/* ARGSUSED */
static enum clnt_stat
clnt_door_call(CLIENT *cl, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp, struct timeval utimeout)
{
/* LINTED pointer alignment */
struct cu_data *cu = (struct cu_data *)cl->cl_private;
XDR xdrs;
door_arg_t params;
char *outbuf_ref;
struct rpc_msg reply_msg;
bool_t need_to_unmap;
int nrefreshes = 2; /* number of times to refresh cred */
rpc_callerr.re_errno = 0;
rpc_callerr.re_terrno = 0;
if ((params.rbuf = alloca(cu->cu_sendsz)) == NULL) {
rpc_callerr.re_terrno = 0;
rpc_callerr.re_errno = errno;
return (rpc_callerr.re_status = RPC_SYSTEMERROR);
}
outbuf_ref = params.rbuf;
params.rsize = cu->cu_sendsz;
if ((params.data_ptr = alloca(cu->cu_sendsz)) == NULL) {
rpc_callerr.re_terrno = 0;
rpc_callerr.re_errno = errno;
return (rpc_callerr.re_status = RPC_SYSTEMERROR);
}
call_again:
xdrmem_create(&xdrs, params.data_ptr, cu->cu_sendsz, XDR_ENCODE);
/* LINTED pointer alignment */
(*(uint32_t *)cu->cu_header)++; /* increment XID */
(void) memcpy(params.data_ptr, cu->cu_header, cu->cu_xdrpos);
XDR_SETPOS(&xdrs, cu->cu_xdrpos);
if ((!XDR_PUTINT32(&xdrs, (int32_t *)&proc)) ||
(!AUTH_MARSHALL(cl->cl_auth, &xdrs)) ||
(!(*xargs)(&xdrs, argsp))) {
return (rpc_callerr.re_status = RPC_CANTENCODEARGS);
}
params.data_size = (int)XDR_GETPOS(&xdrs);
params.desc_ptr = NULL;
params.desc_num = 0;
if (door_call(cu->cu_fd, ¶ms) < 0) {
rpc_callerr.re_errno = errno;
return (rpc_callerr.re_status = RPC_CANTSEND);
}
if (params.rbuf == NULL || params.rsize == 0) {
return (rpc_callerr.re_status = RPC_FAILED);
}
need_to_unmap = (params.rbuf != outbuf_ref);
/* LINTED pointer alignment */
if (*(uint32_t *)params.rbuf != *(uint32_t *)cu->cu_header) {
rpc_callerr.re_status = RPC_CANTDECODERES;
goto done;
}
xdrmem_create(&xdrs, params.rbuf, params.rsize, XDR_DECODE);
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = resultsp;
reply_msg.acpted_rply.ar_results.proc = xresults;
if (xdr_replymsg(&xdrs, &reply_msg)) {
if (reply_msg.rm_reply.rp_stat == MSG_ACCEPTED &&
reply_msg.acpted_rply.ar_stat == SUCCESS)
rpc_callerr.re_status = RPC_SUCCESS;
else
__seterr_reply(&reply_msg, &rpc_callerr);
if (rpc_callerr.re_status == RPC_SUCCESS) {
if (!AUTH_VALIDATE(cl->cl_auth,
&reply_msg.acpted_rply.ar_verf)) {
rpc_callerr.re_status = RPC_AUTHERROR;
rpc_callerr.re_why = AUTH_INVALIDRESP;
}
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));
}
}
/*
* If unsuccesful AND error is an authentication error
* then refresh credentials and try again, else break
*/
else if (rpc_callerr.re_status == RPC_AUTHERROR) {
/*
* maybe our credentials need to be refreshed ...
*/
if (nrefreshes-- &&
AUTH_REFRESH(cl->cl_auth, &reply_msg)) {
if (need_to_unmap)
(void) munmap(params.rbuf,
params.rsize);
goto call_again;
} else
/*
* We are setting rpc_callerr here given that
* libnsl is not reentrant thereby
* reinitializing the TSD. If not set here then
* success could be returned even though refresh
* failed.
*/
rpc_callerr.re_status = RPC_AUTHERROR;
}
} else
rpc_callerr.re_status = RPC_CANTDECODERES;
done:
if (need_to_unmap)
(void) munmap(params.rbuf, params.rsize);
return (rpc_callerr.re_status);
}
static enum clnt_stat
clnt_dg_call(CLIENT *cl, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp, struct timeval utimeout)
{
/* LINTED pointer alignment */
struct cu_data *cu = (struct cu_data *)cl->cl_private;
XDR *xdrs;
int outlen;
struct rpc_msg reply_msg;
XDR reply_xdrs;
struct timeval time_waited;
bool_t ok;
int nrefreshes = 2; /* number of times to refresh cred */
struct timeval timeout;
struct timeval retransmit_time;
struct timeval poll_time;
struct timeval startime, curtime;
struct t_unitdata tu_data;
int res; /* result of operations */
uint32_t x_id;
if (rpc_fd_lock(dgtbl, cu->cu_fd)) {
rpc_callerr.re_status = RPC_FAILED;
rpc_callerr.re_errno = errno;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (RPC_FAILED);
}
if (cu->cu_total.tv_usec == -1) {
timeout = utimeout; /* use supplied timeout */
} else {
timeout = cu->cu_total; /* use default timeout */
}
time_waited.tv_sec = 0;
time_waited.tv_usec = 0;
retransmit_time = cu->cu_wait;
tu_data.addr = cu->cu_raddr;
call_again:
xdrs = &(cu->cu_outxdrs);
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
/*
* Due to little endian byte order, it is necessary to convert to host
* format before incrementing xid.
*/
/* LINTED pointer cast */
x_id = ntohl(*(uint32_t *)(cu->cu_outbuf)) + 1; /* set XID */
/* LINTED pointer cast */
*(uint32_t *)cu->cu_outbuf = htonl(x_id);
if (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
if ((!XDR_PUTBYTES(xdrs, cu->cu_outbuf, cu->cu_xdrpos)) ||
(!XDR_PUTINT32(xdrs, (int32_t *)&proc)) ||
(!AUTH_MARSHALL(cl->cl_auth, xdrs)) ||
(!xargs(xdrs, argsp))) {
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTENCODEARGS);
}
} else {
/* LINTED pointer alignment */
uint32_t *u = (uint32_t *)&cu->cu_outbuf[cu->cu_xdrpos];
IXDR_PUT_U_INT32(u, proc);
if (!__rpc_gss_wrap(cl->cl_auth, cu->cu_outbuf,
((char *)u) - cu->cu_outbuf, xdrs, xargs, argsp)) {
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTENCODEARGS);
}
}
outlen = (int)XDR_GETPOS(xdrs);
send_again:
tu_data.udata.buf = cu->cu_outbuf_start;
tu_data.udata.len = outlen;
tu_data.opt.len = 0;
if (t_sndudata(cu->cu_fd, &tu_data) == -1) {
rpc_callerr.re_terrno = t_errno;
rpc_callerr.re_errno = errno;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTSEND);
}
/*
* Hack to provide rpc-based message passing
*/
if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_TIMEDOUT);
}
/*
* sub-optimal code appears here because we have
* some clock time to spare while the packets are in flight.
* (We assume that this is actually only executed once.)
*/
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;
/*
* Set polling time so that we don't wait for
* longer than specified by the total time to wait,
* or the retransmit time.
*/
poll_time.tv_sec = timeout.tv_sec - time_waited.tv_sec;
poll_time.tv_usec = timeout.tv_usec - time_waited.tv_usec;
while (poll_time.tv_usec < 0) {
poll_time.tv_usec += 1000000;
poll_time.tv_sec--;
}
if (poll_time.tv_sec < 0 || (poll_time.tv_sec == 0 &&
poll_time.tv_usec == 0)) {
/*
* this could happen if time_waited >= timeout
*/
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_TIMEDOUT);
}
if (poll_time.tv_sec > retransmit_time.tv_sec ||
(poll_time.tv_sec == retransmit_time.tv_sec &&
poll_time.tv_usec > retransmit_time.tv_usec))
poll_time = retransmit_time;
for (;;) {
(void) gettimeofday(&startime, NULL);
switch (poll(&cu->pfdp, 1,
__rpc_timeval_to_msec(&poll_time))) {
case -1:
if (errno != EINTR && errno != EAGAIN) {
rpc_callerr.re_errno = errno;
rpc_callerr.re_terrno = 0;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTRECV);
}
/*FALLTHROUGH*/
case 0:
/*
* update time waited
*/
timeout: (void) gettimeofday(&curtime, NULL);
time_waited.tv_sec += curtime.tv_sec - startime.tv_sec;
time_waited.tv_usec += curtime.tv_usec -
startime.tv_usec;
while (time_waited.tv_usec >= 1000000) {
time_waited.tv_usec -= 1000000;
time_waited.tv_sec++;
}
while (time_waited.tv_usec < 0) {
time_waited.tv_usec += 1000000;
time_waited.tv_sec--;
}
/*
* decrement time left to poll by same amount
*/
poll_time.tv_sec -= curtime.tv_sec - startime.tv_sec;
poll_time.tv_usec -= curtime.tv_usec - startime.tv_usec;
while (poll_time.tv_usec >= 1000000) {
poll_time.tv_usec -= 1000000;
poll_time.tv_sec++;
}
while (poll_time.tv_usec < 0) {
poll_time.tv_usec += 1000000;
poll_time.tv_sec--;
}
/*
* if there's time left to poll, poll again
*/
if (poll_time.tv_sec > 0 ||
(poll_time.tv_sec == 0 && poll_time.tv_usec > 0))
continue;
/*
* if there's more time left, retransmit;
* otherwise, return timeout error
*/
if (time_waited.tv_sec < timeout.tv_sec ||
(time_waited.tv_sec == timeout.tv_sec &&
time_waited.tv_usec < timeout.tv_usec)) {
/*
* update retransmit_time
*/
retransmit_time.tv_usec *= 2;
retransmit_time.tv_sec *= 2;
while (retransmit_time.tv_usec >= 1000000) {
retransmit_time.tv_usec -= 1000000;
retransmit_time.tv_sec++;
}
if (retransmit_time.tv_sec >= RPC_MAX_BACKOFF) {
retransmit_time.tv_sec =
RPC_MAX_BACKOFF;
retransmit_time.tv_usec = 0;
}
/*
* redo AUTH_MARSHAL if AUTH_DES or RPCSEC_GSS.
*/
if (cl->cl_auth->ah_cred.oa_flavor ==
AUTH_DES ||
cl->cl_auth->ah_cred.oa_flavor ==
RPCSEC_GSS)
goto call_again;
else
goto send_again;
}
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_TIMEDOUT);
default:
break;
}
if (cu->pfdp.revents & POLLNVAL || (cu->pfdp.revents == 0)) {
rpc_callerr.re_status = RPC_CANTRECV;
/*
* Note: we're faking errno here because we
* previously would have expected select() to
* return -1 with errno EBADF. Poll(BA_OS)
* returns 0 and sets the POLLNVAL revents flag
* instead.
*/
rpc_callerr.re_errno = errno = EBADF;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (-1);
}
/* We have some data now */
do {
int moreflag; /* flag indicating more data */
moreflag = 0;
res = t_rcvudata(cu->cu_fd, cu->cu_tr_data, &moreflag);
if (moreflag & T_MORE) {
/*
* Drop this packet. I aint got any
* more space.
*/
res = -1;
/* I should not really be doing this */
errno = 0;
/*
* XXX: Not really Buffer overflow in the
* sense of TLI.
*/
t_errno = TBUFOVFLW;
}
} while (res < 0 && (t_errno == TSYSERR && errno == EINTR));
if (res < 0) {
int err, errnoflag = FALSE;
#ifdef sun
if (t_errno == TSYSERR && errno == EWOULDBLOCK)
#else
if (t_errno == TSYSERR && errno == EAGAIN)
#endif
continue;
if (t_errno == TLOOK) {
if ((err = _rcv_unitdata_err(cu)) == 0)
continue;
else if (err == 1)
errnoflag = TRUE;
} else {
rpc_callerr.re_terrno = t_errno;
}
if (errnoflag == FALSE)
rpc_callerr.re_errno = errno;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTRECV);
}
if (cu->cu_tr_data->udata.len < (uint_t)sizeof (uint32_t))
continue;
/* see if reply transaction id matches sent id */
/* LINTED pointer alignment */
if (*((uint32_t *)(cu->cu_inbuf)) !=
/* LINTED pointer alignment */
*((uint32_t *)(cu->cu_outbuf)))
goto timeout;
/* we now assume we have the proper reply */
break;
}
/*
* now decode and validate the response
*/
xdrmem_create(&reply_xdrs, cu->cu_inbuf,
(uint_t)cu->cu_tr_data->udata.len, XDR_DECODE);
ok = xdr_replymsg(&reply_xdrs, &reply_msg);
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
if (ok) {
if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(reply_msg.acpted_rply.ar_stat == SUCCESS))
rpc_callerr.re_status = RPC_SUCCESS;
else
__seterr_reply(&reply_msg, &(rpc_callerr));
if (rpc_callerr.re_status == RPC_SUCCESS) {
if (!AUTH_VALIDATE(cl->cl_auth,
&reply_msg.acpted_rply.ar_verf)) {
rpc_callerr.re_status = RPC_AUTHERROR;
rpc_callerr.re_why = AUTH_INVALIDRESP;
} else if (cl->cl_auth->ah_cred.oa_flavor !=
RPCSEC_GSS) {
if (!(*xresults)(&reply_xdrs, resultsp)) {
if (rpc_callerr.re_status ==
RPC_SUCCESS)
rpc_callerr.re_status =
RPC_CANTDECODERES;
}
} else if (!__rpc_gss_unwrap(cl->cl_auth, &reply_xdrs,
xresults, resultsp)) {
if (rpc_callerr.re_status == RPC_SUCCESS)
rpc_callerr.re_status =
RPC_CANTDECODERES;
}
} /* end successful completion */
/*
* If unsuccesful AND error is an authentication error
* then refresh credentials and try again, else break
*/
else if (rpc_callerr.re_status == RPC_AUTHERROR)
/* maybe our credentials need to be refreshed ... */
if (nrefreshes-- &&
AUTH_REFRESH(cl->cl_auth, &reply_msg))
goto call_again;
else
/*
* We are setting rpc_callerr here given that
* libnsl is not reentrant thereby
* reinitializing the TSD. If not set here then
* success could be returned even though refresh
* failed.
*/
rpc_callerr.re_status = RPC_AUTHERROR;
/* end of unsuccessful completion */
/* free verifier */
if (reply_msg.rm_reply.rp_stat == MSG_ACCEPTED &&
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 of valid reply message */
else {
rpc_callerr.re_status = RPC_CANTDECODERES;
}
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status);
}
/*ARGSUSED*/
static enum clnt_stat
clnt_raw_call(CLIENT *h, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp, struct timeval timeout)
{
struct clnt_raw_private *clp;
XDR xdrs;
struct rpc_msg msg;
uint_t start;
rpc_callerr.re_errno = 0;
rpc_callerr.re_terrno = 0;
(void) mutex_lock(&clntraw_lock);
clp = clnt_raw_private;
if (clp == NULL) {
(void) mutex_unlock(&clntraw_lock);
return (rpc_callerr.re_status = RPC_FAILED);
}
(void) mutex_unlock(&clntraw_lock);
call_again:
/*
* send request
*/
xdrmem_create(&xdrs, clp->raw_netbuf->buf, clp->raw_netbuf->maxlen,
XDR_ENCODE);
start = XDR_GETPOS(&xdrs);
/* LINTED pointer alignment */
((struct rpc_msg *)clp->mashl_callmsg)->rm_xid++;
if ((!XDR_PUTBYTES(&xdrs, clp->mashl_callmsg, clp->mcnt)) ||
(!XDR_PUTINT32(&xdrs, (int32_t *)&proc)) ||
(!AUTH_MARSHALL(h->cl_auth, &xdrs)) ||
(!(*xargs)(&xdrs, argsp))) {
XDR_DESTROY(&xdrs);
return (rpc_callerr.re_status = RPC_CANTENCODEARGS);
}
clp->raw_netbuf->len = XDR_GETPOS(&xdrs) - start;
XDR_DESTROY(&xdrs);
/*
* We have to call server input routine here because this is
* all going on in one process.
* By convention using FD_SETSIZE as the pseudo file descriptor.
*/
svc_getreq_common(FD_SETSIZE);
/*
* get results
*/
xdrmem_create(&xdrs, clp->raw_netbuf->buf, clp->raw_netbuf->len,
XDR_DECODE);
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where = resultsp;
msg.acpted_rply.ar_results.proc = xresults;
if (!xdr_replymsg(&xdrs, &msg)) {
XDR_DESTROY(&xdrs);
return (rpc_callerr.re_status = RPC_CANTDECODERES);
}
XDR_DESTROY(&xdrs);
if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(msg.acpted_rply.ar_stat == SUCCESS))
rpc_callerr.re_status = RPC_SUCCESS;
else
__seterr_reply(&msg, &rpc_callerr);
if (rpc_callerr.re_status == RPC_SUCCESS) {
if (!AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
rpc_callerr.re_status = RPC_AUTHERROR;
rpc_callerr.re_why = AUTH_INVALIDRESP;
}
if (msg.acpted_rply.ar_verf.oa_base != NULL) {
xdr_free(xdr_opaque_auth,
(char *)&(msg.acpted_rply.ar_verf));
}
/* end successful completion */
} else {
if (AUTH_REFRESH(h->cl_auth, &msg))
goto call_again;
/* end of unsuccessful completion */
}
return (rpc_callerr.re_status);
}
