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- /*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@(#)getnetent.c 5.5 (Berkeley) 6/27/88";
- #endif /* LIBC_SCCS and not lint */
-
- #include "inetprivate.h"
-
- #define MAXALIASES 35
-
- static char NETDB[] = _PATH_NETWORKS;
- static FILE *netf = NULL;
- static char line[BUFSIZ+1];
- static struct netent net;
- static char *net_aliases[MAXALIASES];
- static char *any(char *, char *);
-
- int _net_stayopen;
-
- void
- setnetent(f)
- int f;
- {
- if (netf == NULL)
- netf = fopen(NETDB, "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(NETDB, "r" )) == NULL)
- return (NULL);
- again:
- p = fgets(line, BUFSIZ, netf);
- if (p == NULL)
- return (NULL);
- if (*p == '#')
- goto again;
- cp = any(p, "#\n");
- if (cp == NULL)
- goto again;
- *cp = '\0';
- net.n_name = p;
- cp = any(p, " \t");
- if (cp == NULL)
- goto again;
- *cp++ = '\0';
- while (*cp == ' ' || *cp == '\t')
- cp++;
- p = any(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 = any(cp, " \t");
- if (cp != NULL)
- *cp++ = '\0';
- }
- *q = NULL;
- return (&net);
- }
-
- static char *
- any(cp, match)
- register char *cp;
- char *match;
- {
- register char *mp, c;
-
- while (c = *cp) {
- for (mp = match; *mp; mp++)
- if (*mp == c)
- return (cp);
- cp++;
- }
- return ((char *)0);
- }
-