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Diffstat (limited to 'package/source/manifest/Base64Codec.cxx')
| -rw-r--r-- | package/source/manifest/Base64Codec.cxx | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/package/source/manifest/Base64Codec.cxx b/package/source/manifest/Base64Codec.cxx new file mode 100644 index 000000000000..f3c8152a3fad --- /dev/null +++ b/package/source/manifest/Base64Codec.cxx @@ -0,0 +1,207 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_package.hxx" +#include "Base64Codec.hxx" +#include <rtl/ustrbuf.hxx> +#include <osl/diagnose.h> +using namespace rtl; +using namespace osl; +using namespace com::sun::star; + +const + sal_Char aBase64EncodeTable[] = + { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', + 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', + 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', + 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', + '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' }; + +const + sal_uInt8 aBase64DecodeTable[] = + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0-15 + + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16-31 + + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63, // 32-47 +// + / + + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 0, 0, 0, // 48-63 +// 0 1 2 3 4 5 6 7 8 9 = + + 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, // 64-79 +// A B C D E F G H I J K L M N O + + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0, // 80-95 +// P Q R S T U V W X Y Z + + 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, // 96-111 +// a b c d e f g h i j k l m n o + + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0, 0, 0, 0, 0, // 112-127 +// p q r s t u v w x y z + + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; + + +void ThreeByteToFourByte (const sal_uInt8* pBuffer, const sal_Int32 nStart, const sal_Int32 nFullLen, rtl::OUStringBuffer& sBuffer) +{ + sal_Int32 nLen(nFullLen - nStart); + if (nLen > 3) + nLen = 3; + if (nLen == 0) + { + sBuffer.setLength(0); + return; + } + + sal_Int32 nBinaer; + switch (nLen) + { + case 1: + { + nBinaer = ((sal_uInt8)pBuffer[nStart + 0]) << 16; + } + break; + case 2: + { + nBinaer = (((sal_uInt8)pBuffer[nStart + 0]) << 16) + + (((sal_uInt8)pBuffer[nStart + 1]) << 8); + } + break; + default: + { + nBinaer = (((sal_uInt8)pBuffer[nStart + 0]) << 16) + + (((sal_uInt8)pBuffer[nStart + 1]) << 8) + + ((sal_uInt8)pBuffer[nStart + 2]); + } + break; + } + + sBuffer.appendAscii("===="); + + sal_uInt8 nIndex = static_cast< sal_uInt8 >((nBinaer & 0xFC0000) >> 18); + sBuffer.setCharAt(0, aBase64EncodeTable [nIndex]); + + nIndex = static_cast< sal_uInt8 >((nBinaer & 0x3F000) >> 12); + sBuffer.setCharAt(1, aBase64EncodeTable [nIndex]); + if (nLen == 1) + return; + + nIndex = static_cast< sal_uInt8 >((nBinaer & 0xFC0) >> 6); + sBuffer.setCharAt(2, aBase64EncodeTable [nIndex]); + if (nLen == 2) + return; + + nIndex = static_cast< sal_uInt8 >(nBinaer & 0x3F); + sBuffer.setCharAt(3, aBase64EncodeTable [nIndex]); +} + +void Base64Codec::encodeBase64(rtl::OUStringBuffer& aStrBuffer, const uno::Sequence < sal_uInt8 >& aPass) +{ + sal_Int32 i(0); + sal_Int32 nBufferLength(aPass.getLength()); + const sal_uInt8* pBuffer = aPass.getConstArray(); + while (i < nBufferLength) + { + rtl::OUStringBuffer sBuffer; + ThreeByteToFourByte (pBuffer, i, nBufferLength, sBuffer); + aStrBuffer.append(sBuffer); + i += 3; + } +} + +const rtl::OUString s2equal(RTL_CONSTASCII_USTRINGPARAM("==")); +const rtl::OUString s1equal(RTL_CONSTASCII_USTRINGPARAM("=")); + +void FourByteToThreeByte (sal_uInt8* pBuffer, sal_Int32& nLength, const sal_Int32 nStart, const rtl::OUString& sString) +{ + nLength = 0; + sal_Int32 nLen (sString.getLength()); + + OSL_ASSERT( nLen == 4 ); + if (nLen != 4) + return; + + if (sString.indexOf(s2equal) == 2) + nLength = 1; + else if (sString.indexOf(s1equal) == 3) + nLength = 2; + else + nLength = 3; + + sal_Int32 nBinaer ((aBase64DecodeTable [sString [0]] << 18) + + (aBase64DecodeTable [sString [1]] << 12) + + (aBase64DecodeTable [sString [2]] << 6) + + (aBase64DecodeTable [sString [3]])); + + sal_uInt8 OneByte = static_cast< sal_uInt8 >((nBinaer & 0xFF0000) >> 16); + pBuffer[nStart + 0] = (sal_uInt8)OneByte; + + if (nLength == 1) + return; + + OneByte = static_cast< sal_uInt8 >((nBinaer & 0xFF00) >> 8); + pBuffer[nStart + 1] = OneByte; + + if (nLength == 2) + return; + + OneByte = static_cast< sal_uInt8 >(nBinaer & 0xFF); + pBuffer[nStart + 2] = OneByte; +} + +void Base64Codec::decodeBase64(uno::Sequence< sal_uInt8 >& aBuffer, const rtl::OUString& sBuffer) +{ + sal_Int32 nFirstLength((sBuffer.getLength() / 4) * 3); + sal_uInt8* pBuffer = new sal_uInt8[nFirstLength]; + sal_Int32 nSecondLength(0); + sal_Int32 nLength(0); + sal_Int32 i = 0; + sal_Int32 k = 0; + while (i < sBuffer.getLength()) + { + FourByteToThreeByte (pBuffer, nLength, k, sBuffer.copy(i, 4)); + nSecondLength += nLength; + nLength = 0; + i += 4; + k += 3; + } + aBuffer = uno::Sequence<sal_uInt8>(pBuffer, nSecondLength); + delete[] pBuffer; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |