/*
* Copyright (c) 2010, Oracle America, Inc.
*
* 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 the "Oracle America, 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.
*/
/*
* 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(
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;
/* VARIABLES PROTECTED BY xprtlist_lock: xprtlist */
if ((handle = __rpc_setconf(nettype)) == NULL) {
warnx("%s: unknown protocol %s", __func__, nettype);
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("%s: could not register prog %u "
"vers %u on %s", __func__,
(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 = malloc(sizeof(*l));
if (l == NULL) {
warn("%s: out of memory", __func__);
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(
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("%s: invalid netconfig structure for prog %u vers %u",
__func__, (unsigned)prognum, (unsigned)versnum);
return (NULL);
}
xprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
if (xprt == NULL) {
return (NULL);
}
(void) rpcb_unset(prognum, versnum, __UNCONST(nconf));
if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
warnx("%s: Could not register prog %u vers %u on %s",
__func__, (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(
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("%s: invalid netconfig", __func__);
return (NULL);
}
fd = __rpc_nconf2fd(nconf);
if (fd == -1) {
warnx("%s: could not open connection for %s", __func__,
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("%s: could not get transport information",
__func__);
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) {
warn( "%s: could not bind to anonymous "
"port", __func__);
goto freedata;
}
}
if (si.si_socktype != SOCK_DGRAM &&
listen(fd, SOMAXCONN) == -1) {
warnx("%s: could not listen at anonymous port",
__func__);
goto freedata;
}
} else {
if (bind(fd,
(struct sockaddr *)bindaddr->addr.buf,
(socklen_t)si.si_alen) < 0) {
warnx("%s: could not bind to requested address",
__func__);
goto freedata;
}
if (si.si_socktype != SOCK_DGRAM &&
listen(fd, (int)bindaddr->qlen) == -1) {
warnx("%s: could not listen at requested "
"address", __func__);
goto freedata;
}
}
}
/*
* 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("%s: bad service type %u", __func__, si.si_socktype);
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);
