2 * GSS Proxy upcall module
4 * Copyright (C) 2012 Simo Sorce <simo@redhat.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #ifndef _LINUX_GSS_RPC_XDR_H
22 #define _LINUX_GSS_RPC_XDR_H
24 #include <linux/sunrpc/xdr.h>
25 #include <linux/sunrpc/clnt.h>
26 #include <linux/sunrpc/xprtsock.h>
28 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
29 # define RPCDBG_FACILITY RPCDBG_AUTH
32 #define LUCID_OPTION "exported_context_type"
33 #define LUCID_VALUE "linux_lucid_v1"
34 #define CREDS_OPTION "exported_creds_type"
35 #define CREDS_VALUE "linux_creds_v1"
37 typedef struct xdr_netobj gssx_buffer;
38 typedef struct xdr_netobj utf8string;
39 typedef struct xdr_netobj gssx_OID;
41 enum gssx_cred_usage {
52 struct gssx_option_array {
54 struct gssx_option *data;
61 utf8string major_status_string;
62 utf8string minor_status_string;
63 gssx_buffer server_ctx;
64 struct gssx_option_array options;
67 struct gssx_call_ctx {
69 gssx_buffer server_ctx;
70 struct gssx_option_array options;
73 struct gssx_name_attr {
76 struct gssx_option_array extensions;
79 struct gssx_name_attr_array {
81 struct gssx_name_attr *data;
85 gssx_buffer display_name;
87 typedef struct gssx_name gssx_name;
89 struct gssx_cred_element {
93 u64 initiator_time_rec;
94 u64 acceptor_time_rec;
95 struct gssx_option_array options;
98 struct gssx_cred_element_array {
100 struct gssx_cred_element *data;
104 gssx_name desired_name;
105 struct gssx_cred_element_array elements;
106 gssx_buffer cred_handle_reference;
111 gssx_buffer exported_context_token;
119 u32 locally_initiated;
121 struct gssx_option_array options;
125 u64 initiator_addrtype;
126 gssx_buffer initiator_address;
127 u64 acceptor_addrtype;
128 gssx_buffer acceptor_address;
129 gssx_buffer application_data;
133 /* This structure is not defined in the protocol.
134 * It is used in the kernel to carry around a big buffer
135 * as a set of pages */
136 struct gssp_in_token {
137 struct page **pages; /* Array of contiguous pages */
138 unsigned int page_base; /* Start of page data */
139 unsigned int page_len; /* Length of page data */
142 struct gssx_arg_accept_sec_context {
143 struct gssx_call_ctx call_ctx;
144 struct gssx_ctx *context_handle;
145 struct gssx_cred *cred_handle;
146 struct gssp_in_token input_token;
147 struct gssx_cb *input_cb;
149 struct gssx_option_array options;
154 struct gssx_res_accept_sec_context {
155 struct gssx_status status;
156 struct gssx_ctx *context_handle;
157 gssx_buffer *output_token;
158 /* struct gssx_cred *delegated_cred_handle; not used in kernel */
159 struct gssx_option_array options;
164 #define gssx_enc_indicate_mechs NULL
165 #define gssx_dec_indicate_mechs NULL
166 #define gssx_enc_get_call_context NULL
167 #define gssx_dec_get_call_context NULL
168 #define gssx_enc_import_and_canon_name NULL
169 #define gssx_dec_import_and_canon_name NULL
170 #define gssx_enc_export_cred NULL
171 #define gssx_dec_export_cred NULL
172 #define gssx_enc_import_cred NULL
173 #define gssx_dec_import_cred NULL
174 #define gssx_enc_acquire_cred NULL
175 #define gssx_dec_acquire_cred NULL
176 #define gssx_enc_store_cred NULL
177 #define gssx_dec_store_cred NULL
178 #define gssx_enc_init_sec_context NULL
179 #define gssx_dec_init_sec_context NULL
180 void gssx_enc_accept_sec_context(struct rpc_rqst *req,
181 struct xdr_stream *xdr,
182 struct gssx_arg_accept_sec_context *args);
183 int gssx_dec_accept_sec_context(struct rpc_rqst *rqstp,
184 struct xdr_stream *xdr,
185 struct gssx_res_accept_sec_context *res);
186 #define gssx_enc_release_handle NULL
187 #define gssx_dec_release_handle NULL
188 #define gssx_enc_get_mic NULL
189 #define gssx_dec_get_mic NULL
190 #define gssx_enc_verify NULL
191 #define gssx_dec_verify NULL
192 #define gssx_enc_wrap NULL
193 #define gssx_dec_wrap NULL
194 #define gssx_enc_unwrap NULL
195 #define gssx_dec_unwrap NULL
196 #define gssx_enc_wrap_size_limit NULL
197 #define gssx_dec_wrap_size_limit NULL
199 /* non implemented calls are set to 0 size */
200 #define GSSX_ARG_indicate_mechs_sz 0
201 #define GSSX_RES_indicate_mechs_sz 0
202 #define GSSX_ARG_get_call_context_sz 0
203 #define GSSX_RES_get_call_context_sz 0
204 #define GSSX_ARG_import_and_canon_name_sz 0
205 #define GSSX_RES_import_and_canon_name_sz 0
206 #define GSSX_ARG_export_cred_sz 0
207 #define GSSX_RES_export_cred_sz 0
208 #define GSSX_ARG_import_cred_sz 0
209 #define GSSX_RES_import_cred_sz 0
210 #define GSSX_ARG_acquire_cred_sz 0
211 #define GSSX_RES_acquire_cred_sz 0
212 #define GSSX_ARG_store_cred_sz 0
213 #define GSSX_RES_store_cred_sz 0
214 #define GSSX_ARG_init_sec_context_sz 0
215 #define GSSX_RES_init_sec_context_sz 0
217 #define GSSX_default_in_call_ctx_sz (4 + 4 + 4 + \
218 8 + sizeof(LUCID_OPTION) + sizeof(LUCID_VALUE) + \
219 8 + sizeof(CREDS_OPTION) + sizeof(CREDS_VALUE))
220 #define GSSX_default_in_ctx_hndl_sz (4 + 4+8 + 4 + 4 + 6*4 + 6*4 + 8 + 8 + \
222 #define GSSX_default_in_cred_sz 4 /* we send in no cred_handle */
223 #define GSSX_default_in_token_sz 4 /* does *not* include token data */
224 #define GSSX_default_in_cb_sz 4 /* we do not use channel bindings */
225 #define GSSX_ARG_accept_sec_context_sz (GSSX_default_in_call_ctx_sz + \
226 GSSX_default_in_ctx_hndl_sz + \
227 GSSX_default_in_cred_sz + \
228 GSSX_default_in_token_sz + \
229 GSSX_default_in_cb_sz + \
230 4 /* no deleg creds boolean */ + \
231 4) /* empty options */
233 /* somewhat arbitrary numbers but large enough (we ignore some of the data
234 * sent down, but it is part of the protocol so we need enough space to take
236 #define GSSX_default_status_sz 8 + 24 + 8 + 256 + 256 + 16 + 4
237 #define GSSX_max_output_handle_sz 128
238 #define GSSX_max_oid_sz 16
239 #define GSSX_max_princ_sz 256
240 #define GSSX_default_ctx_sz (GSSX_max_output_handle_sz + \
241 16 + 4 + GSSX_max_oid_sz + \
242 2 * GSSX_max_princ_sz + \
244 #define GSSX_max_output_token_sz 1024
245 /* grouplist not included; we allocate separate pages for that: */
246 #define GSSX_max_creds_sz (4 + 4 + 4 /* + NGROUPS_MAX*4 */)
247 #define GSSX_RES_accept_sec_context_sz (GSSX_default_status_sz + \
248 GSSX_default_ctx_sz + \
249 GSSX_max_output_token_sz + \
250 4 + GSSX_max_creds_sz)
252 #define GSSX_ARG_release_handle_sz 0
253 #define GSSX_RES_release_handle_sz 0
254 #define GSSX_ARG_get_mic_sz 0
255 #define GSSX_RES_get_mic_sz 0
256 #define GSSX_ARG_verify_sz 0
257 #define GSSX_RES_verify_sz 0
258 #define GSSX_ARG_wrap_sz 0
259 #define GSSX_RES_wrap_sz 0
260 #define GSSX_ARG_unwrap_sz 0
261 #define GSSX_RES_unwrap_sz 0
262 #define GSSX_ARG_wrap_size_limit_sz 0
263 #define GSSX_RES_wrap_size_limit_sz 0
267 #endif /* _LINUX_GSS_RPC_XDR_H */