src/dbus-path.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <errno.h>
  23
  24 #include "dbus-unit.h"
  25 #include "dbus-path.h"
  26 #include "dbus-execute.h"
  27
  28 #define BUS_PATH_INTERFACE                                              \
  29         " <interface name=\"org.freedesktop.systemd1.Path\">\n"         \
  30         "  <property name=\"Unit\" type=\"s\" access=\"read\"/>\n"      \
  31         "  <property name=\"Paths\" type=\"a(ss)\" access=\"read\"/>\n" \
  32         " </interface>\n"
  33
  34 #define INTROSPECTION                                                   \
  35         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  36         "<node>\n"                                                      \
  37         BUS_UNIT_INTERFACE                                              \
  38         BUS_PATH_INTERFACE                                              \
  39         BUS_PROPERTIES_INTERFACE                                        \
  40         BUS_PEER_INTERFACE                                              \
  41         BUS_INTROSPECTABLE_INTERFACE                                    \
  42         "</node>\n"
  43
  44 const char bus_path_interface[] = BUS_PATH_INTERFACE;
  45
  46 static int bus_path_append_paths(Manager *m, DBusMessageIter *i, const char *property, void *data) {
  47         Path *p = data;
  48         DBusMessageIter sub, sub2;
  49         PathSpec *k;
  50
  51         assert(m);
  52         assert(i);
  53         assert(property);
  54         assert(p);
  55
  56         if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(ss)", &sub))
  57                 return -ENOMEM;
  58
  59         LIST_FOREACH(spec, k, p->specs) {
  60                 const char *t = path_type_to_string(k->type);
  61
  62                 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
  63                     !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &t) ||
  64                     !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &k->path) ||
  65                     !dbus_message_iter_close_container(&sub, &sub2))
  66                         return -ENOMEM;
  67         }
  68
  69         if (!dbus_message_iter_close_container(i, &sub))
  70                 return -ENOMEM;
  71
  72         return 0;
  73 }
  74
  75 DBusHandlerResult bus_path_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
  76         const BusProperty properties[] = {
  77                 BUS_UNIT_PROPERTIES,
  78                 { "org.freedesktop.systemd1.Path", "Unit",  bus_property_append_string, "s",     u->path.unit->meta.id  },
  79                 { "org.freedesktop.systemd1.Path", "Paths", bus_path_append_paths,      "a(ss)", u                      },
  80                 { NULL, NULL, NULL, NULL, NULL }
  81         };
  82
  83         return bus_default_message_handler(u->meta.manager, c, message, INTROSPECTION, properties);
  84 }