src/dbus-manager.c

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <errno.h>
  23
  24 #include "dbus.h"
  25 #include "log.h"
  26 #include "dbus-manager.h"
  27 #include "strv.h"
  28
  29 #define INTROSPECTION_BEGIN                                             \
  30         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  31         "<node>"                                                        \
  32         " <interface name=\"org.freedesktop.systemd1.Manager\">"        \
  33         "  <method name=\"GetUnit\">"                                   \
  34         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>"           \
  35         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>"          \
  36         "  </method>"                                                   \
  37         "  <method name=\"LoadUnit\">"                                  \
  38         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>"           \
  39         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>"          \
  40         "  </method>"                                                   \
  41         "  <method name=\"GetJob\">"                                    \
  42         "   <arg name=\"id\" type=\"u\" direction=\"in\"/>"             \
  43         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>"           \
  44         "  </method>"                                                   \
  45         "  <method name=\"ClearJobs\"/>"                                \
  46         "  <method name=\"ListUnits\">"                                 \
  47         "   <arg name=\"units\" type=\"a(sssssouso)\" direction=\"out\"/>" \
  48         "  </method>"                                                   \
  49         "  <method name=\"ListJobs\">"                                  \
  50         "   <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>"  \
  51         "  </method>"                                                   \
  52         "  <method name=\"Subscribe\"/>"                                \
  53         "  <method name=\"Unsubscribe\"/>"                              \
  54         "  <method name=\"Dump\"/>"                                     \
  55         "  <method name=\"CreateSnapshot\">"                            \
  56         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>"           \
  57         "   <arg nane=\"cleanup\" type=\"b\" direction=\"in\"/>"        \
  58         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>"          \
  59         "  </method>"                                                   \
  60         "  <method name=\"Reload\"/>"                                   \
  61         "  <method name=\"Reexecute\"/>"                                \
  62         "  <method name=\"Exit\"/>"                                     \
  63         "  <method name=\"SetEnvironment\">"                            \
  64         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>"         \
  65         "  </method>"                                                   \
  66         "  <method name=\"UnsetEnvironment\">"                          \
  67         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>"         \
  68         "  </method>"                                                   \
  69         "  <signal name=\"UnitNew\">"                                   \
  70         "   <arg name=\"id\" type=\"s\"/>"                              \
  71         "   <arg name=\"unit\" type=\"o\"/>"                            \
  72         "  </signal>"                                                   \
  73         "  <signal name=\"UnitRemoved\">"                               \
  74         "   <arg name=\"id\" type=\"s\"/>"                              \
  75         "   <arg name=\"unit\" type=\"o\"/>"                            \
  76         "  </signal>"                                                   \
  77         "  <signal name=\"JobNew\">"                                    \
  78         "   <arg name=\"id\" type=\"u\"/>"                              \
  79         "   <arg name=\"job\" type=\"o\"/>"                             \
  80         "  </signal>"                                                   \
  81         "  <signal name=\"JobRemoved\">"                                \
  82         "   <arg name=\"id\" type=\"u\"/>"                              \
  83         "   <arg name=\"job\" type=\"o\"/>"                             \
  84         "   <arg name=\"success\" type=\"b\"/>"                         \
  85         "  </signal>"                                                   \
  86         "  <property name=\"Version\" type=\"s\" access=\"read\"/>"     \
  87         "  <property name=\"RunningAs\" type=\"s\" access=\"read\"/>"   \
  88         "  <property name=\"BootTimestamp\" type=\"t\" access=\"read\"/>" \
  89         "  <property name=\"LogLevel\" type=\"s\" access=\"read\"/>"    \
  90         "  <property name=\"LogTarget\" type=\"s\" access=\"read\"/>"   \
  91         "  <property name=\"NNames\" type=\"u\" access=\"read\"/>"      \
  92         "  <property name=\"NJobs\" type=\"u\" access=\"read\"/>"       \
  93         "  <property name=\"Environment\" type=\"as\" access=\"read\"/>" \
  94         " </interface>"                                                 \
  95         BUS_PROPERTIES_INTERFACE                                        \
  96         BUS_INTROSPECTABLE_INTERFACE
  97
  98 #define INTROSPECTION_END                                               \
  99         "</node>"
 100
 101 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
 102
 103 static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 104         const char *t;
 105
 106         assert(m);
 107         assert(i);
 108         assert(property);
 109
 110         t = log_target_to_string(log_get_target());
 111
 112         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 113                 return -ENOMEM;
 114
 115         return 0;
 116 }
 117
 118 static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 119         const char *t;
 120
 121         assert(m);
 122         assert(i);
 123         assert(property);
 124
 125         t = log_level_to_string(log_get_max_level());
 126
 127         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 128                 return -ENOMEM;
 129
 130         return 0;
 131 }
 132
 133 static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 134         uint32_t u;
 135
 136         assert(m);
 137         assert(i);
 138         assert(property);
 139
 140         u = hashmap_size(m->units);
 141
 142         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 143                 return -ENOMEM;
 144
 145         return 0;
 146 }
 147
 148 static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 149         uint32_t u;
 150
 151         assert(m);
 152         assert(i);
 153         assert(property);
 154
 155         u = hashmap_size(m->jobs);
 156
 157         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 158                 return -ENOMEM;
 159
 160         return 0;
 161 }
 162
 163 static DBusHandlerResult bus_manager_message_handler(DBusConnection  *connection, DBusMessage *message, void *data) {
 164         Manager *m = data;
 165
 166         const BusProperty properties[] = {
 167                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s", PACKAGE_STRING     },
 168                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s", &m->running_as     },
 169                 { "org.freedesktop.systemd1.Manager", "BootTimestamp", bus_property_append_uint64,    "t", &m->boot_timestamp },
 170                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s", NULL               },
 171                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s", NULL               },
 172                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u", NULL               },
 173                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u", NULL               },
 174                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment   },
 175                 { NULL, NULL, NULL, NULL, NULL }
 176         };
 177
 178         int r;
 179         DBusError error;
 180         DBusMessage *reply = NULL;
 181         char * path = NULL;
 182
 183         assert(connection);
 184         assert(message);
 185         assert(m);
 186
 187         dbus_error_init(&error);
 188
 189         log_debug("Got D-Bus request: %s.%s() on %s",
 190                   dbus_message_get_interface(message),
 191                   dbus_message_get_member(message),
 192                   dbus_message_get_path(message));
 193
 194         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 195                 const char *name;
 196                 Unit *u;
 197
 198                 if (!dbus_message_get_args(
 199                                     message,
 200                                     &error,
 201                                     DBUS_TYPE_STRING, &name,
 202                                     DBUS_TYPE_INVALID))
 203                         return bus_send_error_reply(m, message, &error, -EINVAL);
 204
 205                 if (!(u = manager_get_unit(m, name)))
 206                         return bus_send_error_reply(m, message, NULL, -ENOENT);
 207
 208                 if (!(reply = dbus_message_new_method_return(message)))
 209                         goto oom;
 210
 211                 if (!(path = unit_dbus_path(u)))
 212                         goto oom;
 213
 214                 if (!dbus_message_append_args(
 215                                     reply,
 216                                     DBUS_TYPE_OBJECT_PATH, &path,
 217                                     DBUS_TYPE_INVALID))
 218                         goto oom;
 219
 220         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 221                 const char *name;
 222                 Unit *u;
 223
 224                 if (!dbus_message_get_args(
 225                                     message,
 226                                     &error,
 227                                     DBUS_TYPE_STRING, &name,
 228                                     DBUS_TYPE_INVALID))
 229                         return bus_send_error_reply(m, message, &error, -EINVAL);
 230
 231                 if ((r = manager_load_unit(m, name, NULL, &u)) < 0)
 232                         return bus_send_error_reply(m, message, NULL, r);
 233
 234                 if (!(reply = dbus_message_new_method_return(message)))
 235                         goto oom;
 236
 237                 if (!(path = unit_dbus_path(u)))
 238                         goto oom;
 239
 240                 if (!dbus_message_append_args(
 241                                     reply,
 242                                     DBUS_TYPE_OBJECT_PATH, &path,
 243                                     DBUS_TYPE_INVALID))
 244                         goto oom;
 245
 246         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 247                 uint32_t id;
 248                 Job *j;
 249
 250                 if (!dbus_message_get_args(
 251                                     message,
 252                                     &error,
 253                                     DBUS_TYPE_UINT32, &id,
 254                                     DBUS_TYPE_INVALID))
 255                         return bus_send_error_reply(m, message, &error, -EINVAL);
 256
 257                 if (!(j = manager_get_job(m, id)))
 258                         return bus_send_error_reply(m, message, NULL, -ENOENT);
 259
 260                 if (!(reply = dbus_message_new_method_return(message)))
 261                         goto oom;
 262
 263                 if (!(path = job_dbus_path(j)))
 264                         goto oom;
 265
 266                 if (!dbus_message_append_args(
 267                                     reply,
 268                                     DBUS_TYPE_OBJECT_PATH, &path,
 269                                     DBUS_TYPE_INVALID))
 270                         goto oom;
 271
 272         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 273
 274                 manager_clear_jobs(m);
 275
 276                 if (!(reply = dbus_message_new_method_return(message)))
 277                         goto oom;
 278
 279         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 280                 DBusMessageIter iter, sub;
 281                 Iterator i;
 282                 Unit *u;
 283                 const char *k;
 284
 285                 if (!(reply = dbus_message_new_method_return(message)))
 286                         goto oom;
 287
 288                 dbus_message_iter_init_append(reply, &iter);
 289
 290                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sssssouso)", &sub))
 291                         goto oom;
 292
 293                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 294                         char *u_path, *j_path;
 295                         const char *description, *load_state, *active_state, *sub_state, *job_type;
 296                         DBusMessageIter sub2;
 297                         uint32_t job_id;
 298
 299                         if (k != u->meta.id)
 300                                 continue;
 301
 302                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 303                                 goto oom;
 304
 305                         description = unit_description(u);
 306                         load_state = unit_load_state_to_string(u->meta.load_state);
 307                         active_state = unit_active_state_to_string(unit_active_state(u));
 308                         sub_state = unit_sub_state_to_string(u);
 309
 310                         if (!(u_path = unit_dbus_path(u)))
 311                                 goto oom;
 312
 313                         if (u->meta.job) {
 314                                 job_id = (uint32_t) u->meta.job->id;
 315
 316                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 317                                         free(u_path);
 318                                         goto oom;
 319                                 }
 320
 321                                 job_type = job_type_to_string(u->meta.job->type);
 322                         } else {
 323                                 job_id = 0;
 324                                 j_path = u_path;
 325                                 job_type = "";
 326                         }
 327
 328                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 329                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 330                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 331                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 332                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 333                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 334                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 335                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &job_type) ||
 336                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 337                                 free(u_path);
 338                                 if (u->meta.job)
 339                                         free(j_path);
 340                                 goto oom;
 341                         }
 342
 343                         free(u_path);
 344                         if (u->meta.job)
 345                                 free(j_path);
 346
 347                         if (!dbus_message_iter_close_container(&sub, &sub2))
 348                                 goto oom;
 349                 }
 350
 351                 if (!dbus_message_iter_close_container(&iter, &sub))
 352                         goto oom;
 353
 354         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 355                 DBusMessageIter iter, sub;
 356                 Iterator i;
 357                 Job *j;
 358
 359                 if (!(reply = dbus_message_new_method_return(message)))
 360                         goto oom;
 361
 362                 dbus_message_iter_init_append(reply, &iter);
 363
 364                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 365                         goto oom;
 366
 367                 HASHMAP_FOREACH(j, m->jobs, i) {
 368                         char *u_path, *j_path;
 369                         const char *state, *type;
 370                         uint32_t id;
 371                         DBusMessageIter sub2;
 372
 373                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 374                                 goto oom;
 375
 376                         id = (uint32_t) j->id;
 377                         state = job_state_to_string(j->state);
 378                         type = job_type_to_string(j->type);
 379
 380                         if (!(j_path = job_dbus_path(j)))
 381                                 goto oom;
 382
 383                         if (!(u_path = unit_dbus_path(j->unit))) {
 384                                 free(j_path);
 385                                 goto oom;
 386                         }
 387
 388                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 389                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 390                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 391                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 392                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 393                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 394                                 free(j_path);
 395                                 free(u_path);
 396                                 goto oom;
 397                         }
 398
 399                         free(j_path);
 400                         free(u_path);
 401
 402                         if (!dbus_message_iter_close_container(&sub, &sub2))
 403                                 goto oom;
 404                 }
 405
 406                 if (!dbus_message_iter_close_container(&iter, &sub))
 407                         goto oom;
 408
 409         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 410                 char *client;
 411
 412                 if (!(client = strdup(dbus_message_get_sender(message))))
 413                         goto oom;
 414
 415                 r = set_put(m->subscribed, client);
 416
 417                 if (r < 0)
 418                         return bus_send_error_reply(m, message, NULL, r);
 419
 420                 if (!(reply = dbus_message_new_method_return(message)))
 421                         goto oom;
 422
 423         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 424                 char *client;
 425
 426                 if (!(client = set_remove(m->subscribed, (char*) dbus_message_get_sender(message))))
 427                         return bus_send_error_reply(m, message, NULL, -ENOENT);
 428
 429                 free(client);
 430
 431                 if (!(reply = dbus_message_new_method_return(message)))
 432                         goto oom;
 433
 434         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 435                 FILE *f;
 436                 char *dump = NULL;
 437                 size_t size;
 438
 439                 if (!(reply = dbus_message_new_method_return(message)))
 440                         goto oom;
 441
 442                 if (!(f = open_memstream(&dump, &size)))
 443                         goto oom;
 444
 445                 manager_dump_units(m, f, NULL);
 446                 manager_dump_jobs(m, f, NULL);
 447
 448                 if (ferror(f)) {
 449                         fclose(f);
 450                         free(dump);
 451                         goto oom;
 452                 }
 453
 454                 fclose(f);
 455
 456                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 457                         free(dump);
 458                         goto oom;
 459                 }
 460
 461                 free(dump);
 462         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 463                 const char *name;
 464                 dbus_bool_t cleanup;
 465                 Snapshot *s;
 466
 467                 if (!dbus_message_get_args(
 468                                     message,
 469                                     &error,
 470                                     DBUS_TYPE_STRING, &name,
 471                                     DBUS_TYPE_BOOLEAN, &cleanup,
 472                                     DBUS_TYPE_INVALID))
 473                         return bus_send_error_reply(m, message, &error, -EINVAL);
 474
 475                 if (name && name[0] == 0)
 476                         name = NULL;
 477
 478                 if ((r = snapshot_create(m, name, cleanup, &s)) < 0)
 479                         return bus_send_error_reply(m, message, NULL, r);
 480
 481                 if (!(reply = dbus_message_new_method_return(message)))
 482                         goto oom;
 483
 484                 if (!(path = unit_dbus_path(UNIT(s))))
 485                         goto oom;
 486
 487                 if (!dbus_message_append_args(
 488                                     reply,
 489                                     DBUS_TYPE_OBJECT_PATH, &path,
 490                                     DBUS_TYPE_INVALID))
 491                         goto oom;
 492
 493         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 494                 char *introspection = NULL;
 495                 FILE *f;
 496                 Iterator i;
 497                 Unit *u;
 498                 Job *j;
 499                 const char *k;
 500                 size_t size;
 501
 502                 if (!(reply = dbus_message_new_method_return(message)))
 503                         goto oom;
 504
 505                 /* We roll our own introspection code here, instead of
 506                  * relying on bus_default_message_handler() because we
 507                  * need to generate our introspection string
 508                  * dynamically. */
 509
 510                 if (!(f = open_memstream(&introspection, &size)))
 511                         goto oom;
 512
 513                 fputs(INTROSPECTION_BEGIN, f);
 514
 515                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 516                         char *p;
 517
 518                         if (k != u->meta.id)
 519                                 continue;
 520
 521                         if (!(p = bus_path_escape(k))) {
 522                                 fclose(f);
 523                                 free(introspection);
 524                                 goto oom;
 525                         }
 526
 527                         fprintf(f, "<node name=\"unit/%s\"/>", p);
 528                         free(p);
 529                 }
 530
 531                 HASHMAP_FOREACH(j, m->jobs, i)
 532                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
 533
 534                 fputs(INTROSPECTION_END, f);
 535
 536                 if (ferror(f)) {
 537                         fclose(f);
 538                         free(introspection);
 539                         goto oom;
 540                 }
 541
 542                 fclose(f);
 543
 544                 if (!introspection)
 545                         goto oom;
 546
 547                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
 548                         free(introspection);
 549                         goto oom;
 550                 }
 551
 552                 free(introspection);
 553
 554         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
 555
 556                 assert(!m->queued_message);
 557
 558                 /* Instead of sending the reply back right away, we
 559                  * just remember that we need to and then send it
 560                  * after the reload is finished. That way the caller
 561                  * knows when the reload finished. */
 562
 563                 if (!(m->queued_message = dbus_message_new_method_return(message)))
 564                         goto oom;
 565
 566                 m->exit_code = MANAGER_RELOAD;
 567
 568         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
 569
 570                 if (!(reply = dbus_message_new_method_return(message)))
 571                         goto oom;
 572
 573                 m->exit_code = MANAGER_REEXECUTE;
 574
 575         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
 576
 577                 if (m->running_as == MANAGER_INIT)
 578                         return bus_send_error_reply(m, message, NULL, -ENOTSUP);
 579
 580                 if (!(reply = dbus_message_new_method_return(message)))
 581                         goto oom;
 582
 583                 m->exit_code = MANAGER_EXIT;
 584
 585         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
 586                 char **l = NULL, **e = NULL;
 587
 588                 if ((r = bus_parse_strv(message, &l)) < 0) {
 589                         if (r == -ENOMEM)
 590                                 goto oom;
 591
 592                         return bus_send_error_reply(m, message, NULL, r);
 593                 }
 594
 595                 e = strv_env_merge(m->environment, l, NULL);
 596                 strv_free(l);
 597
 598                 if (!e)
 599                         goto oom;
 600
 601                 if (!(reply = dbus_message_new_method_return(message))) {
 602                         strv_free(e);
 603                         goto oom;
 604                 }
 605
 606                 strv_free(m->environment);
 607                 m->environment = e;
 608
 609         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
 610                 char **l = NULL, **e = NULL;
 611
 612                 if ((r = bus_parse_strv(message, &l)) < 0) {
 613                         if (r == -ENOMEM)
 614                                 goto oom;
 615
 616                         return bus_send_error_reply(m, message, NULL, r);
 617                 }
 618
 619                 e = strv_env_delete(m->environment, l, NULL);
 620                 strv_free(l);
 621
 622                 if (!e)
 623                         goto oom;
 624
 625                 if (!(reply = dbus_message_new_method_return(message)))
 626                         goto oom;
 627
 628                 strv_free(m->environment);
 629                 m->environment = e;
 630
 631         } else
 632                 return bus_default_message_handler(m, message, NULL, properties);
 633
 634         free(path);
 635
 636         if (reply) {
 637                 if (!dbus_connection_send(connection, reply, NULL))
 638                         goto oom;
 639
 640                 dbus_message_unref(reply);
 641         }
 642
 643         return DBUS_HANDLER_RESULT_HANDLED;
 644
 645 oom:
 646         free(path);
 647
 648         if (reply)
 649                 dbus_message_unref(reply);
 650
 651         dbus_error_free(&error);
 652
 653         return DBUS_HANDLER_RESULT_NEED_MEMORY;
 654 }
 655
 656 const DBusObjectPathVTable bus_manager_vtable = {
 657         .message_function = bus_manager_message_handler
 658 };