sub validate_record {
# --------------------------------------------------------
# Verifies that the information passed through the form and stored
# in %in matches a valid record. It checks first to see that if
# we are adding, that a duplicate ID key does not exist. It then
# checks to see that fields specified as not null are indeed not null,
# finally it checks against the reg expression given in the database
# definition.
#
my ($col, @input_err, $errstr, $err, $line, @lines, @data);
my (%rec) = @_;
if ($rec{'add_record'}) { # don't need to worry about duplicate key if modifying
open (DB, "<$db_file_name") or &cgierr("error in validate_records. unable to open db file: $db_file_name.\nReason: $!");
if ($db_use_flock) { flock(DB, 1); }
LINE: while (<DB>) {
(/^#/) and next LINE;
(/^\s*$/) and next LINE;
chomp;
@data = &split_decode($_);
($data[$db_key_pos] eq $rec{$db_key}) and return "duplicate key error";
}
close DB;
}
foreach $col (@db_cols) {
if ($rec{$col} =~ /^\s*$/) { # entry is null or only whitespace
($db_not_null{$col}) and # entry is not allowed to be null.
push(@input_err, "$col (Can not be left blank)"); # so let's add it as an error
}
else { # else entry is not null.
($db_valid_types{$col} && !($rec{$col} =~ /$db_valid_types{$col}/)) and
push(@input_err, "$col (Invalid format)"); # but has failed validation.
(length($rec{$col}) > $db_lengths{$col}) and
push (@input_err, "$col (Too long. Max length: $db_lengths{$col})");
if ($db_sort{$col} eq "date") {
push (@input_err, "$col (Invalid date format)") unless &date_to_unix($rec{$col});
}
}
}
if ($#input_err+1 > 0) { # since there are errors, let's build
foreach $err (@input_err) { # a string listing the errors
$errstr .= "<li>$err"; # and return it.
}
return "<ul>$errstr</ul>";
}
else {
return "ok"; # no errors, return ok.
}
}