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dbus: make errors reported via D-Bus more useful
[thirdparty/systemd.git] / src / dbus-manager.c
CommitLineData
ea430986
LP		 1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
a7334b09
LP		 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
ea430986
LP		 22#include <errno.h>
23
24#include "dbus.h"
25#include "log.h"
4139c1b2 26#include "dbus-manager.h"
1137a57c 27#include "strv.h"
398ef8ba 28#include "bus-errors.h"
ea430986 29
4288f619
LP		 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=\"LoadUnit\">\n" \
37 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
38 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
39 " </method>\n" \
c87eba54
LP		 40 " <method name=\"StartUnit\">\n" \
41 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
42 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
43 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
44 " </method>\n" \
45 " <method name=\"StopUnit\">\n" \
46 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
47 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
48 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
49 " </method>\n" \
50 " <method name=\"ReloadUnit\">\n" \
51 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
52 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
53 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
54 " </method>\n" \
55 " <method name=\"RestartUnit\">\n" \
56 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
57 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
58 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
59 " </method>\n" \
9a1ac7b9
LP		 60 " <method name=\"TryRestartUnit\">\n" \
61 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
62 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
63 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
64 " </method>\n" \
4288f619
LP		 65 " <method name=\"GetJob\">\n" \
66 " <arg name=\"id\" type=\"u\" direction=\"in\"/>\n" \
67 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
68 " </method>\n" \
69 " <method name=\"ClearJobs\"/>\n" \
70 " <method name=\"ListUnits\">\n" \
71 " <arg name=\"units\" type=\"a(sssssouso)\" direction=\"out\"/>\n" \
72 " </method>\n" \
73 " <method name=\"ListJobs\">\n" \
74 " <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
75 " </method>\n" \
76 " <method name=\"Subscribe\"/>\n" \
77 " <method name=\"Unsubscribe\"/>\n" \
78 " <method name=\"Dump\"/>\n" \
79 " <method name=\"CreateSnapshot\">\n" \
80 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
81 " <arg nane=\"cleanup\" type=\"b\" direction=\"in\"/>\n" \
82 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
83 " </method>\n" \
84 " <method name=\"Reload\"/>\n" \
85 " <method name=\"Reexecute\"/>\n" \
86 " <method name=\"Exit\"/>\n" \
87 " <method name=\"SetEnvironment\">\n" \
88 " <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \
89 " </method>\n" \
90 " <method name=\"UnsetEnvironment\">\n" \
91 " <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \
92 " </method>\n" \
93 " <signal name=\"UnitNew\">\n" \
94 " <arg name=\"id\" type=\"s\"/>\n" \
95 " <arg name=\"unit\" type=\"o\"/>\n" \
96 " </signal>\n" \
97 " <signal name=\"UnitRemoved\">\n" \
98 " <arg name=\"id\" type=\"s\"/>\n" \
99 " <arg name=\"unit\" type=\"o\"/>\n" \
100 " </signal>\n" \
101 " <signal name=\"JobNew\">\n" \
102 " <arg name=\"id\" type=\"u\"/>\n" \
103 " <arg name=\"job\" type=\"o\"/>\n" \
104 " </signal>\n" \
105 " <signal name=\"JobRemoved\">\n" \
106 " <arg name=\"id\" type=\"u\"/>\n" \
107 " <arg name=\"job\" type=\"o\"/>\n" \
108 " <arg name=\"success\" type=\"b\"/>\n" \
109 " </signal>" \
110 " <property name=\"Version\" type=\"s\" access=\"read\"/>\n" \
111 " <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
0442c13b 112 " <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
4288f619
LP		 113 " <property name=\"LogLevel\" type=\"s\" access=\"read\"/>\n" \
114 " <property name=\"LogTarget\" type=\"s\" access=\"read\"/>\n" \
115 " <property name=\"NNames\" type=\"u\" access=\"read\"/>\n" \
116 " <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n" \
117 " <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
f295f5c0 118 " <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
9e58ff9c 119 " <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
f295f5c0
LP		 120 " <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
121 " <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
122 " <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n" \
123 " <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
4288f619
LP		 124 " </interface>\n"
125
ea430986
LP		 126#define INTROSPECTION_BEGIN \
127 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
4288f619
LP		 128 "<node>\n" \
129 BUS_MANAGER_INTERFACE \
ea430986
LP		 130 BUS_PROPERTIES_INTERFACE \
131 BUS_INTROSPECTABLE_INTERFACE
132
133#define INTROSPECTION_END \
4288f619
LP		 134 "</node>\n"
135
136const char bus_manager_interface[] = BUS_MANAGER_INTERFACE;
ea430986 137
4139c1b2 138static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
1adf1049
LP		 139
140static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
141 const char *t;
142
143 assert(m);
144 assert(i);
145 assert(property);
146
147 t = log_target_to_string(log_get_target());
148
149 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
150 return -ENOMEM;
151
152 return 0;
153}
154
155static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
156 const char *t;
157
158 assert(m);
159 assert(i);
160 assert(property);
161
162 t = log_level_to_string(log_get_max_level());
163
164 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
165 return -ENOMEM;
166
167 return 0;
168}
169
4f0f902f
LP		 170static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
171 uint32_t u;
172
173 assert(m);
174 assert(i);
175 assert(property);
176
177 u = hashmap_size(m->units);
178
179 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
180 return -ENOMEM;
181
182 return 0;
183}
184
185static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
186 uint32_t u;
187
188 assert(m);
189 assert(i);
190 assert(property);
191
192 u = hashmap_size(m->jobs);
193
194 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
195 return -ENOMEM;
196
197 return 0;
198}
199
894ba510
LP		 200static const char *message_get_sender_with_fallback(DBusMessage *m) {
201 const char *s;
202
203 assert(m);
204
205 if ((s = dbus_message_get_sender(m)))
206 return s;
207
208 /* When the message came in from a direct connection the
209 * message will have no sender. We fix that here. */
210
211 return ":no-sender";
212}
213
5e8d1c9a 214static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
ea430986 215 Manager *m = data;
1adf1049
LP		 216
217 const BusProperty properties[] = {
f295f5c0
LP		 218 { "org.freedesktop.systemd1.Manager", "Version", bus_property_append_string, "s", PACKAGE_STRING },
219 { "org.freedesktop.systemd1.Manager", "RunningAs", bus_manager_append_running_as, "s", &m->running_as },
220 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t", &m->startup_timestamp.realtime },
221 { "org.freedesktop.systemd1.Manager", "LogLevel", bus_manager_append_log_level, "s", NULL },
222 { "org.freedesktop.systemd1.Manager", "LogTarget", bus_manager_append_log_target, "s", NULL },
223 { "org.freedesktop.systemd1.Manager", "NNames", bus_manager_append_n_names, "u", NULL },
224 { "org.freedesktop.systemd1.Manager", "NJobs", bus_manager_append_n_jobs, "u", NULL },
225 { "org.freedesktop.systemd1.Manager", "Environment", bus_property_append_strv, "as", m->environment },
226 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn", bus_property_append_bool, "b", &m->confirm_spawn },
9e58ff9c 227 { "org.freedesktop.systemd1.Manager", "ShowStatus", bus_property_append_bool, "b", &m->show_status },
f295f5c0
LP		 228 { "org.freedesktop.systemd1.Manager", "UnitPath", bus_property_append_strv, "as", m->lookup_paths.unit_path },
229 { "org.freedesktop.systemd1.Manager", "SysVInitPath", bus_property_append_strv, "as", m->lookup_paths.sysvinit_path },
230 { "org.freedesktop.systemd1.Manager", "SysVRcndPath", bus_property_append_strv, "as", m->lookup_paths.sysvrcnd_path },
231 { "org.freedesktop.systemd1.Manager", "NotifySocket", bus_property_append_string, "s", m->notify_socket },
1adf1049
LP		 232 { NULL, NULL, NULL, NULL, NULL }
233 };
234
235 int r;
ea430986
LP		 236 DBusError error;
237 DBusMessage *reply = NULL;
238 char * path = NULL;
c87eba54 239 JobType job_type = _JOB_TYPE_INVALID;
ea430986
LP		 240
241 assert(connection);
242 assert(message);
243 assert(m);
244
245 dbus_error_init(&error);
246
4139c1b2 247 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
ea430986
LP		 248 const char *name;
249 Unit *u;
250
251 if (!dbus_message_get_args(
252 message,
253 &error,
254 DBUS_TYPE_STRING, &name,
255 DBUS_TYPE_INVALID))
5e8d1c9a 256 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
ea430986 257
398ef8ba
LP		 258 if (!(u = manager_get_unit(m, name))) {
259 dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
260 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
261 }
ea430986
LP		 262
263 if (!(reply = dbus_message_new_method_return(message)))
264 goto oom;
265
266 if (!(path = unit_dbus_path(u)))
267 goto oom;
268
269 if (!dbus_message_append_args(
270 reply,
271 DBUS_TYPE_OBJECT_PATH, &path,
272 DBUS_TYPE_INVALID))
273 goto oom;
274
4139c1b2 275 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
ea430986
LP		 276 const char *name;
277 Unit *u;
278
279 if (!dbus_message_get_args(
280 message,
281 &error,
282 DBUS_TYPE_STRING, &name,
283 DBUS_TYPE_INVALID))
5e8d1c9a 284 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
ea430986 285
398ef8ba
LP		 286 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
287 return bus_send_error_reply(m, connection, message, &error, r);
ea430986
LP		 288
289 if (!(reply = dbus_message_new_method_return(message)))
290 goto oom;
291
292 if (!(path = unit_dbus_path(u)))
293 goto oom;
294
295 if (!dbus_message_append_args(
296 reply,
297 DBUS_TYPE_OBJECT_PATH, &path,
298 DBUS_TYPE_INVALID))
299 goto oom;
300
c87eba54
LP		 301 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
302 job_type = JOB_START;
303 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
304 job_type = JOB_STOP;
305 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
306 job_type = JOB_RELOAD;
307 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
308 job_type = JOB_RESTART;
9a1ac7b9
LP		 309 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
310 job_type = JOB_TRY_RESTART;
c87eba54 311 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
ea430986
LP		 312 uint32_t id;
313 Job *j;
314
315 if (!dbus_message_get_args(
316 message,
317 &error,
318 DBUS_TYPE_UINT32, &id,
319 DBUS_TYPE_INVALID))
5e8d1c9a 320 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
ea430986 321
398ef8ba
LP		 322 if (!(j = manager_get_job(m, id))) {
323 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
324 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
325 }
ea430986
LP		 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
4139c1b2 339 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
ea430986
LP		 340
341 manager_clear_jobs(m);
342
343 if (!(reply = dbus_message_new_method_return(message)))
344 goto oom;
345
4139c1b2 346 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
ea430986
LP		 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
10a94420 357 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sssssouso)", &sub))
ea430986
LP		 358 goto oom;
359
360 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
47be870b 361 char *u_path, *j_path;
c87eba54 362 const char *description, *load_state, *active_state, *sub_state, *sjob_type;
ea430986
LP		 363 DBusMessageIter sub2;
364 uint32_t job_id;
365
9e2f7c11 366 if (k != u->meta.id)
ea430986
LP		 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));
10a94420 375 sub_state = unit_sub_state_to_string(u);
ea430986 376
47be870b 377 if (!(u_path = unit_dbus_path(u)))
ea430986
LP		 378 goto oom;
379
380 if (u->meta.job) {
381 job_id = (uint32_t) u->meta.job->id;
382
47be870b
LP		 383 if (!(j_path = job_dbus_path(u->meta.job))) {
384 free(u_path);
ea430986
LP		 385 goto oom;
386 }
387
c87eba54 388 sjob_type = job_type_to_string(u->meta.job->type);
ea430986
LP		 389 } else {
390 job_id = 0;
47be870b 391 j_path = u_path;
c87eba54 392 sjob_type = "";
ea430986
LP		 393 }
394
9e2f7c11 395 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
ea430986
LP		 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) ||
10a94420 399 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
47be870b 400 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
ea430986 401 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
c87eba54 402 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
47be870b
LP		 403 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
404 free(u_path);
ea430986 405 if (u->meta.job)
47be870b 406 free(j_path);
ea430986
LP		 407 goto oom;
408 }
409
47be870b 410 free(u_path);
ea430986 411 if (u->meta.job)
47be870b 412 free(j_path);
ea430986
LP		 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
4139c1b2 421 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
ea430986
LP		 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) {
47be870b 435 char *u_path, *j_path;
9e2f7c11 436 const char *state, *type;
ea430986
LP		 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;
ea430986 444 state = job_state_to_string(j->state);
2b53c70b 445 type = job_type_to_string(j->type);
ea430986 446
47be870b 447 if (!(j_path = job_dbus_path(j)))
ea430986
LP		 448 goto oom;
449
47be870b
LP		 450 if (!(u_path = unit_dbus_path(j->unit))) {
451 free(j_path);
ea430986
LP		 452 goto oom;
453 }
454
455 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
9e2f7c11 456 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
ea430986
LP		 457 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
458 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
47be870b
LP		 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);
ea430986
LP		 463 goto oom;
464 }
465
47be870b
LP		 466 free(j_path);
467 free(u_path);
ea430986
LP		 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
4139c1b2 476 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
c1e1601e 477 char *client;
a567261a
LP		 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 }
c1e1601e 489
894ba510 490 if (!(client = strdup(message_get_sender_with_fallback(message))))
c1e1601e
LP		 491 goto oom;
492
a567261a
LP		 493 if ((r = set_put(s, client)) < 0) {
494 free(client);
5e8d1c9a 495 return bus_send_error_reply(m, connection, message, NULL, r);
a567261a 496 }
c1e1601e
LP		 497
498 if (!(reply = dbus_message_new_method_return(message)))
499 goto oom;
500
4139c1b2 501 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
c1e1601e
LP		 502 char *client;
503
398ef8ba
LP		 504 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
505 dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
506 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
507 }
c1e1601e
LP		 508
509 free(client);
510
511 if (!(reply = dbus_message_new_method_return(message)))
512 goto oom;
513
4139c1b2 514 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
b152adec
LP		 515 FILE *f;
516 char *dump = NULL;
517 size_t size;
518
519 if (!(reply = dbus_message_new_method_return(message)))
520 goto oom;
521
522 if (!(f = open_memstream(&dump, &size)))
523 goto oom;
524
525 manager_dump_units(m, f, NULL);
526 manager_dump_jobs(m, f, NULL);
527
528 if (ferror(f)) {
529 fclose(f);
530 free(dump);
531 goto oom;
532 }
533
534 fclose(f);
535
536 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
537 free(dump);
538 goto oom;
539 }
540
541 free(dump);
4139c1b2
LP		 542 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
543 const char *name;
544 dbus_bool_t cleanup;
545 Snapshot *s;
546
547 if (!dbus_message_get_args(
548 message,
549 &error,
550 DBUS_TYPE_STRING, &name,
551 DBUS_TYPE_BOOLEAN, &cleanup,
552 DBUS_TYPE_INVALID))
5e8d1c9a 553 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
4139c1b2
LP		 554
555 if (name && name[0] == 0)
556 name = NULL;
557
398ef8ba
LP		 558 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
559 return bus_send_error_reply(m, connection, message, &error, r);
4139c1b2
LP		 560
561 if (!(reply = dbus_message_new_method_return(message)))
562 goto oom;
563
564 if (!(path = unit_dbus_path(UNIT(s))))
565 goto oom;
566
567 if (!dbus_message_append_args(
568 reply,
569 DBUS_TYPE_OBJECT_PATH, &path,
570 DBUS_TYPE_INVALID))
571 goto oom;
b152adec 572
ea430986
LP		 573 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
574 char *introspection = NULL;
575 FILE *f;
576 Iterator i;
577 Unit *u;
578 Job *j;
579 const char *k;
580 size_t size;
581
582 if (!(reply = dbus_message_new_method_return(message)))
583 goto oom;
584
585 /* We roll our own introspection code here, instead of
586 * relying on bus_default_message_handler() because we
587 * need to generate our introspection string
588 * dynamically. */
589
590 if (!(f = open_memstream(&introspection, &size)))
591 goto oom;
592
593 fputs(INTROSPECTION_BEGIN, f);
594
595 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
596 char *p;
597
9e2f7c11 598 if (k != u->meta.id)
ea430986
LP		 599 continue;
600
601 if (!(p = bus_path_escape(k))) {
602 fclose(f);
603 free(introspection);
604 goto oom;
605 }
606
607 fprintf(f, "<node name=\"unit/%s\"/>", p);
608 free(p);
609 }
610
611 HASHMAP_FOREACH(j, m->jobs, i)
612 fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
613
614 fputs(INTROSPECTION_END, f);
615
616 if (ferror(f)) {
617 fclose(f);
618 free(introspection);
619 goto oom;
620 }
621
622 fclose(f);
623
624 if (!introspection)
625 goto oom;
626
627 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
628 free(introspection);
629 goto oom;
630 }
631
632 free(introspection);
633
a16e1123
LP		 634 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
635
636 assert(!m->queued_message);
637
638 /* Instead of sending the reply back right away, we
639 * just remember that we need to and then send it
640 * after the reload is finished. That way the caller
641 * knows when the reload finished. */
642
643 if (!(m->queued_message = dbus_message_new_method_return(message)))
644 goto oom;
645
7b97f477 646 m->queued_message_connection = connection;
a16e1123
LP		 647 m->exit_code = MANAGER_RELOAD;
648
649 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
650
651 if (!(reply = dbus_message_new_method_return(message)))
652 goto oom;
653
654 m->exit_code = MANAGER_REEXECUTE;
655
656 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
657
398ef8ba
LP		 658 if (m->running_as == MANAGER_SYSTEM) {
659 dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for session managers.");
660 return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
661 }
a16e1123
LP		 662
663 if (!(reply = dbus_message_new_method_return(message)))
664 goto oom;
665
666 m->exit_code = MANAGER_EXIT;
667
1137a57c
LP		 668 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
669 char **l = NULL, **e = NULL;
670
671 if ((r = bus_parse_strv(message, &l)) < 0) {
672 if (r == -ENOMEM)
673 goto oom;
674
5e8d1c9a 675 return bus_send_error_reply(m, connection, message, NULL, r);
1137a57c
LP		 676 }
677
5b6319dc 678 e = strv_env_merge(2, m->environment, l);
1137a57c
LP		 679 strv_free(l);
680
681 if (!e)
682 goto oom;
683
684 if (!(reply = dbus_message_new_method_return(message))) {
685 strv_free(e);
686 goto oom;
687 }
688
689 strv_free(m->environment);
690 m->environment = e;
691
692 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
693 char **l = NULL, **e = NULL;
694
695 if ((r = bus_parse_strv(message, &l)) < 0) {
696 if (r == -ENOMEM)
697 goto oom;
698
5e8d1c9a 699 return bus_send_error_reply(m, connection, message, NULL, r);
1137a57c
LP		 700 }
701
5b6319dc 702 e = strv_env_delete(m->environment, 1, l);
1137a57c
LP		 703 strv_free(l);
704
705 if (!e)
706 goto oom;
707
708 if (!(reply = dbus_message_new_method_return(message)))
709 goto oom;
710
711 strv_free(m->environment);
712 m->environment = e;
713
ea430986 714 } else
5e8d1c9a 715 return bus_default_message_handler(m, connection, message, NULL, properties);
ea430986 716
c87eba54
LP		 717
718 if (job_type != _JOB_TYPE_INVALID) {
719 const char *name, *smode;
720 JobMode mode;
721 Job *j;
722 Unit *u;
723
724 if (!dbus_message_get_args(
725 message,
726 &error,
727 DBUS_TYPE_STRING, &name,
728 DBUS_TYPE_STRING, &smode,
729 DBUS_TYPE_INVALID))
5e8d1c9a 730 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
c87eba54 731
398ef8ba
LP		 732 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
733 dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
734 return bus_send_error_reply(m, connection, message, &error, -EINVAL);
735 }
c87eba54 736
398ef8ba
LP		 737 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
738 return bus_send_error_reply(m, connection, message, &error, r);
c87eba54 739
398ef8ba
LP		 740 if (job_type == JOB_START && u->meta.only_by_dependency) {
741 dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Unit may be activated by dependency only.");
742 return bus_send_error_reply(m, connection, message, &error, -EPERM);
743 }
c87eba54 744
398ef8ba
LP		 745 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
746 return bus_send_error_reply(m, connection, message, &error, r);
c87eba54 747
894ba510 748 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
a567261a
LP		 749 goto oom;
750
751 j->bus = connection;
752
c87eba54
LP		 753 if (!(reply = dbus_message_new_method_return(message)))
754 goto oom;
755
756 if (!(path = job_dbus_path(j)))
757 goto oom;
758
759 if (!dbus_message_append_args(
760 reply,
761 DBUS_TYPE_OBJECT_PATH, &path,
762 DBUS_TYPE_INVALID))
763 goto oom;
764 }
765
ea430986
LP		 766 free(path);
767
768 if (reply) {
769 if (!dbus_connection_send(connection, reply, NULL))
770 goto oom;
771
772 dbus_message_unref(reply);
773 }
774
775 return DBUS_HANDLER_RESULT_HANDLED;
776
777oom:
778 free(path);
779
780 if (reply)
781 dbus_message_unref(reply);
782
783 dbus_error_free(&error);
784
785 return DBUS_HANDLER_RESULT_NEED_MEMORY;
786}
787
788const DBusObjectPathVTable bus_manager_vtable = {
789 .message_function = bus_manager_message_handler
790};
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