libwww-perl-6.13HEADlibwww-perl-6.13master

1 files changed, 65 insertions, 0 deletions

diff --git a/lib/LWP/Authen/Basic.pm b/lib/LWP/Authen/Basic.pm
new file mode 100644
index 0000000..e7815bd
--- /dev/null
+++ b/lib/LWP/Authen/Basic.pm
@@ -0,0 +1,65 @@
+package LWP::Authen::Basic;
+use strict;
+
+require MIME::Base64;
+
+sub auth_header {
+    my($class, $user, $pass) = @_;
+    return "Basic " . MIME::Base64::encode("$user:$pass", "");
+}
+
+sub authenticate
+{
+    my($class, $ua, $proxy, $auth_param, $response,
+       $request, $arg, $size) = @_;
+
+    my $realm = $auth_param->{realm} || "";
+    my $url = $proxy ? $request->{proxy} : $request->uri_canonical;
+    return $response unless $url;
+    my $host_port = $url->host_port;
+    my $auth_header = $proxy ? "Proxy-Authorization" : "Authorization";
+
+    my @m = $proxy ? (m_proxy => $url) : (m_host_port => $host_port);
+    push(@m, realm => $realm);
+
+    my $h = $ua->get_my_handler("request_prepare", @m, sub {
+        $_[0]{callback} = sub {
+            my($req, $ua, $h) = @_;
+            my($user, $pass) = $ua->credentials($host_port, $h->{realm});
+	    if (defined $user) {
+		my $auth_value = $class->auth_header($user, $pass, $req, $ua, $h);
+		$req->header($auth_header => $auth_value);
+	    }
+        };
+    });
+    $h->{auth_param} = $auth_param;
+
+    if (!$proxy && !$request->header($auth_header) && $ua->credentials($host_port, $realm)) {
+	# we can make sure this handler applies and retry
+        add_path($h, $url->path);
+        return $ua->request($request->clone, $arg, $size, $response);
+    }
+
+    my($user, $pass) = $ua->get_basic_credentials($realm, $url, $proxy);
+    unless (defined $user and defined $pass) {
+	$ua->set_my_handler("request_prepare", undef, @m);  # delete handler
+	return $response;
+    }
+
+    # check that the password has changed
+    my ($olduser, $oldpass) = $ua->credentials($host_port, $realm);
+    return $response if (defined $olduser and defined $oldpass and
+                         $user eq $olduser and $pass eq $oldpass);
+
+    $ua->credentials($host_port, $realm, $user, $pass);
+    add_path($h, $url->path) unless $proxy;
+    return $ua->request($request->clone, $arg, $size, $response);
+}
+
+sub add_path {
+    my($h, $path) = @_;
+    $path =~ s,[^/]+\z,,;
+    push(@{$h->{m_path_prefix}}, $path);
+}
+
+1;