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/*
* Part of DNS zone file validator `validns`.
*
* Copyright 2011-2014 Anton Berezin <tobez@tobez.org>
* Modified BSD license.
* (See LICENSE file in the distribution.)
*
*/
#include <sys/types.h>
#include <stdio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include "common.h"
#include "textparse.h"
#include "mempool.h"
#include "carp.h"
#include "rr.h"
static struct rr* soa_parse(char *name, long ttl, int type, char *s)
{
struct rr_soa *rr = getmem(sizeof(*rr));
long long i;
rr->mname = extract_name(&s, "mname", 0);
if (!rr->mname) return NULL;
rr->rname = extract_name(&s, "rname", 0);
if (!rr->rname) return NULL;
i = extract_integer(&s, "serial", NULL);
if (i < 0) return NULL;
if (i > 4294967295UL) return bitch("serial is out of range");
rr->serial = i;
rr->refresh = extract_timevalue(&s, "refresh");
if (rr->refresh < 0) return NULL;
rr->retry = extract_timevalue(&s, "retry");
if (rr->retry < 0) return NULL;
rr->expire = extract_timevalue(&s, "expire");
if (rr->expire < 0) return NULL;
rr->minimum = extract_timevalue(&s, "minimum");
if (rr->minimum < 0) return NULL;
if (ttl < 0 && G.opt.soa_minttl_as_default_ttl) {
ttl = rr->minimum;
}
if (*s) {
return bitch("garbage after valid SOA data");
}
return store_record(type, name, ttl, rr);
}
static char* soa_human(struct rr *rrv)
{
RRCAST(soa);
char s[1024];
snprintf(s, 1024, "%s %s %u %d %d %d %d",
rr->mname, rr->rname, rr->serial,
rr->refresh, rr->retry, rr->expire, rr->minimum);
return quickstrdup_temp(s);
}
static struct binary_data soa_wirerdata(struct rr *rrv)
{
RRCAST(soa);
return compose_binary_data("dd44444", 1,
name2wire_name(rr->mname), name2wire_name(rr->rname),
rr->serial, rr->refresh, rr->retry,
rr->expire, rr->minimum);
}
static void *soa_validate(struct rr *rrv)
{
RRCAST(soa);
if (strchr(rr->mname, '/') != NULL)
return moan(rr->rr.file_name, rr->rr.line, "MNAME contains '/'");
if (strchr(rr->rname, '/') != NULL)
return moan(rr->rr.file_name, rr->rr.line, "RNAME contains '/'");
return NULL;
}
struct rr_methods soa_methods = { soa_parse, soa_human, soa_wirerdata, NULL, soa_validate };
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