/* $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos 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 */ /* * Copyright (c) 1986-1991 by Sun Microsystems Inc. */ #if defined(LIBC_SCCS) && !defined(lint) #ident "@(#)svc_generic.c 1.19 94/04/24 SMI" static char sccsid[] = "@(#)svc_generic.c 1.21 89/02/28 Copyr 1988 Sun Micro"; #endif #include __FBSDID("$FreeBSD$"); /* * svc_generic.c, Server side for RPC. * */ #include "opt_inet6.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern int __svc_vc_setflag(SVCXPRT *, int); /* * The highest level interface for server creation. * It tries for all the nettokens in that particular class of token * and returns the number of handles it can create and/or find. * * It creates a link list of all the handles it could create. * If svc_create() is called multiple times, it uses the handle * created earlier instead of creating a new handle every time. */ int svc_create( SVCPOOL *pool, void (*dispatch)(struct svc_req *, SVCXPRT *), rpcprog_t prognum, /* Program number */ rpcvers_t versnum, /* Version number */ const char *nettype) /* Networktype token */ { int num = 0; SVCXPRT *xprt; struct netconfig *nconf; void *handle; if ((handle = __rpc_setconf(nettype)) == NULL) { printf("svc_create: unknown protocol"); return (0); } while ((nconf = __rpc_getconf(handle)) != NULL) { mtx_lock(&pool->sp_lock); TAILQ_FOREACH(xprt, &pool->sp_xlist, xp_link) { if (strcmp(xprt->xp_netid, nconf->nc_netid) == 0) { /* Found an old one, use it */ mtx_unlock(&pool->sp_lock); (void) rpcb_unset(prognum, versnum, nconf); if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) { printf( "svc_create: could not register prog %u vers %u on %s\n", (unsigned)prognum, (unsigned)versnum, nconf->nc_netid); mtx_lock(&pool->sp_lock); } else { num++; mtx_lock(&pool->sp_lock); break; } } } mtx_unlock(&pool->sp_lock); if (xprt == NULL) { /* It was not found. Now create a new one */ xprt = svc_tp_create(pool, dispatch, prognum, versnum, NULL, nconf); if (xprt) { num++; SVC_RELEASE(xprt); } } } __rpc_endconf(handle); /* * In case of num == 0; the error messages are generated by the * underlying layers; and hence not needed here. */ return (num); } /* * The high level interface to svc_tli_create(). * It tries to create a server for "nconf" and registers the service * with the rpcbind. It calls svc_tli_create(); */ SVCXPRT * svc_tp_create( SVCPOOL *pool, void (*dispatch)(struct svc_req *, SVCXPRT *), rpcprog_t prognum, /* Program number */ rpcvers_t versnum, /* Version number */ const char *uaddr, /* Address (or null for default) */ const struct netconfig *nconf) /* Netconfig structure for the network */ { struct netconfig nconfcopy; struct netbuf *taddr; struct t_bind bind; SVCXPRT *xprt; if (nconf == NULL) { printf( "svc_tp_create: invalid netconfig structure for prog %u vers %u\n", (unsigned)prognum, (unsigned)versnum); return (NULL); } if (uaddr) { taddr = uaddr2taddr(nconf, uaddr); bind.addr = *taddr; free(taddr, M_RPC); bind.qlen = SOMAXCONN; xprt = svc_tli_create(pool, NULL, nconf, &bind, 0, 0); free(bind.addr.buf, M_RPC); } else { xprt = svc_tli_create(pool, NULL, nconf, NULL, 0, 0); } if (xprt == NULL) { return (NULL); } /*LINTED const castaway*/ nconfcopy = *nconf; (void) rpcb_unset(prognum, versnum, &nconfcopy); if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) { printf( "svc_tp_create: Could not register prog %u vers %u on %s\n", (unsigned)prognum, (unsigned)versnum, nconf->nc_netid); xprt_unregister(xprt); SVC_RELEASE(xprt); return (NULL); } return (xprt); } /* * If so is NULL, then it opens a socket for the given transport * provider (nconf cannot be NULL then). If the t_state is T_UNBND and * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For * NULL bindadr and Connection oriented transports, the value of qlen * is set to 8. * * If sendsz or recvsz are zero, their default values are chosen. */ SVCXPRT * svc_tli_create( SVCPOOL *pool, struct socket *so, /* Connection end point */ const struct netconfig *nconf, /* Netconfig struct for nettoken */ const struct t_bind *bindaddr, /* Local bind address */ size_t sendsz, /* Max sendsize */ size_t recvsz) /* Max recvsize */ { SVCXPRT *xprt = NULL; /* service handle */ bool_t madeso = FALSE; /* whether so opened here */ struct __rpc_sockinfo si; struct sockaddr_storage ss; if (!so) { if (nconf == NULL) { printf("svc_tli_create: invalid netconfig\n"); return (NULL); } so = __rpc_nconf2socket(nconf); if (!so) { printf( "svc_tli_create: could not open connection for %s\n", nconf->nc_netid); return (NULL); } __rpc_nconf2sockinfo(nconf, &si); madeso = TRUE; } else { /* * It is an open socket. Get the transport info. */ CURVNET_SET(so->so_vnet); if (!__rpc_socket2sockinfo(so, &si)) { printf( "svc_tli_create: could not get transport information\n"); CURVNET_RESTORE(); return (NULL); } CURVNET_RESTORE(); } /* * If the socket is unbound, try to bind it. */ if (madeso || !__rpc_sockisbound(so)) { if (bindaddr == NULL) { if (bindresvport(so, NULL)) { memset(&ss, 0, sizeof ss); ss.ss_family = si.si_af; ss.ss_len = si.si_alen; if (sobind(so, (struct sockaddr *)&ss, curthread)) { printf( "svc_tli_create: could not bind to anonymous port\n"); goto freedata; } } solisten(so, SOMAXCONN, curthread); } else { if (bindresvport(so, (struct sockaddr *)bindaddr->addr.buf)) { printf( "svc_tli_create: could not bind to requested address\n"); goto freedata; } CURVNET_SET(so->so_vnet); solisten(so, (int)bindaddr->qlen, curthread); CURVNET_RESTORE(); } } /* * call transport specific function. */ switch (si.si_socktype) { case SOCK_STREAM: #if 0 slen = sizeof ss; if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) == 0) { /* accepted socket */ xprt = svc_fd_create(fd, sendsz, recvsz); } else #endif xprt = svc_vc_create(pool, so, sendsz, recvsz); if (!nconf || !xprt) break; #if 0 /* XXX fvdl */ if (strcmp(nconf->nc_protofmly, "inet") == 0 || strcmp(nconf->nc_protofmly, "inet6") == 0) (void) __svc_vc_setflag(xprt, TRUE); #endif break; case SOCK_DGRAM: xprt = svc_dg_create(pool, so, sendsz, recvsz); break; default: printf("svc_tli_create: bad service type"); goto freedata; } if (xprt == NULL) /* * The error messages here are spitted out by the lower layers: * svc_vc_create(), svc_fd_create() and svc_dg_create(). */ goto freedata; /* Fill in type of service */ xprt->xp_type = __rpc_socktype2seman(si.si_socktype); if (nconf) { xprt->xp_netid = strdup(nconf->nc_netid, M_RPC); } return (xprt); freedata: if (madeso) (void)soclose(so); if (xprt) { if (!madeso) /* so that svc_destroy doesnt close fd */ xprt->xp_socket = NULL; xprt_unregister(xprt); } return (NULL); }