c697aaa713
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@5224 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
144 lines
4.8 KiB
Perl
144 lines
4.8 KiB
Perl
# IBM(c) 2010 EPL license http://www.eclipse.org/legal/epl-v10.html
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#This module provides simplified methods for adding machine/user accounts to active directory,
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#as well as setting passwords for aforementioned accounts.
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#there exists direct perl ldap module, but too rare to bank on, going to use ldapmodify from
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#system calls
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use strict;
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use MIME::Base64;
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use Encode;
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use xCAT::Utils qw/genpassword/;
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use IPC::Open3;
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use IO::Select;
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my $machineldiftemplate = 'dn: CN=##UPCASENODENAME##,##OU##
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changetype: add
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objectClass: top
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objectClass: person
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objectClass: organizationalPerson
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objectClass: user
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objectClass: computer
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cn: ##UPCASENODENAME##
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distinguishedName: CN=##UPCASENODENAME##,##OU##
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objectCategory: CN=Computer,CN=Schema,CN=Configuration##REALMDCS##
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instanceType: 4
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displayName: ##UPCASENODENAME##$
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name: ##UPCASENODENAME##
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userAccountControl: 4096
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codePage: 0
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countryCode: 0
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accountExpires: 0
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sAMAccountName: ##UPCASENODENAME##$
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dNSHostName: ##UPCASENODENAME####DNSDOMAIN##
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servicePrincipalName: HOST/##UPCASENODENAME##
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servicePrincipalName: HOST/##UPCASENODENAME####DNSDOMAIN##
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dn: CN=##UPCASENODENAME##,##OU##
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changetype: modify
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replace: unicodePwd
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unicodePwd::##B64PASSWORD##';
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=cut
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add_machine_account
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Arguments are in a hash:
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node=>name of machine to add
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=cut
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sub add_machine_account {
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my %args = @_;
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my $nodename = $args{node};
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my $ou = $args{ou};
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my $dnsdomain = $args{dnsdomain};
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if (not $dnsdomain and $nodename =~ /\./) { #if no domain provided, guess from nodename
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$dnsdomain = $nodename;
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$dnsdomain =~ s/^[^\.]*//;
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}
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unless ($dnsdomain =~ /^\./) {
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$dnsdomain = '.'.$dnsdomain;
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}
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$nodename =~ s/\..*//; #strip dns domain if part of nodename
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my $upnodename = uc($nodename);
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my $domain_components = $dnsdomain;
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$domain_components =~ s/\./,dc=/g;
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unless ($domain_components =~ /^,dc=/) {
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$domain_components = ",dc=".$domain_components;
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}
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if ($ou) {
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unless ($ou =~ /$domain_components\z/) {
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$ou .= $domain_components;
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}
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} else {
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$ou = "CN=Computers".$domain_components;
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}
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my $directoryserver = $args{directoryserver};
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unless ($domain_components and $dnsdomain and $ou and $upnodename and $directoryserver) {
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return {error=>"Unable to determine all required parameters"};
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}
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my $newpassword = $args{password};
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unless ($newpassword) {
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$newpassword = '"'.genpassword(8).'"';
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}
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Encode::from_to($newpassword,"utf8","utf16le"); #ms uses utf16le, we use utf8
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my $b64password = encode_base64($newpassword);
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my $ldif = $machineldiftemplate;
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$ldif =~ s/##B64PASSWORD##/$b64password/g;
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$ldif =~ s/##OU##/$ou/g;
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$ldif =~ s/##REALMDCS##/$domain_components/g;
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$ldif =~ s/##DNSDOMAIN##/$dnsdomain/g;
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$ldif =~ s/##UPCASENODENAME##/$upnodename/g;
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my $dn = "CN=$upnodename,$ou";
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my $rc = system("ldapsearch -H ldaps://$directoryserver -b $dn");
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if ($rc == 0) {
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return {error=>"System already exists"};
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} elsif (not $rc==8192) {
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return {error=>"Unknown error $rc"};
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}
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$rc = system("echo '$ldif'|ldapmodify -H ldaps://$directoryserver");
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return {password=>$newpassword};
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}
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sub find_free_params { #search for things like next available uidNumber
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my %args = @_;
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my @needed_parms = split /,/,$args{needed_params};
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my $uidnumber = 10000; #common linux default is 500, some unix people would say 100, MS went with 10000. In this case, the highest number
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#seems the best choice since it won't confuse any software assuming too low a number is a 'system' account
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#also, a machine having local ids of 500-9999 won't as likely conflict with network accounts
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#modern systems should tolerate 4.2 billion ids, so potentially wasting 9,500 isn't that big of a deal
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#for now, just supporting uidNumber
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my $directoryserver = $args{directoryserver};
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my $dc = $args{ou};
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my $ldapout;
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my $ldapin;
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my $ldaperr;
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my $ldappid = open3($ldapin,$ldapout,$ldaperr,qw!ldapsearch -H !,"ldaps://$directoryserver","-b","$dc",qw!(uidNumber=*) uidNumber!);
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my $select = IO::Select->new($ldapout,$ldaperr);
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my @handles;
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my %useduids=();
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while (@handles = $select->can_read()) {
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foreach (@handles) {
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my $line = <$_>;
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if (not defined $line) {
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$select->remove($_);
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next;
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}
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if ($line =~ /^uidNumber: (\d+)$/) {
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$useduids{$1}=1;
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}
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}
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}
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while (1) { #loop through until 'return'
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unless ($useduids{$uidnumber}) {
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return {uidNumber=>$uidnumber};
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}
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$uidnumber +=1;
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}
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}
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use Data::Dumper;
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print Dumper(find_free_params(directoryserver=>"v4.xcat.e1350",ou=>"dc=xcat,dc=e1350"));
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