
/*
 * Copyright (c) 2001-2002 Packet Design, LLC.
 * All rights reserved.
 * 
 * Subject to the following obligations and disclaimer of warranty,
 * use and redistribution of this software, in source or object code
 * forms, with or without modifications are expressly permitted by
 * Packet Design; provided, however, that:
 * 
 *    (i)  Any and all reproductions of the source or object code
 *         must include the copyright notice above and the following
 *         disclaimer of warranties; and
 *    (ii) No rights are granted, in any manner or form, to use
 *         Packet Design trademarks, including the mark "PACKET DESIGN"
 *         on advertising, endorsements, or otherwise except as such
 *         appears in the above copyright notice or in the software.
 * 
 * THIS SOFTWARE IS BEING PROVIDED BY PACKET DESIGN "AS IS", AND
 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, PACKET DESIGN MAKES NO
 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING
 * THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
 * OR NON-INFRINGEMENT.  PACKET DESIGN DOES NOT WARRANT, GUARANTEE,
 * OR MAKE ANY REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS
 * OF THE USE OF THIS SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY,
 * RELIABILITY OR OTHERWISE.  IN NO EVENT SHALL PACKET DESIGN BE
 * LIABLE FOR ANY DAMAGES RESULTING FROM OR ARISING OUT OF ANY USE
 * OF THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL
 * DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF
 * USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF PACKET DESIGN IS ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Author: Archie Cobbs <archie@packetdesign.com>
 */

#ifndef _PDEL_HTTP_HTTP_SERVLET_H_
#define _PDEL_HTTP_HTTP_SERVLET_H_

/*
 * HTTP servlets
 */

struct http_request;
struct http_response;
struct http_servlet;
struct http_servlet_hook;

/*
 * Run method
 *
 * Should return "1" if further servlets should be tried, else "0" to
 * stop and send the output to the peer.
 *
 * If the servlet requires single threading, it must handle that itself.
 */
typedef	int	http_servlet_run_t(struct http_servlet *servlet,
			struct http_request *req, struct http_response *resp);

/*
 * Destroy method
 *
 * Cleanup and free a servlet structure. It is guaranteed that no threads
 * will execute in this servlet's "run" method when this is called.
 */
typedef	void	http_servlet_destroy_t(struct http_servlet *servlet);

/*
 * Servlet structure
 */
struct http_servlet {
	void 				*arg;		/* servlet cookie */
	struct http_servlet_hook	*hook;		/* server info */
	http_servlet_run_t		*run;		/* execute method */
	http_servlet_destroy_t		*destroy;	/* destructor */
};

#endif	/* _PDEL_HTTP_HTTP_SERVLET_H_ */

