usr/src/cmd/hal/tools/hal-storage-closetray.c

   1 /***************************************************************************
   2  *
   3  * hal-storage-closetray.c : CloseTray method handler
   4  *
   5  * Copyright (C) 2006 David Zeuthen, <david@fubar.dk>
   6  * Copyright (C) 2006 Sun Microsystems, Inc.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  **************************************************************************/
  23
  24
  25 #ifdef HAVE_CONFIG_H
  26 #  include <config.h>
  27 #endif
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <glib.h>
  33 #include <glib/gstdio.h>
  34 #include <sys/types.h>
  35 #include <unistd.h>
  36
  37 #include <libhal.h>
  38 #include <libhal-storage.h>
  39 #ifdef HAVE_POLKIT
  40 #include <libpolkit.h>
  41 #endif
  42
  43 #include "hal-storage-shared.h"
  44
  45
  46 static void
  47 usage (void)
  48 {
  49         fprintf (stderr, "This program should only be started by hald.\n");
  50         exit (1);
  51 }
  52
  53
  54 void static
  55 unknown_closetray_error (const char *detail)
  56 {
  57         fprintf (stderr, "org.freedesktop.Hal.Device.Storage.UnknownFailure\n");
  58         fprintf (stderr, "%s\n", detail);
  59         exit (1);
  60 }
  61
  62
  63 static void
  64 invalid_closetray_option (const char *option, const char *uid)
  65 {
  66         fprintf (stderr, "org.freedesktop.Hal.Device.Storage.InvalidCloseTrayOption\n");
  67         fprintf (stderr, "The option '%s' is not allowed for uid=%s\n", option, uid);
  68         exit (1);
  69 }
  70
  71 #ifdef __FreeBSD__
  72 #error Need FreeBSD specific changes here
  73 #endif
  74
  75
  76 int
  77 main (int argc, char *argv[])
  78 {
  79         char *udi;
  80         char *device;
  81         LibHalDrive *drive;
  82         DBusError error;
  83         LibHalContext *hal_ctx = NULL;
  84         DBusConnection *system_bus = NULL;
  85 #ifdef HAVE_POLKIT
  86         LibPolKitContext *pol_ctx = NULL;
  87 #endif
  88         char *invoked_by_uid;
  89         char *invoked_by_syscon_name;
  90         int i;
  91         char closetray_options[1024];
  92         char **given_options;
  93         const char *end;
  94
  95         device = getenv ("HAL_PROP_BLOCK_DEVICE");
  96         if (device == NULL)
  97                 usage ();
  98
  99         udi = getenv ("HAL_PROP_INFO_UDI");
 100         if (udi == NULL)
 101                 usage ();
 102
 103         invoked_by_uid = getenv ("HAL_METHOD_INVOKED_BY_UID");
 104
 105         invoked_by_syscon_name = getenv ("HAL_METHOD_INVOKED_BY_SYSTEMBUS_CONNECTION_NAME");
 106
 107         dbus_error_init (&error);
 108         if ((hal_ctx = libhal_ctx_init_direct (&error)) == NULL) {
 109                 printf ("Cannot connect to hald\n");
 110                 LIBHAL_FREE_DBUS_ERROR (&error);
 111                 usage ();
 112         }
 113
 114         dbus_error_init (&error);
 115         system_bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
 116         if (system_bus == NULL) {
 117                 printf ("Cannot connect to the system bus\n");
 118                 LIBHAL_FREE_DBUS_ERROR (&error);
 119                 usage ();
 120         }
 121 #ifdef HAVE_POLKIT
 122         pol_ctx = libpolkit_new_context (system_bus);
 123         if (pol_ctx == NULL) {
 124                 printf ("Cannot get libpolkit context\n");
 125                 unknown_closetray_error ("Cannot get libpolkit context");
 126         }
 127 #endif
 128
 129         /* read from stdin */
 130         if (strlen (fgets (closetray_options, sizeof (closetray_options), stdin)) > 0)
 131                 closetray_options [strlen (closetray_options) - 1] = '\0';
 132         /* validate that input from stdin is UTF-8 */
 133         if (!g_utf8_validate (closetray_options, -1, &end))
 134                 unknown_closetray_error ("Error validating closetray_options as UTF-8");
 135 #ifdef DEBUG
 136         printf ("closetray_options  = '%s'\n", closetray_options);
 137 #endif
 138
 139         /* delete any trailing whitespace options from splitting the string */
 140         given_options = g_strsplit (closetray_options, "\t", 0);
 141         for (i = g_strv_length (given_options) - 1; i >= 0; --i) {
 142                 if (strlen (given_options[i]) > 0)
 143                         break;
 144                 given_options[i] = NULL;
 145         }
 146
 147         /* check options */
 148         for (i = 0; given_options[i] != NULL; i++) {
 149                 char *given = given_options[i];
 150
 151                 /* none supported right now */
 152
 153                 invalid_closetray_option (given, invoked_by_uid);
 154         }
 155         g_strfreev (given_options);
 156
 157         /* should be storage */
 158         if ((drive = libhal_drive_from_udi (hal_ctx, udi)) == NULL) {
 159                 unknown_closetray_error ("Cannot get drive");
 160         }
 161
 162         /* use handle_eject() with the closetray option */
 163         handle_eject (hal_ctx,
 164 #ifdef HAVE_POLKIT
 165                       pol_ctx,
 166 #endif
 167                       libhal_drive_get_udi (drive),
 168                       drive,
 169                       libhal_drive_get_device_file (drive),
 170                       invoked_by_uid,
 171                       invoked_by_syscon_name,
 172                       TRUE /* closetray option */,
 173                       system_bus);
 174
 175         return 0;
 176 }
 177
 178