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-rw-r--r--src/lib/rpc/pmap_rmt.c414
1 files changed, 414 insertions, 0 deletions
diff --git a/src/lib/rpc/pmap_rmt.c b/src/lib/rpc/pmap_rmt.c
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+++ b/src/lib/rpc/pmap_rmt.c
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+/* @(#)pmap_rmt.c 2.2 88/08/01 4.0 RPCSRC */
+/*
+ * Copyright (c) 2010, Oracle America, Inc.
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * * Neither the name of the "Oracle America, Inc." nor the names of
+ * its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro";
+#endif
+
+/*
+ * pmap_rmt.c
+ * Client interface to pmap rpc service.
+ * remote call and broadcast service
+ */
+
+#include "k5-platform.h"
+#include <unistd.h>
+#include <gssrpc/rpc.h>
+#include <gssrpc/pmap_prot.h>
+#include <gssrpc/pmap_clnt.h>
+#include <gssrpc/pmap_rmt.h>
+#include <sys/socket.h>
+#ifdef sun
+#include <sys/sockio.h>
+#endif
+#ifdef OSF1
+#include <net/route.h>
+#include <sys/mbuf.h>
+#endif
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <arpa/inet.h>
+#define MAX_BROADCAST_SIZE 1400
+#include <port-sockets.h>
+
+static struct timeval timeout = { 3, 0 };
+
+#ifndef GETSOCKNAME_ARG3_TYPE
+#define GETSOCKNAME_ARG3_TYPE int
+#endif
+
+/*
+ * pmapper remote-call-service interface.
+ * This routine is used to call the pmapper remote call service
+ * which will look up a service program in the port maps, and then
+ * remotely call that routine with the given parameters. This allows
+ * programs to do a lookup and call in one step.
+*/
+enum clnt_stat
+pmap_rmtcall(
+ struct sockaddr_in *addr,
+ rpcprog_t prog,
+ rpcvers_t vers,
+ rpcproc_t proc,
+ xdrproc_t xdrargs,
+ caddr_t argsp,
+ xdrproc_t xdrres,
+ caddr_t resp,
+ struct timeval tout,
+ rpcport_t *port_ptr)
+{
+ SOCKET sock = INVALID_SOCKET;
+ register CLIENT *client;
+ struct rmtcallargs a;
+ struct rmtcallres r;
+ enum clnt_stat stat;
+
+ addr->sin_port = htons(PMAPPORT);
+ client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock);
+ if (client != (CLIENT *)NULL) {
+ a.prog = prog;
+ a.vers = vers;
+ a.proc = proc;
+ a.args_ptr = argsp;
+ a.xdr_args = xdrargs;
+ r.port_ptr = port_ptr;
+ r.results_ptr = resp;
+ r.xdr_results = xdrres;
+ stat = CLNT_CALL(client, PMAPPROC_CALLIT, xdr_rmtcall_args, &a,
+ xdr_rmtcallres, &r, tout);
+ CLNT_DESTROY(client);
+ } else {
+ stat = RPC_FAILED;
+ }
+ (void)closesocket(sock);
+ addr->sin_port = 0;
+ return (stat);
+}
+
+
+/*
+ * XDR remote call arguments
+ * written for XDR_ENCODE direction only
+ */
+bool_t
+xdr_rmtcall_args(
+ register XDR *xdrs,
+ register struct rmtcallargs *cap)
+{
+ u_int lenposition, argposition, position;
+
+ if (xdr_u_int32(xdrs, &(cap->prog)) &&
+ xdr_u_int32(xdrs, &(cap->vers)) &&
+ xdr_u_int32(xdrs, &(cap->proc))) {
+ lenposition = XDR_GETPOS(xdrs);
+ if (! xdr_u_int32(xdrs, &(cap->arglen)))
+ return (FALSE);
+ argposition = XDR_GETPOS(xdrs);
+ if (! (*(cap->xdr_args))(xdrs, cap->args_ptr))
+ return (FALSE);
+ position = XDR_GETPOS(xdrs);
+ cap->arglen = (uint32_t)position - (uint32_t)argposition;
+ XDR_SETPOS(xdrs, lenposition);
+ if (! xdr_u_int32(xdrs, &(cap->arglen)))
+ return (FALSE);
+ XDR_SETPOS(xdrs, position);
+ return (TRUE);
+ }
+ return (FALSE);
+}
+
+/*
+ * XDR remote call results
+ * written for XDR_DECODE direction only
+ */
+bool_t
+xdr_rmtcallres(
+ register XDR *xdrs,
+ register struct rmtcallres *crp)
+{
+ caddr_t port_ptr;
+
+ port_ptr = (caddr_t)(void *)crp->port_ptr;
+ if (xdr_reference(xdrs, &port_ptr, sizeof (uint32_t),
+ xdr_u_int32) && xdr_u_int32(xdrs, &crp->resultslen)) {
+ crp->port_ptr = (uint32_t *)(void *)port_ptr;
+ return ((*(crp->xdr_results))(xdrs, crp->results_ptr));
+ }
+ return (FALSE);
+}
+
+
+/*
+ * The following is kludged-up support for simple rpc broadcasts.
+ * Someday a large, complicated system will replace these trivial
+ * routines which only support udp/ip .
+ */
+
+#define GIFCONF_BUFSIZE (256 * sizeof (struct ifconf))
+
+static int
+getbroadcastnets(
+ struct in_addr *addrs,
+ int sock, /* any valid socket will do */
+ char *buf /* why allocxate more when we can use existing... */
+ )
+{
+ struct ifconf ifc;
+ struct ifreq ifreq, *ifr;
+ int n, i;
+
+ ifc.ifc_len = GIFCONF_BUFSIZE;
+ ifc.ifc_buf = buf;
+ memset (buf, 0, GIFCONF_BUFSIZE);
+ if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) {
+ perror("broadcast: ioctl (get interface configuration)");
+ return (0);
+ }
+ ifr = ifc.ifc_req;
+ for (i = 0, n = ifc.ifc_len/sizeof (struct ifreq); n > 0; n--, ifr++) {
+ ifreq = *ifr;
+ if (ioctl(sock, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
+ perror("broadcast: ioctl (get interface flags)");
+ continue;
+ }
+ if ((ifreq.ifr_flags & IFF_BROADCAST) &&
+ (ifreq.ifr_flags & IFF_UP) &&
+ ifr->ifr_addr.sa_family == AF_INET) {
+#ifdef SIOCGIFBRDADDR /* 4.3BSD */
+ if (ioctl(sock, SIOCGIFBRDADDR, (char *)&ifreq) < 0) {
+ addrs[i++].s_addr = INADDR_ANY;
+ } else {
+ addrs[i++] = ((struct sockaddr_in*)
+ &ifreq.ifr_addr)->sin_addr;
+ }
+#else /* 4.2 BSD */
+ struct sockaddr_in *sockin;
+ sockin = (struct sockaddr_in *)&ifr->ifr_addr;
+ addrs[i++] = inet_makeaddr(inet_netof
+ (sockin->sin_addr.s_addr), INADDR_ANY);
+#endif
+ }
+ }
+ return (i);
+}
+
+enum clnt_stat
+clnt_broadcast(
+ rpcprog_t prog, /* program number */
+ rpcvers_t vers, /* version number */
+ rpcproc_t 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 = authunix_create_default();
+ XDR xdr_stream;
+ register XDR *xdrs = &xdr_stream;
+ int outlen, nets;
+ ssize_t inlen;
+ GETSOCKNAME_ARG3_TYPE fromlen;
+ SOCKET 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 uint32_t xid;
+ rpcport_t 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, t2;
+ char outbuf[MAX_BROADCAST_SIZE];
+#ifndef MAX
+#define MAX(A,B) ((A)<(B)?(B):(A))
+#endif
+ char inbuf[MAX (UDPMSGSIZE, GIFCONF_BUFSIZE)];
+
+ /*
+ * 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;
+ }
+ set_cloexec_fd(sock);
+#ifdef SO_BROADCAST
+ if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char *) &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);
+ memset(&baddr, 0, 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, (struct timezone *)0);
+ 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)) != 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 = gssrpc__null_auth;
+ msg.acpted_rply.ar_results.where = (caddr_t)&r;
+ msg.acpted_rply.ar_results.proc = xdr_rmtcallres;
+ readfds = mask;
+ t2 = t;
+ switch (select(gssrpc__rpc_dtablesize(), &readfds, (fd_set *)NULL,
+ (fd_set *)NULL, &t2)) {
+
+ 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 */
+ 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;
+ perror("Cannot receive reply to broadcast");
+ stat = RPC_CANTRECV;
+ goto done_broad;
+ }
+ if ((size_t)inlen < sizeof(uint32_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 ... */
+ } else {
+#ifdef notdef
+ /* some kind of deserialization problem ... */
+ if (msg.rm_xid == xid)
+ fprintf(stderr, "Broadcast deserialization problem");
+ /* otherwise, just random garbage */
+#endif
+ }
+ 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:
+ (void)closesocket(sock);
+ AUTH_DESTROY(unix_auth);
+ return (stat);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-01 19:03:07 +0000