_t n)
+MHD_MD5_init (struct Md5CtxExt *ctx)
 {
-  unsigned char *md;
-  if (NULL == MD5 (d, n, md))
-  {
-    c->ext_error = 1;
-  }
-  else
-  {
-    c->ext_error = 0;
-    memcpy (c->hash, md, sizeof(ctx->H));
-  }
+  MD5_init (*ctx);
+}
+
+
+void
+MHD_MD5_update (struct Md5CtxExt *ctx, const void *buf, int len)
+{
+  MD5_update (*ctx, *buf, len);
+}
+
+
+void
+MHD_MD5_final (struct Md5CtxExt *ctx, unsigned char *md)
+{
+  MD5_final (md, *ctx);
 }
diff --git a/src/microhttpd/md5_ext_openssl.h b/src/microhttpd/md5_ext_openssl.h
index db77196d..96092bb3 100644
--- a/src/microhttpd/md5_ext_openssl.h
+++ b/src/microhttpd/md5_ext_openssl.h
@@ -23,35 +23,37 @@
  * @author Édouard LEFIZELIER
  */
 
-#ifndef MHD_MD5_EXT_OPENSSL_H
-#define MHD_MD5_EXT_OPENSSL_H 1
-
-
-/*
-MD5 calcul return
-*/
-
-struct Md5CtxExt_OpenSSL
-{
-  unsigned char *hash; /** Data's hash calculated */
-  int ext_error; /** Non-zero if external error occurs during init or hashing */
-};
+#ifndef MHD_MD5_EXT_OPENSSL
+#define MHD_MD5_EXT_OPENSSL 1
 
+#include <openssl/crypto.h>
 
 /**
- * Indicates that MHD_MD5() function is present.
- */
-#define MHD_MD5 1
-
-
-/**
- * Calculate MD5 hash of the data.
+ * Initialise structure for MD5 calculation
  *
- * @param c the informations about the hash return
- * @param d the data to hash
- * @param n the length of the data
+ * @param ctx the calculation context
+*/
+void
+MHD_MD5_init (struct Md5CtxExt *ctx);
+
+/**
+ * Process portion of bytes.
+ *
+ * @param ctx the calculation context
+ * @param data bytes to add to hash
+ * @param length number of bytes in @a data
+*/
+void
+MHD_MD5_update (struct Md5CtxExt *ctx, const void *buf, int len);
+
+/**
+ * Finalise MD5 calculation, return digest.
+ *
+ * @param ctx the calculation context
+ * @param[out] digest set to the hash, must be #MD5_DIGEST_SIZE bytes
  */
 void
-MHD_MD5 (struct Md5CtxExt_OpenSSL *c,
-         const unsigned char *d,
-         size_t n)
\ No newline at end of file
+MHD_MD5_final (struct Md5CtxExt *ctx, unsigned char *md);
+
+
+#endif