Move fpdfsdk/javascript to fxjs/

This CL moves all of the CJS files into fxjs. The :javascript build rule
is removed and :fxjs is used instead.

Change-Id: I1701b308f51317d0346c7401b43812c3f43a27bf
Reviewed-on: https://pdfium-review.googlesource.com/17047
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>

1 files changed, 397 insertions, 0 deletions

diff --git a/fxjs/JS_GlobalData.cpp b/fxjs/JS_GlobalData.cpp
new file mode 100644
index 0000000000..78e19c9482
--- /dev/null
+++ b/fxjs/JS_GlobalData.cpp
@@ -0,0 +1,397 @@
+// 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 "fxjs/JS_GlobalData.h"
+
+#include <utility>
+
+#include "core/fdrm/crypto/fx_crypt.h"
+#include "third_party/base/ptr_util.h"
+#include "third_party/base/stl_util.h"
+
+#define JS_MAXGLOBALDATA (1024 * 4 - 8)
+
+#define READER_JS_GLOBALDATA_FILENAME L"Reader_JsGlobal.Data"
+#define PHANTOM_JS_GLOBALDATA_FILENAME L"Phantom_JsGlobal.Data"
+#define SDK_JS_GLOBALDATA_FILENAME L"SDK_JsGlobal.Data"
+
+namespace {
+
+const uint8_t JS_RC4KEY[] = {
+    0x19, 0xa8, 0xe8, 0x01, 0xf6, 0xa8, 0xb6, 0x4d, 0x82, 0x04, 0x45, 0x6d,
+    0xb4, 0xcf, 0xd7, 0x77, 0x67, 0xf9, 0x75, 0x9f, 0xf0, 0xe0, 0x1e, 0x51,
+    0xee, 0x46, 0xfd, 0x0b, 0xc9, 0x93, 0x25, 0x55, 0x4a, 0xee, 0xe0, 0x16,
+    0xd0, 0xdf, 0x8c, 0xfa, 0x2a, 0xa9, 0x49, 0xfd, 0x97, 0x1c, 0x0e, 0x22,
+    0x13, 0x28, 0x7c, 0xaf, 0xc4, 0xfc, 0x9c, 0x12, 0x65, 0x8c, 0x4e, 0x5b,
+    0x04, 0x75, 0x89, 0xc9, 0xb1, 0xed, 0x50, 0xca, 0x96, 0x6f, 0x1a, 0x7a,
+    0xfe, 0x58, 0x5d, 0xec, 0x19, 0x4a, 0xf6, 0x35, 0x6a, 0x97, 0x14, 0x00,
+    0x0e, 0xd0, 0x6b, 0xbb, 0xd5, 0x75, 0x55, 0x8b, 0x6e, 0x6b, 0x19, 0xa0,
+    0xf8, 0x77, 0xd5, 0xa3};
+
+// Returns true if non-empty, setting sPropName
+bool TrimPropName(ByteString* sPropName) {
+  sPropName->TrimLeft();
+  sPropName->TrimRight();
+  return sPropName->GetLength() != 0;
+}
+
+CJS_GlobalData* g_pInstance = nullptr;
+
+}  // namespace
+
+// static
+CJS_GlobalData* CJS_GlobalData::GetRetainedInstance(
+    CPDFSDK_FormFillEnvironment* pApp) {
+  if (!g_pInstance) {
+    g_pInstance = new CJS_GlobalData();
+  }
+  ++g_pInstance->m_RefCount;
+  return g_pInstance;
+}
+
+void CJS_GlobalData::Release() {
+  if (!--m_RefCount) {
+    delete g_pInstance;
+    g_pInstance = nullptr;
+  }
+}
+
+CJS_GlobalData::CJS_GlobalData()
+    : m_RefCount(0), m_sFilePath(SDK_JS_GLOBALDATA_FILENAME) {
+  LoadGlobalPersistentVariables();
+}
+
+CJS_GlobalData::~CJS_GlobalData() {
+  SaveGlobalPersisitentVariables();
+}
+
+CJS_GlobalData::iterator CJS_GlobalData::FindGlobalVariable(
+    const ByteString& propname) {
+  for (auto it = m_arrayGlobalData.begin(); it != m_arrayGlobalData.end();
+       ++it) {
+    if ((*it)->data.sKey == propname)
+      return it;
+  }
+  return m_arrayGlobalData.end();
+}
+
+CJS_GlobalData::const_iterator CJS_GlobalData::FindGlobalVariable(
+    const ByteString& propname) const {
+  for (auto it = m_arrayGlobalData.begin(); it != m_arrayGlobalData.end();
+       ++it) {
+    if ((*it)->data.sKey == propname)
+      return it;
+  }
+  return m_arrayGlobalData.end();
+}
+
+CJS_GlobalData_Element* CJS_GlobalData::GetGlobalVariable(
+    const ByteString& propname) {
+  auto iter = FindGlobalVariable(propname);
+  return iter != m_arrayGlobalData.end() ? iter->get() : nullptr;
+}
+
+void CJS_GlobalData::SetGlobalVariableNumber(const ByteString& propname,
+                                             double dData) {
+  ByteString sPropName(propname);
+  if (!TrimPropName(&sPropName))
+    return;
+
+  if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) {
+    pData->data.nType = JS_GlobalDataType::NUMBER;
+    pData->data.dData = dData;
+    return;
+  }
+  auto pNewData = pdfium::MakeUnique<CJS_GlobalData_Element>();
+  pNewData->data.sKey = sPropName;
+  pNewData->data.nType = JS_GlobalDataType::NUMBER;
+  pNewData->data.dData = dData;
+  m_arrayGlobalData.push_back(std::move(pNewData));
+}
+
+void CJS_GlobalData::SetGlobalVariableBoolean(const ByteString& propname,
+                                              bool bData) {
+  ByteString sPropName(propname);
+  if (!TrimPropName(&sPropName))
+    return;
+
+  if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) {
+    pData->data.nType = JS_GlobalDataType::BOOLEAN;
+    pData->data.bData = bData;
+    return;
+  }
+  auto pNewData = pdfium::MakeUnique<CJS_GlobalData_Element>();
+  pNewData->data.sKey = sPropName;
+  pNewData->data.nType = JS_GlobalDataType::BOOLEAN;
+  pNewData->data.bData = bData;
+  m_arrayGlobalData.push_back(std::move(pNewData));
+}
+
+void CJS_GlobalData::SetGlobalVariableString(const ByteString& propname,
+                                             const ByteString& sData) {
+  ByteString sPropName(propname);
+  if (!TrimPropName(&sPropName))
+    return;
+
+  if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) {
+    pData->data.nType = JS_GlobalDataType::STRING;
+    pData->data.sData = sData;
+    return;
+  }
+  auto pNewData = pdfium::MakeUnique<CJS_GlobalData_Element>();
+  pNewData->data.sKey = sPropName;
+  pNewData->data.nType = JS_GlobalDataType::STRING;
+  pNewData->data.sData = sData;
+  m_arrayGlobalData.push_back(std::move(pNewData));
+}
+
+void CJS_GlobalData::SetGlobalVariableObject(
+    const ByteString& propname,
+    const CJS_GlobalVariableArray& array) {
+  ByteString sPropName(propname);
+  if (!TrimPropName(&sPropName))
+    return;
+
+  if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) {
+    pData->data.nType = JS_GlobalDataType::OBJECT;
+    pData->data.objData.Copy(array);
+    return;
+  }
+  auto pNewData = pdfium::MakeUnique<CJS_GlobalData_Element>();
+  pNewData->data.sKey = sPropName;
+  pNewData->data.nType = JS_GlobalDataType::OBJECT;
+  pNewData->data.objData.Copy(array);
+  m_arrayGlobalData.push_back(std::move(pNewData));
+}
+
+void CJS_GlobalData::SetGlobalVariableNull(const ByteString& propname) {
+  ByteString sPropName(propname);
+  if (!TrimPropName(&sPropName))
+    return;
+
+  if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) {
+    pData->data.nType = JS_GlobalDataType::NULLOBJ;
+    return;
+  }
+  auto pNewData = pdfium::MakeUnique<CJS_GlobalData_Element>();
+  pNewData->data.sKey = sPropName;
+  pNewData->data.nType = JS_GlobalDataType::NULLOBJ;
+  m_arrayGlobalData.push_back(std::move(pNewData));
+}
+
+bool CJS_GlobalData::SetGlobalVariablePersistent(const ByteString& propname,
+                                                 bool bPersistent) {
+  ByteString sPropName(propname);
+  if (!TrimPropName(&sPropName))
+    return false;
+
+  CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName);
+  if (!pData)
+    return false;
+
+  pData->bPersistent = bPersistent;
+  return true;
+}
+
+bool CJS_GlobalData::DeleteGlobalVariable(const ByteString& propname) {
+  ByteString sPropName(propname);
+  if (!TrimPropName(&sPropName))
+    return false;
+
+  auto iter = FindGlobalVariable(sPropName);
+  if (iter == m_arrayGlobalData.end())
+    return false;
+
+  m_arrayGlobalData.erase(iter);
+  return true;
+}
+
+int32_t CJS_GlobalData::GetSize() const {
+  return pdfium::CollectionSize<int32_t>(m_arrayGlobalData);
+}
+
+CJS_GlobalData_Element* CJS_GlobalData::GetAt(int index) const {
+  if (index < 0 || index >= GetSize())
+    return nullptr;
+  return m_arrayGlobalData[index].get();
+}
+
+void CJS_GlobalData::LoadGlobalPersistentVariables() {
+  uint8_t* pBuffer = nullptr;
+  int32_t nLength = 0;
+
+  LoadFileBuffer(m_sFilePath.c_str(), pBuffer, nLength);
+  CRYPT_ArcFourCryptBlock(pBuffer, nLength, JS_RC4KEY, sizeof(JS_RC4KEY));
+
+  if (pBuffer) {
+    uint8_t* p = pBuffer;
+    uint16_t wType = *((uint16_t*)p);
+    p += sizeof(uint16_t);
+
+    if (wType == (uint16_t)(('X' << 8) | 'F')) {
+      uint16_t wVersion = *((uint16_t*)p);
+      p += sizeof(uint16_t);
+
+      ASSERT(wVersion <= 2);
+
+      uint32_t dwCount = *((uint32_t*)p);
+      p += sizeof(uint32_t);
+
+      uint32_t dwSize = *((uint32_t*)p);
+      p += sizeof(uint32_t);
+
+      if (dwSize == nLength - sizeof(uint16_t) * 2 - sizeof(uint32_t) * 2) {
+        for (int32_t i = 0, sz = dwCount; i < sz; i++) {
+          if (p > pBuffer + nLength)
+            break;
+
+          uint32_t dwNameLen = *((uint32_t*)p);
+          p += sizeof(uint32_t);
+
+          if (p + dwNameLen > pBuffer + nLength)
+            break;
+
+          ByteString sEntry = ByteString(p, dwNameLen);
+          p += sizeof(char) * dwNameLen;
+
+          JS_GlobalDataType wDataType =
+              static_cast<JS_GlobalDataType>(*((uint16_t*)p));
+          p += sizeof(uint16_t);
+
+          switch (wDataType) {
+            case JS_GlobalDataType::NUMBER: {
+              double dData = 0;
+              switch (wVersion) {
+                case 1: {
+                  uint32_t dwData = *((uint32_t*)p);
+                  p += sizeof(uint32_t);
+                  dData = dwData;
+                } break;
+                case 2: {
+                  dData = *((double*)p);
+                  p += sizeof(double);
+                } break;
+              }
+              SetGlobalVariableNumber(sEntry, dData);
+              SetGlobalVariablePersistent(sEntry, true);
+            } break;
+            case JS_GlobalDataType::BOOLEAN: {
+              uint16_t wData = *((uint16_t*)p);
+              p += sizeof(uint16_t);
+              SetGlobalVariableBoolean(sEntry, (bool)(wData == 1));
+              SetGlobalVariablePersistent(sEntry, true);
+            } break;
+            case JS_GlobalDataType::STRING: {
+              uint32_t dwLength = *((uint32_t*)p);
+              p += sizeof(uint32_t);
+
+              if (p + dwLength > pBuffer + nLength)
+                break;
+
+              SetGlobalVariableString(sEntry, ByteString(p, dwLength));
+              SetGlobalVariablePersistent(sEntry, true);
+              p += sizeof(char) * dwLength;
+            } break;
+            case JS_GlobalDataType::NULLOBJ: {
+              SetGlobalVariableNull(sEntry);
+              SetGlobalVariablePersistent(sEntry, true);
+            }
+            case JS_GlobalDataType::OBJECT:
+              break;
+          }
+        }
+      }
+    }
+    FX_Free(pBuffer);
+  }
+}
+
+void CJS_GlobalData::SaveGlobalPersisitentVariables() {
+  uint32_t nCount = 0;
+  CFX_BinaryBuf sData;
+  for (const auto& pElement : m_arrayGlobalData) {
+    if (pElement->bPersistent) {
+      CFX_BinaryBuf sElement;
+      MakeByteString(pElement->data.sKey, &pElement->data, sElement);
+      if (sData.GetSize() + sElement.GetSize() > JS_MAXGLOBALDATA)
+        break;
+
+      sData.AppendBlock(sElement.GetBuffer(), sElement.GetSize());
+      nCount++;
+    }
+  }
+
+  CFX_BinaryBuf sFile;
+  uint16_t wType = (uint16_t)(('X' << 8) | 'F');
+  sFile.AppendBlock(&wType, sizeof(uint16_t));
+  uint16_t wVersion = 2;
+  sFile.AppendBlock(&wVersion, sizeof(uint16_t));
+  sFile.AppendBlock(&nCount, sizeof(uint32_t));
+  uint32_t dwSize = sData.GetSize();
+  sFile.AppendBlock(&dwSize, sizeof(uint32_t));
+
+  sFile.AppendBlock(sData.GetBuffer(), sData.GetSize());
+
+  CRYPT_ArcFourCryptBlock(sFile.GetBuffer(), sFile.GetSize(), JS_RC4KEY,
+                          sizeof(JS_RC4KEY));
+  WriteFileBuffer(m_sFilePath.c_str(), (const char*)sFile.GetBuffer(),
+                  sFile.GetSize());
+}
+
+void CJS_GlobalData::LoadFileBuffer(const wchar_t* sFilePath,
+                                    uint8_t*& pBuffer,
+                                    int32_t& nLength) {
+  // UnSupport.
+}
+
+void CJS_GlobalData::WriteFileBuffer(const wchar_t* sFilePath,
+                                     const char* pBuffer,
+                                     int32_t nLength) {
+  // UnSupport.
+}
+
+void CJS_GlobalData::MakeByteString(const ByteString& name,
+                                    CJS_KeyValue* pData,
+                                    CFX_BinaryBuf& sData) {
+  switch (pData->nType) {
+    case JS_GlobalDataType::NUMBER: {
+      uint32_t dwNameLen = (uint32_t)name.GetLength();
+      sData.AppendBlock(&dwNameLen, sizeof(uint32_t));
+      sData.AppendString(name);
+      sData.AppendBlock(&pData->nType, sizeof(uint16_t));
+
+      double dData = pData->dData;
+      sData.AppendBlock(&dData, sizeof(double));
+    } break;
+    case JS_GlobalDataType::BOOLEAN: {
+      uint32_t dwNameLen = (uint32_t)name.GetLength();
+      sData.AppendBlock(&dwNameLen, sizeof(uint32_t));
+      sData.AppendString(name);
+      sData.AppendBlock(&pData->nType, sizeof(uint16_t));
+
+      uint16_t wData = (uint16_t)pData->bData;
+      sData.AppendBlock(&wData, sizeof(uint16_t));
+    } break;
+    case JS_GlobalDataType::STRING: {
+      uint32_t dwNameLen = (uint32_t)name.GetLength();
+      sData.AppendBlock(&dwNameLen, sizeof(uint32_t));
+      sData.AppendString(name);
+      sData.AppendBlock(&pData->nType, sizeof(uint16_t));
+
+      uint32_t dwDataLen = (uint32_t)pData->sData.GetLength();
+      sData.AppendBlock(&dwDataLen, sizeof(uint32_t));
+      sData.AppendString(pData->sData);
+    } break;
+    case JS_GlobalDataType::NULLOBJ: {
+      uint32_t dwNameLen = (uint32_t)name.GetLength();
+      sData.AppendBlock(&dwNameLen, sizeof(uint32_t));
+      sData.AppendString(name);
+      sData.AppendBlock(&pData->nType, sizeof(uint32_t));
+    } break;
+    default:
+      break;
+  }
+}