diff options
Diffstat (limited to 'src/login/logind-session-dbus.c')
| -rw-r--r-- | src/login/logind-session-dbus.c | 798 |
1 files changed, 0 insertions, 798 deletions
diff --git a/src/login/logind-session-dbus.c b/src/login/logind-session-dbus.c deleted file mode 100644 index 22dea5db1f..0000000000 --- a/src/login/logind-session-dbus.c +++ /dev/null @@ -1,798 +0,0 @@ -/*** - 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 Lesser General Public License as published by - the Free Software Foundation; either version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <string.h> - -#include "alloc-util.h" -#include "bus-common-errors.h" -#include "bus-label.h" -#include "bus-util.h" -#include "fd-util.h" -#include "logind-session-device.h" -#include "logind-session.h" -#include "logind.h" -#include "signal-util.h" -#include "strv.h" -#include "util.h" - -static int property_get_user( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - _cleanup_free_ char *p = NULL; - Session *s = userdata; - - assert(bus); - assert(reply); - assert(s); - - p = user_bus_path(s->user); - if (!p) - return -ENOMEM; - - return sd_bus_message_append(reply, "(uo)", (uint32_t) s->user->uid, p); -} - -static int property_get_name( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Session *s = userdata; - - assert(bus); - assert(reply); - assert(s); - - return sd_bus_message_append(reply, "s", s->user->name); -} - -static int property_get_seat( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - _cleanup_free_ char *p = NULL; - Session *s = userdata; - - assert(bus); - assert(reply); - assert(s); - - p = s->seat ? seat_bus_path(s->seat) : strdup("/"); - if (!p) - return -ENOMEM; - - return sd_bus_message_append(reply, "(so)", s->seat ? s->seat->id : "", p); -} - -static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, session_type, SessionType); -static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, session_class, SessionClass); - -static int property_get_active( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Session *s = userdata; - - assert(bus); - assert(reply); - assert(s); - - return sd_bus_message_append(reply, "b", session_is_active(s)); -} - -static int property_get_state( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Session *s = userdata; - - assert(bus); - assert(reply); - assert(s); - - return sd_bus_message_append(reply, "s", session_state_to_string(session_get_state(s))); -} - -static int property_get_idle_hint( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Session *s = userdata; - - assert(bus); - assert(reply); - assert(s); - - return sd_bus_message_append(reply, "b", session_get_idle_hint(s, NULL) > 0); -} - -static int property_get_idle_since_hint( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Session *s = userdata; - dual_timestamp t = DUAL_TIMESTAMP_NULL; - uint64_t u; - int r; - - assert(bus); - assert(reply); - assert(s); - - r = session_get_idle_hint(s, &t); - if (r < 0) - return r; - - u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic; - - return sd_bus_message_append(reply, "t", u); -} - -static int property_get_locked_hint( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Session *s = userdata; - - assert(bus); - assert(reply); - assert(s); - - return sd_bus_message_append(reply, "b", session_get_locked_hint(s) > 0); -} - -int bus_session_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Session *s = userdata; - int r; - - assert(message); - assert(s); - - r = bus_verify_polkit_async( - message, - CAP_KILL, - "org.freedesktop.login1.manage", - NULL, - false, - s->user->uid, - &s->manager->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* Will call us back */ - - r = session_stop(s, true); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -int bus_session_method_activate(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Session *s = userdata; - int r; - - assert(message); - assert(s); - - r = session_activate(s); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -int bus_session_method_lock(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Session *s = userdata; - int r; - - assert(message); - assert(s); - - r = bus_verify_polkit_async( - message, - CAP_SYS_ADMIN, - "org.freedesktop.login1.lock-sessions", - NULL, - false, - s->user->uid, - &s->manager->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* Will call us back */ - - r = session_send_lock(s, strstr(sd_bus_message_get_member(message), "Lock")); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_set_idle_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - Session *s = userdata; - uid_t uid; - int r, b; - - assert(message); - assert(s); - - r = sd_bus_message_read(message, "b", &b); - if (r < 0) - return r; - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_euid(creds, &uid); - if (r < 0) - return r; - - if (uid != 0 && uid != s->user->uid) - return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set idle hint"); - - session_set_idle_hint(s, b); - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_set_locked_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - Session *s = userdata; - uid_t uid; - int r, b; - - assert(message); - assert(s); - - r = sd_bus_message_read(message, "b", &b); - if (r < 0) - return r; - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_euid(creds, &uid); - if (r < 0) - return r; - - if (uid != 0 && uid != s->user->uid) - return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set locked hint"); - - session_set_locked_hint(s, b); - - return sd_bus_reply_method_return(message, NULL); -} - -int bus_session_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Session *s = userdata; - const char *swho; - int32_t signo; - KillWho who; - int r; - - assert(message); - assert(s); - - r = sd_bus_message_read(message, "si", &swho, &signo); - if (r < 0) - return r; - - if (isempty(swho)) - who = KILL_ALL; - else { - who = kill_who_from_string(swho); - if (who < 0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho); - } - - if (!SIGNAL_VALID(signo)) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo); - - r = bus_verify_polkit_async( - message, - CAP_KILL, - "org.freedesktop.login1.manage", - NULL, - false, - s->user->uid, - &s->manager->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* Will call us back */ - - r = session_kill(s, who, signo); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_take_control(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - Session *s = userdata; - int r, force; - uid_t uid; - - assert(message); - assert(s); - - r = sd_bus_message_read(message, "b", &force); - if (r < 0) - return r; - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_euid(creds, &uid); - if (r < 0) - return r; - - if (uid != 0 && (force || uid != s->user->uid)) - return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may take control"); - - r = session_set_controller(s, sd_bus_message_get_sender(message), force); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_release_control(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Session *s = userdata; - - assert(message); - assert(s); - - if (!session_is_controller(s, sd_bus_message_get_sender(message))) - return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session"); - - session_drop_controller(s); - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_take_device(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Session *s = userdata; - uint32_t major, minor; - SessionDevice *sd; - dev_t dev; - int r; - - assert(message); - assert(s); - - r = sd_bus_message_read(message, "uu", &major, &minor); - if (r < 0) - return r; - - if (!session_is_controller(s, sd_bus_message_get_sender(message))) - return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session"); - - dev = makedev(major, minor); - sd = hashmap_get(s->devices, &dev); - if (sd) - /* We don't allow retrieving a device multiple times. - * The related ReleaseDevice call is not ref-counted. - * The caller should use dup() if it requires more - * than one fd (it would be functionally - * equivalent). */ - return sd_bus_error_setf(error, BUS_ERROR_DEVICE_IS_TAKEN, "Device already taken"); - - r = session_device_new(s, dev, &sd); - if (r < 0) - return r; - - r = sd_bus_reply_method_return(message, "hb", sd->fd, !sd->active); - if (r < 0) - session_device_free(sd); - - return r; -} - -static int method_release_device(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Session *s = userdata; - uint32_t major, minor; - SessionDevice *sd; - dev_t dev; - int r; - - assert(message); - assert(s); - - r = sd_bus_message_read(message, "uu", &major, &minor); - if (r < 0) - return r; - - if (!session_is_controller(s, sd_bus_message_get_sender(message))) - return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session"); - - dev = makedev(major, minor); - sd = hashmap_get(s->devices, &dev); - if (!sd) - return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken"); - - session_device_free(sd); - return sd_bus_reply_method_return(message, NULL); -} - -static int method_pause_device_complete(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Session *s = userdata; - uint32_t major, minor; - SessionDevice *sd; - dev_t dev; - int r; - - assert(message); - assert(s); - - r = sd_bus_message_read(message, "uu", &major, &minor); - if (r < 0) - return r; - - if (!session_is_controller(s, sd_bus_message_get_sender(message))) - return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session"); - - dev = makedev(major, minor); - sd = hashmap_get(s->devices, &dev); - if (!sd) - return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken"); - - session_device_complete_pause(sd); - - return sd_bus_reply_method_return(message, NULL); -} - -const sd_bus_vtable session_vtable[] = { - SD_BUS_VTABLE_START(0), - - SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Session, id), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("User", "(uo)", property_get_user, 0, SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Name", "s", property_get_name, 0, SD_BUS_VTABLE_PROPERTY_CONST), - BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Session, timestamp), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("VTNr", "u", NULL, offsetof(Session, vtnr), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Seat", "(so)", property_get_seat, 0, SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("TTY", "s", NULL, offsetof(Session, tty), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Display", "s", NULL, offsetof(Session, display), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Remote", "b", bus_property_get_bool, offsetof(Session, remote), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("RemoteHost", "s", NULL, offsetof(Session, remote_host), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("RemoteUser", "s", NULL, offsetof(Session, remote_user), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Session, service), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Desktop", "s", NULL, offsetof(Session, desktop), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Session, scope), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Leader", "u", bus_property_get_pid, offsetof(Session, leader), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Audit", "u", NULL, offsetof(Session, audit_id), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Session, type), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Session, class), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Active", "b", property_get_active, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0), - SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("LockedHint", "b", property_get_locked_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - - SD_BUS_METHOD("Terminate", NULL, NULL, bus_session_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("Activate", NULL, NULL, bus_session_method_activate, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("Lock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("Unlock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("SetIdleHint", "b", NULL, method_set_idle_hint, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("SetLockedHint", "b", NULL, method_set_locked_hint, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("Kill", "si", NULL, bus_session_method_kill, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("TakeControl", "b", NULL, method_take_control, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("ReleaseControl", NULL, NULL, method_release_control, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("TakeDevice", "uu", "hb", method_take_device, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("ReleaseDevice", "uu", NULL, method_release_device, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("PauseDeviceComplete", "uu", NULL, method_pause_device_complete, SD_BUS_VTABLE_UNPRIVILEGED), - - SD_BUS_SIGNAL("PauseDevice", "uus", 0), - SD_BUS_SIGNAL("ResumeDevice", "uuh", 0), - SD_BUS_SIGNAL("Lock", NULL, 0), - SD_BUS_SIGNAL("Unlock", NULL, 0), - - SD_BUS_VTABLE_END -}; - -int session_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { - Manager *m = userdata; - Session *session; - int r; - - assert(bus); - assert(path); - assert(interface); - assert(found); - assert(m); - - if (streq(path, "/org/freedesktop/login1/session/self")) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - sd_bus_message *message; - const char *name; - - message = sd_bus_get_current_message(bus); - if (!message) - return 0; - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_session(creds, &name); - if (r < 0) - return r; - - session = hashmap_get(m->sessions, name); - } else { - _cleanup_free_ char *e = NULL; - const char *p; - - p = startswith(path, "/org/freedesktop/login1/session/"); - if (!p) - return 0; - - e = bus_label_unescape(p); - if (!e) - return -ENOMEM; - - session = hashmap_get(m->sessions, e); - } - - if (!session) - return 0; - - *found = session; - return 1; -} - -char *session_bus_path(Session *s) { - _cleanup_free_ char *t = NULL; - - assert(s); - - t = bus_label_escape(s->id); - if (!t) - return NULL; - - return strappend("/org/freedesktop/login1/session/", t); -} - -int session_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { - _cleanup_strv_free_ char **l = NULL; - sd_bus_message *message; - Manager *m = userdata; - Session *session; - Iterator i; - int r; - - assert(bus); - assert(path); - assert(nodes); - - HASHMAP_FOREACH(session, m->sessions, i) { - char *p; - - p = session_bus_path(session); - if (!p) - return -ENOMEM; - - r = strv_consume(&l, p); - if (r < 0) - return r; - } - - message = sd_bus_get_current_message(bus); - if (message) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - const char *name; - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds); - if (r >= 0) { - r = sd_bus_creds_get_session(creds, &name); - if (r >= 0) { - session = hashmap_get(m->sessions, name); - if (session) { - r = strv_extend(&l, "/org/freedesktop/login1/session/self"); - if (r < 0) - return r; - } - } - } - } - - *nodes = l; - l = NULL; - - return 1; -} - -int session_send_signal(Session *s, bool new_session) { - _cleanup_free_ char *p = NULL; - - assert(s); - - p = session_bus_path(s); - if (!p) - return -ENOMEM; - - return sd_bus_emit_signal( - s->manager->bus, - "/org/freedesktop/login1", - "org.freedesktop.login1.Manager", - new_session ? "SessionNew" : "SessionRemoved", - "so", s->id, p); -} - -int session_send_changed(Session *s, const char *properties, ...) { - _cleanup_free_ char *p = NULL; - char **l; - - assert(s); - - if (!s->started) - return 0; - - p = session_bus_path(s); - if (!p) - return -ENOMEM; - - l = strv_from_stdarg_alloca(properties); - - return sd_bus_emit_properties_changed_strv(s->manager->bus, p, "org.freedesktop.login1.Session", l); -} - -int session_send_lock(Session *s, bool lock) { - _cleanup_free_ char *p = NULL; - - assert(s); - - p = session_bus_path(s); - if (!p) - return -ENOMEM; - - return sd_bus_emit_signal( - s->manager->bus, - p, - "org.freedesktop.login1.Session", - lock ? "Lock" : "Unlock", - NULL); -} - -int session_send_lock_all(Manager *m, bool lock) { - Session *session; - Iterator i; - int r = 0; - - assert(m); - - HASHMAP_FOREACH(session, m->sessions, i) { - int k; - - k = session_send_lock(session, lock); - if (k < 0) - r = k; - } - - return r; -} - -int session_send_create_reply(Session *s, sd_bus_error *error) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *c = NULL; - _cleanup_close_ int fifo_fd = -1; - _cleanup_free_ char *p = NULL; - - assert(s); - - /* This is called after the session scope and the user service - * were successfully created, and finishes where - * bus_manager_create_session() left off. */ - - if (!s->create_message) - return 0; - - if (!sd_bus_error_is_set(error) && (s->scope_job || s->user->service_job)) - return 0; - - c = s->create_message; - s->create_message = NULL; - - if (error) - return sd_bus_reply_method_error(c, error); - - fifo_fd = session_create_fifo(s); - if (fifo_fd < 0) - return fifo_fd; - - /* Update the session state file before we notify the client - * about the result. */ - session_save(s); - - p = session_bus_path(s); - if (!p) - return -ENOMEM; - - log_debug("Sending reply about created session: " - "id=%s object_path=%s uid=%u runtime_path=%s " - "session_fd=%d seat=%s vtnr=%u", - s->id, - p, - (uint32_t) s->user->uid, - s->user->runtime_path, - fifo_fd, - s->seat ? s->seat->id : "", - (uint32_t) s->vtnr); - - return sd_bus_reply_method_return( - c, "soshusub", - s->id, - p, - s->user->runtime_path, - fifo_fd, - (uint32_t) s->user->uid, - s->seat ? s->seat->id : "", - (uint32_t) s->vtnr, - false); -} |