1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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/param.h> 31 #include <sys/kernel.h> 32 #include <sys/kobj.h> 33 #include <sys/lock.h> 34 #include <sys/malloc.h> 35 #include <sys/mutex.h> 36 #include <sys/proc.h> 37 38 #include <kgssapi/gssapi.h> 39 #include <kgssapi/gssapi_impl.h> 40 #include <rpc/rpc.h> 41 42 #include "gssd.h" 43 #include "kgss_if.h" 44 45 OM_uint32 46 gss_init_sec_context(OM_uint32 * minor_status, 47 const gss_cred_id_t initiator_cred_handle, 48 gss_ctx_id_t * context_handle, 49 const gss_name_t target_name, 50 const gss_OID input_mech_type, 51 OM_uint32 req_flags, 52 OM_uint32 time_req, 53 const gss_channel_bindings_t input_chan_bindings, 54 const gss_buffer_t input_token, 55 gss_OID * actual_mech_type, 56 gss_buffer_t output_token, 57 OM_uint32 * ret_flags, 58 OM_uint32 * time_rec) 59 { 60 struct init_sec_context_res res; 61 struct init_sec_context_args args; 62 enum clnt_stat stat; 63 gss_ctx_id_t ctx = *context_handle; 64 CLIENT *cl; 65 66 *minor_status = 0; 67 68 cl = kgss_gssd_client(); 69 if (cl == NULL) 70 return (GSS_S_FAILURE); 71 72 args.uid = curthread->td_ucred->cr_uid; 73 if (initiator_cred_handle) 74 args.cred = initiator_cred_handle->handle; 75 else 76 args.cred = 0; 77 if (ctx) 78 args.ctx = ctx->handle; 79 else 80 args.ctx = 0; 81 args.name = target_name->handle; 82 args.mech_type = input_mech_type; 83 args.req_flags = req_flags; 84 args.time_req = time_req; 85 args.input_chan_bindings = input_chan_bindings; 86 if (input_token) 87 args.input_token = *input_token; 88 else { 89 args.input_token.length = 0; 90 args.input_token.value = NULL; 91 } 92 93 bzero(&res, sizeof(res)); 94 stat = gssd_init_sec_context_1(&args, &res, cl); 95 CLNT_RELEASE(cl); 96 if (stat != RPC_SUCCESS) { 97 *minor_status = stat; 98 return (GSS_S_FAILURE); 99 } 100 101 if (res.major_status != GSS_S_COMPLETE 102 && res.major_status != GSS_S_CONTINUE_NEEDED) { 103 *minor_status = res.minor_status; 104 xdr_free((xdrproc_t) xdr_init_sec_context_res, &res); 105 return (res.major_status); 106 } 107 108 *minor_status = res.minor_status; 109 110 if (!ctx) { 111 ctx = kgss_create_context(res.actual_mech_type); 112 if (!ctx) { 113 xdr_free((xdrproc_t) xdr_init_sec_context_res, &res); 114 *minor_status = 0; 115 return (GSS_S_BAD_MECH); 116 } 117 } 118 *context_handle = ctx; 119 ctx->handle = res.ctx; 120 if (actual_mech_type) 121 *actual_mech_type = KGSS_MECH_TYPE(ctx); 122 kgss_copy_buffer(&res.output_token, output_token); 123 if (ret_flags) 124 *ret_flags = res.ret_flags; 125 if (time_rec) 126 *time_rec = res.time_rec; 127 128 xdr_free((xdrproc_t) xdr_init_sec_context_res, &res); 129 130 /* 131 * If the context establishment is complete, export it from 132 * userland and hand the result (which includes key material 133 * etc.) to the kernel implementation. 134 */ 135 if (res.major_status == GSS_S_COMPLETE) 136 res.major_status = kgss_transfer_context(ctx); 137 138 return (res.major_status); 139 } 140