diff options
Diffstat (limited to 'libc/inet/rpc/clnt_udp.c')
| -rw-r--r-- | libc/inet/rpc/clnt_udp.c | 600 |
1 files changed, 0 insertions, 600 deletions
diff --git a/libc/inet/rpc/clnt_udp.c b/libc/inet/rpc/clnt_udp.c deleted file mode 100644 index b2dbbba07..000000000 --- a/libc/inet/rpc/clnt_udp.c +++ /dev/null @@ -1,600 +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 0 -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 <unistd.h> -#include "rpc_private.h" -#include <rpc/xdr.h> -#include <rpc/clnt.h> -#include <sys/poll.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <netdb.h> -#include <errno.h> -#include <rpc/pmap_clnt.h> -#include <net/if.h> - -#ifdef IP_RECVERR -#include "errqueue.h" -#include <sys/uio.h> -#endif - -/* - * UDP bases client side rpc operations - */ -static enum clnt_stat clntudp_call (CLIENT *, u_long, xdrproc_t, caddr_t, - xdrproc_t, caddr_t, struct timeval); -static void clntudp_abort (void); -static void clntudp_geterr (CLIENT *, struct rpc_err *); -static bool_t clntudp_freeres (CLIENT *, xdrproc_t, caddr_t); -static bool_t clntudp_control (CLIENT *, int, char *); -static void clntudp_destroy (CLIENT *); - -static const 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; retransmission 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 (struct sockaddr_in *raddr, u_long program, u_long version, - struct timeval _wait, int *sockp, u_int sendsz, - u_int recvsz) -{ - CLIENT *cl; - struct cu_data *cu = NULL; - struct rpc_msg call_msg; - - cl = (CLIENT *) mem_alloc (sizeof (CLIENT)); - sendsz = ((sendsz + 3) / 4) * 4; - recvsz = ((recvsz + 3) / 4) * 4; - cu = (struct cu_data *) mem_alloc (sizeof (*cu) + sendsz + recvsz); - if (cl == NULL || cu == NULL) - { - struct rpc_createerr *ce = &get_rpc_createerr (); - (void) fputs ("clntudp_create: out of memory\n", stderr); - ce->cf_stat = RPC_SYSTEMERROR; - ce->cf_error.re_errno = ENOMEM; - goto fooy; - } - cu->cu_outbuf = &cu->cu_inbuf[recvsz]; - - 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 = _create_xid (); - 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) - { - struct rpc_createerr *ce = &get_rpc_createerr (); - ce->cf_stat = RPC_SYSTEMERROR; - ce->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); -#ifdef IP_RECVERR - { - int on = 1; - setsockopt(*sockp, SOL_IP, IP_RECVERR, &on, sizeof(on)); - } -#endif - 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; -} -libc_hidden_def(clntudp_bufcreate) - -CLIENT * -clntudp_create (struct sockaddr_in *raddr, u_long program, u_long version, struct timeval _wait, int *sockp) -{ - - return clntudp_bufcreate (raddr, program, version, _wait, sockp, - UDPMSGSIZE, UDPMSGSIZE); -} -libc_hidden_def(clntudp_create) - -static int -is_network_up (int sock) -{ - struct ifconf ifc; - char buf[UDPMSGSIZE]; - struct ifreq ifreq, *ifr; - int n; - - ifc.ifc_len = sizeof (buf); - ifc.ifc_buf = buf; - if (ioctl(sock, SIOCGIFCONF, (char *) &ifc) == 0) - { - ifr = ifc.ifc_req; - for (n = ifc.ifc_len / sizeof (struct ifreq); n > 0; n--, ifr++) - { - ifreq = *ifr; - if (ioctl (sock, SIOCGIFFLAGS, (char *) &ifreq) < 0) - break; - - if ((ifreq.ifr_flags & IFF_UP) - && ifr->ifr_addr.sa_family == AF_INET) - return 1; - } - } - return 0; -} - -static enum clnt_stat -clntudp_call ( - 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 */) -{ - struct cu_data *cu = (struct cu_data *) cl->cl_private; - XDR *xdrs; - int outlen = 0; - int inlen; - socklen_t fromlen; - struct pollfd fd; - int milliseconds = (cu->cu_wait.tv_sec * 1000) + - (cu->cu_wait.tv_usec / 1000); - 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; - int anyup; /* any network interface up */ - - 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); - if (xargs == NULL) - goto get_reply; - xdrs->x_op = XDR_ENCODE; - XDR_SETPOS (xdrs, cu->cu_xdrpos); - /* - * the transaction is the first thing in the out buffer - */ - (*(uint32_t *) (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); - } - get_reply: - /* - * 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; - fd.fd = cu->cu_sock; - fd.events = POLLIN; - anyup = 0; - for (;;) - { - switch (poll (&fd, 1, milliseconds)) - { - - case 0: - if (anyup == 0) - { - anyup = is_network_up (cu->cu_sock); - if (!anyup) - return (cu->cu_error.re_status = RPC_CANTRECV); - } - - 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); - } -#ifdef IP_RECVERR - if (fd.revents & POLLERR) - { - struct msghdr msg; - struct cmsghdr *cmsg; - struct sock_extended_err *e; - struct sockaddr_in err_addr; - struct iovec iov; - char *cbuf = malloc (outlen + 256); - int ret; - - if (cbuf == NULL) - { - cu->cu_error.re_errno = errno; - return (cu->cu_error.re_status = RPC_CANTRECV); - } - - iov.iov_base = cbuf + 256; - iov.iov_len = outlen; - msg.msg_name = (void *) &err_addr; - msg.msg_namelen = sizeof (err_addr); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_flags = 0; - msg.msg_control = cbuf; - msg.msg_controllen = 256; - ret = recvmsg (cu->cu_sock, &msg, MSG_ERRQUEUE); - if (ret >= 0 - && memcmp (cbuf + 256, cu->cu_outbuf, ret) == 0 - && (msg.msg_flags & MSG_ERRQUEUE) - && ((msg.msg_namelen == 0 - && ret >= 12) - || (msg.msg_namelen == sizeof (err_addr) - && err_addr.sin_family == AF_INET - && memcmp (&err_addr.sin_addr, &cu->cu_raddr.sin_addr, - sizeof (err_addr.sin_addr)) == 0 - && err_addr.sin_port == cu->cu_raddr.sin_port))) - for (cmsg = CMSG_FIRSTHDR (&msg); cmsg; - cmsg = CMSG_NXTHDR (&msg, cmsg)) - if (cmsg->cmsg_level == SOL_IP && cmsg->cmsg_type == IP_RECVERR) - { - free (cbuf); - e = (struct sock_extended_err *) CMSG_DATA(cmsg); - cu->cu_error.re_errno = e->ee_errno; - return (cu->cu_error.re_status = RPC_CANTRECV); - } - free (cbuf); - } -#endif - 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 < 4) - continue; - - /* see if reply transaction id matches sent id. - Don't do this if we only wait for a replay */ - if (xargs != NULL - && (*((u_int32_t *) (cu->cu_inbuf)) - != *((u_int32_t *) (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 (CLIENT *cl, struct rpc_err *errp) -{ - struct cu_data *cu = (struct cu_data *) cl->cl_private; - - *errp = cu->cu_error; -} - - -static bool_t -clntudp_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr) -{ - struct cu_data *cu = (struct cu_data *) cl->cl_private; - XDR *xdrs = &(cu->cu_outxdrs); - - xdrs->x_op = XDR_FREE; - return (*xdr_res) (xdrs, res_ptr); -} - -static void -clntudp_abort (void) -{ -} - -static bool_t -clntudp_control (CLIENT *cl, int request, char *info) -{ - struct cu_data *cu = (struct cu_data *) cl->cl_private; - - switch (request) - { - case CLSET_FD_CLOSE: - cu->cu_closeit = TRUE; - break; - case CLSET_FD_NCLOSE: - cu->cu_closeit = FALSE; - break; - 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; - case CLGET_FD: - *(int *)info = cu->cu_sock; - break; - case CLGET_XID: - /* - * use the knowledge that xid is the - * first element in the call structure *. - * This will get the xid of the PREVIOUS call - */ - *(u_long *)info = ntohl(*(u_long *)cu->cu_outbuf); - break; - case CLSET_XID: - /* This will set the xid of the NEXT call */ - *(u_long *)cu->cu_outbuf = htonl(*(u_long *)info - 1); - /* decrement by 1 as clntudp_call() increments once */ - break; - case CLGET_VERS: - /* - * This RELIES on the information that, in the call body, - * the version number field is the fifth field from the - * begining of the RPC header. MUST be changed if the - * call_struct is changed - */ - *(u_long *)info = ntohl(*(u_long *)(cu->cu_outbuf + - 4 * BYTES_PER_XDR_UNIT)); - break; - case CLSET_VERS: - *(u_long *)(cu->cu_outbuf + 4 * BYTES_PER_XDR_UNIT) - = htonl(*(u_long *)info); - break; - case CLGET_PROG: - /* - * This RELIES on the information that, in the call body, - * the program number field is the field from the - * begining of the RPC header. MUST be changed if the - * call_struct is changed - */ - *(u_long *)info = ntohl(*(u_long *)(cu->cu_outbuf + - 3 * BYTES_PER_XDR_UNIT)); - break; - case CLSET_PROG: - *(u_long *)(cu->cu_outbuf + 3 * BYTES_PER_XDR_UNIT) - = htonl(*(u_long *)info); - break; - /* The following are only possible with TI-RPC */ - case CLGET_SVC_ADDR: - case CLSET_SVC_ADDR: - case CLSET_PUSH_TIMOD: - case CLSET_POP_TIMOD: - default: - return FALSE; - } - return TRUE; -} - -static void -clntudp_destroy (CLIENT *cl) -{ - 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)); -} |