libsetup.pm 35.6 KB
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#!/usr/bin/perl -wT

#
# Common routines and constants for the client bootime setup stuff.
#
package libsetup;
use Exporter;
@ISA = "Exporter";
@EXPORT =
    qw ( libsetup_init inform_reboot cleanup_node check_status
	 create_nicknames doifconfig dohostnames
	 doaccounts dorpms dotarballs dostartupcmd install_deltas
	 bootsetup nodeupdate startcmdstatus whatsmynickname
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	 TBBackGround TBForkCmd remotenodeupdate remotenodevnodesetup
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	 OPENTMCC RUNTMCC MFS
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	 TMCC TMIFC TMDELAY TMRPM TMTARBALLS TMHOSTS
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	 TMNICKNAME HOSTSFILE TMSTARTUPCMD FINDIF TMTUNNELCONFIG
	 TMTRAFFICCONFIG TMROUTECONFIG TMVNODEDIR
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	 TMCCCMD_REBOOT TMCCCMD_STATUS TMCCCMD_IFC TMCCCMD_ACCT TMCCCMD_DELAY
	 TMCCCMD_HOSTS TMCCCMD_RPM TMCCCMD_TARBALL TMCCCMD_STARTUP
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	 TMCCCMD_DELTA TMCCCMD_STARTSTAT TMCCCMD_READY TMCCCMD_TRAFFIC
	 TMCCCMD_BOSSINFO
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       );

# Must come after package declaration!
use English;

#
# This is the home of the setup library on the client machine. The including
# program has to tell us this by calling the init routine below. For example,
# it is /etc/testbed on FreeBSD and /etc/rc.d/testbed on Linux.
#
my $SETUPDIR;

sub libsetup_init($)
{
    my($path) = @_;

    $SETUPDIR = $path;
}

#
# This "local" library provides the OS dependent part. Must load this after
# defining the above function cause the local library invokes it to set the
# $SETUPDIR
#
use liblocsetup;

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#
# For virtual (multiplexed nodes). If defined, tack onto tmcc command.
# and use in pathnames. Not sure how this will be used later with jailed
# virtual nodes, since they will run in their own environment, but without
# jail we have to share the same namespace.
#
my $vnodeid	= "";

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#
# These are the paths of various files and scripts that are part of the
# setup library.
#
sub TMCC()		{ "$SETUPDIR/tmcc"; }
sub TMIFC()		{ "$SETUPDIR/rc.ifc"; }
sub TMRPM()		{ "$SETUPDIR/rc.rpm"; }
sub TMTARBALLS()	{ "$SETUPDIR/rc.tarballs"; }
sub TMSTARTUPCMD()	{ "$SETUPDIR/startupcmd"; }
sub TMHOSTS()		{ "$SETUPDIR/hosts"; }
sub TMNICKNAME()	{ "$SETUPDIR/nickname"; }
sub FINDIF()		{ "$SETUPDIR/findif"; }
sub HOSTSFILE()		{ "/etc/hosts"; }
sub TMMOUNTDB()		{ "$SETUPDIR/mountdb"; }
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sub TMROUTECONFIG()     { "$SETUPDIR/$vnodeid/rc.route"; }
sub TMTRAFFICCONFIG()	{ "$SETUPDIR/$vnodeid/rc.traffic"; }
sub TMTUNNELCONFIG()	{ "$SETUPDIR/$vnodeid/rc.tunnel"; }
sub TMVTUNDCONFIG()	{ "$SETUPDIR/$vnodeid/vtund.conf"; }
sub TMPASSDB()		{ "$SETUPDIR/passdb"; }
sub TMGROUPDB()		{ "$SETUPDIR/groupdb"; }
sub TMVNODEDIR()	{ "$SETUPDIR/$vnodeid"; }
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#
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# This is the VERSION. We send it through to tmcd so it knows what version
# responses this file is expecting.
#
# BE SURE TO BUMP THIS AS INCOMPATIBILE CHANGES TO TMCD ARE MADE!
#
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sub TMCD_VERSION()	{ 4; };
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#
# These are the TMCC commands. 
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#
sub TMCCCMD_REBOOT()	{ "reboot"; }
sub TMCCCMD_STATUS()	{ "status"; }
sub TMCCCMD_IFC()	{ "ifconfig"; }
sub TMCCCMD_ACCT()	{ "accounts"; }
sub TMCCCMD_DELAY()	{ "delay"; }
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sub TMCCCMD_HOSTS()	{ "hostnames"; }
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sub TMCCCMD_RPM()	{ "rpms"; }
sub TMCCCMD_TARBALL()	{ "tarballs"; }
sub TMCCCMD_STARTUP()	{ "startupcmd"; }
sub TMCCCMD_DELTA()	{ "deltas"; }
sub TMCCCMD_STARTSTAT()	{ "startstatus"; }
sub TMCCCMD_READY()	{ "ready"; }
sub TMCCCMD_MOUNTS()	{ "mounts"; }
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sub TMCCCMD_ROUTING()	{ "routing"; }
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sub TMCCCMD_TRAFFIC()	{ "trafgens"; }
sub TMCCCMD_BOSSINFO()	{ "bossinfo"; }
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sub TMCCCMD_TUNNEL()	{ "tunnels"; }
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#
# Some things never change.
# 
my $TARINSTALL  = "/usr/local/bin/install-tarfile %s %s";
my $DELTAINSTALL= "/usr/local/bin/install-delta %s";
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my $VTUND       = "/usr/local/sbin/vtund";
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#
# This is a debugging thing for my home network.
# 
#my $NODE	= "REDIRECT=155.101.132.101";
$NODE		= "";

# Locals
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my $pid		= "";
my $eid		= "";
my $vname	= "";

# When on the MFS, we do a much smaller set of stuff.
# Cause of the way the packages are loaded (which I do not understand),
# this is computed on the fly instead of once.
sub MFS()	{ if (-e "$SETUPDIR/ismfs") { return 1; } else { return 0; } }
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#
# Same for a remote node.
#
sub REMOTE()	{ if (-e "$SETUPDIR/isrem") { return 1; } else { return 0; } }

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#
# Open a TMCC connection and return the "stream pointer". Caller is
# responsible for closing the stream and checking return value.
#
# usage: OPENTMCC(char *command, char *args)
#
sub OPENTMCC($;$)
{
    my($cmd, $args) = @_;
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    my $vn = "";
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    local *TM;

    if (!defined($args)) {
	$args = "";
    }
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    if ($vnodeid ne "") {
	$vn = "-n $vnodeid";
    }
    
    my $foo = sprintf("%s -v %d %s $vn %s %s |",
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		      TMCC, TMCD_VERSION, $NODE, $cmd, $args);
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    open(TM, $foo)
	or die "Cannot start $TMCC: $!";

    return (*TM);
}

#
# Run a TMCC command with the provided arguments.
#
# usage: RUNTMCC(char *command, char *args)
#
sub RUNTMCC($;$)
{
    my($cmd, $args) = @_;
    my($TM);

    if (!defined($args)) {
	$args = "";
    }
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    $TM = OPENTMCC($cmd, $args);

    close($TM)
	or die $? ? "TMCC exited with status $?" : "Error closing pipe: $!";
    
    return 0;
}

#
# Inform the master we have rebooted.
#
sub inform_reboot()
{
    RUNTMCC(TMCCCMD_REBOOT);
    return 0;
}

#
# Reset to a moderately clean state.
#
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sub cleanup_node ($) {
    my ($scrub) = @_;
    
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    print STDOUT "Cleaning node; removing configuration files ...\n";
    unlink TMIFC, TMRPM, TMSTARTUPCMD, TMNICKNAME, TMTARBALLS;
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    unlink TMROUTECONFIG, TMTRAFFICCONFIG, TMTUNNELCONFIG;
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    unlink TMMOUNTDB . ".db";

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    #
    # If scrubbing, remove the password/group file DBs so that we revert
    # to base set.
    # 
    if ($scrub) {
	unlink TMPASSDB . ".db";
	unlink TMGROUPDB . ".db";
    }

    if (! REMOTE()) {
	printf STDOUT "Resetting %s file\n", HOSTSFILE;
	if (system($CP, "-f", TMHOSTS, HOSTSFILE) != 0) {
	    printf "Could not copy default %s into place: $!\n", HOSTSFILE;
	    exit(1);
	}
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    }

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    return os_cleanup_node($scrub);
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}

#
# Check node allocation.
#
# Returns 0 if node is free. Returns list (pid/eid/vname) if allocated.
#
sub check_status ()
{
    my $TM;
    
    $TM = OPENTMCC(TMCCCMD_STATUS);
    $_  = <$TM>;
    close($TM);

    if ($_ =~ /^FREE/) {
	return 0;
    }
    
    if ($_ =~ /ALLOCATED=([-\@\w.]*)\/([-\@\w.]*) NICKNAME=([-\@\w.]*)/) {
	$pid   = $1;
	$eid   = $2;
	$vname = $3;
    }
    else {
	warn "*** WARNING: Error getting reservation status\n";
	return 0;
    }
    return ($pid, $eid, $vname);
}

#
# Stick our nickname in a file in case someone wants it.
#
sub create_nicknames()
{
    open(NICK, ">" . TMNICKNAME)
	or die("Could not open nickname file: $!");
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    print NICK "$vname.$eid.$pid\n";
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    close(NICK);

    return 0;
}

#
# Process mount directives from TMCD. We keep track of all the mounts we
# have added in here so that we delete just the accounts we added, when
# project membership changes. Same goes for project directories on shared
# nodes. We use a simple perl DB for that.
#
sub domounts()
{
    my $TM;
    my %MDB;
    my %mounts;
    my %deletes;
    
    $TM = OPENTMCC(TMCCCMD_MOUNTS);

    while (<$TM>) {
	if ($_ =~ /REMOTE=([-:\@\w\.\/]+) LOCAL=([-\@\w\.\/]+)/) {
	    $mounts{$1} = $2;
	}
    }

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    #
    # The MFS version does not support (or need) this DB stuff. Just mount
    # them up.
    #
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    if (MFS()) {
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	while (($remote, $local) = each %mounts) {
	    if (! -e $local) {
		if (! os_mkdir($local, 0770)) {
		    warn "*** WARNING: Could not make directory $local: $!\n";
		    next;
		}
	    }
	
	    print STDOUT "  Mounting $remote on $local\n";
	    if (system("$MOUNT $remote $local")) {
		warn "*** WARNING: Could not $MOUNT $remote on $local: $!\n";
		next;
	    }
	}
	return 0;
    }

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    dbmopen(%MDB, TMMOUNTDB, 0660);
    
    #
    # First mount all the mounts we are told to. For each one that is not
    # currently mounted, and can be mounted, add it to the DB.
    # 
    while (($remote, $local) = each %mounts) {
	if (system("$MOUNT | $EGREP ' $local '") == 0) {
	    $MDB{$remote} = $local;
	    next;
	}

	if (! -e $local) {
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	    if (! os_mkdir($local, 0770)) {
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		warn "*** WARNING: Could not make directory $local: $!\n";
		next;
	    }
	}
	
	print STDOUT "  Mounting $remote on $local\n";
	if (system("$MOUNT $remote $local")) {
	    warn "*** WARNING: Could not $MOUNT $remote on $local: $!\n";
	    next;
	}

	$MDB{$remote} = $local;
    }

    #
    # Now unmount the ones that we mounted previously, but are now no longer
    # in the mount set (as told to us by the TMCD). Note, we cannot delete 
    # them directly from MDB since that would mess up the foreach loop, so
    # just stick them in temp and postpass it.
    #
    while (($remote, $local) = each %MDB) {
	if (defined($mounts{$remote})) {
	    next;
	}

	if (system("$MOUNT | $EGREP ' $local '")) {
	    $deletes{$remote} = $local;
	    next;
	}

	print STDOUT "  Unmounting $local\n";
	if (system("$UMOUNT $local")) {
	    warn "*** WARNING: Could not unmount $local\n";
	    next;
	}
	
	#
	# Only delete from set if we can actually unmount it. This way
	# we can retry it later (or next time).
	# 
	$deletes{$remote} = $local;
    }
    while (($remote, $local) = each %deletes) {
	delete($MDB{$remote});
    }

    # Write the DB back out!
    dbmclose(%MDB);

    return 0;
}

#
# Do interface configuration.    
# Write a file of ifconfig lines, which will get executed.
#
sub doifconfig ()
{
    my $TM;
    
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    #
    # Kinda ugly, but there is too much perl goo included by Socket to put it
    # on the MFS. 
    # 
    if (MFS()) {
	return 1;
    }
    require Socket;
    import Socket;
    
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    $TM = OPENTMCC(TMCCCMD_IFC);

    #
    # Open a connection to the TMCD, and then open a local file into which
    # we write ifconfig commands (as a shell script).
    # 
    open(IFC, ">" . TMIFC)
	or die("Could not open " . TMIFC . ": $!");
    print IFC "#!/bin/sh\n";
    
    while (<$TM>) {
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	my $pat;

	#
	# Note that speed has a units spec: (K|M)bps
	# 
	$pat  = q(INTERFACE=(\d*) INET=([0-9.]*) MASK=([0-9.]*) MAC=(\w*) );
	$pat .= q(SPEED=(\w*) DUPLEX=(\w*));
	
	if ($_ =~ /$pat/) {
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	    my $iface;

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	    my $inet     = $2;
	    my $mask     = $3;
	    my $mac      = $4;
	    my $speed    = $5; 
	    my $duplex   = $6;
	    my $routearg = inet_ntoa(inet_aton($inet) & inet_aton($mask));
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	    if ($iface = findiface($mac)) {
		my $ifline =
		    os_ifconfig_line($iface, $inet, $mask, $speed, $duplex);
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		print STDOUT "  $ifline\n";
		print IFC "$ifline\n";
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		print IFC TMROUTECONFIG . " $routearg up\n";
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	    }
	    else {
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		warn "*** WARNING: Bad MAC: $mac\n";
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	    }
	}
	else {
	    warn "*** WARNING: Bad ifconfig line: $_";
	}
    }
    close($TM);
    close(IFC);
    chmod(0755, TMIFC);

    return 0;
}

#
# Convert from MAC to iface name (eth0/fxp0/etc) using little helper program.
# 
sub findiface($)
{
    my($mac) = @_;
    my($iface);

    open(FIF, FINDIF . " $mac |")
	or die "Cannot start " . FINDIF . ": $!";

    $iface = <FIF>;
    
    if (! close(FIF)) {
	return 0;
    }
    
    $iface =~ s/\n//g;
    return $iface;
}

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#
# Do router configuration stuff. This just writes a file for someone else
# to deal with.
#
sub dorouterconfig ()
{
    my @stuff   = ();
    my $routing = 0;
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    my %upmap   = ();
    my %downmap = ();
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    my $TM;

    $TM = OPENTMCC(TMCCCMD_ROUTING);
    while (<$TM>) {
	push(@stuff, $_);
    }
    close($TM);

    if (! @stuff) {
	return 0;
    }

    #
    # Look for router type. If none, then do not bother to write this file.
    # 
    foreach my $line (@stuff) {
	if (($line =~ /ROUTERTYPE=(.+)/) && ($1 ne "none")) {
	    $routing = 1;
	    last;
	}
    }
    if (! $routing) {
	return 0;
    }
    
    open(RC, ">" . TMROUTECONFIG)
	or die("Could not open " . TMROUTECONFIG . ": $!");

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    print RC "#!/bin/sh\n";
    print RC "# auto-generated by libsetup.pm, DO NOT EDIT\n";

    #
    # Now convert static route info into OS route commands
    # Also check for use of gated and remember it.
    #
    my $usegated = 0;
    my $pat;

    #
    # ROUTERTYPE=manual
    # ROUTE DEST=192.168.2.3 DESTTYPE=host DESTMASK=255.255.255.0 \
    #	NEXTHOP=192.168.1.3 COST=0
    #
    $pat = q(ROUTE DEST=([0-9\.]*) DESTTYPE=(\w*) DESTMASK=([0-9\.]*) );
    $pat .= q(NEXTHOP=([0-9\.]*) COST=([0-9]*));

    my $usemanual = 0;
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    foreach my $line (@stuff) {
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	if ($line =~ /ROUTERTYPE=(gated|ospf)/) {
	    $usegated = 1;
	} elsif ($line =~ /ROUTERTYPE=(manual|static)/) {
	    $usemanual = 1;
	} elsif ($usemanual && $line =~ /$pat/) {
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	    my $dip   = $1;
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	    my $rtype = $2;
	    my $dmask = $3;
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	    my $gate  = $4;
	    my $cost  = $5;
	    my $routearg = inet_ntoa(inet_aton($gate) & inet_aton($dmask));
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	    if (! defined($upmap{$routearg})) {
		$upmap{$routearg} = [];
		$downmap{$routearg} = [];
	    }
	    $rcline = os_routing_add_manual($rtype, $dip, $dmask, $gate,$cost);
	    push(@{$upmap{$routearg}}, $rcline);
	    $rcline = os_routing_del_manual($rtype, $dip, $dmask, $gate,$cost);
	    push(@{$downmap{$routearg}}, $rcline);
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	} else {
	    warn "*** WARNING: Bad routing line: $line\n";
	}
    }

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    print RC "case \"\$1\" in\n";
    foreach my $arg (keys(%upmap)) {
	print RC "  $arg)\n";
	print RC "    case \"\$2\" in\n";
	print RC "      up)\n";
	foreach my $rcline (@{$upmap{$arg}}) {
	    print RC "        $rcline\n";
	}
	print RC "      ;;\n";
	print RC "      down)\n";
	foreach my $rcline (@{$downmap{$arg}}) {
	    print RC "        $rcline\n";
	}
	print RC "      ;;\n";
	print RC "    esac\n";
	print RC "  ;;\n";
    }
    print RC "  enable)\n";

    #
    # Turn on IP forwarding
    #
    my $rcline = os_routing_enable_forward();
    print RC "    $rcline\n";

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    #
    # Finally, enable gated if desired.
    #
    # Note that we allow both manually-specified static routes and gated
    # though more work may be needed on the gated config files to make
    # this work (i.e., to import existing kernel routes).
    #
    if ($usegated) {
	$rcline = os_routing_enable_gated();
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	print RC "    $rcline\n";
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    }
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    print RC "  ;;\n";
    print RC "esac\n";
    print RC "exit 0\n";
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    close(RC);
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    chmod(0755, TMROUTECONFIG);
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    return 0;
}

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#
# Host names configuration (/etc/hosts). 
#
sub dohostnames ()
{
    my $TM;

    #
    # Start with fresh copy, since the hosts files is potentially updated
    # after the node boots via the update command.
    # 
    if (system($CP, "-f", TMHOSTS, HOSTSFILE) != 0) {
	printf STDERR "Could not copy default %s into place: $!\n", HOSTSFILE;
	return 1;
    }
    
    $TM = OPENTMCC(TMCCCMD_HOSTS);

    open(HOSTS, ">>" . HOSTSFILE)
	or die("Could not open $HOSTSFILE: $!");

    #
    # Now convert each hostname into hosts file representation and write
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    # it to the hosts file. Note that ALIASES is for backwards compat.
    # Should go away at some point.
    #
    my $pat  = q(NAME=([-\w\.]+) IP=([0-9\.]*) ALIASES=\'([-\w\. ]*)\');
    
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    while (<$TM>) {
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	if ($_ =~ /$pat/) {
	    my $name    = $1;
	    my $ip      = $2;
	    my $aliases = $3;
	    
	    my $hostline = os_etchosts_line($name, $ip, $aliases);
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	    print STDOUT "  $hostline\n";
	    print HOSTS  "$hostline\n";
	}
	else {
	    warn "*** WARNING: Bad hosts line: $_";
	}
    }
    close($TM);
    close(HOSTS);

    return 0;
}

sub doaccounts ()
{
    my %newaccounts = ();
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    my %newgroups   = ();
    my %deletes     = ();
    my %PWDDB;
    my %GRPDB;
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    my $TM = OPENTMCC(TMCCCMD_ACCT);

    #
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    # The strategy is to keep a record of all the groups and accounts
    # added by the testbed system so that we know what to remove. We
    # use a vanilla perl dbm for that, one for the groups and one for
    # accounts. 
    #
    # First just get the current set of groups/accounts from tmcd.
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    #
    while (<$TM>) {
	if ($_ =~ /^ADDGROUP NAME=([-\@\w.]+) GID=([0-9]+)/) {
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	    #
	    # Group info goes in the hash table.
	    #
	    if (REMOTE()) {
		$1 = "emu-$1";
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	    }
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	    $newgroups{"$1"} = $2
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	}
	elsif ($_ =~ /^ADDUSER LOGIN=([0-9a-z]+)/) {
	    #
	    # Account info goes in the hash table.
	    # 
	    $newaccounts{$1} = $_;
	    next;
	}
	else {
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	    warn "*** WARNING: Bad accounts line: $_\n";
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	}
    }
    close($TM);

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    dbmopen(%PWDDB, TMPASSDB, 0660) or
	die("Cannot open " . TMPASSDB . ": $!\n");
	
    dbmopen(%GRPDB, TMGROUPDB, 0660) or
	die("Cannot open " . TMGROUPDB . ": $!\n");

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    #
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    # Create any groups that do not currently exist. Add each to the
    # DB as we create it.
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    #
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    while (($group, $gid) = each %newgroups) {
	my ($exists,undef,$curgid) = getgrnam($group);
	
	if ($exists) {
	    if ($gid != $curgid) {
		warn "*** WARNING: $group/$gid mismatch with existing group\n";
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	    }
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	    next;
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	}
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	print "Adding group: $group/$gid\n";
	    
	if (os_groupadd($group, $gid)) {
	    warn "*** WARNING: Error adding new group $group/$gid\n";
	    next;
	}
	# Add to DB only if successful. 
	$GRPDB{$group} = $gid;
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    }

    #
722 723 724 725
    # Now remove the ones that we created previously, but are now no longer
    # in the group set (as told to us by the TMCD). Note, we cannot delete 
    # them directly from the hash since that would mess up the foreach loop,
    # so just stick them in temp and postpass it.
726
    #
727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742
    while (($group, $gid) = each %GRPDB) {
	if (defined($newgroups{$group})) {
	    next;
	}

	print "Removing group: $group/$gid\n";
	
	if (os_groupdel($group)) {
	    warn "*** WARNING: Error removing group $group/$gid\n";
	    next;
	}
	# Delete from DB only if successful. 
	$deletes{$group} = $gid;
    }
    while (($group, $gid) = each %deletes) {
	delete($GRPDB{$group});
743
    }
744 745 746 747
    %deletes = ();

    # Write the DB back out!
    dbmclose(%GRPDB);
748 749

    #
750 751 752 753 754 755 756
    # Repeat the same sequence for accounts, except we remove old accounts
    # first. 
    # 
    while (($login, $uid) = each %PWDDB) {
	if (defined($newaccounts{$login})) {
	    next;
	}
757

758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797
	my ($exists,undef,$curuid,undef,
	    undef,undef,undef,$homedir) = getpwnam($login);

	#
	# If the account is gone, someone removed it by hand. Remove it
	# from the DB so we do not keep trying.
	#
	if (! defined($exists)) {
	    warn "*** WARNING: Account for $login was already removed!\n";
	    $deletes{$login} = $login;
	    next;
	}

	#
	# Check for mismatch, just in case. If there is a mismatch remove it
	# from the DB so we do not keep trying.
	#
	if ($uid != $curuid) {
	    warn "*** WARNING: ".
		 "Account uid for $login has changed ($uid/$curuid)!\n";
	    $deletes{$login} = $login;
	    next;
	}
	
	print "Removing user: $login\n";
	
	if (os_userdel($login) != 0) {
	    warn "*** WARNING: Error removing user $login\n";
	    next;
	}

	#
	# Remove the home dir. 
	#
	# Must ask for the current home dir in case it came from pw.conf.
	#
	if (defined($homedir) &&
	    index($homedir, "/${login}")) {
	    if (os_homedirdel($login, $homedir) != 0) {
	        warn "*** WARNING: Could not remove homedir $homedir.\n";
798 799
	    }
	}
800 801 802 803 804 805 806
	
	# Delete from DB only if successful. 
	$deletes{$login} = $login;
    }
    
    while (($login, $foo) = each %deletes) {
	delete($PWDDB{$login});
807 808
    }

809
    my $pat = q(ADDUSER LOGIN=([0-9a-z]+) PSWD=([^:]+) UID=(\d+) GID=(.*) );
810 811 812 813
    $pat   .= q(ROOT=(\d) NAME="(.*)" HOMEDIR=(.*) GLIST="(.*)" );
    $pat   .= q(EMULABPUBKEY="(.*)" HOMEPUBKEY="(.*)");

    while (($login, $info) = each %newaccounts) {
814
	if ($info =~ /$pat/) {
815 816 817 818 819 820 821
	    $pswd  = $2;
	    $uid   = $3;
	    $gid   = $4;
	    $root  = $5;
	    $name  = $6;
	    $hdir  = $7;
	    $glist = $8;
822 823
	    $ekey  = $9;
	    $hkey  = $10;
824 825 826
	    if ( $name =~ /^(([^:]+$|^))$/ ) {
		$name = $1;
	    }
827 828 829
	    print "User: $login/$uid/$gid/$root/$name/$hdir/$glist\n";

	    my ($exists,undef,$curuid) = getpwnam($login);
830 831

	    if ($exists) {
832 833 834 835 836 837 838 839 840 841 842
		if (!defined($PWDDB{$login})) {
		    warn "*** WARNING: ".
			 "Skipping since $login existed before EmulabMan!\n";
		    next;
		}
		if ($curuid != $uid) {
		    warn "*** WARNING: ".
			 "$login/$uid uid mismatch with existing login.\n";
		    next;
		}
		print "Updating $login login info.\n";
843 844 845
		os_usermod($login, $gid, "$glist", $root);
		next;
	    }
846
	    print "Adding $login account.\n";
847 848 849 850 851 852

	    if (os_useradd($login, $uid, $gid, $pswd, 
			   "$glist", $hdir, $name, $root)) {
		warn "*** WARNING: Error adding new user $login\n";
		next;
	    }
853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896
	    # Add to DB only if successful. 
	    $PWDDB{$login} = $uid;

	    #
	    # Create .ssh dir and populate it with an authkeys file.
	    # Must ask for the current home dir since we rely on pw.conf.
	    #
	    my (undef,undef,undef,undef,
		undef,undef,undef,$homedir) = getpwuid($uid);
	    my $sshdir = "$homedir/.ssh";
	    
	    if (! -e $sshdir && ($ekey ne "" || $hkey ne "")) {
		if (! mkdir($sshdir, 0700)) {
		    warn("*** WARNING: Could not mkdir $sshdir: $!\n");
		    next;
		}
		if (!chown($uid, $gid, $sshdir)) {
		    warn("*** WARNING: Could not chown $sshdir: $!\n");
		    next;
		}
		if (!open(AUTHKEYS, "> $sshdir/authorized_keys")) {
		    warn("*** WARNING: Could not open $sshdir/keys: $!\n");
		    next;
		}
		if ($ekey ne "") {
		    print AUTHKEYS "$ekey\n";
		}
		if ($hkey ne "") {
		    print AUTHKEYS "$hkey\n";
		}
		close(AUTHKEYS);

		if (!chown($uid, $gid, "$sshdir/authorized_keys")) {
		    warn("*** WARNING: Could not chown $sshdir/keys: $!\n");
		    next;
		}
		if (!chmod(0600, "$sshdir/authorized_keys")) {
		    warn("*** WARNING: Could not chmod $sshdir/keys: $!\n");
		    next;
		}
	    }
	}
	else {
	    warn("*** Bad accounts line: $info\n");
897 898
	}
    }
899 900 901
    # Write the DB back out!
    dbmclose(%PWDDB);

902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926
    return 0;
}

#
# RPM configuration. 
#
sub dorpms ()
{
    my @rpms = ();
    
    my $TM = OPENTMCC(TMCCCMD_RPM);
    while (<$TM>) {
	push(@rpms, $_);
    }
    close($TM);

    if (! @rpms) {
	return 0;
    }
    
    open(RPM, ">" . TMRPM)
	or die("Could not open " . TMRPM . ": $!");
    print RPM "#!/bin/sh\n";
    
    foreach my $rpm (@rpms) {
927
	if ($rpm =~ /RPM=(.+)/) {
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965
	    my $rpmline = os_rpminstall_line($1);
		    
	    print STDOUT "  $rpmline\n";
	    print RPM    "echo \"Installing RPM $1\"\n";
	    print RPM    "$rpmline\n";
	}
	else {
	    warn "*** WARNING: Bad RPMs line: $rpm";
	}
    }
    close(RPM);
    chmod(0755, TMRPM);

    return 0;
}

#
# TARBALL configuration. 
#
sub dotarballs ()
{
    my @tarballs = ();

    my $TM = OPENTMCC(TMCCCMD_TARBALL);
    while (<$TM>) {
	push(@tarballs, $_);
    }
    close($TM);

    if (! @tarballs) {
	return 0;
    }
    
    open(TARBALL, ">" . TMTARBALLS)
	or die("Could not open " . TMTARBALLS . ": $!");
    print TARBALL "#!/bin/sh\n";
    
    foreach my $tarball (@tarballs) {
966
	if ($tarball =~ /DIR=(.+)\s+TARBALL=(.+)/) {
967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003
	    my $tbline = sprintf($TARINSTALL, $1, $2);
		    
	    print STDOUT  "  $tbline\n";
	    print TARBALL "echo \"Installing Tarball $2 in dir $1 \"\n";
	    print TARBALL "$tbline\n";
	}
	else {
	    warn "*** WARNING: Bad Tarballs line: $tarball";
	}
    }
    close(TARBALL);
    chmod(0755, TMTARBALLS);

    return 0;
}

#
# Experiment startup Command.
#
sub dostartupcmd ()
{
    my $startupcmd;
    
    my $TM = OPENTMCC(TMCCCMD_STARTUP);
    $_ = <$TM>;
    if (defined($_)) {
	$startupcmd = $_;
    }
    close($TM);

    if (! $startupcmd) {
	return 0;
    }
    
    open(RUN, ">" . TMSTARTUPCMD)
	or die("Could not open $TMSTARTUPCMD: $!");
    
1004
    if ($startupcmd =~ /CMD=(\'.+\') UID=([0-9a-z]+)/) {
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017
	print  STDOUT "  Will run $1 as $2\n";
	print  RUN    "$startupcmd";
    }
    else {
	warn "*** WARNING: Bad startupcmd line: $startupcmd";
    }

    close(RUN);
    chmod(0755, TMSTARTUPCMD);

    return 0;
}

1018 1019 1020 1021 1022 1023
sub dotrafficconfig()
{
    my $didopen = 0;
    my $pat;
    my $TM;
    my $boss;
1024
    my $startnse = 0;
1025 1026 1027 1028 1029 1030 1031 1032 1033 1034

    #
    # Kinda ugly, but there is too much perl goo included by Socket to put it
    # on the MFS. 
    # 
    if (MFS()) {
	return 1;
    }
    require Socket;
    import Socket;
1035 1036 1037 1038
    
    $TM = OPENTMCC(TMCCCMD_BOSSINFO);
    ($boss) = split(" ", <$TM>);
    close($TM);
1039 1040 1041 1042 1043 1044
    my ($pid, $eid, $vname) = check_status();

    my $cmdline = "$SETUPDIR/trafgen -s $boss";
    if ($pid) {
	$cmdline .= " -E $pid/$eid";
    }
1045 1046 1047

    $TM = OPENTMCC(TMCCCMD_TRAFFIC);

1048
    $pat  = q(TRAFGEN=([-\w.]+) MYNAME=([-\w.]+) MYPORT=(\d+) );
1049
    $pat .= q(PEERNAME=([-\w.]+) PEERPORT=(\d+) );
1050
    $pat .= q(PROTO=(\w+) ROLE=(\w+) GENERATOR=(\w+));
1051 1052 1053 1054 1055

    while (<$TM>) {
	if ($_ =~ /$pat/) {
	    #
	    # The following is specific to the modified TG traffic generator:
1056 1057 1058 1059 1060
	    #
	    #  trafgen [-s serverip] [-p serverport] [-l logfile] \
	    #	     [ -N name ] [-P proto] [-R role] [ -E pid/eid ] \
	    #	     [ -S srcip.srcport ] [ -T targetip.targetport ]
	    #
1061 1062
	    # N.B. serverport is not needed right now
	    #
1063 1064 1065 1066 1067 1068 1069 1070
	    my $name = $1;
	    my $ownaddr = inet_ntoa(my $ipaddr = gethostbyname($2));
	    my $ownport = $3;
	    my $peeraddr = inet_ntoa($ipaddr = gethostbyname($4));
	    my $peerport = $5;
	    my $proto = $6;
	    my $role = $7;
	    my $generator = $8;
1071
	    my $target;
1072
	    my $source;
1073

1074 1075 1076
	    # Skip if not specified as a TG generator. At some point
	    # work in Shashi's NSE work.
	    if ($generator ne "TG") {
1077 1078 1079 1080 1081 1082 1083
		$startnse = 1;
		if (! $didopen) {
		    open(RC, ">" . TMTRAFFICCONFIG)
			or die("Could not open " . TMTRAFFICCONFIG . ": $!");
		    print RC "#!/bin/sh\n";
		    $didopen = 1;
		}
1084 1085 1086
		next;
	    }

1087 1088
	    if ($role eq "sink") {
		$target = "$ownaddr.$ownport";
1089
		$source = "$peeraddr.$peerport";
1090 1091 1092
	    }
	    else {
		$target = "$peeraddr.$peerport";
1093
		$source = "$ownaddr.$ownport";
1094 1095 1096 1097 1098 1099 1100 1101
	    }

	    if (! $didopen) {
		open(RC, ">" . TMTRAFFICCONFIG)
		    or die("Could not open " . TMTRAFFICCONFIG . ": $!");
		print RC "#!/bin/sh\n";
		$didopen = 1;
	    }
1102
	    print RC "$cmdline -N $name -S $source -T $target -P $proto -R $role >/tmp/${name}-${pid}-${eid}.debug 2>&1 &\n";
1103 1104 1105 1106 1107
	}
	else {
	    warn "*** WARNING: Bad traffic line: $_";
	}
    }
1108 1109 1110 1111 1112

    if( $startnse ) {
	print RC "$SETUPDIR/startnse &\n";
    }
    
1113 1114
    close($TM);
    if ($didopen) {
1115
	printf RC "%s %s\n", TMCC(), TMCCCMD_READY();
1116 1117 1118 1119 1120 1121
	close(RC);
	chmod(0755, TMTRAFFICCONFIG);
    }
    return 0;
}

1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240
sub dotunnels()
{
    my @tunnels;
    my $pat;
    my $TM;
    my $didserver = 0;

    #
    # Kinda ugly, but there is too much perl goo included by Socket to put it
    # on the MFS. 
    # 
    if (MFS()) {
	return 1;
    }
    require Socket;
    import Socket;
    
    $TM = OPENTMCC(TMCCCMD_TUNNEL);
    while (<$TM>) {
	push(@tunnels, $_);
    }
    close($TM);

    if (! @tunnels) {
	return 0;
    }
    my ($pid, $eid, $vname) = check_status();

    open(RC, ">" . TMTUNNELCONFIG)
	or die("Could not open " . TMTUNNELCONFIG . ": $!");
    print RC "#!/bin/sh\n";
    print RC "kldload if_tap\n";

    open(CONF, ">" . TMVTUNDCONFIG)
	or die("Could not open " . TMVTUNDCONFIG . ": $!");

    print(CONF
	  "options {\n".
	  "  ifconfig    /sbin/ifconfig;\n".
	  "  route       /sbin/route;\n".
	  "}\n".
	  "\n".
	  "default {\n".
	  "  persist     yes;\n".
	  "  stat        yes;\n".
	  "  keepalive   yes;\n".
	  "  type        ether;\n".
	  "}\n".
	  "\n");
    
    $pat  = q(TUNNEL=([-\w.]+) ISSERVER=(\d) PEERIP=([-\w.]+) );
    $pat .= q(PEERPORT=(\d+) PASSWORD=([-\w.]+) );
    $pat .= q(ENCRYPT=(\d) COMPRESS=(\d) INET=([-\w.]+) );
    $pat .= q(MASK=([-\w.]+) PROTO=([-\w.]+));

    foreach my $tunnel (@tunnels) {
	if ($tunnel =~ /$pat/) {
	    #
	    # The following is specific to vtund!
	    #
	    my $name     = $1;
	    my $isserver = $2;
	    my $peeraddr = $3;
	    my $peerport = $4;
	    my $password = $5;
	    my $encrypt  = ($6 ? "yes" : "no");
	    my $compress = ($7 ? "yes" : "no");
	    my $inetip   = $8;
	    my $mask     = $9;
	    my $proto    = $10;
	    my $routearg = inet_ntoa(inet_aton($inetip) & inet_aton($mask));

	    my $cmd = "$VTUND -n -P $peerport -f ". TMVTUNDCONFIG;

	    if ($isserver) {
		if (!$didserver) {
		    print RC
			"$cmd -s >/tmp/vtund-${pid}-${eid}.debug 2>&1 &\n";
		    $didserver = 1;
		}
	    }
	    else {
		print RC "$cmd $name $peeraddr ".
		    " >/tmp/vtun-${pid}-${eid}-${name}.debug 2>&1 &\n";
	    }
	    #
	    # Sheesh, vtund fails if it sees "//" in a path. 
	    #
	    my $config = TMROUTECONFIG;
	    $config =~ s/\/\//\//g;
	    
	    print(CONF
		  "$name {\n".
		  "  password      $password;\n".
		  "  compress      $compress;\n".
		  "  encrypt       $encrypt;\n".
		  "  proto         $proto;\n".
		  "\n".
		  "  up {\n".
		  "    # Connection is Up\n".
		  "    ifconfig \"%% $inetip netmask $mask\";\n".
		  "    program " . $config . " \"$routearg up\" wait;\n".
		  "  };\n".
		  "  down {\n".
		  "    # Connection is Down\n".
		  "    ifconfig \"%% down\";\n".
		  "    program " . $config . " \"$routearg down\" wait;\n".
		  "  };\n".
		  "}\n\n");
	}
	else {
	    warn "*** WARNING: Bad tunnel line: $tunnel";
	}
    }

    close(RC);
    chmod(0755, TMTUNNELCONFIG);
    return 0;
}
1241

1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258
#
# Boot Startup code. This is invoked from the setup OS dependent script,
# and this fires up all the stuff above.
#
sub bootsetup()
{
    #
    # Inform the master that we have rebooted.
    #
    inform_reboot();

    #
    # Check allocation. Exit now if not allocated.
    #
    print STDOUT "Checking Testbed reservation status ... \n";
    if (! check_status()) {
	print STDOUT "  Free!\n";
1259
	cleanup_node(1);
1260 1261 1262 1263
	return 0;
    }
    print STDOUT "  Allocated! $pid/$eid/$vname\n";

1264 1265 1266 1267 1268
    #
    # Cleanup node. Flag indicates to gently clean ...
    # 
    cleanup_node(0);

1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285
    #
    # Setup a nicknames file. 
    #
    create_nicknames();

    #
    # Mount the project and user directories
    #
    print STDOUT "Mounting project and home directories ... \n";
    domounts();

    #
    # Do account stuff.
    # 
    print STDOUT "Checking Testbed group/user configuration ... \n";
    doaccounts();

1286 1287 1288 1289 1290 1291
    if (! MFS()) {
	#
	# Okay, lets find out about interfaces.
	#
	print STDOUT "Checking Testbed interface configuration ... \n";
	doifconfig();
1292

1293 1294 1295 1296 1297 1298
        #
        # Do tunnels
        # 
        print STDOUT "Checking Testbed tunnel configuration ... \n";
        dotunnels();

1299 1300 1301 1302 1303
	#
	# Host names configuration (/etc/hosts). 
	#
	print STDOUT "Checking Testbed hostnames configuration ... \n";
	dohostnames();
1304

1305 1306 1307 1308 1309
	#
	# Router Configuration.
	#
	print STDOUT "Checking Testbed routing configuration ... \n";
	dorouterconfig();
1310

1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328
	#
	# Traffic generator Configuration.
	#
	print STDOUT "Checking Testbed traffic generation configuration ...\n";
	dotrafficconfig();

	#
	# RPMS
	# 
	print STDOUT "Checking Testbed RPM configuration ... \n";
	dorpms();

	#
	# Tar Balls
	# 
	print STDOUT "Checking Testbed Tarball configuration ... \n";
	dotarballs();
    }
1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363

    #
    # Experiment startup Command.
    #
    print STDOUT "Checking Testbed Experiment Startup Command ... \n";
    dostartupcmd();

    #
    # OS specific stuff
    #
    os_setup();

    return 0;
}

#
# These are additional support routines for other setup scripts.
#
#
# Node update. This gets fired off after reboot to update accounts,
# mounts, etc. Its the start of shared node support. Quite rough at
# the moment. 
#
sub nodeupdate()
{
    #
    # Check allocation. If the node is now free, then do a cleanup
    # to reset the password files. The node should have its disk
    # reloaded to be safe, at the very least a reboot, but thats for
    # the future. We also need to kill processes belonging to people
    # whose accounts have been killed. Need to check the atq also for
    # queued commands.
    #
    if (! check_status()) {
	print "Node is free. Cleaning up password and group files.\n";
1364
	cleanup_node(1);
1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388
	return 0;
    }

    #
    # Mount the project and user directories
    #
    print STDOUT "Mounting project and home directories ... \n";
    domounts();

    #
    # Host names configuration (/etc/hosts). 
    #
    print STDOUT "Checking Testbed hostnames configuration ... \n";
    dohostnames();

    #
    # Do account stuff.
    # 
    print STDOUT "Checking Testbed group/user configuration ... \n";
    doaccounts();

    return 0;
}

1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445
# Remote node update. This gets fired off after reboot to update
# accounts, mounts, etc. Its the start of shared node support. Quite
# rough at the moment.
#
sub remotenodeupdate()
{
    #
    # Do account stuff.
    # 
    print STDOUT "Checking Testbed group/user configuration ... \n";
    doaccounts();

    return 0;
}

#
# Remote Node virtual node setup.
#
sub remotenodevnodesetup($)
{
    my ($vid) = @_;

    #
    # Set global vnodeid for tmcc commands.
    #
    $vnodeid = $vid;

    #
    # Make the directory where all this stuff is going to go.
    #
    if (! -e TMVNODEDIR) {
	mkdir(TMVNODEDIR, 0755) or
	    die("*** $0:\n".
		"    Could not mkdir " . TMVNODEDIR . ": $!\n");
    }
    
    #
    # Do tunnels
    # 
    print STDOUT "Checking Testbed tunnel configuration ... \n";
    dotunnels();

    #
    # Router Configuration.
    #
    print STDOUT "Checking Testbed routing configuration ... \n";
    dorouterconfig();

    #
    # Traffic generator Configuration.
    #
    print STDOUT "Checking Testbed traffic generation configuration ...\n";
    dotrafficconfig();

    return 0;
}

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#
# Report startupcmd status back to the TMCC. Called by the runstartup
# script. 
#
sub startcmdstatus($)
{
    my($status) = @_;

    RUNTMCC(TMCCCMD_STARTSTAT, "$status");
    return 0;
}

#
# Install deltas. Return 0 if nothing happened. Return -1 if there was
# an error. Return 1 if deltas installed, which tells the caller to reboot.
#
# This is going to get invoked very early in the boot process, possibly
# before the normal client initialization. So we have to do a few things
# to make things are consistent. 
#
sub install_deltas ()
{
    my @deltas = ();
    my $reboot = 0;

    #
    # Inform the master that we have rebooted.
    #
    inform_reboot();

    #
    # Check allocation. Exit now if not allocated.
    #
    if (! check_status()) {
	return 0;
    }

    #
    # Now do the actual delta install.
    # 
    my $TM = OPENTMCC(TMCCCMD_DELTA);
    while (<$TM>) {
	push(@deltas, $_);
    }
    close($TM);

    #
    # No deltas. Just exit and let the boot continue.
    #
    if (! @deltas) {
	return 0;
    }

    #
    # Mount the project directory.
    #
    domounts();

    #
    # Install all the deltas, and hope they all install okay. We reboot
    # if any one does an actual install (they may already be installed).
    # If any fails, then give up.
    # 
    foreach $delta (@deltas) {
1510
	if ($delta =~ /DELTA=(.+)/) {
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	    print STDOUT  "Installing DELTA $1 ...\n";

	    system(sprintf($DELTAINSTALL, $1));
	    my $status = $? >> 8;
	    if ($status == 0) {
		$reboot = 1;
	    }
	    else {
		if ($status < 0) {
		    print STDOUT "Failed to install DELTA $1. Help!\n";
		    return -1;
		}
	    }
	}
    }
    return $reboot;
}

#
# Early on in the boot, we want to reset the hostname. This gets the
# nickname and returns it. 
#
# This is going to get invoked very early in the boot process, before the
# normal client initialization. So we have to do a few things to make
# things are consistent. 
#
sub whatsmynickname()
{
    #
    # Inform the master that we have rebooted. THIS MUST BE DONE!
    #
    inform_reboot();

    #
    # Check allocation. Exit now if not allocated.
    #
    if (! check_status()) {
	return 0;
    }

    return "$vname.$eid.$pid";
}

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