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Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [libc/] [getprotoent.c] - Blame information for rev 173

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1 30 unneback
/*
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 * Copyright (c) 1983, 1993
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 *      The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *      This product includes software developed by the University of
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 *      California, Berkeley and its contributors.
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 * 4. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 *  $Id: getprotoent.c,v 1.2 2001-09-27 12:01:53 chris Exp $
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 */
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)getprotoent.c       8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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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 = strpbrk(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 = strpbrk(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 = strpbrk(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 = strpbrk(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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