+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (C) 2013, Trustees of Indiana University
+ * Author: Andrew Korty <ajk@iu.edu>
+ */
+
+#define DEBUG_SUBSYSTEM S_SEC
+#ifdef __KERNEL__
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/crypto.h>
+#include <linux/mutex.h>
+#else
+#include <liblustre.h>
+#endif
+
+#include <obd.h>
+#include <obd_class.h>
+#include <obd_support.h>
+
+#include "gss_err.h"
+#include "gss_internal.h"
+#include "gss_api.h"
+#include "gss_asn1.h"
+
+struct null_ctx {
+};
+
+static
+__u32 gss_import_sec_context_null(rawobj_t *inbuf, struct gss_ctx *gss_context)
+{
+ struct null_ctx *null_context;
+
+ if (inbuf == NULL || inbuf->data == NULL)
+ return GSS_S_FAILURE;
+
+ OBD_ALLOC_PTR(null_context);
+ if (null_context == NULL)
+ return GSS_S_FAILURE;
+
+ gss_context->internal_ctx_id = null_context;
+ CDEBUG(D_SEC, "succesfully imported null context\n");
+
+ return GSS_S_COMPLETE;
+}
+
+static
+__u32 gss_copy_reverse_context_null(struct gss_ctx *gss_context_old,
+ struct gss_ctx *gss_context_new)
+{
+ struct null_ctx *null_context_old;
+ struct null_ctx *null_context_new;
+
+ OBD_ALLOC_PTR(null_context_new);
+ if (null_context_new == NULL)
+ return GSS_S_FAILURE;
+
+ null_context_old = gss_context_old->internal_ctx_id;
+ memcpy(null_context_new, null_context_old, sizeof *null_context_new);
+ gss_context_new->internal_ctx_id = null_context_new;
+ CDEBUG(D_SEC, "succesfully copied reverse null context\n");
+
+ return GSS_S_COMPLETE;
+}
+
+static
+__u32 gss_inquire_context_null(struct gss_ctx *gss_context,
+ unsigned long *endtime)
+{
+ *endtime = 0;
+ return GSS_S_COMPLETE;
+}
+
+static
+__u32 gss_wrap_null(struct gss_ctx *gss_context, rawobj_t *gss_header,
+ rawobj_t *message, int message_buffer_length,
+ rawobj_t *token)
+{
+ return GSS_S_COMPLETE;
+}
+
+static
+__u32 gss_unwrap_null(struct gss_ctx *gss_context, rawobj_t *gss_header,
+ rawobj_t *token, rawobj_t *message)
+{
+ return GSS_S_COMPLETE;
+}
+
+static
+__u32 gss_prep_bulk_null(struct gss_ctx *gss_context,
+ struct ptlrpc_bulk_desc *desc)
+{
+ return GSS_S_COMPLETE;
+}
+
+static
+__u32 gss_wrap_bulk_null(struct gss_ctx *gss_context,
+ struct ptlrpc_bulk_desc *desc, rawobj_t *token,
+ int adj_nob)
+{
+ return GSS_S_COMPLETE;
+}
+
+static
+__u32 gss_unwrap_bulk_null(struct gss_ctx *gss_context,
+ struct ptlrpc_bulk_desc *desc,
+ rawobj_t *token, int adj_nob)
+{
+ return GSS_S_COMPLETE;
+}
+
+static
+void gss_delete_sec_context_null(void *internal_context)
+{
+ struct null_ctx *null_context = internal_context;
+
+ OBD_FREE_PTR(null_context);
+}
+
+int gss_display_null(struct gss_ctx *gss_context, char *buf, int bufsize)
+{
+ return snprintf(buf, bufsize, "null");
+}
+
+static struct gss_api_ops gss_null_ops = {
+ .gss_import_sec_context = gss_import_sec_context_null,
+ .gss_copy_reverse_context = gss_copy_reverse_context_null,
+ .gss_inquire_context = gss_inquire_context_null,
+ .gss_get_mic = NULL,
+ .gss_verify_mic = NULL,
+ .gss_wrap = gss_wrap_null,
+ .gss_unwrap = gss_unwrap_null,
+ .gss_prep_bulk = gss_prep_bulk_null,
+ .gss_wrap_bulk = gss_wrap_bulk_null,
+ .gss_unwrap_bulk = gss_unwrap_bulk_null,
+ .gss_delete_sec_context = gss_delete_sec_context_null,
+ .gss_display = gss_display_null,
+};
+
+static struct subflavor_desc gss_null_sfs[] = {
+ {
+ .sf_subflavor = SPTLRPC_SUBFLVR_GSSNULL,
+ .sf_qop = 0,
+ .sf_service = SPTLRPC_SVC_NULL,
+ .sf_name = "gssnull"
+ },
+};
+
+/*
+ * currently we leave module owner NULL
+ */
+static struct gss_api_mech gss_null_mech = {
+ .gm_owner = NULL, /*THIS_MODULE, */
+ .gm_name = "gssnull",
+ .gm_oid = (rawobj_t) {
+ 12,
+ "\053\006\001\004\001\311\146\215\126\001\000\000"
+ },
+ .gm_ops = &gss_null_ops,
+ .gm_sf_num = 1,
+ .gm_sfs = gss_null_sfs,
+};
+
+int __init init_null_module(void)
+{
+ int status;
+
+ status = lgss_mech_register(&gss_null_mech);
+ if (status)
+ CERROR("Failed to register null gss mechanism!\n");
+
+ return status;
+}
+
+void cleanup_null_module(void)
+{
+ lgss_mech_unregister(&gss_null_mech);
+}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff