libsmbfs/smb/findvc.c

613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * CDDL HEADER START
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * The contents of this file are subject to the terms of the
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Common Development and Distribution License (the "License").
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * You may not use this file except in compliance with the License.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * or http://www.opensolaris.org/os/licensing.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * See the License for the specific language governing permissions
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * and limitations under the License.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * When distributing Covered Code, include this CDDL HEADER in each
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * If applicable, add the following below this CDDL HEADER, with the
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * fields enclosed by brackets "[]" replaced with your own identifying
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * information: Portions Copyright [yyyy] [name of copyright owner]
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * CDDL HEADER END
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Use is subject to license terms.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Find existing an VC given a list of addresses.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <errno.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <stdio.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <string.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <strings.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <stdlib.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <unistd.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netdb.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <libintl.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <xti.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <assert.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/types.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/time.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/byteorder.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/socket.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/fcntl.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netinet/in.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netinet/tcp.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <arpa/inet.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/smb.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/smb_lib.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/netbios.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/nb_lib.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/smb_dev.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include "charsets.h"
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include "private.h"
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Ask the driver if it has a VC with this IP address.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Rossstatic int
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Rossfindvc(struct smb_ctx *ctx, struct addrinfo *ai)
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross{
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    smbioc_ossn_t *ssn = &ctx->ct_ssn;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    /*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     * Copy the passed address into ssn_srvaddr,
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     * but first sanity-check lengths.  Also,
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     * zero it first to avoid trailing junk.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    if (ai->ai_addrlen > sizeof (ssn->ssn_srvaddr))
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        return (EINVAL);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    bzero(&ssn->ssn_srvaddr, sizeof (ssn->ssn_srvaddr));
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    bcopy(ai->ai_addr, &ssn->ssn_srvaddr, ai->ai_addrlen);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    if (ioctl(ctx->ct_dev_fd, SMBIOC_SSN_FIND, ssn) == -1)
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        return (errno);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    return (0);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross}
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Find (and reuse) an existing VC.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * See also: newvc.c
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Rossint
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Rosssmb_ctx_findvc(struct smb_ctx *ctx)
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross{
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    struct addrinfo *ai;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    int err;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    /* Should already have the address list. */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    if ((ctx->ct_flags & SMBCF_RESOLVED) == 0)
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        return (EINVAL);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    for (ai = ctx->ct_addrinfo; ai; ai = ai->ai_next) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        switch (ai->ai_family) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        case AF_INET:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        case AF_INET6:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        case AF_NETBIOS:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            err = findvc(ctx, ai);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            break;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        default:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            DPRINT("skipped family %d", ai->ai_family);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            err = EPROTONOSUPPORT;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            break;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        if (err == 0) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            /* re-use an existing VC */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            ctx->ct_flags |= SMBCF_SSNACTIVE;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            return (0);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    return (ENOENT);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross}
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Forcibly disconnect the current session, even if
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * there are others using it!  This is used by the
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * SMB server netlogon when it wants to setup a new
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * logon session and does not want any re-use.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Rossint
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Rosssmb_ctx_kill(struct smb_ctx *ctx)
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross{
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    if (ioctl(ctx->ct_dev_fd, SMBIOC_SSN_KILL, NULL) == -1)
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        return (errno);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    return (0);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross}