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- /*
- * 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 rcsid[] = "$Id: getnetent.c,v 1.2 1994/07/28 21:50:39 roland Exp $";
- #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)), _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);
- }
-