#include <unistd.h>

#include <errno.h>

#include <string.h>

#include <getopt.h>

#include <pwd.h>

#include <locale.h>

#include "sd-bus.h"

#include "bus-util.h"

#include "bus-error.h"

#include "log.h"

#include "util.h"

#include "macro.h"

#include "pager.h"

#include "build.h"

#include "strv.h"

#include "unit-name.h"

#include "sysfs-show.h"

#include "cgroup-show.h"

#include "cgroup-util.h"

#include "spawn-polkit-agent.h"

static char **arg_property = NULL;

static bool arg_all = false;

static bool arg_full = false;

static bool arg_no_pager = false;

static const char *arg_kill_who = NULL;

static int arg_signal = SIGTERM;

static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;

static bool arg_ask_password = true;

static char *arg_host = NULL;

static void pager_open_if_enabled(void) {

if (arg_no_pager)

return;

pager_open(false);

}

static void polkit_agent_open_if_enabled(void) {

/* Open the polkit agent as a child process if necessary */

if (!arg_ask_password)

return;

if (arg_transport != BUS_TRANSPORT_LOCAL)

return;

polkit_agent_open();

}

static int list_sessions(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

const char *id, *user, *seat, *object;

unsigned k = 0;

uint32_t uid;

int r;

pager_open_if_enabled();

r = sd_bus_call_method(

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"ListSessions",

&error, &reply,

"");

if (r < 0) {

log_error("Failed to list sessions: %s", bus_error_message(&error, r));

return r;

}

r = sd_bus_message_enter_container(reply, 'a', "(susso)");

if (r < 0)

return bus_log_parse_error(r);

printf("%10s %10s %-16s %-16s\n", "SESSION", "UID", "USER", "SEAT");

while ((r = sd_bus_message_read(reply, "(susso)", &id, &uid, &user, &seat, &object)) > 0) {

printf("%10s %10u %-16s %-16s\n", id, (unsigned) uid, user, seat);

k++;

}

if (r < 0)

return bus_log_parse_error(r);

printf("\n%u sessions listed.\n", k);

return 0;

}

static int list_users(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

const char *user, *object;

unsigned k = 0;

uint32_t uid;

int r;

pager_open_if_enabled();

r = sd_bus_call_method(

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"ListUsers",

&error, &reply,

"");

if (r < 0) {

log_error("Failed to list users: %s", bus_error_message(&error, r));

return r;

}

r = sd_bus_message_enter_container(reply, 'a', "(uso)");

if (r < 0)

return bus_log_parse_error(r);

printf("%10s %-16s\n", "UID", "USER");

while ((r = sd_bus_message_read(reply, "(uso)", &uid, &user, &object)) > 0) {

printf("%10u %-16s\n", (unsigned) uid, user);

k++;

}

if (r < 0)

return bus_log_parse_error(r);

printf("\n%u users listed.\n", k);

return 0;

}

static int list_seats(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

const char *seat, *object;

unsigned k = 0;

int r;

pager_open_if_enabled();

r = sd_bus_call_method(

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"ListSeats",

&error, &reply,

"");

if (r < 0) {

log_error("Failed to list seats: %s", bus_error_message(&error, r));

return r;

}

r = sd_bus_message_enter_container(reply, 'a', "(so)");

if (r < 0)

return bus_log_parse_error(r);

printf("%-16s\n", "SEAT");

while ((r = sd_bus_message_read(reply, "(so)", &seat, &object)) > 0) {

printf("%-16s\n", seat);

k++;

}

if (r < 0)

return bus_log_parse_error(r);

printf("\n%u seats listed.\n", k);

return 0;

}

static int show_unit_cgroup(sd_bus *bus, const char *interface, const char *unit, pid_t leader) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

_cleanup_free_ char *path = NULL;

const char *cgroup;

int r, output_flags;

unsigned c;

assert(bus);

assert(unit);

if (arg_transport != BUS_TRANSPORT_LOCAL)

return 0;

path = unit_dbus_path_from_name(unit);

if (!path)

return -ENOMEM;

r = sd_bus_get_property(

bus,

"org.freedesktop.systemd1",

path,

interface,

"ControlGroup",

&error, &reply, "s");

if (r < 0)

return r;

r = sd_bus_message_read(reply, "s", &cgroup);

if (r < 0)

return r;

if (isempty(cgroup))

return 0;

if (cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, cgroup, false) != 0 && leader <= 0)

return 0;

output_flags =

arg_all * OUTPUT_SHOW_ALL |

arg_full * OUTPUT_FULL_WIDTH;

c = columns();

if (c > 18)

c -= 18;

else

c = 0;

show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, cgroup, "\t\t ", c, false, &leader, leader > 0, output_flags);

return 0;

}

typedef struct SessionStatusInfo {

const char *id;

uid_t uid;

const char *name;

usec_t timestamp;

unsigned int vtnr;

const char *seat;

const char *tty;

const char *display;

bool remote;

const char *remote_host;

const char *remote_user;

const char *service;

pid_t leader;

const char *type;

const char *class;

const char *state;

const char *scope;

} SessionStatusInfo;

typedef struct UserStatusInfo {

uid_t uid;

const char *name;

usec_t timestamp;

const char *state;

char **sessions;

const char *display;

const char *slice;

} UserStatusInfo;

typedef struct SeatStatusInfo {

const char *id;

const char *active_session;

char **sessions;

} SeatStatusInfo;

static int prop_map_first_of_struct(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {

const char *contents;

int r;

r = sd_bus_message_peek_type(m, NULL, &contents);

if (r < 0)

return r;

r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, contents);

if (r < 0)

return r;

if (contents[0] == 's' || contents[0] == 'o') {

const char *s;

char **p = (char **) userdata;

r = sd_bus_message_read_basic(m, contents[0], &s);

if (r < 0)

return r;

free(*p);

*p = strdup(s);

if (!*p)

return -ENOMEM;

} else {

r = sd_bus_message_read_basic(m, contents[0], userdata);

if (r < 0)

return r;

}

r = sd_bus_message_skip(m, contents+1);

if (r < 0)

return r;

r = sd_bus_message_exit_container(m);

if (r < 0)

return r;

return 0;

}

static int prop_map_sessions_strv(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {

const char *name;

int r;

assert(bus);

assert(m);

r = sd_bus_message_enter_container(m, 'a', "(so)");

if (r < 0)

return r;

while ((r = sd_bus_message_read(m, "(so)", &name, NULL)) > 0) {

r = strv_extend(userdata, name);

if (r < 0)

return r;

}

if (r < 0)

return r;

return sd_bus_message_exit_container(m);

}

static int print_session_status_info(sd_bus *bus, const char *path) {

static const struct bus_properties_map map[] = {

{ "Id", "s", NULL, offsetof(SessionStatusInfo, id) },

{ "Name", "s", NULL, offsetof(SessionStatusInfo, name) },

{ "TTY", "s", NULL, offsetof(SessionStatusInfo, tty) },

{ "Display", "s", NULL, offsetof(SessionStatusInfo, display) },

{ "RemoteHost", "s", NULL, offsetof(SessionStatusInfo, remote_host) },

{ "RemoteUser", "s", NULL, offsetof(SessionStatusInfo, remote_user) },

{ "Service", "s", NULL, offsetof(SessionStatusInfo, service) },

{ "Type", "s", NULL, offsetof(SessionStatusInfo, type) },

{ "Class", "s", NULL, offsetof(SessionStatusInfo, class) },

{ "Scope", "s", NULL, offsetof(SessionStatusInfo, scope) },

{ "State", "s", NULL, offsetof(SessionStatusInfo, state) },

{ "VTNr", "u", NULL, offsetof(SessionStatusInfo, vtnr) },

{ "Leader", "u", NULL, offsetof(SessionStatusInfo, leader) },

{ "Remote", "b", NULL, offsetof(SessionStatusInfo, remote) },

{ "Timestamp", "t", NULL, offsetof(SessionStatusInfo, timestamp) },

{ "User", "(uo)", prop_map_first_of_struct, offsetof(SessionStatusInfo, uid) },

{ "Seat", "(so)", prop_map_first_of_struct, offsetof(SessionStatusInfo, id) },

{}

};

char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;

char since2[FORMAT_TIMESTAMP_MAX], *s2;

SessionStatusInfo i = {};

int r;

r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);

if (r < 0)

return r;

printf("%s - ", strna(i.id));

if (i.name)

printf("%s (%u)\n", i.name, (unsigned) i.uid);

else

printf("%u\n", (unsigned) i.uid);

s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp);

s2 = format_timestamp(since2, sizeof(since2), i.timestamp);

if (s1)

printf("\t Since: %s; %s\n", s2, s1);

else if (s2)

printf("\t Since: %s\n", s2);

if (i.leader > 0) {

_cleanup_free_ char *t = NULL;

printf("\t Leader: %u", (unsigned) i.leader);

get_process_comm(i.leader, &t);

if (t)

printf(" (%s)", t);

printf("\n");

}

if (i.seat) {

printf("\t Seat: %s", i.seat);

if (i.vtnr > 0)

printf("; vc%i", i.vtnr);

printf("\n");

}

if (i.tty)

printf("\t TTY: %s\n", i.tty);

else if (i.display)

printf("\t Display: %s\n", i.display);

if (i.remote_host && i.remote_user)

printf("\t Remote: %s@%s\n", i.remote_user, i.remote_host);

else if (i.remote_host)

printf("\t Remote: %s\n", i.remote_host);

else if (i.remote_user)

printf("\t Remote: user %s\n", i.remote_user);

else if (i.remote)

printf("\t Remote: Yes\n");

if (i.service) {

printf("\t Service: %s", i.service);

if (i.type)

printf("; type %s", i.type);

if (i.class)

printf("; class %s", i.class);

printf("\n");

} else if (i.type) {

printf("\t Type: %s\n", i.type);

if (i.class)

printf("; class %s", i.class);

} else if (i.class)

printf("\t Class: %s\n", i.class);

if (i.state)

printf("\t State: %s\n", i.state);

if (i.scope) {

printf("\t Unit: %s\n", i.scope);

show_unit_cgroup(bus, "org.freedesktop.systemd1.Scope", i.scope, i.leader);

}

return 0;

}

static int print_user_status_info(sd_bus *bus, const char *path) {

static const struct bus_properties_map map[] = {

{ "Name", "s", NULL, offsetof(UserStatusInfo, name) },

{ "Slice", "s", NULL, offsetof(UserStatusInfo, slice) },

{ "State", "s", NULL, offsetof(UserStatusInfo, state) },

{ "UID", "u", NULL, offsetof(UserStatusInfo, uid) },

{ "Timestamp", "t", NULL, offsetof(UserStatusInfo, timestamp) },

{ "Display", "(so)", prop_map_first_of_struct, offsetof(UserStatusInfo, display) },

{ "Sessions", "a(so)", prop_map_sessions_strv, offsetof(UserStatusInfo, sessions) },

{}

};

char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;

char since2[FORMAT_TIMESTAMP_MAX], *s2;

UserStatusInfo i = {};

int r;

r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);

if (r < 0)

goto finish;

if (i.name)

printf("%s (%u)\n", i.name, (unsigned) i.uid);

else

printf("%u\n", (unsigned) i.uid);

s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp);

s2 = format_timestamp(since2, sizeof(since2), i.timestamp);

if (s1)

printf("\t Since: %s; %s\n", s2, s1);

else if (s2)

printf("\t Since: %s\n", s2);

if (!isempty(i.state))

printf("\t State: %s\n", i.state);

if (!strv_isempty(i.sessions)) {

char **l;

printf("\tSessions:");

STRV_FOREACH(l, i.sessions) {

if (streq_ptr(*l, i.display))

printf(" *%s", *l);

else

printf(" %s", *l);

}

printf("\n");

}

if (i.slice) {

printf("\t Unit: %s\n", i.slice);

show_unit_cgroup(bus, "org.freedesktop.systemd1.Slice", i.slice, 0);

}

finish:

strv_free(i.sessions);

return 0;

}

static int print_seat_status_info(sd_bus *bus, const char *path) {

static const struct bus_properties_map map[] = {

{ "Id", "s", NULL, offsetof(SeatStatusInfo, id) },

{ "ActiveSession", "(so)", prop_map_first_of_struct, offsetof(SeatStatusInfo, active_session) },

{ "Sessions", "a(so)", prop_map_sessions_strv, offsetof(SeatStatusInfo, sessions) },

{}

};

SeatStatusInfo i = {};

int r;

r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);

if (r < 0)

goto finish;

printf("%s\n", strna(i.id));

if (!strv_isempty(i.sessions)) {

char **l;

printf("\tSessions:");

STRV_FOREACH(l, i.sessions) {

if (streq_ptr(*l, i.active_session))

printf(" *%s", *l);

else

printf(" %s", *l);

}

printf("\n");

}

if (arg_transport == BUS_TRANSPORT_LOCAL) {

unsigned c;

c = columns();

if (c > 21)

c -= 21;

else

c = 0;

printf("\t Devices:\n");

show_sysfs(i.id, "\t\t ", c);

}

finish:

strv_free(i.sessions);

return 0;

}

static int show_session(sd_bus *bus, char **args, unsigned n) {

bool show_properties;

unsigned i;

int r;

assert(bus);

assert(args);

show_properties = !strstr(args[0], "status");

pager_open_if_enabled();

if (show_properties && n <= 1) {

/* If not argument is specified inspect the manager

r = bus_print_all_properties(bus, "org.freedesktop.login1", "/org/freedesktop/login1", NULL, arg_all);

if (r < 0)

log_error("Failed to query login manager.");

return r;

}

for (i = 1; i < n; i++) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message * reply = NULL;

const char *path = NULL;

if (i != 1)

printf("\n");

r = sd_bus_call_method(

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"GetSession",

&error, &reply,

"s", args[i]);

if (r < 0) {

log_error("Failed to get session: %s", bus_error_message(&error, r));

return r;

}

r = sd_bus_message_read(reply, "o", &path);

if (r < 0)

return bus_log_parse_error(r);

if (show_properties)

r = bus_print_all_properties(bus, "org.freedesktop.login1", path, NULL, arg_all);

else

r = print_session_status_info(bus, path);

if (r < 0) {

log_error("Failed to query session: %s", strerror(-r));

return r;

}

}

return 0;

}

static int show_user(sd_bus *bus, char **args, unsigned n) {

bool show_properties;

unsigned i;

int r;

assert(bus);

assert(args);

show_properties = !strstr(args[0], "status");

pager_open_if_enabled();

if (show_properties && n <= 1) {

/* If not argument is specified inspect the manager

r = bus_print_all_properties(bus, "org.freedesktop.login1", "/org/freedesktop/login1", NULL, arg_all);

if (r < 0)

log_error("Failed to query login manager.");

return r;

}

for (i = 1; i < n; i++) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message * reply = NULL;

const char *path = NULL;

uid_t uid;

if (i != 1)

printf("\n");

r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);

if (r < 0) {

log_error("Failed to look up user %s: %s", args[i], strerror(-r));

return r;

}

r = sd_bus_call_method(

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"GetUser",

&error, &reply,

"u", (uint32_t) uid);

if (r < 0) {

log_error("Failed to get user: %s", bus_error_message(&error, r));

return r;

}

r = sd_bus_message_read(reply, "o", &path);

if (r < 0)

return bus_log_parse_error(r);

if (show_properties)

r = bus_print_all_properties(bus, "org.freedesktop.login1", path, NULL, arg_all);

else

r = print_user_status_info(bus, path);

if (r < 0) {

log_error("Failed to query user: %s", strerror(-r));

return r;

}

}

return 0;

}

static int show_seat(sd_bus *bus, char **args, unsigned n) {

bool show_properties;

unsigned i;

int r;

assert(bus);

assert(args);

show_properties = !strstr(args[0], "status");

pager_open_if_enabled();

if (show_properties && n <= 1) {

/* If not argument is specified inspect the manager

r = bus_print_all_properties(bus, "org.freedesktop.login1", "/org/freedesktop/login1", NULL, arg_all);

if (r < 0)

log_error("Failed to query login manager.");

return r;

}

for (i = 1; i < n; i++) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message * reply = NULL;

const char *path = NULL;

if (i != 1)

printf("\n");

r = sd_bus_call_method(

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"GetSeat",

&error, &reply,

"s", args[i]);

if (r < 0) {

log_error("Failed to get seat: %s", bus_error_message(&error, r));

return r;

}

r = sd_bus_message_read(reply, "o", &path);

if (r < 0)

return bus_log_parse_error(r);

if (show_properties)

r = bus_print_all_properties(bus, "org.freedesktop.login1", path, NULL, arg_all);

else

r = print_seat_status_info(bus, path);

if (r < 0) {

log_error("Failed to query seat: %s", strerror(-r));

return r;

}

}

return 0;

}

static int activate(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

unsigned i;

int r;

assert(args);

for (i = 1; i < n; i++) {

r = sd_bus_call_method (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

streq(args[0], "lock-session") ? "LockSession" :

streq(args[0], "unlock-session") ? "UnlockSession" :

streq(args[0], "terminate-session") ? "TerminateSession" :

"ActivateSession",

&error, NULL,

"s", args[i]);

if (r < 0) {

log_error("Failed to issue method call: %s", bus_error_message(&error, -r));

return r;

}

}

return 0;

}

static int kill_session(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

unsigned i;

int r;

assert(args);

if (!arg_kill_who)

arg_kill_who = "all";

for (i = 1; i < n; i++) {

r = sd_bus_call_method (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"KillSession",

&error, NULL,

"ssi", args[i], arg_kill_who, arg_signal);

if (r < 0) {

log_error("Could not kill session: %s", bus_error_message(&error, -r));

return r;

}

}

return 0;

}

static int enable_linger(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

unsigned i;

bool b;

int r;

assert(args);

polkit_agent_open_if_enabled();

b = streq(args[0], "enable-linger");

for (i = 1; i < n; i++) {

uid_t uid;

r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);

if (r < 0) {

log_error("Failed to look up user %s: %s", args[i], strerror(-r));

return r;

}

r = sd_bus_call_method (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"SetUserLinger",

&error, NULL,

"ubb", (uint32_t) uid, b, true);

if (r < 0) {

log_error("Could not enable linger: %s", bus_error_message(&error, -r));

return r;

}

}

return 0;

}

static int terminate_user(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

unsigned i;

int r;

assert(args);

for (i = 1; i < n; i++) {

uid_t uid;

r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);

if (r < 0) {

log_error("Failed to look up user %s: %s", args[i], strerror(-r));

return r;

}

r = sd_bus_call_method (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"TerminateUser",

&error, NULL,

"u", (uint32_t) uid);

if (r < 0) {

log_error("Could not terminate user: %s", bus_error_message(&error, -r));

return r;

}

}

return 0;

}

static int kill_user(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

unsigned i;

int r;

assert(args);

if (!arg_kill_who)

arg_kill_who = "all";

for (i = 1; i < n; i++) {

uid_t uid;

r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);

if (r < 0) {

log_error("Failed to look up user %s: %s", args[i], strerror(-r));

return r;

}

r = sd_bus_call_method (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"KillUser",

&error, NULL,

"ui", (uint32_t) uid, arg_signal);

if (r < 0) {

log_error("Could not kill user: %s", bus_error_message(&error, -r));

return r;

}

}

return 0;

}

static int attach(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

unsigned i;

int r;

assert(args);

polkit_agent_open_if_enabled();

for (i = 2; i < n; i++) {

r = sd_bus_call_method (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"AttachDevice",

&error, NULL,

"ssb", args[1], args[i], true);

if (r < 0) {

log_error("Could not attach device: %s", bus_error_message(&error, -r));

return r;

}

}

return 0;

}

static int flush_devices(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

int r;

assert(args);

polkit_agent_open_if_enabled();

r = sd_bus_call_method (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"FlushDevices",

&error, NULL,

"b", true);

if (r < 0)

log_error("Could not flush devices: %s", bus_error_message(&error, -r));

return r;

}

static int lock_sessions(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

int r;

assert(args);

r = sd_bus_call_method (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

streq(args[0], "lock-sessions") ? "LockSessions" : "UnlockSessions",

&error, NULL,

NULL);

if (r < 0)

log_error("Could not lock sessions: %s", bus_error_message(&error, -r));

return r;

}

static int terminate_seat(sd_bus *bus, char **args, unsigned n) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

unsigned i;

int r;

assert(args);

for (i = 1; i < n; i++) {

r = sd_bus_call_method (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"TerminateSeat",

&error, NULL,

"s", args[i]);

if (r < 0) {

log_error("Could not terminate seat: %s", bus_error_message(&error, -r));

return r;

}

}

return 0;

}

static int help(void) {

printf("%s [OPTIONS...] {COMMAND} ...\n\n"

"Send control commands to or query the login manager.\n\n"

" -h --help Show this help\n"

" --version Show package version\n"

" --no-pager Do not pipe output into a pager\n"

" --no-ask-password Don't prompt for password\n"

" -H --host=[USER@]HOST Operate on remote host\n"

" -M --machine=CONTAINER Operate on local container\n"

" -p --property=NAME Show only properties by this name\n"

" -a --all Show all properties, including empty ones\n"

" -l --full Do not ellipsize output\n"

" --kill-who=WHO Who to send signal to\n"

" -s --signal=SIGNAL Which signal to send\n\n"

"Commands:\n"

" list-sessions List sessions\n"

" session-status ID... Show session status\n"

" show-session [ID...] Show properties of sessions or the manager\n"

" activate ID Activate a session\n"

" lock-session ID... Screen lock one or more sessions\n"

" unlock-session ID... Screen unlock one or more sessions\n"

" lock-sessions Screen lock all current sessions\n"

" unlock-sessions Screen unlock all current sessions\n"

" terminate-session ID... Terminate one or more sessions\n"

" kill-session ID... Send signal to processes of a session\n"

" list-users List users\n"

" user-status USER... Show user status\n"

" show-user [USER...] Show properties of users or the manager\n"

" enable-linger USER... Enable linger state of one or more users\n"

" disable-linger USER... Disable linger state of one or more users\n"

" terminate-user USER... Terminate all sessions of one or more users\n"

" kill-user USER... Send signal to processes of a user\n"

" list-seats List seats\n"

" seat-status NAME... Show seat status\n"

" show-seat NAME... Show properties of one or more seats\n"

" attach NAME DEVICE... Attach one or more devices to a seat\n"

" flush-devices Flush all device associations\n"

" terminate-seat NAME... Terminate all sessions on one or more seats\n",

program_invocation_short_name);

return 0;

}

static int parse_argv(int argc, char *argv[]) {

enum {

ARG_VERSION = 0x100,

ARG_NO_PAGER,

ARG_KILL_WHO,

ARG_NO_ASK_PASSWORD,

};

static const struct option options[] = {

{ "help", no_argument, NULL, 'h' },

{ "version", no_argument, NULL, ARG_VERSION },

{ "property", required_argument, NULL, 'p' },

{ "all", no_argument, NULL, 'a' },

{ "full", no_argument, NULL, 'l' },

{ "no-pager", no_argument, NULL, ARG_NO_PAGER },

{ "kill-who", required_argument, NULL, ARG_KILL_WHO },

{ "signal", required_argument, NULL, 's' },

{ "host", required_argument, NULL, 'H' },

{ "machine", required_argument, NULL, 'M' },

{ "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },

{}

};

int c, r;

assert(argc >= 0);

assert(argv);

while ((c = getopt_long(argc, argv, "hp:als:H:M:", options, NULL)) >= 0) {

switch (c) {

case 'h':

return help();

case ARG_VERSION:

puts(PACKAGE_STRING);

puts(SYSTEMD_FEATURES);

return 0;

case 'p': {

r = strv_extend(&arg_property, optarg);

if (r < 0)

return log_oom();

/* If the user asked for a particular

arg_all = true;

break;

}

case 'a':

arg_all = true;

break;

case 'l':

arg_full = true;

break;

case ARG_NO_PAGER:

arg_no_pager = true;

break;

case ARG_NO_ASK_PASSWORD:

arg_ask_password = false;

break;

case ARG_KILL_WHO:

arg_kill_who = optarg;

break;

case 's':

arg_signal = signal_from_string_try_harder(optarg);

if (arg_signal < 0) {

log_error("Failed to parse signal string %s.", optarg);

return -EINVAL;

}

break;

case 'H':

arg_transport = BUS_TRANSPORT_REMOTE;

arg_host = optarg;

break;

case 'M':

arg_transport = BUS_TRANSPORT_CONTAINER;

arg_host = optarg;

break;

case '?':

return -EINVAL;

default:

assert_not_reached("Unhandled option");

}

}

return 1;

}

static int loginctl_main(sd_bus *bus, int argc, char *argv[]) {

static const struct {

const char* verb;

const enum {

MORE,

LESS,

EQUAL

} argc_cmp;

const int argc;

int (* const dispatch)(sd_bus *bus, char **args, unsigned n);

} verbs[] = {

{ "list-sessions", LESS, 1, list_sessions },

{ "session-status", MORE, 2, show_session },

{ "show-session", MORE, 1, show_session },

{ "activate", EQUAL, 2, activate },

{ "lock-session", MORE, 2, activate },

{ "unlock-session", MORE, 2, activate },

{ "lock-sessions", EQUAL, 1, lock_sessions },

{ "unlock-sessions", EQUAL, 1, lock_sessions },

{ "terminate-session", MORE, 2, activate },

{ "kill-session", MORE, 2, kill_session },

{ "list-users", EQUAL, 1, list_users },

{ "user-status", MORE, 2, show_user },

{ "show-user", MORE, 1, show_user },

{ "enable-linger", MORE, 2, enable_linger },

{ "disable-linger", MORE, 2, enable_linger },

{ "terminate-user", MORE, 2, terminate_user },

{ "kill-user", MORE, 2, kill_user },

{ "list-seats", EQUAL, 1, list_seats },

{ "seat-status", MORE, 2, show_seat },

{ "show-seat", MORE, 1, show_seat },

{ "attach", MORE, 3, attach },

{ "flush-devices", EQUAL, 1, flush_devices },

{ "terminate-seat", MORE, 2, terminate_seat },

};

int left;

unsigned i;

assert(argc >= 0);

assert(argv);

left = argc - optind;

if (left <= 0)

/* Special rule: no arguments means "list-sessions" */

i = 0;

else {

if (streq(argv[optind], "help")) {

help();

return 0;

}

for (i = 0; i < ELEMENTSOF(verbs); i++)

if (streq(argv[optind], verbs[i].verb))

break;

if (i >= ELEMENTSOF(verbs)) {

log_error("Unknown operation %s", argv[optind]);

return -EINVAL;

}

}

switch (verbs[i].argc_cmp) {

case EQUAL:

if (left != verbs[i].argc) {

log_error("Invalid number of arguments.");

return -EINVAL;

}

break;

case MORE:

if (left < verbs[i].argc) {

log_error("Too few arguments.");

return -EINVAL;

}

break;

case LESS:

if (left > verbs[i].argc) {

log_error("Too many arguments.");

return -EINVAL;

}

break;

default:

assert_not_reached("Unknown comparison operator.");

}

return verbs[i].dispatch(bus, argv + optind, left);

}

int main(int argc, char *argv[]) {

_cleanup_bus_unref_ sd_bus *bus = NULL;

int r;

setlocale(LC_ALL, "");

log_parse_environment();

log_open();

r = parse_argv(argc, argv);

if (r <= 0)

goto finish;

r = bus_open_transport(arg_transport, arg_host, false, &bus);

if (r < 0) {

log_error("Failed to create bus connection: %s", strerror(-r));

goto finish;

}

r = loginctl_main(bus, argc, argv);

finish:

pager_close();

strv_free(arg_property);

return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;

}