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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/* Cherokee
*
* Authors:
* Alvaro Lopez Ortega <alvaro@alobbs.com>
*
* Copyright (C) 2001-2010 Alvaro Lopez Ortega
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/

#if !defined (CHEROKEE_INSIDE_CHEROKEE_H) && !defined (CHEROKEE_COMPILATION)
# error "Only <cherokee/cherokee.h> can be included directly, this file may disappear or change contents."
#endif

#ifndef CHEROKEE_FLCACHE_H
#define CHEROKEE_FLCACHE_H

#include <cherokee/common.h>
#include <cherokee/buffer.h>
#include <cherokee/avl_flcache.h>
#include <cherokee/connection.h>
#include <cherokee/config_node.h>

CHEROKEE_BEGIN_DECLS

/* Forward declaration */
typedef struct cherokee_flcache cherokee_flcache_t;
typedef struct cherokee_flcache_entry cherokee_flcache_entry_t;
typedef struct cherokee_flcache_conn cherokee_flcache_conn_t;

/* Classes
*/

typedef enum {
flcache_mode_undef,
flcache_mode_in,
flcache_mode_out,
flcache_mode_error
} cherokee_flcache_mode_t;

typedef enum {
flcache_policy_explicitly_allowed,
flcache_policy_all_but_forbidden
} cherokee_flcache_policy_t;


struct cherokee_flcache {
cherokee_avl_flcache_t request_map;
cherokee_buffer_t local_directory;
culong_t last_file_id;
};

struct cherokee_flcache_conn {
cherokee_flcache_mode_t mode;
int fd;

/* Outbound */
clong_t header_sent;
clong_t response_sent;
cherokee_avl_flcache_node_t *avl_node_ref;
cherokee_buffer_t header;
};


/* Front-line cache
*/
ret_t cherokee_flcache_new (cherokee_flcache_t **flcache);
ret_t cherokee_flcache_free (cherokee_flcache_t *flcache);
ret_t cherokee_flcache_configure (cherokee_flcache_t *flcache, cherokee_config_node_t *conf, void *vserver);

ret_t cherokee_flcache_cleanup (cherokee_flcache_t *flcache);
ret_t cherokee_flcache_req_get_cached (cherokee_flcache_t *flcache, cherokee_connection_t *conn);
ret_t cherokee_flcache_req_is_storable (cherokee_flcache_t *flcache, cherokee_connection_t *conn);
ret_t cherokee_flcache_req_set_store (cherokee_flcache_t *flcache, cherokee_connection_t *conn);
ret_t cherokee_flcache_del_entry (cherokee_flcache_t *flcache, cherokee_avl_flcache_node_t *entry);
ret_t cherokee_flcache_purge_path (cherokee_flcache_t *flcache, cherokee_buffer_t *path);

/* Front-line cache connection
*/
ret_t cherokee_flcache_conn_init (cherokee_flcache_conn_t *flcache_conn);
ret_t cherokee_flcache_conn_clean (cherokee_flcache_conn_t *flcache_conn);

ret_t cherokee_flcache_conn_write_header (cherokee_flcache_conn_t *flcache_conn, cherokee_connection_t *conn);
ret_t cherokee_flcache_conn_write_body (cherokee_flcache_conn_t *flcache_conn, cherokee_connection_t *conn);
ret_t cherokee_flcache_conn_commit_header (cherokee_flcache_conn_t *flcache_conn, cherokee_connection_t *conn);

ret_t cherokee_flcache_conn_send_header (cherokee_flcache_conn_t *flcache_conn, cherokee_connection_t *conn);
ret_t cherokee_flcache_conn_send_body (cherokee_flcache_conn_t *flcache_conn, cherokee_connection_t *conn);


CHEROKEE_END_DECLS

#endif /* CHEROKEE_FLCACHE_H */
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