#!/bin/bash
# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

. /etc/conf.d/capi

[ "${CAPI_HOTPLUG_USB}" = "yes" ] || exit 0

# possible firmware locations (list and order taken from 'capiinit')
FWDIRS=(/lib/firmware/isdn /lib/firmware /usr/share/isdn /usr/lib/isdn /lib/isdn)

# Syslog output
syslog() {  # <msg>
	/usr/bin/logger -t "capi-usb" "$@"
}

# OK beep
beep_ok() {
	[ "${CAPI_HOTPLUG_BEEP}" = "yes" ] && \
	echo -en "\033[10;1200]\a\033[10;262]" > /dev/console
}

# Error beep
beep_error() {
	[ "${CAPI_HOTPLUG_BEEP}" = "yes" ] && \
	echo -en "\033[10;300]\a\033[10;262]" > /dev/console
}

# Driver lookup
cardinfo() {  # <driver>
	# /proc/capi/controller: <controller> <drivername> <state> <cardname> <controllerinfo>
	/bin/sed -n "s:^\([1-9][0-9]*\) \+${1} \+\([^ ]\+\) \+\([^ ]\+\) \+\([^ ]\+\):\1 \3 \2 \4:p" \
		/proc/capi/controller 2>/dev/null
}

# Firmware search
findfw() {  # <fw_name>
	local DIR
	for DIR in ${FWDIRS[*]}; do
		if [ -f "${DIR}/${1}" ]; then
			echo "${DIR}/${1}"; return 0
		fi
	done
	return 1
}

# AVM firmware loader
avmusb() {  # <driver> <usbdev> <firmware>
	local CARD NAME STATUS TYPE VER DEV FIRMWARE
	while read CARD NAME STATUS TYPE VER DEV; do  # AVM cardinfo
		if [ "${STATUS}" = "detected" -a ${DEV} -eq ${2} ]; then
			syslog "loading firmware '${3##*/}' onto controller ${CARD} (${NAME})"
			/usr/sbin/avmcapictrl load "${3}" "${CARD}" || return 1
			break
		fi
	done < <(cardinfo "${1}")
	return 0
}

# Split and normalize product code and device
IFS="/"
_D=(${DEVICE})
_P=(${PRODUCT})
_N=($(printf "%04x/%04x/%04x" 0x${_P[0]} 0x${_P[1]} 0x${_P[2]}))
unset IFS

# Setup variables
VENDID="${_N[0]}/${_N[1]}"
USBBUS="${_D[4]}"
USBDEV="${_D[5]}"

# Make sure we're not running multiple instances at once.
# Try twice to lock, otherwise give up.
LOCK="/var/run/capi-usb-${USBBUS}-${USBDEV}"
for ((i = 0; i < 2; i = i + 1)); do
	/bin/ln 2>/dev/null -sn $$ ${LOCK} && break
	LOCKPID=$(/bin/readlink 2>/dev/null ${LOCK}) || continue
	[[ $(</proc/${LOCKPID}/cmdline) == $(</proc/$$/cmdline) ]] 2>/dev/null && exit 0
	/bin/rm -f ${LOCK}
done

# Check to make sure locking was successful
if [ ! -L "${LOCK}" ]; then
	syslog "could not create lock ${LOCK}"
	beep_error
	exit 1
fi

# Set a trap to remove the lockfile when we're finished
trap "/bin/rm -f ${LOCK}" 0 1 2 3 15

# Select driver and firmware
LOADER=""
DRIVER=""
FIRMWARE=""
case "${VENDID}" in
	"057c/0c00") # FRITZCARD!USB
		DRIVER="fcusb";;
	"057c/1000") # FRITZCARD!USB v2.0
		DRIVER="fcusb2"; LOADER="avmusb"; FIRMWARE="fus2base.frm";;
	"057c/1900") # FRITZCARD!USB v2.1
		DRIVER="fcusb2"; LOADER="avmusb"; FIRMWARE="fus3base.frm";;
	"057c/2000") # FRITZX!USB
		DRIVER="fxusb";;
	"057c/2200") # BlueFRITZ!USB
		DRIVER="bfusb"; LOADER="avmusb"; FIRMWARE="bfubase.frm";;
	"057c/2300") # FRITZDSL!USB
		DRIVER="fcdslusb"; LOADER="avmusb"; FIRMWARE="fdsubase.frm";;
	"057c/2800") # FRITZX!USB OEM
		DRIVER="fxusb_CZ";;
	"057c/3500") # FRITZDSL!USB SL
		DRIVER="fcdslslusb"; LOADER="avmusb"; FIRMWARE="fdlubase.frm";;
	"0959/2bd0") # ISDN USB TA (Cologne Chip HFC-S USB based)
		DRIVER="hfcsusb";;
	"0675/1688") # DrayTek miniVigor 128 USB ISDN TA
		DRIVER="hfcsusb";;
	"07b0/0007") # Billion tiny USB ISDN TA 128
		DRIVER="hfcsusb";;
	"0742/2008") # Stollmann USB TA
		DRIVER="hfcsusb";;
	"0742/2009") # Aceex USB ISDN TA
		DRIVER="hfcsusb";;
	"0742/200a") # OEM USB ISDN TA
		DRIVER="hfcsusb";;
	"08e3/0301") # Olitec USB RNIS
		DRIVER="hfcsusb";;
	"07fa/0846") # Bewan Modem RNIS USB
		DRIVER="hfcsusb";;
	"07fa/0847") # Djinn Numeris USB
		DRIVER="hfcsusb";;
	"07b0/0006") # Twister ISDN TA
		DRIVER="hfcsusb";;
	*) # unknown card
		syslog "unknown USB product: ${VENDID}"
		exit 1;;
esac

if [ "${DRIVER}" = "hfcsusb" -a "${CAPI_HOTPLUG_MISDN}" != "yes" ]; then
	syslog "ignore mISDN card: ${DRIVER} (${VENDID})"
	exit 0
fi

case "${ACTION}" in
	add)
		# loading capi
		if ! ( [ -f /proc/capi/capi20 ] || /sbin/modprobe -sq capi ); then
			syslog "could not load CAPI!"
			beep_error; exit 1
		fi
	
		# loading driver
		if ! /sbin/modprobe -sq ${DRIVER}; then
			syslog "could not load driver ${DRIVER}!"
			beep_error; exit 1
		fi
	
		# loading firmware	
		if [ -n "${LOADER}" -a -n "${FIRMWARE}" ]; then
			CNT=0  # wait for udev (max 10s)
			while [ ! -c /dev/capi20 -a ${CNT} -lt 40 ]; do
				sleep 0.25; : $((CNT++))
			done
			FW=$(findfw "${FIRMWARE}")
			if [ -n "${FW}" ]; then
				if ! ${LOADER} ${DRIVER} ${USBDEV} ${FW}; then
					syslog "could not load firmware!"
					beep_error; exit 1
				fi
			else
				syslog "firmware '${FIRMWARE}' not found in ${FWDIRS[0]}"
				beep_error; exit 1
			fi
		fi

		# loading capidrv (should be loaded *after* card driver)
		if ! ( [ -f /proc/capi/capidrv -o "${CAPI_LOAD_CAPIDRV}" != "yes" ] \
			|| /sbin/modprobe -sq capidrv ); then
			syslog "could not load CAPIDRV!"
		fi
		
		beep_ok
		;;

	remove)
		/sbin/modprobe -sqr ${DRIVER}
		;;
esac
exit 0