src/interfaces/hostnamed/hostnamed.c

   1 /*
   2  * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <unistd.h>
  18 #include <limits.h>
  19
  20 #include <glib.h>
  21 #include <gio/gio.h>
  22
  23 #include "hostnamed.h"
  24 #include "hostnamed-gen.c"
  25
  26 GPtrArray *hostnamed_freeable;
  27 GDBusNodeInfo *spect_data;
  28 hostnamedHostname1 *hostnamed_interf;
  29
  30 /* begin method/property/signal code */
  31
  32 /* TODO make sure these guys only work if called by root */
  33 static gboolean
  34 on_handle_set_hostname(hostnamedHostname1 *hn1_passed_interf,
  35                        GDBusMethodInvocation *invoc,
  36                        const gchar *greet,
  37                        gpointer data) {
  38     return FALSE;
  39 }
  40
  41 static gboolean
  42 on_handle_set_static_hostname(hostnamedHostname1 *hn1_passed_interf,
  43                               GDBusMethodInvocation *invoc,
  44                               const gchar *greet,
  45                               gpointer data) {
  46     return FALSE;
  47 }
  48
  49 static gboolean
  50 on_handle_set_pretty_hostname(hostnamedHostname1 *hn1_passed_interf,
  51                               GDBusMethodInvocation *invoc,
  52                               const gchar *greet,
  53                               gpointer data) {
  54     return FALSE;
  55 }
  56
  57 static gboolean
  58 on_handle_set_chassis(hostnamedHostname1 *hn1_passed_interf,
  59                       GDBusMethodInvocation *invoc,
  60                       const gchar *greet,
  61                       gpointer data) {
  62     return FALSE;
  63 }
  64
  65 static gboolean
  66 on_handle_set_icon_name(hostnamedHostname1 *hn1_passed_interf,
  67                         GDBusMethodInvocation *invoc,
  68                         const gchar *greet,
  69                         gpointer data) {
  70     return FALSE;
  71 }
  72
  73 /* note: all hostnamed/hostname1's properties are read-only,
  74  * and do not need set_ functions, gdbus-codegen realized
  75  * this from the XML and handled the to-be error of trying
  76  * to set a read-only property's value
  77  */
  78
  79 const gchar *
  80 our_get_hostname() {
  81
  82     return "TODO";
  83 }
  84
  85 const gchar *
  86 our_get_static_hostname() {
  87
  88     return "TODO";
  89 }
  90
  91 const gchar *
  92 our_get_pretty_hostname() {
  93
  94     return "TODO";
  95 }
  96
  97 const gchar *
  98 our_get_chassis() {
  99
 100     return "TODO";
 101 }
 102
 103 const gchar *
 104 our_get_icon_name() {
 105
 106     return "TODO";
 107 }
 108
 109 const gchar *
 110 our_get_kernel_name() {
 111
 112     return "TODO";
 113 }
 114
 115 const gchar *
 116 our_get_kernel_version() {
 117
 118     return "TODO";
 119 }
 120
 121 const gchar *
 122 our_get_kernel_release() {
 123
 124     return "TODO";
 125 }
 126
 127 const gchar *
 128 our_get_os_cpename() {
 129
 130     return "TODO";
 131 }
 132
 133 const gchar *
 134 our_get_os_pretty_name() {
 135
 136     return "TODO";
 137 }
 138
 139 /* end method/property/signal code, begin bus/name handlers */
 140
 141 static void hostnamed_on_bus_acquired(GDBusConnection *conn,
 142                             const gchar *name,
 143                             gpointer user_data) {
 144
 145     g_print("got bus, name: %s\n", name);
 146
 147 }
 148
 149 static void hostnamed_on_name_acquired(GDBusConnection *conn,
 150                              const gchar *name,
 151                              gpointer user_data) {
 152
 153     g_print("got '%s' on system bus\n", name);
 154
 155     hostnamed_interf = hostnamed_hostname1_skeleton_new();
 156
 157     /* attach function pointers to generated struct's method handlers */
 158     g_signal_connect(hostnamed_interf, "handle-set-hostname", G_CALLBACK(on_handle_set_hostname), NULL);
 159     g_signal_connect(hostnamed_interf, "handle-set-static-hostname", G_CALLBACK(on_handle_set_static_hostname), NULL);
 160     g_signal_connect(hostnamed_interf, "handle-set-pretty-hostname", G_CALLBACK(on_handle_set_pretty_hostname), NULL);
 161     g_signal_connect(hostnamed_interf, "handle-set-chassis", G_CALLBACK(on_handle_set_chassis), NULL);
 162     g_signal_connect(hostnamed_interf, "handle-set-icon-name", G_CALLBACK(on_handle_set_icon_name), NULL);
 163
 164     /* set our properties before export */
 165     hostnamed_hostname1_set_hostname(hostnamed_interf, our_get_hostname());
 166     hostnamed_hostname1_set_static_hostname(hostnamed_interf, our_get_static_hostname());
 167     hostnamed_hostname1_set_pretty_hostname(hostnamed_interf, our_get_pretty_hostname());
 168     hostnamed_hostname1_set_chassis(hostnamed_interf, our_get_chassis());
 169     hostnamed_hostname1_set_icon_name(hostnamed_interf, our_get_icon_name());
 170     hostnamed_hostname1_set_kernel_name(hostnamed_interf, our_get_kernel_name());
 171     hostnamed_hostname1_set_kernel_version(hostnamed_interf, our_get_kernel_version());
 172     hostnamed_hostname1_set_kernel_release(hostnamed_interf, our_get_kernel_release());
 173     hostnamed_hostname1_set_operating_system_cpename(hostnamed_interf, our_get_os_cpename());
 174     hostnamed_hostname1_set_operating_system_pretty_name(hostnamed_interf, our_get_os_pretty_name());
 175
 176     if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(hostnamed_interf),
 177                                                                    conn,
 178                                                                    "/org/freedesktop/hostname1",
 179                                                                    NULL)) {
 180
 181         g_printf("failed to export hostname1's interface on system bus!");
 182     }
 183
 184 }
 185
 186 static void hostnamed_on_name_lost(GDBusConnection *conn,
 187                          const gchar *name,
 188                          gpointer user_data) {
 189
 190     g_print("lost name %s, exiting...", name);
 191
 192     hostnamed_mem_clean();
 193     g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(hostnamed_interf));
 194
 195     /* TODO exit through g_main_loop properly... */
 196 }
 197
 198 /* safe call to try and start hostnamed */
 199 GError *hostnamed_init() {
 200
 201     guint bus_descriptor;
 202     GError *err = NULL;
 203     gchar **hostnamed_ispect_xml;
 204     gchar  *hostnamed_joined_xml;
 205
 206     hostnamed_freeable = g_ptr_array_new();
 207     hostnamed_ispect_xml = g_malloc(3000);
 208
 209     g_file_get_contents("conf/hostnamed-ispect.xml", hostnamed_ispect_xml, NULL, NULL);
 210     hostnamed_joined_xml = g_strjoinv("\n", hostnamed_ispect_xml);
 211     spect_data = g_dbus_node_info_new_for_xml(hostnamed_joined_xml, NULL);
 212
 213     g_free(hostnamed_ispect_xml);
 214     g_ptr_array_add(hostnamed_freeable, hostnamed_joined_xml);
 215
 216     bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
 217                                     "org.freedesktop.hostname1",
 218                                     G_BUS_NAME_OWNER_FLAGS_NONE,
 219                                     hostnamed_on_bus_acquired,
 220                                     hostnamed_on_name_acquired,
 221                                     hostnamed_on_name_lost,
 222                                     NULL,
 223                                     NULL);
 224
 225     /* TODO: malloc and return reference as if a main() closed */
 226     return err;
 227 }
 228
 229 /* free()'s */
 230 void hostnamed_mem_clean() {
 231
 232     g_ptr_array_foreach(hostnamed_freeable, (GFunc) g_free, NULL);
 233 }
 234
 235 /* TODO figure out DMI variables on obsd */
 236 /*static gchar *guess_icon_name() {
 237
 238     gchar *filebuf = NULL;
 239     gchar *ret = NULL;
 240
 241     #if defined(__i386__) || defined(__x86_64__)
 242
 243        Taken with a few minor changes from systemd's hostnamed.c,
 244        copyright 2011 Lennart Poettering.
 245
 246        See the SMBIOS Specification 2.7.1 section 7.4.1 for
 247        details about the values listed here:
 248
 249        http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_2.7.1.pdf
 250
 251
 252     if (g_file_get_contents ("/sys/class/dmi/id/chassis_type", &filebuf, NULL, NULL)) {
 253         switch (g_ascii_strtoull (filebuf, NULL, 10)) {
 254         case 0x3:
 255         case 0x4:
 256         case 0x5:
 257         case 0x6:
 258         case 0x7:
 259             ret = g_strdup ("computer-desktop");
 260             goto out;
 261         case 0x9:
 262         case 0xA:
 263         case 0xE:
 264             ret = g_strdup ("computer-laptop");
 265             goto out;
 266         case 0x11:
 267         case 0x17:
 268         case 0x1C:
 269         case 0x1D:
 270             ret = g_strdup ("computer-server");
 271             goto out;
 272         }
 273     }
 274     #endif
 275     ret = g_strdup ("computer");
 276   out:
 277     g_free (filebuf);
 278     return ret;
 279 }*/