/*
* Create the client des authentication object. Obsoleted by
* authdes_seccreate().
*/
AUTH *
authdes_create(char *servername, uint_t window, struct sockaddr_in *syncaddr,
des_block *ckey)
{
char *hostname = NULL;
if (syncaddr) {
/*
* Change addr to hostname, because that is the way
* new interface takes it.
*/
struct netconfig *nconf;
struct netbuf nb_syncaddr;
struct nd_hostservlist *hlist;
AUTH *nauth;
int fd;
struct t_info tinfo;
if ((nconf = __rpc_getconfip("udp")) == NULL &&
(nconf = __rpc_getconfip("tcp")) == NULL)
goto fallback;
/* Transform sockaddr_in to netbuf */
if ((fd = t_open(nconf->nc_device, O_RDWR, &tinfo)) == -1) {
(void) freenetconfigent(nconf);
goto fallback;
}
(void) t_close(fd);
nb_syncaddr.maxlen = nb_syncaddr.len =
__rpc_get_a_size(tinfo.addr);
nb_syncaddr.buf = (char *)syncaddr;
if (netdir_getbyaddr(nconf, &hlist, &nb_syncaddr)) {
(void) freenetconfigent(nconf);
goto fallback;
}
if (hlist && hlist->h_cnt > 0 && hlist->h_hostservs)
hostname = hlist->h_hostservs->h_host;
nauth = authdes_seccreate(servername, window, hostname, ckey);
(void) netdir_free((char *)hlist, ND_HOSTSERVLIST);
(void) freenetconfigent(nconf);
return (nauth);
}
fallback:
return (authdes_seccreate(servername, window, hostname, ckey));
}
/*
* A common clnt create routine
*/
static CLIENT *
clnt_com_create(struct sockaddr_in *raddr, rpcprog_t prog, rpcvers_t vers,
int *sockp, uint_t sendsz, uint_t recvsz, char *tp)
{
CLIENT *cl;
int madefd = FALSE;
int fd = *sockp;
struct t_info tinfo;
struct netconfig *nconf;
int port;
struct netbuf bindaddr;
bool_t locked = TRUE;
(void) mutex_lock(&rpcsoc_lock);
if ((nconf = __rpc_getconfip(tp)) == NULL) {
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
(void) mutex_unlock(&rpcsoc_lock);
return (NULL);
}
if (fd == RPC_ANYSOCK) {
fd = t_open(nconf->nc_device, O_RDWR, &tinfo);
if (fd == -1)
goto syserror;
RPC_RAISEFD(fd);
madefd = TRUE;
} else {
if (t_getinfo(fd, &tinfo) == -1)
goto syserror;
}
if (raddr->sin_port == 0) {
uint_t proto;
ushort_t sport;
/* pmap_getport is recursive */
(void) mutex_unlock(&rpcsoc_lock);
proto = strcmp(tp, "udp") == 0 ? IPPROTO_UDP : IPPROTO_TCP;
sport = pmap_getport(raddr, prog, vers, proto);
if (sport == 0) {
locked = FALSE;
goto err;
}
raddr->sin_port = htons(sport);
/* pmap_getport is recursive */
(void) mutex_lock(&rpcsoc_lock);
}
/* Transform sockaddr_in to netbuf */
bindaddr.maxlen = bindaddr.len = __rpc_get_a_size(tinfo.addr);
bindaddr.buf = (char *)raddr;
(void) __rpc_bindresvport(fd, NULL, &port, 0);
cl = clnt_tli_create(fd, nconf, &bindaddr, prog, vers,
sendsz, recvsz);
if (cl) {
if (madefd == TRUE) {
/*
* The fd should be closed while destroying the handle.
*/
(void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, NULL);
*sockp = fd;
}
(void) freenetconfigent(nconf);
(void) mutex_unlock(&rpcsoc_lock);
return (cl);
}
goto err;
syserror:
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = errno;
rpc_createerr.cf_error.re_terrno = t_errno;
err: if (madefd == TRUE)
(void) t_close(fd);
(void) freenetconfigent(nconf);
if (locked == TRUE)
(void) mutex_unlock(&rpcsoc_lock);
return (NULL);
}
/*
* Bind a fd to a privileged IP port.
* This is slightly different from the code in netdir_options
* because it has a different interface - main thing is that it
* needs to know its own address. We also wanted to set the qlen.
* t_getname() can be used for those purposes and perhaps job can be done.
*/
int
__rpc_bindresvport_ipv6(int fd, struct sockaddr *sin, int *portp, int qlen,
char *fmly)
{
int res;
static in_port_t port, *sinport;
struct sockaddr_in6 myaddr;
int i;
struct t_bind tbindstr, *tres;
struct t_info tinfo;
extern mutex_t portnum_lock;
/* VARIABLES PROTECTED BY portnum_lock: port */
#define STARTPORT 600
#define ENDPORT (IPPORT_RESERVED - 1)
#define NPORTS (ENDPORT - STARTPORT + 1)
if (sin == 0 && fmly == 0) {
errno = EINVAL;
return (-1);
}
if (geteuid()) {
errno = EACCES;
return (-1);
}
if ((i = t_getstate(fd)) != T_UNBND) {
if (t_errno == TBADF)
errno = EBADF;
if (i != -1)
errno = EISCONN;
return (-1);
}
if (sin == 0) {
sin = (struct sockaddr *)&myaddr;
get_myaddress_ipv6(fmly, sin);
}
if (sin->sa_family == AF_INET) {
/* LINTED pointer cast */
sinport = &((struct sockaddr_in *)sin)->sin_port;
} else if (sin->sa_family == AF_INET6) {
/* LINTED pointer cast */
sinport = &((struct sockaddr_in6 *)sin)->sin6_port;
} else {
errno = EPFNOSUPPORT;
return (-1);
}
/* Transform sockaddr to netbuf */
if (t_getinfo(fd, &tinfo) == -1) {
return (-1);
}
/* LINTED pointer cast */
tres = (struct t_bind *)t_alloc(fd, T_BIND, T_ADDR);
if (tres == NULL)
return (-1);
tbindstr.qlen = qlen;
tbindstr.addr.buf = (char *)sin;
tbindstr.addr.len = tbindstr.addr.maxlen = __rpc_get_a_size(tinfo.addr);
/* LINTED pointer cast */
sin = (struct sockaddr *)tbindstr.addr.buf;
res = -1;
(void) mutex_lock(&portnum_lock);
if (port == 0)
port = (getpid() % NPORTS) + STARTPORT;
for (i = 0; i < NPORTS; i++) {
*sinport = htons(port++);
if (port > ENDPORT)
port = STARTPORT;
res = t_bind(fd, &tbindstr, tres);
if (res == 0) {
if ((tbindstr.addr.len == tres->addr.len) &&
(memcmp(tbindstr.addr.buf, tres->addr.buf,
(int)tres->addr.len) == 0))
break;
(void) t_unbind(fd);
res = -1;
} else if (t_errno != TSYSERR || errno != EADDRINUSE)
break;
}
(void) mutex_unlock(&portnum_lock);
if ((portp != NULL) && (res == 0))
*portp = *sinport;
(void) t_free((char *)tres, T_BIND);
return (res);
}
/*
* 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);
}
