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#!/usr/bin/perl
##!~_~perlpath~_~
#
# Interchange restarter
#
# $Id: restart.PL,v 2.3 2003-06-18 17:34:47 jon Exp $
#
# Copyright (C) 2002-2003 Interchange Development Group
# Copyright (C) 1996-2002 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public
# License along with this program; if not, write to the Free
# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA.

use strict;

BEGIN {
($Global::VendRoot = $ENV{MINIVEND_ROOT})
if defined $ENV{MINIVEND_ROOT};
$Global::VendRoot = $Global::VendRoot || '/usr/local/interchange';
# $Global::VendRoot = $Global::VendRoot || '~_~INSTALLARCHLIB~_~';
$Global::VendBin = $Global::VendBin || '/usr/local/interchange/bin';
# $Global::VendBin = $Global::VendBin || '~_~INSTALLBIN~_~';
}

### END CONFIGURATION VARIABLES

my $force;
if($ARGV[0] eq '-f') {
shift(@ARGV);
$force = ' -q ';
}

$ENV{PATH} = "/bin:/usr/bin";
$ENV{IFS} = " ";

# Untaint alphanuerics, periods, slashes, and minus signs
# for options
my $tmp;
for(@ARGV) {
m{([-./\w]+)};
$tmp = $1;
$_ = $tmp;
}

sub prompt {
    my($pr) = shift || '? ';
    my($def) = shift;
    my $ans = '';

return $def if $force;

    print $pr;
    print "[$def] " if $def;
chomp($ans = <STDIN>);
    $ans ? $ans : $def;
}

sub get_id {
my @files;
@files = ("$Global::VendRoot/.uid", "$Global::VendRoot/_uid");
my $uid;
for(@files) {
open(UID, "< $_") or next;
$uid = <UID>;
chomp($uid);
last;
}
return $uid;
}

my($name,$Trysu);
if ($< == 0) {
$name = get_id() || 'YOUR_INTERCHANGE_USER_NAME';
die "Interchange user ID not set in $Global::VendRoot/_uid.\n" if $name eq 'YOUR_INTERCHANGE_USER_NAME';
if(! $force and -t) {
print <<EOM;

The Interchange server should not be run as root. It should run
as a the user name you configured in when you set up the catalogs.

The name we think should run it is: $name

If you are starting the server from /etc/rc.local or another
startup file, you can use this:

su -f -c $Global::VendBin/restart $name

or if that fails:

su $name <<EOF
$Global::VendBin/restart
EOF

EOM
my $ask = prompt("Do you want me to start it as '$name' now? ", 'y');
exit 2 unless $ask =~ /^\s*y/i;
$Trysu = 1;
} else {
$Trysu = 1;
}

}

if(defined $Trysu) {
if($^O =~ /bsd|solaris|irix/i) {
exec <<EndOfExec or die "Couldn't exec: $!\n";
su $name <<EOF
$Global::VendBin/interchange $force -r
EOF
EndOfExec
} else {
exec qq{su -f -c "$Global::VendBin/interchange $force -r" $name};
}
} else {
exec qq{$Global::VendBin/interchange $force -r};
}

=head1 NAME

restart -- call bin/interchange C<->r with possible su

=head1 VERSION

1.0

=head1 SYNOPSIS

restart [-f]

=head1 DESCRIPTION

The C<restart> script just tries to execute C<interchange> C<-r> with the proper permissions. If
the user is "root", a prompt will be made to see if you want to start as the guessed
user ID. (This is the contents of the $Global::VendRoot/_uid file.)

=head1 OPTIONS

The C<-f> flag prevents the prompt for superuser and forces quiet mode; this is how you might call Interchange from
a system startup script.

=head1 SEE ALSO

interchange(1), http://www.icdevgroup.org/

=head1 AUTHOR

Mike Heins
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