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186 lines
6.3 KiB
186 lines
6.3 KiB
/*==LICENSE==* |
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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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 General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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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 General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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Additional permissions under GNU GPL version 3 section 7 |
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If you modify this Program, or any covered work, by linking or |
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
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(or a modified version of those libraries), |
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
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licensors of this Program grant you additional |
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permission to convey the resulting work. Corresponding Source for a |
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non-source form of such a combination shall include the source code for |
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
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work. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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/***************************************************************************** |
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* |
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* $/Plasma20/Sources/Plasma/NucleusLib/pnUtils/Private/pnUtBase64.cpp |
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* |
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***/ |
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#include "../Pch.h" |
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#pragma hdrstop |
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/***************************************************************************** |
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* |
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* Private |
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* |
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***/ |
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static const char kEncode64[] = { |
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// 0000000000111111111122222222223333333333444444444455555555556666 |
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// 0123456789012345678901234567890123456789012345678901234567890123 |
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" |
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}; |
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// Note that the decode table contains one special entry: |
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// The '-' character (0x2d) maps to 63 just like '/' (0x2f) |
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// so that URLs will work with Base64Decode when we implement them. |
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#define kTerminator 127 |
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#define xx kTerminator |
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static const char kDecode64[] = { |
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// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,62,xx,63,xx,63, |
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52,53,54,55,56,57,58,59,60,61,xx,xx,xx,xx,xx,xx, |
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xx, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14, |
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15,16,17,18,19,20,21,22,23,24,25,xx,xx,xx,xx,xx, |
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xx,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40, |
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41,42,43,44,45,46,47,48,49,50,51,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx, |
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}; |
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#undef xx |
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static const char kFillchar = '='; |
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/***************************************************************************** |
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* |
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* Exports |
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* |
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***/ |
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//============================================================================ |
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unsigned Base64Encode ( |
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unsigned srcChars, |
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const byte srcData[], |
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unsigned dstChars, |
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char * dstData |
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) { |
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ASSERT(srcData); |
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ASSERT(dstChars >= Base64EncodeSize(srcChars)); |
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ASSERT(dstData); |
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REF(dstChars); |
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const char * dstBase = dstData; |
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const byte * srcTerm = srcData + srcChars; |
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for (;;) switch (srcTerm - srcData) { |
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case 0: |
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*dstData++ = 0; |
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return dstData - dstBase; |
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case 1: |
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*dstData++ = kEncode64[ ((srcData[0] >> 2) & 0x3f) ]; |
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*dstData++ = kEncode64[ ((srcData[0] << 4) & 0x30) ]; |
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*dstData++ = kFillchar; |
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*dstData++ = kFillchar; |
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*dstData++ = 0; |
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return dstData - dstBase; |
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case 2: |
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*dstData++ = kEncode64[ ((srcData[0] >> 2) & 0x3f) ]; |
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*dstData++ = kEncode64[ ((srcData[0] << 4) & 0x30) + ((srcData[1] >> 4) & 0x0f) ]; |
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*dstData++ = kEncode64[ ((srcData[1] << 2) & 0x3c) ]; |
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*dstData++ = kFillchar; |
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*dstData++ = 0; |
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return dstData - dstBase; |
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default: |
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*dstData++ = kEncode64[ ((srcData[0] >> 2) & 0x3f) ]; |
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*dstData++ = kEncode64[ ((srcData[0] << 4) & 0x30) + ((srcData[1] >> 4) & 0x0f) ]; |
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*dstData++ = kEncode64[ ((srcData[1] << 2) & 0x3c) + ((srcData[2] >> 6) & 0x03) ]; |
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*dstData++ = kEncode64[ (srcData[2] & 0x3f) ]; |
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srcData += 3; |
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break; |
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} |
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} |
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//============================================================================ |
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unsigned Base64Decode ( |
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unsigned srcChars, |
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const char srcData[], |
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unsigned dstChars, |
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byte * dstData |
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) { |
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ASSERT(srcData); |
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ASSERT(dstChars >= Base64DecodeSize(srcChars)); |
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ASSERT(dstData); |
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REF(dstChars); |
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const byte * dstBase = dstData; |
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const char * srcTerm = srcData + srcChars; |
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while (srcTerm - srcData >= 4) { |
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*dstData++ = (byte) ( |
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(kDecode64[srcData[0]] << 2 & 0xfc) |
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+(kDecode64[srcData[1]] >> 4 & 0x03) |
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); |
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if (kDecode64[srcData[2]] == kTerminator) |
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break; |
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*dstData++ = (byte) ( |
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(kDecode64[srcData[1]] << 4 & 0xf0) |
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+(kDecode64[srcData[2]] >> 2 & 0x0f) |
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); |
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if (kDecode64[srcData[3]] == kTerminator) |
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break; |
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*dstData++ = (byte) ( |
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(kDecode64[srcData[2]] << 6 & 0xc0) |
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+(kDecode64[srcData[3]]) |
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); |
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srcData += 4; |
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} |
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return dstData - dstBase; |
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}
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