Patch my Matt Simerson to get Mail::Ezmlm to return untainted data.

Patch against Mail::Ezmlm 0.04

--- Ezmlm.pm.orig	Sat Nov 13 13:38:59 2004
+++ Ezmlm.pm	Mon Nov 15 13:44:35 2004
@@ -236,6 +236,16 @@
    my($self, $part) = @_;
    my(@subscribers);
    ($self->_seterror(-1, 'must setlist() before returning subscribers()') && return undef) unless(defined($self->{'LIST_NAME'}));
+
+	# additions by matt simerson (matt@tnpi.net) to get past mod_perl security (taint) checks
+	$ENV{"PATH"} = "";
+	if ( $self->{'LIST_NAME'} =~ /([\w\-\/.]*)/ ) {
+		$self->{'LIST_NAME'} = $1;
+	} else {
+		warn "TAINTED DATA IN LIST_NAME: $self->{'LIST_NAME'}\n";
+	};
+	# end additions
+
    if(defined($part) && $part) {
       ($self->_seterror(-1, "$part part of $self->{'LIST_NAME'} does not appear to exist in subscribers()") && return undef) unless(-e "$self->{'LIST_NAME'}/$part");
       @subscribers = map { s/[\r\n]// && $_ } sort `$EZMLM_BASE/ezmlm-list $self->{'LIST_NAME'}/$part`;
@@ -270,6 +280,19 @@
    } else {
       foreach $address (@addresses) {
          next unless $self->_checkaddress($address);
+
+			# matt adds
+			$ENV{"PATH"} = "";   # taint checks
+
+			if ( $self->{'LIST_NAME'} =~ /([\w\-\/.]*)/ ) {
+				$self->{'LIST_NAME'} = $1;
+			} else {
+				warn "TAINTED DATA IN LIST_NAME: $self->{'LIST_NAME'}\n";
+			};
+
+			if ( $address =~ /(.*)/ ) { $address = $1 };
+			# end matt adds
+
          system("$EZMLM_BASE/ezmlm-sub", $self->{'LIST_NAME'}, $address) == 0 ||
             ($self->_seterror($?) && return undef);
       }
@@ -322,6 +345,16 @@
    } else {
       foreach $address (@addresses) {
 			$ENV{'SENDER'} = $address;
+
+			# matt adds
+			$ENV{"PATH"} = "";   # taint checks
+			if ( $self->{'LIST_NAME'} =~ /([\w\-\/.]*)/ ) {
+				$self->{'LIST_NAME'} = $1;
+			} else {
+				warn "TAINTED DATA IN LIST_NAME: $self->{'LIST_NAME'}\n";
+			};
+			# end matt adds
+
          undef($issub) if ((system("$EZMLM_BASE/ezmlm-issubn", $self->{'LIST_NAME'}) / 256) != 0)
       }   
    }