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/* $Id$ */
/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <pjlib-util/dns.h>
#include <pj/assert.h>
#include <pj/log.h>
#include <pj/string.h>
#define THIS_FILE "dns_dump.c"
#define LEVEL 3
static const char *spell_ttl(char *buf, int size, unsigned ttl)
{
#define DAY (3600*24)
#define HOUR (3600)
#define MINUTE (60)
char *p = buf;
int len;
if (ttl > DAY) {
len = pj_ansi_snprintf(p, size, "%dd ", ttl/DAY);
if (len < 1 || len >= size)
return "-err-";
size -= len;
p += len;
ttl %= DAY;
}
if (ttl > HOUR) {
len = pj_ansi_snprintf(p, size, "%dh ", ttl/HOUR);
if (len < 1 || len >= size)
return "-err-";
size -= len;
p += len;
ttl %= HOUR;
}
if (ttl > MINUTE) {
len = pj_ansi_snprintf(p, size, "%dm ", ttl/MINUTE);
if (len < 1 || len >= size)
return "-err-";
size -= len;
p += len;
ttl %= MINUTE;
}
if (ttl > 0) {
len = pj_ansi_snprintf(p, size, "%ds ", ttl);
if (len < 1 || len >= size)
return "-err-";
size -= len;
p += len;
ttl = 0;
}
*p = '\0';
return buf;
}
static void dump_query(unsigned index, const pj_dns_parsed_query *q)
{
PJ_LOG(3,(THIS_FILE, " %d. Name: %.*s",
index, (int)q->name.slen, q->name.ptr));
PJ_LOG(3,(THIS_FILE, " Type: %s (%d)",
pj_dns_get_type_name(q->type), q->type));
PJ_LOG(3,(THIS_FILE, " Class: %s (%d)",
(q->dnsclass==1 ? "IN" : "<Unknown>"), q->dnsclass));
}
static void dump_answer(unsigned index, const pj_dns_parsed_rr *rr)
{
const pj_str_t root_name = { "<Root>", 6 };
const pj_str_t *name = &rr->name;
char ttl_words[32];
char addr[PJ_INET6_ADDRSTRLEN];
if (name->slen == 0)
name = &root_name;
PJ_LOG(3,(THIS_FILE, " %d. %s record (type=%d)",
index, pj_dns_get_type_name(rr->type),
rr->type));
PJ_LOG(3,(THIS_FILE, " Name: %.*s", (int)name->slen, name->ptr));
PJ_LOG(3,(THIS_FILE, " TTL: %u (%s)", rr->ttl,
spell_ttl(ttl_words, sizeof(ttl_words), rr->ttl)));
PJ_LOG(3,(THIS_FILE, " Data length: %u", rr->rdlength));
if (rr->type == PJ_DNS_TYPE_SRV) {
PJ_LOG(3,(THIS_FILE, " SRV: prio=%d, weight=%d %.*s:%d",
rr->rdata.srv.prio, rr->rdata.srv.weight,
(int)rr->rdata.srv.target.slen,
rr->rdata.srv.target.ptr,
rr->rdata.srv.port));
} else if (rr->type == PJ_DNS_TYPE_CNAME ||
rr->type == PJ_DNS_TYPE_NS ||
rr->type == PJ_DNS_TYPE_PTR)
{
PJ_LOG(3,(THIS_FILE, " Name: %.*s",
(int)rr->rdata.cname.name.slen,
rr->rdata.cname.name.ptr));
} else if (rr->type == PJ_DNS_TYPE_A) {
PJ_LOG(3,(THIS_FILE, " IP address: %s",
pj_inet_ntop2(pj_AF_INET(), &rr->rdata.a.ip_addr,
addr, sizeof(addr))));
} else if (rr->type == PJ_DNS_TYPE_AAAA) {
PJ_LOG(3,(THIS_FILE, " IPv6 address: %s",
pj_inet_ntop2(pj_AF_INET6(), &rr->rdata.aaaa.ip_addr,
addr, sizeof(addr))));
}
}
PJ_DEF(void) pj_dns_dump_packet(const pj_dns_parsed_packet *res)
{
unsigned i;
PJ_ASSERT_ON_FAIL(res != NULL, return);
/* Header part */
PJ_LOG(3,(THIS_FILE, "Domain Name System packet (%s):",
(PJ_DNS_GET_QR(res->hdr.flags) ? "response" : "query")));
PJ_LOG(3,(THIS_FILE, " Transaction ID: %d", res->hdr.id));
PJ_LOG(3,(THIS_FILE,
" Flags: opcode=%d, authoritative=%d, truncated=%d, rcode=%d",
PJ_DNS_GET_OPCODE(res->hdr.flags),
PJ_DNS_GET_AA(res->hdr.flags),
PJ_DNS_GET_TC(res->hdr.flags),
PJ_DNS_GET_RCODE(res->hdr.flags)));
PJ_LOG(3,(THIS_FILE, " Nb of queries: %d", res->hdr.qdcount));
PJ_LOG(3,(THIS_FILE, " Nb of answer RR: %d", res->hdr.anscount));
PJ_LOG(3,(THIS_FILE, " Nb of authority RR: %d", res->hdr.nscount));
PJ_LOG(3,(THIS_FILE, " Nb of additional RR: %d", res->hdr.arcount));
PJ_LOG(3,(THIS_FILE, ""));
/* Dump queries */
if (res->hdr.qdcount) {
PJ_LOG(3,(THIS_FILE, " Queries:"));
for (i=0; i<res->hdr.qdcount; ++i) {
dump_query(i, &res->q[i]);
}
PJ_LOG(3,(THIS_FILE, ""));
}
/* Dump answers */
if (res->hdr.anscount) {
PJ_LOG(3,(THIS_FILE, " Answers RR:"));
for (i=0; i<res->hdr.anscount; ++i) {
dump_answer(i, &res->ans[i]);
}
PJ_LOG(3,(THIS_FILE, ""));
}
/* Dump NS sections */
if (res->hdr.nscount) {
PJ_LOG(3,(THIS_FILE, " NS Authority RR:"));
for (i=0; i<res->hdr.nscount; ++i) {
dump_answer(i, &res->ns[i]);
}
PJ_LOG(3,(THIS_FILE, ""));
}
/* Dump Additional info sections */
if (res->hdr.arcount) {
PJ_LOG(3,(THIS_FILE, " Additional Info RR:"));
for (i=0; i<res->hdr.arcount; ++i) {
dump_answer(i, &res->arr[i]);
}
PJ_LOG(3,(THIS_FILE, ""));
}
}
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