1 /*- 2 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 3 * Authors: Doug Rabson <dfr@rabson.org> 4 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/kernel.h> 33 #include <sys/kobj.h> 34 #include <sys/malloc.h> 35 #include <sys/proc.h> 36 37 #include <kgssapi/gssapi.h> 38 #include <kgssapi/gssapi_impl.h> 39 #include <rpc/rpc.h> 40 41 #include "gssd.h" 42 #include "kgss_if.h" 43 44 OM_uint32 45 gss_init_sec_context(OM_uint32 * minor_status, 46 const gss_cred_id_t initiator_cred_handle, 47 gss_ctx_id_t * context_handle, 48 const gss_name_t target_name, 49 const gss_OID input_mech_type, 50 OM_uint32 req_flags, 51 OM_uint32 time_req, 52 const gss_channel_bindings_t input_chan_bindings, 53 const gss_buffer_t input_token, 54 gss_OID * actual_mech_type, 55 gss_buffer_t output_token, 56 OM_uint32 * ret_flags, 57 OM_uint32 * time_rec) 58 { 59 struct init_sec_context_res res; 60 struct init_sec_context_args args; 61 enum clnt_stat stat; 62 gss_ctx_id_t ctx = *context_handle; 63 64 *minor_status = 0; 65 66 if (!kgss_gssd_handle) 67 return (GSS_S_FAILURE); 68 69 args.uid = curthread->td_ucred->cr_uid; 70 if (initiator_cred_handle) 71 args.cred = initiator_cred_handle->handle; 72 else 73 args.cred = 0; 74 if (ctx) 75 args.ctx = ctx->handle; 76 else 77 args.ctx = 0; 78 args.name = target_name->handle; 79 args.mech_type = input_mech_type; 80 args.req_flags = req_flags; 81 args.time_req = time_req; 82 args.input_chan_bindings = input_chan_bindings; 83 if (input_token) 84 args.input_token = *input_token; 85 else { 86 args.input_token.length = 0; 87 args.input_token.value = NULL; 88 } 89 90 bzero(&res, sizeof(res)); 91 stat = gssd_init_sec_context_1(&args, &res, kgss_gssd_handle); 92 if (stat != RPC_SUCCESS) { 93 *minor_status = stat; 94 return (GSS_S_FAILURE); 95 } 96 97 if (res.major_status != GSS_S_COMPLETE 98 && res.major_status != GSS_S_CONTINUE_NEEDED) { 99 *minor_status = res.minor_status; 100 xdr_free((xdrproc_t) xdr_init_sec_context_res, &res); 101 return (res.major_status); 102 } 103 104 *minor_status = res.minor_status; 105 106 if (!ctx) { 107 ctx = kgss_create_context(res.actual_mech_type); 108 if (!ctx) { 109 xdr_free((xdrproc_t) xdr_init_sec_context_res, &res); 110 *minor_status = 0; 111 return (GSS_S_BAD_MECH); 112 } 113 } 114 *context_handle = ctx; 115 ctx->handle = res.ctx; 116 if (actual_mech_type) 117 *actual_mech_type = KGSS_MECH_TYPE(ctx); 118 kgss_copy_buffer(&res.output_token, output_token); 119 if (ret_flags) 120 *ret_flags = res.ret_flags; 121 if (time_rec) 122 *time_rec = res.time_rec; 123 124 xdr_free((xdrproc_t) xdr_init_sec_context_res, &res); 125 126 /* 127 * If the context establishment is complete, export it from 128 * userland and hand the result (which includes key material 129 * etc.) to the kernel implementation. 130 */ 131 if (res.major_status == GSS_S_COMPLETE) 132 res.major_status = kgss_transfer_context(ctx); 133 134 return (res.major_status); 135 } 136