| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "xfa/fgas/crt/fgas_algorithm.h" |
| |
| #include "core/fxcrt/include/fx_basic.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| static const FX_CHAR g_FXBase64EncoderMap[64] = { |
| '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', '+', '/', |
| }; |
| |
| struct FX_BASE64DATA { |
| uint32_t data1 : 2; |
| uint32_t data2 : 6; |
| uint32_t data3 : 4; |
| uint32_t data4 : 4; |
| uint32_t data5 : 6; |
| uint32_t data6 : 2; |
| uint32_t data7 : 8; |
| }; |
| |
| static void FX_Base64EncodePiece(const FX_BASE64DATA& src, |
| int32_t iBytes, |
| FX_CHAR dst[4]) { |
| dst[0] = g_FXBase64EncoderMap[src.data2]; |
| uint32_t b = src.data1 << 4; |
| if (iBytes > 1) { |
| b |= src.data4; |
| } |
| dst[1] = g_FXBase64EncoderMap[b]; |
| if (iBytes > 1) { |
| b = src.data3 << 2; |
| if (iBytes > 2) { |
| b |= src.data6; |
| } |
| dst[2] = g_FXBase64EncoderMap[b]; |
| if (iBytes > 2) { |
| dst[3] = g_FXBase64EncoderMap[src.data5]; |
| } else { |
| dst[3] = '='; |
| } |
| } else { |
| dst[2] = dst[3] = '='; |
| } |
| } |
| int32_t FX_Base64EncodeA(const uint8_t* pSrc, int32_t iSrcLen, FX_CHAR* pDst) { |
| ASSERT(pSrc != NULL); |
| if (iSrcLen < 1) { |
| return 0; |
| } |
| if (pDst == NULL) { |
| int32_t iDstLen = iSrcLen / 3 * 4; |
| if ((iSrcLen % 3) != 0) { |
| iDstLen += 4; |
| } |
| return iDstLen; |
| } |
| FX_BASE64DATA srcData; |
| int32_t iBytes = 3; |
| FX_CHAR* pDstEnd = pDst; |
| while (iSrcLen > 0) { |
| if (iSrcLen > 2) { |
| ((uint8_t*)&srcData)[0] = *pSrc++; |
| ((uint8_t*)&srcData)[1] = *pSrc++; |
| ((uint8_t*)&srcData)[2] = *pSrc++; |
| iSrcLen -= 3; |
| } else { |
| *((uint32_t*)&srcData) = 0; |
| ((uint8_t*)&srcData)[0] = *pSrc++; |
| if (iSrcLen > 1) { |
| ((uint8_t*)&srcData)[1] = *pSrc++; |
| } |
| iBytes = iSrcLen; |
| iSrcLen = 0; |
| } |
| FX_Base64EncodePiece(srcData, iBytes, pDstEnd); |
| pDstEnd += 4; |
| } |
| return pDstEnd - pDst; |
| } |
| |
| static const uint8_t g_FXBase64DecoderMap[256] = { |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3E, 0xFF, 0xFF, 0xFF, 0x3F, |
| 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, |
| 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, |
| 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, |
| 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, |
| 0x31, 0x32, 0x33, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, |
| }; |
| static void FX_Base64DecodePiece(const FX_CHAR src[4], |
| int32_t iChars, |
| FX_BASE64DATA& dst, |
| int32_t& iBytes) { |
| ASSERT(iChars > 0 && iChars < 5); |
| iBytes = 1; |
| dst.data2 = g_FXBase64DecoderMap[(uint8_t)src[0]]; |
| if (iChars > 1) { |
| uint8_t b = g_FXBase64DecoderMap[(uint8_t)src[1]]; |
| dst.data1 = b >> 4; |
| dst.data4 = b; |
| if (iChars > 2) { |
| iBytes = 2; |
| b = g_FXBase64DecoderMap[(uint8_t)src[2]]; |
| dst.data3 = b >> 2; |
| dst.data6 = b; |
| if (iChars > 3) { |
| iBytes = 3; |
| dst.data5 = g_FXBase64DecoderMap[(uint8_t)src[3]]; |
| } else { |
| dst.data5 = 0; |
| } |
| } else { |
| dst.data3 = 0; |
| } |
| } else { |
| dst.data1 = 0; |
| } |
| } |
| int32_t FX_Base64DecodeA(const FX_CHAR* pSrc, int32_t iSrcLen, uint8_t* pDst) { |
| ASSERT(pSrc != NULL); |
| if (iSrcLen < 1) { |
| return 0; |
| } |
| while (iSrcLen > 0 && pSrc[iSrcLen - 1] == '=') { |
| iSrcLen--; |
| } |
| if (iSrcLen < 1) { |
| return 0; |
| } |
| if (pDst == NULL) { |
| int32_t iDstLen = iSrcLen / 4 * 3; |
| iSrcLen %= 4; |
| if (iSrcLen == 1) { |
| iDstLen += 1; |
| } else if (iSrcLen == 2) { |
| iDstLen += 1; |
| } else if (iSrcLen == 3) { |
| iDstLen += 2; |
| } |
| return iDstLen; |
| } |
| FX_CHAR srcData[4]; |
| FX_BASE64DATA dstData; |
| int32_t iChars = 4, iBytes; |
| uint8_t* pDstEnd = pDst; |
| while (iSrcLen > 0) { |
| if (iSrcLen > 3) { |
| *((uint32_t*)srcData) = *((uint32_t*)pSrc); |
| pSrc += 4; |
| iSrcLen -= 4; |
| } else { |
| *((uint32_t*)&dstData) = 0; |
| *((uint32_t*)srcData) = 0; |
| srcData[0] = *pSrc++; |
| if (iSrcLen > 1) { |
| srcData[1] = *pSrc++; |
| } |
| if (iSrcLen > 2) { |
| srcData[2] = *pSrc++; |
| } |
| iChars = iSrcLen; |
| iSrcLen = 0; |
| } |
| FX_Base64DecodePiece(srcData, iChars, dstData, iBytes); |
| *pDstEnd++ = ((uint8_t*)&dstData)[0]; |
| if (iBytes > 1) { |
| *pDstEnd++ = ((uint8_t*)&dstData)[1]; |
| } |
| if (iBytes > 2) { |
| *pDstEnd++ = ((uint8_t*)&dstData)[2]; |
| } |
| } |
| return pDstEnd - pDst; |
| } |
| int32_t FX_Base64DecodeW(const FX_WCHAR* pSrc, int32_t iSrcLen, uint8_t* pDst) { |
| ASSERT(pSrc != NULL); |
| if (iSrcLen < 1) { |
| return 0; |
| } |
| while (iSrcLen > 0 && pSrc[iSrcLen - 1] == '=') { |
| iSrcLen--; |
| } |
| if (iSrcLen < 1) { |
| return 0; |
| } |
| if (pDst == NULL) { |
| int32_t iDstLen = iSrcLen / 4 * 3; |
| iSrcLen %= 4; |
| if (iSrcLen == 1) { |
| iDstLen += 1; |
| } else if (iSrcLen == 2) { |
| iDstLen += 1; |
| } else if (iSrcLen == 3) { |
| iDstLen += 2; |
| } |
| return iDstLen; |
| } |
| FX_CHAR srcData[4]; |
| FX_BASE64DATA dstData; |
| int32_t iChars = 4, iBytes; |
| uint8_t* pDstEnd = pDst; |
| while (iSrcLen > 0) { |
| if (iSrcLen > 3) { |
| srcData[0] = (FX_CHAR)*pSrc++; |
| srcData[1] = (FX_CHAR)*pSrc++; |
| srcData[2] = (FX_CHAR)*pSrc++; |
| srcData[3] = (FX_CHAR)*pSrc++; |
| iSrcLen -= 4; |
| } else { |
| *((uint32_t*)&dstData) = 0; |
| *((uint32_t*)srcData) = 0; |
| srcData[0] = (FX_CHAR)*pSrc++; |
| if (iSrcLen > 1) { |
| srcData[1] = (FX_CHAR)*pSrc++; |
| } |
| if (iSrcLen > 2) { |
| srcData[2] = (FX_CHAR)*pSrc++; |
| } |
| iChars = iSrcLen; |
| iSrcLen = 0; |
| } |
| FX_Base64DecodePiece(srcData, iChars, dstData, iBytes); |
| *pDstEnd++ = ((uint8_t*)&dstData)[0]; |
| if (iBytes > 1) { |
| *pDstEnd++ = ((uint8_t*)&dstData)[1]; |
| } |
| if (iBytes > 2) { |
| *pDstEnd++ = ((uint8_t*)&dstData)[2]; |
| } |
| } |
| return pDstEnd - pDst; |
| } |
| |
| static const uint8_t g_FXHex2DecMap[256] = { |
| 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, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, |
| 0, 0, 0, 0, 0, 10, 11, 12, 13, 14, 15, 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, 10, 11, 12, |
| 13, 14, 15, 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, 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, |
| }; |
| uint8_t FX_Hex2Dec(uint8_t hexHigh, uint8_t hexLow) { |
| return (g_FXHex2DecMap[hexHigh] << 4) + g_FXHex2DecMap[hexLow]; |
| } |
| int32_t FX_SeparateStringW(const FX_WCHAR* pStr, |
| int32_t iStrLen, |
| FX_WCHAR delimiter, |
| CFX_WideStringArray& pieces) { |
| if (pStr == NULL) { |
| return 0; |
| } |
| if (iStrLen < 0) { |
| iStrLen = FXSYS_wcslen(pStr); |
| } |
| const FX_WCHAR* pToken = pStr; |
| const FX_WCHAR* pEnd = pStr + iStrLen; |
| while (TRUE) { |
| if (pStr >= pEnd || delimiter == *pStr) { |
| CFX_WideString sub(pToken, pStr - pToken); |
| pieces.Add(sub); |
| pToken = pStr + 1; |
| if (pStr >= pEnd) { |
| break; |
| } |
| } |
| pStr++; |
| } |
| return pieces.GetSize(); |
| } |
| #ifdef __cplusplus |
| } |
| #endif |
