1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * Copyright 2018 Nexenta Systems, Inc. All rights reserved. 27 */ 28 29 /* 30 * Find existing an VC given a list of addresses. 31 */ 32 33 #include <errno.h> 34 #include <stdio.h> 35 #include <string.h> 36 #include <strings.h> 37 #include <stdlib.h> 38 #include <unistd.h> 39 #include <netdb.h> 40 #include <libintl.h> 41 #include <xti.h> 42 #include <assert.h> 43 44 #include <sys/types.h> 45 #include <sys/time.h> 46 #include <sys/byteorder.h> 47 #include <sys/socket.h> 48 #include <sys/fcntl.h> 49 50 #include <netinet/in.h> 51 #include <netinet/tcp.h> 52 #include <arpa/inet.h> 53 54 #include <netsmb/smb.h> 55 #include <netsmb/smb_lib.h> 56 #include <netsmb/netbios.h> 57 #include <netsmb/nb_lib.h> 58 #include <netsmb/smb_dev.h> 59 60 #include "charsets.h" 61 #include "private.h" 62 63 /* 64 * Ask the driver if it has a VC with this IP address. 65 */ 66 static int 67 findvc(struct smb_ctx *ctx, struct addrinfo *ai) 68 { 69 smbioc_ossn_t *ssn = &ctx->ct_ssn; 70 71 /* 72 * Copy the passed address into ssn_srvaddr, 73 * but first sanity-check lengths. Also, 74 * zero it first to avoid trailing junk. 75 */ 76 if (ai->ai_addrlen > sizeof (ssn->ssn_srvaddr)) 77 return (EINVAL); 78 bzero(&ssn->ssn_srvaddr, sizeof (ssn->ssn_srvaddr)); 79 bcopy(ai->ai_addr, &ssn->ssn_srvaddr, ai->ai_addrlen); 80 81 if (nsmb_ioctl(ctx->ct_dev_fd, SMBIOC_SSN_FIND, ssn) == -1) 82 return (errno); 83 84 return (0); 85 } 86 87 /* 88 * Find (and reuse) an existing VC. 89 * See also: newvc.c 90 */ 91 int 92 smb_ctx_findvc(struct smb_ctx *ctx) 93 { 94 struct addrinfo *ai; 95 int err; 96 97 /* Should already have the address list. */ 98 if ((ctx->ct_flags & SMBCF_RESOLVED) == 0) 99 return (EINVAL); 100 101 if (ctx->ct_dev_fd < 0) { 102 if ((err = smb_ctx_gethandle(ctx))) 103 return (err); 104 } 105 106 for (ai = ctx->ct_addrinfo; ai; ai = ai->ai_next) { 107 108 switch (ai->ai_family) { 109 110 case AF_INET: 111 case AF_INET6: 112 case AF_NETBIOS: 113 err = findvc(ctx, ai); 114 break; 115 116 default: 117 DPRINT("skipped family %d", ai->ai_family); 118 err = EPROTONOSUPPORT; 119 break; 120 } 121 122 if (err == 0) { 123 /* re-use an existing VC */ 124 return (0); 125 } 126 } 127 128 return (ENOENT); 129 } 130 131 /* 132 * Forcibly disconnect the current session, even if 133 * there are others using it! This is used by the 134 * SMB server netlogon when it wants to setup a new 135 * logon session and does not want any re-use. 136 */ 137 int 138 smb_ctx_kill(struct smb_ctx *ctx) 139 { 140 141 if (nsmb_ioctl(ctx->ct_dev_fd, SMBIOC_SSN_KILL, NULL) == -1) 142 return (errno); 143 144 return (0); 145 } 146