+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2011 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 <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <string.h>
-#include <unistd.h>
-#include <pwd.h>
-
-#include "logind.h"
-#include "dbus-common.h"
-#include "strv.h"
-#include "polkit.h"
-#include "special.h"
-
-#define BUS_MANAGER_INTERFACE \
- " <interface name=\"org.freedesktop.login1.Manager\">\n" \
- " <method name=\"GetSession\">\n" \
- " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"session\" type=\"o\" direction=\"out\"/>\n" \
- " </method>\n" \
- " <method name=\"GetUser\">\n" \
- " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
- " <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \
- " </method>\n" \
- " <method name=\"GetSeat\">\n" \
- " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"seat\" type=\"o\" direction=\"out\"/>\n" \
- " </method>\n" \
- " <method name=\"ListSessions\">\n" \
- " <arg name=\"sessions\" type=\"a(susso)\" direction=\"out\"/>\n" \
- " </method>\n" \
- " <method name=\"ListUsers\">\n" \
- " <arg name=\"users\" type=\"a(uso)\" direction=\"out\"/>\n" \
- " </method>\n" \
- " <method name=\"ListSeats\">\n" \
- " <arg name=\"seats\" type=\"a(so)\" direction=\"out\"/>\n" \
- " </method>\n" \
- " <method name=\"CreateSession\">\n" \
- " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
- " <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \
- " <arg name=\"sevice\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"type\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"vtnr\" type=\"u\" direction=\"in\"/>\n" \
- " <arg name=\"tty\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"display\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"remote\" type=\"b\" direction=\"in\"/>\n" \
- " <arg name=\"remote_user\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"remote_host\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"controllers\" type=\"as\" direction=\"in\"/>\n" \
- " <arg name=\"reset_controllers\" type=\"as\" direction=\"in\"/>\n" \
- " <arg name=\"kill_processes\" type=\"b\" direction=\"in\"/>\n" \
- " <arg name=\"id\" type=\"s\" direction=\"out\"/>\n" \
- " <arg name=\"path\" type=\"o\" direction=\"out\"/>\n" \
- " <arg name=\"runtime_path\" type=\"o\" direction=\"out\"/>\n" \
- " <arg name=\"fd\" type=\"h\" direction=\"out\"/>\n" \
- " <arg name=\"seat\" type=\"s\" direction=\"out\"/>\n" \
- " <arg name=\"vtnr\" type=\"u\" direction=\"out\"/>\n" \
- " </method>\n" \
- " <method name=\"ActivateSession\">\n" \
- " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"LockSession\">\n" \
- " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"UnlockSession\">\n" \
- " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"KillSession\">\n" \
- " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"who\" type=\"s\"/>\n" \
- " <arg name=\"signal\" type=\"s\"/>\n" \
- " </method>\n" \
- " <method name=\"KillUser\">\n" \
- " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
- " <arg name=\"signal\" type=\"s\"/>\n" \
- " </method>\n" \
- " <method name=\"TerminateSession\">\n" \
- " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"TerminateUser\">\n" \
- " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"TerminateSeat\">\n" \
- " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"SetUserLinger\">\n" \
- " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
- " <arg name=\"b\" type=\"b\" direction=\"in\"/>\n" \
- " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"AttachDevice\">\n" \
- " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"sysfs\" type=\"s\" direction=\"in\"/>\n" \
- " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"FlushDevices\">\n" \
- " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"PowerOff\">\n" \
- " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <method name=\"Reboot\">\n" \
- " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
- " </method>\n" \
- " <signal name=\"SessionNew\">\n" \
- " <arg name=\"id\" type=\"s\"/>\n" \
- " <arg name=\"path\" type=\"o\"/>\n" \
- " </signal>\n" \
- " <signal name=\"SessionRemoved\">\n" \
- " <arg name=\"id\" type=\"s\"/>\n" \
- " <arg name=\"path\" type=\"o\"/>\n" \
- " </signal>\n" \
- " <signal name=\"UserNew\">\n" \
- " <arg name=\"uid\" type=\"u\"/>\n" \
- " <arg name=\"path\" type=\"o\"/>\n" \
- " </signal>\n" \
- " <signal name=\"UserRemoved\">\n" \
- " <arg name=\"uid\" type=\"u\"/>\n" \
- " <arg name=\"path\" type=\"o\"/>\n" \
- " </signal>\n" \
- " <signal name=\"SeatNew\">\n" \
- " <arg name=\"id\" type=\"s\"/>\n" \
- " <arg name=\"path\" type=\"o\"/>\n" \
- " </signal>\n" \
- " <signal name=\"SeatRemoved\">\n" \
- " <arg name=\"id\" type=\"s\"/>\n" \
- " <arg name=\"path\" type=\"o\"/>\n" \
- " </signal>\n" \
- " <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \
- " <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \
- " <property name=\"NAutoVTs\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"KillOnlyUsers\" type=\"as\" access=\"read\"/>\n" \
- " <property name=\"KillExcludeUsers\" type=\"as\" access=\"read\"/>\n" \
- " <property name=\"KillUserProcesses\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \
- " <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \
- " </interface>\n"
-
-#define INTROSPECTION_BEGIN \
- DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
- "<node>\n" \
- BUS_MANAGER_INTERFACE \
- BUS_PROPERTIES_INTERFACE \
- BUS_PEER_INTERFACE \
- BUS_INTROSPECTABLE_INTERFACE
-
-#define INTROSPECTION_END \
- "</node>\n"
-
-#define INTERFACES_LIST \
- BUS_GENERIC_INTERFACES_LIST \
- "org.freedesktop.login1.Manager\0"
-
-static int bus_manager_append_idle_hint(DBusMessageIter *i, const char *property, void *data) {
- Manager *m = data;
- dbus_bool_t b;
-
- assert(i);
- assert(property);
- assert(m);
-
- b = manager_get_idle_hint(m, NULL) > 0;
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
- return -ENOMEM;
-
- return 0;
-}
-
-static int bus_manager_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) {
- Manager *m = data;
- dual_timestamp t;
- uint64_t u;
-
- assert(i);
- assert(property);
- assert(m);
-
- manager_get_idle_hint(m, &t);
- u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
-
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
- return -ENOMEM;
-
- return 0;
-}
-
-static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMessage **_reply) {
- Session *session = NULL;
- User *user = NULL;
- const char *type, *seat, *tty, *display, *remote_user, *remote_host, *service;
- uint32_t uid, leader, audit_id = 0;
- dbus_bool_t remote, kill_processes;
- char **controllers = NULL, **reset_controllers = NULL;
- SessionType t;
- Seat *s;
- DBusMessageIter iter;
- int r;
- char *id = NULL, *p;
- uint32_t vtnr = 0;
- int fifo_fd = -1;
- DBusMessage *reply = NULL;
- bool b;
-
- assert(m);
- assert(message);
- assert(_reply);
-
- if (!dbus_message_iter_init(message, &iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &uid);
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &leader);
-
- if (leader <= 0 ||
- !dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &service);
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &type);
- t = session_type_from_string(type);
-
- if (t < 0 ||
- !dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &seat);
-
- if (isempty(seat))
- s = NULL;
- else {
- s = hashmap_get(m->seats, seat);
- if (!s)
- return -ENOENT;
- }
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &vtnr);
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &tty);
-
- if (tty_is_vc(tty)) {
- int v;
-
- if (!s)
- s = m->vtconsole;
- else if (s != m->vtconsole)
- return -EINVAL;
-
- v = vtnr_from_tty(tty);
-
- if (v <= 0)
- return v < 0 ? v : -EINVAL;
-
- if (vtnr <= 0)
- vtnr = (uint32_t) v;
- else if (vtnr != (uint32_t) v)
- return -EINVAL;
-
- } else if (!isempty(tty) && s && seat_is_vtconsole(s))
- return -EINVAL;
-
- if (s) {
- if (seat_is_vtconsole(s)) {
- if (vtnr <= 0 || vtnr > 63)
- return -EINVAL;
- } else {
- if (vtnr > 0)
- return -EINVAL;
- }
- }
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &display);
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &remote);
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &remote_user);
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &remote_host);
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
- dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- r = bus_parse_strv_iter(&iter, &controllers);
- if (r < 0)
- return -EINVAL;
-
- if (strv_contains(controllers, "systemd") ||
- !dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
- dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) {
- r = -EINVAL;
- goto fail;
- }
-
- r = bus_parse_strv_iter(&iter, &reset_controllers);
- if (r < 0)
- goto fail;
-
- if (strv_contains(reset_controllers, "systemd") ||
- !dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) {
- r = -EINVAL;
- goto fail;
- }
-
- dbus_message_iter_get_basic(&iter, &kill_processes);
-
- r = manager_add_user_by_uid(m, uid, &user);
- if (r < 0)
- goto fail;
-
- audit_session_from_pid(leader, &audit_id);
-
- if (audit_id > 0) {
- asprintf(&id, "%lu", (unsigned long) audit_id);
-
- if (!id) {
- r = -ENOMEM;
- goto fail;
- }
-
- session = hashmap_get(m->sessions, id);
-
- if (session) {
- free(id);
-
- fifo_fd = session_create_fifo(session);
- if (fifo_fd < 0) {
- r = fifo_fd;
- goto fail;
- }
-
- /* Session already exists, client is probably
- * something like "su" which changes uid but
- * is still the same audit session */
-
- reply = dbus_message_new_method_return(message);
- if (!reply) {
- r = -ENOMEM;
- goto fail;
- }
-
- p = session_bus_path(session);
- if (!p) {
- r = -ENOMEM;
- goto fail;
- }
-
- seat = session->seat ? session->seat->id : "";
- vtnr = session->vtnr;
- b = dbus_message_append_args(
- reply,
- DBUS_TYPE_STRING, &session->id,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_STRING, &session->user->runtime_path,
- DBUS_TYPE_UNIX_FD, &fifo_fd,
- DBUS_TYPE_STRING, &seat,
- DBUS_TYPE_UINT32, &vtnr,
- DBUS_TYPE_INVALID);
- free(p);
-
- if (!b) {
- r = -ENOMEM;
- goto fail;
- }
-
- close_nointr_nofail(fifo_fd);
- *_reply = reply;
-
- strv_free(controllers);
- strv_free(reset_controllers);
-
- return 0;
- }
-
- } else {
- do {
- free(id);
- asprintf(&id, "c%lu", ++m->session_counter);
-
- if (!id) {
- r = -ENOMEM;
- goto fail;
- }
-
- } while (hashmap_get(m->sessions, id));
- }
-
- r = manager_add_session(m, user, id, &session);
- free(id);
- if (r < 0)
- goto fail;
-
- session->leader = leader;
- session->audit_id = audit_id;
- session->type = t;
- session->remote = remote;
- session->controllers = controllers;
- session->reset_controllers = reset_controllers;
- session->kill_processes = kill_processes;
- session->vtnr = vtnr;
-
- controllers = reset_controllers = NULL;
-
- if (!isempty(tty)) {
- session->tty = strdup(tty);
- if (!session->tty) {
- r = -ENOMEM;
- goto fail;
- }
- }
-
- if (!isempty(display)) {
- session->display = strdup(display);
- if (!session->display) {
- r = -ENOMEM;
- goto fail;
- }
- }
-
- if (!isempty(remote_user)) {
- session->remote_user = strdup(remote_user);
- if (!session->remote_user) {
- r = -ENOMEM;
- goto fail;
- }
- }
-
- if (!isempty(remote_host)) {
- session->remote_host = strdup(remote_host);
- if (!session->remote_host) {
- r = -ENOMEM;
- goto fail;
- }
- }
-
- if (!isempty(service)) {
- session->service = strdup(service);
- if (!session->service) {
- r = -ENOMEM;
- goto fail;
- }
- }
-
- fifo_fd = session_create_fifo(session);
- if (fifo_fd < 0) {
- r = fifo_fd;
- goto fail;
- }
-
- if (s) {
- r = seat_attach_session(s, session);
- if (r < 0)
- goto fail;
- }
-
- r = session_start(session);
- if (r < 0)
- goto fail;
-
- reply = dbus_message_new_method_return(message);
- if (!reply) {
- r = -ENOMEM;
- goto fail;
- }
-
- p = session_bus_path(session);
- if (!p) {
- r = -ENOMEM;
- goto fail;
- }
-
- seat = s ? s->id : "";
- b = dbus_message_append_args(
- reply,
- DBUS_TYPE_STRING, &session->id,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_STRING, &session->user->runtime_path,
- DBUS_TYPE_UNIX_FD, &fifo_fd,
- DBUS_TYPE_STRING, &seat,
- DBUS_TYPE_UINT32, &vtnr,
- DBUS_TYPE_INVALID);
- free(p);
-
- if (!b) {
- r = -ENOMEM;
- goto fail;
- }
-
- close_nointr_nofail(fifo_fd);
- *_reply = reply;
-
- return 0;
-
-fail:
- strv_free(controllers);
- strv_free(reset_controllers);
-
- if (session)
- session_add_to_gc_queue(session);
-
- if (user)
- user_add_to_gc_queue(user);
-
- if (fifo_fd >= 0)
- close_nointr_nofail(fifo_fd);
-
- if (reply)
- dbus_message_unref(reply);
-
- return r;
-}
-
-static int trigger_device(Manager *m, struct udev_device *d) {
- struct udev_enumerate *e;
- struct udev_list_entry *first, *item;
- int r;
-
- assert(m);
-
- e = udev_enumerate_new(m->udev);
- if (!e) {
- r = -ENOMEM;
- goto finish;
- }
-
- if (d) {
- if (udev_enumerate_add_match_parent(e, d) < 0) {
- r = -EIO;
- goto finish;
- }
- }
-
- if (udev_enumerate_scan_devices(e) < 0) {
- r = -EIO;
- goto finish;
- }
-
- first = udev_enumerate_get_list_entry(e);
- udev_list_entry_foreach(item, first) {
- char *t;
- const char *p;
-
- p = udev_list_entry_get_name(item);
-
- t = strappend(p, "/uevent");
- if (!t) {
- r = -ENOMEM;
- goto finish;
- }
-
- write_one_line_file(t, "change");
- free(t);
- }
-
- r = 0;
-
-finish:
- if (e)
- udev_enumerate_unref(e);
-
- return r;
-}
-
-static int attach_device(Manager *m, const char *seat, const char *sysfs) {
- struct udev_device *d;
- char *rule = NULL, *file = NULL;
- const char *id_for_seat;
- int r;
-
- assert(m);
- assert(seat);
- assert(sysfs);
-
- d = udev_device_new_from_syspath(m->udev, sysfs);
- if (!d)
- return -ENODEV;
-
- if (!udev_device_has_tag(d, "seat")) {
- r = -ENODEV;
- goto finish;
- }
-
- id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT");
- if (!id_for_seat) {
- r = -ENODEV;
- goto finish;
- }
-
- if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0) {
- r = -ENOMEM;
- goto finish;
- }
-
- if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0) {
- r = -ENOMEM;
- goto finish;
- }
-
- mkdir_p("/etc/udev/rules.d", 0755);
- r = write_one_line_file_atomic(file, rule);
- if (r < 0)
- goto finish;
-
- r = trigger_device(m, d);
-
-finish:
- free(rule);
- free(file);
-
- if (d)
- udev_device_unref(d);
-
- return r;
-}
-
-static int flush_devices(Manager *m) {
- DIR *d;
-
- assert(m);
-
- d = opendir("/etc/udev/rules.d");
- if (!d) {
- if (errno != ENOENT)
- log_warning("Failed to open /etc/udev/rules.d: %m");
- } else {
- struct dirent *de;
-
- while ((de = readdir(d))) {
-
- if (!dirent_is_file(de))
- continue;
-
- if (!startswith(de->d_name, "72-seat-"))
- continue;
-
- if (!endswith(de->d_name, ".rules"))
- continue;
-
- if (unlinkat(dirfd(d), de->d_name, 0) < 0)
- log_warning("Failed to unlink %s: %m", de->d_name);
- }
-
- closedir(d);
- }
-
- return trigger_device(m, NULL);
-}
-
-static DBusHandlerResult manager_message_handler(
- DBusConnection *connection,
- DBusMessage *message,
- void *userdata) {
-
- Manager *m = userdata;
-
- const BusProperty properties[] = {
- { "org.freedesktop.login1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_path },
- { "org.freedesktop.login1.Manager", "Controllers", bus_property_append_strv, "as", m->controllers },
- { "org.freedesktop.login1.Manager", "ResetControllers", bus_property_append_strv, "as", m->reset_controllers },
- { "org.freedesktop.login1.Manager", "NAutoVTs", bus_property_append_unsigned, "u", &m->n_autovts },
- { "org.freedesktop.login1.Manager", "KillOnlyUsers", bus_property_append_strv, "as", m->kill_only_users },
- { "org.freedesktop.login1.Manager", "KillExcludeUsers", bus_property_append_strv, "as", m->kill_exclude_users },
- { "org.freedesktop.login1.Manager", "KillUserProcesses", bus_property_append_bool, "b", &m->kill_user_processes },
- { "org.freedesktop.login1.Manager", "IdleHint", bus_manager_append_idle_hint, "b", m },
- { "org.freedesktop.login1.Manager", "IdleSinceHint", bus_manager_append_idle_hint_since, "t", m },
- { "org.freedesktop.login1.Manager", "IdleSinceHintMonotonic", bus_manager_append_idle_hint_since, "t", m },
- { NULL, NULL, NULL, NULL, NULL }
- };
-
- DBusError error;
- DBusMessage *reply = NULL;
- int r;
-
- assert(connection);
- assert(message);
- assert(m);
-
- dbus_error_init(&error);
-
- if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSession")) {
- const char *name;
- char *p;
- Session *session;
- bool b;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- session = hashmap_get(m->sessions, name);
- if (!session)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- p = session_bus_path(session);
- if (!p)
- goto oom;
-
- b = dbus_message_append_args(
- reply,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_INVALID);
- free(p);
-
- if (!b)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUser")) {
- uint32_t uid;
- char *p;
- User *user;
- bool b;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_UINT32, &uid,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
- if (!user)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- p = user_bus_path(user);
- if (!p)
- goto oom;
-
- b = dbus_message_append_args(
- reply,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_INVALID);
- free(p);
-
- if (!b)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSeat")) {
- const char *name;
- char *p;
- Seat *seat;
- bool b;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- seat = hashmap_get(m->seats, name);
- if (!seat)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- p = seat_bus_path(seat);
- if (!p)
- goto oom;
-
- b = dbus_message_append_args(
- reply,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_INVALID);
- free(p);
-
- if (!b)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSessions")) {
- char *p;
- Session *session;
- Iterator i;
- DBusMessageIter iter, sub;
- const char *empty = "";
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- dbus_message_iter_init_append(reply, &iter);
-
- if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(susso)", &sub))
- goto oom;
-
- HASHMAP_FOREACH(session, m->sessions, i) {
- DBusMessageIter sub2;
- uint32_t uid;
-
- if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
- goto oom;
-
- uid = session->user->uid;
-
- p = session_bus_path(session);
- if (!p)
- goto oom;
-
- if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->id) ||
- !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) ||
- !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->user->name) ||
- !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, session->seat ? (const char**) &session->seat->id : &empty) ||
- !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
- free(p);
- goto oom;
- }
-
- free(p);
-
- if (!dbus_message_iter_close_container(&sub, &sub2))
- goto oom;
- }
-
- if (!dbus_message_iter_close_container(&iter, &sub))
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListUsers")) {
- char *p;
- User *user;
- Iterator i;
- DBusMessageIter iter, sub;
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- dbus_message_iter_init_append(reply, &iter);
-
- if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(uso)", &sub))
- goto oom;
-
- HASHMAP_FOREACH(user, m->users, i) {
- DBusMessageIter sub2;
- uint32_t uid;
-
- if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
- goto oom;
-
- uid = user->uid;
-
- p = user_bus_path(user);
- if (!p)
- goto oom;
-
- if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) ||
- !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &user->name) ||
- !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
- free(p);
- goto oom;
- }
-
- free(p);
-
- if (!dbus_message_iter_close_container(&sub, &sub2))
- goto oom;
- }
-
- if (!dbus_message_iter_close_container(&iter, &sub))
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSeats")) {
- char *p;
- Seat *seat;
- Iterator i;
- DBusMessageIter iter, sub;
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- dbus_message_iter_init_append(reply, &iter);
-
- if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(so)", &sub))
- goto oom;
-
- HASHMAP_FOREACH(seat, m->seats, i) {
- DBusMessageIter sub2;
-
- if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
- goto oom;
-
- p = seat_bus_path(seat);
- if (!p)
- goto oom;
-
- if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &seat->id) ||
- !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
- free(p);
- goto oom;
- }
-
- free(p);
-
- if (!dbus_message_iter_close_container(&sub, &sub2))
- goto oom;
- }
-
- if (!dbus_message_iter_close_container(&iter, &sub))
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CreateSession")) {
-
- r = bus_manager_create_session(m, message, &reply);
-
- /* Don't delay the work on OOM here, since it might be
- * triggered by a low RLIMIT_NOFILE here (since we
- * send a dupped fd to the client), and we'd rather
- * see this fail quickly then be retried later */
-
- if (r < 0)
- return bus_send_error_reply(connection, message, &error, r);
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSession")) {
- const char *name;
- Session *session;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- session = hashmap_get(m->sessions, name);
- if (!session)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- r = session_activate(session);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, r);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSession") ||
- dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "UnlockSession")) {
- const char *name;
- Session *session;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- session = hashmap_get(m->sessions, name);
- if (!session)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- if (session_send_lock(session, streq(dbus_message_get_member(message), "LockSession")) < 0)
- goto oom;
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillSession")) {
- const char *swho;
- int32_t signo;
- KillWho who;
- const char *name;
- Session *session;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_STRING, &swho,
- DBUS_TYPE_INT32, &signo,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- if (isempty(swho))
- who = KILL_ALL;
- else {
- who = kill_who_from_string(swho);
- if (who < 0)
- return bus_send_error_reply(connection, message, &error, -EINVAL);
- }
-
- if (signo <= 0 || signo >= _NSIG)
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- session = hashmap_get(m->sessions, name);
- if (!session)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- r = session_kill(session, who, signo);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, r);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillUser")) {
- uint32_t uid;
- User *user;
- int32_t signo;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_UINT32, &uid,
- DBUS_TYPE_INT32, &signo,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- if (signo <= 0 || signo >= _NSIG)
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
- if (!user)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- r = user_kill(user, signo);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, r);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSession")) {
- const char *name;
- Session *session;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- session = hashmap_get(m->sessions, name);
- if (!session)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- r = session_stop(session);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, r);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateUser")) {
- uint32_t uid;
- User *user;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_UINT32, &uid,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
- if (!user)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- r = user_stop(user);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, r);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSeat")) {
- const char *name;
- Seat *seat;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- seat = hashmap_get(m->seats, name);
- if (!seat)
- return bus_send_error_reply(connection, message, &error, -ENOENT);
-
- r = seat_stop_sessions(seat);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, r);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "SetUserLinger")) {
- uint32_t uid;
- struct passwd *pw;
- dbus_bool_t b, interactive;
- char *path;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_UINT32, &uid,
- DBUS_TYPE_BOOLEAN, &b,
- DBUS_TYPE_BOOLEAN, &interactive,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- errno = 0;
- pw = getpwuid(uid);
- if (!pw)
- return bus_send_error_reply(connection, message, NULL, errno ? -errno : -EINVAL);
-
- r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, &error);
- if (r < 0)
- return bus_send_error_reply(connection, message, &error, r);
-
- r = safe_mkdir("/var/lib/systemd/linger", 0755, 0, 0);
- if (r < 0)
- return bus_send_error_reply(connection, message, &error, r);
-
- path = strappend("/var/lib/systemd/linger/", pw->pw_name);
- if (!path)
- goto oom;
-
- if (b) {
- User *u;
-
- r = touch(path);
- free(path);
-
- if (r < 0)
- return bus_send_error_reply(connection, message, &error, r);
-
- if (manager_add_user_by_uid(m, uid, &u) >= 0)
- user_start(u);
-
- } else {
- User *u;
-
- r = unlink(path);
- free(path);
-
- if (r < 0 && errno != ENOENT)
- return bus_send_error_reply(connection, message, &error, -errno);
-
- u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
- if (u)
- user_add_to_gc_queue(u);
- }
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "AttachDevice")) {
- const char *sysfs, *seat;
- dbus_bool_t interactive;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &seat,
- DBUS_TYPE_STRING, &sysfs,
- DBUS_TYPE_BOOLEAN, &interactive,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- if (!path_startswith(sysfs, "/sys") || !seat_name_is_valid(seat))
- return bus_send_error_reply(connection, message, NULL, -EINVAL);
-
- r = verify_polkit(connection, message, "org.freedesktop.login1.attach-device", interactive, &error);
- if (r < 0)
- return bus_send_error_reply(connection, message, &error, r);
-
- r = attach_device(m, seat, sysfs);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, -EINVAL);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "FlushDevices")) {
- dbus_bool_t interactive;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_BOOLEAN, &interactive,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- r = verify_polkit(connection, message, "org.freedesktop.login1.flush-devices", interactive, &error);
- if (r < 0)
- return bus_send_error_reply(connection, message, &error, r);
-
- r = flush_devices(m);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, -EINVAL);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "PowerOff") ||
- dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Reboot")) {
- dbus_bool_t interactive;
- bool multiple_sessions;
- DBusMessage *forward, *freply;
- const char *name;
- const char *mode = "replace";
- const char *action;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_BOOLEAN, &interactive,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- multiple_sessions = hashmap_size(m->sessions) > 1;
-
- if (!multiple_sessions) {
- Session *s;
-
- /* Hmm, there's only one session, but let's
- * make sure it actually belongs to the user
- * who is asking. If not, better be safe than
- * sorry. */
-
- s = hashmap_first(m->sessions);
- if (s) {
- unsigned long ul;
-
- ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), &error);
- if (ul == (unsigned long) -1)
- return bus_send_error_reply(connection, message, &error, -EIO);
-
- multiple_sessions = s->user->uid != ul;
- }
- }
-
- if (streq(dbus_message_get_member(message), "PowerOff")) {
- if (multiple_sessions)
- action = "org.freedesktop.login1.power-off-multiple-sessions";
- else
- action = "org.freedesktop.login1.power-off";
-
- name = SPECIAL_POWEROFF_TARGET;
- } else {
- if (multiple_sessions)
- action = "org.freedesktop.login1.reboot-multiple-sessions";
- else
- action = "org.freedesktop.login1.reboot";
-
- name = SPECIAL_REBOOT_TARGET;
- }
-
- r = verify_polkit(connection, message, action, interactive, &error);
- if (r < 0)
- return bus_send_error_reply(connection, message, &error, r);
-
- forward = dbus_message_new_method_call(
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "StartUnit");
- if (!forward)
- return bus_send_error_reply(connection, message, NULL, -ENOMEM);
-
- if (!dbus_message_append_args(forward,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_STRING, &mode,
- DBUS_TYPE_INVALID)) {
- dbus_message_unref(forward);
- return bus_send_error_reply(connection, message, NULL, -ENOMEM);
- }
-
- freply = dbus_connection_send_with_reply_and_block(connection, forward, -1, &error);
- dbus_message_unref(forward);
-
- if (!freply)
- return bus_send_error_reply(connection, message, &error, -EIO);
-
- dbus_message_unref(freply);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
- char *introspection = NULL;
- FILE *f;
- Iterator i;
- Session *session;
- Seat *seat;
- User *user;
- size_t size;
- char *p;
-
- if (!(reply = dbus_message_new_method_return(message)))
- goto oom;
-
- /* We roll our own introspection code here, instead of
- * relying on bus_default_message_handler() because we
- * need to generate our introspection string
- * dynamically. */
-
- if (!(f = open_memstream(&introspection, &size)))
- goto oom;
-
- fputs(INTROSPECTION_BEGIN, f);
-
- HASHMAP_FOREACH(seat, m->seats, i) {
- p = bus_path_escape(seat->id);
-
- if (p) {
- fprintf(f, "<node name=\"seat/%s\"/>", p);
- free(p);
- }
- }
-
- HASHMAP_FOREACH(user, m->users, i)
- fprintf(f, "<node name=\"user/%llu\"/>", (unsigned long long) user->uid);
-
- HASHMAP_FOREACH(session, m->sessions, i) {
- p = bus_path_escape(session->id);
-
- if (p) {
- fprintf(f, "<node name=\"session/%s\"/>", p);
- free(p);
- }
- }
-
- fputs(INTROSPECTION_END, f);
-
- if (ferror(f)) {
- fclose(f);
- free(introspection);
- goto oom;
- }
-
- fclose(f);
-
- if (!introspection)
- goto oom;
-
- if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
- free(introspection);
- goto oom;
- }
-
- free(introspection);
- } else
- return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties);
-
- if (reply) {
- if (!dbus_connection_send(connection, reply, NULL))
- goto oom;
-
- dbus_message_unref(reply);
- }
-
- return DBUS_HANDLER_RESULT_HANDLED;
-
-oom:
- if (reply)
- dbus_message_unref(reply);
-
- dbus_error_free(&error);
-
- return DBUS_HANDLER_RESULT_NEED_MEMORY;
-}
-
-const DBusObjectPathVTable bus_manager_vtable = {
- .message_function = manager_message_handler
-};
-
-DBusHandlerResult bus_message_filter(
- DBusConnection *connection,
- DBusMessage *message,
- void *userdata) {
-
- Manager *m = userdata;
- DBusError error;
-
- assert(m);
- assert(connection);
- assert(message);
-
- dbus_error_init(&error);
-
- if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) {
- const char *cgroup;
-
- if (!dbus_message_get_args(message, &error,
- DBUS_TYPE_STRING, &cgroup,
- DBUS_TYPE_INVALID))
- log_error("Failed to parse Released message: %s", bus_error_message(&error));
- else
- manager_cgroup_notify_empty(m, cgroup);
- }
-
- dbus_error_free(&error);
-
- return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
-}
-
-int manager_send_changed(Manager *manager, const char *properties) {
- DBusMessage *m;
- int r = -ENOMEM;
-
- assert(manager);
-
- m = bus_properties_changed_new("/org/freedesktop/login1", "org.freedesktop.login1.Manager", properties);
- if (!m)
- goto finish;
-
- if (!dbus_connection_send(manager->bus, m, NULL))
- goto finish;
-
- r = 0;
-
-finish:
- if (m)
- dbus_message_unref(m);
-
- return r;
-}
~ianmdlvl / elogind.git / blobdiff