/* $NetBSD: rpc_soc.c,v 1.6 2000/07/06 03:10:35 christos Exp $ */ /*- * Copyright (c) 2009, Sun Microsystems, Inc. * All rights reserved. * * 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 Sun Microsystems, 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. */ /* #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. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)rpc_soc.c 1.41 89/05/02 Copyr 1988 Sun Micro"; #endif #include __FBSDID("$FreeBSD$"); #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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "un-namespace.h" #include "rpc_com.h" #include "mt_misc.h" static CLIENT *clnt_com_create(struct sockaddr_in *, rpcprog_t, rpcvers_t, int *, u_int, u_int, char *); static SVCXPRT *svc_com_create(int, u_int, u_int, char *); static bool_t rpc_wrap_bcast(char *, struct netbuf *, struct netconfig *); /* XXX */ #define IN4_LOCALHOST_STRING "127.0.0.1" #define IN6_LOCALHOST_STRING "::1" /* * A common clnt create routine */ static CLIENT * clnt_com_create(struct sockaddr_in *raddr, rpcprog_t prog, rpcvers_t vers, int *sockp, u_int sendsz, u_int recvsz, char *tp) { CLIENT *cl; int madefd = FALSE; int fd = *sockp; struct netconfig *nconf; struct netbuf bindaddr; 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(struct sockaddr_in *raddr, u_long prog, u_long vers, struct timeval wait, int *sockp, u_int sendsz, u_int recvsz) { CLIENT *cl; 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, &wait); return (cl); } 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); } CLIENT * clnttcp_create(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(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(int fd, u_int sendsize, u_int recvsize, char *netid) { struct netconfig *nconf; SVCXPRT *svc; int madefd = FALSE; int port; struct sockaddr_in sin; 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(&sin, 0, sizeof sin); sin.sin_family = AF_INET; bindresvport(fd, &sin); _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(int fd, u_int sendsize, u_int recvsize) { return svc_com_create(fd, sendsize, recvsize, "tcp"); } SVCXPRT * svcudp_bufcreate(int fd, u_int sendsz, u_int recvsz) { return svc_com_create(fd, sendsz, recvsz, "udp"); } SVCXPRT * svcfd_create(int fd, u_int sendsize, u_int recvsize) { return svc_fd_create(fd, sendsize, recvsize); } SVCXPRT * svcudp_create(int fd) { return svc_com_create(fd, UDPMSGSIZE, UDPMSGSIZE, "udp"); } SVCXPRT * svcraw_create() { return svc_raw_create(); } int get_myaddress(struct sockaddr_in *addr) { 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(const char *host, int prognum, int versnum, int procnum, xdrproc_t inproc, void *in, xdrproc_t outproc, void *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(int prognum, int versnum, int procnum, char *(*progname)(char [UDPMSGSIZE]), xdrproc_t inproc, xdrproc_t outproc) { return rpc_reg((rpcprog_t)prognum, (rpcvers_t)versnum, (rpcproc_t)procnum, progname, inproc, outproc, "udp"); } /* * All the following clnt_broadcast stuff is convulated; it supports * the earlier calling style of the callback function */ static thread_key_t clnt_broadcast_key; static resultproc_t clnt_broadcast_result_main; static once_t clnt_broadcast_once = ONCE_INITIALIZER; static void clnt_broadcast_key_init(void) { thr_keycreate(&clnt_broadcast_key, free); } /* * Need to translate the netbuf address into sockaddr_in address. * Dont care about netid here. */ /* ARGSUSED */ static bool_t rpc_wrap_bcast(char *resultp, struct netbuf *addr, struct netconfig *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; if (strcmp(nconf->nc_netid, "udp")) return (FALSE); if (thr_main()) clnt_broadcast_result = clnt_broadcast_result_main; else clnt_broadcast_result = (resultproc_t)thr_getspecific(clnt_broadcast_key); return (*clnt_broadcast_result)(resultp, (struct sockaddr_in *)addr->buf); } /* * Broadcasts on UDP transport. Obsoleted by rpc_broadcast(). */ enum clnt_stat clnt_broadcast(u_long prog, u_long vers, u_long proc, xdrproc_t xargs, void *argsp, xdrproc_t xresults, void *resultsp, resultproc_t eachresult) /* * u_long prog; // program number * u_long vers; // version number * u_long proc; // procedure number * xdrproc_t xargs; // xdr routine for args * void *argsp; // pointer to args * xdrproc_t xresults; // xdr routine for results * void *resultsp; // pointer to results * resultproc_t eachresult; // call with each result obtained */ { if (thr_main()) clnt_broadcast_result_main = eachresult; else { thr_once(&clnt_broadcast_once, clnt_broadcast_key_init); thr_setspecific(clnt_broadcast_key, (void *) eachresult); } return rpc_broadcast((rpcprog_t)prog, (rpcvers_t)vers, (rpcproc_t)proc, xargs, argsp, xresults, resultsp, (resultproc_t) rpc_wrap_bcast, "udp"); } /* * Create the client des authentication object. Obsoleted by * authdes_seccreate(). */ AUTH * authdes_create(char *servername, u_int window, struct sockaddr *syncaddr, des_block *ckey) /* * char *servername; // network name of server * u_int window; // time to live * struct sockaddr *syncaddr; // optional hostaddr to sync with * des_block *ckey; // optional conversation key to use */ { AUTH *dummy; AUTH *nauth; char hostname[NI_MAXHOST]; if (syncaddr) { /* * Change addr to hostname, because that is the way * new interface takes it. */ if (getnameinfo(syncaddr, syncaddr->sa_len, hostname, sizeof hostname, NULL, 0, 0) != 0) goto fallback; nauth = authdes_seccreate(servername, window, hostname, ckey); return (nauth); } fallback: dummy = authdes_seccreate(servername, window, NULL, ckey); return (dummy); } /* * Create a client handle for a unix connection. Obsoleted by clnt_vc_create() */ CLIENT * clntunix_create(struct sockaddr_un *raddr, u_long prog, u_long vers, int *sockp, u_int sendsz, u_int recvsz) { struct netbuf *svcaddr; CLIENT *cl; int len; cl = NULL; svcaddr = NULL; if ((raddr->sun_len == 0) || ((svcaddr = malloc(sizeof(struct netbuf))) == NULL ) || ((svcaddr->buf = malloc(sizeof(struct sockaddr_un))) == NULL)) { if (svcaddr != NULL) free(svcaddr); rpc_createerr.cf_stat = RPC_SYSTEMERROR; rpc_createerr.cf_error.re_errno = errno; return(cl); } if (*sockp < 0) { *sockp = _socket(AF_LOCAL, SOCK_STREAM, 0); len = raddr->sun_len = SUN_LEN(raddr); if ((*sockp < 0) || (_connect(*sockp, (struct sockaddr *)raddr, len) < 0)) { rpc_createerr.cf_stat = RPC_SYSTEMERROR; rpc_createerr.cf_error.re_errno = errno; if (*sockp != -1) (void)_close(*sockp); goto done; } } svcaddr->buf = raddr; svcaddr->len = raddr->sun_len; svcaddr->maxlen = sizeof (struct sockaddr_un); cl = clnt_vc_create(*sockp, svcaddr, prog, vers, sendsz, recvsz); done: free(svcaddr->buf); free(svcaddr); return(cl); } /* * Creates, registers, and returns a (rpc) unix based transporter. * Obsoleted by svc_vc_create(). */ SVCXPRT * svcunix_create(int sock, u_int sendsize, u_int recvsize, char *path) { struct netconfig *nconf; void *localhandle; struct sockaddr_un sun; struct sockaddr *sa; struct t_bind taddr; SVCXPRT *xprt; int addrlen; xprt = (SVCXPRT *)NULL; localhandle = setnetconfig(); while ((nconf = getnetconfig(localhandle)) != NULL) { if (nconf->nc_protofmly != NULL && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) break; } if (nconf == NULL) return(xprt); if ((sock = __rpc_nconf2fd(nconf)) < 0) goto done; memset(&sun, 0, sizeof sun); sun.sun_family = AF_LOCAL; if (strlcpy(sun.sun_path, path, sizeof(sun.sun_path)) >= sizeof(sun.sun_path)) goto done; sun.sun_len = SUN_LEN(&sun); addrlen = sizeof (struct sockaddr_un); sa = (struct sockaddr *)&sun; if (_bind(sock, sa, addrlen) < 0) goto done; taddr.addr.len = taddr.addr.maxlen = addrlen; taddr.addr.buf = malloc(addrlen); if (taddr.addr.buf == NULL) goto done; memcpy(taddr.addr.buf, sa, addrlen); if (nconf->nc_semantics != NC_TPI_CLTS) { if (_listen(sock, SOMAXCONN) < 0) { free(taddr.addr.buf); goto done; } } xprt = (SVCXPRT *)svc_tli_create(sock, nconf, &taddr, sendsize, recvsize); done: endnetconfig(localhandle); return(xprt); } /* * Like svunix_create(), except the routine takes any *open* UNIX file * descriptor as its first input. Obsoleted by svc_fd_create(); */ SVCXPRT * svcunixfd_create(int fd, u_int sendsize, u_int recvsize) { return (svc_fd_create(fd, sendsize, recvsize)); } #endif /* PORTMAP */