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-rw-r--r--src/Bindings/LuaNameLookup.cpp50
-rw-r--r--src/Bindings/LuaNameLookup.h11
-rw-r--r--src/Bindings/LuaServerHandle.cpp54
-rw-r--r--src/Bindings/LuaServerHandle.h11
-rw-r--r--src/Bindings/LuaState.cpp161
-rw-r--r--src/Bindings/LuaState.h201
-rw-r--r--src/Bindings/LuaTCPLink.cpp146
-rw-r--r--src/Bindings/LuaTCPLink.h13
-rw-r--r--src/Bindings/LuaUDPEndpoint.cpp89
-rw-r--r--src/Bindings/LuaUDPEndpoint.h11
-rw-r--r--src/Bindings/ManualBindings.cpp52
-rw-r--r--src/Bindings/ManualBindings_Network.cpp121
-rw-r--r--src/OSSupport/IPLookup.cpp8
13 files changed, 464 insertions, 464 deletions
diff --git a/src/Bindings/LuaNameLookup.cpp b/src/Bindings/LuaNameLookup.cpp
index 3cbdbb5cf..3f55e7bc8 100644
--- a/src/Bindings/LuaNameLookup.cpp
+++ b/src/Bindings/LuaNameLookup.cpp
@@ -10,9 +10,8 @@
-cLuaNameLookup::cLuaNameLookup(const AString & a_Query, cPluginLua & a_Plugin, int a_CallbacksTableStackPos):
- m_Plugin(a_Plugin),
- m_Callbacks(cPluginLua::cOperation(a_Plugin)(), a_CallbacksTableStackPos),
+cLuaNameLookup::cLuaNameLookup(const AString & a_Query, cLuaState::cTableRefPtr && a_Callbacks):
+ m_Callbacks(std::move(a_Callbacks)),
m_Query(a_Query)
{
}
@@ -23,20 +22,7 @@ cLuaNameLookup::cLuaNameLookup(const AString & a_Query, cPluginLua & a_Plugin, i
void cLuaNameLookup::OnNameResolved(const AString & a_Name, const AString & a_IP)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
- // Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnNameResolved"), a_Name, a_IP))
- {
- LOGINFO("cNetwork name lookup OnNameResolved callback failed in plugin %s looking up %s. %s resolves to %s.",
- m_Plugin.GetName().c_str(), m_Query.c_str(), a_Name.c_str(), a_IP.c_str()
- );
- }
+ m_Callbacks->CallTableFn("OnNameResolved", a_Name, a_IP);
}
@@ -45,20 +31,7 @@ void cLuaNameLookup::OnNameResolved(const AString & a_Name, const AString & a_IP
void cLuaNameLookup::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
- // Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnError"), m_Query, a_ErrorCode, a_ErrorMsg))
- {
- LOGINFO("cNetwork name lookup OnError callback failed in plugin %s looking up %s. The error is %d (%s)",
- m_Plugin.GetName().c_str(), m_Query.c_str(), a_ErrorCode, a_ErrorMsg.c_str()
- );
- }
+ m_Callbacks->CallTableFn("OnError", m_Query, a_ErrorCode, a_ErrorMsg);
}
@@ -67,20 +40,7 @@ void cLuaNameLookup::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
void cLuaNameLookup::OnFinished(void)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
- // Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnFinished"), m_Query))
- {
- LOGINFO("cNetwork name lookup OnFinished callback failed in plugin %s, looking up %s.",
- m_Plugin.GetName().c_str(), m_Query.c_str()
- );
- }
+ m_Callbacks->CallTableFn("OnFinished", m_Query);
}
diff --git a/src/Bindings/LuaNameLookup.h b/src/Bindings/LuaNameLookup.h
index e4cdb9f53..0eef108c8 100644
--- a/src/Bindings/LuaNameLookup.h
+++ b/src/Bindings/LuaNameLookup.h
@@ -10,7 +10,7 @@
#pragma once
#include "../OSSupport/Network.h"
-#include "PluginLua.h"
+#include "LuaState.h"
@@ -21,15 +21,12 @@ class cLuaNameLookup:
{
public:
/** Creates a new instance of the lookup callbacks for the specified query,
- attached to the specified lua plugin and wrapping the callbacks that are in a table at the specified stack pos. */
- cLuaNameLookup(const AString & a_Query, cPluginLua & a_Plugin, int a_CallbacksTableStackPos);
+ using the callbacks that are in the specified table. */
+ cLuaNameLookup(const AString & a_Query, cLuaState::cTableRefPtr && a_Callbacks);
protected:
- /** The plugin for which the query is created. */
- cPluginLua & m_Plugin;
-
/** The Lua table that holds the callbacks to be invoked. */
- cLuaState::cRef m_Callbacks;
+ cLuaState::cTableRefPtr m_Callbacks;
/** The query used to start the lookup (either hostname or IP). */
AString m_Query;
diff --git a/src/Bindings/LuaServerHandle.cpp b/src/Bindings/LuaServerHandle.cpp
index 9cc8ad350..d32b8fe03 100644
--- a/src/Bindings/LuaServerHandle.cpp
+++ b/src/Bindings/LuaServerHandle.cpp
@@ -12,9 +12,8 @@
-cLuaServerHandle::cLuaServerHandle(UInt16 a_Port, cPluginLua & a_Plugin, int a_CallbacksTableStackPos):
- m_Plugin(a_Plugin),
- m_Callbacks(cPluginLua::cOperation(a_Plugin)(), a_CallbacksTableStackPos),
+cLuaServerHandle::cLuaServerHandle(UInt16 a_Port, cLuaState::cTableRefPtr && a_Callbacks):
+ m_Callbacks(std::move(a_Callbacks)),
m_Port(a_Port)
{
}
@@ -127,28 +126,19 @@ void cLuaServerHandle::Release(void)
cTCPLink::cCallbacksPtr cLuaServerHandle::OnIncomingConnection(const AString & a_RemoteIPAddress, UInt16 a_RemotePort)
{
- // If not valid anymore, drop the connection:
- if (!m_Callbacks.IsValid())
- {
- return nullptr;
- }
-
// Ask the plugin for link callbacks:
- cPluginLua::cOperation Op(m_Plugin);
- cLuaState::cRef LinkCallbacks;
+ cLuaState::cTableRefPtr LinkCallbacks;
if (
- !Op().Call(cLuaState::cTableRef(m_Callbacks, "OnIncomingConnection"), a_RemoteIPAddress, a_RemotePort, m_Port, cLuaState::Return, LinkCallbacks) ||
- !LinkCallbacks.IsValid()
+ !m_Callbacks->CallTableFn("OnIncomingConnection", a_RemoteIPAddress, a_RemotePort, m_Port, cLuaState::Return, LinkCallbacks) ||
+ !LinkCallbacks->IsValid()
)
{
- LOGINFO("cNetwork server (port %d) OnIncomingConnection callback failed in plugin %s. Dropping connection.",
- m_Port, m_Plugin.GetName().c_str()
- );
+ LOGINFO("cNetwork server (port %d) OnIncomingConnection callback failed. Dropping connection.", m_Port);
return nullptr;
}
// Create the link wrapper to use with the callbacks:
- auto res = std::make_shared<cLuaTCPLink>(m_Plugin, std::move(LinkCallbacks), m_Self);
+ auto res = std::make_shared<cLuaTCPLink>(std::move(LinkCallbacks), m_Self);
// Add the link to the list of our connections:
cCSLock Lock(m_CSConnections);
@@ -163,21 +153,8 @@ cTCPLink::cCallbacksPtr cLuaServerHandle::OnIncomingConnection(const AString & a
void cLuaServerHandle::OnAccepted(cTCPLink & a_Link)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
// Notify the plugin:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnAccepted"), static_cast<cLuaTCPLink *>(a_Link.GetCallbacks().get())))
- {
- LOGINFO("cNetwork server (port %d) OnAccepted callback failed in plugin %s, connection to %s:%d.",
- m_Port, m_Plugin.GetName().c_str(), a_Link.GetRemoteIP().c_str(), a_Link.GetRemotePort()
- );
- return;
- }
+ m_Callbacks->CallTableFn("OnAccepted", static_cast<cLuaTCPLink *>(a_Link.GetCallbacks().get()));
}
@@ -186,21 +163,8 @@ void cLuaServerHandle::OnAccepted(cTCPLink & a_Link)
void cLuaServerHandle::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
// Notify the plugin:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnError"), a_ErrorCode, a_ErrorMsg))
- {
- LOGINFO("cNetwork server (port %d) OnError callback failed in plugin %s. The error is %d (%s).",
- m_Port, m_Plugin.GetName().c_str(), a_ErrorCode, a_ErrorMsg.c_str()
- );
- return;
- }
+ m_Callbacks->CallTableFn("OnError", a_ErrorCode, a_ErrorMsg);
}
diff --git a/src/Bindings/LuaServerHandle.h b/src/Bindings/LuaServerHandle.h
index 9325bca3e..7632669ff 100644
--- a/src/Bindings/LuaServerHandle.h
+++ b/src/Bindings/LuaServerHandle.h
@@ -10,7 +10,7 @@
#pragma once
#include "../OSSupport/Network.h"
-#include "PluginLua.h"
+#include "LuaState.h"
@@ -31,8 +31,8 @@ class cLuaServerHandle:
{
public:
/** Creates a new instance of the server handle,
- attached to the specified lua plugin and wrapping the (listen-) callbacks that are in a table at the specified stack pos. */
- cLuaServerHandle(UInt16 a_Port, cPluginLua & a_Plugin, int a_CallbacksTableStackPos);
+ wrapping the (listen-) callbacks that are in the specified table. */
+ cLuaServerHandle(UInt16 a_Port, cLuaState::cTableRefPtr && a_Callbacks);
~cLuaServerHandle();
@@ -54,11 +54,8 @@ public:
void Release(void);
protected:
- /** The plugin for which the server is created. */
- cPluginLua & m_Plugin;
-
/** The Lua table that holds the callbacks to be invoked. */
- cLuaState::cRef m_Callbacks;
+ cLuaState::cTableRefPtr m_Callbacks;
/** The port on which the server is listening.
Used mainly for better error reporting. */
diff --git a/src/Bindings/LuaState.cpp b/src/Bindings/LuaState.cpp
index bc9447cc2..e6a94091e 100644
--- a/src/Bindings/LuaState.cpp
+++ b/src/Bindings/LuaState.cpp
@@ -122,9 +122,9 @@ cLuaStateTracker & cLuaStateTracker::Get(void)
////////////////////////////////////////////////////////////////////////////////
-// cLuaState::cCallback:
+// cLuaState::cTrackedRef:
-cLuaState::cCallback::cCallback(void):
+cLuaState::cTrackedRef::cTrackedRef(void):
m_CS(nullptr)
{
}
@@ -133,20 +133,14 @@ cLuaState::cCallback::cCallback(void):
-bool cLuaState::cCallback::RefStack(cLuaState & a_LuaState, int a_StackPos)
+bool cLuaState::cTrackedRef::RefStack(cLuaState & a_LuaState, int a_StackPos)
{
- // Check if the stack contains a function:
- if (!lua_isfunction(a_LuaState, a_StackPos))
- {
- return false;
- }
-
// Clear any previous callback:
Clear();
// Add self to LuaState's callback-tracking:
auto canonState = a_LuaState.QueryCanonLuaState();
- canonState->TrackCallback(*this);
+ canonState->TrackRef(*this);
// Store the new callback:
m_CS = &(canonState->m_CS);
@@ -158,9 +152,9 @@ bool cLuaState::cCallback::RefStack(cLuaState & a_LuaState, int a_StackPos)
-void cLuaState::cCallback::Clear(void)
+void cLuaState::cTrackedRef::Clear(void)
{
- // Free the callback reference:
+ // Free the reference:
lua_State * luaState = nullptr;
{
auto cs = m_CS;
@@ -175,20 +169,21 @@ void cLuaState::cCallback::Clear(void)
m_Ref.UnRef();
}
}
+ m_CS = nullptr;
// Remove from LuaState's callback-tracking:
if (luaState == nullptr)
{
return;
}
- cLuaState(luaState).UntrackCallback(*this);
+ cLuaState(luaState).UntrackRef(*this);
}
-bool cLuaState::cCallback::IsValid(void)
+bool cLuaState::cTrackedRef::IsValid(void)
{
auto cs = m_CS;
if (cs == nullptr)
@@ -203,7 +198,7 @@ bool cLuaState::cCallback::IsValid(void)
-bool cLuaState::cCallback::IsSameLuaState(cLuaState & a_LuaState)
+bool cLuaState::cTrackedRef::IsSameLuaState(cLuaState & a_LuaState)
{
auto cs = m_CS;
if (cs == nullptr)
@@ -227,7 +222,7 @@ bool cLuaState::cCallback::IsSameLuaState(cLuaState & a_LuaState)
-void cLuaState::cCallback::Invalidate(void)
+void cLuaState::cTrackedRef::Invalidate(void)
{
auto cs = m_CS;
if (cs == nullptr)
@@ -244,6 +239,43 @@ void cLuaState::cCallback::Invalidate(void)
return;
}
m_Ref.UnRef();
+ m_CS = nullptr;
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cLuaState::cCallback:
+
+bool cLuaState::cCallback::RefStack(cLuaState & a_LuaState, int a_StackPos)
+{
+ // Check if the stack contains a function:
+ if (!lua_isfunction(a_LuaState, a_StackPos))
+ {
+ return false;
+ }
+
+ return Super::RefStack(a_LuaState, a_StackPos);
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cLuaState::cTableRef:
+
+bool cLuaState::cTableRef::RefStack(cLuaState & a_LuaState, int a_StackPos)
+{
+ // Check if the stack contains a table:
+ if (!lua_istable(a_LuaState, a_StackPos))
+ {
+ return false;
+ }
+
+ return Super::RefStack(a_LuaState, a_StackPos);
}
@@ -365,12 +397,12 @@ void cLuaState::Close(void)
return;
}
- // Invalidate all callbacks:
+ // Invalidate all tracked refs:
{
- cCSLock Lock(m_CSTrackedCallbacks);
- for (auto & c: m_TrackedCallbacks)
+ cCSLock Lock(m_CSTrackedRefs);
+ for (auto & r: m_TrackedRefs)
{
- c->Invalidate();
+ r->Invalidate();
}
}
@@ -592,22 +624,28 @@ bool cLuaState::PushFunction(const cRef & a_FnRef)
-bool cLuaState::PushFunction(const cTableRef & a_TableRef)
+bool cLuaState::PushFunction(const cRef & a_TableRef, const char * a_FnName)
{
ASSERT(IsValid());
ASSERT(m_NumCurrentFunctionArgs == -1); // If not, there's already something pushed onto the stack
+ if (!a_TableRef.IsValid())
+ {
+ return false;
+ }
+
// Push the error handler for lua_pcall()
lua_pushcfunction(m_LuaState, &ReportFnCallErrors);
- lua_rawgeti(m_LuaState, LUA_REGISTRYINDEX, a_TableRef.GetTableRef()); // Get the table ref
+ // Get the function from the table:
+ lua_rawgeti(m_LuaState, LUA_REGISTRYINDEX, static_cast<int>(a_TableRef));
if (!lua_istable(m_LuaState, -1))
{
// Not a table, bail out
lua_pop(m_LuaState, 2);
return false;
}
- lua_getfield(m_LuaState, -1, a_TableRef.GetFnName());
+ lua_getfield(m_LuaState, -1, a_FnName);
if (lua_isnil(m_LuaState, -1) || !lua_isfunction(m_LuaState, -1))
{
// Not a valid function, bail out
@@ -618,7 +656,7 @@ bool cLuaState::PushFunction(const cTableRef & a_TableRef)
// Pop the table off the stack:
lua_remove(m_LuaState, -2);
- Printf(m_CurrentFunctionName, "<table-callback %s>", a_TableRef.GetFnName());
+ Printf(m_CurrentFunctionName, "<table-callback %s>", a_FnName);
m_NumCurrentFunctionArgs = 0;
return true;
}
@@ -1061,6 +1099,28 @@ bool cLuaState::GetStackValue(int a_StackPos, cCallbackSharedPtr & a_Callback)
+bool cLuaState::GetStackValue(int a_StackPos, cTableRef & a_TableRef)
+{
+ return a_TableRef.RefStack(*this, a_StackPos);
+}
+
+
+
+
+
+bool cLuaState::GetStackValue(int a_StackPos, cTableRefPtr & a_TableRef)
+{
+ if (a_TableRef == nullptr)
+ {
+ a_TableRef = cpp14::make_unique<cTableRef>();
+ }
+ return a_TableRef->RefStack(*this, a_StackPos);
+}
+
+
+
+
+
bool cLuaState::GetStackValue(int a_StackPos, cPluginManager::CommandResult & a_Result)
{
if (lua_isnumber(m_LuaState, a_StackPos))
@@ -1085,6 +1145,41 @@ bool cLuaState::GetStackValue(int a_StackPos, cRef & a_Ref)
+bool cLuaState::GetStackValue(int a_StackPos, cTrackedRef & a_Ref)
+{
+ return a_Ref.RefStack(*this, a_StackPos);
+}
+
+
+
+
+
+bool cLuaState::GetStackValue(int a_StackPos, cTrackedRefPtr & a_Ref)
+{
+ if (a_Ref == nullptr)
+ {
+ a_Ref = cpp14::make_unique<cTrackedRef>();
+ }
+ return a_Ref->RefStack(*this, a_StackPos);
+}
+
+
+
+
+
+bool cLuaState::GetStackValue(int a_StackPos, cTrackedRefSharedPtr & a_Ref)
+{
+ if (a_Ref == nullptr)
+ {
+ a_Ref = std::make_shared<cTrackedRef>();
+ }
+ return a_Ref->RefStack(*this, a_StackPos);
+}
+
+
+
+
+
bool cLuaState::GetStackValue(int a_StackPos, double & a_ReturnedVal)
{
if (lua_isnumber(m_LuaState, a_StackPos))
@@ -1930,7 +2025,7 @@ int cLuaState::BreakIntoDebugger(lua_State * a_LuaState)
-void cLuaState::TrackCallback(cCallback & a_Callback)
+void cLuaState::TrackRef(cTrackedRef & a_Ref)
{
// Get the CanonLuaState global from Lua:
auto canonState = QueryCanonLuaState();
@@ -1941,15 +2036,15 @@ void cLuaState::TrackCallback(cCallback & a_Callback)
}
// Add the callback:
- cCSLock Lock(canonState->m_CSTrackedCallbacks);
- canonState->m_TrackedCallbacks.push_back(&a_Callback);
+ cCSLock Lock(canonState->m_CSTrackedRefs);
+ canonState->m_TrackedRefs.push_back(&a_Ref);
}
-void cLuaState::UntrackCallback(cCallback & a_Callback)
+void cLuaState::UntrackRef(cTrackedRef & a_Ref)
{
// Get the CanonLuaState global from Lua:
auto canonState = QueryCanonLuaState();
@@ -1960,12 +2055,12 @@ void cLuaState::UntrackCallback(cCallback & a_Callback)
}
// Remove the callback:
- cCSLock Lock(canonState->m_CSTrackedCallbacks);
- auto & trackedCallbacks = canonState->m_TrackedCallbacks;
- trackedCallbacks.erase(std::remove_if(trackedCallbacks.begin(), trackedCallbacks.end(),
- [&a_Callback](cCallback * a_StoredCallback)
+ cCSLock Lock(canonState->m_CSTrackedRefs);
+ auto & trackedRefs = canonState->m_TrackedRefs;
+ trackedRefs.erase(std::remove_if(trackedRefs.begin(), trackedRefs.end(),
+ [&a_Ref](cTrackedRef * a_StoredRef)
{
- return (a_StoredCallback == &a_Callback);
+ return (a_StoredRef == &a_Ref);
}
));
}
diff --git a/src/Bindings/LuaState.h b/src/Bindings/LuaState.h
index c34feca9d..bc88fbf1b 100644
--- a/src/Bindings/LuaState.h
+++ b/src/Bindings/LuaState.h
@@ -120,46 +120,84 @@ public:
} ;
- /** Used for calling functions stored in a reference-stored table */
- class cTableRef
+ /** Represents a reference to a Lua object that has a tracked lifetime -
+ - when the Lua state to which it belongs is closed, the object is kept alive, but invalidated.
+ Is thread-safe and unload-safe.
+ To receive the cTrackedRef instance from the Lua side, use RefStack() or (better) cLuaState::GetStackValue().
+ Note that instances of this class are tracked in the canon LuaState instance, so that
+ they can be invalidated when the LuaState is unloaded; due to multithreading issues they can only be tracked
+ by-ptr, which has an unfortunate effect of disabling the copy and move constructors. */
+ class cTrackedRef
{
- int m_TableRef;
- const char * m_FnName;
+ friend class ::cLuaState;
public:
- cTableRef(int a_TableRef, const char * a_FnName) :
- m_TableRef(a_TableRef),
- m_FnName(a_FnName)
- {
- }
+ /** Creates an unbound ref instance. */
+ cTrackedRef(void);
- cTableRef(const cRef & a_TableRef, const char * a_FnName) :
- m_TableRef(static_cast<int>(a_TableRef)),
- m_FnName(a_FnName)
+ ~cTrackedRef()
{
+ Clear();
}
- int GetTableRef(void) const { return m_TableRef; }
- const char * GetFnName(void) const { return m_FnName; }
- } ;
+ /** Set the contained reference to the object at the specified Lua state's stack position.
+ If another reference has been previously contained, it is freed first. */
+ bool RefStack(cLuaState & a_LuaState, int a_StackPos);
+
+ /** Frees the contained reference, if any. */
+ void Clear(void);
+
+ /** Returns true if the contained reference is valid. */
+ bool IsValid(void);
+
+ /** Returns true if the reference resides in the specified Lua state.
+ Internally, compares the reference's canon Lua state. */
+ bool IsSameLuaState(cLuaState & a_LuaState);
+
+ protected:
+ friend class cLuaState;
+
+ /** The mutex protecting m_Ref against multithreaded access */
+ cCriticalSection * m_CS;
+
+ /** Reference to the Lua callback */
+ cRef m_Ref;
+
+ /** Invalidates the callback, without untracking it from the cLuaState.
+ Called only from cLuaState when closing the Lua state. */
+ void Invalidate(void);
+
+ /** Returns the internal reference.
+ Only to be used when the cLuaState's CS is held and the cLuaState is known to be valid. */
+ cRef & GetRef() { return m_Ref; }
+
+ /** This class cannot be copied, because it is tracked in the LuaState by-ptr.
+ Use a smart pointer for a copyable object. */
+ cTrackedRef(const cTrackedRef &) = delete;
- /** Represents a callback to Lua that C++ code can call.
+ /** This class cannot be moved, because it is tracked in the LuaState by-ptr.
+ Use a smart pointer for a copyable object. */
+ cTrackedRef(cTrackedRef &&) = delete;
+ };
+ typedef UniquePtr<cTrackedRef> cTrackedRefPtr;
+ typedef SharedPtr<cTrackedRef> cTrackedRefSharedPtr;
+
+
+ /** Represents a stored callback to Lua that C++ code can call.
Is thread-safe and unload-safe.
When the Lua state is unloaded, the callback returns an error instead of calling into non-existent code.
To receive the callback instance from the Lua side, use RefStack() or (better) cLuaState::GetStackValue()
with a cCallbackPtr. Note that instances of this class are tracked in the canon LuaState instance, so that
they can be invalidated when the LuaState is unloaded; due to multithreading issues they can only be tracked
by-ptr, which has an unfortunate effect of disabling the copy and move constructors. */
- class cCallback
+ class cCallback:
+ public cTrackedRef
{
+ typedef cTrackedRef Super;
+
public:
- /** Creates an unbound callback instance. */
- cCallback(void);
- ~cCallback()
- {
- Clear();
- }
+ cCallback(void) {}
/** Calls the Lua callback, if still available.
Returns true if callback has been called.
@@ -181,32 +219,11 @@ public:
}
/** Set the contained callback to the function in the specified Lua state's stack position.
- If a callback has been previously contained, it is freed first. */
+ If a callback has been previously contained, it is unreferenced first.
+ Returns true on success, false on failure (not a function at the specified stack pos). */
bool RefStack(cLuaState & a_LuaState, int a_StackPos);
- /** Frees the contained callback, if any. */
- void Clear(void);
-
- /** Returns true if the contained callback is valid. */
- bool IsValid(void);
-
- /** Returns true if the callback resides in the specified Lua state.
- Internally, compares the callback's canon Lua state. */
- bool IsSameLuaState(cLuaState & a_LuaState);
-
protected:
- friend class cLuaState;
-
- /** The mutex protecting m_Ref against multithreaded access */
- cCriticalSection * m_CS;
-
- /** Reference to the Lua callback */
- cRef m_Ref;
-
-
- /** Invalidates the callback, without untracking it from the cLuaState.
- Called only from cLuaState when closing the Lua state. */
- void Invalidate(void);
/** This class cannot be copied, because it is tracked in the LuaState by-ptr.
Use cCallbackPtr for a copyable object. */
@@ -220,6 +237,47 @@ public:
typedef SharedPtr<cCallback> cCallbackSharedPtr;
+ /** Represents a stored Lua table with callback functions that C++ code can call.
+ Is thread-safe and unload-safe.
+ When Lua state is unloaded, the CallFn() will return failure instead of calling into non-existent code.
+ To receive the callback instance from the Lua side, use RefStack() or (better) cLuaState::GetStackValue()
+ with a cCallbackPtr. Note that instances of this class are tracked in the canon LuaState instance, so that
+ they can be invalidated when the LuaState is unloaded; due to multithreading issues they can only be tracked
+ by-ptr, which has an unfortunate effect of disabling the copy and move constructors. */
+ class cTableRef:
+ public cTrackedRef
+ {
+ typedef cTrackedRef Super;
+ public:
+ cTableRef(void) {}
+
+ /** Calls the Lua function stored under the specified name in the referenced table, if still available.
+ Returns true if callback has been called.
+ Returns false if the Lua state isn't valid anymore, or the function doesn't exist. */
+ template <typename... Args>
+ bool CallTableFn(const char * a_FnName, Args &&... args)
+ {
+ auto cs = m_CS;
+ if (cs == nullptr)
+ {
+ return false;
+ }
+ cCSLock Lock(*cs);
+ if (!m_Ref.IsValid())
+ {
+ return false;
+ }
+ return cLuaState(m_Ref.GetLuaState()).CallTableFn(m_Ref, a_FnName, std::forward<Args>(args)...);
+ }
+
+ /** Set the contained reference to the table in the specified Lua state's stack position.
+ If another table has been previously contained, it is unreferenced first.
+ Returns true on success, false on failure (not a table at the specified stack pos). */
+ bool RefStack(cLuaState & a_LuaState, int a_StackPos);
+ };
+ typedef UniquePtr<cTableRef> cTableRefPtr;
+
+
/** A dummy class that's used only to delimit function args from return values for cLuaState::Call() */
class cRet
{
@@ -381,8 +439,13 @@ public:
bool GetStackValue(int a_StackPos, cCallback & a_Callback);
bool GetStackValue(int a_StackPos, cCallbackPtr & a_Callback);
bool GetStackValue(int a_StackPos, cCallbackSharedPtr & a_Callback);
+ bool GetStackValue(int a_StackPos, cTableRef & a_TableRef);
+ bool GetStackValue(int a_StackPos, cTableRefPtr & a_TableRef);
bool GetStackValue(int a_StackPos, cPluginManager::CommandResult & a_Result);
bool GetStackValue(int a_StackPos, cRef & a_Ref);
+ bool GetStackValue(int a_StackPos, cTrackedRef & a_Ref);
+ bool GetStackValue(int a_StackPos, cTrackedRefPtr & a_Ref);
+ bool GetStackValue(int a_StackPos, cTrackedRefSharedPtr & a_Ref);
bool GetStackValue(int a_StackPos, double & a_Value);
bool GetStackValue(int a_StackPos, eBlockFace & a_Value);
bool GetStackValue(int a_StackPos, eWeather & a_Value);
@@ -583,15 +646,30 @@ protected:
/** Number of arguments currently pushed (for the Push / Call chain) */
int m_NumCurrentFunctionArgs;
- /** The tracked callbacks.
- This object will invalidate all of these when it is about to be closed.
- Protected against multithreaded access by m_CSTrackedCallbacks. */
- std::vector<cCallback *> m_TrackedCallbacks;
+ /** The tracked references.
+ The cLuaState will invalidate all of these when it is about to be closed.
+ Protected against multithreaded access by m_CSTrackedRefs. */
+ std::vector<cTrackedRef *> m_TrackedRefs;
- /** Protects m_TrackedTallbacks against multithreaded access. */
- cCriticalSection m_CSTrackedCallbacks;
+ /** Protects m_TrackedRefs against multithreaded access. */
+ cCriticalSection m_CSTrackedRefs;
+ /** Call the Lua function specified by name in the table stored as a reference.
+ Returns true if call succeeded, false if there was an error (not a table ref, function name not found).
+ A special param of cRet & signifies the end of param list and the start of return values.
+ Example call: CallTableFn(TableRef, "FnName", Param1, Param2, Param3, cLuaState::Return, Ret1, Ret2) */
+ template <typename... Args>
+ bool CallTableFn(const cRef & a_TableRef, const char * a_FnName, Args &&... args)
+ {
+ if (!PushFunction(a_TableRef, a_FnName))
+ {
+ // Pushing the function failed
+ return false;
+ }
+ return PushCallPop(std::forward<Args>(args)...);
+ }
+
/** Variadic template terminator: If there's nothing more to push / pop, just call the function.
Note that there are no return values either, because those are prefixed by a cRet value, so the arg list is never empty. */
bool PushCallPop(void)
@@ -646,10 +724,9 @@ protected:
*/
bool PushFunction(const cRef & a_FnRef);
- /** Pushes a function that is stored in a referenced table by name
- Returns true if successful. Logs a warning on failure
- */
- bool PushFunction(const cTableRef & a_TableRef);
+ /** Pushes a function that is stored under the specified name in a table that has been saved as a reference.
+ Returns true if successful. */
+ bool PushFunction(const cRef & a_TableRef, const char * a_FnName);
/** Pushes a usertype of the specified class type onto the stack */
// void PushUserType(void * a_Object, const char * a_Type);
@@ -667,13 +744,13 @@ protected:
/** Tries to break into the MobDebug debugger, if it is installed. */
static int BreakIntoDebugger(lua_State * a_LuaState);
- /** Adds the specified callback to tracking.
- The callback will be invalidated when this Lua state is about to be closed. */
- void TrackCallback(cCallback & a_Callback);
+ /** Adds the specified reference to tracking.
+ The reference will be invalidated when this Lua state is about to be closed. */
+ void TrackRef(cTrackedRef & a_Ref);
- /** Removes the specified callback from tracking.
- The callback will no longer be invalidated when this Lua state is about to be closed. */
- void UntrackCallback(cCallback & a_Callback);
+ /** Removes the specified reference from tracking.
+ The reference will no longer be invalidated when this Lua state is about to be closed. */
+ void UntrackRef(cTrackedRef & a_Ref);
} ;
diff --git a/src/Bindings/LuaTCPLink.cpp b/src/Bindings/LuaTCPLink.cpp
index 4b04a1c02..466240a7d 100644
--- a/src/Bindings/LuaTCPLink.cpp
+++ b/src/Bindings/LuaTCPLink.cpp
@@ -11,35 +11,19 @@
-cLuaTCPLink::cLuaTCPLink(cPluginLua & a_Plugin, int a_CallbacksTableStackPos):
- m_Plugin(a_Plugin),
- m_Callbacks(cPluginLua::cOperation(a_Plugin)(), a_CallbacksTableStackPos)
+cLuaTCPLink::cLuaTCPLink(cLuaState::cTableRefPtr && a_Callbacks):
+ m_Callbacks(std::move(a_Callbacks))
{
- // Warn if the callbacks aren't valid:
- if (!m_Callbacks.IsValid())
- {
- LOGWARNING("cTCPLink in plugin %s: callbacks could not be retrieved", m_Plugin.GetName().c_str());
- cPluginLua::cOperation Op(m_Plugin);
- Op().LogStackTrace();
- }
}
-cLuaTCPLink::cLuaTCPLink(cPluginLua & a_Plugin, cLuaState::cRef && a_CallbacksTableRef, cLuaServerHandleWPtr a_ServerHandle):
- m_Plugin(a_Plugin),
- m_Callbacks(std::move(a_CallbacksTableRef)),
+cLuaTCPLink::cLuaTCPLink(cLuaState::cTableRefPtr && a_Callbacks, cLuaServerHandleWPtr a_ServerHandle):
+ m_Callbacks(std::move(a_Callbacks)),
m_Server(std::move(a_ServerHandle))
{
- // Warn if the callbacks aren't valid:
- if (!m_Callbacks.IsValid())
- {
- LOGWARNING("cTCPLink in plugin %s: callbacks could not be retrieved", m_Plugin.GetName().c_str());
- cPluginLua::cOperation Op(m_Plugin);
- Op().LogStackTrace();
- }
}
@@ -49,10 +33,10 @@ cLuaTCPLink::cLuaTCPLink(cPluginLua & a_Plugin, cLuaState::cRef && a_CallbacksTa
cLuaTCPLink::~cLuaTCPLink()
{
// If the link is still open, close it:
- cTCPLinkPtr Link = m_Link;
- if (Link != nullptr)
+ auto link = m_Link;
+ if (link != nullptr)
{
- Link->Close();
+ link->Close();
}
Terminated();
@@ -72,14 +56,14 @@ bool cLuaTCPLink::Send(const AString & a_Data)
}
// Safely grab a copy of the link:
- cTCPLinkPtr Link = m_Link;
- if (Link == nullptr)
+ auto link = m_Link;
+ if (link == nullptr)
{
return false;
}
// Send the data:
- return Link->Send(a_Data);
+ return link->Send(a_Data);
}
@@ -89,14 +73,14 @@ bool cLuaTCPLink::Send(const AString & a_Data)
AString cLuaTCPLink::GetLocalIP(void) const
{
// Safely grab a copy of the link:
- cTCPLinkPtr Link = m_Link;
- if (Link == nullptr)
+ auto link = m_Link;
+ if (link == nullptr)
{
return "";
}
// Get the IP address:
- return Link->GetLocalIP();
+ return link->GetLocalIP();
}
@@ -106,14 +90,14 @@ AString cLuaTCPLink::GetLocalIP(void) const
UInt16 cLuaTCPLink::GetLocalPort(void) const
{
// Safely grab a copy of the link:
- cTCPLinkPtr Link = m_Link;
- if (Link == nullptr)
+ auto link = m_Link;
+ if (link == nullptr)
{
return 0;
}
// Get the port:
- return Link->GetLocalPort();
+ return link->GetLocalPort();
}
@@ -123,14 +107,14 @@ UInt16 cLuaTCPLink::GetLocalPort(void) const
AString cLuaTCPLink::GetRemoteIP(void) const
{
// Safely grab a copy of the link:
- cTCPLinkPtr Link = m_Link;
- if (Link == nullptr)
+ cTCPLinkPtr link = m_Link;
+ if (link == nullptr)
{
return "";
}
// Get the IP address:
- return Link->GetRemoteIP();
+ return link->GetRemoteIP();
}
@@ -140,14 +124,14 @@ AString cLuaTCPLink::GetRemoteIP(void) const
UInt16 cLuaTCPLink::GetRemotePort(void) const
{
// Safely grab a copy of the link:
- cTCPLinkPtr Link = m_Link;
- if (Link == nullptr)
+ cTCPLinkPtr link = m_Link;
+ if (link == nullptr)
{
return 0;
}
// Get the port:
- return Link->GetRemotePort();
+ return link->GetRemotePort();
}
@@ -157,8 +141,8 @@ UInt16 cLuaTCPLink::GetRemotePort(void) const
void cLuaTCPLink::Shutdown(void)
{
// Safely grab a copy of the link and shut it down:
- cTCPLinkPtr Link = m_Link;
- if (Link != nullptr)
+ cTCPLinkPtr link = m_Link;
+ if (link != nullptr)
{
if (m_SslContext != nullptr)
{
@@ -166,7 +150,7 @@ void cLuaTCPLink::Shutdown(void)
m_SslContext->ResetSelf();
m_SslContext.reset();
}
- Link->Shutdown();
+ link->Shutdown();
}
}
@@ -177,8 +161,8 @@ void cLuaTCPLink::Shutdown(void)
void cLuaTCPLink::Close(void)
{
// If the link is still open, close it:
- cTCPLinkPtr Link = m_Link;
- if (Link != nullptr)
+ cTCPLinkPtr link = m_Link;
+ if (link != nullptr)
{
if (m_SslContext != nullptr)
{
@@ -186,7 +170,7 @@ void cLuaTCPLink::Close(void)
m_SslContext->ResetSelf();
m_SslContext.reset();
}
- Link->Close();
+ link->Close();
}
Terminated();
@@ -303,9 +287,9 @@ AString cLuaTCPLink::StartTLSServer(
void cLuaTCPLink::Terminated(void)
{
// Disable the callbacks:
- if (m_Callbacks.IsValid())
+ if (m_Callbacks->IsValid())
{
- m_Callbacks.UnRef();
+ m_Callbacks->Clear();
}
// If the managing server is still alive, let it know we're terminating:
@@ -317,10 +301,10 @@ void cLuaTCPLink::Terminated(void)
// If the link is still open, close it:
{
- cTCPLinkPtr Link = m_Link;
- if (Link != nullptr)
+ auto link= m_Link;
+ if (link != nullptr)
{
- Link->Close();
+ link->Close();
m_Link.reset();
}
}
@@ -335,18 +319,8 @@ void cLuaTCPLink::Terminated(void)
void cLuaTCPLink::ReceivedCleartextData(const char * a_Data, size_t a_NumBytes)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
// Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnReceivedData"), this, AString(a_Data, a_NumBytes)))
- {
- LOGINFO("cTCPLink OnReceivedData callback failed in plugin %s.", m_Plugin.GetName().c_str());
- }
+ m_Callbacks->CallTableFn("OnReceivedData", this, AString(a_Data, a_NumBytes));
}
@@ -355,18 +329,8 @@ void cLuaTCPLink::ReceivedCleartextData(const char * a_Data, size_t a_NumBytes)
void cLuaTCPLink::OnConnected(cTCPLink & a_Link)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
// Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnConnected"), this))
- {
- LOGINFO("cTCPLink OnConnected() callback failed in plugin %s.", m_Plugin.GetName().c_str());
- }
+ m_Callbacks->CallTableFn("OnConnected", this);
}
@@ -375,21 +339,10 @@ void cLuaTCPLink::OnConnected(cTCPLink & a_Link)
void cLuaTCPLink::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
// Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnError"), this, a_ErrorCode, a_ErrorMsg))
- {
- LOGINFO("cTCPLink OnError() callback failed in plugin %s; the link error is %d (%s).",
- m_Plugin.GetName().c_str(), a_ErrorCode, a_ErrorMsg.c_str()
- );
- }
+ m_Callbacks->CallTableFn("OnError", this, a_ErrorCode, a_ErrorMsg);
+ // Terminate all processing on the link:
Terminated();
}
@@ -409,12 +362,6 @@ void cLuaTCPLink::OnLinkCreated(cTCPLinkPtr a_Link)
void cLuaTCPLink::OnReceivedData(const char * a_Data, size_t a_Length)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
// If we're running in SSL mode, put the data into the SSL decryptor:
auto sslContext = m_SslContext;
if (sslContext != nullptr)
@@ -424,11 +371,7 @@ void cLuaTCPLink::OnReceivedData(const char * a_Data, size_t a_Length)
}
// Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnReceivedData"), this, AString(a_Data, a_Length)))
- {
- LOGINFO("cTCPLink OnReceivedData callback failed in plugin %s.", m_Plugin.GetName().c_str());
- }
+ m_Callbacks->CallTableFn("OnReceivedData", this, AString(a_Data, a_Length));
}
@@ -437,12 +380,6 @@ void cLuaTCPLink::OnReceivedData(const char * a_Data, size_t a_Length)
void cLuaTCPLink::OnRemoteClosed(void)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
// If running in SSL mode and there's data left in the SSL contect, report it:
auto sslContext = m_SslContext;
if (sslContext != nullptr)
@@ -451,12 +388,9 @@ void cLuaTCPLink::OnRemoteClosed(void)
}
// Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnRemoteClosed"), this))
- {
- LOGINFO("cTCPLink OnRemoteClosed() callback failed in plugin %s.", m_Plugin.GetName().c_str());
- }
+ m_Callbacks->CallTableFn("OnRemoteClosed", this);
+ // Terminate all processing on the link:
Terminated();
}
diff --git a/src/Bindings/LuaTCPLink.h b/src/Bindings/LuaTCPLink.h
index c8ae776fe..b8c886ef8 100644
--- a/src/Bindings/LuaTCPLink.h
+++ b/src/Bindings/LuaTCPLink.h
@@ -10,8 +10,8 @@
#pragma once
#include "../OSSupport/Network.h"
-#include "PluginLua.h"
#include "../PolarSSL++/SslContext.h"
+#include "LuaState.h"
@@ -30,11 +30,11 @@ class cLuaTCPLink:
public cTCPLink::cCallbacks
{
public:
- /** Creates a new instance of the link, attached to the specified plugin and wrapping the callbacks that are in a table at the specified stack pos. */
- cLuaTCPLink(cPluginLua & a_Plugin, int a_CallbacksTableStackPos);
+ /** Creates a new instance of the link, wrapping the callbacks that are in the specified table. */
+ cLuaTCPLink(cLuaState::cTableRefPtr && a_Callbacks);
/** Creates a new instance of the link, attached to the specified plugin and wrapping the callbacks that are in the specified referenced table. */
- cLuaTCPLink(cPluginLua & a_Plugin, cLuaState::cRef && a_CallbacksTableRef, cLuaServerHandleWPtr a_Server);
+ cLuaTCPLink(cLuaState::cTableRefPtr && a_Callbacks, cLuaServerHandleWPtr a_Server);
~cLuaTCPLink();
@@ -139,11 +139,8 @@ protected:
};
- /** The plugin for which the link is created. */
- cPluginLua & m_Plugin;
-
/** The Lua table that holds the callbacks to be invoked. */
- cLuaState::cRef m_Callbacks;
+ cLuaState::cTableRefPtr m_Callbacks;
/** The underlying link representing the connection.
May be nullptr. */
diff --git a/src/Bindings/LuaUDPEndpoint.cpp b/src/Bindings/LuaUDPEndpoint.cpp
index ed8f4e87f..779efcbce 100644
--- a/src/Bindings/LuaUDPEndpoint.cpp
+++ b/src/Bindings/LuaUDPEndpoint.cpp
@@ -10,17 +10,9 @@
-cLuaUDPEndpoint::cLuaUDPEndpoint(cPluginLua & a_Plugin, int a_CallbacksTableStackPos):
- m_Plugin(a_Plugin),
- m_Callbacks(cPluginLua::cOperation(a_Plugin)(), a_CallbacksTableStackPos)
+cLuaUDPEndpoint::cLuaUDPEndpoint(cLuaState::cTableRefPtr && a_Callbacks):
+ m_Callbacks(std::move(a_Callbacks))
{
- // Warn if the callbacks aren't valid:
- if (!m_Callbacks.IsValid())
- {
- LOGWARNING("cLuaUDPEndpoint in plugin %s: callbacks could not be retrieved", m_Plugin.GetName().c_str());
- cPluginLua::cOperation Op(m_Plugin);
- Op().LogStackTrace();
- }
}
@@ -30,10 +22,10 @@ cLuaUDPEndpoint::cLuaUDPEndpoint(cPluginLua & a_Plugin, int a_CallbacksTableStac
cLuaUDPEndpoint::~cLuaUDPEndpoint()
{
// If the endpoint is still open, close it:
- cUDPEndpointPtr Endpoint = m_Endpoint;
- if (Endpoint != nullptr)
+ auto endpoint = m_Endpoint;
+ if (endpoint != nullptr)
{
- Endpoint->Close();
+ endpoint->Close();
}
Terminated();
@@ -60,14 +52,14 @@ bool cLuaUDPEndpoint::Open(UInt16 a_Port, cLuaUDPEndpointPtr a_Self)
bool cLuaUDPEndpoint::Send(const AString & a_Data, const AString & a_RemotePeer, UInt16 a_RemotePort)
{
// Safely grab a copy of the endpoint:
- cUDPEndpointPtr Endpoint = m_Endpoint;
- if (Endpoint == nullptr)
+ auto endpoint = m_Endpoint;
+ if (endpoint == nullptr)
{
return false;
}
// Send the data:
- return Endpoint->Send(a_Data, a_RemotePeer, a_RemotePort);
+ return endpoint->Send(a_Data, a_RemotePeer, a_RemotePort);
}
@@ -77,14 +69,14 @@ bool cLuaUDPEndpoint::Send(const AString & a_Data, const AString & a_RemotePeer,
UInt16 cLuaUDPEndpoint::GetPort(void) const
{
// Safely grab a copy of the endpoint:
- cUDPEndpointPtr Endpoint = m_Endpoint;
- if (Endpoint == nullptr)
+ auto endpoint = m_Endpoint;
+ if (endpoint == nullptr)
{
return 0;
}
// Get the port:
- return Endpoint->GetPort();
+ return endpoint->GetPort();
}
@@ -94,15 +86,15 @@ UInt16 cLuaUDPEndpoint::GetPort(void) const
bool cLuaUDPEndpoint::IsOpen(void) const
{
// Safely grab a copy of the endpoint:
- cUDPEndpointPtr Endpoint = m_Endpoint;
- if (Endpoint == nullptr)
+ auto endpoint = m_Endpoint;
+ if (endpoint == nullptr)
{
// No endpoint means that we're not open
return false;
}
// Get the state:
- return Endpoint->IsOpen();
+ return endpoint->IsOpen();
}
@@ -112,10 +104,10 @@ bool cLuaUDPEndpoint::IsOpen(void) const
void cLuaUDPEndpoint::Close(void)
{
// If the endpoint is still open, close it:
- cUDPEndpointPtr Endpoint = m_Endpoint;
- if (Endpoint != nullptr)
+ auto endpoint = m_Endpoint;
+ if (endpoint != nullptr)
{
- Endpoint->Close();
+ endpoint->Close();
m_Endpoint.reset();
}
@@ -129,10 +121,10 @@ void cLuaUDPEndpoint::Close(void)
void cLuaUDPEndpoint::EnableBroadcasts(void)
{
// Safely grab a copy of the endpoint:
- cUDPEndpointPtr Endpoint = m_Endpoint;
- if (Endpoint != nullptr)
+ auto endpoint = m_Endpoint;
+ if (endpoint != nullptr)
{
- Endpoint->EnableBroadcasts();
+ endpoint->EnableBroadcasts();
}
}
@@ -156,17 +148,14 @@ void cLuaUDPEndpoint::Release(void)
void cLuaUDPEndpoint::Terminated(void)
{
// Disable the callbacks:
- if (m_Callbacks.IsValid())
- {
- m_Callbacks.UnRef();
- }
+ m_Callbacks.reset();
// If the endpoint is still open, close it:
{
- cUDPEndpointPtr Endpoint = m_Endpoint;
- if (Endpoint != nullptr)
+ auto endpoint = m_Endpoint;
+ if (endpoint != nullptr)
{
- Endpoint->Close();
+ endpoint->Close();
m_Endpoint.reset();
}
}
@@ -178,18 +167,7 @@ void cLuaUDPEndpoint::Terminated(void)
void cLuaUDPEndpoint::OnReceivedData(const char * a_Data, size_t a_NumBytes, const AString & a_RemotePeer, UInt16 a_RemotePort)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
- // Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnReceivedData"), this, AString(a_Data, a_NumBytes), a_RemotePeer, a_RemotePort))
- {
- LOGINFO("cUDPEndpoint OnReceivedData callback failed in plugin %s.", m_Plugin.GetName().c_str());
- }
+ m_Callbacks->CallTableFn("OnReceivedData", this, AString(a_Data, a_NumBytes), a_RemotePeer, a_RemotePort);
}
@@ -198,21 +176,10 @@ void cLuaUDPEndpoint::OnReceivedData(const char * a_Data, size_t a_NumBytes, con
void cLuaUDPEndpoint::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
{
- // Check if we're still valid:
- if (!m_Callbacks.IsValid())
- {
- return;
- }
-
- // Call the callback:
- cPluginLua::cOperation Op(m_Plugin);
- if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnError"), a_ErrorCode, a_ErrorMsg))
- {
- LOGINFO("cUDPEndpoint OnError() callback failed in plugin %s; the endpoint error is %d (%s).",
- m_Plugin.GetName().c_str(), a_ErrorCode, a_ErrorMsg.c_str()
- );
- }
+ // Notify the plugin:
+ m_Callbacks->CallTableFn("OnError", a_ErrorCode, a_ErrorMsg);
+ // Terminate all processing on the endpoint:
Terminated();
}
diff --git a/src/Bindings/LuaUDPEndpoint.h b/src/Bindings/LuaUDPEndpoint.h
index 0587491ab..338ea6648 100644
--- a/src/Bindings/LuaUDPEndpoint.h
+++ b/src/Bindings/LuaUDPEndpoint.h
@@ -10,7 +10,7 @@
#pragma once
#include "../OSSupport/Network.h"
-#include "PluginLua.h"
+#include "LuaState.h"
@@ -28,8 +28,8 @@ class cLuaUDPEndpoint:
public cUDPEndpoint::cCallbacks
{
public:
- /** Creates a new instance of the endpoint, attached to the specified plugin and wrapping the callbacks that are in a table at the specified stack pos. */
- cLuaUDPEndpoint(cPluginLua & a_Plugin, int a_CallbacksTableStackPos);
+ /** Creates a new instance of the endpoint, wrapping the callbacks that are in the specified table. */
+ cLuaUDPEndpoint(cLuaState::cTableRefPtr && a_Callbacks);
~cLuaUDPEndpoint();
@@ -58,11 +58,8 @@ public:
void Release(void);
protected:
- /** The plugin for which the link is created. */
- cPluginLua & m_Plugin;
-
/** The Lua table that holds the callbacks to be invoked. */
- cLuaState::cRef m_Callbacks;
+ cLuaState::cTableRefPtr m_Callbacks;
/** SharedPtr to self, so that the object can keep itself alive for as long as it needs (for Lua). */
cLuaUDPEndpointPtr m_Self;
diff --git a/src/Bindings/ManualBindings.cpp b/src/Bindings/ManualBindings.cpp
index bc5352a84..b6a10adf3 100644
--- a/src/Bindings/ManualBindings.cpp
+++ b/src/Bindings/ManualBindings.cpp
@@ -2647,17 +2647,16 @@ class cLuaBlockTracerCallbacks :
public cBlockTracer::cCallbacks
{
public:
- cLuaBlockTracerCallbacks(cLuaState & a_LuaState, int a_ParamNum) :
- m_LuaState(a_LuaState),
- m_TableRef(a_LuaState, a_ParamNum)
+ cLuaBlockTracerCallbacks(cLuaState::cTableRefPtr && a_Callbacks):
+ m_Callbacks(std::move(a_Callbacks))
{
}
virtual bool OnNextBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, char a_EntryFace) override
{
bool res = false;
- if (!m_LuaState.Call(
- cLuaState::cTableRef(m_TableRef, "OnNextBlock"),
+ if (!m_Callbacks->CallTableFn(
+ "OnNextBlock",
a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, a_EntryFace,
cLuaState::Return, res
))
@@ -2671,8 +2670,8 @@ public:
virtual bool OnNextBlockNoData(int a_BlockX, int a_BlockY, int a_BlockZ, char a_EntryFace) override
{
bool res = false;
- if (!m_LuaState.Call(
- cLuaState::cTableRef(m_TableRef, "OnNextBlockNoData"),
+ if (!m_Callbacks->CallTableFn(
+ "OnNextBlockNoData",
a_BlockX, a_BlockY, a_BlockZ, a_EntryFace,
cLuaState::Return, res
))
@@ -2686,8 +2685,8 @@ public:
virtual bool OnOutOfWorld(double a_BlockX, double a_BlockY, double a_BlockZ) override
{
bool res = false;
- if (!m_LuaState.Call(
- cLuaState::cTableRef(m_TableRef, "OnOutOfWorld"),
+ if (!m_Callbacks->CallTableFn(
+ "OnOutOfWorld",
a_BlockX, a_BlockY, a_BlockZ,
cLuaState::Return, res
))
@@ -2701,8 +2700,8 @@ public:
virtual bool OnIntoWorld(double a_BlockX, double a_BlockY, double a_BlockZ) override
{
bool res = false;
- if (!m_LuaState.Call(
- cLuaState::cTableRef(m_TableRef, "OnIntoWorld"),
+ if (!m_Callbacks->CallTableFn(
+ "OnIntoWorld",
a_BlockX, a_BlockY, a_BlockZ,
cLuaState::Return, res
))
@@ -2715,17 +2714,16 @@ public:
virtual void OnNoMoreHits(void) override
{
- m_LuaState.Call(cLuaState::cTableRef(m_TableRef, "OnNoMoreHits"));
+ m_Callbacks->CallTableFn("OnNoMoreHits");
}
virtual void OnNoChunk(void) override
{
- m_LuaState.Call(cLuaState::cTableRef(m_TableRef, "OnNoChunk"));
+ m_Callbacks->CallTableFn("OnNoChunk");
}
protected:
- cLuaState & m_LuaState;
- cLuaState::cRef m_TableRef;
+ cLuaState::cTableRefPtr m_Callbacks;
} ;
@@ -2759,16 +2757,22 @@ static int tolua_cLineBlockTracer_Trace(lua_State * tolua_S)
return 0;
}
+ // Get the params:
+ cWorld * world;
+ double startX, startY, startZ;
+ double endX, endY, endZ;
+ cLuaState::cTableRefPtr callbacks;
+ if (!L.GetStackValues(idx, world, callbacks, startX, startY, startZ, endX, endY, endZ))
+ {
+ LOGWARNING("cLineBlockTracer:Trace(): Cannot read parameters (starting at idx %d), aborting the trace.", idx);
+ L.LogStackTrace();
+ L.LogStackValues("Values on the stack");
+ return 0;
+ }
+
// Trace:
- cWorld * World = reinterpret_cast<cWorld *>(tolua_tousertype(L, idx, nullptr));
- cLuaBlockTracerCallbacks Callbacks(L, idx + 1);
- double StartX = tolua_tonumber(L, idx + 2, 0);
- double StartY = tolua_tonumber(L, idx + 3, 0);
- double StartZ = tolua_tonumber(L, idx + 4, 0);
- double EndX = tolua_tonumber(L, idx + 5, 0);
- double EndY = tolua_tonumber(L, idx + 6, 0);
- double EndZ = tolua_tonumber(L, idx + 7, 0);
- bool res = cLineBlockTracer::Trace(*World, Callbacks, StartX, StartY, StartZ, EndX, EndY, EndZ);
+ cLuaBlockTracerCallbacks tracerCallbacks(std::move(callbacks));
+ bool res = cLineBlockTracer::Trace(*world, tracerCallbacks, startX, startY, startZ, endX, endY, endZ);
tolua_pushboolean(L, res ? 1 : 0);
return 1;
}
diff --git a/src/Bindings/ManualBindings_Network.cpp b/src/Bindings/ManualBindings_Network.cpp
index 576fe94b7..68eba5870 100644
--- a/src/Bindings/ManualBindings_Network.cpp
+++ b/src/Bindings/ManualBindings_Network.cpp
@@ -38,33 +38,34 @@ static int tolua_cNetwork_Connect(lua_State * L)
return 0;
}
- // Get the plugin instance:
- cPluginLua * Plugin = cManualBindings::GetLuaPlugin(L);
- if (Plugin == nullptr)
+ // Read the params:
+ AString host;
+ int port = 0;
+ cLuaState::cTableRefPtr callbacks;
+ if (!S.GetStackValues(2, host, port, callbacks))
{
- // An error message has been already printed in GetLuaPlugin()
+ LOGWARNING("cNetwork::Connect() cannot read its parameters, failing the request.");
+ S.LogStackTrace();
+ S.LogStackValues("Values on the stack");
S.Push(false);
return 1;
}
- // Read the params:
- AString Host;
- int Port = 0;
- S.GetStackValues(2, Host, Port);
-
// Check validity:
- if ((Port < 0) || (Port > 65535))
+ if ((port < 0) || (port > 65535))
{
- LOGWARNING("cNetwork:Connect() called with invalid port (%d), failing the request.", Port);
+ LOGWARNING("cNetwork:Connect() called with invalid port (%d), failing the request.", port);
+ S.LogStackTrace();
S.Push(false);
return 1;
}
+ ASSERT(callbacks != nullptr); // Invalid callbacks would have resulted in GetStackValues() returning false
// Create the LuaTCPLink glue class:
- auto Link = std::make_shared<cLuaTCPLink>(*Plugin, 4);
+ auto link = std::make_shared<cLuaTCPLink>(std::move(callbacks));
// Try to connect:
- bool res = cNetwork::Connect(Host, static_cast<UInt16>(Port), Link, Link);
+ bool res = cNetwork::Connect(host, static_cast<UInt16>(port), link, link);
S.Push(res);
return 1;
@@ -91,36 +92,38 @@ static int tolua_cNetwork_CreateUDPEndpoint(lua_State * L)
return 0;
}
- // Get the plugin instance:
- cPluginLua * Plugin = cManualBindings::GetLuaPlugin(L);
- if (Plugin == nullptr)
+ // Read the params:
+ UInt16 port;
+ cLuaState::cTableRefPtr callbacks;
+ if (!S.GetStackValues(2, port, callbacks))
{
- // An error message has been already printed in GetLuaPlugin()
+ LOGWARNING("cNetwork:CreateUDPEndpoint() cannot read its parameters, failing the request.");
+ S.LogStackTrace();
+ S.LogStackValues("Values on the stack");
S.Push(false);
return 1;
}
- // Read the params:
- UInt16 Port;
-
// Check validity:
- if (!S.GetStackValues(2, Port))
+ if ((port < 0) || (port > 65535))
{
- LOGWARNING("cNetwork:CreateUDPEndpoint() called with invalid port, failing the request.");
+ LOGWARNING("cNetwork:CreateUDPEndpoint() called with invalid port (%d), failing the request.", port);
+ S.LogStackTrace();
S.Push(false);
return 1;
}
+ ASSERT(callbacks != nullptr); // Invalid callbacks would have resulted in GetStackValues() returning false
// Create the LuaUDPEndpoint glue class:
- auto Endpoint = std::make_shared<cLuaUDPEndpoint>(*Plugin, 3);
- Endpoint->Open(Port, Endpoint);
+ auto endpoint = std::make_shared<cLuaUDPEndpoint>(std::move(callbacks));
+ endpoint->Open(port, endpoint);
// Register the endpoint to be garbage-collected by Lua:
- tolua_pushusertype(L, Endpoint.get(), "cUDPEndpoint");
+ tolua_pushusertype(L, endpoint.get(), "cUDPEndpoint");
tolua_register_gc(L, lua_gettop(L));
// Return the endpoint object:
- S.Push(Endpoint.get());
+ S.Push(endpoint.get());
return 1;
}
@@ -169,21 +172,21 @@ static int tolua_cNetwork_HostnameToIP(lua_State * L)
return 0;
}
- // Get the plugin instance:
- cPluginLua * Plugin = cManualBindings::GetLuaPlugin(L);
- if (Plugin == nullptr)
+ // Read the params:
+ AString host;
+ cLuaState::cTableRefPtr callbacks;
+ if (!S.GetStackValues(2, host, callbacks))
{
- // An error message has been already printed in GetLuaPlugin()
+ LOGWARNING("cNetwork::HostnameToIP() cannot read its parameters, failing the request.");
+ S.LogStackTrace();
+ S.LogStackValues("Values on the stack");
S.Push(false);
return 1;
}
-
- // Read the params:
- AString Host;
- S.GetStackValue(2, Host);
+ ASSERT(callbacks != nullptr); // Invalid callbacks would have resulted in GetStackValues() returning false
// Try to look up:
- bool res = cNetwork::HostnameToIP(Host, std::make_shared<cLuaNameLookup>(Host, *Plugin, 3));
+ bool res = cNetwork::HostnameToIP(host, std::make_shared<cLuaNameLookup>(host, std::move(callbacks)));
S.Push(res);
return 1;
@@ -210,21 +213,21 @@ static int tolua_cNetwork_IPToHostname(lua_State * L)
return 0;
}
- // Get the plugin instance:
- cPluginLua * Plugin = cManualBindings::GetLuaPlugin(L);
- if (Plugin == nullptr)
+ // Read the params:
+ AString ip;
+ cLuaState::cTableRefPtr callbacks;
+ if (!S.GetStackValues(2, ip, callbacks))
{
- // An error message has been already printed in GetLuaPlugin()
+ LOGWARNING("cNetwork::IPToHostname() cannot read its parameters, failing the request.");
+ S.LogStackTrace();
+ S.LogStackValues("Values on the stack");
S.Push(false);
return 1;
}
-
- // Read the params:
- AString Host;
- S.GetStackValue(2, Host);
+ ASSERT(callbacks != nullptr); // Invalid callbacks would have resulted in GetStackValues() returning false
// Try to look up:
- bool res = cNetwork::IPToHostName(Host, std::make_shared<cLuaNameLookup>(Host, *Plugin, 3));
+ bool res = cNetwork::IPToHostName(ip, std::make_shared<cLuaNameLookup>(ip, std::move(callbacks)));
S.Push(res);
return 1;
@@ -251,38 +254,40 @@ static int tolua_cNetwork_Listen(lua_State * L)
return 0;
}
- // Get the plugin instance:
- cPluginLua * Plugin = cManualBindings::GetLuaPlugin(L);
- if (Plugin == nullptr)
+ // Read the params:
+ int port = 0;
+ cLuaState::cTableRefPtr callbacks;
+ if (!S.GetStackValues(2, port, callbacks))
{
- // An error message has been already printed in GetLuaPlugin()
+ LOGWARNING("cNetwork::Listen() cannot read its parameters, failing the request.");
+ S.LogStackTrace();
+ S.LogStackValues("Values on the stack");
S.Push(false);
return 1;
}
- // Read the params:
- int Port = 0;
- S.GetStackValues(2, Port);
- if ((Port < 0) || (Port > 65535))
+ // Check the validity:
+ if ((port < 0) || (port > 65535))
{
- LOGWARNING("cNetwork:Listen() called with invalid port (%d), failing the request.", Port);
+ LOGWARNING("cNetwork:Listen() called with invalid port (%d), failing the request.", port);
+ S.LogStackTrace();
S.Push(false);
return 1;
}
- UInt16 Port16 = static_cast<UInt16>(Port);
+ auto port16 = static_cast<UInt16>(port);
// Create the LuaTCPLink glue class:
- auto Srv = std::make_shared<cLuaServerHandle>(Port16, *Plugin, 3);
+ auto srv = std::make_shared<cLuaServerHandle>(port16, std::move(callbacks));
// Listen:
- Srv->SetServerHandle(cNetwork::Listen(Port16, Srv), Srv);
+ srv->SetServerHandle(cNetwork::Listen(port16, srv), srv);
// Register the server to be garbage-collected by Lua:
- tolua_pushusertype(L, Srv.get(), "cServerHandle");
+ tolua_pushusertype(L, srv.get(), "cServerHandle");
tolua_register_gc(L, lua_gettop(L));
// Return the server handle wrapper:
- S.Push(Srv.get());
+ S.Push(srv.get());
return 1;
}
diff --git a/src/OSSupport/IPLookup.cpp b/src/OSSupport/IPLookup.cpp
index 8cdc5132d..2722d4722 100644
--- a/src/OSSupport/IPLookup.cpp
+++ b/src/OSSupport/IPLookup.cpp
@@ -103,7 +103,13 @@ bool cNetwork::IPToHostName(
{
auto res = std::make_shared<cIPLookup>(a_Callbacks);
cNetworkSingleton::Get().AddIPLookup(res);
- return res->Lookup(a_IP);
+ if (!res->Lookup(a_IP))
+ {
+ // Lookup failed early on, remove the object completely:
+ cNetworkSingleton::Get().RemoveIPLookup(res.get());
+ return false;
+ }
+ return true;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 16:41:43 +0100