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-rw-r--r--lib/libc/net/getnetbyht.c284
1 files changed, 284 insertions, 0 deletions
diff --git a/lib/libc/net/getnetbyht.c b/lib/libc/net/getnetbyht.c
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+++ b/lib/libc/net/getnetbyht.c
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+/*
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro
+ * Dep. Matematica Universidade de Coimbra, Portugal, Europe
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * from getnetent.c 1.1 (Coimbra) 93/06/02
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93";
+static char orig_rcsid[] = "From: Id: getnetent.c,v 8.4 1997/06/01 20:34:37 vixie Exp";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <netdb.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <nsswitch.h>
+#include "netdb_private.h"
+
+void
+_setnethtent(int f, struct netent_data *ned)
+{
+
+ if (ned->netf == NULL)
+ ned->netf = fopen(_PATH_NETWORKS, "r");
+ else
+ rewind(ned->netf);
+ ned->stayopen |= f;
+}
+
+void
+_endnethtent(struct netent_data *ned)
+{
+
+ if (ned->netf) {
+ fclose(ned->netf);
+ ned->netf = NULL;
+ }
+ ned->stayopen = 0;
+}
+
+static int
+getnetent_p(struct netent *ne, struct netent_data *ned)
+{
+ char *p, *bp, *ep;
+ char *cp, **q;
+ int len;
+ char line[BUFSIZ + 1];
+
+ if (ned->netf == NULL &&
+ (ned->netf = fopen(_PATH_NETWORKS, "r")) == NULL)
+ return (-1);
+again:
+ p = fgets(line, sizeof line, ned->netf);
+ if (p == NULL)
+ return (-1);
+ if (*p == '#')
+ goto again;
+ cp = strpbrk(p, "#\n");
+ if (cp != NULL)
+ *cp = '\0';
+ bp = ned->netbuf;
+ ep = ned->netbuf + sizeof ned->netbuf;
+ ne->n_name = bp;
+ cp = strpbrk(p, " \t");
+ if (cp == NULL)
+ goto again;
+ *cp++ = '\0';
+ len = strlen(p) + 1;
+ if (ep - bp < len) {
+ RES_SET_H_ERRNO(__res_state(), NO_RECOVERY);
+ return (-1);
+ }
+ strlcpy(bp, p, ep - bp);
+ bp += len;
+ while (*cp == ' ' || *cp == '\t')
+ cp++;
+ p = strpbrk(cp, " \t");
+ if (p != NULL)
+ *p++ = '\0';
+ ne->n_net = inet_network(cp);
+ ne->n_addrtype = AF_INET;
+ q = ne->n_aliases = ned->net_aliases;
+ if (p != NULL) {
+ cp = p;
+ while (cp && *cp) {
+ if (*cp == ' ' || *cp == '\t') {
+ cp++;
+ continue;
+ }
+ if (q >= &ned->net_aliases[_MAXALIASES - 1])
+ break;
+ p = strpbrk(cp, " \t");
+ if (p != NULL)
+ *p++ = '\0';
+ len = strlen(cp) + 1;
+ if (ep - bp < len)
+ break;
+ strlcpy(bp, cp, ep - bp);
+ *q++ = bp;
+ bp += len;
+ cp = p;
+ }
+ }
+ *q = NULL;
+ return (0);
+}
+
+int
+getnetent_r(struct netent *nptr, char *buffer, size_t buflen,
+ struct netent **result, int *h_errnop)
+{
+ struct netent_data *ned;
+ struct netent ne;
+ res_state statp;
+
+ statp = __res_state();
+ if ((ned = __netent_data_init()) == NULL) {
+ RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
+ *h_errnop = statp->res_h_errno;
+ return (-1);
+ }
+ if (getnetent_p(&ne, ned) != 0)
+ return (-1);
+ if (__copy_netent(&ne, nptr, buffer, buflen) != 0)
+ return (-1);
+ *result = nptr;
+ return (0);
+}
+
+struct netent *
+getnetent(void)
+{
+ struct netdata *nd;
+ struct netent *rval;
+ int ret_h_errno;
+
+ if ((nd = __netdata_init()) == NULL)
+ return (NULL);
+ if (getnetent_r(&nd->net, nd->data, sizeof(nd->data), &rval,
+ &ret_h_errno) != 0)
+ return (NULL);
+ return (rval);
+}
+
+int
+_ht_getnetbyname(void *rval, void *cb_data, va_list ap)
+{
+ const char *name;
+ char *buffer;
+ size_t buflen;
+ int *errnop, *h_errnop;
+ struct netent *nptr, ne;
+ struct netent_data *ned;
+ char **cp;
+ res_state statp;
+ int error;
+
+ name = va_arg(ap, const char *);
+ nptr = va_arg(ap, struct netent *);
+ buffer = va_arg(ap, char *);
+ buflen = va_arg(ap, size_t);
+ errnop = va_arg(ap, int *);
+ h_errnop = va_arg(ap, int *);
+
+ statp = __res_state();
+ if ((ned = __netent_data_init()) == NULL) {
+ RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
+ *h_errnop = statp->res_h_errno;
+ return (NS_UNAVAIL);
+ }
+
+ _setnethtent(ned->stayopen, ned);
+ while ((error = getnetent_p(&ne, ned)) == 0) {
+ if (strcasecmp(ne.n_name, name) == 0)
+ break;
+ for (cp = ne.n_aliases; *cp != 0; cp++)
+ if (strcasecmp(*cp, name) == 0)
+ goto found;
+ }
+found:
+ if (!ned->stayopen)
+ _endnethtent(ned);
+ if (error != 0) {
+ *h_errnop = statp->res_h_errno;
+ return (NS_NOTFOUND);
+ }
+ if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
+ *h_errnop = statp->res_h_errno;
+ return (NS_NOTFOUND);
+ }
+ *((struct netent **)rval) = nptr;
+ return (NS_SUCCESS);
+}
+
+int
+_ht_getnetbyaddr(void *rval, void *cb_data, va_list ap)
+{
+ uint32_t net;
+ int type;
+ char *buffer;
+ size_t buflen;
+ int *errnop, *h_errnop;
+ struct netent *nptr, ne;
+ struct netent_data *ned;
+ res_state statp;
+ int error;
+
+ net = va_arg(ap, uint32_t);
+ type = va_arg(ap, int);
+ nptr = va_arg(ap, struct netent *);
+ buffer = va_arg(ap, char *);
+ buflen = va_arg(ap, size_t);
+ errnop = va_arg(ap, int *);
+ h_errnop = va_arg(ap, int *);
+
+ statp = __res_state();
+ if ((ned = __netent_data_init()) == NULL) {
+ RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
+ *h_errnop = statp->res_h_errno;
+ return (NS_UNAVAIL);
+ }
+
+ _setnethtent(ned->stayopen, ned);
+ while ((error = getnetent_p(&ne, ned)) == 0)
+ if (ne.n_addrtype == type && ne.n_net == net)
+ break;
+ if (!ned->stayopen)
+ _endnethtent(ned);
+ if (error != 0) {
+ *h_errnop = statp->res_h_errno;
+ return (NS_NOTFOUND);
+ }
+ if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
+ *h_errnop = statp->res_h_errno;
+ return (NS_NOTFOUND);
+ }
+ *((struct netent **)rval) = nptr;
+ return (NS_SUCCESS);
+}
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