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321 lines
7.3 KiB
C
321 lines
7.3 KiB
C
/* $NetBSD: getrpcent.c,v 1.17 2000/01/22 22:19:17 mycroft Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user or with the express written consent of
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* Sun Microsystems, Inc.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char *sccsid = "@(#)getrpcent.c 1.14 91/03/11 Copyr 1984 Sun Micro";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Copyright (c) 1984 by Sun Microsystems, Inc.
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*/
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#include "namespace.h"
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <assert.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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#include <rpc/rpc.h>
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#ifdef YP
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#endif
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#include "un-namespace.h"
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/*
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* Internet version.
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*/
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static struct rpcdata {
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FILE *rpcf;
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int stayopen;
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#define MAXALIASES 35
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char *rpc_aliases[MAXALIASES];
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struct rpcent rpc;
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char line[BUFSIZ+1];
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#ifdef YP
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char *domain;
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char *current;
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int currentlen;
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#endif
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} *rpcdata;
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static struct rpcent *interpret(char *val, size_t len);
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#ifdef YP
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static int __yp_nomap = 0;
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extern int _yp_check(char **);
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#endif /* YP */
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#define RPCDB "/etc/rpc"
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static struct rpcdata *_rpcdata(void);
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static struct rpcdata *
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_rpcdata()
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{
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struct rpcdata *d = rpcdata;
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if (d == 0) {
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d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata));
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rpcdata = d;
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}
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return (d);
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}
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struct rpcent *
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getrpcbynumber(number)
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int number;
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{
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#ifdef YP
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int reason;
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char adrstr[16];
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#endif
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struct rpcent *p;
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struct rpcdata *d = _rpcdata();
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if (d == 0)
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return (0);
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#ifdef YP
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if (!__yp_nomap && _yp_check(&d->domain)) {
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sprintf(adrstr, "%d", number);
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reason = yp_match(d->domain, "rpc.bynumber", adrstr, strlen(adrstr),
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&d->current, &d->currentlen);
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switch(reason) {
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case 0:
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break;
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case YPERR_MAP:
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__yp_nomap = 1;
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goto no_yp;
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break;
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default:
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return(0);
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break;
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}
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d->current[d->currentlen] = '\0';
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p = interpret(d->current, d->currentlen);
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(void) free(d->current);
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return p;
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}
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no_yp:
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#endif /* YP */
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setrpcent(0);
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while ((p = getrpcent()) != NULL) {
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if (p->r_number == number)
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break;
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}
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endrpcent();
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return (p);
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}
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struct rpcent *
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getrpcbyname(name)
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char *name;
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{
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struct rpcent *rpc = NULL;
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char **rp;
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assert(name != NULL);
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setrpcent(0);
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while ((rpc = getrpcent()) != NULL) {
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if (strcmp(rpc->r_name, name) == 0)
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goto done;
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for (rp = rpc->r_aliases; *rp != NULL; rp++) {
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if (strcmp(*rp, name) == 0)
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goto done;
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}
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}
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done:
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endrpcent();
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return (rpc);
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}
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void
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setrpcent(f)
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int f;
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{
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struct rpcdata *d = _rpcdata();
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if (d == 0)
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return;
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#ifdef YP
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if (!__yp_nomap && _yp_check(NULL)) {
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if (d->current)
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free(d->current);
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d->current = NULL;
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d->currentlen = 0;
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return;
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}
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__yp_nomap = 0;
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#endif /* YP */
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if (d->rpcf == NULL)
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d->rpcf = fopen(RPCDB, "r");
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else
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rewind(d->rpcf);
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d->stayopen |= f;
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}
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void
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endrpcent()
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{
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struct rpcdata *d = _rpcdata();
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if (d == 0)
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return;
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#ifdef YP
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if (!__yp_nomap && _yp_check(NULL)) {
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if (d->current && !d->stayopen)
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free(d->current);
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d->current = NULL;
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d->currentlen = 0;
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return;
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}
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__yp_nomap = 0;
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#endif /* YP */
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if (d->rpcf && !d->stayopen) {
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fclose(d->rpcf);
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d->rpcf = NULL;
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}
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}
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struct rpcent *
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getrpcent()
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{
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struct rpcdata *d = _rpcdata();
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#ifdef YP
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struct rpcent *hp;
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int reason;
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char *val = NULL;
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int vallen;
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#endif
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if (d == 0)
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return(NULL);
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#ifdef YP
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if (!__yp_nomap && _yp_check(&d->domain)) {
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if (d->current == NULL && d->currentlen == 0) {
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reason = yp_first(d->domain, "rpc.bynumber",
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&d->current, &d->currentlen,
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&val, &vallen);
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} else {
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reason = yp_next(d->domain, "rpc.bynumber",
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d->current, d->currentlen,
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&d->current, &d->currentlen,
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&val, &vallen);
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}
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switch(reason) {
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case 0:
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break;
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case YPERR_MAP:
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__yp_nomap = 1;
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goto no_yp;
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break;
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default:
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return(0);
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break;
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}
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val[vallen] = '\0';
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hp = interpret(val, vallen);
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(void) free(val);
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return hp;
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}
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no_yp:
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#endif /* YP */
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if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL)
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return (NULL);
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/* -1 so there is room to append a \n below */
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if (fgets(d->line, BUFSIZ - 1, d->rpcf) == NULL)
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return (NULL);
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return (interpret(d->line, strlen(d->line)));
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}
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static struct rpcent *
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interpret(val, len)
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char *val;
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size_t len;
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{
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struct rpcdata *d = _rpcdata();
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char *p;
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char *cp, **q;
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assert(val != NULL);
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if (d == 0)
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return (0);
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(void) strncpy(d->line, val, BUFSIZ);
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d->line[BUFSIZ] = '\0';
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p = d->line;
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p[len] = '\n';
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if (*p == '#')
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return (getrpcent());
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cp = strpbrk(p, "#\n");
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if (cp == NULL)
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return (getrpcent());
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*cp = '\0';
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cp = strpbrk(p, " \t");
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if (cp == NULL)
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return (getrpcent());
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*cp++ = '\0';
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/* THIS STUFF IS INTERNET SPECIFIC */
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d->rpc.r_name = d->line;
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while (*cp == ' ' || *cp == '\t')
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cp++;
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d->rpc.r_number = atoi(cp);
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q = d->rpc.r_aliases = d->rpc_aliases;
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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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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 < &(d->rpc_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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*q = NULL;
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return (&d->rpc);
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}
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