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# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# Contributor(s): Dan Mosedale <dmose@mozilla.org>
# Frédéric Buclin <LpSolit@gmail.com>
package Bugzilla::Field;
use strict;
use base qw(Exporter);
@Bugzilla::Field::EXPORT = qw(check_form_field check_form_field_defined);
use Bugzilla::Util;
use Bugzilla::Error;
sub check_form_field {
my ($cgi, $fieldname, $legalsRef) = @_;
my $dbh = Bugzilla->dbh;
if (!defined $cgi->param($fieldname)
|| trim($cgi->param($fieldname)) eq ""
|| (defined($legalsRef)
&& lsearch($legalsRef, $cgi->param($fieldname)) < 0))
{
trick_taint($fieldname);
my ($result) = $dbh->selectrow_array("SELECT description FROM fielddefs
WHERE name = ?", undef, $fieldname);
my $field = $result || $fieldname;
ThrowCodeError("illegal_field", { field => $field });
}
}
sub check_form_field_defined {
my ($cgi, $fieldname) = @_;
if (!defined $cgi->param($fieldname)) {
ThrowCodeError("undefined_field", { field => $fieldname });
}
}
=head1 NAME
Bugzilla::Field - Useful routines for fields manipulation
=head1 SYNOPSIS
use Bugzilla::Field;
# Validation Routines
check_form_field($cgi, $fieldname, \@legal_values);
check_form_field_defined($cgi, $fieldname);
=head1 DESCRIPTION
This package provides functions for dealing with CGI form fields.
=head1 FUNCTIONS
This package provides several types of routines:
=head2 Validation
=over
=item C<check_form_field($cgi, $fieldname, \@legal_values)>
Description: Makes sure the field $fieldname is defined and its value
is non empty. If @legal_values is defined, this routine
also checks whether its value is one of the legal values
associated with this field. If the test fails, an error
is thrown.
Params: $cgi - a CGI object
$fieldname - the field name to check
@legal_values - (optional) ref to a list of legal values
Returns: nothing
=item C<check_form_field_defined($cgi, $fieldname)>
Description: Makes sure the field $fieldname is defined and its value
is non empty. Else an error is thrown.
Params: $cgi - a CGI object
$fieldname - the field name to check
Returns: nothing
=back
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