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
usage(int argc,char * argv[])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
main(int argc,char * argv[])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