fe372028dc
Added llformat_to_utf8 Added LLProcessLauncher::getExecutable() LLStringTableEntry() ctor and dtor definitions moved from .h to .cpp (should be safe)
547 lines
15 KiB
C++
547 lines
15 KiB
C++
/**
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* @file llmd5.cpp
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*
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* $LicenseInfo:firstyear=2001&license=viewergpl$
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*
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* Copyright (c) 2001-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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// llMD5.CC - source code for the C++/object oriented translation and
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// modification of MD5.
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//
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// Adapted to Linden Lab by Frank Filipanits, 6/25/2002
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// Fixed potential memory leak, James Cook, 6/27/2002
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// Translation and modification (c) 1995 by Mordechai T. Abzug
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// This translation/ modification is provided "as is," without express or
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// implied warranty of any kind.
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// The translator/ modifier does not claim (1) that MD5 will do what you think
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// it does; (2) that this translation/ modification is accurate; or (3) that
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// this software is "merchantible." (Language for this disclaimer partially
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// copied from the disclaimer below).
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/* based on:
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MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
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MDDRIVER.C - test driver for MD2, MD4 and MD5
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Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
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rights reserved.
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License to copy and use this software is granted provided that it
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is identified as the "RSA Data Security, Inc. MD5 Message-Digest
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Algorithm" in all material mentioning or referencing this software
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or this function.
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License is also granted to make and use derivative works provided
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that such works are identified as "derived from the RSA Data
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Security, Inc. MD5 Message-Digest Algorithm" in all material
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mentioning or referencing the derived work.
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RSA Data Security, Inc. makes no representations concerning either
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the merchantability of this software or the suitability of this
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software for any particular purpose. It is provided "as is"
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without express or implied warranty of any kind.
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These notices must be retained in any copies of any part of this
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documentation and/or software.
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*/
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#include "linden_common.h"
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#include "llmd5.h"
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#include <cassert>
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#include <iostream> // cerr
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// how many bytes to grab at a time when checking files
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const int LLMD5::BLOCK_LEN = 4096;
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// LLMD5 simple initialization method
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LLMD5::LLMD5()
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{
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init();
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}
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// MD5 block update operation. Continues an MD5 message-digest
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// operation, processing another message block, and updating the
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// context.
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void LLMD5::update (const uint1 *input, const uint4 input_length) {
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uint4 input_index, buffer_index;
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uint4 buffer_space; // how much space is left in buffer
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if (finalized){ // so we can't update!
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std::cerr << "LLMD5::update: Can't update a finalized digest!" << std::endl;
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return;
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}
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// Compute number of bytes mod 64
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buffer_index = (unsigned int)((count[0] >> 3) & 0x3F);
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// Update number of bits
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if ( (count[0] += ((uint4) input_length << 3))<((uint4) input_length << 3) )
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count[1]++;
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count[1] += ((uint4)input_length >> 29);
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buffer_space = 64 - buffer_index; // how much space is left in buffer
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// Transform as many times as possible.
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if (input_length >= buffer_space) { // ie. we have enough to fill the buffer
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// fill the rest of the buffer and transform
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memcpy( /* Flawfinder: ignore */
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buffer + buffer_index,
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input,
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buffer_space);
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transform (buffer);
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// now, transform each 64-byte piece of the input, bypassing the buffer
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if (input == NULL || input_length == 0){
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std::cerr << "LLMD5::update: Invalid input!" << std::endl;
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return;
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}
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for (input_index = buffer_space; input_index + 63 < input_length;
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input_index += 64)
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transform (input+input_index);
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buffer_index = 0; // so we can buffer remaining
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}
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else
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input_index=0; // so we can buffer the whole input
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// and here we do the buffering:
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memcpy(buffer+buffer_index, input+input_index, input_length-input_index); /* Flawfinder: ignore */
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}
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// MD5 update for files.
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// Like above, except that it works on files (and uses above as a primitive.)
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void LLMD5::update(FILE* file){
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unsigned char buffer[BLOCK_LEN]; /* Flawfinder: ignore */
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int len;
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while ( (len=(int)fread(buffer, 1, BLOCK_LEN, file)) )
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update(buffer, len);
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fclose (file);
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}
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// MD5 update for istreams.
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// Like update for files; see above.
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void LLMD5::update(std::istream& stream){
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unsigned char buffer[BLOCK_LEN]; /* Flawfinder: ignore */
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int len;
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while (stream.good()){
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stream.read( (char*)buffer, BLOCK_LEN); /* Flawfinder: ignore */ // note that return value of read is unusable.
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len=stream.gcount();
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update(buffer, len);
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}
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}
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void LLMD5::update(const std::string& s)
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{
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update((unsigned char *)s.c_str(),s.length());
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}
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// MD5 finalization. Ends an MD5 message-digest operation, writing the
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// the message digest and zeroizing the context.
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void LLMD5::finalize (){
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unsigned char bits[8]; /* Flawfinder: ignore */
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unsigned int index, padLen;
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static uint1 PADDING[64]={
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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if (finalized){
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std::cerr << "LLMD5::finalize: Already finalized this digest!" << std::endl;
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return;
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}
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// Save number of bits
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encode (bits, count, 8);
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// Pad out to 56 mod 64.
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index = (uint4) ((count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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update (PADDING, padLen);
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// Append length (before padding)
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update (bits, 8);
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// Store state in digest
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encode (digest, state, 16);
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// Zeroize sensitive information
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memset (buffer, 0, sizeof(*buffer));
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finalized=1;
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}
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LLMD5::LLMD5(FILE *file){
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init(); // must be called be all constructors
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update(file);
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finalize ();
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}
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LLMD5::LLMD5(std::istream& stream){
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init(); // must called by all constructors
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update (stream);
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finalize();
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}
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// Digest a string of the format ("%s:%i" % (s, number))
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LLMD5::LLMD5(const unsigned char *string, const unsigned int number)
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{
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const char *colon = ":";
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char tbuf[16]; /* Flawfinder: ignore */
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init();
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update(string, (U32)strlen((const char *) string)); /* Flawfinder: ignore */
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update((const unsigned char *) colon, (U32)strlen(colon)); /* Flawfinder: ignore */
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snprintf(tbuf, sizeof(tbuf), "%i", number); /* Flawfinder: ignore */
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update((const unsigned char *) tbuf, (U32)strlen(tbuf)); /* Flawfinder: ignore */
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finalize();
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}
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// Digest a string
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LLMD5::LLMD5(const unsigned char *s)
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{
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init();
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update(s, (U32)strlen((const char *) s)); /* Flawfinder: ignore */
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finalize();
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}
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void LLMD5::raw_digest(unsigned char *s) const
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{
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if (!finalized)
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{
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std::cerr << "LLMD5::raw_digest: Can't get digest if you haven't "<<
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"finalized the digest!" << std::endl;
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s[0] = '\0';
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return;
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}
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memcpy(s, digest, 16); /* Flawfinder: ignore */
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return;
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}
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void LLMD5::hex_digest(char *s) const
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{
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int i;
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if (!finalized)
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{
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std::cerr << "LLMD5::hex_digest: Can't get digest if you haven't "<<
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"finalized the digest!" <<std::endl;
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s[0] = '\0';
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return;
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}
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for (i=0; i<16; i++)
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{
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sprintf(s+i*2, "%02x", digest[i]); /* Flawfinder: ignore */
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}
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s[32]='\0';
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return;
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}
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std::ostream& operator<<(std::ostream &stream, LLMD5 context)
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{
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char s[33]; /* Flawfinder: ignore */
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context.hex_digest(s);
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stream << s;
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return stream;
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}
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bool operator==(const LLMD5& a, const LLMD5& b)
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{
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unsigned char a_guts[16];
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unsigned char b_guts[16];
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a.raw_digest(a_guts);
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b.raw_digest(b_guts);
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if (memcmp(a_guts,b_guts,16)==0)
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return true;
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else
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return false;
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}
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bool operator!=(const LLMD5& a, const LLMD5& b)
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{
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return !(a==b);
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}
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// PRIVATE METHODS:
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void LLMD5::init(){
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finalized=0; // we just started!
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// Nothing counted, so count=0
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count[0] = 0;
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count[1] = 0;
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// Load magic initialization constants.
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state[0] = 0x67452301;
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state[1] = 0xefcdab89;
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state[2] = 0x98badcfe;
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state[3] = 0x10325476;
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}
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// Constants for MD5Transform routine.
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// Although we could use C++ style constants, defines are actually better,
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// since they let us easily evade scope clashes.
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#define S11 7
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#define S12 12
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#define S13 17
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#define S14 22
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#define S21 5
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#define S22 9
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#define S23 14
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#define S24 20
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#define S31 4
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#define S32 11
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#define S33 16
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#define S34 23
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#define S41 6
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#define S42 10
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#define S43 15
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#define S44 21
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// #defines are faster then inline, etc because the compiler is not required to inline.
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// Timing tests prove that this works ~40% faster on win with msvc++2k3 over using static inline.
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/* F, G, H and I are basic MD5 functions.
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*/
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
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#define H(x, y, z) ((x) ^ (y) ^ (z))
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#define I(x, y, z) ((y) ^ ((x) | (~z)))
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/* ROTATE_LEFT rotates x left n bits.
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*/
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
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Rotation is separate from addition to prevent recomputation.
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*/
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#define FF(a, b, c, d, x, s, ac) { \
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(a) += F ((b), (c), (d)) + (x) + (U32)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define GG(a, b, c, d, x, s, ac) { \
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(a) += G ((b), (c), (d)) + (x) + (U32)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define HH(a, b, c, d, x, s, ac) { \
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(a) += H ((b), (c), (d)) + (x) + (U32)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define II(a, b, c, d, x, s, ac) { \
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(a) += I ((b), (c), (d)) + (x) + (U32)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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// LLMD5 basic transformation. Transforms state based on block.
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void LLMD5::transform (const U8 block[64]){
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uint4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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decode (x, block, 64);
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assert(!finalized); // not just a user error, since the method is private
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/* Round 1 */
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FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
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FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
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FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
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FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
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FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
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FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
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FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
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FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
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FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
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FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
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FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
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FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
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FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
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FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
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FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
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FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
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/* Round 2 */
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GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
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GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
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GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
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GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
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GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
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GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
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GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
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GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
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GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
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GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
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GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
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GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
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GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
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GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
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GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
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GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
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/* Round 3 */
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HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
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HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
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HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
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HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
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HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
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HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
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HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
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HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
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HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
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HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
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HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
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HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
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HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
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HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
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HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
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HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
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/* Round 4 */
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II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
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II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
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II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
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II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
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II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
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II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
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II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
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II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
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II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
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II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
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II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
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|
II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
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|
II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
|
|
II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
|
|
II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
|
|
II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
|
|
|
|
state[0] += a;
|
|
state[1] += b;
|
|
state[2] += c;
|
|
state[3] += d;
|
|
|
|
// Zeroize sensitive information.
|
|
memset ( (uint1 *) x, 0, sizeof(x));
|
|
|
|
}
|
|
|
|
|
|
|
|
// Encodes input (UINT4) into output (unsigned char). Assumes len is
|
|
// a multiple of 4.
|
|
void LLMD5::encode (uint1 *output, const uint4 *input, const uint4 len) {
|
|
|
|
unsigned int i, j;
|
|
|
|
for (i = 0, j = 0; j < len; i++, j += 4) {
|
|
output[j] = (uint1) (input[i] & 0xff);
|
|
output[j+1] = (uint1) ((input[i] >> 8) & 0xff);
|
|
output[j+2] = (uint1) ((input[i] >> 16) & 0xff);
|
|
output[j+3] = (uint1) ((input[i] >> 24) & 0xff);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
// Decodes input (unsigned char) into output (UINT4). Assumes len is
|
|
// a multiple of 4.
|
|
void LLMD5::decode (uint4 *output, const uint1 *input, const uint4 len){
|
|
|
|
unsigned int i, j;
|
|
|
|
for (i = 0, j = 0; j < len; i++, j += 4)
|
|
output[i] = ((uint4)input[j]) | (((uint4)input[j+1]) << 8) |
|
|
(((uint4)input[j+2]) << 16) | (((uint4)input[j+3]) << 24);
|
|
}
|