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kgssapi: Add a new file with a function for a future commit
A future commit needs a new upcall function that can do reverse DNS in order to generate a "service principal". This patch adds the file. MFC after: 1 month
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parent
0514f032c8
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428879dc91
85
sys/kgssapi/gss_ip_to_dns.c
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85
sys/kgssapi/gss_ip_to_dns.c
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
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* Authors: Doug Rabson <dfr@rabson.org>
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* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/kobj.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <kgssapi/gssapi.h>
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#include <kgssapi/gssapi_impl.h>
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#include "gssd.h"
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OM_uint32
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gss_ip_to_dns(OM_uint32 *minor_status,
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char *ip_addr,
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char *dns_name)
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{
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struct ip_to_dns_res res;
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struct ip_to_dns_args args;
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enum clnt_stat stat;
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CLIENT *cl;
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*minor_status = 0;
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cl = kgss_gssd_client();
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if (cl == NULL)
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return (GSS_S_FAILURE);
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args.ip_addr.ip_addr_len = strlen(ip_addr);
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args.ip_addr.ip_addr_val = mem_alloc(args.ip_addr.ip_addr_len);
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memcpy(args.ip_addr.ip_addr_val, ip_addr, args.ip_addr.ip_addr_len);
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bzero(&res, sizeof(res));
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stat = gssd_ip_to_dns_1(&args, &res, cl);
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CLNT_RELEASE(cl);
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if (stat != RPC_SUCCESS) {
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*minor_status = stat;
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return (GSS_S_FAILURE);
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}
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if (res.major_status != GSS_S_COMPLETE) {
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*minor_status = res.minor_status;
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return (res.major_status);
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}
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if (res.dns_name.dns_name_len == 0 ||
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res.dns_name.dns_name_len >= NI_MAXHOST) {
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*minor_status = 0;
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return (GSS_S_FAILURE);
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}
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memcpy(dns_name, res.dns_name.dns_name_val, res.dns_name.dns_name_len);
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dns_name[res.dns_name.dns_name_len] = '\0';
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return (GSS_S_COMPLETE);
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}
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