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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
3f49d45a LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2011 Lennart Poettering | |
3f49d45a LP |
6 | ***/ |
7 | ||
8 | #include <errno.h> | |
a185c5aa | 9 | #include <string.h> |
3f49d45a | 10 | |
b5efdb8a | 11 | #include "alloc-util.h" |
cc377381 | 12 | #include "bus-util.h" |
f97b34a6 | 13 | #include "format-util.h" |
b1d4f8e1 LP |
14 | #include "logind-user.h" |
15 | #include "logind.h" | |
6eb7c172 | 16 | #include "signal-util.h" |
b1d4f8e1 LP |
17 | #include "strv.h" |
18 | #include "user-util.h" | |
3f49d45a | 19 | |
01adcd69 YW |
20 | static BUS_DEFINE_PROPERTY_GET2(property_get_state, "s", User, user_get_state, user_state_to_string); |
21 | ||
cc377381 LP |
22 | static int property_get_display( |
23 | sd_bus *bus, | |
24 | const char *path, | |
25 | const char *interface, | |
26 | const char *property, | |
27 | sd_bus_message *reply, | |
ebcf1f97 LP |
28 | void *userdata, |
29 | sd_bus_error *error) { | |
3f49d45a | 30 | |
cc377381 LP |
31 | _cleanup_free_ char *p = NULL; |
32 | User *u = userdata; | |
3f49d45a | 33 | |
cc377381 LP |
34 | assert(bus); |
35 | assert(reply); | |
36 | assert(u); | |
3f49d45a | 37 | |
cc377381 LP |
38 | p = u->display ? session_bus_path(u->display) : strdup("/"); |
39 | if (!p) | |
3f49d45a LP |
40 | return -ENOMEM; |
41 | ||
cc377381 | 42 | return sd_bus_message_append(reply, "(so)", u->display ? u->display->id : "", p); |
3f49d45a LP |
43 | } |
44 | ||
cc377381 LP |
45 | static int property_get_sessions( |
46 | sd_bus *bus, | |
47 | const char *path, | |
48 | const char *interface, | |
49 | const char *property, | |
50 | sd_bus_message *reply, | |
ebcf1f97 LP |
51 | void *userdata, |
52 | sd_bus_error *error) { | |
cc377381 LP |
53 | |
54 | User *u = userdata; | |
3f49d45a | 55 | Session *session; |
cc377381 | 56 | int r; |
3f49d45a | 57 | |
cc377381 LP |
58 | assert(bus); |
59 | assert(reply); | |
3f49d45a LP |
60 | assert(u); |
61 | ||
cc377381 LP |
62 | r = sd_bus_message_open_container(reply, 'a', "(so)"); |
63 | if (r < 0) | |
64 | return r; | |
3f49d45a LP |
65 | |
66 | LIST_FOREACH(sessions_by_user, session, u->sessions) { | |
cc377381 | 67 | _cleanup_free_ char *p = NULL; |
3f49d45a LP |
68 | |
69 | p = session_bus_path(session); | |
70 | if (!p) | |
71 | return -ENOMEM; | |
72 | ||
cc377381 LP |
73 | r = sd_bus_message_append(reply, "(so)", session->id, p); |
74 | if (r < 0) | |
75 | return r; | |
3f49d45a | 76 | |
3f49d45a LP |
77 | } |
78 | ||
0f826101 | 79 | return sd_bus_message_close_container(reply); |
3f49d45a LP |
80 | } |
81 | ||
cc377381 LP |
82 | static int property_get_idle_hint( |
83 | sd_bus *bus, | |
84 | const char *path, | |
85 | const char *interface, | |
86 | const char *property, | |
87 | sd_bus_message *reply, | |
ebcf1f97 LP |
88 | void *userdata, |
89 | sd_bus_error *error) { | |
a185c5aa | 90 | |
cc377381 | 91 | User *u = userdata; |
77527da0 | 92 | |
cc377381 LP |
93 | assert(bus); |
94 | assert(reply); | |
95 | assert(u); | |
a185c5aa | 96 | |
cc377381 | 97 | return sd_bus_message_append(reply, "b", user_get_idle_hint(u, NULL) > 0); |
a185c5aa LP |
98 | } |
99 | ||
cc377381 LP |
100 | static int property_get_idle_since_hint( |
101 | sd_bus *bus, | |
102 | const char *path, | |
103 | const char *interface, | |
104 | const char *property, | |
105 | sd_bus_message *reply, | |
ebcf1f97 LP |
106 | void *userdata, |
107 | sd_bus_error *error) { | |
cc377381 LP |
108 | |
109 | User *u = userdata; | |
5cb14b37 | 110 | dual_timestamp t = DUAL_TIMESTAMP_NULL; |
a185c5aa LP |
111 | uint64_t k; |
112 | ||
cc377381 LP |
113 | assert(bus); |
114 | assert(reply); | |
a185c5aa LP |
115 | assert(u); |
116 | ||
117 | user_get_idle_hint(u, &t); | |
118 | k = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic; | |
119 | ||
cc377381 | 120 | return sd_bus_message_append(reply, "t", k); |
a185c5aa LP |
121 | } |
122 | ||
3a9f7a30 LP |
123 | static int property_get_linger( |
124 | sd_bus *bus, | |
125 | const char *path, | |
126 | const char *interface, | |
127 | const char *property, | |
128 | sd_bus_message *reply, | |
ebcf1f97 LP |
129 | void *userdata, |
130 | sd_bus_error *error) { | |
3a9f7a30 LP |
131 | |
132 | User *u = userdata; | |
133 | int r; | |
134 | ||
135 | assert(bus); | |
136 | assert(reply); | |
137 | assert(u); | |
138 | ||
139 | r = user_check_linger_file(u); | |
140 | ||
141 | return sd_bus_message_append(reply, "b", r > 0); | |
142 | } | |
143 | ||
19070062 | 144 | int bus_user_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 | 145 | User *u = userdata; |
3f49d45a LP |
146 | int r; |
147 | ||
cc377381 LP |
148 | assert(message); |
149 | assert(u); | |
3f49d45a | 150 | |
c529695e LP |
151 | r = bus_verify_polkit_async( |
152 | message, | |
153 | CAP_KILL, | |
154 | "org.freedesktop.login1.manage", | |
403ed0e5 | 155 | NULL, |
c529695e LP |
156 | false, |
157 | u->uid, | |
158 | &u->manager->polkit_registry, | |
159 | error); | |
160 | if (r < 0) | |
161 | return r; | |
162 | if (r == 0) | |
163 | return 1; /* Will call us back */ | |
164 | ||
9bb69af4 | 165 | r = user_stop(u, true); |
3f49d45a | 166 | if (r < 0) |
ebcf1f97 | 167 | return r; |
3f49d45a | 168 | |
df2d202e | 169 | return sd_bus_reply_method_return(message, NULL); |
3f49d45a LP |
170 | } |
171 | ||
19070062 | 172 | int bus_user_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
cc377381 LP |
173 | User *u = userdata; |
174 | int32_t signo; | |
a185c5aa LP |
175 | int r; |
176 | ||
3f49d45a | 177 | assert(message); |
cc377381 | 178 | assert(u); |
3f49d45a | 179 | |
c529695e LP |
180 | r = bus_verify_polkit_async( |
181 | message, | |
182 | CAP_KILL, | |
183 | "org.freedesktop.login1.manage", | |
403ed0e5 | 184 | NULL, |
c529695e LP |
185 | false, |
186 | u->uid, | |
187 | &u->manager->polkit_registry, | |
188 | error); | |
189 | if (r < 0) | |
190 | return r; | |
191 | if (r == 0) | |
192 | return 1; /* Will call us back */ | |
193 | ||
cc377381 LP |
194 | r = sd_bus_message_read(message, "i", &signo); |
195 | if (r < 0) | |
ebcf1f97 | 196 | return r; |
a185c5aa | 197 | |
6eb7c172 | 198 | if (!SIGNAL_VALID(signo)) |
ebcf1f97 | 199 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo); |
a185c5aa | 200 | |
cc377381 LP |
201 | r = user_kill(u, signo); |
202 | if (r < 0) | |
ebcf1f97 | 203 | return r; |
a185c5aa | 204 | |
df2d202e | 205 | return sd_bus_reply_method_return(message, NULL); |
3f49d45a LP |
206 | } |
207 | ||
cc377381 LP |
208 | const sd_bus_vtable user_vtable[] = { |
209 | SD_BUS_VTABLE_START(0), | |
210 | ||
556089dc LP |
211 | SD_BUS_PROPERTY("UID", "u", bus_property_get_uid, offsetof(User, uid), SD_BUS_VTABLE_PROPERTY_CONST), |
212 | SD_BUS_PROPERTY("GID", "u", bus_property_get_gid, offsetof(User, gid), SD_BUS_VTABLE_PROPERTY_CONST), | |
213 | SD_BUS_PROPERTY("Name", "s", NULL, offsetof(User, name), SD_BUS_VTABLE_PROPERTY_CONST), | |
214 | BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(User, timestamp), SD_BUS_VTABLE_PROPERTY_CONST), | |
215 | SD_BUS_PROPERTY("RuntimePath", "s", NULL, offsetof(User, runtime_path), SD_BUS_VTABLE_PROPERTY_CONST), | |
216 | SD_BUS_PROPERTY("Service", "s", NULL, offsetof(User, service), SD_BUS_VTABLE_PROPERTY_CONST), | |
217 | SD_BUS_PROPERTY("Slice", "s", NULL, offsetof(User, slice), SD_BUS_VTABLE_PROPERTY_CONST), | |
952d3260 | 218 | SD_BUS_PROPERTY("Display", "(so)", property_get_display, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
cc377381 | 219 | SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0), |
91ab7b01 | 220 | SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, 0), |
cc377381 LP |
221 | SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
222 | SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
223 | SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
3a9f7a30 | 224 | SD_BUS_PROPERTY("Linger", "b", property_get_linger, 0, 0), |
cc377381 | 225 | |
c529695e LP |
226 | SD_BUS_METHOD("Terminate", NULL, NULL, bus_user_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED), |
227 | SD_BUS_METHOD("Kill", "i", NULL, bus_user_method_kill, SD_BUS_VTABLE_UNPRIVILEGED), | |
cc377381 LP |
228 | |
229 | SD_BUS_VTABLE_END | |
230 | }; | |
3f49d45a | 231 | |
f00c3121 | 232 | int user_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
3f49d45a | 233 | Manager *m = userdata; |
309a29df | 234 | uid_t uid; |
cc377381 | 235 | User *user; |
3f49d45a LP |
236 | int r; |
237 | ||
cc377381 LP |
238 | assert(bus); |
239 | assert(path); | |
240 | assert(interface); | |
241 | assert(found); | |
242 | assert(m); | |
3f49d45a | 243 | |
927b1649 LP |
244 | if (streq(path, "/org/freedesktop/login1/user/self")) { |
245 | sd_bus_message *message; | |
3f49d45a | 246 | |
19befb2d | 247 | message = sd_bus_get_current_message(bus); |
927b1649 LP |
248 | if (!message) |
249 | return 0; | |
250 | ||
e4d2984b | 251 | r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user); |
927b1649 | 252 | if (r < 0) |
5b12334d | 253 | return r; |
927b1649 | 254 | } else { |
927b1649 | 255 | const char *p; |
3f49d45a | 256 | |
927b1649 LP |
257 | p = startswith(path, "/org/freedesktop/login1/user/_"); |
258 | if (!p) | |
259 | return 0; | |
260 | ||
309a29df | 261 | r = parse_uid(p, &uid); |
2ac0ab59 LP |
262 | if (r < 0) |
263 | return 0; | |
309a29df | 264 | |
2ac0ab59 LP |
265 | user = hashmap_get(m->users, UID_TO_PTR(uid)); |
266 | if (!user) | |
267 | return 0; | |
268 | } | |
3f49d45a | 269 | |
cc377381 LP |
270 | *found = user; |
271 | return 1; | |
3f49d45a LP |
272 | } |
273 | ||
3f49d45a LP |
274 | char *user_bus_path(User *u) { |
275 | char *s; | |
276 | ||
277 | assert(u); | |
278 | ||
de0671ee | 279 | if (asprintf(&s, "/org/freedesktop/login1/user/_"UID_FMT, u->uid) < 0) |
3f49d45a LP |
280 | return NULL; |
281 | ||
282 | return s; | |
283 | } | |
da119395 | 284 | |
f00c3121 | 285 | int user_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { |
cc377381 | 286 | _cleanup_strv_free_ char **l = NULL; |
ca56b0a6 | 287 | sd_bus_message *message; |
cc377381 LP |
288 | Manager *m = userdata; |
289 | User *user; | |
290 | Iterator i; | |
291 | int r; | |
da119395 | 292 | |
cc377381 LP |
293 | assert(bus); |
294 | assert(path); | |
295 | assert(nodes); | |
da119395 | 296 | |
cc377381 LP |
297 | HASHMAP_FOREACH(user, m->users, i) { |
298 | char *p; | |
da119395 | 299 | |
cc377381 LP |
300 | p = user_bus_path(user); |
301 | if (!p) | |
302 | return -ENOMEM; | |
da119395 | 303 | |
6e18964d ZJS |
304 | r = strv_consume(&l, p); |
305 | if (r < 0) | |
cc377381 | 306 | return r; |
cc377381 | 307 | } |
da119395 | 308 | |
ca56b0a6 DH |
309 | message = sd_bus_get_current_message(bus); |
310 | if (message) { | |
4afd3348 | 311 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
ca56b0a6 DH |
312 | uid_t uid; |
313 | ||
314 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds); | |
315 | if (r >= 0) { | |
316 | r = sd_bus_creds_get_owner_uid(creds, &uid); | |
317 | if (r >= 0) { | |
318 | user = hashmap_get(m->users, UID_TO_PTR(uid)); | |
319 | if (user) { | |
320 | r = strv_extend(&l, "/org/freedesktop/login1/user/self"); | |
321 | if (r < 0) | |
322 | return r; | |
323 | } | |
324 | } | |
325 | } | |
326 | } | |
b298e984 | 327 | |
1cc6c93a | 328 | *nodes = TAKE_PTR(l); |
da119395 | 329 | |
cc377381 LP |
330 | return 1; |
331 | } | |
332 | ||
333 | int user_send_signal(User *u, bool new_user) { | |
334 | _cleanup_free_ char *p = NULL; | |
da119395 | 335 | |
cc377381 LP |
336 | assert(u); |
337 | ||
338 | p = user_bus_path(u); | |
339 | if (!p) | |
4654e558 | 340 | return -ENOMEM; |
da119395 | 341 | |
cc377381 LP |
342 | return sd_bus_emit_signal( |
343 | u->manager->bus, | |
344 | "/org/freedesktop/login1", | |
345 | "org.freedesktop.login1.Manager", | |
346 | new_user ? "UserNew" : "UserRemoved", | |
347 | "uo", (uint32_t) u->uid, p); | |
da119395 | 348 | } |
9418f147 | 349 | |
cc377381 | 350 | int user_send_changed(User *u, const char *properties, ...) { |
ce0fc5f5 | 351 | _cleanup_free_ char *p = NULL; |
cc377381 | 352 | char **l; |
9418f147 LP |
353 | |
354 | assert(u); | |
355 | ||
ed18b08b LP |
356 | if (!u->started) |
357 | return 0; | |
358 | ||
9418f147 LP |
359 | p = user_bus_path(u); |
360 | if (!p) | |
361 | return -ENOMEM; | |
362 | ||
cc377381 | 363 | l = strv_from_stdarg_alloca(properties); |
9418f147 | 364 | |
cc377381 | 365 | return sd_bus_emit_properties_changed_strv(u->manager->bus, p, "org.freedesktop.login1.User", l); |
9418f147 | 366 | } |