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
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
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 char *yp_dir = _PATH_YP;
60 char *yppush_mapname = NULL; /* Map to transfer. */
61 char *yppush_domain = NULL; /* Domain in which map resides. */
62 char *yppush_master = NULL; /* Master NIS server for said domain. */
63 int verbose = 0; /* Toggle verbose mode. */
64 unsigned long yppush_transid = 0;
65 int yppush_timeout = 80; /* Default timeout. */
66 int yppush_jobs = 0; /* Number of allowed concurrent jobs. */
67 int yppush_running_jobs = 0; /* Number of currently running jobs. */
68 int yppush_alarm_tripped = 0;
70 /* Structure for holding information about a running job. */
76 unsigned long prognum;
83 struct jobs *yppush_joblist; /* Linked list of running jobs. */
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;
126 yp_error("checking return status: transaction ID: %lu",
128 if (status != YPPUSH_SUCC || verbose) {
129 yp_error("transfer of map %s to server %s %s",
130 job->map, job->server, status == YPPUSH_SUCC ?
131 "succeeded" : "failed");
132 yp_error("status returned by ypxfr: %s", status > YPPUSH_AGE ?
133 yppusherr_string(status) :
134 ypxfrerr_string(status));
139 svc_unregister(job->prognum, 1);
141 yppush_running_jobs--;
150 int still_pending = 1;
152 /* Let all the information trickle in. */
153 while (!now && still_pending) {
154 jptr = yppush_joblist;
157 if (jptr->polled == 0) {
160 yp_error("%s has not responded",
164 yp_error("%s has responded",
171 yp_error("%d transfer%sstill pending",
173 still_pending > 1 ? "s " : " ");
174 yppush_alarm_tripped = 0;
175 alarm(YPPUSH_RESPONSE_TIMEOUT);
178 if (yppush_alarm_tripped == 1) {
179 yp_error("timed out");
184 yp_error("all transfers complete");
190 /* All stats collected and reported -- kill all the stragglers. */
191 jptr = yppush_joblist;
194 yp_error("warning: exiting with transfer \
195 to %s (transid = %lu) still pending", jptr->server, jptr->tid);
196 svc_unregister(jptr->prognum, 1);
204 * Handler for 'normal' signals.
210 if (sig == SIGTERM || sig == SIGINT || sig == SIGABRT) {
211 yppush_joblist = NULL;
215 if (sig == SIGALRM) {
217 yppush_alarm_tripped++;
224 * Dispatch loop for callback RPC services.
233 #endif /* def FD_SETSIZE */
234 struct timeval timeout;
244 #endif /* def FD_SETSIZE */
245 switch (select(_rpc_dtablesize(), &readfds, NULL, NULL, &timeout)) {
249 yp_error("select failed: %s", strerror(errno));
252 yp_error("select() timed out");
255 svc_getreqset(&readfds);
262 * Special handler for asynchronous socket I/O. We mark the
263 * sockets of the callback handlers as O_ASYNC and handle SIGIO
264 * events here, which will occur when the callback handler has
265 * something interesting to tell us.
268 async_handler(int sig)
272 /* reset any pending alarms. */
274 yppush_alarm_tripped++;
275 kill(getpid(), SIGALRM);
280 * RPC service routines for callbacks.
283 yppushproc_null_1_svc(void *argp, struct svc_req *rqstp)
285 static char * result;
286 /* Do nothing -- RPC conventions call for all a null proc. */
287 return((void *) &result);
291 yppushproc_xfrresp_1_svc(yppushresp_xfr *argp, struct svc_req *rqstp)
293 static char * result;
294 yppush_show_status(argp->status, argp->transid);
295 return((void *) &result);
299 * Transmit a YPPROC_XFR request to ypserv.
302 yppush_send_xfr(struct jobs *job)
305 /* ypresp_xfr *resp; */
309 struct timeval timeout;
315 * The ypreq_xfr structure has a member of type map_parms,
316 * which seems to require the order number of the map.
317 * It isn't actually used at the other end (at least the
318 * FreeBSD ypserv doesn't use it) but we fill it in here
319 * for the sake of completeness.
321 key.data = "YP_LAST_MODIFIED";
322 key.size = sizeof ("YP_LAST_MODIFIED") - 1;
324 if (yp_get_record(yppush_domain, yppush_mapname, &key, &data,
326 yp_error("failed to read order number from %s: %s: %s",
327 yppush_mapname, yperr_string(yp_errno),
332 /* Fill in the request arguments */
333 req.map_parms.ordernum = atoi(data.data);
334 req.map_parms.domain = yppush_domain;
335 req.map_parms.peer = yppush_master;
336 req.map_parms.map = job->map;
337 req.transid = job->tid;
338 req.prog = job->prognum;
339 req.port = job->port;
341 /* Get a handle to the remote ypserv. */
342 if ((clnt = clnt_create(job->server, YPPROG, YPVERS, "udp")) == NULL) {
343 yp_error("%s: %s",job->server,clnt_spcreateerror("couldn't \
344 create udp handle to NIS server"));
345 switch (rpc_createerr.cf_stat) {
346 case RPC_UNKNOWNHOST:
347 job->stat = YPPUSH_NOHOST;
349 case RPC_PMAPFAILURE:
350 job->stat = YPPUSH_PMAP;
353 job->stat = YPPUSH_RPC;
360 * Reduce timeout to nothing since we may not
361 * get a response from ypserv and we don't want to block.
363 if (clnt_control(clnt, CLSET_TIMEOUT, (char *)&timeout) == FALSE)
364 yp_error("failed to set timeout on ypproc_xfr call");
366 /* Invoke the ypproc_xfr service. */
367 if (ypproc_xfr_2(&req, clnt) == NULL) {
368 clnt_geterr(clnt, &err);
369 if (err.re_status != RPC_SUCCESS &&
370 err.re_status != RPC_TIMEDOUT) {
371 yp_error("%s: %s", job->server, clnt_sperror(clnt,
373 job->stat = YPPUSH_YPSERV;
385 * Main driver function. Register the callback service, add the transfer
386 * request to the internal list, send the YPPROC_XFR request to ypserv
387 * do other magic things.
390 yp_push(char *server, char *map, unsigned long tid)
392 unsigned long prognum;
393 int sock = RPC_ANYSOCK;
398 * Register the callback service on the first free
399 * transient program number.
401 xprt = svcudp_create(sock);
402 for (prognum = 0x40000000; prognum < 0x5FFFFFFF; prognum++) {
403 if (svc_register(xprt, prognum, 1,
404 yppush_xfrrespprog_1, IPPROTO_UDP) == TRUE)
408 /* Register the job in our linked list of jobs. */
409 if ((job = (struct jobs *)malloc(sizeof (struct jobs))) == NULL) {
410 yp_error("malloc failed");
414 /* Initialize the info for this job. */
417 job->port = xprt->xp_port;
418 job->sock = xprt->xp_fd; /*XXX: Evil!! EEEEEEEVIL!!! */
419 job->server = strdup(server);
420 job->map = strdup(map);
421 job->prognum = prognum;
423 job->next = yppush_joblist;
424 yppush_joblist = job;
427 * Set the RPC sockets to asynchronous mode. This will
428 * cause the system to smack us with a SIGIO when an RPC
429 * callback is delivered. This in turn allows us to handle
430 * the callback even though we may be in the middle of doing
431 * something else at the time.
433 * XXX This is a horrible thing to do for two reasons,
434 * both of which have to do with portability:
435 * 1) We really ought not to be sticking our grubby mits
436 * into the RPC service transport handle like this.
437 * 2) Even in this day and age, there are still some *NIXes
438 * that don't support async socket I/O.
440 if (fcntl(xprt->xp_fd, F_SETOWN, getpid()) == -1 ||
441 fcntl(xprt->xp_fd, F_SETFL, O_ASYNC) == -1) {
442 yp_error("failed to set async I/O mode: %s",
448 yp_error("initiating transfer: %s -> %s (transid = %lu)",
449 yppush_mapname, server, tid);
453 * Send the XFR request to ypserv. We don't have to wait for
454 * a response here since we can handle them asynchronously.
457 if (yppush_send_xfr(job)){
458 /* Transfer request blew up. */
459 yppush_show_status(job->stat ? job->stat :
460 YPPUSH_YPSERV,job->tid);
463 yp_error("%s has been called", server);
470 * Called for each entry in the ypservers map from yp_get_map(), which
471 * is our private yp_all() routine.
474 yppush_foreach(int status, char *key, int keylen, char *val, int vallen,
477 char server[YPMAXRECORD + 2];
479 if (status != YP_TRUE)
482 snprintf(server, sizeof(server), "%.*s", vallen, val);
485 * Restrict the number of concurrent jobs. If yppush_jobs number
486 * of jobs have already been dispatched and are still pending,
487 * wait for one of them to finish so we can reuse its slot.
489 if (yppush_jobs <= 1) {
490 yppush_alarm_tripped = 0;
491 while (!yppush_alarm_tripped && yppush_running_jobs) {
492 alarm(yppush_timeout);
493 yppush_alarm_tripped = 0;
498 yppush_alarm_tripped = 0;
499 while (!yppush_alarm_tripped && yppush_running_jobs >= yppush_jobs) {
500 alarm(yppush_timeout);
501 yppush_alarm_tripped = 0;
507 /* Cleared for takeoff: set everything in motion. */
508 if (yp_push(server, yppush_mapname, yppush_transid))
511 /* Bump the job counter and transaction ID. */
512 yppush_running_jobs++;
519 fprintf (stderr, "%s\n%s\n",
520 "usage: yppush [-d domain] [-t timeout] [-j #parallel jobs] [-h host]",
521 " [-p path] mapname");
526 * Entry point. (About time!)
529 main(int argc, char *argv[])
533 char myname[MAXHOSTNAMELEN];
536 struct hostlist *next;
538 struct hostlist *yppush_hostlist = NULL;
539 struct hostlist *tmp;
542 while ((ch = getopt(argc, argv, "d:j:p:h:t:v")) != -1) {
545 yppush_domain = optarg;
548 yppush_jobs = atoi(optarg);
549 if (yppush_jobs <= 0)
555 case 'h': /* we can handle multiple hosts */
556 if ((tmp = (struct hostlist *)malloc(sizeof(struct hostlist))) == NULL) {
557 yp_error("malloc failed");
560 tmp->name = strdup(optarg);
561 tmp->next = yppush_hostlist;
562 yppush_hostlist = tmp;
565 yppush_timeout = atoi(optarg);
579 yppush_mapname = argv[0];
581 if (yppush_mapname == NULL) {
582 /* "No guts, no glory." */
587 * If no domain was specified, try to find the default
588 * domain. If we can't find that, we're doomed and must bail.
590 if (yppush_domain == NULL) {
591 char *yppush_check_domain;
592 if (!yp_get_default_domain(&yppush_check_domain) &&
593 !_yp_check(&yppush_check_domain)) {
594 yp_error("no domain specified and NIS not running");
597 yp_get_default_domain(&yppush_domain);
600 /* Check to see that we are the master for this map. */
602 if (gethostname ((char *)&myname, sizeof(myname))) {
603 yp_error("failed to get name of local host: %s",
608 key.data = "YP_MASTER_NAME";
609 key.size = sizeof("YP_MASTER_NAME") - 1;
611 if (yp_get_record(yppush_domain, yppush_mapname,
612 &key, &data, 1) != YP_TRUE) {
613 yp_error("couldn't open %s map: %s", yppush_mapname,
618 if (strncmp(myname, data.data, data.size)) {
619 yp_error("warning: this host is not the master for %s",
626 yppush_master = malloc(data.size + 1);
627 strncpy(yppush_master, data.data, data.size);
628 yppush_master[data.size] = '\0';
630 /* Install some handy handlers. */
631 signal(SIGALRM, handler);
632 signal(SIGTERM, handler);
633 signal(SIGINT, handler);
634 signal(SIGABRT, handler);
637 * Set up the SIGIO handler. Make sure that some of the
638 * other signals are blocked while the handler is running so
639 * select() doesn't get interrupted.
641 sigemptyset(&sa.sa_mask);
642 sigaddset(&sa.sa_mask, SIGIO); /* Goes without saying. */
643 sigaddset(&sa.sa_mask, SIGPIPE);
644 sigaddset(&sa.sa_mask, SIGCHLD);
645 sigaddset(&sa.sa_mask, SIGALRM);
646 sigaddset(&sa.sa_mask, SIGINT);
647 sa.sa_handler = async_handler;
650 sigaction(SIGIO, &sa, NULL);
652 /* set initial transaction ID */
653 yppush_transid = time((time_t *)NULL);
655 if (yppush_hostlist) {
657 * Host list was specified on the command line:
658 * kick off the transfers by hand.
660 tmp = yppush_hostlist;
662 yppush_foreach(YP_TRUE, NULL, 0, tmp->name,
663 strlen(tmp->name), NULL);
668 * Do a yp_all() on the ypservers map and initiate a ypxfr
671 ypxfr_get_map("ypservers", yppush_domain,
672 "localhost", yppush_foreach);
676 yp_error("all jobs dispatched");
678 /* All done -- normal exit. */