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/* rfkill.c - Enable/disable wireless devices.
*
* Copyright 2014 Ranjan Kumar <ranjankumar.bth@gmail.com>
* Copyright 2014 Kyungwan Han <asura321@gmail.com>
*
* No Standard
USE_RFKILL(NEWTOY(rfkill, "<1>2", TOYFLAG_USR|TOYFLAG_SBIN))
config RFKILL
bool "rfkill"
default y
help
usage: rfkill COMMAND [DEVICE]
Enable/disable wireless devices.
Commands:
list [DEVICE] List current state
block DEVICE Disable device
unblock DEVICE Enable device
DEVICE is an index number, or one of:
all, wlan(wifi), bluetooth, uwb(ultrawideband), wimax, wwan, gps, fm.
*/
#define FOR_rfkill
#include "toys.h"
#include <linux/rfkill.h>
void rfkill_main(void)
{
struct rfkill_event rfevent;
int fd, tvar, idx = -1, tid = RFKILL_TYPE_ALL;
char **optargs = toys.optargs;
// Parse command line options
for (tvar = 0; tvar < 3; tvar++)
if (!strcmp((char *[]){"list", "block", "unblock"}[tvar], *optargs)) break;
if (tvar == 3) error_exit("unknown cmd '%s'", *optargs);
if (tvar) {
int i;
struct arglist {
char *name;
int idx;
} rftypes[] = {{"all", RFKILL_TYPE_ALL}, {"wifi", RFKILL_TYPE_WLAN},
{"wlan", RFKILL_TYPE_WLAN}, {"bluetooth", RFKILL_TYPE_BLUETOOTH},
{"uwb", RFKILL_TYPE_UWB}, {"ultrawideband", RFKILL_TYPE_UWB},
{"wimax", RFKILL_TYPE_WIMAX}, {"wwan", RFKILL_TYPE_WWAN},
{"gps", RFKILL_TYPE_GPS}, {"fm", 7}}; // RFKILL_TYPE_FM = 7
if (!*++optargs) error_exit("'%s' needs IDENTIFIER", optargs[-1]);
for (i = 0; i < ARRAY_LEN(rftypes); i++)
if (!strcmp(rftypes[i].name, *optargs)) break;
if (i == ARRAY_LEN(rftypes)) idx = atolx_range(*optargs, 0, INT_MAX);
else tid = rftypes[i].idx;
}
// Perform requested action
fd = xopen("/dev/rfkill", (tvar ? O_RDWR : O_RDONLY)|O_NONBLOCK);
if (tvar) {
// block/unblock
memset(&rfevent, 0, sizeof(rfevent));
rfevent.soft = tvar == 1;
if (idx >= 0) {
rfevent.idx = idx;
rfevent.op = RFKILL_OP_CHANGE;
} else {
rfevent.type = tid;
rfevent.op = RFKILL_OP_CHANGE_ALL;
}
xwrite(fd, &rfevent, sizeof(rfevent));
} else {
// show list.
while (sizeof(rfevent) == readall(fd, &rfevent, sizeof(rfevent))) {
char *line = 0, *name = 0, *type = 0;
FILE *fp;
size_t l = 0;
ssize_t len;
// filter list items
if ((tid > 0 && tid != rfevent.type) || (idx != -1 && idx != rfevent.idx))
continue;
sprintf(toybuf, "/sys/class/rfkill/rfkill%u/uevent", rfevent.idx);
fp = xfopen(toybuf, "r");
while ((len = getline(&line, &l, fp)) > 0) {
char *s = line;
line[len-1] = 0;
if (strstart(&s, "RFKILL_NAME=")) name = xstrdup(s);
else if (strstart(&s, "RFKILL_TYPE=")) type = xstrdup(s);
}
free(line);
fclose(fp);
xprintf("%u: %s: %s\n", rfevent.idx, name, type);
xprintf("\tSoft blocked: %s\n", rfevent.soft ? "yes" : "no");
xprintf("\tHard blocked: %s\n", rfevent.hard ? "yes" : "no");
free(name);
free(type);
}
}
xclose(fd);
}
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