diff options
Diffstat (limited to 'src/login/logind-dbus.c')
| -rw-r--r-- | src/login/logind-dbus.c | 1509 |
1 files changed, 0 insertions, 1509 deletions
diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c deleted file mode 100644 index 42dd54dc..00000000 --- a/src/login/logind-dbus.c +++ /dev/null @@ -1,1509 +0,0 @@ -/*-*- 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_can_multi_session(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 const BusProperty bus_login_manager_properties[] = { - { "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_path), true }, - { "Controllers", bus_property_append_strv, "as", offsetof(Manager, controllers), true }, - { "ResetControllers", bus_property_append_strv, "as", offsetof(Manager, reset_controllers), true }, - { "NAutoVTs", bus_property_append_unsigned, "u", offsetof(Manager, n_autovts) }, - { "KillOnlyUsers", bus_property_append_strv, "as", offsetof(Manager, kill_only_users), true }, - { "KillExcludeUsers", bus_property_append_strv, "as", offsetof(Manager, kill_exclude_users), true }, - { "KillUserProcesses", bus_property_append_bool, "b", offsetof(Manager, kill_user_processes) }, - { "IdleHint", bus_manager_append_idle_hint, "b", 0 }, - { "IdleSinceHint", bus_manager_append_idle_hint_since, "t", 0 }, - { "IdleSinceHintMonotonic", bus_manager_append_idle_hint_since, "t", 0 }, - { NULL, } -}; - -static DBusHandlerResult manager_message_handler( - DBusConnection *connection, - DBusMessage *message, - void *userdata) { - - Manager *m = userdata; - - 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 { - const BusBoundProperties bps[] = { - { "org.freedesktop.login1.Manager", bus_login_manager_properties, m }, - { NULL, } - }; - return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, bps); - } - - 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; -} |