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