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diff --git a/src/svc_simple.c b/src/svc_simple.c
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+/*
+ * 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.
+ */
+
+
+/*
+ * svc_simple.c
+ * Simplified front end to rpc.
+ */
+
+/*
+ * This interface creates a virtual listener for all the services
+ * started thru rpc_reg(). It listens on the same endpoint for
+ * all the services and then executes the corresponding service
+ * for the given prognum and procnum.
+ */
+#include <pthread.h>
+#include <reentrant.h>
+#include <sys/types.h>
+#include <rpc/rpc.h>
+#include <rpc/nettype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <err.h>
+
+#include "rpc_com.h"
+
+static void universal(struct svc_req *, SVCXPRT *);
+
+static struct proglst {
+ char *(*p_progname)(char *);
+ rpcprog_t p_prognum;
+ rpcvers_t p_versnum;
+ rpcproc_t p_procnum;
+ SVCXPRT *p_transp;
+ char *p_netid;
+ char *p_xdrbuf;
+ int p_recvsz;
+ xdrproc_t p_inproc, p_outproc;
+ struct proglst *p_nxt;
+} *proglst;
+
+static const char rpc_reg_err[] = "%s: %s";
+static const char rpc_reg_msg[] = "rpc_reg: ";
+static const char __reg_err1[] = "can't find appropriate transport";
+static const char __reg_err2[] = "can't get protocol info";
+static const char __reg_err3[] = "unsupported transport size";
+static const char __no_mem_str[] = "out of memory";
+
+/*
+ * For simplified, easy to use kind of rpc interfaces.
+ * nettype indicates the type of transport on which the service will be
+ * listening. Used for conservation of the system resource. Only one
+ * handle is created for all the services (actually one of each netid)
+ * and same xdrbuf is used for same netid. The size of the arguments
+ * is also limited by the recvsize for that transport, even if it is
+ * a COTS transport. This may be wrong, but for cases like these, they
+ * should not use the simplified interfaces like this.
+ */
+
+int
+rpc_reg(prognum, versnum, procnum, progname, inproc, outproc, nettype)
+ rpcprog_t prognum; /* program number */
+ rpcvers_t versnum; /* version number */
+ rpcproc_t procnum; /* procedure number */
+ char *(*progname)(char *); /* Server routine */
+ xdrproc_t inproc, outproc; /* in/out XDR procedures */
+ char *nettype; /* nettype */
+{
+ struct netconfig *nconf;
+ int done = FALSE;
+ void *handle;
+ extern mutex_t proglst_lock;
+
+ if (procnum == NULLPROC) {
+ warnx("%s can't reassign procedure number %u", rpc_reg_msg,
+ NULLPROC);
+ return (-1);
+ }
+
+ if (nettype == NULL)
+ nettype = "netpath"; /* The default behavior */
+ if ((handle = __rpc_setconf(nettype)) == NULL) {
+ warnx(rpc_reg_err, rpc_reg_msg, __reg_err1);
+ return (-1);
+ }
+/* VARIABLES PROTECTED BY proglst_lock: proglst */
+ mutex_lock(&proglst_lock);
+ while ((nconf = __rpc_getconf(handle)) != NULL) {
+ struct proglst *pl;
+ SVCXPRT *svcxprt;
+ int madenow;
+ u_int recvsz;
+ char *xdrbuf;
+ char *netid;
+
+ madenow = FALSE;
+ svcxprt = NULL;
+ recvsz = 0;
+ xdrbuf = netid = NULL;
+ for (pl = proglst; pl; pl = pl->p_nxt) {
+ if (strcmp(pl->p_netid, nconf->nc_netid) == 0) {
+ svcxprt = pl->p_transp;
+ xdrbuf = pl->p_xdrbuf;
+ recvsz = pl->p_recvsz;
+ netid = pl->p_netid;
+ break;
+ }
+ }
+
+ if (svcxprt == NULL) {
+ struct __rpc_sockinfo si;
+
+ svcxprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
+ if (svcxprt == NULL)
+ continue;
+ if (!__rpc_fd2sockinfo(svcxprt->xp_fd, &si)) {
+ warnx(rpc_reg_err, rpc_reg_msg, __reg_err2);
+ SVC_DESTROY(svcxprt);
+ continue;
+ }
+ recvsz = __rpc_get_t_size(si.si_af, si.si_proto, 0);
+ if (recvsz == 0) {
+ warnx(rpc_reg_err, rpc_reg_msg, __reg_err3);
+ SVC_DESTROY(svcxprt);
+ continue;
+ }
+ if (((xdrbuf = malloc((unsigned)recvsz)) == NULL) ||
+ ((netid = strdup(nconf->nc_netid)) == NULL)) {
+ warnx(rpc_reg_err, rpc_reg_msg, __no_mem_str);
+ SVC_DESTROY(svcxprt);
+ free(xdrbuf);
+ break;
+ }
+ madenow = TRUE;
+ }
+ /*
+ * Check if this (program, version, netid) had already been
+ * registered. The check may save a few RPC calls to rpcbind
+ */
+ for (pl = proglst; pl; pl = pl->p_nxt)
+ if ((pl->p_prognum == prognum) &&
+ (pl->p_versnum == versnum) &&
+ (strcmp(pl->p_netid, netid) == 0))
+ break;
+ if (pl == NULL) { /* Not yet */
+ (void) rpcb_unset(prognum, versnum, nconf);
+ } else {
+ /* so that svc_reg does not call rpcb_set() */
+ nconf = NULL;
+ }
+
+ if (!svc_reg(svcxprt, prognum, versnum, universal, nconf)) {
+ warnx("%s couldn't register prog %u vers %u for %s",
+ rpc_reg_msg, (unsigned)prognum,
+ (unsigned)versnum, netid);
+ if (madenow) {
+ SVC_DESTROY(svcxprt);
+ free(xdrbuf);
+ free(netid);
+ }
+ continue;
+ }
+
+ pl = malloc(sizeof (struct proglst));
+ if (pl == NULL) {
+ warnx(rpc_reg_err, rpc_reg_msg, __no_mem_str);
+ if (madenow) {
+ SVC_DESTROY(svcxprt);
+ free(xdrbuf);
+ free(netid);
+ }
+ break;
+ }
+ pl->p_progname = progname;
+ pl->p_prognum = prognum;
+ pl->p_versnum = versnum;
+ pl->p_procnum = procnum;
+ pl->p_inproc = inproc;
+ pl->p_outproc = outproc;
+ pl->p_transp = svcxprt;
+ pl->p_xdrbuf = xdrbuf;
+ pl->p_recvsz = recvsz;
+ pl->p_netid = netid;
+ pl->p_nxt = proglst;
+ proglst = pl;
+ done = TRUE;
+ }
+ __rpc_endconf(handle);
+ mutex_unlock(&proglst_lock);
+
+ if (done == FALSE) {
+ warnx("%s cant find suitable transport for %s",
+ rpc_reg_msg, nettype);
+ return (-1);
+ }
+ return (0);
+}
+
+/*
+ * The universal handler for the services registered using registerrpc.
+ * It handles both the connectionless and the connection oriented cases.
+ */
+
+static void
+universal(rqstp, transp)
+ struct svc_req *rqstp;
+ SVCXPRT *transp;
+{
+ rpcprog_t prog;
+ rpcvers_t vers;
+ rpcproc_t proc;
+ char *outdata;
+ char *xdrbuf;
+ struct proglst *pl;
+ extern mutex_t proglst_lock;
+
+ /*
+ * enforce "procnum 0 is echo" convention
+ */
+ if (rqstp->rq_proc == NULLPROC) {
+ if (svc_sendreply(transp, (xdrproc_t) xdr_void, NULL) ==
+ FALSE) {
+ warnx("svc_sendreply failed");
+ }
+ return;
+ }
+ prog = rqstp->rq_prog;
+ vers = rqstp->rq_vers;
+ proc = rqstp->rq_proc;
+ mutex_lock(&proglst_lock);
+ for (pl = proglst; pl; pl = pl->p_nxt)
+ if (pl->p_prognum == prog && pl->p_procnum == proc &&
+ pl->p_versnum == vers &&
+ (strcmp(pl->p_netid, transp->xp_netid) == 0)) {
+ /* decode arguments into a CLEAN buffer */
+ xdrbuf = pl->p_xdrbuf;
+ /* Zero the arguments: reqd ! */
+ (void) memset(xdrbuf, 0, sizeof (pl->p_recvsz));
+ /*
+ * Assuming that sizeof (xdrbuf) would be enough
+ * for the arguments; if not then the program
+ * may bomb. BEWARE!
+ */
+ if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) {
+ svcerr_decode(transp);
+ mutex_unlock(&proglst_lock);
+ return;
+ }
+ outdata = (*(pl->p_progname))(xdrbuf);
+ if (outdata == NULL &&
+ pl->p_outproc != (xdrproc_t) xdr_void){
+ /* there was an error */
+ mutex_unlock(&proglst_lock);
+ return;
+ }
+ if (!svc_sendreply(transp, pl->p_outproc, outdata)) {
+ warnx(
+ "rpc: rpc_reg trouble replying to prog %u vers %u",
+ (unsigned)prog, (unsigned)vers);
+ mutex_unlock(&proglst_lock);
+ return;
+ }
+ /* free the decoded arguments */
+ (void)svc_freeargs(transp, pl->p_inproc, xdrbuf);
+ mutex_unlock(&proglst_lock);
+ return;
+ }
+ mutex_unlock(&proglst_lock);
+ /* This should never happen */
+ warnx("rpc: rpc_reg: never registered prog %u vers %u",
+ (unsigned)prog, (unsigned)vers);
+ return;
+}
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