libarchive: Add headers to adapt between OpenSSL 1.1 and older versions

Add private forwarding headers for `openssl/{evp,hmac}.h` to give us a
central place to add adaptation code to work across multiple
incompatible OpenSSL versions.  Provide compatibility implementations of
some OpenSSL 1.1 APIs when using older OpenSSL versions.

Utilities/cmlibarchive/libarchive/CMakeLists.txt

@@ -38,6 +38,8 @@ SET(libarchive_SOURCES
   archive_hmac.c
   archive_hmac_private.h
   archive_match.c
+  archive_openssl_evp_private.h
+  archive_openssl_hmac_private.h
   archive_options.c
   archive_options_private.h
   archive_pack_dev.h

Utilities/cmlibarchive/libarchive/archive_cryptor_private.h

@@ -99,7 +99,7 @@ typedef struct {
 } archive_crypto_ctx;
 
 #elif defined(HAVE_LIBCRYPTO)
-#include <openssl/evp.h>
+#include "archive_openssl_evp_private.h"
 #define AES_BLOCK_SIZE	16
 #define AES_MAX_KEY_SIZE 32
 

Utilities/cmlibarchive/libarchive/archive_digest_private.h

@@ -134,7 +134,7 @@
   defined(ARCHIVE_CRYPTO_SHA384_OPENSSL) ||\
   defined(ARCHIVE_CRYPTO_SHA512_OPENSSL)
 #define	ARCHIVE_CRYPTO_OPENSSL 1
-#include <openssl/evp.h>
+#include "archive_openssl_evp_private.h"
 #endif
 
 /* Windows crypto headers */

Utilities/cmlibarchive/libarchive/archive_hmac_private.h

@@ -70,7 +70,7 @@ typedef struct {
 typedef	struct hmac_sha1_ctx archive_hmac_sha1_ctx;
 
 #elif defined(HAVE_LIBCRYPTO)
-#include <openssl/hmac.h>
+#include "archive_openssl_hmac_private.h"
 
 typedef	HMAC_CTX archive_hmac_sha1_ctx;
 

Utilities/cmlibarchive/libarchive/archive_openssl_evp_private.h

@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 2003-2007 Tim Kientzle
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef ARCHIVE_OPENSSL_EVP_PRIVATE_H_INCLUDED
+#define ARCHIVE_OPENSSL_EVP_PRIVATE_H_INCLUDED
+
+#include <openssl/evp.h>
+#include <openssl/opensslv.h>
+
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#include <stdlib.h> /* malloc, free */
+#include <string.h> /* memset */
+static inline EVP_MD_CTX *EVP_MD_CTX_new(void)
+{
+	EVP_MD_CTX *ctx = (EVP_MD_CTX *)malloc(sizeof(EVP_MD_CTX));
+	if (ctx != NULL) {
+		memset(ctx, 0, sizeof(*ctx));
+	}
+	return ctx;
+}
+
+static inline void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
+{
+	EVP_MD_CTX_cleanup(ctx);
+	memset(ctx, 0, sizeof(*ctx));
+	free(ctx);
+}
+#endif
+
+#endif

Utilities/cmlibarchive/libarchive/archive_openssl_hmac_private.h

@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 2003-2007 Tim Kientzle
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef ARCHIVE_OPENSSL_HMAC_PRIVATE_H_INCLUDED
+#define ARCHIVE_OPENSSL_HMAC_PRIVATE_H_INCLUDED
+
+#include <openssl/hmac.h>
+#include <openssl/opensslv.h>
+
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#include <stdlib.h> /* malloc, free */
+#include <string.h> /* memset */
+static inline HMAC_CTX *HMAC_CTX_new(void)
+{
+	HMAC_CTX *ctx = (HMAC_CTX *)malloc(sizeof(HMAC_CTX));
+	if (ctx != NULL) {
+		memset(ctx, 0, sizeof(*ctx));
+		HMAC_CTX_init(ctx);
+	}
+	return ctx;
+}
+
+static inline void HMAC_CTX_free(HMAC_CTX *ctx)
+{
+	HMAC_CTX_cleanup(ctx);
+	memset(ctx, 0, sizeof(*ctx));
+	free(ctx);
+}
+#endif
+
+#endif