|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* clnt_udp.c, Implements a UDP/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 |
|
|
Packit |
6c4009 |
#include <stdio.h>
|
|
Packit |
6c4009 |
#include <unistd.h>
|
|
Packit |
6c4009 |
#include <libintl.h>
|
|
Packit |
6c4009 |
#include <rpc/rpc.h>
|
|
Packit |
6c4009 |
#include <rpc/xdr.h>
|
|
Packit |
6c4009 |
#include <rpc/clnt.h>
|
|
Packit |
6c4009 |
#include <sys/poll.h>
|
|
Packit |
6c4009 |
#include <sys/socket.h>
|
|
Packit |
6c4009 |
#include <sys/ioctl.h>
|
|
Packit |
6c4009 |
#include <netdb.h>
|
|
Packit |
6c4009 |
#include <errno.h>
|
|
Packit |
6c4009 |
#include <stdint.h>
|
|
Packit |
6c4009 |
#include <rpc/pmap_clnt.h>
|
|
Packit |
6c4009 |
#include <net/if.h>
|
|
Packit |
6c4009 |
#include <ifaddrs.h>
|
|
Packit |
6c4009 |
#include <wchar.h>
|
|
Packit |
6c4009 |
#include <fcntl.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#ifdef IP_RECVERR
|
|
Packit |
6c4009 |
#include <errqueue.h>
|
|
Packit |
6c4009 |
#include <sys/uio.h>
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <kernel-features.h>
|
|
Packit |
6c4009 |
#include <inet/net-internal.h>
|
|
Packit |
6c4009 |
#include <shlib-compat.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
extern u_long _create_xid (void);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* UDP bases client side rpc operations
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
static enum clnt_stat clntudp_call (CLIENT *, u_long, xdrproc_t, caddr_t,
|
|
Packit |
6c4009 |
xdrproc_t, caddr_t, struct timeval);
|
|
Packit |
6c4009 |
static void clntudp_abort (void);
|
|
Packit |
6c4009 |
static void clntudp_geterr (CLIENT *, struct rpc_err *);
|
|
Packit |
6c4009 |
static bool_t clntudp_freeres (CLIENT *, xdrproc_t, caddr_t);
|
|
Packit |
6c4009 |
static bool_t clntudp_control (CLIENT *, int, char *);
|
|
Packit |
6c4009 |
static void clntudp_destroy (CLIENT *);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static const struct clnt_ops udp_ops =
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
clntudp_call,
|
|
Packit |
6c4009 |
clntudp_abort,
|
|
Packit |
6c4009 |
clntudp_geterr,
|
|
Packit |
6c4009 |
clntudp_freeres,
|
|
Packit |
6c4009 |
clntudp_destroy,
|
|
Packit |
6c4009 |
clntudp_control
|
|
Packit |
6c4009 |
};
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Private data kept per client handle. This private struct is
|
|
Packit |
6c4009 |
* unfortunately part of the ABI; ypbind contains a copy of it and
|
|
Packit |
6c4009 |
* accesses it through CLIENT::cl_private field.
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
struct cu_data
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
int cu_sock;
|
|
Packit |
6c4009 |
bool_t cu_closeit;
|
|
Packit |
6c4009 |
struct sockaddr_in cu_raddr;
|
|
Packit |
6c4009 |
int cu_rlen;
|
|
Packit |
6c4009 |
struct timeval cu_wait;
|
|
Packit |
6c4009 |
struct timeval cu_total;
|
|
Packit |
6c4009 |
struct rpc_err cu_error;
|
|
Packit |
6c4009 |
XDR cu_outxdrs;
|
|
Packit |
6c4009 |
u_int cu_xdrpos;
|
|
Packit |
6c4009 |
u_int cu_sendsz;
|
|
Packit |
6c4009 |
char *cu_outbuf;
|
|
Packit |
6c4009 |
u_int cu_recvsz;
|
|
Packit |
6c4009 |
char cu_inbuf[1];
|
|
Packit |
6c4009 |
};
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Create a UDP based client handle.
|
|
Packit |
6c4009 |
* If *sockp<0, *sockp is set to a newly created UPD socket.
|
|
Packit |
6c4009 |
* If raddr->sin_port is 0 a binder on the remote machine
|
|
Packit |
6c4009 |
* is consulted for the correct port number.
|
|
Packit |
6c4009 |
* NB: It is the clients responsibility to close *sockp.
|
|
Packit |
6c4009 |
* NB: The rpch->cl_auth is initialized to null authentication.
|
|
Packit |
6c4009 |
* Caller may wish to set this something more useful.
|
|
Packit |
6c4009 |
*
|
|
Packit |
6c4009 |
* wait is the amount of time used between retransmitting a call if
|
|
Packit |
6c4009 |
* no response has been heard; retransmission occurs until the actual
|
|
Packit |
6c4009 |
* rpc call times out.
|
|
Packit |
6c4009 |
*
|
|
Packit |
6c4009 |
* sendsz and recvsz are the maximum allowable packet sizes that can be
|
|
Packit |
6c4009 |
* sent and received.
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
CLIENT *
|
|
Packit |
6c4009 |
__libc_clntudp_bufcreate (struct sockaddr_in *raddr, u_long program,
|
|
Packit |
6c4009 |
u_long version, struct timeval wait, int *sockp,
|
|
Packit |
6c4009 |
u_int sendsz, u_int recvsz, int flags)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
CLIENT *cl;
|
|
Packit |
6c4009 |
struct cu_data *cu = NULL;
|
|
Packit |
6c4009 |
struct rpc_msg call_msg;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
cl = (CLIENT *) mem_alloc (sizeof (CLIENT));
|
|
Packit |
6c4009 |
sendsz = ((sendsz + 3) / 4) * 4;
|
|
Packit |
6c4009 |
recvsz = ((recvsz + 3) / 4) * 4;
|
|
Packit |
6c4009 |
cu = (struct cu_data *) mem_alloc (sizeof (*cu) + sendsz + recvsz);
|
|
Packit |
6c4009 |
if (cl == NULL || cu == NULL)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct rpc_createerr *ce = &get_rpc_createerr ();
|
|
Packit |
6c4009 |
(void) __fxprintf (NULL, "%s: %s",
|
|
Packit |
6c4009 |
"clntudp_create", _("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 |
cu->cu_outbuf = &cu->cu_inbuf[recvsz];
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
if (raddr->sin_port == 0)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
u_short port;
|
|
Packit |
6c4009 |
if ((port =
|
|
Packit |
6c4009 |
pmap_getport (raddr, program, version, IPPROTO_UDP)) == 0)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
goto fooy;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
raddr->sin_port = htons (port);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
cl->cl_ops = (struct clnt_ops *) &udp_ops;
|
|
Packit |
6c4009 |
cl->cl_private = (caddr_t) cu;
|
|
Packit |
6c4009 |
cu->cu_raddr = *raddr;
|
|
Packit |
6c4009 |
cu->cu_rlen = sizeof (cu->cu_raddr);
|
|
Packit |
6c4009 |
cu->cu_wait = wait;
|
|
Packit |
6c4009 |
cu->cu_total.tv_sec = -1;
|
|
Packit |
6c4009 |
cu->cu_total.tv_usec = -1;
|
|
Packit |
6c4009 |
cu->cu_sendsz = sendsz;
|
|
Packit |
6c4009 |
cu->cu_recvsz = recvsz;
|
|
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 = program;
|
|
Packit |
6c4009 |
call_msg.rm_call.cb_vers = version;
|
|
Packit |
6c4009 |
xdrmem_create (&(cu->cu_outxdrs), cu->cu_outbuf, sendsz, XDR_ENCODE);
|
|
Packit |
6c4009 |
if (!xdr_callhdr (&(cu->cu_outxdrs), &call_msg))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
goto fooy;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
cu->cu_xdrpos = XDR_GETPOS (&(cu->cu_outxdrs));
|
|
Packit |
6c4009 |
if (*sockp < 0)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
*sockp = __socket (AF_INET, SOCK_DGRAM|SOCK_NONBLOCK|flags, IPPROTO_UDP);
|
|
Packit |
6c4009 |
if (__glibc_unlikely (*sockp < 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 |
goto fooy;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
/* attempt to bind to prov port */
|
|
Packit |
6c4009 |
(void) bindresvport (*sockp, (struct sockaddr_in *) 0);
|
|
Packit |
6c4009 |
#ifdef IP_RECVERR
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
int on = 1;
|
|
Packit |
6c4009 |
__setsockopt (*sockp, SOL_IP, IP_RECVERR, &on, sizeof(on));
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
cu->cu_closeit = TRUE;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
cu->cu_closeit = FALSE;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
cu->cu_sock = *sockp;
|
|
Packit |
6c4009 |
cl->cl_auth = authnone_create ();
|
|
Packit |
6c4009 |
return cl;
|
|
Packit |
6c4009 |
fooy:
|
|
Packit |
6c4009 |
if (cu)
|
|
Packit |
6c4009 |
mem_free ((caddr_t) cu, sizeof (*cu) + sendsz + recvsz);
|
|
Packit |
6c4009 |
if (cl)
|
|
Packit |
6c4009 |
mem_free ((caddr_t) cl, sizeof (CLIENT));
|
|
Packit |
6c4009 |
return (CLIENT *) NULL;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
#ifdef EXPORT_RPC_SYMBOLS
|
|
Packit |
6c4009 |
libc_hidden_def (__libc_clntudp_bufcreate)
|
|
Packit |
6c4009 |
#else
|
|
Packit |
6c4009 |
libc_hidden_nolink_sunrpc (__libc_clntudp_bufcreate, GLIBC_PRIVATE)
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
CLIENT *
|
|
Packit |
6c4009 |
clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, u_long version,
|
|
Packit |
6c4009 |
struct timeval wait, int *sockp, u_int sendsz,
|
|
Packit |
6c4009 |
u_int recvsz)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
return __libc_clntudp_bufcreate (raddr, program, version, wait,
|
|
Packit |
6c4009 |
sockp, sendsz, recvsz, 0);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
libc_hidden_nolink_sunrpc (clntudp_bufcreate, GLIBC_2_0)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
CLIENT *
|
|
Packit |
6c4009 |
clntudp_create (struct sockaddr_in *raddr, u_long program, u_long version,
|
|
Packit |
6c4009 |
struct timeval wait, int *sockp)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
return __libc_clntudp_bufcreate (raddr, program, version, wait,
|
|
Packit |
6c4009 |
sockp, UDPMSGSIZE, UDPMSGSIZE, 0);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
#ifdef EXPORT_RPC_SYMBOLS
|
|
Packit |
6c4009 |
libc_hidden_def (clntudp_create)
|
|
Packit |
6c4009 |
#else
|
|
Packit |
6c4009 |
libc_hidden_nolink_sunrpc (clntudp_create, GLIBC_2_0)
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static int
|
|
Packit |
6c4009 |
is_network_up (int sock)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct ifaddrs *ifa;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
if (getifaddrs (&ifa) != 0)
|
|
Packit |
6c4009 |
return 0;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
struct ifaddrs *run = ifa;
|
|
Packit |
6c4009 |
while (run != NULL)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if ((run->ifa_flags & IFF_UP) != 0
|
|
Packit |
6c4009 |
&& run->ifa_addr != NULL
|
|
Packit |
6c4009 |
&& run->ifa_addr->sa_family == AF_INET)
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
run = run->ifa_next;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
freeifaddrs (ifa);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
return run != NULL;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static enum clnt_stat
|
|
Packit |
6c4009 |
clntudp_call (/* client handle */
|
|
Packit |
6c4009 |
CLIENT *cl,
|
|
Packit |
6c4009 |
/* procedure number */
|
|
Packit |
6c4009 |
u_long proc,
|
|
Packit |
6c4009 |
/* xdr routine for args */
|
|
Packit |
6c4009 |
xdrproc_t xargs,
|
|
Packit |
6c4009 |
/* pointer to args */
|
|
Packit |
6c4009 |
caddr_t argsp,
|
|
Packit |
6c4009 |
/* xdr routine for results */
|
|
Packit |
6c4009 |
xdrproc_t xresults,
|
|
Packit |
6c4009 |
/* pointer to results */
|
|
Packit |
6c4009 |
caddr_t resultsp,
|
|
Packit |
6c4009 |
/* seconds to wait before giving up */
|
|
Packit |
6c4009 |
struct timeval utimeout)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct cu_data *cu = (struct cu_data *) cl->cl_private;
|
|
Packit |
6c4009 |
XDR *xdrs;
|
|
Packit |
6c4009 |
int outlen = 0;
|
|
Packit |
6c4009 |
int inlen;
|
|
Packit |
6c4009 |
socklen_t fromlen;
|
|
Packit |
6c4009 |
struct pollfd fd;
|
|
Packit |
6c4009 |
struct sockaddr_in from;
|
|
Packit |
6c4009 |
struct rpc_msg reply_msg;
|
|
Packit |
6c4009 |
XDR reply_xdrs;
|
|
Packit |
6c4009 |
bool_t ok;
|
|
Packit |
6c4009 |
int nrefreshes = 2; /* number of times to refresh cred */
|
|
Packit |
6c4009 |
int anyup; /* any network interface up */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
struct deadline_current_time current_time = __deadline_current_time ();
|
|
Packit |
6c4009 |
struct deadline total_deadline; /* Determined once by overall timeout. */
|
|
Packit |
6c4009 |
struct deadline response_deadline; /* Determined anew for each query. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Choose the timeout value. For non-sending usage (xargs == NULL),
|
|
Packit |
6c4009 |
the total deadline does not matter, only cu->cu_wait is used
|
|
Packit |
6c4009 |
below. */
|
|
Packit |
6c4009 |
if (xargs != NULL)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct timeval tv;
|
|
Packit |
6c4009 |
if (cu->cu_total.tv_usec == -1)
|
|
Packit |
6c4009 |
/* Use supplied timeout. */
|
|
Packit |
6c4009 |
tv = utimeout;
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
/* Use default timeout. */
|
|
Packit |
6c4009 |
tv = cu->cu_total;
|
|
Packit |
6c4009 |
if (!__is_timeval_valid_timeout (tv))
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_TIMEDOUT);
|
|
Packit |
6c4009 |
total_deadline = __deadline_from_timeval (current_time, tv);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Guard against bad timeout specification. */
|
|
Packit |
6c4009 |
if (!__is_timeval_valid_timeout (cu->cu_wait))
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_TIMEDOUT);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
call_again:
|
|
Packit |
6c4009 |
xdrs = &(cu->cu_outxdrs);
|
|
Packit |
6c4009 |
if (xargs == NULL)
|
|
Packit |
6c4009 |
goto get_reply;
|
|
Packit |
6c4009 |
xdrs->x_op = XDR_ENCODE;
|
|
Packit |
6c4009 |
XDR_SETPOS (xdrs, cu->cu_xdrpos);
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* the transaction is the first thing in the out buffer
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
(*(uint32_t *) (cu->cu_outbuf))++;
|
|
Packit |
6c4009 |
if ((!XDR_PUTLONG (xdrs, (long *) &proc)) ||
|
|
Packit |
6c4009 |
(!AUTH_MARSHALL (cl->cl_auth, xdrs)) ||
|
|
Packit |
6c4009 |
(!(*xargs) (xdrs, argsp)))
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_CANTENCODEARGS);
|
|
Packit |
6c4009 |
outlen = (int) XDR_GETPOS (xdrs);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
send_again:
|
|
Packit |
6c4009 |
if (__sendto (cu->cu_sock, cu->cu_outbuf, outlen, 0,
|
|
Packit |
6c4009 |
(struct sockaddr *) &(cu->cu_raddr), cu->cu_rlen)
|
|
Packit |
6c4009 |
!= outlen)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
cu->cu_error.re_errno = errno;
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_CANTSEND);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* sendto may have blocked, so recompute the current time. */
|
|
Packit |
6c4009 |
current_time = __deadline_current_time ();
|
|
Packit |
6c4009 |
get_reply:
|
|
Packit |
6c4009 |
response_deadline = __deadline_from_timeval (current_time, cu->cu_wait);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
reply_msg.acpted_rply.ar_verf = _null_auth;
|
|
Packit |
6c4009 |
reply_msg.acpted_rply.ar_results.where = resultsp;
|
|
Packit |
6c4009 |
reply_msg.acpted_rply.ar_results.proc = xresults;
|
|
Packit |
6c4009 |
fd.fd = cu->cu_sock;
|
|
Packit |
6c4009 |
fd.events = POLLIN;
|
|
Packit |
6c4009 |
anyup = 0;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Per-response retry loop. current_time must be up-to-date at the
|
|
Packit |
6c4009 |
top of the loop. */
|
|
Packit |
6c4009 |
for (;;)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
int milliseconds;
|
|
Packit |
6c4009 |
if (xargs != NULL)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (__deadline_elapsed (current_time, total_deadline))
|
|
Packit |
6c4009 |
/* Overall timeout expired. */
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_TIMEDOUT);
|
|
Packit |
6c4009 |
milliseconds = __deadline_to_ms
|
|
Packit |
6c4009 |
(current_time, __deadline_first (total_deadline,
|
|
Packit |
6c4009 |
response_deadline));
|
|
Packit |
6c4009 |
if (milliseconds == 0)
|
|
Packit |
6c4009 |
/* Per-query timeout expired. */
|
|
Packit |
6c4009 |
goto send_again;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
/* xatgs == NULL. Collect a response without sending a
|
|
Packit |
6c4009 |
query. In this mode, we need to ignore the total
|
|
Packit |
6c4009 |
deadline. */
|
|
Packit |
6c4009 |
milliseconds = __deadline_to_ms (current_time, response_deadline);
|
|
Packit |
6c4009 |
if (milliseconds == 0)
|
|
Packit |
6c4009 |
/* Cannot send again, so bail out. */
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_CANTSEND);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
switch (__poll (&fd, 1, milliseconds))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
case 0:
|
|
Packit |
6c4009 |
if (anyup == 0)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
anyup = is_network_up (cu->cu_sock);
|
|
Packit |
6c4009 |
if (!anyup)
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_CANTRECV);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
goto next_response;
|
|
Packit |
6c4009 |
case -1:
|
|
Packit |
6c4009 |
if (errno == EINTR)
|
|
Packit |
6c4009 |
goto next_response;
|
|
Packit |
6c4009 |
cu->cu_error.re_errno = errno;
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_CANTRECV);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
#ifdef IP_RECVERR
|
|
Packit |
6c4009 |
if (fd.revents & POLLERR)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct msghdr msg;
|
|
Packit |
6c4009 |
struct cmsghdr *cmsg;
|
|
Packit |
6c4009 |
struct sock_extended_err *e;
|
|
Packit |
6c4009 |
struct sockaddr_in err_addr;
|
|
Packit |
6c4009 |
struct iovec iov;
|
|
Packit |
6c4009 |
char *cbuf = malloc (outlen + 256);
|
|
Packit |
6c4009 |
int ret;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
if (cbuf == NULL)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
cu->cu_error.re_errno = errno;
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_CANTRECV);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
iov.iov_base = cbuf + 256;
|
|
Packit |
6c4009 |
iov.iov_len = outlen;
|
|
Packit |
6c4009 |
msg.msg_name = (void *) &err_addr;
|
|
Packit |
6c4009 |
msg.msg_namelen = sizeof (err_addr);
|
|
Packit |
6c4009 |
msg.msg_iov = &iov;
|
|
Packit |
6c4009 |
msg.msg_iovlen = 1;
|
|
Packit |
6c4009 |
msg.msg_flags = 0;
|
|
Packit |
6c4009 |
msg.msg_control = cbuf;
|
|
Packit |
6c4009 |
msg.msg_controllen = 256;
|
|
Packit |
6c4009 |
ret = __recvmsg (cu->cu_sock, &msg, MSG_ERRQUEUE);
|
|
Packit |
6c4009 |
if (ret >= 0
|
|
Packit |
6c4009 |
&& memcmp (cbuf + 256, cu->cu_outbuf, ret) == 0
|
|
Packit |
6c4009 |
&& (msg.msg_flags & MSG_ERRQUEUE)
|
|
Packit |
6c4009 |
&& ((msg.msg_namelen == 0
|
|
Packit |
6c4009 |
&& ret >= 12)
|
|
Packit |
6c4009 |
|| (msg.msg_namelen == sizeof (err_addr)
|
|
Packit |
6c4009 |
&& err_addr.sin_family == AF_INET
|
|
Packit |
6c4009 |
&& memcmp (&err_addr.sin_addr, &cu->cu_raddr.sin_addr,
|
|
Packit |
6c4009 |
sizeof (err_addr.sin_addr)) == 0
|
|
Packit |
6c4009 |
&& err_addr.sin_port == cu->cu_raddr.sin_port)))
|
|
Packit |
6c4009 |
for (cmsg = CMSG_FIRSTHDR (&msg;; cmsg;
|
|
Packit |
6c4009 |
cmsg = CMSG_NXTHDR (&msg, cmsg))
|
|
Packit |
6c4009 |
if (cmsg->cmsg_level == SOL_IP && cmsg->cmsg_type == IP_RECVERR)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
e = (struct sock_extended_err *) CMSG_DATA(cmsg);
|
|
Packit |
6c4009 |
cu->cu_error.re_errno = e->ee_errno;
|
|
Packit |
6c4009 |
free (cbuf);
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_CANTRECV);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
free (cbuf);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
do
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
fromlen = sizeof (struct sockaddr);
|
|
Packit |
6c4009 |
inlen = __recvfrom (cu->cu_sock, cu->cu_inbuf,
|
|
Packit |
6c4009 |
(int) cu->cu_recvsz, MSG_DONTWAIT,
|
|
Packit |
6c4009 |
(struct sockaddr *) &from, &fromlen);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
while (inlen < 0 && errno == EINTR);
|
|
Packit |
6c4009 |
if (inlen < 0)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (errno == EWOULDBLOCK)
|
|
Packit |
6c4009 |
goto next_response;
|
|
Packit |
6c4009 |
cu->cu_error.re_errno = errno;
|
|
Packit |
6c4009 |
return (cu->cu_error.re_status = RPC_CANTRECV);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
/* Accept the response if the packet is sufficiently long and
|
|
Packit |
6c4009 |
the transaction ID matches the query (if available). */
|
|
Packit |
6c4009 |
if (inlen >= 4
|
|
Packit |
6c4009 |
&& (xargs == NULL
|
|
Packit |
6c4009 |
|| memcmp (cu->cu_inbuf, cu->cu_outbuf,
|
|
Packit |
6c4009 |
sizeof (uint32_t)) == 0))
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
next_response:
|
|
Packit |
6c4009 |
/* Update the current time because poll and recvmsg waited for
|
|
Packit |
6c4009 |
an unknown time. */
|
|
Packit |
6c4009 |
current_time = __deadline_current_time ();
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* now decode and validate the response
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
xdrmem_create (&reply_xdrs, cu->cu_inbuf, (u_int) inlen, XDR_DECODE);
|
|
Packit |
6c4009 |
ok = xdr_replymsg (&reply_xdrs, &reply_msg);
|
|
Packit |
6c4009 |
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
|
|
Packit |
6c4009 |
if (ok)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
_seterr_reply (&reply_msg, &(cu->cu_error));
|
|
Packit |
6c4009 |
if (cu->cu_error.re_status == RPC_SUCCESS)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (!AUTH_VALIDATE (cl->cl_auth,
|
|
Packit |
6c4009 |
&reply_msg.acpted_rply.ar_verf))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
cu->cu_error.re_status = RPC_AUTHERROR;
|
|
Packit |
6c4009 |
cu->cu_error.re_why = AUTH_INVALIDRESP;
|
|
Packit |
6c4009 |
}
|
|
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 (nrefreshes > 0 && AUTH_REFRESH (cl->cl_auth))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
nrefreshes--;
|
|
Packit |
6c4009 |
goto call_again;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
} /* end of unsuccessful completion */
|
|
Packit |
6c4009 |
} /* end of valid reply message */
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
cu->cu_error.re_status = RPC_CANTDECODERES;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
return cu->cu_error.re_status;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static void
|
|
Packit |
6c4009 |
clntudp_geterr (CLIENT *cl, struct rpc_err *errp)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct cu_data *cu = (struct cu_data *) cl->cl_private;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
*errp = cu->cu_error;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static bool_t
|
|
Packit |
6c4009 |
clntudp_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct cu_data *cu = (struct cu_data *) cl->cl_private;
|
|
Packit |
6c4009 |
XDR *xdrs = &(cu->cu_outxdrs);
|
|
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 |
clntudp_abort (void)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static bool_t
|
|
Packit |
6c4009 |
clntudp_control (CLIENT *cl, int request, char *info)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct cu_data *cu = (struct cu_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 |
cu->cu_closeit = TRUE;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLSET_FD_NCLOSE:
|
|
Packit |
6c4009 |
cu->cu_closeit = FALSE;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLSET_TIMEOUT:
|
|
Packit |
6c4009 |
cu->cu_total = *(struct timeval *) info;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_TIMEOUT:
|
|
Packit |
6c4009 |
*(struct timeval *) info = cu->cu_total;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLSET_RETRY_TIMEOUT:
|
|
Packit |
6c4009 |
cu->cu_wait = *(struct timeval *) info;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_RETRY_TIMEOUT:
|
|
Packit |
6c4009 |
*(struct timeval *) info = cu->cu_wait;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_SERVER_ADDR:
|
|
Packit |
6c4009 |
*(struct sockaddr_in *) info = cu->cu_raddr;
|
|
Packit |
6c4009 |
break;
|
|
Packit |
6c4009 |
case CLGET_FD:
|
|
Packit |
6c4009 |
*(int *)info = cu->cu_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, cu->cu_outbuf, 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 (cu->cu_outbuf, &ui32, sizeof (ui32));
|
|
Packit |
6c4009 |
/* decrement by 1 as clntudp_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, cu->cu_outbuf + 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 (cu->cu_outbuf + 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, cu->cu_outbuf + 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 (cu->cu_outbuf + 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_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 |
static void
|
|
Packit |
6c4009 |
clntudp_destroy (CLIENT *cl)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
struct cu_data *cu = (struct cu_data *) cl->cl_private;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
if (cu->cu_closeit)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
(void) __close (cu->cu_sock);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
XDR_DESTROY (&(cu->cu_outxdrs));
|
|
Packit |
6c4009 |
mem_free ((caddr_t) cu, (sizeof (*cu) + cu->cu_sendsz + cu->cu_recvsz));
|
|
Packit |
6c4009 |
mem_free ((caddr_t) cl, sizeof (CLIENT));
|
|
Packit |
6c4009 |
}
|