src/core/dbus-socket.c

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