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
  22 #include "hostnamed-gen.h"
  23
  24 GPtrArray *hostnamed_freeable;
  25 GDBusNodeInfo *spect_data;
  26 hostnamedHostname1 *hostnamed_interf;
  27
  28 /* begin method/property/signal code */
  29
  30 /* TODO make sure these guys only work if called by root */
  31 static gboolean
  32 on_handle_set_hostname(hostnamedHostname1 *hn1_passed_interf,
  33                        GDBusMethodInvocation *invoc,
  34                        const gchar *greet,
  35                        gpointer data) {
  36     return FALSE;
  37 }
  38
  39 static gboolean
  40 on_handle_set_static_hostname(hostnamedHostname1 *hn1_passed_interf,
  41                               GDBusMethodInvocation *invoc,
  42                               const gchar *greet,
  43                               gpointer data) {
  44     return FALSE;
  45 }
  46
  47 static gboolean
  48 on_handle_set_pretty_hostname(hostnamedHostname1 *hn1_passed_interf,
  49                               GDBusMethodInvocation *invoc,
  50                               const gchar *greet,
  51                               gpointer data) {
  52     return FALSE;
  53 }
  54
  55 static gboolean
  56 on_handle_set_chassis(hostnamedHostname1 *hn1_passed_interf,
  57                       GDBusMethodInvocation *invoc,
  58                       const gchar *greet,
  59                       gpointer data) {
  60     return FALSE;
  61 }
  62
  63 static gboolean
  64 on_handle_set_icon_name(hostnamedHostname1 *hn1_passed_interf,
  65                         GDBusMethodInvocation *invoc,
  66                         const gchar *greet,
  67                         gpointer data) {
  68     return FALSE;
  69 }
  70
  71 /* note: all hostnamed/hostname1's properties are read-only,
  72  * and do not need set_ functions, gdbus-codegen realized
  73  * this from the XML and handled the to-be error of trying
  74  * to set a read-only property's value
  75  */
  76
  77 const gchar *
  78 our_get_hostname() {
  79
  80         int hostname_try;
  81         gchar *hostname_buf;
  82
  83         hostname_buf = (gchar*) g_malloc0(MAXHOSTNAMELEN);
  84         hostname_try = gethostname(hostname_buf, MAXHOSTNAMELEN);
  85
  86         return hostname_buf;
  87 }
  88
  89 const gchar *
  90 our_get_static_hostname() {
  91
  92     return "TODO";
  93 }
  94
  95 const gchar *
  96 our_get_pretty_hostname() {
  97
  98     return "TODO";
  99 }
 100
 101 const gchar *
 102 our_get_chassis() {
 103
 104     return "TODO";
 105 }
 106
 107 const gchar *
 108 our_get_icon_name() {
 109
 110     return "TODO";
 111 }
 112
 113 const gchar *
 114 our_get_kernel_name() {
 115
 116     return "TODO";
 117 }
 118
 119 const gchar *
 120 our_get_kernel_version() {
 121
 122     return "TODO";
 123 }
 124
 125 const gchar *
 126 our_get_kernel_release() {
 127
 128     return "TODO";
 129 }
 130
 131 const gchar *
 132 our_get_os_cpename() {
 133
 134     return "TODO";
 135 }
 136
 137 const gchar *
 138 our_get_os_pretty_name() {
 139
 140     return "TODO";
 141 }
 142
 143 /* end method/property/signal code, begin bus/name handlers */
 144
 145 static void hostnamed_on_bus_acquired(GDBusConnection *conn,
 146                             const gchar *name,
 147                             gpointer user_data) {
 148
 149     g_print("got bus, name: %s\n", name);
 150
 151 }
 152
 153 static void hostnamed_on_name_acquired(GDBusConnection *conn,
 154                              const gchar *name,
 155                              gpointer user_data) {
 156
 157     g_print("got '%s' on system bus\n", name);
 158
 159     hostnamed_interf = hostnamed_hostname1_skeleton_new();
 160
 161     /* attach function pointers to generated struct's method handlers */
 162     g_signal_connect(hostnamed_interf, "handle-set-hostname", G_CALLBACK(on_handle_set_hostname), NULL);
 163     g_signal_connect(hostnamed_interf, "handle-set-static-hostname", G_CALLBACK(on_handle_set_static_hostname), NULL);
 164     g_signal_connect(hostnamed_interf, "handle-set-pretty-hostname", G_CALLBACK(on_handle_set_pretty_hostname), NULL);
 165     g_signal_connect(hostnamed_interf, "handle-set-chassis", G_CALLBACK(on_handle_set_chassis), NULL);
 166     g_signal_connect(hostnamed_interf, "handle-set-icon-name", G_CALLBACK(on_handle_set_icon_name), NULL);
 167
 168     /* set our properties before export */
 169     hostnamed_hostname1_set_hostname(hostnamed_interf, our_get_hostname());
 170     hostnamed_hostname1_set_static_hostname(hostnamed_interf, our_get_static_hostname());
 171     hostnamed_hostname1_set_pretty_hostname(hostnamed_interf, our_get_pretty_hostname());
 172     hostnamed_hostname1_set_chassis(hostnamed_interf, our_get_chassis());
 173     hostnamed_hostname1_set_icon_name(hostnamed_interf, our_get_icon_name());
 174     hostnamed_hostname1_set_kernel_name(hostnamed_interf, our_get_kernel_name());
 175     hostnamed_hostname1_set_kernel_version(hostnamed_interf, our_get_kernel_version());
 176     hostnamed_hostname1_set_kernel_release(hostnamed_interf, our_get_kernel_release());
 177     hostnamed_hostname1_set_operating_system_cpename(hostnamed_interf, our_get_os_cpename());
 178     hostnamed_hostname1_set_operating_system_pretty_name(hostnamed_interf, our_get_os_pretty_name());
 179
 180     if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(hostnamed_interf),
 181                                                                    conn,
 182                                                                    "/org/freedesktop/hostname1",
 183                                                                    NULL)) {
 184
 185         g_printf("failed to export hostname1's interface on system bus!");
 186     }
 187
 188 }
 189
 190 /* free()'s */
 191 void hostnamed_mem_clean() {
 192
 193     g_ptr_array_foreach(hostnamed_freeable, (GFunc) g_free, NULL);
 194 }
 195
 196 static void hostnamed_on_name_lost(GDBusConnection *conn,
 197                          const gchar *name,
 198                          gpointer user_data) {
 199
 200     g_print("lost name %s, exiting...", name);
 201
 202     hostnamed_mem_clean();
 203     g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(hostnamed_interf));
 204
 205     /* TODO exit through g_main_loop properly... */
 206 }
 207
 208 /* safe call to try and start hostnamed */
 209 void hostnamed_init() {
 210
 211     guint bus_descriptor;
 212
 213     bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
 214                                     "org.freedesktop.hostname1",
 215                                     G_BUS_NAME_OWNER_FLAGS_NONE,
 216                                     hostnamed_on_bus_acquired,
 217                                     hostnamed_on_name_acquired,
 218                                     hostnamed_on_name_lost,
 219                                     NULL,
 220                                     NULL);
 221
 222     /* TODO: malloc and return reference as if a main() closed */
 223 }
 224
 225 int main() {
 226
 227         GMainLoop *hostnamed_loop;
 228         hostnamed_loop = g_main_loop_new(NULL, TRUE);
 229
 230         /* config stuff here */
 231
 232
 233         hostnamed_init();
 234         g_main_loop_run(hostnamed_loop);
 235         g_main_loop_unref(hostnamed_loop);
 236
 237         return 0;
 238 }
 239
 240 /* TODO figure out DMI variables on obsd */
 241 /*static gchar *guess_icon_name() {
 242
 243     gchar *filebuf = NULL;
 244     gchar *ret = NULL;
 245
 246     #if defined(__i386__) || defined(__x86_64__)
 247
 248        Taken with a few minor changes from systemd's hostnamed.c,
 249        copyright 2011 Lennart Poettering.
 250
 251        See the SMBIOS Specification 2.7.1 section 7.4.1 for
 252        details about the values listed here:
 253
 254        http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_2.7.1.pdf
 255
 256
 257     if (g_file_get_contents ("/sys/class/dmi/id/chassis_type", &filebuf, NULL, NULL)) {
 258         switch (g_ascii_strtoull (filebuf, NULL, 10)) {
 259         case 0x3:
 260         case 0x4:
 261         case 0x5:
 262         case 0x6:
 263         case 0x7:
 264             ret = g_strdup ("computer-desktop");
 265             goto out;
 266         case 0x9:
 267         case 0xA:
 268         case 0xE:
 269             ret = g_strdup ("computer-laptop");
 270             goto out;
 271         case 0x11:
 272         case 0x17:
 273         case 0x1C:
 274         case 0x1D:
 275             ret = g_strdup ("computer-server");
 276             goto out;
 277         }
 278     }
 279     #endif
 280     ret = g_strdup ("computer");
 281   out:
 282     g_free (filebuf);
 283     return ret;
 284 }*/
 285