Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <pjlib-util/dns.h> |
| 21 | #include <pj/assert.h> |
| 22 | #include <pj/log.h> |
| 23 | #include <pj/string.h> |
| 24 | |
| 25 | #define THIS_FILE "dns_dump.c" |
| 26 | #define LEVEL 3 |
| 27 | |
| 28 | static const char *spell_ttl(char *buf, int size, unsigned ttl) |
| 29 | { |
| 30 | #define DAY (3600*24) |
| 31 | #define HOUR (3600) |
| 32 | #define MINUTE (60) |
| 33 | |
| 34 | char *p = buf; |
| 35 | int len; |
| 36 | |
| 37 | if (ttl > DAY) { |
| 38 | len = pj_ansi_snprintf(p, size, "%dd ", ttl/DAY); |
| 39 | if (len < 1 || len >= size) |
| 40 | return "-err-"; |
| 41 | size -= len; |
| 42 | p += len; |
| 43 | ttl %= DAY; |
| 44 | } |
| 45 | |
| 46 | if (ttl > HOUR) { |
| 47 | len = pj_ansi_snprintf(p, size, "%dh ", ttl/HOUR); |
| 48 | if (len < 1 || len >= size) |
| 49 | return "-err-"; |
| 50 | size -= len; |
| 51 | p += len; |
| 52 | ttl %= HOUR; |
| 53 | } |
| 54 | |
| 55 | if (ttl > MINUTE) { |
| 56 | len = pj_ansi_snprintf(p, size, "%dm ", ttl/MINUTE); |
| 57 | if (len < 1 || len >= size) |
| 58 | return "-err-"; |
| 59 | size -= len; |
| 60 | p += len; |
| 61 | ttl %= MINUTE; |
| 62 | } |
| 63 | |
| 64 | if (ttl > 0) { |
| 65 | len = pj_ansi_snprintf(p, size, "%ds ", ttl); |
| 66 | if (len < 1 || len >= size) |
| 67 | return "-err-"; |
| 68 | size -= len; |
| 69 | p += len; |
| 70 | ttl = 0; |
| 71 | } |
| 72 | |
| 73 | *p = '\0'; |
| 74 | return buf; |
| 75 | } |
| 76 | |
| 77 | |
| 78 | static void dump_query(unsigned index, const pj_dns_parsed_query *q) |
| 79 | { |
| 80 | PJ_LOG(3,(THIS_FILE, " %d. Name: %.*s", |
| 81 | index, (int)q->name.slen, q->name.ptr)); |
| 82 | PJ_LOG(3,(THIS_FILE, " Type: %s (%d)", |
| 83 | pj_dns_get_type_name(q->type), q->type)); |
| 84 | PJ_LOG(3,(THIS_FILE, " Class: %s (%d)", |
| 85 | (q->dnsclass==1 ? "IN" : "<Unknown>"), q->dnsclass)); |
| 86 | } |
| 87 | |
| 88 | static void dump_answer(unsigned index, const pj_dns_parsed_rr *rr) |
| 89 | { |
| 90 | const pj_str_t root_name = { "<Root>", 6 }; |
| 91 | const pj_str_t *name = &rr->name; |
| 92 | char ttl_words[32]; |
| 93 | |
| 94 | if (name->slen == 0) |
| 95 | name = &root_name; |
| 96 | |
| 97 | PJ_LOG(3,(THIS_FILE, " %d. %s record (type=%d)", |
| 98 | index, pj_dns_get_type_name(rr->type), |
| 99 | rr->type)); |
| 100 | PJ_LOG(3,(THIS_FILE, " Name: %.*s", (int)name->slen, name->ptr)); |
| 101 | PJ_LOG(3,(THIS_FILE, " TTL: %u (%s)", rr->ttl, |
| 102 | spell_ttl(ttl_words, sizeof(ttl_words), rr->ttl))); |
| 103 | PJ_LOG(3,(THIS_FILE, " Data length: %u", rr->rdlength)); |
| 104 | |
| 105 | if (rr->type == PJ_DNS_TYPE_SRV) { |
| 106 | PJ_LOG(3,(THIS_FILE, " SRV: prio=%d, weight=%d %.*s:%d", |
| 107 | rr->rdata.srv.prio, rr->rdata.srv.weight, |
| 108 | (int)rr->rdata.srv.target.slen, |
| 109 | rr->rdata.srv.target.ptr, |
| 110 | rr->rdata.srv.port)); |
| 111 | } else if (rr->type == PJ_DNS_TYPE_CNAME || |
| 112 | rr->type == PJ_DNS_TYPE_NS || |
| 113 | rr->type == PJ_DNS_TYPE_PTR) |
| 114 | { |
| 115 | PJ_LOG(3,(THIS_FILE, " Name: %.*s", |
| 116 | (int)rr->rdata.cname.name.slen, |
| 117 | rr->rdata.cname.name.ptr)); |
| 118 | } else if (rr->type == PJ_DNS_TYPE_A) { |
| 119 | PJ_LOG(3,(THIS_FILE, " IP address: %s", |
| 120 | pj_inet_ntoa(rr->rdata.a.ip_addr))); |
| 121 | } else if (rr->type == PJ_DNS_TYPE_AAAA) { |
| 122 | char addr[PJ_INET6_ADDRSTRLEN]; |
| 123 | PJ_LOG(3,(THIS_FILE, " IPv6 address: %s", |
| 124 | pj_inet_ntop2(pj_AF_INET6(), &rr->rdata.aaaa.ip_addr, |
| 125 | addr, sizeof(addr)))); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | |
| 130 | PJ_DEF(void) pj_dns_dump_packet(const pj_dns_parsed_packet *res) |
| 131 | { |
| 132 | unsigned i; |
| 133 | |
| 134 | PJ_ASSERT_ON_FAIL(res != NULL, return); |
| 135 | |
| 136 | /* Header part */ |
| 137 | PJ_LOG(3,(THIS_FILE, "Domain Name System packet (%s):", |
| 138 | (PJ_DNS_GET_QR(res->hdr.flags) ? "response" : "query"))); |
| 139 | PJ_LOG(3,(THIS_FILE, " Transaction ID: %d", res->hdr.id)); |
| 140 | PJ_LOG(3,(THIS_FILE, |
| 141 | " Flags: opcode=%d, authoritative=%d, truncated=%d, rcode=%d", |
| 142 | PJ_DNS_GET_OPCODE(res->hdr.flags), |
| 143 | PJ_DNS_GET_AA(res->hdr.flags), |
| 144 | PJ_DNS_GET_TC(res->hdr.flags), |
| 145 | PJ_DNS_GET_RCODE(res->hdr.flags))); |
| 146 | PJ_LOG(3,(THIS_FILE, " Nb of queries: %d", res->hdr.qdcount)); |
| 147 | PJ_LOG(3,(THIS_FILE, " Nb of answer RR: %d", res->hdr.anscount)); |
| 148 | PJ_LOG(3,(THIS_FILE, " Nb of authority RR: %d", res->hdr.nscount)); |
| 149 | PJ_LOG(3,(THIS_FILE, " Nb of additional RR: %d", res->hdr.arcount)); |
| 150 | PJ_LOG(3,(THIS_FILE, "")); |
| 151 | |
| 152 | /* Dump queries */ |
| 153 | if (res->hdr.qdcount) { |
| 154 | PJ_LOG(3,(THIS_FILE, " Queries:")); |
| 155 | |
| 156 | for (i=0; i<res->hdr.qdcount; ++i) { |
| 157 | dump_query(i, &res->q[i]); |
| 158 | } |
| 159 | PJ_LOG(3,(THIS_FILE, "")); |
| 160 | } |
| 161 | |
| 162 | /* Dump answers */ |
| 163 | if (res->hdr.anscount) { |
| 164 | PJ_LOG(3,(THIS_FILE, " Answers RR:")); |
| 165 | |
| 166 | for (i=0; i<res->hdr.anscount; ++i) { |
| 167 | dump_answer(i, &res->ans[i]); |
| 168 | } |
| 169 | PJ_LOG(3,(THIS_FILE, "")); |
| 170 | } |
| 171 | |
| 172 | /* Dump NS sections */ |
| 173 | if (res->hdr.anscount) { |
| 174 | PJ_LOG(3,(THIS_FILE, " NS Authority RR:")); |
| 175 | |
| 176 | for (i=0; i<res->hdr.nscount; ++i) { |
| 177 | dump_answer(i, &res->ns[i]); |
| 178 | } |
| 179 | PJ_LOG(3,(THIS_FILE, "")); |
| 180 | } |
| 181 | |
| 182 | /* Dump Additional info sections */ |
| 183 | if (res->hdr.arcount) { |
| 184 | PJ_LOG(3,(THIS_FILE, " Additional Info RR:")); |
| 185 | |
| 186 | for (i=0; i<res->hdr.arcount; ++i) { |
| 187 | dump_answer(i, &res->arr[i]); |
| 188 | } |
| 189 | PJ_LOG(3,(THIS_FILE, "")); |
| 190 | } |
| 191 | |
| 192 | } |
| 193 | |