amxmodx/dlls/hamsandwich/pdata.cpp

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/* Ham Sandwich
* Copyright 2007
* By the AMX Mod X Development Team
*
* Ham Sandwich 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.
*
* Ham Sandwich 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 Ham Sandwich; 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 Ham Sandwich 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 "amxxmodule.h"
#include "offsets.h"
#include "NEW_Util.h"
#include "ham_utils.h"
inline edict_t* INDEXENT2( int iEdictNum )
{
if (iEdictNum >= 1 && iEdictNum <= gpGlobals->maxClients)
return MF_GetPlayerEdict(iEdictNum);
else
return (*g_engfuncs.pfnPEntityOfEntIndex)(iEdictNum);
}
#ifdef DONT_TOUCH_THIS_AGAIN_BAIL
#define FM_CHECK_ENTITY(x) \
if (x < 0 || x > gpGlobals->maxEntities) { \
MF_LogError(amx, AMX_ERR_NATIVE, "Entity out of range (%d)", x); \
return 0; \
} else { \
if (x <= gpGlobals->maxClients) { \
if (!MF_IsPlayerIngame(x)) { \
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid player %d (not in-game)", x); \
return 0; \
} \
} else { \
if (x != 0 && FNullEnt(INDEXENT(x))) { \
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid entity %d", x); \
return 0; \
} \
} \
}
#endif
#define FM_CHECK_ENTITY(x) \
if (x < 0 || x > gpGlobals->maxEntities) { \
MF_LogError(amx, AMX_ERR_NATIVE, "Entity out of range (%d)", x); \
return 0; \
} else if (x != 0 && FNullEnt(INDEXENT2(x))) { \
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid entity %d", x); \
return 0; \
}
// Return -1 on null, -2 on invalid, and the the index of any other.
static cell AMX_NATIVE_CALL get_pdata_cbase_safe(AMX *amx, cell *params)
{
int index=params[1];
FM_CHECK_ENTITY(index);
int iOffset=params[2];
#ifdef __linux__
iOffset += params[3];
#elif defined __APPLE__
// Use Linux offset in older plugins
if (params[0] / sizeof(cell) == 3)
iOffset += params[3];
else
iOffset += params[4];
#endif
if (iOffset <0)
{
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid offset provided. (got: %d)", iOffset);
return 0;
}
void *ptr=*((void **)((int *)INDEXENT_NEW(index)->pvPrivateData + iOffset));
if (ptr == 0)
{
return -1;
}
for (int i=0; i<gpGlobals->maxEntities; ++i)
{
if (ptr == INDEXENT_NEW(i)->pvPrivateData)
{
return i;
}
}
return -2;
}
static cell AMX_NATIVE_CALL get_pdata_cbase(AMX *amx, cell *params)
{
int index=params[1];
FM_CHECK_ENTITY(index);
int iOffset=params[2];
#ifdef __linux__
iOffset += params[3];
#elif defined __APPLE__
// Use Linux offset in older plugins
if (params[0] / sizeof(cell) == 3)
iOffset += params[3];
else
iOffset += params[4];
#endif
if (iOffset <0)
{
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid offset provided. (got: %d)", iOffset);
return 0;
}
void *ptr=*((void **)((int *)INDEXENT_NEW(index)->pvPrivateData + iOffset));
return PrivateToIndex(ptr);
}
static cell AMX_NATIVE_CALL set_pdata_cbase(AMX *amx, cell *params)
{
int index=params[1];
FM_CHECK_ENTITY(index);
int target=params[3];
if (target != -1)
{
FM_CHECK_ENTITY(target);
}
int iOffset=params[2];
#ifdef __linux__
iOffset += params[4];
#elif defined __APPLE__
// Use Linux offset in older plugins
if (params[0] / sizeof(cell) == 4)
iOffset += params[4];
else
iOffset += params[5];
#endif
if (iOffset <0)
{
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid offset provided. (got: %d)", iOffset);
return 0;
}
if (target == -1)
{
*((void **)((int *)INDEXENT_NEW(index)->pvPrivateData + iOffset)) = NULL;
}
else
{
*((void **)((int *)INDEXENT_NEW(index)->pvPrivateData + iOffset)) = INDEXENT_NEW(target)->pvPrivateData;
}
return 1;
}
AMX_NATIVE_INFO pdata_natives_safe[] =
{
{ "get_pdata_cbase_safe", get_pdata_cbase_safe },
{ NULL, NULL }
};
AMX_NATIVE_INFO pdata_natives[] =
{
{ "get_pdata_cbase", get_pdata_cbase },
{ "set_pdata_cbase", set_pdata_cbase },
{ NULL, NULL }
};