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/*
** Copyright 1998 - 2004 Double Precision, Inc.
** See COPYING for distribution information.
*/
#include "rfc1035.h"
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <arpa/inet.h>
static char *dumpsoa(struct rfc1035_reply *r, struct rfc1035_rr *rr)
{
char name1[RFC1035_MAXNAMESIZE+1], name2[RFC1035_MAXNAMESIZE+1];
char *p;
char timebuf[RFC1035_MAXTIMEBUFSIZE+1];
rfc1035_replyhostname(r, rr->rr.soa.rname_label, name1);
rfc1035_replyhostname(r, rr->rr.soa.mname_label, name2);
p=(char *)malloc(strlen(name1)+strlen(name2)+500);
if (!p) return (0);
strcat(strcat(strcat(strcpy(p, name2), ". "), name1), ". (\n\t\t\t\t");
sprintf(p+strlen(p), "%lu ; serial\n",
(unsigned long)rr->rr.soa.serial);
sprintf(p+strlen(p), "\t\t\t\t%s ; refresh\n",
rfc1035_fmttime( rr->rr.soa.refresh, timebuf));
sprintf(p+strlen(p), "\t\t\t\t%s ; retry\n",
rfc1035_fmttime( rr->rr.soa.retry, timebuf));
sprintf(p+strlen(p), "\t\t\t\t%s ; expire\n",
rfc1035_fmttime( rr->rr.soa.expire, timebuf));
sprintf(p+strlen(p), "\t\t\t\t%s) ; minimum",
rfc1035_fmttime( rr->rr.soa.minimum, timebuf));
return (p);
}
static void str_cat(char *p, const char **q)
{
int l=(int)(unsigned char)*(*q)++;
while (*p) p++;
memcpy(p, *q, l);
p[l]=0;
*q += l;
}
static char *dumptxt(struct rfc1035_reply *r, struct rfc1035_rr *rr)
{
int len=1;
char *p=0;
int pass;
const char *cp;
for (pass=0; pass<2; pass++)
{
if (pass && (p=(char *)malloc(len)) == 0) return (0);
if (pass) *p=0;
cp=rr->rdata;
while (cp < rr->rdata+rr->rdlength)
{
int l=(int)(unsigned char)*cp;
if (l >= rr->rdata+rr->rdlength-cp) return (0);
if (pass == 0)
cp += l+1;
len += l+4;
if (pass && *p)
strcat(p, "\n\t\t\t");
if (pass)
str_cat(p, &cp);
}
}
return (p);
}
char *rfc1035_dumprrdata(struct rfc1035_reply *r, struct rfc1035_rr *rr)
{
if (rr->rrclass != RFC1035_CLASS_IN) return (0);
switch (rr->rrtype) {
case RFC1035_TYPE_A:
{
char ipbuf[RFC1035_NTOABUFSIZE];
rfc1035_ntoa_ipv4(&rr->rr.inaddr, ipbuf);
return (strdup(ipbuf));
}
#if RFC1035_IPV6
case RFC1035_TYPE_AAAA:
{
char ipbuf[INET6_ADDRSTRLEN];
if (inet_ntop(AF_INET6, &rr->rr.in6addr,
ipbuf, sizeof(ipbuf)) == 0)
ipbuf[0]=0;
return (strdup(ipbuf));
}
#endif
case RFC1035_TYPE_TXT:
return (dumptxt(r, rr));
case RFC1035_TYPE_CNAME:
case RFC1035_TYPE_MB:
case RFC1035_TYPE_MG:
case RFC1035_TYPE_MR:
case RFC1035_TYPE_MD:
case RFC1035_TYPE_MF:
case RFC1035_TYPE_NS:
case RFC1035_TYPE_PTR:
{
char p[RFC1035_MAXNAMESIZE+1], *q;
rfc1035_replyhostname(r, rr->rr.domainname, p);
if ((q=(char *)malloc(strlen(p)+2)) != 0)
strcat(strcpy(q, p), ".");
return (q);
}
case RFC1035_TYPE_SOA:
return (dumpsoa(r, rr));
break;
case RFC1035_TYPE_MX:
{
char p[RFC1035_MAXNAMESIZE+1], *q;
rfc1035_replyhostname(r, rr->rr.mx.mx_label, p);
if ((q=(char *)malloc(strlen(p)+40)) != 0)
{
sprintf(q, "%d %s.",
(int)rr->rr.mx.preference, p);
}
return (q);
}
case RFC1035_TYPE_HINFO:
{
char *p=malloc( (int)(unsigned char)*rr->rr.hinfo.hinfo_str+
(int)(unsigned char)*rr->rr.hinfo.os_str+10);
if (p)
{
const char *q=rr->rr.hinfo.hinfo_str;
*p=0;
str_cat(p, &q);
strcat(p, ", ");
q=rr->rr.hinfo.os_str;
str_cat(p, &q);
}
return (p);
}
case RFC1035_TYPE_MINFO:
{
char p[RFC1035_MAXNAMESIZE+1], t[RFC1035_MAXNAMESIZE+1], *q;
rfc1035_replyhostname(r, rr->rr.minfo.rmailbx_label, p);
rfc1035_replyhostname(r, rr->rr.minfo.emailbx_label, t);
if ((q=(char *)malloc(strlen(p)+strlen(t)+4)) == 0)
return (0);
strcat(strcat(strcat(strcpy(q, p), ". "), t), ".");
return (q);
}
}
return (0);
}
