X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flogin%2Flogind-session-dbus.c;h=5f6bafbc6aff99c75d8f988dab6db001c3b18b68;hb=299404a19f26aa4f203042d8285ee0b7afa5bf40;hp=dc0ef5b3d6336c9370d7ed2f31dc09876231aebb;hpb=4bba9156da3e1df2cee24d10d7cd88c776ef4179;p=elogind.git
diff --git a/src/login/logind-session-dbus.c b/src/login/logind-session-dbus.c
index dc0ef5b3d..5f6bafbc6 100644
--- a/src/login/logind-session-dbus.c
+++ b/src/login/logind-session-dbus.c
@@ -6,16 +6,16 @@
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
+ 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
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see .
***/
@@ -24,6 +24,7 @@
#include "logind.h"
#include "logind-session.h"
+#include "logind-session-device.h"
#include "dbus-common.h"
#include "util.h"
@@ -40,12 +41,41 @@
" \n" \
" \n" \
" \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
+ " \n" \
" \n" \
" \n" \
" \n" \
" \n" \
" \n" \
- " \n" \
" \n" \
" \n" \
" \n" \
@@ -53,14 +83,14 @@
" \n" \
" \n" \
" \n" \
- " \n" \
+ " \n" \
+ " \n" \
" \n" \
" \n" \
" \n" \
+ " \n" \
" \n" \
- " \n" \
- " \n" \
- " \n" \
+ " \n" \
" \n" \
" \n" \
" \n" \
@@ -104,12 +134,8 @@ static int bus_session_append_seat(DBusMessageIter *i, const char *property, voi
}
if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &id) ||
- !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &path)) {
- free(p);
+ !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &path))
return -ENOMEM;
- }
-
- free(p);
if (!dbus_message_iter_close_container(i, &sub))
return -ENOMEM;
@@ -119,27 +145,23 @@ static int bus_session_append_seat(DBusMessageIter *i, const char *property, voi
static int bus_session_append_user(DBusMessageIter *i, const char *property, void *data) {
DBusMessageIter sub;
- Session *s = data;
- char *p = NULL;
+ User *u = data;
+ _cleanup_free_ char *p = NULL;
assert(i);
assert(property);
- assert(s);
+ assert(u);
if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
return -ENOMEM;
- p = user_bus_path(s->user);
+ p = user_bus_path(u);
if (!p)
return -ENOMEM;
- if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &s->user->uid) ||
- !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
- free(p);
+ if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &u->uid) ||
+ !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p))
return -ENOMEM;
- }
-
- free(p);
if (!dbus_message_iter_close_container(i, &sub))
return -ENOMEM;
@@ -181,12 +203,16 @@ static int bus_session_append_idle_hint_since(DBusMessageIter *i, const char *pr
Session *s = data;
dual_timestamp t;
uint64_t u;
+ int r;
assert(i);
assert(property);
assert(s);
- session_get_idle_hint(s, &t);
+ r = session_get_idle_hint(s, &t);
+ if (r < 0)
+ return r;
+
u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
@@ -196,10 +222,27 @@ static int bus_session_append_idle_hint_since(DBusMessageIter *i, const char *pr
}
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_session_append_type, session_type, SessionType);
+static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_session_append_class, session_class, SessionClass);
+
+static int bus_session_append_state(DBusMessageIter *i, const char *property, void *data) {
+ Session *s = data;
+ const char *state;
+
+ assert(i);
+ assert(property);
+ assert(s);
+
+ state = session_state_to_string(session_get_state(s));
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
+ return -ENOMEM;
+
+ return 0;
+}
static int get_session_for_path(Manager *m, const char *path, Session **_s) {
+ _cleanup_free_ char *id = NULL;
Session *s;
- char *id;
assert(m);
assert(path);
@@ -213,8 +256,6 @@ static int get_session_for_path(Manager *m, const char *path, Session **_s) {
return -ENOMEM;
s = hashmap_get(m->sessions, id);
- free(id);
-
if (!s)
return -ENOENT;
@@ -222,41 +263,44 @@ static int get_session_for_path(Manager *m, const char *path, Session **_s) {
return 0;
}
+static const BusProperty bus_login_session_properties[] = {
+ { "Id", bus_property_append_string, "s", offsetof(Session, id), true },
+ { "Timestamp", bus_property_append_usec, "t", offsetof(Session, timestamp.realtime) },
+ { "TimestampMonotonic", bus_property_append_usec, "t", offsetof(Session, timestamp.monotonic) },
+ { "VTNr", bus_property_append_uint32, "u", offsetof(Session, vtnr) },
+ { "Seat", bus_session_append_seat, "(so)", 0 },
+ { "TTY", bus_property_append_string, "s", offsetof(Session, tty), true },
+ { "Display", bus_property_append_string, "s", offsetof(Session, display), true },
+ { "Remote", bus_property_append_bool, "b", offsetof(Session, remote) },
+ { "RemoteUser", bus_property_append_string, "s", offsetof(Session, remote_user), true },
+ { "RemoteHost", bus_property_append_string, "s", offsetof(Session, remote_host), true },
+ { "Service", bus_property_append_string, "s", offsetof(Session, service), true },
+ { "Scope", bus_property_append_string, "s", offsetof(Session, scope), true },
+ { "Leader", bus_property_append_pid, "u", offsetof(Session, leader) },
+ { "Audit", bus_property_append_uint32, "u", offsetof(Session, audit_id) },
+ { "Type", bus_session_append_type, "s", offsetof(Session, type) },
+ { "Class", bus_session_append_class, "s", offsetof(Session, class) },
+ { "Active", bus_session_append_active, "b", 0 },
+ { "State", bus_session_append_state, "s", 0 },
+ { "IdleHint", bus_session_append_idle_hint, "b", 0 },
+ { "IdleSinceHint", bus_session_append_idle_hint_since, "t", 0 },
+ { "IdleSinceHintMonotonic", bus_session_append_idle_hint_since, "t", 0 },
+ { NULL, }
+};
+
+static const BusProperty bus_login_session_user_properties[] = {
+ { "User", bus_session_append_user, "(uo)", 0 },
+ { "Name", bus_property_append_string, "s", offsetof(User, name), true },
+ { NULL, }
+};
+
static DBusHandlerResult session_message_dispatch(
Session *s,
DBusConnection *connection,
DBusMessage *message) {
- const BusProperty properties[] = {
- { "org.freedesktop.login1.Session", "Id", bus_property_append_string, "s", s->id },
- { "org.freedesktop.login1.Session", "User", bus_session_append_user, "(uo)", s },
- { "org.freedesktop.login1.Session", "Name", bus_property_append_string, "s", s->user->name },
- { "org.freedesktop.login1.Session", "Timestamp", bus_property_append_usec, "t", &s->timestamp.realtime },
- { "org.freedesktop.login1.Session", "TimestampMonotonic", bus_property_append_usec, "t", &s->timestamp.monotonic },
- { "org.freedesktop.login1.Session", "ControlGroupPath", bus_property_append_string, "s", s->cgroup_path },
- { "org.freedesktop.login1.Session", "VTNr", bus_property_append_uint32, "u", &s->vtnr },
- { "org.freedesktop.login1.Session", "Seat", bus_session_append_seat, "(so)", s },
- { "org.freedesktop.login1.Session", "TTY", bus_property_append_string, "s", s->tty },
- { "org.freedesktop.login1.Session", "Display", bus_property_append_string, "s", s->display },
- { "org.freedesktop.login1.Session", "Remote", bus_property_append_bool, "b", &s->remote },
- { "org.freedesktop.login1.Session", "RemoteUser", bus_property_append_string, "s", s->remote_user },
- { "org.freedesktop.login1.Session", "RemoteHost", bus_property_append_string, "s", s->remote_host },
- { "org.freedesktop.login1.Session", "Service", bus_property_append_string, "s", s->service },
- { "org.freedesktop.login1.Session", "Leader", bus_property_append_pid, "u", &s->leader },
- { "org.freedesktop.login1.Session", "Audit", bus_property_append_uint32, "u", &s->audit_id },
- { "org.freedesktop.login1.Session", "Type", bus_session_append_type, "s", &s->type },
- { "org.freedesktop.login1.Session", "Active", bus_session_append_active, "b", s },
- { "org.freedesktop.login1.Session", "Controllers", bus_property_append_strv, "as", s->controllers },
- { "org.freedesktop.login1.Session", "ResetControllers", bus_property_append_strv, "as", s->reset_controllers },
- { "org.freedesktop.login1.Session", "KillProcesses", bus_property_append_bool, "b", &s->kill_processes },
- { "org.freedesktop.login1.Session", "IdleHint", bus_session_append_idle_hint, "b", s },
- { "org.freedesktop.login1.Session", "IdleSinceHint", bus_session_append_idle_hint_since, "t", s },
- { "org.freedesktop.login1.Session", "IdleSinceHintMonotonic", bus_session_append_idle_hint_since, "t", s },
- { NULL, NULL, NULL, NULL, NULL }
- };
-
DBusError error;
- DBusMessage *reply = NULL;
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
int r;
assert(s);
@@ -288,7 +332,7 @@ static DBusHandlerResult session_message_dispatch(
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Lock") ||
dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Unlock")) {
- if (session_send_signal(s, streq(dbus_message_get_member(message), "Lock")) < 0)
+ if (session_send_lock(s, streq(dbus_message_get_member(message), "Lock")) < 0)
goto oom;
reply = dbus_message_new_method_return(message);
@@ -351,22 +395,164 @@ static DBusHandlerResult session_message_dispatch(
if (!reply)
goto oom;
- } else
- return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, properties);
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "TakeControl")) {
+ dbus_bool_t force;
+ unsigned long ul;
- if (reply) {
- if (!dbus_connection_send(connection, reply, NULL))
+ if (!dbus_message_get_args(
+ message,
+ &error,
+ DBUS_TYPE_BOOLEAN, &force,
+ DBUS_TYPE_INVALID))
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ 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);
+
+ if (ul != 0 && (force || ul != s->user->uid))
+ return bus_send_error_reply(connection, message, NULL, -EPERM);
+
+ r = session_set_controller(s, bus_message_get_sender_with_fallback(message), force);
+ 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.Session", "ReleaseControl")) {
+ const char *sender = bus_message_get_sender_with_fallback(message);
+
+ if (!session_is_controller(s, sender))
+ return bus_send_error_reply(connection, message, NULL, -EPERM);
+
+ session_drop_controller(s);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "TakeDevice")) {
+ SessionDevice *sd;
+ bool b;
+ dbus_bool_t paused;
+ uint32_t major, minor;
+ dev_t dev;
+
+ if (!session_is_controller(s, bus_message_get_sender_with_fallback(message)))
+ return bus_send_error_reply(connection, message, NULL, -EPERM);
+
+ if (!dbus_message_get_args(
+ message,
+ &error,
+ DBUS_TYPE_UINT32, &major,
+ DBUS_TYPE_UINT32, &minor,
+ DBUS_TYPE_INVALID))
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ 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 bus_send_error_reply(connection, message, &error, -EBUSY);
+ }
+
+ r = session_device_new(s, dev, &sd);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, NULL, r);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply) {
+ session_device_free(sd);
goto oom;
+ }
+
+ paused = !sd->active;
+ b = dbus_message_append_args(
+ reply,
+ DBUS_TYPE_UNIX_FD, &sd->fd,
+ DBUS_TYPE_BOOLEAN, &paused,
+ DBUS_TYPE_INVALID);
+ if (!b) {
+ session_device_free(sd);
+ return bus_send_error_reply(connection, message, NULL, -ENOMEM);
+ }
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "ReleaseDevice")) {
+ SessionDevice *sd;
+ uint32_t major, minor;
+ dev_t dev;
- dbus_message_unref(reply);
+ if (!session_is_controller(s, bus_message_get_sender_with_fallback(message)))
+ return bus_send_error_reply(connection, message, NULL, -EPERM);
+
+ if (!dbus_message_get_args(
+ message,
+ &error,
+ DBUS_TYPE_UINT32, &major,
+ DBUS_TYPE_UINT32, &minor,
+ DBUS_TYPE_INVALID))
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ dev = makedev(major, minor);
+ sd = hashmap_get(s->devices, &dev);
+ if (!sd)
+ return bus_send_error_reply(connection, message, NULL, -ENODEV);
+
+ session_device_free(sd);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "PauseDeviceComplete")) {
+ SessionDevice *sd;
+ uint32_t major, minor;
+ dev_t dev;
+
+ if (!session_is_controller(s, bus_message_get_sender_with_fallback(message)))
+ return bus_send_error_reply(connection, message, NULL, -EPERM);
+
+ if (!dbus_message_get_args(
+ message,
+ &error,
+ DBUS_TYPE_UINT32, &major,
+ DBUS_TYPE_UINT32, &minor,
+ DBUS_TYPE_INVALID))
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ dev = makedev(major, minor);
+ sd = hashmap_get(s->devices, &dev);
+ if (!sd)
+ return bus_send_error_reply(connection, message, NULL, -ENODEV);
+
+ session_device_complete_pause(sd);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ } else {
+ const BusBoundProperties bps[] = {
+ { "org.freedesktop.login1.Session", bus_login_session_properties, s },
+ { "org.freedesktop.login1.Session", bus_login_session_user_properties, s->user },
+ { NULL, }
+ };
+ return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
+ }
+
+ if (reply) {
+ if (!bus_maybe_send_reply(connection, message, reply))
+ goto oom;
}
return DBUS_HANDLER_RESULT_HANDLED;
oom:
- if (reply)
- dbus_message_unref(reply);
-
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NEED_MEMORY;
@@ -406,7 +592,7 @@ const DBusObjectPathVTable bus_session_vtable = {
};
char *session_bus_path(Session *s) {
- char *t, *r;
+ _cleanup_free_ char *t = NULL;
assert(s);
@@ -414,16 +600,12 @@ char *session_bus_path(Session *s) {
if (!t)
return NULL;
- r = strappend("/org/freedesktop/login1/session/", t);
- free(t);
-
- return r;
+ return strappend("/org/freedesktop/login1/session/", t);
}
int session_send_signal(Session *s, bool new_session) {
- DBusMessage *m;
- int r = -ENOMEM;
- char *p = NULL;
+ _cleanup_dbus_message_unref_ DBusMessage *m = NULL;
+ _cleanup_free_ char *p = NULL;
assert(s);
@@ -436,31 +618,24 @@ int session_send_signal(Session *s, bool new_session) {
p = session_bus_path(s);
if (!p)
- goto finish;
+ return -ENOMEM;
if (!dbus_message_append_args(
m,
DBUS_TYPE_STRING, &s->id,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID))
- goto finish;
+ return -ENOMEM;
if (!dbus_connection_send(s->manager->bus, m, NULL))
- goto finish;
-
- r = 0;
-
-finish:
- dbus_message_unref(m);
- free(p);
+ return -ENOMEM;
- return r;
+ return 0;
}
int session_send_changed(Session *s, const char *properties) {
- DBusMessage *m;
- int r = -ENOMEM;
- char *p = NULL;
+ _cleanup_dbus_message_unref_ DBusMessage *m = NULL;
+ _cleanup_free_ char *p = NULL;
assert(s);
@@ -473,25 +648,18 @@ int session_send_changed(Session *s, const char *properties) {
m = bus_properties_changed_new(p, "org.freedesktop.login1.Session", properties);
if (!m)
- goto finish;
+ return -ENOMEM;
if (!dbus_connection_send(s->manager->bus, m, NULL))
- goto finish;
-
- r = 0;
-
-finish:
- if (m)
- dbus_message_unref(m);
- free(p);
+ return -ENOMEM;
- return r;
+ return 0;
}
int session_send_lock(Session *s, bool lock) {
- DBusMessage *m;
+ _cleanup_dbus_message_unref_ DBusMessage *m = NULL;
bool b;
- char *p;
+ _cleanup_free_ char *p = NULL;
assert(s);
@@ -500,16 +668,109 @@ int session_send_lock(Session *s, bool lock) {
return -ENOMEM;
m = dbus_message_new_signal(p, "org.freedesktop.login1.Session", lock ? "Lock" : "Unlock");
- free(p);
if (!m)
return -ENOMEM;
b = dbus_connection_send(s->manager->bus, m, NULL);
- dbus_message_unref(m);
-
if (!b)
return -ENOMEM;
return 0;
}
+
+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, DBusError *error) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+
+ assert(s);
+
+ if (!s->create_message)
+ return 0;
+
+ /* This is called after the session scope was successfully
+ * created, and finishes where bus_manager_create_session()
+ * left off. */
+
+ if (error) {
+ DBusError buffer;
+
+ dbus_error_init(&buffer);
+
+ if (!dbus_error_is_set(error)) {
+ dbus_set_error_const(&buffer, DBUS_ERROR_INVALID_ARGS, "Invalid Arguments");
+ error = &buffer;
+ }
+
+ reply = dbus_message_new_error(s->create_message, error->name, error->message);
+ dbus_error_free(&buffer);
+
+ if (!reply)
+ return log_oom();
+ } else {
+ _cleanup_close_ int fifo_fd = -1;
+ _cleanup_free_ char *path = NULL;
+ const char *cseat;
+ uint32_t vtnr;
+ dbus_bool_t exists;
+
+ fifo_fd = session_create_fifo(s);
+ if (fifo_fd < 0) {
+ log_error("Failed to create fifo: %s", strerror(-fifo_fd));
+ return fifo_fd;
+ }
+
+ path = session_bus_path(s);
+ if (!path)
+ return log_oom();
+
+ reply = dbus_message_new_method_return(s->create_message);
+ if (!reply)
+ return log_oom();
+
+ cseat = s->seat ? s->seat->id : "";
+ vtnr = s->vtnr;
+ exists = false;
+
+ if (!dbus_message_append_args(
+ reply,
+ DBUS_TYPE_STRING, &s->id,
+ DBUS_TYPE_OBJECT_PATH, &path,
+ DBUS_TYPE_STRING, &s->user->runtime_path,
+ DBUS_TYPE_UNIX_FD, &fifo_fd,
+ DBUS_TYPE_STRING, &cseat,
+ DBUS_TYPE_UINT32, &vtnr,
+ DBUS_TYPE_BOOLEAN, &exists,
+ DBUS_TYPE_INVALID))
+ return log_oom();
+ }
+
+ /* Update the state file before we notify the client about the
+ * result */
+ session_save(s);
+
+ if (!dbus_connection_send(s->manager->bus, reply, NULL))
+ return log_oom();
+
+ dbus_message_unref(s->create_message);
+ s->create_message = NULL;
+
+ return 0;
+}