/* This file is part of Metaproxy.
- Copyright (C) 2005-2010 Index Data
+ Copyright (C) Index Data
Metaproxy is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+/* filter_bounce
+A very simple filter that produces some response, in case no earlier
+filter has done so, a kind of last resort fallback. Also supports dumping
+the request in that response, for debugging and testing purposes
+*/
+
#include "filter_bounce.hpp"
-#include "package.hpp"
-#include "util.hpp"
+#include <metaproxy/package.hpp>
+#include <metaproxy/util.hpp>
#include "gduutil.hpp"
#include <yaz/zgdu.h>
#include <sstream>
-//#include "config.hpp"
-//#include "filter.hpp"
-
-//#include <boost/thread/mutex.hpp>
-
-
-
-
-
namespace mp = metaproxy_1;
namespace yf = mp::filter;
namespace filter {
class Bounce::Rep {
friend class Bounce;
- bool bounce;
+ bool echo; // indicates that we wish to echo the request in the
+ // HTTP response
};
}
}
yf::Bounce::Bounce() : m_p(new Rep)
{
- m_p->bounce = true;
+ m_p->echo = false;
}
yf::Bounce::~Bounce()
-{ // must have a destructor because of boost::scoped_ptr
+{ // must have a destructor because of boost::scoped_ptr to m_p
}
-void yf::Bounce::process(mp::Package &package) const
+
+// Dump the http request into the content of the http response
+static void http_echo(mp::odr &odr, Z_GDU *zgdu, Z_GDU *zgdu_res)
{
- if (! m_p->bounce )
+ int len;
+ ODR enc = odr_createmem(ODR_ENCODE);
+ //int r =
+ (void) z_GDU(enc, &zgdu, 0, 0);
+ char *buf = odr_getbuf(enc, &len, 0);
+ //h.db( "\n" + msg + "\n" + std::string(buf,len) );
+ Z_HTTP_Response *hres = zgdu_res->u.HTTP_Response;
+ if (hres)
{
- package.move();
- return;
+ z_HTTP_header_set(odr, &hres->headers,
+ "Content-Type", "text/plain");
+
+ hres->content_buf = (char*) odr_malloc(odr, len);
+ memcpy(hres->content_buf, buf, len);
+ hres->content_len = len;
}
+ odr_destroy(enc);
+
+}
+
+
+void yf::Bounce::process(mp::Package &package) const
+{
package.session().close();
Z_GDU *zgdu = package.request().get();
-
+
if (!zgdu)
return;
-
+
//std::string message("BOUNCE ");
- std::ostringstream message;
+ std::ostringstream message;
message << "BOUNCE " << *zgdu;
-
- metaproxy_1::odr odr;
-
+
+ metaproxy_1::odr odr;
+
if (zgdu->which == Z_GDU_Z3950)
{
Z_APDU *apdu_res = 0;
apdu_res = odr.create_close(zgdu->u.z3950,
Z_Close_systemProblem,
message.str().c_str());
+ // TODO - Some day we may want a dump of the request in some
+ // addinfo in the close response
package.response() = apdu_res;
}
else if (zgdu->which == Z_GDU_HTTP_Request)
{
Z_GDU *zgdu_res = 0;
- zgdu_res
- = odr.create_HTTP_Response(package.session(),
+ zgdu_res
+ = odr.create_HTTP_Response(package.session(),
zgdu->u.HTTP_Request, 400);
-
+ if (m_p->echo)
+ {
+ http_echo(odr, zgdu, zgdu_res);
+ }
package.response() = zgdu_res;
}
else if (zgdu->which == Z_GDU_HTTP_Response)
{
}
-
+
return;
}
+void mp::filter::Bounce::configure(const xmlNode * ptr, bool test_only,
+ const char *path)
+{
+ for (ptr = ptr->children; ptr; ptr = ptr->next)
+ {
+ if (ptr->type != XML_ELEMENT_NODE)
+ continue;
+ else if (!strcmp((const char *) ptr->name, "echo"))
+ {
+ m_p->echo = mp::xml::get_bool(ptr, 0);
+ }
+ else
+ {
+ throw mp::filter::FilterException
+ ("Bad element '"
+ + std::string((const char *) ptr->name)
+ + "' in bounce filter");
+ }
+ }
+
+}
+
static mp::filter::Base* filter_creator()
{
return new mp::filter::Bounce;