test-config-foreach.sh

#!/bin/sh
#
#	./test-config-foreach.sh 
#	SSID wificity_f16e82_2G UP !!!
#	SSID wificity_f16e82_guest DISABLED !!!
#	SSID wificity_f16e82_5G UP !!!
#	SSID wificity_f16e82_2G_1 UP !!!
#	SSID wificity_f16e82_5G_1 UP !!!
#	SSID wificity_f16e82_2G_2 UP !!!
#	SSID wificity_f16e82_5G_2 UP !!!
#	SSID wificity_f16e82_2G_3 UP !!!
#	SSID wificity_f16e82_5G_3 UP !!!
#	SSID wificity_f16e82_2G_4 UP !!!
#	SSID wificity_f16e82_5G_4 UP !!!
#	SSID wificity_f16e82_2G_5 UP !!!
#	SSID wificity_f16e82_5G_5 UP !!!
#	SSID wificity_f16e82_2G_6 UP !!!
#	SSID wificity_f16e82_5G_6 UP !!!
#	SSID wificity_f16e82_2G_7 UP !!!
#	SSID wificity_f16e82_5G_7 UP !!!
#	SSID wificity_f16e82_2G_8 UP !!!
#	SSID wificity_f16e82_5G_8 UP !!!
#	SSID wificity_f16e82_2G_9 UP !!!
#	SSID wificity_f16e82_5G_9 UP !!!
#	SSID wificity_f16e82_2G_10 UP !!!
#	SSID wificity_f16e82_5G_10 UP !!!
#	SSID wificity_f16e82_2G_11 UP !!!
#	SSID wificity_f16e82_5G_11 UP !!!
#	SSID wificity_f16e82_2G_12 UP !!!
#	SSID wificity_f16e82_5G_12 UP !!!
#	SSID wificity_f16e82_2G_13 UP !!!
#	SSID wificity_f16e82_5G_13 UP !!!
#	SSID wificity_f16e82_2G_14 UP !!!
#	SSID wificity_f16e82_5G_14 UP !!!
#	SSID wificity_f16e82_5G_15 UP !!!
#	./test-config-foreach.sh: eval: line 1: syntax error: bad substitution <-- Error here
#

. /lib/functions.sh

is_ssid_up() {
	local ssid=$1
	local retval=$2
	local count=0
	local hit=0
	local inf _ssid
	local line_num=$(cat /proc/net/wireless | wc -l)
	
	[ "$line_num" == "2" ] && {
		eval "export -- \"$retval=\"0\"\""
		return
	}
	
	IFS=$'\n'
	for line in $(cat /proc/net/wireless); do
		count=$((count + 1))
		[ "$count" == "1" -o "$count" == "2" ] && continue #skip 1st and 2nd line
		inf=$(echo $line | awk -F":" '{print $1}' | sed 's/ //g')
		[ "$inf" == "wifi0" -o "$inf" == "wifi1" ] && continue
		_ssid=$(iwconfig $inf | awk -F '"' '/ESSID/ {print $2}')
		if [ "$ssid" == "$_ssid" ]; then
			hit=1
			break
		fi
	done

	eval "export -- \"$retval=\"\"$hit\"\"\""
}

# $1: section name
check_ssid_up() {
	local section=$1
	
	config_get ssid $section ssid
	config_get disabled $section disabled

	[ "$disabled" == "1" ] && {
		echo "SSID $ssid DISABLED !!!"
		return
	}

	is_ssid_up "$ssid" "rc"
    
	if [ "$rc" == "0" ]; then
		echo "Checking SSID $ssid !!!"
		sleep 5
		check_ssid_up $section
	else
		echo "SSID $ssid UP !!!"
	fi
}

# $1: section name
check_ssid_cb() {
	local section=$1

	check_ssid_up $section
}

check_all_ssid() {
	config_load wireless
	config_foreach check_ssid_cb wifi-iface
}

main() {
	check_all_ssid
	check_all_ssid
}

main

exit 0