From 6a816b175e1b14127ae30df69d96ee2d64b28ed6 Mon Sep 17 00:00:00 2001
From: tb <tb@openbsd.org>
Date: Wed, 1 Mar 2023 11:25:25 +0000
Subject: [PATCH] Make cipher_method_lib.c compile with LibreSSL

OPENSSL_zalloc() -> calloc(), OPENSSL_free() -> free() and a few assorted
cosmetic tweaks to match our style better.

ok jsing
---
 lib/libcrypto/evp/cipher_method_lib.c | 44 ++++++++++++++++++---------
 1 file changed, 29 insertions(+), 15 deletions(-)

diff --git a/lib/libcrypto/evp/cipher_method_lib.c b/lib/libcrypto/evp/cipher_method_lib.c
index a0b2830efad..dc370504080 100644
--- a/lib/libcrypto/evp/cipher_method_lib.c
+++ b/lib/libcrypto/evp/cipher_method_lib.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cipher_method_lib.c,v 1.6 2023/03/01 11:08:37 tb Exp $ */
+/*	$OpenBSD: cipher_method_lib.c,v 1.7 2023/03/01 11:25:25 tb Exp $ */
 /*
  * Written by Richard Levitte (levitte@openssl.org) for the OpenSSL project
  * 2015.
@@ -57,46 +57,52 @@
  *
  */
 
-#include <string.h>
+#include <stdlib.h>
 
 #include <openssl/evp.h>
-#include "crypto/evp.h"
+
 #include "evp_local.h"
 
 EVP_CIPHER *
 EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len)
 {
-	EVP_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_CIPHER));
+	EVP_CIPHER *cipher;
+
+	if ((cipher = calloc(1, sizeof(*cipher))) == NULL)
+		return NULL;
+
+	cipher->nid = cipher_type;
+	cipher->block_size = block_size;
+	cipher->key_len = key_len;
 
-	if (cipher != NULL) {
-		cipher->nid = cipher_type;
-		cipher->block_size = block_size;
-		cipher->key_len = key_len;
-	}
 	return cipher;
 }
 
 EVP_CIPHER *
 EVP_CIPHER_meth_dup(const EVP_CIPHER *cipher)
 {
-	EVP_CIPHER *to = EVP_CIPHER_meth_new(cipher->nid, cipher->block_size,
-	    cipher->key_len);
+	EVP_CIPHER *copy;
+
+	if ((copy = EVP_CIPHER_meth_new(cipher->nid, cipher->block_size,
+	    cipher->key_len)) == NULL)
+		return NULL;
 
-	if (to != NULL)
-		memcpy(to, cipher, sizeof(*to));
-	return to;
+	*copy = *cipher;
+
+	return copy;
 }
 
 void
 EVP_CIPHER_meth_free(EVP_CIPHER *cipher)
 {
-	OPENSSL_free(cipher);
+	free(cipher);
 }
 
 int
 EVP_CIPHER_meth_set_iv_length(EVP_CIPHER *cipher, int iv_len)
 {
 	cipher->iv_len = iv_len;
+
 	return 1;
 }
 
@@ -104,6 +110,7 @@ int
 EVP_CIPHER_meth_set_flags(EVP_CIPHER *cipher, unsigned long flags)
 {
 	cipher->flags = flags;
+
 	return 1;
 }
 
@@ -111,6 +118,7 @@ int
 EVP_CIPHER_meth_set_impl_ctx_size(EVP_CIPHER *cipher, int ctx_size)
 {
 	cipher->ctx_size = ctx_size;
+
 	return 1;
 }
 
@@ -120,6 +128,7 @@ EVP_CIPHER_meth_set_init(EVP_CIPHER *cipher,
     const unsigned char *iv, int enc))
 {
 	cipher->init = init;
+
 	return 1;
 }
 
@@ -129,6 +138,7 @@ EVP_CIPHER_meth_set_do_cipher(EVP_CIPHER *cipher,
     const unsigned char *in, size_t inl))
 {
 	cipher->do_cipher = do_cipher;
+
 	return 1;
 }
 
@@ -137,6 +147,7 @@ EVP_CIPHER_meth_set_cleanup(EVP_CIPHER *cipher,
     int (*cleanup)(EVP_CIPHER_CTX *))
 {
 	cipher->cleanup = cleanup;
+
 	return 1;
 }
 
@@ -145,6 +156,7 @@ EVP_CIPHER_meth_set_set_asn1_params(EVP_CIPHER *cipher,
     int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *))
 {
 	cipher->set_asn1_parameters = set_asn1_parameters;
+
 	return 1;
 }
 
@@ -153,6 +165,7 @@ EVP_CIPHER_meth_set_get_asn1_params(EVP_CIPHER *cipher,
     int (*get_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *))
 {
 	cipher->get_asn1_parameters = get_asn1_parameters;
+
 	return 1;
 }
 
@@ -161,5 +174,6 @@ EVP_CIPHER_meth_set_ctrl(EVP_CIPHER *cipher,
     int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr))
 {
 	cipher->ctrl = ctrl;
+
 	return 1;
 }
-- 
2.20.1