grantfeature.in 3.52 KB
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#!/usr/bin/perl -w
#
# Copyright (c) 2003-2010 University of Utah and the Flux Group.
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# 
# {{{EMULAB-LICENSE
# 
# This file is part of the Emulab network testbed software.
# 
# This file is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or (at
# your option) any later version.
# 
# This file is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public
# License for more details.
# 
# You should have received a copy of the GNU Affero General Public License
# along with this file.  If not, see <http://www.gnu.org/licenses/>.
# 
# }}}
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#
use strict;
use English;
use Getopt::Std;

#
# Grant and revoke permission to use specific emulab features.
#
sub usage()
{
    print STDERR "Usage: grantfeature [-r] ";
    print STDERR "[-p <pid> | -u <user> | -e <exp> ] <feature>\n";
    print STDERR "	-h   This message\n";
    print STDERR "	-r   Revoke access instead of grant\n";
    exit(-1);
}
my $optlist  = "hp:dnru:e:";
my $impotent = 0;
my $debug    = 0;
my $revoke   = 0;
my $pid;
my $uid;
my $eid;
my $target;

# Protos
sub fatal($);

#
# Please do not run as root. Hard to track what has happened.
#
if ($UID == 0) {
    die("*** $0:\n".
	"    Please do not run this as root!\n");
}

#
# Configure variables
#
my $TB		 = "@prefix@";

#
# Testbed Support libraries
#
use lib "@prefix@/lib";
use emdb;
use EmulabFeatures;
use libtestbed;
use Experiment;
use Project;
use Group;
use User;

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

#
# Untaint the path
# 
$ENV{'PATH'} = "/bin:/sbin:/usr/bin:";

#
# Parse command arguments. Once we return from getopts, all that should be
# left are the required arguments.
#
my %options = ();
if (! getopts($optlist, \%options)) {
    usage();
}
if (defined($options{h})) {
    usage();
}
if (defined($options{n})) {
    $impotent = 1;
}
if (defined($options{r})) {
    $revoke = 1;
}
if (defined($options{d})) {
    $debug = 1;
}
if (defined($options{p})) {
    $pid = $options{p};
}
if (defined($options{u})) {
    $uid = $options{u};
}
if (defined($options{e})) {
    $eid = $options{e};
}
usage()
    if (@ARGV != 1);
usage()
    if (! (defined($pid) || defined($uid) || defined($eid)));

my $featurename = $ARGV[0];

#
# Verify user, must be admin.
#
my $this_user = User->ThisUser();
if (! defined($this_user)) {
    fatal("You ($UID) do not exist!");
}
if (!$this_user->IsAdmin()) {
    fatal("You are not a testbed administrator!");
}

if (defined($eid)) {
    $target = Experiment->Lookup($eid);
    if (!defined($target)) {
	fatal("No such experiment $eid\n");
    }
}
elsif (defined($pid)) {
    $target = Project->Lookup($pid);
    if (!defined($target)) {
	$target = Group->Lookup($pid);
    }
    if (!defined($target)) {
	fatal("No such project or group $pid\n");
    }
}
elsif (defined($uid)) {
    $target = User->Lookup($uid);
    if (!defined($target)) {
	fatal("No such user $uid\n");
    }
}
my $feature = EmulabFeatures->Lookup($featurename);
if (!defined($feature)) {
    fatal("No such feature $featurename; please create it first");
}

if ($revoke) {
    $feature->Disable($target) == 0
	or fatal("Could not disable $featurename for $target");
}
else {
    $feature->Enable($target) == 0
	or fatal("Could not enable $featurename for $target");
}
exit(0);

sub fatal($)
{
    my ($mesg) = $_[0];

    die("*** $0:\n".
	"    $mesg\n");
}