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#!/bin/sh

#	hplj1000:
#	hplj1005:
#	hplj1018:
#	hplj1020:
#	hpljP1005:
#	hpljP1006:
#	hpljP1007:
#	hpljP1008:
#	hpljP1505:
#
#	Hotplug script for HP *1??? USB laser printers.  The model number
#	that this script deals with is determined from the script name.
#
#	Used to download firmware automatically into the printer when it
#	is powered up or plugged into the USB port.
#
#	Also, run this script once with the magic argument "install-usermap"
#	to create the proper entry in the /etc/hotplug/usb.usermap file.
#
#	The inspiration fo this script is from:
#		Oscar Santacreu. Alicante-Spain (2002)
#		Mike Morgan (2004)
#

PROGNAME="$0"

#
# Wait some time before installing the firmware so that probing for
# automatic printer setup which happens immediately after turning on
# the printer does not interfere with the firmware transfer to the
# printer
# https://bugs.launchpad.net/ubuntu/+source/foo2zjs/+bug/543177
#
sleep 3

#
# Set $DEV to, e.g. /dev/usb/lp0, to force the device you want
# Else, leave it null to automatically detect the device
#
DEV=/dev/usb/lp0
DEV=""

#
# Path to the USB CUPS backend. We use this backend to upload the firmware
# into the printer when we are on a CUPS/libusb-based system.
#
USB_BACKEND=/usr/lib/cups/backend/usb

#
# Directory to find downloadable HP firmware files sihpMMMM.dl
#
FWDIR=/lib/firmware/hp

#
# Program used to determine USB printer id information
#
# NOTE: /usr/bin is NOT mounted at this point
#
# e.g. /etc/rc.sysinit:
#    /sbin/start_udev
#    [snip]
#    # Mount all other filesystems (except for NFS and /proc, which is already
#
PRINTERID=`which usb_printerid`

#
#	Figure out how to log our messages
#
if [ -t 1 ]; then
    # Running from a tty...
    log() {
	echo "$PROGNAME: foo2zjs: $@"
    }
elif [ -x /usr/bin/logger ]; then
    # Have logger...
    log() {
	logger -t "$PROGNAME" -- "foo2zjs: $@"
    }
else
    # No logger...
    log() {
	echo "$PROGNAME: foo2zjs: $@" >> /var/log/messages
    }
fi

#
#	Figure out the model number from the name of this script
#
case "$0" in
*P1005)
    MODEL=P1005; FWMODEL=$MODEL
    USB1=0x03f0	#Vendor
    USB2=0x3d17	#Model
    ;;
*P1006)
    MODEL=P1006; FWMODEL=$MODEL
    USB1=0x03f0	#Vendor
    USB2=0x3e17	#Model
    ;;
*P1007)
    MODEL=P1007; FWMODEL=P1005		# Alias
    USB1=0x03f0	#Vendor
    USB2=0x4817	#Model
    ;;
*P1008)
    MODEL=P1008; FWMODEL=P1006		# Alias
    USB1=0x03f0	#Vendor
    USB2=0x4917	#Model
    ;;
*P1505)
    MODEL=P1505; FWMODEL=$MODEL
    USB1=0x03f0	#Vendor
    USB2=0x3f17	#Model
    ;;
*P1505n)
    MODEL=P1505n; FWMODEL=$MODEL
    USB1=0x03f0	#Vendor
    USB2=0x4017	#Model
    ;;
*1000)
    MODEL=1000; FWMODEL=$MODEL
    USB1=0x03f0	#Vendor
    USB2=0x0517	#Model
    ;;
*1005)
    MODEL=1005; FWMODEL=$MODEL
    USB1=0x03f0	#Vendor
    USB2=0x1317	#Model
    ;;
*1018)
    MODEL=1018; FWMODEL=$MODEL
    USB1=0x03f0 #Vendor
    USB2=0x4117 #Model
    ;;
*1020)
    MODEL=1020; FWMODEL=$MODEL
    USB1=0x03f0 #Vendor
    USB2=0x2b17 #Model
    ;;
*)
    log "Only HP LaserJet 100[05],1018,1020,P100[5678],P1505 are supported"
    exit
    ;;
esac

#
#	The special command line argument "install-usermap" will install
#	the proper entry into the /etc/hotplug/usb.usermap file
#
case "$1" in
install-usermap)
    if [ "$USB2" != "" ]; then
	if [ -w /etc/hotplug/usb.usermap ]; then
		USERMAP=/etc/hotplug/usb.usermap
	elif [ -d /etc/hotplug/usb/ ]; then
		USERMAP=/etc/hotplug/usb/foo2zjs.usermap
		if [ ! -s $USERMAP ]; then
			echo > $USERMAP
		fi
	else
		log "No /etc/hotplug usermap!"
		exit
	fi
	chmod 664 $USERMAP
	ex - $USERMAP <<-EOF
	g/^hplj$MODEL/d
	\$a
	hplj$MODEL 0x0003 $USB1 $USB2 0x0000 0x0000 0x00 0x00 0x00 0x00 0x00 0x00 0x00000000
	.
	w
	q
	EOF
    else
	log "I don't know the USB info for this model yet.  Please run"
	log "usb_printerid on the usb device and send the output to:"
	log "rick.richardson@comcast.net"
    fi
    exit 0
    ;;
install-usblp)
    for f in /etc/modprobe.d/blacklist*; do
	if grep -s -q usblp $f; then
	    ed - $f <<-EOF
		g/^blacklist.*usblp/d
		w
		q
		EOF
	    #echo $f
	    /sbin/modprobe usblp
	fi
    done
    exit 0
    ;;
esac
 
#
#	Procedures to load a single device with firmware
#
load_usblp() {
    _dev="$1"
    fw="$FWDIR/sihp$FWMODEL.dl"
    if [ ! -f "$fw" ]; then
	log "Missing HP LaserJet $MODEL firmware file $fw"
	log "...read foo2zjs installation instructions and run ./getweb $MODEL"
	return 1
    fi

    log "loading HP LaserJet $MODEL firmware $fw to $_dev ..."
    # There is a timeout problem with udev and FC4, so spin it off.
    (
	if cat $fw > $_dev; then
	    log "... download successful."
	else
	    log "... download failed."
	fi
    ) &
    return 0
}

load_cups() {
    fw="$FWDIR/sihp$FWMODEL.dl"
    if [ ! -f "$fw" ]; then
	log "Missing HP LaserJet $MODEL firmware file $fw"
	log "...read foo2zjs installation instructions and run ./getweb $MODEL"
	return 1
    fi

    # There is a timeout problem with udev and FC4, so spin it off.
    (
	device_found=0
	for uri in `$USB_BACKEND 2> /dev/null | grep -i 'HP.*LaserJet.*'"$MODEL" | grep -v FWVER | cut -d ' ' -f 2`; do
	    log "loading HP LaserJet $MODEL firmware $fw to CUPS USB device ..."
	    device_found=1
	    if DEVICE_URI="$uri" $USB_BACKEND 1 1 1 1 '' $fw 2> /dev/null; then
		log "$uri... download successful."
	    else
		log "$uri... download failed."
	    fi
	done
    ) &
    return 0
}

#
#	Add a sleep
#
sleep 3

#
#	OK, now download firmware to any printers that need it
#
if [ "$DEV" != "" ]; then
    #
    # force downloading to a specific device
    #
    if [ "$SUBSYSTEM" != "usbmisc" ]; then exit; fi
    load_usblp "$DEV"
elif [ -x $USB_BACKEND ]; then
        #
        # If we have CUPS installed, use the CUPS "usb" backend, as then we do
        # not need to care whether the system uses the usblp kernel module or
        # libusb 
        #
        if [ "$SUBSYSTEM" != "usb" ]; then exit; fi
        load_cups
elif [ -x $PRINTERID ]; then
	#
	# Sniff around for printers that need a firmware download
	#
	if [ "$SUBSYSTEM" != "usbmisc" ]; then exit; fi
	usblps=`find /dev/usb -type c -name 'lp*'`" "`find /dev -type c -name 'usblp*'`
	for dev in $usblps; do
	    status=`$PRINTERID $dev 2>/dev/null | grep -y "hp LaserJet $MODEL"`
	    if [ "$status" != "" ]; then
		# This is a LaserJet 100x
		chmod 0666 $dev
		status=`$PRINTERID $dev | grep 'FWVER'`
		if [ "$status" = "" ]; then
		    # Firmware is not yet loaded
		    load_usblp "$dev"
		else
		    log "HP LaserJet $MODEL firmware already loaded into $dev"
		fi
	    fi
	done
else
    log "HP LaserJet $MODEL firmware was not downloaded..."
    log "...couldn't find $PRINTERID, DEV is not set, and CUPS not installed."
fi