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