amxmodx/amxmodx/CPlugin.cpp
2005-09-11 03:58:38 +00:00

347 lines
7.9 KiB
C++
Executable File

/* AMX Mod X
*
* by the AMX Mod X Development Team
* originally developed by OLO
*
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* In addition, as a special exception, the author gives permission to
* link the code of this program with the Half-Life Game Engine ("HL
* Engine") and Modified Game Libraries ("MODs") developed by Valve,
* L.L.C ("Valve"). You must obey the GNU General Public License in all
* respects for all of the code used other than the HL Engine and MODs
* from Valve. If you modify this file, you may extend this exception
* to your version of the file, but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from your
* version.
*/
#include "amxmodx.h"
#include "CPlugin.h"
#include "CForward.h"
#include "CFile.h"
#include "amx.h"
#include "natives.h"
#include "debugger.h"
extern const char *no_function;
CPluginMngr::CPlugin* CPluginMngr::loadPlugin(const char* path, const char* name, char* error, int debug)
{
CPlugin** a = &head;
while( *a ) a = &(*a)->next;
*a = new CPlugin(pCounter++, path, name, error, debug);
return (*a);
}
void CPluginMngr::unloadPlugin( CPlugin** a ) {
CPlugin* next = (*a)->next;
delete *a;
*a = next;
--pCounter;
}
void CPluginMngr::Finalize()
{
if (m_Finalized)
return;
pNatives = BuildNativeTable();
CPlugin *a = head;
while (a)
{
if (a->getStatusCode() == ps_running)
{
amx_Register(a->getAMX(), pNatives, -1);
a->Finalize();
}
a=a->next;
}
m_Finalized = true;
}
int CPluginMngr::loadPluginsFromFile( const char* filename )
{
char file[256];
FILE *fp = fopen(build_pathname_r(file, sizeof(file)-1, "%s",filename) , "rt");
if ( !fp )
{
AMXXLOG_Log( "[AMXX] Plugins list not found (file \"%s\")",filename);
return 1;
}
// Find now folder
char pluginName[256], error[256], debug[256];
int debugFlag = 0;
const char *pluginsDir = get_localinfo("amxx_pluginsdir", "addons/amxmodx/plugins");
String line;
while ( !feof(fp) )
{
pluginName[0] = '\0';
debug[0] = '\0';
debugFlag = 0;
line.clear();
line._fread(fp);
sscanf(line.c_str(),"%s %s",pluginName, debug);
if (!isalnum(*pluginName)) continue;
if (isalnum(*debug) && strcmp(debug, "debug") == 0)
{
debugFlag = 1;
}
CPlugin* plugin = loadPlugin( pluginsDir , pluginName , error, debugFlag);
if (plugin->getStatusCode() == ps_bad_load)
{
char errorMsg[255];
sprintf(errorMsg, "%s (plugin \"%s\")", error, pluginName);
plugin->setError(errorMsg);
AMXXLOG_Log("[AMXX] %s", plugin->getError());
}
}
fclose(fp);
return pCounter;
}
void CPluginMngr::clear() {
CPlugin**a = &head;
while ( *a )
unloadPlugin(a);
m_Finalized = false;
if (pNatives)
{
delete [] pNatives;
pNatives = NULL;
}
}
CPluginMngr::CPlugin* CPluginMngr::findPluginFast(AMX *amx)
{
return (CPlugin*)(amx->userdata[UD_FINDPLUGIN]);
}
CPluginMngr::CPlugin* CPluginMngr::findPlugin(AMX *amx) {
CPlugin*a = head;
while ( a && &a->amx != amx )
a=a->next;
return a;
}
CPluginMngr::CPlugin* CPluginMngr::findPlugin(int index){
CPlugin*a = head;
while ( a && index--)
a=a->next;
return a;
}
CPluginMngr::CPlugin* CPluginMngr::findPlugin(const char* name) {
if (!name) return 0;
int len = strlen(name);
if (!len) return 0;
CPlugin*a = head;
while( a && strncmp(a->name.c_str(), name,len) )
a=a->next;
return a;
}
const char* CPluginMngr::CPlugin::getStatus() const {
switch(status){
case ps_running:
{
if (m_Debug)
{
return "debug";
} else {
return "running";
}
break;
}
case ps_paused: return "paused";
case ps_bad_load: return "bad load";
case ps_stopped: return "stopped";
case ps_locked: return "locked";
}
return "error";
}
CPluginMngr::CPlugin::CPlugin(int i, const char* p,const char* n, char* e, int d) : name(n), title(n) {
const char* unk = "unknown";
title.assign(unk);
author.assign(unk);
version.assign(unk);
char file[256];
char* path = build_pathname_r(file, sizeof(file)-1, "%s/%s",p,n);
code = 0;
memset(&amx, 0, sizeof(AMX));
int err = load_amxscript(&amx,&code,path,e, d);
if ( err == AMX_ERR_NONE )
{
status = ps_running;
} else {
status = ps_bad_load;
}
amx.userdata[UD_FINDPLUGIN] = this;
paused_fun = 0;
next = 0;
id = i;
if (status == ps_running)
{
m_PauseFwd = registerSPForwardByName(&amx, "plugin_pause");
m_UnpauseFwd = registerSPForwardByName(&amx, "plugin_unpause");
if (amx.flags & AMX_FLAG_DEBUG)
{
m_Debug = true;
} else {
m_Debug = false;
}
}
}
CPluginMngr::CPlugin::~CPlugin( )
{
unload_amxscript( &amx, &code );
}
int AMXAPI native_handler(AMX *amx, int index)
{
Handler *pHandler = (Handler *)amx->userdata[UD_HANDLER];
char name[sNAMEMAX+1];
amx_GetNative(amx, index, name);
return pHandler->HandleNative(name, index, 0);
}
static cell AMX_NATIVE_CALL invalid_native(AMX *amx, cell *params)
{
//A script has accidentally called an invalid native! give them a
// first chance to block the resulting error.
Handler *pHandler = (Handler *)amx->userdata[UD_HANDLER];
//this should never happen
if (!pHandler)
{
LogError(amx, AMX_ERR_INVNATIVE, "Invalid native attempt");
return 0;
}
//this should never happen because this native won't be called
// if the plugin isn't filtering.
if (!pHandler->IsNativeFiltering())
{
LogError(amx, AMX_ERR_INVNATIVE, "Invalid native attempt");
return 0;
}
char name[sNAMEMAX+1];
int native = amx->usertags[UT_NATIVE];
int err = amx_GetNative(amx, native, name);
if (err != AMX_ERR_NONE)
name[0] = '\0';
//1 - because we're trapping usage
if (!pHandler->HandleNative(name, native, 1))
{
LogError(amx, AMX_ERR_INVNATIVE, NULL);
return 0;
}
//Someday maybe allow native filters to write their own return value?
return 0;
}
void CPluginMngr::CPlugin::Finalize()
{
char buffer[128];
int old_status = status;
if (CheckModules(&amx, buffer))
{
if ( amx_Register(&amx, core_Natives, -1) != AMX_ERR_NONE )
{
Handler *pHandler = (Handler *)amx.userdata[UD_HANDLER];
int res = 0;
if (pHandler->IsNativeFiltering())
res = amx_CheckNatives(&amx, native_handler);
if (!res)
{
status = ps_bad_load;
sprintf(buffer, "Plugin uses an unknown function (name \"%s\") - check your modules.ini.", no_function);
errorMsg.assign(buffer);
amx.error = AMX_ERR_NOTFOUND;
} else {
amx_RegisterToAny(&amx, invalid_native);
}
}
} else {
status = ps_bad_load;
errorMsg.assign(buffer);
amx.error = AMX_ERR_NOTFOUND;
}
if (old_status != status)
{
AMXXLOG_Log("[AMXX] Plugin \"%s\" failed to load: %s", name.c_str(), errorMsg.c_str());
}
}
void CPluginMngr::CPlugin::pauseFunction( int id )
{
}
void CPluginMngr::CPlugin::unpauseFunction( int id )
{
}
void CPluginMngr::CPlugin::setStatus( int a ) {
status = a;
g_commands.clearBufforedInfo(); // ugly way
}
// Pause a plugin
void CPluginMngr::CPlugin::pausePlugin()
{
if (isValid())
{
// call plugin_pause if provided
if (m_PauseFwd != -1)
executeForwards(m_PauseFwd);
setStatus(ps_paused);
}
}
// Unpause a plugin
void CPluginMngr::CPlugin::unpausePlugin()
{
if (isValid())
{
// set status first so the function will be marked executable
setStatus(ps_running);
// call plugin_unpause if provided
if (m_UnpauseFwd != -1)
executeForwards(m_UnpauseFwd);
}
}