From be0cfca23695b7e412c4dbaa74ea726456e81d04 Mon Sep 17 00:00:00 2001
From: Sadie Powell
Date: Fri, 5 Mar 2021 06:51:58 +0000
Subject: Implement support for other SHA2 hash types.

---
 src/modules/m_sha2.cpp | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 src/modules/m_sha2.cpp

(limited to 'src/modules/m_sha2.cpp')

diff --git a/src/modules/m_sha2.cpp b/src/modules/m_sha2.cpp
new file mode 100644
index 000000000..3c3560d5c
--- /dev/null
+++ b/src/modules/m_sha2.cpp
@@ -0,0 +1,71 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
+ *   Copyright (C) 2013, 2017-2018 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2006, 2010 Craig Edwards <brain@inspircd.org>
+ *
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/// $CompilerFlags: -Ivendor_directory("sha2")
+
+
+#include "inspircd.h"
+#include "modules/hash.h"
+
+#include <sha2.c>
+
+template<void (*SHA)(const unsigned char*, unsigned int, unsigned char*)>
+class HashSHA2 : public HashProvider
+{
+ public:
+	HashSHA2(Module* parent, const std::string& Name, unsigned int osize, unsigned int bsize)
+		: HashProvider(parent, Name, osize, bsize)
+	{
+	}
+
+	std::string GenerateRaw(const std::string& data) override
+	{
+		std::vector<char> bytes(out_size);
+		SHA((unsigned char*)data.data(), data.size(), (unsigned char*)&bytes[0]);
+		return std::string(&bytes[0], bytes.size());
+	}
+};
+
+
+class ModuleSHA2 : public Module
+{
+ private:
+	HashSHA2<sha224> sha224algo;
+	HashSHA2<sha256> sha256algo;
+	HashSHA2<sha384> sha384algo;
+	HashSHA2<sha512> sha512algo;
+
+ public:
+	ModuleSHA2()
+		: Module(VF_VENDOR, "Allows other modules to generate SHA-2 hashes.")
+		, sha224algo(this, "sha224", SHA224_DIGEST_SIZE, SHA224_BLOCK_SIZE)
+		, sha256algo(this, "sha256", SHA256_DIGEST_SIZE, SHA256_BLOCK_SIZE)
+		, sha384algo(this, "sha384", SHA384_DIGEST_SIZE, SHA384_BLOCK_SIZE)
+		, sha512algo(this, "sha512", SHA512_DIGEST_SIZE, SHA512_BLOCK_SIZE)
+	{
+	}
+};
+
+MODULE_INIT(ModuleSHA2)
-- 
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