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
34 static const char rcsid[] =
45 #include <sys/socket.h>
46 #include <sys/fcntl.h>
48 #include <sys/param.h>
51 #include <rpc/pmap_clnt.h>
52 #include <rpcsvc/yp.h>
53 struct dom_binding {};
54 #include <rpcsvc/ypclnt.h>
55 #include "ypxfr_extern.h"
56 #include "yppush_extern.h"
58 char *progname = "yppush";
61 char *yp_dir = _PATH_YP;
63 char *yppush_mapname = NULL; /* Map to transfer. */
64 char *yppush_domain = NULL; /* Domain in which map resides. */
65 char *yppush_master = NULL; /* Master NIS server for said domain. */
66 int verbose = 0; /* Toggle verbose mode. */
67 unsigned long yppush_transid = 0;
68 int yppush_timeout = 80; /* Default timeout. */
69 int yppush_jobs = 0; /* Number of allowed concurrent jobs. */
70 int yppush_running_jobs = 0; /* Number of currently running jobs. */
71 int yppush_alarm_tripped = 0;
73 /* Structure for holding information about a running job. */
79 unsigned long prognum;
86 struct jobs *yppush_joblist; /* Linked list of running jobs. */
89 * Local error messages.
92 yppusherr_string(int err)
96 return("transfer or callback timed out");
98 return("failed to contact ypserv");
100 return("no such host");
102 return("portmapper failure");
104 return("unknown error code");
109 * Report state of a job.
112 yppush_show_status(ypxfrstat status, unsigned long tid)
116 job = yppush_joblist;
129 yp_error("checking return status: transaction ID: %lu",
131 if (status != YPPUSH_SUCC || verbose) {
132 yp_error("transfer of map %s to server %s %s",
133 job->map, job->server, status == YPPUSH_SUCC ?
134 "succeeded" : "failed");
135 yp_error("status returned by ypxfr: %s", status > YPPUSH_AGE ?
136 yppusherr_string(status) :
137 ypxfrerr_string(status));
142 svc_unregister(job->prognum, 1);
144 yppush_running_jobs--;
153 int still_pending = 1;
155 /* Let all the information trickle in. */
156 while (!now && still_pending) {
157 jptr = yppush_joblist;
160 if (jptr->polled == 0) {
163 yp_error("%s has not responded",
167 yp_error("%s has responded",
174 yp_error("%d transfer%sstill pending",
176 still_pending > 1 ? "s " : " ");
177 yppush_alarm_tripped = 0;
178 alarm(YPPUSH_RESPONSE_TIMEOUT);
181 if (yppush_alarm_tripped == 1) {
182 yp_error("timed out");
187 yp_error("all transfers complete");
193 /* All stats collected and reported -- kill all the stragglers. */
194 jptr = yppush_joblist;
197 yp_error("warning: exiting with transfer \
198 to %s (transid = %lu) still pending", jptr->server, jptr->tid);
199 svc_unregister(jptr->prognum, 1);
207 * Handler for 'normal' signals.
213 if (sig == SIGTERM || sig == SIGINT || sig == SIGABRT) {
218 if (sig == SIGALRM) {
220 yppush_alarm_tripped++;
227 * Dispatch loop for callback RPC services.
236 #endif /* def FD_SETSIZE */
237 struct timeval timeout;
247 #endif /* def FD_SETSIZE */
248 switch (select(_rpc_dtablesize(), &readfds, NULL, NULL, &timeout)) {
252 yp_error("select failed: %s", strerror(errno));
255 yp_error("select() timed out");
258 svc_getreqset(&readfds);
265 * Special handler for asynchronous socket I/O. We mark the
266 * sockets of the callback handlers as O_ASYNC and handle SIGIO
267 * events here, which will occur when the callback handler has
268 * something interesting to tell us.
271 async_handler(int sig)
275 /* reset any pending alarms. */
277 yppush_alarm_tripped++;
278 kill(getpid(), SIGALRM);
283 * RPC service routines for callbacks.
286 yppushproc_null_1_svc(void *argp, struct svc_req *rqstp)
288 static char * result;
289 /* Do nothing -- RPC conventions call for all a null proc. */
290 return((void *) &result);
294 yppushproc_xfrresp_1_svc(yppushresp_xfr *argp, struct svc_req *rqstp)
296 static char * result;
297 yppush_show_status(argp->status, argp->transid);
298 return((void *) &result);
302 * Transmit a YPPROC_XFR request to ypserv.
305 yppush_send_xfr(struct jobs *job)
308 /* ypresp_xfr *resp; */
312 struct timeval timeout;
318 * The ypreq_xfr structure has a member of type map_parms,
319 * which seems to require the order number of the map.
320 * It isn't actually used at the other end (at least the
321 * FreeBSD ypserv doesn't use it) but we fill it in here
322 * for the sake of completeness.
324 key.data = "YP_LAST_MODIFIED";
325 key.size = sizeof ("YP_LAST_MODIFIED") - 1;
327 if (yp_get_record(yppush_domain, yppush_mapname, &key, &data,
329 yp_error("failed to read order number from %s: %s: %s",
330 yppush_mapname, yperr_string(yp_errno),
335 /* Fill in the request arguments */
336 req.map_parms.ordernum = atoi(data.data);
337 req.map_parms.domain = yppush_domain;
338 req.map_parms.peer = yppush_master;
339 req.map_parms.map = job->map;
340 req.transid = job->tid;
341 req.prog = job->prognum;
342 req.port = job->port;
344 /* Get a handle to the remote ypserv. */
345 if ((clnt = clnt_create(job->server, YPPROG, YPVERS, "udp")) == NULL) {
346 yp_error("%s: %s",job->server,clnt_spcreateerror("couldn't \
347 create udp handle to NIS server"));
348 switch (rpc_createerr.cf_stat) {
349 case RPC_UNKNOWNHOST:
350 job->stat = YPPUSH_NOHOST;
352 case RPC_PMAPFAILURE:
353 job->stat = YPPUSH_PMAP;
356 job->stat = YPPUSH_RPC;
363 * Reduce timeout to nothing since we may not
364 * get a response from ypserv and we don't want to block.
366 if (clnt_control(clnt, CLSET_TIMEOUT, (char *)&timeout) == FALSE)
367 yp_error("failed to set timeout on ypproc_xfr call");
369 /* Invoke the ypproc_xfr service. */
370 if (ypproc_xfr_2(&req, clnt) == NULL) {
371 clnt_geterr(clnt, &err);
372 if (err.re_status != RPC_SUCCESS &&
373 err.re_status != RPC_TIMEDOUT) {
374 yp_error("%s: %s", job->server, clnt_sperror(clnt,
376 job->stat = YPPUSH_YPSERV;
388 * Main driver function. Register the callback service, add the transfer
389 * request to the internal list, send the YPPROC_XFR request to ypserv
390 * do other magic things.
393 yp_push(char *server, char *map, unsigned long tid)
395 unsigned long prognum;
396 int sock = RPC_ANYSOCK;
401 * Register the callback service on the first free
402 * transient program number.
404 xprt = svcudp_create(sock);
405 for (prognum = 0x40000000; prognum < 0x5FFFFFFF; prognum++) {
406 if (svc_register(xprt, prognum, 1,
407 yppush_xfrrespprog_1, IPPROTO_UDP) == TRUE)
411 /* Register the job in our linked list of jobs. */
412 if ((job = (struct jobs *)malloc(sizeof (struct jobs))) == NULL) {
413 yp_error("malloc failed");
417 /* Initialize the info for this job. */
420 job->port = xprt->xp_port;
421 job->sock = xprt->xp_fd; /*XXX: Evil!! EEEEEEEVIL!!! */
422 job->server = strdup(server);
423 job->map = strdup(map);
424 job->prognum = prognum;
426 job->next = yppush_joblist;
427 yppush_joblist = job;
430 * Set the RPC sockets to asynchronous mode. This will
431 * cause the system to smack us with a SIGIO when an RPC
432 * callback is delivered. This in turn allows us to handle
433 * the callback even though we may be in the middle of doing
434 * something else at the time.
436 * XXX This is a horrible thing to do for two reasons,
437 * both of which have to do with portability:
438 * 1) We really ought not to be sticking our grubby mits
439 * into the RPC service transport handle like this.
440 * 2) Even in this day and age, there are still some *NIXes
441 * that don't support async socket I/O.
443 if (fcntl(xprt->xp_fd, F_SETOWN, getpid()) == -1 ||
444 fcntl(xprt->xp_fd, F_SETFL, O_ASYNC) == -1) {
445 yp_error("failed to set async I/O mode: %s",
451 yp_error("initiating transfer: %s -> %s (transid = %lu)",
452 yppush_mapname, server, tid);
456 * Send the XFR request to ypserv. We don't have to wait for
457 * a response here since we can handle them asynchronously.
460 if (yppush_send_xfr(job)){
461 /* Transfer request blew up. */
462 yppush_show_status(job->stat ? job->stat :
463 YPPUSH_YPSERV,job->tid);
466 yp_error("%s has been called", server);
473 * Called for each entry in the ypservers map from yp_get_map(), which
474 * is our private yp_all() routine.
477 yppush_foreach(int status, char *key, int keylen, char *val, int vallen,
480 char server[YPMAXRECORD + 2];
482 if (status != YP_TRUE)
485 snprintf(server, sizeof(server), "%.*s", vallen, val);
488 * Restrict the number of concurrent jobs. If yppush_jobs number
489 * of jobs have already been dispatched and are still pending,
490 * wait for one of them to finish so we can reuse its slot.
492 if (yppush_jobs <= 1) {
493 yppush_alarm_tripped = 0;
494 while (!yppush_alarm_tripped && yppush_running_jobs) {
495 alarm(yppush_timeout);
496 yppush_alarm_tripped = 0;
501 yppush_alarm_tripped = 0;
502 while (!yppush_alarm_tripped && yppush_running_jobs >= yppush_jobs) {
503 alarm(yppush_timeout);
504 yppush_alarm_tripped = 0;
510 /* Cleared for takeoff: set everything in motion. */
511 if (yp_push(server, yppush_mapname, yppush_transid))
514 /* Bump the job counter and transaction ID. */
515 yppush_running_jobs++;
522 fprintf (stderr, "%s\n%s\n",
523 "usage: yppush [-d domain] [-t timeout] [-j #parallel jobs] [-h host]",
524 " [-p path] mapname");
529 * Entry point. (About time!)
532 main(int argc, char *argv[])
536 char myname[MAXHOSTNAMELEN];
539 struct hostlist *next;
541 struct hostlist *yppush_hostlist = NULL;
542 struct hostlist *tmp;
545 while ((ch = getopt(argc, argv, "d:j:p:h:t:v")) != -1) {
548 yppush_domain = optarg;
551 yppush_jobs = atoi(optarg);
552 if (yppush_jobs <= 0)
558 case 'h': /* we can handle multiple hosts */
559 if ((tmp = (struct hostlist *)malloc(sizeof(struct hostlist))) == NULL) {
560 yp_error("malloc failed");
563 tmp->name = strdup(optarg);
564 tmp->next = yppush_hostlist;
565 yppush_hostlist = tmp;
568 yppush_timeout = atoi(optarg);
582 yppush_mapname = argv[0];
584 if (yppush_mapname == NULL) {
585 /* "No guts, no glory." */
590 * If no domain was specified, try to find the default
591 * domain. If we can't find that, we're doomed and must bail.
593 if (yppush_domain == NULL) {
594 char *yppush_check_domain;
595 if (!yp_get_default_domain(&yppush_check_domain) &&
596 !_yp_check(&yppush_check_domain)) {
597 yp_error("no domain specified and NIS not running");
600 yp_get_default_domain(&yppush_domain);
603 /* Check to see that we are the master for this map. */
605 if (gethostname ((char *)&myname, sizeof(myname))) {
606 yp_error("failed to get name of local host: %s",
611 key.data = "YP_MASTER_NAME";
612 key.size = sizeof("YP_MASTER_NAME") - 1;
614 if (yp_get_record(yppush_domain, yppush_mapname,
615 &key, &data, 1) != YP_TRUE) {
616 yp_error("couldn't open %s map: %s", yppush_mapname,
621 if (strncmp(myname, data.data, data.size)) {
622 yp_error("warning: this host is not the master for %s",
629 yppush_master = malloc(data.size + 1);
630 strncpy(yppush_master, data.data, data.size);
631 yppush_master[data.size] = '\0';
633 /* Install some handy handlers. */
634 signal(SIGALRM, handler);
635 signal(SIGTERM, handler);
636 signal(SIGINT, handler);
637 signal(SIGABRT, handler);
640 * Set up the SIGIO handler. Make sure that some of the
641 * other signals are blocked while the handler is running so
642 * select() doesn't get interrupted.
644 sigemptyset(&sa.sa_mask);
645 sigaddset(&sa.sa_mask, SIGIO); /* Goes without saying. */
646 sigaddset(&sa.sa_mask, SIGPIPE);
647 sigaddset(&sa.sa_mask, SIGCHLD);
648 sigaddset(&sa.sa_mask, SIGALRM);
649 sigaddset(&sa.sa_mask, SIGINT);
650 sa.sa_handler = async_handler;
653 sigaction(SIGIO, &sa, NULL);
655 /* set initial transaction ID */
656 yppush_transid = time((time_t *)NULL);
658 if (yppush_hostlist) {
660 * Host list was specified on the command line:
661 * kick off the transfers by hand.
663 tmp = yppush_hostlist;
665 yppush_foreach(YP_TRUE, NULL, 0, tmp->name,
666 strlen(tmp->name), NULL);
671 * Do a yp_all() on the ypservers map and initiate a ypxfr
674 ypxfr_get_map("ypservers", yppush_domain,
675 "localhost", yppush_foreach);
679 yp_error("all jobs dispatched");
681 /* All done -- normal exit. */