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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
3f49d45a LP |
2 | |
3 | #include <errno.h> | |
a185c5aa | 4 | #include <string.h> |
3f49d45a | 5 | |
b5efdb8a | 6 | #include "alloc-util.h" |
96aad8d1 | 7 | #include "bus-common-errors.h" |
a6278b88 | 8 | #include "bus-label.h" |
3ffd4af2 LP |
9 | #include "bus-util.h" |
10 | #include "fd-util.h" | |
2a66c2a1 | 11 | #include "logind-brightness.h" |
118ecf32 | 12 | #include "logind-session-device.h" |
3ffd4af2 LP |
13 | #include "logind-session.h" |
14 | #include "logind.h" | |
36dd5ffd | 15 | #include "missing_capability.h" |
2a66c2a1 | 16 | #include "path-util.h" |
6eb7c172 | 17 | #include "signal-util.h" |
fa583ab1 | 18 | #include "stat-util.h" |
3ffd4af2 | 19 | #include "strv.h" |
3b92c086 | 20 | #include "user-util.h" |
3ffd4af2 | 21 | #include "util.h" |
3f49d45a | 22 | |
cc377381 LP |
23 | static int property_get_user( |
24 | sd_bus *bus, | |
25 | const char *path, | |
26 | const char *interface, | |
27 | const char *property, | |
28 | sd_bus_message *reply, | |
ebcf1f97 LP |
29 | void *userdata, |
30 | sd_bus_error *error) { | |
cc377381 LP |
31 | |
32 | _cleanup_free_ char *p = NULL; | |
33 | Session *s = userdata; | |
34 | ||
35 | assert(bus); | |
36 | assert(reply); | |
3f49d45a LP |
37 | assert(s); |
38 | ||
cc377381 LP |
39 | p = user_bus_path(s->user); |
40 | if (!p) | |
3f49d45a LP |
41 | return -ENOMEM; |
42 | ||
cc377381 LP |
43 | return sd_bus_message_append(reply, "(uo)", (uint32_t) s->user->uid, p); |
44 | } | |
3f49d45a | 45 | |
cc377381 LP |
46 | static int property_get_name( |
47 | sd_bus *bus, | |
48 | const char *path, | |
49 | const char *interface, | |
50 | const char *property, | |
51 | sd_bus_message *reply, | |
ebcf1f97 LP |
52 | void *userdata, |
53 | sd_bus_error *error) { | |
3f49d45a | 54 | |
cc377381 | 55 | Session *s = userdata; |
3f49d45a | 56 | |
cc377381 LP |
57 | assert(bus); |
58 | assert(reply); | |
59 | assert(s); | |
3f49d45a | 60 | |
cc377381 | 61 | return sd_bus_message_append(reply, "s", s->user->name); |
3f49d45a LP |
62 | } |
63 | ||
cc377381 LP |
64 | static int property_get_seat( |
65 | sd_bus *bus, | |
66 | const char *path, | |
67 | const char *interface, | |
68 | const char *property, | |
69 | sd_bus_message *reply, | |
ebcf1f97 LP |
70 | void *userdata, |
71 | sd_bus_error *error) { | |
3f49d45a | 72 | |
cc377381 LP |
73 | _cleanup_free_ char *p = NULL; |
74 | Session *s = userdata; | |
3f49d45a | 75 | |
cc377381 LP |
76 | assert(bus); |
77 | assert(reply); | |
78 | assert(s); | |
3f49d45a | 79 | |
cc377381 | 80 | p = s->seat ? seat_bus_path(s->seat) : strdup("/"); |
3f49d45a LP |
81 | if (!p) |
82 | return -ENOMEM; | |
83 | ||
cc377381 LP |
84 | return sd_bus_message_append(reply, "(so)", s->seat ? s->seat->id : "", p); |
85 | } | |
3f49d45a | 86 | |
cc377381 LP |
87 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, session_type, SessionType); |
88 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, session_class, SessionClass); | |
01adcd69 YW |
89 | static BUS_DEFINE_PROPERTY_GET(property_get_active, "b", Session, session_is_active); |
90 | static BUS_DEFINE_PROPERTY_GET2(property_get_state, "s", Session, session_get_state, session_state_to_string); | |
cc377381 LP |
91 | |
92 | static int property_get_idle_hint( | |
93 | sd_bus *bus, | |
94 | const char *path, | |
95 | const char *interface, | |
96 | const char *property, | |
97 | sd_bus_message *reply, | |
ebcf1f97 LP |
98 | void *userdata, |
99 | sd_bus_error *error) { | |
a185c5aa | 100 | |
cc377381 LP |
101 | Session *s = userdata; |
102 | ||
103 | assert(bus); | |
104 | assert(reply); | |
105 | assert(s); | |
106 | ||
107 | return sd_bus_message_append(reply, "b", session_get_idle_hint(s, NULL) > 0); | |
a185c5aa LP |
108 | } |
109 | ||
cc377381 LP |
110 | static int property_get_idle_since_hint( |
111 | sd_bus *bus, | |
112 | const char *path, | |
113 | const char *interface, | |
114 | const char *property, | |
115 | sd_bus_message *reply, | |
ebcf1f97 LP |
116 | void *userdata, |
117 | sd_bus_error *error) { | |
cc377381 LP |
118 | |
119 | Session *s = userdata; | |
5cb14b37 | 120 | dual_timestamp t = DUAL_TIMESTAMP_NULL; |
a185c5aa | 121 | uint64_t u; |
ca4f2b6d | 122 | int r; |
a185c5aa | 123 | |
cc377381 LP |
124 | assert(bus); |
125 | assert(reply); | |
a185c5aa LP |
126 | assert(s); |
127 | ||
ca4f2b6d VP |
128 | r = session_get_idle_hint(s, &t); |
129 | if (r < 0) | |
130 | return r; | |
131 | ||
a185c5aa LP |
132 | u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic; |
133 | ||
cc377381 | 134 | return sd_bus_message_append(reply, "t", u); |
a185c5aa LP |
135 | } |
136 | ||
42d35e13 VT |
137 | static int property_get_locked_hint( |
138 | sd_bus *bus, | |
139 | const char *path, | |
140 | const char *interface, | |
141 | const char *property, | |
142 | sd_bus_message *reply, | |
143 | void *userdata, | |
144 | sd_bus_error *error) { | |
145 | ||
146 | Session *s = userdata; | |
147 | ||
148 | assert(bus); | |
149 | assert(reply); | |
150 | assert(s); | |
151 | ||
152 | return sd_bus_message_append(reply, "b", session_get_locked_hint(s) > 0); | |
153 | } | |
154 | ||
19070062 | 155 | int bus_session_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 LP |
156 | Session *s = userdata; |
157 | int r; | |
0604381b | 158 | |
cc377381 | 159 | assert(message); |
0604381b LP |
160 | assert(s); |
161 | ||
c529695e LP |
162 | r = bus_verify_polkit_async( |
163 | message, | |
164 | CAP_KILL, | |
165 | "org.freedesktop.login1.manage", | |
403ed0e5 | 166 | NULL, |
c529695e LP |
167 | false, |
168 | s->user->uid, | |
169 | &s->manager->polkit_registry, | |
170 | error); | |
171 | if (r < 0) | |
172 | return r; | |
173 | if (r == 0) | |
174 | return 1; /* Will call us back */ | |
175 | ||
9bb69af4 | 176 | r = session_stop(s, true); |
cc377381 | 177 | if (r < 0) |
ebcf1f97 | 178 | return r; |
0604381b | 179 | |
df2d202e | 180 | return sd_bus_reply_method_return(message, NULL); |
0604381b LP |
181 | } |
182 | ||
19070062 | 183 | int bus_session_method_activate(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 LP |
184 | Session *s = userdata; |
185 | int r; | |
3f49d45a | 186 | |
cc377381 LP |
187 | assert(message); |
188 | assert(s); | |
3f49d45a | 189 | |
cc377381 LP |
190 | r = session_activate(s); |
191 | if (r < 0) | |
ebcf1f97 | 192 | return r; |
3f49d45a | 193 | |
df2d202e | 194 | return sd_bus_reply_method_return(message, NULL); |
cc377381 LP |
195 | } |
196 | ||
19070062 | 197 | int bus_session_method_lock(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 LP |
198 | Session *s = userdata; |
199 | int r; | |
200 | ||
cc377381 LP |
201 | assert(message); |
202 | assert(s); | |
3f49d45a | 203 | |
c529695e LP |
204 | r = bus_verify_polkit_async( |
205 | message, | |
206 | CAP_SYS_ADMIN, | |
207 | "org.freedesktop.login1.lock-sessions", | |
403ed0e5 | 208 | NULL, |
c529695e LP |
209 | false, |
210 | s->user->uid, | |
211 | &s->manager->polkit_registry, | |
212 | error); | |
213 | if (r < 0) | |
214 | return r; | |
215 | if (r == 0) | |
216 | return 1; /* Will call us back */ | |
217 | ||
218 | r = session_send_lock(s, strstr(sd_bus_message_get_member(message), "Lock")); | |
cc377381 | 219 | if (r < 0) |
ebcf1f97 | 220 | return r; |
3f49d45a | 221 | |
df2d202e | 222 | return sd_bus_reply_method_return(message, NULL); |
3f49d45a LP |
223 | } |
224 | ||
19070062 | 225 | static int method_set_idle_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
4afd3348 | 226 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
cc377381 LP |
227 | Session *s = userdata; |
228 | uid_t uid; | |
229 | int r, b; | |
d200735e | 230 | |
cc377381 LP |
231 | assert(message); |
232 | assert(s); | |
233 | ||
234 | r = sd_bus_message_read(message, "b", &b); | |
235 | if (r < 0) | |
ebcf1f97 | 236 | return r; |
d200735e | 237 | |
05bae4a6 | 238 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); |
5b12334d LP |
239 | if (r < 0) |
240 | return r; | |
241 | ||
05bae4a6 | 242 | r = sd_bus_creds_get_euid(creds, &uid); |
cc377381 | 243 | if (r < 0) |
ebcf1f97 | 244 | return r; |
cc377381 LP |
245 | |
246 | if (uid != 0 && uid != s->user->uid) | |
2b233285 | 247 | return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set idle hint"); |
cc377381 LP |
248 | |
249 | session_set_idle_hint(s, b); | |
3f49d45a | 250 | |
df2d202e | 251 | return sd_bus_reply_method_return(message, NULL); |
cc377381 LP |
252 | } |
253 | ||
42d35e13 VT |
254 | static int method_set_locked_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
255 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; | |
256 | Session *s = userdata; | |
257 | uid_t uid; | |
258 | int r, b; | |
259 | ||
260 | assert(message); | |
261 | assert(s); | |
262 | ||
263 | r = sd_bus_message_read(message, "b", &b); | |
264 | if (r < 0) | |
265 | return r; | |
266 | ||
267 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); | |
268 | if (r < 0) | |
269 | return r; | |
270 | ||
271 | r = sd_bus_creds_get_euid(creds, &uid); | |
272 | if (r < 0) | |
273 | return r; | |
274 | ||
275 | if (uid != 0 && uid != s->user->uid) | |
276 | return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set locked hint"); | |
277 | ||
278 | session_set_locked_hint(s, b); | |
279 | ||
280 | return sd_bus_reply_method_return(message, NULL); | |
281 | } | |
282 | ||
19070062 | 283 | int bus_session_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 LP |
284 | Session *s = userdata; |
285 | const char *swho; | |
286 | int32_t signo; | |
287 | KillWho who; | |
bef422ae LP |
288 | int r; |
289 | ||
3f49d45a | 290 | assert(message); |
cc377381 | 291 | assert(s); |
3f49d45a | 292 | |
cc377381 LP |
293 | r = sd_bus_message_read(message, "si", &swho, &signo); |
294 | if (r < 0) | |
ebcf1f97 | 295 | return r; |
cc377381 LP |
296 | |
297 | if (isempty(swho)) | |
298 | who = KILL_ALL; | |
299 | else { | |
300 | who = kill_who_from_string(swho); | |
301 | if (who < 0) | |
ebcf1f97 | 302 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho); |
cc377381 | 303 | } |
bef422ae | 304 | |
6eb7c172 | 305 | if (!SIGNAL_VALID(signo)) |
ebcf1f97 | 306 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo); |
bef422ae | 307 | |
c529695e LP |
308 | r = bus_verify_polkit_async( |
309 | message, | |
310 | CAP_KILL, | |
311 | "org.freedesktop.login1.manage", | |
403ed0e5 | 312 | NULL, |
c529695e LP |
313 | false, |
314 | s->user->uid, | |
315 | &s->manager->polkit_registry, | |
316 | error); | |
317 | if (r < 0) | |
318 | return r; | |
319 | if (r == 0) | |
320 | return 1; /* Will call us back */ | |
321 | ||
cc377381 LP |
322 | r = session_kill(s, who, signo); |
323 | if (r < 0) | |
ebcf1f97 | 324 | return r; |
bef422ae | 325 | |
df2d202e | 326 | return sd_bus_reply_method_return(message, NULL); |
cc377381 | 327 | } |
bef422ae | 328 | |
19070062 | 329 | static int method_take_control(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
4afd3348 | 330 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
cc377381 LP |
331 | Session *s = userdata; |
332 | int r, force; | |
333 | uid_t uid; | |
bef422ae | 334 | |
cc377381 LP |
335 | assert(message); |
336 | assert(s); | |
bef422ae | 337 | |
cc377381 LP |
338 | r = sd_bus_message_read(message, "b", &force); |
339 | if (r < 0) | |
ebcf1f97 | 340 | return r; |
bef422ae | 341 | |
05bae4a6 | 342 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); |
5b12334d LP |
343 | if (r < 0) |
344 | return r; | |
345 | ||
05bae4a6 | 346 | r = sd_bus_creds_get_euid(creds, &uid); |
cc377381 | 347 | if (r < 0) |
ebcf1f97 | 348 | return r; |
bef422ae | 349 | |
cc377381 | 350 | if (uid != 0 && (force || uid != s->user->uid)) |
ebcf1f97 | 351 | return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may take control"); |
bef422ae | 352 | |
dc6284e9 | 353 | r = session_set_controller(s, sd_bus_message_get_sender(message), force, true); |
cc377381 | 354 | if (r < 0) |
ebcf1f97 | 355 | return r; |
bef422ae | 356 | |
df2d202e | 357 | return sd_bus_reply_method_return(message, NULL); |
cc377381 | 358 | } |
bef422ae | 359 | |
19070062 | 360 | static int method_release_control(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 | 361 | Session *s = userdata; |
bef422ae | 362 | |
cc377381 LP |
363 | assert(message); |
364 | assert(s); | |
5bc849fd | 365 | |
cc377381 | 366 | if (!session_is_controller(s, sd_bus_message_get_sender(message))) |
ebcf1f97 | 367 | return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session"); |
5bc849fd | 368 | |
cc377381 | 369 | session_drop_controller(s); |
bef422ae | 370 | |
df2d202e | 371 | return sd_bus_reply_method_return(message, NULL); |
cc377381 | 372 | } |
bef422ae | 373 | |
19070062 | 374 | static int method_take_device(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 LP |
375 | Session *s = userdata; |
376 | uint32_t major, minor; | |
377 | SessionDevice *sd; | |
378 | dev_t dev; | |
379 | int r; | |
de07ab16 | 380 | |
cc377381 LP |
381 | assert(message); |
382 | assert(s); | |
de07ab16 | 383 | |
cc377381 LP |
384 | r = sd_bus_message_read(message, "uu", &major, &minor); |
385 | if (r < 0) | |
ebcf1f97 | 386 | return r; |
cc377381 | 387 | |
fa583ab1 LP |
388 | if (!DEVICE_MAJOR_VALID(major) || !DEVICE_MINOR_VALID(minor)) |
389 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Device major/minor is not valid."); | |
390 | ||
cc377381 | 391 | if (!session_is_controller(s, sd_bus_message_get_sender(message))) |
ebcf1f97 | 392 | return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session"); |
cc377381 LP |
393 | |
394 | dev = makedev(major, minor); | |
395 | sd = hashmap_get(s->devices, &dev); | |
396 | if (sd) | |
397 | /* We don't allow retrieving a device multiple times. | |
398 | * The related ReleaseDevice call is not ref-counted. | |
399 | * The caller should use dup() if it requires more | |
400 | * than one fd (it would be functionally | |
401 | * equivalent). */ | |
ebcf1f97 | 402 | return sd_bus_error_setf(error, BUS_ERROR_DEVICE_IS_TAKEN, "Device already taken"); |
cc377381 | 403 | |
aed24c4c | 404 | r = session_device_new(s, dev, true, &sd); |
cc377381 | 405 | if (r < 0) |
ebcf1f97 | 406 | return r; |
de07ab16 | 407 | |
aed24c4c FB |
408 | r = session_device_save(sd); |
409 | if (r < 0) | |
410 | goto error; | |
411 | ||
df2d202e | 412 | r = sd_bus_reply_method_return(message, "hb", sd->fd, !sd->active); |
cc377381 | 413 | if (r < 0) |
aed24c4c FB |
414 | goto error; |
415 | ||
416 | session_save(s); | |
2e681921 | 417 | return 1; |
118ecf32 | 418 | |
aed24c4c FB |
419 | error: |
420 | session_device_free(sd); | |
cc377381 LP |
421 | return r; |
422 | } | |
118ecf32 | 423 | |
19070062 | 424 | static int method_release_device(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 LP |
425 | Session *s = userdata; |
426 | uint32_t major, minor; | |
427 | SessionDevice *sd; | |
428 | dev_t dev; | |
429 | int r; | |
118ecf32 | 430 | |
cc377381 LP |
431 | assert(message); |
432 | assert(s); | |
118ecf32 | 433 | |
cc377381 LP |
434 | r = sd_bus_message_read(message, "uu", &major, &minor); |
435 | if (r < 0) | |
ebcf1f97 | 436 | return r; |
118ecf32 | 437 | |
fa583ab1 LP |
438 | if (!DEVICE_MAJOR_VALID(major) || !DEVICE_MINOR_VALID(minor)) |
439 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Device major/minor is not valid."); | |
440 | ||
cc377381 | 441 | if (!session_is_controller(s, sd_bus_message_get_sender(message))) |
ebcf1f97 | 442 | return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session"); |
118ecf32 | 443 | |
cc377381 LP |
444 | dev = makedev(major, minor); |
445 | sd = hashmap_get(s->devices, &dev); | |
446 | if (!sd) | |
ebcf1f97 | 447 | return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken"); |
118ecf32 | 448 | |
cc377381 | 449 | session_device_free(sd); |
aed24c4c FB |
450 | session_save(s); |
451 | ||
df2d202e | 452 | return sd_bus_reply_method_return(message, NULL); |
cc377381 | 453 | } |
118ecf32 | 454 | |
19070062 | 455 | static int method_pause_device_complete(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 LP |
456 | Session *s = userdata; |
457 | uint32_t major, minor; | |
458 | SessionDevice *sd; | |
459 | dev_t dev; | |
460 | int r; | |
118ecf32 | 461 | |
cc377381 LP |
462 | assert(message); |
463 | assert(s); | |
bef422ae | 464 | |
cc377381 LP |
465 | r = sd_bus_message_read(message, "uu", &major, &minor); |
466 | if (r < 0) | |
ebcf1f97 | 467 | return r; |
cc377381 | 468 | |
fa583ab1 LP |
469 | if (!DEVICE_MAJOR_VALID(major) || !DEVICE_MINOR_VALID(minor)) |
470 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Device major/minor is not valid."); | |
471 | ||
cc377381 | 472 | if (!session_is_controller(s, sd_bus_message_get_sender(message))) |
ebcf1f97 | 473 | return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session"); |
bef422ae | 474 | |
cc377381 LP |
475 | dev = makedev(major, minor); |
476 | sd = hashmap_get(s->devices, &dev); | |
477 | if (!sd) | |
ebcf1f97 | 478 | return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken"); |
bef422ae | 479 | |
cc377381 | 480 | session_device_complete_pause(sd); |
bef422ae | 481 | |
df2d202e | 482 | return sd_bus_reply_method_return(message, NULL); |
3f49d45a LP |
483 | } |
484 | ||
2a66c2a1 LP |
485 | static int method_set_brightness(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
486 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; | |
487 | _cleanup_(sd_device_unrefp) sd_device *d = NULL; | |
488 | const char *subsystem, *name, *seat; | |
489 | Session *s = userdata; | |
490 | uint32_t brightness; | |
491 | uid_t uid; | |
492 | int r; | |
493 | ||
494 | assert(message); | |
495 | assert(s); | |
496 | ||
497 | r = sd_bus_message_read(message, "ssu", &subsystem, &name, &brightness); | |
498 | if (r < 0) | |
499 | return r; | |
500 | ||
501 | if (!STR_IN_SET(subsystem, "backlight", "leds")) | |
502 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Subsystem type %s not supported, must be one of 'backlight' or 'leds'.", subsystem); | |
503 | if (!filename_is_valid(name)) | |
504 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Not a valid device name %s, refusing.", name); | |
505 | ||
506 | if (!s->seat) | |
507 | return sd_bus_error_setf(error, BUS_ERROR_NOT_YOUR_DEVICE, "Your session has no seat, refusing."); | |
508 | if (s->seat->active != s) | |
509 | return sd_bus_error_setf(error, BUS_ERROR_NOT_YOUR_DEVICE, "Session is not in foreground, refusing."); | |
510 | ||
511 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); | |
512 | if (r < 0) | |
513 | return r; | |
514 | ||
515 | r = sd_bus_creds_get_euid(creds, &uid); | |
516 | if (r < 0) | |
517 | return r; | |
518 | ||
519 | if (uid != 0 && uid != s->user->uid) | |
520 | return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may change brightness."); | |
521 | ||
522 | r = sd_device_new_from_subsystem_sysname(&d, subsystem, name); | |
523 | if (r < 0) | |
524 | return sd_bus_error_set_errnof(error, r, "Failed to open device %s:%s: %m", subsystem, name); | |
525 | ||
526 | if (sd_device_get_property_value(d, "ID_SEAT", &seat) >= 0 && !streq_ptr(seat, s->seat->id)) | |
527 | return sd_bus_error_setf(error, BUS_ERROR_NOT_YOUR_DEVICE, "Device %s:%s does not belong to your seat %s, refusing.", subsystem, name, s->seat->id); | |
528 | ||
529 | r = manager_write_brightness(s->manager, d, brightness, message); | |
530 | if (r < 0) | |
531 | return r; | |
532 | ||
533 | return 1; | |
534 | } | |
535 | ||
cc377381 LP |
536 | const sd_bus_vtable session_vtable[] = { |
537 | SD_BUS_VTABLE_START(0), | |
538 | ||
556089dc LP |
539 | SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Session, id), SD_BUS_VTABLE_PROPERTY_CONST), |
540 | SD_BUS_PROPERTY("User", "(uo)", property_get_user, 0, SD_BUS_VTABLE_PROPERTY_CONST), | |
541 | SD_BUS_PROPERTY("Name", "s", property_get_name, 0, SD_BUS_VTABLE_PROPERTY_CONST), | |
542 | BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Session, timestamp), SD_BUS_VTABLE_PROPERTY_CONST), | |
543 | SD_BUS_PROPERTY("VTNr", "u", NULL, offsetof(Session, vtnr), SD_BUS_VTABLE_PROPERTY_CONST), | |
544 | SD_BUS_PROPERTY("Seat", "(so)", property_get_seat, 0, SD_BUS_VTABLE_PROPERTY_CONST), | |
545 | SD_BUS_PROPERTY("TTY", "s", NULL, offsetof(Session, tty), SD_BUS_VTABLE_PROPERTY_CONST), | |
546 | SD_BUS_PROPERTY("Display", "s", NULL, offsetof(Session, display), SD_BUS_VTABLE_PROPERTY_CONST), | |
547 | SD_BUS_PROPERTY("Remote", "b", bus_property_get_bool, offsetof(Session, remote), SD_BUS_VTABLE_PROPERTY_CONST), | |
548 | SD_BUS_PROPERTY("RemoteHost", "s", NULL, offsetof(Session, remote_host), SD_BUS_VTABLE_PROPERTY_CONST), | |
549 | SD_BUS_PROPERTY("RemoteUser", "s", NULL, offsetof(Session, remote_user), SD_BUS_VTABLE_PROPERTY_CONST), | |
550 | SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Session, service), SD_BUS_VTABLE_PROPERTY_CONST), | |
a4cd87e9 | 551 | SD_BUS_PROPERTY("Desktop", "s", NULL, offsetof(Session, desktop), SD_BUS_VTABLE_PROPERTY_CONST), |
556089dc LP |
552 | SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Session, scope), SD_BUS_VTABLE_PROPERTY_CONST), |
553 | SD_BUS_PROPERTY("Leader", "u", bus_property_get_pid, offsetof(Session, leader), SD_BUS_VTABLE_PROPERTY_CONST), | |
554 | SD_BUS_PROPERTY("Audit", "u", NULL, offsetof(Session, audit_id), SD_BUS_VTABLE_PROPERTY_CONST), | |
555 | SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Session, type), SD_BUS_VTABLE_PROPERTY_CONST), | |
556 | SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Session, class), SD_BUS_VTABLE_PROPERTY_CONST), | |
cc377381 LP |
557 | SD_BUS_PROPERTY("Active", "b", property_get_active, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
558 | SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0), | |
559 | SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
560 | SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
561 | SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
42d35e13 | 562 | SD_BUS_PROPERTY("LockedHint", "b", property_get_locked_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
cc377381 | 563 | |
c529695e LP |
564 | SD_BUS_METHOD("Terminate", NULL, NULL, bus_session_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED), |
565 | SD_BUS_METHOD("Activate", NULL, NULL, bus_session_method_activate, SD_BUS_VTABLE_UNPRIVILEGED), | |
566 | SD_BUS_METHOD("Lock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED), | |
567 | SD_BUS_METHOD("Unlock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED), | |
adacb957 | 568 | SD_BUS_METHOD("SetIdleHint", "b", NULL, method_set_idle_hint, SD_BUS_VTABLE_UNPRIVILEGED), |
42d35e13 | 569 | SD_BUS_METHOD("SetLockedHint", "b", NULL, method_set_locked_hint, SD_BUS_VTABLE_UNPRIVILEGED), |
c529695e | 570 | SD_BUS_METHOD("Kill", "si", NULL, bus_session_method_kill, SD_BUS_VTABLE_UNPRIVILEGED), |
adacb957 LP |
571 | SD_BUS_METHOD("TakeControl", "b", NULL, method_take_control, SD_BUS_VTABLE_UNPRIVILEGED), |
572 | SD_BUS_METHOD("ReleaseControl", NULL, NULL, method_release_control, SD_BUS_VTABLE_UNPRIVILEGED), | |
573 | SD_BUS_METHOD("TakeDevice", "uu", "hb", method_take_device, SD_BUS_VTABLE_UNPRIVILEGED), | |
574 | SD_BUS_METHOD("ReleaseDevice", "uu", NULL, method_release_device, SD_BUS_VTABLE_UNPRIVILEGED), | |
575 | SD_BUS_METHOD("PauseDeviceComplete", "uu", NULL, method_pause_device_complete, SD_BUS_VTABLE_UNPRIVILEGED), | |
2a66c2a1 | 576 | SD_BUS_METHOD("SetBrightness", "ssu", NULL, method_set_brightness, SD_BUS_VTABLE_UNPRIVILEGED), |
cc377381 LP |
577 | |
578 | SD_BUS_SIGNAL("PauseDevice", "uus", 0), | |
579 | SD_BUS_SIGNAL("ResumeDevice", "uuh", 0), | |
580 | SD_BUS_SIGNAL("Lock", NULL, 0), | |
581 | SD_BUS_SIGNAL("Unlock", NULL, 0), | |
582 | ||
583 | SD_BUS_VTABLE_END | |
584 | }; | |
3f49d45a | 585 | |
f00c3121 | 586 | int session_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
3b92c086 LP |
587 | _cleanup_free_ char *e = NULL; |
588 | sd_bus_message *message; | |
3f49d45a | 589 | Manager *m = userdata; |
cc377381 | 590 | Session *session; |
3b92c086 | 591 | const char *p; |
927b1649 | 592 | int r; |
3f49d45a | 593 | |
cc377381 LP |
594 | assert(bus); |
595 | assert(path); | |
596 | assert(interface); | |
597 | assert(found); | |
598 | assert(m); | |
3f49d45a | 599 | |
3b92c086 LP |
600 | p = startswith(path, "/org/freedesktop/login1/session/"); |
601 | if (!p) | |
602 | return 0; | |
3f49d45a | 603 | |
3b92c086 LP |
604 | e = bus_label_unescape(p); |
605 | if (!e) | |
606 | return -ENOMEM; | |
927b1649 | 607 | |
3b92c086 LP |
608 | message = sd_bus_get_current_message(bus); |
609 | if (!message) | |
610 | return 0; | |
927b1649 | 611 | |
3b92c086 LP |
612 | r = manager_get_session_from_creds(m, message, e, error, &session); |
613 | if (r == -ENXIO) { | |
614 | sd_bus_error_free(error); | |
615 | return 0; | |
927b1649 | 616 | } |
3b92c086 LP |
617 | if (r < 0) |
618 | return r; | |
3f49d45a | 619 | |
cc377381 LP |
620 | *found = session; |
621 | return 1; | |
3f49d45a LP |
622 | } |
623 | ||
3f49d45a | 624 | char *session_bus_path(Session *s) { |
9444b1f2 | 625 | _cleanup_free_ char *t = NULL; |
3f49d45a LP |
626 | |
627 | assert(s); | |
628 | ||
a6278b88 | 629 | t = bus_label_escape(s->id); |
3f49d45a LP |
630 | if (!t) |
631 | return NULL; | |
632 | ||
4654e558 | 633 | return strappend("/org/freedesktop/login1/session/", t); |
3f49d45a | 634 | } |
da119395 | 635 | |
f00c3121 | 636 | int session_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { |
cc377381 | 637 | _cleanup_strv_free_ char **l = NULL; |
ca56b0a6 | 638 | sd_bus_message *message; |
cc377381 LP |
639 | Manager *m = userdata; |
640 | Session *session; | |
641 | Iterator i; | |
642 | int r; | |
643 | ||
644 | assert(bus); | |
645 | assert(path); | |
646 | assert(nodes); | |
647 | ||
648 | HASHMAP_FOREACH(session, m->sessions, i) { | |
649 | char *p; | |
650 | ||
651 | p = session_bus_path(session); | |
652 | if (!p) | |
653 | return -ENOMEM; | |
654 | ||
6e18964d ZJS |
655 | r = strv_consume(&l, p); |
656 | if (r < 0) | |
cc377381 | 657 | return r; |
cc377381 LP |
658 | } |
659 | ||
ca56b0a6 DH |
660 | message = sd_bus_get_current_message(bus); |
661 | if (message) { | |
4afd3348 | 662 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
ca56b0a6 | 663 | |
3b92c086 | 664 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds); |
ca56b0a6 | 665 | if (r >= 0) { |
3b92c086 LP |
666 | bool may_auto = false; |
667 | const char *name; | |
668 | ||
ca56b0a6 DH |
669 | r = sd_bus_creds_get_session(creds, &name); |
670 | if (r >= 0) { | |
671 | session = hashmap_get(m->sessions, name); | |
672 | if (session) { | |
673 | r = strv_extend(&l, "/org/freedesktop/login1/session/self"); | |
674 | if (r < 0) | |
675 | return r; | |
3b92c086 LP |
676 | |
677 | may_auto = true; | |
678 | } | |
679 | } | |
680 | ||
681 | if (!may_auto) { | |
682 | uid_t uid; | |
683 | ||
684 | r = sd_bus_creds_get_owner_uid(creds, &uid); | |
685 | if (r >= 0) { | |
686 | User *user; | |
687 | ||
688 | user = hashmap_get(m->users, UID_TO_PTR(uid)); | |
689 | may_auto = user && user->display; | |
ca56b0a6 DH |
690 | } |
691 | } | |
3b92c086 LP |
692 | |
693 | if (may_auto) { | |
694 | r = strv_extend(&l, "/org/freedesktop/login1/session/auto"); | |
695 | if (r < 0) | |
696 | return r; | |
697 | } | |
ca56b0a6 DH |
698 | } |
699 | } | |
b298e984 | 700 | |
1cc6c93a | 701 | *nodes = TAKE_PTR(l); |
cc377381 LP |
702 | return 1; |
703 | } | |
704 | ||
da119395 | 705 | int session_send_signal(Session *s, bool new_session) { |
ce0fc5f5 | 706 | _cleanup_free_ char *p = NULL; |
da119395 LP |
707 | |
708 | assert(s); | |
709 | ||
da119395 LP |
710 | p = session_bus_path(s); |
711 | if (!p) | |
4654e558 | 712 | return -ENOMEM; |
da119395 | 713 | |
cc377381 LP |
714 | return sd_bus_emit_signal( |
715 | s->manager->bus, | |
716 | "/org/freedesktop/login1", | |
717 | "org.freedesktop.login1.Manager", | |
718 | new_session ? "SessionNew" : "SessionRemoved", | |
719 | "so", s->id, p); | |
da119395 | 720 | } |
9418f147 | 721 | |
cc377381 | 722 | int session_send_changed(Session *s, const char *properties, ...) { |
ce0fc5f5 | 723 | _cleanup_free_ char *p = NULL; |
cc377381 | 724 | char **l; |
9418f147 LP |
725 | |
726 | assert(s); | |
727 | ||
ed18b08b LP |
728 | if (!s->started) |
729 | return 0; | |
730 | ||
9418f147 LP |
731 | p = session_bus_path(s); |
732 | if (!p) | |
733 | return -ENOMEM; | |
734 | ||
cc377381 | 735 | l = strv_from_stdarg_alloca(properties); |
9418f147 | 736 | |
cc377381 | 737 | return sd_bus_emit_properties_changed_strv(s->manager->bus, p, "org.freedesktop.login1.Session", l); |
9418f147 | 738 | } |
88e3dc90 LP |
739 | |
740 | int session_send_lock(Session *s, bool lock) { | |
ce0fc5f5 | 741 | _cleanup_free_ char *p = NULL; |
88e3dc90 LP |
742 | |
743 | assert(s); | |
744 | ||
745 | p = session_bus_path(s); | |
746 | if (!p) | |
747 | return -ENOMEM; | |
748 | ||
cc377381 LP |
749 | return sd_bus_emit_signal( |
750 | s->manager->bus, | |
751 | p, | |
752 | "org.freedesktop.login1.Session", | |
753 | lock ? "Lock" : "Unlock", | |
754 | NULL); | |
88e3dc90 | 755 | } |
7ba64386 LP |
756 | |
757 | int session_send_lock_all(Manager *m, bool lock) { | |
758 | Session *session; | |
759 | Iterator i; | |
760 | int r = 0; | |
761 | ||
762 | assert(m); | |
763 | ||
764 | HASHMAP_FOREACH(session, m->sessions, i) { | |
765 | int k; | |
766 | ||
767 | k = session_send_lock(session, lock); | |
768 | if (k < 0) | |
769 | r = k; | |
770 | } | |
771 | ||
772 | return r; | |
773 | } | |
fb6becb4 | 774 | |
b1951bc8 LP |
775 | static bool session_ready(Session *s) { |
776 | assert(s); | |
777 | ||
778 | /* Returns true when the session is ready, i.e. all jobs we enqueued for it are done (regardless if successful or not) */ | |
779 | ||
780 | return !s->scope_job && | |
781 | !s->user->service_job; | |
782 | } | |
783 | ||
cc377381 | 784 | int session_send_create_reply(Session *s, sd_bus_error *error) { |
4afd3348 | 785 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *c = NULL; |
cc377381 LP |
786 | _cleanup_close_ int fifo_fd = -1; |
787 | _cleanup_free_ char *p = NULL; | |
fb6becb4 LP |
788 | |
789 | assert(s); | |
790 | ||
b1951bc8 | 791 | /* This is called after the session scope and the user service were successfully created, and finishes where |
dd9b67aa | 792 | * bus_manager_create_session() left off. */ |
cba38758 | 793 | |
cc377381 LP |
794 | if (!s->create_message) |
795 | return 0; | |
fb6becb4 | 796 | |
b1951bc8 | 797 | if (!sd_bus_error_is_set(error) && !session_ready(s)) |
dd9b67aa LP |
798 | return 0; |
799 | ||
1b88ed3b | 800 | c = TAKE_PTR(s->create_message); |
cc377381 | 801 | if (error) |
df2d202e | 802 | return sd_bus_reply_method_error(c, error); |
fb6becb4 | 803 | |
cc377381 LP |
804 | fifo_fd = session_create_fifo(s); |
805 | if (fifo_fd < 0) | |
806 | return fifo_fd; | |
fb6becb4 | 807 | |
b1951bc8 | 808 | /* Update the session state file before we notify the client about the result. */ |
38fdcbed TA |
809 | session_save(s); |
810 | ||
cc377381 LP |
811 | p = session_bus_path(s); |
812 | if (!p) | |
813 | return -ENOMEM; | |
fb6becb4 | 814 | |
5a330cda | 815 | log_debug("Sending reply about created session: " |
236af516 DH |
816 | "id=%s object_path=%s uid=%u runtime_path=%s " |
817 | "session_fd=%d seat=%s vtnr=%u", | |
5a330cda ZJS |
818 | s->id, |
819 | p, | |
236af516 | 820 | (uint32_t) s->user->uid, |
5a330cda ZJS |
821 | s->user->runtime_path, |
822 | fifo_fd, | |
823 | s->seat ? s->seat->id : "", | |
824 | (uint32_t) s->vtnr); | |
825 | ||
cc377381 | 826 | return sd_bus_reply_method_return( |
baae0358 | 827 | c, "soshusub", |
cc377381 LP |
828 | s->id, |
829 | p, | |
830 | s->user->runtime_path, | |
831 | fifo_fd, | |
baae0358 | 832 | (uint32_t) s->user->uid, |
cc377381 LP |
833 | s->seat ? s->seat->id : "", |
834 | (uint32_t) s->vtnr, | |
835 | false); | |
fb6becb4 | 836 | } |