1/*	$NetBSD: main.c,v 1.18 2020/06/07 05:49:05 thorpej 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 1.18 2020/06/07 05:49:05 thorpej 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
49static void	parse_bool_param(prop_dictionary_t, const char *,
50				 const char *);
51static void	parse_int_param(prop_dictionary_t, const char *,
52				const char *);
53static void	parse_param(prop_dictionary_t, const char *,
54			    void (*)(prop_dictionary_t, const char *,
55			    const char *));
56static void	parse_string_param(prop_dictionary_t, const char *,
57				   const char *);
58static void	usage(void) __dead;
59static void	merge_dicts(prop_dictionary_t, const prop_dictionary_t);
60
61int
62main(int argc, char **argv)
63{
64	SIMPLEQ_HEAD(del_head, del_item) del_head;
65	modctl_load_t cmdargs;
66	prop_dictionary_t ext_props, props;
67	bool del_props, merge_props, output_props;
68	const char *ext_file;
69	char *propsstr;
70	int ch;
71	int flags;
72
73	struct del_item {
74		SIMPLEQ_ENTRY(del_item) del_items;
75		const char *del_key;
76	} *delp;
77
78	SIMPLEQ_INIT(&del_head);
79	ext_file = NULL;
80	ext_props = NULL;
81	props = prop_dictionary_create();
82	del_props = merge_props = output_props = false;
83	flags = 0;
84
85	while ((ch = getopt(argc, argv, "Pb:d:fi:m:ps:")) != -1) {
86		switch (ch) {
87		case 'P':
88			flags |= MODCTL_NO_PROP;
89			break;
90		case 'b':
91			parse_param(props, optarg, parse_bool_param);
92			break;
93
94		case 'd':
95			del_props = true;
96			delp = malloc(sizeof(struct del_item));
97			if (delp == NULL)
98				errx(EXIT_FAILURE, "Out of memory");
99			delp->del_key = optarg;
100			SIMPLEQ_INSERT_TAIL(&del_head, delp, del_items);
101			break;
102
103		case 'f':
104			flags |= MODCTL_LOAD_FORCE;
105			break;
106
107		case 'i':
108			parse_param(props, optarg, parse_int_param);
109			break;
110
111		case 'm':
112			merge_props = true;
113			ext_file = optarg;
114			break;
115
116		case 'p':
117			output_props = true;
118			break;
119
120		case 's':
121			parse_param(props, optarg, parse_string_param);
122			break;
123
124		default:
125			usage();
126			/* NOTREACHED */
127		}
128	}
129
130	argc -= optind;
131	argv += optind;
132
133	propsstr = prop_dictionary_externalize(props);
134	if (propsstr == NULL)
135		errx(EXIT_FAILURE, "Failed to process properties");
136
137	if (output_props) {
138		if (merge_props) {
139			ext_props =
140			    prop_dictionary_internalize_from_file(ext_file);
141			if (ext_props == NULL) {
142				errx(EXIT_FAILURE, "Failed to read existing "
143				    "property list");
144			}
145
146			free(propsstr);
147			merge_dicts(ext_props, props);
148
149			if (del_props)
150				SIMPLEQ_FOREACH(delp, &del_head, del_items)
151					prop_dictionary_remove(ext_props,
152					    delp->del_key);
153
154			propsstr = prop_dictionary_externalize(ext_props);
155			if (propsstr == NULL)
156				errx(EXIT_FAILURE, "Failed to process "
157				    "properties");
158		}
159
160		fputs(propsstr, stdout);
161	} else {
162		if (argc != 1)
163			usage();
164		if (prog_init && prog_init() == -1)
165			err(1, "prog init failed");
166		cmdargs.ml_filename = argv[0];
167		cmdargs.ml_flags = flags;
168		cmdargs.ml_props = propsstr;
169		cmdargs.ml_propslen = strlen(propsstr);
170
171		if (prog_modctl(MODCTL_LOAD, &cmdargs)) {
172			err(EXIT_FAILURE, "%s", cmdargs.ml_filename);
173		}
174	}
175
176	free(propsstr);
177	prop_object_release(props);
178
179	exit(EXIT_SUCCESS);
180}
181
182static void
183parse_bool_param(prop_dictionary_t props, const char *name,
184		 const char *value)
185{
186	bool boolvalue;
187
188	assert(name != NULL);
189	assert(value != NULL);
190
191	if (strcasecmp(value, "1") == 0 ||
192	    strcasecmp(value, "true") == 0 ||
193	    strcasecmp(value, "yes") == 0)
194		boolvalue = true;
195	else if (strcasecmp(value, "0") == 0 ||
196	    strcasecmp(value, "false") == 0 ||
197	    strcasecmp(value, "no") == 0)
198		boolvalue = false;
199	else
200		errx(EXIT_FAILURE, "Invalid boolean value `%s'", value);
201
202	if (!prop_dictionary_set_bool(props, name, boolvalue))
203		err(EXIT_FAILURE, "prop_dictionary_set_bool");
204}
205
206static void
207parse_int_param(prop_dictionary_t props, const char *name,
208		const char *value)
209{
210	int64_t intvalue;
211
212	assert(name != NULL);
213	assert(value != NULL);
214
215	if (dehumanize_number(value, &intvalue) != 0)
216		err(EXIT_FAILURE, "Invalid integer value `%s'", value);
217
218	if (!prop_dictionary_set_int64(props, name, intvalue))
219		err(EXIT_FAILURE, "prop_dictionary_set_int64");
220}
221
222static void
223parse_param(prop_dictionary_t props, const char *origstr,
224	    void (*fmt_handler)(prop_dictionary_t, const char *, const char *))
225{
226	char *name, *value;
227
228	name = strdup(origstr);
229
230	value = strchr(name, '=');
231	if (value == NULL) {
232		free(name);
233		errx(EXIT_FAILURE, "Invalid parameter `%s'", origstr);
234	}
235	*value++ = '\0';
236
237	fmt_handler(props, name, value);
238
239	free(name);
240}
241
242static void
243parse_string_param(prop_dictionary_t props, const char *name,
244		   const char *value)
245{
246
247	assert(name != NULL);
248	assert(value != NULL);
249
250	if (!prop_dictionary_set_string(props, name, value))
251		err(EXIT_FAILURE, "prop_dictionary_set_string");
252}
253
254static void
255usage(void)
256{
257
258	(void)fprintf(stderr,
259	    "Usage: %s [-fP] [-b var=boolean] [-i var=integer] "
260	    "[-s var=string] module\n"
261	    "       %s -p [-b var=boolean] [-d var] [-i var=integer] "
262	    "[-m plist]\n               [-s var=string]\n",
263	    getprogname(), getprogname());
264	exit(EXIT_FAILURE);
265}
266
267static void
268merge_dicts(prop_dictionary_t existing_dict, const prop_dictionary_t new_dict)
269{
270	prop_dictionary_keysym_t props_keysym;
271	prop_object_iterator_t props_iter;
272	prop_object_t props_obj;
273	const char *props_key;
274
275	props_iter = prop_dictionary_iterator(new_dict);
276	if (props_iter == NULL) {
277		errx(EXIT_FAILURE, "Failed to iterate new property list");
278	}
279
280	while ((props_obj = prop_object_iterator_next(props_iter)) != NULL) {
281		props_keysym = (prop_dictionary_keysym_t)props_obj;
282		props_key = prop_dictionary_keysym_value(props_keysym);
283		props_obj = prop_dictionary_get_keysym(new_dict, props_keysym);
284		if ((props_obj == NULL) || !prop_dictionary_set(existing_dict,
285		    props_key, props_obj)) {
286			errx(EXIT_FAILURE, "Failed to copy "
287			    "existing property list");
288		}
289	}
290	prop_object_iterator_release(props_iter);
291
292	return;
293}
294