ansification and constification: s{\s+__P\((\(.*?\))\)}{$1}g; s{\(\s+}{\(}g; s{\s+\)}{\)}g; s{\s+,}{,}g; s{(\s+)(for|if|switch|while)\(}{$1$2 \(}g; s{return ([^\(].*?);}{return ($1);}g; s{([\w\)])([!=+/\*-]?=)([\w\(+-])}{$1 $2 $3}g; s{\s+$}{\n};g Also add $FreeBSD$ where needed. MFC after: 1 week
690 lines
16 KiB
C
690 lines
16 KiB
C
/*
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* Copyright (c) 1995
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* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/fcntl.h>
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#include <sys/wait.h>
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#include <sys/param.h>
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#include <rpc/rpc.h>
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#include <rpc/clnt.h>
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#include <rpc/pmap_clnt.h>
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#include <rpcsvc/yp.h>
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struct dom_binding {};
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#include <rpcsvc/ypclnt.h>
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#include "ypxfr_extern.h"
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#include "yppush_extern.h"
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char *progname = "yppush";
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int debug = 1;
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int _rpcpmstart = 0;
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char *yp_dir = _PATH_YP;
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char *yppush_mapname = NULL; /* Map to transfer. */
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char *yppush_domain = NULL; /* Domain in which map resides. */
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char *yppush_master = NULL; /* Master NIS server for said domain. */
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int verbose = 0; /* Toggle verbose mode. */
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unsigned long yppush_transid = 0;
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int yppush_timeout = 80; /* Default timeout. */
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int yppush_jobs = 0; /* Number of allowed concurrent jobs. */
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int yppush_running_jobs = 0; /* Number of currently running jobs. */
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int yppush_alarm_tripped = 0;
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/* Structure for holding information about a running job. */
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struct jobs {
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unsigned long tid;
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int sock;
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int port;
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ypxfrstat stat;
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unsigned long prognum;
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char *server;
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char *map;
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int polled;
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struct jobs *next;
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};
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struct jobs *yppush_joblist; /* Linked list of running jobs. */
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/*
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* Local error messages.
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*/
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static char *yppusherr_string(err)
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int err;
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{
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switch (err) {
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case YPPUSH_TIMEDOUT: return("transfer or callback timed out");
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case YPPUSH_YPSERV: return("failed to contact ypserv");
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case YPPUSH_NOHOST: return("no such host");
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case YPPUSH_PMAP: return("portmapper failure");
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default: return("unknown error code");
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}
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}
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/*
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* Report state of a job.
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*/
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static int yppush_show_status(status, tid)
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ypxfrstat status;
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unsigned long tid;
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{
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struct jobs *job;
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job = yppush_joblist;
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while (job) {
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if (job->tid == tid)
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break;
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job = job->next;
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}
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if (job->polled) {
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return(0);
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}
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if (verbose > 1)
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yp_error("checking return status: transaction ID: %lu",
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job->tid);
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if (status != YPPUSH_SUCC || verbose) {
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yp_error("transfer of map %s to server %s %s",
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job->map, job->server, status == YPPUSH_SUCC ?
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"succeeded" : "failed");
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yp_error("status returned by ypxfr: %s", status > YPPUSH_AGE ?
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yppusherr_string(status) :
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ypxfrerr_string(status));
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}
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job->polled = 1;
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svc_unregister(job->prognum, 1);
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yppush_running_jobs--;
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return(0);
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}
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/* Exit routine. */
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static void yppush_exit(now)
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int now;
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{
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struct jobs *jptr;
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int still_pending = 1;
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/* Let all the information trickle in. */
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while (!now && still_pending) {
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jptr = yppush_joblist;
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still_pending = 0;
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while (jptr) {
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if (jptr->polled == 0) {
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still_pending++;
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if (verbose > 1)
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yp_error("%s has not responded",
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jptr->server);
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} else {
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if (verbose > 1)
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yp_error("%s has responded",
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jptr->server);
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}
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jptr = jptr->next;
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}
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if (still_pending) {
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if (verbose > 1)
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yp_error("%d transfer%sstill pending",
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still_pending,
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still_pending > 1 ? "s " : " ");
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yppush_alarm_tripped = 0;
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alarm(YPPUSH_RESPONSE_TIMEOUT);
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pause();
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alarm(0);
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if (yppush_alarm_tripped == 1) {
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yp_error("timed out");
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now = 1;
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}
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} else {
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if (verbose)
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yp_error("all transfers complete");
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break;
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}
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}
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/* All stats collected and reported -- kill all the stragglers. */
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jptr = yppush_joblist;
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while (jptr) {
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if (!jptr->polled)
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yp_error("warning: exiting with transfer \
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to %s (transid = %lu) still pending", jptr->server, jptr->tid);
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svc_unregister(jptr->prognum, 1);
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jptr = jptr->next;
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}
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exit(0);
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}
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/*
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* Handler for 'normal' signals.
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*/
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static void handler(sig)
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int sig;
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{
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if (sig == SIGTERM || sig == SIGINT || sig == SIGABRT) {
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yppush_jobs = 0;
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yppush_exit(1);
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}
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if (sig == SIGALRM) {
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alarm(0);
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yppush_alarm_tripped++;
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}
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return;
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}
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/*
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* Dispatch loop for callback RPC services.
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*/
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static void yppush_svc_run()
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{
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#ifdef FD_SETSIZE
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fd_set readfds;
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#else
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int readfds;
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#endif /* def FD_SETSIZE */
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struct timeval timeout;
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timeout.tv_usec = 0;
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timeout.tv_sec = 5;
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retry:
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#ifdef FD_SETSIZE
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readfds = svc_fdset;
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#else
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readfds = svc_fds;
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#endif /* def FD_SETSIZE */
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switch (select(_rpc_dtablesize(), &readfds, NULL, NULL, &timeout)) {
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case -1:
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if (errno == EINTR)
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goto retry;
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yp_error("select failed: %s", strerror(errno));
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break;
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case 0:
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yp_error("select() timed out");
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break;
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default:
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svc_getreqset(&readfds);
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break;
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}
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return;
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}
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/*
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* Special handler for asynchronous socket I/O. We mark the
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* sockets of the callback handlers as O_ASYNC and handle SIGIO
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* events here, which will occur when the callback handler has
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* something interesting to tell us.
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*/
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static void async_handler(sig)
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int sig;
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{
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yppush_svc_run();
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/* reset any pending alarms. */
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alarm(0);
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yppush_alarm_tripped++;
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kill(getpid(), SIGALRM);
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return;
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}
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/*
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* RPC service routines for callbacks.
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*/
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void *
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yppushproc_null_1_svc(void *argp, struct svc_req *rqstp)
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{
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static char * result;
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/* Do nothing -- RPC conventions call for all a null proc. */
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return((void *) &result);
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}
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void *
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yppushproc_xfrresp_1_svc(yppushresp_xfr *argp, struct svc_req *rqstp)
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{
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static char * result;
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yppush_show_status(argp->status, argp->transid);
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return((void *) &result);
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}
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/*
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* Transmit a YPPROC_XFR request to ypserv.
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*/
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static int yppush_send_xfr(job)
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struct jobs *job;
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{
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ypreq_xfr req;
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/* ypresp_xfr *resp; */
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DBT key, data;
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CLIENT *clnt;
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struct rpc_err err;
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struct timeval timeout;
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timeout.tv_usec = 0;
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timeout.tv_sec = 0;
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/*
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* The ypreq_xfr structure has a member of type map_parms,
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* which seems to require the order number of the map.
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* It isn't actually used at the other end (at least the
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* FreeBSD ypserv doesn't use it) but we fill it in here
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* for the sake of completeness.
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*/
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key.data = "YP_LAST_MODIFIED";
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key.size = sizeof ("YP_LAST_MODIFIED") - 1;
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if (yp_get_record(yppush_domain, yppush_mapname, &key, &data,
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1) != YP_TRUE) {
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yp_error("failed to read order number from %s: %s: %s",
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yppush_mapname, yperr_string(yp_errno),
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strerror(errno));
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return(1);
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}
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/* Fill in the request arguments */
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req.map_parms.ordernum = atoi(data.data);
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req.map_parms.domain = yppush_domain;
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req.map_parms.peer = yppush_master;
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req.map_parms.map = job->map;
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req.transid = job->tid;
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req.prog = job->prognum;
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req.port = job->port;
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/* Get a handle to the remote ypserv. */
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if ((clnt = clnt_create(job->server, YPPROG, YPVERS, "udp")) == NULL) {
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yp_error("%s: %s",job->server,clnt_spcreateerror("couldn't \
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create udp handle to NIS server"));
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switch (rpc_createerr.cf_stat) {
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case RPC_UNKNOWNHOST:
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job->stat = YPPUSH_NOHOST;
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break;
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case RPC_PMAPFAILURE:
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job->stat = YPPUSH_PMAP;
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break;
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default:
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job->stat = YPPUSH_RPC;
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break;
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}
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return(1);
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}
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/*
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* Reduce timeout to nothing since we may not
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* get a response from ypserv and we don't want to block.
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*/
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if (clnt_control(clnt, CLSET_TIMEOUT, (char *)&timeout) == FALSE)
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yp_error("failed to set timeout on ypproc_xfr call");
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/* Invoke the ypproc_xfr service. */
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if (ypproc_xfr_2(&req, clnt) == NULL) {
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clnt_geterr(clnt, &err);
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if (err.re_status != RPC_SUCCESS &&
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err.re_status != RPC_TIMEDOUT) {
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yp_error("%s: %s", job->server, clnt_sperror(clnt,
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"yp_xfr failed"));
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job->stat = YPPUSH_YPSERV;
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clnt_destroy(clnt);
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return(1);
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}
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}
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clnt_destroy(clnt);
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return(0);
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}
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/*
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* Main driver function. Register the callback service, add the transfer
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* request to the internal list, send the YPPROC_XFR request to ypserv
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* do other magic things.
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*/
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int yp_push(server, map, tid)
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char *server;
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char *map;
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unsigned long tid;
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{
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unsigned long prognum;
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int sock = RPC_ANYSOCK;
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SVCXPRT *xprt;
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struct jobs *job;
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/*
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* Register the callback service on the first free
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* transient program number.
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*/
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xprt = svcudp_create(sock);
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for (prognum = 0x40000000; prognum < 0x5FFFFFFF; prognum++) {
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if (svc_register(xprt, prognum, 1,
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yppush_xfrrespprog_1, IPPROTO_UDP) == TRUE)
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break;
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}
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/* Register the job in our linked list of jobs. */
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if ((job = (struct jobs *)malloc(sizeof (struct jobs))) == NULL) {
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yp_error("malloc failed");
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yppush_exit(1);
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}
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/* Initialize the info for this job. */
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job->stat = 0;
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job->tid = tid;
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job->port = xprt->xp_port;
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job->sock = xprt->xp_fd; /*XXX: Evil!! EEEEEEEVIL!!! */
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job->server = strdup(server);
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job->map = strdup(map);
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job->prognum = prognum;
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job->polled = 0;
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job->next = yppush_joblist;
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yppush_joblist = job;
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/*
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* Set the RPC sockets to asynchronous mode. This will
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* cause the system to smack us with a SIGIO when an RPC
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* callback is delivered. This in turn allows us to handle
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* the callback even though we may be in the middle of doing
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* something else at the time.
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*
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* XXX This is a horrible thing to do for two reasons,
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* both of which have to do with portability:
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* 1) We really ought not to be sticking our grubby mits
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* into the RPC service transport handle like this.
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* 2) Even in this day and age, there are still some *NIXes
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* that don't support async socket I/O.
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*/
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if (fcntl(xprt->xp_fd, F_SETOWN, getpid()) == -1 ||
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fcntl(xprt->xp_fd, F_SETFL, O_ASYNC) == -1) {
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yp_error("failed to set async I/O mode: %s",
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strerror(errno));
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yppush_exit(1);
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}
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if (verbose) {
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yp_error("initiating transfer: %s -> %s (transid = %lu)",
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yppush_mapname, server, tid);
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}
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/*
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* Send the XFR request to ypserv. We don't have to wait for
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* a response here since we can handle them asynchronously.
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*/
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if (yppush_send_xfr(job)){
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/* Transfer request blew up. */
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yppush_show_status(job->stat ? job->stat :
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YPPUSH_YPSERV,job->tid);
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} else {
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if (verbose > 1)
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yp_error("%s has been called", server);
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}
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return(0);
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}
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/*
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* Called for each entry in the ypservers map from yp_get_map(), which
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* is our private yp_all() routine.
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*/
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int yppush_foreach(status, key, keylen, val, vallen, data)
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int status;
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char *key;
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int keylen;
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char *val;
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int vallen;
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char *data;
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{
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char server[YPMAXRECORD + 2];
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if (status != YP_TRUE)
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return (status);
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snprintf(server, sizeof(server), "%.*s", vallen, val);
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/*
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* Restrict the number of concurrent jobs. If yppush_jobs number
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* of jobs have already been dispatched and are still pending,
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* wait for one of them to finish so we can reuse its slot.
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*/
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if (yppush_jobs <= 1) {
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yppush_alarm_tripped = 0;
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while (!yppush_alarm_tripped && yppush_running_jobs) {
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alarm(yppush_timeout);
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yppush_alarm_tripped = 0;
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pause();
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alarm(0);
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}
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} else {
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yppush_alarm_tripped = 0;
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while (!yppush_alarm_tripped && yppush_running_jobs >= yppush_jobs) {
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alarm(yppush_timeout);
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yppush_alarm_tripped = 0;
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pause();
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alarm(0);
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}
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}
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/* Cleared for takeoff: set everything in motion. */
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if (yp_push(&server, yppush_mapname, yppush_transid))
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return(yp_errno);
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/* Bump the job counter and transaction ID. */
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yppush_running_jobs++;
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yppush_transid++;
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return (0);
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}
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static void usage()
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{
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fprintf (stderr, "%s\n%s\n",
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"usage: yppush [-d domain] [-t timeout] [-j #parallel jobs] [-h host]",
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" [-p path] mapname");
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exit(1);
|
|
}
|
|
|
|
/*
|
|
* Entry point. (About time!)
|
|
*/
|
|
int
|
|
main(argc,argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int ch;
|
|
DBT key, data;
|
|
char myname[MAXHOSTNAMELEN];
|
|
struct hostlist {
|
|
char *name;
|
|
struct hostlist *next;
|
|
};
|
|
struct hostlist *yppush_hostlist = NULL;
|
|
struct hostlist *tmp;
|
|
struct sigaction sa;
|
|
|
|
while ((ch = getopt(argc, argv, "d:j:p:h:t:v")) != -1) {
|
|
switch (ch) {
|
|
case 'd':
|
|
yppush_domain = optarg;
|
|
break;
|
|
case 'j':
|
|
yppush_jobs = atoi(optarg);
|
|
if (yppush_jobs <= 0)
|
|
yppush_jobs = 1;
|
|
break;
|
|
case 'p':
|
|
yp_dir = optarg;
|
|
break;
|
|
case 'h': /* we can handle multiple hosts */
|
|
if ((tmp = (struct hostlist *)malloc(sizeof(struct hostlist))) == NULL) {
|
|
yp_error("malloc failed");
|
|
yppush_exit(1);
|
|
}
|
|
tmp->name = strdup(optarg);
|
|
tmp->next = yppush_hostlist;
|
|
yppush_hostlist = tmp;
|
|
break;
|
|
case 't':
|
|
yppush_timeout = atoi(optarg);
|
|
break;
|
|
case 'v':
|
|
verbose++;
|
|
break;
|
|
default:
|
|
usage();
|
|
break;
|
|
}
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
yppush_mapname = argv[0];
|
|
|
|
if (yppush_mapname == NULL) {
|
|
/* "No guts, no glory." */
|
|
usage();
|
|
}
|
|
|
|
/*
|
|
* If no domain was specified, try to find the default
|
|
* domain. If we can't find that, we're doomed and must bail.
|
|
*/
|
|
if (yppush_domain == NULL) {
|
|
char *yppush_check_domain;
|
|
if (!yp_get_default_domain(&yppush_check_domain) &&
|
|
!_yp_check(&yppush_check_domain)) {
|
|
yp_error("no domain specified and NIS not running");
|
|
usage();
|
|
} else
|
|
yp_get_default_domain(&yppush_domain);
|
|
}
|
|
|
|
/* Check to see that we are the master for this map. */
|
|
|
|
if (gethostname ((char *)&myname, sizeof(myname))) {
|
|
yp_error("failed to get name of local host: %s",
|
|
strerror(errno));
|
|
yppush_exit(1);
|
|
}
|
|
|
|
key.data = "YP_MASTER_NAME";
|
|
key.size = sizeof("YP_MASTER_NAME") - 1;
|
|
|
|
if (yp_get_record(yppush_domain, yppush_mapname,
|
|
&key, &data, 1) != YP_TRUE) {
|
|
yp_error("couldn't open %s map: %s", yppush_mapname,
|
|
strerror(errno));
|
|
yppush_exit(1);
|
|
}
|
|
|
|
if (strncmp(myname, data.data, data.size)) {
|
|
yp_error("warning: this host is not the master for %s",
|
|
yppush_mapname);
|
|
#ifdef NITPICKY
|
|
yppush_exit(1);
|
|
#endif
|
|
}
|
|
|
|
yppush_master = malloc(data.size + 1);
|
|
strncpy(yppush_master, data.data, data.size);
|
|
yppush_master[data.size] = '\0';
|
|
|
|
/* Install some handy handlers. */
|
|
signal(SIGALRM, handler);
|
|
signal(SIGTERM, handler);
|
|
signal(SIGINT, handler);
|
|
signal(SIGABRT, handler);
|
|
|
|
/*
|
|
* Set up the SIGIO handler. Make sure that some of the
|
|
* other signals are blocked while the handler is running so
|
|
* select() doesn't get interrupted.
|
|
*/
|
|
sigemptyset(&sa.sa_mask);
|
|
sigaddset(&sa.sa_mask, SIGIO); /* Goes without saying. */
|
|
sigaddset(&sa.sa_mask, SIGPIPE);
|
|
sigaddset(&sa.sa_mask, SIGCHLD);
|
|
sigaddset(&sa.sa_mask, SIGALRM);
|
|
sigaddset(&sa.sa_mask, SIGINT);
|
|
sa.sa_handler = async_handler;
|
|
sa.sa_flags = 0;
|
|
|
|
sigaction(SIGIO, &sa, NULL);
|
|
|
|
/* set initial transaction ID */
|
|
yppush_transid = time((time_t *)NULL);
|
|
|
|
if (yppush_hostlist) {
|
|
/*
|
|
* Host list was specified on the command line:
|
|
* kick off the transfers by hand.
|
|
*/
|
|
tmp = yppush_hostlist;
|
|
while (tmp) {
|
|
yppush_foreach(YP_TRUE, NULL, 0, tmp->name,
|
|
strlen(tmp->name));
|
|
tmp = tmp->next;
|
|
}
|
|
} else {
|
|
/*
|
|
* Do a yp_all() on the ypservers map and initiate a ypxfr
|
|
* for each one.
|
|
*/
|
|
ypxfr_get_map("ypservers", yppush_domain,
|
|
"localhost", yppush_foreach);
|
|
}
|
|
|
|
if (verbose > 1)
|
|
yp_error("all jobs dispatched");
|
|
|
|
/* All done -- normal exit. */
|
|
yppush_exit(0);
|
|
|
|
/* Just in case. */
|
|
exit(0);
|
|
}
|