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SqMod/modules/mg/Module.cpp

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// ------------------------------------------------------------------------------------------------
#include "Common.hpp"
#include "Manager.hpp"
#include "Connection.hpp"
// ------------------------------------------------------------------------------------------------
#include <cstdio>
#include <cstdlib>
// ------------------------------------------------------------------------------------------------
namespace SqMod {
/* ------------------------------------------------------------------------------------------------
* Register the module API under the specified virtual machine.
*/
void RegisterAPI(HSQUIRRELVM vm);
/* ------------------------------------------------------------------------------------------------
* Initialize the plug-in by obtaining the API provided by the host plug-in.
*/
void OnSquirrelInitialize()
{
// Attempt to import the plug-in API exported by the host plug-in
_SqMod = sq_api_import(_Func);
// Did we failed to obtain the plug-in exports?
if (!_SqMod)
{
OutputError("Failed to attach [%s] on host plug-in.", SQMG_NAME);
}
else
{
// Expand the Squirrel plug-in API into global functions
sqmod_api_expand(_SqMod);
// Obtain the Squirrel API
_SqAPI = SqMod_GetSquirrelAPI();
// Expand the Squirrel API into global functions
sq_api_expand(_SqAPI);
}
}
/* ------------------------------------------------------------------------------------------------
* Load the module on the virtual machine provided by the host module.
*/
void OnSquirrelLoad()
{
// Make sure that we have a valid plug-in API
if (!_SqMod)
{
return; // Unable to proceed.
}
// Obtain the Squirrel API and VM
_SqVM = SqMod_GetSquirrelVM();
// Make sure that a valid virtual machine exists
if (!_SqVM)
{
return; // Unable to proceed.
}
// Set this as the default database
DefaultVM::Set(_SqVM);
// Prevent common null objects from using dead virtual machines
NullArray() = Array();
NullTable() = Table();
NullObject() = Object();
NullFunction() = Function();
// Register the module API
RegisterAPI(_SqVM);
// Notify about the current status
OutputMessage("Registered: %s", SQMG_NAME);
}
/* ------------------------------------------------------------------------------------------------
* The virtual machine is about to be terminated and script resources should be released.
*/
void OnSquirrelTerminate()
{
OutputMessage("Terminating: %s", SQMG_NAME);
// Release null objects just in case
NullObject().Release();
NullTable().Release();
NullArray().Release();
NullFunction().ReleaseGently();
}
/* ------------------------------------------------------------------------------------------------
* The virtual machined was closed and all memory associated with it was released.
*/
void OnSquirrelReleased()
{
// Release the current virtual machine, if any
DefaultVM::Set(nullptr);
}
/* ------------------------------------------------------------------------------------------------
* Validate the module API to make sure we don't run into issues.
*/
bool CheckAPIVer(CCStr ver)
{
// Obtain the numeric representation of the API version
const LongI vernum = std::strtol(ver, nullptr, 10);
// Check against version mismatch
if (vernum == SQMOD_API_VER)
{
return true;
}
// Log the incident
OutputError("API version mismatch on %s", SQMG_NAME);
OutputMessage("=> Requested: %ld Have: %ld", vernum, SQMOD_API_VER);
// Invoker should not attempt to communicate through the module API
return false;
}
/* ------------------------------------------------------------------------------------------------
* React to command sent by other plug-ins.
*/
static uint8_t OnPluginCommand(uint32_t command_identifier, CCStr message)
{
switch(command_identifier)
{
case SQMOD_INITIALIZE_CMD:
if (CheckAPIVer(message))
{
OnSquirrelInitialize();
}
break;
case SQMOD_LOAD_CMD:
OnSquirrelLoad();
break;
case SQMOD_TERMINATE_CMD:
OnSquirrelTerminate();
break;
case SQMOD_RELEASED_CMD:
OnSquirrelReleased();
break;
default: break;
}
return 1;
}
/* ------------------------------------------------------------------------------------------------
* The server was initialized and this plug-in was loaded successfully.
*/
static uint8_t OnServerInitialise()
{
return 1;
}
static void OnServerShutdown(void)
{
// The server may still send callbacks
_Clbk->OnServerInitialise = nullptr;
_Clbk->OnServerShutdown = nullptr;
_Clbk->OnPluginCommand = nullptr;
}
// ------------------------------------------------------------------------------------------------
void RegisterAPI(HSQUIRRELVM vm)
{
Table mgns(vm);
mgns.Bind(_SC("Manager"), Class< Manager >(vm, _SC("SqMgManager"))
// Constructors
.Ctor()
.Ctor< const Manager & >()
// Core Meta-methods
.Func(_SC("_cmp"), &Manager::Cmp)
.SquirrelFunc(_SC("_typename"), &Manager::Typename)
.Func(_SC("_tostring"), &Manager::ToString)
// Properties
//.Prop(_SC("Valid"), &Manager::IsValid)
// Member Methods
//.Func(_SC("Check"), &Manager::Check)
// Overloaded Methods
.Overload< Connection (Manager::*)(CSStr) const >(_SC("Bind"), &Manager::Bind)
.Overload< Connection (Manager::*)(CSStr, Uint32) const >(_SC("Bind"), &Manager::Bind)
.Overload< Connection (Manager::*)(CSStr) const >(_SC("Connect"), &Manager::Connect)
.Overload< Connection (Manager::*)(CSStr, Uint32) const >(_SC("Connect"), &Manager::Connect)
);
mgns.Bind(_SC("Connection"), Class< Connection >(vm, _SC("SqMgConnection"))
// Constructors
.Ctor()
.Ctor< const Connection & >()
// Core Meta-methods
.Func(_SC("_cmp"), &Connection::Cmp)
.SquirrelFunc(_SC("_typename"), &Connection::Typename)
.Func(_SC("_tostring"), &Connection::ToString)
// Properties
//.Prop(_SC("Valid"), &Connection::IsValid)
// Member Methods
//.Func(_SC("Check"), &Connection::Check)
);
RootTable(vm).Bind(_SC("SqMg"), mgns);
ConstTable(vm).Enum(_SC("EMgF"), Enumeration(vm)
.Const(_SC("LISTENING"), MG_F_LISTENING)
.Const(_SC("UDP"), MG_F_UDP)
.Const(_SC("RESOLVING"), MG_F_RESOLVING)
.Const(_SC("CONNECTING"), MG_F_CONNECTING)
.Const(_SC("SSL_HANDSHAKE_DONE"), MG_F_SSL_HANDSHAKE_DONE)
.Const(_SC("WANT_READ"), MG_F_WANT_READ)
.Const(_SC("WANT_WRITE"), MG_F_WANT_WRITE)
.Const(_SC("IS_WEBSOCKET"), MG_F_IS_WEBSOCKET)
.Const(_SC("SEND_AND_CLOSE"), MG_F_SEND_AND_CLOSE)
.Const(_SC("CLOSE_IMMEDIATELY"), MG_F_CLOSE_IMMEDIATELY)
.Const(_SC("WEBSOCKET_NO_DEFRAG"), MG_F_WEBSOCKET_NO_DEFRAG)
.Const(_SC("DELETE_CHUNK"), MG_F_DELETE_CHUNK)
.Const(_SC("USER_1"), MG_F_USER_1)
.Const(_SC("USER_2"), MG_F_USER_2)
.Const(_SC("USER_3"), MG_F_USER_3)
.Const(_SC("USER_4"), MG_F_USER_4)
.Const(_SC("USER_5"), MG_F_USER_5)
.Const(_SC("USER_6"), MG_F_USER_6)
);
ConstTable(vm).Enum(_SC("MgEv"), Enumeration(vm)
.Const(_SC("UNKNOWN"), static_cast< Int32 >(MGEV_UNKNOWN))
.Const(_SC("POLL"), static_cast< Int32 >(MGCE_POLL))
.Const(_SC("ACCEPT"), static_cast< Int32 >(MGCE_ACCEPT))
.Const(_SC("CONNECT"), static_cast< Int32 >(MGCE_CONNECT))
.Const(_SC("RECV"), static_cast< Int32 >(MGCE_RECV))
.Const(_SC("SEND"), static_cast< Int32 >(MGCE_SEND))
.Const(_SC("CLOSE"), static_cast< Int32 >(MGCE_CLOSE))
.Const(_SC("TIMER"), static_cast< Int32 >(MGCE_TIMER))
.Const(_SC("HTTP_REQUEST"), static_cast< Int32 >(MGCE_HTTP_REQUEST))
.Const(_SC("HTTP_REPLY"), static_cast< Int32 >(MGCE_HTTP_REPLY))
.Const(_SC("HTTP_CHUNK"), static_cast< Int32 >(MGCE_HTTP_CHUNK))
.Const(_SC("SSI_CALL"), static_cast< Int32 >(MGCE_SSI_CALL))
.Const(_SC("WEBSOCKET_HANDSHAKE_REQUEST"), static_cast< Int32 >(MGCE_WEBSOCKET_HANDSHAKE_REQUEST))
.Const(_SC("WEBSOCKET_HANDSHAKE_DONE"), static_cast< Int32 >(MGCE_WEBSOCKET_HANDSHAKE_DONE))
.Const(_SC("WEBSOCKET_FRAME"), static_cast< Int32 >(MGCE_WEBSOCKET_FRAME))
.Const(_SC("WEBSOCKET_CONTROL_FRAME"), static_cast< Int32 >(MGCE_WEBSOCKET_CONTROL_FRAME))
.Const(_SC("HTTP_MULTIPART_REQUEST"), static_cast< Int32 >(MGCE_HTTP_MULTIPART_REQUEST))
.Const(_SC("HTTP_PART_BEGIN"), static_cast< Int32 >(MGCE_HTTP_PART_BEGIN))
.Const(_SC("HTTP_PART_DATA"), static_cast< Int32 >(MGCE_HTTP_PART_DATA))
.Const(_SC("HTTP_PART_END"), static_cast< Int32 >(MGCE_HTTP_PART_END))
.Const(_SC("MQTT_CONNECT"), static_cast< Int32 >(MGCE_MQTT_CONNECT))
.Const(_SC("MQTT_CONNACK"), static_cast< Int32 >(MGCE_MQTT_CONNACK))
.Const(_SC("MQTT_PUBLISH"), static_cast< Int32 >(MGCE_MQTT_PUBLISH))
.Const(_SC("MQTT_PUBACK"), static_cast< Int32 >(MGCE_MQTT_PUBACK))
.Const(_SC("MQTT_PUBREC"), static_cast< Int32 >(MGCE_MQTT_PUBREC))
.Const(_SC("MQTT_PUBREL"), static_cast< Int32 >(MGCE_MQTT_PUBREL))
.Const(_SC("MQTT_PUBCOMP"), static_cast< Int32 >(MGCE_MQTT_PUBCOMP))
.Const(_SC("MQTT_SUBSCRIBE"), static_cast< Int32 >(MGCE_MQTT_SUBSCRIBE))
.Const(_SC("MQTT_SUBACK"), static_cast< Int32 >(MGCE_MQTT_SUBACK))
.Const(_SC("MQTT_UNSUBSCRIBE"), static_cast< Int32 >(MGCE_MQTT_UNSUBSCRIBE))
.Const(_SC("MQTT_UNSUBACK"), static_cast< Int32 >(MGCE_MQTT_UNSUBACK))
.Const(_SC("MQTT_PINGREQ"), static_cast< Int32 >(MGCE_MQTT_PINGREQ))
.Const(_SC("MQTT_PINGRESP"), static_cast< Int32 >(MGCE_MQTT_PINGRESP))
.Const(_SC("MQTT_DISCONNECT"), static_cast< Int32 >(MGCE_MQTT_DISCONNECT))
.Const(_SC("MQTT_CONNACK_ACCEPTED"), static_cast< Int32 >(MGCE_MQTT_CONNACK_ACCEPTED))
.Const(_SC("MQTT_CONNACK_UNACCEPTABLE_VERSION"), static_cast< Int32 >(MGCE_MQTT_CONNACK_UNACCEPTABLE_VERSION))
.Const(_SC("MQTT_CONNACK_IDENTIFIER_REJECTED"), static_cast< Int32 >(MGCE_MQTT_CONNACK_IDENTIFIER_REJECTED))
.Const(_SC("MQTT_CONNACK_SERVER_UNAVAILABLE"), static_cast< Int32 >(MGCE_MQTT_CONNACK_SERVER_UNAVAILABLE))
.Const(_SC("MQTT_CONNACK_BAD_AUTH"), static_cast< Int32 >(MGCE_MQTT_CONNACK_BAD_AUTH))
.Const(_SC("MQTT_CONNACK_NOT_AUTHORIZED"), static_cast< Int32 >(MGCE_MQTT_CONNACK_NOT_AUTHORIZED))
.Const(_SC("COAP_CON"), static_cast< Int32 >(MGCE_COAP_CON))
.Const(_SC("COAP_NOC"), static_cast< Int32 >(MGCE_COAP_NOC))
.Const(_SC("COAP_ACK"), static_cast< Int32 >(MGCE_COAP_ACK))
.Const(_SC("COAP_RST"), static_cast< Int32 >(MGCE_COAP_RST))
.Const(_SC("MAX"), static_cast< Int32 >(MGCE_MAX))
);
}
} // Namespace:: SqMod
// ------------------------------------------------------------------------------------------------
SQMOD_API_EXPORT unsigned int VcmpPluginInit(PluginFuncs * functions, PluginCallbacks * callbacks, PluginInfo * info)
{
using namespace SqMod;
// Output plug-in header
std::puts("");
OutputMessage("--------------------------------------------------------------------");
OutputMessage("Plug-in: %s", SQMG_NAME);
OutputMessage("Author: %s", SQMG_AUTHOR);
OutputMessage("Legal: %s", SQMG_COPYRIGHT);
OutputMessage("--------------------------------------------------------------------");
std::puts("");
// Attempt to find the host plug-in ID
const int host_plugin_id = functions->FindPlugin(SQMOD_HOST_NAME);
// See if our plug-in was loaded after the host plug-in
if (host_plugin_id < 0)
{
OutputError("%s could find the host plug-in", SQMG_NAME);
// Don't load!
return SQMOD_FAILURE;
}
// Should never reach this point but just in case
else if (static_cast< Uint32 >(host_plugin_id) > info->pluginId)
{
OutputError("%s loaded after the host plug-in", SQMG_NAME);
// Don't load!
return SQMOD_FAILURE;
}
// Store server proxies
_Func = functions;
_Clbk = callbacks;
_Info = info;
// Assign plug-in version
_Info->pluginVersion = SQMG_VERSION;
_Info->apiMajorVersion = PLUGIN_API_MAJOR;
_Info->apiMinorVersion = PLUGIN_API_MINOR;
// Assign the plug-in name
std::snprintf(_Info->name, sizeof(_Info->name), "%s", SQMG_HOST_NAME);
// Bind to the server callbacks
_Clbk->OnServerInitialise = OnServerInitialise;
_Clbk->OnServerShutdown = OnServerShutdown;
_Clbk->OnPluginCommand = OnPluginCommand;
// Notify that the plug-in was successfully loaded
OutputMessage("Successfully loaded %s", SQMG_NAME);
// Dummy spacing
std::puts("");
// Done!
return SQMOD_SUCCESS;
}
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