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#!/bin/sh



if [ -n "$1" ] && [ -z "$2" ]; then
        echo "Invalid command. Valid commands: [start|stop] INTERFACE."
        exit 1
fi

if [ -n "$1" ]; then
        if [ "$1" != 'stop' ] && [ "$1" != 'start' ]; then
                echo "Invalid command. Valid commands: [start|stop] INTERFACE."
                exit 1
        fi
fi

if [ -n "$2" ]; then
        ifconfig $2 >/dev/null 2>/dev/null
        if [ $? -ne 0 ]; then
                echo "Error: Interface $2 does not exist."
                exit 1
        fi
fi

COMMAND=$1
INTERFACE_TO_USE=$2

CHIPSET=""
DRIVER=""
PARENT=""

get_interface_info() {
        [ -z "$1" ] && return
        if [ -n "$(echo $1 | grep -E '^(ath|otus|urtwn)[0-9]+$' )" ]; then
                DRIVER="$(echo $1 | sed 's/[0-9]*//g')"
        elif [ -n "$(echo $1 | grep -E ^wlan[0-9]+$)" ]; then
                # It most likely is a monitor interface.
                IFACE_IDX=$(echo $1 | sed 's/[^0-9]*//g')
                PARENT=$(sysctl net.wlan.${IFACE_IDX}.%parent | awk '{print $2}')
                if [ -n "${PARENT}" ]; then
                        get_interface_info ${PARENT}
                        return
                fi
        fi      

        if [ "${DRIVER}" = "ath" ]; then
                CHIPSET=$(dmesg | grep -E "^$1: <" | tail -n 1 | awk -F\< '{print $2}' | awk -F\> '{print $1}' )
        elif [ "${DRIVER}" = "urtwn" ]; then
                USB_INFO=$(dmesg | grep -E "^$1: <" | tail -n 1 | tr ',' '\n' | tail -n 1 | tr '>' ' ')
                USB_ADDR=$(echo ${USB_INFO} | awk '{print $2}')
                USB_BUS=$(echo ${USB_INFO} | awk '{print $4}' | sed 's/[^0-9]*//g')
                VENDOR_ID=$(usbconfig -u ${USB_BUS} -a ${USB_ADDR} dump_device_desc | grep idVendor | awk '{print $3}')
                PRODUCT_ID=$(usbconfig -u ${USB_BUS} -a ${USB_ADDR} dump_device_desc | grep idProduct | awk '{print $3}')
                if [ "${VENDOR_ID}" = "0x0bda" ]; then
                        [ "${PRODUCT_ID}" = "0x8171" ] && CHIPSET="RTL8188SU"
                        [ "${PRODUCT_ID}" = "0x8172" ] && CHIPSET="RTL8191SU"
                        [ "${PRODUCT_ID}" = "0x8174" ] && CHIPSET="RTL8192SU"
                        [ "${PRODUCT_ID}" = "0x8176" ] && CHIPSET="RTL8188CUS"
                        [ "${PRODUCT_ID}" = "0x8178" ] && CHIPSET="RTL8192CU"
                        [ "${PRODUCT_ID}" = "0x8179" ] && CHIPSET="RTL8188EUS"
                        [ "${PRODUCT_ID}" = "0x817f" ] && CHIPSET="RTL8188RU"
                        [ "${PRODUCT_ID}" = "0x8192" ] && CHIPSET="RTL8191SU"
                        [ "${PRODUCT_ID}" = "0x8193" ] && CHIPSET="RTL8192DU"
                        [ "${PRODUCT_ID}" = "0x8199" ] && CHIPSET="RTL8187SU"
                        [ "${PRODUCT_ID}" = "0x8812" ] && CHIPSET="RTL8812AU"
                elif [ "${VENDOR_ID}" = "0x06f8" ] && [ "${PRODUCT_ID}" = "0xe033" ]; then
                        CHIPSET="RTL8188CUS"
                elif [ "${VENDOR_ID}" = "0x2001" ] && [ "${PRODUCT_ID}" = "0x3308" ]; then
                        CHIPSET="RTL8188CUS"
                elif [ "${VENDOR_ID}" = "0x20f4" ] && [ "${PRODUCT_ID}" = "0x648b" ]; then
                        CHIPSET="RTL8188CUS"
                elif [ "${VENDOR_ID}" = "0x7392" ] && [ "${PRODUCT_ID}" = "0x7811" ]; then
                        CHIPSET="RTL8188CUS"
                elif [ "${VENDOR_ID}" = "0x2019" ]; then
                        [ "${PRODUCT_ID}" = "0xab2a" ] && CHIPSET="RTL8188CUS"
                        [ "${PRODUCT_ID}" = "0xed17" ] && CHIPSET="RTL8188CUS"
                elif [ "${VENDOR_ID}" = "0x050d" ]; then
                        [ "${PRODUCT_ID}" = "0x1102" ] && CHIPSET="RTL8188CUS"
                        [ "${PRODUCT_ID}" = "0x11f2" ] && CHIPSET="RTL8188CUS"
                elif [ "${VENDOR_ID}" = "0x0846" ]; then
                        [ "${PRODUCT_ID}" = "0x9041" ] && CHIPSET="RTL8188CUS"
                        [ "${PRODUCT_ID}" = "0x9042" ] && CHIPSET="RTL8188CUS"
                        [ "${PRODUCT_ID}" = "0x9043" ] && CHIPSET="RTL8188CUS"
                fi
                [ -z "${CHIPSET}" ] && CHIPSET="Report dmesg and usbconfig (dump commands) to http://trac.aircrack-ng.org" 
        elif [ -n "${DRIVER}" ]; then
                CHIPSET="Report dmesg and usbconfig (dump commands) to http://trac.aircrack-ng.org"
        else
                CHIPSET="Unknown"
                [ -z "${DRIVER}" ] && DRIVER="Unknown"
        fi
}

printf "\nInterface\tDriver\t\tChipset\n\n"

for IFACE in $(ifconfig -a | grep -E '^(wlan|ath|otus|urtwn)[0-9]+' | awk -F: '{print $1}' )
do
        get_interface_info ${IFACE}
        printf "${IFACE}\t\t${DRIVER}\t\t${CHIPSET}\n\n"
        if [ -n "${PARENT}" ]; then
                printf "\t(monitor mode interface. Parent: ${PARENT})\n"
        fi

        if [ "${INTERFACE_TO_USE}" = "${IFACE}" ]; then
                if [ "${COMMAND}" = 'start' ]; then
                        if [ -n "${PARENT}" ]; then
                                printf "\t Interface is already in monitor mode, ignoring\n"
                        else
                                MONITOR_IFACE=$(ifconfig wlan create wlandev ${IFACE} wlanmode monitor)
                                if [ $? -eq 0 ]; then
                                         printf "\tCreated monitor mode interface ${MONITOR_IFACE} from ${IFACE}\n"
                                else
                                        printf "\tFailed creating monitor interface\n"
                                fi
                        fi
                elif [ "${COMMAND}" = 'stop' ]; then
                        ifconfig ${IFACE} destroy 2>/dev/null
                        if [ $? -ne 0 ]; then
                                printf "\tFailed to remove monitor mode interface ${IFACE}\n"
                        else
                                printf "\tDestroyed monitor interface ${IFACE}\n"
                        fi
                fi
        fi 
done

exit 0