/* Unix SMB/Netbios implementation. Version 2.0 a WINS nsswitch module Copyright (C) Andrew Tridgell 1999 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define NO_SYSLOG #include "includes.h" #include extern int DEBUGLEVEL; #ifndef INADDRSZ #define INADDRSZ 4 #endif struct in_addr *lookup_backend(const char *name, int *count) { int fd; static int initialised; struct in_addr *ret; char *p; int j; if (!initialised) { initialised = 1; DEBUGLEVEL = 0; TimeInit(); setup_logging("nss_wins",True); charset_initialise(); lp_load(CONFIGFILE,True,False,False); load_interfaces(); } *count = 0; fd = open_socket_in(SOCK_DGRAM,0, 3, interpret_addr("0.0.0.0"), True); if (fd == -1) return NULL; set_socket_options(fd,"SO_BROADCAST"); p = lp_wins_server(); if (p && *p) { ret = name_query(fd,name,0x20,False,True, *interpret_addr2(p), count,NULL); goto out; } if (lp_wins_support()) { /* we are our own WINS server */ ret = name_query(fd,name,0x20,False,True, *interpret_addr2("127.0.0.1"), count,NULL); goto out; } /* uggh, we have to broadcast to each interface in turn */ for (j=iface_count() - 1; j >= 0; j--) { struct in_addr *bcast = iface_n_bcast(j); ret = name_query(fd,name,0x20,True,True,*bcast,count,NULL); if (ret) break; } out: close(fd); return ret; } /**************************************************************************** gethostbyname() - we ignore any domain portion of the name and only handle names that are at most 15 characters long **************************************************************************/ enum nss_status _nss_wins_gethostbyname_r(const char *name, struct hostent *he, char *buffer, size_t buflen, int *errnop, int *h_errnop) { char **host_addresses; struct in_addr *ip_list; int i, count; ip_list = lookup_backend(name, &count); if (!ip_list) { return NSS_STATUS_NOTFOUND; } if (buflen < (2*count+1)*INADDRSZ) { /* no ENOMEM error type?! */ return NSS_STATUS_NOTFOUND; } host_addresses = (char **)buffer; he->h_addr_list = host_addresses; host_addresses[count] = NULL; buffer += (count + 1) * INADDRSZ; buflen += (count + 1) * INADDRSZ; he->h_addrtype = AF_INET; he->h_length = INADDRSZ; for (i=0;i