| /*-*- 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" |
| |
| #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" \ |
| " </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" \ |
| " <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) { |
| |
| 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; |
| } |
| |
| 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_INVALID); |
| free(p); |
| |
| if (!b) { |
| r = -ENOMEM; |
| goto fail; |
| } |
| |
| close_nointr_nofail(fifo_fd); |
| *_reply = reply; |
| |
| 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; |
| } |
| |
| 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_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); |
| if (r == -ENOMEM) |
| goto oom; |
| |
| 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.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; |
| } |