blob: 7411b6fc390d0916668055f966fd2ab5cf90a5bc
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * rfkill implementation for busybox |
4 | * |
5 | * Copyright (C) 2010 Malek Degachi <malek-degachi@laposte.net> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
8 | */ |
9 | |
10 | //config:config RFKILL |
11 | //config: bool "rfkill" |
12 | //config: default n # doesn't build on Ubuntu 9.04 |
13 | //config: select PLATFORM_LINUX |
14 | //config: help |
15 | //config: Enable/disable wireless devices. |
16 | //config: |
17 | //config: rfkill list : list all wireless devices |
18 | //config: rfkill list bluetooth : list all bluetooth devices |
19 | //config: rfkill list 1 : list device corresponding to the given index |
20 | //config: rfkill block|unblock wlan : block/unblock all wlan(wifi) devices |
21 | //config: |
22 | |
23 | //applet:IF_RFKILL(APPLET(rfkill, BB_DIR_USR_SBIN, BB_SUID_DROP)) |
24 | |
25 | //kbuild:lib-$(CONFIG_RFKILL) += rfkill.o |
26 | |
27 | //usage:#define rfkill_trivial_usage |
28 | //usage: "COMMAND [INDEX|TYPE]" |
29 | //usage:#define rfkill_full_usage "\n\n" |
30 | //usage: "Enable/disable wireless devices\n" |
31 | //usage: "\nCommands:" |
32 | //usage: "\n list [INDEX|TYPE] List current state" |
33 | //usage: "\n block INDEX|TYPE Disable device" |
34 | //usage: "\n unblock INDEX|TYPE Enable device" |
35 | //usage: "\n" |
36 | //usage: "\n TYPE: all, wlan(wifi), bluetooth, uwb(ultrawideband)," |
37 | //usage: "\n wimax, wwan, gps, fm" |
38 | |
39 | #include "libbb.h" |
40 | #include <linux/rfkill.h> |
41 | |
42 | enum { |
43 | OPT_b = (1 << 0), /* must be = 1 */ |
44 | OPT_u = (1 << 1), |
45 | OPT_l = (1 << 2), |
46 | }; |
47 | |
48 | int rfkill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
49 | int rfkill_main(int argc UNUSED_PARAM, char **argv) |
50 | { |
51 | struct rfkill_event event; |
52 | const char *rf_name; |
53 | int rf_fd; |
54 | int mode; |
55 | int rf_type; |
56 | int rf_idx; |
57 | unsigned rf_opt = 0; |
58 | |
59 | argv++; |
60 | /* Must have one or two params */ |
61 | if (!argv[0] || (argv[1] && argv[2])) |
62 | bb_show_usage(); |
63 | |
64 | mode = O_RDWR | O_NONBLOCK; |
65 | rf_name = argv[1]; |
66 | if (strcmp(argv[0], "list") == 0) { |
67 | rf_opt |= OPT_l; |
68 | mode = O_RDONLY | O_NONBLOCK; |
69 | } else if (strcmp(argv[0], "block") == 0 && rf_name) { |
70 | rf_opt |= OPT_b; |
71 | } else if (strcmp(argv[0], "unblock") == 0 && rf_name) { |
72 | rf_opt |= OPT_u; |
73 | } else |
74 | bb_show_usage(); |
75 | |
76 | rf_type = RFKILL_TYPE_ALL; |
77 | rf_idx = -1; |
78 | if (rf_name) { |
79 | static const char rfkill_types[] ALIGN1 = "all\0wlan\0bluetooth\0uwb\0wimax\0wwan\0gps\0fm\0"; |
80 | if (strcmp(rf_name, "wifi") == 0) |
81 | rf_name = "wlan"; |
82 | if (strcmp(rf_name, "ultrawideband") == 0) |
83 | rf_name = "uwb"; |
84 | rf_type = index_in_strings(rfkill_types, rf_name); |
85 | if (rf_type < 0) { |
86 | rf_idx = xatoi_positive(rf_name); |
87 | } |
88 | } |
89 | |
90 | rf_fd = device_open("/dev/rfkill", mode); |
91 | if (rf_fd < 0) |
92 | bb_perror_msg_and_die("/dev/rfkill"); |
93 | |
94 | if (rf_opt & OPT_l) { |
95 | while (full_read(rf_fd, &event, sizeof(event)) == RFKILL_EVENT_SIZE_V1) { |
96 | parser_t *parser; |
97 | char *tokens[2]; |
98 | char rf_sysfs[sizeof("/sys/class/rfkill/rfkill%u/uevent") + sizeof(int)*3]; |
99 | char *name, *type; |
100 | |
101 | if (rf_type && rf_type != event.type && rf_idx < 0) { |
102 | continue; |
103 | } |
104 | |
105 | if (rf_idx >= 0 && event.idx != rf_idx) { |
106 | continue; |
107 | } |
108 | |
109 | name = NULL; |
110 | type = NULL; |
111 | sprintf(rf_sysfs, "/sys/class/rfkill/rfkill%u/uevent", event.idx); |
112 | parser = config_open2(rf_sysfs, fopen_for_read); |
113 | while (config_read(parser, tokens, 2, 2, "\n=", PARSE_NORMAL)) { |
114 | if (strcmp(tokens[0], "RFKILL_NAME") == 0) { |
115 | name = xstrdup(tokens[1]); |
116 | continue; |
117 | } |
118 | if (strcmp(tokens[0], "RFKILL_TYPE") == 0) { |
119 | type = xstrdup(tokens[1]); |
120 | continue; |
121 | } |
122 | } |
123 | config_close(parser); |
124 | |
125 | printf("%u: %s: %s\n", event.idx, name, type); |
126 | printf("\tSoft blocked: %s\n", event.soft ? "yes" : "no"); |
127 | printf("\tHard blocked: %s\n", event.hard ? "yes" : "no"); |
128 | free(name); |
129 | free(type); |
130 | } |
131 | } else { |
132 | memset(&event, 0, sizeof(event)); |
133 | if (rf_type >= 0) { |
134 | event.type = rf_type; |
135 | event.op = RFKILL_OP_CHANGE_ALL; |
136 | } |
137 | |
138 | if (rf_idx >= 0) { |
139 | event.idx = rf_idx; |
140 | event.op = RFKILL_OP_CHANGE; |
141 | } |
142 | |
143 | /* Note: OPT_b == 1 */ |
144 | event.soft = (rf_opt & OPT_b); |
145 | |
146 | xwrite(rf_fd, &event, sizeof(event)); |
147 | } |
148 | |
149 | return EXIT_SUCCESS; |
150 | } |
151 |