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-Add function to extract lowest available user id number in preparation for addclusteruser (or whatever it should be named)

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git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@5224 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
This commit is contained in:
jbjohnso 2010-02-15 22:18:37 +00:00
parent ecfa05d977
commit c697aaa713
1 changed files with 43 additions and 1 deletions
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44
xCAT-server/lib/perl/xCAT/ADUtils.pm
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@ -10,6 +10,8 @@ use strict;
use MIME::Base64;
use Encode;
use xCAT::Utils qw/genpassword/;
use IPC::Open3;
use IO::Select;
my $machineldiftemplate = 'dn: CN=##UPCASENODENAME##,##OU##
@ -97,5 +99,45 @@ sub add_machine_account {
$rc = system("echo '$ldif'|ldapmodify -H ldaps://$directoryserver");
return {password=>$newpassword};
}
sub find_free_params { #search for things like next available uidNumber
my %args = @_;
my @needed_parms = split /,/,$args{needed_params};
my $uidnumber = 10000; #common linux default is 500, some unix people would say 100, MS went with 10000. In this case, the highest number
#seems the best choice since it won't confuse any software assuming too low a number is a 'system' account
#also, a machine having local ids of 500-9999 won't as likely conflict with network accounts
#modern systems should tolerate 4.2 billion ids, so potentially wasting 9,500 isn't that big of a deal
#for now, just supporting uidNumber
my $directoryserver = $args{directoryserver};
my $dc = $args{ou};
my $ldapout;
my $ldapin;
my $ldaperr;
my $ldappid = open3($ldapin,$ldapout,$ldaperr,qw!ldapsearch -H !,"ldaps://$directoryserver","-b","$dc",qw!(uidNumber=*) uidNumber!);
my $select = IO::Select->new($ldapout,$ldaperr);
my @handles;
my %useduids=();
while (@handles = $select->can_read()) {
foreach (@handles) {
my $line = <$_>;
if (not defined $line) {
$select->remove($_);
next;
}
if ($line =~ /^uidNumber: (\d+)$/) {
$useduids{$1}=1;
}
}
}
while (1) { #loop through until 'return'
unless ($useduids{$uidnumber}) {
return {uidNumber=>$uidnumber};
}
$uidnumber +=1;
}
}
use Data::Dumper;
print Dumper(add_machine_account(node=>'v6.xcat.e1350',directoryserver=>'v4.xcat.e1350',ou=>'ou=wharbl'));
print Dumper(find_free_params(directoryserver=>"v4.xcat.e1350",ou=>"dc=xcat,dc=e1350"));