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 */ 323