/*-*- Mode: C; c-basic-offset: 8 -*-*/ /*** 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 "dbus.h" #include "log.h" #include "dbus-job.h" #define BUS_JOB_INTERFACE \ " <interface name=\"org.freedesktop.systemd1.Job\">\n" \ " <method name=\"Cancel\"/>\n" \ " <signal name=\"Changed\"/>\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_INTROSPECTABLE_INTERFACE \ "</node>\n" const char bus_job_interface[] = BUS_JOB_INTERFACE; 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(Manager *m, DBusMessageIter *i, const char *property, void *data) { Job *j = data; DBusMessageIter sub; char *p; assert(m); assert(i); assert(property); assert(j); if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub)) return -ENOMEM; if (!(p = unit_dbus_path(j->unit))) return -ENOMEM; if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &j->unit->meta.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; } static DBusHandlerResult bus_job_message_dispatch(Job *j, DBusMessage *message) { const BusProperty properties[] = { { "org.freedesktop.systemd1.Job", "Id", bus_property_append_uint32, "u", &j->id }, { "org.freedesktop.systemd1.Job", "State", bus_job_append_state, "s", &j->state }, { "org.freedesktop.systemd1.Job", "JobType", bus_job_append_type, "s", &j->type }, { "org.freedesktop.systemd1.Job", "Unit", bus_job_append_unit, "(so)", j }, { NULL, NULL, NULL, NULL, NULL } }; DBusMessage *reply = NULL; Manager *m = j->manager; if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Job", "Cancel")) { if (!(reply = dbus_message_new_method_return(message))) goto oom; job_free(j); } else return bus_default_message_handler(j->manager, message, INTROSPECTION, properties); if (reply) { if (!dbus_connection_send(m->api_bus, reply, NULL)) goto oom; dbus_message_unref(reply); } return DBUS_HANDLER_RESULT_HANDLED; oom: if (reply) dbus_message_unref(reply); return DBUS_HANDLER_RESULT_NEED_MEMORY; } static DBusHandlerResult bus_job_message_handler(DBusConnection *connection, DBusMessage *message, void *data) { Manager *m = data; Job *j; int r; assert(connection); assert(message); assert(m); log_debug("Got D-Bus request: %s.%s() on %s", dbus_message_get_interface(message), dbus_message_get_member(message), dbus_message_get_path(message)); if ((r = manager_get_job_from_dbus_path(m, dbus_message_get_path(message), &j)) < 0) { if (r == -ENOMEM) return DBUS_HANDLER_RESULT_NEED_MEMORY; if (r == -ENOENT) return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; return bus_send_error_reply(m, message, NULL, r); } return bus_job_message_dispatch(j, message); } const DBusObjectPathVTable bus_job_vtable = { .message_function = bus_job_message_handler }; void bus_job_send_change_signal(Job *j) { char *p = NULL; DBusMessage *m = NULL; assert(j); assert(j->in_dbus_queue); LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j); j->in_dbus_queue = false; if (set_isempty(j->manager->subscribed)) { j->sent_dbus_new_signal = true; return; } if (!(p = job_dbus_path(j))) goto oom; if (j->sent_dbus_new_signal) { /* Send a change signal */ if (!(m = dbus_message_new_signal(p, "org.freedesktop.systemd1.Job", "Changed"))) goto oom; } else { /* Send a new signal */ if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobNew"))) goto oom; if (!dbus_message_append_args(m, DBUS_TYPE_UINT32, &j->id, DBUS_TYPE_OBJECT_PATH, &p, DBUS_TYPE_INVALID)) goto oom; } if (!dbus_connection_send(j->manager->api_bus, m, NULL)) goto oom; free(p); dbus_message_unref(m); j->sent_dbus_new_signal = true; return; oom: free(p); if (m) dbus_message_unref(m); log_error("Failed to allocate job change signal."); } void bus_job_send_removed_signal(Job *j, bool success) { char *p = NULL; DBusMessage *m = NULL; dbus_bool_t b = success; assert(j); if (set_isempty(j->manager->subscribed)) return; if (!j->sent_dbus_new_signal) bus_job_send_change_signal(j); if (!(p = job_dbus_path(j))) goto oom; if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobRemoved"))) goto oom; if (!dbus_message_append_args(m, DBUS_TYPE_UINT32, &j->id, DBUS_TYPE_OBJECT_PATH, &p, DBUS_TYPE_BOOLEAN, &b, DBUS_TYPE_INVALID)) goto oom; if (!dbus_connection_send(j->manager->api_bus, m, NULL)) goto oom; free(p); dbus_message_unref(m); return; oom: free(p); if (m) dbus_message_unref(m); log_error("Failed to allocate job remove signal."); }