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callfunc_push_* params num checks

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callfunc_push_byref & callfunc_push_str: more references to one variable fix
This commit is contained in:
Pavol Marko 2004-03-07 12:21:52 +00:00
parent c8b722efe7
commit cc277c1bf9
1 changed files with 58 additions and 5 deletions
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61
amxmodx/amxmod.cpp
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@ -2038,14 +2038,13 @@ struct CallFunc_ParamInfo
cell size; // byref size
};
// :TODO: Overflow possible
#define CALLFUNC_MAXPARAMS 64 /* Maximal params number */
cell g_CallFunc_Params[CALLFUNC_MAXPARAMS] = {0}; // Params
CallFunc_ParamInfo g_CallFunc_ParamInfo[CALLFUNC_MAXPARAMS] = {0}; // Flags
int g_CallFunc_CurParam = 0; // Current param id
#define CALLFUNC_FLAG_BYREF 1 /* Byref flag so that mem is released */
#define CALLFUNC_FLAG_BYREF_REUSED 2 /* Reused byref */
// native callfunc_begin(const func[], const plugin[]="");
static cell AMX_NATIVE_CALL callfunc_begin(AMX *amx, cell *params)
@ -2059,7 +2058,6 @@ static cell AMX_NATIVE_CALL callfunc_begin(AMX *amx, cell *params)
return 0;
}
int numparams = *params / sizeof(cell);
int len;
char *pluginStr = get_amxstring(amx, params[2], 0, len);
char *funcStr = get_amxstring(amx, params[1], 1, len);
@ -2125,7 +2123,7 @@ static cell AMX_NATIVE_CALL callfunc_end(AMX *amx, cell *params)
return 0;
}
// process byref params
// process byref params (not byref_reused)
for (int i = 0; i < curParam; ++i)
{
if (gparamInfo[i].flags & CALLFUNC_FLAG_BYREF)
@ -2163,6 +2161,13 @@ static cell callfunc_push_byval(AMX *amx, cell *params)
return 0;
}
if (g_CallFunc_CurParam == CALLFUNC_MAXPARAMS)
{
UTIL_Log("[AMXX] callfunc_push_xxx: maximal parameters num: %d", CALLFUNC_MAXPARAMS);
amx_RaiseError(amx, AMX_ERR_NATIVE);
return 0;
}
g_CallFunc_ParamInfo[g_CallFunc_CurParam].flags = 0;
g_CallFunc_Params[g_CallFunc_CurParam++] = params[1];
@ -2182,6 +2187,30 @@ static cell callfunc_push_byref(AMX *amx, cell *params)
return 0;
}
if (g_CallFunc_CurParam == CALLFUNC_MAXPARAMS)
{
UTIL_Log("[AMXX] callfunc_push_xxx: maximal parameters num: %d", CALLFUNC_MAXPARAMS);
amx_RaiseError(amx, AMX_ERR_NATIVE);
return 0;
}
// search for the address; if it is found, dont create a new copy
for (int i = 0; i < g_CallFunc_CurParam; ++i)
{
if ((g_CallFunc_ParamInfo[i].flags & CALLFUNC_FLAG_BYREF) &&
(g_CallFunc_ParamInfo[i].byrefAddr == params[1]))
{
// the byrefAddr and size params should not be used; set them anyways...
g_CallFunc_ParamInfo[g_CallFunc_CurParam].flags = CALLFUNC_FLAG_BYREF_REUSED;
g_CallFunc_ParamInfo[g_CallFunc_CurParam].byrefAddr = params[1];
g_CallFunc_ParamInfo[g_CallFunc_CurParam].size = 1;
g_CallFunc_Params[g_CallFunc_CurParam++] = g_CallFunc_Params[i];
// we are done
return 0;
}
}
// not found; create an own copy
// allocate memory
cell *phys_addr;
cell amx_addr;
@ -2216,6 +2245,30 @@ static cell callfunc_push_str(AMX *amx, cell *params)
return 0;
}
if (g_CallFunc_CurParam == CALLFUNC_MAXPARAMS)
{
UTIL_Log("[AMXX] callfunc_push_xxx: maximal parameters num: %d", CALLFUNC_MAXPARAMS);
amx_RaiseError(amx, AMX_ERR_NATIVE);
return 0;
}
// search for the address; if it is found, dont create a new copy
for (int i = 0; i < g_CallFunc_CurParam; ++i)
{
if ((g_CallFunc_ParamInfo[i].flags & CALLFUNC_FLAG_BYREF) &&
(g_CallFunc_ParamInfo[i].byrefAddr == params[1]))
{
// the byrefAddr and size params should not be used; set them anyways...
g_CallFunc_ParamInfo[g_CallFunc_CurParam].flags = CALLFUNC_FLAG_BYREF_REUSED;
g_CallFunc_ParamInfo[g_CallFunc_CurParam].byrefAddr = params[1];
g_CallFunc_ParamInfo[g_CallFunc_CurParam].size = 1;
g_CallFunc_Params[g_CallFunc_CurParam++] = g_CallFunc_Params[i];
// we are done
return 0;
}
}
// not found; create an own copy
// get the string and its length
int len;
char *str = get_amxstring(amx, params[1], 0, len);