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  "           [--direct] [--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  "        --direct         Use direct HAL connection\n"
  92  "        --version        Show version and exit\n"
  93  "        --help           Show this information and exit\n"
  94  "\n"
  95  "This program attempts to set property for a device. Note that, due to\n"
  96  "security considerations, it may not be possible to set a property; on\n"
  97  "success this program exits with exit code 0. On error, the program exits\n"
  98  "with an exit code different from 0\n" "\n");
  99 }
 100
 101 /** Entry point
 102  *
 103  *  @param  argc                Number of arguments given to program
 104  *  @param  argv                Arguments given to program
 105  *  @return                     Return code
 106  */
 107 int
 108 main (int argc, char *argv[])
 109 {
 110         dbus_bool_t rc = 0;
 111         char *udi = NULL;
 112         char *key = NULL;
 113         char *str_value = NULL;
 114         dbus_int32_t int_value = 0;
 115         dbus_uint64_t uint64_value = 0;
 116         double double_value = 0.0f;
 117         dbus_bool_t bool_value = TRUE;
 118         dbus_bool_t remove = FALSE;
 119         dbus_bool_t is_version = FALSE;
 120         dbus_bool_t udi_exists = FALSE;
 121         int type = PROP_INVALID;
 122         DBusError error;
 123         dbus_bool_t direct = FALSE;
 124
 125         if (argc <= 1) {
 126                 usage (argc, argv);
 127                 return 1;
 128         }
 129
 130         while (1) {
 131                 int c;
 132                 int option_index = 0;
 133                 const char *opt;
 134                 static struct option long_options[] = {
 135                         {"udi", 1, NULL, 0},
 136                         {"key", 1, NULL, 0},
 137                         {"int", 1, NULL, 0},
 138                         {"uint64", 1, NULL, 0},
 139                         {"string", 1, NULL, 0},
 140                         {"double", 1, NULL, 0},
 141                         {"bool", 1, NULL, 0},
 142                         {"strlist-pre", 1, NULL, 0},
 143                         {"strlist-post", 1, NULL, 0},
 144                         {"strlist-rem", 1, NULL, 0},
 145                         {"direct", 0, NULL, 0},
 146                         {"remove", 0, NULL, 0},
 147                         {"version", 0, NULL, 0},
 148                         {"help", 0, NULL, 0},
 149                         {NULL, 0, NULL, 0}
 150                 };
 151
 152                 c = getopt_long (argc, argv, "",
 153                                  long_options, &option_index);
 154                 if (c == -1)
 155                         break;
 156
 157                 switch (c) {
 158                 case 0:
 159                         opt = long_options[option_index].name;
 160
 161                         if (strcmp (opt, "help") == 0) {
 162                                 usage (argc, argv);
 163                                 return 0;
 164                         } else if (strcmp (opt, "key") == 0) {
 165                                 key = strdup (optarg);
 166                         } else if (strcmp (opt, "string") == 0) {
 167                                 str_value = strdup (optarg);
 168                                 type = PROP_STRING;
 169                         } else if (strcmp (opt, "int") == 0) {
 170                                 int_value = strtol (optarg, NULL, 0);
 171                                 type = PROP_INT;
 172                         } else if (strcmp (opt, "uint64") == 0) {
 173                                 uint64_value = strtoull (optarg, NULL, 0);
 174                                 type = PROP_UINT64;
 175                         } else if (strcmp (opt, "double") == 0) {
 176                                 double_value = (double) atof (optarg);
 177                                 type = PROP_DOUBLE;
 178                         } else if (strcmp (opt, "bool") == 0) {
 179                                 if (strcmp (optarg, "true") == 0)
 180                                         bool_value = TRUE;
 181                                 else if (strcmp (optarg, "false") == 0)
 182                                         bool_value = FALSE;
 183                                 else {
 184                                         usage (argc, argv);
 185                                         return 1;
 186                                 }
 187                                 type = PROP_BOOL;
 188                         } else if (strcmp (opt, "strlist-pre") == 0) {
 189                                 str_value = strdup (optarg);
 190                                 type = PROP_STRLIST_PRE;
 191                         } else if (strcmp (opt, "strlist-post") == 0) {
 192                                 str_value = strdup (optarg);
 193                                 type = PROP_STRLIST_POST;
 194                         } else if (strcmp (opt, "strlist-rem") == 0) {
 195                                 str_value = strdup (optarg);
 196                                 type = PROP_STRLIST_REM;
 197                         } else if (strcmp (opt, "remove") == 0) {
 198                                 remove = TRUE;
 199                         } else if (strcmp (opt, "direct") == 0) {
 200                                 direct = TRUE;
 201                         } else if (strcmp (opt, "udi") == 0) {
 202                                 udi = strdup (optarg);
 203                         } else if (strcmp (opt, "version") == 0) {
 204                                 is_version = TRUE;
 205                         }
 206                         break;
 207
 208                 default:
 209                         usage (argc, argv);
 210                         return 1;
 211                         break;
 212                 }
 213         }
 214
 215         if (is_version) {
 216                 printf ("hal-set-property " PACKAGE_VERSION "\n");
 217                 return 0;
 218         }
 219
 220         /* must have at least one, but not neither or both */
 221         if ((remove && type != PROP_INVALID) || ((!remove) && type == PROP_INVALID)) {
 222                 usage (argc, argv);
 223                 return 1;
 224         }
 225
 226         fprintf (stderr, "\n");
 227
 228         dbus_error_init (&error);
 229         if (direct) {
 230                 if ((hal_ctx = libhal_ctx_init_direct (&error)) == NULL) {
 231                         fprintf (stderr, "error: libhal_ctx_init_direct\n");
 232                         LIBHAL_FREE_DBUS_ERROR (&error);
 233                         return 1;
 234                 }
 235         } else {
 236                 if ((hal_ctx = libhal_ctx_new ()) == NULL) {
 237                         fprintf (stderr, "error: libhal_ctx_new\n");
 238                         return 1;
 239                 }
 240                 if (!libhal_ctx_set_dbus_connection (hal_ctx, dbus_bus_get (DBUS_BUS_SYSTEM, &error))) {
 241                         fprintf (stderr, "error: libhal_ctx_set_dbus_connection: %s: %s\n", error.name, error.message);
 242                         LIBHAL_FREE_DBUS_ERROR (&error);
 243                         return 1;
 244                 }
 245                 if (!libhal_ctx_init (hal_ctx, &error)) {
 246                         if (dbus_error_is_set(&error)) {
 247                                 fprintf (stderr, "error: libhal_ctx_init: %s: %s\n", error.name, error.message);
 248                                 LIBHAL_FREE_DBUS_ERROR (&error);
 249                         }
 250                         fprintf (stderr, "Could not initialise connection to hald.\n"
 251                                          "Normally this means the HAL daemon (hald) is not running or not ready.\n");
 252                         return 1;
 253                 }
 254         }
 255
 256          /* check UDI exists */
 257         udi_exists = libhal_device_exists (hal_ctx, udi, &error);
 258         if (!udi_exists) {
 259                 fprintf (stderr, "error: UDI %s does not exist\n", udi);
 260                 return 1;
 261         }
 262         if (dbus_error_is_set(&error)) {
 263                 fprintf (stderr, "error: libhal_device_exists: %s: %s\n", error.name, error.message);
 264                 dbus_error_free (&error);
 265                 return 1;
 266         }
 267
 268         if (remove) {
 269                 rc = libhal_device_remove_property (hal_ctx, udi, key, &error);
 270                 if (!rc) {
 271                         if (dbus_error_is_set(&error)) {
 272                                 fprintf (stderr, "error: libhal_device_remove_property: %s: %s\n", error.name, error.message);
 273                                 dbus_error_free (&error);
 274                         } else {
 275                                 fprintf (stderr, "error: libhal_device_remove_property: invalid params.\n");
 276                         }
 277                         return 1;
 278                 }
 279         } else {
 280                 switch (type) {
 281                 case PROP_STRING:
 282                         rc = libhal_device_set_property_string (hal_ctx, udi, key, str_value, &error);
 283                         break;
 284                 case PROP_INT:
 285                         rc = libhal_device_set_property_int (hal_ctx, udi, key, int_value, &error);
 286                         break;
 287                 case PROP_UINT64:
 288                         rc = libhal_device_set_property_uint64 (hal_ctx, udi, key, uint64_value, &error);
 289                         break;
 290                 case PROP_DOUBLE:
 291                         rc = libhal_device_set_property_double (hal_ctx, udi, key, double_value, &error);
 292                         break;
 293                 case PROP_BOOL:
 294                         rc = libhal_device_set_property_bool (hal_ctx, udi, key, bool_value, &error);
 295                         break;
 296                 case PROP_STRLIST_PRE:
 297                         rc = libhal_device_property_strlist_prepend (hal_ctx, udi, key, str_value, &error);
 298                         break;
 299                 case PROP_STRLIST_POST:
 300                         rc = libhal_device_property_strlist_append (hal_ctx, udi, key, str_value, &error);
 301                         break;
 302                 case PROP_STRLIST_REM:
 303                         rc = libhal_device_property_strlist_remove (hal_ctx, udi, key, str_value, &error);
 304                         break;
 305                 }
 306                 if (!rc) {
 307                         if (dbus_error_is_set(&error)) {
 308                                 fprintf (stderr, "error: libhal_device_set_property: %s: %s\n", error.name, error.message);
 309                                 dbus_error_free (&error);
 310                         } else {
 311                                 fprintf (stderr, "error: libhal_device_set_property: invalid params.\n");
 312                         }
 313                         return 1;
 314                 }
 315         }
 316
 317         return rc ? 0 : 1;
 318 }
 319
 320 /**
 321  * @}
 322  */