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#!/usr/bin/awk -f
BEGIN {
chan=0;
essid="";
encr=0;
psk2=0;
psk=0;
i=0;
# find interface - start by finding if in sta mode
while( "uci show wireless" | getline) {
if(/mode=sta/) {
split($0,wl,".");
iface=wl[2];
}
}
close("uci show wireless")
"uci get wireless." iface ".device" | getline radio
close("uci get wireless." iface ".device")
system("ifconfig wlan0 up")
for(;;){
while( "iwlist wlan0 scan" | getline ) {
scan[i++]=$0;
}
close("iwlist wlan0 scan")
for (j=0;j<i;j++) {
$0=scan[j];
if ($1 == "Cell" || $1 == EOF ) {
if(chan == 0) continue;
#get mac
mac=$5
# we're at the end of a record
# process data we have and try to connect
if(psk2 == 1) crypt = "psk2";
else if (psk == 1) crypt ="psk";
else if (encr == 1) crypt = "wep";
else crypt = "none";
psk=0;
psk2=0;
encr=0;
rkey="";
# first we see if we're in blacklist
bl="0"
"cat /etc/wifiblack | grep \"" essid "$\"" | getline bl
close("cat /etc/wifiblack | grep \"" essid "$\"")
if ( bl == "1" ) {
print essid " blacklisted";
continue;
}
# now we get key if we're encrypted
if ( crypt != "none" ) {
"cat /etc/wifipw | grep \"" essid ";\" | sed 's/[^;]*;//' " | getline rkey
close("cat /etc/wifipw | grep \"" essid ";\" | sed 's/.*;//' ")
if ( rkey == "" ) {
m=match(essid,"EasyBox");
if (RLENGTH > 0) {
"easybox_keygen " mac | getline rkey
close("easybox_keygen " mac)
}
else {
print essid " is encrypted and key not in whitelist";
continue;
}
}
}
system("uci set wireless." radio ".channel=" channel);
system("uci set wireless." iface ".ssid=" essid);
if (crypt == "none") {
system("uci set wireless." iface ".encryption=none");
system("uci -q delete wireless." iface ".key");
}
else {
system("uci set wireless." iface ".key=" rkey);
system("uci set wireless." iface ".encryption=" crypt);
}
system("uci show wireless > /tmp/keepalive");
system("wifi up");
while(system("sleep 60; wget -q -T 30 -O /dev/null http://google.com/index.html") == 0) {
system("all_led none")
}
}
else {
# now test for the things we want
# channel
if (/Channel:[0-9]/) {
m=match($0,"Channel");
if (RSTART > 0) {
s=substr($0,m);
n=match(s,/[0-9]+/);
chan=substr(s,n,RLENGTH)
}
continue;
}
# we don't need else as we break on successful find
if (/^ *ESSID/) {
m=match($0,"\".*\"");
if (RSTART > 0) essid=substr($0,m+1,RLENGTH-2);
continue;
}
if (/^ *Encryption key:on/) {
encr = 1;
continue;
}
if (/^ *IE: IEEE 802.11i\/WPA2/) {
psk2=1;
continue;
}
if (/^ *IE: WPA /) {
psk=1;
continue;
}
}
}
}
}
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