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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * linux/net/sunrpc/gss_rpc_upcall.c
4 *
5 * Copyright (C) 2012 Simo Sorce <simo@redhat.com>
6 */
7
8#include <linux/types.h>
9#include <linux/un.h>
10
11#include <linux/sunrpc/svcauth.h>
12#include "gss_rpc_upcall.h"
13
14#define GSSPROXY_SOCK_PATHNAME "/var/run/gssproxy.sock"
15
16#define GSSPROXY_PROGRAM (400112u)
17#define GSSPROXY_VERS_1 (1u)
18
19/*
20 * Encoding/Decoding functions
21 */
22
23enum {
24 GSSX_NULL = 0, /* Unused */
25 GSSX_INDICATE_MECHS = 1,
26 GSSX_GET_CALL_CONTEXT = 2,
27 GSSX_IMPORT_AND_CANON_NAME = 3,
28 GSSX_EXPORT_CRED = 4,
29 GSSX_IMPORT_CRED = 5,
30 GSSX_ACQUIRE_CRED = 6,
31 GSSX_STORE_CRED = 7,
32 GSSX_INIT_SEC_CONTEXT = 8,
33 GSSX_ACCEPT_SEC_CONTEXT = 9,
34 GSSX_RELEASE_HANDLE = 10,
35 GSSX_GET_MIC = 11,
36 GSSX_VERIFY = 12,
37 GSSX_WRAP = 13,
38 GSSX_UNWRAP = 14,
39 GSSX_WRAP_SIZE_LIMIT = 15,
40};
41
42#define PROC(proc, name) \
43[GSSX_##proc] = { \
44 .p_proc = GSSX_##proc, \
45 .p_encode = gssx_enc_##name, \
46 .p_decode = gssx_dec_##name, \
47 .p_arglen = GSSX_ARG_##name##_sz, \
48 .p_replen = GSSX_RES_##name##_sz, \
49 .p_statidx = GSSX_##proc, \
50 .p_name = #proc, \
51}
52
53static const struct rpc_procinfo gssp_procedures[] = {
54 PROC(INDICATE_MECHS, indicate_mechs),
55 PROC(GET_CALL_CONTEXT, get_call_context),
56 PROC(IMPORT_AND_CANON_NAME, import_and_canon_name),
57 PROC(EXPORT_CRED, export_cred),
58 PROC(IMPORT_CRED, import_cred),
59 PROC(ACQUIRE_CRED, acquire_cred),
60 PROC(STORE_CRED, store_cred),
61 PROC(INIT_SEC_CONTEXT, init_sec_context),
62 PROC(ACCEPT_SEC_CONTEXT, accept_sec_context),
63 PROC(RELEASE_HANDLE, release_handle),
64 PROC(GET_MIC, get_mic),
65 PROC(VERIFY, verify),
66 PROC(WRAP, wrap),
67 PROC(UNWRAP, unwrap),
68 PROC(WRAP_SIZE_LIMIT, wrap_size_limit),
69};
70
71
72
73/*
74 * Common transport functions
75 */
76
77static const struct rpc_program gssp_program;
78
79static int gssp_rpc_create(struct net *net, struct rpc_clnt **_clnt)
80{
81 static const struct sockaddr_un gssp_localaddr = {
82 .sun_family = AF_LOCAL,
83 .sun_path = GSSPROXY_SOCK_PATHNAME,
84 };
85 struct rpc_create_args args = {
86 .net = net,
87 .protocol = XPRT_TRANSPORT_LOCAL,
88 .address = (struct sockaddr *)&gssp_localaddr,
89 .addrsize = sizeof(gssp_localaddr),
90 .servername = "localhost",
91 .program = &gssp_program,
92 .version = GSSPROXY_VERS_1,
93 .authflavor = RPC_AUTH_NULL,
94 /*
95 * Note we want connection to be done in the caller's
96 * filesystem namespace. We therefore turn off the idle
97 * timeout, which would result in reconnections being
98 * done without the correct namespace:
99 */
100 .flags = RPC_CLNT_CREATE_NOPING |
101 RPC_CLNT_CREATE_NO_IDLE_TIMEOUT
102 };
103 struct rpc_clnt *clnt;
104 int result = 0;
105
106 clnt = rpc_create(&args);
107 if (IS_ERR(clnt)) {
108 dprintk("RPC: failed to create AF_LOCAL gssproxy "
109 "client (errno %ld).\n", PTR_ERR(clnt));
110 result = PTR_ERR(clnt);
111 *_clnt = NULL;
112 goto out;
113 }
114
115 dprintk("RPC: created new gssp local client (gssp_local_clnt: "
116 "%p)\n", clnt);
117 *_clnt = clnt;
118
119out:
120 return result;
121}
122
123void init_gssp_clnt(struct sunrpc_net *sn)
124{
125 mutex_init(&sn->gssp_lock);
126 sn->gssp_clnt = NULL;
127}
128
129int set_gssp_clnt(struct net *net)
130{
131 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
132 struct rpc_clnt *clnt;
133 int ret;
134
135 mutex_lock(&sn->gssp_lock);
136 ret = gssp_rpc_create(net, &clnt);
137 if (!ret) {
138 if (sn->gssp_clnt)
139 rpc_shutdown_client(sn->gssp_clnt);
140 sn->gssp_clnt = clnt;
141 }
142 mutex_unlock(&sn->gssp_lock);
143 return ret;
144}
145
146void clear_gssp_clnt(struct sunrpc_net *sn)
147{
148 mutex_lock(&sn->gssp_lock);
149 if (sn->gssp_clnt) {
150 rpc_shutdown_client(sn->gssp_clnt);
151 sn->gssp_clnt = NULL;
152 }
153 mutex_unlock(&sn->gssp_lock);
154}
155
156static struct rpc_clnt *get_gssp_clnt(struct sunrpc_net *sn)
157{
158 struct rpc_clnt *clnt;
159
160 mutex_lock(&sn->gssp_lock);
161 clnt = sn->gssp_clnt;
162 if (clnt)
163 atomic_inc(&clnt->cl_count);
164 mutex_unlock(&sn->gssp_lock);
165 return clnt;
166}
167
168static int gssp_call(struct net *net, struct rpc_message *msg)
169{
170 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
171 struct rpc_clnt *clnt;
172 int status;
173
174 clnt = get_gssp_clnt(sn);
175 if (!clnt)
176 return -EIO;
177 status = rpc_call_sync(clnt, msg, 0);
178 if (status < 0) {
179 dprintk("gssp: rpc_call returned error %d\n", -status);
180 switch (status) {
181 case -EPROTONOSUPPORT:
182 status = -EINVAL;
183 break;
184 case -ECONNREFUSED:
185 case -ETIMEDOUT:
186 case -ENOTCONN:
187 status = -EAGAIN;
188 break;
189 case -ERESTARTSYS:
190 if (signalled ())
191 status = -EINTR;
192 break;
193 default:
194 break;
195 }
196 }
197 rpc_release_client(clnt);
198 return status;
199}
200
201static void gssp_free_receive_pages(struct gssx_arg_accept_sec_context *arg)
202{
203 int i;
204
205 for (i = 0; i < arg->npages && arg->pages[i]; i++)
206 __free_page(arg->pages[i]);
207
208 kfree(arg->pages);
209}
210
211static int gssp_alloc_receive_pages(struct gssx_arg_accept_sec_context *arg)
212{
213 arg->npages = DIV_ROUND_UP(NGROUPS_MAX * 4, PAGE_SIZE);
214 arg->pages = kcalloc(arg->npages, sizeof(struct page *), GFP_KERNEL);
215 /*
216 * XXX: actual pages are allocated by xdr layer in
217 * xdr_partial_copy_from_skb.
218 */
219 if (!arg->pages)
220 return -ENOMEM;
221 return 0;
222}
223
224static char *gssp_stringify(struct xdr_netobj *netobj)
225{
226 return kmemdup_nul(netobj->data, netobj->len, GFP_KERNEL);
227}
228
229static void gssp_hostbased_service(char **principal)
230{
231 char *c;
232
233 if (!*principal)
234 return;
235
236 /* terminate and remove realm part */
237 c = strchr(*principal, '@');
238 if (c) {
239 *c = '\0';
240
241 /* change service-hostname delimiter */
242 c = strchr(*principal, '/');
243 if (c)
244 *c = '@';
245 }
246 if (!c) {
247 /* not a service principal */
248 kfree(*principal);
249 *principal = NULL;
250 }
251}
252
253/*
254 * Public functions
255 */
256
257/* numbers somewhat arbitrary but large enough for current needs */
258#define GSSX_MAX_OUT_HANDLE 128
259#define GSSX_MAX_SRC_PRINC 256
260#define GSSX_KMEMBUF (GSSX_max_output_handle_sz + \
261 GSSX_max_oid_sz + \
262 GSSX_max_princ_sz + \
263 sizeof(struct svc_cred))
264
265int gssp_accept_sec_context_upcall(struct net *net,
266 struct gssp_upcall_data *data)
267{
268 struct gssx_ctx ctxh = {
269 .state = data->in_handle
270 };
271 struct gssx_arg_accept_sec_context arg = {
272 .input_token = data->in_token,
273 };
274 struct gssx_ctx rctxh = {
275 /*
276 * pass in the max length we expect for each of these
277 * buffers but let the xdr code kmalloc them:
278 */
279 .exported_context_token.len = GSSX_max_output_handle_sz,
280 .mech.len = GSS_OID_MAX_LEN,
281 .targ_name.display_name.len = GSSX_max_princ_sz,
282 .src_name.display_name.len = GSSX_max_princ_sz
283 };
284 struct gssx_res_accept_sec_context res = {
285 .context_handle = &rctxh,
286 .output_token = &data->out_token
287 };
288 struct rpc_message msg = {
289 .rpc_proc = &gssp_procedures[GSSX_ACCEPT_SEC_CONTEXT],
290 .rpc_argp = &arg,
291 .rpc_resp = &res,
292 .rpc_cred = NULL, /* FIXME ? */
293 };
294 struct xdr_netobj client_name = { 0 , NULL };
295 struct xdr_netobj target_name = { 0, NULL };
296 int ret;
297
298 if (data->in_handle.len != 0)
299 arg.context_handle = &ctxh;
300 res.output_token->len = GSSX_max_output_token_sz;
301
302 ret = gssp_alloc_receive_pages(&arg);
303 if (ret)
304 return ret;
305
306 ret = gssp_call(net, &msg);
307
308 gssp_free_receive_pages(&arg);
309
310 /* we need to fetch all data even in case of error so
311 * that we can free special strctures is they have been allocated */
312 data->major_status = res.status.major_status;
313 data->minor_status = res.status.minor_status;
314 if (res.context_handle) {
315 data->out_handle = rctxh.exported_context_token;
316 data->mech_oid.len = rctxh.mech.len;
317 if (rctxh.mech.data) {
318 memcpy(data->mech_oid.data, rctxh.mech.data,
319 data->mech_oid.len);
320 kfree(rctxh.mech.data);
321 }
322 client_name = rctxh.src_name.display_name;
323 target_name = rctxh.targ_name.display_name;
324 }
325
326 if (res.options.count == 1) {
327 gssx_buffer *value = &res.options.data[0].value;
328 /* Currently we only decode CREDS_VALUE, if we add
329 * anything else we'll have to loop and match on the
330 * option name */
331 if (value->len == 1) {
332 /* steal group info from struct svc_cred */
333 data->creds = *(struct svc_cred *)value->data;
334 data->found_creds = 1;
335 }
336 /* whether we use it or not, free data */
337 kfree(value->data);
338 }
339
340 if (res.options.count != 0) {
341 kfree(res.options.data);
342 }
343
344 /* convert to GSS_NT_HOSTBASED_SERVICE form and set into creds */
345 if (data->found_creds) {
346 if (client_name.data) {
347 data->creds.cr_raw_principal =
348 gssp_stringify(&client_name);
349 data->creds.cr_principal =
350 gssp_stringify(&client_name);
351 gssp_hostbased_service(&data->creds.cr_principal);
352 }
353 if (target_name.data) {
354 data->creds.cr_targ_princ =
355 gssp_stringify(&target_name);
356 gssp_hostbased_service(&data->creds.cr_targ_princ);
357 }
358 }
359 kfree(client_name.data);
360 kfree(target_name.data);
361
362 return ret;
363}
364
365void gssp_free_upcall_data(struct gssp_upcall_data *data)
366{
367 kfree(data->in_handle.data);
368 kfree(data->out_handle.data);
369 kfree(data->out_token.data);
370 free_svc_cred(&data->creds);
371}
372
373/*
374 * Initialization stuff
375 */
376static unsigned int gssp_version1_counts[ARRAY_SIZE(gssp_procedures)];
377static const struct rpc_version gssp_version1 = {
378 .number = GSSPROXY_VERS_1,
379 .nrprocs = ARRAY_SIZE(gssp_procedures),
380 .procs = gssp_procedures,
381 .counts = gssp_version1_counts,
382};
383
384static const struct rpc_version *gssp_version[] = {
385 NULL,
386 &gssp_version1,
387};
388
389static struct rpc_stat gssp_stats;
390
391static const struct rpc_program gssp_program = {
392 .name = "gssproxy",
393 .number = GSSPROXY_PROGRAM,
394 .nrvers = ARRAY_SIZE(gssp_version),
395 .version = gssp_version,
396 .stats = &gssp_stats,
397};
1/*
2 * linux/net/sunrpc/gss_rpc_upcall.c
3 *
4 * Copyright (C) 2012 Simo Sorce <simo@redhat.com>
5 *
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.
10 *
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.
15 *
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.
19 */
20
21#include <linux/types.h>
22#include <linux/un.h>
23
24#include <linux/sunrpc/svcauth.h>
25#include "gss_rpc_upcall.h"
26
27#define GSSPROXY_SOCK_PATHNAME "/var/run/gssproxy.sock"
28
29#define GSSPROXY_PROGRAM (400112u)
30#define GSSPROXY_VERS_1 (1u)
31
32/*
33 * Encoding/Decoding functions
34 */
35
36enum {
37 GSSX_NULL = 0, /* Unused */
38 GSSX_INDICATE_MECHS = 1,
39 GSSX_GET_CALL_CONTEXT = 2,
40 GSSX_IMPORT_AND_CANON_NAME = 3,
41 GSSX_EXPORT_CRED = 4,
42 GSSX_IMPORT_CRED = 5,
43 GSSX_ACQUIRE_CRED = 6,
44 GSSX_STORE_CRED = 7,
45 GSSX_INIT_SEC_CONTEXT = 8,
46 GSSX_ACCEPT_SEC_CONTEXT = 9,
47 GSSX_RELEASE_HANDLE = 10,
48 GSSX_GET_MIC = 11,
49 GSSX_VERIFY = 12,
50 GSSX_WRAP = 13,
51 GSSX_UNWRAP = 14,
52 GSSX_WRAP_SIZE_LIMIT = 15,
53};
54
55#define PROC(proc, name) \
56[GSSX_##proc] = { \
57 .p_proc = GSSX_##proc, \
58 .p_encode = (kxdreproc_t)gssx_enc_##name, \
59 .p_decode = (kxdrdproc_t)gssx_dec_##name, \
60 .p_arglen = GSSX_ARG_##name##_sz, \
61 .p_replen = GSSX_RES_##name##_sz, \
62 .p_statidx = GSSX_##proc, \
63 .p_name = #proc, \
64}
65
66static struct rpc_procinfo gssp_procedures[] = {
67 PROC(INDICATE_MECHS, indicate_mechs),
68 PROC(GET_CALL_CONTEXT, get_call_context),
69 PROC(IMPORT_AND_CANON_NAME, import_and_canon_name),
70 PROC(EXPORT_CRED, export_cred),
71 PROC(IMPORT_CRED, import_cred),
72 PROC(ACQUIRE_CRED, acquire_cred),
73 PROC(STORE_CRED, store_cred),
74 PROC(INIT_SEC_CONTEXT, init_sec_context),
75 PROC(ACCEPT_SEC_CONTEXT, accept_sec_context),
76 PROC(RELEASE_HANDLE, release_handle),
77 PROC(GET_MIC, get_mic),
78 PROC(VERIFY, verify),
79 PROC(WRAP, wrap),
80 PROC(UNWRAP, unwrap),
81 PROC(WRAP_SIZE_LIMIT, wrap_size_limit),
82};
83
84
85
86/*
87 * Common transport functions
88 */
89
90static const struct rpc_program gssp_program;
91
92static int gssp_rpc_create(struct net *net, struct rpc_clnt **_clnt)
93{
94 static const struct sockaddr_un gssp_localaddr = {
95 .sun_family = AF_LOCAL,
96 .sun_path = GSSPROXY_SOCK_PATHNAME,
97 };
98 struct rpc_create_args args = {
99 .net = net,
100 .protocol = XPRT_TRANSPORT_LOCAL,
101 .address = (struct sockaddr *)&gssp_localaddr,
102 .addrsize = sizeof(gssp_localaddr),
103 .servername = "localhost",
104 .program = &gssp_program,
105 .version = GSSPROXY_VERS_1,
106 .authflavor = RPC_AUTH_NULL,
107 /*
108 * Note we want connection to be done in the caller's
109 * filesystem namespace. We therefore turn off the idle
110 * timeout, which would result in reconnections being
111 * done without the correct namespace:
112 */
113 .flags = RPC_CLNT_CREATE_NOPING |
114 RPC_CLNT_CREATE_NO_IDLE_TIMEOUT
115 };
116 struct rpc_clnt *clnt;
117 int result = 0;
118
119 clnt = rpc_create(&args);
120 if (IS_ERR(clnt)) {
121 dprintk("RPC: failed to create AF_LOCAL gssproxy "
122 "client (errno %ld).\n", PTR_ERR(clnt));
123 result = PTR_ERR(clnt);
124 *_clnt = NULL;
125 goto out;
126 }
127
128 dprintk("RPC: created new gssp local client (gssp_local_clnt: "
129 "%p)\n", clnt);
130 *_clnt = clnt;
131
132out:
133 return result;
134}
135
136void init_gssp_clnt(struct sunrpc_net *sn)
137{
138 mutex_init(&sn->gssp_lock);
139 sn->gssp_clnt = NULL;
140}
141
142int set_gssp_clnt(struct net *net)
143{
144 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
145 struct rpc_clnt *clnt;
146 int ret;
147
148 mutex_lock(&sn->gssp_lock);
149 ret = gssp_rpc_create(net, &clnt);
150 if (!ret) {
151 if (sn->gssp_clnt)
152 rpc_shutdown_client(sn->gssp_clnt);
153 sn->gssp_clnt = clnt;
154 }
155 mutex_unlock(&sn->gssp_lock);
156 return ret;
157}
158
159void clear_gssp_clnt(struct sunrpc_net *sn)
160{
161 mutex_lock(&sn->gssp_lock);
162 if (sn->gssp_clnt) {
163 rpc_shutdown_client(sn->gssp_clnt);
164 sn->gssp_clnt = NULL;
165 }
166 mutex_unlock(&sn->gssp_lock);
167}
168
169static struct rpc_clnt *get_gssp_clnt(struct sunrpc_net *sn)
170{
171 struct rpc_clnt *clnt;
172
173 mutex_lock(&sn->gssp_lock);
174 clnt = sn->gssp_clnt;
175 if (clnt)
176 atomic_inc(&clnt->cl_count);
177 mutex_unlock(&sn->gssp_lock);
178 return clnt;
179}
180
181static int gssp_call(struct net *net, struct rpc_message *msg)
182{
183 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
184 struct rpc_clnt *clnt;
185 int status;
186
187 clnt = get_gssp_clnt(sn);
188 if (!clnt)
189 return -EIO;
190 status = rpc_call_sync(clnt, msg, 0);
191 if (status < 0) {
192 dprintk("gssp: rpc_call returned error %d\n", -status);
193 switch (status) {
194 case -EPROTONOSUPPORT:
195 status = -EINVAL;
196 break;
197 case -ECONNREFUSED:
198 case -ETIMEDOUT:
199 case -ENOTCONN:
200 status = -EAGAIN;
201 break;
202 case -ERESTARTSYS:
203 if (signalled ())
204 status = -EINTR;
205 break;
206 default:
207 break;
208 }
209 }
210 rpc_release_client(clnt);
211 return status;
212}
213
214static void gssp_free_receive_pages(struct gssx_arg_accept_sec_context *arg)
215{
216 int i;
217
218 for (i = 0; i < arg->npages && arg->pages[i]; i++)
219 __free_page(arg->pages[i]);
220
221 kfree(arg->pages);
222}
223
224static int gssp_alloc_receive_pages(struct gssx_arg_accept_sec_context *arg)
225{
226 arg->npages = DIV_ROUND_UP(NGROUPS_MAX * 4, PAGE_SIZE);
227 arg->pages = kzalloc(arg->npages * sizeof(struct page *), GFP_KERNEL);
228 /*
229 * XXX: actual pages are allocated by xdr layer in
230 * xdr_partial_copy_from_skb.
231 */
232 if (!arg->pages)
233 return -ENOMEM;
234 return 0;
235}
236
237/*
238 * Public functions
239 */
240
241/* numbers somewhat arbitrary but large enough for current needs */
242#define GSSX_MAX_OUT_HANDLE 128
243#define GSSX_MAX_SRC_PRINC 256
244#define GSSX_KMEMBUF (GSSX_max_output_handle_sz + \
245 GSSX_max_oid_sz + \
246 GSSX_max_princ_sz + \
247 sizeof(struct svc_cred))
248
249int gssp_accept_sec_context_upcall(struct net *net,
250 struct gssp_upcall_data *data)
251{
252 struct gssx_ctx ctxh = {
253 .state = data->in_handle
254 };
255 struct gssx_arg_accept_sec_context arg = {
256 .input_token = data->in_token,
257 };
258 struct gssx_ctx rctxh = {
259 /*
260 * pass in the max length we expect for each of these
261 * buffers but let the xdr code kmalloc them:
262 */
263 .exported_context_token.len = GSSX_max_output_handle_sz,
264 .mech.len = GSS_OID_MAX_LEN,
265 .src_name.display_name.len = GSSX_max_princ_sz
266 };
267 struct gssx_res_accept_sec_context res = {
268 .context_handle = &rctxh,
269 .output_token = &data->out_token
270 };
271 struct rpc_message msg = {
272 .rpc_proc = &gssp_procedures[GSSX_ACCEPT_SEC_CONTEXT],
273 .rpc_argp = &arg,
274 .rpc_resp = &res,
275 .rpc_cred = NULL, /* FIXME ? */
276 };
277 struct xdr_netobj client_name = { 0 , NULL };
278 int ret;
279
280 if (data->in_handle.len != 0)
281 arg.context_handle = &ctxh;
282 res.output_token->len = GSSX_max_output_token_sz;
283
284 ret = gssp_alloc_receive_pages(&arg);
285 if (ret)
286 return ret;
287
288 /* use nfs/ for targ_name ? */
289
290 ret = gssp_call(net, &msg);
291
292 gssp_free_receive_pages(&arg);
293
294 /* we need to fetch all data even in case of error so
295 * that we can free special strctures is they have been allocated */
296 data->major_status = res.status.major_status;
297 data->minor_status = res.status.minor_status;
298 if (res.context_handle) {
299 data->out_handle = rctxh.exported_context_token;
300 data->mech_oid.len = rctxh.mech.len;
301 if (rctxh.mech.data)
302 memcpy(data->mech_oid.data, rctxh.mech.data,
303 data->mech_oid.len);
304 client_name = rctxh.src_name.display_name;
305 }
306
307 if (res.options.count == 1) {
308 gssx_buffer *value = &res.options.data[0].value;
309 /* Currently we only decode CREDS_VALUE, if we add
310 * anything else we'll have to loop and match on the
311 * option name */
312 if (value->len == 1) {
313 /* steal group info from struct svc_cred */
314 data->creds = *(struct svc_cred *)value->data;
315 data->found_creds = 1;
316 }
317 /* whether we use it or not, free data */
318 kfree(value->data);
319 }
320
321 if (res.options.count != 0) {
322 kfree(res.options.data);
323 }
324
325 /* convert to GSS_NT_HOSTBASED_SERVICE form and set into creds */
326 if (data->found_creds && client_name.data != NULL) {
327 char *c;
328
329 data->creds.cr_raw_principal = kstrndup(client_name.data,
330 client_name.len, GFP_KERNEL);
331
332 data->creds.cr_principal = kstrndup(client_name.data,
333 client_name.len, GFP_KERNEL);
334 if (data->creds.cr_principal) {
335 /* terminate and remove realm part */
336 c = strchr(data->creds.cr_principal, '@');
337 if (c) {
338 *c = '\0';
339
340 /* change service-hostname delimiter */
341 c = strchr(data->creds.cr_principal, '/');
342 if (c) *c = '@';
343 }
344 if (!c) {
345 /* not a service principal */
346 kfree(data->creds.cr_principal);
347 data->creds.cr_principal = NULL;
348 }
349 }
350 }
351 kfree(client_name.data);
352
353 return ret;
354}
355
356void gssp_free_upcall_data(struct gssp_upcall_data *data)
357{
358 kfree(data->in_handle.data);
359 kfree(data->out_handle.data);
360 kfree(data->out_token.data);
361 free_svc_cred(&data->creds);
362}
363
364/*
365 * Initialization stuff
366 */
367
368static const struct rpc_version gssp_version1 = {
369 .number = GSSPROXY_VERS_1,
370 .nrprocs = ARRAY_SIZE(gssp_procedures),
371 .procs = gssp_procedures,
372};
373
374static const struct rpc_version *gssp_version[] = {
375 NULL,
376 &gssp_version1,
377};
378
379static struct rpc_stat gssp_stats;
380
381static const struct rpc_program gssp_program = {
382 .name = "gssproxy",
383 .number = GSSPROXY_PROGRAM,
384 .nrvers = ARRAY_SIZE(gssp_version),
385 .version = gssp_version,
386 .stats = &gssp_stats,
387};