src/resolve/resolved-manager.c

	resolved-manager.c revision 987d561fe202568c0a2880cf047c7833fd365c7a
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer/***
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer  This file is part of systemd.
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer  Copyright 2014 Tom Gundersen <teg@jklm.no>
0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer
0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer  systemd is free software; you can redistribute it and/or modify it
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer  under the terms of the GNU Lesser General Public License as published by
0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer  the Free Software Foundation; either version 2.1 of the License, or
0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer  (at your option) any later version.
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer  systemd is distributed in the hope that it will be useful, but
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer  WITHOUT ANY WARRANTY; without even the implied warranty of
0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer  Lesser General Public License for more details.
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer  You should have received a copy of the GNU Lesser General Public License
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer  along with systemd; If not, see <http://www.gnu.org/licenses/>.
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer ***/
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include <arpa/inet.h>
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include <resolv.h>
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include <linux/if.h>
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include "resolved.h"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include "event-util.h"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include "network-util.h"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include "sd-dhcp-lease.h"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include "dhcp-lease-internal.h"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include "network-internal.h"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer#include "conf-parser.h"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerstatic int set_fallback_dns(Manager *m, const char *string) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        char *word, *state;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        size_t length;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        int r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(m);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(string);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        FOREACH_WORD_QUOTED(word, length, string, state) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                _cleanup_free_ Address *address = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                Address *tail;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                _cleanup_free_ char *addrstr = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                address = new0(Address, 1);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                if (!address)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        return -ENOMEM;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                addrstr = strndup(word, length);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                if (!addrstr)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        return -ENOMEM;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                r = net_parse_inaddr(addrstr, &address->family, &address->in_addr);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                if (r < 0) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        log_debug("Ignoring invalid DNS address '%s'", addrstr);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        continue;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                LIST_FIND_TAIL(addresses, m->fallback_dns, tail);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                LIST_INSERT_AFTER(addresses, m->fallback_dns, tail, address);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                address = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        return 0;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerint config_parse_dnsv(
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                const char *unit,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                const char *filename,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                unsigned line,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                const char *section,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                unsigned section_line,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                const char *lvalue,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                int ltype,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                const char *rvalue,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                void *data,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                void *userdata) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        Manager *m = userdata;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        Address *address;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(filename);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(lvalue);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(rvalue);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(m);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        while ((address = m->fallback_dns)) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                LIST_REMOVE(addresses, m->fallback_dns, address);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                free(address);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        set_fallback_dns(m, rvalue);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        return 0;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerstatic int manager_parse_config_file(Manager *m) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        int r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(m);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        r = config_parse(NULL, "/etc/systemd/resolved.conf", NULL,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                         "Resolve\0", config_item_perf_lookup, (void*) resolved_gperf_lookup,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                         false, false, m);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (r < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                log_warning("Failed to parse configuration file: %s", strerror(-r));
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        return r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerint manager_new(Manager **ret) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        _cleanup_manager_free_ Manager *m = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        int r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        m = new0(Manager, 1);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (!m)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return -ENOMEM;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        r = set_fallback_dns(m, DNS_SERVERS);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (r < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return r;
0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        r = manager_parse_config_file(m);
0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer        if (r < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        r = sd_event_default(&m->event);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (r < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        sd_event_add_signal(m->event, NULL, SIGTERM, NULL,  NULL);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        sd_event_set_watchdog(m->event, true);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        *ret = m;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        m = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        return 0;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyervoid manager_free(Manager *m) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        Address *address;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (!m)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        sd_event_unref(m->event);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        while ((address = m->fallback_dns)) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                LIST_REMOVE(addresses, m->fallback_dns, address);
0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer                free(address);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        }
0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        free(m);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerstatic void append_dns(FILE *f, void *dns, unsigned char family, unsigned *count) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        char buf[INET6_ADDRSTRLEN];
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        const char *address;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(f);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(dns);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(count);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        address = inet_ntop(family, dns, buf, INET6_ADDRSTRLEN);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (!address) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                log_warning("Invalid DNS address. Ignoring.");
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (*count == MAXNS)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                fputs("# Too many DNS servers configured, the following entries "
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                      "may be ignored\n", f);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        fprintf(f, "nameserver %s\n", address);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        (*count) ++;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerint manager_update_resolv_conf(Manager *m) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        const char *path = "/run/systemd/resolve/resolv.conf";
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        _cleanup_free_ char *temp_path = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        _cleanup_fclose_ FILE *f = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer         _cleanup_free_ unsigned *indices = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        Address *address;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        unsigned count = 0;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        int n, r, i;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(m);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        r = fopen_temporary(path, &f, &temp_path);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (r < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        fchmod(fileno(f), 0644);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        fputs("# This file is managed by systemd-resolved(8). Do not edit.\n#\n"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer              "# Third party programs must not access this file directly, but\n"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer              "# only through the symlink at /etc/resolv.conf. To manage\n"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer              "# resolv.conf(5) in a different way, replace the symlink by a\n"
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer              "# static file or a different symlink.\n\n", f);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        n = sd_network_get_ifindices(&indices);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (n < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                n = 0;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        for (i = 0; i < n; i++) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                _cleanup_dhcp_lease_unref_ sd_dhcp_lease *lease = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                struct in_addr *nameservers;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                struct in6_addr *nameservers6;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                size_t nameservers_size;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                r = sd_network_dhcp_use_dns(indices[i]);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                if (r > 0) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        r = sd_network_get_dhcp_lease(indices[i], &lease);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        if (r >= 0) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                                r = sd_dhcp_lease_get_dns(lease, &nameservers, &nameservers_size);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                                if (r >= 0) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                                        unsigned j;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                                        for (j = 0; j < nameservers_size; j++)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                                                append_dns(f, &nameservers[j], AF_INET, &count);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                                }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                r = sd_network_get_dns(indices[i], &nameservers, &nameservers_size);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                if (r >= 0) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        unsigned j;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        for (j = 0; j < nameservers_size; j++)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                                append_dns(f, &nameservers[j], AF_INET, &count);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        free(nameservers);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                r = sd_network_get_dns6(indices[i], &nameservers6, &nameservers_size);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                if (r >= 0) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        unsigned j;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        for (j = 0; j < nameservers_size; j++)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                                append_dns(f, &nameservers6[j], AF_INET6, &count);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                        free(nameservers6);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        LIST_FOREACH(addresses, address, m->fallback_dns)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                append_dns(f, &address->in_addr, address->family, &count);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        fflush(f);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (ferror(f) || rename(temp_path, path) < 0) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                r = -errno;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                unlink(path);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                unlink(temp_path);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        }
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        return 0;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerstatic int manager_network_event_handler(sd_event_source *s, int fd, uint32_t revents,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                                         void *userdata) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        Manager *m = userdata;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        int r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        assert(m);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        r = manager_update_resolv_conf(m);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (r < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                log_warning("Could not update resolv.conf: %s", strerror(-r));
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        sd_network_monitor_flush(m->network_monitor);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        return 0;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerint manager_network_monitor_listen(Manager *m) {
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        _cleanup_event_source_unref_ sd_event_source *event_source = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        _cleanup_network_monitor_unref_ sd_network_monitor *monitor = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        int r, fd, events;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        r = sd_network_monitor_new(NULL, &monitor);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (r < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        fd = sd_network_monitor_get_fd(monitor);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (fd < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return fd;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        events = sd_network_monitor_get_events(monitor);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (events < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return events;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        r = sd_event_add_io(m->event, &event_source, fd, events,
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                            &manager_network_event_handler, m);
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        if (r < 0)
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer                return r;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        m->network_monitor = monitor;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        m->network_event_source = event_source;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        monitor = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        event_source = NULL;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer        return 0;
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}
898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer