1 files changed, 0 insertions, 151 deletions
diff --git a/xfa/fxfa/cxfa_checksumcontext.cpp b/xfa/fxfa/cxfa_checksumcontext.cpp
deleted file mode 100644
index a59bdb16bf..0000000000
--- a/xfa/fxfa/cxfa_checksumcontext.cpp
+++ /dev/null
@@ -1,151 +0,0 @@
-// 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/fxfa/cxfa_checksumcontext.h"
-
-#include "core/fdrm/crypto/fx_crypt.h"
-#include "third_party/base/ptr_util.h"
-#include "xfa/fxfa/cxfa_saxreaderhandler.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 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, 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, char* pDst) {
-  ASSERT(pSrc);
-  if (iSrcLen < 1) {
-    return 0;
-  }
-  if (!pDst) {
-    int32_t iDstLen = iSrcLen / 3 * 4;
-    if ((iSrcLen % 3) != 0) {
-      iDstLen += 4;
-    }
-    return iDstLen;
-  }
-  FX_BASE64DATA srcData;
-  int32_t iBytes = 3;
-  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_ChecksumContext::CXFA_ChecksumContext() {}
-
-CXFA_ChecksumContext::~CXFA_ChecksumContext() {}
-
-void CXFA_ChecksumContext::StartChecksum() {
-  FinishChecksum();
-  m_pByteContext = pdfium::MakeUnique<CRYPT_sha1_context>();
-  CRYPT_SHA1Start(m_pByteContext.get());
-  m_bsChecksum.clear();
-  m_pSAXReader = pdfium::MakeUnique<CFX_SAXReader>();
-}
-
-bool CXFA_ChecksumContext::UpdateChecksum(
-    const CFX_RetainPtr<IFX_SeekableReadStream>& pSrcFile,
-    FX_FILESIZE offset,
-    size_t size) {
-  if (!m_pSAXReader || !pSrcFile)
-    return false;
-
-  if (size < 1)
-    size = pSrcFile->GetSize();
-
-  CXFA_SAXReaderHandler handler(this);
-  m_pSAXReader->SetHandler(&handler);
-  if (m_pSAXReader->StartParse(
-          pSrcFile, (uint32_t)offset, (uint32_t)size,
-          CFX_SaxParseMode_NotSkipSpace | CFX_SaxParseMode_NotConvert_amp |
-              CFX_SaxParseMode_NotConvert_lt | CFX_SaxParseMode_NotConvert_gt |
-              CFX_SaxParseMode_NotConvert_sharp) < 0) {
-    return false;
-  }
-  return m_pSAXReader->ContinueParse(nullptr) > 99;
-}
-
-void CXFA_ChecksumContext::FinishChecksum() {
-  m_pSAXReader.reset();
-  if (m_pByteContext) {
-    uint8_t digest[20];
-    FXSYS_memset(digest, 0, 20);
-    CRYPT_SHA1Finish(m_pByteContext.get(), digest);
-    int32_t nLen = Base64EncodeA(digest, 20, nullptr);
-    char* pBuffer = m_bsChecksum.GetBuffer(nLen);
-    Base64EncodeA(digest, 20, pBuffer);
-    m_bsChecksum.ReleaseBuffer(nLen);
-    m_pByteContext.reset();
-  }
-}
-
-CFX_ByteString CXFA_ChecksumContext::GetChecksum() const {
-  return m_bsChecksum;
-}
-
-void CXFA_ChecksumContext::Update(const CFX_ByteStringC& bsText) {
-  if (!m_pByteContext)
-    return;
-
-  CRYPT_SHA1Update(m_pByteContext.get(), bsText.raw_str(), bsText.GetLength());
-}