1 files changed, 54 insertions, 0 deletions
diff --git a/t/headers.t b/t/headers.t
new file mode 100644
index 0000000..a062f47
--- /dev/null
+++ b/t/headers.t
@@ -0,0 +1,54 @@
+
+# Test that header generation is spec compliant.
+# References:
+#   http://www.w3.org/Protocols/rfc2616/rfc2616.html
+#   http://www.w3.org/Protocols/rfc822/3_Lexical.html
+
+use strict;
+use warnings;
+
+use Test::More 'no_plan';
+
+use CGI;
+
+my $cgi = CGI->new;
+
+like $cgi->header( -type => "text/html" ),
+    qr#Type: text/html#, 'known header, basic case: type => "text/html"';
+
+eval { $cgi->header( -type => "text/html".$CGI::CRLF."evil: stuff" ) };
+like($@,qr/contains a newline/,'invalid header blows up');
+
+like $cgi->header( -type => "text/html".$CGI::CRLF." evil: stuff " ),
+    qr#Content-Type: text/html evil: stuff#, 'known header, with leading and trailing whitespace on the continuation line';
+
+eval { $cgi->header( -p3p => ["foo".$CGI::CRLF."bar"] ) };
+like($@,qr/contains a newline/,'P3P header with CRLF embedded blows up');
+
+eval { $cgi->header( -cookie => ["foo".$CGI::CRLF."bar"] ) };
+like($@,qr/contains a newline/,'Set-Cookie header with CRLF embedded blows up');
+
+eval { $cgi->header( -foobar => "text/html".$CGI::CRLF."evil: stuff" ) };
+like($@,qr/contains a newline/,'unknown header with CRLF embedded blows up');
+
+eval { $cgi->header( -foobar => $CGI::CRLF."Content-type: evil/header" ) };
+like($@,qr/contains a newline/, 'unknown header with leading newlines blows up');
+
+eval { $cgi->redirect( -type => "text/html".$CGI::CRLF."evil: stuff" ) };
+like($@,qr/contains a newline/,'redirect with known header with CRLF embedded blows up');
+
+eval { $cgi->redirect( -foobar => "text/html".$CGI::CRLF."evil: stuff" ) };
+like($@,qr/contains a newline/,'redirect with unknown header with CRLF embedded blows up');
+
+eval { $cgi->redirect( $CGI::CRLF.$CGI::CRLF."Content-Type: text/html") };
+like($@,qr/contains a newline/,'redirect with leading newlines blows up');
+
+{
+    my $cgi = CGI->new('t=bogus%0A%0A<html>');
+    my $out;
+	$CGI::LIST_CONTEXT_WARN = 0;
+    eval { $out = $cgi->redirect( $cgi->param('t') ) };
+    like($@,qr/contains a newline/, "redirect does not allow double-newline injection");
+}
+
+