usr/src/cmd/hal/tools/hal_set_property.c

   1 /***************************************************************************
   2  * CVSID: $Id$
   3  *
   4  * hal_set_property.c : Set property for a device
   5  *
   6  * Copyright (C) 2003 David Zeuthen, <david@fubar.dk>
   7  *
   8  * Licensed under the Academic Free License version 2.1
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  23  *
  24  **************************************************************************/
  25
  26
  27 #ifdef HAVE_CONFIG_H
  28 #  include <config.h>
  29 #endif
  30
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <unistd.h>
  35 #include <getopt.h>
  36
  37 #include <libhal.h>
  38
  39 static LibHalContext *hal_ctx;
  40
  41 enum property_op {
  42         PROP_INT,
  43         PROP_UINT64,
  44         PROP_STRING,
  45         PROP_DOUBLE,
  46         PROP_BOOL,
  47         PROP_STRLIST_PRE,
  48         PROP_STRLIST_POST,
  49         PROP_STRLIST_REM,
  50         PROP_INVALID
  51 };
  52
  53 /**
  54  * @defgroup HalSetProperty  Set HAL device property
  55  * @ingroup HalMisc
  56  *
  57  * @brief A commandline tool setting a property of a device. Uses libhal
  58  *
  59  * @{
  60  */
  61
  62 /** Print out program usage.
  63  *
  64  *  @param  argc                Number of arguments given to program
  65  *  @param  argv                Arguments given to program
  66  */
  67 static void
  68 usage (int argc, char *argv[])
  69 {
  70         fprintf (stderr,
  71  "\n"
  72  "usage : hal-set-property --udi <udi> --key <key>\n"
  73  "           (--int <value> | --string <value> | --bool <value> |\n"
  74  "            --strlist-pre <value> | --strlist-post <value> |\n"
  75  "            --strlist-rem <value> | --double <value> | --remove)\n"
  76  "           [--help] [--version]\n");
  77         fprintf (stderr,
  78  "\n" "        --udi            Unique Device Id\n"
  79  "        --key            Key of the property to set\n"
  80  "        --int            Set value to an integer. Accepts decimal and "
  81  "                         hexadecimal prefixed with 0x or x\n"
  82  "        --uint64         Set value to an integer. Accepts decimal and "
  83  "                         hexadecimal prefixed with 0x or x\n"
  84  "        --string         Set value to a string\n"
  85  "        --double         Set value to a floating point number\n"
  86  "        --bool           Set value to a boolean, ie. true or false\n"
  87  "        --strlist-pre    Prepend a string to a list\n"
  88  "        --strlist-post   Append a string to a list\n"
  89  "        --strlist-rem    Remove a string from a list\n"
  90  "        --remove         Indicates that the property should be removed\n"
  91  "        --version        Show version and exit\n"
  92  "        --help           Show this information and exit\n"
  93  "\n"
  94  "This program attempts to set property for a device. Note that, due to\n"
  95  "security considerations, it may not be possible to set a property; on\n"
  96  "success this program exits with exit code 0. On error, the program exits\n"
  97  "with an exit code different from 0\n" "\n");
  98 }
  99
 100 /** Entry point
 101  *
 102  *  @param  argc                Number of arguments given to program
 103  *  @param  argv                Arguments given to program
 104  *  @return                     Return code
 105  */
 106 int
 107 main (int argc, char *argv[])
 108 {
 109         dbus_bool_t rc = 0;
 110         char *udi = NULL;
 111         char *key = NULL;
 112         char *str_value = NULL;
 113         dbus_int32_t int_value = 0;
 114         dbus_uint64_t uint64_value = 0;
 115         double double_value = 0.0f;
 116         dbus_bool_t bool_value = TRUE;
 117         dbus_bool_t remove = FALSE;
 118         dbus_bool_t is_version = FALSE;
 119         dbus_bool_t udi_exists = FALSE;
 120         int type = PROP_INVALID;
 121         DBusError error;
 122
 123         if (argc <= 1) {
 124                 usage (argc, argv);
 125                 return 1;
 126         }
 127
 128         while (1) {
 129                 int c;
 130                 int option_index = 0;
 131                 const char *opt;
 132                 static struct option long_options[] = {
 133                         {"udi", 1, NULL, 0},
 134                         {"key", 1, NULL, 0},
 135                         {"int", 1, NULL, 0},
 136                         {"uint64", 1, NULL, 0},
 137                         {"string", 1, NULL, 0},
 138                         {"double", 1, NULL, 0},
 139                         {"bool", 1, NULL, 0},
 140                         {"strlist-pre", 1, NULL, 0},
 141                         {"strlist-post", 1, NULL, 0},
 142                         {"strlist-rem", 1, NULL, 0},
 143                         {"remove", 0, NULL, 0},
 144                         {"version", 0, NULL, 0},
 145                         {"help", 0, NULL, 0},
 146                         {NULL, 0, NULL, 0}
 147                 };
 148
 149                 c = getopt_long (argc, argv, "",
 150                                  long_options, &option_index);
 151                 if (c == -1)
 152                         break;
 153
 154                 switch (c) {
 155                 case 0:
 156                         opt = long_options[option_index].name;
 157
 158                         if (strcmp (opt, "help") == 0) {
 159                                 usage (argc, argv);
 160                                 return 0;
 161                         } else if (strcmp (opt, "key") == 0) {
 162                                 key = strdup (optarg);
 163                         } else if (strcmp (opt, "string") == 0) {
 164                                 str_value = strdup (optarg);
 165                                 type = PROP_STRING;
 166                         } else if (strcmp (opt, "int") == 0) {
 167                                 int_value = strtol (optarg, NULL, 0);
 168                                 type = PROP_INT;
 169                         } else if (strcmp (opt, "uint64") == 0) {
 170                                 uint64_value = strtoull (optarg, NULL, 0);
 171                                 type = PROP_UINT64;
 172                         } else if (strcmp (opt, "double") == 0) {
 173                                 double_value = (double) atof (optarg);
 174                                 type = PROP_DOUBLE;
 175                         } else if (strcmp (opt, "bool") == 0) {
 176                                 if (strcmp (optarg, "true") == 0)
 177                                         bool_value = TRUE;
 178                                 else if (strcmp (optarg, "false") == 0)
 179                                         bool_value = FALSE;
 180                                 else {
 181                                         usage (argc, argv);
 182                                         return 1;
 183                                 }
 184                                 type = PROP_BOOL;
 185                         } else if (strcmp (opt, "strlist-pre") == 0) {
 186                                 str_value = strdup (optarg);
 187                                 type = PROP_STRLIST_PRE;
 188                         } else if (strcmp (opt, "strlist-post") == 0) {
 189                                 str_value = strdup (optarg);
 190                                 type = PROP_STRLIST_POST;
 191                         } else if (strcmp (opt, "strlist-rem") == 0) {
 192                                 str_value = strdup (optarg);
 193                                 type = PROP_STRLIST_REM;
 194                         } else if (strcmp (opt, "remove") == 0) {
 195                                 remove = TRUE;
 196                         } else if (strcmp (opt, "udi") == 0) {
 197                                 udi = strdup (optarg);
 198                         } else if (strcmp (opt, "version") == 0) {
 199                                 is_version = TRUE;
 200                         }
 201                         break;
 202
 203                 default:
 204                         usage (argc, argv);
 205                         return 1;
 206                         break;
 207                 }
 208         }
 209
 210         if (is_version) {
 211                 printf ("hal-set-property " PACKAGE_VERSION "\n");
 212                 return 0;
 213         }
 214
 215         /* must have at least one, but not neither or both */
 216         if ((remove && type != PROP_INVALID) || ((!remove) && type == PROP_INVALID)) {
 217                 usage (argc, argv);
 218                 return 1;
 219         }
 220
 221         fprintf (stderr, "\n");
 222
 223         dbus_error_init (&error);
 224         if ((hal_ctx = libhal_ctx_new ()) == NULL) {
 225                 fprintf (stderr, "error: libhal_ctx_new\n");
 226                 return 1;
 227         }
 228         if (!libhal_ctx_set_dbus_connection (hal_ctx, dbus_bus_get (DBUS_BUS_SYSTEM, &error))) {
 229                 fprintf (stderr, "error: libhal_ctx_set_dbus_connection: %s: %s\n", error.name, error.message);
 230                 LIBHAL_FREE_DBUS_ERROR (&error);
 231                 return 1;
 232         }
 233         if (!libhal_ctx_init (hal_ctx, &error)) {
 234                 if (dbus_error_is_set(&error)) {
 235                         fprintf (stderr, "error: libhal_ctx_init: %s: %s\n", error.name, error.message);
 236                         LIBHAL_FREE_DBUS_ERROR (&error);
 237                 }
 238                 fprintf (stderr, "Could not initialise connection to hald.\n"
 239                                  "Normally this means the HAL daemon (hald) is not running or not ready.\n");
 240                 return 1;
 241         }
 242
 243          /* check UDI exists */
 244         udi_exists = libhal_device_exists (hal_ctx, udi, &error);
 245         if (!udi_exists) {
 246                 fprintf (stderr, "error: UDI %s does not exist\n", udi);
 247                 return 1;
 248         }
 249         if (dbus_error_is_set(&error)) {
 250                 fprintf (stderr, "error: libhal_device_exists: %s: %s\n", error.name, error.message);
 251                 dbus_error_free (&error);
 252                 return 1;
 253         }
 254
 255         if (remove) {
 256                 rc = libhal_device_remove_property (hal_ctx, udi, key, &error);
 257                 if (!rc) {
 258                         if (dbus_error_is_set(&error)) {
 259                                 fprintf (stderr, "error: libhal_device_remove_property: %s: %s\n", error.name, error.message);
 260                                 dbus_error_free (&error);
 261                         } else {
 262                                 fprintf (stderr, "error: libhal_device_remove_property: invalid params.\n");
 263                         }
 264                         return 1;
 265                 }
 266         } else {
 267                 switch (type) {
 268                 case PROP_STRING:
 269                         rc = libhal_device_set_property_string (hal_ctx, udi, key, str_value, &error);
 270                         break;
 271                 case PROP_INT:
 272                         rc = libhal_device_set_property_int (hal_ctx, udi, key, int_value, &error);
 273                         break;
 274                 case PROP_UINT64:
 275                         rc = libhal_device_set_property_uint64 (hal_ctx, udi, key, uint64_value, &error);
 276                         break;
 277                 case PROP_DOUBLE:
 278                         rc = libhal_device_set_property_double (hal_ctx, udi, key, double_value, &error);
 279                         break;
 280                 case PROP_BOOL:
 281                         rc = libhal_device_set_property_bool (hal_ctx, udi, key, bool_value, &error);
 282                         break;
 283                 case PROP_STRLIST_PRE:
 284                         rc = libhal_device_property_strlist_prepend (hal_ctx, udi, key, str_value, &error);
 285                         break;
 286                 case PROP_STRLIST_POST:
 287                         rc = libhal_device_property_strlist_append (hal_ctx, udi, key, str_value, &error);
 288                         break;
 289                 case PROP_STRLIST_REM:
 290                         rc = libhal_device_property_strlist_remove (hal_ctx, udi, key, str_value, &error);
 291                         break;
 292                 }
 293                 if (!rc) {
 294                         if (dbus_error_is_set(&error)) {
 295                                 fprintf (stderr, "error: libhal_device_set_property: %s: %s\n", error.name, error.message);
 296                                 dbus_error_free (&error);
 297                         } else {
 298                                 fprintf (stderr, "error: libhal_device_set_property: invalid params.\n");
 299                         }
 300                         return 1;
 301                 }
 302         }
 303
 304         return rc ? 0 : 1;
 305 }
 306
 307 /**
 308  * @}
 309  */