112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_SHA1_H
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#define NL_SHA1_H
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#include "types_nl.h"
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#include "common.h"
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#include "stream.h"
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#include <string>
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struct CHashKey
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{
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CHashKey () { HashKeyString.resize(20); }
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CHashKey (const unsigned char Message_Digest[20])
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{
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HashKeyString.clear();
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for(sint i = 0; i < 20 ; ++i)
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{
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HashKeyString += Message_Digest[i];
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}
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}
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// Init the hash key with a binary key format or a text key format
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CHashKey (const std::string &str)
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{
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if (str.size() == 20)
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{
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HashKeyString = str;
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}
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else if (str.size() == 40)
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{
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HashKeyString.clear();
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for(uint i = 0; i < str.size(); i+=2)
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{
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uint8 val;
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if (isdigit((unsigned char)str[i+0]))
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val = str[i+0]-'0';
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else
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val = 10+tolower(str[i+0])-'a';
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val *= 16;
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if (isdigit((unsigned char)str[i+1]))
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val += str[i+1]-'0';
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else
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val += 10+tolower(str[i+1])-'a';
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HashKeyString += val;
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}
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}
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else
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{
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nlwarning ("SHA: Bad hash key format");
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}
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}
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// return the hash key in text format
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std::string toString() const
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{
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std::string str;
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for (uint i = 0; i < HashKeyString.size(); i++)
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{
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str += NLMISC::toString("%02X", (uint8)(HashKeyString[i]));
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}
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return str;
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}
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// serial the hash key in binary format
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void serial (NLMISC::IStream &stream)
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{
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stream.serial (HashKeyString);
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}
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bool operator==(const CHashKey &v) const
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{
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return HashKeyString == v.HashKeyString;
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}
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// this string is always 20 bytes long and is the code in binary format (can't print it directly)
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std::string HashKeyString;
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};
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inline bool operator <(const struct CHashKey &a,const struct CHashKey &b)
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{
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return a.HashKeyString<b.HashKeyString;
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}
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// This function get a filename (it works with big files) and returns his SHA hash key
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// when forcePath is true, it doesn't use NLMISC::lookup
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CHashKey getSHA1(const std::string &filename, bool forcePath = false);
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// This function get a buffer with size and returns his SHA hash key
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CHashKey getSHA1(const uint8 *buffer, uint32 size);
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// This function get a buffer and key with size and returns his HMAC-SHA1 hash key
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CHashKey getHMacSHA1(const uint8 *text, uint32 text_len, const uint8 *key, uint32 key_len);
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#endif // NL_SHA1_H
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