+ $self->SUPER::check;
+}
+
+=item _check_system
+
+Internal function to check the username against the list of system usernames
+from the I<system_usernames> configuration value. Returns true if the username
+is listed on the system username list.
+
+=cut
+
+sub _check_system {
+ my $self = shift;
+ scalar( grep { $self->username eq $_ || $self->email eq $_ }
+ $conf->config('system_usernames')
+ );
+}
+
+=item _check_duplicate
+
+Internal function to check for duplicates usernames, username@domain pairs and
+uids.
+
+If the I<global_unique-username> configuration value is set to B<username> or
+B<username@domain>, enforces global username or username@domain uniqueness.
+
+In all cases, check for duplicate uids and usernames or username@domain pairs
+per export and with identical I<svcpart> values.
+
+=cut
+
+sub _check_duplicate {
+ my $self = shift;
+
+ my $global_unique = $conf->config('global_unique-username') || 'none';
+ return '' if $global_unique eq 'disabled';
+
+ #this is Pg-specific. what to do for mysql etc?
+ # ( mysql LOCK TABLES certainly isn't equivalent or useful here :/ )
+ warn "$me locking svc_acct table for duplicate search" if $DEBUG;
+ dbh->do("LOCK TABLE svc_acct IN SHARE ROW EXCLUSIVE MODE")
+ or die dbh->errstr;
+ warn "$me acquired svc_acct table lock for duplicate search" if $DEBUG;
+
+ my $part_svc = qsearchs('part_svc', { 'svcpart' => $self->svcpart } );
+ unless ( $part_svc ) {
+ return 'unknown svcpart '. $self->svcpart;
+ }
+
+ my @dup_user = grep { !$self->svcnum || $_->svcnum != $self->svcnum }
+ qsearch( 'svc_acct', { 'username' => $self->username } );
+ return gettext('username_in_use')
+ if $global_unique eq 'username' && @dup_user;
+
+ my @dup_userdomain = grep { !$self->svcnum || $_->svcnum != $self->svcnum }
+ qsearch( 'svc_acct', { 'username' => $self->username,
+ 'domsvc' => $self->domsvc } );
+ return gettext('username_in_use')
+ if $global_unique eq 'username@domain' && @dup_userdomain;
+
+ my @dup_uid;
+ if ( $part_svc->part_svc_column('uid')->columnflag ne 'F'
+ && $self->username !~ /^(toor|(hyla)?fax)$/ ) {
+ @dup_uid = grep { !$self->svcnum || $_->svcnum != $self->svcnum }
+ qsearch( 'svc_acct', { 'uid' => $self->uid } );
+ } else {
+ @dup_uid = ();
+ }
+
+ if ( @dup_user || @dup_userdomain || @dup_uid ) {
+ my $exports = FS::part_export::export_info('svc_acct');
+ my %conflict_user_svcpart;
+ my %conflict_userdomain_svcpart = ( $self->svcpart => 'SELF', );
+
+ foreach my $part_export ( $part_svc->part_export ) {
+
+ #this will catch to the same exact export
+ my @svcparts = map { $_->svcpart } $part_export->export_svc;
+
+ #this will catch to exports w/same exporthost+type ???
+ #my @other_part_export = qsearch('part_export', {
+ # 'machine' => $part_export->machine,
+ # 'exporttype' => $part_export->exporttype,
+ #} );
+ #foreach my $other_part_export ( @other_part_export ) {
+ # push @svcparts, map { $_->svcpart }
+ # qsearch('export_svc', { 'exportnum' => $part_export->exportnum });
+ #}
+
+ #my $nodomain = $exports->{$part_export->exporttype}{'nodomain'};
+ #silly kludge to avoid uninitialized value errors
+ my $nodomain = exists( $exports->{$part_export->exporttype}{'nodomain'} )
+ ? $exports->{$part_export->exporttype}{'nodomain'}
+ : '';
+ if ( $nodomain =~ /^Y/i ) {
+ $conflict_user_svcpart{$_} = $part_export->exportnum
+ foreach @svcparts;
+ } else {
+ $conflict_userdomain_svcpart{$_} = $part_export->exportnum
+ foreach @svcparts;
+ }
+ }
+
+ foreach my $dup_user ( @dup_user ) {
+ my $dup_svcpart = $dup_user->cust_svc->svcpart;
+ if ( exists($conflict_user_svcpart{$dup_svcpart}) ) {
+ return "duplicate username: conflicts with svcnum ". $dup_user->svcnum.
+ " via exportnum ". $conflict_user_svcpart{$dup_svcpart};
+ }
+ }
+
+ foreach my $dup_userdomain ( @dup_userdomain ) {
+ my $dup_svcpart = $dup_userdomain->cust_svc->svcpart;
+ if ( exists($conflict_userdomain_svcpart{$dup_svcpart}) ) {
+ return "duplicate username\@domain: conflicts with svcnum ".
+ $dup_userdomain->svcnum. " via exportnum ".
+ $conflict_userdomain_svcpart{$dup_svcpart};
+ }
+ }
+
+ foreach my $dup_uid ( @dup_uid ) {
+ my $dup_svcpart = $dup_uid->cust_svc->svcpart;
+ if ( exists($conflict_user_svcpart{$dup_svcpart})
+ || exists($conflict_userdomain_svcpart{$dup_svcpart}) ) {
+ return "duplicate uid: conflicts with svcnum ". $dup_uid->svcnum.
+ " via exportnum ". $conflict_user_svcpart{$dup_svcpart}
+ || $conflict_userdomain_svcpart{$dup_svcpart};
+ }
+ }
+
+ }
+
+ return '';
+