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#!/bin/sh
print_iwlist_env(){
# takes environment:
# count
# MAC
# CHANNEL
# QUALITY
# ENCRYPTION
# ESSID
# WPA
# WPA2
for i in ESSID MAC CHANNEL QUALITY ENCRYPTION WPA WPA2;do
eval echo ${i}_${count}=\$${i}
done
}
iwlist_scan(){
# usage: iwlist_scan $wifi-itf
ifconfig $wifi up
count=0
iwlist ${1:-} scan 2>/dev/null | ( while read line;
do
case "$line" in
*"Cell "*)
[ $count -eq 0 ] || print_iwlist_env
WPA=0
WPA2=0
: $((count+=1))
MAC="${line#*Address: }"
;;
*Channel:*)
CHANNEL="${line#*:}"
;;
*Quality=*)
QUALITY="`printf '%s' ${line#*Quality=} | cut -d/ -f 1`"
;;
*"Encryption key:"*)
ENCRYPTION="${line#*key:}"
;;
*ESSID:*)
ESSID="${line#*ESSID:}"
;;
*"IE: IEEE 802.11i/WPA2"*)
WPA2=1
;;
*"IE: WPA Version 1"*)
WPA=1
;;
*);;
esac
done; print_iwlist_env ;echo WIFI_COUNT=$count)
}
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