174462Salfred/* $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $ */ 274462Salfred 3261057Smav/*- 4261057Smav * Copyright (c) 2009, Sun Microsystems, Inc. 5261057Smav * All rights reserved. 6261057Smav * 7261057Smav * Redistribution and use in source and binary forms, with or without 8261057Smav * modification, are permitted provided that the following conditions are met: 9261057Smav * - Redistributions of source code must retain the above copyright notice, 10261057Smav * this list of conditions and the following disclaimer. 11261057Smav * - Redistributions in binary form must reproduce the above copyright notice, 12261057Smav * this list of conditions and the following disclaimer in the documentation 13261057Smav * and/or other materials provided with the distribution. 14261057Smav * - Neither the name of Sun Microsystems, Inc. nor the names of its 15261057Smav * contributors may be used to endorse or promote products derived 16261057Smav * from this software without specific prior written permission. 1774462Salfred * 18261057Smav * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19261057Smav * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20261057Smav * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21261057Smav * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22261057Smav * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23261057Smav * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24261057Smav * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25261057Smav * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26261057Smav * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27261057Smav * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28261057Smav * POSSIBILITY OF SUCH DAMAGE. 2974462Salfred */ 3074462Salfred 3174462Salfred/* 3274462Salfred * Copyright (c) 1986-1991 by Sun Microsystems Inc. 3374462Salfred */ 3474462Salfred 35136581Sobrien#if defined(LIBC_SCCS) && !defined(lint) 36136581Sobrien#ident "@(#)svc_generic.c 1.19 94/04/24 SMI" 3774462Salfredstatic char sccsid[] = "@(#)svc_generic.c 1.21 89/02/28 Copyr 1988 Sun Micro"; 3874462Salfred#endif 3992990Sobrien#include <sys/cdefs.h> 4092990Sobrien__FBSDID("$FreeBSD$"); 4174462Salfred 4274462Salfred/* 4374462Salfred * svc_generic.c, Server side for RPC. 4474462Salfred * 4574462Salfred */ 4674462Salfred 4775094Siedowse#include "namespace.h" 4874462Salfred#include "reentrant.h" 4974462Salfred#include <sys/types.h> 5074462Salfred#include <sys/socket.h> 5174462Salfred#include <netinet/in.h> 5274462Salfred#include <rpc/rpc.h> 5374462Salfred#include <rpc/nettype.h> 5474462Salfred#include <stdio.h> 5574462Salfred#include <errno.h> 5674462Salfred#include <stdlib.h> 5774462Salfred#include <string.h> 5874462Salfred#include <unistd.h> 5974462Salfred#include <err.h> 6074462Salfred#include "un-namespace.h" 6174462Salfred 6274462Salfred#include "rpc_com.h" 63156090Sdeischen#include "mt_misc.h" 6474462Salfred 6592905Sobrienextern int __svc_vc_setflag(SVCXPRT *, int); 6674462Salfred 6774462Salfred/* 6874462Salfred * The highest level interface for server creation. 6974462Salfred * It tries for all the nettokens in that particular class of token 7074462Salfred * and returns the number of handles it can create and/or find. 7174462Salfred * 7274462Salfred * It creates a link list of all the handles it could create. 7374462Salfred * If svc_create() is called multiple times, it uses the handle 7474462Salfred * created earlier instead of creating a new handle every time. 7574462Salfred */ 7674462Salfredint 7774462Salfredsvc_create(dispatch, prognum, versnum, nettype) 7892905Sobrien void (*dispatch)(struct svc_req *, SVCXPRT *); 7974462Salfred rpcprog_t prognum; /* Program number */ 8074462Salfred rpcvers_t versnum; /* Version number */ 8174462Salfred const char *nettype; /* Networktype token */ 8274462Salfred{ 8374462Salfred struct xlist { 8474462Salfred SVCXPRT *xprt; /* Server handle */ 8574462Salfred struct xlist *next; /* Next item */ 8674462Salfred } *l; 8774462Salfred static struct xlist *xprtlist; /* A link list of all the handles */ 8874462Salfred int num = 0; 8974462Salfred SVCXPRT *xprt; 9074462Salfred struct netconfig *nconf; 9174462Salfred void *handle; 9274462Salfred 9374462Salfred/* VARIABLES PROTECTED BY xprtlist_lock: xprtlist */ 9474462Salfred 9574462Salfred if ((handle = __rpc_setconf(nettype)) == NULL) { 9674462Salfred warnx("svc_create: unknown protocol"); 9774462Salfred return (0); 9874462Salfred } 9974462Salfred while ((nconf = __rpc_getconf(handle)) != NULL) { 10074462Salfred mutex_lock(&xprtlist_lock); 10174462Salfred for (l = xprtlist; l; l = l->next) { 10274462Salfred if (strcmp(l->xprt->xp_netid, nconf->nc_netid) == 0) { 10374462Salfred /* Found an old one, use it */ 10474462Salfred (void) rpcb_unset(prognum, versnum, nconf); 10574462Salfred if (svc_reg(l->xprt, prognum, versnum, 10674462Salfred dispatch, nconf) == FALSE) 10774462Salfred warnx( 10874462Salfred "svc_create: could not register prog %u vers %u on %s", 10974462Salfred (unsigned)prognum, (unsigned)versnum, 11074462Salfred nconf->nc_netid); 11174462Salfred else 11274462Salfred num++; 11374462Salfred break; 11474462Salfred } 11574462Salfred } 11674462Salfred if (l == NULL) { 11774462Salfred /* It was not found. Now create a new one */ 11874462Salfred xprt = svc_tp_create(dispatch, prognum, versnum, nconf); 11974462Salfred if (xprt) { 12074462Salfred l = (struct xlist *)malloc(sizeof (*l)); 12174462Salfred if (l == NULL) { 12274462Salfred warnx("svc_create: no memory"); 12374462Salfred mutex_unlock(&xprtlist_lock); 12474462Salfred return (0); 12574462Salfred } 12674462Salfred l->xprt = xprt; 12774462Salfred l->next = xprtlist; 12874462Salfred xprtlist = l; 12974462Salfred num++; 13074462Salfred } 13174462Salfred } 13274462Salfred mutex_unlock(&xprtlist_lock); 13374462Salfred } 13474462Salfred __rpc_endconf(handle); 13574462Salfred /* 13674462Salfred * In case of num == 0; the error messages are generated by the 13774462Salfred * underlying layers; and hence not needed here. 13874462Salfred */ 13974462Salfred return (num); 14074462Salfred} 14174462Salfred 14274462Salfred/* 14374462Salfred * The high level interface to svc_tli_create(). 14474462Salfred * It tries to create a server for "nconf" and registers the service 14574462Salfred * with the rpcbind. It calls svc_tli_create(); 14674462Salfred */ 14774462SalfredSVCXPRT * 14874462Salfredsvc_tp_create(dispatch, prognum, versnum, nconf) 14992905Sobrien void (*dispatch)(struct svc_req *, SVCXPRT *); 15074462Salfred rpcprog_t prognum; /* Program number */ 15174462Salfred rpcvers_t versnum; /* Version number */ 15274462Salfred const struct netconfig *nconf; /* Netconfig structure for the network */ 15374462Salfred{ 15474462Salfred SVCXPRT *xprt; 15574462Salfred 15674462Salfred if (nconf == NULL) { 15774462Salfred warnx( 15874462Salfred "svc_tp_create: invalid netconfig structure for prog %u vers %u", 15974462Salfred (unsigned)prognum, (unsigned)versnum); 16074462Salfred return (NULL); 16174462Salfred } 16274462Salfred xprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0); 16374462Salfred if (xprt == NULL) { 16474462Salfred return (NULL); 16574462Salfred } 16674462Salfred /*LINTED const castaway*/ 16774462Salfred (void) rpcb_unset(prognum, versnum, (struct netconfig *) nconf); 16874462Salfred if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) { 16974462Salfred warnx( 17074462Salfred "svc_tp_create: Could not register prog %u vers %u on %s", 17174462Salfred (unsigned)prognum, (unsigned)versnum, 17274462Salfred nconf->nc_netid); 17374462Salfred SVC_DESTROY(xprt); 17474462Salfred return (NULL); 17574462Salfred } 17674462Salfred return (xprt); 17774462Salfred} 17874462Salfred 17974462Salfred/* 18074462Salfred * If fd is RPC_ANYFD, then it opens a fd for the given transport 18174462Salfred * provider (nconf cannot be NULL then). If the t_state is T_UNBND and 18274462Salfred * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For 18374462Salfred * NULL bindadr and Connection oriented transports, the value of qlen 18474462Salfred * is set to 8. 18574462Salfred * 18674462Salfred * If sendsz or recvsz are zero, their default values are chosen. 18774462Salfred */ 18874462SalfredSVCXPRT * 18974462Salfredsvc_tli_create(fd, nconf, bindaddr, sendsz, recvsz) 19074462Salfred int fd; /* Connection end point */ 19174462Salfred const struct netconfig *nconf; /* Netconfig struct for nettoken */ 19274462Salfred const struct t_bind *bindaddr; /* Local bind address */ 19374462Salfred u_int sendsz; /* Max sendsize */ 19474462Salfred u_int recvsz; /* Max recvsize */ 19574462Salfred{ 19674462Salfred SVCXPRT *xprt = NULL; /* service handle */ 19774462Salfred bool_t madefd = FALSE; /* whether fd opened here */ 19874462Salfred struct __rpc_sockinfo si; 19974462Salfred struct sockaddr_storage ss; 20074462Salfred socklen_t slen; 20174462Salfred 20274462Salfred if (fd == RPC_ANYFD) { 20374462Salfred if (nconf == NULL) { 20474462Salfred warnx("svc_tli_create: invalid netconfig"); 20574462Salfred return (NULL); 20674462Salfred } 20774462Salfred fd = __rpc_nconf2fd(nconf); 20874462Salfred if (fd == -1) { 20974462Salfred warnx( 21074462Salfred "svc_tli_create: could not open connection for %s", 21174462Salfred nconf->nc_netid); 21274462Salfred return (NULL); 21374462Salfred } 21474462Salfred __rpc_nconf2sockinfo(nconf, &si); 21574462Salfred madefd = TRUE; 21674462Salfred } else { 21774462Salfred /* 21874462Salfred * It is an open descriptor. Get the transport info. 21974462Salfred */ 22074462Salfred if (!__rpc_fd2sockinfo(fd, &si)) { 22174462Salfred warnx( 22274462Salfred "svc_tli_create: could not get transport information"); 22374462Salfred return (NULL); 22474462Salfred } 22574462Salfred } 22674462Salfred 22774462Salfred /* 22874462Salfred * If the fd is unbound, try to bind it. 22974462Salfred */ 23074462Salfred if (madefd || !__rpc_sockisbound(fd)) { 23174462Salfred if (bindaddr == NULL) { 23274462Salfred if (bindresvport(fd, NULL) < 0) { 23374462Salfred memset(&ss, 0, sizeof ss); 23474462Salfred ss.ss_family = si.si_af; 23574462Salfred ss.ss_len = si.si_alen; 23674462Salfred if (_bind(fd, (struct sockaddr *)(void *)&ss, 23774462Salfred (socklen_t)si.si_alen) < 0) { 23874462Salfred warnx( 23974462Salfred "svc_tli_create: could not bind to anonymous port"); 24074462Salfred goto freedata; 24174462Salfred } 24274462Salfred } 24374462Salfred _listen(fd, SOMAXCONN); 24474462Salfred } else { 24574462Salfred if (_bind(fd, 246115133Smbr (struct sockaddr *)bindaddr->addr.buf, 24774462Salfred (socklen_t)si.si_alen) < 0) { 24874462Salfred warnx( 24974462Salfred "svc_tli_create: could not bind to requested address"); 25074462Salfred goto freedata; 25174462Salfred } 25274462Salfred _listen(fd, (int)bindaddr->qlen); 25374462Salfred } 25474462Salfred 25574462Salfred } 25674462Salfred /* 25774462Salfred * call transport specific function. 25874462Salfred */ 25974462Salfred switch (si.si_socktype) { 26074462Salfred case SOCK_STREAM: 26174462Salfred slen = sizeof ss; 26274462Salfred if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) 26374462Salfred == 0) { 26474462Salfred /* accepted socket */ 26574462Salfred xprt = svc_fd_create(fd, sendsz, recvsz); 26674462Salfred } else 26774462Salfred xprt = svc_vc_create(fd, sendsz, recvsz); 26874462Salfred if (!nconf || !xprt) 26974462Salfred break; 27074462Salfred#if 0 27174462Salfred /* XXX fvdl */ 27274462Salfred if (strcmp(nconf->nc_protofmly, "inet") == 0 || 27374462Salfred strcmp(nconf->nc_protofmly, "inet6") == 0) 27474462Salfred (void) __svc_vc_setflag(xprt, TRUE); 27574462Salfred#endif 27674462Salfred break; 27774462Salfred case SOCK_DGRAM: 27874462Salfred xprt = svc_dg_create(fd, sendsz, recvsz); 27974462Salfred break; 28074462Salfred default: 28174462Salfred warnx("svc_tli_create: bad service type"); 28274462Salfred goto freedata; 28374462Salfred } 28474462Salfred 28574462Salfred if (xprt == NULL) 28674462Salfred /* 28774462Salfred * The error messages here are spitted out by the lower layers: 28874462Salfred * svc_vc_create(), svc_fd_create() and svc_dg_create(). 28974462Salfred */ 29074462Salfred goto freedata; 29174462Salfred 29274462Salfred /* Fill in type of service */ 29374462Salfred xprt->xp_type = __rpc_socktype2seman(si.si_socktype); 29474462Salfred 29574462Salfred if (nconf) { 29674462Salfred xprt->xp_netid = strdup(nconf->nc_netid); 29774462Salfred xprt->xp_tp = strdup(nconf->nc_device); 29874462Salfred } 29974462Salfred return (xprt); 30074462Salfred 30174462Salfredfreedata: 30274462Salfred if (madefd) 30374462Salfred (void)_close(fd); 30474462Salfred if (xprt) { 30574462Salfred if (!madefd) /* so that svc_destroy doesnt close fd */ 30674462Salfred xprt->xp_fd = RPC_ANYFD; 30774462Salfred SVC_DESTROY(xprt); 30874462Salfred } 30974462Salfred return (NULL); 31074462Salfred} 311