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 36 #include <kgssapi/gssapi.h> 37 #include <kgssapi/gssapi_impl.h> 38 #include <rpc/rpc.h> 39 40 #include "gssd.h" 41 #include "kgss_if.h" 42 43 OM_uint32 gss_accept_sec_context(OM_uint32 *minor_status, 44 gss_ctx_id_t *context_handle, 45 const gss_cred_id_t acceptor_cred_handle, 46 const gss_buffer_t input_token, 47 const gss_channel_bindings_t input_chan_bindings, 48 gss_name_t *src_name, 49 gss_OID *mech_type, 50 gss_buffer_t output_token, 51 OM_uint32 *ret_flags, 52 OM_uint32 *time_rec, 53 gss_cred_id_t *delegated_cred_handle) 54 { 55 struct accept_sec_context_res res; 56 struct accept_sec_context_args args; 57 enum clnt_stat stat; 58 gss_ctx_id_t ctx = *context_handle; 59 gss_name_t name; 60 gss_cred_id_t cred; 61 62 if (!kgss_gssd_handle) 63 return (GSS_S_FAILURE); 64 65 if (ctx) 66 args.ctx = ctx->handle; 67 else 68 args.ctx = 0; 69 if (acceptor_cred_handle) 70 args.cred = acceptor_cred_handle->handle; 71 else 72 args.cred = 0; 73 args.input_token = *input_token; 74 args.input_chan_bindings = input_chan_bindings; 75 76 bzero(&res, sizeof(res)); 77 stat = gssd_accept_sec_context_1(&args, &res, kgss_gssd_handle); 78 if (stat != RPC_SUCCESS) { 79 *minor_status = stat; 80 return (GSS_S_FAILURE); 81 } 82 83 if (res.major_status != GSS_S_COMPLETE 84 && res.major_status != GSS_S_CONTINUE_NEEDED) { 85 *minor_status = res.minor_status; 86 xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res); 87 return (res.major_status); 88 } 89 90 *minor_status = res.minor_status; 91 92 if (!ctx) { 93 ctx = kgss_create_context(res.mech_type); 94 if (!ctx) { 95 xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res); 96 *minor_status = 0; 97 return (GSS_S_BAD_MECH); 98 } 99 } 100 *context_handle = ctx; 101 102 ctx->handle = res.ctx; 103 name = malloc(sizeof(struct _gss_name_t), M_GSSAPI, M_WAITOK); 104 name->handle = res.src_name; 105 if (src_name) { 106 *src_name = name; 107 } else { 108 OM_uint32 junk; 109 gss_release_name(&junk, &name); 110 } 111 if (mech_type) 112 *mech_type = KGSS_MECH_TYPE(ctx); 113 kgss_copy_buffer(&res.output_token, output_token); 114 if (ret_flags) 115 *ret_flags = res.ret_flags; 116 if (time_rec) 117 *time_rec = res.time_rec; 118 cred = malloc(sizeof(struct _gss_cred_id_t), M_GSSAPI, M_WAITOK); 119 cred->handle = res.delegated_cred_handle; 120 if (delegated_cred_handle) { 121 *delegated_cred_handle = cred; 122 } else { 123 OM_uint32 junk; 124 gss_release_cred(&junk, &cred); 125 } 126 127 xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res); 128 129 /* 130 * If the context establishment is complete, export it from 131 * userland and hand the result (which includes key material 132 * etc.) to the kernel implementation. 133 */ 134 if (res.major_status == GSS_S_COMPLETE) 135 res.major_status = kgss_transfer_context(ctx); 136 137 return (res.major_status); 138 } 139