wikixlogin.in 2.93 KB
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#!/usr/bin/perl -wT
#
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# Copyright (c) 2005-2014 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 English;
use Getopt::Std;
use Fcntl ':flock';

#
# Add a user to the wiki on ops. Also allow update of password.
#
sub usage()
{
    print STDOUT "Usage: wikixlogin <uid> <key>\n";
    exit(-1);
}
my $optlist = "d";
my $debug   = 0;

#
# Configure variables
#
my $TB		= "@prefix@";
my $TBOPS       = "@TBOPSEMAIL@";
my $CONTROL     = "@USERNODE@";
my $BOSSNODE	= "@BOSSNODE@";
my $WIKISUPPORT = @WIKISUPPORT@;
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my $TBMAINSITE  = @TBMAINSITE@;
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my $SSH         = "$TB/bin/sshtb";
my $WIKIPROXY   = "$TB/sbin/wikiproxy";

#
# Untaint the path
# 
$ENV{'PATH'} = "/bin:/usr/bin";
delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};

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

#
# Load the Testbed support stuff. 
#
use lib "@prefix@/lib";
use libdb;
use libtestbed;

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# Protos
sub fatal($);

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#
# We do not want to run this script unless its the real version.
#
if ($EUID != 0) {
    die("*** $0:\n".
	"    Must be setuid! Maybe its a development version?\n");
}

#
# This script is setuid, so please do not run it as root. Hard to track
# what has happened.
# 
if ($UID == 0) {
    die("*** $0:\n".
	"    Please do not run this as root! Its already setuid!\n");
}

#
# If no wiki support, just exit. 
#
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# No more WIKISUPPORT, but allow Utah admins to access old pages.
if (! $TBMAINSITE) {
    if (! $WIKISUPPORT) {
	print "WIKI support is not enabled. Exit ...\n";
	exit(0);
    }
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}

#
# Parse command arguments. Once we return from getopts, all that should be
# left are the required arguments.
#
%options = ();
if (! getopts($optlist, \%options)) {
    usage();
}
if (defined($options{"d"})) {
    $debug = 1;
}
if (@ARGV != 2) {
    usage();
}
my $user = $ARGV[0];
my $key  = $ARGV[1];

#
# Untaint args.
#
if ($user =~ /^([-\w]+)$/) {
    $user = $1;
}
else {
    die("Bad data in user: $user.");
}
if ($key =~ /^([\w]+)$/) {
    $key = $1;
}
else {
    fatal("Bad data in secretkey!");
}

#
# For ssh.
#
$UID = $EUID;

if ($CONTROL ne $BOSSNODE) {
    if (system("$SSH -host $CONTROL $WIKIPROXY xlogin $user '$key'")) {
	fatal("$WIKIPROXY failed on $CONTROL!");
    }
}
exit(0);

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

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