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 27 /* 28 * Find existing an VC given a list of addresses. 29 */ 30 31 #include <errno.h> 32 #include <stdio.h> 33 #include <string.h> 34 #include <strings.h> 35 #include <stdlib.h> 36 #include <unistd.h> 37 #include <netdb.h> 38 #include <libintl.h> 39 #include <xti.h> 40 #include <assert.h> 41 42 #include <sys/types.h> 43 #include <sys/time.h> 44 #include <sys/byteorder.h> 45 #include <sys/socket.h> 46 #include <sys/fcntl.h> 47 48 #include <netinet/in.h> 49 #include <netinet/tcp.h> 50 #include <arpa/inet.h> 51 52 #include <netsmb/smb.h> 53 #include <netsmb/smb_lib.h> 54 #include <netsmb/netbios.h> 55 #include <netsmb/nb_lib.h> 56 #include <netsmb/smb_dev.h> 57 58 #include "charsets.h" 59 #include "private.h" 60 61 /* 62 * Ask the driver if it has a VC with this IP address. 63 */ 64 static int 65 findvc(struct smb_ctx *ctx, struct addrinfo *ai) 66 { 67 smbioc_ossn_t *ssn = &ctx->ct_ssn; 68 69 /* 70 * Copy the passed address into ssn_srvaddr, 71 * but first sanity-check lengths. Also, 72 * zero it first to avoid trailing junk. 73 */ 74 if (ai->ai_addrlen > sizeof (ssn->ssn_srvaddr)) 75 return (EINVAL); 76 bzero(&ssn->ssn_srvaddr, sizeof (ssn->ssn_srvaddr)); 77 bcopy(ai->ai_addr, &ssn->ssn_srvaddr, ai->ai_addrlen); 78 79 if (ioctl(ctx->ct_dev_fd, SMBIOC_SSN_FIND, ssn) == -1) 80 return (errno); 81 82 return (0); 83 } 84 85 /* 86 * Find (and reuse) an existing VC. 87 * See also: newvc.c 88 */ 89 int 90 smb_ctx_findvc(struct smb_ctx *ctx) 91 { 92 struct addrinfo *ai; 93 int err; 94 95 /* Should already have the address list. */ 96 if ((ctx->ct_flags & SMBCF_RESOLVED) == 0) 97 return (EINVAL); 98 99 if (ctx->ct_dev_fd < 0) { 100 if ((err = smb_ctx_gethandle(ctx))) 101 return (err); 102 } 103 104 for (ai = ctx->ct_addrinfo; ai; ai = ai->ai_next) { 105 106 switch (ai->ai_family) { 107 108 case AF_INET: 109 case AF_INET6: 110 case AF_NETBIOS: 111 err = findvc(ctx, ai); 112 break; 113 114 default: 115 DPRINT("skipped family %d", ai->ai_family); 116 err = EPROTONOSUPPORT; 117 break; 118 } 119 120 if (err == 0) { 121 /* re-use an existing VC */ 122 ctx->ct_flags |= SMBCF_SSNACTIVE; 123 return (0); 124 } 125 } 126 127 return (ENOENT); 128 } 129 130 /* 131 * Forcibly disconnect the current session, even if 132 * there are others using it! This is used by the 133 * SMB server netlogon when it wants to setup a new 134 * logon session and does not want any re-use. 135 */ 136 int 137 smb_ctx_kill(struct smb_ctx *ctx) 138 { 139 140 if (ioctl(ctx->ct_dev_fd, SMBIOC_SSN_KILL, NULL) == -1) 141 return (errno); 142 143 return (0); 144 } 145