1 files changed, 97 insertions, 6 deletions

diff --git a/xfa/fxfa/parser/cxfa_node.cpp b/xfa/fxfa/parser/cxfa_node.cpp
index 50c4c4195e..8c8f0c69f2 100644
--- a/xfa/fxfa/parser/cxfa_node.cpp
+++ b/xfa/fxfa/parser/cxfa_node.cpp
@@ -12,6 +12,7 @@
 #include <utility>
 #include <vector>
 
+#include "core/fxcrt/autorestorer.h"
 #include "core/fxcrt/cfx_decimal.h"
 #include "core/fxcrt/cfx_memorystream.h"
 #include "core/fxcrt/fx_codepage.h"
@@ -56,6 +57,8 @@
 
 namespace {
 
+constexpr uint8_t kMaxExecuteRecursion = 2;
+
 std::vector<CXFA_Node*> NodesSortedByDocumentIdx(
     const std::set<CXFA_Node*>& rgNodeSet) {
   if (rgNodeSet.empty())
@@ -1690,8 +1693,7 @@ int32_t CXFA_Node::ProcessEvent(CXFA_FFDocView* docView,
     case XFA_Element::Execute:
       break;
     case XFA_Element::Script:
-      return GetWidgetAcc()->ExecuteScript(docView, event->GetScript(),
-                                           pEventParam);
+      return ExecuteScript(docView, event->GetScript(), pEventParam);
     case XFA_Element::SignData:
       break;
     case XFA_Element::Submit:
@@ -1715,8 +1717,7 @@ int32_t CXFA_Node::ProcessCalculate(CXFA_FFDocView* docView) {
 
   CXFA_EventParam EventParam;
   EventParam.m_eType = XFA_EVENT_Calculate;
-  int32_t iRet =
-      GetWidgetAcc()->ExecuteScript(docView, calc->GetScript(), &EventParam);
+  int32_t iRet = ExecuteScript(docView, calc->GetScript(), &EventParam);
   if (iRet != XFA_EVENTERROR_Success)
     return iRet;
 
@@ -1904,8 +1905,7 @@ int32_t CXFA_Node::ProcessValidate(CXFA_FFDocView* docView, int32_t iFlags) {
     CXFA_EventParam eParam;
     eParam.m_eType = XFA_EVENT_Validate;
     eParam.m_pTarget = GetWidgetAcc();
-    std::tie(iRet, bRet) =
-        GetWidgetAcc()->ExecuteBoolScript(docView, script, &eParam);
+    std::tie(iRet, bRet) = ExecuteBoolScript(docView, script, &eParam);
   }
 
   XFA_VERSION version = docView->GetDoc()->GetXFADoc()->GetCurVersionMode();
@@ -1963,3 +1963,94 @@ WideString CXFA_Node::GetValidateMessage(bool bError, bool bVersionFlag) {
       L"validations for %ls, click Ignore.",
       wsCaptionName.c_str(), wsCaptionName.c_str());
 }
+
+int32_t CXFA_Node::ExecuteScript(CXFA_FFDocView* docView,
+                                 CXFA_Script* script,
+                                 CXFA_EventParam* pEventParam) {
+  bool bRet;
+  int32_t iRet;
+  std::tie(iRet, bRet) = ExecuteBoolScript(docView, script, pEventParam);
+  return iRet;
+}
+
+std::pair<int32_t, bool> CXFA_Node::ExecuteBoolScript(
+    CXFA_FFDocView* docView,
+    CXFA_Script* script,
+    CXFA_EventParam* pEventParam) {
+  if (m_ExecuteRecursionDepth > kMaxExecuteRecursion)
+    return {XFA_EVENTERROR_Success, false};
+
+  ASSERT(pEventParam);
+  if (!script)
+    return {XFA_EVENTERROR_NotExist, false};
+  if (script->GetRunAt() == XFA_AttributeEnum::Server)
+    return {XFA_EVENTERROR_Disabled, false};
+
+  WideString wsExpression = script->GetExpression();
+  if (wsExpression.IsEmpty())
+    return {XFA_EVENTERROR_NotExist, false};
+
+  CXFA_Script::Type eScriptType = script->GetContentType();
+  if (eScriptType == CXFA_Script::Type::Unknown)
+    return {XFA_EVENTERROR_Success, false};
+
+  CXFA_FFDoc* pDoc = docView->GetDoc();
+  CFXJSE_Engine* pContext = pDoc->GetXFADoc()->GetScriptContext();
+  pContext->SetEventParam(*pEventParam);
+  pContext->SetRunAtType(script->GetRunAt());
+
+  std::vector<CXFA_Node*> refNodes;
+  if (pEventParam->m_eType == XFA_EVENT_InitCalculate ||
+      pEventParam->m_eType == XFA_EVENT_Calculate) {
+    pContext->SetNodesOfRunScript(&refNodes);
+  }
+
+  auto pTmpRetValue = pdfium::MakeUnique<CFXJSE_Value>(pContext->GetIsolate());
+  bool bRet = false;
+  {
+    AutoRestorer<uint8_t> restorer(&m_ExecuteRecursionDepth);
+    ++m_ExecuteRecursionDepth;
+    bRet = pContext->RunScript(eScriptType, wsExpression.AsStringView(),
+                               pTmpRetValue.get(), this);
+  }
+
+  int32_t iRet = XFA_EVENTERROR_Error;
+  if (bRet) {
+    iRet = XFA_EVENTERROR_Success;
+    if (pEventParam->m_eType == XFA_EVENT_Calculate ||
+        pEventParam->m_eType == XFA_EVENT_InitCalculate) {
+      if (!pTmpRetValue->IsUndefined()) {
+        if (!pTmpRetValue->IsNull())
+          pEventParam->m_wsResult = pTmpRetValue->ToWideString();
+
+        iRet = XFA_EVENTERROR_Success;
+      } else {
+        iRet = XFA_EVENTERROR_Error;
+      }
+      if (pEventParam->m_eType == XFA_EVENT_InitCalculate) {
+        if ((iRet == XFA_EVENTERROR_Success) &&
+            (GetRawValue() != pEventParam->m_wsResult)) {
+          GetWidgetAcc()->SetValue(XFA_VALUEPICTURE_Raw,
+                                   pEventParam->m_wsResult);
+          docView->AddValidateWidget(GetWidgetAcc());
+        }
+      }
+      for (CXFA_Node* pRefNode : refNodes) {
+        if (pRefNode == this)
+          continue;
+
+        CXFA_CalcData* pGlobalData = pRefNode->JSObject()->GetCalcData();
+        if (!pGlobalData) {
+          pRefNode->JSObject()->SetCalcData(
+              pdfium::MakeUnique<CXFA_CalcData>());
+          pGlobalData = pRefNode->JSObject()->GetCalcData();
+        }
+        if (!pdfium::ContainsValue(pGlobalData->m_Globals, this))
+          pGlobalData->m_Globals.push_back(this);
+      }
+    }
+  }
+  pContext->SetNodesOfRunScript(nullptr);
+
+  return {iRet, pTmpRetValue->IsBoolean() ? pTmpRetValue->ToBoolean() : false};
+}