1 |
|
|
/* $OpenBSD: yplib_host.c,v 1.19 2015/09/11 12:42:47 deraadt Exp $ */ |
2 |
|
|
|
3 |
|
|
/* |
4 |
|
|
* Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com> |
5 |
|
|
* All rights reserved. |
6 |
|
|
* |
7 |
|
|
* Redistribution and use in source and binary forms, with or without |
8 |
|
|
* modification, are permitted provided that the following conditions |
9 |
|
|
* are met: |
10 |
|
|
* 1. Redistributions of source code must retain the above copyright |
11 |
|
|
* notice, this list of conditions and the following disclaimer. |
12 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright |
13 |
|
|
* notice, this list of conditions and the following disclaimer in the |
14 |
|
|
* documentation and/or other materials provided with the distribution. |
15 |
|
|
* |
16 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
17 |
|
|
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
18 |
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
19 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
20 |
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
21 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
22 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
23 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
24 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
25 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
26 |
|
|
* SUCH DAMAGE. |
27 |
|
|
*/ |
28 |
|
|
|
29 |
|
|
#include <sys/types.h> |
30 |
|
|
#include <sys/socket.h> |
31 |
|
|
#include <sys/file.h> |
32 |
|
|
#include <sys/uio.h> |
33 |
|
|
#include <errno.h> |
34 |
|
|
#include <stdio.h> |
35 |
|
|
#include <stdlib.h> |
36 |
|
|
#include <string.h> |
37 |
|
|
#include <netinet/in.h> |
38 |
|
|
#include <arpa/inet.h> |
39 |
|
|
#include <netdb.h> |
40 |
|
|
#include <unistd.h> |
41 |
|
|
#include <rpc/rpc.h> |
42 |
|
|
#include <rpc/xdr.h> |
43 |
|
|
#include <rpcsvc/yp.h> |
44 |
|
|
#include <rpcsvc/ypclnt.h> |
45 |
|
|
#include "yplib_host.h" |
46 |
|
|
|
47 |
|
|
int _yplib_host_timeout = 10; |
48 |
|
|
|
49 |
|
|
CLIENT * |
50 |
|
|
yp_bind_host(char *server, u_long program, u_long version, u_short port, |
51 |
|
|
int usetcp) |
52 |
|
|
{ |
53 |
|
|
struct sockaddr_in rsrv_sin; |
54 |
|
|
static CLIENT *client; |
55 |
|
|
struct hostent *h; |
56 |
|
|
struct timeval tv; |
57 |
|
|
int rsrv_sock; |
58 |
|
|
|
59 |
|
|
memset(&rsrv_sin, 0, sizeof rsrv_sin); |
60 |
|
|
rsrv_sin.sin_len = sizeof rsrv_sin; |
61 |
|
|
rsrv_sin.sin_family = AF_INET; |
62 |
|
|
rsrv_sock = RPC_ANYSOCK; |
63 |
|
|
if (port != 0) |
64 |
|
|
rsrv_sin.sin_port = htons(port); |
65 |
|
|
|
66 |
|
|
if (*server >= '0' && *server <= '9') { |
67 |
|
|
if (inet_aton(server, &rsrv_sin.sin_addr) == 0) { |
68 |
|
|
fprintf(stderr, "inet_aton: invalid address %s.\n", |
69 |
|
|
server); |
70 |
|
|
exit(1); |
71 |
|
|
} |
72 |
|
|
} else { |
73 |
|
|
h = gethostbyname(server); |
74 |
|
|
if (h == NULL) { |
75 |
|
|
fprintf(stderr, "gethostbyname: unknown host %s.\n", |
76 |
|
|
server); |
77 |
|
|
exit(1); |
78 |
|
|
} |
79 |
|
|
rsrv_sin.sin_addr.s_addr = *(u_int32_t *)h->h_addr; |
80 |
|
|
} |
81 |
|
|
|
82 |
|
|
tv.tv_sec = 10; |
83 |
|
|
tv.tv_usec = 0; |
84 |
|
|
|
85 |
|
|
if (usetcp) |
86 |
|
|
client = clnttcp_create(&rsrv_sin, program, version, |
87 |
|
|
&rsrv_sock, 0, 0); |
88 |
|
|
else |
89 |
|
|
client = clntudp_create(&rsrv_sin, program, version, tv, |
90 |
|
|
&rsrv_sock); |
91 |
|
|
|
92 |
|
|
if (client == NULL) { |
93 |
|
|
fprintf(stderr, "clntudp_create: no contact with host %s.\n", |
94 |
|
|
server); |
95 |
|
|
exit(1); |
96 |
|
|
} |
97 |
|
|
return(client); |
98 |
|
|
} |
99 |
|
|
|
100 |
|
|
CLIENT * |
101 |
|
|
yp_bind_local(u_long program, u_long version) |
102 |
|
|
{ |
103 |
|
|
struct sockaddr_in rsrv_sin; |
104 |
|
|
static CLIENT *client; |
105 |
|
|
struct timeval tv; |
106 |
|
|
int rsrv_sock; |
107 |
|
|
|
108 |
|
|
memset(&rsrv_sin, 0, sizeof rsrv_sin); |
109 |
|
|
rsrv_sin.sin_len = sizeof rsrv_sin; |
110 |
|
|
rsrv_sin.sin_family = AF_INET; |
111 |
|
|
rsrv_sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
112 |
|
|
rsrv_sock = RPC_ANYSOCK; |
113 |
|
|
|
114 |
|
|
tv.tv_sec = 10; |
115 |
|
|
tv.tv_usec = 0; |
116 |
|
|
|
117 |
|
|
client = clntudp_create(&rsrv_sin, program, version, tv, &rsrv_sock); |
118 |
|
|
if (client == NULL) { |
119 |
|
|
fprintf(stderr,"clntudp_create: no contact with localhost.\n"); |
120 |
|
|
exit(1); |
121 |
|
|
} |
122 |
|
|
return(client); |
123 |
|
|
} |
124 |
|
|
|
125 |
|
|
int |
126 |
|
|
yp_match_host(CLIENT *client, char *indomain, char *inmap, const char *inkey, |
127 |
|
|
int inkeylen, char **outval, int *outvallen) |
128 |
|
|
{ |
129 |
|
|
struct ypresp_val yprv; |
130 |
|
|
struct ypreq_key yprk; |
131 |
|
|
struct timeval tv; |
132 |
|
|
int r; |
133 |
|
|
|
134 |
|
|
*outval = NULL; |
135 |
|
|
*outvallen = 0; |
136 |
|
|
|
137 |
|
|
tv.tv_sec = _yplib_host_timeout; |
138 |
|
|
tv.tv_usec = 0; |
139 |
|
|
|
140 |
|
|
yprk.domain = indomain; |
141 |
|
|
yprk.map = inmap; |
142 |
|
|
yprk.key.keydat_val = (char *)inkey; |
143 |
|
|
yprk.key.keydat_len = inkeylen; |
144 |
|
|
|
145 |
|
|
memset(&yprv, 0, sizeof yprv); |
146 |
|
|
|
147 |
|
|
r = clnt_call(client, YPPROC_MATCH, |
148 |
|
|
xdr_ypreq_key, &yprk, xdr_ypresp_val, &yprv, tv); |
149 |
|
|
if (r != RPC_SUCCESS) |
150 |
|
|
clnt_perror(client, "yp_match_host: clnt_call"); |
151 |
|
|
if ( !(r = ypprot_err(yprv.stat)) ) { |
152 |
|
|
*outvallen = yprv.val.valdat_len; |
153 |
|
|
*outval = malloc(*outvallen+1); |
154 |
|
|
memcpy(*outval, yprv.val.valdat_val, *outvallen); |
155 |
|
|
(*outval)[*outvallen] = '\0'; |
156 |
|
|
} |
157 |
|
|
xdr_free(xdr_ypresp_val, (char *)&yprv); |
158 |
|
|
return r; |
159 |
|
|
} |
160 |
|
|
|
161 |
|
|
int |
162 |
|
|
yp_first_host(CLIENT *client, char *indomain, char *inmap, char **outkey, |
163 |
|
|
int *outkeylen, char **outval, int *outvallen) |
164 |
|
|
{ |
165 |
|
|
struct ypresp_key_val yprkv; |
166 |
|
|
struct ypreq_nokey yprnk; |
167 |
|
|
struct timeval tv; |
168 |
|
|
int r; |
169 |
|
|
|
170 |
|
|
*outkey = *outval = NULL; |
171 |
|
|
*outkeylen = *outvallen = 0; |
172 |
|
|
|
173 |
|
|
tv.tv_sec = _yplib_host_timeout; |
174 |
|
|
tv.tv_usec = 0; |
175 |
|
|
|
176 |
|
|
yprnk.domain = indomain; |
177 |
|
|
yprnk.map = inmap; |
178 |
|
|
memset(&yprkv, 0, sizeof yprkv); |
179 |
|
|
|
180 |
|
|
r = clnt_call(client, YPPROC_FIRST, |
181 |
|
|
xdr_ypreq_nokey, &yprnk, xdr_ypresp_key_val, &yprkv, tv); |
182 |
|
|
if (r != RPC_SUCCESS) |
183 |
|
|
clnt_perror(client, "yp_first_host: clnt_call"); |
184 |
|
|
if ( !(r = ypprot_err(yprkv.stat)) ) { |
185 |
|
|
*outkeylen = yprkv.key.keydat_len; |
186 |
|
|
*outkey = malloc(*outkeylen+1); |
187 |
|
|
memcpy(*outkey, yprkv.key.keydat_val, *outkeylen); |
188 |
|
|
(*outkey)[*outkeylen] = '\0'; |
189 |
|
|
*outvallen = yprkv.val.valdat_len; |
190 |
|
|
*outval = malloc(*outvallen+1); |
191 |
|
|
memcpy(*outval, yprkv.val.valdat_val, *outvallen); |
192 |
|
|
(*outval)[*outvallen] = '\0'; |
193 |
|
|
} |
194 |
|
|
xdr_free(xdr_ypresp_key_val, (char *)&yprkv); |
195 |
|
|
return r; |
196 |
|
|
} |
197 |
|
|
|
198 |
|
|
int |
199 |
|
|
yp_next_host(CLIENT *client, char *indomain, char *inmap, char *inkey, |
200 |
|
|
int inkeylen, char **outkey, int *outkeylen, char **outval, int *outvallen) |
201 |
|
|
{ |
202 |
|
|
struct ypresp_key_val yprkv; |
203 |
|
|
struct ypreq_key yprk; |
204 |
|
|
struct timeval tv; |
205 |
|
|
int r; |
206 |
|
|
|
207 |
|
|
*outkey = *outval = NULL; |
208 |
|
|
*outkeylen = *outvallen = 0; |
209 |
|
|
|
210 |
|
|
tv.tv_sec = _yplib_host_timeout; |
211 |
|
|
tv.tv_usec = 0; |
212 |
|
|
|
213 |
|
|
yprk.domain = indomain; |
214 |
|
|
yprk.map = inmap; |
215 |
|
|
yprk.key.keydat_val = inkey; |
216 |
|
|
yprk.key.keydat_len = inkeylen; |
217 |
|
|
memset(&yprkv, 0, sizeof yprkv); |
218 |
|
|
|
219 |
|
|
r = clnt_call(client, YPPROC_NEXT, |
220 |
|
|
xdr_ypreq_key, &yprk, xdr_ypresp_key_val, &yprkv, tv); |
221 |
|
|
if (r != RPC_SUCCESS) |
222 |
|
|
clnt_perror(client, "yp_next_host: clnt_call"); |
223 |
|
|
if ( !(r = ypprot_err(yprkv.stat)) ) { |
224 |
|
|
*outkeylen = yprkv.key.keydat_len; |
225 |
|
|
*outkey = malloc(*outkeylen+1); |
226 |
|
|
memcpy(*outkey, yprkv.key.keydat_val, *outkeylen); |
227 |
|
|
(*outkey)[*outkeylen] = '\0'; |
228 |
|
|
*outvallen = yprkv.val.valdat_len; |
229 |
|
|
*outval = malloc(*outvallen+1); |
230 |
|
|
memcpy(*outval, yprkv.val.valdat_val, *outvallen); |
231 |
|
|
(*outval)[*outvallen] = '\0'; |
232 |
|
|
} |
233 |
|
|
xdr_free(xdr_ypresp_key_val, (char *)&yprkv); |
234 |
|
|
return r; |
235 |
|
|
} |
236 |
|
|
|
237 |
|
|
int (*ypserv_ypresp_allfn)(u_long, char *, int, char *, int, void *); |
238 |
|
|
void *ypserv_ypresp_data; |
239 |
|
|
|
240 |
|
|
bool_t |
241 |
|
|
ypserv_xdr_ypresp_all_seq(XDR *xdrs, u_long *objp) |
242 |
|
|
{ |
243 |
|
|
struct ypresp_all out; |
244 |
|
|
u_long status; |
245 |
|
|
char *key, *val; |
246 |
|
|
int size; |
247 |
|
|
int done = 0; /* set to 1 when the user does not want more data */ |
248 |
|
|
bool_t rc = TRUE; /* FALSE at the end of loop signals failure */ |
249 |
|
|
|
250 |
|
|
memset(&out, 0, sizeof out); |
251 |
|
|
while (rc && !done) { |
252 |
|
|
rc = FALSE; |
253 |
|
|
if (!xdr_ypresp_all(xdrs, &out)) { |
254 |
|
|
*objp = (u_long)YP_YPERR; |
255 |
|
|
goto fail; |
256 |
|
|
} |
257 |
|
|
if (out.more == 0) |
258 |
|
|
goto fail; |
259 |
|
|
status = out.ypresp_all_u.val.stat; |
260 |
|
|
if (status == YP_TRUE) { |
261 |
|
|
size = out.ypresp_all_u.val.key.keydat_len; |
262 |
|
|
if ((key = malloc(size + 1)) == NULL) { |
263 |
|
|
*objp = (u_long)YP_YPERR; |
264 |
|
|
goto fail; |
265 |
|
|
} |
266 |
|
|
(void)memcpy(key, out.ypresp_all_u.val.key.keydat_val, |
267 |
|
|
size); |
268 |
|
|
key[size] = '\0'; |
269 |
|
|
|
270 |
|
|
size = out.ypresp_all_u.val.val.valdat_len; |
271 |
|
|
if ((val = malloc(size + 1)) == NULL) { |
272 |
|
|
free(key); |
273 |
|
|
*objp = (u_long)YP_YPERR; |
274 |
|
|
goto fail; |
275 |
|
|
} |
276 |
|
|
(void)memcpy(val, out.ypresp_all_u.val.val.valdat_val, |
277 |
|
|
size); |
278 |
|
|
val[size] = '\0'; |
279 |
|
|
|
280 |
|
|
done = (*ypserv_ypresp_allfn)(status, key, |
281 |
|
|
out.ypresp_all_u.val.key.keydat_len, val, |
282 |
|
|
out.ypresp_all_u.val.val.valdat_len, ypserv_ypresp_data); |
283 |
|
|
free(key); |
284 |
|
|
free(val); |
285 |
|
|
} else |
286 |
|
|
done = 1; |
287 |
|
|
if (status != YP_NOMORE) |
288 |
|
|
*objp = status; |
289 |
|
|
rc = TRUE; |
290 |
|
|
fail: |
291 |
|
|
xdr_free(xdr_ypresp_all, (char *)&out); |
292 |
|
|
} |
293 |
|
|
return rc; |
294 |
|
|
} |
295 |
|
|
|
296 |
|
|
int |
297 |
|
|
yp_all_host(CLIENT *client, char *indomain, char *inmap, |
298 |
|
|
struct ypall_callback *incallback) |
299 |
|
|
{ |
300 |
|
|
struct ypreq_nokey yprnk; |
301 |
|
|
struct timeval tv; |
302 |
|
|
u_long status; |
303 |
|
|
|
304 |
|
|
tv.tv_sec = _yplib_host_timeout; |
305 |
|
|
tv.tv_usec = 0; |
306 |
|
|
|
307 |
|
|
yprnk.domain = indomain; |
308 |
|
|
yprnk.map = inmap; |
309 |
|
|
ypserv_ypresp_allfn = incallback->foreach; |
310 |
|
|
ypserv_ypresp_data = (void *)incallback->data; |
311 |
|
|
|
312 |
|
|
(void) clnt_call(client, YPPROC_ALL, |
313 |
|
|
xdr_ypreq_nokey, &yprnk, ypserv_xdr_ypresp_all_seq, &status, tv); |
314 |
|
|
if (status != YP_FALSE) |
315 |
|
|
return ypprot_err(status); |
316 |
|
|
return 0; |
317 |
|
|
} |
318 |
|
|
|
319 |
|
|
int |
320 |
|
|
yp_order_host(CLIENT *client, char *indomain, char *inmap, u_int32_t *outorder) |
321 |
|
|
{ |
322 |
|
|
struct ypresp_order ypro; |
323 |
|
|
struct ypreq_nokey yprnk; |
324 |
|
|
struct timeval tv; |
325 |
|
|
int r; |
326 |
|
|
|
327 |
|
|
tv.tv_sec = _yplib_host_timeout; |
328 |
|
|
tv.tv_usec = 0; |
329 |
|
|
|
330 |
|
|
yprnk.domain = indomain; |
331 |
|
|
yprnk.map = inmap; |
332 |
|
|
|
333 |
|
|
memset(&ypro, 0, sizeof ypro); |
334 |
|
|
|
335 |
|
|
r = clnt_call(client, YPPROC_ORDER, |
336 |
|
|
xdr_ypreq_nokey, &yprnk, xdr_ypresp_order, &ypro, tv); |
337 |
|
|
if (r != RPC_SUCCESS) |
338 |
|
|
clnt_perror(client, "yp_order_host: clnt_call"); |
339 |
|
|
*outorder = ypro.ordernum; |
340 |
|
|
xdr_free(xdr_ypresp_order, (char *)&ypro); |
341 |
|
|
return ypprot_err(ypro.stat); |
342 |
|
|
} |
343 |
|
|
|
344 |
|
|
int |
345 |
|
|
yp_master_host(CLIENT *client, char *indomain, char *inmap, char **outname) |
346 |
|
|
{ |
347 |
|
|
struct ypresp_master yprm; |
348 |
|
|
struct ypreq_nokey yprnk; |
349 |
|
|
struct timeval tv; |
350 |
|
|
int r; |
351 |
|
|
|
352 |
|
|
tv.tv_sec = _yplib_host_timeout; |
353 |
|
|
tv.tv_usec = 0; |
354 |
|
|
yprnk.domain = indomain; |
355 |
|
|
yprnk.map = inmap; |
356 |
|
|
|
357 |
|
|
memset(&yprm, 0, sizeof yprm); |
358 |
|
|
|
359 |
|
|
r = clnt_call(client, YPPROC_MASTER, |
360 |
|
|
xdr_ypreq_nokey, &yprnk, xdr_ypresp_master, &yprm, tv); |
361 |
|
|
if (r != RPC_SUCCESS) |
362 |
|
|
clnt_perror(client, "yp_master: clnt_call"); |
363 |
|
|
if (!(r = ypprot_err(yprm.stat))) |
364 |
|
|
*outname = strdup(yprm.peer); |
365 |
|
|
xdr_free(xdr_ypresp_master, (char *)&yprm); |
366 |
|
|
return r; |
367 |
|
|
} |
368 |
|
|
|
369 |
|
|
int |
370 |
|
|
yp_maplist_host(CLIENT *client, char *indomain, struct ypmaplist **outmaplist) |
371 |
|
|
{ |
372 |
|
|
struct ypresp_maplist ypml; |
373 |
|
|
struct timeval tv; |
374 |
|
|
int r; |
375 |
|
|
|
376 |
|
|
tv.tv_sec = _yplib_host_timeout; |
377 |
|
|
tv.tv_usec = 0; |
378 |
|
|
|
379 |
|
|
memset(&ypml, 0, sizeof ypml); |
380 |
|
|
|
381 |
|
|
r = clnt_call(client, YPPROC_MAPLIST, |
382 |
|
|
xdr_domainname, &indomain, xdr_ypresp_maplist, &ypml, tv); |
383 |
|
|
if (r != RPC_SUCCESS) |
384 |
|
|
clnt_perror(client, "yp_maplist: clnt_call"); |
385 |
|
|
*outmaplist = ypml.maps; |
386 |
|
|
/* NO: xdr_free(xdr_ypresp_maplist, &ypml);*/ |
387 |
|
|
return ypprot_err(ypml.stat); |
388 |
|
|
} |