1/* 2 * Copyright (c) 2000, 2001 Boris Popov 3 * All rights reserved. 4 * 5 * Portions Copyright (C) 2001 - 2010 Apple Inc. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Boris Popov. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $Id: nb.c,v 1.2 2005/10/07 03:51:09 lindak Exp $ 35 */ 36 37#include <netsmb/netbios.h> 38#include <netsmb/smb_lib.h> 39#include <netsmb/nb_lib.h> 40 41 42#define NBNS_FMT_ERR 0x01 /* Request was invalidly formatted */ 43#define NBNS_SRV_ERR 0x02 /* Problem with NBNS, connot process name */ 44#define NBNS_NME_ERR 0x03 /* No such name */ 45#define NBNS_IMP_ERR 0x04 /* Unsupport request */ 46#define NBNS_RFS_ERR 0x05 /* For policy reasons server will not register this name fron this host */ 47#define NBNS_ACT_ERR 0x06 /* Name is owned by another host */ 48#define NBNS_CFT_ERR 0x07 /* Name conflict error */ 49 50static int nb_resolve_wins(CFArrayRef WINSAddresses, CFMutableArrayRef *addressArray) 51{ 52 CFIndex ii, count = CFArrayGetCount(WINSAddresses); 53 int error = ENOMEM; 54 55 for (ii = 0; ii < count; ii++) { 56 CFStringRef winsString = CFArrayGetValueAtIndex(WINSAddresses, ii); 57 char winsName[SMB_MAX_DNS_SRVNAMELEN+1]; 58 59 if (winsString == NULL) { 60 continue; 61 } 62 63 CFStringGetCString(winsString, winsName, sizeof(winsName), kCFStringEncodingUTF8); 64 error = resolvehost(winsName, addressArray, NULL, NBNS_UDP_PORT_137, TRUE, FALSE); 65 if (error == 0) { 66 break; 67 } 68 smb_log_info("can't resolve WINS[%d] %s, syserr = %s", ASL_LEVEL_DEBUG, 69 (int)ii, winsName, strerror(error)); 70 } 71 return error; 72} 73 74/* 75 * Used for resolving NetBIOS names 76 */ 77int nb_ctx_resolve(struct nb_ctx *ctx, CFArrayRef WINSAddresses) 78{ 79 int error = 0; 80 81 if (WINSAddresses == NULL) { 82 ctx->nb_ns.sin_addr.s_addr = htonl(INADDR_BROADCAST); 83 ctx->nb_ns.sin_port = htons(NBNS_UDP_PORT_137); 84 ctx->nb_ns.sin_family = AF_INET; 85 ctx->nb_ns.sin_len = sizeof(ctx->nb_ns); 86 } else { 87 CFMutableArrayRef addressArray = NULL; 88 CFMutableDataRef addressData = NULL; 89 struct connectAddress *conn = NULL; 90 91 error = nb_resolve_wins(WINSAddresses, &addressArray); 92 if (error) { 93 return error; 94 } 95 /* 96 * At this point we have at least one IPv4 sockaddr in outAddressArray 97 * that we can use. May want to change this in the future to try all 98 * address. 99 */ 100 addressData = (CFMutableDataRef)CFArrayGetValueAtIndex(addressArray, 0); 101 if (addressData) 102 conn = (struct connectAddress *)((void *)CFDataGetMutableBytePtr(addressData)); 103 104 if (conn) 105 memcpy(&ctx->nb_ns, &conn->addr, conn->addr.sa_len); 106 else 107 error = ENOMEM; 108 CFRelease(addressArray); 109 } 110 return error; 111} 112 113/* 114 * Convert NetBIOS name lookup errors to UNIX errors 115 */ 116int nb_error_to_errno(int error) 117{ 118 switch (error) { 119 case NBNS_FMT_ERR: 120 error = EINVAL; 121 break; 122 case NBNS_SRV_ERR: 123 error = EBUSY; 124 break; 125 case NBNS_NME_ERR: 126 error = ENOENT; 127 break; 128 case NBNS_IMP_ERR: 129 error = ENOTSUP; 130 break; 131 case NBNS_RFS_ERR: 132 error = EACCES; 133 break; 134 case NBNS_ACT_ERR: 135 error = EADDRINUSE; 136 break; 137 case NBNS_CFT_ERR: 138 error = EADDRINUSE; 139 break; 140 default: 141 error = ETIMEDOUT; 142 break; 143 }; 144 return error; 145} 146