main.c revision 1.15 
1/*	$NetBSD: main.c,v 1.15 2013/02/07 12:04:01 apb 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 1.15 2013/02/07 12:04:01 apb 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
47#include "prog_ops.h"
48
49int		main(int, char **);
50static void	parse_bool_param(prop_dictionary_t, const char *,
51				 const char *);
52static void	parse_int_param(prop_dictionary_t, const char *,
53				const char *);
54static void	parse_param(prop_dictionary_t, const char *,
55			    void (*)(prop_dictionary_t, const char *,
56			    const char *));
57static void	parse_string_param(prop_dictionary_t, const char *,
58				   const char *);
59static void	usage(void) __dead;
60static void	merge_dicts(prop_dictionary_t, const prop_dictionary_t);
61
62int
63main(int argc, char **argv)
64{
65	SIMPLEQ_HEAD(del_head, del_item) del_head;
66	modctl_load_t cmdargs;
67	prop_dictionary_t ext_props, props;
68	bool del_props, merge_props, output_props;
69	const char *ext_file;
70	char *propsstr;
71	int ch;
72	int flags;
73
74	struct del_item {
75		SIMPLEQ_ENTRY(del_item) del_items;
76		const char *del_key;
77	} *delp;
78
79	SIMPLEQ_INIT(&del_head);
80	ext_file = NULL;
81	ext_props = NULL;
82	props = prop_dictionary_create();
83	del_props = merge_props = output_props = false;
84	flags = 0;
85
86	while ((ch = getopt(argc, argv, "Pb:d:fi:m:ps:")) != -1) {
87		switch (ch) {
88		case 'P':
89			flags |= MODCTL_NO_PROP;
90			break;
91		case 'b':
92			parse_param(props, optarg, parse_bool_param);
93			break;
94
95		case 'd':
96			del_props = true;
97			delp = malloc(sizeof(struct del_item));
98			if (delp == NULL)
99				errx(EXIT_FAILURE, "Out of memory");
100			delp->del_key = optarg;
101			SIMPLEQ_INSERT_TAIL(&del_head, delp, del_items);
102			break;
103
104		case 'f':
105			flags |= MODCTL_LOAD_FORCE;
106			break;
107
108		case 'i':
109			parse_param(props, optarg, parse_int_param);
110			break;
111
112		case 'm':
113			merge_props = true;
114			ext_file = optarg;
115			break;
116
117		case 'p':
118			output_props = true;
119			break;
120
121		case 's':
122			parse_param(props, optarg, parse_string_param);
123			break;
124
125		default:
126			usage();
127			/* NOTREACHED */
128		}
129	}
130
131	argc -= optind;
132	argv += optind;
133
134	propsstr = prop_dictionary_externalize(props);
135	if (propsstr == NULL)
136		errx(EXIT_FAILURE, "Failed to process properties");
137
138	if (output_props) {
139		if (merge_props) {
140			ext_props =
141			    prop_dictionary_internalize_from_file(ext_file);
142			if (ext_props == NULL) {
143				errx(EXIT_FAILURE, "Failed to read existing "
144				    "property list");
145			}
146
147			free(propsstr);
148			merge_dicts(ext_props, props);
149
150			if (del_props)
151				SIMPLEQ_FOREACH(delp, &del_head, del_items)
152					prop_dictionary_remove(ext_props,
153					    delp->del_key);
154
155			propsstr = prop_dictionary_externalize(ext_props);
156			if (propsstr == NULL)
157				errx(EXIT_FAILURE, "Failed to process "
158				    "properties");
159		}
160
161		fputs(propsstr, stdout);
162	} else {
163		if (argc != 1)
164			usage();
165		if (prog_init && prog_init() == -1)
166			err(1, "prog init failed");
167		cmdargs.ml_filename = argv[0];
168		cmdargs.ml_flags = flags;
169		cmdargs.ml_props = propsstr;
170		cmdargs.ml_propslen = strlen(propsstr);
171
172		if (prog_modctl(MODCTL_LOAD, &cmdargs)) {
173			err(EXIT_FAILURE, NULL);
174		}
175	}
176
177	free(propsstr);
178	prop_object_release(props);
179
180	exit(EXIT_SUCCESS);
181}
182
183static void
184parse_bool_param(prop_dictionary_t props, const char *name,
185		 const char *value)
186{
187	bool boolvalue;
188	prop_object_t po;
189
190	assert(name != NULL);
191	assert(value != NULL);
192
193	if (strcasecmp(value, "1") == 0 ||
194	    strcasecmp(value, "true") == 0 ||
195	    strcasecmp(value, "yes") == 0)
196		boolvalue = true;
197	else if (strcasecmp(value, "0") == 0 ||
198	    strcasecmp(value, "false") == 0 ||
199	    strcasecmp(value, "no") == 0)
200		boolvalue = false;
201	else
202		errx(EXIT_FAILURE, "Invalid boolean value `%s'", value);
203
204	po = prop_bool_create(boolvalue);
205	if (po == NULL)
206		err(EXIT_FAILURE, "prop_bool_create");
207	prop_dictionary_set(props, name, po);
208}
209
210static void
211parse_int_param(prop_dictionary_t props, const char *name,
212		const char *value)
213{
214	int64_t intvalue;
215	prop_object_t po;
216
217	assert(name != NULL);
218	assert(value != NULL);
219
220	if (dehumanize_number(value, &intvalue) != 0)
221		err(EXIT_FAILURE, "Invalid integer value `%s'", value);
222
223	po = prop_number_create_integer(intvalue);
224	if (po == NULL)
225		err(EXIT_FAILURE, "prop_number_create_integer");
226	prop_dictionary_set(props, name, po);
227}
228
229static void
230parse_param(prop_dictionary_t props, const char *origstr,
231	    void (*fmt_handler)(prop_dictionary_t, const char *, const char *))
232{
233	char *name, *value;
234
235	name = strdup(origstr);
236
237	value = strchr(name, '=');
238	if (value == NULL) {
239		free(name);
240		errx(EXIT_FAILURE, "Invalid parameter `%s'", origstr);
241	}
242	*value++ = '\0';
243
244	fmt_handler(props, name, value);
245
246	free(name);
247}
248
249static void
250parse_string_param(prop_dictionary_t props, const char *name,
251		   const char *value)
252{
253	prop_object_t po;
254
255	assert(name != NULL);
256	assert(value != NULL);
257
258	po = prop_string_create_cstring(value);
259	if (po == NULL)
260		err(EXIT_FAILURE, "prop_string_create_cstring");
261	prop_dictionary_set(props, name, po);
262}
263
264static void
265usage(void)
266{
267
268	(void)fprintf(stderr,
269	    "Usage: %s [-fP] [-b var=boolean] [-i var=integer] "
270	    "[-s var=string] module\n"
271	    "       %s -p [-b var=boolean] [-d var] [-i var=integer] "
272	    "[-m plist]\n               [-s var=string]\n",
273	    getprogname(), getprogname());
274	exit(EXIT_FAILURE);
275}
276
277static void
278merge_dicts(prop_dictionary_t existing_dict, const prop_dictionary_t new_dict)
279{
280	prop_dictionary_keysym_t props_keysym;
281	prop_object_iterator_t props_iter;
282	prop_object_t props_obj;
283	const char *props_key;
284
285	props_iter = prop_dictionary_iterator(new_dict);
286	if (props_iter == NULL) {
287		errx(EXIT_FAILURE, "Failed to iterate new property list");
288	}
289
290	while ((props_obj = prop_object_iterator_next(props_iter)) != NULL) {
291		props_keysym = (prop_dictionary_keysym_t)props_obj;
292		props_key = prop_dictionary_keysym_cstring_nocopy(props_keysym);
293		props_obj = prop_dictionary_get_keysym(new_dict, props_keysym);
294		if ((props_obj == NULL) || !prop_dictionary_set(existing_dict,
295		    props_key, props_obj)) {
296			errx(EXIT_FAILURE, "Failed to copy "
297			    "existing property list");
298		}
299	}
300	prop_object_iterator_release(props_iter);
301
302	return;
303}
304