#! /bin/bash
# Originally contributed by Neuro: http://bbs.archlinux.org/viewtopic.php?pid=278148#p278148

. /usr/lib/network/network
. /usr/lib/network/wireless

# wifi_auto
#   autoconnect wireless interface
#   $1 - wireless interface
wifi_auto()
{
    local interface="$1"
    report_try "Scanning for networks"
	set_interface up "$interface"	# uses iproute methods---is it there any value to providing option to use ifconfig?
    networks="$(list_networks $interface)"

    if [[ -z $networks ]]; then
		set_interface forcedown "$interface"
        exit_fail "- No networks available."
    fi

    # Loop through all the found essid's, then find a matching profile.

	local found_profile found_essid

	# JP: add ability to use AP instead of ESSID
	# JP: also, make ESSIDs in wireless-dbus CONNECTIONS a regexp instead of a literal
    while read ap essid; do
		while read network; do
			(
				unset CONNECTION INTERFACE AP
            load_profile "$network"
            case "$CONNECTION" in
                wireless-old|wireless|wireless-dbus)
						if [[ "$interface" = "$INTERFACE" ]]; then
							if [[ "$ap" == "$AP" ]]; then
								exit 2
							elif [[ -z "$found_profile" ]]; then
								if [[ "$CONNECTION" == wireless-dbus ]]; then
									if expr match "$essid" "^$ESSID\$" 1>/dev/null; then
							exit 1
                    fi
								elif [[ "$essid" == "$ESSID" ]]; then
									exit 1
								fi
							fi
						fi
                    ;;
            esac
				exit 0
			)
			case $? in
				2) found_profile="$network"
					found_essid="$essid"
					break 2;;
				1) found_profile="$network"
					found_essid="$essid"
				;;
			esac
        done < <(list_profiles)			# avoid subshell we'd get by piping list_profiles to while read
	done < "$networks"					# avoid subshell; list_networks returns name of a tmp file
	rm -f "$networks"				# shouldn't we delete the tmp file?
			
    if [[ -n "$found_profile" ]]; then
		report_success
		if profile_up "$found_profile" "$found_essid"; then		# JP: now we pass literal essid to profile_up as $2
			exit 0
		else
			set_interface forcedown "$interface"
			exit_fail "Couldn't connect profile $found_profile."
		fi
	else
		set_interface forcedown "$interface"
		exit_fail "No profiles matched the local networks."
    fi
    
}

if [[ $(id -u) -ne 0 ]]; then
    exit_stderr "This script needs to be run with root privileges"
fi
if [[ -z "$1" ]]; then
    exit_stderr "Please supply an interface to connect"
fi
wifi_auto "$1"