[libiwinfo] fix crash in iwinfo cli when operating on monitor interfaces

diff --git a/contrib/package/iwinfo/src/iwinfo.lua b/contrib/package/iwinfo/src/iwinfo.lua
index bbd2ff7..caa2816 100755 (executable)
--- a/contrib/package/iwinfo/src/iwinfo.lua
+++ b/contrib/package/iwinfo/src/iwinfo.lua
@@ -24,12 +24,16 @@ end
 
 function print_info(api, dev)
        local iw = iwinfo[api]
 
 function print_info(api, dev)
        local iw = iwinfo[api]

+       local enc = iw.encryption(dev)

 
 

-       printf("%-9s Type: %s  ESSID: \"%s\"", dev, api, iw.ssid(dev))
-       printf("          Access Point: %s", iw.bssid(dev))
+       printf("%-9s Type: %s  ESSID: \"%s\"",
+               dev, api, s(iw.ssid(dev)))
+
+       printf("          Access Point: %s",
+               s(iw.bssid(dev)))

 
        printf("          Mode: %s  Channel: %d (%.3f GHz)",
 
        printf("          Mode: %s  Channel: %d (%.3f GHz)",

-               iw.mode(dev), iw.channel(dev), n(iw.frequency(dev)) / 1000)
+               iw.mode(dev), n(iw.channel(dev)), n(iw.frequency(dev)) / 1000)

 
        printf("          Tx-Power: %s dBm  Link Quality: %s/%s",
                s(iw.txpower(dev)), s(iw.quality(dev)), s(iw.quality_max(dev)))
 
        printf("          Tx-Power: %s dBm  Link Quality: %s/%s",
                s(iw.txpower(dev)), s(iw.quality(dev)), s(iw.quality_max(dev)))


@@ -41,7 +45,7 @@ function print_info(api, dev)
                n(iw.bitrate(dev)) / 1000)
 
        printf("          Encryption: %s",
                n(iw.bitrate(dev)) / 1000)
 
        printf("          Encryption: %s",

-               iw.encryption(dev).description)
+               s(enc and enc.description))

 
        print("")
 end
 
        print("")
 end


@@ -84,7 +88,7 @@ function print_txpwrlist(api, dev)
                for _, pe in ipairs(pl) do
                        printf("%s%3d dBm (%4d mW)",
                                (cp == pe.dbm) and "*" or " ",
                for _, pe in ipairs(pl) do
                        printf("%s%3d dBm (%4d mW)",
                                (cp == pe.dbm) and "*" or " ",

-                               pe.dbm, pe.mw)
+                               n(pe.dbm), n(pe.mw))

                end
        else
                print("No TX power information available")
                end
        else
                print("No TX power information available")