/* * Copyright (c) 1983 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro * Dep. Matematica Universidade de Coimbra, Portugal, Europe * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * from getnetent.c 1.1 (Coimbra) 93/06/02 */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93"; static char rcsid[] = "$Id$"; #endif /* LIBC_SCCS and not lint */ #include <sys/param.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <arpa/nameser.h> #include <stdio.h> #include <resolv.h> #include <netdb.h> #include <string.h> #ifndef _PATH_NETWORKS #define _PATH_NETWORKS "/etc/networks" #endif #define MAXALIASES 35 static FILE *netf; static char line[BUFSIZ+1]; static struct netent net; static char *net_aliases[MAXALIASES]; int _net_stayopen; void _setnetent __P((int)); void _endnetent __P((void)); void setnetent(stayopen) int stayopen; { sethostent(stayopen); _setnetent(stayopen); } void endnetent() { endhostent(); _endnetent(); } void _setnetent(f) int f; { if (netf == NULL) netf = fopen(_PATH_NETWORKS, "r" ); else rewind(netf); _net_stayopen |= f; } void _endnetent() { if (netf) { fclose(netf); netf = NULL; } _net_stayopen = 0; } struct netent * getnetent() { char *p; register char *cp, **q; if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL) return (NULL); again: p = fgets(line, BUFSIZ, netf); if (p == NULL) return (NULL); if (*p == '#') goto again; cp = strpbrk(p, "#\n"); if (cp == NULL) goto again; *cp = '\0'; net.n_name = p; cp = strpbrk(p, " \t"); if (cp == NULL) goto again; *cp++ = '\0'; while (*cp == ' ' || *cp == '\t') cp++; p = strpbrk(cp, " \t"); if (p != NULL) *p++ = '\0'; net.n_net = inet_network(cp); net.n_addrtype = AF_INET; q = net.n_aliases = net_aliases; if (p != NULL) cp = p; while (cp && *cp) { if (*cp == ' ' || *cp == '\t') { cp++; continue; } if (q < &net_aliases[MAXALIASES - 1]) *q++ = cp; cp = strpbrk(cp, " \t"); if (cp != NULL) *cp++ = '\0'; } *q = NULL; return (&net); }