summaryrefslogtreecommitdiff
path: root/miscutils/rfkill.c
blob: 546928402fbd50b3cfc08c2ea9fe4b80e3c674ac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
/* vi: set sw=4 ts=4: */
/*
* rfkill implementation for busybox
*
* Copyright (C) 2010  Malek Degachi <malek-degachi@laposte.net>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/

//config:config RFKILL
//config:	bool "rfkill (5.3 kb)"
//config:	default n # doesn't build on Ubuntu 9.04
//config:	select PLATFORM_LINUX
//config:	help
//config:	Enable/disable wireless devices.
//config:
//config:	rfkill list : list all wireless devices
//config:	rfkill list bluetooth : list all bluetooth devices
//config:	rfkill list 1 : list device corresponding to the given index
//config:	rfkill block|unblock wlan : block/unblock all wlan(wifi) devices
//config:

//applet:IF_RFKILL(APPLET(rfkill, BB_DIR_USR_SBIN, BB_SUID_DROP))

//kbuild:lib-$(CONFIG_RFKILL) += rfkill.o

//usage:#define rfkill_trivial_usage
//usage:       "COMMAND [INDEX|TYPE]"
//usage:#define rfkill_full_usage "\n\n"
//usage:       "Enable/disable wireless devices\n"
//usage:       "\nCommands:"
//usage:     "\n	list [INDEX|TYPE]	List current state"
//usage:     "\n	block INDEX|TYPE	Disable device"
//usage:     "\n	unblock INDEX|TYPE	Enable device"
//usage:     "\n"
//usage:     "\n	TYPE: all, wlan(wifi), bluetooth, uwb(ultrawideband),"
//usage:     "\n		wimax, wwan, gps, fm"

#include "libbb.h"
#include <linux/rfkill.h>

enum {
	OPT_b = (1 << 0), /* must be = 1 */
	OPT_u = (1 << 1),
	OPT_l = (1 << 2),
};

int rfkill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int rfkill_main(int argc UNUSED_PARAM, char **argv)
{
	struct rfkill_event event;
	const char *rf_name;
	int rf_fd;
	int mode;
	int rf_type;
	int rf_idx;
	unsigned rf_opt = 0;

	argv++;
	/* Must have one or two params */
	if (!argv[0] || (argv[1] && argv[2]))
		bb_show_usage();

	mode = O_RDWR | O_NONBLOCK;
	rf_name = argv[1];
	if (strcmp(argv[0], "list") == 0) {
		rf_opt |= OPT_l;
		mode = O_RDONLY | O_NONBLOCK;
	} else if (strcmp(argv[0], "block") == 0 && rf_name) {
		rf_opt |= OPT_b;
	} else if (strcmp(argv[0], "unblock") == 0 && rf_name) {
		rf_opt |= OPT_u;
	} else
		bb_show_usage();

	rf_type = RFKILL_TYPE_ALL;
	rf_idx = -1;
	if (rf_name) {
		static const char rfkill_types[] ALIGN1 = "all\0wlan\0bluetooth\0uwb\0wimax\0wwan\0gps\0fm\0";
		if (strcmp(rf_name, "wifi") == 0)
			rf_name = "wlan";
		if (strcmp(rf_name, "ultrawideband") == 0)
			rf_name = "uwb";
		rf_type = index_in_strings(rfkill_types, rf_name);
		if (rf_type < 0) {
			rf_idx = xatoi_positive(rf_name);
		}
	}

	rf_fd = device_open("/dev/rfkill", mode);
	if (rf_fd < 0)
		bb_perror_msg_and_die("/dev/rfkill");

	if (rf_opt & OPT_l) {
		while (full_read(rf_fd, &event, sizeof(event)) == RFKILL_EVENT_SIZE_V1) {
			parser_t *parser;
			char *tokens[2];
			char rf_sysfs[sizeof("/sys/class/rfkill/rfkill%u/uevent") + sizeof(int)*3];
			char *name, *type;

			if (rf_type && rf_type != event.type && rf_idx < 0) {
				continue;
			}

			if (rf_idx >= 0 && event.idx != rf_idx) {
				continue;
			}

			name = NULL;
			type = NULL;
			sprintf(rf_sysfs, "/sys/class/rfkill/rfkill%u/uevent", event.idx);
			parser = config_open2(rf_sysfs, fopen_for_read);
			while (config_read(parser, tokens, 2, 2, "\n=", PARSE_NORMAL)) {
				if (strcmp(tokens[0], "RFKILL_NAME") == 0) {
					name = xstrdup(tokens[1]);
					continue;
				}
				if (strcmp(tokens[0], "RFKILL_TYPE") == 0) {
					type = xstrdup(tokens[1]);
					continue;
				}
			}
			config_close(parser);

			printf("%u: %s: %s\n", event.idx, name, type);
			printf("\tSoft blocked: %s\n", event.soft ? "yes" : "no");
			printf("\tHard blocked: %s\n", event.hard ? "yes" : "no");
			free(name);
			free(type);
		}
	} else {
		memset(&event, 0, sizeof(event));
		if (rf_type >= 0) {
			event.type = rf_type;
			event.op = RFKILL_OP_CHANGE_ALL;
		}

		if (rf_idx >= 0) {
			event.idx = rf_idx;
			event.op = RFKILL_OP_CHANGE;
		}

		/* Note: OPT_b == 1 */
		event.soft = (rf_opt & OPT_b);

		xwrite(rf_fd, &event, sizeof(event));
	}

	return EXIT_SUCCESS;
}