src/network/networkd-manager-bus.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   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-message-util.h"
  10 #include "bus-polkit.h"
  11 #include "networkd-link-bus.h"
  12 #include "networkd-link.h"
  13 #include "networkd-manager-bus.h"
  14 #include "networkd-manager.h"
  15 #include "path-util.h"
  16 #include "socket-netlink.h"
  17 #include "strv.h"
  18 #include "user-util.h"
  19
  20 static int method_list_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
  21         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  22         Manager *manager = userdata;
  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) {
  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         int ifindex, r;
  97         Link *link;
  98
  99         r = bus_message_read_ifindex(message, error, &ifindex);
 100         if (r < 0)
 101                 return r;
 102
 103         link = hashmap_get(manager->links, INT_TO_PTR(ifindex));
 104         if (!link)
 105                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %i not known", ifindex);
 106
 107         r = sd_bus_message_new_method_return(message, &reply);
 108         if (r < 0)
 109                 return r;
 110
 111         path = link_bus_path(link);
 112         if (!path)
 113                 return -ENOMEM;
 114
 115         r = sd_bus_message_append(reply, "so", link->ifname, empty_to_root(path));
 116         if (r < 0)
 117                 return r;
 118
 119         return sd_bus_send(NULL, reply, NULL);
 120 }
 121
 122 static int call_link_method(Manager *m, sd_bus_message *message, sd_bus_message_handler_t handler, sd_bus_error *error) {
 123         int ifindex, r;
 124         Link *l;
 125
 126         assert(m);
 127         assert(message);
 128         assert(handler);
 129
 130         r = bus_message_read_ifindex(message, error, &ifindex);
 131         if (r < 0)
 132                 return r;
 133
 134         l = hashmap_get(m->links, INT_TO_PTR(ifindex));
 135         if (!l)
 136                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %i not known", ifindex);
 137
 138         return handler(message, l, error);
 139 }
 140
 141 static int bus_method_set_link_ntp_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 142         return call_link_method(userdata, message, bus_link_method_set_ntp_servers, error);
 143 }
 144
 145 static int bus_method_set_link_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 146         return call_link_method(userdata, message, bus_link_method_set_dns_servers, error);
 147 }
 148
 149 static int bus_method_set_link_dns_servers_ex(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 150         return call_link_method(userdata, message, bus_link_method_set_dns_servers_ex, error);
 151 }
 152
 153 static int bus_method_set_link_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 154         return call_link_method(userdata, message, bus_link_method_set_domains, error);
 155 }
 156
 157 static int bus_method_set_link_default_route(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 158         return call_link_method(userdata, message, bus_link_method_set_default_route, error);
 159 }
 160
 161 static int bus_method_set_link_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 162         return call_link_method(userdata, message, bus_link_method_set_llmnr, error);
 163 }
 164
 165 static int bus_method_set_link_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 166         return call_link_method(userdata, message, bus_link_method_set_mdns, error);
 167 }
 168
 169 static int bus_method_set_link_dns_over_tls(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 170         return call_link_method(userdata, message, bus_link_method_set_dns_over_tls, error);
 171 }
 172
 173 static int bus_method_set_link_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 174         return call_link_method(userdata, message, bus_link_method_set_dnssec, error);
 175 }
 176
 177 static int bus_method_set_link_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 178         return call_link_method(userdata, message, bus_link_method_set_dnssec_negative_trust_anchors, error);
 179 }
 180
 181 static int bus_method_revert_link_ntp(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 182         return call_link_method(userdata, message, bus_link_method_revert_ntp, error);
 183 }
 184
 185 static int bus_method_revert_link_dns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 186         return call_link_method(userdata, message, bus_link_method_revert_dns, error);
 187 }
 188
 189 static int bus_method_renew_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 190         return call_link_method(userdata, message, bus_link_method_renew, error);
 191 }
 192
 193 static int bus_method_force_renew_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 194         return call_link_method(userdata, message, bus_link_method_force_renew, error);
 195 }
 196
 197 static int bus_method_reconfigure_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 198         return call_link_method(userdata, message, bus_link_method_reconfigure, error);
 199 }
 200
 201 static int bus_method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 202         Manager *manager = userdata;
 203         Link *link;
 204         int r;
 205
 206         r = bus_verify_polkit_async(message, CAP_NET_ADMIN,
 207                                     "org.freedesktop.network1.reload",
 208                                     NULL, true, UID_INVALID,
 209                                     &manager->polkit_registry, error);
 210         if (r < 0)
 211                 return r;
 212         if (r == 0)
 213                 return 1; /* Polkit will call us back */
 214
 215         r = netdev_load(manager, true);
 216         if (r < 0)
 217                 return r;
 218
 219         r = network_reload(manager);
 220         if (r < 0)
 221                 return r;
 222
 223         HASHMAP_FOREACH(link, manager->links) {
 224                 r = link_reconfigure(link, false);
 225                 if (r < 0)
 226                         return r;
 227         }
 228
 229         return sd_bus_reply_method_return(message, NULL);
 230 }
 231
 232 const sd_bus_vtable manager_vtable[] = {
 233         SD_BUS_VTABLE_START(0),
 234
 235         SD_BUS_PROPERTY("OperationalState", "s", property_get_operational_state, offsetof(Manager, operational_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 236         SD_BUS_PROPERTY("CarrierState", "s", property_get_carrier_state, offsetof(Manager, carrier_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 237         SD_BUS_PROPERTY("AddressState", "s", property_get_address_state, offsetof(Manager, address_state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 238
 239         SD_BUS_METHOD("ListLinks", NULL, "a(iso)", method_list_links, SD_BUS_VTABLE_UNPRIVILEGED),
 240         SD_BUS_METHOD("GetLinkByName", "s", "io", method_get_link_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
 241         SD_BUS_METHOD("GetLinkByIndex", "i", "so", method_get_link_by_index, SD_BUS_VTABLE_UNPRIVILEGED),
 242         SD_BUS_METHOD("SetLinkNTP", "ias", NULL, bus_method_set_link_ntp_servers, SD_BUS_VTABLE_UNPRIVILEGED),
 243         SD_BUS_METHOD("SetLinkDNS", "ia(iay)", NULL, bus_method_set_link_dns_servers, SD_BUS_VTABLE_UNPRIVILEGED),
 244         SD_BUS_METHOD("SetLinkDNSEx", "ia(iayqs)", NULL, bus_method_set_link_dns_servers_ex, SD_BUS_VTABLE_UNPRIVILEGED),
 245         SD_BUS_METHOD("SetLinkDomains", "ia(sb)", NULL, bus_method_set_link_domains, SD_BUS_VTABLE_UNPRIVILEGED),
 246         SD_BUS_METHOD("SetLinkDefaultRoute", "ib", NULL, bus_method_set_link_default_route, SD_BUS_VTABLE_UNPRIVILEGED),
 247         SD_BUS_METHOD("SetLinkLLMNR", "is", NULL, bus_method_set_link_llmnr, SD_BUS_VTABLE_UNPRIVILEGED),
 248         SD_BUS_METHOD("SetLinkMulticastDNS", "is", NULL, bus_method_set_link_mdns, SD_BUS_VTABLE_UNPRIVILEGED),
 249         SD_BUS_METHOD("SetLinkDNSOverTLS", "is", NULL, bus_method_set_link_dns_over_tls, SD_BUS_VTABLE_UNPRIVILEGED),
 250         SD_BUS_METHOD("SetLinkDNSSEC", "is", NULL, bus_method_set_link_dnssec, SD_BUS_VTABLE_UNPRIVILEGED),
 251         SD_BUS_METHOD("SetLinkDNSSECNegativeTrustAnchors", "ias", NULL, bus_method_set_link_dnssec_negative_trust_anchors, SD_BUS_VTABLE_UNPRIVILEGED),
 252         SD_BUS_METHOD("RevertLinkNTP", "i", NULL, bus_method_revert_link_ntp, SD_BUS_VTABLE_UNPRIVILEGED),
 253         SD_BUS_METHOD("RevertLinkDNS", "i", NULL, bus_method_revert_link_dns, SD_BUS_VTABLE_UNPRIVILEGED),
 254         SD_BUS_METHOD("RenewLink", "i", NULL, bus_method_renew_link, SD_BUS_VTABLE_UNPRIVILEGED),
 255         SD_BUS_METHOD("ForceRenewLink", "i", NULL, bus_method_force_renew_link, SD_BUS_VTABLE_UNPRIVILEGED),
 256         SD_BUS_METHOD("ReconfigureLink", "i", NULL, bus_method_reconfigure_link, SD_BUS_VTABLE_UNPRIVILEGED),
 257         SD_BUS_METHOD("Reload", NULL, NULL, bus_method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
 258
 259         SD_BUS_VTABLE_END
 260 };
 261
 262 int manager_send_changed_strv(Manager *manager, char **properties) {
 263         assert(manager);
 264         assert(properties);
 265
 266         if (!manager->bus)
 267                 return 0;
 268
 269         return sd_bus_emit_properties_changed_strv(
 270                         manager->bus,
 271                         "/org/freedesktop/network1",
 272                         "org.freedesktop.network1.Manager",
 273                         properties);
 274 }