/
logind-session-dbus.c
1091 lines (858 loc) · 38 KB
/
logind-session-dbus.c
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include "alloc-util.h"
#include "bus-common-errors.h"
#include "bus-get-properties.h"
#include "bus-label.h"
#include "bus-polkit.h"
#include "bus-util.h"
#include "devnum-util.h"
#include "fd-util.h"
#include "logind-brightness.h"
#include "logind-dbus.h"
#include "logind-polkit.h"
#include "logind-seat-dbus.h"
#include "logind-session-dbus.h"
#include "logind-session-device.h"
#include "logind-session.h"
#include "logind-user-dbus.h"
#include "logind.h"
#include "missing_capability.h"
#include "path-util.h"
#include "signal-util.h"
#include "strv.h"
#include "terminal-util.h"
#include "user-util.h"
static int property_get_user(
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;
Session *s = ASSERT_PTR(userdata);
assert(bus);
assert(reply);
p = user_bus_path(s->user);
if (!p)
return -ENOMEM;
return sd_bus_message_append(reply, "(uo)", (uint32_t) s->user->user_record->uid, p);
}
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) {
Session *s = ASSERT_PTR(userdata);
assert(bus);
assert(reply);
return sd_bus_message_append(reply, "s", s->user->user_record->user_name);
}
static int property_get_seat(
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;
Session *s = ASSERT_PTR(userdata);
assert(bus);
assert(reply);
p = s->seat ? seat_bus_path(s->seat) : strdup("/");
if (!p)
return -ENOMEM;
return sd_bus_message_append(reply, "(so)", s->seat ? s->seat->id : "", p);
}
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, session_type, SessionType);
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, session_class, SessionClass);
static BUS_DEFINE_PROPERTY_GET(property_get_active, "b", Session, session_is_active);
static BUS_DEFINE_PROPERTY_GET2(property_get_state, "s", Session, session_get_state, session_state_to_string);
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) {
Session *s = ASSERT_PTR(userdata);
assert(bus);
assert(reply);
return sd_bus_message_append(reply, "b", session_get_idle_hint(s, 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) {
Session *s = ASSERT_PTR(userdata);
dual_timestamp t = DUAL_TIMESTAMP_NULL;
uint64_t u;
int r;
assert(bus);
assert(reply);
r = session_get_idle_hint(s, &t);
if (r < 0)
return r;
u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
return sd_bus_message_append(reply, "t", u);
}
static int property_get_locked_hint(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
assert(bus);
assert(reply);
return sd_bus_message_append(reply, "b", session_get_locked_hint(s) > 0);
}
int bus_session_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
int r;
assert(message);
r = bus_verify_polkit_async_full(
message,
"org.freedesktop.login1.manage",
/* details= */ NULL,
s->user->user_record->uid,
/* flags= */ 0,
&s->manager->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = session_stop(s, /* force = */ true);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
int bus_session_method_activate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
int r;
assert(message);
r = check_polkit_chvt(message, s->manager, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = session_activate(s);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
int bus_session_method_lock(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
int r;
assert(message);
r = bus_verify_polkit_async_full(
message,
"org.freedesktop.login1.lock-sessions",
/* details= */ NULL,
s->user->user_record->uid,
/* flags= */ 0,
&s->manager->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = session_send_lock(s, /* lock= */ strstr(sd_bus_message_get_member(message), "Lock"));
if (r == -ENOTTY)
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Session does not support lock screen.");
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_set_idle_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
Session *s = ASSERT_PTR(userdata);
uid_t uid;
int r, b;
assert(message);
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_euid(creds, &uid);
if (r < 0)
return r;
if (uid != 0 && uid != s->user->user_record->uid)
return sd_bus_error_set(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set idle hint");
r = session_set_idle_hint(s, b);
if (r == -ENOTTY)
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Idle hint control is not supported on non-graphical and non-user sessions.");
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_set_locked_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
Session *s = ASSERT_PTR(userdata);
uid_t uid;
int r, b;
assert(message);
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_euid(creds, &uid);
if (r < 0)
return r;
if (uid != 0 && uid != s->user->user_record->uid)
return sd_bus_error_set(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set locked hint");
r = session_set_locked_hint(s, b);
if (r == -ENOTTY)
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Session does not support lock screen.");
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
int bus_session_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
const char *swho;
int32_t signo;
KillWho who;
int r;
assert(message);
r = sd_bus_message_read(message, "si", &swho, &signo);
if (r < 0)
return r;
if (isempty(swho))
who = KILL_ALL;
else {
who = kill_who_from_string(swho);
if (who < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho);
}
if (!SIGNAL_VALID(signo))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
r = bus_verify_polkit_async_full(
message,
"org.freedesktop.login1.manage",
/* details= */ NULL,
s->user->user_record->uid,
/* flags= */ 0,
&s->manager->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = session_kill(s, who, signo);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_take_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
Session *s = ASSERT_PTR(userdata);
int r, force;
uid_t uid;
assert(message);
r = sd_bus_message_read(message, "b", &force);
if (r < 0)
return r;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_euid(creds, &uid);
if (r < 0)
return r;
if (uid != 0 && (force || uid != s->user->user_record->uid))
return sd_bus_error_set(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may take control");
r = session_set_controller(s, sd_bus_message_get_sender(message), force, true);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_release_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
assert(message);
if (!session_is_controller(s, sd_bus_message_get_sender(message)))
return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
session_drop_controller(s);
return sd_bus_reply_method_return(message, NULL);
}
static int method_set_type(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
const char *t;
SessionType type;
int r;
assert(message);
r = sd_bus_message_read(message, "s", &t);
if (r < 0)
return r;
type = session_type_from_string(t);
if (type < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
"Invalid session type '%s'", t);
if (!SESSION_CLASS_CAN_CHANGE_TYPE(s->class))
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Session class doesn't support changing type.");
if (!session_is_controller(s, sd_bus_message_get_sender(message)))
return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You must be in control of this session to set type");
session_set_type(s, type);
return sd_bus_reply_method_return(message, NULL);
}
static int method_set_class(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
Session *s = ASSERT_PTR(userdata);
SessionClass class;
const char *c;
uid_t uid;
int r;
assert(message);
r = sd_bus_message_read(message, "s", &c);
if (r < 0)
return r;
class = session_class_from_string(c);
if (class < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
"Invalid session class '%s'", c);
/* For now, we'll allow only upgrades user-incomplete → user */
if (class != SESSION_USER)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
"Class may only be set to 'user'");
if (s->class == SESSION_USER) /* No change, shortcut */
return sd_bus_reply_method_return(message, NULL);
if (s->class != SESSION_USER_INCOMPLETE)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
"Only sessions with class 'user-incomplete' may change class");
if (s->upgrade_message)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
"Set session class operation already in progress");
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_euid(creds, &uid);
if (r < 0)
return r;
if (uid != 0 && uid != s->user->user_record->uid)
return sd_bus_error_set(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may change its class");
session_set_class(s, class);
s->upgrade_message = sd_bus_message_ref(message);
r = session_send_upgrade_reply(s, /* error= */ NULL);
if (r < 0)
return r;
return 1;
}
static int method_set_display(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
const char *display;
int r;
assert(message);
r = sd_bus_message_read(message, "s", &display);
if (r < 0)
return r;
if (!session_is_controller(s, sd_bus_message_get_sender(message)))
return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You must be in control of this session to set display");
if (!SESSION_TYPE_IS_GRAPHICAL(s->type))
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Setting display is only supported for graphical sessions");
r = session_set_display(s, display);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_set_tty(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
int fd, r, flags;
_cleanup_free_ char *q = NULL;
assert(message);
r = sd_bus_message_read(message, "h", &fd);
if (r < 0)
return r;
if (!session_is_controller(s, sd_bus_message_get_sender(message)))
return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You must be in control of this session to set tty");
assert(fd >= 0);
flags = fcntl(fd, F_GETFL, 0);
if (flags < 0)
return -errno;
if ((flags & O_ACCMODE) != O_RDWR)
return -EACCES;
if (FLAGS_SET(flags, O_PATH))
return -ENOTTY;
r = getttyname_malloc(fd, &q);
if (r < 0)
return r;
r = session_set_tty(s, q);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_take_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
uint32_t major, minor;
_cleanup_(session_device_freep) SessionDevice *sd = NULL;
dev_t dev;
int r;
assert(message);
r = sd_bus_message_read(message, "uu", &major, &minor);
if (r < 0)
return r;
if (!DEVICE_MAJOR_VALID(major) || !DEVICE_MINOR_VALID(minor))
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Device major/minor is not valid.");
if (!SESSION_CLASS_CAN_TAKE_DEVICE(s->class))
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Session class doesn't support taking device control.");
if (!session_is_controller(s, sd_bus_message_get_sender(message)))
return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
dev = makedev(major, minor);
sd = hashmap_get(s->devices, &dev);
if (sd)
/* We don't allow retrieving a device multiple times.
* The related ReleaseDevice call is not ref-counted.
* The caller should use dup() if it requires more
* than one fd (it would be functionally
* equivalent). */
return sd_bus_error_set(error, BUS_ERROR_DEVICE_IS_TAKEN, "Device already taken");
r = session_device_new(s, dev, true, &sd);
if (r < 0)
return r;
r = session_device_save(sd);
if (r < 0)
return r;
r = sd_bus_reply_method_return(message, "hb", sd->fd, !sd->active);
if (r < 0)
return r;
session_save(s);
TAKE_PTR(sd);
return 1;
}
static int method_release_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
uint32_t major, minor;
SessionDevice *sd;
dev_t dev;
int r;
assert(message);
r = sd_bus_message_read(message, "uu", &major, &minor);
if (r < 0)
return r;
if (!DEVICE_MAJOR_VALID(major) || !DEVICE_MINOR_VALID(minor))
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Device major/minor is not valid.");
if (!session_is_controller(s, sd_bus_message_get_sender(message)))
return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
dev = makedev(major, minor);
sd = hashmap_get(s->devices, &dev);
if (!sd)
return sd_bus_error_set(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
session_device_free(sd);
session_save(s);
return sd_bus_reply_method_return(message, NULL);
}
static int method_pause_device_complete(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = ASSERT_PTR(userdata);
uint32_t major, minor;
SessionDevice *sd;
dev_t dev;
int r;
assert(message);
r = sd_bus_message_read(message, "uu", &major, &minor);
if (r < 0)
return r;
if (!DEVICE_MAJOR_VALID(major) || !DEVICE_MINOR_VALID(minor))
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Device major/minor is not valid.");
if (!session_is_controller(s, sd_bus_message_get_sender(message)))
return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
dev = makedev(major, minor);
sd = hashmap_get(s->devices, &dev);
if (!sd)
return sd_bus_error_set(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
session_device_complete_pause(sd);
return sd_bus_reply_method_return(message, NULL);
}
static int method_set_brightness(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
_cleanup_(sd_device_unrefp) sd_device *d = NULL;
const char *subsystem, *name, *seat;
Session *s = ASSERT_PTR(userdata);
uint32_t brightness;
uid_t uid;
int r;
assert(message);
r = sd_bus_message_read(message, "ssu", &subsystem, &name, &brightness);
if (r < 0)
return r;
if (!STR_IN_SET(subsystem, "backlight", "leds"))
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Subsystem type %s not supported, must be one of 'backlight' or 'leds'.", subsystem);
if (!filename_is_valid(name))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Not a valid device name %s, refusing.", name);
if (!s->seat)
return sd_bus_error_set(error, BUS_ERROR_NOT_YOUR_DEVICE, "Your session has no seat, refusing.");
if (s->seat->active != s)
return sd_bus_error_set(error, BUS_ERROR_NOT_YOUR_DEVICE, "Session is not in foreground, refusing.");
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_euid(creds, &uid);
if (r < 0)
return r;
if (uid != 0 && uid != s->user->user_record->uid)
return sd_bus_error_set(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may change brightness.");
r = sd_device_new_from_subsystem_sysname(&d, subsystem, name);
if (r < 0)
return sd_bus_error_set_errnof(error, r, "Failed to open device %s:%s: %m", subsystem, name);
if (sd_device_get_property_value(d, "ID_SEAT", &seat) >= 0 && !streq_ptr(seat, s->seat->id))
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);
r = manager_write_brightness(s->manager, d, brightness, message);
if (r < 0)
return r;
return 1;
}
static int session_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
_cleanup_free_ char *e = NULL;
sd_bus_message *message;
Manager *m = ASSERT_PTR(userdata);
Session *session;
const char *p;
int r;
assert(bus);
assert(path);
assert(interface);
assert(found);
p = startswith(path, "/org/freedesktop/login1/session/");
if (!p)
return 0;
e = bus_label_unescape(p);
if (!e)
return -ENOMEM;
message = sd_bus_get_current_message(bus);
r = manager_get_session_from_creds(m, message, e, error, &session);
if (r == -ENXIO) {
sd_bus_error_free(error);
return 0;
}
if (r < 0)
return r;
*found = session;
return 1;
}
char *session_bus_path(Session *s) {
_cleanup_free_ char *t = NULL;
assert(s);
t = bus_label_escape(s->id);
if (!t)
return NULL;
return strjoin("/org/freedesktop/login1/session/", t);
}
static int session_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;
Session *session;
int r;
assert(bus);
assert(path);
assert(nodes);
HASHMAP_FOREACH(session, m->sessions) {
char *p;
p = session_bus_path(session);
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_SESSION|SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
if (r >= 0) {
bool may_auto = false;
const char *name;
r = sd_bus_creds_get_session(creds, &name);
if (r >= 0) {
session = hashmap_get(m->sessions, name);
if (session) {
r = strv_extend(&l, "/org/freedesktop/login1/session/self");
if (r < 0)
return r;
may_auto = true;
}
}
if (!may_auto) {
uid_t uid;
r = sd_bus_creds_get_owner_uid(creds, &uid);
if (r >= 0) {
User *user;
user = hashmap_get(m->users, UID_TO_PTR(uid));
may_auto = user && user->display;
}
}
if (may_auto) {
r = strv_extend(&l, "/org/freedesktop/login1/session/auto");
if (r < 0)
return r;
}
}
}
*nodes = TAKE_PTR(l);
return 1;
}
int session_send_signal(Session *s, bool new_session) {
_cleanup_free_ char *p = NULL;
assert(s);
p = session_bus_path(s);
if (!p)
return -ENOMEM;
return sd_bus_emit_signal(
s->manager->bus,
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
new_session ? "SessionNew" : "SessionRemoved",
"so", s->id, p);
}
int session_send_changed(Session *s, const char *properties, ...) {
_cleanup_free_ char *p = NULL;
char **l;
assert(s);
if (!s->started)
return 0;
p = session_bus_path(s);
if (!p)
return -ENOMEM;
l = strv_from_stdarg_alloca(properties);
return sd_bus_emit_properties_changed_strv(s->manager->bus, p, "org.freedesktop.login1.Session", l);
}
int session_send_lock(Session *s, bool lock) {
_cleanup_free_ char *p = NULL;
assert(s);
if (!SESSION_CLASS_CAN_LOCK(s->class))
return -ENOTTY;
p = session_bus_path(s);
if (!p)
return -ENOMEM;
return sd_bus_emit_signal(
s->manager->bus,
p,
"org.freedesktop.login1.Session",
lock ? "Lock" : "Unlock",
NULL);
}
int session_send_lock_all(Manager *m, bool lock) {
Session *session;
int r = 0;
assert(m);
HASHMAP_FOREACH(session, m->sessions) {
int k;
if (!SESSION_CLASS_CAN_LOCK(session->class))
continue;
k = session_send_lock(session, lock);
if (k < 0)
r = k;
}
return r;
}
static bool session_job_pending(Session *s) {
assert(s);
assert(s->user);
/* Check if we have some jobs enqueued and not finished yet. Each time we get JobRemoved signal about
* relevant units, session_send_create_reply and hence us is called (see match_job_removed).
* Note that we don't care about job result here. */
return s->scope_job ||
s->user->runtime_dir_job ||
(SESSION_CLASS_WANTS_SERVICE_MANAGER(s->class) && s->user->service_manager_job);
}
int session_send_create_reply(Session *s, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *c = NULL;
_cleanup_close_ int fifo_fd = -EBADF;
_cleanup_free_ char *p = NULL;
assert(s);
/* This is called after the session scope and the user service were successfully created, and finishes where
* bus_manager_create_session() left off. */
if (!s->create_message)
return 0;
/* If error occurred, return it immediately. Otherwise let's wait for all jobs to finish before
* continuing. */
if (!sd_bus_error_is_set(error) && session_job_pending(s))
return 0;
c = TAKE_PTR(s->create_message);
if (error)
return sd_bus_reply_method_error(c, error);
fifo_fd = session_create_fifo(s);
if (fifo_fd < 0)
return fifo_fd;
/* Update the session state file before we notify the client about the result. */
session_save(s);
p = session_bus_path(s);
if (!p)
return -ENOMEM;
log_debug("Sending reply about created session: "
"id=%s object_path=%s uid=%u runtime_path=%s "
"session_fd=%d seat=%s vtnr=%u",
s->id,
p,
(uint32_t) s->user->user_record->uid,
s->user->runtime_path,
fifo_fd,
s->seat ? s->seat->id : "",
(uint32_t) s->vtnr);
return sd_bus_reply_method_return(
c, "soshusub",
s->id,
p,
s->user->runtime_path,
fifo_fd,
(uint32_t) s->user->user_record->uid,
s->seat ? s->seat->id : "",
(uint32_t) s->vtnr,
false);
}
int session_send_upgrade_reply(Session *s, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *c = NULL;
assert(s);
if (!s->upgrade_message)
return 0;
/* See comments in session_send_create_reply */
if (!sd_bus_error_is_set(error) && session_job_pending(s))
return 0;
c = TAKE_PTR(s->upgrade_message);
if (error)
return sd_bus_reply_method_error(c, error);
session_save(s);
return sd_bus_reply_method_return(c, NULL);
}
static const sd_bus_vtable session_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Session, id), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("User", "(uo)", property_get_user, 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(Session, timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("VTNr", "u", NULL, offsetof(Session, vtnr), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Seat", "(so)", property_get_seat, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TTY", "s", NULL, offsetof(Session, tty), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Display", "s", NULL, offsetof(Session, display), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Remote", "b", bus_property_get_bool, offsetof(Session, remote), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RemoteHost", "s", NULL, offsetof(Session, remote_host), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RemoteUser", "s", NULL, offsetof(Session, remote_user), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Session, service), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Desktop", "s", NULL, offsetof(Session, desktop), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Session, scope), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Leader", "u", bus_property_get_pid, offsetof(Session, leader.pid), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Audit", "u", NULL, offsetof(Session, audit_id), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Session, type), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Session, class), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Active", "b", property_get_active, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("State", "s", property_get_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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("LockedHint", "b", property_get_locked_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_METHOD("Terminate",
NULL,
NULL,
bus_session_method_terminate,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Activate",
NULL,
NULL,
bus_session_method_activate,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Lock",
NULL,
NULL,