gss_accept_sec_context.c revision 259065
1251881Speter/*- 2251881Speter * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 3251881Speter * Authors: Doug Rabson <dfr@rabson.org> 4251881Speter * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org> 5251881Speter * 6251881Speter * Redistribution and use in source and binary forms, with or without 7251881Speter * modification, are permitted provided that the following conditions 8251881Speter * are met: 9251881Speter * 1. Redistributions of source code must retain the above copyright 10251881Speter * notice, this list of conditions and the following disclaimer. 11251881Speter * 2. Redistributions in binary form must reproduce the above copyright 12251881Speter * notice, this list of conditions and the following disclaimer in the 13251881Speter * documentation and/or other materials provided with the distribution. 14251881Speter * 15251881Speter * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16251881Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17251881Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18251881Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19251881Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20251881Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21251881Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22251881Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23251881Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24251881Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25251881Speter * SUCH DAMAGE. 26251881Speter */ 27251881Speter 28251881Speter#include <sys/cdefs.h> 29251881Speter__FBSDID("$FreeBSD: releng/10.0/sys/kgssapi/gss_accept_sec_context.c 244370 2012-12-18 00:25:48Z rmacklem $"); 30251881Speter 31251881Speter#include <sys/param.h> 32251881Speter#include <sys/kernel.h> 33251881Speter#include <sys/kobj.h> 34251881Speter#include <sys/lock.h> 35251881Speter#include <sys/malloc.h> 36251881Speter#include <sys/mutex.h> 37251881Speter 38251881Speter#include <kgssapi/gssapi.h> 39251881Speter#include <kgssapi/gssapi_impl.h> 40251881Speter#include <rpc/rpc.h> 41251881Speter 42251881Speter#include "gssd.h" 43251881Speter#include "kgss_if.h" 44251881Speter 45251881SpeterOM_uint32 gss_accept_sec_context(OM_uint32 *minor_status, 46251881Speter gss_ctx_id_t *context_handle, 47251881Speter const gss_cred_id_t acceptor_cred_handle, 48251881Speter const gss_buffer_t input_token, 49251881Speter const gss_channel_bindings_t input_chan_bindings, 50251881Speter gss_name_t *src_name, 51251881Speter gss_OID *mech_type, 52251881Speter gss_buffer_t output_token, 53251881Speter OM_uint32 *ret_flags, 54251881Speter OM_uint32 *time_rec, 55251881Speter gss_cred_id_t *delegated_cred_handle) 56251881Speter{ 57251881Speter struct accept_sec_context_res res; 58251881Speter struct accept_sec_context_args args; 59251881Speter enum clnt_stat stat; 60251881Speter gss_ctx_id_t ctx = *context_handle; 61251881Speter gss_name_t name; 62251881Speter gss_cred_id_t cred; 63251881Speter CLIENT *cl; 64251881Speter 65251881Speter cl = kgss_gssd_client(); 66251881Speter if (cl == NULL) { 67251881Speter *minor_status = 0; 68251881Speter return (GSS_S_FAILURE); 69251881Speter } 70251881Speter 71251881Speter if (ctx) 72251881Speter args.ctx = ctx->handle; 73251881Speter else 74251881Speter args.ctx = 0; 75251881Speter if (acceptor_cred_handle) 76251881Speter args.cred = acceptor_cred_handle->handle; 77251881Speter else 78251881Speter args.cred = 0; 79251881Speter args.input_token = *input_token; 80251881Speter args.input_chan_bindings = input_chan_bindings; 81251881Speter 82251881Speter bzero(&res, sizeof(res)); 83251881Speter stat = gssd_accept_sec_context_1(&args, &res, cl); 84251881Speter CLNT_RELEASE(cl); 85251881Speter if (stat != RPC_SUCCESS) { 86251881Speter *minor_status = stat; 87251881Speter return (GSS_S_FAILURE); 88251881Speter } 89251881Speter 90251881Speter if (res.major_status != GSS_S_COMPLETE 91251881Speter && res.major_status != GSS_S_CONTINUE_NEEDED) { 92251881Speter *minor_status = res.minor_status; 93251881Speter xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res); 94251881Speter return (res.major_status); 95251881Speter } 96251881Speter 97251881Speter *minor_status = res.minor_status; 98251881Speter 99251881Speter if (!ctx) { 100251881Speter ctx = kgss_create_context(res.mech_type); 101251881Speter if (!ctx) { 102251881Speter xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res); 103251881Speter *minor_status = 0; 104251881Speter return (GSS_S_BAD_MECH); 105251881Speter } 106251881Speter } 107251881Speter *context_handle = ctx; 108251881Speter 109251881Speter ctx->handle = res.ctx; 110251881Speter name = malloc(sizeof(struct _gss_name_t), M_GSSAPI, M_WAITOK); 111251881Speter name->handle = res.src_name; 112251881Speter if (src_name) { 113251881Speter *src_name = name; 114251881Speter } else { 115251881Speter OM_uint32 junk; 116251881Speter gss_release_name(&junk, &name); 117251881Speter } 118251881Speter if (mech_type) 119251881Speter *mech_type = KGSS_MECH_TYPE(ctx); 120251881Speter kgss_copy_buffer(&res.output_token, output_token); 121251881Speter if (ret_flags) 122251881Speter *ret_flags = res.ret_flags; 123251881Speter if (time_rec) 124251881Speter *time_rec = res.time_rec; 125251881Speter cred = malloc(sizeof(struct _gss_cred_id_t), M_GSSAPI, M_WAITOK); 126251881Speter cred->handle = res.delegated_cred_handle; 127251881Speter if (delegated_cred_handle) { 128251881Speter *delegated_cred_handle = cred; 129251881Speter } else { 130251881Speter OM_uint32 junk; 131251881Speter gss_release_cred(&junk, &cred); 132251881Speter } 133251881Speter 134251881Speter xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res); 135251881Speter 136251881Speter /* 137251881Speter * If the context establishment is complete, export it from 138251881Speter * userland and hand the result (which includes key material 139251881Speter * etc.) to the kernel implementation. 140251881Speter */ 141251881Speter if (res.major_status == GSS_S_COMPLETE) 142251881Speter res.major_status = kgss_transfer_context(ctx); 143251881Speter 144251881Speter return (res.major_status); 145251881Speter} 146251881Speter