src/networkd/zone-bus.c

   1 /*#############################################################################
   2 #                                                                             #
   3 # IPFire.org - A linux based firewall                                         #
   4 # Copyright (C) 2023 IPFire Network Development Team                          #
   5 #                                                                             #
   6 # This program is free software: you can redistribute it and/or modify        #
   7 # it under the terms of the GNU General Public License as published by        #
   8 # the Free Software Foundation, either version 3 of the License, or           #
   9 # (at your option) any later version.                                         #
  10 #                                                                             #
  11 # This program is distributed in the hope that it will be useful,             #
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  14 # GNU General Public License for more details.                                #
  15 #                                                                             #
  16 # You should have received a copy of the GNU General Public License           #
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  18 #                                                                             #
  19 #############################################################################*/
  20
  21 #include <errno.h>
  22
  23 #include "bus.h"
  24 #include "daemon.h"
  25 #include "logging.h"
  26 #include "zone.h"
  27 #include "zone-bus.h"
  28 #include "zones.h"
  29
  30 static int nw_zone_node_enumerator(sd_bus* bus, const char* path, void* data,
  31                 char*** nodes, sd_bus_error* error) {
  32         int r;
  33
  34         DEBUG("Enumerating zones...\n");
  35
  36         // Fetch a reference to the daemon
  37         nw_daemon* daemon = (nw_daemon*)data;
  38
  39         // Fetch zones
  40         nw_zones* zones = nw_daemon_zones(daemon);
  41
  42         // Make bus paths for all zones
  43         r = nw_zones_bus_paths(zones, nodes);
  44         if (r)
  45                 goto ERROR;
  46
  47 ERROR:
  48         nw_zones_unref(zones);
  49
  50         return r;
  51 }
  52
  53 static int nw_zone_object_find(sd_bus* bus, const char* path, const char* interface,
  54                 void* data, void** found, sd_bus_error* error) {
  55         char* name = NULL;
  56         int r;
  57
  58         // Fetch a reference to the daemon
  59         nw_daemon* daemon = (nw_daemon*)data;
  60
  61         // Decode the path of the requested object
  62         r = sd_bus_path_decode(path, "/org/ipfire/network1/zone", &name);
  63         if (r <= 0)
  64                 return 0;
  65
  66         // Find the zone
  67         nw_zone* zone = nw_daemon_get_zone_by_name(daemon, name);
  68         if (!zone)
  69                 return 0;
  70
  71         // Match!
  72         *found = zone;
  73
  74         nw_zone_unref(zone);
  75
  76         return 1;
  77 }
  78
  79 /*
  80         MTU
  81 */
  82 static int nw_zone_bus_get_mtu(sd_bus* bus, const char *path, const char *interface,
  83                 const char* property, sd_bus_message* reply, void* data, sd_bus_error *error) {
  84         nw_zone* zone = (nw_zone*)data;
  85
  86         return sd_bus_message_append(reply, "u", nw_zone_mtu(zone));
  87 }
  88
  89 static int nw_zone_bus_set_mtu(sd_bus* bus, const char* path, const char* interface,
  90                 const char* property, sd_bus_message* value, void* data, sd_bus_error* error) {
  91         unsigned int mtu = 0;
  92         int r;
  93
  94         nw_zone* zone = (nw_zone*)data;
  95
  96         // Parse the value
  97         r = sd_bus_message_read(value, "u", &mtu);
  98         if (r < 0)
  99                 return r;
 100
 101         if (!nw_zone_set_mtu(zone, mtu))
 102                 return -errno;
 103
 104         return 0;
 105 }
 106
 107 static const sd_bus_vtable zone_vtable[] = {
 108         SD_BUS_VTABLE_START(0),
 109
 110         // MTU
 111         SD_BUS_WRITABLE_PROPERTY("MTU", "u", nw_zone_bus_get_mtu, nw_zone_bus_set_mtu,
 112                 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 113
 114         SD_BUS_VTABLE_END
 115 };
 116
 117 const nw_bus_implementation zone_bus_impl = {
 118         "/org/ipfire/network1/zone",
 119         "org.ipfire.network1.Zone",
 120         .fallback_vtables = BUS_FALLBACK_VTABLES({zone_vtable, nw_zone_object_find}),
 121         .node_enumerator = nw_zone_node_enumerator,
 122 };