util.c

   1 #include <ctype.h>
   2 #include "iw.h"
   3 #include "nl80211.h"
   4
   5 int mac_addr_n2a(char *mac_addr, unsigned char *arg)
   6 {
   7         int i, l;
   8
   9         l = 0;
  10         for (i = 0; i < ETH_ALEN ; i++) {
  11                 if (i == 0) {
  12                         sprintf(mac_addr+l, "%02x", arg[i]);
  13                         l += 2;
  14                 } else {
  15                         sprintf(mac_addr+l, ":%02x", arg[i]);
  16                         l += 3;
  17                 }
  18         }
  19         return 0;
  20 }
  21
  22 int mac_addr_a2n(unsigned char *mac_addr, char *arg)
  23 {
  24         int i;
  25
  26         for (i = 0; i < ETH_ALEN ; i++) {
  27                 int temp;
  28                 char *cp = strchr(arg, ':');
  29                 if (cp) {
  30                         *cp = 0;
  31                         cp++;
  32                 }
  33                 if (sscanf(arg, "%x", &temp) != 1)
  34                         return -1;
  35                 if (temp < 0 || temp > 255)
  36                         return -1;
  37
  38                 mac_addr[i] = temp;
  39                 if (!cp)
  40                         break;
  41                 arg = cp;
  42         }
  43         if (i < ETH_ALEN - 1)
  44                 return -1;
  45
  46         return 0;
  47 }
  48
  49 static const char *ifmodes[NL80211_IFTYPE_MAX + 1] = {
  50         "unspecified",
  51         "IBSS",
  52         "managed",
  53         "AP",
  54         "AP/VLAN",
  55         "WDS",
  56         "monitor",
  57         "mesh point"
  58 };
  59
  60 static char modebuf[100];
  61
  62 const char *iftype_name(enum nl80211_iftype iftype)
  63 {
  64         if (iftype <= NL80211_IFTYPE_MAX)
  65                 return ifmodes[iftype];
  66         sprintf(modebuf, "Unknown mode (%d)", iftype);
  67         return modebuf;
  68 }
  69
  70 int ieee80211_channel_to_frequency(int chan)
  71 {
  72         if (chan < 14)
  73                 return 2407 + chan * 5;
  74
  75         if (chan == 14)
  76                 return 2484;
  77
  78         /* FIXME: dot11ChannelStartingFactor (802.11-2007 17.3.8.3.2) */
  79         return (chan + 1000) * 5;
  80 }
  81
  82 int ieee80211_frequency_to_channel(int freq)
  83 {
  84         if (freq == 2484)
  85                 return 14;
  86
  87         if (freq < 2484)
  88                 return (freq - 2407) / 5;
  89
  90         /* FIXME: dot11ChannelStartingFactor (802.11-2007 17.3.8.3.2) */
  91         return freq/5 - 1000;
  92 }
  93
  94 void print_ssid_escaped(const uint8_t len, const uint8_t *data)
  95 {
  96         int i;
  97
  98         for (i = 0; i < len; i++) {
  99                 if (isprint(data[i]))
 100                         printf("%c", data[i]);
 101                 else
 102                         printf("\\x%.2x", data[i]);
 103         }
 104 }