--- /dev/null
+#ifndef lint
+static char sfs_clnt_tcp_c_id[] = "@(#)clnt_tcp.c 2.1 97/10/23";
+#endif
+/* @(#)clnt_tcp.c 2.2 88/08/01 4.0 RPCSRC */
+/*
+ * Copyright (c) 1992-1997,2001 by Standard Performance Evaluation Corporation
+ * All rights reserved.
+ * Standard Performance Evaluation Corporation (SPEC)
+ * 6585 Merchant Place, Suite 100
+ * Warrenton, VA 20187
+ *
+ * This product contains benchmarks acquired from several sources who
+ * understand and agree with SPEC's goal of creating fair and objective
+ * benchmarks to measure computer performance.
+ *
+ * This copyright notice is placed here only to protect SPEC in the
+ * event the source is misused in any manner that is contrary to the
+ * spirit, the goals and the intent of SPEC.
+ *
+ * The source code is provided to the user or company under the license
+ * agreement for the SPEC Benchmark Suite for this product.
+ */
+/*
+ * 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
+ */
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)clnt_tcp.c 1.37 87/10/05 Copyr 1984 Sun Micro";
+#endif
+
+/*
+ * clnt_tcp.c, Implements a TCP/IP based, client side RPC.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * TCP based RPC supports 'batched calls'.
+ * A sequence of calls may be batched-up in a send buffer. The rpc call
+ * return immediately to the client even though the call was not necessarily
+ * sent. The batching occurs if the results' xdr routine is NULL (0) AND
+ * the rpc timeout value is zero (see clnt.h, rpc).
+ *
+ * Clients should NOT casually batch calls that in fact return results; that is,
+ * the server side should be aware that a call is batched and not produce any
+ * return message. Batched calls that produce many result messages can
+ * deadlock (netlock) the client and the server....
+ *
+ * Now go hang yourself.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include "rpc/rpc.h"
+#include "rpc/osdep.h"
+#include <netdb.h>
+#include <errno.h>
+#include "rpc/pmap_clnt.h"
+
+#define MCALL_MSG_SIZE 24
+
+struct ct_data {
+ int ct_sock;
+ bool_t ct_closeit;
+ struct timeval ct_wait;
+ bool_t ct_waitset; /* wait set by clnt_control? */
+ struct sockaddr_in ct_addr;
+ struct rpc_err ct_error;
+ char ct_mcall[MCALL_MSG_SIZE]; /* marshalled callmsg */
+ uint_t ct_mpos; /* pos after marshal */
+ XDR ct_xdrs;
+};
+
+static int readtcp(struct ct_data *, char *, int);
+static int writetcp(struct ct_data *, char *, int);
+
+static enum clnt_stat clnttcp_call(CLIENT *, uint32_t, xdrproc_t, void *,
+ xdrproc_t, void *, struct timeval);
+static void clnttcp_abort(CLIENT *);
+static void clnttcp_geterr(CLIENT *, struct rpc_err *);
+static bool_t clnttcp_freeres(CLIENT *, xdrproc_t, void *);
+static bool_t clnttcp_control(CLIENT *, uint_t, void *);
+static void clnttcp_destroy(CLIENT *h);
+static bool_t clnttcp_getreply(CLIENT *, xdrproc_t, void *,
+ int, uint32_t *, uint32_t *, struct timeval *);
+static int clnttcp_poll(CLIENT *, uint32_t);
+
+
+static struct clnt_ops tcp_ops = {
+ clnttcp_call,
+ clnttcp_abort,
+ clnttcp_geterr,
+ clnttcp_freeres,
+ clnttcp_destroy,
+ clnttcp_control,
+ clnttcp_getreply,
+ clnttcp_poll
+};
+
+/*
+ * Create a client handle for a tcp/ip connection.
+ * If *sockp<0, *sockp is set to a newly created TCP socket and it is
+ * connected to raddr. If *sockp non-negative then
+ * raddr is ignored. The rpc/tcp package does buffering
+ * similar to stdio, so the client must pick send and receive buffer sizes,];
+ * 0 => use the default.
+ * If raddr->sin_port is 0, then a binder on the remote machine is
+ * consulted for the right port number.
+ * NB: *sockp is copied into a private area.
+ * NB: It is the clients responsibility to close *sockp.
+ * NB: The rpch->cl_auth is set null authentication. Caller may wish to set this
+ * something more useful.
+ */
+CLIENT *
+clnttcp_create(
+ struct sockaddr_in *raddr,
+ uint32_t prog,
+ uint32_t vers,
+ int *sockp,
+ uint_t sendsz,
+ uint_t recvsz)
+{
+ CLIENT *h;
+ struct ct_data *ct;
+ struct timeval now;
+ struct rpc_msg call_msg;
+
+ h = (CLIENT *)mem_alloc(sizeof(CLIENT));
+ if (h == NULL) {
+ (void)fprintf(stderr, "clnttcp_create: out of memory\n");
+ rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+ rpc_createerr.cf_error.re_errno = errno;
+ goto fooy;
+ }
+ ct = (struct ct_data *)mem_alloc(sizeof(struct ct_data));
+ if (ct == NULL) {
+ (void)fprintf(stderr, "clnttcp_create: out of memory\n");
+ rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+ rpc_createerr.cf_error.re_errno = errno;
+ goto fooy;
+ }
+
+ /*
+ * If no port number given ask the pmap for one
+ */
+ if (raddr->sin_port == 0) {
+ uint16_t port;
+ if ((port = pmap_getport(raddr, prog, vers, IPPROTO_TCP)) == 0) {
+ mem_free((void *)ct, sizeof(struct ct_data));
+ mem_free((void *)h, sizeof(CLIENT));
+ return ((CLIENT *)NULL);
+ }
+ raddr->sin_port = htons(port);
+ }
+
+ /*
+ * If no socket given, open one
+ */
+ if (*sockp < 0) {
+ *sockp = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ (void)bindresvport(*sockp, (struct sockaddr_in *)0);
+ if ((*sockp < 0)
+ || (connect(*sockp, (struct sockaddr *)raddr,
+ sizeof(struct sockaddr_in)) < 0)) {
+ rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+ rpc_createerr.cf_error.re_errno = errno;
+ (void)close(*sockp);
+ goto fooy;
+ }
+ ct->ct_closeit = TRUE;
+ } else {
+ ct->ct_closeit = FALSE;
+ }
+
+ /*
+ * Set up private data struct
+ */
+ ct->ct_sock = *sockp;
+ ct->ct_wait.tv_usec = 0;
+ ct->ct_waitset = FALSE;
+ ct->ct_addr = *raddr;
+
+ /*
+ * Initialize call message
+ */
+ (void)gettimeofday(&now, (struct timezone *)0);
+ call_msg.rm_xid = getpid() ^ now.tv_sec ^ now.tv_usec;
+ call_msg.rm_direction = CALL;
+ call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
+ call_msg.rm_call.cb_prog = prog;
+ call_msg.rm_call.cb_vers = vers;
+
+ /*
+ * pre-serialize the staic part of the call msg and stash it away
+ */
+ xdrmem_create(&(ct->ct_xdrs), ct->ct_mcall, MCALL_MSG_SIZE,
+ XDR_ENCODE);
+ if (! xdr_callhdr(&(ct->ct_xdrs), &call_msg)) {
+ if (ct->ct_closeit) {
+ (void)close(*sockp);
+ }
+ goto fooy;
+ }
+ ct->ct_mpos = XDR_GETPOS(&(ct->ct_xdrs));
+ XDR_DESTROY(&(ct->ct_xdrs));
+
+ /*
+ * Create a client handle which uses xdrrec for serialization
+ * and authnone for authentication.
+ */
+ xdrrec_create(&(ct->ct_xdrs), sendsz, recvsz,
+ (void *)ct, readtcp, writetcp);
+ h->cl_ops = &tcp_ops;
+ h->cl_private = (char *) ct;
+ h->cl_auth = authnone_create();
+ return (h);
+
+fooy:
+ /*
+ * Something goofed, free stuff and barf
+ */
+ mem_free((void *)ct, sizeof(struct ct_data));
+ mem_free((void *)h, sizeof(CLIENT));
+ return ((CLIENT *)NULL);
+}
+
+static enum clnt_stat
+clnttcp_call(
+ CLIENT *h,
+ uint32_t proc,
+ xdrproc_t xdr_args,
+ void * args_ptr,
+ xdrproc_t xdr_results,
+ void * results_ptr,
+ struct timeval timeout)
+{
+ struct ct_data *ct = (struct ct_data *) h->cl_private;
+ XDR *xdrs = &(ct->ct_xdrs);
+ struct rpc_msg reply_msg;
+ uint32_t x_id;
+ uint32_t *msg_x_id = (uint32_t *)(ct->ct_mcall); /* yuk */
+ bool_t shipnow;
+ int refreshes = 2;
+
+ if (!ct->ct_waitset) {
+ ct->ct_wait = timeout;
+ }
+
+ shipnow =
+ (xdr_results == (xdrproc_t)0 && timeout.tv_sec == 0
+ && timeout.tv_usec == 0) ? FALSE : TRUE;
+
+call_again:
+ xdrs->x_op = XDR_ENCODE;
+ ct->ct_error.re_status = RPC_SUCCESS;
+ x_id = ntohl(--(*msg_x_id));
+ if ((! XDR_PUTBYTES(xdrs, ct->ct_mcall, ct->ct_mpos)) ||
+ (! XDR_PUTLONG(xdrs, (int32_t *)&proc)) ||
+ (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
+ (! (*xdr_args)(xdrs, args_ptr))) {
+ if (ct->ct_error.re_status == RPC_SUCCESS)
+ ct->ct_error.re_status = RPC_CANTENCODEARGS;
+ (void)xdrrec_endofrecord(xdrs, TRUE);
+ return (ct->ct_error.re_status);
+ }
+ if (! xdrrec_endofrecord(xdrs, shipnow))
+ return (ct->ct_error.re_status = RPC_CANTSEND);
+ if (! shipnow)
+ return (RPC_SUCCESS);
+ /*
+ * Hack to provide rpc-based message passing
+ */
+ if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
+ return(ct->ct_error.re_status = RPC_TIMEDOUT);
+ }
+
+
+ /*
+ * Keep receiving until we get a valid transaction id
+ */
+ xdrs->x_op = XDR_DECODE;
+ /* CONSTCOND */
+ while (TRUE) {
+ reply_msg.acpted_rply.ar_verf = _null_auth;
+ reply_msg.acpted_rply.ar_results.where = NULL;
+ reply_msg.acpted_rply.ar_results.proc = xdr_void;
+ if (! xdrrec_skiprecord(xdrs))
+ return (ct->ct_error.re_status);
+ /* now decode and validate the response header */
+ if (! xdr_replymsg(xdrs, &reply_msg)) {
+ if (ct->ct_error.re_status == RPC_SUCCESS)
+ continue;
+ return (ct->ct_error.re_status);
+ }
+ if (reply_msg.rm_xid == x_id)
+ break;
+ }
+
+ /*
+ * process header
+ */
+ _seterr_reply(&reply_msg, &(ct->ct_error));
+ if (ct->ct_error.re_status == RPC_SUCCESS) {
+ if (! AUTH_VALIDATE(h->cl_auth, &reply_msg.acpted_rply.ar_verf)) {
+ ct->ct_error.re_status = RPC_AUTHERROR;
+ ct->ct_error.re_why = AUTH_INVALIDRESP;
+ } else if (! (*xdr_results)(xdrs, results_ptr)) {
+ if (ct->ct_error.re_status == RPC_SUCCESS)
+ ct->ct_error.re_status = RPC_CANTDECODERES;
+ }
+ /* free verifier ... */
+ if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
+ xdrs->x_op = XDR_FREE;
+ (void)xdr_opaque_auth(xdrs, &(reply_msg.acpted_rply.ar_verf));
+ }
+ } /* end successful completion */
+ else {
+ /* maybe our credentials need to be refreshed ... */
+ if (refreshes-- && AUTH_REFRESH(h->cl_auth))
+ goto call_again;
+ } /* end of unsuccessful completion */
+ return (ct->ct_error.re_status);
+}
+
+static void
+clnttcp_geterr(
+ CLIENT *h,
+ struct rpc_err *errp)
+{
+ struct ct_data *ct =
+ (struct ct_data *) h->cl_private;
+
+ *errp = ct->ct_error;
+}
+
+static bool_t
+clnttcp_freeres(
+ CLIENT *cl,
+ xdrproc_t xdr_res,
+ void * res_ptr)
+{
+ struct ct_data *ct = (struct ct_data *)cl->cl_private;
+ XDR *xdrs = &(ct->ct_xdrs);
+
+ xdrs->x_op = XDR_FREE;
+ return ((*xdr_res)(xdrs, res_ptr));
+}
+
+/* ARGSUSED */
+static void
+clnttcp_abort(CLIENT *c)
+{
+}
+
+static bool_t
+clnttcp_control(
+ CLIENT *cl,
+ uint_t request,
+ void *info)
+{
+ struct ct_data *ct = (struct ct_data *)cl->cl_private;
+
+ switch (request) {
+ case CLSET_TIMEOUT:
+ ct->ct_wait = *(struct timeval *)info;
+ ct->ct_waitset = TRUE;
+ break;
+ case CLGET_TIMEOUT:
+ *(struct timeval *)info = ct->ct_wait;
+ break;
+ case CLGET_SERVER_ADDR:
+ *(struct sockaddr_in *)info = ct->ct_addr;
+ break;
+ default:
+ return (FALSE);
+ }
+ return (TRUE);
+}
+
+
+static void
+clnttcp_destroy(
+ CLIENT *h)
+{
+ struct ct_data *ct =
+ (struct ct_data *) h->cl_private;
+
+ if (ct->ct_closeit) {
+ (void)close(ct->ct_sock);
+ }
+ XDR_DESTROY(&(ct->ct_xdrs));
+ mem_free((void *)ct, sizeof(struct ct_data));
+ mem_free((void *)h, sizeof(CLIENT));
+}
+
+/*
+ * Interface between xdr serializer and tcp connection.
+ * Behaves like the system calls, read & write, but keeps some error state
+ * around for the rpc level.
+ */
+static int
+readtcp(
+ struct ct_data *ct,
+ char *buf,
+ int len)
+{
+#ifdef FD_SETSIZE
+ fd_set mask;
+ fd_set readfds;
+
+ if (len == 0)
+ return (0);
+ FD_ZERO(&mask);
+ FD_SET(ct->ct_sock, &mask);
+#else
+ int mask = 1 << (ct->ct_sock);
+ int readfds;
+
+ if (len == 0)
+ return (0);
+
+#endif /* def FD_SETSIZE */
+ /* CONSTCOND */
+ while (TRUE) {
+ readfds = mask;
+ switch (select(_rpc_dtablesize(), &readfds, NULL, NULL,
+ &(ct->ct_wait))) {
+ case 0:
+ ct->ct_error.re_status = RPC_TIMEDOUT;
+ return (-1);
+
+ case -1:
+ if (errno == EINTR)
+ continue;
+ ct->ct_error.re_status = RPC_CANTRECV;
+ ct->ct_error.re_errno = errno;
+ return (-1);
+ }
+ break;
+ }
+ switch (len = read(ct->ct_sock, buf, len)) {
+
+ case 0:
+ /* premature eof */
+ ct->ct_error.re_errno = ECONNRESET;
+ ct->ct_error.re_status = RPC_CANTRECV;
+ len = -1; /* it's really an error */
+ break;
+
+ case -1:
+ ct->ct_error.re_errno = errno;
+ ct->ct_error.re_status = RPC_CANTRECV;
+ break;
+ }
+ return (len);
+}
+
+static int
+writetcp(
+ struct ct_data *ct,
+ char *buf,
+ int len)
+{
+ int i, cnt;
+
+ for (cnt = len; cnt > 0; cnt -= i, buf += i) {
+ if ((i = write(ct->ct_sock, buf, cnt)) == -1) {
+ ct->ct_error.re_errno = errno;
+ ct->ct_error.re_status = RPC_CANTSEND;
+ return (-1);
+ }
+ }
+ return (len);
+}
+
+/* ARGSUSED */
+static bool_t
+clnttcp_getreply(
+ CLIENT *cl,
+ xdrproc_t xproc,
+ void *xres,
+ int cnt,
+ uint32_t *xids,
+ uint32_t *xid,
+ struct timeval *tv)
+{
+ return (FALSE);
+}
+
+/* ARGSUSED */
+static int
+clnttcp_poll(
+ CLIENT *cl,
+ uint32_t usec)
+{
+ return (-1);
+}
+
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