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 <sys/param.h>
  21 #include <string.h>
  22
  23 #include <glib/gprintf.h>
  24 #include <glib-unix.h>
  25
  26 #include "hostnamed-gen.h"
  27
  28 GPtrArray *hostnamed_freeable;
  29 Hostname1 *hostnamed_interf;
  30
  31 /* --- begin method/property/signal code --- */
  32
  33 static gboolean
  34 on_handle_set_hostname(Hostname1 *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(Hostname1 *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(Hostname1 *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(Hostname1 *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(Hostname1 *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         gchar *hostname_buf, *ret;
  83         size_t hostname_divider;
  84
  85         hostname_buf = (gchar*) g_malloc0(MAXHOSTNAMELEN);
  86         ret          = (gchar*) g_malloc0(MAXHOSTNAMELEN);
  87         g_ptr_array_add(hostnamed_freeable, hostname_buf);
  88         g_ptr_array_add(hostnamed_freeable, ret);
  89
  90         if(gethostname(hostname_buf, MAXHOSTNAMELEN))
  91                 return "";
  92
  93         hostname_divider = strcspn(hostname_buf, ".");
  94
  95         return strncpy(ret, hostname_buf, hostname_divider);
  96 }
  97
  98 const gchar *
  99 our_get_static_hostname() {
 100
 101     return "TODO";
 102 }
 103
 104 const gchar *
 105 our_get_pretty_hostname() {
 106
 107     return "TODO";
 108 }
 109
 110 const gchar *
 111 our_get_chassis() {
 112
 113     return "TODO";
 114 }
 115
 116 const gchar *
 117 our_get_icon_name() {
 118
 119     return "TODO";
 120 }
 121
 122 const gchar *
 123 our_get_kernel_name() {
 124
 125     return "TODO";
 126 }
 127
 128 const gchar *
 129 our_get_kernel_version() {
 130
 131     return "TODO";
 132 }
 133
 134 const gchar *
 135 our_get_kernel_release() {
 136
 137     return "TODO";
 138 }
 139
 140 const gchar *
 141 our_get_os_cpename() {
 142
 143     return "TODO";
 144 }
 145
 146 const gchar *
 147 our_get_os_pretty_name() {
 148
 149     return "TODO";
 150 }
 151
 152 /* --- end method/property/signal code, begin bus/name handlers --- */
 153
 154 static void hostnamed_on_bus_acquired(GDBusConnection *conn,
 155                             const gchar *name,
 156                             gpointer user_data) {
 157
 158     g_print("got bus, name: %s\n", name);
 159
 160 }
 161
 162 static void hostnamed_on_name_acquired(GDBusConnection *conn,
 163                                            const gchar *name,
 164                                        gpointer user_data) {
 165
 166     g_print("got '%s' on system bus\n", name);
 167
 168     hostnamed_interf = hostname1_skeleton_new();
 169
 170     /* attach function pointers to generated struct's method handlers */
 171     g_signal_connect(hostnamed_interf, "handle-set-hostname", G_CALLBACK(on_handle_set_hostname), NULL);
 172     g_signal_connect(hostnamed_interf, "handle-set-static-hostname", G_CALLBACK(on_handle_set_static_hostname), NULL);
 173     g_signal_connect(hostnamed_interf, "handle-set-pretty-hostname", G_CALLBACK(on_handle_set_pretty_hostname), NULL);
 174     g_signal_connect(hostnamed_interf, "handle-set-chassis", G_CALLBACK(on_handle_set_chassis), NULL);
 175     g_signal_connect(hostnamed_interf, "handle-set-icon-name", G_CALLBACK(on_handle_set_icon_name), NULL);
 176
 177     /* set our properties before export */
 178     hostname1_set_hostname(hostnamed_interf, our_get_hostname());
 179     hostname1_set_static_hostname(hostnamed_interf, our_get_static_hostname());
 180     hostname1_set_pretty_hostname(hostnamed_interf, our_get_pretty_hostname());
 181     hostname1_set_chassis(hostnamed_interf, our_get_chassis());
 182     hostname1_set_icon_name(hostnamed_interf, our_get_icon_name());
 183     hostname1_set_kernel_name(hostnamed_interf, our_get_kernel_name());
 184     hostname1_set_kernel_version(hostnamed_interf, our_get_kernel_version());
 185     hostname1_set_kernel_release(hostnamed_interf, our_get_kernel_release());
 186     hostname1_set_operating_system_cpename(hostnamed_interf, our_get_os_cpename());
 187     hostname1_set_operating_system_pretty_name(hostnamed_interf, our_get_os_pretty_name());
 188
 189     if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(hostnamed_interf),
 190                                          conn,
 191                                          "/org/freedesktop/hostname1",
 192                                          NULL)) {
 193
 194         g_printf("Failed to export Hostname1's interface!");
 195     }
 196
 197 }
 198
 199 /* --- end bus/name handlers, begin misc functions --- */
 200
 201 /* free()'s */
 202 void hostnamed_mem_clean() {
 203
 204     g_ptr_array_foreach(hostnamed_freeable, (GFunc) g_free, NULL);
 205         g_ptr_array_free(hostnamed_freeable, TRUE);
 206 }
 207
 208 static void hostnamed_on_name_lost(GDBusConnection *conn,
 209                                    const gchar *name,
 210                                    gpointer user_data) {
 211
 212     g_print("lost name %s, exiting...", name);
 213
 214     hostnamed_mem_clean();
 215     g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(hostnamed_interf));
 216
 217 }
 218
 219 int main() {
 220
 221         guint bus_descriptor;
 222         GMainLoop *hostnamed_loop;
 223
 224         hostnamed_loop = g_main_loop_new(NULL, TRUE);
 225         hostnamed_freeable = g_ptr_array_new();
 226
 227          bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
 228                                     "org.freedesktop.hostname1",
 229                                     G_BUS_NAME_OWNER_FLAGS_NONE,
 230                                     hostnamed_on_bus_acquired,
 231                                     hostnamed_on_name_acquired,
 232                                     hostnamed_on_name_lost,
 233                                     NULL,
 234                                     NULL);
 235
 236         g_main_loop_run(hostnamed_loop);
 237         g_main_loop_unref(hostnamed_loop);
 238
 239         g_bus_unown_name(bus_descriptor);
 240
 241         hostnamed_mem_clean();
 242
 243         return 0;
 244 }
 245
 246 /* TODO figure out DMI variables on obsd */
 247 /*static gchar *guess_icon_name() {
 248
 249     gchar *filebuf = NULL;
 250     gchar *ret = NULL;
 251
 252     #if defined(__i386__) || defined(__x86_64__)
 253
 254        Taken with a few minor changes from systemd's hostnamed.c,
 255        copyright 2011 Lennart Poettering.
 256
 257        See the SMBIOS Specification 2.7.1 section 7.4.1 for
 258        details about the values listed here:
 259
 260        http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_2.7.1.pdf
 261
 262
 263     if (g_file_get_contents ("/sys/class/dmi/id/chassis_type", &filebuf, NULL, NULL)) {
 264         switch (g_ascii_strtoull (filebuf, NULL, 10)) {
 265         case 0x3:
 266         case 0x4:
 267         case 0x5:
 268         case 0x6:
 269         case 0x7:
 270             ret = g_strdup ("computer-desktop");
 271             goto out;
 272         case 0x9:
 273         case 0xA:
 274         case 0xE:
 275             ret = g_strdup ("computer-laptop");
 276             goto out;
 277         case 0x11:
 278         case 0x17:
 279         case 0x1C:
 280         case 0x1D:
 281             ret = g_strdup ("computer-server");
 282             goto out;
 283         }
 284     }
 285     #endif
 286     ret = g_strdup ("computer");
 287   out:
 288     g_free (filebuf);
 289     return ret;
 290 }*/
 291