diff options
Diffstat (limited to 'crypto/heimdal/lib/gssapi/init_sec_context.c')
| -rw-r--r-- | crypto/heimdal/lib/gssapi/init_sec_context.c | 578 |
1 files changed, 0 insertions, 578 deletions
diff --git a/crypto/heimdal/lib/gssapi/init_sec_context.c b/crypto/heimdal/lib/gssapi/init_sec_context.c deleted file mode 100644 index 72286a3..0000000 --- a/crypto/heimdal/lib/gssapi/init_sec_context.c +++ /dev/null @@ -1,578 +0,0 @@ -/* - * 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("$Id: init_sec_context.c,v 1.36.2.1 2003/08/15 14:21:18 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; - krb5_data outbuf; - krb5_ccache ccache; - u_int32_t flags; - Authenticator *auth; - 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; - - 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; - } - - { - int32_t tmp; - - krb5_auth_con_getflags(gssapi_krb5_context, - (*context_handle)->auth_context, - &tmp); - tmp |= KRB5_AUTH_CONTEXT_DO_SEQUENCE; - krb5_auth_con_setflags(gssapi_krb5_context, - (*context_handle)->auth_context, - tmp); - } - - 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 = 0; - - kret = krb5_get_credentials (gssapi_krb5_context, - KRB5_TC_MATCH_KEYTYPE, - 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; - } - - 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) - ; /* XXX */ - if (req_flags & GSS_C_SEQUENCE_FLAG) - ; /* XXX */ - if (req_flags & GSS_C_ANON_FLAG) - ; /* XXX */ - flags |= GSS_C_CONF_FLAG; - flags |= GSS_C_INTEG_FLAG; - flags |= GSS_C_SEQUENCE_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; - -#if 1 - enctype = (*context_handle)->auth_context->keyblock->keytype; -#else - if ((*context_handle)->auth_context->enctype) - enctype = (*context_handle)->auth_context->enctype; - else { - kret = krb5_keytype_to_enctype(gssapi_krb5_context, - (*context_handle)->auth_context->keyblock->keytype, - &enctype); - if (kret) - return kret; - } -#endif - - kret = krb5_build_authenticator (gssapi_krb5_context, - (*context_handle)->auth_context, - enctype, - cred, - &cksum, - &auth, - &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"); - if (ret) - goto failure; - - krb5_data_free (&outbuf); - - if (flags & GSS_C_MUTUAL_FLAG) { - return GSS_S_CONTINUE_NEEDED; - } else { - 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); - 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); - free (*context_handle); - krb5_data_free (&outbuf); - *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; - krb5_error_code kret; - krb5_data indata; - krb5_ap_rep_enc_part *repl; - - output_token->length = 0; - output_token->value = NULL; - - if (actual_mech_type) - *actual_mech_type = GSS_KRB5_MECHANISM; - - ret = gssapi_krb5_decapsulate (minor_status, input_token, &indata, - "\x02\x00"); - if (ret) - /* XXX - Handle AP_ERROR */ - return ret; - - kret = krb5_rd_rep (gssapi_krb5_context, - (*context_handle)->auth_context, - &indata, - &repl); - if (kret) { - gssapi_krb5_set_error_string (); - *minor_status = kret; - return GSS_S_FAILURE; - } - krb5_free_ap_rep_enc_part (gssapi_krb5_context, - repl); - - (*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; - - return ret; -} - -/* - * 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 (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); -} |
