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 */ 310