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dbus: don't hit assert when dumping properties
[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 #include <unistd.h>
24
25 #include "dbus.h"
26 #include "log.h"
27 #include "dbus-manager.h"
28 #include "strv.h"
29 #include "bus-errors.h"
30 #include "build.h"
31 #include "dbus-common.h"
32
33 #define BUS_MANAGER_INTERFACE_BEGIN \
34 " <interface name=\"org.freedesktop.systemd1.Manager\">\n"
35
36 #define BUS_MANAGER_INTERFACE_METHODS \
37 " <method name=\"GetUnit\">\n" \
38 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
39 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
40 " </method>\n" \
41 " <method name=\"GetUnitByPID\">\n" \
42 " <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \
43 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
44 " </method>\n" \
45 " <method name=\"LoadUnit\">\n" \
46 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
47 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
48 " </method>\n" \
49 " <method name=\"StartUnit\">\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=\"StartUnitReplace\">\n" \
55 " <arg name=\"old_unit\" type=\"s\" direction=\"in\"/>\n" \
56 " <arg name=\"new_unit\" 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" \
60 " <method name=\"StopUnit\">\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" \
65 " <method name=\"ReloadUnit\">\n" \
66 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
67 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
68 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
69 " </method>\n" \
70 " <method name=\"RestartUnit\">\n" \
71 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
72 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
73 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
74 " </method>\n" \
75 " <method name=\"TryRestartUnit\">\n" \
76 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
77 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
78 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
79 " </method>\n" \
80 " <method name=\"ReloadOrRestartUnit\">\n" \
81 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
82 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
83 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
84 " </method>\n" \
85 " <method name=\"ReloadOrTryRestartUnit\">\n" \
86 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
87 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
88 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
89 " </method>\n" \
90 " <method name=\"KillUnit\">\n" \
91 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
92 " <arg name=\"who\" type=\"s\" direction=\"in\"/>\n" \
93 " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
94 " <arg name=\"signal\" type=\"i\" direction=\"in\"/>\n" \
95 " </method>\n" \
96 " <method name=\"ResetFailedUnit\">\n" \
97 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
98 " </method>\n" \
99 " <method name=\"GetJob\">\n" \
100 " <arg name=\"id\" type=\"u\" direction=\"in\"/>\n" \
101 " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
102 " </method>\n" \
103 " <method name=\"ClearJobs\"/>\n" \
104 " <method name=\"ResetFailed\"/>\n" \
105 " <method name=\"ListUnits\">\n" \
106 " <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
107 " </method>\n" \
108 " <method name=\"ListJobs\">\n" \
109 " <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
110 " </method>\n" \
111 " <method name=\"Subscribe\"/>\n" \
112 " <method name=\"Unsubscribe\"/>\n" \
113 " <method name=\"Dump\"/>\n" \
114 " <method name=\"CreateSnapshot\">\n" \
115 " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
116 " <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n" \
117 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
118 " </method>\n" \
119 " <method name=\"Reload\"/>\n" \
120 " <method name=\"Reexecute\"/>\n" \
121 " <method name=\"Exit\"/>\n" \
122 " <method name=\"Reboot\"/>\n" \
123 " <method name=\"PowerOff\"/>\n" \
124 " <method name=\"Halt\"/>\n" \
125 " <method name=\"KExec\"/>\n" \
126 " <method name=\"SetEnvironment\">\n" \
127 " <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \
128 " </method>\n" \
129 " <method name=\"UnsetEnvironment\">\n" \
130 " <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \
131 " </method>\n"
132
133 #define BUS_MANAGER_INTERFACE_SIGNALS \
134 " <signal name=\"UnitNew\">\n" \
135 " <arg name=\"id\" type=\"s\"/>\n" \
136 " <arg name=\"unit\" type=\"o\"/>\n" \
137 " </signal>\n" \
138 " <signal name=\"UnitRemoved\">\n" \
139 " <arg name=\"id\" type=\"s\"/>\n" \
140 " <arg name=\"unit\" type=\"o\"/>\n" \
141 " </signal>\n" \
142 " <signal name=\"JobNew\">\n" \
143 " <arg name=\"id\" type=\"u\"/>\n" \
144 " <arg name=\"job\" type=\"o\"/>\n" \
145 " </signal>\n" \
146 " <signal name=\"JobRemoved\">\n" \
147 " <arg name=\"id\" type=\"u\"/>\n" \
148 " <arg name=\"job\" type=\"o\"/>\n" \
149 " <arg name=\"result\" type=\"s\"/>\n" \
150 " </signal>"
151
152 #define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL \
153 " <property name=\"Version\" type=\"s\" access=\"read\"/>\n" \
154 " <property name=\"Distribution\" type=\"s\" access=\"read\"/>\n" \
155 " <property name=\"Features\" type=\"s\" access=\"read\"/>\n" \
156 " <property name=\"Tainted\" type=\"s\" access=\"read\"/>\n" \
157 " <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
158 " <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
159 " <property name=\"InitRDTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
160 " <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
161 " <property name=\"StartupTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
162 " <property name=\"FinishTimestamp\" type=\"t\" access=\"read\"/>\n" \
163 " <property name=\"FinishTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
164 " <property name=\"LogLevel\" type=\"s\" access=\"readwrite\"/>\n" \
165 " <property name=\"LogTarget\" type=\"s\" access=\"readwrite\"/>\n" \
166 " <property name=\"NNames\" type=\"u\" access=\"read\"/>\n" \
167 " <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n" \
168 " <property name=\"NInstalledJobs\" type=\"u\" access=\"read\"/>\n" \
169 " <property name=\"NFailedJobs\" type=\"u\" access=\"read\"/>\n" \
170 " <property name=\"Progress\" type=\"d\" access=\"read\"/>\n" \
171 " <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
172 " <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
173 " <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
174 " <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
175 " <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
176 " <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
177 " <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
178 " <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n" \
179 " <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
180 " <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
181 " <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n"
182
183 #ifdef HAVE_SYSV_COMPAT
184 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV \
185 " <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
186 " <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
187 " <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n"
188 #else
189 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
190 #endif
191
192 #define BUS_MANAGER_INTERFACE_END \
193 " </interface>\n"
194
195 #define BUS_MANAGER_INTERFACE \
196 BUS_MANAGER_INTERFACE_BEGIN \
197 BUS_MANAGER_INTERFACE_METHODS \
198 BUS_MANAGER_INTERFACE_SIGNALS \
199 BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL \
200 BUS_MANAGER_INTERFACE_PROPERTIES_SYSV \
201 BUS_MANAGER_INTERFACE_END
202
203 #define INTROSPECTION_BEGIN \
204 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
205 "<node>\n" \
206 BUS_MANAGER_INTERFACE \
207 BUS_PROPERTIES_INTERFACE \
208 BUS_PEER_INTERFACE \
209 BUS_INTROSPECTABLE_INTERFACE
210
211 #define INTROSPECTION_END \
212 "</node>\n"
213
214 #define INTERFACES_LIST \
215 BUS_GENERIC_INTERFACES_LIST \
216 "org.freedesktop.systemd1.Manager\0"
217
218 const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
219
220 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
221 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
222
223 static int bus_manager_append_tainted(DBusMessageIter *i, const char *property, void *data) {
224 const char *t;
225 Manager *m = data;
226 char buf[LINE_MAX] = "", *e = buf, *p = NULL;
227
228 assert(i);
229 assert(property);
230 assert(m);
231
232 if (m->taint_usr)
233 e = stpcpy(e, "usr-separate-fs ");
234
235 if (readlink_malloc("/etc/mtab", &p) < 0)
236 e = stpcpy(e, "etc-mtab-not-symlink ");
237 else
238 free(p);
239
240 if (access("/proc/cgroups", F_OK) < 0)
241 e = stpcpy(e, "cgroups-missing ");
242
243 t = strstrip(buf);
244
245 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
246 return -ENOMEM;
247
248 return 0;
249 }
250
251 static int bus_manager_append_log_target(DBusMessageIter *i, const char *property, void *data) {
252 const char *t;
253
254 assert(i);
255 assert(property);
256
257 t = log_target_to_string(log_get_target());
258
259 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
260 return -ENOMEM;
261
262 return 0;
263 }
264
265 static int bus_manager_set_log_target(DBusMessageIter *i, const char *property) {
266 const char *t;
267
268 assert(i);
269 assert(property);
270
271 dbus_message_iter_get_basic(i, &t);
272
273 return log_set_target_from_string(t);
274 }
275
276 static int bus_manager_append_log_level(DBusMessageIter *i, const char *property, void *data) {
277 const char *t;
278
279 assert(i);
280 assert(property);
281
282 t = log_level_to_string(log_get_max_level());
283
284 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
285 return -ENOMEM;
286
287 return 0;
288 }
289
290 static int bus_manager_set_log_level(DBusMessageIter *i, const char *property) {
291 const char *t;
292
293 assert(i);
294 assert(property);
295
296 dbus_message_iter_get_basic(i, &t);
297
298 return log_set_max_level_from_string(t);
299 }
300
301 static int bus_manager_append_n_names(DBusMessageIter *i, const char *property, void *data) {
302 Manager *m = data;
303 uint32_t u;
304
305 assert(i);
306 assert(property);
307 assert(m);
308
309 u = hashmap_size(m->units);
310
311 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
312 return -ENOMEM;
313
314 return 0;
315 }
316
317 static int bus_manager_append_n_jobs(DBusMessageIter *i, const char *property, void *data) {
318 Manager *m = data;
319 uint32_t u;
320
321 assert(i);
322 assert(property);
323 assert(m);
324
325 u = hashmap_size(m->jobs);
326
327 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
328 return -ENOMEM;
329
330 return 0;
331 }
332
333 static int bus_manager_append_progress(DBusMessageIter *i, const char *property, void *data) {
334 double d;
335 Manager *m = data;
336
337 assert(i);
338 assert(property);
339 assert(m);
340
341 if (dual_timestamp_is_set(&m->finish_timestamp))
342 d = 1.0;
343 else
344 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
345
346 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
347 return -ENOMEM;
348
349 return 0;
350 }
351
352 static const char *message_get_sender_with_fallback(DBusMessage *m) {
353 const char *s;
354
355 assert(m);
356
357 if ((s = dbus_message_get_sender(m)))
358 return s;
359
360 /* When the message came in from a direct connection the
361 * message will have no sender. We fix that here. */
362
363 return ":no-sender";
364 }
365
366 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
367 Manager *m = data;
368
369 const BusProperty properties[] = {
370 { "org.freedesktop.systemd1.Manager", "Version", bus_property_append_string, "s", PACKAGE_STRING },
371 { "org.freedesktop.systemd1.Manager", "Distribution", bus_property_append_string, "s", DISTRIBUTION },
372 { "org.freedesktop.systemd1.Manager", "Features", bus_property_append_string, "s", SYSTEMD_FEATURES },
373 { "org.freedesktop.systemd1.Manager", "RunningAs", bus_manager_append_running_as, "s", &m->running_as },
374 { "org.freedesktop.systemd1.Manager", "Tainted", bus_manager_append_tainted, "s", m },
375 { "org.freedesktop.systemd1.Manager", "InitRDTimestamp", bus_property_append_uint64, "t", &m->initrd_timestamp.realtime },
376 { "org.freedesktop.systemd1.Manager", "InitRDTimestampMonotonic", bus_property_append_uint64, "t", &m->initrd_timestamp.monotonic },
377 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t", &m->startup_timestamp.realtime },
378 { "org.freedesktop.systemd1.Manager", "StartupTimestampMonotonic", bus_property_append_uint64, "t", &m->startup_timestamp.monotonic },
379 { "org.freedesktop.systemd1.Manager", "FinishTimestamp", bus_property_append_uint64, "t", &m->finish_timestamp.realtime },
380 { "org.freedesktop.systemd1.Manager", "FinishTimestampMonotonic", bus_property_append_uint64, "t",&m->finish_timestamp.monotonic },
381 { "org.freedesktop.systemd1.Manager", "LogLevel", bus_manager_append_log_level, "s", m, bus_manager_set_log_level },
382 { "org.freedesktop.systemd1.Manager", "LogTarget", bus_manager_append_log_target, "s", m, bus_manager_set_log_target },
383 { "org.freedesktop.systemd1.Manager", "NNames", bus_manager_append_n_names, "u", m },
384 { "org.freedesktop.systemd1.Manager", "NJobs", bus_manager_append_n_jobs, "u", m },
385 { "org.freedesktop.systemd1.Manager", "NInstalledJobs",bus_property_append_uint32, "u", &m->n_installed_jobs },
386 { "org.freedesktop.systemd1.Manager", "NFailedJobs", bus_property_append_uint32, "u", &m->n_failed_jobs },
387 { "org.freedesktop.systemd1.Manager", "Progress", bus_manager_append_progress, "d", m },
388 { "org.freedesktop.systemd1.Manager", "Environment", bus_property_append_strv, "as", m->environment },
389 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn", bus_property_append_bool, "b", &m->confirm_spawn },
390 { "org.freedesktop.systemd1.Manager", "ShowStatus", bus_property_append_bool, "b", &m->show_status },
391 { "org.freedesktop.systemd1.Manager", "UnitPath", bus_property_append_strv, "as", m->lookup_paths.unit_path },
392 { "org.freedesktop.systemd1.Manager", "NotifySocket", bus_property_append_string, "s", m->notify_socket },
393 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
394 { "org.freedesktop.systemd1.Manager", "MountAuto", bus_property_append_bool, "b", &m->mount_auto },
395 { "org.freedesktop.systemd1.Manager", "SwapAuto", bus_property_append_bool, "b", &m->swap_auto },
396 { "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
397 { "org.freedesktop.systemd1.Manager", "DefaultStandardOutput", bus_manager_append_exec_output, "s", &m->default_std_output },
398 { "org.freedesktop.systemd1.Manager", "DefaultStandardError", bus_manager_append_exec_output, "s", &m->default_std_error },
399 #ifdef HAVE_SYSV_COMPAT
400 { "org.freedesktop.systemd1.Manager", "SysVConsole", bus_property_append_bool, "b", &m->sysv_console },
401 { "org.freedesktop.systemd1.Manager", "SysVInitPath", bus_property_append_strv, "as", m->lookup_paths.sysvinit_path },
402 { "org.freedesktop.systemd1.Manager", "SysVRcndPath", bus_property_append_strv, "as", m->lookup_paths.sysvrcnd_path },
403 #endif
404 { NULL, NULL, NULL, NULL, NULL }
405 };
406
407 int r;
408 DBusError error;
409 DBusMessage *reply = NULL;
410 char * path = NULL;
411 JobType job_type = _JOB_TYPE_INVALID;
412 bool reload_if_possible = false;
413
414 assert(connection);
415 assert(message);
416 assert(m);
417
418 dbus_error_init(&error);
419
420 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
421 const char *name;
422 Unit *u;
423
424 if (!dbus_message_get_args(
425 message,
426 &error,
427 DBUS_TYPE_STRING, &name,
428 DBUS_TYPE_INVALID))
429 return bus_send_error_reply(connection, message, &error, -EINVAL);
430
431 if (!(u = manager_get_unit(m, name))) {
432 dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
433 return bus_send_error_reply(connection, message, &error, -ENOENT);
434 }
435
436 if (!(reply = dbus_message_new_method_return(message)))
437 goto oom;
438
439 if (!(path = unit_dbus_path(u)))
440 goto oom;
441
442 if (!dbus_message_append_args(
443 reply,
444 DBUS_TYPE_OBJECT_PATH, &path,
445 DBUS_TYPE_INVALID))
446 goto oom;
447 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
448 Unit *u;
449 uint32_t pid;
450
451 if (!dbus_message_get_args(
452 message,
453 &error,
454 DBUS_TYPE_UINT32, &pid,
455 DBUS_TYPE_INVALID))
456 return bus_send_error_reply(connection, message, &error, -EINVAL);
457
458 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
459 dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
460 return bus_send_error_reply(connection, message, &error, -ENOENT);
461 }
462
463 if (!(reply = dbus_message_new_method_return(message)))
464 goto oom;
465
466 if (!(path = unit_dbus_path(u)))
467 goto oom;
468
469 if (!dbus_message_append_args(
470 reply,
471 DBUS_TYPE_OBJECT_PATH, &path,
472 DBUS_TYPE_INVALID))
473 goto oom;
474 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
475 const char *name;
476 Unit *u;
477
478 if (!dbus_message_get_args(
479 message,
480 &error,
481 DBUS_TYPE_STRING, &name,
482 DBUS_TYPE_INVALID))
483 return bus_send_error_reply(connection, message, &error, -EINVAL);
484
485 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
486 return bus_send_error_reply(connection, message, &error, r);
487
488 if (!(reply = dbus_message_new_method_return(message)))
489 goto oom;
490
491 if (!(path = unit_dbus_path(u)))
492 goto oom;
493
494 if (!dbus_message_append_args(
495 reply,
496 DBUS_TYPE_OBJECT_PATH, &path,
497 DBUS_TYPE_INVALID))
498 goto oom;
499
500 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
501 job_type = JOB_START;
502 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
503 job_type = JOB_START;
504 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
505 job_type = JOB_STOP;
506 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
507 job_type = JOB_RELOAD;
508 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
509 job_type = JOB_RESTART;
510 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
511 job_type = JOB_TRY_RESTART;
512 else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
513 reload_if_possible = true;
514 job_type = JOB_RESTART;
515 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
516 reload_if_possible = true;
517 job_type = JOB_TRY_RESTART;
518 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
519 const char *name, *swho, *smode;
520 int32_t signo;
521 Unit *u;
522 KillMode mode;
523 KillWho who;
524
525 if (!dbus_message_get_args(
526 message,
527 &error,
528 DBUS_TYPE_STRING, &name,
529 DBUS_TYPE_STRING, &swho,
530 DBUS_TYPE_STRING, &smode,
531 DBUS_TYPE_INT32, &signo,
532 DBUS_TYPE_INVALID))
533 return bus_send_error_reply(connection, message, &error, -EINVAL);
534
535 if ((mode = kill_mode_from_string(smode)) < 0 ||
536 (who = kill_who_from_string(swho)) < 0 ||
537 signo <= 0 ||
538 signo >= _NSIG)
539 return bus_send_error_reply(connection, message, &error, -EINVAL);
540
541 if (!(u = manager_get_unit(m, name))) {
542 dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
543 return bus_send_error_reply(connection, message, &error, -ENOENT);
544 }
545
546 if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
547 return bus_send_error_reply(connection, message, &error, r);
548
549 if (!(reply = dbus_message_new_method_return(message)))
550 goto oom;
551
552 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
553 uint32_t id;
554 Job *j;
555
556 if (!dbus_message_get_args(
557 message,
558 &error,
559 DBUS_TYPE_UINT32, &id,
560 DBUS_TYPE_INVALID))
561 return bus_send_error_reply(connection, message, &error, -EINVAL);
562
563 if (!(j = manager_get_job(m, id))) {
564 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
565 return bus_send_error_reply(connection, message, &error, -ENOENT);
566 }
567
568 if (!(reply = dbus_message_new_method_return(message)))
569 goto oom;
570
571 if (!(path = job_dbus_path(j)))
572 goto oom;
573
574 if (!dbus_message_append_args(
575 reply,
576 DBUS_TYPE_OBJECT_PATH, &path,
577 DBUS_TYPE_INVALID))
578 goto oom;
579
580 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
581
582 manager_clear_jobs(m);
583
584 if (!(reply = dbus_message_new_method_return(message)))
585 goto oom;
586
587 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
588
589 manager_reset_failed(m);
590
591 if (!(reply = dbus_message_new_method_return(message)))
592 goto oom;
593
594 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
595 const char *name;
596 Unit *u;
597
598 if (!dbus_message_get_args(
599 message,
600 &error,
601 DBUS_TYPE_STRING, &name,
602 DBUS_TYPE_INVALID))
603 return bus_send_error_reply(connection, message, &error, -EINVAL);
604
605 if (!(u = manager_get_unit(m, name))) {
606 dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
607 return bus_send_error_reply(connection, message, &error, -ENOENT);
608 }
609
610 unit_reset_failed(u);
611
612 if (!(reply = dbus_message_new_method_return(message)))
613 goto oom;
614
615 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
616 DBusMessageIter iter, sub;
617 Iterator i;
618 Unit *u;
619 const char *k;
620
621 if (!(reply = dbus_message_new_method_return(message)))
622 goto oom;
623
624 dbus_message_iter_init_append(reply, &iter);
625
626 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
627 goto oom;
628
629 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
630 char *u_path, *j_path;
631 const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
632 DBusMessageIter sub2;
633 uint32_t job_id;
634 Unit *f;
635
636 if (k != u->meta.id)
637 continue;
638
639 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
640 goto oom;
641
642 description = unit_description(u);
643 load_state = unit_load_state_to_string(u->meta.load_state);
644 active_state = unit_active_state_to_string(unit_active_state(u));
645 sub_state = unit_sub_state_to_string(u);
646
647 f = unit_following(u);
648 following = f ? f->meta.id : "";
649
650 if (!(u_path = unit_dbus_path(u)))
651 goto oom;
652
653 if (u->meta.job) {
654 job_id = (uint32_t) u->meta.job->id;
655
656 if (!(j_path = job_dbus_path(u->meta.job))) {
657 free(u_path);
658 goto oom;
659 }
660
661 sjob_type = job_type_to_string(u->meta.job->type);
662 } else {
663 job_id = 0;
664 j_path = u_path;
665 sjob_type = "";
666 }
667
668 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
669 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
670 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
671 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
672 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
673 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
674 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
675 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
676 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
677 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
678 free(u_path);
679 if (u->meta.job)
680 free(j_path);
681 goto oom;
682 }
683
684 free(u_path);
685 if (u->meta.job)
686 free(j_path);
687
688 if (!dbus_message_iter_close_container(&sub, &sub2))
689 goto oom;
690 }
691
692 if (!dbus_message_iter_close_container(&iter, &sub))
693 goto oom;
694
695 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
696 DBusMessageIter iter, sub;
697 Iterator i;
698 Job *j;
699
700 if (!(reply = dbus_message_new_method_return(message)))
701 goto oom;
702
703 dbus_message_iter_init_append(reply, &iter);
704
705 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
706 goto oom;
707
708 HASHMAP_FOREACH(j, m->jobs, i) {
709 char *u_path, *j_path;
710 const char *state, *type;
711 uint32_t id;
712 DBusMessageIter sub2;
713
714 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
715 goto oom;
716
717 id = (uint32_t) j->id;
718 state = job_state_to_string(j->state);
719 type = job_type_to_string(j->type);
720
721 if (!(j_path = job_dbus_path(j)))
722 goto oom;
723
724 if (!(u_path = unit_dbus_path(j->unit))) {
725 free(j_path);
726 goto oom;
727 }
728
729 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
730 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
731 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
732 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
733 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
734 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
735 free(j_path);
736 free(u_path);
737 goto oom;
738 }
739
740 free(j_path);
741 free(u_path);
742
743 if (!dbus_message_iter_close_container(&sub, &sub2))
744 goto oom;
745 }
746
747 if (!dbus_message_iter_close_container(&iter, &sub))
748 goto oom;
749
750 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
751 char *client;
752 Set *s;
753
754 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
755 if (!(s = set_new(string_hash_func, string_compare_func)))
756 goto oom;
757
758 if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
759 set_free(s);
760 goto oom;
761 }
762 }
763
764 if (!(client = strdup(message_get_sender_with_fallback(message))))
765 goto oom;
766
767 if ((r = set_put(s, client)) < 0) {
768 free(client);
769 return bus_send_error_reply(connection, message, NULL, r);
770 }
771
772 if (!(reply = dbus_message_new_method_return(message)))
773 goto oom;
774
775 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
776 char *client;
777
778 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
779 dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
780 return bus_send_error_reply(connection, message, &error, -ENOENT);
781 }
782
783 free(client);
784
785 if (!(reply = dbus_message_new_method_return(message)))
786 goto oom;
787
788 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
789 FILE *f;
790 char *dump = NULL;
791 size_t size;
792
793 if (!(reply = dbus_message_new_method_return(message)))
794 goto oom;
795
796 if (!(f = open_memstream(&dump, &size)))
797 goto oom;
798
799 manager_dump_units(m, f, NULL);
800 manager_dump_jobs(m, f, NULL);
801
802 if (ferror(f)) {
803 fclose(f);
804 free(dump);
805 goto oom;
806 }
807
808 fclose(f);
809
810 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
811 free(dump);
812 goto oom;
813 }
814
815 free(dump);
816 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
817 const char *name;
818 dbus_bool_t cleanup;
819 Snapshot *s;
820
821 if (!dbus_message_get_args(
822 message,
823 &error,
824 DBUS_TYPE_STRING, &name,
825 DBUS_TYPE_BOOLEAN, &cleanup,
826 DBUS_TYPE_INVALID))
827 return bus_send_error_reply(connection, message, &error, -EINVAL);
828
829 if (name && name[0] == 0)
830 name = NULL;
831
832 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
833 return bus_send_error_reply(connection, message, &error, r);
834
835 if (!(reply = dbus_message_new_method_return(message)))
836 goto oom;
837
838 if (!(path = unit_dbus_path(UNIT(s))))
839 goto oom;
840
841 if (!dbus_message_append_args(
842 reply,
843 DBUS_TYPE_OBJECT_PATH, &path,
844 DBUS_TYPE_INVALID))
845 goto oom;
846
847 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
848 char *introspection = NULL;
849 FILE *f;
850 Iterator i;
851 Unit *u;
852 Job *j;
853 const char *k;
854 size_t size;
855
856 if (!(reply = dbus_message_new_method_return(message)))
857 goto oom;
858
859 /* We roll our own introspection code here, instead of
860 * relying on bus_default_message_handler() because we
861 * need to generate our introspection string
862 * dynamically. */
863
864 if (!(f = open_memstream(&introspection, &size)))
865 goto oom;
866
867 fputs(INTROSPECTION_BEGIN, f);
868
869 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
870 char *p;
871
872 if (k != u->meta.id)
873 continue;
874
875 if (!(p = bus_path_escape(k))) {
876 fclose(f);
877 free(introspection);
878 goto oom;
879 }
880
881 fprintf(f, "<node name=\"unit/%s\"/>", p);
882 free(p);
883 }
884
885 HASHMAP_FOREACH(j, m->jobs, i)
886 fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
887
888 fputs(INTROSPECTION_END, f);
889
890 if (ferror(f)) {
891 fclose(f);
892 free(introspection);
893 goto oom;
894 }
895
896 fclose(f);
897
898 if (!introspection)
899 goto oom;
900
901 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
902 free(introspection);
903 goto oom;
904 }
905
906 free(introspection);
907
908 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
909
910 assert(!m->queued_message);
911
912 /* Instead of sending the reply back right away, we
913 * just remember that we need to and then send it
914 * after the reload is finished. That way the caller
915 * knows when the reload finished. */
916
917 if (!(m->queued_message = dbus_message_new_method_return(message)))
918 goto oom;
919
920 m->queued_message_connection = connection;
921 m->exit_code = MANAGER_RELOAD;
922
923 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
924
925 if (!(reply = dbus_message_new_method_return(message)))
926 goto oom;
927
928 m->exit_code = MANAGER_REEXECUTE;
929
930 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
931
932 if (m->running_as == MANAGER_SYSTEM) {
933 dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
934 return bus_send_error_reply(connection, message, &error, -ENOTSUP);
935 }
936
937 if (!(reply = dbus_message_new_method_return(message)))
938 goto oom;
939
940 m->exit_code = MANAGER_EXIT;
941
942 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
943
944 if (m->running_as != MANAGER_SYSTEM) {
945 dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
946 return bus_send_error_reply(connection, message, &error, -ENOTSUP);
947 }
948
949 if (!(reply = dbus_message_new_method_return(message)))
950 goto oom;
951
952 m->exit_code = MANAGER_REBOOT;
953
954 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
955
956 if (m->running_as != MANAGER_SYSTEM) {
957 dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
958 return bus_send_error_reply(connection, message, &error, -ENOTSUP);
959 }
960
961 if (!(reply = dbus_message_new_method_return(message)))
962 goto oom;
963
964 m->exit_code = MANAGER_POWEROFF;
965
966 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
967
968 if (m->running_as != MANAGER_SYSTEM) {
969 dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
970 return bus_send_error_reply(connection, message, &error, -ENOTSUP);
971 }
972
973 if (!(reply = dbus_message_new_method_return(message)))
974 goto oom;
975
976 m->exit_code = MANAGER_HALT;
977
978 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
979
980 if (m->running_as != MANAGER_SYSTEM) {
981 dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
982 return bus_send_error_reply(connection, message, &error, -ENOTSUP);
983 }
984
985 if (!(reply = dbus_message_new_method_return(message)))
986 goto oom;
987
988 m->exit_code = MANAGER_KEXEC;
989
990 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
991 char **l = NULL, **e = NULL;
992
993 if ((r = bus_parse_strv(message, &l)) < 0) {
994 if (r == -ENOMEM)
995 goto oom;
996
997 return bus_send_error_reply(connection, message, NULL, r);
998 }
999
1000 e = strv_env_merge(2, m->environment, l);
1001 strv_free(l);
1002
1003 if (!e)
1004 goto oom;
1005
1006 if (!(reply = dbus_message_new_method_return(message))) {
1007 strv_free(e);
1008 goto oom;
1009 }
1010
1011 strv_free(m->environment);
1012 m->environment = e;
1013
1014 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
1015 char **l = NULL, **e = NULL;
1016
1017 if ((r = bus_parse_strv(message, &l)) < 0) {
1018 if (r == -ENOMEM)
1019 goto oom;
1020
1021 return bus_send_error_reply(connection, message, NULL, r);
1022 }
1023
1024 e = strv_env_delete(m->environment, 1, l);
1025 strv_free(l);
1026
1027 if (!e)
1028 goto oom;
1029
1030 if (!(reply = dbus_message_new_method_return(message))) {
1031 strv_free(e);
1032 goto oom;
1033 }
1034
1035 strv_free(m->environment);
1036 m->environment = e;
1037
1038 } else
1039 return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties);
1040
1041 if (job_type != _JOB_TYPE_INVALID) {
1042 const char *name, *smode, *old_name = NULL;
1043 JobMode mode;
1044 Job *j;
1045 Unit *u;
1046 bool b;
1047
1048 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
1049 b = dbus_message_get_args(
1050 message,
1051 &error,
1052 DBUS_TYPE_STRING, &old_name,
1053 DBUS_TYPE_STRING, &name,
1054 DBUS_TYPE_STRING, &smode,
1055 DBUS_TYPE_INVALID);
1056 else
1057 b = dbus_message_get_args(
1058 message,
1059 &error,
1060 DBUS_TYPE_STRING, &name,
1061 DBUS_TYPE_STRING, &smode,
1062 DBUS_TYPE_INVALID);
1063
1064 if (!b)
1065 return bus_send_error_reply(connection, message, &error, -EINVAL);
1066
1067 if (old_name)
1068 if (!(u = manager_get_unit(m, old_name)) ||
1069 !u->meta.job ||
1070 u->meta.job->type != JOB_START) {
1071 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1072 return bus_send_error_reply(connection, message, &error, -ENOENT);
1073 }
1074
1075
1076 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1077 dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1078 return bus_send_error_reply(connection, message, &error, -EINVAL);
1079 }
1080
1081 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1082 return bus_send_error_reply(connection, message, &error, r);
1083
1084 if (reload_if_possible && unit_can_reload(u)) {
1085 if (job_type == JOB_RESTART)
1086 job_type = JOB_RELOAD_OR_START;
1087 else if (job_type == JOB_TRY_RESTART)
1088 job_type = JOB_RELOAD;
1089 }
1090
1091 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
1092 (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
1093 ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1094 (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
1095 dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1096 return bus_send_error_reply(connection, message, &error, -EPERM);
1097 }
1098
1099 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1100 return bus_send_error_reply(connection, message, &error, r);
1101
1102 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1103 goto oom;
1104
1105 j->bus = connection;
1106
1107 if (!(reply = dbus_message_new_method_return(message)))
1108 goto oom;
1109
1110 if (!(path = job_dbus_path(j)))
1111 goto oom;
1112
1113 if (!dbus_message_append_args(
1114 reply,
1115 DBUS_TYPE_OBJECT_PATH, &path,
1116 DBUS_TYPE_INVALID))
1117 goto oom;
1118 }
1119
1120 if (reply) {
1121 if (!dbus_connection_send(connection, reply, NULL))
1122 goto oom;
1123
1124 dbus_message_unref(reply);
1125 }
1126
1127 free(path);
1128
1129 return DBUS_HANDLER_RESULT_HANDLED;
1130
1131 oom:
1132 free(path);
1133
1134 if (reply)
1135 dbus_message_unref(reply);
1136
1137 dbus_error_free(&error);
1138
1139 return DBUS_HANDLER_RESULT_NEED_MEMORY;
1140 }
1141
1142 const DBusObjectPathVTable bus_manager_vtable = {
1143 .message_function = bus_manager_message_handler
1144 };
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