summaryrefslogtreecommitdiff
path: root/libc/inet/rpc/clnt_tcp.c
diff options
context:
space:
mode:
Diffstat (limited to 'libc/inet/rpc/clnt_tcp.c')
-rw-r--r--libc/inet/rpc/clnt_tcp.c518
1 files changed, 0 insertions, 518 deletions
diff --git a/libc/inet/rpc/clnt_tcp.c b/libc/inet/rpc/clnt_tcp.c
deleted file mode 100644
index 7046057ab..000000000
--- a/libc/inet/rpc/clnt_tcp.c
+++ /dev/null
@@ -1,518 +0,0 @@
-/* @(#)clnt_tcp.c 2.2 88/08/01 4.0 RPCSRC */
-/*
- * 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 0
-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 <netdb.h>
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-#include "rpc_private.h"
-#include <sys/poll.h>
-#include <sys/socket.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 */
- u_int ct_mpos; /* pos after marshal */
- XDR ct_xdrs;
- };
-
-static int readtcp (char *, char *, int);
-static int writetcp (char *, char *, int);
-
-static enum clnt_stat clnttcp_call (CLIENT *, u_long, xdrproc_t, caddr_t,
- xdrproc_t, caddr_t, struct timeval);
-static void clnttcp_abort (void);
-static void clnttcp_geterr (CLIENT *, struct rpc_err *);
-static bool_t clnttcp_freeres (CLIENT *, xdrproc_t, caddr_t);
-static bool_t clnttcp_control (CLIENT *, int, char *);
-static void clnttcp_destroy (CLIENT *);
-
-static const struct clnt_ops tcp_ops =
-{
- clnttcp_call,
- clnttcp_abort,
- clnttcp_geterr,
- clnttcp_freeres,
- clnttcp_destroy,
- clnttcp_control
-};
-
-/*
- * 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, u_long prog, u_long vers,
- int *sockp, u_int sendsz, u_int recvsz)
-{
- CLIENT *h;
- struct ct_data *ct;
- struct rpc_msg call_msg;
-
- h = (CLIENT *) mem_alloc (sizeof (*h));
- ct = (struct ct_data *) mem_alloc (sizeof (*ct));
- if (h == NULL || ct == NULL)
- {
- struct rpc_createerr *ce = &get_rpc_createerr ();
- (void) fputs ("clnttcp_create: out of memory\n", stderr);
- ce->cf_stat = RPC_SYSTEMERROR;
- ce->cf_error.re_errno = ENOMEM;
- goto fooy;
- }
-
- /*
- * If no port number given ask the pmap for one
- */
- if (raddr->sin_port == 0)
- {
- u_short port;
- if ((port = pmap_getport (raddr, prog, vers, IPPROTO_TCP)) == 0)
- {
- mem_free ((caddr_t) ct, sizeof (struct ct_data));
- mem_free ((caddr_t) 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 (*raddr)) < 0))
- {
- struct rpc_createerr *ce = &get_rpc_createerr ();
- ce->cf_stat = RPC_SYSTEMERROR;
- ce->cf_error.re_errno = errno;
- if (*sockp >= 0)
- (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
- */
- call_msg.rm_xid = _create_xid ();
- 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 static 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,
- (caddr_t) ct, readtcp, writetcp);
- h->cl_ops = &tcp_ops;
- h->cl_private = (caddr_t) ct;
- h->cl_auth = authnone_create ();
- return h;
-
-fooy:
- /*
- * Something goofed, free stuff and barf
- */
- mem_free ((caddr_t) ct, sizeof (struct ct_data));
- mem_free ((caddr_t) h, sizeof (CLIENT));
- return ((CLIENT *) NULL);
-}
-libc_hidden_def(clnttcp_create)
-
-static enum clnt_stat
-clnttcp_call (CLIENT *h, u_long proc, xdrproc_t xdr_args, caddr_t args_ptr,
- xdrproc_t xdr_results, caddr_t 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;
- u_long x_id;
- u_int32_t *msg_x_id = (u_int32_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 && ct->ct_wait.tv_sec == 0
- && ct->ct_wait.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, (long *) &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 (ct->ct_wait.tv_sec == 0 && ct->ct_wait.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;
- 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 = (xdrproc_t)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 ((u_int32_t) reply_msg.rm_xid == (u_int32_t) 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, caddr_t 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);
-}
-
-static void
-clnttcp_abort (void)
-{
-}
-
-static bool_t
-clnttcp_control (CLIENT *cl, int request, char *info)
-{
- struct ct_data *ct = (struct ct_data *) cl->cl_private;
-
-
- switch (request)
- {
- case CLSET_FD_CLOSE:
- ct->ct_closeit = TRUE;
- break;
- case CLSET_FD_NCLOSE:
- ct->ct_closeit = FALSE;
- break;
- 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;
- case CLGET_FD:
- *(int *)info = ct->ct_sock;
- break;
- case CLGET_XID:
- /*
- * use the knowledge that xid is the
- * first element in the call structure *.
- * This will get the xid of the PREVIOUS call
- */
- *(u_long *)info = ntohl (*(u_long *)ct->ct_mcall);
- break;
- case CLSET_XID:
- /* This will set the xid of the NEXT call */
- *(u_long *)ct->ct_mcall = htonl (*(u_long *)info - 1);
- /* decrement by 1 as clnttcp_call() increments once */
- break;
- case CLGET_VERS:
- /*
- * This RELIES on the information that, in the call body,
- * the version number field is the fifth field from the
- * begining of the RPC header. MUST be changed if the
- * call_struct is changed
- */
- *(u_long *)info = ntohl (*(u_long *)(ct->ct_mcall +
- 4 * BYTES_PER_XDR_UNIT));
- break;
- case CLSET_VERS:
- *(u_long *)(ct->ct_mcall + 4 * BYTES_PER_XDR_UNIT)
- = htonl (*(u_long *)info);
- break;
- case CLGET_PROG:
- /*
- * This RELIES on the information that, in the call body,
- * the program number field is the field from the
- * begining of the RPC header. MUST be changed if the
- * call_struct is changed
- */
- *(u_long *)info = ntohl(*(u_long *)(ct->ct_mcall +
- 3 * BYTES_PER_XDR_UNIT));
- break;
- case CLSET_PROG:
- *(u_long *)(ct->ct_mcall + 3 * BYTES_PER_XDR_UNIT)
- = htonl(*(u_long *)info);
- break;
- /* The following are only possible with TI-RPC */
- case CLGET_RETRY_TIMEOUT:
- case CLSET_RETRY_TIMEOUT:
- case CLGET_SVC_ADDR:
- case CLSET_SVC_ADDR:
- case CLSET_PUSH_TIMOD:
- case CLSET_POP_TIMOD:
- 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 ((caddr_t) ct, sizeof (struct ct_data));
- mem_free ((caddr_t) 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 (char *ctptr, char *buf, int len)
-{
- struct ct_data *ct = (struct ct_data *)ctptr;
- struct pollfd fd;
- int milliseconds = (ct->ct_wait.tv_sec * 1000) +
- (ct->ct_wait.tv_usec / 1000);
-
- if (len == 0)
- return 0;
-
- fd.fd = ct->ct_sock;
- fd.events = POLLIN;
- while (TRUE)
- {
- switch (poll(&fd, 1, milliseconds))
- {
- 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 (char *ctptr, char *buf, int len)
-{
- int i, cnt;
- struct ct_data *ct = (struct ct_data*)ctptr;
-
- 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;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 22:34:15 +0000