src/network/networkd-manager-bus.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <net/if.h>
   4 #include <netinet/in.h>
   5 #include <sys/capability.h>
   6
   7 #include "alloc-util.h"
   8 #include "bus-common-errors.h"
   9 #include "bus-polkit.h"
  10 #include "networkd-link-bus.h"
  11 #include "networkd-link.h"
  12 #include "networkd-manager-bus.h"
  13 #include "networkd-manager.h"
  14 #include "path-util.h"
  15 #include "socket-netlink.h"
  16 #include "strv.h"
  17 #include "user-util.h"
  18
  19 static int method_list_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
  20         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  21         Manager *manager = userdata;
  22         Iterator i;
  23         Link *link;
  24         int r;
  25
  26         r = sd_bus_message_new_method_return(message, &reply);
  27         if (r < 0)
  28                 return r;
  29
  30         r = sd_bus_message_open_container(reply, 'a', "(iso)");
  31         if (r < 0)
  32                 return r;
  33
  34         HASHMAP_FOREACH(link, manager->links, i) {
  35                 _cleanup_free_ char *path = NULL;
  36
  37                 path = link_bus_path(link);
  38                 if (!path)
  39                         return -ENOMEM;
  40
  41                 r = sd_bus_message_append(
  42                         reply, "(iso)",
  43                         link->ifindex,
  44                         link->ifname,
  45                         empty_to_root(path));
  46                 if (r < 0)
  47                         return r;
  48         }
  49
  50         r = sd_bus_message_close_container(reply);
  51         if (r < 0)
  52                 return r;
  53
  54         return sd_bus_send(NULL, reply, NULL);
  55 }
  56
  57 static int method_get_link_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
  58         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  59         _cleanup_free_ char *path = NULL;
  60         Manager *manager = userdata;
  61         const char *name;
  62         int index, r;
  63         Link *link;
  64
  65         r = sd_bus_message_read(message, "s", &name);
  66         if (r < 0)
  67                 return r;
  68
  69         index = resolve_ifname(&manager->rtnl, name);
  70         if (index < 0)
  71                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %s cannot be resolved", name);
  72
  73         link = hashmap_get(manager->links, INT_TO_PTR(index));
  74         if (!link)
  75                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %s not known", name);
  76
  77         r = sd_bus_message_new_method_return(message, &reply);
  78         if (r < 0)
  79                 return r;
  80
  81         path = link_bus_path(link);
  82         if (!path)
  83                 return -ENOMEM;
  84
  85         r = sd_bus_message_append(reply, "io", link->ifindex, empty_to_root(path));
  86         if (r < 0)
  87                 return r;
  88
  89         return sd_bus_send(NULL, reply, NULL);
  90 }
  91
  92 static int method_get_link_by_index(sd_bus_message *message, void *userdata, sd_bus_error *error) {
  93         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  94         _cleanup_free_ char *path = NULL;
  95         Manager *manager = userdata;
  96         int32_t index;
  97         Link *link;
  98         int r;
  99
 100         r = sd_bus_message_read(message, "i", &index);
 101         if (r < 0)
 102                 return r;
 103
 104         link = hashmap_get(manager->links, INT_TO_PTR((int) index));
 105         if (!link)
 106                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %" PRIi32 " not known", index);
 107
 108         r = sd_bus_message_new_method_return(message, &reply);
 109         if (r < 0)
 110                 return r;
 111
 112         path = link_bus_path(link);
 113         if (!path)
 114                 return -ENOMEM;
 115
 116         r = sd_bus_message_append(reply, "so", link->ifname, empty_to_root(path));
 117         if (r < 0)
 118                 return r;
 119
 120         return sd_bus_send(NULL, reply, NULL);
 121 }
 122
 123 static int call_link_method(Manager *m, sd_bus_message *message, sd_bus_message_handler_t handler, sd_bus_error *error) {
 124         int ifindex, r;
 125         Link *l;
 126
 127         assert(m);
 128         assert(message);
 129         assert(handler);
 130
 131         assert_cc(sizeof(int) == sizeof(int32_t));
 132         r = sd_bus_message_read(message, "i", &ifindex);
 133         if (r < 0)
 134                 return r;
 135
 136         if (ifindex <= 0)
 137                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index");
 138
 139         l = hashmap_get(m->links, INT_TO_PTR(ifindex));
 140         if (!l)
 141                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %i not known", ifindex);
 142
 143         return handler(message, l, error);
 144 }
 145
 146 static int bus_method_set_link_ntp_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 147         return call_link_method(userdata, message, bus_link_method_set_ntp_servers, error);
 148 }
 149
 150 static int bus_method_set_link_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 151         return call_link_method(userdata, message, bus_link_method_set_dns_servers, error);
 152 }
 153
 154 static int bus_method_set_link_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 155         return call_link_method(userdata, message, bus_link_method_set_domains, error);
 156 }
 157
 158 static int bus_method_set_link_default_route(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 159         return call_link_method(userdata, message, bus_link_method_set_default_route, error);
 160 }
 161
 162 static int bus_method_set_link_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 163         return call_link_method(userdata, message, bus_link_method_set_llmnr, error);
 164 }
 165
 166 static int bus_method_set_link_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 167         return call_link_method(userdata, message, bus_link_method_set_mdns, error);
 168 }
 169
 170 static int bus_method_set_link_dns_over_tls(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 171         return call_link_method(userdata, message, bus_link_method_set_dns_over_tls, error);
 172 }
 173
 174 static int bus_method_set_link_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 175         return call_link_method(userdata, message, bus_link_method_set_dnssec, error);
 176 }
 177
 178 static int bus_method_set_link_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 179         return call_link_method(userdata, message, bus_link_method_set_dnssec_negative_trust_anchors, error);
 180 }
 181
 182 static int bus_method_revert_link_ntp(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 183         return call_link_method(userdata, message, bus_link_method_revert_ntp, error);
 184 }
 185
 186 static int bus_method_revert_link_dns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 187         return call_link_method(userdata, message, bus_link_method_revert_dns, error);
 188 }
 189
 190 static int bus_method_renew_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 191         return call_link_method(userdata, message, bus_link_method_renew, error);
 192 }
 193
 194 static int bus_method_force_renew_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 195         return call_link_method(userdata, message, bus_link_method_force_renew, error);
 196 }
 197
 198 static int bus_method_reconfigure_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 199         return call_link_method(userdata, message, bus_link_method_reconfigure, error);
 200 }
 201
 202 static int bus_method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 203         Manager *manager = userdata;
 204         Iterator i;
 205         Link *link;
 206         int r;
 207
 208         r = bus_verify_polkit_async(message, CAP_NET_ADMIN,
 209                                     "org.freedesktop.network1.reload",
 210                                     NULL, true, UID_INVALID,
 211                                     &manager->polkit_registry, error);
 212         if (r < 0)
 213                 return r;
 214         if (r == 0)
 215                 return 1; /* Polkit will call us back */
 216
 217         r = netdev_load(manager, true);
 218         if (r < 0)
 219                 return r;
 220
 221         r = network_reload(manager);
 222         if (r < 0)
 223                 return r;
 224
 225         HASHMAP_FOREACH(link, manager->links, i) {
 226                 r = link_reconfigure(link, false);
 227                 if (r < 0)
 228                         return r;
 229         }
 230
 231         return sd_bus_reply_method_return(message, NULL);
 232 }
 233
 234 const sd_bus_vtable manager_vtable[] = {
 235         SD_BUS_VTABLE_START(0),
 236
 237         SD_BUS_PROPERTY("OperationalState", "s", property_get_operational_state, offsetof(Manager, operational_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 238         SD_BUS_PROPERTY("CarrierState", "s", property_get_carrier_state, offsetof(Manager, carrier_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 239         SD_BUS_PROPERTY("AddressState", "s", property_get_address_state, offsetof(Manager, address_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 240
 241         SD_BUS_METHOD("ListLinks", NULL, "a(iso)", method_list_links, SD_BUS_VTABLE_UNPRIVILEGED),
 242         SD_BUS_METHOD("GetLinkByName", "s", "io", method_get_link_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
 243         SD_BUS_METHOD("GetLinkByIndex", "i", "so", method_get_link_by_index, SD_BUS_VTABLE_UNPRIVILEGED),
 244         SD_BUS_METHOD("SetLinkNTP", "ias", NULL, bus_method_set_link_ntp_servers, SD_BUS_VTABLE_UNPRIVILEGED),
 245         SD_BUS_METHOD("SetLinkDNS", "ia(iay)", NULL, bus_method_set_link_dns_servers, SD_BUS_VTABLE_UNPRIVILEGED),
 246         SD_BUS_METHOD("SetLinkDomains", "ia(sb)", NULL, bus_method_set_link_domains, SD_BUS_VTABLE_UNPRIVILEGED),
 247         SD_BUS_METHOD("SetLinkDefaultRoute", "ib", NULL, bus_method_set_link_default_route, SD_BUS_VTABLE_UNPRIVILEGED),
 248         SD_BUS_METHOD("SetLinkLLMNR", "is", NULL, bus_method_set_link_llmnr, SD_BUS_VTABLE_UNPRIVILEGED),
 249         SD_BUS_METHOD("SetLinkMulticastDNS", "is", NULL, bus_method_set_link_mdns, SD_BUS_VTABLE_UNPRIVILEGED),
 250         SD_BUS_METHOD("SetLinkDNSOverTLS", "is", NULL, bus_method_set_link_dns_over_tls, SD_BUS_VTABLE_UNPRIVILEGED),
 251         SD_BUS_METHOD("SetLinkDNSSEC", "is", NULL, bus_method_set_link_dnssec, SD_BUS_VTABLE_UNPRIVILEGED),
 252         SD_BUS_METHOD("SetLinkDNSSECNegativeTrustAnchors", "ias", NULL, bus_method_set_link_dnssec_negative_trust_anchors, SD_BUS_VTABLE_UNPRIVILEGED),
 253         SD_BUS_METHOD("RevertLinkNTP", "i", NULL, bus_method_revert_link_ntp, SD_BUS_VTABLE_UNPRIVILEGED),
 254         SD_BUS_METHOD("RevertLinkDNS", "i", NULL, bus_method_revert_link_dns, SD_BUS_VTABLE_UNPRIVILEGED),
 255         SD_BUS_METHOD("RenewLink", "i", NULL, bus_method_renew_link, SD_BUS_VTABLE_UNPRIVILEGED),
 256         SD_BUS_METHOD("ForceRenewLink", "i", NULL, bus_method_force_renew_link, SD_BUS_VTABLE_UNPRIVILEGED),
 257         SD_BUS_METHOD("ReconfigureLink", "i", NULL, bus_method_reconfigure_link, SD_BUS_VTABLE_UNPRIVILEGED),
 258         SD_BUS_METHOD("Reload", NULL, NULL, bus_method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
 259
 260         SD_BUS_VTABLE_END
 261 };
 262
 263 int manager_send_changed_strv(Manager *manager, char **properties) {
 264         assert(manager);
 265         assert(properties);
 266
 267         if (!manager->bus)
 268                 return 0;
 269
 270         return sd_bus_emit_properties_changed_strv(
 271                         manager->bus,
 272                         "/org/freedesktop/network1",
 273                         "org.freedesktop.network1.Manager",
 274                         properties);
 275 }