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         SocketPort *p;
  36         int r;
  37
  38         assert(bus);
  39         assert(reply);
  40         assert(s);
  41
  42         r = sd_bus_message_open_container(reply, 'a', "(ss)");
  43         if (r < 0)
  44                 return r;
  45
  46         LIST_FOREACH(port, p, s->ports) {
  47                 _cleanup_free_ char *address = NULL;
  48                 const char *a;
  49
  50                 switch (p->type) {
  51                         case SOCKET_SOCKET: {
  52                                 r = socket_address_print(&p->address, &address);
  53                                 if (r)
  54                                         return r;
  55
  56                                 a = address;
  57                                 break;
  58                         }
  59
  60                         case SOCKET_SPECIAL:
  61                         case SOCKET_MQUEUE:
  62                         case SOCKET_FIFO:
  63                         case SOCKET_USB_FUNCTION:
  64                                 a = p->path;
  65                                 break;
  66
  67                         default:
  68                                 assert_not_reached();
  69                 }
  70
  71                 r = sd_bus_message_append(reply, "(ss)", socket_port_type_to_string(p), a);
  72                 if (r < 0)
  73                         return r;
  74         }
  75
  76         return sd_bus_message_close_container(reply);
  77 }
  78
  79 const sd_bus_vtable bus_socket_vtable[] = {
  80         SD_BUS_VTABLE_START(0),
  81         SD_BUS_PROPERTY("BindIPv6Only", "s", property_get_bind_ipv6_only, offsetof(Socket, bind_ipv6_only), SD_BUS_VTABLE_PROPERTY_CONST),
  82         SD_BUS_PROPERTY("Backlog", "u", bus_property_get_unsigned, offsetof(Socket, backlog), SD_BUS_VTABLE_PROPERTY_CONST),
  83         SD_BUS_PROPERTY("TimeoutUSec", "t", bus_property_get_usec, offsetof(Socket, timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
  84         SD_BUS_PROPERTY("BindToDevice", "s", NULL, offsetof(Socket, bind_to_device), SD_BUS_VTABLE_PROPERTY_CONST),
  85         SD_BUS_PROPERTY("SocketUser", "s", NULL, offsetof(Socket, user), SD_BUS_VTABLE_PROPERTY_CONST),
  86         SD_BUS_PROPERTY("SocketGroup", "s", NULL, offsetof(Socket, group), SD_BUS_VTABLE_PROPERTY_CONST),
  87         SD_BUS_PROPERTY("SocketMode", "u", bus_property_get_mode, offsetof(Socket, socket_mode), SD_BUS_VTABLE_PROPERTY_CONST),
  88         SD_BUS_PROPERTY("DirectoryMode", "u", bus_property_get_mode, offsetof(Socket, directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
  89         SD_BUS_PROPERTY("Accept", "b", bus_property_get_bool, offsetof(Socket, accept), SD_BUS_VTABLE_PROPERTY_CONST),
  90         SD_BUS_PROPERTY("FlushPending", "b", bus_property_get_bool, offsetof(Socket, flush_pending), SD_BUS_VTABLE_PROPERTY_CONST),
  91         SD_BUS_PROPERTY("Writable", "b", bus_property_get_bool, offsetof(Socket, writable), SD_BUS_VTABLE_PROPERTY_CONST),
  92         SD_BUS_PROPERTY("KeepAlive", "b", bus_property_get_bool, offsetof(Socket, keep_alive), SD_BUS_VTABLE_PROPERTY_CONST),
  93         SD_BUS_PROPERTY("KeepAliveTimeUSec", "t", bus_property_get_usec, offsetof(Socket, keep_alive_time), SD_BUS_VTABLE_PROPERTY_CONST),
  94         SD_BUS_PROPERTY("KeepAliveIntervalUSec", "t", bus_property_get_usec, offsetof(Socket, keep_alive_interval), SD_BUS_VTABLE_PROPERTY_CONST),
  95         SD_BUS_PROPERTY("KeepAliveProbes", "u", bus_property_get_unsigned, offsetof(Socket, keep_alive_cnt), SD_BUS_VTABLE_PROPERTY_CONST),
  96         SD_BUS_PROPERTY("DeferAcceptUSec" , "t", bus_property_get_usec, offsetof(Socket, defer_accept), SD_BUS_VTABLE_PROPERTY_CONST),
  97         SD_BUS_PROPERTY("NoDelay", "b", bus_property_get_bool, offsetof(Socket, no_delay), SD_BUS_VTABLE_PROPERTY_CONST),
  98         SD_BUS_PROPERTY("Priority", "i", bus_property_get_int, offsetof(Socket, priority), SD_BUS_VTABLE_PROPERTY_CONST),
  99         SD_BUS_PROPERTY("ReceiveBuffer", "t", bus_property_get_size, offsetof(Socket, receive_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
 100         SD_BUS_PROPERTY("SendBuffer", "t", bus_property_get_size, offsetof(Socket, send_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
 101         SD_BUS_PROPERTY("IPTOS", "i", bus_property_get_int, offsetof(Socket, ip_tos), SD_BUS_VTABLE_PROPERTY_CONST),
 102         SD_BUS_PROPERTY("IPTTL", "i", bus_property_get_int, offsetof(Socket, ip_ttl), SD_BUS_VTABLE_PROPERTY_CONST),
 103         SD_BUS_PROPERTY("PipeSize", "t", bus_property_get_size, offsetof(Socket, pipe_size), SD_BUS_VTABLE_PROPERTY_CONST),
 104         SD_BUS_PROPERTY("FreeBind", "b", bus_property_get_bool, offsetof(Socket, free_bind), SD_BUS_VTABLE_PROPERTY_CONST),
 105         SD_BUS_PROPERTY("Transparent", "b", bus_property_get_bool, offsetof(Socket, transparent), SD_BUS_VTABLE_PROPERTY_CONST),
 106         SD_BUS_PROPERTY("Broadcast", "b", bus_property_get_bool, offsetof(Socket, broadcast), SD_BUS_VTABLE_PROPERTY_CONST),
 107         SD_BUS_PROPERTY("PassCredentials", "b", bus_property_get_bool, offsetof(Socket, pass_cred), SD_BUS_VTABLE_PROPERTY_CONST),
 108         SD_BUS_PROPERTY("PassSecurity", "b", bus_property_get_bool, offsetof(Socket, pass_sec), SD_BUS_VTABLE_PROPERTY_CONST),
 109         SD_BUS_PROPERTY("PassPacketInfo", "b", bus_property_get_bool, offsetof(Socket, pass_pktinfo), SD_BUS_VTABLE_PROPERTY_CONST),
 110         SD_BUS_PROPERTY("Timestamping", "s", property_get_timestamping, offsetof(Socket, timestamping), SD_BUS_VTABLE_PROPERTY_CONST),
 111         SD_BUS_PROPERTY("RemoveOnStop", "b", bus_property_get_bool, offsetof(Socket, remove_on_stop), SD_BUS_VTABLE_PROPERTY_CONST),
 112         SD_BUS_PROPERTY("Listen", "a(ss)", property_get_listen, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 113         SD_BUS_PROPERTY("Symlinks", "as", NULL, offsetof(Socket, symlinks), SD_BUS_VTABLE_PROPERTY_CONST),
 114         SD_BUS_PROPERTY("Mark", "i", bus_property_get_int, offsetof(Socket, mark), SD_BUS_VTABLE_PROPERTY_CONST),
 115         SD_BUS_PROPERTY("MaxConnections", "u", bus_property_get_unsigned, offsetof(Socket, max_connections), SD_BUS_VTABLE_PROPERTY_CONST),
 116         SD_BUS_PROPERTY("MaxConnectionsPerSource", "u", bus_property_get_unsigned, offsetof(Socket, max_connections_per_source), SD_BUS_VTABLE_PROPERTY_CONST),
 117         SD_BUS_PROPERTY("MessageQueueMaxMessages", "x", bus_property_get_long, offsetof(Socket, mq_maxmsg), SD_BUS_VTABLE_PROPERTY_CONST),
 118         SD_BUS_PROPERTY("MessageQueueMessageSize", "x", bus_property_get_long, offsetof(Socket, mq_msgsize), SD_BUS_VTABLE_PROPERTY_CONST),
 119         SD_BUS_PROPERTY("TCPCongestion", "s", NULL, offsetof(Socket, tcp_congestion), SD_BUS_VTABLE_PROPERTY_CONST),
 120         SD_BUS_PROPERTY("ReusePort", "b",  bus_property_get_bool, offsetof(Socket, reuse_port), SD_BUS_VTABLE_PROPERTY_CONST),
 121         SD_BUS_PROPERTY("SmackLabel", "s", NULL, offsetof(Socket, smack), SD_BUS_VTABLE_PROPERTY_CONST),
 122         SD_BUS_PROPERTY("SmackLabelIPIn", "s", NULL, offsetof(Socket, smack_ip_in), SD_BUS_VTABLE_PROPERTY_CONST),
 123         SD_BUS_PROPERTY("SmackLabelIPOut", "s", NULL, offsetof(Socket, smack_ip_out), SD_BUS_VTABLE_PROPERTY_CONST),
 124         SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Socket, control_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 125         SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Socket, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 126         SD_BUS_PROPERTY("NConnections", "u", bus_property_get_unsigned, offsetof(Socket, n_connections), 0),
 127         SD_BUS_PROPERTY("NAccepted", "u", bus_property_get_unsigned, offsetof(Socket, n_accepted), 0),
 128         SD_BUS_PROPERTY("NRefused", "u", bus_property_get_unsigned, offsetof(Socket, n_refused), 0),
 129         SD_BUS_PROPERTY("FileDescriptorName", "s", property_get_fdname, 0, 0),
 130         SD_BUS_PROPERTY("SocketProtocol", "i", bus_property_get_int, offsetof(Socket, socket_protocol), SD_BUS_VTABLE_PROPERTY_CONST),
 131         SD_BUS_PROPERTY("TriggerLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Socket, trigger_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
 132         SD_BUS_PROPERTY("TriggerLimitBurst", "u", bus_property_get_unsigned, offsetof(Socket, trigger_limit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
 133         SD_BUS_PROPERTY("UID", "u", bus_property_get_uid, offsetof(Unit, ref_uid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 134         SD_BUS_PROPERTY("GID", "u", bus_property_get_gid, offsetof(Unit, ref_gid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 135         BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPre", offsetof(Socket, exec_command[SOCKET_EXEC_START_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
 136         BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPost", offsetof(Socket, exec_command[SOCKET_EXEC_START_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
 137         BUS_EXEC_COMMAND_LIST_VTABLE("ExecStopPre", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
 138         BUS_EXEC_COMMAND_LIST_VTABLE("ExecStopPost", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
 139         SD_BUS_VTABLE_END
 140 };
 141
 142 static bool check_size_t_truncation(uint64_t t) {
 143         return (size_t) t == t;
 144 }
 145
 146 static const char* socket_protocol_to_string(int32_t i) {
 147         if (i == IPPROTO_IP)
 148                 return "";
 149
 150         if (!IN_SET(i, IPPROTO_UDPLITE, IPPROTO_SCTP))
 151                 return NULL;
 152
 153         return ip_protocol_to_name(i);
 154 }
 155
 156 static BUS_DEFINE_SET_TRANSIENT(int, "i", int32_t, int, "%" PRIi32);
 157 static BUS_DEFINE_SET_TRANSIENT(message_queue, "x", int64_t, long, "%" PRIi64);
 158 static BUS_DEFINE_SET_TRANSIENT_IS_VALID(size_t_check_truncation, "t", uint64_t, size_t, "%" PRIu64, check_size_t_truncation);
 159 static BUS_DEFINE_SET_TRANSIENT_PARSE(bind_ipv6_only, SocketAddressBindIPv6Only, socket_address_bind_ipv6_only_or_bool_from_string);
 160 static BUS_DEFINE_SET_TRANSIENT_STRING_WITH_CHECK(fdname, fdname_is_valid);
 161 static BUS_DEFINE_SET_TRANSIENT_STRING_WITH_CHECK(ifname, ifname_valid);
 162 static BUS_DEFINE_SET_TRANSIENT_TO_STRING_ALLOC(ip_tos, "i", int32_t, int, "%" PRIi32, ip_tos_to_string_alloc);
 163 static BUS_DEFINE_SET_TRANSIENT_TO_STRING(socket_protocol, "i", int32_t, int, "%" PRIi32, socket_protocol_to_string);
 164 static BUS_DEFINE_SET_TRANSIENT_PARSE(socket_timestamping, SocketTimestamping, socket_timestamping_from_string_harder);
 165
 166 static int bus_socket_set_transient_property(
 167                 Socket *s,
 168                 const char *name,
 169                 sd_bus_message *message,
 170                 UnitWriteFlags flags,
 171                 sd_bus_error *error) {
 172
 173         SocketExecCommand ci;
 174         Unit *u = UNIT(s);
 175         int r;
 176
 177         assert(s);
 178         assert(name);
 179         assert(message);
 180
 181         flags |= UNIT_PRIVATE;
 182
 183         if (streq(name, "Accept"))
 184                 return bus_set_transient_bool(u, name, &s->accept, message, flags, error);
 185
 186         if (streq(name, "FlushPending"))
 187                 return bus_set_transient_bool(u, name, &s->flush_pending, message, flags, error);
 188
 189         if (streq(name, "Writable"))
 190                 return bus_set_transient_bool(u, name, &s->writable, message, flags, error);
 191
 192         if (streq(name, "KeepAlive"))
 193                 return bus_set_transient_bool(u, name, &s->keep_alive, message, flags, error);
 194
 195         if (streq(name, "NoDelay"))
 196                 return bus_set_transient_bool(u, name, &s->no_delay, message, flags, error);
 197
 198         if (streq(name, "FreeBind"))
 199                 return bus_set_transient_bool(u, name, &s->free_bind, message, flags, error);
 200
 201         if (streq(name, "Transparent"))
 202                 return bus_set_transient_bool(u, name, &s->transparent, message, flags, error);
 203
 204         if (streq(name, "Broadcast"))
 205                 return bus_set_transient_bool(u, name, &s->broadcast, message, flags, error);
 206
 207         if (streq(name, "PassCredentials"))
 208                 return bus_set_transient_bool(u, name, &s->pass_cred, message, flags, error);
 209
 210         if (streq(name, "PassSecurity"))
 211                 return bus_set_transient_bool(u, name, &s->pass_sec, message, flags, error);
 212
 213         if (streq(name, "PassPacketInfo"))
 214                 return bus_set_transient_bool(u, name, &s->pass_pktinfo, message, flags, error);
 215
 216         if (streq(name, "Timestamping"))
 217                 return bus_set_transient_socket_timestamping(u, name, &s->timestamping, message, flags, error);
 218
 219         if (streq(name, "ReusePort"))
 220                 return bus_set_transient_bool(u, name, &s->reuse_port, message, flags, error);
 221
 222         if (streq(name, "RemoveOnStop"))
 223                 return bus_set_transient_bool(u, name, &s->remove_on_stop, message, flags, error);
 224
 225         if (streq(name, "SELinuxContextFromNet"))
 226                 return bus_set_transient_bool(u, name, &s->selinux_context_from_net, message, flags, error);
 227
 228         if (streq(name, "Priority"))
 229                 return bus_set_transient_int(u, name, &s->priority, message, flags, error);
 230
 231         if (streq(name, "IPTTL"))
 232                 return bus_set_transient_int(u, name, &s->ip_ttl, message, flags, error);
 233
 234         if (streq(name, "Mark"))
 235                 return bus_set_transient_int(u, name, &s->mark, message, flags, error);
 236
 237         if (streq(name, "Backlog"))
 238                 return bus_set_transient_unsigned(u, name, &s->backlog, message, flags, error);
 239
 240         if (streq(name, "MaxConnections"))
 241                 return bus_set_transient_unsigned(u, name, &s->max_connections, message, flags, error);
 242
 243         if (streq(name, "MaxConnectionsPerSource"))
 244                 return bus_set_transient_unsigned(u, name, &s->max_connections_per_source, message, flags, error);
 245
 246         if (streq(name, "KeepAliveProbes"))
 247                 return bus_set_transient_unsigned(u, name, &s->keep_alive_cnt, message, flags, error);
 248
 249         if (streq(name, "TriggerLimitBurst"))
 250                 return bus_set_transient_unsigned(u, name, &s->trigger_limit.burst, message, flags, error);
 251
 252         if (streq(name, "SocketMode"))
 253                 return bus_set_transient_mode_t(u, name, &s->socket_mode, message, flags, error);
 254
 255         if (streq(name, "DirectoryMode"))
 256                 return bus_set_transient_mode_t(u, name, &s->directory_mode, message, flags, error);
 257
 258         if (streq(name, "MessageQueueMaxMessages"))
 259                 return bus_set_transient_message_queue(u, name, &s->mq_maxmsg, message, flags, error);
 260
 261         if (streq(name, "MessageQueueMessageSize"))
 262                 return bus_set_transient_message_queue(u, name, &s->mq_msgsize, message, flags, error);
 263
 264         if (streq(name, "TimeoutUSec"))
 265                 return bus_set_transient_usec_fix_0(u, name, &s->timeout_usec, message, flags, error);
 266
 267         if (streq(name, "KeepAliveTimeUSec"))
 268                 return bus_set_transient_usec(u, name, &s->keep_alive_time, message, flags, error);
 269
 270         if (streq(name, "KeepAliveIntervalUSec"))
 271                 return bus_set_transient_usec(u, name, &s->keep_alive_interval, message, flags, error);
 272
 273         if (streq(name, "DeferAcceptUSec"))
 274                 return bus_set_transient_usec(u, name, &s->defer_accept, message, flags, error);
 275
 276         if (streq(name, "TriggerLimitIntervalUSec"))
 277                 return bus_set_transient_usec(u, name, &s->trigger_limit.interval, message, flags, error);
 278
 279         if (streq(name, "SmackLabel"))
 280                 return bus_set_transient_string(u, name, &s->smack, message, flags, error);
 281
 282         if (streq(name, "SmackLabelIPin"))
 283                 return bus_set_transient_string(u, name, &s->smack_ip_in, message, flags, error);
 284
 285         if (streq(name, "SmackLabelIPOut"))
 286                 return bus_set_transient_string(u, name, &s->smack_ip_out, message, flags, error);
 287
 288         if (streq(name, "TCPCongestion"))
 289                 return bus_set_transient_string(u, name, &s->tcp_congestion, message, flags, error);
 290
 291         if (streq(name, "FileDescriptorName"))
 292                 return bus_set_transient_fdname(u, name, &s->fdname, message, flags, error);
 293
 294         if (streq(name, "SocketUser"))
 295                 return bus_set_transient_user_relaxed(u, name, &s->user, message, flags, error);
 296
 297         if (streq(name, "SocketGroup"))
 298                 return bus_set_transient_user_relaxed(u, name, &s->group, message, flags, error);
 299
 300         if (streq(name, "BindIPv6Only"))
 301                 return bus_set_transient_bind_ipv6_only(u, name, &s->bind_ipv6_only, message, flags, error);
 302
 303         if (streq(name, "ReceiveBuffer"))
 304                 return bus_set_transient_size_t_check_truncation(u, name, &s->receive_buffer, message, flags, error);
 305
 306         if (streq(name, "SendBuffer"))
 307                 return bus_set_transient_size_t_check_truncation(u, name, &s->send_buffer, message, flags, error);
 308
 309         if (streq(name, "PipeSize"))
 310                 return bus_set_transient_size_t_check_truncation(u, name, &s->pipe_size, message, flags, error);
 311
 312         if (streq(name, "BindToDevice"))
 313                 return bus_set_transient_ifname(u, name, &s->bind_to_device, message, flags, error);
 314
 315         if (streq(name, "IPTOS"))
 316                 return bus_set_transient_ip_tos(u, name, &s->ip_tos, message, flags, error);
 317
 318         if (streq(name, "SocketProtocol"))
 319                 return bus_set_transient_socket_protocol(u, name, &s->socket_protocol, message, flags, error);
 320
 321         ci = socket_exec_command_from_string(name);
 322         if (ci >= 0)
 323                 return bus_set_transient_exec_command(u, name,
 324                                                       &s->exec_command[ci],
 325                                                       message, flags, error);
 326
 327         if (streq(name, "Symlinks")) {
 328                 _cleanup_strv_free_ char **l = NULL;
 329                 char **p;
 330
 331                 r = sd_bus_message_read_strv(message, &l);
 332                 if (r < 0)
 333                         return r;
 334
 335                 STRV_FOREACH(p, l) {
 336                         if (!path_is_absolute(*p))
 337                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Symlink path is not absolute: %s", *p);
 338                 }
 339
 340                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
 341                         if (strv_isempty(l)) {
 342                                 s->symlinks = strv_free(s->symlinks);
 343                                 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "%s=", name);
 344                         } else {
 345                                 _cleanup_free_ char *joined = NULL;
 346
 347                                 r = strv_extend_strv(&s->symlinks, l, true);
 348                                 if (r < 0)
 349                                         return -ENOMEM;
 350
 351                                 joined = strv_join(l, " ");
 352                                 if (!joined)
 353                                         return -ENOMEM;
 354
 355                                 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "%s=%s", name, joined);
 356                         }
 357                 }
 358
 359                 return 1;
 360
 361         } else if (streq(name, "Listen")) {
 362                 const char *t, *a;
 363                 bool empty = true;
 364
 365                 r = sd_bus_message_enter_container(message, 'a', "(ss)");
 366                 if (r < 0)
 367                         return r;
 368
 369                 while ((r = sd_bus_message_read(message, "(ss)", &t, &a)) > 0) {
 370                         _cleanup_free_ SocketPort *p = NULL;
 371
 372                         p = new(SocketPort, 1);
 373                         if (!p)
 374                                 return log_oom();
 375
 376                         *p = (SocketPort) {
 377                                 .fd = -1,
 378                                 .socket = s,
 379                         };
 380
 381                         p->type = socket_port_type_from_string(t);
 382                         if (p->type < 0)
 383                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown Socket type: %s", t);
 384
 385                         if (p->type != SOCKET_SOCKET) {
 386                                 if (!path_is_valid(a))
 387                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid socket path: %s", a);
 388
 389                                 p->path = strdup(a);
 390                                 if (!p->path)
 391                                         return log_oom();
 392
 393                                 path_simplify(p->path);
 394
 395                         } else if (streq(t, "Netlink")) {
 396                                 r = socket_address_parse_netlink(&p->address, a);
 397                                 if (r < 0)
 398                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid netlink address: %s", a);
 399
 400                         } else {
 401                                 r = socket_address_parse(&p->address, a);
 402                                 if (r < 0)
 403                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address: %s", a);
 404
 405                                 p->address.type = socket_address_type_from_string(t);
 406                                 if (p->address.type < 0)
 407                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address type: %s", t);
 408
 409                                 if (socket_address_family(&p->address) != AF_LOCAL && p->address.type == SOCK_SEQPACKET)
 410                                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Address family not supported: %s", a);
 411                         }
 412
 413                         empty = false;
 414
 415                         if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
 416                                 LIST_APPEND(port, s->ports, TAKE_PTR(p));
 417                                 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "Listen%s=%s", t, a);
 418                         }
 419                 }
 420                 if (r < 0)
 421                         return r;
 422
 423                 r = sd_bus_message_exit_container(message);
 424                 if (r < 0)
 425                         return r;
 426
 427                 if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) {
 428                         socket_free_ports(s);
 429                         unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "ListenStream=");
 430                 }
 431
 432                 return 1;
 433         }
 434
 435         return 0;
 436 }
 437
 438 int bus_socket_set_property(
 439                 Unit *u,
 440                 const char *name,
 441                 sd_bus_message *message,
 442                 UnitWriteFlags flags,
 443                 sd_bus_error *error) {
 444
 445         Socket *s = SOCKET(u);
 446         int r;
 447
 448         assert(s);
 449         assert(name);
 450         assert(message);
 451
 452         assert(s);
 453         assert(name);
 454         assert(message);
 455
 456         r = bus_cgroup_set_property(u, &s->cgroup_context, name, message, flags, error);
 457         if (r != 0)
 458                 return r;
 459
 460         if (u->transient && u->load_state == UNIT_STUB) {
 461                 /* This is a transient unit, let's load a little more */
 462
 463                 r = bus_socket_set_transient_property(s, name, message, flags, error);
 464                 if (r != 0)
 465                         return r;
 466
 467                 r = bus_exec_context_set_transient_property(u, &s->exec_context, name, message, flags, error);
 468                 if (r != 0)
 469                         return r;
 470
 471                 r = bus_kill_context_set_transient_property(u, &s->kill_context, name, message, flags, error);
 472                 if (r != 0)
 473                         return r;
 474         }
 475
 476         return 0;
 477 }
 478
 479 int bus_socket_commit_properties(Unit *u) {
 480         assert(u);
 481
 482         unit_realize_cgroup(u);
 483
 484         return 0;
 485 }