Пример #1
0
static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
        _cleanup_address_free_ Address *ll_addr = NULL;
        _cleanup_route_free_ Route *route = NULL;
        struct in_addr address;
        int r;

        assert(ll);
        assert(link);

        r = sd_ipv4ll_get_address(ll, &address);
        if (r == -ENOENT)
                return 0;
        else if (r < 0)
                return r;

        log_link_debug(link, "IPv4 link-local claim %u.%u.%u.%u",
                       ADDRESS_FMT_VAL(address));

        r = address_new(&ll_addr);
        if (r < 0)
                return r;

        ll_addr->family = AF_INET;
        ll_addr->in_addr.in = address;
        ll_addr->prefixlen = 16;
        ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htonl(0xfffffffflu >> ll_addr->prefixlen);
        ll_addr->scope = RT_SCOPE_LINK;

        r = address_configure(ll_addr, link, ipv4ll_address_handler, false);
        if (r < 0)
                return r;

        link->ipv4ll_address = false;

        r = route_new(&route);
        if (r < 0)
                return r;

        route->family = AF_INET;
        route->scope = RT_SCOPE_LINK;
        route->protocol = RTPROT_STATIC;
        route->priority = IPV4LL_ROUTE_METRIC;

        r = route_configure(route, link, ipv4ll_route_handler);
        if (r < 0)
                return r;

        link->ipv4ll_route = false;

        return 0;
}
Пример #2
0
static int ipv4ll_address_lost(Link *link) {
        _cleanup_address_free_ Address *address = NULL;
        _cleanup_route_free_ Route *route = NULL;
        struct in_addr addr;
        int r;

        assert(link);

        link->ipv4ll_route = false;
        link->ipv4ll_address =  false;

        r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
        if (r < 0)
                return 0;

        log_link_debug(link, "IPv4 link-local release %u.%u.%u.%u", ADDRESS_FMT_VAL(addr));

        r = address_new_dynamic(&address);
        if (r < 0) {
                log_link_error(link, "Could not allocate address: %s", strerror(-r));
                return r;
        }

        address->family = AF_INET;
        address->in_addr.in = addr;
        address->prefixlen = 16;
        address->scope = RT_SCOPE_LINK;

        address_drop(address, link, &link_address_drop_handler);

        r = route_new_dynamic(&route, RTPROT_UNSPEC);
        if (r < 0) {
                log_link_error(link, "Could not allocate route: %s",
                               strerror(-r));
                return r;
        }

        route->family = AF_INET;
        route->scope = RT_SCOPE_LINK;
        route->metrics = IPV4LL_ROUTE_METRIC;

        route_drop(route, link, &link_route_drop_handler);

        link_client_handler(link);

        return 0;
}
Пример #3
0
static int ipv4ll_address_lost(Link *link) {
        _cleanup_address_free_ Address *address = NULL;
        _cleanup_route_free_ Route *route = NULL;
        struct in_addr addr;
        int r;

        assert(link);

        link->ipv4ll_route = false;
        link->ipv4ll_address = false;

        r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
        if (r < 0)
                return 0;

        log_link_debug(link, "IPv4 link-local release %u.%u.%u.%u", ADDRESS_FMT_VAL(addr));

        r = address_new(&address);
        if (r < 0) {
                log_link_error_errno(link, r, "Could not allocate address: %m");
                return r;
        }

        address->family = AF_INET;
        address->in_addr.in = addr;
        address->prefixlen = 16;
        address->scope = RT_SCOPE_LINK;

        address_remove(address, link, &link_address_remove_handler);

        r = route_new(&route);
        if (r < 0) {
                log_link_error_errno(link, r, "Could not allocate route: %m");
                return r;
        }

        route->family = AF_INET;
        route->scope = RT_SCOPE_LINK;
        route->priority = IPV4LL_ROUTE_METRIC;

        route_remove(route, link, &link_route_remove_handler);

        link_check_ready(link);

        return 0;
}
Пример #4
0
static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) {
        sd_dhcp_lease *lease;
        struct in_addr address;
        struct in_addr netmask;
        struct in_addr gateway;
        unsigned prefixlen;
        uint32_t lifetime = CACHE_INFO_INFINITY_LIFE_TIME;
        int r;

        assert(client);
        assert(link);

        r = sd_dhcp_client_get_lease(client, &lease);
        if (r < 0)
                return log_link_error_errno(link, r, "DHCP error: No lease: %m");

        r = sd_dhcp_lease_get_address(lease, &address);
        if (r < 0)
                return log_link_error_errno(link, r, "DHCP error: No address: %m");

        r = sd_dhcp_lease_get_netmask(lease, &netmask);
        if (r < 0)
                return log_link_error_errno(link, r, "DHCP error: No netmask: %m");

        prefixlen = in_addr_netmask_to_prefixlen(&netmask);

        r = sd_dhcp_lease_get_router(lease, &gateway);
        if (r < 0 && r != -ENODATA)
                return log_link_error_errno(link, r, "DHCP error: Could not get gateway: %m");

        if (r >= 0)
                log_struct(LOG_INFO,
                           LOG_LINK_INTERFACE(link),
                           LOG_LINK_MESSAGE(link, "DHCPv4 address %u.%u.%u.%u/%u via %u.%u.%u.%u",
                                            ADDRESS_FMT_VAL(address),
                                            prefixlen,
                                            ADDRESS_FMT_VAL(gateway)),
                           "ADDRESS=%u.%u.%u.%u", ADDRESS_FMT_VAL(address),
                           "PREFIXLEN=%u", prefixlen,
                           "GATEWAY=%u.%u.%u.%u", ADDRESS_FMT_VAL(gateway),
                           NULL);
        else
                log_struct(LOG_INFO,
                           LOG_LINK_INTERFACE(link),
                           LOG_LINK_MESSAGE(link, "DHCPv4 address %u.%u.%u.%u/%u",
                                            ADDRESS_FMT_VAL(address),
                                            prefixlen),
                           "ADDRESS=%u.%u.%u.%u", ADDRESS_FMT_VAL(address),
                           "PREFIXLEN=%u", prefixlen,
                           NULL);

        link->dhcp_lease = sd_dhcp_lease_ref(lease);
        link_dirty(link);

        if (link->network->dhcp_use_mtu) {
                uint16_t mtu;

                r = sd_dhcp_lease_get_mtu(lease, &mtu);
                if (r >= 0) {
                        r = link_set_mtu(link, mtu);
                        if (r < 0)
                                log_link_error_errno(link, r, "Failed to set MTU to %" PRIu16 ": %m", mtu);
                }
        }

        if (link->network->dhcp_use_hostname) {
                const char *hostname = NULL;

                if (link->network->dhcp_hostname)
                        hostname = link->network->dhcp_hostname;
                else
                        (void) sd_dhcp_lease_get_hostname(lease, &hostname);

                if (hostname) {
                        r = manager_set_hostname(link->manager, hostname);
                        if (r < 0)
                                log_link_error_errno(link, r, "Failed to set transient hostname to '%s': %m", hostname);
                }
        }

        if (link->network->dhcp_use_timezone) {
                const char *tz = NULL;

                (void) sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz);

                if (tz) {
                        r = manager_set_timezone(link->manager, tz);
                        if (r < 0)
                                log_link_error_errno(link, r, "Failed to set timezone to '%s': %m", tz);
                }
        }

        if (!link->network->dhcp_critical) {
                r = sd_dhcp_lease_get_lifetime(link->dhcp_lease, &lifetime);
                if (r < 0) {
                        log_link_warning_errno(link, r, "DHCP error: no lifetime: %m");
                        return r;
                }
        }

        r = dhcp4_update_address(link, &address, &netmask, lifetime);
        if (r < 0) {
                log_link_warning_errno(link, r, "Could not update IP address: %m");
                link_enter_failed(link);
                return r;
        }

        return 0;
}
Пример #5
0
static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) {
        const struct in_addr *router;
        sd_dhcp_lease *lease;
        struct in_addr address;
        struct in_addr netmask;
        unsigned prefixlen;
        uint32_t lifetime = CACHE_INFO_INFINITY_LIFE_TIME;
        int r;

        assert(client);
        assert(link);

        r = sd_dhcp_client_get_lease(client, &lease);
        if (r < 0)
                return log_link_error_errno(link, r, "DHCP error: No lease: %m");

        r = sd_dhcp_lease_get_address(lease, &address);
        if (r < 0)
                return log_link_error_errno(link, r, "DHCP error: No address: %m");

        r = sd_dhcp_lease_get_netmask(lease, &netmask);
        if (r < 0)
                return log_link_error_errno(link, r, "DHCP error: No netmask: %m");

        prefixlen = in4_addr_netmask_to_prefixlen(&netmask);

        r = sd_dhcp_lease_get_router(lease, &router);
        if (r < 0 && r != -ENODATA)
                return log_link_error_errno(link, r, "DHCP error: Could not get gateway: %m");

        if (r > 0 && !in4_addr_is_null(&router[0]))
                log_struct(LOG_INFO,
                           LOG_LINK_INTERFACE(link),
                           LOG_LINK_MESSAGE(link, "DHCPv4 address %u.%u.%u.%u/%u via %u.%u.%u.%u",
                                            ADDRESS_FMT_VAL(address),
                                            prefixlen,
                                            ADDRESS_FMT_VAL(router[0])),
                           "ADDRESS=%u.%u.%u.%u", ADDRESS_FMT_VAL(address),
                           "PREFIXLEN=%u", prefixlen,
                           "GATEWAY=%u.%u.%u.%u", ADDRESS_FMT_VAL(router[0]));
        else
                log_struct(LOG_INFO,
                           LOG_LINK_INTERFACE(link),
                           LOG_LINK_MESSAGE(link, "DHCPv4 address %u.%u.%u.%u/%u",
                                            ADDRESS_FMT_VAL(address),
                                            prefixlen),
                           "ADDRESS=%u.%u.%u.%u", ADDRESS_FMT_VAL(address),
                           "PREFIXLEN=%u", prefixlen);

        link->dhcp_lease = sd_dhcp_lease_ref(lease);
        link_dirty(link);

        if (link->network->dhcp_use_mtu) {
                uint16_t mtu;

                r = sd_dhcp_lease_get_mtu(lease, &mtu);
                if (r >= 0) {
                        r = link_set_mtu(link, mtu, true);
                        if (r < 0)
                                log_link_error_errno(link, r, "Failed to set MTU to %" PRIu16 ": %m", mtu);
                }
        }

        if (link->network->dhcp_use_hostname) {
                const char *dhcpname = NULL;
                _cleanup_free_ char *hostname = NULL;

                if (link->network->dhcp_hostname)
                        dhcpname = link->network->dhcp_hostname;
                else
                        (void) sd_dhcp_lease_get_hostname(lease, &dhcpname);

                if (dhcpname) {
                        r = shorten_overlong(dhcpname, &hostname);
                        if (r < 0)
                                log_link_warning_errno(link, r, "Unable to shorten overlong DHCP hostname '%s', ignoring: %m", dhcpname);
                        if (r == 1)
                                log_link_notice(link, "Overlong DHCP hostname received, shortened from '%s' to '%s'", dhcpname, hostname);
                }

                if (hostname) {
                        r = manager_set_hostname(link->manager, hostname);
                        if (r < 0)
                                log_link_error_errno(link, r, "Failed to set transient hostname to '%s': %m", hostname);
                }
        }

        if (link->network->dhcp_use_timezone) {
                const char *tz = NULL;

                (void) sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz);

                if (tz) {
                        r = manager_set_timezone(link->manager, tz);
                        if (r < 0)
                                log_link_error_errno(link, r, "Failed to set timezone to '%s': %m", tz);
                }
        }

        if (!link->network->dhcp_critical) {
                r = sd_dhcp_lease_get_lifetime(link->dhcp_lease, &lifetime);
                if (r < 0)
                        return log_link_warning_errno(link, r, "DHCP error: no lifetime: %m");
        }

        r = dhcp4_update_address(link, &address, &netmask, lifetime);
        if (r < 0) {
                log_link_warning_errno(link, r, "Could not update IP address: %m");
                link_enter_failed(link);
                return r;
        }

        return 0;
}
Пример #6
0
static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) {
        sd_dhcp_lease *lease;
        struct in_addr address;
        struct in_addr netmask;
        struct in_addr gateway;
        unsigned prefixlen;
        uint32_t lifetime = CACHE_INFO_INFINITY_LIFE_TIME;
        int r;

        assert(client);
        assert(link);

        r = sd_dhcp_client_get_lease(client, &lease);
        if (r < 0) {
                log_link_warning(link, "DHCP error: no lease: %s",
                                 strerror(-r));
                return r;
        }

        r = sd_dhcp_lease_get_address(lease, &address);
        if (r < 0) {
                log_link_warning(link, "DHCP error: no address: %s",
                                 strerror(-r));
                return r;
        }

        r = sd_dhcp_lease_get_netmask(lease, &netmask);
        if (r < 0) {
                log_link_warning(link, "DHCP error: no netmask: %s",
                                 strerror(-r));
                return r;
        }

        prefixlen = in_addr_netmask_to_prefixlen(&netmask);

        r = sd_dhcp_lease_get_router(lease, &gateway);
        if (r < 0 && r != -ENOENT) {
                log_link_warning(link, "DHCP error: could not get gateway: %s",
                                 strerror(-r));
                return r;
        }

        if (r >= 0)
                log_link_struct(link, LOG_INFO,
                                "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u via %u.%u.%u.%u",
                                 IFNAMSIZ,
                                 link->ifname,
                                 ADDRESS_FMT_VAL(address),
                                 prefixlen,
                                 ADDRESS_FMT_VAL(gateway),
                                 "ADDRESS=%u.%u.%u.%u",
                                 ADDRESS_FMT_VAL(address),
                                 "PREFIXLEN=%u",
                                 prefixlen,
                                 "GATEWAY=%u.%u.%u.%u",
                                 ADDRESS_FMT_VAL(gateway),
                                 NULL);
        else
                log_link_struct(link, LOG_INFO,
                                "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u",
                                 IFNAMSIZ,
                                 link->ifname,
                                 ADDRESS_FMT_VAL(address),
                                 prefixlen,
                                 "ADDRESS=%u.%u.%u.%u",
                                 ADDRESS_FMT_VAL(address),
                                 "PREFIXLEN=%u",
                                 prefixlen,
                                 NULL);

        link->dhcp_lease = lease;

        if (link->network->dhcp_mtu) {
                uint16_t mtu;

                r = sd_dhcp_lease_get_mtu(lease, &mtu);
                if (r >= 0) {
                        r = link_set_mtu(link, mtu);
                        if (r < 0)
                                log_link_error(link, "Failed to set MTU "
                                               "to %" PRIu16, mtu);
                }
        }

        if (link->network->dhcp_hostname) {
                const char *hostname;

                r = sd_dhcp_lease_get_hostname(lease, &hostname);
                if (r >= 0) {
                        r = link_set_hostname(link, hostname);
                        if (r < 0)
                                log_link_error(link,
                                               "Failed to set transient hostname to '%s'",
                                               hostname);
                }
        }

        if (!link->network->dhcp_critical) {
                r = sd_dhcp_lease_get_lifetime(link->dhcp_lease,
                                               &lifetime);
                if (r < 0) {
                        log_link_warning(link,
                                         "DHCP error: no lifetime: %s",
                                         strerror(-r));
                        return r;
                }
        }

        r = dhcp4_update_address(link, &address, &netmask, lifetime);
        if (r < 0) {
                log_link_warning(link, "could not update IP address: %s",
                                 strerror(-r));
                link_enter_failed(link);
                return r;
        }

        return 0;
}