/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2012 The FreeBSD Foundation
 *
 * This software was developed by Edward Tomasz Napierala under sponsorship
 * from the FreeBSD Foundation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON 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 ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __ISCSI_HH__
#define __ISCSI_HH__

#define CONN_SESSION_TYPE_NONE          0
#define CONN_SESSION_TYPE_DISCOVERY     1
#define CONN_SESSION_TYPE_NORMAL        2

struct iscsi_connection {
        iscsi_connection(struct portal *portal, freebsd::fd_up fd,
            const char *host, const struct sockaddr *client_sa);
        ~iscsi_connection();

        void handle();
private:
        void login();
        void login_chap(struct auth_group *ag);
        void login_negotiate_key(struct pdu *request, const char *name,
            const char *value, bool skipped_security,
            struct keys *response_keys);
        bool login_portal_redirect(struct pdu *request);
        bool login_target_redirect(struct pdu *request);
        void login_negotiate(struct pdu *request);
        void login_wait_transition();

        void discovery();
        bool discovery_target_filtered_out(const struct port *port) const;

        void kernel_handoff();

        struct connection       conn;
        struct portal           *conn_portal = nullptr;
        const struct port       *conn_port = nullptr;
        struct target           *conn_target = nullptr;
        freebsd::fd_up          conn_fd;
        int                     conn_session_type = CONN_SESSION_TYPE_NONE;
        std::string             conn_initiator_name;
        std::string             conn_initiator_addr;
        std::string             conn_initiator_alias;
        uint8_t                 conn_initiator_isid[6] = {};
        const struct sockaddr   *conn_initiator_sa = nullptr;
        int                     conn_max_recv_data_segment_limit = 0;
        int                     conn_max_send_data_segment_limit = 0;
        int                     conn_max_burst_limit = 0;
        int                     conn_first_burst_limit = 0;
        std::string             conn_user;
        struct chap             *conn_chap = nullptr;
};

#endif /* !__ISCSI_HH__ */