main.c revision 1.10 
1/*	$NetBSD: main.c,v 1.10 2009/06/05 11:37:30 jnemeth Exp $	*/
2
3/*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30#ifndef lint
31__RCSID("$NetBSD: main.c,v 1.10 2009/06/05 11:37:30 jnemeth Exp $");
32#endif /* !lint */
33
34#include <sys/module.h>
35#include <sys/queue.h>
36
37#include <assert.h>
38#include <stdbool.h>
39#include <stdio.h>
40#include <stdlib.h>
41#include <string.h>
42#include <unistd.h>
43#include <err.h>
44
45#include <prop/proplib.h>
46
47int		main(int, char **);
48static void	parse_bool_param(prop_dictionary_t, const char *,
49				 const char *);
50static void	parse_int_param(prop_dictionary_t, const char *,
51				const char *);
52static void	parse_param(prop_dictionary_t, const char *,
53			    void (*)(prop_dictionary_t, const char *,
54			    const char *));
55static void	parse_string_param(prop_dictionary_t, const char *,
56				   const char *);
57static void	usage(void) __dead;
58static void	merge_dicts(prop_dictionary_t, const prop_dictionary_t);
59
60int
61main(int argc, char **argv)
62{
63	SIMPLEQ_HEAD(del_head, del_item) del_head;
64	modctl_load_t cmdargs;
65	prop_dictionary_t ext_props, props;
66	bool del_props, merge_props, output_props;
67	const char *ext_file;
68	char *propsstr;
69	int ch;
70	int flags;
71
72	struct del_item {
73		SIMPLEQ_ENTRY(del_item) del_items;
74		const char *del_key;
75	} *delp;
76
77	SIMPLEQ_INIT(&del_head);
78	ext_file = NULL;
79	ext_props = NULL;
80	props = prop_dictionary_create();
81	del_props = merge_props = output_props = false;
82	flags = 0;
83
84	while ((ch = getopt(argc, argv, "b:d:fi:m:ps:")) != -1) {
85		switch (ch) {
86		case 'b':
87			parse_param(props, optarg, parse_bool_param);
88			break;
89
90		case 'd':
91			del_props = true;
92			delp = malloc(sizeof(struct del_item));
93			if (delp == NULL)
94				errx(EXIT_FAILURE, "Out of memory");
95			delp->del_key = optarg;
96			SIMPLEQ_INSERT_TAIL(&del_head, delp, del_items);
97			break;
98
99		case 'f':
100			flags |= MODCTL_LOAD_FORCE;
101			break;
102
103		case 'i':
104			parse_param(props, optarg, parse_int_param);
105			break;
106
107		case 'm':
108			merge_props = true;
109			ext_file = optarg;
110			break;
111
112		case 'p':
113			output_props = true;
114			break;
115
116		case 's':
117			parse_param(props, optarg, parse_string_param);
118			break;
119
120		default:
121			usage();
122			/* NOTREACHED */
123		}
124	}
125
126	argc -= optind;
127	argv += optind;
128
129	propsstr = prop_dictionary_externalize(props);
130	if (propsstr == NULL)
131		errx(EXIT_FAILURE, "Failed to process properties");
132
133	if (output_props) {
134		if (merge_props) {
135			ext_props =
136			    prop_dictionary_internalize_from_file(ext_file);
137			if (ext_props == NULL) {
138				errx(EXIT_FAILURE, "Failed to read existing "
139				    "property list");
140			}
141
142			free(propsstr);
143			merge_dicts(ext_props, props);
144
145			if (del_props)
146				SIMPLEQ_FOREACH(delp, &del_head, del_items)
147					prop_dictionary_remove(ext_props,
148					    delp->del_key);
149
150			propsstr = prop_dictionary_externalize(ext_props);
151			if (propsstr == NULL)
152				errx(EXIT_FAILURE, "Failed to process "
153				    "properties");
154		}
155
156		fputs(propsstr, stdout);
157	} else {
158		if (argc != 1)
159			usage();
160		cmdargs.ml_filename = argv[0];
161		cmdargs.ml_flags = flags;
162		cmdargs.ml_props = propsstr;
163		cmdargs.ml_propslen = strlen(propsstr);
164
165		if (modctl(MODCTL_LOAD, &cmdargs)) {
166			err(EXIT_FAILURE, NULL);
167		}
168	}
169
170	free(propsstr);
171	prop_object_release(props);
172
173	exit(EXIT_SUCCESS);
174}
175
176static void
177parse_bool_param(prop_dictionary_t props, const char *name,
178		 const char *value)
179{
180	bool boolvalue;
181
182	assert(name != NULL);
183	assert(value != NULL);
184
185	if (strcasecmp(value, "1") == 0 ||
186	    strcasecmp(value, "true") == 0 ||
187	    strcasecmp(value, "yes") == 0)
188		boolvalue = true;
189	else if (strcasecmp(value, "0") == 0 ||
190	    strcasecmp(value, "false") == 0 ||
191	    strcasecmp(value, "no") == 0)
192		boolvalue = false;
193	else
194		errx(EXIT_FAILURE, "Invalid boolean value `%s'", value);
195
196	prop_dictionary_set(props, name, prop_bool_create(boolvalue));
197}
198
199static void
200parse_int_param(prop_dictionary_t props, const char *name,
201		const char *value)
202{
203	int64_t intvalue;
204
205	assert(name != NULL);
206	assert(value != NULL);
207
208	if (dehumanize_number(value, &intvalue) != 0)
209		err(EXIT_FAILURE, "Invalid integer value `%s'", value);
210
211	prop_dictionary_set(props, name,
212	    prop_number_create_integer(intvalue));
213}
214
215static void
216parse_param(prop_dictionary_t props, const char *origstr,
217	    void (*fmt_handler)(prop_dictionary_t, const char *, const char *))
218{
219	char *name, *value;
220
221	name = strdup(origstr);
222
223	value = strchr(name, '=');
224	if (value == NULL) {
225		free(name);
226		errx(EXIT_FAILURE, "Invalid parameter `%s'", origstr);
227	}
228	*value++ = '\0';
229
230	fmt_handler(props, name, value);
231
232	free(name);
233}
234
235static void
236parse_string_param(prop_dictionary_t props, const char *name,
237		   const char *value)
238{
239
240	assert(name != NULL);
241	assert(value != NULL);
242
243	prop_dictionary_set(props, name, prop_string_create_cstring(value));
244}
245
246static void
247usage(void)
248{
249
250	(void)fprintf(stderr,
251	    "Usage: %s [-f] [-b var=boolean] [-i var=integer] "
252	    "[-s var=string] module\n"
253	    "       %s -p [-b var=boolean] [-d var] [-i var=integer] "
254	    "[-m plist]\n               [-s var=string]\n",
255	    getprogname(), getprogname());
256	exit(EXIT_FAILURE);
257}
258
259static void
260merge_dicts(prop_dictionary_t existing_dict, const prop_dictionary_t new_dict)
261{
262	prop_dictionary_keysym_t props_keysym;
263	prop_object_iterator_t props_iter;
264	prop_object_t props_obj;
265	const char *props_key;
266
267	props_iter = prop_dictionary_iterator(new_dict);
268	if (props_iter == NULL) {
269		errx(EXIT_FAILURE, "Failed to iterate new property list");
270	}
271
272	while ((props_obj = prop_object_iterator_next(props_iter)) != NULL) {
273		props_keysym = (prop_dictionary_keysym_t)props_obj;
274		props_key = prop_dictionary_keysym_cstring_nocopy(props_keysym);
275		props_obj = prop_dictionary_get_keysym(new_dict, props_keysym);
276		if ((props_obj == NULL) || !prop_dictionary_set(existing_dict,
277		    props_key, props_obj)) {
278			errx(EXIT_FAILURE, "Failed to copy "
279			    "existing property list");
280		}
281	}
282	prop_object_iterator_release(props_iter);
283
284	return;
285}
286