feda6ab864
and in mountd(8) -h bindip Specify specific IP addresses to bind to for TCP and UDP requests. This option may be specified multiple times. If no -h option is specified, rpc.statd will bind to INADDR_ANY. Note that when specifying IP addresses with -h, rpc.statd will automatically add 127.0.0.1 and if IPv6 is enabled, ::1 to the list. (coming for rpc.lockd too) PR: bin/98500 MFC after: 1 week
469 lines
12 KiB
C
469 lines
12 KiB
C
/*
|
|
* Copyright (c) 1995
|
|
* A.R. Gordon (andrew.gordon@net-tel.co.uk). 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 for the FreeBSD project
|
|
* 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 ANDREW GORDON 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 THE AUTHOR 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.
|
|
*
|
|
*/
|
|
|
|
/* main() function for status monitor daemon. Some of the code in this */
|
|
/* file was generated by running rpcgen /usr/include/rpcsvc/sm_inter.x */
|
|
/* The actual program logic is in the file procs.c */
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/rpc_com.h>
|
|
#include <string.h>
|
|
#include <syslog.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/wait.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <netdb.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
#include "statd.h"
|
|
|
|
int debug = 0; /* Controls syslog() calls for debug messages */
|
|
|
|
char **hosts, *svcport_str = NULL;
|
|
int nhosts = 0;
|
|
int xcreated = 0;
|
|
|
|
void create_service(struct netconfig *nconf);
|
|
static void handle_sigchld(int sig);
|
|
void out_of_mem(void);
|
|
|
|
static void usage(void);
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
struct sigaction sa;
|
|
struct netconfig *nconf;
|
|
void *nc_handle;
|
|
in_port_t svcport;
|
|
int ch, i, s;
|
|
char *endptr, **hosts_bak;
|
|
int have_v6 = 1;
|
|
int maxrec = RPC_MAXDATASIZE;
|
|
|
|
while ((ch = getopt(argc, argv, "dh:p:")) != -1)
|
|
switch (ch) {
|
|
case 'd':
|
|
debug = 1;
|
|
break;
|
|
case 'h':
|
|
++nhosts;
|
|
hosts_bak = hosts;
|
|
hosts_bak = realloc(hosts, nhosts * sizeof(char *));
|
|
if (hosts_bak == NULL) {
|
|
if (hosts != NULL) {
|
|
for (i = 0; i < nhosts; i++)
|
|
free(hosts[i]);
|
|
free(hosts);
|
|
out_of_mem();
|
|
}
|
|
}
|
|
hosts = hosts_bak;
|
|
hosts[nhosts - 1] = strdup(optarg);
|
|
if (hosts[nhosts - 1] == NULL) {
|
|
for (i = 0; i < (nhosts - 1); i++)
|
|
free(hosts[i]);
|
|
free(hosts);
|
|
out_of_mem();
|
|
}
|
|
break;
|
|
case 'p':
|
|
endptr = NULL;
|
|
svcport = (in_port_t)strtoul(optarg, &endptr, 10);
|
|
if (endptr == NULL || *endptr != '\0' || svcport == 0 ||
|
|
svcport >= IPPORT_MAX)
|
|
usage();
|
|
|
|
svcport_str = strdup(optarg);
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
(void)rpcb_unset(SM_PROG, SM_VERS, NULL);
|
|
|
|
/*
|
|
* Check if IPv6 support is present.
|
|
*/
|
|
s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
|
|
if (s < 0)
|
|
have_v6 = 0;
|
|
else
|
|
close(s);
|
|
|
|
rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
|
|
|
|
/*
|
|
* If no hosts were specified, add a wildcard entry to bind to
|
|
* INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the
|
|
* list.
|
|
*/
|
|
if (nhosts == 0) {
|
|
hosts = malloc(sizeof(char**));
|
|
if (hosts == NULL)
|
|
out_of_mem();
|
|
|
|
hosts[0] = "*";
|
|
nhosts = 1;
|
|
} else {
|
|
hosts_bak = hosts;
|
|
if (have_v6) {
|
|
hosts_bak = realloc(hosts, (nhosts + 2) *
|
|
sizeof(char *));
|
|
if (hosts_bak == NULL) {
|
|
for (i = 0; i < nhosts; i++)
|
|
free(hosts[i]);
|
|
free(hosts);
|
|
out_of_mem();
|
|
} else
|
|
hosts = hosts_bak;
|
|
|
|
nhosts += 2;
|
|
hosts[nhosts - 2] = "::1";
|
|
} else {
|
|
hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *));
|
|
if (hosts_bak == NULL) {
|
|
for (i = 0; i < nhosts; i++)
|
|
free(hosts[i]);
|
|
|
|
free(hosts);
|
|
out_of_mem();
|
|
} else {
|
|
nhosts += 1;
|
|
hosts = hosts_bak;
|
|
}
|
|
}
|
|
hosts[nhosts - 1] = "127.0.0.1";
|
|
}
|
|
|
|
nc_handle = setnetconfig();
|
|
while ((nconf = getnetconfig(nc_handle))) {
|
|
/* We want to listen only on udp6, tcp6, udp, tcp transports */
|
|
if (nconf->nc_flag & NC_VISIBLE) {
|
|
/* Skip if there's no IPv6 support */
|
|
if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
|
|
/* DO NOTHING */
|
|
} else {
|
|
create_service(nconf);
|
|
}
|
|
}
|
|
}
|
|
endnetconfig(nc_handle);
|
|
init_file("/var/db/statd.status");
|
|
|
|
/* Note that it is NOT sensible to run this program from inetd - the */
|
|
/* protocol assumes that it will run immediately at boot time. */
|
|
daemon(0, 0);
|
|
openlog("rpc.statd", 0, LOG_DAEMON);
|
|
if (debug) syslog(LOG_INFO, "Starting - debug enabled");
|
|
else syslog(LOG_INFO, "Starting");
|
|
|
|
/* Install signal handler to collect exit status of child processes */
|
|
sa.sa_handler = handle_sigchld;
|
|
sigemptyset(&sa.sa_mask);
|
|
sigaddset(&sa.sa_mask, SIGCHLD);
|
|
sa.sa_flags = SA_RESTART;
|
|
sigaction(SIGCHLD, &sa, NULL);
|
|
|
|
/* Initialisation now complete - start operating */
|
|
notify_hosts(); /* Forks a process (if necessary) to do the */
|
|
/* SM_NOTIFY calls, which may be slow. */
|
|
|
|
svc_run(); /* Should never return */
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* This routine creates and binds sockets on the appropriate
|
|
* addresses. It gets called one time for each transport and
|
|
* registrates the service with rpcbind on that trasport.
|
|
*/
|
|
void
|
|
create_service(struct netconfig *nconf)
|
|
{
|
|
struct addrinfo hints, *res = NULL;
|
|
struct sockaddr_in *sin;
|
|
struct sockaddr_in6 *sin6;
|
|
struct __rpc_sockinfo si;
|
|
struct netbuf servaddr;
|
|
SVCXPRT *transp = NULL;
|
|
int aicode;
|
|
int fd;
|
|
int nhostsbak;
|
|
int r;
|
|
int registered = 0;
|
|
u_int32_t host_addr[4]; /* IPv4 or IPv6 */
|
|
|
|
if ((nconf->nc_semantics != NC_TPI_CLTS) &&
|
|
(nconf->nc_semantics != NC_TPI_COTS) &&
|
|
(nconf->nc_semantics != NC_TPI_COTS_ORD))
|
|
return; /* not my type */
|
|
|
|
/*
|
|
* XXX - using RPC library internal functions.
|
|
*/
|
|
if (!__rpc_nconf2sockinfo(nconf, &si)) {
|
|
syslog(LOG_ERR, "cannot get information for %s",
|
|
nconf->nc_netid);
|
|
return;
|
|
}
|
|
|
|
/* Get rpc.statd's address on this transport */
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = si.si_af;
|
|
hints.ai_socktype = si.si_socktype;
|
|
hints.ai_protocol = si.si_proto;
|
|
|
|
/*
|
|
* Bind to specific IPs if asked to
|
|
*/
|
|
nhostsbak = nhosts;
|
|
while (nhostsbak > 0) {
|
|
--nhostsbak;
|
|
|
|
/*
|
|
* XXX - using RPC library internal functions.
|
|
*/
|
|
if ((fd = __rpc_nconf2fd(nconf)) < 0) {
|
|
syslog(LOG_ERR, "cannot create socket for %s",
|
|
nconf->nc_netid);
|
|
continue;
|
|
}
|
|
switch (hints.ai_family) {
|
|
case AF_INET:
|
|
if (inet_pton(AF_INET, hosts[nhostsbak],
|
|
host_addr) == 1) {
|
|
hints.ai_flags &= AI_NUMERICHOST;
|
|
} else {
|
|
/*
|
|
* Skip if we have an AF_INET6 address.
|
|
*/
|
|
if (inet_pton(AF_INET6, hosts[nhostsbak],
|
|
host_addr) == 1) {
|
|
close(fd);
|
|
continue;
|
|
}
|
|
}
|
|
break;
|
|
case AF_INET6:
|
|
if (inet_pton(AF_INET6, hosts[nhostsbak],
|
|
host_addr) == 1) {
|
|
hints.ai_flags &= AI_NUMERICHOST;
|
|
} else {
|
|
/*
|
|
* Skip if we have an AF_INET address.
|
|
*/
|
|
if (inet_pton(AF_INET, hosts[nhostsbak],
|
|
host_addr) == 1) {
|
|
close(fd);
|
|
continue;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If no hosts were specified, just bind to INADDR_ANY
|
|
*/
|
|
if (strcmp("*", hosts[nhostsbak]) == 0) {
|
|
if (svcport_str == NULL) {
|
|
res = malloc(sizeof(struct addrinfo));
|
|
if (res == NULL)
|
|
out_of_mem();
|
|
res->ai_flags = hints.ai_flags;
|
|
res->ai_family = hints.ai_family;
|
|
res->ai_protocol = hints.ai_protocol;
|
|
switch (res->ai_family) {
|
|
case AF_INET:
|
|
sin = malloc(sizeof(struct sockaddr_in));
|
|
if (sin == NULL)
|
|
out_of_mem();
|
|
sin->sin_family = AF_INET;
|
|
sin->sin_port = htons(0);
|
|
sin->sin_addr.s_addr = htonl(INADDR_ANY);
|
|
res->ai_addr = (struct sockaddr*) sin;
|
|
res->ai_addrlen = (socklen_t)
|
|
sizeof(res->ai_addr);
|
|
break;
|
|
case AF_INET6:
|
|
sin6 = malloc(sizeof(struct sockaddr_in6));
|
|
if (res->ai_addr == NULL)
|
|
out_of_mem();
|
|
sin6->sin6_family = AF_INET6;
|
|
sin6->sin6_port = htons(0);
|
|
sin6->sin6_addr = in6addr_any;
|
|
res->ai_addr = (struct sockaddr*) sin6;
|
|
res->ai_addrlen = (socklen_t) sizeof(res->ai_addr);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
if ((aicode = getaddrinfo(NULL, svcport_str,
|
|
&hints, &res)) != 0) {
|
|
syslog(LOG_ERR,
|
|
"cannot get local address for %s: %s",
|
|
nconf->nc_netid,
|
|
gai_strerror(aicode));
|
|
continue;
|
|
}
|
|
}
|
|
} else {
|
|
if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
|
|
&hints, &res)) != 0) {
|
|
syslog(LOG_ERR,
|
|
"cannot get local address for %s: %s",
|
|
nconf->nc_netid, gai_strerror(aicode));
|
|
continue;
|
|
}
|
|
}
|
|
|
|
r = bindresvport_sa(fd, res->ai_addr);
|
|
if (r != 0) {
|
|
syslog(LOG_ERR, "bindresvport_sa: %m");
|
|
exit(1);
|
|
}
|
|
|
|
transp = svc_tli_create(fd, nconf, NULL,
|
|
RPC_MAXDATASIZE, RPC_MAXDATASIZE);
|
|
|
|
if (transp != (SVCXPRT *) NULL) {
|
|
if (!svc_register(transp, SM_PROG, SM_VERS,
|
|
sm_prog_1, 0)) {
|
|
syslog(LOG_ERR, "can't register on %s",
|
|
nconf->nc_netid);
|
|
} else {
|
|
if (!svc_reg(transp, SM_PROG, SM_VERS,
|
|
sm_prog_1, NULL))
|
|
syslog(LOG_ERR,
|
|
"can't register %s SM_PROG service",
|
|
nconf->nc_netid);
|
|
}
|
|
} else
|
|
syslog(LOG_WARNING, "can't create %s services",
|
|
nconf->nc_netid);
|
|
|
|
if (registered == 0) {
|
|
registered = 1;
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = si.si_af;
|
|
hints.ai_socktype = si.si_socktype;
|
|
hints.ai_protocol = si.si_proto;
|
|
|
|
if (svcport_str == NULL) {
|
|
svcport_str = malloc(NI_MAXSERV * sizeof(char));
|
|
if (svcport_str == NULL)
|
|
out_of_mem();
|
|
|
|
if (getnameinfo(res->ai_addr,
|
|
res->ai_addr->sa_len, NULL, NI_MAXHOST,
|
|
svcport_str, NI_MAXSERV * sizeof(char),
|
|
NI_NUMERICHOST | NI_NUMERICSERV))
|
|
errx(1, "Cannot get port number");
|
|
}
|
|
|
|
if((aicode = getaddrinfo(NULL, svcport_str, &hints,
|
|
&res)) != 0) {
|
|
syslog(LOG_ERR, "cannot get local address: %s",
|
|
gai_strerror(aicode));
|
|
exit(1);
|
|
}
|
|
|
|
servaddr.buf = malloc(res->ai_addrlen);
|
|
memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
|
|
servaddr.len = res->ai_addrlen;
|
|
|
|
rpcb_set(SM_PROG, SM_VERS, nconf, &servaddr);
|
|
|
|
xcreated++;
|
|
freeaddrinfo(res);
|
|
}
|
|
} /* end while */
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
fprintf(stderr, "usage: rpc.statd [-d] [-h <bindip>] [-p <port>]\n");
|
|
exit(1);
|
|
}
|
|
|
|
/* handle_sigchld ---------------------------------------------------------- */
|
|
/*
|
|
Purpose: Catch SIGCHLD and collect process status
|
|
Retruns: Nothing.
|
|
Notes: No special action required, other than to collect the
|
|
process status and hence allow the child to die:
|
|
we only use child processes for asynchronous transmission
|
|
of SM_NOTIFY to other systems, so it is normal for the
|
|
children to exit when they have done their work.
|
|
*/
|
|
|
|
static void handle_sigchld(int sig __unused)
|
|
{
|
|
int pid, status;
|
|
pid = wait4(-1, &status, WNOHANG, (struct rusage*)0);
|
|
if (!pid) syslog(LOG_ERR, "Phantom SIGCHLD??");
|
|
else if (status == 0)
|
|
{
|
|
if (debug) syslog(LOG_DEBUG, "Child %d exited OK", pid);
|
|
}
|
|
else syslog(LOG_ERR, "Child %d failed with status %d", pid,
|
|
WEXITSTATUS(status));
|
|
}
|
|
|
|
/*
|
|
* Out of memory, fatal
|
|
*/
|
|
void
|
|
out_of_mem()
|
|
{
|
|
|
|
syslog(LOG_ERR, "out of memory");
|
|
exit(2);
|
|
}
|