435 lines
13 KiB
C
435 lines
13 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
|
|
|
#include <errno.h>
|
|
|
|
#include "alloc-util.h"
|
|
#include "bus-get-properties.h"
|
|
#include "bus-polkit.h"
|
|
#include "bus-util.h"
|
|
#include "format-util.h"
|
|
#include "logind-dbus.h"
|
|
#include "logind-session-dbus.h"
|
|
#include "logind-user-dbus.h"
|
|
#include "logind-user.h"
|
|
#include "logind.h"
|
|
#include "missing_capability.h"
|
|
#include "signal-util.h"
|
|
#include "strv.h"
|
|
#include "user-util.h"
|
|
|
|
static int property_get_uid(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
User *u = userdata;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(u);
|
|
|
|
return sd_bus_message_append(reply, "u", (uint32_t) u->user_record->uid);
|
|
}
|
|
|
|
static int property_get_gid(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
User *u = userdata;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(u);
|
|
|
|
return sd_bus_message_append(reply, "u", (uint32_t) u->user_record->gid);
|
|
}
|
|
|
|
static int property_get_name(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
User *u = userdata;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(u);
|
|
|
|
return sd_bus_message_append(reply, "s", u->user_record->user_name);
|
|
}
|
|
|
|
static BUS_DEFINE_PROPERTY_GET2(property_get_state, "s", User, user_get_state, user_state_to_string);
|
|
|
|
static int property_get_display(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
_cleanup_free_ char *p = NULL;
|
|
User *u = userdata;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(u);
|
|
|
|
p = u->display ? session_bus_path(u->display) : strdup("/");
|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
return sd_bus_message_append(reply, "(so)", u->display ? u->display->id : "", p);
|
|
}
|
|
|
|
static int property_get_sessions(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
User *u = userdata;
|
|
Session *session;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(u);
|
|
|
|
r = sd_bus_message_open_container(reply, 'a', "(so)");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
LIST_FOREACH(sessions_by_user, session, u->sessions) {
|
|
_cleanup_free_ char *p = NULL;
|
|
|
|
p = session_bus_path(session);
|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
r = sd_bus_message_append(reply, "(so)", session->id, p);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
}
|
|
|
|
return sd_bus_message_close_container(reply);
|
|
}
|
|
|
|
static int property_get_idle_hint(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
User *u = userdata;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(u);
|
|
|
|
return sd_bus_message_append(reply, "b", user_get_idle_hint(u, NULL) > 0);
|
|
}
|
|
|
|
static int property_get_idle_since_hint(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
User *u = userdata;
|
|
dual_timestamp t = DUAL_TIMESTAMP_NULL;
|
|
uint64_t k;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(u);
|
|
|
|
(void) user_get_idle_hint(u, &t);
|
|
k = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
|
|
|
|
return sd_bus_message_append(reply, "t", k);
|
|
}
|
|
|
|
static int property_get_linger(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
User *u = userdata;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(u);
|
|
|
|
r = user_check_linger_file(u);
|
|
|
|
return sd_bus_message_append(reply, "b", r > 0);
|
|
}
|
|
|
|
int bus_user_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
|
|
User *u = userdata;
|
|
int r;
|
|
|
|
assert(message);
|
|
assert(u);
|
|
|
|
r = bus_verify_polkit_async(
|
|
message,
|
|
CAP_KILL,
|
|
"org.freedesktop.login1.manage",
|
|
NULL,
|
|
false,
|
|
u->user_record->uid,
|
|
&u->manager->polkit_registry,
|
|
error);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
return 1; /* Will call us back */
|
|
|
|
r = user_stop(u, /* force */ true);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return sd_bus_reply_method_return(message, NULL);
|
|
}
|
|
|
|
int bus_user_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
|
|
User *u = userdata;
|
|
int32_t signo;
|
|
int r;
|
|
|
|
assert(message);
|
|
assert(u);
|
|
|
|
r = bus_verify_polkit_async(
|
|
message,
|
|
CAP_KILL,
|
|
"org.freedesktop.login1.manage",
|
|
NULL,
|
|
false,
|
|
u->user_record->uid,
|
|
&u->manager->polkit_registry,
|
|
error);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
return 1; /* Will call us back */
|
|
|
|
r = sd_bus_message_read(message, "i", &signo);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!SIGNAL_VALID(signo))
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
|
|
|
|
r = user_kill(u, signo);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return sd_bus_reply_method_return(message, NULL);
|
|
}
|
|
|
|
static int user_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
|
|
Manager *m = userdata;
|
|
uid_t uid;
|
|
User *user;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(path);
|
|
assert(interface);
|
|
assert(found);
|
|
assert(m);
|
|
|
|
if (streq(path, "/org/freedesktop/login1/user/self")) {
|
|
sd_bus_message *message;
|
|
|
|
message = sd_bus_get_current_message(bus);
|
|
|
|
r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
|
|
if (r == -ENXIO) {
|
|
sd_bus_error_free(error);
|
|
return 0;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
} else {
|
|
const char *p;
|
|
|
|
p = startswith(path, "/org/freedesktop/login1/user/_");
|
|
if (!p)
|
|
return 0;
|
|
|
|
r = parse_uid(p, &uid);
|
|
if (r < 0)
|
|
return 0;
|
|
|
|
user = hashmap_get(m->users, UID_TO_PTR(uid));
|
|
if (!user)
|
|
return 0;
|
|
}
|
|
|
|
*found = user;
|
|
return 1;
|
|
}
|
|
|
|
char *user_bus_path(User *u) {
|
|
char *s;
|
|
|
|
assert(u);
|
|
|
|
if (asprintf(&s, "/org/freedesktop/login1/user/_"UID_FMT, u->user_record->uid) < 0)
|
|
return NULL;
|
|
|
|
return s;
|
|
}
|
|
|
|
static int user_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
|
|
_cleanup_strv_free_ char **l = NULL;
|
|
sd_bus_message *message;
|
|
Manager *m = userdata;
|
|
User *user;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(path);
|
|
assert(nodes);
|
|
|
|
HASHMAP_FOREACH(user, m->users) {
|
|
char *p;
|
|
|
|
p = user_bus_path(user);
|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
r = strv_consume(&l, p);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
message = sd_bus_get_current_message(bus);
|
|
if (message) {
|
|
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
|
|
|
|
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
|
|
if (r >= 0) {
|
|
uid_t uid;
|
|
|
|
r = sd_bus_creds_get_owner_uid(creds, &uid);
|
|
if (r >= 0) {
|
|
user = hashmap_get(m->users, UID_TO_PTR(uid));
|
|
if (user) {
|
|
r = strv_extend(&l, "/org/freedesktop/login1/user/self");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
*nodes = TAKE_PTR(l);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static const sd_bus_vtable user_vtable[] = {
|
|
SD_BUS_VTABLE_START(0),
|
|
|
|
SD_BUS_PROPERTY("UID", "u", property_get_uid, 0, SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("GID", "u", property_get_gid, 0, SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("Name", "s", property_get_name, 0, SD_BUS_VTABLE_PROPERTY_CONST),
|
|
BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(User, timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("RuntimePath", "s", NULL, offsetof(User, runtime_path), SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("Service", "s", NULL, offsetof(User, service), SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("Slice", "s", NULL, offsetof(User, slice), SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("Display", "(so)", property_get_display, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0),
|
|
SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, 0),
|
|
SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("Linger", "b", property_get_linger, 0, 0),
|
|
|
|
SD_BUS_METHOD("Terminate", NULL, NULL, bus_user_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED),
|
|
SD_BUS_METHOD_WITH_NAMES("Kill",
|
|
"i",
|
|
SD_BUS_PARAM(signal_number),
|
|
NULL,,
|
|
bus_user_method_kill,
|
|
SD_BUS_VTABLE_UNPRIVILEGED),
|
|
|
|
SD_BUS_VTABLE_END
|
|
};
|
|
|
|
const BusObjectImplementation user_object = {
|
|
"/org/freedesktop/login1/user",
|
|
"org.freedesktop.login1.User",
|
|
.fallback_vtables = BUS_FALLBACK_VTABLES({user_vtable, user_object_find}),
|
|
.node_enumerator = user_node_enumerator,
|
|
};
|
|
|
|
int user_send_signal(User *u, bool new_user) {
|
|
_cleanup_free_ char *p = NULL;
|
|
|
|
assert(u);
|
|
|
|
p = user_bus_path(u);
|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
return sd_bus_emit_signal(
|
|
u->manager->bus,
|
|
"/org/freedesktop/login1",
|
|
"org.freedesktop.login1.Manager",
|
|
new_user ? "UserNew" : "UserRemoved",
|
|
"uo", (uint32_t) u->user_record->uid, p);
|
|
}
|
|
|
|
int user_send_changed(User *u, const char *properties, ...) {
|
|
_cleanup_free_ char *p = NULL;
|
|
char **l;
|
|
|
|
assert(u);
|
|
|
|
if (!u->started)
|
|
return 0;
|
|
|
|
p = user_bus_path(u);
|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
l = strv_from_stdarg_alloca(properties);
|
|
|
|
return sd_bus_emit_properties_changed_strv(u->manager->bus, p, "org.freedesktop.login1.User", l);
|
|
}
|