/* * Copyright (c) 1999 - 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: import_sec_context.c,v 1.7 2003/03/16 18:01:32 lha Exp $"); OM_uint32 gss_import_sec_context ( OM_uint32 * minor_status, const gss_buffer_t interprocess_token, gss_ctx_id_t * context_handle ) { OM_uint32 ret = GSS_S_FAILURE; krb5_error_code kret; krb5_storage *sp; krb5_auth_context ac; krb5_address local, remote; krb5_address *localp, *remotep; krb5_data data; gss_buffer_desc buffer; krb5_keyblock keyblock; int32_t tmp; int32_t flags; OM_uint32 minor; GSSAPI_KRB5_INIT (); localp = remotep = NULL; sp = krb5_storage_from_mem (interprocess_token->value, interprocess_token->length); if (sp == NULL) { *minor_status = ENOMEM; return GSS_S_FAILURE; } *context_handle = malloc(sizeof(**context_handle)); if (*context_handle == NULL) { *minor_status = ENOMEM; krb5_storage_free (sp); return GSS_S_FAILURE; } memset (*context_handle, 0, sizeof(**context_handle)); 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; } /* flags */ *minor_status = 0; if (krb5_ret_int32 (sp, &flags) != 0) goto failure; /* retrieve the auth context */ ac = (*context_handle)->auth_context; krb5_ret_int32 (sp, &ac->flags); if (flags & SC_LOCAL_ADDRESS) { if (krb5_ret_address (sp, localp = &local) != 0) goto failure; } if (flags & SC_REMOTE_ADDRESS) { if (krb5_ret_address (sp, remotep = &remote) != 0) goto failure; } krb5_auth_con_setaddrs (gssapi_krb5_context, ac, localp, remotep); if (localp) krb5_free_address (gssapi_krb5_context, localp); if (remotep) krb5_free_address (gssapi_krb5_context, remotep); localp = remotep = NULL; if (krb5_ret_int16 (sp, &ac->local_port) != 0) goto failure; if (krb5_ret_int16 (sp, &ac->remote_port) != 0) goto failure; if (flags & SC_KEYBLOCK) { if (krb5_ret_keyblock (sp, &keyblock) != 0) goto failure; krb5_auth_con_setkey (gssapi_krb5_context, ac, &keyblock); krb5_free_keyblock_contents (gssapi_krb5_context, &keyblock); } if (flags & SC_LOCAL_SUBKEY) { if (krb5_ret_keyblock (sp, &keyblock) != 0) goto failure; krb5_auth_con_setlocalsubkey (gssapi_krb5_context, ac, &keyblock); krb5_free_keyblock_contents (gssapi_krb5_context, &keyblock); } if (flags & SC_REMOTE_SUBKEY) { if (krb5_ret_keyblock (sp, &keyblock) != 0) goto failure; krb5_auth_con_setremotesubkey (gssapi_krb5_context, ac, &keyblock); krb5_free_keyblock_contents (gssapi_krb5_context, &keyblock); } if (krb5_ret_int32 (sp, &ac->local_seqnumber)) goto failure; if (krb5_ret_int32 (sp, &ac->remote_seqnumber)) goto failure; if (krb5_ret_int32 (sp, &tmp) != 0) goto failure; ac->keytype = tmp; if (krb5_ret_int32 (sp, &tmp) != 0) goto failure; ac->cksumtype = tmp; /* names */ if (krb5_ret_data (sp, &data)) goto failure; buffer.value = data.data; buffer.length = data.length; ret = gss_import_name (minor_status, &buffer, GSS_C_NT_EXPORT_NAME, &(*context_handle)->source); if (ret) { ret = gss_import_name (minor_status, &buffer, GSS_C_NO_OID, &(*context_handle)->source); if (ret) { krb5_data_free (&data); goto failure; } } krb5_data_free (&data); if (krb5_ret_data (sp, &data) != 0) goto failure; buffer.value = data.data; buffer.length = data.length; ret = gss_import_name (minor_status, &buffer, GSS_C_NT_EXPORT_NAME, &(*context_handle)->target); if (ret) { ret = gss_import_name (minor_status, &buffer, GSS_C_NO_OID, &(*context_handle)->target); if (ret) { krb5_data_free (&data); goto failure; } } krb5_data_free (&data); if (krb5_ret_int32 (sp, &tmp)) goto failure; (*context_handle)->flags = tmp; if (krb5_ret_int32 (sp, &tmp)) goto failure; (*context_handle)->more_flags = tmp; if (krb5_ret_int32 (sp, &tmp) == 0) (*context_handle)->lifetime = tmp; else (*context_handle)->lifetime = GSS_C_INDEFINITE; return GSS_S_COMPLETE; failure: krb5_auth_con_free (gssapi_krb5_context, (*context_handle)->auth_context); if ((*context_handle)->source != NULL) gss_release_name(&minor, &(*context_handle)->source); if ((*context_handle)->target != NULL) gss_release_name(&minor, &(*context_handle)->target); if (localp) krb5_free_address (gssapi_krb5_context, localp); if (remotep) krb5_free_address (gssapi_krb5_context, remotep); free (*context_handle); *context_handle = GSS_C_NO_CONTEXT; return ret; }