More mod_perl support for MKWS web-server into tools area

[mkws-moved-to-github.git] / tools / mod_perl / MyApache2 / CopyCookie.pm

diff --git a/tools/mod_perl/MyApache2/CopyCookie.pm b/tools/mod_perl/MyApache2/CopyCookie.pm
new file mode 100644 (file)
index 0000000..3e29647
--- /dev/null
+++ b/tools/mod_perl/MyApache2/CopyCookie.pm
@@ -0,0 +1,41 @@
+package MyApache2::CopyCookie;
+
+use Apache2::Filter ();
+use Apache2::RequestRec ();
+use APR::Table ();
+
+use Apache2::Const -compile => qw(OK);
+
+use constant BUFF_LEN => 1024;
+
+sub handler {
+    my $f = shift;
+
+    # If the server generated a new cookie, make it available in a
+    # header other than the magic "Cookie" that clients can't read.
+    my $ho = $f->r->headers_out;
+    my $cookie = $ho->get('Set-Cookie');
+    if (defined $cookie && $cookie ne "") {
+       $ho->set('X-Set-Cake', $cookie);
+    }
+
+    # If the client sent an existing cookie as X-Cake, but didn't
+    # set Cookie, copy the former to the latter.
+    my $hi = $f->r->headers_in;
+    $cookie = $hi->get('Cookie');
+    if (!defined $cookie || $cookie eq "") {
+       $cookie = $hi->get('X-Cake');
+       if (defined $cookie && $cookie ne "") {
+           warn "copying X-Cake '$cookie' to Cookie";
+           $hi->set('Cookie', $cookie);
+       }
+    }
+
+    while ($f->read(my $buffer, BUFF_LEN)) {
+       $f->print($buffer);
+    }
+
+    return Apache2::Const::OK;
+}
+
+1;