mirror of https://github.com/Icinga/icinga2.git
1025 lines
28 KiB
C++
1025 lines
28 KiB
C++
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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#include "config/expression.hpp"
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#include "config/configitem.hpp"
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#include "config/configcompiler.hpp"
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#include "config/vmops.hpp"
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#include "base/array.hpp"
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#include "base/json.hpp"
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#include "base/object.hpp"
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#include "base/logger.hpp"
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#include "base/exception.hpp"
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#include "base/scriptglobal.hpp"
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#include "base/loader.hpp"
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#include "base/reference.hpp"
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#include "base/namespace.hpp"
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#include <boost/exception_ptr.hpp>
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#include <boost/exception/errinfo_nested_exception.hpp>
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using namespace icinga;
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boost::signals2::signal<void (ScriptFrame&, ScriptError *ex, const DebugInfo&)> Expression::OnBreakpoint;
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boost::thread_specific_ptr<bool> l_InBreakpointHandler;
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Expression::~Expression()
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{ }
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void Expression::ScriptBreakpoint(ScriptFrame& frame, ScriptError *ex, const DebugInfo& di)
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{
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bool *inHandler = l_InBreakpointHandler.get();
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if (!inHandler || !*inHandler) {
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inHandler = new bool(true);
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l_InBreakpointHandler.reset(inHandler);
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OnBreakpoint(frame, ex, di);
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*inHandler = false;
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}
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}
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ExpressionResult Expression::Evaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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try {
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#ifdef I2_DEBUG
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/* std::ostringstream msgbuf;
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ShowCodeLocation(msgbuf, GetDebugInfo(), false);
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Log(LogDebug, "Expression")
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<< "Executing:\n" << msgbuf.str();*/
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#endif /* I2_DEBUG */
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frame.IncreaseStackDepth();
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ExpressionResult result = DoEvaluate(frame, dhint);
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frame.DecreaseStackDepth();
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return result;
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} catch (ScriptError& ex) {
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frame.DecreaseStackDepth();
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ScriptBreakpoint(frame, &ex, GetDebugInfo());
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throw;
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} catch (const std::exception& ex) {
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frame.DecreaseStackDepth();
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BOOST_THROW_EXCEPTION(ScriptError("Error while evaluating expression: " + String(ex.what()), GetDebugInfo())
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<< boost::errinfo_nested_exception(boost::current_exception()));
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}
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frame.DecreaseStackDepth();
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}
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bool Expression::GetReference(ScriptFrame& frame, bool init_dict, Value *parent, String *index, DebugHint **dhint) const
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{
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return false;
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}
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const DebugInfo& Expression::GetDebugInfo() const
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{
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static DebugInfo debugInfo;
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return debugInfo;
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}
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std::unique_ptr<Expression> icinga::MakeIndexer(ScopeSpecifier scopeSpec, const String& index)
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{
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std::unique_ptr<Expression> scope{new GetScopeExpression(scopeSpec)};
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return std::unique_ptr<Expression>(new IndexerExpression(std::move(scope), MakeLiteral(index)));
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}
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void DictExpression::MakeInline()
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{
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m_Inline = true;
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}
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LiteralExpression::LiteralExpression(Value value)
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: m_Value(std::move(value))
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{ }
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ExpressionResult LiteralExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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return m_Value;
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}
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const DebugInfo& DebuggableExpression::GetDebugInfo() const
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{
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return m_DebugInfo;
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}
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VariableExpression::VariableExpression(String variable, std::vector<std::shared_ptr<Expression> > imports, const DebugInfo& debugInfo)
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: DebuggableExpression(debugInfo), m_Variable(std::move(variable)), m_Imports(std::move(imports))
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{
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m_Imports.push_back(MakeIndexer(ScopeGlobal, "System"));
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m_Imports.push_back(std::unique_ptr<Expression>(new IndexerExpression(MakeIndexer(ScopeGlobal, "System"), MakeLiteral("Configuration"))));
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m_Imports.push_back(MakeIndexer(ScopeGlobal, "Types"));
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m_Imports.push_back(MakeIndexer(ScopeGlobal, "Icinga"));
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}
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ExpressionResult VariableExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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Value value;
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if (frame.Locals && frame.Locals->Get(m_Variable, &value))
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return value;
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else if (frame.Self.IsObject() && frame.Locals != frame.Self.Get<Object::Ptr>() && frame.Self.Get<Object::Ptr>()->GetOwnField(m_Variable, &value))
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return value;
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else if (VMOps::FindVarImport(frame, m_Imports, m_Variable, &value, m_DebugInfo))
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return value;
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else
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return ScriptGlobal::Get(m_Variable);
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}
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bool VariableExpression::GetReference(ScriptFrame& frame, bool init_dict, Value *parent, String *index, DebugHint **dhint) const
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{
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*index = m_Variable;
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if (frame.Locals && frame.Locals->Contains(m_Variable)) {
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*parent = frame.Locals;
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if (dhint)
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*dhint = nullptr;
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} else if (frame.Self.IsObject() && frame.Locals != frame.Self.Get<Object::Ptr>() && frame.Self.Get<Object::Ptr>()->HasOwnField(m_Variable)) {
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*parent = frame.Self;
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if (dhint && *dhint)
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*dhint = new DebugHint((*dhint)->GetChild(m_Variable));
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} else if (VMOps::FindVarImportRef(frame, m_Imports, m_Variable, parent, m_DebugInfo)) {
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return true;
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} else if (ScriptGlobal::Exists(m_Variable)) {
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*parent = ScriptGlobal::GetGlobals();
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if (dhint)
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*dhint = nullptr;
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} else
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*parent = frame.Self;
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return true;
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}
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ExpressionResult RefExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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Value parent;
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String index;
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if (!m_Operand->GetReference(frame, false, &parent, &index, &dhint))
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BOOST_THROW_EXCEPTION(ScriptError("Cannot obtain reference for expression.", m_DebugInfo));
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if (!parent.IsObject())
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BOOST_THROW_EXCEPTION(ScriptError("Cannot obtain reference for expression because parent is not an object.", m_DebugInfo));
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return new Reference(parent, index);
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}
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ExpressionResult DerefExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand = m_Operand->Evaluate(frame);
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CHECK_RESULT(operand);
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Object::Ptr obj = operand.GetValue();
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Reference::Ptr ref = dynamic_pointer_cast<Reference>(obj);
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if (!ref)
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BOOST_THROW_EXCEPTION(ScriptError("Invalid reference specified.", GetDebugInfo()));
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return ref->Get();
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}
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bool DerefExpression::GetReference(ScriptFrame& frame, bool init_dict, Value *parent, String *index, DebugHint **dhint) const
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{
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ExpressionResult operand = m_Operand->Evaluate(frame);
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if (operand.GetCode() != ResultOK)
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return false;
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Reference::Ptr ref = operand.GetValue();
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*parent = ref->GetParent();
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*index = ref->GetIndex();
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return true;
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}
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ExpressionResult NegateExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand = m_Operand->Evaluate(frame);
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CHECK_RESULT(operand);
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return ~(long)operand.GetValue();
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}
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ExpressionResult LogicalNegateExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand = m_Operand->Evaluate(frame);
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CHECK_RESULT(operand);
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return !operand.GetValue().ToBool();
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}
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ExpressionResult AddExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() + operand2.GetValue();
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}
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ExpressionResult SubtractExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() - operand2.GetValue();
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}
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ExpressionResult MultiplyExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() * operand2.GetValue();
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}
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ExpressionResult DivideExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() / operand2.GetValue();
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}
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ExpressionResult ModuloExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() % operand2.GetValue();
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}
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ExpressionResult XorExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() ^ operand2.GetValue();
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}
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ExpressionResult BinaryAndExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() & operand2.GetValue();
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}
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ExpressionResult BinaryOrExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() | operand2.GetValue();
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}
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ExpressionResult ShiftLeftExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() << operand2.GetValue();
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}
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ExpressionResult ShiftRightExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() >> operand2.GetValue();
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}
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ExpressionResult EqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() == operand2.GetValue();
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}
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ExpressionResult NotEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() != operand2.GetValue();
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}
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ExpressionResult LessThanExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() < operand2.GetValue();
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}
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ExpressionResult GreaterThanExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() > operand2.GetValue();
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}
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ExpressionResult LessThanOrEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() <= operand2.GetValue();
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}
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ExpressionResult GreaterThanOrEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand1.GetValue() >= operand2.GetValue();
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}
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ExpressionResult InExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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if (operand2.GetValue().IsEmpty())
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return false;
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else if (!operand2.GetValue().IsObjectType<Array>())
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BOOST_THROW_EXCEPTION(ScriptError("Invalid right side argument for 'in' operator: " + JsonEncode(operand2.GetValue()), m_DebugInfo));
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1)
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Array::Ptr arr = operand2.GetValue();
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return arr->Contains(operand1.GetValue());
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}
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ExpressionResult NotInExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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if (operand2.GetValue().IsEmpty())
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return true;
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else if (!operand2.GetValue().IsObjectType<Array>())
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BOOST_THROW_EXCEPTION(ScriptError("Invalid right side argument for 'in' operator: " + JsonEncode(operand2.GetValue()), m_DebugInfo));
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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Array::Ptr arr = operand2.GetValue();
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return !arr->Contains(operand1.GetValue());
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}
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ExpressionResult LogicalAndExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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if (!operand1.GetValue().ToBool())
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return operand1;
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else {
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand2.GetValue();
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}
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}
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ExpressionResult LogicalOrExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ExpressionResult operand1 = m_Operand1->Evaluate(frame);
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CHECK_RESULT(operand1);
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if (operand1.GetValue().ToBool())
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return operand1;
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else {
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ExpressionResult operand2 = m_Operand2->Evaluate(frame);
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CHECK_RESULT(operand2);
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return operand2.GetValue();
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}
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}
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ExpressionResult FunctionCallExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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Value self, vfunc;
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String index;
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if (m_FName->GetReference(frame, false, &self, &index))
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vfunc = VMOps::GetField(self, index, frame.Sandboxed, m_DebugInfo);
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else {
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ExpressionResult vfuncres = m_FName->Evaluate(frame);
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CHECK_RESULT(vfuncres);
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vfunc = vfuncres.GetValue();
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}
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if (vfunc.IsObjectType<Type>()) {
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std::vector<Value> arguments;
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arguments.reserve(m_Args.size());
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for (const auto& arg : m_Args) {
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ExpressionResult argres = arg->Evaluate(frame);
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CHECK_RESULT(argres);
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arguments.push_back(argres.GetValue());
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}
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return VMOps::ConstructorCall(vfunc, arguments, m_DebugInfo);
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}
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if (!vfunc.IsObjectType<Function>())
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BOOST_THROW_EXCEPTION(ScriptError("Argument is not a callable object.", m_DebugInfo));
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Function::Ptr func = vfunc;
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if (!func->IsSideEffectFree() && frame.Sandboxed)
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BOOST_THROW_EXCEPTION(ScriptError("Function is not marked as safe for sandbox mode.", m_DebugInfo));
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std::vector<Value> arguments;
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arguments.reserve(m_Args.size());
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for (const auto& arg : m_Args) {
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ExpressionResult argres = arg->Evaluate(frame);
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CHECK_RESULT(argres);
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arguments.push_back(argres.GetValue());
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}
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return VMOps::FunctionCall(frame, self, func, arguments);
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}
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ExpressionResult ArrayExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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ArrayData result;
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result.reserve(m_Expressions.size());
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for (const auto& aexpr : m_Expressions) {
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ExpressionResult element = aexpr->Evaluate(frame);
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CHECK_RESULT(element);
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result.push_back(element.GetValue());
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}
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return new Array(std::move(result));
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}
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ExpressionResult DictExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
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{
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Value self;
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if (!m_Inline) {
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self = frame.Self;
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frame.Self = new Dictionary();
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}
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Value result;
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try {
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for (const auto& aexpr : m_Expressions) {
|
|
ExpressionResult element = aexpr->Evaluate(frame, m_Inline ? dhint : nullptr);
|
|
CHECK_RESULT(element);
|
|
result = element.GetValue();
|
|
}
|
|
} catch (...) {
|
|
if (!m_Inline)
|
|
std::swap(self, frame.Self);
|
|
throw;
|
|
}
|
|
|
|
if (m_Inline)
|
|
return result;
|
|
else {
|
|
std::swap(self, frame.Self);
|
|
return self;
|
|
}
|
|
}
|
|
|
|
ExpressionResult GetScopeExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (m_ScopeSpec == ScopeLocal)
|
|
return frame.Locals;
|
|
else if (m_ScopeSpec == ScopeThis)
|
|
return frame.Self;
|
|
else if (m_ScopeSpec == ScopeGlobal)
|
|
return ScriptGlobal::GetGlobals();
|
|
else
|
|
VERIFY(!"Invalid scope.");
|
|
}
|
|
|
|
ExpressionResult SetExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (frame.Sandboxed)
|
|
BOOST_THROW_EXCEPTION(ScriptError("Assignments are not allowed in sandbox mode.", m_DebugInfo));
|
|
|
|
DebugHint *psdhint = dhint;
|
|
|
|
Value parent;
|
|
String index;
|
|
|
|
if (!m_Operand1->GetReference(frame, true, &parent, &index, &psdhint))
|
|
BOOST_THROW_EXCEPTION(ScriptError("Expression cannot be assigned to.", m_DebugInfo));
|
|
|
|
ExpressionResult operand2 = m_Operand2->Evaluate(frame, dhint);
|
|
CHECK_RESULT(operand2);
|
|
|
|
if (m_Op != OpSetLiteral) {
|
|
Value object = VMOps::GetField(parent, index, frame.Sandboxed, m_DebugInfo);
|
|
|
|
switch (m_Op) {
|
|
case OpSetAdd:
|
|
operand2 = object + operand2;
|
|
break;
|
|
case OpSetSubtract:
|
|
operand2 = object - operand2;
|
|
break;
|
|
case OpSetMultiply:
|
|
operand2 = object * operand2;
|
|
break;
|
|
case OpSetDivide:
|
|
operand2 = object / operand2;
|
|
break;
|
|
case OpSetModulo:
|
|
operand2 = object % operand2;
|
|
break;
|
|
case OpSetXor:
|
|
operand2 = object ^ operand2;
|
|
break;
|
|
case OpSetBinaryAnd:
|
|
operand2 = object & operand2;
|
|
break;
|
|
case OpSetBinaryOr:
|
|
operand2 = object | operand2;
|
|
break;
|
|
default:
|
|
VERIFY(!"Invalid opcode.");
|
|
}
|
|
}
|
|
|
|
VMOps::SetField(parent, index, operand2.GetValue(), m_OverrideFrozen, m_DebugInfo);
|
|
|
|
if (psdhint) {
|
|
psdhint->AddMessage("=", m_DebugInfo);
|
|
|
|
if (psdhint != dhint)
|
|
delete psdhint;
|
|
}
|
|
|
|
return Empty;
|
|
}
|
|
|
|
void SetExpression::SetOverrideFrozen()
|
|
{
|
|
m_OverrideFrozen = true;
|
|
}
|
|
|
|
ExpressionResult SetConstExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
auto globals = ScriptGlobal::GetGlobals();
|
|
|
|
auto attr = globals->GetAttribute(m_Name);
|
|
|
|
if (dynamic_pointer_cast<ConstEmbeddedNamespaceValue>(attr)) {
|
|
std::ostringstream msgbuf;
|
|
msgbuf << "Value for constant '" << m_Name << "' was modified. This behaviour is deprecated.\n";
|
|
ShowCodeLocation(msgbuf, GetDebugInfo(), false);
|
|
Log(LogWarning, msgbuf.str());
|
|
}
|
|
|
|
ExpressionResult operandres = m_Operand->Evaluate(frame);
|
|
CHECK_RESULT(operandres);
|
|
Value operand = operandres.GetValue();
|
|
|
|
globals->SetAttribute(m_Name, std::make_shared<ConstEmbeddedNamespaceValue>(operand));
|
|
|
|
return Empty;
|
|
}
|
|
|
|
ExpressionResult ConditionalExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
ExpressionResult condition = m_Condition->Evaluate(frame, dhint);
|
|
CHECK_RESULT(condition);
|
|
|
|
if (condition.GetValue().ToBool())
|
|
return m_TrueBranch->Evaluate(frame, dhint);
|
|
else if (m_FalseBranch)
|
|
return m_FalseBranch->Evaluate(frame, dhint);
|
|
|
|
return Empty;
|
|
}
|
|
|
|
ExpressionResult WhileExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (frame.Sandboxed)
|
|
BOOST_THROW_EXCEPTION(ScriptError("While loops are not allowed in sandbox mode.", m_DebugInfo));
|
|
|
|
for (;;) {
|
|
ExpressionResult condition = m_Condition->Evaluate(frame, dhint);
|
|
CHECK_RESULT(condition);
|
|
|
|
if (!condition.GetValue().ToBool())
|
|
break;
|
|
|
|
ExpressionResult loop_body = m_LoopBody->Evaluate(frame, dhint);
|
|
CHECK_RESULT_LOOP(loop_body);
|
|
}
|
|
|
|
return Empty;
|
|
}
|
|
|
|
ExpressionResult ReturnExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
ExpressionResult operand = m_Operand->Evaluate(frame);
|
|
CHECK_RESULT(operand);
|
|
|
|
return ExpressionResult(operand.GetValue(), ResultReturn);
|
|
}
|
|
|
|
ExpressionResult BreakExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
return ExpressionResult(Empty, ResultBreak);
|
|
}
|
|
|
|
ExpressionResult ContinueExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
return ExpressionResult(Empty, ResultContinue);
|
|
}
|
|
|
|
ExpressionResult IndexerExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
ExpressionResult operand1 = m_Operand1->Evaluate(frame, dhint);
|
|
CHECK_RESULT(operand1);
|
|
|
|
ExpressionResult operand2 = m_Operand2->Evaluate(frame, dhint);
|
|
CHECK_RESULT(operand2);
|
|
|
|
return VMOps::GetField(operand1.GetValue(), operand2.GetValue(), frame.Sandboxed, m_DebugInfo);
|
|
}
|
|
|
|
bool IndexerExpression::GetReference(ScriptFrame& frame, bool init_dict, Value *parent, String *index, DebugHint **dhint) const
|
|
{
|
|
Value vparent;
|
|
String vindex;
|
|
DebugHint *psdhint = nullptr;
|
|
bool free_psd = false;
|
|
|
|
if (dhint)
|
|
psdhint = *dhint;
|
|
|
|
if (frame.Sandboxed)
|
|
init_dict = false;
|
|
|
|
if (m_Operand1->GetReference(frame, init_dict, &vparent, &vindex, &psdhint)) {
|
|
if (init_dict) {
|
|
Value old_value;
|
|
bool has_field = true;
|
|
|
|
if (vparent.IsObject()) {
|
|
Object::Ptr oparent = vparent;
|
|
has_field = oparent->HasOwnField(vindex);
|
|
}
|
|
|
|
if (has_field)
|
|
old_value = VMOps::GetField(vparent, vindex, frame.Sandboxed, m_Operand1->GetDebugInfo());
|
|
|
|
if (old_value.IsEmpty() && !old_value.IsString())
|
|
VMOps::SetField(vparent, vindex, new Dictionary(), m_OverrideFrozen, m_Operand1->GetDebugInfo());
|
|
}
|
|
|
|
*parent = VMOps::GetField(vparent, vindex, frame.Sandboxed, m_DebugInfo);
|
|
free_psd = true;
|
|
} else {
|
|
ExpressionResult operand1 = m_Operand1->Evaluate(frame);
|
|
*parent = operand1.GetValue();
|
|
}
|
|
|
|
ExpressionResult operand2 = m_Operand2->Evaluate(frame);
|
|
*index = operand2.GetValue();
|
|
|
|
if (dhint) {
|
|
if (psdhint)
|
|
*dhint = new DebugHint(psdhint->GetChild(*index));
|
|
else
|
|
*dhint = nullptr;
|
|
}
|
|
|
|
if (free_psd)
|
|
delete psdhint;
|
|
|
|
return true;
|
|
}
|
|
|
|
void IndexerExpression::SetOverrideFrozen()
|
|
{
|
|
m_OverrideFrozen = true;
|
|
}
|
|
|
|
void icinga::BindToScope(std::unique_ptr<Expression>& expr, ScopeSpecifier scopeSpec)
|
|
{
|
|
auto *dexpr = dynamic_cast<DictExpression *>(expr.get());
|
|
|
|
if (dexpr) {
|
|
for (auto& expr : dexpr->m_Expressions)
|
|
BindToScope(expr, scopeSpec);
|
|
|
|
return;
|
|
}
|
|
|
|
auto *aexpr = dynamic_cast<SetExpression *>(expr.get());
|
|
|
|
if (aexpr) {
|
|
BindToScope(aexpr->m_Operand1, scopeSpec);
|
|
|
|
return;
|
|
}
|
|
|
|
auto *iexpr = dynamic_cast<IndexerExpression *>(expr.get());
|
|
|
|
if (iexpr) {
|
|
BindToScope(iexpr->m_Operand1, scopeSpec);
|
|
return;
|
|
}
|
|
|
|
auto *lexpr = dynamic_cast<LiteralExpression *>(expr.get());
|
|
|
|
if (lexpr && lexpr->GetValue().IsString()) {
|
|
std::unique_ptr<Expression> scope{new GetScopeExpression(scopeSpec)};
|
|
expr.reset(new IndexerExpression(std::move(scope), std::move(expr), lexpr->GetDebugInfo()));
|
|
}
|
|
|
|
auto *vexpr = dynamic_cast<VariableExpression *>(expr.get());
|
|
|
|
if (vexpr) {
|
|
std::unique_ptr<Expression> scope{new GetScopeExpression(scopeSpec)};
|
|
expr.reset(new IndexerExpression(std::move(scope), MakeLiteral(vexpr->GetVariable()), vexpr->GetDebugInfo()));
|
|
}
|
|
}
|
|
|
|
ExpressionResult ThrowExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
ExpressionResult messageres = m_Message->Evaluate(frame);
|
|
CHECK_RESULT(messageres);
|
|
Value message = messageres.GetValue();
|
|
BOOST_THROW_EXCEPTION(ScriptError(message, m_DebugInfo, m_IncompleteExpr));
|
|
}
|
|
|
|
ExpressionResult ImportExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (frame.Sandboxed)
|
|
BOOST_THROW_EXCEPTION(ScriptError("Imports are not allowed in sandbox mode.", m_DebugInfo));
|
|
|
|
String type = VMOps::GetField(frame.Self, "type", frame.Sandboxed, m_DebugInfo);
|
|
ExpressionResult nameres = m_Name->Evaluate(frame);
|
|
CHECK_RESULT(nameres);
|
|
Value name = nameres.GetValue();
|
|
|
|
if (!name.IsString())
|
|
BOOST_THROW_EXCEPTION(ScriptError("Template/object name must be a string", m_DebugInfo));
|
|
|
|
ConfigItem::Ptr item = ConfigItem::GetByTypeAndName(Type::GetByName(type), name);
|
|
|
|
if (!item)
|
|
BOOST_THROW_EXCEPTION(ScriptError("Import references unknown template: '" + name + "'", m_DebugInfo));
|
|
|
|
Dictionary::Ptr scope = item->GetScope();
|
|
|
|
if (scope)
|
|
scope->CopyTo(frame.Locals);
|
|
|
|
ExpressionResult result = item->GetExpression()->Evaluate(frame, dhint);
|
|
CHECK_RESULT(result);
|
|
|
|
return Empty;
|
|
}
|
|
|
|
ExpressionResult ImportDefaultTemplatesExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (frame.Sandboxed)
|
|
BOOST_THROW_EXCEPTION(ScriptError("Imports are not allowed in sandbox mode.", m_DebugInfo));
|
|
|
|
String type = VMOps::GetField(frame.Self, "type", frame.Sandboxed, m_DebugInfo);
|
|
Type::Ptr ptype = Type::GetByName(type);
|
|
|
|
for (const ConfigItem::Ptr& item : ConfigItem::GetDefaultTemplates(ptype)) {
|
|
Dictionary::Ptr scope = item->GetScope();
|
|
|
|
if (scope)
|
|
scope->CopyTo(frame.Locals);
|
|
|
|
ExpressionResult result = item->GetExpression()->Evaluate(frame, dhint);
|
|
CHECK_RESULT(result);
|
|
}
|
|
|
|
return Empty;
|
|
}
|
|
|
|
ExpressionResult FunctionExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
return VMOps::NewFunction(frame, m_Name, m_Args, m_ClosedVars, m_Expression);
|
|
}
|
|
|
|
ExpressionResult ApplyExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (frame.Sandboxed)
|
|
BOOST_THROW_EXCEPTION(ScriptError("Apply rules are not allowed in sandbox mode.", m_DebugInfo));
|
|
|
|
ExpressionResult nameres = m_Name->Evaluate(frame);
|
|
CHECK_RESULT(nameres);
|
|
|
|
return VMOps::NewApply(frame, m_Type, m_Target, nameres.GetValue(), m_Filter,
|
|
m_Package, m_FKVar, m_FVVar, m_FTerm, m_ClosedVars, m_IgnoreOnError, m_Expression, m_DebugInfo);
|
|
}
|
|
|
|
ExpressionResult NamespaceExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
Namespace::Ptr ns = new Namespace(new ConstNamespaceBehavior());
|
|
|
|
ScriptFrame innerFrame(true, ns);
|
|
ExpressionResult result = m_Expression->Evaluate(innerFrame);
|
|
CHECK_RESULT(result);
|
|
|
|
return ns;
|
|
}
|
|
|
|
ExpressionResult ObjectExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (frame.Sandboxed)
|
|
BOOST_THROW_EXCEPTION(ScriptError("Object definitions are not allowed in sandbox mode.", m_DebugInfo));
|
|
|
|
ExpressionResult typeres = m_Type->Evaluate(frame, dhint);
|
|
CHECK_RESULT(typeres);
|
|
Type::Ptr type = typeres.GetValue();
|
|
|
|
String name;
|
|
|
|
if (m_Name) {
|
|
ExpressionResult nameres = m_Name->Evaluate(frame, dhint);
|
|
CHECK_RESULT(nameres);
|
|
|
|
name = nameres.GetValue();
|
|
}
|
|
|
|
return VMOps::NewObject(frame, m_Abstract, type, name, m_Filter, m_Zone,
|
|
m_Package, m_DefaultTmpl, m_IgnoreOnError, m_ClosedVars, m_Expression, m_DebugInfo);
|
|
}
|
|
|
|
ExpressionResult ForExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (frame.Sandboxed)
|
|
BOOST_THROW_EXCEPTION(ScriptError("For loops are not allowed in sandbox mode.", m_DebugInfo));
|
|
|
|
ExpressionResult valueres = m_Value->Evaluate(frame, dhint);
|
|
CHECK_RESULT(valueres);
|
|
|
|
return VMOps::For(frame, m_FKVar, m_FVVar, valueres.GetValue(), m_Expression, m_DebugInfo);
|
|
}
|
|
|
|
ExpressionResult LibraryExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (frame.Sandboxed)
|
|
BOOST_THROW_EXCEPTION(ScriptError("Loading libraries is not allowed in sandbox mode.", m_DebugInfo));
|
|
|
|
ExpressionResult libres = m_Operand->Evaluate(frame, dhint);
|
|
CHECK_RESULT(libres);
|
|
|
|
Log(LogNotice, "config")
|
|
<< "Ignoring explicit load request for library \"" << libres << "\".";
|
|
|
|
return Empty;
|
|
}
|
|
|
|
ExpressionResult IncludeExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
if (frame.Sandboxed)
|
|
BOOST_THROW_EXCEPTION(ScriptError("Includes are not allowed in sandbox mode.", m_DebugInfo));
|
|
|
|
std::unique_ptr<Expression> expr;
|
|
String name, path, pattern;
|
|
|
|
switch (m_Type) {
|
|
case IncludeRegular:
|
|
{
|
|
ExpressionResult pathres = m_Path->Evaluate(frame, dhint);
|
|
CHECK_RESULT(pathres);
|
|
path = pathres.GetValue();
|
|
}
|
|
|
|
expr = ConfigCompiler::HandleInclude(m_RelativeBase, path, m_SearchIncludes, m_Zone, m_Package, m_DebugInfo);
|
|
break;
|
|
|
|
case IncludeRecursive:
|
|
{
|
|
ExpressionResult pathres = m_Path->Evaluate(frame, dhint);
|
|
CHECK_RESULT(pathres);
|
|
path = pathres.GetValue();
|
|
}
|
|
|
|
{
|
|
ExpressionResult patternres = m_Pattern->Evaluate(frame, dhint);
|
|
CHECK_RESULT(patternres);
|
|
pattern = patternres.GetValue();
|
|
}
|
|
|
|
expr = ConfigCompiler::HandleIncludeRecursive(m_RelativeBase, path, pattern, m_Zone, m_Package, m_DebugInfo);
|
|
break;
|
|
|
|
case IncludeZones:
|
|
{
|
|
ExpressionResult nameres = m_Name->Evaluate(frame, dhint);
|
|
CHECK_RESULT(nameres);
|
|
name = nameres.GetValue();
|
|
}
|
|
|
|
{
|
|
ExpressionResult pathres = m_Path->Evaluate(frame, dhint);
|
|
CHECK_RESULT(pathres);
|
|
path = pathres.GetValue();
|
|
}
|
|
|
|
{
|
|
ExpressionResult patternres = m_Pattern->Evaluate(frame, dhint);
|
|
CHECK_RESULT(patternres);
|
|
pattern = patternres.GetValue();
|
|
}
|
|
|
|
expr = ConfigCompiler::HandleIncludeZones(m_RelativeBase, name, path, pattern, m_Package, m_DebugInfo);
|
|
break;
|
|
}
|
|
|
|
ExpressionResult res(Empty);
|
|
|
|
try {
|
|
res = expr->Evaluate(frame, dhint);
|
|
} catch (const std::exception&) {
|
|
throw;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
ExpressionResult BreakpointExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
ScriptBreakpoint(frame, nullptr, GetDebugInfo());
|
|
|
|
return Empty;
|
|
}
|
|
|
|
ExpressionResult TryExceptExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
|
|
{
|
|
try {
|
|
ExpressionResult tryResult = m_TryBody->Evaluate(frame, dhint);
|
|
CHECK_RESULT(tryResult);
|
|
} catch (const std::exception&) {
|
|
ExpressionResult exceptResult = m_ExceptBody->Evaluate(frame, dhint);
|
|
CHECK_RESULT(exceptResult);
|
|
}
|
|
|
|
return Empty;
|
|
}
|
|
|