144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)getproto.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <errno.h>
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#include <netdb.h>
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#include <nsswitch.h>
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#include "netdb_private.h"
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#ifdef NS_CACHING
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#include "nscache.h"
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#endif
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#include "nss_tls.h"
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static const ns_src defaultsrc[] = {
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{ NSSRC_FILES, NS_SUCCESS },
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{ NULL, 0 }
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};
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#ifdef NS_CACHING
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extern int __proto_id_func(char *, size_t *, va_list, void *);
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extern int __proto_marshal_func(char *, size_t *, void *, va_list, void *);
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extern int __proto_unmarshal_func(char *, size_t, void *, va_list, void *);
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#endif
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static int
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files_getprotobynumber(void *retval, void *mdata, va_list ap)
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{
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struct protoent pe;
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struct protoent_data *ped;
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int error;
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int number;
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struct protoent *pptr;
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char *buffer;
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size_t buflen;
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int *errnop;
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number = va_arg(ap, int);
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pptr = va_arg(ap, struct protoent *);
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buffer = va_arg(ap, char *);
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buflen = va_arg(ap, size_t);
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errnop = va_arg(ap, int *);
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if ((ped = __protoent_data_init()) == NULL) {
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*errnop = errno;
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return (NS_NOTFOUND);
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}
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__setprotoent_p(ped->stayopen, ped);
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while ((error = __getprotoent_p(&pe, ped)) == 0)
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if (pe.p_proto == number)
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break;
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if (!ped->stayopen)
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__endprotoent_p(ped);
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if (error != 0) {
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*errnop = errno;
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return (NS_NOTFOUND);
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}
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if (__copy_protoent(&pe, pptr, buffer, buflen) != 0) {
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*errnop = errno;
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return (NS_RETURN);
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}
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*((struct protoent **)retval) = pptr;
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return (NS_SUCCESS);
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}
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int
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getprotobynumber_r(int proto, struct protoent *pptr, char *buffer,
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size_t buflen, struct protoent **result)
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{
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#ifdef NS_CACHING
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static const nss_cache_info cache_info =
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NS_COMMON_CACHE_INFO_INITIALIZER(
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protocols, (void *)nss_lt_id,
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__proto_id_func, __proto_marshal_func, __proto_unmarshal_func);
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#endif
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static const ns_dtab dtab[] = {
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{ NSSRC_FILES, files_getprotobynumber, NULL },
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#ifdef NS_CACHING
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NS_CACHE_CB(&cache_info)
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#endif
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{ NULL, NULL, NULL }
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};
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int rv, ret_errno;
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ret_errno = 0;
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*result = NULL;
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rv = nsdispatch(result, dtab, NSDB_PROTOCOLS, "getprotobynumber_r",
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defaultsrc, proto, pptr, buffer, buflen, &ret_errno);
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if (rv != NS_SUCCESS) {
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errno = ret_errno;
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return (ret_errno);
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}
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return (0);
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}
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struct protoent *
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getprotobynumber(int proto)
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{
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struct protodata *pd;
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struct protoent *rval;
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if ((pd = __protodata_init()) == NULL)
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return (NULL);
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if (getprotobynumber_r(proto, &pd->proto, pd->data, sizeof(pd->data),
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&rval) != 0)
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return (NULL);
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return (rval);
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}
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