297 lines
6.6 KiB
C
297 lines
6.6 KiB
C
/* $NetBSD: nis_pr.c,v 1.1.1.1 1999/11/20 18:54:10 veego Exp $ */
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/*
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* Copyright (c) 1996,1999 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static const char rcsid[] = "Id: nis_pr.c,v 1.13 1999/01/18 07:46:59 vixie Exp";
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#endif
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/* Imports */
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#include "port_before.h"
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#ifndef WANT_IRS_NIS
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static int __bind_irs_nis_unneeded;
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#else
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <arpa/nameser.h>
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#include <resolv.h>
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#include <rpc/rpc.h>
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#include <rpc/xdr.h>
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#include <stdio.h>
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#include <string.h>
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#include <netdb.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <isc/memcluster.h>
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#include <irs.h>
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#include "port_after.h"
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#include "irs_p.h"
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#include "nis_p.h"
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/* Definitions */
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struct pvt {
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int needrewind;
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char * nis_domain;
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char * curkey_data;
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int curkey_len;
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char * curval_data;
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int curval_len;
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struct protoent proto;
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char * prbuf;
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};
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enum do_what { do_none = 0x0, do_key = 0x1, do_val = 0x2, do_all = 0x3 };
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static /*const*/ char protocols_byname[] = "protocols.byname";
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static /*const*/ char protocols_bynumber[] = "protocols.bynumber";
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/* Forward */
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static void pr_close(struct irs_pr *);
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static struct protoent * pr_byname(struct irs_pr *, const char *);
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static struct protoent * pr_bynumber(struct irs_pr *, int);
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static struct protoent * pr_next(struct irs_pr *);
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static void pr_rewind(struct irs_pr *);
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static void pr_minimize(struct irs_pr *);
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static struct protoent * makeprotoent(struct irs_pr *this);
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static void nisfree(struct pvt *, enum do_what);
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/* Public */
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struct irs_pr *
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irs_nis_pr(struct irs_acc *this) {
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struct irs_pr *pr;
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struct pvt *pvt;
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if (!(pr = memget(sizeof *pr))) {
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errno = ENOMEM;
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return (NULL);
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}
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memset(pr, 0x5e, sizeof *pr);
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if (!(pvt = memget(sizeof *pvt))) {
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memput(pr, sizeof *pr);
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errno = ENOMEM;
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return (NULL);
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}
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memset(pvt, 0, sizeof *pvt);
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pvt->needrewind = 1;
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pvt->nis_domain = ((struct nis_p *)this->private)->domain;
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pr->private = pvt;
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pr->byname = pr_byname;
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pr->bynumber = pr_bynumber;
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pr->next = pr_next;
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pr->rewind = pr_rewind;
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pr->close = pr_close;
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pr->minimize = pr_minimize;
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pr->res_get = NULL;
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pr->res_set = NULL;
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return (pr);
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}
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/* Methods. */
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static void
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pr_close(struct irs_pr *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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nisfree(pvt, do_all);
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if (pvt->proto.p_aliases)
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free(pvt->proto.p_aliases);
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if (pvt->prbuf)
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free(pvt->prbuf);
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memput(pvt, sizeof *pvt);
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memput(this, sizeof *this);
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}
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static struct protoent *
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pr_byname(struct irs_pr *this, const char *name) {
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struct pvt *pvt = (struct pvt *)this->private;
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int r;
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nisfree(pvt, do_val);
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r = yp_match(pvt->nis_domain, protocols_byname, (char *)name,
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strlen(name), &pvt->curval_data, &pvt->curval_len);
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if (r != 0) {
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errno = ENOENT;
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return (NULL);
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}
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return (makeprotoent(this));
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}
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static struct protoent *
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pr_bynumber(struct irs_pr *this, int num) {
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struct pvt *pvt = (struct pvt *)this->private;
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char tmp[sizeof "-4294967295"];
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int r;
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nisfree(pvt, do_val);
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(void) sprintf(tmp, "%d", num);
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r = yp_match(pvt->nis_domain, protocols_bynumber, tmp, strlen(tmp),
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&pvt->curval_data, &pvt->curval_len);
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if (r != 0) {
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errno = ENOENT;
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return (NULL);
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}
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return (makeprotoent(this));
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}
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static struct protoent *
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pr_next(struct irs_pr *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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struct protoent *rval;
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int r;
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do {
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if (pvt->needrewind) {
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nisfree(pvt, do_all);
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r = yp_first(pvt->nis_domain, protocols_bynumber,
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&pvt->curkey_data, &pvt->curkey_len,
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&pvt->curval_data, &pvt->curval_len);
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pvt->needrewind = 0;
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} else {
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char *newkey_data;
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int newkey_len;
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nisfree(pvt, do_val);
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r = yp_next(pvt->nis_domain, protocols_bynumber,
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pvt->curkey_data, pvt->curkey_len,
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&newkey_data, &newkey_len,
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&pvt->curval_data, &pvt->curval_len);
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nisfree(pvt, do_key);
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pvt->curkey_data = newkey_data;
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pvt->curkey_len = newkey_len;
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}
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if (r != 0) {
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errno = ENOENT;
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return (NULL);
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}
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rval = makeprotoent(this);
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} while (rval == NULL);
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return (rval);
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}
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static void
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pr_rewind(struct irs_pr *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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pvt->needrewind = 1;
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}
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static void
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pr_minimize(struct irs_pr *this) {
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/* NOOP */
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}
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/* Private */
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static struct protoent *
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makeprotoent(struct irs_pr *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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char *p, **t;
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int n, m;
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if (pvt->prbuf)
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free(pvt->prbuf);
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pvt->prbuf = pvt->curval_data;
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pvt->curval_data = NULL;
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for (p = pvt->prbuf; *p && *p != '#'; p++)
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NULL;
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while (p > pvt->prbuf && isspace(p[-1]))
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p--;
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*p = '\0';
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p = pvt->prbuf;
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n = m = 0;
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pvt->proto.p_name = p;
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while (*p && !isspace(*p))
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p++;
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if (!*p)
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return (NULL);
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*p++ = '\0';
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while (*p && isspace(*p))
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p++;
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pvt->proto.p_proto = atoi(p);
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while (*p && !isspace(*p))
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p++;
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*p++ = '\0';
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while (*p) {
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if ((n + 1) >= m || !pvt->proto.p_aliases) {
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m += 10;
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t = realloc(pvt->proto.p_aliases,
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m * sizeof(char *));
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if (!t) {
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errno = ENOMEM;
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goto cleanup;
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}
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pvt->proto.p_aliases = t;
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}
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pvt->proto.p_aliases[n++] = p;
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while (*p && !isspace(*p))
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p++;
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if (*p)
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*p++ = '\0';
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}
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if (!pvt->proto.p_aliases)
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pvt->proto.p_aliases = malloc(sizeof(char *));
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if (!pvt->proto.p_aliases)
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goto cleanup;
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pvt->proto.p_aliases[n] = NULL;
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return (&pvt->proto);
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cleanup:
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if (pvt->proto.p_aliases) {
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free(pvt->proto.p_aliases);
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pvt->proto.p_aliases = NULL;
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}
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if (pvt->prbuf) {
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free(pvt->prbuf);
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pvt->prbuf = NULL;
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}
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return (NULL);
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}
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static void
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nisfree(struct pvt *pvt, enum do_what do_what) {
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if ((do_what & do_key) && pvt->curkey_data) {
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free(pvt->curkey_data);
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pvt->curkey_data = NULL;
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}
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if ((do_what & do_val) && pvt->curval_data) {
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free(pvt->curval_data);
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pvt->curval_data = NULL;
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}
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}
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#endif /*WANT_IRS_NIS*/
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