sfskey_update.proxy.in 3.54 KB
Newer Older
1 2 3
#!/usr/bin/perl -wT
#
# Copyright (c) 2000-2002 University of Utah and the Flux Group.
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
# 
# {{{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/>.
# 
# }}}
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154
#
use English;
use Getopt::Std;

#
# Manage the sfs_users files remotely from boss. The keys to change are
# passed in via stdin. Must use locking of course.
#
sub usage()
{
    print "Usage: sfskey_update.proxy\n";
    exit(-1);
}
my  $optlist = "";

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

#
# Locals
#
my $tmpkey  = "/var/tmp/sfs_users";
my $tmppub  = "/var/tmp/sfs_users.pub";
my $realkey = "/etc/sfs/sfs_users";
my $realpub = "/etc/sfs/sfs_users.pub";
my @newkeys = ();

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

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

#
# We don't want to run this script unless its the real version.
#
if ($UID != 0) {
    die("*** $0:\n".
	"    Must be root! Maybe the wrong version?\n");
}

#
# Parse command arguments. Once we return from getopts, all that should be
# left are the required arguments.
#
%options = ();
if (! getopts($optlist, \%options)) {
    usage();
}
if (@ARGV != 0) {
    usage();
}

#
# Take in our input and stash it. First field is the unique key.
#
while (<STDIN>) {
    chomp();
    push(@newkeys, $_);
}

if (! @newkeys) {
    print STDERR "No keys! Exiting ...\n";
    exit(0);
}

#
# Create two temp files, one for the key file and one for the pub file.
#
system("rm -f $tmpkey $tmppub") == 0
    or fatal("Could not remove old tmp files");
	     
my $oldmask = umask(0077);
open(OUTKEY, "> $tmpkey")
    or fatal("Could not open $tmpkey: $!");
umask(0022);
open(OUTPUB, "> $tmppub")
    or fatal("Could not open $tmppub: $!");
umask($oldmask);

print OUTKEY "#\n";
print OUTKEY "# This file is autogenerated from boss. DO NOT EDIT!\n";
print OUTKEY "#\n";
print OUTPUB "#\n";
print OUTPUB "# This file is autogenerated from boss. DO NOT EDIT!\n";
print OUTPUB "#\n";

#
# Parse each input line, separating the various sections (by colon).
#
foreach my $key ( @newkeys ) {
    if (! ($key =~ /^(.*):(.*):(.*):(.*):(.*)$/)) {
	print STDERR "Bad key line: $key\n";
	next;
    }

    print OUTKEY "$1:$2:$3:$4:$5\n";
    print OUTPUB "$1:$2:$3::\n";
}
close(OUTKEY)
    or fatal("Error closing $tmpkey: $!");
close(OUTPUB)
    or fatal("Error closing $tmppub: $!");

#
# Back up old ones and move new ones into place.
#
system("cp -pf $realkey ${realkey}.old") == 0
    or fatal("Could not backup $realkey");
system("cp -pf $realpub ${realpub}.old") == 0
    or fatal("Could not backup $realpub");
system("mv -f $tmpkey $realkey") == 0
    or fatal("Could not install $realkey");
system("mv -f $tmppub $realpub") == 0
    or fatal("Could not install $realpub");

exit(0);

#
# Caller will catch error and send email.
# 
sub fatal {
    local($msg) = $_[0];

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