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authorBryan O'Sullivan <bos@lindenlab.com>2008-06-02 21:14:31 +0000
committerBryan O'Sullivan <bos@lindenlab.com>2008-06-02 21:14:31 +0000
commit9db949eec327df4173fde3de934a87bedb0db13c (patch)
treeaeffa0f0e68b1d2ceb74d460cbbd22652c9cd159 /indra/llcommon/llmd5.h
parent419e13d0acaabf5e1e02e9b64a07648bce822b2f (diff)
svn merge -r88066:88786 svn+ssh://svn.lindenlab.com/svn/linden/branches/cmake-9-merge
dataserver-is-deprecated for-fucks-sake-whats-with-these-commit-markers
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+/**
+ * @file llmd5.h
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ *
+ * Copyright (c) 2001-2007, Linden Research, Inc.
+ *
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab. Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ *
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ *
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ *
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLMD5_H
+#define LL_LLMD5_H
+
+// LLMD5.CC - source code for the C++/object oriented translation and
+// modification of MD5.
+
+// Translation and modification (c) 1995 by Mordechai T. Abzug
+
+// This translation/ modification is provided "as is," without express or
+// implied warranty of any kind.
+
+// The translator/ modifier does not claim (1) that MD5 will do what you think
+// it does; (2) that this translation/ modification is accurate; or (3) that
+// this software is "merchantible." (Language for this disclaimer partially
+// copied from the disclaimer below).
+
+/* based on:
+
+ MD5.H - header file for MD5C.C
+ MDDRIVER.C - test driver for MD2, MD4 and MD5
+
+ Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+rights reserved.
+
+License to copy and use this software is granted provided that it
+is identified as the "RSA Data Security, Inc. MD5 Message-Digest
+Algorithm" in all material mentioning or referencing this software
+or this function.
+
+License is also granted to make and use derivative works provided
+that such works are identified as "derived from the RSA Data
+Security, Inc. MD5 Message-Digest Algorithm" in all material
+mentioning or referencing the derived work.
+
+RSA Data Security, Inc. makes no representations concerning either
+the merchantability of this software or the suitability of this
+software for any particular purpose. It is provided "as is"
+without express or implied warranty of any kind.
+
+These notices must be retained in any copies of any part of this
+documentation and/or software.
+
+*/
+
+// use for the raw digest output
+const int MD5RAW_BYTES = 16;
+
+// use for outputting hex digests
+const int MD5HEX_STR_SIZE = 33; // char hex[MD5HEX_STR_SIZE]; with null
+const int MD5HEX_STR_BYTES = 32; // message system fixed size
+
+class LLMD5 {
+// first, some types:
+ typedef unsigned int uint4; // assumes integer is 4 words long
+ typedef unsigned short int uint2; // assumes short integer is 2 words long
+ typedef unsigned char uint1; // assumes char is 1 word long
+
+// how many bytes to grab at a time when checking files
+ static const int BLOCK_LEN;
+
+public:
+// methods for controlled operation:
+ LLMD5 (); // simple initializer
+ void update (const uint1 *input, const uint4 input_length);
+ void update (std::istream& stream);
+ void update (FILE *file);
+ void finalize ();
+
+// constructors for special circumstances. All these constructors finalize
+// the MD5 context.
+ LLMD5 (const unsigned char *string); // digest string, finalize
+ LLMD5 (std::istream& stream); // digest stream, finalize
+ LLMD5 (FILE *file); // digest file, close, finalize
+ LLMD5 (const unsigned char *string, const unsigned int number);
+
+// methods to acquire finalized result
+ void raw_digest(unsigned char *array); // provide 16-byte array for binary data
+ void hex_digest(char *string); // provide 33-byte array for ascii-hex string
+ friend std::ostream& operator<< (std::ostream&, LLMD5 context);
+
+
+
+private:
+
+
+// next, the private data:
+ uint4 state[4];
+ uint4 count[2]; // number of *bits*, mod 2^64
+ uint1 buffer[64]; // input buffer
+ uint1 digest[16];
+ uint1 finalized;
+
+// last, the private methods, mostly static:
+ void init (); // called by all constructors
+ void transform (const uint1 *buffer); // does the real update work. Note
+ // that length is implied to be 64.
+
+ static void encode (uint1 *dest, const uint4 *src, const uint4 length);
+ static void decode (uint4 *dest, const uint1 *src, const uint4 length);
+
+};
+
+#endif // LL_LLMD5_H