ccb365dd3d
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@5369 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
417 lines
14 KiB
Perl
417 lines
14 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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package xCAT::ADUtils;
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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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use Symbol qw/gensym/;
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my $machineldiftemplate = 'dn: CN=##NODENAME##,##OU##
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changetype: add
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objectClass: top
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objectClass: person
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objectClass: organizationalPerson
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objectClass: user
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objectClass: computer
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cn: ##NODENAME##
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distinguishedName: CN=##NODENAME##,##OU##
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objectCategory: CN=Computer,CN=Schema,CN=Configuration##REALMDCS##
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instanceType: 4
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displayName: ##NODENAME##$
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name: ##NODENAME##
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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: ##NODENAME##$
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dNSHostName: ##NODENAME####DNSDOMAIN##
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servicePrincipalName: HOST/##NODENAME##
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servicePrincipalName: HOST/##NODENAME####DNSDOMAIN##
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dn: CN=##NODENAME##,##OU##
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changetype: modify
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replace: unicodePwd
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unicodePwd::##B64PASSWORD##';
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my $useraccounttemplate = 'dn: CN=##FULLNAME##,##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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objectCategory: CN=Person,CN=Schema,CN=Configuration##REALMDCS##
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codePage: 0
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countryCode: 0
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distinguishedName: CN=##FULLNAME##,##OU##
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cn: ##FULLNAME##
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sn: ##LASTNAME##
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givenName: ##FIRSTNAME##
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displayName: ##FULLNAME##
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name: ##FULLNAME##
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instanceType: 4
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userAccountControl: 514
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accountExpires: 0
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uidNumber: ##UID##
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gidNumber: ##GID##
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sAMAccountName: ##USERNAME##
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userPrincipalName: ##USERNAME##@##DNSDOMAIN##
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mail: ##USERNAME##@##DNSDOMAIN##
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homeDirectory: ##USERSMBHOME##
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homeDrive: ##USERSMBDRIVELETTER##
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unixHomeDirectory: ##USERHOME##
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loginShell: ##USERSHELL##
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dn: CN=##FULLNAME##,##OU##
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changetype: modify
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replace: unicodePwd
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unicodePwd::##B64PASSWORD##
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dn: CN=##FULLNAME##,##OU##
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changetype: modify
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replace: userAccountControl
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userAccountControl: 512';
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sub list_user_accounts { #provide enough data to construct an /etc/passwd looking output
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my %args = @_;
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my $directoryserver = $args{directoryserver};
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my $dnsdomain = $args{dnsdomain};
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unless ($dnsdomain and $directoryserver) {
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die "Invalid arguments";
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}
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my $domain_components = $dnsdomain;
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$domain_components =~ s/^\.//;
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$domain_components =~ s/\./,dc=/g;
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$domain_components =~ s/^/dc=/;
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my @searchcmd = qw/ldapsearch -H /;
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push @searchcmd,"ldaps://$directoryserver","-b",$domain_components;
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push @searchcmd,qw/(&(objectClass=user)(!(objectClass=computer))) sAMAccountName unixHomeDirectory uidNumber gidNumber cn loginShell/;
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my $searchout;
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my $searchin;
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my $searcherr = gensym;
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my $search = open3($searchin,$searchout,$searcherr,@searchcmd);
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my $searchselect = IO::Select->new($searchout,$searchin);
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my @handles;
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my $failure;
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my %currvalues =();
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my %userhash= ();
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while (@handles = $searchselect->can_read()) {
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foreach (@handles) {
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my $line = <$_>;
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if (not defined $line) {
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$searchselect->remove($_);
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next;
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}
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if ($_ == $searcherr) {
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if ($line =~ /error/i or $line =~ /problem/i) {
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print $line;
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$failure=1;
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}
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} elsif ($line =~ /^dn: (.*)$/) {
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foreach(keys %currvalues) {
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$userhash{$currvalues{accountname}}->{$_} = $currvalues{$_};
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}
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%currvalues=();
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} elsif ($line =~ /^cn: (.*)$/) {
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$currvalues{fullname} = $1;
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} elsif ($line =~ /^sAMAccountName: (.*)$/) {
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$currvalues{accountname} = $1;
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} elsif ($line =~ /^uidNumber: (.*)$/) {
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$currvalues{uid} = $1;
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} elsif ($line =~ /^gidNumber: (.*)$/) {
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$currvalues{gid} = $1;
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} elsif ($line =~ /^unixHomeDirectory: (.*)$/) {
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$currvalues{homedir} = $1;
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} elsif ($line =~ /^loginShell: (.*)$/) {
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$currvalues{shell} = $1;
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}
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}
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}
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if ($failure) { return undef; }
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foreach(keys %currvalues) {
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$userhash{$currvalues{accountname}}->{$_} = $currvalues{$_};
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}
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return \%userhash;
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}
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sub delete_user_account { #provide enough data to construct an /etc/passwd looking output
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my %args = @_;
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my $directoryserver = $args{directoryserver};
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my $dnsdomain = $args{dnsdomain};
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my $username = $args{username};
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unless ($dnsdomain and $directoryserver and $username) {
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die "Invalid arguments";
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}
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}
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=cut
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example: add_user_account(username=>'fred',fullname=>'fred the great');
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=cut
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sub add_user_account {
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my %args = @_;
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my $dnsdomain = $args{dnsdomain};
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unless ($dnsdomain =~ /^\./) {
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$dnsdomain = '.'.$dnsdomain;
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}
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my $directoryserver = $args{directoryserver};
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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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my $ou = $args{ou};
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if ($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=Users".$domain_components;
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}
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unless ($domain_components and $dnsdomain and $ou and $directoryserver) {
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return {error=>"Unable to determine all required parameters"};
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}
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my $newpassword = $args{password};
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if ($newpassword) {
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$newpassword = '"'.$newpassword.'"';
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} else {
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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 $username = $args{username};
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my $fullname;
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if ($args{fullname}) {
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$fullname = $args{fullname};
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} else {
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$fullname = $username;
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}
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my $firstname;
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if ($args{firstname}) {
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$firstname = $args{firstname};
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} else {
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$firstname = $fullname;
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$firstname =~ s/ .*//; #remove anything after any space
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}
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my $lastname;
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if ($args{lastname}) {
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$firstname = $args{lastname};
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} else {
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$lastname = $fullname;
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$lastname =~ s/.* //; #remove anything before any space
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}
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my $gid;
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my $uid;
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if ($args{gid}) {
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$gid = $args{gid};
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} else {
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$gid = 100; #TODO, something more generic?
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}
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if ($args{uid}) {
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$uid = $args{uid};
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} else {
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my $base = $domain_components;
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$base =~ s/^,//;
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my $parms = find_free_params(directoryserver=>$directoryserver,ou=>$base);
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unless ($parms) {
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return { error => "Unable to auto-detect a valid uid" };
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}
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$uid = $parms->{uidNumber};
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}
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my $shell = $args{shell};
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unless ($shell) { $shell = "/bin/bash"; }
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my $uhome = $args{homedir};
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unless ($uhome) { $uhome = "/home/".$username; }
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my $ldif = $useraccounttemplate;
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if ($args{smbhome} and $args{smbhomeletter}) {
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my $smbhome = $args{smbhome};
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my $smbhomeletter = $args{smbhomeletter};
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$ldif =~ s/##USERSMBHOME##/$smbhome/g;
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$ldif =~ s/##USERSMBDRIVELETTER##/$smbhome/g;
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} else {
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$ldif =~ s/homeDirectory: ##USERSMBHOME##
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//g;
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$ldif =~ s/homeDrive: ##USERSMBDRIVELETTER##
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//g;
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}
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$ldif =~ s/##FULLNAME##/$fullname/g;
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$ldif =~ s/##USERNAME##/$username/g;
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$ldif =~ s/##FIRSTNAME##/$firstname/g;
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$ldif =~ s/##LASTNAME##/$lastname/g;
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$ldif =~ s/##OU##/$ou/g;
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$ldif =~ s/##DNSDOMAIN##/$dnsdomain/g;
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$ldif =~ s/##REALMDCS##/$domain_components/g;
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$ldif =~ s/##UID##/$uid/g;
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$ldif =~ s/##GID##/$gid/g;
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$ldif =~ s/##USERHOME##/$uhome/g;
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$ldif =~ s/##USERSHELL##/$shell/g;
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$ldif =~ s/##B64PASSWORD##/$b64password/g;
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my $dn = "CN=$fullname,$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=>"User 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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=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 $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 $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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my $ou = $args{ou};
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if ($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 $nodename 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/##NODENAME##/$nodename/g;
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my $dn = "CN=$nodename,$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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open(HUH,">","/tmp/huhh");
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print HUH $ldif;
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$rc = system("echo '$ldif'|ldapmodify -H ldaps://$directoryserver");
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return {password=>$newpassword};
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}
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sub krb_login {
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#TODO: use distinct credential cache
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#TODO: klist -s to see if credentials are good
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my %args = @_;
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my $password = $args{password};
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my $username = $args{username};
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my $realm = $args{realm};
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my $krbin;
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my $krbout;
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my $krberr = gensym;
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my $kinit = "kinit";
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if (-x "/usr/kerberos/bin/kinit") {
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$kinit = "/usr/kerberos/bin/kinit";
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}
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$kinit = open3($krbin,$krbout,$krberr,$kinit,$username."@".$realm);
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my $ksel = IO::Select->new($krbout,$krberr);
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my @handles;
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while (@handles = $ksel->can_read()) {
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foreach (@handles) {
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my $line;
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my $done = sysread $_,$line,180;
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unless ($done) {
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$ksel->remove($_);
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}
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if ($line =~ /Password for /) {
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print $krbin $password."\n";
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}
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}
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}
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if (waitpid($kinit,0)) {
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return $?;
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} else {
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die "Bug, $kinit got reaped before we could get to it\n";
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}
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}
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sub find_free_params { #search for things like next available uidNumber
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my %args = @_;
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my @needed_parms = split /,/,$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=gensym;
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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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my $failure;
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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($_);
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next;
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}
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if ($_ == $ldaperr) {
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if ($line =~ /error/i or $line =~ /problem/i) {
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print $line;
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$failure=1;
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}
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} elsif ($line =~ /^uidNumber: (\d+)$/) {
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$useduids{$1}=1;
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}
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}
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}
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if ($failure) { return undef; }
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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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#krb_login(username=>"Administrator",password=>"cluster",realm=>"XCAT.E1350");
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#print Dumper(list_user_accounts(directoryserver=>"v4.xcat.e1350",dnsdomain=>'xcat.e1350'));
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#print Dumper(find_free_params(directoryserver=>"v4.xcat.e1350",ou=>"dc=xcat,dc=e1350"));
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#use Data::Dumper;
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#print Dumper(add_user_account(dnsdomain=>'xcat.e1350',username=>'ffuu',directoryserver=>'v4.xcat.e1350'));
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#print Dumper add_machine_account(node=>'ufred.xcat.e1350',directoryserver=>'v4.xcat.e1350');
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1;
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