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