#!/bin/sh
# $Id: uppcsetup,v 1.3 2004/03/26 01:42:14 sam Exp $
# Copyright 2004 Sam Lawrance <boris@brooknet.com.au>
# Do as you wish with it :)

# This is a script to help install and set up the uppc driver,
# and get it going with a Windows CE device. It's only really meant
# for installation, but it can also be installed and used at any time.

# Inputs to this script:
# INSTALLDIR - location of installed uppc.ko module
# MODDIR - where the kernel modules are

if test -n ${INSTALLDIR}; then INSTALLDIR=/usr/local/lib; fi
if test -n ${MODDIR}; then MODDIR=/boot/kernel; fi

# usbfind() detects a usb device by looking at dmesg and usbdevs output.
# Argument 1 is a regexp to look for in dmesg. The last match is used.
# From this a device name is extracted.
# Information about this device, if it is still attached, is then gathered
# from 'usbdevs'.
# From this, the device's usb vendor and product IDs are extracted.
# If the device in the dmesg line is not currently attached, no
# (useful) device information will be available except DEVMSG and DEVNAME,
# and the function will return nonzero.

usbfind()
{
	DEVMSG=`dmesg|grep "$1"|tail -n 1`
	DEVNAME=`echo ${DEVMSG} | awk -F":" "{print \\$1;}"`
	DEVINFO=`usbdevs -vd|grep -B1 "${DEVNAME}"|head -1`
	DEVIDS=`echo ${DEVINFO} | awk -F "[()]" "{print \\$2, \\$4;}"`
	DEVPRODUCT=`echo ${DEVIDS} | awk -F" " "{print \\$1;}"`
	DEVVENDOR=`echo ${DEVIDS} | awk -F" " "{print \\$2;}"`
	if test -n "${DEVNAME}" -a -n "${DEVINFO}" ; then return 0; else return 1; fi
}

# Arg 1 is vendor ID, arg 2 is product ID
setup_runtime_sysctls()
{
	# Remove old uppc sysctls
	local tempfile=`mktemp -t __sysctl.conf`
	cat /etc/sysctl.conf > ${tempfile}	
	grep -v "^hw\.usb\.uppc\." ${tempfile} > /etc/sysctl.conf
	rm -f ${tempfile}

	# Copy in new ones
	echo "hw.usb.uppc.vendor=${1}" >> /etc/sysctl.conf
	echo "hw.usb.uppc.product=${2}" >> /etc/sysctl.conf
		
	sysctl hw.usb.uppc.vendor="${1}"
	sysctl hw.usb.uppc.product="${2}"
}

# Create a ppp configuration file and include it in the main ppp.conf

setup_ppp_entry()
{
	# Add the include only if it isn't already there
	grep -q "[ \t]*!include[ \t]\+/etc/ppp/ppp-uppc.conf" /etc/ppp/ppp.conf || echo "!include /etc/ppp/ppp-uppc.conf" >> /etc/ppp/ppp.conf

	# Whatever is in this file gets clobbered with default values
	cat << EOF > /etc/ppp/ppp-uppc.conf
# Generated automatically by uppcsetup.
uppc:
 disable dns
 accept dns
 set login "CLIENT CLIENTSERVER"
 # DEVNAME is set by usbd
 set device /dev/\$DEVNAME
 set dial ""
 set ifaddr 192.168.130.102 192.168.130.201
 set speed 115200
 set timeout 300
EOF

}

# Add a section to usbd to bring up ppp to the device on attach.
# The entry is wrapped by magic comments for removal later on.

setup_usbd_entry()
{
	# Copy usbd.conf
	local tempfile=`mktemp -t __usbd.conf`
	cat /etc/usbd.conf > ${tempfile}

	local newfile=`mktemp -t __usbd.conf`

	# Remove old sections for this vendor and product id
	sed -i "" -e "/^# uppcsetup-config-begin-$DEVPRODUCT-$DEVVENDOR/,/^# uppcsetup-config-end-$DEVPRODUCT-$DEVVENDOR/ d" ${tempfile}

	cat << EOF > ${newfile}
# uppcsetup-config-begin-${DEVPRODUCT}-${DEVVENDOR}
# DO NOT ALTER THE COMMENTS WRAPPING THIS SECTION 
# Generated automatically by uppcsetup.
device "Windows CE Device"
	devname "cuaU[0-9]"
	vendor ${DEVVENDOR}
	product ${DEVPRODUCT}
	attach "/usr/sbin/ppp -background uppc"
# uppcsetup-config-end-${DEVPRODUCT}-${DEVVENDOR}
EOF

	# Append the old usbd.conf, less old configurationis
	cat $tempfile >> $newfile

	# Install

	cat $newfile > /etc/usbd.conf

	# If usbd was started by the system, restart it
	/etc/rc.d/usbd status && /etc/rc.d/usbd restart
}

###################################################################
# Here's where the work begins.
###################################################################

dialog --yesno "The uppc.ko driver module has been installed in ${INSTALLDIR}. Do you want to copy it to ${MODDIR} (where modules are usually kept)? You must choose yes if you want to set up your connection automatically." 8 65

if test ! $? = 0; then exit; fi

dialog --yesno "Do you want to set up your Pocket PC connection automatically?" 6 65

if test ! $? = 0; then exit; fi

# This instruction is so that when we come to kldunload the module,
# it is not in use. If PPP is using the device it may take up to 
# a minute to die and allow it to detach properly.

dialog --msgbox "If your Pocket PC is physically connected to your computer, please disconnect it now and wait 60 seconds before continuing or your machine may PANIC." 8 65

cp ${INSTALLDIR}/uppc.ko ${MODDIR}/uppc.ko 

echo 'uppc_load="YES"' >> /boot/loader.conf

dialog --msgbox "The command uppc_load=\"YES\" has been added to /boot/loader.conf. The uppc driver will be automatically loaded at boot from now on." 8 65

kldunload uppc.ko 2>&1 > /dev/null
kldload uppc.ko

KLD_ERR=$?

if test ${KLD_ERR} -ne 0; then
	dialog --msgbox "The uppc module could not be loaded. The error returned by kldload was: ${KLD_ERR}. Cannot continue." 8 65
	exit
else
	dialog --msgbox "The uppc module has been loaded. Connect your Pocket PC to the computer through a USB cradle or cable, then press enter." 6 65
fi

# Now we use the usbdevs function to check for the following:
# If the device was found & detected, there's nothing else to do.
# If it was found but not detected by the driver (ie attached to by ugen),
# help the user configure the driver to pick up the device.
# If it was not found at all, warn and give up.

if usbfind "ucom.: <Windows CE Device>"; then 
	dialog --msgbox "Your device was detected successfully and is now ready to use (${DEVMSG})" 8 65
	dialog --yesno "Would you like me to add entries to /etc/ppp/ppp.conf and /etc/usbd.conf to bring up a PPP link with the device when it attaches?" 7 65
	if test ! $? = 0; then exit; fi
	setup_ppp_entry
	setup_usbd_entry
else
	if usbfind "ugen.: "; then
		dialog --msgbox "Your device was not detected automatically by the driver. You will need to supply your device's USB vendor ID and product ID so the driver can recognise your device. I will attempt to guess the correct values by looking at the last device that was attached."  9 65

		tempfile=`mktemp -t __input`
		dialog --inputbox "Enter your device's USB vendor ID" 8 65 "${DEVVENDOR}" 2> ${tempfile}
		DEVVENDOR=`cat ${tempfile}`
		dialog --inputbox "Enter your device's USB product ID" 8 65 "${DEVPRODUCT}" 2> ${tempfile}
		DEVPRODUCT=`cat ${tempfile}`
		rm -f ${tempfile}

		setup_runtime_sysctls ${DEVVENDOR} ${DEVPRODUCT}

		dialog --msgbox "This information has been added to /etc/sysctl.conf. The driver will now recognise the device ID you entered. Remove your Pocket PC from its cradle/cable, wait 5 seconds, then reconnect it." 8 65 

		if usbfind "ucom.: <Windows CE Device>"; then 
			dialog --msgbox "Your device was detected successfully and is now ready to use (${DEVMSG})" 7 65
			dialog --yesno "Would you like me to add entries to /etc/ppp/ppp.conf and /etc/usbd.conf to bring up a PPP link with the device when it attaches?" 7 65
			if test ! $? = 0; then exit; fi
			setup_ppp_entry
			setup_usbd_entry
		else
			dialog --msgbox "Your device was still not detected successfully. Please read the uppc man page to configure the driver manually." 7 65
		fi
			
	else
		dialog --msgbox "Could not find any device that may be a Pocket PC. This can be caused by a faulty cable or connection or there may be something wrong with your USB setup. Please read the uppc man page to configure the driver manually." 8 65
		exit
	fi
fi

dialog --msgbox "All done! Remember: when a PPP link is established with your device, it expects to be able to connect to a running dccm (ports/palm/synce-dccm)." 8 65