93 lines
1.7 KiB
C
93 lines
1.7 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 <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/signal.h>
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#include "nest/bird.h"
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#include "lib/lists.h"
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#include "lib/resource.h"
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#include "lib/socket.h"
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#include "nest/route.h"
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#include "nest/protocol.h"
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#include "nest/iface.h"
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#include "conf/conf.h"
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#include "filter/filter.h"
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struct f_instruction *last_func = NULL;
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static void
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interpret(struct f_instruction *what)
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{
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struct symbol *sym;
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if (!what)
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return;
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switch(what->code) {
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case ',':
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interpret(what->arg1);
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interpret(what->arg2);
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break;
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case '=':
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sym = what->arg1;
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sym->aux = (int) what->arg2;
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break;
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case 'p':
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sym = what->arg1;
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switch(sym->class) {
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case SYM_VARIABLE_INT:
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printf( "Printing: %d\n", sym->aux );
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break;
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default:
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printf( "Unknown type passed to print\n" );
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break;
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}
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break;
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case 'D':
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printf( "DEBUGGING PRINT\n" );
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break;
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case '0':
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printf( "No operation\n" );
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break;
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}
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interpret(what->next);
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}
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void
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filters_postconfig(void)
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{
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if (!last_func)
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printf( "No function defined\n" );
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else {
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interpret(last_func);
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}
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}
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struct f_instruction *
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f_new_inst(void)
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{
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struct f_instruction * ret;
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ret = cfg_alloc(sizeof(struct f_instruction));
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ret->code = 0;
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ret->arg1 = ret->arg2 = ret->next = NULL;
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return ret;
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}
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int
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f_run(struct symbol *filter, struct rte *rtein, struct rte **rteout)
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{
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struct f_instruction *inst;
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debug( "Running filter `%s'...", filter->name );
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inst = filter->def;
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interpret(inst);
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debug( "done\n" );
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return F_ACCEPT;
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}
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