static bool_t Svctcp_reply(SVCXPRT * xprt, register struct rpc_msg *msg)
{
register struct tcp_conn *cd = (struct tcp_conn *)(xprt->xp_p1);
register XDR *xdrs = &(cd->xdrs);
xdrproc_t xdr_proc;
caddr_t xdr_where;
xdrs->x_op = XDR_ENCODE;
msg->rm_xid = cd->x_id;
if(msg->rm_reply.rp_stat == MSG_ACCEPTED && msg->rm_reply.rp_acpt.ar_stat == SUCCESS)
{
xdr_proc = msg->acpted_rply.ar_results.proc;
xdr_where = msg->acpted_rply.ar_results.where;
msg->acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
msg->acpted_rply.ar_results.where = NULL;
if(!xdr_replymsg(xdrs, msg) || !SVCAUTH_WRAP(NULL, xdrs, xdr_proc, xdr_where))
return (FALSE);
}
else if(!xdr_replymsg(xdrs, msg))
{
return (FALSE);
}
(void)xdrrec_endofrecord(xdrs, TRUE);
return (TRUE);
}
static bool_t
svc_vc_backchannel_reply(SVCXPRT *xprt, struct rpc_msg *msg,
struct sockaddr *addr, struct mbuf *m, uint32_t *seq)
{
struct ct_data *ct;
XDR xdrs;
struct mbuf *mrep;
bool_t stat = TRUE;
int error;
/*
* Leave space for record mark.
*/
mrep = m_gethdr(M_WAITOK, MT_DATA);
mrep->m_data += sizeof(uint32_t);
xdrmbuf_create(&xdrs, mrep, XDR_ENCODE);
if (msg->rm_reply.rp_stat == MSG_ACCEPTED &&
msg->rm_reply.rp_acpt.ar_stat == SUCCESS) {
if (!xdr_replymsg(&xdrs, msg))
stat = FALSE;
else
xdrmbuf_append(&xdrs, m);
} else {
stat = xdr_replymsg(&xdrs, msg);
}
if (stat) {
m_fixhdr(mrep);
/*
* Prepend a record marker containing the reply length.
*/
M_PREPEND(mrep, sizeof(uint32_t), M_WAITOK);
*mtod(mrep, uint32_t *) =
htonl(0x80000000 | (mrep->m_pkthdr.len
- sizeof(uint32_t)));
sx_xlock(&xprt->xp_lock);
ct = (struct ct_data *)xprt->xp_p2;
if (ct != NULL)
error = sosend(ct->ct_socket, NULL, NULL, mrep, NULL,
0, curthread);
else
error = EPIPE;
sx_xunlock(&xprt->xp_lock);
if (!error) {
stat = TRUE;
}
} else {
m_freem(mrep);
}
XDR_DESTROY(&xdrs);
return (stat);
}
static bool_t
svc_vc_reply(SVCXPRT *xprt, struct rpc_msg *msg,
struct sockaddr *addr, struct mbuf *m, uint32_t *seq)
{
XDR xdrs;
struct mbuf *mrep;
bool_t stat = TRUE;
int error, len;
/*
* Leave space for record mark.
*/
mrep = m_gethdr(M_WAITOK, MT_DATA);
mrep->m_data += sizeof(uint32_t);
xdrmbuf_create(&xdrs, mrep, XDR_ENCODE);
if (msg->rm_reply.rp_stat == MSG_ACCEPTED &&
msg->rm_reply.rp_acpt.ar_stat == SUCCESS) {
if (!xdr_replymsg(&xdrs, msg))
stat = FALSE;
else
xdrmbuf_append(&xdrs, m);
} else {
stat = xdr_replymsg(&xdrs, msg);
}
if (stat) {
m_fixhdr(mrep);
/*
* Prepend a record marker containing the reply length.
*/
M_PREPEND(mrep, sizeof(uint32_t), M_WAITOK);
len = mrep->m_pkthdr.len;
*mtod(mrep, uint32_t *) =
htonl(0x80000000 | (len - sizeof(uint32_t)));
atomic_add_32(&xprt->xp_snd_cnt, len);
error = sosend(xprt->xp_socket, NULL, NULL, mrep, NULL,
0, curthread);
if (!error) {
atomic_add_rel_32(&xprt->xp_snt_cnt, len);
if (seq)
*seq = xprt->xp_snd_cnt;
stat = TRUE;
} else
atomic_subtract_32(&xprt->xp_snd_cnt, len);
} else {
m_freem(mrep);
}
XDR_DESTROY(&xdrs);
return (stat);
}
static bool_t
svc_dg_reply(SVCXPRT *xprt, struct rpc_msg *msg)
{
struct svc_dg_data *su;
XDR *xdrs;
bool_t stat = FALSE;
size_t slen;
_DIAGASSERT(xprt != NULL);
_DIAGASSERT(msg != NULL);
su = su_data(xprt);
xdrs = &(su->su_xdrs);
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
msg->rm_xid = su->su_xid;
if (xdr_replymsg(xdrs, msg)) {
slen = XDR_GETPOS(xdrs);
if (sendto(xprt->xp_fd, rpc_buffer(xprt), slen, 0,
(struct sockaddr *)xprt->xp_rtaddr.buf,
(socklen_t)xprt->xp_rtaddr.len) == (ssize_t) slen) {
stat = TRUE;
if (su->su_cache)
cache_set(xprt, slen);
}
}
return (stat);
}
void
svccb::reply (const void *reply, sfs::xdrproc_t xdr, bool nocache)
{
rpc_msg rm;
rm.rm_xid = xid ();
rm.rm_direction = REPLY;
rm.rm_reply.rp_stat = MSG_ACCEPTED;
rm.acpted_rply.ar_verf = _null_auth;
rm.acpted_rply.ar_stat = SUCCESS;
rm.acpted_rply.ar_results.where = (char *) reply;
rm.acpted_rply.ar_results.proc
= reinterpret_cast<sun_xdrproc_t> (xdr ? xdr : srv->tbl[proc ()].xdr_res);
get_rpc_stats ().end_call (this, ts_start);
xdrsuio x (XDR_ENCODE);
if (!xdr_replymsg (x.xdrp (), &rm)) {
warn ("svccb::reply: xdr_replymsg failed\n");
delete this;
return;
}
trace (4, "reply %s:%s x=%x\n",
srv->rpcprog->name, srv->tbl[msg.rm_call.cb_proc].name,
xidswap (msg.rm_xid));
if (asrvtrace >= 5 && !xdr && srv->tbl[msg.rm_call.cb_proc].print_res)
srv->tbl[msg.rm_call.cb_proc].print_res (reply, NULL, asrvtrace - 4,
"REPLY", "");
srv->sendreply (this, &x, nocache);
}
static bool_t
svcudp_reply(
register SVCXPRT *xprt,
struct rpc_msg *msg)
{
register struct svcudp_data *su = su_data(xprt);
register XDR *xdrs = &(su->su_xdrs);
register int slen;
register bool_t stat = FALSE;
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
msg->rm_xid = su->su_xid;
if (xdr_replymsg(xdrs, msg)) {
slen = (int)XDR_GETPOS(xdrs);
if (sendto(xprt->xp_sock, rpc_buffer(xprt), slen, 0,
(struct sockaddr *)&(xprt->xp_raddr), xprt->xp_addrlen)
== (ssize_t)slen) {
stat = TRUE;
if (su->su_cache) {
cache_set(xprt, (unsigned long) slen);
}
}
}
return (stat);
}
/* Decodes the XDR format in msgbuf into rpc_msg.
* The remaining payload is returned into payload.
*/
int
xdr_to_rpc_reply(char *msgbuf, size_t len, struct rpc_msg *reply,
struct iovec *payload, char *verfbytes)
{
XDR xdr;
int ret = -EINVAL;
GF_VALIDATE_OR_GOTO("rpc", msgbuf, out);
GF_VALIDATE_OR_GOTO("rpc", reply, out);
memset(reply, 0, sizeof(struct rpc_msg));
reply->acpted_rply.ar_verf = _null_auth;
reply->acpted_rply.ar_results.where = NULL;
reply->acpted_rply.ar_results.proc = (xdrproc_t)(xdr_void);
xdrmem_create(&xdr, msgbuf, len, XDR_DECODE);
if (!xdr_replymsg(&xdr, reply)) {
gf_log("rpc", GF_LOG_WARNING, "failed to decode reply msg");
goto out;
}
if (payload) {
payload->iov_base = xdr_decoded_remaining_addr(xdr);
payload->iov_len = xdr_decoded_remaining_len(xdr);
}
ret = 0;
out:
return ret;
}
static bool_t Svcudp_reply(register SVCXPRT * xprt, struct rpc_msg *msg)
{
register struct Svcudp_data *su = Su_data(xprt);
register XDR *xdrs = &(su->su_xdrs);
register int slen;
xdrproc_t xdr_proc;
caddr_t xdr_where;
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
msg->rm_xid = su->su_xid;
if(msg->rm_reply.rp_stat == MSG_ACCEPTED && msg->rm_reply.rp_acpt.ar_stat == SUCCESS)
{
xdr_proc = msg->acpted_rply.ar_results.proc;
xdr_where = msg->acpted_rply.ar_results.where;
msg->acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
msg->acpted_rply.ar_results.where = NULL;
if(!xdr_replymsg(xdrs, msg) ||
!SVCAUTH_WRAP(xprt->xp_auth, xdrs, xdr_proc, xdr_where))
return (FALSE);
}
else if(!xdr_replymsg(xdrs, msg))
{
return (FALSE);
}
slen = (int)XDR_GETPOS(xdrs);
#ifdef _FREEBSD
if(sendto(xprt->xp_fd,
#else
if(sendto(xprt->xp_sock,
#endif
rpc_buffer(xprt),
slen, 0, (struct sockaddr *)&(xprt->xp_raddr), xprt->xp_addrlen) != slen)
{
return (FALSE);
}
return (TRUE);
}
static bool_t
svc_dg_reply(SVCXPRT *xprt, struct rpc_msg *msg,
struct sockaddr *addr, struct mbuf *m)
{
XDR xdrs;
struct mbuf *mrep;
bool_t stat = TRUE;
int error;
MGETHDR(mrep, M_WAIT, MT_DATA);
mrep->m_len = 0;
xdrmbuf_create(&xdrs, mrep, XDR_ENCODE);
if (msg->rm_reply.rp_stat == MSG_ACCEPTED &&
msg->rm_reply.rp_acpt.ar_stat == SUCCESS) {
if (!xdr_replymsg(&xdrs, msg))
stat = FALSE;
else
xdrmbuf_append(&xdrs, m);
} else {
stat = xdr_replymsg(&xdrs, msg);
}
if (stat) {
m_fixhdr(mrep);
error = sosend(xprt->xp_socket, addr, NULL, mrep, NULL,
0, curthread);
if (!error) {
stat = TRUE;
}
} else {
m_freem(mrep);
}
XDR_DESTROY(&xdrs);
xprt->xp_p2 = NULL;
return (stat);
}
static void
asrv_accepterr (ref<xhinfo> xi, const sockaddr *addr,
accept_stat stat, const rpc_msg *mp)
{
rpc_msg m;
bzero (&m, sizeof (m));
m.rm_xid = mp->rm_xid;
m.rm_direction = REPLY;
m.rm_reply.rp_stat = MSG_ACCEPTED;
switch (stat) {
case PROG_UNAVAIL:
case PROG_MISMATCH:
{
m.acpted_rply.ar_stat = PROG_UNAVAIL;
m.acpted_rply.ar_vers.low = 0xffffffff;
m.acpted_rply.ar_vers.high = 0;
u_int32_t prog = mp->rm_call.cb_prog;
u_int32_t vers = mp->rm_call.cb_vers;
for (asrv *a = xi->stab.first (); a; a = xi->stab.next (a))
if (a->hascb () && a->pv.prog == prog) {
if (a->pv.vers == vers)
panic ("asrv_accepterr: prog/vers exists\n");
// m.acpted_rply.ar_stat = PROC_UNAVAIL;
else if (m.acpted_rply.ar_stat != PROC_UNAVAIL) {
m.acpted_rply.ar_stat = PROG_MISMATCH;
if (m.acpted_rply.ar_vers.low > a->pv.vers)
m.acpted_rply.ar_vers.low = a->pv.vers;
if (m.acpted_rply.ar_vers.high < a->pv.vers)
m.acpted_rply.ar_vers.high = a->pv.vers;
}
}
break;
}
case PROC_UNAVAIL:
case GARBAGE_ARGS:
case SYSTEM_ERR:
m.acpted_rply.ar_stat = stat;
break;
default:
panic ("asrv_accepterr: bad stat %d\n", stat);
break;
}
xdrsuio x (XDR_ENCODE);
if (xdr_replymsg (x.xdrp (), &m))
xi->xh->sendv (x.iov (), x.iovcnt (), addr);
else
warn ("asrv_accepterr: xdr_replymsg failed\n");
}
static bool_t Svcudp_reply(register SVCXPRT * xprt, struct rpc_msg *msg)
{
register struct Svcudp_data *su = Su_data(xprt);
register XDR *xdrs = &(su->su_xdrs);
register int slen;
xdrproc_t xdr_proc;
caddr_t xdr_where;
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
msg->rm_xid = su->su_xid;
if(msg->rm_reply.rp_stat == MSG_ACCEPTED && msg->rm_reply.rp_acpt.ar_stat == SUCCESS)
{
xdr_proc = msg->acpted_rply.ar_results.proc;
xdr_where = msg->acpted_rply.ar_results.where;
msg->acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
msg->acpted_rply.ar_results.where = NULL;
if(!xdr_replymsg(xdrs, msg) ||
!SVCAUTH_WRAP(xprt->xp_auth, xdrs, xdr_proc, xdr_where))
return (FALSE);
}
else if(!xdr_replymsg(xdrs, msg))
{
return (FALSE);
}
slen = (int)XDR_GETPOS(xdrs);
if(sendto(xprt->XP_SOCK,
rpc_buffer(xprt),
slen, 0, (struct sockaddr *)&(xprt->xp_raddr), xprt->xp_addrlen) != slen)
{
LogInfo(COMPONENT_DISPATCH, "EAGAIN indicates UDP buffer is full and not"
" allowed to block. sendto() returned %s", strerror(errno));
return (FALSE);
}
return (TRUE);
}
static bool_t
svctcp_reply (SVCXPRT *xprt, struct rpc_msg *msg)
{
struct tcp_conn *cd = (struct tcp_conn *) (xprt->xp_p1);
XDR *xdrs = &(cd->xdrs);
bool_t stat;
xdrs->x_op = XDR_ENCODE;
msg->rm_xid = cd->x_id;
stat = xdr_replymsg (xdrs, msg);
(void) xdrrec_endofrecord (xdrs, TRUE);
return stat;
}
static bool_t
svcraw_reply(SVCXPRT *xprt, struct rpc_msg *msg)
{
register struct svcraw_private *srp = svcraw_private;
register XDR *xdrs;
if (srp == 0)
return (FALSE);
xdrs = &srp->xdr_stream;
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
if (! xdr_replymsg(xdrs, msg))
return (FALSE);
(void)XDR_GETPOS(xdrs); /* called just for overhead */
return (TRUE);
}
/*ARGSUSED*/
static bool_t
svc_raw_reply(SVCXPRT *xprt, struct rpc_msg *msg)
{
struct svc_raw_private *srp;
XDR *xdrs;
(void) mutex_lock(&svcraw_lock);
srp = svc_raw_private;
if (srp == NULL) {
(void) mutex_unlock(&svcraw_lock);
return (FALSE);
}
(void) mutex_unlock(&svcraw_lock);
xdrs = &srp->xdr_stream;
xdrs->x_op = XDR_ENCODE;
(void) XDR_SETPOS(xdrs, 0);
return (xdr_replymsg(xdrs, msg));
}
static void
asrv_rpc_mismatch (ref<xhinfo> xi, const sockaddr *addr, u_int32_t xid)
{
rpc_msg m;
bzero (&m, sizeof (m));
m.rm_xid = xid;
m.rm_direction = REPLY;
m.rm_reply.rp_stat = MSG_DENIED;
m.rjcted_rply.rj_stat = RPC_MISMATCH;
m.rjcted_rply.rj_vers.low = RPC_MSG_VERSION;
m.rjcted_rply.rj_vers.high = RPC_MSG_VERSION;
xdrsuio x (XDR_ENCODE);
if (xdr_replymsg (x.xdrp (), &m))
xi->xh->sendv (x.iov (), x.iovcnt (), addr);
else
warn ("asrv_rpc_mismatch: xdr_replymsg failed\n");
}
static bool_t svcudp_reply(
register SVCXPRT *xprt,
struct rpc_msg *msg)
{
register struct svcudp_data *su = su_data(xprt);
register XDR *xdrs = &(su->su_xdrs);
register int slen;
register bool_t stat = FALSE;
xdrproc_t xdr_results;
caddr_t xdr_location;
bool_t has_args;
if (msg->rm_reply.rp_stat == MSG_ACCEPTED &&
msg->rm_reply.rp_acpt.ar_stat == SUCCESS) {
has_args = TRUE;
xdr_results = msg->acpted_rply.ar_results.proc;
xdr_location = msg->acpted_rply.ar_results.where;
msg->acpted_rply.ar_results.proc = xdr_void;
msg->acpted_rply.ar_results.where = NULL;
} else
has_args = FALSE;
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
msg->rm_xid = su->su_xid;
if (xdr_replymsg(xdrs, msg) &&
(!has_args ||
(SVCAUTH_WRAP(xprt->xp_auth, xdrs, xdr_results, xdr_location)))) {
slen = (int)XDR_GETPOS(xdrs);
if (sendto(xprt->xp_sock, rpc_buffer(xprt), slen, 0,
(struct sockaddr *)&(xprt->xp_raddr), xprt->xp_addrlen)
== slen) {
stat = TRUE;
if (su->su_cache && slen >= 0) {
cache_set(xprt, (uint32_t) slen);
}
}
}
return (stat);
}
static void
asrv_auth_reject (ref<xhinfo> xi, const sockaddr *addr,
u_int32_t xid, auth_stat stat)
{
rpc_msg m;
bzero (&m, sizeof (m));
assert (stat != AUTH_OK);
m.rm_xid = xid;
m.rm_direction = REPLY;
m.rm_reply.rp_stat = MSG_DENIED;
m.rjcted_rply.rj_stat = AUTH_ERROR;
m.rjcted_rply.rj_why = stat;
xdrsuio x (XDR_ENCODE);
if (xdr_replymsg (x.xdrp (), &m))
xi->xh->sendv (x.iov (), x.iovcnt (), addr);
else
warn ("asrv_auth_reject: xdr_replymsg failed\n");
}
/*
* Field reply to call to mountd
*/
int
pickup_rpc_reply(voidp pkt, int len, voidp where, XDRPROC_T_TYPE where_xdr)
{
XDR reply_xdr;
int ok;
struct rpc_err err;
struct rpc_msg reply_msg;
int error = 0;
/* memset((voidp) &err, 0, sizeof(err)); */
memset((voidp) &reply_msg, 0, sizeof(reply_msg));
memset((voidp) &reply_xdr, 0, sizeof(reply_xdr));
reply_msg.acpted_rply.ar_results.where = where;
reply_msg.acpted_rply.ar_results.proc = where_xdr;
xdrmem_create(&reply_xdr, pkt, len, XDR_DECODE);
ok = xdr_replymsg(&reply_xdr, &reply_msg);
if (!ok) {
error = EIO;
goto drop;
}
_seterr_reply(&reply_msg, &err);
if (err.re_status != RPC_SUCCESS) {
error = EIO;
goto drop;
}
drop:
if (reply_msg.rm_reply.rp_stat == MSG_ACCEPTED &&
reply_msg.acpted_rply.ar_verf.oa_base) {
reply_xdr.x_op = XDR_FREE;
(void) xdr_opaque_auth(&reply_xdr,
&reply_msg.acpted_rply.ar_verf);
}
xdr_destroy(&reply_xdr);
return error;
}
/*ARGSUSED*/
static bool
svc_raw_reply(SVCXPRT *xprt, struct svc_req *req, struct rpc_msg *msg)
{
struct svc_raw_private *srp;
XDR *xdrs;
mutex_lock(&svcraw_lock);
srp = svc_raw_private;
if (srp == NULL) {
mutex_unlock(&svcraw_lock);
return (false);
}
mutex_unlock(&svcraw_lock);
xdrs = &srp->xdr_stream;
xdrs->x_op = XDR_ENCODE;
(void)XDR_SETPOS(xdrs, 0);
if (!xdr_replymsg(xdrs, msg))
return (false);
(void)XDR_GETPOS(xdrs); /* called just for overhead */
return (true);
}
int
rpc_reply_to_xdr (struct rpc_msg *reply, char *dest, size_t len,
struct iovec *dst)
{
XDR xdr;
int ret = -1;
GF_VALIDATE_OR_GOTO ("rpc", reply, out);
GF_VALIDATE_OR_GOTO ("rpc", dest, out);
GF_VALIDATE_OR_GOTO ("rpc", dst, out);
xdrmem_create (&xdr, dest, len, XDR_ENCODE);
if (!xdr_replymsg(&xdr, reply)) {
gf_log ("rpc", GF_LOG_WARNING, "failed to encode reply msg");
goto out;
}
dst->iov_base = dest;
dst->iov_len = xdr_encoded_length (xdr);
ret = 0;
out:
return ret;
}
static enum clnt_stat
clnt_vc_call(CLIENT *cl, rpcproc_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 *) cl->cl_private;
XDR *xdrs = &(ct->ct_xdrs);
struct rpc_msg reply_msg;
u_int32_t x_id;
u_int32_t *msg_x_id = &ct->ct_u.ct_mcalli; /* yuk */
bool_t shipnow;
int refreshes = 2;
sigset_t mask, newmask;
int rpc_lock_value;
bool_t reply_stat;
assert(cl != NULL);
sigfillset(&newmask);
thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
mutex_lock(&clnt_fd_lock);
while (vc_fd_locks[ct->ct_fd])
cond_wait(&vc_cv[ct->ct_fd], &clnt_fd_lock);
if (__isthreaded)
rpc_lock_value = 1;
else
rpc_lock_value = 0;
vc_fd_locks[ct->ct_fd] = rpc_lock_value;
mutex_unlock(&clnt_fd_lock);
if (!ct->ct_waitset) {
/* If time is not within limits, we ignore it. */
if (time_not_ok(&timeout) == FALSE)
ct->ct_wait = timeout;
}
shipnow =
(xdr_results == NULL && 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 (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
if ((! XDR_PUTBYTES(xdrs, ct->ct_u.ct_mcallc, ct->ct_mpos)) ||
(! XDR_PUTINT32(xdrs, &proc)) ||
(! AUTH_MARSHALL(cl->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);
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
} else {
*(uint32_t *) &ct->ct_u.ct_mcallc[ct->ct_mpos] = htonl(proc);
if (! __rpc_gss_wrap(cl->cl_auth, ct->ct_u.ct_mcallc,
ct->ct_mpos + sizeof(uint32_t),
xdrs, xdr_args, args_ptr)) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status = RPC_CANTENCODEARGS;
(void)xdrrec_endofrecord(xdrs, TRUE);
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
}
if (! xdrrec_endofrecord(xdrs, shipnow)) {
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status = RPC_CANTSEND);
}
if (! shipnow) {
release_fd_lock(ct->ct_fd, mask);
return (RPC_SUCCESS);
}
/*
* Hack to provide rpc-based message passing
*/
if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
release_fd_lock(ct->ct_fd, mask);
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)) {
release_fd_lock(ct->ct_fd, mask);
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;
release_fd_lock(ct->ct_fd, mask);
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(cl->cl_auth,
&reply_msg.acpted_rply.ar_verf)) {
ct->ct_error.re_status = RPC_AUTHERROR;
ct->ct_error.re_why = AUTH_INVALIDRESP;
} else {
if (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
reply_stat = (*xdr_results)(xdrs, results_ptr);
} else {
reply_stat = __rpc_gss_unwrap(cl->cl_auth,
xdrs, xdr_results, results_ptr);
}
if (! reply_stat) {
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(cl->cl_auth, &reply_msg))
goto call_again;
} /* end of unsuccessful completion */
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.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);
}
bool_t byz_reply(SVCXPRT *xpt, struct rpc_msg *m) {
m->rm_xid = xpt->xp_sock;
return xdr_replymsg(out_stream(xpt), m) ;
}
enum clnt_stat qrpc_clnt_raw_call(CLIENT *cl, u_long proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp,
struct timeval utimeout)
{
struct qrpc_clnt_raw_priv *priv = (struct qrpc_clnt_raw_priv *)cl->cl_private;
XDR *xdrs_out = &priv->xdrs_out;
XDR *xdrs_in = &priv->xdrs_in;
struct rpc_msg reply_msg;
struct timeval curr_time;
struct qrpc_frame_hdr *hdr;
uint16_t tmp;
if (xargs) {
xdrs_out->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs_out, priv->xdrs_outpos);
if ((!XDR_PUTLONG(xdrs_out, (long *)&proc)) ||
(!AUTH_MARSHALL(cl->cl_auth, xdrs_out)) ||
(!(*xargs) (xdrs_out, argsp))) {
priv->rpc_error.re_status = RPC_CANTENCODEARGS;
return priv->rpc_error.re_status;
}
tmp = ntohs(priv->out_hdr.seq);
priv->out_hdr.seq = htons(tmp + 1);
if (qrpc_clnt_raw_call_send(priv, XDR_GETPOS(xdrs_out)) < 0) {
return priv->rpc_error.re_status;
}
}
if (gettimeofday(&curr_time, NULL) < 0) {
priv->rpc_error.re_status = RPC_SYSTEMERROR;
return priv->rpc_error.re_status;
}
utimeout.tv_sec += curr_time.tv_sec;
/* Waiting for reply */
do {
if (qrpc_clnt_raw_call_recv(priv) < 0) {
if (priv->rpc_error.re_status == RPC_TIMEDOUT)
continue;
else
break;
}
hdr = (struct qrpc_frame_hdr *)priv->inbuf;
if (xargs && priv->out_hdr.seq != hdr->seq) {
continue;
}
xdrs_in->x_op = XDR_DECODE;
XDR_SETPOS(xdrs_in, 0);
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_in, &reply_msg)) {
if (reply_msg.rm_xid != (unsigned long)getpid()) {
continue;
}
_seterr_reply(&reply_msg, &priv->rpc_error);
if (priv->rpc_error.re_status == RPC_SUCCESS) {
if (!AUTH_VALIDATE(cl->cl_auth, &reply_msg.acpted_rply.ar_verf)) {
priv->rpc_error.re_status = RPC_AUTHERROR;
priv->rpc_error.re_why = AUTH_INVALIDRESP;
}
break;
}
} else {
priv->rpc_error.re_status = RPC_CANTDECODERES;
}
} while ((gettimeofday(&curr_time, NULL) == 0) && (curr_time.tv_sec < utimeout.tv_sec));
return priv->rpc_error.re_status;
}
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 == NULL && 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, (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 (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;
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);
}
/*
* This routine is designed to be able to "ping"
* a list of hosts and create a list of responding
* hosts sorted by response time.
* This must be done without any prior
* contact with the host - therefore the "ping"
* must be to a "well-known" address. The outstanding
* candidate here is the address of "rpcbind".
*
* A response to a ping is no guarantee that the host
* is running NFS, has a mount daemon, or exports
* the required filesystem. If the subsequent
* mount attempt fails then the host will be marked
* "ignore" and the host list will be re-pinged
* (sans the bad host). This process continues
* until a successful mount is achieved or until
* there are no hosts left to try.
*/
enum clnt_stat
nfs_cast(struct mapfs *mfs_in, struct mapfs **mfs_out, int timeout)
{
enum clnt_stat stat;
AUTH *sys_auth = authsys_create_default();
XDR xdr_stream;
register XDR *xdrs = &xdr_stream;
int outlen;
int if_inx;
int tsec;
int flag;
int sent, addr_cnt, rcvd, if_cnt;
fd_set readfds, mask;
register ulong_t xid; /* xid - unique per addr */
register int i;
struct rpc_msg msg;
struct timeval t, rcv_timeout;
char outbuf[UDPMSGSIZE], inbuf[UDPMSGSIZE];
struct t_unitdata t_udata, t_rdata;
struct nd_hostserv hs;
struct nd_addrlist *retaddrs;
struct transp *tr_head;
struct transp *trans, *prev_trans;
struct addrs *a, *prev_addr;
struct tstamps *ts, *prev_ts;
NCONF_HANDLE *nc = NULL;
struct netconfig *nconf;
struct rlimit rl;
int dtbsize;
struct mapfs *mfs;
/*
* For each connectionless transport get a list of
* host addresses. Any single host may have
* addresses on several transports.
*/
addr_cnt = sent = rcvd = 0;
tr_head = NULL;
FD_ZERO(&mask);
/*
* Set the default select size to be the maximum FD_SETSIZE, unless
* the current rlimit is lower.
*/
dtbsize = FD_SETSIZE;
if (getrlimit(RLIMIT_NOFILE, &rl) == 0) {
if (rl.rlim_cur < FD_SETSIZE)
dtbsize = rl.rlim_cur;
}
prev_trans = NULL;
prev_addr = NULL;
prev_ts = NULL;
for (mfs = mfs_in; mfs; mfs = mfs->mfs_next) {
if (trace > 2)
trace_prt(1, "nfs_cast: host=%s\n", mfs->mfs_host);
nc = setnetconfig();
if (nc == NULL) {
stat = RPC_CANTSEND;
goto done_broad;
}
while (nconf = getnetconfig(nc)) {
if (!(nconf->nc_flag & NC_VISIBLE) ||
nconf->nc_semantics != NC_TPI_CLTS ||
(strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0))
continue;
trans = (struct transp *)malloc(sizeof (*trans));
if (trans == NULL) {
syslog(LOG_ERR, "no memory");
stat = RPC_CANTSEND;
goto done_broad;
}
(void) memset(trans, 0, sizeof (*trans));
if (tr_head == NULL)
tr_head = trans;
else
prev_trans->tr_next = trans;
prev_trans = trans;
trans->tr_fd = t_open(nconf->nc_device, O_RDWR, NULL);
if (trans->tr_fd < 0) {
syslog(LOG_ERR, "nfscast: t_open: %s:%m",
nconf->nc_device);
stat = RPC_CANTSEND;
goto done_broad;
}
if (t_bind(trans->tr_fd, (struct t_bind *)NULL,
(struct t_bind *)NULL) < 0) {
syslog(LOG_ERR, "nfscast: t_bind: %m");
stat = RPC_CANTSEND;
goto done_broad;
}
trans->tr_taddr =
/* LINTED pointer alignment */
(struct t_bind *)t_alloc(trans->tr_fd, T_BIND, T_ADDR);
if (trans->tr_taddr == (struct t_bind *)NULL) {
syslog(LOG_ERR, "nfscast: t_alloc: %m");
stat = RPC_SYSTEMERROR;
goto done_broad;
}
trans->tr_device = nconf->nc_device;
FD_SET(trans->tr_fd, &mask);
if_inx = 0;
hs.h_host = mfs->mfs_host;
hs.h_serv = "rpcbind";
if (netdir_getbyname(nconf, &hs, &retaddrs) == ND_OK) {
/*
* If mfs->ignore is previously set for
* this map, clear it. Because a host can
* have either v6 or v4 address
*/
if (mfs->mfs_ignore == 1)
mfs->mfs_ignore = 0;
a = (struct addrs *)malloc(sizeof (*a));
if (a == NULL) {
syslog(LOG_ERR, "no memory");
stat = RPC_CANTSEND;
goto done_broad;
}
(void) memset(a, 0, sizeof (*a));
if (trans->tr_addrs == NULL)
trans->tr_addrs = a;
else
prev_addr->addr_next = a;
prev_addr = a;
a->addr_if_tstamps = NULL;
a->addr_mfs = mfs;
a->addr_addrs = retaddrs;
if_cnt = retaddrs->n_cnt;
while (if_cnt--) {
ts = (struct tstamps *)
malloc(sizeof (*ts));
if (ts == NULL) {
syslog(LOG_ERR, "no memory");
stat = RPC_CANTSEND;
goto done_broad;
}
(void) memset(ts, 0, sizeof (*ts));
ts->ts_penalty = mfs->mfs_penalty;
if (a->addr_if_tstamps == NULL)
a->addr_if_tstamps = ts;
else
prev_ts->ts_next = ts;
prev_ts = ts;
ts->ts_inx = if_inx++;
addr_cnt++;
}
break;
} else {
mfs->mfs_ignore = 1;
if (verbose)
syslog(LOG_ERR,
"%s:%s address not known",
mfs->mfs_host,
strcmp(nconf->nc_proto, NC_INET)?"IPv6":"IPv4");
}
} /* while */
endnetconfig(nc);
nc = NULL;
} /* for */
if (addr_cnt == 0) {
syslog(LOG_ERR, "nfscast: couldn't find addresses");
stat = RPC_CANTSEND;
goto done_broad;
}
(void) gettimeofday(&t, (struct timezone *)0);
xid = (getpid() ^ t.tv_sec ^ t.tv_usec) & ~0xFF;
t.tv_usec = 0;
/* serialize the RPC header */
msg.rm_direction = CALL;
msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
msg.rm_call.cb_prog = RPCBPROG;
/*
* we can not use RPCBVERS here since it doesn't exist in 4.X,
* the fix to bug 1139883 has made the 4.X portmapper silent to
* version mismatches. This causes the RPC call to the remote
* portmapper to simply be ignored if it's not Version 2.
*/
msg.rm_call.cb_vers = PMAPVERS;
msg.rm_call.cb_proc = NULLPROC;
if (sys_auth == (AUTH *)NULL) {
stat = RPC_SYSTEMERROR;
goto done_broad;
}
msg.rm_call.cb_cred = sys_auth->ah_cred;
msg.rm_call.cb_verf = sys_auth->ah_verf;
xdrmem_create(xdrs, outbuf, sizeof (outbuf), XDR_ENCODE);
if (! xdr_callmsg(xdrs, &msg)) {
stat = RPC_CANTENCODEARGS;
goto done_broad;
}
outlen = (int)xdr_getpos(xdrs);
xdr_destroy(xdrs);
t_udata.opt.len = 0;
t_udata.udata.buf = outbuf;
t_udata.udata.len = outlen;
/*
* Basic loop: send packet to all hosts and wait for response(s).
* The response timeout grows larger per iteration.
* A unique xid is assigned to each address in order to
* correctly match the replies.
*/
for (tsec = 4; timeout > 0; tsec *= 2) {
timeout -= tsec;
if (timeout <= 0)
tsec += timeout;
rcv_timeout.tv_sec = tsec;
rcv_timeout.tv_usec = 0;
sent = 0;
for (trans = tr_head; trans; trans = trans->tr_next) {
for (a = trans->tr_addrs; a; a = a->addr_next) {
struct netbuf *if_netbuf =
a->addr_addrs->n_addrs;
ts = a->addr_if_tstamps;
if_cnt = a->addr_addrs->n_cnt;
while (if_cnt--) {
/*
* xid is the first thing in
* preserialized buffer
*/
/* LINTED pointer alignment */
*((ulong_t *)outbuf) =
htonl(xid + ts->ts_inx);
(void) gettimeofday(&(ts->ts_timeval),
(struct timezone *)0);
/*
* Check if already received
* from a previous iteration.
*/
if (ts->ts_rcvd) {
sent++;
ts = ts->ts_next;
continue;
}
t_udata.addr = *if_netbuf++;
if (t_sndudata(trans->tr_fd,
&t_udata) == 0) {
sent++;
}
ts = ts->ts_next;
}
}
}
if (sent == 0) { /* no packets sent ? */
stat = RPC_CANTSEND;
goto done_broad;
}
/*
* Have sent all the packets. Now collect the responses...
*/
rcvd = 0;
recv_again:
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.proc = xdr_void;
readfds = mask;
switch (select(dtbsize, &readfds,
(fd_set *)NULL, (fd_set *)NULL, &rcv_timeout)) {
case 0: /* Timed out */
/*
* If we got at least one response in the
* last interval, then don't wait for any
* more. In theory we should wait for
* the max weighting (penalty) value so
* that a very slow server has a chance to
* respond but this could take a long time
* if the admin has set a high weighting
* value.
*/
if (rcvd > 0)
goto done_broad;
stat = RPC_TIMEDOUT;
continue;
case -1: /* some kind of error */
if (errno == EINTR)
goto recv_again;
syslog(LOG_ERR, "nfscast: select: %m");
if (rcvd == 0)
stat = RPC_CANTRECV;
goto done_broad;
} /* end of select results switch */
for (trans = tr_head; trans; trans = trans->tr_next) {
if (FD_ISSET(trans->tr_fd, &readfds))
break;
}
if (trans == NULL)
goto recv_again;
try_again:
t_rdata.addr = trans->tr_taddr->addr;
t_rdata.udata.buf = inbuf;
t_rdata.udata.maxlen = sizeof (inbuf);
t_rdata.udata.len = 0;
t_rdata.opt.len = 0;
if (t_rcvudata(trans->tr_fd, &t_rdata, &flag) < 0) {
if (errno == EINTR)
goto try_again;
syslog(LOG_ERR, "nfscast: t_rcvudata: %s:%m",
trans->tr_device);
stat = RPC_CANTRECV;
continue;
}
if (t_rdata.udata.len < sizeof (ulong_t))
goto recv_again;
if (flag & T_MORE) {
syslog(LOG_ERR,
"nfscast: t_rcvudata: %s: buffer overflow",
trans->tr_device);
goto recv_again;
}
/*
* see if reply transaction id matches sent id.
* If so, decode the results.
* Note: received addr is ignored, it could be
* different from the send addr if the host has
* more than one addr.
*/
xdrmem_create(xdrs, inbuf, (uint_t)t_rdata.udata.len,
XDR_DECODE);
if (xdr_replymsg(xdrs, &msg)) {
if (msg.rm_reply.rp_stat == MSG_ACCEPTED &&
(msg.rm_xid & ~0xFF) == xid) {
struct addrs *curr_addr;
i = msg.rm_xid & 0xFF;
for (curr_addr = trans->tr_addrs; curr_addr;
curr_addr = curr_addr->addr_next) {
for (ts = curr_addr->addr_if_tstamps; ts;
ts = ts->ts_next)
if (ts->ts_inx == i && !ts->ts_rcvd) {
ts->ts_rcvd = 1;
calc_resp_time(&ts->ts_timeval);
stat = RPC_SUCCESS;
rcvd++;
break;
}
}
} /* otherwise, we just ignore the errors ... */
}
xdrs->x_op = XDR_FREE;
msg.acpted_rply.ar_results.proc = xdr_void;
(void) xdr_replymsg(xdrs, &msg);
XDR_DESTROY(xdrs);
if (rcvd == sent)
goto done_broad;
else
goto recv_again;
}
if (!rcvd)
stat = RPC_TIMEDOUT;
done_broad:
if (rcvd) {
*mfs_out = sort_responses(tr_head);
stat = RPC_SUCCESS;
}
if (nc)
endnetconfig(nc);
free_transports(tr_head);
AUTH_DESTROY(sys_auth);
return (stat);
}
/* 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);
}
enum clnt_stat
clnt_broadcast(u_long prog, /* program number */
u_long vers, /* version number */
u_long proc, /* procedure number */
xdrproc_t xargs, /* xdr routine for args */
caddr_t argsp, /* pointer to args */
xdrproc_t xresults, /* xdr routine for results */
caddr_t resultsp, /* pointer to results */
resultproc_t eachresult) /* call with each result obtained */
{
enum clnt_stat stat;
AUTH *unix_auth;
XDR xdr_stream;
XDR *xdrs = &xdr_stream;
int outlen, inlen, nets;
socklen_t fromlen;
int sock = -1;
int on = 1;
struct pollfd pfd[1];
int i;
int timo;
bool_t done = FALSE;
u_long xid;
u_long port;
struct in_addr *addrs = NULL;
struct sockaddr_in baddr, raddr; /* broadcast and response addresses */
struct rmtcallargs a;
struct rmtcallres r;
struct rpc_msg msg;
char outbuf[MAX_BROADCAST_SIZE], inbuf[UDPMSGSIZE];
if ((unix_auth = authunix_create_default()) == NULL) {
stat = RPC_AUTHERROR;
goto done_broad;
}
/*
* initialization: create a socket, a broadcast address, and
* preserialize the arguments into a send buffer.
*/
if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
stat = RPC_CANTSEND;
goto done_broad;
}
#ifdef SO_BROADCAST
if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &on, sizeof (on)) < 0) {
stat = RPC_CANTSEND;
goto done_broad;
}
#endif /* def SO_BROADCAST */
pfd[0].fd = sock;
pfd[0].events = POLLIN;
nets = newgetbroadcastnets(&addrs);
if (nets == 0) {
stat = RPC_CANTSEND;
goto done_broad;
}
memset(&baddr, 0, sizeof (baddr));
baddr.sin_len = sizeof(struct sockaddr_in);
baddr.sin_family = AF_INET;
baddr.sin_port = htons(PMAPPORT);
baddr.sin_addr.s_addr = htonl(INADDR_ANY);
msg.rm_xid = xid = arc4random();
msg.rm_direction = CALL;
msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
msg.rm_call.cb_prog = PMAPPROG;
msg.rm_call.cb_vers = PMAPVERS;
msg.rm_call.cb_proc = PMAPPROC_CALLIT;
msg.rm_call.cb_cred = unix_auth->ah_cred;
msg.rm_call.cb_verf = unix_auth->ah_verf;
a.prog = prog;
a.vers = vers;
a.proc = proc;
a.xdr_args = xargs;
a.args_ptr = argsp;
r.port_ptr = &port;
r.xdr_results = xresults;
r.results_ptr = resultsp;
xdrmem_create(xdrs, outbuf, MAX_BROADCAST_SIZE, XDR_ENCODE);
if (!xdr_callmsg(xdrs, &msg) || !xdr_rmtcall_args(xdrs, &a)) {
stat = RPC_CANTENCODEARGS;
goto done_broad;
}
outlen = (int)xdr_getpos(xdrs);
xdr_destroy(xdrs);
/*
* Basic loop: broadcast a packet and wait a while for response(s).
* The response timeout grows larger per iteration.
*
* XXX This will loop about 5 times the stop. If there are
* lots of signals being received by the process it will quit
* send them all in one quick burst, not paying attention to
* the intended function of sending them slowly over half a
* minute or so
*/
for (timo = 4000; timo <= 14000; timo += 2000) {
for (i = 0; i < nets; i++) {
baddr.sin_addr = addrs[i];
if (sendto(sock, outbuf, outlen, 0,
(struct sockaddr *)&baddr,
sizeof (struct sockaddr)) != outlen) {
stat = RPC_CANTSEND;
goto done_broad;
}
}
if (eachresult == NULL) {
stat = RPC_SUCCESS;
goto done_broad;
}
recv_again:
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where = (caddr_t)&r;
msg.acpted_rply.ar_results.proc = xdr_rmtcallres;
switch (poll(pfd, 1, timo)) {
case 0: /* timed out */
stat = RPC_TIMEDOUT;
continue;
case 1:
if (pfd[0].revents & POLLNVAL)
errno = EBADF;
else if (pfd[0].revents & POLLERR)
errno = EIO;
else
break;
/* FALLTHROUGH */
case -1: /* some kind of error */
if (errno == EINTR)
goto recv_again;
stat = RPC_CANTRECV;
goto done_broad;
}
try_again:
fromlen = sizeof(struct sockaddr);
inlen = recvfrom(sock, inbuf, UDPMSGSIZE, 0,
(struct sockaddr *)&raddr, &fromlen);
if (inlen < 0) {
if (errno == EINTR)
goto try_again;
stat = RPC_CANTRECV;
goto done_broad;
}
if (inlen < sizeof(u_int32_t))
goto recv_again;
/*
* see if reply transaction id matches sent id.
* If so, decode the results.
*/
xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
if (xdr_replymsg(xdrs, &msg)) {
if ((msg.rm_xid == xid) &&
(msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(msg.acpted_rply.ar_stat == SUCCESS)) {
raddr.sin_port = htons((u_short)port);
done = (*eachresult)(resultsp, &raddr);
}
/* otherwise, we just ignore the errors ... */
}
xdrs->x_op = XDR_FREE;
msg.acpted_rply.ar_results.proc = xdr_void;
(void)xdr_replymsg(xdrs, &msg);
(void)(*xresults)(xdrs, resultsp);
xdr_destroy(xdrs);
if (done) {
stat = RPC_SUCCESS;
goto done_broad;
} else {
goto recv_again;
}
}
done_broad:
if (addrs)
free(addrs);
if (sock >= 0)
(void)close(sock);
if (unix_auth != NULL)
AUTH_DESTROY(unix_auth);
return (stat);
}
static enum clnt_stat clntudp_call(CLIENT *cl, unsigned long proc,
xdrproc_t xargs, char* argsp,
xdrproc_t xresults, char* resultsp,
struct timeval utimeout)
{
register struct cu_data *cu = (struct cu_data *) cl->cl_private;
register XDR *xdrs;
register int outlen;
register int inlen;
socklen_t fromlen;
struct sockaddr_in from;
struct rpc_msg reply_msg;
XDR reply_xdrs;
bool_t ok;
int nrefreshes = 2; /* number of times to refresh cred */
call_again:
xdrs = &(cu->cu_outxdrs);
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, cu->cu_xdrpos);
/*
* the transaction is the first thing in the out buffer
*/
(*(unsigned long *) (cu->cu_outbuf))++;
if ((!XDR_PUTLONG(xdrs, (long *) &proc)) ||
(!AUTH_MARSHALL(cl->cl_auth, xdrs)) || (!(*xargs) (xdrs, argsp)))
return (cu->cu_error.re_status = RPC_CANTENCODEARGS);
outlen = (int) XDR_GETPOS(xdrs);
send_again:
if (sendto(cu->cu_sock, cu->cu_outbuf, outlen, 0,
(struct sockaddr *) &(cu->cu_raddr), cu->cu_rlen)
!= outlen)
{
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTSEND);
}
/*
* 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 = resultsp;
reply_msg.acpted_rply.ar_results.proc = xresults;
/* do recv */
do
{
fromlen = sizeof(struct sockaddr);
inlen = recvfrom(cu->cu_sock, cu->cu_inbuf,
(int) cu->cu_recvsz, 0,
(struct sockaddr *) &from, &fromlen);
}while (inlen < 0 && errno == EINTR);
if (inlen < 4)
{
rt_kprintf("recv error, len %d\n", inlen);
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTRECV);
}
/* see if reply transaction id matches sent id */
if (*((uint32_t *) (cu->cu_inbuf)) != *((uint32_t *) (cu->cu_outbuf)))
goto send_again;
/* we now assume we have the proper reply */
/*
* now decode and validate the response
*/
xdrmem_create(&reply_xdrs, cu->cu_inbuf, (unsigned int) inlen, XDR_DECODE);
ok = xdr_replymsg(&reply_xdrs, &reply_msg);
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
if (ok)
{
_seterr_reply(&reply_msg, &(cu->cu_error));
if (cu->cu_error.re_status == RPC_SUCCESS)
{
if (!AUTH_VALIDATE(cl->cl_auth,
&reply_msg.acpted_rply.ar_verf))
{
cu->cu_error.re_status = RPC_AUTHERROR;
cu->cu_error.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));
}
} /* end successful completion */
else
{
/* maybe our credentials need to be refreshed ... */
if (nrefreshes > 0 && AUTH_REFRESH(cl->cl_auth))
{
nrefreshes--;
goto call_again;
}
} /* end of unsuccessful completion */
} /* end of valid reply message */
else
{
cu->cu_error.re_status = RPC_CANTDECODERES;
}
return (cu->cu_error.re_status);
}
enum clnt_stat
clnt_broadcast(
unsigned long prog, /* program number */
unsigned long vers, /* version number */
unsigned long proc, /* procedure number */
xdrproc_t xargs, /* xdr routine for args */
char* argsp, /* pointer to args */
xdrproc_t xresults, /* xdr routine for results */
char* resultsp, /* pointer to results */
resultproc_t eachresult) /* call with each result obtained */
{
enum clnt_stat stat;
AUTH *unix_auth = authunix_create_default();
XDR xdr_stream;
register XDR *xdrs = &xdr_stream;
int outlen, nets;
ssize_t inlen;
socklen_t fromlen;
register int sock;
int on = 1;
#ifdef FD_SETSIZE
fd_set mask;
fd_set readfds;
#else
int readfds;
register int mask;
#endif /* def FD_SETSIZE */
register int i;
bool_t done = FALSE;
register unsigned long xid;
unsigned long port;
struct in_addr addrs[20];
struct sockaddr_in baddr, raddr; /* broadcast and response addresses */
struct rmtcallargs a;
struct rmtcallres r;
struct rpc_msg msg;
struct timeval t;
char outbuf[MAX_BROADCAST_SIZE], inbuf[UDPMSGSIZE];
/*
* initialization: create a socket, a broadcast address, and
* preserialize the arguments into a send buffer.
*/
if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
perror("Cannot create socket for broadcast rpc");
stat = RPC_CANTSEND;
goto done_broad;
}
#ifdef SO_BROADCAST
if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &on, sizeof (on)) < 0) {
perror("Cannot set socket option SO_BROADCAST");
stat = RPC_CANTSEND;
goto done_broad;
}
#endif /* def SO_BROADCAST */
#ifdef FD_SETSIZE
FD_ZERO(&mask);
FD_SET(sock, &mask);
#else
mask = (1 << sock);
#endif /* def FD_SETSIZE */
nets = getbroadcastnets(addrs, sock, inbuf);
bzero((char *)&baddr, sizeof (baddr));
baddr.sin_family = AF_INET;
baddr.sin_port = htons(PMAPPORT);
baddr.sin_addr.s_addr = htonl(INADDR_ANY);
/* baddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY); */
(void)gettimeofday(&t, NULL);
msg.rm_xid = xid = getpid() ^ t.tv_sec ^ t.tv_usec;
t.tv_usec = 0;
msg.rm_direction = CALL;
msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
msg.rm_call.cb_prog = PMAPPROG;
msg.rm_call.cb_vers = PMAPVERS;
msg.rm_call.cb_proc = PMAPPROC_CALLIT;
msg.rm_call.cb_cred = unix_auth->ah_cred;
msg.rm_call.cb_verf = unix_auth->ah_verf;
a.prog = prog;
a.vers = vers;
a.proc = proc;
a.xdr_args = xargs;
a.args_ptr = argsp;
r.port_ptr = &port;
r.xdr_results = xresults;
r.results_ptr = resultsp;
xdrmem_create(xdrs, outbuf, MAX_BROADCAST_SIZE, XDR_ENCODE);
if ((! xdr_callmsg(xdrs, &msg)) || (! xdr_rmtcall_args(xdrs, &a))) {
stat = RPC_CANTENCODEARGS;
goto done_broad;
}
outlen = (int)xdr_getpos(xdrs);
xdr_destroy(xdrs);
/*
* Basic loop: broadcast a packet and wait a while for response(s).
* The response timeout grows larger per iteration.
*/
for (t.tv_sec = 4; t.tv_sec <= 14; t.tv_sec += 2) {
for (i = 0; i < nets; i++) {
baddr.sin_addr = addrs[i];
if (sendto(sock, outbuf, outlen, 0,
(struct sockaddr *)&baddr,
sizeof (struct sockaddr)) != (ssize_t)outlen) {
perror("Cannot send broadcast packet");
stat = RPC_CANTSEND;
goto done_broad;
}
}
if (eachresult == NULL) {
stat = RPC_SUCCESS;
goto done_broad;
}
recv_again:
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where = (char*)&r;
msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_rmtcallres;
readfds = mask;
{
struct timeval tmp = t;
switch (select(sock+1, &readfds, NULL,
NULL, &tmp)) {
case 0: /* timed out */
stat = RPC_TIMEDOUT;
continue;
case -1: /* some kind of error */
if (errno == EINTR)
goto recv_again;
perror("Broadcast select problem");
stat = RPC_CANTRECV;
goto done_broad;
} /* end of select results switch */
} /* end of temporary timeout variable */
try_again:
fromlen = (socklen_t)sizeof(struct sockaddr);
inlen = recvfrom(sock, inbuf, UDPMSGSIZE, 0,
(struct sockaddr *)&raddr, &fromlen);
if (inlen < 0) {
if (errno == EINTR)
goto try_again;
perror("Cannot receive reply to broadcast");
stat = RPC_CANTRECV;
goto done_broad;
}
if (inlen < sizeof(uint32_t))
goto recv_again;
/*
* see if reply transaction id matches sent id.
* If so, decode the results.
*/
xdrmem_create(xdrs, inbuf, (unsigned)inlen, XDR_DECODE);
if (xdr_replymsg(xdrs, &msg)) {
if ((msg.rm_xid == xid) &&
(msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(msg.acpted_rply.ar_stat == SUCCESS)) {
raddr.sin_port = htons((unsigned short)port);
done = (*eachresult)(resultsp, &raddr);
}
/* otherwise, we just ignore the errors ... */
} else {
#ifdef notdef
/* some kind of deserialization problem ... */
if (msg.rm_xid == xid)
(void)fprintf(stderr, "Broadcast deserialization problem");
/* otherwise, just random garbage */
#endif
}
xdrs->x_op = XDR_FREE;
msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void;
(void)xdr_replymsg(xdrs, &msg);
(void)(*xresults)(xdrs, resultsp);
xdr_destroy(xdrs);
if (done) {
stat = RPC_SUCCESS;
goto done_broad;
} else {
goto recv_again;
}
}
done_broad:
(void)close(sock);
AUTH_DESTROY(unix_auth);
return (stat);
}