/* SPDX-License-Identifier: LGPL-2.1+ */ #include #include #include #include "alloc-util.h" #include "bus-common-errors.h" #include "bus-util.h" #include "dns-domain.h" #include "networkd-link-bus.h" #include "networkd-link.h" #include "networkd-manager.h" #include "parse-util.h" #include "resolve-util.h" #include "strv.h" #include "user-util.h" BUS_DEFINE_PROPERTY_GET_ENUM(property_get_operational_state, link_operstate, LinkOperationalState); BUS_DEFINE_PROPERTY_GET_ENUM(property_get_carrier_state, link_carrier_state, LinkCarrierState); BUS_DEFINE_PROPERTY_GET_ENUM(property_get_address_state, link_address_state, LinkAddressState); static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_administrative_state, link_state, LinkState); static int property_get_bit_rates( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { Link *link = userdata; Manager *manager; double interval_sec; uint64_t tx, rx; assert(bus); assert(reply); assert(userdata); manager = link->manager; if (!manager->use_speed_meter) return sd_bus_error_set(error, BUS_ERROR_SPEED_METER_INACTIVE, "Speed meter is disabled."); if (manager->speed_meter_usec_old == 0) return sd_bus_error_set(error, BUS_ERROR_SPEED_METER_INACTIVE, "Speed meter is not active."); if (!link->stats_updated) return sd_bus_error_set(error, BUS_ERROR_SPEED_METER_INACTIVE, "Failed to measure bit-rates."); assert(manager->speed_meter_usec_new > manager->speed_meter_usec_old); interval_sec = (manager->speed_meter_usec_new - manager->speed_meter_usec_old) / USEC_PER_SEC; if (link->stats_new.tx_bytes > link->stats_old.tx_bytes) tx = (uint64_t) ((link->stats_new.tx_bytes - link->stats_old.tx_bytes) / interval_sec); else tx = (uint64_t) ((UINT64_MAX - (link->stats_old.tx_bytes - link->stats_new.tx_bytes)) / interval_sec); if (link->stats_new.rx_bytes > link->stats_old.rx_bytes) rx = (uint64_t) ((link->stats_new.rx_bytes - link->stats_old.rx_bytes) / interval_sec); else rx = (uint64_t) ((UINT64_MAX - (link->stats_old.rx_bytes - link->stats_new.rx_bytes)) / interval_sec); return sd_bus_message_append(reply, "(tt)", tx, rx); } static int verify_managed_link(Link *l, sd_bus_error *error) { assert(l); if (l->flags & IFF_LOOPBACK) return sd_bus_error_setf(error, BUS_ERROR_LINK_BUSY, "Link %s is loopback device.", l->ifname); return 0; } int bus_link_method_set_ntp_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_strv_free_ char **ntp = NULL; Link *l = userdata; int r; char **i; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = sd_bus_message_read_strv(message, &ntp); if (r < 0) return r; STRV_FOREACH(i, ntp) { r = dns_name_is_valid_or_address(*i); if (r < 0) return r; if (r == 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid NTP server: %s", *i); } r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.set-ntp-servers", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ strv_free_and_replace(l->ntp, ntp); (void) link_dirty(l); return sd_bus_reply_method_return(message, NULL); } int bus_link_method_set_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_free_ struct in_addr_data *dns = NULL; size_t allocated = 0, n = 0; Link *l = userdata; int r; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = sd_bus_message_enter_container(message, 'a', "(iay)"); if (r < 0) return r; for (;;) { int family; size_t sz; const void *d; assert_cc(sizeof(int) == sizeof(int32_t)); r = sd_bus_message_enter_container(message, 'r', "iay"); if (r < 0) return r; if (r == 0) break; r = sd_bus_message_read(message, "i", &family); if (r < 0) return r; if (!IN_SET(family, AF_INET, AF_INET6)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family); r = sd_bus_message_read_array(message, 'y', &d, &sz); if (r < 0) return r; if (sz != FAMILY_ADDRESS_SIZE(family)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address size"); if (!dns_server_address_valid(family, d)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid DNS server address"); r = sd_bus_message_exit_container(message); if (r < 0) return r; if (!GREEDY_REALLOC(dns, allocated, n+1)) return -ENOMEM; dns[n].family = family; memcpy(&dns[n].address, d, sz); n++; } r = sd_bus_message_exit_container(message); if (r < 0) return r; r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.set-dns-servers", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ free_and_replace(l->dns, dns); l->n_dns = n; (void) link_dirty(l); return sd_bus_reply_method_return(message, NULL); } int bus_link_method_set_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_(ordered_set_freep) OrderedSet *search_domains = NULL, *route_domains = NULL; Link *l = userdata; int r; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = sd_bus_message_enter_container(message, 'a', "(sb)"); if (r < 0) return r; for (;;) { _cleanup_free_ char *str = NULL; OrderedSet **domains; const char *name; int route_only; r = sd_bus_message_read(message, "(sb)", &name, &route_only); if (r < 0) return r; if (r == 0) break; r = dns_name_is_valid(name); if (r < 0) return r; if (r == 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid search domain %s", name); if (!route_only && dns_name_is_root(name)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Root domain is not suitable as search domain"); r = dns_name_normalize(name, 0, &str); if (r < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid search domain %s", name); domains = route_only ? &route_domains : &search_domains; r = ordered_set_ensure_allocated(domains, &string_hash_ops); if (r < 0) return r; r = ordered_set_put(*domains, str); if (r < 0) return r; TAKE_PTR(str); } r = sd_bus_message_exit_container(message); if (r < 0) return r; r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.set-domains", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ ordered_set_free_free(l->search_domains); ordered_set_free_free(l->route_domains); l->search_domains = TAKE_PTR(search_domains); l->route_domains = TAKE_PTR(route_domains); (void) link_dirty(l); return sd_bus_reply_method_return(message, NULL); } int bus_link_method_set_default_route(sd_bus_message *message, void *userdata, sd_bus_error *error) { Link *l = userdata; int r, b; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = sd_bus_message_read(message, "b", &b); if (r < 0) return r; r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.set-default-route", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ if (l->dns_default_route != b) { l->dns_default_route = b; (void) link_dirty(l); } return sd_bus_reply_method_return(message, NULL); } int bus_link_method_set_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) { Link *l = userdata; ResolveSupport mode; const char *llmnr; int r; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = sd_bus_message_read(message, "s", &llmnr); if (r < 0) return r; if (isempty(llmnr)) mode = RESOLVE_SUPPORT_YES; else { mode = resolve_support_from_string(llmnr); if (mode < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid LLMNR setting: %s", llmnr); } r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.set-llmnr", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ if (l->llmnr != mode) { l->llmnr = mode; (void) link_dirty(l); } return sd_bus_reply_method_return(message, NULL); } int bus_link_method_set_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) { Link *l = userdata; ResolveSupport mode; const char *mdns; int r; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = sd_bus_message_read(message, "s", &mdns); if (r < 0) return r; if (isempty(mdns)) mode = RESOLVE_SUPPORT_NO; else { mode = resolve_support_from_string(mdns); if (mode < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid MulticastDNS setting: %s", mdns); } r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.set-mdns", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ if (l->mdns != mode) { l->mdns = mode; (void) link_dirty(l); } return sd_bus_reply_method_return(message, NULL); } int bus_link_method_set_dns_over_tls(sd_bus_message *message, void *userdata, sd_bus_error *error) { Link *l = userdata; const char *dns_over_tls; DnsOverTlsMode mode; int r; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = sd_bus_message_read(message, "s", &dns_over_tls); if (r < 0) return r; if (isempty(dns_over_tls)) mode = _DNS_OVER_TLS_MODE_INVALID; else { mode = dns_over_tls_mode_from_string(dns_over_tls); if (mode < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid DNSOverTLS setting: %s", dns_over_tls); } r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.set-dns-over-tls", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ if (l->dns_over_tls_mode != mode) { l->dns_over_tls_mode = mode; (void) link_dirty(l); } return sd_bus_reply_method_return(message, NULL); } int bus_link_method_set_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) { Link *l = userdata; const char *dnssec; DnssecMode mode; int r; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = sd_bus_message_read(message, "s", &dnssec); if (r < 0) return r; if (isempty(dnssec)) mode = _DNSSEC_MODE_INVALID; else { mode = dnssec_mode_from_string(dnssec); if (mode < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid DNSSEC setting: %s", dnssec); } r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.set-dnssec", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ if (l->dnssec_mode != mode) { l->dnssec_mode = mode; (void) link_dirty(l); } return sd_bus_reply_method_return(message, NULL); } int bus_link_method_set_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_set_free_free_ Set *ns = NULL; _cleanup_strv_free_ char **ntas = NULL; Link *l = userdata; int r; char **i; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = sd_bus_message_read_strv(message, &ntas); if (r < 0) return r; STRV_FOREACH(i, ntas) { r = dns_name_is_valid(*i); if (r < 0) return r; if (r == 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid negative trust anchor domain: %s", *i); } ns = set_new(&dns_name_hash_ops); if (!ns) return -ENOMEM; STRV_FOREACH(i, ntas) { r = set_put_strdup(ns, *i); if (r < 0) return r; } r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.set-dnssec-negative-trust-anchors", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ set_free_free(l->dnssec_negative_trust_anchors); l->dnssec_negative_trust_anchors = TAKE_PTR(ns); (void) link_dirty(l); return sd_bus_reply_method_return(message, NULL); } int bus_link_method_revert_ntp(sd_bus_message *message, void *userdata, sd_bus_error *error) { Link *l = userdata; int r; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.revert-ntp", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ link_ntp_settings_clear(l); (void) link_dirty(l); return sd_bus_reply_method_return(message, NULL); } int bus_link_method_revert_dns(sd_bus_message *message, void *userdata, sd_bus_error *error) { Link *l = userdata; int r; assert(message); assert(l); r = verify_managed_link(l, error); if (r < 0) return r; r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.revert-dns", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ link_dns_settings_clear(l); (void) link_dirty(l); return sd_bus_reply_method_return(message, NULL); } int bus_link_method_renew(sd_bus_message *message, void *userdata, sd_bus_error *error) { Link *l = userdata; int r; assert(l); if (!l->network) return sd_bus_error_setf(error, BUS_ERROR_UNMANAGED_INTERFACE, "Interface %s is not managed by systemd-networkd", l->ifname); r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.renew", NULL, true, UID_INVALID, &l->manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ if (l->dhcp_client) { r = sd_dhcp_client_send_renew(l->dhcp_client); if (r < 0) return r; } return sd_bus_reply_method_return(message, NULL); } const sd_bus_vtable link_vtable[] = { SD_BUS_VTABLE_START(0), SD_BUS_PROPERTY("OperationalState", "s", property_get_operational_state, offsetof(Link, operstate), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("CarrierState", "s", property_get_carrier_state, offsetof(Link, carrier_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("AddressState", "s", property_get_address_state, offsetof(Link, address_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("AdministrativeState", "s", property_get_administrative_state, offsetof(Link, state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("BitRates", "(tt)", property_get_bit_rates, 0, 0), SD_BUS_METHOD("SetNTP", "as", NULL, bus_link_method_set_ntp_servers, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("SetDNS", "a(iay)", NULL, bus_link_method_set_dns_servers, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("SetDomains", "a(sb)", NULL, bus_link_method_set_domains, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("SetDefaultRoute", "b", NULL, bus_link_method_set_default_route, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("SetLLMNR", "s", NULL, bus_link_method_set_llmnr, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("SetMulticastDNS", "s", NULL, bus_link_method_set_mdns, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("SetDNSOverTLS", "s", NULL, bus_link_method_set_dns_over_tls, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("SetDNSSEC", "s", NULL, bus_link_method_set_dnssec, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("SetDNSSECNegativeTrustAnchors", "as", NULL, bus_link_method_set_dnssec_negative_trust_anchors, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("RevertNTP", NULL, NULL, bus_link_method_revert_ntp, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("RevertDNS", NULL, NULL, bus_link_method_revert_dns, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("Renew", NULL, NULL, bus_link_method_renew, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_VTABLE_END }; char *link_bus_path(Link *link) { _cleanup_free_ char *ifindex = NULL; char *p; int r; assert(link); assert(link->ifindex > 0); if (asprintf(&ifindex, "%d", link->ifindex) < 0) return NULL; r = sd_bus_path_encode("/org/freedesktop/network1/link", ifindex, &p); if (r < 0) return NULL; return p; } int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { _cleanup_strv_free_ char **l = NULL; Manager *m = userdata; unsigned c = 0; Link *link; Iterator i; assert(bus); assert(path); assert(m); assert(nodes); l = new0(char*, hashmap_size(m->links) + 1); if (!l) return -ENOMEM; HASHMAP_FOREACH(link, m->links, i) { char *p; p = link_bus_path(link); if (!p) return -ENOMEM; l[c++] = p; } l[c] = NULL; *nodes = TAKE_PTR(l); return 1; } int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { _cleanup_free_ char *identifier = NULL; Manager *m = userdata; Link *link; int ifindex, r; assert(bus); assert(path); assert(interface); assert(m); assert(found); r = sd_bus_path_decode(path, "/org/freedesktop/network1/link", &identifier); if (r <= 0) return 0; r = parse_ifindex(identifier, &ifindex); if (r < 0) return 0; r = link_get(m, ifindex, &link); if (r < 0) return 0; *found = link; return 1; } int link_send_changed_strv(Link *link, char **properties) { _cleanup_free_ char *p = NULL; assert(link); assert(link->manager); assert(properties); if (!link->manager->bus) return 0; p = link_bus_path(link); if (!p) return -ENOMEM; return sd_bus_emit_properties_changed_strv( link->manager->bus, p, "org.freedesktop.network1.Link", properties); } int link_send_changed(Link *link, const char *property, ...) { char **properties; properties = strv_from_stdarg_alloca(property); return link_send_changed_strv(link, properties); }