diff options
Diffstat (limited to 'pjlib-util/src/pjlib-util/dns_dump.c')
| -rw-r--r-- | pjlib-util/src/pjlib-util/dns_dump.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/pjlib-util/src/pjlib-util/dns_dump.c b/pjlib-util/src/pjlib-util/dns_dump.c new file mode 100644 index 0000000..85c8e85 --- /dev/null +++ b/pjlib-util/src/pjlib-util/dns_dump.c @@ -0,0 +1,193 @@ +/* $Id: dns_dump.c 3553 2011-05-05 06:14:19Z nanang $ */ +/* + * 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, "")); + } + +} + |