313 lines
8.4 KiB
C
313 lines
8.4 KiB
C
/* $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $ */
|
|
|
|
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1986-1991 by Sun Microsystems Inc.
|
|
*/
|
|
|
|
/* #ident "@(#)svc_generic.c 1.19 94/04/24 SMI" */
|
|
|
|
#if !defined(lint) && defined(SCCSIDS)
|
|
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"
|
|
|
|
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.
|
|
*/
|
|
int
|
|
svc_create(dispatch, prognum, versnum, nettype)
|
|
void (*dispatch)(struct svc_req *, SVCXPRT *);
|
|
rpcprog_t prognum; /* Program number */
|
|
rpcvers_t versnum; /* Version number */
|
|
const char *nettype; /* Networktype token */
|
|
{
|
|
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;
|
|
extern mutex_t xprtlist_lock;
|
|
|
|
/* 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();
|
|
*/
|
|
SVCXPRT *
|
|
svc_tp_create(dispatch, prognum, versnum, nconf)
|
|
void (*dispatch)(struct svc_req *, SVCXPRT *);
|
|
rpcprog_t prognum; /* Program number */
|
|
rpcvers_t versnum; /* Version number */
|
|
const struct netconfig *nconf; /* Netconfig structure for the network */
|
|
{
|
|
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.
|
|
*/
|
|
SVCXPRT *
|
|
svc_tli_create(fd, nconf, bindaddr, sendsz, recvsz)
|
|
int fd; /* Connection end point */
|
|
const struct netconfig *nconf; /* Netconfig struct for nettoken */
|
|
const struct t_bind *bindaddr; /* Local bind address */
|
|
u_int sendsz; /* Max sendsize */
|
|
u_int recvsz; /* Max recvsize */
|
|
{
|
|
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 *)(void *)&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);
|
|
}
|