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/* 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 (4.4 kb)"
//config: default n # doesn't build on Ubuntu 9.04
//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_simple_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;
}
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