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38#include "libbb.h"
39#include <linux/rfkill.h>
40
41enum {
42 OPT_b = (1 << 0),
43 OPT_u = (1 << 1),
44 OPT_l = (1 << 2),
45};
46
47int rfkill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
48int rfkill_main(int argc UNUSED_PARAM, char **argv)
49{
50 struct rfkill_event event;
51 const char *rf_name;
52 int rf_fd;
53 int mode;
54 int rf_type;
55 int rf_idx;
56 unsigned rf_opt = 0;
57
58 argv++;
59
60 if (!argv[0] || (argv[1] && argv[2]))
61 bb_show_usage();
62
63 mode = O_RDWR | O_NONBLOCK;
64 rf_name = argv[1];
65 if (strcmp(argv[0], "list") == 0) {
66 rf_opt |= OPT_l;
67 mode = O_RDONLY | O_NONBLOCK;
68 } else if (strcmp(argv[0], "block") == 0 && rf_name) {
69 rf_opt |= OPT_b;
70 } else if (strcmp(argv[0], "unblock") == 0 && rf_name) {
71 rf_opt |= OPT_u;
72 } else
73 bb_show_usage();
74
75 rf_type = RFKILL_TYPE_ALL;
76 rf_idx = -1;
77 if (rf_name) {
78 static const char rfkill_types[] ALIGN1 = "all\0wlan\0bluetooth\0uwb\0wimax\0wwan\0gps\0fm\0";
79 if (strcmp(rf_name, "wifi") == 0)
80 rf_name = "wlan";
81 if (strcmp(rf_name, "ultrawideband") == 0)
82 rf_name = "uwb";
83 rf_type = index_in_strings(rfkill_types, rf_name);
84 if (rf_type < 0) {
85 rf_idx = xatoi_positive(rf_name);
86 }
87 }
88
89 rf_fd = device_open("/dev/rfkill", mode);
90 if (rf_fd < 0)
91 bb_perror_msg_and_die("/dev/rfkill");
92
93 if (rf_opt & OPT_l) {
94 while (full_read(rf_fd, &event, sizeof(event)) == RFKILL_EVENT_SIZE_V1) {
95 parser_t *parser;
96 char *tokens[2];
97 char rf_sysfs[sizeof("/sys/class/rfkill/rfkill%u/uevent") + sizeof(int)*3];
98 char *name, *type;
99
100 if (rf_type && rf_type != event.type && rf_idx < 0) {
101 continue;
102 }
103
104 if (rf_idx >= 0 && event.idx != rf_idx) {
105 continue;
106 }
107
108 name = NULL;
109 type = NULL;
110 sprintf(rf_sysfs, "/sys/class/rfkill/rfkill%u/uevent", event.idx);
111 parser = config_open2(rf_sysfs, fopen_for_read);
112 while (config_read(parser, tokens, 2, 2, "\n=", PARSE_NORMAL)) {
113 if (strcmp(tokens[0], "RFKILL_NAME") == 0) {
114 name = xstrdup(tokens[1]);
115 continue;
116 }
117 if (strcmp(tokens[0], "RFKILL_TYPE") == 0) {
118 type = xstrdup(tokens[1]);
119 continue;
120 }
121 }
122 config_close(parser);
123
124 printf("%u: %s: %s\n", event.idx, name, type);
125 printf("\tSoft blocked: %s\n", event.soft ? "yes" : "no");
126 printf("\tHard blocked: %s\n", event.hard ? "yes" : "no");
127 free(name);
128 free(type);
129 }
130 } else {
131 memset(&event, 0, sizeof(event));
132 if (rf_type >= 0) {
133 event.type = rf_type;
134 event.op = RFKILL_OP_CHANGE_ALL;
135 }
136
137 if (rf_idx >= 0) {
138 event.idx = rf_idx;
139 event.op = RFKILL_OP_CHANGE;
140 }
141
142
143 event.soft = (rf_opt & OPT_b);
144
145 xwrite(rf_fd, &event, sizeof(event));
146 }
147
148 return EXIT_SUCCESS;
149}
150