315 lines
8.7 KiB
C
315 lines
8.7 KiB
C
/* $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2009, Sun Microsystems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
* - Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* - 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.
|
|
* - Neither the name of Sun Microsystems, Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1986-1991 by Sun Microsystems Inc.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#ident "@(#)svc_generic.c 1.19 94/04/24 SMI"
|
|
static char sccsid[] = "@(#)svc_generic.c 1.21 89/02/28 Copyr 1988 Sun Micro";
|
|
#endif
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* svc_generic.c, Server side for RPC.
|
|
*
|
|
*/
|
|
|
|
#include "namespace.h"
|
|
#include "reentrant.h"
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/nettype.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <err.h>
|
|
#include "un-namespace.h"
|
|
|
|
#include "rpc_com.h"
|
|
#include "mt_misc.h"
|
|
|
|
extern int __svc_vc_setflag(SVCXPRT *, int);
|
|
|
|
/*
|
|
* The highest level interface for server creation.
|
|
* It tries for all the nettokens in that particular class of token
|
|
* and returns the number of handles it can create and/or find.
|
|
*
|
|
* It creates a link list of all the handles it could create.
|
|
* If svc_create() is called multiple times, it uses the handle
|
|
* created earlier instead of creating a new handle every time.
|
|
*
|
|
* prognum - Program number
|
|
* versnum - Version number
|
|
* nettype - Networktype token
|
|
*/
|
|
int
|
|
svc_create(void (*dispatch)(struct svc_req *, SVCXPRT *),
|
|
rpcprog_t prognum, rpcvers_t versnum, const char *nettype)
|
|
{
|
|
struct xlist {
|
|
SVCXPRT *xprt; /* Server handle */
|
|
struct xlist *next; /* Next item */
|
|
} *l;
|
|
static struct xlist *xprtlist; /* A link list of all the handles */
|
|
int num = 0;
|
|
SVCXPRT *xprt;
|
|
struct netconfig *nconf;
|
|
void *handle;
|
|
|
|
/* VARIABLES PROTECTED BY xprtlist_lock: xprtlist */
|
|
|
|
if ((handle = __rpc_setconf(nettype)) == NULL) {
|
|
warnx("svc_create: unknown protocol");
|
|
return (0);
|
|
}
|
|
while ((nconf = __rpc_getconf(handle)) != NULL) {
|
|
mutex_lock(&xprtlist_lock);
|
|
for (l = xprtlist; l; l = l->next) {
|
|
if (strcmp(l->xprt->xp_netid, nconf->nc_netid) == 0) {
|
|
/* Found an old one, use it */
|
|
(void) rpcb_unset(prognum, versnum, nconf);
|
|
if (svc_reg(l->xprt, prognum, versnum,
|
|
dispatch, nconf) == FALSE)
|
|
warnx(
|
|
"svc_create: could not register prog %u vers %u on %s",
|
|
(unsigned)prognum, (unsigned)versnum,
|
|
nconf->nc_netid);
|
|
else
|
|
num++;
|
|
break;
|
|
}
|
|
}
|
|
if (l == NULL) {
|
|
/* It was not found. Now create a new one */
|
|
xprt = svc_tp_create(dispatch, prognum, versnum, nconf);
|
|
if (xprt) {
|
|
l = (struct xlist *)malloc(sizeof (*l));
|
|
if (l == NULL) {
|
|
warnx("svc_create: no memory");
|
|
mutex_unlock(&xprtlist_lock);
|
|
return (0);
|
|
}
|
|
l->xprt = xprt;
|
|
l->next = xprtlist;
|
|
xprtlist = l;
|
|
num++;
|
|
}
|
|
}
|
|
mutex_unlock(&xprtlist_lock);
|
|
}
|
|
__rpc_endconf(handle);
|
|
/*
|
|
* In case of num == 0; the error messages are generated by the
|
|
* underlying layers; and hence not needed here.
|
|
*/
|
|
return (num);
|
|
}
|
|
|
|
/*
|
|
* The high level interface to svc_tli_create().
|
|
* It tries to create a server for "nconf" and registers the service
|
|
* with the rpcbind. It calls svc_tli_create();
|
|
*
|
|
* prognum - Program number
|
|
* versnum - Version number
|
|
* ncofn - Netconfig structure for the network
|
|
*/
|
|
SVCXPRT *
|
|
svc_tp_create(void (*dispatch)(struct svc_req *, SVCXPRT *),
|
|
rpcprog_t prognum, rpcvers_t versnum, const struct netconfig *nconf)
|
|
{
|
|
SVCXPRT *xprt;
|
|
|
|
if (nconf == NULL) {
|
|
warnx(
|
|
"svc_tp_create: invalid netconfig structure for prog %u vers %u",
|
|
(unsigned)prognum, (unsigned)versnum);
|
|
return (NULL);
|
|
}
|
|
xprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
|
|
if (xprt == NULL) {
|
|
return (NULL);
|
|
}
|
|
/*LINTED const castaway*/
|
|
(void) rpcb_unset(prognum, versnum, (struct netconfig *) nconf);
|
|
if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
|
|
warnx(
|
|
"svc_tp_create: Could not register prog %u vers %u on %s",
|
|
(unsigned)prognum, (unsigned)versnum,
|
|
nconf->nc_netid);
|
|
SVC_DESTROY(xprt);
|
|
return (NULL);
|
|
}
|
|
return (xprt);
|
|
}
|
|
|
|
/*
|
|
* If fd is RPC_ANYFD, then it opens a fd for the given transport
|
|
* provider (nconf cannot be NULL then). If the t_state is T_UNBND and
|
|
* bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For
|
|
* NULL bindadr and Connection oriented transports, the value of qlen
|
|
* is set to 8.
|
|
*
|
|
* If sendsz or recvsz are zero, their default values are chosen.
|
|
*
|
|
* fd - Connection end point
|
|
* nconf - Netconfig struct for nettoken
|
|
* bindaddr - Local bind address
|
|
* sendsz - Max sendsize
|
|
* recvxz - Max recvsize
|
|
*/
|
|
SVCXPRT *
|
|
svc_tli_create(int fd, const struct netconfig *nconf,
|
|
const struct t_bind *bindaddr, u_int sendsz, u_int recvsz)
|
|
{
|
|
SVCXPRT *xprt = NULL; /* service handle */
|
|
bool_t madefd = FALSE; /* whether fd opened here */
|
|
struct __rpc_sockinfo si;
|
|
struct sockaddr_storage ss;
|
|
socklen_t slen;
|
|
|
|
if (fd == RPC_ANYFD) {
|
|
if (nconf == NULL) {
|
|
warnx("svc_tli_create: invalid netconfig");
|
|
return (NULL);
|
|
}
|
|
fd = __rpc_nconf2fd(nconf);
|
|
if (fd == -1) {
|
|
warnx(
|
|
"svc_tli_create: could not open connection for %s",
|
|
nconf->nc_netid);
|
|
return (NULL);
|
|
}
|
|
__rpc_nconf2sockinfo(nconf, &si);
|
|
madefd = TRUE;
|
|
} else {
|
|
/*
|
|
* It is an open descriptor. Get the transport info.
|
|
*/
|
|
if (!__rpc_fd2sockinfo(fd, &si)) {
|
|
warnx(
|
|
"svc_tli_create: could not get transport information");
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the fd is unbound, try to bind it.
|
|
*/
|
|
if (madefd || !__rpc_sockisbound(fd)) {
|
|
if (bindaddr == NULL) {
|
|
if (bindresvport(fd, NULL) < 0) {
|
|
memset(&ss, 0, sizeof ss);
|
|
ss.ss_family = si.si_af;
|
|
ss.ss_len = si.si_alen;
|
|
if (_bind(fd, (struct sockaddr *)(void *)&ss,
|
|
(socklen_t)si.si_alen) < 0) {
|
|
warnx(
|
|
"svc_tli_create: could not bind to anonymous port");
|
|
goto freedata;
|
|
}
|
|
}
|
|
_listen(fd, SOMAXCONN);
|
|
} else {
|
|
if (_bind(fd,
|
|
(struct sockaddr *)bindaddr->addr.buf,
|
|
(socklen_t)si.si_alen) < 0) {
|
|
warnx(
|
|
"svc_tli_create: could not bind to requested address");
|
|
goto freedata;
|
|
}
|
|
_listen(fd, (int)bindaddr->qlen);
|
|
}
|
|
|
|
}
|
|
/*
|
|
* call transport specific function.
|
|
*/
|
|
switch (si.si_socktype) {
|
|
case SOCK_STREAM:
|
|
slen = sizeof ss;
|
|
if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen)
|
|
== 0) {
|
|
/* accepted socket */
|
|
xprt = svc_fd_create(fd, sendsz, recvsz);
|
|
} else
|
|
xprt = svc_vc_create(fd, sendsz, recvsz);
|
|
if (!nconf || !xprt)
|
|
break;
|
|
#if 0
|
|
/* XXX fvdl */
|
|
if (strcmp(nconf->nc_protofmly, "inet") == 0 ||
|
|
strcmp(nconf->nc_protofmly, "inet6") == 0)
|
|
(void) __svc_vc_setflag(xprt, TRUE);
|
|
#endif
|
|
break;
|
|
case SOCK_DGRAM:
|
|
xprt = svc_dg_create(fd, sendsz, recvsz);
|
|
break;
|
|
default:
|
|
warnx("svc_tli_create: bad service type");
|
|
goto freedata;
|
|
}
|
|
|
|
if (xprt == NULL)
|
|
/*
|
|
* The error messages here are spitted out by the lower layers:
|
|
* svc_vc_create(), svc_fd_create() and svc_dg_create().
|
|
*/
|
|
goto freedata;
|
|
|
|
/* Fill in type of service */
|
|
xprt->xp_type = __rpc_socktype2seman(si.si_socktype);
|
|
|
|
if (nconf) {
|
|
xprt->xp_netid = strdup(nconf->nc_netid);
|
|
xprt->xp_tp = strdup(nconf->nc_device);
|
|
}
|
|
return (xprt);
|
|
|
|
freedata:
|
|
if (madefd)
|
|
(void)_close(fd);
|
|
if (xprt) {
|
|
if (!madefd) /* so that svc_destroy doesnt close fd */
|
|
xprt->xp_fd = RPC_ANYFD;
|
|
SVC_DESTROY(xprt);
|
|
}
|
|
return (NULL);
|
|
}
|