| /* @(#)pmap_rmt.c 2.2 88/08/01 4.0 RPCSRC */ |
| /* |
| * Sun RPC is a product of Sun Microsystems, Inc. and is provided for |
| * unrestricted use provided that this legend is included on all tape |
| * media and as a part of the software program in whole or part. Users |
| * may copy or modify Sun RPC without charge, but are not authorized |
| * to license or distribute it to anyone else except as part of a product or |
| * program developed by the user. |
| * |
| * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE |
| * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. |
| * |
| * Sun RPC is provided with no support and without any obligation on the |
| * part of Sun Microsystems, Inc. to assist in its use, correction, |
| * modification or enhancement. |
| * |
| * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE |
| * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC |
| * OR ANY PART THEREOF. |
| * |
| * In no event will Sun Microsystems, Inc. be liable for any lost revenue |
| * or profits or other special, indirect and consequential damages, even if |
| * Sun has been advised of the possibility of such damages. |
| * |
| * Sun Microsystems, Inc. |
| * 2550 Garcia Avenue |
| * Mountain View, California 94043 |
| */ |
| #if 0 |
| 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 |
| * |
| * Copyright (C) 1984, Sun Microsystems, Inc. |
| */ |
| |
| #define __FORCE_GLIBC |
| #include <features.h> |
| |
| #include <unistd.h> |
| #include <string.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> |
| #undef _POSIX_SOURCE /* Ultrix <sys/param.h> needs --roland@gnu */ |
| #include <sys/param.h> /* Ultrix needs before net/if --roland@gnu */ |
| #include <net/if.h> |
| #include <sys/ioctl.h> |
| #include <arpa/inet.h> |
| #define MAX_BROADCAST_SIZE 1400 |
| |
| #if defined(ANDROID) && !defined(BIONIC_L) |
| static struct in_addr inet_makeaddr(in_addr_t net, in_addr_t host) |
| { |
| struct in_addr a; |
| |
| if (net <= 0x000000ff) |
| a.s_addr = (net << 24) | (host & 0x000000ff); |
| else if (net <= 0x0000ffff) |
| a.s_addr = (net << 16) | (host & 0x0000ffff); |
| else if (net <= 0x00ffffff) |
| a.s_addr = (net << 8) | (host & 0x00ffffff); |
| else |
| a.s_addr = net | host; |
| a.s_addr = htonl(a.s_addr); |
| return a; |
| } |
| static in_addr_t inet_netof(struct in_addr in) |
| { |
| in_addr_t i = ntohl(in.s_addr); |
| |
| if (i < 0x80000000) |
| return i >> 24; |
| if (i < 0xc0000000) |
| return i >> 16; |
| return i >> 8; |
| } |
| |
| #endif |
| |
| |
| extern u_long _create_xid (void) attribute_hidden; |
| |
| 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; |
| } |
| |
| |
| /* |
| * 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_def(xdr_rmtcall_args) |
| |
| /* |
| * 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_def(xdr_rmtcallres) |
| |
| |
| /* |
| * 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 sock, char *buf) |
| /* int sock: any valid socket will do */ |
| /* char *buf: why allocate more when we can use existing... */ |
| { |
| struct ifconf ifc; |
| struct ifreq ifreq, *ifr; |
| struct sockaddr_in *sin; |
| int n, i; |
| |
| ifc.ifc_len = UDPMSGSIZE; |
| ifc.ifc_buf = buf; |
| 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) |
| { |
| sin = (struct sockaddr_in *) &ifr->ifr_addr; |
| #ifdef SIOCGIFBRDADDR /* 4.3BSD */ |
| if (ioctl (sock, SIOCGIFBRDADDR, (char *) &ifreq) < 0) |
| { |
| addrs[i++] = inet_makeaddr (inet_netof |
| /* Changed to pass struct instead of s_addr member |
| by roland@gnu. */ |
| (sin->sin_addr), INADDR_ANY); |
| } |
| else |
| { |
| addrs[i++] = ((struct sockaddr_in *) |
| &ifreq.ifr_addr)->sin_addr; |
| } |
| #else /* 4.2 BSD */ |
| addrs[i++] = inet_makeaddr (inet_netof |
| (sin->sin_addr.s_addr), INADDR_ANY); |
| #endif |
| } |
| } |
| return i; |
| } |
| |
| |
| 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 = 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, sock, inbuf); |
| memset ((char *) &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); */ |
| 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; |
| } |