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/*
* Filters: utility functions
*
* Copyright 1998 Pavel Machek <pavel@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include "nest/bird.h"
#include "conf/conf.h"
#include "filter/filter.h"
#define P(a,b) ((a<<8) | b)
struct f_inst *
f_new_inst(void)
{
struct f_inst * ret;
ret = cfg_alloc(sizeof(struct f_inst));
ret->code = ret->aux = 0;
ret->arg1 = ret->arg2 = ret->next = NULL;
ret->lineno = conf_lino;
return ret;
}
struct f_inst *
f_new_dynamic_attr(int type, int f_type, int code)
{
struct f_inst *f = f_new_inst();
f->aux = type;
f->a2.i = code;
return f;
}
/*
* Generate set_dynamic( operation( get_dynamic(), argument ) )
*/
struct f_inst *
f_generate_complex(int operation, int operation_aux, struct f_inst *dyn, struct f_inst *argument)
{
struct f_inst *set_dyn = f_new_inst(),
*oper = f_new_inst(),
*get_dyn = dyn;
*set_dyn = *get_dyn;
get_dyn->code = P('e','a');
oper->code = operation;
oper->aux = operation_aux;
oper->a1.p = get_dyn;
oper->a2.p = argument;
set_dyn->code = P('e','S');
set_dyn->a1.p = oper;
return set_dyn;
}
char *
filter_name(struct filter *filter)
{
if (!filter)
return "ACCEPT";
else if (filter == FILTER_REJECT)
return "REJECT";
else
return filter->name;
}
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