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