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#!/usr/bin/perl -w
#
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# Copyright (c) 2008-2011 University of Utah and the Flux Group.
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# 
# {{{GENIPUBLIC-LICENSE
# 
# GENI Public License
# 
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and/or hardware specification (the "Work") to
# deal in the Work without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Work, and to permit persons to whom the Work
# is furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Work.
# 
# THE WORK IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE WORK OR THE USE OR OTHER DEALINGS
# IN THE WORK.
# 
# }}}
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#
use strict;
use English;
use Getopt::Std;

#
# Post the current CRL to Utah, for distribution everywhere. 
# 
sub usage()
{
    print "Usage: postcrl [-f]\n";
    exit(1);
}
my $optlist = "f";
my $force   = 0;

#
# Configure variables
#
my $TB		  = "@prefix@";
my $TBOPS         = "@TBOPSEMAIL@";
my $TBLOGS        = "@TBLOGSEMAIL@";
my $PGENIDOMAIN   = "@PROTOGENI_DOMAIN@";
my $PGENISUPPORT  = @PROTOGENI_SUPPORT@;
my $SACERT	  = "$TB/etc/genisa.pem";
my $CRL		  = "$TB/ssl/crl.pem";
my $GENCRL        = "$TB/sbin/protogeni/gencrl";

# un-taint path
$ENV{'PATH'} = '/bin:/usr/bin:/usr/local/bin:/usr/site/bin';
delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};

# Protos
sub fatal($);

#
# Turn off line buffering on output
#
$| = 1; 

# Now we can load the libraries after setting the proper DB.
use lib '@prefix@/lib';
use libaudit;
use GeniDB;
use GeniCertificate;
use GeniAuthority;
use GeniRegistry;
use Genixmlrpc;

if ($UID != 0) {
    fatal("Must be root to run this script\n");
}

#
# Check args.
#
my %options = ();
if (! getopts($optlist, \%options)) {
    usage();
}
if (defined($options{"f"})) {
    $force = 1;
}

# Record output in case of error.
LogStart(0);

#
# Generate the new crl.
#
system("$GENCRL" . ($force ? " -f" : "")) >= 0
    or fatal("Could not generate new CRL!");

if ($? >> 8 == 1 && !$force) {
    # No change in the CRL, so do not post it.
    print STDERR "No change in CRL. Not posting.\n";
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    AuditAbort();
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    # exit value important; tells caller nothing happened.
    exit(1);
}

#
# Load the SA cert to act as caller context.
#
my $certificate = GeniCertificate->LoadFromFile($SACERT);
if (!defined($certificate)) {
    fatal("Could not load certificate from $SACERT\n");
}
my $context = Genixmlrpc->Context($certificate);
if (!defined($context)) {
    fatal("Could not create context to talk to clearinghouse");
}
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Genixmlrpc->SetContext($context);

my $clearinghouse = GeniRegistry::ClearingHouse->Create();
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if (!defined($clearinghouse)) {
    fatal("Could not create a clearinghouse client");
}

my $certstring = `cat $CRL`;

if ($clearinghouse->PostCRL($certstring)) {
    fatal("Could not post CRL to the clearinghouse");
}
# No errors at this point, nothing to report.
AuditAbort();
exit(0);

sub fatal($)
{
    my ($msg) = @_;

    print STDERR "*** $0:\n".
	         "    $msg\n";
    # exit value important.
    exit(-1);
}