1/*
2 * Copyright (c) 1995
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
| 1/*
2 * Copyright (c) 1995
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
|
34__FBSDID("$FreeBSD: head/libexec/ypxfr/ypxfr_main.c 228600 2011-12-16 22:05:10Z dim $");
| 34__FBSDID("$FreeBSD: head/libexec/ypxfr/ypxfr_main.c 283844 2015-05-31 22:20:36Z rodrigc $");
|
35
36#include <errno.h>
37#include <stdio.h>
38#include <stdlib.h>
39#include <string.h>
40#include <syslog.h>
41#include <unistd.h>
42#include <sys/types.h>
43#include <sys/param.h>
44#include <sys/socket.h>
45#include <netinet/in.h>
46#include <arpa/inet.h>
47#include <rpc/rpc.h>
48#include <rpc/clnt.h>
49#include <rpcsvc/yp.h>
50#include <rpcsvc/ypclnt.h>
51#include <rpcsvc/ypxfrd.h>
52#include "ypxfr_extern.h"
53
54char *progname = "ypxfr";
55char *yp_dir = _PATH_YP;
56int _rpcpmstart = 0;
57int ypxfr_use_yplib = 0; /* Assume the worst. */
58int ypxfr_clear = 1;
59int ypxfr_prognum = 0;
60struct sockaddr_in ypxfr_callback_addr;
61struct yppushresp_xfr ypxfr_resp;
62DB *dbp;
63
64static void
65ypxfr_exit(ypxfrstat retval, char *temp)
66{
67 CLIENT *clnt;
68 int sock = RPC_ANYSOCK;
69 struct timeval timeout;
70
71 /* Clean up no matter what happened previously. */
72 if (temp != NULL) {
73 if (dbp != NULL)
74 (void)(dbp->close)(dbp);
75 if (unlink(temp) == -1) {
76 yp_error("failed to unlink %s",strerror(errno));
77 }
78 }
79
80 if (ypxfr_prognum) {
81 timeout.tv_sec = 20;
82 timeout.tv_usec = 0;
83
84 if ((clnt = clntudp_create(&ypxfr_callback_addr, ypxfr_prognum,
85 1, timeout, &sock)) == NULL) {
86 yp_error("%s", clnt_spcreateerror("failed to "
87 "establish callback handle"));
88 exit(1);
89 }
90
91 ypxfr_resp.status = (yppush_status)retval;
92
93 if (yppushproc_xfrresp_1(&ypxfr_resp, clnt) == NULL) {
94 yp_error("%s", clnt_sperror(clnt, "callback failed"));
95 clnt_destroy(clnt);
96 exit(1);
97 }
98 clnt_destroy(clnt);
99 } else {
100 yp_error("Exiting: %s", ypxfrerr_string(retval));
101 }
102
103 exit(0);
104}
105
106static void
107usage(void)
108{
109 if (_rpcpmstart) {
110 ypxfr_exit(YPXFR_BADARGS,NULL);
111 } else {
112 fprintf(stderr, "%s\n%s\n%s\n",
113 "usage: ypxfr [-f] [-c] [-d target domain] [-h source host]",
114 " [-s source domain] [-p path]",
115 " [-C taskid program-number ipaddr port] mapname");
116 exit(1);
117 }
118}
119
120int
121ypxfr_foreach(int status, char *key, int keylen, char *val, int vallen,
122 char *data)
123{
124 DBT dbkey, dbval;
125
126 if (status != YP_TRUE)
127 return (status);
128
129 /*
130 * XXX Do not attempt to write zero-length keys or
131 * data into a Berkeley DB hash database. It causes a
132 * strange failure mode where sequential searches get
133 * caught in an infinite loop.
134 */
135 if (keylen) {
136 dbkey.data = key;
137 dbkey.size = keylen;
138 } else {
139 dbkey.data = "";
140 dbkey.size = 1;
141 }
142 if (vallen) {
143 dbval.data = val;
144 dbval.size = vallen;
145 } else {
146 dbval.data = "";
147 dbval.size = 1;
148 }
149
150 if (yp_put_record(dbp, &dbkey, &dbval, 0) != YP_TRUE)
151 return(yp_errno);
152
153 return (0);
154}
155
156int
157main(int argc, char *argv[])
158{
159 int ch;
160 int ypxfr_force = 0;
161 char *ypxfr_dest_domain = NULL;
162 char *ypxfr_source_host = NULL;
163 char *ypxfr_source_domain = NULL;
164 char *ypxfr_local_domain = NULL;
165 char *ypxfr_master = NULL;
166 unsigned long ypxfr_order = -1, ypxfr_skew_check = -1;
167 char *ypxfr_mapname = NULL;
168 int ypxfr_args = 0;
169 char ypxfr_temp_map[MAXPATHLEN + 2];
170 char tempmap[MAXPATHLEN + 2];
171 char buf[MAXPATHLEN + 2];
172 DBT key, data;
173 int remoteport;
174 int interdom = 0;
175 int secure = 0;
176
177 debug = 1;
178
179 if (!isatty(fileno(stderr))) {
180 openlog("ypxfr", LOG_PID, LOG_DAEMON);
181 _rpcpmstart = 1;
182 }
183
184 if (argc < 2)
185 usage();
186
187 while ((ch = getopt(argc, argv, "fcd:h:s:p:C:")) != -1) {
188 int my_optind;
189 switch (ch) {
190 case 'f':
191 ypxfr_force++;
192 ypxfr_args++;
193 break;
194 case 'c':
195 ypxfr_clear = 0;
196 ypxfr_args++;
197 break;
198 case 'd':
199 ypxfr_dest_domain = optarg;
200 ypxfr_args += 2;
201 break;
202 case 'h':
203 ypxfr_source_host = optarg;
204 ypxfr_args += 2;
205 break;
206 case 's':
207 ypxfr_source_domain = optarg;
208 ypxfr_args += 2;
209 break;
210 case 'p':
211 yp_dir = optarg;
212 ypxfr_args += 2;
213 break;
214 case 'C':
215 /*
216 * Whoever decided that the -C flag should take
217 * four arguments is a twit.
218 */
219 my_optind = optind - 1;
220 if (argv[my_optind] == NULL || !strlen(argv[my_optind])) {
221 yp_error("transaction ID not specified");
222 usage();
223 }
224 ypxfr_resp.transid = atol(argv[my_optind]);
225 my_optind++;
226 if (argv[my_optind] == NULL || !strlen(argv[my_optind])) {
227 yp_error("RPC program number not specified");
228 usage();
229 }
230 ypxfr_prognum = atol(argv[my_optind]);
231 my_optind++;
232 if (argv[my_optind] == NULL || !strlen(argv[my_optind])) {
233 yp_error("address not specified");
234 usage();
235 }
236 if (!inet_aton(argv[my_optind], &ypxfr_callback_addr.sin_addr)) {
237 yp_error("failed to convert '%s' to IP addr",
238 argv[my_optind]);
239 exit(1);
240 }
241 my_optind++;
242 if (argv[my_optind] == NULL || !strlen(argv[my_optind])) {
243 yp_error("port not specified");
244 usage();
245 }
246 ypxfr_callback_addr.sin_port = htons((u_short)atoi(argv[my_optind]));
247 ypxfr_args += 5;
248 break;
249 default:
250 usage();
251 break;
252 }
253 }
254
255 ypxfr_mapname = argv[ypxfr_args + 1];
256
257 if (ypxfr_mapname == NULL) {
258 yp_error("no map name specified");
259 usage();
260 }
261
262 /* Always the case. */
263 ypxfr_callback_addr.sin_family = AF_INET;
264
265 /* Determine if local NIS client facilities are turned on. */
266 if (!yp_get_default_domain(&ypxfr_local_domain) &&
267 _yp_check(&ypxfr_local_domain))
268 ypxfr_use_yplib = 1;
269
270 /*
271 * If no destination domain is specified, assume that the
272 * local default domain is to be used and try to obtain it.
273 * Fails if NIS client facilities are turned off.
274 */
275 if (ypxfr_dest_domain == NULL) {
276 if (ypxfr_use_yplib) {
277 yp_get_default_domain(&ypxfr_dest_domain);
278 } else {
279 yp_error("no destination domain specified and \
280the local domain name isn't set");
281 ypxfr_exit(YPXFR_BADARGS,NULL);
282 }
283 }
284
285 /*
286 * If a source domain is not specified, assume it to
287 * be the same as the destination domain.
288 */
289 if (ypxfr_source_domain == NULL) {
290 ypxfr_source_domain = ypxfr_dest_domain;
291 }
292
293 /*
294 * If the source host is not specified, assume it to be the
295 * master for the specified map. If local NIS client facilities
296 * are turned on, we can figure this out using yp_master().
297 * If not, we have to see if a local copy of the map exists
298 * and extract its YP_MASTER_NAME record. If _that_ fails,
299 * we are stuck and must ask the user for more information.
300 */
301 if (ypxfr_source_host == NULL) {
302 if (!ypxfr_use_yplib) {
303 /*
304 * Double whammy: NIS isn't turned on and the user
305 * didn't specify a source host.
306 */
307 char *dptr;
308 key.data = "YP_MASTER_NAME";
309 key.size = sizeof("YP_MASTER_NAME") - 1;
310
311 if (yp_get_record(ypxfr_dest_domain, ypxfr_mapname,
312 &key, &data, 1) != YP_TRUE) {
313 yp_error("no source host specified");
314 ypxfr_exit(YPXFR_BADARGS,NULL);
315 }
316 dptr = data.data;
317 dptr[data.size] = '\0';
318 ypxfr_master = ypxfr_source_host = strdup(dptr);
319 }
320 } else {
321 if (ypxfr_use_yplib)
322 ypxfr_use_yplib = 0;
323 }
324
325 if (ypxfr_master == NULL) {
326 if ((ypxfr_master = ypxfr_get_master(ypxfr_source_domain,
327 ypxfr_mapname,
328 ypxfr_source_host,
329 ypxfr_use_yplib)) == NULL) {
330 yp_error("failed to find master of %s in domain %s: %s",
331 ypxfr_mapname, ypxfr_source_domain,
332 ypxfrerr_string((ypxfrstat)yp_errno));
333 ypxfr_exit(YPXFR_MADDR,NULL);
334 }
335 }
336
337 /*
338 * If we got here and ypxfr_source_host is still undefined,
339 * it means we had to resort to using yp_master() to find the
340 * master server for the map. The source host and master should
341 * be identical.
342 */
343 if (ypxfr_source_host == NULL)
344 ypxfr_source_host = ypxfr_master;
345
346 /*
347 * Don't talk to ypservs on unprivileged ports.
348 */
349 remoteport = getrpcport(ypxfr_source_host, YPPROG, YPVERS, IPPROTO_UDP);
350 if (remoteport >= IPPORT_RESERVED) {
351 yp_error("ypserv on %s not running on reserved port",
352 ypxfr_source_host);
353 ypxfr_exit(YPXFR_REFUSED, NULL);
354 }
355
356 if ((ypxfr_order = ypxfr_get_order(ypxfr_source_domain,
357 ypxfr_mapname,
358 ypxfr_master, 0)) == 0) {
359 yp_error("failed to get order number of %s: %s",
| 35
36#include <errno.h>
37#include <stdio.h>
38#include <stdlib.h>
39#include <string.h>
40#include <syslog.h>
41#include <unistd.h>
42#include <sys/types.h>
43#include <sys/param.h>
44#include <sys/socket.h>
45#include <netinet/in.h>
46#include <arpa/inet.h>
47#include <rpc/rpc.h>
48#include <rpc/clnt.h>
49#include <rpcsvc/yp.h>
50#include <rpcsvc/ypclnt.h>
51#include <rpcsvc/ypxfrd.h>
52#include "ypxfr_extern.h"
53
54char *progname = "ypxfr";
55char *yp_dir = _PATH_YP;
56int _rpcpmstart = 0;
57int ypxfr_use_yplib = 0; /* Assume the worst. */
58int ypxfr_clear = 1;
59int ypxfr_prognum = 0;
60struct sockaddr_in ypxfr_callback_addr;
61struct yppushresp_xfr ypxfr_resp;
62DB *dbp;
63
64static void
65ypxfr_exit(ypxfrstat retval, char *temp)
66{
67 CLIENT *clnt;
68 int sock = RPC_ANYSOCK;
69 struct timeval timeout;
70
71 /* Clean up no matter what happened previously. */
72 if (temp != NULL) {
73 if (dbp != NULL)
74 (void)(dbp->close)(dbp);
75 if (unlink(temp) == -1) {
76 yp_error("failed to unlink %s",strerror(errno));
77 }
78 }
79
80 if (ypxfr_prognum) {
81 timeout.tv_sec = 20;
82 timeout.tv_usec = 0;
83
84 if ((clnt = clntudp_create(&ypxfr_callback_addr, ypxfr_prognum,
85 1, timeout, &sock)) == NULL) {
86 yp_error("%s", clnt_spcreateerror("failed to "
87 "establish callback handle"));
88 exit(1);
89 }
90
91 ypxfr_resp.status = (yppush_status)retval;
92
93 if (yppushproc_xfrresp_1(&ypxfr_resp, clnt) == NULL) {
94 yp_error("%s", clnt_sperror(clnt, "callback failed"));
95 clnt_destroy(clnt);
96 exit(1);
97 }
98 clnt_destroy(clnt);
99 } else {
100 yp_error("Exiting: %s", ypxfrerr_string(retval));
101 }
102
103 exit(0);
104}
105
106static void
107usage(void)
108{
109 if (_rpcpmstart) {
110 ypxfr_exit(YPXFR_BADARGS,NULL);
111 } else {
112 fprintf(stderr, "%s\n%s\n%s\n",
113 "usage: ypxfr [-f] [-c] [-d target domain] [-h source host]",
114 " [-s source domain] [-p path]",
115 " [-C taskid program-number ipaddr port] mapname");
116 exit(1);
117 }
118}
119
120int
121ypxfr_foreach(int status, char *key, int keylen, char *val, int vallen,
122 char *data)
123{
124 DBT dbkey, dbval;
125
126 if (status != YP_TRUE)
127 return (status);
128
129 /*
130 * XXX Do not attempt to write zero-length keys or
131 * data into a Berkeley DB hash database. It causes a
132 * strange failure mode where sequential searches get
133 * caught in an infinite loop.
134 */
135 if (keylen) {
136 dbkey.data = key;
137 dbkey.size = keylen;
138 } else {
139 dbkey.data = "";
140 dbkey.size = 1;
141 }
142 if (vallen) {
143 dbval.data = val;
144 dbval.size = vallen;
145 } else {
146 dbval.data = "";
147 dbval.size = 1;
148 }
149
150 if (yp_put_record(dbp, &dbkey, &dbval, 0) != YP_TRUE)
151 return(yp_errno);
152
153 return (0);
154}
155
156int
157main(int argc, char *argv[])
158{
159 int ch;
160 int ypxfr_force = 0;
161 char *ypxfr_dest_domain = NULL;
162 char *ypxfr_source_host = NULL;
163 char *ypxfr_source_domain = NULL;
164 char *ypxfr_local_domain = NULL;
165 char *ypxfr_master = NULL;
166 unsigned long ypxfr_order = -1, ypxfr_skew_check = -1;
167 char *ypxfr_mapname = NULL;
168 int ypxfr_args = 0;
169 char ypxfr_temp_map[MAXPATHLEN + 2];
170 char tempmap[MAXPATHLEN + 2];
171 char buf[MAXPATHLEN + 2];
172 DBT key, data;
173 int remoteport;
174 int interdom = 0;
175 int secure = 0;
176
177 debug = 1;
178
179 if (!isatty(fileno(stderr))) {
180 openlog("ypxfr", LOG_PID, LOG_DAEMON);
181 _rpcpmstart = 1;
182 }
183
184 if (argc < 2)
185 usage();
186
187 while ((ch = getopt(argc, argv, "fcd:h:s:p:C:")) != -1) {
188 int my_optind;
189 switch (ch) {
190 case 'f':
191 ypxfr_force++;
192 ypxfr_args++;
193 break;
194 case 'c':
195 ypxfr_clear = 0;
196 ypxfr_args++;
197 break;
198 case 'd':
199 ypxfr_dest_domain = optarg;
200 ypxfr_args += 2;
201 break;
202 case 'h':
203 ypxfr_source_host = optarg;
204 ypxfr_args += 2;
205 break;
206 case 's':
207 ypxfr_source_domain = optarg;
208 ypxfr_args += 2;
209 break;
210 case 'p':
211 yp_dir = optarg;
212 ypxfr_args += 2;
213 break;
214 case 'C':
215 /*
216 * Whoever decided that the -C flag should take
217 * four arguments is a twit.
218 */
219 my_optind = optind - 1;
220 if (argv[my_optind] == NULL || !strlen(argv[my_optind])) {
221 yp_error("transaction ID not specified");
222 usage();
223 }
224 ypxfr_resp.transid = atol(argv[my_optind]);
225 my_optind++;
226 if (argv[my_optind] == NULL || !strlen(argv[my_optind])) {
227 yp_error("RPC program number not specified");
228 usage();
229 }
230 ypxfr_prognum = atol(argv[my_optind]);
231 my_optind++;
232 if (argv[my_optind] == NULL || !strlen(argv[my_optind])) {
233 yp_error("address not specified");
234 usage();
235 }
236 if (!inet_aton(argv[my_optind], &ypxfr_callback_addr.sin_addr)) {
237 yp_error("failed to convert '%s' to IP addr",
238 argv[my_optind]);
239 exit(1);
240 }
241 my_optind++;
242 if (argv[my_optind] == NULL || !strlen(argv[my_optind])) {
243 yp_error("port not specified");
244 usage();
245 }
246 ypxfr_callback_addr.sin_port = htons((u_short)atoi(argv[my_optind]));
247 ypxfr_args += 5;
248 break;
249 default:
250 usage();
251 break;
252 }
253 }
254
255 ypxfr_mapname = argv[ypxfr_args + 1];
256
257 if (ypxfr_mapname == NULL) {
258 yp_error("no map name specified");
259 usage();
260 }
261
262 /* Always the case. */
263 ypxfr_callback_addr.sin_family = AF_INET;
264
265 /* Determine if local NIS client facilities are turned on. */
266 if (!yp_get_default_domain(&ypxfr_local_domain) &&
267 _yp_check(&ypxfr_local_domain))
268 ypxfr_use_yplib = 1;
269
270 /*
271 * If no destination domain is specified, assume that the
272 * local default domain is to be used and try to obtain it.
273 * Fails if NIS client facilities are turned off.
274 */
275 if (ypxfr_dest_domain == NULL) {
276 if (ypxfr_use_yplib) {
277 yp_get_default_domain(&ypxfr_dest_domain);
278 } else {
279 yp_error("no destination domain specified and \
280the local domain name isn't set");
281 ypxfr_exit(YPXFR_BADARGS,NULL);
282 }
283 }
284
285 /*
286 * If a source domain is not specified, assume it to
287 * be the same as the destination domain.
288 */
289 if (ypxfr_source_domain == NULL) {
290 ypxfr_source_domain = ypxfr_dest_domain;
291 }
292
293 /*
294 * If the source host is not specified, assume it to be the
295 * master for the specified map. If local NIS client facilities
296 * are turned on, we can figure this out using yp_master().
297 * If not, we have to see if a local copy of the map exists
298 * and extract its YP_MASTER_NAME record. If _that_ fails,
299 * we are stuck and must ask the user for more information.
300 */
301 if (ypxfr_source_host == NULL) {
302 if (!ypxfr_use_yplib) {
303 /*
304 * Double whammy: NIS isn't turned on and the user
305 * didn't specify a source host.
306 */
307 char *dptr;
308 key.data = "YP_MASTER_NAME";
309 key.size = sizeof("YP_MASTER_NAME") - 1;
310
311 if (yp_get_record(ypxfr_dest_domain, ypxfr_mapname,
312 &key, &data, 1) != YP_TRUE) {
313 yp_error("no source host specified");
314 ypxfr_exit(YPXFR_BADARGS,NULL);
315 }
316 dptr = data.data;
317 dptr[data.size] = '\0';
318 ypxfr_master = ypxfr_source_host = strdup(dptr);
319 }
320 } else {
321 if (ypxfr_use_yplib)
322 ypxfr_use_yplib = 0;
323 }
324
325 if (ypxfr_master == NULL) {
326 if ((ypxfr_master = ypxfr_get_master(ypxfr_source_domain,
327 ypxfr_mapname,
328 ypxfr_source_host,
329 ypxfr_use_yplib)) == NULL) {
330 yp_error("failed to find master of %s in domain %s: %s",
331 ypxfr_mapname, ypxfr_source_domain,
332 ypxfrerr_string((ypxfrstat)yp_errno));
333 ypxfr_exit(YPXFR_MADDR,NULL);
334 }
335 }
336
337 /*
338 * If we got here and ypxfr_source_host is still undefined,
339 * it means we had to resort to using yp_master() to find the
340 * master server for the map. The source host and master should
341 * be identical.
342 */
343 if (ypxfr_source_host == NULL)
344 ypxfr_source_host = ypxfr_master;
345
346 /*
347 * Don't talk to ypservs on unprivileged ports.
348 */
349 remoteport = getrpcport(ypxfr_source_host, YPPROG, YPVERS, IPPROTO_UDP);
350 if (remoteport >= IPPORT_RESERVED) {
351 yp_error("ypserv on %s not running on reserved port",
352 ypxfr_source_host);
353 ypxfr_exit(YPXFR_REFUSED, NULL);
354 }
355
356 if ((ypxfr_order = ypxfr_get_order(ypxfr_source_domain,
357 ypxfr_mapname,
358 ypxfr_master, 0)) == 0) {
359 yp_error("failed to get order number of %s: %s",
|
360 ypxfr_mapname, yp_errno == YPXFR_SUCC ?
| 360 ypxfr_mapname, yp_errno == YP_TRUE ?
|
361 "map has order 0" :
362 ypxfrerr_string((ypxfrstat)yp_errno));
363 ypxfr_exit(YPXFR_YPERR,NULL);
364 }
365
366 if (ypxfr_match(ypxfr_master, ypxfr_source_domain, ypxfr_mapname,
367 "YP_INTERDOMAIN", sizeof("YP_INTERDOMAIN") - 1))
368 interdom++;
369
370 if (ypxfr_match(ypxfr_master, ypxfr_source_domain, ypxfr_mapname,
371 "YP_SECURE", sizeof("YP_SECURE") - 1))
372 secure++;
373
374 key.data = "YP_LAST_MODIFIED";
375 key.size = sizeof("YP_LAST_MODIFIED") - 1;
376
377 /* The order number is immaterial when the 'force' flag is set. */
378
379 if (!ypxfr_force) {
380 int ignore = 0;
381 if (yp_get_record(ypxfr_dest_domain,ypxfr_mapname,&key,&data,1) != YP_TRUE) {
382 switch (yp_errno) {
383 case YP_NOKEY:
384 ypxfr_exit(YPXFR_FORCE,NULL);
385 break;
386 case YP_NOMAP:
387 /*
388 * If the map doesn't exist, we're
389 * creating it. Ignore the error.
390 */
391 ignore++;
392 break;
393 case YP_BADDB:
394 default:
395 ypxfr_exit(YPXFR_DBM,NULL);
396 break;
397 }
398 }
399 if (!ignore && ypxfr_order <= atoi(data.data))
400 ypxfr_exit(YPXFR_AGE, NULL);
401
402 }
403
404 /* Construct a temporary map file name */
405 snprintf(tempmap, sizeof(tempmap), "%s.%d",ypxfr_mapname, getpid());
406 snprintf(ypxfr_temp_map, sizeof(ypxfr_temp_map), "%s/%s/%s", yp_dir,
407 ypxfr_dest_domain, tempmap);
408
409 if ((remoteport = getrpcport(ypxfr_source_host, YPXFRD_FREEBSD_PROG,
410 YPXFRD_FREEBSD_VERS, IPPROTO_TCP))) {
411
412 /* Don't talk to rpc.ypxfrds on unprovileged ports. */
413 if (remoteport >= IPPORT_RESERVED) {
414 yp_error("rpc.ypxfrd on %s not using privileged port",
415 ypxfr_source_host);
416 ypxfr_exit(YPXFR_REFUSED, NULL);
417 }
418
419 /* Try to send using ypxfrd. If it fails, use old method. */
420 if (!ypxfrd_get_map(ypxfr_source_host, ypxfr_mapname,
421 ypxfr_source_domain, ypxfr_temp_map))
422 goto leave;
423 }
424
425 /* Open the temporary map read/write. */
426 if ((dbp = yp_open_db_rw(ypxfr_dest_domain, tempmap, 0)) == NULL) {
427 yp_error("failed to open temporary map file");
428 ypxfr_exit(YPXFR_DBM,NULL);
429 }
430
431 /*
432 * Fill in the keys we already know, such as the order number,
433 * master name, input file name (we actually make up a bogus
434 * name for that) and output file name.
435 */
436 snprintf(buf, sizeof(buf), "%lu", ypxfr_order);
437 data.data = buf;
438 data.size = strlen(buf);
439
440 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
441 yp_error("failed to write order number to database");
442 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
443 }
444
445 key.data = "YP_MASTER_NAME";
446 key.size = sizeof("YP_MASTER_NAME") - 1;
447 data.data = ypxfr_master;
448 data.size = strlen(ypxfr_master);
449
450 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
451 yp_error("failed to write master name to database");
452 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
453 }
454
455 key.data = "YP_DOMAIN_NAME";
456 key.size = sizeof("YP_DOMAIN_NAME") - 1;
457 data.data = ypxfr_dest_domain;
458 data.size = strlen(ypxfr_dest_domain);
459
460 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
461 yp_error("failed to write domain name to database");
462 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
463 }
464
465 snprintf (buf, sizeof(buf), "%s:%s", ypxfr_source_host, ypxfr_mapname);
466
467 key.data = "YP_INPUT_NAME";
468 key.size = sizeof("YP_INPUT_NAME") - 1;
469 data.data = &buf;
470 data.size = strlen(buf);
471
472 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
473 yp_error("failed to write input name to database");
474 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
475
476 }
477
478 snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, ypxfr_dest_domain,
479 ypxfr_mapname);
480
481 key.data = "YP_OUTPUT_NAME";
482 key.size = sizeof("YP_OUTPUT_NAME") - 1;
483 data.data = &buf;
484 data.size = strlen(buf);
485
486 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
487 yp_error("failed to write output name to database");
488 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
489 }
490
491 if (interdom) {
492 key.data = "YP_INTERDOMAIN";
493 key.size = sizeof("YP_INTERDOMAIN") - 1;
494 data.data = "";
495 data.size = 0;
496
497 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
498 yp_error("failed to add interdomain flag to database");
499 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
500 }
501 }
502
503 if (secure) {
504 key.data = "YP_SECURE";
505 key.size = sizeof("YP_SECURE") - 1;
506 data.data = "";
507 data.size = 0;
508
509 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
510 yp_error("failed to add secure flag to database");
511 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
512 }
513 }
514
515 /* Now suck over the contents of the map from the master. */
516
517 if (ypxfr_get_map(ypxfr_mapname,ypxfr_source_domain,
518 ypxfr_source_host, ypxfr_foreach)){
519 yp_error("failed to retrieve map from source host");
520 ypxfr_exit(YPXFR_YPERR,ypxfr_temp_map);
521 }
522
523 (void)(dbp->close)(dbp);
524 dbp = NULL; /* <- yes, it seems this is necessary. */
525
526leave:
527
528 snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, ypxfr_dest_domain,
529 ypxfr_mapname);
530
531 /* Peek at the order number again and check for skew. */
532 if ((ypxfr_skew_check = ypxfr_get_order(ypxfr_source_domain,
533 ypxfr_mapname,
534 ypxfr_master, 0)) == 0) {
535 yp_error("failed to get order number of %s: %s",
| 361 "map has order 0" :
362 ypxfrerr_string((ypxfrstat)yp_errno));
363 ypxfr_exit(YPXFR_YPERR,NULL);
364 }
365
366 if (ypxfr_match(ypxfr_master, ypxfr_source_domain, ypxfr_mapname,
367 "YP_INTERDOMAIN", sizeof("YP_INTERDOMAIN") - 1))
368 interdom++;
369
370 if (ypxfr_match(ypxfr_master, ypxfr_source_domain, ypxfr_mapname,
371 "YP_SECURE", sizeof("YP_SECURE") - 1))
372 secure++;
373
374 key.data = "YP_LAST_MODIFIED";
375 key.size = sizeof("YP_LAST_MODIFIED") - 1;
376
377 /* The order number is immaterial when the 'force' flag is set. */
378
379 if (!ypxfr_force) {
380 int ignore = 0;
381 if (yp_get_record(ypxfr_dest_domain,ypxfr_mapname,&key,&data,1) != YP_TRUE) {
382 switch (yp_errno) {
383 case YP_NOKEY:
384 ypxfr_exit(YPXFR_FORCE,NULL);
385 break;
386 case YP_NOMAP:
387 /*
388 * If the map doesn't exist, we're
389 * creating it. Ignore the error.
390 */
391 ignore++;
392 break;
393 case YP_BADDB:
394 default:
395 ypxfr_exit(YPXFR_DBM,NULL);
396 break;
397 }
398 }
399 if (!ignore && ypxfr_order <= atoi(data.data))
400 ypxfr_exit(YPXFR_AGE, NULL);
401
402 }
403
404 /* Construct a temporary map file name */
405 snprintf(tempmap, sizeof(tempmap), "%s.%d",ypxfr_mapname, getpid());
406 snprintf(ypxfr_temp_map, sizeof(ypxfr_temp_map), "%s/%s/%s", yp_dir,
407 ypxfr_dest_domain, tempmap);
408
409 if ((remoteport = getrpcport(ypxfr_source_host, YPXFRD_FREEBSD_PROG,
410 YPXFRD_FREEBSD_VERS, IPPROTO_TCP))) {
411
412 /* Don't talk to rpc.ypxfrds on unprovileged ports. */
413 if (remoteport >= IPPORT_RESERVED) {
414 yp_error("rpc.ypxfrd on %s not using privileged port",
415 ypxfr_source_host);
416 ypxfr_exit(YPXFR_REFUSED, NULL);
417 }
418
419 /* Try to send using ypxfrd. If it fails, use old method. */
420 if (!ypxfrd_get_map(ypxfr_source_host, ypxfr_mapname,
421 ypxfr_source_domain, ypxfr_temp_map))
422 goto leave;
423 }
424
425 /* Open the temporary map read/write. */
426 if ((dbp = yp_open_db_rw(ypxfr_dest_domain, tempmap, 0)) == NULL) {
427 yp_error("failed to open temporary map file");
428 ypxfr_exit(YPXFR_DBM,NULL);
429 }
430
431 /*
432 * Fill in the keys we already know, such as the order number,
433 * master name, input file name (we actually make up a bogus
434 * name for that) and output file name.
435 */
436 snprintf(buf, sizeof(buf), "%lu", ypxfr_order);
437 data.data = buf;
438 data.size = strlen(buf);
439
440 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
441 yp_error("failed to write order number to database");
442 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
443 }
444
445 key.data = "YP_MASTER_NAME";
446 key.size = sizeof("YP_MASTER_NAME") - 1;
447 data.data = ypxfr_master;
448 data.size = strlen(ypxfr_master);
449
450 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
451 yp_error("failed to write master name to database");
452 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
453 }
454
455 key.data = "YP_DOMAIN_NAME";
456 key.size = sizeof("YP_DOMAIN_NAME") - 1;
457 data.data = ypxfr_dest_domain;
458 data.size = strlen(ypxfr_dest_domain);
459
460 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
461 yp_error("failed to write domain name to database");
462 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
463 }
464
465 snprintf (buf, sizeof(buf), "%s:%s", ypxfr_source_host, ypxfr_mapname);
466
467 key.data = "YP_INPUT_NAME";
468 key.size = sizeof("YP_INPUT_NAME") - 1;
469 data.data = &buf;
470 data.size = strlen(buf);
471
472 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
473 yp_error("failed to write input name to database");
474 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
475
476 }
477
478 snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, ypxfr_dest_domain,
479 ypxfr_mapname);
480
481 key.data = "YP_OUTPUT_NAME";
482 key.size = sizeof("YP_OUTPUT_NAME") - 1;
483 data.data = &buf;
484 data.size = strlen(buf);
485
486 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
487 yp_error("failed to write output name to database");
488 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
489 }
490
491 if (interdom) {
492 key.data = "YP_INTERDOMAIN";
493 key.size = sizeof("YP_INTERDOMAIN") - 1;
494 data.data = "";
495 data.size = 0;
496
497 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
498 yp_error("failed to add interdomain flag to database");
499 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
500 }
501 }
502
503 if (secure) {
504 key.data = "YP_SECURE";
505 key.size = sizeof("YP_SECURE") - 1;
506 data.data = "";
507 data.size = 0;
508
509 if (yp_put_record(dbp, &key, &data, 0) != YP_TRUE) {
510 yp_error("failed to add secure flag to database");
511 ypxfr_exit(YPXFR_DBM,ypxfr_temp_map);
512 }
513 }
514
515 /* Now suck over the contents of the map from the master. */
516
517 if (ypxfr_get_map(ypxfr_mapname,ypxfr_source_domain,
518 ypxfr_source_host, ypxfr_foreach)){
519 yp_error("failed to retrieve map from source host");
520 ypxfr_exit(YPXFR_YPERR,ypxfr_temp_map);
521 }
522
523 (void)(dbp->close)(dbp);
524 dbp = NULL; /* <- yes, it seems this is necessary. */
525
526leave:
527
528 snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, ypxfr_dest_domain,
529 ypxfr_mapname);
530
531 /* Peek at the order number again and check for skew. */
532 if ((ypxfr_skew_check = ypxfr_get_order(ypxfr_source_domain,
533 ypxfr_mapname,
534 ypxfr_master, 0)) == 0) {
535 yp_error("failed to get order number of %s: %s",
|
536 ypxfr_mapname, yp_errno == YPXFR_SUCC ?
| 536 ypxfr_mapname, yp_errno == YP_TRUE ?
|
537 "map has order 0" :
538 ypxfrerr_string((ypxfrstat)yp_errno));
539 ypxfr_exit(YPXFR_YPERR,ypxfr_temp_map);
540 }
541
542 if (ypxfr_order != ypxfr_skew_check)
543 ypxfr_exit(YPXFR_SKEW,ypxfr_temp_map);
544
545 /*
546 * Send a YPPROC_CLEAR to the local ypserv.
547 */
548 if (ypxfr_clear) {
549 char in = 0;
550 char *out = NULL;
551 int stat;
552 if ((stat = callrpc("localhost",YPPROG,YPVERS,YPPROC_CLEAR,
553 (xdrproc_t)xdr_void, (void *)&in,
554 (xdrproc_t)xdr_void, (void *)out)) != RPC_SUCCESS) {
555 yp_error("failed to send 'clear' to local ypserv: %s",
556 clnt_sperrno((enum clnt_stat) stat));
557 ypxfr_exit(YPXFR_CLEAR, ypxfr_temp_map);
558 }
559 }
560
561 /*
562 * Put the new map in place immediately. I'm not sure if the
563 * kernel does an unlink() and rename() atomically in the event
564 * that we move a new copy of a map over the top of an existing
565 * one, but there's less chance of a race condition happening
566 * than if we were to do the unlink() ourselves.
567 */
568 if (rename(ypxfr_temp_map, buf) == -1) {
569 yp_error("rename(%s,%s) failed: %s", ypxfr_temp_map, buf,
570 strerror(errno));
571 ypxfr_exit(YPXFR_FILE,NULL);
572 }
573
574 ypxfr_exit(YPXFR_SUCC,NULL);
575
576 return(1);
577}
| 537 "map has order 0" :
538 ypxfrerr_string((ypxfrstat)yp_errno));
539 ypxfr_exit(YPXFR_YPERR,ypxfr_temp_map);
540 }
541
542 if (ypxfr_order != ypxfr_skew_check)
543 ypxfr_exit(YPXFR_SKEW,ypxfr_temp_map);
544
545 /*
546 * Send a YPPROC_CLEAR to the local ypserv.
547 */
548 if (ypxfr_clear) {
549 char in = 0;
550 char *out = NULL;
551 int stat;
552 if ((stat = callrpc("localhost",YPPROG,YPVERS,YPPROC_CLEAR,
553 (xdrproc_t)xdr_void, (void *)&in,
554 (xdrproc_t)xdr_void, (void *)out)) != RPC_SUCCESS) {
555 yp_error("failed to send 'clear' to local ypserv: %s",
556 clnt_sperrno((enum clnt_stat) stat));
557 ypxfr_exit(YPXFR_CLEAR, ypxfr_temp_map);
558 }
559 }
560
561 /*
562 * Put the new map in place immediately. I'm not sure if the
563 * kernel does an unlink() and rename() atomically in the event
564 * that we move a new copy of a map over the top of an existing
565 * one, but there's less chance of a race condition happening
566 * than if we were to do the unlink() ourselves.
567 */
568 if (rename(ypxfr_temp_map, buf) == -1) {
569 yp_error("rename(%s,%s) failed: %s", ypxfr_temp_map, buf,
570 strerror(errno));
571 ypxfr_exit(YPXFR_FILE,NULL);
572 }
573
574 ypxfr_exit(YPXFR_SUCC,NULL);
575
576 return(1);
577}
|