diff options
Diffstat (limited to 'mdk-stage1/dietlibc/librpc/clnt_udp.c')
| -rw-r--r-- | mdk-stage1/dietlibc/librpc/clnt_udp.c | 437 |
1 files changed, 0 insertions, 437 deletions
diff --git a/mdk-stage1/dietlibc/librpc/clnt_udp.c b/mdk-stage1/dietlibc/librpc/clnt_udp.c deleted file mode 100644 index 7305d3ff1..000000000 --- a/mdk-stage1/dietlibc/librpc/clnt_udp.c +++ /dev/null @@ -1,437 +0,0 @@ -/* @(#)clnt_udp.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 !defined(lint) && defined(SCCSIDS) -static char sccsid[] = "@(#)clnt_udp.c 1.39 87/08/11 Copyr 1984 Sun Micro"; -#endif - -/* - * clnt_udp.c, Implements a UDP/IP based, client side RPC. - * - * Copyright (C) 1984, Sun Microsystems, Inc. - */ - -#include <stdio.h> -#include <rpc/rpc.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <netdb.h> -#include <errno.h> -#include <rpc/pmap_clnt.h> -#include <unistd.h> - -extern int errno; - -/* - * UDP bases client side rpc operations - */ -static enum clnt_stat clntudp_call(); -static void clntudp_abort(); -static void clntudp_geterr(); -static bool_t clntudp_freeres(); -static bool_t clntudp_control(); -static void clntudp_destroy(); - -static struct clnt_ops udp_ops = { - clntudp_call, - clntudp_abort, - clntudp_geterr, - clntudp_freeres, - clntudp_destroy, - clntudp_control -}; - -/* - * Private data kept per client handle - */ -struct cu_data { - int cu_sock; - bool_t cu_closeit; - struct sockaddr_in cu_raddr; - int cu_rlen; - struct timeval cu_wait; - struct timeval cu_total; - struct rpc_err cu_error; - XDR cu_outxdrs; - u_int cu_xdrpos; - u_int cu_sendsz; - char *cu_outbuf; - u_int cu_recvsz; - char cu_inbuf[1]; -}; - -/* - * Create a UDP based client handle. - * If *sockp<0, *sockp is set to a newly created UPD socket. - * If raddr->sin_port is 0 a binder on the remote machine - * is consulted for the correct port number. - * NB: It is the clients responsibility to close *sockp. - * NB: The rpch->cl_auth is initialized to null authentication. - * Caller may wish to set this something more useful. - * - * wait is the amount of time used between retransmitting a call if - * no response has been heard; retransmition occurs until the actual - * rpc call times out. - * - * sendsz and recvsz are the maximum allowable packet sizes that can be - * sent and received. - */ -CLIENT *clntudp_bufcreate(raddr, program, version, wait, sockp, sendsz, - recvsz) -struct sockaddr_in *raddr; -u_long program; -u_long version; -struct timeval wait; -register int *sockp; -u_int sendsz; -u_int recvsz; -{ - CLIENT *cl; - register struct cu_data *cu; - struct timeval now; - struct rpc_msg call_msg; - - cl = (CLIENT *) mem_alloc(sizeof(CLIENT)); - if (cl == NULL) { - (void) fprintf(stderr, "clntudp_create: out of memory\n"); - rpc_createerr.cf_stat = RPC_SYSTEMERROR; - rpc_createerr.cf_error.re_errno = errno; - goto fooy; - } - sendsz = ((sendsz + 3) / 4) * 4; - recvsz = ((recvsz + 3) / 4) * 4; - cu = (struct cu_data *) mem_alloc(sizeof(*cu) + sendsz + recvsz); - if (cu == NULL) { - (void) fprintf(stderr, "clntudp_create: out of memory\n"); - rpc_createerr.cf_stat = RPC_SYSTEMERROR; - rpc_createerr.cf_error.re_errno = errno; - goto fooy; - } - cu->cu_outbuf = &cu->cu_inbuf[recvsz]; - - (void) gettimeofday(&now, (struct timezone *) 0); - if (raddr->sin_port == 0) { - u_short port; - - if ((port = - pmap_getport(raddr, program, version, IPPROTO_UDP)) == 0) { - goto fooy; - } - raddr->sin_port = htons(port); - } - cl->cl_ops = &udp_ops; - cl->cl_private = (caddr_t) cu; - cu->cu_raddr = *raddr; - cu->cu_rlen = sizeof(cu->cu_raddr); - cu->cu_wait = wait; - cu->cu_total.tv_sec = -1; - cu->cu_total.tv_usec = -1; - cu->cu_sendsz = sendsz; - cu->cu_recvsz = recvsz; - call_msg.rm_xid = getpid() ^ now.tv_sec ^ now.tv_usec; - call_msg.rm_direction = CALL; - call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; - 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)) { - goto fooy; - } - cu->cu_xdrpos = XDR_GETPOS(&(cu->cu_outxdrs)); - if (*sockp < 0) { - int dontblock = 1; - - *sockp = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); - if (*sockp < 0) { - rpc_createerr.cf_stat = RPC_SYSTEMERROR; - rpc_createerr.cf_error.re_errno = errno; - goto fooy; - } - /* attempt to bind to prov port */ - (void) bindresvport(*sockp, (struct sockaddr_in *) 0); - /* the sockets rpc controls are non-blocking */ - (void) ioctl(*sockp, FIONBIO, (char *) &dontblock); - cu->cu_closeit = TRUE; - } else { - cu->cu_closeit = FALSE; - } - cu->cu_sock = *sockp; - cl->cl_auth = authnone_create(); - return (cl); - fooy: - if (cu) - mem_free((caddr_t) cu, sizeof(*cu) + sendsz + recvsz); - if (cl) - mem_free((caddr_t) cl, sizeof(CLIENT)); - return ((CLIENT *) NULL); -} - -CLIENT *clntudp_create(raddr, program, version, wait, sockp) -struct sockaddr_in *raddr; -u_long program; -u_long version; -struct timeval wait; -register int *sockp; -{ - - return (clntudp_bufcreate(raddr, program, version, wait, sockp, - UDPMSGSIZE, UDPMSGSIZE)); -} - -static enum clnt_stat -clntudp_call(cl, proc, xargs, argsp, xresults, resultsp, utimeout) -register CLIENT *cl; /* client handle */ -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 */ -struct timeval utimeout; /* seconds to wait before giving up */ -{ - register struct cu_data *cu = (struct cu_data *) cl->cl_private; - register XDR *xdrs; - register int outlen; - register int inlen; - int fromlen; - -#ifdef FD_SETSIZE - fd_set readfds; - fd_set mask; -#else - int readfds; - register int mask; -#endif /* def FD_SETSIZE */ - struct sockaddr_in from; - struct rpc_msg reply_msg; - XDR reply_xdrs; - struct timeval time_waited; - bool_t ok; - int nrefreshes = 2; /* number of times to refresh cred */ - struct timeval timeout; - - if (cu->cu_total.tv_usec == -1) { - timeout = utimeout; /* use supplied timeout */ - } else { - timeout = cu->cu_total; /* use default timeout */ - } - - time_waited.tv_sec = 0; - time_waited.tv_usec = 0; - call_again: - xdrs = &(cu->cu_outxdrs); - xdrs->x_op = XDR_ENCODE; - XDR_SETPOS(xdrs, cu->cu_xdrpos); - /* - * the transaction is the first thing in the out buffer - */ - (*(u_short *) (cu->cu_outbuf))++; - if ((!XDR_PUTLONG(xdrs, (long *) &proc)) || - (!AUTH_MARSHALL(cl->cl_auth, xdrs)) || (!(*xargs) (xdrs, argsp))) - return (cu->cu_error.re_status = RPC_CANTENCODEARGS); - outlen = (int) XDR_GETPOS(xdrs); - - send_again: - if (sendto(cu->cu_sock, cu->cu_outbuf, outlen, 0, - (struct sockaddr *) &(cu->cu_raddr), cu->cu_rlen) - != outlen) { - cu->cu_error.re_errno = errno; - return (cu->cu_error.re_status = RPC_CANTSEND); - } - - /* - * Hack to provide rpc-based message passing - */ - if (timeout.tv_sec == 0 && timeout.tv_usec == 0) { - return (cu->cu_error.re_status = RPC_TIMEDOUT); - } - /* - * sub-optimal code appears here because we have - * some clock time to spare while the packets are in flight. - * (We assume that this is actually only executed once.) - */ - reply_msg.acpted_rply.ar_verf = _null_auth; - reply_msg.acpted_rply.ar_results.where = resultsp; - reply_msg.acpted_rply.ar_results.proc = xresults; -#ifdef FD_SETSIZE - FD_ZERO(&mask); - FD_SET(cu->cu_sock, &mask); -#else - mask = 1 << cu->cu_sock; -#endif /* def FD_SETSIZE */ - for (;;) { - readfds = mask; - switch (select(_rpc_dtablesize(), &readfds, 0, 0, &(cu->cu_wait))) { - - case 0: - time_waited.tv_sec += cu->cu_wait.tv_sec; - time_waited.tv_usec += cu->cu_wait.tv_usec; - while (time_waited.tv_usec >= 1000000) { - time_waited.tv_sec++; - time_waited.tv_usec -= 1000000; - } - if ((time_waited.tv_sec < timeout.tv_sec) || - ((time_waited.tv_sec == timeout.tv_sec) && - (time_waited.tv_usec < timeout.tv_usec))) - goto send_again; - return (cu->cu_error.re_status = RPC_TIMEDOUT); - - /* - * buggy in other cases because time_waited is not being - * updated. - */ - case -1: - if (errno == EINTR) - continue; - cu->cu_error.re_errno = errno; - return (cu->cu_error.re_status = RPC_CANTRECV); - } - do { - fromlen = sizeof(struct sockaddr); - - inlen = recvfrom(cu->cu_sock, cu->cu_inbuf, - (int) cu->cu_recvsz, 0, - (struct sockaddr *) &from, &fromlen); - } while (inlen < 0 && errno == EINTR); - if (inlen < 0) { - if (errno == EWOULDBLOCK) - continue; - cu->cu_error.re_errno = errno; - return (cu->cu_error.re_status = RPC_CANTRECV); - } - if (inlen < sizeof(u_long)) - continue; - /* see if reply transaction id matches sent id */ - if (*((u_long *) (cu->cu_inbuf)) != *((u_long *) (cu->cu_outbuf))) - continue; - /* we now assume we have the proper reply */ - break; - } - - /* - * now decode and validate the response - */ - xdrmem_create(&reply_xdrs, cu->cu_inbuf, (u_int) inlen, XDR_DECODE); - ok = xdr_replymsg(&reply_xdrs, &reply_msg); - /* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */ - if (ok) { - _seterr_reply(&reply_msg, &(cu->cu_error)); - if (cu->cu_error.re_status == RPC_SUCCESS) { - if (!AUTH_VALIDATE(cl->cl_auth, - &reply_msg.acpted_rply.ar_verf)) { - cu->cu_error.re_status = RPC_AUTHERROR; - cu->cu_error.re_why = AUTH_INVALIDRESP; - } - if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) { - xdrs->x_op = XDR_FREE; - (void) xdr_opaque_auth(xdrs, - &(reply_msg.acpted_rply.ar_verf)); - } - } /* end successful completion */ - else { - /* maybe our credentials need to be refreshed ... */ - if (nrefreshes > 0 && AUTH_REFRESH(cl->cl_auth)) { - nrefreshes--; - goto call_again; - } - } /* end of unsuccessful completion */ - } /* end of valid reply message */ - else { - cu->cu_error.re_status = RPC_CANTDECODERES; - } - return (cu->cu_error.re_status); -} - -static void clntudp_geterr(cl, errp) -CLIENT *cl; -struct rpc_err *errp; -{ - register struct cu_data *cu = (struct cu_data *) cl->cl_private; - - *errp = cu->cu_error; -} - - -static bool_t clntudp_freeres(cl, xdr_res, res_ptr) -CLIENT *cl; -xdrproc_t xdr_res; -caddr_t res_ptr; -{ - register struct cu_data *cu = (struct cu_data *) cl->cl_private; - register XDR *xdrs = &(cu->cu_outxdrs); - - xdrs->x_op = XDR_FREE; - return ((*xdr_res) (xdrs, res_ptr)); -} - -static void clntudp_abort( /*h */ ) - /*CLIENT *h; */ -{ -} - -static bool_t clntudp_control(cl, request, info) -CLIENT *cl; -int request; -char *info; -{ - register struct cu_data *cu = (struct cu_data *) cl->cl_private; - - switch (request) { - case CLSET_TIMEOUT: - cu->cu_total = *(struct timeval *) info; - break; - case CLGET_TIMEOUT: - *(struct timeval *) info = cu->cu_total; - break; - case CLSET_RETRY_TIMEOUT: - cu->cu_wait = *(struct timeval *) info; - break; - case CLGET_RETRY_TIMEOUT: - *(struct timeval *) info = cu->cu_wait; - break; - case CLGET_SERVER_ADDR: - *(struct sockaddr_in *) info = cu->cu_raddr; - break; - default: - return (FALSE); - } - return (TRUE); -} - -static void clntudp_destroy(cl) -CLIENT *cl; -{ - register struct cu_data *cu = (struct cu_data *) cl->cl_private; - - if (cu->cu_closeit) { - (void) close(cu->cu_sock); - } - XDR_DESTROY(&(cu->cu_outxdrs)); - mem_free((caddr_t) cu, (sizeof(*cu) + cu->cu_sendsz + cu->cu_recvsz)); - mem_free((caddr_t) cl, sizeof(CLIENT)); -} |