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 BUS_MANAGER_INTERFACE                                           \
  30         " <interface name=\"org.freedesktop.systemd1.Manager\">\n"      \
  31         "  <method name=\"GetUnit\">\n"                                 \
  32         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  33         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  34         "  </method>\n"                                                 \
  35         "  <method name=\"LoadUnit\">\n"                                \
  36         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  37         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  38         "  </method>\n"                                                 \
  39         "  <method name=\"StartUnit\">\n"                               \
  40         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  41         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  42         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  43         "  </method>\n"                                                 \
  44         "  <method name=\"StopUnit\">\n"                                \
  45         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  46         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  47         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  48         "  </method>\n"                                                 \
  49         "  <method name=\"ReloadUnit\">\n"                              \
  50         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  51         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  52         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  53         "  </method>\n"                                                 \
  54         "  <method name=\"RestartUnit\">\n"                             \
  55         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  56         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  57         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  58         "  </method>\n"                                                 \
  59         "  <method name=\"TryRestartUnit\">\n"                          \
  60         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  61         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  62         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  63         "  </method>\n"                                                 \
  64         "  <method name=\"GetJob\">\n"                                  \
  65         "   <arg name=\"id\" type=\"u\" direction=\"in\"/>\n"           \
  66         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  67         "  </method>\n"                                                 \
  68         "  <method name=\"ClearJobs\"/>\n"                              \
  69         "  <method name=\"ListUnits\">\n"                               \
  70         "   <arg name=\"units\" type=\"a(sssssouso)\" direction=\"out\"/>\n" \
  71         "  </method>\n"                                                 \
  72         "  <method name=\"ListJobs\">\n"                                \
  73         "   <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
  74         "  </method>\n"                                                 \
  75         "  <method name=\"Subscribe\"/>\n"                              \
  76         "  <method name=\"Unsubscribe\"/>\n"                            \
  77         "  <method name=\"Dump\"/>\n"                                   \
  78         "  <method name=\"CreateSnapshot\">\n"                          \
  79         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  80         "   <arg nane=\"cleanup\" type=\"b\" direction=\"in\"/>\n"      \
  81         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  82         "  </method>\n"                                                 \
  83         "  <method name=\"Reload\"/>\n"                                 \
  84         "  <method name=\"Reexecute\"/>\n"                              \
  85         "  <method name=\"Exit\"/>\n"                                   \
  86         "  <method name=\"SetEnvironment\">\n"                          \
  87         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
  88         "  </method>\n"                                                 \
  89         "  <method name=\"UnsetEnvironment\">\n"                        \
  90         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
  91         "  </method>\n"                                                 \
  92         "  <signal name=\"UnitNew\">\n"                                 \
  93         "   <arg name=\"id\" type=\"s\"/>\n"                            \
  94         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
  95         "  </signal>\n"                                                 \
  96         "  <signal name=\"UnitRemoved\">\n"                             \
  97         "   <arg name=\"id\" type=\"s\"/>\n"                            \
  98         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
  99         "  </signal>\n"                                                 \
 100         "  <signal name=\"JobNew\">\n"                                  \
 101         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 102         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 103         "  </signal>\n"                                                 \
 104         "  <signal name=\"JobRemoved\">\n"                              \
 105         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 106         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 107         "   <arg name=\"success\" type=\"b\"/>\n"                       \
 108         "  </signal>"                                                   \
 109         "  <property name=\"Version\" type=\"s\" access=\"read\"/>\n"   \
 110         "  <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
 111         "  <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
 112         "  <property name=\"LogLevel\" type=\"s\" access=\"read\"/>\n"  \
 113         "  <property name=\"LogTarget\" type=\"s\" access=\"read\"/>\n" \
 114         "  <property name=\"NNames\" type=\"u\" access=\"read\"/>\n"    \
 115         "  <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n"     \
 116         "  <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
 117         "  <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
 118         "  <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
 119         "  <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
 120         "  <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
 121         "  <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n" \
 122         "  <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
 123         " </interface>\n"
 124
 125 #define INTROSPECTION_BEGIN                                             \
 126         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
 127         "<node>\n"                                                      \
 128         BUS_MANAGER_INTERFACE                                           \
 129         BUS_PROPERTIES_INTERFACE                                        \
 130         BUS_INTROSPECTABLE_INTERFACE
 131
 132 #define INTROSPECTION_END                                               \
 133         "</node>\n"
 134
 135 const char bus_manager_interface[] = BUS_MANAGER_INTERFACE;
 136
 137 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
 138
 139 static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 140         const char *t;
 141
 142         assert(m);
 143         assert(i);
 144         assert(property);
 145
 146         t = log_target_to_string(log_get_target());
 147
 148         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 149                 return -ENOMEM;
 150
 151         return 0;
 152 }
 153
 154 static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 155         const char *t;
 156
 157         assert(m);
 158         assert(i);
 159         assert(property);
 160
 161         t = log_level_to_string(log_get_max_level());
 162
 163         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 164                 return -ENOMEM;
 165
 166         return 0;
 167 }
 168
 169 static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 170         uint32_t u;
 171
 172         assert(m);
 173         assert(i);
 174         assert(property);
 175
 176         u = hashmap_size(m->units);
 177
 178         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 179                 return -ENOMEM;
 180
 181         return 0;
 182 }
 183
 184 static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 185         uint32_t u;
 186
 187         assert(m);
 188         assert(i);
 189         assert(property);
 190
 191         u = hashmap_size(m->jobs);
 192
 193         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 194                 return -ENOMEM;
 195
 196         return 0;
 197 }
 198
 199 static const char *message_get_sender_with_fallback(DBusMessage *m) {
 200         const char *s;
 201
 202         assert(m);
 203
 204         if ((s = dbus_message_get_sender(m)))
 205                 return s;
 206
 207         /* When the message came in from a direct connection the
 208          * message will have no sender. We fix that here. */
 209
 210         return ":no-sender";
 211 }
 212
 213 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 214         Manager *m = data;
 215
 216         const BusProperty properties[] = {
 217                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s",  PACKAGE_STRING     },
 218                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s",  &m->running_as     },
 219                 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t",  &m->startup_timestamp.realtime },
 220                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s",  NULL               },
 221                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s",  NULL               },
 222                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u",  NULL               },
 223                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u",  NULL               },
 224                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment     },
 225                 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn",  bus_property_append_bool,      "b",  &m->confirm_spawn  },
 226                 { "org.freedesktop.systemd1.Manager", "ShowStatus",    bus_property_append_bool,      "b",  &m->show_status    },
 227                 { "org.freedesktop.systemd1.Manager", "UnitPath",      bus_property_append_strv,      "as", m->lookup_paths.unit_path },
 228                 { "org.freedesktop.systemd1.Manager", "SysVInitPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvinit_path },
 229                 { "org.freedesktop.systemd1.Manager", "SysVRcndPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvrcnd_path },
 230                 { "org.freedesktop.systemd1.Manager", "NotifySocket",  bus_property_append_string,    "s",  m->notify_socket   },
 231                 { NULL, NULL, NULL, NULL, NULL }
 232         };
 233
 234         int r;
 235         DBusError error;
 236         DBusMessage *reply = NULL;
 237         char * path = NULL;
 238         JobType job_type = _JOB_TYPE_INVALID;
 239
 240         assert(connection);
 241         assert(message);
 242         assert(m);
 243
 244         dbus_error_init(&error);
 245
 246         log_debug("Got D-Bus request: %s.%s() on %s",
 247                   dbus_message_get_interface(message),
 248                   dbus_message_get_member(message),
 249                   dbus_message_get_path(message));
 250
 251         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 252                 const char *name;
 253                 Unit *u;
 254
 255                 if (!dbus_message_get_args(
 256                                     message,
 257                                     &error,
 258                                     DBUS_TYPE_STRING, &name,
 259                                     DBUS_TYPE_INVALID))
 260                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 261
 262                 if (!(u = manager_get_unit(m, name)))
 263                         return bus_send_error_reply(m, connection, message, NULL, -ENOENT);
 264
 265                 if (!(reply = dbus_message_new_method_return(message)))
 266                         goto oom;
 267
 268                 if (!(path = unit_dbus_path(u)))
 269                         goto oom;
 270
 271                 if (!dbus_message_append_args(
 272                                     reply,
 273                                     DBUS_TYPE_OBJECT_PATH, &path,
 274                                     DBUS_TYPE_INVALID))
 275                         goto oom;
 276
 277         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 278                 const char *name;
 279                 Unit *u;
 280
 281                 if (!dbus_message_get_args(
 282                                     message,
 283                                     &error,
 284                                     DBUS_TYPE_STRING, &name,
 285                                     DBUS_TYPE_INVALID))
 286                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 287
 288                 if ((r = manager_load_unit(m, name, NULL, &u)) < 0)
 289                         return bus_send_error_reply(m, connection, message, NULL, r);
 290
 291                 if (!(reply = dbus_message_new_method_return(message)))
 292                         goto oom;
 293
 294                 if (!(path = unit_dbus_path(u)))
 295                         goto oom;
 296
 297                 if (!dbus_message_append_args(
 298                                     reply,
 299                                     DBUS_TYPE_OBJECT_PATH, &path,
 300                                     DBUS_TYPE_INVALID))
 301                         goto oom;
 302
 303         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 304                 job_type = JOB_START;
 305         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 306                 job_type = JOB_STOP;
 307         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 308                 job_type = JOB_RELOAD;
 309         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 310                 job_type = JOB_RESTART;
 311         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 312                 job_type = JOB_TRY_RESTART;
 313         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 314                 uint32_t id;
 315                 Job *j;
 316
 317                 if (!dbus_message_get_args(
 318                                     message,
 319                                     &error,
 320                                     DBUS_TYPE_UINT32, &id,
 321                                     DBUS_TYPE_INVALID))
 322                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 323
 324                 if (!(j = manager_get_job(m, id)))
 325                         return bus_send_error_reply(m, connection, message, NULL, -ENOENT);
 326
 327                 if (!(reply = dbus_message_new_method_return(message)))
 328                         goto oom;
 329
 330                 if (!(path = job_dbus_path(j)))
 331                         goto oom;
 332
 333                 if (!dbus_message_append_args(
 334                                     reply,
 335                                     DBUS_TYPE_OBJECT_PATH, &path,
 336                                     DBUS_TYPE_INVALID))
 337                         goto oom;
 338
 339         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 340
 341                 manager_clear_jobs(m);
 342
 343                 if (!(reply = dbus_message_new_method_return(message)))
 344                         goto oom;
 345
 346         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 347                 DBusMessageIter iter, sub;
 348                 Iterator i;
 349                 Unit *u;
 350                 const char *k;
 351
 352                 if (!(reply = dbus_message_new_method_return(message)))
 353                         goto oom;
 354
 355                 dbus_message_iter_init_append(reply, &iter);
 356
 357                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sssssouso)", &sub))
 358                         goto oom;
 359
 360                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 361                         char *u_path, *j_path;
 362                         const char *description, *load_state, *active_state, *sub_state, *sjob_type;
 363                         DBusMessageIter sub2;
 364                         uint32_t job_id;
 365
 366                         if (k != u->meta.id)
 367                                 continue;
 368
 369                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 370                                 goto oom;
 371
 372                         description = unit_description(u);
 373                         load_state = unit_load_state_to_string(u->meta.load_state);
 374                         active_state = unit_active_state_to_string(unit_active_state(u));
 375                         sub_state = unit_sub_state_to_string(u);
 376
 377                         if (!(u_path = unit_dbus_path(u)))
 378                                 goto oom;
 379
 380                         if (u->meta.job) {
 381                                 job_id = (uint32_t) u->meta.job->id;
 382
 383                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 384                                         free(u_path);
 385                                         goto oom;
 386                                 }
 387
 388                                 sjob_type = job_type_to_string(u->meta.job->type);
 389                         } else {
 390                                 job_id = 0;
 391                                 j_path = u_path;
 392                                 sjob_type = "";
 393                         }
 394
 395                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 396                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 397                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 398                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 399                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 400                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 401                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 402                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 403                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 404                                 free(u_path);
 405                                 if (u->meta.job)
 406                                         free(j_path);
 407                                 goto oom;
 408                         }
 409
 410                         free(u_path);
 411                         if (u->meta.job)
 412                                 free(j_path);
 413
 414                         if (!dbus_message_iter_close_container(&sub, &sub2))
 415                                 goto oom;
 416                 }
 417
 418                 if (!dbus_message_iter_close_container(&iter, &sub))
 419                         goto oom;
 420
 421         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 422                 DBusMessageIter iter, sub;
 423                 Iterator i;
 424                 Job *j;
 425
 426                 if (!(reply = dbus_message_new_method_return(message)))
 427                         goto oom;
 428
 429                 dbus_message_iter_init_append(reply, &iter);
 430
 431                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 432                         goto oom;
 433
 434                 HASHMAP_FOREACH(j, m->jobs, i) {
 435                         char *u_path, *j_path;
 436                         const char *state, *type;
 437                         uint32_t id;
 438                         DBusMessageIter sub2;
 439
 440                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 441                                 goto oom;
 442
 443                         id = (uint32_t) j->id;
 444                         state = job_state_to_string(j->state);
 445                         type = job_type_to_string(j->type);
 446
 447                         if (!(j_path = job_dbus_path(j)))
 448                                 goto oom;
 449
 450                         if (!(u_path = unit_dbus_path(j->unit))) {
 451                                 free(j_path);
 452                                 goto oom;
 453                         }
 454
 455                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 456                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 457                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 458                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 459                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 460                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 461                                 free(j_path);
 462                                 free(u_path);
 463                                 goto oom;
 464                         }
 465
 466                         free(j_path);
 467                         free(u_path);
 468
 469                         if (!dbus_message_iter_close_container(&sub, &sub2))
 470                                 goto oom;
 471                 }
 472
 473                 if (!dbus_message_iter_close_container(&iter, &sub))
 474                         goto oom;
 475
 476         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 477                 char *client;
 478                 Set *s;
 479
 480                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 481                         if (!(s = set_new(string_hash_func, string_compare_func)))
 482                                 goto oom;
 483
 484                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 485                                 set_free(s);
 486                                 goto oom;
 487                         }
 488                 }
 489
 490                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 491                         goto oom;
 492
 493                 if ((r = set_put(s, client)) < 0) {
 494                         free(client);
 495                         return bus_send_error_reply(m, connection, message, NULL, r);
 496                 }
 497
 498                 if (!(reply = dbus_message_new_method_return(message)))
 499                         goto oom;
 500
 501         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 502                 char *client;
 503
 504                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message))))
 505                         return bus_send_error_reply(m, connection, message, NULL, -ENOENT);
 506
 507                 free(client);
 508
 509                 if (!(reply = dbus_message_new_method_return(message)))
 510                         goto oom;
 511
 512         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 513                 FILE *f;
 514                 char *dump = NULL;
 515                 size_t size;
 516
 517                 if (!(reply = dbus_message_new_method_return(message)))
 518                         goto oom;
 519
 520                 if (!(f = open_memstream(&dump, &size)))
 521                         goto oom;
 522
 523                 manager_dump_units(m, f, NULL);
 524                 manager_dump_jobs(m, f, NULL);
 525
 526                 if (ferror(f)) {
 527                         fclose(f);
 528                         free(dump);
 529                         goto oom;
 530                 }
 531
 532                 fclose(f);
 533
 534                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 535                         free(dump);
 536                         goto oom;
 537                 }
 538
 539                 free(dump);
 540         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 541                 const char *name;
 542                 dbus_bool_t cleanup;
 543                 Snapshot *s;
 544
 545                 if (!dbus_message_get_args(
 546                                     message,
 547                                     &error,
 548                                     DBUS_TYPE_STRING, &name,
 549                                     DBUS_TYPE_BOOLEAN, &cleanup,
 550                                     DBUS_TYPE_INVALID))
 551                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 552
 553                 if (name && name[0] == 0)
 554                         name = NULL;
 555
 556                 if ((r = snapshot_create(m, name, cleanup, &s)) < 0)
 557                         return bus_send_error_reply(m, connection, message, NULL, r);
 558
 559                 if (!(reply = dbus_message_new_method_return(message)))
 560                         goto oom;
 561
 562                 if (!(path = unit_dbus_path(UNIT(s))))
 563                         goto oom;
 564
 565                 if (!dbus_message_append_args(
 566                                     reply,
 567                                     DBUS_TYPE_OBJECT_PATH, &path,
 568                                     DBUS_TYPE_INVALID))
 569                         goto oom;
 570
 571         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 572                 char *introspection = NULL;
 573                 FILE *f;
 574                 Iterator i;
 575                 Unit *u;
 576                 Job *j;
 577                 const char *k;
 578                 size_t size;
 579
 580                 if (!(reply = dbus_message_new_method_return(message)))
 581                         goto oom;
 582
 583                 /* We roll our own introspection code here, instead of
 584                  * relying on bus_default_message_handler() because we
 585                  * need to generate our introspection string
 586                  * dynamically. */
 587
 588                 if (!(f = open_memstream(&introspection, &size)))
 589                         goto oom;
 590
 591                 fputs(INTROSPECTION_BEGIN, f);
 592
 593                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 594                         char *p;
 595
 596                         if (k != u->meta.id)
 597                                 continue;
 598
 599                         if (!(p = bus_path_escape(k))) {
 600                                 fclose(f);
 601                                 free(introspection);
 602                                 goto oom;
 603                         }
 604
 605                         fprintf(f, "<node name=\"unit/%s\"/>", p);
 606                         free(p);
 607                 }
 608
 609                 HASHMAP_FOREACH(j, m->jobs, i)
 610                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
 611
 612                 fputs(INTROSPECTION_END, f);
 613
 614                 if (ferror(f)) {
 615                         fclose(f);
 616                         free(introspection);
 617                         goto oom;
 618                 }
 619
 620                 fclose(f);
 621
 622                 if (!introspection)
 623                         goto oom;
 624
 625                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
 626                         free(introspection);
 627                         goto oom;
 628                 }
 629
 630                 free(introspection);
 631
 632         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
 633
 634                 assert(!m->queued_message);
 635
 636                 /* Instead of sending the reply back right away, we
 637                  * just remember that we need to and then send it
 638                  * after the reload is finished. That way the caller
 639                  * knows when the reload finished. */
 640
 641                 if (!(m->queued_message = dbus_message_new_method_return(message)))
 642                         goto oom;
 643
 644                 m->queued_message_connection = connection;
 645                 m->exit_code = MANAGER_RELOAD;
 646
 647         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
 648
 649                 if (!(reply = dbus_message_new_method_return(message)))
 650                         goto oom;
 651
 652                 m->exit_code = MANAGER_REEXECUTE;
 653
 654         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
 655
 656                 if (m->running_as == MANAGER_SYSTEM)
 657                         return bus_send_error_reply(m, connection, message, NULL, -ENOTSUP);
 658
 659                 if (!(reply = dbus_message_new_method_return(message)))
 660                         goto oom;
 661
 662                 m->exit_code = MANAGER_EXIT;
 663
 664         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
 665                 char **l = NULL, **e = NULL;
 666
 667                 if ((r = bus_parse_strv(message, &l)) < 0) {
 668                         if (r == -ENOMEM)
 669                                 goto oom;
 670
 671                         return bus_send_error_reply(m, connection, message, NULL, r);
 672                 }
 673
 674                 e = strv_env_merge(2, m->environment, l);
 675                 strv_free(l);
 676
 677                 if (!e)
 678                         goto oom;
 679
 680                 if (!(reply = dbus_message_new_method_return(message))) {
 681                         strv_free(e);
 682                         goto oom;
 683                 }
 684
 685                 strv_free(m->environment);
 686                 m->environment = e;
 687
 688         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
 689                 char **l = NULL, **e = NULL;
 690
 691                 if ((r = bus_parse_strv(message, &l)) < 0) {
 692                         if (r == -ENOMEM)
 693                                 goto oom;
 694
 695                         return bus_send_error_reply(m, connection, message, NULL, r);
 696                 }
 697
 698                 e = strv_env_delete(m->environment, 1, l);
 699                 strv_free(l);
 700
 701                 if (!e)
 702                         goto oom;
 703
 704                 if (!(reply = dbus_message_new_method_return(message)))
 705                         goto oom;
 706
 707                 strv_free(m->environment);
 708                 m->environment = e;
 709
 710         } else
 711                 return bus_default_message_handler(m, connection, message, NULL, properties);
 712
 713
 714         if (job_type != _JOB_TYPE_INVALID) {
 715                 const char *name, *smode;
 716                 JobMode mode;
 717                 Job *j;
 718                 Unit *u;
 719
 720                 if (!dbus_message_get_args(
 721                                     message,
 722                                     &error,
 723                                     DBUS_TYPE_STRING, &name,
 724                                     DBUS_TYPE_STRING, &smode,
 725                                     DBUS_TYPE_INVALID))
 726                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 727
 728                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID)
 729                         return bus_send_error_reply(m, connection, message, NULL, -EINVAL);
 730
 731                 if ((r = manager_load_unit(m, name, NULL, &u)) < 0)
 732                         return bus_send_error_reply(m, connection, message, NULL, r);
 733
 734                 if (job_type == JOB_START && u->meta.only_by_dependency)
 735                         return bus_send_error_reply(m, connection, message, NULL, -EPERM);
 736
 737                 if ((r = manager_add_job(m, job_type, u, mode, true, &j)) < 0)
 738                         return bus_send_error_reply(m, connection, message, NULL, r);
 739
 740                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
 741                         goto oom;
 742
 743                 j->bus = connection;
 744
 745                 if (!(reply = dbus_message_new_method_return(message)))
 746                         goto oom;
 747
 748                 if (!(path = job_dbus_path(j)))
 749                         goto oom;
 750
 751                 if (!dbus_message_append_args(
 752                                     reply,
 753                                     DBUS_TYPE_OBJECT_PATH, &path,
 754                                     DBUS_TYPE_INVALID))
 755                         goto oom;
 756         }
 757
 758         free(path);
 759
 760         if (reply) {
 761                 if (!dbus_connection_send(connection, reply, NULL))
 762                         goto oom;
 763
 764                 dbus_message_unref(reply);
 765         }
 766
 767         return DBUS_HANDLER_RESULT_HANDLED;
 768
 769 oom:
 770         free(path);
 771
 772         if (reply)
 773                 dbus_message_unref(reply);
 774
 775         dbus_error_free(&error);
 776
 777         return DBUS_HANDLER_RESULT_NEED_MEMORY;
 778 }
 779
 780 const DBusObjectPathVTable bus_manager_vtable = {
 781         .message_function = bus_manager_message_handler
 782 };