124 lines
2.7 KiB
C
124 lines
2.7 KiB
C
/*
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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: (1) source distributions retain this entire copyright
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* notice and comment, and (2) distributions including binaries display
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* the following acknowledgement: ``This product includes software
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* developed by the University of California, Berkeley and its contributors''
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* in the documentation or other materials provided with the distribution
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* and in all advertising materials mentioning features or use of this
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* software. Neither the name of the University nor the names of its
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* contributors may 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 MERCHANTABILITY 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[] = "@(#)getprotoent.c 5.7 (Berkeley) 6/1/90";
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#endif /* LIBC_SCCS and not lint */
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef _MINIX
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#include <net/gen/netdb.h>
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static char *any _ARGS(( char *cp, char *match ));
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#endif
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#define MAXALIASES 35
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static FILE *protof = NULL;
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static char line[BUFSIZ+1];
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static struct protoent proto;
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static char *proto_aliases[MAXALIASES];
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int _proto_stayopen;
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void
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setprotoent(f)
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int f;
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{
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if (protof == NULL)
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protof = fopen(_PATH_PROTOCOLS, "r" );
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else
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rewind(protof);
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_proto_stayopen |= f;
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}
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void
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endprotoent()
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{
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if (protof) {
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fclose(protof);
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protof = NULL;
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}
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_proto_stayopen = 0;
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}
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struct protoent *
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getprotoent()
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{
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char *p;
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register char *cp, **q;
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if (protof == NULL && (protof = fopen(_PATH_PROTOCOLS, "r" )) == NULL)
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return (NULL);
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again:
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if ((p = fgets(line, BUFSIZ, protof)) == 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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proto.p_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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proto.p_proto = atoi(cp);
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q = proto.p_aliases = proto_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 < &proto_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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}
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*q = NULL;
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return (&proto);
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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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