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 " [--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
main(int argc,char * argv[])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