-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+/* SPDX-License-Identifier: LGPL-2.1+ */
-/***
- This file is part of systemd.
-
- Copyright 2010 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 "sd-bus.h"
+#include "alloc-util.h"
+#include "dbus-job.h"
#include "dbus.h"
+#include "job.h"
#include "log.h"
-#include "dbus-job.h"
-#include "dbus-common.h"
-
-#define BUS_JOB_INTERFACE \
- " <interface name=\"org.freedesktop.systemd1.Job\">\n" \
- " <method name=\"Cancel\"/>\n" \
- " <property name=\"Id\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"Unit\" type=\"(so)\" access=\"read\"/>\n" \
- " <property name=\"JobType\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"State\" type=\"s\" access=\"read\"/>\n" \
- " </interface>\n"
-
-#define INTROSPECTION \
- DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
- "<node>\n" \
- BUS_JOB_INTERFACE \
- BUS_PROPERTIES_INTERFACE \
- BUS_PEER_INTERFACE \
- BUS_INTROSPECTABLE_INTERFACE \
- "</node>\n"
-
-const char bus_job_interface[] _introspect_("Job") = BUS_JOB_INTERFACE;
-
-#define INTERFACES_LIST \
- BUS_GENERIC_INTERFACES_LIST \
- "org.freedesktop.systemd1.Job\0"
-
-#define INVALIDATING_PROPERTIES \
- "State\0"
-
-static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_state, job_state, JobState);
-static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_type, job_type, JobType);
-
-static int bus_job_append_unit(DBusMessageIter *i, const char *property, void *data) {
- Job *j = data;
- DBusMessageIter sub;
- char *p;
-
- assert(i);
- assert(property);
+#include "selinux-access.h"
+#include "string-util.h"
+
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, job_type, JobType);
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_state, job_state, JobState);
+
+static int property_get_unit(
+ 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;
+ Job *j = userdata;
+
+ assert(bus);
+ assert(reply);
assert(j);
- if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
- return -ENOMEM;
-
- if (!(p = unit_dbus_path(j->unit)))
+ p = unit_dbus_path(j->unit);
+ if (!p)
return -ENOMEM;
- if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &j->unit->id) ||
- !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
- free(p);
- return -ENOMEM;
- }
-
- free(p);
-
- if (!dbus_message_iter_close_container(i, &sub))
- return -ENOMEM;
-
- return 0;
+ return sd_bus_message_append(reply, "(so)", j->unit->id, p);
}
-static const BusProperty bus_job_properties[] = {
- { "Id", bus_property_append_uint32, "u", offsetof(Job, id) },
- { "State", bus_job_append_state, "s", offsetof(Job, state) },
- { "JobType", bus_job_append_type, "s", offsetof(Job, type) },
- { "Unit", bus_job_append_unit, "(so)", 0 },
- { NULL, }
-};
-
-static DBusHandlerResult bus_job_message_dispatch(Job *j, DBusConnection *connection, DBusMessage *message) {
- DBusMessage *reply = NULL;
-
- if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Job", "Cancel")) {
- if (!(reply = dbus_message_new_method_return(message)))
- goto oom;
+int bus_job_method_cancel(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Job *j = userdata;
+ int r;
- job_finish_and_invalidate(j, JOB_CANCELED);
+ assert(message);
+ assert(j);
- } else {
- const BusBoundProperties bps[] = {
- { "org.freedesktop.systemd1.Job", bus_job_properties, j },
- { NULL, }
- };
- return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
- }
+ r = mac_selinux_unit_access_check(j->unit, message, "stop", error);
+ if (r < 0)
+ return r;
- if (reply) {
- if (!dbus_connection_send(connection, reply, NULL))
- goto oom;
+ /* Access is granted to the job owner */
+ if (!sd_bus_track_contains(j->bus_track, sd_bus_message_get_sender(message))) {
- dbus_message_unref(reply);
+ /* And for everybody else consult PolicyKit */
+ r = bus_verify_manage_units_async(j->unit->manager, message, error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
}
- return DBUS_HANDLER_RESULT_HANDLED;
-
-oom:
- if (reply)
- dbus_message_unref(reply);
+ job_finish_and_invalidate(j, JOB_CANCELED, true, false);
- return DBUS_HANDLER_RESULT_NEED_MEMORY;
+ return sd_bus_reply_method_return(message, NULL);
}
-static DBusHandlerResult bus_job_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
- Manager *m = data;
- Job *j;
- int r;
- DBusMessage *reply;
-
- assert(connection);
- assert(message);
- assert(m);
+int bus_job_method_get_waiting_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_free_ Job **list = NULL;
+ Job *j = userdata;
+ int r, i, n;
- if (streq(dbus_message_get_path(message), "/org/freedesktop/systemd1/job")) {
- /* Be nice to gdbus and return introspection data for our mid-level paths */
+ if (strstr(sd_bus_message_get_member(message), "After"))
+ n = job_get_after(j, &list);
+ else
+ n = job_get_before(j, &list);
+ if (n < 0)
+ return n;
- if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
- char *introspection = NULL;
- FILE *f;
- Iterator i;
- size_t size;
+ r = sd_bus_message_new_method_return(message, &reply);
+ if (r < 0)
+ return r;
- if (!(reply = dbus_message_new_method_return(message)))
- goto oom;
+ r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
+ if (r < 0)
+ return r;
- /* We roll our own introspection code here, instead of
- * relying on bus_default_message_handler() because we
- * need to generate our introspection string
- * dynamically. */
+ for (i = 0; i < n; i ++) {
+ _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
- if (!(f = open_memstream(&introspection, &size)))
- goto oom;
+ job_path = job_dbus_path(list[i]);
+ if (!job_path)
+ return -ENOMEM;
- fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
- "<node>\n", f);
+ unit_path = unit_dbus_path(list[i]->unit);
+ if (!unit_path)
+ return -ENOMEM;
- fputs(BUS_INTROSPECTABLE_INTERFACE, f);
- fputs(BUS_PEER_INTERFACE, f);
+ r = sd_bus_message_append(reply, "(usssoo)",
+ list[i]->id,
+ list[i]->unit->id,
+ job_type_to_string(list[i]->type),
+ job_state_to_string(list[i]->state),
+ job_path,
+ unit_path);
+ if (r < 0)
+ return r;
+ }
- HASHMAP_FOREACH(j, m->jobs, i)
- fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
- fputs("</node>\n", f);
+ return sd_bus_send(NULL, reply, NULL);
+}
- if (ferror(f)) {
- fclose(f);
- free(introspection);
- goto oom;
- }
+const sd_bus_vtable bus_job_vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_METHOD("Cancel", NULL, NULL, bus_job_method_cancel, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("GetAfter", NULL, "a(usssoo)", bus_job_method_get_waiting_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("GetBefore", NULL, "a(usssoo)", bus_job_method_get_waiting_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_PROPERTY("Id", "u", NULL, offsetof(Job, id), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Unit", "(so)", property_get_unit, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("JobType", "s", property_get_type, offsetof(Job, type), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("State", "s", property_get_state, offsetof(Job, state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_VTABLE_END
+};
- fclose(f);
+static int send_new_signal(sd_bus *bus, void *userdata) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ _cleanup_free_ char *p = NULL;
+ Job *j = userdata;
+ int r;
- if (!introspection)
- goto oom;
+ assert(bus);
+ assert(j);
- if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
- free(introspection);
- goto oom;
- }
+ p = job_dbus_path(j);
+ if (!p)
+ return -ENOMEM;
- free(introspection);
+ r = sd_bus_message_new_signal(
+ bus,
+ &m,
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "JobNew");
+ if (r < 0)
+ return r;
- if (!dbus_connection_send(connection, reply, NULL))
- goto oom;
+ r = sd_bus_message_append(m, "uos", j->id, p, j->unit->id);
+ if (r < 0)
+ return r;
- dbus_message_unref(reply);
+ return sd_bus_send(bus, m, NULL);
+}
- return DBUS_HANDLER_RESULT_HANDLED;
- }
+static int send_changed_signal(sd_bus *bus, void *userdata) {
+ _cleanup_free_ char *p = NULL;
+ Job *j = userdata;
- return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
- }
+ assert(bus);
+ assert(j);
- if ((r = manager_get_job_from_dbus_path(m, dbus_message_get_path(message), &j)) < 0) {
+ p = job_dbus_path(j);
+ if (!p)
+ return -ENOMEM;
- if (r == -ENOMEM)
- return DBUS_HANDLER_RESULT_NEED_MEMORY;
+ return sd_bus_emit_properties_changed(bus, p, "org.freedesktop.systemd1.Job", "State", NULL);
+}
- if (r == -ENOENT) {
- DBusError e;
+void bus_job_send_change_signal(Job *j) {
+ int r;
- dbus_error_init(&e);
- dbus_set_error_const(&e, DBUS_ERROR_UNKNOWN_OBJECT, "Unknown job");
- return bus_send_error_reply(connection, message, &e, r);
- }
+ assert(j);
- return bus_send_error_reply(connection, message, NULL, r);
+ if (j->in_dbus_queue) {
+ LIST_REMOVE(dbus_queue, j->manager->dbus_job_queue, j);
+ j->in_dbus_queue = false;
}
- return bus_job_message_dispatch(j, connection, message);
-
-oom:
- if (reply)
- dbus_message_unref(reply);
+ r = bus_foreach_bus(j->manager, j->bus_track, j->sent_dbus_new_signal ? send_changed_signal : send_new_signal, j);
+ if (r < 0)
+ log_debug_errno(r, "Failed to send job change signal for %u: %m", j->id);
- return DBUS_HANDLER_RESULT_NEED_MEMORY;
+ j->sent_dbus_new_signal = true;
}
-const DBusObjectPathVTable bus_job_vtable = {
- .message_function = bus_job_message_handler
-};
-
-static int job_send_message(Job *j, DBusMessage *m) {
+static int send_removed_signal(sd_bus *bus, void *userdata) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ _cleanup_free_ char *p = NULL;
+ Job *j = userdata;
int r;
+ assert(bus);
assert(j);
- assert(m);
-
- if (bus_has_subscriber(j->manager)) {
- if ((r = bus_broadcast(j->manager, m)) < 0)
- return r;
- } else if (j->bus_client) {
- /* If nobody is subscribed, we just send the message
- * to the client which created the job */
+ p = job_dbus_path(j);
+ if (!p)
+ return -ENOMEM;
- assert(j->bus);
+ r = sd_bus_message_new_signal(
+ bus,
+ &m,
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "JobRemoved");
+ if (r < 0)
+ return r;
- if (!dbus_message_set_destination(m, j->bus_client))
- return -ENOMEM;
+ r = sd_bus_message_append(m, "uoss", j->id, p, j->unit->id, job_result_to_string(j->result));
+ if (r < 0)
+ return r;
- if (!dbus_connection_send(j->bus, m, NULL))
- return -ENOMEM;
- }
-
- return 0;
+ return sd_bus_send(bus, m, NULL);
}
-void bus_job_send_change_signal(Job *j) {
- char *p = NULL;
- DBusMessage *m = NULL;
+void bus_job_send_removed_signal(Job *j) {
+ int r;
assert(j);
- if (j->in_dbus_queue) {
- LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j);
- j->in_dbus_queue = false;
- }
-
- if (!bus_has_subscriber(j->manager) && !j->bus_client) {
- j->sent_dbus_new_signal = true;
- return;
- }
-
- if (!(p = job_dbus_path(j)))
- goto oom;
-
- if (j->sent_dbus_new_signal) {
- /* Send a properties changed signal */
-
- if (!(m = bus_properties_changed_new(p, "org.freedesktop.systemd1.Job", INVALIDATING_PROPERTIES)))
- goto oom;
-
- } else {
- /* Send a new signal */
+ if (!j->sent_dbus_new_signal)
+ bus_job_send_change_signal(j);
- if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobNew")))
- goto oom;
+ r = bus_foreach_bus(j->manager, j->bus_track, send_removed_signal, j);
+ if (r < 0)
+ log_debug_errno(r, "Failed to send job remove signal for %u: %m", j->id);
+}
- if (!dbus_message_append_args(m,
- DBUS_TYPE_UINT32, &j->id,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_INVALID))
- goto oom;
- }
+static int bus_job_track_handler(sd_bus_track *t, void *userdata) {
+ Job *j = userdata;
- if (job_send_message(j, m) < 0)
- goto oom;
+ assert(t);
+ assert(j);
- free(p);
- dbus_message_unref(m);
+ j->bus_track = sd_bus_track_unref(j->bus_track); /* make sure we aren't called again */
- j->sent_dbus_new_signal = true;
+ /* Last client dropped off the bus, maybe we should GC this now? */
+ job_add_to_gc_queue(j);
+ return 0;
+}
- return;
+static int bus_job_allocate_bus_track(Job *j) {
-oom:
- free(p);
+ assert(j);
- if (m)
- dbus_message_unref(m);
+ if (j->bus_track)
+ return 0;
- log_error("Failed to allocate job change signal.");
+ return sd_bus_track_new(j->unit->manager->api_bus, &j->bus_track, bus_job_track_handler, j);
}
-void bus_job_send_removed_signal(Job *j) {
- char *p = NULL;
- DBusMessage *m = NULL;
- const char *r;
+int bus_job_coldplug_bus_track(Job *j) {
+ int r = 0;
+ _cleanup_strv_free_ char **deserialized_clients = NULL;
assert(j);
- if (!bus_has_subscriber(j->manager) && !j->bus_client)
- return;
-
- if (!j->sent_dbus_new_signal)
- bus_job_send_change_signal(j);
-
- if (!(p = job_dbus_path(j)))
- goto oom;
+ deserialized_clients = TAKE_PTR(j->deserialized_clients);
- if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobRemoved")))
- goto oom;
+ if (strv_isempty(deserialized_clients))
+ return 0;
- r = job_result_to_string(j->result);
+ if (!j->manager->api_bus)
+ return 0;
- if (!dbus_message_append_args(m,
- DBUS_TYPE_UINT32, &j->id,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_STRING, &r,
- DBUS_TYPE_INVALID))
- goto oom;
+ r = bus_job_allocate_bus_track(j);
+ if (r < 0)
+ return r;
- if (job_send_message(j, m) < 0)
- goto oom;
+ return bus_track_add_name_many(j->bus_track, deserialized_clients);
+}
- free(p);
- dbus_message_unref(m);
+int bus_job_track_sender(Job *j, sd_bus_message *m) {
+ int r;
- return;
+ assert(j);
+ assert(m);
-oom:
- free(p);
+ if (sd_bus_message_get_bus(m) != j->unit->manager->api_bus) {
+ j->ref_by_private_bus = true;
+ return 0;
+ }
- if (m)
- dbus_message_unref(m);
+ r = bus_job_allocate_bus_track(j);
+ if (r < 0)
+ return r;
- log_error("Failed to allocate job remove signal.");
+ return sd_bus_track_add_sender(j->bus_track, m);
}
projects / thirdparty / systemd.git / blobdiff