lib/libc/rpc/rpc_soc.c
C | 457 lines | 335 code | 50 blank | 72 comment | 44 complexity | c578bbeed26f4f5d740c5867b2d4ec2c MD5 | raw file
Possible License(s): MIT, WTFPL, AGPL-1.0, BSD-3-Clause, GPL-3.0, LGPL-2.0, JSON, 0BSD
- /* $NetBSD: rpc_soc.c,v 1.13 2010/12/08 02:06:38 joerg Exp $ */
- /*
- * 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
- */
- /* #ident "@(#)rpc_soc.c 1.17 94/04/24 SMI" */
- /*
- * Copyright (c) 1986-1991 by Sun Microsystems Inc.
- * In addition, portions of such source code were derived from Berkeley
- * 4.3 BSD under license from the Regents of the University of
- * California.
- */
- #include <sys/cdefs.h>
- #if defined(LIBC_SCCS) && !defined(lint)
- #if 0
- static char sccsid[] = "@(#)rpc_soc.c 1.41 89/05/02 Copyr 1988 Sun Micro";
- #else
- __RCSID("$NetBSD: rpc_soc.c,v 1.13 2010/12/08 02:06:38 joerg Exp $");
- #endif
- #endif
- #ifdef PORTMAP
- /*
- * rpc_soc.c
- *
- * The backward compatibility routines for the earlier implementation
- * of RPC, where the only transports supported were tcp/ip and udp/ip.
- * Based on berkeley socket abstraction, now implemented on the top
- * of TLI/Streams
- */
- #include "namespace.h"
- #include "reentrant.h"
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <stdio.h>
- #include <rpc/rpc.h>
- #include <rpc/pmap_clnt.h>
- #include <rpc/pmap_prot.h>
- #include <rpc/nettype.h>
- #include <netinet/in.h>
- #include <assert.h>
- #include <errno.h>
- #include <netdb.h>
- #include <stdlib.h>
- #include <string.h>
- #include <syslog.h>
- #include <unistd.h>
- #include "rpc_internal.h"
- #ifdef __weak_alias
- __weak_alias(clntudp_bufcreate,_clntudp_bufcreate)
- __weak_alias(clntudp_create,_clntudp_create)
- __weak_alias(clnttcp_create,_clnttcp_create)
- __weak_alias(clntraw_create,_clntraw_create)
- __weak_alias(get_myaddress,_get_myaddress)
- __weak_alias(svcfd_create,_svcfd_create)
- __weak_alias(svcudp_bufcreate,_svcudp_bufcreate)
- __weak_alias(svcudp_create,_svcudp_create)
- __weak_alias(svctcp_create,_svctcp_create)
- __weak_alias(svcraw_create,_svcraw_create)
- __weak_alias(callrpc,_callrpc)
- __weak_alias(registerrpc,_registerrpc)
- __weak_alias(clnt_broadcast,_clnt_broadcast)
- #endif
- #ifdef _REENTRANT
- extern mutex_t rpcsoc_lock;
- #endif
- static CLIENT *clnt_com_create __P((struct sockaddr_in *, rpcprog_t, rpcvers_t,
- int *, u_int, u_int, const char *));
- static SVCXPRT *svc_com_create __P((int, u_int, u_int, const char *));
- static bool_t rpc_wrap_bcast __P((char *, struct netbuf *, struct netconfig *));
- /*
- * A common clnt create routine
- */
- static CLIENT *
- clnt_com_create(raddr, prog, vers, sockp, sendsz, recvsz, tp)
- struct sockaddr_in *raddr;
- rpcprog_t prog;
- rpcvers_t vers;
- int *sockp;
- u_int sendsz;
- u_int recvsz;
- const char *tp;
- {
- CLIENT *cl;
- int madefd = FALSE;
- int fd;
- struct netconfig *nconf;
- struct netbuf bindaddr;
- _DIAGASSERT(raddr != NULL);
- _DIAGASSERT(sockp != NULL);
- _DIAGASSERT(tp != NULL);
- fd = *sockp;
- mutex_lock(&rpcsoc_lock);
- if ((nconf = __rpc_getconfip(tp)) == NULL) {
- rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
- mutex_unlock(&rpcsoc_lock);
- return (NULL);
- }
- if (fd == RPC_ANYSOCK) {
- fd = __rpc_nconf2fd(nconf);
- if (fd == -1)
- goto syserror;
- madefd = TRUE;
- }
- if (raddr->sin_port == 0) {
- u_int proto;
- u_short sport;
- mutex_unlock(&rpcsoc_lock); /* pmap_getport is recursive */
- proto = strcmp(tp, "udp") == 0 ? IPPROTO_UDP : IPPROTO_TCP;
- sport = pmap_getport(raddr, (u_long)prog, (u_long)vers,
- proto);
- if (sport == 0) {
- goto err;
- }
- raddr->sin_port = htons(sport);
- mutex_lock(&rpcsoc_lock); /* pmap_getport is recursive */
- }
- /* Transform sockaddr_in to netbuf */
- bindaddr.maxlen = bindaddr.len = sizeof (struct sockaddr_in);
- bindaddr.buf = raddr;
- bindresvport(fd, NULL);
- cl = clnt_tli_create(fd, nconf, &bindaddr, prog, vers,
- sendsz, recvsz);
- if (cl) {
- if (madefd == TRUE) {
- /*
- * The fd should be closed while destroying the handle.
- */
- (void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, NULL);
- *sockp = fd;
- }
- (void) freenetconfigent(nconf);
- mutex_unlock(&rpcsoc_lock);
- return (cl);
- }
- goto err;
- syserror:
- rpc_createerr.cf_stat = RPC_SYSTEMERROR;
- rpc_createerr.cf_error.re_errno = errno;
- err: if (madefd == TRUE)
- (void) close(fd);
- (void) freenetconfigent(nconf);
- mutex_unlock(&rpcsoc_lock);
- return (NULL);
- }
- CLIENT *
- clntudp_bufcreate(raddr, prog, vers, wait, sockp, sendsz, recvsz)
- struct sockaddr_in *raddr;
- u_long prog;
- u_long vers;
- struct timeval wait;
- int *sockp;
- u_int sendsz;
- u_int recvsz;
- {
- CLIENT *cl;
- _DIAGASSERT(raddr != NULL);
- _DIAGASSERT(sockp != NULL);
- cl = clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp,
- sendsz, recvsz, "udp");
- if (cl == NULL) {
- return (NULL);
- }
- (void) CLNT_CONTROL(cl, CLSET_RETRY_TIMEOUT, (char *)(void *)&wait);
- return (cl);
- }
- CLIENT *
- clntudp_create(raddr, program, version, wait, sockp)
- 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);
- }
- CLIENT *
- clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz)
- struct sockaddr_in *raddr;
- u_long prog;
- u_long vers;
- int *sockp;
- u_int sendsz;
- u_int recvsz;
- {
- return clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp,
- sendsz, recvsz, "tcp");
- }
- CLIENT *
- clntraw_create(prog, vers)
- u_long prog;
- u_long vers;
- {
- return clnt_raw_create((rpcprog_t)prog, (rpcvers_t)vers);
- }
- /*
- * A common server create routine
- */
- static SVCXPRT *
- svc_com_create(fd, sendsize, recvsize, netid)
- int fd;
- u_int sendsize;
- u_int recvsize;
- const char *netid;
- {
- struct netconfig *nconf;
- SVCXPRT *svc;
- int madefd = FALSE;
- int port;
- struct sockaddr_in sccsin;
- _DIAGASSERT(netid != NULL);
- if ((nconf = __rpc_getconfip(netid)) == NULL) {
- (void) syslog(LOG_ERR, "Could not get %s transport", netid);
- return (NULL);
- }
- if (fd == RPC_ANYSOCK) {
- fd = __rpc_nconf2fd(nconf);
- if (fd == -1) {
- (void) freenetconfigent(nconf);
- (void) syslog(LOG_ERR,
- "svc%s_create: could not open connection", netid);
- return (NULL);
- }
- madefd = TRUE;
- }
- memset(&sccsin, 0, sizeof sccsin);
- sccsin.sin_family = AF_INET;
- bindresvport(fd, &sccsin);
- listen(fd, SOMAXCONN);
- svc = svc_tli_create(fd, nconf, NULL, sendsize, recvsize);
- (void) freenetconfigent(nconf);
- if (svc == NULL) {
- if (madefd)
- (void) close(fd);
- return (NULL);
- }
- port = (((struct sockaddr_in *)svc->xp_ltaddr.buf)->sin_port);
- svc->xp_port = ntohs(port);
- return (svc);
- }
- SVCXPRT *
- svctcp_create(fd, sendsize, recvsize)
- int fd;
- u_int sendsize;
- u_int recvsize;
- {
- return svc_com_create(fd, sendsize, recvsize, "tcp");
- }
- SVCXPRT *
- svcudp_bufcreate(fd, sendsz, recvsz)
- int fd;
- u_int sendsz, recvsz;
- {
- return svc_com_create(fd, sendsz, recvsz, "udp");
- }
- SVCXPRT *
- svcfd_create(fd, sendsize, recvsize)
- int fd;
- u_int sendsize;
- u_int recvsize;
- {
- return svc_fd_create(fd, sendsize, recvsize);
- }
- SVCXPRT *
- svcudp_create(fd)
- int fd;
- {
- return svc_com_create(fd, UDPMSGSIZE, UDPMSGSIZE, "udp");
- }
- SVCXPRT *
- svcraw_create()
- {
- return svc_raw_create();
- }
- int
- get_myaddress(addr)
- struct sockaddr_in *addr;
- {
- _DIAGASSERT(addr != NULL);
- memset((void *) addr, 0, sizeof(*addr));
- addr->sin_family = AF_INET;
- addr->sin_port = htons(PMAPPORT);
- addr->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
- return (0);
- }
- /*
- * For connectionless "udp" transport. Obsoleted by rpc_call().
- */
- int
- callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
- char *host;
- int prognum, versnum, procnum;
- xdrproc_t inproc, outproc;
- char *in, *out;
- {
- return (int)rpc_call(host, (rpcprog_t)prognum, (rpcvers_t)versnum,
- (rpcproc_t)procnum, inproc, in, outproc, out, "udp");
- }
- /*
- * For connectionless kind of transport. Obsoleted by rpc_reg()
- */
- int
- registerrpc(prognum, versnum, procnum, progname, inproc, outproc)
- int prognum, versnum, procnum;
- char *(*progname) __P((char [UDPMSGSIZE]));
- xdrproc_t inproc, outproc;
- {
- return rpc_reg((rpcprog_t)prognum, (rpcvers_t)versnum,
- (rpcproc_t)procnum, progname, inproc, outproc, __UNCONST("udp"));
- }
- /*
- * All the following clnt_broadcast stuff is convulated; it supports
- * the earlier calling style of the callback function
- */
- #ifdef _REENTRANT
- static thread_key_t clnt_broadcast_key;
- #endif
- static resultproc_t clnt_broadcast_result_main;
- /*
- * Need to translate the netbuf address into sockaddr_in address.
- * Dont care about netid here.
- */
- /* ARGSUSED */
- static bool_t
- rpc_wrap_bcast(resultp, addr, nconf)
- char *resultp; /* results of the call */
- struct netbuf *addr; /* address of the guy who responded */
- struct netconfig *nconf; /* Netconf of the transport */
- {
- resultproc_t clnt_broadcast_result;
- _DIAGASSERT(resultp != NULL);
- _DIAGASSERT(addr != NULL);
- _DIAGASSERT(nconf != NULL);
- if (strcmp(nconf->nc_netid, "udp"))
- return (FALSE);
- #ifdef _REENTRANT
- if (__isthreaded == 0)
- clnt_broadcast_result = clnt_broadcast_result_main;
- else
- clnt_broadcast_result = thr_getspecific(clnt_broadcast_key);
- #else
- clnt_broadcast_result = clnt_broadcast_result_main;
- #endif
- return (*clnt_broadcast_result)(resultp,
- (struct sockaddr_in *)addr->buf);
- }
- #ifdef _REENTRANT
- static once_t clnt_broadcast_once = ONCE_INITIALIZER;
- static void
- clnt_broadcast_setup(void)
- {
- thr_keycreate(&clnt_broadcast_key, free);
- }
- #endif
- /*
- * Broadcasts on UDP transport. Obsoleted by rpc_broadcast().
- */
- enum clnt_stat
- clnt_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult)
- 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 */
- {
- #ifdef _REENTRANT
- if (__isthreaded == 0)
- clnt_broadcast_result_main = eachresult;
- else {
- thr_once(&clnt_broadcast_once, clnt_broadcast_setup);
- thr_setspecific(clnt_broadcast_key, (void *) eachresult);
- }
- #else
- clnt_broadcast_result_main = eachresult;
- #endif
- return rpc_broadcast((rpcprog_t)prog, (rpcvers_t)vers,
- (rpcproc_t)proc, xargs, argsp, xresults, resultsp,
- (resultproc_t) rpc_wrap_bcast, "udp");
- }
- #endif /* PORTMAP */