nb_net.c revision 87867
1169695Skan/* 2169695Skan * Copyright (c) 2000, Boris Popov 3169695Skan * All rights reserved. 4169695Skan * 5169695Skan * Redistribution and use in source and binary forms, with or without 6169695Skan * modification, are permitted provided that the following conditions 7169695Skan * are met: 8169695Skan * 1. Redistributions of source code must retain the above copyright 9169695Skan * notice, this list of conditions and the following disclaimer. 10169695Skan * 2. Redistributions in binary form must reproduce the above copyright 11169695Skan * notice, this list of conditions and the following disclaimer in the 12169695Skan * documentation and/or other materials provided with the distribution. 13169695Skan * 3. All advertising materials mentioning features or use of this software 14169695Skan * must display the following acknowledgement: 15169695Skan * This product includes software developed by Boris Popov. 16169695Skan * 4. Neither the name of the author nor the names of any co-contributors 17169695Skan * may be used to endorse or promote products derived from this software 18169695Skan * without specific prior written permission. 19169695Skan * 20169695Skan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21169695Skan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22169695Skan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23169695Skan * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24169695Skan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25169695Skan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26169695Skan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27169695Skan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28169695Skan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29169695Skan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30169695Skan * SUCH DAMAGE. 31169695Skan * 32169695Skan * $Id: nb_net.c,v 1.4 2001/02/16 02:46:12 bp Exp $ 33169695Skan */ 34169695Skan#include <sys/param.h> 35169695Skan#include <sys/socket.h> 36169695Skan#include <sys/ioctl.h> 37169695Skan 38169695Skan#include <net/if.h> 39169695Skan 40169695Skan#include <ctype.h> 41169695Skan#include <netdb.h> 42169695Skan#include <err.h> 43169695Skan#include <errno.h> 44169695Skan#include <stdlib.h> 45169695Skan#include <string.h> 46169695Skan#include <stdio.h> 47169695Skan#include <unistd.h> 48169695Skan 49169695Skan#include <netsmb/netbios.h> 50169695Skan#include <netsmb/smb_lib.h> 51169695Skan#include <netsmb/nb_lib.h> 52169695Skan 53169695Skanint 54169695Skannb_getlocalname(char *name) 55169695Skan{ 56169695Skan char buf[1024], *cp; 57169695Skan 58169695Skan if (gethostname(buf, sizeof(buf)) != 0) 59169695Skan return errno; 60169695Skan cp = strchr(buf, '.'); 61169695Skan if (cp) 62169695Skan *cp = 0; 63169695Skan strcpy(name, buf); 64169695Skan return 0; 65169695Skan} 66169695Skan 67169695Skanint 68169695Skannb_resolvehost_in(const char *name, struct sockaddr **dest) 69169695Skan{ 70169695Skan struct hostent* h; 71169695Skan struct sockaddr_in *sinp; 72169695Skan int len; 73169695Skan 74169695Skan h = gethostbyname(name); 75169695Skan if (!h) { 76169695Skan warnx("can't get server address `%s': ", name); 77169695Skan herror(NULL); 78169695Skan return ENETDOWN; 79169695Skan } 80169695Skan if (h->h_addrtype != AF_INET) { 81169695Skan warnx("address for `%s' is not in the AF_INET family", name); 82169695Skan return EAFNOSUPPORT; 83169695Skan } 84169695Skan if (h->h_length != 4) { 85169695Skan warnx("address for `%s' has invalid length", name); 86169695Skan return EAFNOSUPPORT; 87169695Skan } 88169695Skan len = sizeof(struct sockaddr_in); 89169695Skan sinp = malloc(len); 90169695Skan if (sinp == NULL) 91169695Skan return ENOMEM; 92169695Skan bzero(sinp, len); 93169695Skan sinp->sin_len = len; 94169695Skan sinp->sin_family = h->h_addrtype; 95169695Skan memcpy(&sinp->sin_addr.s_addr, h->h_addr, 4); 96169695Skan sinp->sin_port = htons(SMB_TCP_PORT); 97169695Skan *dest = (struct sockaddr*)sinp; 98169695Skan return 0; 99169695Skan} 100169695Skan 101169695Skanint 102169695Skannb_enum_if(struct nb_ifdesc **iflist, int maxif) 103169695Skan{ 104169695Skan struct ifconf ifc; 105169695Skan struct ifreq *ifrqp; 106169695Skan struct nb_ifdesc *ifd; 107169695Skan struct in_addr iaddr, imask; 108169695Skan char *ifrdata, *iname; 109169695Skan int s, rdlen, ifcnt, error, iflags, i; 110169695Skan 111169695Skan *iflist = NULL; 112169695Skan s = socket(AF_INET, SOCK_DGRAM, 0); 113169695Skan if (s == -1) 114169695Skan return errno; 115169695Skan 116169695Skan rdlen = maxif * sizeof(struct ifreq); 117169695Skan ifrdata = malloc(rdlen); 118169695Skan if (ifrdata == NULL) { 119169695Skan error = ENOMEM; 120169695Skan goto bad; 121169695Skan } 122169695Skan ifc.ifc_len = rdlen; 123169695Skan ifc.ifc_buf = ifrdata; 124169695Skan if (ioctl(s, SIOCGIFCONF, &ifc) != 0) { 125169695Skan error = errno; 126169695Skan goto bad; 127169695Skan } 128169695Skan ifrqp = ifc.ifc_req; 129169695Skan ifcnt = ifc.ifc_len / sizeof(struct ifreq); 130169695Skan error = 0; 131169695Skan for (i = 0; i < ifcnt; i++, ifrqp++) { 132169695Skan if (ioctl(s, SIOCGIFFLAGS, ifrqp) != 0) 133169695Skan continue; 134169695Skan iflags = ifrqp->ifr_flags; 135169695Skan if ((iflags & IFF_UP) == 0 || (iflags & IFF_BROADCAST) == 0) 136169695Skan continue; 137169695Skan 138169695Skan if (ioctl(s, SIOCGIFADDR, ifrqp) != 0 || 139169695Skan ifrqp->ifr_addr.sa_family != AF_INET) 140169695Skan continue; 141169695Skan iname = ifrqp->ifr_name; 142169695Skan if (strlen(iname) >= sizeof(ifd->id_name)) 143169695Skan continue; 144169695Skan iaddr = (*(struct sockaddr_in *)&ifrqp->ifr_addr).sin_addr; 145169695Skan 146169695Skan if (ioctl(s, SIOCGIFNETMASK, ifrqp) != 0) 147169695Skan continue; 148169695Skan imask = ((struct sockaddr_in *)&ifrqp->ifr_addr)->sin_addr; 149169695Skan 150169695Skan ifd = malloc(sizeof(struct nb_ifdesc)); 151169695Skan if (ifd == NULL) 152169695Skan return ENOMEM; 153169695Skan bzero(ifd, sizeof(struct nb_ifdesc)); 154169695Skan strcpy(ifd->id_name, iname); 155169695Skan ifd->id_flags = iflags; 156169695Skan ifd->id_addr = iaddr; 157169695Skan ifd->id_mask = imask; 158169695Skan ifd->id_next = *iflist; 159169695Skan *iflist = ifd; 160169695Skan } 161169695Skanbad: 162169695Skan free(ifrdata); 163169695Skan close(s); 164169695Skan return error; 165169695Skan} 166169695Skan 167169695Skan/*ARGSUSED*/ 168169695Skan/*int 169169695Skannbns_resolvename(const char *name, struct sockaddr **dest) 170169695Skan{ 171169695Skan printf("NetBIOS name resolver is not included in this distribution.\n"); 172169695Skan printf("Please use '-I' option to specify an IP address of server.\n"); 173169695Skan return EHOSTUNREACH; 174169695Skan}*/ 175169695Skan/* 176169695Skanint 177169695Skannb_hostlookup(struct nb_name *np, const char *server, const char *hint, 178169695Skan struct sockaddr_nb **dst) 179169695Skan{ 180169695Skan struct sockaddr_nb *snb; 181169695Skan int error; 182169695Skan 183169695Skan error = nb_sockaddr(NULL, np, &snb); 184169695Skan if (error) 185169695Skan return error; 186169695Skan do { 187169695Skan if (hint) { 188169695Skan error = nb_resolvehost_in(host, snb); 189169695Skan if (error) 190169695Skan break; 191169695Skan } else { 192169695Skan error = nb_resolvename(server); 193169695Skan } 194169695Skan } while(0); 195169695Skan if (!error) { 196169695Skan *dst = snb; 197169695Skan } else 198169695Skan nb_snbfree(snb); 199169695Skan return error; 200169695Skan} 201169695Skan*/