Move xfa/src up to xfa/.

xfa/src/fxfa/app/xfa_checksum.cpp

-// 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/src/fxfa/app/xfa_checksum.h"
-
-#include "core/include/fdrm/fx_crypt.h"
-#include "xfa/src/fgas/crt/fgas_algorithm.h"
-
-CXFA_SAXReaderHandler::CXFA_SAXReaderHandler(CXFA_ChecksumContext* pContext)
-    : m_pContext(pContext) {
-  FXSYS_assert(m_pContext);
-}
-CXFA_SAXReaderHandler::~CXFA_SAXReaderHandler() {}
-void* CXFA_SAXReaderHandler::OnTagEnter(const CFX_ByteStringC& bsTagName,
-                                        FX_SAXNODE eType,
-                                        FX_DWORD dwStartPos) {
-  UpdateChecksum(TRUE);
-  if (eType != FX_SAXNODE_Tag && eType != FX_SAXNODE_Instruction) {
-    return NULL;
-  }
-  m_SAXContext.m_eNode = eType;
-  CFX_ByteTextBuf& textBuf = m_SAXContext.m_TextBuf;
-  textBuf << "<";
-  if (eType == FX_SAXNODE_Instruction) {
-    textBuf << "?";
-  }
-  textBuf << bsTagName;
-  m_SAXContext.m_bsTagName = bsTagName;
-  return &m_SAXContext;
-}
-void CXFA_SAXReaderHandler::OnTagAttribute(void* pTag,
-                                           const CFX_ByteStringC& bsAttri,
-                                           const CFX_ByteStringC& bsValue) {
-  if (pTag == NULL) {
-    return;
-  }
-  CFX_ByteTextBuf& textBuf = ((CXFA_SAXContext*)pTag)->m_TextBuf;
-  textBuf << " " << bsAttri << "=\"" << bsValue << "\"";
-}
-void CXFA_SAXReaderHandler::OnTagBreak(void* pTag) {
-  if (pTag == NULL) {
-    return;
-  }
-  CFX_ByteTextBuf& textBuf = ((CXFA_SAXContext*)pTag)->m_TextBuf;
-  textBuf << ">";
-  UpdateChecksum(FALSE);
-}
-void CXFA_SAXReaderHandler::OnTagData(void* pTag,
-                                      FX_SAXNODE eType,
-                                      const CFX_ByteStringC& bsData,
-                                      FX_DWORD dwStartPos) {
-  if (pTag == NULL) {
-    return;
-  }
-  CFX_ByteTextBuf& textBuf = ((CXFA_SAXContext*)pTag)->m_TextBuf;
-  if (eType == FX_SAXNODE_CharData) {
-    textBuf << "<![CDATA[";
-  }
-  textBuf << bsData;
-  if (eType == FX_SAXNODE_CharData) {
-    textBuf << "]]>";
-  }
-}
-void CXFA_SAXReaderHandler::OnTagClose(void* pTag, FX_DWORD dwEndPos) {
-  if (pTag == NULL) {
-    return;
-  }
-  CXFA_SAXContext* pSAXContext = (CXFA_SAXContext*)pTag;
-  CFX_ByteTextBuf& textBuf = pSAXContext->m_TextBuf;
-  if (pSAXContext->m_eNode == FX_SAXNODE_Instruction) {
-    textBuf << "?>";
-  } else if (pSAXContext->m_eNode == FX_SAXNODE_Tag) {
-    textBuf << "></" << pSAXContext->m_bsTagName << ">";
-  }
-  UpdateChecksum(FALSE);
-}
-void CXFA_SAXReaderHandler::OnTagEnd(void* pTag,
-                                     const CFX_ByteStringC& bsTagName,
-                                     FX_DWORD dwEndPos) {
-  if (pTag == NULL) {
-    return;
-  }
-  CFX_ByteTextBuf& textBuf = ((CXFA_SAXContext*)pTag)->m_TextBuf;
-  textBuf << "</" << bsTagName << ">";
-  UpdateChecksum(FALSE);
-}
-void CXFA_SAXReaderHandler::OnTargetData(void* pTag,
-                                         FX_SAXNODE eType,
-                                         const CFX_ByteStringC& bsData,
-                                         FX_DWORD dwStartPos) {
-  if (pTag == NULL && eType != FX_SAXNODE_Comment) {
-    return;
-  }
-  if (eType == FX_SAXNODE_Comment) {
-    CFX_ByteTextBuf& textBuf = m_SAXContext.m_TextBuf;
-    textBuf << "<!--" << bsData << "-->";
-    UpdateChecksum(FALSE);
-  } else {
-    CFX_ByteTextBuf& textBuf = ((CXFA_SAXContext*)pTag)->m_TextBuf;
-    textBuf << " " << bsData;
-  }
-}
-void CXFA_SAXReaderHandler::UpdateChecksum(FX_BOOL bCheckSpace) {
-  int32_t iLength = m_SAXContext.m_TextBuf.GetLength();
-  if (iLength < 1) {
-    return;
-  }
-  uint8_t* pBuffer = m_SAXContext.m_TextBuf.GetBuffer();
-  FX_BOOL bUpdata = TRUE;
-  if (bCheckSpace) {
-    bUpdata = FALSE;
-    for (int32_t i = 0; i < iLength; i++) {
-      bUpdata = (pBuffer[i] > 0x20);
-      if (bUpdata) {
-        break;
-      }
-    }
-  }
-  if (bUpdata) {
-    m_pContext->Update(CFX_ByteStringC(pBuffer, iLength));
-  }
-  m_SAXContext.m_TextBuf.Clear();
-}
-IXFA_ChecksumContext* XFA_Checksum_Create() {
-  return new CXFA_ChecksumContext;
-}
-CXFA_ChecksumContext::CXFA_ChecksumContext()
-    : m_pSAXReader(NULL), m_pByteContext(NULL) {}
-CXFA_ChecksumContext::~CXFA_ChecksumContext() {
-  FinishChecksum();
-}
-FX_BOOL CXFA_ChecksumContext::StartChecksum() {
-  FinishChecksum();
-  m_pByteContext = FX_Alloc(uint8_t, 128);
-  CRYPT_SHA1Start(m_pByteContext);
-  m_bsChecksum.Empty();
-  m_pSAXReader = FX_SAXReader_Create();
-  return m_pSAXReader != NULL;
-}
-FX_BOOL CXFA_ChecksumContext::UpdateChecksum(IFX_FileRead* pSrcFile,
-                                             FX_FILESIZE offset,
-                                             size_t size) {
-  if (m_pSAXReader == NULL) {
-    return FALSE;
-  }
-  if (pSrcFile == NULL) {
-    return FALSE;
-  }
-  if (size < 1) {
-    size = pSrcFile->GetSize();
-  }
-  CXFA_SAXReaderHandler handler(this);
-  m_pSAXReader->SetHandler(&handler);
-  if (m_pSAXReader->StartParse(
-          pSrcFile, (FX_DWORD)offset, (FX_DWORD)size,
-          FX_SAXPARSEMODE_NotSkipSpace | FX_SAXPARSEMODE_NotConvert_amp |
-              FX_SAXPARSEMODE_NotConvert_lt | FX_SAXPARSEMODE_NotConvert_gt |
-              FX_SAXPARSEMODE_NotConvert_sharp) < 0) {
-    return FALSE;
-  }
-  return m_pSAXReader->ContinueParse(NULL) > 99;
-}
-void CXFA_ChecksumContext::FinishChecksum() {
-  if (m_pSAXReader) {
-    m_pSAXReader->Release();
-    m_pSAXReader = NULL;
-  }
-  if (m_pByteContext) {
-    uint8_t digest[20];
-    FXSYS_memset(digest, 0, 20);
-    CRYPT_SHA1Finish(m_pByteContext, digest);
-    int32_t nLen = FX_Base64EncodeA(digest, 20, NULL);
-    FX_CHAR* pBuffer = m_bsChecksum.GetBuffer(nLen);
-    FX_Base64EncodeA(digest, 20, pBuffer);
-    m_bsChecksum.ReleaseBuffer(nLen);
-    FX_Free(m_pByteContext);
-    m_pByteContext = NULL;
-  }
-}
-void CXFA_ChecksumContext::GetChecksum(CFX_ByteString& bsChecksum) {
-  bsChecksum = m_bsChecksum;
-}
-void CXFA_ChecksumContext::Update(const CFX_ByteStringC& bsText) {
-  if (m_pByteContext) {
-    CRYPT_SHA1Update(m_pByteContext, bsText.GetPtr(), bsText.GetLength());
-  }
-}