#include <dbus/dbus.h>

#include <unistd.h>

#include <errno.h>

#include <string.h>

#include <getopt.h>

#include <pwd.h>

#include "log.h"

#include "util.h"

#include "macro.h"

#include "pager.h"

#include "dbus-common.h"

#include "build.h"

#include "strv.h"

#include "cgroup-show.h"

#include "sysfs-show.h"

#include "spawn-polkit-agent.h"

static char **arg_property = NULL;

static bool arg_all = false;

static bool arg_no_pager = false;

static const char *arg_kill_who = NULL;

static int arg_signal = SIGTERM;

static enum transport {

TRANSPORT_NORMAL,

TRANSPORT_SSH,

TRANSPORT_POLKIT

} arg_transport = TRANSPORT_NORMAL;

static bool arg_ask_password = true;

static const char *arg_host = NULL;

static bool on_tty(void) {

static int t = -1;

/* Note that this is invoked relatively early, before we start

if (_unlikely_(t < 0))

t = isatty(STDOUT_FILENO) > 0;

return t;

}

static void pager_open_if_enabled(void) {

/* Cache result before we open the pager */

on_tty();

if (arg_no_pager)

return;

pager_open();

}

static void polkit_agent_open_if_enabled(void) {

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

if (!arg_ask_password)

return;

polkit_agent_open();

}

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

DBusMessage *reply = NULL;

int r;

DBusMessageIter iter, sub, sub2;

unsigned k = 0;

pager_open_if_enabled();

r = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"ListSessions",

&reply,

NULL,

DBUS_TYPE_INVALID);

if (r)

goto finish;

if (!dbus_message_iter_init(reply, &iter) ||

dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||

dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

dbus_message_iter_recurse(&iter, &sub);

if (on_tty())

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

while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {

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

uint32_t uid;

if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

dbus_message_iter_recurse(&sub, &sub2);

if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &uid, true) < 0 ||

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &user, true) < 0 ||

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &seat, true) < 0 ||

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &object, false) < 0) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

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

k++;

dbus_message_iter_next(&sub);

}

if (on_tty())

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

r = 0;

finish:

if (reply)

dbus_message_unref(reply);

return r;

}

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

DBusMessage *reply = NULL;

int r;

DBusMessageIter iter, sub, sub2;

unsigned k = 0;

pager_open_if_enabled();

r = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"ListUsers",

&reply,

NULL,

DBUS_TYPE_INVALID);

if (r)

goto finish;

if (!dbus_message_iter_init(reply, &iter) ||

dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||

dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

dbus_message_iter_recurse(&iter, &sub);

if (on_tty())

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

while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {

const char *user, *object;

uint32_t uid;

if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

dbus_message_iter_recurse(&sub, &sub2);

if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &uid, true) < 0 ||

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &user, true) < 0 ||

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &object, false) < 0) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

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

k++;

dbus_message_iter_next(&sub);

}

if (on_tty())

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

r = 0;

finish:

if (reply)

dbus_message_unref(reply);

return r;

}

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

DBusMessage *reply = NULL;

int r;

DBusMessageIter iter, sub, sub2;

unsigned k = 0;

pager_open_if_enabled();

r = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"ListSeats",

&reply,

NULL,

DBUS_TYPE_INVALID);

if (r)

goto finish;

if (!dbus_message_iter_init(reply, &iter) ||

dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||

dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

dbus_message_iter_recurse(&iter, &sub);

if (on_tty())

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

while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {

const char *seat, *object;

if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

dbus_message_iter_recurse(&sub, &sub2);

if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &seat, true) < 0 ||

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &object, false) < 0) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

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

k++;

dbus_message_iter_next(&sub);

}

if (on_tty())

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

r = 0;

finish:

if (reply)

dbus_message_unref(reply);

return r;

}

typedef struct SessionStatusInfo {

const char *id;

uid_t uid;

const char *name;

usec_t timestamp;

const char *default_control_group;

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;

} SessionStatusInfo;

typedef struct UserStatusInfo {

uid_t uid;

const char *name;

usec_t timestamp;

const char *default_control_group;

const char *state;

char **sessions;

const char *display;

} UserStatusInfo;

typedef struct SeatStatusInfo {

const char *id;

const char *active_session;

char **sessions;

} SeatStatusInfo;

static void print_session_status_info(SessionStatusInfo *i) {

char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;

char since2[FORMAT_TIMESTAMP_MAX], *s2;

assert(i);

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_pretty(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) {

char *t = NULL;

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

get_process_comm(i->leader, &t);

if (t) {

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

free(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->default_control_group) {

unsigned c;

printf("\t CGroup: %s\n", i->default_control_group);

if (arg_transport != TRANSPORT_SSH) {

c = columns();

if (c > 18)

c -= 18;

else

c = 0;

show_cgroup_and_extra_by_spec(i->default_control_group, "\t\t ", c, false, arg_all, &i->leader, i->leader > 0 ? 1 : 0);

}

}

}

static void print_user_status_info(UserStatusInfo *i) {

char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;

char since2[FORMAT_TIMESTAMP_MAX], *s2;

assert(i);

if (i->name)

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

else

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

s1 = format_timestamp_pretty(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->default_control_group) {

unsigned c;

printf("\t CGroup: %s\n", i->default_control_group);

if (arg_transport != TRANSPORT_SSH) {

c = columns();

if (c > 18)

c -= 18;

else

c = 0;

show_cgroup_by_path(i->default_control_group, "\t\t ", c, false, arg_all);

}

}

}

static void print_seat_status_info(SeatStatusInfo *i) {

assert(i);

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 != TRANSPORT_SSH) {

unsigned c;

c = columns();

if (c > 21)

c -= 21;

else

c = 0;

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

show_sysfs(i->id, "\t\t ", c);

}

}

static int status_property_session(const char *name, DBusMessageIter *iter, SessionStatusInfo *i) {

assert(name);

assert(iter);

assert(i);

switch (dbus_message_iter_get_arg_type(iter)) {

case DBUS_TYPE_STRING: {

const char *s;

dbus_message_iter_get_basic(iter, &s);

if (!isempty(s)) {

if (streq(name, "Id"))

i->id = s;

else if (streq(name, "Name"))

i->name = s;

else if (streq(name, "DefaultControlGroup"))

i->default_control_group = s;

else if (streq(name, "TTY"))

i->tty = s;

else if (streq(name, "Display"))

i->display = s;

else if (streq(name, "RemoteHost"))

i->remote_host = s;

else if (streq(name, "RemoteUser"))

i->remote_user = s;

else if (streq(name, "Service"))

i->service = s;

else if (streq(name, "Type"))

i->type = s;

else if (streq(name, "Class"))

i->class = s;

else if (streq(name, "State"))

i->state = s;

}

break;

}

case DBUS_TYPE_UINT32: {

uint32_t u;

dbus_message_iter_get_basic(iter, &u);

if (streq(name, "VTNr"))

i->vtnr = (int) u;

else if (streq(name, "Leader"))

i->leader = (pid_t) u;

break;

}

case DBUS_TYPE_BOOLEAN: {

dbus_bool_t b;

dbus_message_iter_get_basic(iter, &b);

if (streq(name, "Remote"))

i->remote = b;

break;

}

case DBUS_TYPE_UINT64: {

uint64_t u;

dbus_message_iter_get_basic(iter, &u);

if (streq(name, "Timestamp"))

i->timestamp = (usec_t) u;

break;

}

case DBUS_TYPE_STRUCT: {

DBusMessageIter sub;

dbus_message_iter_recurse(iter, &sub);

if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "User")) {

uint32_t u;

dbus_message_iter_get_basic(&sub, &u);

i->uid = (uid_t) u;

} else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Seat")) {

const char *s;

dbus_message_iter_get_basic(&sub, &s);

if (!isempty(s))

i->seat = s;

}

break;

}

}

return 0;

}

static int status_property_user(const char *name, DBusMessageIter *iter, UserStatusInfo *i) {

assert(name);

assert(iter);

assert(i);

switch (dbus_message_iter_get_arg_type(iter)) {

case DBUS_TYPE_STRING: {

const char *s;

dbus_message_iter_get_basic(iter, &s);

if (!isempty(s)) {

if (streq(name, "Name"))

i->name = s;

else if (streq(name, "DefaultControlGroup"))

i->default_control_group = s;

else if (streq(name, "State"))

i->state = s;

}

break;

}

case DBUS_TYPE_UINT32: {

uint32_t u;

dbus_message_iter_get_basic(iter, &u);

if (streq(name, "UID"))

i->uid = (uid_t) u;

break;

}

case DBUS_TYPE_UINT64: {

uint64_t u;

dbus_message_iter_get_basic(iter, &u);

if (streq(name, "Timestamp"))

i->timestamp = (usec_t) u;

break;

}

case DBUS_TYPE_STRUCT: {

DBusMessageIter sub;

dbus_message_iter_recurse(iter, &sub);

if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Display")) {

const char *s;

dbus_message_iter_get_basic(&sub, &s);

if (!isempty(s))

i->display = s;

}

break;

}

case DBUS_TYPE_ARRAY: {

if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Sessions")) {

DBusMessageIter sub, sub2;

dbus_message_iter_recurse(iter, &sub);

while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {

const char *id;

const char *path;

dbus_message_iter_recurse(&sub, &sub2);

if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) >= 0 &&

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &path, false) >= 0) {

char **l;

l = strv_append(i->sessions, id);

if (!l)

return -ENOMEM;

strv_free(i->sessions);

i->sessions = l;

}

dbus_message_iter_next(&sub);

}

return 0;

}

}

}

return 0;

}

static int status_property_seat(const char *name, DBusMessageIter *iter, SeatStatusInfo *i) {

assert(name);

assert(iter);

assert(i);

switch (dbus_message_iter_get_arg_type(iter)) {

case DBUS_TYPE_STRING: {

const char *s;

dbus_message_iter_get_basic(iter, &s);

if (!isempty(s)) {

if (streq(name, "Id"))

i->id = s;

}

break;

}

case DBUS_TYPE_STRUCT: {

DBusMessageIter sub;

dbus_message_iter_recurse(iter, &sub);

if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "ActiveSession")) {

const char *s;

dbus_message_iter_get_basic(&sub, &s);

if (!isempty(s))

i->active_session = s;

}

break;

}

case DBUS_TYPE_ARRAY: {

if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Sessions")) {

DBusMessageIter sub, sub2;

dbus_message_iter_recurse(iter, &sub);

while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {

const char *id;

const char *path;

dbus_message_iter_recurse(&sub, &sub2);

if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) >= 0 &&

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &path, false) >= 0) {

char **l;

l = strv_append(i->sessions, id);

if (!l)

return -ENOMEM;

strv_free(i->sessions);

i->sessions = l;

}

dbus_message_iter_next(&sub);

}

return 0;

}

}

}

return 0;

}

static int print_property(const char *name, DBusMessageIter *iter) {

assert(name);

assert(iter);

if (arg_property && !strv_find(arg_property, name))

return 0;

switch (dbus_message_iter_get_arg_type(iter)) {

case DBUS_TYPE_STRUCT: {

DBusMessageIter sub;

dbus_message_iter_recurse(iter, &sub);

if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING &&

(streq(name, "Display") || streq(name, "ActiveSession"))) {

const char *s;

dbus_message_iter_get_basic(&sub, &s);

if (arg_all || !isempty(s))

printf("%s=%s\n", name, s);

return 0;

}

break;

}

case DBUS_TYPE_ARRAY:

if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Sessions")) {

DBusMessageIter sub, sub2;

bool found = false;

dbus_message_iter_recurse(iter, &sub);

while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {

const char *id;

const char *path;

dbus_message_iter_recurse(&sub, &sub2);

if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) >= 0 &&

bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &path, false) >= 0) {

if (found)

printf(" %s", id);

else {

printf("%s=%s", name, id);

found = true;

}

}

dbus_message_iter_next(&sub);

}

if (!found && arg_all)

printf("%s=\n", name);

else if (found)

printf("\n");

return 0;

}

break;

}

if (generic_print_property(name, iter, arg_all) > 0)

return 0;

if (arg_all)

printf("%s=[unprintable]\n", name);

return 0;

}

static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {

_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;

const char *interface = "";

int r;

DBusMessageIter iter, sub, sub2, sub3;

SessionStatusInfo session_info;

UserStatusInfo user_info;

SeatStatusInfo seat_info;

assert(path);

assert(new_line);

zero(session_info);

zero(user_info);

zero(seat_info);

r = bus_method_call_with_reply(

bus,

"org.freedesktop.login1",

path,

"org.freedesktop.DBus.Properties",

"GetAll",

&reply,

NULL,

DBUS_TYPE_STRING, &interface,

DBUS_TYPE_INVALID);

if (r < 0)

goto finish;

if (!dbus_message_iter_init(reply, &iter) ||

dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||

dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

dbus_message_iter_recurse(&iter, &sub);

if (*new_line)

printf("\n");

*new_line = true;

while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {

const char *name;

if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

dbus_message_iter_recurse(&sub, &sub2);

if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {

log_error("Failed to parse reply.");

r = -EIO;

goto finish;

}

dbus_message_iter_recurse(&sub2, &sub3);

if (show_properties)

r = print_property(name, &sub3);

else if (strstr(verb, "session"))

r = status_property_session(name, &sub3, &session_info);

else if (strstr(verb, "user"))

r = status_property_user(name, &sub3, &user_info);

else

r = status_property_seat(name, &sub3, &seat_info);

if (r < 0) {

log_error("Failed to parse reply.");

goto finish;

}

dbus_message_iter_next(&sub);

}

if (!show_properties) {

if (strstr(verb, "session"))

print_session_status_info(&session_info);

else if (strstr(verb, "user"))

print_user_status_info(&user_info);

else

print_seat_status_info(&seat_info);

}

r = 0;

finish:

strv_free(seat_info.sessions);

strv_free(user_info.sessions);

return r;

}

static int show(DBusConnection *bus, char **args, unsigned n) {

DBusMessage *reply = NULL;

int r, ret = 0;

DBusError error;

unsigned i;

bool show_properties, new_line = false;

assert(bus);

assert(args);

dbus_error_init(&error);

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

if (show_properties)

pager_open_if_enabled();

if (show_properties && n <= 1) {

/* If not argument is specified inspect the manager

ret = show_one(args[0], bus, "/org/freedesktop/login1", show_properties, &new_line);

goto finish;

}

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

const char *path = NULL;

if (strstr(args[0], "session")) {

ret = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"GetSession",

&reply,

NULL,

DBUS_TYPE_STRING, &args[i],

DBUS_TYPE_INVALID);

} else if (strstr(args[0], "user")) {

uid_t uid;

uint32_t u;

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

if (ret < 0) {

log_error("User %s unknown.", args[i]);

goto finish;

}

u = (uint32_t) uid;

ret = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"GetUser",

&reply,

NULL,

DBUS_TYPE_UINT32, &u,

DBUS_TYPE_INVALID);

} else {

ret = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"GetSeat",

&reply,

NULL,

DBUS_TYPE_STRING, &args[i],

DBUS_TYPE_INVALID);

}

if (ret)

goto finish;

if (!dbus_message_get_args(reply, &error,

DBUS_TYPE_OBJECT_PATH, &path,

DBUS_TYPE_INVALID)) {

log_error("Failed to parse reply: %s", bus_error_message(&error));

ret = -EIO;

goto finish;

}

r = show_one(args[0], bus, path, show_properties, &new_line);

if (r != 0)

ret = r;

dbus_message_unref(reply);

reply = NULL;

}

finish:

if (reply)

dbus_message_unref(reply);

dbus_error_free(&error);

return ret;

}

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

int ret = 0;

unsigned i;

assert(args);

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

ret = bus_method_call_with_reply (

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",

NULL,

NULL,

DBUS_TYPE_STRING, &args[i],

DBUS_TYPE_INVALID);

if (ret)

goto finish;

}

finish:

return ret;

}

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

int ret = 0;

unsigned i;

assert(args);

if (!arg_kill_who)

arg_kill_who = "all";

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

ret = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"KillSession",

NULL,

NULL,

DBUS_TYPE_STRING, &args[i],

DBUS_TYPE_STRING, &arg_kill_who,

DBUS_TYPE_INT32, &arg_signal,

DBUS_TYPE_INVALID);

if (ret)

goto finish;

}

finish:

return ret;

}

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

int ret = 0;

unsigned i;

dbus_bool_t b, interactive = true;

assert(args);

polkit_agent_open_if_enabled();

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

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

uint32_t u;

uid_t uid;

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

if (ret < 0) {

log_error("Failed to resolve user %s: %s", args[i], strerror(-ret));

goto finish;

}

u = (uint32_t) uid;

ret = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"SetUserLinger",

NULL,

NULL,

DBUS_TYPE_UINT32, &u,

DBUS_TYPE_BOOLEAN, &b,

DBUS_TYPE_BOOLEAN, &interactive,

DBUS_TYPE_INVALID);

if (ret)

goto finish;

}

finish:

return ret;

}

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

int ret = 0;

unsigned i;

assert(args);

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

uint32_t u;

uid_t uid;

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

if (ret < 0) {

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

goto finish;

}

u = (uint32_t) uid;

ret = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"TerminateUser",

NULL,

NULL,

DBUS_TYPE_UINT32, &u,

DBUS_TYPE_INVALID);

if (ret)

goto finish;

}

finish:

return ret;

}

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

int ret = 0;

unsigned i;

assert(args);

if (!arg_kill_who)

arg_kill_who = "all";

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

uid_t uid;

uint32_t u;

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

if (ret < 0) {

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

goto finish;

}

u = (uint32_t) uid;

ret = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"KillUser",

NULL,

NULL,

DBUS_TYPE_UINT32, &u,

DBUS_TYPE_INT32, &arg_signal,

DBUS_TYPE_INVALID);

if (ret)

goto finish;

}

finish:

return ret;

}

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

int ret = 0;

unsigned i;

dbus_bool_t interactive = true;

assert(args);

polkit_agent_open_if_enabled();

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

ret = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"AttachDevice",

NULL,

NULL,

DBUS_TYPE_STRING, &args[1],

DBUS_TYPE_STRING, &args[i],

DBUS_TYPE_BOOLEAN, &interactive,

DBUS_TYPE_INVALID);

if (ret)

goto finish;

}

finish:

return ret;

}

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

dbus_bool_t interactive = true;

assert(args);

polkit_agent_open_if_enabled();

return bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"FlushDevices",

NULL,

NULL,

DBUS_TYPE_BOOLEAN, &interactive,

DBUS_TYPE_INVALID);

}

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

polkit_agent_open_if_enabled();

return bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"LockSessions",

NULL,

NULL,

DBUS_TYPE_INVALID);

}

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

int ret = 0;

unsigned i;

assert(args);

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

ret = bus_method_call_with_reply (

bus,

"org.freedesktop.login1",

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

"TerminateSeat",

NULL,

NULL,

DBUS_TYPE_STRING, &args[i],

DBUS_TYPE_INVALID);

if (ret)

goto finish;

}

finish:

return ret;

}

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"

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

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

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

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

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

" -H --host=[USER@]HOST Show information for remote host\n"

" -P --privileged Acquire privileges before execution\n"

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

"Commands:\n"

" list-sessions List sessions\n"

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

" show-session [ID...] Show properties of one or more sessions\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"

" 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 one or more users\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' },

{ "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' },

{ "privileged", no_argument, NULL, 'P' },

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

{ NULL, 0, NULL, 0 }

};

int c;

assert(argc >= 0);

assert(argv);

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

switch (c) {

case 'h':

help();

return 0;

case ARG_VERSION:

puts(PACKAGE_STRING);

puts(DISTRIBUTION);

puts(SYSTEMD_FEATURES);

return 0;

case 'p': {

char **l;

l = strv_append(arg_property, optarg);

if (!l)

return -ENOMEM;

strv_free(arg_property);

arg_property = l;

/* If the user asked for a particular

arg_all = true;

break;

}

case 'a':

arg_all = 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 'P':

arg_transport = TRANSPORT_POLKIT;

break;

case 'H':

arg_transport = TRANSPORT_SSH;

arg_host = optarg;

break;

case '?':

return -EINVAL;

default:

log_error("Unknown option code %c", c);

return -EINVAL;

}

}

return 1;

}

static int loginctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {

static const struct {

const char* verb;

const enum {

MORE,

LESS,

EQUAL

} argc_cmp;

const int argc;

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

} verbs[] = {

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

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

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

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

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

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

{ "lock-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 },

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

{ "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 },

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

{ "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);

assert(error);

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.");

}

if (!bus) {

log_error("Failed to get D-Bus connection: %s", error->message);

return -EIO;

}

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

}

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

int r, retval = EXIT_FAILURE;

DBusConnection *bus = NULL;

DBusError error;

dbus_error_init(&error);

log_parse_environment();

log_open();

r = parse_argv(argc, argv);

if (r < 0)

goto finish;

else if (r == 0) {

retval = EXIT_SUCCESS;

goto finish;

}

if (arg_transport == TRANSPORT_NORMAL)

bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);

else if (arg_transport == TRANSPORT_POLKIT)

bus_connect_system_polkit(&bus, &error);

else if (arg_transport == TRANSPORT_SSH)

bus_connect_system_ssh(NULL, arg_host, &bus, &error);

else

assert_not_reached("Uh, invalid transport...");

r = loginctl_main(bus, argc, argv, &error);

retval = r < 0 ? EXIT_FAILURE : r;

finish:

if (bus) {

dbus_connection_flush(bus);

dbus_connection_close(bus);

dbus_connection_unref(bus);

}

dbus_error_free(&error);

dbus_shutdown();

strv_free(arg_property);

pager_close();

return retval;

}