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[thirdparty/systemd.git] / src / dbus-manager.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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 #include "bus-errors.h"
29
30 #define BUS_MANAGER_INTERFACE \
31 " <interface name=\"org.freedesktop.systemd1.Manager\">\n" \
32 " <method name=\"GetUnit\">\n" \
33 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
34 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
35 " </method>\n" \
36 " <method name=\"GetUnitByPID\">\n" \
37 " <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \
38 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
39 " </method>\n" \
40 " <method name=\"LoadUnit\">\n" \
41 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
42 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
43 " </method>\n" \
44 " <method name=\"StartUnit\">\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=\"StopUnit\">\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=\"ReloadUnit\">\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=\"RestartUnit\">\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=\"TryRestartUnit\">\n" \
65 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
66 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
67 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
68 " </method>\n" \
69 " <method name=\"ReloadOrRestartUnit\">\n" \
70 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
71 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
72 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
73 " </method>\n" \
74 " <method name=\"ReloadOrTryRestartUnit\">\n" \
75 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
76 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
77 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
78 " </method>\n" \
79 " <method name=\"ResetMaintenanceUnit\">\n" \
80 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
81 " </method>\n" \
82 " <method name=\"GetJob\">\n" \
83 " <arg name=\"id\" type=\"u\" direction=\"in\"/>\n" \
84 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
85 " </method>\n" \
86 " <method name=\"ClearJobs\"/>\n" \
87 " <method name=\"ResetMaintenance\"/>\n" \
88 " <method name=\"ListUnits\">\n" \
89 " <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
90 " </method>\n" \
91 " <method name=\"ListJobs\">\n" \
92 " <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
93 " </method>\n" \
94 " <method name=\"Subscribe\"/>\n" \
95 " <method name=\"Unsubscribe\"/>\n" \
96 " <method name=\"Dump\"/>\n" \
97 " <method name=\"CreateSnapshot\">\n" \
98 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
99 " <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n" \
100 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
101 " </method>\n" \
102 " <method name=\"Reload\"/>\n" \
103 " <method name=\"Reexecute\"/>\n" \
104 " <method name=\"Exit\"/>\n" \
105 " <method name=\"SetEnvironment\">\n" \
106 " <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \
107 " </method>\n" \
108 " <method name=\"UnsetEnvironment\">\n" \
109 " <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \
110 " </method>\n" \
111 " <signal name=\"UnitNew\">\n" \
112 " <arg name=\"id\" type=\"s\"/>\n" \
113 " <arg name=\"unit\" type=\"o\"/>\n" \
114 " </signal>\n" \
115 " <signal name=\"UnitRemoved\">\n" \
116 " <arg name=\"id\" type=\"s\"/>\n" \
117 " <arg name=\"unit\" type=\"o\"/>\n" \
118 " </signal>\n" \
119 " <signal name=\"JobNew\">\n" \
120 " <arg name=\"id\" type=\"u\"/>\n" \
121 " <arg name=\"job\" type=\"o\"/>\n" \
122 " </signal>\n" \
123 " <signal name=\"JobRemoved\">\n" \
124 " <arg name=\"id\" type=\"u\"/>\n" \
125 " <arg name=\"job\" type=\"o\"/>\n" \
126 " <arg name=\"success\" type=\"b\"/>\n" \
127 " </signal>" \
128 " <property name=\"Version\" type=\"s\" access=\"read\"/>\n" \
129 " <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
130 " <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
131 " <property name=\"LogLevel\" type=\"s\" access=\"read\"/>\n" \
132 " <property name=\"LogTarget\" type=\"s\" access=\"read\"/>\n" \
133 " <property name=\"NNames\" type=\"u\" access=\"read\"/>\n" \
134 " <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n" \
135 " <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
136 " <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
137 " <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
138 " <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
139 " <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
140 " <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
141 " <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n" \
142 " <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
143 " <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
144 " </interface>\n"
145
146 #define INTROSPECTION_BEGIN \
147 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
148 "<node>\n" \
149 BUS_MANAGER_INTERFACE \
150 BUS_PROPERTIES_INTERFACE \
151 BUS_INTROSPECTABLE_INTERFACE
152
153 #define INTROSPECTION_END \
154 "</node>\n"
155
156 const char bus_manager_interface[] = BUS_MANAGER_INTERFACE;
157
158 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
159
160 static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
161 const char *t;
162
163 assert(m);
164 assert(i);
165 assert(property);
166
167 t = log_target_to_string(log_get_target());
168
169 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
170 return -ENOMEM;
171
172 return 0;
173 }
174
175 static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
176 const char *t;
177
178 assert(m);
179 assert(i);
180 assert(property);
181
182 t = log_level_to_string(log_get_max_level());
183
184 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
185 return -ENOMEM;
186
187 return 0;
188 }
189
190 static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
191 uint32_t u;
192
193 assert(m);
194 assert(i);
195 assert(property);
196
197 u = hashmap_size(m->units);
198
199 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
200 return -ENOMEM;
201
202 return 0;
203 }
204
205 static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
206 uint32_t u;
207
208 assert(m);
209 assert(i);
210 assert(property);
211
212 u = hashmap_size(m->jobs);
213
214 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
215 return -ENOMEM;
216
217 return 0;
218 }
219
220 static const char *message_get_sender_with_fallback(DBusMessage *m) {
221 const char *s;
222
223 assert(m);
224
225 if ((s = dbus_message_get_sender(m)))
226 return s;
227
228 /* When the message came in from a direct connection the
229 * message will have no sender. We fix that here. */
230
231 return ":no-sender";
232 }
233
234 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
235 Manager *m = data;
236
237 const BusProperty properties[] = {
238 { "org.freedesktop.systemd1.Manager", "Version", bus_property_append_string, "s", PACKAGE_STRING },
239 { "org.freedesktop.systemd1.Manager", "RunningAs", bus_manager_append_running_as, "s", &m->running_as },
240 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t", &m->startup_timestamp.realtime },
241 { "org.freedesktop.systemd1.Manager", "LogLevel", bus_manager_append_log_level, "s", NULL },
242 { "org.freedesktop.systemd1.Manager", "LogTarget", bus_manager_append_log_target, "s", NULL },
243 { "org.freedesktop.systemd1.Manager", "NNames", bus_manager_append_n_names, "u", NULL },
244 { "org.freedesktop.systemd1.Manager", "NJobs", bus_manager_append_n_jobs, "u", NULL },
245 { "org.freedesktop.systemd1.Manager", "Environment", bus_property_append_strv, "as", m->environment },
246 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn", bus_property_append_bool, "b", &m->confirm_spawn },
247 { "org.freedesktop.systemd1.Manager", "ShowStatus", bus_property_append_bool, "b", &m->show_status },
248 { "org.freedesktop.systemd1.Manager", "SysVConsole", bus_property_append_bool, "b", &m->sysv_console },
249 { "org.freedesktop.systemd1.Manager", "UnitPath", bus_property_append_strv, "as", m->lookup_paths.unit_path },
250 { "org.freedesktop.systemd1.Manager", "SysVInitPath", bus_property_append_strv, "as", m->lookup_paths.sysvinit_path },
251 { "org.freedesktop.systemd1.Manager", "SysVRcndPath", bus_property_append_strv, "as", m->lookup_paths.sysvrcnd_path },
252 { "org.freedesktop.systemd1.Manager", "NotifySocket", bus_property_append_string, "s", m->notify_socket },
253 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
254 { NULL, NULL, NULL, NULL, NULL }
255 };
256
257 int r;
258 DBusError error;
259 DBusMessage *reply = NULL;
260 char * path = NULL;
261 JobType job_type = _JOB_TYPE_INVALID;
262 bool reload_if_possible = false;
263
264 assert(connection);
265 assert(message);
266 assert(m);
267
268 dbus_error_init(&error);
269
270 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
271 const char *name;
272 Unit *u;
273
274 if (!dbus_message_get_args(
275 message,
276 &error,
277 DBUS_TYPE_STRING, &name,
278 DBUS_TYPE_INVALID))
279 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
280
281 if (!(u = manager_get_unit(m, name))) {
282 dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
283 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
284 }
285
286 if (!(reply = dbus_message_new_method_return(message)))
287 goto oom;
288
289 if (!(path = unit_dbus_path(u)))
290 goto oom;
291
292 if (!dbus_message_append_args(
293 reply,
294 DBUS_TYPE_OBJECT_PATH, &path,
295 DBUS_TYPE_INVALID))
296 goto oom;
297 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
298 Unit *u;
299 uint32_t pid;
300
301 if (!dbus_message_get_args(
302 message,
303 &error,
304 DBUS_TYPE_UINT32, &pid,
305 DBUS_TYPE_INVALID))
306 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
307
308 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
309 dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
310 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
311 }
312
313 if (!(reply = dbus_message_new_method_return(message)))
314 goto oom;
315
316 if (!(path = unit_dbus_path(u)))
317 goto oom;
318
319 if (!dbus_message_append_args(
320 reply,
321 DBUS_TYPE_OBJECT_PATH, &path,
322 DBUS_TYPE_INVALID))
323 goto oom;
324 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
325 const char *name;
326 Unit *u;
327
328 if (!dbus_message_get_args(
329 message,
330 &error,
331 DBUS_TYPE_STRING, &name,
332 DBUS_TYPE_INVALID))
333 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
334
335 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
336 return bus_send_error_reply(m, connection, message, &error, r);
337
338 if (!(reply = dbus_message_new_method_return(message)))
339 goto oom;
340
341 if (!(path = unit_dbus_path(u)))
342 goto oom;
343
344 if (!dbus_message_append_args(
345 reply,
346 DBUS_TYPE_OBJECT_PATH, &path,
347 DBUS_TYPE_INVALID))
348 goto oom;
349
350 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
351 job_type = JOB_START;
352 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
353 job_type = JOB_STOP;
354 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
355 job_type = JOB_RELOAD;
356 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
357 job_type = JOB_RESTART;
358 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
359 job_type = JOB_TRY_RESTART;
360 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
361 reload_if_possible = true;
362 job_type = JOB_RESTART;
363 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
364 reload_if_possible = true;
365 job_type = JOB_TRY_RESTART;
366 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
367 uint32_t id;
368 Job *j;
369
370 if (!dbus_message_get_args(
371 message,
372 &error,
373 DBUS_TYPE_UINT32, &id,
374 DBUS_TYPE_INVALID))
375 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
376
377 if (!(j = manager_get_job(m, id))) {
378 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
379 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
380 }
381
382 if (!(reply = dbus_message_new_method_return(message)))
383 goto oom;
384
385 if (!(path = job_dbus_path(j)))
386 goto oom;
387
388 if (!dbus_message_append_args(
389 reply,
390 DBUS_TYPE_OBJECT_PATH, &path,
391 DBUS_TYPE_INVALID))
392 goto oom;
393
394 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
395
396 manager_clear_jobs(m);
397
398 if (!(reply = dbus_message_new_method_return(message)))
399 goto oom;
400
401 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetMaintenance")) {
402
403 manager_reset_maintenance(m);
404
405 if (!(reply = dbus_message_new_method_return(message)))
406 goto oom;
407
408 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetMaintenanceUnit")) {
409 const char *name;
410 Unit *u;
411
412 if (!dbus_message_get_args(
413 message,
414 &error,
415 DBUS_TYPE_STRING, &name,
416 DBUS_TYPE_INVALID))
417 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
418
419 if (!(u = manager_get_unit(m, name))) {
420 dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
421 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
422 }
423
424 unit_reset_maintenance(u);
425
426 if (!(reply = dbus_message_new_method_return(message)))
427 goto oom;
428
429 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
430 DBusMessageIter iter, sub;
431 Iterator i;
432 Unit *u;
433 const char *k;
434
435 if (!(reply = dbus_message_new_method_return(message)))
436 goto oom;
437
438 dbus_message_iter_init_append(reply, &iter);
439
440 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
441 goto oom;
442
443 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
444 char *u_path, *j_path;
445 const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
446 DBusMessageIter sub2;
447 uint32_t job_id;
448 Unit *f;
449
450 if (k != u->meta.id)
451 continue;
452
453 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
454 goto oom;
455
456 description = unit_description(u);
457 load_state = unit_load_state_to_string(u->meta.load_state);
458 active_state = unit_active_state_to_string(unit_active_state(u));
459 sub_state = unit_sub_state_to_string(u);
460
461 f = unit_following(u);
462 following = f ? f->meta.id : "";
463
464 if (!(u_path = unit_dbus_path(u)))
465 goto oom;
466
467 if (u->meta.job) {
468 job_id = (uint32_t) u->meta.job->id;
469
470 if (!(j_path = job_dbus_path(u->meta.job))) {
471 free(u_path);
472 goto oom;
473 }
474
475 sjob_type = job_type_to_string(u->meta.job->type);
476 } else {
477 job_id = 0;
478 j_path = u_path;
479 sjob_type = "";
480 }
481
482 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
483 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
484 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
485 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
486 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
487 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
488 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
489 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
490 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
491 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
492 free(u_path);
493 if (u->meta.job)
494 free(j_path);
495 goto oom;
496 }
497
498 free(u_path);
499 if (u->meta.job)
500 free(j_path);
501
502 if (!dbus_message_iter_close_container(&sub, &sub2))
503 goto oom;
504 }
505
506 if (!dbus_message_iter_close_container(&iter, &sub))
507 goto oom;
508
509 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
510 DBusMessageIter iter, sub;
511 Iterator i;
512 Job *j;
513
514 if (!(reply = dbus_message_new_method_return(message)))
515 goto oom;
516
517 dbus_message_iter_init_append(reply, &iter);
518
519 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
520 goto oom;
521
522 HASHMAP_FOREACH(j, m->jobs, i) {
523 char *u_path, *j_path;
524 const char *state, *type;
525 uint32_t id;
526 DBusMessageIter sub2;
527
528 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
529 goto oom;
530
531 id = (uint32_t) j->id;
532 state = job_state_to_string(j->state);
533 type = job_type_to_string(j->type);
534
535 if (!(j_path = job_dbus_path(j)))
536 goto oom;
537
538 if (!(u_path = unit_dbus_path(j->unit))) {
539 free(j_path);
540 goto oom;
541 }
542
543 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
544 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
545 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
546 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
547 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
548 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
549 free(j_path);
550 free(u_path);
551 goto oom;
552 }
553
554 free(j_path);
555 free(u_path);
556
557 if (!dbus_message_iter_close_container(&sub, &sub2))
558 goto oom;
559 }
560
561 if (!dbus_message_iter_close_container(&iter, &sub))
562 goto oom;
563
564 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
565 char *client;
566 Set *s;
567
568 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
569 if (!(s = set_new(string_hash_func, string_compare_func)))
570 goto oom;
571
572 if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
573 set_free(s);
574 goto oom;
575 }
576 }
577
578 if (!(client = strdup(message_get_sender_with_fallback(message))))
579 goto oom;
580
581 if ((r = set_put(s, client)) < 0) {
582 free(client);
583 return bus_send_error_reply(m, connection, message, NULL, r);
584 }
585
586 if (!(reply = dbus_message_new_method_return(message)))
587 goto oom;
588
589 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
590 char *client;
591
592 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
593 dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
594 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
595 }
596
597 free(client);
598
599 if (!(reply = dbus_message_new_method_return(message)))
600 goto oom;
601
602 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
603 FILE *f;
604 char *dump = NULL;
605 size_t size;
606
607 if (!(reply = dbus_message_new_method_return(message)))
608 goto oom;
609
610 if (!(f = open_memstream(&dump, &size)))
611 goto oom;
612
613 manager_dump_units(m, f, NULL);
614 manager_dump_jobs(m, f, NULL);
615
616 if (ferror(f)) {
617 fclose(f);
618 free(dump);
619 goto oom;
620 }
621
622 fclose(f);
623
624 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
625 free(dump);
626 goto oom;
627 }
628
629 free(dump);
630 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
631 const char *name;
632 dbus_bool_t cleanup;
633 Snapshot *s;
634
635 if (!dbus_message_get_args(
636 message,
637 &error,
638 DBUS_TYPE_STRING, &name,
639 DBUS_TYPE_BOOLEAN, &cleanup,
640 DBUS_TYPE_INVALID))
641 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
642
643 if (name && name[0] == 0)
644 name = NULL;
645
646 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
647 return bus_send_error_reply(m, connection, message, &error, r);
648
649 if (!(reply = dbus_message_new_method_return(message)))
650 goto oom;
651
652 if (!(path = unit_dbus_path(UNIT(s))))
653 goto oom;
654
655 if (!dbus_message_append_args(
656 reply,
657 DBUS_TYPE_OBJECT_PATH, &path,
658 DBUS_TYPE_INVALID))
659 goto oom;
660
661 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
662 char *introspection = NULL;
663 FILE *f;
664 Iterator i;
665 Unit *u;
666 Job *j;
667 const char *k;
668 size_t size;
669
670 if (!(reply = dbus_message_new_method_return(message)))
671 goto oom;
672
673 /* We roll our own introspection code here, instead of
674 * relying on bus_default_message_handler() because we
675 * need to generate our introspection string
676 * dynamically. */
677
678 if (!(f = open_memstream(&introspection, &size)))
679 goto oom;
680
681 fputs(INTROSPECTION_BEGIN, f);
682
683 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
684 char *p;
685
686 if (k != u->meta.id)
687 continue;
688
689 if (!(p = bus_path_escape(k))) {
690 fclose(f);
691 free(introspection);
692 goto oom;
693 }
694
695 fprintf(f, "<node name=\"unit/%s\"/>", p);
696 free(p);
697 }
698
699 HASHMAP_FOREACH(j, m->jobs, i)
700 fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
701
702 fputs(INTROSPECTION_END, f);
703
704 if (ferror(f)) {
705 fclose(f);
706 free(introspection);
707 goto oom;
708 }
709
710 fclose(f);
711
712 if (!introspection)
713 goto oom;
714
715 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
716 free(introspection);
717 goto oom;
718 }
719
720 free(introspection);
721
722 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
723
724 assert(!m->queued_message);
725
726 /* Instead of sending the reply back right away, we
727 * just remember that we need to and then send it
728 * after the reload is finished. That way the caller
729 * knows when the reload finished. */
730
731 if (!(m->queued_message = dbus_message_new_method_return(message)))
732 goto oom;
733
734 m->queued_message_connection = connection;
735 m->exit_code = MANAGER_RELOAD;
736
737 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
738
739 if (!(reply = dbus_message_new_method_return(message)))
740 goto oom;
741
742 m->exit_code = MANAGER_REEXECUTE;
743
744 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
745
746 if (m->running_as == MANAGER_SYSTEM) {
747 dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for session managers.");
748 return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
749 }
750
751 if (!(reply = dbus_message_new_method_return(message)))
752 goto oom;
753
754 m->exit_code = MANAGER_EXIT;
755
756 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
757 char **l = NULL, **e = NULL;
758
759 if ((r = bus_parse_strv(message, &l)) < 0) {
760 if (r == -ENOMEM)
761 goto oom;
762
763 return bus_send_error_reply(m, connection, message, NULL, r);
764 }
765
766 e = strv_env_merge(2, m->environment, l);
767 strv_free(l);
768
769 if (!e)
770 goto oom;
771
772 if (!(reply = dbus_message_new_method_return(message))) {
773 strv_free(e);
774 goto oom;
775 }
776
777 strv_free(m->environment);
778 m->environment = e;
779
780 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
781 char **l = NULL, **e = NULL;
782
783 if ((r = bus_parse_strv(message, &l)) < 0) {
784 if (r == -ENOMEM)
785 goto oom;
786
787 return bus_send_error_reply(m, connection, message, NULL, r);
788 }
789
790 e = strv_env_delete(m->environment, 1, l);
791 strv_free(l);
792
793 if (!e)
794 goto oom;
795
796 if (!(reply = dbus_message_new_method_return(message)))
797 goto oom;
798
799 strv_free(m->environment);
800 m->environment = e;
801
802 } else
803 return bus_default_message_handler(m, connection, message, NULL, properties);
804
805 if (job_type != _JOB_TYPE_INVALID) {
806 const char *name, *smode;
807 JobMode mode;
808 Job *j;
809 Unit *u;
810
811 if (!dbus_message_get_args(
812 message,
813 &error,
814 DBUS_TYPE_STRING, &name,
815 DBUS_TYPE_STRING, &smode,
816 DBUS_TYPE_INVALID))
817 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
818
819 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
820 dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
821 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
822 }
823
824 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
825 return bus_send_error_reply(m, connection, message, &error, r);
826
827 if (reload_if_possible && unit_can_reload(u)) {
828 if (job_type == JOB_RESTART)
829 job_type = JOB_RELOAD_OR_START;
830 else if (job_type == JOB_TRY_RESTART)
831 job_type = JOB_RELOAD;
832 }
833
834 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
835 (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
836 ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
837 (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
838 dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
839 return bus_send_error_reply(m, connection, message, &error, -EPERM);
840 }
841
842 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
843 return bus_send_error_reply(m, connection, message, &error, r);
844
845 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
846 goto oom;
847
848 j->bus = connection;
849
850 if (!(reply = dbus_message_new_method_return(message)))
851 goto oom;
852
853 if (!(path = job_dbus_path(j)))
854 goto oom;
855
856 if (!dbus_message_append_args(
857 reply,
858 DBUS_TYPE_OBJECT_PATH, &path,
859 DBUS_TYPE_INVALID))
860 goto oom;
861 }
862
863 free(path);
864
865 if (reply) {
866 if (!dbus_connection_send(connection, reply, NULL))
867 goto oom;
868
869 dbus_message_unref(reply);
870 }
871
872 return DBUS_HANDLER_RESULT_HANDLED;
873
874 oom:
875 free(path);
876
877 if (reply)
878 dbus_message_unref(reply);
879
880 dbus_error_free(&error);
881
882 return DBUS_HANDLER_RESULT_NEED_MEMORY;
883 }
884
885 const DBusObjectPathVTable bus_manager_vtable = {
886 .message_function = bus_manager_message_handler
887 };
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