#! /bin/bash
. /usr/lib/network/network
. "$SUBR_DIR/8021x"
. "$SUBR_DIR/rfkill"

wireless_up() {
    PROFILE="$1"
    load_profile "$PROFILE"

    # Default settings
    SECURITY=${SECURITY:-none}
    WPA_DRIVER=${WPA_DRIVER:-nl80211,wext}

    enable_rf $INTERFACE $RFKILL $RFKILL_NAME || return 1

    # Check if interface exists
    is_interface "$INTERFACE" || { report_fail "interface $INTERFACE does not exist"; return 1; }

    # Kill any lingering wpa_supplicants.
    report_debug wireless_up stop_wpa "$INTERFACE"
    stop_wpa "$INTERFACE"

    # Start wpa_supplicant
    WPA_CTRL_PATH=/run/wpa_supplicant
    if [[ "$SECURITY" = "wpa-config" ]]; then
        WPA_CONF="${WPA_CONF:-/etc/wpa_supplicant.conf}"
        # Use defined control path (FS#24949)
        if grep "^ *ctrl_interface=" "$WPA_CONF" &>/dev/null; then
            WPA_CTRL_PATH=$(grep -m 1 "^ *ctrl_interface=" "$WPA_CONF" | tail -n 1 | cut -d= -f 2- | sed -r 's/DIR=(.*) +GROUP=.*/\1/')
        fi
    else
        WPA_CONF=$(make_wpa_config_file $INTERFACE)
    fi
    report_debug wireless_up start_wpa "$INTERFACE" "$WPA_CONF" "$WPA_DRIVER" "$WPA_OPTS"
    if ! start_wpa "$INTERFACE" "$WPA_CONF" "$WPA_DRIVER" "$WPA_OPTS"; then
        report_fail "wpa_supplicant did not start, possible configuration error"
        return 1
    fi

    # Scan for network's existence first
    if checkyesno "${SCAN:-no}"; then
        report_debug wireless_up scanning
        local OLDESSID="$ESSID"
        if [[ -n "$AP" ]]; then
            BSSID=$(wpa_find_ap "$INTERFACE" "$AP")
        else
            ESSID=$(wpa_find_essid "$INTERFACE" "$ESSID")
        fi
        if [[ $? -gt 0 ]]; then
            report_fail "Wireless network \"$OLDESSID\" not present."
            report_debug wireless_up stop_wpa "$INTERFACE"
            stop_wpa "$INTERFACE"
            return 1
        fi
    fi

    report_debug wireless_up stop_wpa "$INTERFACE"
    stop_wpa "$INTERFACE"

    # Build configuration file
    case "$SECURITY" in
        wpa-config)
            ;;
        none|wep|wpa|wpa-configsection)
            printf "%s\n" "network={" "$(make_wpa_config)" "}" >> "$WPA_CONF"
            report_debug wireless_up "Configuration generated at $WPA_CONF"
            ;;
        *)
            report_fail "Invalid SECURITY setting: $SECURITY"
            ;;
    esac

    # Bring interface up after starting wpa_supplicant
    # This is important since cards such as iwl3945 do not support
    # mode switching when they are already up.
    report_debug wireless_up ifup
    bring_interface up "$INTERFACE" || return 1

    report_debug wireless_up start_wpa "$INTERFACE" "$WPA_CONF" "$WPA_DRIVER" "$WPA_OPTS"
    if ! start_wpa "$INTERFACE" "$WPA_CONF" "$WPA_DRIVER" "$WPA_OPTS"; then
        report_fail "wpa_supplicant did not start, possible configuration error"
        return 1
    fi

    report_debug wireless_up wpa_check
    if ! wpa_check "$INTERFACE" "$TIMEOUT"; then
        report_fail "WPA Authentication/Association Failed"
        return 1
    fi

    if ! "$CONN_DIR/ethernet" up "$PROFILE"; then
        wireless_down "$PROFILE" YES
        return 1
    fi
}

# wireless_down PROFILE [ LEAVE ifconfig up? default no ]
wireless_down() {
    local PROFILE="$1"
    load_profile "$PROFILE"

    "$CONN_DIR/ethernet" down "$PROFILE"

    report_debug wireless_down stop_wpa "$INTERFACE"
    stop_wpa "$INTERFACE"
    rm -rf "$STATE_DIR/wpa.$INTERFACE"

    bring_interface down "$INTERFACE"

    # Handle wireless kill switches
    # Any reason why a hardware switch should be considered on interface down?
    if [[ "$RFKILL" == "soft" ]]; then
        set_rf_state "$INTERFACE" disabled $RFKILL_NAME || return 1
    fi
}

# Returns status of profile - is it still functional?
wireless_status() {
    load_profile "$1"
    if ! wpa_check_current_essid "$INTERFACE" "$ESSID"; then
        return 1
    elif ! ip link show dev "$INTERFACE" | fgrep -q "state UP"; then
        return 1
    fi

}

wireless_$1 "$2" "$3"
exit $?

# vim: ft=sh ts=4 et sw=4 tw=0: