[apple/libinfo.git] / rpc.subproj / getrpcent.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.1 (the "License").  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user or with the express written consent of
 * Sun Microsystems, Inc.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */

#if defined(LIBC_SCCS) && !defined(lint)
/*static char *sccsid = "from: @(#)getrpcent.c 1.14 91/03/11 Copyr 1984 Sun Micro";*/
static char *rcsid = "$Id: getrpcent.c,v 1.3 2002/02/19 20:36:23 epeyton Exp $";
#endif

/*
 * Copyright (c) 1984 by Sun Microsystems, Inc.
 */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <rpc/rpc.h>

/* forward */
void _old_setrpcent(int f);
struct rpcent *_old_getrpcent();
void _old_endrpcent();

/*
 * Internet version.
 */
struct rpcdata {
        FILE    *rpcf;
        int     stayopen;
#define MAXALIASES      35
        char    *rpc_aliases[MAXALIASES];
        struct  rpcent rpc;
        char    line[BUFSIZ+1];
} *rpcdata;

static  struct rpcent *interpret();
struct  hostent *gethostent();
char    *inet_ntoa();

static char RPCDB[] = "/etc/rpc";

static struct rpcdata *
_rpcdata()
{
        register struct rpcdata *d = rpcdata;

        if (d == 0) {
                d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata));
                rpcdata = d;
        }
        return (d);
}

struct rpcent *
_old_getrpcbynumber(number)
#ifdef __LP64__
        int32_t number;
#else
        register long number;
#endif
{
        register struct rpcdata *d = _rpcdata();
        register struct rpcent *p;
#ifdef __LP64__
        int x;
        
        x = number;
#endif

        if (d == 0)
                return (0);
        _old_setrpcent(0);
        while ((p = _old_getrpcent()))
        {
#ifdef __LP64__
                if (p->r_number == x) break;
#else
                if (p->r_number == number) break;
#endif
        }
        _old_endrpcent();
        return (p);
}

struct rpcent *
_old_getrpcbyname(name)
#if defined(__APPLE__)
        const char *name;
#else
        char *name;
#endif
{
        struct rpcent *rpc;
        char **rp;

        _old_setrpcent(0);
        while ((rpc = _old_getrpcent())) {
                if (strcmp(rpc->r_name, name) == 0)
                        return (rpc);
                for (rp = rpc->r_aliases; *rp != NULL; rp++) {
                        if (strcmp(*rp, name) == 0)
                                return (rpc);
                }
        }
        _old_endrpcent();
        return (NULL);
}

void
_old_setrpcent(f)
        int f;
{
        register struct rpcdata *d = _rpcdata();

        if (d == 0)
                return;
        if (d->rpcf == NULL)
                d->rpcf = fopen(RPCDB, "r");
        else
                rewind(d->rpcf);
        d->stayopen |= f;
}

void
_old_endrpcent()
{
        register struct rpcdata *d = _rpcdata();

        if (d == 0)
                return;
        if (d->rpcf && !d->stayopen) {
                fclose(d->rpcf);
                d->rpcf = NULL;
        }
}

struct rpcent *
_old_getrpcent()
{
        register struct rpcdata *d = _rpcdata();

        if (d == 0)
                return(NULL);
        if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL)
                return (NULL);
        if (fgets(d->line, BUFSIZ, d->rpcf) == NULL)
                return (NULL);
        return (interpret(d->line, strlen(d->line)));
}

static struct rpcent *
interpret(val, len)
        char *val;
        u_int len;
{
        register struct rpcdata *d = _rpcdata();
        char *p;
        register char *cp, **q;

        if (d == 0)
                return (0);
        (void) strncpy(d->line, val, len);
        p = d->line;
        d->line[len] = '\n';
        if (*p == '#')
                return (_old_getrpcent());
        cp = strpbrk(p, "#\n");
        if (cp == NULL)
                return (_old_getrpcent());
        *cp = '\0';
        cp = strpbrk(p, " \t");
        if (cp == NULL)
                return (_old_getrpcent());
        *cp++ = '\0';
        /* THIS STUFF IS INTERNET SPECIFIC */
        d->rpc.r_name = d->line;
        while (*cp == ' ' || *cp == '\t')
                cp++;
        d->rpc.r_number = atoi(cp);
        q = d->rpc.r_aliases = d->rpc_aliases;
        cp = strpbrk(cp, " \t");
        if (cp != NULL) 
                *cp++ = '\0';
        while (cp && *cp) {
                if (*cp == ' ' || *cp == '\t') {
                        cp++;
                        continue;
                }
                if (q < &(d->rpc_aliases[MAXALIASES - 1]))
                        *q++ = cp;
                cp = strpbrk(cp, " \t");
                if (cp != NULL)
                        *cp++ = '\0';
        }
        *q = NULL;
        return (&d->rpc);
}