ibss.c

   1 #include <errno.h>
   2
   3 #include <netlink/genl/genl.h>
   4 #include <netlink/genl/family.h>
   5 #include <netlink/genl/ctrl.h>
   6 #include <netlink/msg.h>
   7 #include <netlink/attr.h>
   8
   9 #include "nl80211.h"
  10 #include "iw.h"
  11
  12 SECTION(ibss);
  13
  14 static int join_ibss(struct nl80211_state *state,
  15                      struct nl_cb *cb,
  16                      struct nl_msg *msg,
  17                      int argc, char **argv)
  18 {
  19         char *end;
  20         unsigned char abssid[6];
  21         unsigned char rates[NL80211_MAX_SUPP_RATES];
  22         int n_rates = 0;
  23         char *value = NULL, *sptr = NULL;
  24         float rate;
  25
  26         if (argc < 2)
  27                 return 1;
  28
  29         /* SSID */
  30         NLA_PUT(msg, NL80211_ATTR_SSID, strlen(argv[0]), argv[0]);
  31         argv++;
  32         argc--;
  33
  34         /* freq */
  35         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ,
  36                     strtoul(argv[0], &end, 10));
  37         if (*end != '\0')
  38                 return 1;
  39         argv++;
  40         argc--;
  41
  42         if (argc && strcmp(argv[0], "fixed-freq") == 0) {
  43                 NLA_PUT_FLAG(msg, NL80211_ATTR_FREQ_FIXED);
  44                 argv++;
  45                 argc--;
  46         }
  47
  48         if (argc) {
  49                 if (mac_addr_a2n(abssid, argv[0]) == 0) {
  50                         NLA_PUT(msg, NL80211_ATTR_MAC, 6, abssid);
  51                         argv++;
  52                         argc--;
  53                 }
  54         }
  55
  56         /* basic rates */
  57         if (argc > 1 && strcmp(argv[0], "basic-rates") == 0) {
  58                 argv++;
  59                 argc--;
  60
  61                 value = strtok_r(argv[0], ",", &sptr);
  62
  63                 while (value && n_rates < NL80211_MAX_SUPP_RATES) {
  64                         rate = strtod(value, &end);
  65                         rates[n_rates] = rate * 2;
  66
  67                         /* filter out suspicious values  */
  68                         if (*end != '\0' || !rates[n_rates] ||
  69                             rate*2 != rates[n_rates])
  70                                 return 1;
  71
  72                         n_rates++;
  73                         value = strtok_r(NULL, ",", &sptr);
  74                 }
  75
  76                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, n_rates, rates);
  77
  78                 argv++;
  79                 argc--;
  80         }
  81
  82         if (!argc)
  83                 return 0;
  84
  85         if (strcmp(*argv, "key") != 0 && strcmp(*argv, "keys") != 0)
  86                 return 1;
  87
  88         argv++;
  89         argc--;
  90
  91         return parse_keys(msg, argv, argc);
  92  nla_put_failure:
  93         return -ENOSPC;
  94 }
  95
  96 static int leave_ibss(struct nl80211_state *state,
  97                       struct nl_cb *cb,
  98                       struct nl_msg *msg,
  99                       int argc, char **argv)
 100 {
 101         return 0;
 102 }
 103 COMMAND(ibss, leave, NULL,
 104         NL80211_CMD_LEAVE_IBSS, 0, CIB_NETDEV, leave_ibss,
 105         "Leave the current IBSS cell.");
 106 COMMAND(ibss, join,
 107         "<SSID> <freq in MHz> [fixed-freq] [<fixed bssid>] "
 108         "[basic-rates <rate in Mbps,rate2,...>] [key d:0:abcde]",
 109         NL80211_CMD_JOIN_IBSS, 0, CIB_NETDEV, join_ibss,
 110         "Join the IBSS cell with the given SSID, if it doesn't exist create\n"
 111         "it on the given frequency. When fixed frequency is requested, don't\n"
 112         "join/create a cell on a different frequency. When a fixed BSSID is\n"
 113         "requested use that BSSID and do not adopt another cell's BSSID even\n"
 114         "if it has higher TSF and the same SSID.");