/*
* Usage:
* xprt = svc_vc_create(sock, send_buf_size, recv_buf_size);
*
* Creates, registers, and returns a (rpc) tcp based transporter.
* Once *xprt is initialized, it is registered as a transporter
* see (svc.h, xprt_register). This routine returns
* a NULL if a problem occurred.
*
* The filedescriptor passed in is expected to refer to a bound, but
* not yet connected socket.
*
* Since streams do buffered io similar to stdio, the caller can specify
* how big the send and receive buffers are via the second and third parms;
* 0 => use the system default.
*/
SVCXPRT *
svc_vc_create(int fd, u_int sendsize, u_int recvsize)
{
SVCXPRT *xprt = NULL;
struct cf_rendezvous *r = NULL;
struct __rpc_sockinfo si;
struct sockaddr_storage sslocal;
socklen_t slen;
if (!__rpc_fd2sockinfo(fd, &si))
return NULL;
r = mem_alloc(sizeof(*r));
if (r == NULL) {
warnx("svc_vc_create: out of memory");
goto cleanup_svc_vc_create;
}
r->sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize);
r->recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize);
r->maxrec = __svc_maxrec;
xprt = mem_alloc(sizeof(SVCXPRT));
if (xprt == NULL) {
warnx("svc_vc_create: out of memory");
goto cleanup_svc_vc_create;
}
xprt->xp_tp = NULL;
xprt->xp_p1 = r;
xprt->xp_p2 = NULL;
xprt->xp_p3 = NULL;
xprt->xp_verf = _null_auth;
svc_vc_rendezvous_ops(xprt);
xprt->xp_port = (u_short)-1; /* It is the rendezvouser */
xprt->xp_fd = fd;
slen = sizeof (struct sockaddr_storage);
if (_getsockname(fd, (struct sockaddr *)(void *)&sslocal, &slen) < 0) {
warnx("svc_vc_create: could not retrieve local addr");
goto cleanup_svc_vc_create;
}
xprt->xp_ltaddr.maxlen = xprt->xp_ltaddr.len = sslocal.ss_len;
xprt->xp_ltaddr.buf = mem_alloc((size_t)sslocal.ss_len);
if (xprt->xp_ltaddr.buf == NULL) {
warnx("svc_vc_create: no mem for local addr");
goto cleanup_svc_vc_create;
}
memcpy(xprt->xp_ltaddr.buf, &sslocal, (size_t)sslocal.ss_len);
xprt->xp_rtaddr.maxlen = sizeof (struct sockaddr_storage);
xprt_register(xprt);
return (xprt);
cleanup_svc_vc_create:
if (xprt)
mem_free(xprt, sizeof(*xprt));
if (r != NULL)
mem_free(r, sizeof(*r));
return (NULL);
}
SVCXPRT *
svc_dg_create(SVCPOOL *pool, struct socket *so, size_t sendsize,
size_t recvsize)
{
SVCXPRT *xprt;
struct __rpc_sockinfo si;
struct sockaddr* sa;
int error;
if (!__rpc_socket2sockinfo(so, &si)) {
printf(svc_dg_str, svc_dg_err1);
return (NULL);
}
/*
* Find the receive and the send size
*/
sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize);
recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize);
if ((sendsize == 0) || (recvsize == 0)) {
printf(svc_dg_str, svc_dg_err2);
return (NULL);
}
xprt = svc_xprt_alloc();
sx_init(&xprt->xp_lock, "xprt->xp_lock");
xprt->xp_pool = pool;
xprt->xp_socket = so;
xprt->xp_p1 = NULL;
xprt->xp_p2 = NULL;
xprt->xp_ops = &svc_dg_ops;
CURVNET_SET(so->so_vnet);
error = so->so_proto->pr_usrreqs->pru_sockaddr(so, &sa);
CURVNET_RESTORE();
if (error)
goto freedata;
memcpy(&xprt->xp_ltaddr, sa, sa->sa_len);
free(sa, M_SONAME);
xprt_register(xprt);
SOCKBUF_LOCK(&so->so_rcv);
soupcall_set(so, SO_RCV, svc_dg_soupcall, xprt);
SOCKBUF_UNLOCK(&so->so_rcv);
return (xprt);
freedata:
(void) printf(svc_dg_str, __no_mem_str);
if (xprt) {
svc_xprt_free(xprt);
}
return (NULL);
}
/*
* Create a client handle for a connection.
* Default options are set, which the user can change using clnt_control()'s.
* The rpc/vc package does buffering similar to stdio, so the client
* must pick send and receive buffer sizes, 0 => use the default.
* NB: fd is copied into a private area.
* NB: The rpch->cl_auth is set null authentication. Caller may wish to
* set this something more useful.
*
* fd should be an open socket
*
* fd - open file descriptor
* raddr - servers address
* prog - program number
* vers - version number
* sendsz - buffer send size
* recvsz - buffer recv size
*/
CLIENT *
clnt_vc_create(int fd, const struct netbuf *raddr, const rpcprog_t prog,
const rpcvers_t vers, u_int sendsz, u_int recvsz)
{
CLIENT *cl; /* client handle */
struct ct_data *ct = NULL; /* client handle */
struct timeval now;
struct rpc_msg call_msg;
static u_int32_t disrupt;
sigset_t mask;
sigset_t newmask;
struct sockaddr_storage ss;
socklen_t slen;
struct __rpc_sockinfo si;
if (disrupt == 0)
disrupt = (u_int32_t)(long)raddr;
cl = (CLIENT *)mem_alloc(sizeof (*cl));
ct = (struct ct_data *)mem_alloc(sizeof (*ct));
if ((cl == (CLIENT *)NULL) || (ct == (struct ct_data *)NULL)) {
(void) syslog(LOG_ERR, clnt_vc_errstr,
clnt_vc_str, __no_mem_str);
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
goto err;
}
ct->ct_addr.buf = NULL;
sigfillset(&newmask);
thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
mutex_lock(&clnt_fd_lock);
if (vc_fd_locks == (int *) NULL) {
int cv_allocsz, fd_allocsz;
int dtbsize = __rpc_dtbsize();
fd_allocsz = dtbsize * sizeof (int);
vc_fd_locks = (int *) mem_alloc(fd_allocsz);
if (vc_fd_locks == (int *) NULL) {
mutex_unlock(&clnt_fd_lock);
thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
goto err;
} else
memset(vc_fd_locks, '\0', fd_allocsz);
assert(vc_cv == (cond_t *) NULL);
cv_allocsz = dtbsize * sizeof (cond_t);
vc_cv = (cond_t *) mem_alloc(cv_allocsz);
if (vc_cv == (cond_t *) NULL) {
mem_free(vc_fd_locks, fd_allocsz);
vc_fd_locks = (int *) NULL;
mutex_unlock(&clnt_fd_lock);
thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
goto err;
} else {
int i;
for (i = 0; i < dtbsize; i++)
cond_init(&vc_cv[i], 0, (void *) 0);
}
} else
assert(vc_cv != (cond_t *) NULL);
/*
* XXX - fvdl connecting while holding a mutex?
*/
slen = sizeof ss;
if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
if (errno != ENOTCONN) {
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
mutex_unlock(&clnt_fd_lock);
thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
goto err;
}
if (_connect(fd, (struct sockaddr *)raddr->buf, raddr->len) < 0){
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
mutex_unlock(&clnt_fd_lock);
thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
goto err;
}
}
mutex_unlock(&clnt_fd_lock);
thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
if (!__rpc_fd2sockinfo(fd, &si))
goto err;
ct->ct_closeit = FALSE;
/*
* Set up private data struct
*/
ct->ct_fd = fd;
ct->ct_wait.tv_usec = 0;
ct->ct_waitset = FALSE;
ct->ct_addr.buf = malloc(raddr->maxlen);
if (ct->ct_addr.buf == NULL)
goto err;
memcpy(ct->ct_addr.buf, raddr->buf, raddr->len);
ct->ct_addr.len = raddr->len;
ct->ct_addr.maxlen = raddr->maxlen;
/*
* Initialize call message
*/
(void)gettimeofday(&now, NULL);
call_msg.rm_xid = ((u_int32_t)++disrupt) ^ __RPC_GETXID(&now);
call_msg.rm_direction = CALL;
call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
call_msg.rm_call.cb_prog = (u_int32_t)prog;
call_msg.rm_call.cb_vers = (u_int32_t)vers;
/*
* pre-serialize the static part of the call msg and stash it away
*/
xdrmem_create(&(ct->ct_xdrs), ct->ct_u.ct_mcallc, MCALL_MSG_SIZE,
XDR_ENCODE);
if (! xdr_callhdr(&(ct->ct_xdrs), &call_msg)) {
if (ct->ct_closeit) {
(void)_close(fd);
}
goto err;
}
ct->ct_mpos = XDR_GETPOS(&(ct->ct_xdrs));
XDR_DESTROY(&(ct->ct_xdrs));
assert(ct->ct_mpos + sizeof(uint32_t) <= MCALL_MSG_SIZE);
/*
* Create a client handle which uses xdrrec for serialization
* and authnone for authentication.
*/
cl->cl_ops = clnt_vc_ops();
cl->cl_private = ct;
cl->cl_auth = authnone_create();
sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz);
recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz);
xdrrec_create(&(ct->ct_xdrs), sendsz, recvsz,
cl->cl_private, read_vc, write_vc);
return (cl);
err:
if (ct) {
if (ct->ct_addr.len)
mem_free(ct->ct_addr.buf, ct->ct_addr.len);
mem_free(ct, sizeof (struct ct_data));
}
if (cl)
mem_free(cl, sizeof (CLIENT));
return ((CLIENT *)NULL);
}
/*
* Connection less client creation returns with client handle parameters.
* Default options are set, which the user can change using clnt_control().
* fd should be open and bound.
* NB: The rpch->cl_auth is initialized to null authentication.
* Caller may wish to set this something more useful.
*
* sendsz and recvsz are the maximum allowable packet sizes that can be
* sent and received. Normally they are the same, but they can be
* changed to improve the program efficiency and buffer allocation.
* If they are 0, use the transport default.
*
* If svcaddr is NULL, returns NULL.
*/
CLIENT *
clnt_dg_create(const int fd, struct netbuf *svcaddr, const rpcprog_t program,
const rpcvers_t version, const uint_t sendsz, const uint_t recvsz)
{
CLIENT *cl = NULL; /* client handle */
struct cu_data *cu = NULL; /* private data */
struct t_unitdata *tr_data;
struct t_info tinfo;
struct timeval now;
struct rpc_msg call_msg;
uint_t ssz;
uint_t rsz;
sig_mutex_lock(&dgtbl_lock);
if ((dgtbl == NULL) && ((dgtbl = rpc_fd_init()) == NULL)) {
sig_mutex_unlock(&dgtbl_lock);
goto err1;
}
sig_mutex_unlock(&dgtbl_lock);
if (svcaddr == NULL) {
rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
return (NULL);
}
if (t_getinfo(fd, &tinfo) == -1) {
rpc_createerr.cf_stat = RPC_TLIERROR;
rpc_createerr.cf_error.re_errno = 0;
rpc_createerr.cf_error.re_terrno = t_errno;
return (NULL);
}
/*
* Setup to rcv datagram error, we ignore any errors returned from
* __rpc_tli_set_options() as SO_DGRAM_ERRIND is only relevant to
* udp/udp6 transports and this point in the code we only know that
* we are using a connection less transport.
*/
if (tinfo.servtype == T_CLTS)
(void) __rpc_tli_set_options(fd, SOL_SOCKET, SO_DGRAM_ERRIND,
1);
/*
* Find the receive and the send size
*/
ssz = __rpc_get_t_size((int)sendsz, tinfo.tsdu);
rsz = __rpc_get_t_size((int)recvsz, tinfo.tsdu);
if ((ssz == 0) || (rsz == 0)) {
rpc_createerr.cf_stat = RPC_TLIERROR; /* XXX */
rpc_createerr.cf_error.re_errno = 0;
rpc_createerr.cf_error.re_terrno = 0;
return (NULL);
}
if ((cl = malloc(sizeof (CLIENT))) == NULL)
goto err1;
/*
* Should be multiple of 4 for XDR.
*/
ssz = ((ssz + 3) / 4) * 4;
rsz = ((rsz + 3) / 4) * 4;
cu = malloc(sizeof (*cu) + ssz + rsz);
if (cu == NULL)
goto err1;
if ((cu->cu_raddr.buf = malloc(svcaddr->len)) == NULL)
goto err1;
(void) memcpy(cu->cu_raddr.buf, svcaddr->buf, (size_t)svcaddr->len);
cu->cu_raddr.len = cu->cu_raddr.maxlen = svcaddr->len;
cu->cu_outbuf_start = &cu->cu_inbuf[rsz];
/* Other values can also be set through clnt_control() */
cu->cu_wait.tv_sec = 15; /* heuristically chosen */
cu->cu_wait.tv_usec = 0;
cu->cu_total.tv_sec = -1;
cu->cu_total.tv_usec = -1;
cu->cu_sendsz = ssz;
cu->cu_recvsz = rsz;
(void) gettimeofday(&now, NULL);
call_msg.rm_xid = getpid() ^ now.tv_sec ^ now.tv_usec;
call_msg.rm_call.cb_prog = program;
call_msg.rm_call.cb_vers = version;
xdrmem_create(&(cu->cu_outxdrs), cu->cu_outbuf, ssz, XDR_ENCODE);
if (!xdr_callhdr(&(cu->cu_outxdrs), &call_msg)) {
rpc_createerr.cf_stat = RPC_CANTENCODEARGS; /* XXX */
rpc_createerr.cf_error.re_errno = 0;
rpc_createerr.cf_error.re_terrno = 0;
goto err2;
}
cu->cu_xdrpos = XDR_GETPOS(&(cu->cu_outxdrs));
XDR_DESTROY(&(cu->cu_outxdrs));
xdrmem_create(&(cu->cu_outxdrs), cu->cu_outbuf_start, ssz, XDR_ENCODE);
/* LINTED pointer alignment */
tr_data = (struct t_unitdata *)t_alloc(fd, T_UNITDATA, T_ADDR | T_OPT);
if (tr_data == NULL) {
goto err1;
}
tr_data->udata.maxlen = cu->cu_recvsz;
tr_data->udata.buf = cu->cu_inbuf;
cu->cu_tr_data = tr_data;
/*
* By default, closeit is always FALSE. It is users responsibility
* to do a t_close on it, else the user may use clnt_control
* to let clnt_destroy do it for him/her.
*/
cu->cu_closeit = FALSE;
cu->cu_fd = fd;
cl->cl_ops = clnt_dg_ops();
cl->cl_private = (caddr_t)cu;
cl->cl_auth = authnone_create();
cl->cl_tp = NULL;
cl->cl_netid = NULL;
cu->pfdp.fd = cu->cu_fd;
cu->pfdp.events = MASKVAL;
return (cl);
err1:
(void) syslog(LOG_ERR, mem_err_clnt_dg);
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = 0;
err2:
if (cl) {
free(cl);
if (cu) {
free(cu->cu_raddr.buf);
free(cu);
}
}
return (NULL);
}
SVCXPRT *
svc_dg_ncreate(int fd, u_int sendsize, u_int recvsize)
{
SVCXPRT *xprt;
struct svc_dg_data *su = NULL;
struct __rpc_sockinfo si;
struct sockaddr_storage ss;
socklen_t slen;
uint32_t oflags;
if (!__rpc_fd2sockinfo(fd, &si)) {
__warnx(TIRPC_DEBUG_FLAG_SVC_DG,
svc_dg_str, svc_dg_err1);
return (NULL);
}
/*
* Find the receive and the send size
*/
sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize);
recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize);
if ((sendsize == 0) || (recvsize == 0)) {
__warnx(TIRPC_DEBUG_FLAG_SVC_DG,
svc_dg_str, svc_dg_err2);
return (NULL);
}
xprt = mem_alloc(sizeof (SVCXPRT));
if (xprt == NULL)
goto freedata;
memset(xprt, 0, sizeof (SVCXPRT));
/* Init SVCXPRT locks, etc */
mutex_init(&xprt->xp_lock, NULL);
mutex_init(&xprt->xp_auth_lock, NULL);
su = mem_alloc(sizeof (*su));
if (su == NULL)
goto freedata;
su->su_iosz = ((MAX(sendsize, recvsize) + 3) / 4) * 4;
if ((rpc_buffer(xprt) = mem_alloc(su->su_iosz)) == NULL)
goto freedata;
xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), su->su_iosz,
XDR_DECODE);
su->su_cache = NULL;
xprt->xp_flags = SVC_XPRT_FLAG_NONE;
xprt->xp_refcnt = 1;
xprt->xp_fd = fd;
xprt->xp_p2 = su;
svc_dg_ops(xprt);
xprt->xp_rtaddr.maxlen = sizeof (struct sockaddr_storage);
slen = sizeof ss;
if (getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0)
goto freedata;
__rpc_set_netbuf(&xprt->xp_ltaddr, &ss, slen);
switch (ss.ss_family) {
case AF_INET:
xprt->xp_port = ntohs(((struct sockaddr_in *) &ss)->sin_port);
break;
#ifdef INET6
case AF_INET6:
xprt->xp_port = ntohs(((struct sockaddr_in6 *) &ss)->sin6_port);
break;
#endif
case AF_LOCAL:
/* no port */
break;
default:
break;
}
/* Enable reception of IP*_PKTINFO control msgs */
svc_dg_enable_pktinfo(fd, &si);
/* Make reachable */
xprt->xp_p5 = rpc_dplx_lookup_rec(xprt->xp_fd,
RPC_DPLX_FLAG_NONE, &oflags); /* ref+1 */
svc_rqst_init_xprt(xprt);
/* Conditional xprt_register */
if (! (__svc_params->flags & SVC_FLAG_NOREG_XPRTS))
xprt_register(xprt);
return (xprt);
freedata:
__warnx(TIRPC_DEBUG_FLAG_SVC_DG,
svc_dg_str, __no_mem_str);
if (xprt) {
if (su)
(void) mem_free(su, sizeof (*su));
svc_rqst_finalize_xprt(xprt, SVC_RQST_FLAG_NONE);
(void) mem_free(xprt, sizeof (SVCXPRT));
}
return (NULL);
}
int
rpc_reg(const rpcprog_t prognum, const rpcvers_t versnum,
const rpcproc_t procnum, char *(*progname)(), const xdrproc_t inproc,
const xdrproc_t outproc, const char *nettype)
{
struct netconfig *nconf;
int done = FALSE;
void *handle;
extern mutex_t proglst_lock;
if (procnum == NULLPROC) {
(void) syslog(LOG_ERR, (const char *) "%s: %s %d",
rpc_reg_msg,
(const char *) "can't reassign procedure number %d",
NULLPROC);
return (-1);
}
if (nettype == NULL)
nettype = "netpath"; /* The default behavior */
if ((handle = __rpc_setconf((char *)nettype)) == NULL) {
(void) syslog(LOG_ERR, rpc_reg_err, rpc_reg_msg, __reg_err1);
return (-1);
}
/* VARIABLES PROTECTED BY proglst_lock: proglst */
(void) mutex_lock(&proglst_lock);
while (nconf = __rpc_getconf(handle)) {
struct proglst *pl;
SVCXPRT *svcxprt;
int madenow;
uint_t recvsz;
char *xdrbuf;
char *netid;
madenow = FALSE;
svcxprt = NULL;
for (pl = proglst; pl; pl = pl->p_nxt)
if (strcmp(pl->p_netid, nconf->nc_netid) == 0) {
svcxprt = pl->p_transp;
xdrbuf = pl->p_xdrbuf;
recvsz = pl->p_recvsz;
netid = pl->p_netid;
break;
}
if (svcxprt == NULL) {
struct t_info tinfo;
svcxprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
if (svcxprt == NULL)
continue;
if (t_getinfo(svcxprt->xp_fd, &tinfo) == -1) {
char errorstr[100];
__tli_sys_strerror(errorstr, sizeof (errorstr),
t_errno, errno);
(void) syslog(LOG_ERR, "%s : %s : %s",
rpc_reg_msg, "t_getinfo failed",
errorstr);
SVC_DESTROY(svcxprt);
continue;
}
if ((recvsz = __rpc_get_t_size(0, tinfo.tsdu)) == 0) {
(void) syslog(LOG_ERR, rpc_reg_err, rpc_reg_msg,
__reg_err3);
SVC_DESTROY(svcxprt);
continue;
}
if (((xdrbuf = malloc((unsigned)recvsz)) == NULL) ||
((netid = strdup(nconf->nc_netid)) == NULL)) {
(void) syslog(LOG_ERR, rpc_reg_err, rpc_reg_msg,
__no_mem_str);
SVC_DESTROY(svcxprt);
break;
}
madenow = TRUE;
}
/*
* Check if this (program, version, netid) had already been
* registered. The check may save a few RPC calls to rpcbind
*/
for (pl = proglst; pl; pl = pl->p_nxt)
if ((pl->p_prognum == prognum) &&
(pl->p_versnum == versnum) &&
(strcmp(pl->p_netid, netid) == 0))
break;
if (pl == NULL) { /* Not yet */
/*
* Note that if we're using a portmapper
* instead of rpcbind then we can't do an
* unregister operation here.
*
* The reason is that the portmapper unset
* operation removes all the entries for a
* given program/version regardelss of
* transport protocol.
*
* The caller of this routine needs to ensure
* that __pmap_unset() has been called for all
* program/version service pairs they plan
* to support before they start registering
* each program/version/protocol triplet.
*/
if (!use_portmapper)
(void) rpcb_unset(prognum, versnum, nconf);
} else {
/* so that svc_reg does not call rpcb_set() */
nconf = NULL;
}
if (!svc_reg(svcxprt, prognum, versnum, universal, nconf)) {
(void) syslog(LOG_ERR,
"%s couldn't register prog %d vers %d for %s",
rpc_reg_msg, prognum, versnum, netid);
if (madenow) {
SVC_DESTROY(svcxprt);
free(xdrbuf);
free(netid);
}
continue;
}
pl = malloc(sizeof (struct proglst));
if (pl == NULL) {
(void) syslog(LOG_ERR, rpc_reg_err, rpc_reg_msg,
__no_mem_str);
if (madenow) {
SVC_DESTROY(svcxprt);
free(xdrbuf);
free(netid);
}
break;
}
pl->p_progname = progname;
pl->p_prognum = prognum;
pl->p_versnum = versnum;
pl->p_procnum = procnum;
pl->p_inproc = inproc;
pl->p_outproc = outproc;
pl->p_transp = svcxprt;
pl->p_xdrbuf = xdrbuf;
pl->p_recvsz = recvsz;
pl->p_netid = netid;
pl->p_nxt = proglst;
proglst = pl;
done = TRUE;
}
__rpc_endconf(handle);
(void) mutex_unlock(&proglst_lock);
if (done == FALSE) {
(void) syslog(LOG_ERR,
(const char *) "%s cant find suitable transport for %s",
rpc_reg_msg, nettype);
return (-1);
}
return (0);
}
/*
* Create a client handle for a connection.
* Default options are set, which the user can change using clnt_control()'s.
* The rpc/vc package does buffering similar to stdio, so the client
* must pick send and receive buffer sizes, 0 => use the default.
* NB: fd is copied into a private area.
* NB: The rpch->cl_auth is set null authentication. Caller may wish to
* set this something more useful.
*
* fd should be an open socket
*/
CLIENT *
clnt_vc_create(
int fd,
const struct netbuf *raddr,
rpcprog_t prog,
rpcvers_t vers,
u_int sendsz,
u_int recvsz
)
{
CLIENT *h;
struct ct_data *ct = NULL;
struct rpc_msg call_msg;
#ifdef _REENTRANT
sigset_t mask;
#endif
sigset_t newmask;
struct sockaddr_storage ss;
socklen_t slen;
struct __rpc_sockinfo si;
_DIAGASSERT(raddr != NULL);
h = mem_alloc(sizeof(*h));
if (h == NULL) {
warnx("clnt_vc_create: out of memory");
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
goto fooy;
}
ct = mem_alloc(sizeof(*ct));
if (ct == NULL) {
warnx("clnt_vc_create: out of memory");
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
goto fooy;
}
__clnt_sigfillset(&newmask);
thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
#ifdef _REENTRANT
mutex_lock(&clnt_fd_lock);
if (vc_fd_locks == NULL) {
size_t cv_allocsz, fd_allocsz;
int dtbsize = __rpc_dtbsize();
fd_allocsz = dtbsize * sizeof (int);
vc_fd_locks = mem_alloc(fd_allocsz);
if (vc_fd_locks == NULL) {
goto blooy;
} else
memset(vc_fd_locks, '\0', fd_allocsz);
_DIAGASSERT(vc_cv == NULL);
cv_allocsz = dtbsize * sizeof (cond_t);
vc_cv = mem_alloc(cv_allocsz);
if (vc_cv == NULL) {
mem_free(vc_fd_locks, fd_allocsz);
vc_fd_locks = NULL;
goto blooy;
} else {
int i;
for (i = 0; i < dtbsize; i++)
cond_init(&vc_cv[i], 0, (void *) 0);
}
} else
_DIAGASSERT(vc_cv != NULL);
#endif
/*
* XXX - fvdl connecting while holding a mutex?
*/
slen = sizeof ss;
if (getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
if (errno != ENOTCONN) {
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
goto blooy;
}
if (connect(fd, (struct sockaddr *)raddr->buf, raddr->len) < 0){
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
goto blooy;
}
}
mutex_unlock(&clnt_fd_lock);
thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
if (!__rpc_fd2sockinfo(fd, &si))
goto fooy;
ct->ct_closeit = FALSE;
/*
* Set up private data struct
*/
ct->ct_fd = fd;
ct->ct_wait.tv_usec = 0;
ct->ct_waitset = FALSE;
ct->ct_addr.buf = malloc((size_t)raddr->maxlen);
if (ct->ct_addr.buf == NULL)
goto fooy;
memcpy(ct->ct_addr.buf, raddr->buf, (size_t)raddr->len);
ct->ct_addr.len = raddr->len;
ct->ct_addr.maxlen = raddr->maxlen;
/*
* Initialize call message
*/
call_msg.rm_xid = __RPC_GETXID();
call_msg.rm_direction = CALL;
call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
call_msg.rm_call.cb_prog = (u_int32_t)prog;
call_msg.rm_call.cb_vers = (u_int32_t)vers;
/*
* pre-serialize the static part of the call msg and stash it away
*/
xdrmem_create(&(ct->ct_xdrs), ct->ct_u.ct_mcallc, MCALL_MSG_SIZE,
XDR_ENCODE);
if (! xdr_callhdr(&(ct->ct_xdrs), &call_msg)) {
if (ct->ct_closeit) {
(void)close(fd);
}
goto fooy;
}
ct->ct_mpos = XDR_GETPOS(&(ct->ct_xdrs));
XDR_DESTROY(&(ct->ct_xdrs));
/*
* Create a client handle which uses xdrrec for serialization
* and authnone for authentication.
*/
h->cl_ops = clnt_vc_ops();
h->cl_private = ct;
h->cl_auth = authnone_create();
sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz);
recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz);
xdrrec_create(&(ct->ct_xdrs), sendsz, recvsz,
h->cl_private, read_vc, write_vc);
return (h);
blooy:
mutex_unlock(&clnt_fd_lock);
thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
fooy:
/*
* Something goofed, free stuff and barf
*/
if (ct)
mem_free(ct, sizeof(struct ct_data));
if (h)
mem_free(h, sizeof(CLIENT));
return (NULL);
}
/*
* Connection less client creation returns with client handle parameters.
* Default options are set, which the user can change using clnt_control().
* fd should be open and bound.
*
* sendsz and recvsz are the maximum allowable packet sizes that can be
* sent and received. Normally they are the same, but they can be
* changed to improve the program efficiency and buffer allocation.
* If they are 0, use the transport default.
*
* If svcaddr is NULL, returns NULL.
*/
CLIENT *
clnt_dg_ncreate(int fd, /* open file descriptor */
const struct netbuf *svcaddr, /* servers address */
rpcprog_t program, /* program number */
rpcvers_t version, /* version number */
u_int sendsz, /* buffer recv size */
u_int recvsz /* buffer send size */)
{
CLIENT *clnt = NULL; /* client handle */
struct cx_data *cx = NULL; /* private data */
struct cu_data *cu = NULL;
struct timespec now;
struct rpc_msg call_msg;
struct __rpc_sockinfo si;
uint32_t oflags;
int one = 1;
if (svcaddr == NULL) {
rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
return (NULL);
}
if (!__rpc_fd2sockinfo(fd, &si)) {
rpc_createerr.cf_stat = RPC_TLIERROR;
rpc_createerr.cf_error.re_errno = 0;
return (NULL);
}
/*
* Find the receive and the send size
*/
sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz);
recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz);
if ((sendsz == 0) || (recvsz == 0)) {
rpc_createerr.cf_stat = RPC_TLIERROR; /* XXX */
rpc_createerr.cf_error.re_errno = 0;
return (NULL);
}
clnt = mem_alloc(sizeof(CLIENT));
if (clnt == NULL)
goto err1;
mutex_init(&clnt->cl_lock, NULL);
clnt->cl_flags = CLNT_FLAG_NONE;
/*
* Should be multiple of 4 for XDR.
*/
sendsz = ((sendsz + 3) / 4) * 4;
recvsz = ((recvsz + 3) / 4) * 4;
cx = alloc_cx_data(CX_DG_DATA, sendsz, recvsz);
if (cx == NULL)
goto err1;
cu = CU_DATA(cx);
(void)memcpy(&cu->cu_raddr, svcaddr->buf, (size_t) svcaddr->len);
cu->cu_rlen = svcaddr->len;
/* Other values can also be set through clnt_control() */
cu->cu_wait.tv_sec = 15; /* heuristically chosen */
cu->cu_wait.tv_usec = 0;
cu->cu_total.tv_sec = -1;
cu->cu_total.tv_usec = -1;
cu->cu_sendsz = sendsz;
cu->cu_recvsz = recvsz;
cu->cu_async = false;
cu->cu_connect = false;
cu->cu_connected = false;
(void)clock_gettime(CLOCK_MONOTONIC_FAST, &now);
call_msg.rm_xid = __RPC_GETXID(&now); /* XXX? */
call_msg.rm_call.cb_prog = program;
call_msg.rm_call.cb_vers = version;
xdrmem_create(&(cu->cu_outxdrs), cu->cu_outbuf, sendsz, XDR_ENCODE);
if (!xdr_callhdr(&(cu->cu_outxdrs), &call_msg)) {
rpc_createerr.cf_stat = RPC_CANTENCODEARGS; /* XXX */
rpc_createerr.cf_error.re_errno = 0;
goto err2;
}
cu->cu_xdrpos = XDR_GETPOS(&(cu->cu_outxdrs));
/* XXX fvdl - do we still want this? */
#if 0
(void)bindresvport_sa(fd, (struct sockaddr *)svcaddr->buf);
#endif
#ifdef IP_RECVERR
{
int on = 1;
(void) setsockopt(fd, SOL_IP, IP_RECVERR, &on, sizeof(on));
}
#endif
ioctl(fd, FIONBIO, (char *)(void *)&one);
/*
* By default, closeit is always false. It is users responsibility
* to do a close on it, else the user may use clnt_control
* to let clnt_destroy do it for him/her.
*/
cu->cu_closeit = false;
cu->cu_fd = fd;
clnt->cl_ops = clnt_dg_ops();
clnt->cl_p1 = cx;
clnt->cl_p2 = rpc_dplx_lookup_rec(fd, RPC_DPLX_LKP_FLAG_NONE,
&oflags); /* ref+1 */
clnt->cl_tp = NULL;
clnt->cl_netid = NULL;
return (clnt);
err1:
__warnx(TIRPC_DEBUG_FLAG_CLNT_DG, mem_err_clnt_dg);
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
err2:
if (clnt) {
mem_free(clnt, sizeof(CLIENT));
if (cx)
free_cx_data(cx);
}
return (NULL);
}
SVCXPRT *
svc_dg_ncreatef(const int fd, const u_int sendsz, const u_int recvsz,
const uint32_t flags)
{
SVCXPRT *xprt;
struct rpc_dplx_rec *rec;
struct svc_dg_xprt *su;
struct __rpc_sockinfo si;
u_int recvsize;
u_int sendsize;
u_int xp_flags;
int rc;
/* atomically find or create shared fd state; ref+1; locked */
xprt = svc_xprt_lookup(fd, svc_dg_xprt_setup);
if (!xprt) {
__warnx(TIRPC_DEBUG_FLAG_ERROR,
"%s: fd %d svc_xprt_lookup failed",
__func__, fd);
return (NULL);
}
rec = REC_XPRT(xprt);
xp_flags = atomic_postset_uint16_t_bits(&xprt->xp_flags, flags
| SVC_XPRT_FLAG_INITIALIZED);
if ((xp_flags & SVC_XPRT_FLAG_INITIALIZED)) {
rpc_dplx_rui(rec);
XPRT_TRACE(xprt, __func__, __func__, __LINE__);
return (xprt);
}
if (!__rpc_fd2sockinfo(fd, &si)) {
atomic_clear_uint16_t_bits(&xprt->xp_flags,
SVC_XPRT_FLAG_INITIALIZED);
rpc_dplx_rui(rec);
__warnx(TIRPC_DEBUG_FLAG_ERROR,
"%s: fd %d could not get transport information",
__func__, fd);
return (NULL);
}
/*
* Find the receive and the send size
*/
sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz);
recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz);
if ((sendsize == 0) || (recvsize == 0)) {
atomic_clear_uint16_t_bits(&xprt->xp_flags,
SVC_XPRT_FLAG_INITIALIZED);
rpc_dplx_rui(rec);
__warnx(TIRPC_DEBUG_FLAG_ERROR,
"%s: fd %d transport does not support data transfer",
__func__, fd);
return (NULL);
}
__rpc_address_setup(&xprt->xp_local);
rc = getsockname(fd, xprt->xp_local.nb.buf, &xprt->xp_local.nb.len);
if (rc < 0) {
atomic_clear_uint16_t_bits(&xprt->xp_flags,
SVC_XPRT_FLAG_INITIALIZED);
rpc_dplx_rui(rec);
__warnx(TIRPC_DEBUG_FLAG_ERROR,
"%s: fd %d getsockname failed (%d)",
__func__, fd, rc);
return (NULL);
}
/*
* Should be multiple of 4 for XDR.
*/
su = DG_DR(rec);
su->su_dr.sendsz = ((sendsize + 3) / 4) * 4;
su->su_dr.recvsz = ((recvsize + 3) / 4) * 4;
su->su_dr.maxrec = ((MAX(sendsize, recvsize) + 3) / 4) * 4;
/* duplex streams are not used by the rendezvous transport */
xdrmem_create(su->su_dr.ioq.xdrs, NULL, 0, XDR_ENCODE);
svc_dg_rendezvous_ops(xprt);
/* Enable reception of IP*_PKTINFO control msgs */
svc_dg_enable_pktinfo(fd, &si);
/* Conditional register */
if ((!(__svc_params->flags & SVC_FLAG_NOREG_XPRTS)
&& !(flags & SVC_CREATE_FLAG_XPRT_NOREG))
|| (flags & SVC_CREATE_FLAG_XPRT_DOREG))
svc_rqst_evchan_reg(__svc_params->ev_u.evchan.id, xprt,
SVC_RQST_FLAG_LOCKED |
SVC_RQST_FLAG_CHAN_AFFINITY);
/* release */
rpc_dplx_rui(rec);
XPRT_TRACE(xprt, __func__, __func__, __LINE__);
#if defined(HAVE_BLKIN)
__rpc_set_blkin_endpoint(xprt, "svc_dg");
#endif
return (xprt);
}
/*
* For simplified, easy to use kind of rpc interfaces.
* nettype indicates the type of transport on which the service will be
* listening. Used for conservation of the system resource. Only one
* handle is created for all the services (actually one of each netid)
* and same xdrbuf is used for same netid. The size of the arguments
* is also limited by the recvsize for that transport, even if it is
* a COTS transport. This may be wrong, but for cases like these, they
* should not use the simplified interfaces like this.
*
* prognum - program number
* versnum - version number
* procnum - procedure number
* progname - Server routine
* inproc, outproc - in/out XDR procedures
* nettype - nettype
*/
int
rpc_reg(rpcprog_t prognum, rpcvers_t versnum, rpcproc_t procnum,
char *(*progname)(char *), xdrproc_t inproc, xdrproc_t outproc,
char *nettype)
{
struct netconfig *nconf;
int done = FALSE;
void *handle;
if (procnum == NULLPROC) {
warnx("%s can't reassign procedure number %u", rpc_reg_msg,
NULLPROC);
return (-1);
}
if (nettype == NULL)
nettype = "netpath"; /* The default behavior */
if ((handle = __rpc_setconf(nettype)) == NULL) {
warnx(rpc_reg_err, rpc_reg_msg, __reg_err1);
return (-1);
}
/* VARIABLES PROTECTED BY proglst_lock: proglst */
mutex_lock(&proglst_lock);
while ((nconf = __rpc_getconf(handle)) != NULL) {
struct proglst *pl;
SVCXPRT *svcxprt;
int madenow;
u_int recvsz;
char *xdrbuf;
char *netid;
madenow = FALSE;
svcxprt = NULL;
recvsz = 0;
xdrbuf = netid = NULL;
for (pl = proglst; pl; pl = pl->p_nxt) {
if (strcmp(pl->p_netid, nconf->nc_netid) == 0) {
svcxprt = pl->p_transp;
xdrbuf = pl->p_xdrbuf;
recvsz = pl->p_recvsz;
netid = pl->p_netid;
break;
}
}
if (svcxprt == NULL) {
struct __rpc_sockinfo si;
svcxprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
if (svcxprt == NULL)
continue;
if (!__rpc_fd2sockinfo(svcxprt->xp_fd, &si)) {
warnx(rpc_reg_err, rpc_reg_msg, __reg_err2);
SVC_DESTROY(svcxprt);
continue;
}
recvsz = __rpc_get_t_size(si.si_af, si.si_proto, 0);
if (recvsz == 0) {
warnx(rpc_reg_err, rpc_reg_msg, __reg_err3);
SVC_DESTROY(svcxprt);
continue;
}
if (((xdrbuf = malloc((unsigned)recvsz)) == NULL) ||
((netid = strdup(nconf->nc_netid)) == NULL)) {
warnx(rpc_reg_err, rpc_reg_msg, __no_mem_str);
free(xdrbuf);
free(netid);
SVC_DESTROY(svcxprt);
break;
}
madenow = TRUE;
}
/*
* Check if this (program, version, netid) had already been
* registered. The check may save a few RPC calls to rpcbind
*/
for (pl = proglst; pl; pl = pl->p_nxt)
if ((pl->p_prognum == prognum) &&
(pl->p_versnum == versnum) &&
(strcmp(pl->p_netid, netid) == 0))
break;
if (pl == NULL) { /* Not yet */
(void) rpcb_unset(prognum, versnum, nconf);
} else {
/* so that svc_reg does not call rpcb_set() */
nconf = NULL;
}
if (!svc_reg(svcxprt, prognum, versnum, universal, nconf)) {
warnx("%s couldn't register prog %u vers %u for %s",
rpc_reg_msg, (unsigned)prognum,
(unsigned)versnum, netid);
if (madenow) {
SVC_DESTROY(svcxprt);
free(xdrbuf);
free(netid);
}
continue;
}
pl = malloc(sizeof (struct proglst));
if (pl == NULL) {
warnx(rpc_reg_err, rpc_reg_msg, __no_mem_str);
if (madenow) {
SVC_DESTROY(svcxprt);
free(xdrbuf);
free(netid);
}
break;
}
pl->p_progname = progname;
pl->p_prognum = prognum;
pl->p_versnum = versnum;
pl->p_procnum = procnum;
pl->p_inproc = inproc;
pl->p_outproc = outproc;
pl->p_transp = svcxprt;
pl->p_xdrbuf = xdrbuf;
pl->p_recvsz = recvsz;
pl->p_netid = netid;
pl->p_nxt = proglst;
proglst = pl;
done = TRUE;
}
__rpc_endconf(handle);
mutex_unlock(&proglst_lock);
if (done == FALSE) {
warnx("%s can't find suitable transport for %s",
rpc_reg_msg, nettype);
return (-1);
}
return (0);
}
/*
* rpc_broadcast_exp()
*
* prog - program number
* vers - version number
* proc - procedure number
* xargs - xdr routine for args
* argsp - pointer to args
* xresults - xdr routine for results
* resultsp - pointer to results
* eachresult - call with each result obtained
* inittime - how long to wait initially
* waittime - maximum time to wait
* nettype - transport type
*/
enum clnt_stat
rpc_broadcast_exp(rpcprog_t prog, rpcvers_t vers, rpcproc_t proc,
xdrproc_t xargs, caddr_t argsp, xdrproc_t xresults, caddr_t resultsp,
resultproc_t eachresult, int inittime, int waittime,
const char *nettype)
{
enum clnt_stat stat = RPC_SUCCESS; /* Return status */
XDR xdr_stream; /* XDR stream */
XDR *xdrs = &xdr_stream;
struct rpc_msg msg; /* RPC message */
struct timeval t;
char *outbuf = NULL; /* Broadcast msg buffer */
char *inbuf = NULL; /* Reply buf */
int inlen;
u_int maxbufsize = 0;
AUTH *sys_auth = authunix_create_default();
u_int i;
void *handle;
char uaddress[1024]; /* A self imposed limit */
char *uaddrp = uaddress;
int pmap_reply_flag; /* reply recvd from PORTMAP */
/* An array of all the suitable broadcast transports */
struct {
int fd; /* File descriptor */
int af;
int proto;
struct netconfig *nconf; /* Netconfig structure */
u_int asize; /* Size of the addr buf */
u_int dsize; /* Size of the data buf */
struct sockaddr_storage raddr; /* Remote address */
broadlist_t nal;
} fdlist[MAXBCAST];
struct pollfd pfd[MAXBCAST];
size_t fdlistno = 0;
struct r_rpcb_rmtcallargs barg; /* Remote arguments */
struct r_rpcb_rmtcallres bres; /* Remote results */
size_t outlen;
struct netconfig *nconf;
int msec;
int pollretval;
int fds_found;
#ifdef PORTMAP
size_t outlen_pmap = 0;
u_long port; /* Remote port number */
int pmap_flag = 0; /* UDP exists ? */
char *outbuf_pmap = NULL;
struct rmtcallargs barg_pmap; /* Remote arguments */
struct rmtcallres bres_pmap; /* Remote results */
u_int udpbufsz = 0;
#endif /* PORTMAP */
if (sys_auth == NULL) {
return (RPC_SYSTEMERROR);
}
/*
* initialization: create a fd, a broadcast address, and send the
* request on the broadcast transport.
* Listen on all of them and on replies, call the user supplied
* function.
*/
if (nettype == NULL)
nettype = "datagram_n";
if ((handle = __rpc_setconf(nettype)) == NULL) {
AUTH_DESTROY(sys_auth);
return (RPC_UNKNOWNPROTO);
}
while ((nconf = __rpc_getconf(handle)) != NULL) {
int fd;
struct __rpc_sockinfo si;
if (nconf->nc_semantics != NC_TPI_CLTS)
continue;
if (fdlistno >= MAXBCAST)
break; /* No more slots available */
if (!__rpc_nconf2sockinfo(nconf, &si))
continue;
TAILQ_INIT(&fdlist[fdlistno].nal);
if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype,
&fdlist[fdlistno].nal) == 0)
continue;
fd = _socket(si.si_af, si.si_socktype, si.si_proto);
if (fd < 0) {
stat = RPC_CANTSEND;
continue;
}
fdlist[fdlistno].af = si.si_af;
fdlist[fdlistno].proto = si.si_proto;
fdlist[fdlistno].fd = fd;
fdlist[fdlistno].nconf = nconf;
fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af);
pfd[fdlistno].events = POLLIN | POLLPRI |
POLLRDNORM | POLLRDBAND;
pfd[fdlistno].fd = fdlist[fdlistno].fd = fd;
fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto,
0);
if (maxbufsize <= fdlist[fdlistno].dsize)
maxbufsize = fdlist[fdlistno].dsize;
#ifdef PORTMAP
if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) {
udpbufsz = fdlist[fdlistno].dsize;
if ((outbuf_pmap = malloc(udpbufsz)) == NULL) {
_close(fd);
stat = RPC_SYSTEMERROR;
goto done_broad;
}
pmap_flag = 1;
}
#endif /* PORTMAP */
fdlistno++;
}
if (fdlistno == 0) {
if (stat == RPC_SUCCESS)
stat = RPC_UNKNOWNPROTO;
goto done_broad;
}
if (maxbufsize == 0) {
if (stat == RPC_SUCCESS)
stat = RPC_CANTSEND;
goto done_broad;
}
inbuf = malloc(maxbufsize);
outbuf = malloc(maxbufsize);
if ((inbuf == NULL) || (outbuf == NULL)) {
stat = RPC_SYSTEMERROR;
goto done_broad;
}
/* Serialize all the arguments which have to be sent */
(void) gettimeofday(&t, NULL);
msg.rm_xid = __RPC_GETXID(&t);
msg.rm_direction = CALL;
msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
msg.rm_call.cb_prog = RPCBPROG;
msg.rm_call.cb_vers = RPCBVERS;
msg.rm_call.cb_proc = RPCBPROC_CALLIT;
barg.prog = prog;
barg.vers = vers;
barg.proc = proc;
barg.args.args_val = argsp;
barg.xdr_args = xargs;
bres.addr = uaddrp;
bres.results.results_val = resultsp;
bres.xdr_res = xresults;
msg.rm_call.cb_cred = sys_auth->ah_cred;
msg.rm_call.cb_verf = sys_auth->ah_verf;
xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE);
if ((!xdr_callmsg(xdrs, &msg)) ||
(!xdr_rpcb_rmtcallargs(xdrs,
(struct rpcb_rmtcallargs *)(void *)&barg))) {
stat = RPC_CANTENCODEARGS;
goto done_broad;
}
outlen = xdr_getpos(xdrs);
xdr_destroy(xdrs);
#ifdef PORTMAP
/* Prepare the packet for version 2 PORTMAP */
if (pmap_flag) {
msg.rm_xid++; /* One way to distinguish */
msg.rm_call.cb_prog = PMAPPROG;
msg.rm_call.cb_vers = PMAPVERS;
msg.rm_call.cb_proc = PMAPPROC_CALLIT;
barg_pmap.prog = prog;
barg_pmap.vers = vers;
barg_pmap.proc = proc;
barg_pmap.args_ptr = argsp;
barg_pmap.xdr_args = xargs;
bres_pmap.port_ptr = &port;
bres_pmap.xdr_results = xresults;
bres_pmap.results_ptr = resultsp;
xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE);
if ((! xdr_callmsg(xdrs, &msg)) ||
(! xdr_rmtcall_args(xdrs, &barg_pmap))) {
stat = RPC_CANTENCODEARGS;
goto done_broad;
}
outlen_pmap = xdr_getpos(xdrs);
xdr_destroy(xdrs);
}
#endif /* PORTMAP */
/*
* Basic loop: broadcast the packets to transports which
* support data packets of size such that one can encode
* all the arguments.
* Wait a while for response(s).
* The response timeout grows larger per iteration.
*/
for (msec = inittime; msec <= waittime; msec += msec) {
struct broadif *bip;
/* Broadcast all the packets now */
for (i = 0; i < fdlistno; i++) {
if (fdlist[i].dsize < outlen) {
stat = RPC_CANTSEND;
continue;
}
for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL;
bip = TAILQ_NEXT(bip, link)) {
void *addr;
addr = &bip->broadaddr;
__rpc_broadenable(fdlist[i].af, fdlist[i].fd,
bip);
/*
* Only use version 3 if lowvers is not set
*/
if (!__rpc_lowvers)
if (_sendto(fdlist[i].fd, outbuf,
outlen, 0, (struct sockaddr*)addr,
(size_t)fdlist[i].asize) !=
outlen) {
#ifdef RPC_DEBUG
perror("sendto");
#endif
warnx("clnt_bcast: cannot send "
"broadcast packet");
stat = RPC_CANTSEND;
continue;
}
#ifdef RPC_DEBUG
if (!__rpc_lowvers)
fprintf(stderr, "Broadcast packet sent "
"for %s\n",
fdlist[i].nconf->nc_netid);
#endif
#ifdef PORTMAP
/*
* Send the version 2 packet also
* for UDP/IP
*/
if (pmap_flag &&
fdlist[i].proto == IPPROTO_UDP) {
if (_sendto(fdlist[i].fd, outbuf_pmap,
outlen_pmap, 0, addr,
(size_t)fdlist[i].asize) !=
outlen_pmap) {
warnx("clnt_bcast: "
"Cannot send broadcast packet");
stat = RPC_CANTSEND;
continue;
}
}
#ifdef RPC_DEBUG
fprintf(stderr, "PMAP Broadcast packet "
"sent for %s\n",
fdlist[i].nconf->nc_netid);
#endif
#endif /* PORTMAP */
}
/* End for sending all packets on this transport */
} /* End for sending on all transports */
if (eachresult == NULL) {
stat = RPC_SUCCESS;
goto done_broad;
}
/*
* Get all the replies from these broadcast requests
*/
recv_again:
switch (pollretval = _poll(pfd, fdlistno, msec)) {
case 0: /* timed out */
stat = RPC_TIMEDOUT;
continue;
case -1: /* some kind of error - we ignore it */
goto recv_again;
} /* end of poll results switch */
for (i = fds_found = 0;
i < fdlistno && fds_found < pollretval; i++) {
bool_t done = FALSE;
if (pfd[i].revents == 0)
continue;
else if (pfd[i].revents & POLLNVAL) {
/*
* Something bad has happened to this descri-
* ptor. We can cause _poll() to ignore
* it simply by using a negative fd. We do that
* rather than compacting the pfd[] and fdlist[]
* arrays.
*/
pfd[i].fd = -1;
fds_found++;
continue;
} else
fds_found++;
#ifdef RPC_DEBUG
fprintf(stderr, "response for %s\n",
fdlist[i].nconf->nc_netid);
#endif
try_again:
inlen = _recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize,
0, (struct sockaddr *)(void *)&fdlist[i].raddr,
&fdlist[i].asize);
if (inlen < 0) {
if (errno == EINTR)
goto try_again;
warnx("clnt_bcast: Cannot receive reply to "
"broadcast");
stat = RPC_CANTRECV;
continue;
}
if (inlen < sizeof (u_int32_t))
continue; /* Drop that and go ahead */
/*
* see if reply transaction id matches sent id.
* If so, decode the results. If return id is xid + 1
* it was a PORTMAP reply
*/
if (*((u_int32_t *)(void *)(inbuf)) ==
*((u_int32_t *)(void *)(outbuf))) {
pmap_reply_flag = 0;
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where =
(caddr_t)(void *)&bres;
msg.acpted_rply.ar_results.proc =
(xdrproc_t)xdr_rpcb_rmtcallres;
#ifdef PORTMAP
} else if (pmap_flag &&
*((u_int32_t *)(void *)(inbuf)) ==
*((u_int32_t *)(void *)(outbuf_pmap))) {
pmap_reply_flag = 1;
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where =
(caddr_t)(void *)&bres_pmap;
msg.acpted_rply.ar_results.proc =
(xdrproc_t)xdr_rmtcallres;
#endif /* PORTMAP */
} else
continue;
xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
if (xdr_replymsg(xdrs, &msg)) {
if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(msg.acpted_rply.ar_stat == SUCCESS)) {
struct netbuf taddr, *np;
struct sockaddr_in *sin;
#ifdef PORTMAP
if (pmap_flag && pmap_reply_flag) {
sin = (struct sockaddr_in *)
(void *)&fdlist[i].raddr;
sin->sin_port =
htons((u_short)port);
taddr.len = taddr.maxlen =
fdlist[i].raddr.ss_len;
taddr.buf = &fdlist[i].raddr;
done = (*eachresult)(resultsp,
&taddr, fdlist[i].nconf);
} else {
#endif /* PORTMAP */
#ifdef RPC_DEBUG
fprintf(stderr, "uaddr %s\n",
uaddrp);
#endif
np = uaddr2taddr(
fdlist[i].nconf, uaddrp);
done = (*eachresult)(resultsp,
np, fdlist[i].nconf);
free(np);
#ifdef PORTMAP
}
#endif /* PORTMAP */
}
/* otherwise, we just ignore the errors ... */
}
/* else some kind of deserialization problem ... */
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;
}
} /* The recv for loop */
} /* The giant for loop */
done_broad:
free(inbuf);
free(outbuf);
#ifdef PORTMAP
free(outbuf_pmap);
#endif /* PORTMAP */
for (i = 0; i < fdlistno; i++) {
(void)_close(fdlist[i].fd);
__rpc_freebroadifs(&fdlist[i].nal);
}
AUTH_DESTROY(sys_auth);
(void) __rpc_endconf(handle);
return (stat);
}
SVCXPRT *
svc_dg_create(int fd, u_int sendsize, u_int recvsize)
{
SVCXPRT *xprt;
struct svc_dg_data *su = NULL;
struct __rpc_sockinfo si;
struct sockaddr_storage ss;
socklen_t slen;
if (!__rpc_fd2sockinfo(fd, &si)) {
warnx(svc_dg_str, svc_dg_err1);
return (NULL);
}
/*
* Find the receive and the send size
*/
sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize);
recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize);
if ((sendsize == 0) || (recvsize == 0)) {
warnx(svc_dg_str, svc_dg_err2);
return (NULL);
}
xprt = mem_alloc(sizeof (SVCXPRT));
if (xprt == NULL)
goto freedata;
memset(xprt, 0, sizeof (SVCXPRT));
su = mem_alloc(sizeof (*su));
if (su == NULL)
goto freedata;
su->su_iosz = ((MAX(sendsize, recvsize) + 3) / 4) * 4;
if ((rpc_buffer(xprt) = malloc(su->su_iosz)) == NULL)
goto freedata;
_DIAGASSERT(__type_fit(u_int, su->su_iosz));
xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), (u_int)su->su_iosz,
XDR_DECODE);
su->su_cache = NULL;
xprt->xp_fd = fd;
xprt->xp_p2 = (caddr_t)(void *)su;
xprt->xp_verf.oa_base = su->su_verfbody;
svc_dg_ops(xprt);
xprt->xp_rtaddr.maxlen = sizeof (struct sockaddr_storage);
slen = sizeof ss;
if (getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0)
goto freedata;
xprt->xp_ltaddr.buf = mem_alloc(sizeof (struct sockaddr_storage));
xprt->xp_ltaddr.maxlen = sizeof (struct sockaddr_storage);
xprt->xp_ltaddr.len = slen;
memcpy(xprt->xp_ltaddr.buf, &ss, slen);
xprt_register(xprt);
return (xprt);
freedata:
(void) warnx(svc_dg_str, __no_mem_str);
if (xprt) {
if (su)
(void) mem_free(su, sizeof (*su));
(void) mem_free(xprt, sizeof (SVCXPRT));
}
return (NULL);
}
