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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Usermode daemon which is responsible for sending kerberos credentials
* expiration warnings to the user, syslog or snmp (eventually), depending
* on how it is configured through /etc/krb5/warn.conf.
* the code in this file was borrowed from gssd.c
*/
#include <stdio.h>
#include <rpc/rpc.h>
#include <sys/syslog.h>
#include <sys/termios.h>
#include <unistd.h>
#include <sys/resource.h>
#include <sys/utsname.h>
#include <sys/systeminfo.h>
#include <stdlib.h>
#include <stropts.h>
#include <fcntl.h>
#include <strings.h>
#include <syslog.h>
#include <thread.h>
#include <netdb.h>
#include <libgen.h>
#include "kwarnd.h"
#define MAXTHREADS 64
int kwarnd_debug = 0; /* enable debugging printfs */
extern void kwarnprog_1(struct svc_req *, register SVCXPRT *);
static void usage(void);
static void detachfromtty(void);
extern int svc_create_local_service(void (*) (),
ulong_t, ulong_t, char *, char *);
extern void kwarnd_check_warning_list(void);
extern bool_t loadConfigFile(void);
/* following declarations needed in rpcgen-generated code */
int _rpcpmstart = 0; /* Started by a port monitor ? */
int _rpcfdtype; /* Whether Stream or Datagram ? */
int _rpcsvcdirty; /* Still serving ? */
mutex_t _svcstate_lock = ERRORCHECKMUTEX;
char myhostname[MAXHOSTNAMELEN] = {0};
char progname[MAXNAMELEN] = {0};
int
main(int argc, char **argv)
{
SVCXPRT *transp;
extern int optind;
int c;
char mname[FMNAMESZ + 1];
int rpc_svc_mode = RPC_SVC_MT_AUTO;
/* set locale and domain for internationalization */
setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
textdomain(TEXT_DOMAIN);
(void) strlcpy(progname, basename(argv[0]), sizeof (progname));
/*
* Take special note that "getuid()" is called here. This call is used
* rather that app_krb5_user_uid(), to ensure ktkt_warnd(8) is running
* as root.
*/
#ifdef DEBUG
(void) setuid(0); /* DEBUG: set ruid to root */
#endif /* DEBUG */
if (getuid()) {
(void) fprintf(stderr,
gettext("[%s] must be run as root\n"), argv[0]);
#ifdef DEBUG
(void) fprintf(stderr, gettext(" warning only\n"));
#else /* !DEBUG */
exit(1);
#endif /* DEBUG */
}
while ((c = getopt(argc, argv, "d")) != -1)
switch (c) {
case 'd':
/* turn on debugging */
kwarnd_debug = 1;
break;
default:
usage();
}
if (optind != argc) {
usage();
}
(void) gethostname(myhostname, sizeof (myhostname));
/*
* Started by inetd if name of module just below stream
* head is either a sockmod or timod.
*/
if (!ioctl(0, I_LOOK, mname) && ((strcmp(mname, "sockmod") == 0) ||
(strcmp(mname, "timod") == 0))) {
char *netid;
struct netconfig *nconf;
openlog("kwarnd", LOG_PID, LOG_DAEMON);
if ((netid = getenv("NLSPROVIDER")) == NULL) {
netid = "ticotsord";
}
if ((nconf = getnetconfigent(netid)) == NULL) {
syslog(LOG_ERR, gettext("cannot get transport info"));
exit(1);
}
if (strcmp(mname, "sockmod") == 0) {
if (ioctl(0, I_POP, 0) || ioctl(0, I_PUSH, "timod")) {
syslog(LOG_ERR, gettext("could not get the "
"right module"));
exit(1);
}
}
/* XXX - is nconf even needed here? */
if ((transp = svc_tli_create(0, nconf, NULL, 0, 0)) == NULL) {
syslog(LOG_ERR, gettext("cannot create server handle"));
exit(1);
}
/*
* We use a NULL nconf because KWARNPROG has already been
* registered with rpcbind.
*/
if (!svc_reg(transp, KWARNPROG, KWARNVERS, kwarnprog_1, NULL)) {
syslog(LOG_ERR, gettext("unable to register "
"(KWARNPROG, KWARNVERS)"));
exit(1);
}
if (nconf)
freenetconfigent(nconf);
} else {
if (!kwarnd_debug)
detachfromtty();
openlog("kwarnd", LOG_PID, LOG_DAEMON);
if (svc_create_local_service(kwarnprog_1, KWARNPROG, KWARNVERS,
"netpath", "kwarnd") == 0) {
syslog(LOG_ERR, gettext("unable to create service"));
exit(1);
}
}
if (kwarnd_debug) {
fprintf(stderr,
gettext("kwarnd start: \n"));
}
(void) signal(SIGCHLD, SIG_IGN);
if (thr_create(NULL, 0,
(void *(*)(void *))kwarnd_check_warning_list, NULL,
THR_DETACHED | THR_DAEMON | THR_NEW_LWP, NULL)) {
syslog(LOG_ERR,
gettext("unable to create cache_cleanup thread"));
exit(1);
}
if (!loadConfigFile()) {
syslog(LOG_ERR, gettext("could not read config file\n"));
exit(1);
}
if (!rpc_control(RPC_SVC_MTMODE_SET, &rpc_svc_mode)) {
syslog(LOG_ERR, gettext("unable to set automatic MT mode"));
exit(1);
}
svc_run();
abort();
/*NOTREACHED*/
#ifdef lint
return (1);
#endif
}
static void
usage(void)
{
(void) fprintf(stderr, gettext("usage: %s [-d]\n"), progname);
exit(1);
}
/*
* detach from tty
*/
static void
detachfromtty(void)
{
switch (fork()) {
case -1:
perror(gettext("kwarnd: can not fork"));
exit(1);
/*NOTREACHED*/
case 0:
break;
default:
exit(0);
}
/*
* Close existing file descriptors, open "/dev/null" as
* standard input, output, and error, and detach from
* controlling terminal.
*/
closefrom(0);
(void) open("/dev/null", O_RDONLY);
(void) open("/dev/null", O_WRONLY);
(void) dup(1);
(void) setsid();
}
/*ARGSUSED*/
int
kwarnprog_1_freeresult(SVCXPRT *transport, xdrproc_t xdr_res, caddr_t res)
{
xdr_free(xdr_res, res);
return (1);
}
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