/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
 */

/*
 * Create a new VC given a list of addresses.
 */

#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#include <libintl.h>
#include <xti.h>
#include <assert.h>

#include <sys/types.h>
#include <sys/time.h>
#include <sys/byteorder.h>
#include <sys/socket.h>
#include <sys/fcntl.h>

#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>

#include <netsmb/smb.h>
#include <netsmb/smb_lib.h>
#include <netsmb/netbios.h>
#include <netsmb/nb_lib.h>
#include <netsmb/smb_dev.h>

#include "smb/charsets.h"
#include "smb/private.h"

/*
 * Ask the IOD to create a VC with this IP address.
 */
static int
fknewvc(struct smb_ctx *ctx, struct addrinfo *ai)
{
        char host[256];
        char svc[32];
        smbioc_ossn_t *ssn = &ctx->ct_ssn;
        int err;

        if (smb_debug) {
                err = getnameinfo(ai->ai_addr, ai->ai_addrlen,
                    host, sizeof (host), svc, sizeof (svc),
                    AI_NUMERICHOST);
                if (err != 0) {
                        strlcpy(host, "(?)", sizeof (host));
                        strlcpy(svc, "?", sizeof (host));
                }
                printf("fknewvc: Try AF=%d %s:%s\n",
                    ai->ai_family, host, svc);
        }

        /*
         * Copy the passed address into ssn_srvaddr,
         * but first sanity-check lengths.  Also,
         * zero it first to avoid trailing junk.
         */
        if (ai->ai_addrlen > sizeof (ssn->ssn_srvaddr))
                return (EINVAL);
        bzero(&ssn->ssn_srvaddr, sizeof (ssn->ssn_srvaddr));
        bcopy(ai->ai_addr, &ssn->ssn_srvaddr, ai->ai_addrlen);

        /* Ask the IOD to connect using the info in ctx. */
        err = smb_iod_cl_newvc(ctx);
        if (smb_debug) {
                printf("fknewvc: iod_cl_newvc err=%d\n", err);
        }

        return (err);
}

/*
 * Setup a new VC via the IOD.
 * Similar to findvc.c
 */
int
smb_ctx_newvc(struct smb_ctx *ctx)
{
        struct addrinfo *ai;
        int err;

        /* Should already have the address list. */
        if ((ctx->ct_flags & SMBCF_RESOLVED) == 0)
                return (EINVAL);

        err = EPROTONOSUPPORT;  /* in case no AF match */
        for (ai = ctx->ct_addrinfo; ai; ai = ai->ai_next) {

                switch (ai->ai_family) {

                case AF_INET:
                case AF_INET6:
                case AF_NETBIOS:
                        err = fknewvc(ctx, ai);
                        if (err == 0)
                                return (0);
                        break;

                default:
                        break;
                }
        }

        /*
         * In the error case, the caller may try again
         * with new auth. info, so keep the door open.
         * Error return will close in smb_ctx_done.
         */
        return (err);
}