1/*
2 * Copyright (c) 2010, Oracle America, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following
12 * disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 * * Neither the name of the "Oracle America, Inc." nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
25 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <rpcsvc/yp.h>
33#include <rpcsvc/ypclnt.h>
34#include <shlib-compat.h>
35
36/* The NIS v2 protocol suggests 1024 bytes as a maximum length of all fields.
37 Current Linux systems don't use this limit. To remain compatible with
38 recent Linux systems we choose limits large enough to load large key and
39 data values, but small enough to not pose a DoS threat. */
40
41#define XDRMAXNAME 1024
42#define XDRMAXRECORD (16 * 1024 * 1024)
43
44bool_t
45xdr_ypstat (XDR *xdrs, ypstat *objp)
46{
47 return xdr_enum (xdrs: xdrs, ep: (enum_t *) objp);
48}
49libnsl_hidden_nolink_def (xdr_ypstat, GLIBC_2_0)
50
51bool_t
52xdr_ypxfrstat (XDR *xdrs, ypxfrstat *objp)
53{
54 return xdr_enum (xdrs: xdrs, ep: (enum_t *) objp);
55}
56libnsl_hidden_nolink_def (xdr_ypxfrstat, GLIBC_2_0)
57
58bool_t
59xdr_domainname (XDR *xdrs, domainname *objp)
60{
61 return xdr_string (xdrs: xdrs, cpp: objp, XDRMAXNAME);
62}
63libnsl_hidden_nolink_def (xdr_domainname, GLIBC_2_0)
64
65bool_t
66xdr_mapname (XDR *xdrs, mapname *objp)
67{
68 return xdr_string (xdrs: xdrs, cpp: objp, XDRMAXNAME);
69}
70libnsl_hidden_nolink_def (xdr_mapname, GLIBC_2_0)
71
72bool_t
73xdr_peername (XDR *xdrs, peername *objp)
74{
75 return xdr_string (xdrs: xdrs, cpp: objp, XDRMAXNAME);
76}
77libnsl_hidden_nolink_def (xdr_peername, GLIBC_2_0)
78
79bool_t
80xdr_keydat (XDR *xdrs, keydat *objp)
81{
82 return xdr_bytes (xdrs: xdrs, cpp: (char **) &objp->keydat_val,
83 sizep: (u_int *) &objp->keydat_len, XDRMAXRECORD);
84}
85libnsl_hidden_nolink_def (xdr_keydat, GLIBC_2_0)
86
87bool_t
88xdr_valdat (XDR *xdrs, valdat *objp)
89{
90 return xdr_bytes (xdrs: xdrs, cpp: (char **) &objp->valdat_val,
91 sizep: (u_int *) &objp->valdat_len, XDRMAXRECORD);
92}
93libnsl_hidden_nolink_def (xdr_valdat, GLIBC_2_0)
94
95bool_t
96xdr_ypmap_parms (XDR *xdrs, ypmap_parms *objp)
97{
98 if (!xdr_domainname (xdrs, objp: &objp->domain))
99 return FALSE;
100 if (!xdr_mapname (xdrs, objp: &objp->map))
101 return FALSE;
102 if (!xdr_u_int (xdrs: xdrs, up: &objp->ordernum))
103 return FALSE;
104 return xdr_peername (xdrs, objp: &objp->peer);
105}
106libnsl_hidden_nolink_def (xdr_ypmap_parms, GLIBC_2_0)
107
108bool_t
109xdr_ypreq_key (XDR *xdrs, ypreq_key *objp)
110{
111 if (!xdr_domainname (xdrs, objp: &objp->domain))
112 return FALSE;
113 if (!xdr_mapname (xdrs, objp: &objp->map))
114 return FALSE;
115 return xdr_keydat (xdrs, objp: &objp->key);
116}
117libnsl_hidden_nolink_def (xdr_ypreq_key, GLIBC_2_0)
118
119bool_t
120xdr_ypreq_nokey (XDR *xdrs, ypreq_nokey *objp)
121{
122 if (!xdr_domainname (xdrs, objp: &objp->domain))
123 return FALSE;
124 return xdr_mapname (xdrs, objp: &objp->map);
125}
126libnsl_hidden_nolink_def (xdr_ypreq_nokey, GLIBC_2_0)
127
128bool_t
129xdr_ypreq_xfr (XDR *xdrs, ypreq_xfr *objp)
130{
131 if (!xdr_ypmap_parms (xdrs, objp: &objp->map_parms))
132 return FALSE;
133 if (!xdr_u_int (xdrs: xdrs, up: &objp->transid))
134 return FALSE;
135 if (!xdr_u_int (xdrs: xdrs, up: &objp->prog))
136 return FALSE;
137 return xdr_u_int (xdrs: xdrs, up: &objp->port);
138}
139libnsl_hidden_nolink_def (xdr_ypreq_xfr, GLIBC_2_0)
140
141bool_t
142xdr_ypresp_val (XDR *xdrs, ypresp_val *objp)
143{
144 if (!xdr_ypstat (xdrs, objp: &objp->stat))
145 return FALSE;
146 return xdr_valdat (xdrs, objp: &objp->val);
147}
148libnsl_hidden_nolink_def (xdr_ypresp_val, GLIBC_2_0)
149
150bool_t
151xdr_ypresp_key_val (XDR *xdrs, ypresp_key_val *objp)
152{
153 if (!xdr_ypstat (xdrs, objp: &objp->stat))
154 return FALSE;
155 if (!xdr_valdat (xdrs, objp: &objp->val))
156 return FALSE;
157 return xdr_keydat (xdrs, objp: &objp->key);
158}
159libnsl_hidden_nolink_def (xdr_ypresp_key_val, GLIBC_2_0)
160
161bool_t
162xdr_ypresp_master (XDR *xdrs, ypresp_master *objp)
163{
164 if (!xdr_ypstat (xdrs, objp: &objp->stat))
165 return FALSE;
166 return xdr_peername (xdrs, objp: &objp->peer);
167}
168libnsl_hidden_nolink_def (xdr_ypresp_master, GLIBC_2_0)
169
170bool_t
171xdr_ypresp_order (XDR *xdrs, ypresp_order *objp)
172{
173 if (!xdr_ypstat (xdrs, objp: &objp->stat))
174 return FALSE;
175 return xdr_u_int (xdrs: xdrs, up: &objp->ordernum);
176}
177libnsl_hidden_nolink_def (xdr_ypresp_order, GLIBC_2_0)
178
179bool_t
180xdr_ypresp_all (XDR *xdrs, ypresp_all *objp)
181{
182 if (!xdr_bool (xdrs: xdrs, bp: &objp->more))
183 return FALSE;
184 switch (objp->more)
185 {
186 case TRUE:
187 return xdr_ypresp_key_val (xdrs, objp: &objp->ypresp_all_u.val);
188 case FALSE:
189 break;
190 default:
191 return FALSE;
192 }
193 return TRUE;
194}
195libnsl_hidden_nolink_def (xdr_ypresp_all, GLIBC_2_0)
196
197bool_t
198xdr_ypresp_xfr (XDR *xdrs, ypresp_xfr *objp)
199{
200 if (!xdr_u_int (xdrs: xdrs, up: &objp->transid))
201 return FALSE;
202 return xdr_ypxfrstat (xdrs, objp: &objp->xfrstat);
203}
204libnsl_hidden_nolink_def (xdr_ypresp_xfr, GLIBC_2_0)
205
206bool_t
207xdr_ypmaplist (XDR *xdrs, ypmaplist *objp)
208{
209 if (!xdr_mapname (xdrs, objp: &objp->map))
210 return FALSE;
211 /* Prevent gcc warning about alias violation. */
212 char **tp = (void *) &objp->next;
213 return xdr_pointer (xdrs: xdrs, objpp: tp, obj_size: sizeof (ypmaplist), xdr_obj: (xdrproc_t) xdr_ypmaplist);
214}
215libnsl_hidden_nolink_def (xdr_ypmaplist, GLIBC_2_0)
216
217bool_t
218xdr_ypresp_maplist (XDR *xdrs, ypresp_maplist *objp)
219{
220 if (!xdr_ypstat (xdrs, objp: &objp->stat))
221 return FALSE;
222 /* Prevent gcc warning about alias violation. */
223 char **tp = (void *) &objp->maps;
224 return xdr_pointer (xdrs: xdrs, objpp: tp, obj_size: sizeof (ypmaplist), xdr_obj: (xdrproc_t) xdr_ypmaplist);
225}
226libnsl_hidden_nolink_def (xdr_ypresp_maplist, GLIBC_2_0)
227
228bool_t
229xdr_yppush_status (XDR *xdrs, yppush_status *objp)
230{
231 return xdr_enum (xdrs: xdrs, ep: (enum_t *) objp);
232}
233libnsl_hidden_nolink_def (xdr_yppush_status, GLIBC_2_0)
234
235bool_t
236xdr_yppushresp_xfr (XDR *xdrs, yppushresp_xfr *objp)
237{
238 if (!xdr_u_int (xdrs: xdrs, up: &objp->transid))
239 return FALSE;
240 return xdr_yppush_status (xdrs, objp: &objp->status);
241}
242libnsl_hidden_nolink_def (xdr_yppushresp_xfr, GLIBC_2_0)
243
244bool_t
245xdr_ypbind_resptype (XDR *xdrs, ypbind_resptype *objp)
246{
247 return xdr_enum (xdrs: xdrs, ep: (enum_t *) objp);
248}
249libnsl_hidden_nolink_def (xdr_ypbind_resptype, GLIBC_2_0)
250
251bool_t
252xdr_ypbind_binding (XDR *xdrs, ypbind_binding *objp)
253{
254 if (!xdr_opaque (xdrs: xdrs, cp: objp->ypbind_binding_addr, cnt: 4))
255 return FALSE;
256 return xdr_opaque (xdrs: xdrs, cp: objp->ypbind_binding_port, cnt: 2);
257}
258libnsl_hidden_nolink_def (xdr_ypbind_binding, GLIBC_2_0)
259
260bool_t
261xdr_ypbind_resp (XDR *xdrs, ypbind_resp *objp)
262{
263 if (!xdr_ypbind_resptype (xdrs, objp: &objp->ypbind_status))
264 return FALSE;
265 switch (objp->ypbind_status)
266 {
267 case YPBIND_FAIL_VAL:
268 return xdr_u_int (xdrs: xdrs, up: &objp->ypbind_resp_u.ypbind_error);
269 case YPBIND_SUCC_VAL:
270 return xdr_ypbind_binding (xdrs, objp: &objp->ypbind_resp_u.ypbind_bindinfo);
271 }
272 return FALSE;
273}
274libnsl_hidden_nolink_def (xdr_ypbind_resp, GLIBC_2_0)
275
276bool_t
277xdr_ypbind_setdom (XDR *xdrs, ypbind_setdom *objp)
278{
279 if (!xdr_domainname (xdrs, objp: &objp->ypsetdom_domain))
280 return FALSE;
281 if (!xdr_ypbind_binding (xdrs, objp: &objp->ypsetdom_binding))
282 return FALSE;
283 return xdr_u_int (xdrs: xdrs, up: &objp->ypsetdom_vers);
284}
285libnsl_hidden_nolink_def (xdr_ypbind_setdom, GLIBC_2_0)
286
287bool_t
288xdr_ypall(XDR *xdrs, struct ypall_callback *incallback)
289{
290 struct ypresp_key_val out;
291 char key[YPMAXRECORD], val[YPMAXRECORD];
292
293 /*
294 * Set up key/val struct to be used during the transaction.
295 */
296 memset(s: &out, c: 0, n: sizeof out);
297 out.key.keydat_val = key;
298 out.key.keydat_len = sizeof(key);
299 out.val.valdat_val = val;
300 out.val.valdat_len = sizeof(val);
301
302 for (;;) {
303 bool_t more, status;
304
305 /* Values pending? */
306 if (!xdr_bool(xdrs: xdrs, bp: &more))
307 return FALSE; /* can't tell! */
308 if (!more)
309 return TRUE; /* no more */
310
311 /* Transfer key/value pair. */
312 status = xdr_ypresp_key_val(xdrs, objp: &out);
313
314 /*
315 * If we succeeded, call the callback function.
316 * The callback will return TRUE when it wants
317 * no more values. If we fail, indicate the
318 * error.
319 */
320 if (status) {
321 if ((*incallback->foreach)(out.stat,
322 (char *)out.key.keydat_val, out.key.keydat_len,
323 (char *)out.val.valdat_val, out.val.valdat_len,
324 incallback->data))
325 return TRUE;
326 } else
327 return FALSE;
328 }
329}
330libnsl_hidden_nolink_def (xdr_ypall, GLIBC_2_2)
331

source code of glibc/nis/yp_xdr.c