|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* clnt_unix.c, Implements a TCP/IP based, client side RPC.
|
|
Packit |
6c4009 |
*
|
|
Packit |
6c4009 |
* Copyright (c) 2010, Oracle America, Inc.
|
|
Packit |
6c4009 |
*
|
|
Packit |
6c4009 |
* Redistribution and use in source and binary forms, with or without
|
|
Packit |
6c4009 |
* modification, are permitted provided that the following conditions are
|
|
Packit |
6c4009 |
* met:
|
|
Packit |
6c4009 |
*
|
|
Packit |
6c4009 |
* * Redistributions of source code must retain the above copyright
|
|
Packit |
6c4009 |
* notice, this list of conditions and the following disclaimer.
|
|
Packit |
6c4009 |
* * Redistributions in binary form must reproduce the above
|
|
Packit |
6c4009 |
* copyright notice, this list of conditions and the following
|
|
Packit |
6c4009 |
* disclaimer in the documentation and/or other materials
|
|
Packit |
6c4009 |
* provided with the distribution.
|
|
Packit |
6c4009 |
* * Neither the name of the "Oracle America, Inc." nor the names of its
|
|
Packit |
6c4009 |
* contributors may be used to endorse or promote products derived
|
|
Packit |
6c4009 |
* from this software without specific prior written permission.
|
|
Packit |
6c4009 |
*
|
|
Packit |
6c4009 |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
Packit |
6c4009 |
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
Packit |
6c4009 |
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
Packit |
6c4009 |
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
Packit |
6c4009 |
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
|
Packit |
6c4009 |
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
Packit |
6c4009 |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
|
Packit |
6c4009 |
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
Packit |
6c4009 |
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
Packit |
6c4009 |
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
Packit |
6c4009 |
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
Packit |
6c4009 |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
Packit |
6c4009 |
*
|
|
Packit |
6c4009 |
* TCP based RPC supports 'batched calls'.
|
|
Packit |
6c4009 |
* A sequence of calls may be batched-up in a send buffer. The rpc call
|
|
Packit |
6c4009 |
* return immediately to the client even though the call was not necessarily
|
|
Packit |
6c4009 |
* sent. The batching occurs if the results' xdr routine is NULL (0) AND
|
|
Packit |
6c4009 |
* the rpc timeout value is zero (see clnt.h, rpc).
|
|
Packit |
6c4009 |
*
|
|
Packit |
6c4009 |
* Clients should NOT casually batch calls that in fact return results; that is,
|
|
Packit |
6c4009 |
* the server side should be aware that a call is batched and not produce any
|
|
Packit |
6c4009 |
* return message. Batched calls that produce many result messages can
|
|
Packit |
6c4009 |
* deadlock (netlock) the client and the server....
|
|
Packit |
6c4009 |
*
|
|
Packit |
6c4009 |
* Now go hang yourself.
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <netdb.h>
|
|
Packit |
6c4009 |
#include <errno.h>
|
|
Packit |
6c4009 |
#include <stdio.h>
|
|
Packit |
6c4009 |
#include <unistd.h>
|
|
Packit |
6c4009 |
#include <libintl.h>
|
|
Packit |
6c4009 |
#include <rpc/rpc.h>
|
|
Packit |
6c4009 |
#include <sys/uio.h>
|
|
Packit |
6c4009 |
#include <sys/poll.h>
|
|
Packit |
6c4009 |
#include <sys/socket.h>
|
|
Packit |
6c4009 |
#include <rpc/pmap_clnt.h>
|
|
Packit |
6c4009 |
#include <wchar.h>
|
|
Packit |
6c4009 |
#include <shlib-compat.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
extern u_long _create_xid (void);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#define MCALL_MSG_SIZE 24
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
struct ct_data
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
int ct_sock;
|
|
Packit |
6c4009 |
bool_t ct_closeit;
|
|
Packit |
6c4009 |
struct timeval ct_wait;
|
|
Packit |
6c4009 |
bool_t ct_waitset; /* wait set by clnt_control? */
|
|
Packit |
6c4009 |
struct sockaddr_un ct_addr;
|
|
Packit |
6c4009 |
struct rpc_err ct_error;
|
|
Packit |
6c4009 |
char ct_mcall[MCALL_MSG_SIZE]; /* marshalled callmsg */
|
|
Packit |
6c4009 |
u_int ct_mpos; /* pos after marshal */
|
|
Packit |
6c4009 |
XDR ct_xdrs;
|
|
Packit |
6c4009 |
};
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static int readunix (char *, char *, int);
|
|
Packit |
6c4009 |
static int writeunix (char *, char *, int);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static enum clnt_stat clntunix_call (CLIENT *, u_long, xdrproc_t, caddr_t,
|
|
Packit |
6c4009 |
xdrproc_t, caddr_t, struct timeval);
|
|
Packit |
6c4009 |
static void clntunix_abort (void);
|
|
Packit |
6c4009 |
static void clntunix_geterr (CLIENT *, struct rpc_err *);
|
|
Packit |
6c4009 |
static bool_t clntunix_freeres (CLIENT *, xdrproc_t, caddr_t);
|
|
Packit |
6c4009 |
static bool_t clntunix_control (CLIENT *, int, char *);
|
|
Packit |
6c4009 |
static void clntunix_destroy (CLIENT *);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static const struct clnt_ops unix_ops =
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
clntunix_call,
|
|
Packit |
6c4009 |
clntunix_abort,
|
|
Packit |
6c4009 |
clntunix_geterr,
|
|
Packit |
6c4009 |
clntunix_freeres,
|
|
Packit |
6c4009 |
clntunix_destroy,
|
|
Packit |
6c4009 |
clntunix_control
|
|
Packit |
6c4009 |
};
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Create a client handle for a tcp/ip connection.
|
|
Packit |
6c4009 |
* If *sockp<0, *sockp is set to a newly created TCP socket and it is
|
|
Packit |
6c4009 |
* connected to raddr. If *sockp non-negative then
|
|
Packit |
6c4009 |
* raddr is ignored. The rpc/tcp package does buffering
|
|
Packit |
6c4009 |
* similar to stdio, so the client must pick send and receive buffer sizes,];
|
|
Packit |
6c4009 |
* 0 => use the default.
|
|
Packit |
6c4009 |
* If raddr->sin_port is 0, then a binder on the remote machine is
|
|
Packit |
6c4009 |
* consulted for the right port number.
|
|
Packit |
6c4009 |
* NB: *sockp is copied into a private area.
|
|
Packit |
6c4009 |
* NB: It is the clients responsibility to close *sockp.
|
|
Packit |
6c4009 |
* NB: The rpch->cl_auth is set null authentication. Caller may wish to set this
|
|
Packit |
6c4009 |
* something more useful.
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
CLIENT *
|
|
Packit |
6c4009 |
clntunix_create (struct sockaddr_un *raddr, u_long prog, u_long vers,
|
|
Packit |
6c4009 |
int *sockp, u_int sendsz, u_int recvsz)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
CLIENT *h;
|
|
Packit |
6c4009 |
struct ct_data *ct = (struct ct_data *) mem_alloc (sizeof (*ct));
|
|
Packit |
6c4009 |
struct rpc_msg call_msg;
|
|
Packit |
6c4009 |
int len;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
h = (CLIENT *) mem_alloc (sizeof (*h));
|
|
Packit |
6c4009 |
if (h == NULL || ct == NULL)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct rpc_createerr *ce = &get_rpc_createerr ();
|
|
Packit |
6c4009 |
(void) __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n"));
|
|
Packit |
6c4009 |
ce->cf_stat = RPC_SYSTEMERROR;
|
|
Packit |
6c4009 |
ce->cf_error.re_errno = ENOMEM;
|
|
Packit |
6c4009 |
goto fooy;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* If no socket given, open one
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
if (*sockp < 0)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
*sockp = __socket (AF_UNIX, SOCK_STREAM, 0);
|
|
Packit |
6c4009 |
len = strlen (raddr->sun_path) + sizeof (raddr->sun_family) + 1;
|
|
Packit |
6c4009 |
if (*sockp < 0
|
|
Packit |
6c4009 |
|| __connect (*sockp, (struct sockaddr *) raddr, len) < 0)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct rpc_createerr *ce = &get_rpc_createerr ();
|
|
Packit |
6c4009 |
ce->cf_stat = RPC_SYSTEMERROR;
|
|
Packit |
6c4009 |
ce->cf_error.re_errno = errno;
|
|
Packit |
6c4009 |
if (*sockp != -1)
|
|
Packit |
6c4009 |
__close (*sockp);
|
|
Packit |
6c4009 |
goto fooy;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
ct->ct_closeit = TRUE;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
ct->ct_closeit = FALSE;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Set up private data struct
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
ct->ct_sock = *sockp;
|
|
Packit |
6c4009 |
ct->ct_wait.tv_usec = 0;
|
|
Packit |
6c4009 |
ct->ct_waitset = FALSE;
|
|
Packit |
6c4009 |
ct->ct_addr = *raddr;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Initialize call message
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
call_msg.rm_xid = _create_xid ();
|
|
Packit |
6c4009 |
call_msg.rm_direction = CALL;
|
|
Packit |
6c4009 |
call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
|
|
Packit |
6c4009 |
call_msg.rm_call.cb_prog = prog;
|
|
Packit |
6c4009 |
call_msg.rm_call.cb_vers = vers;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* pre-serialize the static part of the call msg and stash it away
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
xdrmem_create (&(ct->ct_xdrs), ct->ct_mcall, MCALL_MSG_SIZE, XDR_ENCODE);
|
|
Packit |
6c4009 |
if (!xdr_callhdr (&(ct->ct_xdrs), &call_msg))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (ct->ct_closeit)
|
|
Packit |
6c4009 |
__close (*sockp);
|
|
Packit |
6c4009 |
goto fooy;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
ct->ct_mpos = XDR_GETPOS (&(ct->ct_xdrs));
|
|
Packit |
6c4009 |
XDR_DESTROY (&(ct->ct_xdrs));
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Create a client handle which uses xdrrec for serialization
|
|
Packit |
6c4009 |
* and authnone for authentication.
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
xdrrec_create (&(ct->ct_xdrs), sendsz, recvsz,
|
|
Packit |
6c4009 |
(caddr_t) ct, readunix, writeunix);
|
|
Packit |
6c4009 |
h->cl_ops = (struct clnt_ops *) &unix_ops;
|
|
Packit |
6c4009 |
h->cl_private = (caddr_t) ct;
|
|
Packit |
6c4009 |
h->cl_auth = authnone_create ();
|
|
Packit |
6c4009 |
return h;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
fooy:
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Something goofed, free stuff and barf
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
mem_free ((caddr_t) ct, sizeof (struct ct_data));
|
|
Packit |
6c4009 |
mem_free ((caddr_t) h, sizeof (CLIENT));
|
|
Packit |
6c4009 |
return (CLIENT *) NULL;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
libc_hidden_nolink_sunrpc (clntunix_create, GLIBC_2_1)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static enum clnt_stat
|
|
Packit |
6c4009 |
clntunix_call (CLIENT *h, u_long proc, xdrproc_t xdr_args, caddr_t args_ptr,
|
|
Packit |
6c4009 |
xdrproc_t xdr_results, caddr_t results_ptr,
|
|
Packit |
6c4009 |
struct timeval timeout)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct ct_data *ct = (struct ct_data *) h->cl_private;
|
|
Packit |
6c4009 |
XDR *xdrs = &(ct->ct_xdrs);
|
|
Packit |
6c4009 |
struct rpc_msg reply_msg;
|
|
Packit |
6c4009 |
u_long x_id;
|
|
Packit |
6c4009 |
uint32_t *msg_x_id = (uint32_t *) (ct->ct_mcall); /* yuk */
|
|
Packit |
6c4009 |
bool_t shipnow;
|
|
Packit |
6c4009 |
int refreshes = 2;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
if (!ct->ct_waitset)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
ct->ct_wait = timeout;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
shipnow =
|
|
Packit |
6c4009 |
(xdr_results == (xdrproc_t) 0 && ct->ct_wait.tv_sec == 0
|
|
Packit |
6c4009 |
&& ct->ct_wait.tv_usec == 0) ? FALSE : TRUE;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
call_again:
|
|
Packit |
6c4009 |
xdrs->x_op = XDR_ENCODE;
|
|
Packit |
6c4009 |
ct->ct_error.re_status = RPC_SUCCESS;
|
|
Packit |
6c4009 |
x_id = ntohl (--(*msg_x_id));
|
|
Packit |
6c4009 |
if ((!XDR_PUTBYTES (xdrs, ct->ct_mcall, ct->ct_mpos)) ||
|
|
Packit |
6c4009 |
(!XDR_PUTLONG (xdrs, (long *) &proc)) ||
|
|
Packit |
6c4009 |
(!AUTH_MARSHALL (h->cl_auth, xdrs)) ||
|
|
Packit |
6c4009 |
(!(*xdr_args) (xdrs, args_ptr)))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (ct->ct_error.re_status == RPC_SUCCESS)
|
|
Packit |
6c4009 |
ct->ct_error.re_status = RPC_CANTENCODEARGS;
|
|
Packit |
6c4009 |
(void) xdrrec_endofrecord (xdrs, TRUE);
|
|
Packit |
6c4009 |
return ct->ct_error.re_status;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
if (!xdrrec_endofrecord (xdrs, shipnow))
|
|
Packit |
6c4009 |
return ct->ct_error.re_status = RPC_CANTSEND;
|
|
Packit |
6c4009 |
if (!shipnow)
|
|
Packit |
6c4009 |
return RPC_SUCCESS;
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Hack to provide rpc-based message passing
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
if (ct->ct_wait.tv_sec == 0 && ct->ct_wait.tv_usec == 0)
|
|
Packit |
6c4009 |
return ct->ct_error.re_status = RPC_TIMEDOUT;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Keep receiving until we get a valid transaction id
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
xdrs->x_op = XDR_DECODE;
|
|
Packit |
6c4009 |
while (TRUE)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
reply_msg.acpted_rply.ar_verf = _null_auth;
|
|
Packit |
6c4009 |
reply_msg.acpted_rply.ar_results.where = NULL;
|
|
Packit |
6c4009 |
reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void;
|
|
Packit |
6c4009 |
if (!xdrrec_skiprecord (xdrs))
|
|
Packit |
6c4009 |
return ct->ct_error.re_status;
|
|
Packit |
6c4009 |
/* now decode and validate the response header */
|
|
Packit |
6c4009 |
if (!xdr_replymsg (xdrs, &reply_msg))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (ct->ct_error.re_status == RPC_SUCCESS)
|
|
Packit |
6c4009 |
continue;
|
|
Packit |
6c4009 |
return ct->ct_error.re_status;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
if (reply_msg.rm_xid == x_id)
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* process header
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
_seterr_reply (&reply_msg, &(ct->ct_error));
|
|
Packit |
6c4009 |
if (ct->ct_error.re_status == RPC_SUCCESS)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (!AUTH_VALIDATE (h->cl_auth, &reply_msg.acpted_rply.ar_verf))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
ct->ct_error.re_status = RPC_AUTHERROR;
|
|
Packit |
6c4009 |
ct->ct_error.re_why = AUTH_INVALIDRESP;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
else if (!(*xdr_results) (xdrs, results_ptr))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (ct->ct_error.re_status == RPC_SUCCESS)
|
|
Packit |
6c4009 |
ct->ct_error.re_status = RPC_CANTDECODERES;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
/* free verifier ... */
|
|
Packit |
6c4009 |
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
xdrs->x_op = XDR_FREE;
|
|
Packit |
6c4009 |
(void) xdr_opaque_auth (xdrs, &(reply_msg.acpted_rply.ar_verf));
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
} /* end successful completion */
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
/* maybe our credentials need to be refreshed ... */
|
|
Packit |
6c4009 |
if (refreshes-- && AUTH_REFRESH (h->cl_auth))
|
|
Packit |
6c4009 |
goto call_again;
|
|
Packit |
6c4009 |
} /* end of unsuccessful completion */
|
|
Packit |
6c4009 |
return ct->ct_error.re_status;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static void
|
|
Packit |
6c4009 |
clntunix_geterr (CLIENT *h, struct rpc_err *errp)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct ct_data *ct = (struct ct_data *) h->cl_private;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
*errp = ct->ct_error;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static bool_t
|
|
Packit |
6c4009 |
clntunix_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct ct_data *ct = (struct ct_data *) cl->cl_private;
|
|
Packit |
6c4009 |
XDR *xdrs = &(ct->ct_xdrs);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
xdrs->x_op = XDR_FREE;
|
|
Packit |
6c4009 |
return (*xdr_res) (xdrs, res_ptr);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static void
|
|
Packit |
6c4009 |
clntunix_abort (void)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static bool_t
|
|
Packit |
6c4009 |
clntunix_control (CLIENT *cl, int request, char *info)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct ct_data *ct = (struct ct_data *) cl->cl_private;
|
|
Packit |
6c4009 |
u_long ul;
|
|
Packit |
6c4009 |
uint32_t ui32;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
switch (request)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
case CLSET_FD_CLOSE:
|
|
Packit |
6c4009 |
ct->ct_closeit = TRUE;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLSET_FD_NCLOSE:
|
|
Packit |
6c4009 |
ct->ct_closeit = FALSE;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLSET_TIMEOUT:
|
|
Packit |
6c4009 |
ct->ct_wait = *(struct timeval *) info;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_TIMEOUT:
|
|
Packit |
6c4009 |
*(struct timeval *) info = ct->ct_wait;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_SERVER_ADDR:
|
|
Packit |
6c4009 |
*(struct sockaddr_un *) info = ct->ct_addr;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_FD:
|
|
Packit |
6c4009 |
*(int *)info = ct->ct_sock;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_XID:
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* use the knowledge that xid is the
|
|
Packit |
6c4009 |
* first element in the call structure *.
|
|
Packit |
6c4009 |
* This will get the xid of the PREVIOUS call
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
memcpy (&ui32, ct->ct_mcall, sizeof (ui32));
|
|
Packit |
6c4009 |
ul = ntohl (ui32);
|
|
Packit |
6c4009 |
memcpy (info, &ul, sizeof (ul));
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLSET_XID:
|
|
Packit |
6c4009 |
/* This will set the xid of the NEXT call */
|
|
Packit |
6c4009 |
memcpy (&ul, info, sizeof (ul));
|
|
Packit |
6c4009 |
ui32 = htonl (ul - 1);
|
|
Packit |
6c4009 |
memcpy (ct->ct_mcall, &ui32, sizeof (ui32));
|
|
Packit |
6c4009 |
/* decrement by 1 as clntunix_call() increments once */
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_VERS:
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* This RELIES on the information that, in the call body,
|
|
Packit |
6c4009 |
* the version number field is the fifth field from the
|
|
Packit |
6c4009 |
* beginning of the RPC header. MUST be changed if the
|
|
Packit |
6c4009 |
* call_struct is changed
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
memcpy (&ui32, ct->ct_mcall + 4 * BYTES_PER_XDR_UNIT, sizeof (ui32));
|
|
Packit |
6c4009 |
ul = ntohl (ui32);
|
|
Packit |
6c4009 |
memcpy (info, &ul, sizeof (ul));
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLSET_VERS:
|
|
Packit |
6c4009 |
memcpy (&ul, info, sizeof (ul));
|
|
Packit |
6c4009 |
ui32 = htonl (ul);
|
|
Packit |
6c4009 |
memcpy (ct->ct_mcall + 4 * BYTES_PER_XDR_UNIT, &ui32, sizeof (ui32));
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_PROG:
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* This RELIES on the information that, in the call body,
|
|
Packit |
6c4009 |
* the program number field is the field from the
|
|
Packit |
6c4009 |
* beginning of the RPC header. MUST be changed if the
|
|
Packit |
6c4009 |
* call_struct is changed
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
memcpy (&ui32, ct->ct_mcall + 3 * BYTES_PER_XDR_UNIT, sizeof (ui32));
|
|
Packit |
6c4009 |
ul = ntohl (ui32);
|
|
Packit |
6c4009 |
memcpy (info, &ul, sizeof (ul));
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLSET_PROG:
|
|
Packit |
6c4009 |
memcpy (&ul, info, sizeof (ul));
|
|
Packit |
6c4009 |
ui32 = htonl (ul);
|
|
Packit |
6c4009 |
memcpy (ct->ct_mcall + 3 * BYTES_PER_XDR_UNIT, &ui32, sizeof (ui32));
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
/* The following are only possible with TI-RPC */
|
|
Packit |
6c4009 |
case CLGET_RETRY_TIMEOUT:
|
|
Packit |
6c4009 |
case CLSET_RETRY_TIMEOUT:
|
|
Packit |
6c4009 |
case CLGET_SVC_ADDR:
|
|
Packit |
6c4009 |
case CLSET_SVC_ADDR:
|
|
Packit |
6c4009 |
case CLSET_PUSH_TIMOD:
|
|
Packit |
6c4009 |
case CLSET_POP_TIMOD:
|
|
Packit |
6c4009 |
default:
|
|
Packit |
6c4009 |
return FALSE;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
return TRUE;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static void
|
|
Packit |
6c4009 |
clntunix_destroy (CLIENT *h)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct ct_data *ct =
|
|
Packit |
6c4009 |
(struct ct_data *) h->cl_private;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
if (ct->ct_closeit)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
(void) __close (ct->ct_sock);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
XDR_DESTROY (&(ct->ct_xdrs));
|
|
Packit |
6c4009 |
mem_free ((caddr_t) ct, sizeof (struct ct_data));
|
|
Packit |
6c4009 |
mem_free ((caddr_t) h, sizeof (CLIENT));
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static int
|
|
Packit |
6c4009 |
__msgread (int sock, void *data, size_t cnt)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct iovec iov;
|
|
Packit |
6c4009 |
struct msghdr msg;
|
|
Packit |
6c4009 |
#ifdef SCM_CREDENTIALS
|
|
Packit |
6c4009 |
static char cm[CMSG_SPACE(sizeof (struct ucred))];
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
int len;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
iov.iov_base = data;
|
|
Packit |
6c4009 |
iov.iov_len = cnt;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
msg.msg_iov = &iov;
|
|
Packit |
6c4009 |
msg.msg_iovlen = 1;
|
|
Packit |
6c4009 |
msg.msg_name = NULL;
|
|
Packit |
6c4009 |
msg.msg_namelen = 0;
|
|
Packit |
6c4009 |
#ifdef SCM_CREDENTIALS
|
|
Packit |
6c4009 |
msg.msg_control = (caddr_t) &cm;
|
|
Packit |
6c4009 |
msg.msg_controllen = CMSG_SPACE(sizeof (struct ucred));
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
msg.msg_flags = 0;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#ifdef SO_PASSCRED
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
int on = 1;
|
|
Packit |
6c4009 |
if (__setsockopt (sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof (on)))
|
|
Packit |
6c4009 |
return -1;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
restart:
|
|
Packit |
6c4009 |
len = __recvmsg (sock, &msg, 0);
|
|
Packit |
6c4009 |
if (len >= 0)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (msg.msg_flags & MSG_CTRUNC || len == 0)
|
|
Packit |
6c4009 |
return 0;
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
return len;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
if (errno == EINTR)
|
|
Packit |
6c4009 |
goto restart;
|
|
Packit |
6c4009 |
return -1;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static int
|
|
Packit |
6c4009 |
__msgwrite (int sock, void *data, size_t cnt)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
#ifndef SCM_CREDENTIALS
|
|
Packit |
6c4009 |
/* We cannot implement this reliably. */
|
|
Packit |
6c4009 |
__set_errno (ENOSYS);
|
|
Packit |
6c4009 |
return -1;
|
|
Packit |
6c4009 |
#else
|
|
Packit |
6c4009 |
struct iovec iov;
|
|
Packit |
6c4009 |
struct msghdr msg;
|
|
Packit |
6c4009 |
struct cmsghdr *cmsg = alloca (CMSG_SPACE(sizeof (struct ucred)));
|
|
Packit |
6c4009 |
struct ucred cred;
|
|
Packit |
6c4009 |
int len;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* XXX I'm not sure, if gete?id() is always correct, or if we should use
|
|
Packit |
6c4009 |
get?id(). But since keyserv needs geteuid(), we have no other chance.
|
|
Packit |
6c4009 |
It would be much better, if the kernel could pass both to the server. */
|
|
Packit |
6c4009 |
cred.pid = __getpid ();
|
|
Packit |
6c4009 |
cred.uid = __geteuid ();
|
|
Packit |
6c4009 |
cred.gid = __getegid ();
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
memcpy (CMSG_DATA(cmsg), &cred, sizeof (struct ucred));
|
|
Packit |
6c4009 |
cmsg->cmsg_level = SOL_SOCKET;
|
|
Packit |
6c4009 |
cmsg->cmsg_type = SCM_CREDENTIALS;
|
|
Packit |
6c4009 |
cmsg->cmsg_len = sizeof(*cmsg) + sizeof(struct ucred);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
iov.iov_base = data;
|
|
Packit |
6c4009 |
iov.iov_len = cnt;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
msg.msg_iov = &iov;
|
|
Packit |
6c4009 |
msg.msg_iovlen = 1;
|
|
Packit |
6c4009 |
msg.msg_name = NULL;
|
|
Packit |
6c4009 |
msg.msg_namelen = 0;
|
|
Packit |
6c4009 |
msg.msg_control = cmsg;
|
|
Packit |
6c4009 |
msg.msg_controllen = CMSG_ALIGN(cmsg->cmsg_len);
|
|
Packit |
6c4009 |
msg.msg_flags = 0;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
restart:
|
|
Packit |
6c4009 |
len = __sendmsg (sock, &msg, 0);
|
|
Packit |
6c4009 |
if (len >= 0)
|
|
Packit |
6c4009 |
return len;
|
|
Packit |
6c4009 |
if (errno == EINTR)
|
|
Packit |
6c4009 |
goto restart;
|
|
Packit |
6c4009 |
return -1;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Interface between xdr serializer and unix connection.
|
|
Packit |
6c4009 |
* Behaves like the system calls, read & write, but keeps some error state
|
|
Packit |
6c4009 |
* around for the rpc level.
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
static int
|
|
Packit |
6c4009 |
readunix (char *ctptr, char *buf, int len)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct ct_data *ct = (struct ct_data *) ctptr;
|
|
Packit |
6c4009 |
struct pollfd fd;
|
|
Packit |
6c4009 |
int milliseconds = ((ct->ct_wait.tv_sec * 1000)
|
|
Packit |
6c4009 |
+ (ct->ct_wait.tv_usec / 1000));
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
if (len == 0)
|
|
Packit |
6c4009 |
return 0;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
fd.fd = ct->ct_sock;
|
|
Packit |
6c4009 |
fd.events = POLLIN;
|
|
Packit |
6c4009 |
while (TRUE)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
switch (__poll (&fd, 1, milliseconds))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
case 0:
|
|
Packit |
6c4009 |
ct->ct_error.re_status = RPC_TIMEDOUT;
|
|
Packit |
6c4009 |
return -1;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
case -1:
|
|
Packit |
6c4009 |
if (errno == EINTR)
|
|
Packit |
6c4009 |
continue;
|
|
Packit |
6c4009 |
ct->ct_error.re_status = RPC_CANTRECV;
|
|
Packit |
6c4009 |
ct->ct_error.re_errno = errno;
|
|
Packit |
6c4009 |
return -1;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
switch (len = __msgread (ct->ct_sock, buf, len))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
case 0:
|
|
Packit |
6c4009 |
/* premature eof */
|
|
Packit |
6c4009 |
ct->ct_error.re_errno = ECONNRESET;
|
|
Packit |
6c4009 |
ct->ct_error.re_status = RPC_CANTRECV;
|
|
Packit |
6c4009 |
len = -1; /* it's really an error */
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
case -1:
|
|
Packit |
6c4009 |
ct->ct_error.re_errno = errno;
|
|
Packit |
6c4009 |
ct->ct_error.re_status = RPC_CANTRECV;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
return len;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static int
|
|
Packit |
6c4009 |
writeunix (char *ctptr, char *buf, int len)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
int i, cnt;
|
|
Packit |
6c4009 |
struct ct_data *ct = (struct ct_data *) ctptr;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
for (cnt = len; cnt > 0; cnt -= i, buf += i)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if ((i = __msgwrite (ct->ct_sock, buf, cnt)) == -1)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
ct->ct_error.re_errno = errno;
|
|
Packit |
6c4009 |
ct->ct_error.re_status = RPC_CANTSEND;
|
|
Packit |
6c4009 |
return -1;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
return len;
|
|
Packit |
6c4009 |
}
|