src/resolve/resolved-dns-rr.c

	resolved-dns-rr.c revision 946c70944ebdf428ffeb9991a7449edbd4011461
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering/***
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  This file is part of systemd.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  Copyright 2014 Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  systemd is free software; you can redistribute it and/or modify it
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  under the terms of the GNU Lesser General Public License as published by
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  the Free Software Foundation; either version 2.1 of the License, or
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  (at your option) any later version.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  systemd is distributed in the hope that it will be useful, but
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  WITHOUT ANY WARRANTY; without even the implied warranty of
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  Lesser General Public License for more details.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  You should have received a copy of the GNU Lesser General Public License
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  along with systemd; If not, see <http://www.gnu.org/licenses/>.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering***/
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
0dae31d468b1a0e22d98921f7b0dbd92fd217167Zbigniew Jędrzejewski-Szmek#include "resolved-dns-domain.h"
0dae31d468b1a0e22d98921f7b0dbd92fd217167Zbigniew Jędrzejewski-Szmek#include "resolved-dns-rr.h"
b5efdb8af40ea759a1ea584c1bc44ecc81dd00ceLennart Poettering
4ad7f2761da661853dcc29d542efb4727abb1101Nick OwensDnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name) {
7263f72499e962b3fd54cdb7c79d49ca72121edeZbigniew Jędrzejewski-Szmek        DnsResourceKey *k;
e4e73a632524c382139034d4271f53b6089ab4cbLennart Poettering        size_t l;
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering
e4e73a632524c382139034d4271f53b6089ab4cbLennart Poettering        assert(name);
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering        l = strlen(name);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        k = malloc0(sizeof(DnsResourceKey) + l + 1);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (!k)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return NULL;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        k->n_ref = 1;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        k->class = class;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        k->type = type;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        strcpy((char*) k + sizeof(DnsResourceKey), name);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        return k;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering}
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart PoetteringDnsResourceKey* dns_resource_key_new_consume(uint16_t class, uint16_t type, char *name) {
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        DnsResourceKey *k;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        assert(name);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        k = new0(DnsResourceKey, 1);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (!k)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return NULL;
7c1ff6ac3d9e3acae1d601d40728cf7ccc9a7730Tom Gundersen
7c1ff6ac3d9e3acae1d601d40728cf7ccc9a7730Tom Gundersen        k->n_ref = 1;
7c1ff6ac3d9e3acae1d601d40728cf7ccc9a7730Tom Gundersen        k->class = class;
7c1ff6ac3d9e3acae1d601d40728cf7ccc9a7730Tom Gundersen        k->type = type;
7c1ff6ac3d9e3acae1d601d40728cf7ccc9a7730Tom Gundersen        k->_name = name;
7c1ff6ac3d9e3acae1d601d40728cf7ccc9a7730Tom Gundersen
36d9205d669bcdcb04fa730d1f3549a9fc9a9001Tom Gundersen        return k;
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering}
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering
36d9205d669bcdcb04fa730d1f3549a9fc9a9001Tom GundersenDnsResourceKey* dns_resource_key_ref(DnsResourceKey *k) {
36d9205d669bcdcb04fa730d1f3549a9fc9a9001Tom Gundersen
36d9205d669bcdcb04fa730d1f3549a9fc9a9001Tom Gundersen        if (!k)
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering                return NULL;
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering        assert(k->n_ref > 0);
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering        k->n_ref++;
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering        return k;
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering}
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart PoetteringDnsResourceKey* dns_resource_key_unref(DnsResourceKey *k) {
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering        if (!k)
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering                return NULL;
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering        assert(k->n_ref > 0);
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering        if (k->n_ref == 1) {
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering                free(k->_name);
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering                free(k);
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering        } else
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering                k->n_ref--;
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering        return NULL;
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering}
36d9205d669bcdcb04fa730d1f3549a9fc9a9001Tom Gundersen
36d9205d669bcdcb04fa730d1f3549a9fc9a9001Tom Gundersenint dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        int r;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        r = dns_name_equal(DNS_RESOURCE_KEY_NAME(a), DNS_RESOURCE_KEY_NAME(b));
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        if (r <= 0)
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return r;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        if (a->class != b->class)
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return 0;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        if (a->type != b->type)
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return 0;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        return 1;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering}
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poetteringint dns_resource_key_match_rr(const DnsResourceKey *key, const DnsResourceRecord *rr) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        assert(key);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        assert(rr);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        if (rr->key->class != key->class && key->class != DNS_CLASS_ANY)
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return 0;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        if (rr->key->type != key->type && key->type != DNS_TYPE_ANY)
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return 0;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        return dns_name_equal(DNS_RESOURCE_KEY_NAME(rr->key), DNS_RESOURCE_KEY_NAME(key));
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering}
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poetteringint dns_resource_key_match_cname(const DnsResourceKey *key, const DnsResourceRecord *rr) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        assert(key);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        assert(rr);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (rr->key->class != key->class && key->class != DNS_CLASS_ANY)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return 0;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (rr->key->type != DNS_TYPE_CNAME)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return 0;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        return dns_name_equal(DNS_RESOURCE_KEY_NAME(rr->key), DNS_RESOURCE_KEY_NAME(key));
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering}
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poetteringunsigned long dns_resource_key_hash_func(const void *i, const uint8_t hash_key[HASH_KEY_SIZE]) {
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        const DnsResourceKey *k = i;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        unsigned long ul;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        ul = dns_name_hash_func(DNS_RESOURCE_KEY_NAME(k), hash_key);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        ul = ul * hash_key[0] + ul + k->class;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        ul = ul * hash_key[1] + ul + k->type;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        return ul;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering}
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poetteringint dns_resource_key_compare_func(const void *a, const void *b) {
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        const DnsResourceKey *x = a, *y = b;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        int ret;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        ret = dns_name_compare_func(DNS_RESOURCE_KEY_NAME(x), DNS_RESOURCE_KEY_NAME(y));
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (ret != 0)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return ret;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (x->type < y->type)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return -1;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (x->type > y->type)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return 1;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (x->class < y->class)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return -1;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (x->class > y->class)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return 1;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        return 0;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering}
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poetteringint dns_resource_key_to_string(const DnsResourceKey *key, char **ret) {
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        char cbuf[DECIMAL_STR_MAX(uint16_t)], tbuf[DECIMAL_STR_MAX(uint16_t)];
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        const char *c, *t;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        char *s;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        c = dns_class_to_string(key->class);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (!c) {
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                sprintf(cbuf, "%i", key->class);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                c = cbuf;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        }
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        t = dns_type_to_string(key->type);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (!t){
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                sprintf(tbuf, "%i", key->type);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                t = tbuf;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        }
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        s = strjoin(DNS_RESOURCE_KEY_NAME(key), " ", c, " ", t, NULL);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        if (!s)
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return -ENOMEM;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        *ret = s;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        return 0;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering}
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart PoetteringDnsResourceRecord* dns_resource_record_new(DnsResourceKey *key) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        DnsResourceRecord *rr;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        rr = new0(DnsResourceRecord, 1);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (!rr)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                return NULL;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        rr->n_ref = 1;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        rr->key = dns_resource_key_ref(key);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        return rr;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering}
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart PoetteringDnsResourceRecord* dns_resource_record_new_full(uint16_t class, uint16_t type, const char *name) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        key = dns_resource_key_new(class, type, name);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        if (!key)
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return NULL;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        return dns_resource_record_new(key);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering}
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart PoetteringDnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr) {
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (!rr)
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return NULL;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        assert(rr->n_ref > 0);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        rr->n_ref++;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        return rr;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering}
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart PoetteringDnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr) {
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering        if (!rr)
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return NULL;
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        assert(rr->n_ref > 0);
58db254ade4fb2ef77de68f28c4f13814819f6a1Lennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        if (rr->n_ref > 1) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                rr->n_ref--;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                return NULL;
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        }
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering        if (rr->key) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                if (IN_SET(rr->key->type, DNS_TYPE_PTR, DNS_TYPE_NS, DNS_TYPE_CNAME))
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                        free(rr->ptr.name);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                else if (rr->key->type == DNS_TYPE_HINFO) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                        free(rr->hinfo.cpu);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                        free(rr->hinfo.os);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                } else if (rr->key->type == DNS_TYPE_SOA) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                        free(rr->soa.mname);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                        free(rr->soa.rname);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                } else if (rr->key->type == DNS_TYPE_MX) {
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                        free(rr->mx.exchange);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                } else if (!IN_SET(rr->key->type, DNS_TYPE_A, DNS_TYPE_AAAA))
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                        free(rr->generic.data);
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering
801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47ddLennart Poettering                dns_resource_key_unref(rr->key);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        }
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen        free(rr);
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        return NULL;
b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen}
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersenint dns_resource_record_new_reverse(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *hostname) {
b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen        _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen        _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        _cleanup_free_ char *ptr = NULL;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        int r;
d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        assert(ret);
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        assert(address);
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        assert(hostname);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        r = dns_name_reverse(family, address, &ptr);
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        if (r < 0)
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering                return r;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        key = dns_resource_key_new_consume(DNS_CLASS_IN, DNS_TYPE_PTR, ptr);
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        if (!key)
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering                return -ENOMEM;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        ptr = NULL;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        rr = dns_resource_record_new(key);
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        if (!rr)
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering                return -ENOMEM;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        rr->ptr.name = strdup(hostname);
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        if (!rr->ptr.name)
d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt                return -ENOMEM;
d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt
d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt        *ret = rr;
d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt        rr = NULL;
d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering        return 0;
d23a27a964748967e1ad20e86de869a753af555bTom Gundersen}
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poetteringint dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b) {
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering        int r;
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering        assert(a);
d23a27a964748967e1ad20e86de869a753af555bTom Gundersen        assert(b);
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering        r = dns_resource_key_equal(a->key, b->key);
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering        if (r <= 0)
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering                return r;
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering
d23a27a964748967e1ad20e86de869a753af555bTom Gundersen        switch (a->key->type) {
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering        case DNS_TYPE_PTR:
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering        case DNS_TYPE_NS:
23432a1c249b9c513e438bffe9778a7ce2ee74feZbigniew Jędrzejewski-Szmek        case DNS_TYPE_CNAME:
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering                return dns_name_equal(a->ptr.name, b->ptr.name);
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering        case DNS_TYPE_HINFO:
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering                return strcaseeq(a->hinfo.cpu, b->hinfo.cpu) &&
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering                       strcaseeq(a->hinfo.os, b->hinfo.os);
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        case DNS_TYPE_A:
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return memcmp(&a->a.in_addr, &b->a.in_addr, sizeof(struct in_addr)) == 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        case DNS_TYPE_AAAA:
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return memcmp(&a->aaaa.in6_addr, &b->aaaa.in6_addr, sizeof(struct in6_addr)) == 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        case DNS_TYPE_SOA:
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                r = dns_name_equal(a->soa.mname, b->soa.mname);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                if (r <= 0)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                        return r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                r = dns_name_equal(a->soa.rname, b->soa.rname);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                if (r <= 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                        return r;
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering                return a->soa.serial  == b->soa.serial &&
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering                       a->soa.refresh == b->soa.refresh &&
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering                       a->soa.retry   == b->soa.retry &&
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering                       a->soa.expire  == b->soa.expire &&
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering                       a->soa.minimum == b->soa.minimum;
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering        case DNS_TYPE_MX:
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering                if (a->mx.priority != b->mx.priority)
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering                        return 0;
8bf52d3d17d364438191077d0750b8b80b5dc53aLennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return dns_name_equal(a->mx.exchange, b->mx.exchange);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        default:
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return a->generic.size == b->generic.size &&
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                        memcmp(a->generic.data, b->generic.data, a->generic.size) == 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        }
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringint dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        _cleanup_free_ char *k = NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        char *s;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        int r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(rr);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        r = dns_resource_key_to_string(rr->key, &k);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (r < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        switch (rr->key->type) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        case DNS_TYPE_PTR:
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek        case DNS_TYPE_NS:
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering        case DNS_TYPE_CNAME:
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering                s = strjoin(k, " ", rr->ptr.name, NULL);
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering                if (!s)
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering                        return -ENOMEM;
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek                break;
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek        case DNS_TYPE_HINFO:
8ac4e9e1e54397f6d1745c2a7a806132418c7da2Lennart Poettering                s = strjoin(k, " ", rr->hinfo.cpu, " ", rr->hinfo.os, NULL);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                if (!s)
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek                        return -ENOMEM;
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering                break;
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        case DNS_TYPE_A: {
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                _cleanup_free_ char *x = NULL;
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering                r = in_addr_to_string(AF_INET, (const union in_addr_union*) &rr->a.in_addr, &x);
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek                if (r < 0)
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering                        return r;
2001c80560e3dae69e14fd994d3978c187af48b8Lennart Poettering
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek                s = strjoin(k, " ", x, NULL);
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering                if (!s)
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek                        return -ENOMEM;
7e8e0422aeb16f2a09a40546c61df753d10029b6Lennart Poettering                break;
7e8e0422aeb16f2a09a40546c61df753d10029b6Lennart Poettering        }
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering        case DNS_TYPE_AAAA: {
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek                _cleanup_free_ char *x = NULL;
946c70944ebdf428ffeb9991a7449edbd4011461Zbigniew Jędrzejewski-Szmek
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek                r = in_addr_to_string(AF_INET6, (const union in_addr_union*) &rr->aaaa.in6_addr, &x);
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering                if (r < 0)
abf126a355e2f2b62b6c51ab3bb37895d1e3eee7Tom Gundersen                        return r;
abf126a355e2f2b62b6c51ab3bb37895d1e3eee7Tom Gundersen
abf126a355e2f2b62b6c51ab3bb37895d1e3eee7Tom Gundersen                s = strjoin(k, " ", x, NULL);
abf126a355e2f2b62b6c51ab3bb37895d1e3eee7Tom Gundersen                if (!s)
42cc2eebb01056beb7acd3ecfe8e533558237f84Lennart Poettering                        return -ENOMEM;
549c1a2564b56f2bb38f1203d59c747ea15817f3Tom Gundersen                break;
42cc2eebb01056beb7acd3ecfe8e533558237f84Lennart Poettering        }
42cc2eebb01056beb7acd3ecfe8e533558237f84Lennart Poettering
8db0d2f5c37e7e8f5bfce016cfdad7947a3ea939Zbigniew Jędrzejewski-Szmek        case DNS_TYPE_SOA:
8db0d2f5c37e7e8f5bfce016cfdad7947a3ea939Zbigniew Jędrzejewski-Szmek                r = asprintf(&s, "%s %s %s %u %u %u %u %u",
8db0d2f5c37e7e8f5bfce016cfdad7947a3ea939Zbigniew Jędrzejewski-Szmek                             k,
8db0d2f5c37e7e8f5bfce016cfdad7947a3ea939Zbigniew Jędrzejewski-Szmek                             strna(rr->soa.mname),
151226ab4bf276d60d51864330a99f886b923697Zbigniew Jędrzejewski-Szmek                             strna(rr->soa.rname),
151226ab4bf276d60d51864330a99f886b923697Zbigniew Jędrzejewski-Szmek                             rr->soa.serial,
151226ab4bf276d60d51864330a99f886b923697Zbigniew Jędrzejewski-Szmek                             rr->soa.refresh,
151226ab4bf276d60d51864330a99f886b923697Zbigniew Jędrzejewski-Szmek                             rr->soa.retry,
151226ab4bf276d60d51864330a99f886b923697Zbigniew Jędrzejewski-Szmek                             rr->soa.expire,
50f1e641a93cacfc693b0c3d300bee5df0c8c460Tom Gundersen                             rr->soa.minimum);
50f1e641a93cacfc693b0c3d300bee5df0c8c460Tom Gundersen                if (r < 0)
50f1e641a93cacfc693b0c3d300bee5df0c8c460Tom Gundersen                        return -ENOMEM;
50f1e641a93cacfc693b0c3d300bee5df0c8c460Tom Gundersen                break;
50f1e641a93cacfc693b0c3d300bee5df0c8c460Tom Gundersen
5d45a8808431987c370706d365fb0cc95cf03d52Tom Gundersen        case DNS_TYPE_MX:
5d45a8808431987c370706d365fb0cc95cf03d52Tom Gundersen                r = asprintf(&s, "%s %u %s",
5d45a8808431987c370706d365fb0cc95cf03d52Tom Gundersen                             k,
5d45a8808431987c370706d365fb0cc95cf03d52Tom Gundersen                             rr->mx.priority,
5d45a8808431987c370706d365fb0cc95cf03d52Tom Gundersen                             rr->mx.exchange);
5d45a8808431987c370706d365fb0cc95cf03d52Tom Gundersen                if (r < 0)
0dae31d468b1a0e22d98921f7b0dbd92fd217167Zbigniew Jędrzejewski-Szmek                        return -ENOMEM;
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek                break;
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek        default: {
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering                _cleanup_free_ char *x = NULL;
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                x = hexmem(rr->generic.data, rr->generic.size);
9de3e3294065e8697ff10130b53f274319cdcf6fZbigniew Jędrzejewski-Szmek                if (!x)
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering                        return -ENOMEM;
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                s = strjoin(k, " ", x, NULL);
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering                if (!s)
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering                        return -ENOMEM;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering                break;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        }}
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        *ret = s;
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        return 0;
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering}
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poetteringconst char *dns_class_to_string(uint16_t class) {
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        switch (class) {
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        case DNS_CLASS_IN:
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering                return "IN";
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        case DNS_CLASS_ANY:
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering                return "ANY";
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        }
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        return NULL;
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering}
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poetteringint dns_class_from_string(const char *s, uint16_t *class) {
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        assert(s);
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        assert(class);
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        if (strcaseeq(s, "IN"))
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering                *class = DNS_CLASS_IN;
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        else if (strcaseeq(s, "ANY"))
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering                *class = DNS_TYPE_ANY;
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        else
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering                return -EINVAL;
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        return 0;
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering}
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poetteringstatic const struct {
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        uint16_t type;
623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering        const char *name;
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering} dns_types[] = {
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_A,     "A"     },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_NS,    "NS"    },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_CNAME, "CNAME" },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_SOA,   "SOA"   },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_PTR,   "PTR"   },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_HINFO, "HINFO" },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_MX,    "MX"    },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_TXT,   "TXT"   },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_AAAA,  "AAAA"  },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_SRV,   "SRV"   },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_SSHFP, "SSHFP" },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_DNAME, "DNAME" },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_ANY,   "ANY"   },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_OPT,   "OPT"   },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_TKEY,  "TKEY"  },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_TSIG,  "TSIG"  },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_IXFR,  "IXFR"  },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        { DNS_TYPE_AXFR,  "AXFR"  },
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering};
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poetteringconst char *dns_type_to_string(uint16_t type) {
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        unsigned i;
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        for (i = 0; i < ELEMENTSOF(dns_types); i++)
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering                if (dns_types[i].type == type)
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering                        return dns_types[i].name;
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering
78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering        return NULL;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering}
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poetteringint dns_type_from_string(const char *s, uint16_t *type) {
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        unsigned i;
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        assert(s);
faa133f3aa7a18f26563dc5d6b95898cb315c37aLennart Poettering        assert(type);
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering        for (i = 0; i < ELEMENTSOF(dns_types); i++)
322345fdb9865ef2477fba8e4bdde0e1183ef505Lennart Poettering                if (strcaseeq(dns_types[i].name, s)) {
fd0b4602f6332c3f1660eb208c8f5c719709a009Lennart Poettering                        *type = dns_types[i].type;
fd0b4602f6332c3f1660eb208c8f5c719709a009Lennart Poettering                        return 0;
fd0b4602f6332c3f1660eb208c8f5c719709a009Lennart Poettering                }
fd0b4602f6332c3f1660eb208c8f5c719709a009Lennart Poettering
2d4c5cbc0ed3ccb09dc086a040088b454c22c644Lennart Poettering        return -EINVAL;
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering}
9c92ce6d67f88beb31dd6555d12ae3f632218a39Lennart Poettering