diff options
Diffstat (limited to 'src/network/networkd-manager-bus.c')
| -rw-r--r-- | src/network/networkd-manager-bus.c | 425 |
1 files changed, 425 insertions, 0 deletions
diff --git a/src/network/networkd-manager-bus.c b/src/network/networkd-manager-bus.c new file mode 100644 index 0000000..aecbc1d --- /dev/null +++ b/src/network/networkd-manager-bus.c @@ -0,0 +1,425 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <net/if.h> +#include <netinet/in.h> +#include <sys/capability.h> + +#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), +}; |