1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 5 * Authors: Doug Rabson <dfr@rabson.org> 6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/jail.h> 35 #include <sys/kernel.h> 36 #include <sys/kobj.h> 37 #include <sys/lock.h> 38 #include <sys/malloc.h> 39 #include <sys/mutex.h> 40 41 #include <kgssapi/gssapi.h> 42 #include <kgssapi/gssapi_impl.h> 43 44 #include "gssd.h" 45 46 OM_uint32 47 gss_delete_sec_context(OM_uint32 *minor_status, gss_ctx_id_t *context_handle, 48 gss_buffer_t output_token) 49 { 50 struct delete_sec_context_res res; 51 struct delete_sec_context_args args; 52 enum clnt_stat stat; 53 gss_ctx_id_t ctx; 54 CLIENT *cl; 55 56 *minor_status = 0; 57 58 KGSS_CURVNET_SET_QUIET(KGSS_TD_TO_VNET(curthread)); 59 if (!KGSS_VNET(kgss_gssd_handle)) { 60 KGSS_CURVNET_RESTORE(); 61 return (GSS_S_FAILURE); 62 } 63 KGSS_CURVNET_RESTORE(); 64 65 if (*context_handle) { 66 ctx = *context_handle; 67 68 /* 69 * If we are past the context establishment phase, let 70 * the in-kernel code do the delete, otherwise 71 * userland needs to deal with it. 72 */ 73 if (ctx->handle) { 74 args.ctx = ctx->handle; 75 cl = kgss_gssd_client(); 76 if (cl == NULL) 77 return (GSS_S_FAILURE); 78 79 bzero(&res, sizeof(res)); 80 stat = gssd_delete_sec_context_1(&args, &res, cl); 81 CLNT_RELEASE(cl); 82 if (stat != RPC_SUCCESS) { 83 *minor_status = stat; 84 return (GSS_S_FAILURE); 85 } 86 87 if (output_token) 88 kgss_copy_buffer(&res.output_token, 89 output_token); 90 xdr_free((xdrproc_t) xdr_delete_sec_context_res, &res); 91 92 kgss_delete_context(ctx, NULL); 93 } else { 94 kgss_delete_context(ctx, output_token); 95 } 96 *context_handle = NULL; 97 } else { 98 if (output_token) { 99 output_token->length = 0; 100 output_token->value = NULL; 101 } 102 } 103 104 return (GSS_S_COMPLETE); 105 } 106