LXR toybox/toys/net/rfkill.c

   1/* rfkill.c - Enable/disable wireless devices.
   2 *
   3 * Copyright 2014 Ranjan Kumar <ranjankumar.bth@gmail.com>
   4 * Copyright 2014 Kyungwan Han <asura321@gmail.com>
   5 *
   6 * No Standard
   7
   8USE_RFKILL(NEWTOY(rfkill, "<1>2", TOYFLAG_USR|TOYFLAG_SBIN))
   9
  10config RFKILL
  11  bool "rfkill"
  12  default y
  13  help
  14    usage: rfkill COMMAND [DEVICE]
  15
  16    Enable/disable wireless devices.
  17
  18    Commands:
  19    list [DEVICE]   List current state
  20    block DEVICE    Disable device
  21    unblock DEVICE  Enable device
  22
  23    DEVICE is an index number, or one of:
  24    all, wlan(wifi), bluetooth, uwb(ultrawideband), wimax, wwan, gps, fm.
  25*/
  26
  27#define FOR_rfkill
  28#include "toys.h"
  29#include <linux/rfkill.h>
  30
  31void rfkill_main(void)
  32{
  33  struct rfkill_event rfevent;
  34  int fd, tvar, idx = -1, tid = RFKILL_TYPE_ALL;
  35  char **optargs = toys.optargs;
  36
  37  // Parse command line options
  38  for (tvar = 0; tvar < 3; tvar++)
  39    if (!strcmp((char *[]){"list", "block", "unblock"}[tvar], *optargs)) break;
  40  if (tvar == 3) error_exit("unknown cmd '%s'", *optargs);
  41  if (tvar) {
  42    int i;
  43    struct arglist {
  44      char *name;
  45      int idx;
  46    } rftypes[] = {{"all", RFKILL_TYPE_ALL}, {"wifi", RFKILL_TYPE_WLAN},
  47      {"wlan", RFKILL_TYPE_WLAN}, {"bluetooth", RFKILL_TYPE_BLUETOOTH},
  48      {"uwb", RFKILL_TYPE_UWB}, {"ultrawideband", RFKILL_TYPE_UWB},
  49      {"wimax", RFKILL_TYPE_WIMAX}, {"wwan", RFKILL_TYPE_WWAN},
  50      {"gps", RFKILL_TYPE_GPS}, {"fm", 7}}; // RFKILL_TYPE_FM = 7
  51
  52    if (!*++optargs) error_exit("'%s' needs IDENTIFIER", optargs[-1]);
  53    for (i = 0; i < ARRAY_LEN(rftypes); i++)
  54      if (!strcmp(rftypes[i].name, *optargs)) break;
  55    if (i == ARRAY_LEN(rftypes)) idx = atolx_range(*optargs, 0, INT_MAX);
  56    else tid = rftypes[i].idx;
  57  }
  58
  59  // Perform requested action
  60  fd = xopen("/dev/rfkill", (tvar ? O_RDWR : O_RDONLY)|O_NONBLOCK);
  61  if (tvar) {
  62    // block/unblock
  63    memset(&rfevent, 0, sizeof(rfevent));
  64    rfevent.soft = tvar == 1;
  65    if (idx >= 0) {
  66      rfevent.idx = idx;
  67      rfevent.op = RFKILL_OP_CHANGE;
  68    } else {
  69      rfevent.type = tid;
  70      rfevent.op = RFKILL_OP_CHANGE_ALL;
  71    }
  72    xwrite(fd, &rfevent, sizeof(rfevent));
  73  } else {
  74    // show list.
  75    while (sizeof(rfevent) == readall(fd, &rfevent, sizeof(rfevent))) {
  76      char *line, *name = 0, *type = 0;
  77
  78      // filter list items
  79      if ((tid > 0 && tid != rfevent.type) || (idx != -1 && idx != rfevent.idx))
  80        continue;
  81
  82      sprintf(toybuf, "/sys/class/rfkill/rfkill%u/uevent", rfevent.idx);
  83      tvar = xopenro(toybuf);
  84      while ((line = get_line(tvar))) {
  85        char *s = line;
  86
  87        if (strstart(&s, "RFKILL_NAME=")) name = xstrdup(s);
  88        else if (strstart(&s, "RFKILL_TYPE=")) type = xstrdup(s);
  89
  90        free(line);
  91      }
  92      xclose(tvar);
  93
  94      xprintf("%u: %s: %s\n", rfevent.idx, name, type);
  95      xprintf("\tSoft blocked: %s\n", rfevent.soft ? "yes" : "no");
  96      xprintf("\tHard blocked: %s\n", rfevent.hard ? "yes" : "no");
  97      free(name);
  98      free(type);
  99    }
 100  }
 101  xclose(fd);
 102}
 103