src/interfaces/logind/logind.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 #include <signal.h>
  20
  21 #include <sys/param.h>
  22 #include <string.h>
  23
  24 #include <glib/gprintf.h>
  25 #include <glib-unix.h>
  26
  27 #include "logind-gen.h"
  28 #include "logind.h"
  29
  30 GPtrArray *logind_freeable;
  31 Login1Manager *logind_interf;
  32
  33 GMainLoop *logind_loop;
  34
  35 guint bus_descriptor;
  36 gboolean dbus_interface_exported; /* reliable because of gdbus operational guarantees */
  37
  38 /* --- begin method/property/dbus signal code --- */
  39
  40 /*static gboolean
  41 on_handle_set_hostname(Login1Manager *hn1_passed_interf,
  42                        GDBusMethodInvocation *invoc,
  43                        const gchar *greet,
  44                        gpointer data) {
  45     return FALSE;
  46 }*/
  47
  48 /*const gchar *
  49 our_get_hostname() {
  50
  51         gchar *hostname_buf, *ret;
  52         size_t hostname_divider;
  53
  54         hostname_buf = (gchar*) g_malloc0(MAXHOSTNAMELEN);
  55         ret          = (gchar*) g_malloc0(MAXHOSTNAMELEN);
  56         g_ptr_array_add(logind_freeable, hostname_buf);
  57         g_ptr_array_add(logind_freeable, ret);
  58
  59         if(gethostname(hostname_buf, MAXHOSTNAMELEN))
  60                 return "";
  61
  62         hostname_divider = strcspn(hostname_buf, ".");
  63
  64         return strncpy(ret, hostname_buf, hostname_divider);
  65 }*/
  66
  67 /* --- end method/property/dbus signal code, begin bus/name handlers --- */
  68
  69 static void logind_on_bus_acquired(GDBusConnection *conn,
  70                                    const gchar *name,
  71                                    gpointer user_data) {
  72
  73     g_print("got bus, name: %s\n", name);
  74
  75 }
  76
  77 static void logind_on_name_acquired(GDBusConnection *conn,
  78                                         const gchar *name,
  79                                     gpointer user_data) {
  80
  81     g_print("got '%s' on system bus\n", name);
  82
  83     logind_interf = login1_manager_skeleton_new();
  84
  85     /* attach function pointers to generated struct's method handlers
  86     g_signal_connect(logind_interf, "handle-set-hostname", G_CALLBACK(on_handle_set_hostname), NULL); */
  87
  88     /* set our properties before export
  89     login1_manager_set_hostname(logind_interf, our_get_hostname()); */
  90
  91     if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(logind_interf),
  92                                          conn,
  93                                          "/org/freedesktop/login1_manager",
  94                                          NULL)) {
  95
  96         g_printf("Failed to export Login1Manager's interface!");
  97     }
  98
  99 }
 100
 101 static void logind_on_name_lost(GDBusConnection *conn,
 102                                 const gchar *name,
 103                                 gpointer user_data) {
 104
 105     g_print("lost name %s, exiting...", name);
 106
 107     logind_mem_clean();
 108     g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(logind_interf));
 109
 110 }
 111
 112 /* --- end bus/name handlers, begin misc unix functions --- */
 113
 114 /* free()'s */
 115 void logind_mem_clean() {
 116
 117     g_ptr_array_foreach(logind_freeable, (GFunc) g_free, NULL);
 118         g_ptr_array_free(logind_freeable, TRUE);
 119 }
 120
 121 int main() {
 122
 123         logind_loop = g_main_loop_new(NULL, TRUE);
 124         logind_freeable = g_ptr_array_new();
 125
 126          bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
 127                                     "org.freedesktop.login1_manager",
 128                                     G_BUS_NAME_OWNER_FLAGS_NONE,
 129                                     logind_on_bus_acquired,
 130                                     logind_on_name_acquired,
 131                                     logind_on_name_lost,
 132                                     NULL,
 133                                     NULL);
 134
 135         g_main_loop_run(logind_loop);
 136         g_main_loop_unref(logind_loop);
 137
 138         g_bus_unown_name(bus_descriptor);
 139
 140         logind_mem_clean();
 141
 142         return 0;
 143 }