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-rw-r--r--lib/gssapi/import_sec_context.c212
1 files changed, 212 insertions, 0 deletions
diff --git a/lib/gssapi/import_sec_context.c b/lib/gssapi/import_sec_context.c
new file mode 100644
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+++ b/lib/gssapi/import_sec_context.c
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+/*
+ * 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;
+}
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