src/core/dbus-socket.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include "alloc-util.h"
   4 #include "bus-get-properties.h"
   5 #include "dbus-cgroup.h"
   6 #include "dbus-execute.h"
   7 #include "dbus-kill.h"
   8 #include "dbus-socket.h"
   9 #include "dbus-util.h"
  10 #include "fd-util.h"
  11 #include "ip-protocol-list.h"
  12 #include "parse-util.h"
  13 #include "path-util.h"
  14 #include "socket.h"
  15 #include "socket-netlink.h"
  16 #include "socket-util.h"
  17 #include "string-util.h"
  18 #include "unit.h"
  19
  20 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, socket_result, SocketResult);
  21 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_bind_ipv6_only, socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
  22 static BUS_DEFINE_PROPERTY_GET(property_get_fdname, "s", Socket, socket_fdname);
  23 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_timestamping, socket_timestamping, SocketTimestamping);
  24
  25 static int property_get_listen(
  26                 sd_bus *bus,
  27                 const char *path,
  28                 const char *interface,
  29                 const char *property,
  30                 sd_bus_message *reply,
  31                 void *userdata,
  32                 sd_bus_error *error) {
  33
  34         Socket *s = SOCKET(userdata);
  35         int r;
  36
  37         assert(bus);
  38         assert(reply);
  39         assert(s);
  40
  41         r = sd_bus_message_open_container(reply, 'a', "(ss)");
  42         if (r < 0)
  43                 return r;
  44
  45         LIST_FOREACH(port, p, s->ports) {
  46                 _cleanup_free_ char *address = NULL;
  47
  48                 r = socket_port_to_address(p, &address);
  49                 if (r < 0)
  50                         return r;
  51
  52                 r = sd_bus_message_append(reply, "(ss)", socket_port_type_to_string(p), address);
  53                 if (r < 0)
  54                         return r;
  55         }
  56
  57         return sd_bus_message_close_container(reply);
  58 }
  59
  60 const sd_bus_vtable bus_socket_vtable[] = {
  61         SD_BUS_VTABLE_START(0),
  62         SD_BUS_PROPERTY("BindIPv6Only", "s", property_get_bind_ipv6_only, offsetof(Socket, bind_ipv6_only), SD_BUS_VTABLE_PROPERTY_CONST),
  63         SD_BUS_PROPERTY("Backlog", "u", bus_property_get_unsigned, offsetof(Socket, backlog), SD_BUS_VTABLE_PROPERTY_CONST),
  64         SD_BUS_PROPERTY("TimeoutUSec", "t", bus_property_get_usec, offsetof(Socket, timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
  65         SD_BUS_PROPERTY("BindToDevice", "s", NULL, offsetof(Socket, bind_to_device), SD_BUS_VTABLE_PROPERTY_CONST),
  66         SD_BUS_PROPERTY("SocketUser", "s", NULL, offsetof(Socket, user), SD_BUS_VTABLE_PROPERTY_CONST),
  67         SD_BUS_PROPERTY("SocketGroup", "s", NULL, offsetof(Socket, group), SD_BUS_VTABLE_PROPERTY_CONST),
  68         SD_BUS_PROPERTY("SocketMode", "u", bus_property_get_mode, offsetof(Socket, socket_mode), SD_BUS_VTABLE_PROPERTY_CONST),
  69         SD_BUS_PROPERTY("DirectoryMode", "u", bus_property_get_mode, offsetof(Socket, directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
  70         SD_BUS_PROPERTY("Accept", "b", bus_property_get_bool, offsetof(Socket, accept), SD_BUS_VTABLE_PROPERTY_CONST),
  71         SD_BUS_PROPERTY("FlushPending", "b", bus_property_get_bool, offsetof(Socket, flush_pending), SD_BUS_VTABLE_PROPERTY_CONST),
  72         SD_BUS_PROPERTY("Writable", "b", bus_property_get_bool, offsetof(Socket, writable), SD_BUS_VTABLE_PROPERTY_CONST),
  73         SD_BUS_PROPERTY("KeepAlive", "b", bus_property_get_bool, offsetof(Socket, keep_alive), SD_BUS_VTABLE_PROPERTY_CONST),
  74         SD_BUS_PROPERTY("KeepAliveTimeUSec", "t", bus_property_get_usec, offsetof(Socket, keep_alive_time), SD_BUS_VTABLE_PROPERTY_CONST),
  75         SD_BUS_PROPERTY("KeepAliveIntervalUSec", "t", bus_property_get_usec, offsetof(Socket, keep_alive_interval), SD_BUS_VTABLE_PROPERTY_CONST),
  76         SD_BUS_PROPERTY("KeepAliveProbes", "u", bus_property_get_unsigned, offsetof(Socket, keep_alive_cnt), SD_BUS_VTABLE_PROPERTY_CONST),
  77         SD_BUS_PROPERTY("DeferAcceptUSec" , "t", bus_property_get_usec, offsetof(Socket, defer_accept), SD_BUS_VTABLE_PROPERTY_CONST),
  78         SD_BUS_PROPERTY("NoDelay", "b", bus_property_get_bool, offsetof(Socket, no_delay), SD_BUS_VTABLE_PROPERTY_CONST),
  79         SD_BUS_PROPERTY("Priority", "i", bus_property_get_int, offsetof(Socket, priority), SD_BUS_VTABLE_PROPERTY_CONST),
  80         SD_BUS_PROPERTY("ReceiveBuffer", "t", bus_property_get_size, offsetof(Socket, receive_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
  81         SD_BUS_PROPERTY("SendBuffer", "t", bus_property_get_size, offsetof(Socket, send_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
  82         SD_BUS_PROPERTY("IPTOS", "i", bus_property_get_int, offsetof(Socket, ip_tos), SD_BUS_VTABLE_PROPERTY_CONST),
  83         SD_BUS_PROPERTY("IPTTL", "i", bus_property_get_int, offsetof(Socket, ip_ttl), SD_BUS_VTABLE_PROPERTY_CONST),
  84         SD_BUS_PROPERTY("PipeSize", "t", bus_property_get_size, offsetof(Socket, pipe_size), SD_BUS_VTABLE_PROPERTY_CONST),
  85         SD_BUS_PROPERTY("FreeBind", "b", bus_property_get_bool, offsetof(Socket, free_bind), SD_BUS_VTABLE_PROPERTY_CONST),
  86         SD_BUS_PROPERTY("Transparent", "b", bus_property_get_bool, offsetof(Socket, transparent), SD_BUS_VTABLE_PROPERTY_CONST),
  87         SD_BUS_PROPERTY("Broadcast", "b", bus_property_get_bool, offsetof(Socket, broadcast), SD_BUS_VTABLE_PROPERTY_CONST),
  88         SD_BUS_PROPERTY("PassCredentials", "b", bus_property_get_bool, offsetof(Socket, pass_cred), SD_BUS_VTABLE_PROPERTY_CONST),
  89         SD_BUS_PROPERTY("PassFileDescriptorsToExec", "b", bus_property_get_bool, offsetof(Socket, pass_fds_to_exec), SD_BUS_VTABLE_PROPERTY_CONST),
  90         SD_BUS_PROPERTY("PassSecurity", "b", bus_property_get_bool, offsetof(Socket, pass_sec), SD_BUS_VTABLE_PROPERTY_CONST),
  91         SD_BUS_PROPERTY("PassPacketInfo", "b", bus_property_get_bool, offsetof(Socket, pass_pktinfo), SD_BUS_VTABLE_PROPERTY_CONST),
  92         SD_BUS_PROPERTY("Timestamping", "s", property_get_timestamping, offsetof(Socket, timestamping), SD_BUS_VTABLE_PROPERTY_CONST),
  93         SD_BUS_PROPERTY("RemoveOnStop", "b", bus_property_get_bool, offsetof(Socket, remove_on_stop), SD_BUS_VTABLE_PROPERTY_CONST),
  94         SD_BUS_PROPERTY("Listen", "a(ss)", property_get_listen, 0, SD_BUS_VTABLE_PROPERTY_CONST),
  95         SD_BUS_PROPERTY("Symlinks", "as", NULL, offsetof(Socket, symlinks), SD_BUS_VTABLE_PROPERTY_CONST),
  96         SD_BUS_PROPERTY("Mark", "i", bus_property_get_int, offsetof(Socket, mark), SD_BUS_VTABLE_PROPERTY_CONST),
  97         SD_BUS_PROPERTY("MaxConnections", "u", bus_property_get_unsigned, offsetof(Socket, max_connections), SD_BUS_VTABLE_PROPERTY_CONST),
  98         SD_BUS_PROPERTY("MaxConnectionsPerSource", "u", bus_property_get_unsigned, offsetof(Socket, max_connections_per_source), SD_BUS_VTABLE_PROPERTY_CONST),
  99         SD_BUS_PROPERTY("MessageQueueMaxMessages", "x", bus_property_get_long, offsetof(Socket, mq_maxmsg), SD_BUS_VTABLE_PROPERTY_CONST),
 100         SD_BUS_PROPERTY("MessageQueueMessageSize", "x", bus_property_get_long, offsetof(Socket, mq_msgsize), SD_BUS_VTABLE_PROPERTY_CONST),
 101         SD_BUS_PROPERTY("TCPCongestion", "s", NULL, offsetof(Socket, tcp_congestion), SD_BUS_VTABLE_PROPERTY_CONST),
 102         SD_BUS_PROPERTY("ReusePort", "b",  bus_property_get_bool, offsetof(Socket, reuse_port), SD_BUS_VTABLE_PROPERTY_CONST),
 103         SD_BUS_PROPERTY("SmackLabel", "s", NULL, offsetof(Socket, smack), SD_BUS_VTABLE_PROPERTY_CONST),
 104         SD_BUS_PROPERTY("SmackLabelIPIn", "s", NULL, offsetof(Socket, smack_ip_in), SD_BUS_VTABLE_PROPERTY_CONST),
 105         SD_BUS_PROPERTY("SmackLabelIPOut", "s", NULL, offsetof(Socket, smack_ip_out), SD_BUS_VTABLE_PROPERTY_CONST),
 106         SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Socket, control_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 107         SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Socket, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 108         SD_BUS_PROPERTY("NConnections", "u", bus_property_get_unsigned, offsetof(Socket, n_connections), 0),
 109         SD_BUS_PROPERTY("NAccepted", "u", bus_property_get_unsigned, offsetof(Socket, n_accepted), 0),
 110         SD_BUS_PROPERTY("NRefused", "u", bus_property_get_unsigned, offsetof(Socket, n_refused), 0),
 111         SD_BUS_PROPERTY("FileDescriptorName", "s", property_get_fdname, 0, 0),
 112         SD_BUS_PROPERTY("SocketProtocol", "i", bus_property_get_int, offsetof(Socket, socket_protocol), SD_BUS_VTABLE_PROPERTY_CONST),
 113         SD_BUS_PROPERTY("TriggerLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Socket, trigger_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
 114         SD_BUS_PROPERTY("TriggerLimitBurst", "u", bus_property_get_unsigned, offsetof(Socket, trigger_limit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
 115         SD_BUS_PROPERTY("PollLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Socket, poll_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
 116         SD_BUS_PROPERTY("PollLimitBurst", "u", bus_property_get_unsigned, offsetof(Socket, poll_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
 117         SD_BUS_PROPERTY("UID", "u", bus_property_get_uid, offsetof(Unit, ref_uid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 118         SD_BUS_PROPERTY("GID", "u", bus_property_get_gid, offsetof(Unit, ref_gid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 119         BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPre", offsetof(Socket, exec_command[SOCKET_EXEC_START_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
 120         BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPost", offsetof(Socket, exec_command[SOCKET_EXEC_START_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
 121         BUS_EXEC_COMMAND_LIST_VTABLE("ExecStopPre", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
 122         BUS_EXEC_COMMAND_LIST_VTABLE("ExecStopPost", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
 123         SD_BUS_VTABLE_END
 124 };
 125
 126 static bool check_size_t_truncation(uint64_t t) {
 127         return (size_t) t == t;
 128 }
 129
 130 static const char* socket_protocol_to_string(int32_t i) {
 131         if (i == IPPROTO_IP)
 132                 return "";
 133
 134         if (!IN_SET(i, IPPROTO_UDPLITE, IPPROTO_SCTP))
 135                 return NULL;
 136
 137         return ip_protocol_to_name(i);
 138 }
 139
 140 static BUS_DEFINE_SET_TRANSIENT(int, "i", int32_t, int, "%" PRIi32);
 141 static BUS_DEFINE_SET_TRANSIENT(message_queue, "x", int64_t, long, "%" PRIi64);
 142 static BUS_DEFINE_SET_TRANSIENT_IS_VALID(size_t_check_truncation, "t", uint64_t, size_t, "%" PRIu64, check_size_t_truncation);
 143 static BUS_DEFINE_SET_TRANSIENT_PARSE(bind_ipv6_only, SocketAddressBindIPv6Only, socket_address_bind_ipv6_only_or_bool_from_string);
 144 static BUS_DEFINE_SET_TRANSIENT_STRING_WITH_CHECK(fdname, fdname_is_valid);
 145 static BUS_DEFINE_SET_TRANSIENT_STRING_WITH_CHECK(ifname, ifname_valid);
 146 static BUS_DEFINE_SET_TRANSIENT_TO_STRING_ALLOC(ip_tos, "i", int32_t, int, "%" PRIi32, ip_tos_to_string_alloc);
 147 static BUS_DEFINE_SET_TRANSIENT_TO_STRING(socket_protocol, "i", int32_t, int, "%" PRIi32, socket_protocol_to_string);
 148 static BUS_DEFINE_SET_TRANSIENT_PARSE(socket_timestamping, SocketTimestamping, socket_timestamping_from_string_harder);
 149
 150 static int bus_socket_set_transient_property(
 151                 Socket *s,
 152                 const char *name,
 153                 sd_bus_message *message,
 154                 UnitWriteFlags flags,
 155                 sd_bus_error *error) {
 156
 157         SocketExecCommand ci;
 158         Unit *u = UNIT(s);
 159         int r;
 160
 161         assert(s);
 162         assert(name);
 163         assert(message);
 164
 165         flags |= UNIT_PRIVATE;
 166
 167         if (streq(name, "Accept"))
 168                 return bus_set_transient_bool(u, name, &s->accept, message, flags, error);
 169
 170         if (streq(name, "FlushPending"))
 171                 return bus_set_transient_bool(u, name, &s->flush_pending, message, flags, error);
 172
 173         if (streq(name, "Writable"))
 174                 return bus_set_transient_bool(u, name, &s->writable, message, flags, error);
 175
 176         if (streq(name, "KeepAlive"))
 177                 return bus_set_transient_bool(u, name, &s->keep_alive, message, flags, error);
 178
 179         if (streq(name, "NoDelay"))
 180                 return bus_set_transient_bool(u, name, &s->no_delay, message, flags, error);
 181
 182         if (streq(name, "FreeBind"))
 183                 return bus_set_transient_bool(u, name, &s->free_bind, message, flags, error);
 184
 185         if (streq(name, "Transparent"))
 186                 return bus_set_transient_bool(u, name, &s->transparent, message, flags, error);
 187
 188         if (streq(name, "Broadcast"))
 189                 return bus_set_transient_bool(u, name, &s->broadcast, message, flags, error);
 190
 191         if (streq(name, "PassCredentials"))
 192                 return bus_set_transient_bool(u, name, &s->pass_cred, message, flags, error);
 193
 194         if (streq(name, "PassFileDescriptorsToExec"))
 195                 return bus_set_transient_bool(u, name, &s->pass_fds_to_exec, message, flags, error);
 196
 197         if (streq(name, "PassSecurity"))
 198                 return bus_set_transient_bool(u, name, &s->pass_sec, message, flags, error);
 199
 200         if (streq(name, "PassPacketInfo"))
 201                 return bus_set_transient_bool(u, name, &s->pass_pktinfo, message, flags, error);
 202
 203         if (streq(name, "Timestamping"))
 204                 return bus_set_transient_socket_timestamping(u, name, &s->timestamping, message, flags, error);
 205
 206         if (streq(name, "ReusePort"))
 207                 return bus_set_transient_bool(u, name, &s->reuse_port, message, flags, error);
 208
 209         if (streq(name, "RemoveOnStop"))
 210                 return bus_set_transient_bool(u, name, &s->remove_on_stop, message, flags, error);
 211
 212         if (streq(name, "SELinuxContextFromNet"))
 213                 return bus_set_transient_bool(u, name, &s->selinux_context_from_net, message, flags, error);
 214
 215         if (streq(name, "Priority"))
 216                 return bus_set_transient_int(u, name, &s->priority, message, flags, error);
 217
 218         if (streq(name, "IPTTL"))
 219                 return bus_set_transient_int(u, name, &s->ip_ttl, message, flags, error);
 220
 221         if (streq(name, "Mark"))
 222                 return bus_set_transient_int(u, name, &s->mark, message, flags, error);
 223
 224         if (streq(name, "Backlog"))
 225                 return bus_set_transient_unsigned(u, name, &s->backlog, message, flags, error);
 226
 227         if (streq(name, "MaxConnections"))
 228                 return bus_set_transient_unsigned(u, name, &s->max_connections, message, flags, error);
 229
 230         if (streq(name, "MaxConnectionsPerSource"))
 231                 return bus_set_transient_unsigned(u, name, &s->max_connections_per_source, message, flags, error);
 232
 233         if (streq(name, "KeepAliveProbes"))
 234                 return bus_set_transient_unsigned(u, name, &s->keep_alive_cnt, message, flags, error);
 235
 236         if (streq(name, "TriggerLimitBurst"))
 237                 return bus_set_transient_unsigned(u, name, &s->trigger_limit.burst, message, flags, error);
 238
 239         if (streq(name, "PollLimitBurst"))
 240                 return bus_set_transient_unsigned(u, name, &s->poll_limit_burst, message, flags, error);
 241
 242         if (streq(name, "SocketMode"))
 243                 return bus_set_transient_mode_t(u, name, &s->socket_mode, message, flags, error);
 244
 245         if (streq(name, "DirectoryMode"))
 246                 return bus_set_transient_mode_t(u, name, &s->directory_mode, message, flags, error);
 247
 248         if (streq(name, "MessageQueueMaxMessages"))
 249                 return bus_set_transient_message_queue(u, name, &s->mq_maxmsg, message, flags, error);
 250
 251         if (streq(name, "MessageQueueMessageSize"))
 252                 return bus_set_transient_message_queue(u, name, &s->mq_msgsize, message, flags, error);
 253
 254         if (streq(name, "TimeoutUSec"))
 255                 return bus_set_transient_usec_fix_0(u, name, &s->timeout_usec, message, flags, error);
 256
 257         if (streq(name, "KeepAliveTimeUSec"))
 258                 return bus_set_transient_usec(u, name, &s->keep_alive_time, message, flags, error);
 259
 260         if (streq(name, "KeepAliveIntervalUSec"))
 261                 return bus_set_transient_usec(u, name, &s->keep_alive_interval, message, flags, error);
 262
 263         if (streq(name, "DeferAcceptUSec"))
 264                 return bus_set_transient_usec(u, name, &s->defer_accept, message, flags, error);
 265
 266         if (streq(name, "TriggerLimitIntervalUSec"))
 267                 return bus_set_transient_usec(u, name, &s->trigger_limit.interval, message, flags, error);
 268
 269         if (streq(name, "PollLimitIntervalUSec"))
 270                 return bus_set_transient_usec(u, name, &s->poll_limit_interval, message, flags, error);
 271
 272         if (streq(name, "SmackLabel"))
 273                 return bus_set_transient_string(u, name, &s->smack, message, flags, error);
 274
 275         if (streq(name, "SmackLabelIPin"))
 276                 return bus_set_transient_string(u, name, &s->smack_ip_in, message, flags, error);
 277
 278         if (streq(name, "SmackLabelIPOut"))
 279                 return bus_set_transient_string(u, name, &s->smack_ip_out, message, flags, error);
 280
 281         if (streq(name, "TCPCongestion"))
 282                 return bus_set_transient_string(u, name, &s->tcp_congestion, message, flags, error);
 283
 284         if (streq(name, "FileDescriptorName"))
 285                 return bus_set_transient_fdname(u, name, &s->fdname, message, flags, error);
 286
 287         if (streq(name, "SocketUser"))
 288                 return bus_set_transient_user_relaxed(u, name, &s->user, message, flags, error);
 289
 290         if (streq(name, "SocketGroup"))
 291                 return bus_set_transient_user_relaxed(u, name, &s->group, message, flags, error);
 292
 293         if (streq(name, "BindIPv6Only"))
 294                 return bus_set_transient_bind_ipv6_only(u, name, &s->bind_ipv6_only, message, flags, error);
 295
 296         if (streq(name, "ReceiveBuffer"))
 297                 return bus_set_transient_size_t_check_truncation(u, name, &s->receive_buffer, message, flags, error);
 298
 299         if (streq(name, "SendBuffer"))
 300                 return bus_set_transient_size_t_check_truncation(u, name, &s->send_buffer, message, flags, error);
 301
 302         if (streq(name, "PipeSize"))
 303                 return bus_set_transient_size_t_check_truncation(u, name, &s->pipe_size, message, flags, error);
 304
 305         if (streq(name, "BindToDevice"))
 306                 return bus_set_transient_ifname(u, name, &s->bind_to_device, message, flags, error);
 307
 308         if (streq(name, "IPTOS"))
 309                 return bus_set_transient_ip_tos(u, name, &s->ip_tos, message, flags, error);
 310
 311         if (streq(name, "SocketProtocol"))
 312                 return bus_set_transient_socket_protocol(u, name, &s->socket_protocol, message, flags, error);
 313
 314         ci = socket_exec_command_from_string(name);
 315         if (ci >= 0)
 316                 return bus_set_transient_exec_command(u, name,
 317                                                       &s->exec_command[ci],
 318                                                       message, flags, error);
 319
 320         if (streq(name, "Symlinks")) {
 321                 _cleanup_strv_free_ char **l = NULL;
 322
 323                 r = sd_bus_message_read_strv(message, &l);
 324                 if (r < 0)
 325                         return r;
 326
 327                 STRV_FOREACH(p, l)
 328                         if (!path_is_absolute(*p))
 329                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Symlink path is not absolute: %s", *p);
 330
 331                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
 332                         if (strv_isempty(l)) {
 333                                 s->symlinks = strv_free(s->symlinks);
 334                                 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "%s=", name);
 335                         } else {
 336                                 _cleanup_free_ char *joined = NULL;
 337
 338                                 r = strv_extend_strv(&s->symlinks, l, true);
 339                                 if (r < 0)
 340                                         return -ENOMEM;
 341
 342                                 joined = strv_join(l, " ");
 343                                 if (!joined)
 344                                         return -ENOMEM;
 345
 346                                 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "%s=%s", name, joined);
 347                         }
 348                 }
 349
 350                 return 1;
 351
 352         } else if (streq(name, "Listen")) {
 353                 const char *t, *a;
 354                 bool empty = true;
 355
 356                 r = sd_bus_message_enter_container(message, 'a', "(ss)");
 357                 if (r < 0)
 358                         return r;
 359
 360                 while ((r = sd_bus_message_read(message, "(ss)", &t, &a)) > 0) {
 361                         _cleanup_(socket_port_freep) SocketPort *p = NULL;
 362
 363                         p = new(SocketPort, 1);
 364                         if (!p)
 365                                 return log_oom();
 366
 367                         *p = (SocketPort) {
 368                                 .fd = -EBADF,
 369                                 .socket = s,
 370                         };
 371
 372                         p->type = socket_port_type_from_string(t);
 373                         if (p->type < 0)
 374                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown Socket type: %s", t);
 375
 376                         if (p->type != SOCKET_SOCKET) {
 377                                 if (!path_is_absolute(a) || !path_is_valid(a))
 378                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid socket path: %s", a);
 379
 380                                 r = path_simplify_alloc(a, &p->path);
 381                                 if (r < 0)
 382                                         return r;
 383
 384                         } else if (streq(t, "Netlink")) {
 385                                 r = socket_address_parse_netlink(&p->address, a);
 386                                 if (r < 0)
 387                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid netlink address: %s", a);
 388
 389                         } else {
 390                                 r = socket_address_parse(&p->address, a);
 391                                 if (r < 0)
 392                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address: %s", a);
 393
 394                                 p->address.type = socket_address_type_from_string(t);
 395                                 if (p->address.type < 0)
 396                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address type: %s", t);
 397
 398                                 if (socket_address_family(&p->address) != AF_UNIX && p->address.type == SOCK_SEQPACKET)
 399                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Address family not supported: %s", a);
 400                         }
 401
 402                         empty = false;
 403
 404                         if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
 405                                 LIST_APPEND(port, s->ports, TAKE_PTR(p));
 406                                 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "Listen%s=%s", t, a);
 407                         }
 408                 }
 409                 if (r < 0)
 410                         return r;
 411
 412                 r = sd_bus_message_exit_container(message);
 413                 if (r < 0)
 414                         return r;
 415
 416                 if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) {
 417                         socket_free_ports(s);
 418                         unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "ListenStream=");
 419                 }
 420
 421                 return 1;
 422         }
 423
 424         return 0;
 425 }
 426
 427 int bus_socket_set_property(
 428                 Unit *u,
 429                 const char *name,
 430                 sd_bus_message *message,
 431                 UnitWriteFlags flags,
 432                 sd_bus_error *error) {
 433
 434         Socket *s = SOCKET(u);
 435         int r;
 436
 437         assert(s);
 438         assert(name);
 439         assert(message);
 440
 441         assert(s);
 442         assert(name);
 443         assert(message);
 444
 445         r = bus_cgroup_set_property(u, &s->cgroup_context, name, message, flags, error);
 446         if (r != 0)
 447                 return r;
 448
 449         if (u->transient && u->load_state == UNIT_STUB) {
 450                 /* This is a transient unit, let's load a little more */
 451
 452                 r = bus_socket_set_transient_property(s, name, message, flags, error);
 453                 if (r != 0)
 454                         return r;
 455
 456                 r = bus_exec_context_set_transient_property(u, &s->exec_context, name, message, flags, error);
 457                 if (r != 0)
 458                         return r;
 459
 460                 r = bus_kill_context_set_transient_property(u, &s->kill_context, name, message, flags, error);
 461                 if (r != 0)
 462                         return r;
 463         }
 464
 465         return 0;
 466 }
 467
 468 int bus_socket_commit_properties(Unit *u) {
 469         assert(u);
 470
 471         unit_realize_cgroup(u);
 472
 473         return 0;
 474 }