+ } else {
+ warn "warning: don't know how to check phone numbers for country $country";
+ return $self->ut_textn($field);
+ }
+ '';
+}
+
+=item ut_ip COLUMN
+
+Check/untaint ip addresses. IPv4 only for now.
+
+=cut
+
+sub ut_ip {
+ my( $self, $field ) = @_;
+ $self->getfield($field) =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/
+ or return "Illegal (IP address) $field: ". $self->getfield($field);
+ for ( $1, $2, $3, $4 ) { return "Illegal (IP address) $field" if $_ > 255; }
+ $self->setfield($field, "$1.$2.$3.$4");
+ '';
+}
+
+=item ut_ipn COLUMN
+
+Check/untaint ip addresses. IPv4 only for now. May be null.
+
+=cut
+
+sub ut_ipn {
+ my( $self, $field ) = @_;
+ if ( $self->getfield($field) =~ /^()$/ ) {
+ $self->setfield($field,'');
+ '';
+ } else {
+ $self->ut_ip($field);
+ }
+}
+
+=item ut_domain COLUMN
+
+Check/untaint host and domain names.
+
+=cut
+
+sub ut_domain {
+ my( $self, $field ) = @_;
+ #$self->getfield($field) =~/^(\w+\.)*\w+$/
+ $self->getfield($field) =~/^(([\w\-]+\.)*\w+)$/
+ or return "Illegal (domain) $field: ". $self->getfield($field);
+ $self->setfield($field,$1);
+ '';
+}
+
+=item ut_name COLUMN
+
+Check/untaint proper names; allows alphanumerics, spaces and the following
+punctuation: , . - '
+
+May not be null.
+
+=cut
+
+sub ut_name {
+ my( $self, $field ) = @_;
+ $self->getfield($field) =~ /^([\w \,\.\-\']+)$/
+ or return gettext('illegal_name'). " $field: ". $self->getfield($field);
+ $self->setfield($field,$1);
+ '';
+}
+
+=item ut_zip COLUMN
+
+Check/untaint zip codes.
+
+=cut
+
+sub ut_zip {
+ my( $self, $field, $country ) = @_;
+ if ( $country eq 'US' ) {
+ $self->getfield($field) =~ /\s*(\d{5}(\-\d{4})?)\s*$/
+ or return gettext('illegal_zip'). " $field for country $country: ".
+ $self->getfield($field);
+ $self->setfield($field,$1);
+ } else {
+ $self->getfield($field) =~ /^\s*(\w[\w\-\s]{2,8}\w)\s*$/
+ or return gettext('illegal_zip'). " $field: ". $self->getfield($field);
+ $self->setfield($field,$1);
+ }
+ '';
+}
+
+=item ut_country COLUMN
+
+Check/untaint country codes. Country names are changed to codes, if possible -
+see L<Locale::Country>.
+
+=cut
+
+sub ut_country {
+ my( $self, $field ) = @_;
+ unless ( $self->getfield($field) =~ /^(\w\w)$/ ) {
+ if ( $self->getfield($field) =~ /^([\w \,\.\(\)\']+)$/
+ && country2code($1) ) {
+ $self->setfield($field,uc(country2code($1)));
+ }