Home | History | Annotate | Line # | Download | only in modload
      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 
     49 static void	parse_bool_param(prop_dictionary_t, const char *,
     50 				 const char *);
     51 static void	parse_int_param(prop_dictionary_t, const char *,
     52 				const char *);
     53 static void	parse_param(prop_dictionary_t, const char *,
     54 			    void (*)(prop_dictionary_t, const char *,
     55 			    const char *));
     56 static void	parse_string_param(prop_dictionary_t, const char *,
     57 				   const char *);
     58 static void	usage(void) __dead;
     59 static void	merge_dicts(prop_dictionary_t, const prop_dictionary_t);
     60 
     61 int
     62 main(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 
    182 static void
    183 parse_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 
    206 static void
    207 parse_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 
    222 static void
    223 parse_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 
    242 static void
    243 parse_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 
    254 static void
    255 usage(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 
    267 static void
    268 merge_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