Re-apply portability changes to current sha2.{c,h}.

Rather than attempt to apply 14 years' worth of changes to OpenBSD's sha2
I imported the current versions directly then re-applied the portability
changes.  This also allowed re-syncing digest-libc.c against upstream.

2 files changed, 57 insertions, 4 deletions

diff --git a/openbsd-compat/sha2.c b/openbsd-compat/sha2.c
index f16cf9cd0..eca0644c6 100644
--- a/openbsd-compat/sha2.c
+++ b/openbsd-compat/sha2.c
@@ -34,7 +34,14 @@
  * $From: sha2.c,v 1.1 2001/11/08 00:01:51 adg Exp adg $
  */
 
-#include <sys/types.h>
+/* OPENBSD ORIGINAL: lib/libc/hash/sha2.c */
+
+#include "includes.h"
+
+#if !defined(HAVE_SHA256UPDATE) || !defined(HAVE_SHA384UPDATE) || \
+    !defined(HAVE_SHA512UPDATE)
+
+#define MAKE_CLONE(x, y)        /* no-op out */
 
 #include <string.h>
 #include <sha2.h>
@@ -264,6 +271,7 @@ static const u_int64_t sha512_initial_hash_value[8] = {
 };
 
 #if !defined(SHA2_SMALL)
+#if 0
 /* Initial hash value H for SHA-224: */
 static const u_int32_t sha224_initial_hash_value[8] = {
         0xc1059ed8UL,
@@ -275,6 +283,7 @@ static const u_int32_t sha224_initial_hash_value[8] = {
         0x64f98fa7UL,
         0xbefa4fa4UL
 };
+#endif /* 0 */
 
 /* Initial hash value H for SHA-384 */
 static const u_int64_t sha384_initial_hash_value[8] = {
@@ -288,6 +297,7 @@ static const u_int64_t sha384_initial_hash_value[8] = {
         0x47b5481dbefa4fa4ULL
 };
 
+#if 0
 /* Initial hash value H for SHA-512-256 */
 static const u_int64_t sha512_256_initial_hash_value[8] = {
         0x22312194fc2bf72cULL,
@@ -336,6 +346,7 @@ SHA224Final(u_int8_t digest[SHA224_DIGEST_LENGTH], SHA2_CTX *context)
 }
 DEF_WEAK(SHA224Final);
 #endif /* !defined(SHA2_SMALL) */
+#endif /* 0 */
 
 /*** SHA-256: *********************************************************/
 void
@@ -917,6 +928,25 @@ DEF_WEAK(SHA384Transform);
 DEF_WEAK(SHA384Update);
 DEF_WEAK(SHA384Pad);
 
+/* Equivalent of MAKE_CLONE (which is a no-op) for SHA384 funcs */
+void
+SHA384Transform(u_int64_t state[8], const u_int8_t data[SHA512_BLOCK_LENGTH])
+{
+        return SHA512Transform(state, data);
+}
+
+void
+SHA384Update(SHA2_CTX *context, const u_int8_t *data, size_t len)
+{
+        SHA512Update(context, data, len);
+}
+
+void
+SHA384Pad(SHA2_CTX *context)
+{
+        SHA512Pad(context);
+}
+
 void
 SHA384Final(u_int8_t digest[SHA384_DIGEST_LENGTH], SHA2_CTX *context)
 {
@@ -936,6 +966,7 @@ SHA384Final(u_int8_t digest[SHA384_DIGEST_LENGTH], SHA2_CTX *context)
 }
 DEF_WEAK(SHA384Final);
 
+#if 0
 /*** SHA-512/256: *********************************************************/
 void
 SHA512_256Init(SHA2_CTX *context)
@@ -973,3 +1004,6 @@ SHA512_256Final(u_int8_t digest[SHA512_256_DIGEST_LENGTH], SHA2_CTX *context)
 }
 DEF_WEAK(SHA512_256Final);
 #endif /* !defined(SHA2_SMALL) */
+#endif /* 0 */
+
+#endif /* HAVE_SHA{256,384,512}UPDATE */
diff --git a/openbsd-compat/sha2.h b/openbsd-compat/sha2.h
index 52ddb3f79..bf7dafc52 100644
--- a/openbsd-compat/sha2.h
+++ b/openbsd-compat/sha2.h
@@ -34,9 +34,16 @@
  * $From: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
  */
 
-#ifndef _SHA2_H
-#define _SHA2_H
+/* OPENBSD ORIGINAL: include/sha2.h */
 
+#ifndef _SSHSHA2_H
+#define _SSHSHA2_H
+
+#include "includes.h"
+#include <sys/cdefs.h>
+
+#if !defined(HAVE_SHA256UPDATE) || !defined(HAVE_SHA384UPDATE) || \
+    !defined(HAVE_SHA512UPDATE)
 
 /*** SHA-256/384/512 Various Length Definitions ***********************/
 #define SHA224_BLOCK_LENGTH             64
@@ -66,6 +73,7 @@ typedef struct _SHA2_CTX {
         u_int8_t        buffer[SHA512_BLOCK_LENGTH];
 } SHA2_CTX;
 
+#if 0
 __BEGIN_DECLS
 void SHA224Init(SHA2_CTX *);
 void SHA224Transform(u_int32_t state[8], const u_int8_t [SHA224_BLOCK_LENGTH]);
@@ -83,7 +91,9 @@ char *SHA224FileChunk(const char *, char *, off_t, off_t)
 char *SHA224Data(const u_int8_t *, size_t, char *)
         __attribute__((__bounded__(__string__,1,2)))
         __attribute__((__bounded__(__minbytes__,3,SHA224_DIGEST_STRING_LENGTH)));
+#endif /* 0 */
 
+#ifndef HAVE_SHA256UPDATE
 void SHA256Init(SHA2_CTX *);
 void SHA256Transform(u_int32_t state[8], const u_int8_t [SHA256_BLOCK_LENGTH]);
 void SHA256Update(SHA2_CTX *, const u_int8_t *, size_t)
@@ -100,7 +110,9 @@ char *SHA256FileChunk(const char *, char *, off_t, off_t)
 char *SHA256Data(const u_int8_t *, size_t, char *)
         __attribute__((__bounded__(__string__,1,2)))
         __attribute__((__bounded__(__minbytes__,3,SHA256_DIGEST_STRING_LENGTH)));
+#endif /* HAVE_SHA256UPDATE */
 
+#ifndef HAVE_SHA384UPDATE
 void SHA384Init(SHA2_CTX *);
 void SHA384Transform(u_int64_t state[8], const u_int8_t [SHA384_BLOCK_LENGTH]);
 void SHA384Update(SHA2_CTX *, const u_int8_t *, size_t)
@@ -117,7 +129,9 @@ char *SHA384FileChunk(const char *, char *, off_t, off_t)
 char *SHA384Data(const u_int8_t *, size_t, char *)
         __attribute__((__bounded__(__string__,1,2)))
         __attribute__((__bounded__(__minbytes__,3,SHA384_DIGEST_STRING_LENGTH)));
+#endif /* HAVE_SHA384UPDATE */
 
+#ifndef HAVE_SHA512UPDATE
 void SHA512Init(SHA2_CTX *);
 void SHA512Transform(u_int64_t state[8], const u_int8_t [SHA512_BLOCK_LENGTH]);
 void SHA512Update(SHA2_CTX *, const u_int8_t *, size_t)
@@ -134,7 +148,9 @@ char *SHA512FileChunk(const char *, char *, off_t, off_t)
 char *SHA512Data(const u_int8_t *, size_t, char *)
         __attribute__((__bounded__(__string__,1,2)))
         __attribute__((__bounded__(__minbytes__,3,SHA512_DIGEST_STRING_LENGTH)));
+#endif /* HAVE_SHA512UPDATE */
 
+#if 0
 void SHA512_256Init(SHA2_CTX *);
 void SHA512_256Transform(u_int64_t state[8], const u_int8_t [SHA512_256_BLOCK_LENGTH]);
 void SHA512_256Update(SHA2_CTX *, const u_int8_t *, size_t)
@@ -152,5 +168,8 @@ char *SHA512_256Data(const u_int8_t *, size_t, char *)
         __attribute__((__bounded__(__string__,1,2)))
         __attribute__((__bounded__(__minbytes__,3,SHA512_256_DIGEST_STRING_LENGTH)));
 __END_DECLS
+#endif /* 0 */
+
+#endif /* HAVE_SHA{256,384,512}UPDATE */
 
-#endif /* _SHA2_H */
+#endif /* _SSHSHA2_H */