3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
32 * $FreeBSD: src/usr.sbin/yppush/yppush_main.c,v 1.22 2006/08/16 12:58:41 thomas Exp $
43 #include <sys/socket.h>
44 #include <sys/fcntl.h>
46 #include <sys/param.h>
49 #include <rpc/pmap_clnt.h>
50 #include <rpcsvc/yp.h>
51 #include <rpcsvc/ypclnt.h>
52 #include "ypxfr_extern.h"
53 #include "yppush_extern.h"
55 char *progname = "yppush";
58 const char *yp_dir = _PATH_YP;
60 static char *yppush_mapname = NULL; /* Map to transfer. */
61 static char *yppush_domain = NULL; /* Domain in which map resides. */
62 static char *yppush_master = NULL; /* Master NIS server for said domain. */
63 static int skip_master = 0; /* Do not attempt to push map to master. */
64 static int verbose = 0; /* Toggle verbose mode. */
65 static unsigned long yppush_transid = 0;
66 static int yppush_timeout = 80; /* Default timeout. */
67 static int yppush_jobs = 1; /* Number of allowed concurrent jobs. */
68 static int yppush_running_jobs = 0; /* Number of currently running jobs. */
70 /* Structure for holding information about a running job. */
75 unsigned long prognum;
82 static struct jobs *yppush_joblist; /* Linked list of running jobs. */
83 static int yppush_svc_run(int);
86 * Local error messages.
89 yppusherr_string(int err)
93 return("transfer or callback timed out");
95 return("failed to contact ypserv");
97 return("no such host");
99 return("portmapper failure");
101 return("unknown error code");
106 * Report state of a job.
109 yppush_show_status(ypxfrstat status, unsigned long tid)
113 job = yppush_joblist;
115 while (job != NULL) {
122 yp_error("warning: received callback with invalid transaction ID: %lu",
128 yp_error("warning: received callback with duplicate transaction ID: %lu",
134 yp_error("checking return status: transaction ID: %lu",
138 if (status != YPXFR_SUCC || verbose) {
139 yp_error("transfer of map %s to server %s %s",
140 job->map, job->server, status == YPXFR_SUCC ?
141 "succeeded" : "failed");
142 yp_error("status returned by ypxfr: %s", status > YPXFR_AGE ?
143 yppusherr_string(status) :
144 ypxfrerr_string(status));
149 svc_unregister(job->prognum, 1);
151 yppush_running_jobs--;
160 int still_pending = 1;
162 /* Let all the information trickle in. */
163 while (!now && still_pending) {
164 jptr = yppush_joblist;
167 if (jptr->polled == 0) {
170 yp_error("%s has not responded",
174 yp_error("%s has responded",
181 yp_error("%d transfer%sstill pending",
183 still_pending > 1 ? "s " : " ");
184 if (yppush_svc_run (YPPUSH_RESPONSE_TIMEOUT) == 0) {
185 yp_error("timed out");
190 yp_error("all transfers complete");
196 /* All stats collected and reported -- kill all the stragglers. */
197 jptr = yppush_joblist;
200 yp_error("warning: exiting with transfer \
201 to %s (transid = %lu) still pending", jptr->server, jptr->tid);
202 svc_unregister(jptr->prognum, 1);
210 * Handler for 'normal' signals.
221 * Dispatch loop for callback RPC services.
225 * >0 request serviced
228 yppush_svc_run(int timeout_secs)
232 struct timeval timeout;
235 timeout.tv_sec = timeout_secs;
239 rc = select(svc_maxfd + 1, &readfds, NULL, NULL, &timeout);
244 yp_error("select failed: %s", strerror(errno));
247 yp_error("select() timed out");
250 svc_getreqset(&readfds);
257 * RPC service routines for callbacks.
260 yppushproc_null_1_svc(void *argp, struct svc_req *rqstp)
262 static char * result;
263 /* Do nothing -- RPC conventions call for all a null proc. */
264 return((void *) &result);
268 yppushproc_xfrresp_1_svc(yppushresp_xfr *argp, struct svc_req *rqstp)
270 static char * result;
271 yppush_show_status(argp->status, argp->transid);
272 return((void *) &result);
276 * Transmit a YPPROC_XFR request to ypserv.
279 yppush_send_xfr(struct jobs *job)
282 /* ypresp_xfr *resp; */
286 struct timeval timeout;
292 * The ypreq_xfr structure has a member of type map_parms,
293 * which seems to require the order number of the map.
294 * It isn't actually used at the other end (at least the
295 * FreeBSD ypserv doesn't use it) but we fill it in here
296 * for the sake of completeness.
298 key.data = "YP_LAST_MODIFIED";
299 key.size = sizeof ("YP_LAST_MODIFIED") - 1;
301 if (yp_get_record(yppush_domain, yppush_mapname, &key, &data,
303 yp_error("failed to read order number from %s: %s: %s",
304 yppush_mapname, yperr_string(yp_errno),
309 /* Fill in the request arguments */
310 req.map_parms.ordernum = atoi(data.data);
311 req.map_parms.domain = yppush_domain;
312 req.map_parms.peer = yppush_master;
313 req.map_parms.map = job->map;
314 req.transid = job->tid;
315 req.prog = job->prognum;
316 req.port = job->port;
318 /* Get a handle to the remote ypserv. */
319 if ((clnt = clnt_create(job->server, YPPROG, YPVERS, "udp")) == NULL) {
320 yp_error("%s: %s",job->server,clnt_spcreateerror("couldn't \
321 create udp handle to NIS server"));
322 switch (rpc_createerr.cf_stat) {
323 case RPC_UNKNOWNHOST:
324 job->stat = YPPUSH_NOHOST;
326 case RPC_PMAPFAILURE:
327 job->stat = YPPUSH_PMAP;
330 job->stat = YPPUSH_RPC;
337 * Reduce timeout to nothing since we may not
338 * get a response from ypserv and we don't want to block.
340 if (clnt_control(clnt, CLSET_TIMEOUT, (char *)&timeout) == FALSE)
341 yp_error("failed to set timeout on ypproc_xfr call");
343 /* Invoke the ypproc_xfr service. */
344 if (ypproc_xfr_2(&req, clnt) == NULL) {
345 clnt_geterr(clnt, &err);
346 if (err.re_status != RPC_SUCCESS &&
347 err.re_status != RPC_TIMEDOUT) {
348 yp_error("%s: %s", job->server, clnt_sperror(clnt,
350 job->stat = YPPUSH_YPSERV;
362 * Main driver function. Register the callback service, add the transfer
363 * request to the internal list, send the YPPROC_XFR request to ypserv
364 * do other magic things.
367 yp_push(char *server, char *map, unsigned long tid)
369 unsigned long prognum;
370 int sock = RPC_ANYSOCK;
374 /* Register the job in our linked list of jobs. */
376 /* First allocate job structure */
377 if ((job = (struct jobs *)malloc(sizeof (struct jobs))) == NULL) {
378 yp_error("malloc failed");
383 * Register the callback service on the first free transient
386 xprt = svcudp_create(sock);
387 for (prognum = 0x40000000; prognum < 0x5FFFFFFF; prognum++) {
388 if (svc_register(xprt, prognum, 1,
389 yppush_xfrrespprog_1, IPPROTO_UDP) == TRUE)
392 if (prognum == 0x5FFFFFFF) {
393 yp_error ("can't register yppush_xfrrespprog_1");
397 /* Initialize the info for this job. */
400 job->port = xprt->xp_port;
401 job->server = strdup(server);
402 job->map = strdup(map);
403 job->prognum = prognum;
405 job->next = yppush_joblist;
406 yppush_joblist = job;
409 yp_error("initiating transfer: %s -> %s (transid = %lu)",
410 yppush_mapname, server, tid);
414 * Send the XFR request to ypserv. We don't have to wait for
415 * a response here since we handle them asynchronously.
418 if (yppush_send_xfr(job)){
419 /* Transfer request blew up. */
420 yppush_show_status(job->stat ? job->stat :
421 YPPUSH_YPSERV,job->tid);
424 yp_error("%s has been called", server);
431 * Called for each entry in the ypservers map from yp_get_map(), which
432 * is our private yp_all() routine.
435 yppush_foreach(int status, char *key, int keylen, char *val, int vallen,
438 char server[YPMAXRECORD + 2];
440 if (status != YP_TRUE)
443 snprintf(server, sizeof(server), "%.*s", vallen, val);
444 if (skip_master && strcasecmp(server, yppush_master) == 0)
448 * Restrict the number of concurrent jobs: if yppush_jobs number
449 * of jobs have already been dispatched and are still pending,
450 * wait for one of them to finish so we can reuse its slot.
452 while (yppush_running_jobs >= yppush_jobs && (yppush_svc_run (yppush_timeout) > 0))
455 /* Cleared for takeoff: set everything in motion. */
456 if (yp_push(server, yppush_mapname, yppush_transid))
459 /* Bump the job counter and transaction ID. */
460 yppush_running_jobs++;
468 fprintf (stderr, "%s\n%s\n",
469 "usage: yppush [-d domain] [-t timeout] [-j #parallel jobs] [-h host]",
470 " [-p path] mapname");
475 * Entry point. (About time!)
478 main(int argc, char *argv[])
482 char myname[MAXHOSTNAMELEN];
485 struct hostlist *next;
487 struct hostlist *yppush_hostlist = NULL;
488 struct hostlist *tmp;
490 while ((ch = getopt(argc, argv, "d:j:p:h:t:v")) != -1) {
493 yppush_domain = optarg;
496 yppush_jobs = atoi(optarg);
497 if (yppush_jobs <= 0)
503 case 'h': /* we can handle multiple hosts */
504 if ((tmp = (struct hostlist *)malloc(sizeof(struct hostlist))) == NULL) {
505 yp_error("malloc failed");
508 tmp->name = strdup(optarg);
509 tmp->next = yppush_hostlist;
510 yppush_hostlist = tmp;
513 yppush_timeout = atoi(optarg);
527 yppush_mapname = argv[0];
529 if (yppush_mapname == NULL) {
530 /* "No guts, no glory." */
535 * If no domain was specified, try to find the default
536 * domain. If we can't find that, we're doomed and must bail.
538 if (yppush_domain == NULL) {
539 char *yppush_check_domain;
540 if (!yp_get_default_domain(&yppush_check_domain) &&
541 !_yp_check(&yppush_check_domain)) {
542 yp_error("no domain specified and NIS not running");
545 yp_get_default_domain(&yppush_domain);
548 /* Check to see that we are the master for this map. */
550 if (gethostname ((char *)&myname, sizeof(myname))) {
551 yp_error("failed to get name of local host: %s",
556 key.data = "YP_MASTER_NAME";
557 key.size = sizeof("YP_MASTER_NAME") - 1;
559 if (yp_get_record(yppush_domain, yppush_mapname,
560 &key, &data, 1) != YP_TRUE) {
561 yp_error("couldn't open %s map: %s", yppush_mapname,
566 if (strncasecmp(myname, data.data, data.size) == 0) {
567 /* I am master server, and no explicit host list was
568 specified: do not push map to myself -- this will
569 fail with YPPUSH_AGE anyway. */
570 if (yppush_hostlist == NULL)
573 yp_error("warning: this host is not the master for %s",
580 yppush_master = malloc(data.size + 1);
581 strncpy(yppush_master, data.data, data.size);
582 yppush_master[data.size] = '\0';
584 /* Install some handy handlers. */
585 signal(SIGTERM, handler);
586 signal(SIGINT, handler);
588 /* set initial transaction ID */
589 yppush_transid = time(NULL);
591 if (yppush_hostlist) {
593 * Host list was specified on the command line:
594 * kick off the transfers by hand.
596 tmp = yppush_hostlist;
598 yppush_foreach(YP_TRUE, NULL, 0, tmp->name,
599 strlen(tmp->name), NULL);
604 * Do a yp_all() on the ypservers map and initiate a ypxfr
607 ypxfr_get_map("ypservers", yppush_domain,
608 "localhost", yppush_foreach);
612 yp_error("all jobs dispatched");
614 /* All done -- normal exit. */