#!/bin/sh





#credits: bobafett vgaetera ...tba










############################################################################## this is how it works...



#####################################################step1 ### enable the logic as a whole
#uci set network.globals.persistent_nic='1'
#uci commit network

######################################################step2 ### for every usb nic
#uci set network.rummy.mac_original='00:00:e8:00:44:bf'
#uci commit network

################################################ update the uci logical interface underlying device eth+last6chars
#uci set network.rummy.device="eth0044bf"
#uci commit network



################# TIPS
### for extra wan interfaces repeat step2...#################################################################3caveats:

### first wan(all usb) need to be added
### NOTE: if you have wan + wan6 only use new device name on wan6 
### i.e. dont put identical mac_original twice (for now... still testing this)

### macaddr in device section will work if using fancy naming(picked up by netifd on rename)
### macaddr in interface section will work (picked up by this script/or os whichever changes first?)

### check /etc/config/sqm and/or /etc/config/luci_statistics(sqm_collectd) if the wan device name needs updating


################# CAVEATS
#no device bridges etc. for now
#usb only







###################################### EXAMPLE config format
#config globals 'globals'
#	option persistent_nic '1'

#config interface 'rummy'
#	option device 'eth0044bf'
#	option mac_original '00:00:e8:00:44:bf'
#	option proto 'dhcp'

#config interface 'wan'
#	option device 'ethdc03bf'
#	option mac_original '00:00:e8:dc:03:bf'
#	option proto 'dhcp'


		







nicmove_enabled() {
	local nmENABLED
	nmENABLED=$(uci -q get network.globals.persistent_nic)
	case "$nmENABLED" in
		1) return 0; ;;
		*) return 1; ;;
	esac
}










uci_nic_find() {

	local FN="uci_nic_find"
	local ucidevONE

	case "${1}" in

		interfaces_all) #<network>.THIS(shortname)
			uci show network | grep '=interface$' | cut -d'.' -f1,2 | cut -d'=' -f1 | cut -d'.' -f2
		;;
		
		ucidev) #takes single word network.WORD.device
			local uciDEVWORD="${2}"
			local ucidevONE=$(uci -q get network.${uciDEVWORD}.device)
		

			if [ -z "$ucidevONE" ]; then
				return 1
			fi

			#CALLEDMANYTIMES
			#echV "$FN> devONE: $ucidevONE" ### echV "${FN}DBG> devONE: $ucidevONE $uciDEVWORD ${*}"


			if ifconfig | grep -E "[a-z]" | awk '{print $1}' | grep -q "${2}"; then
				echV "$FN> rawdevpresent: ${2}"
			fi
			if [ ! -z "$(uci show network | grep 'ports=' | grep "${2}'$")" ]; then
				echV "$FN> THIS HAS A DEVICE SECTION"
			fi #network.@device[0].ports='eth0' #uci show network | grep 'ports=' | grep "'"eth0"'$")
			


			echo "$ucidevONE"


			return 0
		;;
	esac


}












nic_has_interface() {
	
	local lookupMAC="${1}"
	local netdev_CUR="${2}"
	local uciLINE #uciPFX
	local netdev_MATCHES #means all is good AKA dev matches

	local FN="nic_has_interface"



	if [ "$(uci show network | grep 'mac_original=' | wc -l)" -eq 0 ]; then
		echV "$FN> no mac_originals setup" debug; return 1
	fi

	

	if echo "$netdev_CUR" | grep -q '^wlan'; then
		echV "$FN> skipping wifi interface ${netdev_CUR}" debug; return 1
	fi


	echV "$FN> 222 net+add checking for uci+network interface $lookupMAC" debug

	while read uciLINE; do
		[ -z "$uciLINE" ] && continue #echV "uciLINE: $uciLINE"	
		#NOPEALLCALLS [ -n "$EDEBUG" ] && echV "$FN> edebug1wan+wan6check uciline $UCILINE" debug


		if [ ! -z "$(uci -q get network.${uciLINE}.mac_original)" ] && \
			[ "$(uci -q get network.${uciLINE}.mac_original)" = "${lookupMAC}" ]; then

			

			#[ -n "$EDEBUG" ] && echV "$FN> edebug2wan+wan6check uci_find_dev ucidev $(uci_nic_find ucidev "${uciLINE}")"




			if ! uci_nic_find ucidev "${uciLINE}"; then
				echV "${uciLINE} has no .device section" #probably wifi
			elif [ "$(uci_nic_find ucidev "${uciLINE}")" != "$netdev_CUR" ]; then
				echV "devmanagedNOTmatch: uci:$(uci_nic_find ucidev "${uciLINE}") cur:$netdev_CUR" debug
				KICKME="${uciLINE}"			

				if [ ! -z "$(uci -q get network."${uciLINE}".macaddr)" ]; then
					HASMACADDR="${uciLINE}"
					UCIMACADDR="$(uci -q get network."${uciLINE}".macaddr)"
				fi

			else
				netdev_MATCHES=1 #@!> ifdown X; ifup X; if macaddr
			fi



		fi
done <<CCC
$(uci_nic_find interfaces_all)
CCC




if [ ! -z "$netdev_MATCHES" ]; then
	echV "MATCHES: $netdev_MATCHES"; return 0
elif [ ! -z "$KICKME" ]; then
	return 0
fi

return 1

}










kick_a_nic() {
	
	local FN="kick_a_nic"
	local dNAME="${1}"
	local dNAMEto="${2}"



	echV "$FN $1 > $2" msg #echV "$FN $1 > $2" #debug



	###################	echV "hasmac: ${HASMACADDR}" WHEN CHANGE TO STATIC DID NOT APPLY JUST TRY ifdown and ifup
	ifdown ${KICKME}




	
	######IFTDEBUG echV "ip link set ${dNAME} down $(ip link set ${dNAME} down)" debug
	#echV "ip link set ${dNAME} down" debug
	ip link set ${dNAME} down
	
	#######IFTDEBUG echV "ip link set ${dNAME} name $dNAMEto $(ip link set ${dNAME} name $dNAMEto)" debug
	#echV "ip link set ${dNAME} name $dNAMEto" debug
	ip link set ${dNAME} name $dNAMEto
	sleep 2 #NEEDED!




	if [ ! -z "${UCIMACADDR}" ]; then
		echV "macaddr: ${netdev_MAC_presented} > ${UCIMACADDR}" msg #echV "setmacddr: $UCIMACADDR" debug
		ip link set dev $dNAMEto address $UCIMACADDR
		#sleep 1
	fi


	##################HMMM maybe try just ifup? or its network restart :(
	######TDEBUG echV "$(ip link set ${dNAMEto} up $(ip link set ${dNAMEto} up)" debug
	#echV "ip link set ${dNAMEto} up" debug
	ip link set ${dNAMEto} up
	sleep 2
	#sleep 6


	#echV "TRYWITHNOIFUP(nexthplug)"
	ifup ${KICKME}

}
















echV() {

	DDm=$(date +%Y%m%d-%H%M%S)
	

	local M_PFX="${2}"

	local MDSENT



	if [ ! -z "${SLOG}" ]; then
		echo "${DDm}-$SNAME-${M_PFX}: ${1}" >>$SLOG
	fi


	case "${2}" in
		msg)
			#logger -t "vM$SNAME" "> ${1}"
			echo "vM$SNAME> ${1}" >/dev/kmsg
			return 0
		;;
	esac



	case "${2}" in
		logger)
			logger -t "vM$SNAME" "> ${1}"
			#return 0
		;;
	esac



	if [ -z "${2}" ]; then
			echo "vBLANKONE[K]$SNAME> ${1}" >/dev/kmsg ### echo "vBLANKONE[E]$SNAME > ${1}"
			return 0
	fi



	if [ "$2" = "debug" ] && [ -z "$TDEBUG" ]; then return 0; fi


	case "${2}" in
		debug)
			echo "vD${SNAME}> ${1}" > /dev/kmsg
			echo "vED${SNAME}> ${1}"
			MDSENT=1
		;;
		#*) msg hitting this
		#	logger -t "Z${SNAME}" "> ${1}"
		#;;
	esac
		#msg)
		#	logger -t "M$SNAME" "echV> ${1}"
		#;;





	if [ ! -z "$TDEBUG" ] && [ -z "$MDSENT" ]; then
		echo "vEKKK-${SNAME}: ${1}" >/dev/kmsg #echo "vEKKK${DDm}-$SNAME: ${1}" >/dev/kmsg
	fi


}



























	case "${INTERFACE}" in
			"SQM"*|"gre"*|"erspan"*|"teq"*|"ip6"*|"sit"*|"tunl"*|"ifb"*|"dummy"*)
				exit 0
			;;
	esac

	################################################################ SKIP net remove
	case "${HOTPLUG_TYPE}" in
	net)
		#################################
		case "$ACTION" in
			remove)
				exit 0
			;;
		esac
		#################################
	;;
	iface)
		:
	;;
	#*)
	#	echV "$sname HTYPEdbg OTHER ${HOTPLUG_TYPE}" debug #echo "$sname HTYPEdbg OTHER ${HOTPLUG_TYPE}"
	#;;
	esac















###########################
SDERIVED="000-nicmove3.1SHuntTOtmpTEST>KICKANIC"
SVERSION="5.2.3-3.11"
sFROM=$(basename $(dirname $script))








sname="kickanic"
DDD=$(date +%Y%m%d-%H%M%S)


ACT="${ACTION:-"none"}"
HT="$HOTPLUG_TYPE"




TMPd="/tmp/$sname"; mkdir -p "${TMPd}" #storeonrootfswhiletesting... powerremovedidnotcomeupright #TMPd="/tmp"
###########################


#SNAME="NICMOVE_${HOTPLUG_TYPE}_${ACTION}_$(date +%Y%m%d-%H%M%S)"
#SNAME="${sname}_${HOTPLUG_TYPE}_${ACTION}_$(date +%Y%m%d-%H%M%S)"
SNAME="${sname}_${HOTPLUG_TYPE}_${ACTION}"
SLOG="${TMPd}/${sname}-$IFACE-$DEVICENAME-$INTERFACE-$DEVICE"















#EDEBUG #[ ! -z "$EDEBUG" ] &&
#TDEBUG=1



############# TMPtoINItoTOGGLE
#if grep -q 'DC:A6:32:56:31:77' /proc/cmdline 2>/dev/null; then
#	TDEBUG=1
#	#EDEBUG=1 #SHOWSMORESTUFF DEVPATHallCALLS etc
#fi



eval $(grep '^HOTPLUG_NICMOVE_MAINTAINER=' /root/wrt.ini 2>/dev/null)
if [ ! -z "$HOTPLUG_NICMOVE_MAINTAINER" ]; then
	TDEBUG=1
#	#EDEBUG=1 #SHOWSMORESTUFF DEVPATHallCALLS etc
fi












if [ ! -z "$TDEBUG" ]; then
	DBGSLEEP=2


	###
	[ ! -z "$EDEBUG" ] && set > ${TMPd}/SET${DDD}_${INTERFACE}_${ACTION}


else
	SLOG=
fi #[ ! -z "$TDEBUG" ] && DBGSLEEP=2















if ! nicmove_enabled; then
	###################################PRINTSTOOOFTENdebugtho
	echV "${INTERFACE} nicmove is not enabled" debug
	#@?> nmSUMMARY_OFF="${nmSUMMARY_L} [OFFglobal]"
	exit 0
else
	: #nmSUMMARY_L="${nmSUMMARY_L} [ON]"
	############ #echV "nicmove is enabled" debug
fi #sleep ${DBGSLEEP:-"0"}








############################################################################### TMP DISABLED TO ALLOW FOR UPDATES
#if ! grep -q "^/etc/hotplug.d/net/000-kickanic" /etc/sysupgrade.conf; then
#	nmSUMMARY_L="${nmSUMMARY_L} [sysupgrade.conf add]"
#	echo "/etc/hotplug.d/net/000-kickanic" >> /etc/sysupgrade.conf
#fi























	case "${HOTPLUG_TYPE}" in
	net)
		MSGs_H="${HOTPLUG_TYPE}_${ACTION}_${INTERFACE}"
	;;
	iface)
		MSGs_H="${HOTPLUG_TYPE}_${ACTION}"
	;;
	*)
		echV "$sname HTYPEdbg OTHER ${HOTPLUG_TYPE}" debug #echo "$sname HTYPEdbg OTHER ${HOTPLUG_TYPE}"
	;;
	esac





	
	case "$DEVPATH" in
		*"/net/wlan"*)
			NIC_TYPE="wifi"
			MSGs_N="${MSGs_N} wifi"
		;;
		*"/usb1"*|*"/usb2"*)
			NIC_TYPE="usb"
			MSGs_N="${MSGs_N} usb"
		;;
		#"SQM"*|"gre"*|"erspan"*|"teq"*|"dummy"*)
		#	: #setignorefortheseabove
		#;;
		*)
			NIC_TYPE="unknown[$DEVPATH]"
		;; #echV "NOTUSB: $INTERFACE d:$DEVPATH"; exit 0; 
	esac




#case "${INTERFACE}" in
#	"SQM"*|"gre"*|"erspan"*|"teq"*|"dummy"*)
#		NIC_TYPE="ignore"
#		MSGs_N="${MSGs_N} ignore"
#esac
#######################################3#		#exit 0
#########dummy #gretap erspan #[   31.557276] vDkickanic_net_add>  [SKIPWIFI] i:wlan0 dc:a6:32:56:31:78  wifi







	case "$NIC_TYPE" in
		usb) :; ;;
		*)
			MSGs_NORUN="${MSGs_NORUN} notusb[${INTERFACE}:d>$DEVPATH]"
			#MSGs_NORUN="NOTUSB: $INTERFACE d:$DEVPATH"; #exit 0
		;;
	esac
	###wifi) :; ;;












if [ "$ACTION" = "add" ] && [ "$SUBSYSTEM" = "net" ]; then
	netdev_MAC_presented="$(cat /sys/"$DEVPATH"/address)"
fi

#LOWER nmSUMMARY_L="${nmSUMMARY_L} ${netdev_MAC_presented}"





#case ACT remove/move just [ON]
#case "${ACT}" in
#	add|move) #<moveforpeelTMP add)
#		echV "########################### SUMMARY ${nmSUMMARY_L}" debug
#	;;
#esac











case "$INTERFACE" in
	"wlan"*)
		nmSUMMARY_L="${nmSUMMARY_L} [SKIPWIFI]"
	;;
	#"SQM"*|"gre"*|"erspan"*|"teq"*|"dummy"*)
	#	nmSUMMARY_L="${nmSUMMARY_L} [SKIP_${INTERFACE}]"
	#;;
	*)
		nmSUMMARY_L="${nmSUMMARY_L} [ON]"
	;;
esac










nmSUMMARY_L="${nmSUMMARY_L} i:${INTERFACE}"


#MAC
nmSUMMARY_L="${nmSUMMARY_L} ${netdev_MAC_presented}"













case "$INTERFACE" in
	"wlan"*)
		echV "${nmSUMMARY_L} ${MSGs_N}" debug
		#HASHOTPLUGMSGs_HisINHEADER echV "${nmSUMMARY_L} ${MSGs_H} ${MSGs_N}" debug
		### echV "########################### SUMMARY ${nmSUMMARY_L} ${MSGs_H} ${MSGs_N}" debug
		exit 0 #HASLOWERSKIPPINGSTUFF in UCI_HAS_INTERFACE and OTHER PLACES
	;;


	#"SQM"*|"gre"*|"erspan"*|"teq"*|"dummy"*)
	#	: #EXIT BELOW also MSGnoRUN TBA ABOVE
	#;;



	*)
		echV "############## SUMMARY ${nmSUMMARY_L} ${MSGs_H} ${MSGs_N}" debug
		#echV "########################### SUMMARY ${nmSUMMARY_L}" debug
		#echV "########################### START_H ${MSGs_H}" debug
		#echV "########################### START_N ${MSGs_N}" debug
		[ ! -z "$EDEBUG" ] && echV "### DEVPATH: ${DEVPATH}" debug
	;;
esac









#case "$NIC_TYPE" in
#	"ignore")
#		echV "${nmSUMMARY_L} ${MSGs_N}" debug
#		exit 0
#	;;
#esac

















if [ "$ACTION" = "add" ] && [ "$SUBSYSTEM" = "net" ]; then




	###############################################################
	#case "$NIC_TYPE" in
	#	usb) :; ;;
	#	#MOVEDupMSGs_NORUN *) echV "NOTUSB: $INTERFACE d:$DEVPATH"; exit 0; ;;
	#	#MOVEDupMSGs_NORUN *) echV "NOTUSB: $INTERFACE d:$DEVPATH"; exit 0; ;;
	#esac
	###wifi) :; ;;
	##############################################################3
	##############################################################3
	##############################################################3
	######case "$DEVPATH" in
	######	*"/usb1"*|*"/usb2"*) :; ;;
	######	*) echV "NOTUSB: $INTERFACE d:$DEVPATH"; exit 0; ;;
	#######esac
	##############################################################3









	netdev_MAC_presented="$(cat /sys/"$DEVPATH"/address)"
	if nic_has_interface "$netdev_MAC_presented" "$INTERFACE"; then
		#echV "INTERFACE:$INTERFACE $netdev_MAC_presented is mac_original known to /etc/config/network"
		echV "INTERFACE:$INTERFACE $netdev_MAC_presented is mac_original known to /etc/config/network" msg
		if [ ! -z "$KICKME" ]; then
			netdev_MAC_moveto="$(echo $netdev_MAC_presented | sed 's|:||g')"
			netdev_MAC_moveto="$(echo $netdev_MAC_moveto | tail -c7)"
			#FUNCTIONHASAPRINT echo "000-kickanic_rename> ${INTERFACE} eth${netdev_MAC_moveto}" >/dev/kmsg
			kick_a_nic "${INTERFACE}" "eth${netdev_MAC_moveto}"
			exit 0
		fi
	else
	







		### SKIPTHISMESSAGEFORWIFI-EVENTUALLYUPPEREXIT-FORNOW nic_has_interace prints DEBUG skipping wlan*
		#case "$INTERFACE" in
		#	"wlan"*)
		case "$NIC_TYPE" in
			wifi*)
				:
			;;
			

			usb)
				echV "INTERFACE:$INTERFACE $netdev_MAC_presented is mac_original unknown to /etc/config/network" msg
				echV "###################     WARNING     #################" msg
				echV "   ALL USB ADAPTERS MUST BE SETUP TO HANDLE BOOT     " msg
				echV "                    DETECTION PROPERLY               " msg
				echV "###################     WARNING     #################" msg

			;;







			*)
				#echV "INTERFACE:$INTERFACE $netdev_MAC_presented is mac_original unknown to /etc/config/network" debug
				echV "INTERFACE:$INTERFACE $netdev_MAC_presented is mac_original unknown to /etc/config/network" msg




			;;
		esac

		exit 0




	fi
fi




exit 0