| /* $Id$ */ |
| /* |
| * 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) |
| return "-err-"; |
| size -= len; |
| p += len; |
| ttl %= DAY; |
| } |
| |
| if (ttl > HOUR) { |
| len = pj_ansi_snprintf(p, size, "%dh ", ttl/HOUR); |
| if (len < 1) |
| return "-err-"; |
| size -= len; |
| p += len; |
| ttl %= HOUR; |
| } |
| |
| if (ttl > MINUTE) { |
| len = pj_ansi_snprintf(p, size, "%dm ", ttl/MINUTE); |
| if (len < 1) |
| return "-err-"; |
| size -= len; |
| p += len; |
| ttl %= MINUTE; |
| } |
| |
| if (ttl > 0) { |
| len = pj_ansi_snprintf(p, size, "%ds ", ttl); |
| if (len < 1) |
| 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]; |
| |
| 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_ntoa(rr->rdata.a.ip_addr))); |
| } else if (rr->type == PJ_DNS_TYPE_AAAA) { |
| char addr[PJ_INET6_ADDRSTRLEN]; |
| 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.anscount) { |
| 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, "")); |
| } |
| |
| } |
| |