/*
 * Part of DNS zone file validator `validns`.
 *
 * Copyright 2025-2026 OARC, Inc.
 * Copyright 2011-2025 Anton Berezin <tobez@tobez.org>
 * Modified BSD license.
 * (See LICENSE file in the distribution.)
 *
 */
#include <sys/types.h>
#include <string.h>
#include <stdio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <ctype.h>

#include "common.h"
#include "textparse.h"
#include "mempool.h"
#include "carp.h"
#include "rr.h"

/* XXX Does not accept multiple character-strings */

static struct rr* x25_parse(char* name, long ttl, int type, char* s)
{
    struct rr_x25* rr = getmem(sizeof(*rr));
    int            i;

    rr->psdn_address = extract_text(&s, "PSDN-address");
    if (rr->psdn_address.length < 0)
        return NULL;
    if (rr->psdn_address.length > 255)
        return bitch("PSDN-address too long");
    if (rr->psdn_address.length < 4)
        return bitch("PSDN-address too short");
    for (i = 0; i < rr->psdn_address.length; i++) {
        if (!isdigit(rr->psdn_address.data[i]))
            return bitch("PSDN-address contains non-digits");
    }

    if (*s) {
        return bitch("garbage after valid X25 data");
    }

    return store_record(type, name, ttl, rr);
}

static char* x25_human(struct rr* rrv)
{
    RRCAST(x25);

    return rr->psdn_address.data;
}

static struct binary_data x25_wirerdata(struct rr* rrv)
{
    RRCAST(x25);

    return compose_binary_data("b", 1, rr->psdn_address);
}

struct rr_methods x25_methods = { x25_parse, x25_human, x25_wirerdata, NULL, NULL };
