Date: Sun, 24 Dec 2023 01:03:20 GMT From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 1ae724792ced - stable/14 - kgssapi: Add a new file with a function for a future commit Message-ID: <202312240103.3BO13K74049811@gitrepo.freebsd.org>
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The branch stable/14 has been updated by rmacklem: URL: https://cgit.FreeBSD.org/src/commit/?id=1ae724792ced8ea56ecc6a9c19b67741be9859cc commit 1ae724792ced8ea56ecc6a9c19b67741be9859cc Author: Rick Macklem <rmacklem@FreeBSD.org> AuthorDate: 2023-10-23 20:17:16 +0000 Commit: Rick Macklem <rmacklem@FreeBSD.org> CommitDate: 2023-12-24 01:01:11 +0000 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. (cherry picked from commit 428879dc9110240ad0940c7ac8cd69bcaf6e686e) --- sys/kgssapi/gss_ip_to_dns.c | 85 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/sys/kgssapi/gss_ip_to_dns.c b/sys/kgssapi/gss_ip_to_dns.c new file mode 100644 index 000000000000..d2be006d5b3e --- /dev/null +++ b/sys/kgssapi/gss_ip_to_dns.c @@ -0,0 +1,85 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ + * Authors: Doug Rabson <dfr@rabson.org> + * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org> + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + */ + +#include <sys/cdefs.h> +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/kobj.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/mutex.h> + +#include <kgssapi/gssapi.h> +#include <kgssapi/gssapi_impl.h> + +#include "gssd.h" + +OM_uint32 +gss_ip_to_dns(OM_uint32 *minor_status, + char *ip_addr, + char *dns_name) +{ + struct ip_to_dns_res res; + struct ip_to_dns_args args; + enum clnt_stat stat; + CLIENT *cl; + + *minor_status = 0; + cl = kgss_gssd_client(); + if (cl == NULL) + return (GSS_S_FAILURE); + + args.ip_addr.ip_addr_len = strlen(ip_addr); + args.ip_addr.ip_addr_val = mem_alloc(args.ip_addr.ip_addr_len); + memcpy(args.ip_addr.ip_addr_val, ip_addr, args.ip_addr.ip_addr_len); + + bzero(&res, sizeof(res)); + stat = gssd_ip_to_dns_1(&args, &res, cl); + CLNT_RELEASE(cl); + if (stat != RPC_SUCCESS) { + *minor_status = stat; + return (GSS_S_FAILURE); + } + + if (res.major_status != GSS_S_COMPLETE) { + *minor_status = res.minor_status; + return (res.major_status); + } + + if (res.dns_name.dns_name_len == 0 || + res.dns_name.dns_name_len >= NI_MAXHOST) { + *minor_status = 0; + return (GSS_S_FAILURE); + } + + memcpy(dns_name, res.dns_name.dns_name_val, res.dns_name.dns_name_len); + dns_name[res.dns_name.dns_name_len] = '\0'; + + return (GSS_S_COMPLETE); +}
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