353 lines
8.8 KiB
C
353 lines
8.8 KiB
C
/*
|
|
* Copyright (c) 1995, 1996
|
|
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Bill Paul.
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <memory.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h> /* getenv, exit */
|
|
#include <string.h>
|
|
#include <string.h> /* strcmp */
|
|
#include <syslog.h>
|
|
#include <unistd.h>
|
|
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/rpc_com.h>
|
|
#include <rpc/pmap_clnt.h> /* for pmap_unset */
|
|
#include <rpcsvc/yp.h>
|
|
struct dom_binding {};
|
|
#include <rpcsvc/ypclnt.h>
|
|
|
|
#include "yppasswd.h"
|
|
#include "yppasswdd_extern.h"
|
|
#include "yppasswd_private.h"
|
|
#include "ypxfr_extern.h"
|
|
#include "yp_extern.h"
|
|
|
|
#ifndef SIG_PF
|
|
#define SIG_PF void(*)(int)
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
#define RPC_SVC_FG
|
|
#endif
|
|
|
|
#define _RPCSVC_CLOSEDOWN 120
|
|
int _rpcpmstart = 0; /* Started by a port monitor ? */
|
|
static int _rpcfdtype;
|
|
/* Whether Stream or Datagram ? */
|
|
/* States a server can be in wrt request */
|
|
|
|
#define _IDLE 0
|
|
#define _SERVED 1
|
|
#define _SERVING 2
|
|
|
|
static char _localhost[] = "localhost";
|
|
static char _passwd_byname[] = "passwd.byname";
|
|
extern int _rpcsvcstate; /* Set when a request is serviced */
|
|
static char _progname[] = "rpc.yppasswdd";
|
|
char *progname = _progname;
|
|
static char _yp_dir[] = _PATH_YP;
|
|
char *yp_dir = _yp_dir;
|
|
static char _passfile_default[] = _PATH_YP "master.passwd";
|
|
char *passfile_default = _passfile_default;
|
|
char *passfile;
|
|
char *yppasswd_domain = NULL;
|
|
int no_chsh = 0;
|
|
int no_chfn = 0;
|
|
int allow_additions = 0;
|
|
int multidomain = 0;
|
|
int verbose = 0;
|
|
int resvport = 1;
|
|
int inplace = 0;
|
|
char sockname[] = YP_SOCKNAME;
|
|
|
|
static void
|
|
terminate(int sig __unused)
|
|
{
|
|
rpcb_unset(YPPASSWDPROG, YPPASSWDVERS, NULL);
|
|
rpcb_unset(MASTER_YPPASSWDPROG, MASTER_YPPASSWDVERS, NULL);
|
|
unlink(sockname);
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
reload(int sig __unused)
|
|
{
|
|
load_securenets();
|
|
}
|
|
|
|
static void
|
|
closedown(int sig __unused)
|
|
{
|
|
if (_rpcsvcstate == _IDLE) {
|
|
extern fd_set svc_fdset;
|
|
static int size;
|
|
int i, openfd;
|
|
|
|
if (_rpcfdtype == SOCK_DGRAM) {
|
|
unlink(sockname);
|
|
exit(0);
|
|
}
|
|
if (size == 0) {
|
|
size = getdtablesize();
|
|
}
|
|
for (i = 0, openfd = 0; i < size && openfd < 2; i++)
|
|
if (FD_ISSET(i, &svc_fdset))
|
|
openfd++;
|
|
if (openfd <= 1) {
|
|
unlink(sockname);
|
|
exit(0);
|
|
}
|
|
}
|
|
if (_rpcsvcstate == _SERVED)
|
|
_rpcsvcstate = _IDLE;
|
|
|
|
(void) signal(SIGALRM, (SIG_PF) closedown);
|
|
(void) alarm(_RPCSVC_CLOSEDOWN/2);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "%s\n%s\n",
|
|
"usage: rpc.yppasswdd [-t master.passwd file] [-d domain] [-p path] [-s]",
|
|
" [-f] [-m] [-i] [-a] [-v] [-u] [-h]");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
struct rlimit rlim;
|
|
SVCXPRT *transp = NULL;
|
|
struct sockaddr_in saddr;
|
|
int asize = sizeof (saddr);
|
|
struct netconfig *nconf;
|
|
void *localhandle;
|
|
int ch;
|
|
char *mastername;
|
|
char myname[MAXHOSTNAMELEN + 2];
|
|
int maxrec = RPC_MAXDATASIZE;
|
|
|
|
extern int debug;
|
|
|
|
debug = 1;
|
|
|
|
while ((ch = getopt(argc, argv, "t:d:p:sfamuivh")) != -1) {
|
|
switch (ch) {
|
|
case 't':
|
|
passfile_default = optarg;
|
|
break;
|
|
case 'd':
|
|
yppasswd_domain = optarg;
|
|
break;
|
|
case 's':
|
|
no_chsh++;
|
|
break;
|
|
case 'f':
|
|
no_chfn++;
|
|
break;
|
|
case 'p':
|
|
yp_dir = optarg;
|
|
break;
|
|
case 'a':
|
|
allow_additions++;
|
|
break;
|
|
case 'm':
|
|
multidomain++;
|
|
break;
|
|
case 'i':
|
|
inplace++;
|
|
break;
|
|
case 'v':
|
|
verbose++;
|
|
break;
|
|
case 'u':
|
|
resvport = 0;
|
|
break;
|
|
default:
|
|
case 'h':
|
|
usage();
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (yppasswd_domain == NULL) {
|
|
if (yp_get_default_domain(&yppasswd_domain)) {
|
|
yp_error("no domain specified and system domain \
|
|
name isn't set -- aborting");
|
|
usage();
|
|
}
|
|
}
|
|
|
|
load_securenets();
|
|
|
|
if (getrpcport(_localhost, YPPROG, YPVERS, IPPROTO_UDP) <= 0) {
|
|
yp_error("no ypserv processes registered with local portmap");
|
|
yp_error("this host is not an NIS server -- aborting");
|
|
exit(1);
|
|
}
|
|
|
|
if ((mastername = ypxfr_get_master(yppasswd_domain,
|
|
_passwd_byname, _localhost, 0)) == NULL) {
|
|
yp_error("can't get name of NIS master server for domain %s",
|
|
yppasswd_domain);
|
|
exit(1);
|
|
}
|
|
|
|
if (gethostname((char *)&myname, sizeof(myname)) == -1) {
|
|
yp_error("can't get local hostname: %s", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
if (strncasecmp(mastername, (char *)&myname, sizeof(myname))) {
|
|
yp_error("master of %s is %s, but we are %s",
|
|
"passwd.byname", mastername, myname);
|
|
yp_error("this host is not the NIS master server for \
|
|
the %s domain -- aborting", yppasswd_domain);
|
|
exit(1);
|
|
}
|
|
|
|
debug = 0;
|
|
|
|
if (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {
|
|
int ssize = sizeof (int);
|
|
if (saddr.sin_family != AF_INET)
|
|
exit(1);
|
|
if (getsockopt(0, SOL_SOCKET, SO_TYPE,
|
|
(char *)&_rpcfdtype, &ssize) == -1)
|
|
exit(1);
|
|
_rpcpmstart = 1;
|
|
}
|
|
|
|
if (!debug && _rpcpmstart == 0) {
|
|
if (daemon(0,0)) {
|
|
err(1,"cannot fork");
|
|
}
|
|
}
|
|
openlog("rpc.yppasswdd", LOG_PID, LOG_DAEMON);
|
|
|
|
rpcb_unset(YPPASSWDPROG, YPPASSWDVERS, NULL);
|
|
rpcb_unset(MASTER_YPPASSWDPROG, MASTER_YPPASSWDVERS, NULL);
|
|
|
|
rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
|
|
|
|
if (svc_create(yppasswdprog_1, YPPASSWDPROG, YPPASSWDVERS, "netpath") == 0) {
|
|
yp_error("cannot create yppasswd service.");
|
|
exit(1);
|
|
}
|
|
if (svc_create(master_yppasswdprog_1, MASTER_YPPASSWDPROG,
|
|
MASTER_YPPASSWDVERS, "netpath") == 0) {
|
|
yp_error("cannot create master_yppasswd service.");
|
|
exit(1);
|
|
}
|
|
|
|
nconf = NULL;
|
|
localhandle = setnetconfig();
|
|
while ((nconf = getnetconfig(localhandle)) != NULL) {
|
|
if (nconf->nc_protofmly != NULL &&
|
|
strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0)
|
|
break;
|
|
}
|
|
if (nconf == NULL) {
|
|
yp_error("getnetconfigent unix: %s", nc_sperror());
|
|
exit(1);
|
|
}
|
|
unlink(sockname);
|
|
transp = svcunix_create(RPC_ANYSOCK, 0, 0, sockname);
|
|
if (transp == NULL) {
|
|
yp_error("cannot create AF_LOCAL service.");
|
|
exit(1);
|
|
}
|
|
if (!svc_reg(transp, MASTER_YPPASSWDPROG, MASTER_YPPASSWDVERS,
|
|
master_yppasswdprog_1, nconf)) {
|
|
yp_error("unable to register (MASTER_YPPASSWDPROG, \
|
|
MASTER_YPPASSWDVERS, unix).");
|
|
exit(1);
|
|
}
|
|
endnetconfig(localhandle);
|
|
|
|
/* Only root may connect() to the AF_UNIX link. */
|
|
if (chmod(sockname, 0))
|
|
err(1, "chmod of %s failed", sockname);
|
|
|
|
if (transp == (SVCXPRT *)NULL) {
|
|
yp_error("could not create a handle");
|
|
exit(1);
|
|
}
|
|
if (_rpcpmstart) {
|
|
(void) signal(SIGALRM, (SIG_PF) closedown);
|
|
(void) alarm(_RPCSVC_CLOSEDOWN/2);
|
|
}
|
|
|
|
/* Unlimited resource limits. */
|
|
rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
|
|
(void)setrlimit(RLIMIT_CPU, &rlim);
|
|
(void)setrlimit(RLIMIT_FSIZE, &rlim);
|
|
(void)setrlimit(RLIMIT_STACK, &rlim);
|
|
(void)setrlimit(RLIMIT_DATA, &rlim);
|
|
(void)setrlimit(RLIMIT_RSS, &rlim);
|
|
|
|
/* Don't drop core (not really necessary, but GP's). */
|
|
rlim.rlim_cur = rlim.rlim_max = 0;
|
|
(void)setrlimit(RLIMIT_CORE, &rlim);
|
|
|
|
/* Turn off signals. */
|
|
(void)signal(SIGALRM, SIG_IGN);
|
|
(void)signal(SIGHUP, (SIG_PF) reload);
|
|
(void)signal(SIGINT, SIG_IGN);
|
|
(void)signal(SIGPIPE, SIG_IGN);
|
|
(void)signal(SIGQUIT, SIG_IGN);
|
|
(void)signal(SIGTERM, (SIG_PF) terminate);
|
|
|
|
svc_run();
|
|
yp_error("svc_run returned");
|
|
exit(1);
|
|
/* NOTREACHED */
|
|
}
|