#!/bin/sh

set -e

. /usr/share/debconf/confmodule

tmp=`mktemp -q -d`

latest_firmware ()
{
cd $tmp
export FIRMWARE_INSTALL_DIR="/lib/firmware"

# use apt proxy
APT_PROXIES=$(apt-config shell \
http_proxy Acquire::http::Proxy \
https_proxy Acquire::https::Proxy \
ftp_proxy Acquire::ftp::Proxy \
)

if [ -n "$APT_PROXIES" ]; then
        eval export $APT_PROXIES
fi

wget --timeout=60 http://www.lwfinger.com/b43-firmware/broadcom-wl-5.100.138.tar.bz2
if [ $? -ne 0 ]; then
	echo "Some problem occurred during the firmware download. Please check your internet connection." 
	exit 0
    else
	if [ -d /lib/firmware/b43 ]; then
	   echo "Deleting old extracted firmware..."
	   rm -rf /lib/firmware/b43
	fi
fi
tar xvjf broadcom-wl-5.100.138.tar.bz2
cd broadcom-wl-5.100.138/linux
b43-fwcutter -w "$FIRMWARE_INSTALL_DIR" wl_apsta.o
rm -rf $tmp
}

# check environment
if [ "$(stat -c %d/%i /)" != "$(stat -Lc %d/%i /proc/1/root 2>/dev/null)" ];
 then
    echo "A chroot environment has been detected."
    echo "Remember this firmware needs kernel >= 2.6.25."
    latest_firmware
    exit 0
 else 
    echo "No chroot environment found. Starting normal installation"
fi
     
     


# check kernel version
if dpkg --compare-versions 2.6.25 gt `uname -r | cut -d- -f1`; then
	echo "Kernel too old. This firmware needs >= 2.6.25!."
	echo "Aborting!"
	exit 0
fi

# install firmware unconditional if the corresponding debconf value is true
# this is usefull for live-systems or similar systems that should work on
# changing hardware
db_get b43-fwcutter/install-unconditional
if [ "$RET" = "true" ] ; then
    latest_firmware
    exit 0
fi

# Fix for BCM4306/3 [14e4:4320] (rev 03)
chip=`lspci -n | grep -o "14e4:4320 (rev 03)"` || true
if [ "$chip" ] ; then
   echo "Your card is BCM4306/3 [14e4:4320] (rev 03), firwmare 5.100.138 will be used"
   latest_firmware
   exit 0
fi 

# Fix for BCM4306/3 [14e4:4324] (rev 03)
chip=`lspci -n | grep -o "14e4:4324 (rev 03)"` || true
if [ "$chip" ] ; then
   echo "Your card is BCM4306/3 [14e4:4324] (rev 03), firwmare 5.100.138 will be used"
   latest_firmware
   exit 0
fi
   
# check chip
pci=`lspci -n | grep -o "14e4:[1234567890abcdef]\+"` || true

if [ -n "$pci" ]; then
	for device in $pci; do
		device_id=`echo $device | cut -d: -f2`
		case $device_id in
		4301 | 4306 | 4320 |4324 | 4325)
			legacy=1
		;;
		4307 | 4311 | 4312 | 4315 | 4318 | 4319 | 4321 | 4328 | 4329 | 432b | 432c | 4331 | 4353 | 4357 | 5354)
			latest=1
                ;;
		4322 | 4358 | 4365 | 4727 | a8d8)
			# b43 upstream says 3.6+ for a8d8
			unsupported="$unsupported $device_id"
		;;
		0576 | 4313 | 432a | 432d | 4358 | 4359 | 435a | a99d)
                        nottested=1
                ;;
		*)
		;;
		esac
	done
fi

if [ "$legacy" ]; then
	echo "An unsupported BCM4301, BCM4306 or BCM4306/2 device was found."
	echo "Use b43legacy firmware (firmware-b43legacy-installer package) instead."
	echo "Aborting."
	exit 0
elif [ "$unsupported" ]; then
	echo -n "Unsupported device(s) found: PCI id "
	for device_id in $unsupported; do echo -n "14e4:$device_id "; done
	echo
	echo "Aborting."
	exit 0
elif [ "$nottested" ]; then
        echo "This card is actually not tested. Please install the driver manually."
        exit 0
elif [ "$latest" ]; then
        echo "This card work with newer 5.100.138 firmware. Trying to install it."
        latest_firmware
        exit 0
fi

#DEBHELPER#