1 files changed, 100 insertions, 0 deletions
diff --git a/lib/HTTP/Headers/Auth.pm b/lib/HTTP/Headers/Auth.pm
new file mode 100644
index 0000000..9af4509
--- /dev/null
+++ b/lib/HTTP/Headers/Auth.pm
@@ -0,0 +1,100 @@
+package HTTP::Headers::Auth;
+
+use strict;
+use warnings;
+
+our $VERSION = "6.10";
+
+use HTTP::Headers;
+
+package
+    HTTP::Headers;
+
+BEGIN {
+    # we provide a new (and better) implementations below
+    undef(&www_authenticate);
+    undef(&proxy_authenticate);
+}
+
+require HTTP::Headers::Util;
+
+sub _parse_authenticate
+{
+    my @ret;
+    for (HTTP::Headers::Util::split_header_words(@_)) {
+	if (!defined($_->[1])) {
+	    # this is a new auth scheme
+	    push(@ret, shift(@$_) => {});
+	    shift @$_;
+	}
+	if (@ret) {
+	    # this a new parameter pair for the last auth scheme
+	    while (@$_) {
+		my $k = shift @$_;
+		my $v = shift @$_;
+	        $ret[-1]{$k} = $v;
+	    }
+	}
+	else {
+	    # something wrong, parameter pair without any scheme seen
+	    # IGNORE
+	}
+    }
+    @ret;
+}
+
+sub _authenticate
+{
+    my $self = shift;
+    my $header = shift;
+    my @old = $self->_header($header);
+    if (@_) {
+	$self->remove_header($header);
+	my @new = @_;
+	while (@new) {
+	    my $a_scheme = shift(@new);
+	    if ($a_scheme =~ /\s/) {
+		# assume complete valid value, pass it through
+		$self->push_header($header, $a_scheme);
+	    }
+	    else {
+		my @param;
+		if (@new) {
+		    my $p = $new[0];
+		    if (ref($p) eq "ARRAY") {
+			@param = @$p;
+			shift(@new);
+		    }
+		    elsif (ref($p) eq "HASH") {
+			@param = %$p;
+			shift(@new);
+		    }
+		}
+		my $val = ucfirst(lc($a_scheme));
+		if (@param) {
+		    my $sep = " ";
+		    while (@param) {
+			my $k = shift @param;
+			my $v = shift @param;
+			if ($v =~ /[^0-9a-zA-Z]/ || lc($k) eq "realm") {
+			    # must quote the value
+			    $v =~ s,([\\\"]),\\$1,g;
+			    $v = qq("$v");
+			}
+			$val .= "$sep$k=$v";
+			$sep = ", ";
+		    }
+		}
+		$self->push_header($header, $val);
+	    }
+	}
+    }
+    return unless defined wantarray;
+    wantarray ? _parse_authenticate(@old) : join(", ", @old);
+}
+
+
+sub www_authenticate    { shift->_authenticate("WWW-Authenticate", @_)   }
+sub proxy_authenticate  { shift->_authenticate("Proxy-Authenticate", @_) }
+
+1;