/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with systemd; If not, see .
***/
#include
#include
#include
#include
#include
#include
#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"
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 const char *arg_host = NULL;
static bool on_tty(void) {
static int t = -1;
/* Note that this is invoked relatively early, before we start
* the pager. That means the value we return reflects whether
* we originally were started on a tty, not if we currently
* are. But this is intended, since we want colour and so on
* when run in our own pager. */
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)
pager_open();
}
static int list_sessions(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
DBusMessageIter iter, sub, sub2;
unsigned k = 0;
dbus_error_init(&error);
assert(bus);
pager_open_if_enabled();
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"ListSessions");
if (!m) {
log_error("Could not allocate message.");
return -ENOMEM;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
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 (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int list_users(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
DBusMessageIter iter, sub, sub2;
unsigned k = 0;
dbus_error_init(&error);
assert(bus);
pager_open_if_enabled();
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"ListUsers");
if (!m) {
log_error("Could not allocate message.");
return -ENOMEM;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
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 (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int list_seats(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
DBusMessageIter iter, sub, sub2;
unsigned k = 0;
dbus_error_init(&error);
assert(bus);
pager_open_if_enabled();
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"ListSeats");
if (!m) {
log_error("Could not allocate message.");
return -ENOMEM;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
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 (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
typedef struct SessionStatusInfo {
const char *id;
uid_t uid;
const char *name;
usec_t timestamp;
const char *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;
bool active;
} SessionStatusInfo;
typedef struct UserStatusInfo {
uid_t uid;
const char *name;
usec_t timestamp;
const char *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);
printf("\n");
} else if (i->type)
printf("\t Type: %s\n", i->type);
printf("\t Active: %s\n", yes_no(i->active));
if (i->control_group) {
unsigned c;
printf("\t CGroup: %s\n", i->control_group);
if (arg_transport != TRANSPORT_SSH) {
c = columns();
if (c > 18)
c -= 18;
else
c = 0;
show_cgroup_by_path(i->control_group, "\t\t ", c);
}
}
}
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->control_group) {
unsigned c;
printf("\t CGroup: %s\n", i->control_group);
if (arg_transport != TRANSPORT_SSH) {
c = columns();
if (c > 18)
c -= 18;
else
c = 0;
show_cgroup_by_path(i->control_group, "\t\t ", c);
}
}
}
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, "ControlGroupPath"))
i->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;
}
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;
else if (streq(name, "Active"))
i->active = 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, "ControlGroupPath"))
i->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) {
DBusMessage *m = NULL, *reply = NULL;
const char *interface = "";
int r;
DBusError error;
DBusMessageIter iter, sub, sub2, sub3;
SessionStatusInfo session_info;
UserStatusInfo user_info;
SeatStatusInfo seat_info;
assert(bus);
assert(path);
assert(new_line);
zero(session_info);
zero(user_info);
zero(seat_info);
dbus_error_init(&error);
m = dbus_message_new_method_call(
"org.freedesktop.login1",
path,
"org.freedesktop.DBus.Properties",
"GetAll");
if (!m) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &interface,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
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.");
r = -EIO;
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);
}
strv_free(seat_info.sessions);
strv_free(user_info.sessions);
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int show(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL, *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
* itself */
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")) {
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"GetSession");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
} else if (strstr(args[0], "user")) {
uid_t uid;
uint32_t u;
ret = get_user_creds((const char**) (args+i), &uid, NULL, NULL);
if (ret < 0) {
log_error("User %s unknown.", args[i]);
goto finish;
}
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"GetUser");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
u = (uint32_t) uid;
if (!dbus_message_append_args(m,
DBUS_TYPE_UINT32, &u,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
} else {
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"GetSeat");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
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(m);
dbus_message_unref(reply);
m = reply = NULL;
}
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return ret;
}
static int activate(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL;
int ret = 0;
DBusError error;
unsigned i;
assert(bus);
assert(args);
dbus_error_init(&error);
for (i = 1; i < n; i++) {
DBusMessage *reply;
m = dbus_message_new_method_call(
"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");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
finish:
if (m)
dbus_message_unref(m);
dbus_error_free(&error);
return ret;
}
static int kill_session(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL;
int ret = 0;
DBusError error;
unsigned i;
assert(bus);
assert(args);
dbus_error_init(&error);
if (!arg_kill_who)
arg_kill_who = "all";
for (i = 1; i < n; i++) {
DBusMessage *reply;
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"KillSession");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_STRING, &arg_kill_who,
DBUS_TYPE_INT32, arg_signal,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
finish:
if (m)
dbus_message_unref(m);
dbus_error_free(&error);
return ret;
}
static int enable_linger(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL;
int ret = 0;
DBusError error;
unsigned i;
dbus_bool_t b, interactive = true;
assert(bus);
assert(args);
dbus_error_init(&error);
b = streq(args[0], "enable-linger");
for (i = 1; i < n; i++) {
DBusMessage *reply;
uint32_t u;
uid_t uid;
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"SetUserLinger");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
ret = get_user_creds((const char**) (args+i), &uid, NULL, NULL);
if (ret < 0) {
log_error("Failed to resolve user %s: %s", args[i], strerror(-ret));
goto finish;
}
u = (uint32_t) uid;
if (!dbus_message_append_args(m,
DBUS_TYPE_UINT32, &u,
DBUS_TYPE_BOOLEAN, &b,
DBUS_TYPE_BOOLEAN, &interactive,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
ret = 0;
finish:
if (m)
dbus_message_unref(m);
dbus_error_free(&error);
return ret;
}
static int terminate_user(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL;
int ret = 0;
DBusError error;
unsigned i;
assert(bus);
assert(args);
dbus_error_init(&error);
for (i = 1; i < n; i++) {
uint32_t u;
uid_t uid;
DBusMessage *reply;
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"TerminateUser");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
ret = get_user_creds((const char**) (args+i), &uid, NULL, NULL);
if (ret < 0) {
log_error("Failed to look up user %s: %s", args[i], strerror(-ret));
goto finish;
}
u = (uint32_t) uid;
if (!dbus_message_append_args(m,
DBUS_TYPE_UINT32, &u,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
ret = 0;
finish:
if (m)
dbus_message_unref(m);
dbus_error_free(&error);
return ret;
}
static int kill_user(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL;
int ret = 0;
DBusError error;
unsigned i;
assert(bus);
assert(args);
dbus_error_init(&error);
if (!arg_kill_who)
arg_kill_who = "all";
for (i = 1; i < n; i++) {
DBusMessage *reply;
uid_t uid;
uint32_t u;
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"KillUser");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
ret = get_user_creds((const char**) (args+i), &uid, NULL, NULL);
if (ret < 0) {
log_error("Failed to look up user %s: %s", args[i], strerror(-ret));
goto finish;
}
u = (uint32_t) uid;
if (!dbus_message_append_args(m,
DBUS_TYPE_UINT32, &u,
DBUS_TYPE_INT32, arg_signal,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
ret = 0;
finish:
if (m)
dbus_message_unref(m);
dbus_error_free(&error);
return ret;
}
static int attach(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL;
int ret = 0;
DBusError error;
unsigned i;
dbus_bool_t interactive = true;
assert(bus);
assert(args);
dbus_error_init(&error);
for (i = 2; i < n; i++) {
DBusMessage *reply;
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"AttachDevice");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &args[1],
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_BOOLEAN, &interactive,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
finish:
if (m)
dbus_message_unref(m);
dbus_error_free(&error);
return ret;
}
static int flush_devices(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL, *reply = NULL;
int ret = 0;
DBusError error;
dbus_bool_t interactive = true;
assert(bus);
assert(args);
dbus_error_init(&error);
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"FlushDevices");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_BOOLEAN, &interactive,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return ret;
}
static int terminate_seat(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL;
int ret = 0;
DBusError error;
unsigned i;
assert(bus);
assert(args);
dbus_error_init(&error);
for (i = 1; i < n; i++) {
DBusMessage *reply;
m = dbus_message_new_method_call(
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"TerminateSeat");
if (!m) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &args[i],
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
finish:
if (m)
dbus_message_unref(m);
dbus_error_free(&error);
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"
" -H --host=[USER@]HOST\n"
" 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"
" 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
};
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' },
{ 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
* property, show it to him, even if it is
* empty. */
arg_all = true;
break;
}
case 'a':
arg_all = true;
break;
case ARG_NO_PAGER:
arg_no_pager = true;
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 },
{ "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;
}