ds@621: /** ds@653: * vim: set ts=4 : ds@1330: * ============================================================================= dvander@1231: * SourceMod dvander@1231: * Copyright (C) 2004-2007 AlliedModders LLC. All rights reserved. ds@1330: * ============================================================================= dvander@646: * ds@1330: * This program is free software; you can redistribute it and/or modify it under ds@1330: * the terms of the GNU General Public License, version 3.0, as published by the ds@1330: * Free Software Foundation. dvander@1231: * ds@1330: * This program is distributed in the hope that it will be useful, but WITHOUT ds@1330: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS ds@1330: * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more ds@1330: * details. dvander@1231: * ds@1330: * You should have received a copy of the GNU General Public License along with ds@1330: * this program. If not, see . dvander@1231: * ds@1330: * As a special exception, AlliedModders LLC gives you permission to link the ds@1330: * code of this program (as well as its derivative works) to "Half-Life 2," the ds@1330: * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software ds@1330: * by the Valve Corporation. You must obey the GNU General Public License in ds@1330: * all respects for all other code used. Additionally, AlliedModders LLC grants ds@1330: * this exception to all derivative works. AlliedModders LLC defines further ds@1330: * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007), ds@1330: * or . dvander@646: * dvander@646: * Version: $Id$ dvander@646: */ ds@621: ds@621: #include "sm_globals.h" ds@621: #include "PluginSys.h" ds@621: #include "ForwardSys.h" ds@621: #include "HandleSys.h" ds@621: ds@621: HandleType_t g_GlobalFwdType = 0; ds@621: HandleType_t g_PrivateFwdType = 0; ds@621: ds@621: static bool s_CallStarted = false; ds@621: static ICallable *s_pCallable = NULL; ds@621: static IPluginFunction *s_pFunction = NULL; ds@621: static IForward *s_pForward = NULL; ds@621: ds@621: class ForwardNativeHelpers : ds@621: public SMGlobalClass, ds@621: public IHandleTypeDispatch ds@621: { ds@621: public: ds@621: void OnSourceModAllInitialized() ds@621: { ds@621: HandleAccess sec; ds@621: ds@621: /* Set GlobalFwd handle access security */ ds@621: g_HandleSys.InitAccessDefaults(NULL, &sec); ds@621: sec.access[HandleAccess_Read] = 0; ds@621: sec.access[HandleAccess_Clone] = HANDLE_RESTRICT_IDENTITY | HANDLE_RESTRICT_OWNER; ds@621: ds@621: /* Create 'GlobalFwd' handle type */ ds@621: g_GlobalFwdType = g_HandleSys.CreateType("GlobalFwd", this, 0, NULL, &sec, g_pCoreIdent, NULL); ds@621: ds@621: /* Private forwards are cloneable */ ds@621: sec.access[HandleAccess_Clone] = 0; ds@621: ds@621: /* Create 'PrivateFwd' handle type */ ds@621: g_PrivateFwdType = g_HandleSys.CreateType("PrivateFwd", this, g_GlobalFwdType, NULL, &sec, g_pCoreIdent, NULL); ds@621: } ds@621: ds@621: void OnSourceModShutdown() ds@621: { ds@621: g_HandleSys.RemoveType(g_PrivateFwdType, g_pCoreIdent); ds@621: g_HandleSys.RemoveType(g_GlobalFwdType, g_pCoreIdent); ds@621: } ds@621: ds@621: void OnHandleDestroy(HandleType_t type, void *object) ds@621: { ds@621: IForward *pForward = static_cast(object); ds@621: ds@621: g_Forwards.ReleaseForward(pForward); ds@621: } ds@621: } g_ForwardNativeHelpers; ds@621: ds@621: ds@621: /* Turn a public index into a function ID */ ds@621: inline funcid_t PublicIndexToFuncId(uint32_t idx) ds@621: { ds@621: return (idx << 1) | (1 << 0); ds@621: } ds@621: ds@621: /* Reset global function/forward call variables */ ds@621: inline void ResetCall() ds@621: { ds@621: s_CallStarted = false; ds@621: s_pFunction = NULL; ds@1082: s_pForward = NULL; ds@621: s_pCallable = NULL; ds@621: } ds@621: ds@621: static cell_t sm_GetFunctionByName(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: Handle_t hndl = static_cast(params[1]); ds@621: HandleError err; ds@621: char *name; ds@621: uint32_t idx; ds@621: IPlugin *pPlugin; ds@621: ds@621: if (hndl == 0) ds@621: { ds@621: pPlugin = g_PluginSys.FindPluginByContext(pContext->GetContext()); ds@621: } else { ds@621: pPlugin = g_PluginSys.PluginFromHandle(hndl, &err); ds@621: ds@621: if (!pPlugin) ds@621: { ds@621: return pContext->ThrowNativeError("Plugin handle %x is invalid (error %d)", hndl, err); ds@621: } ds@621: } ds@621: ds@621: pContext->LocalToString(params[2], &name); ds@621: ds@621: /* Get public function index */ ds@621: if (pPlugin->GetBaseContext()->FindPublicByName(name, &idx) == SP_ERROR_NOT_FOUND) ds@621: { ds@621: /* Return INVALID_FUNCTION if not found */ ds@621: return -1; ds@621: } ds@621: ds@621: /* Return function ID */ ds@621: return PublicIndexToFuncId(idx); ds@621: } ds@621: ds@621: static cell_t sm_CreateGlobalForward(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: cell_t count = params[0]; ds@621: char *name; ds@621: ParamType forwardParams[SP_MAX_EXEC_PARAMS]; ds@621: ds@621: if (count - 2 > SP_MAX_EXEC_PARAMS) ds@621: { ds@621: return pContext->ThrowNativeErrorEx(SP_ERROR_PARAMS_MAX, NULL); ds@621: } ds@621: ds@621: pContext->LocalToString(params[1], &name); ds@621: ds@621: cell_t *addr; ds@621: for (int i = 3; i <= count; i++) ds@621: { ds@621: pContext->LocalToPhysAddr(params[i], &addr); ds@621: forwardParams[i - 3] = static_cast(*addr); ds@621: } ds@621: ds@621: IForward *pForward = g_Forwards.CreateForward(name, static_cast(params[2]), count - 2, forwardParams); ds@621: ds@621: return g_HandleSys.CreateHandle(g_GlobalFwdType, pForward, pContext->GetIdentity(), g_pCoreIdent, NULL); ds@621: } ds@621: ds@621: static cell_t sm_CreateForward(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: cell_t count = params[0]; ds@621: ParamType forwardParams[SP_MAX_EXEC_PARAMS]; ds@621: ds@621: if (count - 1 > SP_MAX_EXEC_PARAMS) ds@621: { ds@621: return pContext->ThrowNativeErrorEx(SP_ERROR_PARAMS_MAX, NULL); ds@621: } ds@621: ds@621: cell_t *addr; ds@621: for (int i = 2; i <= count; i++) ds@621: { ds@621: pContext->LocalToPhysAddr(params[i], &addr); ds@621: forwardParams[i - 2] = static_cast(*addr); ds@621: } ds@621: ds@621: IChangeableForward *pForward = g_Forwards.CreateForwardEx(NULL, static_cast(params[1]), count - 1, forwardParams); ds@621: ds@621: return g_HandleSys.CreateHandle(g_PrivateFwdType, pForward, pContext->GetIdentity(), g_pCoreIdent, NULL); ds@621: } ds@621: ds@621: static cell_t sm_GetForwardFunctionCount(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: Handle_t hndl = static_cast(params[1]); ds@621: HandleError err; ds@621: IForward *pForward; ds@621: ds@621: if ((err=g_HandleSys.ReadHandle(hndl, g_GlobalFwdType, NULL, (void **)&pForward)) ds@621: != HandleError_None) ds@621: { ds@621: return pContext->ThrowNativeError("Invalid forward handle %x (error %d)", hndl, err); ds@621: } ds@621: ds@621: return pForward->GetFunctionCount(); ds@621: } ds@621: ds@621: static cell_t sm_AddToForward(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: Handle_t fwdHandle = static_cast(params[1]); ds@621: Handle_t plHandle = static_cast(params[2]); ds@621: HandleError err; ds@621: IChangeableForward *pForward; ds@621: IPlugin *pPlugin; ds@621: ds@621: if ((err=g_HandleSys.ReadHandle(fwdHandle, g_PrivateFwdType, NULL, (void **)&pForward)) ds@621: != HandleError_None) ds@621: { ds@621: return pContext->ThrowNativeError("Invalid private forward handle %x (error %d)", fwdHandle, err); ds@621: } ds@621: ds@621: if (plHandle == 0) ds@621: { ds@621: pPlugin = g_PluginSys.FindPluginByContext(pContext->GetContext()); ds@621: } else { ds@621: pPlugin = g_PluginSys.PluginFromHandle(plHandle, &err); ds@621: ds@621: if (!pPlugin) ds@621: { ds@621: return pContext->ThrowNativeError("Plugin handle %x is invalid (error %d)", plHandle, err); ds@621: } ds@621: } ds@621: ds@621: IPluginFunction *pFunction = pPlugin->GetBaseContext()->GetFunctionById(params[3]); ds@621: ds@621: if (!pFunction) ds@621: { ds@621: return pContext->ThrowNativeError("Invalid function id (%X)", params[3]); ds@621: } ds@621: ds@621: return pForward->AddFunction(pFunction); ds@621: } ds@621: ds@621: static cell_t sm_RemoveFromForward(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: Handle_t fwdHandle = static_cast(params[1]); ds@621: Handle_t plHandle = static_cast(params[2]); ds@621: HandleError err; ds@621: IChangeableForward *pForward; ds@621: IPlugin *pPlugin; ds@621: ds@621: if ((err=g_HandleSys.ReadHandle(fwdHandle, g_PrivateFwdType, NULL, (void **)&pForward)) ds@621: != HandleError_None) ds@621: { ds@621: return pContext->ThrowNativeError("Invalid private forward handle %x (error %d)", fwdHandle, err); ds@621: } ds@621: ds@621: if (plHandle == 0) ds@621: { ds@621: pPlugin = g_PluginSys.FindPluginByContext(pContext->GetContext()); ds@621: } else { ds@621: pPlugin = g_PluginSys.PluginFromHandle(plHandle, &err); ds@621: ds@621: if (!pPlugin) ds@621: { ds@621: return pContext->ThrowNativeError("Plugin handle %x is invalid (error %d)", plHandle, err); ds@621: } ds@621: } ds@621: ds@621: IPluginFunction *pFunction = pPlugin->GetBaseContext()->GetFunctionById(params[3]); ds@621: ds@621: if (!pFunction) ds@621: { ds@621: return pContext->ThrowNativeError("Invalid function id (%X)", params[3]); ds@621: } ds@621: ds@621: return pForward->RemoveFunction(pFunction); ds@621: } ds@621: ds@621: static cell_t sm_RemoveAllFromForward(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: Handle_t fwdHandle = static_cast(params[1]); ds@621: Handle_t plHandle = static_cast(params[2]); ds@621: HandleError err; ds@621: IChangeableForward *pForward; ds@621: IPlugin *pPlugin; ds@621: ds@621: if ((err=g_HandleSys.ReadHandle(fwdHandle, g_PrivateFwdType, NULL, (void **)&pForward)) ds@621: != HandleError_None) ds@621: { ds@621: return pContext->ThrowNativeError("Invalid private forward handle %x (error %d)", fwdHandle, err); ds@621: } ds@621: ds@621: if (plHandle == 0) ds@621: { ds@621: pPlugin = g_PluginSys.FindPluginByContext(pContext->GetContext()); ds@621: } else { ds@621: pPlugin = g_PluginSys.PluginFromHandle(plHandle, &err); ds@621: ds@621: if (!pPlugin) ds@621: { ds@621: return pContext->ThrowNativeError("Plugin handle %x is invalid (error %d)", plHandle, err); ds@621: } ds@621: } ds@621: ds@621: return pForward->RemoveFunctionsOfPlugin(pPlugin); ds@621: } ds@621: ds@621: static cell_t sm_CallStartFunction(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: Handle_t hndl; ds@621: HandleError err; ds@621: IPlugin *pPlugin; ds@621: ds@621: if (s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot start a call while one is already in progress"); ds@621: } ds@621: ds@621: hndl = static_cast(params[1]); ds@621: ds@621: if (hndl == 0) ds@621: { ds@621: pPlugin = g_PluginSys.FindPluginByContext(pContext->GetContext()); ds@621: } else { ds@621: pPlugin = g_PluginSys.PluginFromHandle(hndl, &err); ds@621: ds@621: if (!pPlugin) ds@621: { ds@621: return pContext->ThrowNativeError("Plugin handle %x is invalid (error %d)", hndl, err); ds@621: } ds@621: } ds@621: ds@621: s_pFunction = pPlugin->GetBaseContext()->GetFunctionById(params[2]); ds@621: ds@621: if (!s_pFunction) ds@621: { ds@621: return pContext->ThrowNativeError("Invalid function id (%X)", params[2]); ds@621: } ds@621: ds@621: s_pCallable = static_cast(s_pFunction); ds@621: ds@621: s_CallStarted = true; ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallStartForward(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: Handle_t hndl; ds@621: HandleError err; ds@621: IForward *pForward; ds@621: ds@621: if (s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot start a call while one is already in progress"); ds@621: } ds@621: ds@621: hndl = static_cast(params[1]); ds@621: ds@621: if ((err=g_HandleSys.ReadHandle(hndl, g_GlobalFwdType, NULL, (void **)&pForward)) ds@621: != HandleError_None) ds@621: { ds@621: return pContext->ThrowNativeError("Invalid forward handle %x (error %d)", hndl, err); ds@621: } ds@621: ds@621: s_pForward = pForward; ds@621: ds@621: s_pCallable = static_cast(pForward); ds@621: ds@621: s_CallStarted = true; ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallPushCell(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: int err; ds@621: ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot push parameters when there is no call in progress"); ds@621: } ds@621: ds@621: err = s_pCallable->PushCell(params[1]); ds@621: ds@621: if (err) ds@621: { ds@621: s_pCallable->Cancel(); ds@621: ResetCall(); ds@621: return pContext->ThrowNativeErrorEx(err, NULL); ds@621: } ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallPushCellRef(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: int err; ds@621: cell_t *addr; ds@621: ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot push parameters when there is no call in progress"); ds@621: } ds@621: ds@621: pContext->LocalToPhysAddr(params[1], &addr); ds@621: ds@621: err = s_pCallable->PushCellByRef(addr); ds@621: ds@621: if (err) ds@621: { ds@621: s_pCallable->Cancel(); ds@621: ResetCall(); ds@621: return pContext->ThrowNativeErrorEx(err, NULL); ds@621: } ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallPushFloat(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: int err; ds@621: ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot push parameters when there is no call in progress"); ds@621: } ds@621: ds@621: err = s_pCallable->PushFloat(sp_ctof(params[1])); ds@621: ds@621: if (err) ds@621: { ds@621: s_pCallable->Cancel(); ds@621: ResetCall(); ds@621: return pContext->ThrowNativeErrorEx(err, NULL); ds@621: } ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallPushFloatRef(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: int err; ds@621: cell_t *addr; ds@621: ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot push parameters when there is no call in progress"); ds@621: } ds@621: ds@621: pContext->LocalToPhysAddr(params[1], &addr); ds@621: ds@621: err = s_pCallable->PushFloatByRef(reinterpret_cast(addr)); ds@621: ds@621: if (err) ds@621: { ds@621: s_pCallable->Cancel(); ds@621: ResetCall(); ds@621: return pContext->ThrowNativeErrorEx(err, NULL); ds@621: } ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallPushArray(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: int err; ds@621: cell_t *addr; ds@621: ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot push parameters when there is no call in progress"); ds@621: } ds@621: ds@621: pContext->LocalToPhysAddr(params[1], &addr); ds@621: faluco@629: err = s_pCallable->PushArray(addr, params[2]); ds@621: ds@621: if (err) ds@621: { ds@621: s_pCallable->Cancel(); ds@621: ResetCall(); ds@621: return pContext->ThrowNativeErrorEx(err, NULL); ds@621: } ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallPushArrayEx(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: int err; ds@621: cell_t *addr; ds@621: ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot push parameters when there is no call in progress"); ds@621: } ds@621: ds@621: pContext->LocalToPhysAddr(params[1], &addr); ds@621: ds@621: err = s_pCallable->PushArray(addr, params[2], params[3]); ds@621: ds@621: if (err) ds@621: { ds@621: s_pCallable->Cancel(); ds@621: ResetCall(); ds@621: return pContext->ThrowNativeErrorEx(err, NULL); ds@621: } ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallPushString(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: int err; ds@621: char *value; ds@621: ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot push parameters when there is no call in progress"); ds@621: } ds@621: ds@621: pContext->LocalToString(params[1], &value); ds@621: ds@621: err = s_pCallable->PushString(value); ds@621: ds@621: if (err) ds@621: { ds@621: s_pCallable->Cancel(); ds@621: ResetCall(); ds@621: return pContext->ThrowNativeErrorEx(err, NULL); ds@621: } ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallPushStringEx(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: int err; ds@621: char *value; ds@621: ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot push parameters when there is no call in progress"); ds@621: } ds@621: ds@621: pContext->LocalToString(params[1], &value); ds@621: ds@621: err = s_pCallable->PushStringEx(value, params[2], params[3], params[4]); ds@621: ds@621: if (err) ds@621: { ds@621: s_pCallable->Cancel(); ds@621: ResetCall(); ds@621: return pContext->ThrowNativeErrorEx(err, NULL); ds@621: } ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: static cell_t sm_CallFinish(IPluginContext *pContext, const cell_t *params) ds@621: { faluco@629: int err = SP_ERROR_NOT_RUNNABLE; ds@621: cell_t *result; ds@621: ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot finish call when there is no call in progress"); ds@621: } ds@621: ds@621: pContext->LocalToPhysAddr(params[1], &result); ds@621: ds@621: if (s_pFunction) ds@621: { ds@621: IPluginFunction *pFunction = s_pFunction; ds@1082: ResetCall(); ds@621: err = pFunction->Execute(result); ds@621: } else if (s_pForward) { ds@621: IForward *pForward = s_pForward; ds@1082: ResetCall(); ds@621: err = pForward->Execute(result, NULL); ds@621: } ds@621: ds@621: return err; ds@621: } ds@621: ds@621: static cell_t sm_CallCancel(IPluginContext *pContext, const cell_t *params) ds@621: { ds@621: if (!s_CallStarted) ds@621: { ds@621: return pContext->ThrowNativeError("Cannot cancel call when there is no call in progress"); ds@621: } ds@621: ds@621: s_pCallable->Cancel(); ds@621: ResetCall(); ds@621: ds@621: return 1; ds@621: } ds@621: ds@621: REGISTER_NATIVES(functionNatives) ds@621: { ds@621: {"GetFunctionByName", sm_GetFunctionByName}, ds@621: {"CreateGlobalForward", sm_CreateGlobalForward}, ds@621: {"CreateForward", sm_CreateForward}, ds@621: {"GetForwardFunctionCount", sm_GetForwardFunctionCount}, ds@621: {"AddToForward", sm_AddToForward}, ds@621: {"RemoveFromForward", sm_RemoveFromForward}, ds@621: {"RemoveAllFromForward", sm_RemoveAllFromForward}, ds@621: {"Call_StartFunction", sm_CallStartFunction}, ds@621: {"Call_StartForward", sm_CallStartForward}, ds@621: {"Call_PushCell", sm_CallPushCell}, ds@621: {"Call_PushCellRef", sm_CallPushCellRef}, ds@621: {"Call_PushFloat", sm_CallPushFloat}, ds@621: {"Call_PushFloatRef", sm_CallPushFloatRef}, ds@621: {"Call_PushArray", sm_CallPushArray}, ds@621: {"Call_PushArrayEx", sm_CallPushArrayEx}, ds@621: {"Call_PushString", sm_CallPushString}, ds@621: {"Call_PushStringEx", sm_CallPushStringEx}, ds@621: {"Call_Finish", sm_CallFinish}, ds@621: {"Call_Cancel", sm_CallCancel}, ds@621: {NULL, NULL}, ds@621: };