void *DCERPC_FragAlloc(void *p, u_int16_t old_size, u_int16_t *new_size)
{
u_int16_t add_size = *new_size - old_size;
if ( (((u_int32_t) add_size) + _total_memory) > _memcap )
{
/* Raise alert */
if ( _alert_memcap )
{
DCERPC_GenerateAlert(DCERPC_EVENT_MEMORY_OVERFLOW,
DCERPC_EVENT_MEMORY_OVERFLOW_STR);
}
add_size = (u_int16_t) (_memcap - _total_memory);
}
_total_memory += add_size;
*new_size = old_size + add_size;
if ( !p )
{
return malloc(*new_size);
}
return realloc(p, *new_size);
}
void *DCERPC_FragAlloc(void *p, u_int16_t old_size, u_int16_t *new_size)
{
u_int16_t add_size;
void *new_buf = NULL;
if (old_size >= *new_size)
{
*new_size = old_size;
return p;
}
add_size = *new_size - old_size;
if ( (((u_int32_t) add_size) + _total_memory) > _memcap )
{
/* Raise alert */
if ( _alert_memcap )
{
DCERPC_GenerateAlert(DCERPC_EVENT_MEMORY_OVERFLOW,
DCERPC_EVENT_MEMORY_OVERFLOW_STR);
}
add_size = (u_int16_t) (_memcap - _total_memory);
}
*new_size = old_size + add_size;
if (*new_size == old_size)
return p;
new_buf = calloc(*new_size, 1);
if (new_buf == NULL)
{
if (p != NULL)
{
DCERPC_FragFree(p, old_size);
}
return NULL;
}
if (p != NULL)
{
int ret;
ret = SafeMemcpy(new_buf, p, old_size, new_buf, (u_int8_t *)new_buf + *new_size);
if (ret == 0)
{
*new_size = old_size;
free(new_buf);
return p;
}
DCERPC_FragFree(p, old_size);
}
/* DCERPC_FragFree will decrement old_size from _total_memory so
* we add the *new_size */
_total_memory += *new_size;
return new_buf;
}