nexmon – Rev 1

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#!/bin/sh
DEBUG="0"
VERBOSE="0"
ELITE="0"
USERID=""
IFACE=""
checkvm_status=""
MAC80211=0
IW_SOURCE="https://www.kernel.org/pub/software/network/iw/iw-4.3.tar.gz"
IW_ERROR=""
if [ ! -d /sys/ ]; then
        printf "CONFIG_SYSFS is disabled in your kernel, this program will almost certainly not work.\n"
fi

if [ "${1}" = "--elite" ]; then
        shift
        ELITE="1"
fi

if [ "${1}" = "--verbose" ]; then
        shift
        VERBOSE="1"
fi

if [ "${1}" = "--debug" ]; then
        shift
        DEBUG="1"
        VERBOSE="1"
fi

#yes, I know this is in here twice
if [ "${1}" = "--elite" ]; then
        shift
        ELITE="1"
fi


if [ -n "${3}" ];then
        if [ "${3}" -gt 0 ] > /dev/null 2>&1; then
                CH="${3}"
        else
                printf "\nYou have entered an invalid channel \"${3}\" which will be ignored\n"
                CH=3
        fi
else
        CH=10
fi

#TODO LIST

#cleanup getDriver()
#fix to not assume wifi drivers are modules
#rewrite to not have two devices at any one time

if [ -n "$(command -v id 2> /dev/null)" ]; then
        USERID="$(id -u 2> /dev/null)"
fi

if [ -z "${USERID}" ] && [ -n "$(id -ru)" ]; then
        USERID="$(id -ru)"
fi

if [ -n "${USERID}" ] && [ "${USERID}" != "0" ]; then
        printf "Run it as root\n" ; exit 1;
elif [ -z "${USERID}" ]; then
        printf "Unable to determine user id, permission errors may occur.\n"
fi

#check for all needed binaries
if [ ! -x "$(command -v uname 2>&1)" ]; then
        printf "How in the world do you not have uname installed?\n"
        printf "Please select a linux distro which has at least basic functionality (or install uname).\n"
        exit 1
else
        OS=$(uname -s)
        #Recognized values are Linux and Darwin
fi

if [ ! -x "$(command -v ip 2>&1)" ] && [ ! -x "$(command -v ifconfig 2>&1)" ]; then
        printf "You have neither ip (iproute2) nor ifconfig installed.\n"
        printf "Please install one of them from your distro's package manager.\n"
        exit 1
fi

if [ ! -x "$(command -v iw 2>&1)" ]; then
        printf "You don't have iw installed, please install it from your distro's package manager.\n"
        printf "If your distro doesn't have a recent version you can download it from this link:\n"
        printf "${IW_SOURCE}\n"
        exit 1
fi

if [ ! -x "$(command -v ethtool 2>&1)" ]; then
        printf "Please install the ethtool package for your distro.\n"
        exit 1
fi

if [ -d /sys/bus/usb ]; then
        if [ ! -x "$(command -v lsusb 2>&1)" ]; then
                printf "Please install lsusb from your distro's package manager.\n"
                exit 1
        else
                LSUSB=1
        fi
else
        LSUSB=0
fi

if [ -d /sys/bus/pci ] || [ -d /sys/bus/pci_express ] || [ -d /proc/bus/pci ]; then
        if [ ! -x "$(command -v lspci 2>&1)" ]; then
                printf "Please install lspci from your distro's package manager.\n"
                exit 1
        else
                LSPCI=1
        fi
else
        LSPCI=0
fi

if [ -f /proc/modules ] || [ -d /sys/module ]; then
        if [ ! -x "$(command -v modprobe 2>&1)" ]; then
                printf "Your kernel has module support but you don't have modprobe installed.\n"
                printf "It is highly recommended to install modprobe (typically from kmod).\n"
                MODPROBE=0
        else
                MODPROBE=1
        fi
        if [ ! -x "$(command -v modinfo 2>&1)" ]; then
                printf "Your kernel has module support but you don't have modinfo installed.\n"
                printf "It is highly recommended to install modinfo (typically from kmod).\n"
                printf "Warning: driver detection without modinfo may yield inaccurate results.\n"
                MODINFO=0
        else
                MODINFO=1
        fi
else
        MODINFO=0
fi

if [ -c /dev/rfkill ]; then
        if [ ! -x "$(command -v rfkill 2>&1)" ];then
                printf "Your kernel supports rfkill but you don't have rfkill installed.\n"
                printf "To ensure devices are unblocked you must install rfkill.\n"
                RFKILL=0
        else
                RFKILL=1
        fi
else
        RFKILL=0
fi

if [ ! -x "$(command -v awk 2>&1)" ]; then
        printf "How in the world do you not have awk installed?\n"
        printf "Please select a linux distro which has at least basic functionality (or install awk).\n"
        exit 1
fi

if [ ! -x "$(command -v grep 2>&1)" ]; then
        printf "How in the world do you not have grep installed?\n"
        printf "Please select a linux distro which has at least basic functionality (or install grep).\n"
        exit 1
fi
#done checking for binaries

usage() {
        printf "usage: $(basename $0) <start|stop|check> <interface> [channel or frequency]\n\n"
        exit 0
}

handleLostPhys() {
        MISSING_INTERFACE=""
        for i in $(ls /sys/class/ieee80211/); do
                if [ ! -d /sys/class/ieee80211/${i}/device/net ]; then
                        MISSING_INTERFACE="${i}"
                        printf "\nFound ${MISSING_INTERFACE} with no interfaces assigned, would you like to assign one to it? [y/n] "
                        yesorno
                        retcode=$?
                        if [ "${retcode}" = "1" ]; then
                                printf "PHY ${MISSING_INTERFACE} will remain lost.\n"
                        elif [ "${retcode}" = "0" ]; then
                                PHYDEV=${MISSING_INTERFACE}
                                findFreeInterface monitor
                        fi
                fi
        done
                                #add some spacing so this doesn't make the display hard to read
                                printf "\n"
}

findFreeInterface() {
        if [ -z "${1}" ]; then
                printf "findFreeInterface needs a target mode.\n"
                exit 1
        fi
        if [ "${1}" != "monitor" ] && [ "${1}" != "station" ]; then
                printf "findFreeInterface only supports monitor and station for target mode.\n"
                exit 1
        fi
        target_mode="${1}"
        if [ "$target_mode" = "monitor" ]; then
                target_suffix="mon"
                target_type="803"
        else
                target_suffix=""
                target_type="1"
        fi
        for i in $(seq 0 100); do
                if [ "$i" = "100" ]; then
                        printf "\n\tUnable to find a free name between wlan0 and wlan99, you are on your own from here.\n"
                        return 1
                fi
                if [ "$DEBUG" = "1" ]; then
                        printf "\nChecking candidate wlan${i}\n"
                fi
                if [ ! -e /sys/class/net/wlan${i} ]; then
                        if [ "$DEBUG" = "1" ]; then
                                printf "\nCandidate wlan${i} is not in use\n"
                        fi
                        if [ ! -e /sys/class/net/wlan${i}mon ]; then
                                if [ "$DEBUG" = "1" ]; then
                                        printf "\nCandidate wlan${i} and wlan${i}mon are both clear, creating wlan${i}${target_suffix}\n"
                                fi
                                IW_ERROR="$(iw phy ${PHYDEV} interface add wlan${i}${target_suffix} type ${target_mode} 2>&1)"
                                if [ -z "${IW_ERROR}" ]; then
                                        if [ -d /sys/class/ieee80211/${PHYDEV}/device/net ]; then
                                                for j in $(ls /sys/class/ieee80211/${PHYDEV}/device/net/); do
                                                        if [ "$(cat /sys/class/ieee80211/${PHYDEV}/device/net/${j}/type)" = "${target_type}" ]; then
                                                                #here is where we catch udev renaming our interface
                                                                k=${j#wlan}
                                                                i=${k%mon}
                                                        fi
                                                done
                                        else
                                                printf "Unable to create wlan${i}${target_suffix} and no error recieved.\n"
                                                return 1
                                        fi
                                        printf "\n\t\t(mac80211 ${target_mode} mode vif enabled on [${PHYDEV}]wlan${i}${target_suffix}\n"
                                        unset IW_ERROR
                                        break
                                else
                                        printf "\n\n ERROR adding ${target_mode} mode interface: ${IW_ERROR}\n"
                                        break
                                fi
                        else
                                if [ "$DEBUG" = "1" ]; then
                                        printf "\nCandidate wlan${i} does not exist, but wlan${i}mon does, skipping...\n"
                                fi
                        fi
                else
                        if [ "$DEBUG" = "1" ]; then
                                printf "\nCandidate wlan${i} is in use already.\n"
                        fi
                fi
        done
}

rfkill_check() {
        #take phy and check blocks
        if [ "${RFKILL}" = 0 ]; then
                #immediatly return if rfkill isn't supported
                return 0
        fi
        if [ -z "${1}" ]; then
                printf "Fatal, rfkill_check requires a phy to be passed in\n"
                exit 1
        fi
        #first we have to find the rfkill index
        #this is available as /sys/class/net/wlan0/phy80211/rfkill## but that's a bit difficult to parse
        index="$(rfkill list | grep ${1} | awk -F: '{print $1}')"
        if [ -z "$index" ]; then
                return 187
        fi
        rfkill_status="$(rfkill list ${index} 2>&1)"
        if [ $? != 0 ]; then
                printf "rfkill error: ${rfkill_status}\n"
                return 187
        elif [ -z "${rfkill_status}" ]; then
                printf "rfkill had no output, something went wrong.\n"
                exit 1
        else
                soft=$(printf "${rfkill_status}" | grep -i soft | awk '{print $3}')
                hard=$(printf "${rfkill_status}" | grep -i hard | awk '{print $3}')
                if [ "${soft}" = "yes" ] && [ "${hard}" = "no" ]; then
                        return 1
                elif [ "${soft}" = "no" ] && [ "${hard}" = "yes" ]; then
                        return 2
                elif [ "${soft}" = "yes" ] && [ "${hard}" = "yes" ]; then
                        return 3
                fi
        fi
        return 0
}

rfkill_unblock() {
        #attempt unblock and CHECK SUCCESS
        if [ "${RFKILL}" = 0 ]; then
                #immediatly return if rfkill isn't supported
                return 0
        fi
        rfkill_status="$(rfkill unblock ${1#phy} 2>&1)"
        if [ $? != 0 ]; then
                printf "rfkill error: ${rfkill_status}\n"
                printf "Unable to unblock.\n"
                return 1
        else
                sleep 1
                return 0
        fi
}

setLink() {
        if [ -x "$(command -v ip 2>&1)" ]; then
                ip link set dev ${1} ${2} > /dev/null 2>&1 || printf "\nFailed to set ${1} ${2} using ip\n"
        elif [ -x "$(command -v ifconfig 2>&1)" ]; then
                ifconfig ${1} ${2} > /dev/null 2>&1 || printf "\nFailed to set ${1} ${2} using ifconfig\n"
        fi
        return
}

ifaceIsUp() {
        if [ -x "$(command -v ip 2>&1)" ]; then
                ifaceIsUpCmd="ip link show dev"
        elif [ -x "$(command -v ifconfig 2>&1)" ]; then
                ifaceIsUpCmd="ifconfig"
        fi
        if ${ifaceIsUpCmd} ${1} 2>&1 | grep -q UP
        then
                return
        else
                return 1
        fi
}

#listIfaceUnspec() {
#       if [ -x "$(command -v ip 2>&1)" ]; then
#               ip link 2>/dev/null | awk -F"[: ]+" '/UNSPEC/ {print $2}'
#       elif [ -x "$(command -v ifconfig 2>&1)" ]; then
#               ifconfig -a 2>/dev/null | awk -F"[: ]+" '/UNSPEC/ {print $1}'
#       fi
#}

#startDeprecatedIface() {
#       iwconfig ${1} mode monitor > /dev/null 2>&1
#       if [ -n "${2}" ]; then
#               if [ ${2} -lt 1000 ]; then
#                       iwconfig ${1} channel ${2} > /dev/null 2>&1
#               else
#                       iwconfig ${1} freq ${2}000000 > /dev/null 2>&1
#               fi
#       else
#               iwconfig ${1} channel ${CH} > /dev/null 2>&1
#       fi
#       iwconfig ${1} key off > /dev/null 2>&1
#       setLink ${1} up
#       printf " (monitor mode enabled)"
#}

yesorno() {
        read input
        case $input in
                y) return 0 ;;
                yes) return 0 ;;
                n) return 1 ;;
                no) return 1 ;;
                *) printf "\nInvalid input. Yes, or no? [y/n] "
                   yesorno;;
        esac
}

startMac80211Iface() {
        #check if rfkill is set and cry if it is
        rfkill_check ${PHYDEV}
        rfkill_retcode="$?"
        case ${rfkill_retcode} in
                1) printf "\t${1} is soft blocked, please run \"rfkill unblock ${1#phy}\" to use this interface.\n" ;;
                2) printf "\t${1} is hard blocked, please flip the hardware wifi switch to on.\n"
                   printf "\tIt may also be possible to unblock with \"rfkill unblock ${1#phy}\"\n"
                   if [ "${checkvm_status}" != "run" ]; then
                        checkvm
                   fi
                   if [ -n "${vm}" ]; then
                        printf "Detected VM using ${vm_from}\n"
                        printf "This appears to be a ${vm} Virtual Machine\n"
                        printf "Some distributions have bugs causing rfkill hard block to be forced on in a VM.\n"
                        printf "If toggling the rfkill hardware switch and \"rfkill unblock ${1#phy}\" both fail\n"
                        printf "to fix this, please try not running in a VM.\n"
                   fi
                   ;;
                3) printf "\t${1} is hard and soft blocked, please flip the hardware wifi switch to on.\n"
                   printf "\tIt may also be needed to unblock with \"rfkill unblock ${1#phy}\"\n" ;;
        esac
        if [ "${rfkill_retcode}" != 0 ]; then
                printf "rfkill error, unable to start ${1}\n\n"
                printf "Would you like to try and automatically resolve this? [y/n] "
                yesorno
                retcode="$?"
                if [ "${retcode}" = "1" ]; then
                        return 1
                elif [ "${retcode}" = "0" ]; then
                        rfkill_unblock ${PHYDEV}
                fi
        fi
        #check if $1 already has a mon interface on the same phy and bail if it does
        if [ -d /sys/class/ieee80211/${PHYDEV}/device/net ]; then
                for i in $(ls /sys/class/ieee80211/${PHYDEV}/device/net/); do
                        if [ "$(cat /sys/class/ieee80211/${PHYDEV}/device/net/${i}/type)" = "803" ]; then
                                setChannelMac80211 ${i}
                                printf "\n\t\t(mac80211 monitor mode already enabled for [${PHYDEV}]${1} on [${PHYDEV}]${i})\n"
                                exit
                        fi
                done
        fi
        #we didn't bail means we need a monitor interface
        if [ ${#1} -gt 12 ]; then
                printf "Interface ${#1}mon is too long for linux so it will be renamed to the old style (wlan#) name.\n"
                findFreeInterface monitor
        else
                if [ -e /sys/class/net/${1}mon ]; then
                        printf "\nYou already have a ${1}mon device but it is NOT in monitor mode."
                        printf "\nWhatever you did, don't do it again."
                        printf "\nPlease run \"iw ${1}mon del\" before attempting to continue\n"
                        exit 1
                fi
                #we didn't bail means our target interface is available
                setLink ${1} down
                IW_ERROR="$(iw phy ${PHYDEV} interface add ${1}mon type monitor 2>&1)"
                if [ -z "${IW_ERROR}" ]; then
                        sleep 1
                        if [ "$(cat /sys/class/ieee80211/${PHYDEV}/device/net/${1}mon/type)" = "803" ]; then
                                setChannelMac80211 ${1}mon
                        else
                                printf "\nNewly created monitor mode interface ${1}mon is *NOT* in monitor mode.\n"
                                printf "Removing non-monitor ${1}mon interface...\n"
                                stopMac80211Iface ${1}mon abort
                                exit 1
                        fi
                        printf "\n\t\t(mac80211 monitor mode vif enabled for [${PHYDEV}]${1} on [${PHYDEV}]${1}mon)\n"
                else
                        printf "\n\nERROR adding monitor mode interface: ${IW_ERROR}\n"
                        exit 1
                fi
        fi
        if [ "${ELITE}" = "1" ]; then
                #check if $1 is still down, warn if not
                if ifaceIsUp ${1}
                then
                        printf "\nInterface ${1} is up, but it should be down. Something is interferring."
                        printf "\nPlease run \"airmon-ng check kill\" and/or kill your network manager."
                fi
        else
                iw ${1} del
                printf "\t\t(mac80211 station mode vif disabled for [${PHYDEV}]${1})\n"
        fi
}

startwlIface() {
        if [ -f "/proc/brcm_monitor0" ]; then
                if [ -r "/proc/brcm_monitor0" ]; then
                        local brcm_monitor="$(cat /proc/brcm_monitor0)"
                        if [ "$brcm_monitor" = "1" ]; then
                                printf "\n\t\t(experimental wl monitor mode vif already enabled for [${PHYDEV}]${1} on [${PHYDEV}]prism0)\n"
                                return 0
                        fi
                fi
                if [ -w "/proc/brcm_monitor0" ]; then
                        printf "1" > /proc/brcm_monitor0
                        if [ "$?" = "0" ]; then
                                printf "\n\t\t(experimental wl monitor mode vif enabled for [${PHYDEV}]${1} on [${PHYDEV}]prism0)\n"
                        else
                                printf "\n\t\t(failed to enable experimental wl monitor mode for [${PHYDEV}${1})\n"
                        fi
                else
                        printf "\n\tUnable to write to /proc/brcm_monitor0, cannot enable monitor mode.\n"
                fi
        else
                printf "\n\tThis version of wl does not appear to suport monitor mode.\n"
        fi
}

#startDarwinIface() {
#       if [ -x /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport ]; then
#               if [ -n "${CH}" ] && [ ${CH} -lt 220 ]; then
#                       /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport $1 sniff ${CH}
#               else
#                       printf "Channel is set to none channel value of ${CH}
#               fi
#       fi
#}

setChannelMac80211() {
        setLink ${1} up
        if [ -n "${CH}" ]; then
                if [ ${CH} -lt 1000 ]; then
                        #mac80211 specific check to see if hardware supports the channel number being assigned (requires grep with pcre)
                        if [ -r "/sys/class/net/$1/phy80211/name" ]; then
                                channel_list="$(iw phy $(cat /sys/class/net/$1/phy80211/name) info 2>&1 | grep -oP '\[\K[^\]]+')"
                                local hardware_valid_channel=1
                                for i in $channel_list; do
                                        if [ "${CH}" = "${i}" ]; then
                                                hardware_valid_channel=0
                                                break
                                        fi
                                done
                                if [ "${hardware_valid_channel}" = "1" ]; then
                                        printf "Channel ${CH} does not appear to be supported by ${1} hardware, defaulting to channel 3.\n\n"
                                        CH=3
                                fi
                        fi
                        IW_ERROR="$(iw dev ${1} set channel ${CH} 2>&1)"
                else
                        #mac80211 specific check to see if hardware supports the frequency number being assigned (requires grep with pcre)
                        if [ -r "/sys/class/net/$1/phy80211/name" ]; then
                                frequency_list="$(iw phy $(cat /sys/class/net/$1/phy80211/name) info 2>&1 | grep -oP '\*\ \K[\d]+\ ')"
                                local hardware_valid_freq=1
                                for i in $frequency_list; do
                                        if [ "${CH}" = "${i}" ]; then
                                                hardware_valid_freq=0
                                                break
                                        fi
                                        print
                                done
                                if [ "${hardware_valid_freq}" = "1" ]; then
                                        printf "Frequency ${CH} does not appear to be supported by ${1} hardware, defaulting to 2422 Mhz.\n\n"
                                        CH="2422"
                                fi
                        fi
                        IW_ERROR="$(iw dev ${1} set freq "${CH}" 2>&1)"
                fi
        else
                printf "CH is unset, this should not be possible.\n"
                exit 1
        fi
        if [ -n "${IW_ERROR}" ]; then
                printf "\nError setting channel: ${IW_ERROR}\n"
                if printf "${IW_ERROR}" | grep -q "(-16)"; then
                        printf "Error -16 likely means your card was set back to station mode by something.\n"
                        printf "Removing non-monitor ${1} interface...\n"
                        stopMac80211Iface "${1}" abort
                        exit 1
                fi
                if printf "${IW_ERROR}" | grep -q "(-22)"; then
                        printf "Unable to set channel/frequency ${CH}, most likely it is outside of regulatory domain\n\n"
                fi
        fi
}

#stopDeprecatedIface() {
#       setLink $1 down
#       iwconfig $1 mode Managed > /dev/null 2>&1
#       setLink $1 up
#       printf " (monitor mode disabled)"
#}

stopMac80211Iface() {
        if [ -f /sys/class/net/${1}/type ]; then
                if [ "${2}" != "abort" ] && [ "$(cat /sys/class/net/${1}/type)" != "803" ]; then
                        printf "\n\nYou are trying to stop a device that isn't in monitor mode.\n"
                        printf "Doing so is a terrible idea, if you really want to do it then you\n"
                        printf "need to type 'iw ${1} del' yourself since it is a terrible idea.\n"
                        printf "Most likely you want to remove an interface called wlan[0-9]mon\n"
                        printf "If you feel you have reached this warning in error,\n"
                        printf "please report it.\n"
                        exit 1
                else
                        if [ "${ELITE}" = "0" ]; then
                                local need_sta=1
                                if [ -d /sys/class/ieee80211/${PHYDEV}/device/net ]; then
                                        for i in $(ls /sys/class/ieee80211/${PHYDEV}/device/net/); do
                                                if [ "$(cat /sys/class/ieee80211/${PHYDEV}/device/net/${i}/type)" = "1" ]; then
                                                        [ "${2}" != "abort" ] && printf "\n\t\t(mac80211 station mode vif already available for [${PHYDEV}]${1} on [${PHYDEV}]${i})\n"
                                                        need_sta=0
                                                fi
                                        done
                                fi
                                if [ "${need_sta}" = "1" ] && [ -e /sys/class/net/${1%mon}/phy80211/name ]; then
                                        if [ "$(cat /sys/class/net/${1%mon}/phy80211/name)" = "${PHYDEV}" ]; then
                                                printf "\nYou already have a ${1%mon} device but it is NOT in station mode."
                                                printf "\nWhatever you did, don't do it again."
                                                printf "\nPlease run \"iw ${1%mon} del\" before attempting to continue\n"
                                                exit 1
                                        else
                                                printf "\nYou already have a ${1%mon} device, but is is not on the same phy as ${1}.\n"
                                                printf "\nAttemping to pick a new name...\n"
                                                findFreeInterface station
                                        fi
                                fi
                                if [ "${need_sta}" = "1" ]; then
                                        IW_ERROR="$(iw phy ${PHYDEV} interface add ${1%mon} type station 2>&1)"
                                        if [ -z "${IW_ERROR}" ]; then
                                                interface="${1%mon}"
                                                if [ -d /sys/class/ieee80211/${PHYDEV}/device/net ]; then
                                                        for i in $(ls /sys/class/ieee80211/${PHYDEV}/device/net/); do
                                                                if [ "$(cat /sys/class/ieee80211/${PHYDEV}/device/net/${i}/type)" = "1" ]; then
                                                                        #here is where we catch udev renaming our interface
                                                                        interface="${i}"
                                                                fi
                                                        done
                                                fi
                                                printf "\n\t\t(mac80211 station mode vif enabled on [${PHYDEV}]${interface})\n"
                                        else
                                                printf "\n\n ERROR adding station mode interface: ${IW_ERROR}\n"
                                        fi
                                fi
                        fi
                        setLink ${1} down
                        IW_ERROR="$(iw dev "${1}" del 2>&1 | grep "nl80211 not found")"
                        if [ -z "$IW_ERROR" ]; then
                                if [ "${2}" != "abort" ]; then
                                        printf "\n\t\t(mac80211 monitor mode vif disabled for [${PHYDEV}]${1})\n"
                                elif [ "${2}" = "abort" ]; then
                                        printf "\nWARNING: unable to start monitor mode, please run \"airmon-ng check kill\"\n"
                                fi
                        else
                                if [ -f /sys/class/ieee80211/${PHYDEV}/remove_iface ]; then
                                        printf "${1}" > /sys/class/ieee80211/${PHYDEV}/remove_iface
                                        printf "\n\t\t(mac80211 monitor mode vif disabled for [${PHYDEV}]${1})\n"
                                else
                                        printf "\n\nERROR: Neither the sysfs interface links nor the iw command is available.\nPlease download and install iw from\n$IW_SOURCE\n"
                                fi
                        fi
                fi
        fi
}

stopwlIface() {
        if [ -f "/proc/brcm_monitor0" ]; then
                if [ -r "/proc/brcm_monitor0" ]; then
                        local brcm_monitor="$(cat /proc/brcm_monitor0)"
                        if [ "$brcm_monitor" = "0" ]; then
                                printf "\n\t\t(experimental wl monitor mode vif already disabled for [${PHYDEV}]${1})\n"
                                return 0
                        fi
                fi
                if [ -w "/proc/brcm_monitor0" ]; then
                        printf "0" > /proc/brcm_monitor0
                        if [ "$?" = "0" ]; then
                                printf "\n\t\t(experimental wl monitor mode vif disabled for [${PHYDEV}]${1})\n"
                        else
                                printf "\n\t\t(failed to disable experimental wl monitor mode for [${PHYDEV}${1})\n"
                        fi
                else
                        printf "\n\tUnable to write to /proc/brcm_monitor0, cannot disable monitor mode.\n"
                fi
        else
                printf "\n\tThis version of wl does not appear to suport monitor mode.\n"
        fi
}

getDriver() {
        #standard detection path, this is all that is needed for proper drivers
        #DRIVER=$(printf "$ethtool_output" | awk '/driver/ {print $2}')

        #if $(modinfo -n ${DRIVER} > /dev/null 2>&1)
        #then
        #       true
        #else
        #       unset DRIVER
        #fi

        #if [ "$DRIVER" = "" ]
        #then
                if [ -f /sys/class/net/$1/device/uevent ]; then
                        DRIVER="$(awk -F'=' '$1 == "DRIVER" {print $2}' /sys/class/net/$1/device/uevent)"
                else
                        #DRIVER we put SOMETHING in DRIVER here if we are unable to find anything real
                        DRIVER="??????"
                fi
        #fi

        #here we test for driver usb, ath9k_htc,rt2870, possibly others show this
        if [ "$DRIVER" = "usb" ]; then
                printf "Warn ON: USB\n"
                BUSADDR="$(printf "$ethtool_output" | awk '/bus-info/ {print $2}'):1.0"

                if [ "$DEBUG" = "1" ];  then
                        printf "${BUSADDR}\n"
                fi

                if [ -n "$BUSADDR" ]; then
                        if [ -f /sys/class/net/$1/device/"$BUSADDR"/uevent ]; then
                                DRIVER="$(awk -F'=' '$1 == "DRIVER" {print $2}' /sys/class/net/$1/device/$BUSADDR/uevent)"
                        fi
                fi

                #here we can normalize driver names we don't like
                if [ "$DRIVER" = "rt2870" ]; then
                        DRIVER="rt2870sta"
                fi
                if [ -f /sys/class/net/$1/device/idProduct ]; then
                        if [ "$(cat /sys/class/net/$1/device/idProduct)" = "3070" ]; then
                                DRIVER="rt3070sta"
                        fi
                fi
        fi
        if [ "$DRIVER" = "rtl8187L" ]; then
                DRIVER="r8187l"
        fi
        if [ "$DRIVER" = "rtl8187" ] && [ "$STACK" = "ieee80211" ]; then
                DRIVER="r8187"
        fi

        #Here we will catch the broken lying drivers not caught above
        #currently this only functions for pci devices and not usb since lsusb has no -k option
        if [ "${MODINFO}" = "1" ]; then
                if $(modinfo -n $DRIVER  > /dev/null 2>&1)
                then
                        true
                else
                        if [ -n "${DEVICEID}" ] && [ "$BUS" = "pci" ]; then
                                DRIVER="$(lspci -d $DEVICEID -k | awk '/modules/ {print $3}')"
                        fi
                        if [ -n "$DRIVER" ]; then
                                DRIVER="??????"
                        fi
                fi
        fi
        if [ "$DEBUG" = "1" ]; then
                printf "getdriver() $DRIVER\n"
        fi
}

getFrom() {
        #from detection
        FROM="K"
        if [ "${MODINFO}" = "1" ] && [ -f /proc/modules ]; then
                if modinfo -n $DRIVER 2>&1 | grep -q 'kernel/drivers'
                then
                        FROM="K"
                        #we add special handling here because we hate the vendor drivers AND they install in the wrong place
                        if [ "$DRIVER" = "r8187" ]; then
                                FROM="V"
                        elif [ "$DRIVER" = "r8187l" ]; then
                                FROM="V"
                        elif [ "$DRIVER" = "rt5390sta" ]; then
                                FROM="V"
                        fi
                elif modinfo -n $DRIVER 2>&1 | grep -q 'updates/drivers'
                then
                        FROM="C"
                elif modinfo -n $DRIVER 2>&1 | grep -q misc
                then
                        FROM="V"
                elif modinfo -n $DRIVER 2>&1 | grep -q staging
                then
                        FROM="S"
                else
                        FROM="?"
                fi
        else
                FROM="K"
        fi
        if [ "$DEBUG" = "1" ]; then
                printf "getFrom() $FROM\n"
        fi
}

getFirmware() {
        FIRMWARE="$(printf "$ethtool_output" | awk '/firmware-version/ {print $2}')"
        #ath9k_htc firmware is a shorter version number than most so trap and make it pretty
        if [ "$DRIVER" = "ath9k_htc" ]; then
                FIRMWARE="$FIRMWARE\t"
        fi

        if [ "$FIRMWARE" = "N/A" ]; then
                FIRMWARE="$FIRMWARE\t"
        elif [ -z "$FIRMWARE" ]; then
                FIRMWARE="unavailable"
        fi

        if [ "$DEBUG" = "1" ]; then
                printf "getFirmware $FIRMWARE\n"
        fi
}

getChipset() {
        #this needs cleanup, we shouldn't have multiple lines assigning chipset per bus
        #fix this to be one line per bus
        if [ -f /sys/class/net/$1/device/modalias ]; then
                BUS="$(cut -d ":" -f 1 /sys/class/net/$1/device/modalias)"
                if [ "$BUS" = "usb" ]; then
                        if [ "${LSUSB}" = "1" ]; then
                                BUSINFO="$(cut -d ":" -f 2 /sys/class/net/$1/device/modalias | cut -b 1-10 | sed 's/^.//;s/p/:/')"
                                CHIPSET="$(lsusb -d "$BUSINFO" | head -n1 - | cut -f3- -d ":" | sed 's/^....//;s/ Network Connection//g;s/ Wireless Adapter//g;s/^ //')"
                        elif [ "${LSUSB}" = "0" ]; then
                                printf "Your system doesn't seem to support usb but we found usb hardware, please report this.\n"
                                exit 1
                        fi
                #yes the below line looks insane, but broadcom appears to define all the internal buses so we have to detect them here
                elif [ "${BUS}" = "pci" -o "${BUS}" = "pcmcia" ] && [ "${LSPCI}" = "1" ]; then
                        if [ -f /sys/class/net/$1/device/vendor ] && [ -f /sys/class/net/$1/device/device ]; then
                                DEVICEID="$(cat /sys/class/net/$1/device/vendor):$(cat /sys/class/net/$1/device/device)"
                                CHIPSET="$(lspci -d $DEVICEID | cut -f3- -d ":" | sed 's/Wireless LAN Controller //g;s/ Network Connection//g;s/ Wireless Adapter//;s/^ //')"
                        else
                                BUSINFO="$(printf "$ethtool_output" | grep bus-info | cut -d ":" -f "3-" | sed 's/^ //')"
                                CHIPSET="$(lspci | grep "$BUSINFO" | head -n1 - | cut -f3- -d ":" | sed 's/Wireless LAN Controller //g;s/ Network Connection//g;s/ Wireless Adapter//;s/^ //')"
                                DEVICEID="$(lspci -nn | grep "$BUSINFO" | grep '[[0-9][0-9][0-9][0-9]:[0-9][0-9][0-9][0-9]' -o)"
                        fi
                elif [ "${BUS}" = "sdio" ]; then
                        if [ -f /sys/class/net/$1/device/vendor ] && [ -f /sys/class/net/$1/device/device ]; then
                                DEVICEID="$(cat /sys/class/net/$1/device/vendor):$(cat /sys/class/net/$1/device/device)"
                        fi
                        if [ "${DEVICEID}" = '0x02d0:0x4330' ]; then
                                CHIPSET='Broadcom 4330'
                        elif [ "${DEVICEID}" = '0x02d0:0x4329' ]; then
                                CHIPSET='Broadcom 4329'
                        elif [ "${DEVICEID}" = '0x02d0:0x4334' ]; then
                                CHIPSET='Broadcom 4334'
                        elif [ "${DEVICEID}" = '0x02d0:0xa94c' ]; then
                                CHIPSET='Broadcom 43340'
                        elif [ "${DEVICEID}" = '0x02d0:0xa94d' ]; then
                                CHIPSET='Broadcom 43341'
                        elif [ "${DEVICEID}" = '0x02d0:0x4324' ]; then
                                CHIPSET='Broadcom 43241'
                        elif [ "${DEVICEID}" = '0x02d0:0x4335' ]; then
                                CHIPSET='Broadcom 4335/4339'
                        elif [ "${DEVICEID}" = '0x02d0:0xa962' ]; then
                                CHIPSET='Broadcom 43362'
                        elif [ "${DEVICEID}" = '0x02d0:0xa9a6' ]; then
                                CHIPSET='Broadcom 43430'
                        elif [ "${DEVICEID}" = '0x02d0:0x4345' ]; then
                                CHIPSET='Broadcom 43455'
                        elif [ "${DEVICEID}" = '0x02d0:0x4354' ]; then
                                CHIPSET='Broadcom 4354'
                        elif [ "${DEVICEID}" = '0x02d0:0xa887' ]; then
                                CHIPSET='Broadcom 43143'
                        else
                                CHIPSET="unable to detect for sdio $DEVICEID"
                        fi
                else
                        CHIPSET="Not pci, usb, or sdio"
                fi
        #we don't do a check for usb here but it is obviously only going to work for usb
        elif [ -f /sys/class/net/$1/device/idVendor ] && [ -f /sys/class/net/$1/device/idProduct ]; then
                DEVICEID="$(cat /sys/class/net/$1/device/idVendor):$(cat /sys/class/net/$1/device/idProduct)"
                if [ "${LSUSB}" = "1" ]; then
                        CHIPSET="$(lsusb | grep -i "$DEVICEID" | head -n1 - | cut -f3- -d ":" | sed 's/^....//;s/ Network Connection//g;s/ Wireless Adapter//g;s/^ //')"
                elif [ "${LSUSB}" = "0" ]; then
                        CHIPSET="idVendor and idProduct found on non-usb device, please report this."
                fi
        elif [ "${DRIVER}" = "mac80211_hwsim" ]; then
                CHIPSET="Software simulator of 802.11 radio(s) for mac80211"
        elif $(printf "$ethtool_output" | awk '/bus-info/ {print $2}' | grep -q bcma)
        then
                BUS="bcma"

                if [ "${DRIVER}" = "brcmsmac" ] || [ "${DRIVER}" = "brcmfmac" ] || [ "${DRIVER}" = "b43" ]; then
                        CHIPSET="Broadcom on bcma bus, information limited"
                else
                        CHIPSET="Unrecognized driver \"${DRIVER}\" on bcma bus"
                fi
        else
                CHIPSET="non-mac80211 device? (report this!)"
        fi

        if [ "$DEBUG" = "1" ]; then
                printf "getchipset() $CHIPSET\n"
                printf "BUS = $BUS\n"
                printf "BUSINFO = $BUSINFO\n"
                printf "DEVICEID = $DEVICEID\n"
        fi
}

getStack() {
        if [ -z "$1" ]; then
                return
        fi

        if [ -d /sys/class/net/$1/phy80211/ ]; then
                MAC80211="1"
                STACK="mac80211"
        else
                MAC80211="0"
                STACK="ieee80211"
        fi

        if [ -e /proc/sys/dev/$1/fftxqmin ]; then
                MAC80211="0"
                STACK="net80211"
        fi

        if [ "$DEBUG" = "1" ]; then
                printf "getStack $STACK\n"
        fi
}

getExtendedInfo() {
        #stuff rfkill info into extended if nothing else is there
        rfkill_check ${PHYDEV}
        rfkill_retcode="$?"
        if [ "${rfkill_retcode}" = "1" ]; then
                EXTENDED="rfkill soft blocked"
        elif [ "${rfkill_retcode}" = "2" ]; then
                EXTENDED="rfkill hard blocked"
        elif [ "${rfkill_redcode}" = "3" ]; then
                EXTENDED="rfkill hard and soft blocked"
        fi

        if [ "$DRIVER" = "??????" ]; then
                EXTENDED="\t Failure detecting driver properly please report"
        fi

        #first we set all the real (useful) info we can find
        if [ -f /sys/class/net/$1/device/product ]; then
                EXTENDED="\t$(cat /sys/class/net/$1/device/product)"
        fi

        #then we sweep for known broken drivers with no available better drivers
        if [ "$DRIVER" = "wl" ]; then
                if [ -f "/proc/brcm_monitor0" ]; then
                        EXTENDED="Experimental monitor mode support"
                else
                        EXTENDED="No known monitor support, try a newer version or b43"
                fi
        fi
        if [ "$DRIVER" = "brcmsmac" ]; then
                EXTENDED="Driver commonly referred to as brcm80211 (no injection yet)"
        fi
        if [ "$DRIVER" = "r8712u" ]; then
                EXTENDED="\t\t\t\tNo monitor or injection support"
        fi

        #lastly we detect all the broken drivers which have working alternatives
        KV="$(uname -r | awk -F'-' '{print $1}')"
        KVMAJOR="$(printf ${KV} | awk -F'.' '{print $1$2}')"
        KVMINOR="$(printf ${KV} | awk -F'.' '{print $3}')"

        if [ $KVMAJOR -lt 26 ]; then
                printf "You are running a kernel older than 2.6, I'm surprised it didn't error before now."
                if [ "$DEBUG" = "1" ]; then
                        printf "${KVMAJOR} ${KVMINOR}\n"
                fi
                exit 1
        fi

        if [ "$DRIVER" = "rt2870sta" ]; then
                if [ "$KVMAJOR" = "26" ] && [ "$KVMINOR" -ge "35" ]; then
                        EXTENDED="\tBlacklist rt2870sta and use rt2800usb"
                else
                        EXTENDED="\tUpgrade to kernel 2.6.35 or install compat-wireless stable"
                fi
                #add in a flag for "did you tell use to do X" and emit instructions
        elif [ "$DRIVER" = "rt3070sta" ]; then
                if [ "$KVMAJOR" = "26" ] && [ "$KVMINOR" -ge "35" ]; then
                        EXTENDED="\tBlacklist rt3070sta and use rt2800usb"
                else
                        EXTENDED="\tUpgrade to kernel 2.6.35 or install compat-wireless stable"
                fi
        elif [ "$DRIVER" = "rt5390sta" ]; then
                if [ "$KVMAJOR" = "26" ] && [ "$KVMINOR" -ge "39" ]; then
                        EXTENDED="\tBlacklist rt5390sta and use rt2800usb"
                else
                        EXTENDED="\tUpgrade to kernel 2.6.39 or install compat-wireless stable"
                fi
        elif [ "$DRIVER" = "ar9170usb" ]; then
                if [ "$KVMAJOR" = "26" ] && [ "$KVMINOR" -ge "37" ]; then
                        EXTENDED="\tBlacklist ar9170usb and use carl9170"
                else
                        EXTENDED="\tUpgrade to kernel 2.6.37 or install compat-wireless stable"
                fi
        elif [ "$DRIVER" = "arusb_lnx" ]; then
                if [ "$KVMAJOR" = "26" ] && [ "$KVMINOR" -ge "37" ]; then
                        EXTENDED="\tBlacklist arusb_lnx and use carl9170"
                else
                        EXTENDED="\tUpgrade to kernel 2.6.37 or install compat-wireless stable"
                fi
        elif [ "$DRIVER" = "r8187" ]; then
                if [ "$KVMAJOR" = "26" ] && [ "$KVMINOR" -ge "29" ]; then
                        EXTENDED="\t\tBlacklist r8187 and use rtl8187 from the kernel"
                else
                        EXTENDED="\t\tUpgrade to kernel 2.6.29 or install compat-wireless stable"
                fi
        elif [ "$DRIVER" = "r8187l" ]; then
                if [ "$KVMAJOR" = "26" ] && [ "$KVMINOR" -ge "29" ]; then
                        EXTENDED="\t\tBlacklist r8187l and use rtl8187 from the kernel"
                else
                        EXTENDED="\t\tUpgrade to kernel 2.6.29 or install compat-wireless stable"
                fi
        fi
}

scanProcesses() {
        #this test means it errored and said it was busybox since busybox doesn't print without error
        if (ps -A 2>&1 | grep -q BusyBox)
        then
                #busybox in openwrt cannot handle -A but its output by default is -A
                psopts=""
        else
                psopts="-A"
        fi
        if ( ps -o comm= 2>&1 | grep -q BusyBox )
        then
                #busybox in openwrt cannot handle -o
                pso="0"
        else
                pso="1"
        fi

        PROCESSES="wpa_action\|wpa_supplicant\|wpa_cli\|dhclient\|ifplugd\|dhcdbd\|dhcpcd\|udhcpc\|NetworkManager\|knetworkmanager\|avahi-autoipd\|avahi-daemon\|wlassistant\|wifibox"
        #PS_ERROR="invalid\|illegal"

        if [ -x "$(command -v service 2>&1)" ] && [ "$1" = "kill" ]; then
                service network-manager stop 2> /dev/null > /dev/null
                service NetworkManager stop 2> /dev/null > /dev/null
                service avahi-daemon stop 2> /dev/null > /dev/null
        fi

        unset match
        if [ "${pso}" = 1 ]; then
                match="$(ps ${psopts} -o comm= | grep -c ${PROCESSES})"
        elif [ "${pso}" = 0 ]; then
                #openwrt busybox grep hits on itself so we -v it out
                match="$(ps ${psopts} | grep -c ${PROCESSES} | grep -v grep)"
        fi
        if [ ${match} -gt 0 ] && [ "${1}" != "kill" ]; then
                printf "Found $match processes that could cause trouble.\n"
                printf "If airodump-ng, aireplay-ng or airtun-ng stops working after\n"
                printf "a short period of time, you may want to run 'airmon-ng check kill'\n\n"
        else
                if [ "${1}" != "kill" ] && [ -n "${1}" ]; then
                        printf "No interfering processes found\n"
                        return
                fi
        fi

        if [ ${match} -gt 0 ]; then
                if [ "${1}" = "kill" ]; then
                        printf "Killing these processes:\n\n"
                fi
                if [ "${pso}" = "1" ]; then
                        ps ${psopts} -o pid=PID -o comm=Name | grep "${PROCESSES}\|PID"
                else
                        #openwrt busybox grep hits on itself so we -v it out
                        ps ${psopts} | grep "${PROCESSES}\|PID | grep -v grep"
                fi
                if [ "${1}" = "kill" ]; then
                        #we have to use signal 9 because things like nm actually respawn wpa_supplicant too quickly
                        if [ "${pso}" = "1" ]; then
                                for pid in $(ps ${psopts} -o pid= -o comm= | grep ${PROCESSES} | awk '{print $1}'); do
                                        kill -9 ${pid}
                                done
                        else
                                #openwrt busybox grep hits on itself so we -v it out
                                for pid in $(ps ${psopts} | grep ${PROCESSES} | grep -v grep | awk '{print $1}'); do
                                        kill -9 ${pid}
                                done
                        fi
                fi
        fi

        #i=1
        #while [ $i -le $match ]
        #do
        #       pid=$(ps ${psopts} -o pid= -o comm= | grep $PROCESSES | head -n $i | tail -n 1 | awk '{print $1}')
        #       pname=$(ps ${psopts} -o pid= -o comm= | grep $PROCESSES | head -n $i | tail -n 1 | awk '{print $2}')
        #       if [ x"$1" != "xkill" ]
        #       then
        #               printf "${pid}\t${pname}\n"
        #       else
        #               kill ${pid}
        #       fi
        #       i=$(($i+1))
        #done

        printf "\n"

        #this stub is for checking against the interface name, but since it almost never hits why bother?
        #if [ x"${1}" != "x" -a x"${1}" != "xkill" ]
        #then
        #       #the next line doesn't work on busybox ps because -p is unimplimented
        #       match2=$(ps -o comm= -p 1 2>&1 | grep $PS_ERROR -c)
        #       if [ ${match2} -gt 0 ]
        #       then
        #               return
        #       fi
        #
        #       for i in $(ps auxw | grep ${1} | grep -v "grep" | grep -v "airmon-ng" | awk '{print $2}')
        #       do
        #               pname=$(ps -o comm= -p ${i})
        #               printf "Process with PID ${i} ($pname) is running on interface ${1}\n"
        #       done
        #fi
}

listInterfaces() {
        unset iface_list
        for iface in $(ls -1 /sys/class/net)
        do
                if [ -f /sys/class/net/${iface}/uevent ]; then
                        if $(grep -q DEVTYPE=wlan /sys/class/net/${iface}/uevent)
                        then
                                iface_list="${iface_list}\n ${iface}"
                        fi
                fi
        done
        if [ -x "$(command -v iwconfig 2>&1)" ] && [ -x "$(command -v sort 2>&1)" ]; then
                for iface in $(iwconfig 2> /dev/null | sed 's/^\([a-zA-Z0-9_.]*\) .*/\1/'); do
                        iface_list="${iface_list}\n ${iface}"
                done
                iface_list="$(printf "${iface_list}" | sort -bu)"
        fi
}

getPhy() {
        if [ -z "$1" ]; then
                return
        fi

        if [ $MAC80211 = "0" ]; then
                PHYDEV="null"
                return
        fi

        if [ -r /sys/class/net/$1/phy80211/name ]; then
                PHYDEV="$(cat /sys/class/net/$1/phy80211/name)"
        fi
        if [ -d /sys/class/net/$1/phy80211/ ] && [ -z "${PHYDEV}" ]; then

                PHYDEV="$(ls -l "/sys/class/net/$1/phy80211" | sed 's/^.*\/\([a-zA-Z0-9_-]*\)$/\1/')"
        fi
}

checkvm() {
        #this entire section of code is completely stolen from Carlos Perez's work in checkvm.rb for metasploit and rewritten (poorly) in sh
        #Check dmi info
        if [ -x "$(command -v dmidecode 2>&1)" ]; then
                dmi_info=$(dmidecode 2>&1)
                if [ -n "${dmi_info}" ]; then
                        printf "${dmi_info}" | grep -iq "microsoft corporation" 2> /dev/null && vm="MS Hyper-V"
                        printf "${dmi_info}" | grep -iq "vmware" 2> /dev/null && vm="VMware"
                        printf "${dmi_info}" | grep -iq "virtualbox" 2> /dev/null && vm="VirtualBox"
                        printf "${dmi_info}" | grep -iq "qemu" 2> /dev/null && vm="Qemu/KVM"
                        printf "${dmi_info}" | grep -iq "domu" 2> /dev/null && vm="Xen"
                        [ -n "${vm}" ] && vm_from="dmi_info"
                fi
        fi

        #check loaded modules
        if [ -z "${vm_from}" ]; then
                if [ -x "$(command -v lsmod 2>&1)" ]; then
                        lsmod_data="$(lsmod 2>&1)"
                        if [ -n "${lsmod}" ]; then
                                printf "${lsmod_data}" | grep -iqE "vboxsf|vboxguest" 2> /dev/null && vm="VirtualBox"
                                printf "${lsmod_data}" | grep -iqE "vmw_ballon|vmxnet|vmw" 2> /dev/null && vm="VMware"
                                printf "${lsmod_data}" | grep -iqE "xen-vbd|xen-vnif" 2> /dev/null && vm="Xen"
                                printf "${lsmod_data}" | grep -iqE "virtio_pci|virtio_net" 2> /dev/null && vm="Qemu/KVM"
                                printf "${lsmod_data}" | grep -iqE "hv_vmbus|hv_blkvsc|hv_netvsc|hv_utils|hv_storvsc" && vm="MS Hyper-V"
                                [ -n "${vm}" ] && vm_from="lsmod"
                        fi
                fi
        fi

        #check scsi driver
        if [ -z "${vm_from}" ]; then
                if [ -r /proc/scsi/scsi ]; then
                        grep -iq "vmware" /proc/scsi/scsi 2> /dev/null && vm="VMware"
                        grep -iq "vbox" /proc/scsi/scsi 2> /dev/null && vm="VirtualBox"
                        [ -n "${vm}" ] && vm_from="/pro/scsi/scsi"
                fi
        fi

        # Check IDE Devices
        if [ -z "${vm_from}" ]; then
                if [ -d /proc/ide ]; then
                        ide_model="$(cat /proc/ide/hd*/model)"
                        printf "${ide_model}" | grep -iq "vbox" 2> /dev/null && vm="VirtualBox"
                        printf "${ide_model}" | grep -iq "vmware" 2> /dev/null && vm="VMware"
                        printf "${ide_model}" | grep -iq "qemu" 2> /dev/null && vm="Qemu/KVM"
                        printf "${ide_model}" | grep -iqE "virtual (hd|cd)" 2> /dev/null && vm="Hyper-V/Virtual PC"
                        [ -n "${vm}" ] && vm_from="ide_model"
                fi
        fi

        # Check using lspci
        if [ -z "${vm_from}" ] && [ "${LSPCI}" = "1" ]; then
                        lspci_data="$(lspci 2>&1)"
                        printf "${lspci_data}" | grep -iq "vmware" 2> /dev/null && vm="VMware"
                        printf "${lspci_data}" | grep -iq "virtualbox" 2> /dev/null && vm="VirtualBox"
                        [ -n "${vm}" ] && vm_from="lspci"
        fi

        # Xen bus check
        ## XXX: Removing unsafe check
        # this check triggers if CONFIG_XEN_PRIVILEGED_GUEST=y et al are set in kconfig (debian default) even in not actually a guest
        #if [ -z ${vm} ]
        #then
        #       ls -1 /sys/bus | grep -iq "xen" 2> /dev/null && vm="Xen"
        #       vm_from="/sys/bus/xen"
        #fi

        # Check using lscpu
        if [ -z "${vm_from}" ]; then
                if [ -x "$(command -v lscpu 2>&1)" ]; then
                        lscpu_data="$(lscpu 2>&1)"
                        printf "${lscpu_data}" | grep -iq "Xen" 2> /dev/null && vm="Xen"
                        printf "${lscpu_data}" | grep -iq "KVM" 2> /dev/null && vm="KVM"
                        printf "${lscpu_data}" | grep -iq "Microsoft" 2> /dev/null && vm="MS Hyper-V"
                        [ -n "${vm}" ] && vm_from="lscpu"
                fi
        fi

        #Check vmnet
        if [ -z "${vm_from}" ]; then
                if [ -e /dev/vmnet ]; then
                        vm="VMware"
                        vm_from="/dev/vmnet"
                fi
        fi

        # Check dmesg Output
        if [ -z "${vm_from}" ]; then
                if [ -x "$(command -v dmesg 2>&1)" ]; then
                        dmesg | grep -iqE "vboxbios|vboxcput|vboxfacp|vboxxsdt|(vbox cd-rom)|(vbox harddisk)" && vm="VirtualBox"
                        dmesg | grep -iqE "(vmware virtual ide)|(vmware pvscsi)|(vmware virtual platform)" && vm="VMware"
                        dmesg | grep -iqE "(xen_mem)|(xen-vbd)" && vm="Xen"
                        dmesg | grep -iqE "(qemu virtual cpu version)" && vm="Qemu/KVM"
                        [ -n "${vm}" ] && vm_from="dmesg"
                fi
        fi
        checkvm_status="run"
}

#end function definitions
#begin execution

#here we check for any phys that have no interfaces to pick up The Lost Phys
handleLostPhys

listInterfaces

if [ "${1}" = "check" ] || [ "${1}" = "start" ]; then
        if [ "${2}" = "kill" ]; then
                #if we are killing, tell scanProcesses that
                scanProcesses "${2}"
                exit
        elif [ "${1}" = "start" ]; then
                #this stub can send scanProcesses the interface name
                #but this seems entirely unreliable so just run generic
                #scanProcesses "${2}"
                scanProcesses
        else
                scanProcesses
                exit
        fi
fi

if [ "$#" != "0" ]; then
        if [ "$1" != "start" ] && [ "$1" != "stop" ]; then
                usage
        fi

        if [ -z "$2" ]; then
                usage
        fi
fi

#startup checks complete, headers then main

if [ "$DEBUG" = "1" ]; then
        if [ -x "$(command -v readlink 2>&1)" ]; then
                printf "/bin/sh -> $(readlink -f /bin/sh)\n"
                if $(readlink -f /bin/sh) --version > /dev/null 2>&1
                then
                        printf "$($(readlink -f /bin/sh) --version)\n"
                fi
        else
                ls -l /bin/sh
                if /bin/sh --version > /dev/null 2>&1
                then
                        /bin/sh --version
                fi
        fi
        if [ -n "$SHELL" ]; then
                if $SHELL --version > /dev/null 2>&1
                then
                        printf "\nSHELL is $($SHELL --version)\n\n"
                else
                        printf "\nSHELL is $SHELL\n\n"
                fi
        fi
fi
if [ "$VERBOSE" = "1" ]; then
        lsb_release -a
        printf "\n"
        uname -a

        checkvm
        if [ -n "${vm}" ]; then
                printf "Detected VM using ${vm_from}\n"
                printf "This appears to be a ${vm} Virtual Machine\n"
                printf "If your system supports VT-d, it may be possible to use PCI devices\n"
                printf "If your system does not support VT-d, you can only use USB wifi cards\n"
        fi

        printf "\nK indicates driver is from $(uname -r)\n"
        if [ "${MODPROBE}" = "1" ]; then
                modprobe compat > /dev/null 2>&1

                if [ -r /sys/module/compat/parameters/compat_version ]; then
                        printf "C indicates driver is from $(cat /sys/module/compat/parameters/compat_version)\n"
                fi
        fi
        printf "V indicates driver comes directly from the vendor, almost certainly a bad thing\n"
        printf "S indicates driver comes from the staging tree, these drivers are meant for reference not actual use, BEWARE\n"
        printf "? indicates we do not know where the driver comes from... report this\n\n"
fi

if [ "${VERBOSE}" = "1" ]; then
        printf "\nX[PHY]Interface\t\tDriver[Stack]-FirmwareRev\t\tChipset\t\t\t\t\t\t\t\t\t\tExtended Info\n\n"
else
        printf "PHY\tInterface\tDriver\t\tChipset\n\n"
fi

#this whole block of code shouldn't be here, it makes no sense
#per shellcheck, this block is broken as it runs the loops once with iface=listIfaceUnspec instead of the output of listIFaceUnspec
#for iface in listIfaceUnspec; do
#
#       if [ -e "/proc/sys/dev/$iface/fftxqmin" ]
#       then
#               setLink ${iface} up
#               printf "$iface\t\tAtheros\t\tmadwifi-ng"
#               if [ x$1 = "xstart" ] && [ x$2 = x$iface ]
#               then
#                       IFACE=$(wlanconfig ath create wlandev $iface wlanmode monitor -bssid | grep ath)
#                       setLink ${iface} up
#                       if [ $CH -lt 1000 ]
#                       then
#                               iwconfig $IFACE channel $CH 2> /dev/null > /dev/null
#                       else
#                               iwconfig $IFACE freq "$CH"000000 2> /dev/null > /dev/null
#                       fi
#               setLink ${IFACE} up
#               UDEV_ISSUE=$?
#               fi
#
#               if [ x$1 = "xstop" ] && [ x$2 = x$iface ]
#               then
#                       printf "$iface does not support 'stop', do it on ath interface\n"
#               fi
#
#               #why, dear god why is there a random newline here?
#               printf "\n"
#               sleep 1
#               continue
#       fi
#done
#end random block of code that needs to die

for iface in $(printf "${iface_list}"); do
        unset ethtool_output DRIVER FROM FIRMWARE STACK MADWIFI MAC80211 BUS BUSADDR BUSINFO DEVICEID CHIPSET EXTENDED PHYDEV ifacet DRIVERt FIELD1 FIELD1t FIELD2 FIELD2t CHIPSETt
        #add a RUNNING check here and up the device if it isn't already
        ethtool_output="$(ethtool -i $iface 2>&1)"
        if [ "$ethtool_output" != "Cannot get driver information: Operation not supported" ]; then
                getStack  ${iface}
                getPhy     ${iface}
                getDriver   ${iface}
                getChipset ${iface}
                if [ "${VERBOSE}" = "1" ]; then
                        getFrom ${iface}
                        getFirmware ${iface}
                        getExtendedInfo ${iface}
                fi
        else
                printf "\nethtool failed...\n"
                printf "Only mac80211 devices on kernel 2.6.33 or higher are officially supported by airmon-ng.\n"
                exit 1
        fi

        #yes this really is the main output loop
        if [ "${VERBOSE}" = "1" ]; then
                #beautify output spacing (within reason)
                FIELD1="${FROM}[${PHYDEV}]${iface}"
                if [ ${#FIELD1} -gt 15 ]; then
                        FIELD1t="\t"
                else
                        FIELD1t="\t\t"
                fi
                FIELD2="${DRIVER}[${STACK}]-${FIRMWARE}"
                if [ ${#FIELD2} -gt 28 ]; then
                        FIELD2t="\t"
                else
                        FIELD2t="\t\t"
                fi
                if [ -n "${EXTENDED}" ]; then
                        CHIPSETt="\t\t\t\t\t\t\t\t\t\t"
                        if [ ${#CHIPSET} -gt 70 ]; then
                                CHIPSETt="\t"
                        elif [ ${#CHIPSET} -gt 63 ]; then
                                CHIPSETt="\t\t"
                        elif [ ${#CHIPSET} -gt 56 ]; then
                                CHIPSETt="\t\t\t"
                        elif [ ${#CHIPSET} -gt 49 ]; then
                                CHIPSETt="\t\t\t\t"
                        elif [ ${#CHIPSET} -gt 39 ]; then
                                CHIPSETt="\t\t\t\t\t"
                        elif [ ${#CHIPSET} -gt 35 ]; then
                                CHIPSETt="\t\t\t\t\t\t"
                        elif [ ${#CHIPSET} -gt 28 ]; then
                                CHIPSETt="\t\t\t\t\t\t\t"
                        elif [ ${#CHIPSET} -gt 21 ]; then
                                CHIPSETt="\t\t\t\t\t\t\t\t"
                        elif [ ${#CHIPSET} -gt 14 ]; then
                                CHIPSETt="\t\t\t\t\t\t\t\t\t"
                        fi
                fi
                printf "${FROM}[${PHYDEV}]${iface}${FIELD1t}${DRIVER}[${STACK}]-${FIRMWARE}${FIELD2t}${CHIPSET}${CHIPSETt}${EXTENDED}\n"
        else
                #beautify output spacing (within reason, interface/driver max length is 15 and phy max length is 7))
                if [ ${#DRIVER} -gt 7 ]; then
                        DRIVERt="\t"
                else
                        DRIVERt="\t\t"
                fi
                if [ ${#iface} -gt 7 ]; then
                        ifacet="\t"
                else
                        ifacet="\t\t"
                fi
                printf "${PHYDEV}\t${iface}${ifacet}${DRIVER}${DRIVERt}${CHIPSET}\n"
        fi

        if [ "$DRIVER" = "wl" ]; then
                if [ "$1" = "start" ] && [ "$2" = "$iface" ]; then
                        startwlIface $iface
                fi
                if [ "$1" = "stop" ] && [ "$2" = "$iface" ]; then
                        stopwlIface $iface
                fi
        elif [ "$MAC80211" = "1" ]; then
                if [ "$1" = "start" ] && [ "$2" = "$iface" ]; then
                        startMac80211Iface $iface
                fi

                if [ "$1" = "stop" ] && [ "$2" = "$iface" ]; then
                        stopMac80211Iface $iface
                fi
        fi
done

#end with some space
printf "\n"