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 int type = PROP_INVALID; 120 DBusError error; 121 122 if (argc <= 1) { 123 usage (argc, argv); 124 return 1; 125 } 126 127 while (1) { 128 int c; 129 int option_index = 0; 130 const char *opt; 131 static struct option long_options[] = { 132 {"udi", 1, NULL, 0}, 133 {"key", 1, NULL, 0}, 134 {"int", 1, NULL, 0}, 135 {"uint64", 1, NULL, 0}, 136 {"string", 1, NULL, 0}, 137 {"double", 1, NULL, 0}, 138 {"bool", 1, NULL, 0}, 139 {"strlist-pre", 1, NULL, 0}, 140 {"strlist-post", 1, NULL, 0}, 141 {"strlist-rem", 1, NULL, 0}, 142 {"remove", 0, NULL, 0}, 143 {"version", 0, NULL, 0}, 144 {"help", 0, NULL, 0}, 145 {NULL, 0, NULL, 0} 146 }; 147 148 c = getopt_long (argc, argv, "", 149 long_options, &option_index); 150 if (c == -1) 151 break; 152 153 switch (c) { 154 case 0: 155 opt = long_options[option_index].name; 156 157 if (strcmp (opt, "help") == 0) { 158 usage (argc, argv); 159 return 0; 160 } else if (strcmp (opt, "key") == 0) { 161 key = strdup (optarg); 162 } else if (strcmp (opt, "string") == 0) { 163 str_value = strdup (optarg); 164 type = PROP_STRING; 165 } else if (strcmp (opt, "int") == 0) { 166 int_value = strtol (optarg, NULL, 0); 167 type = PROP_INT; 168 } else if (strcmp (opt, "uint64") == 0) { 169 uint64_value = strtoull (optarg, NULL, 0); 170 type = PROP_UINT64; 171 } else if (strcmp (opt, "double") == 0) { 172 double_value = (double) atof (optarg); 173 type = PROP_DOUBLE; 174 } else if (strcmp (opt, "bool") == 0) { 175 if (strcmp (optarg, "true") == 0) 176 bool_value = TRUE; 177 else if (strcmp (optarg, "false") == 0) 178 bool_value = FALSE; 179 else { 180 usage (argc, argv); 181 return 1; 182 } 183 type = PROP_BOOL; 184 } else if (strcmp (opt, "strlist-pre") == 0) { 185 str_value = strdup (optarg); 186 type = PROP_STRLIST_PRE; 187 } else if (strcmp (opt, "strlist-post") == 0) { 188 str_value = strdup (optarg); 189 type = PROP_STRLIST_POST; 190 } else if (strcmp (opt, "strlist-rem") == 0) { 191 str_value = strdup (optarg); 192 type = PROP_STRLIST_REM; 193 } else if (strcmp (opt, "remove") == 0) { 194 remove = TRUE; 195 } else if (strcmp (opt, "udi") == 0) { 196 udi = strdup (optarg); 197 } else if (strcmp (opt, "version") == 0) { 198 is_version = TRUE; 199 } 200 break; 201 202 default: 203 usage (argc, argv); 204 return 1; 205 break; 206 } 207 } 208 209 if (is_version) { 210 printf ("hal-set-property " PACKAGE_VERSION "\n"); 211 return 0; 212 } 213 214 /* must have at least one, but not neither or both */ 215 if ((remove && type != PROP_INVALID) || ((!remove) && type == PROP_INVALID)) { 216 usage (argc, argv); 217 return 1; 218 } 219 220 fprintf (stderr, "\n"); 221 222 dbus_error_init (&error); 223 if ((hal_ctx = libhal_ctx_new ()) == NULL) { 224 fprintf (stderr, "error: libhal_ctx_new\n"); 225 return 1; 226 } 227 if (!libhal_ctx_set_dbus_connection (hal_ctx, dbus_bus_get (DBUS_BUS_SYSTEM, &error))) { 228 fprintf (stderr, "error: libhal_ctx_set_dbus_connection: %s: %s\n", error.name, error.message); 229 LIBHAL_FREE_DBUS_ERROR (&error); 230 return 1; 231 } 232 if (!libhal_ctx_init (hal_ctx, &error)) { 233 if (dbus_error_is_set(&error)) { 234 fprintf (stderr, "error: libhal_ctx_init: %s: %s\n", error.name, error.message); 235 LIBHAL_FREE_DBUS_ERROR (&error); 236 } 237 fprintf (stderr, "Could not initialise connection to hald.\n" 238 "Normally this means the HAL daemon (hald) is not running or not ready.\n"); 239 return 1; 240 } 241 242 if (remove) { 243 rc = libhal_device_remove_property (hal_ctx, udi, key, &error); 244 if (!rc) { 245 fprintf (stderr, "error: libhal_device_remove_property: %s: %s\n", error.name, error.message); 246 LIBHAL_FREE_DBUS_ERROR (&error); 247 return 1; 248 } 249 } else { 250 switch (type) { 251 case PROP_STRING: 252 rc = libhal_device_set_property_string (hal_ctx, udi, key, str_value, &error); 253 break; 254 case PROP_INT: 255 rc = libhal_device_set_property_int (hal_ctx, udi, key, int_value, &error); 256 break; 257 case PROP_UINT64: 258 rc = libhal_device_set_property_uint64 (hal_ctx, udi, key, uint64_value, &error); 259 break; 260 case PROP_DOUBLE: 261 rc = libhal_device_set_property_double (hal_ctx, udi, key, double_value, &error); 262 break; 263 case PROP_BOOL: 264 rc = libhal_device_set_property_bool (hal_ctx, udi, key, bool_value, &error); 265 break; 266 case PROP_STRLIST_PRE: 267 rc = libhal_device_property_strlist_prepend (hal_ctx, udi, key, str_value, &error); 268 break; 269 case PROP_STRLIST_POST: 270 rc = libhal_device_property_strlist_append (hal_ctx, udi, key, str_value, &error); 271 break; 272 case PROP_STRLIST_REM: 273 rc = libhal_device_property_strlist_remove (hal_ctx, udi, key, str_value, &error); 274 break; 275 } 276 if (!rc) { 277 fprintf (stderr, "error: libhal_device_set_property: %s: %s\n", error.name, error.message); 278 dbus_error_free (&error); 279 return 1; 280 } 281 } 282 283 return rc ? 0 : 1; 284 } 285 286 /** 287 * @} 288 */ 289