Index: xfa/fxfa/app/xfa_checksum.cpp |
diff --git a/xfa/fxfa/app/xfa_checksum.cpp b/xfa/fxfa/app/xfa_checksum.cpp |
index fab14c9b1743000c3652400308fd550a429eea40..b5d9fdeb7d926466d1e10ad84884b31ced456235 100644 |
--- a/xfa/fxfa/app/xfa_checksum.cpp |
+++ b/xfa/fxfa/app/xfa_checksum.cpp |
@@ -7,7 +7,89 @@ |
#include "xfa/fxfa/include/xfa_checksum.h" |
#include "core/fdrm/crypto/include/fx_crypt.h" |
-#include "xfa/fgas/crt/fgas_algorithm.h" |
+ |
+namespace { |
+ |
+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; |
+}; |
+ |
+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', '+', '/', |
+}; |
+ |
+void 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 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; |
+ } |
+ Base64EncodePiece(srcData, iBytes, pDstEnd); |
+ pDstEnd += 4; |
+ } |
+ return pDstEnd - pDst; |
+} |
+ |
+} // namespace |
CXFA_SAXReaderHandler::CXFA_SAXReaderHandler(CXFA_ChecksumContext* pContext) |
: m_pContext(pContext) { |
@@ -167,9 +249,9 @@ void CXFA_ChecksumContext::FinishChecksum() { |
uint8_t digest[20]; |
FXSYS_memset(digest, 0, 20); |
CRYPT_SHA1Finish(m_pByteContext, digest); |
- int32_t nLen = FX_Base64EncodeA(digest, 20, NULL); |
+ int32_t nLen = Base64EncodeA(digest, 20, NULL); |
FX_CHAR* pBuffer = m_bsChecksum.GetBuffer(nLen); |
- FX_Base64EncodeA(digest, 20, pBuffer); |
+ Base64EncodeA(digest, 20, pBuffer); |
m_bsChecksum.ReleaseBuffer(nLen); |
FX_Free(m_pByteContext); |
m_pByteContext = NULL; |