X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=dbus-job.c;h=e0c1153fc7260d74b7cfc8048a895555f10fbf11;hp=0ac11bc1fbef0036ae2bfc7248862f8df00e1cd3;hb=a9f5d45466c923442ceb31ab2a4206736133d9d4;hpb=ea4309869e75497ba6a97c540646cb66a157a4d9

diff --git a/dbus-job.c b/dbus-job.c
index 0ac11bc1f..e0c1153fc 100644
--- a/dbus-job.c
+++ b/dbus-job.c
@@ -1,5 +1,26 @@
 /*-*- 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"
 
@@ -7,13 +28,125 @@ static const char introspection[] =
         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
         "<node>"
         " <interface name=\"org.freedesktop.systemd1.Job\">"
+        "  <method name=\"Cancel\"/>"
+        "  <signal name=\"Changed\"/>"
+        "  <property name=\"Id\" type=\"u\" access=\"read\"/>"
+        "  <property name=\"Unit\" type=\"(so)\" access=\"read\"/>"
+        "  <property name=\"JobType\" type=\"s\" access=\"read\"/>"
+        "  <property name=\"State\" type=\"s\" access=\"read\"/>"
         " </interface>"
         BUS_PROPERTIES_INTERFACE
         BUS_INTROSPECTABLE_INTERFACE
         "</node>";
 
-DBusHandlerResult bus_job_message_handler(DBusConnection  *connection, DBusMessage  *message, void *data) {
+static int bus_job_append_state(Manager *m, DBusMessageIter *i, const char *property, void *data) {
+        Job *j = data;
+        const char *state;
+
+        assert(m);
+        assert(i);
+        assert(property);
+        assert(j);
+
+        state = job_state_to_string(j->state);
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_job_append_type(Manager *m, DBusMessageIter *i, const char *property, void *data) {
+        Job *j = data;
+        const char *type;
+
+        assert(m);
+        assert(i);
+        assert(property);
+        assert(j);
+
+        type = job_type_to_string(j->type);
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &type))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_job_append_unit(Manager *m, DBusMessageIter *i, const char *property, void *data) {
+        Job *j = data;
+        DBusMessageIter sub;
+        char *p;
+        const char *id;
+
+        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;
+
+        id = unit_id(j->unit);
+
+        if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &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      },
+                { "org.freedesktop.systemd1.Job", "JobType", bus_job_append_type,        "s",    j      },
+                { "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->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);
@@ -24,9 +157,111 @@ DBusHandlerResult bus_job_message_handler(DBusConnection  *connection, DBusMessa
                   dbus_message_get_member(message),
                   dbus_message_get_path(message));
 
-        return bus_default_message_handler(m, message, introspection, NULL);
+        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))
+                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", "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->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) {
+        char *p = NULL;
+        DBusMessage *m = NULL;
+
+        assert(j);
+
+        if (set_isempty(j->manager->subscribed) || !j->sent_dbus_new_signal)
+                return;
+
+        if (!(p = job_dbus_path(j)))
+                goto oom;
+
+        if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1", "JobRemoved")))
+                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->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.");
+}