GeniCMV2.pm.in 34.2 KB
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#!/usr/bin/perl -wT
#
# GENIPUBLIC-COPYRIGHT
# Copyright (c) 2008-2009 University of Utah and the Flux Group.
# All rights reserved.
#
package GeniCMV2;

#
# The server side of the CM interface on remote sites. Also communicates
# with the GMC interface at Geni Central as a client.
#
use strict;
use Exporter;
use vars qw(@ISA @EXPORT);

@ISA    = "Exporter";
@EXPORT = qw ( );

# Must come after package declaration!
use lib '@prefix@/lib';
use GeniDB;
use Genixmlrpc;
use GeniResponse;
use GeniTicket;
use GeniCredential;
use GeniCertificate;
use GeniSlice;
use GeniAggregate;
use GeniAuthority;
use GeniSliver;
use GeniUser;
use GeniRegistry;
use GeniUtil;
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use GeniCM;
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use GeniHRN;
use libtestbed qw(SENDMAIL);
use emutil;
# Hate to import all this crap; need a utility library.
use libdb qw(TBGetSiteVar EXPTSTATE_SWAPPED EXPTSTATE_ACTIVE TBOPSPID
	     TBDB_NODESTATE_TBFAILED);
use User;
use Node;
use OSinfo;
use Image;
use Interface;
use English;
use Data::Dumper;
use XML::Simple;
use Date::Parse;
use POSIX qw(strftime tmpnam);
use Time::Local;
use Experiment;
use VirtExperiment;
use Compress::Zlib;
use MIME::Base64;

# Configure variables
my $TB		   = "@prefix@";
my $TBOPS          = "@TBOPSEMAIL@";
my $TBAPPROVAL     = "@TBAPPROVALEMAIL@";
my $TBAUDIT   	   = "@TBAUDITEMAIL@";
my $BOSSNODE       = "@BOSSNODE@";
my $OURDOMAIN      = "@OURDOMAIN@";
my $PGENIDOMAIN    = "@PROTOGENI_DOMAIN@";
my $CREATEEXPT     = "$TB/bin/batchexp";
my $ENDEXPT        = "$TB/bin/endexp";
my $NALLOC	   = "$TB/bin/nalloc";
my $NFREE	   = "$TB/bin/nfree";
my $AVAIL	   = "$TB/sbin/avail";
my $PTOPGEN	   = "$TB/libexec/ptopgen";
my $TBSWAP	   = "$TB/bin/tbswap";
my $SWAPEXP	   = "$TB/bin/swapexp";
my $PLABSLICE	   = "$TB/sbin/plabslicewrapper";
my $NAMEDSETUP     = "$TB/sbin/named_setup";
my $VNODESETUP     = "$TB/sbin/vnode_setup";
my $GENTOPOFILE    = "$TB/libexec/gentopofile";
my $TARFILES_SETUP = "$TB/bin/tarfiles_setup";
my $MAPPER         = "$TB/bin/mapper";
my $VTOPGEN        = "$TB/bin/vtopgen";
my $SNMPIT         = "$TB/bin/snmpit";
my $PRERENDER      = "$TB/libexec/vis/prerender";
my $EMULAB_PEMFILE = "@prefix@/etc/genicm.pem";

my $API_VERSION = 2;

#
# Tell the client what API revision we support.  The correspondence
# between revision numbers and API features is to be specified elsewhere.
# No credentials are required.
#
sub GetVersion()
{
    return GeniResponse->Create( GENIRESPONSE_SUCCESS, $API_VERSION );
}

#
# Respond to a Resolve request. 
#
sub Resolve($)
{
    my ($argref) = @_;
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    my $credentials = $argref->{'credentials'};
    my $urn         = $argref->{'urn'};
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    my $admin       = 0;
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    if (! (defined($credentials) && defined($urn))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    if (! GeniHRN::IsValid($urn)) {
	return GeniResponse->MalformedArgsResponse("Invalid URN");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

    # The URN encodes the type.
    my ($auth,$type,$id) = GeniHRN::Parse($urn);
    return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				"Authority mismatch")
	if ($auth ne $OURDOMAIN);
    $type = lc($type);
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    #
    # This is a convenience for testing. If a local user and that
    # user is an admin person, then do whatever it says. This is
    # easier then trying to do this with credential privs.
    #
    my $user = GeniUser->Lookup($credential->owner_uuid(), 1);
    if (defined($user) && $user->IsLocal() && $user->admin()) {
	$admin = 1;
    }
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    if ($type eq "node") {
	my $node = GeniCM::LookupNode($urn);
	if (! defined($node)) {
	    return GeniResponse->Create(GENIRESPONSE_SEARCHFAILED,
					undef, "Nothing here by that name");
	}
	my $rspec = GeniCM::GetAdvertisement(0, $node->node_id());
	if (! defined($rspec)) {
	    return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
					"Could not start avail");
	}
	# Return a blob.
	my $blob = { "hrn"          => "${PGENIDOMAIN}." . $node->node_id(),
		     "uuid"         => $node->uuid(),
		     "role"	    => $node->role(),
		     "hostname"     => $node->node_id() . ".${OURDOMAIN}",
		     "physctrl"     => 
			 Interface->LookupControl($node->phys_nodeid())->IP(),
		     "urn"          => GeniHRN::Generate($OURDOMAIN,
							 "node",
							 $node->node_id()),
		     "rspec"        => $rspec
		   };

	return GeniResponse->Create(GENIRESPONSE_SUCCESS, $blob);
    }
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    if ($type eq "slice") {
	my $slice = GeniSlice->Lookup($urn);
	if (!defined($slice)) {
	    return GeniResponse->Create(GENIRESPONSE_SEARCHFAILED,
					undef, "Nothing here by that name");
	}
	#
	# In this implementation, the caller must hold a valid slice
	# credential for the slice being looked up. 
	#
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	if (! ($admin || $slice->uuid() eq $credential->target_uuid())) {
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	    return GeniResponse->Create(GENIRESPONSE_FORBIDDEN());
	}
	# Return a blob.
	my $blob = { "urn"          => $urn };

	my $aggregate = GeniAggregate->SliceAggregate($slice);
	if (defined($aggregate)) {
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	    $blob->{'sliver_urn'} = $aggregate->urn();
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	}
	my $ticket = GeniTicket->SliceTicket($slice);
	if (defined($ticket)) {
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	    $blob->{'ticket_urn'} = $ticket->urn();
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	}
	return GeniResponse->Create(GENIRESPONSE_SUCCESS, $blob);
    }
    if ($type eq "sliver") {
	my $aggregate = GeniAggregate->Lookup($urn);
	if (!defined($aggregate)) {
	    return GeniResponse->Create(GENIRESPONSE_SEARCHFAILED,
					undef, "Nothing here by that name");
	}
	#
	# In this implementation, the caller must hold a valid slice
	# or sliver credential for the slice being looked up. 
	#
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	if (! ($admin ||
	       $aggregate->uuid() eq $credential->target_uuid() ||
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	       $aggregate->slice_uuid() eq $credential->target_uuid())) {
	    return GeniResponse->Create(GENIRESPONSE_FORBIDDEN);
	}
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	my $manifest = $aggregate->GetManifest(1);
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	if (!defined($aggregate)) {
	    return GeniResponse->Create(GENIRESPONSE_ERROR);
	}
	# Return a blob.
	my $blob = { "urn"          => $urn,
		     "manifest"     => $manifest,
		 };
	return GeniResponse->Create(GENIRESPONSE_SUCCESS, $blob);
    }
    if ($type eq "ticket") {
	my $ticket = GeniTicket->Lookup($urn);
	if (!defined($ticket)) {
	    return GeniResponse->Create(GENIRESPONSE_SEARCHFAILED,
					undef, "Nothing here by that name");
	}
	#
	# In this implementation, the caller must hold a valid slice
	# or sliver credential to get the ticket.
	#
	my $slice = GeniSlice->Lookup($ticket->slice_uuid());
	if (!defined($slice)) {
	    print STDERR "Could not find slice for $ticket\n";
	    return GeniResponse->Create(GENIRESPONSE_ERROR);
	}
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	if (! ($admin || $slice->uuid() eq $credential->target_uuid())) {
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	    #
	    # See if its the sliver credential. 
	    #
	    my $aggregate = GeniAggregate->SliceAggregate($slice);
	    if (!defined($aggregate) ||
		$aggregate->uuid() ne $credential->target_uuid()) {
		return GeniResponse->Create(GENIRESPONSE_FORBIDDEN());
	    }
	}
	return GeniResponse->Create(GENIRESPONSE_SUCCESS, $ticket->asString());
    }
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    return GeniResponse->Create(GENIRESPONSE_UNSUPPORTED, undef,
				"Cannot resolve $type at this authority");
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}

#
# Discover resources on this component, returning a resource availablity spec
#
sub DiscoverResources($)
{
    my ($argref) = @_;
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    my $credentials = $argref->{'credentials'};
    my $available   = $argref->{'available'} || 0;
    my $compress    = $argref->{'compress'} || 0;

    if (! (defined($credentials))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));
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    return GeniCM::DiscoverResourcesAux($available, $compress);
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}

#
# Create a Sliver.
#
sub CreateSliver($)
{
    my ($argref) = @_;
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    my $slice_urn    = $argref->{'slice_urn'};
    my $rspecstr     = $argref->{'rspec'};
    my $credentials  = $argref->{'credentials'};
    my $keys         = $argref->{'keys'};
    my $impotent     = $argref->{'impotent'} || 0;
    
    # For now, I am not worrying about the slice_urn argument.
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    if (! (defined($credentials) &&
	   defined($slice_urn) && defined($rspecstr))) {
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	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
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    if (! ($rspecstr =~ /^[\040-\176\012\015\011]+$/)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in rspec");
    }
    if (! GeniHRN::IsValid($slice_urn)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in URN");
    }
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    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));
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    #
    # In this implementation, the user must provide a slice credential,
    # so we ignore the slice_urn. For CreateSliver(), the slice must not
    # be instantiated.
    #
    my ($slice,$aggregate) = Credential2SliceAggregate($credential);
    if (defined($slice)) {
	if ($slice_urn ne $slice->urn()) {
	    return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
					"Credential does not match the URN");
	}
	if (defined($aggregate)) {
	    return GeniResponse->Create(GENIRESPONSE_REFUSED, undef,
					"Must delete existing slice first");
	}
    }
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    my $rspec = GeniCM::GetTicketAux($credential,
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				     $rspecstr, 0, $impotent, 1, 0, undef);
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    return $rspec
	if (GeniResponse::IsResponse($rspec));

    my $response = GeniCM::SliverWorkAux($credential,
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					 $rspec, $keys, 0, $impotent, 1, 0);
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    if (GeniResponse::IsError($response)) {
	#
	# We have to make sure there is nothing left over since there
	# is no actual ticket, so the resources will not get cleaned
	# up by the daemon. This is mostly cause I am reaching into
	# the V1 code, and its messy.
	#
	my $slice = GeniSlice->Lookup($credential->target_uuid());
	if ($slice->Lock() != 0) {
	    print STDERR "CreateSliver: Could not lock $slice before delete\n";
	    return $response;
	}
	if (defined($slice)) {
	    GeniCM::CleanupDeadSlice($slice, 1);
	}
    }
    #
    # Leave the slice intact on error, so we can go look at it. 
    #
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    $slice = GeniSlice->Lookup($credential->target_uuid());
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    if (!defined($slice)) {
	print STDERR "CreateSliver: Could not find slice for $credential\n";
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "Internal Error");
    }
    if ($slice->Lock() != 0) {
	print STDERR "CreateSliver: Could not lock $slice before start\n";
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "Internal Error");
    }
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    $aggregate = GeniAggregate->SliceAggregate($slice);
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    if (!defined($aggregate)) {
	print STDERR "CreateSliver: Could not find aggregate for $slice\n";
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "Internal Error");
    }
    if ($aggregate->Start() != 0) {
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "Could not start sliver");
    }
    $slice->UnLock();
    return $response;
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}

#
# Delete a Sliver.
#
sub DeleteSliver($)
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{
    my ($argref) = @_;
    my $sliver_urn   = $argref->{'sliver_urn'};
    my $credentials  = $argref->{'credentials'};
    my $impotent     = $argref->{'impotent'} || 0;

    if (! (defined($credentials) && defined($sliver_urn))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    if (! GeniHRN::IsValid($sliver_urn)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in URN");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

    #
    # In this implementation, the user must provide a slice or sliver
    # credential
    #
    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (! (defined($slice) && defined($aggregate))) {
	return GeniResponse->Create(GENIRESPONSE_SEARCHFAILED, undef,
				    "Sliver does not exist");
    }
    if ($sliver_urn ne $aggregate->urn()) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
				    "Credential does not match the URN");
    }

    #
    # We need this below to sign the ticket.
    #
    my $authority = GeniCertificate->LoadFromFile($EMULAB_PEMFILE);
    if (!defined($authority)) {
	print STDERR " Could not get uuid from $EMULAB_PEMFILE\n";
	return GeniResponse->Create(GENIRESPONSE_ERROR);
	
    }
    #
    # We need the user to sign the new ticket to. 
    #
    my $user = GeniUser->Lookup($credential->owner_uuid(), 1);
    if (!defined($user)) {
	$user = GeniCM::CreateUserFromCertificate($credential->owner_cert());
	if (!defined($user)) {
	    print STDERR "Could not create user from $credential\n";
	    return GeniResponse->Create(GENIRESPONSE_ERROR);
	}
    }
    
    my $response = GeniCM::DeleteSliverAux($credential, $impotent, 1);
    return $response
	if (GeniResponse::IsResponse($response));

    #
    # In the v2 API, return a new ticket for the resources
    # (which were not released). As with all tickets, it will
    # expire very quickly. 
    #
    #
    # Create a new ticket from the manifest.
    #
    my $manifest = $aggregate->GetManifest(0);
    if (!defined($manifest)) {
	print STDERR "No manifest found for $aggregate\n";
	$response = GeniResponse->Create(GENIRESPONSE_ERROR);
	goto bad;
    }
    my $ticket = GeniTicket->Create($authority, $user, $manifest);
    if (!defined($ticket)) {
	print STDERR "Could not create new ticket for $slice\n";
	$response = GeniResponse->Create(GENIRESPONSE_ERROR);
	goto bad;
    }
    $ticket->SetSlice($slice->uuid());
    
    if ($ticket->Sign()) {
	$ticket->Delete();
	print STDERR "Could not sign new ticket $ticket\n";
	$response = GeniResponse->Create(GENIRESPONSE_ERROR);
	goto bad;
    }
    if ($ticket->Store()) {
	$ticket->Delete();
	print STDERR "Could not store new ticket $ticket\n";
	$response = GeniResponse->Create(GENIRESPONSE_ERROR);
	goto bad;
    }
    my $slice_uuid = $slice->uuid();
    DBQueryWarn("delete from geni_manifests ".
		"where slice_uuid='$slice_uuid'");
    $slice->UnLock();
    return GeniResponse->Create(GENIRESPONSE_SUCCESS, $ticket->asString());

  bad:
    if (GeniCM::CleanupDeadSlice($slice) != 0) {
	print STDERR "Could not cleanup slice\n";
    }
    return $response;
}

#
# Delete a Slice
#
sub DeleteSlice($)
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{
    my ($argref) = @_;
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    my $slice_urn    = $argref->{'slice_urn'};
    my $credentials  = $argref->{'credentials'};
    my $impotent     = $argref->{'impotent'} || 0;

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    if (! (defined($credentials) && defined($slice_urn))) {
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	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
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    if (! GeniHRN::IsValid($slice_urn)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in URN");
    }
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    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));
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    #
    # In this implementation, the user must provide a slice credential.
    #
    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (! defined($slice)) {
	return GeniResponse->Create(GENIRESPONSE_SEARCHFAILED, undef,
				    "No such slice here");
    }
    if ($slice_urn ne $slice->urn()) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
				    "Credential does not match the URN");
    }
    if ($slice->Lock() != 0) {
	return GeniResponse->BusyResponse();
    }
    if (GeniCM::CleanupDeadSlice($slice) != 0) {
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "Could not cleanup slice");
    }
    return GeniResponse->Create(GENIRESPONSE_SUCCESS);
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}

#
# Get a Sliver (credential)
#
sub GetSliver($)
{
    my ($argref) = @_;
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    my $slice_urn    = $argref->{'slice_urn'};
    my $credentials  = $argref->{'credentials'};
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    if (! (defined($credentials) && defined($slice_urn))) {
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	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
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    if (! GeniHRN::IsValid($slice_urn)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in URN");
    }
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    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

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    #
    # In this implementation, the user must provide a slice credential.
    #
    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (! (defined($slice) && defined($aggregate))) {
	return GeniResponse->Create(GENIRESPONSE_BADARGS, undef,
				    "No slice or aggregate here");
    }
    if ($slice_urn ne $slice->urn()) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
				    "Credential does not match the URN");
    }
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    return GeniCM::GetSliverAux($credential);
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}

#
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# Start a sliver (not sure what this means yet, so reboot for now).
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#
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sub StartSliver($)
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{
    my ($argref) = @_;
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    my $slice_urn    = $argref->{'slice_urn'};
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    my $sliver_urns  = $argref->{'component_urns'};
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    my $credentials  = $argref->{'credentials'};

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    if (! (defined($credentials) &&
	   (defined($slice_urn) || defined($sliver_urns)))) {
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	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

    $credential->HasPrivilege( "pi" ) or
	$credential->HasPrivilege( "info" ) or
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN, undef,
				    "Insufficient privilege");

    #
    # For now, only allow top level aggregate or the slice
    #
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    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (! (defined($slice) && defined($aggregate))) {
	return GeniResponse->Create(GENIRESPONSE_BADARGS, undef,
				    "No slice or aggregate here");
    }
    # Shutdown slices get nothing.
    if ($slice->shutdown()) {
	$slice->UnLock();
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN, undef,
				    "Slice has been shutdown");
    }
    
    if (defined($slice_urn)) {
	if (! GeniHRN::IsValid($slice_urn)) {
	    return GeniResponse->MalformedArgsResponse("Bad characters ".
						       "in URN");
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	}
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	if ($slice_urn ne $slice->urn()) {
	    return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
					"Credential does not match the URN");
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	}
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	if ($slice->Lock() != 0) {
	    return GeniResponse->BusyResponse();
	}
	if ($aggregate->Start() != 0) {
	    $slice->UnLock();
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	    return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
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					"Could not start sliver/aggregate");
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	}
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	$slice->UnLock();
	return GeniResponse->Create(GENIRESPONSE_SUCCESS);
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    }
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}

#
# Get sliver status
#
sub SliverStatus($)
{
    my ($argref) = @_;
    my $slice_urn    = $argref->{'slice_urn'};
    my $credentials  = $argref->{'credentials'};

    if (! (defined($credentials) && defined($slice_urn))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    if (! GeniHRN::IsValid($slice_urn)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in URN");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

    $credential->HasPrivilege( "pi" ) or
	$credential->HasPrivilege( "info" ) or
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN, undef,
				    "Insufficient privilege");

    #
    # For now, only allow top level aggregate or the slice
    #
    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (! (defined($slice) && defined($aggregate))) {
	return GeniResponse->Create(GENIRESPONSE_BADARGS, undef,
				    "No slice or aggregate here");
    }
    if ($slice_urn ne $slice->urn()) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
				    "Credential does not match the URN");
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    }
    if ($slice->Lock() != 0) {
	return GeniResponse->BusyResponse();
    }

    #
    # Grab all the slivers for this slice, and then
    # look for just the nodes.
    #
    my $blob = {
	"state"   => "started",
	"status"  => "ready",
	"details" => {},
    };
    my @slivers    = ();
    if ($aggregate->SliverList(\@slivers) != 0) {
	print STDERR "SliverStatus: Could not get slivers for $aggregate\n";
	$slice->UnLock();
	return GeniResponse->Create(GENIRESPONSE_ERROR);
    }
    foreach my $sliver (@slivers) {
	next
	    if ($sliver->isa("GeniAggregate"));
	next
	    if ($sliver->resource_type() ne "Node");
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	my $node_uuid = $sliver->uuid();
	my $node = GeniCM::LookupNode($node_uuid);
	if (!defined($node)) {
	    $slice->UnLock();
	    print STDERR "SliverStatus: Cannot find node by uuid $node_uuid\n";
	    return GeniResponse->Create(GENIRESPONSE_ERROR);
	}
	my $urn = GeniHRN::Generate($OURDOMAIN, "sliver", $node->node_id());
	my $state  = "started";
	my $status = "unknown";
	my $error  = "";
	
	if ($node->IsUp()) {
	    $status = "ready";
	}
	elsif ($node->eventstate() eq TBDB_NODESTATE_TBFAILED()) {
	    $status = "failed";
	    $blob->{'status'} = "failed";

	    my $bootlog;
	    my $nodeid = $node->node_id();
	    if ($node->GetBootLog(\$bootlog) == 0) {
		$error = $bootlog;
	    }
	}
	else {
	    $status = "notready";
	    # Set to notready unless something already failed. 
	    $blob->{'status'} = "notready"
		if ($blob->{'status'} ne "failed");
	}
	$blob->{'details'}->{$urn} = {
	    "state"  => $state,
	    "status" => $status,
	    "error"  => $error,
	};
    }
    $slice->UnLock();
    return GeniResponse->Create(GENIRESPONSE_SUCCESS, $blob);
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}

#
# Shutdown sliver
#
sub Shutdown($)
{
    my ($argref) = @_;
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    my $slice_urn    = $argref->{'slice_urn'};
    my $clear        = $argref->{'clear'} || 0;
    my $credentials  = $argref->{'credentials'};

    # For now, I am not worrying about the slice_urn argument.
    if (! (defined($credentials))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));
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    return GeniCM::ShutdownAux($credential, $clear);
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}

#
# Renew a sliver
#
sub RenewSliver($)
{
    my ($argref) = @_;
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    my $slice_urn    = $argref->{'slice_urn'};
    my $valid_until  = $argref->{'valid_until'};
    my $credentials  = $argref->{'credentials'};

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    if (! (defined($credentials) &&
	   defined($valid_until) && defined($slice_urn))) {
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	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
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    if (! GeniHRN::IsValid($slice_urn)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in URN");
    }
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    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

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    #
    # In this implementation, the user must provide a slice credential.
    #
    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (! (defined($slice) && defined($aggregate))) {
	return GeniResponse->Create(GENIRESPONSE_BADARGS, undef,
				    "No slice or aggregate here");
    }
    if ($slice_urn ne $slice->urn()) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
				    "Credential does not match the URN");
    }
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    return GeniCM::RenewSliverAux($credential, $valid_until);
}

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#
# Get a Ticket.
#
sub GetTicket($)
{
    my ($argref) = @_;
    my $slice_urn    = $argref->{'slice_urn'};
    my $rspecstr     = $argref->{'rspec'};
    my $credentials  = $argref->{'credentials'};
    my $impotent     = $argref->{'impotent'} || 0;

    if (! (defined($credentials) &&
	   defined($slice_urn) && defined($rspecstr))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    if (! ($rspecstr =~ /^[\040-\176\012\015\011]+$/)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in rspec");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

    #
    # This implementation requires a slice credential, and it must
    # match the slice_urn.
    #
    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (defined($slice)) {
	if ($slice_urn ne $slice->urn()) {
	    return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
					"Credential does not match the URN");
	}
	#
	# GetTicket applies only to slices that are not active. Must
	# use UpdateSliver() for an active sliver.
	#
	if (defined($aggregate)) {
	    return GeniResponse->Create(GENIRESPONSE_REFUSED(), undef,
				"Cannot get a ticket for active sliver");
	}
	#
	# It is an error if there is an outstanding ticket. That ticket
	# must be released first.
	#
	my $ticket = GeniTicket->SliceTicket($slice);
	if (defined($ticket)) {
	    return GeniResponse->Create(GENIRESPONSE_REFUSED, undef,
				    "Must release unredeemed ticket first");
	}
    }
    else {
	# Slice does not exist yet. 
    }
    return GeniCM::GetTicketAux($credential,
				$rspecstr, 0, $impotent, 1, 1, undef);
}    
	
#
# Update a ticket, returning a new ticket. 
#
sub UpdateTicket($)
{
    my ($argref) = @_;
    my $slice_urn    = $argref->{'slice_urn'};
    my $ticketstr    = $argref->{'ticket'};
    my $rspecstr     = $argref->{'rspec'};
    my $credentials  = $argref->{'credentials'};
    my $impotent     = $argref->{'impotent'} || 0;

    if (! (defined($credentials) && defined($ticketstr) &&
	   defined($slice_urn) && defined($rspecstr))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    if (! ($rspecstr =~ /^[\040-\176\012\015\011]+$/)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in rspec");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

    defined($credential) &&
	($credential->HasPrivilege( "pi" ) or
	 $credential->HasPrivilege( "instantiate" ) or
	 $credential->HasPrivilege( "bind" ) or
	 return GeniResponse->Create( GENIRESPONSE_FORBIDDEN, undef,
				      "Insufficient privilege" ));

    #
    # This implementation requires a slice credential, and it must
    # match the slice_urn.
    #
    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (defined($slice)) {
	if ($slice_urn ne $slice->urn()) {
	    return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
					"Credential does not match the URN");
	}
    }
    else {
	# Slice should exist at this point.
	return GeniResponse->Create(GENIRESPONSE_SEARCHFAILED(), undef,
				    "Slice does not exist here");
    }
    #
    # UpdateTicket applies only to slices that are not active. Must
    # use UpdateSliver() for an active sliver.
    #
    if (defined($aggregate)) {
	return GeniResponse->Create(GENIRESPONSE_REFUSED(), undef,
			    "Cannot update a ticket for active sliver");
    }

    my $ticket = GeniTicket->CreateFromSignedTicket($ticketstr);
    if (!defined($ticket)) {
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "Could not create GeniTicket object");
    }
    #
    # Make sure the ticket was issued to the caller.
    #
    if ($ticket->owner_uuid() ne $ENV{'GENIUUID'}) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN, undef,
				    "This is not your ticket");
    }
    if (!$ticket->stored()) {
	return GeniResponse->Create(GENIRESPONSE_REFUSED(), undef,
				    "Not an active ticket");
    }
    if ($ticket->slice_uuid() ne $slice->uuid()) {
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "This ticket is for another slice");
    }
    
    #
    # We need the user to sign the new ticket to. 
    #
    my $user = GeniUser->Lookup($credential->owner_uuid(), 1);
    if (!defined($user)) {
	$user = GeniCM::CreateUserFromCertificate($credential->owner_cert());
	if (!defined($user)) {
	    print STDERR "Could not create user from $credential\n";
	    return GeniResponse->Create(GENIRESPONSE_ERROR);
	}
    }
    return GeniCM::GetTicketAuxAux($slice, $user,
				   $rspecstr, 1, $impotent, 1, 1, $ticket);
}

#
# Update a sliver, returning a new ticket. 
#
sub UpdateSliver($)
{
    my ($argref) = @_;
    my $sliver_urn   = $argref->{'sliver_urn'};
    my $rspecstr     = $argref->{'rspec'};
    my $credentials  = $argref->{'credentials'};
    my $impotent     = $argref->{'impotent'} || 0;

    if (! (defined($credentials) &&
	   defined($sliver_urn) && defined($rspecstr))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    if (! ($rspecstr =~ /^[\040-\176\012\015\011]+$/)) {
	return GeniResponse->MalformedArgsResponse("Bad characters in rspec");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

    defined($credential) &&
	($credential->HasPrivilege( "pi" ) or
	 $credential->HasPrivilege( "instantiate" ) or
	 $credential->HasPrivilege( "bind" ) or
	 return GeniResponse->Create( GENIRESPONSE_FORBIDDEN, undef,
				      "Insufficient privilege" ));

    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (! (defined($slice) && defined($aggregate))) {
	return GeniResponse->Create(GENIRESPONSE_BADARGS, undef,
				    "No slice or aggregate here");
    }
    # Must be an aggregate (top level sliver).
    if (ref($aggregate) ne "GeniAggregate") {
	return GeniResponse->MalformedArgsResponse("Must supply aggregate");
    }
    if ($sliver_urn ne $aggregate->urn()) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
				    "Credential does not match the URN");
    }
    #
    # It is an error if there is an outstanding ticket. That ticket
    # must be released first.
    #
    my $ticket = GeniTicket->SliceTicket($slice);
    if (defined($ticket)) {
	return GeniResponse->Create(GENIRESPONSE_REFUSED, undef,
				    "Must release unredeemed ticket first");
    }

    #
    # Any user can update the sliver. The ticket is signed to that user.
    #
    my $user = GeniUser->Lookup($credential->owner_uuid(), 1);
    if (!defined($user)) {
	$user = GeniCM::CreateUserFromCertificate($credential->owner_cert());
	if (!defined($user)) {
	    print STDERR "Could not create user from $credential\n";
	    return GeniResponse->Create(GENIRESPONSE_ERROR);
	}
    }
    return GeniCM::GetTicketAuxAux($slice, $user,
				   $rspecstr, 1, $impotent, 1, 1, undef);
}

#
# Redeem a ticket
#
sub RedeemTicket($)
{
    my ($argref) = @_;
    my $slice_urn    = $argref->{'slice_urn'};
    my $ticketstr    = $argref->{'ticket'};
    my $credentials  = $argref->{'credentials'};
    my $keys         = $argref->{'keys'};
    my $impotent     = $argref->{'impotent'} || 0;
    
    if (! (defined($credentials) &&
	   defined($slice_urn) && defined($ticketstr))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    my $credential = CheckCredentials($credentials);
    return $credential
	if (GeniResponse::IsResponse($credential));

    my $ticket = GeniTicket->CreateFromSignedTicket($ticketstr);
    if (!defined($ticket)) {
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "Could not create GeniTicket object");
    }
    #
    # Make sure the ticket was issued to the caller.
    #
    if ($ticket->owner_uuid() ne $ENV{'GENIUUID'}) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN, undef,
				    "This is not your ticket");
    }
    my ($slice, $aggregate) = Credential2SliceAggregate($credential);
    if (! (defined($slice))) {
	return GeniResponse->Create(GENIRESPONSE_BADARGS, undef,
				    "No slice here");
    }
    if ($slice_urn ne $slice->urn()) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN(), undef,
				    "Credential does not match the URN");
    }
    my $isupdate = defined($aggregate);

    return GeniCM::SliverWorkAux($credential,
				 $ticket, $keys, $isupdate, $impotent, 1, 1);
}

#
# Release a ticket.
#
sub ReleaseTicket($)
{
    my ($argref) = @_;
    my $ticketstr    = $argref->{'ticket'};

    if (! (defined($ticketstr))) {
	return GeniResponse->MalformedArgsResponse("Missing arguments");
    }
    my $ticket = GeniTicket->CreateFromSignedTicket($ticketstr);
    if (!defined($ticket)) {
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "Could not create GeniTicket object");
    }
    #
    # Make sure the ticket was issued to the caller.
    #
    if ($ticket->owner_uuid() ne $ENV{'GENIUUID'}) {
	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN, undef,
				    "This is not your ticket");
    }
    #
    # If the ticket is not stored, it is not a ticket that needs
    # to be released. It is a copy or a reissue. Needs more thought.
    #
    if (! $ticket->stored()) {
	return GeniResponse->Create(GENIRESPONSE_SUCCESS);
    }
    if ($ticket->Lock() != 0) {
	return GeniResponse->BusyResponse("ticket");
    }
    if ($ticket->Release(TICKET_RELEASED) != 0) {
	print STDERR "ReleaseTicket: Error releasing $ticket\n";
	return GeniResponse->Create(GENIRESPONSE_ERROR);
    }
    return GeniResponse->Create(GENIRESPONSE_SUCCESS);
}

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#
# Initial credential check.
#
sub CheckCredentials($)
{
    my @credentials = @{ $_[0] };
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    if (scalar(@credentials) != 1) {
	return
	    GeniResponse->MalformedArgsResponse("Wrong number of credentials");
    }
    my $credential = GeniCredential->CreateFromSigned($credentials[0]);
    if (!defined($credential)) {
	return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				    "Could not create credential object");
    }
    #
    # Make sure the credential was issued to the caller, but no special
    # permission required to resolve component resources.
    #
    if ($credential->owner_uuid() ne $ENV{'GENIUUID'}) {
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	return GeniResponse->Create(GENIRESPONSE_FORBIDDEN, undef,
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				    "This is not your credential");
    }
    return $credential;
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}

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#
# Convert a URN to the local object.
#
sub LookupURN($)
{
    my ($urn) = @_;
    my $object = undef;
    
    if (! GeniHRN::IsValid($urn)) {
	return GeniResponse->MalformedArgsResponse("Invalid URN");
    }
    # The URN encodes the type.
    my ($auth,$type,$id) = GeniHRN::Parse($urn);
    return GeniResponse->Create(GENIRESPONSE_ERROR, undef,
				"Authority mismatch")
	if ($auth ne $OURDOMAIN);
    $type = lc($type);

    if ($type eq "node") {
	$object = GeniCM::LookupNode($urn);
    }
    elsif ($type eq "slice") {
	$object = GeniSlice->Lookup($urn);
    }
    elsif ($type eq "ticket") {
	$object = GeniTicket->Lookup($urn);
    }
    elsif ($type eq "sliver") {
	$object = GeniAggregate->Lookup($urn) || GeniSliver->Lookup($urn);
    }
    if (!defined($object)) {
	return GeniResponse->Create(GENIRESPONSE_SEARCHFAILED,
				    undef, "Nothing here by that name");
    }
    return $object;
}

#
# Map a slice/sliver credential to slice/aggregate
#
sub Credential2SliceAggregate($)
{
    my ($credential) = @_;
    my $target_uuid  = $credential->target_uuid();
    my $aggregate;
    
    my $slice = GeniSlice->Lookup($target_uuid);
    if (defined($slice)) {
	$aggregate = GeniAggregate->SliceAggregate($slice);
    }
    else {
	$aggregate = GeniAggregate->Lookup($target_uuid);
	if (defined($aggregate)) {
	    if ($aggregate->type() ne "Aggregate") {
		$aggregate = undef;
	    }
	    else {
		$slice = GeniSlice->Lookup($aggregate->slice_uuid());
		if (!defined($slice)) {
		    $aggregate = undef;
		}
	    }
	}
    }
    return ($slice, $aggregate);
}

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# _Always_ make sure that this 1 is at the end of the file...
1;