120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
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/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)getnetent.c 5.5 (Berkeley) 6/27/88";
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#endif /* LIBC_SCCS and not lint */
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#include "inetprivate.h"
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#define MAXALIASES 35
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static char NETDB[] = _PATH_NETWORKS;
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static FILE *netf = NULL;
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static char line[BUFSIZ+1];
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static struct netent net;
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static char *net_aliases[MAXALIASES];
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static char *any(char *, char *);
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int _net_stayopen;
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extern u_int32_t inet_network(const char *cp);
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void
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setnetent(f)
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int f;
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{
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if (netf == NULL)
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netf = fopen(NETDB, "r" );
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else
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rewind(netf);
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_net_stayopen |= f;
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}
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void
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endnetent()
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{
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if (netf) {
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fclose(netf);
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netf = NULL;
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}
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_net_stayopen = 0;
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}
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struct netent *
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getnetent()
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{
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char *p;
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register char *cp, **q;
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if (netf == NULL && (netf = fopen(NETDB, "r" )) == NULL)
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return (NULL);
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again:
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p = fgets(line, BUFSIZ, netf);
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if (p == NULL)
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return (NULL);
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if (*p == '#')
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goto again;
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cp = any(p, "#\n");
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if (cp == NULL)
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goto again;
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*cp = '\0';
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net.n_name = p;
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cp = any(p, " \t");
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if (cp == NULL)
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goto again;
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*cp++ = '\0';
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while (*cp == ' ' || *cp == '\t')
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cp++;
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p = any(cp, " \t");
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if (p != NULL)
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*p++ = '\0';
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net.n_net = inet_network(cp);
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net.n_addrtype = AF_INET;
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q = net.n_aliases = net_aliases;
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if (p != NULL)
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cp = p;
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while (cp && *cp) {
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if (*cp == ' ' || *cp == '\t') {
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cp++;
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continue;
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}
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if (q < &net_aliases[MAXALIASES - 1])
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*q++ = cp;
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cp = any(cp, " \t");
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if (cp != NULL)
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*cp++ = '\0';
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}
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*q = NULL;
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return (&net);
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}
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static char *
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any(cp, match)
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register char *cp;
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char *match;
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{
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register char *mp, c;
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while (c = *cp) {
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for (mp = match; *mp; mp++)
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if (*mp == c)
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return (cp);
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cp++;
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}
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return ((char *)0);
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}
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