151 lines
3.9 KiB
C
151 lines
3.9 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* rfkill implementation for busybox
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*
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* Copyright (C) 2010 Malek Degachi <malek-degachi@laposte.net>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config RFKILL
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//config: bool "rfkill"
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//config: default n # doesn't build on Ubuntu 9.04
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//config: select PLATFORM_LINUX
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//config: help
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//config: Enable/disable wireless devices.
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//config:
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//config: rfkill list : list all wireless devices
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//config: rfkill list bluetooth : list all bluetooth devices
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//config: rfkill list 1 : list device corresponding to the given index
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//config: rfkill block|unblock wlan : block/unblock all wlan(wifi) devices
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//config:
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//applet:IF_RFKILL(APPLET(rfkill, BB_DIR_USR_SBIN, BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_RFKILL) += rfkill.o
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//usage:#define rfkill_trivial_usage
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//usage: "COMMAND [INDEX|TYPE]"
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//usage:#define rfkill_full_usage "\n\n"
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//usage: "Enable/disable wireless devices\n"
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//usage: "\nCommands:"
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//usage: "\n list [INDEX|TYPE] List current state"
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//usage: "\n block INDEX|TYPE Disable device"
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//usage: "\n unblock INDEX|TYPE Enable device"
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//usage: "\n"
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//usage: "\n TYPE: all, wlan(wifi), bluetooth, uwb(ultrawideband),"
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//usage: "\n wimax, wwan, gps, fm"
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#include "libbb.h"
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#include <linux/rfkill.h>
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enum {
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OPT_b = (1 << 0), /* must be = 1 */
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OPT_u = (1 << 1),
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OPT_l = (1 << 2),
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};
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int rfkill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int rfkill_main(int argc UNUSED_PARAM, char **argv)
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{
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struct rfkill_event event;
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const char *rf_name;
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int rf_fd;
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int mode;
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int rf_type;
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int rf_idx;
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unsigned rf_opt = 0;
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argv++;
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/* Must have one or two params */
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if (!argv[0] || (argv[1] && argv[2]))
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bb_show_usage();
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mode = O_RDWR | O_NONBLOCK;
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rf_name = argv[1];
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if (strcmp(argv[0], "list") == 0) {
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rf_opt |= OPT_l;
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mode = O_RDONLY | O_NONBLOCK;
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} else if (strcmp(argv[0], "block") == 0 && rf_name) {
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rf_opt |= OPT_b;
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} else if (strcmp(argv[0], "unblock") == 0 && rf_name) {
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rf_opt |= OPT_u;
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} else
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bb_show_usage();
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rf_type = RFKILL_TYPE_ALL;
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rf_idx = -1;
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if (rf_name) {
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static const char rfkill_types[] ALIGN1 = "all\0wlan\0bluetooth\0uwb\0wimax\0wwan\0gps\0fm\0";
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if (strcmp(rf_name, "wifi") == 0)
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rf_name = "wlan";
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if (strcmp(rf_name, "ultrawideband") == 0)
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rf_name = "uwb";
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rf_type = index_in_strings(rfkill_types, rf_name);
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if (rf_type < 0) {
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rf_idx = xatoi_positive(rf_name);
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}
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}
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rf_fd = device_open("/dev/rfkill", mode);
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if (rf_fd < 0)
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bb_perror_msg_and_die("/dev/rfkill");
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if (rf_opt & OPT_l) {
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while (full_read(rf_fd, &event, sizeof(event)) == RFKILL_EVENT_SIZE_V1) {
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parser_t *parser;
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char *tokens[2];
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char rf_sysfs[sizeof("/sys/class/rfkill/rfkill%u/uevent") + sizeof(int)*3];
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char *name, *type;
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if (rf_type && rf_type != event.type && rf_idx < 0) {
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continue;
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}
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if (rf_idx >= 0 && event.idx != rf_idx) {
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continue;
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}
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name = NULL;
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type = NULL;
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sprintf(rf_sysfs, "/sys/class/rfkill/rfkill%u/uevent", event.idx);
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parser = config_open2(rf_sysfs, fopen_for_read);
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while (config_read(parser, tokens, 2, 2, "\n=", PARSE_NORMAL)) {
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if (strcmp(tokens[0], "RFKILL_NAME") == 0) {
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name = xstrdup(tokens[1]);
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continue;
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}
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if (strcmp(tokens[0], "RFKILL_TYPE") == 0) {
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type = xstrdup(tokens[1]);
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continue;
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}
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}
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config_close(parser);
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printf("%u: %s: %s\n", event.idx, name, type);
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printf("\tSoft blocked: %s\n", event.soft ? "yes" : "no");
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printf("\tHard blocked: %s\n", event.hard ? "yes" : "no");
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free(name);
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free(type);
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}
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} else {
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memset(&event, 0, sizeof(event));
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if (rf_type >= 0) {
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event.type = rf_type;
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event.op = RFKILL_OP_CHANGE_ALL;
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}
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if (rf_idx >= 0) {
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event.idx = rf_idx;
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event.op = RFKILL_OP_CHANGE;
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}
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/* Note: OPT_b == 1 */
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event.soft = (rf_opt & OPT_b);
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xwrite(rf_fd, &event, sizeof(event));
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}
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return EXIT_SUCCESS;
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}
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