gss_init_sec_context.c revision 178828
1193323Sed/*- 2193323Sed * Copyright (c) 2005 Doug Rabson 3193323Sed * All rights reserved. 4193323Sed * 5193323Sed * Redistribution and use in source and binary forms, with or without 6193323Sed * modification, are permitted provided that the following conditions 7193323Sed * are met: 8193323Sed * 1. Redistributions of source code must retain the above copyright 9193323Sed * notice, this list of conditions and the following disclaimer. 10193323Sed * 2. Redistributions in binary form must reproduce the above copyright 11193323Sed * notice, this list of conditions and the following disclaimer in the 12193323Sed * documentation and/or other materials provided with the distribution. 13193323Sed * 14193323Sed * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15193323Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16193323Sed * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17193323Sed * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18198090Srdivacky * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19198090Srdivacky * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20218893Sdim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21234353Sdim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22198090Srdivacky * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23198090Srdivacky * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24193323Sed * SUCH DAMAGE. 25193323Sed * 26193323Sed * $FreeBSD: head/lib/libgssapi/gss_init_sec_context.c 178828 2008-05-07 13:53:12Z dfr $ 27193323Sed */ 28193323Sed 29193323Sed#include <gssapi/gssapi.h> 30193323Sed#include <stdlib.h> 31193323Sed#include <string.h> 32193323Sed#include <errno.h> 33193323Sed 34193323Sed#include "mech_switch.h" 35193323Sed#include "name.h" 36193323Sed#include "cred.h" 37193323Sed#include "context.h" 38193323Sed#include "utils.h" 39193323Sed 40193323Sedstatic gss_cred_id_t 41193323Sed_gss_mech_cred_find(gss_cred_id_t cred_handle, gss_OID mech_type) 42193323Sed{ 43193323Sed struct _gss_cred *cred = (struct _gss_cred *)cred_handle; 44193323Sed struct _gss_mechanism_cred *mc; 45198090Srdivacky 46193323Sed if (cred == NULL) 47193323Sed return GSS_C_NO_CREDENTIAL; 48193323Sed 49193323Sed SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) { 50193323Sed if (gss_oid_equal(mech_type, mc->gmc_mech_oid)) 51193323Sed return mc->gmc_cred; 52193323Sed } 53193323Sed return GSS_C_NO_CREDENTIAL; 54193323Sed} 55193323Sed 56193323SedOM_uint32 57193323Sedgss_init_sec_context(OM_uint32 * minor_status, 58193323Sed const gss_cred_id_t initiator_cred_handle, 59193323Sed gss_ctx_id_t * context_handle, 60193323Sed const gss_name_t target_name, 61193323Sed const gss_OID input_mech_type, 62193323Sed OM_uint32 req_flags, 63193323Sed OM_uint32 time_req, 64193323Sed const gss_channel_bindings_t input_chan_bindings, 65193323Sed const gss_buffer_t input_token, 66193323Sed gss_OID * actual_mech_type, 67193323Sed gss_buffer_t output_token, 68193323Sed OM_uint32 * ret_flags, 69193323Sed OM_uint32 * time_rec) 70193323Sed{ 71193323Sed OM_uint32 major_status; 72193323Sed struct _gss_mech_switch *m; 73193323Sed struct _gss_name *name = (struct _gss_name *) target_name; 74193323Sed struct _gss_mechanism_name *mn; 75193323Sed struct _gss_context *ctx = (struct _gss_context *) *context_handle; 76193323Sed gss_cred_id_t cred_handle; 77193323Sed int allocated_ctx; 78193323Sed gss_OID mech_type = input_mech_type; 79193323Sed 80193323Sed *minor_status = 0; 81193323Sed 82193323Sed _gss_buffer_zero(output_token); 83193323Sed if (actual_mech_type) 84193323Sed *actual_mech_type = GSS_C_NO_OID; 85193323Sed if (ret_flags) 86193323Sed *ret_flags = 0; 87193323Sed if (time_rec) 88193323Sed *time_rec = 0; 89193323Sed 90193323Sed /* 91193323Sed * If we haven't allocated a context yet, do so now and lookup 92193323Sed * the mechanism switch table. If we have one already, make 93193323Sed * sure we use the same mechanism switch as before. 94193323Sed */ 95193323Sed if (!ctx) { 96193323Sed if (mech_type == GSS_C_NO_OID) { 97193323Sed _gss_load_mech(); 98193323Sed if (_gss_mech_oids == GSS_C_NO_OID_SET 99193323Sed || _gss_mech_oids->count == 0) 100193323Sed return (GSS_S_BAD_MECH); 101193323Sed mech_type = &_gss_mech_oids->elements[0]; 102193323Sed } 103193323Sed 104193323Sed ctx = malloc(sizeof(struct _gss_context)); 105193323Sed if (!ctx) { 106193323Sed *minor_status = ENOMEM; 107193323Sed return (GSS_S_FAILURE); 108193323Sed } 109193323Sed memset(ctx, 0, sizeof(struct _gss_context)); 110193323Sed m = ctx->gc_mech = _gss_find_mech_switch(mech_type); 111193323Sed if (!m) { 112193323Sed free(ctx); 113193323Sed return (GSS_S_BAD_MECH); 114193323Sed } 115193323Sed allocated_ctx = 1; 116193323Sed } else { 117193323Sed m = ctx->gc_mech; 118193323Sed mech_type = &ctx->gc_mech->gm_mech_oid; 119193323Sed allocated_ctx = 0; 120193323Sed } 121193323Sed 122193323Sed /* 123193323Sed * Find the MN for this mechanism. 124193323Sed */ 125193323Sed major_status = _gss_find_mn(minor_status, name, mech_type, &mn); 126193323Sed if (major_status != GSS_S_COMPLETE) { 127193323Sed if (allocated_ctx) 128193323Sed free(ctx); 129193323Sed return (major_status); 130193323Sed } 131234353Sdim 132193323Sed /* 133193323Sed * If we have a cred, find the cred for this mechanism. 134193323Sed */ 135193323Sed cred_handle = _gss_mech_cred_find(initiator_cred_handle, mech_type); 136193323Sed 137193323Sed major_status = m->gm_init_sec_context(minor_status, 138193323Sed cred_handle, 139193323Sed &ctx->gc_ctx, 140263508Sdim mn->gmn_name, 141234353Sdim mech_type, 142263508Sdim req_flags, 143234353Sdim time_req, 144193323Sed input_chan_bindings, 145234353Sdim input_token, 146193323Sed actual_mech_type, 147193323Sed output_token, 148193323Sed ret_flags, 149193323Sed time_rec); 150193323Sed 151193323Sed if (major_status != GSS_S_COMPLETE 152193323Sed && major_status != GSS_S_CONTINUE_NEEDED) { 153193323Sed if (allocated_ctx) 154193323Sed free(ctx); 155193323Sed _gss_buffer_zero(output_token); 156193323Sed _gss_mg_error(m, major_status, *minor_status); 157193323Sed } else { 158193323Sed *context_handle = (gss_ctx_id_t) ctx; 159193323Sed } 160193323Sed 161243830Sdim return (major_status); 162193323Sed} 163193323Sed