#

# Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# This component and the accompanying materials are made available

# under the terms of "Eclipse Public License v1.0"

# which accompanies this distribution, and is available

# at the URL "http://www.eclipse.org/legal/epl-v10.html".

#

# Initial Contributors:

# Nokia Corporation - initial contribution.

#

# Contributors:

#

# Description: The script can 

# - create a working ethernet setup with "ethernet" config option 

# - restore previous setup with "restore" config option 

#

use Getopt::Long;

use Cwd;

my $config="default";

my $target="default";

my $kernel="default";

my $showhelp='0';

my $etherNif;

my $etherMac;

my $etherSpeed;

# this variable is passed as an argument to netcards.exe

# specifies which interface to use in case of multiple interfaces

my $interface=0;

$/ = "\n";

GetOptions('config=s' => \$config, 'kernel=s' => \$kernel, 'target=s' => \$target, 'variant=s' => \$variant, 'help' => \$showhelp, 'interface:i' => \$interface);

$config = lc( $config );

$kernel = lc( $kernel );

$target = lc( $target );

$variant = lc( $variant );

if( $showhelp || ( $kernel ne "eka1" && $kernel ne "eka2" ) ||

 ( $target ne "wins" && $target ne "winscw" ) ||

 ( $config ne "ethernetwithcommdb" && $config ne "restorecommdb" && $config ne "ethernetnocommdb" ) ||

 ( $variant ne "udeb" && $variant ne "urel" ) )

	{

	print "Command usage: configchange --config [ethernetWithCommDB|restoreCommDB|ethernetNoCommDB] --kernel [EKA1|EKA2] --target [wins|winscw] --variant [UDEB|UREL]\n";

	print "\t\t--config   \tSelect required configuration\n";

	print "\t\t--kernel   \tKernel variant\n";

	print "\t\t--target   \tTarget emulator\n";

	print "\t\t--variant  \tBuild type\n";

	print "\t\t--interface  \tInterface Number\n";

	print "\t\t--help   \tThis text\n";

	exit 0;

	}

my $epocroot = &getEpocroot;

my $drive = &getDrive;

if( $config ne "restorecommdb" )

	{

	# must be creating some ethernet setup

	if( $config eq "ethernetwithcommdb" )

		{

		# write an appropriate commDB setup

		print( "Setting up CommDB for ethernet\n" );

		system( "$drive\\$epocroot\\epoc32\\release\\$target\\$variant\\ceddump -dtextshell --" ) == 0 

				or die "Error running ceddump!\n";

		system( "move $drive\\$epocroot\\epoc32\\$target\\c\\cedout.cfg $drive\\$epocroot\\epoc32\\$target\\c\\nonethernetced.cfg" ) == 0

				or die "Failed to rename cedout.cfg!\n";

		system( "$drive\\$epocroot\\epoc32\\release\\$target\\$variant\\ced -dtextshell -- -i c:\\EthernetCed.xml") == 0

				or die "Error running ced!\n";

  		}

  	print( "Running Netcards to obtain adapter info\n" );

	system( "$drive\\$epocroot\\epoc32\\tools\\netcards $interface" ) == 0

			or die "Error running netcards!\n";

	open ( INFILE, "ethernet.ini" ) or die "Can't find netcards output file, ethernet.ini!\n";					 # get from current directory where netcards wrote it to

	if ($kernel eq "eka1")

		{

	   	open ( ETHERMAC, ">$drive\\$epocroot\\epoc32\\$target\\c\\system\\data\\ethermac.dat" ) or die "Can't open $drive\\$epocroot\\epoc32\\$target\\c\\system\\data\\ethermac.dat!\n";

	   	open ( ETHERDRV, ">$drive\\$epocroot\\epoc32\\$target\\c\\system\\data\\etherdriver.dat" ) or die "Can't open $drive\\$epocroot\\epoc32\\$target\\c\\system\\data\\etherdriver.dat!\n";

	   	}

	while( <INFILE> )

		{

		chomp;

	   	my $sLine = $_;

		if( $sLine =~ /ETHER_NIF=(.*)/i )

			{

			#print "Matched ETHER_NIF\n";

			if ($kernel eq "eka1")

				{

				print ETHERDRV "$1";

    			}

			else

				{

				$etherNif = $1;

				}

			}

		elsif( $sLine =~ /ETHER_MAC=(.*)/i )

			{

		#print "Matched ETHER_MAC\n";

			if ($kernel eq "eka1")

				{

				print ETHERMAC "$1";

    			}

			else

				{

				$etherMac = $1;

    			}

			}

		elsif( $sLine =~ /ETHER_SPEED=(.*)/i )

			{

			#print "Matched ETHER_SPEED\n";

			if ($kernel eq "eka2")

				{

				$etherSpeed = $1;

    			}

			}

		#print "line: $sLine\n";

		}

	if ($kernel eq "eka1")

		{

		close( ETHERDRV );

		close( ETHERMAC );

  		}

  	else

  		{

  		# do the insertion to epoc.ini

  		&generateEpocIni;

    	}

	close( INFILE );

	}

else

	{

	if( -f "$drive\\$epocroot\\epoc32\\$target\\c\\nonethernetced.cfg" )

		{

		system( "$drive\\$epocroot\\epoc32\\release\\$target\\$variant\\ced -i c:\\nonethernetced.cfg" ) == 0

				or die "Can't find backup ced file!\n";

		system( "move $drive\\$epocroot\\epoc32\\$target\\c\\nonethernetced.cfg $drive\\$epocroot\\epoc32\\$target\\c\\cedout.cfg") == 0

				or die "Can't rename backup ced file!\n";

		}

	else

		{

		print "No restore file found!\n";

		}

	}

#

# Determines, validates, and returns EPOCROOT.

#

sub getEpocroot

{

    my $epocroot = $ENV{EPOCROOT};

    die "ERROR: Must set the EPOCROOT environment variable.\n"

	if (!defined($epocroot));

    $epocroot =~ s-/-\\-go;	# for those working with UNIX shells

    die "ERROR: EPOCROOT must be an absolute path, " .

	"not containing a drive letter.\n" if ($epocroot !~ /^\\/);

    die "ERROR: EPOCROOT must not be a UNC path.\n" if ($epocroot =~ /^\\\\/);

    die "ERROR: EPOCROOT must end with a backslash.\n" if ($epocroot !~ /\\$/);

    die "ERROR: EPOCROOT must specify an existing directory.\n"

	if (!-d $epocroot);

    return $epocroot;

}

#

# Determines and returns the current drive, if any.

#

sub getDrive

{

    my $wd = cwd;

    my $drive;

    if($wd =~ /^([a-zA-Z]:)/) {

	$drive = $1;

    } else {

	# Perhaps we're on a machine that has no drives.

	$drive = "";

    }

    return $drive;

}

#

#

#

sub generateEpocIni

{

	my @outLines;

	my $length = 0;

	my $needToAppend = TRUE;

	my $epocIniAlreadyExists = FALSE;

	my $finished = FALSE;

 	print "generating epoc ini\n";

	if ( -e "$drive\\$epocroot\\epoc32\\data\\epoc.ini" )

	   {

	   $epocIniAlreadyExists = TRUE;

 	   open( EPOCINI, "+<$drive\\$epocroot\\epoc32\\data\\epoc.ini" );

	   seek( EPOCINI, 0, 0 );

	   while( <EPOCINI> )

	   		{

			chomp;

	   		my $sLine = $_;

			if( $sLine =~ /ETHER_NIF=(.*)/i )

				{

				#print "matched etherNIF\n";

				$length = length( $etherNif );

    			substr( $sLine, (index( $sLine, "=" )+1), $length ) = $etherNif;

				$needToAppend = FALSE;

				}

			elsif( $sLine =~ /ETHER_MAC=(.*)/i )

				{

				#print "Matched ETHER_MAC\n";

				$length = length( $etherMac );

				substr( $sLine, (index( $sLine, "=" )+1), $length ) = $etherMac;

				$needToAppend = FALSE;

	    		}

			elsif( $sLine =~ /ETHER_SPEED=(.*)/i )

				{

				#print "Matched etherSpeed\n";

    			$length = length( $etherSpeed );

				substr( $sLine, (index( $sLine, "=" )+1), $length ) = $etherSpeed;

				$needToAppend = FALSE;

	   			}

			push( @outLines, $sLine );

			push( @outLines, "\n" );

	   		}

	   	if ( $needToAppend eq FALSE )

	   	   	{

	   	   	print "Writing new settings into epoc.ini\n";

	   	   	# we have read the entire file and replaced what we need to

	   	   	# now lets write it back to the file

		   	seek( EPOCINI, 0, 0 );

	   	   	print EPOCINI @outLines;

	   	   	$finished = TRUE;

           	}

        close ( EPOCINI );

		}

	if ( $finished eq FALSE )

	    {

       	if ( ($needToAppend eq TRUE) && ($epocIniAlreadyExists eq TRUE) )

       	    {

       	    print "Appending settings to current epoc.ini\n";

       	  	# we must append all the settings onto the end of the current epoc.ini

	   	  	open( EPOCINI, ">>$drive\\$epocroot\\epoc32\\data\\epoc.ini" ) or die "Can't open epoc.ini!\n";

       	  	}

    	elsif ( $epocIniAlreadyExists eq FALSE )

       	 	{

       	 	print "Creating new epoc.ini\n";

       	  	# create new file

	   	  	open( EPOCINI, ">$drive\\$epocroot\\epoc32\\data\\epoc.ini" );

       	  	}

		print EPOCINI "\nETHER_NIF=";

	   	print EPOCINI "$etherNif\n";

	   	print EPOCINI "ETHER_MAC=";

	   	print EPOCINI "$etherMac\n";

	   	print EPOCINI "ETHER_SPEED=";

	   	print EPOCINI "$etherSpeed\n";

	   	close ( EPOCINI );

     	}

}