From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/ext/digest/sha2/sha2init.c | 58 +++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 jni/ruby/ext/digest/sha2/sha2init.c

(limited to 'jni/ruby/ext/digest/sha2/sha2init.c')

diff --git a/jni/ruby/ext/digest/sha2/sha2init.c b/jni/ruby/ext/digest/sha2/sha2init.c
new file mode 100644
index 0000000..a48a967
--- /dev/null
+++ b/jni/ruby/ext/digest/sha2/sha2init.c
@@ -0,0 +1,58 @@
+/* $RoughId: sha2init.c,v 1.3 2001/07/13 20:00:43 knu Exp $ */
+/* $Id: sha2init.c 47745 2014-09-30 08:29:02Z nobu $ */
+
+#include "digest.h"
+#if defined(SHA2_USE_OPENSSL)
+#include "sha2ossl.h"
+#else
+#include "sha2.h"
+#endif
+
+#define FOREACH_BITLEN(func)	func(256) func(384) func(512)
+
+#define DEFINE_ALGO_METADATA(bitlen) \
+static const rb_digest_metadata_t sha##bitlen = { \
+    RUBY_DIGEST_API_VERSION, \
+    SHA##bitlen##_DIGEST_LENGTH, \
+    SHA##bitlen##_BLOCK_LENGTH, \
+    sizeof(SHA##bitlen##_CTX), \
+    (rb_digest_hash_init_func_t)SHA##bitlen##_Init, \
+    (rb_digest_hash_update_func_t)SHA##bitlen##_Update, \
+    (rb_digest_hash_finish_func_t)SHA##bitlen##_Finish, \
+};
+
+FOREACH_BITLEN(DEFINE_ALGO_METADATA)
+
+/*
+ * Classes for calculating message digests using the SHA-256/384/512
+ * Secure Hash Algorithm(s) by NIST (the US' National Institute of
+ * Standards and Technology), described in FIPS PUB 180-2.
+ */
+void
+Init_sha2(void)
+{
+    VALUE mDigest, cDigest_Base;
+    ID id_metadata;
+
+#define DECLARE_ALGO_CLASS(bitlen) \
+    VALUE cDigest_SHA##bitlen;
+
+    FOREACH_BITLEN(DECLARE_ALGO_CLASS)
+
+    rb_require("digest");
+
+    id_metadata = rb_intern("metadata");
+
+    mDigest = rb_path2class("Digest");
+    cDigest_Base = rb_path2class("Digest::Base");
+
+#define DEFINE_ALGO_CLASS(bitlen) \
+    cDigest_SHA##bitlen = rb_define_class_under(mDigest, "SHA" #bitlen, cDigest_Base); \
+\
+    rb_ivar_set(cDigest_SHA##bitlen, id_metadata, \
+		Data_Wrap_Struct(0, 0, 0, (void *)&sha##bitlen));
+
+#undef RUBY_UNTYPED_DATA_WARNING
+#define RUBY_UNTYPED_DATA_WARNING 0
+    FOREACH_BITLEN(DEFINE_ALGO_CLASS)
+}
-- 
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