/* * Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan * (Royal Institute of Technology, Stockholm, Sweden). * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "gssapi_locl.h" RCSID("$KTH: init_sec_context.c,v 1.57 2005/05/30 20:58:29 lha Exp $"); /* * copy the addresses from `input_chan_bindings' (if any) to * the auth context `ac' */ static OM_uint32 set_addresses (krb5_auth_context ac, const gss_channel_bindings_t input_chan_bindings) { /* Port numbers are expected to be in application_data.value, * initator's port first */ krb5_address initiator_addr, acceptor_addr; krb5_error_code kret; if (input_chan_bindings == GSS_C_NO_CHANNEL_BINDINGS || input_chan_bindings->application_data.length != 2 * sizeof(ac->local_port)) return 0; memset(&initiator_addr, 0, sizeof(initiator_addr)); memset(&acceptor_addr, 0, sizeof(acceptor_addr)); ac->local_port = *(int16_t *) input_chan_bindings->application_data.value; ac->remote_port = *((int16_t *) input_chan_bindings->application_data.value + 1); kret = gss_address_to_krb5addr(input_chan_bindings->acceptor_addrtype, &input_chan_bindings->acceptor_address, ac->remote_port, &acceptor_addr); if (kret) return kret; kret = gss_address_to_krb5addr(input_chan_bindings->initiator_addrtype, &input_chan_bindings->initiator_address, ac->local_port, &initiator_addr); if (kret) { krb5_free_address (gssapi_krb5_context, &acceptor_addr); return kret; } kret = krb5_auth_con_setaddrs(gssapi_krb5_context, ac, &initiator_addr, /* local address */ &acceptor_addr); /* remote address */ krb5_free_address (gssapi_krb5_context, &initiator_addr); krb5_free_address (gssapi_krb5_context, &acceptor_addr); #if 0 free(input_chan_bindings->application_data.value); input_chan_bindings->application_data.value = NULL; input_chan_bindings->application_data.length = 0; #endif return kret; } /* * handle delegated creds in init-sec-context */ static void do_delegation (krb5_auth_context ac, krb5_ccache ccache, krb5_creds *cred, const gss_name_t target_name, krb5_data *fwd_data, int *flags) { krb5_creds creds; krb5_kdc_flags fwd_flags; krb5_error_code kret; memset (&creds, 0, sizeof(creds)); krb5_data_zero (fwd_data); kret = krb5_cc_get_principal(gssapi_krb5_context, ccache, &creds.client); if (kret) goto out; kret = krb5_build_principal(gssapi_krb5_context, &creds.server, strlen(creds.client->realm), creds.client->realm, KRB5_TGS_NAME, creds.client->realm, NULL); if (kret) goto out; creds.times.endtime = 0; fwd_flags.i = 0; fwd_flags.b.forwarded = 1; fwd_flags.b.forwardable = 1; if ( /*target_name->name.name_type != KRB5_NT_SRV_HST ||*/ target_name->name.name_string.len < 2) goto out; kret = krb5_get_forwarded_creds(gssapi_krb5_context, ac, ccache, fwd_flags.i, target_name->name.name_string.val[1], &creds, fwd_data); out: if (kret) *flags &= ~GSS_C_DELEG_FLAG; else *flags |= GSS_C_DELEG_FLAG; if (creds.client) krb5_free_principal(gssapi_krb5_context, creds.client); if (creds.server) krb5_free_principal(gssapi_krb5_context, creds.server); } /* * first stage of init-sec-context */ static OM_uint32 init_auth (OM_uint32 * minor_status, const gss_cred_id_t initiator_cred_handle, gss_ctx_id_t * context_handle, const gss_name_t target_name, const gss_OID mech_type, OM_uint32 req_flags, OM_uint32 time_req, const gss_channel_bindings_t input_chan_bindings, const gss_buffer_t input_token, gss_OID * actual_mech_type, gss_buffer_t output_token, OM_uint32 * ret_flags, OM_uint32 * time_rec ) { OM_uint32 ret = GSS_S_FAILURE; krb5_error_code kret; krb5_flags ap_options; krb5_creds this_cred, *cred = NULL; krb5_data outbuf; krb5_ccache ccache = NULL; u_int32_t flags; krb5_data authenticator; Checksum cksum; krb5_enctype enctype; krb5_data fwd_data; OM_uint32 lifetime_rec; krb5_data_zero(&outbuf); krb5_data_zero(&fwd_data); *minor_status = 0; *context_handle = malloc(sizeof(**context_handle)); if (*context_handle == NULL) { *minor_status = ENOMEM; return GSS_S_FAILURE; } (*context_handle)->auth_context = NULL; (*context_handle)->source = NULL; (*context_handle)->target = NULL; (*context_handle)->flags = 0; (*context_handle)->more_flags = 0; (*context_handle)->ticket = NULL; (*context_handle)->lifetime = GSS_C_INDEFINITE; (*context_handle)->order = NULL; HEIMDAL_MUTEX_init(&(*context_handle)->ctx_id_mutex); kret = krb5_auth_con_init (gssapi_krb5_context, &(*context_handle)->auth_context); if (kret) { gssapi_krb5_set_error_string (); *minor_status = kret; ret = GSS_S_FAILURE; goto failure; } kret = set_addresses ((*context_handle)->auth_context, input_chan_bindings); if (kret) { *minor_status = kret; ret = GSS_S_BAD_BINDINGS; goto failure; } krb5_auth_con_addflags(gssapi_krb5_context, (*context_handle)->auth_context, KRB5_AUTH_CONTEXT_DO_SEQUENCE | KRB5_AUTH_CONTEXT_CLEAR_FORWARDED_CRED, NULL); if (actual_mech_type) *actual_mech_type = GSS_KRB5_MECHANISM; if (initiator_cred_handle == GSS_C_NO_CREDENTIAL) { kret = krb5_cc_default (gssapi_krb5_context, &ccache); if (kret) { gssapi_krb5_set_error_string (); *minor_status = kret; ret = GSS_S_FAILURE; goto failure; } } else ccache = initiator_cred_handle->ccache; kret = krb5_cc_get_principal (gssapi_krb5_context, ccache, &(*context_handle)->source); if (kret) { gssapi_krb5_set_error_string (); *minor_status = kret; ret = GSS_S_FAILURE; goto failure; } kret = krb5_copy_principal (gssapi_krb5_context, target_name, &(*context_handle)->target); if (kret) { gssapi_krb5_set_error_string (); *minor_status = kret; ret = GSS_S_FAILURE; goto failure; } ret = _gss_DES3_get_mic_compat(minor_status, *context_handle); if (ret) goto failure; memset(&this_cred, 0, sizeof(this_cred)); this_cred.client = (*context_handle)->source; this_cred.server = (*context_handle)->target; if (time_req && time_req != GSS_C_INDEFINITE) { krb5_timestamp ts; krb5_timeofday (gssapi_krb5_context, &ts); this_cred.times.endtime = ts + time_req; } else this_cred.times.endtime = 0; this_cred.session.keytype = KEYTYPE_NULL; kret = krb5_get_credentials (gssapi_krb5_context, 0, ccache, &this_cred, &cred); if (kret) { gssapi_krb5_set_error_string (); *minor_status = kret; ret = GSS_S_FAILURE; goto failure; } (*context_handle)->lifetime = cred->times.endtime; ret = gssapi_lifetime_left(minor_status, (*context_handle)->lifetime, &lifetime_rec); if (ret) { goto failure; } if (lifetime_rec == 0) { *minor_status = 0; ret = GSS_S_CONTEXT_EXPIRED; goto failure; } krb5_auth_con_setkey(gssapi_krb5_context, (*context_handle)->auth_context, &cred->session); kret = krb5_auth_con_generatelocalsubkey(gssapi_krb5_context, (*context_handle)->auth_context, &cred->session); if(kret) { gssapi_krb5_set_error_string (); *minor_status = kret; ret = GSS_S_FAILURE; goto failure; } /* * If the realm policy approves a delegation, lets check local * policy if the credentials should be delegated, defafult to * false. */ if (cred->flags.b.ok_as_delegate) { krb5_boolean delegate = FALSE; _gss_check_compat(NULL, target_name, "ok-as-delegate", &delegate, TRUE); krb5_appdefault_boolean(gssapi_krb5_context, "gssapi", target_name->realm, "ok-as-delegate", delegate, &delegate); if (delegate) req_flags |= GSS_C_DELEG_FLAG; } flags = 0; ap_options = 0; if (req_flags & GSS_C_DELEG_FLAG) do_delegation ((*context_handle)->auth_context, ccache, cred, target_name, &fwd_data, &flags); if (req_flags & GSS_C_MUTUAL_FLAG) { flags |= GSS_C_MUTUAL_FLAG; ap_options |= AP_OPTS_MUTUAL_REQUIRED; } if (req_flags & GSS_C_REPLAY_FLAG) flags |= GSS_C_REPLAY_FLAG; if (req_flags & GSS_C_SEQUENCE_FLAG) flags |= GSS_C_SEQUENCE_FLAG; if (req_flags & GSS_C_ANON_FLAG) ; /* XXX */ flags |= GSS_C_CONF_FLAG; flags |= GSS_C_INTEG_FLAG; flags |= GSS_C_TRANS_FLAG; if (ret_flags) *ret_flags = flags; (*context_handle)->flags = flags; (*context_handle)->more_flags |= LOCAL; ret = gssapi_krb5_create_8003_checksum (minor_status, input_chan_bindings, flags, &fwd_data, &cksum); krb5_data_free (&fwd_data); if (ret) goto failure; enctype = (*context_handle)->auth_context->keyblock->keytype; kret = krb5_build_authenticator (gssapi_krb5_context, (*context_handle)->auth_context, enctype, cred, &cksum, NULL, &authenticator, KRB5_KU_AP_REQ_AUTH); if (kret) { gssapi_krb5_set_error_string (); *minor_status = kret; ret = GSS_S_FAILURE; goto failure; } kret = krb5_build_ap_req (gssapi_krb5_context, enctype, cred, ap_options, authenticator, &outbuf); if (kret) { gssapi_krb5_set_error_string (); *minor_status = kret; ret = GSS_S_FAILURE; goto failure; } ret = gssapi_krb5_encapsulate (minor_status, &outbuf, output_token, "\x01\x00", GSS_KRB5_MECHANISM); if (ret) goto failure; krb5_data_free (&outbuf); krb5_free_creds(gssapi_krb5_context, cred); free_Checksum(&cksum); if (initiator_cred_handle == GSS_C_NO_CREDENTIAL) krb5_cc_close(gssapi_krb5_context, ccache); if (flags & GSS_C_MUTUAL_FLAG) { return GSS_S_CONTINUE_NEEDED; } else { int32_t seq_number; int is_cfx = 0; krb5_auth_getremoteseqnumber (gssapi_krb5_context, (*context_handle)->auth_context, &seq_number); gsskrb5_is_cfx(*context_handle, &is_cfx); ret = _gssapi_msg_order_create(minor_status, &(*context_handle)->order, _gssapi_msg_order_f(flags), seq_number, 0, is_cfx); if (ret) goto failure; if (time_rec) *time_rec = lifetime_rec; (*context_handle)->more_flags |= OPEN; return GSS_S_COMPLETE; } failure: krb5_auth_con_free (gssapi_krb5_context, (*context_handle)->auth_context); krb5_data_free (&outbuf); if(cred) krb5_free_creds(gssapi_krb5_context, cred); if (ccache && initiator_cred_handle == GSS_C_NO_CREDENTIAL) krb5_cc_close(gssapi_krb5_context, ccache); if((*context_handle)->source) krb5_free_principal (gssapi_krb5_context, (*context_handle)->source); if((*context_handle)->target) krb5_free_principal (gssapi_krb5_context, (*context_handle)->target); if((*context_handle)->order) _gssapi_msg_order_destroy(&(*context_handle)->order); HEIMDAL_MUTEX_destroy(&(*context_handle)->ctx_id_mutex); free (*context_handle); *context_handle = GSS_C_NO_CONTEXT; return ret; } static OM_uint32 repl_mutual (OM_uint32 * minor_status, const gss_cred_id_t initiator_cred_handle, gss_ctx_id_t * context_handle, const gss_name_t target_name, const gss_OID mech_type, OM_uint32 req_flags, OM_uint32 time_req, const gss_channel_bindings_t input_chan_bindings, const gss_buffer_t input_token, gss_OID * actual_mech_type, gss_buffer_t output_token, OM_uint32 * ret_flags, OM_uint32 * time_rec ) { OM_uint32 ret, seq_number; krb5_error_code kret; krb5_data indata; krb5_ap_rep_enc_part *repl; int is_cfx = 0; output_token->length = 0; output_token->value = NULL; HEIMDAL_MUTEX_lock(&(*context_handle)->ctx_id_mutex); if (actual_mech_type) *actual_mech_type = GSS_KRB5_MECHANISM; ret = gssapi_krb5_decapsulate (minor_status, input_token, &indata, "\x02\x00", GSS_KRB5_MECHANISM); if (ret) { HEIMDAL_MUTEX_unlock(&(*context_handle)->ctx_id_mutex); /* XXX - Handle AP_ERROR */ return ret; } kret = krb5_rd_rep (gssapi_krb5_context, (*context_handle)->auth_context, &indata, &repl); if (kret) { HEIMDAL_MUTEX_unlock(&(*context_handle)->ctx_id_mutex); gssapi_krb5_set_error_string (); *minor_status = kret; return GSS_S_FAILURE; } krb5_free_ap_rep_enc_part (gssapi_krb5_context, repl); krb5_auth_getremoteseqnumber (gssapi_krb5_context, (*context_handle)->auth_context, &seq_number); gsskrb5_is_cfx(*context_handle, &is_cfx); ret = _gssapi_msg_order_create(minor_status, &(*context_handle)->order, _gssapi_msg_order_f((*context_handle)->flags), seq_number, 0, is_cfx); if (ret) { HEIMDAL_MUTEX_unlock(&(*context_handle)->ctx_id_mutex); return ret; } (*context_handle)->more_flags |= OPEN; *minor_status = 0; if (time_rec) { ret = gssapi_lifetime_left(minor_status, (*context_handle)->lifetime, time_rec); } else { ret = GSS_S_COMPLETE; } if (ret_flags) *ret_flags = (*context_handle)->flags; HEIMDAL_MUTEX_unlock(&(*context_handle)->ctx_id_mutex); return ret; } static OM_uint32 gsskrb5_init_sec_context (OM_uint32 * minor_status, const gss_cred_id_t initiator_cred_handle, gss_ctx_id_t * context_handle, const gss_name_t target_name, const gss_OID mech_type, OM_uint32 req_flags, OM_uint32 time_req, const gss_channel_bindings_t input_chan_bindings, const gss_buffer_t input_token, gss_OID * actual_mech_type, gss_buffer_t output_token, OM_uint32 * ret_flags, OM_uint32 * time_rec ) { if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) return init_auth (minor_status, initiator_cred_handle, context_handle, target_name, mech_type, req_flags, time_req, input_chan_bindings, input_token, actual_mech_type, output_token, ret_flags, time_rec); else return repl_mutual(minor_status, initiator_cred_handle, context_handle, target_name, mech_type, req_flags, time_req, input_chan_bindings, input_token, actual_mech_type, output_token, ret_flags, time_rec); } static OM_uint32 spnego_reply (OM_uint32 * minor_status, const gss_cred_id_t initiator_cred_handle, gss_ctx_id_t * context_handle, const gss_name_t target_name, const gss_OID mech_type, OM_uint32 req_flags, OM_uint32 time_req, const gss_channel_bindings_t input_chan_bindings, const gss_buffer_t input_token, gss_OID * actual_mech_type, gss_buffer_t output_token, OM_uint32 * ret_flags, OM_uint32 * time_rec ) { OM_uint32 ret; krb5_data indata; NegTokenTarg targ; u_char oidbuf[17]; size_t oidlen; gss_buffer_desc sub_token; ssize_t mech_len; const u_char *p; size_t len, taglen; krb5_boolean require_mic; output_token->length = 0; output_token->value = NULL; /* * SPNEGO doesn't include gss wrapping on SubsequentContextToken * like the Kerberos 5 mech does. But lets check for it anyway. */ mech_len = gssapi_krb5_get_mech (input_token->value, input_token->length, &p); if (mech_len < 0) { indata.data = input_token->value; indata.length = input_token->length; } else if (mech_len == GSS_KRB5_MECHANISM->length && memcmp(GSS_KRB5_MECHANISM->elements, p, mech_len) == 0) return gsskrb5_init_sec_context (minor_status, initiator_cred_handle, context_handle, target_name, GSS_KRB5_MECHANISM, req_flags, time_req, input_chan_bindings, input_token, actual_mech_type, output_token, ret_flags, time_rec); else if (mech_len == GSS_SPNEGO_MECHANISM->length && memcmp(GSS_SPNEGO_MECHANISM->elements, p, mech_len) == 0){ ret = _gssapi_decapsulate (minor_status, input_token, &indata, GSS_SPNEGO_MECHANISM); if (ret) return ret; } else return GSS_S_BAD_MECH; ret = der_match_tag_and_length((const char *)indata.data, indata.length, ASN1_C_CONTEXT, CONS, 1, &len, &taglen); if (ret) return ret; if(len > indata.length - taglen) return ASN1_OVERRUN; ret = decode_NegTokenTarg((const char *)indata.data + taglen, len, &targ, NULL); if (ret) { *minor_status = ENOMEM; return GSS_S_FAILURE; } if (targ.negResult == NULL || *(targ.negResult) == reject || targ.supportedMech == NULL) { free_NegTokenTarg(&targ); return GSS_S_BAD_MECH; } ret = der_put_oid(oidbuf + sizeof(oidbuf) - 1, sizeof(oidbuf), targ.supportedMech, &oidlen); if (ret || oidlen != GSS_KRB5_MECHANISM->length || memcmp(oidbuf + sizeof(oidbuf) - oidlen, GSS_KRB5_MECHANISM->elements, oidlen) != 0) { free_NegTokenTarg(&targ); return GSS_S_BAD_MECH; } if (targ.responseToken != NULL) { sub_token.length = targ.responseToken->length; sub_token.value = targ.responseToken->data; } else { sub_token.length = 0; sub_token.value = NULL; } ret = gsskrb5_init_sec_context(minor_status, initiator_cred_handle, context_handle, target_name, GSS_KRB5_MECHANISM, req_flags, time_req, input_chan_bindings, &sub_token, actual_mech_type, output_token, ret_flags, time_rec); if (ret) { free_NegTokenTarg(&targ); return ret; } /* * Verify the mechListMIC if CFX was used; or if local policy * dictated so. */ ret = _gss_spnego_require_mechlist_mic(minor_status, *context_handle, &require_mic); if (ret) { free_NegTokenTarg(&targ); return ret; } if (require_mic) { MechTypeList mechlist; MechType m0; size_t buf_len; gss_buffer_desc mic_buf, mech_buf; if (targ.mechListMIC == NULL) { free_NegTokenTarg(&targ); *minor_status = 0; return GSS_S_BAD_MIC; } mechlist.len = 1; mechlist.val = &m0; ret = der_get_oid(GSS_KRB5_MECHANISM->elements, GSS_KRB5_MECHANISM->length, &m0, NULL); if (ret) { free_NegTokenTarg(&targ); *minor_status = ENOMEM; return GSS_S_FAILURE; } ASN1_MALLOC_ENCODE(MechTypeList, mech_buf.value, mech_buf.length, &mechlist, &buf_len, ret); if (ret) { free_NegTokenTarg(&targ); free_oid(&m0); *minor_status = ENOMEM; return GSS_S_FAILURE; } if (mech_buf.length != buf_len) abort(); mic_buf.length = targ.mechListMIC->length; mic_buf.value = targ.mechListMIC->data; ret = gss_verify_mic(minor_status, *context_handle, &mech_buf, &mic_buf, NULL); free(mech_buf.value); free_oid(&m0); } free_NegTokenTarg(&targ); return ret; } static OM_uint32 spnego_initial (OM_uint32 * minor_status, const gss_cred_id_t initiator_cred_handle, gss_ctx_id_t * context_handle, const gss_name_t target_name, const gss_OID mech_type, OM_uint32 req_flags, OM_uint32 time_req, const gss_channel_bindings_t input_chan_bindings, const gss_buffer_t input_token, gss_OID * actual_mech_type, gss_buffer_t output_token, OM_uint32 * ret_flags, OM_uint32 * time_rec ) { NegTokenInit ni; int ret; OM_uint32 sub, minor; gss_buffer_desc mech_token; u_char *buf; size_t buf_size, buf_len; krb5_data data; #if 1 size_t ni_len; #endif memset (&ni, 0, sizeof(ni)); ALLOC(ni.mechTypes, 1); if (ni.mechTypes == NULL) { *minor_status = ENOMEM; return GSS_S_FAILURE; } ALLOC_SEQ(ni.mechTypes, 1); if (ni.mechTypes->val == NULL) { free_NegTokenInit(&ni); *minor_status = ENOMEM; return GSS_S_FAILURE; } ret = der_get_oid(GSS_KRB5_MECHANISM->elements, GSS_KRB5_MECHANISM->length, &ni.mechTypes->val[0], NULL); if (ret) { free_NegTokenInit(&ni); *minor_status = ENOMEM; return GSS_S_FAILURE; } #if 0 ALLOC(ni.reqFlags, 1); if (ni.reqFlags == NULL) { free_NegTokenInit(&ni); *minor_status = ENOMEM; return GSS_S_FAILURE; } ni.reqFlags->delegFlag = req_flags & GSS_C_DELEG_FLAG; ni.reqFlags->mutualFlag = req_flags & GSS_C_MUTUAL_FLAG; ni.reqFlags->replayFlag = req_flags & GSS_C_REPLAY_FLAG; ni.reqFlags->sequenceFlag = req_flags & GSS_C_SEQUENCE_FLAG; ni.reqFlags->anonFlag = req_flags & GSS_C_ANON_FLAG; ni.reqFlags->confFlag = req_flags & GSS_C_CONF_FLAG; ni.reqFlags->integFlag = req_flags & GSS_C_INTEG_FLAG; #else ni.reqFlags = NULL; #endif sub = gsskrb5_init_sec_context(&minor, initiator_cred_handle, context_handle, target_name, GSS_KRB5_MECHANISM, req_flags, time_req, input_chan_bindings, GSS_C_NO_BUFFER, actual_mech_type, &mech_token, ret_flags, time_rec); if (GSS_ERROR(sub)) { free_NegTokenInit(&ni); return sub; } if (mech_token.length != 0) { ALLOC(ni.mechToken, 1); if (ni.mechToken == NULL) { free_NegTokenInit(&ni); gss_release_buffer(&minor, &mech_token); *minor_status = ENOMEM; return GSS_S_FAILURE; } ni.mechToken->length = mech_token.length; ni.mechToken->data = malloc(mech_token.length); if (ni.mechToken->data == NULL && mech_token.length != 0) { free_NegTokenInit(&ni); gss_release_buffer(&minor, &mech_token); *minor_status = ENOMEM; return GSS_S_FAILURE; } memcpy(ni.mechToken->data, mech_token.value, mech_token.length); gss_release_buffer(&minor, &mech_token); } else ni.mechToken = NULL; /* XXX ignore mech list mic for now */ ni.mechListMIC = NULL; #if 0 { int ret; NegotiationToken nt; nt.element = choice_NegotiationToken_negTokenInit; nt.u.negTokenInit = ni; ASN1_MALLOC_ENCODE(NegotiationToken, buf, buf_size, &nt, &buf_len, ret); if (buf_size != buf_len) abort(); } #else ni_len = length_NegTokenInit(&ni); buf_size = 1 + length_len(ni_len) + ni_len; buf = malloc(buf_size); if (buf == NULL) { free_NegTokenInit(&ni); *minor_status = ENOMEM; return GSS_S_FAILURE; } ret = encode_NegTokenInit(buf + buf_size - 1, ni_len, &ni, &buf_len); if (ret == 0 && ni_len != buf_len) abort(); if (ret == 0) { size_t tmp; ret = der_put_length_and_tag(buf + buf_size - buf_len - 1, buf_size - buf_len, buf_len, ASN1_C_CONTEXT, CONS, 0, &tmp); if (ret == 0 && tmp + buf_len != buf_size) abort(); } if (ret) { *minor_status = ret; free(buf); free_NegTokenInit(&ni); return GSS_S_FAILURE; } #endif data.data = buf; data.length = buf_size; free_NegTokenInit(&ni); if (ret) return ret; sub = _gssapi_encapsulate(minor_status, &data, output_token, GSS_SPNEGO_MECHANISM); free (buf); if (sub) return sub; return GSS_S_CONTINUE_NEEDED; } static OM_uint32 spnego_init_sec_context (OM_uint32 * minor_status, const gss_cred_id_t initiator_cred_handle, gss_ctx_id_t * context_handle, const gss_name_t target_name, const gss_OID mech_type, OM_uint32 req_flags, OM_uint32 time_req, const gss_channel_bindings_t input_chan_bindings, const gss_buffer_t input_token, gss_OID * actual_mech_type, gss_buffer_t output_token, OM_uint32 * ret_flags, OM_uint32 * time_rec ) { if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) return spnego_initial (minor_status, initiator_cred_handle, context_handle, target_name, mech_type, req_flags, time_req, input_chan_bindings, input_token, actual_mech_type, output_token, ret_flags, time_rec); else return spnego_reply (minor_status, initiator_cred_handle, context_handle, target_name, mech_type, req_flags, time_req, input_chan_bindings, input_token, actual_mech_type, output_token, ret_flags, time_rec); } /* * gss_init_sec_context */ OM_uint32 gss_init_sec_context (OM_uint32 * minor_status, const gss_cred_id_t initiator_cred_handle, gss_ctx_id_t * context_handle, const gss_name_t target_name, const gss_OID mech_type, OM_uint32 req_flags, OM_uint32 time_req, const gss_channel_bindings_t input_chan_bindings, const gss_buffer_t input_token, gss_OID * actual_mech_type, gss_buffer_t output_token, OM_uint32 * ret_flags, OM_uint32 * time_rec ) { GSSAPI_KRB5_INIT (); output_token->length = 0; output_token->value = NULL; if (ret_flags) *ret_flags = 0; if (time_rec) *time_rec = 0; if (target_name == GSS_C_NO_NAME) { if (actual_mech_type) *actual_mech_type = GSS_C_NO_OID; *minor_status = 0; return GSS_S_BAD_NAME; } if (mech_type == GSS_C_NO_OID || gss_oid_equal(mech_type, GSS_KRB5_MECHANISM)) return gsskrb5_init_sec_context(minor_status, initiator_cred_handle, context_handle, target_name, mech_type, req_flags, time_req, input_chan_bindings, input_token, actual_mech_type, output_token, ret_flags, time_rec); else if (gss_oid_equal(mech_type, GSS_SPNEGO_MECHANISM)) return spnego_init_sec_context (minor_status, initiator_cred_handle, context_handle, target_name, mech_type, req_flags, time_req, input_chan_bindings, input_token, actual_mech_type, output_token, ret_flags, time_rec); else return GSS_S_BAD_MECH; }