/* SPDX-License-Identifier: LGPL-2.1-or-later */ #include #include #include #include "alloc-util.h" #include "bus-common-errors.h" #include "bus-message-util.h" #include "bus-polkit.h" #include "networkd-dhcp-server-bus.h" #include "networkd-dhcp4-bus.h" #include "networkd-dhcp6-bus.h" #include "networkd-json.h" #include "networkd-link-bus.h" #include "networkd-link.h" #include "networkd-manager-bus.h" #include "networkd-manager.h" #include "networkd-network-bus.h" #include "path-util.h" #include "strv.h" #include "user-util.h" static int method_list_links(sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; Manager *manager = userdata; Link *link; int r; r = sd_bus_message_new_method_return(message, &reply); if (r < 0) return r; r = sd_bus_message_open_container(reply, 'a', "(iso)"); if (r < 0) return r; HASHMAP_FOREACH(link, manager->links_by_index) { _cleanup_free_ char *path = NULL; path = link_bus_path(link); if (!path) return -ENOMEM; r = sd_bus_message_append( reply, "(iso)", link->ifindex, link->ifname, empty_to_root(path)); if (r < 0) return r; } r = sd_bus_message_close_container(reply); if (r < 0) return r; return sd_bus_send(NULL, reply, NULL); } static int method_get_link_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; _cleanup_free_ char *path = NULL; Manager *manager = userdata; const char *name; Link *link; int r; r = sd_bus_message_read(message, "s", &name); if (r < 0) return r; if (link_get_by_name(manager, name, &link) < 0) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %s not known", name); r = sd_bus_message_new_method_return(message, &reply); if (r < 0) return r; path = link_bus_path(link); if (!path) return -ENOMEM; r = sd_bus_message_append(reply, "io", link->ifindex, empty_to_root(path)); if (r < 0) return r; return sd_bus_send(NULL, reply, NULL); } static int method_get_link_by_index(sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; _cleanup_free_ char *path = NULL; Manager *manager = userdata; int ifindex, r; Link *link; r = bus_message_read_ifindex(message, error, &ifindex); if (r < 0) return r; r = link_get_by_index(manager, ifindex, &link); if (r < 0) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %i not known", ifindex); r = sd_bus_message_new_method_return(message, &reply); if (r < 0) return r; path = link_bus_path(link); if (!path) return -ENOMEM; r = sd_bus_message_append(reply, "so", link->ifname, empty_to_root(path)); if (r < 0) return r; return sd_bus_send(NULL, reply, NULL); } static int call_link_method(Manager *m, sd_bus_message *message, sd_bus_message_handler_t handler, sd_bus_error *error) { int ifindex, r; Link *l; assert(m); assert(message); assert(handler); r = bus_message_read_ifindex(message, error, &ifindex); if (r < 0) return r; r = link_get_by_index(m, ifindex, &l); if (r < 0) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %i not known", ifindex); return handler(message, l, error); } static int bus_method_set_link_ntp_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_ntp_servers, error); } static int bus_method_set_link_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_dns_servers, error); } static int bus_method_set_link_dns_servers_ex(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_dns_servers_ex, error); } static int bus_method_set_link_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_domains, error); } static int bus_method_set_link_default_route(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_default_route, error); } static int bus_method_set_link_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_llmnr, error); } static int bus_method_set_link_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_mdns, error); } static int bus_method_set_link_dns_over_tls(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_dns_over_tls, error); } static int bus_method_set_link_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_dnssec, error); } static int bus_method_set_link_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_set_dnssec_negative_trust_anchors, error); } static int bus_method_revert_link_ntp(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_revert_ntp, error); } static int bus_method_revert_link_dns(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_revert_dns, error); } static int bus_method_renew_link(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_renew, error); } static int bus_method_force_renew_link(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_force_renew, error); } static int bus_method_reconfigure_link(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_reconfigure, error); } static int bus_method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *manager = userdata; int r; r = bus_verify_polkit_async(message, CAP_NET_ADMIN, "org.freedesktop.network1.reload", NULL, true, UID_INVALID, &manager->polkit_registry, error); if (r < 0) return r; if (r == 0) return 1; /* Polkit will call us back */ r = manager_reload(manager); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int bus_method_describe_link(sd_bus_message *message, void *userdata, sd_bus_error *error) { return call_link_method(userdata, message, bus_link_method_describe, error); } static int bus_method_describe(sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; _cleanup_free_ char *text = NULL; Manager *manager = ASSERT_PTR(userdata); int r; assert(message); r = manager_build_json(manager, &v); if (r < 0) return log_error_errno(r, "Failed to build JSON data: %m"); r = json_variant_format(v, 0, &text); if (r < 0) return log_error_errno(r, "Failed to format JSON data: %m"); r = sd_bus_message_new_method_return(message, &reply); if (r < 0) return r; r = sd_bus_message_append(reply, "s", text); if (r < 0) return r; return sd_bus_send(NULL, reply, NULL); } static int property_get_namespace_id( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { uint64_t id = 0; struct stat st; assert(bus); assert(reply); /* Returns our own network namespace ID, i.e. the inode number of /proc/self/ns/net. This allows * unprivileged clients to determine whether they are in the same network namespace as us (note that * access to that path is restricted, thus they can't check directly unless privileged). */ if (stat("/proc/self/ns/net", &st) < 0) { log_warning_errno(errno, "Failed to stat network namespace, ignoring: %m"); id = 0; } else id = st.st_ino; return sd_bus_message_append(reply, "t", id); } static const sd_bus_vtable manager_vtable[] = { SD_BUS_VTABLE_START(0), SD_BUS_PROPERTY("OperationalState", "s", property_get_operational_state, offsetof(Manager, operational_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("CarrierState", "s", property_get_carrier_state, offsetof(Manager, carrier_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("AddressState", "s", property_get_address_state, offsetof(Manager, address_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("IPv4AddressState", "s", property_get_address_state, offsetof(Manager, ipv4_address_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("IPv6AddressState", "s", property_get_address_state, offsetof(Manager, ipv6_address_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("OnlineState", "s", property_get_online_state, offsetof(Manager, online_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("NamespaceId", "t", property_get_namespace_id, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_METHOD_WITH_ARGS("ListLinks", SD_BUS_NO_ARGS, SD_BUS_RESULT("a(iso)", links), method_list_links, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("GetLinkByName", SD_BUS_ARGS("s", name), SD_BUS_RESULT("i", ifindex, "o", path), method_get_link_by_name, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("GetLinkByIndex", SD_BUS_ARGS("i", ifindex), SD_BUS_RESULT("s", name, "o", path), method_get_link_by_index, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkNTP", SD_BUS_ARGS("i", ifindex, "as", servers), SD_BUS_NO_RESULT, bus_method_set_link_ntp_servers, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkDNS", SD_BUS_ARGS("i", ifindex, "a(iay)", addresses), SD_BUS_NO_RESULT, bus_method_set_link_dns_servers, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkDNSEx", SD_BUS_ARGS("i", ifindex, "a(iayqs)", addresses), SD_BUS_NO_RESULT, bus_method_set_link_dns_servers_ex, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkDomains", SD_BUS_ARGS("i", ifindex, "a(sb)", domains), SD_BUS_NO_RESULT, bus_method_set_link_domains, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkDefaultRoute", SD_BUS_ARGS("i", ifindex, "b", enable), SD_BUS_NO_RESULT, bus_method_set_link_default_route, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkLLMNR", SD_BUS_ARGS("i", ifindex, "s", mode), SD_BUS_NO_RESULT, bus_method_set_link_llmnr, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkMulticastDNS", SD_BUS_ARGS("i", ifindex, "s", mode), SD_BUS_NO_RESULT, bus_method_set_link_mdns, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkDNSOverTLS", SD_BUS_ARGS("i", ifindex, "s", mode), SD_BUS_NO_RESULT, bus_method_set_link_dns_over_tls, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkDNSSEC", SD_BUS_ARGS("i", ifindex, "s", mode), SD_BUS_NO_RESULT, bus_method_set_link_dnssec, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("SetLinkDNSSECNegativeTrustAnchors", SD_BUS_ARGS("i", ifindex, "as", names), SD_BUS_NO_RESULT, bus_method_set_link_dnssec_negative_trust_anchors, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("RevertLinkNTP", SD_BUS_ARGS("i", ifindex), SD_BUS_NO_RESULT, bus_method_revert_link_ntp, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("RevertLinkDNS", SD_BUS_ARGS("i", ifindex), SD_BUS_NO_RESULT, bus_method_revert_link_dns, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("RenewLink", SD_BUS_ARGS("i", ifindex), SD_BUS_NO_RESULT, bus_method_renew_link, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("ForceRenewLink", SD_BUS_ARGS("i", ifindex), SD_BUS_NO_RESULT, bus_method_force_renew_link, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("ReconfigureLink", SD_BUS_ARGS("i", ifindex), SD_BUS_NO_RESULT, bus_method_reconfigure_link, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("Reload", SD_BUS_NO_ARGS, SD_BUS_NO_RESULT, bus_method_reload, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("DescribeLink", SD_BUS_ARGS("i", ifindex), SD_BUS_RESULT("s", json), bus_method_describe_link, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD_WITH_ARGS("Describe", SD_BUS_NO_ARGS, SD_BUS_RESULT("s", json), bus_method_describe, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_VTABLE_END }; int manager_send_changed_strv(Manager *manager, char **properties) { assert(manager); assert(properties); if (sd_bus_is_ready(manager->bus) <= 0) return 0; return sd_bus_emit_properties_changed_strv( manager->bus, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", properties); } const BusObjectImplementation manager_object = { "/org/freedesktop/network1", "org.freedesktop.network1.Manager", .vtables = BUS_VTABLES(manager_vtable), .children = BUS_IMPLEMENTATIONS( &link_object, /* This is the main implementation for /org/freedesktop/network1/link, * and must be earlier than the dhcp objects below. */ &dhcp_server_object, &dhcp_client_object, &dhcp6_client_object, &network_object), };