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.

1 files changed, 52 insertions, 0 deletions

diff --git a/Utilities/cmlibarchive/libarchive/archive_openssl_hmac_private.h b/Utilities/cmlibarchive/libarchive/archive_openssl_hmac_private.h
new file mode 100644
index 0000000..d4ae0d1
--- /dev/null
+++ b/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