diff options
Diffstat (limited to 'REORG.TODO/sunrpc/pmap_rmt.c')
| -rw-r--r-- | REORG.TODO/sunrpc/pmap_rmt.c | 393 |
1 files changed, 393 insertions, 0 deletions
diff --git a/REORG.TODO/sunrpc/pmap_rmt.c b/REORG.TODO/sunrpc/pmap_rmt.c new file mode 100644 index 0000000000..c036d889ef --- /dev/null +++ b/REORG.TODO/sunrpc/pmap_rmt.c @@ -0,0 +1,393 @@ +/* + * pmap_rmt.c + * Client interface to pmap rpc service. + * remote call and broadcast service + * + * Copyright (c) 2010, Oracle America, Inc. + * + * 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. + */ + +#include <unistd.h> +#include <string.h> +#include <libintl.h> +#include <rpc/rpc.h> +#include <rpc/pmap_prot.h> +#include <rpc/pmap_clnt.h> +#include <rpc/pmap_rmt.h> +#include <sys/poll.h> +#include <sys/socket.h> +#include <stdio.h> +#include <errno.h> +#include <sys/param.h> +#include <net/if.h> +#include <ifaddrs.h> +#include <sys/ioctl.h> +#include <arpa/inet.h> +#include <shlib-compat.h> + +#define MAX_BROADCAST_SIZE 1400 + +extern u_long _create_xid (void); + +static const struct timeval timeout = {3, 0}; + +/* + * 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, u_long prog, u_long vers, u_long proc, + xdrproc_t xdrargs, caddr_t argsp, xdrproc_t xdrres, caddr_t resp, + struct timeval tout, u_long *port_ptr) +{ + int socket = -1; + CLIENT *client; + struct rmtcallargs a; + struct rmtcallres r; + enum clnt_stat stat; + + addr->sin_port = htons (PMAPPORT); + client = clntudp_create (addr, PMAPPROG, PMAPVERS, timeout, &socket); + 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, + (xdrproc_t)xdr_rmtcall_args, + (caddr_t)&a, (xdrproc_t)xdr_rmtcallres, + (caddr_t)&r, tout); + CLNT_DESTROY (client); + } + else + { + stat = RPC_FAILED; + } + /* (void)__close(socket); CLNT_DESTROY already closed it */ + addr->sin_port = 0; + return stat; +} +libc_hidden_nolink_sunrpc (pmap_rmtcall, GLIBC_2_0) + + +/* + * XDR remote call arguments + * written for XDR_ENCODE direction only + */ +bool_t +xdr_rmtcall_args (XDR *xdrs, struct rmtcallargs *cap) +{ + u_int lenposition, argposition, position; + + if (xdr_u_long (xdrs, &(cap->prog)) && + xdr_u_long (xdrs, &(cap->vers)) && + xdr_u_long (xdrs, &(cap->proc))) + { + u_long dummy_arglen = 0; + lenposition = XDR_GETPOS (xdrs); + if (!xdr_u_long (xdrs, &dummy_arglen)) + return FALSE; + argposition = XDR_GETPOS (xdrs); + if (!(*(cap->xdr_args)) (xdrs, cap->args_ptr)) + return FALSE; + position = XDR_GETPOS (xdrs); + cap->arglen = (u_long) position - (u_long) argposition; + XDR_SETPOS (xdrs, lenposition); + if (!xdr_u_long (xdrs, &(cap->arglen))) + return FALSE; + XDR_SETPOS (xdrs, position); + return TRUE; + } + return FALSE; +} +libc_hidden_nolink_sunrpc (xdr_rmtcall_args, GLIBC_2_0) + +/* + * XDR remote call results + * written for XDR_DECODE direction only + */ +bool_t +xdr_rmtcallres (XDR *xdrs, struct rmtcallres *crp) +{ + caddr_t port_ptr; + + port_ptr = (caddr_t) crp->port_ptr; + if (xdr_reference (xdrs, &port_ptr, sizeof (u_long), + (xdrproc_t) xdr_u_long) + && xdr_u_long (xdrs, &crp->resultslen)) + { + crp->port_ptr = (u_long *) port_ptr; + return (*(crp->xdr_results)) (xdrs, crp->results_ptr); + } + return FALSE; +} +libc_hidden_nolink_sunrpc (xdr_rmtcallres, GLIBC_2_0) + + +/* + * 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 . + */ + +static int +internal_function +getbroadcastnets (struct in_addr *addrs, int naddrs) +{ + struct ifaddrs *ifa; + + if (getifaddrs (&ifa) != 0) + { + perror ("broadcast: getifaddrs"); + return 0; + } + + int i = 0; + struct ifaddrs *run = ifa; + while (run != NULL && i < naddrs) + { + if ((run->ifa_flags & IFF_BROADCAST) != 0 + && (run->ifa_flags & IFF_UP) != 0 + && run->ifa_addr != NULL + && run->ifa_addr->sa_family == AF_INET) + /* Copy the broadcast address. */ + addrs[i++] = ((struct sockaddr_in *) run->ifa_broadaddr)->sin_addr; + + run = run->ifa_next; + } + + freeifaddrs (ifa); + + return i; +} + + +enum clnt_stat +clnt_broadcast (/* program number */ + u_long prog, + /* version number */ + u_long vers, + /* procedure number */ + u_long proc, + /* xdr routine for args */ + xdrproc_t xargs, + /* pointer to args */ + caddr_t argsp, + /* xdr routine for results */ + xdrproc_t xresults, + /* pointer to results */ + caddr_t resultsp, + /* call with each result obtained */ + resultproc_t eachresult) +{ + enum clnt_stat stat = RPC_FAILED; + AUTH *unix_auth = authunix_create_default (); + XDR xdr_stream; + XDR *xdrs = &xdr_stream; + struct timeval t; + int outlen, inlen, nets; + socklen_t fromlen; + int sock; + int on = 1; + struct pollfd fd; + int milliseconds; + int i; + bool_t done = FALSE; + u_long xid; + u_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; + 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 */ + fd.fd = sock; + fd.events = POLLIN; + nets = getbroadcastnets (addrs, sizeof (addrs) / sizeof (addrs[0])); + __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); */ + msg.rm_xid = xid = _create_xid (); + 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 = _null_auth; + msg.acpted_rply.ar_results.where = (caddr_t) & r; + msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_rmtcallres; + milliseconds = t.tv_sec * 1000 + t.tv_usec / 1000; + switch (__poll(&fd, 1, milliseconds)) + { + + case 0: /* timed out */ + stat = RPC_TIMEDOUT; + continue; + + case -1: /* some kind of error */ + if (errno == EINTR) + goto recv_again; + perror (_("Broadcast poll problem")); + stat = RPC_CANTRECV; + goto done_broad; + + } /* end of poll 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 (u_long)) + 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 (((u_int32_t) msg.rm_xid == (u_int32_t) 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 ((u_int32_t) msg.rm_xid == (u_int32_t) xid) + 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; +} +libc_hidden_nolink_sunrpc (clnt_broadcast, GLIBC_2_0) |