| // 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 "JS_GlobalData.h" |
| |
| #include "core/include/fdrm/fx_crypt.h" |
| #include "fpdfsdk/include/javascript/IJavaScript.h" |
| |
| #define JS_MAXGLOBALDATA (1024 * 4 - 8) |
| |
| /* --------------------- CJS_GlobalVariableArray --------------------- */ |
| |
| CJS_GlobalVariableArray::CJS_GlobalVariableArray() {} |
| |
| CJS_GlobalVariableArray::~CJS_GlobalVariableArray() { |
| Empty(); |
| } |
| |
| void CJS_GlobalVariableArray::Copy(const CJS_GlobalVariableArray& array) { |
| Empty(); |
| for (int i = 0, sz = array.Count(); i < sz; i++) { |
| CJS_KeyValue* pOldObjData = array.GetAt(i); |
| switch (pOldObjData->nType) { |
| case JS_GLOBALDATA_TYPE_NUMBER: { |
| CJS_KeyValue* pNewObjData = new CJS_KeyValue; |
| pNewObjData->sKey = pOldObjData->sKey; |
| pNewObjData->nType = pOldObjData->nType; |
| pNewObjData->dData = pOldObjData->dData; |
| Add(pNewObjData); |
| } break; |
| case JS_GLOBALDATA_TYPE_BOOLEAN: { |
| CJS_KeyValue* pNewObjData = new CJS_KeyValue; |
| pNewObjData->sKey = pOldObjData->sKey; |
| pNewObjData->nType = pOldObjData->nType; |
| pNewObjData->bData = pOldObjData->bData; |
| Add(pNewObjData); |
| } break; |
| case JS_GLOBALDATA_TYPE_STRING: { |
| CJS_KeyValue* pNewObjData = new CJS_KeyValue; |
| pNewObjData->sKey = pOldObjData->sKey; |
| pNewObjData->nType = pOldObjData->nType; |
| pNewObjData->sData = pOldObjData->sData; |
| Add(pNewObjData); |
| } break; |
| case JS_GLOBALDATA_TYPE_OBJECT: { |
| CJS_KeyValue* pNewObjData = new CJS_KeyValue; |
| pNewObjData->sKey = pOldObjData->sKey; |
| pNewObjData->nType = pOldObjData->nType; |
| pNewObjData->objData.Copy(pOldObjData->objData); |
| Add(pNewObjData); |
| } break; |
| case JS_GLOBALDATA_TYPE_NULL: { |
| CJS_KeyValue* pNewObjData = new CJS_KeyValue; |
| pNewObjData->sKey = pOldObjData->sKey; |
| pNewObjData->nType = pOldObjData->nType; |
| Add(pNewObjData); |
| } break; |
| } |
| } |
| } |
| |
| void CJS_GlobalVariableArray::Add(CJS_KeyValue* p) { |
| array.Add(p); |
| } |
| |
| int CJS_GlobalVariableArray::Count() const { |
| return array.GetSize(); |
| } |
| |
| CJS_KeyValue* CJS_GlobalVariableArray::GetAt(int index) const { |
| return array.GetAt(index); |
| } |
| |
| void CJS_GlobalVariableArray::Empty() { |
| for (int i = 0, sz = array.GetSize(); i < sz; i++) |
| delete array.GetAt(i); |
| array.RemoveAll(); |
| } |
| |
| /* -------------------------- CJS_GlobalData -------------------------- */ |
| |
| #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" |
| |
| static 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}; |
| |
| CJS_GlobalData* CJS_GlobalData::g_Instance = nullptr; |
| |
| // static |
| CJS_GlobalData* CJS_GlobalData::GetRetainedInstance(CPDFDoc_Environment* pApp) { |
| if (!g_Instance) { |
| g_Instance = new CJS_GlobalData(); |
| } |
| ++g_Instance->m_RefCount; |
| return g_Instance; |
| } |
| |
| void CJS_GlobalData::Release() { |
| if (!--m_RefCount) { |
| delete g_Instance; |
| g_Instance = nullptr; |
| } |
| } |
| |
| CJS_GlobalData::CJS_GlobalData() : m_RefCount(0) { |
| m_sFilePath += SDK_JS_GLOBALDATA_FILENAME; |
| LoadGlobalPersistentVariables(); |
| } |
| |
| CJS_GlobalData::~CJS_GlobalData() { |
| SaveGlobalPersisitentVariables(); |
| for (int i = 0, sz = m_arrayGlobalData.GetSize(); i < sz; i++) |
| delete m_arrayGlobalData.GetAt(i); |
| |
| m_arrayGlobalData.RemoveAll(); |
| } |
| |
| int CJS_GlobalData::FindGlobalVariable(const FX_CHAR* propname) { |
| for (int i = 0, sz = m_arrayGlobalData.GetSize(); i < sz; i++) { |
| CJS_GlobalData_Element* pTemp = m_arrayGlobalData.GetAt(i); |
| if (pTemp->data.sKey[0] == *propname && pTemp->data.sKey == propname) |
| return i; |
| } |
| return -1; |
| } |
| |
| CJS_GlobalData_Element* CJS_GlobalData::GetGlobalVariable( |
| const FX_CHAR* propname) { |
| ASSERT(propname); |
| |
| int nFind = FindGlobalVariable(propname); |
| return nFind >= 0 ? m_arrayGlobalData.GetAt(nFind) : nullptr; |
| } |
| |
| void CJS_GlobalData::SetGlobalVariableNumber(const FX_CHAR* propname, |
| double dData) { |
| ASSERT(propname); |
| CFX_ByteString sPropName = propname; |
| sPropName.TrimLeft(); |
| sPropName.TrimRight(); |
| if (sPropName.GetLength() == 0) |
| return; |
| |
| if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) { |
| pData->data.nType = JS_GLOBALDATA_TYPE_NUMBER; |
| pData->data.dData = dData; |
| } else { |
| CJS_GlobalData_Element* pNewData = new CJS_GlobalData_Element; |
| pNewData->data.sKey = sPropName; |
| pNewData->data.nType = JS_GLOBALDATA_TYPE_NUMBER; |
| pNewData->data.dData = dData; |
| m_arrayGlobalData.Add(pNewData); |
| } |
| } |
| |
| void CJS_GlobalData::SetGlobalVariableBoolean(const FX_CHAR* propname, |
| bool bData) { |
| ASSERT(propname); |
| CFX_ByteString sPropName = propname; |
| |
| sPropName.TrimLeft(); |
| sPropName.TrimRight(); |
| |
| if (sPropName.GetLength() == 0) |
| return; |
| |
| if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) { |
| pData->data.nType = JS_GLOBALDATA_TYPE_BOOLEAN; |
| pData->data.bData = bData; |
| } else { |
| CJS_GlobalData_Element* pNewData = new CJS_GlobalData_Element; |
| pNewData->data.sKey = sPropName; |
| pNewData->data.nType = JS_GLOBALDATA_TYPE_BOOLEAN; |
| pNewData->data.bData = bData; |
| |
| m_arrayGlobalData.Add(pNewData); |
| } |
| } |
| |
| void CJS_GlobalData::SetGlobalVariableString(const FX_CHAR* propname, |
| const CFX_ByteString& sData) { |
| ASSERT(propname); |
| CFX_ByteString sPropName = propname; |
| |
| sPropName.TrimLeft(); |
| sPropName.TrimRight(); |
| |
| if (sPropName.GetLength() == 0) |
| return; |
| |
| if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) { |
| pData->data.nType = JS_GLOBALDATA_TYPE_STRING; |
| pData->data.sData = sData; |
| } else { |
| CJS_GlobalData_Element* pNewData = new CJS_GlobalData_Element; |
| pNewData->data.sKey = sPropName; |
| pNewData->data.nType = JS_GLOBALDATA_TYPE_STRING; |
| pNewData->data.sData = sData; |
| |
| m_arrayGlobalData.Add(pNewData); |
| } |
| } |
| |
| void CJS_GlobalData::SetGlobalVariableObject( |
| const FX_CHAR* propname, |
| const CJS_GlobalVariableArray& array) { |
| ASSERT(propname); |
| CFX_ByteString sPropName = propname; |
| |
| sPropName.TrimLeft(); |
| sPropName.TrimRight(); |
| |
| if (sPropName.GetLength() == 0) |
| return; |
| |
| if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) { |
| pData->data.nType = JS_GLOBALDATA_TYPE_OBJECT; |
| pData->data.objData.Copy(array); |
| } else { |
| CJS_GlobalData_Element* pNewData = new CJS_GlobalData_Element; |
| pNewData->data.sKey = sPropName; |
| pNewData->data.nType = JS_GLOBALDATA_TYPE_OBJECT; |
| pNewData->data.objData.Copy(array); |
| |
| m_arrayGlobalData.Add(pNewData); |
| } |
| } |
| |
| void CJS_GlobalData::SetGlobalVariableNull(const FX_CHAR* propname) { |
| ASSERT(propname); |
| CFX_ByteString sPropName = propname; |
| |
| sPropName.TrimLeft(); |
| sPropName.TrimRight(); |
| |
| if (sPropName.GetLength() == 0) |
| return; |
| |
| if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) { |
| pData->data.nType = JS_GLOBALDATA_TYPE_NULL; |
| } else { |
| CJS_GlobalData_Element* pNewData = new CJS_GlobalData_Element; |
| pNewData->data.sKey = sPropName; |
| pNewData->data.nType = JS_GLOBALDATA_TYPE_NULL; |
| |
| m_arrayGlobalData.Add(pNewData); |
| } |
| } |
| |
| FX_BOOL CJS_GlobalData::SetGlobalVariablePersistent(const FX_CHAR* propname, |
| FX_BOOL bPersistent) { |
| ASSERT(propname); |
| CFX_ByteString sPropName = propname; |
| |
| sPropName.TrimLeft(); |
| sPropName.TrimRight(); |
| |
| if (sPropName.GetLength() == 0) |
| return FALSE; |
| |
| if (CJS_GlobalData_Element* pData = GetGlobalVariable(sPropName)) { |
| pData->bPersistent = bPersistent; |
| return TRUE; |
| } |
| |
| return FALSE; |
| } |
| |
| FX_BOOL CJS_GlobalData::DeleteGlobalVariable(const FX_CHAR* propname) { |
| ASSERT(propname); |
| CFX_ByteString sPropName = propname; |
| |
| sPropName.TrimLeft(); |
| sPropName.TrimRight(); |
| |
| if (sPropName.GetLength() == 0) |
| return FALSE; |
| |
| int nFind = FindGlobalVariable(sPropName); |
| |
| if (nFind >= 0) { |
| delete m_arrayGlobalData.GetAt(nFind); |
| m_arrayGlobalData.RemoveAt(nFind); |
| return TRUE; |
| } |
| |
| return FALSE; |
| } |
| |
| int32_t CJS_GlobalData::GetSize() const { |
| return m_arrayGlobalData.GetSize(); |
| } |
| |
| CJS_GlobalData_Element* CJS_GlobalData::GetAt(int index) const { |
| return m_arrayGlobalData.GetAt(index); |
| } |
| |
| void CJS_GlobalData::LoadGlobalPersistentVariables() { |
| uint8_t* pBuffer = NULL; |
| 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; |
| FX_WORD wType = *((FX_WORD*)p); |
| p += sizeof(FX_WORD); |
| |
| // FX_WORD wTemp = (FX_WORD)(('X' << 8) | 'F'); |
| |
| if (wType == (FX_WORD)(('X' << 8) | 'F')) { |
| FX_WORD wVersion = *((FX_WORD*)p); |
| p += sizeof(FX_WORD); |
| |
| ASSERT(wVersion <= 2); |
| |
| FX_DWORD dwCount = *((FX_DWORD*)p); |
| p += sizeof(FX_DWORD); |
| |
| FX_DWORD dwSize = *((FX_DWORD*)p); |
| p += sizeof(FX_DWORD); |
| |
| if (dwSize == nLength - sizeof(FX_WORD) * 2 - sizeof(FX_DWORD) * 2) { |
| for (int32_t i = 0, sz = dwCount; i < sz; i++) { |
| if (p > pBuffer + nLength) |
| break; |
| |
| FX_DWORD dwNameLen = *((FX_DWORD*)p); |
| p += sizeof(FX_DWORD); |
| |
| if (p + dwNameLen > pBuffer + nLength) |
| break; |
| |
| CFX_ByteString sEntry = CFX_ByteString(p, dwNameLen); |
| p += sizeof(char) * dwNameLen; |
| |
| FX_WORD wDataType = *((FX_WORD*)p); |
| p += sizeof(FX_WORD); |
| |
| switch (wDataType) { |
| case JS_GLOBALDATA_TYPE_NUMBER: { |
| double dData = 0; |
| switch (wVersion) { |
| case 1: { |
| FX_DWORD dwData = *((FX_DWORD*)p); |
| p += sizeof(FX_DWORD); |
| dData = dwData; |
| } break; |
| case 2: { |
| dData = *((double*)p); |
| p += sizeof(double); |
| } break; |
| } |
| SetGlobalVariableNumber(sEntry, dData); |
| SetGlobalVariablePersistent(sEntry, TRUE); |
| } break; |
| case JS_GLOBALDATA_TYPE_BOOLEAN: { |
| FX_WORD wData = *((FX_WORD*)p); |
| p += sizeof(FX_WORD); |
| SetGlobalVariableBoolean(sEntry, (bool)(wData == 1)); |
| SetGlobalVariablePersistent(sEntry, TRUE); |
| } break; |
| case JS_GLOBALDATA_TYPE_STRING: { |
| FX_DWORD dwLength = *((FX_DWORD*)p); |
| p += sizeof(FX_DWORD); |
| |
| if (p + dwLength > pBuffer + nLength) |
| break; |
| |
| SetGlobalVariableString(sEntry, CFX_ByteString(p, dwLength)); |
| SetGlobalVariablePersistent(sEntry, TRUE); |
| p += sizeof(char) * dwLength; |
| } break; |
| case JS_GLOBALDATA_TYPE_NULL: { |
| SetGlobalVariableNull(sEntry); |
| SetGlobalVariablePersistent(sEntry, TRUE); |
| } |
| } |
| } |
| } |
| } |
| FX_Free(pBuffer); |
| } |
| } |
| |
| void CJS_GlobalData::SaveGlobalPersisitentVariables() { |
| FX_DWORD nCount = 0; |
| CFX_BinaryBuf sData; |
| |
| for (int i = 0, sz = m_arrayGlobalData.GetSize(); i < sz; i++) { |
| CJS_GlobalData_Element* pElement = m_arrayGlobalData.GetAt(i); |
| 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; |
| |
| FX_WORD wType = (FX_WORD)(('X' << 8) | 'F'); |
| sFile.AppendBlock(&wType, sizeof(FX_WORD)); |
| FX_WORD wVersion = 2; |
| sFile.AppendBlock(&wVersion, sizeof(FX_WORD)); |
| sFile.AppendBlock(&nCount, sizeof(FX_DWORD)); |
| FX_DWORD dwSize = sData.GetSize(); |
| sFile.AppendBlock(&dwSize, sizeof(FX_DWORD)); |
| |
| sFile.AppendBlock(sData.GetBuffer(), sData.GetSize()); |
| |
| CRYPT_ArcFourCryptBlock(sFile.GetBuffer(), sFile.GetSize(), JS_RC4KEY, |
| sizeof(JS_RC4KEY)); |
| WriteFileBuffer(m_sFilePath.c_str(), (const FX_CHAR*)sFile.GetBuffer(), |
| sFile.GetSize()); |
| } |
| |
| void CJS_GlobalData::LoadFileBuffer(const FX_WCHAR* sFilePath, |
| uint8_t*& pBuffer, |
| int32_t& nLength) { |
| // UnSupport. |
| } |
| |
| void CJS_GlobalData::WriteFileBuffer(const FX_WCHAR* sFilePath, |
| const FX_CHAR* pBuffer, |
| int32_t nLength) { |
| // UnSupport. |
| } |
| |
| void CJS_GlobalData::MakeByteString(const CFX_ByteString& name, |
| CJS_KeyValue* pData, |
| CFX_BinaryBuf& sData) { |
| FX_WORD wType = (FX_WORD)pData->nType; |
| switch (wType) { |
| case JS_GLOBALDATA_TYPE_NUMBER: { |
| FX_DWORD dwNameLen = (FX_DWORD)name.GetLength(); |
| sData.AppendBlock(&dwNameLen, sizeof(FX_DWORD)); |
| sData.AppendString(name); |
| sData.AppendBlock(&wType, sizeof(FX_WORD)); |
| |
| double dData = pData->dData; |
| sData.AppendBlock(&dData, sizeof(double)); |
| } break; |
| case JS_GLOBALDATA_TYPE_BOOLEAN: { |
| FX_DWORD dwNameLen = (FX_DWORD)name.GetLength(); |
| sData.AppendBlock(&dwNameLen, sizeof(FX_DWORD)); |
| sData.AppendString(name); |
| sData.AppendBlock(&wType, sizeof(FX_WORD)); |
| |
| FX_WORD wData = (FX_WORD)pData->bData; |
| sData.AppendBlock(&wData, sizeof(FX_WORD)); |
| } break; |
| case JS_GLOBALDATA_TYPE_STRING: { |
| FX_DWORD dwNameLen = (FX_DWORD)name.GetLength(); |
| sData.AppendBlock(&dwNameLen, sizeof(FX_DWORD)); |
| sData.AppendString(name); |
| sData.AppendBlock(&wType, sizeof(FX_WORD)); |
| |
| FX_DWORD dwDataLen = (FX_DWORD)pData->sData.GetLength(); |
| sData.AppendBlock(&dwDataLen, sizeof(FX_DWORD)); |
| sData.AppendString(pData->sData); |
| } break; |
| case JS_GLOBALDATA_TYPE_NULL: { |
| FX_DWORD dwNameLen = (FX_DWORD)name.GetLength(); |
| sData.AppendBlock(&dwNameLen, sizeof(FX_DWORD)); |
| sData.AppendString(name); |
| sData.AppendBlock(&wType, sizeof(FX_DWORD)); |
| } break; |
| default: |
| break; |
| } |
| } |
