118c2aff7Sartem /***************************************************************************
218c2aff7Sartem  * CVSID: $Id$
318c2aff7Sartem  *
418c2aff7Sartem  * hal_find_by_property.c : Find hal devices
518c2aff7Sartem  *
618c2aff7Sartem  * Copyright (C) 2005 David Zeuthen, <david@fubar.dk>
718c2aff7Sartem  *
818c2aff7Sartem  * Licensed under the Academic Free License version 2.1
918c2aff7Sartem  *
1018c2aff7Sartem  * This program is free software; you can redistribute it and/or modify
1118c2aff7Sartem  * it under the terms of the GNU General Public License as published by
1218c2aff7Sartem  * the Free Software Foundation; either version 2 of the License, or
1318c2aff7Sartem  * (at your option) any later version.
1418c2aff7Sartem  *
1518c2aff7Sartem  * This program is distributed in the hope that it will be useful,
1618c2aff7Sartem  * but WITHOUT ANY WARRANTY; without even the implied warranty of
1718c2aff7Sartem  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1818c2aff7Sartem  * GNU General Public License for more details.
1918c2aff7Sartem  *
2018c2aff7Sartem  * You should have received a copy of the GNU General Public License
2118c2aff7Sartem  * along with this program; if not, write to the Free Software
2218c2aff7Sartem  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
2318c2aff7Sartem  *
2418c2aff7Sartem  **************************************************************************/
2518c2aff7Sartem 
2618c2aff7Sartem 
2718c2aff7Sartem #ifdef HAVE_CONFIG_H
2818c2aff7Sartem #  include <config.h>
2918c2aff7Sartem #endif
3018c2aff7Sartem 
3118c2aff7Sartem #include <stdio.h>
3218c2aff7Sartem #include <string.h>
3318c2aff7Sartem #include <unistd.h>
3418c2aff7Sartem #include <getopt.h>
3518c2aff7Sartem 
3618c2aff7Sartem #include <libhal.h>
3718c2aff7Sartem 
3818c2aff7Sartem 
3918c2aff7Sartem /** Print out program usage.
4018c2aff7Sartem  *
4118c2aff7Sartem  *  @param  argc                Number of arguments given to program
4218c2aff7Sartem  *  @param  argv                Arguments given to program
4318c2aff7Sartem  */
4418c2aff7Sartem static void
usage(int argc,char * argv[])4518c2aff7Sartem usage (int argc, char *argv[])
4618c2aff7Sartem {
4718c2aff7Sartem 	fprintf (stderr,
4818c2aff7Sartem  "\n"
4918c2aff7Sartem  "usage : hal-find-by-property --key <key> --string <value>\n"
5018c2aff7Sartem  "                              [--help] [--verbose] [--version]\n");
5118c2aff7Sartem 
5218c2aff7Sartem /** @todo support other property types a'la hal-[get|set]-property */
5318c2aff7Sartem 
5418c2aff7Sartem 	fprintf (stderr,
5518c2aff7Sartem  "\n"
5618c2aff7Sartem  "        --key            Key of the property to check\n"
5718c2aff7Sartem  "        --string         String value of property\n"
5818c2aff7Sartem  "        --verbose        Be verbose\n"
5918c2aff7Sartem  "        --version        Show version and exit\n"
6018c2aff7Sartem  "        --help           Show this information and exit\n"
6118c2aff7Sartem  "\n"
6218c2aff7Sartem  "This program prints the Unique Device Identifiers for HAL device\n"
6318c2aff7Sartem  "objects where a given property assumes a given value. On success\n"
6418c2aff7Sartem  "the program exists with exit code 0. If there is an error, the\n"
6518c2aff7Sartem  "program exits with an exit code different from 0.\n"
6618c2aff7Sartem  "\n");
6718c2aff7Sartem }
6818c2aff7Sartem 
6918c2aff7Sartem /** Entry point
7018c2aff7Sartem  *
7118c2aff7Sartem  *  @param  argc                Number of arguments given to program
7218c2aff7Sartem  *  @param  argv                Arguments given to program
7318c2aff7Sartem  *  @return                     Return code
7418c2aff7Sartem  */
7518c2aff7Sartem int
main(int argc,char * argv[])7618c2aff7Sartem main (int argc, char *argv[])
7718c2aff7Sartem {
7818c2aff7Sartem 	int i;
7918c2aff7Sartem 	int num_udis;
8018c2aff7Sartem 	char **udis;
8118c2aff7Sartem 	char *key = NULL;
8218c2aff7Sartem 	char *value = NULL;
8318c2aff7Sartem 	dbus_bool_t is_verbose = FALSE;
8418c2aff7Sartem 	dbus_bool_t is_version = FALSE;
8518c2aff7Sartem 	DBusError error;
8618c2aff7Sartem 	LibHalContext *hal_ctx;
8718c2aff7Sartem 
8818c2aff7Sartem 	if (argc <= 1) {
8918c2aff7Sartem 		usage (argc, argv);
9018c2aff7Sartem 		return 1;
9118c2aff7Sartem 	}
9218c2aff7Sartem 
9318c2aff7Sartem 	while (1) {
9418c2aff7Sartem 		int c;
9518c2aff7Sartem 		int option_index = 0;
9618c2aff7Sartem 		const char *opt;
9718c2aff7Sartem 		static struct option long_options[] = {
9818c2aff7Sartem 			{"key", 1, NULL, 0},
9918c2aff7Sartem 			{"string", 1, NULL, 0},
10018c2aff7Sartem 			{"verbose", 0, NULL, 0},
10118c2aff7Sartem 			{"version", 0, NULL, 0},
10218c2aff7Sartem 			{"help", 0, NULL, 0},
10318c2aff7Sartem 			{NULL, 0, NULL, 0}
10418c2aff7Sartem 		};
10518c2aff7Sartem 
10618c2aff7Sartem 		c = getopt_long (argc, argv, "",
10718c2aff7Sartem 				 long_options, &option_index);
10818c2aff7Sartem 		if (c == -1)
10918c2aff7Sartem 			break;
11018c2aff7Sartem 
11118c2aff7Sartem 		switch (c) {
11218c2aff7Sartem 		case 0:
11318c2aff7Sartem 			opt = long_options[option_index].name;
11418c2aff7Sartem 
11518c2aff7Sartem 			if (strcmp (opt, "help") == 0) {
11618c2aff7Sartem 				usage (argc, argv);
11718c2aff7Sartem 				return 0;
11818c2aff7Sartem 			} else if (strcmp (opt, "verbose") == 0) {
11918c2aff7Sartem 				is_verbose = TRUE;
12018c2aff7Sartem 			} else if (strcmp (opt, "version") == 0) {
12118c2aff7Sartem 				is_version = TRUE;
12218c2aff7Sartem 			} else if (strcmp (opt, "key") == 0) {
12318c2aff7Sartem 				key = strdup (optarg);
12418c2aff7Sartem 			} else if (strcmp (opt, "string") == 0) {
12518c2aff7Sartem 				value = strdup (optarg);
12618c2aff7Sartem 			}
12718c2aff7Sartem 			break;
12818c2aff7Sartem 
12918c2aff7Sartem 		default:
13018c2aff7Sartem 			usage (argc, argv);
13118c2aff7Sartem 			return 1;
13218c2aff7Sartem 			break;
13318c2aff7Sartem 		}
13418c2aff7Sartem 	}
13518c2aff7Sartem 
13618c2aff7Sartem 	if (is_version) {
13718c2aff7Sartem 		printf ("hal-find-by-property " PACKAGE_VERSION "\n");
13818c2aff7Sartem 		return 0;
13918c2aff7Sartem 	}
14018c2aff7Sartem 
14118c2aff7Sartem 	if (key == NULL || value == NULL) {
14218c2aff7Sartem 		usage (argc, argv);
14318c2aff7Sartem 		return 1;
14418c2aff7Sartem 	}
14518c2aff7Sartem 
146*55fea89dSDan Cross 	dbus_error_init (&error);
14718c2aff7Sartem 	if ((hal_ctx = libhal_ctx_new ()) == NULL) {
14818c2aff7Sartem 		fprintf (stderr, "error: libhal_ctx_new\n");
14918c2aff7Sartem 		return 1;
15018c2aff7Sartem 	}
15118c2aff7Sartem 	if (!libhal_ctx_set_dbus_connection (hal_ctx, dbus_bus_get (DBUS_BUS_SYSTEM, &error))) {
15218c2aff7Sartem 		fprintf (stderr, "error: libhal_ctx_set_dbus_connection: %s: %s\n", error.name, error.message);
15318c2aff7Sartem 		LIBHAL_FREE_DBUS_ERROR (&error);
15418c2aff7Sartem 		return 1;
15518c2aff7Sartem 	}
15618c2aff7Sartem 	if (!libhal_ctx_init (hal_ctx, &error)) {
15718c2aff7Sartem 		if (dbus_error_is_set(&error)) {
15818c2aff7Sartem 			fprintf (stderr, "error: libhal_ctx_init: %s: %s\n", error.name, error.message);
15918c2aff7Sartem 			LIBHAL_FREE_DBUS_ERROR (&error);
16018c2aff7Sartem 		}
16118c2aff7Sartem 		fprintf (stderr, "Could not initialise connection to hald.\n"
16218c2aff7Sartem 				 "Normally this means the HAL daemon (hald) is not running or not ready.\n");
16318c2aff7Sartem 		return 1;
16418c2aff7Sartem 	}
16518c2aff7Sartem 
16618c2aff7Sartem 
16718c2aff7Sartem 	udis = libhal_manager_find_device_string_match (hal_ctx, key, value, &num_udis, &error);
16818c2aff7Sartem 
16918c2aff7Sartem 	if (dbus_error_is_set (&error)) {
17018c2aff7Sartem 		fprintf (stderr, "error: %s: %s\n", error.name, error.message);
17118c2aff7Sartem 		LIBHAL_FREE_DBUS_ERROR (&error);
17218c2aff7Sartem 		return 1;
17318c2aff7Sartem 	}
17418c2aff7Sartem 
17518c2aff7Sartem 	if (is_verbose)
17618c2aff7Sartem 		printf ("Found %d device objects with string property %s = '%s'\n", num_udis, key, value);
17718c2aff7Sartem 
17818c2aff7Sartem 	if (num_udis == 0) {
17918c2aff7Sartem 		return 1;
18018c2aff7Sartem 	}
18118c2aff7Sartem 
18218c2aff7Sartem 	for (i = 0; i < num_udis; i++) {
18318c2aff7Sartem 		printf ("%s\n", udis[i]);
18418c2aff7Sartem 	}
18518c2aff7Sartem 
18618c2aff7Sartem 	libhal_free_string_array (udis);
18718c2aff7Sartem 
18818c2aff7Sartem 	return 0;
18918c2aff7Sartem }
19018c2aff7Sartem 
19118c2aff7Sartem /**
19218c2aff7Sartem  * @}
19318c2aff7Sartem  */
194