source: rtems-libbsd/freebsd/lib/libc/net/getnetbyht.c @ f41a394

55-freebsd-126-freebsd-12freebsd-9.3
Last change on this file since f41a394 was 3d1e767, checked in by Sebastian Huber <sebastian.huber@…>, on 04/27/16 at 08:25:22

Directly use <sys/types.h> provided by Newlib
  • Property mode set to 100644
File size: 7.2 KB
Line 
1#include <machine/rtems-bsd-user-space.h>
2
3/*
4 * Copyright (c) 1983, 1993
5 *      The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 4. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32/* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro
33 *      Dep. Matematica Universidade de Coimbra, Portugal, Europe
34 *
35 * Permission to use, copy, modify, and distribute this software for any
36 * purpose with or without fee is hereby granted, provided that the above
37 * copyright notice and this permission notice appear in all copies.
38 *
39 * from getnetent.c     1.1 (Coimbra) 93/06/02
40 */
41
42#if defined(LIBC_SCCS) && !defined(lint)
43static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93";
44static char orig_rcsid[] = "From: Id: getnetent.c,v 8.4 1997/06/01 20:34:37 vixie Exp";
45#endif /* LIBC_SCCS and not lint */
46#include <sys/cdefs.h>
47__FBSDID("$FreeBSD$");
48
49#include <sys/types.h>
50#include <sys/socket.h>
51#include <netinet/in.h>
52#include <arpa/inet.h>
53#include <arpa/nameser.h>
54#include <errno.h>
55#include <netdb.h>
56#include <resolv.h>
57#include <stdio.h>
58#include <string.h>
59#include <stdarg.h>
60#include <nsswitch.h>
61#include "netdb_private.h"
62
63void
64_setnethtent(int f, struct netent_data *ned)
65{
66
67        if (ned->netf == NULL)
68                ned->netf = fopen(_PATH_NETWORKS, "r");
69        else
70                rewind(ned->netf);
71        ned->stayopen |= f;
72}
73
74void
75_endnethtent(struct netent_data *ned)
76{
77
78        if (ned->netf) {
79                fclose(ned->netf);
80                ned->netf = NULL;
81        }
82        ned->stayopen = 0;
83}
84
85static int
86getnetent_p(struct netent *ne, struct netent_data *ned)
87{
88        char *p, *bp, *ep;
89        char *cp, **q;
90        int len;
91        char line[BUFSIZ + 1];
92
93        if (ned->netf == NULL &&
94            (ned->netf = fopen(_PATH_NETWORKS, "r")) == NULL)
95                return (-1);
96again:
97        p = fgets(line, sizeof line, ned->netf);
98        if (p == NULL)
99                return (-1);
100        if (*p == '#')
101                goto again;
102        cp = strpbrk(p, "#\n");
103        if (cp != NULL)
104                *cp = '\0';
105        bp = ned->netbuf;
106        ep = ned->netbuf + sizeof ned->netbuf;
107        ne->n_name = bp;
108        cp = strpbrk(p, " \t");
109        if (cp == NULL)
110                goto again;
111        *cp++ = '\0';
112        len = strlen(p) + 1;
113        if (ep - bp < len) {
114                RES_SET_H_ERRNO(__res_state(), NO_RECOVERY);
115                return (-1);
116        }
117        strlcpy(bp, p, ep - bp);
118        bp += len;
119        while (*cp == ' ' || *cp == '\t')
120                cp++;
121        p = strpbrk(cp, " \t");
122        if (p != NULL)
123                *p++ = '\0';
124        ne->n_net = inet_network(cp);
125        ne->n_addrtype = AF_INET;
126        q = ne->n_aliases = ned->net_aliases;
127        if (p != NULL) {
128                cp = p;
129                while (cp && *cp) {
130                        if (*cp == ' ' || *cp == '\t') {
131                                cp++;
132                                continue;
133                        }
134                        if (q >= &ned->net_aliases[_MAXALIASES - 1])
135                                break;
136                        p = strpbrk(cp, " \t");
137                        if (p != NULL)
138                                *p++ = '\0';
139                        len = strlen(cp) + 1;
140                        if (ep - bp < len)
141                                break;
142                        strlcpy(bp, cp, ep - bp);
143                        *q++ = bp;
144                        bp += len;
145                        cp = p;
146                }
147        }
148        *q = NULL;
149        return (0);
150}
151
152int
153getnetent_r(struct netent *nptr, char *buffer, size_t buflen,
154    struct netent **result, int *h_errnop)
155{
156        struct netent_data *ned;
157        struct netent ne;
158        res_state statp;
159
160        statp = __res_state();
161        if ((ned = __netent_data_init()) == NULL) {
162                RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
163                *h_errnop = statp->res_h_errno;
164                return (-1);
165        }
166        if (getnetent_p(&ne, ned) != 0)
167                return (-1);
168        if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
169                RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
170                *h_errnop = statp->res_h_errno;
171                return ((errno != 0) ? errno : -1);
172        }
173        *result = nptr;
174        return (0);
175}
176
177struct netent *
178getnetent(void)
179{
180        struct netdata *nd;
181        struct netent *rval;
182        int ret_h_errno;
183
184        if ((nd = __netdata_init()) == NULL)
185                return (NULL);
186        if (getnetent_r(&nd->net, nd->data, sizeof(nd->data), &rval,
187            &ret_h_errno) != 0)
188                return (NULL);
189        return (rval);
190}
191
192int
193_ht_getnetbyname(void *rval, void *cb_data, va_list ap)
194{
195        const char *name;
196        char *buffer;
197        size_t buflen;
198        int *errnop, *h_errnop;
199        struct netent *nptr, ne;
200        struct netent_data *ned;
201        char **cp;
202        res_state statp;
203        int error;
204
205        name = va_arg(ap, const char *);
206        nptr = va_arg(ap, struct netent *);
207        buffer = va_arg(ap, char *);
208        buflen = va_arg(ap, size_t);
209        errnop = va_arg(ap, int *);
210        h_errnop = va_arg(ap, int *);
211
212        statp = __res_state();
213        if ((ned = __netent_data_init()) == NULL) {
214                RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
215                *h_errnop = statp->res_h_errno;
216                return (NS_UNAVAIL);
217        }
218
219        _setnethtent(ned->stayopen, ned);
220        while ((error = getnetent_p(&ne, ned)) == 0) {
221                if (strcasecmp(ne.n_name, name) == 0)
222                        break;
223                for (cp = ne.n_aliases; *cp != 0; cp++)
224                        if (strcasecmp(*cp, name) == 0)
225                                goto found;
226        }
227found:
228        if (!ned->stayopen)
229                _endnethtent(ned);
230        if (error != 0) {
231                *h_errnop = statp->res_h_errno;
232                return (NS_NOTFOUND);
233        }
234        if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
235                *errnop = errno;
236                RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
237                *h_errnop = statp->res_h_errno;
238                return (NS_RETURN);
239        }
240        *((struct netent **)rval) = nptr;
241        return (NS_SUCCESS);
242}
243
244int
245_ht_getnetbyaddr(void *rval, void *cb_data, va_list ap)
246{
247        uint32_t net;
248        int type;
249        char *buffer;
250        size_t buflen;
251        int *errnop, *h_errnop;
252        struct netent *nptr, ne;
253        struct netent_data *ned;
254        res_state statp;
255        int error;
256
257        net = va_arg(ap, uint32_t);
258        type = va_arg(ap, int);
259        nptr = va_arg(ap, struct netent *);
260        buffer = va_arg(ap, char *);
261        buflen = va_arg(ap, size_t);
262        errnop = va_arg(ap, int *);
263        h_errnop = va_arg(ap, int *);
264
265        statp = __res_state();
266        if ((ned = __netent_data_init()) == NULL) {
267                RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
268                *h_errnop = statp->res_h_errno;
269                return (NS_UNAVAIL);
270        }
271
272        _setnethtent(ned->stayopen, ned);
273        while ((error = getnetent_p(&ne, ned)) == 0)
274                if (ne.n_addrtype == type && ne.n_net == net)
275                        break;
276        if (!ned->stayopen)
277                _endnethtent(ned);
278        if (error != 0) {
279                *h_errnop = statp->res_h_errno;
280                return (NS_NOTFOUND);
281        }
282        if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
283                *errnop = errno;
284                RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
285                *h_errnop = statp->res_h_errno;
286                return (NS_RETURN);
287        }
288        *((struct netent **)rval) = nptr;
289        return (NS_SUCCESS);
290}
Note: See TracBrowser for help on using the repository browser.