src/resolve/resolved-dns-rr.c

	resolved-dns-rr.c revision 549c1a2564b56f2bb38f1203d59c747ea15817f3
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering/***
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  This file is part of systemd.
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  Copyright 2014 Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  systemd is free software; you can redistribute it and/or modify it
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  under the terms of the GNU Lesser General Public License as published by
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  the Free Software Foundation; either version 2.1 of the License, or
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  (at your option) any later version.
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  systemd is distributed in the hope that it will be useful, but
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  WITHOUT ANY WARRANTY; without even the implied warranty of
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  Lesser General Public License for more details.
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  You should have received a copy of the GNU Lesser General Public License
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering  along with systemd; If not, see <http://www.gnu.org/licenses/>.
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering***/
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include <math.h>
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "strv.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "dns-domain.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "resolved-dns-rr.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "resolved-dns-packet.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering#include "dns-type.h"
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart PoetteringDnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        DnsResourceKey *k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        size_t l;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        l = strlen(name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k = malloc0(sizeof(DnsResourceKey) + l + 1);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!k)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k->n_ref = 1;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k->class = class;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k->type = type;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        strcpy((char*) k + sizeof(DnsResourceKey), name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart PoetteringDnsResourceKey* dns_resource_key_new_consume(uint16_t class, uint16_t type, char *name) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        DnsResourceKey *k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k = new0(DnsResourceKey, 1);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!k)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k->n_ref = 1;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k->class = class;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k->type = type;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k->_name = name;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart PoetteringDnsResourceKey* dns_resource_key_ref(DnsResourceKey *k) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering        if (!k)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(k->n_ref > 0);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        k->n_ref++;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return k;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart PoetteringDnsResourceKey* dns_resource_key_unref(DnsResourceKey *k) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!k)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(k->n_ref > 0);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (k->n_ref == 1) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(k->_name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                free(k);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        } else
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                k->n_ref--;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = dns_name_equal(DNS_RESOURCE_KEY_NAME(a), DNS_RESOURCE_KEY_NAME(b));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r <= 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (a->class != b->class)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (a->type != b->type)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return 1;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint dns_resource_key_match_rr(const DnsResourceKey *key, const DnsResourceRecord *rr) {
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering        assert(key);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(rr);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (rr->key->class != key->class && key->class != DNS_CLASS_ANY)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (rr->key->type != key->type && key->type != DNS_TYPE_ANY)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return dns_name_equal(DNS_RESOURCE_KEY_NAME(rr->key), DNS_RESOURCE_KEY_NAME(key));
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering}
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poetteringint dns_resource_key_match_cname(const DnsResourceKey *key, const DnsResourceRecord *rr) {
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering        assert(key);
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering        assert(rr);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (rr->key->class != key->class && key->class != DNS_CLASS_ANY)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (rr->key->type != DNS_TYPE_CNAME)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return dns_name_equal(DNS_RESOURCE_KEY_NAME(rr->key), DNS_RESOURCE_KEY_NAME(key));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic unsigned long dns_resource_key_hash_func(const void *i, const uint8_t hash_key[HASH_KEY_SIZE]) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        const DnsResourceKey *k = i;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        unsigned long ul;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        ul = dns_name_hash_func(DNS_RESOURCE_KEY_NAME(k), hash_key);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        ul = ul * hash_key[0] + ul + k->class;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        ul = ul * hash_key[1] + ul + k->type;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return ul;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic int dns_resource_key_compare_func(const void *a, const void *b) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        const DnsResourceKey *x = a, *y = b;
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering        int ret;
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering        ret = dns_name_compare_func(DNS_RESOURCE_KEY_NAME(x), DNS_RESOURCE_KEY_NAME(y));
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering        if (ret != 0)
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering                return ret;
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering        if (x->type < y->type)
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering                return -1;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (x->type > y->type)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 1;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (x->class < y->class)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return -1;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (x->class > y->class)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 1;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringconst struct hash_ops dns_resource_key_hash_ops = {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        .hash = dns_resource_key_hash_func,
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        .compare = dns_resource_key_compare_func
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering};
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint dns_resource_key_to_string(const DnsResourceKey *key, char **ret) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        char cbuf[strlen("CLASS") + DECIMAL_STR_MAX(uint16_t)], tbuf[strlen("TYPE") + DECIMAL_STR_MAX(uint16_t)];
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering        const char *c, *t;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        char *s;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        c = dns_class_to_string(key->class);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!c) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                sprintf(cbuf, "CLASS%u", key->class);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                c = cbuf;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        t = dns_type_to_string(key->type);
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering        if (!t){
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering                sprintf(tbuf, "TYPE%u", key->type);
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering                t = tbuf;
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering        }
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering        if (asprintf(&s, "%s %s %-5s", DNS_RESOURCE_KEY_NAME(key), c, t) < 0)
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering                return -ENOMEM;
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering        *ret = s;
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering        return 0;
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering}
9833a66c7eba011c3740867c80133bc6fa976aa3Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart PoetteringDnsResourceRecord* dns_resource_record_new(DnsResourceKey *key) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        DnsResourceRecord *rr;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        rr = new0(DnsResourceRecord, 1);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!rr)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        rr->n_ref = 1;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        rr->key = dns_resource_key_ref(key);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return rr;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart PoetteringDnsResourceRecord* dns_resource_record_new_full(uint16_t class, uint16_t type, const char *name) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        key = dns_resource_key_new(class, type, name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!key)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return dns_resource_record_new(key);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart PoetteringDnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!rr)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(rr->n_ref > 0);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        rr->n_ref++;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return rr;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart PoetteringDnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr) {
78fe420ff0bb4cd94de3c4d3f15a3021cc3e2878Lennart Poettering        if (!rr)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(rr->n_ref > 0);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (rr->n_ref > 1) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                rr->n_ref--;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (rr->key) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                switch(rr->key->type) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_SRV:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->srv.name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_PTR:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_NS:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_CNAME:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_DNAME:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->ptr.name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_HINFO:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->hinfo.cpu);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->hinfo.os);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_TXT:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_SPF:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        strv_free(rr->txt.strings);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_SOA:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->soa.mname);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->soa.rname);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_MX:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->mx.exchange);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_DS:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->ds.digest);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_SSHFP:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->sshfp.fingerprint);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_DNSKEY:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->dnskey.key);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_RRSIG:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->rrsig.signer);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->rrsig.signature);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_NSEC:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->nsec.next_domain_name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        bitmap_free(rr->nsec.types);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_NSEC3:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->nsec3.next_hashed_name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->nsec3.salt);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        bitmap_free(rr->nsec3.types);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_LOC:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_A:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                case DNS_TYPE_AAAA:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        break;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                default:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        free(rr->generic.data);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                dns_resource_key_unref(rr->key);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        free(rr);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint dns_resource_record_new_reverse(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *hostname) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        _cleanup_free_ char *ptr = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(ret);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(address);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(hostname);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = dns_name_reverse(family, address, &ptr);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        key = dns_resource_key_new_consume(DNS_CLASS_IN, DNS_TYPE_PTR, ptr);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!key)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return -ENOMEM;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        ptr = NULL;
0b97208d8c39131f8a7cfcfccb5c40b86af44ee5Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        rr = dns_resource_record_new(key);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!rr)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return -ENOMEM;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        rr->ptr.name = strdup(hostname);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!rr->ptr.name)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return -ENOMEM;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        *ret = rr;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        rr = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(a);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(b);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        r = dns_resource_key_equal(a->key, b->key);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (r <= 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (a->unparseable != b->unparseable)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        switch (a->unparseable ? _DNS_TYPE_INVALID : a->key->type) {
5034c7bcdfc4493ed3c30722e9d897c8da78fedeLennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_SRV:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = dns_name_equal(a->srv.name, b->srv.name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (r <= 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return a->srv.priority == b->srv.priority &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->srv.weight == b->srv.weight &&
5034c7bcdfc4493ed3c30722e9d897c8da78fedeLennart Poettering                       a->srv.port == b->srv.port;
5034c7bcdfc4493ed3c30722e9d897c8da78fedeLennart Poettering
5034c7bcdfc4493ed3c30722e9d897c8da78fedeLennart Poettering        case DNS_TYPE_PTR:
5034c7bcdfc4493ed3c30722e9d897c8da78fedeLennart Poettering        case DNS_TYPE_NS:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_CNAME:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_DNAME:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return dns_name_equal(a->ptr.name, b->ptr.name);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_HINFO:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return strcaseeq(a->hinfo.cpu, b->hinfo.cpu) &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       strcaseeq(a->hinfo.os, b->hinfo.os);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_SPF: /* exactly the same as TXT */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_TXT:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return strv_equal(a->txt.strings, b->txt.strings);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_A:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return memcmp(&a->a.in_addr, &b->a.in_addr, sizeof(struct in_addr)) == 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_AAAA:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return memcmp(&a->aaaa.in6_addr, &b->aaaa.in6_addr, sizeof(struct in6_addr)) == 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_SOA:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = dns_name_equal(a->soa.mname, b->soa.mname);
5034c7bcdfc4493ed3c30722e9d897c8da78fedeLennart Poettering                if (r <= 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                r = dns_name_equal(a->soa.rname, b->soa.rname);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (r <= 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        return r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return a->soa.serial  == b->soa.serial &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->soa.refresh == b->soa.refresh &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->soa.retry   == b->soa.retry &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->soa.expire  == b->soa.expire &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->soa.minimum == b->soa.minimum;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
0b97208d8c39131f8a7cfcfccb5c40b86af44ee5Lennart Poettering        case DNS_TYPE_MX:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (a->mx.priority != b->mx.priority)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return dns_name_equal(a->mx.exchange, b->mx.exchange);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_LOC:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                assert(a->loc.version == b->loc.version);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return a->loc.size == b->loc.size &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->loc.horiz_pre == b->loc.horiz_pre &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->loc.vert_pre == b->loc.vert_pre &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->loc.latitude == b->loc.latitude &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->loc.longitude == b->loc.longitude &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->loc.altitude == b->loc.altitude;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_DS:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return a->ds.key_tag == b->ds.key_tag &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->ds.algorithm == b->ds.algorithm &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->ds.digest_type == b->ds.digest_type &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->ds.digest_size == b->ds.digest_size &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       memcmp(a->ds.digest, b->ds.digest, a->ds.digest_size) == 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_SSHFP:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return a->sshfp.algorithm == b->sshfp.algorithm &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->sshfp.fptype == b->sshfp.fptype &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->sshfp.fingerprint_size == b->sshfp.fingerprint_size &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       memcmp(a->sshfp.fingerprint, b->sshfp.fingerprint, a->sshfp.fingerprint_size) == 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_DNSKEY:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return a->dnskey.zone_key_flag == b->dnskey.zone_key_flag &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->dnskey.sep_flag == b->dnskey.sep_flag &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->dnskey.algorithm == b->dnskey.algorithm &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       a->dnskey.key_size == b->dnskey.key_size &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       memcmp(a->dnskey.key, b->dnskey.key, a->dnskey.key_size) == 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_RRSIG:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                /* do the fast comparisons first */
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (a->rrsig.type_covered != b->rrsig.type_covered ||
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                    a->rrsig.algorithm != b->rrsig.algorithm ||
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                    a->rrsig.labels != b->rrsig.labels ||
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                    a->rrsig.original_ttl != b->rrsig.original_ttl ||
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                    a->rrsig.expiration != b->rrsig.expiration ||
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                    a->rrsig.inception != b->rrsig.inception ||
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                    a->rrsig.key_tag != b->rrsig.key_tag ||
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                    a->rrsig.signature_size != b->rrsig.signature_size ||
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                    memcmp(a->rrsig.signature, b->rrsig.signature, a->rrsig.signature_size) != 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        return false;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return dns_name_equal(a->rrsig.signer, b->rrsig.signer);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_NSEC:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return dns_name_equal(a->nsec.next_domain_name, b->nsec.next_domain_name) &&
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                       bitmap_equal(a->nsec.types, b->nsec.types);
0b97208d8c39131f8a7cfcfccb5c40b86af44ee5Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        case DNS_TYPE_NSEC3:
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return a->nsec3.algorithm == b->nsec3.algorithm &&
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                    a->nsec3.flags == b->nsec3.flags &&
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                    a->nsec3.iterations == b->nsec3.iterations &&
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                    a->nsec3.salt_size == b->nsec3.salt_size &&
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                    memcmp(a->nsec3.salt, b->nsec3.salt, a->nsec3.salt_size) == 0 &&
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                    memcmp(a->nsec3.next_hashed_name, b->nsec3.next_hashed_name, a->nsec3.next_hashed_name_size) == 0 &&
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                    bitmap_equal(a->nsec3.types, b->nsec3.types);
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        default:
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                return a->generic.size == b->generic.size &&
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                        memcmp(a->generic.data, b->generic.data, a->generic.size) == 0;
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        }
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering}
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poetteringstatic char* format_location(uint32_t latitude, uint32_t longitude, uint32_t altitude,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                             uint8_t size, uint8_t horiz_pre, uint8_t vert_pre) {
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        char *s;
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        char NS = latitude >= 1U<<31 ? 'N' : 'S';
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        char EW = longitude >= 1U<<31 ? 'E' : 'W';
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        int lat = latitude >= 1U<<31 ? (int) (latitude - (1U<<31)) : (int) ((1U<<31) - latitude);
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        int lon = longitude >= 1U<<31 ? (int) (longitude - (1U<<31)) : (int) ((1U<<31) - longitude);
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        double alt = altitude >= 10000000u ? altitude - 10000000u : -(double)(10000000u - altitude);
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        double siz = (size >> 4) * exp10((double) (size & 0xF));
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        double hor = (horiz_pre >> 4) * exp10((double) (horiz_pre & 0xF));
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        double ver = (vert_pre >> 4) * exp10((double) (vert_pre & 0xF));
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        if (asprintf(&s, "%d %d %.3f %c %d %d %.3f %c %.2fm %.2fm %.2fm %.2fm",
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     (lat / 60000 / 60),
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     (lat / 60000) % 60,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     (lat % 60000) / 1000.,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     NS,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     (lon / 60000 / 60),
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     (lon / 60000) % 60,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     (lon % 60000) / 1000.,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     EW,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     alt / 100.,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     siz / 100.,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     hor / 100.,
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                     ver / 100.) < 0)
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                return NULL;
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        return s;
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering}
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poetteringstatic int format_timestamp_dns(char *buf, size_t l, time_t sec) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        struct tm tm;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(buf);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        assert(l > strlen("YYYYMMDDHHmmSS"));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!gmtime_r(&sec, &tm))
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return -EINVAL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (strftime(buf, l, "%Y%m%d%H%M%S", &tm) <= 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                return -EINVAL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        return 0;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering}
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic char *format_types(Bitmap *types) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        _cleanup_strv_free_ char **strv = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        _cleanup_free_ char *str = NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        Iterator i;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        unsigned type;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        int r;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        BITMAP_FOREACH(type, types, i) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                if (dns_type_to_string(type)) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        r = strv_extend(&strv, dns_type_to_string(type));
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                } else {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        char *t;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        r = asprintf(&t, "TYPE%u", type);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        r = strv_consume(&strv, t);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                        if (r < 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                                return NULL;
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering                }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        }
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        str = strv_join(strv, " ");
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        if (!str)
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering                return NULL;
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering        return strjoin("( ", str, " )", NULL);
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering}
4d9ced9956755901238fede6fc5a3d7e4e816aa6Lennart Poettering
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringint dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering        _cleanup_free_ char *k = NULL, *t = NULL;
        char *s;
        int r;

        assert(rr);

        r = dns_resource_key_to_string(rr->key, &k);
        if (r < 0)
                return r;

        switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) {

        case DNS_TYPE_SRV:
                r = asprintf(&s, "%s %u %u %u %s",
                             k,
                             rr->srv.priority,
                             rr->srv.weight,
                             rr->srv.port,
                             strna(rr->srv.name));
                if (r < 0)
                        return -ENOMEM;
                break;

        case DNS_TYPE_PTR:
        case DNS_TYPE_NS:
        case DNS_TYPE_CNAME:
        case DNS_TYPE_DNAME:
                s = strjoin(k, " ", rr->ptr.name, NULL);
                if (!s)
                        return -ENOMEM;

                break;

        case DNS_TYPE_HINFO:
                s = strjoin(k, " ", rr->hinfo.cpu, " ", rr->hinfo.os, NULL);
                if (!s)
                        return -ENOMEM;
                break;

        case DNS_TYPE_SPF: /* exactly the same as TXT */
        case DNS_TYPE_TXT:
                t = strv_join_quoted(rr->txt.strings);
                if (!t)
                        return -ENOMEM;

                s = strjoin(k, " ", t, NULL);
                if (!s)
                        return -ENOMEM;

                break;

        case DNS_TYPE_A: {
                _cleanup_free_ char *x = NULL;

                r = in_addr_to_string(AF_INET, (const union in_addr_union*) &rr->a.in_addr, &x);
                if (r < 0)
                        return r;

                s = strjoin(k, " ", x, NULL);
                if (!s)
                        return -ENOMEM;
                break;
        }

        case DNS_TYPE_AAAA:
                r = in_addr_to_string(AF_INET6, (const union in_addr_union*) &rr->aaaa.in6_addr, &t);
                if (r < 0)
                        return r;

                s = strjoin(k, " ", t, NULL);
                if (!s)
                        return -ENOMEM;
                break;

        case DNS_TYPE_SOA:
                r = asprintf(&s, "%s %s %s %u %u %u %u %u",
                             k,
                             strna(rr->soa.mname),
                             strna(rr->soa.rname),
                             rr->soa.serial,
                             rr->soa.refresh,
                             rr->soa.retry,
                             rr->soa.expire,
                             rr->soa.minimum);
                if (r < 0)
                        return -ENOMEM;
                break;

        case DNS_TYPE_MX:
                r = asprintf(&s, "%s %u %s",
                             k,
                             rr->mx.priority,
                             rr->mx.exchange);
                if (r < 0)
                        return -ENOMEM;
                break;

        case DNS_TYPE_LOC:
                assert(rr->loc.version == 0);

                t = format_location(rr->loc.latitude,
                                    rr->loc.longitude,
                                    rr->loc.altitude,
                                    rr->loc.size,
                                    rr->loc.horiz_pre,
                                    rr->loc.vert_pre);
                if (!t)
                        return -ENOMEM;

                s = strjoin(k, " ", t, NULL);
                if (!s)
                        return -ENOMEM;
                break;

        case DNS_TYPE_DS:
                t = hexmem(rr->ds.digest, rr->ds.digest_size);
                if (!t)
                        return -ENOMEM;

                r = asprintf(&s, "%s %u %u %u %s",
                             k,
                             rr->ds.key_tag,
                             rr->ds.algorithm,
                             rr->ds.digest_type,
                             t);
                if (r < 0)
                        return -ENOMEM;
                break;

        case DNS_TYPE_SSHFP:
                t = hexmem(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size);
                if (!t)
                        return -ENOMEM;

                r = asprintf(&s, "%s %u %u %s",
                             k,
                             rr->sshfp.algorithm,
                             rr->sshfp.fptype,
                             t);
                if (r < 0)
                        return -ENOMEM;
                break;

        case DNS_TYPE_DNSKEY: {
                const char *alg;

                alg = dnssec_algorithm_to_string(rr->dnskey.algorithm);

                t = base64mem(rr->dnskey.key, rr->dnskey.key_size);
                if (!t)
                        return -ENOMEM;

                r = asprintf(&s, "%s %u 3 %.*s%.*u %s",
                             k,
                             dnskey_to_flags(rr),
                             alg ? -1 : 0, alg,
                             alg ? 0 : 1, alg ? 0u : (unsigned) rr->dnskey.algorithm,
                             t);
                if (r < 0)
                        return -ENOMEM;
                break;
        }

        case DNS_TYPE_RRSIG: {
                const char *type, *alg;
                char expiration[strlen("YYYYMMDDHHmmSS") + 1], inception[strlen("YYYYMMDDHHmmSS") + 1];

                type = dns_type_to_string(rr->rrsig.type_covered);
                alg = dnssec_algorithm_to_string(rr->rrsig.algorithm);

                t = base64mem(rr->rrsig.signature, rr->rrsig.signature_size);
                if (!t)
                        return -ENOMEM;

                r = format_timestamp_dns(expiration, sizeof(expiration), rr->rrsig.expiration);
                if (r < 0)
                        return r;

                r = format_timestamp_dns(inception, sizeof(inception), rr->rrsig.inception);
                if (r < 0)
                        return r;

                /* TYPE?? follows
                 * http://tools.ietf.org/html/rfc3597#section-5 */

                r = asprintf(&s, "%s %s%.*u %.*s%.*u %u %u %s %s %u %s %s",
                             k,
                             type ?: "TYPE",
                             type ? 0 : 1, type ? 0u : (unsigned) rr->rrsig.type_covered,
                             alg ? -1 : 0, alg,
                             alg ? 0 : 1, alg ? 0u : (unsigned) rr->rrsig.algorithm,
                             rr->rrsig.labels,
                             rr->rrsig.original_ttl,
                             expiration,
                             inception,
                             rr->rrsig.key_tag,
                             rr->rrsig.signer,
                             t);
                if (r < 0)
                        return -ENOMEM;
                break;
        }

        case DNS_TYPE_NSEC:
                t = format_types(rr->nsec.types);
                if (!t)
                        return -ENOMEM;

                r = asprintf(&s, "%s %s %s",
                             k,
                             rr->nsec.next_domain_name,
                             t);
                if (r < 0)
                        return -ENOMEM;
                break;

        case DNS_TYPE_NSEC3: {
                _cleanup_free_ char *salt = NULL, *hash = NULL;

                if (rr->nsec3.salt_size > 0) {
                        salt = hexmem(rr->nsec3.salt, rr->nsec3.salt_size);
                        if (!salt)
                                return -ENOMEM;
                }

                hash = base32hexmem(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size, false);
                if (!hash)
                        return -ENOMEM;

                t = format_types(rr->nsec3.types);
                if (!t)
                        return -ENOMEM;

                r = asprintf(&s, "%s %"PRIu8" %"PRIu8" %"PRIu16" %s %s %s",
                             k,
                             rr->nsec3.algorithm,
                             rr->nsec3.flags,
                             rr->nsec3.iterations,
                             rr->nsec3.salt_size > 0 ? salt : "-",
                             hash,
                             t);
                if (r < 0)
                        return -ENOMEM;

                break;
        }

        default:
                t = hexmem(rr->generic.data, rr->generic.size);
                if (!t)
                        return -ENOMEM;

                r = asprintf(&s, "%s \\# %zu %s", k, rr->generic.size, t);
                if (r < 0)
                        return -ENOMEM;
                break;
        }

        *ret = s;
        return 0;
}

const char *dns_class_to_string(uint16_t class) {

        switch (class) {

        case DNS_CLASS_IN:
                return "IN";

        case DNS_CLASS_ANY:
                return "ANY";
        }

        return NULL;
}

int dns_class_from_string(const char *s, uint16_t *class) {
        assert(s);
        assert(class);

        if (strcaseeq(s, "IN"))
                *class = DNS_CLASS_IN;
        else if (strcaseeq(s, "ANY"))
                *class = DNS_TYPE_ANY;
        else
                return -EINVAL;

        return 0;
}